运用Photoshop提升网店商品展示效果

对于成功的网店而言，经营之道固然重要，但网店商品的展示效果也不可小视，因为吸引并留住上门的客户是促成交易的先决条件。商品图片是买家对商品产生依赖的重要视觉元素。以Photoshop图像处理软件为例，探讨如何实现商品图片的缺陷修复和效果优化，以期取得良好的商品展示效果，从而激发买家的购买动机。     

基于RFID的销售管理与消费信息采集系统设计

基于射频识别技术(RFID)设计了一种在商场中能够识别与追踪消费者购物时对商品倾向度的系统,该系统通过RFID定位商品在商店中被消费者的移动情况,利用Wi Fi实现消费者在店内的定位,同时利用摄像机视频图像对消费者进行会员识别和人体动作行为识别,实现对消费者信息的采集与追踪,从而为商店管理层提供科学的市场分析。通过服务器与消费者手机应用程序(APP)通信,可为消费者提供当前所处位置的商品相关信息,提供无人导购、自助购物的服务体验。     

电子元件价格大跌 买进机会到来北大核心CSCD

据IHSi Suppli公司的元件价格走势追踪报告,糟糕的经济形势正在促使多种电子元件的价格大幅下挫,为买家带来了近期买进的机会。     

苹果和三星是头号消费与移动MEMS买家，市场影响力巨大

据IHS、iSuppli公司的MEMS市场追踪报告，苹果和三星电子2011年仍然是消费与移动应用MEMS器件的两个最大买家，巩固并扩大了市场控制地位和影响力。     

风云卫星云图自动识别追踪MCS的方法

根据中尺度对流系统(MCS)的识别判定标准,基于数字图像处理和模糊模式识别等技术,研究对MCS云团的自动识别与追踪。利用SUSAN边缘检测算子提取边界轮廓,并以亮温直方图结合云团的多个特征量构建追踪模板,实现云团追踪。通过对2014年5月10日12～17时的追踪实验发现,该方法可快速实现MCS云团的自动识别,并能实现对多时次MCS云团的连续有效追踪。     

电子元件价格大跌 买进机会到来

<正>据IHSi Suppli公司的元件价格走势追踪报告,糟糕的经济形势正在促使多种电子元件的价格大幅下挫,为买家带来了近期买进的机会。与以前的预期相反,目前使用广泛的元件价格势必会在第三和第四季度下跌,包括电容、晶体、滤波器、磁性元件、振荡器和印刷电路板(PCB)。     

粗糙海面三维目标电磁散射的快速估算方法

本文使用物理光学法(PO)与区域投影法(AP),结合计算机图形学技术,将两面角反射器的计算原理应用于目标与海面之间的多次散射计算.给出了一种快速判定三维空间内三角形面元是否相交的方法以加速射线追踪.针对Pierson-Moscowitz谱生成的海面,考虑海水的介电特性与海况的影响,计算了不同海况下的三维目标散射特性.并同文献结果进行了比较,表明本文的方法具有较好的准确性.     

基于扩展XACML的策略管理

在XACML(extensible access control markup language)和其管理性策略草案的基础上,针对目前XACML访问控制框架的特点,提出将XACML策略管理权限判定归结为利用委托策略对一个委托判定请求的判定,使用XML(extensible markup language)模式定义了此委托判定请求语法,描述了将策略管理请求规约为一个委托判定请求的过程,以及根据委托策略进行委托判定请求的判定过程,通过这种方法可以利用委托策略,对策略管理请求是否有效进行判断,从而实现基于扩展XACML的策略管理。     

基于三相自搜寻比较法的电气设备过热故障识别方法

电力设备过热故障图谱识别是判断电力设备故障程度的重要手段。工程实际中通常是对变电设备热拍照并进行人工甄别。为提高设备热像图故障判定准确率和效率,本文针对电力三相设备的特点,提出了一种通过三相分区块自动搜寻及温度对比的过热区域判定方法,通过将三相设备热像图每相分离,调整为相似大小与姿态,将新图像分块进行对比,判定对应区块是否有异常温升,从而判定某相设备出现的热故障。试验结果表明,本文基于计算机自动搜寻和判定的设备热诊断方法能够更加高效准确地判定识别三相设备热故障,从而能够提高电力设备热故障检测的效率、准确性与自动化程度。     

基于RFID的智能仓储管理系统的设计与实现

传统的仓储管理系统使用的是人工记录单据的方式,这种方式不但费时费力,还容易造成人为损失,而且劳动力成本高。针对以上问题,采用基于RFID技术的智能仓储系统的架构方案,设计了一套智能仓储系统。通过管理系统与RFID技术的结合,实现了对货物进行出库入库,货物浏览,人员管理,单品搜索等功能。从而完成了对商品的分类管理,提高了仓储能力。     

ISEM: a multiagent Simulator for testing agent market strategies

With the increasing importance of e-commerce across the Internet, the need for software agents to support customers and suppliers in buying and selling goods/services is growing rapidly. It is becoming increasingly evident that in a few years the Internet will host a large number of interacting software agents. Most of them will be economically motivated, and will negotiate a variety of goods and services. It is therefore important to consider the economic incentives and behaviors of economic software agents, and to use all available means to anticipate their collective interactions. This paper addresses this concern by presenting a multiagent market simulator designed for analyzing agent market strategies based on a complete understanding of buyer and seller behaviors, preference models and pricing algorithms, and considering risk preferences. The system includes agents that are capable of improving their performance with their own experience, by adapting to the market conditions. The results of the negotiations between agents are analyzed by data mining algorithms to extract rules that give agents feedback to improve their strategies.     

动基座电子水平仪的设计与实现

该动基座电子水平仪用于对浮台、船舶上设备倾角设备间的平行度进行动态检测及基准传递。该产品采用倾角传感器和确定敏感轴方位的棱镜和微处理器控制技术,有效地消除了摇摆频率干扰和杆壁效应的误差。解决了动基座下设备安装精度不高、检测不便的难题,设备结构紧凑,操作简便,并具有良好的通用性。在摇摆幅度不大于0.5°时,误差小于10s。并可根据用户要求可配备多种信号输出;该仪器检测灵敏度高、测量结果准确、显示直观,提高了动基座上设备安装、检测的工作效率。     

CMOS Smart Sensor for Monitoring the Quality of Perishables

We developed a CMOS integrated-circuit sensor to monitor the change in quality of perishables that depends on surrounding temperatures. Our sensor makes use of the fact that the temperature dependence of the subthreshold current in MOSFETs is analogous to that of the degradation of perishables. The sensor is attached to perishable goods such as farm and marine products and is distributed from producers to consumers along with the goods. During their distribution process, the sensor measures the surrounding temperatures and emulates the degradation of the goods caused by the temperature. By reading the output of the sensor, consumers can determine whether the goods are fresh or not. Our sensor consists of subthreshold CMOS circuits with a low-power consumption of 10 muW or lower     

A buyer-seller watermarking protocol

Digital watermarks have previously been proposed for the purposes of copy protection and copy deterrence for multimedia content. In copy deterrence, a content owner (seller) inserts a unique watermark into a copy of the content before it is sold to a buyer. If the buyer sells unauthorized copies of the watermarked content, then these copies can be traced to the unlawful reseller (original buyer) using a watermark detection algorithm. One problem with such an approach is that the original buyer whose watermark has been found on unauthorized copies can claim that the unauthorized copy was created or caused (for example, by a security breach) by the original seller. In this paper, we propose an interactive buyer-seller protocol for invisible watermarking in which the seller does not get to know the exact watermarked copy that the buyer receives. Hence the seller cannot create copies of the original content containing the buyer's watermark. In cases where the seller finds an unauthorized copy, the seller can identify the buyer from a watermark in the unauthorized copy and furthermore the seller can prove this fact to a third party using a dispute resolution protocol. This prevents the buyer from claiming that an unauthorized copy may have originated from the seller.     

论顾客关注与关注顾客

论文以ISO 9000标准提出的8项管理原则的第一条-以顾客为关注的焦点为出发点，论述了如何关注顾客和顾客关注的内涵，以及两个关注之间的联系，从而在实践中真正做到以顾客为关注的焦点。     

Anegsys: An automated negotiation based recommender system for local e-marketplaces

Local e-marketplaces are local online e-commerce platforms deployed by product and service providers and accessed by local customers via mobile devices. In this scenario, customers need to gather information about available offers from the different providers in the area, in order to select the most suitable for their needs and preferences. We present ANEGSYS, an agent-based recommender system for product acquisition which uses automatic bilateral negotiations to generate purchase pre-agreements among buyer and seller agents. This greatly enhances the search for solutions which maximize both buyer and seller utilities.     

浅析双垄断模式下的专项军品定价

中国军队现行重点装备即专项军品的采购模式主要体现为双垄断模式,专项军品采购方为军方,供应方为一些国有大中型企事业单位,事实上形成无论采购方还是供应方都是垄断状态,也就是双垄断模式。正因为这种双垄断模式,专项军品市场往往不是按照市场规律运转,专项军品的定价也就显得很不合理。文中主要分析双垄断模式的具体特征、双方的利益关系、影响专项军品定价的因素,以及如何针对这些特征和因素采取适当的定价策略。     

An efficient and anonymous buyer-seller watermarking protocol

For the purpose of deterring unauthorized duplication and distribution of multimedia contents, a seller may insert a unique digital watermark into each copy of the multimedia contents to be sold. When an illegal replica is found in the market sometime later, the seller can determine the responsible distributor by examining the watermark embedded. However, the accusation against the charged distributor, who was the buyer in some earlier transaction, is objectionable because the seller also has access to the watermarked copies and, hence, is able to release such a replica on her own. In this paper, a watermarking protocol is proposed to avoid such difficulties, known as the customer's right problem, in the phase of arbitration. The proposed watermarking protocol also provides a fix to Memon and Wong's scheme by solving the unbinding problem. In addition, the buyer is no longer required to contact the watermark certification authority during transactions, and the anonymity of the buyer can be retained through a trusted third party. The result is an efficient and anonymous buyer-seller watermarking protocol.     

主题特征格分析:一种用户生成文本质量评估方法

本文设计了一种用户生成文本的质量分析框架.首先,基于主题分析构建商品类别主题特征集合.其次,利用主题特征与商品分类的强关联关系,构建形式化概念分析的形式背景,将分类-主题概念格化简并生成主题特征格,以此构建五个质量特征并生成质量评估模型.最后,在真实评论数据上的实验结果表明新方法具有更高预测精度.     

Anonymous fingerprinting of electronic information with automaticidentification of redistributers

Fingerprinting is a technique for protecting intellectual ownership of electronic information. Anonymous fingerprinting schemes were recently proposed to allow a seller to fingerprint information sold to a buyer without knowing the identity of the buyer and without the seller seeing the fingerprinted copy. Finding a (redistributed) fingerprinted copy enables the seller to find out and prove to third parties whose copy it was. The authors present the first anonymous fingerprinting scheme in which the help of a registration authority is not required in order to identify a redistributor