• 한국통신학회논문지
• /
• 제19권10호
• /
• pp.2014-2027
• /
• 1994

이 논문에서는 서비스 우선순위가 다른 2개의 독자적인 입력 스트림을 가지는 큐잉 모델을 연구하였다. 구체적으로 head-of-line 우선 순위가 적용되는 IBP+BP/D/I시스템을 분석하였는데, 여기에는 IBP는 Interrupted Bernoulli Process를 BP는 Bernoulli Process를 표시한다. BP 스트립은 IBP 스트립에 대하여 서비스 우선권을 가진다. 본 논문은 이 우선 순위 큐에 대하여 시스템 상태의 안정상태분포와 각 클래스 별 고객의 대기 시간분포 및 출발시간 간격분포를 구할 수 잇는 정확한 분석방법을 제공하고 있다. 우선 순위가 다른 두 입력스트림의 다양한 파라미터들이 시스템의 성능에 어떠한 영향을 미치는지 보여줄 수 있는 수치적 예들도 제시하였다.

• 한국경영과학회:학술대회논문집
• /
• 한국경영과학회 2008년도 추계학술대회 및 정기총회
• /
• pp.191-196
• /
• 2008

This paper presents an evolutionary algorithm for goal programming with preemptive priority. To do this, an evolutionary strategy is suggested which search for the solution satisfying the goals in the order of the priority. Two-sided assembly line balancing problems with multiple goals are used to validate the applicability of the algorithm. In the problems, three goals are considered in the following priority order: minimizing the number of mated-stations, achieving the goal level of workload smoothness, and maximizing the work relatedness. The proper evolutionary components such as encoding and decoding method, evaluation scheme, and genetic operators, which are specific to the problem being solved, are designed in order to improve the algorithm's performance. The computational result is reported.

• 유통과학연구
• /
• 제15권10호
• /
• pp.81-92
• /
• 2017

Purpose - One of the main objectives of this paper is to identify the most effective type of social media and to analyze the priority of blogs by their informational attributes in the aspect of their impacts on word-of-mouth intention(WOM) in on-line markets. Research design, data, and methodology - We set 'attitude' variable in the middle to see if there is mediating effects between blog information and word-of-mouth intention. We conducted a survey by questionnaire and received 206 answers. Employing the OLS statistical methods through the SPSS package, we tested our hypotheses. Results - Some of the main results are the followings. First, blog, micro-blog, and profile-based services showed significant effects on WOM, while Internet community and mini-homepages are not significant. Second, blog has positive impacts on WOM. Third, attitude has perfect mediating effects between blog and WOM. Fourth, in terms of effects on WOM, interactivity shows the first priority and reliability and usability follows. Finally, attitude has a more significant effect for users of 3 types of blog compared with those of 2 types. Conclusions - In this paper, we analyzed the effects of social network services by type and identified the priority among various attributes of information contained in blogs. It would provide businesses with viable strategic options to establish public relations in their sales promotion.

• 전기학회논문지
• /
• 제64권10호
• /
• pp.1493-1500
• /
• 2015

For efficient and economical train operation in low-density railway line, on-board oriented train control system, which reduces expensive wayside equipment, is being developed. In this paper, we discuss a tram signal priority strategy which enables efficient and safe train operation when the developing system is applied to train-tram railway environment. Based on the well-known transit signal priority strategies, we develop a tram signal priority algorithm and conduct simulations by using model-based systems engineering (MBSE) tool. Various considerations such as operation procedure, linkage to existing road traffic system, applicability with respect to crossroad types, and so on, are also dealt with.

• 한국의류산업학회지
• /
• 제13권2호
• /
• pp.155-161
• /
• 2011

This thesis, concerning Femme Fatale Images Costume Form in paintings viewed from DeLong's Theory, analyzed frequency and traits on the basis of DeLong's Form Observation Theory and drew out the result as followings. First, Costume Form was mostly open, whole, planer integration, rounded, and indeterminate. The styles were similar each other. Second, surface structure was expressed by line & shape, color, texture, and pattern of which color had the highest priority. Next, line & shape and texture had the priority in order. They were expressed through intereaction. Third, the traits of Costume Form were a similar color harmony or large light and darkness contrast+soft quality+interaction by ambiguous line & shape. So, Femme Fatale Image in paintings was expressed by soft and pure images and erotic images.

• 대한산업공학회지
• /
• 제11권2호
• /
• pp.1-9
• /
• 1985

In this study, two stage transfer line with limited repair capability is modeled to formulate optimal dynamic repair priority policy. The method of Markov Chains is used to analyze the analytical model of this line. An efficient algorithm is developed, utilizing the block tridiagonal structure of the transition probability matrix, to obtain the steady state probabilities and system performance measures, such as the steady state production rate of the line and the average in-process inventory in the interstage buffer.

• 한국멀티미디어학회논문지
• /
• 제16권4호
• /
• pp.493-501
• /
• 2013

대규모 다중사용자용 온라인 게임 시스템의 당면 과제는 동시에 많은 사용자들에게 실시간적 응답 시간을 제공하는 것이다. 다수의 사용자들이 요청한 작업은 제한 시간 내에 응답이 제공되어야 하기 때문에 대규모 다중사용자용 온라인 게임 시스템은 일종의 연성 실시간 시스템이다. 클라이언트 이벤트들은 게임 세계의 본질에 따라 상이한 시간 요건과 일관성 요건을 가지고 있다. 이러한 요건들은 CPU 처리시 상이한 우선순위를 갖는 태스크들을 유발하게 된다. 이러한 태스크들의 시간적 요건을 충족하기 위하여 본 논문에서는 일시적 과부하가 발생한 경우 우선순위가 더 높은 태스크들에게 더 많은 CPU 대역폭을 우선적으로 할당하려는 우선순위 스케쥴링 기법들이 제시된다. 제시된 스케쥴링 기법은 우선순위가 높은 태스크일수록 종료시한 내에 성공적으로 종료되는 수를 최대화하며 종료시한이 경과된 이후 종료된 태스크들의 평균 지연시간을 최소화함으로써 대규모 다중사용자 온라인 게임 시스템의 실시간적 성능을 향상시킬 수 있다. 제시된 스케쥴링 기법의 성능은 다양한 시뮬레이션 실험을 통하여 측정되었다.

• 한국산업융합학회 논문집
• /
• 제9권4호
• /
• pp.285-291
• /
• 2006

A traffic accident is occurred by unbalance of reciprocal action of driver, vehicle and road conditions. To prevent the traffic accident, rapid and perfect road improvement is needed. But most of road improvement plans have insufficient budget. So decision maker has to determine the priority to invest. A model in this study, analyzing the effect of road conditions to the traffic accident, helps to decide the priority in road improvement. This study considered five danger indices ; 1) traffic volume, 2) speed variance, 3) vehicle mixing rate, 4) curved line radius, and 5) difference between design speed and running speed. Danger rate composed by five indices can be a scale of priority of improvement. The model in this study didn't consider all of factors about traffic accident. But this study can propose the methodology for traffic safety policy. For deriving the model, this study used data from highways in Korea and United States. Therefore the model has to apply the highways only.

• Journal of the Korean Society for Industrial and Applied Mathematics
• /
• 제7권1호
• /
• pp.15-23
• /
• 2003

ATM networks provide the various kinds of service which require the different Quality of Services(QoS) such as loss and delay. By statistically multiplexing of traffics and the uncertainty and fluctuation of source traffic pattern, the congestion may occur. The leaky bucket scheme is a representative policing mechanism for preventive congestion control. In this paper, we analyze the HOL(Head-of-Line) priority leaky bucket scheme. That is, traffics are classified into real-time and nonreal-time traffic. The real-time traffic has priority over nonreal-time traffic for transmission. For proposed mechanism, we obtain the system state distribution, finally the loss probability and the mean waiting time of real-time and nonreal-time traffic. The simple numerical examples also are presented.

• 한국산업정보학회논문지
• /
• 제26권5호
• /
• pp.69-77
• /
• 2021

본 논문에서는 기업의 IT시스템에 대한 위협에 대응하고자 하는 기업의 자산을 지켜주는데 매우 중요한 영역인 보안관제 위협정보를 확인하고자 한다. 보안관제는 보안 장비에서 발생한 이벤트, 로그를 중심으로 실시간 분석하여 위협을 판정하고 대응한다. 보안관제 업무에 있어서 우선적으로 위협정보를 평판정보와 분석정보로 구분하여 우선순위를 도출하고자 한다. 평판정보는 Hash, URL, IP, Domain으로 구성하였으며, 분석정보는 E-mail, CMD-Line, CVE, 공격동향정보로 구성하여 분석하였다. 연구결과, 평판정보의 우선순위가 상대적으로 높았으며 위협정보에 대한 정확성과 대응성을 높이는 것에 의의가 있다.