• Clinical and Experimental Reproductive Medicine
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• 제41권4호
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• pp.147-150
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• 2014

Objective: Clinical and Experimental Reproductive Medicine (CERM) converted its language to English only beginning with the first issue of 2011. From that point in time, one of the goals of the journal has been to become a truly international journal. This paper aims to identify the position of CERM in its scholarly journal network based on the journal's metrics. Methods: The journal's metrics, including citations, countries of author affiliation, and countries of citing authors, Hirsch index, and proportion of funded articles, were gathered from Web of Science and analyzed. Results: The two-year impact factor of 2013 was calculated at 0.971 excluding self-citation, which corresponds to a Journal Citation Reports ranking of 85.9% in the category of obstetrics and gynecology. In 2012, 2013, and 2014, the total citations were 17, 68, and 85, respectively. Authors from nine countries contributed to CERM. Researchers from 25 countries cited CERM in their articles. The Hirsch index was six. Out of 88 original articles, 35 studies received funds (39.8%). Conclusion: Based on the journal metrics, changing the journal language to English was found to be successful in promoting CERM to international journal status.

• 한국군사과학기술학회지
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• 제12권5호
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• pp.571-576
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• 2009

In terms of protective engineering, there are no noticeable researches regarding covered-positions for smaller units in South Korea. So, standards to maintain and build protective facilities for larger units have been applied in ones for smaller units without any adjustment. The previous study was to calculate penetration depth of the concrete walls because the experiment performed indoor. In this outdoor experiment, velocity of projectile impact as one of the other important factors was considered to prove the validity of 30cm concrete wall thickness as effective protective level of the covered-position. Random effects and extraneous variables which could be occurred in outdoors experiment were controlled with statistical techniques. As a result, velocity of projectile impact was significant variable and the given standard, 30cm thickness of concrete walls was as valid as ever.

• 보건의료산업학회지
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• 제5권1호
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• pp.111-123
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• 2011

The research tris to provide some basic data for the efficient method of human resources management and the efficiency of hospital organization by drawing how servant leadership of physical therapists has impact on job satisfaction and organizational commitment. As a measuring device the method of self-fill-in questionnaire survey was utilized and the correlation and regression analysis was practiced on demographic property, the relationships of 11 kinds of variables between servant leadership and organizational commitment. Job satisfaction was concerned with internal motivation, autonomy, hearing, altruistic vocation, community sense, sympathy formation, vision in the positive order, while organizational commitment was concerned with internal motivation, altruistic vocation, vision, autonomy, community sense, hearing, and sympathy formation is the positive order. Supervisors of physical therapists should try to strive to fulfill the demands of therapists in their position, suggest the vision and objectives to them, and enhance their community sense. As a result, supervisors of physical therapists can enhance job satisfaction and organizational commitment in the position of their employees.

• 자원환경지질
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• 제47권3호
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• pp.227-235
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• 2014

본 연구에서는 지질자원 분야 연구개발 수월성을 제시할 수 있는 평가방법인 계량서지학(Bibliometrics)의 SCI논문 분석을 통해 질적평가 지표를 제시하고, 이를 KIGAM의 6개 세계수준 후보 연구실의 기술수준 분석에 적용했다. Heo et al. (2008), Cho (2013)에서 제시되었던 표준화된 순위보정 영향력 지수(mrnIF)를 연구수월성 지표로 활용하였다. 2012년 편당 IF는 희유자원활용 분야 KIGAM 연구실이 가장 높았으나 순위(position) 지수 및 표준화된 순위보정 영향력 지수(mrnIF)는 지하수(최고순위 적용 position/mrnIF), 자원탐사개발(평균순위 적용 position/mrnIF) 분야가 제일 높게 나타났다. 시계열 분석 결과 표준화된 순위보정 영향력 지수(mrnIF)는 지하수 분야 연구실이 2009년, 2011년 실적이 월등이 좋으나 타년도의 경우 도시광산 및 자원탐사개발 분야 연구실이 우수한 실적을 보이는 것을 알 수 있다. 수월성 지표로 전체 게재논문 중 표준화된 순위보정 영향력 지수(mrnIF)가 80 이상인 비율 및 90 이상인 비율로 비교한 결과, 2011년의 경우 지하수 분야 연구실이 가장 우수하였으나 다른 연도의 경우 지표별로 다른 순위를 보여 가장 우수하다고 보기 어려웠다. Cho (2013)의 최고등급 연구수월성 지표인 90 이상 논문 비율 20% 이상을 도시광산 분야 연구실이 만족하고 있으며 지하수 분야 연구실은 평균순위를 적용한 2010년을 제외하고 만족하고 있었다. 이와 같이 양적인 논문 수 뿐 만 아니라 논문의 질적 분석을 통해 해당 연구실의 기술수준을 비교할 수 있었다. 세계 수준의 연구실이 되기 위해서는 양적인 SCI 논문 수의 확대 뿐 만 아니라 논문의 질적 향상을 위해 노력해야 할 것이다.

• 한국운동역학회지
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• 제17권1호
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• pp.29-39
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• 2007

This study were obtained elapsed time phase-by-phases, displacement, user angle, velocity and angular velocity to analyse kinematically contributing factors at impact of forehand drive motion, on targeting three male players. The results of the study were presented as follows; In the forehand drive swing, the elapsed time by phases was a total of .52 seconds: .30 seconds from backswing to impact and .22 seconds from impact to follow-through, Considering the mean change in locations of COM of each(part$\rightarrow$body segment) at impact, racket head, left shoulder, right wrist and left hip, the left-right directions(X-axis) were showm to be each $.61{\pm}.03$, $1.19{\pm}.08$, $.66{\pm}.03$, $.94{\pm}.06$, and $.45{\pm}.03m$. The displacement differences of COM of each body segment were shown to be -.57, -.05, -.33, and .16m. For the vertical direction(Z-axis), the center of mass was lowest at impact and highest at E3. For the displacement of the right wrist on the left hip, the right wrist moved to .82m to the lower direction without change in the locations of the hip from E1 from E2. When the left hip moved .02m from E2 to E3, the right wrist moved .7m in the upper direction. In respect to the velocity of each body segment, the hip and the shoulder joint accelerated and then the wrist followed. Then the right wrists of all the subjects and their racket heads showed maximum speed, and an effective swing was observed. At the angle of each part, the angle of the right wrist was the smallest at the backswing and the largest at the moment of the impact. Then it increased gradually in the follow-through section. In respect of angular velocity for subject A, the hip moved and the largest change occurred. Immediately before the impact, the subject made a swing using his right wrist, his hip, and the shoulder joint, showing the maximum value, which was judged to be effective.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 추계학술대회논문집
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• pp.457-462
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• 2006

This paper is concerned with the active vibration control experiment on cylindrical shell equipped with Macro Fiber Composite(MFC) actuators. The MFC actuators were glued to the cylindrical shell in circumferential directions. To verify the theoretical result, vibration test using impact hammer and accelerometer was carried out. It was found from experiments that theoretical result predicts experimental result to some extent. The positive position feedback controllers were designed and applied to the test article. It was observed that the resonant amplitude of the fundamental mode was reduced by 20dB thus achieving active vibration control. The active vibration control of the response subject to non resonant excitation has been of interest. We developed the combination of the positive position feedback controller which can cope with the fundamental mode and the positive position feedback controller which can counteract the external disturbance with non resonant frequency. It was found from experiments that the hybrid controller can suppress the vibration amplitude successfully.

• Journal of Communications and Networks
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• 제14권4호
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• pp.396-409
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• 2012

With the proliferation of diverse wireless devices, there is an increasing concern about the security of location information which can be spoofed or disrupted by adversaries. This paper investigates the characterization and detection of location spoofing attacks, specifically those which are attempting to falsify (degrade) the position estimate through signal strength based attacks. Since the physical-layer approach identifies and assesses the security risk of position information based solely on using received signal strength (RSS), it is applicable to nearly any practical wireless network. In this paper, we characterize the impact of signal strength and beamforming attacks on range estimates and the resulting position estimate. It is shown that such attacks can be characterized by a scaling factor that biases the individual range estimators either uniformly or selectively. We then identify the more severe types of attacks, and develop an attack detection approach which does not rely on a priori knowledge (either statistical or environmental). The resulting approach, which exploits the dissimilar behavior of two RSS-based estimators when under attack, is shown to be effective at detecting both types of attacks with the detection rate increasing with the severity of the induced location error.

• Transactions on Electrical and Electronic Materials
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• 제15권3호
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• pp.170-173
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• 2014

In order to assess the impact of proprioceptive exercises on the position sense ability of the knee joint, we conducted an analysis using Biodex System $3pro^{(R)}$, targeting 42 ordinary people (male=22, female=20). After applying proprioceptive exercise, we measured changes in balance and flexibility, and active articular position sense (AAPS), depending on gender. To find out the change in each measurement item variable, we carried out dependent t-tests. The statistical significance level was set to 0.05. The research showed that after applying the proprioceptive exercise, AAPS was significantly improved for both men and women (p<.01). In the case of women, the flexibility was significantly improved (p<.01). Also, the balance was significantly improved for both men and women (p<.01). Therefore, the proprioceptive exercise program is considered to be very useful in improving muscle and joint function, and preventing injuries. Thus, continuous clinical studies using Biodex system $3pro^{(R)}$ are required for a variety of scientific evaluations of proprioceptive skills.

• 대한물리의학회지
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• 제15권3호
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• pp.1-9
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• 2020

PURPOSE: This study examined the effects of muscle fatigue on proprioception in the type of taekwondo training, causing injury to taekwondo athletes. METHODS: The subjects were divided into Taekwondo Kyorugi athletes (n = 14) and Taekwondo Poomsae athletes (n = 14). After inducing muscle fatigue to the subjects, the joint position sense (JPS) and the force reproduction sense (FRS) were measured before and immediately after the induction of muscle fatigue. RESULTS: Studies have shown no significant impact on the JPS and FRS caused by muscle fatigue induced by Poomsae and Kyorugi (p > .05). The JPS, however, showed a significant difference before and after Kyorugi (p < .05). The FRS showed significant differences before and after Poomsae (p < .05). Through this study, the injuries to taekwondo athletes appear to be influenced by the joint position and force reproduction. Moreover, the injury appears to affect the joint position sense in Kyorugi athletes and the force reproduction sense in Poomsae athletes. CONCLUSION: The results will contribute to injury prevention and athlete protection. In addition, the information can be used as basic data for the development of sports injuries prevention and rehabilitation programs for Taekwondo athletes. Research is needed on the customized management of sports methods and self-care to prevent sports damage, considering the athletic characteristics of the taekwondo athletes in the future.

• 한국융합학회논문지
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• 제7권5호
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• pp.51-57
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• 2016

본 연구는 초음파 영상(ultrasound imaging)을 이용하여 네발기기 자세(quadruped position)에서 골반압박벨트(pelvic compression belt)가 뭇갈래근과 척추세움근의 근두께에 융합적으로 미치는 영향을 알아보기 위해 실시되었다. 대상자는 30명의 남자대학생으로 실험에 자발적으로 참여한 자로 선정하였다. 골반압박벨트를 위앞엉덩뼈가시아래(anterior superior iliac spines)에 착용한 상태와 착용하지 않은 상태에서 네발기기 자세를 실시하였고, 초음파영상 진단장치를 이용하여 근 두께를 측정하였다. 자료분석은 반복측정분산분석을 이용하였다. 연구결과, 뭇갈래근의 경우 골반압박벨트를 착용하였을 때가 착용하지 않았을 때보다 근두께가 유의하게 증가하였고(p<.05), 척추세움근의 경우도 골반압박벨트를 착용하였을 때가 착용하지 않았을 때보다 근두께가 유의하게 증가하였다(p<.05). 따라서 본 연구결과를 통해 골반압박벨트의 착용이 요통환자에게 효과적이며, 임상에서 다양한 네발기기 자세운동의 처방과 적용 시에 유용한 자료로 활용하고자 한다.