감성 평가를 이용한 듣기 좋은 음성 합성음에 대한 연구

박용국,김재국,전용웅,조암,Park, Yong-Kuk,Kim, Jae-Kuk,Jeon, Yong-Woong,Cho, Am 대한인간공학회 2002 大韓人間工學會誌 Vol.21 No.1

As the method of providing information is getting multimedia, the synthetic voice is used in not only CTI(Computer Telephony Integration), information service for the blind, but also applications on internet. But properties of synthetic voice, such as speech rate, pitch, timbre and so on, are not adjusted to customers' preference but providers' preference. In order to consider customers' preference, this study proposed four subjective factors of voice through the evaluation of voice using the method of sensibility ergonomics. And the relation synthetic voice to be agreeable to the ear with emotional images was formulated as a fuzzy model. Consequently, this study proposed the speech rate and pitch of synthetic voice which is agreeable to the ear.

Tetrodotoxin 중독가토(中毒家兎)의 심전도학적(心電圖學的) 연구(硏究)

박용국,신홍기,김기순,Park, Yong-Kuk,Shin, Hong-Kee,Kim, Kee-Soon 대한생리학회 1976 대한생리학회지 Vol.10 No.1

Tetrodotoxin (TTX) is the purified active principle responsible for tetrodon (Puffer-fish) poisoning which has long been known in the Orient. The pharmacological actions of TTX have been rather extensively investigated. Two of the most prominent effects of intravenousely administered TTX are severe hypotension and respiratory paralysis resulting from its depressant actions on tissues. This depressant actions of TTX in turn result from the selective inhibition of sodium-carrying mechanism which is essential to generation of the action potential. TTX differs from local anesthetics in that it does not affect potassium conductance. Although the mechanism of the hypotensive action of TTX remains a subject of controversy, most investigator agree that TTX-induced hypotension is caused by alteration in the blood vessels rather than the heart. Not only the study on the effects of TTX on cardiac function is meager but the results of reported works are often contradictory. The present study was undertaken to investigate the effect of TTX on the electrocardiogram of the rabbit and to compare them with well known electrocardiographical characteristics found in digitalis and quinidine intoxicated animals. The results obtained from the present study are summarized as follows. 1. No changes were found in P-R interval and QRS duration after i.v. administration of $1.0\;{\mu}g/kg\;to\;1.5\;{\mu}g/kg$ TTX to the animals. It is obvious that there were no conduction disturbance between atria and ventricles as well as in the ventricular tissue. 2. In $1.0\;{\mu}g/kg$ TTX group, S-T interval and T-P segment were not changed whereas marked changes were observed in $1.5\;{\mu}g/kg$ TTX group. 3. The first and second degree A-V blocks appeared in the $2.0\;{\mu}g/kg$ TTX group. 4. TTX differs from digitalis and quinidine in that it does not cause S-T interval depression and T-wave inversion. In contrast with digitalis, TTX caused Q-T interval prolongation.

점용접부가 폐단면 박판 부재의 강성에 미치는 영향

박용국,김진곤,Park Yong Kuk,Kim Jin Gon 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.2

For engineers in the industry, this study considers a reliable and practical finite element modeling technique to estimate the behavior of closed thin-walled members with spot weldings. Dynamic and static experiments confirm that the technique - modeling the spot weldings with solid elements which have the adjusted rotational freedoms and fill the welding space - Yields satisfactory results. Numerical studies on the double hat-shaped members. adopting this modeling technique. show the effect of the spot welding Pitch and the spot welding location in the flange on the stiffness of the members Using the principal stiffness and newly proposed GSPI(global stiffness performance index), we also carefully examine how the spot welding curvature, and sectional shape, etc.. synthetically influence the stiffness of a real excavator pillar in the field.

산야유 $\beta-Casein$의 효소 가수분해 특성과 가수분해물의 Angiotensin Converting Enzyme 저해 효과

박용국,권일경,김거유,Park Yong-Kuk,Kwon Il-Kyoung,Kim Gur-Yoo 한국축산식품학회 2005 한국축산식품학회지 Vol.25 No.2

산양유 $\beta-casein$의 효소에 의한 가수분해 특성과 가수분해물의 ACE 저해 효과를 측정하고자 산양유의 $\beta-casein$을 양이온 교환 컬럼인 Mono S HR 5/5를 이용하여 분리하였으며 분리된 $\beta-casein$을 동물성 분해효소인 trypsin으로 처리하여 가수분해 특성을 확인하였고 가수분해물의 ACE 저해활성을 측정하였다. Mono S HR 5/5 양이온 교환 컬럼을 이용한 산양유 산 케이신으로 부터 순수한 $\beta-casein$의 분리는 SDS-PAGE를 이용하여 확인한 결과 순수한 $\beta-casein$의 분리가 이루어졌음을 확인할 수 있었다. $\beta-casein$을 $37^{\circ}C4$에서 trypsin으로 처리하여 전기영동으로 확인한 결과 가수분해 직후부터 $\beta-casein$ 위치의 band가 희미해지기 시작하고 저분자량의 band가 나타나기 시작하였으나 120분이 지난 후에는 모든 band가 가수분해되어 사라졌고 산양유에서 분리된 $\beta-casein$을 trypsin으로 처리하여 120분 경과 후 그 가수분해물을 이용하여 ACE 저해효과를 측정한 결과 가수분해하지 않은 $\beta-casein$은 $1.80\pm1.21\%$의 ACE 저해활성을 보였으나 trypsin으로 가수분해하여 ACE 저해 활성을 측정하였을 때 $25.36\pm0.79\%$의 저해 활성을 나타내었으며, trypsin에 의한 $\beta-casein$가수분해물의 $IC_{50}$을 측정한 결과 $308.7\pm2.77({\mu}g/mL)$로 나타났다. This study was carried out to understand hyrolytic characteristics of $\beta-casein$ by enzyme in goat milk and to measure the inhibition effect of the ACE of the hydrolysate. In order to conduct the experiment, $\beta-casein$ of goat milk was separated using Mono S HR 5/5, a cation exchange column. The separated $\beta-casein$ was treated with trypsin of animal hydrolysis enzymes, in an effort to verify the characteristics of hydrolysis. The inhibition activity of ACE was measured and the results are as follows. By analyzing the hydrolysate separated from the trypsin-processed $\beta-casein$ of goat milk, the inhibition effect of the ACE was measured trypsin-hydrolyzed $\beta-casein$ demonstrated a $25.36\pm0.79\%$ of inhibition effect and the $IC_{50}$ of the hydrolysate from the trypsin-processed $\beta-casein$ reached $308.7\pm2.77({\mu}g/mL)$.

광역 열 네트워크망의 리턴수와 공급수 활용 및 분산 열원 융합 건물 냉난방 최적 운영 기법

박용국(Yong Kuk Park),이민구(Min Goo Lee),이태훈(Tae Hoon Lee),김태원(Tae Won Kim) 대한전자공학회 2021 전자공학회논문지 Vol.58 No.9

본 논문에서는 광역 열 네트워크망의 열 에너지와 다양한 분산 열원으로 구성되어 있는 마이크로 열 그리드에서 효과적인 건물 냉난방 운영 기법을 제안한다. 기존의 지역난방 열 공급은 대형 열병합 발전소를 통해 특정 지역을 대상으로 열 에너지를 공급하는 광역 열 공급 체계가 대부분을 차지하고 있다. 따라서 마이크로 열 그리드의 에너지 효율을 제고하기 위해 이러한 광역 열 네트워크망의 열 에너지를 분산자원과 융합하여 운영해야 한다. 본 논문에서는 마이크로 열 그리드에서 광역 열 네트워크망의 열에너지를 활용하고 이를 다양한 분산 열원과 융합하여 운영할 수 있는 건물 냉난방 운영 모델을 도출하였으며 시뮬레이션을 통해 제안된 기법의 냉난방 최적화 성능을 확인하였다. In this paper, we propose an effective building heating and cooling approach in micro thermal grid composed of variously distributed thermal resources coupled with heat energy of district heating network. Most of conventional district heating system have been supplying heating energy from a large-scale CHP. Therefore, for enhancing the energy efficiency of micro thermal grid, it should be possible to operate the micro thermal grid made up of diverse thermal resource coupled with district heating network. Consequently, the effective building heating and cooling model based on microgrid thermal resource integrated with district heating network energy was derived, and subsequent simulation validated it’s optimized performance.

스마트 팩토리 에너지 절감을 위한 Energy-aware Production Scheduling의 영향인자 분석

박용국(Yong Kuk Park),이민구(Min Goo Lee),이태훈(Tae Hoon Lee) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6

The Imperfection Feature Effects on the I/Q modulator in the RF transmitter

박용국(Yong-Kuk Park),고재형(Jae-Hyeong Ko),원광호(Kwang-HO Won),김형석(Hyeong-Seok KIM) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.7(초록집)

회로 특성 파라미터에 근거한 전력 증폭기의 비선형 응답 특성

박용국(Yong-Kuk Park),김형석(Hyeong-Seok Kim) 대한전기학회 2012 전기학회논문지 Vol.61 No.5

In this paper, a novel analysis on the nonlinear response of a power amplifier (PA) with the intermodulation distortion (IMD) asymmetry is proposed based on the mutislice behavioral model. The coefficients of the odd-order and even-order polynomial of that model are represented with the PA practical circuit parameters such as intercept points, gain and amplitudes of excitation inputs. We also develop the analytic expressions to distinguish baseband frequency effect from second harmonic effect on the IMD asymmetry. We also validate the derived analytic expressions through measurements.

가변 및 민감성 부하를 고려한 대단위 가상 발전소 운영 방법

박용국(Yong Kuk Park),이민구(Min Goo Lee),정경권(Kyung Kwon Jung),이용구(Yong-Gu Lee) 대한전자공학회 2015 전자공학회논문지 Vol.52 No.5

가상발전소(Virtual Power Plant)는 비상발전(DG), 열병합발전(CHP), 에너지 저장 장치(ESS), 부하(Load)등과 같은 분산 에너지 자원을 ICT기반의 기술로 연계하여 하나의 단일 발전소와 같이 운영하는 기술이다. 지금까지의 가상발전소는 하나의 가상발전 플랫폼을 통하여 광범위하게 산재해 있는 다양한 분산 에너지 자원을 네트워크로 연결하는 구조를 기반으로 개발되고 실증되었다. 그러나 분산 에너지 자원 종류 및 수가 지속적으로 증가할 경우 이러한 분산 에너지 자원과 관련된 데이터 또한 기하급수적으로 증가할 수밖에 없으며 분산 에너지 자원의 분포가 광범위한 지역에 분포되어 있는 경우 하나의 가상발전 플랫폼으로 이들 모든 자원에 대한 네트워크를 중앙 집중형으로 가져가는 것은 네트워크 구성을 위한 기술적, 비용적 측면에서 매우 비효율적이다. 따라서 본 논문에서는 광범위한 지역에 분포되어 있는 분산 에너지 자원을 효율적으로 관리함으로써 시스템 부하에 따른 오류 확률을 낮추고, 분산 에너지 자원과의 데이터 교환의 견고성과 가상발전소의 확장성을 확보할 수 있는 대단위 가상 발전소 구성 방법을 제안한다. 또한 대단위 가상 발전소 구성 시 분산 에너지 자원을 직접적으로 제어하고 모니터링하는 소단위 가상발전 플랫폼에서 가변 및 민감성 부하를 고려한 최적의 자원 스케줄링 방법 또한 시뮬레이션을 통해 그 결과의 유효성을 검증한다. Nowadays a Virtual Power Plant (VPP) represents an aggregation of distributed energy resource such as Distributed Generation (DG), Combined Heat and Power generation (CHP), Energy Storage Systems (ESS) and load in order to operate as a single power plant by using Information and Communication Technologies, ICT. The VPP has been developed and verified based on a single virtual plant platform which is connected with a number of various distributed energy resources. As the VPP’s distributed energy resources increase, so does the number of data from distributed energy. Moreover, it is obviously inefficient in the aspects of technique and cost that a virtual plant platform operates in a centralized manner over widespread region. In this paper the concept of the large-scale VPP which can reduce a error probability of system’s load and increase the robustness of data exchange among distributed energy resources will be proposed. In addition, it can directly control and supervise energy resource by making small size’s virtual platform which can make a optimal resource scheduling to consider of variable and sensitive load in the large-scale VPP. It makes certain the result is verified by simulation.

에너지 상황 복합 감지 기반 통합 제어 알고리즘

박용국(Yong Kuk Park),강정훈(Jeong Hun Kang),이민구(Min Goo Lee),고원식(Won Sik Ko),최태준(Tae Jun Choi) 한국통신학회 2009 한국통신학회 학술대회논문집 Vol.2009 No.6