• 대한인간공학회지
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• 제29권4호
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• pp.647-654
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• 2010

In a service environment, the spatial layout is an important factor that has a great impact on customers' behavioral characteristics including wayfinding and purchasing. Previous studies have shown a gap between marketing, focusing solely on profitability and satisfaction, and architecture, looking only into efficiency of pedestrian flow. To balance such disparity, this study suggests an integrated approach for assessing behavioral patterns in complex service environments. With the objective that complex service environments should aim to increase its profitability and efficiency while guaranteeing customer satisfaction, quantitative metrics was developed for evaluation. The metrics was defined to use data from behavior observation including path tracking, population counting, and gaze analysis, while previous studies have relied on abstract survey methods that were prone to sampling errors and loss of data. For validation of the metrics in a real world setting, a case study was conducted at 4 train stations in Korea. In the case study, experiments were conducted to gather the required data in all 4 train stations, while their physical layouts were also analyzed. With the results from the case study, comparative evaluation of the 4 train stations in terms of behavioral efficiency was possible, together with a discussion on the effect of their physical settings.

• 디지털산업정보학회논문지
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• 제7권1호
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• pp.1-9
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• 2011

In this paper, Wireless sensor network technology applied to various greenhouse agro-industry items such as horticulture and local specialty etc., we was constructed automatic control system for optimum growth environment by measuring growth status and environmental change. existing monitoring systems of greenhouse gather information about growth environment depends on the temperature. but in this system, Can be efficient collection and control of information to construct wireless sensor network by growth measurement sensor and environment monitoring sensor inside of the greenhouse. The system is consists of sensor manager for information processing, an environment database that stores information collected from sensors, the GUI of show the greenhouse status, it gather soil and environment information to soil and environment(including weather) sensors, growth measurement sensor. In addition to support that soil information service shows the temperature, moisture, EC, ph of soil to user through the interaction of obtained data and Complex Growth Environment information service for quality and productivity can prevention and response by growth disease or disaster of greenhouse agro-industry items how temperature, humidity, illumination acquiring informationin greenhouse(strawberry, ginseng). To verify the executability of the system, constructing the complex growth environment measurement system using wireless sensor network in greenhouse and we confirmed that it is can provide our optimized growth environment information.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2002년도 추계학술대회 논문집
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• pp.85-89
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• 2002

Development of distributed simulation environment must be required in order to simulate the distributed models regionally and inter-operate with running simulations individually, Simulation based on DEVS formalism is difficult to simulate the distributed models. DEVS formalism is modeling methodology. To specify model, this formalism separates behavior and structure, therefore it is able to design complex model easily. HLA is standard framework of distribute simulation environment, It is defined to facilitate the interoperability and the reusability. RTI (Run Time Infrastructure) is software that provides common service to simulation systems and implementation of the HLA Interface Specification. Method of implementation is that modules cooperating with RTI are added to simulator on DEVS simulation environment. On the DEVS simulation environment (DEVS-Obj -C) that already developed, Highest class of abstract simulator uses service that RTI provide, then This environment is able to change DEVS model into Federate and run distribute simulation that inter-operates with the RTI. Because this distributed simulation environment includes convenience of modeling that obtains through the DEVS formalism and accompanies HLA standard, this environment make it possible to simulate with_ complex systems and heterogeneous simulations

• 대한전자공학회논문지TC
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• 제48권4호
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• pp.61-68
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• 2011

이벤트 기반 서비스 기술은 실시간으로 발생하는 이벤트를 감지하고 분석하여 이에 대한 반응으로 서비스가 연동되는 기술로, 실시간 기업 환경 구축이나 유비쿼터스 서비스 환경 구축을 위한 핵심 기반 기술이다. 실시간 기업 환경에서 요구되고 있는 기업 내 업무 프로세스에서 발생하는 다양한 정보를 실시간 모니터링, 분석하여 변화에 대한 신속한 대응을 제공하거나, 유비쿼터스 서비스 환경에서 상황에 맞게 적시에 맞춤형서비스를 제공하기 위해서는 이벤트 기반의 서비스 기술이 요구된다. 최근 이벤트 중심의 비즈니스 프로세스로 복합 이벤트 처리(CEP : Complex Event Processing) 방식이 사용된다. 복합 이벤트 처리 방식은 여러 이벤트 소스로부터 발생한 이벤트를 대상으로 이벤트들의 영향을 분석하여 대응되는 액션을 처리하는 방식으로 가장 핵심이 되는 기술은 어떻게 사용자에게 의미있는 이벤트(복합 이벤트)를 검출하는가이다. 기존의 연구에서는 복합 이벤트를 구성하는 모든 이벤트가 발생하지 않아도 부분적으로 발생하는 이벤트에 대해 계속적으로 연산을 수행하여 많은 연산과 많은 메모리를 소비하는 문제점이 있다. 이러한 문제를 해결하기 위해 본 논문에서는 대용량의 스트림 데이터에서 발생한 모든 이벤트를 처리하지 않고 응용 계층에서 등록한 복합 이벤트를 구성하는 모든 이벤트가 발생하면, 복합 이벤트를 처리하는 이벤트 검출 기법을 제안한다. 제안 하는 기법은 먼저 비트맵 인덱스를 이용하여 이벤트의 발생 유/무를 관리한다. 또한 복합 이벤트 질이의 마지막 이벤트를 트리거 이벤트로 정의하며, 이 트리거 이벤트가 발생하는 시점을 통해 이벤트의 발생을 표시한 비트맵 인덱스에 복합 이벤트를 구성하는 모든 이벤트의 발생 유/무를 검사하여 모든 이벤트가 발생하였다면, 연산을 수행할 수 있도록 제안한다. 제안하는 기법은 실험을 통해 복합 이벤트를 구성하는 이벤트의 검사를 매번 수행하지 않고 모든 이벤트가 발생하였을 때에만 연산을 수행함으로 불필요한 연산을 방지하고, 처리하는 이벤트의 수를 감소시켜 연산의 효율성을 증가 시켰다.

• 농촌계획
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• 제18권2호
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• pp.13-26
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• 2012

This study aims to present the policy issues and direction of sub-urban residential complex by analyzing the settlement environment and life satisfaction. For the purpose, 10 sub-urban residential complexes in Chungnam Province were surveyed for general situation, physical environment, social environment, economic environment. The results are as follows; 1) The satisfaction in the physical environment is more higher in case of the complex created by the public organization. 2) The physical environment is an important factor in the determinant of the settlement, while the economic environment have a relatively lower impact. 3) The residents community is the more active, the satisfaction in the social environment is the more improved. 4) The source of income or the activity of consumption doesn't have an effect on the satisfaction in the economic environment. On the basis of this study, three programs for improvement of sub-urban residential complex policy were suggested. First, the various information and counseling service should be provided to attract city dwellers. Second, the policy on the development of sub-urban residential complex has to consider residential preference factors and improve the quality of life. Third, to increase the life satisfaction, the residents community should be activated and especially the activation of community with residents in other village is very important.

• 경영과학
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• 제26권1호
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• pp.113-126
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• 2009

By the newly emerging network access technology, we face the new heterogeneous network environment. Focusing on the co-existence of multiple access network technology and the complex service needs of users, the wireless service operators should present the stable service quality for every user. For this, the service operators should build the new operation framework which combine the pre-established network and newly adopted one. Our problem is finding the optimal heterogeneous network operation framework. We suggest market-based marginal cost function for evaluating the relative value of resource of each network and develop the whole new heterogeneous network operation framework. To test the applicability of developed operation framework, we build large-scale JAVA simulator. By this development, we can easily test the new network environment in practical engineering field.

• 한국환경과학회지
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• 제29권5호
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• pp.507-517
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• 2020

New towns and large multi-family housing complexes are being built in the capital region of Korea, with the goal of creating safe and pedestrian-friendly cities. Traffic accidents in such residential complexes, however, is on the rise, creating social problems. While there have been many previous studies on problems with pedestrian environment; there is a dearth of studies that take design-based approach to ensure safety in pedestrian environment within residential complexes. Therefore, this study aims to prevent traffic accidents by properly planning pedestrian environment within multi-family housing complexes, in addition to emphasizing theories related to planning safer pedestrian environment in general. This study found the following design directions required to improve the design theory of pedestrian safety in multi-family housing complexes: (1) Linking traffic facilities and residential complex spaces in Korea; (2) Considering implementation of United Kingdom road systems; (3) Establishing appropriate objectives for each residential complex based on case study. In response to these findings, the study selected the A84BL complex in Hwaseong Dongtan 2 Complex located in Dongtan-myeon, Hwaseong-si in Gyeonggi Province, Korea. Items that can be implemented, as well as spatial design directions, were discussed with a focus on private vehicles, pedestrians, and service vehicles.

• 한국멀티미디어학회논문지
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• 제19권2호
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• pp.300-307
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• 2016

Cloud computing that provide a elastic computing service is more complex compared to the existing computing systems. Accordingly, it has become increasingly important to maintain the stability and reliability of the computing system. And troubleshooting and real-time monitoring to address these challenges must be performed essentially. For these goals, the handling of the log data is needed, but this task in cloud computing environment may be more difficult compared to the traditional logging system. In addition, there are another challenges in order to have the admissibility of the collected log data in court. In this paper, we design secure logging service that provides the management and reliability of log data in a cloud computing environment and then analyze the proposed system.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 춘계 학술논문 발표대회
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• pp.255-256
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• 2015

House supplying rate of building facilities is over 100% in 2008. In modern society, many people are thus interested in maintenance phase of building facilities by environment improvement budget because 20 years or more of building facilities are increasing rapidly. Maintenance of building facilities is depending on various factors that impact on the environment improvement budget of building facilities. However, Various methods and factors are made up complex relationships. I will analyze that environment improvement budget associated with floor, gross area, local, school type, service life and other elements.

• 산업경영시스템학회지
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• 제26권2호
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• pp.62-67
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• 2003

This paper deals with a First-Come, First-Served queueing model to analyze the behavior of heterogeneous finite source system with a single server Each sources and the processor are assumed to operate in independently Markovian environments, respectively. Each request is characterized by its own exponentially distributed source and service time with parameter depending on the state of the corresponding environment, that is, the arrival and service rates are subject to random fluctuations. Our aim is to get the usual stationary performance measures of the system, such as, utilizations, mean number of requests staying at the server, mean queue lengths, average waiting and sojourn times. In the case of fast arrivals or fast service asymptotic methods can be applied. In the intermediate situations stochastic simulation Is used. As applications of this model some problems in the field of telecommunications are treated.