191,248 research outputs found
Management Matters
No full textNew indications of managerial innovations are created and then used to show that changes in organizational technologies are an important source of economic growth. Specifically, the analysis demonstrates that, first, in response to a positive managerial technology shock, output, productivity and hours significantly increase in the short run, second, these types of innovations are as important as non-managerial ones in explaining movements in these variables at business cycle frequencies, and, third, product and process innovations promote the development of new managerial techniques.Business Cycles; Productivity; Management techniques; Technical Change
Supplemental Material, sj-pdf-1-spr-10.1177_02654075211037740 - Justify my love: Cognitive dissonance reduction among perpetrators of online and offline infidelity
No full textSupplemental Material, sj-pdf-1-spr-10.1177_02654075211037740 for Justify my love: Cognitive dissonance reduction among perpetrators of online and offline infidelity by Cassandra Alexopoulos in Journal of Social and Personal Relationships</p
On the question of the calculation of migration volumes in ionic crystals
No full textThe migration volume vm consists of two contributions vms= - T(∂sm/∂P)|T and vhm = (∂hm/∂P)|T where ∂m, hm denote the migration entropy and enthalpy. By analysing the recent experimental data of Andeen, Hayden and Fontanella (1980) on SrF2 + Er+3, obtained by dielectric-loss techniques under various pressures, the term vsm is found to be a considerable contribution t o vm. At 330 K the ratio|vsm|vhm is 23%. Further the compressibility ∼m of the migration volume is found to exceed the bulk compressibility K by one order of magnitude. The application of a recent macroscopic model proposed by Varotsos and Alexopoulos (1978) not only explains that ∼m is appreciably larger than but it also leads t o a value of vsm/vhm appreciably different than zero. The common disagreement between the ‘static lattice’ calculations of vm and experiments lies in the fact that the contribution cannot be neglected. © 1980 Taylor &amp; Francis Group, LLC
Extracellular matrix associated with human luteininzing granulosa cells
No full textHuman granulosa cells (GC), prepared from follicular aspirates using a non-enzymic method, were maintained on chamber slides in a defined medium without additional attachment factors. In this system, GC clustered to a limited extend and attached only loosely to the substream necessitating medium replacement through repeated partial changes to avoid cell loss. Cell size and progesterone production increased consistently with continuing luteinization. These processes were associated with maintenance and deposition of the endogenous extracellular matrix components heparan sulphate proteoglycan and laminin (α2, β1, γ1 subunits) as shown by both Western blotting and immunohistochemistry. Collagen IV seemed to be present between freshly prepared GC and was maintained in culture. The addition of either epidermal growth factor (EGF) or basic fibroblast growth factor (bFGF) into the culture medium did not reveal any marked effect on deposition of laminin components during culture. Release of cell clusters, particularly in the absence of gonadotrophin, was noted during the later stages of culture, constituting the so-called 'lift off' phenomenon. This has been correlated with an increasing concentration of matrix metalloproteinases (MMP-2) in the culture medium during the culture period. To conclude, luteinization and maintenance of the GC-derived layer of the corpus luteum is likely to involve deposition and conservation of pericellular extracellular matrix components, actively synthesized by the GC themselves and controlled by the presence of gonadotrophin.</p
Prediction of the compressibility of mixed alkali halides
No full textA model has been recently proposed by Varotsos and Alexopoulos which permits the calculation of the compressibility kd of the volume of a defect from elastic properties of the surrounding lattice. This expression for kd in conjunction with the Born model, as modified by Smith and coworkers, permits the determination of the compressibility and its pressure dependence of an alkali halide mixed crystal. The application of the proposed method to the system KCl-KBr shows excellent agreement between the predicted and the experimental values obtained by Slagle and McKinstry and recently by Cain. © 1980
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
No full textWe 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
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