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인터럽트 발생 간격을 이용한 리모콘 신호 수신방법 및 시스템
김태우(Tae Woo Kim),강한수(Han Soo Kang),류완석(Wan Seok Ryu),홍인기(In Ki Hong),정성택(Sung Taek Chung) 한국멀티미디어학회 2006 한국멀티미디어학회 학술발표논문집 Vol.2006 No.1
본 논문에서는 인터럽트 발생 간격을 이용하여 리모콘 신호 수신 방법을 제안하였으며 제안된 방법을 시스템에 적용시켰다. 리모콘 신호 수신시스템을 통하여 수신된 신호가 어느 정도의 인터럽트 발생 시간 간격을 가지고 있는 지 측정하고 그 인터럽트 발생 시간 간격을 이용하여 수신된 신호의 리모콘 신호의 유무를 판단하였다.
강직성 척추염에 시행한 고관절 전치환 성형술 -4례보고-
박명식 ( Myung Sik Park ),강한수 ( Han Soo Kang ) 대한고관절학회 1993 Hip and Pelvis Vol.5 No.1
Ankylosing spondylitis is a disease of the spine occuring in late adolescence or early childhood characterized pathologically by progressive inflammation of the spine, sacroiliac joints, and the lager joints of the extremities, particulary the hips, knees, and shoulders, and leading to fibrous or bony ankylosis and deformity. Total hip arthroplasty in patients with ankylosing spondylpitis is indicated in the hip with poor posture and or painful motion. At the department of Orthopaedic surgery of Chonbuk University Hospital, between 1991 and 1992, total hip arthroplasty was performed in 3 patients(4 hips) who had ankylosing spondylitis, and has reviewed since two months "o one year and four months after operation and the results are as follows. l. All patient was male and the HLA-B27 antigen was negative and all were definite ankylosing spondylitis diagnosed. 2. Duration of immobility of the involved hip ranged from five to ten years. 3. Involvement of the cervical spine or of the temporomandibular joint causes difficulties in anesthesia, particularly with intubation. So we tracheal intubation. 4. We routinely used EHDP pre and postoperative. Only One patient was developed heterotopic ossification(Brooker grade II). 5. The average Harris score of the four hips before arthroplasty and after was 36.3 and 73.3 But most patient was multiple involved joint.
음각 점진성형에서 치수정밀도에 영향을 미치는 형상 파라미터 분석
강재관(Jae Gwan Kang),강한수(Han Soo Kang),정종윤(Jong-Yun Jung) 한국산업경영시스템학회 2016 한국산업경영시스템학회지 Vol.39 No.4
Incremental sheet forming (ISF) is a highly versatile and flexible process for rapid manufacturing of complex sheet metal parts. Compared to conventional sheet forming processes, ISF is of a clear advantage in manufacturing small batch or customized parts. ISF needs die-less machine alone, while conventional sheet forming requires highly expensive facilities like dies, molds, and presses. This equipment takes long time to get preparation for manufacturing. However, ISF does not need the full facilities nor much cost and time. Because of the facts, ISF is continuously being used for small batch or prototyping manufacturing in current industries. However, spring-back induced in the process of incremental forming becomes a critical drawback on precision manufacturing. Since sheet metal, being a raw material for ISF, has property to resilience, spring-back would come in the case. It is the research objective to investigate how geometrical shaping parameters make effect on shape dimensional errors. In order to analyze the spring-back occurred in the process, this study experimented on Al 1015 material in the ISF. The statistical tool employed experimental design with factors. The table of orthogonal arrays of L 8 (2 7 ) are used to design the experiments and ANOVA method are employed to statistically analyze the collected data. The results of the analysis from this study shows that the type of shape and the slope of bottom are the significant, whereas the shape size, the shape height, and the side angle are not significant factors on dimensional errors. More error incurred on the pyramid than on the circular type in the experiments. The sloped bottom showed higher errors than the flat one. 1)
김태훈 ( Tae Hoon Kim ),유선경 ( Sun Kyoung Yu ),서요섭 ( Yo Seob Seo ),강한수 ( Han Soo Kang ),이철권 ( Chul Kwon Lee ),김흥중 ( Heung Joong Kim ) 조선대학교 치의학연구원 2015 Oral Biology Research (Oral Biol Res) Vol.39 No.1
Purpose: Panoramic radiography is primary and easily used in the dental treatment for preoperative evaluation of the various anatomical structures. The aim of this study was to assess the visibility and anatomical morphology of the mandibular incisive canal using panoramic radiography. Materials and Methods: Panoramic radiographs were obtained from 60 patients (30 males, 30 females; mean age 49.5 years) using a standard exposure and patient positioning protocols. The visibility of the mandibular incisive canal, the origin and end points according to the tooth level, and horizontal distance between two points were measured. The diameter of the incisive canal at the origin point and the vertical distance between each origin and end points and the inferior border of the mandible were investigated. The significant difference between gender, age, and mandible side were analyzed on all measurements parameters. Results: The mandibular incisive canal was visible in 56 cases (46.7%) radiographs. The mean origin and end points according to tooth level were located between the second premolar and the first premolar and the canine, respectively, and the horizontal distance was 9.61±3.74 mm. The mean diameter at the origin point was 2.96±0.55 mm and the mean vertical distance at the origin and end points were 11.48±1.59 and 10.96±2.08 mm, respectively. The mandibular incisive canal showed statistically significant differences in all measurements parameters on gender. Conclusion: The mandibular incisive canal in panoramic radiography presented the low detection rate. However, these results can provide primary morphological features of the mandibular incisive canal on panoramic radiographs which is widely used in dental practices.