基准点最优几何分布的初探

本文从某GPS平面控制网出发,对三组具有代表性的点位组合用TGO软件进行静态数据处理。通过分析比较,得到了基准点的最优几何位置分布。     

PVC型材模具的优化设计与制造分析

模具设计与制造是决定PVC塑料型材质量的关键因素,本文就模具设计的参数调整及结构的优化与制造进行了初步分析。     

知识产权保护的双重效应与区域经济增长

本文利用我国2000—2009年30个省市区的面板数据,运用静态和动态面板数据模型,研究了知识产权保护对我国区域经济增长的影响。提出我国应根据区域经济发展不平衡的实际,采取宽严适度的知识产权保护政策措施。     

我国高校自主招生的制度选择

高校自主招生改革试点的推行,是对我国高校招生考试制度的补充与完善,也是与国际高校招生考试制度接轨的一项重要举措.在这几年的改革试点进程中,高校自主招生虽取得了不小的成绩,但也存在一些不易解决的问题.我们要使高校自主招生改革试点工作顺利健康地开展下去,就必须深入探讨阻碍我国高校自主招生健康运行的制约因素.     

科学发展观视角下民族地区经济社会发展的途径选择——以武陵地区为例

科学发展观是指导少数民族地区经济社会发展的基本原则。武陵地区要加快经济社会发展,必须从科学发展观的视角下实现政策重构,并根据区域特色资源进行特色主导产业选择。     

Optimization on bicriterion policies for M/G/1 system with second optional service

We compare the optimal operating cost of the two bicriterion policies, 〈p,T〉 and 〈p,N〉, for an M/G/1 queueing system with second optional service, in which the length of the vacation period is randomly controlled either by the number of arrivals during the idle period or by a timer. After all the customers are served in the queue exhaustively, the server immediately takes a vacation and may operate 〈p,T〉 policy or 〈p,N〉 policy. For the two bicriterion policies, the total average cost function per unit time is developed to search the optimal stationary operating policies at a minimum cost. Based upon the optimal cost the explicit forms for joint optimum threshold values of （p,T） and （p,N） are obtained.     

Multi-objective optimization of water supply network rehabilitation with non-dominated sorting Genetic Algorithm-Ⅱ

Through the transformation of hydraulic constraints into the objective functions associated with a water supply network rehabilitation problem, a non-dominated sorting Genetic Aigorithm-Ⅱ (NSGA-Ⅱ) can be used to solve the altered multi-objective optimization model. The introduction of NSGA-Ⅱ into water supply network optimal rehabilitation problem solves the conflict between one fitness value of standard genetic algorithm (SGA) and multi-objectives of rehabilitation problem. And the uncertainties brought by using weight coefficients or punish functions in conventional methods are controlled. And also by introduction of artificial inducement mutation (AIM) operation, the convergence speed of population is accelerated; this operation not only improves the convergence speed, but also improves the rationality and feasibility of solutions.     

Multi-objective optimization of water supply network rehabilitation with non-dominated sorting Genetic Algorithm-II

Through the transformation of hydraulic constraints into the objective functions associated with a water supply network rehabilitation problem, a non-dominated sorting Genetic Algorithm-II （NSGA-II） can be used to solve the altered multi-objective optimization model. The introduction of NSGA-II into water supply network optimal rehabilitation problem solves the conflict between one fitness value of standard genetic algorithm （SGA） and multi-objectives of rehabilitation problem. And the uncertainties brought by using weight coefficients or punish functions in conventional methods are controlled. And also by in- troduction of artificial inducement mutation （AIM） operation, the convergence speed of population is accelerated; this operation not only improves the convergence speed, but also improves the rationality and feasibility of solutions.     

莫言小说词语修辞:选择、变异

莫言是新时期最杰出的先锋作家之一,也是语言本体意识很强的作家。在词语修辞上,他既遵从语言的既有秩序又不断超越语言规范,一方面他注重选择有声有色的词语,给人以听觉、视觉上的享受;另一方面,当词语进入语境后,为获取超乎寻常的表达效果,莫言又使其在语义、语形两个层面都发生不同程度的变异。     

标点符号在英语单项填空题设计中的运用

标点符号是书面语中意义表达的重要手段,在语言测试中也起着非常关键的作用。本文通过具体实例(主要来源于NMET)阐述了如何将标点符号用于英语单项填空题设计中。