GSM无源探测中基于空域宽零陷的DPI抑制新算法

强直达波干扰（DPI）抑制是GSM无源探测系统中的首要问题。根 据系统中DPI与目标回波的特征差异,提出了一种新的宽零陷空域DPI抑制算法。该算法基于 干扰和回波的DOA信息,采用改进的最小约束最小方差准则来实现特定方位上的空域滤波, 能够在对目标回波进行波束赋形的同时有效抑制DPI。仿真结果表明,该算法能获得不低于5 5 dB的抑制增益。     

中国居民消费的特点、影响因素以及发展趋势分析

本文采用西方相关文献分析消费问题,首先讨论中国居民的消费概况,然后用凯恩斯理论分析中国人高储蓄率、低消费率的原因,探讨消费信贷在中国的发展,并且对中国私人消费的发展趋势作出客观预测。     

企业家制度创业行为过程——基于吉利与绿源的案例分析

以吉利汽车和绿源电动车为研究对象,采用案例研究方法,分析企业家的制度创业行为过程。研究结果表明:企业家的制度创业行为过程包括构建变革使命、宣传变革使命、动员资源建立联盟以实施变革;在此过程中,企业家运用不同策略实现各环节的活动,最终达到制度创业的目标。     

中国城市养老机构的兴起:发展与公平问题

利用2009-2010年在南京市和天津市对养老机构的调查数据,描述了养老机构在两市的发展态势,比较了公办和民办机构在入住老人的健康状况及机构特征方面的差异。近10年来养老机构在两市迅猛增长,且以民办机构为主导。政府财政投入在两市公办机构的日常收入来源中占了相当的比重,而对民办机构的财政补贴则微乎其微。公办机构平均规模较大,在入住率上也远超民办机构。两市公办机构入住老人比民办机构入住老人在总体上更健康。公办机构在决定收住对象时比民办机构有更强的选择性。公众在享有现存养老机构资源时面临着机会不平等的问题。政府应确保在公办机构中公平、合理地分配公共服务资源,以最大程度地彰显其公益性,同时也应着力扶持民办机构,促进二者在社会化养老服务中公平竞争、协调发展。     

Evaluating the economic impacts of crop yield change and sea level rise induced by climate change on Taiwan's agricultural sector

This article investigates the effects of sea level rise and climate change induced crop yield alterations on Taiwan as well as possible adaptation strategies. For sea level rise of up to 5 meters, as much as 4.9% of total acreage and 16% of rice acreage would be lost. The empirical findings show that the sea level damages range from NT$ 0.84 to 4.10 billion while crop yield losses range from NT$ 1.79 to 2.55 billion. We investigate alternative adaptation strategies finding crop yield technological progress and tariff reduction could significantly mitigate these effects.     

网络营销绩效评价体系研究

网络营销是企业营销活动的主要形式,因此,网络营销的绩效评价对企业的成功经营至关重要。通过研究国内外关于网络营销绩效体系的文献,分析比较现有的网络营销绩效评价体系,介绍目前国内外对该体系的研究现状,指出目前评价体系在评价方法和指标选取上的不足,最后对目前网络营销绩效评价的研究和发展方向做了总结和展望。     

梳棉机动画制作

梳棉机属于纺纱设备,利用flash软件制作梳棉机动画,提高学生对专业的理解,有利于提高学生的职业能力。     

Adverse selection in mortgage securitization

Using several large data sets of mortgage loans originated between 2004 and 2007, we find that in the prime mortgage market, banks generally sold low-default-risk loans into the secondary market while retaining higher-default-risk loans in their portfolios. In contrast, these lenders retained loans with lower prepayment risk relative to loans they sold. Securitization strategy of lenders changed dramatically in 2007 as the crisis set in with most unwilling to retain higher-default-risk loans in return for lower prepayment risk. Contrary to the prime market, the subprime market does not exhibit any clear pattern of adverse selection.     

The Effects of Macroeconomic Factors on Pricing Mortgage Insurance Contracts

Numerous empirical studies, including Abraham and Hendershott (1996) , Muellbauer and Murphy (1997) , Leung (2004) , and Oikarinen (2009) , have identified a significant relationship between housing prices and macroeconomic factors. Using a linear regression on the comovement of macroeconomic factors and housing prices, this article employs an option‐pricing framework to price and hedge the fair premia of mortgage insurance (MI). Our model provides improved performance in terms of MI premium pricing, especially during periods that are characterized by high housing prices. Ignoring the impacts of macroeconomic factors on housing prices will lead to an underestimation of MI premia.     

Consumer valuation of health attributes for soy-based food: A choice modeling approach

Given that soy foods possess health-promoting attributes that offer the promise of reducing heart-related chronic diseases, this article employs choice experiments to estimate marginal willingness to pay (WTP) for soy attributes including taste, contents of soy protein, and health claim. Random parameter logit (RPL) models were estimated in consideration of potential heterogeneity across individuals in their preferences for soy food. Standard deviation parameters in the RPL models are highly significant, indicating that individuals have widely varying preferences for soy-based food products. Results suggest that, while taste is the dominating attribute that drives consumers’ WTP for soy food products, consumers do respond to the information provided in the health claim. Yet, consumers do not seem to be recognizing soy protein as the link to health benefits of soy foods.