Incompressible Laminar Flow Over a Three-Dimensional Rectangular Cavity

IntroductionMany aerodynandc configurations include cavities asan integral part of design, manufactUre and performance.Examples of such configurations include landing-gearwells, bomb bays and junctions between surfaces, to namea few. Cavity phenomena can also be observed on a muchlarger scale, for example, around the channel gates orharbor entrances [l][2]. Flow past a cavity is oftencharacterized by unsteady velocity and density, andfurthermore by unsteady pressure fluctuation (oftenreferred…     

ATI显示卡驱动横向比较

大家都知道,一个好的驱动程序对于一个硬件来说是最重要不过了,我们这一次要做的事情是测试一下不同的驱动对于同一块卡的影响,包括显示速度、运行稳定性、显示的画质等等。我们一共用了3块卡做比对,分别是:Radeon LE32MB、Radeon 32MB DDR和RAGE 128 PRO(ALL-IN-WONDER),并从它们的驱动之中选择了一些有代表性的来进行测试。测试平台:CPU:Duron750超频至884(138×6.5)     

让你眼球转不停

上期的精彩七月我们曾介绍了如何利用网络游戏来度过漫长的暑期，但是，请别沉迷游戏，天天游戏太伤神了，换个方式来度过剩下的假期吧!     

补给站

Softick．Card．Export．v2．0;列车时刻表V0．9；RemotePlus for Palm OS 1．4；PalmaryPhotoFrame;绿色小尺子……     

A comparison of alternative methods for predicting the carcass composition of crossbred lambs of different breeds and crosses

Carcass data for a total of 2808 lambs from three breed trials were used to evaluate a series of linear measurements, visual scores and the proportions of tissues in joints as predictors of carcass composition. The trials involved crossbred lambs out of different dam types by sires of the main British meat breeds and by Ile de France, Oldenburg and Texel sires. Each trial was carried out over a number of years and involved approximately equal numbers of female and castrated male lambs. Potential predictors were examined in terms of the precision of prediction and in terms of the robustness of prediction equations to differences in sire breed and sex. The overall standard deviation (s.d.) of carcass lean percentage averaged over trials was 4·3. Combinations of simple measurements, including visual fat scores, percentage perinephric and retroperitoneal fat in carcass and M. longissimus dimensions achieved a residual s.d. of 2·5 for carcass lean percentage. The application of an overall prediction equation to individual sire breed means resulted in considerable bias (predicted-actual lean percentage): the mean square deviation was 0·75. In comparison, the sex differences were relatively unimportant. The precision of sample joints was examined in relation to their cost of dissection. The best end neck and shoulder joints offered a high level in relation to cost: typical residual s.d. were 1·5 for carcass lean percentage. Joints and combination of joints with high predictive precision tended to have equations that were robust to differences between sire breeds.     

易慧最爱三下锅

易慧广州赛区第二名．全国第八名的超级女声。一个外表平凡的普通女生．一个大大咧咧的爽朗女生，一个毫不做作的可爱女生．一个笑声爽朗的自信女生．一个通过选秀节目让全国观众熟知的超级女生．一个不算漂亮却因可爱而美丽的直爽女生．一个靠声音打动无数人的女生。2005年．中国最红火的娱乐节目《快乐中国超级女声》让一些平凡的女生实现了明星梦想，无数平凡女孩通过这个节目成为受人关注的明星，易慧，就是其中的一个幸运儿。