USN기반의 외부인 출입감시시스템 설계 및 구현

이규수,심현,오재철,Lee, Kyu-Su,Sim, Hyeon,Oh, Jai-Cheol 한국전자통신학회 2012 한국전자통신학회 논문지 Vol.7 No.5

최근 외부인들이 초등학교에 침입하여 학생들을 납치하는 문제가 심각하게 다루어지고 있다. 특히 저학년 학생들은 이러한 위험에 더욱 취약한 상태이다. 이러한 불법침입자의 출입을 통제하는데 대다수 초등학교들은 많은 한계를 가진다. CCTV 및 통제시스템 등 보안시스템 구축과 감시로 출입통제 관리를 위하여 다수 인력이 필요한 문제점이 발생한다. 본 논문에서는 불법침입자들의 이동성 제어를 위한 출입감시 관리를 위해서 USN 기술의 핵심인 센서 네트워크와 PTZ카메라를 이용하여 외부인 출입감시제어시스템을 설계하고 구현 하였다. Latest, it is dealt with seriously problems that an intruder kidnapping students in elementary school. Especially young students is more vulnerable in these risks. Elementary School has many limitations in controlling the intrusion of trespassers. A problem occurs that requires a lot of manpower through the deployment and management of security systems such as CCTV and control systems. In this paper, we is designed and implemented the outsider access management system using a sensor network and PZT camera called the USN's core technology to monitoring the access control for controlling the mobility of the trespassers.

학습자 트레이싱을 통한 원격 교육용 자가 진단 모듈 개발

이규수,손철수,박홍준,심현,오재철,Lee, Kyu-Su,Son, Cheol-Su,Park, Hong-Joon,Sim, Hyun,Oh, Jae-Chul 한국정보처리학회 2012 정보처리학회논문지 A Vol.19 No.3

창의력이나 문제해결력과 같은 고차원적인 사고 능력은 주어진 문제의 정 오답만으로는 진단이 어려우며, 진단을 위해서는 교수자가 학습자의 문제 해결 과정을 지켜보거나 해결 과정에 대한 학습자의 보고 과정이 요구된다. 더구나 교수자의 학습자에 대한 관찰이 불가능한 온라인 학습이나 버추얼 클래스와 같은 환경에서는 학습자의 문제 해결 과정을 평가하거나 학습자 스스로 자신의 부족한 부분을 진단하는 것은 더욱 어려워진다. 이러한 문제를 해결하는 최선의 방법은 학습자가 문제를 해결하는 동안을 추적하여 그 과정을 보고해 주는 것이라 할 수 있다. 본 연구에서는 MS 오피스군의 소프트웨어를 활용하여 주어진 문제를 해결하는 동안 학습자의 작업 내역을 트레이싱하여 최종적으로 학습자에게 자신의 부족한 부분을 진단해 주고 자신의 능숙도와 소프트웨어를 응용하여 주어진 문제를 해결하는 과정에 대한 평가를 해주는 모듈을 개발하였으며, 본 진단 모듈의 효용성 평가를 위하여 실제 MOS 시험을 준비하는 학습자 81명에 대한 적용 및 만족도 조사를 통하여 통계적으로도 유의미한 효과가 있음을 확인하였다. The higher thinking skills, such as creativity and problem-solving about a given problem, are difficult to assess and diagnose. For an accurate diagnosis of these higher thinking abilities, we need to fully observe learner's problem-solving process or learner's individual reports. However, in an online learning or virtual class environments, evaluation of learner's problem-solving process becomes more difficult to diagnose. The best way to solve this problem is through reporting by tracking learner's actions when he tries to solve a problem. In this study, we developed a module which can evaluate and diagnose student's problem-solving ability by tracking actions in MS-Office suite, which is used by students to solve a given problem. This module performs based on the learner's job history through user tracking. To evaluate the effectiveness of this diagnostic module, we conducted satisfaction survey from students who were preparing the actual MOS exams. As a result, eighty-one (81) of the participants were positive on the effectiveness of the learning system with the use of this module.

1.5T BRAIN MRI검사에서의 작동제어모드를 통한 두부 SAR측정과 변화인자에 관한 고찰

이규수(Kyu-Su Lee),심현(Hyun Sim),문지훈(Ji-Hoon Moon),오재철(Jae-Cheol Oh) 대한전기학회 2007 정보 및 제어 심포지엄 논문집 Vol.2007 No.4

MRH(n)의 해밀톤 경로 분석

이규수(Kyu-Su Lee),김성길(Sung-Gil Kim),심현(Hyun Sim),오재철(Jae-Chul Oh) 한국멀티미디어학회 2010 한국멀티미디어학회 학술발표논문집 Vol.2010 No.2

선형 배열 구현이나 멀티캐스팅과 같은 여러 응용에서 활용된다. 본 논문에서는 하이퍼큐브의 분지수와 지름을 동시에 줄인 새로운 연결망인 MRH(n)의 해밀톤 사이클에 대해서 분석한다. MRH(n)은 널리 알려진 상호 연결망인 하이퍼큐브에 비해 분지수와 지름이 작은 값을 갖는 연결망이다. 해밀톤 경로는 네트워크 토폴로지를 하나의 사이클로 구성하여 어느한 링크가 손상되더라도 복구가 가능한 방법들이 제시되는 데 활용하고 있다.

1.5T BRAIN MRI검사에서의 작동제어모드를 통한 두부 SAR측정과 변화인자에 관한 고찰

이규수(Kyu-Su Lee),심현(Hyun Sim),문지훈(Ji-Hoon Moon),오재철(Jae-Cheol Oh) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4

Magnetic Resonance Imaging(MRI) has become a very widely used medical procedure. Closed and open systems are typically used with static magnetic fields at or below 2 Tesla. Whole body SAR(specific absorbsion rate) is the value of SAR averaged over the entire body of the patient over any period of 15 minutes. Head SAR is the value of SAR averaged over the head of the patient for any period of 10 minutes. SAR is a measure of the absorption of electromagnetic energy in the body (typically in watts per kilogram (W/㎏)). The normal operating mode comprises values of head SAR not higher than 3 W/㎏. The second level controlled operating mode comprises values higher than 3 W/㎏. Current FDA guidance limits the SAR in the whole body. including the head to a range of 1.5 to 4.0 W/㎏, depending on the patient's clinical condition. SAR limit restrictions are incorporated in all MRI systems. and domestic's guidance limits the SAR in a part body, including the head to 3.2w/㎏ and less. The purpose of this study is to evaluate on change of head SAR in using MRI pulse sequence and to check if exceed 3.2(w/㎏) level in domestic a part exposure through measured head SAR. 23 patient's the average head SAR of pulse sequence is that T2WI sagittal is 0.5375. T2WI axial(FSE) is 0.4817. T1WI axial(SE) is 0.8179. FLAIR axial is 0.4580, GRE axial is 0.0077. Diffusion is 0.0824w/㎏. The head SAR exposed per patient was proved 2.3845w/㎏ less than the international standard. Coefficient of correlation for the relations body weight and SAR or for the relations ETL(echo train length) and SAR is 1 value. Coefficient of correlation for the relations between TR(time to repeat) and SAR is -0.602 value. so SAR increased relative to weight body and ETL. But the relations between TR and SAR is negative definite.

50세 이상 한국 성인에서 비만과 부갑상샘호르몬의 관련성

이규수(Lee, Kyu Su),윤요상(Yoon, Yo Sang),윤현(Yun, Hyun) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.6

본 연구는 국가자료인 2011년도 국민건강영양조사 자료를 이용하여 50세 이상 성인에서 비만이 PTH에 미치는 영향 을 평가하고자 실시하였다. 조사 참여자수는 8,518명이었고, 이중 50세 이상 성인 3,305명을 최종분석 대상자로 하였다. 본 연구의 주요결과는 PTH 평균값에 영향을 주는 관련변수(연령, 성별, SBP, DBP, 25(OH)D)를 보정 후, 정상군 (BMI, <23.0 kg/m2; 66.25±0.89 ng/dL)에 비하여 과체중군(BMI, 23.0-24.9 kg/m2; 67.83±1.07 ng/dL), 비만군(BMI,≥25.0 kg/m2; 70.71±0.94 ng/dL)의 PTH 평균값이 유의하게 증가하였고(p=0.003), Non-abdominal obesity군(66.63±0.74 ng/dL)에 비하여 Abdominal obesity군(69.30±0.80 ng/dL)의 PTH 평균값이 증가하였다(p=0.017). 결론적으로 비만과 복부비만은 PTH의 증가와 관련이 있다. The present study was conducted to assess the relationship between obesity and abdominal obesity and Parathyroid hormone (PTH) in adults aged 50 or older (n=3,305) using 2011 Korean National Health and Nutrition Examination Survey (KNHANES) data, which represents national data in Korea. Key study results were as follows: First, the PTH levels increased significantly with an increase in Body mass index (BMI) (p=0.003), shown by sIAD levels after adjusted the variables that affect sIAD levels (age, gender, SBP, DBP, and 25(OH)D). These were 66.25±0.89 ng/L for Normal weight (BMI, <23.0 kg/m2), 67.83±1.07 ng/L for Overweight (BMI, 23.0-24.9 kg/m2), 70.71±0.94 ng/L for Obesity (BMI,≥25.0 kg/m2). Second, the PTH level of abdominal obesity group (69.30±0.80 ng/L) was significantly higher (p=0.017) than non-abdominal obesity group (66.63±0.74 ng/L). In conclusion, BMI and waist measurement are positively associated with the PTH levels in Korean adults.

전산화 단층촬영 검사시 비이온성 조영제 부작용과 환자 병력, 설문을 중심으로

은성종 ( Sung Jong Eun ),이규수 ( Kyu Su Lee ),동경래 ( Kyung Rae Dong ) 조선대학교 공학기술연구원 2011 공학기술논문지 Vol.4 No.3

The aim of this study was to evaluate the side effects of contrast medium and the related factor for patients taken contrast-enhanced CT in an university hospital. Total 5743 cases were included in this study. About 50~150 ml of 300 mg I/ml non-ionic contrast medium was administered intravenously at the dose of ``2~2.5 ml/kg body weight at the flow rate of 1-5 ml/sec. A questionnaire about the previous history of eight major disease were given to the patient or the guardian before the CT scanning. In 5743 subjects, men are 3273 (57.0%) and women are 2470 (43.0%). The most common disease history was hypertension (34.4%) followed by diabetes (28.6%), asthma (14.1%), heart disease (13.6%), allergy or urticaria (4.2%), kidney disease (2.5%), and drug side effect (1.5%). In univariate analysis, the multiple disease history were related to higher incidence of side effects. The study revealed that allergy or urticaria, and drug side effect history were associated with higher incidence of side effects on enhanced CT.

체간 중심 안정화 운동이 유도 선수의 균형 능력에 미치는 영향

전재근 ( Jai Geun Jeon ),이규수 ( Kyu Su Lee ),김윤환 ( Yun Hwan Kim ),동경래 ( Kyung Rae Dong ) 조선대학교 공학기술연구원 2011 공학기술논문지 Vol.4 No.4

The purpose of this study was to investigate the effects of the trunk core stability exercise and their balance ability of Judo players. The measurements of the balance ability were completed by fifteen subjects within six weeks, from June to July 2010. The trunk core stability exercise was carried out by self-exercises suggested by William. The exercise was practiced once a day, three times a week in same condition. By using the good balance system, the static and dynamic balance abilities were assessed with four position and two items, respectively. The results of this study were a follows: 1. Statistically significant differences in the Mean X speed, Mean Y speed and Velocity moment between before and after exercise in the case of OLLEO, OLREC and OLLEC. 2. Statistically significant differences in the Mean X speed and Mean Y speed between before and after exercise in the case of dynamic stability type 1 and type 2.

공정제어 출하 자동화 시스템을 위한 Graphic LCD Device Driver 설계 및 구현

정병채(ByungChae Jung),심현(Hyun Sim),이규수(Kyu-Su Lee),오재철(Jae-Cheol Oh) 대한전기학회 2007 정보 및 제어 심포지엄 논문집 Vol.2007 No.4

석유화학 공정에 적용하기 위한 산업프로토콜 개선방법 연구

심현(Hyun Sim),문지훈(Ji-Hoon Moon),이규수(Kyu-Su Lee),오재철(Jae-Cheol Oh) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4

The research degined model which was integrated Cache technical for improvement of modebus protocol. The mode bus it leads and it does not solve in existing to shorten the tank data computing time. It desigine the algorithm which discriminates the shift time of the petrochemistry process tank in following. It is an objective of dissertation.