본 연구는 실습 교육기간에 따른 실습생의 STCW 협약에 의거한 해기능력 향상 정도를 파악하기 위해 H대학교 실습선에 승선 한 항해계열 학생들을 대상으로 50개의 평가항목에 대하여 자기평가 방법의 설문조사를 수행하였다. 이를 통해 해기기능과 해기능력의 기본적인 이해도를 평가하고, 승선 기간의 경과에 따라 이러한 이해도가 어떻게 변화하는지 심층분석을 실시하였다. 해기기능과 해기능력의 평가시기에 따른 이해도 변화 분석 결과, 해기기능의 경우 1학기와 2학기 승선그룹 모두에서 3차 평가로 갈수록 이해도가 대체로 향 상되는 것으로 나타났다. 또한, 각 학기 승선그룹별로 이해도가 낮은 분야가 도출되었으며, 실습선 교육 과정에 저조한 해기능력에 대한 추가적인 학습 계획이 필요할 것으로 판단된다. 본 연구로 도출된 실습선 교육 기간에 따른 해기능력 향상 정도에 대한 분석 결과는 추후 실습선 및 해사대학 교육 과정 개편에 활용될 수 있을 것으로 사료된다.

Gastrodia elata Bl. (GE) is a traditional herbal medicine used for the treatment hypertension and cerebrovascular disease. The purpose of this study was to investigate the antioxidant effect and blood pressure control ability of the GABA containing fermented Gastrodia elata Blume. The fermentation strain provided by Dr. Gi in Seoul National University is L. brevis GABA100, excellent strain of GABA production, which is involved in the ability to degrade gastrodin glycosides and activation of brain function. The Gastrodia elata Blume fermented by Lactobacillus brevis GABA 100 showed antioxidant activity (total phenolic contents, DPPH radical and ABTS anion scavenging activities) than unfermented Gastrodia elata Blume. In the spontaneously hypertensive rats (SHR), the concentration of fermented Gastrodia elata Blume was administered at 500, 1,000, and 2,000 mg/kg for 8 weeks. Systolic blood pressure decreased statistically significantly (p<0.05), especially 2 weeks after feeding fermented Gastrodia elata Blume. Also, it showed a significant decrease in low, medium, and high concentrations of fermented Gastrodia elata Blume at 4 weeks and 8 weeks. These results indicated that Gastrodia elata Blume fermented by the excellent strain of GABA production L. brevis GABA100 shows the antioxidant function and the effect of suppressing the increase in blood pressure.

Background: Therapeutic climbing training, which originated in Germany, is a wall-hanging rock climbing-based therapy to increase the body's coordination through movement of the upper and lower limbs against gravity. However, there are no studies examining the effectiveness of therapeutic climbing training to treat balance and gait ability in patients with chronic stroke. Objectives: To investigate therapeutic climbing training program on balance and gait in patients with chronic stroke. Design: Pretest-posttest control group design. Methods: Fourteen patients with chronic hemiplegic stroke participated. Participants were randomized into the therapeutic climbing training group (TCTG, n=7) and the standard rehabilitation program group (SRPG, n=7) group. All subjects participated in the same standard rehabilitation program consisting of 60 minutes 5 times a week for 6 weeks. TCTG participated additionally in the therapeutic climbing program consisting of 30 minutes sessions 3 times a week for the same 6 weeks. Berg balance scale (BBS), Gaitview Measure, Timed up and go test (TUG) were measured. Results: In the TCTG, revealed a statistical difference in BBS between the groups; in the difference of plantar pressure ratio in the static standing position revealed a statistical difference between the groups after training; the balance ability in the one-leg standing tests increased significantly; the time in TUG decreased significantly after training in both groups; The changes in the difference of dynamic plantar pressure ratio were reduced significantly in the TCTG. Conclusion: Therapeutic climbing training contribute to improve balance and walking function in patients with chronic stroke.

목적 : 몸의 균형 능력 저하는 낙상과 매우 밀접한 관계에 있어, 본 연구에서는 낙상 위험이 높은 노년층을 대 상으로 시력과 균형 능력간의 상관성을 분석하고자 하였다. 방법 : 성남시 S복지관에서 본 연구에 참여 의사를 밝힌 고령자 중 시야에 문제가 없는 고령자 총 24명(남4, 여20, 평균 나이 74.79±4.85세)을 대상으로 하였다. 시야검사는 OPTOS로 측정하였고, 시력은 ETDRS(early treatment diabetic retinopath study)시표를 이용하여 저대비(low contrast)시력과 고대비(high contrast)시력을 측정하였다. 균형 검사는 Tetra-ataxiometric posturography(Tetrax) 프로그램을 사용하여 안정성 지수, 푸리에 지수, 체중분포율을 산출하였다. 이후 산출된 균형능력 데이터와 시력 간에 상관분석은 SPSS 26.0 프로그램을 사용하여 시행하였다. 결과 : 시력과 관련된 NO자세와 PO자세에서 고대비시력은 푸리에지수(F6~F8)와 유의한 상관성을 보였고, 저 대비시력은 푸리에지수(F6)과 안정성지수와 유의한 상관성을 보였으며(p＜0.050), 고대비 및 저대비 시력이 감소 할수록 안정성지수와 퓨리에지수가 증가하여 균형능력이 저하되는 것으로 나타났다. 결론 : 시야이상이 없는 고령자에서는 시력이 낮으면 균형능력이 저하되기 때문에 낙상위험을 낮추기 위해서는 정기적인 시력검사와 굴절교정이 필요할 것으로 사료된다.

본 연구에서는 기능성 화장품의 소재로서의 금전초(Lysimachia christinae Hance)의 항산화와 항주름 효과를 조사하였다. 최근 천연물의 주름 개선 개발의 연구가 지속적인 관심을 받고 있어 본 연구를 통해 활성산소종(reactive oxygen species, ROS) 생성과 pro-collagen 합성 및 MMPs의 연관성에 대해 알아보았다. 금전초는 70% 에탄올(LcHE)과 열수(LcHW)로 각각 추출하여 실험을 진행하였다. HaCaT cells에서 LcHE가 LcHW보다 ROS 저해효능이 더 우수하고 세포독성 결과 250 μg/mL 농도 까지 독성을 보이지 않아 LcHE를 선택하여 주름 개선 소재연구를 진행하였다. pro-collagen 합성실험을 통하여 UVB에 의해 감소된 type-1 pro-collagen의 합성 활성을 유의미하게 확인하였다. Western blot 실험을 통하여 피부세포에서 UVB에 의해 유도된 MMPs 중 MMP-1 -3 -9의 증가를 억제함을 확인하였으며, Real time PCR을 통하여 상위단계인 mRNA levels에서도 MMP-1, MMP-2, MMP-3, MMP-9의 mRNA levels가 농도 의존적으로 유의미한 감소를 보여 추출물의 효능을 확인하였다. 위의 실험결과에 따라 UVB에 의한 주름생성과 피부 광노화를 효과적으로 예방할 수 있는 화장품의 천연소재로서의 이용이 기대된다.

본 연구는 유아교사의 조망수용능력이 정서조절능력에 미치는 영향을 알아보는 데 있다. 수도권 지역 유치원과 어린이집 교사 305명을 대상으로 조망수용능 력과 정서조절능력 검사를 실시하였다. 연구결과를 도출하기 위해 빈도분석, 일원분산분석, 상관분석, 다중회귀분석을 실시하였다. 이에 따른 연구 결과는 다음 과 같다. 첫째, 두려움, 흥분, 기쁨 상황의 정서 상황에서 유아교사의 조망수용능 력이 수준에 따라 감정조절능력의 하위요인들에서 유의한 차이가 나타났다. 둘째, 정서 상황에서 유아교사의 조망수용능력과 정서조절능력의 각 요인 간의 상 관관계를 살펴본 결과 조망수용능력의 하위 요인인 자기이해, 타인이해, 탈중심 화, 조직이해와 정서조절능력 간에는 모두 유의한 정적 상관으로 나타났다. 셋째, 정서 상황에서 유아교사의 조망수용능력의 하위요인인 자기이해, 타인이해, 탈중심화, 조직이해가 정서조절능력에 미치는 영향력을 살펴본 결과, 유아교사 의 조망수용능력이 정서조절에 미치는 영향은 두려움, 충격, 기쁨의 상황에서 유의하였으나, 흥분 상황에서는 유의하지 않았다. 조망수용능력 중 자기이해능 력은 두려움, 충격, 기쁨 상황에서 유아교사의 정서조절능력에 정적으로 유의한 영향을 미쳤고, 타인이해는 기쁨 상황에서 유아교사의 정서조절능력에 부적으 로 유의한 영향을 미쳤다.

PURPOSES : The purpose of this study is to analyze the impact of the level of the light-environment and the driver's visual ability on the change in the driver's perception of a forward curved section at night. The study also aims to identify factors that should be considered to ensure safety while entering curved sections of a road at night. METHODS : Data collected from a virtual driving experiment, conducted by the Korean Institute of Construction Technology (2017), were used. Logistic regression was applied to analyze the effects of changes in the light-environment factors (road surface luminance and glare) and the driver’s visual ability on a driver's perception of the road. Additionally, analysis of the moderated effect of visual ability on light-environment factors indicated that the difference in drivers’ visual abilities impact the influence of light-environment factors on their perception. A driver's ability to perceive, as a response variable, was categorized into 'failure' and 'success' by comparing the perceived distance and minimum reaction sight distance. Covariates were also defined. Road surface luminance levels were categorized into 'unlit road surface luminance' (luminance ≤ 0.1 nt) and 'lit road surface luminance' (luminance > 0.1 nt), based on 0.1 nt, which is the typical level observed on unlit roads. The glare level was categorized as 'with glare' and 'without glare' based on whether the glare was from a high-beam caused by an oncoming vehicle or not. The driver's visual ability level was categorized into 'low visual ability' (age ≥ 50) and 'high visual ability' (age ≤ 49), considering that after the age of 50, the drive’s visual ability sharply declines. RESULTS : The level of road surface luminance, glare, and driver's visual ability were analyzed to be significant factors that impact the driver's ability to perceive curved road sections at night. A driver's perception was found to reduce when the road surface luminance is very low, owing to the lack of road lighting ('unlit road luminance'), when glare is caused by oncoming vehicles ('with glare'), and if the driver's visual ability level is low owing to an older age ('low visual ability'). The driver's ability to perceive a curved section is most affected by the road surface luminance level. The effect is reduced in the order of glare occurrence and the driver's visual ability level. The visual ability was analyzed as a factor that impacts the intensity of the effect of change of the light-environment on the change of the driver's ability to perceive the road. The ability to perceive a curved section deteriorates significantly in 'low visual ability' drivers, aged 50 and above, compared to drivers with 'high visual ability,' under the age of 49, when the light-environment conditions are adverse with regard to the driver’s perception (road surface luminance: 'lit road surface luminance'→'unlit road surface luminance,' glare: 'without glare'→'with glare'). CONCLUSIONS : Supplementation, in terms of road lighting standards that can lead to improvements in the level of light-environment, should be considered first, rather than the implementation of restrictions on the right of movement, such as restricting the passage of low visual ability or aging drivers who are disadvantageous in terms of gaining good perception of the road at night. When establishing alternatives so that safety on roads at night is improved, it is necessary to consider improving drivers' perception by expanding road lighting installation. The road lighting criteria should be modified such that the glare caused by oncoming traffic, which is an influential factor in the linear change in perception, and the level of light-environment thereof are improved.

Background: Weakness of the trunk muscles decreases the trunk control ability of stroke patients, which is significantly related to balance and gait. Objectives: To compare the impact of diagonal pattern self-exercise on an unstable surface and a stable surface for trunk rehabilitation on trunk control, balance, and gait ability in stroke patients. Design: Nonequivalent control group design. Methods: Twenty four participants were randomized into the experimental group (diagonal pattern self-exercise while sitting on an unstable surface, n=12) and the control group (diagonal pattern self-exercise while sitting on a stable surface, n=12). All interventions were conducted for 30 minutes, three times a week for four weeks, and the trunk impairment scale (TIS), berg balance scale (BBS), functional gait assessment (FGA), and G-walk were measured. Results: All groups indicated significant increases in all variables (TIS, BBS, FGA, cadence, speed, stride length) after four weeks. The TIS, BBS, FGA, cadence, gait speed, and stride length group-by-time were significantly different between the two groups. Conclusion: We found that, in stroke patients, diagonal pattern self-exercise on an unstable surface is a more effective method for improving trunk control, balance, and gait ability than diagonal pattern self-exercise on a stable surface.

This study was conducted to separate microorganisms with excellent odor component decomposition ability from nature. Microorganisms growing sulfur and ammonia compounds as substrates were isolated and identified in the tidal flat of Suncheon Bay. The strain YUN4 cultured on ammonia and sulfur compound substrates was found to have 100% genetic homology to Streptomyces fulvissimus. The optimum growth temperature of YUN4 was 20oC to 40oC, and the optimum pH was investigated in the range of pH 5 to pH 9. In addition, in order to evaluate the ability to reduce odor, after mixing the culture strain with each concentration of 1%, 5%, and 10% in the malodor generating sample, the efficiency of malodor reduction was evaluated after 30 minutes. As a result, the ammonia decomposition efficiency was 82.4%~93.9%, and hydrogen sulfide was 88.7%~94.9%.

연구의 목적은 노인들이 여가활동에 활발히 참여하고 자기효능감과 대인관계 능력의 증진으로 심리적 안녕감을 향상시켜 건강한 노후를 살아가기 위한 실천적 방안 마련하고, 노인의 질을 향상 시키는데 있다. 노인의 여가활동 만족이 자기효능감과 대인관계 능력을 매개로 심리적 안녕감에 미치는 영향에 대하여 검증함으로써, 노인들이 여가활동에 활발히 참여하고, 자기효능감과 대인관계 능력의 증진으로 심리적 안녕 감을 증진 시켜 건강한 노후를 살아가기 위한 방안 마련에 있으며, 노인의 심리적 안녕감과 건강한 노후를 위해 노인의 여가활동 만족에 대한 중요성을 제기하였다. 고령사회를 접어든 우리나라는 정부 및 지방자치단체가 노인의 삶의 질 향상을 위한 노인의 욕구와 특성에 맞는 맞춤형 고령사회정책의 제도적 근거를 만들고 또한 다양한 프로그램을 개발하는데 과감한 재정적 투자와 함께 예비노인의 여가준비에 대한 정책적 인식전환이 필요하며, 예비 노인의 평생교육 차원에서 여가활동과 자원봉사활동을 진행 할 수 있는 서비스지원체계 수립이 필요하다.

본 연구의 목적은 사회공포증 수준에 따른 정서지각 편향성의 변화와 이 변화에 기여하는 시공간 주의배분능력에 대해 탐구하는 것이다. 이를 위해, 본 연구에서는 사회공포증 수준을 측정하기 위해 한국형 자기보고식 설문 검사인 사회공포증 검사(Korean version of social avoidance and distress, K-SAD)를 사용하였으며, 정서지각 편향성과 시공간 주의배분능력을 측정하기 위해 정서지각 과제(emotional perception task)와 UFOV 과제(useful field of view task)를 사용하였다. 본 연구에는 118명의 연구참가자가 참여하였고 응답을 성실하게 하지 않은 연구참가자들을 제외하여 107명(남: 94명, 여: 13명)의 자료가 분석되었다. 연구참가자들은 K-SAD 점수에 따라 세 집단으로 나뉘어졌다. 연구 결과, 정서지각과제에서 긍정적 정서지각 편향성은 사회공포증 수준이 높을수록 더 크게 나타났으며 UFOV 과제에서는 사회 공포증 수준이 높을수록 저하된 시공간 주의배분능력이 나타났다. 이러한 결과는 사회공포증 수준의 증가에 따라 나타나는 저하된 시공간 주의배분능력이 긍정적 정서지각 편향성에 부분적으로 기여할 가능성이 있다는 것을 시사한다.

Purpose: This study is examined the effects of simulation practice education with problem-based learning methods on nursing students' learning attitudes, learning satisfaction, critical thinking disposition, and problem-solving ability. Method: A quasi-experiment single group pretest-posttest design was adopted. Simulation education was conducted by utilizing problem-based learning methods to teach the following topics to nursing students enrolled in 4th grade in S city: respiratory, circulatory, and nervous system. The experiment was conducted for 12 weeks, from September to December, 2019. Paired t-test and Pearson product-moment correlation coefficient were used to analyze the collected data. Results: Learning attitude and problem-solving ability showed significant differences in the experiment. Among the sub-areas of problem-solving ability, there were significant differences in the following: problem recognition (p<.001), information gathering (p<.001), confident thinking disposition (p<.001), acceptance to carry out an adventure (p<.001), evaluation (p=.027), and feedback (p<.001). In addition, learning attitude showed significant positive correlations with learning satisfaction, critical thinking disposition, and problem-solving ability. Conclusion: The findings of this study suggest that, it is necessary to develop a variety of iterative studies and simulation scenarios to confirm the effectiveness of simulation training.

One of the promising candidates for accident-tolerant fuel (ATF), a ceramic microcell fuel, which can be distinguished by an unusual cell-like microstructure (UO2 grain cell surrounded by a doped oxide cell wall), is being developed. This study deals with the microstructural observation of the constituent phases and the wetting behaviors of the cell wall materials in three kinds of ceramic microcell UO2 pellets: Si-Ti-O (STO), Si-Cr-O (SCO), and Al-Si-Ti-O (ASTO). The chemical and physical states of the cell wall materials are estimated by HSC Chemistry and confirmed by experiment to be mixtures of Si-O and Ti-O for the STO; Si-O and Cr-O for SCO; and Si-O, Ti-O, and Al-Si-O for the ASTO. From their morphology at triple junctions, UO2 grains appear to be wet by the Si-O or Al-Si-O rather than other oxides, providing a benefit on the capture-ability of the ceramic microcell cell wall. The wetting behavior can be explained by the relationships between the interface energy and the contact angle.

With the rapid development of information technology and education informatization, the informational teaching ability of university teachers has become an indispensable ability of university teachers in the “Internet” era. Improving the ability of informational teaching and adapting to the development of the times have become the only way for the development of university teachers. This paper explores the countermeasures to the improvement of the teaching ability of teachers in colleges and universities. Firstly, the paper expounds the basic connotation of college teachers' informatization teaching ability: information teaching awareness and attitude, basic ability of informatization teaching, information technology and curriculum integration ability, evaluation and innovation ability, etc. Secondly, analyzes the main problems existing in the information teaching ability of Chinese college teachers. Teachers in universities and colleges have a certain awareness of using infoumation technology in teaching, but their ability to apply information teaching technology is poor, expecially in application of informatization teaching resources. On this basis, we find out the countermeasure form the perspectives of the government, schools and teachers, aiming to promote the connotative construction and characteristic development in private colleges.

연구목적 : 본 연구의 목적은 국내 작업치료 임상가의 응급처치 교육경험에 따라 실제 응급상황에서의 대처능력과 교육필요성을 조사하여 교육경험이 응급처치 대처능력과 교육필요성에 미치는 영향을 알아봄으로써 향후 작업치료사의 역량강화를 위한 응급처치 교육의 필요성을 제시하기 위함이다. 연구방법 : 본 연구의 대상자는 현재 의료기관 및 사회복지시설에서 근무하고 있는 작업치료 임상가로서 총 150명에게 본 연구에서 구성한 설문지를 배포 및 회수하였다. 설문지는 일반적 특성(6문항), 응급처치 교육경험(7문항), 각 응급상황에 따른 대처능력과 교육필요성(총 24문항)등 총 37문항으로 구성하였다. 응급처치 교육경험에 따른 응급상황별 대처능력과 교육필요성의 차이를 분석하기 위해 t-검정을 시행하였으며 두 종속변수 간의 상관성은 Pearson 상관분석을 시행하였다. 결과 : 응급처치 교육경험에 대한 빈도분석 결과, 전체 대상자(n=150) 중 115명(76.7%)이 응급처치 교육을 받은 경험이 있는 것으로 나타났다. 응급처치 교육경험 유무에 따른 응급처치 대처능력은 경험과는 상관없이 모두 ‘대처할 수 없다’라고 응답하였으며 ‘호흡장애(t=2.721, p<.05)’를 제외한 모든 항목에서 두 집단 간 통계학적으로 유의하지 않았다(p>.05). 교육필요성에 대한 집단 간 차이 분석에서는 심정지(t=-2.646, p<.05)와 경련 및 마비(t=4.17, p<.05) 항목에서만 통계학적으로 유의한 차이를 보였다. 두 종속변수간의 상관관계는 확률적으로 유의한 것으로 나타났다(p<.05) 결론 : 본 연구결과, 응급처치에 대한 교육경험이 있더라도 실제 응급처치 대처능력은 무경험자와 크게 다르지 않음을 알 수 있었다. 따라서 실제 응급상황에 적절히 대응할 수 있도록 보다 지속적이고 현장감있는 교육과 훈련이 필요할 것으로 사료된다.

Background: Foot drop is a common symptom after stroke and causes walking disorders. Therefore, its proper treatment is important for improving the walking ability of patients with foot drop. Objective: This study aimed to investigate the effects of electrostimulation during walking on the walking ability of patients with foot drop after stroke. Design: Quasi-experial study. Methods: The study enrolled 18 patients with foot drop after stroke. All subjects were assigned to the experimental or control group. The experimental group underwent electric stimulation during walking, while the control group used ankle foot orthoses. Both groups received treatment 20 minutes a day 5 times a week for 4 weeks. Outcome measures were assessed for walking and balance ability using the 10-m walking test (10MWT), 6-min walking test (6MWT), and Timed Up and Go test (TUG) Results: After the intervention, both groups showed significant improvements in 6MWT and TUG results. However, the experimental group showed significantly better improvement on all tests than the control group. Conclusion: The foot drop stimulator effectively improved the walking and balance ability of patients with foot drop after stroke.