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排序方式: 共有109条查询结果,搜索用时 15 毫秒
91.
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Gabriele B. Sweidel 《Disability & Society》1989,4(2):165-175
This study focuses on the communicative interactions of three nonvocal, physically disabled adults who use an augmentative device in place of speech with their vocal peers, teachers, families, and friends. Using an ethnographic perspective, audio-visual equipment and field notes were used to record interactions occurring in naturalistic settings. Three aspects of the communication interaction interfere systematically with the quality of the interaction: the perceptions of the nondisabled communication partners regarding disability; patterns of speech resembling adult-child interactions; and the unwillingness of some nondisabled people to communicate. Issues of power and control are suggested as possible causes. The success of the communication act may lie not in the sophistication of the augmentative device, but rather in the willingness of the communication partner to accept the nonvocal person as a capable communication partner. 相似文献
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In Germany, the share of the older population has been continuously growing. Is the increase paralleled by a rising number of frail people, however? In search of an answer, we analyse the development of care need incidence in West Germany between 1986 and 2005 on the basis of longitudinal data from the German Socio-Economic Panel (SOEP). The results show a lower transition risk to care need for each successive cohort when all degrees of care need are taken into account. However, no change occurs when only severe care need is measured. 相似文献
95.
Der Masterplan und sein Weg durch die Organisation 总被引:1,自引:1,他引:0
Gabriele Jacobs Jochen Christe-Zeyse Anne Keegan 《Gruppendynamik und Organisationsberatung》2007,38(3):282-294
Organizations in the public sector, like the German police, are under increasing pressure to change in the face of new challenges. We discuss the complexity of change projects based on qualitative interviews with future top managers in the police. It emerges that employees do not faithfully implement top down change plans. Instead, they subject change plans to various adaptations based on their active sense-making which is influenced by cognitive and behavioral patterns of the organizational members. These micro processes of change severely restrict the plan-ability of change projects. Flexible and reflective procedures are required to successfully manage change, as plans are more often adapted as their champions ever intended. 相似文献
96.
We show how to improve the efficiency of Markov Chain Monte Carlo (MCMC) simulations in dynamic mixture models by block-sampling the discrete latent variables. Two algorithms are proposed: the first is a multi-move extension of the single-move Gibbs sampler devised by Gerlach, Carter and Kohn (in J. Am. Stat. Assoc. 95, 819–828, 2000); the second is an adaptive Metropolis-Hastings scheme that performs well even when the number of discrete states is large. Three empirical examples illustrate the gain in efficiency achieved. We also show that visual inspection of sample partial autocorrelations of the discrete latent variables helps anticipating whether blocking can be effective. 相似文献
97.
Giuliano Galimberti Annamaria Manisi Gabriele Soffritti 《Statistics and Computing》2018,28(1):145-169
In the framework of cluster analysis based on Gaussian mixture models, it is usually assumed that all the variables provide information about the clustering of the sample units. Several variable selection procedures are available in order to detect the structure of interest for the clustering when this structure is contained in a variable sub-vector. Currently, in these procedures a variable is assumed to play one of (up to) three roles: (1) informative, (2) uninformative and correlated with some informative variables, (3) uninformative and uncorrelated with any informative variable. A more general approach for modelling the role of a variable is proposed by taking into account the possibility that the variable vector provides information about more than one structure of interest for the clustering. This approach is developed by assuming that such information is given by non-overlapped and possibly correlated sub-vectors of variables; it is also assumed that the model for the variable vector is equal to a product of conditionally independent Gaussian mixture models (one for each variable sub-vector). Details about model identifiability, parameter estimation and model selection are provided. The usefulness and effectiveness of the described methodology are illustrated using simulated and real datasets. 相似文献
98.
M. Kathryn Brohman Gabriele Piccoli Patrick Martin Farhana Zulkernine A. Parasuraman Richard T. Watson 《决策科学》2009,40(3):403-430
Customer service is a key component of a firm's value proposition and a fundamental driver of differentiation and competitive advantage in nearly every industry. Moreover, the relentless coevolution of service opportunities with novel and more powerful information technologies has made this area exciting for academic researchers who can contribute to shaping the design and management of future customer service systems. We engage in interdisciplinary research—across information systems, marketing, and computer science—in order to contribute to the service design and service management literature. Grounded in the design‐science perspective, our study leverages marketing theory on the service‐dominant logic and recent findings pertaining to the evolution of customer service systems. Our theorizing culminates with the articulation of four design principles. These design principles underlie the emerging class of customer service systems that, we believe, will enable firms to better compete in an environment characterized by an increase in customer centricity and in customers' ability to self‐serve and dynamically assemble the components of solutions that fit their needs. In this environment, customers retain control over their transactional data, as well as the timing and mode of their interactions with firms, as they increasingly gravitate toward integrated complete customer solutions rather than single products or services. Guided by these design principles, we iterated through, and evaluated, two instantiations of the class of systems we propose, before outlining implications and directions for further cross‐disciplinary scholarly research. 相似文献
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100.
Liana Giorgi Ronald Pohoryles Sabine Pohoryles‐Drexel Gabriele Schmid 《Innovation: The European Journal of Social Science Research》1992,5(3):25-37
The migration problem has acquired a new dimension with the breakdown of State‐Communism which has induced new and variable waves of migration out of Eastern Europe. The response of the West to these waves, as well as to the ever‐increasing likelihood of emigration from countries of the Third World has been one of mounting regulation. The present article critically juxtaposes the underlying, albeit short‐term, logic of regulation with that of East‐West migration — itself a highly variated and differentiated process — in an attempt to demarcate a more comprehensive approach to the East‐West migration subject. 相似文献