Numerical study on visualization method for material distribution using photothermal effect

김무중,유재석,김동권,김현정 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.10

Visualization and imaging techniques have become increasingly essential in a wide range of industrial fields. A few imaging methodssuch as X-ray imaging, computed tomography and magnetic resonance imaging have been developed for medical applications to materialsthat are basically transparent or X-ray penetrable; however, reliable techniques for optically opaque materials such as semiconductorsor metallic circuits have not been suggested yet. The photothermal method has been developed mainly for the measurement of thermalproperties using characteristics that exhibit photothermal effects depending on the thermal properties of the materials. This study attemptsto numerically investigate the feasibility of using photothermal effects to visualize or measure the material distribution of opaque substances. For this purpose, we conducted numerical analyses of various intaglio patterns with approximate sizes of 1.2-6 mm in stainlesssteel 0.5 mm below copper. In addition, images of the intaglio patterns in stainless steel were reconstructed by two-dimensional numericalscanning. A quantitative comparison of the reconstructed results and the original geometries showed an average difference of 0.172mm and demonstrated the possibility of application to experimental imaging.

북한강유역 원삼국~한성백제기 물질문화의 연구 성과와 과제

김무중 중부고고학회 2017 중부고고학회 학술대회논문집 Vol.2017 No.1

“중부지역 원삼국문화와 낙랑” 에 대한 토론문

김무중 중부고고학회 2020 중부고고학회 학술대회논문집 Vol.2020 No.1

한국인을 위한 외국어 발음 교정 시스템의 개발 및 성능 평가

김무중,김효숙,김선주,김병기,하진영,권철홍,Kim Mu Jung,Kim Hyo Sook,Kim Sun Ju,Kim Byoung Gi,Ha Jin-Young,Kwon Chul Hong 대한음성학회 2003 말소리 Vol.46 No.-

In this paper, we present an English pronunciation correction system for Korean speakers and show some of experimental results on it. The aim of the system is to detect mispronounced phonemes in spoken words and to give appropriate correction comments to users. There are several English pronunciation correction systems adopting speech recognition technology, however, most of them use conventional speech recognition engines. From this reason, they could not give phoneme based correction comments to users. In our system, we build two kinds of phoneme models: standard native speaker models and Korean's error models. We also design recognition network based on phonemes to detect Koreans' common mispronunciations. We get 90% detection rate in insertion/deletion/replacement of phonemes, but we cannot get high detection rate in diphthong split and accents.

IDEFØ를 사용한 원가관리 프로세스 분석

김무중,김재준,이훈구 대한건축학회 2006 大韓建築學會論文集 : 構造系 Vol.22 No.4

The apartment housing in domestic construction industry has been had various and high-quality finishing material since the enforcement of price deregulation in 1998. Before the enforcement of price deregulation, the feasibility study of a housing project has not particular difficulties because uniform description of finishing work items were reflected and finishing work cost also was equalized. But, the recent distinction of finishing material based on the same floor plan brings about project cost variation, and many effects on construction management due to project cost increment.Accordingly, this paper performed an analysis based on cost management phase due to cost blackout, appearing on the beginning time of project, cost gradation caused by high-quality finishing work item, and cost reduction due to the degradation of finishing material after analysis of current apartment construction process focused on finishing work using IDEFØ process analysis technique. Through derived problem points after this analysis, this paper raised the necessity of finishing information system for cost management.

糖尿病 患者의 齒周狀態

金茂中,金錫煥 慶北大學校 齒科大學 1984 慶北齒大論文集 Vol.1 No.1

In order to obtain the basic data of periodontal treatment in diabetic patients, the periodontal status of 104 diabetic outpatients was compared with 127 other persons not having diabetes mellitus in Kyungpook National University Hospital, using Russell's periodontal index. It was found that: The severity of periodontal disease was significantly greater among the diabetic group(5.32±1.04) than among the non-diabetic group of patients(4.43±0.91). (p<0.001). Male periodontal status was the same as the female's in diabetic & control group. As age increased, the severity of periodontal disease increased significantly in diabetic and control group. The periodontal status of lower anterior teeth (5.82±0.84) was worst in diabetic group. The longer morbidity period in diabetic group, the worse periodontal status.(p<0.001).

HMM 및 보정 알고리즘을 이용한 자동 음성 분할 시스템

김무중,권철홍 한국음성과학회 2002 음성과학 Vol.9 No.4

In this paper we propose an automatic segmentation system that outputs the time alignmetn information of phoneme boundary using Viterbi search with HMM (Hidden Markov Model) and corrects these results by an UVS (unvoiced/voiced/silence) classifica-tion algorithm. We selecte a set of 39 monophones and a set of 647 extended phones of HMM models. For the UVS classification we use the feature parameters such as ZCR (Zero Crossing Rate), log energy, spectral distribution. The result of forced alignment using the etended phone set is 11% better than that of the monophone set. The UVS classification algorithm shows high performance to correct the segmentation results.

서순응형 치근막 일차구심성 신경섬유 종말부의 Subnucleus oralis에서의 시냅스 양상에 관한 전자현미경적 연구

김무중,배용철,김진수,Kim, Moo-Jung,Bae, Yong-Chul,Kim, Chin-Soo 대한악안면성형재건외과학회 1993 Maxillofacial Plastic Reconstructive Surgery Vol.15 No.4

단일축삭내 HRP 주입기법에 의해 서순응형 치근막 기계적자극수용기에서 오는 일차구심성 신경섬유증 무수축삭에 의해 연결되어 있는 종말지의 시냅양상 및 미세구조에 대한 연구결과는 다음과 같았다. 1. 표식된 stem collateral은 첫 bouton을 형성할 때까지는 수질을 함유하고 있었으며, 그 직경은 약 $0.81-1.38{\mu}m$이었고, 각 terminal bouton은 특징적으로 모두가 무수축삭에 의해 연결되어 있었다. 2. 대부분의 표식 bouton은 dome형태를 나타내었으며, 때때로 길쭉한 모양 혹은 둥근모양의 bouton도 다소 관찰되었으나 scalloped 형태 혹은 glomerulus 형태의 bouton은 전혀 나타나지 않았으며 각 표식 bouton은 균일한 형태 및 크기(직경 $47.60{\pm}3.58{\mu}m$)를 가진 밝은 타원 및 원형의 소포들을 함유하고 있었다. 3. 표식 bouton은 평균직경 $1.15{\pm}0.24{\mu}m$로서 비교적 작았고 평균 $1.11{\pm}0.31$개의 다른 neuronal propile과 시냅스를 이루었는데 그중 단 1개의 neuronal propile과 시냅스를 이루는 것이 89.4%, 2개의 neuronal propile과 시냅스를 이루는 것이 10.6%로서 대단히 단순한 형태의 시냅스를 이루는 것이 특징적으로 나타났으며, 그중 대부분(80.03%)이 dendritic shaft 혹은 spine과만 시냅스를 이루었으며 p-ending과 시냅스를 이루는 것은 6.1%였고 synaptic triad는 전혀 관찰되지 않았다. It was revealed that the morphology and projection pattern of terminal arbors from single primary afferent are different among distinct fiber types, functional types and the different subdivision of trigeminal sensory nucleus complex(TSNC). But it was not identified the ultrastructural morphology and synaptic connections of terminal arbors from each primary afferent within TSNC. So we employed the intra-axonal horseradish peroxidase(HRP) injection technique to define the terminal arbors of primary afferent fiber from slowly adapting mechanoreceptors in the periodontal ligament of the cat, and examined 66 labeled terminal arbors within the rostrodorsomedial part(Vo.r) of the trigeminal nucleus oralis, electromicroscopically with 90nm serial sections. All the boutons labelled with HRP contained clear, spherical and uniform sized synaptic vesicles(diameter : $47.66{\pm}3.58nm$ ). Most of the labelled boutons were boutons en passant type and they were connected by unmyelinated axonal strand. In which neurofilament and microtubule was not developed but occasionally contained synaptic vesicle in contrast to the myelinated axon. The size of the labelled bouton was relatively small(long diameter : $1.46{\pm}0.24{\mu}m$, short diameter $0.85{\pm}0.26{\mu}m$, average diameter $1.15{\pm}0.24{\mu}m$) and the shape of which varied from dome to elongated shape, but scalloped glomerulus shape was not developed. Each primary ending in Vo.r made synapse with one or two neuronal propiles(average : $1.11{\pm}0.31$), of which, 89.4% of labelled boutons made synapse with only one neuronal pro pile, the remainder, 10.6% of labelled boutons, made synapse with two neuronal propile. So characteristically they made very simple synapse. Most of labelled boutons(80.03%) made asymmetrical synapse only with dendritic shaft or spine, and 6.1% of labelled boutons received symmetrical synapse from pleomorphic vesicle containing axonal ending(p-ending). So presynaptic inhibiton was relatively scarce. Synaptic triad, in which a p-ending is presynaptic both pre-and post-synaptic element of the axo-dendritic contact from the labelled primary ending was not observed.

“남양주 금남리 유적”에 대한 토론문

김무중 중부고고학회 2020 중부고고학회 학술대회논문집 Vol.2020 No.2

해삼 열수 추출물을 함유한 유청 단백질-펙틴 콤플렉스 산성 클라우드 에멀션 모델 음료의 이화학적 특성

김무중,피라퐁 냠니콤,김해,김종헌,임동현,정동화 한국산업식품공학회 2017 학술대회 및 심포지엄 Vol.2017 No.04

단백질과 사포닌 함량이 높은 해삼 열수 추출물을 첨가한 산성 음료는 응집, 침전 및 해삼 특유의 이취로 인하여 음료 제조에 많은 제한점이 있다. 단백질 클라우드 에멀션 음료 시스템은 고단백질 기능성 음료 제조 및 이취를 차폐할 수 있는 특성이 있고, 증점제로 사용되는 펙틴은 산성 조건에서 단백질과 콤플렉스를 형성함으로써 응집과 침전을 억제할 수 있다. 따라서 본 연구에서는 클라우드 에멀션 시스템에 해삼 열수 추출물 분말을 첨가하여 모델 음료를 제조하였으며 펙틴의 함량을 조절하면서 pH와 열처리 조건에 따른 모델 음료의 이화학적 특성을 관찰하였다. 해삼 열수 추출물 분말은 고온(121oC), 고압(15 psi) 조건에서 추출한 후 분무 건조하여 확보하였으며 단백질, 다당, 회분, 수분함량은 각각 43.46, 44.97, 5.38, 4.19%이었다. 모델 음료는 올리브유(0.1%), 해삼 열수 추출물 분말(2%), 유청 단백질(2%), 펙틴(0.01-2%)을 혼합한 후 고압 균질기(4500 psi)를 이용하여 균질화하였다. 제조한 클라우드 에멀션 모델 음료는 30oC와 85oC에서 각각 2 또는 30 min 동안 열처리를 하였다. 펙틴, 유청 단백질의 ξ-potential과 입자크기는 pH를 7에서 3으로 감소시킴에 따라서 증가하였다. 펙틴을 0.01%에서 2% 범위로 첨가한 모델 음료의 ξ-potential과 입자크기는 펙틴함량의 증가에 따라서 증가하였다. 저농도의 펙틴(0.01-0.1%)을 첨가한 경우에는 응집과 상분리 현상이 발생하지 않았다. 그러나 고농도 펙틴(0.5-2.0%)의 첨가, pH를 7에서 3으로 감소 및 85oC에서 30 min 동안의 열처리 조건에서는 complex coacervation에 의한 응집과 상분리 현상이 발생하였다.