• The Journal of Korean Association of Computer Education
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• v.20 no.4
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• pp.37-46
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• 2017

Since 2018, the level of informatics education that is mandatory in junior high schools depends on the subject matter expertise of Informatics & Computer teachers. The purpose of this study is to analyze whether secondary teacher training institutes provide curriculum that guarantees the subjectivity of Informatics & Computer teachers. In order to achieve the goal, this study first compares curriculum courses for educating Informatics & Computer teachers of Korea secondary teacher training institutes with subjects based on the content system of J07-CS, the informatics education in Japan. Second, we compare the basic subjects offered by the Ministry of Education with the vocational subjects. Third, we analyzed the basic subjects of each university. As a result of the study, the number of informatics-related courses opened by Korean secondary teacher training institutions was insufficient compared to the number of subjects in J07-CS. Even though the standard of comparison was limited to basic subjects, the content elements were insufficient, and the ratio of the basic subjects of each university was low. In order to achieve the goal of informatics education from 2018, it is urgent to improve the curriculum of secondary education teachers.

• Journal of Korea Water Resources Association
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• v.40 no.1 s.174
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• pp.1-10
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• 2007

Reallocation procedure of multipurpose reservoir storage capacity between flood control and conservation is presented as an alternative to secure more water resources. Storage reallocation is an adaptive management mechanism for converting existing normal pool level of reservoirs to more beneficial uses without requirement for physical alteration. This study is intended to develop a reservoir storage reallocation methodology that allows increased water supply storage without minimizing adverse impacts on flood control. The methodology consists of flood control reservoir simulation for inflows with various return periods, flow routing from reservoir to a potential damage site, analyzing river carrying capacity, and reservoir yields estimation for reallocated storages. For the flood control model, a simulation model called Rigid ROM(Reservoir Operation Method) and HEC-5 are used. The approach is illustrated by applying it to two reservoirs system in Geum River basin. Especially with and without new project conditions are considered to analyze trade-offs between competing objectives.

• The Journal of Korean Association of Computer Education
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• v.21 no.2
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• pp.11-19
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• 2018

The informatics computer teacher appointment examination is the only national test to measure the competence of educators in teaching students relevant informatics content. The purpose of this study is to provide suggestions and directions for improvement of the informatics computer teacher appointment exam. To this end, we collected appointment exam questions from 2002, when the informatics computer teacher appointment exam first started, to 2017. Based on evaluation areas and evaluation content factors of the indication subject of informatics computer, we built the analysis framework and criteria used in this study. The analysis took into account the revision of basic required courses and changes in the types of exam questions. We analyzed the percentage of points allotted to the subject matter compared to the total number of points, and also the trends of exam questions by school year. The results of the analysis are as follows: first, improvements should be made to avoid concentration in certain areas of the basic required courses of the informatics computer subject. Second, the discrepancy between the exam and the curriculum of basic required courses must be addressed to properly teach and evaluate preliminary teachers. It is significant that this study serves as a stepping stone in supplying highly competent teachers to the field through improving the informatics computer teacher appointment examination.

• Journal of the Korean Society for Library and Information Science
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• v.44 no.2
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• pp.97-116
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• 2010

Since the present training system of Korean teacher librarians is not adequate to strengthen their expertise, the training system should be changed. The purpose of this study is to suggest an improvement of the system, which prescribes their curriculums. To do this, first of all, the requirements for being given a national teacher certification are explored. Secondly, three major previous studies are reviewed. As a result, three subjects have been added to the present curriculum which consists presently of eight subjects. The added subjects are library and information education, information literacy and collaboration and collection development.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.369-369
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• 2017

농업용저수지는 이수 목적으로 비홍수기 농업용수 공급을 위한 용수 확보를 주요 목적으로 하고 있다. 한편, 농업용저수지가 홍수조절능력 또한 지니고 있음이 다수의 연구를 통해 제기되고 있으며, 이에 치수 목적으로 홍수기 홍수피해 저감을 위한 치수 대책 또한 수립할 필요가 있다. 현재 우리나라 농업용저수지의 홍수기 운영은 제한수위 방식을 기준으로 하되 필요에 따라 예비방류를 허용하는 조합 형태를 취하고 있다. 이러한 운영 방식은 홍수기 이후 상시만수위로 복귀하지 못하면 해당 년도 잔여 비홍수기 혹은 다음 년도 영농 시작 시기의 농업용수 공급에 차질이 생길 수 있다는 문제점이 있다. 따라서 홍수기 농업용저수지의 운영은 홍수조절과 함께 상시만수 위로의 복귀를 동시에 고려하여 이루어질 필요가 있다. 가변 홍수기 제한수위 (Variable Restricted Water Level, VRWL) 방식은 홍수 발생빈도와 규모를 고려하여 단위기간별 (일별 혹은 순별) 제한수위를 차등 부여하는 방식으로, 한정된 저수공간의 효율적 재할당에 따라 이수와 치수의 효율을 증대시키는 방안이 될 수 있다. 따라서 본 연구에서는 농업용저수지를 대상으로 저수지 유입량 빈도해석을 수행하고 순별 가변 홍수기 제한수위를 산정한 후 가변 홍수기 제한수위 적용에 따른 홍수조절효과를 평가하고자 한다. 연구대상지는 전국 110개 둑높이기 농업용저수지 중 가능최대홍수량 대상저수지 (유역면적 2,500 ha 이상, 총 저수량 500만 톤 이상) 12개소로 선정하였고, 저수지별 기상자료와 지형자료를 구축하였다. 저수지 유입량 모의를 위하여 장기유출량 산정 모형인 TANK를 이용하였으며, 구축된 저수지 유입량 자료를 토대로 순별 유입량 빈도해석을 수행하고 홍수기 저수지 유입량의 이론적 확률분포형을 선정하였다. 선정된 확률분포형을 토대로 초과확률 10%에 따른 순별 저수지 수위로서 가변 홍수기 제한수위를 산정하였다. 산정된 가변홍수기 제한수위 적용 효과를 분석하기 위하여 홍수조절용량을 산정하였고, 유역비 홍수량을 지표로 하여 홍수조절능력을 평가하였다. 향후 본 연구의 결과는 둑높이기 농업용저수지의 홍수기 제한수위 설정 및 관리, 운영 지침 개선에 있어 기초자료로 활용할 수 있을 것으로 사료된다.

• 대한공업교육학회지
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• v.40 no.1
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• pp.87-104
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• 2015

This study was carried out to evaluate on the job implementation of ITEC(Invention Teacher Education Center)'s in-service teacher training. To accomplish this purpose, teacher's perception on retention, usefulness, utilization, and enhancement were investigated after one year completing in-service teacher training. The populations of this study were 60 teachers completing in-service teacher training of the southeast ITEC. The methods of this study were survey research and qualitative content analysis. The subjects of survey research were 30 teachers and the case analysis objects were 12 epilogues of in-service teacher training. The mean of job implementation of southeast ITEC's in-service teacher training was 4.07 on a five-point scale. Teacher's perception on job implementation sub factors after one year completing in-service teacher training were as follows. The mean of enhancement factor was 4.39, usefulness factor was 4.11, utilization factor was 3.94, and retention factor was 3.82 on a five-point scale. The mean of enhancement factor and usefulness factor were relatively high level as compared with the mean of job implementation and the mean of utilization factor and retention factor were relatively low level as compared with the mean of job implementation. The results of qualitative content analysis about 12 epilogues of in-service teacher training, some significant instances were deducted that representable retention, usefulness, utilization, and enhancement factors directly and indirectly.

• Journal of Korea Water Resources Association
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• v.57 no.6
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• pp.409-419
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• 2024

Climate change is already impacting sustainable water resource management. The influence of climate change on water supply from reservoirs has been generally assessed using climate change scenarios generated based on global climate models. However, inherent uncertainties exist due to the limitations of estimating climate change by assuming IPCC carbon emission scenarios. The decision scaling approach was applied to mitigate these issues in this study focusing on four reservoir watersheds: Chungju, Yongdam, Hapcheon, and Seomjingang reservoirs. The reservoir water supply reliablity was analyzed by combining the rainfall-runoff model (IHACRES) and the reservoir operation model based on HEC-ResSim. Water supply reliability analysis was aimed at ensuring the stable operation of dams, and its results ccould be utilized to develop either structural or non-structural water supply plans. Therefore, in this study, we aimed to assess potential risks that might arise during the operation of reserviors under various climate conditions. Using observed precipitation and temperature from 1995 to 2014, 49 climate stress scenarios were developed (7 precipitation scenarios based on quantiles and 7 temperature scenarios ranging from 0℃ to 6℃ at 1℃ intervals). Our study demonstrated that despite an increase in flood season precipitation leading to an increase in reservoir discharge, it had a greater impact on sustainable water management compared to the increase in non-flood season precipitation. Furthermore, in scenarios combining rainfall and temperature, the reliability of reservoir water supply showed greater variations than the sum of individual reliability changes in rainfall and temperature scenarios. This difference was attributed to the opposing effects of decreased and increased precipitation, each causing limitations in water and energy-limited evapotranspiration. These results were expected to enhance the efficiency of reservoir operation.

• 대한공업교육학회지
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• v.34 no.1
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• pp.210-237
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• 2009

The aim of this thesis is to develop a robot C programming curriculum with the subject of the students in the middle & High School and to prove the effect of the programming on creativity and programming ability. The content of the robot C programming curriculum consists of the introduction, basic knowledge and assembling of the robot (usage of kits and the theory of mechanism); the learning of the robot c programming; the assigned robot making; the original robot making, which is ultimately designed to improve the creative robot programming ability of students. The subjects are divided into two groups(38); one groups(11) taking the course of C++programming and the other(27) taking the robot C programming as well as C++programming. Then each group's improvement of creativity and programming ability is measured in both pretest and posttest. The students taking the robot C programming curriculum gain the product of the assigned robot and the original robot. Besides, it turns out that the curriculum have a meaningful effect in that students acquire the enhanced creativity according to the result of TTCT Creativity Test. Self evaluation also indicates the improvement of C++programming ability.

• Resources Recycling
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• v.15 no.6 s.74
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• pp.16-24
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• 2006

In this study, the neutralization and dechlorination process of MWI(Municipal Waste Incinerator) fly ash with $H_2SO_4$ are investigated to recover HCI, which is delivered from the reaction of chloride in the ash and sulfuric acid. The coarse crystalline gypsum and fine impurity containing heavy metal are also separated by 500# wet screening followed by recrystallization of the dechlorinated ash mainly made of $CaSO_4$. As a results, Using 100g MWI fly ash and 85g cone. sulfuric acid as raw material, 52.6g hydrochloric acid with 35% assay and 116.9g crystalline gypsum with 98% or more assay are recovered. In this process, 7.85g fine impurity containing heavy metal and 2.65g coarse impurity are also separated.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.734-734
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• 2012

국내에서는 과거부터 현재까지 하천을 이수, 치수, 하천환경 등 기능별로 구분하여 관리해 오고 있다. 하지만 하천을 보다 합리적으로 관리하기 위해서는 종합적인 관점에서 접근이 필요하며 하천의 현 상황을 제대로 파악하는 것이 무엇보다 중요하다. 하천을 평가하기 위해 제방축조율, 수질 등 다양한 하천지표 및 평가기법들이 개발되어 왔으나 치수 이수 환경 친수 등 하천의 다양한 기능 중 특정 기능들에 대해서만 단편적으로 진단해 오고 있는 실정이다. 또한 4대강 사업, 생태하천조성 등 다양한 하천사업이 시행되고 있어 그 성과와 필요성을 정량적으로 평가 관리할 수 있는 제도 마련이 필요하며, 하천 기능을 종합적으로 진단하고 이를 객관적으로 정량화할 수 있는 체계 구축이 매우 절실하다고 할 수 있다. 따라서 건전한 하천종합관리체계 구축을 위해 하천의 기능인 이수, 치수, 하천환경 및 친수 요소간의 조화와 평가가 가능한 정량적 지표 및 지수의 개발이 필요하다. 보다 건전한 하천관리체계 구축을 위한 국가 수자원 정책 결정 시 정책결정자가 보다 다양한 정보를 획득하고 이를 통한 분석정보를 바탕으로 여러 가지 대안을 도출할 수 있어야 하며 이는 여러 가지 정보를 종합한 지표를 통해 보다 쉽게 얻을 수 있다. 하천의 다양한 기능에 대한 정보를 종합하여 지표화함으로써 정책결정자는 여러 가지 경우를 고려한 다양한 대안을 검토할 수 있게 되어 최적의 대안 도출이 가능해진다(건설교통부, 2006). 본 연구에서는 한정된 수자원을 다양한 목적과 제약조건을 충족시키면서 효율적으로 이용, 보전하기 위해 하천의 다양한 정보의 연계, 공유를 통한 통합관리체계 구축을 하고자 하천 특성을 표현할 수 있는 다수의 대리변수를 조사, 분석하였다. 또한 조사된 대리변수들 중 하천의 각 기능에 미치는 영향을 충분히 고려하여 대리변수를 선정하고 이를 통해 잠재지표를 선정하였다. 선정된 잠재지표를 이용하여 하천의 각 기능을 평가할 수 있는 하천종합관리지표를 개발하여 국내 국가하천에 적용함으로써 하천 특성의 시공간적인 변화를 분석하였다. 개발된 지표를 통해 국내 하천관련 사업에 대한 B&A 분석을 수행하여 사업 성과를 제시하였다. 본 연구에서 개발된 지표는 하천관련 사업의 전, 후 상황을 분석함으로써 사업효과를 분석할 수 있으며 하천관련 사업의 효과에 대한 대국민 홍보효과를 가져올 수 있을 것으로 사료된다.