排序方式: 共有44条查询结果,搜索用时 15 毫秒
1.
Load dynamic matching of supply and demand side based on the utilization of urban sewage heat energy
Flowing dynamic characteristics and its temperature dynamic characteristics of a three-level sewage pipe network in Chongqing were analyzed. A mall's building whole year load was simulated. In the adverse condition of wastewater flow, the market construction peak discharge heat was compared with the sewage heat load, the balance between the most adverse flow and the building demand was found. Explored supply and demand matching method between urban sewage and city building load in flow adverse condition to take full advantage of the urban sewage cold and hot resources. the composite system was adeptcd to make up the most unfavorable flow time of sewage average heat load and the construction load difference; it also puts forward principle of load sharing and control strategy aimed at compound system. 相似文献
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中国油菜产业竞争优势与劣势分析 总被引:2,自引:0,他引:2
沈琼 《农产品加工.学刊》2008,(8)
在综述前人对中国油菜产业国际竞争力研究成果的基础上,结合入世以来国内外油菜产业的发展情况,具体分析了中国油菜产业的竞争优势与劣势。研究表明,中国油菜产业具有气候、品种,劳动力资源丰富,以及国内市场需求空间大的优势,然而在产品质量与流通加工能力上,其竞争劣势显著。 相似文献
3.
根据巢湖水域渔业生态环境的特点,建立了渔业环境优劣评价体系的递阶层次结构。结合生物监测、水质监测的结果,用三标度法构造了目标层、指标层、分指标层及方案层间的比较矩阵,再经过一定的数学变换,间接地建立了判断矩阵,最后采用通常的层次分析法进行层次单排序和总排序,结合环境实际情况,从而对巢湖水域渔业环境的优劣进行评价。 相似文献
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解析多媒体在教学中的利与弊 总被引:1,自引:0,他引:1
提出了多媒体技术的概念,指出了多媒体技术在教学中的运用可将抽象的概念、复杂的数学模型直观地展示在学生眼前,让学生能更迅速地理解和掌握知识要点,起到事半功倍的效果,并提出日常教学过程中使用多媒体辅助教学存在的弊端。 相似文献
5.
Ann Magee 《Asia Pacific viewpoint》2001,42(1):35-45
In New Zealand while women dominate leadership positions in constitutional, political and business areas, gender inequality remains entrenched. Despite significant gains in rights (employment, pay equity, property), as a group women earn less and perform more family care and unpaid work than men. In part these disparities result from the economic restructuring of the last 15 years which saw a loss in unskilled manufacturing jobs, less social support and greater rewards to business and public sector elites. Maori and Pacific Island women are the most disadvantaged groups. Labour/Alliance government initiatives to reduce poverty particularly among Maori and Pacific Island peoples by strengthening access to health and education services and supporting and replicating successful community initiatives are also likely to benefit other low income women. 相似文献
6.
多元智能理论的提出,动摇了传统的智力观念.依据多元智能理论的观点,在教育过程中,教师应该认识到每个学生有不同的优势智能和弱势智能,在课程设置和学生的评价过程中,充分考虑学生的个体差异,树立正确的教学观. 相似文献
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作者综述了发酵床养猪工艺的起源、特点,并与传统集约化养猪工艺进行了比较,为研究和使用发酵床养猪工艺提供一些参考。 相似文献
9.
作物长势监测的应用研究现状与展望 总被引:5,自引:0,他引:5
讨论了各种植物长势监测的方法、原理、监测指标、优缺点及其研究进展,指出目前几种监测方法的一些局限性。并提出将几种监测方法有机结合起来从而弥补各自的不足的建议,最后分析了植物长势监测技术研究的发展趋势。 相似文献
10.
国内木塑市场潜力巨大,木塑这种可充分利用低值资源的高附加值产品,能为人力、资金、原料等资源找到最佳表现位置。随着我国天然木材资源日益减少,巨大的需求终究会敲开国内木塑材料的市场大门。 相似文献