• Title/Summary/Keyword: 상호작용수준

Search Result 1,324, Processing Time 0.034 seconds

Effect of Iron on the Tocopherol and Free Unsaturated Fatty Acid Concentrations in Common Feed (철분이 사료내의 Vitamin E와 유리 불포화 지방산 함량에 미치는 영향)

  • Mo, Ki Chul;Huh, Rhin Sou;Kim, Sung Hoon;Do, Jae Cheul;Lee, Young Ho
    • Current Research on Agriculture and Life Sciences
    • /
    • v.4
    • /
    • pp.127-131
    • /
    • 1986
  • In order to know the effects of iron the lipid characteristics in common feed, vitamin E and free unsaturated fatty acid concentrations were determined using feeds with(uncommon) and without(common) water added. The vitamin E concentrations in common feed(P<.05) and uncommon one (P<.01) showed statistically continuous decreasing figure from 1.75mg/g(1 day) to 0.25mg/g(11 days). The free unsaturated fatty acid concentrations in common feed showed also statistically continuous decreasing figure from 23.8mg/g(control group) to 17.6mg/g(20% ferrous sulfate group) (p<.01). On the mean time, quantitative values in uncommon feed have shown statistically continuous decreasing figure from 23.9mg/g(control group) to 17.4mg/g(20% ferrous sulfate group) (P<.01). The concentrations of vitamin E and free unsaturated fatty acid in common feed was higher than those in uncommon one, but significant difference was not recognized. The interactions between time lapse and ferrous sulfate were recognized in respect to the vitamin E and free unsaturated fatty acid in common and uncommon feed.

  • PDF

The Analysis of Psychological Aspects Reflected on E-learning Programs in the U.S. (미국 이러닝 프로그램들에 반영된 심리적 특성 탐색)

  • Kim, Jong-Baeg;Choi, Hee Jun
    • Korean Journal of Comparative Education
    • /
    • v.18 no.4
    • /
    • pp.141-162
    • /
    • 2008
  • Many e-learning programs in Korea use lecture as a main instructional method. A meta-analysis study reports that e-learning programs using lectures were the most ineffective. In addition, many researchers in the field of distance education contend that the active participation of learners is the key to the success of e-learning. These imply why we can easily find many people who don't have good impression about e-learning. The quality of e-learning depends on the application of appropriate pedagogy. This study aims to present the implications for the improvement of e-learning programs in the Republic of Korea by analyzing the psychological characteristics reflected on the e-learning programs in the U. S. that have been improved through design research for a long time. The result shows that the e-learning programs in the U. S. have five major psychological aspects, i.e., reflective thinking, collaborative interaction, knowledge construction, situated action, and utilizing multiple representations. Consequently, this study suggests that e-learning programs in the Republic of Korea need to reflect learning principles such as learning by doing, situated learning, collaborative learning, learning with multiple representations in order to improve the quality.

Exploring perception and experience of non-majors about SW education using CQR (SW교육에 대한 대학 비전공자의 인식과 경험 탐색: CQR을 중심으로)

  • Oh, Bora;Lee, Jeongeun;Lee, Jeongmin
    • Journal of The Korean Association of Information Education
    • /
    • v.23 no.5
    • /
    • pp.395-413
    • /
    • 2019
  • The purpose of this study is to explore non-major students' perception and experiences in college software education. For this, we analyzed the reflection journals of 36 non-major students in D University based on the Consensual Qualitative Research(CQR). As a result, there was not general core concept to all students nor a typical core concept that appeared to more than 50% students. However, various variable core concepts could be derived. Overall, 57 variable concepts were derived from experience in SW education and 7 variable concepts for perception of SW education. Based on this result, we found many of non-major students feel difficulty from unfamiliarity to SW education. Also, many students have satisfaction in their perception to SW education about personalized learning that their professor provided in the class. Lastly, we conclude that a methodology for SW education needs to have a careful operation strategy and interactive design. Although this study has not been able to elucidate general core concepts that appear to all learners, it has significant implication in terms of providing various implicit core concepts and suggestions for effective software education for non-major students.

Pollution Characteristics of Water and Sediments for contaminated Agricultural Reservoirs (오염된 농업용저수지에서의 수질 및 퇴적물의 오염 특성)

  • Lee, Jin Kyung;Choi, Sun Hwa;Lee, Seong Houn
    • Proceedings of the Korea Water Resources Association Conference
    • /
    • 2016.05a
    • /
    • pp.500-500
    • /
    • 2016
  • 전국의 농업용 저수지 중 장기간 높은 유기물 및 영양염의 농도로 인해 부영양화가 우려되는 71개 저수지에 대하여 수질오염 및 퇴적물오염 특성을 분석하였다. 수질오염 특성 분석 결과, 평균농도가 COD 11.7 mg/L, TOC 6.8 mg/L, TN 1.844 mg/L, TP 0.101 mg/L, SS 18.1 mg/L, Chl-a 57.3 mg/$m^3$ 로 분석되었다. 조사 대상 저수지 71개 지구 중 COD 46.3 %, TN 84.4 %, Chl-a 63.7 %가 농업용수 수질기준 초과 저수지로 조사되었다. 또한 연구 대상지구의 주요 오염원으로 생활계오염원 31개 저수지의 COD 11.1 mg/L이며, 축산계오염원 40개 저수지의 COD 12.2 mg/L로 나타났다. 각 항목의 수질 결과에 대한 평균 오염도를 분석한 결과, 축산계 오염원이 생활계 오염원 저수지보다 부유물질(SS)을 제외하고 모든 항목에서 오염도가 높게 나타났다. 그러나 TN, TP는 오염원에 따라 크게 차이를 보이지는 않았으며, 축산계 오염원 저수지의 수질 오염도는 모든 항목에서 농업용수 수질기준을 초과하였다. 장기적인 수질오염 저수지에 대하여 퇴적물의 오염 특성을 조사하였으며, 퇴적물오염으로 인한 수질오염 영향관계를 조사 분석하였다. 퇴적물 오염 특성 분석 결과, 강열감량 10.5 %, 총질소 3,480 mg/kg, 총인 1,299 mg/kg으로 오염 수준이 전체적으로 높게 조사되었다. 생활계오염원 31개 저수지의 강열감량 9.8 %, 총질소 2,711 mg/kg, 총인 1,178 mg/kg이며, 축산계오염원 40개 저수지의 강열감량 11.1 %, 총질소 4,076 mg/kg, 총인 1,393 mg/kg로 나타났다. 수질 중 COD, TOC, TN, TP, SS, Chl-a의 오염도와 퇴적물중 강열감량, 총질소, 총인의 각 항목간 상관관계를 분석한 결과, 퇴적물 내 다른 항목에 비해 SS를 제외하고 총인이 모든 수질 항목과 정(+)의 상관관계를 나타내었다. 특히 퇴적물 중 총인과 수질의 TP가 가장 높은 상관성을 나타내는 것으로 조사되었는데, 이는 퇴적물 내 총인이 수질오염에 가장 많은 영향을 줄 수 있으며, 상호작용이 있음을 의미한다고 하겠다. 또한 수질의 TP 오염도에 따라 부영양화 및 조류의 활성화가 크게 영향을 받는다는 기존의 연구결과에 의하면 퇴적물 내 총인의 오염도가 부영양화와 조류 번식에 영향을 크게 미칠 것이라 판단된다.

  • PDF

Design and Implementation of License Web Courseware based on the Cognitive Apprenticeship Theory (인지적 도제이론에 기반한 자격증 웹 코스웨어 설계 및 구현)

  • Kim, Nam-Ju;Kang, Yun-Hee;Kim, Deok-Hwan;Lee, Ju-Hong
    • Journal of the Korea Society of Computer and Information
    • /
    • v.11 no.3
    • /
    • pp.21-30
    • /
    • 2006
  • This study applies the cognitive apprenticeship theory a representative learning theory of constructivism. to design and create a web courseware for data device operator license. to enable research that begins with peripheral participation in Problem solving and ends with full participation and initiative, to act as a medium for assisting students in learning, to enable adaptation to actual situations through simulation studies, to allow aggressive interaction, and to help reinforce the level of data processing with regard to learning. The student was made to evaluate learning materials at real time for feedback on insufficient areas, to enable effective learning. The study was done by offering a web courseware without applying the cognitive apprenticeship theory and a web courseware with the cognitive apprenticeship theory, which was followed by an evaluation on study achievement level and learning behavior and then a survey was done after the evaluations. The results of this study were first, the learning group with web courseware applying cognitive apprenticeship theory showed more effect in improving learning achievement than the group with web courseware without the cognitive apprenticeship theory. Secondly, learning with web courseware applying cognitive apprenticeship theory was more effective for improving learning behavior.

  • PDF

Effects of 16-week Combined Exercise on Blood Dopamine Concentrations, Functional Fitness and Qol in Patients with Parkinson's Disease (16주간의 복합운동이 파킨슨병 환자의 혈중 도파민 농도, 기능적 체력 및 삶의 질에 미치는 영향)

  • Kim, Do-Yeon;Park, Chan-Ho;Kim, Ji-Sun;Cheon, Ji-Un
    • Journal of the Korean Applied Science and Technology
    • /
    • v.38 no.4
    • /
    • pp.1081-1092
    • /
    • 2021
  • The purpose of the study was to examine the effects of the 16-week combined exercise on the blood dopamine concentrations, functional fitness and QOL in patients with parkinson's disease. To this end, 24 persons parkinson's disease in over 60 years old who participated in this study were classified in to the exercise group(n=12) and control group(n=12), and then the exercise group was twice a week for 16-weeks, 70 min per session combined exercise was applied. The test dada were analyzed by two-way repeated measures ANOVA, paired t-test, and independent t-test. The alpha level of .05 of significance. As a result, first, parkinson's disease who regularly participated in the combined exercise significantly increased blood dopamine concentrations(p<.001). Second, parkinson's disease who regularly participated in the combined exercise significantly improved grip strength(p<.001), arm curl(p<.001), stand up and sit down a chair(p<.001), 3m walk and come back(p<.01). Third, parkinson's disease who regularly participated in the combined exercise significantly improved QOL(p<.001). Thus, the combined exercise had the positive effects and may be helpful to increased the blood dopamine concentration and improved functional fitness and QOL.

Effects of combined exercise on the blood inflammatory factors, DHEA-s and arterial stiffness of elderly women (복합운동이 고령여성의 혈중 염증인자, DHEA-s 및 동맥경직도에 미치는 영향)

  • Ha, Soo-Min;Kim, Jung-Sook;Kim, Ji-Hyeon;Kim, Do-Yeon
    • Journal of the Korean Applied Science and Technology
    • /
    • v.35 no.4
    • /
    • pp.1096-1107
    • /
    • 2018
  • The purpose of this study was to investigate the effects of combined exercise on blood inflammatory factors, DHEA-s and arterial stiffness in elderly women. The subjects were 42 elderly females volunteers, aged 70 to 85 years, composed of the combined exercise group (n=21) and control group (n=21). The 60 minute combined exercise program(aquarobics 1 time/week, strength exercise 2 times/week) was performed 3 times per week for 12 weeks, and the intensity was progressively increased every 4 weeks(1-4 weeks: RPE 12 to 13, 5-8 weeks: RPE 13 to 14, 9-12weeks: RPE 14 to 15). The test data were analyzed by two-way repeated measures ANOVA, paired t-test, independent t-test and the alpha level of .05 was set for all tests of significance. As a result, the combined exercise for 12 weeks reduced the inflammatory response of elderly women, and DHEA-s was found to have a positive effect on aging hormone. The arterial stiffness decreased the central arterial blood pressure (systolic and diastolic), prevented the increase of the pulse pressure and the wave increase index, and decreased the pulse wave velocity. These results suggest that regular and continuous combined exercise may be recommended for the healthy aging and longevity of elderly women by inducing anti-inflammation effect and improving the aging hormonal function and the vascular health.

Effects of 16-week Combined Exercise on Dementia, Depression, and Cognitive Function in Elderly Women (16주간의 복합운동이 고령여성의 치매관련인자, 우울감 및 인지기능에 미치는 영향)

  • Park, Chan-Ho;Cheon, Ji-Un
    • Journal of the Korean Applied Science and Technology
    • /
    • v.36 no.2
    • /
    • pp.456-467
    • /
    • 2019
  • The purpose of this study was to investigate the effects of combined exercise on dementia, depression, and cognitive function in elderly women. This study subject were 28 elderly female volunteers, aged 76-83 years and they divided into the exercise group(n=14) and control group(n=14). The combined exercise included the elastic band exercise and aquarobics performed 3 times per week for 90 minutes during 16 weeks. The exercise intensity was set at RPE 10-11 for 1 week to 4 weeks, RPE 11-14 for 5 weeks to 16 weeks, respectively. The test data were analyzed by two-way repeated measures ANOVA, paired t-test, and independent t-test. The alpha level of .05 was set for all tests of significance. The findings of this study were as follows; ${\beta}-amyloid$ and depression were significantly decreased and DHEAs and cognitive function were significantly increased than control group. In conclusion, regular and continuous combined exercise was effective for improving dementia and had a positive effect on depression and cognitive function in elderly women.

Effects of the Field Complexity and Type of Target Object on the Performance of the Baggage Screening Task for Improving Aviation Safety (항공 안전 증진을 위한 장 복잡성과 위험물품의 종류가 수화물 검사 수행에 미치는 효과)

  • Moon, Kwangsu
    • The Journal of the Korea Contents Association
    • /
    • v.18 no.11
    • /
    • pp.484-492
    • /
    • 2018
  • This study examined the effects of field complexity and type of target objects on the performance in baggage screening task. A total of 62 participants(male: 45.2%, female: 54.8%) participated and their mean age was 22.88. The simulated baggage screening task was developed for this study and after the orientation and task exercises, main experiment session was conducted. Participants performed a total of 200 tasks and 40(20%) contained target object. The complexity was set at three levels: high, middle, and low levels and the number of background items contained 20, 14. and 8 respectively. The type of target was set as gun, knife, liquid, and righter. The dependent variables were hit ratio and reaction time. The results showed that the hit ratio decreased and reaction time increased significantly as field complexity increased, and they varied depending on the type of target. The hit ratio of the knife was the highest and liquid lowest and reaction time of the knife was the fastest and liquid slowest. In addition, the interaction effect was also significant. Knife was not affected by complexity, however, small item such as lighter was most affected by complexity.

Development of a Dynamic Downscaling Method using a General Circulation Model (CCSM3) of the Regional Climate Model (MM5) (전지구 모델(CCSM3)을 이용한 지역기후 모델(MM5)의 역학적 상세화 기법 개발)

  • Choi, Jin-Young;Song, Chang-Geun;Lee, Jae-Bum;Hong, Sung-Chul;Bang, Cheol-Han
    • Journal of Climate Change Research
    • /
    • v.2 no.2
    • /
    • pp.79-91
    • /
    • 2011
  • In order to study interactions between climate change and air quality, a modeling system including the downscaling scheme has been developed in the integrated manner. This research focuses on the development of a downscaling method to utilize CCSM3 outputs as the initial and boundary conditions for the regional climate model, MM5. Horizontal/vertical interpolation was performed to convert from the latitude/longitude and hybrid-vertical coordinate for the CCSM3 model to the Lambert-Conformal Arakawa-B and sigma-vertical coordinate for the MM5 model. A variable diagnosis was made to link between different variables and their units of CCSM and MM5. To evaluate the dynamic downscaling performance of this study, spatial distributions were compared between outputs of CCSM/MM5 and NRA/MM5 and statistic analysis was conducted. Temperature and precipitation patterns of CCSM/MM5 in summer and winter showed a similar pattern with those of observation data in East Asia and the Korean Peninsula. In addition, statistical analysis presented that the agreement index (AI) is more than 0.9 and correlation coefficient about 0.9. Those results indicate that the dynamic downscaling system built in this study can be used for the research of interaction between climate change and air quality.