• 기록학연구
• /
• 제5호
• /
• pp.149-177
• /
• 2002

Metadata is a structured data that makes computer to understand web based data. Types of metadata are Dublin core, ONIX, and EBKS metadata in Korea. Dublin Core is well known among these metadata. Archive is a data, that is the result of ones or groups working process, which is reasonably maintained and stored. These archives are stored and maintained lawfully and suitably for efficient usages for the future. For efficiently managing these grant amount of archive, Finding Aids and Description are needed. Adoption Archives and Records Management system is inevitable in order to maintain organized and efficient data. Metadata helps governments data that is grant to organize in simple way. For maintaining and storing data efficiently, using metadata for Archives and Records Management is essential. Form this report, we will see the examples of using metadata of other country, such as GILS(Government Information Locator Service), AGLS(The Australian Government Locator Service), NZGLS(New Zealand Government Locator Service), Danish Dublin Core and e-GMS(e-Government Metadata Standard) and e-GMF(e-Government Metadata Framework).

• The Journal of Advanced Prosthodontics
• /
• 제9권3호
• /
• pp.143-151
• /
• 2017

PURPOSE. The design of the attachment must provide an optimum stress distribution around the implant. In this study, for implant overdentures with a bar/clip attachment or a locator attachment, the stress transmitted to the implant in accordance with the change in the denture base length and the vertical pressure was measured and analyzed. MATERIALS AND METHODS. Test model was created with epoxy resin. The strain gauges made a tight contact with implant surfaces. A universal testing machine was used to exert a vertical pressure on the mandibular implant overdenture and the strain rate of the implants was measured. RESULTS. Means and standard deviations of the maximum micro-deformation rates were determined. 1) Locator attachment: The implants on the working side generally showed higher strain than those on the non-working side. Tensile force was observed on the mesial surface of the implant on the working side, and the compressive force was applied to the buccal surface and on the surfaces of the implant on the non-working side. 2) Bar/clip attachment: The implants on the both non-working and working sides showed high strain; all surfaces except the mesial surface of the implant on the non-working side showed a compressive force. CONCLUSION. To minimize the strain on implants in mandibular implant overdentures, the attachment of the implant should be carefully selected and the denture base should be extended as much as possible.

• 한국통신학회논문지
• /
• 제37B권11호
• /
• pp.984-992
• /
• 2012

본 논문에서는 모바일 중심의 미래 인터넷을 위한 Mobile-Oriented Future Internet (MOFI) 구조를 소개하고, 호스트 Identifier(ID)와 Locator(LOC)의 분리를 토대로 설계된 MOFI 구조에서 ID와 LOC의 분산형 매핑 제어 기법을 제안한다. 제안하는 Dynamic and Distributed Mapping System (DDMS) 기법에서는 ID와 LOC의 매핑 기능을 각 도메인의 Access Router(AR)에 분산시킴으로서 기존의 Proxy Mobile IP (PMIP) 프로토콜의 중앙집중형 방식의 문제점을 개선하였다. 성능 분석을 위해 리눅스 플랫폼에서 MOFI 구조와 제안하는 매핑 제어 기능을 구현하였고, 테스트베드 실험을 통해 기존 PMIP에 비해 제안 기법이 데이터 전송 측면에서 더 효율적임을 확인하였다.

• 한국정보과학회논문지:정보통신
• /
• 제41권4호
• /
• pp.167-176
• /
• 2014

본 논문은 이동 환경 위주의 미래 인터넷 환경을 위해 제안된 Mobile Oriented Future Internet (MOFI) 구조에 대하여 OpenFlow 기반 구현 이슈와 KOREN 실험망을 이용한 성능 분석을 논의한다. MOFI 구조는 호스트 식별자(host identifier)와 지역 위치자(local locator) 사용, 데이터 전달을 위한 Query 우선의 데이터 전달(Query-First Data Delivery), 식별자와 위치자간 분산형 매핑 시스템(Distributed Mapping System)을 특징으로 한다. 기존 MOFI 연구에서는 intra-domain 이동성 지원을 위해 6-to-4 터널링 기법 및 리눅스 플랫폼을 활용한 구현 방식을 제안하고 실험실 테스트베드에서 성능분석을 수행하였다. 한편, 본 논문에서는 inter-domain 이동성 지원을 위한 세부 절차를 논의하고 Click Modular Router와 OpenFlow 플랫폼을 활용한 MOFI 구현 방식을 제안한다. 나아가, 실제 KOREN 실험망을 활용한 성능 실험을 통해 MOFI 구조와 기존 이동성 제어 방식인 Proxy Mobile IP (PMIP) 기법을 비교한다. 실험 결과, 이동성 제어를 위한 시그널링 지연 시간 및 처리되는 메시지 수 측면에서 MOFI 구조가 기존 PMIP 이동성 제어 기법에 비하여 더 좋은 성능을 보이고 있음을 확인하였다.

• 상하수도학회지
• /
• 제30권3호
• /
• pp.253-261
• /
• 2016

A variety of methods for detecting the location of an underground water pipeline are being used across the world; the current main methods used in South Korea, however, have the problems of low precision and efficiency and the limitations in actual application. On this, this study developed locator capable of detecting the location of a water pipe by the use of an IMU sensor, and technology for using the extended karman filter to correct error in location detection and to plot the location on the coordinate system. This study carried out a tract test and a road test as basic experiments to measure the performance of the developed technology and equipment. As a result of the straight line, circular and ellipse track tests, the 1750 IMU sensor showed the average error of 0.08-0.11%; and thus it was found that the developed locator can detect a location precisely. As a result of the 859.6-m road test, it was found that the error was 0.31 m in case the moving rate of the sensor was 0.3-0.6 m/s; and thus it was judged that the equipment developed by this study can be applied to long-distance water pipes of over 1 km sufficiently. It is planned to evaluate its field applicability in the future through an actual pipe network pilot test, and it is expected that locator capable of detecting the location of a water pipe more precisely will be developed through research for the enhancement of accuracy in the algorithm of location detection.

• 구강회복응용과학지
• /
• 제30권2호
• /
• pp.176-183
• /
• 2014

심하게 흡수된 치조제는 기능적인 하중을 견디기 어렵고 구강 조직의 유해 변화와 더불어 환자의 의치 적응을 어렵게 한다. 환자의 불편감을 해소하고 의치의 안정성과 유지력을 증가시키기 위해 임플란트를 이용한 피개의치가 치료 방법으로 선택될 수 있다. 로케이터 부착장치는 사용상의 편리성이 높으며 다양한 유지력을 갖는 남자부를 보유함으로써 임상에서 볼 형태 부착장치대용으로 많이 사용되고 있다. 본 증례는 77세 여자환자로서 낮은 수직고경과 심한 치조제 흡수를 보이는 상하악 무치악 상태였다. 이에 하악에 4개의 임플란트를 식립하고, 상악은 총의치, 하악은 로케이터 부착장치를 이용한 임플란트 피개의치로 수복하여 기능 및 심미적으로 만족할 만한 결과를 얻었기에 이를 보고하고자 한다.

• Restorative Dentistry and Endodontics
• /
• 제23권1호
• /
• pp.339-345
• /
• 1998

The purpose of this study was to evaluate the in vitro accuracy of Root ZX(Morita Co., Japan) which is the ratio type electronic apex locator. The 86 extracted human palatal roots of maxillary molar with fully formed apices were used. File lengths with the file tip just visible at the foramen were compared to those measured with Root ZX. For length measuring with Root ZX, saline test model with which the apical 1/3 of each root was submerged into normal saline were designed. The root canal lengths were determined with Root ZX and the radiographs were taken with a file in the canal. The distances from file tips of Root ZX lengths to apecies in radiographs also were measured with Profile projector PJ311(Mitutoyo Co., Japan). The results were as follows : 1. The root canal length determined with electronic apex locator was $0.78{\pm}0.53mm$ shorter than the length with visual measurement. 2. The file tip of Root ZX lengths was located at $0.85{\pm}0.49mm$ away from the apex in radiograph. 3. The accuracy of the Root ZX was 79.1% within 0.5mm of visual working length and 96.5% within 1.0mm.

• Journal of Computing Science and Engineering
• /
• 제11권2호
• /
• pp.49-57
• /
• 2017

This paper proposes a new IPv6 networking paradigm as a counter answer to the rationale for locator/identifier separation. Instead of involving separate number spaces each for node identifiers and locators, the context of the IP address as a node identifier alone is utilized and no additional locators are incorporated. That is, there are only node addresses and no locators, and location information is indirectly derived from neighbor relations between nodes. In order to accomplish this, no subnet IDs are utilized; the ID value is set to zero for all subnets. The paper details how to construct this paradigm through novel choice of operational policies in various IPv6 protocols and some trivial modifications. Especially, inherent provision of intra-domain node- as well as subnet-mobility by use of standard link-state intra-domain routing protocols is discussed. A number of important advantages of this paradigm over the canonical IPv6 networking and various known solutions of locator/identifier separation are discussed. Tailoring for multi-area domains and IPv4 is left for further study.

• 대한의용생체공학회:학술대회논문집
• /
• 대한의용생체공학회 1997년도 추계학술대회
• /
• pp.399-402
• /
• 1997

It is important to find a accurate root canal length or successful endodontic therapy. By X-ray method takes a long time and difficult in a curved canal. After developed electronic apex locator has allowed to measure the root canal length with easy, in a short time also in a curved canal. But most electronic apex locators have the disadvantage which is too short reading or sometimes the measurement itself becomes impossible if there are electrolytes in the canal. To overcome this drawback, impedance ratio method has been developed. In this study, we have developed frequency dependent electronic apex locator to minimize the interference of electrolytes. And based on that also some error in clinic use, we added the other method. Difference of two signals which are used in calculation of impedance ratio was can be represent the status of root canal fluid. As a result, using impedance ratio method and auto-calibration by voltage difference method can reduce the measurement error.

• Journal of Astronomy and Space Sciences
• /
• 제32권1호
• /
• pp.91-99
• /
• 2015

The Korean Solar Radio Burst Locator (KSRBL) is a solar radio spectrograph observing the broad frequency range from 0.245 to 18 GHz with the capability of locating wideband gyrosynchrotron bursts. Due to the characteristics of a spiral feed, the beam center varies in a spiral pattern with frequency, making a modulation pattern over the wideband spectrum. After a calibration process, we obtained dynamic spectra consistent with the Nobeyama Radio Polarimeter (NoRP). We compared and analyzed the locations of bursts observed by KSRBL with results from the Nobeyama Radioheliograph (NoRH) and Atmospheric Imaging Assembly (AIA). As a result, we found that the KSRBL provides the ability to locate flaring sources on the Sun within around 2'.