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31.
Providing for equality of educational opportunity at racially isolated schools continues to be an important area of concern for educational policy makers. Quality teachers to staff instruction programs at these schools is essential to promoting equal opportunity for minority groups. Unfortunately, these schools continue to suffer chronic teacher shortages. Recently, California implemented a teacher certification examination (CBEST) designed specifically to improve the quality of teachers entering the profession. An unintended consequence of the certification movement was the exacerbation of the teacher shortage problem at racially isolated schools. The purpose of this study is to examine the characteristics of teachers who passed and failed the CBEST. The study finds that failure rates are highest among minority teachers that are presently employed. The study also finds that the mathematics knowledge subscale scores best discriminate those passing from those failing the CBEST. An analytical approach for determining optimal cutoff scores on the CBEST which balances the need for certification with the problem of teacher shortage is proposed.  相似文献   
32.
Recently there has been a great amount of research and professional educator interest in at-risk, poor academically attaining students, especially low socioeconomic status students at U.S. inner-city schools. A major factor that has been hypothesized in the research literature as being associated with poor academic attainment is the lack of critical and timely instructional feedback or formative evaluation. Using a sample of 130 inner-city senior high school students, the perceived quality and quantity of formative evaluation received by these students at their elementary and secondary school levels were assessed. in addition, each student was given a mathematics (pre-algebra) assessment using both a one and two-dimensional format (recognition plus confidence) to determine present levels of mathematics attainment. Finally data were collected from the cumulative grade-level folders of a subset of these students, especially norm-referenced data (NRT) in mathematics, to examine their relationship to scores on the Scholastic Aptitude Test-Quantitiative portion. The study finds that in addition to extremely poor mathematics attainment and poor formative evaluation practices there is little association between SAT (quantitative) scores and the grade-level (mathematics) NRT scores. These findings suggest that parents cannot depend on traditional norm-referenced measures to indicate actual mathematics attainment as these students are progressing through the schools. These findings also challenge urban school administrative personnel to reassess the use of NRT measures to monitor student progress and to develop more comprehensive and systematic formative evaluation procedures and practices for individual students as they progress through each grade level.  相似文献   
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“Doing time” is an expression that is generally associated with prisoners who are disconnected from society and find themselves counting the days and minutes until their release from prison. In many respects, at-risk students attending our nation's large, urban, inner-city middle and high schools also consider themselves as not being connected to school or society and to be “doing time” in the classroom. Qualitative and subjective impressions of doing time at school have become the theme of many movies, books, and research articles. This study extends this qualitative type of research by quantitatively framing time allocation preferences and temporal dominance characteristics for a large sample of teacher-perceived “at-risk” students at several large urban high school sites. A sample of normal attaining students at the same school site served as a comparison group. The findings of this research effort generally support other more qualitative studies and indicate that there are strong preferences in at-risk students toward nondirected time-consuming activities (i.e., hanging out, video games, watching TV, etc.) with low-directed to nondirected time preference ratios. Normal attaining students had the reverse pattern, i.e., higher-directed to nondirected time preference ratios and higher preferences toward directed time-consuming activities that might be associated with investments in the schooling process (homework, studying, personal development, etc.). Interpretation of the circles test, a projective psychological procedure for establishing temporal dominance for at-risk students, revealed a general lack of recognition and connectiveness between past, present, and future events in their life and weak temporal dominance or orientation toward the future.  相似文献   
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Sustaining students in becoming reflective practitioners is considered as a valued outcome of higher education. The paper aims to evaluate the impact of the learning environment conditions inspired by Schön’s theory of reflective practicum, by discussing a case study of a master’s degree class. The learning environment was designed to sustain reflective practice and meaningful engagement through professional practice simulation, problem-based learning and reflective writing. Unlike much of the research into reflective learning, the quality of learning was evaluated by assessing the use of reflective practice in students’ weekly journaling, rather than measuring students’ satisfaction or perceptions of effectiveness. Two hundred and six journal entries of 23 students were assessed and used in a quantitative analysis based on a linear mixed-effects model. Findings indicated that the reflective practicum has an incremental effect on students’ reflective practices and that reflective practice is dynamic and sensitive to specific learning environment conditions. In conclusion, students’ co-responsibility of the learning environment allowed by the professional practice simulation appears to foster meaningful and reflective learning. Conversely, conditions that stimulate only cognitive engagement have little impact or even inhibit reflective practices. Practical implications of the use of reflective journal are discussed.  相似文献   
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Many higher education (HE) system reforms in the past decades have been built on the paradigm of New Public Management (NPM). However, these reforms have not allowed HE to fully take its value for society into account. In recent years a growing call can be heard to orient the HE sector towards more collaboration, a focus on a larger set of socio-economic objectives instead of on performance alone, less pressure, more trust and legitimacy. In this article, it is stated that NPM has not sufficiently enabled the creation of public value (PV) by the HE sector. This article provides (1) insight into the flaws of NPM, (2) an understanding of PV for HE and (3) a new model to study HE reforms built on the concept of PV.  相似文献   
38.
The paper examines the formation of clique-spanning ties in intra-corporate co-invention networks, by focusing on the impact of R&D unit spinouts. Using data on thirty-one spinouts in eight large U.S. information and communication technology corporations, we show that the reorganization of R&D units through corporate spinouts is associated with an increase in the extent to which inventors employed in the unit collaborate with inventors located in other cliques within the corporate co-invention network. Interestingly, the spinout effect spills over to all members of the clique of spun-out inventors, also including those who remain with the parent firm. The interpretation of these empirical findings, grounded on existing theories and on the views of inventors and executives involved in the reorganization events, suggests that corporate spinouts generate a shock in intra-corporate research collaboration dynamics, which loosens clique lock-in effects and contributes to reset cliques’ boundaries in the intra-corporate research network.  相似文献   
39.
To successfully generate more valuable technologies from accessing basic research knowledge, firms need to combine institutional and individual level bridges to universities and research institutes active in basic research. This combination is particularly important when the new technology builds on scientific prior art. While mobile inventors are needed to transfer and translate basic knowledge into new technologies, partnerships provide the commitment, resources and incentive structure to integrate this basic research knowledge more effectively into the firm’s innovation process, thus improving the value capture from mobile inventors. Our findings in the micro-electronics field illustrate the importance of jointly accounting for firm and inventor level industry-science links to assess their effectiveness and provides evidence on complementarity from using both. Furthermore, identifying the scientific nature of the technology projects critically determines whether the combination of these links allow to capture more value.  相似文献   
40.
This study was conducted to determine the effects of inspiratory muscle training (IMT) on respiratory and peripheral muscles oxygenation during a maximal exercise tolerance test and on repeated-sprint ability (RSA) performance in professional women football players. Eighteen athletes were randomly assigned to one of the following groups: SHAM (n = 8) or IMT (n = 10). After a maximal incremental exercise test, all participants performed (on a different day) a time-to-exhaustion (Tlim) test. Peripheral and respiratory muscles oxygenation by near-infrared spectroscopy, breath-by-breath ventilatory and metabolic variables, and blood lactate concentration were measured. The RSA test was performed on a grass field. After a 6 week intervention, all athletes were reevaluated. Both groups showed increases in inspiratory muscles strength, exercise tolerance and RSA performance, however only the IMT group presented lower deoxyhemoglobin and total hemoglobin blood concentrations on intercostal muscles concomitantly to an increased oxyhemoglobin and total hemoglobin blood concentrations on vastus lateralis muscle during Tlim. In conclusion, these results may indicate the potential role of IMT to attenuate inspiratory muscles metaboreflex and consequently improve oxygen and blood supply to limb muscles during high-intensity exercise, with a potential impact on inspiratory muscle strength, exercise tolerance and sprints performance in professional women football players.  相似文献   
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