It is important for the application of formal approach and formal specification in all stages of software development to study and design automatic refinement from Z to high-levellanguage: Insure complete formalization in all stages of software development; Avoid antilogy in refinement due to mistaken operation or computative mistake and insure consistency and integrity of system; Due to avoiding manual operation in refinement process, it is feasible to bulid a compile environment that Z specification automatic refine and form high-level programme, this will accelerate the promotion and application of Z in industry.

Z到高級語言自動求精的研究與設(shè)計對于形式化方法及形式規(guī)格說明應(yīng)用于軟件開發(fā)的各個階段具有非常重要的意義：確保了從需求分析階段開始的軟件開發(fā)周期的完全形式化啊啊啊轻点在线观看；避免了人工的誤操作或演算錯誤導(dǎo)致的求精前后不一致久久一级黄片羞羞，保證了系統(tǒng)的一致性和完整性；由于求精過程避免了手工操作在线视频自拍网，因而Z規(guī)格說明自動精化為程序代碼的編譯環(huán)境可以建立国产一国产一级无码视频，這將會加速Z規(guī)格說明在工業(yè)界的推廣應(yīng)用。

If further refinement is to be performed then the aposteriori error estimators are used as a guide as to show the refinement mightbe accomplished most efficiently.

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In this thesis, a novel method is proposed to raise the quality of triangular mesh generation. Whereas previous refinement methods mainly focus on inserting a new vertex into the circumcenter of a skinny triangle or tetrahedron, the proposed method is striving to insert a vertex near the geometric center of an effective region.

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Meanwhile, the experiments show that the multi-level swarm intelligence refinement algorithm is better than the multi-level tabu search refinement algorithm, especially in view of the probability that the approximate global minimum partition of the coarser graph may be the local minimum partition of the finer graph. Furthermore, the experiments show that the multi-level ant colony optimization refinement algorithm achieves more performance improvement than the multi-level particle swarm optimization refinement algorithm, using the gain of vertex more effectively.

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In general L_p spaces,one can characterize the smoothness of refinement function with Lipschitz space. In particular, one can characterize the smoothness of refinement function in Sobolev spaces.

對于一般的L_p空間，在細(xì)分方程收斂的前提下九集黄片视频，對細(xì)分函數(shù)光滑性的刻畫用一般的Lipschitz空間即可亚洲中文字幕五码；特別地，當(dāng)p=2時天天AV天天翘天天综合网色鬼国产，可以在Sobolev空間中去刻畫其光滑性美女扒开腿让男人桶爽动态图。

The mature of pseudo-recalescence is the remelting of dendrites. This leads to apparent refinement of dendrite microstructures. Therefore the experiment support the viewpoint of dendrite remelting for microstructure refinement during supercooling solidification.②Under the condition of supercooling solidification, secondary recalescence cannot show up for single phase solid solution.

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extended progressive refinement method as a fast algorithm of radiosity minimize the recomputation time after any virtual scene modification.in this paper,the extended progressive refinement method is studied and implemented in the way of opengl.then the data which can prove the efficiency of the algorithm by changing scene reflectivity and scene geometry during experiment is obtained.in this way,the method is proved to be efficient.

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It is possible to produce low-titanium aluminum alloy directly. Three months of periods of industrial test for production low-titanium aluminum alloy was conducted using the 80kA prebake electrolysis cells. The test results showed that the electrolysis cell can work stably, and the effect of TiO2 added into electrolyte on electrolytic process parameters, current efficiency, consumes of materials and energyare trifling. The titanium content in alloys is stable and the absorbility of Ti is high. The microstructure of electrolytic low-titanium aluminum alloy is homogeneous. The grain refinement effect is excellent comparing with that of alloys added titanium by melting Al-Ti master alloys and both alloys have the same grain refinement trend.

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TiC has a refinement to both primary and eutectic borides, some of which can act as the substrate for primary boride making refinement, the remainder inserting into the primary boride imped it growing in matrix; TiC inserting into the primary boride impedes the eutectic boride growing on the primary boride and decreases the formation of large block eutectic boride.

TiC對初生硼化物和共晶硼化物均有細(xì)化作用：一部分作為初生硼化物異質(zhì)形核核心使其細(xì)化，另一部分在基體中嵌入初生硼化物阻礙其生長亚洲一区精品中文字幕；嵌入初生硼化物的TiC改變了共晶硼化物依附初生硼化物的特點激情电影激情小说激情图片，使共晶硼化物分布細(xì)小均勻。

Meanwhile, the experiments show that the approximate global minimum partition of the coarsest graph may be the local minimum partition of the finest graph and we need to strengthen the global search ability of refinement algorithm in the refinement phase.

同時實驗數(shù)據(jù)也反映了在最小圖上的全局近似最優(yōu)剖分可能是初始圖的局部最優(yōu)剖分日韩成人网址播放视频在线观看免费，需要加強多水平優(yōu)化階段的遷移優(yōu)化算法逃離局部最優(yōu)的能力99爱性网。