• 한국식품영양학회지
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• 제15권1호
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• pp.7-11
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• 2002

학령전 아동의 zinc absorption, excretion, balance에 대하여 연구한 결과는 다음과 같다. Zinc absorption은 남자아동의 경우 29.7%, 여자아동의 경우 23.3%, 평균 25.8%로 나타났다. 대상자기 zinc absorption은 zinc intake와는 상관성이 나타나지 않았으며, zinc balance와 유의적 상관(p<0.01)을 보였다. Zinc balance는 남자아동의 경우 평균 3.25mg/day , 여자아동의 경우 1.78mg/day , 평균 2.34mg/day 로 1명의 대상자를 제외하고 모두 positive balance를 보였다. Fecal zinc loss는 평균 6.31mg/day, urinary ziilc loss는 평균 0.16mg/day 였다. zinc intake는 focal zinc loss및 zinc balance에 유의적 영향을 미치는 것으로 나타났으며(p<0.01), urinary zinc는 intake의 영향을 받지 않았다. 우리나라 학령전 아동의 zinc absorption 및 balance 는 양호한 것으로 나타났다. 그러나 이 방면의 연구 자료가 많지 않아, 성장기 아동을 대상으로 한 zinc nutrition에 대한 구체적이고 지속적인 연구가 필요하다.

• 문화기술의 융합
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• 제7권3호
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• pp.269-276
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• 2021

본 연구는 IT업계 종사자들을 대상으로 업무시간 외 상시연결성이 일과 삶의 갈등에 미치는 영향관계를 살펴보기 위해 시도되었다. 분석 결과, IT업계 종사자들이 지각하고 있는 업무시간 외 상시연결성은 일과 삶의 갈등에 유의한 영향을 미치는 것으로 나타났다. 또한 업무시간 외 상시연결성은 IT분야 종사자들이 지각하는 직무불안정성의 모든 하위요인인 무력감, 직무상실 가능성에도 부정적 영향을 미친것으로 파악되었다. 직무불안정성요인이 일과 삶의 갈등에 미치는 영향 분석에서는 무력감 요인은 일과 삶의 갈등에 유의한 영향을 미치고 있었으나 직무상실 가능성 요인은 일과 삶의 갈등에 유의한 영향을 미치지 않는 것으로 나타났다. 아울러 직무불안정성(무력감, 직무상실 가능성)은 IT업계 종사자들이 지각하고 있는 업무시간 외 상시연결성과 일과 삶의 갈등의 영향관계에서 부분적 매개역할을 하는 것으로 나타났다.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제55권4호
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• pp.217-222
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• 2006

A distributed balun such as Marchand balun typically shows good phase and amplitude balances, but its size is somewhat large especially in lower frequency band. In contrast, a lumped balun has compact size but its performance is not good compared with that of a distributed one. In this paper the distributed-coupled line can be reduced effectively by using the lumped-distributed implementation. Designed balun has two coupled line of each ${\lambda}/72$ and shows magnitude balance of 0.05 dB, phase balance of $0.7^{\circ}$ in passband. Balanced-type filter is designed using balun and it has insertion loss of 8 dB, return loss of 7 dB, magnitude balance of 0.2 dB, and phase balance of $1.2^{\circ}$ in passband.

• Journal of information and communication convergence engineering
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• 제1권3호
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• pp.139-142
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• 2003

In this paper, we consider the factors that affect a conversion loss performance in designing a single balanced diode mixer integrated with IRF(Image Reject Filter), based on the embedded electrical wavelength placed between the IRF and mixer, diode matching and LO drive amplifier. To evaluate the conversion loss performance, we suggest two types of a single balanced mixer using 90 degree branch line coupler, microstrip line and schottky diode. One is only mixer and the other is integrated with IRF and LO drive amplifier. The measured results of a single balance diode mixer integrated IRF show the conversion loss of 8.5 dB and the flatness of 1 dB p-p from 21.2 GHz to 22.6 GHz with 10 dBm LO. The measured input PI dB and IIP3 are 7 dBm and 15 dBm respectively under the nominal LO power level of 10dBm. The LO/RF and LO/IF isolation are 22 dB and 50 dB, respectively.

• Journal of Nutrition and Health
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• 제28권8호
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• pp.749-758
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• 1995

In this study, the food intake, feces and urine of 16 primary school age boys and girls were collected and intake and excretion of sodium and calcium were measured. The boys and girls were 8-12 years old and measurement continued for four weeks during which they maintained their normal living pattern and body weight. Each boy's and girl's daily intake and excretion of sodium and calcium were measured and apparent digestibility and balance were also studied. The results were as follows. 1) Mean daily intake of sodium was 8.52$\pm$0.38g for the boys and 7.31$\pm$0.44g for the girls. The mean value in males was significantly higher than that in females(p<0.05). Mean daily in take of calcium was 411.0$\pm$16.0mg for the boys and 356.5$\pm$15.4mg for the girls. The mean value in males was significantly higher than that in females(p<0.01). 2) Mean daily fecal loss and apparent digestibility of sodium was 0.32$\pm$0.04g and 96% for the boys and 0.52$\pm$0.07g and 93% for the girls. The fecal loss mean value in males was significantly lower than that in females(p<0.05). Mean daily fecal loss and apparent digestibility of calcium was 299.8$\pm$8.3mg and 29% for the boys and 194.1$\pm$14.3mg and 46% for the girls. The fecal loss mean value in males was significantly higer than that in females(p<0.01). 3) Mean daily urinary loss of sodium was 6.55$\pm$0.50g and showed the positive balance of 1.65g for the boys and 5.67$\pm$0.20g and showed the positive balance of 1.12g for the girls. The urinary loss mean values of the two groups were not significantly different. Mean daily urinary loss of calcium was 42.8$\pm$5.1mg and showed the positive balance of 79.4mg for the boys and 25.0$\pm$1.64mg and showed the positive balance of 137.4mg for the girls. The urinary loss mean value in males was significantly higer than that in females(p<0.01).

• 한국임상보건과학회지
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• 제3권1호
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• pp.276-289
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• 2015

Purpose. To efficiently manage hospitals, this study aims to analyze the general characteristics, common-type balance sheet, common-type profit and loss statement and financial ratio of a tertiary general hospital and use the results as basic data for future hospital development by comprehending causes for problems and analyzing hospital management. Methods. By using information about a tertiary general hospital, located in A Metropolitan City, provided through Alio (www.alio.go.kr), a public organization information provider, Health Insurance Review & Assessment Service, and Ministry of Health and Welfare, this study used data during 3 years(2011 to 2013) by analyzing the general characteristics, common-type balance sheet, common-type profit and loss statement, industrial mean ratio and financial ratio of hospitals. Results. This study came to the following conclusions through the general characteristics, common-type balance sheet, common-type profit and loss statement, industrial mean ratio, financial ratio, circular chart and ROI by analyzing the data from 2011 to 2013. Conclusions. Overall, A Tertiary General Hospital showed an increase in fixed cost due to the construction of J Hospital and even in the size of capital and assets. It also showed an increase in medical profit, but the increase of its medical cost was higher, resulting in a financial loss. Especially, this hospital showed a slight decrease in net profit, featuring a reduction in inventory turnover. When the management of A Tertiary General Hospital was predicted based on such features, this hospital is expected to improve its profit structure through the opening of J Hospital, and it is necessary for this hospital to increase and sustain the turnover rate of inventories accumulated by managing them better.

• 한국전문물리치료학회지
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• 제18권1호
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• pp.18-27
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• 2011

This study was to investigate the positive effects of specially designed trunk-stabilization exercise program on lower extremity balance of elderly with history of leprosy. In this participants, lower extremity functions has been undermined by the development of damage in peripheral nerves. A total of 40 elderly with history of leprosy were divided into 2 groups of equal size ($n_{1,\;2}=20$): a group that participated in the exercise program, and a control group that did not exercise but did continue to engage in normal daily activities (including walking). The exercise group exercised for 60 minutes 2 days a week for 12 weeks. Static balance ability was measured by asking study participants to a one leg standing test: dynamic balancing ability was measured with a tandem walking test and a timed up-and-go test. The participants in the exercise program and the control group were tested before and after completion of the exercise program for comparison, and then divided according to their ability to feel sensory in the soles of their feet into the categories of normal sensory group: group with sensory loss in one foot: and group with sensory loss in both feet. The participants in the exercise program showed a positive, statistically significant difference in static balance compared with the control group (p<.05) as measured using the one leg standing test. Similarly, the participants in dynamic balance (p<.05) as measured using the tandem walking and timed up-and-go tests. Finally, these improvements were related to the severity of sensory loss in the soles of the feet for all study participants.

• 한국토양비료학회지
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• 제33권5호
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• pp.347-355
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• 2000

OECD농업/환경위원회 요청에 의하여 질소양분 균형지표 (Input-Output)설정을 위한 기초자료가 되는 비료소비량, 가축분생산량 생물적 질소고정량, 작물흡수량, 탈질량 및 작물부산물 회수량 등을 조사하였다. 질소균형지표는 1997기준, 탈질량을 포함할 경우와 포함하지 않을 때 각각 ha당 158kg, 211kg이었으나 OECD에서 요구하는 탈질량과 작물 부산물 회수량을 제외하는 경우는 250kg으로 산출되었다. 질소균형지표를 연도별로 비교해 보면 1985년 기준 $70{\sim}162kg\;ha^{-1}$에 비하여 1997년은 1.7~2.3배나 증가되었으며, 주요인은 가축분생산량 및 화학비료 소비량 증가와 경지면적 감소 때문이었다. 질소균형지표의 구성비율은 1997년을 기준으로 하여 질소의 Input에서 화학비료 59%, 가축분뇨 42%, 기타 5%이며 (가축분중 질소휘산량은 6%임), Output는 작물생산 73%, 부산물 회수량 23%, 목초생산 4%이였다. OECD사무국에서 검토한 자료(안)에 의하면 1995~1997년 기준 탈질량과 부산물회수를 통한 질소 질소제거량을 제외한 질소균형지표는 우리나라가 $253kg\;ha^{-1}$으로 네델란드의 $262kg\;ha^{-1}$ 다음으로 회원국중 두번째로 높으며, 일본은 $135kg\;ha^{-1}$이었다.

• Research in Vestibular Science
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• 제17권4호
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• pp.170-174
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• 2018

Epidural anesthesia has significantly advanced in neuraxial anesthesia and analgesia. It is used for surgical anaesthesia and treatment of chronic pain. Hearing loss during or after epidural anesthesia is rare, and it is known to occur by the change of the intracranial pressure. Cerebrospinal fluid is connected with perilymph in the cochlear and vestibule that is important to hearing and balance. If the intracranial pressure is abruptly transferred to the inner ear, perilymph can be leak, that called perilymphatic fistula, dizziness, and hearing loss can occur suddenly. We report a 65-year-old woman who presented with acute onset dizziness and hearing loss during the epidural nerve block for back pain, wherein we speculated a possibility of perilymphatic fistula as the mechanism of hearing loss and dizziness. The mechanism of dizziness and hearing loss was suspected with perilymphatic fistula.

• 제어로봇시스템학회논문지
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• 제16권9호
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• pp.827-832
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• 2010

Many researchers have tried to detect the falling and to reduce the injury associated with falling. Normally the method of detection of a loss of balance is more efficient than that of a compensatory motion in order to predict the falling. The detection algorithm of the loss of balance was composed of three main parts: parts of processing of measured data, construction of an internal model and detection of the loss of balance. The internal model represented a simple dynamic motion balancing with two rear legs of a four-legged chair and was a simplified model of a central nervous system of a person. The internal model was defined by the experimental data obtained within a fixed time interval, and was applied to the detecting algorithm to the end of the experiment without being changed. The balancing motion controlled by the human brain was improved in process of time because of the experience accruing to the brain from controlling sensory organs. In this study a reconstruction method of the internal model was used in order to improve the success rate and the detecting time of the algorithm and was changed with time the same as the brain did. When using the reconstruction method, the success rate and the detecting time were 95 % and 0.729 sec, respectively and those results were improved by about 7.6 % and 0.25 sec in comparison to the results of the paper of Ahmed and Ashton-Miller. The results showed that the proposed reconstruction method of the internal model was efficient to improve the detecting performance of the algorithm.