재직자 교육을 위한 MOOC과정에서 온라인 PBL 사례 연구

임다미,허선영,김상연 한국지식정보기술학회 2019 한국지식정보기술학회 논문지 Vol.14 No.1

The purpose of this study was to explore the effects of online project based learning on the learning outcomes of a MOOC in vocational education setting. A six- weeks of “Python Programing learning by step by step Projects” e-learning course was designed as an online project based learning course. This course consisted of three projects supported by additional resources for practices, immediate feedback, and live seminars. The main activity of this course was conducting individual projects supported by individualized feedback from the instructor. The participants of this study was 192 learners who registered this free course. The results show that the completion rate of this course as 33.9% which was very higher comparing to other normal “Python Programing” courses’ completion rate as 19% and the average K-MOOC completion rate in 2016 as 11.4%. Satisfaction score was 4.3/5.0 which was higher than normal “Python Programing” courses’ satisfaction score as 4.12/5.0. Results of this study suggest that online project based learning could be a promising learning model for MOOC in vocational education to facilitate learners’ motivation, completion rate, and satisfaction.

일학습병행제 대학연계형 계약학과의 성과관리체계 개발

임다미,강기호 한국실천공학교육학회 2020 실천공학교육논문지 Vol.12 No.1

The dual system in Korea already plays an important role in quantitative terms in the Korean lifelong vocational competency developmentsystem. However, since most of the existing dual system performance management plans in Korea focus on qualificationlinkeddual system, research on the effective performance management of the four-year university-driven dual system is very insufficient. This paper presents multiple measures for developing a performance management system suitable for the university-drivendual system to achieve qualitative improvement of the contract departments of the dual colleges or universities. As an approach tothe end, a performance evaluation system is established by developing the evaluation items and indicators for the dual colloeges’contract departments. Next, it analyzes the needs of various stakeholder groups such as field teachers of the involved companies, students in apprenticeship and OJT professors of KOREATECH through FGI’s and polls to diagnose the current operational performance,especially the causes of high drpout rates of the contract departments. From these results, the paper presents firstly thedevelopment of measuring methods for the developed performance indicators of the evaluation system and then a systemic performancemanagement system which is based on ‘input-transformation-outcome-feedback’ structure. In addition, some measures forimproving the high dropout rate and performance are presented from the viewpoints of each stakeholder. 일학습병행제는 국내 평생직업능력개발 체계에서 양적으로는 이미 중요한 한 축을 담당하고 있다. 하지만 기존의 일학습병행제 성과관리 방안들은 대부분 자격연계형 일학습병행제에 초점을 맞추고 있어, 4년제 대학이 담당하는 대학연계형 일학습병행제의 효과적인 성과관리체계구축에 대한 연구가 매우 부족한 실정이다. 본 논문에서는 일학습병행제 계약학과의 질적 내실화를 이루기 위해, 대학연계형 일학습병행제에 적합한 성과관리체계를 구축하기 위한 방안을 제시한다. 이를 위해, 대학연계형 일학습병행 계약학과의 성과평가 항목 및 지표를 개발하여 성과평가체계를 구축한다. 다음, 국내 학습근로자, 코리아텍 OJT전담교수, 참여기업의 현장교사 등 다양한 이해관계자집단의 요구를 FGI와 설문조사를 통해 분석하여 현재의 계약학과 운영성과와 특별히 높은 중도탈락률의 원인을 진단한다. 이를 기초로 성과지표별 측정방법을 개발하고, 투입-변환-산출-피드백 구조의 시스템적 성과관리체계를 구축하기 위한 제 방안을 제시한다. 또한 높은 중도탈락률의 개선과 성과향상을 위한 방안을 각이해관계자 측면에서 제시한다.

가상현실기술(VR)의 교육적 활용 - 코리아텍 온라인평생교육원 가상훈련 사례

임다미,신선영,안득용,송인희,김정훈,고한석,김상연,권오영,Im, Tami,Shin, Sun-Young,An, Deug-Yong,Song, In-Hee,Kim, Jung-Hoon,Ko, Han-Seok,Kim, Sang-Youn,Kwon, Oh-young 한국정보통신학회 2017 한국정보통신학회지 Vol.18 No.1

발달장애아동을 위한 방향 교육 시스템

임다미,윤인호,김상연 한국지식정보기술학회 2017 한국지식정보기술학회 논문지 Vol.12 No.5

Developmental disorder children commonly have difficulties in sustaining attention, understanding abstract concepts, and transferring of learning. Repeated training, simulation based learning, and experiential learning using five senses have been suggested as effective learning methods for enhancing skill acquisition and behavioral changes for developmental disorder children due to their cognitive and behavioral delay. The most important factor in educational systems for developmental disorder children is to develop educational tool which enhance their perceptual functioning through bodily sensations and motor skills. In this paper, we introduce an enhanced tangible UX-based educational system consists of a motion creating device and a motion input device and found that it is well operated by a user through experiments. A suspension module is fabricated by a 3D printer and is applied to the motion creating device to equally provide the weight to its four wheels. To investigate the trajectory of the developed motion creating device and its velocity, we construct an experimental environment. The experiment results clearly show that the developed tangible UX-based educational system creates motion along 8 directions and controls its velocity. It is suggested that the UX-based educational system is feasible for the educational systems for developmental disorder children. Follow-up studies with special education institutes will be conducted to examine educational effectiveness of suggested system for developmental disorder children.

분말야금법으로 제조된 고엔트로피 합금 연구 개발 동향

임다미,문종언,김형섭 한국분말야금학회 2017 분말야금기술회보 Vol.8 No.1

블렌디드 러닝 기반 소프트웨어 분야 메이커 교육 과정 개발

임다미 한국지식정보기술학회 2019 한국지식정보기술학회 논문지 Vol.14 No.3

In this study, a blended learning based SW maker education program was developed. The target learners of this program was students in the 3rd and 4th years of college. The goal of this curriculum was to have a basic competency as a maker through a long-term intensive education program that combined online and offline education within one year and to exhibit their project outputs to a maker fair for these learners. This course was designed to enable students to select three tracks for PC application developers, mobile application developers, and embedded developers according to their final target job category, so that learners could develop final products with clear themes which could be helpful for their career path. Throughout the course, online and offline education were blended, and after completing the entire common courses consisting of vocational foundation courses, common foundation courses, and advanced common courses, each course was designed to be completed in three different tracks. The basic direction was to carry out basic theory trainings online and intensive practical training and project development in offline. During the maker fair project, the offline maker space, online lab, and supports from tutor was provided respectively to create a multi-faceted learning environment.

초등 6학년의 학교 통계와 통계적 소양에 대한 연구

임다미,박영희 한국초등수학교육학회 2017 한국초등수학교육학회지 Vol.21 No.2

본 연구에서는 초등학교 6학년 학생들이 교육과정에서 제시하는 확률과 통계에 대해 얼마나 이해하고 있는지 진단하고 통계적 소양과 어떻게 관련되는지에 대해 알아보았다. 그래서 통계적 소양의 이론적 틀을 분석하고, 교과서 내용과 연관되는 요소를 찾아보고 이를 바탕으로 확률과 통계의 내용에 대한 성취 정도와 통계적 소양을 측정하였다. 이를 통해 초등 6학년의 통계적 소양과 관련하여 우리나라 교육과정에서 보완해야 될 요소를 알아보았다. The purpose of this study is to find the correlation between the level of 6th graders' achievement level in Probability and Statistics education, which were proposed in the curriculum, which targeted the 6th graders in the elementary school, and statistical literacy. For this, first, questions asking the achievement level in the probability and statistics(Part A), and questions asking the statistical literacy(Part B), were used to study the achievement level of the students. Second, the achievement level in the probability and statistics, and the statistical literacy were measured. In order to achieve the purpose of this study, questionnaire that consists of 10 questions was invented. The questionnaire was divided into Part 1 and Part 2 under the consideration upon the characteristics of the questions. The results of the questionnaires given to the students were classified into "high, medium, and low" and were separated into 7 categories. Results of comparing category 3 and category 6, which have shown opposing tendencies, we could find that students who are good at school mathematics and students with high statistical literacy have respective and different characteristics. For actually effective statistical education, consideration upon and reflection of core aspects such as intuition and critical thinking in the curriculum are needed.

고에너지 볼 밀링을 이용한 Y-산화물 분산 Fe-기초내열합금 분말의 합성 및 미세조직 특성

임다미,박종관,오승탁,Yim, Da-Mi,Park, Jong Kwan,Oh, Sung-Tag 한국재료학회 2015 한국재료학회지 Vol.25 No.8

Fe-base superalloy powders with $Y_2O_3$ dispersion were prepared by high energy ball milling, followed by spark plasma sintering for consolidation. High-purity elemental powders with different Fe powder sizes of 24 and 50 mm were used for the preparation of $Fe-20Cr-4.5Al-0.5Ti-O.5Y_2O_3$ powder mixtures (wt%). The milling process of the powders was carried out in a horizontal rotary ball mill using a stainless steel vial and balls. The milling times of 1 to 5 h by constant operation (350 rpm, ball-to-powder ratio of 30:1 in weight) or cycle operation (1300 rpm for 4 min and 900 rpm for 1 min, 15:1) were applied. Microstructural observation revealed that the crystalline size of Fe decreased with an increase in milling time by cyclic operation and was about 15 nm after 3 h, forming a FeCr alloy phase. The cyclic operation had an advantage over constant milling in that a smaller-agglomerated structure was obtained. The milled powders were sintered at $1100^{\circ}C$ for 30 min in vacuum. With an increase in milling time, the sintered specimen showed a more homogeneous microstructure. In addition, a homogenous distribution of Y-compound particles in the grain boundary was confirmed by EDX analysis.

발달장애아동을 위한 진동감, 굳기감, 온열감 장치

임다미,윤인호,김상연,정구철 한국디지털콘텐츠학회 2017 한국디지털콘텐츠학회논문지 Vol.18 No.7

본 논문의 목적은 발달장애아동들을 대상으로 하여 사용자들이 교육 플랫폼을 터치했을 때 다양한 햅틱 감각을 경험할 수 있는 교육 플랫폼을 설계·개발하는 데 있다. 본 연구에서 제안하는 상호작용형 교육 플랫폼은 굳기감 제시 모듈, 진동감 제시 모듈, 온열감 제시 모듈과 제어 모듈로 구성되어 있다. 제안하는 교육 플랫폼은 충분한 세기의 압감, 진동감, 온도를 생성하고, 이를 사용자가 잘 느낄 수 있도록 설계하는 데에 중점을 두었다. 개발된 교육 플랫폼의 성능을 알아보기 위해 온열감, 진동감, 압감에 대한 사용자 실험을 진행하였고, 세 가지 모듈 모두 안전하게 교육 플랫폼으로 활용 가능한 범위에서 작동하는 것으로 나타났다. The primary goals of this paper are to design an interactive education platform conveying a variety of haptic sensations to developmental disorder children when they touch the education platform. The proposed interactive education platform is composed of a kinesthetic module, a vibrotactile module, a thermal module. and a controller. The design focuses of the proposed education platform were to create sufficiently large kinesthetic forces, vibrations, and temperatures and to convey them to users. We have conducted experiments for evaluating the proposed system and found out three modules function safely and effectively as an educational platform.

분말야금법으로 제조한 새로운 Co₁₀Fe₁₀Mn₃₅Ni₃₅Zn₁₀ 고엔트로피 합금

임다미,박형근,이병주,김형섭,Yim, Dami,Park, Hyung Keun,Tapia, Antonio Joao Seco Ferreira,Lee, Byeong-Joo,Kim, Hyoung Seop 한국분말야금학회 2018 한국분말재료학회지 (KPMI) Vol.25 No.3

In this paper, a new $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ high entropy alloy (HEA) is identified as a strong candidate for the single face-centered cubic (FCC) structure screened using the upgraded TCFE2000 thermodynamic CALPHAD database. The $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ HEA is fabricated using the mechanical (MA) procedure and pressure-less sintering method. The $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ HEA, which consists of elements with a large difference in melting point and atomic size, is successfully fabricated using powder metallurgy techniques. The MA behavior, microstructure, and mechanical properties of the $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ HEA are systematically studied to understand the MA behavior and develop advanced techniques for fabricating HEA products. After MA, a single FCC phase is found. After sintering at $900^{\circ}C$, the microstructure has an FCC single phase with an average grain size of $18{\mu}m$. Finally, the $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ HEA has a compressive yield strength of 302 MPa.