타워크레인의 횡지지 최적설계 알고리즘 개발

이현민,호종관,김선국,Lee, Hyun-Min,Ho, Jong-Kwan,Kim, Sun-Kuk 한국건설관리학회 2010 한국건설관리학회 논문집 Vol.11 No.1

예측 불가능한 자연 재해를 포함하여 현장관리자의 장비 설치 및 운영 시의 경험부족은 타워크레인과 같은 대형양중장비에 심각한 사고의 원인으로 작용한다. 국내에서는 2003년 태풍 "매미"의 영향으로 불안정한 지지구조를 가진 약 50여대의 타워크레인이 전복되는 사고가 발생하였으며, 아직까지 많은 현장관리자는 대형양중장비에 대한 설치 및 운영에 대한 이해가 부족하여 예산을 실행하는 데 비효율적인 모습을 보이고 있다. 또한, 최근 들어 초고층 건설 프로젝트가 급격하게 증가함으로써 타워크레인의 사용빈도 또한 증가하고 있으므로, 이로 인한 타워크레인 기초판의 지지 안정성뿐만 아니라 횡지지 안정성을 검토하는 것이 요구되고 있다. 본 연구의 목적은 타워크레인의 횡지지 최적설계 알고리즘을 개발하는 것으로, 타워크레인 횡지지의 구조적인 안정성을 확보하고 비용이 최소화되는 부재조합을 선택하여 현장에 적용 가능하게 한다. 이는 향후 현장관리자의 타워크레인 설치 및 운영 업무를 효율적으로 증진시킬 것이다. Poor expertise in equipment operation and installation, coupled with unpredictable natural disaster, usually directly leads to disastrous accidents of large lifting equipment such as tower cranes. For example, 52 tower cranes fell down due to the unstable support in Korea at the attack of Typhoon "Maemi" in 2003, which damaged property and caused loss of life. In high-rise construction projects, top-slewing or luffing-jib tower cranes needs checking the stability of lateral-support in addition to the bottom support such as the foundation. In this study, the optimization algorithm for lateral-support of tower cranes is conducted, which is expected to enhance the structural stability of tower cranes and save the cost in conflict with the safety.

만 $9{\sim}12$세 남자 아동의 머리와 얼굴 부위 측정 및 유형 분류

이현민,최혜선,김선희,Lee Hyun-Min,Choi Hei-Sun,Kim Son-Hee 복식문화학회 2004 服飾文化硏究 Vol.12 No.6

This study was aimed to provide the fundamental and various measurement data of the head and face for male children. Two hundred forty one male children, aged nine to twelve years, participated for this study. The 31 regions on the head and face of the subjects were directly measured by the expert experimenters. Through factor analysis, the six factors were extracted upon factor scores and those factors comprised $67.47\%$ for the total variances. The first factor was described the general height elements for the mouth and the environs of the mouth. The second factor was described the general height around the nose, forehead and eyes. The third factor was described the height of the ear environs. The forth factor contained the length around the sinciput to the occiput, the head thick and the head circumstance. The fifth factor was described the general width of the outer head and the corner of the eyes. The last factor contained the depth of the mouth and nose. Four clusters as their head and face shape were categorized using six factor scores by cluster analysis. Type 1 was characterized by the shortest head and face width, surface length and girth, and the shorter length of head, but the highest position of chin, philtrum, upper lip. Type 2 was characterized by the shortest head and face length and thickness, and the lowest position of the forehead, eye, nose, mouth, ear environs, but that had wider width of head and face. Type 3 was characterized by the longest and the widest head and face type, and the highest position of the mouth. Type 4 was characterized by longer length of head and face, and the widest head girth and largest head thickness, and the highest position of the forehead, eye, nose environs. And this type had the widest width of nose and mouth, and the longest head surface length.

성문암으로 오인되기 쉬운 원발성 후두 아스페르길루스증 1예

이현민,정광태,김정석,한주희,Lee, Hyun Min,Jung, Kwang Tae,Kim, Jung Suk,Han, Ju Hee 대한후두음성언어의학회 2013 대한후두음성언어의학회지 Vol.24 No.2

Infection by aspergillus, which is a kind of mold, or a filamentous fungus, occurs rarely in larynx. Furthermore, primary laryngeal aspergillosis without any other airway tract extension and without any generalized immune deficit is extremely rare. We present a case of primary aspergillosis on vocal cord in a 72-year-old male who had no history of immune deficiency, voice abuse or steroid use.

복합명사의 역방향 분해 알고리즘

이현민,박혁로,Lee, Hyeon-Min,Park, Hyeok-Ro 한국정보처리학회 2001 정보처리학회논문지B Vol.8 No.4

본 논문에서는 단위명사 사전과 접사 사전을 이용하여 한국어 복합명사를 분해하는 새로운 알고리즘을 제안한다. 한국어 복합명사는 그 구조에 있어서 중심어가 뒤에 나타난다는 점에 착안하여 본 논문에서 제안한 분해 알고리즘은 복합명사를 끝음절에서 첫음절 방향 즉 역방향으로 분해를 시도한다. ETRI의 태깅된 코퍼스로부터 추출한 복합명사 3,230개에 대해 실험한 결과 약 96.6%의 분해 정확도를 얻었다. 미등록어를 포함한 복합명사의 경우는 77.5%의 분해 정확도를 나타냈다. 실험에 사용된 데이터중의 미등록어는 대부분 접사를 포함한 파행어로서, 제안한 복합명사 분해 알고리즘은 접사가 부착된 미등록어 분석에 있어서 보다 높은 분석 정확도를 나타냄을 알 수 있었다.

TFT-LCDs에 적용 가능한 Cu-Ag 박막에 대한 Mo 기판 위에서의 특성조사

이현민,이재갑,Lee, H.M.,Lee, J.G. 한국재료학회 2006 한국재료학회지 Vol.16 No.4

We have investigated the effect of silver added to Cu films on the microstructure evolution, resistivity, surface morphology, stress relaxation temperature, and adhesion properties of Cu(Ag) alloy thin films deposited on Mo glue layer upon annealing. In addition, pure Cu films deposited on Mo has been annealed and compared. The results show that the silver in Cu(Ag) thin films control the grain growth through the coarsening of its precipitates upon annealing at $300^{\circ}C{\sim}600^{\circ}C$ and the grain growth of Cu reveals the activation energy of 0.22 eV, approximately one third of activation energy for diffusion of Ag dopant along the grain boundaries in Cu matrix (0.75 eV). This indicates that the grain growth can be controlled by Ag diffusion along the grain boundaries. In addition, the grain growth can be a major contributor to the decreased resistivity of Cu(Ag) alloy thin films at the temperature of $300^{\circ}C{\sim}500^{\circ}C$, and decreases the resistivity of Cu(Ag) thin films to $1.96{\mu}{\Omega}-cm$ after annealing at $600^{\circ}C$. Furthermore, the addition of Ag increases the stress relaxation temperature of Cu(Ag) thin films, and thus leading to the enhanced resistance to the void formation, which starts at $300^{\circ}C$ in the pure Cu thin films. Moreover, Cu(Ag) thin films shows the increased adhesion properties, possibly resulting from the Ag segregating to the interface. Consequently, the Cu(Ag) thin films can be used as a metallization of advanced TFT-LCDs.

전침자극과 경피신경전기자극이 흰쥐 좌골신경 압좌손상 후 척수내 GAP-43 발현에 미치는 영향

이현민,박은세,김민희,김석범,김동현,김진상,Lee, Hyun-Min,Park, Eun-Se,Kim, Min-Hee,Kim, Souk-Boum,Kim, Dong-Hyun,Kim, Jin-Sang 대한물리치료학회 2006 대한물리치료학회지 Vol.18 No.1

Purpose: The purpose of this study was to identify the effect of electroacupuncture(EA) and transcutaneous electric nerve stimulation(TENS) after sciatic nerve crush injury in rats. Methods: The EA for experimental group I (Exp I, n=15) and TENS for experimental group II (Exp II, n=15) was applied from post-injury day(PD) 1 to PD 14 after sciatic nerve injury using low frequency stimulator that gave electrical stimulation(15min/60Hz). In order observe the effect of EA and TENS, this study examined GAP-43 expression in rat lumbar spinal cord at the PD 1, PD 7 and PD 14. In addition, the stride length(SL) and toe out angle(TOA) were measured at the PD 7 and PD 4. Results; Exp I and Exp II had higher GAP-43 immunoreactivity than control group(PD 1, 7, 14). The SL of Exp I and Exp II were significantly higher than control group(PD 7, 14). The TOA of Exp I and Exp II were significantly lower than control group(PD 7, 14). Conclusion: EA and TENS application increased motor nerve recovery and expression of GAP-43 immunoreactivity after sciatic nerve crush injury. Therefore effect of TENS and EA had similar effect on nerve regeneration and functional recovery.

양독백호탕(陽毒白虎湯)으로 치료한 만성 부비동염 치험 1례

이현민,박성하,Lee, Hyeon-Min,Park, Seong-Ha 사상체질의학회 2007 사상체질의학회지 Vol.19 No.3

1. Objectives This study evaluates the effect of oriental medical treatment on a chronic sinusitis patient. 2. Methods The patient was teated with acupuncture, nasal cavity irrigation, and Yangdokbackho-tang(陽毒白虎湯). Previous western medical methods were excluded in order to provide therapeutic methods different from pre-existing ones because we needed different, long-term treatment plan from previous treatment. We applied acupuncture 15 times during treatment period and instructed the patient to carry out nasal cavity irrigation at home. 3. Results & Conclusions Combined application of oriental treatment including administration of Yangdokbackho-tang and nasal irrigation showed remarkable clinical effects on symptom, physical examination and radiological finding.

Disciplinary Health Education : 정신지체아의 신체조정력 향상도에 관한 연구

이현민,홍양자 ( Hyun Min Lee,Yang Ja Hong ) 한국체육학회 1994 국제스포츠 학술대회 Vol.1994 No.-

PES 기판 위에 증착된 Mg_0.3Zn_0.7O 박막의 산소압에 따른 구조 및 광학적 특성

이현민,김상현,장낙원,김홍승,Lee, Hyun-Min,Kim, Sang-Hyun,Jang, Nakwon,Kim, Hong-Seung 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.11

MgZnO has attracted a lot of attention for flexible device. In the flexible substrate, the crystal structure of the thin films as well as the surface morphology is not good. Therefore, in this study, we studied on the effects of the oxygen pressure on the structure and crystallinity of $Mg_{0.3}Zn_{0.7}O$ thin films deposited on PES substrate by using pulsed laser deposition. We used X-ray diffraction and atomic force microscopy in order to observe the structural characteristics of $Mg_{0.3}Zn_{0.7}O$ thin films. The crystallinity of $Mg_{0.3}Zn_{0.7}O$ thin films with increasing temperature was improved, Grain size and RMS of the films were increased. UV-visible spectrophotometer was used to get the band gap energy and transmittance. $Mg_{0.3}Zn_{0.7}O$ thin films showed high transmittance over 90% in the visible region. As increased working pressure from 30 mTorr to 200 mTorr, the bandgap energy of $Mg_{0.3}Zn_{0.7}O$ thin film were decreased from 3.59 eV to 3.50 eV.

태음인(太陰人) 당뇨병(糖尿病) 환자에게 버섯 요구르트를 투여한 임상보고

이현민,조훈석,전수형,김종원,Lee, Hynn-Min,Jo, Hoon-Seuk,Jeun, Su-Hyung,Kim, Jong-Won 사상체질의학회 2004 사상체질의학회지 Vol.16 No.2

1. Objectives The purpose of this study was to investigate the effects of administration of Mushroom yogurt on the Diabetes Millitus paitients. 2. Methods We collected 24 Taeumin patients with glycosurea in Dongeui Oriental Hospital, and then adminisrtation of Mushroom yogurt, medical examinations and questionnaire test of symptons for 13 weeks. 3. Results (1) At the symptoms change : Subjects of glycosurea clincal symptoms questionnarie which showed improvement above 50 percents were 'I have to urinate frequently' and 'I feel severe thirst'. (n=22) (2) Level of FBS significantly decreased at the inspection of 5 weeks 9 weeks 11 weeks afterwards(P-value=0.008, P-value=0.002, P-value=0.022), Level of HbA1c significantly decreased at the inspection of 13weeks afterwards(P-value=0.000).(n= 24) 4. Conclusions We have concluded that these effects must be useful in the clincal study of the Sasang constitutional treatment on Diabetes Mellitus Patients.