임플란트의 수와 어태치먼트의 종류에 따른 하악 임플란트 지지 오버덴춰의 삼차원 광탄성 응력분석

한상훈,태윤섭,진태호,조혜원,Han, Sang-Hoon,Tae, Yoon-Sup,Jin, Tae-Ho,Cho, Hye-Won 대한치과보철학회 1997 대한치과보철학회지 Vol.35 No.3

The purpose of this study is to evaluate the stress distribution in the bone around dental implants supporting mandibular overdenture according to the number of implant and the type of attachment. Two or four implants were placed in an edentulous mandibular model and three dimensional photoelastic stress analysis was carried out to measure the fringe order around the implant supporting structure and also to calculate principal stress components at cervical area of each implant. The attachments tested were rigid and resilient type of Dolder bar, Round bar, Hader bar and Dal-Ro attchment. The results were as follows ; 1. In 2-implant supported overdenture using Round bar, Hader bar, and Dal-Ro attachment, compressive stress pattern was observed on the supporting structure of implant on loaded side, while tensile stress pattern in unloaded side. 2. In 2-implant supported overdenture using Dolder bar, the rigid Dolder bar shared the occlusal loads between 2 implants in a more favorable manner than was exhibited by the resilient type, while the resilient type placed a more stress on the distocervical area of the implant on the loaded side. But compressive stress pattern was observed in both the loaded and unloaded sides in either case. 3. In 2-implant supported overdenture, rigid and resilient type of Dolder bar exhibited more cross arch involvement than the Round bar, Hader bar, or Dal-Ro attachment. 4. In 4-implant supported overdenture using resilient Dolder bar and Hader bar, stress turned out to be distributed evenly among the implants between loaded and unloaded side, but thor was no reduction in the magnitude of the stress in the surrounding structure of implant contratry to 2-implant supported overdenture. 5. The stress pattern at cervical area of implant was different with the number of implant or the type of attachment but the overload, harmful to surrounding structure of implant, was not observed.

비대칭 H형강을 사용한 슬림플로어 보의 내화성능에 관한 연구

한상훈,최승관,김희주,Han, Sang Hoon,Choi, Seng Kwan,Kim, Hee Ju 한국강구조학회 2007 韓國鋼構造學會 論文集 Vol.19 No.4

본 연구는 비대칭 H형강을 사용한 슬림플로어 보의 화재시 구조성능에 관한 실험 및 해석적 연구로서, 화재시 본 합성부재의 구조거동을 파악하여 합리적 내화설계의 자료를 얻는 것이 목적이다. 화재실험으로 계획된 여러 변수의 시험체를 제작하고 상온과 고온에서 휨실험을 수행하여 시간에 따른 온도분포, 하중-처짐 관계를 분석하였다. 해석적 방법은 설계된 단면에 대하여 완전 합성을 가정으로, 열전도 해석으로 온도분포를 구하고 재료의 잔존강도를 분할된 메쉬에 입력하여 휨강도를 예측하였다. 웨브의 두께와 깊이를 변수로 하여 슬림플로어 보의 화재시 휨내력을 고찰하였다. This paper is a pilot study regarding an experimental and parametric study to investigate the structural behavior of slimfloor beam(ASB) in fire. The objective of this research is to obtain the rational fire resistance design method through understanding the structural behavior of composite members in fire. The flexural capacity of slimfloor section under various thermal conditions is examined on a basis of the strength retention of the materials at elevated temperatures and full bonding assumption. The effect of web thickness and ASB depth to the moment capacity in fire is also examined.

최신판례분석 : 임의제출물의 영치와 위법수집증거 배제법칙 - 대법원 2016. 3. 10. 선고 2013도11233 판결 -

한상훈1 ( Han Sang Hoon ) 법조협회 2016 法曹 Vol.65 No.8

형사소송법 제218조에 따르면 피의자나 기타인이 유류한 물건, 또는 소유자, 소지자, 보관자가 임의로 제출한 물건은 수사기관이 영장없이 압수할 수 있고, 사후에도 영장을 발부받을 필요가 없다. 본고는 위법하게 압수한 증거와 사후의 임의제출에 관하여, 2016. 3. 10. 대법원이 선고한 <한국 까르푸 판결>(2013도11233)을 소개하고 평석한 것이다. 이 판결의 판시내용은 수사기관이 별개의 증거를 피압수자 등에게 환부하고 후에 임의제출 받아 다시 압수하였다면 증거를 압수한 최초의 절차 위반행위와 최종적인 증거수집 사이의 인과관계가 단절되었다고 평가할 수 있으나, 환부 후 다시제출하는 과정에서 수사기관의 우월적 지위에 의하여 임의제출 명목으로 실질적으로 강제적인 압수가 행하여질 수 있으므로, 제출에 임의성이 있다는 점에 관하여는 검사가 합리적 의심을 배제할 수 있을 정도로 증명하여야 하고, 임의로 제출된 것이라고 볼 수 없는 경우에는 증거능력을 인정할 수 없다는 것이다. 결론적으로, 대상판결은 피고인의 동생이 세무공무원에게 USB 등을 제출할 때에제출의 ‘임의성`을 검사가 합리적 의심의 여지 없이 입증하지 못하여서, 최초의 위법한압수와 2차적 증거의 인과관계가 단절되었다고 보기 어려워서 증거능력을 부정하였다. 하지만 위법하여 증거능력이 부정되는 증거를 제외하고 증거능력이 인정되는 나머지 증거들만으로도 피고인의 조세포탈에 대한 유죄를 인정할 수 있다고 하여 상고를 기각하였다. 대상판결은 형사소송법 제218조에 의한 임의제출의 ‘임의성`을 명시적으로 부정한 최초의 대법원판례가 아닌가 싶다. 아울러 독수독과 원칙에 대한 예외로서 인과관계의 단절에 대한 검사의 입증정도를 엄격하게 부과한 판결로서 그 의미가 크다고 할 것이다. Article 218(Seizure without Warrant) of the Korean Code of Criminal Procedure provides that “a prosecutor or senior judicial police officer may seize an article which has been discarded by a criminal suspect or any other person, or those which have been voluntarily produced by their owner, possessor, or custodian without a warrant.” The present paper reviews a recent Supreme Court of Korea decision(2013do11233) of 2016 regarding an unlawful seizure and a possibility of breaking the connection between an initial illegal seizure of an item(USB) and a following voluntary production by a owner, possessor, or custodian after the investigating agency returns the item. Where the subsequent production of the item is voluntary, then the connection between the primary violation and the item produced may be regarded as broken or attenuated(an exception to the fruit of the poisonous tree doctrine). However, the subsequent production could be caused by threatening or actually coerced by the law enforcement agencies. Therefore the 2016 decision required the prosecution to prove beyond a reasonable doubt that the production was conducted voluntarily by the possessor or custodian. Otherwise the item shall not be admissible. In the 2016 decision, the Supreme Court found that the prosecution failed to prove the voluntariness of the production, so the Court regarded the submission of the item as illegal and inadmissible to the trial. This decision is thought to be the first judgment that denies the voluntariness of a production of Art. 218. In addition, the Court put the standard of the proof beyond a reasonable doubt concerning the voluntary character of the production to attenuate or break the connection of the primary illegal seizure. The holding of the decision seems to be appropriate to prevent the possible threat or coercion of the prosecution or the police to the owner, possessor, or custodian of an evidence. In addition, it would be important to differentiate a standard of proof(proof beyond a reasonable doubt, probability proof, etc) and a method of proof.

커피에 의한 의치상 레진의 색 변화에 관한 연구

한상훈,동진근,진태호,Han Sang-Hoon,Dong Jin-Keun,Jin Tai-Ho 대한치과보철학회 1993 대한치과보철학회지 Vol.31 No.4

The purpose of this study was to investigate the color change of denture base resins by coffee. Denture base resins for this study were Triad VLG Denture Base (Dentsply, York Div. U.S.A.), Premium Super-20 (Lang Dental Mfg. Co., Inc., U.S.A.) for denture base, Toughron Rebase (Miki Chemical Prod., Kyoto, Japan), Jet Repair Acrylic (Lang Dental Mfg. Co., Inc., U.S.A.), Triad Reline (Dentsply, fork Div. U.S.A.) and Tokuso Rebase (Tokuyama Soda Co., Ltd., Japan) for denture rebase. Twenty specimens of each denture base resin were made and polished. The color of specimens was measured by colorimeter (Model Tc-6FX, Tokyo Denshoku Co. Japan), and they were stored in coffee for three weeks and then color changes were measured. The obtained results were as follows : 1. The L*, a*, b* and the E*ab values of all denture base resins were changed after three weeks. 2. The amount of color change on L*, a*, b* and the E*ab value of each specimens showed different patterns. 3. The b* values of Triad Reline materials were changed more than the other materials. 4. The E*ab values of Triad Denture Base materials were changed more than the other materials.

열처리 온도에 따른 8YSZ 후막의 미세구조

한상훈,노효섭,나동명,김광호,이운영,박진성,Han, Sang-Hoon,Noh, Hyo-Seop,Na, Dong-Myung,Jin, Guang-Hu,Lee, Woon-Young,Park, Jin-Seong 한국세라믹학회 2011 한국세라믹학회지 Vol.48 No.1

In order to fabricate 8YSZ thick film by silk screen printing, YSZ(yttria-stabilized zirconia) commercial powder was used as starting materials. Paste for screen printing was made by mixing 8YSZ powder and organic vehicles. 8YSZ thick film was formed on $Al_2O_3$ substrate. The crystal structure, and microstructure were investigated. Grain size of 8YSZ was increased with increasing calcination temperature and rapid grain growth was shown after calcination at $1300^{\circ}C$. Microstructure showed the mixture of large and small grain size after $1400^{\circ}C$ sintering. Shrinkage rate of 8YSZ thick film sintered at $1400^{\circ}C$ was more than 40%.

체외수정시술 시 획득한 미성숙난자의 환자 연령에 따른 체외성숙률 및 수정률 비교

한상훈,이정렬,김현준,문정희,지병철,구승엽,서창석,김석현,최영민,김정구,문신용,Han, Sang Hoon,Lee, Jung Ryeol,Kim, Hyun Jun,Moon, Jung Hee,Jee, Byung Chul,Ku, Seung-Yup,Suh, Chang Suk,Kim, Seok Hyun,Choi, Young Min,Kim, Jung-Gu,Moon, S 대한생식의학회 2005 Clinical and Experimental Reproductive Medicine Vol.32 No.4

Objective: To investigate the effects of female age on in vitro maturation and fertilization of immature oocytes from controlled ovarian hyperstimulation (COH) in human IVF-ET program. Method: A total of 96 immature oocytes (GV & metaphase I) obtained from 40 cycles of IVF-ET (29 patients). The mean age of female patients was $31.8{\pm}3.1years$. Ovulation was triggered by urinary or recombinant hCG. Immature oocytes were cultured with YS medium containing 30% of patients' human follicular fluids, LH (1 IU/mL), FSH (1 IU/mL) and EGF (10 ng/mL), and then matured oocytes were fertilized by ICSI. In vitro maturation and fertilization of immature oocytes were analyzed according to age of female (< 34 or ${\geq}34years$). Results: The maturation rate was similar between two groups (68% vs 64%). The fertilization rate of in?vitro-matured oocytes was higher in patients < 34 years old, but there was no statistical significance (64% vs 50%, p=0.347). The fertilization rate of in-vitro-matured oocytes was significantly lower compared with those of in-vivo-matured oocytes in both age groups (64% vs 79%, p=0.035, 50% vs 86%, p=0.007). Conclusion: In older female group, fertilization rate of in-vitro-matured oocytes seems to be decreased. Further investigations should be warranted to increase fertilization potential of in-vitro-matured oocytes.

Belite 시멘트를 사용한 고강도 철근콘크리트 보의 휨 거동에 관한 실험연구

한상훈,구봉근,김기수,조홍동,전채만,Han, Sang-Hoon,Koo, Bong-Kuen,Kim, Gee-Soo,Cho, Hong-Dong,Juen, Chea-Man 한국콘크리트학회 1999 콘크리트학회지 Vol.11 No.1

본 연구는 Belite를 사용한 고강도 철근콘크리트 보의 휨 거동에 관한 연구이다. 이를 위하여 Belite 시험체의 (1) 하중-처짐 관계와 시험체 중앙단면의 변형률 분호, (2) 하중-중립축관계와 모멘트-곡률 관계, (3) 연성평가, (4) 기존규준식과 실험값에 의한 휨강도 비교 등을 통하여 1종 보통 포트랜드 시멘트를 사용한 기준시험체(OPC)의 실험결과와 비교분석 하였다. 주요 실험변수는 콘크리트의 강도(350, 600kgf/$cm^2$)와 철근비(2D-13, 2D-16, 2D-19, 2D-22 and 2D-25)로 하였으며, 3점 재하를 실시하였다. 실험결과, 고강도${\cdot}$고유동 Belite 콘크리트를 사용한 본 실험의 경우, 전반적으로 1종 콘크리트의 휨거동 특성과 비슷한 경향을 보였다. A study was conducted to investigate the flexural behavior of reinforced high-strength concrete beams using Belite cement. In this study, fourteen reinforced Belite and control beams were tested. The major experimental variables are compressive strength(350kgf/$cm^2$ and 600kgf/$cm^2$)of concrete and reinforcement ratios(0.0086~0.0345). They were tested by three point loading method. Comparing with flexural behavior of normal reinforced concrete beams, the investigation were to : (1) determine experimentally the load-displacement relationships and the strain distribution on the section of test beams : (2) determine experimentally the moment-curvature and the load-neutral axis relationship of Belite ; (3) investigate the flexural ductility of Belite ; (4) estimate the ratio of the capacities of nominal moment strength as a function of ACI to as a experiment. From the test results, the flexural behavior of reinforced high-strength concrete beams using Belite cement are similar to flexural behavior of normal reinforced concrete beams.

감두탕 약침액의 암예방 효과에 관한 연구

한상훈,박인규,문진영,임종국,Han, Sang-Hoon,Park, In-Kyu,Moon, Jin-Young,Lim, Jong-Kook 대한침구의학회 2000 대한침구의학회지 Vol.17 No.1

Gamdutang aqua-acupuncture solution(GAS), Gamdutang water-extracted solution(GWS) and Degamdutang aqua-acupuncture solution(DGAS) were prepared and tested for potential antitumor activities. It was used three biomarkers (quinone reductase, omithine decarboxylase, glutathione) to test chemopreventive potentials of GAS, GWS, DGAS. GAS was potent inducer of quinone reductase activity in Hepalclc7 murine hepatoma cells in culture, whereas GWS is less potent. GAS, GWS and DGAS were significantly induced quinone reductase activity in cultured rat normal liver cell, Ac2F. Glutathione levels were increased about 1.8-fold with GAS, 1.0-1.1 fold with GWS, DGAS in cultured murine hepatoma hepaiclc7 cells. In addition glutathione s-transferase levels were increased with GAS, GWS and DGAS. The effects of GAS, GWS and DGAS were tested on the growth of Acanthamoeba castellanii. Proliferation of Acanthamoeba castellanii was inhibited by GAS, GWS and DGAS at concentradons of $1{\times}$ and $5{\times}$. These results suggest that GAS has chemopreventive potential by inducing quinone reductase and quinone reductase activities, inhibition of ornithine decarboxylase activity, and increasing glutathione levels.

여러 단면형상을 갖는 뼈대구조물의 최적설계

한상훈,이웅종,Han, Sang Hoon,Lee, Woong Jong 대한토목학회 1993 대한토목학회논문집 Vol.13 No.4

응력 및 변위제약 하에 뼈대구조물의 초소중량설계를 얻기 위한 효율적인 방법을 제안한다. 주문제작이 빈번히 이루어지는 공학설계의 응용을 위해 다음의 5가지 단면형상을 고려하였다.(rectangular형, frame형, tube형, channel형 그리고 I형). 최적화 과정의 효율성을 증진시키기 위해 구조응답량(절점력, 변위)을 단면성질에 대해 1차 Taylor급수 전개했고 반면에 단면치수를 설계변수로 고려하였다. 제안된 방법의 효율성과 신뢰성을 보이기 위해 수치예를 통해 다른 방법에 의한 결과와 비교하였다. 그 결과 구조해석의 수를 크게 감소시킬 수 있었으며 뼈대구조물의 최적화에 매우 효율적으로 적용될 수 있음을 알게 되었다. An efficient method to solve the minimum weight design problem for frame structures subjected to stress and displacement constraints is presented. The different cross-sectional shapes are conside red in order to apply engineering design in which usually required custom fabrication. To increase the efficiency of the optimization process, the structural response quantities(nodal forces, displacements) are linearized with respect to cross-sectional properties or their reciprocal, based on first order Taylor series expansion, while cross-sectional dimensions are considered as design variables. Numerical examples are performed and compared with other methods to demonstrate the efficiency and reliability of approximation method for frame structural optimization with different cross-sectional shapes. It is shown that the number of finite element analysis is greatly reduced and it leads to a highly efficient method of optimization of frame structures.

공학용 가상 실험실을 위한 Web용 기반 시스템의 구축

한상훈,유성현,조형제,Han Sang-Hoon,You Sung-Hyun,Cho Hyung-Je 한국공학교육학회 2000 공학교육연구 Vol.3 No.1

최근 인터넷을 기반으로 일반 사용자들에게 멀티미디어 정보를 이용하여 효과적인 교육수단을 제공하려는 연구가 활발히 진행되고 있다. 그 대표적인 예가 원격교육, 가상대학 등으로 이른 위주의 일반 교과 과목에 대한 교육은 많이 시도되고 있으나 공학 분야의 실험실습 교육을 위한 경우는 비교적 적은 편이다. 본 논문에서는 인터넷을 바탕으로 한 실험실습 교육의 일환으로 기계, 전자, 화학 등 공학분야의 가상 실험실습실을 지원하기 위해 구축한 기반시스템에 대해 소개한다. 여기에 도입된 가상 실험실의 모델로 클라이언트/서버 방식을 기초로 하여 서버에서 시뮬레이터가 수행되고 클라이언트를 통해 결과를 볼 수 있는 시뮬레이티브 방식이 먼저 논의되고, 이와는 달리 사용자가 초기에 한번 관리 서버를 경유한 이후로는 별도의 실습서버와 직접 통신하며 실험실습의 결과뿐 아니라 진행 상태도 영상으로 볼 수 있는 인터랙티브 방식이 소개된다. Recently there have been many Internet-based studies to provide personal users an efficient educational tool making use of multimedia data. The typical examples are remote education and virtual university where many educational trials on theory-based contents have been performed more frequently than those on experiment-based contents for engineering area. This paper describes about a base system implemented as an example of Internet-based experiment-oriented educations to establish cyber engineering laboratories for mechanics, electronics and chemistry. For the first time as a model of cyber engineering laboratories we herein Introduce in detail a server-and-client-based simulative method in which the result may be displayed on computer monitor of client PC while a simulator program is executed on the server. Secondly we introduce an interactive method in which the user of client PC may not only communicate directly with experiment server after initial connection with management server but also he can confirm the status of experiment being performed by way of video as well as experimental result.