Improving GIS Consultations： A Case Study at Yale University Library     

张文德 《数字图书馆论坛》2006,(12):77-77

面向服务的体系结构、对等网络和网格技术的发展为数宇图书馆体系结构的研究和应用带来了新的机遇，使其在开放性和柔性方面的拓展成为可能。下一代数字图书馆应当是能为更多用户服务的、自适性更强的服务组织，它是以联邦模式进行资源库的构建和服务的组织。与传统数字图书馆相比，下一代数字图书馆的体系结构将更为分布和动态，从而适应资源库、元数据和服务所呈现出的高度异构性。  相似文献   

In memoriam: William W. Brickman     

Abraham J. Tannenbaum 《Roeper Review》2013,35(4)

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Inquiry skill measures     

Miles A. Nelson  Eugene C. Abraham 《科学教学研究杂志》1973,10(4):291-297

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The questionable role of higher education as an occupational screening device     

Abraham E. Haspel 《Higher Education》1978,7(3):279-294

Employers optimally pursue activities which facilitate the coordinating of employee characteristics and the requirements of the job. One allegedly important employee characteristic is the level of education. Employees with higher levels of education are rewarded with higher wages than employees with lower levels. This may occur if higher levels of education make an employee truly more productive or if because of an employer's beliefs only those individuals with higher levels of education are allowed to enter the higher paying positions (occupational screening).The above propositions are testable, depending crucially upon the theoretical model employed for determining occupational choices. We shall compare the implications of two possible occupation choice models: (1) enter the job which offers the highest lifetime income, (2) enter the job which offers the highest level of overall satisfaction. We estimate these two models using the NBER-TH data sample. By distributing our estimated results and the actual distribution of occupations over the education levels of high school, some college and BA we can see if more or less people are expected to enter specific occupations at each education level. Support for screening exists if more people are expected in high status occupations at low education levels than are actually in those occupations.When comparing the estimated results for each model we see different outcomes emerge. The latter indicates that screening does not exist while the former does. We present arguments as to why we feel that the second model is the more correct and appropriate and, consequently, why we feel that education is not an effective screening device.  相似文献   

The necessity of each phase of the learning cycle in teaching high school physics     

John W. Renner  Michael R. Abraham  Howard H. Birnie 《科学教学研究杂志》1988,25(1):39-58

The learning cycle is a method of teaching—it is also a curriculum organization principle and is derived directly from the mental functioning model invented by Piaget. Although Jean Piaget contributed to the formation of the learning cycle (Piaget, 1973), its present structure has to be attributed to Dr. Robert Karplus and the persons who developed the materials of the Science Curriculum Improvement Study (SCIS). It was through the SCIS activities that many of us learned how to develop curricula and teach with the learning cycle. The learning cycle is built upon the premise that three distinct phases are necessary in developing understanding of a concept, that those phases have a definite sequence, and each phase has a definite structure or form. The research done in testing the form variable has already been reported in this journal (Renner, Abraham, & Birnie, 1985). This report explores whether or not each learning-cycle phase is necessary in learning a concept.  相似文献   

A SYSTEMIC,STUDENT-CENTERED STUDY OF UNIVERSITY SERVICE   总被引：1，自引：0，他引：1  

Brenders  David A.  Hope  Peter  Ninnan  Abraham 《Research in higher education》1999,40(6):665-685

This paper discusses the methods and findings ofthe Student Focus Project, a sixmonth study of studentperceptions of service at a large university inBrisbane, Australia. The study paneled 24 focus groups of undergraduate students to assess theirbeliefs about a pretested set of questions concerningpositive and negative aspects of university life,successes and frustrations with university service,attempts to overcome the obstacles of university life,and what students expect from their relationship to theuniversity. Of the themes identified in the StudentFocus study, it was found that malignantbureaucracy and the balkanization ofInformation are systemic factors that negativelyinfluence student perceptions of the quality ofuniversity service. It was also found that studentstrategies for service recovery can contribute to the overall confusion andpoor performance of university services.  相似文献   

Raised serum homocysteine levels in patients of coronary artery disease and the effect of vitamin B12 and folate on its concentration     

R Abraham  M Joseph John  R Calton  J Dhanoa 《Indian journal of clinical biochemistry : IJCB》2006,21(1):95-100

Homocysteine(Hcy) has been implicated as a novel risk factor of Coronary Artery Disease (CAD) among Asian Indians, but many studies done in India failed to reveal any direct correlation. It has also been reported that Folic acid and Vitamin B12 levels inversely affect serum levels of homocysteine. In this study, we looked at the levels of homocysteine among patients with CAD. The effect of Vitamin B12, Folate and other risk factors on homocysteine levels were also evaluated. Mean homocysteine levels in cases (22.81±13.9, n=70) were significantly higher (p=<0.001) than the controls (7.77±7.3, n=70). However no statistically significant correlation could be deduced between homocysteine Vitamin B12, and Folate. Cumulative analysis have indicated an increase in homocysteine levels among patients with CAD with every additional risk factor.  相似文献   

COLLEGE EDUCATORS AND THE RETIREMENT DECISION     

Lenard W. Kaye  Abraham Monk 《Educational gerontology》2013,39(5):543-555

Our findings from a survey study of retired educators (N – 373) confirm that reasons for the retirement decision have changed over time. Long‐term retirees were found to stress the influence of statutory imperatives in leaving the workplace, whereas the recently retired, and women in particular, were more likely to cite factors related to personal interest and life‐style. Results suggest that university personnel programs engaged in retirement life planning need to be responsive to retirees' changing needs.  相似文献   

Complacent and conflicting scientific expertise in British and American drug regulation: clinical risk assessment of triazolam     

Abraham J  Sheppard J 《Social studies of science》1999,29(6):803-843

This paper presents a case study in the production and interpretation of regulatory science, focusing on the conflicting British and American clinical risk assessments of triazolam (Halcion) - the most controversial sleeping pill in the world. The regulation of triazolam is shown to be more permissive in the USA than in the UK. Six principal socio-political factors are put forward to explain this; differential regulatory trust; regulators' socio-technical data selections; medico-scientific disciplinary influences; organizational and professional interests; conflicts of interest of expert advisers; and the growth of the neo-liberal regulatory state. The risk assessments of both the British and American regulatory agencies are shown to be complacent relative to technical standards which the agencies themselves later accepted. It is suggested that, when the interests of pharmaceutical manufacturers and patients diverge, regulatory assessments are crucially affected by whether regulators are predisposed to award the benefit of the scientific doubts to the manufacturers or patients, and by the balance of such predispositions both within and between regulatory institutions of scientific expertise. The triazolam case indicates that the amount of trust placed in the pharmaceutical industry by the British American regulatory systems may hamper detection of flaws in manufacturers' medical data in a timely manner and, as a consequence, compromise patients' interests. Some policy implications for drug regulation are sketched.  相似文献   

Generalized Hamming Distance   总被引：4，自引：0，他引：4  

Abraham Bookstein  Vladimir A. Kulyukin  Timo Raita 《Information Retrieval》2002,5(4):353-375

Many problems in information retrieval and related fields depend on a reliable measure of the distance or similarity between objects that, most frequently, are represented as vectors. This paper considers vectors of bits. Such data structures implement entities as diverse as bitmaps that indicate the occurrences of terms and bitstrings indicating the presence of edges in images. For such applications, a popular distance measure is the Hamming distance. The value of the Hamming distance for information retrieval applications is limited by the fact that it counts only exact matches, whereas in information retrieval, corresponding bits that are close by can still be considered to be almost identical. We define a Generalized Hamming distance that extends the Hamming concept to give partial credit for near misses, and suggest a dynamic programming algorithm that permits it to be computed efficiently. We envision many uses for such a measure. In this paper we define and prove some basic properties of the Generalized Hamming distance, and illustrate its use in the area of object recognition. We evaluate our implementation in a series of experiments, using autonomous robots to test the measure's effectiveness in relating similar bitstrings.  相似文献