双重关系——社会工作中专业关系的伦理困境

伦理是社会工作中的重要议题。在实务领域中，当社会上作者与案主不单是两者之间的专业关系，而产生了朋友、雇主、师生、商业伙伴甚至性伙伴等关系的时候，他就陷入了双重关系的困境。文章从美国社会工作伦理守则历次修订对此的限制入手。完整介绍双重关系的定义与分类，并提出处理双重关系的办法与建议。     

明清实学思潮的理论创新与本体论特点

从明中晚期到鸦片战争前后的本体论学说主要表现为对宋明道学本体论的批评和对新的本体论形态的探求。犹如西方哲学史中本体论的现当代转化一样 ,思想家们在扬弃“道”、“理”、“心”等僵化的本体过程中 ,力图对相当于海德格尔的“此在”的“主体”进行界定。他们不把本体当作圆满的先验预设 ,认为道德学首先应该使自身成为知识学。这种本体论思想的出现标志着中国本体思想的近代转化     

二元Hamming码Ham(r,2)及其对偶码的性质研究

Hamming码Ham(r,q)作为一种完备的线形分组码,具有许多良好的性质,并且其译码方法非常简洁有效。在此基础上,对二元Hamming码Ham(r,2)及对偶码进行了进一步的研究,讨论了其对偶码所具有的几个性质。     

Food intake and energy expenditure in growing cats with and without a predisposition to overweight

Overweight and obesity are multifactorial diseases caused by an imbalance in energy metabolism. An underlying genetic predisposition is often a factor in these conditions. In the cat breeding family of the Institute of Animal Nutrition at the Vetsuisse Faculty, University of Zurich, a segregating overweight phenotype with a genetic contribution was observed. From this breeding family, 26 kittens were followed from birth up to 8 months of age. During this time, food intake was measured using an automatic feeding station, and energy expenditure was investigated using indirect calorimetry at the ages of 4 and 6 months. Dual‐energy X‐ray absorptiometry (DEXA) was performed and blood glucose, leptin and insulin were measured at the ages of 4, 6 and 8 months. The kittens were also weighed daily for the first 2 weeks of life, every second day until weaning and once per week until 8 months of age. The body condition score (BCS) was evaluated monthly between 2 and 8 months of age. The main finding of this study is that a predisposition to overweight is connected to a higher food intake early in life, with no significant alterations in energy expenditure. The leptin blood levels were related to body fat percentage, and insulin sensitivity did not seem to be affected.     

林业家庭承包与双层经营体制的探讨

通过对林业家庭承包与其他方式承包在立法概念、物权性质、条件设置、流转方式等诸方面的比较分析,阐明农村土地家庭承包赋予农民人均一份长期而有保障的完整永久的林地使用权,促进林业、农村经济发展和社会稳定;而其他方式承包是家庭承包的补充,虽承包经营,但承包期内村集体仍始终享有全部收益权和处置权。落实统分结合双层经营体制,家庭承包应占主导地位。并通过调研实例说明,农民专业合作组织克服了小农经济的弊端,是适应现代林业发展的一种统分结合双层经营体制。     

RESEARCH ON A KIND OF GREY LINEAR PROGRAMMING AND THEIR DUAL THEORIES

In this paper, a kind of grey linear programming with grey interval coefficients is discussed,the definitions of the first and second whitenized linear programmlngs and the grey dual linear programmings are presented, the relationships between the solutions of the above three kinds of programming and the solution of the primal programming are explored, and some new conclusions are obtained.     

A DUAL ALGORITHM OF PIECEWISE LINEAR PROGRAMMING WITH SUCCESSIVELY INCREASING SLOPES

A fast dual algorithm is presented for the piecewise linear programming with successively increasing slopes. The concept of the pointer is used to derive the optimality and the feasibility conditions based on the dual simplex principle, which avoids enlarging the scale of the problem due to introducing piecewise variables so that storage and calculating requirements are reduced. Finally,the example is given to demonstrate the effectiveness of the presented algorithm.     

基于图素拼装原型的轴类零件参数化设计

阐述了在轴类零件的设计中，以图素拼装原理为基础实现参数化设计的原理和方法；探讨了利用图素拼装原理，将轴类零件设计中重复出现的具有相同结构和功能的几何形体提取出来，作为基本图素的参数化绘图系统，使用该系统，可以大大提高设计速度及图形处理效率。