DDS的背景噪声分析

首先对２种不同类型的幅度量化杂散信号进行了描述和时域分析,然后用离散傅里叶变换法着重对无相位舍位民政部下的幅度量化杂散信号进行了频谱仿真。得到了一些关于其频谱特征和杂散水平的规律性结论,这些结论对ＤＤＳ的工程应用有重要的指导作用。     

Advertising Sensitive Products

The results of two nationwide studies of opinions on the advertising of sensitive products in the US are presented in this study. Results show higher levels of approval than had been indicated in previous studies. Several significant differences are observed when the results are cross-tabulated using a number of demographic variables. Conclusions are drawn and implications for managers and researchers are summarized.     

二氯苯生产技术进展与发展趋势

介绍了二氯苯生产方法、用途、市场需求及发展趋势,重点介绍了二氯苯异构体分离技术。针对国内对、邻二氯苯生产现状,提出一些发展建议。     

非参数回归技术在经济计量模型分析中的应用

在微观计量经济研究中,居民收入与消费分布结构的研究通常采用参数模型进行实证分析,但是实际经济环境中往往存在一些不确定的因素,参数模型所提供的结果并不完全与实际相符合。在计量经济模型分析中采用非参数回归技术,在数据较多的情况下,不需要预先确定变量之间的函数关系,可灵活机动的从多个方面考察收入与消费的相依关系和变化趋势,并可以证明非参数方法的结果优于常规的参数方法。     

最低工资对我国就业性别差异的影响研究——基于中国省际面板数据和行业面板数据的分析

文章基于中国1996-2012年省际面板数据和城镇单位行业面板数据,在控制了教育、劳动供给、经济开放、经济发展、就业环境和时间等因素后,考查了相对最低工资和绝对最低工资的提升对城镇单位就业性别差异的影响。结果表明,最低工资对就业性别差异的影响存在自我修正机制,当期影响与滞后影响方向相反;相对最低工资的综合影响以正向为主,但影响较微弱,绝对最低工资的影响主要体现在滞后效应中,综合影响以负向为主;在高工资行业和女性就业集中度较低的行业中,相对最低工资的当期影响存在一致的负向性、滞后影响以正向为主,绝对最低工资的当期影响以负向为主、滞后影响以正向为主;在女性就业集中度较高的行业中绝对工资的滞后影响以负向为主。     

Location Advantages,Firm Advantages,and Export Success in the Latin American Automotive Parts Industry

Abstract

This paper examines the influence of location advantages and firm-level advantages on the propensity of Latin American firms to export. An empirical test based on Latin American firms in the automobile parts industry suggests that firms in more competitive Latin American country environments are more likely to export than those in less competitive country environments. Also, older and larger firms are more likely to export than are younger and smaller firms, and businesses that are subsidiary companies are more likely to export than are independent companies. Implications for managers and policy makers are presented.     

Are some entrepreneurs more overconfident than others?

Entrepreneurs are more susceptible to certain cognitive biases than are managers who are not entrepreneurs, but it is not clear why. In an effort to help explain why, I examine differences in the degree to which entrepreneurs exhibit the overconfidence bias. Results show that individual age, firm decision comprehensiveness and external equity funding affect the degree to which entrepreneurs are overconfident. In addition, founder-managers are shown to be more overconfident than are new-venture managers who did not found their firms. The results suggest that entrepreneurs' cognitive biases are a function of both individual and contextual factors.     

Entrepreneurial characteristics and the size of the new firm: A model and an econometric test

This paper examines entrepreneurial influences on the size of the new firm. Theory and previous empirical research indicate that the entrepreneurial attributes most likely to influence the characteristics and performance of new firms are motivation, workskills and information. The results of a regression analysis confirm these hypotheses when turnover and total assets are the dependent variables but are less conclusive when employment is the dependent variable. Possibly the most interesting finding is that the entrepreneurs who create the most jobs are those who are highly motivated, have managerial skills and whose firms are in the manufacturing sector.     

Understanding how retail environments are perceived: a conceptualization and a pilot study

A conceptual framework for understanding how perceptions of retail environments are formed is developed in this paper. In developing the framework, three main issues receive theoretical attention. First, the problem of conceptualizing retail environments is tackled. Second, the dimensions of environmental perception are discussed from the standpoint of retail arenas. Third, the factors that moderate how different retail environments are perceived are treated producing a few research propositions. The article also reports the findings of a pilot study. Both quantitative and qualitative analyses are conducted and they show that the separate perceptual dimensions manifest themselves in distinct ways in different retail environments. Finally, the theoretical and managerial implications are discussed and future research suggestions are spelled out.     

智能天线中空时信道模型的分析与比较

当前,有管理的自由贸易政策已经成为对外贸易政策的国际趋势。在这种国际背景下,本文从中国对外贸易政策的现状出发,结合相关的贸易理论,阐述了中国加入WTO以后,对外贸易政策应走的创新路线。并就此路线,给出了从对外贸易政策目标到具体措施的初步建议。     

Hyperfiliation and cultural citizenship: African American consumer acculturation

The experiences of African American expatriates in South Africa are explored to explain how acculturation in circumstances of hyperfiliation influences cross-cultural consumption for the purposes of performing cultural citizenship. The acculturation sub-processes of revision, restoration, and retroversion are analyzed to examine the ways in which social capital is mobilized in citizenship projects. These aspects of expatriate experiences are unpacked, theoretical implications are identified, and managerial implications are discussed.     

Patience, persistence, and welfare costs of incomplete markets in open economies

We investigate the welfare implications of alternative financial market structures in a two-country endowment economy model. We obtain an analytic expression for the expected lifetime utility of the representative household when sovereign bonds are the only internationally traded asset, and we compare this welfare level with that obtained under complete asset markets. The welfare cost of incomplete markets is negligible if agents are very patient and shocks are not very persistent, but this cost is dramatically larger if agents are relatively impatient and shocks are highly persistent. For realistic cases in which agents are very patient and shocks are highly persistent, the welfare cost of incomplete markets is highly sensitive to the specific values of these parameters.     

加强国有资产管理努力创建节约型海关

当前,海关单位国有资产管理方面存在的问题,主要是管理不严、责权不清;购进实物资产,缺乏严密的验收审批程序。导致“重业务、轻资产,重建设、轻管理”的原因,主要在于管理机构不健全,管理人员缺乏;管理手段落后,效能不高;制度建设滞后,管理不规范;海关单位的资产调剂困难等。海关单位应提高认识,建章立制,强化国有资产管理观念;全面清产核资,摸清家底;加强对出租房屋的监管;充分利用预算、政府采购强化对资产的配置管理;加强固定资产的事中、事后监控;加强对国有资产管理人员的培养,使国有资产管理工作规范化、科学化、专业化。     

高动态GPS卫星信号模拟器关键技术分析及应用

介绍了高动态GPS卫星信号模拟器的组成,阐述了模拟器的工作原理,给出了在研模拟器的主要技术指标,分析了模拟器研制涉及到的部分关键技术:高动态信号的产生与精度控制、电离层延迟误差模拟、多径信号模拟和差分数据产生,最后列举了高动态GPS卫星信号模拟器的几种应用。     

投资者关系职能研究综述与展望——基于平衡计分卡框架

投资者关系职能是上市公司中一项普遍存在的重要职能,但理论研究非常缺乏。本文基于平衡计分卡的框架,从财务目标、顾客、内部流程、学习与成长四个层面回顾总结了投资者关系职能现有的研究成果,在已有研究基础上总结提炼了各层面的绩效衡量指标,提出从投资者关系顾客细分、投资者关系产品细分和投资者关系顾客产品偏好的视角研究投资者关系职能,归纳了投资者关系产品的细分方法,并构造了投资者关系职能的平衡计分卡模型,最后分析了现有研究中的不足并提出了未来研究展望。     

高速电路设计中的信号完整性研究

通过对高速电路特点的介绍，讨论了高速电路中影响信号完整性的因素。针对这些问题，提出了解决措施。最后介绍了Mentor公司的Board Station在高速电路设计中的应用。     

Corporate governance in mutual insurance companies

The key corporate governance issues facing mutual insurance company managements are examined. Results of a comprehensive survey of the state of corporate governance in mutual property-liability insurance companies are presented. Recommendations for changes in governance practices by mutual companies are presented and their implications are discussed.     

Brand Networks as the Interplay of Identities,Selves, and Turtles: Commentary on “Interplay between intended brand identity and identities in a Nike related brand community: Co-existing synergies and tensions in a nested system”

This commentary emphasizes the networked nature of brands. Brands are identities, and identities are meanings. Meanings are always embedded in networks of association. Therefore, all understandings of brands are necessarily vast, complex, and incomplete, especially in the contemporary age of branding.     

Review and appraisal of subliminal perception within the context of signal detection theory

There are many claims that stimuli too weak to be detected can affect behavior in powerful ways. There are also many counterclaims that such phenomena are artifacts. The origins of the subliminal perception controversy are traced and some of the problems with the concepts of threshold and awareness are noted. It is suggested that any treatment of the phenomenon must consider the implications of Signal Detection Theory. The basic concepts of the theory are reviewed and the controversy is translated into its terminology. Some studies on masked-primes are summarized and evaluated within that context. While It is possible to obtain an effect for primes that are below a level of claimed awareness, such a subjective definition of the threshold is often problematic, because it confounds stimulus detectability with response bias. When an objective definition is adopted (i.e., d' = O), and proper psychophysical methods are followed, there is no support for the effectiveness of undetectable stimuli. Lastly, a recent approach is briefly described which uses phenomenal awareness as a basis for distinguishing between conscious and unconscious perceptual processes.     

TACAN信号处理的MATLAB仿真技术分析

介绍了TACAN系统的信号处理及其计算机仿真.利用MATLAB对TACAN信号的中频数字化及基带信号处理过程进行仿真分析,介绍了同相正交积分数字锁相测方位算法并对其进行了仿真验证.