基于遗传算法的核函数参数优化

核主分量分析是一种输入输出特征非线性变换技术。选择最优或接近最优的非线性变换核函数参数,使类的可分性测度最大,是KPCA应用于特征提取的关键。本文采用高斯变异遗传算法作优化技术,实现了KPCA和GA的集成,适合核函数参数的优化选择。仿真表明,该技术可行、有效。     

缩小城乡居民收入差距的财政思考

缩小城乡居民收入差距的关键在于提高农村居民的收入增长速度。要实现农村居民收入的较快增长,必须通过一定财政政策的支持,积极发展农业经济,改善农业经济结构,提高农业经济质量,增强农业的竞争力。通过农村税费改革,切实减轻农民负担。加快农村剩余劳动力从农业生产领域向非农产业领域的转移、从农业劳动力过剩地区向劳动力短缺地区转移,藉以提高农业劳动生产率,增加农民收入。     

Clawbacks,Holdbacks, and CEO Contracting

“Clawbacks” are much discussed in the context of senior executive compensation, yet the discussion has largely ignored the presence of holdbacks that are already in place in many firms. Holdbacks are deferred compensation that is potentially foregone in the event that the CEO leaves the firm without good reason or they are dismissed for wrong‐doing. They are explicit or written features of a CEOs employment contract. Holdbacks are already in use at 70% of S&P 500 firms and average $18.4 million each. Firms with higher CEO replacement costs, greater information asymmetry, a recent bad experience (fraud, lawsuit, or restatement), or in more certain environments are more likely to have a holdback. In contrast, clawback adoptions are mainly driven by firms' bad experiences and external pressure from shareholders. Holdbacks and incentive‐based compensation are substitutes, as termination incentives can reduce the need for incentive compensation. As managers reasonably demand a premium for accepting risky compensation, a measure of abnormal compensation is positively associated with holdbacks, but there is no significant association between clawbacks and holdbacks. These findings suggest that the holdbacks many firms already have in place could help an “ex‐post settling up” in the event of financial misconduct, or even simply misstated financials. As companies have more control over the amounts held back ex‐ante, holdbacks are potentially more efficient.     

21世纪桂林旅游业发展问题研讨

为使桂林旅游业在２１世纪能够有大的作为,并在激烈竞争的国际旅游市场上立于不败之地,针对桂林市旅游业现存的问题,就桂林旅游企业改革、城市定位、旅游法制建设、旅游产品开发、旅游意识建设５个方面进行了较为深入的探讨     

论中小股东权益之法律保护

中小投资者是证券市场发展的根本。但由于大股东在公司中的地位,使得中小股东权益一直没有得到充分的尊重和保护。文章从中小股东权益保护必要性分析入手,立足我国中小股东权益保护的现状分析,着重论述完善中小股东权益保护机制的建议和意见。     

加入WTO我国商业银行面临的挑战及对策

本根据当前国际金融形势的基本特征，即金融全球化、金融自由化、金融市场化、金融网络化及金融脆弱化，分析了加入WTO后我国商业银行面临的挑战，并就国内商业银行存在的主要问题，中外资银行竞争的焦点，以及我国商业银行的对策提出了有针对性的措施和建议。     

我国纺织品遭遇特保的影响与策略

文章分析了与我国纺织品有关特保措施的特征,深入揭示了纺织品遭受特保的负面影响,并着重从纺织业自身角度探究了针对纺织品特保措施的应对策略。     

A DC programming heuristic applied to the logistics network design problem

This paper proposes a new heuristic method for the logistics network design and planning problem based on linear relaxation and DC (difference of convex functions) programming. We consider a multi-period, multi-echelon, multi-commodity and multi-product problem defined as a large scale mixed integer linear programming (MILP) model. The method is experimented on data sets of various size. The numerical results validate the efficiency of the heuristic for instances with up to several dozens facilities, 18 products and 270 retailers.     

一种由单片机构成的心率测量电路

用单片机系统采集、处理患者的心率、血压等生命体征参数比其他测量方式更加准确、可靠；也能方便地与计算机系统组成高度智能化的监护仪器。本文介绍一种由单片机构成的心率测量电路。     

中国股票市场非线性特征检验分析

本文突破了传统资本市场理论研究的线性框架,视股票市场为一非线性系统,运用R/S、BDS等非线性方法对沪深股票市场进行实证研究,得出了沪深两市的非线性特征,并探讨了这些实证结果对股票市场研究的理论与实践意义。