• 한국운동역학회지
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• 제17권4호
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• pp.9-16
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• 2007

The purpose of this study was to analyze the effects of after aquatic exercise on gait in the Falls Experienced elderly. There were one group : Fall Experienced Elderly Women(n=8). They were tested on their gait (Elapse time of each phase, Stance time of limb, Stride length, Velocity of segment). we took video and analyzed their movement using Ariel Performance Analysis System and compared gait parameters. For data analysis, mean and standard deviation scores were calculated, and correspondence sample t-test and pearson's correlation analysis were used. First, after exercise is short than before exercise on Elapse time of each phase, fall-experience subjects showed meaningful total time. Second, after exercise is short than before exercise on Stance time of limb and Stride length, fall-experience subjects showed meaningful Stride length. Third, after exercise is fast than before exercise on Velocity of segment.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제45회 하계 정기학술대회 초록집
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• pp.300.2-300.2
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• 2013

Periodically shaped pillar-arrays and hole-arrays were fabricated on a Si wafer. Geometric features are similar in a periodic length of 4 ${\mu}m$ and a depth of 2 ${\mu}m$. For the hole-array patterns, positive PR processes were performed. UV exposed PR patterns were removed during a developing process to leave shapes of inversely replicated from a glass photomask. Meanwhile, negative PR processes were taken for the pillar-array patterns. UV exposed PR patterns were remained on a Si substrate having a same feature of patterns of a glass photomask. For an electrical aspect, a pillar structure has a short carrier-collection length resulting in the improved open-circuit voltage of 609 mV from 587 mV of a planar device. An improved performance may be achieved to reduce recombination loss along the patterning surface.

• International Journal of Contents
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• 제18권1호
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• pp.27-39
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• 2022

Short videos are becoming more popular in mobile Internet age. Not only people's media consumption patterns have been changed by the rise of this new media form, but also it has posed challenges to public psychological well-being. For many netizens, their entertainment needs have been met by watching short videos. However, many side effects, such as addiction and anxiety, reduce users' subjective well-being instead of satisfying the entertainment motivation after watching short videos. Therefore, it has become a significant research problem in short videos to figure out how to get audiences to watch short videos on a regular basis while avoiding side effects like anxiety and addiction and improving audiences' subjective well-being. Based on the theory of Internet addiction, this study analyzed short video users using the 2×2×2 research method and explored the relationship between the length of use, addiction, anxiety, and subjective well-being of short video users. The results showed that short video users with different usage lengths showed significant differences in addiction, anxiety, subjective well-being, and online social support; innovative different short video users showed significant differences in addiction and anxiety, as well as a triadic relational interaction of short video users' anxiety under the interaction with self-efficacy and online social support. This study contributes to the advancement of internet addiction theory research and application, assisting short video users in avoiding addiction and anxiety, and improving the subjective well-being of short video users, thereby promoting the growth of the short video industry.

• 한국전문물리치료학회지
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• 제13권4호
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• pp.79-86
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• 2006

The purpose of the current experiment was to describe interlimb coordination when swing limb conditions are being manipulated by constraining step length or by adding a 5 or 10 pound weight to the swing limb distally. Subjects were asked to begin walking with the right limb to land on the primary target (normal step length) that is 10 cm in diameter. However, if, during movement, the light was illuminated, then the subject had to step on one of the secondary targets (long and short step length). These three step length conditions were repeated while wearing a 5 pound ankle weight and then when wearing a 10 pound ankle weight. Ground reaction force (GRF) data indicated that there were changes in the forces and slopes of the swing and stance Fx GRFs. Long stepping subjects had to increase the propulsive force required to increase step length. Consequently, swing and stance toe-off greatly increased in the long step length condition. Short step length subjects had to adequately adjust step length, which decreased the speed of gait initiation. Loading the swing limb decreased the force and slope of the swing limb. Swing and stance toe-off was longest for the long step length condition, but there was a small difference of temporal events between no weight and weight condition. It appears that subjects modulated GRFs and temporal events differently to achieve the peak acceleration force of the swing and stance limb in response to different tasks. The findings from the current study provide preliminary data, which can be used to further investigate how we modulate forces during voluntary movement from a quiet stance. This information may be important if we are to use this or a similar task to evaluate gait patterns of the elderly and patient populations.

• Journal of electromagnetic engineering and science
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• 제9권3호
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• pp.164-173
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• 2009

In this paper, two new circuit structures for European and U.S. ultra-wide band(UWB) bandpass filters(BPFs) with sharp roll-off characteristics are introduced. We show first that the ultra-wide bandpass property is obtained from a $\lambda$/4 open T resonator with a capacitively coupled $\lambda$/4 short-circuited line, which provides two attenuation poles at lower and upper cutoff frequencies. Then, two identical capacitively coupled input/output lines, which can be $\lambda$/4-length open ends or $\lambda$/2-length short ends, with the T-resonator, are adopted to suppress lower and higher frequency components outside of the pass band. There is coupling between the input and output lines providing two additional transmission zeros in the lower and upper transition bands of the filter. Since the coupling between the T-resonator with the $\lambda$/4 short-circuited line and the input/output lines limits the bandwidth of the filter to the European UWB band, both the $\lambda$/4 short-circuited line and the input/output lines are inserted between the two stacked T-resonators for the U.S. UWB band. The filter structures are simulated with ADS and HFSS and realized with low-temperature co-fired ceramic(LTCC) green tape which has the dielectric constant of 7.8. Measurement results agree well with HFSS simulation results.

• JSTS:Journal of Semiconductor Technology and Science
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• 제13권3호
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• pp.213-223
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• 2013

A unified channel thermal noise model valid in all operation regions is presented for short channel MOS transistors. It is based on smooth interpolation between weak and strong inversion models and consistent physical model including velocity saturation, channel length modulation, and carrier heating. From testing for noise benchmark and comparing with published noise data, it is shown that the proposed noise model could be useful in simulating the MOSFET channel thermal noise in all operation regions.

• 대한산업공학회지
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• 제13권2호
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• pp.97-103
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• 1987

Skip-Lot sampling plan is formulated in terms of renewal process. This approach facilitates studying the average outgoing quality in a short production run of length t, AOQ (t). By numerical studies it is found that the long-run average outgoing quality (AOQ) greatly overestimates AOQ (t) for short runs.

• 한국작물학회지
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• 제33권3호
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• pp.270-280
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• 1988

피맥의 다수확을 위하여는 다비, 밀식재배를 하여야 하며 이때에 문제가 되는 것은 도복에 의한 감수이다. 이러한 중요성에 비추어 피맥 7개 조합을 공시하여 간장과 수장의 대응이 되는 isogenic lines 을 만들어 다비, 밀식재배조건하에서 간장 및 수장의 차이에 따른 유전자의 주효과와 다면적효과를 구명하고 농업형질에 미치는 영향을 알아 양질 다수성 품종육성을 위한 기초자료를 얻고저 시험하였는바 그 결과를 요약하면 다음과 같다. 1. 간장동질유전자계통에서 단간계통 대 중간계통, 수장동질유전자계통에서 단수계통 대 중수계통, 간장과 수장 동질유전자계통에서 단간단수계통 대 중간중수계통, 단간단수계통 대 장간장수계통간에는 간장 및 수장의 주효과와 다면적 효과에 고도의 유의성을 보였다. 2. 간장동질유전자계통에서 간장유전자의 영향이 큰 형질은 출수일수, 제1, 2절간장, 수당립수, m$^2$당 수수, 1$\ell$중이었고 수장동질유전자계통에서 수장유전자의 영향이 큰 형질은 수축절수, 출수일수, 성숙일수, 1,000립중, 1$\ell$중이었다. 3. 간장 및 수장동질유전자계통에서 간장 및 수장유전자가 복합적으로 영향을 주는 형질은 수축절수, 제 2, 3, 4 절간장, 1,000립중 및 수량이었다. 4. 수량은 단간계통이 중간계통보다, 중수계통이 단수계통보다, 중간중수계통이 단간단수계통보다, 단간단수계통이 장간장수계통보다 많은 경향이며 성숙일수는 단간계통이 중간계통보다, 중수계통이 단수계통보다, 단간단수계통이 중간중수계통보다 짧은 경향이었다.

• 한국의류산업학회지
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• 제7권2호
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• pp.211-217
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• 2005

The purpose of this study is to analyze the image evaluation and the preference of tailored jacket focused on the variation of the length according to the body type and the degree of satisfaction with the body of middle-aged women. For this study, twenty seven different types of tailored jacket were designed with some variation of their silhouette, the length and the collar's figure on three hundred and twenty three middle-aged women ranging from 35 to 50 years old. There was a significant difference in the image evaluation and the preference of tailored jacket according to the body type of middle-aged women. The women of the body type I evaluated that tailored jackets of the long length were more attractive, graceful, and active, soft and preferred the style, and the women of the body type II and III, them of the middle length. The women of the body type I evaluated that tailored jackets of the short length were more attractive, graceful, active, soft and preferred the style. Also there was a meaningful difference in the image evaluation and the preference of tailored jacket according to the degree of satisfaction with their bodies. As satisfied with their face size, they thought tailored jackets of the long length were more attractive, graceful and active, soft and they preferred the style. As satisfied with the girth of the hip, they evaluated the short/long tailored jackets were more attractive, graceful and active, soft and they preferred the style. As satisfied with their height they valued the long tailored jacket was more attractive, graceful and active, soft and they preferred the style.

• 대한치과보철학회지
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• 제47권4호
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• pp.457-462
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• 2009

연구목적: 임플란트의 생존율에 영향을 미치는 요소들에 따른 구체적인 생존율을 살펴보고 짧은 임플란트의 사용도 예후성있는 치료인지에 관해 평가하는 것이다. 연구방법: MEDLINE (PubMed)을 통하여 검색된 논문에서 임플란트의 길이, 직경, 식립 위치, 표면 처리, 상부 구조와 관련된 정보를 추출하여 각 요인별 생존율을 비교 분석하였다. 임플란트의 길이와 직경의 생존율과 구간별 생존율 비교를 위해 카이 제곱 독립성 검정을 이용하였으며 임플란트의 식립 위치나 표면처리, 상부 구조 디자인 간의 생존율 비교를 위해서 Window용 SPSS 프로그램을 이용한 일원배치 분산 분석을 이용하였다. 결과 및 결론: 짧은 임플란트 (8.5 mm 이하)의 생존율은 95.87% 였으며 이는 여러 문헌에 보고된 표준적인 길이 (10-12 mm)를 가진 임플란트의 생존율과 유사하였다. 그 중에서도 길이 6-7 mm 짧은 임플란트의 생존율이 길이 7.5-12 mm 임플란트의 생존율보다 더 낮았다 (P<.05). 한편, 직경 4 mm미만, 4-5 mm, 그리고 5 mm이상의 3집단으로 나누어 생존율 비교시 4 mm 미만 집단에서 낮은 생존율을 보였으며 길이 6-7 mm의 짧은 임플란트의 경우 5-6 mm 직경의 임플란트를 식립했을 때의 생존율은 97.01%, 3.1-4.8 mm 직경일 때의 생존율 92.96%로 통계적으로 유의한 차이를 보였다. Machined surface와 표면 처리된 짧은 임플란트의 생존율 비교시 표면 처리된 경우가 약 6.3% 정도 높은 생존율을 보였으며 보철 수복시 인접 임플란트와 연결한 경우 (99.4%)가 단일 임플란트 치관으로 수복한 경우 (94.3%)보다 높은 생존율을 보였다.