牛心朴子草化学成分研究

从牛心朴子草中分得五个物质,据理化常数、波谱分析与文献对照鉴定为①二十六烷酸②三十烷酸③表赤杨醇④β－各甾醇⑤牡丹酚。其中①从牛心朴子草提取分离得到是首次报导。     

业务外包风险分析与控制

结合现代企业理论中的交易费用理论和“委托-代理”理论,对业务外包风险进行了深入的剖析,详细分析了外包决策和执行两个阶段的风险,并提出了相应的风险控制策略。     

出口二元边际、行业异质性与劳动生产率

基于行业异质性视角,文章主要考察出口二元边际对劳动生产率的影响.利用UN Comtrade数据库,采用HK指数法测度中国出口深度边际和出口广度边际,发现中国出口产品种类基本覆盖了世界全部种类的90％.进一步地,借助聚类分析方法综合多种因素区分行业劳动技能异质性,出口二元边际与劳动生产率关系的实证结果显示:总体上出口深度边际显著推动劳动生产率提高,出口广度边际对劳动生产率产生抑制作用.更为重要的是,出口深度边际对劳动生产率的促进作用仅存在于高技能行业,受限于行业产品技术含量和劳动技能水平等,低技能和中等技能行业出口深度边际出现贫困化增长现象.出口种类扩张的生产率损失超过出口溢出效应的生产率收益,出口广度边际对高中低技能行业劳动生产率具有不同程度的负向影响.     

新型职业农民的生成逻辑与培育路径探讨

发展现代农业 、实施乡村振兴战略,迫切需要大量新型职业农民.新型职业农民的生成遵循一定的逻辑,农业具有吸引力是新型职业农民生成的逻辑前提,教育和培训是新型职业农民生成的关键,良好的制度环境是新型职业农民生成的重要保障.基于新型职业农民的生成逻辑,培训新型职业农民,需要提高农业的吸引力,丰富培育体系,完善保障机制.     

“鬼女红叶”传说的文本传承研究

日本长野地区至今仍广为流传着一个传说——“鬼女红叶”传说。该传说的文本记载肇始于日本中世,其后几经演变渐渐在长野地区以相对稳定的传承方式固定下来。通过文献研究法,解析该传说的文献记载与长野地区的勾连,沿着时间轴从文本层面对该传说的传承进行研究,理清文本传承的脉络及其情节演变过程,在此基础上考察文本传承所反映的在地化要素。     

A Design of Attributes Double Sampling Plans for Three-class Products

In this article, a new attributes double sampling plan for three-class products (ADSPTP) is presented, and the corresponding operating characteristic function is constructed based on the given procedure of performing ADSPTP. Average sample numbers (ASN) for complete inspection and curtailed inspection of the second sample are derived and the extreme point is discussed on the three-dimensional ASN surface. In addition, the differences arising from different parameters are studied. Sampling plans are designed by a nonlinear optimization model. Finally, numerical examples and discussions are given to illustrate the obtained results, and tables of the designed plans under various conditions are provided.     

A multiple warm standby δ-shock system with a repairman having multiple vacations

In this article, a warm standby n-unit system is studied. The system is operational as long as there is one unit normal. The unit online, which has a lifetime distribution governed by a phase-type distribution, is also attacked by a shock from some external causes. Assume that shocks arrive according to a Poisson process. Whenever an interarrival time of shock is less than a threshold, the unit online fails. The lifetimes of the units in warm standby is exponentially distributed. A repairman who can take multiple vacations repairs the failed units based on the “first-in-first-out” rule. The repair times and the vacation times of repairman are governed by different phase-type distributions. For this system, the Markov process governing the system is constructed. The system is studied in a transient and stationary regime; the availability, the reliability, the rates of occurrence of the different types of failures, and the working probability of the repairman are calculated. A numerical application is performed to illustrate the calculations.     

A Critical Review of Chinese Ethnic Law Studies in 2014

I. Basic Theory of Ethnic Law Studies
As a mature discipline,research on the basic theory of ethnic law studies is no longer the focus of research. Nonetheless,this does not deny that it is a rese...     

浅议新时期学生创造性思维的培养

新时期教育的着力点在于培养学生的创造力,而创造力的核心是创造性思维。但是,我国的传统教育却在某种程度上阻碍了学生创造性思维的发展。因此,我们必须引导学生敢于质疑、大胆提问,激发他们的好奇心和求知欲,注重发散性思维的培养,使他们学会学习、学会思考、学会创造。     

布哈林的社会主义建设理论探析

布哈林是继列宁之后,维护新经济政策的代表人物。在与反对派的论战中,在苏联社会主义建设的实践中,布哈林捍卫并发展了列宁的新经济政策思想,并逐渐形成了其独具特色的社会主义建设理论。布哈林的社会主义建设理论对于如何把经济落后的苏联建成社会主义强国作了许多有益的探索,丰富和发展了马克思主义的社会主义建设理论。