Measurement of teacher performance: A study in instrument development

The procedures used to produce a research-based teaching evaluation system, containing low-inference indicators of effective and ineffective teacher behavior, included instrument development, content validation, and field testing. An extensive reliability study produced estimates for three types of consistency: intercoder agreement (r = 0.85), stability across teaching situations r = 0.86, and discriminant reliability among teachers (r = 0.79). The norming component of the study conducted in 45 schools, generated over 1200 observations of current teacher practice at all grade levels and in various subject areas. The results indicated the substantially generic nature of these behaviors; only grade level and instructional method (interactive, lecture, and independent seatwork) produced meaningful differences among groups of teachers. In addition, the average teacher used most of the effective behaviors (70%), and a few of the ineffective behaviors (8%) during observation. These results support the instrument's value in teacher training, remediation, and evaluation.     

Computer-aided searching of bibliographic data bases: Online estimation of the value of information

The study presents and synthesizes the results of a series of five experiments on human information-seeking behavior in three different information-seeking environments. The first three experiments utilized a highly-controlled, simulated information-seeking task developed to study human search strategies in citation networks. Emphasis in the fourth and fifth experiments was placed on assessing the value of information for humans in realistic search environments. Subjects search on a topic of their own choice in a data base of fiction in Experiment Four and a data base of technical literature in Experiment Five. After summarizing the experimental results, a conceptual model of how humans value information is presented. The model is then used as a basis for a broad interpretation of the empirical results. Implications of both the empirical and modeling results are considered for the areas of information retrieval logic, system flexibility, retrieval methods, types of aiding, online estimation of information value, and computerizing versus computer-aiding.     

关于篮球运动员情绪调节问题的探讨

本文对如何调节和稳定篮球运动员的情绪以适应外界刺激、克服情绪干扰等问题进行了论述。     

对灾后精神家园重建的几点认识

灾后精神家园重建是灾后重建的重要任务之一。当前，尤其要注重大力弘扬我省精神家园的内核和精华，把重建精神家园融入灾后重建全过程，形成全省人民的自觉追求，以凝聚人心，加快发展。     

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介绍提高查新检索查全率和查准率的几种方法。