跨国公司在华并购与隐性垄断

在当前全球化浪潮中,跨国并购已成为跨国投资的主要方式,更是我国今后引资的重要趋势。然而这种不同性质的多种资本主体并存于中国市场的特质将直接决定彼此的生存空间和获利机会,并最终决定投资的绩效和宏观经济稳定性。分析跨国公司进入中国市场的方式和在中国市场上进行竞争的手段,并从品牌、技术和币场占有率三个方面考察跨国并购对我国市场结构的影响,可以得出已经形成隐性垄断的结论,相应地从企业和政府两个层面提出对跨国并购实施竞争规制的应对策略。     

A “load-carrier” perspective approach for assessing tourism resource carrying capacity

To address the challenge of global tourism resources being overloaded or underutilization, there requires an adequate method for assessing the tourism resource carrying capacity (TRCC). However, the majority of previous evaluation perspectives on TRCC are limited by thresholds. This paper develops an innovative approach for assessing TRCC from the “load-carrier” perspective. TRCC is assessed by exploring the interaction between the carriers and loads of tourism resources. Chongqing city in China is employed as the case city to demonstrate the application of the established TRCC method. The conclusions are as follows: 1) This study elaborates the new connotation of TRCC from the perspective of “load-carrier”, and establishes the TRCC evaluation system based on the dynamic relationship between the carrier and load of tourism resources. 2) The proposed TRCC evaluation method is proved effective through an empirical study of Chongqing. 3) Chongqing's case unveils that the overload performance of TRCC can be dynamically monitored and predicted. By applying the TRCC evaluation methodology developed in this study, tourism managers and policymakers can identify whether it is the load or the carrier of tourism resources that affect the performance of TRCC, thereby taking targeted policy measures to eliminate potential risks of overload or underutilization.     

Strategic Purity and Efficiency in the Motor Carrier Industry: A Multiyear Panel Investigation

Two questions facing motor carrier managers are (1) whether carriers should specialize in providing full truckload (TL) or less‐than‐truckload (LTL) services vis‐à‐vis offering mix of both and (2) whether this decision is contingent on carrier size. Yet, the literature provides little guidance because research to date has offered contradictory theoretical predictions and inconsistent empirical findings. Drawing on the theory of strategic purity and information processing theory, we explain why service specialization is likely to increase carriers' technical efficiency and why size will have a more pronounced effect on technical efficiency for carriers specializing in LTL services versus TL services. To test our theory, we assemble a panel data set from archival government sources regarding general freight motor carriers' provision of LTL and TL services. We measure carriers' technical efficiency using data envelopment analysis and test our hypotheses by fitting a series of panel data mixed‐effects models. Our results indicate that carriers are most technically efficient when they specialize in one service type. We also find that size positively affects technical efficiency but only for carriers specializing in LTL services; no returns to scale with regard to technical efficiency exist for carriers specializing in TL services.     

An Exploratory analysis of flight delay propagation in China

Delay propagation is the flight departure delay caused by the arrival delay of pre-segment flight. Chinese airline market has suffered very poor on-time performance (OTP) in recent years. It is, however, unclear whether delay propagation prevails as one major source for such problem. This study first aims to empirically quantify delay propagation in the Chinese airline market. Specifically, we shed light on heterogenous levels of delay propagations across different airports and airlines. Then, the distinct delay propagation patterns in China are also discussed and compared with other developed airline markets (e.g., the US and Europe). Our estimation is based on OTP data for over 12 million Chinese flights covering the 2015–2017 period. Specifically, it is found that 10 min arrival delay of pre-segment flight within 1 hr before the departure lead to an average of 7.49 mins delay propagation for subsequent departure flight. Arrival delay of earlier pre-segments (1–2 and 2–3 hr before the departure) leads to much less delay propagation, due to longer ground buffer. Chinese airlines arrange longer ground and flight buffer than that of the US airlines to prevent the delay propagation from accumulating along the subsequent flights in a day. Thus, unlike the US market, delay propagation is not the major reason for poor OTP in China. In addition, delay propagation is less prevailing at the Chinese hub airport. This is because China has relied on point-to-point network, which does not require sophisticated schedule coordination. And the local passengers at these Chinese hub airports have higher time value such that the Chinese airlines also try to improve OTP at these hub airports to better serve these lucrative but time-sensitive local passengers. Unlike the European LCCs, Spring Airlines, the largest low-cost carrier (LCC) in China, outperforms major full-service carriers (FSCs) in controlling delay propagation. This finding may also apply to other Northeast Asian LCCs sharing common operational characteristics as Spring Airlines. Last, we find that airlines purposely tolerate moderate departure delays of up to 15 min, which is the threshold that defines delays, no matter whether the pre-segment flight arrives late or on-time. The relevant policy and managerial implications are also discussed.     

基于投入/产出效率的跨国企业承运商评价及选择

承运商的评价及选择,直接关系到供应链中跨国制造企业的运作成本,影响到企业的市场竞争力。因此,研究承运商的评价与选择方法,具有重要的理论意义和实践意义。文中提出了一种基于投入产出效率的承运商绩效评价模型,并应用该方法对某跨国制造公司承运商的评价选择进行了实例分析。     

一种低信噪比突发信号载波跟踪技术研究

为了改善低信噪比卫星下行短突发扩频信号载波跟踪时,解调性能随着信号动态增大而明显恶化的现象,提出了一种多普勒动态补偿辅助的载波跟踪算法,首先通过短时傅里叶变换(STFT)结合最小二乘拟合(LSM)算法估计信号频率及变化率,再利用估计值对原始信号进行多普勒动态补偿,最后使用三阶锁相环完成载波精确跟踪,对算法进行优化设计并进行仿真,以提高数据利用率。仿真结果表明,在接收-170 dBW灵敏度电平条件下,优化后的算法在对捕获后频偏小于200 Hz,频率变化率小于2 kHz/s的信号进行跟踪时,跟踪成功率达到99%,解调损失小于0.2 dB。新算法复杂度适中,利于工程实现,为现有接收机载波跟踪模块对低信噪比突发扩频信号进行改进提供了参考。     

美军舰载机着舰数据链的发展与启示

回顾了美国着舰引导系统及着舰数据链发展历程,分析了各着舰引导系统对信息传输需求的差异,总结了各着舰数据链的功能性能特征,描述了美国着舰数据链的发展趋势,探讨了新型着舰数据链的技术体制,最后指出了对我国着舰数据链技术及应用发展的启示。     

对高职院校职业指导载体建设的认识

随着职业教育改革的深入,职业指导工作已成为高职院校教育教学的重要组成部分,但是,"高数量、低质量"的就业现状却在一定程度上反映了职业指导工作缺乏科学性和有效性。本文主要从职业指导载体建设的含义、内容和意义三个方面阐述了对高职院校职业指导载体建设的认识,强调了应该加强管理载体、网络传媒载体、校园文化载体、活动载体的建设,从而促进高职院校职业指导工作的开展,为社会培养具有可持续发展能力的复合型人才。     

论职业生涯规划教育中的隐性德育资源开发

当前在职业生涯教育越来越受到各高校和大学生重视的背景下,高校德育工作者必须与时俱进,积极发现、善于挖掘和利用职业生涯规划中的隐性德育资源,以实现德育方法途径的多样化,推动德育工作的创新发展。     

高职校园文化载体建设的价值意义及路径探讨

高职校园文化载体承载着校园文化的内容,对师生的全面发展具有重大的价值意义。在丰富的载体内容下,高职院校可通过校史档案、校园环境、语言符号、课堂教学、管理制度、文化活动等主要的载体建设路径着手校园文化建设,从而全方位发挥出校园文化的育人价值。