对三峡旅游资源共享问题的探讨

资源共享使三峡旅游成为具有社团产权特征的物品，引发了重庆和宜昌两地旅游开发活动的非合作博弈，致使长期积淀形成的旅游品牌形象渐趋模糊、景区的整体性受到破坏，严重影响了景区的可持续发展。本文分析了三峡资源共享造成的负外部效应，并就产权安排的创新提出自己的看法。     

网络大学热的冷思考

自教育部启动现代远程教育试点以来，网络大学的数量在两年多的时间内，由4所飙升至40余所，面对不断升温的网络大学热，一方面要像对待一切新生事物那样，赋予足够的宽容与热情，另一方面要从教学条件、组织结构，成本与效益等方面进行冷静的理性思考。     

A new algorithm of brain volume contours segmentation

This paper explores brain CT slices segmentation technique and some related problems, including contours segmentation algorithms, edge detector, algorithm evaluation and experimental results. This article describes a method for contour-based segmentation of anatomical structures in 3D medical data sets. With this method, the user manually traces one or more 2D contours of an anatomical structure of interest on parallel planes arbitrarily cutting the data set. The experimental results showed the segmentation based on 3D brain volume and 2D CT slices. The main creative contributions in this paper are: (1) contours segmentation algorithm; (2) edge detector; (3) algorithm evaluation. Project (No.69931010) supported by the National Natural Science Foundation of China     

芝麻的营养价值与食疗

本文首先扼要介绍了我国历代古芨对芝麻的营养、食用价值和抗衰老作用的评价;接着又以现代医学、营养学观点分析了芝麻的主要营养成分及其防病、抗衰老的机理;最后又从中医药角度略述了芝麻的食疗作用并列举了部分常用食疗处方。可供食品开发和中老年食疗爱好者参考。     

A “cluster” based search scheme in peer-to-peer network

This paper presents a “cluster” based search scheme in peer-to-peer network. The idea is based on the fact that data distribution in an information society has structured feature. We designed an algorithm to cluster peers that have similar interests. When receiving a query request, a peer will preferentially forward it to another peer which belongs to the same cluster and shares more similar interests. By this way search efficiency will be remarkably improved and at the same time good resilience against peer failure (the ability to withstand peer failure) is reserved.     

Mean shift texture surface detection based on WT and COM feature image selection

INTRODUCTION Visual inspection plays a vital role in assuring the quality of industrial products. Texture surface detection aims at detecting defects such as cracks, stains, broken points, etc. on texture surfaces. Due to the repetitive changes of texture gray values and structures, traditional detection methods based on intensity or edge detection are invalid, which makes texture surface detection one of the most intriguing problems during the past decades. Generally, most of previous a…     

运用思维导图优化思想政治课教学

思维导图是一门新兴的脑科学。“思维导图（脑图）以一种与众不同和独特有效的方法驾驭整个方位的皮层技巧———词汇、图形、数字、逻辑、节奏、色彩和空间感。这样做的时候 ,它回归你常有大脑无限空间的自由。”（《思维导图———放射性思维》托尼·巴赞［英］ ,Ｐ８４）神经生理学鼻祖在研究了脑细胞之后 ,感触道 ,人脑乃是一台施了魔法的织布机 ,千百万之梭往复翻飞于斯 ,织就花纹转瞬即逝 ,图案寓意何其深远 ,几曾又有过驻留的时刻。小小图案似合若离 ,此消彼涨 ,宛如银河舞于九天。每个人的脑里 ,估计有１万亿个脑细胞。每个脑细胞都…     

体育兴奋剂及其检测

本文综述了体育兴奋剂的种类、作用及其对人体的危害,探讨了体育兴奋剂控制及检测的方式和方法。     

植物生长调节剂对拟南芥菜生长发育的影响

植物生长调节剂对植物的生长发育有重要影响。本实验以模式植物拟南芥菜为材料,调查了外加生长素类和细胞分裂素类生长调节剂对拟南芥菜子叶、下胚轴和根生长的影响,使人们对植物生长调节剂在植物发育调控中的作用,以及在器官发育中的功能和作用的分子机理有更进一步的认识。     

生态德育观与德育生态观之辨

生态学、教育学、伦理学的相互交融碰撞产生了新的德育工作观。早在20世纪就开始盛行的生态德育观与当前提出的德育生态观是两种不同的德育工作理念。本文主要对二者的形成背景、内在涵义和具体内容加以比较，阐明二者的概念之别。