延迟期权在企业并购投资决策中的应用研究

针对并购投资决策具有的延迟期权特征,采用二叉树定价模型、收益贴现法和不确定规划方法建立了基于延迟期权的企业并购投资决策模型,为并购投资决策的时机选择问题提供了一种解决思路。     

5种改良剂对马铃薯挂面品质的影响研究

本文以中筋小麦粉混合马铃薯雪花全粉为研究试样,采用添加谷朊粉、葡萄糖氧化酶、沙篙胶、脂肪酶和茶多酚5种不同改良剂,通过粉质仪和物性仪的特性分析,结合感官和正交优化试验,确定了各改良剂的最适用量,探讨了其对高含量的马铃薯面团和挂面品质的影响.结果表明,5种改良剂均对马铃薯面团质构特性、蒸煮特性、粉质特性和感官有改善作用....     

石油经济大事

2日 河南首条长距离成品油管道--洛郑驻管道投入全线运行.管道起点为洛阳石化总厂,途经洛阳、郑州、许昌、漯河、驻马店等15个市区县,全长425千米.     

韩国推行绿色新政的分析与思考

全球抗疫背景下,韩国为克服严重的经济衰退,应对社会结构性转变,提出绿色新政计划和碳中和愿景目标,对我国在应对气候变化、构建现代化绿色治理体系等方面具有一定的参考意义.     

A network approach to modeling the multi-echelon spare-part inventory system with backorders and interval-valued demand

A multi-echelon inventory system implies the existence of a hierarchy of stocking locations, and the dependence and interaction between them. We consider a multi-echelon, spare-part inventory management problem with outsourcing and backordering. The problem is characterized by deterministic repair time/cost, and supply and demand that lie within prescribed intervals and that vary over time. The objective is to minimize the total inventory and transportation costs. We develop a network model for problem analysis and present a network flow algorithm for solving the problem. We prove that the Wagner-Whitin property, known for the lot-sizing problem, can be extended to the spare-part inventory management problem under study.     

THE ENDOGENEITY OF INFORMATION ASYMMETRY AND CORPORATE FINANCING DECISIONS

Firms endogenize the extent of information asymmetry by choosing the optimal level and channels of direct communication with the capital markets. Firms choose more communication when they have a greater potential demand for external financing (characterized by higher growth, less cash, and higher leverage). We demonstrate that a higher level of communication is associated with a higher probability of equity issuance. We further document that the previously observed negative market reaction to seasoned equity offering (SEO) announcements is attributed only to low‐communication firms; high‐communication SEO firms experience no significant adverse market reaction.     

Adverse Selection,Investor Experience and Security Choice in Venture Capital Finance: Evidence from Germany

This article analyses 336 German venture capital transactions from 1990 to 2005 and seeks to determine why selected financial securities differ across deals. We find that a broad array of financial instruments is used, covering straight equity, mezzanine and debt‐like securities. Based on the chosen financial securities’ upside potential and downside protection characteristics, we provide an explanation for the differing use of these securities. Our results show that investors’ deal experience, adverse selection risks and economic prospects in the public equity market influence the selection of financial securities.     

水泥水化热试验容易忽略的几个细节

文章探讨了溶解热法测定水泥水化热试验操作过程中容易忽略的一些细节,旨在减少试验误差,提高试验结果的准确性。     

THE GENERAL STRUCTURE OF OPTIMAL INVESTMENT AND CONSUMPTION WITH SMALL TRANSACTION COSTS

We investigate the general structure of optimal investment and consumption with small proportional transaction costs. For a safe asset and a risky asset with general continuous dynamics, traded with random and time‐varying but small transaction costs, we derive simple formal asymptotics for the optimal policy and welfare. These reveal the roles of the investors' preferences as well as the market and cost dynamics, and also lead to a fully dynamic model for the implied trading volume. In frictionless models that can be solved in closed form, explicit formulas for the leading‐order corrections due to small transaction costs are obtained.