• Title, Summary, Keyword: Maintenance

Search Result 14,633, Processing Time 0.059 seconds

Update on the Evidence Regarding Maintenance Therapy

  • Lee, Jeong Eun;Chung, Chae-Uk
    • Tuberculosis and Respiratory Diseases
    • /
    • v.76 no.1
    • /
    • pp.1-7
    • /
    • 2014
  • Maintenance therapy has emerged as a novel therapeutic paradigm for advanced non-small-cell lung cancer (NSCLC). Maintenance therapy that aims to sustain a clinically favorable state after first-line chemotherapy has two strategies. Switch maintenance therapy entails switching to a new and non-cross-resistant agent in an alternating or sequential manner, on completion of first-line chemotherapy. Continuous maintenance therapy keeps ongoing administration of a component of the current regimen after four to six cycles of chemotherapy, if there is a stable disease, or better response. Both maintenance therapies can be continued, until disease progression. The potential evidence regarding maintenance therapy includes providing the opportunity to receive additional treatment, through sustaining tumor shrinkage, and delayed emergence of tumor-related symptom. Thus far, debates over the parameters used to predict the effectiveness of maintenance therapy, financial burden, and uncertainty of improving the quality of life exist. Despite many debates, maintenance therapy, which is currently recommended, has been disclosed to be beneficial.

Improving Maintenance Management Practices for Building Facility

  • Ismail, Zul-Atfi
    • Journal of Construction Engineering and Project Management
    • /
    • v.4 no.3
    • /
    • pp.21-32
    • /
    • 2014
  • The practiced conventional methods for maintenance management in Malaysian Polytechnic faced many issues due to poor service delivery, inadequate finance, poor maintenance plan and maintenance backlogs. The purpose of this study is to improve the conventional method practices which tend to be ineffective in Malaysian Polytechnic. The case studies were conducted with eight Polytechnics and are selected based on conventional method practices and its major problems. There are around 32 Polytechnics in Malaysia and almost are using conventional methods. The number is considered very big indicating that the use of modern Information and Communication Technology (ICT) is still very limited compared to other institutions of higher learning in Malaysia. The overall findings of this research indicated; poor service delivery, inadequate financial, poor maintenance planning and maintenance backlogs. There is also need to overcome less man power competencies of maintenance management practices which existed with all eight Polytechnics. The proposed system is intended to be used for maintenance management practices at Malaysian Polytechnics in order to provide high-quality of building facility with safe and healthy environments.

Study on the Development of Maintenance Process in Long-Life Housing - Focus on the Development of Maintenance Process for the Manager - (장수명공동주택의 유지관리업무프로세스 구축에 관한 연구 - 관리자를 위한 유지관리업무프로세스를 중심으로 -)

  • Ji, Jang-Hun;Kim, Soo-Am;Yoon, Sang-Cho
    • Proceeding of Spring/Autumn Annual Conference of KHA
    • /
    • /
    • pp.344-349
    • /
    • 2009
  • To be Low Carbon and Green Growth, it is necessary that Long-Life Housing based on Green Technology is supplied. The main concern at the moment is developing Sustainable Housing relative to Life-Cycle or Life-Style of the residents, and the resident of Remodeling or Redevelopment. This study is aim to be Development of Maintenance Process in order to make steady dwelling when supplying Long-Life Housing that separates Support(Skeleton) and Infill different from the existing Short-Life Housing, and has durability, alterability, available remodeling, easy maintenance. Long-Life Housing should consider the maintenance about movement and variableness. In contrast, the maintenance of the existing Housing is regular maintenance, change and repair by damage. As well as Long-Life Housing should be demanded proper Development of Maintenance Process because of difference of Housing in concept, design and Construction. Therefore, this study looks into problems when applying Development of Maintenance Process in Long-Life Housing, and shows Development of Maintenance Process about the efficient Long-Life Housing for the manager.

  • PDF

Methodologies of Duty Cycle Application in Weapon System Reliability Prediction (무기체계 신뢰도 예측시 임무주기 적용 방안에 대한 연구)

  • Yun, Hui-Sung;Jeong, Da-Un;Lee, Eun-Hak;Kang, Tae-Won;Lee, Seung-Hun;Hur, Man-Og
    • Journal of Applied Reliability
    • /
    • v.11 no.4
    • /
    • pp.433-445
    • /
    • 2011
  • Duty cycle is determined as the ratio of operating time to total time. Duty cycle in reliability prediction is one of the significant factors to be considered. In duty cycle application, non-operating time failure rate has been easily ignored even though the failure rate in non-operating period has not been proved to be small enough. Ignorance of non-operating time failure rate can result in over-estimated system reliability calculation. Furthermore, utilization of duty cycle in reliability prediction has not been evaluated in its effectiveness. In order to address these problems, two reliability models, such as MIL-HDBK-217F and RIAC-HDBK-217Plus, were used to analyze non-operating time failure rate. This research has proved that applying duty cycle in 217F model is not reasonable by the quantitative comparison and analysis.

Proper Decision for Maintenance Intervals of Equipment in Power Stations by Considering Maintenance Replacement Rate and Operation Rate

  • Nakamura, Masatoshi;Suzuki, Yoshihiro;Hatazaki, Hironori
    • 제어로봇시스템학회:학술대회논문집
    • /
    • /
    • pp.157.3-157
    • /
    • 2001
  • In this paper, the optimal maintenance scheduling for turbine with considering maintenance replacement rate was proposed in order to reduce the maintenance cost during the whole period of operation, meanwhile keeping current reliability of turbine. The proposed method is only based on a few limited available data with various factors relating to maintenance replacement and repair of turbine. The proposed method will be adopted by Kyushu Electric Power Co., Inc. from April in 2002 to determine the maintenance schedule of thermal power plants.

  • PDF

A study on economical wheel maintenance process to improve waste factors (차륜 낭비요인 개선을 위한 경제적 차륜관리방안 연구)

  • Hur Hyun-Moo;Kwon Sung-Tae;Kim Hyung-Jin;Yun Chun-Han
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.656-662
    • /
    • 2003
  • The rolling-stocks used in conventional line have suffered wheel problems due to lack of adaptability with track. These brought out severe wheel wear and inefficiency of wheel maintenance. Especially, tight wheel maintenance criteria have caused waste factors of wheel machining, these increases rolling-stock maintenance costs. Thus, this study was started to Propose the wheel maintenance plans to improve maintenance efficiency in respect to wheel maintenance process in rolling-stock workshop. Here, we describe some results

  • PDF

A Statistical Method on the Estimation of the Maintenance Manpower of Aircraft (통계적 방법을 이용한 항공기 정비인력산정)

  • 송근우;최석철
    • Journal of the military operations research society of Korea
    • /
    • v.26 no.1
    • /
    • pp.70-88
    • /
    • 2000
  • In this research we consider a statistical model to estimate the optimal maintenance manpower of aircraft which we use at present. We design a multiple regression model, apply to three types of aircraft to estimate the optimal maintenance manpower of aircraft. This paper provides reasonable results about maintenance manpower of aircraft, and contributes accomplishment of mission for air and air support operations.

  • PDF

A Corrective Maintenance Policy Which Determines Replacement or Repair for the Maintenance of System Failures

  • Jang, Jae-Jin;Lie, Chang-Hoon
    • Journal of the military operations research society of Korea
    • /
    • v.15 no.1
    • /
    • pp.54-62
    • /
    • 1989
  • This paper presents a corrective maintenance model to determine either type of maintenance actions upon failure of the system. Types of maintenance actions considered are minimal repair and replacement. Minimal repair cost is assumed to be random, whereas replacement cost is fixed. A policy, B(t), which determines the type of maintenance action based on the estimated minimal repair cost when the system fails at time t is adopted. To obtain an optimal policy, an expected maintenance cost per unit time is derived and is minimized with respect to B(t).

  • PDF

Software Development for the Construction of Periodic Maintenance System (정기보전체계 구축을 위한 소프트웨어개발)

  • 김재중;김원중
    • Journal of the Society of Korea Industrial and Systems Engineering
    • /
    • v.18 no.35
    • /
    • pp.115-122
    • /
    • 1995
  • This paper is developed with software system for the construction of periodic maintenance. The system includes records of equipment, maintenance work, failure mode analysis and work standards of maintenability, inspection & repair to establish periodic maintenance system. And the software program is designed with user-oriented to analyze maintenance data and maintenance system of periodic interval times. Also machine operator can easily apply maintenance management system in production & manufacturing field. Visual Basic in the environment of Window system is used as computer program language for graphics and data base management in IBM PC.

  • PDF

A Predictive Preventive Maintenance Data Base System Design for Safety (안전성 확보를 위한 예측.예방설비보전 데이터베이스 시스템 설계)

  • Yang, Sung-Hwan;Park, Peom
    • Journal of the Society of Korea Industrial and Systems Engineering
    • /
    • v.20 no.44
    • /
    • pp.123-128
    • /
    • 1997
  • A data base design framework for predictive a preventive-maintenance system is presented in this paper in order to effectively control machines and reduce accident rates in the workplace. The data base is designed to meet general management requirements to evaluate different maintenance strategies. There are seven data files: the equipment list maintenace pesonnel, maintenance history, maintenance specification, spare part, maintenance equipment, and maintenance schedules. Each data base file has several record based upon data acquisition.

  • PDF