• Journal of Construction Engineering and Project Management
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• 제5권2호
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• pp.11-15
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• 2015

The Last PlannerSystem (LPS) has been implemented on construction projects to increase work flow reliability, a precondition for project performance againstproductivity and progress targets. The LPS encompasses four tiers of planning processes:master scheduling, phase scheduling, lookahead planning, and commitment / weeklywork planning. This research highlights deficiencies in the current implementation of LPS including poor lookahead planning which results in poor linkage between weeklywork plans and the master schedule. This poor linkage undetermines the ability of theweekly work planning process to select for execution tasks that are critical to projectsuccess. As a result, percent plan complete (PPC) becomes a weak indicator of project progress. The purpose of this research is to improve lookahead planning (the bridgebetween weekly work planning and master scheduling), improve PPC, and improve theselection of tasks that are critical to project success by increasing the link betweenShould, Can, Will, and Did (components of the LPS), thereby rendering PPC a betterindicator of project progress. The research employs the case study research method to describe deficiencies inthe current implementation of the LPS and suggest guidelines for a better application ofLPS in general and lookahead planning in particular. It then introduces an analyticalsimulation model to analyze the lookahead planning process. This is done by examining the impact on PPC of increasing two lookahead planning performance metrics: tasksanticipated (TA) and tasks made ready (TMR). Finally, the research investigates theimportance of the lookahead planning functions: identification and removal ofconstraints, task breakdown, and operations design.The research findings confirm the positive impact of improving lookaheadplanning (i.e., TA and TMR) on PPC. It also recognizes the need to perform lookaheadplanning differently for three types of work involving different levels of uncertainty:stable work, medium uncertainty work, and highly emergent work.The research confirms the LPS rules for practice and specifically the need to planin greater detail as time gets closer to performing the work. It highlights the role of LPSas a production system that incorporates deliberate planning (predetermined andoptimized) and situated planning (flexible and adaptive). Finally, the research presents recommendations for production planningimprovements in three areas: process related, (suggesting guidelines for practice),technical, (highlighting issues with current software programs and advocating theinclusion of collaborative planning capability), and organizational improvements(suggesting transitional steps when applying the LPS).

• 한국콘텐츠학회논문지
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• 제14권8호
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• pp.394-405
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• 2014

본 연구는 생명보험산업의 자본시장법 시행 전 2005년부터 2008년까지의 자료와 시행 후 2009년부터 2012년까지의 자료를 토대로 첫째, 자료포락분석을 이용하여 자본시장법 시행 전 후의 효율성 분석을 하고, 대응표본 t-검정을 통해 시행 전 후의 효율성 차이를 살펴보았다. 둘째, 맘퀴스트 지수를 이용하여 자본 시장법 시행 전 후의 생산성 변화를 분석하고 대응표본 t-검정을 통해 생산성 변화 차이를 파악하였다. 셋째, 토빗 회귀분석을 이용하여 자본시장법 시행 전 후 효율성 결정요인을 분석하였다. 본 연구결과는 첫째, 자본시장법 시행 전 후 효율성 평균의 차이가 통계적으로 유의적인 차이가 없는 것으로 나타났다. 둘째, 자본시장법 시행 전 후 생산성 변화의 차이가 5% 수준에서 통계적으로 유의적인 차이가 나타나 시행 후 생산성이 증가하였음을 보여주고 있다. 셋째, 토빗 회귀분석 결과를 보면 설계사 비중이 자본시장법 시행 전 후의 효율성에 통계적으로 유의적인 정의 영향을 미치는 것으로 나타났다.

• Journal of the Korean Data and Information Science Society
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• 제27권5호
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• pp.1337-1347
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• 2016

본 연구는 생명보험사의 핵심 영업채널의 역할을 하고 있는 보험설계사들에 대한 설문을 바탕으로 보험설계사들의 이직횟수에 영향을 주는 요인을 찾고자 한다. 반응변수 이직횟수는 계수자료 (count data)이기에 일반화선형모형의 하나인 포아송회귀모형을 통해 분석된다. 현 조직에서의 보험설계사 근무경력은 보험설계사의 이직횟수에 직접적인 영향을 주는 변수로 본 연구모형에서는 통제변수로 설정되었다. 포아송회귀모형 적합결과, 보험설계사 이직의 횟수에 가장 큰 영향을 주는 요인은 현재 속한 회사 (대리점)으로 나타났으며, 다음으로 연령, 보험설계사로 입사하게 된 동기, 월평균 소득, 월평균 신계약건수, 최종학력 순으로 나타났다. 보험설계사가 현재의 속한 조직이 대형생보사이면 이직의 횟수가 가장 낮고, GA (general agent, 독립대리점) 소속이면 이직의 횟수가 높아지는 경향을 보이고 있다. 연령은 적을수록 이직의 횟수는 증가하고 연령이 많을수록 이직의 횟수는 작아짐을 보여주었다. 보험설계사로 입사하게 된 동기는 친구, 친척, 가족 등 지인의 추천과 동료FP, 소장, 지점장 등의 권유이면 이직의 횟수는 작게 나타났고 단순한 경제적 수입의 니즈와 능력과 적성이 부합의 자발적인 경우는 오히려 이직의 횟수는 높게 나타났다.

• Radiation Oncology Journal
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• 제4권2호
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• pp.179-181
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• 1986

최근 방사선치료영역에 있어 CT의 역할은 매우 중요시되고 있다. 종래의 병기결정 등 진단적가치 이외에도 방사선치료분야에 있어서는 환자신체의 윤곽 종양침습 범위, 인접 정상구조물의 위치, 조직불균질성의 정도 등을 정확하게 파악할 수 있고 입체적영상의 재구성도 가능하여 주위 정상조직의 손상 없이 충분한 종양치료선량을 조사하는데 있어 거의 필수이라고 까지 할 수 있다. 이와 같은 진단용 CT상은 모두 실물크기를 일정 비율로 축소시킨 영상으로 기록 및 보관되고 있는 바 방사선치료계획시 이 축소된 CT상을 치료계획용 콤퓨터에 입력할 경우 같은 CT영상일지라도 치료의사에 따라서 또 입력할 때마다 조금씩 차이가 생길 수 있음으로 이와 같은 오차를 줄이기 위하여는 실물크기의 영상이 필요하게 된다. 저자들은 축소된 CT영상을 실물크기로 확대하기 위하여 overhead projector(3M사제)와 평면거울을 부착시킨 정맥주사용 Pole을 이용하여 값싸고 간단한 장치를 고안하였으며, 이를 사용하여 쉽게 실물크기영상을 치료계획용콤퓨터 (Thenac 2000, NEC제)의 입력판위에 얻을 수 있었기에 보고하는 바이다.

• 대한건축학회논문집:계획계
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• 제34권12호
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• pp.103-112
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• 2018

High-rise mixed-use buildings are consisted of various facilities and circulations. Since various facilities and circulations are planned in a single site, circulation planning should be established after identifying the exact characteristics of facility and circulation. To this end, the components of the circulation planning in accordance with the formation of facility types are analyzed through the survey of experts based on Delphi Method. To identify the characteristics of the mixed-use buildings, by figuring out how the elements of circulation planning which are sought to be important by the planner has been reflected through analysis of the correlation between two sections. Researching on the circulation between two sections through Delphi Method and reflected circulation planning, it reaches the conclusion that the circulation of planning on the subject building is applied following the importance. In other words, the components of circulation planning which were sought to be important by the planner are reflected significantly when they planned the circulation planning on that mixed-use buildings. However, in case of design on the outdoor vehicle circulation, minimizing on the vehicle circulation at the 1st floor is not applied for the majority of the subject buildings different from the importance. In early 2000, high end residential buildings designed for mixed-use building have been specialized at vehicle-centered outdoor space and hotel style drop-off. Contrastively, sizable outdoor space at the 1st floor is designed to open to the residents and the local by minimizing the vehicle circulation in recent. Finally it shows that the way of circulation planning has been changed in accordance with time and trend.

• 한국산업융합학회 논문집
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• 제25권6_2호
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• pp.1097-1102
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• 2022

With the continuous development of the current industry, the current global environment is in a very serious situation, with resource supply and demand dependent on imports and huge costs for waste disposal due to the depletion of resources and mass generation of industrial waste. Its limitations have already been revealed in many fields, and the importance of re-manufacturing is drawing attention as a countermeasure to these problems. Re-manufacturing aims to recover products that are in the aging and disposal stages, recover to performance close to new products, and re-commercialize them. Among them, most of the machine tools are made of materials such as steel and cast iron with large structures, and raw materials are widely used when producing new products. In addition, since a lot of carbon is generated due to production, it is an object that can obtain a great re-manufacturing effect. Planner millers belonging to large machine tools are one of the machine tool equipment that can greatly reduce resources and energy through re-manufacturing because the structure is very large and the casting is several to tens of tons. Through this machine tool, performance tests and results are derived on the development of re-manufacturing source technology and domestic servo motor and CNC control device.

• 품질경영학회지
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• 제19권1호
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• pp.151-162
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• 1991

The purpose of this study is to propose a facility layout design algorithm based on artificial intelligence concept, and then to develop a computer program which is more practical than any other conventional facility layout design systems. The algorithm is composed of five step layout procedures; knowledge and data input, knowledge interpretation, priority determination, inference of layout design, and evaluation, In the step of priority determination, the algorithm is divided into single row and multi row layout problem. In the step of inference of layout design, alternatives are generated by constraints-directed reasoning and depth first search method based on artificial intelligence concept. Alternatives are evaluated by the moving cost and relationship value by interactive man-machine interface in the step of evaluation. As a case study, analytical considerations over conventional programs such as CRAFT and CORELAP was investigated and compared with algorithm propsed in this study. The proposed algorithm in this study will give useful practical tool for layout planner. The computer progran was written in C language for IBM PC-AT.

• 한국항만학회지
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• 제13권2호
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• pp.351-364
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• 1999

This study aims at advancing waterfront planning and development of North Port or of Pusan and attempting to establish an identity through the analysis and case studied of waterfront development of foreign countries. This study is based on Pusan urban harbor plan and the case study which was investigated the relational port with an urban area to find a model of development method and procedure of urban waterfront renewal. The approach of this study is to classify diversified cases and to suggest elements after reviewing successful cases. The point in the waterfront development plan of North Port of Pusan is how to secure an amenity on the edge and provides a comprehensive theoretical base such as skyline, coastline, green area, accessibility scenery, landmark, open space, and so on. The results of this stud is useful for the planner to develop more and systematic approaches which could utilize waterfront. Waterfront development will be a new change of urban development for Pusan.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1479-1484
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• 2009

It is commonly recognized to need performance management for successful construction project. PPC measurement of Last Planner System is one of construction project measurement method. PPC measurement is quantitatively assessment to go through construction, and that is not completely to be trusted when compare a project with another or an individual case work with another in same project. According to, purpose of this study is comparison indicator establishment that compare project with another or an individual case work with another it is not use PPC measurement for quantitatively assessment to go through construction. The procedure of this study is derive of the point at issue of existing PPC measurement for a aim PPC measurement in this study expenditure and select weight about that and it is applied to actually construction.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2006년도 추계학술발표대회 논문집
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• pp.377-381
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• 2006

The purpose of this study was to suggest the improvement plan for IAQ of the combined officetel and residence through analyzing demands, satisfaction, subjective symptoms and device of residents. For this study, the data was collected from 110 residents by questionnaire survey and an experienced planner by interview. The result showed that the IAQ improvement of the combined officetel and residence was urgent. The educational program about maintenance of IAQ for residents was essentially needed. To recommend eco-friendly materials in process of construction wasimportant so as to take precaution against ‘sick building syndrome'. It was also necessary to improve on the size and shape of ventilation window.