• 지적과 국토정보
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• 제44권1호
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• pp.179-194
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• 2014

본 연구에서는 "글로벌 공간정보관리" 전략에 대응하는 새로운 패러다임으로서 "측량 공간정보관리"를 위한 통합시스템을 연구하고 새로운 국가공간정보기반(NSDI)을 제시하는 데 목적이 있다. 이 논문에서는 우리나라의 기존 NGIS사업 및 공간정보정책을 검토하고 공공데이터 개방, 전자정부, 지구관측 등 국내외 흐름을 반영하여 대축척지도를 기반으로 하는 Bottom-up 방식으로서 NSDI의 정보영역을 수정하여 새롭게 정의하고[그림 1], 수치지도 등을 기본공간데이터와 동등한 개념으로 하여 공공-민간데이터의 공유데이터를 추가할 수 있게 하는 새로운 개념의 NSDI 모델을 제시하였다[그림 2]. 또한, 현재의 독립적인 국토교통정보화의 운영체계는 다른 부처의 응용분야(산림, 환경, 농업, 문화재 등)뿐만 아니라 국토교통부 내부인 다른 부문과의 협력체계를 강화하고 지방 중심으로 개선이 필요하다. 이에 새로운 개념의 NSDI를 국토교통부에 적용한 기관모델을 제안하고 있다[그림 3]. 새로운 국토교통부 SDI 기관모델에서는 공간정보 부문을 모든 활용 부문의 공통 기반으로 하고 데이터를 재편성하는 모델이며, 공통기반데이터를 통하여 소속기관 및 지방정부 데이터를 수직적 또는 수평적으로 연계하여 정부3.0이 가능하게 된다. 이러한 통합시스템은 국토지리정보원 기본도 데이터, 지방정부 KLIS 데이터, 지방정부 공공시설물 데이터를 모두 기본공간데이터 개념에 포함하게 되면, 현재 법령 또는 관리기관에 따라 독자적으로 운영되고 있는 모든 도면과 공부를 공통 기반(수치지도)과 통합, 연계하여 현행화할 수 있는 전략모델이다.

• 한국정보처리학회논문지
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• 제6권4호
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• pp.851-867
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• 1999

Numerous proposals for extending the relational data model as well as conceptual and object-oriented data models have been suggested. However, there has been relatively less research in the area of defining segmented storage structure and data migration strategies for temporal data. This paper presents the segmented storage structure in order to increment search performance and the two data migration strategies for segmented storage structure. this paper presents the two data migration strategies : the migration strategy by Time granularity, the migration strategy by LST-GET. In the migration strategy by Time Granularity, the dividing time point to assign the entity versions to the past segment, the current segment, and future segment is defined and the searching and moving process for data validity at a granularity level are described. In the migration strategy by LST-GET, we describe the process how to compute the value of dividing criterion. searching and moving processes are described for migration on the future segment and the current segment and entity versions 새 assign on each segment are defined. We simulate the search performance of the segmented storage structure in order to compare it with conventional storage structure in relational database system. And extensive simulation studies are performed in order to compare the search performance of the migration strategies with the segmented storage structure.

• 대한토목학회논문집
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• 제5권4호
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• pp.57-64
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• 1985

유출 특성이 정상이라는 가정하에 침투능식의 매개 변수들을 추정하기 위해 다음의 절차를 고안하였다 : (1) 최적화기법에 의하여 유출모형의 제 매개변수를 추정한다. (2) 추정된 매개 변수들이 정상이라는 가정하의 기간 동안에 발생한 호우들에 대해 적합성을 보이도록 유효우량을 제어한다. (3) (1)~(2)의 절차를 반복하여 모든 매개 변수들이 평형상태에이르면 최적 제어된 손실우량을 수식으로 표현하기 위하여 비선형 fitting 을 적용한다. 이때 손실우량은 강우심도를 반영하도록 한다. 횡성 유역의 연속된 3개의 호우에 대해 위 기법을 적용한 결과, 선정된 얼개와 고안된 절차는 관측치에 충분한 적합성을 보였고 과거 연구와도 비교하였다.

• 한국정보시스템학회:학술대회논문집
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• 한국정보시스템학회 2001년도 추계학술대회 발표논문집:차세대 전상거래 시대의 비즈니스전략
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• pp.438-450
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• 2001

This study is to classify the typology of e-business model based on the practical strategic model for successful e-business implementation. For that purpose, we review the conceptual framework of e-business and collected the data from 127 companies implementing e-business. The study is conducted in three phases as follows. First, six factors consisted of 22 items are derived through factor analysis. Second, Cluster analysis is employed to group the firms into different strategic patterns. A five-cluster solution is found to maximize the distances between cluster means across the six factor patterns. The models are named as 'ascendancy and convergence', 'expansion and moderate price', 'expansion and improvement of quality', 'ascendancy and process', and 'improvement of quality' respectively. Third, ANOVA is used to examine the impact on the performance differences attributable to the models. The results of the study are; (1) the 'ascendancy and process', 'expansion and improvement of quality' and 'expansion and moderate price' models were associated with significantly higher performance levels than the 'improvement of quality' model, and (2) the hybrid strategies are needed to implement e-business successfully based on the 'ascendancy and process' model.

• 무역상무연구
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• 제53권
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• pp.233-264
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• 2012

This study proposes and verifies an integrated model that reflects and helps to explain complexities and comprehensiveness of e-Trade in practice. The primary objective was to widen and deepen our understanding about the phenomena of paperless trading which will enable us to formulate an effective means to promote the adoption and utilization of e-Trade infrastructure. This investigation combined and extended the theories and models of TAM, TOE framework, and TTF in order to identify and hypothesize the causal relationships between factors of technology, organization and environment, and the usage level and performance of e-Trade. The previous research on e-Trade was reviewed and incorporated into the extended model. The integrated model was tested based on the survey data collected from a sample of 417 trading firms. Overall, the regression and path analysis demonstrated the usefulness of the proposed model as a conceptual framework for better understanding and explanation of e-Trade. The result of the analysis implies the relevancy of the factors of technology, organization and environment for facilitating usage of and increasing performance of e-Trade. However, rejection of a few hypothesized relationships implies the necessity of extensive promotion and education about the related laws and regulations, and education, supervision and incentives for e-Trade practitioners.

• 한국농공학회논문집
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• 제56권6호
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• pp.45-53
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• 2014

This study presents a system dynamics modeling approach to simulate daily streamflow in a watershed including wastewater treatment plant which contributes to irrigation water supply. The conceptual system dynamics model considering the complex and dynamic hydrological processes in the watershed was developed. The model was calibrated and validated each for two years based on observed flow data. Model performances in terms of $E_{NS}$, RSR, PBIAS, and $R^2$ were 0.64, 0.60, -3.6 %, and 0.64 for calibration period, and 0.66, 0.58, -2.6 %, and 0.66 for validation period, respectively, showing an applicability on generating the daily streamflow. System dynamics modeling approach could help better understand the hydrological behavior of the watershed being reused wastewater for agriculture, by providing graphical dynamics of the hydrological processes as well as conventional rainfall-runoff model results.

• 지적과 국토정보
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• 제45권1호
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• pp.193-205
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• 2015

입체공간에 대한 이용이 증가하면서 기존의 2차원 지적으로는 입체공간에 대한 정보를 관리하는데 한계가 있어 입체공간의 물리적 현황 및 사용권에 대한 정보를 등록 관리할 수 있는 3D 지적이 요구되고 있다. 이번 연구는 입체공간의 이용 현황 분석을 통해 3D 지적에 포함될 수 있는 데이터의 범위를 설정하고, 국제표준인 토지행정도메인모델(LADM)을 기반으로 3D 지적을 이해할 수 있는 개념모델을 설계함으로써 3D 지적시스템의 개발을 위한 기반을 마련하고자 한다.

• Journal of Information Technology Applications and Management
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• 제20권2호
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• pp.69-87
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• 2013

The expanded spiral model in this paper consists of five processes of architecture design, architectural construction, architectural maintenance, operation, and architectural management. The former four processes are executed alternatively, while the latter architectural management process is executed continuously interacting with the other processes during the whole life cycle of the system. The expanded spiral model provides a conceptual framework to sort discussions of architectural degeneration into those of product-oriented processes and those of management processes, making it possible to incorporate the models and body of knowledge about project and program management especially those of Project Management Institute, into discussions of architectural degeneration. A good architecture decomposes the software-intensive system into components mutually interacting in a well-formed structure. The architecture design process and the architectural construction process together create the object system with well-designed architecture. The architectural maintenance process prevents the implemented architecture deviate from the designed architecture. The architectural management process monitors the changes of requirements including architecturally significant requirements, supports the other processes to be executed reflecting various perspectives of stake-holders, and creates and documents the reasons of architectural decisions, which is considered as a key element of the architecture.

• 한국병원경영학회지
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• 제25권1호
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• pp.32-45
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• 2020

Purpose: The purpose of this research is to develop two medical tourism system models which explain medical tourism phenomenon with a systemic approach. Methodology/Approach: This research was conducted using a qualitative data analysis which mainly refer previous references in relation to medical tourism in the areas of tourism and medicine. Leiper's tourism system model was utilized as a conceptual framework. In-depth interviews with experts in the area were attempted in order to pretest the models. Findings: This research suggests a medical tourism system framework and a medical service provision framework. The first model presents medical tourism components and their relationships within a framework presented in a diagram. The second model shows the relationships among medical services required by medical tourists, the service providers, and service human resources along with movements of medical tourists. Practical Implications: The first model presents a spatial composition of medical tourism components and their relationships, whereas the second model shows the linkage among medical services, the service providers, and relevant service human resources along with time sequential steps of medical tourists. These two models are complementary and may be used as useful tools to observe medical tourism phenomenon with a systemic and holistic approach. These two models may enable stake holders avoid unnecessary confusions and conflicts that result in duplication of government policies and a waste of budget and human resources.

• Journal of Korea Trade
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• 제25권2호
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• pp.1-21
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• 2021

Purpose - The purpose of this research is to develop two medical tourism system models which explain medical tourism phenomenon with a systemic approach. Design/methodology - This research was conducted by using a qualitative data analysis which mainly refers to previous references of medical tourism in the areas of tourism and medicine. Leiper's tourism system model was utilized as a conceptual framework. In-depth interviews with experts in the field were conducted in order to pretest the models. Findings - This research suggests a medical tourism system framework and a medical service provision framework. The first model presents medical tourism components and their relationships within a framework presented in a diagram. The second model shows the relationships among medical services required by medical tourists, the service providers, and service human resources along with movements of medical tourists. Originality/value - The first model presents a spatial composition of medical tourism components and their relationships, whereas the second model shows the linkage among medical services, the service providers, and relevant service human resources along with time sequential steps of medical tourists. These two models are complementary and may be used as useful tools to observe medical tourism phenomenon with a systemic and holistic approach. These two models may enable stake holders avoid unnecessary confusions and conflicts that result in duplication of government policies and a waste of budget and human resources.