基于物联网的无人值守远程计量系统的设计与实现

针对厂矿计量系统的计量节点多,计量操作繁杂,人力成本较高,而且工作环境差,难于防范计量过程的作弊行为等诸多弊端,提出一种基于物联网的无人值守远程计量管理系统的设计.设计方案在充分利用已有硬件资源的基础上,通过RFID射频技术自动识别车牌、红外压边智能检测和视频监控技术等,对数据进行综合分析与管理,达到远程计量无人值守的目的.不但能使计量的数据信息及时准确,还能有效防止计量过程的作弊行为,进而实现优化企业资源配置,降低生产运营成本,提高管理效率,提升企业的市场竞争力.     

从企业境外套期保值的交易方式分析国储期铜巨亏事件

通过国储期铜巨亏事件始末,指出企业进行套期保值是非常必要而且是十分有利的,但有些企业非但没有严格遵守境外套期保值的交易规则,更是违背交易方式,由境外套期保值演变为境外过度投机,针对交易过程中出现的问题提出企业进行境外卖出套期保值时,在传统的期货套保方式中引入期货期权方式进行境外套保,从而避免民族资本遭受损失。     

SHORT‐RUN POLICY COMMITMENT WHEN INVESTMENT TIMING IS ENDOGENOUS: ‘MORE HARM THAN GOOD?’

In our model, firms choose when to set cost‐reducing investment and the government, which only has short‐run commitment power, sets an output subsidy. We show that firms that delay investment without government intervention have an incentive to invest early under policy activism, strategically underinvesting or overinvesting to obtain larger subsidies. The policy scheme thus creates a new, potentially more harmful, distortion. Under oligopoly, a firm has a weaker incentive to manipulate policy than under monopoly, which makes policy intervention less harmful. We investigate when the government may do better by adhering to laissez‐faire than by engaging in active policy intervention.     

英语视频在英语课堂教学中的应用

本文讲述了如何运用英语视频作为教学补充资料进行课堂英语教学。介绍了如何选择和准备视频素材,如何利用现实生活中的英语开展活动的过程,以及从中培养学生们听力、口语、词汇、语法的技能和对文化的理解。在本文中出现的一些议题,例如材料的难度、字幕和配音的问题,也将在文章中予以讨论和分析。     

Acceptability and Ethics of Product Placement in Sport Video Games

Product placement in sport video games is an emerging area of marketing and advertising communication, but it also raises controversial ethical issues. In order to investigate these issues from a consumer perspective, this study examines the perceptions of the acceptability of product placement in sport video games (SVGs). Data were gathered from 253 sport video gamers using an online survey. The results indicate that while sport video gamers generally have favorable attitudes toward product placement in sport video games, ethically-charged products such as alcohol, cigarettes, and guns are perceived as less acceptable than other products. Individual differences among sport video gamers are found based on their related attitudes, hours of playing sport video games, and gender. Also, sport video gamers who have favorable attitudes toward product placement, in general, are more likely to intend to purchase a product or brand which may be placed in sport video games.     

基于视频图像的车辆检测算法研究

固定镜头下视频序列中的运动汽车目标的检测、分割、跟踪及计数等底层视觉问题进行了研究,提出了计算交通流量的算法。仿真实现表明:此算法可以有效的去噪、检测目标并计数。     

基于因特网的监控录像系统的实现

介绍了一种基于因特网的监控录像系统，详细介绍了本系统的建模和软硬件模型，并阐述了本系统的软硬件实现方法。     

Single Stock Futures as a Substitute for Short Sales: Evidence from Microstructure Data

Abstract:  We examine how the introduction of single-stock futures impacts short sale costs and short interest levels in the underlying spot market. We find that short selling in the underling securities declines, after futures are introduced, the cost of borrowing stock for short sales declines and the available unborrowed supply of lendable shares increases. These results are consistent with futures exchanges providing a low-cost substitute market for establishing short positions. Microstructure evidence also suggests that the lower cost and greater ease of short selling via futures markets draws informed traders from the spot market.     

视频节目复用情况下的一种码率控制方法

针对图像通信中多路节目复用的情况，采用联合码率控制的方法，通过参量反映图像的统计特性，进而根据图像的复杂程度在各路节目之间动态分配比特，以维持节目图像质量的均衡。试验表明，它优于传统的独立编码方法。     

另类投资正在向主流演变——欧美对冲基金的新趋势分析

近期,美国次贷危机引发了全球金融机构的大面积亏损和恐慌。对冲基金在这次危机中也难于独善其身,次贷及其衍生证券的多头机构损失惨重。由于对国际对冲基金认识的错位,一些学者再一次夸大对冲基金在此次金融事件中的破坏作用。而在我国,随着《证券公司融资融券业务试点管理办法》出台,标志着股票市场放大操作和做空机制的开始;下一步,随着金融期货,尤其是股指期货和债券期货的推出,做空和杆杠融资机制将得到进一步的完善,国内市场对冲基金的生长环境正在日趋成熟。本文旨在通过研究近代欧美对冲基金的最新发展状态,披露国际对冲基金的市场出现的最新动向,为中国市场正确对待可能出现的对冲投资行为和对冲基金,实施有效的疏导和监管政策提供一些有益的参照。