Bibliografie tematiche / Conceptions of control

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Letteratura scientifica selezionata sul tema "Conceptions of control"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 8 febbraio 2022

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Articoli di riviste sul tema "Conceptions of control"

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Pettit, Philip. "Three Conceptions of Democratic Control". Constellations 15, n. 1 (marzo 2008): 46–55. http://dx.doi.org/10.1111/j.1467-8675.2008.00473.x.

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Calhoun, Kathryn C., Kurt T. Barnhart, Michal A. Elovitz e Sindhu K. Srinivas. "Evaluating the Association between Assisted Conception and the Severity of Preeclampsia". ISRN Obstetrics and Gynecology 2011 (30 ottobre 2011): 1–5. http://dx.doi.org/10.5402/2011/928592.

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Objective. To investigate the association between assisted conceptions and preeclampsia (PEC), including assessment of severity of disease. Methods. In a prospective case control study, cases were selected from women with preeclampsia and controls from women without preeclampsia. Exposure was defined as assisted conception with intrauterine insemination or in vitro fertilization (IUI or IVF). We assessed the association between exposure and outcome, using Chi square or Fisher's exact tests. Stratified analyses and multivariable logistic regression were used to control for confounders. Results. Preeclampsia was associated with assisted conception after controlling for age and race (AOR 2.2, [1.03–4.72]). All women with preeclampsia who had assisted conceptions demonstrated severe disease and were more likely to have abnormal lab values: AST >45 (AOR = 6.01 [1.63–22.21] P=0.007), creatinine ≥1 (AOR 2.92 [0.82–10.4], P=0.09) or platelets <100 (AOR 5.74 [1.00–32.76] P=0.049), after adjusting for race, age, and multiple gestations. Conclusion. Assisted conceptions are associated with a more severe preeclamptic phenotype.
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Rajão, Raoni, e Niall Hayes. "Conceptions of Control and it Artefacts: An Institutional Account of the Amazon Rainforest Monitoring System". Journal of Information Technology 24, n. 4 (dicembre 2009): 320–31. http://dx.doi.org/10.1057/jit.2009.12.

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Based on Fligstein's (1990) work on ‘conceptions of control’ (broad managerial paradigms), this paper provides an analysis of the ways in which information technology (IT) artefacts shape and are shaped by institutional contexts. Specifically, we report on primary and secondary empirical data that spans a 44-year period pertaining to the uses made of the Amazon rainforest monitoring system (a set of satellite-based geographic information systems). This paper argues that: (1) the process of institutional change is conflictual, emergent and contested; (2) the design and use of IT artefacts tend to reflect the currently dominant conceptions of control; (3) that IT artefacts that emerge within a specific conception of control can be later reconfigured to serve the interests of other conceptions of control; (4) and finally, IT artefacts might unintentionally reinforce alternate conceptions of control and lead to institutional change.
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Johnson, Virginia G. "Student Teachers' Conceptions of Classroom Control". Journal of Educational Research 88, n. 2 (novembre 1994): 109–17. http://dx.doi.org/10.1080/00220671.1994.9944825.

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Ültay, Neslihan. "THE EFFECT OF CONCEPT CARTOONS EMBEDDED WITHIN CONTEXT-BASED CHEMISTRY: CHEMICAL BONDING". Journal of Baltic Science Education 14, n. 1 (20 febbraio 2015): 96–108. http://dx.doi.org/10.33225/jbse/15.14.96.

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The aim of this study was to investigate the effect of concept cartoons embedded within context-based learning approach on 8th grade students’ alternative conceptions of “chemical bonding”. Within a nonequivalent pretest-posttest control group design, the study was conducted with 45 8th grade students. To gather data, Chemical Bonding Concept Test (CBCT) with 16 multiple choice questions and clinical interviews with 5 open-ended questions was used to probe their conceptions. Clinical interview questions were prepared in parallel with the same alternative conceptions asked in the CBCT. At the end of the study, context-based approach was found effective at remedying alternative conceptions about chemical bonding. On the other hand, although concept cartoons are found powerful tools to remedy alternative conceptions about chemical bonding, they did not show an extraordinary effect. This suggests that we may need to use more than one intervention method to effectively remedy the alternative conceptions in chemical bonding. Key words: alternative conception, chemical bonding, concept cartoons, context-based approach.
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Dissanayake, Yasaratne Bandara, Aleksandr Pankov e Vladimir Shestakov Shestakov. "QUALITY CONTROL ON THE BASIS OF ENTROPY DETERMINATION". TRANSPORT 19, n. 2 (30 aprile 2004): 51–55. http://dx.doi.org/10.3846/16484142.2004.9637953.

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Statistical methods are extensively used in quality control. The method of the application of entropy conception for quality control is proposed. It is based on the use of statistical information about deviations in the operation of a complex system. In the context of this: the structure of the complex system control is considered; the conceptions of controllable and observable systems are introduced. The classification of adverse factor is given influencing upon the system. The example is presented, showing how the application of the proposed method permits to give the evaluation of sources of risks and quality reduction in the complex system.
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Free, Mary Moore. "Cross-Cultural Conceptions of Pain and Pain Control". Baylor University Medical Center Proceedings 15, n. 2 (aprile 2002): 143–45. http://dx.doi.org/10.1080/08998280.2002.11927832.

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Delbridge, Rick, e Mahmoud Ezzamel. "The Strength of Difference: Contemporary Conceptions of Control". Organization 12, n. 5 (settembre 2005): 603–18. http://dx.doi.org/10.1177/1350508405055937.

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Hitchcock, Peter F., Lindsay M. Martin, Laura Fischer, Stephanie Marando-Blanck e James D. Herbert. "Popular Conceptions of Mindfulness: Awareness and Emotional Control". Mindfulness 7, n. 4 (14 aprile 2016): 940–49. http://dx.doi.org/10.1007/s12671-016-0533-9.

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Room, Robin. "Drugs, Consciousness and Self-control: popular and medical conceptions". International Review of Psychiatry 1, n. 1-2 (gennaio 1989): 63–70. http://dx.doi.org/10.3109/09540268909110384.

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Più fonti

Tesi sul tema "Conceptions of control"

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Gherbrehiwet, Tesfamicael. "Lay logic : health conceptions, perceived health status , health locus of control, health value and health behaviour of Eritrean immigrants". Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294691.

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Alterman, Toni. "SELF-CONCEPT AND LOCUS OF CONTROL IN HISPANIC AND ANGLO THIRD AND FOURTH GRADERS". Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187905.

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Effects of a substance abuse prevention program on the locus of control and self-concept of 148 Hispanic and Anglo third and fourth grade children were evaluated. A 2 x 2 (race x group) multivariate analysis of variance with repeated measures was carried out using the Health Resources Inventory, Coopersmith Self-Esteem Inventory, Nowicki-Strickland Locus of Control Scale, and two roster and rating sociometric questionnaires. The results of the analysis revealed a significant effect of time and interactions between time and race and time and group. Mean scores on the Health Resources Inventory and both sociometric questionnaires increased from pre-test to post-test for all children. In addition, children's scores indicated a change toward an internal direction on the Locus of Control Scale. Only the sociometric questionnaire measuring the children's perception of their popularity showed a significant group effect. The experimental group, those whose teachers had used the prevention curriculum, increased their perception of how well they were liked by their classmates. However, their actual popularity as measured by the average of their classmates' rating did not change. Possible explanations and methodological shortcomings are discussed.
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Boyer, Steven Andrew. "L337 Soccer Moms: Conceptions of "Hardcore" and "Casual" in the Digital Games Medium". Atlanta, Ga. : Georgia State University, 2009. http://digitalarchive.gsu.edu/communication_theses/53/.

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Thesis (M.A.)--Georgia State University, 2009.
Title from title page (Digital Archive@GSU, viewed July 20, 2010) Ted Friedman, committee chair; Alisa Perren, Greg Smith, committee members. Includes bibliographical references (p. 156-169).
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Kim, Hyunyoung. "Conception centrée sur l'utilisateur des commandes de changement de forme". Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALM001.

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Les interfaces à forme variable apportent de la flexibilité aux interfaces physiques en transformant les dispositifs de calcul en n'importe quelle forme ou matérialité. Les interfaces à forme variable seront de plus en plus accessibles aux utilisateurs finaux à l'avenir, de même que le développement technologique. Cependant, nous en savons peu sur les critères de conception des interfaces de changement de forme pour les utilisateurs finaux, en particulier pour ceux qui utilisent des interfaces de contrôle des paramètres. Les interfaces de contrôle des paramètres sont souvent conçues à partir d'exemples existants tels que les cadrans et les curseurs, et il y a eu peu d'études pour comprendre les besoins des utilisateurs derrière leur utilisation. D'autre part, il existe des taxonomies d'interface qui permettent aux concepteurs d'explorer systématiquement les idées de conception d'interfaces qui changent de forme, mais elles ne sont guère évaluées. Dans cet exposé, je discute de mon travail de doctorat sur les deux domaines de l'ICH : les interfaces de contrôle des paramètres et les interfaces de changement de forme. J'effectue d'abord une étude formative pour suggérer les exigences de conception des interfaces de contrôle des paramètres en fonction de la pratique actuelle des utilisateurs. Deuxièmement, j'affine une taxonomie d'interface qui change de forme en évaluant sa puissance descriptive en utilisant des objets reconfigurables de tous les jours. Enfin, j'examine l'intersection des interfaces de contrôle des paramètres et des interfaces de changement de forme. Je développe deux études de cas : KnobSlider, une interface de changement de forme qui peut être un bouton ou un curseur, et ExpanDial, un contrôle de rotation qui étend la modalité d'interaction par des changements de forme
Shape-changing interfaces bring flexibility in physical interfaces through by transforming computational devices into any shape or materiality. Shape-changing interfaces will be increasingly available to end-users in the future, along with technology development. However, we know little about design criteria of shape-changing interfaces for end-users, especially for whom use parameter control interfaces. Parameter control interfaces are often designed based on existing examples such as dials and sliders, and there were few studies to understand user needs behind their usage. On the other hand, there are shape-changing interface taxonomies that allow designers to explore design ideas of shape-changing interfaces systematically, but they are hardly evaluated. In this talk, I discuss my Ph.D. work investigating the two areas of HCI: parameter control interfaces and shape-changing interfaces. I first conduct a formative study to suggest design requirements for parameter control interfaces based on users' current practice. Second, I refine a shape-changing interface taxonomy by evaluating its descriptive power by using everyday reconfigurable objects. Lastly, I look into the intersection of the parameter control interfaces and shape-changing interfaces. I develop two case studies: KnobSlider, a shape-changing interface that can be a knob or a slider, and ExpanDial, a rotational control that extends the interaction modality through shape-changes
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Josemin, Gilberto Clóvis. "A construção social do mercado de software e suas práticas estratégicas". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/31763.

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Estudos sobre o software, que ocupa um lugar destacado dentre as tecnologias da informação, têm abordado suas atividades a partir do enfoque econômico. Tendo como objetivo alcançar uma compreensão a respeito do modo de construção de práticas estratégicas de produtores/fornecedores de software referentes aos seus produtos e/ou serviços, a nossa visada ao mercado de software é feita a partir de um enfoque econômico e social. Por isto, balizamos o estudo na busca de um entendimento a respeito da construção social deste mercado, significando uma busca de aspectos históricos relevantes sobre o seu desenvolvimento e de elementos característicos da estrutura social deste mercado. Apreendemos esta estrutura a partir da identificação de diferentes tipos de atores deste mercado, de relações de dominação existentes entre eles, de práticas estratégicas que utilizam, mobilizando diferentes espécies de capitais (p. ex.: financeiro, tecnológico, comercial, social, simbólico), e a partir da estruturação das suas ofertas, em termos de modalidades de software e serviços relacionados. Utilizamos como referencial teórico a Sociologia Econômica, a Teoria dos Campos, Estratégia como Prática e Capacidades Dinâmicas. Para as análises da pesquisa utilizamos múltiplas fontes de evidências e diferentes métodos, como observação participante, pesquisa histórica e estudo de caso, combinados num desenho de pesquisa onde cada etapa procura subsídios nos resultados das anteriores. Adotamos como estratégia de pesquisa, análises no nível macro, da construção e da estrutura social do mercado de software, e análises no nível micro, de práticas estratégicas de empresas posicionadas do lado da demanda e do lado da oferta de software, com um estudo de caso no mercado de software para imobiliárias. Dentre os resultados da pesquisa está a identificação de práticas estratégicas de empresas de software, que agrupamos em categorias como “incorporação de inovação”, “desenvolvimento de produto”, “licenciamento de uso”, “prestação de serviços de suporte técnico e manutenção” e “comercialização de software produto”. Foi possível estabelecer vinculações destas práticas com elementos da estrutura social do campo pesquisado, particularmente com as relações de dominação.
Scientific studies on software, which occupy a notorious place in the field of information technology, approach their activities from an economic perspective. Aiming to reach an understanding on how to build strategic practices for producers /suppliers of software, vis-à-vis products and/or services, the target software market is, therefore, seen from an economic and social focus. This work was framed to foster comprehension on the social construction of this market, leading to an investigation of its relevant historical aspects and the main characteristics of its social structure. Such structure is acknowledged from the identification of different types of actors in this market as well as the power relations between them which, through their strategic practices, mobilize different kinds of capital (e.g.: financial, technological, commercial, social, and symbolic). It also focuses on their framework of offers regarding their types of software and related services. The theoretical focal point is on the Economic Sociology, the Theory of Fields, Strategy as Practice and the Dynamic Capabilities. Multiple sources of evidence and different methods were used in the analysis of this survey, such as participant observation, historical research and case study, combined with a research design in which each step of the search results from previous outcomes. The search strategy used included analyses at the macro level, of social construction and social structure of the software market, as well as analyses at the micro level of strategic practices of companies placed on the software demand and supply sides, with a study case in the software market for real estate. Among the results of the research is the identification of strategic practices of software companies, which grouped into categories such as "incorporation of innovation", "product development", "license of use", "provision of technical support and maintenance" and "software product marketing". It was possible to establish connections between these practices and the elements of the social structure of this field researched, particularly with the relations of domination.
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Matten, Gael. "Conception robuste d'actionneurs électromécaniques distribués pour le contrôle vibroacoustique de structures". Thesis, Besançon, 2016. http://www.theses.fr/2016BESA2038/document.

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Cette thèse concerne le développement d’outils de conception nécessaires à la réalisation de matériaux composites hybrides intégrant des patchs piézoélectriques shuntés électriquement par des circuits à capacité négative. L’impact des incertitudes sur les performances de ces systèmes hybrides innovants est à ce jour inconnu ou mal maîtrisé, ce qui peut compromettre leur fiabilité et nuire à leur applicabilité industrielle. La première contribution du travail de thèse a ainsi porté sur le développement et la caractérisation d’un circuit de shunt numérique adapté à un contrôle adaptatif pour une structure équipée d’un grand nombre de patchs. Les étapes de dimensionnement et de conception électronique du dispositif sont présentées et ont conduit à un prototype qui a montré expérimentalement sa capacité à générer un shunt de type capacité négative. La deuxième contribution du travail de thèse porte sur l’analyse de la robustesse de ces dispositifs en considérant le système dans sa globalité, depuis les paramètres géométriques (dimensions) ou matériaux jusqu’aux paramètres électriques. Une analyse des paramètres les plus influents est proposée et conduit à une mise en évidence des plages d’incertitudes tolérables pour une efficacité donnée. Enfin l’association des dispositifs considérés en un réseau distribué permet d’envisager une meilleure réduction des vibrations ou ondes acoustiques par un accroissement notamment de la largeur de bande fréquentielle dans laquelle le système est efficace. Le circuit numérique développé dans la thèse permet d’envisager cette extension au caractère distribué par sa miniaturisation, son adaptabilité et son intégrabilité. La dernière contribution du travail de thèse porte donc sur des perspectives d’extension du travail développé à un système distribué pour la génération d’une inter face active intégrée à la structure
This thesis deals with the development of design tools needed for the realization of hybridcomposite materials incorporating piezoelectric patches electrically shunted by negativecapacitance circuits. The impact of uncertainty on the performance of these innovative hybridsystems is yet unknown or poorly controlled, which can compromise their reliability and harmtheir industrial applicability. The first thesis contribution has focused on the development andcharacterization of a digital shunt circuit adapted to an adaptive control for a structureequipped with a large number of patches. The design steps and electronic device design arepresented and led to a prototype that has shown experimentally its ability to implement anegative capacitance shunt. The second contribution of the thesis is the analysis of therobustness of these devices by considering the whole system, from geometric to materialsparameters, including the electrical parameters. An analysis of the most significantparameters is proposed and has highlighted the tolerable uncertainty ranges for a givenefficiency. Finally, the combination of the developed digital devices inside a distributednetwork provides a better reduction of acoustic waves or vibrations by increasing theefficiency bandwidth. The use of the developed digital circuit in such distributed systems hasbeen made possible by its miniaturization, adaptability and integrability. The last contributionof the thesis therefore focuses on prospects in fully integrated active interfaces
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Guo, Chunshi. "Conception des principes de coopération conducteur-véhicule pour les systèmes de conduite automatisée". Thesis, Valenciennes, 2017. http://www.theses.fr/2017VALE0020/document.

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Face à l’évolution rapide des technologies nécessaires à l’automatisation de la conduite au cours de ces dernières années, les grands constructeurs automobiles promettent la commercialisation de véhicules autonomes à l’horizon 2020. Cependant, la définition des interactions entre les systèmes de conduite automatisée et le conducteur au cours de la tâche de conduite reste une question ouverte. L'objectif de cette thèse est de concevoir, développer et évaluer des principes de coopération entre le conducteur et les systèmes de conduite automatisée. Compte tenu de la complexité d'un tel Système Homme-Machine, la thèse propose, en premier lieu une architecture de contrôle coopératif hiérarchique et deux principes de coopération généraux sur deux niveaux dans l’architecture qui serviront ensuite de base commune pour la conception des systèmes coopératifs développés pour les cas d’usages définis. Afin d’assurer une coopération efficace avec le conducteur dans un environnement de conduite dynamique, le véhicule autonome a besoin de comprendre la situation et de partager sa compréhension de la situation avec le conducteur. Pour cela, cette thèse propose un formalisme de représentation de la scène de conduite basé sur le repère de Frenet. Ensuite, une méthode de prédiction de trajectoire est également proposée. Sur la base de la détection de manœuvre et de l'estimation du jerk, cette méthode permet d’améliorer la précision de la trajectoire prédite comparée à celle déterminée par la méthode basée sur une hypothèse d'accélération constante. Dans la partie d’études de cas, deux principes de coopération sont mis en œuvre dans deux cas d’usage. Dans le premier cas de la gestion d’insertion sur autoroute, un système de contrôle longitudinal coopératif est conçu. Il comporte une fonction de planification de manœuvre et de génération de trajectoire basée sur la commande prédictive. En fonction du principe de coopération, ce système peut à la fois gérer automatiquement l’insertion d’un véhicule et donner la possibilité au conducteur de changer la décision du système. Dans le second cas d'usage qui concerne le contrôle de trajectoire et le changement de voie sur autoroute, le problème de partage du contrôle est formulé comme un problème d’optimisation sous contraintes qui est résolu en ligne en utilisant l’approche de la commande prédictive (MPC). Cette approche assure le transfert continu de l’autorité du contrôle entre le système et le conducteur en adaptant les pondérations dans la fonction de coût et en mettant en œuvre des contraintes dynamiques en ligne dans le modèle prédictif, tout en informant le conducteur des dangers potentiels grâce au retour haptique sur le volant. Les deux systèmes sont évalués à l’aide de tests utilisateur sur simulateur de conduite. En fonction des résultats des tests, cette thèse discute la question des facteurs humains et la perception de l'utilisateur sur les principes de coopération
Given rapid advancement of automated driving (AD) technologies in recent years, major car makers promise the commercialization of AD vehicles within one decade from now. However, how the automation should interact with human drivers remains an open question. The objective of this thesis is to design, develop and evaluate interaction principles for AD systems that can cooperate with a human driver. Considering the complexity of such a human-machine system, this thesis begins with proposing two general cooperation principles and a hierarchical cooperative control architecture to lay a common basis for interaction and system design in the defined use cases. Since the proposed principles address a dynamic driving environment involving manually driven vehicles, the AD vehicle needs to understand it and to share its situational awareness with the driver for efficient cooperation. This thesis first proposes a representation formalism of the driving scene in the Frenet frame to facilitate the creation of the spatial awareness of the AD system. An adaptive vehicle longitudinal trajectory prediction method is also presented. Based on maneuver detection and jerk estimation, this method yields better prediction accuracy than the method based on constant acceleration assumption. As case studies, this thesis implements two cooperation principles for two use cases respectively. In the first use case of highway merging management, this thesis proposes a cooperative longitudinal control framework featuring an ad-hoc maneuver planning function and a model predictive control (MPC) based trajectory generation for transient maneuvers. This framework can automatically handle a merging vehicle, and at the mean time it offers the driver a possibility to change the intention of the system. In another use case concerning highway lane positioning and lane changing, a shared steering control problem is formulated in MPC framework. By adapting the weight on the stage cost and implementing dynamic constraints online, the MPC ensures seamless control transfer between the system and the driver while conveying potential hazards through haptic feedback. Both of the designed systems are evaluated through user tests on driving simulator. Finally, human factors issue and user’s perception on these new interaction paradigms are discussed
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Boughanmi, Najet. "Conception conjointe des systèmes contrôlés en réseaux sans fil". Thesis, Vandoeuvre-les-Nancy, INPL, 2011. http://www.theses.fr/2011INPL021N/document.

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Le cadre de cette thèse est l'étude des systèmes contrôlés en réseau sans fil (SCRSF) qui utilise la technologie IEEE 802.15.4. Le premier objectif est d'étudier la pertinence de l'utilisation du réseau de type IEEE 802.15.4 pour les SCRSF puis de proposer et d'évaluer des mécanismes pour garantir la Qualité de Service (QdS) offerte par le réseau au système contrôlé. Nous analysons l'utilisation des slots temporels réservés (GTS) dans le cadre des SCRSF et les contraintes qui en découlent. De plus, nous proposons des mécanismes de gestion de la QdS avec priorité aussi bien pour le mode avec balise que pour le mode sans balise du protocole IEEE 802.15.4. Ces propositions ont été validées par des simulations et une partie de manière analytique. Notre deuxième objectif est de concevoir, d'une manière conjointe, les SCRSF pour pouvoir régler en ligne la QdS offerte par le réseau en fonction de la Qualité de Contrôle (QdC) du système contrôlé. Nous proposons des protocoles d'adaptation en ligne de la QdS du réseau qui prennent en compte la QdC du système contrôlé. Ces protocoles ont été validés par simulations et une implémentation réelle de chacun d'eux est proposée
In this thesis, we study wireless networked control systems (WNCS) which use the IEEE 802.15.4 technology. The first objective is to study the pertinence of the use of the IEEE 802.15.4 for the WNCS, then to propose and evaluate QoS management mechanisms which guarantee the Quality of Service (QoS) offered by network to the controlled system. We analyse the use of the guaranteed temporel slots (GTS) for WNCS and in which conditions it is possible. We propose QoS management mechanisms with priority for both the beacon enabled mode and the non-beacon enabled mode of the IEEE 802.15.4 protocol. These proposals are validated through simulations and partially with analytical approach. The second objective is to design the WNCS so that the QoS offered by the network is adated online depending on the Quality of Control (QoC) on the controlled system. We propose QoS online adaptation protocols which take as parameter the QoC of the system. These protocols are validated through simulations and a realistic implementation of them is proposed
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Méric, Jérôme. "Le temps en controle de gestion evolution des conceptions temporelles dans une discipline". Jouy-en Josas, HEC, 1998. http://www.theses.fr/1998EHEC0057.

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Adoptant une approche constructiviste du role du discours, nous considerons que ce dernier est susceptible de creer une realite chez ceux qui le recoivent. C'est le cas particulier de la composante temporelle. Ce travail porte d'abord sur les conceptions du temps portees par la litterature francaise de controle de gestion des vingt dernieres annees. Par + conception du temps ;, il faut entendre les idees que placent les auteurs de la discipline derriere le terme de + temps ;. Une premiere etape de cette recherche a consiste a identifier ces dernieres, qui se revelent en fait reifiantes et reductrices, donc particulierement rassurantes, au regard de l'idee que nous pouvons nous faire d'un temps destructeur. Une deuxieme phase est concentree sur les conceptions implicites du temps portees par des manuels representatifs de cette meme litterature, c'est a dire celles qui, sans etre exprimees directement dans les textes, fondent la plupart des outils et methodes proposes en controle de gestion. Lors de notre etape d'exploration, nous avons mis en evidence le role essentiel que jouent quatre attitudes recommandees par la discipline dans l'expression de ces approches. Il s'agit de ce que nous avons appele la retrospection, la prospective, la reaction et la proaction. Nous avons cherche a articuler ces concepts dans un modele croisant deux debats relatifs a la question du temps, a savoir l'orientation vers le passe ou le futur, et le rapport a l'incertitude. L'essentiel de notre tache a consiste a suivre dans la duree l'importance relative de ces quatre attitudes dans la litterature de controle de gestion. Pour ce faire, nous avons adopte une demarche lexicometrique associee a une analyse qualitative conventionnelle de dix manuels en langue francaise parus dans le domaine depuis la fin des annees 1970 a la fin des annees 1990. Cette etude a mis en evidence l'emergence - dans le vocabulaire comme dans les idees - d'un discours promouvant la reaction et la proaction, c'est a dire des attitudes plus actives et moins orientees vers la connaissance. Considere au second degre, ce resultat souligne le passage d'une negation de l'incertitude a une acceptation active de cette derniere. Dans nos conclusions, nous montrons en quoi produire du temps, c'est donc, indirectement et souvent inconsciemment, produire du controle
Referring to constructivist approaches of language, we consider that it may be a vector of reality creation. It is particularly the case for the time dimension. This investigation deals with the conceptions of time that have been expressed for twenty years in the french management control literature. A + conception of time ; has to be understood as an idea associated with the word + time ; by management control specialists. In a first step, we have tried to identify and formulate those ideas, which happen to reduce time to concepts of manageable things. As a result they are particularly able to create a sense of security in comparison with the idea of a destructive time. A second step of our research is focused on implicit conceptions of time met in french management control handbooks. Those conceptions, if not expressed directly in literature, constitute the basis of management control methods. During the exploration phase, we have underlined the essential role of four attitudes recommended by the discipline, which are linked to precise conceptions of time : retrospection, prospective, reaction and proaction. We have tried to articulate those concepts in a single model, using two approaches of time, namely the orientation (to the past or to the future), and the relation to uncertainty. The main part of our investigation consisted in following each of those attitudes and its evolution in management control literature. To achieve this, we have used lexicometry associated with conventional qualitative analysis methods, applied to ten french management control handbooks (issued between 1978 and 1990). This inquiry highlighted the raising up (in the vocabulary as well as in the ideas) of reaction and proaction, which hare the most active attitudes. This result can be interpreted as the change from uncertainty negation to active acceptation. In our conclusions, we try to show how producing time is also producing control, indirectly and often unconsciously
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Pajon, Adrien. "Humanoid robots walking with soft soles". Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS060/document.

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Lorsque des changements inattendus de la surface du sol se produisent lors de la marche, le système nerveux central humain doit appliquer des mesures de contrôle appropriées pour assurer une stabilité dynamique. De nombreuses études dans le domaine de la commande moteur ont étudié les mécanismes d'un tel contrôle postural et ont largement décrit comment les trajectoires du centre de masse (COM), le placement des pas et l'activité musculaire s'adaptent pour éviter une perte d'équilibre. Les mesures que nous avons effectuées montrent qu'en arrivant sur un sol mou, les participants ont modulé de façon active les forces de réaction au sol (GRF) sous le pied de support afin d'exploiter les propriétés élastiques et déformables de la surface pour amortir l'impact et probablement dissiper l'énergie mécanique accumulée pendant la ‘chute’ sur la nouvelle surface déformable. Afin de contrôler plus efficacement l'interaction pieds-sol des robots humanoïdes pendant la marche, nous proposons d'ajouter des semelles extérieures souples (c'est-à-dire déformables) aux pieds. Elles absorbent les impacts et limitent les effets des irrégularités du sol pendant le mouvement sur des terrains accidentés. Cependant, ils introduisent des degrés de liberté passifs (déformations sous les pieds) qui complexifient les tâches d'estimation de l'état du robot et ainsi que sa stabilisation globale. Pour résoudre ce problème, nous avons conçu un nouveau générateur de modèle de marche (WPG) basé sur une minimisation de la consommation d'énergie qui génère les paramètres nécessaires pour utiliser conjointement un estimateur de déformation basé sur un modèle éléments finis (FEM) de la semelle souple pour prendre en compte sa déformation lors du mouvement. Un tel modèle FEM est coûteux en temps de calcul et empêche la réactivité en ligne. Par conséquent, nous avons développé une boucle de contrôle qui stabilise les robots humanoïdes lors de la marche avec des semelles souples sur terrain plat et irrégulier. Notre contrôleur en boucle fermée minimise les erreurs sur le centre de masse (COM) et le point de moment nul (ZMP) avec un contrôle en admittance des pieds basé sur un estimateur de déformation simplifié. Nous démontrons son efficacité expérimentalement en faisant marcher le robot humanoïde HRP-4 sur des graviers
When unexpected changes of the ground surface occur while walking, the human central nervous system needs to apply appropriate control actions to assure dynamic stability. Many studies in the motor control field have investigated the mechanisms of such a postural control and have widely described how center of mass (COM) trajectories, step patterns and muscle activity adapt to avoid loss of balance. Measurements we conducted show that when stepping over a soft ground, participants actively modulated the ground reaction forces (GRF) under the supporting foot in order to exploit the elastic and compliant properties of the surface to dampen the impact and to likely dissipate the mechanical energy accumulated during the ‘fall’ onto the new compliant surface.In order to control more efficiently the feet-ground interaction of humanoid robots during walking, we propose adding outer soft (i.e. compliant) soles to the feet. They absorb impacts and cast ground unevenness during locomotion on rough terrains. However, they introduce passive degrees of freedom (deformations under the feet) that complexify the tasks of state estimation and overall robot stabilization. To address this problem, we devised a new walking pattern generator (WPG) based on a minimization of the energy consumption that offers the necessary parameters to be used jointly with a sole deformation estimator based on finite element model (FEM) of the soft sole to take into account the sole deformation during the motion. Such FEM computation is time costly and inhibit online reactivity. Hence, we developed a control loop that stabilizes humanoid robots when walking with soft soles on flat and uneven terrain. Our closed-loop controller minimizes the errors on the center of mass (COM) and the zero-moment point (ZMP) with an admittance control of the feet based on a simple deformation estimator. We demonstrate its effectiveness in real experiments on the HRP-4 humanoid walking on gravels
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Libri sul tema "Conceptions of control"

1

Revolutionary conceptions: Women, fertility, and family limitation in America, 1760-1820. Chapel Hill: University of North Carolina Press, 2009.

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Westheimer, Ruth K. Al-hayat al-jinsia lil usrah. Syria: Al-Ahali, 1999.

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Monton, Edgar A. Modern contraception. 2a ed. Worcester Park: Roseneath Scientific, 1985.

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La conception en communication: Méthodologie qualité. Paris: Hermès, 1997.

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Azambre, Jacques. Maîtriser une conception de qualité. Paris: Masson, 1992.

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Rubin, Olis. The design of automatic control systems. Norwood, MA: Artech House, 1986.

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Sacré, Régis. Manager efficacement un groupe projet en conception. Saint Denis La Plaine: AFNOR, 2001.

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Léridon, Henri. Les enfants du désir. Paris: Julliard, 1995.

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Rothbart, Betty. Frontiers in fertility: Report on the Symposium on Human Fertility Regulation : Technological Frontiers and Their Implications convened by Planned Parenthood Federation of America, Inc., December 14-15, 1984, New York, New York. New York: Planned Parenthood Federation of America, 1985.

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Rothbart, Betty. Frontiers in fertility: Report on the Symposium on Human Fertility Regulation--Technological Frontiers and Their Implications, convened by Planned Parenthood Federation of America, Inc., December 14-15, 1984, New York, New York. New York, N.Y. (810 7th Ave., New York 10019): The Federation, 1985.

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Capitoli di libri sul tema "Conceptions of control"

1

Terwogt, M. Meerum, e H. Stegge. "Children’s Understanding of the Strategic Control of Negative Emotions". In Everyday Conceptions of Emotion, 373–90. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8484-5_21.

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Vigneshwaran, Sivakumar, Palliyalil Sirajudheen, Perumal karthikeyan, Chettithodi Poovathumkuzhi Nabeena e Sankaran Meenakshi. "Remediation of Persistent Organic Pesticides from Wastewater Matrices—Present and Future Conceptions". In Pollution Control Technologies, 7–37. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0858-2_2.

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Edwards, Anne. "Male Violence in Feminist Theory: an Analysis of the Changing Conceptions of Sex/Gender Violence and Male Dominance". In Women, Violence and Social Control, 13–29. London: Palgrave Macmillan UK, 1987. http://dx.doi.org/10.1007/978-1-349-18592-4_2.

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Saravanan, D., e S. Vaithyasubramanian. "Image Extraction Using Image Attribute Conception Technique". In Advances in Automation, Signal Processing, Instrumentation, and Control, 935–43. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8221-9_87.

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Chudoba, Bernd. "‘AeroMech’—Conception of a Generic Stability and Control Methodology". In Stability and Control of Conventional and Unconventional Aerospace Vehicle Configurations, 189–243. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16856-8_5.

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Kuleshov, Sergey V., Alexey Y. Aksenov, Iliya I. Viksnin, Eugeny O. Laskus e Vladislav V. Belyaev. "The Analysis of Cybersecurity Problems in Distributed Infocommunication Networks Based on the Active Data Conception". In Cyber-Physical Systems and Control, 491–99. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-34983-7_48.

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Jirásko, P., V. Crhák e P. Bureš. "The Conception of the Control System of Radial Cam Grinder". In Advances in Mechanisms Design, 495–500. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5125-5_65.

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Skrzypczyk, Krzysztof. "Conception of a Diagnostic System for Evaluating a Technique Correctness and Effectiveness of Running". In Studies in Systems, Decision and Control, 291–99. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21118-3_16.

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Van Brussel, Cécile, e Jacques Troussart. "Conception of an Expert System of Control Filtering for Statistical Surveys". In Advances in Stochastic Modelling and Data Analysis, 413–25. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-017-0663-6_24.

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da Silva, Robson Marinho, Diolino J. Santos Filho e Paulo E. Miyagi. "From Conception to Implementation of Reconfigurable and Distributed Manufacturing Control System". In Lecture Notes in Computer Science, 35–46. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-22867-9_4.

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Atti di convegni sul tema "Conceptions of control"

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Coelho, Leandro dos Santos, e Viviana Cocco Mariani. "Discrete Variable Structure Control Based on Optimization by Cultural Differential Evolution Approach". In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15554.

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Advanced conceptions to design industrial control systems are, in general, dependent of mathematical models of the controlled process. Also, the task of the controllers is to achieve an optimum performance when facing with various types of disturbances that are, sometimes, unknown in practical applications. An advanced methodology for control design is the variable structure control (VSC) with sliding mode. This paper considers the non-linear control of industrial processes based on self-tuning discrete VSC technique. A novel and systematic VSC design methodology is proposed, which integrates an estimator based on recursive least square algorithm, a discrete quasi-sliding surface and a optimization method. Contrary to the trial and error selection of the variable structure feedback gains reported in the literature, the selection in present work is done using differential evolution (DE) optimization, an evolutionary computation technique, with a new operator based on normative knowledge of cultural algorithms. The proposed design has been applied to a control valve described by a non-linear Wiener model. Numerical simulation results reveal that the new DE approach is applicable and promising for the VSC design.
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Hu¨ning, M. "Comparison of Discharge Coefficient Measurements and Correlations for Several Orifice Designs With Cross-Flow and Rotation Around Several Axes". In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50976.

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Gas turbines and jet engines consist of a network of connected cavities beside the main gas path, called secondary air system. These cavities, which are often surrounded by stationary and high angular speed rotating walls are exposed to varying pressure and temperature levels of air or oil contaminated air and are connected to each other by orifices or restrictors. It is vital to control the secondary flow, to enable a reliable and efficient engine design, which meets component durability with a minimum of parasitic air consumption. It is essential to understand the flow physics as well as network inter-dependency in order to minimise the flow consumption and yet, meeting engine operating requirements, as well as practical parts component design or manufacturing needs. In this connexion computer network codes containing model conceptions, which can accurately predict orifice flows, are essential. In an effort to provide usable further insight into flows across restrictors such as orifices this publication compares test results, CFD calculations and orifice loss calculation models from the open literature with the aid of transformation laws and contour plots. The influence of different geometric features is incorporated into a model for the calculation of discharge coefficients.
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Martens, G., O. Lukyanovych e I. Filippenko. "Multipayload injection conception". In Progress in Flight Dynamics, Guidance, Navigation, Control, Fault Detection, and Avionics, a cura di C. Vallet, D. Choukroun, C. Philippe, G. Balas, A. Nebylov e O. Yanova. Les Ulis, France: EDP Sciences, 2013. http://dx.doi.org/10.1051/eucass/201306517.

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Gentili, Enzo, Francesco Aggogeri e Marco Mazzola. "The Improvement of a Manufacturing Stream Using the DMAIC Method". In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14469.

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The need for globalization, the saturation and instability of markets, the life-cycle time reduction of products and the customer demands have been the main factors that have contributed to a radical change of management conceptions and strategies. In this context the application of improvement methodologies, which suggest techniques and methods to organize and manage the manufacturing and service of industrial processes, is essential to increase the business performance. The purpose of this paper is to show the main steps to improve the efficiency and effectiveness of the manufacturing stream of a company that produces both professional and simple kitchen knives. This company is leader in its market and it focuses on safety, reliability, design and quality of its products. The improvement project analyses all potential sources of product defects and scraps, assessing the main manufacturing processes (shearing, hardening, rolling, sharpening and pressing), and suggests every possible solution to increase the performance level. In order to achieve these goals the Lean Six Sigma methodology was applied, following the DMAIC (define, measure, analyse, improve and control) problem solving approach. The DMAIC is a better way to manage an improvement project putting the customer first and using facts and data to achieve better solutions. The project also highlights an economic analysis in order to understand the benefits and the convenience of a rigorous and structured improvement plan.
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Chen-xu, Li, Yang Ping e Yang Ming-ying. "Conception of Parallel Intelligent Military System". In CACRE2019: 2019 4th International Conference on Automation, Control and Robotics Engineering. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3351917.3351965.

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Hong, Luo, Lv Lianhong, Xue Jie e Zhao Juan. "New Conception of Air Pollution Control in China". In 2012 Third International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2012. http://dx.doi.org/10.1109/icdma.2012.131.

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Li, Wen-ling, e Jing Huang. "The conception of Transit Metropolis in Guangzhou". In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5535305.

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Corbett, Nicholas C., e Norman P. Lines. "Control Requirements for the RB 211 Low Emission Combustion System". In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-012.

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The RB 211 DLE series staged, pre-mix, lean burn combustor, demands total integration of control system and combustion hardware. The controls design process is described from the conception of the Engine Management System (EMS), which provides protection and control in separate environments, through to implementation of engine development testing. The process of devising an acceptable fuelling strategy to each combustion stage is discussed. This identified the requirements for the computation of complex routines in order to control combustion zone temperatures. The sensitivity of the control design to external conditions of humidity, ambient temperature and fuel composition are explored. Extensive simulation was used to determine necessary instrumentation accuracies. The paper concludes with a review of the development testing and the final control system configuration.
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Hu, Dongfang, e Jianwei Guo. "Conception of Information Construction for Numerical Control Training Base". In 2016 7th International Conference on Education, Management, Computer and Medicine (EMCM 2016). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/emcm-16.2017.106.

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Guangquan Wang, He Zhang e Xin Liu. "Conception of time synchronization performance monitoring system". In 2015 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS). IEEE, 2015. http://dx.doi.org/10.1109/ispcs.2015.7324680.

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