Bibliografias temáticas / 62C05

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Literatura científica selecionada sobre o tema "62C05"

Autor: Grafiati

Publicado: 5 de outubro de 2024

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Artigos de revistas sobre o assunto "62C05"

Pratesi, M., S. Marchetti, C. Giusti e N. Salvati. "The Use of Spatial Information in Area-level Models: An Evaluation Based on Auxiliary Data Availability". Calcutta Statistical Association Bulletin 75, n.º 2 (novembro de 2023): 155–72. http://dx.doi.org/10.1177/00080683231198589.

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The small area estimation (SAE) theory is widely used when local or domain-specific reliable estimates based on survey data are needed. Small area model-based estimates use a model that links the response variable to some auxiliary information borrowing strength from the related areas. When geographical information on the areas of interest is available, the specification of a spatial area level model can increase the estimates’ efficiency, depending on available auxiliary data. In this article, we first review the most popular area level spatial models, and we then compare their performance under two alternative scenarios of auxiliary information availability to estimate the average equivalized household income in Italian Local Labour Market Areas (LLMAs) using the EU-SILC (European Union Statistics on Income and Living Conditions) survey data. Our findings suggest that the spatial information can “fill the gap” when the covariates do not have a high predictive power, a crucial result when there is lack of auxiliary data. AMS Subject Classification: 62D05, 62G05, 62H11

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Li, Fanjie, Xiaopeng Li e Dongyang Shang. "Dynamic Modeling and Vibration Characteristics Analysis of Deep-Groove Ball Bearing, Considering Sliding Effect". Mathematics 9, n.º 19 (28 de setembro de 2021): 2408. http://dx.doi.org/10.3390/math9192408.

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To study the vibration characteristics of deep-groove ball bearing, considering the influence of sliding, the dynamic model of the DGB 6205 system is established in this paper. The DGB 6205 system model includes the movement of the bearing inner ring in the X and Y directions, the rotation of the cage, the rotation movement of each ball, the revolution movement of each ball and the movement along the radial direction of each ball. Based on the system model, the differential equations of motion of the system are established, and the correctness of the model is verified by experiment. The slip characteristics of the DGB 6205 system are studied by numerical simulation. At the same time, the influence of time-varying load on the vibration characteristics of the system is studied. Then, the sensitivity of system parameters is analyzed. The results show that the sliding speed between the ball and the inner raceway is greater than that between the ball and the outer raceway. The radial vibration response of DGB 6205 system under time-varying load is less than that under constant load. The increase of radial clearance will increase the vibration response of DGB 6205 system.

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MARUȘCA, Teodor, Florin PĂCURAR, Daniyar MEMEDEMIN, Adrian OPREA, Ioana VAIDA, Elena TAULESCU e Nicoleta NICOLA. "Ecological, Agronomic and Anthropogenic Characterization of the Habitat 62C0* Ponto-Sarmatian Steppes in the North of Dobrogea (Romania)". Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture 79, n.º 2 (20 de novembro de 2022): 42–53. http://dx.doi.org/10.15835/buasvmcn-agr:2022.0027.

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Natural habitat of Community interest 62C0* Ponto-Sarmatian steppes is very important at European level due to its high biodiversity. The aim of the paper is to study the grassland systems within the habitat 62C0* Sarmatic pontoon steps and to characterize them from an ecological and agronomic point of view. The floristic studies were carried out on the permanent grasslands of the biogeographical region ROSCI 0201 North Dobrogean Plateau, which for the most part belong to the Natural Habitat of Community Interest 62C0 * Sarmatian pontoon steps. Following the classifications (cluster) resulted 4 groups such as: type Cynodon dactylon, type Bothriochloa ischaemum - Festuca valesiaca, type Festuca valesiaca and type Festuca valesiaca - Stipa capillata.

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Lee, Kang-Hee, Sang-Hyup Lee e Kyung-Wan Koo. "A Study on a Regulation Draft of Inspection and Maintenance for Lightning Protection Facilities based on IEC 62305". Transactions of The Korean Institute of Electrical Engineers 64, n.º 5 (1 de maio de 2015): 838–44. http://dx.doi.org/10.5370/kiee.2015.64.5.838.

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Gopan, Nandu, e Anandu Gopan. "Practice of Electrical Insulation of Lightning Protection Systems in India – Before and After the Publication of the National Building Code of India 2016". Amrit Research Journal 4, n.º 2 (15 de maio de 2024): 25–32. http://dx.doi.org/10.3126/arj.v4i2.65541.

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Lightning protection system (LPS) as per IS/IEC 62305 is mandatory in India for buildings above 15 meters and for special buildings like educational institutions, and hospitals regardless of their height. External LPS (ELPS) can be of isolated or non-isolated type depending upon the nature of the structure. This paper reviews the installation of ELPS before and after the publication of the National Building Code of India 2016 (NBC). This is limited only to ELPS and Internal Lightning protection system (ILPS) is not considered. The installation has been studied as per IS/IEC 62305 on electrical isolation. The conclusion has been drawn based on the installation and the influence of NBC 2016.

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Markowska, Renata, e Zofia Wróbel. "Selected Issues of Safe Operation of the Railway Traffic Control System in the Event of Exposition to Damage Caused by Lightning Discharges". Energies 14, n.º 18 (14 de setembro de 2021): 5808. http://dx.doi.org/10.3390/en14185808.

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Lightning discharge becomes a serious source of interference and damage for electronic and electrical power systems. Safe and reliable operation of railway traffic control systems requires proper protection against the effects of lightning. However, the current standards on lightning protection, PN-EN/EN/IEC 62305, do not cover railway objects. Moreover, there are no other standards or recommendations dedicated to the railway. The paper is an attempt to apply the procedure of lightning risk management according to PN-EN 62305-2 to select the proper protection measures in railway objects. A case study for the signal box with installed relaying and digital stations of the railway traffic control system is analyzed. The analysis comprises calculations based on the current standard PN-EN 62305-2:2012 but including the issues specific to railway traffic control. The risks of lightning losses have been calculated for two cases: without lightning protection measures and with protection measures proposed to decrease the risks below the tolerable values. The results show that a practically effective solution to reduce the risks is applying surge protective devices with proper characteristics. Another way is replacing unshielded incoming lines with shielded ones of given shield bonding way, and supplementing it with surge protective devices when necessary.

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Torres Sanabria, Cesar Alberto, Oscar Ignacio Sánchez e Francisco Santamaría. "Comparación de las normas NTC 4552 de 2008 e IEC 62305 de 2010 para el análisis de riesgo". Revista Tecnura 18, n.º 40 (4 de maio de 2014): 103. http://dx.doi.org/10.14483/udistrital.jour.tecnura.2014.2.a08.

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Para realizar un diseño eficiente de un sistema de protección contra descargas atmosféricas sobre una estructura es necesario evaluar el riesgo que puede presentar en la estructura y cuáles podrían ser los daños y pérdidas consecuentes de ese evento. En este sentido, se deben tener en cuenta los aspectos descritos en la norma NTC 4552 o la IEC 62305 para poder realizar la evaluación del riesgo y, de esta manera, determinar si la estructura implicada necesita o no un sistema de protección contra descargas atmosféricas y, en caso de tener uno, si este necesita modificaciones. La norma colombiana NTC 4552 "Protección contra descargas eléctricas atmosféricas" se basa en los principios descritos en la norma IEC 62305 del 2006. Sin embargo, en la norma IEC 62305 de 2010 se realizaron modificaciones, las cuales varían de forma significativa la evaluación del riesgo y pueden generar un análisis erróneo para el caso colombiano, además, en la norma NTC 4552 se han incorporado resultados de investigaciones realizadas en Colombia y otros países de la región, lo cual ha llevado a que algunos de los parámetros empleados en el análisis y diseño de los sistemas de protección contra rayos sean diferentes a los usados en la normativa internacional.

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Chun Lim, Siow, Ong Chang Shen e Ngu Eng Eng. "An Integrated Lightning Risk Assessment of Outdoor Air-Insulated HV Substations". Energies 15, n.º 20 (18 de outubro de 2022): 7702. http://dx.doi.org/10.3390/en15207702.

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Although various lightning protection methods have been used in the industry, many outdoor high-voltage (HV) substations are still experiencing high failure rates due to lightning strikes. The applications of these rule-of-thumb-based methods generally lack coherence among the practitioners. IEC 62305-2 provides a systematic way for practitioners to assess the lightning risk for buildings or structures in a probabilistic way. However, this standard has not explicitly covered the application of HV substations. Moreover, IEC 62305-2 involves a tedious set of risk factors which may hinder many practitioners from applying the aforementioned standards while other preferred rule-of-thumb methods are available. As IEC 62305-2 does not specify the applicability to lightning risk assessment in HV substations, this paper proposes a novel approach to complement the standard-based risk assessment process. During this integrated risk assessment process, significant risks are identified, followed by ambiguous risks that will be adjusted in subsequent phases. The significant ambiguous risk factors such as fire load function (rf), environmental factor (CE), LPL class, and other governing factors have been analyzed and discussed. By adjusting these significant risk factors, the practitioners will understand the adjusted risk factors in relation to the practical implementation of lightning protection system (LPS). Therefore, integrating the substation characteristics, assumptions, and findings of ambiguous risk factors can result in a successful integrated lightning risk assessment process.

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Cassis-Martinez, R., I. Arosemena, G. Duran, E. Andrade, C. Vizueta e J. Franco. "OGP 6205 Axillary Cystic Hygroma: A case Report". Ultrasound in Medicine & Biology 23 (janeiro de 1997): S119. http://dx.doi.org/10.1016/s0301-5629(97)80750-8.

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Wróbel, Zofia, e Adam St Jagiełło. "The Risk of Lightning Losses in a Structure Equipped with RTC Devices According to the Standard EN 62305-2.2008". Energies 14, n.º 6 (18 de março de 2021): 1704. http://dx.doi.org/10.3390/en14061704.

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Incorrect adjustment of railway traffic control devices (rtc) to the specificity of the area in terms of lightning density may result in their damage by lightning-caused electromagnetic pulses. An associated risk assessment, as the standard in the analyses of the strength of rtc devices, should be made. However, manufacturers of rtc devices typically do not perform tests with respect to such high overvoltage conditions. Particularly in the case of the EN 62305-2 standard, the manufacturers of new rail traffic control devices usually do not carry out such analyses. In this paper, an analysis of the damage vulnerability of rtc devices caused by lightning discharges for a selected structure, including a signal box equipped with digital rtc devices is presented. The necessity of conducting a lightning damage vulnerability analysis for rtc devices is demonstrated. A part of the railway track where lightning discharges occur was analyzed. The results of the risk analysis obtained with the use of the DEHN Risk Tool software and based on the standard EN 62305-2 (2008, Lightning protection. Part 2. Risk management) are presented. Due to the fact that railway devices are not included in the current standard, three documents were adopted for the analysis: two editions of EN/IEC 62305-2 (from 2008 and 2012) and the recommendations of the ITU-International Telecommunication Union ITU-T K.39 (10/1996). The presented analysis is performed according to the 2008 standard version and to the chosen device.

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Teses / dissertações sobre o assunto "62C05"

Pic, Romain. "Statistical postprocessing of ensemble forecasts : theory, application in weather forecasting and verification". Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCD018.

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Cette thèse porte sur l'utilisation de méthodes de post-traitement statistiques dans le but d'améliorer les prévisions d'ensemble. Les prévisions d'ensemble sont des prévisions composées de différents membres dont la diversité tente de capturer l'incertitude liée à la prédiction. Les prévisions d'ensemble souffrent de biais et de sous-dispersion et un post-traitement est donc nécessaire afin d'améliorer leur performance. D'un point de vue théorique, cette thèse apporte des résultats sur le taux de convergence en régression distributionnelle en termes de continuous ranked probability score. De nombreuses méthodes de post-traitement statistiques établies tombent dans le cadre théorique de ce résultat. Par ailleurs, dans le cadre de la collaboration avec Météo-France, une méthode de post-traitement statistique basée sur un réseau de neurones U-Net a été développée afin de remédier aux limitations des méthodes utilisées opérationnellement lors de l'utilisation de données sous forme de grille. Cette thèse propose également la construction de scoring rules propres basées sur l'agrégation et la transformation afin de faciliter la vérification de prévisions probabilistes dans le cas multivarié.En parallèle de la thématique principale de cette thèse, des travaux portant sur la convergence universelle en régression distributionnelle et sur l'utilisation de méthodes de régression distributionnelle pour prédire le risque de récurrence de cancer du sein ont été conduits
This thesis focuses on the use of statistical postprocessing methods to improve ensemble forecasts. Ensemble forecasts are composed of different members whose diversity attempts to capture forecast uncertainties. Ensemble forecasts suffer from bias and underdispersion, and postprocessing is therefore necessary to improve their performance. From a theoretical point of view, this thesis provides rates of convergence for distributional regression in terms of continuous ranked probability score. Numerous well-established statistical post-processing methods fall within the theoretical framework of this result. Furthermore, in collaboration with Météo-France, a statistical postprocessing method based on a U-Net neural network has been developed to overcome the limitations of the methods used operationally when using gridded data. This thesis also proposes the construction of proper scoring rules based on aggregation and transformation to facilitate the verification of probabilistic forecasts in multivariate settings.In parallel with the main theme of this thesis, work has been carried out on universal convergence in distributional regression and on the use of distributional regression methods to predict breast cancer recurrence risk

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Spławski, Piotr. "Japonisme in Polish pictorial arts (1885-1939)". Thesis, University of the Arts London, 2013. http://ualresearchonline.arts.ac.uk/6205/.

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This thesis chronicles the development of Polish Japonisme between 1885 and 1939. It focuses mainly on painting and graphic arts, and selected aspects of photography, design and architecture. Appropriation from Japanese sources triggered the articulation of new visual and conceptual languages which helped forge new art and art educational paradigms that would define the modern age. Starting with Polish fin-de-siècle Japonisme, it examines the role of Western European artistic centres, mainly Paris, in the initial dissemination of Japonisme in Poland, and considers the exceptional case of Julian Fałat, who had first-hand experience of Japan. The second phase of Polish Japonisme (1901-1918) was nourished on local, mostly Cracovian, infrastructure put in place by the ‘godfather’ of Polish Japonisme Feliks Manggha Jasieński. His pro-Japonisme agency is discussed at length. Considerable attention is given to the political incentive provided by the outbreak of the Russo-Japanese war in 1904, which rendered Japan as Poland’s ally against its Russian oppressor. The first two decades of the 20th century are regarded as the ‘Renaissance’ of Japonisme in Poland, and it is this part of the thesis that explores Japanese inspirations as manifested in the genres of portraiture, still life, landscape, representations of flora and fauna, erotic imagery, and caricature. Japonisme in graphic and applied graphic arts, including the poster, is also discussed. The existence of the taste for Japanese art in the West after 1918 is less readily acknowledged than that of the preceding decades. The third phase of Polish Japonisme (1919-1939) helps challenge the tacit conviction that Japanese art stopped functioning as an inspirational force around 1918. This part of the thesis examines the nationalisation of heretofore private resources of Japanese art in Cracow and Warsaw, and the inauguration of official cultural exchange between Poland and Japan. Polish Japonisme within École de Paris, both before 1918 and thereafter, inspired mainly by the painting of Foujita Tsuguharu, is an entirely new contribution to the field. Although Japanese inspirations frequently appeared in Polish painting of the interwar period, it was the graphic arts that became most receptive to the Japanese aesthetic at that time. The thesis includes a case study of Leon Wyczółkowski’s interbellum Japonisme, and interprets it as patriotic transpositions of the work of Hiroshige and the Japanese genre of meisho-e. Japonisme in Polish design and architecture is addressed only in the context of the creation of Polish national style in design (1901-1939). Art schools in Britain and America became important centres for Japonisme at the beginning of the 20th century. The thesis considers the case of Cracow Academy of Fine Arts, which due to radical changes introduced by its new director Julian Fałat, became an important centre for the dissemination of the taste for Japanese art in Poland.

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Kao, David. "The vibro-acoustic modelling and analysis of damage mechanisms in paper". Thesis, University of Greenwich, 2006. http://gala.gre.ac.uk/6205/.

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This thesis investigates the use of the acoustic emission (AE) monitoring technique for use in identifying the damage mechanisms present in paper associated with its production process. The microscopic structure of paper consists of a random mesh of paper fibres connected by hydrogen bonds. This implies the existence of the two damage mechanisms of interest, the failure of a fibre/fibre bond and the failure of a fibre. The majority of this work focuses on the development of a novel hybrid mathematical model which couples the mechanics of the mass/spring model to the acoustic wave propagation model for use in generating the acoustic signal emitted by complex structures of paper fibres under strain. A discussion of the coupling method is presented and the model is then analysed using a simple plucked fibre as a test case with a comparison between the numerical and experimental results. The hybrid mathematical model is then used to simulate small fibre networks aimed at providing information on the acoustic response of each damage mechanism. To do this the mass/spring model must successfully simulate the response of the fibre structure when undergoing a fibre/fibre bond failure or a fibre failure. This can be achieved by dynamically manipulating the mass and spring elements of the fibre structure. The simulated AEs from the two damage mechanisms are then analysed using a Continuous Wavelet Transform (CWT) to provide a two dimensional time/frequency representation of the signal. From the CWT certain features of the AEs can be attributed to each damage mechanism and as such a criteria for the time and frequency properties of each damage mechanism can be formulated. This criterion provides the basis for identifying the damage mechanisms present in the experimental data. The final contribution of this thesis is the investigation of training an intelligent classifier which can dynamically identify the AEs from the two damage mechanisms. This is achieved by converting the time and frequency criteria for each damage mechanisms into a set of features for the training of a Self-Organising Map (SOM). The significant step in this analysis is the method for the extraction of the features from the CWT of the AE. This work successfully combines four different scientific areas, paper physics, acoustic emission technology, data analysis and computational modelling to provide an insight into the micro-mechanics of paper. The most significant contribution of this work is the development of the hybrid model which has the ability to generate the acoustic response of a paper fibre structure undergoing two different damage processes. This alone has provided a significant insight into the micro-mechanics of paper to allow for the identification of the two damage mechanisms when the AEs are analysed with the CWT. Other contributions include the method used for the extraction of relevant features from the CWT to enable the training of a SOM for identifying the type of damage mechanism the AE originated from.

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Peloso, Pietro. "Possibili soluzioni per garantire qos nelle comunicazioni inter-data centers in ambienti cloud computing". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6205/.

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Nel presente lavoro, partendo dalla definizione di alcuni punti chiavi del concetto di cloud computing, si è insistito molto sulle problematiche relative alle performance degli ambenti cloud, e alle diverse proposte attualmente presenti sul mercato con i relativi limiti. Dopo averle illustrate in modo dettagliato, le diverse proposte sono state tra loro messe a confronto al fine di evidenziare, per ciascuna di essa, tanto gli aspetti positivi quanto i punti di criticità.

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Strusi, Valentina <1985&gt. "Toward a 3D in vitro model based on decellularized thymus to maintain adult thymic ephitelial cells functionality". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6205/.

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During my PhD,I have been develop an innovative technique to reproduce in vitro the 3D thymic microenvironment, to be used for growth and differentiation of thymocytes, and possible transplantation replacement in conditions of depressed thymic immune regulation. The work has been developed in the laboratory of Tissue Engineering at the University Hospital in Basel, Switzerland, under the tutorship of Prof.Ivan Martin. Since a number of studies have suggested that the 3D structure of the thymic microenvironment might play a key role in regulating the survival and functional competence of thymocytes, I’ve focused my effort on the isolation and purification of the extracellular matrix of the mouse thymus. Specifically, based on the assumption that TEC can favour the differentiation of pre-T lymphocytes, I’ve developed a specific decellularization protocol to obtain the intact, DNA-free extracellular matrix of the adult mouse thymus. Two different protocols satisfied the main characteristics of a decellularized matrix, according to qualitative and quantitative assays. In particular, the quantity of DNA was less than 10% in absolute value, no positive staining for cells was found and the 3D structure and composition of the ECM were maintained. In addition, I was able to prove that the decellularized matrixes were not cytotoxic for the cells themselves, and were able to increase expression of MHC II antigens compared to control cells grown in standard conditions. I was able to prove that TECs grow and proliferate up to ten days on top the decellularized matrix. After a complete characterization of the culture system, these innovative natural scaffolds could be used to improve the standard culture conditions of TEC, to study in vitro the action of different factors on their differentiation genes, and to test the ability of TECs to induce in vitro maturation of seeded T lymphocytes.

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Lachos, Victor H., e Filidor V. Labra. "Multivariate skew-normal/independent distributions: properties and inference". Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/97108.

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Liu (1996) discussed a class of robust normal/independent distributions which contains a group of thick-tailed cases. In this article, we develop a skewed version of these distributions in the multivariate setting, and we call them multivariate skew normal/independent distributions. We derive several useful properties for them. The main virtue of the members of this family is that they are easy to simulate and lend themselves to an EM-type algorithm for maximum likelihood estimation. For two multivariate models of practical interest, the EM-type algorithm has been discussed with emphasis on the skew-t, the skew-slash, and the contaminated skew-normal distributions. Results obtained from simulated and two real data sets are also reported.
Liu (1996) discute una clase de distribuciones robustas a las que apela como normal/independiente, y que contiene un grupo de distribuciones de colas pesadas. En este artículo desarrollamos una versión asimétrica de tales distribuciones en un escenario multivariado, a las que llamaremos distruciones normales asimétricas independientes multivariadas. Para tales distribuciones derivamos algunas propiedades. La principal virtud de los miembros de esta familia es que son fáciles de simular y se prestan a un algoritmo de tipo EM para realizar estimaciones de máxima verosimilitud de sus parámetros. Para dos modelos multivariados de interés práctico se discute el algoritmo EM con énfasis en las distribuciones t-asimétrica, slash asimétrica y normal asimétrica contaminada. Los resultados obtenidos a partir de simulaciones y de dos conjuntos de datos reales son reportados.

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Laflamme, Patrick. "Superstitious perception in humans and convolutional neural networks". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62605.

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The advent of complex Hierarchical Convolutional Neural Networks (HCNNs) has led to great progress in the field of computer vision, with modern implementations of HCNNs rivalling human performance in object recognition tasks. The design of HCNNs was inspired by current understanding of how the neurons of the human visual system are organized to support object recognition. There are researchers who claim that the computations undertaken by HCNNs are approximating those of the human visual system, because of their high accuracy in predicting the neural activity of regions of the brain involved in object classification (Cichy, Khosla, Pantazis, Torralba, & Oliva, 2016; Khaligh-Razavi & Kriegeskorte, 2014; Yamins et al., 2014). However, there has been little investigation of how HCNNs and humans compare on other tasks that HCNNs have not been trained on. Our study compared the similarity of one HCNN, AlexNet, and humans on a superstitious perception task that involves falsely recognizing a learned object in the absence of strong evidence for its presence. We began by validating a new technique that quantifies human performance on the superstitious perception task. The first phase of the research revealed that human behaviour in the task is dependent on whether participants employed an active or passive task strategy. Next, the responses of our HCNN to the same images were analyzed in a similar manner. The results showed that HCNNs behaved similarly to humans in some ways and differently in others. Specifically, the classification images generated for the HCNN were similar to those derived from human participants, but the HCNN was also more consistent in its responses than humans. A second finding was that the differences in human participants classification images (created by adopting active versus passive strategies) could not be accounted for by simply altering the proportion of false alarm responses in the HCNN. This suggests that HCNNs may be using criteria similar to humans’ perception when evaluating the likelihood of an object being present. The higher similarity between humans and HCNN in the passive condition suggests that the criteria similarities are largest when humans recruit minimal central executive resources in the decision-making process.
Arts, Faculty of
Psychology, Department of
Graduate

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Tomm, Brandon M. "Attentional trade-offs under resource scarcity". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62705.

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Resource scarcity poses challenging demands on the cognitive system. Budgeting with limited resources induces an attentional focus on the problem at hand, but it also comes with a cost. Specifically, scarcity causes a failure to notice beneficial information in the environment, or remember to execute actions in the future, that help alleviate the condition of scarcity. This neglect may arise as a result of attentional narrowing. Attentional trade-offs under scarcity can further determine memory encoding. In seven experiments, we demonstrated that participants under scarcity prioritized price information but neglected a useful discount when ordering food from a menu (Experiment 1); they showed better recall for information relevant to the focal task at a subsequent surprise memory test (Experiments 2 and 3); they performed more efficiently on the focal task but neglect a useful cue in the environment that could save them resources (Experiments 4-6); and they failed to remember the previous instructions to execute future actions that could save them resources (Experiment 7). These results collectively demonstrate that scarcity fundamentally shapes the way people process information in the environment, by directing attention to the most urgent task, while inducing a neglect of other information that can be beneficial. The attentional neglect and memory failures may lead to suboptimal behaviors that further aggravate the condition of scarcity. The results provide new insights on the behaviors of the poor, and also important implications for public policy and the design of welfare services and programs for low-income individuals.
Arts, Faculty of
Psychology, Department of
Graduate

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Luke, Haliburton. "A clinical C-arm base-tracking system using computer vision for intraoperative guidance". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62905.

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Mobile C-arm X-ray machines are commonly used for imaging during orthopaedic surgeries to visualize internal anatomy during procedures. However, there is evidence indicating that excess operating time and radiation exposure result from the use of scouting images to aid C-arm positioning during surgery. Additionally, C-arms are currently used primarily as a qualitative tool. Several techniques have been proposed to improve positioning, reduce radiation exposure, and increase quantitative utility, but they require accurate C-arm position tracking. There have been attempts by other research groups to develop C-arm tracking systems, but there are currently no solutions suitable for use in an operating room. The objective of this thesis is therefore to present the development and verification of a real-time C-arm base-tracking system called OPTIX (On-board Position Tracking for Intraoperative X-rays). The proposed tracking system uses a single floor-facing camera mounted to the base of a C-arm. A computer vision algorithm was developed that tracks motion relative to the operating room floor. This system is capable of relative motion tracking as well as absolute position recovery for previous positions. The accuracy of the system was evaluated on a real C-arm in a simulated operating room. The experimental results demonstrated that the relative tracking algorithm can measure C-arm translation with errors of less than 0.75% of the total distance travelled, and orientation with errors better than 5% of the cumulative rotation. With the incorporated loop closure step, OPTIX can be used to achieve C-arm repositioning with translation errors of less than 1.10±0.07 mm and rotation errors of less than 0.17 ±0.02°. These results are well within the desired system requirements of 5 mm and 3.1°. The system has shown promising results for use as a C-arm base-tracking system. The system has clinically acceptable accuracies and should lead to a reduced need for scouting images when re-obtaining a previous position. The base-tracking system can be integrated with a C-arm joint tracking system, or implemented on its own for steering guidance. When implemented in an operating room, OPTIX has the potential to lead to a reduction in operating time and harmful radiation exposure to surgical staff.
Applied Science, Faculty of
Graduate

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Ntšekhe, Mathe V. K. "Building IKhwezi, a digital platform to capture everyday Indigenous Knowledge for improving educational outcomes in marginalised communities". Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/62505.

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Aptly captured in the name, the broad mandate of Information and Communications Technologies for Development (ICT4D) is to facilitate the use of Information and Communication Technologies (ICTs) in society to support development. Education, as often stated, is the cornerstone for development, imparting knowledge for conceiving and realising development. In this thesis, we explore how everyday Indigenous Knowledge (IK) can be collected digitally, to enhance the educational outcomes of learners from marginalised backgrounds, by stimulating the production of teaching and learning materials that include the local imagery to have resonance with the learners. As part of the exploration, we reviewed a framework known as Technological Pedagogical Content Knowledge (TPACK), which spells out the different kinds of knowledge needed by teachers to teach effectively with ICTs. In this framework, IK is not present explicitly, but through the concept of context(s). Using Afrocentric and Pan-African scholarship, we argue that this logic is linked to colonialism and a critical decolonising pedagogy necessarily demands explication of IK: to make visible the cultures of the learners in the margins (e.g. Black rural learners). On the strength of this argument, we have proposed that TPACK be augumented to become Indigenous Technological Pedagogical Content Knowledge (I-TPACK). Through this augumentation, I-TPACK becomes an Afrocentric framework for a multicultural education in the digital era. The design of the digital platform for capturing IK relevant for formal education, was done in the Siyakhula Living Lab (SLL). The core idea of a Living Lab (LL) is that users must be understood in the context of their lived everyday reality. Further, they must be involved as co-creators in the design and innovation processes. On a methodological level, the LL environment allowed for the fusing together of multiple methods that can help to create a fitting solution. In this thesis, we followed an iterative user-centred methodology rooted in ethnography and phenomenology. Specifically, through long term conversations and interaction with teachers and ethnographic observations, we conceptualized a platform, IKhwezi, that facilitates the collection of context-sensitive content, collaboratively, and with cost and convenience in mind. We implemented this platform using MediaWiki, based on a number of considerations. From the ICT4D disciplinary point of view, a major consideration was being open to the possibility that other forms of innovation—and, not just ‘technovelty’ (i.e. technological/- technical innovation)—can provide a breakthrough or ingenious solution to the problem at hand. In a sense, we were reinforcing the growing sentiment within the discipline that technology is not the goal, but the means to foregrounding the commonality of the human experience in working towards development. Testing confirmed that there is some value in the platform. This is despite the challenges to onboard users, in pursuit of more content that could bolster the value of everyday IK in improving the educational outcomes of all learners.

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Livros sobre o assunto "62C05"

Schindler, Antonín. Navrhování ocelových mostních konstrukcí: Komentář k ČSN 73 6205. Praha: Vydavatelství Úřadu pro normalizaci a měření, 1986.

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Henshaw, Michael L. Protection against lightning: A UK guide to the practical application of BS EN 62305. London: British Standards Institution, 2007.

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United States. National Transportation Safety Board. Derailment of Union Pacific Railroad unit freight train 6205 west near Kelso, California, January 12, 1997. Washington, D.C: National Transportation Safety Board, 1998.

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Miguet, Serge, Annick Montanvert e Stéphane Ubéda, eds. Discrete Geometry for Computer Imagery. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62005-2.

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Huang, Zhisheng, Wouter Beek, Hua Wang, Rui Zhou e Yanchun Zhang, eds. Web Information Systems Engineering – WISE 2020. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-62005-9.

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Li, Wuyungerile, e Dalai Tang, eds. Mobile Wireless Middleware, Operating Systems and Applications. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-62205-3.

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Fares, Gustavo. Domingo F. Sarmiento’s Argirópolis. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-62305-0.

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Wang, Cao. Structural Reliability and Time-Dependent Reliability. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62505-4.

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Warnecke-Berger, Hannes, ed. Development, Capitalism, and Rent. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62605-1.

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Bodden, Eric, Mathias Payer e Elias Athanasopoulos, eds. Engineering Secure Software and Systems. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62105-0.

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Capítulos de livros sobre o assunto "62C05"

Meppelink, Jan. "Applied Pulse Shapes 0.25/100 According to IEC 62305-1". In The Lightning Rod as a Danger, 169–71. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30434-7_19.

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Meppelink, Jan. "Effect of Site Insulation with Gravel According to IEC 62305-3". In The Lightning Rod as a Danger, 89. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30434-7_8.

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Meppelink, Jan. "Effect of Site Insulation with Asphalt According to IEC 62305-3". In The Lightning Rod as a Danger, 57–87. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30434-7_7.

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Françon, Jean. "On recent trends in discrete geometry in computer science". In Discrete Geometry for Computer Imagery, 1–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62005-2_1.

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Frey, Pascal J., e Houman Borouchaki. "Finite element meshes by means of voxels". In Discrete Geometry for Computer Imagery, 113–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62005-2_10.

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Kenmochi, Yukiko, Atsushi Imiya e Norberto F. Ezquerra. "Polyhedra generation from lattice points". In Discrete Geometry for Computer Imagery, 127–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62005-2_11.

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Françon, Jean, Jean-Maurice Schramm e Mohamed Tajine. "Recognizing arithmetic straight lines and planes". In Discrete Geometry for Computer Imagery, 139–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62005-2_12.

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Fiorio, Christophe. "A topologically consistent representation for image analysis: The Frontiers Topological Graph". In Discrete Geometry for Computer Imagery, 151–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62005-2_13.

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Ayala, R., E. Domínguez, A. R. Francés e A. Quintero. "Determining the components of the complement of a Digital (n−1)-manifold in ℤn". In Discrete Geometry for Computer Imagery, 163–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62005-2_14.

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Ibáñez, Luis, Chafiaâ Hamitouche e Christian Roux. "Determination of discrete sampling grids with optimal topological and spectral properties". In Discrete Geometry for Computer Imagery, 177–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62005-2_15.

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Trabalhos de conferências sobre o assunto "62C05"

Siow Chun Lim, Chandima Gomes, Mohd Zainal Abidin Ab Kadir e Jasronita Jasni. "Ambiguity of grounding specifications: IEC 62305 revisited". In 2012 International Conference on Lightning Protection (ICLP). IEEE, 2012. http://dx.doi.org/10.1109/iclp.2012.6344293.

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Javor, Vesna. "New functions for representing IEC 62305 standard lightning currents". In 2010 30th International Conference on Lightning Protection (ICLP). IEEE, 2010. http://dx.doi.org/10.1109/iclp.2010.7845806.

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"High Alumina Cement-Silica Fume Mixtures in the Presence of Superplasticizers". In SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete. American Concrete Institute, 1997. http://dx.doi.org/10.14359/6205.

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Rousseau, Alain, e Alexander Kern. "How to deal with environmental risk in IEC 62305-2". In 2014 International Conference on Lightning Protection (ICLP). IEEE, 2014. http://dx.doi.org/10.1109/iclp.2014.6973180.

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Stefanescu, Silviu, e Aurel Botezan. "Overview of the protection lightning standards suite EN/IEC 62305". In 2016 International Conference and Exposition on Electrical and Power Engineering (EPE). IEEE, 2016. http://dx.doi.org/10.1109/icepe.2016.7781391.

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Rousseau, Alain, Celine Sainte-Rose-Fanchine e Mitchell Guthrie. "Application of environmental risk according to IEC 62305-2 Edition 2". In 2015 International Symposium on Lightning Protection (XIII SIPDA). IEEE, 2015. http://dx.doi.org/10.1109/sipda.2015.7339327.

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Liu, Wenjun, e Mehdi Asheghi. "Thermal Conductivity of Ultra Thin Single Crystal Silicon Layers: Part I — Experimental Measurements at Room and Cryogenic Temperatures". In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62105.

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Self-heating in deep submicron transistors (e.g., Silicon-on-insulator and strained-Si) and thermal engineering of many nanoscale devices such as nanocalorimeters and high-density thermomechanical data storage are strongly influenced by thermal conduction in ultra-thin silicon layers. The lateral thermal conductivity of single-crystal silicon layers of thicknesses 20 and 100 nm at temperatures between 30 and 300 K was measured using Joule heating and electrical-resistance thermometry in suspended microfabricated structures. In general, a large reduction in thermal conductivity resulting from phonon-boundary scattering, particularly at low temperatures, is observed. Thermal conductivity of the 20 nm thick silicon layer at room temperature is nearly 22 W m−1K−1, compared to the bulk value, 148 W m−1K−1. The predictions of the classical thermal conductivity theory that accounts for the reduced phonon mean free paths based on a solution of the Boltzmann transport equation along a layer agrees well with the experimental results.

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Lee, Y. C. E., E. H. K. Fung, J. Q. Zou e H. W. J. Lee. "A Computational Optimal Control Approach to the Design of a Flexible Rotating Beam With Active Constrained Layer Damping". In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62205.

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In this paper, a computational approach is adopted to solve the optimal control and optimal parameter selection problems of a rotating flexible beam fully covered with active constrained layer damping (ACLD) treatment. The beam rotates in a vertical plane under the gravitational effect with variable angular velocity and carries an end mass. Tangent coordinate system and the moving coordinate system are used in the system modeling. Due to the highly nonlinear and coupled characteristics of the system, a relative description method is used to represent the motion of the beam and the motion equations are set up by using relative motion variables. Finite element shape functions of a cantilever beam [1] are used as the displacement shape functions in this study. Lagrangian formulation and Raleigh-Ritz approach [2] are employed to derive the governing equations of motion of the nonlinear time-varying system. The problem is posed as a continuous-time optimal control problem. The control function parameters are the control gains. The two system parameters are the thickness of the constraining layer and the viscoelastic material layer. The software package MISER3.2, which is based on the Control Parametrization and the Control Parametrization Enhancing Transform (CPET) techniques is used to solve the combined problems. The optimal solution takes the end deflection, control voltage and the total weight into account. Results show that substantial improvements are obtained with ACLD as compared to the passive constrained layer damping (PCLD) treatment.

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Hamada, Hiroyuki, Asami Nakai, Kazuya Eto e Kenichi Sugimoto. "Mechanical Properties of Matrix Hybrid Thick-Composites". In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62305.

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For the purpose of more safety boats, the large thickness of outer plates is required to increase flexural stiffness, strength and impact properties. Some problems in mechanical properties are generated by increasing in thickness because the effect of interlaminar shearing of Thick-composites on whole mechanical properties is greater than that of thin-composites. We have investigated the matrix hybrid composite with two kinds of unsaturated polyester, one was hard type resin with low toughness and the other was flexible type resin with low modulus and high toughness. In this study, matrix hybrid composite was focused and applied to Thick-composites. First, the flexural properties were investigated and the micro fracture progress was precisely observed with in-situ observation using replica method. Then, impact properties of the Thick-composites were examined and the availability of matrix hybrid composite was investigated. It was concluded that the matrix hybrid composite achieved high performance in both static and impact load.

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Mesquita, Maximilian S., e Marcelo J. S. de Lemos. "Macroscopic Modeling of Turbulent Mass Transport in Heterogeneous Porous Media". In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62405.

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In this work, results for a macroscopic mass transport model are presented for a parallel plate channel filled with a fluid saturated heterogeneous porous medium. The numerical methodology herein employed is based on the control volume approach. Turbulence is assumed to exist within the fluid phase. High and low Reynolds k-e models were used to model such non-linear effects. The flow equations at the pore-scale were numerically solved using the SIMPLE method applied to a non-orthogonal boundary-fitted coordinate system. Integrated mass fraction results were compiled leading to correlations for the mass dispersion coefficients in the x and y directions. Application of the macroscopic model using the proposed correlations showed the role of dispersion mechanism in the overall transport in porous media.

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