德沃金的民主观

民主是现代国家普遍选择的政治制度，但民主的多数统治原则对少数人权利的侵犯而引发多数暴政的危险也可能对民主自身造成损害，从而妨碍政治平等的实现．德沃金的政治平等理论否定多数至上主义的合法性，提出真正实现平等关切的民主应是合宪性的民主和依赖式的民主，德沃金给多数至上民主的替代方案是合伙制民主．     

对三峡江南入蜀古道的有关认识

长江三峡南岸入蜀古道，是除三峡水道外又一入蜀的重要陆路通道。此道东起湖北宜昌市江南点军区姜诗溪口，西至利川市谋道苏拉口，全长500公里，东连着丰饶的荆楚大地，西可通往“天府之国”的川西平原，20世纪70年代修建的318国道路线大致上走的就是三峡南岸的西行人蜀古道。古道始筑于商周时期，沿用于秦汉以后一直到现在。历史上每到朝代更替之际，它都被用作军事通道，而太平盛世之时，它又成为社会经济发展中的交通生命线。在古道上遗留下来的一些遗址、墓葬、窖藏、桥梁、石碑、石板路等各类古文化遗迹向我们叙述着昔日商旅、驿差、军队、部族人群等在古道上往来奔波的繁忙图景。     

关于网络课程教学环境的设计与研究

信息技术的发展,知识以爆炸的方式增长,向传统教育提出了挑战,这也为远程教育和终身学习的实现提供了可能。网络环境下的学习具有个性化、协同性、资源丰富等特点,有利于培养学生的自主学习能力和创新精神。本文在分析我国现有网络教学平台的基础上,依据现代教学设计理论和学习理论提出了网络学习环境的组成模块,分析了各模块的特点;同时论述了网络学习人力资源支撑环境的组成。     

网络环境下图书馆参考咨询服务工作研究

网络环境下图书馆参考咨询服务发生了巨大的变化,本文通过分析图书馆参考咨询服务的特点,提出了网络时代图书馆参考咨询服务新的对策。     

浅析中国饭店集团的发展之路

21世纪是集团化竞争的时代,国际饭店集团大肆进军我国饭店业,在给我们带来机遇的同时也带来了巨大的挑战。在分析我国饭店集团现状的基础上,论述了中国饭店集团发展壮大的出路。     

论彝族火把节中的传统体育活动

火把节是彝族的盛大传统节日。在火把节期间除了开展宗教祭祀活动外,还开展民族传统体育活动。本文对彝族火把节期间开展的传统体育活动和功能加以分析,认为彝族火把节是连接彝族传统体育、传播彝族传统体育的重要形式,它深刻影响着彝族传统体育的发展。     

Vegetation Spatial Heterogeneity of Different Soil Regions in Inner Mongolia, China

The vegetation spatial heterogeneity and ecological characteristics in different soil regions were analyzed by surveying the vegetation in 12 different soil regions of Inner Mongolia, China, including conifer- ous-broadleaf deciduous forests, shrub, grassland, and desert regions with 1122 large 2 cm × 2 cm quad- rats (actual size 30 km × 30 km, referred to as L-quadrat hereafter) in about 1.18 million km2. Each L- quadrat was divided into four small 1 cm × 1 cm quadrats (actual size 15 km × 15 km, S-quadrat). The vegetation was analyzed based on the beta-binomial distribution to describe the frequency of occurrence and spatial heterogeneity for each kind of vegetation. The weighted average of the heterogeneity of all vegeta- tion in the same soil region provides a measure of the soil regional landscape level heterogeneity which de- scribes the spatial complexity of the regional landscape composition of the existing vegetation. Comparison of the vegetation characteristics in the 12 soil regions shows that, the calcic gray soil has the highest average vegetation type per quadrat. The largest soil region is calcic chestnut soil and has the most vegetation types. Every soil region has its own dominant vegetation sequence which dominates in occurrence and dominant vegetation types which dominates in spatial heterogeneity. For the Inner Mongolian vegetation, the weighted average of the heterogeneity is 0.60 and the vegetation diversity index is 4.47.     

苍山洱海地区农田蜘蛛种群结构及优势种动态分析

报道了云南省大理苍山洱海地区农田蜘蛛16科40属59种,其中优势种有7种:星豹蛛Padorsa astrigera、拟环纹豹蛛P.pseudoannulata、黑微蛛Erigone atra、浅斑近微蛛Eperigone fredeorum、额高蛛Gnathonariumsp.、叉斑齿螯蛛Enoplognatha caricis和棒络新妇Nephila clavata.研究结果表明:随着季节的变化,优势种的种群结构呈现上下波动趋势.     

A passive optical network based on optical code division multiplexing and time division multiple access technology

A passive optical network （PON） scheme based on optical code division multiplexing （OCDM） for the downstream traffics is proposed and analyzed in detail. In the PON, the downstream traffics are broadcasted by OCDM technology to guarantee the security, while the upstream traffics pass through the same optical fiber by the common time division multiple access （TDMA） technology to decrease the cost. This schemes are denoted as OCDM/TDMA-PON, which can be applied to an optical access network （OAN） with full services on demand, such as Internet protocol, video on demand, tele-presence and high quality audio. The proposed OCDM/TDMA-PON scheme combines advantages of PON, TDMA, and OCDM technology. Simulation results indicate that the designed scheme improves the OAN performance, and enhances flexibility and scalability of the system.     

基于安全域的输电系统概率安全评估系统框架

针对输电系统概率安全评估问题,提出了一种基于安全域的输电系统概率安全分析系统的模型.介绍了该模型的构成、实用动态安全域和割集电压稳定域在概率安全评估中的应用,以及概率安全评估的计算步骤.该系统应用最新的安全域的研究成果,在能量管理系统数据的基础上,通过对安全域、随机潮流的计算,实现了输电系统在线概率安全评估.给出的动态和静态不安全概率指标,可用于指导运行人员进行预防性控制决策.