디지털 콘텐츠 산업의 공간분포 특성에 관한 연구

김성훈,임용민,이시형,홍일영 남서울대학교 2010 남서울대학교 논문집 Vol.16 No.1-1

Digital contents industry is a developing industry which is being recognized for its growth possibility. This study is intended to understand the spacial distribution of digital contents industry. To do so, spatial range of this study is set in metropolitan regions to grasp the clustered regions. To understand the clustered regions of digital contents industry, spatial cluster analysis was enforced. As a result, total of 7 clusters were formed. 7 clusters are all located in Seoul, and 4 out of 7 are concentrated in Kangnam Gu. This study grasped the characteristics of these clusters. Locational factors of each company categories, which are the cause of such characteristic, are scheduled to be researched more specifically in the future. Key Words : digital contents industry, Spatial distribution, cluster, Locational factor, Spatial clustering

마우스 Myeloma Cell P3-X63-Ag8.653 및 T Cell Hybridome DO11.10에서의 Programmed Cell Death 유발 특성 비교

임석원,정용훈,최용,한승룡,조양자 한양대학교 의과대학 1998 한양의대 학술지 Vol.18 No.2

This study was aimed to prove that the death of HGPRT myeloma V653 by aminopterin treatment is due to PCD. This PCD was also compared with a relatively well-defined dexamethasone-induced PCD of T-cell hybridoma DO11.10. And these PCD systems were further characterized by inhibiting protein synthesis with cycloheximide, inhibiting mRNA synthesis with actinomycin-D, increasing intracellular calcium with calcium ionophore A23187. Induction of c-myc, an universal apoptosis gene, was also compared between these 2 systems. Viability of V653 cell was decreased by aminopterin-treatment in a dose-dependent manner. After treatment of aminopterin, this decrease of viability began in 6 hours and was accelerated in 12-18 hours. DNA fragmentation of V653 was detectable at 3 hours of incubation and peaked in 12-18 hours. Patterns of decrease in cell viability and increase in DNA fragmentation of dexamethasone-treated DO11.10 cells was similar to that of aminopterin-treated V653 cell, but the progress was much slower. The decrease in cell viability and increase in DNA fragmentation of aminopterin-treated V653 cells were inhibited by protein synthesis inhibitor cycloheximide, and RNA synthesis inhibitor actinomycin-D. In contrast the decrease in cell viability and increase in DNA fragmentation of dexamethasone-treated DO11.10 cell were accelerated by cycloheximide and actinomycin-D additions. Ca^2+ ionophore A23187 addition to aminopterin-treated V653 cells and dexamethasone-treated DO11.10 accelerated the decrease in cell viability and the increase in DNA fragmentation of both cells. In northern blot analysis, induction of c-myc gene was observed in aminopterin-treated V653 cell reached peak at 2hours and thern decreased drastically. Induction of c-myc gene in dexamethasone-treated DO11.10 cells was much slower and the fold of gene induction was much lower than that of aminopterin-treated V653 cell. Ultrastructural changes during the death process were observed by using electron microscope. Dilatation of rough endoplasmic reticulum(RER) and detachment of ribosomes were the earliest ultrastructural changes, which were observed in 30 minutes after death induction. The results of this study suggest that aminopterin-induced selective elimination of fusion partner V653 myeloma cell is due to PCD, and that this process requires de novo protein and RNA synthesis in which a Ca^2+ -mediated signal transduction pathway is involved.

골프스윙시 숙련도에 따른 클럽간의 운동학적 분석

임용규,유병훈 한국운동역학회 2000 한국운동역학회지 Vol.9 No.2

The purpose of this study was to analyze 3D kinematics variables on club length during golf and to prescribe kinematics principles and individual difference on clubs. 1. Each phase swing time Subj. 1 is the longer club during backswing, the longer swing time, but swing time is similar to during downswing. Subj. 2 is the longer club durting backswing, the longer swing time, but swing time is similar to during downswing. Subj. 3 is same with swing time regardless of the length of the club. 2. COG Subj. 1 is resulted from 58.29±0.90 with iron 5, 58.78±1.29 with Drive, 59.73±0.88 with PW in order. Subj. 2 is resulted from 56.77±1.81 with PW, 57.68±1.60 with iron 5, 57.64±1.84 with Drive in order. Subj. 3 is resulted from 54.70±1.52 with PW, 54.80±1.52 with iron 5, 56.75±1.19 with Drive in order. 3. Club head speed Subj. 1 is the fastest PW in 38.19m/sec. Subj. 2 is the slowest PW in 25.26m/sec. Subj. 3 is the fastest Drive in 41.57m/sec. 4. Cocking angle Subj. 1 is no differences in 135.62±16.57˚ , 137.04±21.51˚ , 137.78±19.39˚ on clubs, but resulted form difference in swing first phase due to cocking form. Subj. 2 is no differences in 138.02±19.73˚ , 136.04±22.71˚ , 135.06±22.56˚ on clubs, but resulted form difference in swing first phase due to cocking form. Subj. 3 is no differences in 121.46±26.17˚ , 118.81±23.70˚ , 121.71±25.09˚ on clubs, but resulted form difference in swing first phase due to cocking form. 5. Hip joint rotation angle Subj. 1 is the biggest PW in 182.51±4.54˚ Subj. 2 is the biggest Drive in 182.36±7.24˚ Subj. 3 is no difference on club lenth. 6. Thigh rotation angle Subj. 1 is resulted from 95.71±2.65˚ with PW, 96.10±3.36˚ with iron 5, 97.17±3.29˚ with Drive at left thigh in order, and is resulted form 80.59±3.57˚ with Drive, 81.14±3.41˚ with iron 5, 82.77±3.92˚ with PW at right thigh in order. Subj. 2 is resulted from 95.15±1.77˚ with PW, 96.04±1.68˚ with iron 5, 98.39±1.56˚ with Drive at left thigh in order, and is less rotated 82.86±1.70˚ with only iron 5 at right thigh. Subj. 3 is less rotated in 99.55±3.11˚ with PW at left thigh, and is no difference at tight thigh. 7. Left knee angle Subj. 1. is resulted from 155.60±4.12˚ with Drive, 156.51±3.59˚ with iron 5, 157.73±3.72˚ with PW in order. Subj. 2 is no difference on clubs. Subj. 3 is no difference on clubs. 8. Right knee angle Subj. 1 is mort changed to 162.27±4.21˚ with Drive than other clubs. Subj. 2 is no difference on clubs. Subj. 3 is no difference on clubs.

지역의무 공동도급 수주에 의한 공사현장 운영실태 연구

임의수,최응규,조용훈 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

Since the systematic researches on the operation for compulsory local joint contract are not enough, it is required to make efforts the sound activation of this system. This study analyzes and examines the problems occurred at the operation of construction field due to compulsory local joint contract. And tries to suggest effective operational guidelines

만정 뇌경막하혈종에서 술전 CT음영 및 천두폐쇄배액술후 배액량과 재발과의 상관관계에 대한 연구

임동준,박윤관,정용구,김봉룡,정흥섭,이기찬,이훈갑,서중근 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.10

장간막의 염증성 근섬유모세포종 - 1예 보고 -

임성직,김교영,박재훈,김윤화,박용구,이주희,양문호 대한병리학회 1999 Journal of Pathology and Translational Medicine Vol.33 No.9

Stretch-Shorening Cycle이 ArmCurl 동작에 미치는 영향

우병훈,김석희,임용규 漢陽大學校 體育科學硏究所 2003 體育科學 Vol.23 No.23

In this research, We were selected 10 students from Physical Education at the H University in Seoul through random sampling and by group they had no physical defects. We were compared them mutually through mechanical analysis according to muscular contraction type in the stretch-shortening cycle and shortening-stretch cycle in concentric and eccentric contractions. To investigate their differences, We were performed armcurl motion analysis. As a result, We were derived conclusions as follows. As for the maximum momentum of total segments that is a kinetic variable, that of SSC was higher by DM 0.06kg · m/sec. and by DM 0.97J in the mechanical energy of the total segments; and by DM 22.20N at the maximum power than that of CC. In the analysis of integral electromyography that is avariable of analysis of electromyography, the integral electromyography of biceps brachii muscle increased by DM 0.0240mv · s in the case of the SSC motion than when in the CC motion. There was no difference in the triceps brachii muscle. On the basis of this conclusion, We consider that the stretch-shortening cycle can affect many parts in the movement of the body. Through the results of the analysis of the armcurl motion, we can see that the stretch-shortening cycle is able to put out its strength by using elastic energy accumulated at the time of concentric contractions after accumulating elastic energy through pre-stretching before concentric contractions. Furthermore, since it puts out much more power 'in utilizing muscles compared to simple concentric contractions, We think the training method such as plyometric training can develop more power than previous training methods.

급성기 뇌지주막하출혈에서 Three-Dimensional Computed Tomographic Angiography (3-D CTA)의 유용성

임동준,이훈갑,김봉룡,정흥섭,정용구,이기찬,서중근 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.12

림프구성 뇌하수체염 - 증 례 보 고 -

임동준,정용구,이훈갑,이기찬,서중근 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.11

마찰시험기를 이용한 치과교정용 설측 브라켓과 호선의 마찰력 비교

박지훈,이용근,임범순,김철위 大韓齒科器材學會 2003 대한치과재료학회지 Vol.30 No.1

Frictional force tends to rapidly increase as the relative angle between the bracket slot and the archwire increases beyond critical contact angle. The purpose of this study was to measure the frictional forces between lingual orthodontic brackets and orthodontic archwires with a friction tester (FPR 2000, Rhesca, Japan). The influence of the presence of artificial saliva was determined additionally. Two different lingual brackets (FJT: Fujita, Japan; ORM: Ormco, USA) and one labial standard bracket (CTL:TOMY, Japan) as a control were used in this study. Archwires of three different alloys (SS: Stainless steel, Ormco, USA; TM: β-Titanium, Ormco, USA; EL: Cobalt-chrome, RMO, USA) with 0.016 x 0.022 inch and 0.017 x 0.025 inch were used in this study. Each bracket-archwire couple was tested with a friction tester in the dry and artificial saliva environments. Each measurement was conducted with a angular velocity of 0.1 rpm for 90 seconds under the normal force of 100gf at 25 ℃ for the dry and 34 ℃ for the artificial saliva environment. For SS and EL archwires, frictional force was greater with FJT bracket than with ORM bracket (p<0.01). Compared with SS and TM archwires, 0.016 x 0.022 inch EL archwire showed the greatest frictional forces with two lingual brackets (p<0.01). There were significant differences in frictional force between the dry and artificial saliva environment (p<0.05), however, the effects of artificial saliva were different depending on the bracket-archwire combinations. Experimental critical contact angles were greater than theoretically calculated values.