保养也很重要：移动电源常见故障原因分析

曾经有消费者向笔者抱怨某名牌移动电源一年内两次返厂维修，对其质量表示担忧。也有移动电源行业的朋友抱怨因用户的不良使用方法使移动电源故障频发导致售后服务成本过高。作为2013年数码配件市场中最为热闹的产品，移动电源在使用过程中产生的各类大小故障问题确实不少，其中除了产品质量问题外，因用户不良的使用习惯和缺乏保养导致的故障也不少。为此我们特别准备本文，从引起移动电源故障的原因进行分析，与大家分享移动电源该如何保养以获得更长的使用寿命。     

浅析移动电源的质量问题

快速发展的电子产品在提供人性化体验和便捷的同时也具有高耗电的特性,这推动了移动电源的广泛使用,但目前移动电源缺乏统一的行业标准,容量虚标、容量转换效率低和安全性不足等质量问题大量存在,为了解决这些问题,必须有针对性的改善移动电源的评价标准,改善容量和安全性的问题,以利于移动电源的健康发展。     

移动电源的诞生之旅

移动电源虽小,但是因为使用了大容量锂离子电池,所以安全问题不能忽视。移动电源除了在电路设计上要考虑过流、过载、短路等保护之外,还要在生产制造端加强原料品质和制造工艺,才能两手抓,把移动电源的质量提高。移动电源领域山寨品牌众多,品质良莠不齐,安全问题频出不穷。接下来,我们一起来到移动电源的生产线,看看一款优秀产品在生产制造中需要经过哪些考验。     

移动电源的新发展

移动互联网的发展需要移动电源的支持,在这一领域主要有薄膜电池技术、压电材料技术、无线充电技术.在移动互联网时代,客户端的使用很重要的一部分在于其使用时间,无论性能多么优异,不能够在脱离有线电源时保持开通的手机,平板电脑或者其余智能产品都不能     

有容乃大 大容量移动电源导购指南

对当下的年轻人来说,现如今谁还没有几个移动设备呢？不管你是有多部手机,还是在拥有一款手机的情况下配备了一个iPad等平板产品,都不可避免地有经常需要充电的情况,因此拥有一个大容量移动电源就很有必要了。不管你是日常使用还是短途甚至长途旅行,大容量移动电源都可以较好地满足你对多部移动设备的充电需求。但面对市售多达几十上百个号称大容量移动电源、且外形迥异的产品,你是否有一种无力感呢？究竟大容量产品应该如何选择呢？     

移动电源，你虚标了吗？

最近,数码市场上突然有一个小家伙火爆了起来,好像一夜之间大家都开始销售和使用,它就是——移动电源。似乎出门包里不装一块移动电源,     

猫腻那点事儿 揭秘移动电源劣质电芯的陷阱

本刊在五月下旬对某品牌移动电源涉嫌使用二手电芯之事进行了报道后，迅速在业界引起了较大的反响。不少用户和厂商都通过微博和MC论坛等途径表示关注，特别是关于移动电源使用劣质电芯的问题更是受到了广受关注。     

首款三防两充移动电源MOMAX摩米士“硬汉”

浸水,进尘、摔撞,被喻为电子产品三大“杀手”,最常见的三防数码产品为手机和数码相机,而随着人们对数码产品使用条件的追求．三防产品也越来越受到关注,三防已经不仅局限于手机和数码相机。MOMAX摩米士推出了首款具备三防功能的“硬汉”移动电源．不仅具有三防性能和出色的产品设计,还配备有爬山扣,内置照明LED灯等贴心的户外设计,让这款移动电源产品有了一丝“移动电源中的SUV”的味道。     

从内解析 移动电源其实很简单

正普通用户衡量移动电源的标准其实很简单,无非是容量大、外观时尚。其实这只是衡量移动电源简单的标准,如果将一款移动电源拆后便会发现,内部原件的差别会为移动电源的使用带来直接的影响。抛18650电芯与聚合物锂电池不说,容易被用户忽略的电路板恰恰是一款移动电源的重中之重,其起到的升压、电路保护以及过载保护都是移动电源锁要的。     

地铁上使用充电宝为何不安全

<正>相关部门对在地铁上使用充电宝并无规定,广州地铁的建议目前还只是不具强制禁止性的建议。建议更多的是以保障广大地铁乘客安全为出发点,预防危险事故发生。今年5月,深圳4号线一列地铁尾部发现烟雾,乘客紧急疏散。后消防查出,系因乘客携带的移动电源爆炸。事故虽未造成伤亡,但也足够引起人们对移动电源在地铁使用安全的重视。移动电源使用存在爆炸的风险,一旦移动电源在地铁上     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。