Готові списки джерел за темами / Passive traces

Добірка наукової літератури з теми "Passive traces"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Passive traces"

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Prasithrathsint, Amara. "The Establishment of the Neutral Passive and the Persistence of the Adversative Passive in Thai." MANUSYA 4, no. 2 (2001): 77–88. http://dx.doi.org/10.1163/26659077-00402006.

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This study traces the development of the adversative and neutral passives in Thai to draw inferences about their establishment and change. It shows how the word/thùuk/, which used to occur with only a verb with unfavorable meaning to form an adversative passive, is now used with virtually all transitive verbs in Thai. This suggests that the neutral passive has been established in Thai syntax. However, /thùuk/ is ambivalent because it marks both adversative and neutral passives . This means that the adversative passive still persists in Thai, but it is now likely to be marked by /doon/, which has a clear adversative meaning. This passive marker seems to have developed in the track of /thùuk/ and is replacing the equivocal /thùuk/ marker.
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2

MARINEAU-MES, S., and S. TAVOULARIS. "MEASUREMENTS OF FRACTAL SCALING OF A PASSIVE SCALAR IN UNIFORMLY SHEARED TURBULENCE." Fractals 02, no. 02 (June 1994): 273–76. http://dx.doi.org/10.1142/s0218348x94000314.

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Statistics and scaling properties of temperature traces in a uniformly sheared, nearly homogeneous turbulent flow have been investigated experimentally. Heat was injected continuously from an electrically heated, thin ribbon and the fluctuating temperature was measured with a cold wire. By virtue of Taylor's "frozen flow" approximation, the temperature time series was interpreted as a linear section through the heated/unheated fluid interface. The box-counting method was used to reveal the possible fractal scaling of this interface. The results are somewhat mixed. Temperature traces taken away from the centerline of the heated wake appear to exhibit some scaling over a limited range, with a fractal dimension of 0.38 ± 0.05, which, according to the intersection rule, would imply a fractal dimension of about 2.38 for the scalar interface. In contrast, temperature traces taken near the centerline did not show any scaling, but this may be due to the high "density" of such traces, which renders the use of the box-counting algorithm questionable.
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Szuba, Agata. "#TRACES#FEMINISM." DYSKURS. PISMO NAUKOWO-ARTYSTYCZNE ASP WE WROCŁAWIU 25, no. 25 (February 25, 2019): 88–107. http://dx.doi.org/10.5604/01.3001.0012.9831.

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Agata Szuba #tropy#feminizm The contemporary media message can be perceived in two perspec- tives: an active one, in which women perform a role of journalists and editors, and a passive perspective, in which they become a part of media message. The latter aspect is the most controversial for many reasons. Walter Lippmann defines a stereotype as an image created in the mind which allows a subordination of a certain fragment of reality a priori. The media’s visible, negative influence on women has them create a reality beyond the boundaries of acceptance, presenting it in a way the audi- ence expects. A new kind of feminism appears, i.e. one which answers the receiver’s needs (succumbing to the expectations and exposing to the look), and a question appears – whether in the time of the feminist legacy, thereby changes resulting from the development of the media, feminists should gain their own unique style? In a way this is beginning to happen. Due to the development of the media, women gained an unrestricted possibility to express their views, and the reception and availability of the media lifts the restrictions and causes an inconspicuous person to please and sweep the crowd and his or her voice to be impossible to be ignored in the discourse.
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Yuxing Yuan, Yuxing Yuan, Wei Li Wei Li, Jilong Han Jilong Han, Qiguang Feng Qiguang Feng, Haitao Yao Haitao Yao, Qiang Zheng Qiang Zheng, Qianggao Hu Qianggao Hu, and and Shaohua Yu and Shaohua Yu. "Fault monitoring in passive optical network using code division multiplex-based dual-OTDR traces comparison." Chinese Optics Letters 15, no. 3 (2017): 031201–31205. http://dx.doi.org/10.3788/col201715.031201.

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Zhang, Yunke, Fengli Xu, Tong Li, Vassilis Kostakos, Pan Hui, and Yong Li. "Passive Health Monitoring Using Large Scale Mobility Data." Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 5, no. 1 (March 19, 2021): 1–23. http://dx.doi.org/10.1145/3448078.

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In this paper, we investigate the feasibility of using mobility patterns and demographic data to predict hospital visits. We collect mobility traces from two thousand users for around two months. We extract 16 mobility features from these passively collected mobility traces and train an XGBoost model to predict users' hospital visits. We demonstrate that the designed mobility features can significantly improve prediction accuracy (p < 0.01, AUC = 0.79). We further analyze how these mobility features affect the prediction results and measure their importance by using Shapley additive explanation values. We discover that users with less mobility activity, less visit diversity, and few sports facilities, bountiful entertainment around their visited locations are more likely to visit hospitals. Moreover, we conduct predictions on the populations with different demographic features, which achieves meaningful and insightful results, i.e. maintaining a high mobility activity is crucial for older people's health, while fast food store more substantially affects younger people's health; visit patterns can indicate females' health, while the neighborhood environment is more indicative of males, etc. These results shed light on how to use and understand large scale mobility data in health monitoring and other health-related applications in practice.
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Benharref, Abdelghani, Rachida Dssouli, Mohamed Adel Serhani, and Roch Glitho. "Efficient traces’ collection mechanisms for passive testing of Web Services." Information and Software Technology 51, no. 2 (February 2009): 362–74. http://dx.doi.org/10.1016/j.infsof.2008.04.007.

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Li, Yang, Hong Ma, Yuntao Wu, and Li Cheng. "Track-Before-Detect Procedures in AM Radio-Based Passive Radar." International Journal of Antennas and Propagation 2021 (November 13, 2021): 1–12. http://dx.doi.org/10.1155/2021/3911956.

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In amplitude modulation radio-based passive radar, the track-before-detect (TBD) procedures are performed to process long time observation data. This work mainly focuses on the tracking of the time-Doppler and time-azimuth traces of multiple target under real scenarios such as low signal-to-noise ratio, hybrid clutter, severe breaking points, and intersecting traces. A new original approach to deal with the TBD problem of this work is developed. Two types of linear equations according to the simplified radio wave propagation model are formulated, which is the key point of the proposed method. We make the theoretical analysis about how the linear equations can be used to track multiple target, and how multiple target’s constant velocities and initial positions can be estimated, which is an additional parameter estimation capability of the proposed method. Both the simulated data and real experimental data are performed with the proposed method and some conventional TBD methods. Several comparisons of the results are given to verify the effectiveness of the proposed method.
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Liu, Kai, YongTaek Lee, HyunTai Kim, and MaPhooPwint Hlaing. "Mobile Device Passive Integration from Wafer Process." International Symposium on Microelectronics 2011, no. 1 (January 1, 2011): 000878–86. http://dx.doi.org/10.4071/isom-2011-tha1-paper1.

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In this paper, we present some passive components made from silicon substrate technology (Integrated Passive Device process) and integration schemes using these components for RF applications. RF decoupling capacitors from this process are characterized on ESR and ESL performance. Functional blocks (filters, baluns, diplexers, matching, etc) made from the IPD process, have shown good electrical performance with small form-factor features. The thin profiles from the IPDs make them very suitable to be used inside laminate and QFN packages. System-in-Packages or multiple-chip-modules using IPD approaches may have significant size reduction. The low profiles and the small form-factors of the IPDs result in less cross-talk between the IPDs and their nearby components (chips, SMDs, and routing traces, etc), and therefore it is easier to maintain signal integrity for packages.
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McKeown, Denis, Tom Mercer, Kinga Bugajska, Paul Duffy, and Emma Barker. "The visual nonverbal memory trace is fragile when actively maintained, but endures passively for tens of seconds." Memory & Cognition 48, no. 2 (December 23, 2019): 212–25. http://dx.doi.org/10.3758/s13421-019-01003-6.

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AbstractDespite attempts at active maintenance in the focus of attention, the fragile nature of the visual nonverbal memory trace may be revealed when the retention interval between target memoranda and probed recall on a trial is extended. In contrast, a passively maintained or unattended visual memory trace may be revealed as persisting proactive interference extending across quite extended intervals between trials in a recent probes task. The present study, comprising five experiments, used this task to explore the persistence of such a passive visual memory trace over time. Participants viewed some target visual items (for example, abstract colored patterns) followed by a variable retention interval and a probe item. The task was to report whether the probe matched one of the targets or not. A decaying active memory trace was indicated by poorer performance as the memory retention interval was extended on a trial. However, when the probe was a member of the target set from the preceding trial, task performance was poorer than a comparison novel probe, demonstrating proactive interference. Manipulations of the intertrial interval revealed that the temporal persistence of the passive memory trace of an old target was impressive, and proactive interference was largely resilient to a simple ‘cued forgetting’ manipulation. These data support the proposed two-process memory conception (active–passive memory) contrasting fragile active memory traces decaying over a few seconds with robust passive traces extending to tens of seconds.
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Nabeel, Mohamed, Issa M. Khalil, Bei Guan, and Ting Yu. "Following Passive DNS Traces to Detect Stealthy Malicious Domains Via Graph Inference." ACM Transactions on Privacy and Security 23, no. 4 (August 28, 2020): 1–36. http://dx.doi.org/10.1145/3401897.

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Дисертації з теми "Passive traces"

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Devillers, Delphine. "Fiabilisation de la quantification des éléments traces cationiques et anioniques par la technique d'échantillonnage DGT en milieu aquatique naturel." Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0058/document.

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La technique d’échantillonnage passif DGT (« Diffusive Gradients in Thin Films ») possède de nombreux avantages (intégration des variations temporelles, abaissement des limites de quantification) qui font d’elle une méthode prometteuse pour une utilisation en réseaux de mesure pour quantifier les éléments traces dans les eaux naturelles. Cependant, il existe encore des zones d’ombre qui constituent des freins à son utilisation dans un contexte réglementaire. Ce travail a donc pour objectif d’identifier des biais potentiels et ainsi contribuer à fiabiliser la méthode. Cette étude montre que l’obtention d’un résultat avec une incertitude minimisée doit passer par la détermination expérimentale des facteurs d’élution ; cependant, l’utilisation d’une valeur standard de 0,8 pour le Cr(III) et de 0,85 pour Al(III), Cd(II), Co(II), Cu(II), Ni(II), Pb(II) et Zn(II) est proposée afin d’alléger les manipulations tout en conservant une incertitude raisonnable (<10%). L’étude de l’influence de l’encrassement des dispositifs DGT a montré que la sorption des cations Cd(II), Cu(II) et Pb(II) sur les filtres encrassés affectent respectivement peu, modérément et fortement leur accumulation dans les échantillonneurs et donc leur quantification. Des durées d’exposition de moins d’une semaine sont alors préconisées pour ces éléments. En revanche, l’encrassement a eu un impact négligeable sur le Ni(II) et sur les oxyanions As(V), Cr(VI), Sb(V) et Se(VI). Enfin, une méthode de quantification simultanée du Cr(III), essentiel à la vie, et du Cr(VI), toxique, a été développée en vue d’améliorer l’évaluation de la toxicité d’une eau. Un unique échantillonneur DGT fixe les deux formes tandis qu’elles sont ensuite sélectivement séparées par une étape d’élution. Cette méthode est robuste sur une large gamme de forces ioniques et de concentrations en sulfate mais sur une gamme de pH plus restreinte ne couvrant pas toutes les eaux naturelles (4 à 6)
The passive sampling DGT technique (Diffusive Gradients in Thin Films) has a lot of benefits (time-weighted average concentrations, low limits of quantification) and would therefore be a useful tool for monitoring studies to quantify trace elements in natural water. However, there are still some limitations and grey areas that put the brakes on the development of the method for regulatory applications. The aim of this work is to identify potential biases and contribute to increase the method reliability. This study shows that a minimized uncertainty on results can be obtained only if elution factors are experimentally determined; however, standard values of 0.8 for Cr(III) and 0.85 for Al(III), Cd(II), Co(II), Cu(II), Ni(II), Pb(II) and Zn(II) are suggested to reduce manipulations while keeping reasonable uncertainty (<10%). Studying the influence of fouling developed on DGT devices showed that the sorption of cations Cd(II), Cu(II) and Pb(II) had, respectively, a slight, moderate and strong impact on their accumulation in DGT samplers and therefore on their quantification. Samplers should then be deployed for less than one week. In contrast, fouling had a negligible impact on oxyanions As(V), Cr(VI), Sb(V) and Se(VI). Finally, a method was developed to simultaneously quantify both Cr oxidation states naturally occurring in natural waters, which are Cr(III), essential to life, and Cr(VI), toxic. Both forms are accumulated in a single DGT sampler before being selectively separated during an elution step. This method is robust for wide ranges of ionic strengths and sulfate concentrations but for a narrower range of pH (4 to 6)
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Vystavna, Yuliya. "Environmental and socio-economic determinants, their impacts on trace metals and pharmaceuticals in watercourses : a comparison on two watersheds of France and Ukraine." Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14486/document.

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Les objectifs de cette étude comparative de deux bassins versants en France et en Ukraine» sont de trois ordres : i) déterminer l’occurrence des micropolluants émergents (métaux traces et molécules pharmaceutiques) dans les eaux de surface, ii) permettre leur évaluation qualitative et quantitative et enfin iii) estimer leur distribution en fonction du contexte socio-économique. Cette recherche porte sur l'analyse de l'origine, sur les propriétés physico-chimiques et sur le comportement des micropolluants (métaux traces et molécules pharmaceutiques) dans les eaux de surface des rivières Jalle (Bordeaux, France) et Udy & Lopan (Kharkiv, Ukraine). Un suivi des métaux traces et des produits pharmaceutiques dans les eaux naturelles de surface dans différents contextes et conditions climatiques a été réalisé. La description et l'analyse des facteurs environnementaux et socio-économiques influençant l’hydrochimie locale en vue de conclure sur l’opportunité et l'intérêt des micropolluants émergents comme indicateurs anthropiques du contexte socio-économique et environnemental d‘un bassin versant ont été mis en œuvre. L’étude a combiné des techniques de prélèvements d’échantillons d’eau classiques et par capteurs passifs in situ. L’analyse semi quantitative des micropolluants émergents a porté sur les métaux traces (sonde DGT) et les produits pharmaceutiques (POCIS). L’usage de ces capteurs a permis d’évaluer les différentes formes d'éléments, les sources, les variations saisonnières et spatiales, l'accumulation et les risques environnementaux. A partir des données environnementales collectées, acquises, actualisées et validées il a été possible de modéliser la consommation régionale de médicaments dans le cas de (1) la région de Kharkiv, en Ukraine, sur les rivières Lopan et Udy du bassin Seversky Donets et (2) la région de Bordeaux, en France, sur la rivière Jalle, du bassin de la Garonne. Les sites ont été sélectionnés pour représenter une diversité tant du point de vue de l'état de pollution des eaux (nature et flux) que de celui du paysage socio-économique (contexte urbain, social et indicateurs économiques). Les résultats majeurs de cette étude sont : (i) méthodologique pour le développement et la validation de protocoles d’échantillonnage classique et passif (intérêt, limites, recommandations), ii) analytique quant à la mesure des éléments traces des eaux de surface naturelles dans des conditions extrêmes, iii) scientifique par l’obtention d’un jeu de données sur l’hydrochimie des éléments traces ( présence, accumulation, origine et variabilité spatiale et temporelle et iv) prospectif quant à l’usage des métaux traces et de produits pharmaceutiques comme traceurs anthropiques de l’état des eaux naturelles de surfaces et reflet du contexte socio-économique. La modélisation socio-économique (statistique) et environnementale (balance de masse) aide à comprendre l’évolution de la qualité des eaux de surface dans leur contexte régional et permet d’identifier certains contaminants comme des indicateurs des activités anthropiques d’un bassin versant et permet de définir une typologie. L’ensemble des résultats de la thèse sont présentés sous la forme d'articles publiés ou soumis dans des revues scientifiques internationales
The PhD study focuses on the understanding of processes of the impact of environmental and socio-economic determinants on the occurrence, accumulation and distribution of trace metals and pharmaceuticals in urban watercourses. The research has been based on the analysis of the origin; physico-chemical properties and behavior of trace pollutants. The study was performed in two general steps: (i) monitoring of trace metals and pharmaceuticals in natural waters; (ii) description and analysis of environmental and socio-economic determinants that influence the water chemistry and (iii) evaluation of trace pollutants as environmental and socio-economic indicators. The monitoring of trace metals in natural water was proceed using the combination of passive and grab water sampling techniques, in order to evaluate various forms of elements, sources, seasonal and spatial variations, accumulation and environmental risks associated with the presence of contaminants in the study areas. The monitoring of pharmaceuticals was done using passive sensors to determine their capacity to register chemicals variation in time and adequation to use environmental data for the regional medicament consumption modeling. Monitoring data were also investigated in term of potential applications of trace metals and pharmaceuticals as environmental and socio-economic indicators. Two study sites were chosen: (1) the Kharkiv region in Ukraine where research was focused on the Lopan and Udy rivers of the Seversky Donets water basin and (2) the Bordeaux region in France where water monitoring was done in the Jalle River, Garonne water basin. Sites were mainly selected to represent the water pollution status in different socio-economic regions. General PhD results can be described as follows:1. The methodology for pilot and continuous monitoring of trace elements in the water with combination of traditional (grab) and innovative (passive) sampling procedures help to get data on trace elements presence, accumulation and sources, considering time variations.2. The analysis of trace metals and pharmaceuticals in two river basins of France and Ukraine and determination of environmental factors that impact on the occurrence, accumulation and distribution of these chemicals.3. The establishment of links between regional socio-economic issues and water quality data. The socio-economic and environmental modeling helps us to understand the water pollution process in regional context and give the opportunity to propose contaminants as tracers of anthropogenic activities and water quality assessment.Results of the PhD study are presented in the form of published or submitted peer-reviewed articles
Диссертация «Экологические и социально-экономические факторы распространения металлов и фармацевтических веществ в природных водах: на примере рек Харькова, Украина и Бордо, Франция» на соискание степени Доктора Философии (Environmental Science) подготовлена в рамках договора о научном сотрудничестве и совместном руководстве между Университетом Бордо, Франция и Харьковской национальной академией городского хозяйства, Украина.Актуальность работы связана с сушествующими проблемами мониторинга природных вод, недостатком исследований микро-загрязнителей водотоков как во Франции, так и в Украине, существующим экологическим риском, который возникает при поступлении и накоплении металов и фармацевтических веществ в урбанизированных водотоках, а также возможностью использования химических веществ в качестве экологических и социально – экономических индикаторов. Целью диссертационной работы стало усовершенствование методов мониторинга микро-загрязнителей в природных водах и оценка возможности использования отдельных микро-загрязнителей в качестве экологических и социально-экономических показателей. Предметом исследования являются экологические и социально-экономические факторы, влияющие на распространение металлов и фармацевтических веществ в природных водах. Объектом исследования стали реки Уды и Лопань, Харьковская область, Украина и река Жаль, регион Бордо, Франция.Основные задачи: (1) провести мониторинг рек на различные формы металлов и фармацевтические вещества с применением стандартных и инновационных (пассивных) методов отбора проб; (2) опеределить экологические и социально- экономические факторы, которые влияют на распространение микрозагрязнителей в природных водах; (3) изучить возможность использования металлов и фармацевтических веществ в качестве индикаторов антропогенного загрязнения природных вод.В результате проведенных исследований был: Впервые: (а) осуществлен мониторинг лабильных форм металлов в реках бассейна Северского Донца, в результате которого определены концентрации токсичных металлов в водотоках, источники и количество их поступления; (б) проведен мониторинг фармацевтических веществ в природных водах Украины, (в) определены концентрации и основные источники поступления фармацевтических препаратов и удельные показатели потребления различных медикаментов в Харьковском регионе; Усовершенствованы: (а) методика проведения мониторинга воды за счет применения стандартных и инновационных пассивных методов отбора проб воды в контрастных климатических и гидрологических условиях с целью исследования различных форм загрязнителей и их временных вариаций; (б) балансово-статистическая модель, которая позволяет использовать данные мониторинга природных вод для социально-экономической характеристики регионов – водопользователей; Предложены:(а) система определения геохимического фона рек на основании торий – нормализованных концентраций металлов в донных отложениях; (б) метод использование металлов и фармацевтических веществ в качестве индикаторов поступления сточных вод для идентификации несанкционированных сбросов.Основу диссертационного исследования составили натурные данные полевых исследований рек Харькова и Бордо, которые были организованы и проведены с непосредственным участием автора в 2008 – 2011 гг. Большинство лабораторных анализов было лично проведено автором в сертифицированных лабораториях Университета Бордо и Университета Орлеан, Франция.Диссертация имеет теоретическое и практическое значение для дальнейшего развития мониторинга природных вод, а также повышения уровня экологической и социальной безопасности в регионах. По теме опубликовано 4 статьи в международных журналах с высоким ИМПАКТ фактором, а также 5 статей в изданиях, реглиментированных ВАК Украины и России
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Mouttappa, Pramila. "A symbolic-based passive testing approach to detect vulnerabilities in networking systems." Phd thesis, Institut National des Télécommunications, 2013. http://tel.archives-ouvertes.fr/tel-01017860.

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Due to the increasing complexity of reactive systems, testing has become an important part in the process of the development of such systems. Conformance testing with formal methods refers to checking functional correctness, by means of testing, of a black-box system under test with respect to a formal system specification, i.e., a specification given in a language with a formal semantics. In this aspect, passive testing techniques are used when the implementation under test cannot be disturbed or the system interface is not provided. Passive testing techniques are based on the observation and verification of properties on the behavior of a system without interfering with its normal operation, it also helps to observe abnormal behavior in the implementation under test on the basis of observing any deviation from the predefined behavior. The main objective of this thesis is to present a new approach to perform passive testing based on the analysis of the control and data part of the system under test. During the last decades, many theories and tools have been developed to perform conformance testing. However, in these theories, the specifications or properties of reactive systems are often modeled by different variants of Labeled Transition Systems (LTS). However, these methodologies do not explicitly take into account the system's data, since the underlying model of LTS are not able to do that. Hence, it is mandatory to enumerate the values of the data before modeling the system. This often results in the state-space explosion problem. To overcome this limitation, we have studied a model called Input-Output Symbolic Transition Systems (IOSTS) which explicitly includes all the data of a reactive system. Many passive testing techniques consider only the control part of the system and neglect data, or are confronted with an overwhelming amount of data values to process. In our approach, we consider control and data parts by integrating the concepts of symbolic execution and we improve trace analysis by introducing trace slicing techniques. Properties are described using Input Output Symbolic Transition Systems (IOSTSs) and we illustrate in our approach how they can be tested on real execution traces optimizing the trace analysis. These properties can be designed to test the functional conformance of a protocol as well as security properties. In addition to the theoretical approach, we have developed a software tool that implements the algorithms presented in this paper. Finally, as a proof of concept of our approach and tool we have applied the techniques to two real-life case studies: the SIP and Bluetooth protocol
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4

Toumi, Khalifa. "A trust framework for multi-organization environments." Phd thesis, Institut National des Télécommunications, 2014. http://tel.archives-ouvertes.fr/tel-00997693.

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The widespread of inexpensive communication technologies, distributed data storage and web services mechanisms currently urge the collaboration among organizations. Partners are participating in this environment motivated by several advantages such as: (1) the ability to use external and professional resources, services and knowledge, (2) the reduction of time-consuming requirements and (3) the benefaction of experts experience. However, this collaboration is not perfect since several problems can arise such as the misuse of resources, disclosure of data or inadequate services. Therefore, security is an important concern of the participants. In particular trust management and access control are one of the major security issues for an organization. This thesis addresses these two areas in particular. It proposes a novel and comprehensive trust framework for Multi-Organization Environments. Our approach is organized in four parts. First, we propose a vector based model approach for defining trust vectors. These vectors evaluate a set of requirements, under conditions, and provide a degree of confidence. In our approach, we consider two different types of vectors. On the one hand, a vector that links a user to an organization and, on the other hand, a vector that links two organizations. We also show how these vectors are evaluated and shared among the different organizations, and how we combine the provided trust information in order to enhance the security. Second, the TRUST-OrBAC model was designed to add the previous trust approach to the ORBAC model. Moreover, this solution was applied with a real collaboration network between companies. Third, we present a trust ontology methodology based on access control concepts. This ontology will be used to share the trust beliefs between participants and to make equivalence between their trust objectives. How to define this trust relationship, how to understand the trust objective of a requester, and how to evaluate the recommendation value is addressed in this thesis. Fourth, we improve our work by designing a passive testing approach in order to evaluate the behavior of a user. This contribution is based on the monitoring tool MMT. Finally the entire architecture of our system is proposed
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5

Lelarge, Maria Lidia Meideros Vignol. "Thermochronologie par la méthode des traces de fission d'une marge passive (dôme de Ponta Grossa, se Brésil) et au sein d'une chaîne de collision (zone externe de l'arc alpin, France)." Université Joseph Fourier (Grenoble), 1993. https://tel.archives-ouvertes.fr/tel-00603209.

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La méthode de datation par les traces de fission sur apatite a été appliquée dans deux contextes différents: une marge passive (dôme de Ponta Grossa dans l'état du Paraná au sud-est du Brésil) et une chaine de collision (massifs de Belledonne et du grand Châtelard, ainsi que la zone dauphinoise interne, dans les Alpes occidentales françaises). L'objectif de ce mémoire était de retracer l'histoire du refroidissement des roches de ces deux régions et dans une certaine mesure d'établir une chronologie des processus géodynamiques qui s'y sont produits. Les apatites du dôme de Ponta Grossa ont enregistré le refroidissement provoqué par la surrection-érosion de la serra do mar, chaïne montagneuse qui longe la côte sud-est brésilienne. La serra do mar correspond probablement a une réponse tardive à l'ouverture de l'Atlantique sud, qui s'est effectuée vers 120 MA aux environs de la latitude 26s. Les âges tracés de fission (tf) apparents des 21 échantillons analyses s'échelonnent entre 100 MA et 80 MA. L'analyse des résultats tf sur apatite, obtenus sur les 33 échantillons alpins, indique que l'histoire du refroidissement de cette région est extrêmement complexe. Les âges apparents tf sont compris entre 7,5 MA et 1,7 MA. Les taux de dénudation sont variables selon le secteur étudié et expriment ainsi un comportement différent vis-à-vis des processus tectoniques. Depuis le miocène supérieur jusqu'a 1 MA, les taux de dénudation apparents sont estimes a 0,4 mm/an pour le massif de Belledonne et à 0,7 mm/an pour le grand Châtelard et la zone du flysch. A partir d'un million d'années jusqu'à l'actuel le taux de dénudation apparent augmente et devient de l'ordre de 2 mm/an, pour l'ensemble de la région
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6

VASSIO, LUCA. "Data Analysis and Modelling of Users’ Behaviour on the Web." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2703665.

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As novas tecnologias e as suas aplicações modificaram as nossas interações com o mundo que nos circunda. O advento da Internet, com a sua capilaridade e seu uso generalizo, foi a transformação mais importante e repentina dos últimos 30 anos. Minha pesquisa nasce da necessidade de entender como as pessoas interagem com a web, de compreender como a web está evoluindo, e de modelar os hábitos e comportamentos dos usuários da Internet. Logs que registram o comportamentos dos usuários interagindo com a web, coletados através de medições passivas, oferecem uma oportunidade inigualável para estudar esses fenômenos. Baseado nesse tipo de logs, o meu trabalho foca em dois aspectos complementares: (i) na análise da navegação dos usuários e (ii) na modelagem do comportamento dos usuários. Muitos desafios devem de ser enfrentados para viabilizar essa análise: medições passivas são em geral volumosas, ou seja \textit{big data}, e por isso requerem metodologias e infra-estrutura escaláveis para seu processamento. A análise dos dados necessita de métricas significativas e a introdução de metodologias inovadoras para a obtenção de informações confiáveis, filtradas, limpas e, sobretudo, úteis. A análise requer métodos estatísticos, de aprendizagem de máquina e de mineração de dados robustos. Além disso, a análise deve servir de base para a criação de modelos analíticos que sejam aderentes à realidade. Em soma, entender a aplicabilidade dos modelos é um passo fundamental para analisar possíveis cenários de uso e otimizar a performance dos serviços web. Durante o doutorado eu analisei três anos de dados de cerca de 30\,000 consumidores de Internet de alta velocidade, reconstruindo a atividade dos usuários na web. Reconstruí as suas atividades de navegação, destacando a evolução no uso de diferentes dispositivos, a estrutura da navegação e a interação dos usuários com as redes sociais e os motores de busca. Introduzi uma nova metodologia de aprendizado de máquina para identificar páginas web e sites intencionalmente solicitados pelos usuários nos logs de medidas passivas. A partir dessas informações, demonstrei ser possível criar uma assinatura baseado nos sites visitados por cada usuário, que pode ser utilizadas para re-identificar usuários, com claras implicações para a privacidade on-line. Modelei a sequência de serviços visitados pelos usuários na web, representando-os de forma sucinta e interpretável. Mostrei como extrair automaticamente grupos de sites similares ou conectados, agrupando os interesses de usuários e de comunidades. Também modelei a interação dos usuários com sistemas de recomendação on-line, apresentando um modelo de comportamento que captura o impacto da dinâmica temporal dos anúncios exibidos nas páginas. Finalmente, mostrei como melhorar os ganhos de uma plataforma de propaganda digital, otimizando os horários nos quais os anúncios deveriam ser exibidos aos usuários. Os resultados dessa tese têm várias implicações para diferentes personagens na Internet e para a comunidade acadêmica. Na atual transformação digital, todas as pessoas e todos os objetos estão produzindo dados que podem ser explorados para criar novas aplicações revolucionarias. A análise dos dados de navegação nos permite realizar transformações incríveis não só na web, mas também em nossas cidades, na industria e na produção de energia. Aproveitar o conhecimento do comportamento do usuário obtido a partir de medições na rede e depois modelar e otimizar os sistemas, como feito neste trabalho, será um fator chave para a concepção de futuras cidades inteligentes.
Le nuove tecnologie e le loro applicazioni modificano il nostro approccio con ciò che ci circonda. L'avvento di Internet, con la sua capillarità e pervasività, è stata la trasformazione più importante e repentina degli ultimi 30 anni. La mia ricerca è stata guidata dalla necessità di capire come le persone interagiscano con il web, di catturare come il web stesso cambi, e di modellare le abitudini e i comportamenti degli utenti. Tracce e registri dell'attività online, altrimenti dette misure passive, offrono informazioni inestimabili per raggiungere questi obiettivi. Grazie a queste tracce, il mio lavoro si concentra nello studiare il comportamento delle persone quando navigano su Internet, da due punti di vista complementari: (i) l'analisi dei dati di navigazione e (ii) i modelli analitici di comportamento. Tuttavia, vi sono molteplici sfide da affrontare: questo tipo di dati, detti \textit{big data}, necessitano di hardware e software scalabili, e dell'introduzione di metodologie e metriche innovative per ottenere informazioni che siano pulite, affidabili e soprattutto utili. L'analisi dati viene eseguita grazie a metodi statistici, di machine learning e di data mining. Inoltre, l'analisi è un prerequisito per costruire dei modelli analitici dei fenomeni studiati, che siano il più possibile aderenti alla realtà. Infine, capire l'applicabilità dei modelli costruiti è un passaggio fondamentale per ottimizzare le prestazioni e capire i possibili scenari. Più in dettaglio, durante il mio dottorato, ho analizzato 3 anni di dati di circa 30\,000 abitazioni, e ne ho ricostruito le attività online. Grazie a ciò, ho potuto mostrare l'evoluzione nell'utilizzo di diversi dispositivi, la struttura intrinseca delle navigazioni e l'interazione con le reti sociali e i motori di ricerca. Ho introdotto dei sistemi automatici per identificare le pagine e i servizi web intenzionalmente richiesti. Ho anche analizzato la costruzione di profili degli utenti, tracciando i loro domini visitati, per poi mostrare come poterli re-identificare nel futuro. Ho modellato le sequenze di siti visti, rappresentandole succintamente in una maniera facilmente interpretabile. Ho mostrato come estrarre automaticamente gruppi di siti web simili in contenuto o strettamente relazionati, e come riunire interessi e trend di utenti singoli o intere comunità. Ho anche modellato l'interazione con i sistemi di raccomandazione, introducendo un modello di comportamento umano che cattura l'impatto della dinamica temporale delle pubblicità mostrate. Infine, ho migliorato sperimentalmente i ricavi di una piattaforma di pubblicità, ottimizzandone i tempi di visualizzazione delle inserzioni. I miei risultati hanno diverse implicazioni per i molteplici attori nel panorama web e per il mondo della ricerca. Seguendo un corretto approccio scientifico, I dataset usati in questa tesi sono resi disponibili in modo anonimizzato per la comunità, in modo da garantire la riproducibilità dei miei risultati. Inoltre, il tema della privacy online in un mondo in forte cambiamento è stato affrontato e analizzato, con l'obiettivo di trovare un compromesso tra il bisogno di ottenere la conoscenza per lo sviluppo delle tecnologie e la necessità di non violare la riservatezza degli individui. Infine, l'attuale trasformazione digitale comporta che tutte le persone e oggetti producono dati che possano essere sfruttati per creare sconvolgenti possibilità. L'analisi dati ci permette di realizzare incredibili trasformazioni non solo di Internet, ma anche nelle nostre città, nella produzione di energia o nell'industria. Sfruttare i comportamenti delle persone che si ottengono attraverso questi dati, modellare e ottimizzare le prestazioni dei sistemi così come ho fatto in questo lavoro, sarà un fattore chiave per progettare le città intelligenti di un futuro molto vicino.
New technologies and services strongly transform our approach with the world. The Internet and its pervasive use was certainly the most dramatic leap in the last 30 years. My research was driven by the need to understand how people interact with the web, capturing its characteristics and changes, and modelling people's inner habits and interactions. Traces and logs of users' behaviours collected in the Internet (i.e., passive measurements) offer invaluable information to obtain this goal. Thanks to these passive traces, my work focuses on studying the behaviour of the users on the Internet, with focus on two complementary aspects: (i) data analytics, and (ii) user modelling. There are many key challenges to face: (big) data requires the use of scalable software and hardware. It demands also the introduction of innovative methodologies and meaningful metric to obtain trustable, filtered, clean and useful information. Data analytics is performed by means of a variety of statistical, machine learning and data mining approaches. Moreover, it is also a pre-requisite for creating analytical models of the studied phenomena, that should be as much as possible adherent to the reality. Lastly, understanding the applicability of derived models is a fundamental step for optimizing performances and understanding possible scenarios. More in details, during my PhD I analyzed 3 years of data of about 30\,000 households. I reconstruct users' online activity. Thanks to this, I was able to highlight device usage evolution, the intrinsic structure of the navigation and the interactions with social networks and search engines. I introduced a new machine learning approach to identify the intentionally visited web-pages and web-sites. Then, I built specific users' profiles, fingerprinting their visited domains, and then I showed how to re-identify users in a future time. I modelled the sequence of the visited web services, representing them in a succinct and interpretable manner. I showed that I can automatically extract groups of similar or likely connected web-sites, and monitor the interests and browsing patterns of single users or communities. I also modelled the user interaction with online recommendation systems, introducing a user behavioural model that captures the impact of the temporal dynamics of shown advertisement. Lastly, I demonstrate how to improve the revenue of an advertisement platform, optimizing the timings when ads are shown to users. My findings have several direct implications to the different Internet actors and to the research community. Following the scientific approach, I made available the anonymized datasets for the community, in order to guarantee the reproducibility of my results. Moreover, I addressed the problem of privacy online in today changing world, with the objective of finding a trade-off between the desire to obtain knowledge for shaping new technologies and the need to not violate the privacy of individuals. Finally, the current digital transformation implicates that everyone and everything produce data that can be exploited to create new disruptive capabilities. Data analytics allows us to realize incredible transformations not only in the web, but also in our cities, in the energy production, and in manufacturing. Exploiting the knowledge of the users' behaviour from these data, modelling and optimizing system performances as I did in my work, will be a key factor for designing near future smart-cities.
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Villanueva, Jessica Denila. "Suivi par capteurs passifs des polluants émergents dans les eaux de surface en contexte urbain." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR14186/document.

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L’étude a pour objectif de déterminer la qualité des eaux de surface sous différentes conditions climatiques et pratiques de gestion des eaux de surface. Trois sites ont étés choisis pour: (1) la rivière Jalle de Blanquefort, (2) le lac de Bordeaux, France et (3) la rivière Pasig aux Philippines. Les sites français présentent des collecteurs d'eau qui se déversent directement dans les eaux de surface. La rivière Pasig sert de collecteur d'eaux usées en l’absence de stations de traitement des eaux usées et collectées. Au cours des campagnes de mesure, il a été possible de suivre l’impact de la variabilité climatique (pluviométrie) et d’événements aléatoires sur la qualité chimiques (éléments traces métalliques et polluants organiques) des eaux ; en combinant échantillonnage classique et par capteurs passifs. Les propriétés physico-chimiques de l'eau ainsi que les caractéristiques des particules et l'utilisation d'analyses statistiques permettent de préciser le comportement des molécules détectées et de décrire l’evolution hydrochimique des eaux de surface urbaines et estuariennes vis-à-vis d’aléas climatiques contrastés
The study aimed to assess the water quality of the surface water in differingclimate conditions and management practices. Three interesting sites were chosen, (1)Jalle River and (2) Bordeaux Lac both in France and the (3) Pasig River in thePhilippines. The French sites have rainfall and run-off collectors that directly dischargewater to the water bodies. Pasig River, on the other hand, becomes a waste collector aswaste management and treatment plant are lacking. Trace metals and organics(pesticides, herbicides, pharmaceuticals and drugs) were measured. Conventional andpassive sampling approches were employed. The mass fluxes were obtained in order tocalculate the pollution transport. Physico-chemical properties and the particlecharacteristics, integrating statistical analyses, facilitated in explaining the behavior of themeasured molecules and describing the hydrological system in relation to climatevariability
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Veyret, Nathalie. "Traces d'un passage : l'oeuvre de Barbara Pym." Bordeaux 3, 1996. http://www.theses.fr/1996BOR30036.

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Cette etude de l'oeuvre de barbara pym inclut pour la premiere fois en france l'examen des papiers personnels de l'auteur, deposes a la bodleian library, oxford : manuscrits des romans, journal, correspondance, carnets litteraires, textes de conferences. La richesse de ces materiaux permet d'envisager l'etude des romans sous un nouveau jour. L'oeuvre se fait trace du passage de l'auteur dans l'angleterre de l'apres-guerre. Veritable historiographie, elle montre des personnages plutot ternes qui vivent une vie rangee, loin du bruit et de la fureur. Elle pourrait s'articuler sur l'aphorisme de cioran : "rater sa vie, c'est acceder a la poesie". Le monde de pym est le monde de l'insucces, dans lequel les hommes et les femmes se livrent a des jeux de roles sans jamais reussir a communiquer. Les liaisons sont dangereuses, aussi sont-elles evitees. On leur prefere une solitude confortable, agrementee de petits plaisirs egoistes, dont la bonne chere n'est pas des moindres. Le quotidien est detourne et les personnages s'inventent les cles d'une vie marquee au sceau de l'insignifiance. Le texte pymien aussi joue de la banalite pour mieux mettre en lumiere la tragedie de la vie humaine. La tension du recit tient ainsi au poids qui se cache derriere l'insignifiance. Pym reussit a ecrire le livre sur rien appele par flaubert
This study of the works of barbara pym includes for the first time in france the analysis of the author's personal papers deposited at the bodleian library : manuscripts of the novels, her diary, letters, notebooks and conference scripts. The wealth of this material is the starting point for a new study of the novels. The works are the traces of the author's passage in post-var england. Pym's characters are rather dull and lead a quiet unobtrusive life. Pym's world is the world of failure, in which men and women play games but never achieve communication. Love affairs are so dangerous that they are avoided. Solitude sometimes is best company, especially when relieved by the prosaic, mundane pleasures of food for instance. The characters invent a life of their own, in which humdrum tasks play a prominent role. Pym's writing also uses banality to emphasise the tragedy of human life. Simple words bide a profound meaning. Pym achieves this book about nothing flaubert wished for
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Fabbroni, Nicoletta <1979&gt. "Numerical simulations of passive tracers dispersion in the sea." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1733/1/Fabbroni_Nicoletta_Tesi.pdf.

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Fabbroni, Nicoletta <1979&gt. "Numerical simulations of passive tracers dispersion in the sea." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1733/.

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Книги з теми "Passive traces"

1

Leutrat, Jean Louis. Des traces qui nous ressemblent. Seyssel, Ain: Editions Comp'Act, 1990.

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2

Georges Perec, traces of his passage. Birmingham, Ala: Summa Publications, 1988.

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3

Bal, Marcel Bolle de. Les adieux d'un sociologue heureux: Traces d'un passage. Paris: L'Harmattan, 1999.

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4

ill, Shue Kenneth, ed. Hiawatha passing. New York: H. Holt, 1995.

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5

California passage. Waterville, Me: Thorndike Press, 2002.

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6

Fisher, Clay. Santa Fe passage. Waterville, ME: Wheeler Pub., 2002.

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7

Etienne-Jules Marey: A passion for the trace. New York: Zone Books, 1992.

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8

Dagognet, François. Etienne-Jules Marey: La passion de la trace. Paris: Hazan, 1987.

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9

René Char poète du XXe siècle: Un poète doit laisser des traces de son passage. Paris: A. Baudry et Cie, 2011.

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10

McDonnell, Greg. Passing trains: The changing face of Canadian railroading. Erin, Ont: Boston Mills Press, 1996.

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Частини книг з теми "Passive traces"

1

Zarifis, Kyriakos, Mark Holland, Manish Jain, Ethan Katz-Bassett, and Ramesh Govindan. "Modeling HTTP/2 Speed from HTTP/1 Traces." In Passive and Active Measurement, 233–47. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30505-9_18.

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2

Klimova, Ekaterina G., and Gdaly S. Rivin. "Inverse Traces For The Passive Pollutants." In Air Pollution Modeling and Its Application XIII, 243–48. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4153-0_24.

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3

Marchetta, Pietro, Walter de Donato, and Antonio Pescapé. "Detecting Third-Party Addresses in Traceroute Traces with IP Timestamp Option." In Passive and Active Measurement, 21–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36516-4_3.

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4

Luckie, Matthew, and kc claffy. "A Second Look at Detecting Third-Party Addresses in Traceroute Traces with the IP Timestamp Option." In Passive and Active Measurement, 46–55. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04918-2_5.

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5

Zangrilli, Marcia, and Bruce B. Lowekamp. "Applying Principles of Active Available Bandwidth Algorithms to Passive TCP Traces." In Lecture Notes in Computer Science, 333–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-31966-5_28.

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Keller, Reto B. "Components." In Design for Electromagnetic Compatibility--In a Nutshell, 145–88. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14186-7_11.

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AbstractIn order to choose the right components for EMI filters, it is essential to understand the properties and nonideal behavior of passive filter components. Therefore, in this chapter, the high-frequency behavior and other undesirable effects of conductors (wires, cables, PCB traces), resistors, capacitors, inductors, ferrite beads, common-mode chokes, baluns, varistors, and TVS diodes are presented.
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Altan, Hasim, Mona Hajibandeh, Kheira Anissa Tabet Aoul, and Akash Deep. "Passive Design." In Springer Tracts in Civil Engineering, 209–36. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31967-4_8.

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Smith, Haig Z. "Apostasy and Debauchery (1601–1660): Behaviour, Passive Evangelism and the East India and Levant Company Chaplains." In Religion and Governance in England’s Emerging Colonial Empire, 1601–1698, 113–59. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-70131-4_4.

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AbstractThis Chapter investigates an extraordinary group of company agents who have often been overlooked, but were ubiquitous in overseas corporate life; the chaplain. It provides a detailed assessment of the daily lives and responsibilities of chaplains. Moreover, it traces how they became important figures of control who policed over the spiritual and earthly lives of personnel in religiously and governmentally diverse environments of India, the Levant and Japan. This chapter examines how corporate chaplains, such as Edward Terry, Edward Pococke and Patrick Copeland, became instrumental figures in establishing corporate authority, and thereby commercial success, in this period. Furthermore, it reveals, through their published works, such as Terry’s, A Voyage to East-India, Lord’s, A display of two forraigne sects and the letters and works of Pococke, the essential role chaplains played in the corporate exchange of ideas and religious knowledge overseas. Finally, this chapter highlights how, throughout much of its existence, the LC and, for a small period, the EIC’s government, helped to inform the flexible process of how companies established corporate governance abroad and how they interacted with peoples, faiths and cultures.
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Meißner, Pascal. "Passive Scene Recognition." In Springer Tracts in Advanced Robotics, 43–124. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31852-9_3.

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Castaldo, Paolo. "Passive Structural Control." In Springer Tracts in Mechanical Engineering, 1–19. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02615-2_1.

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Тези доповідей конференцій з теми "Passive traces"

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Trevisan, Martino, Idilio Drago, and Marco Mellia. "Measuring Web Speed From Passive Traces." In ANRW '18: Applied Networking Research Workshop. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3232755.3232780.

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Nie, Jiangwu, Huadong Ma, and Lufeng Mo. "Passive Diagnosis for WSNs Using Data Traces." In 2012 IEEE 8th International Conference on Distributed Computing in Sensor Systems (DCOSS). IEEE, 2012. http://dx.doi.org/10.1109/dcoss.2012.63.

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Vassio, Luca, Marco Mellia, Flavio Figueiredo, Ana Paula Couto da Silva, and Jussara M. Almeida. "Mining and modeling web trajectories from passive traces." In 2017 IEEE International Conference on Big Data (Big Data 2017). IEEE, 2017. http://dx.doi.org/10.1109/bigdata.2017.8258416.

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Lall, Pradeep, Jinesh Narangaparambil, Kyle Schulze, and Scott Miller. "Interconnection of Passive Components using Printed Aerosol-Jet Traces." In 2021 20th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (iTherm). IEEE, 2021. http://dx.doi.org/10.1109/itherm51669.2021.9503296.

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Tvardovskii, Aleksandr, and Nina Yevtushenko. "Using Homing Traces for Simplifying Passive Testing of Discrete Event Systems." In 2022 International Russian Automation Conference (RusAutoCon). IEEE, 2022. http://dx.doi.org/10.1109/rusautocon54946.2022.9896240.

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Tricoles, G., and R. A. Hayward. "Passive, Airborne, Synthetic Holographic Imaging of Terrestrial Features With Radio Waves." In Holography. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/holography.1986.wb5.

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Perdisci, Roberto, Igino Corona, David Dagon, and Wenke Lee. "Detecting Malicious Flux Service Networks through Passive Analysis of Recursive DNS Traces." In 2009 Annual Computer Security Applications Conference (ACSAC). IEEE, 2009. http://dx.doi.org/10.1109/acsac.2009.36.

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Bhandal, Amarjit S., and Brian Young. "Improving high-speed SerDes performance using passive microwave filters along package traces." In 2010 IEEE 19th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS). IEEE, 2010. http://dx.doi.org/10.1109/epeps.2010.5642588.

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Saint-Pierre, Cecilia, Francisco Cifuentes, and Javier Bustos-Jimenez. "Detecting anomalies in DNS protocol traces via Passive Testing and Process Mining." In 2014 IEEE Conference on Communications and Network Security (CNS). IEEE, 2014. http://dx.doi.org/10.1109/cns.2014.6997534.

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Sou, Sok-Ian, Fang-Jing Wu, and Jung-Yang Tsai. "ProTrack: Detecting Proximity and Trajectory from Passive Wireless Traces of Mobile Devices." In ICC 2022 - IEEE International Conference on Communications. IEEE, 2022. http://dx.doi.org/10.1109/icc45855.2022.9838892.

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Звіти організацій з теми "Passive traces"

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Huckaby, J. L., K. B. Olsen, D. S. Sklarew, J. C. Evans, and K. M. Remund. Measurements of waste tank passive ventilation rates using tracer gases. Office of Scientific and Technical Information (OSTI), September 1997. http://dx.doi.org/10.2172/552792.

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Dietz, R. N., and R. W. Goodrich. Measurement of HVAC system performance and local ventilation using passive perfluorocarbon tracer technology. Office of Scientific and Technical Information (OSTI), June 1995. http://dx.doi.org/10.2172/95262.

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Shyu, Haw-Jye, and Yung P. Lee. Application of the Bearing Trace, Hough Transform (BTHT) to Passive Shipping Lane Monitoring. Fort Belvoir, VA: Defense Technical Information Center, January 1998. http://dx.doi.org/10.21236/ada337380.

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Zhan, Lang, and Y. C. Yortsos. Identification of the Permeability Field of Porous Medium from the Injection of Passive Tracer. Office of Scientific and Technical Information (OSTI), October 1999. http://dx.doi.org/10.2172/13827.

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Lunden, Melissa, David Faulkner, Elizabeth Heredia, Sebastian Cohn, Darryl Dickerhoff, Federico Noris, Jennifer Logue, Toshifumi Hotchi, Brett Singer, and Max H. Sherman. Experiments to Evaluate and Implement Passive Tracer Gas Methods to Measure Ventilation Rates in Homes. Office of Scientific and Technical Information (OSTI), October 2012. http://dx.doi.org/10.2172/1172653.

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Wagner, Anna, Jon Maakestad, Edward Yarmak, and Thomas Douglas. Artificial ground freezing using solar-powered thermosyphons. Engineer Research and Development Center (U.S.), November 2021. http://dx.doi.org/10.21079/11681/42421.

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Thermosyphons are an artificial ground-freezing technique that has been used to stabilize permafrost since the 1960s. The largest engineered structure that uses thermosyphons to maintain frozen ground is the Trans Alaska Pipeline, and it has over 124,000 thermosyphons along its approximately 1300 km route. In passive mode, thermosyphons extract heat from the soil and transfer it to the environment when the air temperature is colder than the ground temperature. This passive technology can promote ground cooling during cold winter months. To address the growing need for maintaining frozen ground as air temperatures increase, we investigated a solar-powered refrigeration unit that could operate a thermosyphon (nonpassive) during temperatures above freezing. Our tests showed that energy generated from the solar array can operate the refrigeration unit and activate the hybrid thermosyphon to artificially cool the soil when air temperatures are above freezing. This technology can be used to expand the application of thermosyphon technology to freeze ground or maintain permafrost, particularly in locations with limited access to line power.
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Hicks, Jacqueline. Trade Facilitation for Environmental Goods and Services. Institute of Development Studies, March 2021. http://dx.doi.org/10.19088/k4d.2021.038.

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This rapid review synthesises the literature from academic, policy, and knowledge institution sources on how reform in customs procedures can facilitate international trade in environmental goods and services. Overall, it finds that there is a general belief in the literature from the World Trade Organization (WTO), International Trade Center and World Bank, that streamlining customs procedures supports international trade in environmental goods. There is survey evidence that firms exporting environmental goods encounter difficulties with customs procedures at the point of entry. Previous trade facilitation projects have not considered trade in environmental goods, so provide no evidence about what has or has not worked well. The evidence base identified during this literature review was extremely small, and came largely from international trade institutions such as the WTO or World Bank, or research organisations working with them. Most of the references to trade in EGS and customs procedures were mentioned in passing as mutually compatible without going into further detail. One of the few documents to combine trade in EGS with trade facilitation is not available for public viewing.
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Dubeck, Margaret M., Jonathan M. B. Stern, and Rehemah Nabacwa. Learning to Read in a Local Language in Uganda: Creating Learner Profiles to Track Progress and Guide Instruction Using Early Grade Reading Assessment Results. RTI Press, June 2021. http://dx.doi.org/10.3768/rtipress.2021.op.0068.2106.

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The Early Grade Reading Assessment (EGRA) is used to evaluate studies and monitor projects that address reading skills in low- and middle-income countries. Results are often described solely in terms of a passage-reading subtask, thereby overlooking progress in related skills. Using archival data of cohort samples from Uganda at two time points in three languages (Ganda, Lango, and Runyankore-Rukiga), we explored a methodology that uses passage-reading results to create five learner profiles: Nonreader, Beginner, Instructional, Fluent, and Next-Level Ready. We compared learner profiles with results on other subtasks to identify the skills students would need to develop to progress from one profile to another. We then used regression models to determine whether students’ learner profiles were related to their results on the various subtasks. We found membership in four categories. We also found a shift in the distribution of learner profiles from Grade 1 to Grade 4, which is useful for establishing program effectiveness. The distribution of profiles within grades expanded as students progressed through the early elementary grades. We recommend that those who are discussing EGRA results describe students by profiles and by the numbers that shift from one profile to another over time. Doing so would help describe abilities and instructional needs and would show changes in a meaningful way.
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Cada, Glenn F., and Peter E. Schweizer. The Application of Traits-Based Assessment Approaches to Estimate the Effects of Hydroelectric Turbine Passage on Fish Populations. Office of Scientific and Technical Information (OSTI), April 2012. http://dx.doi.org/10.2172/1038082.

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Skalski, J. R., and Albert E. Giorgi. Juvenile Passage Program : A Plan for Estimating Smolt Travel Time and Survival in the Snake and Columbia Rivers. Office of Scientific and Technical Information (OSTI), October 1993. http://dx.doi.org/10.2172/10116873.

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