查询词典 role model

The mechanical property testing shows that the seamless PLLA tubes perform excellent radial strength,which indicates that the mechanical properties of biodegradable stents made of these tubes was supposed to be excellent.PLLA and its composites were first used in preparing seamless tubes as antecedency of laser-cut biodegradable coronary stents in china.Finite element analyses of the biodegradable coronary stent model indicate the explorative design basically meets the requirement of reasonable and applicable stents.There is not such kind of research yet in domestic.Optimum laser-cuttting parameters of CO2 laser was cauculated based on experiential formula,within it,biodegradable coronary stents,especially those with complex structure would be manufacutured from seamless tubes quickly by laser microprocessing with high consistency to the design model.The processing efficiency of the CO2 laser demonstrated in experiential formula by us will play an important guiding role in manufacturing biodegradable stents by laser-processing.Our stents that ascribed to laser-cutted,slotted tube stent are proved to be biodegradable, self-expandable and good biocompatible,basically reach the international level on the aspest of manufacturing procedures and design.

研究结果表明：壳聚糖改性材料综合性能优于纯PLLA，更适合于作为可降解冠脉支架的原材料；自主设计的探索性自膨胀管状闭环型可降解冠脉支架的性能符合冠脉设计要求，设计、验证生物可降解冠脉支架模型的研究在国内还未见报道；制备的改性PLLA无缝管的力学性能优越，可通过激光切割获得冠脉支架，这是国内首次采用聚乳酸材料来制备通过激光加工出可降解冠脉支架的无缝管；二氧化碳激光器加工精度能达到加工要求，加工出来的血管支架名义设计与实测值误差小，实现了冠脉支架、尤其是带有复杂外观设计冠脉支架的快速化、规范化加工，对二氧化碳激光器加工聚乳酸材料的效果研究在国内外属于首创，获得的经验公式对日后的深入研究有重要的指导意义；制备的支架为激光切割管状闭环型冠脉支架，支架外观设计、支架加工手段、支架的性能都基本接近国际水平，支架样品符合设计的理念，可以实现自膨胀功能。

Human capital investment theory plays a momentous role in personal wage determination. According to Mincer's eminent model (1968), schooling and work experience are two main essentials of wage determination. Although Mincer's model is generally applied, it is rare to be used in a specific group.

中文摘要个人薪资与人力资本投资息息相关，根据Mincer（1968）的薪资方程式，教育与工作经验是影响薪资的主要因素，虽然其模型之后被广泛地使用，但却较少应用在某个特定群体的研究。

In this dissertation, we construct the Bariev model with nine kinds of boundary fields by the matrices K_± defining the boundaries. And then the Lax operator is given in the form ofmatrix, as well as the basic quantities, e.g., the R -matrix, the monodromy matrices and the transfer matrices are defined. By using the expression of the local Lax operator of the model,the action of the monodromy matrices T, T~(-1), U_ on the pseudo-vacuum state is given outin detail. Furthermore, the main fundamental commutation relations are obtained through the reflection equations, the recursive n-particle state as well as the one-particle exact solution is given and the Bethe ansatz equations are found accordingly. Finally, we list the nesting boundary K matrices, which play a crucial role for obtaining the n-particle solution and finding the Bethe ansatz equations, the eigenvalues of the transfer matrices and the energy spectrum of the system by means of the nested algebraic Bethe ansatz method.

在这篇文章中，我们利用边界K_±矩阵构造出了具有九种边界场的Bariev模型，同时给出了该模型L算子的具体矩阵表示形式，并定义了R矩阵，monodromy矩阵以及转移矩阵；接着利用L算子的矩阵形式，给出了其对应monodromy矩阵T、逆矩阵T~(-1)作用到真空态上的值，并利用Yang-Baxter关系及反射方程得到了双行monodromy矩阵U作用到真空态上的值；然后利用反射方程通过复杂的计算得到了一系列重要的基本对易关系式，并给出了模型的递推的多粒子波函数、单粒子解及Bethe ansat方程；最后给出了模型的嵌套的边界K矩阵的具体形式，从而为运用嵌套Bethe ansatz方法求解该模型的多粒子解、Bethe ansatz方程以及系统的能谱打下了很好的基础。

Arithmetic Analysis of Geocentric Vector Based on Earth Sensor for Spheral Model and Oblate Model;2. The accuracy of the measurements of the geocentric vector plays a key role in satellite navigation,but it is affected by the earth oblateness.

卫星利用紫外敏感器和星敏感器进行自主导航的方法中地心矢量的测量精度是影响导航精度的重要因素之一，而地心矢量的测量又受到地球扁率的影响。

Unlike the existing literature which uses only the sample of workers in studying, the incidence of overeducation, this thesis further takes into account the role of non-workers and compares the results estimated by both the Probit Model and Probit Model with Sample Selection.

另外有别於过去在讨论个人发生超额教育机率议题的文献，其皆只采用有工作者样本，在此本文兹将无工作者样本纳入考量，并利用考虑与未考虑样本选择 Probit模型相互比较。

The most outstanding features of this model are that it emphasizes the function of pre-existent knowledge in listening comprehension as well as the role of pre-listening and post-listening, thereby it makes up the insufficiency of the traditional model of teaching listening and improves the effect of listening teaching.

这种教学模式的最大特点是重视背景知识在听力理解中的作用，重视听前阶段和听后阶段在听力课堂教学中所起的作用，从而有效地提高听力课堂的教学效果，弥补传统教学模式的不足。

Two models have been proposed to explain molecular mechanism of Dkk's inhibition role in canonical Wnt pathway: in the first model, Dkk1 competes for binding of Wnt co-receptor LRP6; in the second model, Dkk1 can form a ternary complex with LRP6 and Kremen at the presence of Kremen, and triggers the endocytosis of this ternary complex quickly. The controversies between these two models exist during these years.

现今有两种模型分别解释Dkk抑制经典Wnt信号的分子机制：在第一种模型中，一些研究者认为Dkk1主要通过在细胞外与配体Wnt竞争受体LRP6从而抑制Wnt信号；在第二种模型中，另一些研究者们则认为在Kremen存在的情况下，Dkk1通过诱导形成Dkk1-LRP6-Kremen三元复合物，并迅速诱导这个三元复合物的内吞从而发挥抑制功能。

First, a new model, TSTG (Timed Symbolic Transition Graph) is presented along with its semantics theory. An algorithm deciding timed bisimulation is developed based upon the idea of symbolic bisimulations. Model checking algorithms has played an very important role in verifying systems.

在分析与验证算法的设计方面，在新的计算模型基础上，我们分析了实时传值进程间各种不同互模拟的特点以及判定方法；尤其针对时间互模拟，根据符号互模拟的思想，本文给出了一个时间符号迁移图上的判定算法并证明了算法的正确性。

To test the hypothesis that concentration polarization of atherogenic lipids may occur in the arterial system and play an important role in localization of atherosclerosis, we simulated and measured in vitro the luminal surface concentration of low density lipoprotein in local stenosis at the distal end of carotid artery by number simulation and laser scanning confocal microscopy, then we designed carotid stenosis model to test the role of LDL concentration polarization in atherogenesis.

低密度脂蛋白(low density lipoprotein， LDL)浓度极化可能是动脉粥样硬化局灶性的重要原因，本文以狭窄血管远心端为研究对象，探讨LDL浓度极化对动脉粥样硬化发生、发展的影响。

During the four years study on the project, we develop a dynamical forecast model that describing the subtropical ridge surface. A new theory on the role of the land-sea thermal difference on the formation of the Subtropical High is advanced. It is concluded that in the summer subtropics over each continent and its adjacent ocean LO, SE, CO, and a double-dominant heating from west to east compose a LOSECOD heating quadruplet. The influence of the Eurasia continent on SH varies according to the seasonal variation. From the ideal numerical simulation it is shown the important role of the Eaiuan continent and the huge topography on the mechanism of formation and mantanence of the SH during the summer. It is verified by the numerical simulation that the extension of the subtropical continent into the tropics greatly enhances the " East Asian monsoon". Through the Rossby energy dissipation theory it is verified that the deep latent convective heating induces the onset of the South China Sea monsoon over the Bay of Bengal. The relationship and mechanism between the precipitaiton over the East Asia and the Subtropicla high is illustrated by the data. It is also found the close phase lock between the east-west shift of the SH and the disturbence of the east wind belt over the tropical troposphere. The interaction between the structure and activity feature of the SH and the Meiyu over the Yangtze-Huaihe river valley is revealed from the data. The numerical simulation verified the impact of the different SH pattern on the path of the typhoon.

本项目的研究发展了描述副热带高压脊面变化的动力模型，提出了夏季副热带地区四叶型非绝热加热分布型及相应环流拼图的创新理论；明确了大陆尺度的海陆热力差异在副热带高压形成中的作用；指出欧亚地形对副热带高压和气候的影响随季节变化而变化，通过数值试验证明春季青藏高原的感热加热对亚洲夏季风的爆发地点起了&锚定&的作用，进一步证实了副热带高压断裂和亚洲夏季风的最早爆发地点发生在孟加拉湾东岸；利用Rossby波能量频散理论证明了孟加拉湾深对流潜热释放诱导南海季风爆发的机制；揭示了东亚季风降水的季节内变化与西太副高的关系及机理；揭示了西太副高与东西风带中扰动之间的相互作用过程，指出西太副高的东西活动与热带对流层上空东风带扰动和中纬度西风带扰动的移动和锁相密切相关；研究了夏季淮河流域梅雨期间副高结构和活动特征及其与江淮暴雨的相互作用；验证了不同副热带高压形态对台风路径的不同影响；通过数值试验证明了欧亚大陆和青藏高原等大地形对副热带高压形成和维持的重要作用。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷