• 한국생산제조학회지
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• 제7권3호
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• pp.29-36
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• 1998

In recent year, as the demand about low vibration and noise vehicle is increased constantly. automobile companies try to a lot of things to achieve this demand. Gear rattle vibration become an emergency problem to be cured at idling. There are two kinds method to reduce idle gear rattle vibration One is optimization of clutch damper design parameters(stiffness, hysteresis torque, preload, length of lst stage) the other is system parameters modification(inertia, drag torque, backlash, etc) But these methods are impossible to estimate influence rate of each gearpair on the idle gear rattle vibration. In this study, 14degrees of freedom nonlinear model is developed to analyze influnce rate of each gearpair on the idle gear rattle vibration and the counterplan to reduce the gear noise is suggeted through the shift system modification.

• 말소리와 음성과학
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• 제9권1호
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• pp.9-17
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• 2017

The current study examined speech rate and its variance in spontaneous Seoul Korean speech. The current study focused on factors affecting the variance of speech rate such as utterance length, individual speakers, and gender. The results revealed that, first, utterance length has a significant influence on speech rate. Longer utterances were spoken at a faster rate. Second, regarding the effect of utterance length, individual speakers differed significantly in their speaking rate. The variation between speakers and within speakers tended to increase as utterance length increases. Third, there were speakers' gender differences, indicating that males produced considerably faster speaking rate than females. Additionally, the current study implied that non-linguistic factors in spontaneous speech can affect the variance of speakers' speaking rate.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 하계종합학술대회 논문집(4)
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• pp.277-280
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• 2001

The preprocessing is very important course in speech signal processing. It influence the compression-rate in speech coding and the recognition-rate in speech recognition etc. In this paper, we propose that minimizing window-influence method with pitch period and start points. The proposed method is available for voiced detection and word labeling.

• 대한안전경영과학회지
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• 제14권3호
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• pp.85-92
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• 2012

In this study the real situation of apartment house in seoul is reproduced with multi-zone modeling program contam2.4. This model include immune building system(disinfection system) which is consist of dilution, Filter Technology and UVGI(ultra violet germicidal irrdiation). In this study experiments design method used for estimating interaction of HRV air change rate, UVGI air change rate and UVGI grade. Result show that HRV air change rate and UVGI air change rate is most influence factor for remove rate. also Interaction of HRV air change rate and UVGI air change rate is ost influence factor for remove rate.

• 한국농공학회:학술대회논문집
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• 한국농공학회 1998년도 학술발표회 발표논문집
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• pp.243-249
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• 1998

This study was conducted for analyzing the influence of outside temperature upon shading effect of greenhouses by simulation. The simulation program was tested by comparing predicted values to measured values and applied the Korean standard wide span glasshouse. The shading effect according to the variation of outside temperature was different by shading method and rate. The increasing rate of inside temperature with different shading rate was nearly propotional to the increasing value of outside temperature. The outside shading effect was a little better than inside shading.

• 대한기계학회논문집
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• 제17권10호
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• pp.2391-2397
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• 1993

The distribution of fatigue crack growth rate is influenced by the measuring interval and methods of calculation of crack growth rate. The purpose of this paper is to suggest a method for the evaluation of crack growth rate distribution without the influence. The constant ${\Delta}P$ test and the constant .DELTA.K test are executed by using the CT specimen. The measuring interval of (${\Delta}a$/W=0.0067~0.014) crack length is not affected by methods of the calculation of the fatigue crack growth rate is suggested.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 추계 학술논문 발표대회
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• pp.265-268
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• 2009

The purpose of this study is to analyze the casual relationship among Housing Transaction Index, Jeonse Rental Index and Interest Rate. To analyze the influence of interest rate in more detail, CD Interest rate and Spread are used as variables. Granger Casualty Test is used as a analysis tool, As a result, Spread is the cause variable of the Housing Transaction Index and the Housing Transaction Index is the cause variable of the CD Interest Rate. And also, CD Interest rate influences the Jeonse Rental Index and the Jeonse Rental Index has influence on the other variables.

• 한국항만경제학회지
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• 제32권3호
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• pp.67-81
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• 2016

본 연구의 목적은 브렉시트로 인한 세계 거시경제환경의 변화, 특히 당사국인 영국과 EU의 경기 및 환율의 변화가 한국의 컨테이너물동량에 미치는 영향을 분석하는데 있다. 분석을 위하여 2000-2016년의 월별시계열 데이터를 이용하고 장기적 관계를 위한 공적분 검정과 장기 및 단기 동학적 분석을 위한 VECM모형과 인과성 검정을 위한 VECM인과성 검정을 도입한다. 분석결과는 다음과 같다. 먼저, 한국 컨테이너물동량은 장기적으로는 EU의 경기와 환율에 의해서 영향을 받는다. 그리고 영국의 경기와 환율은 한국의 수출컨테이너물동량에만 한정하여 영향을 미친다. 두 번째, 단기적으로는 EU의 거시경제환경 변수 중 경기 상황보다는 유로화 환율이 한국 컨테이너물동량에 미친 영향 관계가 더욱 의미가 있는데, 이는 특히 수출컨테이너물동량의 경우 더욱 명확하다. 영국도 마찬가지로 경기의 영향은 유의성이 없지만 환율은 한국 수출컨테이너물동량에 대한 영향관계의 유의성이 커서 의미가 있다. 이러한 사실은 VECM인과성 검증에서도 잘 나타나 한국 총컨테이너물동량과 수출컨테이너물동량은 EU의 유로화환율에, 그리고 영국의 파운드화 환율은 한국의 수출컨테이너물동량에 대해서 인과성이 존재하는 것으로 확인되었다. 이상의 결과를 종합하면 영국의 브렉시트로 인한 영국 및 EU의 경기 및 환율 변화에 의한 한국 컨테이너물동량의 영향은 경기 변화보다는 환율변화에 의한 것이 더 크고 주로 수출컨테이너물동량에 집중하는 등 제한적으로 영향을 미칠 것으로 전망된다. 그리고 브렉시트 당사국인 영국보다는 EU의 경기 및 환율변화에 의한 영향이 좀 더 중요할 것으로 보인다.

• 한국건강관리협회지
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• 제4권1호
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• pp.28-38
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• 2006

Background : Phentermine classified by "sympathomimmetic amie", is a stimulant of sympatheic tone But there has been no concrete study which presents the influence of phentermine on autonomic nervous system. Analysis of Heart rate variability is reliable, non-invasive and very useful for evaluating function of autonomic nervous system. We tried to elucidate the influence of phentermine on autonomic nervovs system by heart rate variability. MethodsAmong the 70 candidates who participated in the double-blind case control study whichwas designed in purpose of approving whether- Adipekⓓ is effective for treatment of obesity, 45persons were folled up. From April, 2005 to May 2005, HRV of the candidates who takes phentermine or placebo for 1month, was recorded using BFM-5000ⓓ(medi-core) for 5 minutes in resting state. HRV measures were assessed by time-domain and by frequency- domain analysis. Time domain parameters contain SDNN(Standard Deviation of NN intervals) and RMSSD(Root-Mean-Square of Successive Differences), etc and frequency domain Parameters contain Total Power(TP), Low frequency(LF'0.04-0.15Hz) power. High Frequency(HF:0.15-0.4Hz) power and LF/HF ratio etc. Results: Intakes of phentermine reduce HRV significant1y. SDNN & RMSSD, the main tine domain parameters of HRV, were decreased significantly(P=0.007. 0.016). PSI(Physical Stress Index of Pressure Index) was increase significantly(P=0.002)The main frequency domain parameters(TP, LF & VLF), also decreased significantly. (P=0.024,0.033, 0.015)Conclusion: The result showed that intakes of phentermine reduce heart rate variability and influence on most parameters of HRV. So phentermine not only accelerates sympathetic tone, but also inhibit the balance and function of autonomic nervous system.

• 열처리공학회지
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• 제29권2호
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• pp.62-65
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• 2016

TIO thin films were deposited on the poly-carbonate substrates with RF magnetron sputtering under different sputtering power condition to investigate the influence of deposition rate on the electrical and optical properties of the films. Although, all films have the similar carrier concentration, the films prepared at a lower deposition rate of 4 nm/min show a higher mobility of $5.96cm^2\;V^{-1}S^{-1}$ due to the low surface roughness. In addition, optical transmittance is also influenced by a deposition rate. Based on the figure of merit, it can be concluded that the lower deposition rate effectively enhances the opto-electrical performance of IGZO films for use as transparent conducting oxides in flexible display applications.