• 한국멀티미디어학회논문지
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• 제6권4호
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• pp.676-684
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• 2003

eLearning can be defined as an approach to teaching and teaming that utilises Internet technologies to communicate and collaborate in an educational context. This includes technology that supplements traditional classroom training with web-based components and learning environments where the educational process is experienced online. The use of hypertext as an educational tool has a very rich history. The advent of the internet and one of its major application, the world wide web (WWW), has given a tremendous boost to the theory and practice of hypermedia systems for educational purposes. However, the web suffers from an inability to satisfy the heterogeneous needs of a large number of users. For example, web-based courses present the same static teaming material to students with widely differing knowledge of the subject. Adaptive hypermedia techniques can be used to improve the adaptability of eLearning. In this paper we report an approach to the design a unified implementation framework suitable for web-based eLearning that accommodates the three main dimensions of hypermedia adaptation: content, navigation, and presentation. The framework externalises the adaptation strategies using XML notation. The separation of the adaptation strategies from the source code of the eLearning software enables a system using the framework to quickly implement a variety of adaptation strategies. This work is a part of our more general ongoing work on the design of a framework for adaptive content delivery. parts of the framework discussed in this paper have been imulemented in a commercial eLearning engine.

• 한국임상약학회지
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• 제25권3호
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• pp.178-186
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• 2015

Objective: Clinical practice guidelines (CPGs) are systematically developed statements aimed at helping optimal care of the patient in a given clinical circumstance. Because of the increasing evidence that active implementation of CPGs improve health outcomes, there is a growing awareness of the importance of guideline development and dissemination. The objective of this study was to investigate the status of CPG development and availability of the CPGs in Korea. Method: We searched in the Web sites of 180 organizations to identify CPGs which were developed and/or published in Korea until 1 July 2014. The data of titles, published year, publisher, distributer, and accessibility at the internet web of all CPGs were collected and analyzed. Results: A total of 172 CPGs were developed and 80% had been released since 2009. Most (51.2%) were developed for management of 4 diseases: 28 for digestive system disease; 27 for infectious disease; 18 for endocrine and metabolic diseases; and 15 for neoplasms. Of the 172 CPGs, 150 CPGs were publicly available. Among the 150 CPGs, 78.7% (118/150) were developed by only one organization. Conclusion: To ensure the production of high-quality CPGs, it is necessary to collaborate with other relevant professional societies in guideline development process. In addition, stronger efforts on wider dissemination of CPGs must be employed at the country levels to promote implementation of CPGs in clinical settings.

• International Journal of CAD/CAM
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• 제3권1_2호
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• pp.51-60
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• 2003

The growth of the World Wide Web and the advances in high-speed network access have greatly changed existing CAD/CAE environment. The WWW has enabled us to share various distributed product data and to collaborate in the design process. An international standard for the product model data, STEP, and a standard for the distributed object technology, CORBA, are very important technological components for the interoperability in the advanced design and manufacturing environment. These two technologies provide background for the sharing of product data and the integration of applications on the network. This paper describes a distributed CAD/CAE environment that is integrated on the network by CORBA and product model data standard STEP. Several prototype application modules were implemented to verify the proposed concept and the test result is discussed. Finite element analysis server are further distributed into several frontal servers for the implementation of distributed parallel solution of finite element system equations. Distributed computation of analysis server is also implemented by using CORBA for the generalization of the proposed method.

• 한국임상약학회지
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• 제26권1호
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• pp.13-23
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• 2016

Background: South Korea is rapidly being an aging-society and the demand of long-term care insurance services for elderly patients is rising. In addition, because the elderly taking multiple medicines, the adherence is lowered and the adverse events are easily occurred. Therefore, many are interested in introducing the geriatric pharmacy specialist to manage this situation. Purpose: By applying a similar program such as the geriatric pharmacy specialist working in nursing home, we conducted this study to evaluate the potential contribution to both the health insurance services and financial savings for the elderly patients. Methods: We conducted a trial in an elderly nursing home to collaborate between doctor and pharmacist making a checklist for improving medication adherence and establish a consultation system. Also we applied a smart phone application in the pharmaceutical care processes. Results: Thereby completing the drug therapy related checklist apply to nursing facilities in South Korea. And we got a performance that improves medication adherence when used in the clinical practice settings. Conclusion: By introducing a training program of pharmacy care managers and geriatric professionals such as the United States and Japan, we revealed the elderly nursing home residents and vulnerable elderly people living alone were improved the medication adherence and it will contributed to the health and quality of life of the patients.

• 대기
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• 제23권3호
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• pp.357-365
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• 2013

A public-academia cooperative research system is suggested to improve the level of national research on atmospheric science and to enable the National Institute of Meteorological Research (NIMR) to meet its overloaded demand for research and results. As a practical example of cooperative research the CIRES case was reviewed. CIRES, the Cooperative Institute for Research in Environmental Sciences, located at the University of Colorado Boulder, is one of NOAA's 18 cooperative research centers located at universities across the U.S. NOAA, the National Oceanic and Atmospheric Administration, as a part of government, gives clear guideline for research topics and supplies research funds to research centers and audits their research processes and accomplishments. NOAA Boulder Laboratories, as a large, well-established government research center managed by government scientists, supplies depth of experiences and major research infra-structure to CIRES. CIRES pursues innovative and challenging research with their younger and brand-new researchers who are university employees. This cooperative work between government research organizations and the university produces high level research efficiently. Not only does Boulder have a beautiful natural setting where researchers live and work but also the city is a home to many scientific agencies and research facilities. This robust scientific network provides rich opportunities for CIRES researchers to collaborate with others in their scientific fields.

• Journal of Communications and Networks
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• 제9권1호
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• pp.56-66
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• 2007

Mobile ad-hoc networks (MANETs) have attracted great research interest in recent years. Among many issues, lack of motivation for participating nodes to collaborate forms a major obstacle to the adoption of MANETs. Many contemporary collaboration enforcement techniques employ reputation mechanisms for nodes to avoid and penalize malicious participants. Reputation information is propagated among participants and updated based on complicated trust relationships to thwart false accusation of benign nodes. The aforementioned strategy suffers from low scalability and is likely to be exploited by adversaries. In this paper, we propose a novel approach to address these problems. With the proposed technique, no reputation information is propagated in the network and malicious nodes cannot cause false penalty to benign hosts. Nodes classify their one-hop neighbors through direct observation and misbehaving nodes are penalized within their localities. Data packets are dynamically rerouted to circumvent selfish nodes. As a result, overall network performance is greatly enhanced. This approach significantly simplifies the collaboration enforcement process, incurs low overhead, and is robust against various malicious behaviors. Simulation results based on different system configurations indicate that the proposed technique can significantly improve network performance with very low communication cost.

• 터널과지하공간
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• 제27권6호
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• pp.377-386
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• 2017

본 연구는 1990년대부터 국내에서 처음으로 시작된 폐광산 지역 지반침하방지기술을 정리하고 향후 지반침하방지기술의 발전방향을 모색해보고자 하였다. 먼저 지반침하의 개념을 정리하고, 지반침하 조사기술, 안정성 평가기술, 보강기술, 계측기술 등 각각의 적용기술을 설명하였다. 현재의 어려운 사업상황을 극복하고 지반침하방지 기술을 발전시켜 나가기 위하여서는 먼저 현재까지 개발된 기술을 통합정리 하고, 공공기관과 민간전문 사업자가 상호 긴밀히 협력하여야 한다. 그동안 다양한 시행착오를 거쳐 발전된 기술을 터널굴착, 토목기반시설물 건설, 지하 환경영향 평가 등과 같은 관련 산업분야에 적용하여 사업영역을 확장해 나가는 것이 필요하다. 또한 좁은 국내시장을 벗어나 그동안 축적된 기술로 해외시장을 개척하여 나아가야 할 것이다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제4권6호
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• pp.1169-1193
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• 2010

In this paper, we present and compare two different multiple camera collaboration strategies to reduce false association in finding the correspondence of objects. Collaboration matrices are defined with the required minimum separation for an effective collaboration because homographic lines for objects association are ineffective with the insufficient separation. The first strategy uses the collaboration matrices to select the best pair out of many cameras having the maximum separation to efficiently collaborate on the object association. The association information in selected cameras is propagated to unselected cameras by the global information constructed from the associated targets. While the first strategy requires the long operation time to achieve the high association rate due to the limited view by the best pair, it reduces the computational cost using homographic lines. The second strategy initiates the collaboration process of objects association for all the pairing cases of cameras regardless of the separation. In each collaboration process, only crossed targets by a transformed homographic line from the other collaborating camera generate homographic lines. While the repetitive association processes improve the association performance, the transformation processes of homographic lines increase exponentially. The proposed methods are evaluated with real video sequences and compared in terms of the computational cost and the association performance. The simulation results demonstrate that the proposed methods effectively reduce the false association rate as compared with basic pair-wise collaboration.

• Journal of Electrical Engineering and Technology
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• 제13권2호
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• pp.781-789
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• 2018

This paper proposes a new approach utilizing empirical mode decomposition (EMD) reconstruction to process vibration signals of a transformer under DC bias caused by high voltage direction transmission (HVDC), which is the potential cause of additional vibration and noise from transformer. Firstly, the Calculation Method is presented and a 3D model of transformer is simulated to analyze transformer deformation characteristic and the result indicate the main vibration is produced along axial direction of three core limbs. Vibration test system has been built and test points on the core and shell of transformer have been measured. Then, the signal reconstruction method for transformer vibration based on EMD is proposed. Through the EMD decomposition, the corrupted noise can be selectively reconstructed by the certain frequency IMFs and better vibration signals of transformer have been obtained. After EMD reconstruction, the vibrations are compared between transformer in normal work and with DC bias. When DC bias occurs, odd harmonics, vibration of core and shell, behave as a nonlinear increase and the even harmonics keep unchanged with DC current. Experiment results are provided to collaborate our theoretical analysis and to illustrate the effectiveness of the proposed EMD method.

• 제어로봇시스템학회논문지
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• 제18권8호
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• pp.780-786
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• 2012

Surveillance has become one of promising application areas of wireless sensor networks which allow for pervasive monitoring of concerned environmental phenomena by facilitating context awareness through sensor fusion. Existing systems that depend on a postmortem context analysis of sensor data on a centralized server expose several shortcomings, including a single point of failure, wasteful energy consumption due to unnecessary data transfer as well as deficiency of scalability. As an opposite direction, this paper proposes an energy-efficient distributed context-aware surveillance in which sensor nodes in the wireless sensor network collaborate with neighbors in a distributed manner to analyze and aware surrounding context. We design and implement multi-modal sensor stations for use as sensor nodes in our wireless sensor network implementing our distributed context awareness. This paper presents an initial experimental performance result of our proposed system. Results show that multi-modal sensor performance of our sensor station, a key enabling factor for distributed context awareness, is comparable to each independent sensor setting. They also show that its initial performance of context-awareness is satisfactory for a set of introductory surveillance scenarios in the current interim stage of our ongoing research.