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31.
Increasing entrepreneurial activity within academia has raised concerns that the number of publications added to the scientific commons might be reduced or that academic research would be directed exclusively towards the application-oriented needs of industry. In the case of academic inventions, the potential conflict between public- and private-oriented considerations seems most salient. In this contribution, we examine whether the publication behavior of academic inventors (at K.U. Leuven) differs from their colleagues (non-inventors) working within similar fields of research. Our analysis reveals that inventors publish significantly more. Moreover, no empirical evidence was found for the ‘skewing problem’. These findings not only suggest the co-existence of both activities; they may actually reinforce each other.  相似文献   
32.
非负定方差阵下的证券组合投资决策模型研究   总被引:2,自引:0,他引:2  
何宜庆  王浣尘  何宜强 《预测》2001,20(6):54-55,77
在用于度量投资风险的方差阵为非负定时,本文建立并研究了允许卖空与不允许卖空情形下证券组合投资决策模型,同时给出了计算最优投资比例系数的方法。  相似文献   
33.
In this paper, we first deal with the robust stability of uncertain linear stochastic differential delay systems. The parameter uncertainties are time-varying and unknown but are norm-bounded via two types of uncertainties, and the delays are time invariant. We then extend the proposed theory to discuss the robust stabilization of uncertain stochastic differential delay systems. These results are given in terms of linear matrix inequalities. Two examples are presented to illustrate the effectiveness.  相似文献   
34.
Performance management systems have been an inevitable consequence of the development of government research evaluations (GREs) of university research, and have also inevitably affected the working life of academics. The aim of this paper is to track the development of GREs over the past 25 years, by critically evaluating their adoption in the UK and Australian higher education sector and their contribution to the commodification of academic labour, and to highlight the resultant tensions between GREs and academic freedom. The paper employs a literature-based analysis, relying on publicly available policy documents and academic studies over the period 1985–2010. GREs are a global phenomenon emanating from new public management reforms and while assessments of university research have been welcomed, they have attracted critique based on their design, the manner in which they have been applied, and the unintended consequences of their implementation on academic freedom in particular. Consistent with international research on the impact of GREs, Australian research assessments appear to be undoing the academic freedom that is central to successful research. Further empirical research on the impact of GREs on academics is urgently needed.  相似文献   
35.
Australian universities over the last 25 years have been unified, internationalised, corporatised and become mass educational providers. This process is replicated globally as a response to rapid mass enrolments and marketisation. In the light of these changes, a corporate and managerial model has been identified, which has been the subject of growing discontent within the academic workforce. However, from a political economy perspective there is a lack of understanding on how and by what means academic labour has been commodified in this process. This paper, using Australia as its case study, argues that the managerial culture has alienated academics from their labour. This has resulted in them losing control over their skills and thus becoming disassociated from the educational purposes of their work. Higher education has been subjected to systemic regulatory governance that has fundamentally transformed the nature of academic labour. We contend that the regulatory state has reached so deep down into the university that academics have effectively become a de-professionalised and proletarianised labour force.  相似文献   
36.
The professionalisation of teaching is of increasing importance in UK higher education due to converging processes including the proliferation of managerialism, increasing quality agendas and changes to student fee structures. These have brought into sharp relief the need for greater understanding of how quality teaching evolves in university settings. One key element of this involves academic development and its impacts on teaching and learning. Current literature suggests that a plethora of ideas, frameworks and instruments claiming best practice exist but that take-up of these is inconsistent. This prompted a UK national research project which produced an evidence-based toolkit for evaluating academic development. As part of the toolkit augmentation, academic development representatives from across the sector were asked to create, review and test uniquely tailored evaluation instruments. These instruments were then piloted on university teachers who had participated in teaching-related continuing professional development activities. This paper reports on these individuals’ reflections of using the toolkit. It suggests that academic developers are interested in evaluating the impact of their work on teachers, students and on the wider institutional culture but that confidence and expertise varies. Using the toolkit generated ‘traditional’ evaluation data including satisfaction with the development activity and changes to lecturers’ conceptions and behaviours. However, it also prompted critical discussions around current evaluation practice. This included the need for transformational reform of institutional culture to support links between evaluation and good standing; and making explicit the thorny issue of evidencing student learning. This paper will be of interest to those with an interest or responsibility for evaluating teaching in higher education. The paper offers an important contribution to the international literature at a time when global higher education is faced with questions about teaching, learning and quality. Evaluation, and how to do it well, is timely and important business.  相似文献   
37.
The aim of the present study was to model student trajectories of behavioral, affective, and cognitive engagement from Grade 3 to Grade 6. The authors also examined whether teachers perceptions could predict student trajectory membership. The authors collected data from a sample of 831 students and 152 teachers. Using multiple-process growth mixture modeling, they identified 5 distinct trajectories of student engagement. Although a large majority of children presented a stable and high level of engagement on the three dimensions over time, more than one third of them showed a lower or changing level of engagement as the years progressed. These students were more likely to be boys and to be perceived by teachers as being less engaged. They also present more learning or behavioral problems and share less positive relationships with teachers. The results support the need to consider group-based differences when designing and adapting prevention and intervention strategies to favor student engagement.  相似文献   
38.
The present study was designed to explore the association between preschool academic skills and Grade 3 achievement among a sample of ethnically diverse children from low-income families. Data were collected from a sample of 1,442 low-income, ethnically diverse children in preschool and associated with Grade 3 achievement in reading and mathematics 4 years later. Mixed-effects modeling indicated that preschool skills significantly predicted Grade 3 achievement measures while controlling for various child-level factors and random school effects. While several preschool factors were predictive of Grade 3 achievement, writing/copying and counting/premathematics skills were consistently strong predictors of Grade 3 achievement across all measures and domains suggesting these are important foundational skills for academic success in midelementary school among low-income, ethnically diverse children. Findings also replicate studies demonstrating that writing plays an important role in learning and achievement. Findings have implications for early education policy and practice intended to support academic development among low-income, ethnically diverse children.  相似文献   
39.
It is conventionally assumed that student ratings perform a significant function in driving improvement in pedagogical practices in higher education. As a result, this form of evaluation has gradually become institutionalised in recent decades as an essential proxy for understanding teaching and course quality in universities across the world. However, with the rise of market-based models in higher education and heightened expectations for accountability mechanisms, the role and functional purpose of ratings-based student evaluation have become increasingly confused. This rising ambiguity has created strong tensions between the seminal drive of student ratings as a tool of quality improvement, and the emerging demands for its use as a transparent accountability measure for the comparative assessment of academic performativity. So are student ratings now largely a tool of quality assurance or performance measurement, or do they remain a legitimate tool for pedagogical improvement? This paper reports on a study that responded to this critical question by considering the contemporary work of student ratings in a major Australian university. The outcomes of this research demonstrate that tension between improvement and accountability motives is causing considerable confusion and discord around the role and value of the student voice. It also reveals that academics are tending to discount the often critical insights of students on the implications of their pedagogical practices as a result of the elevating institutional role of student ratings as a proxy for teaching quality. In considering these outcomes, rising levels of academic dissonance around student ratings would suggest a necessity to consider broadened evaluative strategies that are able to more effectively capture the improvement potential offered by the student voice.  相似文献   
40.
The Common Core State Standards Initiative has placed an increased focus on mathematics and English language arts. A relationship between physical activity and academic achievement is evident, but research on integration of academic subjects with physical education is still unclear. This literature review examined databases for the years 2004–2013, focusing on physical education or physical activity and core academic subjects for school-aged youth. 23 studies were found that focused on integration and physical education that met the inclusion criteria. These were from 16 different publication outlets, ranging in research methods, country, and population. This review provides information on the status of integration and physical education. Since classroom teachers are increasingly being encouraged to incorporate core subjects with physical activity into their classes, it would be appropriate for physical educators to understand the desired outcomes of integration of core subjects before attempting its implementation.  相似文献   
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