使用种次号加辅助区分号对“同类书”的集中方法

由于在文献分类编目工作中会遇到各种内容相同,而在装帧形式、版本形式等方面不同的“同类书”,而将这些“同类书”在目录组织进而在分类排架中组织在一起十分困难,为了方便读者对比和选择使用,阐述了采用种次号加辅助区分号将这些“同类书”集中的具体方法,结果表明,此种方法不仅目录组织清晰,还有助于读者对图书的检索和利用。     

大学计算机基础课程教学改革与资源建设探析——以成都理工大学为例

成都理工大学计算机基础课程教学经历了一个从分散到统一的改革过程,并取得了明显的成效,但也存在一些问题.针对这些问题,只有进一步明确课程定位、精讲课程内容、创新实验教学和考核方法,同时加快立体化教材建设,有效开拓和使用网络教学资源,才能更有效推动该门课程教学水平的提高.     

Inference on a progressive type I interval-censored truncated normal distribution

In this paper, we consider the problem of making statistical inference for a truncated normal distribution under progressive type I interval censoring. We obtain maximum likelihood estimators of unknown parameters using the expectation-maximization algorithm and in sequel, we also compute corresponding midpoint estimates of parameters. Estimation based on the probability plot method is also considered. Asymptotic confidence intervals of unknown parameters are constructed based on the observed Fisher information matrix. We obtain Bayes estimators of parameters with respect to informative and non-informative prior distributions under squared error and linex loss functions. We compute these estimates using the importance sampling procedure. The highest posterior density intervals of unknown parameters are constructed as well. We present a Monte Carlo simulation study to compare the performance of proposed point and interval estimators. Analysis of a real data set is also performed for illustration purposes. Finally, inspection times and optimal censoring plans based on the expected Fisher information matrix are discussed.     

计算机无线网络安全技术探析

近年来随着无线网络的快速发展,无线网络替代传统有线网络的趋势日益明显。与此同时,无线网络的安全机制也需要得到同步完善,从而进一步实现人们安全通信的要求。论述了计算机无线网络安全所面临的主要问题,提出了解决这些无线网络安全问题的措施。     

Information society and digital divide in South Africa: results of longitudinal surveys

Integration into the information society implies that information plays an increasingly important role in all sectors of society and holds distinct social and economic benefits. Discourses on the information society are, however, also associated with the digital divide and inequalities in access to and use of information and communication technologies (ICTs). Within sub-Saharan Africa, South Africa is often regarded as one of the most information-integrated societies due to widespread mobile phone ownership, among other things. However, while ICT access has been emphasized, research also points to the role of demographic, socio-economic and cultural factors such as ethnicity, income, education and gender. This article discusses the results of questionnaire surveys conducted by Afrobarometer among probability South African samples in 2008 and 2011. The results indicate that individual Internet use and mobile Internet access were lower than estimated in the literature. Furthermore, gender gaps, as well as considerable gaps between population groups and educational levels, were found in Internet and computer use, mobile ownership and access to mobile Internet and accessing news via the Internet. Conclusions regarding strategies for bridging the digital divide and integrating South Africa into the information society are discussed.     

论政府效能监察体系的构建

中国在进行廉政建设的同时,也在进行政府效能监察工作。效能监察是监察机关为维护公共利益对监察对象存在的不尽职、不正确尽职、影响其他人尽职,乃至玩忽职守渎职失职等违法、违纪行为进行的监督检查活动。由于理论支撑滞后和相对经验不足,至今没有形成公众认可的、在较大范围适用的政府效能监察体系。本文依据调查资料,分析了构建当代政府效能监察体系的实践基础,揭示了政府效能监察体系的内容结构,预测了政府效能监察的发展趋势,提出了健全和完善效能监察体系的措施。     

食品安检专业开设动物病理学课程的改革与探索

本文从专业现状及教学中存在的问题,对食品安检专业开设动物病理学课程的教学改革相关问题进行阐述,为全面培养高素质的食品安检专业人才提供经验。     

Double and group acceptance sampling plan for truncated life test based on inverse log-logistic distribution

This paper introduces a double and group acceptance sampling plans based on time truncated lifetimes when the lifetime of an item follows the inverse log-logistic (ILL) distribution with known shape parameter. The operating characteristic function and average sample number (ASN) values of the double acceptance sampling inspection plan are provided. The values of the minimum number of groups and operating characteristic function for various quality levels are obtained for a group acceptance sampling inspection plan. A comparative study between single acceptance sampling inspection plan and double acceptance sampling inspection plan is carried out in terms of sample size. One simulated example and four real-life examples are discussed to show the applicability of the proposed double and group acceptance sampling inspection plans for ILL distributed quality parameters.     

浅析生态化的外语教学环境

本文指出教育生态学是探讨和揭示教育生态系统的基本规律的学科,对于构建和谐、兼容的教学环境有着重要的意义。