Дисертації: "Communicative continuum"

1

Hong, Jing. "Analyse linguistique d'un genre de discours : l'entretien - écrit ou oral - à dominante culturelle." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0263.

Повний текст джерела

Анотація:

Notre travail porte sur un ensemble d'entretiens, écrits ou oraux, à dominante culturelle. Nous identifions le genre de l'« entretien culturel ». Ce genre de discours s'apparente au dialogue et relève de diverses sphères d'activités culturelles (pratiques artistiques principalement) et s'inscrit dans des institutions identifiées de production ou de diffusion des savoirs. Les domaines culturels que nous avons privilégiés sont la littérature (F. Ponge, N. Sarraute, A. Nothomb, É. Reinhardt) et le cinéma (A. Varda, J. Rouch, B. Tavernier, M. Piccoli). Les entretiens oraux proviennent d'enregistrements de la chaîne radiophonique France-Culture. Les entretiens écrits sont des publications livresques ou sont extraits de médias de presse (Télérama ou Le Monde).Dans une première partie, nous nous efforçons de caractériser le genre de l'entretien culturel en le rapportant à sa superstructure dialogale et en le différenciant d'une conversation ordinaire. Nous avons tout d'abord fait le constat de l'omniprésence médiatique de l'entretien dans les médias, ce que nous avons attesté par diverses données chiffrées. Ensuite, nous avons traité la question de la synonymie d'entretien, conversation et dialogue à travers des usages de presse (Le Monde). Enfin, vient notre cadrage théorique qui est surtout constitué par l'analyse du discours (D. Maingueneau, 1999, 2002, 2014), le dialogisme (J. Bres, 2005), les analyses conversationnelles (E. Roulet et al., 19872) et interactionnistes (C. Kerbrat-Orecchioni, 1990), et la linguistique textuelle (J.-M. Adam, [1992] 20174). L'ensemble de ces apports théoriques se fonde sur la différence entre les genres premiers et les genres seconds opérée par M. Bakhtine (1984). À l'issue de la première partie, nous définissons le genre de l'entretien culturel, c'est-à-dire que nous spécifions les composantes de sa macro-structure.Ensuite, dans une deuxième grande partie, nous procédons à des analyses linguistiques d'extraits pour lesquelles nous nous sommes dotée d'outils linguistiques susceptibles de rendre compte du niveau de structuration intermédiaire. Le flux verbal et le dynamisme informationnel nécessitent en effet que l'on sache appréhender la question énonciative ou la macro-syntaxe avec des outils d'analyse adaptés : la grammaire de la période (Groupe de Fribourg, 2012) ; la grammaire de texte et les stratégies de topicalisation (B. Combettes, 1986). De même, la micro-syntaxe dans ses réalisations orales nécessitent des outils appropriés comme la grille syntaxique de C. Blanche-Benveniste (1990).Dans notre dernière partie, nous cherchons plus spécialement à caractériser les échanges entre une forme orale et une forme écrite, la réalisation d'effets de mixité n'étant pas nécessairement liés au support lui-même. La thèse se propose de revenir sur le continuum communicationnel de Koch & Oesterreicher (2001) pour en éprouver les paramètres (« les déterminants situationnels et contextuels »). Il nous a semblé que le continuum communicationnel est une solution pour résoudre la question générale de la dichotomie oral et/ou écrit. Nous essayerons de montrer comment ce continuum opère dans le cas des entretiens culturels
Our work concerns a set of interviews, written or oral, with a cultural focus. We identified the genre of the “cultural interview”. This genre of discourse is similar to the dialogue and it concerns various spheres of cultural activities (mainly artistic practices) that are inscribed in identified institutions of production or publication. The cultural domains that we have selected are literature (F. Ponge, N. Sarraute, A. Nothomb, É. Reinhardt) and cinema (A. Varda, J. Rouch, B. Tavernier, M. Piccoli). The oral interviews are mainly from recordings of the radio station « France-Culture » whereas, the written interviews were selected from books or press media such as, Télérama or Le Monde.Firstly, we characterize the genre of the cultural interview by relating it to its dialogical superstructure and differentiating it from an ordinary conversation. We noted the media omnipresence of the interview which we have attested by various figures. Then, we deal with the synonymous questions of an interview, conversation and dialogue through press usage (Le Monde). Finally, our theoretical framework is mainly constituted by discourse analysis (D. Maingueneau, 1999, 2002, 2014), dialogism (J. Bres, 2005), conversational analysis (E. Roulet et al., 19872), interactionist analysis (C. Kerbrat-Orecchioni, 1990) and textual linguistics (J.-M. Adam, [1992] 20174). All these theoretical contributions are based on the difference between primary and secondary genres made by M. Bakhtine (1984). At the end of the first part, we define the genre of the cultural conversation by specifying the components of its macro-structure.We then proceed to linguistic analyses of excerpts for which we have equipped ourselves with linguistic tools likely to account for the intermediate level of structuring. The verbal flow and the informational dynamism require indeed that we know how to apprehend the enunciative question or the macro-syntax with adapted analysis tools: the grammar of the period (Groupe de Fribourg, 2012); the grammar of text and the strategies of topicalization (B. Combettes, 1986). Similarly, micro-syntax in its oral realizations, requires appropriate tools such as the syntactic grid of C. Blanche-Benveniste (1990).Lastly, we specifically characterize the exchanges between an oral form and a written form. The realization of mixing effects may not be necessarily linked to the medium itself. The thesis proposes to return to Koch & Oesterreicher's communicational continuum (2001) in order to test its parameters (situational and contextual determinants). We observed that the communicative continuum is a solution to the general question of the oral and/or written dichotomy. Here we show how this continuum operates in the case of cultural interviews

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Marks, Lori J., and M. L. McMurray. "Augmentative and Alternative Communication: A Continuum of Devices." Digital Commons @ East Tennessee State University, 2003. https://dc.etsu.edu/etsu-works/3551.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Loock, Peter van. "Quantum communication with continuous variables." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368766.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Grosshans, Frédéric. "Communication et cryptographie quantiques avec des variables continues." Phd thesis, Université Paris Sud - Paris XI, 2002. http://tel.archives-ouvertes.fr/tel-00002343.

Повний текст джерела

Анотація:

Ces dernières années, les variables continues ont émergées en tant qu alternative aux variables discrètes dans les communications quantiques. Cette thèse s'inscrit dans ce cadre des communications quantiques avec des variables continues. Les variables continues utilisées ici sont les quadratures d'un mode du champ électromagnétique. Pour les mesurer, nous avons construit une détection homodyne équilibrée, limitée au bruit de photons, impulsionnelle et résolue en temps. Celle-ci peut effectuer 800 000 mesures par seconde. En se fondant sur la limite de la duplication quantique, nous montrons qu'une valeur de la fidélité supérieure à 2/3 dans un protocole de téléportation quantique garantit que l'état téléporté est la meilleure copie qui reste de l'état d'entrée. Nous introduisons de nouveaux protocoles de distribution quantique de clef utilisant des variables quantiques continues, sûrs face à des attaques individuelles pour toute valeur de la transmission de la ligne optique entre Alice et Bob. En particulier, il n'est pas nécessaire que cette transmission soit plus grande que 50 % (moins de 3 dB de pertes). Ni compression des fluctuations quantiques, ni intrication ne sont nécessaires. Nous avons implémenté expérimentalement ces protocoles, en utilisant la détection homodyne limitée au bruit de photon mentionnée plus haut et des états cohérents. L'extraction complète de la clef secrète est réalisée en utilisant une technique de réconciliation par tranches inversée suivie d amplification de confidentialité. Notre dispositif expérimental produit un taux net de transmission de clef de 1,7 megabits par seconde pour une ligne sans pertes, et 75 kilobits par seconde pour une ligne avec 3,1 dB de pertes. Les limitations actuelles sont essentiellement techniques et proviennent surtout de l'efficacité limitée du logiciel de réconciliation.

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Harrold, William. "Detection of continuous phase modulation." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235856.

Повний текст джерела

Анотація:

The use of coded modulations such as continuous phase modulation (CPM) can improve the power and bandwidth efficiency of digital communication links. The price paid for these gains is in increased receiver complexity. The power efficiency attainable with the highly redundant signal sets employed by coded modulations becomes limited by the ability of the receiver to achieve accurate carrier phase synchronisation. Power efficiency is assessed in terms of the bit error rate performance in white Gaussian noise. A new CPM detector called the partially coherent Viterbi algorithm (PCVA) is introduced which tries to preserve the power efficiency in the presence of mild phase perturbations. The detector employs the Viterbi algorithm with a new partially coherent decision metric. Carrier phase estimates are derived dynamically from the detector's own survivor paths. In the presence of phase jitter, the PCVA is superior to a Viterbi decision directed phase locked loop. The PCVA could be applied to the detection of modulation schemes other than CPM. An error analysis of the PCVA in the absence of phase jitter provides a new and more realistic way of assessing the relative merits of various CPM schemes. Unmerged error events have been found to occur when CPM is detected with carrier phase uncertainty. The carrier phase estimator pulls in the residual phase error in such cases. A reduced state Viterbi algorithm has been examined when using the partially coherent decision metric. Receiver complexity reduction is still possible even when the detector is not coherent. A method of acquiring the carrier frequency accurately from the received CPM signal is described. The other main research goal has been the development of a new low signal-to-noise ratio (SNR) error probability analysis for coherently detected CPM. CPM is designed for use on power limited channels, but the existing error probability analysis is only accurate at high SNR. The problem at low SNR is that several error events become significant, not just the one at minimum squared Euclidean distance. The new analysis considers many events and makes statistical allowance for their pairwise interaction. The probability of events intersecting and reclosing each other has not been analysed before. This work applies to maximum likelihood sequence detection on a memoryless channel in general. A new survey of CPM error performance is made and proves the existing minimum distance results to be often optimistic especially at low and intermediate signal-to-noise ratios. The new approximation is closer to the simulated error rates where these are available. The coherent error analysis involves some computation but it is still approximately three orders of magnitude faster than simulation.

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Iblisdir, Sofyan. "Communication avec des variables quatiques continues :clonage et cryptographie." Doctoral thesis, Universite Libre de Bruxelles, 2003. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211312.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Larsson, Carina. "Communicating performance measures: Supporting continuous improvement in manufacturing companies." Licentiate thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-13812.

Повний текст джерела

Анотація:

Manufacturing enterprises are a key driver of economic growth (Eurostat, 2016). Implementing continuous improvement (CI) is commonly used to increase competitiveness (Hyland et al., 2007), but despite the well-known theory of CI, many manufacturing companies fail in implementing it (Bhasin, 2012; Nordin et al., 2012; Tiwari et al., 2007). An identified critical success factor in CI implementation is the evaluation of performance, including the performance evaluation system itself, the linkage between targets at different company levels, and continual evaluation of performance (Bakås et al., 2011; Scherrer-Rathje et al., 2009; Ukko et al., 2009). Another critical success factor in CI implementation is the communication of performance measures (Bakås et al., 2011; Ukko et al., 2009). This research explores the communication of performance measures. The aim is to support CI by improving the communication of performance measures, and to this end, this thesis concentrates on identifying the main challenges in the communication of performance measures supporting CI. The research scope is manufacturing companies in general, and manufacturing SMEs in particular. The relevant literature concerning the communication of performance measures in manufacturing companies is identified and summarized. Also, current practice is explored, focusing on how performance measures are communicated in manufacturing companies, and whether and how the communication supports CI. This has been done to identify divergences between current practice and theory. Finally, theory and empirical findings are synthesized to identify some of the main challenges to be addressed in order to succeed in CI. The main task is to support CI efforts in manufacturing SMEs, eliminating the identified divergences in the communication of performance measures by adapting these measures to these manufacturing SMEs. These challenges can be summarized as follows:  - using both financial performance measures as well as objective and subjective, non-financial performance measures  - aligning performance measures with strategy and targets  - integrating all performance measure communication, as related to both daily performance and CI, in the same communication loop.  - forming two-way communication channels between managers and operators  - aligning oral and written communication channels  - exploring how information systems can facilitate the communication of performance measures  - using and optimizing the visual communication of performance measures

I avhandlingen ingår även följande publikationer:

Larsson, C., Strand, M., Persson, A., & Syberfeldt, A., 2017. Communicating continuous improvement in manufacturing SMEs: Divergences between current practice and theory. Published at PMAA 2017 Conference “New Approaches, Changed Understandings”. Dunedin, New Zeeland, 2017.

Larsson, C., 2017. How to visualize performance measures in a manufacturing SME. Accepted for publication in Measuring Business Excellence.

Larsson, C., & Syberfeldt, A., 2016. Communicating performance measures - current practice in manufacturing SMEs. Submitted to International Journal of Productivity and Performance Management.

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Wenger, Jérôme. "Dispositifs impulsionnels pour la communication quantique à variables continues." Phd thesis, Université Paris Sud - Paris XI, 2004. http://tel.archives-ouvertes.fr/tel-00006926.

Повний текст джерела

Анотація:

L'objectif central de cette thèse est d'exploiter les propriétés quantiques du champ électromagnétique pour développer de nouveaux dispositifs de communication. L'étude porte sur les composantes de quadrature (variables quantiques continues) d'un mode impulsionnel du champ lumineux. Une démonstration expérimentale de cryptographie quantique avec des états cohérents a été réalisée. Le dispositif se base sur des impulsions modulées en amplitude et en phase et comportant en moyenne une centaine de photons. Pour chaque impulsion lumineuse, une détection homodyne résolue en temps permet de mesurer une composante de quadrature particulière avec une forte efficacité. Une clé secrète a ainsi été transmise à un débit de 1.7 Mbits/s en l'absence de pertes et 75 kbits/s pour une transmission présentant des pertes de 3.1 dB, ce qui ouvre la voie pour des applications de cryptographie quantique à hauts débits. Afin d'étudier l'utilisation de spécificités quantiques, nous avons développé une source impulsionnelle d'états comprimés et d'états intriqués. Cette source utilise des conversions non-linéaires d'impulsions ultrabrèves intervenant dans un cristal mince de niobate de potassium. Suivant la configuration, la réduction du bruit en quadrature est de 2.7 dB sous le niveau de bruit quantique standard, ou les corrélations entre les quadratures des faisceaux intriqués sont de 2.5 dB. Grâce à ce dispositif, nous avons mis en oeuvre la première expérience de "dégaussification", pour transformer des impulsions de vide comprimé en des états non-gaussiens. Ce protocole est directement lié à la distillation de l'intrication de variables continues, qui permet d'améliorer la portée des dispositifs de cryptographie. Enfin, des schémas sont étudiés pour réaliser des tests complets des inégalités de Bell avec des variables continues mesurées par des détections homodynes.

Стилі APA, Harvard, Vancouver, ISO та ін.

9

AGUIARI, DAVIDE. "Exploring Computing Continuum in IoT Systems: Sensing, Communicating and Processing at the Network Edge." Doctoral thesis, Università degli Studi di Cagliari, 2021. http://hdl.handle.net/11584/311478.

Повний текст джерела

Анотація:

As Internet of Things (IoT), originally comprising of only a few simple sensing devices, reaches 34 billion units by the end of 2020, they cannot be defined as merely monitoring sensors anymore. IoT capabilities have been improved in recent years as relatively large internal computation and storage capacity are becoming a commodity. In the early days of IoT, processing and storage were typically performed in cloud. New IoT architectures are able to perform complex tasks directly on-device, thus enabling the concept of an extended computational continuum. Real-time critical scenarios e.g. autonomous vehicles sensing, area surveying or disaster rescue and recovery require all the actors involved to be coordinated and collaborate without human interaction to a common goal, sharing data and resources, even in intermittent networks covered areas. This poses new problems in distributed systems, resource management, device orchestration,as well as data processing. This work proposes a new orchestration and communication framework, namely CContinuum, designed to manage resources in heterogeneous IoT architectures across multiple application scenarios. This work focuses on two key sustainability macroscenarios: (a) environmental sensing and awareness, and (b) electric mobility support. In the first case a mechanism to measure air quality over a long period of time for different applications at global scale (3 continents 4 countries) is introduced. The system has been developed in-house from the sensor design to the mist-computing operations performed by the nodes. In the second scenario, a technique to transmit large amounts of fine-time granularity battery data from a moving vehicle to a control center is proposed jointly with the ability of allocating tasks on demand within the computing continuum.

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Herrmann, Andrew F. "The Beatings Will Continue Until Morale Improves." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etsu-works/746.

Повний текст джерела

Анотація:

Political decisions about higher education and organizational decision-making within higher educational institutions reflect the acceptance of academic capitalist discourse, placing financial burdens on students, stress upon faculty, and the obliteration of trust between faculty and administration. In this critical layered narrative account, a tenure-track faculty member examines the impacts and influences of academic capitalism, including how this neoliberal discourse disregards the idea of higher education as a public good, creates an atmosphere of fear among faculty, and affects faculty-student relationships. This account illustrates how academic capitalism, with its emphasis on money and power, influenced decisions regarding a partnership with a software company, and of course, a rebooted football program.

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Sreenan, Cormac John. "Synchronisation services for digital continuous media." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260690.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Levita, C. J. A. "Investigation of coded and uncoded CPM based wireless communication systems." Thesis, University of Huddersfield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323809.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Lind, Adam. "Chat Language : In the continuum of speech and writing." Thesis, Linnéuniversitetet, Institutionen för språk och litteratur, SOL, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-21444.

Повний текст джерела

Анотація:

The aim of this essay is to determine where on a continuum between speech and writingwritten computer-mediated communication (chat language) would be placed. The essay makes use of a methodology based on Biber (1988). This was done using a quantitative research methodology based on counting and comparing specific linguistic features in different texts. The data for chat language came from the NPS Chat Corpus. Other data used were transcripts of spoken discourse as well as a popular scientific text as material for comparison. This essay is mainly focused on four features: the use of pronouns, passives, ellipsis and the type/token ration of each individual text. Despite the limited size of the material sampled, the results showed that chat language had more in common overall with speech than with writing.

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Rodó, Sarró Carles. "Quantum Information with Continuous Variable systems." Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/3426.

Повний текст джерела

Анотація:

Aquesta tesi tracta l'estudi de protocols de comunicació quàntica amb sistemes devariable continua (CV). Els sistemes de CV són aquells descrits per coordenades canòniques conjugades $x$ i $p$ dotades amb un espai de Hilbert de dimensió inﬁnita. Una classe especial de sistemes CV són, els anomenats estats Gaussians.Contràriament als sistemes discrets, els estats Gaussians entrellaçats no es podendestil·lar només amb operacions Gaussianes. No obstant va ser mostrat que, és possible extreure bits clàssics perfectament correlacionats per establir claus secretes aleatòries. Apropiadament modiﬁquem el protocol usant entrellaçament Gaussià bipartit per assolir la distribució de claus quàntiques de manera eﬁcient i realista. Descrivim i demostrem la seguretat en front de diversos possibles atacs enla comunicació, detallant els recursos necessaris. També hem considerat un protocol tripartit simple conegut com Acord Bizantí. És un vell protocol de comunicació clàssica en el què els participants (amb possibles traïdors entre ells)només podem comunicar-se en parelles, mentre intenten arribar a una decisiócomú. Clàssicament hi ha un límit en el nombre màxim de traïdors que poden estar involucrats dins el joc. No obstant, una solució quàntica existeix. Mostrem aquestasolució dins els CV usant estats entrellaçats Gaussians multipartits i operacionsGaussianes. A més, mostrem sota quines premisses, entrellaçament contingut als estats, soroll, detectors ineﬁcients, el nostre protocol és eﬁcient i aplicable amb tecnologia actual.
És conegut que tot i que el seu rol excepcional dins els estats CV, de fet, els estats Gaussians no són sempre els millors candidats per desenvolupar tasquesd'informació quàntica. Així, ataquem el problema de la quantiﬁcació de correlacions(clàssiques i/o quàntiques) entre dos modes CV (Gaussians i no Gaussians).Proposem deﬁnir les correlacions entre dos modes com el màxim numero de bits correlacionats extrets a través de mesures locals en les quadratures de cadamode. En els estats Gaussians, on l'entrellaçament és accessible a través de la seva matriu de covariança la nostra quantiﬁcació majoritza l'entrellaçament, reduint¬se a un monotó d'entrellaçament per estats purs. Per estats no Gaussians, com estats fotònics de Bell, estats foto-substrets i mescles d'estats Gaussians, la correlació de bits en quadratures mostra ser també una funció monòtona amb la negativitat. Aquesta quantiﬁcació dóna una operacional i factible manera de mesurar l'entrellaçament no Gaussià en experiments actuals mitjançant detecció homodine directa i sense necessitar una tomograﬁa completa de l'estat amb lamateixa diﬁcultat que si es tractes d'estats Gaussians.
Finalment ens hem focalitzat amb col·lectivitats atòmiques descrites com CV. L'entrellaçament induït per la mesura entre dos col·lectivitats atòmiques macroscòpiques va ser reportat experimentalment al 2001. Allà, la interacció entreun únic pols làser apropant-se a través de dos col·lectivitats atòmiques separades espacialment combinat amb una mesura projectiva ﬁnal en la llum permetia la creació d'entrellaçament EPR pur entre les dues col·lectivitats. Mostrem com generar, manipular i detectar entrellaçament mesoscopic entre un nombre arbitraride col·lectivitats a través d'una interfície llum-matèria quàntica no demolidora. Lanostra proposta s'extén d'una manera no trivial per entrellaçament multipartit (GHZ ide tipus clúster) sense la necessitat de camps magnètics locals. A més mostrem sorprenentment que, donat el caràcter irreversible de la mesura, la interacció de la col·lectivitat atòmica amb un segon feix de llum pot modiﬁcar e inclús revertir la acció d'entrellaçament del primer deixant la col·lectivitat en un estat separable.
This thesis deals with the study of quantum communication protocols with Continuous Variable (CV) systems. CV systems are those described by canonical conjugated coordinates $x$ and $p$ endowed with inﬁnite dimensional Hilbertspaces, thus involving a complex mathematical structure. A special class of CVstates, are the so-called Gaussian states. We present a protocol that permits toextract quantum keys from entangled Gaussian states. Differently from discretesystems, Gaussian entangled states cannot be distilled with Gaussian operations only. However it was already shown, that it is still possible to extract perfectly correlated classical bits to establish secret random keys. We properly modify theprotocol using bipartite Gaussian entanglement to perform quantum key distribution in an efﬁcient and realistic way. We describe and demonstrate security in front of different possible attacks on the communication, detailing the resources demanded. We also consider a simple 3-partite protocol known as Byzantine Agreement. It is anold classical communication problem in which parties (with possible traitors amongthem) can only communicate pairwise, while trying to reach a common decision. Classically, there is a bound in the maximal number of possible traitors that can be involved in the game. Nevertheless, a quantum solution exist. We show that solution within CV using multipartite entangled Gaussian states and Gaussian operations. Furthermore, we show under which premises concerning entanglement content of the state, noise, inefﬁcient homodyne detectors, our protocol is efﬁcient and applicable with present technology.
It is known that in spite of their exceptional role within the space of all CV states, in fact, Gaussian states are not always the best candidates to perform quantum information tasks. Thus, we tackle the problem of quantiﬁcation of correlations (quantum and/or classical) between two CV modes (Gaussian and non-Gaussian). We propose to deﬁne correlations between the two modes as the maximal number of correlated bits extracted via local quadrature measurements on each mode. On Gaussian states, where entanglement is accessible via their covariance matrix ourquantiﬁcation majorizes entanglement, reducing to an entanglement monotone for pure states. For non-Gaussian states, such as photonic Bell states, photon subtracted states and mixtures of Gaussian states, the bit quadrature correlationsare shown to be also a monotonic function of the negativity. This quantiﬁcation yields a feasible, operational way to measure non-Gaussian entanglement in currentexperiments by means of direct homodyne detection, without needing a complete state tomography with the same complexity as if dealing with Gaussian states.
Finally we focus to atomic ensembles described as CV. Measurement induced entanglement between two macroscopical atomic samples was reported experimentally in 2001. There, the interaction between a single laser pulsepropagating through two spatially separated atomic samples combined with a ﬁnal projective measurement on the light led to the creation of pure EPR entanglement between the two samples. We show how to generate, manipulate and detect mesoscopic entanglement between an arbitrary number of atomic samples through a quantum non-demolition matter-light interface. Our proposal extends in a non-trivialway for multipartite entanglement (GHZ and cluster-like) without needing local magnetic ﬁelds. Moreover, we show quite surprisingly that given the irreversiblecharacter of a measurement, the interaction of the atomic sample with a secondpulse light can modify and even reverse the entangling action of the ﬁrst one leavingthe samples in a separable state.

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Kinser, Amber E. "Mothers and Daughters: The Conversations Continue." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/1254.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Thandri, Bharath Kumar. "Design of RF/IF analog to digital converters for software radio communication receivers." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5774.

Повний текст джерела

Анотація:

Software radio architecture can support multiple standards by performing analogto- digital (A/D) conversion of the radio frequency (RF) signals and running reconfigurable software programs on the backend digital signal processor (DSP). A slight variation of this architecture is the software defined radio architecture in which the A/D conversion is performed on intermediate frequency (IF) signals after a single down conversion. The first part of this research deals with the design and implementation of a fourth order continuous time bandpass sigma-delta (CT BP) C based on LC filters for direct RF digitization at 950 MHz with a clock frequency of 3.8 GHz. A new ADC architecture is proposed which uses only non-return to zero feedback digital to analog converter pulses to mitigate problems associated with clock jitter. The architecture also has full control over tuning of the coefficients of the noise transfer function for obtaining the best signal to noise ratio (SNR) performance. The operation of the architecture is examined in detail and extra design parameters are introduced to ensure robust operation of the ADC. Measurement results of the ADC, implemented in IBM 0.25 µm SiGe BiCMOS technology, show SNR of 63 dB and 59 dB in signal bandwidths of 200 kHz and 1 MHz, respectively, around 950 MHz while consuming 75 mW of power from ± 1.25 V supply. The second part of this research deals with the design of a fourth order CT BP ADC based on gm-C integrators with an automatic digital tuning scheme for IF digitization at 125 MHz and a clock frequency of 500 MHz. A linearized CMOS OTA architecture combines both cross coupling and source degeneration in order to obtain good IM3 performance. A system level digital tuning scheme is proposed to tune the ADC performance over process, voltage and temperature variations. The output bit stream of the ADC is captured using an external DSP, where a software tuning algorithm tunes the ADC parameters for best SNR performance. The IF ADC was designed in TSMC 0.35 µm CMOS technology and it consumes 152 mW of power from ± 1.65 V supply.

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Irshad, Yasir. "On some continuous-time modeling and estimation problems for control and communication." Doctoral thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-26129.

Повний текст джерела

Анотація:

The scope of the thesis is to estimate the parameters of continuous-time models used within control and communication from sampled data with high accuracy and in a computationally efficient way.In the thesis, continuous-time models of systems controlled in a networked environment, errors-in-variables systems, stochastic closed-loop systems, and wireless channels are considered. The parameters of a transfer function based model for the process in a networked control system are estimated by a covariance function based approach relying upon the second order statistical properties of input and output signals. Some other approaches for estimating the parameters of continuous-time models for processes in networked environments are also considered. The multiple input multiple output errors-in-variables problem is solved by means of a covariance matching algorithm. An analysis of a covariance matching method for single input single output errors-in-variables system identification is also presented. The parameters of continuous-time autoregressive exogenous models are estimated from closed-loop filtered data, where the controllers in the closed-loop are of proportional and proportional integral type, and where the closed-loop also contains a time-delay. A stochastic differential equation is derived for Jakes's wireless channel model, describing the dynamics of a scattered electric field with the moving receiver incorporating a Doppler shift.

The thesis consists of five main parts, where the first part is an introduction- Parts II-IV are based on the following articles:

Part II - Networked Control Systems

1. Y. Irshad, M. Mossberg and T. Söderström. System identification in a networkedenvironment using second order statistical properties.

A versionwithout all appendices is published as Y. Irshad, M. Mossberg and T. Söderström. System identification in a networked environment using second order statistical properties. Automatica, 49(2), pages 652–659, 2013.

Some preliminary results are also published as M. Mossberg, Y. Irshad and T. Söderström. A covariance function based approachto networked system identification. In Proc. 2nd IFAC Workshop on Distributed Estimation and Control in Networked Systems, pages 127–132, Annecy,France, September 13–14, 2010

2. Y. Irshad and M. Mossberg. Some parameters estimation methods applied tonetworked control systems.A journal submission is made. Some preliminary results are published as Y. Irshad and M. Mossberg. A comparison of estimation concepts applied to networked control systems. In Proc. 19th Int. Conf. on Systems, Signals andImage Processing, pages 120–123, Vienna, Austria, April 11–13, 2012.

Part III - Errors-in-variables Identification

3. Y. Irshad and M. Mossberg. Continuous-time covariance matching for MIMOEIV system identification. A journal submission is made.

4. T. Söderström, Y. Irshad, M. Mossberg and W. X. Zheng. On the accuracy of acovariance matching method for continuous-time EIV identification. Provisionally accepted for publication in Automatica.

Some preliminary results are published as T. Söderström, Y. Irshad, M. Mossberg, and W. X. Zheng. Accuracy analysis of a covariance matching method for continuous-time errors-in-variables system identification. In Proc. 16th IFAC Symp. System Identification, pages 1383–1388, Brussels, Belgium, July 11–13, 2012.

Part IV - Wireless Channel Modeling

5. Y. Irshad and M. Mossberg. Wireless channel modeling based on stochasticdifferential equations .Some results are published as M. Mossberg and Y. Irshad. A stochastic differential equation forwireless channelsbased on Jakes’s model with time-varying phases, In Proc. 13th IEEEDigitalSignal Processing Workshop, pages 602–605, Marco Island, FL, January4–7, 2009.

Part V - Closed-loop Identification

6. Y. Irshad and M. Mossberg. Closed-loop identification of P- and PI-controlledtime-delayed stochastic systems.Some results are published as M. Mossberg and Y. Irshad. Closed-loop identific ation of stochastic models from filtered data, In Proc. IEEE Multi-conference on Systems and Control,San Antonio, TX, September 3–5, 2008

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Graham, Stephen W. "A role analysis of opinion leaders, adopters, and communicative adopters with a dynamically continuous innovation." CSUSB ScholarWorks, 1995. https://scholarworks.lib.csusb.edu/etd-project/1027.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Tennant, John M. "Convolutional coding combined with partial response continuous phase modulation." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316781.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Gukhool, Balkrishna Sharma. "Communication continue en mode infrastructure dans les réseaux véhiculaires utilisant IEEE 802.11P." Mémoire, Université de Sherbrooke, 2009. http://savoirs.usherbrooke.ca/handle/11143/1543.

Повний текст джерела

Анотація:

Les handovers sont des phénomènes inévitables dans les réseaux sans-fil mobiles. Lors du passage d'une station mobile d'un point d'accès à un autre, le handover affecte la qualité des transmissions, et ainsi, il est néfaste à la performance des réseaux sans-fil. De nombreuses techniques de réduction du délai lié au handover ont été proposées, mais la plupart ne sont pas adaptées aux attentes du nouveau type de réseau sans-fil mobile qu'est le réseau véhiculaire. Ce travail propose donc l'implémentation d'une méthode de réduction du délai encouru lors d'un handover dans les réseaux véhiculaires qui opèrent sous une technologie d'accès sans-fil adaptée pour les besoins des réseaux véhiculaires. Le travail est composé de deux blocs : le premier est l'implémentation d'IEEE 802.11p, qui est une variante de la norme générique d'IEEE 802.11 et qui est développée spécialement pour l'accès dans les réseaux véhiculaires, dans un simulateur de réseaux. L'autre partie concerne le choix d'une méthode de réduction du délai lié à l'étape de la recherche du handover. En tenant compte des réalités technologiques, le choix s'est porté sur une technique préconisant l'utilisation des cache pour contenir et diffuser de l'information sur les points d'accès avoisinants. La méthode proposée a été testée et a donné de très bons résultats réalistes. L'intégration des modules complémentaires pour refléter l'ensemble de la technique proposée au niveau du simulateur s'est aussi faite sans problèmes majeurs.

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Huysamen, Gideon Johannes. "The development of a corporate performance communication system that facilitates continuous productivity improvement." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-03102006-113010/.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Frahm, Jennifer Anne. "The Impact of Change Communication on Change Receptivity : Two Cases of Continuous Change." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16124/1/Jennifer_Frahm_Thesis.pdf.

Повний текст джерела

Анотація:

Communication is inextricably linked with the process of organisational change (Lewis, 1999). However, managers report that communication of organisational change is challenging, particularly with the advent of continuously changing organisations (Buchanan, Claydon & Doyle, 1999). Continuously changing organisations are those that seek to be more flexible, more innovative and more responsive to the dynamic external environment. One of the problems associated with continuous change is the resultant impact of successive downsizings, re-engineering efforts and culture changes on employee receptivity to change. Despite the unquestioning adoption of continuous change efforts (Zorn, Christensen, & Cheney, 1999) there is a paucity of research on communication during this type of change. This thesis addresses this knowledge gap by situating the research within a continuous change context. The primary research question is 'how do change communication models impact on employee receptivity to change within a continuous change context', and this question considers issues pertaining to how accurately previous change communication models reflect and explain what occurs within change processes. This topic is examined within two case-study organisations through the use of multiple methods. The analysis occurs through an interpretive framework and utilises Langley's (1999) alternate templates as a strategy to manage the process based research. A model of change communication during continuous change is presented, with the central constructs of the model being monologic change communication, dialogic change communication and the background talk of change. Further, Van de Ven and Poole's (1995) Process Theories of Change are extended to consider the sequencing of the three constructs. The findings suggest that the sequencing of the dominant change communication models is informed by an alignment of individual communication competences and change communication expectations.

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Frahm, Jennifer Anne. "The Impact of Change Communication on Change Receptivity : Two Cases of Continuous Change." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16124/.

Повний текст джерела

Анотація:

Communication is inextricably linked with the process of organisational change (Lewis, 1999). However, managers report that communication of organisational change is challenging, particularly with the advent of continuously changing organisations (Buchanan, Claydon & Doyle, 1999). Continuously changing organisations are those that seek to be more flexible, more innovative and more responsive to the dynamic external environment. One of the problems associated with continuous change is the resultant impact of successive downsizings, re-engineering efforts and culture changes on employee receptivity to change. Despite the unquestioning adoption of continuous change efforts (Zorn, Christensen, & Cheney, 1999) there is a paucity of research on communication during this type of change. This thesis addresses this knowledge gap by situating the research within a continuous change context. The primary research question is 'how do change communication models impact on employee receptivity to change within a continuous change context', and this question considers issues pertaining to how accurately previous change communication models reflect and explain what occurs within change processes. This topic is examined within two case-study organisations through the use of multiple methods. The analysis occurs through an interpretive framework and utilises Langley's (1999) alternate templates as a strategy to manage the process based research. A model of change communication during continuous change is presented, with the central constructs of the model being monologic change communication, dialogic change communication and the background talk of change. Further, Van de Ven and Poole's (1995) Process Theories of Change are extended to consider the sequencing of the three constructs. The findings suggest that the sequencing of the dominant change communication models is informed by an alignment of individual communication competences and change communication expectations.

Стилі APA, Harvard, Vancouver, ISO та ін.

24

Tavakkolnia, Iman. "Advanced optical fibre communication via nonlinear Fourier transform." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/29606.

Повний текст джерела

Анотація:

Optical fibre communication using the Nonlinear Fourier transform (NFT) is one of the potential solutions to tackle the so-called capacity crunch problem in long-haul optical fibre networks. The NFT transforms the nonlinear propagation of temporal signal, governed by the nonlinear Schr ̈odinger equation (NLSE), into simple linear evolutions of continuous and discrete spectra in the so-called nonlinear spectral domain. These spectra and the corresponding nonlinear spectral domain, defined by the NFT, are the generalized counterparts of the linear spectrum and frequency domain defined by the ordinary Fourier transform. Using the NFT, the optical fibre channel is effectively linearised, and the basic idea is to utilize degrees of freedom in the nonlinear spectral domain for data transmission. However, many aspects of this concept require rigorous investigation due to complexity and infancy of the approach. In this thesis, the aim is to provide a comprehensive investigation of data transmission over mainly the continues spectrum (CS) and partly over of the discrete spectrum (DS) of nonlinear optical fibres. First, an optical fibre communication system is defined, in which solely the CS carries the information. A noise model in the nonlinear spectral domain is derived for such a system by asymptotic analysis as well as extensive simulations for different scenarios of practical interest. It is demonstrated that the noise added to the signal in CS is severely signal-dependent such that the effective signalling space is limited. The variance normalizing transform (VNT) is used to mathematically verify the limits of signalling spaces and also estimate the channel capacity. The numerical results predict a remarkable capacity for signalling only on the CS (e.g., 6 bits/symbol for a 2000-km link), yet it is demonstrated that the capacity saturates at high power. Next, the broadening effect of chromatic dispersion is analysed, and it is confirmed that some system parameters, such as symbol rate in the nonlinear spectral domain, can be optimized so that the required temporal guard interval between the subsequently transmitted data packets is minimized, and thus the effective data rate is significantly enhanced. Furthermore, three modified signalling techniques are proposed and analysed based on the particular statistics of the noise added to the CS. All proposed methods display improved performance in terms of error rate and reach distance. For instance, using one of the proposed techniques and optimized parameters, a 7100-km distance can be reached by signalling on the CS at a rate of 9.6 Gbps. Furthermore, the impact of polarization mode dispersion (PMD) is examined for the first time, as an inevitable impairment in long-haul optical fibre links. By semi-analytical and numerical investigation, it is demonstrated that the PMD affects the CS by causing signal-dependent phase shift and noise-like errors. It is also verified that the noise is still the dominant cause of performance degradation, yet the effect of PMD should not be neglected in the analysis of NFT-based systems. Finally, the capacity of soliton communication with amplitude modulation (part of the degrees of freedom of DS) is also estimated using VNT. For the first time, the practical constraints, such as the restricted signalling space due to limited bandwidth, are included in this capacity analysis. Furthermore, the achievable data rates are estimated by considering an appropriately defined guard time between soliton pulses. Moreover, the possibility of transmitting data on DS accompanied by an independent CS signalling is also validated, which confirms the potentials of the NFT approach for combating the capacity crunch.

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Thanachayanont, Apinunt. "Continuous-time integrated filters and oscillators for IF/RF applications." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325356.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Zhao, Qing. "Advanced Synchronization Techniques for Continuous Phase Modulation." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10486.

Повний текст джерела

Анотація:

The objective of this research work is to develop reliable and power-efficient synchronization algorithms for continuous phase modulation (CPM). CPM is a bandwidth and power efficient signaling scheme suitable for wireless and mobile communications. Binary CPM schemes have been widely used in many commercial and military systems. CPM with multilevel symbol inputs, i.e., M-ary CPM, can achieve a higher data rate than binary CPM. However, the use of M-ary CPM has been limited due to receiver complexity and synchronization problems. In the last decade, serially concatenated CPM (SCCPM) has drawn more attention since this turbo-like coded scheme can achieve near Shannon-limit performance by performing iterative demodulation/decoding. Note that SCCPM typically operates at a low signal-to-noise ratio, which makes reliable and power-efficient synchronization more challenging. In this thesis, we propose a novel timing and phase recovery technique for CPM. Compared to existing maximum-likelihood estimators, the proposed data-aided synchronizer can achieve a better acquisition performance when a preamble is short or channel model errors are present. We also propose a novel adaptive soft-input soft-output (A-SISO) module for iterative detection with parameter uncertainty. In contrast to the existing A-SISO algorithms using linear prediction, the parameter estimation in the proposed structure is performed in a more general least-squares sense. Based on this scheme, a family of fixed-interval A-SISO algorithms are utilized to implement blind iterative phase synchronization for SCCPM. Moreover, the convergence characteristics of iterative phase synchronization and detection are analyzed by means of density evolution. Particularly, an oscillatory convergence behavior is observed when cycle slips occur during phase tracking. In order to reduce performance degradation due to this convergence fluctuation, design issues, including delay depth of the proposed algorithms, iteration-stopping criteria and interleaver size, are also discussed. Finally, for completeness of the study on phase synchronization, we investigate the error probability performance of noncoherently detected full-response CPM, which does not require channel (or phase) estimation.

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Hu, Haibo. "Spatial and continuous spatial queries on smart mobile clients /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?COMP%202005%20HU.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Käll, Daniel, and Emelie Lannerhjelm. "Design and Development of Data Acquisition/Processing and Communication Interface for Radar Front-End." Thesis, Linköpings universitet, Fysik och elektroteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-133208.

Повний текст джерела

Анотація:

This thesis follows the design process of a back end. The purpose of this back end is to interface a radar front end, developed by Acreo Swedish ICT, and stream its digitalized output to a PC using Universal Serial Bus (USB) 3.0. The front end, which acts as a basis for this project, is a Frequency Modulated Continuous Wave (FMCW) radar which is connected to the back end by a header. The header connects the digitalized radar signals, together with two SPI-buses and a few GPIO pins. Thus, enabling configuration and set up of the front end board via a PC. The result of the thesis is a data acquisition board that can be used to interface with the front end. The implemented back end features an FPGA to handle the ADC data from the front end, so the board has DSP capabilities, but can also stream the raw radar data. The FPGA is connected to a USB 3.0 controller through a 32-bit parallel interface. The configuration of the front end, via the produced board, is verified in its functionality and can be controlled by a PC using a simple GUI. Commands are sent through the USB 3.0 controller to a front end controller which handles the communication. Since getting the hardware functional has been the main objective of the thesis, the project has been deemed to be successful. The final result is a back end radar prototype, which has the requested core hardware functionalities. In addition to this, the prototype has the capacity to act as a platform for further expanding its functionality after a hand over of the project to Acreo Swedish ICT.

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Irshad, Yasir. "Some problems of modeling and parameter estimation in continous-time for control and communication." Licentiate thesis, Karlstads universitet, Avdelningen för fysik och elektroteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-7128.

Повний текст джерела

Анотація:

Stochastic system identification is of great interest in the areas of control and communication. In stochastic system identification, a model of a dynamic system is determined based on given inputs and received outputs from the system, where stochastic uncertainties are also involved. The scope of the report is to consider continuous-time models used within control and communication and to estimate the model parameters from sampled data with high accuracy in a computational efficient way. Continuous-time models of systems controlled in a networked environment, stochastic closed-loop systems, and wireless channels are considered. The parameters of a transfer function based model for the process in a networked control system are first estimated by a covariance function based approach, relying upon the second order statistical properties of the output signal. Some other approaches for estimating the parameters of continuous-time models for processes in networked environments are also considered. Further, the parameters of continuous-time autoregressive exogenous models are estimated from closed-loop filtered data, where the controllers in the closed-loop are of proportional and proportional integral type, and where the closed-loop also contains a time-delay. Moreover, a stochastic differential equation is derived for Jakes's wireless channel model, describing the dynamics of a scattered electric field with the moving receiver incorporating a Doppler shift.

Article I was still in manuscript form at the time of the defense.

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Isetta, Valentina. "Advances in the application of information and communication technologies in healthcare at the patient's home." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/121468.

Повний текст джерела

Анотація:

INTRODUCTION The pressure to contain health costs, particularly by avoiding hospitalizations and promoting the early discharge of patients, is generating a greater demand for home healthcare at a time when this resource is rapidly becoming less available. Telemedicine has been defined as the use of information and communications technologies (ICT), to deliver health services and transmit health information at distance for the purpose of improving patient’s care and education and to facilitate communication between patients and healthcare professionals. Most of the studies on telemedicine showed a lot of potentialities and possibilities, but did not develop further in the clinical routine because of problems and difficulties involving the use of this technology. Therefore, it seems clear the need of simple and straightforward applications, which can provide useful and widely applicable services to healthcare and as well as reliable data to assess the actual impact of telemedicine on homecare. 2) GENERAL AIM To design, develop, validate and assess the benefit of new Information and Communication Technology (ICT) applications in healthcare at patient’s home. 3) HYPOTHESES 1. An Internet-based support system for monitoring newborn patients after discharge from nursery would improve care, be well accepted by parents and reduce unplanned healthcare, particularly visits to the emergency department; 2. The development of a specific web-based tool could introduce a new strategy for the continuous positive airway pressure (CPAP) therapy follow-up of patients with obstructive sleep apnea syndrome (OSAS), which could improve the CPAP compliance, reduce face-to-face clinical visits, and be more cost-effective; 3. A new telemedicine system for remote CPAP therapy monitoring could provide valuable and useful data about treatment compliance and efficacy for the follow-up of OSAS patients. 4) STUDY 1 - A new Internet-based monitoring tool for the neonatal home care after discharge was successfully developed; - This new monitoring approach resulted in a high level of parental satisfaction with the service; - Using a societal perspective, the cost of the Internet-based follow-up resulted much lower than that of the conventional hospital-based follow-up. Additionally, ED visits in the first month of patients’ life decreased with the use of the Internet-based monitoring system. This telemedicine follow-up strategy proved absolute dominance (both more clinically effective and less costly) over the standard follow-up based on hospital visits; - This Internet-based tool has been effectively transferred to the health system since it is in routine clinical use at the Hospital de Sant Pau in Barcelona (www.petitsacasa.santpau.cat). 5) STUDY 2 - The opinion of the interviewed patients and medical staff about the helpfulness and satisfaction of the telemedicine monitoring approach indicated that the web-based support tool together with the televisit are potentially useful to support the home follow-up of CPAP treatment in OSAS patients; - The high patients’ compliance to the remote monitoring through the online questionnaire suggested this strategy to be helpful and practical for the long-period CPAP therapy control; - The multicenter support system we developed represents a new telemedicine approach to CPAP therapy follow-up for OSAS patients, which seeks enforcing patients’ confidence and improving therapy adherence; - The developed telemedicine support system has been effectively transferred to the health system since it is in use in a multinational clinical trial currently involving 18 hospitals (www.mi-cpap.com). 6) STUDY 3 - The geometry of the telemonitoring device (NOWAPI) does not influence the CPAP treatment; - NOWAPI showed good compatibility with the CPAP machines and an excellent performance in estimating the duration of the CPAP treatment and in detecting residual respiratory events in simulated OSAS patients. The results of this study demonstrated that NOWAPI system could be a valuable tool for telemonitoring the treatment of obstructive sleep apnea;

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Madonsela, Abel Njanyana. "The role of small group communication in a corporate working environment / A.N. Madonsela." Thesis, North-West University, 2011. http://hdl.handle.net/10394/6533.

Повний текст джерела

Анотація:

The purpose of this study was to investigate the effectiveness of small group communication, investigate to what extent small groups communicate within their minibusiness areas within a mining group. The communication role and the influence it has within an organisation, and what structure it takes within the bigger scheme of the organization were also investigated. Many people and organisations form small groups to perform certain jobs, but they do not have a clear understanding of what constitutes a group, essentially what is it that a group can and cannot do. Small groups are always present and employees are always members of one or more small groups. Establishing a precise definition of a small group that is generally accepted by everyone has proven to be a challenge as most scholars come up with different interpretations and definitions of small group communication. A quantitative research method was used for this study as it was deemed suitable for this type of research, but one of the shortcomings of this method is that the data obtained through this method of research is not suitable for generalisations to any population. It is therefore emphasized that it is not the objective of this research to generalise the results of the study, but that it is applicable to the small group communication within the mining group investigated. The sample and data collected were small. A total of 150 questionnaires were sent to two De Beers' mines, Venetia Mine in Limpopo Province and Voorspoed Mine in the Free State Province, requesting employees via their supervisors and line managers to participate in the small group communications survey. The survey revolved mainly around the company's overview of its Continuous Business Improvement (CBI) business system which involved small group initiatives and communication.
Thesis (M.B.A.)--North-West University, Potchefstroom Campus, 2011.

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Alves, Claudenir Modolo. "O contínuo mediático atmosférico." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/27/27161/tde-30052017-142843/.

Повний текст джерела

Анотація:

O contínuo mediático atmosférico é um ponto de partida, uma abertura na busca por compreensão de um fenômeno do mundo contemporâneo que se inicia com as multidões, os públicos, as massas e as maiorias. O contínuo mediático atmosférico é esse novo campo de batalha do mundo atual onde querem ocupar, e nele permanecer, o Estado, o mercado, as maiorias. O contínuo mediático atmosférico é constituído por quatro elementos: 1. O campo das ideias, valores e crenças; 2. A esfera pública; 3. As massas e 4. Os grandes meios de comunicação, com a finalidade de: 4.1 Atuar no imaginário, produzir fascinação e glamour e 4.2 Cooptar as massas para as causas políticas e outros ativismos. A esse novo momento, a esse novo campo de batalha constituído, onde se procura a tudo conectar, tudo energizar, tudo transformar em um medium de comunicação, damos o nome de contínuo mediático atmosférico. Essa nova situação provocada pelo contínuo mediático atmosférico nos faz pensar e problematizar o presente.
The atmospheric mediatic continuum is a starting point, a breaking through the search for understanding of a phenomenon of the contemporary world that begins with the crowds, the public, the masses and the majorities. The atmospheric mediatic continuum is this new battleground of the present world which wants to occupy, and remain in it, the State, the market, the majorities. The atmospheric mediatic continuum consists of four elements: 1. The field of ideas, values and beliefs; 2. The public sphere; 3. The masses; and 4. The major media. This last one, with the purpose of: 4.1 Acting on the imaginary, producing fascination and glamor; and 4.2 Co-opting the masses for political causes and other activism. To this new moment, to this new battleground constituted, where everything is sought to connect, to energize, to transform into a medium of communication, we call the atmospheric mediatic continuum. This new situation provoked by the atmospheric mediatic continuum leads us to think and problematize the present.

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Salomonsson, Tigerström Andreas, and Sebastian Algrim. "Mjukvaruutveckling med Continuous Delivery : En kvalitativ fallstudie om Continuous Practices med fokus på Continuous Delivery." Thesis, Linnéuniversitetet, Institutionen för informatik (IK), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-76357.

Повний текст джерела

Анотація:

Denna uppsats studerar förutsättningarna för att implementera mjukvaruutvecklings - metoden Continuous Delivery (CDE). Problemställningen som lade grunden för studien, var att det inte finns någon enhetlig standard för CDE. Studien ämnade att undersöka om detta innebar att metoden har varierande innebörd inom olika företag och om de således, i viss mån tillämpar skilda tillvägagångssätt med metoden. Ytterligare en aspekt var att se vilka utmaningar företagen upplevde vid övergången till CDE. Att undersöka om det var främst organisatoriska eller utvecklingsrelaterade problem som upplevts. Samt hur de hanterade kommunikation och tillit till medarbetarna och arbetet inom verksamheten under förändringen. För att belysa problemen, beskrevs teori med fokus på organisatoriska och tekniska utmaningar med Continuous - metoderna: Continuous Integration (CI), Continuous Delivery (CDE) och Continuous Deployment (CD). Teorikapitlet samt tidigare studier inkluderade även forskning om kringliggande koncept som DevOps och LEAN. Metoder, vilka kan underlätta implementationen av CDE. Datainsamlingen genomfördes med öppna individuella intervjuer med representanter från sex stycken företag, där de delade med sig av deras erfarenheter av och syn på CDE. Studien visar att anledningen till att företag väljer att arbeta med CDE, är att de vill gå från utvecklingsmetoder, vilka kräver många beslut inför varje förändring, till ett mer flexibelt arbetssätt där de funnit fördelar som: bättre kvalitet på det som levereras, snabbare leverans av affärsvärde till kunder samt kortare feedback - loopar. Företag som gör en övergång till CDE väljer dessutom ofta att inte automatisera hela vägen ut till produktion, enligt CD, då de ser utmaningar med att säkra kvalitén. Studien har identifierat ett antal faktorer som viktiga för en framgångsrik implementering av CDE, samt faktorer som kan resultera i en svår övergång.
This thesis studies the conditions needed for implementing the software development method Continuous Delivery (CDE). The problem identified for the study, is that there is no standardized approach for CDE as of today. The intentions of the study were to determine whether this means that the method will have a shifting tenor within different companies, and if so, will these companies implement the method with different approaches. Another aspect was to determine which types of challenges the companies were faced with during the transition towards CDE. To review whether the challenges were foremost organisational or development related. And how the organisations handled the communication and trust towards the co-workers and the development work within the organisation during the change towards the method. To highlight these issues, we presented theories with focus on organisational and technical challenges with the different Continuous practices were made. The practices being: Continuous Integration (CI), Continuous Delivery (CDE) and Continuous Deployment (CD). The theory chapter and former studies also contains research about surrounding concepts such as DevOps and LEAN methods, which can aim to facilitate the implementation of CDE. The empirical data collection was performed using open individual interviews with informants from six different companies, where they shared their experience and views on the method CDE. The study demonstrates that the reason organisations chose to implement CDE, is that they want to transform from software development methods, which requires a lot of decision making for any change, to a more flexible work procedure, in order to experience benefits such as: better quality of what is delivered, faster deliveries of business value to the customers and faster feedback-loops. Organisations that make the transition towards CDE also tend not to automate all the way to production, as in agreement with CD, this because the organisations identify challenges with assuring that the quality is sufficient. The study has identified a number of factors that are essential for a successful implementation of CDE, along with factors that may result in a less successful implementation.

Стилі APA, Harvard, Vancouver, ISO та ін.

34

Rastgoftar, Hossein. "Planning and Control of Swarm Motion as Continua." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5850.

Повний текст джерела

Анотація:

In this thesis, new algorithms for formation control of multi agent systems (MAS) based on continuum mechanics principles will be investigated. For this purpose agents of the MAS are treated as particles in a continuum, evolving in an n-D space, whose desired configuration is required to satisfy an admissible deformation function. Considered is a specific class of mappings that is called homogenous where the Jacobian of the mapping is only a function of time and is not spatially varying. The primary objectives of this thesis are to develop the necessary theory and its validation via simulation on a mobile-agent based swarm test bed that includes two primary tasks: 1) homogenous transformation of MAS and 2) deployment of a random distribution of agents on to a desired configuration. Developed will be a framework based on homogenous transformations for the evolution of a MAS in an n-D space (n=1, 2, and 3), under two scenarios: 1) no inter-agent communication (predefined motion plan); and 2) local inter-agent communication. Additionally, homogenous transformations based on communication protocols will be used to deploy an arbitrary distribution of a MAS on to a desired curve. Homogenous transformation with no communication: A homogenous transformation of a MAS, evolving in an R^n space, under zero inter agent communication is first considered. Here the homogenous mapping, is characterized by an n x n Jacobian matrix Q(t) and an n x 1 rigid body displacement vector D(t), that are based on positions of n+1 agents of the MAS, called leader agents. The designed Jacobian Q(t) and rigid body displacement vector D(t) are passed onto rest of the agents of the MAS, called followers, who will then use that information to update their positions under a pre-defined motion plan. Consequently, the motion of MAS will evolve as a homogenous transformation of the initial configuration without explicit communication among agents. Homogenous Transformation under Local Communication: We develop a framework for homogenous transformation of MAS, evolving in R^n, under a local inter agent communication topology. Here we assume that some agents are the leaders, that are transformed homogenously in an n-D space. In addition, every follower agent of the MAS communicates with some local agents to update its position, in order to grasp the homogenous mapping that is prescribed by the leader agents. We show that some distance ratios that are assigned based on initial formation, if preserved, lead to asymptotic convergence of the initial formation to a final formation under a homogenous mapping. Deployment of a Random Distribution on a Desired Manifold: Deployment of agents of a MAS, moving in a plane, on to a desired curve, is a task that is considered as an application of the proposed approach. In particular, a 2-D MAS evolution problem is considered as two 1-D MAS evolution problems, where x or y coordinates of the position of all agents are modeled as points confined to move on a straight line. Then, for every coordinate of MAS evolution, bulk motion is controlled by two agents considered leaders that move independently, with rest of the follower agents motions evolving through each follower agent communicating with two adjacent agents.
M.S.M.E.
Masters
Mechanical and Aerospace Engineering
Engineering and Computer Science
Mechanical Engineering; Mechanical Systems

Стилі APA, Harvard, Vancouver, ISO та ін.

35

Alsulaiman, Fawaz Abdulaziz A. "Towards a Continuous User Authentication Using Haptic Information." Thesis, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23946.

Повний текст джерела

Анотація:

With the advancement in multimedia systems and the increased interest in haptics to be used in interpersonal communication systems, where users can see, show, hear, tell, touch and be touched, mouse and keyboard are no longer dominant input devices. Touch, speech and vision will soon be the main methods of human computer interaction. Moreover, as interpersonal communication usage increases, the need for securing user authentication grows. In this research, we examine a user's identification and verification based on haptic information. We divide our research into three main steps. The first step is to examine a pre-defined task, namely a handwritten signature with haptic information. The user target in this task is to mimic the legitimate signature in order to be verified. As a second step, we consider the user's identification and verification based on user drawings. The user target is predefined, however there are no restrictions imposed on the order or on the level of details required for the drawing. Lastly, we examine the feasibility and possibility of distinguishing users based on their haptic interaction through an interpersonal communication system. In this third step, there are no restrictions on user movements, however a free movement to touch the remote party is expected. In order to achieve our goal, many classification and feature reduction techniques have been discovered and some new ones were proposed. Moreover, in this work we utilize evolutionary computing in user verification and identification. Analysis of haptic features and their significance on distinguishing users is hence examined. The results show a utilization of visual features by Genetic Programming (GP) towards identity verification, with a probability equal to 50% while the remaining haptic features were utilized with a probability of approximately 50%. Moreover, with a handwritten signature application, a verification success rate of 97.93% with False Acceptance Rate (FAR) of 1.28% and @11.54% False Rejection Rate (FRR) is achieved with the utilization of genetic programming enhanced with the random over sampled data set. In addition, with a totally free user movement in a haptic-enabled interpersonal communication system, an identification success rate of 83.3% is achieved when random forest classifier is utilized.

Стилі APA, Harvard, Vancouver, ISO та ін.

36

Ahmed, Atheeq. "Human Detection Using Ultra Wideband Radar and Continuous Wave Radar." Thesis, Linköpings universitet, Kommunikationssystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-137996.

Повний текст джерела

Анотація:

A radar works by radiating electromagnetic energy and detecting the reflected signal returned from the target. The nature of the reflected signal provides information about the target’s distance or speed. In this thesis, we will be using a UWB radar and a CW radar to help detect the presence and rough location of trapped survivors by detecting their motions. Range is estimated in the UWB radar using clutter removal with SVD and for the dual frequency CW Radar using STFT and median filtering. The effect of the algorithm parameters on their performance was analyzed. The performance of the implemented algorithms with regards to small motion detection, distance estimation and penetration capability was analyzed. Both systems are certainly capable of human detection and tracking.

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Gunnarsson, Marcus, and Linus Paulsson. "Continuous Improvements towards lean manufacturing." Thesis, Växjö universitet, Institutionen för teknik och design, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-243.

Повний текст джерела

Анотація:

Konkurrenssituationen för dagens tillverkande företag har blivit allt hårdare, nya krav på högre kvalitet och lägre produktionskostnader krävs för att överleva på marknaden. Ett företag som slutar att utvecklas kommer snart att upptäcka att de inte är tillräckligt bra, Bergman & Klefsjö (2001). Detta påstående är allmänt känt, vilket gör att ständiga förbättringar blir en viktig hörnsten inom produktionsfilosofier såsom Lean Manufacturing och Toyota Production System. Ständiga förbättringar är en väldigt viktig aktivitet som ett företag inte kan lyckas med över en natt, problem med både implementation och bibehållande av ett ständigt förbättringsprogram kommer att dyka upp. Det existerar ett stort antal artiklar och böcker om hur man skall klara av dessa svårigheter och lyckas med ett förbättringsprogram, men det saknas bra modeller. Magisteruppsatsen tar upp de faktorer som är viktiga inom förbättringsarbete och en modell föreslås. Denna modell innehåller följande delar: ledningsengagemang, utbildning, design, kommunikation och feedback, mätningar och benchmarking, belöning, klara mål, samt förnyelse. En undersökning utvecklades baserad på modellen och utfördes sedan på sju företag inom Swedwood-koncernen (en av världens största möbeltillverkare) och två svenska företag; ITT Flygt AB och Autoliv Sverige AB. Syftet med undersökningen var att kartlägga hur vardera företag arbetar med de olika delarna i modellen idag; samt hitta bra sätt att arbeta på, s.k. good practice. Undersökningen var indelad i tre delar; först intervju med anställda inom ledningen, därefter en enkätundersökning med ledning respektive operatörer. Undersökningen verifierade de flesta delar av modellen och kan användas för att belysa de delar inom en organisation som behöver förbättras för att lyckas med ett förbättringsprogram. Då företagen kartlades hittades ett antal good practice: 1. Traditionell utbildningsteknik kan alterneras med spel för att öka motivation och förståelse. 2. Mätningar och benchmarking inom ständiga förbättringar skall utföras så att utvecklingen av ett förbättringsprogram kan följas. 3. Eftersom belöning är en av de viktigaste motivationsfaktorerna för operatörer är det väldigt viktigt att definiera och strukturera ett belöningssystem. Genom att lägga ner tid och arbete på att visa och informera de anställda om systemet vill man skapa en allmän kunskap inom företaget. 4. Inom ett förbättringsprogram är det väldigt viktigt med en snabb feedback. 5. De flesta av fallföretagen använder sig av ett individuellt förbättringsprogram. Teamwork rekommenderas eftersom en grupp av individer kan åstadkomma mer tillsammans än individuellt.
The competition within the manufacturing branch becomes harder and harder, and demands such as higher quality and lower production costs has to be attained to stay on the market. A company who stops becoming better, will soon end up just not being good enough, Bergman & Klefsjö (2001). This is a statement commonly known and therefore Continuous Improvement (CI) is one of the cornerstones within production philosophies such as Lean Manufacturing and Toyota Production System. CI is a very important activity but will not be something that a company acquires over a night, and there will be problems both with the implementation and the long-term sustainability of the programme. There exists a large number of articles and books of how to overcome these difficulties and draw up a successful Continuous Improvement Programme (CIP), but there is a lack of good models. In this thesis the factors that are important for CI work are emphasized and a model is suggested. The model includes the following constituents; Management commitment, education, design, communication and feedback, measurements and benchmarking, recognition, clear goals, and regeneration. A survey based on the model was constructed and performed at seven companies within the Swedwood group (one of the world’s biggest furniture manufacturers) and two Swedish companies; ITT Flygt AB and Autoliv Sverige AB. The intention was to map the case companies’ present work within the constituents of the model and to find good practice. The survey was divided into three parts; first interviews with the management and then questionnaires to both management and operators. The survey verified many parts of the suggested model, and can be used with the intention to highlight which area of the organisation that needs to be improved in order to run a successful CIP. During the mapping of the case companies some good practice was found: 1. Traditional education technique can be mixed with games to increase motivation and understanding. 2. In order to follow the progress with a CIP, CI has to be measured and benchmarked. 3. Recognition is one of the most important motivation factors for operators. Therefore it is important to define and structure the recognition system and make a real effort to show and inform employees about the recognition given, so that this will become common knowledge. 4. It is of great importance that there is a rapid feedback within a CIP. 5. Most of the case companies have implemented an individual CIP, teamwork is advocated as a group of individuals can achieve more together than working separately.

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Menzies, David. "Procrustean entanglement concentration, weak measurements and optimized state preparation for continuous-variable quantum optics." Thesis, St Andrews, 2009. http://hdl.handle.net/10023/739.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

39

Boudreau, Valérie. "Problématique de l'évaluation des campagnes de communication publique. La technique de l'évaluation continue : une solution méthodologique ?" Thesis, Université Laval, 2006. http://www.theses.ulaval.ca/2006/24085/24085.pdf.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Depigny-Huet, Christine. "La communication dans le travail : Une activité continue (analyse ergonomique de la conduite des centrales nucléaires)." Paris 13, 1990. http://www.theses.fr/1990PA132018.

Повний текст джерела

Анотація:

La thèse étudie l'activité de communication en situation réelle de travail, en articulant production de connaissances sur le travail collectif, et intervention de terrain sur la fiabilité du fonctionnement. En partant du caractère interactif des comportements de communication, les hypothèses et résultats suivent trois voies: 1) étude de l'organisation réelle du travail, des mécanismes de re-composition des collectifs de travail; à partir des réseaux de communication observables; 2) analyse des compétences particulières développées par les opérateurs pour communiquer au travail, de leur vocabulaire spécifique. Partant de l'analyse de contenu, on peut réduire la diversité des actions accomplies sur un processus hautement complexe à une typologie opérationnelle pour l'étude ergonomique; 3) étude de l'activité de communication comme une activité continue, sous-tendue par des processus cognitifs, finalisée par la conduite du processus. Les discontinuités sont alors recherchées dans les dysfonctionnements de l'activité de communication (analyse systématique avec les opérateurs des incidents à composante humaine survenant dans les centrales pour établir des modèles de dysfonctionnement, puis analyse statistique pour établir le rôle des communications dans les erreurs humaines et leur corrélation avec les autres causes). Enfin des repères sont donnés pour l'intervention ergonomique sur les systèmes de communication dans les processus continus complexes.

Стилі APA, Harvard, Vancouver, ISO та ін.

41

Gladem, Jennifer. "Feasibility of single and dual satellite systems to enable continuous communication capability to a manned Mars mission." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/43916.

Повний текст джерела

Анотація:

Approved for public release; distribution is unlimited
The National Aeronautics and Space Administration’s current proposed timeline for an interplanetary expedition is circa 2030. A manned Mars mission involves many complex requirements for communication with significant challenges including implementation, signal limitations, orbit requirements, and Earth-Sun-Mars occlusion. This analysis is focused on the potential advantages and disadvantages of potential orbits for maintaining communications with a manned mars mission. Areas analyzed will include signal limitations and possible improvements for Mars communication, through recommended frequency, the resulting signal to noise ratio, available channel capacity, and possible data rates of potential orbits. Ultimately, the purpose of this study is to determine (1) will one to two satellites be capable of maintaining continuous communication between a Mars orbit and a Mars ground mission, (2) will one to two satellites be capable of maintaining communication between Mars and Earth, likely through the Deep Space Network (DSN), (3) which frequency or frequencies will best suit Earth-Mars, and Mars relay communication, (4) how many satellites are necessary for continuous communication, including during Mars transit through the solar occlusion zone, and (5) what orbits are necessary to provide continuous communications throughout all the above mission regimes?

Стилі APA, Harvard, Vancouver, ISO та ін.

42

Olsen, Erin Fairlight. "Authentic Out-of-Class Communication in Study Abroad Programs: Success Defined by Continued Motivation and Cultural Appreciation." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2071.pdf.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

43

El, Abboud Ghina. "L'introduction des TIC dans les pratiques pédagogiques des enseignants du FLS : formation, professionnalisation et usages : le cas du Liban." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0064.

Повний текст джерела

Анотація:

Cette étude relève du domaine de la technologie éducative et son usage dans l’enseignement du français. Il est bien connu que l’intégration des technologies aux pratiques enseignantes reste un phénomène complexe. Plusieurs facteurs tels que la formation continue influence ce phénomène. Nous nous sommes alors interrogés sur l’impact d’un dispositif de formation continue, fondé sur la professionnalisation des enseignants, sur l’intégration des TIC (les technologies de l’information et de la communication) dans les pratiques enseignantes en classe de français. Nous avons mené cette recherche en nous basant sur les connaissances émises par les recherches sur les technologies éducatives, la professionnalisation des enseignants et en didactique du français. Ces connaissances nous ont servi pour construire notre cadre théorique et pour concevoir et réaliser notre enquête de terrain. Cette étude s’appuie sur une recherche mixte portant sur l’étude de la situation actuelle de l’intégration des TIC aux pratiques enseignantes dans les écoles libanaises, et sur la compréhension de l’impact des formations continues sur ce phénomène. Afin de cerner l’impact des dispositifs de formation continue sur l’utilisation des TIC par les enseignants, nous menons en premier lieu une première enquête quantitative qui consiste à étudier la situation actuelle de l’intégration des technologies dans les écoles libanaise, et à comprendre l’état de l’équipement technique. Ensuite, nous enquêtons par le biais des entretiens semi-directifs auprès des enseignants de français au cycle primaire, afin de comprendre la portée, mais aussi les limites des formations continues à l’usage des TIC. Savoir dans quelle mesure la formation continue offerte aux enseignants de français du cycle primaire au Liban, favorise l’utilisation des technologies par ces derniers, et comprendre les apports et les limites de ces dispositifs de formation permet d’ aboutir à des nouvelles pistes et nouveaux dispositifs de formation
This study initiated from the domain of educational technologies and its use in French teaching. As we know, the integration of technology into teachers’ practices is still a complex phenomenon. Many factors, like continuous training, influence this processes. Therefore, we wonder about the impact of continuous training on introducing ICT (information and communication technology) into teachers’ practices. The main purpose of this research project is to understand deeply the process of introducing and using ICT at Lebanese schools, and to understand in which ways the professionalization of teachers favors the introduction of ICT into classrooms. We conduct this study while relying on the results produced by research in many fields like educational technology, professionalization of teachers and didactic method of French language. This knowledge serves us to build our literature revue, and realize our field studies. This research is composed of two studies: the first one is quantitive to examine the actual situation of ICT integration; the second is qualitative to understand the impact of training on using ICT in teaching practices in French classes in Lebanese schools. Knowing to which extent continuous training promotes the integration of ICT into teacher’s practices at primary schools, and understanding the contributions and limits of these training allow new proposals of training to improve the introduction of ICT

Стилі APA, Harvard, Vancouver, ISO та ін.

44

Silva, Wagner Alonge da. "Blogs entre o continuum e o degradé : um estudo de gêneros ciberjornalísticos e critérios de noticiabilidade /." Bauru : [s.n.], 2008. http://hdl.handle.net/11449/89394.

Повний текст джерела

Анотація:

Orientador: Ricardo Alexino Ferreira
Banca: Nancy Nuyen Ali Ramadan
Banca: Mauro de Souza Ventura
Resumo: A Internet tem atraído cada vez mais a atenção de pesquisadores como um novo espaço social no qual são gestadas novas formas de comunicação e convivência. Os weblogs seriam então um dos mais recentes canais midiáticos no âmbito do ciberespaço. Diante disso, objetivou-se neste trabalho investigar os critérios de noticiabilidade e valores-notícia que orientam a instauração de um possível novo formato noticioso nos blogs verificando os gêneros ciberjornalísticos das notícias no âmbito de sua emergência enquanto uma mídia no webjornalismo. Propôs-se, portanto, por meio de um estudo exploratório relacionar os dados obtidos junto ao levantamento processual empírico nos três blogs estudados aos questionamentos que perpassam tal reflexão; se o jornalismo praticado nos blogs repete o mesmo padrão da grande mídia, ou se o potencial multimidático destes canais altera os valores-notícias ou provocam um novo agendamento de fato para além do ocorrido na chamada mídia de massa. Seria o novo em curso ou o velho maquiado pela presença de recursos de personalização multimidiática? Nesse sentido, esta pesquisa busca fornecer subsídios teórico-empíricos mais abrangentes sobre os blogs inseridos na discussão ampla da cultura midiática e esfera pública virtual, contribuindo para suprir a lacuna do conhecimento referente a esse novo fenômeno comunicacional
Abstract: Internet has been drawing the interest of researchers as a new social space where new manners of communication and sociability are being sustained. Therefore, weblogs are one of the newest media channels at the scope of cyberspace. Moreover then the objective of this paper is to search the noticiability criteria e "news-value" that guide the establishment of a possible new journalistic configuration on blogs, to verify the ciber journalistic genres of piece of news whereas they rise as a journalistic media in webjournalism. So the proposal is to relate, by means of an exploratory study, the information achieved in the empiric processual survey within the analyzed blogs about the contestations that pass by this consideration; if the journalism that is executed on blogs repeats the same standards of the world media or the multimedia potential of this channels changes the "news-value" or promotes a new agenda, in fact, beyond what happens at the so-called mass media. Would it be that the new one is in motion or the old one is disguised by multimedia personalization resources? For that, this research intents to present ample theoretic and empiric subventions about the blogs introduced at the wide media culture and the virtual public sphere, that contribute to compensate for the lack of studies about this new communication phenomenon
Mestre

Стилі APA, Harvard, Vancouver, ISO та ін.

45

Tomczyk, Martyna. "Sédation continue, maintenue jusqu'au décès : quelle communication dans les unités de soins palliatifs en France et en Pologne ? Pour une éthique de la présence à l'autre." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCB214/document.

Повний текст джерела

Анотація:

Cette thèse d’éthique médicale, située dans une approche interdisciplinaire et tentant de s’affranchir de tout préjugé personnel de la part de l’auteur, tend à apporter un éclairage, aussi objectif que possible, sur une question, jusqu’à présent, inexplorée : la communication sur la sédation continue, maintenue jusqu’au décès, dans les unités de soins palliatifs, en France et en Pologne. En premier lieu, une recherche bibliographique a été réalisée et les principales failles des publications existantes ont été mises en exergue dont deux en particulier : le flou terminologique et conceptuel autour de la notion de sédation dans le champ de la médecine palliative, et de la notion de représentation elle-même. Pour que l’objet de recherche soit correctement cerné, deux notions-clés – la notion de sédation continue, maintenue jusqu’au décès et la notion de représentation – ont été d’abord explicitées, puis articulées entre elles. En second lieu, une recherche qualitative fondée sur l’étude de cas multiples a été réalisée sur le terrain, c’est-à-dire dans différentes unités de soins palliatifs, en France et en Pologne. Deux méthodes qualitatives ont été adoptées : l’analyse de dossiers et les entretiens semi-directifs individuels. Ces derniers ont été réalisés auprès des principaux acteurs impliqués dans une situation de communication : les médecins prescripteurs, les infirmières et les proches des malades sédatés. Les malades n’ont pas été interrogés, mais leurs témoignages ont été recueillis via les entretiens avec les professionnels de santé et les proches. Quinze cas complets par pays, soit trente cas en tout, ont été inclus dans l’étude. Les données obtenues ont été analysées à l’aide d’outils linguistiques adaptés. Les résultats ont montré que les représentations de la « sédation continue, maintenue jusqu’au décès », faites par les professionnels de santé, avaient un impact sur la délivrance de l’information. Une certaine influence des contextes nationaux a été observée, dans la plupart des cas. En revanche, les souhaits des malades et de leurs proches, quant au contenu de l’information, étaient les mêmes dans les deux pays. Par ailleurs, ce n’était pas tant l’information stricto sensu qui comptait mais une présence bienveillante. Ce besoin de relation nous a amenés à nous interroger sur une certaine universalité de l’être souffrant, malgré ses particularités, d’où notre proposition d’une éthique de la présence à l’autre. Ne devrait-elle pas être intégrée dans le champ de la médecine palliative ou plutôt dans la médecine toute entière, voire dans nos vies de tous les jours ?
This thesis addresses an issue of medical ethics which has previously been investigated, that of communication concerning continuous sedation until death as practised in palliative care units in France and Poland. Using an interdisciplinary approach, free of any personal preconceptions by the author, it aims to provide an objective insight into the issue. A literature review is performed initially which highlights the main flaws in the existing publications of which there are two in particular: terminological and conceptual confusion around the idea of sedation in palliative medicine and its conceptual representation. In order to properly frame the object of research, two key concepts: continuous sedation until death and representation are first clarified and then linked together. Subsequently, a qualitative multiple-case field study is performed in a number of different palliative care units in France and Poland. Two qualitative methods are used: case analyses and individual semi-structured interviews with the main parties involved in the communication process - prescribing clinicians, nurses and the families and friends of sedated patients. Patients were not directly interviewed but their experiences were accounted for via the interviews with the carers and family members. Thirty completed case, fifteen per country, are included in the study. The data obtained are analysed using the appropriate linguistic tools. The results show that carers' representations of “continuous sedation until death” influence the delivery of information to patients. The national contexts are seen to exert a certain influence in most cases. However, with regard to the content of information, the wishes of patients and family members are the same in both countries. Moreover, it is less the information itself that counts as much as the caring way it is delivered. The emergence from this study of a needful wish to be cared for leads us to question whether, despite individual differences, there is not a universal dimension to the suffering being. This in turn prompts our suggestion of an ethical scope to the presence of the other. Should this not be at the root of palliative medicine and moreover throughout the entire field of medicine? And if that's the case, why not in our everyday lives ?

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Shivaprasad, Mala A. "Dynamic Dealy Compensation and Synchronisation Services for Continuous Media Streams." Thesis, Indian Institute of Science, 1995. https://etd.iisc.ac.in/handle/2005/144.

Повний текст джерела

Анотація:

Multimedia' nature of an application refers to the presence of several media streams in parallel. Whether it is receiving real-time data or retrieving stored data, there exists an end-to-end delay in data transfer from source to destination over the network. This delay experienced can be split into a fixed part and a variable part. Data processing time like coding and decoding at the source and destination are the fixed delays experienced. The variable delay occurs mainly due to queuing at the intermediate nodes during its flow through the network. The variable or unequal delays introduce gaps or discontinuities within a stream. In multi-stream applications where each stream may flow on different routes based on the bandwidth availability experiencing different delays, mismatch between them can also occur. These discontinuities and skews result in poor quality of playout. Clock drift and variations in drift rates between the source/s and destination/s, clock also lead to poor quality of play out. To eliminate these skews and discontinuities, there must be mechanisms, viz., and synchronisation services to convey, reintroduce and maintain the temporal relationship between the media streams for presentation throughout the playout, at the destination. The reintroduction of this lost temporal relationship within a stream and between various media streams for presentation at the destination is the object of multimedia synchronisation and is the subject matter of this thesis. In the presence of synchronised clocks, the main cause of asynchronies between media streams is the difference in delays experienced and the jitter. In this work, to convey the temporal relationship between streams of an application to the playout site, each stream is assigned a priority л, based on its importance to the user. The media streams are then divided into synchronisation units called 'Groups' based on that stream's characteristics which has the highest priority л. A group may therefore consist of one video frame and other data which were generated in that interval. Or may consist of silence and talk-spurt periods of the voice stream with data units of other streams generated in the same interval. Since the quality of playout of temporally related delay-sensitive streams depends upon the delay-experienced, the concept of QoS can be extended to describe the presentation requirements of uch data. Depending on the user perception and the delay experienced, an application can have a range of playout times, giving the best performance. The presentation of many real-time applications can be considered satisfactory even when the delay bound is exceeded by a small amount for a short period of time under varying network conditions. This property can be exploited by defining two sets of QoS parameters, namely QoS optimum and QoSlimit for each real-time application. As the delay and its variations increase, the optimum playout time range decreases. QoS optimum specifies the performance parameters required to perceive 'realtime'. Multimedia data can be played out at its QoSlimit with a deterioration in quality under poor network conditions still maintaining the synchronisation between streams. To control the playout at two levels of QoS, and maintain intra-media and inter-media synchronisation, stream controllers and super stream controllers have been used. The dynamic delay compensation algorithm and synchronisation services were simulated using network delay models and performances studied. It is shown that the proposed algorithm not only synchronised media streams and smoothened jitter but also optimised buffer space and buffer occupancy time while meeting the desired quality of service requirements

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Shivaprasad, Mala A. "Dynamic Dealy Compensation and Synchronisation Services for Continuous Media Streams." Thesis, Indian Institute of Science, 1995. http://hdl.handle.net/2005/144.

Повний текст джерела

Анотація:

Multimedia' nature of an application refers to the presence of several media streams in parallel. Whether it is receiving real-time data or retrieving stored data, there exists an end-to-end delay in data transfer from source to destination over the network. This delay experienced can be split into a fixed part and a variable part. Data processing time like coding and decoding at the source and destination are the fixed delays experienced. The variable delay occurs mainly due to queuing at the intermediate nodes during its flow through the network. The variable or unequal delays introduce gaps or discontinuities within a stream. In multi-stream applications where each stream may flow on different routes based on the bandwidth availability experiencing different delays, mismatch between them can also occur. These discontinuities and skews result in poor quality of playout. Clock drift and variations in drift rates between the source/s and destination/s, clock also lead to poor quality of play out. To eliminate these skews and discontinuities, there must be mechanisms, viz., and synchronisation services to convey, reintroduce and maintain the temporal relationship between the media streams for presentation throughout the playout, at the destination. The reintroduction of this lost temporal relationship within a stream and between various media streams for presentation at the destination is the object of multimedia synchronisation and is the subject matter of this thesis. In the presence of synchronised clocks, the main cause of asynchronies between media streams is the difference in delays experienced and the jitter. In this work, to convey the temporal relationship between streams of an application to the playout site, each stream is assigned a priority л, based on its importance to the user. The media streams are then divided into synchronisation units called 'Groups' based on that stream's characteristics which has the highest priority л. A group may therefore consist of one video frame and other data which were generated in that interval. Or may consist of silence and talk-spurt periods of the voice stream with data units of other streams generated in the same interval. Since the quality of playout of temporally related delay-sensitive streams depends upon the delay-experienced, the concept of QoS can be extended to describe the presentation requirements of uch data. Depending on the user perception and the delay experienced, an application can have a range of playout times, giving the best performance. The presentation of many real-time applications can be considered satisfactory even when the delay bound is exceeded by a small amount for a short period of time under varying network conditions. This property can be exploited by defining two sets of QoS parameters, namely QoS optimum and QoSlimit for each real-time application. As the delay and its variations increase, the optimum playout time range decreases. QoS optimum specifies the performance parameters required to perceive 'realtime'. Multimedia data can be played out at its QoSlimit with a deterioration in quality under poor network conditions still maintaining the synchronisation between streams. To control the playout at two levels of QoS, and maintain intra-media and inter-media synchronisation, stream controllers and super stream controllers have been used. The dynamic delay compensation algorithm and synchronisation services were simulated using network delay models and performances studied. It is shown that the proposed algorithm not only synchronised media streams and smoothened jitter but also optimised buffer space and buffer occupancy time while meeting the desired quality of service requirements

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Calvert, Philip J., and G. E. Gorman. "Testing Article Quality in LIS Journals: The Search Continues presented at the 68th IFLA Council and General Conference, August 18-24, 2002, Glasgow, UK." IFLA, 2002. http://hdl.handle.net/10150/106305.

Повний текст джерела

Анотація:

This is a presentation of the IFLA Section on Library and Information Science Journals, which is organized to bring together library and information science specialists to promote high standards for professional journals by encouraging the free flow of information and the exchange of ideas among editors, publishers, librarians and readers of library journals. This is a report of a pilot study on quality in LIS journals.

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Silva, Wagner Alonge da [UNESP]. "Blogs entre o continuum e o degradé: um estudo de gêneros ciberjornalísticos e critérios de noticiabilidade." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/89394.

Повний текст джерела

Анотація:

Made available in DSpace on 2014-06-11T19:24:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-10-13Bitstream added on 2014-06-13T20:51:16Z : No. of bitstreams: 1 silva_wa_me_bauru.pdf: 1586978 bytes, checksum: 922591b6ec65fd80ef1f89c7ad1cc9df (MD5)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A Internet tem atraído cada vez mais a atenção de pesquisadores como um novo espaço social no qual são gestadas novas formas de comunicação e convivência. Os weblogs seriam então um dos mais recentes canais midiáticos no âmbito do ciberespaço. Diante disso, objetivou-se neste trabalho investigar os critérios de noticiabilidade e valores-notícia que orientam a instauração de um possível novo formato noticioso nos blogs verificando os gêneros ciberjornalísticos das notícias no âmbito de sua emergência enquanto uma mídia no webjornalismo. Propôs-se, portanto, por meio de um estudo exploratório relacionar os dados obtidos junto ao levantamento processual empírico nos três blogs estudados aos questionamentos que perpassam tal reflexão; se o jornalismo praticado nos blogs repete o mesmo padrão da grande mídia, ou se o potencial multimidático destes canais altera os valores-notícias ou provocam um novo agendamento de fato para além do ocorrido na chamada mídia de massa. Seria o novo em curso ou o velho maquiado pela presença de recursos de personalização multimidiática? Nesse sentido, esta pesquisa busca fornecer subsídios teórico-empíricos mais abrangentes sobre os blogs inseridos na discussão ampla da cultura midiática e esfera pública virtual, contribuindo para suprir a lacuna do conhecimento referente a esse novo fenômeno comunicacional
Internet has been drawing the interest of researchers as a new social space where new manners of communication and sociability are being sustained. Therefore, weblogs are one of the newest media channels at the scope of cyberspace. Moreover then the objective of this paper is to search the noticiability criteria e news-value that guide the establishment of a possible new journalistic configuration on blogs, to verify the ciber journalistic genres of piece of news whereas they rise as a journalistic media in webjournalism. So the proposal is to relate, by means of an exploratory study, the information achieved in the empiric processual survey within the analyzed blogs about the contestations that pass by this consideration; if the journalism that is executed on blogs repeats the same standards of the world media or the multimedia potential of this channels changes the news-value or promotes a new agenda, in fact, beyond what happens at the so-called mass media. Would it be that the new one is in motion or the old one is disguised by multimedia personalization resources? For that, this research intents to present ample theoretic and empiric subventions about the blogs introduced at the wide media culture and the virtual public sphere, that contribute to compensate for the lack of studies about this new communication phenomenon

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Avén, Sara. "Continuous learning for health care workers in Tanzania : Design recommendations for an e-learning system within a health portal." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154035.

Повний текст джерела

Анотація:

Continuous learning for health care workers in Tanzania - Design recommendations for an e-learning system within a health portal This report describes a Master thesis conducted at the Human-Computer Interaction Department at KTH The Royal Institute of Technology. The project is based on a nine weeks field study in Tanzania during the spring and summer 2013. The field study was conducted as a Minor Field Study (MFS) financed through Swedish International Development Cooperation Agency, SIDA and ÅF. The aim has been to investigate the users interest, needs and expectations on an e-learning system. Specifically designed for the health care workers in Tanzania, to improve and developed their knowledge within their specific work area. The investigation of these questions resulted in design recommendations that can be used as a basis for future development. The users and their expectations and needs of the e-learning system were mapped down through observations, interviews and questionnaires. The user group was positive to an e-learning system and is interested in ICT, Information and communication technology. The most important result from the research is that to get a successful project, the involvement of the users is critical. Otherwise there is a risk that the user will not use the product. Another important result is that the user does not have his or hers own computer or Internet connection, they are dependent on the hospitals devices and connection. At the same time their schedule at the hospital is very tight and it will be a challenge to find time and a place were the health care workers can use the system. This project is a part of a project called the National Health Portal in Tanzania. It is a co-operation between Sweden and Tanzania about information and communication technologies (ICT) in the health care in Tanzania, in order to facilitate the work. Keywords: ICT, user centered design, e-learning, health care, Minor Field Study, Tanzania
Fortbildning för sjukvårdspersonal i Tanzania - Designrekommendationer för ett e-lärandesystem i en hälsoportal Rapporten beskriver ett examensarbete utfört på Institutionen för Människa-datorinteraktion på Kungliga Tekniska Högskolan (KTH). Projektet baseras på en nio veckors fältstudie i Tanzania under våren och sommaren 2013. Fältstudien är en Minor Field Study (MFS) och finansierades av Styrelsen för internationellt utvecklingssamarbete, SIDA och ÅF AB. Syftet har varit att undersöka användarnas intresse samt behov och förväntningar på ett e-lärandesystem, speciellt designat för sjukvårdspersonalen i Tanzania, för att förbättra och utveckla deras kunskaper inom sitt yrkesområde. Utredningen av dessa frågor har resulterat i designrekommendationer som kan användas som bas i det fortsatta utvecklandet av systemet. Användarna samt deras behov och förväntningar på e-lärandesystemet kartlades genom observationer, intervjuer och enkäter. Resultatet av denna rapport visar på vikten av att användarna är inblandade i projekt för att det ska bli lyckat. Användarna bör vara inblandade i och intresserade av projektet. I annat fall är risken stor att användarna inte vill bidra med sin expertis som just användare och att projekt därmed inte slutförs. Ett annat viktigt resultat är att användaren inte har någon dator eller internetuppkoppling hemma utan använder sig av den som finns på jobbet. Dock är det ett väldigt pressat schema på jobbet och det kommer att bli en utmaning att hitta tid och plats då sjukvårdspersonalen kan använda systemet. Examensarbetet är en del av ett projekt som är ett samarbete mellan Sverige och Tanzania vid namn National Health Portal in Tanzania. National Health Portal in Tanzania är ett projekt som handlar om hur man kan använda sig av informations- och kommunikationsteknologier (IKT) i sjukvården i Tanzania för att underlätta arbetet. Nyckelord: IKT, användarcentrerad design, e-lärande, sjukvård, Minor Field Study, Tanzania

Стилі APA, Harvard, Vancouver, ISO та ін.

Дисертації з теми "Communicative continuum"

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями