• Journal of the Korean Geosynthetics Society
• /
• v.18 no.4
• /
• pp.115-127
• /
• 2019

The low-flow grouting injection technique, the target construction method for this study, is a method of pouring mortar into the ground by non-emission replacement principle, which can be expected to increase the density of the ground, and, in some cases, be used as a base file using the strength of the high injection solids, along with low noise, low pollution, and high durability. To verify that the dynamic characteristics of the ground are improved by the low-flow injection technique, the test work was conducted on the site and physical tests were performed, and the quality of the improvement formed in the ground was verified through the indoor test on the core and core recovery rate was analyzed. The density logs test layer calculated the volume density of the ground layer by using the Compton scattering of gamma-rays, and the sonic logs was tested on the ground around the drill hole using a detector consisting of sonar and receiver devices inside the drill hole. As a result of the measurement of the change in physical properties (density and sonic logs) before and after grouting, both properties were basically increased after infusion of grout agent. However, the variation in density increase was greater than the increase in speed after grouting, and the ground density measurement method was thought to be effective in measuring the fill effect of the filler. Strength and core recovery rates were measured from specimens taken after the age of 28 days, and the results of the test results of the diffusion and strength test of the improved products were verified to satisfy the design criteria, thereby satisfying the seismic performance reinforcement.

• The Journal of the Korea Contents Association
• /
• v.20 no.9
• /
• pp.1-10
• /
• 2020

National R & D data covers information in all fields from basic science research to industrialization, but it is expressed in technical terms, which make it difficult for the public to use. Accordingly, NTIS developed and launched the data curation service 'R&D issue service', which selects national R&D information on national and social issues and provides them to the public. Therefore, this study aims to analyze the effect of a data curation service on NTIS users' access to R&D data and suggest how to develop the curation service. The R&D issue service extracts issue from the news article and provide related national R&D projects, achievements and major research institute. All raw data used for the service are open to the public, organized in a report format and provided as PDF files. In addition, automative process is developed for all NTIS users to make individual issue packaging like administrator. The results show that 'R&D issue service' launching increases users' access and convenience to R&D data related to major issues, and the number of page views of users increased after the service was opened.

• 한국정보교육학회:학술대회논문집
• /
• 2011.01a
• /
• pp.91-101
• /
• 2011

The purpose of this paper is to quickly identify school parents, teachers, students, community needs and opinions for curriculum organizing and the implementation of an online survey system for operating educational activities. Online survey system should be implemented based on Limesurvey to reduce costs and administrative costs. Limesurvery is available without the development of the separate program and offers the form of web-based template system, complete design, layout. Also, Limesurvey offers basic statistical analysis of survey data. Limesurvey can be executed by installing the program on a web hosting, typing database information. Limesurvey can be made a graph of the statistical results. Besides, Limesurvery can be stored in the form of HTML, Word, Excel, CSV Files and can be stured as basic datas for SPSS or PASW, R data, other statistical processing programs. If we could be operate Limesurvey in the form of open source-based survey program in elementary school, we could be reduced teacher's unnecessary work for statistics and overcame the problem of offline survey system.

• Communications of Mathematical Education
• /
• v.28 no.3
• /
• pp.353-366
• /
• 2014

Recently, the widespread usage of 3D-Printing has grown rapidly in popularity and development of a high level technology for 3D-Printing has become more necessary. Given these circumstances, effectively using mathematical knowledge is required. So, we have developed free web tools for 3D-Printing with Sage, for mathematical 3D modeling and have utilized them in college education, and everybody may access and utilize online anywhere at any time. In this paper, we introduce the development of our innovative 3D-Printing environment based on Calculus, Linear Algebra, which form the basis for mathematical modeling, and various 3D objects representing mathematical concept. By this process, our tools show the potential of solving real world problems using what students learn in university mathematics courses.

• Communications of Mathematical Education
• /
• v.34 no.1
• /
• pp.17-39
• /
• 2020

The purpose of this study is to analyze the mathematical beliefs of students and teachers by Latent Class Analysis(LCA). This study surveyed 60 teachers about beliefs of 'nature of mathematics', 'mathematic teaching', 'mathematical ability' and also asked 1850 students about beliefs of 'school mathematics', 'mathematic problem solving', 'mathematic learning' and 'mathematical self-concept'. Also, this study classified each student and teacher into a class that are in a similar response, analyzed the belief systems and built a profile of the classes. As a result, teachers were classified into three types of belief classes about 'nature of mathematics' and two types of belief classes about 'teaching mathematics' and 'mathematical ability' respectively. Also, students were classfied into three types of belief classes about 'self concept' and two types of classes about 'School Mathematics', 'Mathematics Problem Solving' and 'Mathematics Learning' respectively. This study classified the mathematics belief systems in which students were categorized into 9 categories and teachers into 7 categories by LCA. The belief categories analyzed through these inductive observations were found to have statistical validity. The latent class analysis(LCA) used in this study is a new way of inductively categorizing the mathematical beliefs of teachers and students. The belief analysis method(LCA) used in this study may be the basis for statistically analyzing the relationship between teachers' and students' beliefs.

• Composites Research
• /
• v.23 no.2
• /
• pp.1-9
• /
• 2010

This study analyzes the apparent fracture toughness of a thick-walled cylinder with a functionally graded material (FGM) coating at the inner surface of the cylinder. The cylinder is assumed to have a single radial edge crack emanating from its inner surface. The crack surfaces and the inner surface of the cylinder are subjected to an internal pressure. The incompatible eigenstrain developed in the cylinder due to nonuniform coefficient of thermal expansion as a result of cooling from sintering temperature is taken into account. Based on a method of evaluating stress intensity factor introduced in our previous study, an approach is developed to calculate apparent fracture toughness. The approach is demonstrated for a cylinder with a TiC/$Al_{2}O_{3}$ FGM coating and some numerical results of apparent fracture toughness are presented graphically. The effects of material distribution profile, cylinder wall thickness, application temperature, and coating thickness on the apparent fracture toughness are investigated in details. It is found that all of these factors play an important role in controlling the apparent fracture toughness of the cylinder.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.10
• /
• pp.634-641
• /
• 2017

This case study investigated the effects of sensory integration therapy on social behaviors and feeding of children with intellectual disabilities who lack sensory processing abilities. The study was conducted done from September to December, 2016, and an ABA(two sessions, nine sessions, two sessions/total 13 sessions) design was used among Single Subject Research Design. Nine sessions of sensory integration program were conducted for 50 minutes each, and Wilbarger's Protocol was employed 2-3 times per day. To understand children's basic development levels, observation evaluation of each area and social maturity scale were conducted in the early stage. To Understand the children's sensory processes ability, a Sensory Profile(SP) was developed, while the activities of daily living and task performance ability scale were evaluated using the Functional Independence Measure for children(WeeFIM) and Canadian Occupational Performance Measure(COPM), respectively. Search behavior and feeding, which are social behaviors of children, were evaluated through observation. The results showed that the sensory integration program improves social behaviors of children and enables them to eat. The children's feeding was stable from the 5th session after the intervention, and the search behaviors started to change from 3 weeks after the intervention and became stable after 7 weeks. These results indicate that the sensory integration program is effective in mediating difficulties that children with intellectual disabilities who lack sensory processing ability experience in daily living.

• 한국공간정보시스템학회:학술대회논문집
• /
• 2003.11a
• /
• pp.78-83
• /
• 2003

OGC(Open GIS Consortium, Inc.)에서 2000년에 XML의 지리정보 처리를 위한 GML 1.0이 제안된 이후 최근 GML 3.0이 발표되기까지 국제적으로는 다양한 GIS 응용분야에서 GML을 현실 문제에 이용하고자 하는 시도가 이루어지고 있다. 현재 우리나라에서도 국가 GIS(NGIS)에서 GML을 도입하여 국내 표준안으로 추진하고자 다양한 기반연구가 진행되고 있다. 본 연구는 중요한 GIS 응용중의 하나인 지질자원 정보 분야에서 GML을 활용하기 위한 기반연구로서 우리나라의 표준 지질도(또는 수치지질정보)와 기타 지질자원 정보 인프라 구축에 적용될 수 있는 다양한 지구과학자료를 대상으로 하였다. 따라서 본 연구에서는 지질자원 분야에서의 GML 응용을 위한 기반 데이터 모델과 이를 처리하기 위한 아키텍처를 UML 기법으로 설명하고, 이를 바탕으로 시험 구현된 운용환경에서 실제 대상 지역을 선정하여, 연구지역에 대한 지질자원 정보의 GML 적용 사례를 제시하고자 한다. 이를 위한 연구 내용으로는 수치 지질도를 XML-GML의 기본 스키마구조에 따라 엔코딩한 뒤, 주제정보의 표현을 위한 XSLT, SVG 파일 변환 처리 등을 수행하였다. 결론적으로 본 연구는 지질자원 분야의 정보화 인프라 구축을 목적으로 하는 기초 시험연구로 수행되었는 바, 우리나라에서는 2001년 이후 GIS 수치 주제도로서 수치 지질도의 보급이 활성화되면서, 이 정보를 제작/공급하는 기관이나 업무에 사용하는 기관 등에서 GML 기반으로 데이터를 제작하거나 운용이 가능할 것으로 생각된다. 또한, 다른 분야에서 GIS 주제정보를 다루는 경우에도 GML을 주제정보와 연계하여 현실 문제에 적용이 가능한 창조 모델로 이용될 수 있을 것으로 생각된다.}94,\;29.4{\pm}30.3,\;45.1{\pm}44$로 Mel 10군과 Mel 30군이 유의적인 감소를 보였으나(p<0.05) 이들 두 군 간의 차이는 나타나지 않았다. 이상의 결과로, 랫트에서 복강수술 후 melatonin 10mg/kg투여가 복강 내 유착 방지에 효과적이라고 생각된다.-1}{\cdot}yr^{-1}$로서 두 생태계에 축적되었다.여한 3,5,7군에서 PUFA 함량이 증가한 반면, SFA 함량은 감소하여 P/S 비율, n-3P/n-6P 비율은 증가하는 경향이었으며 이는 간장의 인지질, 콜레스테롤 에스테르, 총 지질의 지방산조성에서도 같은 경향을 볼 수 있었다.X>$(C_{18:2})$와 n-3계 linolenic acid$(C_{18:3})$가 대부분을 차지하였다. 야생 돌복숭아 과육 중의 지방산 조성은 포화지방산이 16.74%, 단불포화지방산 17.51% 및 다불포화지방산이 65.73%의 함유 비율을 보였는데, 이 중 다불포화지방산인 n-6계 linoleic acid$(C_{18:2})$와 n-3계 linolenic acid$(C_{18:3})$가 지질 구성 총 지방산의 대부분을 차지하는 함유 비율을 나타내었다.했다. 하강하는 약 4일간의 기상변화가 자발성 기흉 발생에 영향을 미친다고 추론할 수 있었다. 향후 본 연구에서 추론된 기상변화와 기흉 발생과의 인과관계를 확인하고 좀 더 구체화하기 위한 연구가 필요할 것이다.게 이루어질 수 있을 것으로 기대된다.는 초과수익률이 상승하지만, 이후로는 감소하므로, 반전거래전략을 활용하는 경우 주식투자기간은 24개월이하의 중단기가 적합함을 발견하였다. 이상의 행태적 측면과 투자성과측면의 실

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.4
• /
• pp.273-282
• /
• 2016

This study analyzed the origin and status of the registration system of water leisure craft to suggest an improvement plan for the ocean leisure industry. To identify the transition of the registration system, related water leisure craft, registration procedures and revised acts from "water leisure safety act", which was established in the early 2000 and enacted since then were examined. To understand the problems raised, the management of the registration system and related other systems were analyzed. The results were as follows. First, the registration system was designed just to check the number of registrations of water leisure craft so it does not provide various and useful information that administrators and registrants want. Second, it is impossible to utilize and reconstruct the information regarding water leisure craft. In addition, the current registration system does not have a data sharing system with the Ministry of Government Administration and Home Affairs so self-governing administrations are not connected to each other or to other electronic government systems. To resolve these problems, the construction of a new registration system is required. The new registration system of water leisure craft should facilitate not only processing registration files and administration work, but also multiple electronic governmental services that provide the water leisure users with useful information and encourage them to learn about their craft management and so on.

• Proceedings of the KAIS Fall Conference
• /
• 2009.05a
• /
• pp.339-342
• /
• 2009

본 연구는 대한민국건강도시협의회 회원도시 23개 자치단체 건강도시 추진 담당자에게 건강도시 추진현황 및 발전방향을 모색하기 위해 2007년 2월부터 2007년 12월 까지 대한민국건강도시협의회 회원 도시 담당자들에게 구조화된 설문지를 통해 건강도시 사업 일반현황, 건강도시 사업 기본현황, 건강도시 발전방향 등에 대하여 조사 분석 하였으며 모든 처리 방법은 SPSS 12.0 version 통계프로그램을 이용하였다. 본 연구의 결과는 다음과 같다. 1. 연구대상자의 지자체 일반현황은 23개자치단체중 도시형(47.8%), 농촌형(52.2%)이며, 가입년도별로는2004년(17.4%), 2005년(30.4%), 2006년(26.1%), 2007년(26.1%)로 나타났다. 2. 건강도시 사업추진현황을 보면, 장기계획수립(43.4%), 생활터접근(69.5%), 민정보제공(78.2%), 협력대학(82.6%), 부서협력잘됨(34.7%), 네트워크적극참여(34.7%), 세미나실시(47.8%)로 나타났다. 3. 건강도시 발전방향 으로는 추진 시 가장 어려운 점은 사업개발(39.0%), 우선순위로는 부서협력(30.4%), 핵심인물단체장(82.6%), 발전가능성지속발전(65.2%), 발전기여(86.9%), 시행주체국가주도(52.1%)로 나타났다. 4. 도시형태별 건강친화성 평가점수는 69점이하 도시형(8.60%), 70~79점농촌형(21.7%), 80~89점 도시형(26.0%), 농촌형(17.3%), 90정이상 도시형(13.0%), 농촌형(13.0%)로 나타났다. 5. 조직구성여부별 건강도시 기본현황 추진실태를 살펴보면, 조례제정여부 조직구성(100%), 미 구성(81.8%), 운영위원회 구성 조직구성(100%), 미 구성(54.5%), 프로파일작성 조직구성(100%), 미 구성(81.8%), 예산확보 조직구성(100%), 미 구성(81.8%)로 나타났다. 조직구성이 건강도시 사업추진에 많은 영향을 미치는 것으로 분석된다. 향후 건강도시 사업추진 시에는 건강도시를 추진하는 담당부서 구성이 가장 중요한 것으로 판단되며, 건강도시 사업추진은 먼저 시작한 도시가 건강친화성 평가 점수에서 높게 나타났다. 이에 따라 건강도시 사업은 일시적인 사업이 아닌 끊임없이 노력하는 도시가 되어야 하며, 건강도시 사업의 활성화를 위해서는 국가주도하에 실시하는 것이 절실히 필요 한 것으로 판단된다.