缝翼尾缘预弯曲设计

缝翼尾缘受气动力作用,尾缘与固定前缘蒙皮缝道间隙过大,影响气动性能。文章创新设计预弯曲尾缘,装配时产生向下回复力,抵消部分气动力,减小缝道间隙。依据缝翼翼面刚度、气动载荷,采用有限元计算尾缘预弯后的回复力、缝道间隙,考虑缝翼收放时的摩擦阻力和安装装配工艺,设计预弯曲变形的缝翼尾缘。     

A New Comprehensive Patent Analysis Approach for New Product Design in Mechanical Engineering

This study proposes a five-phase procedure for a new product design process. Based on the concept of “focus first, then extend”, this study presents a new approach called the New Comprehensive Patent Analysis model (NCPA) which combines the patent family with patent citation analysis in a new product design process. The procedure includes the following features: (1) integrating the perspective of management-based and technology-based design for patent searching, (2) building a patent family based on industry basic patents, (3) filtering the patent family to obtain key patents, (4) utilizing patent citations to gain necessary technology information in product development design, and (5) combining TRIZ theory to construct patent technology performance maps, and to discover product niches. This NCPA model is empirically applied in a real case. The results show that the NCPA improves the overall efficiency of new product designs, but also involves higher cost than other approaches.     

制造业企业业务流程数字化与企业价值：基于动态能力的视角

本文从数字化转型的核心——业务流程数字化的视角,采用2007-2021年沪深A股上市公司制造业企业数据,基于动态能力理论来探索业务流程数字化对企业价值的影响及其作用机制。研究发现：采购和供应数字化、生产数字化和销售数字化对企业价值有显著的正向影响,通过工具变量法缓解内生性问题后结果依然显著。这种影响主要通过生产效率、吸收能力和创新能力的路径发挥作用。适应能力路径发挥了遮掩效应,部分原因在于适应能力对企业价值的二次非线性关系,以及企业资产规模对两者的负向调节作用。进一步分析发现,在业务流程数字化中,生产数字化通过生产效率提升企业价值的作用最小,通过技术创新提升企业价值的作用最大。这一结论不仅深化和拓展数字化转型理论基础,而且对制造企业实施数字化转型提供理论参考。     

协调的代理模块模型的构造

介绍了供应链和集成供应链管理系统，为解决集成供应链管理系统的协调问题，给出了代理模块的概念，提出代理模块模型的结构并讨论了相关的协调问题和供应链中代理模块的集成方式问题。     

四川旅游产业竞争力的比较分析

改革开放20多年来,四川旅游业取得了相当大的发展,经历了从无到有,从有到发展壮大的过程。2002年,四川省接待入境旅游者66.72万人次,创汇收入首次突破2亿美元,达到2.0021亿美元。国内游客达7217.97万人次,实现国内旅游总收入363.62亿元。全省旅游总收入380.2亿元,相当于全省GDP     

国外盈余管理理论的研究:发现与启示

多年来西方学术界对盈余管理进行了持续的研究,形成很多研究成果,但大多仍然是从会计学的角度考察。本文对当前的各种观点进行了综述,结合管理学的思想,提出现在盈余管理的理论和实务都不再仅仅是会计学的问题,应该拓展为从管理学的角度来研究,并对此展开了讨论。     

STOCK PRICE VOLATILITY,NEGATIVE AUTOCORRELATION AND THE CONSUMPTION–WEALTH RATIO: THE CASE OF CONSTANT FUNDAMENTALS

Based on infinite horizon models, previous theoretical works show that the empirical stock price movement is not justified by the changes in dividends. The present paper provides a simple overlapping generations model with constant fundamentals in which the stock price displays volatility and negative autocorrelation even without changes in dividend. The horizon of the agents matters. In addition, as in recent empirical works, the aggregate consumption–wealth ratio ‘predicts’ the asset return. Thus, this framework may be useful in understanding different stylized facts in asset pricing. Directions for future research are also discussed.     

关于高校思想政治教育实效性的反思

我国高校思想政治教育有实效也存在一定问题，就影响高校思想政治教育的影响因素进行分析，并提出进一步加强高校思想政治教育时效性的几条主要建议与对策。     

Performance-vested stock options and interest alignment

This paper investigates the effects of performance-vested stock options (PVSOs) in aligning management interests and shareholder wealth. Using 4238 executive-level observations for 1383 executive directors from the largest 244 UK non-financial firms over the 1999–2004 period, we find that the use of PVSO schemes in executive compensation contracts is associated with greater interest alignment. The evidence also shows that PVSOs outperform traditional stock options (TSOs) in providing incentives. Moreover, the results suggest that difficult vesting targets negatively affect managers' choice of effort, resulting in the divergence of managers' and shareholders' interests.     

改革开放以来我国经济宏观调控述评

改革开放以来,在我国经济发展过程中存在着起伏波动,有时还十分剧烈.既有经济增长过热并导致通货膨胀,也有经济增长低迷而物价负增长.对此国家针对当时的具体情况进行了多次调控,保证了我国经济的稳定快速增长、物价的基本稳定.