Extending Responsiveness to Intervention to Mathematics at First and Third Grades

Responsiveness to intervention (RTI) is an innovative approach to the identification of learning disabilities (LD). The central assumption is that RTI can differentiate between two explanations for low achievement: poor instruction versus disability. If the child responds poorly to validated instruction, then the assessment eliminates instructional quality as a viable explanation for poor academic growth and instead provides evidence of a disability. For children who do respond nicely, RTI serves a critical prevention function. Most of RTI research has been focused on early reading. In this article, we describe two ongoing programs of research on RTI in the area of mathematics: one on a comprehensive mathematics curriculum at first grade and the other focused on word problems at third grade. For each research program, we describe the sample, explain how students are identified as at risk for mathematics disability, provide an overview of the interventions to which responsiveness is gauged, and describe some results to date.     

利用“秩和比法”对第15届男篮世锦赛各队综合实力的评价

运用RSR秩和比数学原理,对参加第15届男子篮球世界锦标赛的24支队伍的综合实力进行了比较研究,并对各支队伍的RSR值的排名与其最终名次进行了对比,结果发现美国队和西班牙队的RSR值最高,最终西班牙队获得了冠军。由于赛制和其它客观的原因,各队的名次与实力稍有出入,但基本与其实力相符。     

扶风新出商周青铜器赏析

扶风县位于陕西关中西部，是西周文化的发祥地。自西汉神爵四年（前58年）在扶风（时称美阳县）发现青铜器以来，至今两千余年间，青铜器屡有重大发现。著名的青铜器和墙盘、折觥、     

从性别角色社会化透析我国体育人口性别结构现状

结合影响个体性别角色社会化的重要因素:家庭、学校、同辈群体和大众传媒.阐述人的生命周期的性别角色社会化中所经历的重要事件对当前各年龄段不同性别体育人口的影响,分析造成体育人口性别结构失衡的社会学因素.旨在提高我国女性体育人口比例,平衡体育人口性别结构.为发展我国妇女体育、制定体育人口发展对策提供参考.     

Phosphate loading and the effects on VO2max in trained cyclists

It is known that an increased level of red blood cell 2,3-diphosphoglycerate (DPG) shifts the oxyhemoglobin dissociation curve to the right, thus allowing a greater unloading of oxygen at the tissue level. It has been hypothesized that phosphate might help increase VO2max by increasing 2,3-DPG level. Eight trained cyclists underwent three cycle ergometer tests (control, placebo, and experimental) to determine whether phosphate ingestion had any positive effect on VO2max, time to exhaustion, serum 2,3-DPG, and serum phosphate levels. We found no change between the control, placebo, or experimental conditions in pretest serum phosphate levels, but we did find increases in 2,3-DPG levels in the phosphate condition (p less than .05), which suggests that even a small amount of phosphate could increase levels of 2,3-DPG. We also found significant differences in VO2max between the control (p less than .05) and placebo (p less than .02) conditions and also in time to exhaustion between the three conditions (p less than .05). We suggest that phosphate may have an ergogenic effect, but clearly more work needs to be undertaken to ascertain the amount of phosphate required and the magnitude of the effect.     

Engineering Education in Developing Countries: social relevance versus international comparability

The growing frustration of developing countries with their relatively slow rate of economic progress, their increasing dependence on imports of technology despite genuine efforts for endogenous developemt, and the flight of their skilled manpower for employment in developed countries have combined to focus attention of their educational planners on the ‘appropriateness’ of their engineering education programmes. Since technology is nation- and culture-specific, it is argued that all educational programmes in the field of engineering and technology should be specifically designed to meet the needs of the country concerned. Formulation of such programmes may, however, inhibit mobility of engineers across national boundaries, hamper transferof technology and decelerate global economic and technological development. The paper examines the observable differences in the characteristics of developing and developed countries, the technological framework and projections of economic growth of developing countries and the special features of the engineering educational system needed to respond to their needs. Implications of recent advances in information technology, biotechnology and manufacturing technology on engineering education planning are analysed. The compatibility of socially relevant engineering education with that of internationally comparable standards is examined in detail. It is shown that it is possible to develop programmes in developing countries which are intellectually challenging, meet international standards of achievement and at the same tiem equip students with competence in technology assessment, with awareness of pitfalls of technology transfer and with experience in use of technological solutions for current social and economic problems. It is argued that such programmes while essential for developing countries will be equally useful to developed countries and would accelerate international appreciation of problems of development. The reversal of brain-drain is proposed through the creation of challenging opportunities at home coupled with the utiltisation of intellectual and financial resources of emigré nationals abroad.     

Medical student, resident, and faculty use of a computerized literature searching system

The experiences of medical students, residents, and faculty with a computerized literature searching system were evaluated. Third-year medical students, internal medicine and family practice residents, and full-time and voluntary faculty at one medical school had the opportunity to use a full-text and bibliographic medical literature retrieval system free of charge for an eleven-month period. Subjects conducted nearly nine thousand literature searches over a period of 942 system hours. Questionnaire data showed that participants could learn to use and would use an electronic information system, felt capable of using the system, utilized the system for a variety of purposes and in a number of different ways, and viewed the system as a valuable tool in searching the medical literature. The results are discussed in the context of the educational needs of the four user-groups and medical education planning by institutions.     

基于神经网络的监控数据智能处理方法

针对船用系泊缆绳安全智能报警系统中的表格试验数据，提出了应用神经网络技术的智能数据处理方法。该方法克服了传统数据处理方法一般难以找到合适的逼近函数、处理过程复杂的弱点，避免了传统数据处理方法上的不便性和局限性，实现了表格数据非线性输入输出的映射。通过样本学习而建立的网络可以提高数据的取用效率，具有很大的灵活性和适用性。这是一种很有应用价值的数据处理方法。