• 대한전자공학회논문지
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• 제24권5호
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• pp.896-904
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• 1987

In this paper, a design method for sequential circuit which is easy to have Built-in Self Test is kproposed using the functional advantages of multifunctional BILBO and LSSD. To achieve the hardware reduction, it is designed that a multifunctional BILBO has double operational functions of NLFSR and LFSR, when neccessary, and that test signal could be used as an input-output signal in the same line. By applying the proposed multifunctional BILBO to the sequential PLA, the test patterns and the additional circuit could be reduced in test operation and the propagation delay is vanished in normal operation, as we expected. Above them, the partitioned method for large scale sequential circuit is also suggested and it is observed that test patterns and additional circuit in them reduced by this method.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2007년도 하계학술대회 논문집
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• pp.394-396
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• 2007

In this paper proposed to neural network PI self-tuning direct controller using Error back propagation algorithm. Proposed controller applies to speed controller and current controller. Also, this built up the interface environment to drive it simply and exactly in any kind of reference, environment fluent and parameter transaction of PMSM. Neural network PI self-tuning simulator using Visual C++ and Matlab Simulation is organized to construct this environment, Built up interface has it's own purpose that even the user who don't have the accurate knowledge of Neural network can embody operation characteristic rapidly and easily.

• 한국산학기술학회논문지
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• 제14권1호
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• pp.358-362
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• 2013

본 논문을 통해 연구된 자가 진단 기능을 갖는 RFID 리더 platform은 자동 상태 인식 기능 및 보고 기능이 탑재되어 있고, 자동 업그레이드 기능과 복수 리더 환경에서 주파수 운영 정책을 사용하기 때문에 앞으로 시스템의 전체적인 운영 환경이 점점 대형화 되고, 멀티 환경에서의 활용도에서 많으며, 국내 RFID 시장 뿐 아니라 세계시장에서 많이 발생하는 요구를 충족할 수 있는 기술이다.

• International journal of advanced smart convergence
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• 제6권2호
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• pp.1-8
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• 2017

Recently, the development of the information communication industry has made many changes in the industrial acoustic industry. Especially, it has a great influence on the change of system and equipment of acoustic system. Analog equipment is changing to digital equipment, and integrated control equipment makes it easier to operate and manage the sound system. However, the integrated control system currently on the market is only controllable for some devices. In this paper, we propose a new AoIP - based system configuration method, which enables the operation status monitoring, unmanned operation and self - diagnosis of equipment. As a result of the study, it is confirmed that the proposed system can be operated, monitored, and self - diagnosed at remote sites. It is expected that an AoIP- based sound system will be the industry standard in the future.

• 전기학회논문지
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• 제57권11호
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• pp.2061-2065
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• 2008

In the conventional operation of ice-storage system based on operator's experience and judgement, the failure in forecast of cooling load occurs frequently due to operator's misjudgement and unskilled operation. This study presents the method of constructing self-organizing fuzzy models which forecast tomorrow temperature, humidity and cooling load periodically for economic and efficient operation of ice-storage system. To check the effectiveness and feasibility of the suggested algorithm, the actual example for forecasting temperature, humidity and cooling load of ice- storage system in KEPCO training institute, Sokcho, is examined. The computer simulation results show that the accuracy of temperature, humidity, cooling load forecast of the suggested algorithm is higher than that of the conventional methods.

• 대한간호학회지
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• 제29권4호
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• pp.817-828
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• 1999

This is a descriptive study on quality of life(QOL) and related factors of ostomates to provide a basic data for development of nursing interventions. The subjects were 110 ostomates who were members of the Daegu or Daejon branches of the Korean Ostomy Association. Data collection was performed between March 1st and April 6th, 1998. Measurements of QOL, self-care, family support, self-esteem, and hope were used as the study tools. Data were analyzed with the SAS program by using t-test, ANOVA Pearson correlation and stepwise multiple regression. The results are as follows : 1) The score on the QOL scale ranged from 97 to 226 with a mean of 164.53($\pm$28.29). 2) The score of QOL on the general and ostomate-related characteristics showed significant differences according to monthly income, monthly participation in ostomate meetings, combined treatments after operation, types of evacuation management, problems of ostomy, help in caring for the ostomy, length of time since ostomate surgery, and presence or absence of readmission after discharge. 3) There were significant positive correlations between quality of life and other factors : self-esteem(r＝0.7107, P＜0.001), hope(r＝0.6584, P＜0.001) family support(r＝0.6191, P＜0.001), perception of health condition(r＝0.6017, P＜0.001), and self-care (r＝0.2286, P＜0.05). 4) The variables that affected the quality of life of the subjects were self-esteem, level of family support, perception of health condition, monthly participation in ostomate meetings, combined treatments after operation, monthly income, level of hope, and age in that order. The variance of quality of life was $R^2$＝77.20 percent by calculating the sum of those variables. In conclusion, it is necessary for nursing intervention to promote self-esteem, family support, and hope in the care of ostomates in order to improve QOL.

• 한국항행학회논문지
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• 제27권2호
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• pp.182-189
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• 2023

깊이 추정은 차량, 로봇, 드론의 자율주행을 위한 3차원 지도 생성의 핵심 기술이다. 기존의 센서 기반 깊이 추정 방식은 정확도는 높지만 가격이 비싸고 해상도가 낮다. 반면 카메라 기반 깊이 추정 방식은 해상도가 높고 가격이 저렴하지만 정확도가 낮다. 본 연구에서는 무인항공기 카메라의 깊이 추정 성능 향상을 위해 Self-Attention 기반의 비지도 단안 카메라 영상 깊이 추정을 제안한다. 네트워크에 Self-Attention 연산을 적용하여 전역 특징 추출 성능을 향상시킨다. 또한 카메라 파라미터를 학습하는 네트워크를 추가하여 카메라 칼리브레이션이 안되어있는 이미지 데이터에서도 사용 가능하게 한다. 공간 데이터 생성을 위해 추정된 깊이와 카메라 포즈는 카메라 파라미터를 이용하여 포인트 클라우드로 변환되고, 포인트 클라우드는 Octree 구조의 점유 그리드를 사용하여 3D 맵으로 매핑된다. 제안된 네트워크는 합성 이미지와 Mid-Air 데이터 세트의 깊이 시퀀스를 사용하여 평가된다. 제안하는 네트워크는 이전 연구에 비해 7.69% 더 낮은 오류 값을 보여주었다.

• 전기전자학회논문지
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• 제26권3호
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• pp.483-487
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• 2022

본 논문에서는 태양에너지 하베스팅을 위한 자가발전 아두이노 시스템을 설계하고 이의 동작을 설명한다. 이를 위해서 아두이노 시스템이 시시각각 변하는 태양에너지의 양을 센싱하고 이에 따라서 active mode와 sleep mode의 동작 시간의 비율을 스스로 조정해서 주어진 태양 빛의 세기에 대해서 최적으로 동작할 수 있는 동작 조건을 스스로 찾아가는 방법을 설명하고 이의 동작을 검증한다. 본 논문에서 개발한 active mode와 sleep mode의 동작 시간의 비율의 자가 조절을 통해서 태양 빛의 세기가 충분히 강할 경우에는 아두이노 시스템이 active mode로 지속적으로 구동되고, 태양광으로부터 전력을 충분히 공급받을 수 없는 경우 sleep mode를 사용하여 전력 소모를 최소화한다. 그 결과 active mode를 지속적으로 구동하는 것에 비해 sleep mode를 사용하는 경우 전력 소모를 최대 81.7% 줄여 에너지 소비를 최소화할 수 있다는 것을 알 수 있다. 또한 빛의 세기가 중간 수준일 때에는 active mode와 sleep mode의 비율을 빛의 세기에 맞게 적정하게 배분하여 동작하게 한다. 본 논문에서 제안한, 스스로 active mode와 sleep mode의 동작 시간 비율을 조절하는 방법은 특히 높은 전력 소비 효율 특성이 필요한 웨어러블 및 바이오-헬스용 자가발전 시스템을 에너지 효율적으로 동작시킬 때에 도움이 될 것으로 생각된다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1988년도 한국자동제어학술회의논문집(국내학술편); 한국전력공사연수원, 서울; 21-22 Oct. 1988
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• pp.452-456
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• 1988

A PID controller must need not only good servo response but also little operation of a control valve. We suggest a direct pole-placement PID self-tuning algorithm using the structure of derivative-of-output controller and Bezout identity. This algorithm can much reduce the change of output of controller and well follow the desired trajectory.

• 간호행정학회지
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• 제15권3호
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• pp.355-364
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• 2009

Purpose: The purpose of the research is to investigate the effect of self-image on work performance and controlling ability of self-leadership in relationship in between self-image and work performance. Methods: The data were collected from Mar 16th to April 15th 2009, a descriptive survey study was conducted with 140 nurses. Results: The hypothesis "Self image of nurse would affect on work performance" is supported ($R^2$=.335, p<.001). In the hypothesis of "Self-leadership would have controlling ability on self-image and work performance", as a result of regression analysis in independent variables of self-image(A) and self-leadership(B), adding relation of both variable($A{\times}B$) would increase in 36.6% (p<.05). Conclusion: Self-image of nurse was confirmed that it had positive effect on work performance and that it had moderating ability on relationship between self-image and work performance. The shaping and strategic operation are required to increase self-leadership and positive development on self-image of nursed.