• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.119-126
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• 2019

This study was conducted to investigate the effects of task oriented training on motor and cognitive function recovery in rats with induced Alzheimer's dementia. Thirty Sprague-Dawley rats were randomly assigned to a control group (n=15) and an experimental group (n=15). Training was given three times a week, for 20 minutes a session for 4 weeks. The cognitive and motor functions of the rats were evaluated by an eight arm radial maze test and ladder rung walk test. The eight arm radial maze test showed significant differences between groups according to the time of day 14 and 28 (p<.001). The difference in measured values according to the timing of the two groups was significant (p<.001). Additionally, there was a significant difference between the time and the group interaction (p<.001). The ladder rung walk test showed significant differences between groups according to the time of day 14 and 28 (p<.001). The difference in the measured values according to the timing of the two groups was significant (p<.001), and there was a significant difference between the time and the group interaction (p<.001). As a result, task oriented training for Alzheimer's dementia rats was found to have a positive effect on recovery of motor and cognitive function.

• Journal of the Korean Applied Science and Technology
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• v.39 no.1
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• pp.96-107
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• 2022

The purpose of this study was to demonstrate the effects of 8weeks Kettlebell training on the FMS and Balance in Middle school baseball player. Fourteen middle school baseball players were randomly assigned to a kettlebell group (n=8) and a control group (n=6), and kettlebell training was applied twice a week for 60 minutes. And the FMS, Y-balance test and static and dynamic balance test using smart shoes were tested before and after kettlebell training. Repeated two-way ANOVA measures was performed both before and after the exercise to verify the effect of kettlebell training. Also, if there was an interaction between time and group, a paired sample t-test was performed for each group. As a results of the study, FMS score showed a significant difference in IL (Inline Lunge) and TS(Total Score), and there was no significant difference in other variables of FMS. The YBT score showed a significant difference in all YBT variables except for the left AT. And the balance test using smart shoes, there was no significant interaction effect between group and period in all variables. In conclusion, it was found that the application of kettlebell training in middle school baseball players had an effects on the FMS and YBT scores related to functional movement and functional balance, but it did not affect the static/dynamic balance test using smart shoes evaluated by the foot pressure method. It seems that the results of this study can be provided as basic data necessary for planning a training program for middle school baseball players.

• Journal of the Korean Applied Science and Technology
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• v.41 no.3
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• pp.705-720
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• 2024

This study randomly assigned 24 middle-aged women to determine the effect of a 12-week combined exercise program on cardiovascular function and electrocardiogram-based ST segment and QRS in obese middle-aged women. Analysis of the results was conducted to verify differences within groups and between periods and groups. In terms of cardiovascular function, myocardial oxygen consumption showed a significant decrease in the experimental group during the resting phase and the highest intensity phase during exercise, and an interaction between group and period at rest was also observed. The heart rate recovery rate showed a significant decrease in the experimental group at 2 minutes of recovery, while in the control group, on the contrary, a significant increase was observed. The experimental group showed a significant decrease in systolic blood pressure, and an interaction between group and period was also observed. There was no change in diastolic blood pressure in both the experimental and control groups, and there was a statistically significant decrease in pulse pressure only in the experimental group at the 3-minute recovery stage. In the case of the electrocardiogram, the QRS height in the experimental group showed a significant increase in most cases at rest and at 3, 6, and 9 minutes during the recovery period, while there was no significant difference in the QRS period in both the experimental and control groups, and the ST segment height was significantly increased at rest in the experimental group. appeared to have increased. Therefore, summarizing the results of this study, it is believed that the 12-week combined exercise program has a positive effect in improving cardiovascular function, ventricular contractility in electrocardiograms, and myocardial ischemia in obese middle-aged women.

• Aerospace Engineering and Technology
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• v.4 no.1
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• pp.247-259
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• 2005

The interactions of natural atmospheric electricity with aircraft reveals many flight safety problems. It is estimated that on average, each commercial airplane is struck by lightning more than once each year. Thus the lightning strike to aircarft poses an appreciable threat to flight safety. Upset or damage of electrical and electronics equipment by the induced voltages is defined as indirect effect. The protection of aircraft electronics from the indirect effects of lightning can be accomplished first by determining the specific threats to the aircraft and systems contained within, and second, by designing protection methods to the aircraft components.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.412-414
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• 1998

대규모의 분산 응용시스템은 일반적으로 다수의 구성요소로 이루어져 있으며, 그 구성요소간의 상호작용을 위해 필요한 이벤트의 전달 구조가 다소 복잡한 특성을 지닌다. 이러한 이벤트의 다중처리 문제는 나이도가 높은 구현기법 중 하나이므로, 보다 안정적인 분산 응용시스템을 효율적으로 개발하기 위해서는 이벤트의 다중처리를 위한 기반 시스템을 제작, 지원하는 것이 바람직하다. 본 논문에서는 Java에서 분산객체개념을 도입한 JavaRmi환경에서 이벤트의 체계적인 다중처리를 위한 서비스를 설계함으로써, Java개발자가 보다 안정적이고 효율적인 방법으로 분산응용시스템을 구축할 수 있도록 지원하기 위한 방법을 제안하고자 하였다. 본 논문에서는 제안한 JavaRmi이벤트 서비스 시스템은 JavaRmi를 기반으로 하여, JavaRmi시스템이 지닌 효율성과 대중성의 잇점을 충분히 활용할 수 있도록 설계되었다. 이러한 기본적인 잇점 이외에도 이벤트 서비스의 설계에 있어서 직관적인 인터페이스, 그룹별 이벤트 서비스의 생성과 관리 기능. 병행성과 동기화 도구 등의 기능을 추가하여, 분산 응용시스템의 개발시 자주 요구되는 이벤트 처리를 위한 Java 개발자의 노력을 최소화할 수 있도록 지원하고자 하였다.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.529-531
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• 1998

본 논문은 매우 크고 복잡한 실시간 소프트웨어(SW)의 성질들을 이해하기 위한 방법론을 제시한다. 실시간 SW는 일반적으로 상호작용이 많은 프로세스들을 대량으로 가진 수십만에서 수백만 줄의 코드로 구성되어 있다. 이런 SW는 일반적으로 이해하기가 매우 어렵다. 이런 문제를 해결하기 위하여 본 논문에서는 SW를 체계적으로 이해하기 위한 scalable하고 modular한 접근 방법으로서 architecture에 기반을 둔 SW understanding model, 즉 SUMarchitecture을 제시한다. 이 모델은 SW로부터 architecture를 추출하여 SW를 상하계층적 구조로 구성하고 이 architecture의 복잡계층축을 토대로 SW의 구조, 기능 행위의 3차원적인 정보를 추상화 단계와 상세 단계에서 이해할 수 있게 한다. 즉, 이 모델은 복잡계층성, 구조성, 기능성, 행위성, 명세-상세 이원성 등의 5차원 세계에 토대를 둔 SW 역공학 종합 모델이다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.580-582
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• 2003

정보화 시대의 요구에 대한 교육적 대응은 학습자 중심의 교육이며, 정보통신기술을 기반으로 한 원격교육이다. 특히 인터넷에서 가장 활발하게 사용되고 있는 웹은 그 특성상 구성주의 학습 원리를 실현하는데 적절한 환경을 제공하고 있으며, 교육 시스템의 변화를 가져오고 있다. WBI(Web Based Instruction)는 웹을 매체로 활용하여 원거리에 있는 학습자를 교육시키는 형태로서 교수자와 학습자간 상호작용을 가능하게 하고 다양한 형태의 학습자료를 제공하며, 공간적 제약을 극복할 수 있다는 장점이 있다. 본 논문에서는 웹에 기반한 교육적 활용의 한 모델로서 학습자의 자기 주도적이고 적극적인 학습을 촉진하기 위한 자기 주도적 학습이론과 학습자의 개인차를 고려한 수준별 학습이론을 적용하여 효율적인 웹 기반 학습이 가능하도록 하였으며 이러한 학습이론을 웹에 기반한 정보처리 기능사 필기시험에 적용함으로써 실업계 고등학교 교육현장의 비효율성과 기존의 문제은행 시스템의 문제점을 보완하여 시험준비에 보다 효율적으로 대비하도록 설계 및 구현하였다.

• Journal of Korea Game Society
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• v.15 no.2
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• pp.115-122
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• 2015

In this paper we propose a serious game for experience of music performance, which allows users to readily enjoy musical playing, even if the player has little or no experience in playing musical instruments. This game makes it easier for users to correctly perform given melodies along with standard performance, using a score-adjusting algorithm that can cope with the particular errors commonly made by beginners. This music performance is achieved by the agent to interpret the gestural sign of the user. We understands the interaction of the user and the agent as a communication model from the Peircean Semiotic perspectives.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.19 no.11
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• pp.1119-1125
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• 2009

The coupled fluid-structure interaction problem is analyzed using the theoretical method to investigate the coupled vibration characteristics of functionally graded material(FGM) cylindrical shells conveying an incompressible, inviscid fluid. Material properties are assumed to vary continuously through the thickness according to a power law distribution in terms of the volume fraction of the constituents. The steady flow of fluid is described by the classical potential flow theory. The motion of shell represented by the first order shear deformation theory(FSDT) to account for rotary inertia and transverse shear strains. The effect of internal fluid can be taken into consideration by imposing a relation between the fluid pressure and the radial displacement of the structure at the interface. Numerical examples are presented and compared with exiting results.

• Annual Conference of KIPS
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• 2003.11b
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• pp.1033-1036
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• 2003

최근 인터넷의 급격한 발전의 결과로서 전산 시스템의 대규모화와 복잡화가 증가함에 따라 시스템의 전문적인 관리를 위한 솔루션에 대한 요구가 증가하고 있다. 서비스를 수행중인 시스템에 있어서 성능 관리는 전산 자원의 가동 성능을 유지하고 향상시키는 일련을 작업을 의미하며 모니터링, 진단, 제어의 사이클로 관리자와 상호작용을 수행한다. 본 논문에서는 차세대 인터넷 서버의 관리를 위한 시스템 관리 솔루션인 MATRlx (MATRIx's Advanced Technology of Resource Information extraction / eXploitation / eXploration / eXchange) 시스템을 소개하며 MATRIx 시스템의 성능 관리 블록인 MATRIx-PFMB의 설계 및 구현에 대한 이슈들을 다룬다. MATRIx-PFMB(PerFormance Management Block)는 관리 서버와 에어젼트 및 관리자 콘솔로 구성되며 능동적인 시스템 관리를 위한 진단 도구 및 제어 기능을 제공하고 기능 확장의 용이성을 제공하기 위한 프레임워크 구조를 갖는다.