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State equations, the accelerating algorithm and simulated ripple results of a symmetrical Cockcroft Walton circuit are described.

以对称型 Cockcroft-Walton电路为对象，介绍了状态方程的建立和加速计算方法。

Simulated anneal and Tabu are extensively applied in the field, in which, Genetic Algorithms is most general one. In the former study of the optimizing for motor, people often focused on cross operator and variation operator, which was based on the G.A.

在以往的以遗传算法为优化设计主要算法的研究中，偏向于对交叉算子与变异算子进行改进以提高遗传算法的效率，即对遗传算法的本身进行改进，从而产生了很多种类的混合遗传算法。

The optimization design method offers a practical way for reducing the power consumption and fluctuation of fire rate of gatling gun mechanism.gatling gun; genetic simulated annealing; optimization design

本文在此基础上，结合遗传退火模拟算法，建立转管武器的多目标优化模型，同时考虑减小射速波动、降低系统功耗和降低后坐力的转管武器自动机系统优化方法，1 转管武器自动机的优化模型1。

The governing equation with chemical reacting flow is established. Using time splitting algorithm, the convection term is solved with the second-order Godunov method and the chemical reaction is coped with two-step model. Standing oblique detonation waves induced by an accelerating projectile are simulated numerically. The results are compared well with the data of the experiments.

建立了含化学反应流体流动的数值模拟模型，用时间分裂法对对流项和化学反应项分别采用高阶Godunov格式和两步反应模型进行处理，对锥形斜爆轰波和驻定在飞行弹丸上的斜爆轰波流场进行了数值模拟，得到了与实验现象相吻合的计算结果。

Now Choptuik and Frans Pretorius of Princeton University have simulated such collisions, including all the extremely complex mathematical details from general relativity.

现在，肖普提克和普林斯顿大学的弗朗斯·普雷托里斯模拟了这样的对撞，同时利用了广义相对论中全部特别复杂的数学资料。

Now Choptuik and Frans Pretorius of Princeton University have simulated such collisions, including all the extremely complex mathematical details from general relativity.

超普图伊科和比勒陀利乌斯大学的佛朗斯模拟了这种碰撞，并得到了极其复杂的相对论的详细数据。

Based on the data analysis and numerical simulation, the Arctic sea ice climate variability was researched, the result were as following:(1) The analysis on the seasonal cycle of the Arctic Ocean and atmosphere showed that: The seasonal surface wind is somewhat trade wind like in some regions in the Arctic. The surface air temperature is robustly determined from the underlying environments such as sea ice and Greenland glaciers. In the sea ice region the precipitation rate is larger than that of evaporation. Furthermore, the Arctic Ocean hydrology is profoundly influenced by the surrounding rivers discharge. These are the decisive factors on the ocean salinity pattern. Sea ice flux through the Fram Strait is larger in winter than in summer. From the 40s in the 20th century on, the ice volume flux has an increasing trend. The Arctic rivers flood season is about the melt period, the winter rivers discharge has a significant increasing. Correlation analysis shows that 7 to 10 years is a characteristic time scale that rivers discharge leads Fram Strait ice volume export.(2) Considering 9 major arctic rivers, the Arctic Ocean circulation was simulated through BOM. The result shows that: The BOM can reproduce the main Arctic Ocean circulation pattern. The"Islandization"which is commonly used in OGCMs to treat the North Pole, not only influences the ocean current near the pole, but also influences the current in the Northern Atlantic Ocean, thus the bogus island might influence global climate through thermohaline circulation in the Atlantic Ocean.

在资料分析和数值模拟的基础上，对北极海冰的气候变率进行了深入的研究，结果如下：(1)对北极地区大气和海洋季节循环特征的分析表明，气候平均风场在部分地区具有&信风&的性质；而气温场与海冰分布及格陵兰半岛冰原的下垫面特征有密切关系；在北极海冰区的降水量大于蒸发量，并且在全球大洋中北冰洋受到河流径流的影响最大，对北冰洋的盐度分布有决定作用；通过弗瑞姆海峡的海冰通量在冬半年大于夏半年，并且从20世纪40年代起，海冰的体积输送有增加趋势；北极河流的汛期主要在融化季节，冬季的河流流量有显著增加的趋势；相关分析表明7到10年是北极河流流量影响弗瑞姆海峡海冰体积输送的一个特征时间尺度；(2)采用BOM海洋模式对北冰洋海洋环流进行了模拟研究，在模式中考虑了北极9条主要河流的作用，结果表明该海洋模式可以较好模拟出北冰洋海洋环流的基本特征；多数大洋环流模式采用&北极岛化&的方法处理北极点，模拟结果表明&北极岛化&不仅影响到极点附近的海流，还会对相对较远的北大西洋海流造成影响，并可能通过大西洋的热盐环流对全球气候产生影响；(3)采用CSIM4海冰模式对北极海冰的气候态进行了模拟。

The flow field around NACA 0012 airfoil with software Fluent was simulated,to compare the correspondent aerodynamic performance variation before and after icing.

本文用FLUENT软件模拟了结冰后NACA 0012翼型周围流场的变化，并与结冰前NACA 0012翼型的气动性能进行了对比。

Msueum . The Centre also houses a Flight Cent re with exhibits, flight simulating computers, a Beech 18 cockpit, simulated flights in a Beaver, a Link Trainer, and a pilot aptitude test.

该中心还设有一个飞行美分，重新与展品，飞行模拟电脑，榉树18驾驶舱，模拟飞行，在一个河狸，连结教练机，以及一项试验能力倾向测试。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。