scholarly journals Risk estimation of large complex bridge construction based on factor analysis

2020 ◽  
Vol 218 ◽  
pp. 04011
Author(s):  
Qingfu Li ◽  
Jia Lei ◽  
Hua Zhang
Keyword(s):  
Factor Analysis ◽  
Large Scale ◽  
Risk Estimation ◽  
Control Process ◽  
Statistical Processing ◽  
Bridge Construction ◽  
Factors Affecting ◽  
Importance Index ◽  
Construction Risk ◽  
Questionnaire Surveys

Based on the basic theory of factor analysis, this paper analyzes the risk factors of large-scale bridge construction through questionnaire surveys and expert scoring methods, summarizes the basic data of factors affecting bridge construction, and then analyzes the possible application of factor analysis in bridge construction risk analysis Sex. Based on the statistical processing of the data by the IBM SPSS Statistics V21.0 software, the applicability of the method was verified through factor extraction, factor rotation, consistency analysis and construction validity, and pointed out that six types of main factors affecting the safety of bridge construction Factors, calculate the importance index and correlation of each risk factor, and sort them by size, so as to estimate the risk consequences of bridge construction in a targeted manner, and invest reasonable efforts to control according to the size and importance of the risk, so that the risk control process is more Reasonable and targeted.

Application of Factor Analysis to Risk Evaluation of Bridge Construction

2011 ◽  
Vol 243-249 ◽  
pp. 1848-1853 ◽  
Author(s):  
Qing Fu Li ◽  
Zhen Xin Li ◽  
Jie Niu
Keyword(s):  
Risk Factors ◽  
Factor Analysis ◽  
Risk Analysis ◽  
Risk Evaluation ◽  
Statistical Processing ◽  
Risk Environment ◽  
Bridge Construction ◽  
Construction Technique ◽  
Importance Index ◽  
Risk Construction

In this paper, the basic theory of factor analysis and the possibility of its application in the risk analysis of bridge construction was discussed. By making risk questionnaires, the basic data on the factor of bridge construction was summarized. On the basis of statistical processing of the data by SPSS 10.0 software, seven categories of main risk factors were pointed out , which are economy risk, contract and law risk , design risk, construction technique risk ,environment risk ,staff risk and material and equipment risk. Besides, the importance index and the correlation of the risk factors were calculated out. Sequentially, the risk of bridge construction can be evaluated quantitatively.

scholarly journals Factors affecting green banking practices: Exploratory factor analysis on Vietnamese banks

2017 ◽  
Vol 24 (02) ◽  
pp. 04-30
Author(s):  
Tu Tran Thi Thanh ◽  
Dung Nguyen Thi Phuong
Keyword(s):  
Sustainable Development ◽  
Factor Analysis ◽  
Large Scale ◽  
Banking Services ◽  
Factors Affecting ◽  
Negative Relation ◽  
Banking Institutions ◽  
Research Findings ◽  
Large Scale Survey

This paper aims at studying the factors affecting green banking practices in Vietnam and the role of green banking in sustainable development of the Vietnamese economy. A large scale survey con-ducted with 32 banks and financial organizations in Vietnam to obtain 329 questionnaire forms in the period from May to July 2016 provides evidence for the research. By using EFA analysis and the regression model, we find that understanding the definitions of green banking, the current activities of green banking, the advantages in developing green banking, and the focused sectors have positive relationships with the willingness of Vietnamese banks to adopt green banking practices, whereas the barriers have negative relation-ships with the willingness to utilize green banking services among Vietnamese banks. From the research findings, we suggest some solutions to not only enhance the understanding of the importance of green banking in economic development but also improve the willingness to follow green banking practices among Vietnam’s banking institutions.

scholarly journals Factors Affecting Construction Labour Productivity using Questionnaire Survey

2018 ◽  
Vol 7 (3.12) ◽  
pp. 309 ◽  
Author(s):  
A Madhan ◽  
Gunarani G I
Keyword(s):  
Production Efficiency ◽  
Labour Productivity ◽  
Project Managers ◽  
Fundamental Result ◽  
Work Efficiency ◽  
Key Factors ◽  
Factors Affecting ◽  
Importance Index ◽  
Questionnaire Surveys ◽  
Field Workers

Theoretically the most difficult issue in development industry is to enhance the production efficiency. Numerous researches have been done previously, however a more profound comprehension is as yet expected to enhance the labour productivity. The fundamental result from the writing is that there is no standard definition for labour work profitability. It covers the development labour productivity definitions, angles and factors influencing it. The labour productivity is particularly essential in developing countries, where the vast most of the building development work is still on manual premise. The point of this investigation is to get the most recent data and to recognize the key factors that influence the labour work efficiency in and around Thanjavur. So overview is brought out through questionnaire surveys and circulate to respondents who work at different undertakings in wide region in Thanjavur and the poll are evaluated by venture supervisors, project managers, construction engineers, field workers and furthermore with works utilizing their experience. What's more, the information's are gathered and investigated utilizing Relative Important Index (RII) and Importance Index (IMPI) methods, utilizing this the influenced factors are distinguished and positioned, through the vital advances are given to enhance the work efficiency.  

Mortar Thickness Calculation of Bonding Layer in Large-Scale Bridge Construction

2014 ◽  
Vol 651-653 ◽  
pp. 1188-1191
Author(s):  
Fang Yuan
Keyword(s):  
Kalman Filtering ◽  
Large Scale ◽  
Bonding Layer ◽  
Calculation Methods ◽  
Bridge Construction ◽  
Factors Affecting ◽  
Aggregate Content ◽  
Impact Indicators ◽  
The Cost

The traditional calculation methods of mortar thickness without considering creep of the bridge caused by the mortar thickness, affects the safety and quality of the bridge. This paper proposes a mortar thickness calculation method of bonding layer in large-scale bridge construction based on Kalman filtering. The method uses the mortar creep impact indicators system, selects the creep test data as sample, and analyzes its sensitivity to the thickness to get the intensity of factors affecting mortar creep. It also filters the interface of amount of cement, aggregate content, water-cement ratio and components, and effectively computes the thickness which reduces the cost while improving the quality of bridge construction.

scholarly journals Risk estimation of large complex bridge construction based on factor analysis

2020 ◽  
Vol 780 ◽  
pp. 072021
Author(s):  
Qingfu Li ◽  
Jia Lei ◽  
Wenjie Tian ◽  
Yaqian Yan ◽  
Haiyang Zhang ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Risk Estimation ◽  
Bridge Construction ◽  
Large Complex

Factors Affecting Chinese Raters’ Rating of High-Stakes English Exam Essays

2017 ◽  
Vol 40 (2) ◽  
Author(s):  
Chen Jianlin
Keyword(s):  
Factor Analysis ◽  
Rating Scale ◽  
Rater Training ◽  
High Stakes ◽  
Factors Affecting ◽  
Confirmatory Factor ◽  
Text Features ◽  
Questionnaire Surveys ◽  
Two Stages ◽  
Shed Light

AbstractThis study consists of two questionnaire surveys conducted in two stages to investigate factors that high-stakes exam essay raters believe to affect their rating behavior. Raters were all university Chinese teachers of English majors. Seventy-three participants in stage one and 75 in stage two responded to the same questionnaire. Both exploratory factor analysis and confirmatory factor analysis were used in data analysis. Results showed that there were generally six broad factors interfering with the rating process: rating scale, rater training, rating supervision, rater characteristics, eye-catching text features and rating condition. The interaction of those factors reflected the tension between the constraints executed by the test institution and raters’ own knowledge and understanding of essay rating. This study may shed light on measures taken to improve essay rating quality.

scholarly journals On the geophysical processes impacting palaeo-sea-level observations

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yusuke Yokoyama ◽  
Anthony Purcell
Keyword(s):  
Sea Level ◽  
Large Scale ◽  
Global Climate ◽  
Sea Level Change ◽  
Sea Level Changes ◽  
Factors Affecting ◽  
Ice Volume ◽  
Level Change ◽  
Recent Developments ◽  
Geophysical Processes

AbstractPast sea-level change represents the large-scale state of global climate, reflecting the waxing and waning of global ice sheets and the corresponding effect on ocean volume. Recent developments in sampling and analytical methods enable us to more precisely reconstruct past sea-level changes using geological indicators dated by radiometric methods. However, ice-volume changes alone cannot wholly account for these observations of local, relative sea-level change because of various geophysical factors including glacio-hydro-isostatic adjustments (GIA). The mechanisms behind GIA cannot be ignored when reconstructing global ice volume, yet they remain poorly understood within the general sea-level community. In this paper, various geophysical factors affecting sea-level observations are discussed and the details and impacts of these processes on estimates of past ice volumes are introduced.

scholarly journals Progress in Research on Carbon Nanotubes Reinforced Cementitious Composites

2015 ◽  
Vol 2015 ◽  
pp. 1-16 ◽  
Author(s):  
Qinghua Li ◽  
Jintao Liu ◽  
Shilang Xu
Keyword(s):  
Carbon Nanotubes ◽  
Large Scale ◽  
High Strength ◽  
Cementitious Composites ◽  
Scale Production ◽  
Multiwalled Carbon ◽  
Factors Affecting ◽  
Environment And Health ◽  
Research Activities ◽  
Major Factors

As one-dimensional (1D) nanofiber, carbon nanotubes (CNTs) have been widely used to improve the performance of nanocomposites due to their high strength, small dimensions, and remarkable physical properties. Progress in the field of CNTs presents a potential opportunity to enhance cementitious composites at the nanoscale. In this review, current research activities and key advances on multiwalled carbon nanotubes (MWCNTs) reinforced cementitious composites are summarized, including the effect of MWCNTs on modulus of elasticity, porosity, fracture, and mechanical and microstructure properties of cement-based composites. The issues about the improvement mechanisms, MWCNTs dispersion methods, and the major factors affecting the mechanical properties of composites are discussed. In addition, large-scale production methods of MWCNTs and the effects of CNTs on environment and health are also summarized.

Species Responses to Grazing and Environmental-Factors in an Arid Halophytic Shrubland Community

1987 ◽  
Vol 35 (2) ◽  
pp. 135 ◽  
Author(s):  
RB Hacker
Keyword(s):  
Environmental Factors ◽  
Soil Salinity ◽  
Large Scale ◽  
Chemical Properties ◽  
Grazing Pressure ◽  
Aerial Photographs ◽  
Small Scale ◽  
Factors Affecting ◽  
Species Responses

Species responses to grazing and environmental factors were studied in an arid halophytic shrubland community in Western Australia. The grazing responses of major shrub species were defined by using reciprocal averaging ordination of botanical data, interpreted in conjunction with a similar ordination of soil chemical properties and measures of soil erosion derived from large-scale aerial photographs. An apparent small-scale interaction between grazing and soil salinity was also defined. Long-term grazing pressure is apparently reduced on localised areas of high salinity. Environmental factors affecting species distribution are complex and appear to include soil salinity, soil cationic balance, geomorphological variation and the influence of cryptogamic crusts on seedling establishment.

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