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51.
AbstractLibraries and vendors share change data to ensure successful discovery and access for users. Change data have increased dramatically and affected data communication, causing barriers to access. Serials data used to be simple: There were new, ceased, and title changes. Data were efficiently exchanged. Now data are complex and difficult to communicate in the digital age. This presentation will discuss the challenges of change data and the ways libraries and vendors are teaming up to calm the whirlwind of change. 相似文献
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Elder-Vass D 《The British journal of sociology》2008,59(3):455-473
Superficially, Actor Network Theory (ANT) and critical realism (CR) are radically opposed research traditions. Written from a realist perspective, this paper asks whether there might be a basis for finding common ground between these two traditions. It looks in turn at the questions of realism, structure, and agency, analysing the differences between the two perspectives and seeking to identify what each might learn from the other. Overall, the paper argues that there is a great deal that realists can learn from actor network theory; yet ANT remains stunted by its lack of a depth ontology. It fails to recognize the significance of mechanisms, and of their dependence on emergence, and thus lacks both dimensions of the depth that is characteristic of critical realism's ontology. This prevents ANT from recognizing the role and powers of social structure; but on the other hand, realists would do well to heed ANT's call for us to trace the connections through which structures are constantly made and remade. A lack of ontological depth also underpins ANT's practice of treating human and non-human actors symmetrically, yet this remains a valuable provocation to sociologists who neglect non-human entities entirely. 相似文献
54.
Eva Krumhuber Antony S. R. Manstead Darren Cosker Dave Marshall Paul L. Rosin 《Journal of Nonverbal Behavior》2009,33(1):1-15
We examined the effects of the temporal quality of smile displays on impressions and decisions made in a simulated job interview.
We also investigated whether similar judgments were made in response to synthetic (Study 1) and human facial stimuli (Study
2). Participants viewed short video excerpts of female interviewees exhibiting dynamic authentic smiles, dynamic fake smiles,
or neutral expressions, and rated them with respect to a number of attributes. In both studies, perceivers’ judgments and
employment decisions were significantly shaped by the temporal quality of smiles, with dynamic authentic smiles generally
leading to more favorable job, person, and expression ratings than dynamic fake smiles or neutral expressions. Furthermore,
authentically smiling interviewees were judged to be more suitable and were more likely to be short-listed and selected for
the job. The findings show a high degree of correspondence in the effects created by synthetic and human facial stimuli, suggesting
that temporal features of smiles similarly influence perceivers’ judgments and decisions across the two types of stimulus.
相似文献
Eva KrumhuberEmail: |
55.
Dhaval?M.?Dave Hope?CormanEmail author Nancy?E.?Reichman 《Journal of Labor Research》2012,33(2):251-282
Education beyond traditional ages for schooling is an important source of human capital acquisition among adult women. Welfare
reform, which began in the early 1990s and culminated in the passage of the Personal Responsibility and Work Opportunity Reconciliation
Act in 1996, promoted work rather than education acquisition for this group. Exploiting variation in welfare reform across
states and over time and using relevant comparison groups, we undertake a comprehensive study of the effects of welfare reform
on adult women’s education acquisition. We first estimate effects of welfare reform on high school drop-out of teenage girls,
both to improve upon past research on this issue and to explore compositional changes that may be relevant for our primary
analyses of the effects of welfare reform on education acquisition among adult women. We find that welfare reform significantly
reduced the probability that teens from disadvantaged families dropped out of high school, by about 15%. We then estimate
the effects of welfare reform on adult women's school enrollment and conduct numerous specification checks, investigate compositional
selection and policy endogeneity, explore lagged effects, stratify by TANF work incentives and education policies, consider
alternative comparison groups, and explore the mediating role of work. We find robust and convincing evidence that welfare
reform significantly decreased the probability of college enrollment among adult women at risk of welfare receipt, by at least
20%. It also appears to have decreased the probability of high school enrollment among this group, on the same order of magnitude.
Future research is needed to determine the extent to which this behavioral change translates to future economic outcomes. 相似文献
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Environmental issues have become a hot topic recently, especially those surrounding industrial outputs. Effluents, emissions, outflows, by-products, waste materials, product de-commissioning, land reclamation and energy consumption are all the subject of monitoring, either under new legislation or through economic necessity. Many types of environmental data are often difficult to understand or measure because of their unusual distribution of values however. Standard methods of monitoring these data types often fail or are unwieldy. The scarcity of events, small volume measurements and the unusual time scales sometimes involved add to the complexity of the task. One recently developed monitoring technique is the Summed Rank Cusum (SRC) that applies non-parametric methods to a standard chart. The SRC can be used diagnostically and this paper describes the application of this new tool to three data sets, each derived from a different problem area. These are measuring industrial effluent, assessing the levels of potentially harmful proteins produced by an industrial process and industrial land reclamation in the face of harmful waste materials. The use of the SRC to spot change points in time retrospectively is described. The paper also shows the use of SRC in the significant-difference testing mode, which is applied via the use of spreadsheets. Links to other similar methods described in the literature are given and formulae describing the statistical nature of the transformation are shown. These practical demonstrations illustrate that the graphical interpretation of the method appears to help considerably in practice when trying to find time-series change points. The charts are an effective graphical retrospective monitoring technique when dealing with non-normal data. The method is easy to apply and may help considerably in dealing with environmental data in the industrial setting when standard methods are not appropriate. Further work is continuing on the more theoretical aspects of the method. 相似文献
59.
This paper discusses two problems, which can occur when using central composite designs (CCDs), that are not generally covered in the literature but can lead to wrong decisions-and therefore incorrect models-if they are ignored. Most industrialbased experimental designs are sequential. This usually involves running as few initial tests as possible, while getting enough information as is needed to provide a reasonable approximation to reality (the screening stage). The CCD design strategy generally requires the running of a full or fractional factorial design (the cube or hypercube) with one or more additional centre points. The cube is augmented, if deemed necessary, by additional experiments known as star-points. The major problems highlighted here concern the decision to run the star points or not. If the difference between the average response at the centre of the design and the average of the cube results is significant, there is probably a need for one or more quadratic terms in the predictive model. If not, then a simpler model that includes only main effects and interactions is usually considered sufficient. This test for 'curvature' in a main effect will often fail if the design space contains or surrounds a saddle-point. Such a point may disguise the need for a quadratic term. This paper describes the occurrence of a real saddle-point from an industrial project and how this was overcome. The second problem occurs because the cube and star point portions of a CCD are sometimes run as orthogonal blocks. Indeed, theory would suggest that this is the correct procedure. However in the industrial context, where minimizing the total number of tests is at a premium, this can lead to designs with star points a long way from the cube. In such a situation, were the curvature test to be found non-significant, we could end with a model that predicted well within the cube portion of the design space but that would be unreliable in the balance of the total area of investigation. The paper discusses just such a design, one that disguised the real need for a quadratic term. 相似文献
60.
Despite career satisfaction models being well established, little is understood about the career satisfaction of indigenous employees. Using a sample of 172 Maori employees, the indigenous people of New Zealand, we tested a career satisfaction model with a cultural wellbeing factor over and above established factors of human capital, sociodemographic, individual differences and organizational sponsorship. This new measure workplace cultural wellbeing was found to significantly relate to career satisfaction, accounting for twenty-three percent of the variance over and above the established factors which highlights its importance for indigenous workers. Furthermore, due to collectivistic orientations amongst Maori, collectivism was tested as a potential moderator and found to significantly interact with workplace cultural wellbeing, showing that Maori respondents reported the greatest career satisfaction when workplace cultural wellbeing was high, irrespective of collectivism orientation. This paper offers an extended model for exploring career satisfaction of indigenous workers. 相似文献