Добірка наукової літератури з теми "Viable validity"
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Статті в журналах з теми "Viable validity":
1
Kennedy, Robert S., and Janet J. Turnage. "Reliability Generalization: A Viable Key for Establishing Validity Generalization." Perceptual and Motor Skills 72, no. 1 (February 1991): 297–98. http://dx.doi.org/10.2466/pms.1991.72.1.297.
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Ho Kim, Won, Jong Gyu Park, and Bora Kwon. "Work Engagement in South Korea." Psychological Reports 120, no. 3 (March 14, 2017): 561–78. http://dx.doi.org/10.1177/0033294117697085.
Анотація:
This study aims to validate Korean versions of the 9-item Utrecht Work Engagement Scale, testing for its factor pattern validity through Exploratory Factor Analysis and Confirmatory Factor Analysis, reliability, and convergent and discriminant validity. The 9-item Utrecht Work Engagement Scale was translated according to the guidelines of the International Test Commission and tested with two Korean samples. First, the Exploratory Factor Analysis found that both two-factor and three-factor solutions were viable options with the first sample. Second, comparison validations of these two solutions were tested by confirming the dimensionality of their structures through the Confirmatory Factor Analyses with the second sample, with the conclusion that the three-factor model solution was the most parsimonious model. Finally, the three-factor model of the 9-item Utrecht Work Engagement Scale was demonstrated to have good discriminant validity and convergent validity, as well as internal consistency of its subscales.
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Ермаков, Станислав, Stanislav Ermakov, Сергей Илькевич, Sergey Ilkevich, Вера Шлапак, and Vera Shlapak. "IT strategies for tourist and service companies: analyzing challenges, approaches, and validity." Services in Russia and abroad 8, no. 3 (May 28, 2014): 106–20. http://dx.doi.org/10.12737/4103.
Анотація:
The article provides an analysis of the major approaches, technologies, and challenges to molding an IT strategy for tourist and service companies. The authors touched upon the central aspects of the role which information technologies play in service and tourist management, service-focused orientation of data systems, methodological issues of service modeling, essential and viable lines of IT penetration, and the economic feasibility of strategic decisions.
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Bamossy, Gary, Marilyn Johnston, and Michael Parsons. "The Assessment of Aesthetic Judgment Ability." Empirical Studies of the Arts 3, no. 1 (January 1985): 63–79. http://dx.doi.org/10.2190/1u13-u2db-0be3-a4fn.
Анотація:
This article presents evidence for reliability and validity for the Aesthetic Judgment Ability (AJA) test. The test is a relatively easy to administer measure of aesthetic ability in judging paintings. Initial findings demonstrate strong evidence for test stability and acceptable internal consistency. It appears to be sensitive in discriminating between groups with clear evidence of criterion-group validity and discriminant validity. The cognitive-developmental perspective of the instrument provides a viable basis for explaining differences in aesthetic judgment. It is potentially useful as a pre-posttest assessment in courses of art education and, in conjunction with other measures, may also be useful in improving understanding of reactions to art.
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Ramalho, Maria Cecília Koehne, and Juliana Barreiros Porto. "Validity Evidence of the Team Psychological Safety Survey." Psico-USF 26, no. 1 (January 2021): 165–76. http://dx.doi.org/10.1590/1413-82712021260114.
Анотація:
Abstract The objective of this study was to adapt and investigate validity evidence for the Team Psychological Safety Survey for Brazil and to test its feasibility to emerge at the team level. A sample of 8,310 female workers answered the scale. Initial analyses indicated the single-factor solution fitness, with Cronbach’s alpha = 0.84. Confirmatory factor analysis model obtained good fitness coefficients, CFI = 0.995, RMSEA = 0.07. Emersion was viable due to group variance identified by and ICC calculations. The hypothesis stated that psychological safety correlates with perceived organizational practices and that differences exist between men and women’s practices. Findings support that the good practices positively related to psychological safety, with differences between gender, while a negative relationship with bad practices was partially confirmed. A quadratic trend was identified between organizational status and psychological safety. Results provide validity evidence for the survey for samples of Brazilian women.
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Nasser, A. M., Y. Tchorch, and B. Fattal. "Validity of serological methods (ELISA) for detecting infectious viruses in water." Water Science and Technology 31, no. 5-6 (March 1, 1995): 307–10. http://dx.doi.org/10.2166/wst.1995.0632.
Анотація:
Detection of cultivable enteric viruses in environmental water samples in tissue culture is time consuming and expensive. Moreover, some important enteric viruses grow very slowly (Hepatitis A virus) or do not grow as yet (Norwalk) in tissue culture. Therefore, sensitive serological and molecular methods have been developed to simplify and speed the detection of viruses in environmental samples. This study was conducted to test the reliability of serological methods to monitor the presence of viable viruses in natural waters. The study was performed with poliovirus purified in CsCl gradients and impure virus. Poliovirus 1 either purified or impure was seeded in raw wastewater, groundwater and phosphate buffered saline (PBS) and incubated for 20 days at 4°C, 20°C and 30°C. Virus survival was monitored by a nylon filter A-ELISA and plaque-assay in BGM cells. In all water samples at 4°C, no die-off was observed neither by A-ELISA nor by plaque-assay. In wastewater and groundwater at 20°C and 30°C, greater die-off was observed with A-ELISA than with plaque-assay. Purified poliovirus was undetectable by the A-ELISA after two days of incubation at 20°C in wastewater and groundwater, whereas under the same conditions, only 2log10 reduction were observed in the titer of poliovirus 1. The data of this study have shown that in all cases, a positive test by A-ELISA was also positive by the plaque-assay. Therefore, a positive result of A-ELISA indicates the presence of viable virus in natural waters.
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Bhagwat, Ranjit, Shalonda Kelly, and Michael C. Lambert. "Exploratory Factor Analysis of African Self-Consciousness Scale Scores." Assessment 19, no. 1 (March 9, 2011): 65–76. http://dx.doi.org/10.1177/1073191111398314.
Анотація:
This study replicates and extends prior studies of the dimensionality, convergent, and external validity of African Self-Consciousness Scale scores with appropriate exploratory factor analysis methods and a large gender balanced sample ( N = 348). Viable one- and two-factor solutions were cross-validated. Both first factors overlapped significantly and were labeled “Embracing African Heritage.” The second subscale of the two-factor solution was labeled “Refusal to Deny African Heritage.” Only the structural validity of the first factor of the two-factor solution was fully consistent with prior findings. Partial evidence of convergent validity was found for all factors, and only the second factor of the two-factor solution received external validity support. Implications for usage of the African Self-Consciousness Scale and recommendations for further investigation are discussed.
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Stinson, Lisa F., Michelle L. Trevenen, and Donna T. Geddes. "The Viable Microbiome of Human Milk Differs from the Metataxonomic Profile." Nutrients 13, no. 12 (December 13, 2021): 4445. http://dx.doi.org/10.3390/nu13124445.
Анотація:
Bacteria in human milk contribute to the establishment of the infant gut microbiome. As such, numerous studies have characterized the human milk microbiome using DNA sequencing technologies, particularly 16S rRNA gene sequencing. However, such methods are not able to differentiate between DNA from viable and non-viable bacteria. The extent to which bacterial DNA detected in human milk represents living, biologically active cells is therefore unclear. Here, we characterized both the viable bacterial content and the total bacterial DNA content (derived from viable and non-viable cells) of fresh human milk (n = 10). In order to differentiate the living from the dead, a combination of propidium monoazide (PMA) and full-length 16S rRNA gene sequencing was used. Our results demonstrate that the majority of OTUs recovered from fresh human milk samples (67.3%) reflected DNA from non-viable organisms. PMA-treated samples differed significantly in their bacterial composition compared to untreated samples (PERMANOVA p < 0.0001). Additionally, an OTU mapping to Cutibacterium acnes had a significantly higher relative abundance in PMA-treated (viable) samples. These results demonstrate that the total bacterial DNA content of human milk is not representative of the viable human milk microbiome. Our findings raise questions about the validity of conclusions drawn from previous studies in which viability testing was not used, and have broad implications for the design of future work in this field.
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Kim, Hyung-Kwan, Yong-Jin Kim, Sung-A. Chang, Song-Yi Kim, Ho-Joon Jang, Whal Lee, Jin-Shik Park, et al. "Clinical Validity of Longitudinal Pre-Ejectional Myocardial Velocity for Identifying the Transmural Extent of Viable Myocardium." Circulation Journal 71, no. 12 (2007): 1904–11. http://dx.doi.org/10.1253/circj.71.1904.
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Costa, Cicero Luciano Alves, Nadia Cristina Valentini, Emanuel Moita Do Nascimento, and Herbert Ugrinowitsch. "Validity and reliability of the volleyball serve accuracy-test." Journal of Human Sport and Exercise 19, no. 2 (April 1, 2024): 570–78. http://dx.doi.org/10.55860/jj2b1p83.
Анотація:
This study aimed to examine the content, face, and sensitive validity, and test-retest reliability of a volleyball overhand serve accuracy-test. Four experts – university professors evaluated the content validity; 50 volleyball coaches, teachers, and athletes were enrolled in the face validity. Thirty-three undergraduate students (18 experienced and 15 novices) participated in the study to assess the test capability to detect different performance levels. The sensitive validity was examined by comparing differences in the serving accuracy among experience levels using the t-test for independent samples. A cluster analysis (hierarchical cluster) was conducted using the between-groups linkage method and the Euclidean quadratic distance measure. The test-retest reliability was analysed using intraclass correlation coefficients and the standard error. Satisfactory results were found for experts’ agreement regarding the test’s accuracy and content validity. Face validity was adequate regarding clarity, pertinence, and applicability (78% to 86% of agreement). A high degree of test-retest reliability was observed for both novices (ICC = 0.81) and experienced (ICC = 0.84) participants; experienced group (p = .001) had higher means. The volleyball serve accuracy-test is a viable alternative to assess beginners’ performance in a teaching-learning context.
Дисертації з теми "Viable validity":
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Decroix, Charlotte. "Du développement d’une intervention complexe en santé des populations à sa mise à l’échelle : aspects conceptuels et méthodologiques des études de viabilité, applications dans le champ de la petite enfance." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0007.
Анотація:
Les enjeux de santé publique auxquels nos systèmes de santé et éducatif ont à faire face nécessitent des transformations qui passent notamment par le développement d’interventions en santé des populations (actions, programmes, organisations, politiques). Ces interventions sont généralement considérées comme complexes. La complexité est un enjeu majeur pour l’évaluation des interventions. Si les devis expérimentaux sont les références pour la recherche clinique, leur contrôle des facteurs contextuels pour renforcer la validité interne des études, obère la validité externe de ces recherches. Il convient d’aller au-delà de ces designs centrés sur l’efficacité, afin de comprendre les mécanismes et processus de l’intervention. Cette approche doit permettre d’examiner la mise en oeuvre et les conditions de routinisation, de transférabilité et de mise à l’échelle de l’intervention, dans le monde réel. Dans cette perspective, Chen a proposé un changement de paradigme en développant le modèle de la validité intégrative. Dans une approche ascendante, celui-ci reconnait 3 types de validité : la validité interne, la validité externe et la validité viable. La validité viable s’intéresse à l’intégration des interventions dans le système dans lequel elle vise à être déployées, hors d’un contexte de recherche. La validité viable correspond à la perception des parties prenantes quant à savoir si une intervention est utile, appropriée, faisable, abordable, adaptée et évaluable, dans le monde réel (Chen, 2010). Cette thèse s’intéressait à la pertinence de l’approche ascendante pour les interventions en santé des populations et au concept de viabilité : Quelle est la place de la viabilité dans le développement et l’évaluation d’interventions complexes en santé des populations ? En quoi l’étude de la viabilité est un préalable pour envisager la pérennisation, le transfert et la mise à l’échelle de l’intervention ? Quels sont les critères (et dimensions) à considérer pour analyser la viabilité ? L’objectif était d’analyser la viabilité d’interventions innovantes à partir du vécu de l’intervention par les parties prenantes. Une stratégie d’étude de cas multiples, mobilisant des méthodes qualitatives, suivant plusieurs niveaux d’analyse imbriqués a été choisie. Les trois cas ont été sélectionnés au regard de points de similitudes (ex : intervention dans le champ de la petite enfance) et de contrastes. Les résultats étaient en convergence avec les postulats de Chen quant à la pertinence d’adopter une approche ascendante en recherche et de s’intéresser à la validité viable. Elle proposait de décrire la viabilité comme le potentiel d’une intervention innovante : (i) à s’intégrer dans les projets, programmes, organisations, politiques existantes afin de former un tout cohérent en termes d’objectif, de missions des parties prenantes, de leviers d’interventions et de moyens ; et (ii) à faire sens pour les parties prenantes de l’intervention dans le monde réel. Ce « faire sens » dépendait de l’adéquation entre la perception des parties prenantes de l’intervention innovante et du système dans lequel elles évoluent. Les résultats ont permis d’éprouver les critères de viabilité tels que mis à jour par Chen en 2023 et de les décliner en dimensions. Ils ont mis en avant l’interdépendance de la perception de ces critères par les parties prenantes qu’ils soient liés à la nature ou à la faisabilité de l’intervention. En outre la viabilité est située : il s’agissait de s’intéresser aux conditions de viabilité plus que de proposer une vision binaire de la viabilité. Différents déterminants de la viabilité ont été identifiés : les composantes du changement organisationnel et les niveaux de l’approche socio-écologique. Finalement, cette thèse a permis d’interroger la définition d’une intervention probante sous le prisme de la viabilité. Des recherches complémentaires sont en cours pour interroger le concept dans une perspective interdisciplinairePublic health challenges facing our healthcare and education systems call for transformations that include the development of population health interventions (actions, programs, organizations, policies). These interventions are generally considered to be complex. Complexity is a major issue for the evaluation of interventions. While experimental designs are the gold standard for clinical research, their control of contextual factors to reinforce the internal validity of studies obviates the external validity of such research. It's essential to go beyond these efficacy-focused designs, in order to understand the mechanisms and processes of the intervention. This approach should make it possible to examine the implementation and conditions of routinization, transferability and scaling-up of the intervention, in the real world. To this end, Chen proposed a paradigm shift by developing the integrative validity model. This bottom-up approach recognizes 3 types of validity: internal validity, external validity and viable validity. Viable validity concerns the integration of interventions into the system in which they are to be deployed, outside a research context. Viable validity corresponds to stakeholders' perception of whether an intervention is useful, suitable, practical, affordable and evaluable, in the real world (Chen, 2010). This PhD explored the relevance of the bottom-up approach to population health interventions and the concept of viability: What is the place of viability in the development and evaluation of complex population health interventions? In what way is the study of viability a prerequisite for considering the sustainability, transfer and scaling-up of interventions? What criteria (and dimensions) should be considered when analyzing viability? The aim was to analyze the viability of innovative interventions based on stakeholders' experience of the intervention. A multiple-case study strategy, mobilizing qualitative methods and following several interlocking levels of analysis, was chosen. The three cases were selected on the basis of similarities (e.g.: intervention in the field of early childhood) and contrasts. The results converged with Chen's postulates on the relevance of adopting a bottom-up approach to research and focusing on viable validity. They suggested describing viability as the potential of an innovative intervention: (i) to integrate with existing projects, programs, organizations and policies to form a coherent whole in terms of objective, stakeholder missions, intervention levers and inputs; and (ii) to make sense to the intervention's stakeholders in the real world. This "making sense" depended on the fit between the stakeholders' perception of the innovative intervention and the system in which they are evolving. The results made it possible to test the viability criteria as updated by Chen in 2023 and to decline them into dimensions. They highlighted the interdependence of stakeholders' perceptions of these criteria, whether related to the substance or feasibility of the intervention. Moreover, viability is situated: the aim was to focus on the conditions of viability rather than to propose a binary vision of viability. Various determinants of viability were identified: the components of organizational change, the interlocking levels of the socio-ecological approach. Finally, this research questioned the definition of a evidence-based intervention through the prism of viability. Further research is underway to examine the concept from an interdisciplinary perspective
Книги з теми "Viable validity":
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Gragl, Paul. The Epistemological Necessity of Legal Monism. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198796268.003.0003.
Анотація:
This chapter depicts and defends monism in its positivist-epistemological manifestation (as envisaged by the Vienna School of Jurisprudence’s pure theory of law) as the most viable concept to theorize the relationship between different bodies of law. After a short introduction to the (neo-)Kantian sources of Kelsen’s theory, the concept of the Grundnorm and the hierarchy of norms will be discussed in detail. Subsequently, it will be argued why legal monism under the primacy of international law is the only avenue through which the law can be meaningfully cognized and the concept of legal validity be taken seriously. The last part of the chapter is dedicated to a defence of legal monism against two of its staunchest critics, namely H.L.A. Hart and Joseph Raz.
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Simon, Gleeson, and Guynn Randall. Part II The US Resolution Regime, 5 Fundamentals of Resolution Authority. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780199698011.003.0005.
Анотація:
This chapter looks at the history and fundamental elements of resolution authority as it has been developed and used in the United States. The goal of resolution authority in the United States has been to deal with failed banks and other financial institutions in a manner that stems runs, avoids contagion and preserves critical operations, the same goal as deposit guarantee schemes. First introduced in the United States in 1933 as part of the deposit insurance programme for banks, resolution authority was originally little more than the method by which the Federal Deposit Insurance Corporation honoured its obligations to insured depositors before evolving to its current state. Resolution authority, as conceived in the United States, has two principal components—the core resolution powers and the claims process. The core resolution powers consist of the authority to quickly separate the assets and viable parts of a failed bank's business (the good bank) from its capital structure liabilities (the bad bank), so that its critical operations are preserved and runs and contagion are avoided. It is virtually always completed in the United States over a weekend commonly known as resolution weekend. The claims process involves determining the validity and amount of the claims of individual holders of capital structure liabilities in accordance with ordinary principles of due process and distributing the residual value of the good bank to such holders in satisfaction of their claims. The claims process typically takes at least six to nine months to be completed in order to comply with ordinary principles of due process for potential claimants.
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Krauter, Cheryl. Taking Care of Each Other. Edited by Cheryl Krauter. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190636364.003.0007.
Анотація:
This chapter discusses the acceptance of professional competence that allows for compassion toward oneself as well as toward other professionals. This chapter addresses how to recognize distress in others, offer support and assistance to those in distress, validate the setting of appropriate boundaries—for one’s self and for others—and reduce the conflict that arises between work and family life. This chapter promotes dialogue between providers by challenging the stigma that providers should be wary of sharing their emotional concerns and by supporting an open dialogue between colleagues as well as advocating for the request for help and support. A primary focus is on open communication and teamwork, and readers are supported to create a viable plan that supports clarity in cancer navigation.
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Zamir, Tzachi. Second Crossroad. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190695088.003.0006.
Анотація:
The idea of knowledge through action is discussed and appraised, as well as the manner whereby it introduces a further (potentially irreconcilable) difference between philosophy and literature. Knowledge-through-action is discussed in relation to arguments within religious aesthetics—by Karl Rahner and von Balthasar’s “Theo-drama”—and also to overlapping claims within philosophical aesthetics—by Angela Leighton and Roger Scruton’s version of Heidegger’s “presencing” through poetry. The chapter attempts to formulate a viable point at which Milton’s form of acting as knowing can be accepted by a philosopher. Paradigms of knowledge that encompass and validate more than propositional knowledge are examined (and, for the most part, rejected) as potential meeting points with Milton. A distinction between knowledge and meaningfulness is proposed, and the notion of purchase is developed.
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Garcia, Gabriel Pereira. O habeas corpus como instrumento de tutela dos direitos da personalidade. Brazil Publishing, 2020. http://dx.doi.org/10.31012/978-65-5861-179-0.
Анотація:
This monograph analyzes the legal institute of habeas corpus in the Brazilian civil process, in particular, to survey and validate the hypotheses in which the writ procedure can be used in the protection of the rights of the personality, understood here as those powers that guarantee the safety physical, moral and intellectual of the human person. It identifies the damages resulting from the affront to the rights of the personality as well as the legal instruments suitable for the effective judicial provision. It analyzes the appropriateness and adequacy of the habeas corpus legal instrument for the protection of the essential and basic aspects of people, their dignity and personality as fundamental attributes, to providing greater effectiveness and speed in judicial protection in exceptional situations that demand the satisfaction of the law material urgently. Indirectly, the problem of slowness and lack of effective in procedural protection is faced here, presenting habeas corpus as a viable solution in those cases of risk and harm to the person.
Частини книг з теми "Viable validity":
1
Shepherd, Dean A., and Holger Patzelt. "A Lean Approach to Entrepreneurial Theorizing." In Entrepreneurial Theorizing, 169–206. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24045-4_6.
Анотація:
AbstractWe offer lean scholarship as an approach to developing a portfolio of high-quality, high-impact papers. Indeed, our scholarly identity is typically generated and reinforced by our portfolio of published papers than by any one paper. By lean scholarship, we refer to iterative experimentation, stakeholder engagement, and collective learning in generating a portfolio of papers. Lean scholarship starts with an entrepreneurial mindset and involves creating a minimum viable paper, exploring its validity, and adding a plausible paper to one’s portfolio. Lean scholarship requires managing the portfolio by periodically deciding whether to persevere, pivot, or terminate each paper. Therefore, this chapter moves away from our emphasis on a single paper to think more broadly about the entrepreneurial process of constructing and managing a portfolio of entrepreneurship studies
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Göcke, Lutz, and Robin Weninger. "Business Model Development and Validation in Digital Entrepreneurship." In Digital Entrepreneurship, 71–85. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53914-6_4.
Анотація:
AbstractEvery venture is developed under high uncertainty and causal ambiguity. A large majority of digital startups leverage the lean startup approach to validate the attractiveness of their venture, to reduce avoidable investments of scarce resources, and to structure the venturing process. Digital entrepreneurs highlight that prioritization and the definition of MVPs are two challenges that entrepreneurs face when applying the lean startup approach. We provide support on these particular challenges through a structured approach—the venture pyramid—to (in)validate digital business models in the face of high uncertainty. Furthermore, we map different types of digital business models with patterns of minimum viable products to inspire digital entrepreneurs and scientists alike. To illustrate our thoughts, we have developed two case studies of German startups that applied a process of rigorous iteration and learning to their venturing processes.
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Göcke, Lutz, and Philip Meier. "Development and Validation of Platform Businesses in Digital Entrepreneurship." In Digital Entrepreneurship, 87–102. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53914-6_5.
Анотація:
AbstractPlatform business models grow in relevance in nearly every industry by an optimization of transaction costs or a significant increase in innovativeness. Many entrepreneurs choose platform business models to create and capture value. Although the benefits of platform business models demonstrably have immense growth potential, these business models are also accompanied by unique challenges for startups in their early stages of development. In this chapter, we aim to discuss the specific challenges that digital entrepreneurs face when validating their platform business model concept. We also develop a processual model, based on the venture pyramid (discussed in Chap. 10.1007/978-3-030-53914-6_4 of this book) to validate the critical assumptions of platform business models. Based on three case studies of early-stage startups, we shed light on the dynamics of testing platform business models and discuss different approaches to develop a minimum viable platform.
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Sievert, Alexander, Alexander Witzki, and Marco Michael Nitzschner. "Reliability and Validity of Low Temporal Resolution Eye Tracking Systems in Cognitive Performance Tasks." In Human Performance Technology, 1063–76. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8356-1.ch052.
Анотація:
Eye tracking experiments are an important contribution to human computer interaction (HCI) research. Eye movements indicate attention, information processing, and cognitive state. Oculomotor activity is usually captured with high temporal resolution eye tracking systems, which are expensive and not affordable for everyone. Moreover, these systems require specific hard- and software. However, affordable and practical systems are needed especially for applied research concerning mobile HCI in everyday life. This study examined the reliability/validity of low temporal resolution devices by comparing data of a table-mounted system with an electrooculogram. Gaze patterns of twenty participants were recorded while performing a visual reaction and a surveillance task. Statistical analyses showed high consistency between both measurement systems for recorded gaze parameters. These results indicate that data from low temporal resolution eye trackers are sufficient to derive performance related oculomotor parameters and that such solutions present a viable alternative for applied HCI research.
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Mayakestan, Nandakumar, and Gopinathan Sarvanathan. "Using Narrative Inquiry to Explore “Wicked Problems” in Educational Leadership in the Anthropocene." In Educational Research in the Age of Anthropocene, 144–67. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-5317-5.ch007.
Анотація:
A highly contested issue in educational leadership research is the place of narrative inquiry to study school leadership practice. While the study of narratives has had long epistemological roots in the works of Dewey, Bruner, Clandinin, and Connelly, its potential for revealing the human condition and providing deeper insights into critical issues like power, inequity, social justice, and oppression is often underestimated. Moreover, the method has also drawn much debate for its limitations ranging from its highly reflexive nature to issues of validity and reliability of “storied” experiences. This chapter outlines some arguments for the use of narrative inquiry and suggests a nuanced and expanded understanding of the method as a viable approach to study “wicked” problems in the age of Anthropocene. The chapter also aims to inspire further discussions of how narrative inquiry could be further re-conceptualized to study educational leadership in the anthropogenic era.
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Aston, Joshua N. "Narco-analysis." In Torture Behind Bars, 62–70. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190120986.003.0003.
Анотація:
This chapter mainly focuses on the use of narco-analysis tests on accused/suspects during the investigation and its legality in the country. Although tests like narco-analysis do not have any legal validity, as the responses or confessions from a semi-conscious person are not admissible in court, these tests are still undertaken by the police during investigations. The tests are not 100 per cent accurate. The chapter discusses about the process of the narco-analysis test and discusses its legality under the provisions of the Constitution of India and various other legislations enforced in India, such as the Code of Criminal Procedure, 1973 (CrPC) and Indian Evidence Act, 1872. Further, it critically assesses the narco-analysis test in terms of its adverse effects on one’s health, the accuracy of the test, violation of rights, and mental torture. The narco-analysis test may be a useful and viable tool for investigation and to find information in a potential case rather than using third-degree or custodial violence by the police, but it should also not violate the right of the accused as guaranteed by the Constitution.
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Arnold, Michael L. "Natural hybridization: Definitions and history." In Natural Hybridization and Evolution, 3–10. Oxford University PressNew York, NY, 1997. http://dx.doi.org/10.1093/oso/9780195099744.003.0001.
Анотація:
Abstract Several terms used in this book need clear definitions. These include hybridization, hybrid, and hybrid zone. Harrison (1993) has discussed the various definitions of the term hybridization that have been used in scientific literature. Each of these relates to levels of divergence between the individuals that undergo reproduction. The extremes of these definitions are crosses between genetically distinct individuals, and between individuals from different species (Harrison, 1993). The former is frequently used by plant and animal breeders and the latter by evolutionary biologists. Harrison’s (1990) definition includes crosses between “individuals from two populations, or groups of populations, which are distinguishable on the basis of one or more heritable characters.” I have adopted this definition with the following modifications. First, natural hybridization involves matings that occur in a natural setting—this excludes cases of experimental hybridizations. Second, I will consider those crosses that are successful in producing some viable F1 progeny that possess some level of fertility. This latter restriction reflects my desire to focus on the potential ongoing evolutionary effects from hybrid generations past the initial F1. However, it is important to point out that almost all cases of natural hybridization result in at least a few viable individuals with some measure of fertility (e.g., Grant, 1963). Thus, when an author states that inviable or infertile offspring are produced, it is usually meant that the offspring are fewer in number or are less fertile relative to progeny from crosses between genetically more similar individuals. The reduction in levels of viability and fertility has led most authors to discount natural hybridization as an evolutionarily important process. This conclusion ignores the importance of rare events in evolution and is contradicted by actual cases where unlikely hybrid events have led to diversification (Arnold and Hodges, 1995a). The validity of the arguments presented in this book do not depend on hybrids being relatively common in nature. However, it is also apparent that natural hybridization does not usually lead to 100% inviability or infertility.
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Hill, Selena, Christopher Barr, Maggie Killington, James McLoughlin, Rory Daniels, and Maayken van den Berg. "The Design and Development of MOVE-IT: A System for Remote Vestibular and Oculomotor Assessment in People with Concussion." In Studies in Health Technology and Informatics. IOS Press, 2021. http://dx.doi.org/10.3233/shti210025.
Анотація:
Background: Dizziness is one of the most common symptoms following concussion and requires a thorough vestibular assessment. However, due to limited tools and evidence on remote vestibular assessment and intervention, people unable to attend in-person consults cannot receive effective care. Objective: This study aims to describe the design and development process of MOVE-IT. MOVE-IT is a mobile phone application with an associated head mount device and clinician dashboard which aims to enhance vestibular assessments and intervention via telehealth by enabling clinicians to clearly observe client’s eye movements. Methods: This study used a Living Labs methodology including the use of a scoping review, user engagement, multi stakeholder engagement, real-life settings, and co-creation. MOVE-IT was developed in three phases: Exploration, Experimentation and Evaluation. This paper describes the Exploration and Experimentation process. Exploration included a scoping review, focus group and consultation interviews. Experimentation included the co-creation of a minimum viable product in a real-life setting with regular feedback from multi-stakeholders. Outcome: MOVE-IT includes three components: a mobile phone application, head mount device and clinician dashboard. MOVE-IT aims to enhance the use of telehealth for vestibular assessments by: (1) using the head mount device to enable video recording of client’s eyes during assessment, (2) allowing clinicians to view client’s eye movements via the clinician dashboard whilst (3) a support person assists in the physical aspect of the vestibular assessment by a step-by-step guided video in the mobile application. Conclusion: The Living Lab method was a useful strategy for developing MOVE-IT. MOVE-IT meets all predefined functionality requirements and potentially provides a solution for remote vestibular assessment and intervention in the concussion population. The Evaluation phase will be conducted next to test usability, reliability and validity of MOVE-IT.
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Momani, Alaa M., Wael M. Yafooz, and Mamoun M. Jamous. "The Influence of Enjoyment Factor Toward the Acceptance of Social Commerce." In Research Anthology on E-Commerce Adoption, Models, and Applications for Modern Business, 1061–72. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8957-1.ch053.
Анотація:
Social commerce is a new extension of electronic commerce that involves using social media in the online shopping process. Although the adoption of social technologies was studied in several researches, it is still needed to investigate the specific characteristics of social commerce and the affecting factors on its acceptance. This article verifies the influence of the enjoyment factor on the adoption of social commerce through applying a questionnaire sample allocated to 282 Jordanian social media users from those who are interested in online shopping. The research model is developed to validate the impact of enjoyment, in addition to some other factors, on the behavioral intentions to adopt and use social commerce. The results show that the enjoyment is a key factor on accepting social commerce. The research model indicates that it is viable and has a good power in explaining the variance in the behavioral intentions to adopt and use social commerce.
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R, Delshi Howsalya Devi, Thanapal P, Chithra G. K, and R. Partha Sarathi. "CHALLENGES AND APPLICATIONS OF INTERNET OF THINGS ON SUPPLY CHAIN MANAGEMENT." In Futuristic Trends in Computing Technologies and Data Sciences Volume 2 Book 18, 286–96. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2023. http://dx.doi.org/10.58532/v2bs18p5ch4.
Анотація:
One of the best ways for businesses to give exceptional customer service is to make efficient supply chain management a strategic goal. Supply chain management (SCM) stands the process of actively managing supply chain actions in order to provide a competitive advantage over the long term and maximise the value of the customer. Sensors in IoT devices assess certain aspects of theworld around them, such as, temperature, location movement, handling, humidity, movement speed, light levels and other environmental parameters. GPS and other technologies are used for Internet of Things devices. It can track, validate products and deliveries in the supply chains. IoT in supply chain management is becoming increasingly important, and it has the potential to create a strategic competitive advantage. IoT-powered supply chain management is gaining traction as a viable solution to supply chain management's control and visibility issues, while also adding value and solving other challenges. It can also keep track of improving quality control across the storage conditions for the products and supply chain. Supply chain components must be prepared to place their belief in wearables makers to protect their data in order for wearables to continue to benefit the supply chain. The problems and applications of IoT on supply chain management are surveyed and summarised in this study
Тези доповідей конференцій з теми "Viable validity":
1
Raj Kumar, Ashwin, Seda Bilaloglu, Preeti Raghavan, and Vikram Kapila. "Grasp Rehabilitator: A Mechatronic Approach." In 2019 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/dmd2019-3242.
Анотація:
Grasping and manipulation are critical for many activities of daily living. However, current approaches to grasp rehabilitation do not measure coordination of fingertip forces nor provide metrics for feedback to the user as an aid in regaining fingertip coordination. This paper presents a low-cost mechatronic approach to design and develop a portable and commercially viable grasp rehabilitation device. The performance of the newly developed grasp rehabilitator is compared with an existing research-grade grasping device on a grip and lift task. The results suggest that the newly developed grasp rehabilitator can provide key force measurements that are equivalent to the ones provided by the research-grade grasping device, indicating its validity and potential viability for rehabilitation.
2
Kloucha, Chakib K., Bassem S. El Yossef, Imad Al Hamlawi, Muzahidin M Salim, Wiliem Pausin, Anik Pal, Hussein Mustapha, Soumil Shah, and Ahmad Naim Hussein. "Machine Learning Model for Drilling Equipment Recommender System for Improved Decision Making and Optimum Performance." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211731-ms.
Анотація:
Abstract The oil industry, in its constant strive to maximize gains out of operational data is constantly exploring new horizons where to combine the latest advances in data science and digitalization, into the areas where key decisions to drive economical and operational decisions reside with an aim at optimizing the capital expenditure through sound decision making. High volume operational data has been recognized as hiding many opportunities where the captured details these repositories that include real time logs and bit run summaries, provide a clear opportunity where to extract insights to support optimized decisions in terms of equipment selection to achieve the desired operational objectives. Current possibilities within data science have opened the possibilities through viable solutions, which in this case, aims at providing advise on which equipment in terms of BHA and Bits to select, that would yield the desired outcome for a drilling run. The whole exercise being based on evidence gathered from previous runs where the details for the equipment, the relevant well characteristics, and the observed rates of penetration and the used parameters, are taken into consideration to provide the optimum combination to be implemented in new runs. The present study describes the methodology in terms of data utilization, data science method development and solution deployment, with the associated issues that had to be addressed in order to provide a viable solution in terms of data utilization, technical validity and final user utilization, as well as a series of recommendations to be addressed within any such endeavors to assure the value addition.
3
Moayed, Farman, Kendall Cribelar, and Annette Smith. "Sustainability of Human Resources: A Heuristic Approach." In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1001576.
Анотація:
Introduction: Companies increasingly recognize the effects of socially and environmentally responsible decisions and investment in the sustainability of their businesses. Skilled and well-trained employees (human resources) are like valuable and scares resources and should be managed in sustainable manners. Ergonomics and Human Factors (E/HF) field can help management identify potential problem areas and improve the working conditions to minimize waste such as turnover, injury, absenteeism, etc. The employees’ performance can be used as an indicator of sustainability. Objective: To develop a heuristic model to assess the sustainability of human resources by utilizing micro-, meso, and macro-ergonomics factors, which can be used as diagnostic tool for improvement.Method: A survey questionnaire was developed and distributed among two different organization (a hospital and a manufacturing company). Three different indices of E/HF were calculated as well as performance index. The correlation between indices were studied and three-dimensional plots were created to evaluate the validity of the heuristic model.Finding: There were insignificant correlation between the E/HF indices and performance index in both organization, however, the responses from the manufacturing company matched the heuristic model better than hospital. Conclusion: The heuristic model developed in this study appeared to be viable to assess the sustainability of human resources. Additional work or different methods need to be implemented to validate the results. It seems that the survey should be custom designed for different industry since different factors and elements can affect the sustainability of human resources in each industry.
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Bighamian, Ramin, Andrew T. Reisner, and Jin-Oh Hahn. "A Control-Oriented Model of Blood Volume Response to Hemorrhage and Fluid Resuscitation." In ASME 2015 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/dscc2015-9847.
Анотація:
This paper presents a control-oriented model of blood volume response to hemorrhage and fluid resuscitation that can be potentially utilized in closed-loop control of fluid resuscitation. A unique characteristic of the proposed model is that it is built to ensure structural parsimony while retaining physiological transparency. To accomplish this characteristic, blood volume regulation in the body to external perturbations of hemorrhage and fluid resuscitation was modeled as a low-order control system in which the fluid transfer between blood and interstitial fluid is governed by a proportional-integral controller. This in essence resulted in a minimal model with four parameters to be adapted to each individual. The validity of the proposed model was tested using data available in the literature. The results indicated that the proposed model was able to reproduce the blood volume response to hemorrhage and fluid resuscitation with high fidelity: on the average, the prediction error was only 1.53 ± 11.5 %, thus strongly supporting our claim that it can be used as viable basis for the design of closed-loop fluid resuscitation controllers.
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Forrest, S. R., P. E. Burrows, Z. Shen, V. Bulovic, D. M. McCarty, and M. E. Thompson. "Current Conduction and Electroluminescence Mechanisms in Molecular Organic Light Emitting Devices." In Organic Thin Films for Photonic Applications. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/otfa.1995.tua.2.
Анотація:
Electroluminescence (EL) from vacuum deposited organic molecular heterojunction (HJ) devices can potentially yield red, green and blue light at levels of brightnesses and efficiencies adequate for viable flat panel displays1. However, to date, there has been little detailed analysis of the origin of EL and the current conduction mechanisms in these novel devices. The spatial distribution of EL in HJ devices using tris-(8-hydroxyquinoline) aluminum (Alq3) as the light emitting layer has been measured and shown to occur within a few hundred Ångstroms of the organic HJ.2 This was assigned to excitons created at the organic HJ subsequently diffusing into the bulk organic layer before radiatively recombining. Charge injection mechanisms in such structures, however, were not elucidated. In polymeric OLEDs, tunneling3 into the conduction bands of the organic material has been invoked to explain the observed current-voltage (I-V) and EL characteristics. However, given the low carrier mobilities characteristic of many organic materials and the difficulties in measuring and interpreting band offset data, the validity of simple band structure and tunneling models remains unclear.
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McDonald, Dale B., and Joseph O. Falade. "Parameter Identification in Ecological Systems via Discontinuous and Singular Control Regimes." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86063.
Анотація:
Policy decisions regarding commercial harvesting of aquatic species by (typically governmental) regulatory agencies are often based in part upon field data, simulation results, and mathematical models. Regulatory agencies may limit or expand seasons, determine total harvest allowed, increase or decrease licensure fees, and raise or lower taxation rates in response to the state of the ecological system. Ultimately, the regulatory agency uses such measures to ensure viable populations in an attempt to balance ecosystem health and benefits for society. Such decisions impact commercial fishing ventures affecting the nature of harvesting efforts and their intensity. Conclusions drawn from mathematical models of ecological systems, and derived simulation results which affect this reality are highly dependent upon the validity of information available. Knowledge or estimates of critical parameters such as intrinsic growth rate, carrying capacity, etc. and dynamic variables such as biomass levels dictate the usefulness of analytical and numerical analyses. The purpose of this treatment is to illustrate that control laws applied to mathematical models of species dynamics may be used to discern estimates of parameters that inherently exist in such models in an effort to provide more valuable information upon which to base policy decisions. Dynamic models of both single-species evolution and predator-prey interactions are examined.
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Eltaher, Ayman, Jason Sun, and Paul Jukes. "Design of Suction Piles for Deepwater HPHT Subsea Pipelines." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57417.
Анотація:
Thermal expansion management of high pressure and high temperature (HPHT) pipelines using buckle initiators and anchors has proven to be a viable approach for projects in the deepwater Gulf of Mexico. In this study, using suction piles as pipeline anchors is discussed, as suction piles represent the most commonly used anchoring technology in deepwater. Considerations and issues particular to the pipeline anchoring application are discussed and possible solutions are presented. In this study, the traditional suction pile analysis and design procedures (based on simple calculations and/or the finite element method) are discussed, and modifications and simplifications are proposed to suit the new application. In particular, applying the anchor loads at the mudline level, long-term loading and the absence of significant axial loading are examples of issues and particulars that are common to pipeline anchoring that would either simplify analysis or put restrictions on the validity of current suction pile design procedures. Different types of connections to pipelines and subsea structures are also proposed and addressed. This study extends the applicability of suction piles from mooring applications to thermal buckle and walking management for HPHT pipeline applications. It presents solutions to connection and design issues particular to suction piles as anchoring means for HPHT pipeline thermal management.
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Singh, Abhinav S., and Conrad S. Tucker. "Investigating the Heterogeneity of Product Feature Preferences Mined Using Online Product Data Streams." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47439.
Анотація:
This work investigates the “must have” and “deal breaker” product feature preferences expressed by users of online platforms (e.g., customer review websites or social media networks) in order to inform designers of product features that should be investigated during the next iteration of a product’s launch. Existing design literature highlights the risks of aggregating group preferences, and suggest that design teams should instead, focus on maximizing enterprise value by optimizing the attributes of a product. However, design knowledge about products and product attributes are influenced by market information, which is dynamic and difficult to acquire. The use of online product review platforms has emerged in the design community as a viable source of product data acquisition and demand model prediction. However, as the heterogeneity of product preferences increases, so does the complexity of understanding which product attributes should be optimized by the design team to maximize enterprise value. These challenges are exacerbated in product preference acquisition techniques that rely on mining online data, as the customer is typically unknown to the designer, which limits the amount of follow up data available to be mined. By quantifying the degree of “must have” and “deal breaker” product preferences expressed online, designers will be able to understand what product-features should be omitted from next generation product design optimization models (i.e., “deal breaker” features) and what product features should be considered (i.e., “must have” features). A case study involving customer electronics mined from online customer review websites is used to demonstrate the validity of the proposed methodology.
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Ramnath, Satchit, Payam Haghighi, Ji Hoon Kim, Duane Detwiler, Michael Berry, Jami J. Shah, Nikola Aulig, Patricia Wollstadt, and Stefan Menzel. "Automatically Generating 60,000 CAD Variants for Big Data Applications." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97378.
Анотація:
Abstract Machine learning is opening up new ways of optimizing designs but it requires large data sets for training and verification. While such data sets already exist for financial, sales and business applications, this is not the case for engineering product design data. This paper discusses our efforts in curating a large Computer Aided Design (CAD) data set with desired variety and validity for automotive body structural compositions. Manual creation of 60,000 CAD variants is obviously not viable so we examine several approaches that can be automated with commercial CAD systems such as Parametric Design, Feature Based Design, Design Tables/Catalogs of Variants and Macros. We discuss pros and cons of each method and how we devised a combination of these approaches. This hybrid approach was used in association with DOE tables. Since the geometric configurations and characteristics need to be correlated to performance (structural integrity), the paper also demonstrates automated workflows to perform FEA on CAD models generated. Key simulation results can then be associated with CAD geometry and, for example, processes using machine learning algorithms for both supervised and unsupervised learning. The information obtained from the application of such methods to historical CAD models may help to understand the reasoning behind experiential design decisions. With the increase in computing power and network speed, such datasets together with novel machine learning methods, could assist in generating better designs, which could potentially be obtained by a combination of existing ones, or might provide insights into completely new design concepts meeting or exceeding the performance requirements.
10
White, M., and A. I. Sayma. "Investigating the Effect of Changing the Working Fluid on the Three-Dimensional Flow Within Organic Rankine Cycle Turbines." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56106.
Анотація:
For small and micro scale (< 50 kWe) organic Rankine cycle (ORC) systems to be commercially viable, systems are required that can operate efficiently over a range of operating conditions. This will lead to the high volume, low cost production that is critical to improve the current economy of scale, and reduce system costs. This requirement will inevitably mean utilising the same system within a range of different applications and may also require the same turbine to operate in different systems where the working fluid may change. Under these circumstances it is therefore important to develop suitable models that can determine the off design performance of these turbines. This will help to understand how the performance of existing ORC turbines responds to such changes. This topic is also of interest when considering retrofitting existing systems with more modern working fluids, which meet current environmental regulations. Recent work by the authors has developed a turbine design model and produced a candidate radial turbine design. Furthermore a modified similitude theory has been developed and validated, which can be used to predict turbine performance following a change in working fluid. This paper extends this analysis to a wider array of working fluids, and in addition to comparing the important performance parameters such as mass flow rate and turbine efficiency, a detailed comparison of the resulting flow field, blade loading distributions and velocity triangles is also presented. Predictions made using the modified similitude theory are compared to steady and unsteady 3D RANS CFD simulations completed using the commercial solver ANSYS CFX. Real fluid properties are accounted for by generating property tables using REFPROP. By comparing these important flow features the validity of the modified similitude model can be examined to a much greater extent.
Звіти організацій з теми "Viable validity":
1
Matthew, Gray. Data from "Winter is Coming – Temperature Affects Immune Defenses and Susceptibility to Batrachochytrium salamandrivorans". University of Tennessee, Knoxville Libraries, January 2021. http://dx.doi.org/10.7290/t7sallfxxe.
Анотація:
Environmental temperature is a key factor driving various biological processes, including immune defenses and host-pathogen interactions. Here, we evaluated the effects of environmental temperature on the pathogenicity of the emerging fungus, Batrachochytrium salamandrivorans (Bsal), using controlled laboratory experiments, and measured components of host immune defense to identify regulating mechanisms. We found that adult and juvenile Notophthalmus viridescens died faster due to Bsal chytridiomycosis at 14 ºC than at 6 and 22 ºC. Pathogen replication rates, total available proteins on the skin, and microbiome composition likely drove these relationships. Temperature-dependent skin microbiome composition in our laboratory experiments matched seasonal trends in wild N. viridescens, adding validity to these results. We also found that hydrophobic peptide production after two months post-exposure to Bsal was reduced in infected animals compared to controls, perhaps due to peptide release earlier in infection or impaired granular gland function in diseased animals. Using our temperature-dependent infection results, we performed a geographic analysis that suggested that N. viridescens populations in the northeastern United States and southeastern Canada are at greatest risk for Bsal invasion. Our results indicate that environmental temperature will play a key role in the epidemiology of Bsal and provide evidence that temperature manipulations may be a viable Bsal management strategy.
2
Tanjore, Deepti, Eric Sundstrom, Stephen Hubbard, Mona Mirisiaghi, Todd Pray, Rocco Mancinelli, and David Smernoff. Analysis and fermentation base-lining to validate cyanobacterial-based polysaccharide production as a viable feedstock for bio-product development (CRADA Final Report). Office of Scientific and Technical Information (OSTI), February 2017. http://dx.doi.org/10.2172/1888252.
3
Tzonev, Nick. PR-396-163702-R02 Petroleum Pipeline Polymer Absorption Sensor Leak Detection Cable Phase 2. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), October 2021. http://dx.doi.org/10.55274/r0012183.
Анотація:
The goal of this Project is to validate and commercialize Syscor's External Leak Detection System (ELDS) cable and wireless sensor node. Syscor's ELDS cable system will be able to detect leaks smaller than 5 barrels (bbl) and will be suitable for deployment in new construction projects as well as existing underground pipelines. The capability of Syscor's ELDS to be plowed in place at a safe distance from the pipeline differentiates the solution from competing approaches as it is more economically viable for existing pipelines. The proposed leak detection cable will be able to recognize leaks that would previously remain unnoticed for long periods of time, reducing the release of chemicals into the environment and remediation costs to pipeline operators.