• KSCE Journal of Civil and Environmental Engineering Research
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• v.12 no.1
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• pp.151-158
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• 1992

Topographic mapping from economic SPOT stereo imagery than aerial photographs has become possible. Many of authors have studied the possibility of base map revisions and the accuracy of results. They have concluded that the SPOT image is suitable for 1/50,000 to 1/100,000 topographic map. For topographic map, orthophoto and DTM generation from SPOT imagery, accurate exterior orientation parameters are needed. But since the geometric characteristic of SPOT image is dynamic linear array imagery, the conventional bundle adjustment for photogrammetry can not be directly applied. Reliability is the ability to detect gross error, which is called the internal reliability, and the effect of non-detectable gross error on the results of exterior orientation, which is called the external reliability. This paper shows how the reliability of SPOT imagery depends on the different coordinate systems, presentations of coordinate for flight direction, orders of exterior orientation parameters and distribution of control points, and thus analyses the theoretical reliability of the exterior orientation, which can provide a basis for the planning of SPOT projects.

• Journal of Korean Biological Nursing Science
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• v.18 no.4
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• pp.257-263
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• 2016

Background: This study purposed to examine how the incidence of the central line-associated bloodstream infection (CLABSI) in a operating room (OR) is affected by bundle application on central line insertion (CLI) practice. Methods: The study design was a pretest-posttest experimental trial. The subjects were 83 patients before the bundle application on CLI and 70 patients after. Results: The compliance(%) of bundle on CLI of among those who observed all of the five items increased from 7.2% before the intervention to 72.9% after. By items, compliance with the maximal barrier precaution was 100% for the use of a mask and cap before and after the intervention, but increased from 73.5% before the intervention to 88.6% after for the hand hygiene, from 73.5% to 88.6% for the use of a sterile gown, and from 9.6% to 75.7% for the use of a sterile large drape covering the whole body. CLABSI did not happen on CLI either before or after the application of the bundle intervention. Conclusion: Bundle application increased compliance with the use of a sterile gown and the use of a sterile large drape. However, its effect in the prevention of CLABSI was not clear probably due to the short period of intervention in a single hospital.

• Korean Journal of Remote Sensing
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• v.32 no.6
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• pp.647-656
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• 2016

Growth of UAV technology leads to expansion of UAV image applications. Many UAV image-based applications use a method called incremental bundle adjustment. However, incremental bundle adjustment produces large computation overhead because it attempts feature matching from all image pairs. For efficient feature matching process we have to confine matching only for overlapping pairs using exterior orientation parameters. When exterior orientation parameters are not available, we cannot determine overlapping pairs. We need another methods for feature matching candidate constitution. In this paper we compare matching candidate constitution methods without exterior orientation parameters, including partial feature matching, Bag-of-keypoints, image intensity method. We use the overlapping pair determination method based on exterior orientation parameter as reference. Experiment results showed the partial feature matching method in the one with best efficiency.

• Journal of Korean Biological Nursing Science
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• v.20 no.4
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• pp.205-213
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• 2018

Purpose: The purpose of this study was to confirm the compliance of the application of a ventilator-associated pneumonia bundle and understand its effects on the decrease in the incidence of ventilator-associated pneumonia. Methods: This was a retrospective observational study with history control group design. Subjects were selected from January to June 2014, prior to the intervention using the ventilator-associated pneumonia bundle. Subjects were also selected from October 2014 to March 2015, 3 months after the intervention. The number of subjects was 112 before the intervention, and 107 after the intervention. Results: The number of nurses who followed the bundles increased from 8 out of 29 (27.6%) before the intervention to 19 out of 29 (65.5%) after the intervention (odd ratio= 4.99, confidence interval= 1.63-15.25, p= .004). There were 3 cases of ventilator-associated pneumonia before the intervention and 1 case after the intervention. The ventilator days were 2,143 days before the intervention and 2,232 days after the intervention. The ventilator-associated pneumonia rate of the 1,000 ventilator days was 1.40 before the intervention and decreased to 0.45 after the intervention. Conclusion: This study is meaningful, as there has been little research conducted regarding the application of the ventilator-associated pneumonia bundle in South Korea.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.586-588
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• 2004

가정 내의 가전기기들이 디지털화되고 있고, 이것들을 네트워크로 연결하여 원격지에서 제어하는 스마트 홈 관련 기술들이 현실화되고 있다. 이러한 환경에서의 컴퓨팅을 위해서는 응용 프로그램간의 호환성 뿐 아니라 데이터의 호환성, 그리고 이종의 프로토콜간의 연동이 필수적이다 따라서 이를 위한 소프트웨어가 바로 스마트 홈 미들웨어이다. OSGi(Open Service Gateway Initiative)(8)는 장비 연결 및 제어로 얻을 수 있는 유효한 서비스나 여러 미들웨어들 간의 통합을 위한 제반 환경 제공을 목표로 하는 비 표준화 단체로써 OSGi 프레임워크 환경에서 서비스들은 서비스 게이트웨이와 서비스 번들의 life-cycle을 따라 동적으로 전개된다. 본 저자들은 SMF(Service Management framework)(9)를 사용하여 OSGi를 기반으로 한 Smart Home Service Bundle에 관해서 연구하였다.

• Korean Management Science Review
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• v.21 no.3
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• pp.13-22
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• 2004

We discuss that the proliferation of new types of retailers such as Internet shopping malls. home shopping systems, which use telecommunication media as means of providing information of products. makes delivery service generally available. Then. we show that the delivery service can be used strategically for profit maximization by intentionally homogenizing consumers and. furthermore, social welfare generally increases by this delivery service unless the cost of delivery service is higher than that of all consumer groups.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 1998.10a
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• pp.167-174
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• 1998

Recently several researches of high speed container ship and loading system are mainly accomplished in U.S.A. and Japan. Its shipping service is not realized but it is realized in near future. To effective use of the feature and efficiency of them, quay, loading/unloading. yard operation system, port management system and connection transport system must be well integrated and operated. Specially, loading /unloading speed of container crane is important for making effective use of them. To speed up loading/unloading system, RO-RO and LO-LO methods that are mostly exclusive system are studied on the container crane with special structure and mechanism to handle individual container or bundle of containers. In this paper these methods are shown. When new high speed loading system of container is desighed, the realistic constrains must be considered.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.01a
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• pp.15-18
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• 2011

현재 컴퓨팅 환경은 분산, 이동, 유비쿼터스 컴퓨팅 환경으로 진화되고 있다. OSGi는 유비쿼터스 환경에서 디지털 이동 전화, 차량, 임베디드 가전, 가정용 게이트웨이, 데스크탑 컴퓨터, 고성능 서버에 이르기까지 그 적용범위가 확대되고 있다. 따라서 서로 다른 장비에 탑재된 OSGi 프레임워크의 서비스들을 서로 연동하여 원격 OSGi 서비스들을 공유하여 상호 운용할 수 있는 기술이 필요하게 되었다. 본 논문에서는 분산 OSGi 프레임워크에서 원격 서비스의 상호운용을 지원하기 위하여 분산 미들웨어 기술인 RMI 패러다임을 적용한 원격 OSGi 서비스 상호운영 방안을 제안한다. 제안하는 원격 OSGi 서비스 상호운용 방안은 OSGi 표준 기술을 활용 및 확장하여 OSGi 아키텍처에 부합하는 원격서비스의 등록 및 발견, 접근 방법을 제공한다. 또한 동적으로 프락시 번들 및 프락시 서비스를 생성함으로써 원격 OSGi 서비스의 위치 투명성을 지원하는 특징을 가진다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.824-828
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• 2003

On February 20, 2003, the FCC, the regulator in US, adopted its UNE triennial Review decision, the most sweeping ruling affecting the telecommunications industry since 1996. The FCC adopted a policy of preserving access to the legacy network, while deregulating new, "next generation" networks utilizing fiber facilities. Baby bell like Verizon, SBC strongly insisted that the FCC should relax the unbundling rules to be enlarged the network investment of telecommunication providers. However, this FCC′s determination looks like the partial acceptance of their assertions. This paper mainly will review the existing studies about the impact of UNEs on investment incentives and then find out some implications to be applied in Korea.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.73-76
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• 2008

OSGi(Open Service Gateway initiative) Alliance는 1999년에 썬 마이크로시스템즈, IBM, 에릭손 등에 의해 구성된 개방형 표준 단체로 지능형 분산 컴포넌트와 원격 관리 될 수 있는 자바 기반의 서비스 플랫폼을 제정 해왔다. OSGi의 핵심은 어플리케이션의 생명 주기를 OSGi 플랫폼 위에서 어플리케이션이나 번들 컴포넌트의 재부팅 없이 실시간으로 설치, 시작, 정지, 업데이트, 제거를 할 수 있도록 지원해 주며, OSGi는 또한 어플리케이션에 포함될 수 있는 형태의 SOA를 구현하고 있다. 본 연구에서는 OSGi가 현재 홈 네트워크에서 많이 사용되고 있는데 그 방향을 자동차 내부의 네트워크 환경에 중점을 두어 실제로 어떤 서비스가 가능한지 시뮬레이션이나 간단한 서비스를 제작하여 알아본다.