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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
81

Effects of reinforcer density versus reinforcement schedule on human behavioral momentum

Slivinski, James G. 30 March 2009 (has links)
The essential tenet of the behavioral momentum model (BMM) is that relative response rate decreases less in the face of disruption when maintained by a higher reinforcer density. Empirical support exists based on both response-dependent and response-independent reinforcement. In the present study the BMM was tested with college students in 4 multi-element experiments, each using 2 reinforcement schedules and a disrupter. Participants performed a categorical sort (by orientation) of triangles on a computer monitor. Sorting response rates were disrupted by a concurrent task, pressing the keyboard “T” key whenever 2 displayed changing numbers were equal. Initial training established fast (under VR 4) and slow (under DRL 5-s) sorting rates, and provided practice with the disrupting task. In Experiment 1 DRL 5-s provided higher reinforcer density, while in Experiment 2 VR 4 did. In Experiment 3 the higher total reinforcer density was achieved by adding VT 6-s to DRL 5-s while in Experiment 4 it was achieved by adding VT 12-s to VR 4. In all 4 experiments, sorting rate decreased with introduction of the disrupter. In Experiments 1 and 3, relative sorting rate decreased less under DRL based schedule (greater reinforcer density), supporting the BMM. However, in Experiments 2 and 4, relative sorting also decreased less under DRL (lower reinforcer density), contrary to the BMM prediction. Taken together, these data show greater relative resistance to change under DRL (versus VR), independent of reinforcer density. Thus, contrary to the BMM, the nature of the reinforcement schedule seemed to be the principal factor determining behavioral momentum. / May 2009
82

Sjuksköterskors och läkares delaktighet i kvalitetsutveckling : En fallstudie vid Karlskoga lasarett

Boström, Jonas, Gradin, Stefan January 2013 (has links)
The purpose of this master's degree thesis was to develop an understanding of how hospital management, in the case studied, worked to achieve changes in an organization influenced by differing professional cultures. To gain insight into the conditions that may have contributed to nurses and physicians developing appropriate attitudes and behaviours, which may have affected the organization's ability to achieve the Swedish Quality Award 2012.  A qualitative single case study was conducted at Karlskoga Hospital, with focus groups as well as individual depth interviews.   The results of the case study showed the following conditions provided nurses and physicians the potential to develop appropriate attitudes and behaviours, which may have influenced the hospitals ability to achieve the Swedish Quality Award:   Responsibility and influence over the development processes. Participation in management teams and quality development groups as well as individual fields of responsibility. Training programs that have given insights and skills in quality management related to clinical practice. Nurses and physicians as key individuals gave legitimacy to development process, and served as management advisors. Collaboration between all kind of employees and responsibilities. Committed management.
83

Effects of reinforcer density versus reinforcement schedule on human behavioral momentum

Slivinski, James G. 30 March 2009 (has links)
The essential tenet of the behavioral momentum model (BMM) is that relative response rate decreases less in the face of disruption when maintained by a higher reinforcer density. Empirical support exists based on both response-dependent and response-independent reinforcement. In the present study the BMM was tested with college students in 4 multi-element experiments, each using 2 reinforcement schedules and a disrupter. Participants performed a categorical sort (by orientation) of triangles on a computer monitor. Sorting response rates were disrupted by a concurrent task, pressing the keyboard “T” key whenever 2 displayed changing numbers were equal. Initial training established fast (under VR 4) and slow (under DRL 5-s) sorting rates, and provided practice with the disrupting task. In Experiment 1 DRL 5-s provided higher reinforcer density, while in Experiment 2 VR 4 did. In Experiment 3 the higher total reinforcer density was achieved by adding VT 6-s to DRL 5-s while in Experiment 4 it was achieved by adding VT 12-s to VR 4. In all 4 experiments, sorting rate decreased with introduction of the disrupter. In Experiments 1 and 3, relative sorting rate decreased less under DRL based schedule (greater reinforcer density), supporting the BMM. However, in Experiments 2 and 4, relative sorting also decreased less under DRL (lower reinforcer density), contrary to the BMM prediction. Taken together, these data show greater relative resistance to change under DRL (versus VR), independent of reinforcer density. Thus, contrary to the BMM, the nature of the reinforcement schedule seemed to be the principal factor determining behavioral momentum.
84

Effects of reinforcer density versus reinforcement schedule on human behavioral momentum

Slivinski, James G. 30 March 2009 (has links)
The essential tenet of the behavioral momentum model (BMM) is that relative response rate decreases less in the face of disruption when maintained by a higher reinforcer density. Empirical support exists based on both response-dependent and response-independent reinforcement. In the present study the BMM was tested with college students in 4 multi-element experiments, each using 2 reinforcement schedules and a disrupter. Participants performed a categorical sort (by orientation) of triangles on a computer monitor. Sorting response rates were disrupted by a concurrent task, pressing the keyboard “T” key whenever 2 displayed changing numbers were equal. Initial training established fast (under VR 4) and slow (under DRL 5-s) sorting rates, and provided practice with the disrupting task. In Experiment 1 DRL 5-s provided higher reinforcer density, while in Experiment 2 VR 4 did. In Experiment 3 the higher total reinforcer density was achieved by adding VT 6-s to DRL 5-s while in Experiment 4 it was achieved by adding VT 12-s to VR 4. In all 4 experiments, sorting rate decreased with introduction of the disrupter. In Experiments 1 and 3, relative sorting rate decreased less under DRL based schedule (greater reinforcer density), supporting the BMM. However, in Experiments 2 and 4, relative sorting also decreased less under DRL (lower reinforcer density), contrary to the BMM prediction. Taken together, these data show greater relative resistance to change under DRL (versus VR), independent of reinforcer density. Thus, contrary to the BMM, the nature of the reinforcement schedule seemed to be the principal factor determining behavioral momentum.
85

Unlearning in the workplace : a mixed methods study

Becker, Karen Louise January 2007 (has links)
Contemporary organisations face a raft of challenges in coping with competing demands and rapidly changing environments. With these demands and changes comes the need for those within the organisation to be adequately skilled to meet these challenges both now and into the future. There is a growing concern that the rate of change is such that learning will not be sufficient and that individuals will need to be skilled in unlearning or letting go of past practice and behaviour. This research investigated individual unlearning as it applies in the workplace, and enabled the development of a process model of unlearning that provides specific indication of factors affecting unlearning during times of change. In particular, this thesis highlights the critical importance of elements of a more personal and affective nature; often referred to as "soft" issues. Six key factors at the level of the individual were identified as impacting unlearning; positive prior outlook, individual inertia, feelings and expectations, positive experience and informal support, understanding the need for change, and assessment of the new way. Two factors emerged from the organisational level that also impact unlearning; organisational support and training and history of organisational change. Many change efforts will fail because of lack of attention to individuals, how they unlearn and the level of feelings and expectations that accompany change. This research demonstrates that organisations must provide resources and education to provide both those in supervisory roles and those impacted by change with the necessary skills to unlearn and to embrace change at an individual level.
86

Etude physiopathologique en électrophysiologie et en IRM fonctionnelle des processus de perception automatique du changement visuel dans l'autisme / Visual automatic change perception in autism : an electrophysiological and fMRI study

Clery, Helen 14 December 2012 (has links)
L’intolérance au changement est fréquemment observée dans l'autisme et s'exprime dans toutes les modalités sensorielles. L’objectif de ce travail était d’étudier la perception automatique du changement visuel chez des enfants et adultes avec autisme via un paradigme oddball passif. En utilisant l’électrophysiologie, des réponses atypiques aux changements visuels mêmes mineurs, ont été mises en évidence dans l’autisme, quel que soit l'âge, suggérant une hyperdistractibilité des patients. De plus, l’utilisation de l’IRMf a permis de révéler, lors de la présentation d’un changement visuel, une hyperactivation du cortex sensoriel associée à une hyperactivation du cortex cingulaire antérieur, d’autant plus élevée que les patients avaient des traits autistiques marqués. Cette étude suggère donc qu’une hyper-réactivité sensorielle associée à des troubles de l’attention visuelle sélective contribueraient aux troubles de perception du changement et aux difficultés d'adaptation dans l’autisme. / Resistance to change is often reported in autism spectrum disorders (ASD) and may occur in all sensory modalities. The aim of the present work was to investigate automatic visual change detection in children and adults with ASD using a passive oddball paradigm. Whatever the age, electrophysiological results showed atypical responses to, even minor, changes, suggesting an hyper distractibility in the patients. Besides, fMRI results revealed hyperactivation of the sensory cortex associated with hyperactivation of the anterior cingulate cortex in adults with ASD, the latest being correlated with the degree of autistics symptoms. These studies thus suggest that a sensory hyper-reactivity associated with visual selective attention deficits might contribute to atypical change perception and adaptation in ASD.
87

Dinâmicas de mudança e continuidade em contextos de crise: estudo de caso em organização híbrida

Guerra, Rafael Prado 07 December 2017 (has links)
Submitted by Rafael Prado Guerra (rafaelpradoguerra@hotmail.com) on 2018-01-10T02:07:10Z No. of bitstreams: 1 4. Dissertação - Dinâmicas de Mudança - RAFAEL GUERRA_v5.5.pdf: 3556474 bytes, checksum: 43308ba3310a430b0013913be13a52e8 (MD5) / Approved for entry into archive by Janete de Oliveira Feitosa (janete.feitosa@fgv.br) on 2018-01-24T12:06:29Z (GMT) No. of bitstreams: 1 4. Dissertação - Dinâmicas de Mudança - RAFAEL GUERRA_v5.5.pdf: 3556474 bytes, checksum: 43308ba3310a430b0013913be13a52e8 (MD5) / Made available in DSpace on 2018-01-29T16:41:40Z (GMT). No. of bitstreams: 1 4. Dissertação - Dinâmicas de Mudança - RAFAEL GUERRA_v5.5.pdf: 3556474 bytes, checksum: 43308ba3310a430b0013913be13a52e8 (MD5) Previous issue date: 2017-12-07 / The present study intends to analyze dynamics of change and continuity in crisis contexts, through a case study of a hybrid organization of the energy sector in an emerging country. It is investigated the recent creation process of the Controlling area (until then formally nonexistent), from a historical perspective of agency-structure, trying to identify hybrid dynamics and strategies of resistance-acceptance to the imposition of a new order, resulting from the exchange of management and organizational restructuring. Qualitative research methods were used, using in-depth interviews with the company high-level executives, through a semi-structured and open questions script, as well as documentary and bibliographic analysis of primary and secondary sources. It can be observed that the scenario of institutional and economic crisis through which the organization, the sector and the country were passing made possible the emergence of managerialist logics and financial perspectives, accelerating the processes of changes that were already underway. However, we observed resistance actions that reshaped the initially proposed design for organizational restructuring referenced to market benchmarks, in which interaction and negotiation between agents promoted hybridization processes of structures and strategies that re-adjusted the final configuration. The work approach can be characterized as a limiting factor in hindering a more active and prolific participation of the interviewees, since in addressing sensitive issues such as restructuring, strategy, changes, acceptance, resistance, among others, they may worry about preserving information secrecy, strategic data or specific knowledge for the organization, and in certain cases there may be a selectivity criterion regarding the responses granted. It contributes to the practice because it allows the understanding of acceptance-resistance dynamics to organizational change and the resolutions arising from the social interaction of agents in the corporate environment, as a way of providing subsidies to managers of hybrid organizations belonging to this and other sectors and countries. It also adds to the theory evidence regarding research linked to the critical perspective, in that it brings important elements and field data to academic discussion. / O presente trabalho pretende analisar dinâmicas de mudança e continuidade em contextos de crise, por meio de um estudo de caso de uma organização híbrida do setor de energia em um país emergente. Investiga-se o processo recente de criação da área de Controladoria (até então formalmente inexistente), sob uma perspectiva histórica de agência- estrutura, procurando identificar dinâmicas e estratégias híbridas de resistência-aceitação à imposição de uma nova ordem, advinda da troca de gestão e reestruturação organizacional. Metodologia – Os métodos de pesquisa utilizados foram qualitativos, através da realização de entrevistas em profundidade com executivos de alto nível gerencial da companhia, por meio de um roteiro semi-estruturado com questões abertas, bem como análise documental e bibliográfica de fontes primárias e secundárias. Constata-se que o cenário de crise institucional e econômica pela qual passavam a organização, o setor e o país possibilitaram a emergência de lógicas gerencialistas e perspectivas financistas, acelerando processos de mudanças que já se encontravam anteriormente em curso. No entanto, observaram-se ações de resistência que remodelaram o desenho inicialmente proposto para a reestruturação organizacional referenciada a benckmarks de mercado, em que a interação e negociação entre os agentes promoveu processos de hibridização de estruturas e estratégias que readequaram a configuração final. O enfoque do trabalho pode ser caracterizado como um fator de limitação ao dificultar uma participação mais ativa e prolífica dos entrevistados, já que ao abordar temas sensíveis como reestruturação, estratégia, mudanças, aceitação, resistência, dentre outros, podem preocupar-se em preservar informações sigilosas, dados estratégicos ou conhecimentos específicos para a organização, podendo haver em certos casos um critério de seletividade quanto às respostas concedidas. Contribui para a prática pois permite o entendimento de dinâmicas de aceitação-resistência à mudança organizacional e as resoluções advindas da interação social dos agentes no ambiente corporativo, como forma de fornecer subsídios a gestores de organizações híbridas pertencentes a este e outros setores e países. Também acrescenta à teoria evidências em relação às pesquisas vinculadas à perspectiva crítica, na medida em que traz elementos importantes e dados de campo à discussão acadêmica.
88

Improving construction processes in Nigeria using the Last Planner® System

Ahiakwo, Ograbe A. January 2015 (has links)
This thesis describes a research investigation into the implementation of the Last Planner System (LPS) in Nigeria, to improve construction processes within the Nigerian construction industry. LPS is known to be the most developed practical use of Lean Construction. It focuses on minimising the negative impacts of variability, uncertainties, buffers, making projects more predictable, creating reliable work plans and convalescing collaborative planning. However, the Nigerian construction industry is associated with a number of challenges which impair its performance. These challenges were grouped and classified into six major barriers: these include: supervision and quality control, fluctuation and variations, subcontractor involvement, resistance to change, cultural issues, and lengthy approvals. Consequently, a Design Science Research (DSR) approach is adopted to evaluate the effectiveness of implementing LPS in construction projects in Nigeria. In order to achieve this aim, an Action Research strategy is adopted and three case studies are reported; two of these cases describe how LPS was successfully implemented in construction projects within Nigeria. While the third case involved an investigation into the state of production plan reliability, of a successful project in Nigeria. These projects were selected based on non-probabilistic sampling from different geographical locations in Nigeria to represent different kinds of construction projects within the country. The first and second cases involved the implementation of LPS within the construction of a prototype student’s hostel and the construction a 4 Kilometre single carriageway road respectively. The third on the other hand involved the construction of a multipurpose hydro-power dam project; where comparisons were made between typical LPS projects and the project management techniques applied within the project. Data was collected through observation site activities, interviews, documentary analysis and questionnaire survey. The data generated was subsequently analysed by means of content analysis and evaluated in terms of its reliability, validity, representativeness, flexibility, rigour and reflexivity. In view of the LPS implementation within the two case studies, six barriers were identified and classified together with the six barriers associated with the Nigerian Construction industry. These barriers were linked, measured and ranked in averages of their degrees of occurrences. It was revealed that the major barriers were cultural issues and resistance to change, while the others include; lengthy approval, subcontractor’s involvement, poor supervision and quality, fluctuations and variations. Hence, a framework was developed to mitigate these barriers, when implementing LPS in construction projects in Nigeria. The main steps of the framework include: the need to identify purpose; the need to identify stakeholders impact; the need to obtain Sponsorship; the need to build a cross functional team; the need to create measurement indices; the need for training on Lean techniques and LPS; and finally the need to create a right working climate. Furthermore a focus group between construction practitioners was organised to test and evaluate the framework developed. It was revealed from the focus group that the framework has the potential to facilitate the implementation process as proposed.
89

A ansiedade do novo e a conveniência do velho: um olhar sobre a resistência a mudanças tecnológicas na Divisão de Atividades Auxiliares da Universidade Federal da Paraíba

Honorato, Denise Coeli Ribeiro 09 December 2016 (has links)
Submitted by Viviane Lima da Cunha (viviane@biblioteca.ufpb.br) on 2017-03-29T14:36:26Z No. of bitstreams: 1 arquivototal.pdf: 2095880 bytes, checksum: 7df9cd0956f3bcaeef228a8765869a71 (MD5) / Made available in DSpace on 2017-03-29T14:36:26Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 2095880 bytes, checksum: 7df9cd0956f3bcaeef228a8765869a71 (MD5) Previous issue date: 2016-12-09 / This research emphasizes that the labor market is increasingly demanding and competitive, given that digital technologies change with significant speed, leading organizations to implement Information Systems that fit this reality. It emphasizes that the organizations when entering this technological scenario are faced with resistance to changes by human resources. I the present research aims to analyze factors that cause resistance to technological changes in the Division of Auxiliary Activities of the Federal University of Paraíba, aiming to provide means of overcoming this resistance, particularly, the Integrated System of Patrimony, Administration and Contracts. It points out that 12 servers, including two managers, constitute the sample of the research. The research is characterized as a case study which makes use of questionnaires and participant observation. As a research technique, it relies on Content Analysis. It concludes that the lack of planning, training, communication, organizational culture, digital limitations, service time and age of the servers are factors that cause resistance to change, and consequently, the implementation of Information System. It suggests that the higher levels of the University implement policies aimed at servers motivation, in the effective use of the Information System, through training and training courses capable of sensitizing them to the importance of technologies in the daily life of the organization and its human capital. / Esta pesquisa enfatiza que o mercado de trabalho está cada vez mais exigente e competitivo, haja vista que as tecnologias digitais mudam com uma velocidade significativa, levando as organizações a implementar sistemas de informação que se alinhem a essa realidade. Ressaltase que as organizações, ao adentrarem nesse cenário tecnológico, deparam-se com a resistência a mudanças por parte dos recursos humanos. A presente pesquisa tem como objetivo analisar fatores que causam resistência a mudanças tecnológicas na Divisão de Atividades Auxiliares da Universidade Federal da Paraíba, visando a proporcionar meios de superação a essa resistência, particularmente ao Sistema Integrado de Patrimônio, Administração e Contratos. A amostra da pesquisa está constituída por 12 servidores, incluindo dois gestores. A pesquisa se caracteriza como um estudo de caso que faz uso de questionários e observação participante. Como técnica de pesquisa, apoia-se na análise de conteúdo. Conclui-se que a falta de planejamento, capacitação, comunicação, cultura organizacional, limitações digitais, tempo de serviço e idade dos servidores são fatores que causam resistência à mudança, e consequentemente, a implementação de sistema de informação. Sugere-se que as instâncias superiores da Universidade implementem políticas voltadas para a motivação dos servidores, no uso efetivo do sistema de informação, por meio de treinamentos e cursos de capacitação capazes de sensibilizá-los para a importância das tecnologias no cotidiano da organização e do seu capital humano.
90

Satisfação pós-recuperação e intenção de recompra no varejo online : proposição e teste de moderadores dessa relação

Nagel, Mateus de Brito January 2014 (has links)
Esta dissertação tem como objetivo central investigar fatores que moderam a relação entre satisfação pós-recuperação e intenção de recompra no varejo online. Mais especificamente, esta pesquisa visa analisar se os construtos qualidade do relacionamento, resistência à mudança e motivo inferido moderam a relação entre satisfação com o gerenciamento de reclamações e intenção de recompra no varejo online. Para verificar tais moderações, inicialmente foi realizada a etapa exploratória de pesquisa, na qual, por meio de entrevistas em profundidade, evidenciou-se que as variáveis propostas poderiam moderar a relação entre a variável independente e dependente desta dissertação, bem como foi adicionado o construto valor econômico como possível moderador da relação entre satisfação pós-reclamação e intenção de recompra. Em seguida, para testar as hipóteses propostas foi aplicada uma survey junto a consumidores norte-americanos (N=500), operacionalizada com auxílio do Qualtrics, via Mechanical Turk. Como resultado dos testes, tem-se que a qualidade do relacionamento, o motivo inferido e a percepção de valor econômico moderam a relação entre satisfação pós-recuperação e intenção de recompra no varejo online, ou seja, podem explicar, em partes, a não linearidade da relação entre a variável independente e dependente desta pesquisa. Destaca-se ainda que as dimensões da qualidade do relacionamento (a saber: satisfação, confiança e comprometimento) sugeridas neste estudo também moderaram, individualmente, a relação entre a variável independente e dependente desta pesquisa. Sendo assim, esta dissertação contribuiu para a literatura de Marketing e comércio eletrônico ao evidenciar que tanto a qualidade do relacionamento, bem como as dimensões de satisfação, confiança e comprometimento moderam a relação entre satisfação com o gerenciamento de reclamações e intenção de recompra. Além disso, evidencia-se que a elevada percepção de valor econômico, e os motivos inferidos pelos clientes (se positivos), diante da falha inicial ocorrida, também podem sinalizar intenções de recompra dos consumidores junto a sites varejistas. / This dissertation aims to investigate factors that moderate the relationship between satisfaction with complaint handling and repurchase intention in online retail. More specifically, this research aims to examine whether the quality of the relationship constructs, resistance to change and inferred motive moderate the relationship between satisfaction with complaint handling and repurchase intention in online retail. To test such moderations, was taken an exploratory research stage through in-depth interviews in which it became clear that the proposed constructs could moderate the relationship between the independent and dependent variables of this dissertation, as well as the variable economic value was added as a possible moderator of the relationships between satisfaction with complaint handling and repurchase intention. Then, to test the hypotheses was applied a survey with online consumers (N=500) from United States, through Qualtrics and Mechanical Turk. The results indicate that the relationship quality, the inferred motive and the perceived economic value moderated the relationship between satisfaction with complaint handling and repurchase intention in online retail. It is emphasized that the dimensions of relationship quality (satisfaction, trust and commitment) suggested in this study also moderated, in an individual way, the relationship between the independent and dependent variables of this study. Thus, this dissertation has contributed to the literature of marketing and e-commerce by showing that both the relationship quality as well as the dimensions (satisfaction, trust and commitment) moderate the relationship between satisfaction with complaint handling and repurchase intention. Furthermore, it is evident that the high perceived economic value, and the motive inferred by customers (if positive), facing the initial failure occurred, can also indicate repurchase intentions of consumers with online retailers.

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