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121.
Assistant Professor Hsin‐Hua Hsiung Wei‐Chi Tsai 《Journal of Occupational & Organizational Psychology》2009,82(1):89-112
This study proposed that leader–member exchange (LMX) might encourage an employee to define job breadth close to or beyond the level of his/her supervisor's expectation (enlargement effect), while simultaneously fostering a reduction in supervisor–subordinate definition discrepancy on job content (congruence effect). Using data from 184 subordinate–supervisor dyads in Taiwan, we examined the relationships among LMX, job definition discrepancy, in‐role/extra‐role behaviour, and performance rating. Results showed that LMX was positively related to employee relative job breadth and the supervisor–subordinate congruence on job content, supporting the existence of enlargement effect and congruence effect. Additionally, employee relative job breadth was positively related to extra‐role behaviour and the congruence on job content was positively related to in‐role behaviour. However, neither in‐role nor extra‐role behaviour was related to performance rating. Theoretical and practical implications are discussed. 相似文献
122.
This paper describes the automatic assignment of images into classes described by individual keywords provided with the Corel
data set. Automatic image annotation technology aims to provide an efficient and effective searching environment for users
to query their images more easily, but current image retrieval systems are still not very accurate when assigning images into
a large number of keyword classes. Noisy features are the main problem, causing some keywords never to be assigned to their
correct images. This paper focuses on improving image classification, first by selection of features to characterise each
image, and then the selection of the most suitable feature vectors as training data. A Pixel Density filter (PDfilter) and
Information Gain (IG) are proposed to perform these respective tasks. We filter out the noisy features so that groups of images
can be represented by their most important values. The experiments use hue, saturation and value (HSV) colour feature space to categorise images according to one of 190 concrete keywords or subsets of these. The study
shows that feature selection through the PDfilter and IG can improve the problem of spurious similarity.
相似文献
Chih-Fong TsaiEmail: |
123.
As people working in groups might fare better in solving complex problems than those working alone (e.g., Laughlin, Hatch, Silver, & Boh, Journal of Personality and Social Psychology, 90 , 2006 and 644), organizations have increasingly assigned creative projects to groups. Group members contribute their collective efforts over time until the creative project has come to fruition. Although mood is identified as an important antecedent to creativity, little is known about the temporal pattern of how group mood enhances or inhibits group creativity, as well as the underpinning group process that explains the mood—creativity link in groups. We set out to address these questions by taking a within-group approach to study the temporal trends of how group mood precedes group creativity and to examine idea contribution equality (ICE) as a mediating group process. We conducted a three-wave longitudinal study among student workgroups tasked to complete a creativity project over a 1-month span. Evidence showed that positive mood is positively associated with concurrent ICE and negative mood is negatively associated with lagged ICE. Furthermore, a mediation model showed that negative mood eventually hampered expert-rated group creative performance by reducing ICE over time. These findings add new knowledge to the temporal mood—creativity relation within the group context. 相似文献
124.
Sex Roles - For the present study, we developed a television (TV) drama-based media literacy program for Taiwanese adolescents. A quasi-experimental design was used to determine the effects of the... 相似文献
125.
Rung-Ching Tsai 《Psychometrika》2000,65(2):233-240
It is well-known that the representations of the Thurstonian Case III and Case V models for paired comparison data are not unique. Similarly, when analyzing ranking data, other equivalent covariance structures can substitute for those given by Thurstone in these cases. That is, we may more broadly define the family of covariance structures satisfying Case III and Case V conditions. This paper introduces the notion of equivalence classes which defines a more meaningful partition of the covariance structures of the Thurstonian ranking models. In addition, the equivalence classes of Case V and Case III are completely characterized. 相似文献
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128.
This research examined both the effects of various corporate image dimensions on organizational attractiveness and the moderating effects of applicant individual difference variables on the aforementioned relationships. Two studies were conducted for this research, which involved 40 bank samples and 360 student participants ( Study 1 ) and 538 employee–student mixed samples ( Study 2 ). By implementing different research designs, samples, and industry targets in the two studies, we found that corporate product image, corporate citizenship image, and corporate credibility image were important antecedents to organizational attractiveness. One of the proposed applicant individual difference variables, environmental sensitivity, was found to moderate the relationship between corporate citizenship image and organizational attractiveness. 相似文献
129.
Both direct placement in supported community housing and pre-treatment with time-limited residential treatment are used as approaches to helping chronically homeless adults exit from homelessness but relative effectiveness and cost remains untested. The current observational study utilized data from a national, multi-site housing project to determine whether clients who receive residential treatment or transitional housing before being placed into independent housing achieve superior outcomes than clients who are immediately placed into independent housing, and whether they incur greater healthcare costs. A total of 709 participants (131 and 578 participants in the respective groups) were assessed every 3 months for 2 years on housing outcomes, community adjustment, work and income, mental and physical health, and health service costs. Clients who received immediate, independent housing had more days in their own place, less days incarcerated, and reported having more choice over treatment; but no differences on other clinical or community adjustment outcomes. In this observational study, there were no clinical advantages for clients who had residential treatment or transitional housing prior to entry into community housing, but they incurred higher substance abuse service costs. Studies using randomized controlled trials of these conditions are needed to establish causation. 相似文献
130.