对于岩土工程勘察中的技术问题与措施探究

本文针对岩土勘察工程技术上近几年频繁出现的问题进行了分析与探讨,并提出应对的措施和方法,希望为以后的勘探工作做好基础和预防。     

建筑电气工程常见问题分析

本文对建筑工程中的电气工程进行了分析,并针对设计阶段和施工阶段的常见问题提出了相应的解决对策。     

Optimization of casting process based on the theory of inventive problem solving

Optimization of casting process involves the adjustment of parameters as well as the improvement of process schemes and measures. This paper proposes a new method based on the Theory of Inventive Problem Solving (TRIZ) for casting process optimization, and realizes the idea of applying TRIZ to optimize the casting process of a magnesium alloy intake manifold. By this method, the casting process is optimized so as to remove the shrinkage pores. The successful optimization of casting process demonstrates the feasibility of the proposed method.     

The Selective Fixing Algorithm for the closest string problem

A hybrid heuristic algorithm based on integer linear programming is proposed for the closest string problem (CSP). The algorithm takes a rough feasible solution in input and iteratively selects variables to be fixed at their initial value until the number of free variables is small enough for the remaining problem to be solved to optimality by an ILP solver. The new solution can then be used as input for another iteration of the algorithm and this approach is repeated a predefined number of times. The procedure is denoted as Selective Fixing Algorithm (SFA). SFA has first been tested on standard instances available from the literature, which is denoted as rectangular having string length larger than the number of strings. Then, this approach has also been tested on the so-called square instances (having string length equal to the number of strings) and rectangular inverse instances (having string length smaller than the number of strings). Computational experiments indicate that SFA globally outperforms the state-of-the-art heuristics.     

探讨绿色生态住宅小区的规划设计问题

绿色生态住宅小区主要是在尊重生态性的基础上，通过设计手法上的创新，塑造出自然生态的居住环境。本文就对绿色生态住宅小区的规划设计问题进行了分析与论述。     

Variable neighbourhood simulated annealing algorithm for capacitated vehicle routing problems

This article presents the variable neighbourhood simulated annealing (VNSA) algorithm, a variant of the variable neighbourhood search (VNS) combined with simulated annealing (SA), for efficiently solving capacitated vehicle routing problems (CVRPs). In the new algorithm, the deterministic ‘Move or not’ criterion of the original VNS algorithm regarding the incumbent replacement is replaced by an SA probability, and the neighbourhood shifting of the original VNS (from near to far by k← k+1) is replaced by a neighbourhood shaking procedure following a specified rule. The geographical neighbourhood structure is introduced in constructing the neighbourhood structures for the CVRP of the string model. The proposed algorithm is tested against 39 well-known benchmark CVRP instances of different scales (small/middle, large, very large). The results show that the VNSA algorithm outperforms most existing algorithms in terms of computational effectiveness and efficiency, showing good performance in solving large and very large CVRPs.     

论加强水工工程建筑质量策略

目前,我国的水利事业呈现出稳定健康的发展态势。因此,为了提高水工建设工程的社会效益和经济效益,必须重视水工建设的施工质量。本文通过分析水工工程中常见的质量问题、主要成因,提出了相应的施工和管理措施,以供同行借鉴。     

试论民用建筑施工中质量通病及解决措施

随着社会快速发展和经济空前繁荣,居民的生活水平产生了很大的提高,人们更加关注居住的环境。因此,民用建筑质量的通病成为了建筑工程建设中的一个突出问题。     

一维波动方程Dirichlet问题解的结构

提出了一类常见一维波动方程Dirichlet问题解的结构，从而得到该问题的简捷算法。     

朔州市民众环保意识及环保行为调查分析

针对朔州市民众环保意识及环保行为进行了调查分析，通过采用面对面、合作单位组织派发问卷的调查方式，总结得出了朔州目前所面临的主要环境问题及民众的态度和看法，在此基础上，对政府提出了相应建议，以期改善朔州市环境质量。