What children do in spite of what they know

New studies support the hypothesis that young children have basic cognitive capacities but utilize them inefficiently; older children aid these capacities with generally valid cognitive heuristics which produce poor performance on critical problems.     

What farmers don't know can't help them: The strengths and weaknesses of indigenous technical knowledge in Honduras

Traditional Central American peasant farmers know more about some aspects of the local agroecosystem than about others. In general farmers know more about plants, less about insects, and less still about plant pathology. Without discounting economic factors, ease of observability must explain part of this difference. Certain local beliefs may affect what farmers observe and know. For example, a belief in spontaneous generation may lead people to fail to observe insect reproduction. The implications of the gaps in farmer knowledge are discussed in terms of the sustainable agriculture movement.Jeffery W. Bentley (Ph.D. cultural anthropology, University of Arizona 1986) has done field work with the Tohono O'odham (formerly the Papago) of Arizona, and in northwest Portugal. After teaching anthropology at New Mexico State University, he joined the Plant Protection Department of the Escuela Agrícola Panamericana (El Zamorano, Honduras) in 1987. He has published several articles in anthropological journals, and has a book in press on small-scale Portuguese farming. He is currently studying the agroecological knowledge and the agricultural practices of Honduran peasant farmers.     

对高校教职工知情权问题的思考

知情权是一个法理概念,它是民主的基本要求,又是推进民主不断前进的动力,归根结底是人权的象征.教职工知情权的现状往往能反映出一所高校的办学理念、精神风貌和人心向背等方面的问题.改革开放以来,高校教职工的知情权有了快速的发展,教职工希望获得知情权的意识也有了极其明显的提高.但是,我们必须客观地承认,当前高校教职工的知情权方面仍然存在这一些问题,必须进行认真思考,并采取稳妥的方式加以解决.     

语言是什么

有人认为语言只是一种工具。其实,对于一个人而言,语言即他的生命;他的语言的发展,即他生命的发展;他的语言的丰富即其生命的丰富;他语言的活力即生命力。一所学校的水平,无论大中小学,都取决于“他们把怎样的语言、怎样给了学生”。学校语言成块出现的形式是课程,学校水平在很大程度上取决于其课程水平。     

How cells know the size of their organelles

Cells have developed ways to sense and control the size of their organelles. Size-sensing mechanisms range from direct measurements provided by dedicated reporters to indirect functional readouts, and they are used to modify organelle size under both normal and stress conditions. Organelle size can also be controlled in the absence of an identifiable size sensor. Studies on flagella have dissected principles of size sensing and control, and it will be exciting to see how these principles apply to other organelles.