事故二叉树计算机算法

根据《数据结构》中的二叉树算法,结合事故树算法的特点,提出事故二叉树算法。该算法是对事故树求解算法的有益补充和发展,具有广阔的应用前景和现实意义     

全面提高成人高校学报质量的思考

针对全国报刊治理整顿后多数学报由内部发行转为正式学报类期刊的新情况,本文从学报业务工作的几个方面对全面提高成人高校学报(以下简称“成高学报”)办刊质量进行了较详细的论述,旨在对成高学报的办刊工作起到一些促进作用。     

三峡二期工程与湖北的机遇和挑战

１９９７年１１月１８日,三峡工程大江截流成功,标志着第一期工程结束、进入第二期工程实施阶段。长江三峡水利枢纽具有防洪、发电、航运和供水等巨大综合效益,是跨世纪特大型水利工程。它的建设,不仅对我国能源秘至整个经济布局产生极大的影响,而且对湖北长江经济带的形成与发展具有决定性的意义。     

我国可持续发展十大目标：关于“十五”计划制定的建议

“十五”计划是我国２１ 世纪的重大发展计划,直接关系着国民经济的发展方向,而实施可持续发展战略是我国“十五”计划和２０１５ 年远景规划的重要内容之一。为改善人民生活质量,改变“高资本投入、高资源消耗、高污染排放”发展模式,建立适合中国国情的“资源节约型”和“环境友好型”国民经济体系,充分利用“两种资源”和“两个市场”,本文提出了我国可持续发展的十大目标     

乡镇工业企业发展与环境,资源协调问题初探

我国乡镇工业企业的发展与环境、资源的协调问题已经成为我国发展与环境、资源关系方面的大问题。实行工农相对分离,组建乡村工业区,是提高乡镇工业企业素质、效益,强化乡镇工业企业优化组合、规模经营的有效途径;是保护环境,实现资源有效利用的基础工作之一;是提高农业劳动生产率,实现农业规模经营的基础工作之一。     

"三个代表"重要思想在党的自身建设中的作用

在"三个代表"重要思想的指导和引领下如何加强党的建设的基本途径,即必须加强党的基层组织建设,夯实党的根基;必须加强干部队伍建设,保证干部队伍素质;必须加强党员队伍建设,使党员成为带领群众前进的先锋模范.     

Desertification Control and Management of Land Degradation in the Thar Desert of India

India has 2.34 million km² of hot desert called Thar located in the north-western part of Rajasthan between latitudes 23°3 and 30°12 North and longitudes 63°30 and 70°18 East. The Indian desert is spreading annually over 12000 ha of productive land degrading it and slowly advancing towards the national capital New Delhi at the rate of 0.5 km per year. The Indian desert is characterised by huge shifting sand dunes; high wind speed; scarce rainfall; and intense solar radiation. Tremendous efforts have been made since the 1960s to arrest desertification and for ecological restoration of the Thar desert. An Ambitious afforestation programme including stabilisation of shifting sand dunes and creation of micro-climates through tree-screens and shelter-belt plantation was launched by the forest department of Rajasthan. A huge canal, 649 km long was also introduced to the Thar desert for ecological restoration.     

STATUS QUO & DRIVING MECHANISM OF DESERTIFICATION IN THE NORTH TIBETAN PLATEAU

ＴｈｅＮｏｒｔｈＴｉｂｅｔａｎＰｌａｔｅａｕ ,ｏｒｔｈｅＱｉａｎｇｔａｎｇＰｌａｔｅａｕ ,ａｓｔｈｅｍａｉｎｂｏｄｙｏｆｔｈｅＱｉｎｇ ｈａｉ ＴｉｂｅｔａｎＰｌａｔｅａｕｗｈｉｃｈｉｓｏｎｅｏｆｔｈｅｔｈｒｅｅｍａｊｏｒｄｉｓｔｒｉｂｕｔｉｏｎａｒｅａｓｏｆｄｅｓｅｒｔｉｆｉｃａｔｉｏｎｉｎＣｈｉ ｎａ ,ｈａｓａｗｅｌｌ ｐｒｅｓｅｒｖｅｄｎａｔｕｒａｌｅｃｏｓｙｓｔｅｍｃｈａｒａｃｔｅｒｉｚｅｄｂｙｈｉｇｈ ａｌｔｉｔｕｄｅｇｒａｓｓｌａｎｄ ,ｉｓａｎｉｍ ｐｏｒｔａｎｔａｒｅａｆｏｒｓｔｕｄｙｉ…     

Forced migration, processes of return and livelihood construction among pastoralists in northern Sudan

The Hawaweer, a nomadic, pastoralist group in northern Sudan, were seriously affected by the drought in the Sahel during the mid-1980s. Their experience illustrates the connection between internally displaced people, normal mobility, forced migration, dilemmas and opportunities of return and how new livelihoods can be successfully constructed based on traditional rights, strong local institutions and external resources. Some displaced Hawaweer got the chance to return to their homeland as new livelihood opportunities were established; others did not get this opportunity nor would they have returned if they had been given the chance. In both situations, the processes of displacement and return had an impact on the sense of belonging and identity.     

岷江上游地区的草地资源与畜牧业发展

岷江上游草地面积837226hm^2,大约占了该区土地面积的35％。这块草地蕴藏着丰富的生物多样性,具有重要的生态学功能,是岷江上游绿色生态屏障的重要组成部分。高山草甸草地和亚高山草甸草地是该区的主要植被类型,其面积分别占草地总面积的54．8％和17．2％,其产草量分别占该区各类草地总产草量的53．47％和26．46％。岷江上游各县天然草地的面积和各县草地畜牧业在经济结构中所占的比重都表现了从高海拔到低海拔递变的趋势,基本上与植被的垂直梯度变化相耦合。指出了当前草地畜牧业发展存在的一些问题：超载过牧现象严重,生产效率低下,集约化水平低。除了饲草的生产与加工、畜种改良和草种改良等措施外,结合岷江上游的实际情况,在发展的思路和技术措施上着重阐述了以下几个方面：发展特色畜牧业,摒弃头数畜牧业;以市场为导向的主动畜群时空周转;结合“天保工程”和“退耕还林工程”,促进农林牧业的紧密结合。