网络口碑营销研究进展述评

本文对CNKI和ISI数据库中167篇网络口碑营销的文献进行了研究主题和研究方法的分析。结果发现,国内在网络口碑营销的研究内容和理论深度上与国外相比存在明显的滞后。国外研究主题侧重于网络口碑与消费者行为关系、网络口碑效应以及网络口碑可信度等方面。国外以调查实证和实验研究方法为主,国内则以描述性为主。未来可以通过调查或实验方法就中性网络口碑的作用以及网络口碑作用机理等开展研究。     

THE DISTRIBUTION OF WEALTH IN URBAN CHINA AND IN CHINA AS A WHOLE IN 1995

The composition, inequality and determinants of wealth among households in urban China in 1995 are studied. In addition, we compare the wealth distribution in urban China with the wealth distribution in rural China and present the first estimates of inequality in the distribution of household wealth in China as a whole. The results show that housing wealth makes up a large part of net worth in urban China. Most urban Chinese households keep a bank account; debts are unusual. A household's net worth is strongly related to its income and location. Net worth is more unequally distributed among urban households than among rural households. However, compared to the situation in most industrialized countries, net worth in urban China and in China as a whole appear to be rather equally distributed.     

基于模糊概念的可疑金融交易量化关联规则研究

从模糊集的基本理论入手,通过定义模糊概念软化属性域的划分边界,提出了一种新的基于模糊概念的量化关联规则方法.本方法克服了因划分区间而造成数据缺失的不足.最后通过将某市2004年的实际数据运用到建立的算法中,验证算法的有效性,为有效开展可疑金融交易识别提供了有益的参考.     

The economic burden of common adverse events associated with metastatic colorectal cancer treatment in the United States

Aims: Adverse events (AEs) associated with treatments for metastatic colorectal cancer (mCRC) may compromise the course of treatment, impact quality-of-life, and increase healthcare resource utilization. This study assessed the direct healthcare costs of common AEs among mCRC patients in the US.

Methods: Adult mCRC patients treated with chemotherapy or targeted therapies were identified from administrative claims databases (2009–2014). Up to the first three mCRC treatment episodes per patient were considered and categorized as with or without the AE system/organ category during the episode. Total healthcare costs (2014 USD) were measured by treatment episode and reported on a monthly basis. Treatment episodes with the AE category were matched by treatment type and line of treatment to those without the AE category. Adjusted total cost differences were estimated by comparing costs during treatment episodes with vs without the AE category using multivariate regression models; p-values were estimated with bootstrap.

Results: A total of 4158 patients with ≥1 mCRC treatment episode were included (mean age?=?59 years; 58% male; 60% with liver and 14% with lung metastases; 2,261 [54%] with a second and 1,115 [27%] with a third episode). On average, two treatment episodes were observed per patient with an average length of 166 days per episode. Adjusted monthly total cost difference by AE category included hematologic ($1,480), respiratory ($1,253), endocrine/metabolic ($1,213), central nervous system (CNS; $1,136), and cardiovascular ($1,036; all p?Limitations: Claims do not include information on the cause of AEs, and potentially less severe AEs may not have been reported by the physician when billing the medical service. This study aimed to assess the association between costs and AEs and not the causation of AEs by treatment.

Conclusions: The most costly AEs among mCRC patients were hematologic, followed by respiratory, endocrine/metabolic, CNS, and cardiovascular.     

中国城镇职工实物收入下降的原因分析

为了解释实物收入在八十年代普遍存在而到九十年代趋于消失的现象,我们给出了两种假说:一种是改革前期消费品市场不完备,集体采购具有优势;另一种是在政府控制工资的情形下,发实物工资是企业规避工资管制的策略。利用1988、1995和1999年城镇住户调查所作的实证分析倾向于支持第二种假设。     

军民融合社会关系网络对军民融合新创企业成长的影响

军民融合新创企业是推动我国国防建设和社会经济融合发展的重要力量,军民融合社会关系网络具有丰富的异质性资源,可以有效促进军民融合新创企业成长。借鉴社会网络理论,构建以关系深度、关系广度、关系高度为代表的军民融合社会关系网络、耦合共生与军民融合新创企业成长理论模型,通过对收集的304份军民融合新创企业问卷数据进行实证分析,结果发现：军民融合社会关系网络对军民融合新创企业成长具有正向影响;耦合共生在军民融合社会关系网络与军民融合新创企业成长间发挥中介作用;创业导向显著调节耦合共生与军民融合新创企业成长的关系。     

TESTING FOR MULTIPLE BUBBLES: LIMIT THEORY OF REAL‐TIME DETECTORS

This article provides the limit theory of real‐time dating algorithms for bubble detection that were suggested in Phillips, Wu, and Yu (PWY; International Economic Review 52 [2011], 201–26) and in a companion paper by the present authors (Phillips, Shi, and Yu, 2015; PSY; International Economic Review 56 [2015a], 1099–1134. Bubbles are modeled using mildly explosive bubble episodes that are embedded within longer periods where the data evolve as a stochastic trend, thereby capturing normal market behavior as well as exuberance and collapse. Both the PWY and PSY estimates rely on recursive right‐tailed unit root tests (each with a different recursive algorithm) that may be used in real time to locate the origination and collapse dates of bubbles. Under certain explicit conditions, the moving window detector of PSY is shown to be a consistent dating algorithm even in the presence of multiple bubbles. The other algorithms are consistent detectors for bubbles early in the sample and, under stronger conditions, for subsequent bubbles in some cases. These asymptotic results and accompanying simulations guide the practical implementation of the procedures. They indicate that the PSY moving window detector is more reliable than the PWY strategy, sequential application of the PWY procedure, and the CUSUM procedure.     

社会结构、市场结构与企业技术创新

本文建立了一个基于社会结构与市场结构的技术创新系统模型,来解释企业的技术创新行为,认为企业是社会网络中的一个行动者,其技术创新行为是一种社会行动,它会受到人际关系和社会结构的影响.作为一种结果,社会结构会影响市场结构,从而两者共同作用于企业的技术创新过程.在这个过程中,对企业的社会资本分析是非常重要的.推动社会结构、市场结构与技术创新活动的协调发展是深化我国经济体制改革进而提升企业技术创新竞争力的重要途径.     

工业互联网平台对产业融合影响的实证研究

工业互联网是推进我国经济高质量发展的重要引擎,是制造业转型升级的加速器。工业互联网平台已成为一种新的经济业态和服务载体,并渗透到产业与企业各个层面,深刻影响着制造业产业融合水平。基于2013—2019年省级面板数据,运用面板分位数回归法,分析工业互联网视角下平台经济发展水平与产业融合的关系,揭示工业互联网平台发展水平对产业融合的作用机理,检验制造业升级对平台经济发展水平与产业融合的中介效应。结果表明,工业互联网平台发展对技术融合与生产性服务业和制造业融合的影响不显著,对供应链与价值链融合有显著正向影响。进一步分析发现,制造业升级在工业互联网平台对供应链与价值链融合的影响中具有完全中介效应。研究结果对揭示工业互联网平台、制造业升级和产业融合三者间关系,推动工业互联网平台赋能制造业融合发展具有重要意义。     

农村转移劳动力就业质量实证研究--基于河北省的实证分析

如何进一步提高农村转移劳动力就业质量,事关国民经济健康顺利发展,同时也是确保我国城镇化建设顺利实施的关键。通过对河北省农村转移劳动力抽样调查的结果分析,发现经济发展水平、城乡二元体制、就业市场分割、就业歧视以及劳动者素质是影响农村转移劳动力就业质量提高的原因。要想确保农村转移劳动力就业质量不断提高,就必须让政府和企业共同发挥作用,转变就业理念,完善社保体系,发挥工会作用,健全工资增长机制等,从多角度入手来提高劳动者就业质量。