성당을 오고 싶도록 만들어야 한다 : 대전교구 천안 원성동본당 주임 김재덕 신부

김재덕,유태근,최주성(사진) 미래사목연구소 2023 사목정보 Vol.16 No.3

한의학 기초 고론

김재덕,Kim, Jae-Deok 대한한약협회 2000 大韓漢藥 Vol.4 No.-

Digora$\textregistered$에서 정량영상의 특성에 대한 평가

김재덕,Kim Jae-Duk 대한영상치의학회 1999 Imaging Science in Dentistry Vol.29 No.2

Purpose: To clarify the usefulness and the limitation of Digora system/sup (R)/ by evaluating the physical characteristics as the quantitative image on Image Plate(Ip). Materials and Methods: Radiograms were taken by Heliodent MD(Siemens Co.. Germany) with the image plate for adult. Cu-step wedge as reference material. and three pieces of dry mandibular bone. Image analysis was performed by single color enhancement. density measurement with histogram. The relationship between the exposure conditions and the distribution of the pixel values of the image. the variation of pixel values of each step of Cu-step wedge at two different area and Cu-equivalent value of three pieces of dry mandibular bone measure by the conversion equation. Results: There was no linear relationship between the exposure condition and the average pixel value of the image. of which the distribution was not even. The pixel value differences between the center portion and the periphery were ranged from 60 to 70 in vertical plane and from 15 to 26 in horizontal plane. Two plot profile formed at two different areas of the Cu-step wedge were different. The measured Cu-equivalent values showed the discrepancy among the times of measurement. Conclusion: As above results. Image Plate(Ip) of Digora system/sup (R)/ showed the limitation as the quantitative image. The physical property of IP was expected to need to be compensated for the quantitative evaluation of the bone or others

Cloning, Expression, and Characterization of a Thermotolerant β-agarase from Simiduia sp. SH-4

김재덕,이동근,이상현 한국생물공학회 2018 Biotechnology and Bioprocess Engineering Vol.23 No.5

The gene coding for a thermotolerant β-agarase from an isolated Simiduia sp. SH-4 was cloned, recombinantly expressed, and characterized after purification. This gene was sequenced after cassette mediated polymerase chain reaction and composed of an open reading frame of 1,809 base pairs, encoding a protein of 66.2 kilodaltons comprising of 602 amino acid residues. The amino acids sequence showed 74% homology with β-agarase of Simiduia agarivorans. A new β-agarase gene corresponding to mature protein of 577 amino acids was recombinantly expressed and purified by chitin bead column to homogeneity. The maximal specific activity was 505.07 U/mg at 50oC in Tris/HCl (pH 6.0) buffer. Recombinant β-agarase hydrolyzed agar into neoagarotetraose (57%) and neoagarohexaose (43%). It generated products from melted and non-melted powder agar and agarose at 30-50oC, meaning cheap agar materials could be used with energy- and costsavings. Thus, recombinant β-agarase could be used for industrial production of neoagarotetraose and neoagarohexaose.

中国大数据产业的成果与启示

金在德 성균관대학교 성균중국연구소 2018 성균중국관찰 Vol.22 No.-

임플란트 치료 전 CBCT 영상분석 세 증례

김재덕,김광원,임성훈 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.37 No.3

The role of radiographic imaging in determining the size, numbers and the position of implants is very important. To perform the implant procedure, the dentist needs to evaluate the bone pathology and bone density, and to know the precise height, width, and contour of the alveolar process, as well as its relationship to the maxillary sinus and mandibular canal. The author analyzed 3 implant cases for treatment planning with the cone beam CT. All axial, panoramic, serial and buccolingual-sectioned images of 3 cases with stent including vertical marker were taken by using Mercuray (Hitachi, Japan). When the curved line drawn intentionally did not include dot image of a vertical marker on the axial image of CBCT, the image of the vertical marker was deformed on its buccolingually sectioned image. There was wide discrepancy in inclination between the alveolar bone and tooth on buccolingually sectioned image.

유전알고리즘을 이용한 수직벽면 이동 로봇의 정·동적 최적설계

김재덕,노민석,정성현,홍대선 한국공작기계학회 2009 한국공작기계학회 춘계학술대회논문집 Vol.2009 No.-

Most shipbuilding works are manually carried out by workers, and safety consideration is an important issue especially in elevated-spot works such as painting and cleaning of outer wall of a ship. To cope with the circumstance, shipbuilding makers start to introduce wall-climbing robots for carrying out such tasks. In designing such a wall-climbing robot, it is essential to minimize its own weight to improve the performance such as moving speed and power saving. For such purpose, this paper proposes a method of optimal design for a wall-climbing robot body using genetic algorithm through static and dynamic analysis. Specifically, the thickness of the robot base is minimized to reduce the weight while maintaining the allowable strength and avoiding resonance frequencies. The proposed method is applied to the design of a wall-climbing robot, and the simulation results show that the method can be successfully adopted to the early stage of design.

不動産企業과 리더십의 딜레마

金在德 건국대학교 행정대학원 1993 建國大學校 行政大學院 硏究論叢 Vol.21 No.-

Renewal and renewal reward theories for $T$-independent fuzzy random variables

김재덕,홍덕헌 한국전산응용수학회 2015 Journal of applied mathematics & informatics Vol.33 No.5

Recently, Wang et al. [Computers and Mathematics with Applications 57 (2009) 1232--1248.] and Wang and Watada [Information Sciences 179 (2009) 4057--4069.] studied the renewal process and renewal reward process with fuzzy random inter-arrival times and rewards under the $T$-independence associated with any continuous Archimedean t-norm. But, their main results do not cover the classical theory of the random elementary renewal theorem and random renewal reward theorem when fuzzy random variables degenerate to random variables, and some given assumptions relate to the membership function of the fuzzy variable and the Archimedean t-norm of the results are restrictive. This paper improves the results of Wang and Watada and Wang et al. from a mathematical perspective. We release some assumptions of the results of Wang and Watada and Wang et al. and completely generalize the classical stochastic renewal theorem and renewal rewards theorem.

디지털구내방사선사진의 구리당량화상에 대한 평가

김재덕 朝鮮大學校 口腔生物學硏究所 1998 Oral Biology Research (Oral Biol Res) Vol.22 No.2

Geometically standardized dental radiographs were taken. We prepared Digital Cu-Equivalent Image Analyzing System for quantitative assessment of mandible bone. Images of radographs were digitized by means of Quick scanner and personal Mcquintosh computer. NIH image a software was used for analyzing images. A stepwedge composed of 10 steps of 0.1㎜ copper foil in thickness was used for reference material. This study evaluated the effects of step numbers of copper wedge adopted for calculating equation, kVp and exposure time on the coefficient of determination(r^2)of the equation for conversion to Cu-equivalent image and the coefficient of variation and Cu-Eq value(㎜) measured at each copper step and alveolar bone of mandible. The results were as follows: 1. The coefficients of determination(r^2) of 10 conversion equations ranges from 0.9996 to 0.9973(mean+0.9988) under 70kVp and 0.16 sec. exposure. The equation showed the highest r^2 was Y=4.75614612-0.06300524x +0.00032367x^2 -0.00000060x^3. 2. The value of r^2 became lower when to equation was calculated from the copper stepwedge including 1.00㎜ step. In case of including 0㎜ step for calculation, the value of r^2 showed variabilit. 3. The coefficient of variation showed 0.11, 0.20 respectively at each copper step of 0.2, 0.1㎜ in thickness. Those of the other steps to 0.9㎜ ranged from 0.06 to 0.09 in mean value. 4. The mean Cu-Eq value of alveolar bone was 0.14±0.02㎜ under optimal exposure. The values were lower than the mean under the exposures ver 0.20sec. in 60kVp and over 0.16sec. in 70kVp. 5. Under the exposure condition of 60kVp .16sec., the coefficient of variation showed 0.03, 0.05 respectively at each copper-step of 0.3, 0.2㎜ in thickness. The value of r^2 showed over 0.9991 from both 9 and 10 steps of copper. The Cu-Eq value and the coefficient of variation was 0.14±0.01㎜ and 0.07 at alveolar bone respectively. In summary, A clinical application of this system seemed to be useful for assessment of quantitative assessment of alveolar provided high coefficient of determination is obtained by the modified adoption of copper step numbers and the low coefficient of variation for the range of Cu-Equivalent value of alveolar bone from optimal kVp and exposure time for each x-ray machine.