The asymptotic expansion of the regular discretization error of Itô integrals

We study an Edgeworth‐type refinement of the central limit theorem for the discretization error of Itô integrals. Toward this end, we introduce a new approach, based on the anticipating Itô formula. This alternative technique allows us to compute explicitly the terms of the corresponding expansion formula. Two applications to finance are given; the asymptotics of discrete hedging error under the Black–Scholes model and the difference between continuously and discretely monitored variance swap payoffs under stochastic volatility models.     

关于改进个人银行账户分类管理问题的分析

随着互联网和移动通讯技术的发展,支付领域风险范围、扩散速度、溢出效应程几何级数增长。为有效防范网络新型违法犯罪,保护人民群众财产安全和合法权益,中国人民银行相继发布了多项制度条例,全面推进个人账户分类管理。本文结合对商业银行账户分类管理专项调查结果,分析分类管理中存在的问题及原因,在此基础上,提出进一步改进个人银行账户分类管理的措施和建议。     

价格涨跌幅机制对市场波动及换手率的影响

文章调查了价格限制机制对股票价格波动以及市场流动性的影响。首先刻画了实行价格涨跌幅限制后股票价格的变化特征,研究价格限制机制对股票价格波动的影响;随后在考虑延续冲击效应因素的基础上,通过对引入价格限制机制后投资者总成本的考察,研究了该机制对市场流动性的影响。文章结论认为,股票价格涨跌幅限制机制的引入,将增加股票市场的波动性,并且会导致投资者心理所能承受的潜在收益、损失量减小,使投资者更加频繁地买卖股票．从而增加市场换手率,进而提高整个市场的流动性。     

The core of the inductive limit of a direct system of economies with a communication structure

This paper studies direct systems of finite, that is with finitely many agents, communication structures, finite (balanced and superadditive) NTU games and finite economies. The inductive limit of such a system is again a communication structure, an NTU game or an economy, this time possibly with infinitely many agents. As a matter of fact, each infinite communication structure, each infinite NTU game and each infinite economy, is the inductive limit of a direct system of finite communication structures, finite NTU games and finite economies. A communication game is an NTU game with a communication structure on the set of players. To each economy, there corresponds a balanced and superadditive NTU game. To each economy with a communication structure on the set of agents, there corresponds a communication game. In the paper it is proved that the core of the inductive limit of a direct system of communication games is not empty and in fact the intersection of the cores of the finite communication games of the direct system. It follows that each infinite economy (with or without a communication structure on the set of agents) has a nonempty core. A direct system of economies is a generalisation of the Debreu and Scarf [Debreu, G., Scarf, H. A limit theorem on the core of an economy, International Economic Review 4, pp. 235–246.] example of `replica economies'. The proof of the nonemptiness of the core of the inductive limit of a direct system of economies is along the lines of the proof by Debreu and Scarf. As by-product it is shown that an NTU game is totally balanced if and only if all its finite subgames are balanced.     

涨跌停限制磁性效应加速特征研究——基于中国A股市场高频交易数据挖掘

本文选取中国A股市场1003只股票作为研究对象,运用二次函数模型,通过对考察期内高频数据的挖掘,从收益率和交易量两个层面,分析股票涨跌停前30分钟磁性效应的加速度、加速拐点和加速持续期三个特征。研究发现,收益率和交易量涨跌停前的磁性加速现象显著存在;犬盘股涨停前收益率的加速度与跌停前加速度对称,小盘股收益率涨停前加速度大于跌停前加速度,并且两加速度均大于大盘股;上午涨跌停收益率磁性加速度大于下午涨跌停;上涨过程交易量磁性加速度大于下跌过程;收益率的拐点和加速持续期在同一过程中与交易量的拐点和加速持续期基本一致。     

在线促销限制对消费者购买决策的影响研究——基于精细加工可能性视角

文章基于精细加工可能性理论探究了在线购物情景中不同促销限制类型（时间限制和数量限制）对消费者购买决策行为的影响。通过2（产品涉入度：高vs低）×2（限制类型：限时vs限量）的组间因子实验设计进行了实证研究,结果发现：在线促销情境下,促销限制对消费者购买决策的影响受到消费者产品涉入度的调节。当产品涉入度高时,消费者偏好时间限制促销,购买意向更高,感知控制感起了中介作用。当产品涉入度低时,偏好数量限制促销,购买意向更高,感知稀缺性起了中介作用。文章丰富了促销理论和消费者购买决策理论,同时为商家进行有效的在线促销提供了直接指导。     

基于Mathematica的中心极限定理的实验分析

基于Mathematica讨论了二项分布与正态分布之间的关系,对棣莫弗-拉普拉斯中心极限定理进行实验研究,通过图像演示和相对误差分析,给出二项分布的极限分布及其相应的准确度分析,并得出了一些计算概率的近似公式.     

杭州市工业遗产旅游发展现状剖析

旅游业的竞争和工业遗产的出现,使得工业遗产旅游逐渐成为现实与理论的热点问题。本文以杭州市所整理的工业遗产为基础,列举了杭州市工业遗产的规模,并根据开发方向和吸引力,将工业遗产分为历史功能延续类、生产旧址类和建筑成就类三种类型,阐述了杭州市发展工业遗产旅游在数量和类型方面所具备的的资源优势。结合目前的形式,分析了杭州市在潜在客源、发展经验、地理布局、节庆活动、政策支持方面的优势,以及在感知形象、价值共识、企业意识、区域竞争等方面的挑战,进而对杭州市发展工业遗产旅游提出建议。     

Optimizing order policy and credit term for items with inventory-level-dependent demand under trade credit limit

Under the combined effects of inventory-level-dependent demand (ILDD) and trade credit, the retailer is able to order more quantities to stimulate market demand. However, from the supplier's perspective, two important issues are lacking sufficient attention. First, during the credit period, the retailer's higher order quantities imply increases in both the retailer's account payable and the supplier's opportunity cost of capital. Second, given the supplier's fixed production rate, the increased market demand may drive the capacity utilization to be variable. Thus, by formulating a supplier-dominated system, this paper incorporates trade credit limit (TCL) to address its effects on optimal policies vis-à-vis the item with ILDD. Specifically, three indicators can be proposed to reveal which type of financing policy the retailer should choose. Moreover, based on TCL, the supplier can effectively manage the retailer's order quantity and the corresponding account payable. Additionally, the retailer's maximum allowable order quantity is developed to ensure that the supplier can supply the retailer's order quantity on time. Furthermore, when the effects of ILDD become more significant, the manufacturer will reduce the maximum allowable order quantity to control the retailer's order incentive.     

科技成果转化受限因素的动力机制分析及对策研究——基于"成长上限"系统基模的原理

根据“成长上限”系统基模的相关原理,采用系统动力学的建模方法,对科技成果转化的绩效评价体系、科研机构的科技成果转化体系、企业的科技成果转化体系等方面存在的受限因素进行动力机制分析。提出应创新科研成果绩效评价体系、建立利益与风险共担的科技成果转化合作机制、增强企业科技成果转化的社会支撑力度等,来优化科技成果转化的动力机制。