• 산업경영시스템학회지
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• 제34권4호
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• pp.42-48
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• 2011

This paper proposes performance measurement method of quality small-group activity in business. This paper collects and analyzes quality circle activities data respect to tangible and intangible effect in national quality circles competitions festival. This paper proposes QPI (quality-circle performance index) based on Balanced Scorecard for quality small-group activity in quality improvement area. QPI is to measure the performance of quality improvement activities in the business firms. QPI is able to use widely in industries to provide a performance measure of quality small-group activity. In this paper, we propose the application method of QPl.

• The Journal of Asian Finance, Economics and Business
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• 제8권2호
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• pp.195-200
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• 2021

In recent years, Vietnam's economic growth rate has been attributed to the growth of many well-managed industries within Southeast Asia. Among them is the civil construction industry. Construction projects typically take a long time to complete and require a huge budget. Many socio-economic variables and factors affect total construction project costs due to market fluctuations. In recent years, crucial socioeconomic development indicators of construction reached a fairly high growth rate. Also, most infrastructure and construction projects have a high degree of complexity and uncertainty. This makes it challenging to predict the accurate project price. These challenges raise the need to recognize significant factors that influence the construction price index of civil buildings in Vietnam, both micro and macro. Therefore, this paper presents critical factors that affect the construction price index using the fuzzy extent analysis process in an uncertain environment. This proposed quantitative model is expected to reflect the uncertainty in the process of evaluating and ranking the influencing factors of the construction price index in Vietnam. The research results would also allow project stakeholders to be more informed of the factors affecting the construction price index in the context of Vietnam's civil construction industry. They also enable construction contractors to estimate project costs and bid rates better, enhancing their project and risk management performance.

• 정보처리학회논문지D
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• 제14D권7호
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• pp.719-726
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• 2007

최근 NAND 플래시 메모리는 충격에 강한 내구력과, 저 전력 소비, 그리고 비휘발성이라는 특징 때문에 MP3 플레이어, 모바일 폰, 노트북과 같은 다양한 이동 컴퓨팅 장비의 저장 장치로 사용되고 있다. 그러나 플래시 메모리의 특수한 하드웨어적 특징 때문에 디스크 기반의 시스템을 플래시 메모리상에 곧바로 적용 하는 것은 여러 단점들을 발생 시킬 수 있다. 특히 B트리가 구축될 때 레코드의 삽입, 삭제연산 및 노드 분할 연산은 많은 중첩쓰기 연산을 발생하기 때문에 플래시 메모리의 성능을 심각하게 저하시킬 것이다. 본 논문에서는 IBSF로 불리는 효율적인 버퍼 관리 기법을 제안한다. 이것은 색인 단위에서 중복된 색인 단위를 제거하여 버퍼가 채워지는 시간을 지연시키기 때문에 B트리를 구축할 때 플래시 메모리에 데이터를 쓰는 횟수를 줄인다. 또한 다양한 실험을 통하여 IBSF 기법이 기존에 제안되었던 BFTL 기법보다 좋은 성능을 보이는 것을 증명한다.

• 품질경영학회지
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• 제50권3호
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• pp.473-490
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• 2022

Purpose: The purpose of this study is to propose a new useful suggestion to monitor the stability of process by developing a stability ratio or index related to investigating how well the process is controlled or operated to the specified target. Methods: The proposed method to monitor the stability of process is building up a new measure index which is making up for the weakness of the existing index in terms of short or long term period of production. This new index is a combined one considering both stability and capability of process to the specification limits. We suppose that both process mean and process variation(or deviation) are changing on time period. Results: The results of this study are as follows: regarding the stability of process as well as capability of process, it was shown that two indices, called SI(stability index) and PI(performance index), can be expressed in two-dimensional X-Y graph simultaneously. This graph is categorized as 4 separated partitions, which are characterized by its numerical value intervals of SI and PI which are evaluated by test statistics. Conclusion: The new revised index is more robust than the existing one in investigating the stability of process in terms of short and long period of production, even in case both process mean and variation are changing.

• 보건의료산업학회지
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• 제13권4호
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• pp.1-8
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• 2019

Objectives: This study is prepared to understand the past of the KJHSM (Korean Journal of Health Service Management), to analyze the papers in the KJHSM, to identify the research trends during 2007~2018, and to help the future development of research. Methods: The data for the objectives was collected major KCI index and key words of the articles in KCI web site. Results: The KJHSM has good performaces that KCI IF(2 year) is 0.98, Centrality Index(3 Year) is 1.188, Immediacy index is 0.19, and Self Citation Rate(2 Year) is 25.81. Conclusions: In order to improve the academic quantity and quality in the KSHSM, we will need the vision to corporate and participate through more good research results and performance with desirable ethic value.

• 정보관리학회지
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• 제34권3호
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• pp.209-228
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• 2017

이 연구에서는 기존의 h-지수와 g-지수에 대해 달리 해석해보고 새로운 Hirsch 유형 복합 지표인 전치 g-지수를 제안하고자 한다. 새로운 해석에 따라서 h-지수 및 g-지수 산출 그래프의 가로축이 인용빈도 기준값에 해당하고 세로축이 논문 수가 되도록 축을 전치하고, 이로부터 새로운 전치 g-지수를 제안하였다. 한국학술지인용색인 KCI의 문헌정보학 분야 연구자들을 대상으로 적용해본 결과, 제안된 새 지수는 h-지수 및 g-지수에 비해서 변별력이 높으며 연구의 질보다 연구의 양 차이에 더 민감한 것으로 나타났다. 연구를 지속하는 꾸준한 연구자를 그렇지 못한 연구자와 변별해주는 차별화된 특성을 가지고 있으므로 전치 g-지수는 다면적인 연구 성과 평가에 도움이 될 것으로 기대된다.

• 센서학회지
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• 제28권1호
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• pp.64-70
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• 2019

Wireless sensors have been developed in numerous ways for enhancing the convenience of installation, management and maintenance of sensors. Energy harvesting wireless sensors, which can collect energy from the external environment for permanent usage without the need of recharging and exchanging batteries, have been developed and employed used in Internet of Things and at various industrial sites. Energy harvesting wireless sensors are significantly affected by the sensor lifespan to sudden variation in the external environment. Furthermore, reduction in the sensor operating timespan can greatly affect the characteristics of the devices connected through a network. In this paper, a system performance index is proposed that can comprehensively evaluate the lifespan of a solar cell wireless sensor, determine the characteristics of devices connected to the associated network, and recommend dynamic power distribution control for improving the system performance index. Improvement in the system performance index was verified by applying the proposed dynamic power distribution control to an air conditioner network system using a solar cell wireless sensor. Obtained results corroborate that the dynamic power distribution control can extend the lifespan of the incorporated wireless sensor and reduce the air conditioner's power consumption.

• 품질경영학회지
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• 제38권1호
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• pp.20-33
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• 2010

This study investigates the relationships of total quality management (TQM), organizational learning (OL) activities and business performance and examines the partial mediation effect of OL activities on business performance in Korean industrial manufacturing setting. Main target sample firms were all manufacturing companies listed in the Korea Composite Stock Price Index (KOSPI) and 206 firms participated. This study theoretically develops a conceptual model with 3 hypotheses regarding how TQM practices influence OL activities and how the OL activities partially mediate between the TQM practices and business performance. To examine these hypotheses, Structural Equation Modeling (SEM) was employed and an alternative model which includes a path between errors of leadership factor and OL construct was developed. The findings are TQM practices cannot directly influence business performance but indirectly impact business performance through OL activities. This study found that OL activities playa role as firms' critical competency to improve business performance.

• 한국도로학회논문집
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• 제18권4호
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• pp.9-18
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• 2016

PURPOSES : This study aimed to evaluate the performance of pavement management works and to develop a function for estimating the level of service (LOS) and cost of service (COS) for the systematic and quantitative management of pavement performance in the public sector. METHODS : The International Roughness Index (IRI) was used as the performance index for pavement management. Long-term pavement performance data for a period of 7 years (2007-2014) collected by the National Highway Pavement Management System and historical maintenance budget data published by the South Korean government were used to develop the LOS-COS function. Based on the function, a model for estimating the appropriate budget as well as the network conditions was suggested. RESULTS : There was high degree of correlation between pavement performance and the investment level (R = - 0.74). The developed LOS-COS function suggested that the unit cost to improve the network IRI to 1 m/km was 32.6 billion KRW. Further, the maintenance costs normalized with respect to the LOS levels were LOS-A = 88.2 billion KRW, LOS-B = 55.6 billion KRW, and LOS-C = 23.0 billion KRW. CONCLUSIONS : This study proposes a simple way of developing a LOS-COS function. It also shows how to develop a network budget demand and condition estimation model using the LOS-COS function. In addition, it is the first attempt to evaluate the road maintenance budget in South Korea. It is expected that these results will help in the negotiations between the road managers and budget makers.

• 정보관리학회지
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• 제26권3호
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• pp.377-394
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• 2009

본 연구는 기존의 연구성과 분석의 한계를 극복하고 영향력이나 파급효과 등 질적 중심의 연구성과 분석을 위해 텍스트 마이닝, 인용 분석 등을 활용한 새로운 계량정보학적 분석지표를 제안하였다. 즉, 논문품질지수, 인용 영향력지수, 지식확산지수, 국제협력연구지수, 우수논문 생산지수 등 새로운 연구성과 분석지표를 제안하여 질적인 측면을 중심으로 한 연구성과 분석이 가능하도록 하였다. 그리고 제안된 지표를 활용하여 사례분석을 수행하여 그 가능성을 확인하였다.