Relevant bibliographies by topics / Theory of the critical distance

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Academic literature on the topic 'Theory of the critical distance'

Author: Grafiati
Published: 21 February 2023

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Journal articles on the topic "Theory of the critical distance"

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O'Brien, John. "Critical Distance." Paragraph 29, no. 1 (March 2006): 108–19. http://dx.doi.org/10.3366/prg.2006.0007.

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Hattori, Toshio, and Minoru Yamashita. "OS14-3-3 Fretting Fatigue Life Estimations Based on Critical Distance Theory." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS14–3–3—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os14-3-3-.

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AKAMA, Makoto, Hiroyuki MATSUDA, Hisayo DOI, and Masahiro TSUJIE. "F405 Fatigue crack initiation life prediction of rails using theory of critical distance and critical plane approach." Proceedings of The Computational Mechanics Conference 2011.24 (2011): _F—54_—_F—57_. http://dx.doi.org/10.1299/jsmecmd.2011.24._f-54_.

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Hattori, Toshio, Muhammad Amiruddin Bin Ab Wahab, and Minoru Yamashita. "Low Cycle Fatigue Estimation Based on the Critical Distance Stress Theory." Advanced Materials Research 891-892 (March 2014): 1773–78. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.1773.

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Generally the critical distance stress theory was applied for the fatigue limit estimation of general structures using fatigue limit of smooth specimen (σw0), and threshold stress intensity factor range (Kth). In this paper we extended this method for the estimation of low cycle fatigue life too. In this method we define the critical distance (rc) on static strength conditions, which is calculated using ultimate tensile strength (σB) and fracture toughness (KIC), in addition to the critical distance on fatigue limit condition (rc). Then the critical distances of any low cycle fatigue conditions can be calculated by interpolation of critical distance on fatigue limit (rc) with critical distance on static strength (rc). By unifying these low cycle fatigue life estimation method with high cycle fatigue limit estimation method we can estimate the full range fatigue life easily. And to confirm the availability of this estimation method we perform the fatigue test for any stress concentration specimens.s
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Wahab, Muhammad Amiruddin Bin Ab, Niu Jie, Toshio Hattori, and Minoru Yamashita. "Fatigue Strength and Life Estimation Methods Using Critical Distance Stress Theory." Advanced Materials Research 694-697 (May 2013): 853–63. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.853.

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Generallythe critical distance stress theory was applied for the fatigue limitestimation of general structures. In thismethod, it needs only two parameters, fatiguelimit of smooth specimen (σw0), and threshold stress intensityfactor range (∆Kth). In this paper we extended this method for theestimation of low cycle fatigue lifetoo. In this improvement wedefine the critical distance (rc’) on static strength conditions,which is calculated using ultimate tensile strength (σB) andfracture toughness (KIC), in addition to the critical distance onfatigue limit condition (rc). Then the critical distances of any lowcycle fatigue conditions can be calculated by interpolation of criticaldistance on fatigue limit (rc)with critical distance on staticstrength (rc’). By unifying these low cycle fatigue life estimationmethod with high cycle fatigue limit estimation method we can estimate the fullrange fatigue life easily. And to confirm the availabilityof this estimation method we perform the fatigue test for circlehole specimens, sharp V notch specimens andfretting fatigue specimens.
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Daud, Ruslizam, Ahmad Kamal Ariffin, Shahrum Abdullah, and Al Emran Ismail. "Fatigue Failure Analysis Using the Theory of Critical Distance." Key Engineering Materials 462-463 (January 2011): 663–67. http://dx.doi.org/10.4028/www.scientific.net/kem.462-463.663.

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This paper explores the initial potential of theory of critical distance (TCD) which offers essential fatigue failure prediction in engineering components. The intention is to find the most appropriate TCD approach for a case of multiple stress concentration features in future research. The TCD is based on critical distance from notch root and represents the extension of linear elastic fracture mechanics (LEFM) principles. The approach is allowing possibilities for fatigue limit prediction based on localized stress concentration, which are characterized by high stress gradients. Using the finite element analysis (FEA) results and some data from literature, TCD applications is illustrated by a case study on engineering components in different geometrical notch radius. Further applications of TCD to various kinds of engineering problems are discussed.
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ARAKI, Daiya, Hiroki SANO, Kazuki MASUDA, and Toshio HATTORI. "Fretting Fatigue Strength Improvement Estimation Using Critical Distance Stress Theory." Proceedings of Mechanical Engineering Congress, Japan 2016 (2016): J0470101. http://dx.doi.org/10.1299/jsmemecj.2016.j0470101.

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Muhammad, Amiruddin, Toshio HATTORI, JIE Niu, and Minoru YAMASHITA. "OS1707 Fatigue Life Estimation Based on the Critical Distance Theory." Proceedings of the Materials and Mechanics Conference 2013 (2013): _OS1707–1_—_OS1707–3_. http://dx.doi.org/10.1299/jsmemm.2013._os1707-1_.

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Diehl, H. W. "The Theory of Boundary Critical Phenomena." International Journal of Modern Physics B 11, no. 30 (December 10, 1997): 3503–23. http://dx.doi.org/10.1142/s0217979297001751.

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An introduction into the theory of boundary critical phenomena and the application of the field-theoretical renormalization group method to these is given. The emphasis is on a discussion of surface critical behavior at bulk critical points of magnets, binary alloys, and fluids. Yet a multitude of related phenomena are mentioned. The most important distinct surface universality classes that may occur for a given universality class of bulk critical behavior are described, and the respective boundary conditions of the associated field theories are discussed. The short-distance singularities of the order-parameter profile in the diverse asymptotic regimes are surveyed.
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Taylor, David. "Microstructural Parameters in the Theory of Critical Distances." Materials Science Forum 567-568 (December 2007): 23–28. http://dx.doi.org/10.4028/www.scientific.net/msf.567-568.23.

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The work described below investigates, for the first time, the link between microstructural parameters such as grain size and the length constant L which is known as the critical distance. L is frequently used in the prediction of failure processes such as brittle fracture and fatigue, initiated at stress concentration features such as notches. Values of L were calculated using data from the literature on the effect of short cracks and notches in steels and ceramics. In some cases, simple relationships could be established between L and the grain size, or other microstructural features. Sometimes L was found to be much larger than anything in the microstructure and appeared to be related to the size of the damage zone at failure.
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Dissertations / Theses on the topic "Theory of the critical distance"

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Tilak, Shantanu Amod. "Alternative lifeworlds on the Internet: Habermas and democratic distance education." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587177594821112.

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Gorouhi, Hadi. "Novel fatigue analysis of old metallic bridges through the theory of critical distances (TCD)." Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/845859/.

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Majority of the railway bridges built in the UK and around the world before the middle of 20th century are of riveted type made of wrought iron or old mild steel. Many of these bridges are approaching their useful design life. Despite their old age, many are still in operation. In-service fatigue cracking and failure in the riveted double-angle connections in such bridges, especially in the rivets and outstanding leg of the angles, had been reported in the past. These connections are one of the most fatigue-prone details found in riveted railway bridges. Fatigue assessment of riveted details is generally based on a global life assessment, such as the S-N approach. The S-N approach involves the challenge of selecting an appropriate detail classification on an S-N basis as well as defining a nominal stress, free from stress raiser effects. By contrast, local stress methods, such as the Theory of Critical Distances (TCD), which directly considers the effect of stress raisers and loading conditions through finite element analysis, may provide a more favourable option for fatigue evaluation since it avoids the need for S-N classification and nominal stress calculation. In this thesis, the fatigue life prediction capability of the TCD and the S-N methods when applied to riveted bridge details was investigated through finite element analysis of simple and complex riveted details focusing on stringer-to-floor-beam connections. The fatigue life predictions of both the TCD and the traditional S-N methods were compared with the experimental data. Thus, a database of static and fatigue tests available in the literature on structural wrought iron and mild steel riveted details and connections was created. The choice of the suitable modelling techniques for the finite element analysis of the riveted details was verified using a benchmark study on a riveted single lap joint. The critical length vs. number of cycles to failure relationship, L vs. Nf, necessary for fatigue analysis based on the TCD was calibrated for structural wrought-iron material obtained from a real bridge. Fatigue assessment of the investigated riveted details was performed based on both the TCD and the S-N methods to quantify the differences. The results of this study showed that the TCD was successful in predicting fatigue life with the predictions falling within the constant amplitude scatter bands of the experimental data. In the single lap joint, the TCD method accurately estimated the average rivet clamping force values developed in the rivets of the specimens experimentally investigated. In the butt joints, the results of the TCD method was found to conformed well with the experimental research in the literature by predicting higher rivet clamping forces in the specimens with longer grip length. The novel formalisations of the TCD effectively predicted the fatigue life of full-scale riveted built-up girders with the results in the medium- and high-cycle always falling inside the CA scatter bands of the experimental data. The accuracy of the TCD method in estimating the rivet clamping forces present in the rivets of the investigated girders was found to be very high. The TCD was highly accurate when used to estimate the fatigue life of different components of the stringer-to-floor-beam connection subjected to four-point bending with the predictions falling in the scatter of the available experimental data. The hotspot locations identified by the TCD method were consistent with the results of the experimental study. By contrast, the predictions of the S-N method were very nonconservative in the case of the stringer-to-floor-beam connections (up to a factor of 2900). In general, the S-N method predictions were found to be sensitive to the choice of the detail classification. In the case of the stringer-to-floor-beam connection, Modified Class B resulted in the most nonconservative results (up to a factor of 10) when compared with the results of the other S-N classifications. The findings of this thesis may provide the bridge owners and authorities with a safe and effective alternative method in determining the remaining fatigue life of such bridge details.
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Louks, Richard. "Developing the 'Theory of Critical Distances' for practical integrity assessment of real-life structural components." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/14352/.

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This PhD thesis details the research conducted to answer three questions in the field of fracture and fatigue engineering. The opening chapters provide fracture and fatigue background theory as well as a more comprehensive review of the Theory of Critical Distances (TCD), a theory proven to be successful in the assessment of components containing stress concentration features. Chapter 4 details an engineering approach based on the TCD for the static assessment of engineering components containing stress concentrators made of brittle, quasi-brittle and ductile materials; and loaded by any combination of static forces. To validate the method, 1744 experimental data was taken from technical literature is provided in Annex A. Each data was modelled using FE software, the extracted stress data was then post-processed using this reformulation of the TCD. The results obtained were compared to the commonly used Hot-Spot Stress-Method, across the same set of data there was an order of magnitude improvement in accuracy, the TCD Point Method giving an average error less than 30% whilst the HSSM gave an average error greater than 300%. Chapter 5 is concerned with the use of the linear-elastic TCD to assess notched metallic components in the high-cycle fatigue regime at elevated temperatures. Full details of two experimental programmes are provided, notched samples of a low carbon steel C45 and an aluminium alloy A319 T7 was tested, the results are provided in Annex C. Additional experimental data was taken from technical literature to further validate the method. The results showed that the approach was highly accurate with errors falling within ±20%. The 6th Chapter gives account of a study into the combined use of the TCD and the Modified Wöhler Curve Method (MWCM) to accurately and efficiently assess metal engineering components IV containing complex 3D stress raisers experiencing complex load histories that resulted in fatigue failures in the medium- and high-cycle fatigue regime. The method is based on critical plane theory which assumes that fatigue cracks initiate on the material plane experiencing the maximum shear stress amplitude. The method was proven to be successful independent of the stress raiser geometry and the complexity of the load history, typically returning errors of ±20%. Chapters 4-6 each have their individual conclusions and suggestions for further work, chapter 7 gives a summary of the conclusions and chapter 8 provides some suggestions for further work.
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Leidermark, Daniel. "Crystal plasticity and crack initiation in a single-crystal nickel-base superalloy : Modelling, evaluation and appliations." Doctoral thesis, Linköpings universitet, Hållfasthetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-72093.

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In this dissertation the work done in the projects KME-410/502 will be presented.The overall objective in these projects is to evaluate and develop tools for designingagainst fatigue in single-crystal nickel-base superalloys in gas turbines. Experimentshave been done on single-crystal nickel-base superalloy specimens in order toinvestigate the mechanical and fatigue behaviour of the material. The constitutivebehaviour has been modelled and veried by FE-simulations of the experiments.Furthermore, the microstructural degradation during long-time ageing has been investigatedwith respect to the material's yield limit. The eect has been includedin the constitutive model by lowering the resulting yield limit. Moreover, the fatiguecrack initiation of a component has been analysed and modelled by using acritical plane approach in combination with a critical distance method. Finally, asan application, the derived single-crystal model was applied to all the individualgrains in a coarse grained specimen to predict the dispersion in fatigue crack initiationlife depending on random grain distributions. This thesis is divided into three parts. In the rst part the theoretical framework,based upon continuum mechanics, crystal plasticity, the critical plane approachand the critical distance method, is derived. This framework is then used in thesecond part, which consists of six included papers. Finally, in the third part, detailsof the used numerical procedures are presented.
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Yin, Taixiang. "On the use of the Theory of Critical Distances to design notched metallic components against dynamic loading." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/16464/.

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The Theory of Critical Distances (TCD) is a well-known design method allowing the strength of notched/crack components to be estimated accurately by directly post-processing the entire linear elastic stress fields damaging the material in the vicinity of the stress raisers being designed. By taking full advantage of the TCD’s unique features, in this thesis, the TCD is reformulated to make it suitable for predicting the strength of notched metallic materials subjected to dynamic loading by post-processing both linear elastic and elastoplastic stress distributions. The accuracy and reliability of the proposed reformulation of the linear elastic TCD were checked against a number of experimental results generated by testing, under different loading/strain/displacement rates, notched cylindrical samples of aluminium alloy 6063-T5, titanium alloy Ti–6Al–4V, aluminium alloy AlMg6, and an AlMn alloy. To further validate the proposed design method also different data sets taken from the literature were considered. Such an extensive validation exercise allowed us to prove that the proposed reformulation of the TCD is successful in predicting the dynamic strength of notched metallic materials falling within an error interval of ±20%. Such a high level of accuracy is certainly remarkable, especially in light of the fact that it was reached without the need for explicitly modelling the stress vs. strain dynamic behaviour of the investigated ductile metals. Additionally, the FEM with Simplified-Johnson Cook elastoplastic material model was used to predict the dynamic strength of notched metallic material falling within an error interval of ±20%. Moreover, the elastoplastic TCD was also provided to be capable of predicting the dynamic strength of notched metallic materials falling within an error interval of ±6%.
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Bagni, Cristian. "Formalisation of a novel finite element design method based on the combined use of gradient elasticity and the Theory of Critical Distances." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/17118/.

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The present research work is dedicated to the development, implementation and validation of a unified finite element methodology based on the combination of gradient elasticity and the Theory of Critical Distances, for the static and high-cycle fatigue assessment of notched engineering components. The proposed methodology, developed for plane, axisymmetric and three-dimensional problems, takes full advantage of both the TCD's accuracy in estimating static and high-cycle fatigue strength of notched components and of the computational efficiency of gradient elasticity in determining non-local stress fields whose distribution fully depends on the value of the adopted length scale parameter. In particular, the developed methodology, due to the ability of gradient elasticity to smooth stress fields in the vicinity of notch tips, has the great advantage of allowing accurate and reliable static and fatigue assessments of notched components by directly considering the relevant gradient-enriched stresses at the hot-spot on the surface of the component, in contrast to existing conventional approaches that require the knowledge of the failure location into the material a priori. This advantage, together with the fact that the proposed methodology can be easily implemented in commercial finite element software, makes the developed methodology a powerful and easy-to-use tool for the static and fatigue design/assessment of notched components. The developed methodology is accompanied by an accurate investigation of the best integration rules to be used as well as a comprehensive convergence study both in absence and presence of cracks, leading to a practical guideline on optimum element size. The proposed gradient-enriched methodology has been validated against a large number of problems involving notched components subject to both static and fatigue loading, covering a wide range of materials, geometries and loading conditions, clearly showing its accuracy and versatility. The developed gradient-enriched methodology has also been extended to the study of the dynamic behaviour of visco-elastic materials subject to vibration.
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Birochi, Renê. "Uma abordagem crítica para a educação a distância orientada para as microfinanças." reponame:Repositório Institucional do FGV, 2011. http://hdl.handle.net/10438/8189.

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As investigações sobre as práticas educacionais a distância e os respectivos usos de mídias para esse fim remontam aos estudos por correspondência do século XIX. A educação a distância (EAD), mediada pelas tecnologias de informação e comunicação (TICs), é um fenômeno recente, característico da sociedade pós-industrial, que utiliza grande diversidade de recursos, processos e meios para promover a educação. Historicamente, a área de EAD apresenta escassez de estudos teóricos sobre os fundamentos de suas práticas. A sua literatura também revela ausência, quase completa, de abordagens baseadas nas tradições do pensamento crítico, como, por exemplo, a teoria da estruturação (GIDDENS, 1984) ou a pedagogia crítica (FREIRE, 1987). Tendo isso em vista, procurou-se realizar uma revisão dessas abordagens orientando-as à EAD. Essa revisão teve como objetivo contribuir com os debates sobre os fundamentos teóricos da EAD, iniciados em 1960, visando ampliar os limites de suas práticas – já que atualmente, ainda predominam mecanismos típicos da sociedade industrial, como por exemplo, a replicação em massa de conteúdos educacionais. Para atender a esse objetivo, este trabalho de tese realizou um exame das principais teorias da EAD e se concentrou em encontrar uma fundação teórica comum, expressa por alguns conceitos essenciais. Esses conceitos que emergiram das análises foram re-interpretados por meio da influência das tradições do pensamento crítico, provenientes dos domínios da filosofia, sociologia, educação e comunicação. Esse processo parcimonioso de revisão conceitual da EAD foi enriquecido pela inclusão de dois eixos adicionais de investigação: a educação de adultos e a educação financeira. Ao final dessa revisão foi constituído um quadro teórico que funcionou como um núcleo central deste estudo. Esse núcleo sofreu influências e alterações substantivas de informações provenientes do campo empírico de investigação. O campo empírico representou a oportunidade de investigar o objeto principal desta tese, orientado para compreender como um programa de EAD deve ser constituído para atuar como um instrumento de emancipação socioeconômica de microempresários pobres, usuários de serviços microfinanceiros. Para atender esse objetivo, foi realizado um estudo de caso instrumental utilizando-se procedimentos metodológicos de pesquisa qualitativa. O município de Autazes, no Estado do Amazonas, foi escolhido para ser estudado, pois sofreu um expressivo crescimento socioeconômico recente, ocorrido após a instalação de pontos de acesso a serviços financeiros, com uso de mediação tecnológica. Esse crescimento resultou em desenvolvimento econômico, associado ao agravamento de tensões sociais, dentre as quais, o endividamento financeiro da população. O município integra, também, uma rede pública de ensino na modalidade a distância, provida pelo governo do Estado, que tem sido objeto de destacados prêmios internacionais. Como resultado deste trabalho de tese, foi possível consolidar as contribuições teóricas e empíricas em um quadro teórico final, que tem como objetivo orientar a elaboração de novas teorias de EAD críticas. Da mesma forma, foi proposto um modelo inédito para a EAD crítica, voltado para a prática dessa modalidade de educação.
Investigations on distance education practices, and the respective uses of media for this application, hark back to correspondence courses of the 19th Century. Distance education (DE) mediated by information and communication technologies (ICTs) is a recent development characterized by a post-industrial society which exploits a broad array of resources, processes and media to promote education. Historically, the DE domain has been the subject of scant theoretical studies investigating the framework underlying DE practices. The literature also reveals an almost total absence of approaches based on the traditions of critical thinking, such as the theory of structuration (GIDDENS, 1984) and critical pedagogy (FREIRE, 1987). Against this background, an analytical review of these approaches was carried out, relating them to DE. The aim of this review was to contribute to the discussion on the theoretical foundations of DE, first established in 1960, in a bid to broaden the scope of DE practices. Indeed, mechanisms typical of an industrial society still predominate in DE, such as mass replication of educational content. In order to address this issue, an examination of the core theories of DE was conducted seeking to identify a common theoretical framework, underpinned by a few seminal concepts. The concepts which emerged in the analysis were reinterpreted in the context of critical traditions, drawn from the disciplines of philosophy, sociology, education and communication. This parsimonious process of conceptual review of DE was enriched by the inclusion of two additional lines of investigation: adult education and financial education. The review process culminated in the devising of a theoretical framework which served as the central core of this investigation. The framework underwent major influences and substantive changes, stemming from the empirical field of investigation. The empirical field represented an opportunity to investigate the main focus of this thesis, namely, to elucidate how DE programs should be structured in order to act as instruments of socioeconomic emancipation of business owners that are, in turn, users of microfinancial services. In order to address this theme, an instrumental case study was performed based on qualitative research methods and procedures. The municipality of Autazes in the state of Amazonas was elected as the target of this study, given its recent significant socioeconomic growth following installation of points of access to financial services enabled by ICTs. This growth led to economic development together with worsened social tensions, including increased indebtedness of the population. The municipality also boasts a distancebased public education network provided by the government of the state of Amazonas, an initiative which has garnered several recognized international awards. The theoretical and empirical contributions of this study have been consolidated into a final theoretical framework which may serve as a basis for devising new critical theories in DE. Finally, a new model of critical DE was proposed, aimed specifically at the practice of this mode of education.
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Goodsett, Mandi. "Determining the Extent to Which Information Literacy Online Learning Objects Follow Best Practices for Teaching and Assessing Critical Thinking." Cleveland State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=csu1526048546211971.

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Damas, Helton Luiz Gonçalves. "Tecnologia educacional e possibilidades construtivistas a partir da percepção dos alunos sobre os processos de aprendizagem no curso superior a distância de tecnologia em gestão de turismo CEFET-RJ / CEDERJ." Universidade Federal de São Carlos, 2013. https://repositorio.ufscar.br/handle/ufscar/1106.

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This paper aims to analyze how students from Course of Technology in Tourism Management evaluates the operating platform moodle seeking to prove the relationship between education and technology in accordance with the Critical Theory of Technology from Feenberg. Andrew Feenberg is one of the pioneers of distance education to create a course based on this modality in the 1980s and since then studies the distance education with relation of social studies of science and technology and his research is based on technological constructivism. Thus, the state government of Rio de Janeiro in 2000 created the CEDERJ - Center for Distance Higher Education in Rio de Janeiro - a consortium of six public universities of Rio de Janeiro. Among the courses offered by CEDERJ, can highlight the Course of Technology in Tourism Management, administered by the Federal Center for Technological Education Celso Suckow da Fonseca (CEFET / RJ). Since it is the first half of the course students have difficulties in dealing with learning technologies, and relevant to assess the perceptions that they have on the learning processes and to analyze the possibilities of student participation in the building of moodle platform, molding according to the interests of all actors involved in the course - the governing, teachers and students. As methodology, the work is a case study based on qualitative and quantitative research, data obtained through a questionnaire on line targeted at students from the five centers of the course. After interpretation and data analysis it became clear what was the perception that students have about the learning processes of the course. As a result, we can verify that students have sense evaluative notes relevant to achieving satisfactory with respect to the learning process in which they are inserted and they can constitute social agents capable of modifying educational technology.
O presente trabalho tem o intuito de analisar como os alunos do Curso Superior de Tecnologia em Gestão de Turismo avaliam o funcionamento da plataforma moodle, buscando evidenciar a relação existente entre educação e tecnologia de acordo com a Teoria Crítica da Tecnologia de Feenberg. Andrew Feenberg é considerado um dos precursores da educação a distância (EAD) por criar um curso baseado nessa modalidade na década de 1980 e desde então estuda a EAD a luz dos estudos sociais da ciência e da tecnologia (ESCT), fundamentando suas pesquisas conforme os conceitos estabelecidos pelo construtivismo tecnológico. Assim, o governo do Estado do Rio de Janeiro criou no ano 2000 o CEDERJ Centro de Educação Superior a Distância do Rio de Janeiro um consórcio formado por seis universidades públicas do Rio de Janeiro. Dentre os cursos oferecidos pelo CEDERJ, pode-se destacar o Curso Superior de Tecnologia em Gestão de Turismo, administrado pelo Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET/RJ). Por se tratar do primeiro semestre do curso os alunos apresentam dificuldades em lidar com as tecnologias de ensino, sendo relevante avaliar as percepções que os mesmos possuem sobre os processos de aprendizagem e analisar as possibilidades de participação dos estudantes na construção da plataforma moodle, moldando-a conforme os interesses de todos os atores sociais envolvidos no curso corpo diretivo, docentes e discentes. Como metodologia, o trabalho consiste em um estudo de caso baseado na pesquisa qualiquantitativa, obtendo dados por meio da aplicação de um questionário on line dirigido aos alunos dos cinco polos do curso. Após a interpretação e análise dos dados foi possível evidenciar qual era a percepção que os alunos têm sobre os processos de aprendizagem do curso. Como resultado, pôde-se verificar que os estudantes possuem senso avaliativo satisfatório, conseguindo fazer apontamentos relevantes com relação ao processo de aprendizagem no qual se encontram inseridos e que eles podem se constituir em agentes sociais capazes de modificar a tecnologia educacional.
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Batista, Ana Carla Schiavinato. "A (não)diretividade pedagógica na educação a distância." Universidade Federal de São Carlos, 2013. https://repositorio.ufscar.br/handle/ufscar/2659.

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This search presents a subject that is on top of the currently education scenario, the Distance Education. This new education mode that comes as a promess to breaking barriers of timing and space, still have many things to say about their real consequences regarding education of the individual. Thus arises the importance of this research which aims investigating issues related to pedagogical directivity/non-directivity in UAB-UFSCar with a target of analysis the Philosophy of Education into the Pedagogy graduate. However it should be noted that the goal is not handle the data in order to make categorical statements, i.e, do not say if the pedagogical relations in UAB-UFSCar are directives or non-directives but trying think about such relations and how it occurs at the enviroment of learning to propose new thoughts. The main theoretical framework to be used will be the Critical Theory of Society that supported the analyzes and reflections made in the course of the four chapters of the dissertation.
A presente dissertação trata de um tema que está em pauta no cenário educativo atual, a Educação a Distância (EAD). Esta nova modalidade de ensino, que vem com a promessa de romper barreiras de tempo e espaço, ainda tem muito a nos dizer sobre suas reais consequências no que se refere à formação do indivíduo. Por isso se dá a importância deste trabalho, que objetivou investigar questões referentes a diretividade/não-diretividade pedagógica na UAB-UFSCar, tendo como objeto de análise a disciplina de Filosofia da Educação do curso de Licenciatura em Pedagogia. No entanto, vale salientar que o objetivo não foi tratar os dados com a finalidade de realizar afirmações categóricas, ou seja, não pretendemos dizer se as relações pedagógicas na UAB-UFSCar são ou não diretivas, mas sim buscamos pensar sobre tais relações e sobre como elas ocorrem no ambiente de aprendizagem, com o intuito de propor novas reflexões. O referencial teórico principal utilizado foi a teoria Crítica da Sociedade, que subsidiou as análises e reflexões feitas no decorrer dos quatro capítulos da dissertação.
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Books on the topic "Theory of the critical distance"

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The theory of critical distances: A new perspective in fracture mechanics. Amsterdam: Elsevier, 2007.

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Rasmussen, David, and James Swindal. Critical Theory. 1 Oliver's Yard, 55 City Road, London EC1Y 1SP United Kingdom: SAGE Publications Ltd, 2004. http://dx.doi.org/10.4135/9781446261293.

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How, Alan. Critical Theory. London: Macmillan Education UK, 2003. http://dx.doi.org/10.1007/978-0-230-80237-7.

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Hoy, David Couzens. Critical Theory. Oxford, UK: Blackwell Publishing, 1994.

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Brouwer, A. E. Distance-regular graphs. Berlin: Springer-Verlag, 1989.

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Buckley, Fred. Distance in graphs. Redwood City, Calif: Addison-Wesley Pub. Co., 1990.

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Frank, Harary, ed. Distance in graphs. Redwood City, Calif: Addison-Wesley Pub. Co, 1989.

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1942-, Clifford John, and Schilb John 1952-, eds. Writing theory and critical theory. New York: Modern Language Association of America, 1994.

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Latimer, Dan. Contemporary critical theory. San Diego: Harcourt, Brace, Jovanovich, 1989.

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Stuart, Sim. Introducing critical theory. Royston [England]: Icon, 2004.

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Book chapters on the topic "Theory of the critical distance"

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Taylor, David. "Microstructural Parameters in the Theory of Critical Distances." In Materials Science Forum, 23–28. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-469-3.23.

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Yamashita, Yoichi, Masaharu Shinozaki, Hiroshi Kuroki, and Yusuke Ueda. "Fatigue Life Prediction of Small Notched Ti-6Al-4V Based on The Theory of Critical Distance." In ICAF 2009, Bridging the Gap between Theory and Operational Practice, 685–706. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2746-7_39.

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Paul, Ross. "Introduction to Organization, Leadership, and Change in ODDE: The Critical Importance of Institutional Leadership." In Handbook of Open, Distance and Digital Education, 1–12. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0351-9_86-1.

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AbstractThis chapter provides an overview of the 11 other chapters in Section III of the Handbook which address issues of Organisation, Leadership and Change. It pays particular attention to the impact of the Covid-19 pandemic on perceptions of ODDE, noting both the benefits of the greatly enhanced international interest in on-line learning and the negative perceptions associated with its misuse during the sudden demand for emergency remote teaching in conventional educational institutions. It envisions a blurring of distinctions between conventional and ODDE institutions with consequent opportunities for the latter. While these issues are pursued through various perspectives in the Section III chapters, there is a unifying theme of the critical importance of institutional leadership throughout and a concomitant focus on how leadership has to change in a rapidly evolving international context. The chapter envisions a bright future for ODDE but only if critical issues of institutional leadership are addressed and if those leading conventional institutions are made aware of the research and experience emanating from the established ODDE sector.
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Evans, Terry, and Viktor Jakupec. "Classic Theories of Distance Education." In Handbook of Open, Distance and Digital Education, 1–19. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0351-9_7-1.

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AbstractThis chapter explores the influence of three of distance education’s classic theorists—Otto Peters, Börje Holmberg, and Michael Moore—on its subsequent conceptualization and practice. The classic theorists’ understanding of theory and theorizing is discussed critically in the context of the articulation of each’s particular theory. This is then contextualized in terms of the history of the development of distance education and its institutions, from Pitman’s correspondence courses on shorthand, through correspondence schooling and higher education external studies, to the rise of the United Kingdom Open University in the 1960s. The latter’s subsequent powerful influence on the theory and practice of open and distance education internationally is described as stimulating a fertile context for the classic theorists’ endeavors. Finally, consideration is given to more recent scholars’ interpretations and adaptations of the classic theories of distance education. This leads to a concluding reflection on the authors’ engagement with distance education theorizing and the prospects for the future of distance education’s theorizing and practice.
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Evans, Terry, and Viktor Jakupec. "Classic Theories of Distance Education." In Handbook of Open, Distance and Digital Education, 109–27. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-2080-6_7.

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AbstractThis chapter explores the influence of three of distance education’s classic theorists—Otto Peters, Börje Holmberg, and Michael Moore—on its subsequent conceptualization and practice. The classic theorists’ understanding of theory and theorizing is discussed critically in the context of the articulation of each’s particular theory. This is then contextualized in terms of the history of the development of distance education and its institutions, from Pitman’s correspondence courses on shorthand, through correspondence schooling and higher education external studies, to the rise of the United Kingdom Open University in the 1960s. The latter’s subsequent powerful influence on the theory and practice of open and distance education internationally is described as stimulating a fertile context for the classic theorists’ endeavors. Finally, consideration is given to more recent scholars’ interpretations and adaptations of the classic theories of distance education. This leads to a concluding reflection on the authors’ engagement with distance education theorizing and the prospects for the future of distance education’s theorizing and practice.
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Brown, Mark. "Leading in Changing Times." In Handbook of Open, Distance and Digital Education, 1–17. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0351-9_28-1.

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AbstractThis chapter reflects on the challenges and opportunities of leading educational change in today’s digitally connected world. It offers personal insights and critical reflections on learning leadership framed by a wide-angle, multifocal lens that helps zoom in and out to visualize preferred futures. Before outlining a collection of leadership touchstones and critical questions for guiding institutional transformation and then reporting their application in the practice of digital education, the chapter begins by illustrating how the new learning ecology is complex and entangled in competing images of the future. Efforts by educational leaders to build agile and sustainable transformative organizational cultures need to be guided by a clear sense of direction and anchored in a living institutional mission. The role of the National Institute for Digital Learning (NIDL) hosted at Dublin City University (DCU) in Ireland is central to this story, as harnessing the transformative potential of new digital technology is at the heart of its change agenda. After briefly introducing DCU, the chapter reports how the NIDL’s commitment to leadership development and active engagement in global networks are helping to reshape the higher education landscape with a critical digital edge. However, forging a future-focused mission based on multifocal criticality and transformative leadership is not something for the faint-hearted; it requires agency, relational capital, and strategic foresight to move from digital in part to digital at the heart of your organizational culture.
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Brown, Mark. "Leading in Changing Times." In Handbook of Open, Distance and Digital Education, 509–25. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-2080-6_28.

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AbstractThis chapter reflects on the challenges and opportunities of leading educational change in today’s digitally connected world. It offers personal insights and critical reflections on learning leadership framed by a wide-angle, multifocal lens that helps zoom in and out to visualize preferred futures. Before outlining a collection of leadership touchstones and critical questions for guiding institutional transformation and then reporting their application in the practice of digital education, the chapter begins by illustrating how the new learning ecology is complex and entangled in competing images of the future. Efforts by educational leaders to build agile and sustainable transformative organizational cultures need to be guided by a clear sense of direction and anchored in a living institutional mission. The role of the National Institute for Digital Learning (NIDL) hosted at Dublin City University (DCU) in Ireland is central to this story, as harnessing the transformative potential of new digital technology is at the heart of its change agenda. After briefly introducing DCU, the chapter reports how the NIDL’s commitment to leadership development and active engagement in global networks are helping to reshape the higher education landscape with a critical digital edge. However, forging a future-focused mission based on multifocal criticality and transformative leadership is not something for the faint-hearted; it requires agency, relational capital, and strategic foresight to move from digital in part to digital at the heart of your organizational culture.
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Paul, Ross. "Introduction to Organization, Leadership, and Change in ODDE." In Handbook of Open, Distance and Digital Education, 1–12. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0351-9_86-2.

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AbstractThis chapter provides an overview of the 11 other chapters in Section III of the Handbook which address issues of Organisation, Leadership and Change. It pays particular attention to the impact of the Covid-19 pandemic on perceptions of ODDE, noting both the benefits of the greatly enhanced international interest in on-line learning and the negative perceptions associated with its misuse during the sudden demand for emergency remote teaching in conventional educational institutions. It envisions a blurring of distinctions between conventional and ODDE institutions with consequent opportunities for the latter. While these issues are pursued through various perspectives in the Section III chapters, there is a unifying theme of the critical importance of institutional leadership throughout and a concomitant focus on how leadership has to change in a rapidly evolving international context. The chapter envisions a bright future for ODDE but only if critical issues of institutional leadership are addressed and if those leading conventional institutions are made aware of the research and experience emanating from the established ODDE sector.
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Paul, Ross. "Introduction to Organization, Leadership, and Change in ODDE." In Handbook of Open, Distance and Digital Education, 463–74. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-2080-6_86.

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AbstractThis chapter provides an overview of the 11 other chapters in Section 4 of the handbook which address issues of Organisation, Leadership and Change. It pays particular attention to the impact of the Covid-19 pandemic on perceptions of ODDE, noting both the benefits of the greatly enhanced international interest in on-line learning and the negative perceptions associated with its misuse during the sudden demand for emergency remote teaching in conventional educational institutions. It envisions a blurring of distinctions between conventional and ODDE institutions with consequent opportunities for the latter. While these issues are pursued through various perspectives in the Section 4 chapters, there is a unifying theme of the critical importance of institutional leadership throughout and a concomitant focus on how leadership has to change in a rapidly evolving international context. The chapter envisions a bright future for ODDE but only if critical issues of institutional leadership are addressed and if those leading conventional institutions are made aware of the research and experience emanating from the established ODDE sector.
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Plekhov, Oleg A., Alena I. Vedernikova, and Anastasiia A. Kostina. "Theory of Critical Distances as a Method of Failure Prediction Under Dynamic Loading." In Advanced Structured Materials, 187–98. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-79325-8_16.

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Conference papers on the topic "Theory of the critical distance"

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D'yachkov, A., A. Voronina, A. Macula, T. Renz, and V. Rykov. "On critical relative distance of DNA codes for additive stem similarity." In 2010 IEEE International Symposium on Information Theory - ISIT. IEEE, 2010. http://dx.doi.org/10.1109/isit.2010.5513751.

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Nakahara, Tetsuya, Yusuke Ueda, and Hiroshi Nakamura. "Development of Life Prediction Method of Turbine Blade Using the Theory of Critical Distance." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68742.

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Gas turbine blades mounted dovetail root are subjected to high centrifugal loads and gas forces. This situation causes low cycle fatigue (LCF). Recently, rotating speed and temperature of turbine rotor become higher in order to improve engine performance. To achieve this, it is required to evaluate accurate turbine blade’s LCF life of the contact surface between the blade dovetail root and the disk. However, the estimated blade lives using the peak stress calculated by finite element analysis (FEA) are much shorter than actual life because the stress at contact surface is excessively high. As a result, the blades are designed conservative and the blade’s weight tends to be heavy. Therefore, a more accurate evaluation methodology needs to be established. This study investigates the method to estimate the fatigue strength of dovetail using the theory of critical distance. The theory assumes that fatigue failures would occur due to the representative stress within a specific distance from stress concentration point. Fatigue tests and FEA for the turbine blade dovetail were conducted respectively in this research. The tests were carried out using single crystal nickel-based turbine blades at 600 °C and the fracture lives of dovetail were obtained. FEA was conducted to obtain the stress distributions at dovetail contact surface under testing condition. In this study, the critical distances of the single crystal nickel based alloy were obtained from the notched bar fatigue tests and FEA. Using these results and the theory of critical distance, fatigue lives of dovetail were obtained more accurately.
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Chattopadhyay, Somnath. "S-N Curves in Pressure Vessel Steels Using Theory of Critical Distances." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61592.

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The S-N technology used in the ASME Code and similar design criteria includes both crack initiation and crack propagation phases of fatigue failure. Some of the pressure vessel construction codes have used the simplified fatigue initiation criterion based on stresses calculated at a distance of 0.05 mm from the surface crack. In this work such techniques have been assessed for pressure vessels in light of the theory of critical distances. This method has been used to generate S-N curves for typical materials such as medium carbon steels, nickel chrome steels and stainless steels. Separate techniques have been highlighted for obtaining the number of cycles to nucleate a crack from a free surface, and also the number of cycles to drive the nucleated surface crack to propagate to a length equal to the critical distance parameter related to the process zone. The two estimates on the number of cycles when combined constitute a reasonable estimate of the number of cycles to initiate a crack and form the basis of the S-N design curves. The method requires the material property information on elastic-plastic fracture toughness and short crack propagation characteristics including crack closure effects.
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Marcon, Lucas, Pablo Tonetti Anselmo, Vagner Nascimento, Alexandre Vieceli, and Leandro Corso. "Virtual Brake Spider Validation Method Based on Theory of Critical Distance and Experimental Bench Tests." In 15th SAE Brasil International Brake and Motion Control Colloquium & Engineering Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2022. http://dx.doi.org/10.4271/2021-36-0419.

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Dias, Jéssica Nayara, JORGE FERREIRA, and Letícia Silva. "Behavior of the distribution of life in notched components according to TCD (Theory of critical distance)." In 24th ABCM International Congress of Mechanical Engineering. ABCM, 2017. http://dx.doi.org/10.26678/abcm.cobem2017.cob17-1567.

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Barnett, Ralph L., Susanne A. Glowiak, and Peter J. Poczynok. "Stochastic Theory of Human Slipping." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32450.

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The conventional approach to human slipping is essentially deterministic; it states that no slipping will occur when the average friction coefficient is greater than some critical friction criterion. Under this condition, pedestrians will not slip when they encounter the average friction coefficient. On the other hand, to successfully negotiate a walk of n-steps they must not slip when they encounter the smallest of the n friction coefficients. Consequently, a new slip theory has been formulated as a problem in extreme value statistics. An elegant relationship is obtained among the probability of slipping, the critical friction criterion, the number of steps taken by the walker, and the central measure, scatter, and asymmetry of the distribution of friction coefficients. The new theory reveals the structure of human slipping in a startling way that introduces completely new concepts: the go/no go nature of classical slip predictions is replaced by a probability of slipping; low friction floor/footwear couples may lead to fewer slips than high friction ones; slipping can occur in any case where conventional theory predicts “no slip”; and the number of slips depends on the distance traveled by a pedestrian. Finally, this paper develops the idea that the slipperiness of a real floor must be evaluated for a duty-cycle. Duty-cycles can be represented as frequency histograms when a floor is homogeneous and isotropic.
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González, P., S. Cicero, B. Arroyo, and J. A. Álvarez. "Analysis of Environmentally Assisted Cracking in S420 Steel by Using the Theory of Critical Distances." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93145.

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Abstract The behavior of S420 steel under cathodic polarization in low pH aqueous environment is analyzed following the assumptions of the Theory of Critical Distances. This methodology has been successfully applied in fracture and fatigue analysis, but it has not been employed yet under stress corrosion cracking or hydrogen embrittlement conditions. This work focuses on the problem of environmentally assisted cracking by using the Point Method and the Line Method, both of them belonging to the Theory of Critical Distances. Fracture mechanic tests were carried out, using a slow strain rate machine, at two different solicitation rates (6·10−8 m/s and 6·10−9 m/s). The study is based on an experimental program composed of C(T) specimens with notch radii varying from 0 mm up to 2 mm. Cathodic polarization with a 5 mA/cm2 current has been employed and the aqueous aggressive environment was made using the Pressouyre’s method. The study has been completed with finite elements simulation analysis. The results reveal that the Theory of Critical Distances provides accurate predictions of the environmentally assisted cracking behavior of S420 steel in notched conditions.
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Terekhina, Alena, Anastasiya Kostina, and Oleg Plekhov. "Application of the theory of critical distances for the estimation of fracture under dynamic loading." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2017 (AMHS’17). Author(s), 2017. http://dx.doi.org/10.1063/1.5013899.

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Krasowski, D., T. Kisielewicz, B. Kuca, Z. Flisowski, F. Fiamingo, and C. Mazzetti. "On critical distance between an spd and protected appliance with respect to their voltage coordination." In 2010 30th International Conference on Lightning Protection (ICLP). IEEE, 2010. http://dx.doi.org/10.1109/iclp.2010.7845969.

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Taylor, David, and Saeid Kasiri. "A Critical Distance Analysis of the Effect of Crack Length on Toughness and Fatigue in Compact Bone." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192304.

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The plane strain fracture toughness, KIC, has a constant value for long cracks, but when specimens containing short cracks are tested it is often found that the measured toughness is less than the long-crack value, and tends to decrease with decreasing crack length. A similar effect occurs when measuring the cyclic stress intensity range, ΔK, corresponding to a given rate of crack growth da/dN. Some experimental data are available in the published literature to show that cortical bone displays these short-crack effects for crack lengths of the order of millimeters or less. The hypothesis of the present work was that these effects can be predicted using an approach known as the Theory of Critical Distances. This is the first time that this approach has been used to predict short crack effects in bone.
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Reports on the topic "Theory of the critical distance"

1

Savchenko, Sergii V., Svitlana O. Shekhavtsova, and Vladimir I. Zaselskiy. The development of students' critical thinking in the context of information security. [б. в.], November 2020. http://dx.doi.org/10.31812/123456789/4420.

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The problem of students’ critical thinking development in the context of information security becomes important in international and national educational policies as a means of fostering active citizenship and in turn sustainable development. The purpose of the given research is to introduce theoretical substantiation and experimental approbation of students’ critical thinking development in the context of information security. The skills of critical thinking help students to cope with the bulk of information they daily receive. However, there is still no conventional methodology for critical thinking development in university students. In our study we suggest possible ways to develop critical thinking in university students via introducing some special courses into the curriculum, and consider the results of the experimental study conducted on the basis of two Ukrainian leading universities. In order to improve the students’ skills of critical thinking the author suggested implementing the special course “The specifics of students’ critical thinking in the context of information security”, and an optional distance course on optimization of students’ critical thinking on the background of information and communication technologies. After the implementation of the suggested courses the indicators of students’ critical thinking development showed positive changes and proved the efficiency of the special courses as well as the general hypothesis of the study.
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Johnson, Eric M., Robert Urquhart, and Maggie O'Neil. The Importance of Geospatial Data to Labor Market Information. RTI Press, June 2018. http://dx.doi.org/10.3768/rtipress.2018.pb.0017.1806.

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School-to-work transition data are an important component of labor market information systems (LMIS). Policy makers, researchers, and education providers benefit from knowing how long it takes work-seekers to find employment, how and where they search for employment, the quality of employment obtained, and how steady it is over time. In less-developed countries, these data are poorly collected, or not collected at all, a situation the International Labour Organization and other donors have attempted to change. However, LMIS reform efforts typically miss a critical part of the picture—the geospatial aspects of these transitions. Few LMIS systems fully consider or integrate geospatial school-to-work transition information, ignoring data critical to understanding and supporting successful and sustainable employment: employer locations; transportation infrastructure; commute time, distance, and cost; location of employment services; and other geographic barriers to employment. We provide recently collected geospatial school-to-work transition data from South Africa and Kenya to demonstrate the importance of these data and their implications for labor market and urban development policy.
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Andrabi, Tahir, Benjamin Daniels, and Jishnu Das. Human Capital Accumulation and Disasters: Evidence from the Pakistan Earthquake of 2005. Research on Improving Systems of Education (RISE), May 2020. http://dx.doi.org/10.35489/bsg-risewp_2020/039.

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We trace the effects of a devastating earthquake that occurred in Northern Pakistan in 2005. Using a new dataset from a survey conducted four years after the earthquake, we first show that the distance of the household from the fault line was not correlated with pre-existing household characteristics, while it was strongly predictive of earthquake-related damage and mortality. Through emergency relief aid, households living close to the fault line reported receiving substantial cash compensation that amounted to as much as 150% of their annual household consumption expenditure. Four years after the earthquake, there were no differences in public infrastructure, household or adult outcomes between areas close to and far from the fault line. However, children in their critical first thousand days at the time of the earthquake accumulated large height deficits, with the youngest the most affected. Children aged 3 through 15 at the time of the earthquake did not suffer growth shortfalls, but scored significantly worse on academic tests if they lived close to the fault line. Finally, children whose mothers completed primary education were fully protected against the emergence of a test score gap. We estimate that if these deficits continue to adult life, the affected children could stand to lose 15% of their lifetime earnings. Even when disasters are heavily compensated, human capital accumulation can be critically interrupted, with greater losses for already disadvantaged populations.
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Rojas Scheffer, Raquel. http://mecila.net/wp-content/uploads/2020/11/WP-27-Rojas-Scheffer_Online.pdf. Maria Sibylla Merian International Centre for Advanced Studies in the Humanities and Social Sciences Conviviality-Inequality in Latin America, 2020. http://dx.doi.org/10.46877/rojasscheffer.2020.27.

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Households that hire domestic workers are a space of compulsive encounters where people of different origins and social class meet, experiencing physical proximity that makes the social distance that prevails between them even more noticeable. Drawing on current research and scholarship on paid domestic work in Latin America, this paper explores the different ways of analysing the encounters of women from highly unequal social positions in the narrowness of the private household, arguing that the combination of physical proximity and affective ties fosters the (re)production of social inequalities and asymmetries of power. But while it is within the convivial relations of these households that inequality becomes evident, it is also there where it can be negotiated, fought, or mitigated. Households that hire domestic workers are thus a privileged site for observing negotiations and disputes concerning social inequalities, and hence, a critical context to study the reciprocal constitution of conviviality and inequality.
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Díaz de Astarloa, Bernardo, Nanno Mulder, Sandra Corcuera-Santamaría, Winfried Weck, Lucas Barreiros, Rodrigo Contreras Huerta, and Alejandro Puente. Post Pandemic Covid-19 Economic Recovery: Enabling Latin America and the Caribbean to Better Harness E-commerce and Digital Trade. Edited by Marcee Gómez. Inter-American Development Bank, August 2021. http://dx.doi.org/10.18235/0003436.

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This report shows that Latin America and the Caribbean faces critical policy challenges going forward. It must accelerate the digital transformation to allow businesses and consumers to adapt to a new normal and leverage pandemic recovery to create stronger economies, and also tackle long-standing barriers to adopting digital technologies and bridging digital divides. These have impeded sustained and equitable economic growth even before the pandemic struck. This crisis should be a wake-up call for governments, the private sector, civil society, and international development partners to come together and take concerted actions to advance on consistent, long-term, and sustainable e-commerce strategies that are at the forefront of national and regional productive development agendas. Just as digital solutions allowed countries to overcome the increased role of distance within the context of the pandemic in shaping consumption and business, they should also be harnessed to increase regional economic integration beyond this emergency situation.
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Sablina, V. A. The distance learning course «Theory of Computational Processes and Structures». OFERNIO, February 2018. http://dx.doi.org/10.12731/ofernio.2018.23537.

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Prokaznikova, E. N. The distance learning course «The Mathematical Logic and Theory of Algorithms». OFERNIO, December 2018. http://dx.doi.org/10.12731/ofernio.2018.23531.

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Silverstein, Eva M. de Sitter Space in Non-Critical String Theory. Office of Scientific and Technical Information (OSTI), August 2002. http://dx.doi.org/10.2172/799932.

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Ilyin, M. E. The distance learning course «Theory of probability, mathematical statistics and random functions». OFERNIO, December 2018. http://dx.doi.org/10.12731/ofernio.2018.23529.

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Kishimoto, Y., T. Tajima, W. Horton, M. J. LeBrun, and J. Y. Kim. Theory of self-organized critical transport in tokamak plasmas. Office of Scientific and Technical Information (OSTI), July 1995. http://dx.doi.org/10.2172/100314.

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