福建龙岩马坑铁矿浅部矿床详细技术经济评价     

孙昌庆 《湖南地质》2000,19(3):173-177

本文以马坑铁矿浅部矿床为例,论述了矿床技术经济评价的基本方法。作者的研究表明,马坑铁矿浅部矿床的开发建设,在地质上是可能的,技术和经济上也是可行,合理的。  相似文献   

葡萄花油田合理沉没度界限研究     

吴俊海  郑连坤  马英健  张艳波  孙亚丽 《吉林大学学报(地球科学版)》2000,30(4):359-362

为保证抽油泵正常工作 ,达到抽井机井供采协调、高产稳产、节能降耗的目的 ,从最大产量、最高经济效益、最小泵效三个方面讨论了葡萄花油田合理沉没度 ,得出该油田单井的合理流压为 2 .5～ 3 .3MPa ,合理沉没度为 30 0～ 35 0m。确定油井工作制度时应该考虑经济效益。合理的沉没度在保证抽油泵正常工作的同时 ,还可以获得最大产量和最高经济效益  相似文献   

振动测井和振动采油在科油的实施及效果评价     

崔德鹏  左万戬 《东北地震研究》2000,16(3):70-74

本文较详细的阐述了应用超低频可控震源在科尔沁油田进行振动测井和振动采油的试验过程,并通过对１９９５年度在该油田包１断块区进行的１３个周期的基础资料的统计,做出了符合实际的效果评价,试验表明在油田开采初期通过振动采油可取得显著增产效果和可观的经济效益。  相似文献   

作业调度软件LoadLeveler在气象模式中的应用     

张明  杨效  邹丽  唐艳娟  张燕 《气象科技》2021,49(1):63-68

西北区域气象中心高性能计算集群使用LoadLeveler调度管理作业,为实现资源利用率和吞吐量的最大化,本文探讨了作业调度管理的作用和方法.通过配置文件关键字定义队列、设置调度算法和调度器调节参数,将作业的处理需求与可用资源进行匹配,依据实际需求定义集群和各种资源的可用性规则,防止作业之间的相互干扰.结合LoadLev...  相似文献   

安徽省公众气象服务效益评估   总被引：7，自引：0，他引：7  

王新生  陆大春  汪腊宝  胡五九 《气象科技》2007,35(6):853-857

基于翔实的社会调查数据,分析了公众对气象服务效益的总体评价,利用"支付意愿"调查估算方法,对年付费额、年节省费额以及声讯电话拨打次数进行了分析。结果表明,在经济不发达的安徽省,公众每年愿意支付11.7亿元购买天气预报,气象预报服务每年创造的效益占全省GDP的0.51%左右。分析了接受调查公众的分布情况及对气象服务的满意度和需求,对公众气象服务效用进行了定量评估和分析。  相似文献   

Relationship of Stakeholders in Protected Areas and Tourism Ecological Compensation: A Case Study of Sanya Coral Reef National Nature Reserve in China     

CHEN Haiying  HE Linsi  LI Peng  ZENG Xiaohong  YOU Changjiang 《资源与生态学报(英文版)》2018,9(2):164-173

The first step to defining the rights, responsibilities and interests of stakeholders and constructing a compensation mechanism is to identify the stakeholders and clarify their mutual relationships. Nature reserves are complex ecosystems involving nature, the economy and society. There exists a conflict between the public welfare benefits of ecological conservation and the private gains to be realized from social and economic development. There also exist in a nature reserve complex relationships among stakeholders, involving the utilization of ecological resources, ecological conservation and ecological-economic interests. The introduction of tourism brings substantial changes to the existing stakeholder benefit structure in a nature reserve. The implementation of tourism ecological compensation (tourism payment for ecological service) is a process for redefining the distribution of rights, responsibilities and profits among stakeholders and it is also an essential way to balance the interests of the stakeholders. This paper uses a case study of Sanya Coral Reef National Nature Reserve in China to examine the characteristics of stakeholders and analyze their interests. According to the method for defining basic attributes proposed by Mitchel and other scholars, in cases of tourism ecological compensation, stakeholders can be classified as definitive stakeholders, expectant stakeholders and latent stakeholders. This paper applies these classifications and then analyzes the relationships between the rights and responsibilities of these stakeholders and how these change after the implementation of compensation. Additionally, based on the impact compensation has on different stakeholders, changes in the relationships can be analyzed and the structure of the stakeholders can be modelled. This case study of the Sanya Coral Reef National Nature Reserve illustrates the operationalization of a new mechanism for tourism ecological compensation. The paper illustrates a method for coordinating the relationships among the stakeholders involved with this national-level nature reserve.  相似文献   

Additional Samples: Where They Should Be Located   总被引：2，自引：0，他引：2  

Pilger  G. G.  Costa  J. F. C. L.  Koppe  J. C. 《Natural Resources Research》2001,10(3):197-207

Information for mine planning requires to be close spaced, if compared to the grid used for exploration and resource assessment. The additional samples collected during quasimining usually are located in the same pattern of the original diamond drillholes net but closer spaced. This procedure is not the best in mathematical sense for selecting a location. The impact of an additional information to reduce the uncertainty about the parameter been modeled is not the same everywhere within the deposit. Some locations are more sensitive in reducing the local and global uncertainty than others. This study introduces a methodology to select additional sample locations based on stochastic simulation. The procedure takes into account data variability and their spatial location. Multiple equally probable models representing a geological attribute are generated via geostatistical simulation. These models share basically the same histogram and the same variogram obtained from the original data set. At each block belonging to the model a value is obtained from the n simulations and their combination allows one to access local variability. Variability is measured using an uncertainty index proposed. This index was used to map zones of high variability. A value extracted from a given simulation is added to the original data set from a zone identified as erratic in the previous maps. The process of adding samples and simulation is repeated and the benefit of the additional sample is evaluated. The benefit in terms of uncertainty reduction is measure locally and globally. The procedure showed to be robust and theoretically sound, mapping zones where the additional information is most beneficial. A case study in a coal mine using coal seam thickness illustrates the method.  相似文献   

提高南四湖综合治理工程的投资效益     

张方钵 《海洋湖沼通报》1992,(1):34-36

南四湖治理的中心任务是降低洪水位,在尽快续建两项主要工程—扩大韩庄运河和扩大湖腰—的前提下,湖内清障是保证洪水畅泄、降低水位、缩短滞洪时间,减少洪灾损失的重要措施。本文着重对以往湖内清苇实施困难、效果不佳的原因进行了分析,为了提高今后治湖工程的综合经济效益,对开展清障工作提出了建议。  相似文献   

基于投入产出方法的气象服务综合经济效益评估     

吴亚玲  吴先华  郭际  陈云峰 《南京气象学院学报》2015,7(6):525-533

如何评估气象服务带来的综合经济效益,一直是人们关注的重点和难点.以投入产出表的分配系数、消耗系数和列昂捷夫逆矩阵为核心,提出了关联经济效益、间接经济效益和完全经济效益的概念和算法,并以深圳市2012年的气象服务为例对方法进行验证,得到了一系列富于启示意义的结论.如:1)由于产业经济系统内部的关联性,气象服务带来的关联经济效益、间接经济效益和完全经济效益值较大,应引起全社会的关注和重视;2)深圳市气象服务的投入与完全经济效益比值区间约为1:134.34~1:228.378,远大于以往研究1:30~1:51的结果;3)传统的气象服务对象如农林牧渔业、建筑业等带来服务经济效益偏低,未来应重视向研究与试验发展业,综合技术服务业,租赁和商务服务业,居民服务和其他服务业,信息传输、计算机服务和软件业等服务产业提供气象服务,提高气象服务给社会带来的综合经济效益.  相似文献   

飞机人工增雨作业的决策方法   总被引：4，自引：2，他引：2  

王以琳  薛晓萍  李曼华 《高原气象》2008,27(3):686-694

利用中尺度模式计算云中的宏观物理特征量,结合分析作物生育期内不同时段降水对产量的影响程度及其变化特征,计算了不同区域逐旬每毫米增雨对作物经济效益的影响。提出用冰面饱和、水汽垂直输送、水汽积分量等云的宏观指标和各主要农作物不同生育阶段增雨的潜在经济效益指标等共同确定播云作业区的决策方法。在山东省人工增雨业务技术系统实践中,完成作业时间、作业高度和作业区范围的决策过程。  相似文献