머신러닝 기반 음성분석을 통한 체질량지수 분류 예측 - 한국 성인을 중심으로

김준호,박기현,김호석,이시우,김상혁,Kim, Junho,Park, Ki-Hyun,Kim, Ho-Seok,Lee, Siwoo,Kim, Sang-Hyuk 사상체질의학회 2021 사상체질의학회지 Vol.33 No.4

Objectives The purpose of this study was to check whether the classification of the individual's Body Mass Index (BMI) could be predicted by analyzing the voice data constructed at the Korean medicine data center (KDC) using machine learning. Methods In this study, we proposed a convolutional neural network (CNN)-based BMI classification model. The subjects of this study were Korean adults who had completed voice recording and BMI measurement in 2006-2015 among the data established at the Korean Medicine Data Center. Among them, 2,825 data were used for training to build the model, and 566 data were used to assess the performance of the model. As an input feature of CNN, Mel-frequency cepstral coefficient (MFCC) extracted from vowel utterances was used. A model was constructed to predict a total of four groups according to gender and BMI criteria: overweight male, normal male, overweight female, and normal female. Results & Conclusions Performance evaluation was conducted using F1-score and Accuracy. As a result of the prediction for four groups, The average accuracy was 0.6016, and the average F1-score was 0.5922. Although it showed good performance in gender discrimination, it is judged that performance improvement through follow-up studies is necessary for distinguishing BMI within gender. As research on deep learning is active, performance improvement is expected through future research.

헬기 MRO 비즈니스의 잠재력

김준호,황창전,Kim, Joune ho,Hwang, Chang jeon 항공우주시스템공학회 2014 항공우주시스템공학회지 Vol.8 No.3

Since the global economic crisis in year 2008, the world civil helicopter market has been growing recently. According to the market outlook in the next decade, the demand of civil helicopter will be driven by the demand of Private & Corporate, Oil & Gas, Off-shore and EMS(Emergency Medical Service) usages. On the other side, the demand of military market will be driven by the modification and upgrading for life extension or performance enhancement than the new helicopter development for replacing old models. To summarize these situations, the demand of MRO(Maintenance, Repair & Overhaul) market has also been on the rise because of the demand due to above several usages in civil side and the life-extension in military side. Through the MRO market analysis for characteristics, developmental trends and a supply chain, this paper describes that the potential of MRO business is considerably large as a propulsive power of domestic helicopter industry. And also, it proposes the construction direction of MRO network because the domestic industry must make the developmental awareness and reliability a stepping-stone towards own helicopter.

Solvent-Free Preparation of Fluorinated Polythiophene Nano-Particles by Supercritical CO₂ RESOLV Process

김준호,( Hullathy Subban Ganapathy ),( Seung Ho Kim ),임권택 한국공업화학회 2006 한국공업화학회 연구논문 초록집 Vol.2006 No.1

김준호의 독서일기-청소년

김준호,Kim, Jun-Ho 대한출판문화협회 2006 출판저널 Vol.363 No.-

IDT형 Lamb 파 센서에 의한 판상의 균열 검출

김준호,노용래,Kim, Jun-Ho,Roh, Yong-Rae 한국음향학회 2010 韓國音響學會誌 Vol.29 No.8

본 논문에서는 판 형상의 구조물에 발생한 균열의 형상과 개수 등을 진단할 수 있는 Inter-Digital Transducer (IDT)형 Lamb 파 센서를 제안하고 그 타당성을 실험적으로 검증하였다. IDT형 Lamb 파 센서는 기존의 패치형 압전 센서보다 작동 주파수의 조절이 용이하고, finger의 형상에 의해 지향성을 조절할 수 있다는 등의 장점이 있다. 본 논문에서는 무지향성을 가지는 환상형 IDT형 센서와 높은 지향성을 가지는 사각형 IDT형 센서를 설계, 제작하고, 이들에 의해 알루미늄 판을 전파하는 Lamb 파의 전파시간과 진폭의 변화를 측정, 분석하여 판 내에 발생한 균열의 길이, 개수 및 각도를 평가하고, 제안한 IDT 센서의 효용성을 고찰하였다. In this paper, an Inter-Digital Transducer (IDT) type Lamb wave sensor is proposed to estimate the geometry and number of cracks on a plate structure, and its validity is checked through experiments. This IDT type sensor is more readily controllable than conventional patch type piezoelectric sensors to modify its operation frequency and directionality by altering its finger patterns. In this work, omni-directional annular IDT and highly directional rectangular IDT sensors are designed and fabricated. The IDT sensors are used to diagnose the length, number and orientation of cracks on an aluminum plate by measuring the amplitude and time of flight of Lamb waves. The results are analyzed to discuss the efficacy of the IDT sensors.

김준호의 독서일기

김준호,Kim, Jun-Ho 대한출판문화협회 2006 출판저널 Vol.371 No.-

자산담보부 단기사채를 활용한 해외발전사업 수주확대방안

김준호,문윤재,이재헌,Kim, Joon-Ho,Moon, Yoon-Jae,Lee, Jae-Heon 한국플랜트학회 2015 플랜트 저널 Vol.11 No.1

This study is about whether the new Project Finance scheme called "Asset Backed Short Term Bond(ABSTB)" with Project Finance Guarantee Cover provided by Korean Exim Bank(KEXIM) is an appropriate and valid financing structure, through close examinations on domestic and overseas IPP case studies. This study clearly indicates that (i) the interest rate of ABSTB with KEXIM's Project Finance Guarantee is relatively more competitive than the interest rate of other ABSTB guaranteed by EPC Companies (ii) the lower credit rated EPC companies make higher ROE(Return on Equity) through this financing structure. Lastly, Korean EPC Companies can secure profitability through this innovative financing scheme which will also lead to winning more power plant Contracts and become globally competitive. 본 연구는 최근 도입된 단기사채를 통해 한국수출입은행의 대외채무보증과 연계하여 자산유동화 구조에 접목한 자산담보부 단기사채의 금리를 추정하고 해외 투자개발형 민자발전사업의 수주 확대를 위한 프로젝트파이낸스의 한 방안으로 이용할 수 있는지에 대한 것이다. 회사채 신용등급 AA-부터 BBB+까지 건설사 자산담보부 단기사채와 비교한 결과, 자산 유동화 구조와 접목한 한국수출입은행의 대외채무보증부 자산담보부 단기사채는 금리 경쟁력이 있고, 프로젝트의 자기자본수익률이 개선됨을 확인할 수 있었다. 특히, 본 금융구조는 회사채 등급이 낮은 시공사에 적용할수록 더 높은 자기자본수익률 확보가 가능함을 알 수 있었다. 이를 통해, 경쟁력 있는 자산담보부 단기사채 금융조건은 수요 창출 및 수익성 확보는 물론 우리기업의 해외 투자개발형 민자발전사업 수주확대에 기여할 것으로 기대된다.

인공지능

김준호,Kim, Jun-Ho 한국정보통신기술협회 2007 TTA저널 Vol.112 No.-

기술의 발달에 따라 사람들이 컴퓨터나 인터넷에 바라는 것이 내가 시킨 일을 정확히 수행하는 것에서 내가 원하는 것을 수행하는 것으로 변화하고 있다. 이를 위해서는 최근 많이 언급되고 있는 Web 2.0의 시대가 Web 3.0의 시대로 발전하는 것을 의미한다. 우선 Web 2.0과Web 3.0의 개념을 살펴보기로 한다.

Ti base alloy 의 플라즈마 질화

김준호,이창희,윤의박 ( Joon Ho Kim,Chang Hee Lee,Eui Pak Yoon ) 대한금속재료학회 1997 大韓金屬學會會報 Vol.10 No.1

식물의 대사에 미치는 요소질소의 영향 (2) 대맥근에 (大麥根) 흡수된 후의 질소대사

김준호 (Joon Ho Kim) 한국식물학회 1962 Journal of Plant Biology Vol.5 No.2

KIM. Joon Ho (Dept. of Biology, Kongju Teacher`s College): The effects of urea nitrogen on the metabolism of plants. Ⅱ. The response of some nitrogen components of barley to urea and other nitrogen in water culture. Kor. Jour. Bot. V(2), 6-12. 1962. For the comparison with the previous paper (4) the present report deals with the absorption and metabolism of urea and other nitrogen ions in barley seedling absorbed through root. 1. The amount of nitrate in barley treated with urea reach it pcak on the 8 th day, NO_3 on the 4 th, NH_4 on the 6 th or 8th. respectively. 2. The ammonia content in urea group reaches its peak on the 6 th day but other groups on the 4 th day. The present data in the urea group show to shorten 4 days compared with that of the previous paper (4). 3. The content of total amide from the present data are gradually increased on all of the groups during this experiment. These are agreement with the result of the previous paper (4). 4. The alcohol soluble nitrogen in the urea group shows the similar tendency to the NaNO_3 group but reaches its peak 2 days later than in the (NH4)_2SO_4 group. 5. The content of total nitroaen in the urea series has the lowest amount at the beginning while the richest from the 4th day after. These would be explained on that the absorption of urea is delayed and the PH in the urea solution does not change, so called physiological neutralily. The author should like to express his sincere thanks to Prof. M. J. Lee of Seoul National University for his valuable advices.