Prakash Rashinkar has over 15 years experience in system design and verificationof embedded systems for communication satellites, launch vehicles and spacecraftground systems, high-performance computing, switching, multimedia, and wirelessapplications. Prakash graduated with an MSEE from Regional Engineering College,Warangal, in India. He lead the team that was responsible for delivering themethodologies for SOC verification at Cadence Design Systems. Prakash is anactive member of the VSIA Functional Verification DWG. He is currently Architectin the Vertical Markets and Design Environments Group at Cadence.
上传时间： 2013-11-19
上传用户：m62383408
半導體的產品很多，應用的場合非常廣泛，圖一是常見的幾種半導體元件外型。半導體元件一般是以接腳形式或外型來劃分類別，圖一中不同類別的英文縮寫名稱原文為 PDID：Plastic Dual Inline Package SOP：Small Outline Package SOJ：Small Outline J-Lead Package PLCC：Plastic Leaded Chip Carrier QFP：Quad Flat Package PGA：Pin Grid Array BGA：Ball Grid Array 雖然半導體元件的外型種類很多，在電路板上常用的組裝方式有二種，一種是插入電路板的銲孔或腳座，如PDIP、PGA，另一種是貼附在電路板表面的銲墊上，如SOP、SOJ、PLCC、QFP、BGA。 從半導體元件的外觀，只看到從包覆的膠體或陶瓷中伸出的接腳，而半導體元件真正的的核心，是包覆在膠體或陶瓷內一片非常小的晶片，透過伸出的接腳與外部做資訊傳輸。圖二是一片EPROM元件，從上方的玻璃窗可看到內部的晶片，圖三是以顯微鏡將內部的晶片放大，可以看到晶片以多條銲線連接四周的接腳，這些接腳向外延伸並穿出膠體，成為晶片與外界通訊的道路。請注意圖三中有一條銲線從中斷裂，那是使用不當引發過電流而燒毀，致使晶片失去功能，這也是一般晶片遭到損毀而失效的原因之一。 圖四是常見的LED，也就是發光二極體，其內部也是一顆晶片，圖五是以顯微鏡正視LED的頂端，可從透明的膠體中隱約的看到一片方型的晶片及一條金色的銲線，若以LED二支接腳的極性來做分別，晶片是貼附在負極的腳上，經由銲線連接正極的腳。當LED通過正向電流時，晶片會發光而使LED發亮，如圖六所示。 半導體元件的製作分成兩段的製造程序，前一段是先製造元件的核心─晶片，稱為晶圓製造；後一段是將晶中片加以封裝成最後產品，稱為IC封裝製程，又可細分成晶圓切割、黏晶、銲線、封膠、印字、剪切成型等加工步驟，在本章節中將簡介這兩段的製造程序。
上传时间： 2013-11-04
上传用户：372825274
unix或linux下的DNA分析软件源码 其功能如下 1. Edit up to 256 peptide or DNA sequences simultaneously. 2. Translates DNA->protein click next to display next frame. 3. Dot matrix plot of any 2 sequences. 4. Rudimentary amino acid statistics (MW and amino acid percentage) 5. Saves matrix plot as PBM image format. 6. Sequence reversal. 7. Creates alignment file for highlight (below). 8. Tab key toggles editing of next sequence.
标签： simultaneously DNA sequences Transla
上传时间： 2013-12-13
上传用户：lwwhust
可在系统引导时工作的RootKit,较简单 1) It s very small.The basic framework is just about 100 lines of assembly code.It supports 2000,XP,2003 2) It patches the kernel at runtime(no files are patched on disk).(basic version has this code removed , so as others could understand it easily). 3) BOOT KIT is PXE-compatible. 4) It can even lead to first ever PXE virus 5)It also enables you to load other root kits if you have physical access(Normally root kits can only be loaded by the administrator)
标签： framework assembly RootKit small
上传时间： 2014-01-02
上传用户：gdgzhym
Purpose of this White Paper This white paper describes a collection of standards, conventions, and guidelines for writing solid Java code. They are based on sound, proven software engineering principles that lead to code that is easy to understand, to maintain, and to enhance. Furthermore, by following these coding standards your productivity as a Java developer should increase remarkably – Experience shows that by taking the time to write high-quality code right from the start you will have a much easier time modifying it during the development process. Finally, following a common set of coding standards leads to greater consistency, making teams of developers significantly more productive.
标签： conventions collection describes standards
上传时间： 2014-02-12
上传用户：123啊
《多传感器数据融合手册》 《Handbook of Multisensor Data Fusion》 作者: David L. Hall 定价: USD 199.95 出版社: CRC 出版年: 2001-06-20 简介 · · · · · · Multisensor data fusion is an emerging technology with important applications in both the military and civilian sectors, such as target recognition, robotics, medical diagnostics, and "smart" buildings. It draws on techniques from wide-ranging disciplines, including artificial intelligence, pattern recognition, and statistical estimation. This handbook is an up-to-date, comprehensive resource for data fusion system designers and researchers. Top experts in the field lead readers from a basic introduction and survey of data fusion technology to advanced mathematics and theory and to some very practical advice for systems implementers.
标签： L. Multisensor Handbook 199.95
上传时间： 2014-02-06
上传用户：二驱蚊器
In this talk we will consider two approaches in dealing with the risk of supplier bankruptcy. In the first model, we study the effects of supply disruption risk in a supply chain where one buyer deals with competing risky suppliers who may default during their production lead-times.
标签： approaches bankruptcy the consider
上传时间： 2014-08-04
上传用户：lanjisu111
In this article, we present an overview of methods for sequential simulation from posterior distributions. These methods are of particular interest in Bayesian filtering for discrete time dynamic models that are typically nonlinear and non-Gaussian. A general importance sampling framework is developed that unifies many of the methods which have been proposed over the last few decades in several different scientific disciplines. Novel extensions to the existing methods are also proposed.We showin particular how to incorporate local linearisation methods similar to those which have previously been employed in the deterministic filtering literature these lead to very effective importance distributions. Furthermore we describe a method which uses Rao-Blackwellisation in order to take advantage of the analytic structure present in some important classes of state-space models. In a final section we develop algorithms for prediction, smoothing and evaluation of the likelihood in dynamic models.
标签： sequential simulation posterior overview
上传时间： 2015-12-31
上传用户：225588
As science advances, novel experiments are becoming more and more complex, requiring a zoo of control devices and electronics executing complicated sequences of steps. Device availability and monetary constrains usually lead to a highly heterogeneous setup with components from several different manufacturers using many different protocols and interfacing mechanisms. This often results in control software being puzzled together to use and provide a multitude of interfacing and control functionality, each using their own calling conventions, data structures, etc. To make matters worse, usually a group of relatively independent programmers is trying to write and maintain the code base. Often this causes extensive duplication of effort as program segments are hard to reuse, since unpredictable changes to the segments by the original authors might compromise other code using these segments.
标签： more experiments requiring advances
上传时间： 2013-12-24
上传用户：qilin
Fast settling-time added to the already conflicting requirements of narrow channel spacing and low phase noise lead to Fractional4 divider techniques for PLL synthesizers. We analyze discrete "beat-note spurious levels from arbitrary modulus divide sequences including those from classic accumulator methods.
标签： settling-time requirements conflicting already
上传时间： 2016-04-14
上传用户：liansi
