Marr小波变换像空间的描述

对Marr小波变换的像空间给出了其再生核函数的具体表达式和等距恒等式.并利用再生核的结构对Marr小波变换的像空间作了一般和具体的描述,这为一般的小波变换像空间的讨论提供了理论基础.     

中新两国高校制造工程类专业的比较与启迪

新加坡高校在制造工程类专业建设与发展方面拥有很多成功经验。通过对中新两国在该专业领域的比较研究,指出了在课程结构、教学组织、主修辅修、学位等级等方面的不同之处。探讨这些不同之处带给我们的启迪,提出值得借鉴的新经验。     

Study on Sustainable Development Capability of Shandong Province

Based on the indicator system of Sustainable Development(SD), Shandong Province was selected as an example for assessment with AHP method and the standard year was 1978. The conclusion was that Shandong Province’s ability of SD was being strengthened step by step, and there were also some restrictive factors, and according to the basic conditions of Shandong Province, countermeasures and strategy of SD were put forward.     

Demand estimation and assortment planning in wireless communications

This paper provides an efficient and useful approach for demand estimation and assortment planning of cell phone cards in wireless communication industry. We use maximum likelihood estimation to estimate the primary demand and substitution probability of each cell phone card based on historical sales data. This estimation model is nonlinear, so we transform it to a mixed integer linear programming model by logarithmic transformations and piecewise linear approximation. On the basis of the estimation results, we can make assortment planning. Considering the resource of cell phone cards is limited, we jointly optimize the assortment and quantity planning of cell phone cards. In numerical study, we apply our approach to a large mobile service provider in China and find our approach can increase the revenue of this mobile service provider by 23.69%. Sensitivity analysis shows the mobile service provider should provide more assortments to increase revenue when the types of cell phone cards that can be assigned to each store are limited.     

试论旅游与文物保护的关系

文章通过对文物与旅游之间重要性的阐述,对文物保护提出了几点建设性的建议.     

二元复合体系稳定性室内研究

针对二元复合体系黏度及界面张力稳定性开展室内实验研究,实验结果表明:2 500万分子量聚合物和3 500万分子量聚合物,在前7天黏度均降低较快,15天之后体系黏度渐趋稳定,但是后者抗老化能力明显比前者强;体系界面张力值随时间变化呈现出先降低,然后再升高,逐渐平稳的趋势,15天之后体系界面张力渐趋稳定;老化时间和表活剂浓度一定时,聚合物浓度越高,体系黏度越大,体系的界面张力越大;当老化时间和聚合物浓度一定时,二元体系表面活性剂浓度增大黏度略微增大,界面张力值随表面活性剂浓度增加而降低。     

云南轮藻植物研究

云南共有轮藻植物５属４８种（包括变种和变型）．在种类组成中，丽藻属最多，轮藻属次之，其它３属的种类较少分布特点具有热带、亚热带性质；区系属于印度一马来西亚，但鸟巢藻属、拟丽藻属、松藻属的地理分布带有地中海沿岸区系的成分。云南轮藻某些种类在形态上存在的差异显示了系统发育的间断性，同时，它们在形态上所具有的一些共同点，反映了在其进化过程中的连续性．     

Coordination game model of co-opetition relationship on cluster supply chains

The research of cluster supply chains is a new direction and a hotspot of the industrial cluster theory. On the condition of the coordination game, the enterprises may be stuck on the non-efficient equilibrium status, which becomes an important problem that must be considered on cluster supply chains. A symmetrical coordination game model is constituted to describe the competition and cooperation relationship of the same-quality manufacturers on cluster supply chains. The methods of the non-cooperation game theory and the evolutionary game theory are respectively used to analyze the model, whose parameters＇ influences under each method are then compared. It can be concluded that the analysis of the evolutionary game theory is more realistic and practical. Finally, three approaches are considered to break away from being path-dependence locked-in non-efficient status during this coordination game evolutionary process, which provide the development of cluster supply chains with an effective forecasting and Pareto optimizing method.