• 대한공업교육학회지
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• 제41권1호
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• pp.44-67
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• 2016

이 연구의 목적은 공업계 고등학생들의 회복탄력성, 전공만족도, 취업준비도간의 구조적 관계를 구명하는 것이다. 이 연구의 대상은 공업계 고등학생이며, 440명의 공업계 고등학생들을 조사대상으로 선정하였다. 조사도구로는 설문지를 활용하였으며, 회수된 409부 중 불성실 응답을 제외한 391부를 분석에 활용하였다. 이 연구의 결과는 다음과 같았다. 첫째, 공업계 고등학생들의 회복탄력성은 높았으며, 영역별로는 흥미와 관심의 다양성이 가장 높았으며, 감정조절이 상대적으로 가장 낮았다. 그리고 공업계 고등학생들의 일반 특성에 따른 차이를 알아본 결과 마이스터고 학생이 특성화고 학생보다, 남학생이 여학생보다, 교과성적이 높은 학생이 회복탄력성이 더 높았다. 둘째, 공업계 고등학생들의 전공만족도는 보통이었으며, 영역별로는 전공 전망이 가장 높았으며, 사회차원 만족이 상대적으로 가장 낮았다. 그리고 공업계 마이스터고 학생이 특성화고 학생보다, 남학생이 여학생보다, 교과성적이 높은 학생이 전공만족도가 더 높았다. 셋째, 공업계 고등학생들의 취업준비도는 보통이었으며, 하위 영역 중 취업태도가 매우 높았으며, 직무수행능력과 취업정보는 보통이었다. 그리고 공업계 마이스터고 학생이 특성화고 학생보다, 남학생이 여학생보다, 교과성적이 높은 학생이 취업준비도가 더 높았다. 넷째, 공업계 고등학생들의 회복탄력성은 직접적으로 학생들의 취업준비도에 영향을 미칠뿐 아니라 전공만족도를 매개로 하여 취업준비도에 영향을 주었다. 그리고 다중집단분석을 통하여 공업계 고등학생들의 회복탄력성과 전공만족도, 취업준비도의 관계는 마이스터고와 특성화고 모두에 적용되는 모형임이 확인되었다.

• 성인간호학회지
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• 제17권5호
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• pp.783-792
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• 2005

Purpose: This study was conducted to meta-analyze the effects of hardiness on health-related variables. Method: After review of 19 studies performed by Korean nurses, research variables, statistical data(r or F), and other methodological data were extracted and coded. Research variables were categorized under 5 groups such as health-related behavior, well-being, adaptation, stress, and support according to conceptual similarity. Using SAS program, 20 research variables and 34 effect sizes were calculated after eliminating heterogeneous data by Q-test, Results: Effects of hardiness on whole research variables was .512 and ranged from .322 to .643 by categories. The greatest effect was obtained from well-being category, whereas the smallest effect from stress category. All effect sizes were statistically significant. But fail-safe numbers were small and failed to achieve reasonable tolerance level. Conclusion: Results of meta-analysis indicated that hardiness has a moderate effect on health-related variables. But for improving the reliability of the results by minimizing publication bias, the more hardiness studies should be done.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2001년도 가을 학술발표회 논문집
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• pp.537-544
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• 2001

Bridge dynamic behaviors are examined under seismic excitations including the local scour effect. The corresponding simplified mechanical model, which can also consider the effect of other influence elements, is proposed to simulate the bridge motions. The scour depth around the pier is estimated by the CSU equation recommended by the HEC-18, and the local scour effect upon global bridge motions is then investigated by applying various foundation stiffness based upon the reduced embedded depths. From the results, it is found that seismic responses of a bridge with the same scour depth level for both piers increase as the scour depth increase due to the local scour effect. The scour effect is found to be significant under weak excitations and still to be quite notable even for moderate excitations.

• 한국식품영양과학회지
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• 제26권6호
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• pp.1258-1267
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• 1997

Corbon dioxide id effective for extending the shelf-life of perishable foods by retarding microbial growth. The overall effect of carbon dioxide is to increase both the lag phase and generation time of microorganisms. However, the role of carbon dioxide in affecting the growth and metabolism of any given microorganisms is not clear yet, although its inhibitory effect is generally found at moderate to high concentrations. Systematic studies of the effects of carbon dioxide on microorganisms are therefore warranted. It is also necessary to understand the role of carbon dioxide in the preservation of foods as well as the control by carbon dioxide of fermentations of biotechnological importance. In this review, the antimicrobial effect of carbon dioxide on microorganisms is investigated in terms of its gas and solution properties, inhibition of microbial growth and specific metabolic processes, perturbation of membrane structure.

• 한국자원식물학회지
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• 제35권6호
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• pp.713-719
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• 2022

Platycodon grandiflorum and Glycyrrhiza uralensis contain several bioactive compounds, such as saponin, oleanolic acid, and flavone. P. grandiflorum and G. uralensis have traditionally been used to treat disorders related to blood pressure, diabetes, and counteracting poison, and they have antinociceptive and antiinflammatory properties. However, the validity of complex saponin's vasodilatory effect has not been scientifically investigated. Therefore, this study explores the vasodilatory effect of complex saponin extracted from P. grandiflorum and G. uralensis mixture extract on rabbit carotid arteries. To this end, arterial rings with intact or damaged endothelium were used in an organ bath experiment and contracted by endothelin. Complex saponins, the major active constituents of P. grandiflorum and G. uralensis mixture extract, exhibited a moderate vasodilatory effect on the rabbit's basilar arteries. Therefore, treatment with complex saponin extracted from P. grandiflorum and G. uralensis mixture extract may selectively accelerate cerebral blood flow through basilar arterial dilation. Overall, the findings suggest that the extracted complex saponins can serve as vasodilator sources.

• 대한치위생과학회지
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• 제6권1호
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• pp.65-76
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• 2023

연구의 배경 및 목적: 본 연구의 목적은 한국인에서 신체활동과 치주염 사이의 연관성을 조사하는 것이다. 연구방법: 국민건강영양조사 2012년과 2013년 자료를 활용하여 우리나라 성인 9,191명에 대해 분석하였다. 치주 상태 조사는 지역사회치주요양필요지수(Community Periodontal Index, CPI)를 이용하여 CPI 3과 4를 치주염으로 정의하였다. 신체활동은 단축형 국제신체활동설문(International Physical Activity Questionnaire-Short Form, IPAQ-SF)을 이용하여 걷기 활동, 중등도 활동, 격렬한 활동으로 분류하여 분석하였다. 주요 변수간의 연관성은 로지스틱 회귀분석을 적용하였고, 비만 변수에 대해 층화분석을 적용하였다. 모든 분석은 성별에 따른 신체활동 수준의 차이가 있으므로 남녀를 나누어 분석하였다. 결과: 남성에서 치주염 유병률은 33.9%, 여성에서 치주염 유병률은 22.2%였다. 격렬한 신체활동과 중등도 신체활동을 하는 여성그룹에서 치주염 유병률이 각각 28% (OR=0.72, 95% CI=0.54-0.95), 34% ((OR=0.66, 95% CI=0.44-0.98) 낮았다. 반면 남성에서는 유의한 연관성을 보이지 않았다. 비만인 여성그룹에서는 중등도 활동을 한 그룹에서 65% (OR=0.35, 95% CI=0.18-0.67)의 더 높은 신체활동 감소와 연관성이 있었다. 결론: 본 연구조사 결과 중등도 신체활동은 치주염과 음의 연관성(inverse association)이 있다는 것을 보여주었다. 비만 여성에서는 중등도 신체활동이 치주염과 독립적으로 연관성이 있고 비만 변수가 효과변경인자(effect modifier)가 된다는 것을 확인하였다.

• 운동영양학회지
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• 제16권2호
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• pp.65-71
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• 2012

Oxygen is the final acceptor of electron transport from fat and carbohydrate oxidation, which is the rate-limiting factor for cellular ATP production. Under altitude hypoxia condition, energy reliance on anaerobic glycolysis increases to compensate for the shortfall caused by reduced fatty acid oxidation [1]. Therefore, training at altitude is expected to strongly influence the human metabolic system, and has the potential to be designed as a non-pharmacological or recreational intervention regimen for correcting diabetes or related metabolic problems. However, most people cannot accommodate high altitude exposure above 4500 M due to acute mountain sickness (AMS) and insulin resistance corresponding to a increased levels of the stress hormones cortisol and catecholamine [2]. Thus, less stringent conditions were evaluated to determine whether glucose tolerance and insulin sensitivity could be improved by moderate altitude exposure (below 4000 M). In 2003, we and another group in Austria reported that short-term moderate altitude exposure plus endurance-related physical activity significantly improves glucose tolerance (not fasting glucose) in humans [3,4], which is associated with the improvement in the whole-body insulin sensitivity [5]. With daily hiking at an altitude of approximately 4000 M, glucose tolerance can still be improved but fasting glucose was slightly elevated. Individuals vary widely in their response to altitude challenge. In particular, the improvement in glucose tolerance and insulin sensitivity by prolonged altitude hiking activity is not apparent in those individuals with low baseline DHEA-S concentration [6]. In addition, hematopoietic adaptation against altitude hypoxia can also be impaired in individuals with low DHEA-S. In short-lived mammals like rodents, the DHEA-S level is barely detectable since their adrenal cortex does not appear to produce this steroid [7]. In this model, exercise training recovery under prolonged hypoxia exposure (14-15% oxygen, 8 h per day for 6 weeks) can still improve insulin sensitivity, secondary to an effective suppression of adiposity [8]. Genetically obese rats exhibit hyperinsulinemia (sign of insulin resistance) with up-regulated baseline levels of AMP-activated protein kinase and AS160 phosphorylation in skeletal muscle compared to lean rats. After prolonged hypoxia training, this abnormality can be reversed concomitant with an approximately 50% increase in GLUT4 protein expression. Additionally, prolonged moderate hypoxia training results in decreased diffusion distance of muscle fiber (reduced cross-sectional area) without affecting muscle weight. In humans, moderate hypoxia increases postprandial blood distribution towards skeletal muscle during a training recovery. This physiological response plays a role in the redistribution of fuel storage among important energy storage sites and may explain its potent effect on changing body composition. Conclusion: Prolonged moderate altitude hypoxia (rangingfrom 1700 to 2400 M), but not acute high attitude hypoxia (above 4000 M), can effectively improve insulin sensitivity and glucose tolerance for humans and antagonizes the obese phenotype in animals with a genetic defect. In humans, the magnitude of the improvementvaries widely and correlates with baseline plasma DHEA-S levels. Compared to training at sea-level, training at altitude effectively decreases fat mass in parallel with increased muscle mass. This change may be associated with increased perfusion of insulin and fuel towards skeletal muscle that favors muscle competing postprandial fuel in circulation against adipose tissues.

• 복식문화연구
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• 제20권6호
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• pp.799-810
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• 2012

A girdle is a body-shaping article of clothing. The garment pressure of the girdle is considered an indispensable factor. The purpose of this study was to identify changes in body size and distribution of garment pressure after donning the girdle. The changes of body size and garment pressure were analyzed by body types. Korean women (n=19) in their 20s participated in the experiment. Their body types were classified according to four factors: the index value(hip girth-waist girth), and waist, hip, and thigh girths. The garment pressure was measured at 12 points. The results of this study showed that the hip and thigh girths were reduced mostly after donning the girdle. These values were 2.0~2.8cm and 1.7~2.3cm, respectively. The garment pressure was high at the waist band, the hip joint, and the gluteal furrow region at the back. The subjects whose waists, thighs, or hips were well developed showed great garment pressure in the hip area, but their hip girth decreased very little. The subjects with less developed or slim thighs or hips showed a slimming effect, with moderate pressure in the hip and thigh regions. These results show that the hip and thigh can be slimmed with moderate pressure by donning a thigh-length girdle. High garment pressure is not necessary for the girdle's body shaping effect. The hip area is hard to get body slimming effect with high garment pressure. The current girdle sizing system needs to be revised in order to lower garment pressure in the hip region. The researchers suggest using 3cm size intervals rather than 6cm size intervals for hip girth.

• 한국의류산업학회지
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• 제6권5호
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• pp.618-624
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• 2004

This study is to explore how consumers' needs for tactile cues affect their purchasing behaviors in the internet shopping mall. Since previous studies about internet shopping malls are mainly performed on the primary factors of perceived risk, there are insufficient studies of tactile cues for apparel products. Emphasis of this study is placed on verifying the following hypothesis; it is expected that consumers' needs for tactile cues affect apparel purchasing behaviors in internet shopping. The questionnaire was administered to 20 to 30 year old male and female respondents who are either students or businessmen living in the Busan area. 150 questionnaires were completed and collected for data analysis. The data were, using SPSS 10. 0 for Window, statistically analyzed by frequency and factor analysis for VARIMAX, Cronbach's coefficient and Linear regression analysis. Data were, using SPSS 10. 0 for Window, statistically analyzed by frequency and factor analysis for VARIMAX, Cronbach's coefficient, and ANOVA. The results of data analysis are as follows: First, the tactile cues negatively affect purchase intentions of consumers. This shows that apparel internet shoppers who have high desire for tactical cues tend to avoid purchasing products through the internet. Second, the factor analysis of the moderating effect on perceived risks shows that the perceived risks significantly moderate both the tactile cues and purchase intention of consumers. Third, analysis of purchased experience also shows that purchased experiences significantly moderate both the tactile cues and purchase intention.

• 한국콘텐츠학회논문지
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• 제11권5호
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• pp.393-402
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• 2011

본 연구목적은 국제결혼 이주여성의 자아존중감과 적응유연성 간 관계에서 심리적 행복감의 조절효과를 확인하는데 있다. 이를 위해 전라남도 지역 복지관과 다문화지원센터의 도움을 받아 총 148명을 대상으로 설문하였고, 이중 139부를 분석에 사용하였다. 연구결과 첫째, 국제결혼 이주여성의 자아존중감이 적응유연성에 유의한 영향을 미치는 것으로 조사되었다. 둘째, 자아존중감과 적응유연성 간 관계에서 심리적 행복감 즉, 세부적으로 생활만족도의 조절효과가 있는 것으로 나타났다. 본 연구결과에 기반하여 국제결혼 이주여성의 적응유연성 향상을 위해 실천적 제언을 하였다.