泛逻辑的基本形式演绎系统UL及其可靠性

1 引言自Zadeh于1965年建立模糊集理论以后,一种初始形态的模糊逻辑也被提出。尽管模糊推理在模糊控制中有直接的应用,也受到模糊系统与人工智能学界的广泛关注,但是,由于模糊推理长期以来没有严格的逻辑基础,致使其进一步发展受到限制,且不可避免地受到怀疑与批判。不过,近年来,以王国俊教授为首的一批学者成功地将模糊逻辑和模糊推理结合起来,通过建立模糊逻辑的形式演绎系统、创建模糊推理的三I算法等一系列漂亮的工作,极大地推动了这一领域向理论和应用的纵深发展。     

AMC不良资产评估的会计处理思考

在金融资产管理公司(简称AMC)运用各种手段处置不良资产的过程中,评估发挥着指导处置价格、监督处置行为、衡量处置效果等至关重要的作用。对于不良资产评估的会计处理,我国相关AMC财务会计制度作了具体的规定,但其中也存在一定的问题。     

High-accuracy finite-difference methods for the valuation of options

A finite-difference scheme often employed for the valuation of options from the Black–Scholes equation is the Crank–Nicolson (CN) scheme. The CN scheme is second order in both time and asset. For a rapid valuation with a reasonable resolution of the option price curve, it requires extremely small steps in both time and asset. In this paper, we present high-accuracy finite-difference methods for the Black–Scholes equation in which we employ the fourth-order L-stable Simpson-type (LSIMP) time integration schemes developed earlier and the well-known Numerov method for discretization in the asset direction. The resulting schemes, called LSIMP–NUM, are fourth order in both time and asset. The LSIMP–NUM schemes obtained can provide a rapid, stable and accurate resolution of option prices, allowing for relatively large steps in both time and asset. We compare the computational efficiency of the LSIMP–NUM schemes with the CN and Douglas schemes by considering valuation of European options and American options via the linear complementarity approach.     

论清单计价模式安装工程造价从业人员的能力构建

工程量清单计价是一种主要由市场定价的计价模式,与传统定额计价模式既有联系,又有本质区别。清单计价的特点要求安装工程造价从业人员不仅要提高技术业务能力,还应有会管理、懂经济、懂法律等能力。     

城市河湖湿地景观价值评估方法研究

城市河湖湿地作为城市社会经济发展的重要资源已越来越被社会广泛重视。通过对城市河湖湿地景观价值的分析,构建了适应城市河湖湿地景观价值的评价体系,并利用意愿价值评估法和旅行费用法等方法实现对评价体系的指标量化,用价值工程理论来综合衡量工程景观价值的功效,为开展城市河湖湿地改造的投资决策提供经济评价支持。最后结合实例介绍了该方法的具体应用。     

Relative importance of price in forming individuals’ decisions toward sustainable food: A calibrated auction-conjoint experiment

This paper explores the importance of pricing information in dealing with sustainable food preferences. It employs the Calibrated Auction-Conjoint Valuation Method (CACM), by comparing non-adjusted values from a self-explicated (hypothetical) conjoint method to the final calibrated values entered into an adjusted (real) auction. We found consumers significantly reduced their WTP when moving from the initial stage of the CACM (hypothetical self-explicated conjoint method) to the final stage (real auction), primarily by placing more importance on product prices, implying that WTP values from a self-explicated conjoint method used alone would likely lead to overstated estimates of WTP.     

08版工程量清单计价规范：改进与分析

分析2008版《建设工程工程量清单计价规范》在03版基础上的突出改进之处,认为08版的改进内容对规范工程招投标、发承包行为,减少工程结算中的争议,明确和主动控制风险等都有积极意义。     

概算清单计价法应用及操作流程

应用计价软件,采用清单组价的模式编制概算,解决概算编制模板化的问题,提高编制效率,构建起概算与清单沟通的桥梁,推进全过程造价管理。     

有关工程造价和投资控制等概念使用问题严谨性分析

 文章对建设项目投资涉及到的投资控制、工程造价、工程计价等几个概念,分别从实施阶段、实施主体、实施依据和目的等方面进行了分析与讨论,指出了它们之间的区别与联系,并对几个概念在相关教材中的使用提出了建议。