1,720,967 research outputs found
Personality and the prediction of work performance : artificial neural networks versus linear regression
Get PDFPrevious research that has evaluated the effectiveness of personality variables
for predicting work performance has predominantly relied on methods designed to
detect simple relationships. The research reported in this thesis employed artificial
neural networks a method that is capable of capturing complex nonlinear and
configural relationships among variables and the findings were compared to those
obtained by the more traditional method of linear regression.
Six datasets that comprise a range of occupations, personality inventories, and
work performance measures were used as the basis of the analyses. A series of studies
were conducted to compare the predictive performance of prediction equations that a)
were developed using either artificial neural networks or linear regression, and b)
differed with respect to the type and number of personality variables that were used as
predictors of work performance. Studies 1 and 2 compared the two methods using
individual personality variables that assess the broad constructs of the five-factor model
of personality. Studies 3 and 4 used combinations of these broad variables as the
predictors. Study 5 employed narrow personality variables that assess specific facets of
the broad constructs. Additional methodological contributions include the use of a
resampling procedure, the use of multiple measures of predictive performance, and the
comparison of two procedures for developing neural networks.
Across the studies, it was generally found that the neural networks were rarely
able to outperform the simpler linear regression equations, and this was attributed to the
lack of reliable nonlinearity and configurality in personality-work performance
relationships. However, the neural networks were able to outperform linear regression
in the few instances where there was some independent evidence of nonlinear or
configural relationships. Consequently, although the findings do not support the
usefulness of neural networks for specifically improving the effectiveness of personality
variables as predictors of work performance, in a broader sense they provide some
grounds for optimism for organisational researchers interested in applying this method
to investigate and exploit complex relationships among variables
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Cognitive beliefs and positive emotions about change: Relationships with employee change readiness and change-supportive behaviors
No full textResearch has focused on individuals’ beliefs about change when considering the antecedents of employee change readiness. Our study is unique as we identify beliefs and positive emotions about change as proximal antecedents of change readiness. In Study 1, a cross-sectional study of 252 government workers, measures of change beliefs, positive emotions about change and change readiness were developed and tested. Study 1 examined relationships between these constructs. In Study 2, we collected data at two time points separated by 3 months from 199 employees. Study 2 examined the direct and indirect relationships among change beliefs, positive emotions about change, change readiness and change-supportive behaviors. Structural equation modeling results provided support for the validity of our measures. In both studies, cognitive beliefs about change and positive emotions about change were significantly associated with change readiness. Study 2 provided support for indirect and direct relationships between change beliefs and positive emotions and change behaviors. An implication of this research is that failure to consider positive emotions about change means ignoring a key source of variation in change readiness. Practically, results suggest a need to develop both change beliefs and positive emotions about change to enhance employees’ change readiness and change-supportive behaviors.Full Tex
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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