基于限价指令的最优变现策略

最优变现策略是投资者指在一定时间内变现给定数量的头寸,并使其收益最大化的交易策略。以投资者最优卖价（限价单报价）高于市场实时一档买价的价差为变量,以收益最大化为目标建立随机控制模型,并采用HJB方程转换成一组常微分方程的求解,给出限价单的最优报价策略,利用蒙特卡洛模拟出限价指令策略的交易曲线。该模型同时考虑价格波动风险和未执行风险,并将买卖价差标准化后带入模型,避免了绝对价格的不同所带来的差异。     

工程项目管理中工期—成本—质量综合均衡优化研究

工期、成本、质量管理是工程项目管理的三大管理控制目标,三者具有相互作用和相互依存性。工程项目工期、成本、质量的管理对工程项目建设意义重大,在工程项目当中综合均衡三者的管理里具有重大的研究和实用价值。     

浅论紧急避险之必要限度

紧急避险的必要限度在我国刑法典中并没有明确地界定,因而在司法实践中出现了操作上的空白。本文拟比较各国学者有关此问题的不同看法,以探索适合我国国情的解释。     

关于极限教学的几点探讨

帮助学生过好极限关是高等数学教学的关键。在教学中应多用几何图形介绍概念;突出比值极限,重视无穷小量;立足常规方法;注意特殊技巧;引导学生分析、解决问题。     

Volatility,Depth, and Order Composition: Evidence from a Pure Limit Order Futures Market

This paper investigates market behaviors (such as volatility, depth, and volume) and order-flow decomposition in a pure limit order futures market, the Taiwan Futures Exchange. The results are different from those in equity markets due to relatively high adverse selection costs in futures markets. We show that a volatility (depth) increase is followed by a depth (volatility) decrease; a market order increase (decrease) subsequently induces higher (lower) volatility; and a limit order increase (decrease) results in more (less) market orders and limit orders. When the upside (downside) volatility rises, buyers decrease (increase) subsequent limit bid orders, and sellers increase (decrease) limit ask orders.     

3MZ2325CNC轴承外圈滚道数控磨床故障处理

以3MZ2325CNC圆锥滚子轴承外圈滚道凸度数控磨床为例,描述了西门子802dsl数控系统出现故障的处理方法、步骤和注意事项。     

企业内部控制存在的问题及对策

在资讯产业已经发达的当今社会,不断完善企业内部控制制度,对于防范舞弊,减少损失,提高资本的再生能力具有积极的意义。我国企业内部控制制度普遍薄弱,本文试图从我国内部控制的现状及其存在的问题入手提出解决的对策。     

“Unfunded liabilities” and uncertain fiscal financing

A rational expectations framework is developed to study the consequences of alternative means to resolve the “unfunded liabilities” problem—unsustainable exponential growth in federal Social Security, Medicare, and Medicaid spending with no plan to finance it. Resolution requires specifying a probability distribution for how and when monetary and fiscal policies will change as the economy evolves through the 21st century. Beliefs based on that distribution determine the existence of and the nature of equilibrium. We consider policies that in expectation combine reaching a fiscal limit, some distorting taxation, modest inflation, and some reneging on the government's promised transfers. In the equilibrium, inflation-targeting monetary policy cannot successfully anchor expected inflation. Expectational effects are always present, but need not have a large impacts on inflation and interest rates in the short and medium runs.     

基于安全系数对某软土滑坡成因分析

以舟山某海滩滑坡为背景,通过现场调查、地质勘察及相关的理论分析,发现填荷载作用下产生两类滑坡形式包括牵引式和剪切型两种;滑坡前后土层力学性能指标发生改变,特别是滑动区域土层粘聚力明显下降;极限平衡法提示出未进行堆载预压处理时必将发生失稳,失稳后必须采用抗滑桩才能保证堆填荷载作用边坡的安全。     

震后某电厂后山斜坡危岩体稳定性研究

通过详细地质勘察和计算,研究了该斜坡危岩带的基本地质特征、成因机制及变形破坏机制,通过室内实验得到岩土体的力学参数,利用极限平衡方法对该斜坡危岩体的稳定性进行了计算分析,并简要说明了斜坡危岩带的发展趋势及其危害性,供类似工程参考。