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Based on this, a new WENO difference scheme which based on Dispersion-Relation-Preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics problems has been implemented and compared in order to test capability of wave capturing; In addition, WENO schemes generally do not converge at high order in the presence of contact discontinuity of Euler equations, so a conservative front tracking technique coupling WENO schemes and Level Set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy.
本文研究了高阶精度加权基本无振荡格式及其在双曲守恒律方程中的应用,在此基础上作了两个方面的工作:一是针对高频声波问题构造出一种基于保色散关系的WENO有限差分格式,并对计算气动声学问题的代表性算例进行了大量数值实验,比较了该格式捕捉波数的能力;另外,针对高阶WENO格式在处理Euler方程的接触间断时精度有所降低的问题,研究了利用界面追踪技术Level Set方法和高阶激波捕捉WENO格式相结合的一种守恒追踪方法,并且给出有代表性的密度滑移面问题的算例,得到一致高阶精度的数值模拟结果。
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Results Same conservative sites and key catalytic sites existed among SjLDH and LDHs from other species. Similarity of SjLDH compared to CsLDH, TvLDH and HsLDH was 75%, 17%, 58%-60% respectively. Phylogenetic analysis demonstrated that the evolution relation between SjLDH and DmLDH was closer than the relation between SjLDH and CeLDH, the relationship between SjLDH and HsLDH-B,-C was closer than HsLDH-A. Three trans-membrane regions were found, the region of 98aa-106aa in three hydrophilia regions located outside of membrane was inferred as the major antigen epitope. This antigen epitope had significant difference with LDHs from protozoon ( Pf ., Tg ., Tv .) and had 1-3 amino acid residue difference with MmLDH, HsLDH-A,-B,-C, and was the same with CsLDH. One of the key catalytic residues and substrate binding loop were located in this region. Tertiary structure demonstrated that 98aa-106aa was on the surface of the protein and formed a substrate binding loop, other two key catalytic sites were at the position near the loop.
结果 SjLDH与其他物种的同源序列含相同的保守位点及催化活性位点,与华支睾吸虫LDH同源性最高为75%,与阴道毛滴虫LDH同源性最低为17%,与人LDH(HsLDH-A,-B,-C)的同源性为58%~60%; SjLDH与果蝇的进化距离较秀丽隐杆线虫为近,3种人LDH中与HsLDH-B、-C的进化距离较HsLDH-A为近;该蛋白具有3个跨膜区域,3个高亲水性区域,主要的线性表位98aa~106aa位于膜外,与原虫LDH相同区域差异显著,而与其他LDH有1~3个氨基酸的差异,关键催化位点之一及底物丙酮酸结合区域位于该区域,蛋白质同源模建分析表明该区域位于蛋白表面形成环状结构,3个关键催化位点位于该区域或在其附近。
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With the help of some investigation data about the research area before the project ,this article describes some distinctions about the Rushan Bay's sedimentation power in such ways .First of all ,it mainly uses tidal current power as well as wave power to analyse sediment condition in research area .The contents contain :the relation between distribution of sediment and hydrodynamic elements; sediment discharge of unit width and longshore sediment transport ,analysis of sediment transport tendency ;comparison of sea chart in different time with AutoCAD、Suffer、VB tools, analysis of erosion and siltation ;description of marine physiognomy and its relation with hydrodynamic elements .
本文通过工程建设前期的有关调查资料,采用如下方法对乳山湾的沉积动力特征进行研究:首先,文章以潮流动力为主,结合波浪动力对研究区的泥沙状况进行了分析,分析内容包括:沉积物平面分布及其与水动力因素关系;口门附近水下动力地貌分析,揭示其形成与水动力因素的关系;通过单宽输沙、沿岸输沙计算,对泥沙运移趋势进行分析;利用AutoCAD、Suffer、VB等工具,采用海图水深值对比的方法,分析乳山湾海底蚀淤状况。
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Based on a lot of experiments, it shows the distinct error between classical theory curve which express the relation of cell diameter, cell density and foam tensile strength , tensibility tensile product and re-spring degree and experiment curve. It also can't explain the relation of hole degree , area of cell wall with above four mechanics parameter. But the sub-cluster scale theory was demonstrated successfully to explain the relation of cell structure and foam mechanics property on different mold temperature, mold pressure, mold period and different chemical blowing agent, blowing activator content.
通过大量的实验结果理论分析表明:以往的经典理论存在着很多不足之处,它不能有效地解释孔径、泡孔密度与抗拉强度、断裂伸长率、断裂功、及回弹率之间的理论曲线与实验曲线之间的偏差,也不能解释空隙度、泡孔壁厚与上面四者之间的关系,而群子标度理论则成功地论证了在不同模压温度、模压压力、模压时间及不同用量发泡剂、发泡促进剂条件下泡体力学性能与结构之间的相关性。
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But Baumol has not reckoned with my contention that, all microeconomic price details aside, when we properly transform from rate-of-surplus-value accounting regime to actual rate-of-competitive-profit regime, we take an eraser and replace the a0-1(1+r*) m=1 relation that defines "the rate of surplusvalue, r*" by the alternative relation a0(1+R*)[I-a(1+R*)]-1 m=1 that defines the "competitive rate of profit, R*;" and literally nothing in the way of understanding of the latter's actual distribution relation is "revealed," is "uncovered" or is "laid bare" by the pre-eraser detouring.
但是鲍莫尔没有考虑到我的这一观点,将所有微观经济价格细节放在一边,当我们适当的将剩余价值率清算体制转化为实际的竞争利润率体制,我们就拿出一块橡皮并将a0-1(1+r*)m=1这一关系式替换成a0(1+R*)[I-a(1+R*)]-1m=1这一关系式,在关于后者的实际的分配关系的理解上,字面上没有任何东西被预先擦掉的弯路&揭示&、&揭露&或&暴露&出来。
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On the background of city and country space, on the basis of the ecosystem relations and plan theory (such as societal or economical sense theory), the concepts of city and country eco-planning in this thesis emphasized on the space planning combinated nature ecosystem. It was redound the relation between construction and entironment to be more harmonious on the background of market economy. The theory starts with the relation between development and environment. It applied itself to scheme the land and space resources with eco-cyb emetics.
论文中提出的城乡空间生态规划理论就是以城市与乡村整体空间为背景,以各种城乡生态关系为依据,在经济理性、社会理性等各种规划理论的基础上,强调物质空间建设与自然生态协同发展的空间规划,以期达到在以市场经济为主导的背景下更好地实现城乡建设与生态环境和谐的目的;是从城乡互动过程角度与环境的关系等方面进行辨识,沿用生态控制等理论与手法,对城乡空间资源进行配置的理论与方法。
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Consistently devote self to the public relation activity with perfect service and the original innovative idea of pole utensil since Hillenfun being founded,for Chinese high-end middle business affairs personage provide the most luxurious life-style, whose flexible public relation participation cost is custom-made strictly according to that the high-end business affairs personage consumes a standard up to the minute in China , purpose is for let more people enjoy luxurious life different from the rest with the rightest price.
Hillenfun自成立以来,一直致力于以完善的服务和极具独到创意的公关活动,为中国的中高端商务人士提供最奢华的生活方式,其公关活动的参与费用严格按照中国中高端商务人士最新的消费水准定制,目的就是为了让更多人以最合适的价格享受与众不同的奢华生活。
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According to the engage relation of cycloidal gear with the pin wheel in type 2K V transmission,the formulas of relationship between transmission precision and mesh error of the actual profile of gears are established; then a synthesis mesh error is proposed as a quantified concourse of error to judge the transmission error,therefor the machining tolerances relative to transmission precision have quantificational relation,which is the basis for machining high precision 2K V drives with cycloidal gears.
根据 2K—V型传动中摆线轮与针轮的啮合关系,建立了实际齿廓的啮合误差与传动精度关系的计算式,并提出了综合啮合误差这一量化误差集合来评判传动误差,使得加工公差与传动精度有一个定量的关系,从而为研制开发高精度摆线齿 2K V型传动的加工制造提供了依据。
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However, it can only implement the limited operation to the spatial objects, cannot carry on transformation, index, interlink age and excavation to the spatial data, and hard integrate other information with combining map variable to set up and analysis new variable. Meanwhile, relational model in the traditional DBMS and the object- oriented modeling do not completely suit the spatial application domain. The relational model can handle topological relation well, but shows inabilities to that complicated level crossing the spatial region. Object-oriented model using software method based on the principle of the customer defined data type supports the abstract data type, especially spatial abstract data type, and possesses polymorphism and inheritances, and it can deal with topological and the layer relation, but hardly processes important continuous phenomenon in space.
GIS是当今操作有关空间信息的成熟工具和技术,但其只能对空间对象进行有限的操作,不能对空间数据进行变换、索引、链接和挖掘,难以集成其他信息来构建和分析新变量;而传统数据库管理模型中的关系模型和面向对象建模也不完全适合空间应用这一领域,关系模型能够较好地处理拓扑关系,但对表示横跨空间区域的复杂层次却无能为力;面向对象模型的软件方法支持抽象数据类型,特别是空间抽象数据类型,具有继承性和多态性,能够处理拓扑和层次关系,但难以处理空间中重要的连续性现象。
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The corresponding color weighted diagraph was setup in dependence on the inference relation of the security holes in the intruded machine. With the vulnerability-log relation matrix, we searched different forensic information source and got the corresponding support value which could help to prune the false relation between the nodes and get the remote suspicious host. Then analyzing the suspicious host in the same way.
以漏洞间推理关系为前提,从受害主机入手,构造有色加权有向图,在多日志中查找漏洞被利用的解释信息,并由查找结果对漏洞链动态剪枝,得到主机漏洞攻击链和攻击该受害主机的嫌疑主机,对嫌疑主机迭代分析,推理出网络漏洞攻击链。
- 推荐网络例句
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And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.
47:5 法老对约瑟说,你父亲和你弟兄们到你这里来了。
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Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.
提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法,同时,采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。
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Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...
嘿大乌鸦,个别谎言的事不要再-其所有的组织的谎言,在支持。