• Korean Journal of Environmental Agriculture
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• v.1 no.1
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• pp.65-70
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• 1982

This experiment was conducted to see the effect of repeated application of IBP granular formulation(17%, 0,0-diisopropyl-S-benzyl thiophosphate) on the biodegradation of IBP and diazinon〔0,0-diethyl 0-(2-isopropyl-4-methyl-5-pyrimidinyl) phosphorothioate〕 in silt loam soil with 2.1% organic matter under flooded condition. The persistence of IBP in the soil was shortened by increasing the frequencies of application of the chemical. Enhanced degradation ability in the soil caused by repeated application of IBP was prolonged about 53 days, while the ability did not influence diazinon persistence in the soil. The half-lives of IBP in sterilized soil autoclaved at $121^{\circ}C$ for 30 minutes were about 3 times longer than those in viable soil, suggesting that microbial process was a major factor for IBP degradation in the soil. The total colony number of soil microbes showed little difference between the soils with and without repeated application of IBP. A possible concern of specific soil microorganisms on the pesticide degradation in soil was discussed.

• Magazine of the Korean Society of Agricultural Engineers
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• v.29 no.2
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• pp.53-63
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• 1987

Due to their wide range of application, deterministic comprehensive hydrologic models using digital computers have been developed in all countries of the world and researches are being undertaken for their appropriate applications. The aim of this study has been to demonstrate the practical implementation of a physically based distributed hydrologic model, the USDAHL-74 model and to investigate its ability to simulate the long term estimate of water balance quantities in a Korean mountainous watershed. Application of the model to Dochuk watershed indicates the following results. 1.Since the USDAHL-74 model includes all the major components of the hydrologic cycle in agricultural watersheds, thus is comprehnsive, the model seems to have a wide range of application from the fact that simulation results obtained are not only runoff volumes m various time units but their spatial variation as well as even soil moisture within the watershed. 2.An approximate calibration to determine the parameter values in the model using various data obtained from D0chuk shed shows that the simulation error of yearly runoff volume is only 0.6 % and a correlation coefficient between observed daily runoff volume and simulated one is 0.91 in all calibrated period.3.As a verification test of the model, runoff volumes are simulated using 1986 year data without changing the parameter values determined by 1985 year data. The tests show that the USDAHL-74 model is a flexible tool and that realistic production to simulate the long term estimate of runoff in Korean mountainous watershed could be obtained using only a short period of calibration.4. Despite of the encouraging results, there still remain minor problems concerning the practical application of the model to improve the result of simulations. Some of these are the small descrepancies between observed and simulated daily runoff volume appeared in the vicinity of peaks and the recession of1 the daily hydrographs and the model performance for the frozen ground and melting process in the model. 5. Alough the use of parameter with physical significance and the ability to improve calibrations on the basis of physical reasoning represents advantages in the simulation for ungaged watersheds, further researches are needed to use the USDAHL-74 mode to simulate runoff in ungaged watersheds.

• Journal of The Korean Association of Information Education
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• v.26 no.4
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• pp.285-293
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• 2022

The COVID-19 outbreak, which took longer than expected, caused considerable damage to students' basic academic ability in mathematics. In this paper, a multiplication table practice application that can help students improve their basic multiplication arithmetic skills has been developed based on a cloud-service. The performance of the application was improved by integrating the Flutter framework, Google Cloud, and Google Sheets. As a result of applying this application to 72 6th graders in elementary schools located in K Metropolitan City, for one week. students' spending time required for solving multiplication table problems was reduced by more than 28% compared to the initial period, while students' learning data was able to be accurately collected without errors. It is hoped that the development case conducted through the Flutter framework in this study can lead to the development of other educational learning applications.

• Journal of Korean Physical Therapy Science
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• v.2 no.2
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• pp.517-531
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• 1995

This article reviews the concepts of motor ability and motor skill and the models, theories, and treatment approaches of motor contorl. Reflex, hierarchical, and systems models of motor control are discussed. And muscle reeducation, neurodevelopment, motor relearning program, and contemporary task-oriented approach is also discussed. We consider that the concept of motor control is being changed and the treatment approach also is being changed. There are a number of reasons, the first is traditional trteatment approach has limitation. Second is theories of motor control is contineously developed. Third is new approach is coming to us. therefore, the therapists shoulder strive for acquisition of motor skill and motor ability. This article hope the successful integration of models and treatment approaches and its application in physical therapy practice.

• Journal of The Korean Association of Information Education
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• v.2 no.1
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• pp.19-34
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• 1998

For the purpose of adapting positively to the information society, it is very important to develop the capabilities of the retrieve, gather, process and application for informations by making efficient use of computers. So, with a view to understanding the importance of computer and adjusting actively to the information society, the systematic policy to cultivate the ability of making the most of computers is strongly demended. Therefore this study is to make a curriculum and guide for improving the capability of applying computers systematically, through analyzing a curriculum of computer in Elementary, Middle and High Schools, and to develop a model of grading system to cultivate the ability of applying computers, which grades capabilities of its practical use.

• Journal of the Korean Home Economics Association
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• v.26 no.1
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• pp.33-42
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• 1988

This study was done for the purpose of analysing the relationships between the clothing weight and health state on the kindergartners. The data were collected in July. Oct. 1986, and February, April. 1987, 324 kindergartners is Seoul. And those factors assumed in the study to have impacts on the clothing weight were, 1) Anthropometric measurement and BMI, Kaup-Index, % fat. 2) The motor ability 3) The health states assumed by application of cornell medical index and health state, Incidence, medical history. The results obtained were to follows. 1) In November, clothing weight was ghigh correlation between anthropometric measurements, BMI, Kaup-Index, motor ability and cornell-medical index. 2) The health problem scores were significant in total clothing weight, upper wear clothing weight, under wear clothing weight. 3) The relation between clothing weight and weight, BMI, motor ability and cold contration among the health state scores proves to be significant correlation.

• Journal of Korean Elementary Science Education
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• v.33 no.1
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• pp.105-114
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• 2014

The purpose of this study was to develop a teaching strategy focused on problem solving process and explore its effects on science creative problem solving ability, science process skills, science academic achievements and scientific attitudes of students after applying it. Teaching strategy focused on problem solving process employed brainstorming and PMI thinking strategies. The participants were the third grade students of both an experimental class(26 students) and a comparative class(25 students) at the S elementary school located in Goyang-City, Kyonggi Province. The developed strategy was applied to the experimental class for 9 periods of 'Separation of mixture' unit. The results of the tests on the science creative problem solving ability, the science process skills, scientific achievement and scientific attitude were statistically higher in the experimental class.

• School Mathematics
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• v.4 no.1
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• pp.63-78
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• 2002

This research's purpose is to investigate follows. 1. How do middle school teachers recognize the mathematical communication globally? 2. If we classify the modes of mathematical communication as written, spoken, graphic and active ones, how much do teachers use them and how do the students' communication ability come as teachers judge? 3. What are teachers' thinking, the present condition and the future indication for the application of mathematical communication with computer? 4. Do teachers evaluate their students' communication ability? If then, what is the assessment rubric of student's communication ability? The results are analyzed by frequency analysis including percentile and free writings are arranged by similar responses. The result of this study is that global recognition for mathematical communication, current state for students' concrete performance of mathematical communication, and assessment of mathematical communication & proposals are very lacking.

• Proceedings of the Korea Contents Association Conference
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• 2016.05a
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• pp.265-266
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• 2016

This study aimed to examine the effects of mental practice on normal persons' balance ability. Thirty subjects that participated in the experiment were randomly assigned to an experimental group of 15 subjects and a control group of 15 subjects. Both the experimental group and the control group underwent balance training conducted in a sitting position on a gym ball for 20 minutes per time, five times per week for four weeks and the experimental group additionally underwent mental practice for 10 minutes before balance training. After the intervention, balance measuring equipment (Good Balance, Metitur, Finland) was used to quantitatively measure balance ability. Significant differences in the post-training gains in variable of Medial-lateral, Index of balance function, Time were observed between the experimental group and the control group (p<0.05). Both Application of mental practice with balance training aimed at improving balance ability is considered to have positive effect.

• Journal of International Academy of Physical Therapy Research
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• v.8 no.1
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• pp.1090-1094
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• 2017

This study investigated the effects of indirectly applying proprioceptive neuromuscular facilitation (PNF) to the scapular adductor muscles of stroke patients on their scapular movements and walking ability. Five patients who were diagnosed with stroke participated in this study as a single group. PNF patterns were applied to the scapulae anterior elevation and posterior depression patterns and upper limbs patterns of the patients in side lying and sitting positions together. The data were analyzed with a paired t-test in order to identify within-group differences in the measurements before and after the intervention. The scapular movements of the upper and lower parts, weight bearing and walking speed were significantly improved in the stroke patients after the application of PNF (p<0.05). These results suggest that PNF training effective in improving the scapular movements and walking ability in patients with stroke.