长江经济带水足迹字典序优化配置研究

针对长江经济带日益突出的人水矛盾,基于水足迹理论,构建基于人口数量的流域水足迹字典序优化配置模型,并提出水资源承载力的平衡指数模型,综合辨识人口结构对长江经济带水足迹字典序优化配置的作用机制。研究表明：人口总量对水足迹字典序优化配置具有显著的正向影响,人类活动强度是影响区域水资源承载力的平衡指数的关键要素;基于人口数量的流域水足迹字典序优化配置方案具有显著的城乡二元结构特征,本质上反映了城乡基础设施及产业结构的空间差异状态。该配置方案还具有人口就业结构特征,本质上反映了产业用水效率的空间差异状态。     

浅谈高校专业课教学质量的优化

结合教学实践 ,从学生学习心理、教师的要求、专业课教学方法改革、课堂教学艺术、实验课教学、理论课备课、批改作业、因材施教等几个方面出发 ,并结合当前科学技术发展现状 ,就当前形式下如何提高专业课教学质量 ,进行了探讨。     

高等教育在“大城市带大农村”中的地位及作用研究

培养创新人才是高等教育的重大责任,也是实施“大城市带大农村”战略的重要支撑。在明确高等教育在“大城市带大农村”中优先发展地位的基础上,分析了高等教育在提高农民科技文化素质、培养新型农民、提供人才资源、保障可持续发展等方面的重要作用,并提出根据我国农村的实际情况,优化教育结构。     

环境污染社会第三方治理研究

环境污染风险具有流动性、不确定性、跨时空性、不可测量性及难以修复性特征,导致环境污染国家治理机制和环境污染市场治理机制存在制度性局限,亟须建构环境污染社会第三方治理机制。环保社会第三方具有公共性、公益性、专业性、中立性及组织性的特点,环境污染社会第三方治理能够实现利益诉求、利益发展、利益协调及利益保障的制度绩效。针对环境污染社会第三方治理面临的宏观权力结构性失衡、中观机制整体性失调、微观行为系统性失范等瓶颈,优化我国环境污染社会第三方治理的结构性均衡机制、整体性实施机制和系统性规范机制。     

试论师范院校电教演示设备的优化及应用

本文首先对传统课堂演示设备存在的问题进行分析,提出了把多媒体教学演示系统引进课堂,并进一步阐述其结构、功能及如何提高其利用率。     

湖南省高等教育结构优化对策研究——基于区域产业结构调整的视角

区域产业结构与劳动力就业结构具有相关性.因此培养人才的高等教育必须根据产业结构调整趋势进行自身结构上的优化.湖南省高等教育结构优化包括:合理配置综合性大学、多科性大学、单科性院校的类型结构优化,适度发展研究生教育、本科生教育和专科教育的层次结构优化,省会中心城市与其他各市州协调发展的区域结构优化,学科专业改造与发展同时并举的科类结构优化.完善非正规高等教育体系的形式结构优化,来源多元化的投资结构优化.     

试论产业集群经济背景下江西职业教育结构的优化

产业集群经济逐渐成为区域经济的主体。职业教育结构合理与否,直接影响着产业集群经济的建立与发展。本文探析了优化江西职业教育结构与服务江西产业集群经济发展的问题。     

An intuitive risk factors search algorithm: usage of the Bayesian network technique in personalized medicine

The article focuses on the application of the Bayesian networks (BN) technique to problems of personalized medicine. The simple (intuitive) algorithm of BN optimization with respect to the number of nodes using naive network topology is developed. This algorithm allows to increase the BN prediction quality and to identify the most important variables of the network. The parallel program implementing the algorithm has demonstrated good scalability with an increase in the computational cores number, and it can be applied to the large patients database containing thousands of variables. This program is applied for the prediction for the unfavorable outcome of coronary artery disease (CAD) for patients who survived the acute coronary syndrome (ACS). As a result, the quality of the predictions of the investigated networks was significantly improved and the most important risk factors were detected. The significance of the tumor necrosis factor-alpha gene polymorphism for the prediction of the unfavorable outcome of CAD for patients survived after ACS was revealed for the first time.     

Lowering Inventory Systems Costs by Using Regression-Derived Estimators of Demand Variability*

Scientific techniques for inventory management typically are applied to systems containing many items. Such techniques require an estimation of the demand variance (and mean) of each item from historical data. This research demonstrates a significant potential for improvement in system cost performance from using least-squares regression fits of a variance-to-mean functional relation instead of the standard statistical variance estimate. Even when there is a moderate degree of heterogeneity among items and when the form of the variance-to-mean relation is misspecified, substantial cost savings may be realized. The cost of statistical uncertainty may be reduced by half. The research also provides evidence that system cost is fairly insensitive to the number of items used to fit the regression. This paper provides the underlying reason why a regression-derived variance estimator yields lower cost: it is less variable than the usual individual item variance estimator.     

Efficient Heuristics for MRP Lot Sizing with Variable Production/Purchasing Costs*

Two heuristics based on branch and bound (B&B) are developed to solve closed-loop material requirements planning (MRP) lot-sizing problems that have general product structures and variable costs. A “look ahead method'’(LAM) heuristic allows for variable production/purchasing costs and uses a single-level B&B procedure to rapidly improve lower bound values; thus, LAM efficiently uses computer-storage capacity and allows solution of larger problems. The “total average modification'’(TAM) heuristic uses B&B, applied level by level, and modified setup and carrying costs to solve the variable production/purchasing costs MRP lot-sizing problem. LAM and TAM are tested on problems and compared to heuristics in the literature. TAM may be used to solve large MRP lot-sizing problems encountered in practice.