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손홍범 고요아침 2022 오늘의 가사문학 Vol.- No.32

휴대용 논리분석/신호발생기의 인터페이스 소프트웨어

손홍범(Hong-bum Son),이창수(Chang-su Lee),전민귀(Min-kui Jeon),김병엽(Byung-yup Kim),박성모(Seong-mo Park) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11

In this paper, we describe interface program for the potable logic-analysis and signal-generation system. Implemented system is driven by 80c196kc MCU. It uses USB interface for data transfer. User interface program is developed based on Microsoft WINAPI32. To control system efficiently, we design USB packet on BULK mode, such as control packet, data packet and request packet. This user interface program makes reusing of test vector possible and makes operation of the system more easy.

유한요소 분석을 통한 심미적 교정 브라켓의 응력 및 구조분석에 관한 연구

손홍범,이원유,안주삼,정시동,박영철,박명균 대한치과교정학회 1998 대한치과교정학회지 Vol.28 No.1

본 연구는 유한요소 분석법의 사용으로 세가지 형태의 브라켓에 tipping과 torquing force를 부여하여 응력분포를 알아보고 또한 스테인레스 스틸과 세라믹의 재질을 임의 설정하여 응력분포를 알아보아 생역학적으로 우수한 브라켓을 디자인 하는 데 기초가 되기 위해 수행되었다. 선정된 세가지 브라켓은 A:Transcend(Unitek) B:Signatrue(RMO) C:PAW(Plane Arch Wire appliance)이었다. 철선은 0.0175x0.025스테인레스 스틸과 C형은 새롭게 고안된 마름모꼴 철선이 이용되었다. tipping force는 4.27N을 브라켓의 wire slot의 gingival wall의 mesial surface와 대각선으로 대칭되는 면에 각각의 node에 분력의 형태로 작용시켰다. torquing force는 couple force의 형태로 32.858N을 19.7도 회전하였고 bracket C형은 동량의 힘을 11.3도 회전하여 X와 Y의 방향으로 분력의 형태로 나누어 해석하였고 von Mises stress(최대상당응력)가 각 브라켓에서 기록되었다. 이에 다음과 같은 결론을 얻었다. 첫째, 유한요소 해석을 통해 브라켓과 wire slot을 실제로 제작하지 않고도 각각의 재료에 따른 응력분포를 예측할 수 있었다. 둘째, 응력의 집중부위는 Tipping시 브라켓 A,B,C 모두 유사하게 나타났는데 브라켓 wire slot의 gingival wall과 mesial surface가 만나는 부위와 wire slot의 incisal wall과 distal surface가 만나는 부위였다. Torquing시 wire solt의 길이방향을 따라 넓게 분포되었고 gingival wall과 협면으로 이행되는 모서리 그리고 incisal wall내면에 집중되었다. 셋째, 브라켓에 작용하는 응력은 Tipping에 의한 것보다는 Torquing에 의한 영향이 더 큼을 알수 있었으며 Torquing force를 기준으로 브라켓을 설계하는 것이 바람직한 것으로 판단되었다. 넷째, 브라켓의 형상과 함께 재료의 변화가 응력감소에 영향을 미치는 것으로 사료되므로 브라켓 제작시 한가지 재료보다 응력이 많이 받는 부위는 다른 재료를 사용하여 응력의 분포를 줄일수도 있음을 알수있었다. 다섯째, 사용하기에 용이하고 운용이 효율적일 것으로 판단되는 브라켓C형(PAW브라켓)은 응력집중현상이 다른 두 브라켓보다 크게 나타났으므로 이의 제작시 기계적 성질이 우수한 재료를 사용해야 할 것으로 사료되었다. The aim of this study were to measure and compare the stress level on three type brackets and each other material(stainless steel, ceramic) with tipping and troquing forces by using the finite element analysis and to design biomechanically favorable brackets. For this study, three kinds of brackets were selected(A:Transcend-RMO, B:Signatrue-Unitek C:PAW:plane archwire appliance-applied for a patent in Yonsei University). The slot size of bracket was 0.022inch and the size of archwire was 0.0175x0.025inch and taper shaped archwire was used in PAW. Loading force in tipping was 4.27N and torquing force was 32.858N applied by archwire torsion with 19.7degree and 11.3 degree in C type bracket. The conclusions were that (1)The finite element method proved to be a useful tool in the stress analysis of orthodontic bracket subjected to various forces. (2)With tipping, the stresses were concentrated at the gingival wall of the wire slot where it meets the mesial bracket surface and the incisal wall of the wire slot where it meets the distal bracket surface and with torquing, the stresses were concentrated at the junction of the gingival or incisal wall and base of the slot. (3)The maximum stress value was higher in torquing force than tipping force and therefore it is desirable to design on the basis of torquing force. (4)It was considered that the change in material might be affect on the diminish of stress value in the place of stess concentration. (5)The maximum stress value was highest on PAW bracket when the tipping and torquing force was applied and therefore it would be desirable to use mechanically favorable material on PAW bracket.

외상성 골 낭과 동반한 개화성 백악-골 이형성증

강대석 ( Dae Seok Kang ) , 손홍범 ( Hong Beom Sohn ) , 김창우 ( Chang Woo Kim ) 조선대학교 구강생물학연구소 2003 Oral Biology Research (Oral Biol Res) Vol.27 No.2

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인공치아 매식에 관한 임상적 연구

이정구,손홍범,이동주,홍광진,민병진 한림대학교의료원 1993 人間科學 Vol.17 No.1

변연성 발육성 치아종 : A Case of Peripheral Developing Odontoma

윤정훈,임경수,손홍범 조선대학교 구강생물학연구소 2003 Oral Biology Research (Oral Biol Res) Vol.27 No.1

A peripheral odontoma is a relatively rare lesion and is thought to represent the soft tissue counterpart of the central or intraosseous odontoma. Although several odontogenic tumors can occur peripherally, only a few cases of peripheral odontomas involving the gingival tissues have been reported. No earlier stage of peripheral odontoma or peripheral developing odontoma has been described. Here, we report a case of a peripheral developing odontoma occurring in the gingiva of a 4-rear-old Korean boy. Microscopic sections showed several nodules of developing rudimentary tooth germ-like structures in the gingival tissue. It seems likely that this case arise from remnants of the dental lamina located in the gingiva, since the clinical and histologic presentation lends support to the peripheral origin of this tumor.

Health-Care 시스템을 위한 센서 인터페이스 연구

송성근(Sung-Gun Song),손홍범(Hong-Bum Son),박성모(Seong-Mo Park) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7

In this paper we describe the bio-sensor interface and driver program for Health-Care system. The proposed Health-Care system has ARM9 embedded processor and eight channel sensor input to measure various bio-signals. It has user convenient interface using 320X240 TFT-LCD and touch-screen and Bluetooth wireless communication module. For hardware platform, we used the Excalibur device that has ARM922T processor and APEX20 FPGA area on a chip. As for software development, we use ADS(Arm Developer Suite). Driver programing running under real-time OS uC/OS-Ⅱ.

안면 비대칭의 평가를 위한 기준에 관한 정보 두부 방사선 계측학적 연구

백선호,안병근,김선해,손홍범,한호진,강수만 대한치과교정학회 1993 대한치과교정학회지 Vol.23 No.1

This study was undertaken to investigate the middle having the least difference between the right and left structures among the lines that had been used in the study of the craniomaxillofacial asymmetry. The sample of this study consisted of twenty six Korean girls(average 18.9 years old) having normal facial appearance and occlusion. On the frontal cephalometric films of the sample, we divided the whole craniomaxillifacial area into four portions, i.e., cranial, upper facial, lower facial, and dental portion. So, we have found the midlines having the least difference in the whole craniomaxillofacial area itself, and in the each divided four portions, furtherly in the other portions from aimed portion. The findings were as follow : 1. In the whole craniomaxillofacial area, the connecting line between crista galli and anterior nasal spine and the perpendicular bisecting line between right and left foramen rotundrums were suitable for the midline. 2. In the cranial portion, established all six lines were suitable for midlines. In the other portions, the perpendicular bisection line between both condylion, the line passing the contact point between right and left mandibular central insisiors among the perpendicular lines between right and left mandibular central incisial tips were suitable midlines for evaluating the asymmetry of cranial portion. 3. In the upper facial portion, the perpendicular bisecting line between right and left zygions was the most suitable midline. In the other portions, the line between the crista galli and the most superior point of the odontoid process, the perpendicular bisecting line between right and left gonions, the perpendicular bisecting line between right and left condylions, and perpendicular bisecting line between right and left foramens rotundum were suitable midlines for evaluating the asymmetry of the upper facial portion. 4. In the dental portion, the perpendicular bisecting lines between right and left buccal cusps of both maxillary first molars and between right and left mandibular first molars were suitable midlines. In the other portions, the perpendicular bisecting line between right and left landmarks crossing the lesser wing of the connecting line between crista galli and prosthion were suitable midlines for evaluating the asymmetry of dental portion. 5. In the lower facial portion, the perpendicular bisecting lines between right and left condylions and between right and left gonions were suitable midlines. In the other portions, the line between the crista galli and anterior nasal spine, the perpendicular bisecting line between right and left foramen rotundums, and the perpendicular bisecting lines between right and left buccal cusps of both mandibular first molars and between right and left maxillary first molars were suitable midlines for evaluating the asymmetry of the lower facial portion.

자활사업 참여자 가구의 재무건전성 분석

장동호(Jang, Dong-Ho),손홍범(Son, Hong-Beom) 한국사회복지학회 2020 한국사회복지학 Vol.72 No.3

지난 10여 년간 빈곤층의 가계 재무역량강화를 위한 프로그램들이 자활사업 현장을 중심으로 확산되고 있다. 하지만, 정작 이들의 가계 재무건전성이 어떠한지를 알려주는 전국단위의 경험적 연구는 없다. 이에 이 연구는 소비자학에서 보편적으로 쓰이는 재무비율 지표를 이용하여 우리나라 자활사업 참여자 가구의 재무건전성을 탐색하였다. 분석자료는 2019년 전국의 자활사업 참여자 1,047명이 참여한 설문조사 결과였으며, 분석에 사용한 재무비율은 가계수지비율, 유동성비율, 총부채상환비율이었다. 주요 분석결과는 다음과 같다. 첫째, 가계수지비율의 가이드라인 1.0 미만과 0.9 미만을 충족한 가구는 각각 68.0%, 45.5%였다. 기혼, 다가구원, 채무불이행, 고학력, 중년 가구주 가구의 가계수지비율이 특히 좋지 않았다. 둘째, 유동성비율의 가이드라인 200% 이상과 300% 이상을 충족한 가구의 비율은 각각 12.4%, 9.0%였다. 평균적으로 모든 집단에서 유동성비율 충족률이 낮은 가운데, 특히 월세거주, 채무불이행, 남성가구주 가구의 유동성비율 충족률이 낮았다. 셋째, 총부채상환율 가이드라인 15% 미만(주택담보대출 제외)과 40% 미만(주택담보대출 포함)을 충족한 가구의 비율은 각각 88.4%와 95.9%였으며, 채무불이행, 이혼, 고학력가구의 총부채상환비율이 상대적으로 나빴다. 이상의 분석결과는 자활연구에서 재무건전성 개념의 적극적 활용, 그리고 자활현장에서 재무역량강화사업, 자산형성지원사업, 채무조정지원 사업의 확대, 자활사업 종사자의 재무역량 강화를 위한 효과적인 교육과정 개발이 필요함을 시사한다. Over the past decade, financial capability building programs for the poor have been spreading in the field of self-sufficiency. However, there has been no empirical study at the national level to describe what their household financial soundness is like. This study analyzed the financial soundness of households in self-sufficiency programs, using financial ratio indicators. The data used in this study were collected in 2019 with a nationwide survey in which 1,047 participants from self-sufficiency programs participated. The main results were as follows. First, 68.0% and 45.5% of the households met the guidelines of 1.0(or below) and 0.9(or below) respectively with the household income-expenditure ratios. The households with married couples, large family members, financial default, and higher education showed the worst ratios. Second, the proportion of households meeting the liquidity ratio guidelines of 200%(or higher) and 300%(or higher) were 12.4% and 9.0%, respectively. Overall, it was found that in all groups, the ratio of liquidity ratios was low, particularly in households with monthly rent, financial default, and male household heads. Third, the proportions of households that met the debt-to-income(DTI) guidelines 15(or below) if mortgage loans were excluded and 40(or below) if mortgage loans were included were 88.4% and 95.9% respectively. The ratios of DTI were especially low among households with financial default, divorce, and higher education. Based on these results mentioned above, this study suggests the wide use of the concept of financial soundness in poverty research, and the expansion of financial capability building, asset building, and debt reduction services, financial capability training for professionals in the field of self-sufficiency.

64채널 디지털 신호발생/논리분석기의 구현

이창수(Chang-su Lee),손홍범(Hong-bum Son),손창훈(Chang-hun Son),정재욱(Jae-wook Jung),박성모(Seong-mo Park) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11

This paper describes an Implementation of 64 channel Signal generator/Logic analyzer that is useful for verification and test of digital circuits. Hardware simulation guarantee more reliable test and fast operation s야ed than software simulation. And It can solve a synchronization problem, because this device can perform as a Signal generator and Logic analyzer at the same time.