• 정보관리학회지
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• 제1권1호
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• pp.78-99
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• 1984

본 논문은 기계가독형 데이타베이스를 탐색하는 자연어 정보검색 시스템에서 검색용 디소오러스를 이용하면 정보검색효율이 향상된다는 전제하에, 검색용 디스오러스 자동 작성방법 중의 하나인 용어 다동분류를 우리말 용어에 적용시켜 실험하였고, 이 결과로 형성된 용어군의 응용방법을 제시하였다. 용어자동분류는 용어사이에 존재하는 어의적 관계가 한 문장에서 출현하는 용어의 통계적 양상에 근거하여 밝혀질 수 있다는 가설하에 세워진 방법으로, 본 논문에서는 심리학 분야의 국내 학술잡지중 초록이 수록된 4개의 잡지를 실험대상잡지로 선택하였다.

• 한국생산제조학회지
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• 제9권6호
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• pp.19-33
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• 2000

In this paper, we propose anew approach to the development of the automatic vision system to examine and repair the steam generator tubes at remote distance. In nuclear power plants, workers are reluctant of works in steam generator because of the high radiation environment and limited working space. It is strongly recommended that the examination and maintenance works be done by an automatic system for the protection of the operator from the radiation exposure. Digital signal processors are used in implementing real time recognition and examination of steam generator tubes in the proposed vision system. Performance of proposed digital vision system is illustrated by simulation and experiment for similar steam generator model.

• 대한음성학회지:말소리
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• 제61호
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• pp.49-62
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• 2007

This study focused on the improvement of prosody transplantation technology to be used for effective prosody education. Issues making the technology a less acceptable tool for prosody education were addressed. Instead of merely copying the target pitch onto a learner's utterances, the target pitch was resealed in semitone before the transplantation. In so doing, distortion of a signal was minimized and the transplanted utterance could have the quality of sound not different from the learner's utterances. Instead of manual transplantation, an automatic procedure was proposed to increase the reliability and the consistency of the outcome and enable real time processing. The perceptual performance of the automatic transplantation was evaluated by the perception experiment showing the automatic ransplantation was as good as the manual process.

• Journal of Biosystems Engineering
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• 제23권1호
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• pp.83-90
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• 1998

In this paper the automatic system for dairy cattle has been desisted such as body temperature measuring unit, feed supplying unit and temperature control unit. Since e disease is strongly related to the body temperature of cattle, early detection of the abnormal temperature would prevent the severe problems which nay occur in dairy farms. An electronic component AD590J is used as temperature sensor for the system, The device is highly robust against the noise since the output signal is the current so it can be applied to a long distance sensing The resolution of signal is 0.1$^{\circ}C$ and the current is 10㎷ Also 12-bit A/D converter is desisted fir interfacing the sensor with a one-chip microprocessor. A temperature measuring experiment using the developed system has been done for measuring the temperature of human beings and the system was proven to be useful for measuring the body temperature of dairy cattle properly. A geared AC motor is used for the feed supplying unit The heater and fm are used as temperature control unit. The feed supplying unit and temperature control unit are well operating in the laboratory experiment.

• 한국항해항만학회지
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• 제30권3호
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• pp.197-201
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• 2006

AIS(Automatic Identification System)는 선박의 항해안전 및 실시간 모니터링을 위하여 국제해사기구(IMO)에서 채택한 것으로서 선박의 제원 및 운항정보를 선박-선박/육상 간에 자동 송수신 하는 장치이다. 연안해역의 관제, 수색 및 구조지원, 선박통항관제 수단을 제공하여 주는 유용한 장비이다. 본 연구에서는 AIS 장비를 항로표지에 설치하여 항로표지에 대한 실시간 정보를 수집하거나 감시 및 제어 또한 이를 직접 선박에 제공하기 위한 실시간 유비쿼터스 해상표지시설의 구축을 위하여 실시한 해상실험을 결과를 분석하여 구축을 위한 방안을 제안 하고자 한다.

• 한국정밀공학회지
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• 제33권11호
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• pp.899-904
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• 2016

ELID grinding is an excellent technique for the mirror grinding of the variety of the advanced metallic or nonmetallic materials. The focus of this study is the development of an automatic-control electrolysis-speed device for the automation of the ELID-grinding process. For the development of the automatic-control electrolysis-speed device, analysis experiments regarding the ELID cycle and oxide-layer removal and creation were conducted according to a truing and dressing process. Also, a comparative experiment was conducted to confirm the variance of the electrolysis speed in accordance with changes of the voltage. The experiment results for the developed automatic-control electrolysis-speed device show that the developed device could control the electrolysis speed according to voltage changes through the use of the data that are monitored during the ELID-grinding process.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2005년도 추계학술대회 논문집
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• pp.169-174
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• 2005

AIS(Automatic Identification System)는 선박의 항해안전 및 실시간 모니터링을 위하여 국제해사기구(IMO)에서 채택한 것으로서 선박의 제원 및 운항정보를 선박-선박/육상 간에 자동 송수신 하는 장치이다. 연안해역의 관제, 수색 및 구조지원, 선박통항관제 수단을 제공하여 주는 유용한 장비이다. 본 연구에서는 AIS 장비를 항로표지에 설치하여 항로표지에 대한 실시간 정보를 수집하거나 감시 및 제어 또한 이를 직접 선박에 제공하기 위한 실시간 유비쿼터스 재상표지시설의 구축을 위하여 실시한 해상실험을 결과를 분석하여 구축을 위한방안을 제안 하고자 한다.

• 대한원격탐사학회지
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• 제19권5호
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• pp.393-402
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• 2003

In times of the civil uses of commercialized high-resolution satellite imagery, applications of remote sensing have been widely extended to the new fields or the problem solving beyond traditional application domains. Transportation application of this sensor data, related to the automatic or semiautomatic road extraction, is regarded as one of the important issues in uses of remote sensing imagery. Related to these trends, this study focuses on automatic road extraction using Gradient Direction Profile Algorithm (GDPA) scheme, with IKONOS panchromatic imagery having 1 meter resolution. For this, the GDPA scheme and its main modules were reviewed with processing steps and implemented as a prototype software. Using the extracted bi-level image and ground truth coming from actual GIS layer, overall accuracy evaluation and ranking error-assessment were performed. As the processed results, road information can be automatically extracted; by the way, it is pointed out that some user-defined variables should be carefully determined in using high-resolution satellite imagery in the dense or low contrast areas. While, the GDPA method needs additional processing, because direct results using this method do not produce high overall accuracy or ranking value. The main advantage of the GDPA scheme on road features extraction can be noted as its performance and further applicability. This experiment study can be extended into practical application fields related to remote sensing.

• 한국도서관정보학회지
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• 제18권
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• pp.139-192
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• 1991

Though the computer has become deeply entrenched as the major tool in information processing(library works), it may be obvious that automatic book classification techniques ate still under experimentation, and the techniques have not yet been tested against the criterion of usefulness. The purpose of this study is to design of knowledge base for automatic book classification which can be put to use in library operation, and to present a methodology of application of the automatic classification into the library. Since the enumerative classification schemes which are existing are manual systems, it cannot be applied to the automatic classification, the principle of faceted classification based on concept analysis is brought in and studied. The result of this study are summarized as follows : 1. The design of knowledge base confined the field of agriculture and medicine. 2. If title is entered by the computer keyboard it will be searched in knowledge base, and then be classified by the principle of automatic classification. 3. Program flowcharts are designed as a bases of classification procedures for automatic subject recognition and classification. 4. 283 books in agriculture, 196 books in medicine were drawn at random from Taegu University Library and Young-Nal Medical Center Library respectively. 5. The experiment of automatic classification is performed 143 books in agriculture 166 books in medicine except for other subject books. 6. It was proved that automatic book classification is possible by design of knowledge base. In addition the expected values from design of knowledge base for automatic book classification are as follows : 1. The prompt and accurate process of classification is possible. 2. Though some title is classified in any library, it can be classified the some classification number by a program. 3. The user can retrieve the classification codes of books for which he or she wants to search through the computer. 4. Since the concept coordination method is employed the representing of a multisubject concept is make simple. 5. By performing automatic book classification the automation of total system can be achieved. 6. The efficient international information transfer will be advanced since all the institution maintain unified classification number.

• 대한전기학회논문지
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• 제35권12호
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• pp.560-566
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• 1986

In the design of an RF discharge system, the electrical equivalence of the gas discharge must be known. With this knowledge, one can design a suitable matching network for a maximum power transfer from the RF generator into the discharge. For this purpose, an experiment has been conducted in which the electrical impedance (conductance and capacitance) was determined as a function of power. In parallel with this, a detailed theoretical analysis has been done and the results are in accord with those of our experiment. Design equations are also given for a simple matching network, and a design example is presented to demonstrate its application. During the actual operation of an RF discharge system, however, it has been often observed that the reflected power tends to vary in small values due to the changes in the impedance of the system. This problem can be relieved by adding an automatic impedance matching circuit to the system and this paper presents such an automatic impedance matching network.