• 대한한의학원전학회지
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• 제29권4호
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• pp.61-73
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• 2016

Objectives : Suwenliuqixuanzhumiyu is a book that strongly influenced the following generations' theory of five Circuits and six Qi. It is understood that Wangbing authored the book during the Tang dynasty, but another theory suggests that a nameless author devised the book falsely in Wangbing's name. A comprehensive research is greatly significant in the development of the theory of five Circuits and six Qi. Methods : The study will focus on the analysis on the truth about Suwenliuqixuanzhumiyu, its impact on the following generations' theory of five Circuits and six Qi, the contents and comparison of Suwen's xuanzhumiyu, and the 17 books and 27 chapters of xuanzhumiyu. Results & Conclusions : First, xuanzhu was authored by Wangbing sometime around 762 AD, and Suwenliuqixuanzhumiyu was written in 690 during the rule of Empress Wu Zetian, meaning that Wangbing is not the author of Suwenliuqixuanzhumiyu. Second, Wangbing's style of writing is regular yet elegant, and keeps itself within the range of medical style of writing, but Suwenliuqixuanzhumiyu is written in a very rough style, and finds itself within the range of Tao literatures and books on trickery. Third, Wangbing's xuanzhu is a commentary on Suwen, whereas Suwenliuqixuanzhumiyu is consisting of the theory of five Circuits and six Qi, and trickeries predictive picture. As such, the two books have entirely different characters. Theories that received relatively significant impacts to the following generations' the theory of five Circuits and six Qi include Gandeokbu, Jeongwhadaewha, and the Calculation method of normal Qi. Suwen's chapter on the theory of five Circuits and six Qi and Suwenliuqixuanzhumiyu have many inconsistent and differing theories, leading the scholars to believe that they are dealing with different theory of five Circuits and six Qi which derived from separate schools of beliefs.

• 한국전문물리치료학회지
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• 제11권3호
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• pp.59-70
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• 2004

The purpose of this study was to propose a task-related circuits program for stroke patients and to test the difference in functional improvements between patients undergoing conventional physical therapy and those participating in a task-related circuits exercise program. The subjects were 10 stroke in-patients of the Korea National Rehabilitation Center in Seoul. We measured the following variables: Motor Assessment Scale (MAS), Berg Balance Scale (BBS), Tone Assessment Scale (TAS), speed of gait, rate of step, physiological costs index, age, weight, height, site of lesion, onset day and whether the subject participated in an exercise program. Collected data were statistically analyzed by SPSS 10.0/PC using descriptive statistics, Mann-Whitney U test, Wilcoxon rank sum test and Spearman's correlation. The results of the experiment were as follows: (1) In the pre-test and post-test for function, there was not a statistical significance between the group partaking in a task-related circuits program and the group of conventional physical therapy (p>.05). (2) In the MAS, BBS and speed of gait test, the group undergoing conventional physical therapy showed a statistical significance (p<.05). (3) In the MAS, BBS, speed of gait, PCI, TAS (passive, associated reaction, TAS total score), the group of task-related circuits program showed a statistical significance (p<.05). As a result, the group participating in a task-related circuits program had a more functional improvement than the group participating in conventional physical therapy. Therefore, an intervention recommended for a stroke patient would be a task-related circuits program consisting of a longer session of each task for a more improved functional recovery.

• 한국산업정보학회논문지
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• 제19권1호
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• pp.61-67
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• 2014

센서 시스템과 같은 저전력 설계를 요구하는 시스템에서 기존의 동기방식의 회로는 낮은 전압에서 지연(delay)이 급격히 증가하여 시스템의 전체 성능을 유지할 수 없을 뿐만 아니라, 공정, 전압, 온도 변이 (PVT variation), 노화 등에 크게 영향을 받아서 올바른 동작을 기대할 수 없다. 따라서, 신뢰할 수 있는 초저전력 설계에서 비동기 회로가 스케일링 이슈를 해결할 수 있는 방법으로 최근 다시 고려되고 있다. 그러나, 디지털 시스템에서 동기회로를 NCL 회로로 모두 대체하는 것은 쉽지가 않기때문에 동기회로와 비동기 회로 사이의 연결이 꼭 필요하다. 본 논문에서는 동기회로와 비동기 회로를 연결할 수 있는 새로운 설계방법을 보이고, 0.18um 공정기술을 사용한 $4{\times}4$ 곱셈기를 사용해서 검증을 하였다.

• 한국정보처리학회논문지
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• 제3권3호
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• pp.640-654
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• 1996

본 논문에서는 BDD(Binary Decision Diagrams) 를 이용한 다단계 리드뮬러회로 합성 방법을 제시한다. 기존의 다단계 노리 합성 도구인 FACTOR에서는 논리 함수를 입력 분 할에 의해 맵 형태의 행렬로 표현하고 행렬 연산을 통해 다단계 회로를합성한다. 이 방법은 논리 합성의 입력으로 맵을 사용하기 때문에 입력 수에 따라 기억 공간이 지수 적으로 중가하고 이에 비례하는 연산 시간에 필요하게 되어 대규모 회로에서 잘 동작 되지 않는다. 이러한 단점을 해결하기 위해 기존의 방법과는 다른 새로운 시도로서 BDD 표현에 의해 최선의 패턴을 선택하므로 최소화된 다단계 리드뮬러회로를 구현한다. 본 논문에서 제시한 방법을 사용한 benchmark 회로의 실험 결과, 대부분의 회로에서 기존의 결과(2)에 비해 개선된 결과를 보인다. 특히, 대칭 함수에 대해서는 최적에 가까운 결과를 보인다. 대규모 회로에서 합성 결과를 개선하기 위해 최선의 입력 분할을 고려하므로 기존의 결과보다 개선된 결과를 얻었다.

• ETRI Journal
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• 제27권2호
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• pp.239-242
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• 2005

This paper introduces two different current differencing buffered amplifier (CDBA)-based synthetic floating inductance circuits. Both configurations use a grounded capacitor. They are fully integrable and provide the advantages of electronic tuning.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -1
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• pp.110-112
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• 2002

In this paper, a new technique for Thai isolated speech phoneme segmentation is proposed. Based on Thai speech feature, the isolated speech is first divided into low and high frequency components by using the technique of wavelet decomposition. Then the energy contour of each decomposed signal is computed and employed to locate phoneme boundary. To verity the proposed scheme, some experiments have been performed using 1,000 syllables data recorded from 10 speakers. The accuracy rates are 96.0, 89.9, 92.7 and 98.9% for initial consonant, vowel, final consonant and silence, respectively.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -1
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• pp.70-73
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• 2002

High frequency digital LSI circuits are usually composed of many sub-circuits coupled with interconnects. They sometimes causes serious problems of the fault switching by time-delays, crosstalks, reflections of signals and so on. Therefore, it is very important to develop a user-friendly simulator for solving these problems. Although a moment matching method is widely used as the reduction technique of interconnects, it may happen to arise erroneous results for evaluating the poles far from the origin. In this paper, we show an asymptotic method in the complex frequency-domain, where we calculate the exact poles and residues giving large effect to the transient responses. Then, the interconnects are replaced by the asymptotic equivalent circuits using the poles and residues. Thus, we can develop a users-friendly simulator using the equivalent circuits.

• 전자공학회논문지C
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• 제35C권4호
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• pp.11-20
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• 1998

Fault simulatior has been used to compute exact fault coverages of test vectors for digial circuits. But it is time consuming because execution time is proportional to square of circuit size. Recently, several algorithms for testability analysis have been published to cope with these problems. COP is very fast and accurate but cannot be used for sequential circuits, while STAFAN can be used for sequential circuits but needs vast amount of execution time due to good circuit simulation. We proposed EXTASEC which gave fast and accurate fault coverage. But it shows noticeable errors for a few sequential circuits. In this paper, it is shown that the inaccuracy is due to uninitializble flipflops, and we propose ITEM to improve the EXTASEC algorithm. ITEM is an improved evaluation method of fault coverage by analysis of backward lines and uninitializable flipflops. It is expected to perform efficiently for very large circuits where execution time is critical.

• Journal of Electrical Engineering and Technology
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• 제12권1호
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• pp.217-224
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• 2017

The analysis and design process of the LCL filter with passive damping circuits for three-phase grid-connected inverter are presented based on the generalized model of LCL filter. Several types of the passive damping circuits in previous studies could be compared and analyzed by using the generalized model considering various design criteria of passive damping circuits. According to the analysis in this paper, a reasonable configuration of passive damping circuits for three-phase grid-connected inverters is proposed. The validity of the proposed design process is verified by informative simulation and experimental results.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제51권6호
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• pp.307-312
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• 2002

Inter-turn short circuits can have significant effects on a generator and its performance. The Inter-turn short circuits sensor for synchronous generator's field winding has been developed. The sensor, installed in the generator air-gap, senses the slot leakage flux of field winding and produces a voltage waveform proportional to the rate of change of the flux. For identification of reliability for sensor, a shorted- turn test was performed at the Seoinchon combined cycle power plant on gas turbine generator and stim turbine generator. This sensor will be used as a detecting of Inter-turn short circuits for synchronous generator's field winding.