Academic literature on the topic 'Fidelity to nature'
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Journal articles on the topic "Fidelity to nature"
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Borgmann, A. "Gender, Nature, and Fidelity." Ethics and the Environment 4, no. 2 (1999): 131–42. http://dx.doi.org/10.1016/s1085-6633(00)88416-8.
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Grusin, Richard A. "Representing Yellowstone: Photography, Loss, and Fidelity to Nature." Configurations 3, no. 3 (1995): 415–36. http://dx.doi.org/10.1353/con.1995.0027.
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Li, Hui, Zhiguo Huang, Xiao Liu, Chenbo Zeng, and Peng Zou. "Multi-fidelity meta-optimization for nature inspired optimization algorithms." Applied Soft Computing 96 (November 2020): 106619. http://dx.doi.org/10.1016/j.asoc.2020.106619.
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Wolery, Mark. "Intervention Research." Topics in Early Childhood Special Education 31, no. 3 (May 25, 2011): 155–57. http://dx.doi.org/10.1177/0271121411408621.
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In this commentary, the issue of fidelity assessment is addressed as it relates to Strain and Bovey’s article (2011). Four reasons are provided for measuring fidelity in intervention studies. Measuring fidelity (a) potentially allows investigators to document the findings were not due to the lack of fidelity in a study; (b) presents information about how transportable interventions are to the real world; (c) provides information for replication studies; and (d) sheds light on the nature of children’s experiences in the study.
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Rao, Lei, and Larry Owen. "Validation of High-Fidelity Traffic Simulation Models." Transportation Research Record: Journal of the Transportation Research Board 1710, no. 1 (January 2000): 69–78. http://dx.doi.org/10.3141/1710-08.
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A multistage validation framework that accounts for the realistic nature of traffic simulation output data is proposed. The framework consists of conceptual validation and operational validation. The operational validation comprises a qualitative approach, which involves static and animated Turing tests, and a quantitative approach, which involves three levels of statistical tests. Particularly in the third-level statistical test, the autocorrelation and nonstationary nature of traffic simulation output data is emphasized, its implications on validation methods are explored, and a univariate nonseasonal autoregressive-integrated-moving-average (ARIMA) modeling approach is proposed. Finally, numerical results for an actual freeway network are presented. The validation results illustrate that the proposed multistage validation procedure can account for the complexity of the validation task and its conclusions.
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Flannigan, Robert. "Constructing an Employee Duty of Fidelity?" Business Law Review 37, Issue 2 (April 1, 2016): 50–58. http://dx.doi.org/10.54648/bula2016010.
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What is the nature of the duty of fidelity? Is it just a confused replication of status fiduciary accountability or is it something more? One writer recently has argued that the duty of fidelity developed independently from fiduciary accountability and performs functions beyond the control of employee opportunism. That analysis is reviewed here. The historical arguments are found to be defective and the content claims opaque. We are left to wonder how the supposed duty uniquely regulates employee conduct.
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Kautz, Tiffany, and Naomi Forrester. "RNA Virus Fidelity Mutants: A Useful Tool for Evolutionary Biology or a Complex Challenge?" Viruses 10, no. 11 (November 1, 2018): 600. http://dx.doi.org/10.3390/v10110600.
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RNA viruses replicate with low fidelity due to the error-prone nature of the RNA-dependent RNA polymerase, which generates approximately one mutation per round of genome replication. Due to the large population sizes produced by RNA viruses during replication, this results in a cloud of closely related virus variants during host infection, of which small increases or decreases in replication fidelity have been shown to result in virus attenuation in vivo, but not typically in vitro. Since the discovery of the first RNA virus fidelity mutants during the mid-aughts, the field has exploded with the identification of over 50 virus fidelity mutants distributed amongst 7 RNA virus families. This review summarizes the current RNA virus fidelity mutant literature, with a focus upon the definition of a fidelity mutant as well as methods to confirm any mutational changes associated with the fidelity mutant. Due to the complexity of such a definition, in addition to reports of unstable virus fidelity phenotypes, the future translational utility of these mutants and applications for basic science are examined.
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Parzyszek, Magdalena. "Fidelity as a Value in the Opinion of Fiancees in the Light of the Pilot Study." Roczniki Pedagogiczne 14, no. 4 (December 30, 2022): 51–63. http://dx.doi.org/10.18290/rped22144.5.
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The puropse of this article is to present the views of brides on fidelity as a value. The article is in the form of a communication from the conducted research, which was of a pilot nature. The subject of studying the presented research was the value of fidelity in the opinion of people preparing for marriage.
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Nicolae, Cristina. "From Fidelity to Creativity: Translating Book Titles." Romanian Journal of English Studies 18, no. 1 (December 1, 2021): 153–60. http://dx.doi.org/10.1515/rjes-2021-0015.
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Abstract The present paper reflects our interest and research in the field of marketing translation and addresses the pragmatic nature of title translation for literary works, continuing the analysis of two translation pillars we work with, as previously employed in a study we published on film title translation. As such, “fidelity” and “creativity” would frame the dynamic exchange that authenticates the linguistic particularization of titles as reader-oriented or content-oriented while making use of translation methods and procedures.
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Ewing, Benjamin. "Conventionality, Disagreement, and Fidelity." Canadian Journal of Law & Jurisprudence 30, no. 1 (February 2017): 97–123. http://dx.doi.org/10.1017/cjlj.2017.5.
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Legal philosophers have taken what Ronald Dworkin called “theoretical disagreement” or disagreement about the “grounds of law,” to be of jurisprudential interest because of its putative incompatibility with legal positivism. The first aim of this article is to reframe theoretical disagreement as part of a broader challenge for all jurisprudential theories, positivist or not: how to refine and reconcile three theses that should appear plausible, important, and in tension. (1) Conventionality: the content of the law is determined, presumptively if not definitively, by meta-rules of law whose status as meta-rules arises from a consensus among relevant legal actors to treat them as having that status. (2) Disagreement: judges have theoretical disagreements about the law-i.e., disagreements about such meta-rules of law as legal interpretive methods, which they do not attempt to resolve merely by reference to explicit or implicit empirical consensus. (3) Fidelity: judges’ theoretical disagreements can be in good faith, reasonable, and legally resolvable. The article’s second ambition is to synthesize a broad range of jurisprudential writing pertinent to conventionality, theoretical disagreement, and judicial fidelity to law, in order to bring forward a potential reconciliation of all three that gives each one its due. Law and the requirements of judicial fidelity can be broadly conventional yet subject to reasonable, genuinely “theoretical disagreement” insofar as they are determined not only by contingent empirical truths about convergent practice but also by non-contingent conceptual truths about law’s nature and distinctive virtues. Unlike accounts of theoretical disagreement developed by theorists attacking or defending legal positivism, the view of theoretical disagreement I sketch here is ecumenical. It is compatible with accepting or rejecting legal positivism-though not on all positivists’ or all non-positivists’ terms.
Dissertations / Theses on the topic "Fidelity to nature"
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Grunert, Jonathan D. "Strict Fidelity to Nature: Scientific Taxidermy, U.S. Natural History Museums, and Craft Consensus, 1880s to 1930s." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/95836.
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As taxidermy increased in prominence in American natural history museums in the late nineteenth and early twentieth centuries, the idea of trying to replicate nature through mounts and displays became increasingly central. Crude practices of overstuffing skins gave way to a focus on the artistic modelling of animal skins over a sculpted plaster and papier-mâché form to create scientifically accurate and aesthetically pleasing mounts, a technique largely developed at Ward's Natural Science Establishment in Rochester, New York. Many of Ward's taxidermists utilized their authority in taxidermy practices as they formally organized into the short-lived Society of American Taxidermists (1880-1883) before moving into positions in natural history museums across the United States.
Through examinations of published and archival museum materials, as well as historic mounts, I argue that taxidermists at these museums reached an unspoken consensus concerning how their mounts would balance pleasing aesthetics with scientific accuracy, while adjusting their practices as they considered the priorities of numerous stakeholders. Taxidermists negotiated through administrative priorities, legacies of prominent craftsmen, and a battery of instructive materials, all claiming some authority as to what proper taxidermy could—and should—be. The shifts in taxidermy authority revealed truths about what taxidermy could mean, questions of how taxidermists identified themselves within the profession and to outsiders, practices for presenting taxidermy to museum visitors, and techniques for representing nature.
This project traces the paths of consensus for developing techniques to construct museum taxidermy from the 1883 end of the S.A.T until the founding of the Technical Section of the American Association of Museums (AAM) in 1929. Two critics who book-end this project—Robert Wilson Shufeldt, an army doctor, naturalist, and museum critic, and Lawrence Vail Coleman, director of preparation and exhibition, American Museum of Natural History, and director of the American Association of Museums—identified similar characteristics that suggest a like-minded approach as to what constituted proper museum taxidermy among museum taxidermists. Museum taxidermy carried with it a set of characteristics: accuracy and a pleasing aesthetic for Shufeldt; feeling, unity, action, balance, reality, and size for Coleman. These two sets of criteria complemented each other as they reified consensus. What complicated this finding was that taxidermists themselves did not acknowledge them specifically, only relating to them in passing, if at all. Regardless, taxidermic practice seemed to be consistent across these decades.
This study complicates the nature of scientific representation, in that it focuses a great deal on its artistry. Museum taxidermy is supposed to be an instructional tool, guiding museum visitors in the way they approach nature, and especially how they see animals, and focusing on teaching the science of animal behavior, biodiversity, and habitat, to name a few. It is a scientific object, representing the most up-to-date research in the field, but consensus surrounding it is not scientifically measurable. Instead, taxidermy consensus happened in hallways and back rooms (both literal and metaphorical), with little written down, and the mounts as the most substantial evidence that is had been achieved. Nevertheless, taxidermists negotiated the array of stakeholders present—museum administrators, naturalists, collectors, and the public—as they fashioned mounts that were both accurate and aesthetically pleasing representations of animal lives.Doctor of Philosophy
In this project I look at museum taxidermy in United States natural history museums, from the 1880s to 1930s. In that 50-year span, taxidermy practices coalesced around a primary technique for mounting animal skins, using a wooden form and papier-mâché as the structure for stretching the skin over it. But there was more to this consensus than using the same techniques, as two critics who book-end this project—Robert Wilson Shufeldt, an army doctor, naturalist, museum critic, etc., and Lawrence Vail Coleman, director of preparation and exhibition, American Museum of Natural History, and director of the American Association of Museums—identified similar characteristics that suggest a like-minded approach as to what constituted proper museum taxidermy among museum taxidermists. I argue in this project that taxidermists reached an unspoken consensus around their craft that balanced scientific accuracy with a pleasing aesthetic, to achieve mounts that would be both scientifically meaningful and not off-putting to museum visitors. Museum taxidermy carried with it a set of characteristics: accuracy and a pleasing aesthetic for Shufeldt; feeling, unity, action, balance, reality, and size for Coleman. And these two complement each other as they reify consensus. What complicated this finding was that taxidermists themselves did not acknowledge them specifically, only relating to them in passing, if at all. Regardless, taxidermy seemed to be consistent across these decades. This study complicates the nature of scientific representation, in that it focuses a great deal on its artistic nature. Museum taxidermy is supposed to be an instructional tool, guiding museum visitors in the way they approach nature, and especially how they see animals. Museum taxidermy generally shies away from terrifying visitors with animal size and ferocity, focusing instead on teaching the science of animal behavior, biodiversity, and habitat, to name a few. In this sense, it is a scientific object, representing the most up-to-date research in the field. Consensus in the realm of taxidermy, and in scientific representation more broadly, is not scientific consensus, but more consistent with an artistic approach, like a posteriori recognitions of characteristics unique to artists or artistic movements. Taxidermy consensus happened in hallways and back rooms, with little written down, and the mounts as the most substantial evidence. Nevertheless, taxidermists negotiated the array of stakeholders present—museum administrators, naturalists, collectors, and the public—as they consistently made these mounts both accurate and aesthetically pleasing. And they still make sense when we see them, as they can be repurposed to tell new stories consistent with current understandings of animal lives.
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Hook, George. "True to nature? Fidelity and transformation in Eugene von Guérard’s antipodean landscape paintings." Thesis, Federation University Australia, 2021. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/182577.
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When the leading mid-nineteenth-century landscape artist in Victoria, Eugene von Guérard, was criticised for failing to illustrate nature sublimely, he replied that his “greatest desire” was to “imitate nature” as far as it was “compatible with the effect of the picture.” Later, he asserted that his aim was “to be true to nature as far as possible” in his art. This empirical, science-informed thesis explores what being “true to nature” meant in Guérard’s practice by examining natural features typically illustrated with fidelity, scrutinising features freely transformed for artistic effect, and assessing whether such transformations compromise his aesthetic ideal. The fieldwork-based study addresses a knowledge gap in Australian art history and environmental history by adopting a multi-disciplinary approach. The findings make a significant contribution to understanding what being “true to nature” meant for Guérard, and to determining whether his landscapes are reliable environmental history records. The investigation uses a mixed-method approach, combining qualitative and quantitative techniques. Early in-depth case studies identified faithfully rendered and freely modified features, which informed the development of an innovative survey instrument used to evaluate the fidelity of over a hundred of Guérard’s Antipodean landscapes. The extent to which natural features are faithful or transformed is subjectively assessed by comparing them with his accurate field drawings and modern site photographs taken from his vantage points. The novel reverse use of digital elevation models enabled many of his vantage points at sites to be precisely determined. Statistical analysis of survey data and further case studies leads to the conclusion that Guérard practised selective fidelity to nature. Although no natural feature was totally immune to being modified for artistic effect, many features are typically reproduced with great fidelity to the natural scenery visible at the site. Features significantly altered to create visually engaging or dramatic landscapes are usually found to be true to the natural history of the location, if not necessarily to the view. Exceptions are largely restricted to the composite landscapes that field research uncovered. Finally, the thesis examines whether Guérard’s fidelity practice resonates with particular purported influences, or parallels the practices of international contemporaries who were also renowned for their wilderness paintings.Doctor of Philosophy
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Dunnington, Renee M. "The Nature and Determinants of Presence Among Nursing Students Participating in High Fidelity Human Patient Simulation." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1329957926.
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Quidelleur, Xavier. "Nature et fidelite du message paleomagnetique des inversions et de la paleovariation seculaire." Paris 7, 1994. http://www.theses.fr/1994PA077288.
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Les etudes des inversions et de la paleovariation seculaire du champ geomagnetique representent de formidables contraintes pour notre comprehension de la geodynamo. Cependant l'acquisition d'enregistrements fiables de ces phenomenes est difficile en raison de leur caractere quasi-instantane a l'echelle des temps geologiques. Les processus d'acquisition de l'aimantation dans les sediments en presence d'un champ d'intensite tres faible (identique a celui qui regne lors des inversions) ont ete etudies, a la fois sur des sequences naturelles et grace a des experiences de redeposition artificielle. Les resultats ainsi que les compilations des donnees sur les inversions et la paleovariation seculaire montrent que de nombreux artefacts (lissage, reorientations,) peuvent etre introduits dans l'aimantation des sediments et suggerent surtout que l'alignement des grains magnetiques n'obeit plus a la direction du champ lors d'une inversion. L'existence d'un comportement systematique du champ lors des renversements deduit des caracteristiques des enregistrements sedimentaires est fortement remis en cause par ces resultats et resulterait egalement de la mauvaise distribution des sites d'echantillonnage. L'etude de la derniere inversion enregistree dans des coulees volcaniques de la palma, associee a une determination detaillee de la paleointensite est compatible avec le modele d'un champ transitionnel faible, non dipolaire et sensiblement analogue au champ non dipole actuel, revele a la faveur de la forte decroissance du champ dipolaire dominant
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Baker, Brandon H. (Brandon Herbert). "High fidelity website research : using a browser extension to provide a natural environment." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85404.
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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2013.Cataloged from PDF version of thesis.
Includes bibliographical references (page 59).
People are spending ever increasing amounts of time online. As a result, companies are investing greater amounts of money into online advertising in an effort to influence their behavior. The impact and effectiveness of these ads is still an open question. One possible method of analyzing the effectiveness is through the analysis of clickstream data. However, this data may be difficult to obtain and does not measure behavioral change. Behavioral change is a change in consideration or preference. Surrogate sites can be used to study behavioral change but are difficult and time-consuming to create and do a poor job of mimicking certain classes of sites. This is particularly true of social media sites where the amount of content is impossible to fully reproduce and yet this content is the defining component of the web site. In this thesis, I present a Chrome extension that can be used for conducting high fidelity web site market research. The framework provides the opportunity to measure behavioral change and provide a natural environment almost identical to the actual sites. I detail the implementation of the extension and its use in a web-based media experiment with a sample size of 13,000. Preliminary results and learnings are discussed. Results suggest that use of the extension is feasible and is capable of producing significant changes in consumer consideration.
by Brandon H. Baker.
M. Eng.
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Stott, Nathan Daniel Stott. "Northern Pike abundance and natal fidelity in Lake Erie marshes." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1530892530309374.
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Perin, Marco Aurelio Alves. "Aspectos ecológicos do cervo do-pantanal Blastocerus dichotomus (Illiger, 1815) (Mammalia: cervidae): animais reintroduzidos e ou nascidos na estação ecológica de jataí, nordeste do estado de São Paulo, município de Luís Antônio." Universidade Federal de Juiz de Fora (UFJF), 2010. https://repositorio.ufjf.br/jspui/handle/ufjf/4418.
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O cervo-do-pantanal (Blastocerus dichotomus) é um mamífero de grande porte, sendo considerado o maior cervídeo nativo da America do Sul. Esta espécie encontra-se extinta em 60% da sua área de distribuição histórica que compreendia as várzeas naturais dos grandes rios entre o sul do Amazonas e o norte da Argentina. Apesar de se encontrar ameaçado de extinção, pouco se sabe acerca dos aspectos ecológicos do cervo-do-pantanal. Nesse contexto, o presente estudo, busca investigar a sazonalidade no comportamento espacial desta espécie, como também analisar informações relacionadas à fidelidade de habitat e relações intra-específicas através da sobreposição de áreas núcleo. Para tanto o mesmo contém uma revisão introdutória e dois capítulos abordando os seguintes temas: 1- estudo comparativo para o efeito da sazonalidade entre animais reintroduzidos e ou nascidos na Estação Ecológica de Jataí (EEJ) e animais de população natural, localizados na bacia do rio Paraná; 2- relações espaciais através da sobreposição de áreas núcleo para animais reintroduzidos e ou nascidos na EEJ. Ao todo 39 cervos-do-pantanal marcados sendo 9 da área de reintrodução e 30 da área de população natural, contribuíram para as análises do presente trabalho. Os resultados revelam que ambas as populações estudadas tiveram áreas de vida maiores para machos do que para fêmeas, o que pode ser reflexo das diferenças nas estratégias de utilização do ambiente por indivíduos de ambos os sexos. Para os animais da EEJ as áreas estimadas para a estação chuvosa geralmente foram menores do que as estabelecidas na seca, já para os animais da bacia do rio Paraná observou-se uma inversão na ordem desses valores, ou seja, a média na estação chuvosa foi maior do que a média no período de seca. Tal inversão pode estar relacionada com a dinâmica das características ambientais promovida pela sazonalidade para cada região. A análise de fidelidade de habitat na área de reintrodução revelou uma sobreposição de suas áreas núcleos estimada para as duas estações seca e chuvosa, com fêmeas apresentando porcentagem de fidelidade maior do que machos. A análise envolvendo a sobreposição de áreas núcleo entre os animais desta região revelaram que dois animais, sendo um macho e uma fêmea, sobrepuseram seus núcleos de atividade mesmo quando estimados com concentração média harmônica (30%) de distribuição de utilização das localizações espaciais. Os dados utilizados neste trabalho fazem parte dos resultados obtidos pelo Projeto Cervo-do-Pantanal de Porto Primavera, coordenado pelo NUPECCE (Núcleo de Pesquisa e Conservação de Cervídeos), localizado na Faculdade de Ciências Agrárias e Veterinárias FCAV/UNESP de Jaboticabal, como parte das ações compensatórias referente ao reservatório formado pela usina hidrelétrica Sérgio Motta ou “Porto Primavera”.
Marsh deer (Blastocerus dichotomus) is a large mammal and is considered the largest deer native to South America, this species is extinct in 60% of its historic range that included the natural flood plain of the great rivers between the southern Amazon and northern Argentina. Despite being threatened with extinction, little is known about the ecological aspects of deer marsh. In this context, this study aims to investigate the seasonality in the spatial behavior of this species, but also analyze information related to habitat use and intraspecific relations using overlapping core areas. To this end it contains a review and two introductory chapters covering the following topics: 1 - comparative study for the seasonality effect of reintroduced animals and / or born in the Ecological Station (EEJ) and animals natural population located in the River Paraná; 2 - spatial relations using overlapping core areas to reintroduced animals and / or born in the EEJ. A total of 39 deer-billed and 9 marked the reintroduction area and 30 in the area of natural population, contributed to the analysis of this work. The results show that both populations studied areas of life were higher for males than for females, which may reflect differences in strategies for using the environment of individuals of both sexes. For animals of the EEJ areas estimated for the rainy season were generally lower than those established in the dry season, as for animals of the Paraná River basin showed a reversal in the order of these values, ie, the average during the rainy season was higher than the average during the dry season. This reversal can be related to the dynamics of environmental characteristics promoted by the seasonal pattern for each region. The analysis of habitat use of reintroduction area revealed an overlap in their core areas estimated for both dry and wet seasons, with females showing higher percentage of fidelity than males. The analysis involving the overlap of core areas among the animals of this region revealed that two animals are one male and one female overlapped its core activity even when estimated harmonic mean concentration (30%) of distribution of use of spatial locations. The data used in this work are part of the results obtained by the Project Cervo-do-Pantanal de Porto Primavera, coordinated by NUPECCE (Núcleo de Pesquisa e Conservação de Cervídeos), located at the Faculdade de Ciências Agrárias e Veterinárias FCAV/UNESP de Jaboticabal, as part stock compensation related to the reservoir formed by the Sergio Motta or "Porto Primavera Dam.
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Santos, Jucimara Martins dos. "Estudo das pr?ticas dos freq?entadores do restaurante Nutrinatural na perspectiva etnogr?fica." Universidade Federal Rural do Rio de Janeiro, 2008. https://tede.ufrrj.br/jspui/handle/tede/998.
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Previous issue date: 2008-09-04Not only eat quantities of nutrients and calories to keep the body functioning at an appropriate level: the act of eating understands, too, forms of expression and affirmation of social identities. It involves the selection, the choices, the occasions and rituals that may be organized and classified in order to understand the social dynamics that takes place in the human experience of living day to day. Culture and consumption, thus, processes are interconnected and inseparable and only makes sense to discuss them within a specific cultural scheme. The objective of this case study was to understand the processes that occur in the restaurant that Nutrinatural stimulated, either formally or informally, retention and hence the loyalty of customers . The locus of the research was the natural food restaurant in the self-service kilo, Nutrinatural. To develop the work, we need to contextualize the locus of the study and the city where he falls; describe the structure and ways of operating the restaurant, identifying the situations that lead customers to return to the restaurant; understand the levels of sociability established between customers and employees, customers and the owners of the restaurant. We chose to develop a study with the basic qualitative ethnographic perspective through coday visit to the restaurant. This co-trip took one to two times per week on different days and times. The report was prepared from the participatory observation and informal conversations with customers in time for lunch, for 11 months (May 2007 to March 2008), and through semi-structured interviews with 12 clients who attend the restaurant so continuous, and also with the owners. The results were classified according to the principle of saturation in 05 categories. It has been proved that the keynote to the process of loyalty in the study, is related to the feeling of being in the family is doing Nutrinatural meals in the restaurant. The sociability proved to be as important as the health and flavor.
N?o comemos apenas quantidades de nutrientes e calorias para manter o funcionamento corporal em n?vel adequado: o ato de comer compreende, tamb?m, formas de express?o e afirma??o de identidades sociais. Envolve a sele??o, as escolhas, as ocasi?es e os rituais que podem ser organizados e classificados com vistas a compreender a din?mica social que se desenrola na experi?ncia humana do viver o dia-a-dia. Cultura e consumo, assim, s?o processos interligados e indissoci?veis e s? faz sentido discuti-las dentro de um esquema cultural espec?fico. O objetivo deste estudo de caso foi compreender os processos que ocorrem no Restaurante Nutrinatural que estimularam, formal ou informalmente, a reten??o e, logo, a fideliza??o dos clientes. O l?cus da pesquisa foi o restaurante de comida natural self service a quilo, Nutrinatural. Para desenvolver o trabalho, precisamos contextualizar o l?cus do estudo e o munic?pio em que ele se insere; descrever a estrutura e as formas de funcionamento do restaurante; identificar as situa??es que levam os clientes a retornarem ao restaurante; compreender os n?veis de sociabilidade estabelecidos entre os clientes e os funcion?rios, os clientes e as propriet?rias do restaurante. Optou-se por desenvolver um estudo de base qualitativa com perspectiva etnogr?fica atrav?s da co-visita di?ria ao restaurante. Esta co-visita se deu de uma a duas vezes por semana em dias e hor?rios diferentes. O relato foi elaborado a partir da observa??o participativa e das conversas informais com os clientes nos hor?rios de almo?o, durante 11 meses (maio de 2007 a mar?o de 2008), e atrav?s de entrevistas semi-estruturadas com 12 clientes que freq?entam o restaurante de forma cont?nua, e tamb?m com as propriet?rias. Os resultados foram classificados segundo o princ?pio de satura??o em 05 categorias. Comprovou-se que a t?nica para o processo de fideliza??o, no estudo, est? relacionada ? sensa??o de estar em fam?lia ao se fazer as refei??es no Restaurante Nutrinatural. A sociabilidade mostrou-se t?o importante quanto a saudabilidade e o sabor.
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Santos, Flávia Machado. "The role of HDAC8 in the maintenance of mitotic fidelity." Dissertação, 2020. https://hdl.handle.net/10216/131992.
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Girão, Hugo Miguel Oliveira. "CLASP2 functional domains - role in kinetochore microtubule dynamics and mitotic fidelity." Dissertação, 2017. https://repositorio-aberto.up.pt/handle/10216/110725.
Full textBooks on the topic "Fidelity to nature"
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Brueggemann, Walter, and Tim A. Dearborn. God, Neighbor, Empire: The Excess of Divine Fidelity and the Command of Common Good. Baylor University Press, 2016.
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Brueggemann, Walter. God, Neighbor, Empire: The Excess of Divine Fidelity and the Command of Common Good. Baylor University Press, 2016.
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Brueggemann, Walter, and Tim A. Dearborn. God, Neighbor, Empire: The Excess of Divine Fidelity and the Command of Common Good. Baylor University Press, 2016.
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God, Neighbor, Empire: The Excess of Divine Fidelity and the Command of Common Good. Baylor University Press, 2016.
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Boyd, Brian. Making Adaptation Studies Adaptive. Edited by Thomas Leitch. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199331000.013.34.
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An evolutionary (or “adaptationist”) perspective on adaptation studies offers ways past the “fidelity discourse” that has long vexed adaptation scholars. Biological adaptation forgoes exact fidelity to solve the new problems posed by inevitably changing environments, in a process that is fertile as well as faithful. Artistic adaptation also looks two ways, toward retention or fidelity and toward innovation or fertility. The complex and multiple adaptations and hybridizations of art and nature, of page, stage, screen, and painting in Nabokov’s 1969 novel Ada suggest that the more exactly you know your world, or the world of art, the more you can transform them as you wish. Charlie Kaufman’s 2002 screenplay Adaptation. resembles Ada not only in spotlighting orchids but also in being meta-adaptational, addressing, like Ada, both fidelity within adaptation and the creative fertility to be found in building on prior design but moving beyond fidelity.
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Manthorne, Katherine. Fidelia Bridges: Nature into Art. Lund Humphries Publishers, Limited, 2023.
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Henderson, Andrea. Analysis. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198809982.003.0004.
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This chapter argues that British photography of the 1850s and 60s wedded realism—understood as a commitment to descriptive truthfulness—with formalism, or a belief in the defining power of structural relationships. Photographers at mid-century understood the realistic character of photography to be grounded in more than fidelity to detail; the technical properties of the medium accorded perfectly with the claims of contemporary physicists that reality itself was constituted by spatial arrangements and polar forces rather than essential categorical distinctions. The photographs of Clementina, Lady Hawarden exemplify this formalist realism, dramatizing the power of the formal logic of photography not only to represent the real but to reveal its fundamentally formal nature.
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Vandrei, Martha. ‘Poetry and fiction intermixt with our history’. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198816720.003.0004.
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This chapter focuses on the boundaries between historical and political argument. It discusses the different ways that British antiquity could be politicized by historical writers of the eighteenth century. However, despite this, Boudica maintained a patriotic detachment from party fracases in prose literature. This is compared to her presentation in Richard Glover’s new play of 1753. Aside from questions of patriotism, Glover’s play brings to the fore drama’s relationship to history, and especially the fidelity to human nature that was demanded of both genres. Glover’s inability to accurately capture the spectrum of human emotions attracted extensive criticism, demonstrating another measure of ‘accuracy’ contemporaries applied to historical writing. With regards to Boudica herself, this chapter begins to consolidate the argument that Boudica’s reputation was rather more durable and positive than previous scholars have allowed.
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Anderson, Amanda. Psyche and Ethos. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198755821.001.0001.
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Contemporary culture is saturated with psychological concepts and ideas, from anxiety to narcissism to trauma. While it might seem that concern over psychological conditions is intrinsically oriented toward moral questions about what promotes individual and collective well-being, from the advent of Freudian psychoanalysis in the late nineteenth century up to recent findings in cognitive science, psychology has posed a continuing challenge to traditional concepts of moral deliberation, judgment, and action, all core components of moral philosophy and central to understandings of character and tragedy in literature. Using a range of examples from literature and literary criticism alongside discussions of psychological literature extending from psychoanalysis to recent cognitive science and social psychology, this book explores the nature of psychology’s several challenges to morality and ultimately argues for a renewed look at the persistence of moral orientations toward life and the values of integrity, fidelity, and repair that they privilege. Writings by Shakespeare, Henry James, and George Eliot, and the contributions of British object relations theorists in the post-war period, help to draw out the fundamental ways we experience moral time, the forms of elusive duration that constitute loss, grief, regret, and the desire for amends. While acknowledging the power and necessity of psychological frameworks, Psyche and Ethos aims to restore moral understanding and moral experience to a more central place in our understanding of psychic life and the literary tradition.
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Plested, Marcus. Wisdom in Christian Tradition. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780192863225.001.0001.
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This book provides a comprehensive and sustained treatment of the theme of wisdom in the Christian tradition. Following a survey of the biblical and classical background, it offers a detailed exploration of the theme of wisdom in patristic, byzantine, and medieval theology up to and including Gregory Palamas and Thomas Aquinas in Greek East and Latin West, respectively. Three principal levels of Christian wisdom discourse are distinguished: wisdom as human attainment, wisdom as divine gift, and wisdom as an attribute or quality of God. This journey through Wisdom in Christian Tradition is undertaken in conversation with modern Russian Sophiology, one of the most popular and widely discussed theological movements of our time, characterized by the idea of a primal pre-principle of divine-human unity (‘Sophia’) manifest in both uncreated and created forms. Sophiology is a complex phenomenon with multiple sources and inspirations, including the Church Fathers. Fidelity to patristic tradition became an ever-increasing feature of its self-understanding and self-articulation, above all in the work of Fr Sergius Bulgakov (1871–1944). Sophiology’s ‘unmodern turn’ to patristic sources has, however, long been fiercely contested. This book is the first to thoroughly evaluate the nature and substance of this claim to patristic continuity. The final chapter offers a radical re-thinking of sophiology in line with patristic tradition. This re-oriented sophiology maintains sophiology’s most distinctive insights and most pertinent applications while divesting it of some its more problematic elements
Book chapters on the topic "Fidelity to nature"
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Wirzba, Norman. "From a Partnership to a Fidelity Ethic." In After the Death of Nature, 71–85. New York, NY : Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781315099378-5.
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Akimoto, Youhei, Naoki Sakamoto, and Makoto Ohtani. "Multi-fidelity Optimization Approach Under Prior and Posterior Constraints and Its Application to Compliance Minimization." In Parallel Problem Solving from Nature – PPSN XVI, 81–94. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58112-1_6.
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Korhonen, Tiina, Timo Lindqvist, Joakim Laine, and Kai Hakkarainen. "Training Hard Skills in Virtual Reality: Developing a Theoretical Framework for AI-Based Immersive Learning." In AI in Learning: Designing the Future, 195–213. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09687-7_12.
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AbstractAdvances in virtual reality (VR) technology afford creation of immersive virtual learning environments that simulate real-life learning contexts with increasing fidelity. When supported by sufficiently advanced artificial intelligence (AI)-based tutoring software, such environments may facilitate asynchronous, embodied learning approaches for learning hard, procedural skills in industrial settings – addressing timeliness, accuracy, and scalability issues common in the industry.This chapter reflects on the pedagogical setting of immersive virtual reality-based hard skills training guided by an AI tutor software agent. We examine the interfacing of traditional intelligent tutoring system (ITS) software with an immersive virtual environment. Further, we suggest the philosophies of embodied, embedded, enacted, and extended (4E) cognition as a way to fully consider learner epistemology in a virtual world and to account for and make full use of the unique opportunities afforded by the synthetic nature of the immersive virtual learning environment.To explore possibilities for improved pedagogical approaches, we project the 4E cognition approach into the abovementioned learning context and outline a theoretical framework for a VR-native AI tutor. We then propose VR-native pedagogical principles for such as framework that could inform follow-on research.
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Hummel, Emilie, Claudio Pacchierotti, Valérie Gouranton, Ronan Gaugne, Theophane Nicolas, and Anatole Lécuyer. "Haptic Rattle: Multi-modal Rendering of Virtual Objects Inside a Hollow Container." In Haptics: Science, Technology, Applications, 189–97. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06249-0_22.
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AbstractThe sense of touch plays a strong role in the perception of the properties and characteristics of hollow objects. The action of shaking a hollow container to get an insight of its content is a natural and common interaction. In this paper, we present a multi-modal rendering approach for the simulation of virtual moving objects inside a hollow container, based on the combination of haptic and audio cues generated by voice-coils actuators and high-fidelity headphones, respectively. We conducted a user study. Thirty participants were asked to interact with a target cylindrical hollow object and estimate the number of moving objects inside, relying on haptic feedback only, audio feedback only, or a combination of both. Results indicate that the combination of various senses is important in the perception of the content of a container.
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"Poetic Landscapes and Fidelity to Nature." In Limited Views, 48–55. BRILL, 1998. http://dx.doi.org/10.1163/9781684170241_006.
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Epstein, Hugh. "Facing Nature." In Hardy, Conrad and the Senses, 59–78. Edinburgh University Press, 2019. http://dx.doi.org/10.3366/edinburgh/9781474449861.003.0003.
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This two-part chapter initially places Hardy and Conrad within the context of later nineteenth-century scientific conceptions of ‘Nature’. Both writers are shown in their letters and essays as equivalently committed to facing indifferent nature in a manner similar to leading contemporary scientists and cultural thinkers. However, in their search for ‘underlying’ truths both authors exhibit a powerful strain of subjective idealism which is entwined with the materialist and objective writing largely claimed for them in this study. The second half of the chapter explores the similarities and equivalences in how, with a fidelity to mood and sensation, Hardy and Conrad ‘face nature’ in their richly descriptive writing. Their ‘peculiar relation to realism’ is seen to value a sentience that is more comprehensive in scope and less cerebral than the human consciousness depicted by other nineteenth-century realist writers.
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Stoffregen, Thomas, Randy Pagulayan, L. Smart, and Benoit Bardy. "On the Nature and Evaluation of Fidelity in Virtual Environments." In Virtual and Adaptive Environments, 111–28. CRC Press, 2003. http://dx.doi.org/10.1201/9781410608888.ch6.
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"“Hideous Fidelity to Nature”: John Glover and the Colonized Landscape." In Colonization, Wilderness, and Spaces Between: Nineteenth-Century Landscape Painting in Australia and the United States. Terra Foundation for American Art, 2020. http://dx.doi.org/10.37862/aaeportal.00293.5.
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Kromhout, Melle Jan. "Time and Transience." In The Logic of Filtering, 100–121. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780190070137.003.0005.
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Chapter 4 develops a detailed conceptual analysis of the interrelation between noise and time, to better grasp what it would mean to replace the myth of perfect fidelity with the idea of a noise resonance of sound media. It does so on the basis of a more philosophical reading of the contrast between ideal filters, exemplified by the timeless figure of the sine wave, and the inherently temporal nature of all technological filters. The chapter thereby shows that, contrary to the timeless clarity and purity assumed by the myth of perfect fidelity, the noise resonance of sound media acknowledges the inherently temporal nature of technological operations and the inevitable introduction of noise. As it shapes all recorded sound and music, noise thereby defines the listener’s experience of the multilayered temporality of technologically reproduced sound, emphasizing both its inherent pastness and its continuous flow through the present.
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Prabhala, Sasanka, Subhashini Ganapathy, S. Narayanan, Jennie J. Gallimore, and Raymond R. Hill. "Model-Based Simulation to Examine Command and Control Issues with Remotely Operated Vehicles." In Simulation and Modeling, 199–218. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-198-8.ch007.
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With increased interest in the overall employment of pilotless vehicles functioning in the ground, air, and marine domains for both defense and commercial applications, the need for high-fidelity simulation models for testing and validating the operational concepts associated with these systems is very high. This chapter presents a model-based approach that we adopted for investigating the critical issues in the command and control of remotely operated vehicles (ROVs) through an interactive model-based architecture. The domain of ROVs is highly dynamic and complex in nature. Hence, a proper understanding of the simulation tools, underlying system algorithms, and user needs is critical to realize advanced simulation system concepts. Our resulting simulation architecture integrates proven design concepts such as the model-view-controller paradigm, distributed computing, Web-based simulations, cognitive model-based high-fidelity interfaces and object-based modeling methods.
Conference papers on the topic "Fidelity to nature"
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Benet, Luis, Saúl Hernández-Quiroz, Thomas H. Seligman, Kurt B. Wolf, Luis Benet, Juan Mauricio Torres, and Peter O. Hess. "Fidelity decay of the two-level bosonic embedded ensembles of random matrices." In SYMMETRIES IN NATURE: SYMPOSIUM IN MEMORIAM MARCOS MOSHINSKY. AIP, 2010. http://dx.doi.org/10.1063/1.3537867.
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Bleh, Alexander, Jan Backhaus, and Christian Morsbach. "Investigating the Nature and Invariance of Field Inversion Based on Transition in a Turbine Cascade." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-82917.
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Abstract The generation of data-driven turbulence models inherently requires the use of a sufficiently large database of high-fidelity reference data from DNS or LES. For technically relevant flows, such data is usually not readily available. However, in many cases there is a significant amount of experimental data available, though data points are mostly few and sparse. An approach which aims at deriving modelling errors by evaluating deviations from a given reference data set is the field inversion method proposed in [1]. Our aim is to verify this method as a tool which gives insight in the cause and nature of a given model’s inconsistencies. We therefore apply field inversion on the turbine cascade T106C for different reference data setups. We find, that for the investigated case, field inversion proved to qualitatively give the right hints towards the expected model correction, when only few data points were used as reference.
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Agarwal, Tapish, Iman Rahbari, Jorge Saavedra, Guillermo Paniagua, and Beni Cukurel. "Multi-Fidelity Analysis of Acoustic Streaming in Forced Convection Heat Transfer." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-91548.
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Abstract The behavioral characteristics of thermal boundary layer dictate the relative efficiency of forced convection heat transfer. This research effort is related to the detailed analysis of the temporal evolution of thermal boundary layer under periodic excitations. In presence of oscillations, a distinct thin Stokes layer is formed inside the attached boundary layer, which interacts nonlinearly with the mean flow in the near wall region. This interaction leads to modification of temporally averaged flow fields, commonly known as acoustic streaming. As a result, the aero-thermal wall gradients are modified leading to significant changes in wall shear stress and heat flux. However, the small spatial scales and the inherent unsteady nature of streaming has presented challenges for prior numerical investigations, preventing the identification of optimal parameters. In order to address this void in numerical framework, the development of a three-tier numerical approach is presented. As a first layer of fidelity, a laminar model is developed for fluctuations and streaming flow calculations in laminar flows subjected to travelling wave disturbances. This technique is an extension of the Lin’s method to traveling wave disturbances of various speeds (absent of previously employed assumptions), along with inclusion of energy equation. With low computational cost, this level of abstraction is intended to identify the broad parameter space that yield desirable heat transfer alterations. At the next level of fidelity, 2D U-RANS simulations are conducted across both laminar and turbulent flow regimes. This is geared towards extending the parameter space obtained from laminar model to turbulent flow conditions. As the third level of fidelity, temporally and spatially resolved DNS simulations are conducted to simulate the application relevant compressible flow environment. The exemplary findings indicate that in certain parameter space, both enhancement and reduction in heat transfer can be obtained through acoustic streaming. Moreover, the extent of heat transfer modulations is greater than alterations in wall shear, thereby surpassing Reynolds analogy.
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Huang, Gengxun, Angran Xiao, and Kenneth M. Bryden. "A Virtual Engineering Tool for Product Design Using High Fidelity CFD Analysis Models." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-85404.
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Product design optimization is a complex decision-making process requiring intensive interactions between designers and the designed product. However, most current optimization tools do not support this type of direct interaction. Typically, resolving a converged result with an optimization tool takes a long solution time and high computing cost. However, designers are not involved in the optimization process and cannot control the quality of the so-called optimal result. In this paper, we introduce a virtual engineering design tool that expands the application scope of virtual reality from visualization to interaction and decision support. This design tool allows designers to easily experiment with different product designs using high fidelity CFD solver and observe the effects in an almost real-time manner. This can help designers understand the nature of the product and make superior decisions. Most importantly, the design tool enables designers to control the optimization computing process by selecting superior starting points or changing an obviously unpromising search direction. Hence, by adding human creativity and experience into the optimization process, designers can resolve the design optimization problem more efficiently. A coal pipe design and optimization scenario is presented to demonstrate the efficacy of this virtual engineering design tool. The goal of this tool is to enable a designer to modify the size and shape of a coal pipe to obtain evenly distributed coal at the outlet. In this tool after the initial population was chosen, a standard evolutionary algorithm was used to find the most superior pipe design within a much shorter time.
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Baert, Lieven, Charlotte Beauthier, Michaël Leborgne, and Ingrid Lepot. "Surrogate-Based Optimisation for a Mixed-Variable Design Space: Proof of Concept and Opportunities for Turbomachinery Applications." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43254.
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State-of-the-art turbomachinery design processes rely more and more on the extensive use of numerical simulations. To deal with expensive high-fidelity computations, surrogate-based optimisation (SBO) has become a very interesting approach. In order to cope with industrial cases, the capability to handle variables of a mixed nature appears key. Innovative and auto-adaptive surrogates have been implemented within Minamo that are capable of natively handling the different natures of the design parameters. The present work discusses this mixed-variable SBO framework applied to a multi-profile combinational problem inside the bypass duct. A proof of concept is given followed by a more advanced application. It is demonstrated that the proposed mixed-variable SBO efficiently delivers reliable results and that it offers many opportunities during a conceptual design phase.
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Battistella, Tommaso, Daniel De Los Dolores Paradinas, Albert Meseguer Urbán, and Raul Guanche Garcia. "High Fidelity Simulation of Multi-MW Rotor Aerodynamics by Using a Multifan." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77606.
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During the last decades the offshore wind energy sector has experienced large developments. Despite bottom fixed wind turbines have been widely used, some their limitations have brought to scout and develop concepts based on floating support structures. The behavior of such structures is affected by forces of different nature, so the analysis of these structural systems becomes complex and requires an accurate definition of their dynamics. This is one of the reasons for which the numerical simulations can be highly improved from experimental tests at reduced scale. The interaction between hydrodynamic forces and the structure is investigated experimentally by means of wave tank tests. In these circumstances the correct representation of the aerodynamic forces is not trivial due to laboratory scale law conflicts. These issues can be eased by using hybrid systems. This work aims to describe a hybrid system developed by IH Cantabria. The system is meant to define the most significant aerodynamic loads affecting the dynamic performance of a floating wind turbine by using an aerodynamic model (BEM), while their generation in the scaled model is obtained by using a multi-fan system. This approach successfully satisfies issues related to the scalability of the aerodynamic forces and their variability due to the turbine controller and wind variability. Nevertheless, some shrewdness have to be taken in order to comply with the following matters. The correct representation of the dynamic effects relative to the aerodynamic forces requires high frequency calculations. For this reason some simplifications on the aerodynamic model must be taken. This work explains the criteria used to define the simplifications to be adopted, showing the low impact they have on the tests results. On the present paper it will be demonstrated the capabilities of the multi-fan that was chosen to reproduce the rotor aerodynamics. Moreover, it will evidence the high fidelity of the forces developed by the multi-fan, both in terms of amplitude and reactiveness on the forces fluctuations. The final section will prove the ability of the hybrid system to reproduce with high fidelity and large flexibility the aerodynamic load conditions desired in lab scale wave tank tests.
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Nasti, Adele, Ivan I. Voutchkov, David J. J. Toal, and Andrew J. Keane. "Multi-Fidelity Simulation for Secondary Air System Seal Design in Aero Engines." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-80391.
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Abstract Secondary air system seals in aero engines sit at the intersection between all the major aspects of the physics of the system. Their behavior is affected by the air system, the thermal physics, the effect of flight loads and is highly dependent on the engine component movements, the operating conditions, and the supporting hardware. Due to the number of functional and physical interfaces in the engine, seal design is therefore a highly coupled multi-physics problem and requires multiple iterations during the design process to converge to a solution that meets system requirements and optimizes engine specific fuel consumption. At different stages of the design process, simulation models with different levels of fidelity can be built. Due to the long runtimes of high-fidelity coupled multi-disciplinary models and to the iterative nature of the process, seal design in industry presents significant computational cost challenges, in particular in the phases of the design that require multiple simulation runs. Multi-fidelity computational techniques for surrogate modelling and optimization such as Kriging and co-Kriging have been demonstrated on a number of industrial applications and have the potential to significantly reduce the number of function evaluations for computationally expensive optimization problems, improve the accuracy of the predictions of surrogate models and allow the development of improved simulation strategies for a specific product design. This paper demonstrates the use of multi-fidelity simulation techniques on aero engine secondary air system seal design and shows how these techniques can be used in the context of system, sub-system and component design. This is achieved by combining results from a simple two-dimensional Finite Element Analysis with those from a coupled secondary air system-thermomechanical model. Depending on the stage of the design process and on the specific design decisions being made, the use of computational power in simulation often comes down to a trade-off between reduced overall computational time and improved result accuracy. Multi-fidelity simulation frameworks provide the environment to drive holistic choices on the simulation strategy, reducing the cost of the design and offering agility in the industrial response to market changes or new technologies. Moreover, this methodology establishes an infrastructure for updating the virtual product at each step of the product lifecycle, allowing experimental or service data to feed the system-level simulation models to produce a digital twin.
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Macri, Andrea, and Simone Genovese. "Synergy Between High-Fidelity Dynamic Simulation and AI Surrogate for Robust Design Optimization." In International Petroleum Technology Conference. IPTC, 2022. http://dx.doi.org/10.2523/iptc-22573-ms.
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Abstract It is common practice in the industry to proceed with validation and optimization of any conceptual design of a process or piece of equipment to ensure that its size, configuration, and operation meet all the requirements in terms of production, safety and more. Design methods are mostly initiated by doing steady-state calculations. However, due to the dynamic nature of certain phenomena, a dynamic simulation is often required for a rigorous design. The performance of first-principles dynamic models is limited by the high number and frequency of calculations required for an accurate representation of the process behavior. Especially with large simulations we should not expect to accelerate more than 3 or 5 times faster than real time. A transient of one minute will still take 15-20 seconds to be completed. Running thousands of dynamic scenarios to identify the optimal design using only first-principles dynamic models would require a considerable amount of time. So, when time is a constraint, and time is always a constraint in a project, the optimization effort will inevitably be considered completed after a reduced number of runs resulting in a design which satisfies the process requirements but does not guarantee the lowest possible capital expenditures (CAPEX) and operating expenses (OPEX). Artificial intelligence surrogate models can compute considerably faster, but they require a good amount of data to be trained with and they are less reliable. This paper demonstrates through a real-life example the advantages of combining in the same engineering workflow a rigorous dynamic representation of the process behavior and AI surrogates to identify the best robust and reliable design for an industrial process. The proposed workflow starts with the initial investigation of the design space using a dynamic simulation of the process. The initial data extracted from the first-principles model is then used to train an AI surrogate model that can quickly complete the great majority of the scenarios. Only the final robust optimization of the most promising nominal design cases is then performed using again the first-principles simulation. The design optimization was completed in a fraction of the time that would have been needed by using only first-principles models.
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Miller, David A., and Cameron K. Chen. "Application of Advanced Constitutive Models to the Simulation of Machining." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10842.
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Advanced constitutive models have long been used to describe plastic material response at high strains and high strain rates. These models include the Johnson-Cook, Zerrelli-Armstrong and Material Threshold Stress (MTS) formulations, each with a separate fidelity. The constitutive parameters for these complex models are commonly identified using laboratory techniques such as quasi-static load frames at room and elevated temperatures, Split Hopkinson Pressure Bars (SHPB) in tension and compression, gas guns, and Taylor impact cylinders. However, while the models are able to adequately describe material response under high strain and high strain rate, the loadings are all uniaxial in nature. The ability of these constitutive models and parameters to describe a different dynamic loading event, namely shear dominated machining, has not been thoroughly investigated. This work will develop numerical simulations applying multiple constitutive models with material parameters experimentally determined for fully annealed copper samples. Ultimately, the machining simulation will be compared with high fidelity experimental machining data. The utility of this research extends to the fundamental questions that surround the machining process, such as tool forces, surface damage, precision and quality.
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Ross, Hannah, Matthew Hall, Daniel R. Herber, Jason Jonkman, Athul Krishna Sundarrajan, Thanh Toan Tran, Alan Wright, Daniel Zalkind, and Nick Johnson. "Development of a Control Co-Design Modeling Tool for Marine Hydrokinetic Turbines." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-94483.
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Abstract This report describes the ongoing and planned development of the software package CT-Opt (Current/Tidal Optimization), a control co-design modeling tool for marine hydrokinetic turbines. The commercialization of these turbines has faced significant challenges due to the complex, multidisciplinary nature of their design and the extreme environmental conditions of their operation. This project aims to create a modeling tool that will enable the efficient design of robust, cost-competitive hydrokinetic turbine systems. Rather than using traditional optimization methods, CT-Opt combines multiple models across a range of fidelities to enable coupled optimization of the system design and system controller via a control co-design approach. With this method, the parameters that affect system performance are considered more comprehensively at every stage of the design process. The lowest-fidelity, frequency-domain model called by CT-Opt is RAFT (Response Amplitudes of Floating Turbines), which was originally developed by the National Renewable Energy Laboratory (NREL) to model response amplitudes of floating offshore wind turbines. The highest-fidelity, time-domain model is OpenFAST, which was developed by NREL for land-based and offshore wind turbines. As part of the CT-Opt project, new functionalities will be added to RAFT and OpenFAST to enable the accurate simulation of fixed and floating marine hydrokinetic turbines. In addition to expanding the capabilities of RAFT and OpenFAST, new mid-fidelity models will be developed. These models will be based on RAFT and OpenFAST and will consist of linearized, state-space models derived from the fully coupled, nonlinear OpenFAST equations and derivative function surrogate models that approximate the nonlinear system behavior. Each model will be coupled with controllers to allow control co-design methods to be applied both within models and across fidelity levels, enabling efficient system optimization.
Reports on the topic "Fidelity to nature"
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Ayoul-Guilmard, Q., S. Ganesh, M. Nuñez, R. Tosi, F. Nobile, R. Rossi, and C. Soriano. D5.4 Report on MLMC for time dependent problems. Scipedia, 2021. http://dx.doi.org/10.23967/exaqute.2021.2.005.
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In this report, we study the use of Multi-Level Monte Carlo (MLMC) methods for time dependent problems. It was found that the usability of MLMC methods depends strongly on whether or not the underlying time dependent problem is chaotic in nature. Numerical experiments are conducted on both simple problems, as well as fluid flow problems of practical interest to the ExaQUte project, to demonstrate this. For the non-chaotic cases, the hypotheses that enable the use of MLMC methods were found to be satisfied. For the chaotic cases, especially the case of high Reynolds’ number fluid flow, the hypotheses were not satisfied. However, it was found that correlations between the different levels were high enough to merit the use of multi-fidelity or control-variate approaches. It was also noted that MLMC methods could work for chaotic problems if the time window of analysis were chosen to be small enough. Future studies are proposed to examine this possibility.
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Mandaville, Peter. Worlding the Inward Dimensions of Islam. IIIT, October 2020. http://dx.doi.org/10.47816/01.003.20.
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Muqtedar Khan’s Islam and Good Governance: A Political Philosophy of Ihsan is, above all, an expression of faith.[1] This does not mean that we should engage it as a confessional text — although it certainly is one at some level — or that it necessitates or assumes a particular faith positionality on the part of its reader. Rather, Khan seeks here to build a vision and conception of Islamic governance that does not depend on compliance with or fidelity to some outward standard — whether that be European political liberalism or madhhabi requirements. Instead, he draws on concepts, values, and virtues commonly associated with Islam’s more inward dimensions to propose a strikingly original political philosophy: one that makes worldly that which has traditionally been kept apart from the world. More specifically, Khan locates the basis of a new kind of Islamic politics within the Qur’anic and Prophetic injunction of ihsan, which implies beautification, excellence, or perfection — conventionally understood as primarily spiritual in nature. However, this is not a politics that concerns itself with domination (the pursuit, retention, and maximization of power); it is neither narrowly focused on building governmental structures that supposedly correspond with divine diktat nor understood as contestation or competition. This is, as the book’s subtitle suggests, a pathway to a philosophy of the political which defines the latter in terms of searching for the Good.
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Liese, Eric. High Fidelity Dynamic Simulation of Cycling in a Natural Gas Combined Cycle Power Plant. Office of Scientific and Technical Information (OSTI), February 2016. http://dx.doi.org/10.2172/1845333.
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McPhedran, R., K. Patel, B. Toombs, P. Menon, M. Patel, J. Disson, K. Porter, A. John, and A. Rayner. Food allergen communication in businesses feasibility trial. Food Standards Agency, March 2021. http://dx.doi.org/10.46756/sci.fsa.tpf160.
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Background: Clear allergen communication in food business operators (FBOs) has been shown to have a positive impact on customers’ perceptions of businesses (Barnett et al., 2013). However, the precise size and nature of this effect is not known: there is a paucity of quantitative evidence in this area, particularly in the form of randomised controlled trials (RCTs). The Food Standards Agency (FSA), in collaboration with Kantar’s Behavioural Practice, conducted a feasibility trial to investigate whether a randomised cluster trial – involving the proactive communication of allergen information at the point of sale in FBOs – is feasible in the United Kingdom (UK). Objectives: The trial sought to establish: ease of recruitments of businesses into trials; customer response rates for in-store outcome surveys; fidelity of intervention delivery by FBO staff; sensitivity of outcome survey measures to change; and appropriateness of the chosen analytical approach. Method: Following a recruitment phase – in which one of fourteen multinational FBOs was successfully recruited – the execution of the feasibility trial involved a quasi-randomised matched-pairs clustered experiment. Each of the FBO’s ten participating branches underwent pair-wise matching, with similarity of branches judged according to four criteria: Food Hygiene Rating Scheme (FHRS) score, average weekly footfall, number of staff and customer satisfaction rating. The allocation ratio for this trial was 1:1: one branch in each pair was assigned to the treatment group by a representative from the FBO, while the other continued to operate in accordance with their standard operating procedure. As a business-based feasibility trial, customers at participating branches throughout the fieldwork period were automatically enrolled in the trial. The trial was single-blind: customers at treatment branches were not aware that they were receiving an intervention. All customers who visited participating branches throughout the fieldwork period were asked to complete a short in-store survey on a tablet affixed in branches. This survey contained four outcome measures which operationalised customers’: perceptions of food safety in the FBO; trust in the FBO; self-reported confidence to ask for allergen information in future visits; and overall satisfaction with their visit. Results: Fieldwork was conducted from the 3 – 20 March 2020, with cessation occurring prematurely due to the closure of outlets following the proliferation of COVID-19. n=177 participants took part in the trial across the ten branches; however, response rates (which ranged between 0.1 - 0.8%) were likely also adversely affected by COVID-19. Intervention fidelity was an issue in this study: while compliance with delivery of the intervention was relatively high in treatment branches (78.9%), erroneous delivery in control branches was also common (46.2%). Survey data were analysed using random-intercept multilevel linear regression models (due to the nesting of customers within branches). Despite the trial’s modest sample size, there was some evidence to suggest that the intervention had a positive effect for those suffering from allergies/intolerances for the ‘trust’ (β = 1.288, p<0.01) and ‘satisfaction’ (β = 0.945, p<0.01) outcome variables. Due to singularity within the fitted linear models, hierarchical Bayes models were used to corroborate the size of these interactions. Conclusions: The results of this trial suggest that a fully powered clustered RCT would likely be feasible in the UK. In this case, the primary challenge in the execution of the trial was the recruitment of FBOs: despite high levels of initial interest from four chains, only one took part. However, it is likely that the proliferation of COVID-19 adversely impacted chain participation – two other FBOs withdrew during branch eligibility assessment and selection, citing COVID-19 as a barrier. COVID-19 also likely lowered the on-site survey response rate: a significant negative Pearson correlation was observed between daily survey completions and COVID-19 cases in the UK, highlighting a likely relationship between the two. Limitations: The trial was quasi-random: selection of branches, pair matching and allocation to treatment/control groups were not systematically conducted. These processes were undertaken by a representative from the FBO’s Safety and Quality Assurance team (with oversight from Kantar representatives on pair matching), as a result of the chain’s internal operational restrictions.
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Regan, Jack, and Robin Zevotek. Study of the Fire Service Training Environment: Safety and Fidelity in Concrete Live Fire Training Buildings. UL Firefighter Safety Research Institute, July 2018. http://dx.doi.org/10.54206/102376/wxtw8877.
Full textAbstract:
The goal of fire service training is to prepare students for the conditions and challenges that they face on the fireground. Among the challenges that firefighters routinely face on the fireground are ventilation-controlled fires. The hazard of these fires has been highlighted by several line-of-duty deaths and injuries in which a failure to understand the fire dynamics produced by these fires has been a contributing factor. The synthetic fuels that commonly fill contemporary homes tend to result in ventilation-controlled conditions. While synthetic fuels are common on the residential fireground, the fuels that firefighters use for fire training are more often representative of natural, wood-based fuels. In order to better understand the fire dynamics of these training fires, a series of experiments was conducted in a concrete live fire training building in an effort to evaluate the fidelity and safety of two training fuels, pallets and OSB, and compare the fire dynamics created by these fuels to those created by a fuel load representative of a living room set with furniture items with a synthetic components. Additionally, the effects of the concrete live fire training building on the fire dynamics were examined. The two training fuel loads were composed of wooden pallets and straw, and pallets, straw, and oriented strand board (OSB). The results indicated that the high leakage area of the concrete live fire training building relative to the fuel load prevented the training fuel packages from becoming ventilation-controlled and prevented the furniture package from entering a state of oxygen-depleted decay. The furniture experiments progressed to flashover once ventilation was provided. Under the conditions tested, the wood based fuels, combined with the construction features of this concrete live fire training building, limited the ability to teach ventilation-controlled fire behavior and the associated firefighting techniques. Additionally, it was shown that the potential for thermal injury to firefighters participating in a training evolution existed well below thresholds where firefighter PPE would be damaged.
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Perdigão, Rui A. P. Information physics and quantum space technologies for natural hazard sensing, modelling and prediction. Meteoceanics, September 2021. http://dx.doi.org/10.46337/210930.
Full textAbstract:
Disruptive socio-natural transformations and climatic change, where system invariants and symmetries break down, defy the traditional complexity paradigms such as machine learning and artificial intelligence. In order to overcome this, we introduced non-ergodic Information Physics, bringing physical meaning to inferential metrics, and a coevolving flexibility to the metrics of information transfer, resulting in new methods for causal discovery and attribution. With this in hand, we develop novel dynamic models and analysis algorithms natively built for quantum information technological platforms, expediting complex system computations and rigour. Moreover, we introduce novel quantum sensing technologies in our Meteoceanics satellite constellation, providing unprecedented spatiotemporal coverage, resolution and lead, whilst using exclusively sustainable materials and processes across the value chain. Our technologies bring out novel information physical fingerprints of extreme events, with recently proven records in capturing early warning signs for extreme hydro-meteorologic events and seismic events, and do so with unprecedented quantum-grade resolution, robustness, security, speed and fidelity in sensing, processing and communication. Our advances, from Earth to Space, further provide crucial predictive edge and added value to early warning systems of natural hazards and long-term predictions supporting climatic security and action.