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The h index is a widely used indicator to quantify an individual's scientific research output. But it has been criticized for its insufficient accuracy—the ability to discriminate reliably between meaningful amounts of research output. As a single measure it cannot capture the complete information on the citation distribution over a scientist's publication list. An extensive data set with bibliometric data on scientists working in the field of molecular biology is taken as an example to introduce two approaches providing additional information to the h index: (1) h2 lower, h2 center, and h2 upper are proposed, which allow quantification of three areas within a scientist's citation distribution: the low impact area (h2 lower), the area captured by the h index (h2 center), and the area of publications with the highest visibility (h2 upper). (2) Given the existence of different areas in the citation distribution, the segmented regression model (sRM) is proposed as a method to statistically estimate the number of papers in a scientist's publication list with the highest visibility. However, such sRM values should be compared across individuals with great care. 相似文献
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The scientific impact of a publication can be determined not only based on the number of times it is cited but also based on the citation speed with which its content is noted by the scientific community. Here we present the citation speed index as a meaningful complement to the h index: whereas for the calculation of the h index the impact of publications is based on number of citations, for the calculation of the speed index it is the number of months that have elapsed since the first citation, the citation speed with which the results of publications find reception in the scientific community. The speed index is defined as follows: a group of papers has the index s if for s of its Np papers the first citation was at least s months ago, and for the other (Np ? s) papers the first citation was ≤s months ago. 相似文献
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Diane D. Allen Jeanne B. Cobb Susan Danger 《Mentoring & Tutoring: Partnership in Learning》2013,21(2):177-182
This qualitative study examined the impact of mentoring relationships upon preservice and inservice teachers' literacy instruction. Twenty-two undergraduate students seeking teacher certification were assigned in pairs to tutor primary school students in a university reading clinic. Eleven classroom teachers seeking reading specialist certification conducted ten mentoring sessions with each pair of preservice teachers. Purposeful sampling was used to select three of the mentoring teams for data analysis. In two out of three teams, results indicated that preservice teachers expanded their instructional strategies as a result of three components of the mentoring relationship: selection of strategies, organization, and non-judgmental support. All inservice teachers reported increased reflection on and adaptation to their instructional strategies. Findings support the conclusion that early mentoring experiences foster growth for both preservice and inservice teachers. 相似文献
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Jeanne B. Stinchcomb 《Journal of Criminal Justice Education》2013,24(2):463-478
As conservative political ideologies have shifted U.S. correctional policies toward a justice model orientation, efforts to escalate the “pains of imprisonment” have become increasingly prevalent. Although these attempts to enhance the punishing aspects of incarceration are primarily driven by political grandstanding and emotional appeal, it is not uncommon for today's postsecondary students to enter the classroom with punitive attitudes similarly based on rhetoric and emotion. Yet correctional students cannot be expected to develop an empathetic appreciation for the intrinsically punishing nature of confinement itself through traditional classroom techniques that rely exclusively on the cognitive dimensions of learning. In an effort to broaden personal perspectives on punishment by engaging the affective domain, students in an introductory corrections class participated in a simulated 48-hour confinement exercise. The intent was to enhance empathy for the intrinsic discomfort of imprisonment through experiential learning. The results not only point clearly in that direction, but also manifest parallels with the actual pains of confinement experienced by inmates in the real world. 相似文献
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Jeanne M. Powers 《Equity & Excellence in Education》2013,46(4):467-481
This article documents the efforts by Mexican Americans to challenge school segregation in Arizona in the first half of the twentieth century. As in Texas and California, although state law never formally mandated the segregation of Mexican American students, school districts in Arizona often established separate “Mexican Schools” for Mexican American students. While districts argued that segregation was necessary because of students' poor English skills, the segregation of Mexican American students in Arizona's public schools was not an isolated practice but occurred in tandem with other discriminatory practices that restricted the social rights of Mexican Americans, many of whom were American citizens. However, Mexican Americans challenged segregation in the courts. Notably, in Gonzales v. Sheely, a case heard in the United States District Court of Arizona in 1950, Judge Dave Ling declared segregation unconstitutional over three years before the Supreme Court's historic decision in Brown v. Board (1954). 相似文献
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Wyoma vanDuinkerken Jane Smith Jeanne Harrell Leslie J. Reynolds Sandra Tucker Esther Carrigan 《Library Collections, Acquisitions, and Technical Services》2008,32(3-4):142-149
This paper describes the Texas A&M University (TAMU) Libraries' new and innovative approach to monograph collection development using a re-engineered internal funding structure and a process that reflects the needs and goals of the library and its users. The paper discusses the goals of the new fund structure, the experience of implementing it, and the results after one year in use. 相似文献
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