孔隙度、渗透率与净覆压的规律研究和应用

研究油层条件下孔隙度、渗透率与其净覆盖压力之间的变化规律,更好地指导油田的开发与调整。利用新引进的80年代末期发展的研究高压孔、渗的新仪器CMS-300岩心自动分析仪,对中原油田的天然岩心测试资料进行统计分析与研究。结果表明:油层孔隙度、渗透率与净覆压的关系以一元二次方程最为密切;孔隙度与净覆压间按指数规律拟合时,代表的物理意义更为明确,既能满足精度的要求,又能自动得出岩石的压缩系数。并提出了岩石的压缩系数与岩石的平均水力半径间呈幂律关系;净覆压下油层的渗透率与地面渗透率之比,仅与净覆压的大小有关,与地面渗透率的大小无关等新观点。     

福建农民合作社参与农业科技推广的评价分析

立足福建农民合作社参与农业科技推广的实践,通过构建客观合理的评价指标体系,采用AHP-模糊综合评价法对农民合作社参与农业科技推广的实效进行评价,并分析影响农民合作社开展推广的主要因素,在体系建设、人员科技文化水平及政策环境等方面提出了相应的思考对策。     

To grasp the family planning program early, carefully and surely according to the law of reproduction]

China's February 1982 Directive on Improving Family Planning Work stipulated that family planning should be incorporated into national economic and social planning by understanding it early, carefully, and surely according to the law of reproduction. Understanding family planning early means to implement the policy of birth control as a primary goal, to plan early for births, and to carry out birth control measures, i.e., formulating a plan is the basis of understanding early. For example, the following must be considered when mapping out a plan for 1983: the number of fertile women who wanted children but who remained childless for 3 years of marriage; those who conceived late in 1982 and will deliver in 1983; the number of newlyweds over 23 years of age who have not planned a pregnancy; those with 1 child over 4 years who due to unusual circumstances will have a 2nd child; the number of people planning marriages before March 1983. The next step is to make arrangements, which include submitting individual requests, getting permission from communes and approval from the general public, and delivering contraceptives to the homes of newlyweds and mothers. 9 months after arrangements are completed, adjustments must be made, e.g., those who were unsuccessful in their plan to conceive this year will try the next year. To understand carefully is to understand the concept, circumstances, and data of family planning and thus be able to administer it scientifically. This means primarily controlling fertile women who are newlyweds, mothers of 1 child, and mothers of multiple children. To understand surely is to conform to the organization, concept, policy, planning, and measures of family planning. This means training basic level birth control cadres in population theory and methods of family planning. In addition, it means persuading the masses to be enthusiastic, diligent, fearless, understanding, and to show initiative toward family planning.     

Identifying Treatment Effects Under Data Combination

We consider the identification of counterfactual distributions and treatment effects when the outcome variables and conditioning covariates are observed in separate data sets. Under the standard selection on observables assumption, the counterfactual distributions and treatment effect parameters are no longer point identified. However, applying the classical monotone rearrangement inequality, we derive sharp bounds on the counterfactual distributions and policy parameters of interest.     

绿地系统总体规划引入游憩型绿地子系统规划的思考——以佛山市为例

一、引言 目前,城市绿地系统规划大多是对环境客体的研究,如主要以绿地率、绿化覆盖率、人均绿地面积为参数指标来评价整个城市的绿地面积,较少关注使用者和客体之间的关系。随着城市社会的发展,传统的绿地系统需要进一步完善,以满足人们生活质量逐步提高的要求。本文以市民对于绿地的游憩需求为依据,在传统的绿地系统规划中引入游憩型绿地子系统的整体规划。     

中国生产性服务业与制造业种群的共生——基于Logistic生长方程的实证研究

本文从生态学种群Logistic生长方程的视角,假设共生作用和环境作用对种群环境容量存在非线性影响,建立生产性服务业与制造业种群共生模型,探索中国生产性服务业与制造业种群共生的特征与规律。研究发现:中国生产性服务业发展的关键在于增加制度供给,而制造业发展的关键在于突破资源、能源、环保和产品市场的硬约束。     

学术自由与大学发展

学术不彰问题在近年的大学发展中日益凸现并引发人们的高度关注。作为学术机构与不同专业之松散联盟,大学需要以学术自由作为其教学和科研活动的基本准则,为学者探究真理和传授知识提供必要保障。虽然大学自主性由于市场经济的冲击和国家权力意志的介入而受到了较大的影响,但就大学功能的正常发挥和社会的长远发展而言,保障学术的相对自由,构建一种使大学灵活应对社会发展需要的自由办学机制尤为重要。     

高校计算机教育中引入Linux操作系统的实践与分析

Linux系统的出现给我国软件产业的发展带来了良好的契机,而进行Linux的推广,高校担任着重要的角色,根据Linux操作系统在绍兴文理学院<大学计算机基础>课程改革中的具体实践进行分析,提出了一些改进的看法.     

多媒体CAI与《食品工程原理》课程教学

简单介绍多媒体CAI知识,提出多媒体CAI应用于《食品工程原理》课程教学的优点及必要性,同时分析应用中存在的误区,指出把传统教学和多媒体CAI有机地统一是《食品工程原理》课程教学改革的方向     

炫耀性购买行为的社会心理动因与管理启示——基于中国文化背景的多角度解析

随着中国经济的快速发展和人们生活水平的不断提升,炫耀性消费已成为转型时期具有代表性的消费现象之一。从营销管理的视角,炫耀性购买行为本质上是消费者个体在社会比较基础上表达差异性自我的一种符号象征和非理性消费行为。在中国文化背景下,可从符号象征性与个性化需求、面子文化与关系自我、社会分层与身份认同等多角度诠释其深层次的社会心理动因,并应从政府、企业和消费者自身等多方面共同探讨其实践管理策略。