• Title/Summary/Keyword: construction mechanism

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Formal Governance Mechanism and its Application in Construction Projects

  • Banihashemi, Seyed Yaser;Liu, Li
    • Journal of Construction Engineering and Project Management
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    • v.3 no.1
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    • pp.22-27
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    • 2013
  • Inter-organizational Relationships (IORs) governance is one of the emerging research areas that have been studied in different contexts (e.g. economics, strategy, organization, and management). This view, particularly, attracted rising attention from academics and practitioners in the context of construction projects, due to the complex forms of IORs in terms of inter-firm exchanges (e.g. engineering, procurement, finance, construction, and operation) in these projects. The focus of IORs governance is to control Inter-organizational relationships among two or more cooperative parties to alleviate conflict and achieve mutual gains. One of the mechanisms that have been identified in the related literature is formal governance mechanism. Although many empirical studies have been conducted using formal governance terms and indicators, there isn't yet a consensual definition of this mechanism and its components that may cause misinterpretation of research results and also impede future research. This paper makes contribution to the concept of IORs governance by clarifying the meaning of formal governance mechanism and identifying different indicators of this mechanism that have been used and identified in previous studies. This provides an innovative and useful framework to understand formal governance mechanism and its application in construction projects.

FORMAL GOVERNANCE MECHANISM AND ITS APPLICATION IN CONSTRUCTION PROJECTS

  • S. Yaser Banihashemi;Li Liu
    • International conference on construction engineering and project management
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    • 2013.01a
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    • pp.321-327
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    • 2013
  • Inter-organizational Relationships (IORs) governance is one of the emerging research areas that have been studied in different contexts (e.g. economics, strategy, organization, and management). This view, particularly, attracted rising attention from academics and practitioners in the context of construction projects, due to the complex forms of IORs in terms of inter-firm exchanges (e.g. engineering, procurement, finance, construction, and operation) in these projects. The focus of IORs governance is to control Inter-organizational relationships among two or more cooperative parties to alleviate conflict and achieve mutual gains. One of the mechanisms that have been identified in the related literature is formal governance mechanism. Although many empirical studies have been conducted using formal governance terms and indicators, there isn't yet a consensual definition of this mechanism and its components that may cause misinterpretation of research results and also impede future research. This paper makes contribution to the concept of IORs governance by clarifying the meaning of formal governance mechanism and identifying different indicators of this mechanism that have been used and identified in previous studies. This provides an innovative and useful framework to understand formal governance mechanism and its application in construction projects.

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Development of Motion Mechanism for Guiderail Mounting Type Window Cleaning Device (가이드레일부착형 창문청소 장치의 동작 메카니즘 개발)

  • Kim, Kyoon-tai;Jun, Young-Hun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2016.05a
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    • pp.255-256
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    • 2016
  • In order to overcome the limitation of conventional cleaning method by workers, variety attempts to develop a window cleaning apparatus has been tried. However, the existing cleaning devices were lack of consideration for avoiding projection parts of the window such as frames or profiles. In this study, operating mechanism of cleaning tool for avoiding the projections parts using a two-axis robot is proposed. Proposed mechanism is that a wiper are reposed in a relatively stationary in the vicinity of the projection and avoided the projection in this state. It is expected that the mechanism is the base of driving cleaning tool part in the new window cleaning apparatus.

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A Study on the Characteristics of the Compact Hydraulic Servo Mechanism for Proportional Position Control (비례 위치 제어용 소형 유압 서보 기구의 특성에 관한 연구)

  • Lee, Seung-Hyun;Song, Chang-Seop
    • Tribology and Lubricants
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    • v.18 no.1
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    • pp.49-54
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    • 2002
  • In this study, the characteristics of the hydraulic servo mechanism for proportional position control of a hydraulic construction eguipment were analyzed using the developed analysis tool. The result were used in the others hydraulic system except construcdtion eguipment to improve the static performance of the system, the system parameter effects on the controllable region and the hydraulic servo mechanism variation were studied.

Development of an Effective Time Scheduling Mechanism of the Structural Framework for the High-rise Apartment Housing -Focusing on One Cycle Time Scheduling Mechanism of Typical Floor- (아파트 골조공사의 공기단축 및 효과적 공정운영 방안 -기준층 사이클 공정분석을 중심으로-)

  • Han Choong-Hee;Bang Jong-Dae
    • Korean Journal of Construction Engineering and Management
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    • v.5 no.4 s.20
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    • pp.87-96
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    • 2004
  • The construction duration in apartment construction is an important factor which affects project cost. Henceforth, the time shortening is essential to retrench project cost and project risk when there adopt Five-Day Workweek and introduce apartment sales after completion of construction. Therefore, the purpose of this study is to examine closely the affecting factors on the duration of framework which forms about $40\sim50\$ percent of total time in apartment construction by analyzing the schedule mechanism of typical floor and to show the reasonable time shortening methods by case study. The shown schedule mechanism and basic schedule table can utilize as a guideline in case of scheduling of framework in the existing construction method. Also, the shown time shortening methods by three case studies will guide the direction and process of time shortening while there need time shortening in many-sided projects.

MEDIATION MECHANISM FOR CONSTRUCTION DISPUTE RESOLUTION IN TAIWAN

  • Chun-Yi Hwang;Nie-Jia Yau
    • International conference on construction engineering and project management
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    • 2011.02a
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    • pp.357-363
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    • 2011
  • Mediation has long been praised as one of effective dispute resolution methods in the area of construction law. Article 85-1 of the Taiwan Government Procurement Act was amended and promulgated by presidential decree on July 4, 2007. The second paragraph of the Article elaborates explicitly, "In the event that the application for mediation referred to in the preceding paragraph is made by the supplier, the agency may not object to such application." Beyond that, if an unsuccessful mediation of a construction dispute is due to the agency's disagreeing with the proposal or resolution for mediation proposed by the Complaint Review Board for Government Procurement ("CRBGP"), the agency may not object to the arbitration filed by the supplier. It undoubtedly reinforces the importance of the mediation-arbitration procedure. Accordingly, this paper elaborates on the mediation mechanism in Taiwan in the framework of construction disputes first. After that, dispute resolution of a local public work case is provided to demonstrate the practice of construction mediation in Taiwan. Lastly, this study proposes suggestions on applying mediation to ease similar subsequent cases.

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A NOVEL APPROACH OF BUILDING CONSTRUCTION USING ROBOTIC TECHNOLOGY

  • Baeksuk Chu;Kyungmo Jung;Hunhee Cho;Myo-Taeg Lim;Daehie Hong
    • International conference on construction engineering and project management
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    • 2011.02a
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    • pp.31-37
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    • 2011
  • Construction automation is yet to be improved since construction site still faces a lot of high risks and difficulties. This research focuses on applying robotic beam assembly system in place of construction workers. This system consists of CF (Construction Factory) structure to provide adequate working environment to robot automation. The CF structure not only gives automation environment for a robot but also houses the equipments to protect from outside effects. The robotic beam assembly system also consists of robotic bolting system and robot transport mechanism. It utilizes various tools to insert and join the bolts and nuts. Visual servoing helps precise robot motion by sensing bolt hole and tail of the bolt. ITA system helps non skilled workers to easily perform the assembly work with the robot system. The robot transport mechanism includes sliding rail and cross-wired lift. It carries the robot to a desired position for assembly work.

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An Efficient Design of Sensor Network Using Minimum Spanning Tree (최소 신장 트리를 이용한 센서 네트워크의 효과적인 구성)

  • Kim, In-Bum
    • Journal of the Korea Computer Industry Society
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    • v.10 no.3
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    • pp.79-86
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    • 2009
  • This paper proposes a mechanism for prompt and efficient construction of sensor network connecting sensor nodes and base stations using limited length edges minimum spanning tree. This mechanism can rapidly build a connecting tree which may be used in routing of sensor network. In an experiment for 2000 input terminal nodes, this mechanism can curtail 94.7% construction time comparing with the method by naive minimum spanning tree without tree length overheads. This shows the proposed mechanism can apply well to the application of swift construction of a sensor network.

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Investigation of Spalling Mechanism in High Performance Concrete Subjected to Fire (고성능 콘크리트의 화재시 폭렬성상에 관한 메카니즘 고찰)

  • Han, Min-Cheol;Kim, Seong-Hwan;Park, Yong-Kyu;Heo, Young-Sun;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2006.11a
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    • pp.99-102
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    • 2006
  • This paper reviews the relevant literatures and investigates spalling mechanism of high strength concrete, in order to clearly inform spalling problem in fire. Firstly, we studies literatures on spalling occurrence and resistance methods. Secondly chemical change of concrete components in elevated temperature was presented. Finally, mechanism of the spalling occurrence and spalling resistance were carried out with fiber content. In addition, our research team introduced spalling mechanism, being different from other points of view, which has been generally accepted. To secure this mechanism theory, we investigate spalling properties of certain specimens fabricated by roller spindle and made with mortar or concrete condition.

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Efficient Knowledge Base Construction Mechanism Based on Knowledge Map and Database Metaphor

  • Kim, Jin-Sung;Lee, Kun-Chang;Chung, Nam-Ho
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2004.05a
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    • pp.9-12
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    • 2004
  • Developing an efficient knowledge base construction mechanism as an input method for expert systems (ES) development is of extreme importance due to the fact that an input process takes a lot of time and cost in constructing an ES. Most ES require experts to explicit their tacit knowledge into a form of explicit knowledge base with a full sentence. In addition, the explicit knowledge bases were composed of strict grammar and keywords. To overcome these limitations, this paper proposes a knowledge conceptualization and construction mechanism for automated knowledge acquisition, allowing an efficient decision. To this purpose, we extended traditional knowledge map (KM) construction process to dynamic knowledge map (DKM) and combined this algorithm with relational database (RDB). In the experiment section, we used medical data to show the efficiency of our proposed mechanism. Each rule in the DKM was characterized by the name of disease, clinical attributes and their treatments. Experimental results with various disease show that the proposed system is superior in terms of understanding and convenience of use.

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