• The Journal of Korean Physical Therapy
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• 제25권5호
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• pp.303-310
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• 2013

Purpose: The purposes of this study were to evaluate the correlation of clinical tools for assessment of balance and ability of gait, in order to discriminate the phases of sit-to-walk movement of patients with stroke using the motion analysis system, and to investigate the reliability of the phase of sit-to-walk movement according to functional ability of patients with stroke. Methods: Twenty -one patients participated (men 17, women 4) in this study. Sit-to-walk movement of all patients was recorded by the motion analysis system. Berg Balance Scale, Timed Up and Go test, Functional Reach Test, 10 meter Walk Timed Test, and Performance-Oriented Mobility Assessment were used as functional assessment tools. Results: The results of this study showed significant correlation between the phase I, II, IV and total phase duration of sit-to-walk movement and functional assessment tools. In addition, the intraclass correlation coefficient (ICC) showed high reliability in accordance with the functional ability of patients with stroke (Pearson's r 0.93 to 1.00). Conclusion: In conclusion, there is high reliability between measures of the phase of sit-to-walk movement of chronic stroke patients and the clinical assessment tool. Results of this study suggest that measurement of the phase of sit-to-walk movement can be used significantly as an intervention and a clinical tool for patients with stroke.

• 한국의료질향상학회지
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• 제19권1호
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• pp.30-42
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• 2013

Objectives: This study was intended to check if the "Creating Clean Wards" project, which is an innovative reinforced campaign activity targeting infection control strategies and active surveillance cultures for VRE (vancomycin resistant enterococci) high-risk patients to be admitted in the NS (neuro-surgery) wards, would be reduced the incidence rates of VRE acquisition, transmission rates. Methods: 75 subjects of the VRE high-risk patients were surveyed by carrying out active surveillance cultures of VRE colonization 11 times from January to March, 2012. And the retrospective study was conducted dividing them into two groups. Results: The incidence rates of VRE acquisition was reduced to 3.67 cases per 1,000 patients day in the control group and to 2.88 cases in experimental group, which was not statistically significant (p = .753). VRE transmission rates of 0.0015 per day before the project tended to increase to 0.0019, although not statistically significant (p = .650). As a result of multivariate analysis with regard to using glycopeptide antibiotics in order to find out risk factors of VRE colonization, the patients who had been treated with glycopeptide until VRE colonization showed 274.41 times higher rate. Conclusion : For effective VRE infection control in NS wards, We should carry out active surveillance culture regularly, especially patient of using glycopeptide. And block the spread of VRE by strengthening infection control through the strict isolation and the changed mind-set of members motivated by the "Creating Clean Wards" campaign.

• 한국도서관정보학회지
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• 제53권2호
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• pp.241-264
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• 2022

1929년 발생한 광주학생독립운동 관련 연구는 2018년 이후로 연구주제를 다변화하고 있다. 특히 눈에 띄는 것은 광주학생독립운동의 국외 확산 과정에 관련한 연구들이다. 그러나 이들 연구는 사료의 부족, 새로운 방법론의 부재 측면에서 한계를 보인다. 따라서 이 연구는 광주학생독립운동 국외 전파 과정을 문헌정보학에 기반을 둔 정보 전달 과정으로 분석하였다. 이를 위해 첫째, 새로운 중국 신문 사료를 발굴하고, 둘째, 2-모드 네트워크 분석을 실시했다. 그 결과는 다음과 같다. 첫째, 중국 신문 16종에서 125건의 중국 신문 사료를 발굴해냈고, 이중 104건이 신규 발굴된 사료이다. 둘째, 선행연구에서 주장된 최초 보도보다 더 앞선 기사가 발굴되었다. 셋째, 중국의 북경·사천·상해·천진·호남 지방에서 서울의 1·2차 확산 시위와 광주의 사건을 중심으로 보도했다. 이 연구는 광주학생독립운동 연구의 확장 및 다변화를 꾀했다는 데에서 의의가 있다.

• 대한안전경영과학회지
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• 제15권2호
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• pp.55-61
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• 2013

For years, many studies have mainly been investigated in a complicated human motion analysis. Recently, many motion analysis equipments have been studied and developed. Therefore, the more complex human movement analyses are possible, we have enabled us to perform more and more complicated human movement analyses. A Three-dimensional(3D) motion analysis on of the several methods is a useful tool for analyzing the human motion analysis. The purpose of this study was to develop the 3D human motion analysis using a kalman filter algorithm and a gyro sensor. The algorithm and sensor were used to human motion analysis with high-speed motion capture. In this study, the developed system will be adapted to facilitate golf swing analysis. Using the developed system, golfers and coaches who do not have advanced biomechanical knowledge can easily be used to their golf swing analysis. Future study is necessary for more practical and efficient area such as other sports industries, 3D game industries, rehabilitation training, etc..

• 한국전자통신학회논문지
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• 제14권6호
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• pp.1083-1088
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• 2019

전송성능은 수중 MANET의 연구, 개발 뿐 아니라 설계, 구축 및 운용에 있어서 매우 중요한 요소임에도 불구하고 네트워크 성능의 정도를 비교, 분석하는 척도로 한정적으로 사용되는 경향이 있다. 본 논문에서는 수중 MANET에서 전송성능의 이용을 확대하기 위하여 전송성능을 활용한 이동패턴을 분석해 본다. 이를 위하여 전송성능과 이동패턴의 관계를 고찰하고 이들 토대로 특정 이동패턴이 전송성능에 미치는 영향을 분석한다. 본 연구의 결과는 수중 환경에서 이동체의 전송성능을 관찰하여 이동체의 이동패턴을 예측 및 분석하는 주요 근거로 활용될 수 있을 것으로 본다.

• 한국콘텐츠학회논문지
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• 제4권4호
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• pp.153-161
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• 2004

이동 가입자에 대한 효율적인 이동성 관리는 이동통신망에서 매우 중요한 역할을 한다. 본 논문에서는 이동기준 위치등록(MBR) 방식을 개선한 새로운 위치등록 방식을 제안한다. 기본 아이디어는 위치등록 수행 후 이동국의 이동경로를 내부 메모리에 기억하고 있다가 이동 가입자가 최근에 위치등록을 수행한 셀의 주변에서 이동하는 경우 불필요한 위치등록이 일어나지 않도록 하는 것이다. 제안한 방식의 분석은 이동기준 위치등록 방식과의 비교를 시뮬레이션을 통하여 수행하였다. 시뮬레이션 분석 결과 제안한 방식은 불필요한 위치등록을 최소화함으로써 이동기준 위치등록 방식에 비해 위치등록 회수가 작아서 그 성능이 우수함을 알 수 있었다.

• Journal of information and communication convergence engineering
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• 제8권5호
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• pp.591-594
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• 2010

Control devices perform various works for us in many areas. The device is being utilized for precision movement of certain object. In as much as control devices are activated by means of motors, motor control is important.[1][2] Generally, servo motors capable of precision control are more frequently used than DC motors. Use of 3 motors allows 3- way movement. Medical controllers for surgical operation require high precision. [3][4][5][6] AX-12, a servo motor can realize various types of movement. AX-12 can be easily manufactured in the form of a robotic arm and has features that MCU and its peripheral circuits are simple. For precision movement, 3 motors can be controlled by use of a single joystick and 2 buttons, with movement angles being adjusted by having preset values in the program changed.[7][8] By virtue of this study, we have realized small precision robotic arm system utilizing single joystick and 2 buttons. This system can control the robotic arm in the direction desired by the user. The system has been designed such that a joystick controls 2 motors with the remaining motor being controlled by a button. Single MCU is tasked with both control and movement.[9] We have shown precision robotic arm system in the Figure contained in the conclusion part and made reference to results of analysis in there. It has also been demonstrated that the system can be utilized in the industry.[8]

• Interdisciplinary Bio Central
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• 제1권1호
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• pp.5.1-5.4
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• 2009

This article is an addendum to the authors’ previous article (Kim, J. et al. (2008) Plant Cell 20, 307-319). The instrumentation and software described in this article were used to analyze the circadian leaf movement in the previous article. Here, we provide detailed and practical information on the instrumentation and the software. The source code of the LMA program is freely available from the authors. The circadian clock regulates a wide range of cyclic physiological responses with a 24 hour period in most organisms. Rhythmic leaf movement in plants is a typical robust manifestation of rhythms controlled by the circadian clock and has been used to monitor endogenous circadian clock activity. Here, we introduce a relatively easy, inexpensive, and simple approach for measuring leaf movement circadian rhythms using a USB-based web camera, public domain software and a Leaf Movement Assay (LMA) program. The LMA program is a semi-automated tool that enables the user to measure leaf lengths of individual Arabidopsis seedlings from a set of time-series images and generates a wave-form output for leaf rhythm. This is a useful and convenient tool for monitoring the status of a plant's circadian clock without an expensive commercial instrumentation and software.

• 한국운동역학회지
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• 제21권1호
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• pp.9-16
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• 2011

The purpose of this study is to analyze the effects of both various shoe types and bare feet on ground reaction force while walking. Ten first-year female university students were selected. A force platform(Kistler, Germany) was used to measure ground reaction force. Six types of shoe were tested: flip flops, canvas shoes, running shoes, elevated forefoot walking shoes, elevated midfoot walking shoes, and five-toed shoes. The control group was barefooted. Only vertical passive/active ground reaction force variables were analyzed. The statistical analysis was carried out using the SAS 9.1.2 package, specifically ANOVA, and Tukey for the post hoc. The five-toed shoe had the highest maximum passive force value; while the running shoe had the lowest. The first active loading rate for running shoes was the highest; meanwhile, bare feet, the five-toed shoe, and the elevated fore foot walking shoe was the lowest. Although barefoot movement or movement in five toed shoes increases impact, it also allows for full movement of the foot. This in turn allows the foot arch to work properly, fully flexing along three arches(transverse, lateral, medial), facilitating braking force and initiating forward movement as the tendons, ligaments, and muscles of the arch flex back into shape. In contrast movement in padded shoes have a tendency to pound their feet into the ground. This pounding action can result in greater foot instability, which would account for the higher loading rates for the first active peak for padded shoes.

• 한국운동역학회지
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• 제23권4호
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• pp.307-318
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• 2013

The purpose of this study was to analyze the kinematic variables of glide kip motion on the uneven bars through a two-dimensional cinematography. Three expert female gymnastics players were involved in the data gathering process. The followings were concluded according to the results. The arm, trunk and leg segments were fully extended throughout the kip movement. The whole body center of gravity showed the biggest changes during 66 to 87% of the kip motion. During the kip phase, the horizontal displacement of the leg was greater than the vertical displacement the leg. Glide kip motion should be done in orders of upward movement of leg, forward movement of leg, upward movement of trunk and forward movement of trunk segment. It was found that trunk segment and hip joint movements showed bigger changes than those of leg segment and shoulder joint in the glide kip motion. The largest angular velocity of hip joint was shown in the middle of the kip Phase. In conclusion, effective kip movement could be resulted when the trunk was displaced posterior-upward direction with fast hip joint extension after the leg segment was elevated upward and thrusted forward in advance.