• Journal of Korean Orthopaedic Sports Medicine
• /
• v.2 no.2
• /
• pp.163-167
• /
• 2003

Purpose: The purpose of this study is to describe causes and injury mechanisms during inline skating and to find preventive measures .Materials and Methods: We have carefully selected 57 patients who have been treated in our hospital and nearby hospital. There are 37 males and 20 females, and mean age is 9 years 9 months (range,6-40 years old) . We have meticulously investigated their injured sites, their favorite location for inline skating , their use of protective means while they were on the wheels and their injury mechanisms . Results: Injury consisted of 50 fractures,1 meniscal tear,2 medial collateral ligament rupture and 4 contusion or sprain. Fracture sites varied as follows : 33(66$\%$) cases in distal radius and ulna,5(10$\%$) in elbow. 3(6$\%$) in diaphysis of humerus, etc Location at the time of injury varied as follows : 22 cases(39$\%$) in their apartment complex, 19 cases in (33$\%$) narrow streets, and 16 cases(28$\%$) in parks Only five patients admitted that any means of protection were used.2 cases only had knee pad on , 1 case put on elbow pad in addition, and 2 cases put on wrist guard as well. However none of the patients had helmet on Conclusion: We would strongly like to stress the importance of using sufficient protections and of choosing area where it is safe to ride, in order to reduce the risk of accidents. In addition, continuous and effective prior education from inline skate circles may be in order before riding the inline skate.

• Proceedings of the Korean Information Science Society Conference
• /
• 2010.06b
• /
• pp.212-215
• /
• 2010

본 논문은 카메라 영상을 통해 사용자의 손동작을 인식하여 가상의 물체를 증강시키는 인터페이스를 제안한다. 사용자는 영상의 일부를 원형으로 그려주는 특정한 손동작을 취하여 영역을 선택하고 시스템은 이를 인식하여 물체를 증강 시킨다. 손동작을 인식하기 위하여 먼저 손 외곽선을 찾아낸 후, 찾아낸 외곽선의 곡률을 계산하여 손가락의 위치를 알아낸다. 알아낸 손가락의 상대적인 위치와 개수를 이용하여 손동작을 구분한다. 또한 적은 연산량으로도 안정적으로 물체를 증강 시킬 수 있도록 이전 프레임에서 자세추정에 사용된 특징점들을 이용하여 현재 프레임에서 필요한 인라이어를 찾아 낼 수 있는 방법을 제시한다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2004.10a
• /
• pp.625-627
• /
• 2004

최근 들어 인터넷의 발달과 더불어 PDA, 핸드폰과 같은 모바일 디바이스와 다양한 정보가전용 기기들에 네트워크 기반의 자바기술이 적용되고 있으며, 이러한 자바 기술을 사용함으로써 플랫폼 독립성 이식성, 보안성, 이동성 둥의 장점을 얻을 수 있다. 그러나, 자바로 작성된 응용프로그램은 C, C++로 작성된 응용프로그램 보다 수행속도가 느리다는 단점이 있다. 이러한 문제점을 해결하기 위해서는 자바가상머신의 성능향상이 필수적이다. 지금까지 메모리 관리를 위한 가비지 컬렉션, 소프트웨어나 하드웨어를 이용한 바이트 코드 변환, 인라인캐시(inline-cache)를 사용한 접근 속도 향상 등 많은 부분에서 활발한 연구가 진행되고 있다. 본 논문에서는 모바일 플랫폼에서 동작하는 KVM(kilo-virtual machine)의 성능향상을 위한 쓰레드 구조를 분석하고 설계한다.

• Journal of the Korean Academy of Clinical Electrophysiology
• /
• v.6 no.1
• /
• pp.91-101
• /
• 2008

The purpose of this study was to investigate the effects of Inline-skating exercise on the static balance. Total 10 subjects with common were recruited from university for student in Kwangyang, and the Inline-skating exercise was conducted 3times at a week during 2 weeks. Balance test was measured by using Good Balance with overall index, NSEO(normal standing when eye open), NSEC(normal standing when eye close), OLREO(one leg right standing when eye open), OLREC(one leg right standing when eye close), OLLEO(one leg left standing when eye open), OLLEC(one leg left standing There was statistically significant difference of the balance ability of the left-right only between the before and the after exercise in the case of NSEO position. however, the statistically difference was not found in terms of the Mean X speed, Mean Y speed, Velocity moment between the before and the after exercise in the case of NSEC position. There was statistically significant difference of the balance ability of the Mean X speed, Mean Y speed between the before and the after exercise in the case of OLLEO and OLLEC position, however, the statistically difference was not found in terms of the Velocity moment between the before and the after exercise in this case. There was statistically significant difference of the balance ability of all the terms between the before and the after exercise in the case of OLREO. however, the statistically difference was not found in terms of the Mean Y speed only between the before and the after exercise in the case of OLREC. In this case, the statistically difference was found in terms of Velocity moment between the before and the after exercise. This study showed that Inline-skating exercise was effected on the improvement of the balance ability in normal peoples.

• Journal of Pharmaceutical Investigation
• /
• v.39 no.1
• /
• pp.29-36
• /
• 2009

Since the quality of final products is significantly affected by the homogeneity of powder mixture, the powder blending process has been regarded as one of the critical pharmaceutical unit processes, especially for solid dosage forms. Accordingly, the monitoring to determine a blending process' end-point based on a faster and more accurate in-line/on-line analysis has attracted enormous attentions recently. Among various analytical tools, NIR (near-infrared) spectroscopy has been extensively studied for PAT (process analytical technology) system due to its many advantages. In this study, NIR spectroscopy was employed with an optical fiber probe for the in-line monitoring of fluid-bed blending process. The position of the probe, the ratio of binary powder mixture, the powder size differential and the back-flush period of the shaking bag were examined as principal process parameters. During the blending process of lactose and mannitol powders, NIR spectra were collected, corrected, calibrated and analyzed using MSC and PLS method, respectively. The probe position was optimized. A reasonable end-point was predicted as 1,500 seconds based on 5% RSD value. As a consequence, it was demonstrated that the blending process using a fluid-bed processor has several advantages over other methods, and the application of NIRS with an optical fiber probe as PAT system for a fluid-bed blending process could be high feasible.

• Journal of the Korean Magnetics Society
• /
• v.25 no.3
• /
• pp.92-100
• /
• 2015

Electric Vehicle (EV) can be categorized by the driving method into in-wheel and in-line types. In-wheel type EV does not have transmission shaft, differential gear and other parts that are used in conventional cars, which simplifies and lightens the structure resulting in higher efficiency. In this paper, design method for in-wheel motor for automobiles using Parameter Map is proposed, and motor with continuous power of 5 kW is designed, built and its performance is verified. To decide the capacity of the in-wheel motor that meets the automobile's requirement, Vehicle Dynamic Simulation considering the total mass of vehicle, gear efficiency, effective radius of tire, slope ratio and others is performed. Through this step, the motor's capacity is decided and initial design to determine the motor shape and size is performed. Next, the motor parameters that meet the requirement is determined using parametric design that uses parametric map. After the motor parameters are decided using parametric map, optimal design to improve THD of back EMF, cogging torque, torque ripple and other factors is performed. The final design was built, and performance analysis and verification of the proposed method is conducted by performing load test.

• Child Health Nursing Research
• /
• v.8 no.4
• /
• pp.381-390
• /
• 2002

This study examines the factors that are associated with accidents from riding on inline skates and/or kick boards among students in the elementary schools. Data were collected from 902 students in 3 elementary schools in Seoul. Data were analyzed based on descriptive statistics and chi-square test. The results were as follows: 1. Thirty-eight percent of the students investigated were found to have kick boards while sixty-one percent of the students had inline skates. 2. The age of mothers who answered the questionnaires showed a statistically significant association with injuries of their children on inline skates and/or kick boards. Children whose mothers are younger had a lower percentage of injuries on inline skates and/or kick boards. 3. Children with a lower score on K-CBCL had a higher chance of having an accident from riding on inline skates and/or kick boards. That is, children with lack of attention were more likely to be involved in an accident. First-born children were less likely to have an accident. 4. While mothers' attitudes toward the safety of inline skates and kick boards appeared not to be associated with accidents of their children, their preventive actions for the safety related to riding on inline skates and kick boards reduced the chance to be involved in an accident of their children. In conclusion, this study shows that mothers with children going to the elementary schools should be more action-oriented to prevent their children's accidents from riding on inline skates and/or kick boards than merely recognizing the safety of inline skates and/or kick boards on their own. Implication of these findings and major findings of this study were discussed.

• Journal of the Korean Geophysical Society
• /
• v.2 no.3
• /
• pp.209-216
• /
• 1999

In order to get geologic information necessary for underground installation of water pipe, seismic refraction profiling was applied to the southwest side of the Seomjin River which flows between Namwon-gun, Cholabuk-do and Gokseong-gun, Cholanam-do. Before obtaining the in-line refraction data, walkaway data were recorded with 1 m geophone interval and -36∼+36 m offset range. From the walkaway data, it is interpreted that a dry soil layer with the average velocity of 585 m/s covers wet sediments with the average velocity of 1,326 m/s. The second layer overlies basements nearly horizontally with the average velocity of 4,218 m/s. Refraction profiling of 220 m long with the geophone interval of 2 m is interpreted with the Generalized Reciprocal Method (GRM). Three layers are identified with average velocities of 688 m/s, 1,473 m/s, and 3,776 m/s, respectively. The depth to the bedrock impossible for ripping ranges between two extremes, 1.51∼2.43 m and 2.25∼3.54 m, depending upon thickness of the hidden layer. A typical shortcoming of refraction method, the hidden layer problem, prevents accurate estimation in depth of the second layer.

• Journal of the Korea Society of Computer and Information
• /
• v.27 no.5
• /
• pp.215-224
• /
• 2022

The purpose of this study is to analyze how it affects functional movement and dynamic balance applying Czech get up exercise based on the principle of motor development of child for office worker women in 30s and 40s. Through random allocation, an Czech get up exercise group(n=15) and a control group(n=14) were formed to apply exercise for 12 weeks, 3 times a week, and 60 minutes a day, and the control group maintained daily life at the same period. As a result of the study, showed that Deep squat(p<.05), Hurdle step(p<.01), In-line lunge(p<.05), Trunk stability push-up(p<.001), Rotary stability (p<.01), Total score(p<.001), were significantly in the Czech get up Group, and Dynamic Balance of Lower Extremity(p<.001), Right Dynamic Balance of Lower Extremity(p<.001) were also significantly in the Czech get up Group. In conclusion, it is thought that Czech get up exercise based on the principle of motor development of child will have a positive effect on the functional movement and dynamic balance in office women, thereby increasing work efficiency as well as healthy life.

• Proceedings of the Korean Information Science Society Conference
• /
• 2007.06d
• /
• pp.489-494
• /
• 2007

침입방지 시스템(IPS, Intrusion Prevention System)은 인라인모드(in-line mode)로 네트워크에 설치되어, 네트워크를 지나는 패킷 또는 세션을 검사하여 만일 그 패킷에서 공격이 감지되면 해당 패킷을 폐기하거나 세션을 종료시킴으로서 외부의 침입으로부터 네트워크를 보호하는 시스템을 의미한다. 침입방지 시스템은 크게 두 가지 종류의 동작을 수행한다. 하나는 이미 알려진 공격으로부터 방어하는 시그너처 기반 필터링(signature based filtering)이고 다른 하나는 알려지지 않은 공격이나 비정상 세션으로부터 방어하는 자기 학습 기반의 변칙 탐지 및 방지(anomaly detection and prevention based on selflearning)이다. 시그너처 기반 필터링에서는 침입방지시스템을 통과하는 패킷의 페이로드와 시그너처라고 불리는 공격 패턴들과 비교하여 같으면 그 패킷을 폐기한다. 시그너처의 개수가 증가함에 따라 하나의 들어온 패킷에 대하여 요구되는 패턴 매칭 시간은 증가하게 되어 패킷지연 없이 동작하는 고성능 침입탐지시스템을 개발하는 것이 어렵게 되었다. 공개 침입방지 소프트웨어인 SNORT를 위한 여러 개의 효율적인 패턴 매칭 방식들이 제안되었는데 시그너처들의 공통된 부분에 대해 한번만 매칭을 수행하거나 한 바이트 단위 비교대신 여러 바이트 비교 동작을 수행함으로써 불필요한 매칭동작을 줄이려고 하였다. 본 논문에서는 패턴 매칭 시간을 시그너처의 개수와 무관하게 하기 위하여 시그너처 해싱 기반에 기반한 고성능 침입방지시스템을 제안한다.