无人机通信总线应用系统的研究

本文介绍了我国无人机的发展现状,对几种总线标准进行了比较,最终选择了1553B总线,对无人机通信系统进行了规划,并设计了一套地面测试系统,给出了系统的软硬件实现方法。     

浅析李培林的社会结构转型理论思想

国内不同学者对社会转型研究有不同的视角,李培林教授基于中国当时实况,首先从中国经验的实践观出发,阐明中国社会转型发生背景,然后着重分析＂另一只看不见的手＂——社会结构转型在资源配置和经济发展中的作用,最后李培林教授指出中国社会结构转型过程中会带来的＂非预期后果＂。     

股权结构与公司绩效的关系分析——来自中国证券市场的经验证据

本文以净资产收益率和市净率为被解释变量,以股权构成为解释变量,使用2003年度中国上市公司的相关数据,考察了股权结构对上市公司绩效的影响。而国家股可能产生负面影响,同时法人股东在中国的公司治理可能会承担至关重要的责任,大型机构投资者和战略投资者在公司治理中的作用应该得到进一步的发挥。     

IFRS within the Multi‐GAAP Canadian Reality: A Teaching and Learning Imperative for Intermediate Financial Accounting

Intermediate accounting instructors need to be engaged in the specific complexities and challenges of the new international financial reporting standards (IFRS) reality within the Canadian multi‐GAAP environment. Intermediate accounting courses are directly affected because they represent substantive coverage of the corporate reporting environment. In this article I make the case that these courses should primarily reflect IFRS standards in order to entrench IFRS competencies in students who wish to pursue a professional designation, to prepare students for the global environment, and to concentrate IFRS expertise issues in a robust instructor group. The competency maps of each of the three Canadian professional accounting bodies clearly reflect IFRS. Students can analyze the implications of major areas of policy differences between IFRS and private enterprise GAAP (PEGAAP) through specific targeted course coverage, but also through active learning elements, particularly research elements. This commentary reflects some of the active debate occurring regarding postsecondary curriculum as Canada adapts to IFRS and PEGAAP, and encourages action.     

Infrastructure development for alternative fuel vehicles on a highway road system

A new mathematical model for positioning alternative fuel (AF) refueling stations on directed-transportation networks with the objective of maximizing the coverage of path flow volume is proposed. This model is especially designed for developing an AF infrastructure on toll roads and other highways, where vehicles do not need to exit the road network for refueling, some candidate station locations are not located at interchanges, and some stations may only service vehicles on one driving direction. The proposed model is applied to the Pennsylvania Turnpike System using the 2011 truck traffic data and considering different vehicle driving ranges.     

高速铁路车站到发线运用优化研究

高速铁路车站到发线运用计划根据列车运行计划、动车组交路计划编制各列车占用到发线的起止时间,以均衡、合理使用到发线和方便旅客上下车为原则,为每一列车安排合适的到发线。在分析高速铁路车站到发线运用特点和原则的基础上,建立高速铁路车站到发线运用的0-1规划模型,并利用遗传算法求解。通过算例分析,编制长沙南站的到发线运用方案,说明方法的具体应用。     

读者嗜爱李煜词探秘

历代读者对李煜词耳熟能详、情有独钟,这源于李煜词精湛高超地综合使用了多种艺术表现手法,尤其是直抒胸臆和鲜明对比两种手法运用得出神入化,对读者的内心具有强大的冲击力。其词余音绕梁的悲剧美恰好契合了民族的审美心理,李煜从一己的遭际、变故中反映出人类的共通之处,从而在传播接受中超越了时空。     

Backpacker ethnography

This paper presents an ethnographic study of the travel culture of international backpackers. Their sociodemographic characteristics are described, the contours of a concept of tourism culture are delineated, and on that basis, that of backpackers is outlined, with particular focus on the key phenomenon of road status. The analysis of backpacker tourism as a culture furthers the comprehension of change within the phenomenon. Examples of factors of change include the guidebooks, the short-term backpackers, and in particular the internet. This study demonstrates the merit of a dynamic concept of culture where culture takes place whenever activated by social circumstances.     

入世后金融创新的国际扩散对我国金融业的影响

在目前我国金融创新研发能力还比较低的情况下，通过扩散方式进行金融创新是我国金融创新的主要形式。对入世后金融创新国际扩散对我国金融业的影响进行了分析。