• 한국전자거래학회지
• /
• 제12권2호
• /
• pp.17-30
• /
• 2007

ebXML은 비즈니스 프로세스를 UMM이란 방법론으로 모델링하고 BPSS로 구현한다. 현재의 UMM과 BPSS는 UML 1.4를 기반으로 개발되었다. 그러나 비즈니스 프로세스 모델링에 좀 더 적합하도록 변경된 UML 2.0을 UMM에 도입할 경우 표현력과 유지보수의 효율성 등은 향상되겠지만 일부 기능은 BPSS로 구현이 불가능해 진다. 본 논문에서는 먼저 UML 2.0의 새로 도입된 요소들 중에서 ebXML을 향상시키는 데 도움을 줄 수 있는 개념들을 소개한다. 그리고 그 개념들이 UMM에 도입되었을 때 이를 구현할 수 있도록 BPSS를 보완하는 방법을 제안한다.

• 한국CDE학회논문집
• /
• 제15권1호
• /
• pp.11-23
• /
• 2010

A flexible and correct model of the activity flows is required for workflows in product development environments. In particular, the design activity flows are not known until run-time, and conventional approaches have limit to handle this situation because they cannot predefine all the potentially reachable paths. Thus, the structure of the workflow model must be flexible enough to describe variety in workflow design and accommodate dynamic changes during workflow execution. In this paper, we provide the general primitive axioms and change patterns based on event calculus for dynamic workflow specification and execution mechanisms in product development environments. Also, we describe how to execute the workflow dynamically based on the workflow specification and workflow change patterns using abductive planning technique.

• 한국군사과학기술학회지
• /
• 제3권2호
• /
• pp.156-165
• /
• 2000

This paper describes modeling and simulation of automotive forward collision warning and avoidance system using CASE(Computer-Aided Systems Engineering) tool. The system is composed or many sensors, a controller, warning devices, brakes and etc. The system was modeled by one activity chart, fourteen state charts and one module chart. Rear-end collision scenarios was generated by Simulink and used to support Stalemate model. The resulting model was used to evaluate the correctness of function and behavior of the system. A simulator for the system has been designed and used to validate the model under realistic operating conditions in the laboratory. To model and simulate the system's functionality and behavior brings clarity to system design early in the system development.

• Korean Chemical Engineering Research
• /
• 제44권2호
• /
• pp.129-135
• /
• 2006

본 연구에서는 용매로써 sulfolane을 사용하고 2기의 증류탑을 이용하여 톨루엔이 과량 함유된 비 방향족 혼합물로부터 고 순도의 톨루엔을 생산해 내는 추출증류공정에 대한 전산모사 작업을 수행하였다. Sulfolane 용매를 이용한 추출증류공정의 모사를 위한 열역학 모델식으로는 NRTL 액체 활동도계수 모델식을 사용하였으며 범용성 화학공정 모사기인 Aspen Plus 12.1을 사용하였다. 모사 결과 최종제품으로 얻어진 톨루엔의 순도는 99.8 wt％였으며, 원료에 대한 회수율은 99.65％로 나타남을 알 수 있었다.

• 국제학술발표논문집
• /
• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
• /
• pp.395-398
• /
• 2011

This paper introduces stochastic cash-flow modeling integrated with simulation based scheduling. The system makes use of CPM schedule data exported from commercial scheduling software, computes the best fit probability distribution functions (PDFs) of historical activity durations, assigns the PDFs identified to respective activities, simulates the schedule network, computes the deterministic and stochastic project cash-flows, plots the corresponding cash flow diagrams, and estimates the best fit PDFs of overdraft and net profit of a project. It analyzes the effect of different distributions of activity durations on the distribution of overdrafts and net profits, and improves reliability compared to deterministic cash flow analysis.

• 수산경영론집
• /
• 제50권3호
• /
• pp.43-57
• /
• 2019

Recreation specialization and consumptive orientation are two important constructs to understand anglers' attitudes and behaviors. Although theoretical explanations and previous studies in different countries addressed the relationships between the two constructs, limited support has been provided in a context of anglers in Korea. This study developed a conceptual model explaining the causal relationships between recreation specialization, anglers' preferences (activity-specific and activity-general) and consumptive orientation. An on-site survey was conducted to anglers in the city of Busan and Gyeongnam province in 2018. A total of 614 data were analyzed using Structural Equation Modeling The study results showed that recreation specialization positively and indirectly influenced consumptive orientation via anglers' activity-specific and activity-general preferences. Theoretical and practical implications are further discussed.

• 한국방사성폐기물학회:학술대회논문집
• /
• 한국방사성폐기물학회 2018년도 춘계학술논문요약집
• /
• pp.379-380
• /
• 2018

• International Journal of Quality Innovation
• /
• 제6권2호
• /
• pp.17-30
• /
• 2005

The Internet can provide benefits obtained from changing the structure of a business, such as emphasizing the importance of different types of personnel. In addition, the Internet alters the process for business activity, both within and outside the organization. Using structural equation modeling, I empirically test a number of hypothesized relationship based on a sample of 126 Internet Community users. The results are as follows: loyalty is significantly influenced by trust and relationship, repeat purchase is significantly influenced bye-loyalty. In addition, word of mouth is significantly influenced by e-loyalty.

• 정보처리학회논문지D
• /
• 제13D권1호
• /
• pp.117-124
• /
• 2006

UML(Unified Modeling Language)은 객체지향 모델링을 위한 언어이다 UML에 포함되어 있는 AD(Activity Diagram; 활동 다이어그램)는 워크플로우 시스템의 모델링에 적합하지만 수행 과정의 평가가 수학적이지 못하므로 수행 과정을 직관적으로 파악해야 하는 단점이 있다. 그러나 EMFG(Extended Mark Flow Graph)는 이산적인 시스템의 모델링에 적합할 뿐 아니라 수행 과정을 수학적으로 평가할 수 있다. 따라서 본 연구에서는 EMFG를 사용하여 모델링된 AD의 수행 동작을 평가하려고 한다. 우선 AD를 EMFG로 변환하는 방법에 대하여 제안하고, 변환된 EMFG의 수행을 평가함으로써 모델링된 AD의 수행완료 가능성을 평가한다. 그리고 컴퓨터 시뮬레이션을 통하여 이를 입증한다. 제안한 알고리듬은 대규모 워크플로우 시스템을 모델링한 AD의 수행완료 가능성도 쉽게 평가할 수 있는 장점이 있다.

• 한국보건간호학회지
• /
• 제29권3호
• /
• pp.488-502
• /
• 2015

Purpose: This study was conducted to determine the neighborhood environmental factors associated with physical activity among adults living in rural communities. Methods: A cross-sectional descriptive survey was conducted with a convenience sample of 201 adults living in three Ri in Y-city, Gyeonggi-do. Data were collected from face-to-face interview by trained interviewers and were analyzed using a zero-inflated negative binominal regression model. Results: Participants reported engaged in moderate or vigorous physical activity was 76.1%; 10.5% of participants reported that they met moderate physical activity recommendations and 14.5% of participants reported that they met vigorous physical activity recommendations. Zero-inflated negative binominal regression analysis showed association of increasing days of physical activity with social cohesion (${\beta}=.130$, p=.005), social network (${\beta}=-.096$, p=.003), and safety for crime (${\beta}=-.151$, p=.036), and no days of physical activity was associated with no attainment of education and marginally associated with increasing BMI. Conclusion: Neighborhood environmental factors including social cohesion, social network, and crime for safety were significantly associated with physical activity of rural adults. Community health nurses should expand an approach for individual behavior change to incorporate rural adults' specific neighborhood environmental factors into physical activity interventions.