• 대한기계학회논문집B
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• 제26권1호
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• pp.74-81
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• 2002

Combustion phenomena in a sub-millimeter scale combustor have been investigated. To evaluate scale effect on flame propagation characteristics, a cylindrical combustion chamber with variable depth was built in-house. The combustor was charged with premixed gas of hydrogen and air and ignited electronically. A piezo electric pressure transducer recorded transient pressure after the ignition. Measurements were made at different test conditions specified with chamber depth and initial pressure as parameters. Visual observation was made through a quartz glass window on top side of the combustion chamber using high speed digital video camera. From the pressure data, available work was estimated and compared with energy input required for stable ignition. The preliminary results suggested that the net thermal energy release is sufficient to generate power and enables a combustor of the size in the present study to be used as the energy source of a micro power devices .

• 대한가정학회지
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• 제37권3호
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• pp.63-84
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• 1999

The purpose of this study was to explore how family type based on intra system dynamics explained housewives'objective and subjective family financial well-being. The data were collected by means of questionnaire distributed to a stratified sample of 662 housewives in Seoul who usually managers household finances. The questionnaire included family cohesion and adaptability scale, communication scale, financial management scale, and subjective family financial well-being scale. Frequency, percentile, mean, Х$^2$ Pearson’s correlation, one-way ANOVA, multiple regression were used to analyze the data. The study had resulted in five major findings: 1. Among four intra system dynamics elements were highly relationships 2. Families were categorized tv four types, named personal-oriented(N: 164), managerial-oriented(N=169), dynamics(N=154), and non-dynamic(N=134) family. 3. The four types of family were influenced tv age of housewives, duration of marriage, and job status of husbands. 4. The four types of family were significantly related with subjective family financial well-being. The personal-oriented family type was significantly related with objective family financial well-being. 5. The dynamic family type showed the highest effect of subjective family financial well-being. The personal-oriented family type showed the greatest effect of objective family financial well-being. The recommendation for future research and better ways to enhance level of intra system dynamics elements and family financial well-being.

• PNF and Movement
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• 제13권3호
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• pp.163-168
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• 2015

Purpose: The current study seeks to identify the effect of neck muscle strengthening exercise using proprioceptive neuromuscular facilitation (PNF) on the swallowing ability of patients diagnosed with dysphagia due to stroke. Methods: As a single case study, the current research conducted neck muscle strengthening exercise using PNF on the patient with dysphagia for 40 minutes, four times per week for a six-week period. At the same time, typical rehabilitation therapy for dysphagia was provided. This type of therapy included food-swallowing and the relation of the muscles surrounding the neck. The functional dysphagia scale and the penetration-aspiration scale were used to assess swallowing ability. Results: After the therapy, the functional dysphagia scale and the penetration-aspiration scale decreased by 18 points and 3 points, respectively, which proves the effectiveness of this type of therapy for dysphagia. Conclusion: The results of the current study indicate that neck muscle strengthening exercise using PNF reduces penetration-aspiration in patients with dysphagia, and that PNF can be clinically utilized to improve the swallowing ability of dysphagic patients.

• 한방재활의학과학회지
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• 제31권4호
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• pp.193-201
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• 2021

The aim of this study was to report the effect of Korean medicine treatment with scalp acupuncture of patient with lateropulsion, dizziness, headache caused by lateral medullary infarction. We treated the patient with scalp acupuncture, acupuncture, herbal medicine. Numeric rating scale (NRS), Korean version of berg balance scale (K-BBS), gait balance evaluation, dizziness handicap inventory (DHI), activities-specific balance confidence scale (ABC) and vestibular disorders activities of daily living scale (VADL) were used to evaluate symptoms. NRS of Lateropulsion, dizziness, headache were decreased. K-BBS score increased from 4 to 56, and in the gait balance evaluation, it returned to normal. DHI, VADL score were decreased and ABC score increased from 0 to 1,300. This case report shows that Korean medicine treatment with scalp acupuncture can be effective in lateral medullary infarction. However, further controlled studies are needed to confirm the effect of scalp acupuncture on such patients.

• 농업과학연구
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• 제45권4호
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• pp.871-878
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• 2018

The government of Gyeongbuk in Korea increased the financial input in the agricultural sector by 43% from 2008 through 2012. However, the productivity of the agricultural sector in Gyeongbuk rose only about 3.6% during the same period. This study evaluated the agricultural competitiveness of each city or county in Gyeongbuk using six evaluation indices (scale, productivity, finance input, location quotient, technical education, and total) and investigated the relationship between the indices and total values of agricultural productions. The results show that Sangju, Gyeongju, Andong, Uiseong, and Seongju have high competitiveness for the scale index. For the productivity index, Gimcheon, Mungyeong, Ulleung, Yeongju, and Seongju were highly evaluated. For the location quotient index, Yeongcheon, Uiseong, Cheongdo, Seongju, and Sangju have high competitiveness. Uiseong, Yeongdeok, Cheongsong, Gunwi, and Yeongyang were highly evaluated for the agricultural finance input index. For the agricultural technical education index, Chilgok, Sangju, Mungyeong, Uiseong, and Gyeongju have high competitiveness. Finally, Sangju, Euiseong, Yeongcheon, Gyeongju, and Andong were highly evaluated for the total competitive index, while Yeongdeok, Yeongyang, Goryeong, Uljin, and Cheongsong have a low competitiveness for the total competitive index. This study also found that out of five indices, scale, location quotient, and technical education indices have a positive and statistically significant effect on the total values of agricultural production. However, we did not find any statistically significant effect of the productivity and finance input indices on the total values of agricultural production. Hence, we can conclude that the government should focus their agricultural policy on scale, location quotient and education to improve total agricultural production.

• 대한암한의학회지
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• 제25권2호
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• pp.13-21
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• 2020

Objective: Most cancer patients suffer from various forms of pain. This study presents the case of a patient with hapatocellular carcinoma with abdominal pain treated by Daegunjoong-tang. Method: For 7 days, the patient was treated with Daegunjoong-Tang and Moxibustion. We planned to maintain moxibustion CV12(中脘), CV4(關元) for 20 minutes everyday. To evaluate the therapeutic effect, we used Visual Analogue Scale (VAS) and Clinical Opiate Withdrawal Scale (COWS). Results: After the treatments, Visual Analogue Scale (VAS) and Clinical Opiate Withdrawal Scale (COWS) score about abdominal pain are decreased. Conclusions: These results suggested that Daegunjoong-tang and Moxibustion have a beneficial effect on relieving abdominal pain caused by cancer.

• Nuclear Engineering and Technology
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• 제56권2호
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• pp.655-665
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• 2024

The objective of the present experimental study is to investigate the effect of inlet throttling on the thermohydraulic stability of a large scale water-based Reactor Cavity Cooling System (RCCS). The test was performed using the water-based Natural convection Shutdown heat removal Test Facility (NSTF) at Argonne, which represented a ½ axial scale and 12.5° sector slice of the full scale Framatome 625 MW_t SC-HTGR RCCS concept. A two-phase steady state was first established through direct condensate refill, followed by increased inlet throttling over 10 stages, corresponding to a loss coefficient K over the range of 0.05-653. With the inlet throttling gradually increased, the system experienced a unique transition process between stabilization and destabilization. Through a stability analysis, three instability mechanisms were identified in the present test, including a compound mechanism due to both natural circulation oscillations (NCOs) and density wave oscillations (DWOs), Type-II DWOs, and geysering.

• 재활치료과학
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• 제2권2호
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• pp.67-75
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• 2013

목적 : 본 연구의 목적은 편측무시 현상이 나타나는 뇌졸중 환자에게 본인이 선호하는 음악을 감상하게 하여, 편측무시 현상이 지속적으로 감소되는지를 알아보기 위한 것이다. 연구방법 : 본 연구는 편측무시 현상이 나타나는 한명의 대상에 대해 A-B 단일설계를 사용하여 2013년 6월에 4주간 주 3회씩 총 12회기를 실시하였다. 편측무시 현상은 선 이등분 검사와 캐서린 버지고 척도(Catherine Bergego Scale; CBS)를 사용하여 결과를 측정하였다. 결과 : 선 이등분 검사에서는 평균오차 범위가 기초선에서는 19.00%, 실험처치에서 9.67%로 감소되었다. 캐서린 버지고 검사는 총점이 기초선에서 17점, 실험처치에서 15점으로 약간의 감소를 보였다. 결론 : 본 연구의 결과를 볼 때, 음악 감상이 편측무시 현상의 감소에 영향을 미친다고 볼 수 있다.

• 한국보건간호학회지
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• 제15권2호
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• pp.249-261
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• 2001

Today's health care environment is rapidly changing and nurse administrators' leadership styles need to identify in nursing organization to achieve organizational objectives. By Bass(1985), transformational leadership stimulates the subordinates to be creative and achieve organizational objectives and is related to job satisfaction, job involvement, productivity, and organizational commitment. Transformational leadership process consists of charisma, intellectual stimulation, individual consideration. The purpose of this study was to identify the effect of transformational leadership and personal characteries on nurses' job involvement. The subjects for this study consisted of 594 nurses from 8 University Hospitals and General Hospitals. The data were collected by personal characteristics scale, transformational leadership scale, and job involvement scale. The factor analysis, Cronbach's alpha analysis, Pearson correlation analysis, multiple regression analysis and hierarchical multiple regression analysis were used for the statistical method. The results of this study were found that (1) charisma dimension of transformational leadership has positive influence on nurses' job involvement ; but another two dimensions (intellectual stimulation and individualized consideration) did not showed significant effect on job involvement (2) nurses' personal characteristic (internal locus of control) moderated the effect of transformational leadership on job involvement.

• Journal of Mechanical Science and Technology
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• 제18권8호
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• pp.1479-1489
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• 2004

The effect of fluctuation of Equivalence Ratio (ER) in a turbulent reactive field has been studied in order to check the global combustion characteristics induced by the local fluctuation. When the flow is premixed on a large scale, closer examination on a small scale reveals that local fluctuations of ER exist in an imperfectly premixed mixture, and that these fluctuations must be considered to correctly estimate the mean reaction rate. The fluctuation effect is analyzed with DNS by considering the joint PDF of reactive scalar and ER, followed by modeling study where an extension of stochastic mixing models accounting for the ER fluctuation is reviewed and tested. It was found that models prediction capability as well as its potential is in favor to this case accounting the local ER fluctuation. However, the effect of local fluctuation did not show any notable changes on the mean global characteristics of combustion when statistical independence between the reactive scalar and ER field is imposed, though it greatly influenced the joint PDF distribution. The importance of taking into account the statistical dependency between ER and combustible at the initial phase is demonstrated by testing the modeled reaction rate.