开设数学实验,促进教学改革

随着高等数学课程改革的不断深化和扩展,出现了一些新的研究领域,数学实验就是一个新兴的研究课题,一个值得研究的领域.……     

Study of-amyloid adsorption and aggregation on graphite by STM and AFM

Alzheimers disease is the major cause of dementia and the fourth leading cause of death in the developed world after heart disease, cancer and stroke. Pathologi-cally, one of major hallmarks of Alzheimers disease is the formation of insoluble deposits of -amyloid (A) both as diffuse and senile plaques in the brain tissue. The plaques are fibrous masses composed primarily of the 40-42 resi-due A peptides. The two most abundant forms of A are, respectively, the 40 and 42 residue peptide -amylo…     

A rare lobopod with well-preserved eyes from Chengjiang Lagerst(?)tte and its implications for origin of arthropods

The origin of arthropods has long been one ofthe most hotly-debated subjects. Arthropods used to bethought closely related with annelids, but the two groups arenow believed to be separated into two major realms withinProtostomia on the basis of new molecular data. Although itis generally held by paleontologists that arthropods should berooted in the early lobopods--a kind of worm-like creaturewith non-segmented legs, no intermediate forms have beenfound to bridge them. Here we report an organism with amixture of characters, including features characteristic ofarthropods (e.g., primary cephalization with paired eyes,paired antennae, and preliminary tagmosis) and of lobopods(e.g., worm-like body design, the dorsal spines, andnon-segmented Iimbs or lobe-like legs). The discovery of therare transitional form may throw new light on the origin ofarthropods and suggests that the most primitive arthropodsbegan with paired uniramous legs and the biramous onesevolved later.     

SPECIAL TOPICS:DMP brings about new design space for virtualization technology

Professors Wang and Luo and their group in the Department of Computer Science and Technology,Peking University (PKU),have re cently introduced a new memory virtualization technique called Dynamic Memory Paravirtualization (DMP).     

资源型县域经济可持续发展模式初探：以山西省交口县为例

以一个典型的资源型县域－山西省交口县为例，在剖析其经济发展存在的问题的基础上，对资源型县域经济的可持续发展模式作了初步探讨。     

德美高校后勤运行模式对我国高校后勤改革的启示

一、“学生服务中心“--德国模式 　　德国高校后勤全国一盘棋,即由大学生服务中心统一服务.德国大学生服务中心创建于第一次世界大战后,经过80年的发展,如今德国大学生服务中心已成为一个现代化的大学生服务机构,在全德共有62个分部,工作人员1万6千人.……     

高职、高专学校应形成自身办学特色

高专、高职学校如何办出一定特色,促进区域经济的发展、提高教学质量和毕业生质量是当前教育待解决的重要问题.本文从专业结构调整和课程全系设置及教师队伍建设等几方面,提出自己的观点和看法,试图阐述高专、高职学校办学特色的内涵,澄清如何办出特色在认识上的误区.     

A weak El Nio event in 2002 detected by the astronomical observation

El Ni駉 is a kind of the disastrous events occurring in the central and eastern parts of tropical Pacific. It pre-sents itself as anomaly of sea surface temperature (SST) in these parts of the tropical Pacific. It is called an El Ni駉 (La Ni馻) event whenever the tropical Pacific SST anom-aly is warmer (cooler) than 0.5℃(- 0.5℃) and lasts for over 6 months[1]. Southern oscillation (SO) is a seesaw- like variation of sea level pressure (SLP) in eastern and western parts of the souther…