The Questionnaire Analysis of Chinese Railway Survey and Design Quality Management

2011 ◽  
Vol 71-78 ◽  
pp. 4585-4589
Author(s):  
Hong Tao Xie ◽  
Fan Chen
Keyword(s):  
Influence Factors ◽  
Present Situation ◽  
Descriptive Statistics ◽  
Quality Level ◽  
Design Quality ◽  
Railway Construction ◽  
Site Design ◽  
Design Documents ◽  
Main Influence

In order to deeply understand the present situation and the main influence factors of Chinese railway survey and design market, the questionnaire investigation was conducted. The descriptive statistics analysis, frequency analysis, correlation analysis and factor analysis have been adopted in data analysis. The results show that the quality level of Chinese railway survey and design can not meet the need of railway construction. The main problems includes: dragging delivery of design documents, poor service quality of site design, inaccuracy of geological data, and inaccuracy of construction quantity. The main cause is the absence of effective incentive and constraint mechanism.

scholarly journals Multi-objective numerical simulation of geometrical characteristics of laser cladding of cobalt-based alloy based on response surface methodology

2020 ◽  
pp. 002029402094495
Author(s):  
Lu-jun Cui ◽  
Meng Zhang ◽  
Shi-Rui Guo ◽  
Yan-Long Cao ◽  
Wen-Han Zeng ◽  
...  
Keyword(s):  
Prediction Model ◽  
Response Surface ◽  
Laser Cladding ◽  
Process Parameters ◽  
Laser Power ◽  
Influence Factors ◽  
Scanning Speed ◽  
Laser Cladding Remanufacturing ◽  
Main Influence

The objectives of this study are to optimize the key process parameters of laser cladding remanufacturing parts, improve the sealing quality of the hemispherical valve and prolong and improve its service life and reliability. A high-power fiber-coupled semiconductor laser was used to fabricate a single Co-based alloy cladding layer on the pump valve material ZG45 plate. The key process parameters of laser power, scanning speed and powder feeding rate in the process of laser remanufacturing are taken as optimization variables, and the coating width, coating height, coating depth, aspect ratio and dilution rate are taken as response indexes. Based on the response surface analysis method, the central compound experiment is designed using Design-Expert software. The variance analysis of the experimental results is performed, and the regression prediction model of the process parameters relative to the corresponding index is established. Through analysis of the established perturbation diagram and three-dimensional response surface, it is concluded that the main influence factors of melting width and penetration depth are laser power and positive effect, and the main influence factors of melting height are scanning speed and negative effect. The average error of each regression prediction model is lower than 10%. The above research work has important guiding significance for optimizing the process parameters and improving the cladding quality of cobalt-based alloy on ZG45.

Improving the Qualified Rate of Flux Test about Scavenging Pump in Aeroengine by Applying Six Sigma Methodology

2010 ◽  
Vol 26-28 ◽  
pp. 289-292
Author(s):  
Yang Hua Cao ◽  
Xiu Cui Kang
Keyword(s):  
Six Sigma ◽  
Influence Factors ◽  
Assembly Quality ◽  
Low Level ◽  
Long Time ◽  
Improvement Measures ◽  
Six Sigma Methodology ◽  
The One ◽  
Main Influence

The qualified rate of flux test is decided mainly by the assembly parameters, but for some reasons, the qualified rate especially the one-turn qualified rate had been on a low level for a long time. By applying 6σ methodology, this paper analyzed the influence factors about the flux test and found out the main influence factors firstly; then on base of these analysis results, this paper proposed some improvement measures; finally, this paper validated the effects of these improvement measures by carrying out some tests. The improvement measures proposed in this paper had improved the assembly quality of scavenging pump obviously.

Change Law Research and Characteristic Analysis of Urban Pavement Runoff Pollution

2012 ◽  
Vol 518-523 ◽  
pp. 2418-2422
Author(s):  
Gui Xia Ji ◽  
Chun Lei Xu ◽  
Huan Zhang ◽  
Da Wei Si ◽  
Yi Cheng Lu
Keyword(s):  
Water Quality ◽  
Influence Factors ◽  
Pollution Index ◽  
Suspended Solid ◽  
Characteristic Analysis ◽  
Runoff Water ◽  
Exponential Change ◽  
The University ◽  
Main Influence

Through the pavement runoff monitoring of USST（the University of Shanghai for Science and Technology） courtyard pavement runoff and JunGong road runoff, the analysis of main influence factors and pollution degree, this article indicate that underling surface, rainfall duration, rainfall intensity and rainfall are important influencing factors of initial runoff water quality. Organic and suspended solid are the main pollutants of urban runoff. COD, SS and turbidity are the main pollution index, and they present exponential change law and finally achieved stability along with the delay of rainfall. The more heavily it rains, the more quickly water quality become stabilization. Stable water quality are influenced by rainfall character and pavement character. The more heavily it rains, the better stable water quality is. The more dust pavement contain, the worse stable water quality is. Stable water quality of courtyard pavement runoff are better than street runoff.

scholarly journals "Pengaruh PO (Penilaian Objektif) Pembimbing Dan PO (Penilaian Objektif) Penguji Terhadap Kualitas Kelulusan Mahasiswa Pada Perguruan Tinggi Raharja"

CICES ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 61-69
Author(s):  
Ageng Setiani Rafika ◽  
Ki Ahmad Saputro ◽  
Riyan Nova Saputra
Keyword(s):  
Graduate Students ◽  
Objective Assessment ◽  
Poor Quality ◽  
Descriptive Statistics ◽  
Survey Method ◽  
Student Discipline ◽  
Quality Level ◽  
Sample Collection ◽  
The World

Currently, many graduate students who can’t be absorbed by the world of work or labor market because of poor quality. It is caused by several factors such as students as learners, lecturer as a teacher, and the campus as a connector between the institution or any of its faculty and students to students and faculty facilities. The purpose of this study was to determine the effect of student discipline in implementing the guidance of the thesis as well as to determine the influence of PO coach and PO testers on the level of quality of graduation. This study uses a quantitative approach with descriptive correlational survey method. The sample collection technique is based on the calculation formula Slovin as many as 61 people. Data was collected using questionnaires and documentation. Analyzed using descriptive statistics and statistical analysis iferensial. Data processing using SPSS. Results of the study showed that the better the level of completion of Objective Assessment Supervisor, the better the quality level graduation because the value received will better the automatic IPK and also rose. However, the better the level of completion of Objective Assessment Examiners, will not affect the level of quality of the graduation.

Study on Influence and Evaluation of Coal Mining on Envionment

2012 ◽  
Vol 433-440 ◽  
pp. 1428-1432
Author(s):  
Jia Yong Zhang ◽  
Xue Min Gong ◽  
Li Wen Guo
Keyword(s):  
Coal Mining ◽  
Evaluation Method ◽  
Influence Factors ◽  
Mining Area ◽  
Evaluation Index System ◽  
Quality Level ◽  
Environment Quality ◽  
Green Development ◽  
Fuzzy Synthesis Evaluation

Through the synthetically analysis of the characteristics of coal mining and the environment quality of the mining area, the environment quality evaluation index system is formed: water and soil environment quality are the principal layer, the influence factors are measure layer. The evaluation degree of every factor is defined by fuzzy synthesis evaluation method and the environment quality level and the problem urgently to result are found, which provides theory support for environmental protection and green development.

Reliability Control of Quality of Reinforced Concrete Structure during Construction

2012 ◽  
Vol 594-597 ◽  
pp. 761-765
Author(s):  
Jian Ping Wang ◽  
Xiang Yu Zhao ◽  
Cheng Lin Li
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
Influence Factors ◽  
Processing Method ◽  
Control Measures ◽  
Reinforced Concrete Structure ◽  
Construction Quality ◽  
Reliability Control ◽  
Main Influence

The reliability control of reinforced concrete structure during construction is important for ensuring the safety of the structure. The paper puts forth the main influence factors of construction quality and the control measures of these factors through the discussion of reliability control of construction quality, and given the processing method of quality defects of reinforced concrete structure during construction.

Research on Dynamic Optimization Principles for Forklift Truck Mast

2014 ◽  
Vol 556-562 ◽  
pp. 1147-1150
Author(s):  
Ke Jun Zhang ◽  
Jian Chen
Keyword(s):  
Dynamic Optimization ◽  
Optimization Design ◽  
Dynamic Performance ◽  
Influence Factors ◽  
Design Principles ◽  
Design Quality ◽  
Improve Design ◽  
Forklift Truck ◽  
Simulation Results

In order to improve the effect of dynamic optimization design for forklift truck mast,the influence factors of dynamic performance for forklift truck mast were analyzed. Combining the actual characteristics of the forklift truck mast, considering the influence factors of dynamic performance for forklift truck mast, seven dynamic optimization design principles for forklift truck mast were proposed. According to the dynamic optimization design principles for forklift truck mast, the 2.5 ton forklift truck mast was designed and analyzed. The simulation results show that forklift truck mast which was optimized has good dynamic performance. The dynamic optimization principles which were proposed can improve design quality of forklift truck mast.

THE IMPLEMENTATION OF ISO 9001:2015 TO IMPROVE QUALITY OF SERVICE AT PUSAT KESIHATAN UNIVERSITI (PKU), UNIVERSITI UTARA MALAYSIA(UUM)

2018 ◽  
Vol 13 (Number 2) ◽  
pp. 67-77
Author(s):  
Anis Syamimi Abd Rahim ◽  
Mohd Norhasni Mohd Asaad
Keyword(s):  
Quality Of Service ◽  
Customer Satisfaction ◽  
Descriptive Statistics ◽  
Iso 9001 ◽  
Quality Of Services ◽  
Research Questions ◽  
Spss Software ◽  
The Relationship ◽  
Universiti Utara Malaysia

The purpose of this study is to review the implementation of ISO 9001:2015 in order to improve the quality of services at Pusat Kesihatan Universiti (PKU), Universiti Utara Malaysia. The respondents of this study were customers at the PKU, UUM. The questionnaire was distributed to 50 respondents. The data were analyzed using SPSS software version 24. The data were tested using descriptive statistics, and correlation analysis to answer the research questions and to achieve the objectives. The findings show that customers agree that implementation of ISO 9001:2015 give service at PKU, UUM is good and satisfied. Through the correlation test, the results showed that the relationship between the implementation of ISO 9001:2015 has a positive and significant impact on customer satisfaction and the effect of implementing ISO 9001:2015 has a positive and significant impact in improving quality of service at PKU, UUM.Through mean and standard deviation tests, results show that tangible dimensions are the main dimensions of customer satisfaction while dimensions with low values are dimensions of responsiveness.Therefore, all aspects of service in PKU, UUM will be strengthened and all aspects of the weaknesses could be addressed to improve the service in order to maintain good quality services.

Quality of Governance at the Communal Level in Poland: an Exploratory Study of the Worst Performer Case From the Opolskie Province

2020 ◽  
Vol 21 (1) ◽  
pp. 22-55
Author(s):  
Bartosz Czepil
Keyword(s):  
Exploratory Study ◽  
Quality Index ◽  
Extreme Case ◽  
Quality Level ◽  
Case Method ◽  
Major Conclusion ◽  
Second Stage ◽  
Quality Of Governance ◽  
Governance Quality

The objective of this paper is an attempt to explain the determinants of the lowest governance quality level in one of the communes of the Opolskie Province, Poland. The first stage of the research consisted in developing a commune-level governance quality index in order to measure the quality of governance in the 60 communes of the Opolskie Province. Subsequently, the commune with the lowest score in the index was qualified for the second stage of the research which was based on the extreme case method. The major conclusion from the research is that the commune leader's governance style which allowed him to hold on to power for many terms of office was responsible for generating low governance quality. Furthermore, the low quality of governance was not only the effect of the governance style but also the strategy aimed at remaining in the commune leader office for many terms.

Qualitative assessment of equipment failure cause finding and removal

2018 ◽  
pp. 116-126
Author(s):  
E. A. Vakulin ◽  
A. I. Zayats ◽  
V. A. Beklemeshev ◽  
V. A. Ivashkevich ◽  
V. A. Khazhiev ◽  
...  
Keyword(s):  
Production Condition ◽  
Real Life ◽  
Open Pit Mine ◽  
Qualitative Assessment ◽  
Open Pit ◽  
Quality Level ◽  
Equipment Failure ◽  
Operation Conditions ◽  
Failure Investigation

Investigation of failures is one of the critical activities of mining and haulage equipment operability assurance in mining. Maintaining failure investigation at the required quality level, it is possible to identify provisions, rules and procedures that should be revised or changed, operation conditions that should be improved, additional personnel training, if required, etc. Investigation of failures in mines is under responsibility of machine men and electricians of maintenance and operation services. In reality, factory management and setup for production condition weak concernment of these workers in quality investigation aimed at finding of sources of equipment failures. This article describes real-life results achieved in development and use of maintenance service operation, technology and management monitoring. The requirements are substantiated for quality improvement in failure cause finding and removal in mining and haulage equipment at Chernogorsky open pit mine, SUEK-Khakassia. Causes of the present quality of failure investigation by machine men of Chernogorsky Repair and Engineering Works and Chernogorsky open pit mine are revealed. The proposed recommended practices will improve quality of mining and haulage equipment failure investigation.

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