183,103 research outputs found
The Rational Locator: Why Travel Times Have Remained Stable
No full textThis paper evaluates household travel surveys for the Washington metropolitan region conducted in 1968 and 1988, and shows that commuting times remain stable or decline over the twenty year period despite an increase in average travel distance, after controlling for trip purpose and mode of travel. The average automobile work-to-home time of 32.5 minutes in both 1968 and 1988 is, moreover, very consistent with a 1957 survey showing an average time of 33.5 minutes in metropolitan Washington. Average trip speeds increased by more than 20 percent, countering the effect of increased travel distance. This change was observed during a period of rapid suburban growth in the region. With the changing distributional composition of trip origins and destinations, overall travel times have remained relatively constant. The hypothesis that jobs and housing mutually co-locate to optimize travel times is lent further support by these data. .
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.
sj-pdf-1-jmx-10.1177_00222429221138302 - Supplemental material for Secondary Selling: Beyond the Salesperson–Customer Dyad
No full textSupplemental material, sj-pdf-1-jmx-10.1177_00222429221138302 for Secondary Selling: Beyond
the Salesperson–Customer Dyad by Molly R. Burchett, Brian Murtha and Ajay K. Kohli in Journal of Marketing</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
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
Electrodeposition of highly active lithium cobalt oxide thin film anodes in platinum metal group-free photoelectrochemical cells
No full textIn the development of high-performance, commercially-scalable photoelectrochemical cells (PECs) for solar-driven hydrogen production, effective and low-cost anodes must be engineered for long-term operation in alkaline solution. Lithium cobalt oxide (LiCoO2) has been studied as a highly active and stable catalyst for the anodic oxygen evolution reaction (OER) in its delithiated cubic spinel polymorph, LiCo2O4. Drawing inspiration from the dimensionally stabilized anode (DSA) configuration used for continuous electrochemical chlorine generation, a thin film of LixCoO2 has been electrodeposited onto a passivated TiOx/Ti support for functional integration as the dark anode in the PEC device. Kinetic performance as evaluated by cyclic and linear sweep voltammetry resulted in geometric current densities of 10 mA/cm2 (corresponding to 10% photoelectrochemical conversion) achieved at 430 mV overpotential. Long-term stability measurements evaluated at 10 mA/cm2 demonstrate continuous operation for up to 13 days with minimal loss in activity. Characterization via x-ray diffraction, x-ray photoelectron spectroscopy, and scanning electron microscopy coupled with electron dispersive spectroscopy give insight into the structure-property relationships responsible for the measured high electrochemical performance.M.S.Includes bibliographical referencesby Ajay R. Kash
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
Relationship between firm valuation, business practices and earnings management: a meta-analysis / Ajay Ranjitha and R Madhumathi.
No full textThe objective of this paper is to meta-analyze the result of relevant literature capturing the relationship measured in terms of correlation coefficient between valuation and earnings management; business practices (corporate governance) and earnings management; select business practices (financial constraints, credit quality, diversification strategy, product market compeition) and earnings management. We examined 30 empirical studies for the period 2006 to 2015 reflecting 53 correlations among the variables. The result indicates that corporate governance measured using governance index, audit opinion, institutional ownership, family ownership, promoter ownership, dual share, board size, CEO duality and board index have a significant negative relationship with earnings management. This signifies that an effective governance mechanism reduces the extent of earnings management in the firm. The moderator analysis confirmed that the result is similar across different measures of earnings management. In addition, select business practices (product market competition, financial constraints, credit ratings, diversification strategy) show a significant negative relationship with earnings management
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