School district merger,busing, and the courts: Implications for school administrators

Many city school systems are faced with a situation of declining tax base, declining enrollments, and disproportionate minority ratios. Merger of city with surrounding school systems is one alternative to improve this situation. When city and surrounding systems contain disproportionate minority ratios the question may arise whether busing to achieve racial balance will likely be required by the courts. Review of desegregation litigation indicates that in the absence of intention to discriminate, the courts are not likely to require busing as a desegregation strategy. Further, school systems having achieved unitary status under court-approved desegregation plans may be allowed to adopt neighborhood school policies despite indications such policies would lead to partial resegregation.     

论学生工作中的大事与小事

学生工作是一项系统而又琐碎的工作，它关涉到学生生活的方方面面，大事小事都得双管齐下．做好学生工作也是一门艺术，而这门艺术的关键就在于科学地处理大事小事的关系，用辨证科学的态度去做好学生工作中的每件事．     

States of matter

All of us have read about solid, liquid and gaseous states of matter in school. Are these the only states of matter? What distinguishes different states of matter from each other?     

States of matter

All of us have read about solid, liquid and gaseous states of matter in school. Are these the only states of matter? What distinguishes different states of matter from each other?     

运输问题的灵敏度分析

本文对平衡运输问题在取得最优解的情况下,进行了灵敏度分析,并给出在特定条件下的最优调整方案.     

Dark matter

In Part I of this article we learnt that there are compelling evidences from dynamics of spiral galaxies, like our own, that there must be non-luminous matter in them. In this second part we will see that even clusters of galaxies must harbour dark matter. As if this was not enough, it turns out that if our knowledge of the universe is not completely wrong, then the universe as a whole has to contain dark matter and that it must be of some exotic type.     

Dark matter

In Part I¹ of this article we learnt that there are compelling evidences from dynamics of spiral galaxies, like our own, that there must be non-luminous matter in them. In this second part we will see that even clusters of galaxies must harbour dark matter. As if this was not enough, it turns out that if our knowledge of the universe is not completely wrong, then the universe as a whole has to contain dark matter and that it must be of some exotic type.     

Dark matter

The study of gas clouds orbiting in the outer regions of spiral galaxies has revealed that their gravitational attraction is much larger than the stars alone can provide. Over the last twenty years, astronomers have been forced to postulate the presence of large quantities of ‘dark matter’ to explain their observations. They are still in the ‘dark’ as to its true nature.