경도인지 장애 평가 및 분석 시스템

최성훈,주문일,양영애,김희철,Choi, Sung-Hoon,Joo, Moon-Il,Yang, Yeong-Ae,Kim, Hee-Cheol 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.11

최근 인구 고령화가 급속히 진행되면서 치매인구가 빠른 속도로 증가하고 있다. 치매는 완벽한 치료법이 없기 때문에 경도인지 장애 평가를 통해 조기 발견하여 예방 훈련하는 것이 중요하다. 기존의 경도인지 장애 평가는 수기형태로 이루어지며, 피검자와 검사자의 1:1 대면 평가가 원칙이다. 이는 검사자의 피로도 증가와 이로 인한 평가오류의 가능성을 증가시킨다. 또한 도출된 데이터도 수기 형태이기에 다양한 방식으로 분석 및 활용하기에는 한계가 있다. 따라서 기존 방식의 제한점을 극복 수 있는 시스템화가 가능한 어플리케이션을 활용하여 평가하고, 그 결과를 저장 및 분석할 수 있는 시스템 개발이 필요하다. 본 논문은 경도인지 장애를 평가할 수 있는 피검자와 검사자용 어플리케이션과 평가 데이터를 저장 및 분석할 수 있는 시스템을 개발하고자 한다. As the aging society is accelerated, the population with dementia grows significantly faster. Because there is no complete cure of dementia, it is of great importance to detect the disease at a very early stage and prevent its fast aggravation through evaluation of MCI(Mild Cognitive Impairment) which happens before dementia. The current assessment of MCI conducts only in the form of hand-written data and by 1:1 face to face communication between the subjects and the examiners. Due to this, both examiners' fatigue rate and evaluation error rate increase. Further, there are some limitations in utilizing and analyzing data collected. Against the problems, therefore, there is a need to develop a computerized system by which MCI is assessed, and the results are saved and analyzed. This paper presents the development of such a system enabling MCI evaluation, its related data collection and analysis.

태백산(太白山) 광화대(鑛化帶) 중부지역(中部地域) 페그마타이트에 대한 지화학적(地化學的) 연구(硏究)

최성훈,지정만,Choi, Sung-Hoon,Chi, Jeong-Mahn 대한자원환경지질학회 1990 자원환경지질 Vol.23 No.1

This study has been carried out on the Pegmatites, Naedeogri Granites, Nonggeori Granites and Metasedimentary rocks in the middle area of Taebaeksan region to investigate the geochemical properties and possibility of productivity. Pegmatites are characterized by metamorphosed anatectic pegmatite and differentiated magmatic pegmatite, and are mixed type of rare-element pegmatite and mica-bearing pegmatite by the classification of Ginsburg(1979). The petrological type of the igneous rocks is thought to be calcalkali, subalkaline and peralumious. According to chemical variations against D. I., differentiation trends from Naedeogri and Nonggeori Granites through non-mineralized pegmatites to mineralized pegmatites are supposed. From the relationship between oxided and $SiO_2$, pegmatites and Nonggeori Granite have shown similar tendencies and bulk composition of pegmatites and similar to metasedimentary rocks near the intrusives. By judging the correlations of trace elements, it is elucidated that pegmatites adjacent to Naedeogri and Nonggeori Granites have been originated in magma differentiation from these granites and the others have been differentiated by remelting or partial melting from metasedimentary rocks. $Sp_5$, $Sp_8$, and $Sp_9$ pegmatites are considered as productive rocks, and $Sp_4$, $Sp_6$, $Sp_7$, $Sp_{10}$, $Sp_{11}$, and $Sp_{12}$ pegmatites and granites are supposed to have a weak productivity, in terms of element ratios related with Sn mineralizations. Tourmalines in productive pegmatites are formed under the circumstance of Li-poor granitoids and associated with pegmatites, and the others are seemed to be originated in metapelites and metapsammites which are not coexisting with an Al-saturating phase. Three types of chemical zoning are noticed in tourmalines: (1) apparently homogeneous compositional patterns, (2) a continuous core-to-rim zoning and, (3) a discontinuous core-to-rim zoning. From results of EPMA of tourmalines, Al, Mg and Ca increase closer to rim, while Fe decreases.

헬름홀쯔 적분 방정식에 기반을 둔 구조물의 음향방사 및 구조/음향 연성 수치해석

최성훈,Choi, Sung-Hoon 한국음향학회 2008 韓國音響學會誌 Vol.27 No.8

An alternative formulation of the Helmholtz integral equation derived to express the pressure field explicitly in terms of the velocity vector of a radiating surface is used to solve acoustic radiation and fluid/structure interaction problems. This formulation, derived for arbitrary sources, is similar in form to the Rayleigh's formula for planar sources. Because the surface pressure field is expressed explicitly as a surface integral of the surface velocity, which can be implemented numerically using standard Gaussian quadratures, there is no need to use BEM to solve a set of simultaneous equations for the surface pressure at the discretized nodes. Furthermore the non-uniqueness problem inherent in methods based on Helmholtz integral equation is avoided. Validation of this formulation is demonstrated for some simple geometries. 본 논문에서는 헬름홀쯔 적분 방정식에서 유도된 식을 이용하여 구조물의 표면 압력을 구조진동 성분에 대한 단순한 적분형태로 표현하여 음향방사 및 구조/음향 연성 문제를 수치적으로 푸는 방법에 대하여 다룬다. 이 식은 임의의 형상에 대하여 유도된 식으로 Rayleigh 식과 유사한 형태를 갖는다. 이 식을 이용하면 표면 압력을 구조물의 속도에 대한 단순 적분 형태로 나타낼 수 있기 때문에 경계요소법과 같이 연립방정식에 대한 행렬식을 풀 필요가 없다. 또한 헬름홀쯔 적분 방정식에 기반을 둔 다른 방법 들이 가지는 해의 유일성 문제도 갖지 않는 장점이 있다. 본 논문에서는 구형 셀에 대하여 수치해와 정해를 비교하여 제안한 방법의 타당성을 검증하였다.

인진삼물탕(茵蔯三物湯) 약침처리(藥針處理)가 백서(白鼠)의 간손상(肝損傷) 회부(回復)에 미치는 영향(影響)

최성훈,박희수,Choi, Sung-Hoon,Park, Hee-Soo 대한약침학회 1999 Journal of pharmacopuncture Vol.2 No.1

These studies were carried out to investigate the effect of Herbal-acupuncture with Inzinsammultang extract on the recovery from liver injury of rats. The liver injury of rats induced with 0.3ml/ea carbon tetrachloride. The Herbal-acupunture with Inzinsam multang extract solution inserted into corresponding focus of Kansu(BL18) in rats. In this study, SD-Rats(Sprague-Dawley) were divided into 4 groups ; Normal group (None treated group), Control-group(The group not treated after $CCI_4$-intoxication), Treated group; Example I-group(Saline-injected groups after $CCl_4$-intoxication) and Example II-group(Inzinsammultang-injected groups after $CCl_4$-intoxication). Through histological observation, Example II-group sho-ws that liver injury is weaker than Control group.(p<0.05) Biochemical assays for each serum enzyme activities of AST, ALT and LDH, levels of albumin, ${\gamma}$-GT, TG, total cholesterol were performed. The results were summarized as follows 1. AST(Aspartate aminotransferase) activity in serum significantly decreased in the Inzinsammultang-injected groups after $CCl_4$-intoxication. Inzinsammultang-injected groups after $CCl_4$-intoxication showed significantly higher AST activities, compared with the Saline-injected groups after $CCl_4$-intoxication.(p<0.05) 2. ALT(Alanine aminotransferase) activity in serum significantly decreased in the Inzinsammultang-injected groups after $CCl_4$-intoxication. The Inzinsammultang-injected groups after $CCl_4$-intoxication showed significantly higher AST activities, compared with the Saline-injected groups after $CCl_4$-intoxication(p<0.05) 3. Level of Albumin in serum significantly increased in the Inzinsarnmultang-injected groups after $CCl_4$-intoxication. 4. LDH(Lactate dehydrogenase) activities in serum significantly decreased in the Inzinsammultang-injected groups after $CCl_4$-intoxication.(p<0.05) 5. ${\gamma}$-GT(Glutamyl transferase) in serum significantly decreased in the Inzinsammultang-injected groups after $CCl_4$-intoxication(p<0.05) 6. As for the TG(Triglyceride) levels in serum, Inzinsammultang-injected groups after $CCl_4$-intoxication is no significant differences compared with the Saline-injected groups after $CCl_4$-intoxication.(p<0.05) 7. Total cholesterol in serum significantly increased in the Inzinsarnmultang-injected groups after $CCl_4$-intoxication.(p<0.05) Those results indicate that the Inzinsammultang Herbal-acupuncture have significant effects on the liver injury induced by $CCl_4$. So it is expected that the Inzinsammultang Herbal-acupuncture can be used to cure inflammations and recover the functions of damaged liver cells.

太白山 鑛化帶 中部地域 페그마타이트에 대한 地化學的 硏究

Sung Hoon Choi(崔成薰),Jeong Mahn Chi(池楨蔓) 대한자원환경지질학회 1990 자원환경지질 Vol.23 No.1

This study has been carried out on the Pegmatites, Naedeogri Granites, Nonggeori Granites and Metasedimentary rocks in the middle area of Taebaeksan region to investigate the geochemical properties and possibility of productivity. Pegmatites are characterized by metamorphosed anatectic pegmatite and differentiated magmatic pegmatite, and are mixed type of rare-element pegmatite and mica-bearing pegmatite by the classification of Ginsburg(1979). The petrological type of the igneous rocks is thought to be calcalkali, subalkaline and peralumious. According to chemical variations against D. I., differentiation trends from Naedeogri and Nonggeori Granites through non-mineralized pegmatites to mineralized pegmatites are supposed. From the relationship between oxided and SiO₂, pegmatites and Nonggeori Granite have shown similar tendencies and bulk composition of pegmatites and similar to metasedimentary rocks near the intrusives. By judging the correlations of trace elements, it is elucidated that pegmatites adjacent to Naedeogri and Nonggeori Granites have been originated in magma differentiation from these granites and the others have been differentiated by remelting or partial melting from metasedimentary rocks. Sp₅, Sp₈, and Sp₉, pegmatites are considered as productive rocks, and Sp₄, Sp₆, Sp₇, Sp₁₀, Sp₁₁, and Sp₁₂, pegmatites and granites are supposed to have a weak productivity, in terms of element ratios related with Sn mineralizations. Tourmalines in productive pegmatites are formed under the circumstance of Li-poor granitoids and associated with pegmatites, and the others are seemed to be originated in metapelites and metapsammites which are not coexisting with an Al-saturating phase. Three types of chemical zoning are noticed in tourmalines: (1) apparently homogeneous compositional patterns, (2) a continuous core-to-rim zoning and, (3) a discontinuous core-to-rim zoning. From results of EPMA of tourmalines, Al, Mg and Ca increase closer to rim, while Fe decreases.

양극 공급 기체의 성분비에 따른 고분자 전해질막 연료전지 성능평가

최성훈(Choi Sung Hoon),김민수(Min Soo Kim) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12

As commercialization issue of polymer electrolyte membrane fuel cell (PEMFC) has been rising, understanding its performance characteristic under various driving circumstances became important. In this paper, experimental study of PEMFC’s performance characteristic is evaluated by changing nitrogen and oxygen proportion at cathodic inlet gas under various conditions. Six types of cathodic inlet air are supplied, with different cathodic inlet flow rates and oxygen’s concentrations. In addition, four different working conditions are set, adopting two different temperatures and assuming whether cathodic inlet gas is humidified or not. Increasing the oxygen’s concentration, performance trends are differed compared with using ambient air driving situation. This shows that optimum driving condition can be changed depending on what types of cathodic fuel are utilized.

트래픽 분석 방법론 성능 향상을 위한 호스트 기반 분석 시스템

최성훈(Choi Sung Hoon),이현신(Lee Hyun Shin),윤성호(Youn Sung HO),김명섭(Kim Myung Sup) 한국통신학회 2010 한국통신학회 학술대회논문집 Vol.2010 No.11

Effect of osmotic pressure on hCTLA4-Ig production in transgenic rice cell suspension cultures

Sung-Hun Choi(최성훈),Song-Jae Lee(이송재),Ji-Suk Cho(조지숙),Kyoung-Hoon Lee(이경훈),Su-Hwan Cheon(전수환),Seok-Mi Hong(홍석미),Hye-Jin Hong(홍혜진),Dong-Il Kim(김동일) 한국생물공학회 2004 한국생물공학회 학술대회 Vol.2004 No.10

Effects of stabilizing agents on hGM-CSF production in suspension cell cultures of Oryza sativa L.

Sung-Yeon Joo(주성연),Kyung-Hoon Lee(이경훈),Sung-Hun Choi(최성훈),Seok-Mi Hong(홍석미),Su-Hwan Cheon(전수환),Dong-Il Kim(김동일) 한국생물공학회 2004 한국생물공학회 학술대회 Vol.2004 No.10

Bit-Slice 형 CPU 의 Next Address 제어부와 Branch 제어부의 설계

최성훈(SUNG HOON CHOI),류종필(JONGPIL RYOO),정호선(HO SUN CHUNG),이우일(WU IL LEE),곽명신(MUNG SIN GUAC),유영욱(YOUNG UG YU) 대한전기학회 1987 대한전기학회 학술대회 논문집 Vol.1987 No.7