• Title/Summary/Keyword: Industrial Relation

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The Lead-Lag Relationship between BSI and Industrial Production Index in Construction Industry (건설업 BSI와 산업생산지수 간의 선후행성)

  • Yoo, Han-Soo
    • Land and Housing Review
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    • v.11 no.3
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    • pp.33-37
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    • 2020
  • The aim of this paper is to scrutinize the relation between Business Survey Index and Industrial Production Index in construction industry, stated in another way, the relation between CEO's expectations of future business status and real business activity in construction industry. Previous papers on this research area have been examined the relation between released BSI and released IPI. However, this paper focuses 'the relation between released BSI and the long-run component of IPI' and 'the relation between released BSI and the short-run component of IPI'. The first step is to decompose released IPI by unobserved component model. The long-run component of IPI is set up as a random walk process. And short-run component is set up as a stationary AR(1) process. The findings are as follows. First, released BSI Granger causes unidirectionally released IPI. Second, there exists one-way Granger causality from released BSI to long-run component of IPI. Third, Granger causality does not exist between released BSI and 'short-run component of IPI'. BSI increases IPI in the second or third month. These findings of this paper mean that CEO's expectations may influence industrial production in construction industry.

Construction of a Relation Between the Triadic Min(N, T, D) and Max(N, T, D) Operating Policies Based on their Corresponding Expected Busy Periods (Busy Period 기대값을 사용하여 삼변수 Min(N, T, D)와 Max(N, T, D) 운용방침사이의 관계식 설정)

  • Rhee, Hahn-Kyou
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.33 no.3
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    • pp.63-70
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    • 2010
  • Based on the known results of the expected busy periods for the triadic Min (N, T, D) and Max (N, T, D) operating policies applied to a controllable M/G/1 queueing model, a relation between them is constructed. Such relation is represented in terms of the expected busy periods for the simple N, T and D, and the dyadic Min (N, T), Min (T, D) and Min (N, D) operating policies. Hence, if any system characteristics for one of the two triadic operating policies are known, unknown corresponding system characteristics for the other triadic operating policy could be obtained easily from the constructed relation.

A study of Time Management System in Data Base (데이터베이스에서의 시간 시스템에 관한 연구)

  • 최진탁
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.21 no.48
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    • pp.185-192
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    • 1998
  • A new algorithm is proposed in this paper which efficiently performs join in the temporal database. The main idea is to sort the smaller relation and to partition the larger relation, and the proposed algorithm reduces the cost of sorting the larger relation. To show the usefulness of the algorithm, the cost is analyzed with respect to the number of accesses to secondary storage and compared with that of Sort-Merge algorithm. Through the comparisons, we present and verify the conditions under which the proposed algorithm always outperforms the Sort-Merge algorithm. The comparisons show that the proposed algorithm achieves 10∼30% gain under those conditions.

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The Underpricing and The Long-run Performance of IPO Firms (IPO기업의 장기성과와 저가발행)

  • 황동섭;이재범
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.23 no.57
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    • pp.41-49
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    • 2000
  • This paper investigates the relation between operating performance and initial underpricing of companies that go public. A significant decline in operating performance subsequent to the initial public offering(IPO) is found. Additionally there is a significant positive relation between post-IPO operating performance and the level of initial underpricing.

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A Study on Effect of Commitment Typed HRM Practice on Business Performance Focusing on Adjusting effects of Labor-management Relations Character (몰입형 인적자원관리 관행이 경영성과에 미치는 영향 분석 노사관계 성격의 조절효과를 중심으로)

  • Kim, Dong-Hyun;Jeong, Jae-Hoon
    • Journal of the Korea Safety Management & Science
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    • v.10 no.4
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    • pp.247-258
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    • 2008
  • In today's business environment faced in very quick change, Human Resource Management play a key role in sustaining corporate competitive advantage and boosting organizational competency. Based on a former study, the purpose of this study is to find how individual Human Resource Management practice effects business performance and labor relations. Business performance is a positive influence on employee royalty and devotion. Also it is more influenced statistically significant impact on industrial relation of corporate. As a result of this study, we can find the significant influence from Human Resource Management practice and industrial relation.

Analysis on the Relation between Major Subjects of Architecture & Civil Engineering and Mathematics in Korean Industrial Circle High School (공업계 고등학교 토목.건축 학과의 전문 교과와 수학 교과와의 연관성 분석 연구)

  • Cho, Min Hye;Cho, Minshik
    • School Mathematics
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    • v.15 no.4
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    • pp.801-818
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    • 2013
  • The purpose of this study is to investigate the relation between major subjects of industrial circle high school and mathematics matched with present 2007 revision curriculum. We compare and analyze learning contents in industrial circle's math education via various aspects including methods of explanations, contents domains, and contents levels. The analysis followed by the research study performed with literature study of curriculums and text books. Our research indicates that school curriculum should be reflected relation between industrial high school's each major course and mathematics, so each major course curriculum should be different. Many contents beyond high school mathematics were founded. Hence suitable mathematical maturity and levels within standard high school math curriculum should be considered when one make text books of major course in industrial circle high school.

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A Comparison of Estimation Approaches of Structural Equation Model with Higher-Order Factors Using Partial Least Squares (PLS를 활용한 고차요인구조 추정방법의 비교)

  • Son, Ki-Hyuk;Chun, Young-Ho;Ok, Chang-Soo
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.36 no.4
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    • pp.64-70
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    • 2013
  • Estimation approaches for casual relation model with high-order factors have strict restrictions or limits. In the case of ML (Maximum Likelihood), a strong assumption which data must show a normal distribution is required and factors of exponentiation is impossible due to the uncertainty of factors. To overcome this limitation many PLS (Partial Least Squares) approaches are introduced to estimate the structural equation model including high-order factors. However, it is possible to yield biased estimates if there are some differences in the number of measurement variables connected to each latent variable. In addition, any approach does not exist to deal with general cases not having any measurement variable of high-order factors. This study compare several approaches including the repeated measures approach which are used to estimate the casual relation model including high-order factors by using PLS (Partial Least Squares), and suggest the best estimation approach. In other words, the study proposes the best approach through the research on the existing studies related to the casual relation model including high-order factors by using PLS and approach comparison using a virtual model.

A Relation-based Model for Analyzing Ecosystems of Products, Services and Stakeholders (제품 서비스 시장참여자의 에코시스템 분석을 위한 관계 기반 모델 개발)

  • Kang, Chang-Muk;Hong, Yoo-Suk;Kim, Kwang-Jae;Park, Kwang-Tae
    • Journal of Korean Institute of Industrial Engineers
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    • v.37 no.1
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    • pp.41-54
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    • 2011
  • A central theme in recent IT (information technology) industry is a mobile ecosystem. While a concept of business ecosystem, which is an economic community of firms and individuals producing and consuming goods and services, has been around for about 20 years now, the recent spotlight is mainly caused by the enormous success of iPhone. Many hand-set makers or platform developers want to mimic Apple's iPhone ecosystem from which both application developers and hand-set users can benefit. In this study, a representation model of the business ecosystem is proposed for supporting systematic design and analysis of ecosystems. Whereas previous studies also proposed some representation models, they emphasized only on the value chain between participating players. The proposed model, which is named relation-based ecosystem model, represents an ecosystem with the requirement relationships between product and service components and the roles of players, as well as their value chain. Such comprehensive representation explicitly reveals the strategic difference between ecosystems. This advantage was illustrated by comparing a Korean traditional mobile ecosystem and an emerging smart-phone ecosystem represented by the proposed model.

Monitoring of Dry Cutting and Applications of Cutting Fluid for Ball End Milling

  • Tangjitsitcharoen, Somkiat;Rungruang, Channarong;Laiaddee, Duangta
    • Industrial Engineering and Management Systems
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    • v.9 no.3
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    • pp.242-250
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    • 2010
  • For economical and environmental reasons, the aim of this research is hence to monitor the cutting conditions with the dry cutting, the wet cutting, and the mist cutting to obtain the proper cutting condition for the plain carbon steel with the ball end milling based on the consideration of the surface roughness of the machined parts, the life of the cutting tools, the use of the cutting fluids, the density of the particles of cutting fluids dispersed in the working area, and the cost of cutting. The experimentally obtained results of the relation between tool wear and surface roughness, the relation between tool wear and cutting force, and the relation between cutting force and surface roughness are correspondent with the same trend. The phenomena of surface roughness and tool wear can be explained by the in-process cutting forces. The models of the tool wear with the cutting conditions and the cutting times are proposed to estimate the tool cost for the different cooling strategies based on the experimental data using the multiple regression technique. The cutting cost is calculated from the costs of cutting tool and cutting fluid. The mist cutting gives the lowest cutting cost as compared to others. The experimentally obtained proper cutting condition is determined based on the experimental results referring to the criteria.

A Study on Some Issues of Business and Law in relation to ICC Model Turnkey Contract - Focusing on ICC Model Contract for Turnkey Supply of Industrial Plant (ICC모델 턴키 계약의 쟁점에 관한 연구 - ICC Model Contract for Turnkey Supply of Industrial Plant를 중심으로 -)

  • Kim, Kyoung-Ok;Kim, Dae-Hwan
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.54
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    • pp.189-209
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    • 2012
  • This Work intends to study on some issues of business and law in relation to Contract for Turnkey Base System. The continuing advance of export system of the plant with the importance for efficient and effective management emphasizes the need for business and legal approach to uniform international model contract. ICC Model Contract for Turnkey Supply of Industrial Plant by ICC covers a particular category of turnkey contract, i.e. contracts for the supply of a plant or production line to be erected within facilities which already exist or which are constructed by the purchaser. Furthermore, the application of the ICC Model Contract for Turnkey Supply of Industrial Plant leaves much to be desired from a business and legal point of view. Therefore, there would appear to be room for compromise between the supplier and purchaser in respect to make a contact for Turnkey supply of industrial plant.

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