• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.393-394
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• 2017

2015 개정 교육과정을 통해 소프트웨어 교육의 일환으로 프로그래밍 교육이 초등학교 정규교과에 도입된다. 프로그래밍 교육이 문제해결력에 미치는 영향에 대한 분석을 통해 효과적인 교수 학습 방법이 제시될 수 있다. 본 연구에서는 엔트리와 엔트리용 센서보드를 활용한 5차시 분량의 학습 프로그램을 개발하고 그것을 적용한 수업을 실시하였다. 수업 전 후에 문제 해결 검사도구를 활용하여 학생들의 감마파와 뇌파집중 지표의 변화를 측정하고 분석하였다. 이를 통해 효과적인 프로그래밍 교육의 필요성을 제안하였다.

• Proceedings of The KACE
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• 2017.08a
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• pp.131-134
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• 2017

이 연구에서 엔트리 명령 블록을 이용하여 보편적 프로그래밍 언어를 개발하고 검증하였다. 그래서 이 연구를 통해 블록형 프로그래밍 언어의 접근 수월성을 이용하여 절차적 사고력 향상을 위한 아이디어를 제공하고자 하였다. 새로운 프로그래밍 언어를 만들어 알고리즘을 적용하여 함수화된 사칙연산 프로그램을 만들면서, 다양한 알고리즘을 적용하면 엔트리에서 제시하는 모든 명령 블록을 만들 수 있음을 증명하였다. 이 연구를 통해 1)프로그래밍 언어에 포함된 다양한 기능의 명령어들도 함수화되어 있음을 증명하고 재생산 가능함을 경험할 수 있는 아이디어를 제공하고, 2)초보 프로그래머들이 프로그래밍 언어 개발에 대한 흥미와 관심을 갖게 되는 방안을 제시하며, 3)알고리즘을 경험하면서 절차적 사고력을 향상시킬 수 있는 다른 방향의 SW 교수 학습 방법과, 4)프로그래밍 언어를 미시적으로 탐구하면서 SW 교육 관점을 다양화하는 방법을 제시하였다. 이 연구에서 제시한 방안으로 학생들이 절차적 사고력 향상과 프로그래밍 언어의 다양성 인식, 프로그램을 심층적으로 분석하는 태도 등의 SW 교육에 대한 긍정적 변화를 기대한다.

• The Journal of the Korea Contents Association
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• v.22 no.5
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• pp.456-477
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• 2022

The purpose of this study is to provide basic data on practical intervention strategies that many people with disabilities can empower in the future by analyzing the experiences in which people with disabilities were empowered through Encounter group counseling program focusing on people with physical disabilities and brain lesions, who account for 50% of all people with disabilities. The research questions were: First, did people with disabilities get empowerment experiences through an Encounter group counseling program? Second, what kind of empowerment experiences did people with disabilities begin to have through the program? In this study, a focus group interview was conducted with the participants of the program to qualitatively evaluate the empowerment experiences from the Encounter group program. The participants were people with physical disabilities and brain lesions experiencing Encounter group counseling programs at the self-reliance center in Seoul from 2015 to 2019. As a result of the analysis, 7 components, and 17 sub-components were derived, which were grouped into three themes: 1) restoring self relationship 2) forming new relationship with others, and 3) realizing a sense of solidarity with society. The research results were discussed considering the impact of the Encounter program on personal, interpersonal, and social empowerment of people with disabilities and finally, limitations of the study and suggestions for follow-up studies were presented.

• Journal of The Korean Association of Information Education
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• v.24 no.6
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• pp.519-528
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• 2020

Due to COVID-19, most schools are conducting online learning. In this study, a total of 12 block-type educational programming tool classes were conducted in the form of online learning for 6th grade elementary school students, and then quantitatively and qualitatively analyzed students' perceptions of their learning experience on entry learning. As a result of the analysis, it was found that the learner easily recognized the use of the entry program and the difficulty of learning contents, and the learning satisfaction was high. When students face difficulties, it was found that they received the most help from the hint function provided by the site itself, and they were found to be less aware of the necessity of teachers when learning entry. As a result of the qualitative analysis, it was found that the learner felt a lot of novelty and fun through easy and simple operation. On the other hand, it was found that the learning contents and hints were not understood, which made them difficult and felt that the hint contents were insufficient. It was found that students felt a sense of accomplishment by creating and manipulating programs as they wish.

• The Journal of the Korea Contents Association
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• v.17 no.3
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• pp.571-577
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• 2017

Through the 2015 Revised Curriculum, programming education is introduced into the elementary school regular curriculum as part of the software education. Effective teaching & learning methods can be presented through an analysis of the effects of programming education on the problem-solving abilities. In this paper, students were divided into two groups according to their academic achievement, a learning program was developed for five times of implementation using the entry and the sensor board for the entry, and classes to which it was applied were conducted. Before and after the classes, a problem-solving test tool was used to measure and analyze the changes in Gamma waves and EEG concentration indicators. As a result, the gamma waves and the concentration indices of the students in the group with high academic achievement showed a tendency to be improved through the programming lessons, and those of the students in the group with poor academic achievement showed no such tendency. Through this, the necessity of the level-specific programming education in consideration of students' academic abilities was suggested.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.22 no.2
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• pp.182-194
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• 2023

Traffic impact assessment plays a crucial role in resolving traffic issues that may arise during the implementation of urban and transportation projects. However, reported results diverge, presumably because the items reviewed differ. In this study, we analyze traffic improvement measures approved for traffic impact assessment, identify key items, and present items that should be included in assessments. Specifically, TF-IDF and N-gram analysis and text mining were performed with focus on urban development projects approved in Gyeonggi Province. The results obtained show that keywords associated with newly established transportation infrastructure, such as roads and intersections, were essential assessment items, followed by the locations of entrances and exits and pedestrian connectivity. We recommend that considerations of the items presented in this study be incorporated into future traffic impact assessment guidelines and standards to improve the consistency and objectivity of the assessment process.

• Journal of Digital Convergence
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• v.19 no.7
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• pp.227-236
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• 2021

This study aims to develop an AI education program for secondary school students to help understand AI and to provide an experience of solving real-life problems by using AI, and to analyze the effectiveness of education. The education program based on the AI education system for K-12 developed in the previous study was composed of a total of 12 lessons by selecting the self-driving cars, which is emerging as a recent issue among real life problems, as the main topic. Classes were conducted for secondary school students who had experience in software education, and the effectiveness of education and class satisfaction were analyzed. As a result of the analysis, it was confirmed that the understanding of AI and the sense of AI efficacy were improved, and the class satisfaction was high in all items such as educational content, fun in class, difficulty of class, and interest in AI. Based on these results, implications for AI education for secondary students were proposed.

• Journal of KIISE:Computer Systems and Theory
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• v.35 no.1
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• pp.30-43
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• 2008

Memory reference instructions such as loads or stores are critical factors that limit the processing power of processor. The prefetching technique is an effective way to reduce the latency caused from memory access. However, excessively aggressive prefetch leads to cache pollution so as to cancel out the advantage of prefetch. In this study, four filtering schemes have been compared and evaluated which dynamically decide whether to begin prefetch after referring a filtering table to decrease cache pollution. First, A bi-states scheme has been shown to analyze the lock problem of the conventional scheme, this scheme such as conventional scheme used to be N:1 mapping, but it has the two state to 1bit value of each entries. A complete state scheme has been introduced to be used as a reference for the comparative study. A block address lookup scheme has been proposed as the main idea of this paper which exhibits the most exact filtering performance. This scheme has a length of the table the same as the bi-states scheme, the contents of each entry have the fields the same as the complete state scheme recently, never referenced data block address has been 1:1 mapping a entry of the filter table. Experimental results from commonly used general benchmarks and multimedia programs show that average cache miss ratio have been decreased by 10.5% for the block address lookup scheme(BAL) compare to conventional dynamic filter scheme(2-bitSC).

• The Transactions of the Korea Information Processing Society
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• v.5 no.3
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• pp.620-632
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• 1998

This paper introduces a new teehniquc for reducing the compulsory misses of software-managed TLBs by prefetching necessary TLB entries before being used. This technique is not inherently limited to specific applications. The key of this scheme is to perform the prefetch operations to update the TLB entries before first accesses so that TLB misses can be avoided. For the identifications of the prefctch pages, the new classification is introduced, which is based 0n the view of an object code execution. Then, the algorithms and the implementation technique arc described. Using a quantitative analysis, the proposed scheme is evaluated to prove that it is a useful technique for the perronnall~~ ~nhan~"ment of the S/W managed TLBs. in addition, it is discussed that reducing the miss rate by the prefeteh scheme reduces the total miss penalty and bus traffics in S/W-managed TLBs.

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.1
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• pp.77-85
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• 2003

The conversion into a new Local Area Network (LAN) environment without clear analysis of the problems with the conventional LAN environment nay bring about some improvement of performance, but in general, the result would not be as good as expected. Besides, in case new traffic or application programs are added In the near future, traffic overload similar to the past may incur. Therefore, the conversion into a new LAN environment should not only relieve the problems with the conventional environment but also be able to cope with future expansion of the network flexibly. In the present paper, in view of the above, the problems with protocols and traffic that may occur in the Bus-structured 10/100 Mbps shared Ethernet that has been widely used by many institutions are reviewed, and as a case study whether such conversion into a new LAN environment in order to increase the efficiency in the operation, management, and utilization of the network would be proper for the actual operational environment is implemented, and the results are analyzed.