Product selection for promotion planning

This paper addresses a very important question—how to select the right products to promote in order to maximize promotional benefit. We set up a framework to incorporate promotion decisions into the data-mining process, formulate the profit maximization problem as an optimization problem, and propose a heuristic search solution to discover the right products to promote. Moreover, we are able to get access to real supermarket data and apply our solution to help achieve higher profits. Our experimental results on both synthetic data and real supermarket data demonstrate that our framework and method are highly effective and can potentially bring huge profit gains to a marketing campaign.     

古琉璃与现代玻璃艺术的继承与创新——从中国玻璃艺术史的角度谈

论文首先对中国古玻璃①艺术形式进行分析,从宏观上对中国古代玻璃技术的发展进行整体阐述,指出古代中国的玻璃行业发展缓慢的原因和现代玻璃艺术的出现与大发展。本文着重于从玻璃艺术工艺入手,解析历史中的工艺形态、技术应用现象,结合其工艺自身的特点和艺术的形式规律,对传统工艺的再开发,挖掘其潜力为今天服务。现代的工艺形式是基于古老的传统技术手法之上的,是传统工艺的延续和变革。     

Combining genetic approach and integer programming to solve multi-facility economic lot-scheduling problem

Economic lot-scheduling problem (ELSP) has been studied since the 1950??s. ELSP deals with the scheduling of the production of several items on a single facility in a cyclical pattern. The facility can only produce one single item at a time, and there is a set-up cost and set-up time associated with each item. Because of the rapid development of many emerging markets nowadays, many common items are produced in different places in order to satisfy the demands in different markets. This becomes the multi-facilities ELSP problems. In ELSP problems, it is known that if more items types to be produced by the facility, the production frequency of each item type will increase because of the balancing of the production rate and the demand rate. Consequently, the number of set-up time and set-up cost increases accordingly. Thus, reallocating the common items, which can be produced in any facilities, to be produced only on certain facility can certainly reduce the number of production frequency, and lead to lower related costs. The objective of this paper is to propose an optimization methodology combining Integer Programming and Genetic Algorithm to solve multi-facility ELSP problems. This paper proposes to divide the main problem into a master problem and sub-problems, which are solved by Integer Programming and Genetic Algorithm respectively. To demonstrate the significance of reallocating the common items and aggregating them to produce in certain facility, several models have been designed and tested. The comparison of the models demonstrates the reduction of the costs benefited by result of common items reallocation.     

IPTV中组播技术的解决方案

文中介绍了IPTV业务的概念,分析了实现IPTV业务的播技术,并讨论了将组播隧道技术和应用层组播技术应用到IPTV中的解决方案.     

探索心理健康教育的有效途径提高大学生心理素质

2001年教育部颁布的<关于加强普通高等学校大学生心理健康教育工作的意见>和2002年颁布的<普通高等学校大学生心理健康教育工作实施纲要(试行)>,开创了高校心理健康教育工作的新局面.     

PID控制技术在砌块养护窑中的应用

本文介绍了一种利用S7-200型PLC的PID控制技术来实现砌块养护窑的自动控制系统，详细介绍了系统的硬件配置以及软件设计流程图，并根据模拟实验的编程经验．介绍了编程中的关键问题。     

预浸水法消除大厚度自重湿陷性黄土地基研究

为了在大厚度自重湿陷性场地建筑水利工程，基本消除黄土的湿陷性，通过在宁夏固海扩灌十一泵站场地进行预浸水的试验研究，观测了湿陷量与浸水时间关系、耗水量与浸水时间关系、场地变形量，以及处理效果检测与评价，得出大厚度自重湿陷性黄土场地经过一定的预浸水后，黄土自重湿陷量全部消除．地基呈中压缩性，承栽力特征值为150kPa的结论．为同类工程建设提供可以借鉴的经验．     

Oxidation behaviour of the near α-titanium alloy IMI 834

Oxidation behaviour of the near α-titanium alloy IMI 834 was investigated over a range of temperatures, from 600–800°C, in air. Specimens were solution-treated in the α + β and β phase fields for 1 h and 1/2 h, respectively and cooled in air to room temperature. The solution treated samples were subjected to stabilization treatment at 700°C for 2 h, followed by cooling in air. Oxidation behaviour of these samples was studied from 600–800°C in air, for 50 h. The morphology of the scales formed was examined by SEM and the phases present in the scales were characterized by X-ray diffraction. While there was little oxidation at 600°C, the rate of oxidation increased at higher temperatures. In general, the rate of oxidation was found to be more in the α + β treated condition than that in the β treated one. The results are discussed in terms of the characteristics of the oxide film formed under different conditions.     

三聚氯氰在活性单体及聚合物合成中的应用研究进展

本文综述了以三聚氯氰为原料，合成含烯丙基、环氧基等基团的均三嗪活性单体及以三聚氯氰的一取代物为原料合成线性聚氰酸酯和线性蜜胺的研究进展。     

TMCP工艺对X100管线钢M/A岛的影响

M/A岛是X100管线钢典型组织,对钢的强韧性有着重要的影响。利用热模拟和显微分析技术研究了冷却速度、变形量和等温温度对X100管线钢中M/A岛的影响规律。结果表明:随着冷速增加,M/A岛体积分数和平均尺寸都减小,由在晶界处分布的较大块状向板条间隙弥散分布的细小片层状转变;随着变形量增加,M/A岛体积分数先增加,变形量为40%达到最大,变形量达到50%时,M/A岛体积分数降低;快冷后随着等温温度升高,M/A岛平均尺寸增大,等温温度为450℃时体积分数最大,温度继续升高体积分数减小。观察到M/A岛形貌多呈棱角状、链条状、片条状和针状,分布在晶界和基体内,岛内精细结构观察到微孪晶马氏体。