Limit theorems for reflected Ornstein–Uhlenbeck processes

This paper studies one‐dimensional Ornstein–Uhlenbeck (OU) processes, with the distinguishing feature that they are reflected on a single boundary (put at level 0) or two boundaries (put at levels 0 and d > 0). In the literature, they are referred to as reflected OU (ROU) and doubly reflected OU (DROU), respectively. For both cases, we explicitly determine the decay rates of the (transient) probability to reach a given extreme level. The methodology relies on sample‐path large deviations, so that we also identify the associated most likely paths. For DROU, we also consider the ‘idleness process’ L_t and the ‘loss process’ U_t, which are the minimal non‐decreasing processes, which make the OU process remain ≥ 0 and ≤ d, respectively. We derive central limit theorems (CLTs) for U_t and L_t, using techniques from stochastic integration and the martingale CLT.     

口岸核心能力信息管理系统设计与应用研究

新版国际卫生条例对口岸核心能力提出了更高更新的要求,并且口岸核心能力建设是一个持续的过程,为更好的维持并不断提升口岸核心能力,确保管理部门及时准确掌握口岸核心能力的即时状况和动态变化,基于"全面掌握、即时分析、科学决策"的理念,设计开发了口岸核心能力建设信息化管理系统,从而提升口岸核心能力建设管理的科学性和有效性。     

Securities regulation and implicit penalties

The extant literature offers extensive support for the significant role played by institutions in financial markets, but implicit regulation and monitoring have yet to be examined. This study fills this void in the literature by employing unique Chinese datasets to explore the implicit regulation and penalties imposed by the Chinese government in regulating the initial public offering (IPO) market. Of particular interest are the economic consequences of underwriting IPO deals for client firms that violate regulatory rules in China’s capital market. We provide evidence to show that the associated underwriters’ reputations are impaired and their market share declines. We further explore whether such negative consequences result from a market disciplinary mechanism or a penalty imposed by the government. To analyze the possibility of a market disciplinary mechanism at work, we investigate (1) the market reaction to other client firms whose IPO deals were underwritten by underwriters associated with a violation at the time the violation was publicly disclosed and (2) the under-pricing of IPO deals undertaken by these underwriters after such disclosure. To analyze whether the government imposes an implicit penalty, we examine the application processing time for future IPO deals underwritten by the associated underwriters and find it to be significantly longer than for IPO deals underwritten by other underwriters. Overall, there is little evidence to suggest that the market penalizes underwriters for the rule-violating behavior of their client firms in China. Instead, the Chinese government implicitly penalizes them by imposing more stringent criteria on and lengthening the processing time of the IPO deals they subsequently underwrite.     

水下桩头处理钢围堰设计与施工

介绍某船台滑道工程冲孔灌注桩在桩头处理、桩扩大头及榫头施工中,采用钢围堰围护创造干式施工的设计计算与施工工艺。     

上海市企业专利质押贷款发展现状的实证分析

专利质押贷款为解决科技型中小企业融资难的问题提供了一条有效途径。在政府的积极参与和相关政策的激励下,上海市企业专利质押贷款多年来保持持续和快速发展。本文基于国家知识产权局公布的2008—2012年专利质押合同登记信息,从专利、出质人和质权人等角度对上海市企业专利质押贷款发展的现状和趋势进行实证分析,总结了上海市企业专利质押贷款的发展特征和经验启示。     

校企合作共建社会体育专业（赛马产业管理方向）实训基地的实践研究

实训基地建设是教育培养技能型人才必不可少的一个环节,该文分析了校企合作共建社会体育专业（赛马产业管理方向）实训基地的具体措施及取得的成效,提出了进一步建设的建议。     

我国长三角地区内资医药企业人力成本管理现状分析

本文从人力资源管理的角度,通过阐述长三角地区内资医药企业人力成本管理现状及问题,对于如何对于该地区人力成本管理进行了探讨,并提出相应的对策。     

数据变革、数据理论与数据治理: 一个简要述评

本文阐述和探究了数字时代下的数据变革趋势及国家支持政策、数据经济理论和数据治理的基本问题.首先,促进数据要素的运用与发展已经成为全球共识.其次,基于不同假定和市场情境,学术界对搜集与使用用户数据问题的理论研究在数据共享的效率影响方面得出了不同结论:当消费者是否理性、是否拥有信息优势的假定不同时,数据优势是否会被滥用、数据共享是否会提升效率的研究结论完全相反;在数据技术、数据交易、数据支付等不同市场情境中,会出现多种福利结果,如效率提升、市场失灵、服务提供者可能滥用数据信息优势等.最后,学术界对于数据治理方面的研究主要围绕数据产权的界定与分配、数据集中及数据(和算法)伦理责任等三个方面展开.数据产权界定和分配主要依据数据分类分级原则对初始数据进行判定;数据集中主要从可触达性或可及性而非产权角度、从数据产业价值链条的角度来审视;数据(和算法)伦理责任包括可解释、可问责、透明、正义与中立等方面的义务.本文的探究和梳理有助于深化对数据的认识和治理.     

房价上涨会影响居民社会地位的主观评价吗?

构建模型阐释房价变动对主观地位评价的影响,并基于2010-2016年中国家庭追踪调查面板数据,使用面板有序Probit模型分析房价上涨的影响路径.结果表明:高房价会导致居民主观地位评价下降,且对于男性、农户和城镇居民的影响更强;婚姻匹配和相对消费都是房价影响主观地位评价的重要渠道.     

一种改进的CPFSK信号频率估计方法

针对突发信号解调中多普勒频偏大的问题，提出了一种改进的连续相位移频键控信号(CPFSK)频率估计方法。首先接收信号平方运算使信号的调制指数加倍，再通过一次离散傅里叶变换(DFT)，用搜索信号平方谱谱峰的方法实现突发信号频率估计。仿真实验表明，在低信噪比条件下，该算法的频率估计精度比经典的相位差频率估计算法提高了20%；该算法与广泛用于高动态突发信号的频率插值估计算法相比，同道干扰信道下信干比改善可达4 dB，DFT长度缩短约1/3。