沙棘园杂草发生规律及防治试验

沙棘人工种村我杂草种类多，发生量大，严重影响沙棘的生长发育，１９８８－１９９４年，通过杂草种类及为害调查，使用克芜踪、草甘磷进行化学除草试验示范推广，较人工除草节省费用４３％，同时结合机耕除草，以耕代抚等方法，为沙棘园杂草综合防治提供了有效 措施。     

同羊周岁羯羊骨骼生长发育的研究

首次对同羊周岁羯羊的骨骼研究表明，同羊骨重占活重１２．６３％，与同龄湖羊公羊相近，而高于滩羊；主轴骨占骨总重的比例大于湖羊和滩羊，四肢骨重占骨总重的比例却小于二者；四肢骨比湖羊、滩羊短而细；同时，同羊头骨轻而秀长，肋骨对数变幅大，说明同羊具有比湖间和滩羊更好的产肉性能和遗传潜力。     

关于开发治理“五荒”工作的探讨

1994年6月份以来,我省森工林区按照省委、省政府开发治理“五荒”(荒山、荒地、荒草、荒滩、荒水)的战略思想,结合林区实际情况,积极行动。由于开发治理“五荒”没有成功的经验可以照抄照搬,各地都在探索和实践。针对森工林区的特点,就如何才能做好开发治理“五荒”工作,特做如下探讨。     

Combining cognitive and statistical approaches to survey design

Sample surveys provide data for academic research, government policy-making, the media, and business. Statistical research aims to improve survey data by reducing extraneous sources of variability and thus increasing accuracy. Researchers have begun to use paradigms adapted from the cognitive sciences to study those sources of variability associated with the processes that the respondent undertakes in understanding questions, remembering, judging and estimating, and formulating answers. To generalize laboratory-based findings, researchers must begin to embed designed experiments that vary the questionnaire content into sample surveys of broad population. Issues associated with the design of and statistical inference from such embedded experiments are examined and illustrated with an example on the effects of context questions on responses in attitude surveys.