컴퓨터에서 쉽게 즐길 수 있는 비행 슈팅게임의 설계

강상우, 김지윤, 안성옥, 김수균, 박동원 배재대학교 공학연구소 2014 공학논문집 Vol.16 No.1

슈팅 게임(Shoting game)은 액션게임에 속해 있는 장르중 하나로 총 또는 미사일 같은 원거리 무기를 사용해 공격과 적의 공격을 피하는 게임이며[1]‘비행슈팅(Aircraft Shooting)’은 비행기를 조작해서 싸우는 게임이다[2]. 비행슈팅게임은 누구나 게임에 대해 쉽게 이해하고, 쉽게 즐길 수 있기 때문에 다른 장르의 게임들에 비해 대중화 되어 있다. 본 게임은 컴퓨터에서 쉽게 즐길 수 있도록 설계된 게임으로 우주를 배경으로 제작된 게임이며, 수많은 운석과 기뢰들을 피하고, 게임 중반부에 나오는 해적선을 파괴하고 목적지까지 도달하는 것이 게임의 목표이다. 본 게임은 Unity3D를 이용하였고, Unity3D엔진은 다른 플랫폼과의 호완성이 좋고 자체 내에서 지원해주는 기능들이 많기 때문에 많은 개발자들이 사용하고 있다.

Saccharomyces cerevisiae에서 Trichoderma Endoglucanase의 발현과 분비

남수완,김병우,신동하,김재범,신지원,정대균,정춘수 동의대학교 기초과학연구소 1999 基礎科學硏究論文集 Vol.9 No.1

The endoglucanase gene, egl6, of Trichoderma sp. was connected with the yeast ADH1 promoter, and the resultant plasmid, pVT-C4, was introduced into three S. cerevisiae host strains (YNN27, 2805, and SEY2102). Among each 80 transformants, the cell growth and expression level of endoglucanase were compared in test-tube cultivation, and three respective transformants for each host cells showing the highest expression level and cell growth were selected. When three recombinant yeast cells were batchwise cultivated for 48 hr in flask, the total activities of endoglucanase expressed were about 1140 unit/1 with 2805/pVT-C4, 1020 unit/l with SEY2102/pVT-C4, and 590 unit/l with (YNN27/pVT-C4. Irrespective of host strain, about 80% of the expressed endoglucanase was detected in the extracellular medium. In addition, it was also found that the recombinant enzyme was secreted into the culture medium as two major forms of lightly and heavily glycosylated proteins.

고농후사료에 대한 목탄 및 활성탄의 첨가 수준이 인공위내 소화율, 휘발성 지방산 및 개스 생산량에 미치는 영향

이수기,차상우,김선균 충남대학교 농업과학연구소 2002 농업과학연구 Vol.29 No.2

본 시험은 목탄 및 활성탄의 첨가가 사료의 반추위내 pH·발효성상·건물 및 영양소 소실율·가스 생산량에 미치는 영향을 조사하기 위하여 in vitro 조건에서 실시되었다. 활성탄과 목탄의 첨가수준은 0.50% 및 1.0%의 수준이었으며, 사료의 조농비율은 오차드 건초와 농후사료 비율은 2:8로 하였다. 그리고 처리간 유의성은 5% 수준에서 검정하였다. 시험 결과를 요약하면, 위액의 pH는 활성탄의 첨가로 유의하게 높아졌다. 그리고 암모니아태 질소는 활성탄 첨가에 의하여 유의하게 높아졌으며, 목탄첨가구는 모첨가구와 비교할 때 유의한 차이가 인정되지 않았다. 또한 VFA molar ratio에서는 전구간에 유의한 차이가 인정되지 않았으며, C2/C3 비율은 유의한 차이는 아니지만 활성탄구가 다소 낮아지는 경향을 나타내었다. 그러나 목탄첨가구에서는 대조구와 유의한 차이가 인정되지 않았다. 건물·조단백질·조지방·NDF·ADF 및 hemicellulose의 소실율은 활성탄 첨가에 의하여 유의하게 증가되는 경향을 나타냈다. 목탄첨가구에 있어서는 0.5%구보다는 1.0%구가 유의하게 높은 성적을 나타내었다. 그러나 hemicellulose의 소실율은 전구간에 유의한 차이가 없었다. 가스 생산량에 미치는 영향은 활성탄 및 목탄 첨가구가 대조구에 비하여 유의하게 많은 양을 나타내었으며, 활성탄 첨가구와 목탄 첨가구를 비교하면 유의한 차이는 아니지만 활성탄 첨가구가 높은 경향을 나타내었다. 위 결과에서 보듯이 활성탄은 가축의 생산성 향상에 유리한 조건을 제공하는 경향이 있지만, 이것을 좀 더 명확히 밝히기 위해서는 활성탄의 흡착능력·위내의 세균층에 대한 연구 및 많은 생체실험도 병행되어야 할 것으로 생각된다. This study was conducted to investigate the effects of the addition of activated charcoal (AC) and oak charcoal on in vitro ruminal fermentation characteristics, nutrient disappearance, and ruminal gas production. AC and oak charcoal were added at the levels of 0.50, and 1.00 % to experimental diet (roughage/concentrate ratio ; 2/8). Ruminal pH and ammonia-N tended to increase by adding AC(P<0.05). But oak charcoal did not affect the ruminal pH and ammonia-N. Although not significant, ruminal total VFA and molar percentage of butyric acid tended to decrease in AC diets, but molar percentage of acetate and propionate were not affected by adding AC. Ruminal degradation of dry matter, crude protein NDF, and ADF in AC diets tended to increase than in non-AC diet, however, no tendency in ruminal degradation of hemicellulose was observed. Ruminal gas production tended to increase in the AC and oak charcoal diets(P<0.05). Although there appeared some beneficial effects in adding AC to ruminant diets in this study, more works should be done with AC before we can make clear conclusion on the use of AC in the ruminant diets.

口眼渦斜 患者의 Gadolinium-DPTA enhanced MRI 所見에 대한 臨床的 考察

김재수,최우석,김용석,고형균,강성길,김창환 경희대학교 동서의학연구소 2001 東西醫學硏究所 論文集 Vol.2000 No.-

This study is designed to evaluate the clinical implications of Gd-DPTA (Gadolinium-diethyl - enetriamine pentacetic acid) enhanced MRI(Magnetic resonance imaging) in Bell's palsy and find it's usefulness in Oriental Medicine In this study, 25 outpatients with Bell's palsy were studied that MRI was performed. To evaluate degree of facial palsy, H-B(House-Brackmann) Grade was used. In Oriental Medical therapy, Acupuncture and Herbal medicine were treated. Subjective causes was divided into exposure to chill, fatigue, stress, mixed cases. Enhanced site was compared with symptoms which were disorder of eye, hearing, taste, and facial muscle palsy. Also, Relation between time which was performed MRI and enhancement was analyzed. The enhanced lesion in MRI was divided into five segments; Internal auditory canal, Labyrinthine segment, Geniculate ganglion, Tympanic segment, Mastoid segment. In Bell's palsy, 20 of 25 patients(80%) had abnormal contrast enhancement of the facial nerve. The H-B grade and interval performed MRI from onset were directly proportionate to enhancement. That is to say, Severe facial palsy short interval show high possibility of enhancement. There was no relation between subjective causes and enhanced site of facial nerve in MRI. Also Clinical symptoms didn't coincide with MRI findings.

AAC(보완대체 의사소통)의 중증 정신지체아동 적용에 대한 태도 연구 : 특수교육·재활 관련 전공 대학생들을 중심으로

노동우,백은아,강수균 국립특수교육원 2002 특수교육연구 Vol.9 No.2

본 연구의 목적은 AAC(보완대체 의사소통)의 중증 정신지체아동 적용에 대하여 특수교육 및 재활관련 전공 대학생 104명을 대상으로 필요도, 인식도, 중요도 등을 조사한 태도 연구이다. 각 집단에 대하여 빈도분석을 실시하고 성별, 전공별, 학년별, 장애인과의 접촉유무별, AAC 과목 수강여부별, 실습여부별 등에 따른 차이를 검정하기 위하여 x^2 검정을 실시하여 분석하였다. 분석결과, 전체적으로 필요도 및 중요도 영역에서는 높은 결과가 나타났으나 인식도 영역에서는 낮은 결과가 나타났다. 이는 재활관련 및 특수교육 분야와 관련이 있는 대학 내에서 AAC 관련 전문과목의 편성 및 교육이 필요하며, 현장에서의 AAC 교육 및 실습 등이 이루어져야함을 시사하고 있다. The purpose of this study was to investigate the university students' attitudes toward the augmentative and alternative communication(AAC) use in children with severe mental retardation. One-hundred-four university students who major in rehabilitation science or special education self-administered questionnaires on the necessity, the awareness, and the importance of AAC use. The frequency analysis and the chi-square test were used to analyze the trend and the differences among groups of different gender, areas of study, years in the university, experiences of interacting with people with disabilities, training in AAC classes, and practical training experiences. The results of the survey show that overall awareness about AAC use was lower than the subjects' perceived necessity of AAC methods. The rated importance of the AAC use by the subjects were high in all survey items. Students who had attended AAC classes and had practical training experience showed more positive attitude to the AAC use. The results of the present study suggest that the professional AAC curriculum development along with practical training is an important factor in promoting public awareness on the AAC use for the people with disabilities.

40ㆍ50대 일부 남성근로자의 골감소증 및 골다공증 유병실태와 위험요인

장윤균,서현주,진영우,정미선,성숙희,박두용,김종순,김수근 大韓産業醫學會 2006 대한직업환경의학회지 Vol.18 No.2

목적: 최근 국내에서도 골다공증과 관련된 생활양식의 규명에 관한 연구가 이루어지고 있으나, 아직까지 남성 골다공증에 대한 연구가 활발하게 이루어지지 않아 40, 50대 남성근로자를 대상으로 유병률을 파악하고, 골감소증 및 골다공증 관련 위험요인을 확인하고자 하였다. 방법: 원자력발전소에 근무하는 40, 50대 남성 근로자 2,073명을 대상으로 2004년 3월~7월 기간동안 생활습관을 파악하기 위하여 자기기입식 전산입력 방식으로 최종학력, 흡연여부, 음주여부, 신체활동 횟수를 조사하였고, 골밀도검사, 체성분검사(체지방률, 허리-엉덩이둘레비), 신체계측(신장, 체중)을 시행하였고, 골밀도 검사는 Osteosys사의 EXE-3000을 이용하여 종골부위를 측정하였고, 체지방률, 허리-엉덩이 둘레비는 Biospace사의 Inbody 3.0을 이용하여 측정하였다. 통계분석은 골감소증 및 골다공증의 관련요인을 분석하기 위해 다중로지스틱회귀분석을 시행하였다. 결과: 연구대상자의 골감소증 및 골다공증 유병률은 22.8%와 3.0%이었으며, 골감소증 및 골다공증의 관련요인으로는 연령이 증가할수록, 흡연자이거나 과거흡연자일 경우, 체질량지수가 25 kg/m^(2) 미만일 경우, 30분 이상 신체활동 횟수가 주 3회 미만일 경우가 유의한 연관성이 있었다. 결론: 성인 남성 40, 50대의 골감소증 및 골다공증의 유병률이 높은 편이었으며, 골감소증 및 골다공증으로 이환을 예방하기 위하여 금연, 활발한 신체활동을 촉진하여 골밀도를 개선시키는 생활습관으로의 변화를 권고해야 할 것이다. Objective: This study was conducted to investigate the prevalence and risk factors of osteopenia and osteoporosis in 40-59 year-old male workers working at nuclear power plants. Methods: Bone density, body composition, and anthropometry data were analyzed for 2,073 subjects were carried out from March 2004 to July, 2004. Educational level, smoking status, drinking status and frequency of physical activity were investigated by self-reported questionnaires through internet to identify lifestyles related to bone mass density. Bone mass density was measured by EXE-3000 of Osteosys Co. And body fat percentage, and waist-to-hip ratio by inbody 3.0 of Biospace Co. Results: The prevalence of ostepeniaosteopenia and osteoporosis was 22.8% and 3.0%, respectively. According to multinominal multinomial logistic regression analysis, age, smoking status (current smoker and former smoker), low body mass index (< 25kg/m^(2)), and frequency of physical activity were significantly associated with osteopenia and osteoporosis. Conclusions: The prevalence of ostcopenia and osteoporosis wasseemed high for the, when it was inferred from subjects' age compared to the results of previous studies. The This study results suggeststhat it is necessary for 40-59 year-old male workers to stop smoking, and exercise regularly in order to prevent osteopenia and osteoporosis.

HMG-CoA 환원효소 억제제에 의한 ICAM-1 유전자의 발현조절

김현진,정효균,홍우정,김군순,조영석,김도희,채수흥,구본정,송민호,노흥규,김영건 충남대학교 의과대학 지역사회의학연구소 2001 충남의대잡지 Vol.28 No.1

Background : ICAM-1 act as one of major adhesion molecules in the atherosclerotic lesion. ICAM-1 expression is mainly regulated at the level of transcription and depend on IFN-γ signal transduction pathway in which the STAT1 transcrption factor is a critical intermediate. IFN-γreceptor not only initiates tyrosine 701 phosphorylation of STAT1 by Jak1 and Jak2, but also phosphorylates serine 727 through the activation of Raf-1/MAP kinases. HMG-CoA reductase inhibitors have anti-atherosclertic effects, beyond normalization of hypercholesterolemia, by directly acting on endothelial cells, macrophages and vascular smooth muscle cells. HMG-CoA reductase inhibitors suppress the synthesis of isoprenoid intermediates such as geranylgeranyl-pyrophosphate or farnesylpyrophosphate. These effects results inhibitors suppress the synthesis of isoprenoid intermediates such as geranylgeranyl-pyrophosphate or farnesylpyrophosphate. These effects results inhibition posttranslational farnesylation and geranyl-geranylation processing of small GTP-binding preoteins and inhibition of normal signaling activities. Method : We made several 5'-deletion constructs of rat ICAM-1 promoter and analyzed the promoter activities by measuring the luciferase activity after transfection into ECV304 cells and smooth muscle cells. We checked the level of total and phosphorylated STAT1 protein by immunoblot analysis using specific antibodies. Results : Lovastatin inhibits IFN-γ-induced ICAM-1 gene expression in the ECV304cell. The cells pretreated with PD98059, MEKK inhibitor showed significantly low ICAM-1 RNA induction with IFN-γ stimulatio. IFN-γ induced phosphorylation of tyrosine 701 was not significantly changed by the pretreatment of lovastatin. But lovastatin suppresses IFN-γ-induced phosphorylation of ERK1/ERK2 which are responsible for the seine 727 phosphorylation in STAT1. Conclusion : We showed that HMG-CoA reductase inhibitors, lovastatin, suppresses IFN-γ mediated ICAM-1 gene expression through the inhibition of transcription. HMG-CoA reductase inhibitor suppresses IFN-γ-induced phosphorylation of serine 727 in STAT1 through the modulation of MAP kinases.

능동 클램프 ZVS 플라이백 컨버터의 역률개선에 관한 연구

최태영,류동균,이우석,안정준,원충연,김수석 성균관대학교 2002 학술회의지원논문목록집 Vol.2002 No.-

본 논문에서는 single-stage, two-stage 두가지 역률보상(PFC)기법을 기존의 능동 클램프 플라이백 컨버터에 적용하여 역률 개선을 하였다. 삽입된 플라이백 컨버터의 능동클램프회로가 주스위치와 보조스위치의 영전압스위칭(ZVS)을 구현하며, 스위칭 손실을 줄임으로써 고효율을 얻을 수 있고, 높은 주파수에서의 스위칭이 가능하다. 하지만 일반적으로 사용되는 다이오드정류기, 평활용커패시터에 의한 낮은 역률의 문제점이 남아있다. 본 논문에서는 300W급 능동 클램프ZVS플라이백 컨버터를 설계하여 single-stage, two-stage방식을 적용, 입력역률개선을 시뮬레이션과 실험에 의해 입증하고자 한다. This paper analyzed PFC of active clamp ZVS flyback converter by adding two method PFC (Power Factor Correction) circuit - two-stage and single-stage. The addition of active clamp circuit also provide a mechanism for achieving ZVS of both the primary and auxiliary switches. ZVS also limits the turn off di/dt of the output rectifier, reducing rectifier switching loss and switching noise, due to diode reverse recovery. As a results, the proposed converters have characteristics of the reduced switching noise and high efficiency in comparison to conventional flyback converter. The simulation and experimental results show that the proposed converters improve the input PF of 300W ZVS flyback converter by adding single-stage, two-stage PFC circuit.

혈소판 풍부혈장의 임상적 응용

하정완,김수관,조세인,이철우,정태영,김수흥,김영균 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.5

Platelet-rich plasma is an autologous source of platelet-derived growth factor and transforming growth factor beta that is obtained by sequestering and concentrating platelets by gradient density centrifugation. We have used platelet-rich plasma for bone graft, especially allobone graft, at implant surgery, sinus lift procedure, and cyst enucleation. This article is retrospective study from October 1999 to November 2000. All cases were good healing and clinical success.

Unity 3D Engine을 이용한 3D FPS 게임

박대호, 박동원, 안성옥, 김수균, 이현우 배재대학교 공학연구소 2012 공학논문집 Vol.14 No.1

Emerging and one complete game engine, Unity 3D Engine by the FPS genre of games were produced. Unity 3D Engine to provide several features in the production of the game, basically, terrain making, Unity 3D Engine from collision, particle effects and AI of the enemies is set to create a game using only one genre FPS not be enough to be an element of fun to think that the basic framework of the FPS genre adventure genre of games by adding the elements of the game more fun.