基于GIS应用的民族理论与政策研究方法探讨

中国民族理论与民族政策研究是中国政治生活中的大事件，其研究方法如何对研究成果的产出有关键性的影响。GIS是一种新的研究方法，具有对空间数据的获取、存储、分析、可视化等应用功能。国外已经开始把GIS运用于社会科学领域，近年来更加重视它的应用与开发。     

A study of DEA models without explicit inputs

In performance evaluations, data without explicit inputs (such as index data, pure output data) are widely used. To directly use such data, this paper presents a study on building DEA models without explicit inputs, so-called DEA-WEI models, which are applicable to the evaluation applications where inputs are not directly considered. We provide an axiom foundation of these kinds of models, and further discuss how to incorporate value judgments of decision makers into these DEA-WEI models. Several such models are derived. Finally, applications of the DEA-WEI models are presented.     

Shop floor control system for tool rooms

A shop floor control system (SFCS), which is the most important component of any production control system, ff has a direct e ect on the productivity of a tool room. The SFCS presented in this paper aims at streamlining various tool room activities, such as process planning, operations scheduling, loading, progress monitoring, and performance monitoring. The system discussed in this paper is characterized by simplicity and is user friendly. Basic information, consisting of three types of information (order details, process details, and part details), is input through interactive dialogue sessions. On-line updating of the process information is carried out, again through interactive dialogue sessions. The basic input to the system along with the on-line updating enables a number of useful and important reports and documents to be generated ff by the system for e ective control of the shop floor. The reports generated include operations scheduling, process sheet, part list, ffi job card, load pending report, e ciency report, etc. This SFCS is developed for a medium sized tool room in an automotive company and its successful implemention reduced paperwork and improved resource management and has resulted in productivity. It can be said that this system offers a first venture into computer integrated manufacturing (CIM) for a tool room.     

世界博览会与世界历史整体发展

世博会是全景式地反映世界各国政治、经济、社会、文化和当代科技成就与发展前景的全球性盛会,是体现世界文化相互交流与融和、反映人类思想最新结晶与发展方向、记录全球文明发展轨迹与成就的历史性坐标.世博会不是一个城市的博览会,它更是全国的、全球的博览会.世博会的真正基础一直建立在"时代的希望与欲望"之上,它代表着观众的热情,能折射出一个世纪的历史动态.研究世博会,必须把世界作为一个整体、一个全局来考察.只有把握世界的整体发展,才能揭示世博会的进程及其发展趋势.     

Estimation with right‐censored observations under a semi‐Markov model

The semi‐Markov process often provides a better framework than the classical Markov process for the analysis of events with multiple states. The purpose of this paper is twofold. First, we show that in the presence of right censoring, when the right end‐point of the support of the censoring time is strictly less than the right end‐point of the support of the semi‐Markov kernel, the transition probability of the semi‐Markov process is nonidentifiable, and the estimators proposed in the literature are inconsistent in general. We derive the set of all attainable values for the transition probability based on the censored data, and we propose a nonparametric inference procedure for the transition probability using this set. Second, the conventional approach to constructing confidence bands is not applicable for the semi‐Markov kernel and the sojourn time distribution. We propose new perturbation resampling methods to construct these confidence bands. Different weights and transformations are explored in the construction. We use simulation to examine our proposals and illustrate them with hospitalization data from a recent cancer survivor study. The Canadian Journal of Statistics 41: 237–256; 2013 © 2013 Statistical Society of Canada     

Prediction based classification for longitudinal biomarkers

Assessment of circulating CD4 count change over time in HIV-infected subjects on antiretroviral therapy (ART) is a central component of disease monitoring. The increasing number of HIV-infected subjects starting therapy and the limited capacity to support CD4 count testing within resource-limited settings have fueled interest in identifying correlates of CD4 count change such as total lymphocyte count, among others. The application of modeling techniques will be essential to this endeavor due to the typically non-linear CD4 trajectory over time and the multiple input variables necessary for capturing CD4 variability. We propose a prediction based classification approach that involves first stage modeling and subsequent classification based on clinically meaningful thresholds. This approach draws on existing analytical methods described in the receiver operating characteristic curve literature while presenting an extension for handling a continuous outcome. Application of this method to an independent test sample results in greater than 98% positive predictive value for CD4 count change. The prediction algorithm is derived based on a cohort of n = 270 HIV-1 infected individuals from the Royal Free Hospital, London who were followed for up to three years from initiation of ART. A test sample comprised of n = 72 individuals from Philadelphia and followed for a similar length of time is used for validation. Results suggest that this approach may be a useful tool for prioritizing limited laboratory resources for CD4 testing after subjects start antiretroviral therapy.     

现代汉语状态形容词的外部形式和内部结构分析

目前在对现代汉语状态形容词进行分类时,大部分学者都借鉴了朱德熙先生的外部形式的分类方法,将状态形容词分成AA式、AB式、ABB式、AABB式等几个不同的类别。本文认为应将外部形式和内部结构结合起来对状态形容词进行分类,才能更好地研究状态形容词。本文通过对所选的231个状态形容词进行外部形式和内部结构的分类,弥补了目前较为通行的单纯进行外部形式分类方法的不足。     

论“主动性学习”在大学英语教学中的重要性

"主动性学习"在大学英语教学中起着非常重要的作用.它不同于传统的英语教学方法,传统的英语镲教学在运用语言进行交流方面有其局限性.计算机教学手段能解决传统的英语教学法中的许多问题.在本文中着重强调了如何激励学生进行"主动性学习".