• 한국IT서비스학회:학술대회논문집
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• 2007.11a
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• pp.437-440
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• 2007

비즈니스 프로세스를 반영하는 엔터프라이즈 시스템 구현에 SOA가 주목받고 있다. 최근 많은 기업들에서 기존의 시스템을 SOA로 재구축하거나, 새로운 기능들 SOA기반으로 구축하려는 움직임이 활발하다. 그러나 이러한 프로젝트들이 현실적으로 실제 시스템으로 사용되기 어려운 점은 그에 대한 시험방법의 부재이다. 서비스 단위 테스트는 기존의 구현 코드 기반 또는 블랙박스 테스트 방법으로 접근 가능하나, 서비스들의 통합 테스트는 기존의 방법 적용과 더불어 SOA의 서비스 연결 개념을 정확하게 반영해야 할 필요가 있다. 서비스의 일대일 통합이 아닌, 전반적인 서비스들의 연결 구조를 분석하여 서비스 연결 부분에 대한 테스트 방만을 도출하여야 한다. 본 논문은 고 시작으로서 SOA 패러다임을 적용한 서비스 연결 구조를 분석하는 방법을 제안한다. 이는 SOA가 주장하는 비즈니스 프로세스와 어플리케이션 로직과의 분리와 서비스들 사이의 느슨한 연결 규칙을 준수하는 연결구조를 대상으로 한다.

• Journal of Information Management
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• v.43 no.4
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• pp.31-48
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• 2012

Social network analysis was performed on 545 job descriptions in 32 university libraries in Seoul, and drew the job distribution and their relations. Furthermore, for finding the differences according to scale of libraries, this study performed secondary analysis by dividing them two groups. Results show that large scale library show lower density and loose connectivity than small scale library. And while jobs of small scale library were clustered 3 groups, large scale university cluster 4 groups containing 1 technical job and 3 diverse user services. And the jobs that has high specificity, such as catalog or classification, shows high degree centrality in the case of small scale library. Whereas in large scale library they show lower degree centrality, so it can be said that these jobs were performed somewhat independently in large scale libraries.

• Journal of the Economic Geographical Society of Korea
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• v.23 no.3
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• pp.262-275
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• 2020

Due to the pandemic caused by Corona 19, cities around the world have faced a change. As the global economic system weakens, localization is increasing in the product production and distribution system. In addition, consumption patterns have changed in urban where localization has been strengthened. As a result, the way physical places are consumed is also changing. Consumption of large multi-use facilities has drastically decreased, the speed of the collapse of the online and offline boundaries has been accelerated, and the consumption of amenities for sharing tastes has become more subdivided, specialized, and private. A big change also appeared in the urban scene, which is perceived as the concentration of urban amenities. Local scale and locality became important in the urban scene, and a new urban scene element called empathy emerged. Empathy aims to connect socially and emotionally to individuals consuming urban amenities. The pursuit of connectivity, taste consumption, and nostalgia. In this study, the space for cultural consumption based on empathy was named as empathetic space and the concept was explained. The importance of empathic space in the urban scene in the future post-corona situation was presented.

• 한국IT서비스학회:학술대회논문집
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• 2007.05a
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• pp.203-209
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• 2007

그동안 많은 솔루션 벤더들이 다양한 이기종 시스템들의 느슨한 연결 및 유연한 서비스 중개, 용이한 확장성까지 두루 갖춘 통합된 비즈니스 지원플랫폼 모델을 제시해 왔다. 최근 표준 웹서비스 기술과 SOA(Service Oriented Architecture) 개념이 확산되면서, 이를 ASP비즈니스의 서비스 어플리케이션 통합 및 비즈니스 프로세스 통합에 적용하는 사례도 증가하고 있다. KT는 현재 상용서비스 중인 ASP비즈니스 'bizmeka' 의 현황을 분석하고, 시장을 예측하여 다양한 경우의 비즈니스 프로세스들을 모듈화 및 웹서비스화한 후, 이를 메시지 라우팅 및 워크플로우 기능을 통해 실행하는 구조의 SOA 기반 ASP비즈니스 지원플랫폼을 개발하고 있다. 본 논문에서는 ASP비즈니스 지원플랫폼 구축의 기반 기술로서 SOA 및 관련 기술에 대해 살펴보고, KT가 개발 중인 플랫폼의 개념과 모델, 설계 및 구현 내용 등을 소개한다.

• Journal of Korea Multimedia Society
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• v.12 no.1
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• pp.122-129
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• 2009

Incorporating proprietary existing it solutions like legacy systems or vendor specific with new technologies is an expensive and time consuming task. Such situations take place due to the lack of ability of proprietary software to cooperate with other parties or to cooperation only with specific vendor products. Such a situation is undesirable and causes a prolonged adaptation period for new applications. This thesis is to show the new approach to creation of Internet applications in Service Oriented Architecture through loose coupling, introduces fare more flexibility into a system composed of connected applications. This approach allows one to integrate through XML based Web Service and reuse a number of arbitrary services available over the Internet in a complex processes specified as a workflow model.

• The Journal of Society for e-Business Studies
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• v.12 no.2
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• pp.75-93
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• 2007

Recently, Service-Oriented Architecture(SOA) is on the rise to reduce the complexity of IT infrastructure, minimize cost for maintaining it and maximize the productivity and flexibility in business. SOA increases the adaptability by loosely coupling and it's main feature is that three elements such as service provider, service requester and service registry are connected with each other systematically. These make difficult to adopt traditional development methodologies to implement SOA. In this paper, we suggest a service-oriented development process with regard to the aspect of service provider and service requester. The process consists of six phases and each phase sets up with guidelines and artifacts. It can choose the process type along with the goal in Development Planning.

• Journal of the Korea Society for Simulation
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• v.27 no.3
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• pp.65-73
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• 2018

In this paper, we propose a simulation output analysis environment using Elastic Stack technology in order to reduce the complexity of the simulation analysis process. The proposed simulation output analysis environment automatically transfers simulation outputs to a centralized analysis server from a set of simulation execution resources, physically separated over a network, manages the collected simulation outputs in a fashion that further analysis tasks can be easily performed, and provides a connection to analysis and visualization services of Kibana in Elastic Stack. The proposed analysis environment provides scalability where a set of computation resources can be added on demand. We demonstrate how the proposed simulation output analysis environment can perform the simulation output analysis effectively with an example of spreading epidemic diseases, such as influenza and flu.

• The KIPS Transactions:PartD
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• v.18D no.6
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• pp.501-508
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• 2011

A knowledge map, which has been recently applied in various fields, is discovering characteristics hidden in a large amount of information and showing a tangible output to understand the meaning of the discovery. In this paper, we suggested a knowledge map for research trend analysis based on keyword-relation networks which are constructed by using a database of the domestic journal articles in the computer engineering field from 2000 through 2010. From that knowledge map, we could infer influential changes of a research topic related a specific keyword through examining the change of sizes of the connected components to which the keyword belongs in the keyword-relation networks. In addition, we observed that the size of the largest connected component in the keyword-relation networks is relatively small and groups of high-similarity keyword pairs are clustered in them by comparison with the random networks. This implies that the research field corresponding to the largest connected component is not so huge and many small-scale topics included in it are highly clustered and loosely-connected to each other. our proposed knowledge map can be considered as a approach for the research trend analysis while it is impossible to obtain those results by conventional approaches such as analyzing the frequency of an individual keyword.

• Journal of the Korean Geotechnical Society
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• v.25 no.11
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• pp.27-38
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• 2009

In this study, a series of 1 g shaking table model pile tests were carried out in saturated dense and loose sand to evaluate dynamic p-y curves for various conditions of flexural stiffness of a pile shaft, acceleration frequency and acceleration amplitude for input loads. Dynamic p-y backbone curve which can be applied to pseudo static analysis for saturated dense sand was proposed as a hyperbolic function by connecting the peak points of the experimental p-y curves, which corresponded to maximum soil resistances. In order to represent the backbone curve numerically, empirical equations were developed for the initial stiffness ($k_{ini}$) and the ultimate capacity ($p_u$) of soils as a function of a friction angle and a confining stress. The applicability of a p-y backbone curve was evaluated based on the centrifuge test results of other researchers cited in literature, and this suggested backbone curve was also compared with the currently available p-y curves. And also, the scaling factor ($S_F$) to account for the degradation of soil resistance according to the excess pore pressure was developed from the results of saturated loose sand.

• Journal of the Korea Society for Simulation
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• v.24 no.4
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• pp.107-118
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• 2015

Many approaches to agent collaboration have been introduced in military war-games, and those approaches address methods for simulation entity (actor) collaboration within a team to achieve given goals. To meet fast-changing battlefield situations, an actor must be loosely coupled with their tasks and be able to take over the role of other actors if necessary to reflect role handovers occurring in real combat. Achieving these requirements allows the transfer of tasks assigned one actor to another actor in circumstances when that actor cannot execute its assigned role, such as when destroyed in action. Tight coupling between an actor and its tasks can prevent role handover in fast-changing situations. Unfortunately, existing approaches and war-game strictly assign tasks to actors during design, therefore they prevent the loose coupling. To overcome these shortcomings, our Role-based Command Hierarchy (ROCH) model dynamically assigns roles to actors based on their situation at runtime. In the model, "Role" separates actors from their tasks. In this paper, we implement the ROCH model as a component that uses a publish-subscribe pattern to handle the link between an actor and the roles of its subordinates (other actors).