Bibliografie tematiche / Validité de structure

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Letteratura scientifica selezionata sul tema "Validité de structure"

Autore: Grafiati
Pubblicato: 31 agosto 2024
Ultima modifica: 7 luglio 2025

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Articoli di riviste sul tema "Validité de structure"

1

Gendre, Francis, François Chaghaghi, Bernard Muller, and Elisabeth Léo-Dupont. "Validité synthétique et choix professionnel." L’Orientation scolaire et professionnelle 15, no. 4 (1986): 279–93. http://dx.doi.org/10.3406/binop.1986.1603.

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Abstract (sommario):
La validité synthétique a été proposée dans le cadre de la sélection professionnelle, en lieu et place du modèle classique. Elle consiste à valider les caractéristiques individuelles, non plus vis-à-vis d’un critère global de réussite à l’intérieur d’une profession donnée, mais vis-à-vis de composantes du travail au travers de toutes les professions où elles sont présentes. Cette étude présente l’adaptation de ce concept à la situation d’orientation professionnelle. 673 garçons et 755 filles, testés alors qu’ils avaient 15-16 ans et étaient dans leur dernière année d’école obligatoire, ont été retrouvés 6 ans après. Le métier exercé à ce moment a été qualifié sur 5 dimensions : intelligence scolaire, intelligence technique, routine, social, artistique. Cinquante facteurs descriptifs, appartenant aux structures de l’environnement et des sphères cognitive, affective, évaluative de l’individu, ont été mis en relation (régression multiple pas à pas) avec les 5 dimensions des métiers, pour chaque sexe et chaque niveau scolaire, ainsi que pour l’ensemble des garçons et l’ensemble des filles. Les résultats ont montré que, sauf en ce qui concerne la structure évaluative (intérêts professionnels), où apparaissent des constantes, les relations trouvées sont le plus souvent conditionnelles du sexe et du niveau scolaire. Les caractéristiques des métiers sont mieux prédites chez les secondaires que chez les primaires, chez les garçons que chez les filles, indiquant chez ces dernières une moins grande liberté de choix. Les applications possibles du concept de validité synthétique ont été évoquées (méthode fenêtre).
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2

Geoffrion, Steve, Charles-Édouard Giguère, Mélissa Fortin, Christophe Fortin, and Stéphane Guay. "Validation de la version française canadienne du Perception of Prevalence of Aggression Scale auprès d’un échantillon d’intervenants en protection de la jeunesse1." Revue de psychoéducation 46, no. 1 (2017): 145–74. http://dx.doi.org/10.7202/1039685ar.

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Abstract (sommario):
Objectif. L’objectif de cette étude est d’évaluer la validité de construit de la version française de l’échellePerception Of Prevalence of Aggression Scale (POPAS), un questionnaire auto-rapporté mesurant l’exposition à la violence au travail commise par la clientèle du milieu de la santé et des services sociaux.Méthode. Un échantillon de 310 intervenants en protection de la jeunesse est utilisé afin de confirmer la structure interne à quatre facteurs de l’instrument. À défaut de confirmer cette structure, un modèle d’équation structurelle exploratoire est utilisé. Les facteurs retenus sont soumis aux tests d’alpha de Cronbach qui permettent d’évaluer leur cohérence interne. Ils sont corrélés avec la version française duPosttraumatic Stress Disorder Checklist Scale(PCLS) et du nombre de jours d’absence du travail causé par la violence afin d’évaluer la validité convergente. Il sont également corrélées avec leFelt Accountability(FA) afin d’évaluer la validité divergente. Des analyses de comparaison en fonction du lieu de travail permettent d’explorer la validité de critère.Résultats. L’analyse factorielle confirmatoire ne confirme pas la structure à quatre facteurs du POPAS. L’équation structurelle exploratoire valide une structure à trois facteurs : « violence verbale », « violence physique » et « violence envers soi-même ». Les deux premiers possèdent une bonne cohérence interne. Les corrélations positives entre ces deux facteurs et le PCLS, ainsi qu’entre ces deux facteurs et le nombre de jours d’absence appuient la validité convergente du POPAS. Toutefois, l’absence de corrélation significative entre le dernier facteur et le PCLS, et entre ce facteur et le nombre de jour d’absence n’appuient pas cette convergence. L’absence de corrélation des facteurs avec le FA appuie la validité divergente du POPAS. Les différences observées selon les environnements de travail attestent aussi de la validité de critère.Discussion. La validité de construit de la version française canadienne du POPAS suggère que l’outil permet d’évaluer la fréquence subjective de différentes formes de violence au travail vécues par les intervenants en protection de la jeunesse. Il offre ainsi une alternative aux données officielles (c.-à-d. déclaration d’incidents à l’employeur) qui reflètent peu la réalité de ces travailleurs compte tenu de la sous-déclaration des incidents de violence dans ce milieu.
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3

Villeneuve, Laurence, Gilles Trudel, Michel Préville, Luc Dargis, Richard Boyer, and Jean Bégin. "Dyadic Adjustment Scale: A Validation Study among Older French-Canadians Living in Relationships." Canadian Journal on Aging / La Revue canadienne du vieillissement 34, no. 1 (2014): 26–35. http://dx.doi.org/10.1017/s0714980814000269.

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Abstract (sommario):
RÉSUMÉL’objectif principal de cette étude est de décrire la structure factorielle et la validité de l’Échelle d’Ajustement Dyadique (ÉAD) chez 895 aînés canadiens francophones vivant en couple. Il s’agit de la première étude du genre réalisée auprès de cette population. Une analyse factorielle confirmatoire a été réalisée à partir de la modélisation d’équation structurale. Les résultats supportent le modèle hiérarchique du questionnaire de Spanier (1976). Les résultats montrent également des indices de validité et de fidélité satisfaisants mise à part pour la sous-échelle Expression Affective qui présente un coefficient Alpha de Cronbach plus faible. Les résultats indiquent également une bonne validité de l’échelle à partir des indices de validité convergente et discriminante. Enfin, une discussion abordant les considérations à prendre en compte pour l’utilisation du questionnaire chez les couples âgés est formulée.
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4

Thomson, Matthew, Deborah J. MacInnis, and C. Whan Park. "Les liens attachants : Mesurer la force de l'attachement émotionnel des consommateurs à la marque." Recherche et Applications en Marketing (French Edition) 20, no. 1 (2005): 79–88. http://dx.doi.org/10.1177/076737010502000105.

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Abstract (sommario):
Les recherches existantes suggèrent que les consommateurs peuvent être très fortement attachés émotionnellement à des objets de consommation, y compris à des marques. Cependant, aucune échelle pour l'instant ne mesure la force de l'attachement émotionnel des consommateurs vis-à-vis des marques. Nous développons une telle échelle dans les études 1 et 2. L'étude 3 concerne la validité interne de l'échelle et sa structure dimensionnelle. L'étude 4 concerne la validité convergente en prenant en compte quatre indicateurs comportementaux de l'attachement. L'étude 5 montre la validité discriminante de l'échelle, mettant en lumière que l'échelle se différencie des mesures de satisfaction, d'implication et d'attitude envers la marque. Cette dernière étude examine également la validité prédictive de l'échelle, montrant qu'elle est positivement associée aux indicateurs de l'engagement et de l'investissement. Les limites de l'échelle et les conditions nécessaires à son application sont également discutées.
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5

Ahmed, Tamer, Afshin Vafaei, Emmanuelle Belanger, Susan P. Phillips, and Maria-Victoria Zunzunegui. "Bem Sex Role Inventory Validation in the International Mobility in Aging Study." Canadian Journal on Aging / La Revue canadienne du vieillissement 35, no. 3 (2016): 348–60. http://dx.doi.org/10.1017/s0714980816000404.

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RÉSUMÉCette étude, en utilisant différentes méthodes d’analyse des facteurs, a examiné la structure de mesure de l’Inventaire des rôles sexués de Bem (IRSB). La plupart des études antérieures sur la validité ont appliqué analyse factorielle exploratoire (AFE) d’examiner l’IRSB. Il s’agissait d’évaluer les propriétés psychométriques et la validité de la construction de la forme courte IRSB comprenant 12 articles dans un échantillon administré à 1,995 personnes âgées de la vague 1 de l’Initiative internationale de la mobilité en viellissement (IIMV). Nous avons utilisé l’alpha de Cronbach pour évaluer la fiabilité et la cohérence interne et une analyse factorielle confirmatoire (AFC) afin d’évaluer les propriétés psychometriques. AFE a révélé un modèle comprenant trois facteurs, qu’on a confirmé par l’AFC, puis ceci est comparé avec le modèle structurel initial de deux facteurs. Les résultats ont révélé qu’une solution à deux facteurs (instrumentalité-expression) a montré satisfaisante validité conceptuelle et un ajustement supérieur aux données, par rapport à la solution à trois facteurs. La solution à deux facteurs confirme différences attendues entre les sexes chez les personnes âgées. L’IRSB composé de 12 articles fournit un instrument bref, psychométrique et fiable dans les échantillons internationaux des personnes âgées.
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6

Savard1, Claudia, Yvan Lussier, and Stéphane Sabourin. "Échelle auto-rapportée de psychopathie de Levenson : adaptation française et validation." Criminologie 47, no. 2 (2014): 263–93. http://dx.doi.org/10.7202/1026736ar.

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Abstract (sommario):
L’échelle auto-rapportée de psychopathie de Levenson (LSRP ; Levenson, Kiehl & Fitzpatrick, 1995) est un instrument visant à évaluer les traits de personnalité psychopathiques au sein de la population générale. Il conceptualise la psychopathie en deux facteurs distincts, mais interreliés, appelés psychopathie primaire et secondaire. La validité de l’instrument dans son format original est bien démontrée, mais aucune donnée n’est disponible en ce qui a trait à l’adaptation francophone de l’instrument. L’étude vise donc à évaluer la structure factorielle et la validité convergente de la version française auprès d’une population de jeunes adultes. Un échantillon de 2529 participants âgés de 15 à 26 ans remplissent l’échelle auto-rapportée de psychopathie, le NEO-FFI et répondent aussi à des questions sur leurs habitudes à l’égard de la consommation de substances psychoactives. Les résultats des analyses factorielles exploratoires et confirmatoires montrent que l’adaptation francophone respecte la structure en deux facteurs, avec des coefficients de saturation et de consistance interne pour les deux échelles se comparant à ceux de la version originale anglaise. Les modèles de mesure pour les hommes et les femmes se sont avérés partiellement invariants ; les hommes obtiennent des résultats supérieurs à ceux des femmes aux échelles de psychopathie primaire et totale. Enfin, le LSRP démontre de bons indices de validité convergente.
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7

Landry, Michel, Joël Tremblay, Louise Guyon, Jacques Bergeron, and Natacha Brunelle. "La Grille de dépistage de la consommation problématique d’alcool et de drogues chez les adolescents et les adolescentes (DEP-ADO) : développement et qualités psychométriques." Articles 3, no. 1 (2005): 20–37. http://dx.doi.org/10.7202/010517ar.

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Résumé La Grille de dépistage de la consommation problématique d’alcool et de drogues chez les adolescents (DEP-ADO) a été créée pour répondre aux besoins des milieux de pratique québécois. Cet article rapporte les résultats de deux études portant sur les qualités psychométriques de la DEP-ADO. Une première étude a révélé que l’outil était pertinent et possédait une très bonne validité d’apparence, tant auprès des intervenants que des jeunes. Une seconde étude a été menée auprès de 673 élèves de 14 à 17 ans provenant de trois écoles secondaires du Québec et de 64 jeunes inscrits dans des centres de réadaptation en toxicomanie pour évaluer la structure factorielle, la fidélité et la validité de l’outil. Les résultats indiquent que les qualités psychométriques de la DEP-ADO sont nettement satisfaisantes et se comparent avantageusement à celles constatées auprès des autres outils de repérage de la consommation abusive de substances psychoactives chez les adolescents (validité de construit, cohérence interne, fidélité test-retest et inter modes de passation, validité critériée concomitante). Fait intéressant, les analyses factorielles ont permis d’identifier, en plus d’un facteur global, trois facteurs dont le sens clinique est bien identifiable (consommation d’alcool et de cannabis, consommation d’autres drogues, conséquences de la consommation de substances psychoactives). Tout en confirmant de façon globale la validité et la fidélité de la version originale, l’étude a également permis d’y apporter des améliorations et d’ouvrir des perspectives nouvelles sur l’utilisation qui peut en être faite.
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8

Orpana, Heather, Caryn Pearson, Raelyne L. Dopko, and Lucie Kocum. "Validation du questionnaire de l'Échelle de satisfaction des besoins intrinsèques des enfants chez les jeunes canadiens : propriétés psychométriques, validité critérielle et analyse factorielle confirmatoire reposant sur une approche multitraits-multiméthodes." Promotion de la santé et prévention des maladies chroniques au Canada 39, no. 1 (2019): 26–35. http://dx.doi.org/10.24095/hpcdp.39.1.03f.

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Abstract (sommario):
Introduction L'Échelle de satisfaction des besoins intrinsèques des enfants (Children’s Intrinsic Needs Satisfaction Scale ou questionnaire CINSS), fondée sur la théorie de l’autodétermination, sert à mesurer l’autonomie, la compétence et l'appartenance sociale à l’école, à la maison et avec les pairs. Nous avons vérifié sa structure factorielle et sa validité critérielle chez les jeunes canadiens à l’aide de données de l’Enquête canadienne sur le tabac, l’alcool et les drogues chez les élèves (ECTADE). Méthodologie Nous avons analysé les données de l’ECTADE de 2014-2015 afin de mettre en évidence la validité convergente et discriminante et la variance liée à la méthode. Nous avons mené une analyse factorielle confirmatoire (AFC) reposant sur une approche multitraits-multiméthodes (MTMM) afin de tenir compte de la structure conceptuelle de la mesure. Nous avons établi sa validité critérielle grâce aux corrélations entre les concepts à l'étude, les comportements prosociaux et problèmes de comportement et les scores aux sous-échelles du questionnaire CINSS. Enfin, nous avons examiné les écarts moyens dans les scores aux sous-échelles du questionnaire CINSS entre les répondants ayant déclaré qu’ils avaient commis des actes d’intimidation ou qu’ils en avaient été victimes d’une part et les répondants ayant fait état d'aucune intimidation d’autre part. Résultats Les analyses de corrélations ont montré que, de manière générale, les corrélations étaient plus fortes entre variables se rapportant à des besoins ou des contextes appariés et plus faibles entre variables mesurant des besoins et des contextes différents. Le coefficient alpha de Cronbach pour les sous-échelles des besoins et des contextes était élevé : α = 0,77 pour l’autonomie, α = 0,85 pour la compétence et α = 0,79 pour l'appartenance sociale. L'AFC reposant sur une approche MTMM a montré que le modèle était bien ajusté aux données et qu’il ne nécessitait aucune modification. La validité critérielle a été établie par les corrélations entre les sous-échelles du questionnaire CINSS et les concepts étudiés ou par les écarts moyens dans les scores à ces sous-échelles entre groupes de répondants. Conclusion L'Échelle de satisfaction des besoins intrinsèques des enfants (questionnaire CINSS) s’est révélée solide sur le plan de la cohérence interne, de la validité factorielle et de la validité critérielle dans notre échantillon d’élèves canadiens. Mesurer la santé mentale positive chez les jeunes canadiens est essentiel pour obtenir l'information pertinente nécessaire aux activités de promotion de la santé mentale au Canada.
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Baylé, Franck J., Marie Chantai Bourdel, Hervé Caci, et al. "Structure factorielle de la traduction française de l'échelle d'impulsivité de Barratt (BIS-10)." Canadian Journal of Psychiatry 45, no. 2 (2000): 156–65. http://dx.doi.org/10.1177/070674370004500206.

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Même si le concept d'impulsivité demeure sujet à controverses, de nombreuses d'approches ont été tentées pour mesurer cette dimension. Seules les mesures psychométriques possèdent une bonne validité consensuelle et semblent aujourd'hui opérationnelles en routine. Barratt a élaboré la plus ancienne échelle mesurant spécifiquement l'impulsivité. De nombreuses révisions ont permis d'en améliorer la validité. Nous avons traduit en français sans difficultés majeures la dixième version validée de cette échelle (Barratt Impulsivity Scale [BIS-10]) et exploré sa structure factorielle. Nous l'avons assortie d'un autoquestionnaire évaluant l'anxiété. Nous avons recruté au sein de la population générale 280 sujets âgés en moyenne de 36,9 ans (18 à 79 ans). L'âge des sujets exerce une influence faible mais significative sur les scores d'impulsivité. L'analyse en composantes principales (ACP) montre que les 9 premiers facteurs expliquent 55,6% de la variance. Une nouvelle ACP sur ces facteurs de premier ordre permet d'extraire 3 facteurs de second ordre. Ceux-ci correspondent bien au regroupement proposé par Barratt. Nos résultats confortent ceux de l'analyse initiale de l'échelle qui n 'ont pu être reproduits par la suite. Il s'agit, à notre connaissance, de la première traduction française d'un instrument qui évalue spécifiquement l'impulsivité et dont la structure factorielle a été étudiée dans la population générale.
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ABDELHAFFAR, W., W. NCIBI, and R. FAKHFAKH. "VALIDATION TRANSCULTURELLE D'UN QUESTIONNAIRE EVALUANT LE STRESS LIE AU DIABETE EN ARABE DIALECTAL TUNISIEN." EXERCER 34, no. 192 (2023): 156–62. http://dx.doi.org/10.56746/exercer.2023.192.156.

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Introduction. Le diabète provoque une réaction émotionnelle négative, appelée « stress lié au diabète », liée au fardeau de vivre avec une maladie chronique. Selon la littérature, les niveaux élevés de stress sont associés à une mauvaise observance et à un mauvais équilibre diabétique. Plusieurs sociétés savantes recommandent de dépister ce stress régulièrement à l’aide d’échelles valides. Il n’existe pas d’échelle validée en Tunisie évaluant cette entité. Objectif. Réaliser une validation transculturelle de l’échelle Problem areas in diabetes 5 (PAID-5) en Tunisie. Méthode. Étude de validation transculturelle. Cent patients atteints de diabète de type 2, consultant une structure publique de première ligne en Tunisie, ont été inclus. La validation incluait : traduction et rétrotraduction, vérification de la validité d’apparence, de contenu, de fiabilité et de construit. Le validateur externe utilisé était la Depression anxiety stress scale (DASS). Résultats. La validité d’apparence et de contenu de la PAID-5 était adéquate. La PAID-5 avait une consistance interne satisfaisante, avec un coefficient alpha de Cronbach à 0,92. Les corrélations inter-items étaient positives, variant de 0,64 à 0,78. Cette étude a démontré la stabilité temporelle de l’échelle avec un coefficient de corrélation infraclasses à 0,79. L’analyse en composantes principales a montré que la PAID-5 était composée d’une seule dimension, avec une valeur propre initiale de 3,86 expliquant à elle seule 77,2 % de la variance. La validité de la structure externe a été vérifiée. Conclusion. L’échelle PAID-5 a les qualités psychométriques requises pour être utilisée dans le contexte socioculturel tunisien.
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Più fonti

Tesi sul tema "Validité de structure"

1

Chiasson, Caroline. "Validité concurrente de l'Object Relation Inventory, ORI, et de l'Échelle de structure de personnalité, ESP." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq25530.pdf.

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2

Hébert, Étienne. "Personality Organization Diagnostic Form, PODF, étude d'entente interjuges, d'équivalence et de validité." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0001/MQ44719.pdf.

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3

Hamad, Mohamad. "Validation psychométrique de mesures subjectives en santé orale." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCE002.

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Abstract (sommario):
La validation psychométrique d’une échelle de mesure subjective se compose de nombreuses étapes que nous exposerons et commenterons au cours de cette thèse. Nous nous appuierions plus particulièrement sur le travail de validation psychométrique de la Geriatric Oral Health Assessement Index (GOHAI) et de la Schizophrenia Cooping Oral Health Profil and Index (SCOOHPI) que nous avons réalisé. Au cours des étapes de la validation de ces échelles nous avons particulièrement exploré la question de la validité de la structure interne qui est le cœur du champ réflexif de notre travail.Dans cette thèse, nous avons 5 chapitres. Dans le chapitre 1, nous avons, d'une part, défini les concepts à étudier et expliqué la relation entre schizophrénie et santé buccodentaire, et d'autre part, nous avons présenté l'historique de la validation psychométrique des échelles de mesure subjective.Dans le chapitre 2, nous avons décrit les étapes de la validation psychométrique des échelles de mesure subjective, il existe 2 rubriques principales dans la validation psychométrique : la fidélité et la validité. La fidélité de l'échelle est composée de 3 parties : cohérence interne, fidélité au cours du temps et sensibilité au changement. La validité de l'échelle est composée de 4 parties : validité de contenu, validité perçue, validité de construit et validité de structure.Dans le chapitre 3, nous étudions la validation psychométrique de l'échelle GOHAI dans un échantillon de patients français atteints de schizophrénie. L'alpha de Cronbach montre un degré significatif de cohérence interne entre les items et le test-retest vérifie la fidélité au cours du temps. Ensuite, la validité de construit montre l'existence d'une relation entre l'échelle GOHAI et les indices CAOD (Dent Cariée, Absente, Obturée) et OHI'S (Simplifed Oral Hygiene Index). Après, l'analyse en composantes principales montre l'existence de 3 sous-échelles : les fonctions physiques, les aspects psychosociaux et les symptômes liés à la présence de maladies dentaires. Enfin, le modèle de crédit partiel vérifie que l'échelle GOHAI n'est pas unidimensionnelle.Dans le chapitre 4, nous étudions la validité de structure de l'échelle GOHAI à partir d'un échantillon de la population générale française. L'analyse en composantes principales montre l'existence de 3 sous-échelles : la douleur et l'aspect des dents, la satisfaction psychologique de l'état des dents et la capacité à manger. Ensuite, le modèle de crédit partiel vérifie l'unidimensionnalité de l'échelle GOHAI après regroupement des modalités de réponses.Dans le chapitre 5, nous étudions la validation psychométrique de l'échelle SCOOHPI à partir d'un échantillon de patients français atteints de schizophrénie. Le groupe d'experts a confirmé la validité du contenu de l'échelle SCOOHPI. La validité perçue a été vérifiée auprès de 30 individus. Ensuite, l'alpha de Cronbach montre un bon degré de cohérence interne entre les items. Après, l'absence de relation entre l'échelle SCOOHPI et l'échelle GOHAI confirme la validité de la divergence. Tandis que la validité de la convergence n'était pas mesurable en raison du manque d'outils qui mesurent un concept similaire au concept d'échelle SCOOHPI. L'analyse en composantes principales montre l'existence de 6 sous-échelles : santé buccodentaire, alimentation et hygiène buccodentaire, activité et organisation, addiction et stratégies d'évitement. Enfin, le modèle de crédit partiel montre que l'échelle SCOOHPI est unidimensionnelle après regroupement des modalités de réponses<br>The psychometric validation of a subjective measurement scale consists of many steps that we will expose and comment on during this thesis. We would rely more particularly on the work of psychometric validation of the Geriatric Oral Health Assessment Index (GOHAI) and the Schizophrenia Cooping Oral Health Profile and Index (SCOOHPI) that we have carried out. During the stages of the validation of this scale we particularly explored the question of the validity of the internal structure which is the heart of the reflexive field of our work. In this thesis we have 5 chapters. In Chapter 1, we defined the concepts to be studied and explained the relationship between schizophrenia and oral health, and presented the history of psychometric validation of subjective measurement scales.In chapter 2, we described the steps in the psychometric validation of subjective measurement scales, there are 2 main headings in psychometric validation: reliability and validity. Scale reliability is composed of 3 parts: internal consistency, reliability over time and sensitivity to change. The validity of the scale is composed of 4 parts: content validity, perceived validity, construct validity and structure validity.In chapter 3, we study the psychometric validation of the GOHAI (Geriatric Oral Health Assessment Index) scale in a sample of French patients with schizophrenia.Cronbach's alpha shows a significant degree of internal consistency between items and the test-retest verifies the reliability over time. Then, the construct validity shows the existence of a relationship between the GOHAI scale and the DMFT (Dent Cariée, Absente, Obturation) and OHI'S (Simplifed Oral Hygiene Index) indices. Afterwards, the principal component analysis shows the existence of 3 subscales: physical functions, psychosocial aspects and symptoms related to the presence of dental diseases. Finally, the partial credit model verifies that the GOHAI scale is not unidimensional.In Chapter 4, we study the structural validity of the GOHAI scale using a sample of the general French population.The principal component analysis shows the existence of 3 subscales: pain and appearance of the teeth, psychological satisfaction with the state of the teeth and ability to eat. Then, the partial credit model verifies the unidimensionality of the GOHAI scale after grouping the response modalities.In Chapter 5, we study the psychometric validation of the Schizophrenia Coping Oral Health Profile and Index (SCOOHPI) scale using a sample of French patients with schizophrenia.The panel confirmed the content validity of the SCOOHPI scale. Perceived validity was verified with 30 individuals. Then, Cronbach's alpha shows a good degree of internal consistency between items. Then, the absence of relationship between the SCOOHPI scale and the GOHAI scale confirms the validity of the divergence. While the validity of the convergence was not measurable due to the lack of tools that measure a similar concept to the SCOOHPI scale concept.The principal component analysis shows the existence of 6 subscales: oral health, diet and oral hygiene, activity and organization, addiction and avoidance strategies. Finally, the partial credit model shows that the SCOOHPI scale is unidimensional after grouping the response modalities
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Montout, Chantal. "Le modèle expérimental caille de l'entérocolite ulcéronécrosante du nouveau-né : la structure comparée de l'histologie du tube digestif du nouveau-né humain et de l'oiseau explique-t-elle la validité du modèle ?" Paris 5, 1999. http://www.theses.fr/1999PA05P117.

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5

Harper-Sciarini, Michelle. "Investigating the Reliability and Validity of Knowledge Structure Evaluations: The Influence of Rater Error and Rater Limitation." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3312.

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The likelihood of conducting safe operations increases when operators ave effectively integrated their knowledge of the operation into meaningful relationships, referred to as knowledge structures (KSs). Unlike knowing isolated facts about an operation, well integrated KSs reflect a deeper understanding. It is, however, only the isolated facts that are often evaluated in training environments. To know whether an operator has formed well integrated KSs, KS evaluation methods must be employed. Many of these methods, however, require subjective, human-rated evaluations. These ratings are often prone to the negative influence of a rater's limitations such as rater biases and cognitive limitations; therefore, the extent to which KS evaluations are beneficial is dependent on the degree to which the rater's limitations can be mitigated. The main objective of this study was to identify factors that will mitigate rater limitations and test their influence on the reliability and validity of KS evaluations. These factors were identified through the delineation of a framework that represents how a rater's limitations will influence the cognitive processes that occur during the evaluation process. From this framework, one factor (i.e., operation knowledge), and three mitigation techniques (i.e., frame-of-reference training, reducing the complexity of the KSs, and providing referent material) were identified. Ninety-two participants rated the accuracy of eight KSs over a period of two days. Results indicated that reliability was higher after training. Furthermore, several interactions indicated that the benefits of domain knowledge, referent material, and reduced complexity existed within subsets of the participants. For example, reduced complexity only increased reliability among evaluators with less knowledge of the operation. Also, referent material increased reliability only for those who scored less complex KSs. Both the practical and theoretical implications of these results are provided.<br>Ph.D.<br>Department of Psychology<br>Sciences<br>Psychology PhD
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Hoskins, Matt C. "Structural-Symbolic Translation Fluency: Reliability, Validity, and Usability." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etd/3012.

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Standardized formative mathematics assessments typically fail to capture the depth of current standards and curricula. Consequently, these assessments demonstrate limited utility for informing the instructional implementation choices of teachers. This problem is particularly salient as it relates to the mathematical problem solving process. The purpose of this study was to develop and evaluate the psychometric characteristics of Structural-Symbolic Translation Fluency, a curriculum-based measure (CBM) of mathematical problem solving. The development of the assessment was based on previous research describing the cognitive process of translation (Mayer, 2002) as well as mathematical concept development at the quantitative, structural, and symbolic levels (Dehaene, 2011; Faulkner, 2009; Griffin, 2004). Data on the Structural-Symbolic Translation Fluency assessment were collected from 11 mathematics and psychometrics experts and 42 second grade students during the spring of 2016. Data were analyzed through descriptive statistics, frequencies, Spearman-Brown correlation, joint probability of agreement, Pearson correlation, and hierarchical multiple regression. Psychometric features of interest included internal consistency, inter-rater reliability, test-retest reliability, content validity, and criterion-related validity. Testing of the 9 research questions revealed 9 significant findings. Despite significant statistical findings, several coefficients did not meet pre-established criteria required for validation. Hypothesized modifications to improve the psychometric characteristics are suggested as the focus of future research. In addition, recommendations are made concerning the role of assessing the translation process of mathematical problem solving.
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Khoo, Benjamin Cheng Choon. "Clinical and phantom-based studies of the validity and value of quantitative radiological hip structural analysis." University of Western Australia. School of Surgery and Pathology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0189.

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[Truncated abstract] Areal bone mineral density (BMD) is measured routinely in the clinic by a quantitative radiological technique, dual-energy X-ray absorptiometry (DXA). BMD is used widely to assess non-invasively but indirectly the mechanical fragility of bone and consequently is able to predict fracture risk. While BMD correlates well with in vitro measurements of bone strength it does not directly measure a mechanical property; half of incident minimally traumatic fractures in women occur with BMD values above the World Health Organisation defined threshold for osteoporosis. This arises partly because the mechanical strength of bone is dependent on its structural geometry and material strength as well as bone mineral mass. Essentially, bones fracture when load stresses exceed the mechanical capacity of the material to withstand them. The structural geometry (i.e., the amount of bone tissue and its complex three-dimensional arrangement within the macroscopic bone envelope) defines the stresses produced by a given load, while the intrinsic load capacity of the material is defined by the composition and microstructure of the bone tissue itself. Hip structural analysis (HSA) is a technique that elucidates the structural geometric component of bone strength; essentially combining information available from conventional DXA images of the proximal femur with a biomechanical beam model based on the stresses arising in a combination of pure bending and axial compression. A version of HSA has recently been released commercially, and has obtained US Food and Drug Administration approval for its clinical application. ... Given the acknowledged limitations of the HSA method when applied to 2-D projection images, a 3-D approach to structural geometry, using imaging modalities such as pQCT and QCT or a recently introduced version of DXA that mimics QCT, is indicated for the future. With that in mind and the possibility of the anthropometric phantom being adopted for future accuracy and precision assessments, improvements in the design of this phantom are recommended. Studies to better understand and verify Contents v the relevance of the 'local buckling' phenomenon as a structural geometric factor in the genesis of macro-fractures are also recommended. In summary, it is essential that superior (compared to BMD) non-invasively determined clinical predictors of bone fragility leading to fracture be investigated. Structural geometric variables are potential candidates. This has led to consideration of; (i) the need to progress beyond BMD for a more sensitive and specific bone strength measurement; (ii) theoretical advantages of structural geometry over BMD; (iii) limitations of the current HSA technique based on DXA, including those introduced by its restrictive assumptions; (iv) the value of HSA in longitudinal studies, exemplified by the 'normal' but rapid skeletal changes seen in human lactation, with possible implications for an analogous study of the menopause; and (v) an investigation, using a custom-designed anthropometric phantom, of the adaptation of HSA to certain emerging imaging modalities and methods able to resolve bone structural geometry in three dimensions.
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Konstabel, Kenn. "The structure and validity of self- and peer-reported personality traits /." Tartu : Tartu University Press, 2006. http://dspace.utlib.ee/dspace/bitstream/10062/1160/5/konstabel.pdf.

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Arikan, Serkan. "Construct Validity And Factor Structure Of Student Selection Examination Across Subgroups." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611814/index.pdf.

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In developing countries, there is a great demand for university education. In order to select students to universities a standardized test score is used. In Turkey, the Student Selection Test (SST) have important role in admission to universities. However, there is very limited knowledge about what SST mathematics sections actually measures. The main purpose of the present study is to evaluate the content of the mathematics subtest of the SST in line with mathematical cognitive skills and eventually provide construct related evidence for dimensionality of the test items. Within this framework, it is aimed to cross validate the mathematics subtest across gender groups, school types and two consecutive years. Also relations among mathematical abilities are investigated. This study is first in investigating what is measured by SST Mathematics sections and analyzing construct validity by testing several nested confirmatory factor models. Comparison of fit indices of five competitive models showed three-factor model has better fit indices in which Basic Computation Ability, Advanced Computation Ability and Geometry Ability is measured. It is concluded that problem solving items are not measuring a different process, but measures some sort of computation ability. There is a problem related to the content of the mathematics subtests of the SST in line with mathematical cognitive skills. Higher order cognitive skills are not measured properly. Three-factor model is tested about the invariance of the factors across gender, school types and years. It is concluded that invariant factor structure indicates that SST mathematics section is operating similarly for subgroups and years. The relations among mathematical abilities on three-factor model are investigated by item mapping and structural equation models. It is seen that Basic Computation Ability is a prerequisite to acquire Geometry Ability and Advanced Computation Ability.
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Grossman, Matthew R. "The Structure of Resilience: An Empirical Examination of Resilience Factors." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6851.

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Although most researchers agree that resilience is defined as the extent to which an individual bounces back and recovers from stress and adversity, the field has not yet settled on the underlying structure of the resilience construct; its lower-order factors remain in dispute and undefined. In this study, five of the most prominent resilience measures (i.e., Ego Resilience, Block & Kremen, 1996; The Resilience Scale, Wagnild & Young, 1993; The Connor-Davidson Resilience Scale, Connor & Davidson, 2003; The Resilience Scale for Adults, Friborg, Hjemdal, Rosenvinge, & Martinussen, 2003; The Brief Resilience Scale, Smith, Dalen, Wiggins, & Tooley, 2008) were administered to two large samples of U.S. adults (N = 396 and 336, respectively). Through a combination of exploratory and confirmatory techniques, seven lower-order resilience factors were identified. Relationships between general resilience, lower-order resilience factors, and correlates were examined. Results reveal that lower-order resilience factors are moderately correlated with one another and are differentially related to outcomes of interest. Follow-up hierarchical regression and relative weights analyses further reveal that general resilience substantially overlaps with Big Five personality measures, but, in many cases, its lower-order factors do not. Consequently, it is recommended moving forward that researchers continue to study the resilience construct, but do so by focusing on lower-order resilience factors, rather than on global measures of the overall resilience construct.
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Libri sul tema "Validité de structure"

1

Hirsch, Thomas M. Investigation of the dimensional structure of the P-ACT+. American College Testing Program, 1991.

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2

Irwin, David A. Michel Foucault's progressive politics: Validity and structure of the archaeological paradigm in the republican discourse of Fianna Fáil. The Author, 2000.

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1950-, Draijer Nel, ed. Multiple personality disorder in the Netherlands: A study on reliability and validity of the diagnosis. Swets & Zietlinger, 1993.

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Little, Todd D. The revised Control, Agency, and Means-Ends Interview (CAMI): A multi-cultural validity assessment using mean and covariance structures (MACS) analyses. Max-Planck-Institut für Bildungsforschung, 1995.

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5

Campbell, John. Validity and the causal structure of a disorder. Edited by Kenneth S. Kendler and Josef Parnas. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198796022.003.0032.

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There are two aspects to validation: one is establishing the very existence of a disorder, the other is determining how good our methods are of determining the presence of the disorder. Both aspects depend on the conception of the disorder as something with a causal structure implicating the symptoms of the disorder. The symptoms may figure in this structure as effects of a single latent variable, or as homeostatically related merely to one another, or in some more complex structure. But without some such conception of the causal structure of the disorder, we have no idea what we are about trying to validate criteria for the disorder. The problem in psychiatry is that we currently seem to be demanding that those causal structures should involve relations between psychological and physical variables; and we have no idea how to think of those relations in terms of causal processes and causal mechanisms.
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McCleary, Richard, David McDowall, and Bradley J. Bartos. External Validity. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190661557.003.0009.

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A threat to external validity is any factor that limits the generalizability of an observed result. Unlike all threats to statistical conclusion and internal validities and some threats to construct validity, threats to external validity cannot ordinarily be controlled by design. Nor is there any disagreement on how threats to external validity should be controlled. In most instances, it can only be controlled by replication?—across subjects, situations and time frames. This seldom happens, unfortunately, because the academic incentive structure discourages replication. The contemporary “reproducibility crisis” was spurred by a collaborative group of social scientists attempting to replicate one hundred experimental and correlational studies published in three mainstream psychology journals. Sixty percent of replications failed to reproduce the published effect. Failures to control for threats to external validity that stem from uncontrolled variations in persons, situations, and time frames, parsimosniously explain the failure rate in this replication study.
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McCleary, Richard, David McDowall, and Bradley J. Bartos. Statistical Conclusion Validity. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190661557.003.0006.

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Chapter 6 addresses the sub-category of internal validity defined by Shadish et al., as statistical conclusion validity, or “validity of inferences about the correlation (covariance) between treatment and outcome.” The common threats to statistical conclusion validity can arise, or become plausible through either model misspecification or through hypothesis testing. The risk of a serious model misspecification is inversely proportional to the length of the time series, for example, and so is the risk of mistating the Type I and Type II error rates. Threats to statistical conclusion validity arise from the classical and modern hybrid significance testing structures, the serious threats that weigh heavily in p-value tests are shown to be undefined in Beyesian tests. While the particularly vexing threats raised by modern null hypothesis testing are resolved through the elimination of the modern null hypothesis test, threats to statistical conclusion validity would inevitably persist and new threats would arise.
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Kendler, Kenneth S. Introduction to “Validity and the causal structure of a disorder”. Edited by Kenneth S. Kendler and Josef Parnas. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198796022.003.0031.

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This chapter presents an introduction to validity and the causal structure of a disorder; as further discussed in the following chapter. It outlines the critique of validation in modern psychiatric nosology; but highlights the importance of gradual processes of iteration.
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Li, Fuzhong. The exercise motivation scale: Its multifaceted structure and construct validity. 1996.

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10

Konstabel, Kenn. The structure and validity of self- and peer-reported personality traits. 2006.

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Capitoli di libri sul tema "Validité de structure"

1

Smith, Robert B. "Validity of Four Types of States." In Social Structure and Voting in the United States. Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7487-1_7.

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Ke, Jinlin, Xiongfei Lv, and Cuncun Jiang. "Tolerance Analysis Method of Aircraft Door Sealing Structure Based on Linear Simplified Model." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1876-4_100.

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AbstractAs a moving component of the aircraft, the sealing state of the door will directly affect the aircraft's pressurization level and aerodynamic performance. The existing analysis methods of sealing structures mainly consider the compression deformation and contact stress of the seals. However, in practical engineering applications, it has been found that the sealing performance of cabin door depends on the interaction between the sealing structure and the seal. On the one hand, the tolerance fluctuation and elastic deformation of the sealing structure will cause the deviation between the actual compression ratio of the seal from the theoretical value; On the other hand, the deformation caused by the resilience of the seal will change the tolerance distribution of the sealing structure. In this paper, based on the local linear simplification of loading curve of the seal, the calculation efficiency of the large-size sealing structure’s deformation is improved, so that the compression ratio fluctuation of the seal is converted into the deformation tolerance which is included in the tolerance simulation of the sealing structures to obtain the distribution characteristics of step difference value on the aerodynamic surface as well as the different compression states of the seal. The validity of this analysis method is confirmed by comparing with the commercial software calculation and the practical measured data of the aircraft door.
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Schuhen, Michael, and Susanne Schürkmann. "Construct Validity with Structural Equation Modelling." In International Handbook of Financial Literacy. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0360-8_26.

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DeMarree, Kenneth G., and Miranda E. Bobrowski. "Structure and Validity of Self-Concept Clarity Measures." In Self-Concept Clarity. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71547-6_1.

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Anastasiadou, Sofia. "Psychometric Testing Procedures for Attitudes Toward Reproductive Tourism and Cross Border Reproductive Care (ATCBRC)." In Strategic Innovative Marketing and Tourism. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-51038-0_14.

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AbstractThe study seeks to evaluate psychometric properties of Attitudes toward Cross Border Reproductive Care (ATCBRC) Inventory in terms of reliability and validity among Greek healthcare professionals. A total suitable sample of 315 doctors, 302 dentists, 356 nurses and 312 midwives were recruited to complete ATCBRC Inventory. To examine the applicability of the ATCBRC Inventory in different groups, its invariance was evaluated. The results certified the internal consistency, as measured by Cronbach alpha coefficient, test–retest reliability, composite reliability and AVE, convergent and construct validity of ATCBRC Inventory. The results revealed the internal consistency and reliability, convergent and construct validity of the ATCBRC Inventory for the group of doctors, dentists, nurses, and midwives. Furthermore, the four-factor structure of the ATCBRC Inventory was confirmed. Structural Equation Model (SEM) verified the model’s good fit and its invariance. Until now the there was any Inventory that evaluates Attitudes toward Cross Border Reproductive Care. A valid and reliable Inventory will enable researchers, doctors, healthcare marketers to capture attitudes toward CBRC and develop healthcare strategies and policies.
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Hall, Stephen R. "A Practical Methodology for Assessing the Validity of Strain Gauge Data Obtained from Advanced Composite Structures." In Composite Structures 5. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1125-3_53.

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Achtziger, W. "Topology Optimization Subject to Design-Dependent Validity of Constraints." In Topology Optimization of Structures and Composite Continua. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-010-0910-2_13.

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Ark, Tavinder K., Neelam Ark, and Bruno D. Zumbo. "Validation Practices of the Objective Structured Clinical Examination (OSCE)." In Validity and Validation in Social, Behavioral, and Health Sciences. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07794-9_16.

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Sidorenko, Denis O., Nikita O. Starodubcev, Maiia Pinchuk, and Nikolay O. Nikitin. "Interpretable Structural Analysis for Evolutionary Generative Design of Coastal Breakwaters." In Communications in Computer and Information Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-53025-8_13.

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AbstractThis paper presents an interpretable approach for the generative design of coastal breakwaters that combines evolutionary optimization and structural analysis of solutions. It allows both to improve the convergence of optimization for breakwaters structure and analyze the sensitivity of each sub-part of the solution to various changes. We conduct experiments on synthetic harbour configuration to validate this approach. The results confirm the effectiveness of our method in generating high-quality and explainable breakwater designs.
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Göcke, Lutz, and Robin Weninger. "Business Model Development and Validation in Digital Entrepreneurship." In Digital Entrepreneurship. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53914-6_4.

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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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Atti di convegni sul tema "Validité de structure"

1

Edwards, C., H. Kim, and C. Budd. "Investigation on the Validity of Topology Optimisation Methods." In 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
14th AIAA/ASME/AHS Adaptive Structures Conference
7th. American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-1984.

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Kunnath, Sashi K., and Alfred John, Jr. "Validity of Static Procedures in Performance-Based Seismic Design." In Structures Congress 2000. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40492(2000)37.

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Lee, Ki-Myung, Won-Hyuk Choi, Hyun Soo Kim, Seung Han Moon, and Jin Tae Kim. "Hull Structural Analysis of Turret-Moored FPSOs Considering Hull–Turret Interaction." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23902.

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For turret-moored ship-type offshore structures such as floating production storage and offloading (FPSO) units, the hull structure is affected by mooring and riser loads that are transferred through turret systems, in addition to environmental loads on the hull itself. Moreover, the existence of turret structures has an influence on the structural behavior of the hull around the turret system. In the structural design of FPSOs, the turret structure and its loads are considered in a direct analysis of hull structure for a realistic strength assessment of FPSOs. This paper investigates several specific techniques for hull structural analysis considering the interaction with the turret system. The linear gap function is utilized to represent the nonlinear contact behavior between the hull and turret structures. The linear superposition of structural responses is also adapted, and its validity is demonstrated in the case of hull–turret contact problems. These studies conclude that the hull structures with turret systems that involve contact nonlinearity in their interface can be assessed using the conventional hull strength assessment based on linear analysis. Moreover, by including the turret model directly in hull structural analysis, the uncertainty arising from hull–turret interface loads can be reduced, and a robust and adaptive design procedure can be set up in the detailed engineering stages.
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Song, Seung Woo, Chungkuk Jin, and Do Kyun Kim. "A Novel Approach for Ship Digital Twin Optimisation: Principal Component Analysis-Driven Distortion Base Mode Selection and Utilisation." In ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/omae2024-124226.

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Abstract This study aims to improve the efficiency of distortion base mode selection using Principal Component Analysis (PCA) and enhance structural response estimation techniques for digital twin applications in the maritime structures. Real-time determination of loads on a structure is essential for digitalisation in the maritime sector. Methods such as modal superposition and inverse finite element methods have been investigated to calculate loads at arbitrary points from a limited number of sensors. The objective of this study is to estimate loads by using a conversion matrix constructed by distortion base modes. In this study, modes are selected based on the response to regular waves. To achieve this, a distinct algorithm has been developed to select orthogonal modes. This study proposes a novel mode selection method by implementing PCA, which enables obtaining the most representative direction. Wave load case with responses which is most parallel to this direction is determined to be the first mode. To validate our methodology, we estimate hotspot stresses on an FPSO. This method reduces computation time while maintaining high accuracy of estimation. These findings show potential for application to other offshore structures. Further research using actual measurement data is expected to enhance the validity and reliability of these techniques, making a significant contribution to the field of maritime structural analysis and digital twin technology.
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Umeda, Hiroki, and Hirohisa Noguchi. "Structural Optimization of Buckling Load in Fluid-Structure Interaction Problems." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32545.

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This paper presents a procedure for the sensitivity analysis of buckling load in fluid-structure interaction problems. In the formulation, the buckling of thin structures subjected to the pressure of viscous flow is modeled, where the geometrically nonlinear equation and the Navier-Stokes equation should be considered. These equations are solved by the strong coupling formulation and the Newton-Raphson method. In order to confirm the validity of this procedure, the arch subjected to only the static pressure of fluid is analyzed. Finally, simple optimization considering fluid-structure interaction is performed using the calculated sensitivity along with the steepest descend method and the satisfactory result is obtained.
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Zhou, K., and J. Tang. "Perturbing Structural Design Towards Minimizing Variation in Vibratory Response." In ASME 2013 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/dscc2013-4006.

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Real structures are always subject to uncertainties due to material imperfection, machining tolerance, and assemblage error, etc. These uncertainties lead to variations in structural vibratory responses. In order to reduce the likelihood of unexpected failures in structures, we need to minimize the response variations, which is the underlying idea of robust design. In this paper, we present an inverse sensitivity-based algorithm that allows us to tailor the structural design such that, under the same level of uncertainties, the response variations can be effectively reduced. We first develop a direct relation between the structural uncertainties and the response variations including the means and variances. We then formulate an optimal identification algorithm that will yield design perturbation to minimize the response variances while maintaining the mean values. Case analyses are carried out to validate the validity and efficiency of the new algorithm.
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Pankow, Mark. "The Use of High Fidelity Inspection Data to Validate Predictions of Delamination and Residual Strength of Impacted Composite Panels." In 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-0485.

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8

Andriani, Fitri, Cholichul Hadi, Urip Purwono, and Siti Sulasmi. "Validity of Processing Speed Ability Test based on Internal Structure." In International Conference on Psychology in Health, Educational, Social, and Organizational Settings. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0008586601560161.

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9

Ko, Jeonghwan, Maruthi R. Akella, John L. Junkins, Thomas W. Strganac, and Andrew J. Kurdila. "Nonlinear Model Reference Adaptive Control for Limit Cycle Oscillations." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/vib-8384.

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Abstract Recently derived structured model reference adaptive control (MRAC) method is employed for the active suppression of limit cycle oscillations for a typical wing section with structural nonlinearity. The structured MRAC takes advantage of the specific structure of governing equations for the general mechanical systems. The adaptive control method is implemented and tested in wind tunnel experiment to validate the performance. For comparison, results obtained with adaptive feedback linearization are also presented.
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10

Masanobu, Sotaro, Shunji Kato, Katsuya Maeda, and Yasuhiro Namba. "Response of the Mega-Float Equipped With Novel Wave Energy Absorber." In ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2003. http://dx.doi.org/10.1115/omae2003-37170.

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The hydroelastic response is significant from the viewpoint of the structural design of a Mega-Float. Equipping a Mega-Float with some additional structures, such as vertical plates, is one of the ways to reduce the hydroelastic response easily. However, in general, wave drift force acting on the Mega-Float may be increased, when the Mega-Float is equipped with the additional structures to reduce the response. In the present study, we developed a novel additional structure that was effective in the reduction of both hydroelastic response and wave drift force. Furthermore, we estimated the response of Mega-Float equipped with the additional structures, and compared the result with the value measured in at-sea experiments. As a result, we confirmed both the effectiveness of the novel additional structure and the validity of the estimation method.
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Rapporti di organizzazioni sul tema "Validité de structure"

1

Carey, Neil B. Factor Structure and Incremental Validity of the Enhanced Computer- Administered Tests. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada263894.

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2

Petrova, Katerina. On the Validity of Classical and Bayesian DSGE-Based Inference. Federal Reserve Bank of New York, 2024. http://dx.doi.org/10.59576/sr.1084.

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This paper studies large sample classical and Bayesian inference in a prototypical linear DSGE model and demonstrates that inference on the structural parameters based on a Gaussian likelihood is unaffected by departures from Gaussianity of the structural shocks. This surprising result is due to a cancellation in the asymptotic variance resulting into a generalized information equality for the block corresponding to the structural parameters. The underlying reason for the cancellation is the certainty equivalence property of the linear rational expectation model. The main implication of this result is that classical and Bayesian Gaussian inference achieve a semi-parametric efficiency bound and there is no need for a “sandwich-form” correction of the asymptotic variance of the structural parameters. Consequently, MLE-based confidence intervals and Bayesian credible sets of the deep parameters based on a Gaussian likelihood have correct asymptotic coverage even when the structural shocks are non-Gaussian. On the other hand, inference on the reduced-form parameters characterizing the volatility of the shocks is invalid whenever the structural shocks have a non-Gaussian density and the paper proposes a simple Metropolis-within-Gibbs algorithm that achieves correct large sample inference for the volatility parameters.
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3

Torres, Marissa, Michael-Angelo Lam, and Matt Malej. Practical guidance for numerical modeling in FUNWAVE-TVD. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45641.

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This technical note describes the physical and numerical considerations for developing an idealized numerical wave-structure interaction modeling study using the fully nonlinear, phase-resolving Boussinesq-type wave model, FUNWAVE-TVD (Shi et al. 2012). The focus of the study is on the range of validity of input wave characteristics and the appropriate numerical domain properties when inserting partially submerged, impermeable (i.e., fully reflective) coastal structures in the domain. These structures include typical designs for breakwaters, groins, jetties, dikes, and levees. In addition to presenting general numerical modeling best practices for FUNWAVE-TVD, the influence of nonlinear wave-wave interactions on regular wave propagation in the numerical domain is discussed. The scope of coastal structures considered in this document is restricted to a single partially submerged, impermeable breakwater, but the setup and the results can be extended to other similar structures without a loss of generality. The intended audience for these materials is novice to intermediate users of the FUNWAVE-TVD wave model, specifically those seeking to implement coastal structures in a numerical domain or to investigate basic wave-structure interaction responses in a surrogate model prior to considering a full-fledged 3-D Navier-Stokes Computational Fluid Dynamics (CFD) model. From this document, users will gain a fundamental understanding of practical modeling guidelines that will flatten the learning curve of the model and enhance the final product of a wave modeling study. Providing coastal planners and engineers with ease of model access and usability guidance will facilitate rapid screening of design alternatives for efficient and effective decision-making under environmental uncertainty.
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4

Streufert, Siegfried, Rosanne M. Pogash, Mary T. Piasecki, Mary A. Repman, and Robert W. Swezey. Data Collection via a Quasi-Experimental Simulation Technology. III. Factor Structure and Validity. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada173913.

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5

Banaszak, David. Versatile Measurement Techniques to Validate Analytical Structural Mechanical Models. Defense Technical Information Center, 2007. http://dx.doi.org/10.21236/ada469782.

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6

Шестопалова (Бондар), Катерина Миколаївна. Active Citizenship of Ukrainian Teenagers. Київ, 2016. http://dx.doi.org/10.31812/123456789/3233.

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Adaptation of the questionnaire "Active citizenship of young people" by Polish psychologists Anna Zalewska, Beata Krzywosz-Rynkiewicz was conducted on a sample of 206 people (11 –14 –17 year-old). Evaluation of psychometric properties of Ukrainian version of the questionnaire was conducted, its scales checked for internal consistency and reproducibility. With the help of correlation analysis construct validity was proved, that received almost a complete reproduction of the factor structure of the original.
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7

Romero, Antonio. The Political Dialogue and Cooperation Agreement and relations between European Union and Cuba. Fundación Carolina, 2022. http://dx.doi.org/10.33960/issn-e.1885-9119.dtff01en.

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This document makes an assessment of the Political Dialogue and Cooperation Agreement (PDCA) between Cuba and the European Union (EU) in its four years of validity, and of the evolution of political and economic relations between both parties. The analysis is structured in five headings that address the background, determinants and significance of the PDCA between Cuba and the EU; the main elements discussed in the political dialogue —and in thematic dialogue— between the two parties since 2018, and the central aspects of trade, investment and cooperation relations between Cuba and the EU. The report concludes that, unlike the United States, the EU is able to support the complex process of economic and institutional transformations underway in Cuba, in four fundamental areas: i) technical assistance and advice for the design and implementation of public policies, macroeconomic management, decentralisation and local development; ii) cooperation to fight climate change and transform Cuba’s productive and technological structure; iii) the promotion and encouragement of foreign investment flows from Europe, targeting key productive sectors; and iv) the exploration of financial opportunities for Cuba through the European Investment Bank (EIB) under the current PDCA.
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8

Barcelo-Llull, Barbara. Analysis of the OSSEs with multi-platform in situ data and impact on fine-scale structures. EuroSea, 2022. http://dx.doi.org/10.3289/eurosea_d2.3.

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This report includes recommendations for the planification of in situ experiments aimed to reconstruct fine-scale ocean currents (~20 km), such as those that will be conducted to validate SWOT satellite observations.
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9

Brcelo-Llull, Barbara. Analysis of the OSSEs with multi-platform in situ data and impact on fine-scale structures - Revised version. EuroSea, 2023. http://dx.doi.org/10.3289/eurosea_d2.3_v2.

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Abstract (sommario):
This report includes recommendations for the design of in situ experiments aimed to reconstruct fine-scale ocean currents (~20 km), such as those that will be conducted to validate SWOT satellite observations.
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10

Rao, Rekha R., Mathias C. Celina, Nicholas Henry Giron, Kevin Nicholas Long, and Edward M. Russick. Experiments to Populate and Validate a Processing Model for Polyurethane Foam: Additional Data for Structural Foams. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1169443.

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