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Search Results: 1 - 10 of 302670 matches for " 王昊? "
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小水电项目建设碳减排融资的案例分析
A Sample of the Carbon Finance in Mini-Hydropower Station
 [PDF]

, 振全
Journal of Low Carbon Economy (JLCE) , 2013, DOI: 10.12677/JLCE.2013.21005
Abstract:
本文通过案例的项目投资现金流的比较分析表明,碳减排融资是解决小型水电站投资收益率低的有效途径之一,解释了其对于融资方面的可行性,进而为我国发展小型水电站提供了可靠的理论依据。本文还估算了碳减排投资方的预期收益,结果表明其收益率远大于水电站本身的收益率。为此本文认为,我国应鼓励国内资本在碳减排方面的投资以及碳交易市场的尽快完善。
This paper shows that carbon reduction financing is one of the effective ways to solve the problem of mini-hydropower investment low income by the case of project cash flow analysis, explains its feasibility for financing, and thus provides a reliable theoretical basis for the development of mini-hydropower stations in China. This paper also estimates the expected return of investors in carbon emission reduction and the results shows that the yield including the carbon financing is much larger than itself. So it is believed thatChinashould encourage domestic capital investment in carbon reduction and perfect carbon trading market as soon as possible.
河南银洞沟银多金属矿床地球化学特征 与成矿机理初探

地质与勘探 , 2011,
Abstract: 银洞沟银多金属矿是一个典型的碰撞造山带型脉状矿床,产出于北秦岭褶皱带二郎坪地体早古生界二郎坪群(Pz1er)内,是在二郎坪地体内所取得的重大找矿突破,具大型乃至超大型规模。金属矿物以独立矿物(银金、辉银矿)、硫化物形式赋存,银、铅、锌共生关系密切。通过对矿床地质、铅同位素、碳氢氧同位素、稀土元素和流体包裹体地球化学特征等的研究,认为该矿床的成矿物质来源于小寨组地层并有松垛花岗岩浆活动的叠加,成矿热液主要来自变质水,混合了部分岩浆水、热卤水;成矿温度为中温,矿床具明显的碰撞造山改造作用、变质热液、岩浆热液强烈叠加的造山型变质热液型矿床。
林木种子园研究现状与发展趋势

世界林业研究 , 2013,
Abstract: 林木种子园是重要的良种生产基地。近年来,林木种子园发展迅速。文中概括了种子园建园和经营过程中保障产量和品质的技术措施,阐述了种子园增益的表现规律,提出了未来种子园发展趋势,以期为我国种子园经营实践提供参考,促进林木良种化进程。
各异性FVD模型及数值模拟
,
哈尔滨工业大学学报 , 2010, DOI: 10.11918/j.issn.0367-6234.2010.01.032
Abstract: 为了使跟驰模型能够描述驾驶人行为差异,基于不同气质类型驾驶人的行为差异分析,建立了跟驰模型参数与驾驶人气质状况之间的关系,通过引入气质激进度变量,将跟驰模型参数表达为气质激进度的函数,并在改进FVD模型的基础上,提出了体现驾驶人行为差异的各异性FVD模型.该模型克服了传统规范模型无法描述驾驶人个体行为差异的缺点.数值模拟实验结果表明该模型能够成功地模拟稠密交通流中小扰动传播演化结果的随机性现象.该模型结构简单,且参数易于确定,一方面为驾驶行为各异性的建模建立了理论基础,同时也为微观交通流动态随机特性模拟提供了一般性的方法.
煤矿井下火灾的自动探测与灭火技术方案的研究
Research on the Automatic Fire Detection and Fire Suppression Technique Scheme in the Coal Mine
 [PDF]

高彦,,, 冯懋, 少峰, 魏苗苗, 徐攀峰
Journal of Electrical Engineering (JEE) , 2014, DOI: 10.12677/JEE.2014.23006
Abstract:
介绍了以基于拉曼散射的分布式光纤温度传感器对煤矿井下火灾进行自动探测的设计,分析了分布式光纤应用于煤矿井下的可行性和优越性,并结合水喷雾技术,共同构成煤矿井下火灾的自动探测及灭火系统。在发生非电气类火灾时,可以用其进行灭火,在平时可以用其对井下进行洒水除尘处理,实现资源的最大化利用。
This paper introduced the distributed optical fiber temperature sensor based on Raman scattering for design of automatic fire detection in the underground coal mine. Feasibility and superiority of the distributed optical fiber applied in coal mine was analyzed. Combined with water spray technology, the distributed optical fiber constituted the automatic fire detection and fire extin-guishing system in the underground coal mine. In the event of non-electrical fire, it can be used to put out the fire, and be usually used for underground sprinkling service, which maximizes the use of resources.
腐朽虫蛀木构件的耐久性预测模型研究进展
Review of the Prediction Model for Durability of Structural Wood under Decay and Termite Attack
 [PDF]

小丽,, 雪亮
Hans Journal of Civil Engineering (HJCE) , 2015, DOI: 10.12677/HJCE.2015.45026
Abstract: 对木结构进行剩余寿命预测需要从材料层面考虑木材的腐朽、虫蛀、干缩裂缝和持续荷载对木材长期抗力的影响。木构件腐朽深度的增大和木材强度的降低是腐朽引起木材长期抗力降低的主要原因,构件中的虫洞数量和虫洞深度减小了构件的有效横截面积是虫蛀对木材长期抗力降低的主要影响。因此,本文从木材腐朽和虫蛀的角度,分析总结了木构件耐久性预测模型研究进展,包括地面木构件腐蚀随时间变化的模型,与土壤接触的地面木构件的腐朽模型,地下木桩的腐蚀模型和虫蛀的可靠度模型等。并在此基础上,指出腐朽机理的研究,考虑各种环境因素建立更加合理的腐朽规律和虫蛀规律是有待解决的关键问题。
The mechanical properties of the structural wood are affected by its surrounding such as shrinkage cracks, decay fungi, termite attack and duration of load effect. It is necessary to study how these factors affect the resistance of the wood member during service life in order to predict the residual life of timber structure. Decay fungi induce the depth of decay increasing as time and the termite attack makes the wood have more pinholes. Both of them will greatly reduce the effective area of the wood member and meanwhile decay fungi decrease the strength properties in wood. In this paper the research development and achievement of the prediction model for durability of structural wood under decay and termite attack are reviewed in detail including decay model of in-ground timber, exposed timber in ground contact, above-ground exposed timber, protected timber and a reliability model under termite attack, and then it is concluded that it is the key problem and main future research to study on the mechanics of timber decay and to develop the quantitative prediction model under decay and termite attack considering various environmental factors.
基于欧式距离的自适应交织算法
,杨鸿文
北京邮电大学学报 , 2010, DOI: 10.13190/jbupt.201004.110.wangh
Abstract: 针对正交频分复用系统,提出了一种新的自适应交织器算法.该方法基于信道状态信息(CSI),从一组交织器中选出一个较优者来传输当前编码块.所选交织器能使最小欧式距离最大,从而能获得更好的性能.与已有的自适应交织算法相比,所提方法复杂度低,系统开销小,并且性能相近.此外,所提算法基本不存在交织器失步的问题,可以大大降低对CSI反馈的要求.
基于云模型的水体富营养化程度评价方法
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环境科学学报 , 2013,
Abstract: 水体富营养化程度评价对生态环境保护具有重要意义.针对水体富营养化程度评价不可避免的模糊性和随机性的特点,本文引入云模型的方法,对我国14个代表性湖库的富营养化程度进行评价.根据确定的评价标准,生成各评价因子隶属于各级别的综合云模型,并针对湖库实测资料,得到各评价物的确定度,由最大确定度决定湖库营养化级别.将该法所得结果与湖库实际水质状况、国内外应用较为广泛且简便的营养状态指数、评分公式法及模糊综合评价法所得结果进行对比,发现评价结果真实可靠,计算过程简洁明了,验证了该方法的可行性和有效性.
基于drg的遥感影像几何校正
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遥感技术与研究 , 2005,
Abstract: 几何校正是遥感影像处理的重要环节,地面控制点(gcp)的采集是影响遥感影像几何校正精度和效率的重要因素。结合spot5影像处理过程,比较了实际作业中几种gcp采集模式的优缺点,总结探讨了在erdasimagine中利用drg进行地面控制点采集的几何校正方法。
CSSCI本体概念模型的构建和描述
,苏新宁
中国图书馆学报 , 2009,
Abstract: 现有的数据结构导致CSSCI信息服务产生了检索方式简单化和隐含知识获取难两大问题。通过对CSSCI数据结构和内容特点的分析,提出基于本体面向对象的知识组织方式来重构CSSCI学术资源知识结构的解决方案,并试图通过建立概念层次结构和设置概念属性来构建CSSCI本体概念模型,用于表达该领域的知识组织。可以使用Protégé工具以OWL编码方式和图形可视化方式对概念模型进行合理描述。图5。表1。参考文献7。
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