• Title/Summary/Keyword: defective construction

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Assessment of ASP for the Construction Industry (건설 산업 ASP 평가 및 우선 적용 건설업무기능의 도출)

  • Kang, Seung-Hee;Lee, Sang-Hyung;Jung, Young-Soo
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2006.11a
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    • pp.579-583
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    • 2006
  • Adopting ASP applications in the construction industry can minimize the resource and cost of an enterprise. And it also can overcome defective management ability and poor management environment. Thus, This paper develops and evaluates a model of business functions and factors which have influence on the assessment of ASP for the construction industry. The findings of this study can provide the basis of ASP research in the construction industry, and help the construction firms to make decision for adopting ASP

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Challenge of City Environment Construction and Strategy of Green Space System

  • Bingluo Wang;Juan Cao
    • Journal of the Korean Institute of Landscape Architecture International Edition
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    • no.2
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    • pp.39-44
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    • 2004
  • The city environment construction of China is facing many difficulties and challenges. Through the concerted exploration in the recent years to find the way of improving city environment that is suitable to Chinese situation, the result is to plan and construct a complete green space system, supplement the defective conditions by the system's superiority and produce the integrated effectiveness. The article dissertates on the composition of green space system, some important issues in the planning and construction and corresponding measures. The fact illustrates the effectiveness of city green space system in solving the city environment problems. However it needs some research and continues improving.

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A Fundamental Study on the Measurement of Fineness Modulus Using CNN-based Deep Learning Model (CNN기반의 딥러닝 모델을 활용한 잔골재 조립률 예측에 관한 기초적 연구)

  • Lim, Sung-Gyu;Yoon, Jong-Wan;Pack, Tae-Joon;Lee, Han Seung
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.11a
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    • pp.50-51
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    • 2021
  • Recently, as concrete is used in many construction works in Korea, the use of aggregates is also increasing. However, the depletion of aggregate resources is making it difficult to supply and demand high-quality aggregates, and the use of defective aggregates is causing problems such as poor performance such as the liquidity and strength of concrete pouring out in the field. As a result, quality tests such as sieve analysis test is conducted on their own, but this study was conducted to improve time and manpower by using the CNN-based Deep Learning Model for the fineness modulus.

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On the Estimation of Fraction Defectives

  • Kim, Seong-in
    • Journal of Korean Society for Quality Management
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    • v.8 no.2
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    • pp.3-14
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    • 1980
  • This paper is concerned with the design of an appropriate sampling plan or stopping rule and the construction of estimate for the estimation of process or lot fraction defective. Various sampling plans which are well known or have potential applications are unified into a generalized sampling plan. Under this sampling plan sufficient statistic, probability distribution, moment, and minimum variance unbiased estimate are obtained. Results for various sampling plans can be derived as special cases. Then, under given parameter values, the relative efficiencies of the various sampling plans are compared with respect to expected sample sizes and variances of estimates.

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Construction of Pretense-defective Mutant of Bacillus subtilis by Homologous DNA Recombination (상동성 유전자재조합을 이용한 단백질분해효소 비생산 바실러스균주의 구축)

  • Lee, Jin-Tae;An, Bong-Jeun
    • Food Science and Preservation
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    • v.7 no.4
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    • pp.414-417
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    • 2000
  • Competent cell transformation of B. subtilis AC819 was carried out using phenotypic protease-defective(Npr-) DNA of B. subtilis MT-2. An obtained transformant, designated B. subtilis HL-1, was obtained by homologous DNA recombination. Phenotypes of B. subtilis HL-1 were characterized histidine requirement streptomycin-resistance, tetracyclin resistance and non-producing protease. Protoplast transformation frequency of B. subtilis HL-1 by plasmid pUB110 was higher than that of B. subtilis MT-2. From this result, B. subtilis HL-1 is useful for protease gene transformation and thermostable protease gene cloning as a host.

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Analysis of the Causes of Defects in Fenestration Construction and Their Impacts on Construction Quality - Focused on Door Hardware - (창호철물공사 하자발생 원인과 시공품질 영향분석에 관한 연구 - 문(Door)에 사용되는 창호철물 중심으로 -)

  • Moon, Sang-Deok;Chung, Jae-Min;Ock, Jong-Ho
    • Journal of the Korea Institute of Building Construction
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    • v.13 no.4
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    • pp.341-350
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    • 2013
  • For this study, a series of interviews with engineers in the Korean construction industry was carried out through a formal workshop format to analyze the causes of the inferior quality of builders' hardware. The authors established the causes of defects in window hardware construction in relation to the three aspects of system, design, and construction as involving the following seven factors: lack of system (including low ability to create construction specifications); low social awareness of the importance of window hardware; low technical capability to create design drawings; low design costs; small manufacturing capacity; low construction cost; and short duration of construction. Among the seven causes, the biggest cause of defects in window hardware construction is the lack of a system (low ability to create construction specifications), followed by low technical capability to create design drawings. In addition, this study carried out basic research to create measures to prevent defects in window hardware construction by analyzing how such causes of defects are distributed depending on the scale of architectural firms and construction companies during actual projects.

Causes of Construction Delays of Apartment Construction Projects: Comparative Analysis between Vietnam and Korea

  • Kim, Young-Mok;Kim, Soo-Yong;Luu, Truong-Van
    • Korean Journal of Construction Engineering and Management
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    • v.9 no.5
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    • pp.214-226
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    • 2008
  • Construction delay caused considerable losses to project parties. Avoiding construction delays is important to save costs for project stakeholders. The main objective of this paper is to identify major causes of construction delays of apartment construction projects in Vietnam. Sixteen causes of delay were identified through a questionnaire survey of 166 professionals. Factor analysis was employed to categorize these causes. The results of the survey revealed the main causes of delay of apartment projects in Vietnam are: (1) owner's and contractor'S financial difficulties; (2) lack of experienced contractors; (3) late delivery of materials; (4) late construction site handover; (5) owner's late payments for completed works; (6) low bid prices; (7) inappropriate construction method; and (8) defective works and unnecessary reworks. Factor analysis uncovered that causes of delay can be grouped under five categories labeled the five INs: incompetence, ineffectiveness, inadequateness, inapplicableness and inconceivableness. Comparative analysis between the Vietnam construction industry (VCI) and the Korea construction industry (KCI) has been performed to infer valuable lessons for researchers and practitioners in the VCI and the KCI. Comparative analysis indicated that main causes of delay in the VCI somewhat differ from main causes of delay in the KCI. However, "contractor'S financial difficulties", "late construction site handover", "unnecessary rework", "incapable designers", "site clearance difficulties" are common causes of delay in the VCI as well as the KCI. The findings of this research can be used as a guideline to overcome problems in the VCI as well as in other construction industries. Since Korea has emerged as the first largest foreign investor in Vietnam, the results of this study may be useful not only to practitioners and researchers in Vietnam but also to participants in Korea.

A Suggestion of the ADR in Public Construction Disputes (공공건설사업에서의 사전분쟁해결(ADR)방법 도입방안)

  • Cho, Young-Jun
    • Proceedings of the Korea Contents Association Conference
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    • 2006.05a
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    • pp.356-359
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    • 2006
  • Dispute is construction itself. Serious difficulties ore occurred between contract parties when These disputes have occurred. Authority may fear the defective work if the requirement of contractor is fully reflected in the adjustment of contract. On the other hand the contractor may have fears that no payment or some payment of the extra work or the additional work done will be required. Therefore these problems must be resolved before these result in an enlarged riffle effect. To reduce the fear of the contract parties, ADR(Alternative Dispute Resolution) process were suggested.

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- An Empirical Research on the Product Liability Response System for Consumer Safety- (소비자 안전을 위한 제조물 책임 대응시스템에 관한 실증적 연구)

  • Kim Jin Yong;Oh Byeong Wan
    • Journal of the Korea Safety Management & Science
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    • v.6 no.3
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    • pp.65-75
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    • 2004
  • Product liability is the law of the manufacturer's responsibilities for the consumers' personal injuries or the losses of property resulted from defective products. In today's many countries, the product liability law are being enacted because of the safety of product use and the protection of consumer's right. In korea, the product liability is going to enforce on July 1, 2002. Though the construction of product liability response system is urgent situation, domestic manufacture company's PL response system is not nearly prepared in present. Consequently, the purpose of this study is to discuss the Quality Management's importance and the PL countermeasures by presenting the difference of PL response system construction degree by the Quality Management Maturity degree

A Study on the Productivity Increment through Construction of HT8 Management System for Automobile Plant in China (중국 자동차 공장의 HT8 관리체계 구축을 통한 생산성 향상에 관한 연구)

  • Lee, Doo-Yong;Jang, Jung-Hwan;Yoo, Sung-Hee;Lee, Chang-Ho
    • Journal of the Korea Safety Management & Science
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    • v.14 no.1
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    • pp.123-128
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    • 2012
  • This paper deals with the productivity increment through construction of HT8 production system for automobile factory in China. HT8 production system start to build up several management indices. The important management indices consists of organization management, location management, management of order, management of defective item, management of delivery information, and warehouse management. This HT8 production system is expected to obtain the improvement for overall organization management and reduction by 50% in warehouse cost.