查询词典 methods

FR conjugate gradient methods with perturbations are proposed. The global convergence property of the first method is proved under the condition of main directions' sufficient descent. Whereas, in the proof of the convergence for the other two methods, we only need main directions' descent. Importantly and quite interesting, boundedness conditions such as objective function being bounded below, boundedness of level set are not needed. Chapter 5 presents a version of Dai-Yuan conjugate gradient method with perturbations.

在主方向充分下降的条件下证明了第一个方法的全局收敛性，而后两个方法的收敛性是在主方向下降的条件下证明的，这些收敛性证明的一个共同特征就是不需要目标函数有下界或水平集有界等有界性条件，第5章采用Wolfe或Armijo步长规则提出了带扰动项的Dai-Yuanabbr。

For the above problem, two heuristic methods and a hybrid optimal algorithm that incorporates the branch and bound method with active schedule constru〓n algorithm are presented Computational results show the effectiveness of these methods.

对上述问题，给出了两个启发式方法和一个将分支定界法和活动调度构造算法相结合的混合最优算法。

Although departed methods such as dynamic programming, integer programming, and branch bound method can solve small scale problems, the rise in execution time of these methods is exponential with the number of generating units.

虽然在以往的研究中，已有许多方法使用在此问题上，例如动态规划法、整数规划法及支界法等，但是由於这些方法所需的求解时间会随机组数的增加呈指数关系成长，因此都比较适合於小规模系统上使用。

Methods 60 patients with newly diagnosed ITP, their serum TPO concentration were detected by double-antibody sandwich enzyme-linked immunosorbent assay; and the bone Marrow megakaryocytes were recorded; HP was detected by 14C urea breath test. The control group of 40 cases was also detected by above methods.

60例初治ITP患者，在接收治疗前采用双抗体夹心酶联免疫吸附法检测血清TPO水平，计数骨髓涂片的平均巨核细胞数量，用14C尿素呼气试验检测患者HP感染情况。

The methods can be extended to various energies of electron beam and different teletherapy methods, and the results can be used to make predictions about bremsstrahlung dosage in different treatments.

发现电子射程内的制动辐射约为给予剂量的1-1.5%，在电子射程外的制动辐射为给予剂量的0.1-1%。

In order to provide scientific basis and methods for study of walnut seedlings rapid propagation,survival ratio,scion's growth and efficiency of grafting were investigated and determined,efficiency of the new grafting method of walnut that it is single bud green branch grafting compared with efficiency of traditional grafting methods bud grafting and shield budding.

为给核桃优质苗木的快速繁育研究提供科学的依据和方法，就核桃嫁接的成活率、接穗的高生长、接穗的粗生长和嫁接的工作效率进行了调查和观测，比较分析了核桃嫁接新方法——单芽绿枝接与传统嫁接方法——"工"形芽接和嵌芽接的嫁接效果。

Methods The experimental TBI model was established by bumpiness of free falling body according to Feeney′s.The rats′cerebral edema were imaged with magnetic resonance image,The changes of brain water content and permeability of blood-brain barrier were measured by the methods of wet and dry weight and Evans blue fluorometry.The expression of AQP-4 mRNA was examined by reverse transcriptase polymerase chain reaction.

按照改进的Feeney自由落体撞击法建立大鼠创伤性脑损伤模型，用磁共振成像对大鼠脑水肿进行检测，干/湿比重法和伊文思蓝测定法观察大鼠TBI后不同时相脑组织含水量和BBB通透性的变化，并采用逆转录聚合酶链反应法检测AQP-4 mRNA的表达，蛋白质免疫印迹法检测AQP-4蛋白的表达。

The positioning error for cableway and theodolite methods is derived and analyzed in detail and the methods for reducing positioning error are pointed out .

本文对断面索法和经纬仪测角交会法的定位误差进行了较详细的推导和分析，并指明了减小定位误差的途径。

Parameter technology and variable technology are two main methods for improving the efficiency of feature-based modeling system. Two methods has been very important in most CAID systems.

参数化技术和变量化技术是提高特征造型系统设计效率的两种主要方法，基于特征的参数化技术和变量化技术已成为当今CAID系统的主要依赖手段。

Chapter 7 considers application of variation methods to systems with infinite degrees of freedom, and Chapter 8 deals with direct methods in the calculus of variations.

第7章认为，变异的系统方法的应用与自由无限度，和第8章在变分法直接的方法处理。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。