浅谈照相手机的选购

在数字化电子产品迅速发展的今天,其相互渗透、融合又产生了一项新的、奇妙的产品：照相手机。目前照相手机已经成为了市场中一项普通的商品,但是很多人没有完全了解其类型、功能和适用范围。本文扼要介绍照相手机的产生历程、发展现状和功能,以及选购技巧和最佳的使用方法。     

2005“中国国家检测认可产品”评审揭晓

本刊讯近年来,中国数码照相机业呈现“井喷”式增长,数码彩扩机、数码片夹、照相器材等相关产业链的发展也形势喜人.如何选购一台高质量的数码照相机或是数码彩扩机,成了摆在广大消费者面前的一道难题.……     

把握机遇迎接挑战

随着我国加入世界贸易组织的日益接近,我国照相器材工业既迎来了挑战,又迎来了机遇。 今后,进口照相机产品的关税不可避免地将逐步下调,失去过去较高关税保护的我国照相机工业,面临的将是挟其巨大技术优势的美、日照相器材跨国公司,以较过去更为便宜的价格把其照相产品竞     

关于数字照相机的图像质量

现在国内外市场上数字相机如雨后春笋般不断推出新产品，其结果是一方面相机的科技水平日益提高，价格日益降低，另一方面也为广大消费者提供了更大的选购余地。数字相机的档次和价格相差很大，从几千元到几万元甚至十几万元人民币。对于一般电脑受好者和相机爱好者来说，购买价格在几千元人民币的数字相机也就可以了。除去价格因素外，大家更注重的应是数字相机的图的质量。数字相机的优势在于它能及时提供拍摄的效果，可以随时把是现在你面前的景象传送到数字相机中，并可以包括数百万种颜色，不用去冲洗胶卷和扩印照片。你只要把影像从数…     

照相器材价格小议

经常要为朋友选购照相器材 ,既收集一些商情信息又常去光顾照相器材商店 ,因此对照材市场价格稍有了解。总体感觉照相器材近几年来市场价格相对稳定 ,但是要想以最适合的价格采购到如意的照相器材 ,多跑跑 ,多看看 ,货比三家绝不为过。积几年购买照相器材的经验 ,深知照材市场价格差异相当之大。不下功夫急于求成 ,稍不留神就要多花费不少银两。工薪阶层的业余影友更须珍惜每一笔支出 ,给自己购置照相器材如此 ,为朋友购置更要竭尽全力。仅以一管之窥 ,小议一下某些１３５型照相机器材市场价格。●同一地区照相器材市场价格差异不小京城照材…     

MF相机和AF相机变焦镜头和定焦镜头德国相机和日本相机的思考与选择

近年来读了一些对摄影器材评论和选择的文章 ,专家和影友的真知灼见对本人鉴赏及选购照相器材大有裨益。由于笔者原为圈外人士 ,不存在对摄影器材的固有观念和传统影响 ,因此似乎易以现时状况和业余摄影爱好者的角度分析观察来自各个方面的评论。纵观这些文章观点林立议论叠出     

数码照相机与紫外荧光照相

紫外荧光照相是刑事照相中重要的技术手段。数码照相机在刑事照相中的广泛使用,使原本较复杂的紫外荧光照相过程变得简单了。运用数码照相机进行紫外荧光照相,器材简单、操作方便。可以大大提高工作效率,可以解决许多实际工作中的问题。     

浅谈数码相机的发展趋势

本文从数码相机的外观造型和内在照相性能两个方面简述数码相机的发展趋势。本文在指出专业和时尚数码照相机的外观造型发展方向的同时,重点从照相性能方面,如数码相机配备的感光芯片(CCD或CMOS)、变焦镜头、感光度、液晶显示屏、实时取景、防抖功能、面部识别、智能摄影模式等方面介绍了数码相机的发展趋势。     

诠释2007数码相机单反年

2007年,数码单反相机的价格迅速下降,尤其是消费型数码单反相机的价格已降低到5000元左右,能够为一般消费者所接受,而目前数码单反相机的性能又有了新的提高：千万像素、机身防抖、CCD除尘、生活防水等,很受市场欢迎,因此有人称2007年为数码单反相机年,本文重点介绍几种新上市的数码单反消费型相机,如：佳能EOS400D、尼康D80、索尼A100、宾得K100D、奥林巴斯E-510,供选购时参考。     

走出选购数码相机的技术误区

在当今这样飞速发展的信息时代，数码照相机就如同手机、冰箱、电视机一样，在现代生活中不可缺少。摄影爱好者在选购数码照相机时，首要考虑的往往是照相机的像素。而对其它指标，如快门的时滞、存储速度、色彩动态范围等很少关注。但这些指标也事关照相机的性能，只有这些综合性能比较均衡，能“德智体全面发展”。数码照相机才能发挥最佳性能。本文针对当前市场上数码照相机的特征和摄影爱好者在选购数码照相机时容易忽视的问题进行了分析，可帮助摄影爱好者在选购数码照相机时走出误区。     

漫谈一款照相、摄像两用高清数码照相机（三洋Xacti HD Dual Camera VPC-CG10型）的功能特性

本文较详细地介绍了一款照相、摄像两用高清数码照相机（三洋Xacti HD Dual Camera VPC-CG10型）的性能特性。与其它有关照相机和摄像机相比较,其在许多功能上有其独到之处,更适用于普通家庭和广大摄影爱好者使用。     

家用数码相机和传统相机性能价格比的综合比较

本文扼要阐明了有关家用数码相机的一些基本概念和其工作原理,生产工艺以及结构的技术数据,并与传统相机进行对比,可为一般照相爱好者提供可靠的依据,以对这两种照相机的性价比作出恰当的评价。     

Agent-based simulation of pricing strategy for agri-products considering customer preference

Agri-products typically have short life cycles and are perishable. The price of perishable goods is influenced by many factors. Customers in a market have different preferences with regard to price, the quality of the product and the brand. Though studies on pricing strategies that consider customer preference are rare, this paper addresses the problem of optimal pricing strategy for retailers considering customer preferences. Traditional mathematical methods cannot adequately describe the complexities of customer preference. Due to these complexities, this paper proposes an agent-based simulation model composed of six retailers and hundreds of customers, each with personal preferences. The different retailers set prices according to freshness, inventory, cost and other factors. Due to the perishable nature of the products considered, this paper proposes a new categorising price strategy that sets prices according to different degrees of treatments. By comparing the final profit of all retailers at the end of a simulation, the categorising price strategy is demonstrated to be the optimal strategy if customers with different preferences are randomly distributed. Furthermore, based on the model, the paper studies how optimal strategies are influenced by the proportion of customers with different preferences.     

竞争环境下专家服务型工作的定价和质量控制

以专家服务型工作为主要研究对象,考虑在市场竞争的环境下,企业面对针对价格和质量水平具有不同敏感程度的策略顾客,以及相应的反应函数,为了使企业期望利润最大化提出不同的最优定价和质量控制策略.结合数据演示我们看到公司会对价格敏感的顾客采用低价策略,而对质量要求高的顾客提高质量水平；同时解释了为何公司应该尽量发展优质的客户群...     

家庭影院显示器材的选购策略

过去,一套高档的家庭影院设备价格高达10万美元,随着技术的进步,目前家庭影院的价格已经大大降低,为一般家庭所能够接受,现在市场上家庭影院显示器材品种很多,类型各异,有显像管电视机、液晶电视机、等离子电视机、数字背投和数字正投电视机等等,性能及价格差别极大,分别适应不同的居室条件和不同的消费层群。本文分别介绍不同品种家庭影院显示器的特点,以帮助读者节省时间和金钱,选购最适合自己的家庭影院显示器。     

‘Cyclo-Photographers’, Visual Modernity,and the Development of Camera Technologies, 1880s–1890s

The intertwined development of popular photography and cycling in Britain was felt so close that, in the 1880s, contemporary commentators could write of ‘cyclo-photographers’. The camera apparatus available at this time, bulky and fragile, was largely impractical to carry on a ride, and thus cyclo-photographers joined outdoor photographers in asking manufacturers for simpler and easier to operate cameras. However, a close reading of primary sources reveals that such demands were also the result of a new engagement with the possibility of seeing enabled by cycling itself. What was the cyclo-photographers’ experience of visual modernity? This article explores whether, and in what ways, the parallel emergence of a desire for compact cameras was linked to the new, and interconnected, ways of moving and seeing that the engagement with these two modern cultural technologies had made possible.     

Modelling and analysis of a cooperative production network

In this study, we examine the cooperative production business model for a group of producers serving their own customers and also have access to external customers who can make an agreement to buy products at a lower price if a desired service level can be guaranteed. When the producers cannot meet the desired service level requirement of the external customers at the offered price on their own, they participate in a cooperative network. The network consolidates the external customers for its members and routes an arriving external customer to one of the participants. We determine the optimal production and rationing policies for each participating manufacturer as well as the optimal routing policy for the network. We also propose an accurate approximate method to analyse a network with a high number of homogeneous producers using a single queue approximation method. We show that, based on the parameters of the producers and the external market, the network can provide the desired service level for the external customers at the offered price and makes all the members increase their profit by better utilising their capacity and serving more external customers.     

电子商务环境下无缺陷退货政策

研究电子商务环境下包含一个制造商和一组顾客群的单周期供应链系统,建立了无质量缺陷的退货问题决策模型。分析顾客购买及退货的策略性决策的特点,确定了3种退货政策下,制造商的最优定价、最优供货量、最优退货价格及网络销售成本的临界值。比较分析3种退货政策的优劣及其对供应链绩效的影响。结果表明,当商品的采购/制造成本或残值较低时,零退货政策优于全额退货政策;而实行部分款额退货政策的供应链绩效优于全额退货政策。