Letteratura scientifica selezionata sul tema "Post-structural approach"
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Articoli di riviste sul tema "Post-structural approach"
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Flew, Antony, e Stephen J. Ball. "Education Reform: A Critical and Post-Structural Approach". British Journal of Educational Studies 43, n. 2 (giugno 1995): 221. http://dx.doi.org/10.2307/3121942.
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Alzaid, Eman, e Achraf El Allali. "PostSV: A Post–Processing Approach for Filtering Structural Variations". Bioinformatics and Biology Insights 14 (gennaio 2020): 117793221989295. http://dx.doi.org/10.1177/1177932219892957.
Testo completoAbstract (sommario):
Genomic structural variations are significant causes of genome diversity and complex diseases. With advances in sequencing technologies, many algorithms have been designed to identify structural differences using next-generation sequencing (NGS) data. Due to repetitions in the human genome and the short reads produced by NGS, the discovery of structural variants (SVs) by state-of-the-art SV callers is not always accurate. To improve performance, multiple SV callers are often used to detect variants. However, most SV callers suffer from high false-positive rates, which diminishes the overall performance, especially in low-coverage genomes. In this article, we propose a post-processing classification–based algorithm that can be used to filter structural variation predictions produced by SV callers. Novel features are defined from putative SV predictions using reads at the local regions around the breakpoints. Several classifiers are employed to classify the candidate predictions and remove false positives. We test our classifier models on simulated and real genomes and show that the proposed approach improves the performance of state-of-the-art algorithms.
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Chung, Sung Suk, Il Young Yoo e Kyoung Hwa Joung. "Post-partum blues among Korean mothers: A structural equation modelling approach". International Journal of Mental Health Nursing 22, n. 4 (25 settembre 2012): 359–67. http://dx.doi.org/10.1111/j.1447-0349.2012.00880.x.
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Ferreira, Joana F., Cláudio M. Gomes e Bárbara J. Henriques. "Implication of post-translational modifications on ETF, a structural and functional approach". Free Radical Biology and Medicine 120 (maggio 2018): S144. http://dx.doi.org/10.1016/j.freeradbiomed.2018.04.475.
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Asano, Shoh, Benjamin D. Engel e Wolfgang Baumeister. "In Situ Cryo-Electron Tomography: A Post-Reductionist Approach to Structural Biology". Journal of Molecular Biology 428, n. 2 (gennaio 2016): 332–43. http://dx.doi.org/10.1016/j.jmb.2015.09.030.
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Willoughby, Michael, Nathan Vandergrift, Clancy Blair e Douglas A. Granger. "A Structural Equation Modeling Approach for the Analysis of Cortisol Data Collected Using Pre–Post–Post Designs". Structural Equation Modeling: A Multidisciplinary Journal 14, n. 1 (1 gennaio 2007): 125–45. http://dx.doi.org/10.1080/10705510709336740.
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Willoughby, Michael, Nathan Vandergrift, Clancy Blair e Douglas A. Granger. "A Structural Equation Modeling Approach for the Analysis of Cortisol Data Collected Using Pre?Post?Post Designs". Structural Equation Modeling: A Multidisciplinary Journal 14, n. 1 (gennaio 2007): 125–45. http://dx.doi.org/10.1207/s15328007sem1401_7.
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Lander, Ingrid. "Gender, Aging and Drug Use: A Post-structural Approach to the Life Course". British Journal of Criminology 55, n. 2 (5 dicembre 2014): 270–85. http://dx.doi.org/10.1093/bjc/azu099.
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Rippe, Christian, Scott Case e Brian Lattimer. "Modeling post-fire behavior of aluminum structural components using a maximum temperature approach". Fire Safety Journal 91 (luglio 2017): 561–67. http://dx.doi.org/10.1016/j.firesaf.2017.03.041.
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Fitlayeni, Rinel, Marleni Marleni, Ikhsan Muharma Putra, Afrizal Afrizal e Indraddin Indraddin. "The Structural Factors Facilitating Post-Earthquake Compromise between Contracting Parties". MIMBAR : Jurnal Sosial dan Pembangunan 35, n. 1 (24 giugno 2019): 127–36. http://dx.doi.org/10.29313/mimbar.v35i1.4238.
Testo completoAbstract (sommario):
The earthquake on September 30, 2009 occurred in West Sumatra had caused great loses and damages in several cities, including the central market known as Pasar Raya in Padang City. This condition had led to various malfunctions and local communities were unable to meet post-disaster needs. The government as the authority was not fully in line with local needs that caused the occurrence of several conflicts of interest between the Government and the traders of Pasar Raya. This research is applying the qualitative approach with descriptive types. The informants are selected through purposive sampling technique consisting of traders and the government of Padang City. The data collection techniques are in-depth interviews, document studies, and focus group discussions (FGD). The study results show that the conflicts were no longer took place openly due to the compromise among parties involved with points as follows: a) the involvement of third parties to resolve the conflict, b) personal approach to the traders, c) resolving conflicts through non-litigation by the government.
Tesi sul tema "Post-structural approach"
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Stockhammer, Engelbert, e Özlem Onaran. "Accumulation, distribution and employment. A structural VAR approach to a Post-Keynesian Macro Model". Inst. für Volkswirtschaftstheorie und -politik, WU Vienna University of Economics and Business, 2002. http://epub.wu.ac.at/1220/1/document.pdf.
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The paper investigates the relation between effective demand, income distribution and unemployment empirically. Its aim is to evaluate Keynesian, Kaldorian and neoclassical hypotheses about the determination of labor market variables. To do so, a vector autoregression model consisting of capital accumulation, capacity utilization, the profit share, unemployment and the growth of labor productivity is estimated. A general post-Keynesian model following the lines of Kalecki and Kaldor is presented and provides the specification for a structural VAR. The model is estimated for the USA, UK and France. (authors' abstract)Series: Working Papers Series "Growth and Employment in Europe: Sustainability and Competitiveness"
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Wachowiak, Paul Stephen. "Relationships among Cynical Hostility, Metabolic Syndrome, and Cardiac Structure and Function in Multi-Ethnic Post-Myocardial Infarction Patients: A Structural Modeling Approach". Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_dissertations/291.
Testo completoAbstract (sommario):
BACKGROUND: Risk factors associated with Metabolic Syndrome (MetS) have been implicated in cardiovascular disease (CVD) development and outcomes. Few studies have investigated relationships between psychological variables, MetS factors, and indices of cardiac structure and function (CSF) among healthy individuals in a single conceptual model. No studies to date have analyzed such relationships in patients with CVD. METHODS: The present study examined associations between cynical hostility (CynHo), MetS factors, and CSF in 186 multi-ethnic post-myocardial infarction (MI) patients. Structural equation modeling was used to test a theory driven model of MetS that had good statistical fit. Primary MetS variables included waist circumference (WC), the homeostatic model of insulin resistance (HOMA-IR), glucose area under the curve (G-AUC), triglycerides (TRIG), high-density lipoprotein cholesterol (HDL-C), and diastolic blood pressures (DBP). Secondary MetS variables included plasminogen activator inhibitor-1 (PAI-1) and a latent inflammation variable comprised of CRP and IL-6. Cardiac function variables were fractional shortening (FS), E/A ratio, and rate-pressure product (RPP). A latent cardiac mass (CM) variable was also created. RESULTS: The final structural model had good model fit (Chi-Square(102)=100.65, p=0.52, CFI=1.00, RMSEA=0.00, and SRMR=0.04). Direct paths were supported between WC and CM and all MetS factors except TRIG and G-AUC. WC was indirectly associated with DBP via CM. The model supported positive direct paths between HOMA-IR and G-AUC, TRIG, and PAI-1, but not inflammation or HDL-C. HOMA-IR demonstrated a direct positive association with RPP and direct inverse associations with FS and E/A ratio. No direct paths were supported between other MetS variables except one between TRIG and HDL-C. CynHo demonstrated a direct positive relationship with HOMA-IR. CONCLUSIONS: Similar to findings in healthy individuals, central adiposity and IR play primary roles in CSF impairment in post-MI patients. Findings suggest that CynHo could promote the progression of metabolic dysfunction and cardiac disease via factors that influence the efficiency of glucose metabolism. Interventions for post-MI patients should take into account both direct and indirect effects of CynHo, central adiposity, and IR on the progression of CVD in this population to reduce adverse outcomes and improve quality of life.
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Schuler, Eric Robert. "When the Levee Breaks: An SEM Approach to Understanding the Narrative and the Anxiety-Buffer Disruption on PTSD Symptoms". Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984252/.
Testo completoAbstract (sommario):
The purpose of the present study was to assess if combining the two frameworks would account for more variance in PTSS than could be accounted for using the frameworks separately. An online community sample from Amazon.com's Mechanical Turk (N = 437), who reported experiencing a prior traumatic event, completed measures that reflected the constructs of narrative centrality, negative affectivity, and death concerns, along with a measure of PTSS. PTSS was regressed on the latent variables of death concerns, narrative centrality, and negative affectivity, along with the latent variable interactions between narrative centrality*death concerns and narrative centrality*negative affectivity. Death concerns was not be predictive of PTSS, whereas narrative centrality and negative affectivity were found to uniquely and interactively account for 77% of the variance in PTSS. Death concerns was found to be a separate construct from negative affectivity. The implications of these findings for the two frameworks are discussed along with future directions. By considering aspects of narrative centrality and negative affectivity, substantial portions of PTSS can be accounted for.
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Eklund, Julia. "Vilka är effekterna av problemet? : En policyanalys av Kristdemokraternas problempresentation gällande låst föräldrapenning". Thesis, Södertörns högskola, Statsvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-43980.
Testo completoAbstract (sommario):
Despite the fact that the introduction of reserved parental leave has resulted in a success for gender equality in general, there are parties in the Swedish Parliament that oppose this reform, the Christian Democrats being one of them. The purpose of the study was therefore to study the effects of the Christian Democrats' problem presentation regarding reserved parental leave. The essay's three research questions came from Carol Bacchi's WPR-approach, which aimed to find the party's problem presentation regarding reserved parental leave, what presuppositions these where based on, and what discursive and subjectification effects this gives. The study shows that the problem where parents' freedom of choice and high sickness rates. Based on feminist poststructuralism, we could see that the presuppositions turned out to be about a constructed categorization where sexual characteristics are set against each other. Finally, the study shows that this had several discursive- and subjectification effects where alternative problem presentations were excluded, and that individuals are limited based on the framework that the discourse sets up, which subjectifies people based on gender.
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Blackshear, Earnest Howard Rudolph. "Post-traumatic stress disorder a structural approach /". 2006. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1520/index.html.
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Leimola, Johanna. "A Post-Structural Approach to Language Theory in Relation to Paul Auster’s City of Glass". Thesis, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-52725.
Testo completoAbstract (sommario):
Do words mirror reality? This question has been at the core of several linguistic disputes for decades. Several scholars have investigated the relationship between the signifier and the signified, and different literary theories suggest different approaches. This study is a close reading analysis of Paul Auster’s City of Glass, a novel that has been the subject of several scholarly studies relating to the role of language. This study aims to analyse the role of signification in the novel seen from a post-structuralist perspective in order to show how Auster problematizes language. Several explicit remarks on language are made from various characters in the novel, each expressing and conveying different language views. Nevertheless, a post-structural view on language wins favour as post-structural ideas and concepts are seen in the narrative language and the constructive level of the text. The analysis shows that Auster uses a post-structural view on language to illustrate the instability of signification in language. Auster problematizes the stability of language in order to illustrate the tentativeness of truth and ambiguity of reality. The language view of the narrator is used to illustrate the mimetic view that language is able to accurately record reality. The mimetic view on language is problematized by using the notebook as a symbol for the relationship between the signifier and the signified. The arbitrariness of language is illustrated through the means of the notebook in order to problematize truth. Auster uses the character of the protagonist Daniel Quinn to illustrate the belief in an essential truth within literature. This view is then problematized by using arbitrariness in the structural level of the text in order to illustrate the relativity of truth. The character of Stillman Sr is used to illustrate the belief of man being able to control language. However, the search for a divine language turns out to be a gnostic and meaningless quest since no cosmic solutions are achieved. The failure of Stillman´s quest is used to argue for the predominance of language over man. Language determines how people perceive truth. The perception of truth and reality is dependent on language. Since language is arbitrary, there is no truth which consists outside of language.
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Su, Shian-shioung, e 蘇顯星. "The study of the evolvement of post-war Taiwanese cultural policy-analysis of historical-structural approach". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/54303493983981602795.
Testo completoAbstract (sommario):
碩士國立臺南大學
鄉土文化研究所碩 / 博士班
90
Taking to a time history framework in structure, the purpose of this thesis lies in providing a more stringent and in-depth analysis to the evolvement of post-war Taiwanese cultural development and policy drafting from an interactive and structuralized viewpoint focusing on cultural development in the context of social formation unique to Taiwan. Three objectives behind the study consist of, (1) Chronicling Taiwan’s post development and its social and cultural changes through Taiwan’s new cultural awareness and perspective with which to examine the phenomenon and obstacles in cultural movements led by a national organization and political orientation; (2) Chronicling Taiwan’s unique historical background behind Taiwan’s cultural development and cultural policy changes mirroring the history from political, economic and social perspectives; (3) Chronicling the new cultural policy of a cultural independence and industrialization taking to a grassroots Taiwanese culture developed upon a private sector-led dynamic with which to respond to an increasingly diverse world culture and the globalization trend. As the influence of three distinct domineering cultures that besieged Taiwan in a short century or so of time, a politics and economics-led regime since the Japanese occupation has stagnated Taiwan’s cultural movements but one that has been subjected to ill-intended distortion and repression. Inseparably tied to political, economic and social developments, the post-war Taiwanese cultural movements have had certain arrangements made to suit the overall environment at the time, noticeably of a cultural drafting policy that never strayed too far from political intervention, if not domination. In light of which, a prudent approach in examining the development of Taiwan’s cultural policy will not be complete without reflecting from the historical hierarchy interwoven by the political, economic and social movements. Past or present, Taiwan’s cultural policy remains in the hands of the government as politic influence continues to dictate how it takes shape, and it is often how the administration showcases its political strength by pushing forward certain cultural affairs. Yet despite a political-led force that delves into the cultural domain may often helps to endorse a legitimacy or create a mainstream status as a short-term yield, it is nevertheless troublesome in the long-run how the negative aspects a political regime tries to intervene cultural affairs to adversely create hurdles in cultural movements to outweigh the outcome at the end. Whether it be the Japanese Imperialism’s cultural invasion, or the Republic Party’s Chinese cultural reform movements under its authoritative rule, or the later programs, such as the Cultural Infrastructure Development, the Spiritual Reform, the presence of an official cultural body that manipulates the cultural policy and movements through grants and subsidies not only stymie cultural movements to a rigid unyielding form but often deprive it as mere showcase to lose a culture’s vivacity. The effort to secure a sound footing in cultural movements that ensures a sustainable future lies in an involuntary awakening and independence of the societal strength from the private sector to ensure a cultural development that is deep-rooted, with foresight and great diversity. Contrary to how the private sector’s temple gatherings and religious organizations had once thrived thanks to the earlier day’s social solidarity in Taiwan, the emergence of a homogeneous development as bound by the latter period’s societal strength curtailed and steered by the national’s cultural mammoth bullying that gradually eroded the strength of the private sector. Yet the societal strength is once again on the rise following a thriving democratic movement and a prosperous industrialized society as the homogenous national culture is now at risk of being displaced by a diverse grassroots culture. Which depicts a natural transformational process in which cultural movements would gradually be shifted to a community, social organization and institutional-led orientation, together with private advocacies, as the main force that helps to redefine grassroots awareness and talents through a host of citizen movements as an effective means to ensure its denizens with a democratic and fair chance to cultural participation, availing all tribal cultures a chance to metamorphose, mirror and learn form one another that also work hand-in-hand with rebuilding national dynamics.
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Hsien-Hsing, Su, e 蘇顯星. "The stady of the evolvement of post-war Taiwanese cultural policy-analysis of historical-structural approach". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/01085323795562828846.
Testo completoAbstract (sommario):
碩士臺南師範學院
鄉土文化研究所
90
Abstract Taking to a time history framework in structure, the purpose of this thesis lies in providing a more stringent and in-depth analysis to the evolvement of post-war Taiwanese cultural development and policy drafting from an interactive and structuralized viewpoint focusing on cultural development in the context of social formation unique to Taiwan. Three objectives behind the study consist of, (1) Chronicling Taiwan’s post development and its social and cultural changes through Taiwan’s new cultural awareness and perspective with which to examine the phenomenon and obstacles in cultural movements led by a national organization and political orientation; (2) Chronicling Taiwan’s unique historical background behind Taiwan’s cultural development and cultural policy changes mirroring the history from political, economic and social perspectives; (3) Chronicling the new cultural policy of a cultural independence and industrialization taking to a grassroots Taiwanese culture developed upon a private sector-led dynamic with which to respond to an increasingly diverse world culture and the globalization trend. As the influence of three distinct domineering cultures that besieged Taiwan in a short century or so of time, a politics and economics-led regime since the Japanese occupation has stagnated Taiwan’s cultural movements but one that has been subjected to ill-intended distortion and repression. Inseparably tied to political, economic and social developments, the post-war Taiwanese cultural movements have had certain arrangements made to suit the overall environment at the time, noticeably of a cultural drafting policy that never strayed too far from political intervention, if not domination. In light of which, a prudent approach in examining the development of Taiwan’s cultural policy will not be complete without reflecting from the historical hierarchy interwoven by the political, economic and social movements. Past or present, Taiwan’s cultural policy remains in the hands of the government as politic influence continues to dictate how it takes shape, and it is often how the administration showcases its political strength by pushing forward certain cultural affairs. Yet despite a political-led force that delves into the cultural domain may often helps to endorse a legitimacy or create a mainstream status as a short-term yield, it is nevertheless troublesome in the long-run how the negative aspects a political regime tries to intervene cultural affairs to adversely create hurdles in cultural movements to outweigh the outcome at the end. Whether it be the Japanese Imperialism’s cultural invasion, or the Republic Party’s Chinese cultural reform movements under its authoritative rule, or the later programs, such as the Cultural Infrastructure Development, the Spiritual Reform, the presence of an official cultural body that manipulates the cultural policy and movements through grants and subsidies not only stymie cultural movements to a rigid unyielding form but often deprive it as mere showcase to lose a culture’s vivacity. The effort to secure a sound footing in cultural movements that ensures a sustainable future lies in an involuntary awakening and independence of the societal strength from the private sector to ensure a cultural development that is deep-rooted, with foresight and great diversity. Contrary to how the private sector’s temple gatherings and religious organizations had once thrived thanks to the earlier day’s social solidarity in Taiwan, the emergence of a homogeneous development as bound by the latter period’s societal strength curtailed and steered by the national’s cultural mammoth bullying that gradually eroded the strength of the private sector. Yet the societal strength is once again on the rise following a thriving democratic movement and a prosperous industrialized society as the homogenous national culture is now at risk of being displaced by a diverse grassroots culture. Which depicts a natural transformational process in which cultural movements would gradually be shifted to a community, social organization and institutional-led orientation, together with private advocacies, as the main force that helps to redefine grassroots awareness and talents through a host of citizen movements as an effective means to ensure its denizens with a democratic and fair chance to cultural participation, availing all tribal cultures a chance to metamorphose, mirror and learn form one another that also work hand-in-hand with rebuilding national dynamics.
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Wallace, James, e Nelarine Cornelius. "Community development and social regeneration: how the third sector addresses the needs of BME communities in post-industrial cities". 2010. http://hdl.handle.net/10454/6227.
Testo completoAbstract (sommario):
Interest in third sector organisations (TSOs) is growing as their role in addressing social regeneration, especially in urban environments, is regarded as crucial by governmental and supra-governmental organisations. The challenge is increased in multicultural environments, where those from ethnic minorities may struggle to participate in the mainstream economy and society more broadly. There is an assumption that TSOs make a positive contribution to the social good of the diverse communities and client groups that they serve. However, although there have been many studies of ethicality in commercial and public sector organisations, few focus on TSOs. Furthermore, black and minority ethnic (BME) TSOs, in particular face specific pressures, caught between the high expectations of their capacity to engage with diverse communities where the public sector has failed and, in common with all TSOs, the struggle to secure the resources necessary to manage their organisations and deliver front-line services. In this article, we investigate how implicitly ethicality is constructed in TSOs, including those with a primary mission to provide support for and services to BME communities. Building on information obtained for 305 TSOs in a post-industrial city we develop a structural equation model (SEM) in order to evaluate the relationships between elements that we argue comprise ethicality. We then assess the manner in which TSOs generally, and BME TSOs specifically, vary in the manner in which they communicate their ethical purpose and the outcomes of their actions.
Libri sul tema "Post-structural approach"
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Education reform: A critical and post-structural approach. Buckingham [England]: Open University Press, 1994.
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Dyker, David A., e Slavo Radosevic, a cura di. Innovation and Structural Change in Post-Socialist Countries: A Quantitative Approach. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4463-6.
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Popp, Stephan. Muhammad Iqbal's romanticism of power: A post-structural approach to his Persian lyrical poetry. Wiesbaden: Reichert, 2004.
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Alexander, David, Colin Henry Davidson, Andrew Fox, Cassidy Johnson e Gonzalo Lizzaralde, a cura di. Post-Disaster Reconstruction: Meeting Stakeholder Interests. Florence: Firenze University Press, 2007. http://dx.doi.org/10.36253/978-88-8453-611-2.
Testo completoAbstract (sommario):
This book collects together 46 papers presented at the Third Biennial Conference of i-Rec, International Group for the Diffusion of Research and Information on Post-Disaster Reconstruction. The various sections of the book cover the technical and administrative aspects of housing and other buildings after disaster. The approach to post-disaster shelter and reconstruction exemplified by this volume is fully interdisciplinary. A very wide range of perspectives is covered, including the disciplines and sub-disciplines of seismic and structural engineering, architecture, applied geography and geology, environmental psychology, paediatrics, development studies, economics, medicine and public health, management studies and political science. The volume is also intended to commemorate the 40th anniversary of the floods that severely damaged Florence in 1966 and did terrible damage to priceless art treasures.
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Dyker, David A. Innovation and Structural Change in Post-Socialist Countries: A Quantitative Approach. Ingramcontent, 2012.
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A, Dyker David, e Radošević Slavo 1955-, a cura di. Innovation and structural change in post-socialist countries: A quantitative approach. Dordrecht: Kluwer Academic, 1999.
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Ratna, Kapur. Part VII Rights—Substance and Content, Ch.41 Gender Equality. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780198704898.003.0041.
Testo completoAbstract (sommario):
This chapter examines gender equality in post-colonial India, particularly some of the structural and normative factors that make it difficult for women to bring constitutional challenges in their fight for greater equality. It considers efforts at using law, especially constitutional equality rights, to challenge laws promoting sex discrimination in India, along with the use of fundamental rights to equality as guaranteed by Articles 14, 15, and 16 of the Indian Constitution to challenge legal rules and provisions believed to discriminate against women. The chapter describes two different approaches to equality and gender difference through which the constitutional guarantees can be understood: a formal approach and a substantive approach. It then explores how familial ideology has influenced the judiciary’s approach to gender difference and provides examples to illustrate the impact of fundamental rights challenges on the very familial and legal discourses that have constituted women as different and subordinate.
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Berry, Craig, e Scott Lavery. Towards a Political Economy of Depoliticization Strategies. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198748977.003.0011.
Testo completoAbstract (sommario):
This chapter argues that the literature on depoliticization tends to overlook the structural context within which depoliticization processes take place and, in particular, the way in which depoliticization strategies are embedded within distinctively capitalist forms of social organization. Too often, analysis focuses on categorizing different ‘types’ of depoliticization processes or outcomes, while neglecting to examine how depoliticization strategies are used as a discursive tool for embedding or shoring up dominant models of economic growth. The chapter seeks to resituate depoliticization in the political economy framework developed originally by Peter Burnham, while acknowledging that Burnham’s reductionist approach to institutions has paradoxically encouraged subsequent scholars to largely ignore structural context in characterizing instances of depoliticization. The chapter offers a preliminary application of an alternative political economy approach by examining macroeconomic policymaking in the post-crisis period in the United Kingdom, focusing on the Help to Buy scheme and the Office for Budget Responsibility.
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Grzymala‐Busse, Anna, e Pauline Jones Luong. Democratization. A cura di Donald A. Wittman e Barry R. Weingast. Oxford University Press, 2009. http://dx.doi.org/10.1093/oxfordhb/9780199548477.003.0036.
Testo completoAbstract (sommario):
This article discusses democratization, and looks specifically at its post-Communist implications. It draws upon the experience of post-Communist countries in order to show how structural preconditions allow elite action as much as they limit it. A review and contrast of the formal and informal approaches is provided, followed by a discussion of the post-Communist experience. The article concludes with an evaluation of the success of these approaches in explaining the variation in democratization outcomes.
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Cowan, Brian. Making Publics and Making Novels. A cura di Alan Downie. Oxford University Press, 2013. http://dx.doi.org/10.1093/oxfordhb/9780199566747.013.002.
Testo completoAbstract (sommario):
The two most influential works for the study of eighteenth-century literary culture in the last half-century must surely be Ian Watt’s The Rise of the Novel (1957) and Jürgen Habermas’s The Structural Transformation of the Public Sphere (1962). This essay discusses the influence of both Watt and Habermas on studies of the novel and the public sphere, and it explores the reasons for the endurance of their arguments despite decades of substantial criticism devoted to their interpretative shortcomings. It also explains the emergence of a post-Habermasian approach to the history of public-making in response to these criticisms. It concludes by discussing how recent post-Habermasian studies of news culture and political partisanship may illuminate the history of the origins of the English novel.
Capitoli di libri sul tema "Post-structural approach"
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Cevallos-Torres, Lorenzo J., Diana Minda Gilces, Alfonso Guijarro-Rodriguez, Ronald Barriga-Diaz, Maikel Leyva-Vazquez e Miguel Botto-Tobar. "An Approach to the Detection of Post-seismic Structural Damage Based on Image Segmentation Methods". In Communications in Computer and Information Science, 644–58. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-05532-5_49.
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Morris, Gareth, Mark Browne, Kirsti Murahidy e Mike Jacka. "Christchurch Town Hall Complex: Post-Earthquake Ground Improvement, Structural Repair, and Seismic Retrofit". In Case Studies on Conservation and Seismic Strengthening/Retrofitting of Existing Structures, 145–72. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2020. http://dx.doi.org/10.2749/cs002.145.
Testo completoAbstract (sommario):
<p>The Christchurch Town Hall (CTH) complex contains six reinforced concrete buildings constructed circa 1970 in Christchurch, New Zealand (NZ). The complex is used for performing arts and entertainment, with an Auditorium that is internationally recognized for its acoustics. It is listed as a Grade-1 heritage building due to its cultural and historical significance. Unfortunately, the CTH foundation system was not originally designed to accommodate liquefaction-induced differential settlement and lateral spreading effects, as highlighted by the 2010–2011 Canterbury earthquake sequence. Although the most extreme ground motions exceeded the NZS 1170.5 code-defined 1/2500 year earthquake loads, the CTH structures performed remarkably well for a design that pre-dated modern seismic codes. Most of the observed structural damage was a result of the differential ground deformations, rather than in response to inertial forces. The post-earthquake observations and signs of distress are presented herein. The primary focus of this paper is to describe two major features of the seismic retrofit project (initiated in 2013) which were required to upgrade the CTH complex to meet 100% of current NZS 1170.5 seismic loadings. Firstly, the upgrade required extensive ground improvement and a new reinforce concrete mat slab to mitigate the impacts future ground deformations. Soil stabilization was provided by a cellular arrangement of jet-grout columns, a relatively new technique to NZ at the time. The new mat slab (typically 600-900 mm) was constructed over the stabilized soils. Secondly, upgrading the superstructure had many constraints that were overcome via a performance-based design approach, using non-linear time-history analysis. Recognizing the heritage significance, the superstructure “resurrection” as a modern building was hidden within the original skin minimized disruption of heritage fabric. Retrofit solutions were targeted, which also minimized the overall works. The 2015–2019 construction phase is briefly discussed within, including jet-grout procedures and sequencing considerations.</p>
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Sauntson, Helen. "From Structural to Post-structural: Critical Feminist Approaches". In Approaches to Gender and Spoken Classroom Discourse, 117–65. London: Palgrave Macmillan UK, 2012. http://dx.doi.org/10.1057/9780230343580_4.
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Logan, J. D., e A. D. Cliff. "A Structural Time Series Approach to Forecasting the Space-Time Incidence of Infectious Diseases: Post-War Measles Elimination Programmes in the United States and Iceland". In Advances in Spatial Science, 101–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-03499-6_6.
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Pardey, Charlotte. "Processing the Revolution: Exploring the Ways Tunisian Novels Reflect Political Upheavals". In Re-Configurations, 247–59. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-31160-5_16.
Testo completoAbstract (sommario):
Zusammenfassung Several years after the Tunisian uprising of 2010–11, it is now time to explore the literary production of its aftermath. This chapter focuses on novels written in French and Arabic that have found acclaim in the Tunisian literary scene, all of them winners of the Tunisian prize for fiction, the Prix Comar d’Or. At the same time, the works deal in some way with the uprising of 2010/2011. This starting point allows various insights: First, it compares the novels, exploring trends such as autobiographic reflections and the turn to past revolutions. Secondly, the chapter asks more structural questions about the context of the novels’ production (authors, publishers) as well as about their honorary reception through literary awards. Beyond characterizing the post-revolutionary Tunisian literary scene, this approach also makes it possible to address the ways in which the Tunisian literary establishment wants the revolutionary events to be reworked in literature.
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Umamaheswari, A., A. Puratchikody e Sakthivel Balasubramaniyan. "Target Identification of HDAC8 Isoform for the Treatment of Cancer". In Advances in Medical Technologies and Clinical Practice, 140–72. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7326-5.ch007.
Testo completoAbstract (sommario):
Target identification has been considered as a chief parameter in drug discovery as it fully characterizes on-target and off-target effects of drug binding. Cell signaling receptors, structural proteins, and post-translational modifications of histones by histone deacetylases are the most widespread targets that are progressively being explored. The FDA approved histone deacetylases inhibitors and the majority of HDACi in and out of clinical trials based on the activities of 11 isoforms of the enzyme in non-selective influence approach. Unfortunately, reported HDACi does not possess a high degree of structural specificity and ultimately lessens the therapeutic index with many dose limiting toxicities. This chapter illustrates how different approaches are incorporated into the novel inhibitors discovery that are truly isoform-selective and which are specifically involved in targeting only a particular isozyme. Further, it highlights the aspects relating to provide a wider therapeutic index with an improved toxicity profile of lead like epigenetic modulators.
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Kershaw, David. "Announcement and the Offer Dance". In Principles of Takeover Regulation. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199659555.003.0005.
Testo completoAbstract (sommario):
This Chapter considers the Code’s regulation of the pre-offer period. It considers both the regulation of the provision of information to shareholders and to the market about the possibility that an offer may be made and the regulation of the courtship period prior to the offer where the bidder attempts to persuade the target board and the target shareholders to be receptive to the offer (the “pre-bid dance”). More precisely, it considers the disclosures that any shareholder must make when specified ownership thresholds are crossed and the circumstances in which the Code requires an announcement about the possibility of an offer. The Chapter critiques the Code’s strict approach to the suggested terms included in a possible offer announcement, questioning whether its restriction on amendment in the absence of reservations significantly reduces the unavoidable uncertainty surrounding a possible offer. The Chapter is also critical of the Panel’s approach to requests to amend terms when no reservations to suggested terms are included in the announcement. In this regard, it shows how the Hearings Committee’s reasoning supporting its very strict approach in the Kalahari Minerals case is unpersuasive. The Chapter then considers the regulation of the pre-bid dance including the put-up or shut up rule and the Panel’s post-Cadbury difficulties in regulating statements of future intention, which initially led to expansive and unthought-through regulation of intention statements and then to recent Code amendments providing for Post-Offer Undertakings and Post-Offer intention statements. This section concludes by arguing that although several of Code pre-bid rules and rulings are difficult to make sense of on their stated terms, they can be made sense of in terms of attempts to shift the structural pro-bidder power balance of the Code back towards the target board. They demonstrate that the Code does not, as it purports to do, take a neutral position between facilitating and impeding takeovers and that the structural power balance, generated most importantly by the non-frustration rule, distorts rule-making in other areas of the Code. Finally, the Chapter considers the firm offer announcement and its effects and the Codes share purchase disclosure regime during an offer.
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Choi, Ryan, e Raymond Wong. "Scalable XML Filtering for Content Subscriptions". In Theoretical and Practical Advances in Information Systems Development, 120–52. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-60960-521-6.ch007.
Testo completoAbstract (sommario):
Over the past few years, there have been an increasing number of Web applications that exchange various types of data on the Internet. In this article, we propose a technique for building efficient and scalable XML publish/subscribe applications. In particular, we look at the problem of processing streaming XML data efficiently against a large number of branch XPath queries. To improve the performance of XML data processing, the branch queries that have similar query characteristics are grouped, and common paths between the queries in the same group are identified. Then, these groups of queries are processed against an XML schema to validate query structures. After performing structural matching of queries, the queries are organized in a way that multiple queries can be evaluated simultaneously in the post-processing phase. In the post-processing phase, join operations are executed in a pipeline fashion, and intermediate join results are shared amongst the queries in the same group. The benefit of this approach is that, the total number of join operations performed in the post-processing phase is significantly reduced. In addition, we also present how to efficiently return all matching elements for each matching branch query. Experiments show that our proposal is efficient and scalable compared to previous works.
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Garcia-Hallett, Janet, e Kashea P. Kovacs. "The Promise of Unpacking the Black/White Dichotomy for Reentry Research". In Beyond Recidivism, 135–50. NYU Press, 2020. http://dx.doi.org/10.18574/nyu/9781479862726.003.0007.
Testo completoAbstract (sommario):
Scholars have extensively examined prisoner reentry, spanning across various aspects of post-incarceration life and exploring the intersections of gender, class, and race. In fact, racial background has increasingly appeared as a central focus in reentry research, accounting for the impact of social-structural factors on the reintegration of black individuals. Yet, less attention is given to divergent experiences across ethnicities—creating a black/white dichotomy in reentry research. This chapter reviews how large racial classifications may have negative consequences on providing adequate assistance to all formerly incarcerated individuals and on addressing unique reentry issues they encounter across ethnic groups and subgroups. This chapter argues that unpacking the black/white dichotomy is a promising approach to expand knowledge of prisoner reentry and enhance programmatic efforts to support reintegration.
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Chakraborty, Hirak Jyoti, Aditi Gangopadhyay, Sayak Ganguli e Abhijit Datta. "Protein Structure Prediction". In Biotechnology, 156–84. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8903-7.ch007.
Testo completoAbstract (sommario):
The great disagreement between the number of known protein sequences and the number of experimentally determined protein structures indicate an enormous necessity of rapid and accurate protein structure prediction methods. Computational techniques such as comparative modeling, threading and ab initio modelling allow swift protein structure prediction with sufficient accuracy. The three phases of computational protein structure prediction comprise: the pre-modelling analysis phase, model construction and post-modelling refinement. Protein modelling is primarily comparative or ab initio. Comparative or template-based methods such as homology and threading-based modelling require structural templates for constructing the structure of a target sequence. The ab initio is a template-free modelling approach which proceeds by satisfying various physics-based and knowledge-based parameters. The chapter will elaborate on the three phases of modelling, the programs available for performing each, issues, possible solutions and future research areas.
Atti di convegni sul tema "Post-structural approach"
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Kalnins, Kaspars, Janis Auzins e Rolands Rikards. "Metamodeling Approach for Analysis of Post-Buckling in Composite Panels with Structural Degredation". In 11th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-7104.
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Manning, B. W., T. Stevens, G. Morandin, R. G. Sauve´, R. Richards, S. Mantro e J. Czajkowski. "Piping System Structural Integrity Simulation for Post LOCA Water Hammer Loads". In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1292.
Testo completoAbstract (sommario):
The Canadian Nuclear Safety Commission (CNSC) required as part of the operating license for Ontario Power Generation’s Darlington Nuclear Generating Station, that the structural integrity of the piping following a loss of coolant accident (LOCA) be demonstrated. This is necessary to ensure that no subsequent pressure boundary failures will impede the ability to maintain fuel cooling. The injection of cold emergency coolant following a LOCA creates the potential for the occurrence of condensation-induced water hammers (CIWH) in the primary heat transport (PHT) system piping. Classical linear elastic piping analysis using the class 1 NB-3656 rules of the ASME Boiler & Pressure Vessel Code failed to demonstrate the adequacy of the piping and/or its supports that were designed using the linear elastic rules of subsection NF for nine of the twelve piping models that comprise the PHT system. A decision was made to undertake a state-of-the-art non-linear explicit analysis in order to qualify the piping. Strain rather than stress limits would be applied similar to those being developed by ASME for nuclear packaging undergoing accidental impact during transportation. In order to address the feasibility of this approach, a non-linear analysis was performed on a portion of one of the piping systems. The piping was modeled as shells and again as beam elements with and without detailed modeling of the supports. After these initial simulations, it was determined that the piping could be modeled with simplified beam elements, however, the supports would require a more detailed modeling in order to determine the extent of support damage and the effect the supports have on the integrity of the piping system itself. This paper addresses the non-linear modeling of the piping models and discusses the modeling details, assumptions and analysis results. This approach is shown to be a useful alternative for predicting the extent of structural damage that can be expected by a Level D event such as a condensation induced water hammer following a loss of coolant accident.
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Lu, Wei, Charles N. Archie, Stacey Stone, Hyoung H. Kang e Prasanna R. Chitturi. "Total measurement uncertainty and total process precision evaluation of a structural metrology approach to monitoring post-CMP processes". In Microlithography 2004, a cura di Richard M. Silver. SPIE, 2004. http://dx.doi.org/10.1117/12.538051.
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Isnadi, Biramarta, Luong Ann Lee, Sok Mooi Ng, Ave Suhendra Suhaili, Quailid Rezza M Nasir, Hanisah Sham, Kathy Ping Puloh et al. "A Hybrid Topside Structural Approach to the Management of Aging Fleet". In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21174-ms.
Testo completoAbstract (sommario):
Abstract The objective of this paper is to demonstrate the best practices of Topside Structural Integrity Management for an aging fleet of more than 200 platforms with about 60% of which has exceeded the design life. PETRONAS as the operator, has established a Topside Structural Integrity Management (SIM) strategy to demonstrate fitness of the offshore topside structures through a hybrid philosophy of time-based inspection with risk-based maintenance, which is in compliance to API RP2SIM (2014) inspection requirements. This paper shares the data management, methodology, challenges and value creation of this strategy. The SIM process adopted in this work is in compliance with industry standards API RP2SIM, focusing on Data-Evaluation-Strategy-Program processes. The operator HSE Risk Matrix is adopted in risk ranking of the topside structures. The main elements considered in developing the risk ranking of the topside structures are the design and assessment compliance, inspection compliance and maintenance compliance. Effective methodology to register asset and inspection data capture was developed to expedite the readiness of Topside SIM for a large aging fleet. The Topside SIM is being codified in the operator web-based tool, Structural Integrity Compliance System (SICS). Identifying major hazards for topside structures were primarily achieved via data trending post implementation of Topside SIM. It was then concluded that metal loss as the major threat. Further study on effect of metal loss provides a strong basis to move from time-based maintenance towards risk-based maintenance. Risk ranking of the assets allow the operator to prioritize resources while managing the risk within ALARP level. Current technologies such as drone and mobile inspection tools are deployed to expedite inspection findings and reporting processes. The data from the mobile inspection tool is directly fed into the web based SICS to allow reclassification of asset risk and anomalies management.
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Li, Chenfeng, Huilong Ren, Zhongqiu Zhao, Xiaodong Zhao, Ji Zeng e Donghao Xu. "An Approximate Calculation Approach for Ultimate Strength of Ship Hull Girder". In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-11023.
Testo completoAbstract (sommario):
The assessment of the ultimate strength of a ship structure is very important not only for the initial design but also for the operation, maintenance, and repair of the structure. There exist two typical methods to assess the ultimate strength of stiffened panel and hull girder. One is the approximate calculation method and the other is the progressive collapse analysis. The approximate calculation method is based on ship beam-theory mainly, and the ultimate moment was calculated by assuming stress distribution of the whole section of the ship girders, which can not effectively consider the structural post-buckling behaviour. Based on progressive collapse mechanism and hull’s beam theory, A approximate calculation approach was proposed. By calculating the ultimate strength of stiffened panels in the distal end hull section, the deflections were obtained when the different stiffened panel reaching in the limit state, and then the stress state and bending moment of section were determined with different deflections, the hull’s ultimate moment value is determined by searching and comparing finally. The numerical examples show that the presented method was reasonable and effective compared with traditional direct calculation method and progressive collapse analysis. The method given hereof followed the progressive collapse mechanism through inversion searching in some degree, and the structural post-buckling behaviour was effectively considering.
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Jadaan, Osama M., e Gregory Boys. "Energy Approach for Multiaxial Fatigue Life Prediction Using Finite Element Analysis". In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0137.
Testo completoAbstract (sommario):
Abstract A new approach, based on virtual strain energy, has recently been proposed and proven successful in collapsing all data for various loading conditions for a given material and environment into a single curve. Two energy parameters associated with two different physical modes of failure were used to predict the lifetime. The first parameter is a Mode I energy parameter associated with the critical plane where principal stress and strain take place, while the second parameter is a mode II energy parameter associated with the critical planes where maximum shear stresses and strains occur. The objective of this research is to incorporate this theory into a Finite Element Method (FEM) code in order to predict the lifetime of structural components subjected to complex loading. During the post processing stage of the program, the calculated stresses and strains will be used to evaluate the normal (Mode I) and shear (mode II) energy parameters, which subsequently can be used to predict the lifetime for the given structural component. Biaxial fatigue data obtained from the literature for SAE 1045 steel were used in this study to demonstrate the ability of incorporating this energy approach into FEM codes to predict the fatigue life of structural components. This ability is demonstrated by comparing the energy parameters calculated using FEM to those calculated using the experimental data.
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Chen, Peng, Guangda Hu, Soheil Nazarian e Guirong Yan. "Structural Damage Detection Based on an Improved Edge-Detection Technique". In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/smasis2013-3010.
Testo completoAbstract (sommario):
To localize small damage from mode shapes, the polynomial annihilation edge detection method has been proposed and demonstrated its effectiveness on different types of structural components [7]. However, much computational effort involved in this approach lowers the damage detection speed. To alleviate this difficulty, in this paper, we improve the approach by first using the divided difference approach to identify the region(s) in which jump discontinuities are located, and then only applying the polynomial annihilation method to points in the identified region. In this way, the computational burden of this approach is significantly relieved, while the accuracy is still maintained. The improved approach has been validated by numerical simulations on a cable-stayed bridge model. This approach only requires post-damage mode shapes.
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Wang, Yining, Erva Ulu, Aarti Singh e Levent Burak Kara. "Efficient Load Sampling for Worst-Case Structural Analysis Under Force Location Uncertainty". In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85310.
Testo completoAbstract (sommario):
An important task in structural design is to quantify the structural performance of an object under the external forces it may experience during its use. The problem proves to be computationally very challenging as the external forces’ contact locations and magnitudes may exhibit significant variations. We present an efficient analysis approach to determine the most critical force contact location in such problems with force location uncertainty. Given an input 3D model and regions on its boundary where arbitrary normal forces may make contact, our algorithm predicts the worst-case force configuration responsible for creating the highest stress within the object. Our approach uses a computationally tractable experimental design method to select number of sample force locations based on geometry only, without inspecting the stress response that requires computationally expensive finite-element analysis. Then, we construct a simple regression model on these samples and corresponding maximum stresses. Combined with a simple ranking based post-processing step, our method provides a practical solution to worst-case structural analysis problem. The results indicate that our approach achieves significant improvements over the existing work and brute force approaches. We demonstrate that further speedup can be obtained when small amount of an error tolerance in maximum stress is allowed.
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Liu, M., e C. Cross. "Subsea Pipeline UHB Design: An Improved Analysis Approach". In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54253.
Testo completoAbstract (sommario):
A subsea pipeline operating at temperature and pressure may buckle both vertically and laterally. For a trenched and buried pipeline, the propensity to upheaval buckling (UHB) is a major design concern. Predictive UHB design is typically required at the outset to determine both trenching and backfilling requirements. Additional rockdump schedule can be established by analysing post pipelay OOS survey data incorporating appropriate safety factors based on a structural reliability analysis. The normal approach is to examine the pipeline imperfection survey statistics and data accuracy. The structural reliability analysis and load factor calculation is typically performed a priori based on the assumed imperfections using the methodology outlined in ref [1]. The additional rockdump schedule is derived from the crown of the pipeline imperfections regardless of adjacent profiles and overall backfill data. A new pseudo energy method for UHB and OOS is proposed and discussed in this paper based on the variational principle and modal analysis. The approach takes into account the effects of varying effective axial force, trench imperfections and vertical uplift resistance, by combining both axial friction and lateral resistance methods into a unified model. A new concept, effective uplift resistance and associated load is also introduced to deal with non-uniform backfill cover. Adjacent imperfections and backfill profiles are considered in detail. An FE model is developed to consist of 3-noded quadratic pipe elements using ABAQUS Ver 6.12 and iterations of FE analyses are performed to demonstrate the tangible benefits of the approach specifically for UHB OOS design in relation to target trenching and backfilling, leading to improved reliability and potential cost saving in UHB OOS design and rockdump installation.
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Cheok, B. T., e A. Y. C. Nee. "Algorithms for Nesting of Ship/Offshore Structural Plates". In ASME 1991 Design Technical Conferences. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/detc1991-0122.
Testo completoAbstract (sommario):
Abstract This paper discusses the development of a set of algorithms for the automatic nesting of ship/offshore structural plates. The algorithms are developed to take advantage of the peculiarity of most ship/offshore structural plates with the aims of optimising material usage and minimising computer search time. The parts to be nested are first processed by a shape processing routine which employs a simple feature extraction approach to classify the plates according to predefined rules specially adopted for ship/offshore structural shapes. The most appropriate search path for each class of plates is used to obtain the best enclosing rectangle for similar shapes. The search paths are based on heuristics developed to simulate the manual method used by the human operator. Finally, all the plates are laid out on the stock sheet using a “rectangle packing” approach. A computer package, Patnest-Ship was developed to demonstrate the efficiency of the algorithms and very encouraging results are achieved. The input and output files to and from Patnest-Ship are described in DXF format so that it can be integrated with existing CAD/CAM systems. Pre- and post-processors for this package have been implemented on AutoCAD to permit the user to define the plates and interactively improve on the solutions provided by Patnest-Ship, if necessary.
Rapporti di organizzazioni sul tema "Post-structural approach"
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Yan, Yujie, e Jerome F. Hajjar. Automated Damage Assessment and Structural Modeling of Bridges with Visual Sensing Technology. Northeastern University, maggio 2021. http://dx.doi.org/10.17760/d20410114.
Testo completoAbstract (sommario):
Recent advances in visual sensing technology have gained much attention in the field of bridge inspection and management. Coupled with advanced robotic systems, state-of-the-art visual sensors can be used to obtain accurate documentation of bridges without the need for any special equipment or traffic closure. The captured visual sensor data can be post-processed to gather meaningful information for the bridge structures and hence to support bridge inspection and management. However, state-of-the-practice data postprocessing approaches require substantial manual operations, which can be time-consuming and expensive. The main objective of this study is to develop methods and algorithms to automate the post-processing of the visual sensor data towards the extraction of three main categories of information: 1) object information such as object identity, shapes, and spatial relationships - a novel heuristic-based method is proposed to automate the detection and recognition of main structural elements of steel girder bridges in both terrestrial and unmanned aerial vehicle (UAV)-based laser scanning data. Domain knowledge on the geometric and topological constraints of the structural elements is modeled and utilized as heuristics to guide the search as well as to reject erroneous detection results. 2) structural damage information, such as damage locations and quantities - to support the assessment of damage associated with small deformations, an advanced crack assessment method is proposed to enable automated detection and quantification of concrete cracks in critical structural elements based on UAV-based visual sensor data. In terms of damage associated with large deformations, based on the surface normal-based method proposed in Guldur et al. (2014), a new algorithm is developed to enhance the robustness of damage assessment for structural elements with curved surfaces. 3) three-dimensional volumetric models - the object information extracted from the laser scanning data is exploited to create a complete geometric representation for each structural element. In addition, mesh generation algorithms are developed to automatically convert the geometric representations into conformal all-hexahedron finite element meshes, which can be finally assembled to create a finite element model of the entire bridge. To validate the effectiveness of the developed methods and algorithms, several field data collections have been conducted to collect both the visual sensor data and the physical measurements from experimental specimens and in-service bridges. The data were collected using both terrestrial laser scanners combined with images, and laser scanners and cameras mounted to unmanned aerial vehicles.