• Journal of Korean Elementary Science Education
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• v.29 no.3
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• pp.262-276
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• 2010

The purpose of this study was to investigate and analyze the elementary teachers' views and students' views about the difficulties in teaching and learning on open inquiry activities of elementary school science. Semi-structured interviews were conducted individually with three elementary teachers who have serviced more than three years, and with twenty four elementary students attending schools located in Cheongju City. And their anecdotes were collected and analyzed. The interview questions were developed through Seidman's steps to acquire the reliability in the interview data. From the interviews and anecdotes, we found that elementary teachers' views about the difficulties of teaching open inquiry activities: the difficulties of teaching in finding inquiry problem and planning inquiry, the difficulties of managing group activities, the difficulties of managing class hours for inquiry, the lack of the students' inquiry abilities, and problems on students' affective characteristics. And the students have the views about the difficulties in doing open inquiry activities: the difficulties of finding inquiry problem and planning inquiry, being unaccustomed to write reports, the troubles with investigating, problems on affective characteristics, the difficulties of joining in a group, and the lack of inquiry abilities. The teachers give suggestions for effective application of the open inquiry activities: first, the teachers must encourage students' emotion and will in doing open inquiry activities, second, there must be the steady inquiry teaching and learning in ordinary elementary science classes. Based on the results, this study suggested that elementary teachers should concern specially about students' being unaccustomed to write reports and the troubles in doing scientific investigation.

• Asian-Australasian Journal of Animal Sciences
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• v.17 no.11
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• pp.1591-1598
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• 2004

To isolate the $\beta$-galactosidase producing thermophilic bacteria, samples of mud and water were collected from hot springs of avolcanic area near Golden Springs in New Zealand. Among eleven isolated strains, the strain of KNOUC112 produced the highest amounts of $\beta$-galactosidase at 40 h incubation time (0.013 unit). This strain was aerobic, asporogenic bacilli, immobile, gram negative, catalase positive, oxidase positive, and pigment producing. Optimum growth was at 70-72$^{\circ}C$, pH 7.0-7.2, and it could grow in the presence of 3% NaCl. The main fatty acids of cell components were iso-15:0 (30.26%), and iso-17:0 (31.31%). Based on morphological and biochemical properties and fatty acid composition, the strain could be identified as genus Thermus, and finally as Thermus thermophilus by phylogenetic analysis based on 16S rRNA sequence. So the strain is designated as Thermus thermophilus KNOUC112. A gene from Thermus thermophilus KNOUC112 encoding $\beta$-galactosidase was amplified by PCR using redundancy primers prepared based on the structure of $\beta$-galactosidase gene of Thermus sp. A4 and Thermus sp. strain T2, cloned and expressed in E. coli JM109 DE3. The gene of Thermus thermophilus KNOUC112 $\beta$-galactosidase(KNOUC112$\beta$-gal) consisted of a 1,938 bp open reading frame, encoding a protein of 73 kDa that was composed of 645 amino acids. KNOUC112$\beta$-gal was expressed as dimer and trimer in E. coli JM109 (DE3) via pET-5b.

• Journal of Information Science Theory and Practice
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• v.12 no.3
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• pp.75-88
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• 2024

This study aims to assess the maturity of Korean open access (OA) journals using the OA infrastructure provided by the Korea Institute of Science and Technology Information, and develop necessary strategies for future improvement. The assessment model consists of three dimensions, 12 items, and 24 sub-items. The importance of the three dimensions (A: OA policy establishment and disclosure, B: OA sustainability, and C: Journal openness quality) was differentiated by the Analytic Hierarchy Process, and the maturity stages were divided into five levels (Entry, Growth1, Growth2, Maturity1, and Maturity2). The assessment was carried out twice for 100 academic journals. The results indicated that the proportion of journals at or above the Growth1 level increased by 11% to reach 83% during the second assessment phase, which could be owing to the learnings of the first assessment. Following expert consultations on the assessment results, three support measures were identified to activate OA. The first includes OA promotion and education activities, which involve creating standard regulations and guidelines, and advancing educational activities for societies that are either preparing for or currently implementing OA. The second involves providing support for technical aspects, such as identifiers, XMLization, and copyright management, through peer review and OA publishing platforms. The third includes collaborative activities to enhance journal evaluations and the recognition criteria for researchers' achievements in OA journals, and fostering cooperation with national and research and development institutions for financial support.

• Journal of The Korean Astronomical Society
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• v.38 no.4
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• pp.429-435
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• 2005

We present BV CCD photometry for the open clusters Czernik 24 and Czernik 27. These clusters have never been studied before, and we provide, for the first time, the cluster parameters; reddening, distance, metallicity and age. Czernik 24 is an old open cluster with age $1.8{\pm}0.2Gyr$, metallicity $[Fe/H]=-0.41{\pm}0.15dex$, distance modulus $(m-M)_0=13.1{\pm}0.3mag$ ($d=4.1{\pm}0.5kpc$), and reddening $E(B-V)=0.54{\pm}0.12mag$. The parameters for Czernik 27 are estimated to be $age=0.63{\pm}0.07Gyr$, $[Fe/H]=-0.02{\pm}0.10dex$, $(m-M)_0=13.8{\pm}0.2mag$ ($d=5.8{\pm}0.5kpc$), and $E(B-V)=0.15{\pm}0.05mag$. The metallicity and distance values for Czernik 24 are consistent with the relation between the metallicity and the Galactocentric distance of other old open clusters. We find the metallicity gradient of 51 old open clusters including Czernik 24 to be ${\Delta}[Fe/H]/{\Delta}R_{gc}=-0.064 {\pm}0.009dex\;kpc^{-1}$.

• Journal of Information Science Theory and Practice
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• v.10 no.spc
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• pp.25-38
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• 2022

Research data means data used or created in the course of research or experiments. Research data is very important for validation of research conducted and for use in future research and projects. Recently, convergence research between various fields and international cooperation has been continuously done due to the explosive increase of research data and the increase in the complexity of science and technology. Developed countries are actively promoting open science policies that share research results and processes to create new knowledge and values through convergence research. Communities to promote the sharing and utilization of research data such as RDA (Research Data Alliance) and COAR (Confederation of Open Access Repositories) are active, and various platforms for managing and sharing research data are being developed and used. OpenAIRE (Open Access Infrastructure for Research In Europe), a research data platform in Europe, ARDC (Australian Research Data Commons) in Australia, and IRDB (Institutional Repositories DataBase) in Japan provide research data or research data related services. Korea has been establishing and implementing a research data sharing and utilization strategy to promote the sharing and utilization of research data at the national level, led by the central government. Based on this strategy, KISTI has been building a Korean research data platform (DataON) since 2018, and has been providing research data sharing and utilization services to users since January 2020. This paper reviews the characteristics of DataON and how it is used for research by showing its applications.

• Proceedings of the Korean Society of Computer Information Conference
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• 2009.01a
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• pp.61-64
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• 2009

본 연구는 OpenGL을 이용하여 3차원 그래픽으로 가상캠퍼스 맵을 구현한다. 매핑 효과, 블랜딩 이론등을 적용하여 사실적인 물체를 구현하는 것을 목표로 한다. 매핑 효과는 조금 더 사실적인 캠퍼스 모습을 보여준다. 그리고 가상캠퍼스에 사용될 지형지물은 그래픽 기법과 블랜딩 이론을 적용하여 구현함으로써 구조를 보여준다. 본 논문은 데이터의 용량과 랜더링 시간을 줄이고, 전체적인 향상을 위한 알고리즘을 개발하는데 중점을 둔다.

• Proceedings of the Korean Information Science Society Conference
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• 2000.04a
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• pp.645-647
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• 2000

본 논문에서는 멀티미디어나 데이터베이스 등 대용량 입출력을 효율적으로 지원하기 위하여 고속 네트웍으로 연결된 클러스터링 환경에서 동작하는 클러스터 파일 시스템인 OpenCFS를 설계하고 구현하여 성능을 평가한다. 구현된 클러스터 파일 시스템은 입출력 장치의 한계를 극복하기 위하여 스트라이핑(striping)기법을 통한 병렬 입출력(parallel I/O)을 수행하고, 능동적으로 시스템 내부 정책 병경을 가능하게 하는 오픈 임플리멘테이션(Open Implementation)방법론을 적용함으로써 응용프로그램의 시스템 내부 정책에 대한 접근 방법을 제공한다. 실험을 통하여 구현된 클러스터 파일 시스템의 성능을 분석한 결과, 사용자가 기존의 프로그래밍 환경을 유지하면서 시스템 내부 정책을 변경함으로써 개선된 성능의 입출력 서비스를 제공 받을 수 있다.

• Journal of Information Science Theory and Practice
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• v.3 no.2
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• pp.6-15
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• 2015

Since the advent of Linked Data (LD) as a method for building webs of data, there have been many attempts to apply and implement LD in various settings. Efforts have been made to convert bibliographic data in libraries into Linked Data, thereby generating Library Linked Data (LLD). However, when memory institutions have tried to link their data with external sources based on principles suggested by Tim Berners-Lee, identifying appropriate vocabularies for use in describing their bibliographic data has proved challenging. The objective of this paper is to discuss the potential role of Linked Open Vocabularies (LOV) in providing better access to various open datasets and facilitating effective linking. The paper will also examine the ways in which memory institutions can utilize LOV to enhance the quality of LLD and LLD-based ontology design.

• Journal of applied mathematics & informatics
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• v.39 no.5_6
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• pp.743-749
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• 2021

The purpose of this article is to study few properties of fuzzy mean open and fuzzy mean closed sets in fuzzy topological spaces. Further, the idea of fuzzy mean clopen set is introduced. It is observed that a fuzzy mean clopen set is both fuzzy mean open and fuzzy mean closed but the converse is not true.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10b
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• pp.7-9
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• 2003

지리 정보 시스템의 사용 범위가 확대되면서 다른 지리 정보 시스템에서 사용하는 유용한 공간 데이터에 대한 공유의 필요성이 높아졌다. 그러나. 기존의 지리 정보 시스템들은 서로 다른 형태의 공간 데이터 모델과 인터페이스를 사용하기 때문에 데이터의 공유가 어려운 문제가 있다. 이러한 문제점을 해결하기 위해 표준 공간 데이터 모델과 인터페이스를 정의한 OpenGIS 표준 명세가 제안되어 널리 사용되고 있으며 앞으로도 그 활용이 확대될 것으로 예상된다. 본 논문에서는 오디세우스 객체관계형 DBMS를 기반으로 한 OpenGIS 시스템인 오디세우스/OpenGIS를 설계하고 구현한다. 오디세우스/OpenGIS는 다음과 같은 특징을 갖는다. 첫째, OpenGIS 표준 명세 중 SQL 표준 명세를 지원하여 SQL 환경의 지리 정보 시스템 응용 프로그램들이 오디세우스 객체 관계형 DBMS를 사용할 수 있도록 한다. 둘째, OpenGIS 표준 명세 중 OLE/COM 표준 명세를 지원하여 OLE/CON 환경의 지리 정보 시스템 응용 프로그램들이 오디세우스 객체 관계형 DBMS를 사용할 수 있도록 한다. 셋째, OpenGIS 표준 명세에서 정의한 지리 정보 시스템의 기능과 DBMS를 밀결합하여 시스템의 안정성을 높인다.