• 한국작물학회지
• /
• 제50권3호
• /
• pp.156-160
• /
• 2005

본 연구에서는 발아력향상을 위해 담배품종 Nicotiana tabacum cv. KF109와 cv. KB108 종자에 종자전처리방법 중 하나인 solid matrix priming (SMP)처리를 하여 전처리효과를 알아보고 전처리과정 중 담배종자 발아시 에너지원으로 사용되는 지방산의 함량 변화를 조사한 결과 아래와 같다. 1. 발아시험결과 전처리에 의한 처리간 발아율 차이는 보이지 않았으나, 발아세, T50은 KF109의 경우 9일처리, KB108의 경우 7일처리에서 가장 높았다. 2. 종자내 지방산을 분석한 결과 처리기간동안 함량의 변화가 큰 지방산의 종류는 palmitic acid, stearic acid, oleic acid+elaidic acid, linoleic acid+linolelaidic acid, $\alpha-linolenic$ acid였다. 3. 지방산 종류에 따라 다소 차이가 있으나 각 지방산의 함량은 KF109의 경우 8일 또는 9일에서, KB108의 경우 6일 또는 7일까지 증가하였가 이후 감소하였다. 4. 특히 지방산 중 oleic acid+elaidic acid와 linoleic acid+linolelaidic acid 함량의 변화가 가장 컸으며 다른 지방산에 비하여 함량도 높았는데 KF109와 KB108품종의 경우 8일과 6일처리까지 각각 증가하여 최고에 이른 후 급격히 감소하는 결과를 보여 종자전처리 진행과정을 확인하는 데에 이용 가능할 것으로 판단된다.

• 한국치위생학회지
• /
• 제12권5호
• /
• pp.871-879
• /
• 2012

Objectives : The purpose of this study was to investigate the factors related to the awareness level of community water fluoridation program. Methods : 700 subjects were surveyed among the residents living in Incheon Metropolitan City. Data were collected on awareness of community water fluoridation program, general factors, oral health behavior, self-reported oral health and oral health interest. The factors related to the awareness level of community water fluoridation program were analyzed by t-test, a one way ANOVA and multiple linear regression analysis. Results : 1. Subjects' ages were 40~59 years, monthly average incomes were more than 3 million won and higher their educational levels had a higher awareness level of community water fluoridation program(p<0.01). 2. People who brushed their teeth more than three times a day, used oral hygiene devices, and had periodic oral examination and removed plaques were had higher awareness level of community water fluoridation program(p<0.01). Especially, the use of oral hygiene devices was the strongest factor in relation with the awareness level of community water fluoridation program(p<0.01). 3. People who had a fine self-reported oral health, highly interested in dental hygiene and made an effort to keep oral health were had higher awareness level of community water fluoridation program(p<0.001). Conclusions : The awareness level of community water fluoridation program was related to oral health behavior, self-reported oral health and oral health interest. So, in order to expand the areas for community water fluoridation program, it is important to educate to the right information about objectives, safety, dental caries preventing effect of the community water fluoridation program. And the education and publicity on general oral health will have an affirmative effect on expanding community water fluoridation program.

• 대한물리치료과학회지
• /
• 제26권3호
• /
• pp.23-36
• /
• 2019

Background: The purpose of this study was to investigate the effect of Plank exercise on unstable support surfaces on flexibility, abdominal muscle thickness and pain in patients with chronic back pain. Design: Randomized controlled trial. Methods: This study was performed on 16 patients with chronic back pain of ◯◯ military unit. Sixteen subjects were randomly assigned into two groups, an upper extremity trainer group (group I, n=8) and a lower extremity trainer group (group II, n=8). The subjects in group I carried out Flank exercise applying the stability trainer to their upper extremities and ones in group II carried out the same exercise applying the stability trainer to their lower extremities for 4 weeks. In order to ascertain the difference between two groups, flexibility, abdominal muscle thickness and pain were measured before and after the exercise. The flexibility was measured by sit and reach test, the thickness of the abdominal muscle was measured by using ultrasonic imaging equipment, and the pain was measured by the visual analogue scale. A paired t-test was utilized to compare changes in pain, abdominal muscle thickness and flexibility before and after flank exercise on unstable support surfaces. Analysis of Covariance (ANCOVA) was performed for ascertaining the significant differences between groups. The significance level was set by α=.05. Results: 1) The flexibilities of two groups were increased after the exercise (p<0.05). 2) In both groups, the thicknesses of rectus abdominis, external oblique abdominis, internal oblique abdominis, and transverse abdominis were all increased after the exercise (p<0.05). 3) The pains in both groups were decreased after the exercise (p<0.05). 4) In the comparisons of two groups, there were no differences in the flexibility, thickness of external oblique abdominis, internal oblique abdominis and transverse abdominis and pain (p>0.05). Whereas only thickness of Rectus abdominis was larger in the group I than in the group II (p<0.05). Conclusion: Plank exercise on the unstable support surface for 4 weeks resulted in increased flexibility, abdominal muscle thickness and pain reduction in patients with chronic back pain. Therefore, it is considered that performing flank exercise on the unstable supporting surface is suitable for the reduction of the pain in patients with chronic back pain. However, in this study, it is considered that continuous and diverse studies are needed because there was not a large difference between the groups when the upper or lower limbs are provided unstable support surfaces.

• 기술혁신학회지
• /
• 제13권1호
• /
• pp.140-159
• /
• 2010

본 연구는 벤처기업의 실패에 대한 다양한 분석을 통해 실패의 원인, 과정, 실패의 유형별 차이에 대한 분석을 시도했다. 벤처기업의 생존과 실패를 10여 년간에 걸쳐 추적조사하고 2차례에 걸친 설문조사를 통해 기업의 전략, 환경, 조직구조의 변화에 대해 종단적 자료를 확보했다. 그리고 그 변화에 따른 벤처기업의 실패 그리고 실패유형별 실패과정 및 실패원인에 대한 차이분석을 실시했다. 그 결과, 벤처기업의 실패는 다양한 원인에 의해서 발생될 수 있으며 그 실패의 과정에 있어서도 매우 차이가 많이 발생할 수 있음을 발견하였다. 또한 실패한 벤처기업들의 경우 실패의 다양한 경로가 존재할 수 있으며 그 경로에 따라 각기 다른 실패요인들이 실패에 중요한 영향을 미치는 것으로 나타났다. 이렇듯 본 연구는 벤처기업의 생존과 실패에 대해 사후적 분석을 시도하는 일반적인 연구들에 비해 벤처기업 실패의 동태적 과정을 파악하게 이해하게 한다는 점에서 분명 진일보한 것으로 평가될 수 있다. 또한 그러한 점에서는 본 연구는 기존 연구들과 차별성을 갖는다.

• 한국산학기술학회논문지
• /
• 제19권10호
• /
• pp.231-242
• /
• 2018

이 연구는 대기업 사무직 근로자에게 적용한 원예활동 프로그램의 정신적, 생리적 효과를 확인하기 위해서 시행되었다. 53명의 사무직 근로자가 연구에 참여하였다. 참여 대상자들은 2그룹(실험군과 대조군)으로 무작위 할당되었다. 무작위 할당은 Microsoft사의 Excel 2010 program RAND 함수를 이용하여 시행되었다. 8주 실험 동안 실험군에게 1회기 당 90분씩 원예활동 프로그램을 적용하였다. 대조군에게는 아무런 처치를 하지 않았다. 실험 전과 실험 8주 후에 모든 대상자들의 변수들(스트레스, 우울, 혈당, 총콜레스테롤, HDL-C, LDL-C)을 측정하였다. 실험 전부터 실험 완료 후까지 변수들의 변화가 계산되었다. 자료는 2014년 7월부터 9월까지 수집되었다. SPSS 21.0이 통계 분석에 이용되었다. 원예활동 프로그램이 우울에 긍정적인 효과를 가졌다(z=-4.57, p< .000). 결론은 원예활동 프로그램은 우울을 향상시키는 긍정적인 효과를 가진다는 것이다. 원예활동 프로그램이 사무직 근로자의 정신 건강 증진을 위한 보완대체요법으로 활성화되기를 기대한다.

• 한국생활과학회지
• /
• 제8권2호
• /
• pp.255-273
• /
• 1999

The purpose of this study was to examine the relationship between characteristics of personality and respondent characteristics of Kinetic Family Drawing for young children. The subjects were 170 children(110 boys and 60 girls). The personal interview contained Personality Characteristic Test for young children(In-Sub Song, 1993) and Kinetic Family Drawing Test(Burns and Kaufman, 1982). Results of the test were analyzed by t-test and ANOVA by SAS program. Results are followings. First, chileren's sex and the general tendency of personal characteristic showed significant difference in the emotional personality among 4 personality characteristics. Girls show more positive tendency than boys in moral, physical, appearance and feature which expressed personal feeling and emotion. Also, girls showed more positive tendency than boys in personal characteristic which showed physical ability. Second, Children's sex and individual characteristic in Kinetic Family Drawing respondent characteristic showed significant difference in own's arm length. Also, Using a rare of paper and chapter 1 of the power among the family showed significant difference in styles and symbols. The boys drew lengther arms compared with their height than the girls. The girls were less complicative, anxious, comparative and aggressive for their family. Third, As a result of the study about the relationship between 4 personal characteristics of children and individual's behavior in Kinetic Family Drawing respondent characteristic, the significant difference is showed in academic personality and social personality had higher completion of their father's feature and drew bigger feet. In socal personality, negative behavior than positive children. Fourth, As a result of the study about the relationship between 4 personal characteristics of children and individual's characteristic, the significant difference were found in academic personality, social personality, family personality and emotional personality. Children with negative academic personality drew longer arms than children with positive academic personality, social personality and family personality. Also, Children with negative emotional personality drew more siblings than children with positive emotional personality. Fifth, The academic personality and the social personality had significant difference in the relationship between 4 personal characteristics of children and dynamics. In social personality, normal children were more tendencious to look at the important person with their mother's direction than positive children. Sixth, In terms of the relationship between 4 personal characteristics of children and mode, academic personality and family personality showed significant difference. Children with negative academic personality used more edge of papers than children with positive academic personality and children with positive academic personality and children with negative family personality fold more papers than children with positive family personality. At last, there were no significant difference between 4 personal characteristics of children and styles as well as symbols.

• 유기물자원화
• /
• 제21권3호
• /
• pp.64-73
• /
• 2013

가축분뇨 처리시스템에 대한 환경영향을 분석하기 위하여 전과정 평가방법을 적용하였다. 전과정평가의 첫 번째 부분은 사용될 분석 항목을 구성하는 것으로, 가축분뇨 처리시스템에 대한 유입 및 배출에 대한 항목이다. 전과정 영향평가를 위한 다음 단계로서 전체 환경부하를 최종적으로 하나의 지수로 통합하기 위하여, 특정 항목에 대한 자료를 취합하고 분석하는 것이다. 전과정 영향평가를 위해, Eco-indicator 95 방법은 체계화 되었으며, 규칙적으로 적용된 영향평가 방법이기 때문에 선택하였다. 전과정 영향 분석을 위한 실례로서 호기 및 혐기소화 시스템과 같은 두 종류의 돈분 처리시스템을 선정하였다. 돈 분뇨 처리시스템에 대한 농업환경영향을 평가한 항목을 확립하였고, 혐기소화시스템에서는 전 인산 배출이 높았으며, 호기소화시스템에서는 이산화탄소 배출이 높은 것으로 관측되었다. 돈분 1ton을 처리하는데 관련된 돈분처리시스템에 대한 환경영향 평가에서 Eco-indicator 수치에 따르면, 호기소화 시스템에 있어 지구온난화 및 토양산성화에서 음의 지수를 보인 반면 혐기소화시스템은 수계 부영양화 부분에서 비교적 높은 양의 지수를 보였다.

• Smart Structures and Systems
• /
• 제25권4호
• /
• pp.487-499
• /
• 2020

This paper proposes a novel approach to model updating for a large-scale cable-stayed bridge based on ambient vibration tests coupled with a hybrid metaheuristic search algorithm. Vibration measurements are carried out under excitation sources of passing vehicles and wind. Based on the measured structural dynamic characteristics, a finite element (FE) model is updated. For long-span bridges, ambient vibration test (AVT) is the most effective vibration testing technique because ambient excitation is freely available, whereas a forced vibration test (FVT) requires considerable efforts to install actuators such as shakers to produce measurable responses. Particle swarm optimization (PSO) is a famous metaheuristic algorithm applied successfully in numerous fields over the last decades. However, PSO has big drawbacks that may decrease its efficiency in tackling the optimization problems. A possible drawback of PSO is premature convergence leading to low convergence level, particularly in complicated multi-peak search issues. On the other hand, PSO not only depends crucially on the quality of initial populations, but also it is impossible to improve the quality of new generations. If the positions of initial particles are far from the global best, it may be difficult to seek the best solution. To overcome the drawbacks of PSO, we propose a hybrid algorithm combining GA with an improved PSO (HGAIPSO). Two striking characteristics of HGAIPSO are briefly described as follows: (1) because of possessing crossover and mutation operators, GA is applied to generate the initial elite populations and (2) those populations are then employed to seek the best solution based on the global search capacity of IPSO that can tackle the problem of premature convergence of PSO. The results show that HGAIPSO not only identifies uncertain parameters of the considered bridge accurately, but also outperforms than PSO, improved PSO (IPSO), and a combination of GA and PSO (HGAPSO) in terms of convergence level and accuracy.

• Asian-Australasian Journal of Animal Sciences
• /
• 제28권11호
• /
• pp.1583-1591
• /
• 2015

The present study was conducted to determine the effect of lipid sources with different fatty acid profiles on nutrient digestion and ruminal fermentation. Ten rumen and duodenal fistulated Nellore steers (268 body weight${\pm}27kg$) were distributed in a duplicated $5{\times}5$ Latin square. Dietary treatments were as follows: without fat (WF), palm oil (PO), linseed oil (LO), protected fat (PF; Lactoplus), and whole soybeans (WS). The roughage feed was corn silage (600 g/kg on a dry matter [DM] basis) plus concentrate (400 g/kg on a DM basis). The higher intake of DM and organic matter (OM) (p<0.001) was found in animals on the diet with PF and WF (around 4.38 and 4.20 kg/d, respectively). Treatments with PO and LO decreased by around 10% the total digestibility of DM and OM (p<0.05). The addition of LO decreased by around 22.3% the neutral detergent fiber digestibility (p = 0.047) compared with other diets. The higher microbial protein synthesis was found in animals on the diet with LO and WS (33 g N/kg OM apparently digested in the rumen; p = 0.040). The highest C18:0 and linolenic acid intakes occurred in animals fed LO (p<0.001), and the highest intake of oleic (p = 0.002) and C16 acids (p = 0.022) occurred with the diets with LO and PF. Diet with PF decreased biohydrogenation extent (p = 0.05) of C18:1 n9,c, C18:2 n6,c, and total unsaturated fatty acids (UFA; around 20%, 7%, and 13%, respectively). The diet with PF and WF increased the concentration of $NH_3-N$ (p<0.001); however, the diet did not change volatile fatty acids (p>0.05), such as the molar percentage of acetate, propionate, butyrate and the acetate:propionate ratio. Treatments PO, LO and with WS decreased by around 50% the concentration of protozoa (p<0.001). Diets with some type of protection (PF and WS) decreased the effects of lipid on ruminal fermentation and presented similar outflow of benefit UFA as LO.

• 한국산학기술학회논문지
• /
• 제18권11호
• /
• pp.556-563
• /
• 2017

본 연구는 장애인거주시설의 최일선에서 장애인에게 서비스를 제공하고 있는 생활재활교사들의 인권에 대한 인식정도와 실행도, 중요도와 실행도의 차이를 살펴봄으로써 장애인거주시설의 생활재활교사들의 인권실천의 전략을 제안하고자 하였다. 이를 위해 부산지역 장애인거주시설 생활재활교사 344명을 대상으로 설문조사를 하였고, 중요도-실행도 분석(Importance-Performance Analysis: IPA)을 실시하였다. 그 결과는 첫째, 장애인 인권의 중요도가 실행도에 비해 높게 나타났다. 둘째, 세부영역별로 거주공간 공개시 동의, 선거권 보장은 실행도가 중요도에 비해 높게 나타났고, 종교적 활동 보장, 체벌금지, 시설 감시체계 강화, 환경개선 및 프로그램 강화를 제외하고 나머지 모든 항목은 중요도가 실행도에 비해 높게 나타났다. 셋째, IPA분석에 따라 분석 매트릭스별로 실천전략을 도출하였다. 특히, 실천전략과 관련하여 중요도는 높고 실행도도 높은 1사분면의 '지속유지영역'에 도출된 자유로운 연락을 포함한 10가지 항목과 중요도는 높고 실행도는 낮은 2사분면의 '집중노력영역'에 도출된 시설경영방침 개선과 중요도는 낮은데 실행도는 높은 4사분면의 '과잉투자영역'에 도출된 체벌 금지와 시설감시체계 강화에 대해 집중 논의하였다.