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Population and home range of wild boar (Sus scurofa) in Gangwon province
Sangjin Lim,Jinkeum Kim,Hun Namgung,Sohyeon Han,Joong-yeol Park,Gyeongtae Choi,Jihyun Kwon,Juhui Choi,Yungchul Park 강원대학교 산림과학연구소 2021 강원대학교 산림과학연구소 학술대회 Vol.2021 No.10
In order to cope with African swine fever, wild boar population density surveys were conducted in four regions of Gangwon-do (Hoengseong, Hongcheong, Yanggu, and Hwacheon), and a study on home range was conducted in Yanggu. Camera trap was used for the wild boar population density survey, and a total of 16 cameras were installed in 4 regions, with 4 cameras in each region. As the results of analyzing the camera trap data collected for six months from November 2020 to May 2021, the average monthly wild boar population densities were 0.1(±0.09)/㎢ in Yanggu, 0.07(±0.09)/㎢ in Hwacheon, 0.06(±0.09)/㎢ in Hongcheon, and 0.04(±0.06)/㎢ in Hoengseong. Home range was calculated based on the movement of 50 days by attaching a GPS transmitter to a wild boar captured in Yanggu (a female of one year age). The area of home range was MCP 100% 12.01㎢, MCP95% 5.42㎢, and MCP50% 1.21㎢.
임상진(Sangjin Lim),이상복(Sangbaok Lee),이준행(Junhaeng Lee),안병주(Byeungju An) 한국방사선학회 2015 한국방사선학회 학술대회 논문집 Vol.2015 No.춘계
엉치엉덩관절(Sacroiliac joint)은 상체 하중을 지탱하고 넙다리와 고관절의 가동범위를 조절해주는 중요한 신체기관인 골반은 척추와 양쪽 고관절을 다리로 이어주는 골격이다. 본 연구자는 엉치엉덩관절에 외상성 질환에 의한 골절이나 전이성 종양에 의한 병변의 유무를 진단하기 위해서 엉치엉덩관절 일반촬영에서 엎드린(Prone) 촬영자세가 어려운 환자들이 할 수 있는 누운자세(Supine)에서 엉치엉덩관절의 Joint Space 보기위해 본 촬영법을 연구하였다. 누운자세(Supine)일때 Joint Space 진단을 위하여 인체 팬톰과 방사선기기를 이용하여 CR 촬영 하고 PACS에 전송하여 엉치엉덩관절(Joint Space) 상, 하의 가로 길이를 측정에 보았다. 연구한 결과 다음과 같은 결과를 얻었다. Joint Space의 실크기는 팬톰(환자)의 검사측을 35° 거상하고 엑스선관 Angle을 수직으로 주고 촬영한 영상에서 가장 잘 관찰 되었으며, 팬톰(환자)의 검사측을 35° 거상하고 엑스선관 Angle을 다리쪽으로 10° 주고 촬영한 영상에서 상부 Joint Space 크기가 가장 잘 관찰 되었고 팬톰(환자)의 검사측을 25° 거상하고 엑스선관 Angle을 머리쪽으로 10° 주고 촬영한 영상에서 하부 joint Space 크기가 가장 잘 관찰 되었다. 이 논문의 제한점으로 팬톰을 이용하여 실험하였기 때문에 환자의 방광의 두께가 다를 수 가 있어 차 후 임상에서 직접 환자를 대상으로 많은 연구를 바란다. As to Sacro iliac joint, the pelvis ,that is the important organ which maintains the upper body load and controls the operation range of the knob leg and hip joint, is the skeleton which connects the backbone and the both hip joints with the leg. By using the human body phantom and radiological instrument in the lying position (Supine) for the Joint Space diagnosis, C,R was taken a photograph in the Articulatio sacro-iliaca general photographing and it transmitted to PACS and in order to diagnose existence and nonexistence of the lesion by the fracture by the traumatopathy or metastatic tumor in the Articulatio sacro-iliaca slept this research the Articulatio sacro-iliaca (Joint Space) look and Bottom length was looked at in the measurement. After researching, I could get the result like next The real size of the Joint Space was well the most observed in the image which uplifted the prosecutor of the phantom (patient) with 35° and which gave the X-ray tube Angle perpendicularly and which it shoots. And. when phantom was 35° in angle, Joint Space was the best observed in the image which was taken in 10° angle of X-ray tube toward leg. The prosecutor of the phantom (patient) was uplifted with 25 and the X-ray tube Angle was given in the head with 10 and the lower part joint Space size was well the most observed in the shot image. the limitation of this dissertation used phantom. therefore, the thickness of patients' bladder could be different, I advise you to experiment with real patients in the future in the clinic
디지털 포렌식 관점에서 패스워드 복구를 위한 사전 파일 구축 방안 연구
임종민(Lim Jong-Min),권혁돈(Kwon Hyuk-Don),최재민(Choi Jaemin),이상진(Lee Sangjin) 한국방송·미디어공학회 2008 한국방송공학회 학술발표대회 논문집 Vol.2008 No.-
기술이 발전함에 따라 컴퓨터 범죄는 점차 증가하고 있으며, 용의자는 사건의 증거가 될 수 있는 파일들에 대해 패스워드 기능을 제공하는 응용프로그램을 활용하여 증거물에 대해 의도적인 접근을 막고 있다. 이로 인해 수사관은 암호화된 파일들에 대해 접근이 매우 어려운 상황이며, 해결 방안으로써 패스워드 복구 프로그램이 대안이 될 수 있다. 하지만 대다수의 패스워드 복구 프로그램들은 단순한 전수조사 공격 방식을 지원하거나 국가별 특징을 고려하지 않은 영문용 사전파일을 적용하여 복구하고 있기 때문에, 국내수사 환경에서 패스워드 검색에 한계가 따르고 있다. 따라서 수사관이 암호화된 파일에 대해 효율적으로 검색할 수 있는 방안이 필요하며, 이를 통해 빠른 시간 내에 증거물을 복구할 수 있는 방안이 강구되어야 한다. 본 논문에서는 최근 국내외 사전구축 사례 및 동향을 조사함으로써 효율적인 패스워드 사전 파일을 구축할 수 있는 방안을 제시하며, 이와 함께 용의자의 개인적인 정보를 이용하여 최적화된 사전파일을 생성할 수 있는 방안에 대해 설명한다.
고농도 침탄강의 탄화물 형성과 피팅 피로강도에 미치는 탄소 포텐셜의 영향
소상진 ( Sangjin So ),신정호 ( Jungho Shin ),임재원 ( Jae-won Lim ),이석재 ( Seok-jae Lee ) 한국열처리공학회 2016 熱處理工學會誌 Vol.29 No.3
In the present work, we investigated the effects of the carbon potential on the formation of carbide at the carburized surface and anti-pitting fatigue strength in the supercarburized steels. Two low carbon steels with different Cr concentrations were adopted and the repeated supercarburizing treatment carried out with the different carbon potential conditions. The microstructure and carbides at the supercarburized surface were observed by using optical microscope and scanning electron microscope. The microhardness test was performed and the hardness distribution and the effective case depth at the supercarburized surface were discussed. The roller pitting fatigue test was carried out and the fatigue strength was evaluated with different the carbon potential conditions. The microstructure of the fatigue specimen surface was observed by means of scanning electron microscope and scanning transmission electron microscope. Depending on the chemical composition of the steels and the carbon potential condition, the resistance of temper softening and pitting failure was influenced due to the carbide distribution and the formation of coarse network carbide. Thus, it was confirmed that the control of the carbide formation is a key factor to improve the anti-pitting fatigue strength in the supercarburized steels.
[재료부문] 비정형격자를 이용한 HVAC 시스템 유동 해석
류상진(Sangjin Ryu),임재문(Jae Moon Lim) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this study the performance of a HVAC(Heating, Ventilation and Air Conditioning) system is evaluated by CFD(Computational Fluid Dynamics) analysis. Unstructured mesh composed of hexahedral and tetrahedral cells is adopted for the purpose of reduction of modeling time. Using this kind of mesh, HVAC system performance, such as system flow rate, pressure drop and flow rate distribution at outlets. is predicted with standard k- E turbulence model and I" order upwind differencing scheme. Analysis results agree very well with test results. The difference between measured and predicted pressured drop is less than I 0% and the difference of system flow rate is in the range of +-3%. Flow rate distribution is similar to measured one.<br/> <br/> <br/> In order to estimate the effect of turbulence model and differencing scheme, two turbulence models, standard and RNG(ReNormalization Group) k-E model, and two differencing scheme, I" and 2,d order upwind scheme, are adopted respectively. Results show that turbulence model and differencing scheme have no noticeable effect.