• 한국정보처리학회논문지
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• 제5권1호
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• pp.202-214
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• 1998

명령어 수준에서 병렬성(Instruction-Level Parallelism, ILP)을 추출하는 것은 슈퍼스칼라 및 VLIW프로세서들의 성능 개선을 위한 효과적인 메커니즘이다. 이를 위하여 여러 가지 소프트웨어 기법들이 응용될 수 있다. 이들 기법 중 조건실행(predicated execution)은 명령어의 조건으로 참조되는 부울 소스 오퍼랜드의 값을 기본으로 명령어 조건적 실행 여부를 참조하여 분기명령을 제거함으로서 여러 기본 블록의 명령들을 하나의 기본블록으로 구성하여 ILP를 증가시키는 기법이다. 본 논문은 조건실행을 지원하는 ILP프로세서들의 성능개선을 위하여 기본 블록을 넘어선 광역 조건실행 지원 스케쥴링 알고리듬(global predicate-sensitive scheduling algorithm)을 제안한다. 또한 C 컴파일러와 시뮬레이터를 개발하고 다양한 벤치마크 프로그램에 대하여 제안된 알고리듬의 성능을 측정하고 타당성을 확인한다. 1, 2, 4이슈실행에 대한 성능 측정 결과, 평균 20%의 성능 개선이 확인되었다.

• 대한예방의학회:학술대회논문집
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• 대한예방의학회 1994년도 교수 연수회(역학)
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• pp.206-233
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• 1994

The Medical Research Council has for some years encouraged collaborative clinical trials in leukaemia and other cancers, reporting the results in the medical literature. One unreported result which deserves such publication is the development of the expertise to design and analyse such trials. This report was prepared by a group of British and American statisticians, but it is intended for people without any statistical expertise. Part!, which appears in this issue, discusses the design of such trials; Part II, which will appear separately in the January 1977 issue of the Journal, gives full instructions for the statistical analysis of such trials by means of life tables and the logrank test, including a worked example, and discusses the interpretation of trial results, including brief reports of particular trials. Both parts of this report are relevant to all clinical trials which study time to death, and would be equally relevant to clinical trials which study time to other particular classes of untoward event: first stroke, perhaps, or first relapse, metastasis, disease recurrence, thrombosis, transplant rejection, or death from a particular cause. Part I, in this issue, collects together ideas that have mostly already appeared in the medical literature, but Part II, next month, is the first simple account yet published for non-statistical physicians of how to analyse efficiently data from clinical trials of survival duration. Such trials include the majority of all clinical trials of cancer therapy; in cancer trials, however, it may be preferable to use these statistical methods to study time to local recurrence of tumour, or to study time to detectable metastatic spread, in addition to studying total survival. Solid tumours can be staged at diagnosis; if this, or any other available information in some other disease is an important determinant of outcome, it can be used to make the overall logrank test for the whole heterogeneous trial population more sensitive, and more intuitively satisfactory, for it will then only be necessary to compare like with like, and not, by chance, Stage I with Stage III.

• 한국인터넷방송통신학회논문지
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• 제23권2호
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• pp.209-214
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• 2023

에듀테크에 대한 관심은 팬데믹 시기를 거치면서 급증하였다. 대면 교육이 불가한 상황에서 에듀테크는 교육현장을 중심으로 담론 확산의 장(場)이 되었고, 대중들의 주요 관심사가 되었다. 이에 본 연구는 전국 주요 일간지의 에듀테크 기사를 검토하여 주요 담론의 내용과 특징, 쟁점을 분석하고 이에 따른 교육현장의 과제를 밝혔다. 에듀테크 담론은 초기에는 교육적 도구로써의 유용성을 강조한 담론이 대부분이었으나, 팬데믹 시기를 거치면서 새로운 쟁점이 부각되었다. 테크놀로지의 활용을 넘어서, 학습자의 의지를 어떻게 유도하고 지속시킬 것인가가 쟁점이 되었고 과제가 되었다. 또한 공교육의 장으로써 학교현장의 기록과 평가에 대한 공정성의 확보, 이와 관련된 사람들의 개인 정보 보호의 문제 등도 민감한 쟁점이 되었다. 에듀테크의 적용 과정에서 특정 기술 기업과 관련된 특혜 논쟁 또한 쟁점이 되었다. 이것은 기술의 확산 과정에서 불가피한 것으로, 에듀테크 적용 과정에서 해결해야 할 또 다른 과제로 남았다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 학술대회 논문집 정보 및 제어부문
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• pp.568-570
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• 2004

This paper presents a study of a position finding system using PSD Sensor and Pan/Tilt. The position of PSD(Position Sensitive Detector) sensor is calculated by the degree of pan-tilt and the difference in height between pan-tilt and PSD. For that, the DSP which control pan-tilt is used for precise operation. The PIC microcontroller process PSD sensor data that indicate light incident position. A user using computer can acquire the conditions of pan-tilt and PSD and issue an order.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.181-184
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• 2005

Operating conditions of photovoltaic power generator is very sensitive to the PV modules. The PV module's control is an importance issue in the removing DC ripple noise. In this paper, the phase-shifted-carrier technique, which is a new three-step dc-dc power multi-converter schemes, is applied to solar generator system to improve the output current waveform. The novel type of three-step dc-dc converter presented has many features such as the good output waveform, high efficiency, low switching losses, low acoustic noise. The circuit configuration is constructed by the conventional full-bridge type converter circuit using the isolated DC power supply for which the solar cell is very suitable. In the end, a circuit design for understanding three-step dc-dc converter and new solar power system were presented

• 비파괴검사학회지
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• 제27권3호
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• pp.262-267
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• 2007

Detection of gas leak from a tube is a very important issue in the quality control of machines such as the heat exchanger of an air-conditioner, because leakage of operating gas directly reduces the performance of machines. The acoustic emission (AE) method is a common way to detect leak of gas, however its application under the environment of mechanical vibration is restricted since most AE detectors are very sensitive to external vibration noise. In order to overcome this problem, we propose a method based on the mode analysis of the Lamb wave. In this method, the dominant Lamb mode and its frequency are found first, and then a proper band-pass filter is used to retain only this frequency component. In this way, we could improve the SNR (signal-to-noise ratio) of AE signal generated by gas leak from the tube even under vibratory environment.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2008년도 제39차 동계학술발표논문집 16권2호
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• pp.211-214
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• 2009

Edge detection always influenced by noise belong to the original image, therefore need use some methods to sort this issue, mean shift algorithm has the smooth function which suit for the edge detection purpose, so adopted to fade out the unimportant information, and the sensitive noise portions. After this section, use the Canny algorithm to pick up the contour of the objects we focus on, meanwhile select the Soble operator that has the orientation attribute to support the method work well. In final, take experiment and get the perfect result we wanted, make sure this method make sense and better than the sole Edge detection algorithm,

• 한국실내디자인학회논문집
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• 제15권5호
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• pp.20-27
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• 2006

Professional journal articles, while eye-catching, nay also be somewhat superficial and formal. In fact, interior design magazines focus on providing images rather than texts to appeal to readers. Thus, it has been difficult for interior design magazines to represent interior designers who are serious about their career. The KOSID Journal, on the other hand, is not a professional journal, but handles current Issues that are most sensitive and important to professional interior designers and provides understanding of contemporary interior design trends. In this respect, this study analyzed the contents of the KOSID Journal, from its founding issue (1983) until it began to serve academic purposes with the establishment of the Interior Design Association in 1992 and discussions of the interior design discourse of the time.

• Journal of Electrical Engineering and Technology
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• 제4권2호
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• pp.149-158
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• 2009

It is important to derive reliable parameter values in the measurement-based load model development of electric power systems. However parameter estimation tasks, in practice, often face the parameter identifiability issue; whether or not the model parameters can be estimated with a given input-output data set in reliable manner. This paper introduces concepts and practical definitions of the local identifiability of model parameters. A posteriori local identifiability is defined in the sense of nonlinear least squares. As numerical examples, local identifiability of third-order induction motor (IM) model and a Z-induction motor (Z-IM) model is studied. It is shown that parameter ill-conditioning can significantly affect on reliable parameter estimation task. Numerical studies show that local identifiability can be quite sensitive to input data and a given local solution. Finally, several countermeasures are proposed to overcome ill-conditioning problem in measurement-based load modeling.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 추계학술대회논문집
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• pp.665-670
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• 2002

Pleasantness or quietness becomes one of the most important factors for residential designs recently. Especially for apartments, the noise generated by falling objects becomes a sensitive issue these days. To overcome the problem of the impact noise in apartments, the floor design has been changed. To reduce the transmissibility of the noise, composite floor structures are devised and implemented for the construction of apartments. In this paper, the noise reduction performance of a composite floor plate with holes is analyzed. Computational modelings for the structures are developed and its performance is evaluated by using the finite element method. The results show that the noise can be well reduced with the multi-layer composite floor plates with holes.