Big Data Usage in the Marketing Information System

Data generation, storage capacity, processing power and analytical capacity increase had created a technological phenomenon named big data that could create big impact in research and development. In the marketing field, the use of big data in research can represent a deep dive in consumer understanding. This essay discusses the big data uses in the marketing information system and its contribution for decision-making. It presents a revision of main concepts, the new possibilities of use and a reflection about its limitations.

Credit Rationing in Medium-small Enterprises Credit Market under Asymmetric Information

Credit rationing has been an objective phenomenon in medium-small enterprises credit market of China. By analyzing the present situation of medium-small enterprises credit market of China, this study gives a new credit rationing model fitting medium-small enterprises credit market of China well. It has been showed in the empirical study that different factor has each different influence on medium-small enterprises credit market; further more, only the change of chastisement factor can make the medium-small enterprises credit market achieve whole success, but other factors can merely get integrant success even though under the most ideal condition.

A Study on Influence of Market Information on Clothing Enterprises and Countermeasures

Due to quick changes of the market and long supply chain, it is difficult for clothing enterprises to make timely and correct production adjustment. According China＇ s data, research of this paper indicates that the correctness of clothing enterprises adjustment is only about 43%. Some positive actions can improve the condition, such as set up the quick feedback way of the market information, improve information sharing by cooperation mechanism of upstream and downstream in the industry or cross industry, and strengthen the regulatory mechanism of production.

Does Margin Trading Enhance Information Efficiency of the Capital Market?——Evidence from China

On March 31,2010,China formally introduced a margin trading system,which announced that China's capital market has completed the transformation from a unilateral transaction model to a bilateral transaction model with a short-selling mechanism.However,the current development of China's margin trading and securities lending businesses is seriously unbalanced,and the scale of financing far exceeds the scale of securities lending.The short selling effect of securities lending exchanges is extremely limited,which to some extent violates the original intention of introducing the system.In order to help margin trading and securities lending to correct a healthy and sustainable development path,this article uses stock price synchronicity as a proxy indicator to measure the information efficiency of the capital market,explores the impact of the margin trading system on the information efficiency of the capital market,and study the detailed characteristics and economic consequences of the margin trading system.Aiming at this topic,this article analyzes the relationship between margin financing and securities lending and stock price synchronicity.Finally,it analyzes the influence of margin financing and securities lending system on stock price synchronicity from three dimensions of corporate governance,external supervision,and institutional environment mechanism.In terms of empirical research,this article takes advantage of the“quasi-natural experiment”provided by the gradual opening of margin trading and securities lending in China’s securities market,and selects listed companies on the Shanghai and Shenzhen stock exchanges from 2007 to 2019 as the research objects,starting from the perspective of stock price synchronicity,and passing The DID-FE model studies the impact of the margin trading and securities lending system on the information efficiency of the capital market.It uses three methods:parallel trend and dynamic testing,PSM-DID analysis,and placebo testing for robustness testing to solve the endogeneity problem of the experiment.This article also conducts deeper research on the subject based on the two dimensions of the impact mechanism of margin financing and securities lending and the size of the company,and finally discusses the economic impact of margin financing and securities lending on the level of company innovation.

信息市场中垄断行为和不正当竞争行为的表象及其法律特征——兼析美国政府诉讼微软案

The paper analyzes the monopoly and illegal competition actions in the information market.Their phenomena and characteristics in law are described.

Reliability-based congestion pricing model under endogenous equilibrated market penetration and compliance rate of ATIS

A reliability-based stochastic system optimum congestion pricing(SSOCP) model with endogenous market penetration and compliance rate in an advanced traveler information systems(ATIS) environment was proposed. All travelers were divided into two classes. The first guided travelers were referred to as the equipped travelers who follow ATIS advice, while the second unguided travelers were referred to as the unequipped travelers and the equipped travelers who do not follow the ATIS advice(also referred to as non-complied travelers). Travelers were assumed to take travel time, congestion pricing, and travel time reliability into account when making travel route choice decisions. In order to arrive at on time, travelers needed to allow for a safety margin to their trip.The market penetration of ATIS was determined by a continuous increasing function of the information benefit, and the ATIS compliance rate of equipped travelers was given as the probability of the actually experienced travel costs of guided travelers less than or equal to those of unguided travelers. The analysis results could enhance our understanding of the effect of travel demand level and travel time reliability confidence level on the ATIS market penetration and compliance rate; and the effect of travel time perception variation of guided and unguided travelers on the mean travel cost savings(MTCS) of the equipped travelers, the ATIS market penetration, compliance rate, and the total network effective travel time(TNETT).

An Empirical Analysis of the Efficient Market Hypothesis in China's Stock Market

The efficient market hypothesis is one of the most important theories in finance.According to this hypothesis,in a stock market with sound laws,good functions,high transparencies,and extensive competitions,all valuable information is timely,accurately,and fully reflected in the trend of stock prices including the current and future values of enterprises.Unless there are market manipulations,it would be impossible for investors to gain more above the average profits in the market by analyzing former prices.Since the efficient market hypothesis has been introduced,it has become an interest in the empirical research of the security market.It is one of the most controversial investment theories and there are many evidences supporting and also opposing this hypothesis.Nevertheless,this hypothesis still holds an important status in the basic framework of mainstream theories in modem financial markets.By analyzing simulated investment transactions in regard to stock trading of three different enterprises,this paper verified that the efficient market hypothesis is partially valid.

The Reasolis Why Informal Finance Exists and Some Suggestions on Policy

Compared with formal finance, informal finance owns advantages in information and collateral. These are the reasons why informal finance exists widely in many ways. However, informal finance has its deficiencies too. On the basis of the analysis of the advantages and deficiencies of informal finance, the paper also offers some suggestions on policy that government should adopt on informal finance.

The Chinese Stock Markets on Trial： The Fat Finger Accident of Everbright Securities

Everbright Securities Ltd. erroneously submitted huge quantities of buy orders on SSE180 constituent stocks from 11：05 through 11：07 on 16 August 2013. This fat finger accident had a pronounced impact on the Chinese stock markets. This paper uses the accident to study market quality and investors＇ responses. We show that the Chinese stock markets were robust enough to stand the trial, exhibiting deep depths and strong resiliency. However, the markets performed poorly in terms of aggregating information because there were large price swings after the erroneous orders were executed. Moreover, investors quickly change their beliefs as to the reasons to the dramatic price jumps, consistent with information cascade theory.