山区超短波无线电通信链路的设计

叙述了山区超短波无线电通信电路设计的有关技术问题,给出了山峰绕射模式的传输损耗计算方法、绕射位置判断的方法及计算程序流程图,最后通过实例说明此方法的计算精度。     

The impact of advertising content on movie revenues

We analyze the contents of print ads in the motion picture industry (e.g., number of reviews quoted in the ad, the presence of a top reviewer, size of the ad, star, director, etc.). We find that external validation (a recommendation by a top reviewer) is more important to revenues than the informative content of the ad.     

口服液中粗多糖提取方法的改进

为了考察改进苯酚-硫酸法测定保健品口服液中粗多糖提取方法的可行性,以某保健品口服液为样品,对采用苯酚-硫酸法测定粗多糖含量时的多糖的不同提取条件与测定进行一个较为详细、系统的研究。结果表明:样品经改进提取条件后测定,试验结果表明有良好的线性关系,精密度RSD值为0.69%,稳定性良好,平均加标回收率为101.0%。该方法改进后提高了该实验的精密度和准确度,重现性高,并使结果更加可靠和稳定。     

黑米花色苷的功效

随着环境恶化和生活方式改变,高血脂、冠心病和癌症等发病率不断上升。我国2/3人口以稻米为主食,功能性稻米的"食疗""食补"已成为研究热点。黑米素有"世界米中之王"的美誉,其活性成分花色苷具有抗氧化、降血脂、抑癌抗癌和抑菌抗炎抗过敏等生理功能。本文对黑米花色苷的功效进行了简述。     

Does High Service Quality Reduce Risk or Create Idiosyncratic Returns?

This article explores the impact of service quality on idiosyncratic returns, idiosyncratic risk (nonsystematic risk), and beta (systematic risk). Service quality was derived from the airline quality rating, and three dependent variables were calculated by the Fama–French four-factor model. The data includes 1,512 monthly records from 1997 to 2006, across 21 airlines. Multiple regression and vector autoregressive models were applied to test relationships among all, low-cost, and non-low-cost airlines. The study found that service quality has a positive impact on idiosyncratic returns in non-low-cost airlines; non-low-cost airlines are less affected by changes in the external environment.     

Evaluating the London 2012 Games’ impact on sport participation in a non-hosting region: a practical application of realist evaluation

In the literature on Olympic legacies and impacts, there is a dearth of materials that specifically address the issue of Olympic impact for non-hosting regions. The literature tends to deal with impacts at a national level, or at a hosting-city region level, neglecting in large part the degree to which benefits can be leveraged by non-hosting regions. A further limitation identified in the literature is a failure to engage in detailed formal evaluation of policy implementation where assertions of potential policy impact are based on untested assumptions. This study is intended to address both of these concerns. It presents an empirical, ‘bottom-up’ application of a Realist Evaluation framework to assess the impact of a policy initiative – Workplace Challenge – aimed at leveraging enhanced sports participation in a non-hosting region – Leicestershire – in the period leading up to the 2012 Games. In doing so, it seeks to identify which causal mechanisms worked within this particular context to produce the observed outcomes. The evaluation results demonstrate that the programme represented a positive approach to fostering regular engagement with sport and physical activities for some groups in some types of organisations, and that awareness and motivational factors associated with the London 2012 Games are, in this case, linked (albeit weakly) to an increase in sport and physical activity participation for specific groups taking part in the programme in particular organisational contexts.     

碳排放权市场价格发现功能的实证分析

碳期货市场在碳市场扮演着极为重要的角色,通常具有价格发现的功能。本文分析了国际碳排放权交易市场两种主要商品EUA、CER的期货价格关系．通过向量误差修正模型和公共因子模型对欧盟碳期货EUA与CER期货进行了实证研究。结果显示：EUA、CER这两种主要碳排价格指标之间具有很高的相关性,存在长期均衡的协整关系,均扮演着重要的价格发现角色,同时EUA期货价格引导CER期货价格变化。     

大数定律与小微企业授信模式研究

贷款难一直是小微企业面临的最大问题。商业银行从自身盈利角度出发,面对日渐突出的金融脱媒现象,经营思路亟需转型,开发小微企业贷款业务以开辟新的业务增长点。本文基于大数定律,从商业银行角度出发,分析了小微企业授信模式。授信模式的选择和贷款利率确定是本文研究的两个重要方面,风险管拄贯穿整个授信过程。     

美国货币政策转向及其背后的逻辑

2007年爆发的金融危机对美国金融系统与实体经济造成了严重冲击.为摆脱危机及刺激增长与就业,美国货币政策发生了五大转向:一是货币政策工具由“常规”转向“非常规”;二是货币政策内容由“有限”转向“无限”;三是货币政策职能由“支持经济”转向“服务财政”;四是货币政策操作领域由“金融市场”转向“实体经济”;五是货币政策效果由“降低风险”转向“放大风险”.美国货币政策发生转向有其背后的深层逻辑,即:美元霸权体系的存在-美国政府积累巨大债务-美联储对传统规则的突破-通过实施量化宽松将债务货币化.     

现代商业银行操作风险及其管理机制探讨

操作风险管理一直是摆在商业银行面前的一个十分重要而紧迫的课题,操作风险事件纷繁复杂,比之于信用风险和市场风险更难以防范,然而操作风险管理也并非没有规律可循.本文从全面认识操作风险的内涵与特征入手,借鉴国际一流银行操作风险管理经验,通过连点成线,实施集成连贯的操作风险管理;点线结合,培育相互协作的内部关系和经纬交织的内部控制环境;定性和定量相结合,搭建有效的操作风险管理框架,构建起商业银行操作风险管理的长效机制.