• Journal of Korean Library and Information Science Society
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• v.52 no.2
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• pp.145-166
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• 2021

The study was aimed at verifying the effectiveness of Book-Coding reading education as a reader activity of older elementary school children at a time when high-dimensional thinking abilities were formed. To this end, 30 fifth-grade children of N Elementary School in N-si, Gyeonggi-do, comprised of 15 students from a reading education program using Book-Coding, and 15 students from a reading comprehension program, and applied the reading education program over a total of 12 sessions. The main results of the study are summarized as follows. First, when the effects of the convergence reading education program using Book-Coding on the logical thinking ability of the students in the upper grades in the elementary school were analyzed, all the six sub-factors of logical thinking ability, that is, conservation logic, proportional logic, variable controlling logic, probabilistic logic, correlational inference logic, and combinational logic, were proved to have statistically more meaningful difference than the group writing a book report. Second, the analysis result of the influence of the convergence reading education program using Book-Coding on the creativity of the students in the upper grades of the elementary school showed that all the 13 elements of curiosity, persistence, effectiveness, independence, adventurousness, openness, knowledge, imagination, originality, sensitivity, fluency, flexibility, and accuracy were statistically meaningfully different compared to the book report group. Third, when it was analyzed how the convergence reading education program using Book-Coding affected the creative personality of the elementary school students, all the six factors of curiosity, task commitment, independence, awareness of risk, and openness of thinking, and aesthetics were found out to have a statistically more meaningful difference than the group that wrote a book report.

• Journal of Digital Contents Society
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• v.18 no.1
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• pp.63-70
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• 2017

Recently, as user feedback such as social reading become active, demand has been increased on e-book contents making which is based on user feedback. However, to reflect the user feedback onto the e-book, direct coding is required, which was difficult to the author who was not good at programming. To resolve this problem, Block assembly style feedback editor system, using Blockly was developed. This editor enables to reflect the user feedback by area allocation, component allocation, block editing, and code generating insertion, contrary to the existing way of programming realization in which direct coding was required for input, processing and output separately. This system was developed by using HTML. Javascript, PHP, and Codeigniter. Block editing is enabled to do provision and assembly of blocks by Blockly. The function of code generation & insertion allows to insert the Library function code. Through this system, the general users who are not capable of coding also can reflect feedback without doing actual coding.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2006.07a
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• pp.544-544
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• 2006

• Journal of Communications and Networks
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• v.17 no.5
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• pp.463-472
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• 2015

This paper considers a limited feedback system for two-way wireless relaying channels with physical network coding (PNC). For full feedback systems, the optimal structure with the PNC has already been studied where a modulo operation is employed. In this case, phase and power of two end node channels are adjusted to maximize the minimum distance. Based on this result, we design new quantization methods for the phase and the power in the limited feedback system. By investigating the minimum distance of the received constellation, we present a code-book design to maximize the worst minimum distance. Especially, for quantization of the power for 16-QAM, a new power quantization scheme is proposed to maximize the performance. Also, utilizing the characteristics of the minimum distance observed in our codebook design, we present a power allocation method which does not require any feedback information. Simulation results confirm that our proposed scheme outperforms conventional systems with reduced complexity.

• Journal of the Korea Society of Computer and Information
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• v.26 no.12
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• pp.323-330
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• 2021

In this paper, a study was conducted to understand how students' attitudes and tendencies toward reading affect the newly emerging coding education. Relevant data were collected by dividing it into three areas (reading, coding, and leisure). In the reading area, data on preference books, preferred types of reading and etc were collected. In the coding area, prior learning of coding, main tasks using a computer, time used for learning and etc were collected. In the leisure area, main leisure activities and hours of spent leisure time per one week were collected. Using the collected data, we classified and analyzed the data based on the preferred reading method to identify the problems of non-major students who have difficulties in coding education. In coding education, the excerpts reading student group showed the best achievement (average 60.1), and the extensive reading group showed the lowest achievement (average 48.4). The students who read extensively spent more time in coding study than the group of students who preferred other reading methods, but showed the lowest achievement.

• Journal of Korea Multimedia Society
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• v.6 no.4
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• pp.658-667
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• 2003

Developing tailor made Multimedia courseware ensuring effective implementation of instruction strategies is a challenge that manifests in myriad problems of software design and coding. In this paper an attempt has been made to analyse and identify coding and implementation problems, in the backdrop of using two different multimedia software development tools i.e. Visual Basic and Toolbook, which underpin the development and effectiveness of use of multimedia courseware. Solutions to such problems have been discussed in context of Tool book. The examples presented in this paper are based on the experience of designing and implementation of two large scale professional quality Multimedia courseware development projects.

• Proceedings of The KACE
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• 2018.08a
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• pp.81-84
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• 2018

정보기술(IT)이 발달함에 따라 프로그래밍 학습에 대한 관심이 크게 증가하고 있으며, 특히 2018년도부터는 소프트웨어 교육(코딩 교육)이 의무화가 되었다. 하지만 아직도 대부분의 프로그래밍 학습 방법은 교재의 내용을 확인한 다음 편집 에디터에 코딩을 한 후, 빌드 및 실행하는 과정을 거쳐 결과를 확인하는 다소 번거로운 방법을 거치고 있다. 본 연구에서는 프로그래밍 학습자가 보다 편리하게 학습할 수 있도록 전자책 뷰어가 갖추어야 할 스마트한 기능들을 제시하고 구현하고자 한다.

• The Journal of the Korea Contents Association
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• v.17 no.6
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• pp.9-21
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• 2017

The purpose of this study was to explore the characteristics of children's favorite picture books by age according to genre. For this purpose, children of 6 and 9 year old were interviewed from October 2015 to January 2016, and the final data of 34 children were selected for analysis. The collected data were analyzed by inductive coding qualitatively. The results of this study are summarized as follows: First, picture books preferred by 6 year old children appeared in the order of folktale picture books, story picture books, korean-domestic poetry picture books, informational picture books, and they didn't prefer korean-translated poetry picture books. They tended to like interesting story and well-constructed plots. Second, picture books preferred by 9 year old children were surveyed in the order of story picture books, folktale picture books, korean-domestic poetry picture books, and they didn't prefer informational picture books and korean-translated poetry picture books. They explored literary elements extensively and considered them as interesting factors. Based on these results, this study revealed reasons why children of different ages prefer particular picture book genre, and proposed ways to use picture book genres widely by age.

• Journal of Electrical Engineering and information Science
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• v.1 no.1
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• pp.91-97
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• 1996

This paper proves by straightforward computation an interesting property of a recursive indexing: it preserves the entropy of a geometrically-distributes stationary memoryless source. This result is a pleasant surprise because the recursive indexing though one-to-one, is a symbol-to-string mapping and the entropy is measured in terms of the source symbols. This preservation of the entropy implies that the minimum average number of bits needed to represent a geometric memoryless source by the recursive indexing followed by a good binary encoder of a finite imput alphabet remains the same as that by a good encoder of an infinite input alphabet. Therefore, the recursive indexing theoretically keeps coding optimality intact. For this reason recursive indexing can provide an interface for a binary code with a finite code book that performs reasonably well for a source with an infinite alphabet.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.10
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• pp.31-40
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• 2013

In this paper, the spatial modulation (SM) multi-input multi-output (MIMO) system is proposed for indoor wireless local area networks (WLANs) with improved spectral efficiency. SM is suitable for high speed WLANs with avoiding the inter channel interference (ICI). Only one transmit antenna is activated in SM at each symbol interval. Therefore, it fails to attain the maximum coding gain of MIMO. The space time block code (STBC)-SM MIMO system can attain the maximum diversity gain at the expense of spectral efficiency. The proposed Golden-SM MIMO system uses the Golden code to improve the coding gain and spectral efficiency at the same time. The Golden code is adapted for STBC-SM and it makes the new code book for transmission symbols. The performance of the proposed system is compared with the conventional systems with computer simulations.