多晶SiC薄膜的生长及其压阻特性

在Ａｒ、ＣＨ４的混合气体中用反应性磁控溅射法生长了多品ＳｉＣ薄膜。溅射靶使用了单晶硅片。ＳｉＣ薄膜的生长速率１０～４０ｎｍ／ｍｉｎ。Ａｒ的分压为６０ｍｔｏｒｒ（１ｔｏｒｒ＝１３３．３２２Ｐａ，以下同），ＣＨ４的分压为４０ｍｔｏｒｒ，衬底温度为７５０℃时，薄膜具有显著的多晶特性。杂质浓度、Ｈａｌｌ迁移率、电阻率分别为１０（１８）ｃｍ（－３）、１０ｃｍ（２）／Ｖ·ｓ、１０（－１）１０（－２）Ωｃｍ。压阻系数约为１５。     

低价格中求高性能

Ｃ Ｐ Ｕ：ＡＭＤＫ６－２４００ Ｓｏｃｋｅｔ７接口／散装主板：奔驰 ｋ６Ⅲ１５０ａ ＶＩＡ ＶＴ８２Ｃ５９８ＭＶＰ／ＡＴＸ／Ｓｕｐｅｒ ７／１Ｍ ＣＡＣＨＥ／ ＵＤＭＡ／６６硬盘： ＤｅｓｋＳｔａｒＧＸＰ／ＤＪＮＡ３７１３５０ １３．５Ｇ／ ＵＤＭＡ／６６／２Ｍ／７２００ｒｐｍ／ＩＤＥ／全国联保三年内存：ＡＣＥＲ（宏基）ＡＭ１／６４Ｍ８ｎｓ／１６８ＰＩＮ　ＳＤＲＥＭ／ＰＣ１００显示卡： ３ｄｆｘ Ｖｏｏｄｏｏ３ ２０００ Ｖｏｏｄｏｏ３／１６Ｍ ＳＤＲＡＭ／ＡＧＰ ２ｘ声卡：雅马哈ＹＡＭＡＨＡ７２４／３２硬波表…     

NT注册表中与安全设置有关的键值

禁止管理共享 ［ＨＫＥＹ－ＬＯＣＡＬ－ＭＡＣＨＩＮＥ＼ ＳＹＳＴＥＭ＼ ＣｕｒｒｅｎｔＣｏｎ－ ｔｒｏＩＳｅｔ＼Ｓｅｒｖｉｃｅｓ＼ＬａｎｍａｎＳｅｒｖｅｒ＼Ｐａｒｍｅｔｅｒｓ］ ＡｕｔｏＳｈａｒｅＳｅｒｖｅｒ”＝ ｄｗｏｒｄ： ００００００００ 关闭ｎｔｆｓ ８．３短文件名 ［ ＨＫＥＹ－ＬＯＣＡＬ－ＭＡＣＨＩＮＥ＼ ＳＹＳＴＥＭ＼ ＣｕｒｒｅｎｔＣｏｎ－ ｔｒｏｌＳｅｔ＼Ｃｏｎｔｒｏｌ＼Ｆｉｌｅｓｙｓｔｅｍｌ ＮｔｆｓＤｉｓａｂｌｅ８ｄｏｔ３ＮａｍｅＧｅｎｅｒａｔｉｏｎ”＝ｄｗｏｒｄ： ０００００００１ 限制…     

适合大众家庭使用的装机计划（续）

Ｃ Ｐ Ｕ：ＡＭＤ Ｋ６－２ ５００ Ｓｏｃｋｅｔ７／散装主 板：钻石 Ｋ６ＸＶ３＋ＶＩＡ ＭＶＰ３／ＡＴＸ／Ｓｕｐｅｒ ７／支持 １００ＭＨｚ外频硬 盘：ＱＵＡＮＴＵＭ火球十一代 ＬＣＴ １０．２Ｇ／ＵＤＭＡ ６６／５１２Ｋ／５４００ｒｐｍ／ＩＤＥ／３．５寸内 存：ＨＹ现代／１２８Ｍｂ ７．５ｎｓ／１６８ＰＩＮ ＳＤＲＡＭ／ＰＣ １３３显示卡：花王 ＴＮＴ２ ＶＡＮＴＡ／１６Ｍｂ ＳＤＲＡＭ／ＡＧＰ ２ｘ／４ｘ声 卡：Ａｏｐｅｎ建基 ＡＷ７４４ Ｐｒｏ ＹＡＭＡＨＡ７４４／６４硬波表／ＰＣＩ光 驱：索尼４８ｘ ４８ｘ／２５６ＫＢ／７２００Ｋｂｐｓ／带面板播放显示器：ＣＴＸ ＰＲ５００Ｆ １５＂纯平面／０．２４ｍｍ点距／最高分辨率 １２８０ × １０２４／１０８ＭＨｚ ＴＣＯ９９ＭＯＤＥＭ：ＧＶＣ致福 Ａ２Ａ型 ５６Ｋ／Ｌｕｃｅｎｔ／Ｖ．９０／内置软 驱：三菱１．４４＂     

华教软件HJACE4．0

华教软件ＨＪＡＣＥ４．０华教公司龚传兵，杨军ＨＪＡＣＥ４．０是专门为ＡｕｔｏＣＡＤＲ１２．０版开发的中文环境。ＨＪＡＣＥ采用Ａｕｔｏｄｅｓｋ公司提供的最新ＡＤＩｋｉｔ４．２（ＡｐｐｌｉｃａｔｉｏｎＤｅｖｉｃｅＩｎｔｅｒｆａｃｅ应用设备接口）技术，不仅...     

CAD网站荟萃

１．ｈｔｔｐ：／／ｗｗｗ．ｓｄｒｃ．ｃｏｍ／ｈｏｍｅ．ｈｔｍｌＳＤＲＣ公司（Ｉ－ＤＥＡＳ、Ｍｅｔａｐｈａｓｅ）２．ｈｔｔｐ：／／ｎｏｖａｘ．ｃｏｍ．ｃｎ德美科环球电脑公司（ＡｕｔｏＣＡＤ及第三方软件的本地化开发与系统集成）３．ｈｔｔｐ：／／ｗｗｗ．ｐｔｃ．ｃｏｍＰＴＣ公司（Ｐｒｏ／Ｅ）４．ｈｔｔｐ：／／ｗｗｗ．ｄｅｌｃａｍ．ｃｏｍ英国达尔康（中国）有限公司（著名的专业ＣＡＤ／ＣＡＭ系统供应商,ＰｏｗｅｒＳｏｌｕｔｉｏｎ）５．ｈｔｔｐ：／／ａｕｔｏｄｅｓｋ．ｃｏｍ／ｃｈｉｎａａｔｕｏｄｅｓｋ公司（…     

3M

ＭＰ８７２５多媒体投影机 显示：０．９英寸多晶硅ＴＦＴ（Ｘ３） 分辨率： １０２４ Ｘ ７６８（ＸＧＡ） 重量：４．４公斤 亮度：７００　ＡＮＳＩ流明（典型） 对比度： ２００∶１峰值（１００∶１　ＡＮＳＩ） 宽高比：４∶３ 镜头焦距：１∶１．３手动 屏幕尺寸： ２３英寸（最小）ｔｏ ３００英寸（最大） 水平扫描：２５－８０ＫＨｚ 垂直扫描： ５６－１２０ Ｈｚ 输入端口： Ｓ－Ｖｉｄｅｏ：（１） Ｍｉｎｉ ＤＩＮ ４－ｐｉｎ Ｖｉｄｅｏ：（１） ＲＣＡ ｊａｃｋ Ａｕｄｉｏ：（１） ＲＣＡ ｓｔｅｒｅｏ ｊａｃｋ ＲＧＢ：…     

模式识别优化技术在稀土镀铬工艺中的应用

采用最新开发的模式识别优化技术－ＡＴ软件系统，对汽车零件装饰性镀铬是关心的镀层覆盖和光亮区长度与电流密度，镀液温度，Ｈ２ＳＯ４，ＣｒＯ３浓度等因素之间的非线性关系进行研究，结果表明，比之工业上常用的优化方法－正交试验法，ＴＡ软件技术能给出具更准确的结论。     

多氯联苯（PCBS）分配系数的估算和预测

基于烷烃分子距边矢量,将以原子为基准的距离－边数 量扩展为以基团为基准的距离－边数矢量。研究发现新分子距边矢量与多氯联苯正辛醇／水分配系数的对数有很好的线性关系：ｌｏｇＫｏｗ＝４．１０８８４＋０．５２４２３７ｕ１－０．０９２９０６２ｕ２ｎ＝３７,ｒ＝０．０９９０８,Ｓ＝０．１７７５,ＥＶ＝０．９８１１,Ｆ＝１８６８。     

有机物性估算系统OPES微机版本的研制（Ⅱ）软件的开发与特性

本文主要介绍有机物性估算系统ＯＰＥＳ（ＯｒｇａｎｉｃｐｈｙｓｉｃａｌＰｒｏｐｅｒｔｙＥｓｔｉｍａｔｉｏｎＳｙｓｔｅｍ）微机版本的软件特性。ＯＰＥＳ的总体结构采用将输入、输出与物性估算程序完全分离的策略：实现了系统的有效分解；物性估算程序的进一步分解则有效地解决了在ＤＯＳ环境下开发大型应用程序所面临的内存使用问题；标准化模块的设计思想既提高了软件的开发效率，又方便了今后软件的维护。本文从基础物性数据库检索方法的选择、用户界面的灵活性与智能性、系统的透明性、系统的健壮性等方面介绍了ＯＰＥＳ的使用功能。＊Ｃｏｍｐｏｎｅｎｔ：１＊２４Ｏ５Ｃ３Ｈ３Ｎ１Ｏ７－１３－１（依次是：丙烯腈的ＩＤ号、分子式、ＣＡ登录号）ＣＨ２＝ＣＨＣ＊Ｎ（丙烯腈的ＯＣＳＣＥ线性码）ａｃｒｙｌｏｎｉｔｒｉｌｅ（丙烯腈的英文名）Ｔ２（温度点数为２，温度分别是２９３。１５Ｋ，４５０．００Ｋ）２９３．１５Ｋ４５０．００ＫＰＯ（没有输入压力，压力点数为０）ＰＨ２（相态为液态）ＰＯ３（极性类别是强极性）ｂａｓｉｃｄａｔａｏｆｃｏｍｐｏｎｅｎｔＮｏ．１（从基础数据库中查到的数据）ＳＴＲＣＨ２＝ＣＨＣ＊ＮＲＭ５３．０６００（ｇ／ｍｏｌ）Ｓ（分子量，质量码Ｓ     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.