The Implications of X-ray Use in Chuna Manual Therapy from the Viewpoint of Korean Medicine Doctors

김태규,기유미,양규진,이기범,Hooin Jo,최종호,Yoon Jae Lee,이상훈,하인혁 대한침구의학회 2018 대한침구의학회지 Vol.35 No.3

Background: The purpose of this survey study was to understand how utilization of X-rays as an adjunct to Chuna manual therapy (CT) supports treatment, as assessed by Korean medicine doctors (KMDs). Methods: A survey was emailed to all 18,289 members of the Association of Korean Oriental Medicine(AKOM)to determine the implications of X-ray use in CT. Surveys were collected from September 22, 2017 to October 15, 2017. Results: Of the 18,289 KMDs 562 completed the survey. The implications of a radiological diagnosis (X-ray) with CT was assessed using 5 items in a questionnaire: time to diagnosis, accuracy of treatment, patient comprehension and satisfaction, CT effect, and safety of CT. Survey participants identified improvement in patient comprehension and satisfaction as the most important factor for X-ray use with CT, followed by increased safety of CT. From the determinant factors for selection of CT intensity and specific techniques, severity of clinical symptoms was shown to be the most influential factor. Degenerative changes of the spine and degree of spinal malposition were also reported to be highly influential. Conclusion: The KMDs’ that participated in this study indicated that utilization of X-rays in conjunction with CT administration improved patient comprehension and satisfaction, and CT safety. Installation of radiological equipment in Korean medicine clinics where CT is provided may increase safety and patients’ satisfaction.

FDM 에 의한 응고해석시 계산시간 단축을 위한 음적해법의 적용과 잠열처리방법

김태규,최정길,홍준표,이진형 ( Tae Gyu Kim,Jung Kil Choi,Jun Pyo Hong,Zin Hyoung Lee ) 한국주조공학회 1993 한국주조공학회지 Vol.13 No.4

N/A An implicit finite difference formulation with three methods of latent heat treatment, such as equivalent specific heat method, temperature recovery method and enthalpy method, was applied to solidification analysis. The Neumann problem was solved to compare the numerical results with the exact solution. The implicit solutions with the equivalent specific heat method and the temperature recovery method were comparatively consistent with the Neumann exact solution for smaller time steps, but its error increased with increasing time step, especially in predicting the solidification beginning time. Although the computing time to solve energy equation using temperature recovery method was shorter than using enthalpy method, the method of releasing latent heat is not realistic and causes error. The implicit formulation of phase change problem requires enthalpy method to treat the release of latent heat reasonably. We have modified the enthalpy formulation in such a way that the enthalpy gradient term is not needed, and as a result of this modification, the computation stability and the computing time were improved.

Open-Top chamber 내(內)에서 오존에 노출(露出)시킨 현사시 5개(個) 클론의 생장량(生長量)과 오존에 대(對)한 민감성(敏感性)과의 관계(關係)

김태규,이경준,김군보,구영본,Kim, Tae Kyu,Lee, Kyung Joon,Kim, Goon Bo,Koo, Yong Bon 한국산림과학회 2000 한국산림과학회지 Vol.89 No.1

본 연구는 수목의 오존에 대한 피해정도가 수목 고유의 생장속도와 관련되어 있는지를 검증하기 위하여 실시하였다. 생장이 우수한 현사시(Populus alba ${\times}$ P. glandulosa) 4호 품종 중에서 두 개 클론(72-30, 72-16)과 생장이 비교적 저조한 현사시 2호 품종 중에서 3개 클론(72-28, 72-27, 72-19)을 본 실험에서 비교하였다. 위의 5개 클론의 삽수를 4월초 $2{\ell}$ 화분에 삽목하여 증식시킨 후, 8월 하순에 야외에서 3개의 open top chamber(직경 2.5m, 높이 2.0m) 내에서 30일 동안 70ppb와 130ppb의 오존에 1일 5시간씩 노출하였다. 대조구는 활성탄으로 여과하여 오존의 농도가 30ppb이하로 유지되도록 하였으며, 각 클론별, 처리별로 20개의 화분을 반복으로 사용하였다. 대조구에서 두 품종간의 생장비교는 현사시 4호가 현사시 2호보다 잎 건중량에서 73%, 뿌리 건중량에서 64%, 총건중량에서 38% 더 우수하여 현사시 4호의 생장속도가 2호보다 우수함을 입증하였다. 오존에 의한 가시적 피해는 70ppb 오존처리에서는 나타나지 않았으며, 130ppb 처리에서 현사시 4호에서만 관찰되었으며, 성숙잎에서 전형적인 작은 갈색 반점들로 나타났으며, 성숙잎의 조기낙엽을 가져왔다. 70과 130ppb 오존처리는 5개 모든 클론의 수고생장, 잎과 뿌리의 건중량과 총건중량을 감소시켰는데, 이 중에서 뿌리생장을 가장 크게 감소시켰다. 70ppb 오존에서 뿌리의 감소량은 현사시 4호가 39.7%이고, 현사시 2호는 13.8%이었다. 130ppb 오존에서도 현사시 4호의 뿌리감소량은 47.4%이고, 현사시 2호는 34.9%이었다. 이로 인하여 shoot/root율은 130ppb에서 현사시 4호는 63.4% 증가한 반면, 현사시 2호는 22.1% 증가에 그쳤다. 오존에 의한 가공전도도와 순광합성량의 변화에서도 현사시 4호가 현사시 2호보다 더 많이 감소하였다. 특히 130ppb 오존에서 현사시 4호의 순광합성량은 69.5% 감소한 반면에, 현사시 2호는 31.5% 감소하였다. 따라서 위의 여러 가지 생리적 반응을 근거로 하여 생장이 우수한 현사시 4호가 생장이 상대적으로 적은 현사시 2호보다 오존에 더 민감하다고 판단할 수 있으며, 수목의 오존에 대한 피해정도는 수목 고유의 생장속도가 관련되어 있다고 결론 짓는다. This study was conducted to test a hypothesis that sensitivity of trees to ozone exposure was related to their growth rates. Two cultivars of Populus alba ${\times}$ P. glandulosa with different genetic growth potential were used for the comparison. Two clones(72-30, 72-16) of cultivar No. 4 with fast growing potential and three clones(71-28, 72-27, 72-19) of cultivar No. 2 with slow growing potential were propagated in early spring by cutting in $2-{\ell}$ plastic pots. They were grown outdoor for 5 months and exposed in late August for 30 days to 70 and 130ppb ozone in a open-top chambers(2.5m in diameter and 2m in height). Ozone concentration in a control chamber was maintained below 30ppb by filtering with activated charcoal. Each treatment was replicated twenty times. In a control chamber, cultivar No. 4 grew 73%, 64%, and 38% faster than cultivar No. 2 in leaf weight, root weight, and total dry weight, respectively. Visible injury was observed only in cultivar No. 4 in 130ppb treatment. Ozone treatment at both 70 and 130ppb decreased height growth, dry weight of leaf, root, and entire plants in all five clones. Particularly root growth was reduced by 39.7% and 13.8% in cultivar No. 4 and No. 2, respectively, in 70ppb treatment. Consequently, shoot/root ratio of cultivar No.4 was increased by 63.4%, while that of cultivar No.2 was increased by 22.1%. Stomatal conductance decreased more in cultivar No.4 than in cultivar No.2. Net photosynthesis of cultivar No.4 at 130ppb ozone decreased by 69.5%, while that of cultivar No.2 decreased by 31.5%. Above mentioned physiological responses of two cultivars to ozone strongly suggested that fast growing cultivar No.4 was more sensitive to ozone than slow growing cultivar No.2. It was concluded that sensitivity of trees to ozone exposure was closely related to their growth rates.

CORRELATION BETWEEN THE TENSILE STRENGTH AND CORROSION BEHAVIOR OF HEAT TREATED ZR-1.0NB ALLOY

김태규,PYUNG SIK CHOI,SUNG KI YANG,CHONG TAK LEE,DONG SEONG SOHN 한국원자력학회 2008 Nuclear Engineering and Technology Vol.40 No.6

The correlation between the tensile strength and corrosion behavior of Zr-1.0wt%Nb alloy heat treated at 480°C for up to 32 hours was evaluated. The tensile strength at 400°C was continuously reduced with an increasing heat treatment time, mainly due to a grain growth and a decreased area fraction of the precipitates. However, the corrosion resistance in an aqueous ammonia solution at 360°C was enhanced, mainly due to the formation of ß-Nb precipitates. It is thus concluded that a longer heat treatment time provides a better corrosion resistance while degrading the tensile strength.

MICROSTRUCTURAL OBSERVATION AND TENSILE ISOTROPY OF AN AUSTENITIC ODS STEEL

김태규,JINSUNG JANG,SUNG HO KIM,CHAN BOCK LEE,Dohee Hahn,CHANG SOO BAE,DO HYANG KIM 한국원자력학회 2008 Nuclear Engineering and Technology Vol.40 No.4

Based on a composition of 99.4 wt% AISI 316L stainless steel, 0.3 wt% Ti and 0.3 wt% Y₂O₃, an austenitic ODS steel was fabricated by a process of mechanical alloying, hot isostatic pressing and rolling. Fine oxide particles were observed in the matrix, and their chemical formulations were determined to be Y₂Si₂O7 and TiO. Heat treatment of the cold-rolled sample at 1200°C induced an isotropic tensile behavior at room temperature and at 700°C This result would be mainly attributed to the equiaxed grains that form as a result of the heat treatment for recrystallization.

커먼레일 디젤엔진의 연료분사계 최적화 연구

김태규(Tae-Kyu Kim),이웅건(Woong-Gun Lee),강승천(Sung-Chon Kang),이동인(Dong-In Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

The major purpose of this study is to find optimized Injector nozzle's hole-number, hole-hyd.flow and injection pressure, injection-timing in order to achieve their NOx reduction targets while minimizing smoke and fuel economy penalty. The tests were performed on a 6 ℓ Common Rail Diesel Engine to use commercial-vehicle, excavator, wheel-loader, fork-lift truck. In this study, two case of injector nozzle's hole-number(#7, #8) and three case of injector nozzle's hole-hyd.flow(Standard, +7%, -7%) were tested for their relation of NOx, BSFC, smoke by changing injection-pressure, injection-timing. From the test, we find that injector nozzle's hole-number, #8 and hole-hyd.flow, Standard are optimized at this engine. And we find engine performance and emission trend by changing injection-pressure and injection-timing.

Two-Step 구조의 인공신경망 기반 Hybrid AC/DC Microgrid 운영 기법

김태규(Tae-Gyu Kim),이훈(Hoon Lee),안창균(Chang-Gyun An),이윤성(Yoon-Seong Lee),강경민(Kyung-Min Kang),이준신(Junsin Yi),원충연(Chung-Yuen Won) 한국조명·전기설비학회 2021 조명·전기설비학회논문지 Vol.35 No.3

This paper proposes an artificial neural network(ANN) based energy management system(EMS) for hybrid AC/DC microgrid with renewable energy source and distributed generation(DG). The operation of microgrid is divided into grid-connected mode and stand-alone mode according to whether or not the power converters are connected to the main AC grid. In grid-connected mode, the operation of energy storage system(ESS) is usually to maintain an appropriate value of state of charge(SOC). On the other hand, in stand-alone mode, the regenerative operation to the main AC grid is impossible, so additional control of ESS is required. However, in the case of small-scale distribution networks, data on power generation sources and load demands have non-linear characteristics, which makes it difficult to operate the EMS. Therefore, in this paper, ANN based EMS was applied to appropriately control the surplus and shortage of ESS power. The proposed ANN was constructed with a two-step structure to achieve high accuracy even with less repetitive learning. To implement the proposed method, a laboratory-scale interlinking converter based hybrid microgrid was constructed and its validity was verified through the experimental results.

상수처리 : 한강수계 상수원에서의 Chloral Hydrate 생성특성

김태규 ( Tae Gyu Kim ),이태용 ( Tae Young Lee ),이경희 ( Kyeng Hlee Lee ),한창환 ( Chang Hwan Haan ) 대한상하수도학회 2007 공동추계 학술발표회 논문집 Vol.2007 No.-

승용차의 고급감 음질에 대한 연구

김태규(Kim, Tae-Gyu),김성종(Kim, Sung-Jong),이상권(Lee, Sang-Kwon),박동철(Park, Dong-Chul),이경훈(Lee, Kyung-Hoon) 한국소음진동공학회 2009 한국소음진동공학회 논문집 Vol.19 No.11

Future luxury car must satisfy the improvement of the luxury sound quality on the vehicle interior noise. Previously, we have analyzed vehicle interior noise by dB(A) based analysis. However, dB(A) has very little to do with the psychological satisfaction of the consumers. People want a sound that is characteristic and refined not a sound that is quiet and common. Subjective test were conducted to determine the relationship between subject' s responses and calculated metric values. People choose the most luxury sound among the various vehicle interior noise. And the purpose of this study is that we understand the metrics which constitute the luxury vehicle sound. We have analyzed vehicle interior noise by using the statistical analysis such as multiple regression method and correlation method. And we organized the index of the luxury sound quality.

상수처리 : 한강수계 상수원에서의 Chloral Hydrate 생성특성

김태규 ( Tae Gyu Kim ),이태용 ( Tae Young Lee ),이경희 ( Kyeng Hlee Lee ),한창환 ( Chang Hwan Haan ) 한국물환경학회 ( 구 한국수질보전학회 ) 2007 공동 추계학술발표회 Vol.2007 No.-