177,286 research outputs found
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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Autophagy is inhibited by ubiquitin ligase activity in the nervous system
No full textAutophagy is an intracellular catabolic process prominent in starvation, aging and disease. Neuronal autophagy is particularly important, as it affects the development and function of the nervous system, and is heavily implicated in neurodegenerative disease. Nonetheless, how autophagy is regulated in neurons remains poorly understood. Using an unbiased proteomics approach, we demonstrate that the primary initiator of autophagy, the UNC-51/ULK kinase, is negatively regulated by the ubiquitin ligase RPM-1. RPM-1 ubiquitin ligase activity restricts UNC-51 and autophagosome formation within specific axonal compartments, and exerts effects broadly across the nervous system. By restraining UNC-51 activity, RPM-1 inhibits autophagosome formation to affect axon termination, synapse maintenance and behavioral habituation. These results demonstrate how UNC-51 and autophagy are regulated subcellularly in axons, and unveils a mechanism for restricting initiation of autophagy across the nervous system. Our findings have important implications beyond nervous system development, given growing links between altered autophagy regulation and neurodegenerative diseases
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
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
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
Arbitrary Deprivation of an Unregistered Credit Provider's Right to Claim Restitution of Performance Rendered: Opperman v Boonzaaier (24887/2010) 2012 ZAWCHC 27 (17 April 2012) and National Credit Regulator v Opperman 2013 2 SA 1 (CC)
No full textThe Constitutional Court in National Credit Regulator v Opperman confirmed the Cape High Court's decision in Opperman v Boonzaaier to declare section 89(5)(c) of the National Credit Act unconstitutional. Therefore, the forfeiture to the state of an unregistered creditor provider's right to claim restitution of monies advanced in terms of an unlawful (and void) credit agreement, was held to amount to an arbitrary deprivation of property in contravention of section 25(1) of the Constitution – the property clause. The provision in effect prohibited courts from deviating from the common law's strict par delictum rule in as far as the effects of unlawful contracts are concerned, the result being that creditors could not retrieve any of the amounts extended to the debtor, despite there being no turpitude or bad faith present. The purpose of this provision was to discourage the concluding of unlawful credit agreements – for instance, agreements concluded by unregistered credit providers – so as to protect consumers against unscrupulous behaviour. Although the broad purposes of the Act are undeniably valid, the Court held that there was no "sufficient reason" for the effects that the Act had in this case, since the credit provider in question was not guilty of the behaviour that the Act tried to combat. In other words, the effects of the Act were over-broad and not proportionate to its stated purposes. This case note comprehensively analyses these decisions in view of interpreting the "confused and confusing" wording of section 89(5)(c), with a specific focus on the application of the section 25(1) non-arbitrariness test. Reference is also made to the earlier judgments in the matter of Cherangani Trade and Investment 107 (Edms) Bpk v Mason. The Opperman decisions illustrate well how the non-arbitrariness test should be conducted in consitutional property cases generally but particularly also in the credit context. Of significance is the fact that the Court for the first time recognised that personal rights sounding in money (an enrichment claim in this instance) should qualify as "property" for constitutional property law purposes. In certain circumstances, therefore, credit regulation may involve deprivation of property such as must satisfy the requirements of the property clause. It is contended that recognising the role of section 25 in the credit context is a positive development that can be explored further. The constitutional provision also calls for lawmakers to draft legislation in such a way that regulatory mechanisms are rational and sufficiently proportionate to its stated goals
Liftings for noncomplete probability spaces
No full textThe current state of knowledge concerning liftings for noncomplete probability spaces is discussed. This is a somewhat expanded version of the author's talk given at the 1991 Summer Conference on General Topology and Applications in Honor of Mary Ellen Rudin and Her Work.PT: S; CR: BURKE MR, IN PRESS P AM MATH S BURKE MR, 1991, ISRAEL J MATH, V73, P33 BURKE MR, 1992, ISRAEL J MATH, V79, P289 CARLSON T, THEOREM LIFTING CHRISTENSEN JPR, 1974, TOPOLOGY BOREL STRUC FREMLIN DH, 1989, HDB BOOLEAN ALGEBRAS, P877 INOESCUTULCEA A, 1966, 5TH P BERK S MATH ST, V2 IONESCUTULCEA A, 1967, CONTRIBUTIONS PROB 1, P63 IONESCUTULCEA A, 1969, TOPICS THEORY LIFTIN JECH TJ, 1978, SET THEORY JOHNSON RA, 1980, P AM MATH SOC, V80, P234 JUST W, IN PRESS T AM MATH S KUPKA J, 1983, INDIANA U MATH J, V32, P717 LOSERT V, 1983, LNM, V1080, P95 MAHARAM D, 1958, P AM MATH SOC, V9, P987 SHELAH S, 1983, ISRAEL J MATH, V45, P90 TALAGRAND M, 1982, P AM MATH SOC, V84, P379 VONNEUMANN J, 1931, CRELLES J MATH, V165, P109; NR: 18; TC: 0; J9: ANN N Y ACAD SCI; PG: 4; GA: BZ86BSource type: Electronic(1
A metaphorical characterization of D.J. Opperman's Komas uit 'n bamboesstok in terms of relevance theory and the contemporary theory of metaphor
No full textIncludes abstract.Includes bibliographical references (leaves 188-198).Similar to previous academic papers on the topic of relevance, this dissertation too responds to specific claims proposed by relevance theory. The relevance-theoretic account of the recovery of metaphorical interpretations is of particular interest and is considered relative to the assertions of Lakoff and Johnson (1980, 1999) and Lakoff and Turner (1989), proponents of the cognitive linguistic approach to metaphor. The study has three distinct parts. It firstly explores the treatment of metaphor within the framework of Relevance Theory. Secondly, it argues via the assertions of the Contemporary Theory of Metaphor that the relevance-theoretic treatment of metaphor is in violation of one of its fundamental claims about cognition, namely, that human cognition tends to be geared to the maximization of relevance. Thirdly the salience of the cognitive-linguistic view of metaphor is illustrated through the metaphorical characterisation of D.J. Opperman’s (1979) volume of poetry, Komas uit ‘n bamboesstok
Planning dam portfolios for low sediment trapping shows limits for sustainable hydropower in the Mekong
No full textISSN:2375-254
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