EFFECTS OF AGE,SEX, AND STATUS ON PERCEPTION OF THE UTILITY OF EDUCATIONAL PARTICIPATION

This study investigated the influence of age, sex, and socioeconomic status on the perception of participants in adult education that their participation is useful. Two forms of utility were postulated: instrumental and expressive. An instrument containing scales of perceived utility, needs, goals, time orientation, and enjoyment was administered to selected classes at various educational institutions in the Chicago metropolitan area and, for comparison, a class in Florida. The results permitted inferences that needs, goals, and time orientation partially determine perception that participation is instrumentally useful and that age, status, and femaleness tend to favor perception of expressive utility. The findings supported previous research indicating that adult educational participation is complex behavior involving more than subject matter interests and motivational orientations and opened a new line of attack on the problem.     

催化剂MnO_2用量对KClO_3与MnO_2催化反应的影响

本文发现对Coats Redfern积分式进行适当修改后,可用于MnO_2与KClO_3催化反应的动力学研究,并找出了MnO_2与KClO_3催化反应中MnO_2的最佳用量。     

脂肪酮燃烧热和生成热与分子结构关系的探讨

本文用图论方法探讨了气态脂肪酮的燃烧热和生成热与分子结构的关系,提出了一个结构基础明确的定量关系。计算结果表明,脂肪酮燃烧热和生成热计算值与实验值的一致性令人满意。应用本文定量关系,不仅能够预测脂肪酮的燃烧和生成热,而且能够合理表征物质结构与性能之间的关系。     

THE IMPLICATIONS OF NATIONAL POLICIES IN THE UNITED STATES,BRAZIL, EL SALVADOR,AND PERU ON EARLY CHILDHOOD TEACHER EDUCATION

It may seem obvious but the world is filled with believers in the value of good care and attention to children during the earliest months and years. That belief is embedded in virtually all cultural traditions. Indeed, both common wisdom and hard scientific research evidence lead to the forceful conclusion that the earliest years of life are critical in the development of the intelligence, personality, and the social values and behaviors that will characterize later life... But if the value of the early years is so evident... why is there such neglect by families and social institutions? Among the reasons that might be offered are the following: Families living in extreme poverty or victimized by war and famine, may be so busy surviving that they cannot give the

loving attention to their children they would like to give. Families living in luxury may be too busy making money, or spending it, to give the needed time to their children. At the same time, some institutions that could help families to help their children take the position that the child development is best left to families. ‐‐Robert G. Myers, 1991