西安市林业高效复合经营模式与效益调查

通过对西安市近年来主要实施的林—油、林—菜、林—苗、林—禽、林—菌、林—药等林业高效复合经营模式及其效益进行深入调研和分析,确定了不同类型的林地宜采用的具体复合经营模式和不宜种植的作物种类,为今后实施林下复合经营提供了科学依据。     

银行业为何是大赢家?——一个基于竞赛理论的分析

文章以竞赛理论为视角,分析当前我国银行业整体业绩表现突出的原因。得出如下结论:银行业垄断、存贷高利差、信息优势以及货币产品经营者等"先天优势"促成了我国银行业大赢家的局面。这一局面会激励各行业之间展开银行牌照竞赛,产生租金耗散,影响实体经济。文章对此进行分析,并得出结论与政策建议。     

市场经济条件下政府管理高等教育的职能问题初探

当前，市场经济已经在我国占据了主导地位，政府管理高等教育的职能也应该发生相应的变化．以适应市场经济的要求：但是由于受计划经济影响，政府还或多或少地直接干预高等学校的内部事务，“越权”行为时常发生，压抑了各高等院校办学的积极性和主动性，给各高等院校的发展带来了不利的影响。因此，政府管理高校必须尊重市场经济的发展规律，摆脱计划经济的管理模式，使高校充分享有办学的自主权。     

Robust scheduling for multi-objective flexible job-shop problems with random machine breakdowns

This study addresses robust scheduling for a flexible job-shop scheduling problem with random machine breakdowns. Two objectives – makespan and robustness – are simultaneously considered. Robustness is indicated by the expected value of the relative difference between the deterministic and actual makespan. Utilizing the available information about machine breakdowns, two surrogate measures for robustness are developed. Specifically, the first suggested surrogate measure considers the probability of machine breakdowns, while the second surrogate measure considers the location of float times and machine breakdowns. To address this problem, a multi-objective evolutionary algorithm is presented in this paper. The experimental results indicate that, compared with several other existing surrogate measures, the first suggested surrogate measure performs better for small cases, while the second surrogate measure performs better for both small and relatively large cases.     

Correcting microstructure comovement biases for integrated covariance

Finding a precise variance–covariance matrix is the building block of empirical finance. While microstructure-noise-robust methods for realized volatility are in the mainstream of financial econometrics, little if any attention has been devoted to estimating a noise-free realized covariance for overlooking the well-documented manifestation of commonality in market microstructure factors such as order flows, liquidity or herding. By documenting and recognizing this fact, we propose a microstructure-noise-free nonparametric covariance estimator to uncover the virtual integrated covariance. The estimator is easy to implement and performs admirably.     

内蒙古地理标志资源的现状及其可地理标志性分析

内蒙古地大物博、生态环境良好,地理标志资源存量丰富,目前其利用状况和相关法律保护现状还存在一些有待改进的方面。但并非所有的资源都可以作为地理标志资源,因此,便涉及到资源的可地理标志性问题。可标志性的标准或者可以说唯一的标准是要看公众是否认为使用该标记的商品只来源于标记所指的地区。     

高校教师亚健康状态及主观因素分析

目前,健康已成为公众普遍关注的热点和焦点,健康的重要性正被越来越多的人所认识。高校教师是社会人才培养者,是国家最宝贵的人力资本,他们的健康问题已成为制约教师自身和高校协调发展的重要因素之一。引发亚健康状态的原因是复杂的,但教师自身的心理调节能力、行为生活方式、人际关系、缺乏体育锻炼等因素是造成亚健康状态的重要因素。正确认识亚健康状态以及形成的因素,方可进行有效预防和治疗。     

浅谈施工现场临时用电安全防护措施

分析了在油气田建设工程施工阶段,临时用电存在的设备陈旧、安全管理不到位、保护接地线不按要求连接等安全隐患,提出了安全用电的具体防护措施。