通道费的生产及其对生产商利润影响——基于品牌价值视角的研究

通道费的收取引起了渠道冲突和零供关系紧张,“效率促进论”和“市场势力论”两大阵营从自己的领域进行了研究,但对于通道费对生产商利润影响没有一致的结论。文章尝试从品牌价值的视角重新研究通道费的生产,解释了通道费的存在基础--零售商市场势力及其来源,并在此基础上研究了零售商品牌价值对零售数量和生产商利润的影响,最后通过我国制造业的数据说明通道费没有降低生产商利润的结论,这一研究不但具有理论研究的重要意义,更具有指导政策方向的现实价值。     

为何中国员工偏好沉默——威权领导对员工建言的消极影响

采用问卷调查方式收集了66名领导与其286名下属的配对样本,运用层级回归的方法,探讨了威权领导对员工建言的影响及其作用机制。结果表明,威权领导和员工权力距离都对员工建言存在显著的负向预测效应。另外,员工权力距离还会调节威权领导对员工建言的效应,当员工权力距离较高时,威权领导与员工建言间的关系较弱。最后,员工心理授权部分中介威权领导、员工权力距离对员工建言的影响,完全中介威权领导和员工权力距离的交互项对员工建言的影响。这些研究结果有助于理解中国传统领导行为对员工建言的影响以及影响的中介机制和边界条件,具有重要的理论意义和实践意义。     

Offshoring and Reshoring: The Roles of Incomplete Contracts and Relative Bargaining Power

This paper demonstrates that an increase in bargaining power of Northern firms relative to that of their Southern contractors can trigger reshoring if the North-South wage differential is moderate, such that only industries with a high share of unskilled labor find outsourcing profitable. However, such an increase in Northern bargaining power can increase offshoring if the wage differential is so high that even industries with a low share of unskilled labor also offshore.     

Purchasing Power Parity and Price Fluctuations in China before July 1937

In this paper, we provide an empirical investigation of the purchasing power parity (PPP) hypothesis for China before July 1937. Using the monthly data from 1922 to 1937, we find clear and consistent evidence in favor of the purchasing power parity relationship. This naturally leads to the conclusion that the degree of Chinese market integration with the West was substantial before July 1937. These findings offer an empirical interpretation of the rise and fall of the Chinese price level during the Great Depression. It also has further implications of the impact of the American Silver Purchase Act of 1934 and the assessment of the 1935 currency reform on the Chinese economy.     

单频网多播系统中的开环半动态功率分配算法

在单频网多播传输中,传统的全反馈动态功率分配数算法需要根据每个时隙反馈的用户瞬时信道信息进行实时的调整,所以造成了资源分配频率快、上行反馈开销大的缺点。为了克服这个缺点,提出了一个低复杂度、没有用户反馈的单频网多播开环半动态功率分配算法。首先在各小区等功率分配的假设下,根据单频网的形状信息算出各小区等价信道增益,然后再根据这个增益值,实现满足速率需求情况下的各小区功率分配。仿真结果显示,与全反馈的动态功率分配算法相比,该算法以一小部分性能损失为代价,大大减少了单频网的上行反馈和资源分配的开销,因此更适用于实际的单频网多播系统。     

一款小型化S频段高谐波抑制功率放大器的设计

为了确保卫星系统电磁兼容性满足要求,设计了一款应用于卫星测控通信系统的小型化S频段高谐波抑制功率放大器。通过在功放输出端设置谐波抑制网络改善了电路的谐波抑制性能。采用集总与分布参数元件相结合匹配形式,实现了电路的小型化设计。电路尺寸38.5 mm×28.2 mm。通过对功放腔体结构进行细化建模仿真,确保了功放电路的稳定性。实测结果表明,当工作频率为2.52 GHz时,功放1 dB压缩点大于31 dBm,谐波抑制度大于61 dBc,功率附加效率高于35%,1 dB带宽大于320 MHz。与国内外同类产品相比,该功放在谐波抑制性能等方面具有明显优势。     

一种改进的电力线通信系统脉冲噪声抑制方法

为了抑制脉冲噪声对电力线正交频分复用（OFDM）通信系统的影响,最常用的方法之一是在接收端OFDM解调器之前前置一个置零非线性单元,即传统置零法。然而,由于引入了非线性失真,其性能并不理想。针对传统置零法引起的非线性失真问题,提出了一种基于迭代消除非线性失真的改进置零法。首先,对接收到的时域OFDM信号进行脉冲噪声检测和置零处理;然后,在频域利用已检测的符号来重构时域置零处理引入的非线性失真,并通过迭代提高重构的准确性;最后,从频域接收信号中减去重构的非线性失真。仿真结果表明,所提改进算法与传统置零法相比,有非常大的性能提升,增强了电力线OFDM通信系统对脉冲噪声的抵抗能力。     

Theoretical perspectives of supplier–buyer long-term relationships in India

Purpose: The purposes of this study are to investigate changing Indian supplier–buyer relationships and to propose an effective conceptual model using theoretically developed constructs such as power, performance, satisfaction (economic and noneconomic), conflict (economic and noneconomic), trust, cooperation, switching cost, and commitment

Methodology/approach: This study is focused on supplier–buyer relationships among Indian companies in the processed/packaged (not fresh) food business. All of the measures for the constructs were developed for and empirically tested in previous studies. Confirmatory factor analysis and path analysis were used to test the conceptual model.

Findings: First, Indian suppliers’ power sources and performance significantly influence satisfaction and conflict. Second, satisfaction and conflict are significantly related to cooperation, trust, and switching cost. Third, cooperation and trust have a significant impact on commitment.

Research implication: One of the unique aspects of the study is to analyze the differential effects of satisfaction and conflict in India. Using dichotomized (economic and noneconomic) constructs, the ways in which Indian buyers’ economic satisfaction, noneconomic satisfaction, economic conflict, and noneconomic conflict are related to other relationship constructs (power sources, performance, cooperation, trust, switching costs, and commitment) are investigated.

Originality/value/contribution: For global companies, a key requirement for success is how to develop and sustain long-term relationships with local companies. This study suggests practical and information for successful marketing strategies to establish long-term supplier–buyer relationships in India.     

When Galbraith Frightened Conservatives: Power in Economics,Economists’ Power,and Scientificity

In this article, I first expound John Kenneth Galbraith’s general theory of power. Galbraith always took into account phenomena of power in economics, and shed light on the power of economists in particular. I then show how the reaction of conservatives to the broadcasting of the Age of Uncertainty highlights the relevance of Galbraith’s theory. Letters exchanged by conservative Lords in an effort to fight against Galbraith’s ideas paradoxically illustrate his theory. This leads to questions about the status of economists, popularizers, and experts. Finally, I argue that convictions have a crucial role in scientific production, and that Robert Solow’s distinction between the “serious scholars” and the proselyte economist is irrelevant because of its incapacity to understand how economists produce knowledge.     

基于知识权力和知识交互行为的产业集群多重知识网络演化分析

针对产业集群知识网络中客观存在但却未受关注的知识权力,结合自适应知识交互行为,采用多主体建模与仿真方法,分析知识权力的动态变化导致的产业集群多重知识网络演化。结果表明:知识权力差距及知识交互行为是促使产业集群多重知识网络形成及演化的基础,产业集群多重知识网络的演化过程具有典型的阶段性特征,其网络结构呈现出网络节点密集性与稀疏性相结合、强联结与弱联结并存、度分布高度异质性的特征。利用实际产业集群网络验证仿真结果,证明了该仿真模型的可信性。