公路设计中横断面填挖工程量的计算

通过分析公路设计中 ,特别是旧路改建等特殊情况下的横断面填挖工程的计算方法 ,就编写软件过程中所遇到的主要问题提出解决办法 ,并介绍了“扎方”

PPP项目建筑工程管理、施工质量及成本控制探讨

Taking the construction of PPP project of Guangzhou North Railway Station Comprehensive Transportation Hub as an example,the related measures of construction project quality management and cost control are discussed in detail,and it is hoped to have reference.

橡胶沥青应力吸收层施工的常见问题及管控提升措施

对龙岩地区橡胶沥青应力吸收层施工进行过程量控,跟踪某项目的橡胶沥青应力吸收层施工全过程,发现质量管控环节存在的不足,分析问题成因并制定管控提升的措施,从而保证关键环节的施工质量。

Novel Control Vector Parameterization Method with Differential Evolution Algorithm and Its Application in Dynamic Optimization of Chemical Processes

Two general approaches are adopted in solving dynamic optimization problems in chemical processes, namely, the analytical and numerical methods. The numerical method, which is based on heuristic algorithms, has been widely used. An approach that combines differential evolution （DE） algorithm and control vector parameteri- zation （CVP） is proposed in this paper. In the proposed CVP, control variables are approximated with polynomials based on state variables and time in the entire time interval. Region reduction strategy is used in DE to reduce the width of the search region, which improves the computing efficiency. The results of the case studies demonstrate the feasibility and efficiency of the oroposed methods.

Ubiquitous data computing and information using in a smart factory with wireless manufacturing

This study proposesan over all framework for applying wireless manufacturing(WM)technologies in a smart factory and establishes a smart factory data computing and information using system (dc-IUS). Several plug-and-play (PnP) application modules of the dc-IUS are presented in the fields of machining process and quality control,material flow and inventory control,and factory resource tracking. Different schemes are discussed about how and where to apply these functions. Then some running examples are studied to demonstrate the feasibility and reliability of dc-IUS. At last,the challenges of applying WM are discussed and a conclusion is given.

Waste Reduction in a Manufacturing Process： A Case Study of Ceramics Factory in Thailand

The objective of this research is to reduce waste in the production ceramics of Ceramics Factory in Thailand. The 7 Quality Control Tools （7 QC Tools） were implemented including Check sheet, Graph, Pareto diagram and Fishbone diagram, which were used to analyze and solve the problems. It was found that most of the wastes come from burning ceramics process. The kilns and trolleys has been used for a long time. Furthermore, the equipment and parts were damaged from lack of maintenance. The non-standard of product arrangement method into the kilns were the cause of waste. Thus, the researcher improved trolleys into the kilns and designed a fixture to help worker to product arrangement. The results of the research gathered data from quality inspection department. Then comparing data before the improvement （between September 2013 to December 2013） and after the improvement （between November 2014 to February 2015）, the wastes are reduced from 8.97% to 0.29%. The result of improving is very efficiency because it can reduce the wastes by 8.68%.

Representation of an Electrical Engineering Curriculum Using an Ontology of Controlled Quality

A curriculum is a complex system that includes a set of core competencies, objectives, contents, methodological and evaluation criteria, regulation among other things. In order to represent a curriculum as a piece of software the common tools used are databases, trees and lists of courses. However, none of these tools can capture the deep and complex relationships among the elements of a curriculum. To avoid this problem, a more complete representation of an engineering curriculum using ontologies has been developed. This paper presents the construction of an ontology for undergraduate electrical engineering curriculum domain at Universidad Nacional de Colombia, which aims to represent, organize, formalize and standardize the knowledge of this domain, so that it can be shared and reused by different groups of people in the field of education and engineering. The ontology includes four curriculum aspects： knowledge in electrical engineering, skills in engineering, electrical engineering curriculum and regulation. For the ontology development, Methontology was selected as methodology and Protege as implementation tool. In addition, there is a proposal of documentation for this methodology, based on principles of quality management systems. This ontology is designed in order to be used in any field of engineering.

Study on Quality Control of Architectural Decoration Engineering

The article analysis of construction surface decoration quality, construction interior wall decoration quality, the construction of exterior wall tile adhesive quality and construction of aluminium alloy exterior quality problems, and points out the corresponding prevention measures on the problem. Finally, for wall cracks, the paper put forward the improvement measures.

Thinking substation construction project management methods

One of the most important tasks of security is the quality of the project substation substation construction project management, construction project management, including project bidding and engineering, electrical engineering and civil construction, engineering, quality control, safety management and supervision costs control, on-site supervision over the links, these links chain, indivisible, so long as a part of the management problems, will lead the entire construction project management effectiveness be affected, so it must be every link control and management work done, in order to guarantee the quality of the entire substation, in order to make security of supply substations, electrical safety and vital interests of users are protected. In this paper, the author details the three aspects substation construction management of the project, namely the concept of substation engineering, project management and construction safety, through these three aspects, the author analyzes the construction project management substation existing problems, To solve these problems and issues proposed some measures and construction process that need attention. It launched separately from the design, schedule, quality and other aspects of security and research, and in the course of the study stressed the importance of coordination between elements of construction and construction sectors as well as cooperation between the construction, explains the importance of the project cost control.

Structure and quality controlled growth of InAs nanowires through catalyst engineering

In this study, the structure and quality controlled growth of InAs nanowires using Au catalysts in a molecular beam epitaxy reactor is presented. By tuning the indium concentration in the catalyst, defect-free wurtzite structure and defect-free zinc blende structure InAs nanowires can be induced. It is found that these defect-free zinc blende structure InAs nanowires grow along 〈110〉 directions with four low-energy {111} and two {110} side-wall facets and adopt the （111） catalyst/nanowire interface. Our structural and chemical characterization and calculations identify the existence of a catalyst supersaturation threshold for the InAs nanowire growth. When the In concentration in the catalyst is sufficiently high, defect-free zinc blende structure InAs nanowires can be induced. This study provides an insight into the manipulation of crystal structure and structure quality of III-V semiconductor nanowires through catalyst engineering.

Quality-control method for the determination of biological activity of engineered calcineurin subunit B

The aim of this study was to establish a quality-control method for calcineurin subunit B(CNB) biological activity determinations. CNB enhances the p-nitrophenylphosphate(p NPP) dephosphorylating activity of calcineurin subunit A Δ316 mutant(CNAΔ316). A series of CNB concentrations were fitted to a four-parameter equation to calculate the corresponding p NPP maximum dephosphorylation rates. Values were calculated based on biological activity references using a parallel line method. The method was then validated for accuracy, precision, linearity, linear range, sensitivity, specificity, and robustness. The recovery results were greater than 98%. Intra-plate precision was 6.7%, with inter-plate precision of 10.8%. The coefficient of determination was greater than 0.98. The linear range was 0.05–50 μg m L?1, with sensitivity of 50 μg m L?1. Tested cytokines did not induce CNAΔ316 dephosphorylation of p NPP. The chosen CNAΔ316 concentration range did not affect activity determinations.