Computational models are commonly used in engineering design and scientific discovery activities for simulating complex physical systems in disciplines such as fluid mechanics, structural dynamics, heat transfer, nonlinear structural mechanics, shock physics, and many others. These simulators can be an enormous aid to engineers who want to develop an understanding and/or predictive capability for complex behaviors typically observed in the corresponding physical systems. Simulators often serve as virtual prototypes, where a set of predefined system parameters, such as size or location dimensions and material properties, are adjusted to improve the performance of a system, as defined by one or more system performance objectives. Such optimization or tuning of the virtual prototype requires executing the simulator, evaluating performance objective(s), and adjusting the system parameters in an iterative, automated, and directed way. System performance objectives can be formulated, for example, to minimize weight, cost, or defects; to limit a critical temperature, stress, or vibration response; or to maximize performance, reliability, throughput, agility, or design robustness. In addition, one would often like to design computer experiments, run parameter studies, or perform uncertainty quantification (UQ). These approaches reveal how system performance changes as a design or uncertain input variable changes. Sampling methods are often used in uncertainty quantification to calculate a distribution on system performance measures, and to understand which uncertain inputs contribute most to the variance of the outputs. A primary goal for Dakota development is to provide engineers and other disciplinary scientists with a systematic and rapid means to obtain improved or optimal designs or understand sensitivity or uncertainty using simulationbased models. These capabilities generally lead to improved designs and system performance in earlier design stages, alleviating dependence on physical prototypes and testing, shortening design cycles, and reducing product development costs. In addition to providing this practical environment for answering system performance questions, the Dakota toolkit provides an extensible platform for the research and rapid prototyping of customized methods and meta-algorithms
标签： Optimization and Uncertainty Quantification
上传时间： 2016-04-08
上传用户：huhu123456
超强捕捉屏幕、截图功能 截取任何区域、窗口、按钮 可以在任何桌面捕捉图像，包括虚拟机桌面， 同时支持捕捉区域与上次捕捉区域大小一致。 可以捕捉活动窗口，扩展活动窗口，还可以捕捉无边框窗口等窗口截图。 按钮捕捉--专业的技术写手的理想选择，适合那些需要大量捕捉记录按钮的专业技术文档。 支持视频截图、连续截图 支持抓取视频、DVD 屏幕图像 、DirectX, 3Dfx Glide全屏游戏截图等。 支持图像的连续截取，截取后的图像显示在窗口工作区，可通过窗口缩略图视图逐一查看。 多种方式截图，非矩形窗口截取图像 可以自由定义截图区域的形状大小，可以是椭圆形，圆形或是徒手圈出截图区域形状大小，同时在[图像编辑]功能，将图像做成更多效果。 支持将图像保存为多种格式，并可以支持图像格式转换 截取编辑过的图像可以以20多种图形格式保存（包括：BMP, GIF, JPEG, TIFF, PCX 等）并阅览，同时还可以将图像格式转换为其他需要的格式。
标签： hypersnap
上传时间： 2016-04-29
上传用户：xc216
自适应数字波束形成
上传时间： 2016-05-29
上传用户：linana2
Turbo C是美国Borland公司的产品，Borland公司是一家专门从事软件开发、研制的大公司。该公司相继推出了一套 Turbo系列软件, 如Turbo BASIC, Turbo Pascal, Turbo Prolog, 这些软件很受用户欢迎
上传时间： 2016-06-02
上传用户：yangljnwnu
PROTEUS原理图元器件库 加入了这些元件 你的Proteus里会增加许多新元件
上传时间： 2016-06-14
上传用户：851197153
kkrieger 一款只有96K大小的3D射击游戏。 控制办法：前 w 后s 左a 右d 跳跃Spacebar（空格键） 切换武器1 2 3 4 5 这个微型FPS游戏，名为.kkrieger，是由.theprodukkt小组开发完成。其大小仅仅为96KB。 其画面无法和QUAKE3、DOOM3之类相比，但考虑到其96KB的身材，也足以令人震惊。那么theprodukkt小组是如何将这款游戏微缩到96KB中呢？该小组表示，他们并没有采用什么特别的压缩算法，只是对游戏中将用到的材质、网孔等资源进行了最为合理的安排，保证足够紧凑。对于该游戏所采用的深入技术细节，该小组并不愿公布。 以前网上经常传出许多大小只有64KB的3D演示动画，那是一些编程高手为了展示自己的实力完全采用汇编语言完成的作品。而相比来看，这款96KB的FPS游戏则更加精彩，因为他是一款有声有色，并且真正可以“玩”的游戏，但这款游戏并不是人们所想象的100%采用汇编语言完成，反而其主体由C++完成，之间贯穿少量汇编语言。
上传时间： 2016-06-27
上传用户：46606392
32feet.NET is a shared-source project to make personal area networking technologies such as Bluetooth, Infrared (IrDA) and more, easily accessible from .NET code. Supports desktop, mobile or embedded systems. 32feet.NET is free for commercial or non-commercial use. If you use the binaries you can just use the library as-is, if you make modifications to the source you need to include the 32feet.NET License.txt document and ensure the file headers are not modified/removed. The project currently consists of the following libraries:- Bluetooth IrDA Object Exchange Bluetooth support requires a device with either the Microsoft, Widcomm, BlueSoleil, or Stonestreet One Bluetopia Bluetooth stack. Requires .NET Compact Framework v3.5 or above and Windows CE.NET 4.2 or above, or .NET Framework v3.5 for desktop Windows XP, Vista, 7 and 8. A subset of functionality is available for Windows Phone 8 and Windows Embedded Handheld 8 in the InTheHand.Phone.Bluetooth.dll library.
上传时间： 2016-07-06
上传用户：magister2016
DnaSP DNA类比分析软件
标签： DnaSP
上传时间： 2016-07-19
上传用户：luwenkang
KVM the Linux Virtual Machine Monitor
标签： Machine Monitor Virtual Linux KVM The
上传时间： 2016-08-12
上传用户：heart_2007
LPC2124 + Proteus + uCOS + ZLG_GUI + LCD仿真。
标签： Proteus ZLG_GUI 2124 uCOS LPC LCD 仿真
上传时间： 2016-11-16
上传用户：zlkj
