论网络文献的时空性、创造性、科技性与文化

文献属于文化的范畴.由于物质载体的不同,文献也表现不同的文化理念.网络文献的出现,是社会网络化发展的结果.它具有时空性、创造性与科技性的特征,由此所反映出来的文化也具备了这些特点,本文分析阐述了两者之间的必然联系.     

Fluctuations of grasshopper populations on aMiscanthus sinensis grassland

Summary Population densities of the three grasshopper species onMiscanthus sinensis grassland in the Kawatabi IBP Area, Japan,Parapleurus alliaceus, Mongolotettix japonicus andChorthippus latipennis, were estimated principally by the release-and-recapture method for five years from 1968 to 1972. The total number of individuals of all three grasshopper species was about 42 per 100m² in August. The number of individuals ofP. alliaceus adult, the dominant species on this grassland, showed a tendency to decline during the five years, though the amplitude was not so large. The number of eggs laid was, however, nearly constant and the mortality from the second nymphal instar to adult was relatively low and constant during the survey period. The weather conditions during the periods of egg and the first instar, such as snowfall and temperature decreasing, are suggested to be one of the factors causing variation in numbers. Contributions from JIBP-CT No. 145. A part of this study was supported by the special project, “Studies on the dynamic status of biosphere”, sponsored by the Ministry of Education.     

The effects of state-dependent human behavior on the design of a serial line

Most research on line design assumes that human operators perform independently from the status of the line. Recent empirical evidence is contradictory. Humans are likely to change their working speed if they might otherwise cause idle time (Schultz et al., Manage Sci 44(12):1595–1607, 1998). This peculiarity of worker behavior is observed in a variety of settings but little is still known about optimal line design that accounts for this more realistic modeling of worker behavior. Therefore, we analyze work allocation in a serial line with limited buffer capacity and adaptive human behavior. An extensive simulation study reveals that optimal work allocation in state-dependent models is different from classical state-independent models. A bowl-shaped work allocation might be suboptimal and design guidelines are more complicated. Depending on the extent of human reactions, a bowl-shaped, balanced, or reversed-bowl work allocation can be preferable.     

Prozessverbesserung mit Reifegradmodellen

Since the Software Engineering Institute has published the Capability Maturity Model in 1991, maturity models evolved into a commonly used instrument for assessing the state of a specific class of objects and for identifying improvement measures. As process improvement is a core task of business process management and takes top positions on CIO agendas, maturity models are prospering in this domain as well. However, it remains unclear which maturity levels should be aspired for distinct processes or process groups. Numerous companies strive for increasing or even maximizing maturity levels. Some maturity model specifications contain oppositional advice, but lack concrete recommendations. Even academia provides no answers. Against this background, we propose a mathematical optimization model that builds on insights from value-based management in order to analyze general economic relationships of process improvement with maturity models. The guiding effects of these relationships are illustrated using the example of ??CMMI for Services??. We conclude by discussing limitations and by pointing out theoretical as well as managerial implications.     

Zur Wirkung von Neukunden-Promotions auf Bestandskunden

Service providers frequently offer better deals to prospective customers than they offer to customers who prolong their contracts. The present paper examines the effectiveness of incentives on new customers and, perhaps even more significantly, assesses negative effects on existing customers. To test the hypothesized effects, a series of two experiments was conducted. Results indicate that promotions that are offered exclusively to prospective customers have a negative effect on existing customers, and that this negative effect is stronger for customers with a short relationship age and for those at the end of their contract life-cycle. The unfairness and inequity perceived by existing customers can be substantially reduced if these customers are offered the opportunity to receive a part of the promotion value, while the promotion??s effectiveness to attract new customers remains unaffected.     

南充市城区已婚育龄妇女二孩生育意愿研究

2018年4—5月在四川省南充市城区采用便利抽样,以已婚且未育或已育一个小孩的育龄妇女为研究对象,采用自制匿名问卷,以面对面的形式收集资料,了解实施全面二孩政策后南充市育龄妇女的生育意愿,为南充市的人口研究提供参考依据。在213名调查对象中,56人(26.3%)有二孩生育意愿,140人(65.7%)无二孩生育意愿,17人(8.0%)不确定是否生育二孩。南充市被调查者的理想子女个数均值为1.46,意愿子女个数均值为1.27。不同文化程度(χ2=7.512)、配偶月收入(χ2=12.641)、理想子女数(χ2=66.401)、一孩性别(χ2=5.441)的育龄妇女间二孩生育意愿差异有统计学意义(P<0.05)。Logistic回归分析显示,第一个孩子性别为女孩(OR=2.641,P=0.021)、丈夫月收入越高(OR=1.761,P=0.028)、理想子女数多于1个(OR=29.040,P<0.001)的育龄妇女更有意愿生育二孩。南充市城区二孩生育意愿处于较低水平,经济收入、理想子女数、一孩性别会影响育龄妇女的二孩生育意愿。全面二孩政策对于促进育龄妇女生育二孩的效应有限,应当建立相关的配套政策,以促进全面二孩政策的实施。     

我国公司债权人保护制度的缺陷及完善

切实、全面地保护债权人的利益是我国公司法的基本目的,公司法的诸多规定都体现出对债权人利益的保护.但现行公司立法以及司法实践中对公司债权人的保护还存在着某些缺陷,文章针对这些缺陷提出了一些完善措施.     

高师英语教学改革探讨

随着时代的要求 ,出版了新版的中学英语教材。高等师范学校是培养中学英语教师的摇篮 ,其英语教学也要随之进行相应的改革。文章着重探讨了高等师范学校进行的几个方面的教学改革以适应新版的中学英语教材的变化。这种改革必定会适应时代要求 ,培养出合格的英语老师