• Journal of Digital Convergence
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• v.18 no.6
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• pp.99-108
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• 2020

This study aimed to investigate beginner-level learners' use of translators in L2 writing, and shed light on its validity in writing performance through their responses on the necessity, reliability and limitation of machine translation. 117 university students from beginner-level L2 writing classes participated in the survey. Additionally, 11 of them were interviewed about their answers. The survey and interview data revealed varying viewpoints such as reliability and effects as well as reasons for choosing translator-assisted writing. The vast majority(76.1%) used web-based machine translators for their writing activities, and employed various strategies to help their insufficient L2 skills and to increase their motivation and confidence. On the other hand, they exhibited its detrimental effects including it could lead to plagiarism, and interfere with the learning process unless they post-edited the given translation. However, translators were viewed as a new, efficient, and valid educational tool for effective and successful L2 writing.

• Journal of the Korean Chemical Society
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• v.47 no.4
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• pp.401-411
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• 2003

One of the most important characteristics in the seventh educational course is an enforcement of differentiated level curriculum. Therefore, development of various different level educational subjects is needed. A new chromatographic experimental kit which is helpful for middle school students to understand chromatographic principles is needed to correct some mistakes of chromatographic part within the 6th educational course's middle school textbook. In this research, a new thin layer chromatography(TLC) experimental kit for middle school students are developed by using acid-base indicator as samples and ethyl alcohol, ethylacetate, hexane as eluents. The kit is applied to two kinds of middle school student groups(general group & genius group) and two kinds of teacher groups(science teacher & non-science teacher) and an efficacy of the new chromatographic kits are evaluated through making up some questions.

• Journal of Educational Research in Mathematics
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• v.13 no.2
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• pp.179-225
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• 2003

The purpose of this study is to revise the previous mathematics glossary Since the last mathematics glossary was published by MOE in 1937, there have been two curriculum revisions. As a result, many terms which are newly included in the curriculum are not specified in the mathematics glossary. Moreover, part of mathematics terms and the informations about mathematicians and mathematics educators in mathematics glossary are not correct. Thus the revision of the mathematics glossary is definitely necessary. To collect the opinions about mathematics terms, a large scale survey targeting mathematics education researchers and mathematics teachers was conducted and the subsequent meetings were held. Also, the studies regarding mathematics terminology were thoroughly reviewed to provide the direction of desirable mathematics terms. Reflecting all these informations, the draft of the new mathematics glossary was completed.

• International Journal of Highway Engineering
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• v.7 no.1 s.23
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• pp.63-71
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• 2005

Asphalt binder grading is to specify quality of asphalt binders relating to pavement performance in orderly manner, and provides the necessary information in selecting the appropriate asphalt binder for the hot mix design. For this purpose, United States has developed the PG-grading in 1995 and is implementing in practice. Recently, this American PG-grading system has been accepted as the domestic binder grading specification. However, the Asian (including Japan and China) and the most European countries are still use the traditional penetration and viscosity specification. The goal of this study lies in analysing the American PG-grading for its justification. As the result, the serious errors are found, and thus, to eliminate the errors, the more precise binder grading equation is introduced, Credibility of this study is checked by predicting the literature rut data with the equations mentioned. The prediction result are validating the claimes made in this study.

• Journal of the Korean association of regional geographers
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• v.16 no.5
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• pp.497-516
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• 2010

The purpose of this study is to critically investigate the places of the 'Daegusibyeong(大丘十詠)', written by Seo, Geojeong based on Chinese poem, old documents, and field surveys in terms of a geographical perspective. It is asserted that the controversial aspects on the 'Daegusibyeong(大丘十詠)' are corrected through the analysis of old documents and field surveys. The results are summarized in the followings. 1) Ascertain historical and geographical evidence on places of 'Daegusibyeong(大丘十詠)' are accomplished properly based on old documents and field surveys. 2) The existing misinterpretation of the 'Daegusibyeong(大丘十詠)' are corrected by the finding of one Chinese character in the 'Dongsasimseung(桐寺尋僧)', the seventh poem of 'Daegusibyeong(大丘十詠)' consisted of 10 Chinese poems. 3) Subjects and content of the 'Daegusibyeong(大丘十詠)' in Sagajib(四佳集) are more rightly written than those of the old documents such as Daegueubji(大丘邑誌), Sinjeungdonggukyeojiseungram(新增東國輿地勝覽). 4) A few mistakes in the subject and word of the 'Daegusibyeong (大丘十詠)' are corrected as compared with the those of the old documents. 5) It is assumed that the brand value and image of Daegu city will be improved if the 'Daegusibyeong(大丘十詠)' is restored based on the results of the study and its restoration is utilized in Daegu city tour program.

• Communications of Mathematical Education
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• v.25 no.1
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• pp.1-19
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• 2011

HPM(History and Pedagogy of Mathematics) become an important issue to us now. Study on old Korean mathematics books were made recently. We study mathematics books in Kyujanggak in this article. Horng Wann-Sheng 洪萬生, an math. historian and a member of editorial board of Historia Mathematica, visited Kyujanggak, the royal library of Joseon Dynasty. After his visit, he published a paper, "The first visit to mathematics books in Kyujanggak 奎章閣收藏算書初訪"(2008 Kyujanggak 32, p. 283-293). In his paper, he also raised several research problems on the history of Korean mathematics. In this paper, we analyze his paper "The first visit to mathematics books in Kyujanggak" and give some answers to those raised problems on Korean mathematics. Also we correct some misunderstanding of Horng on some facts. Especially, we make it clear that the author of SinJungSanSul(New Arithmetics 新訂算術) was not Lee Sang-Seol(李相卨), whom Horng considered as the author, but Lee Gyo-Seung(李敎承) through the correct translation of its preface and an article about its copyright lawsuit. And we added some pathways how Chinese mathematics books were imported by Joseon. We introduce the case of Hong Dae-Yong(洪大容) in detail.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.11
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• pp.19-27
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• 2020

On an offshore plant topside, various types of offshore facilities for processing energy resources, such as oil and gas, and equipment and outfitting for connecting these facilities are installed in a limited space. An offshore plant superstructure is composed of numerous supporting rack structures and reinforcements for securing and supporting offshore installations and the related equipment. This paper describes the development of design support software to support this superstructure design efficiently. The developed design support software, which was based on AVEVA Marine's PML(Programmable Macro Language), supports the parametric method for superstructure design. A method of batch 3D modeling from 2D drawings for supporting rack structure produced in the basic and detailed design was also developed using AutoLisp. In addition, through the application example of superstructure module design, the design support software introduced in this paper can be expected to reduce the design time by more than 90% compared to the use of only basic functions of AVEVA PDMS.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.181-185
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• 2016

In this paper we propose a VR-based Sailor Training Platform Authoring Tool which efficiently trains sailors in immersive ways. Proposed authoring tool consists of virtual environment reconstruction that imports real ship indoor environment into virtual environment and script editing which is able to implement various scenarios in emergency based on just drag-and-drop interface. The aim of importing real ship environment and supporting various VR devices is to enhance immersiveness and training so that trainees can deal with serious emergency events. Also the usefulness of the interface enables to reduce the cost of making training materials. Throughout scenario editing interface, the proposed authoring tool supports the editing of multi-user scenario and setting individual task for the evaluation.

• Journal of Sericultural and Entomological Science
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• v.53 no.1
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• pp.29-37
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• 2015

Since based on the revised educational curriculum, the insects and spiders in eight biology textbooks I and II of high school are as follows. In class level, two classes, Insecta and Arachnida were investigated and their frequence numbers in the textbooks were a total of 143 times. In order level, 12 orders in insecta, 2 orders in Aranea were appeared in the textbooks. The most appearing frequence number was represented in Lepidoptera (33 times) and then in Araneae (11 times). For each publisher, the most appearing frequencies of insecta and spiders was shown in Gyohaksa (23 times), and then in Hyeongseol and Centurla education research institute (21times, respectively). In the textbooks, four species were found to misidentify in their species name and five mistakes were investigated in their photos and content.

• Journal of Broadcast Engineering
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• v.6 no.1
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• pp.82-97
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• 2001

In this paper, we describe a software implementation of a digital TV stream analyzer that can be used for analyzing and verifying digital TV bitstreams on personal computes. It accepts as input MPEG-2 transport streams (TS's) already stored on hard disks and doesn't require any special hardware. After classifying TS packets into program specific information(PSI) TS section auido, video, program clock reference (PCR) private data and null packets, it displays their contents through a graphic user interface along with the syntax elements of the TS header. Also it displays the decoded I frame nearest in time axis the TS packet currently shown This feature helps pin pointing the specific location of problematic parts in bitstreams. The bitsteam analyzer provides the compliance test of MPEG-2 Systems standard and the data injection functionality with which one can easily insert additional data to existing MPEG-2 bitstreams. Using the resulting system one can produce at low test streams for interactive broadcasting and data broadcasting for laboratory use.