Explosion in the quasi-Gaussian HJM model

We study the explosion of the solutions of the SDE in the quasi-Gaussian HJM model with a CEV-type volatility. The quasi-Gaussian HJM models are a popular approach for modeling the dynamics of the yield curve. This is due to their low-dimensional Markovian representation which simplifies their numerical implementation and simulation. We show rigorously that the short rate in these models explodes in finite time with positive probability, under certain assumptions for the model parameters, and that the explosion occurs in finite time with probability one under some stronger assumptions. We discuss the implications of these results for the pricing of the zero coupon bonds and Eurodollar futures under this model.     

SVHC第23批新增4项物质测试方法研究

本文建立了同时测定欧盟高关注物质(SVHC)第23批新增的4种物质[1-乙烯基咪唑、-甲基咪唑、4-羟基苯甲酸丁酯、双(乙酰丙酮酸)二丁基锡的气相色谱质谱联用仪(GC-MS)]的检测方法。将样品用二氯甲烷超声后,采用选择离子监控模式(SIM)进行分析样品中的待测物。实验结果表明,4种物质在50 mg/L范围内线性关系良好,线性相关系数为0.995以上;样品加标回收率为94%110%,相对标准偏差(RSD)小于7%;方法检出限分别为2 mg/kg、10mg/kg、0.8 mg/kg、0.6 mg/kg,解决了欧盟新增加的4种SVHC测试问题。     

科技型小微企业创新生态系统网络治理研究

建立一个完整、高效的创新生态系统是破解科技型小微企业创新困境、提高创新效率，以及助力新旧动能转换的有效途径。基于生态系统理论和演化动力学模型，构建科技型小微企业创新生态系统网络框架和网络联结模式，利用竞争、互利共生和捕食关系演化模型，分析演化模型的均衡点及其稳定条件。结果发现，创新生态位重叠程度决定了竞争激烈程度，系统演化均衡条件是主体间分工程度高，且嵌入适度。最后，从价值主体和机构主体两个方面〖JP〗提出推进科技型小微企业创新生态系统不断进化的治理策略。     

围绕绿色设计理念 创新人才培养模式

"绿色"、"低碳"、"环保"是近年来街头巷尾热议的话题,特别是在设计界,绿色设计成为各类设计的创意出发点。文章引入从工业化生产发展以来所进行的一系列绿色设计活动,分析绿色设计给人们当前生活带来的变化。在此基础上,探讨高校艺术教育如何培养具有绿色环保理念的未来设计师。     

The Joint Effects of Multiple Legal System Characteristics on Auditing Standards and Auditor Behavior

This paper derives the impacts of legal system characteristics and auditing standards on auditor behavior (audit quality), and analyzes the determination of optimal auditing standards under different legal regimes. Legal regimes are characterized by differences in the uncertainty concerning the outcome of legal proceedings (termed vagueness of legal systems) and differences in the average size of damage awards. Auditing standards as determined by standard setters can vary in both toughness and vagueness. Our analysis provides implications for the adoption of International Standards on Auditing (ISA). Countries, such as the United States, where auditor legal liability is significantly more onerous than the global norm are not likely to adopt ISA, since these standards may not induce auditors to provide the optimal level of audit quality. Conversely, the adoption of ISA by countries, such as China, where the legal system makes the recovery of damages from auditors quite difficult, is not by itself likely to result in a high level of audit quality. Furthermore, our model suggests that auditor rotation can help improve audit quality, but only in certain circumstances.     

基于人才共享理念的共享员工模式探析

后疫情时代下,我国企业的恢复仍面临着严峻考验,尤其是用工难问题,人力资源作为企业的重要资源凸显其重要性,在此背景下诞生的共享员工使许多企业获得一线生机.论文通过对共享员工的含义及其价值和实施风险的三维分析,结合人才共享理念提出共享员工模式,构建了"四级联动"的共享员工体系,力求促进基于人才共享理念的共享员工模式长期稳定发展.     

Accounting Standards Harmonization and Financial Integration

We empirically examine whether adopting a uniform set of accounting standards mitigates information frictions in financial markets and facilitates market integration. Using a difference‐in‐difference design, we find that after the mandatory adoption of IFRS local stock returns incorporate more global information and at a faster speed. The effect of IFRS adoption is stronger in countries where there are larger improvements in accounting comparability and for firms with a larger increase in foreign ownership. Overall, our results suggest that accounting standards harmonization facilitates financial market integration.     

Shortfall aversion

Shortfall aversion reflects the higher utility loss of spending cuts from a reference than the utility gain from similar spending increases. Inspired by Prospect Theory's loss aversion and the peak‐end rule, this paper posits a model of utility from spending scaled by past peak spending. In contrast to traditional models, which call for spending rates proportional to wealth, the optimal policy in this model implies a constant spending rate equal to the historical peak when wealth is relatively large. The spending rate increases when wealth reaches a model‐determined multiple of peak spending. In 1926–2015, shortfall‐averse spending is smooth and typically increasing.     

产权性质、企业精准扶贫行为与资本市场反应

以2015~2018年A股上市公司为研究对象，考察企业精准扶贫行为动因与方式选择及所引起的市场反应。结果发现：国有企业和政治关联民营企业精准扶贫更积极，但两者精准扶贫方式存在差异，国有企业更倾向整合型精准扶贫，政治关联民营企业则倾向慈善型精准扶贫。进一步，企业参与精准扶贫产生了积极市场反应；相较国有企业，民营企业精准扶贫产生的市场反应更积极，尤其体现在政治关联民营企业中。同时，扶贫方式及扶贫持续性对精准扶贫信息披露的市场反应有影响。     

VoIP空中交通管理系统甚高频电台网关设计

根据民航航空系统组块升级计划，网络语音（Voice over Internet Protocol，VoIP）空中交通管理系统将是未来发展趋势。在此背景下，提出了一种自主研发的支持多电台接入的VoIP电台网关的设计方案。阐述了设备功能和技术难点，以及高速硬件平台和分层软件实现方案。经过测试，网关功能指标符合标准要求，并实现了与民航现役多型语音电台的互联，为国产化VoIP空中交通管理系统的发展奠定了基础。