• 대한안전경영과학회지
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• 제10권4호
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• pp.199-207
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• 2008

Many logistics enterprises have made efforts to achieve low costly and high efficient logistics network. The cross-docking system can be a good solution for them. However, it requires tight schedule and all-night operation inevitably for realization of ideal cross-docking. These causes the difficulty of the attainment of daily delivery target and the leave of delivery service persons. In this paper, we develop the line-haul and shuttle service compromised cross-docking model in order to solve the problems practically. We apply the storage process with the cross-docking system and the direct cross-docking between line-haul and shuttle services. The simulation model validates the shorter delivery time by the developed model than the present model.

• 대한방사선치료학회지
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• 제10권1호
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• pp.30-44
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• 1998

Accurate delivery of doses using a high dose rate(HDR) brachytherapy, remote afterloading system(RALS) depends on knowing the strength of the radioactive source at the time of treatment, the precision and consistency of the timer, and the ability of the unit to position the source at the proper dwell location along the applicator. Periodic Quality Assurance(QA) on HDR machines is a part of the standard protocol of any user. The safety of the patient & staff, positional accuracy, temporal accuracy, and dose delivery accuracy are periodically(weekly, quarterly, monthly) estimated using HDR source(Ir-192), treatment planning devices, measurement devices, and overall treatment devices with regard to treatment delivery. The overall measurement results are estimated successfully and assessed its clinical significance. As a result, our HDR brachytherapy units has been very accurate until now. The QA program protocol permits routine clinical use and provides a high confidence level in the accurate operation of HDR units. Therefore, regular QA of HDR brachytherapy is essential for successful treatment.

• 한국농공학회논문집
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• 제55권4호
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• pp.45-53
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• 2013

Efficient water operation and management of an irrigation system plays an important element in the sustainability of irrigated agriculture. An agricultural water is delivered in many open canals of irrigation delivery system by reservoirs. The poor water distribution and management in an irrigation system is a major factor leading to low water efficiency. It is necessary to compare the estimated irrigation demands with the actual water supplies for decision making to maintain the water supply according to demand strategy. Smarter water management, new technologies and improvement of water management system, is essential to solve the problem of water efficiency and availability. In this paper, the irrigation efficiencies according to water delivery performance indicator were measured with automatic water gauge at irrigation canals, and calculated from spatial and temporal distribution of water supply for the lack of planning in water delivery. The analysis of results are obtain an insight into possible improvement methods to develop canal water management policies that enable irrigation planners to optimally manage scarce available water resources.

• 한국컴퓨터정보학회논문지
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• 제23권9호
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• pp.35-42
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• 2018

In this paper, we propose an optimal streaming service method based on Hybrid CDN/P2P architecture. Recently, video streaming utilizes a CDN (Content Delivery Network) operation technique based on a Proxy Server, which is an end node located close to a user. However, since CDN has a fixed network traffic bandwidth and data information exchange among CDNs in the network is not smooth, it is difficult to guarantee traffic congestion and quality of image service. In the hybrid CDN/P2P network, a data selection technique is used to select only the data that is expected to be continuously requested among all the data in order to guarantee the QoS of the user who utilizes the limited bandwidth efficiently. In order to search user requested data, this technique effectively retrieves the storage information of the constituent nodes of CDN and P2P, and stores the new image information and calculates the deletion priority based on the request possibility as needed. Therefore, the streaming service scheme proposed in this paper can effectively improve the quality of the video streaming service on the network.

• International Journal of Computer Science & Network Security
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• 제23권6호
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• pp.107-114
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• 2023

Successful implementations of DevOps practices significantly improvise software efficiency, collaboration and security. Most of the organizations are adopting DevOps for faster and quality software delivery. DevOps brings development and operation teams together to overcome all kind of communication gaps responsible for software failures. It relies on different sets of alternative tools to automate the tasks of continuous integration, testing, delivery, deployment and monitoring. Although DevOps is followed for being very reliable and responsible environment for quality software delivery yet it lacks many quantifiable aspects to prove it on the top of other traditional and agile development methods. This research evaluates quantitative performance of DevOps and traditional/ agile development methods based on software metrics. This research includes three sample projects or code repositories to quantify the results and for DevOps integrated selective tool chain; current research considers our earlier proposed and implemented DevOps hybrid model of integrated automation tools. For result discussion and validation, tabular and graphical comparisons have also been included to retrieve best performer model. This comparative and evaluative research will be of much advantage to our young researchers/ students to get well versed with automotive environment of DevOps, latest emerging buzzword of development industries.

• 한국사회복지학
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• 제36권
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• pp.147-173
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• 1998

최근 들어 국내외에서 '여성복지'에 대한 관심의 증가와 더불어 사회복지정책이나 서비스를 성인지적(gender-sensitive)관점에서 분석하는 작업이 시도되고 있다. 그러나 아직도 클라이언트로서의 여성에 대한 관심은 그리 많지 않으며 여성을 서비스의 주 이용자로 하는 여성복지서비스 전달체계에 관한 연구 또한 미흡한 실정이다. 이에 본 연구에서는 여성복지서비스 전달체계의 현황을 개괄하고, 전달체계의 기능이 서비스 효과에 미치는 영향을 분석하였다. 이를 위해 여성복지담당 공무원인 여성복지계장과 여성복지상담원을 대상으로 설문조사를 실시했다. 이들의 주관적 평가내용에 기초하여 통합성, 접근용이성, 지속성, 적합성, 노력성, 전문성의 6가지 원칙으로 여성복지서비스 전달체계의 기능을 평가하고, 직무만족도와 업무효과를 중심으로 전달체계의 서비스효과를 측정하였다. 분석결과를 정리하면 1)여성복지계장과 여성복지상담원 모두 전달체계의 기능 중 노력성(재정과 인력의 충분성)이 미흡하다고 지적하였다. 2)업무효과에서는 여성복지계장의 경우 대부분 긍정적인 평가를 하고 있으나 여성복지상담원은 업무내용에 따라 비교적 긍정적인 평가와 부정적인 평가가 엇갈렸다. 3)직무만족도에서는 여성복지계장과 여성복지상담원 모두 동료나 지도감독자, 상담소 이용자 등과의 인간적인 관계에 있어서는 만족하고 있으나 업무수행과 관련된 부분에서는 불만족스러워하고 있었다. 4)전달체계 기능 중 업무효과에는 전문성(계장)과 접근용이성(상담원)이, 직무만족도에는 노력성(계장), 통합성, 접근용이성, 적합성(상담원)이 유의미한 영향을 미치는 것으로 나타났다. 집단에 따라 상이한 결과를 보이긴 했어도 전달체계의 접근용이성, 적합성, 통합성, 노력성 및 전문성이 부분적으로 서비스의 효과와 만족도에 통계적으로 유의미한 영향을 미치는 것으로 나타난 것은 전달체계의 기능과 서비스의 효과성간에 유의미한 관계가 있음을 어느 정도 뒷받침해주고 있다.

• International Journal of Advanced Culture Technology
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• 제6권4호
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• pp.87-96
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• 2018

Meteorological information is essential for the safe operation of aircraft. Many organizations both at home and abroad provide meteorological services for small aircraft flying at a low altitude as a part of open public service and have performed relevant studies. Recently, such a service has been expanded to an online platform in order to deliver information more efficiently. The ultimate goal of this study is to improve the meteorological service for small low-altitude aircraft that mostly travel a short distance for a short time. To achieve this goal, this study considered requirements for developing an effective information delivery system and conducted a survey of user requirements to derive the necessary information that could be used to develop a real service.

• 한국자동차공학회논문집
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• 제9권1호
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• pp.94-101
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• 2001

In this paper, the combustion improvement effects of alcohol-diesel oil blend fuel were investigated in a visualization engine. As a result of experiment, it was found out that the combustion chamber of deep dish type and re-entrant type at the same operation condition. However, when the con-tent of alcohol exceeded 10% of total fuel delivery, the combustion of alcohol-diesel oil blend fuel was worse than that of diesel oil. The maximum blend quantity of ethanol which is not ignited in the re-entrant type combustion chamber was estimated at approximately 40% of total fuel delivery. So, it is necessary to blend appropriate quantity of a volatility fuel such as alcohol in order to improve combustion.

• 한국항공운항학회지
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• 제18권2호
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• pp.46-53
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• 2010

In the aspect of the nature of aircraft maintenance work on divisible tasks carried out by a wide range of operation and expertise, any information transmission problems will not only cause a threat to flight safety but also reduce productivity by keeping the team from fulfilling its mission of delivering aircraft with airworthiness. In this regard, this study firstly identify the current status of information of aircraft maintenance and factors disturbing information transmission. Then, this article also find out the level of information culture of the AMT(Aircraft Maintenance Technicians) and problems in using information. Finally, suggestions on the model of the positive information culture in a field of aircraft maintenance through efficient use of the information including safety will be followed.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2003년도 춘계학술대회
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• pp.215-221
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• 2003

In today's rapidly changing business environment, quality of responsiveness to customer requirements for short order cycles and on time delivery is becoming more important and considered as one of critical success factors in supply chain management. Yet despite its importance on reducing transportation cost and improving customer service, little attention has been given to the transportation planning system in Korea SI industry. In this paper, we present development of transportation planning system especially to deal with vehicle routing problem which has the goal to minimize the costs of daily transportation operation and to maximize customer delivery service. The system architecture with other enterprise application is presented and real-world constraints are well incorporated into the system by combining constraints programming and meta heuristics.