• 한국지능시스템학회:학술대회논문집
• /
• 한국퍼지및지능시스템학회 2004년도 춘계학술대회 학술발표 논문집 제14권 제1호
• /
• pp.422-425
• /
• 2004

Many believe that electronic distance teaming education transform higher education, saving money and improving learning qualify So, the open University, which teaches around 280,000 students at a distance, is examining the adaption of its distance teaching methods for the internet. But, there are only one type of distance learning education of one way direction. To understand all of a student which selected some of e teaming course, teacher must check that how many student to understand and what is the difficult problems. Without checking this condition, It will be a very difficult and boring distance learning course. In this paper, we introduce of intelligent learning contents of full duplex direction that teach understanding student and not understanding student. The computer simulation results confirms that full duplex e learning system has been proven to be much more efficient than one way direction which not considering about understanding problems.

• 천문학회지
• /
• 제44권1호
• /
• pp.1-11
• /
• 2011

A sample of 145 JHK-2MASS observations of NGC open star clusters is studied, of which 132 have never been studied before. Twelve are classified as non-open clusters and 13 are re-estimated self-consistently, after applying the same methods in order to compare and calibrate our reduction procedures. The fundamental and structural parameters of the 120 new open clusters studied here are derived using color-magnitude diagrams of JHK Near-IR photometry with the fitting of solar metallicity isochrones. We provide here, for the first time, a catalog of the main parameters for these 120 open clusters, namely, diameter, distance, reddening and age.

• Restorative Dentistry and Endodontics
• /
• 제37권2호
• /
• pp.68-73
• /
• 2012

Objectives: The purpose of this study was to assess the accuracy of Root ZX (J. Morita Corp.) according to the location of major foramen and open apex. Materials and Methods: 81 mandibular premolars with mature apices were selected. After access preparation, 27 teeth were instrumented to simulate open apices. 54 teeth were classified according to location of major foramen under surgical microscope (${\times}16$). The file was fixed at the location of apical constriction by Root ZX using glass ionomer cement .The apical 4 mm of the apex was exposed and photo was taken and the distance from file tip to the major foramen was measured by calibrating metal ruler on graph paper. The results were statistically analyzed using ANOVA and Scheffe test at p < 0.05 level. Results: Mean distance from file tip to major foramen was 0.308 mm in Tip foramen group (I), 0.519 mm in Lateral foramen group (II) and 0.932 mm in open apex group (III). Root ZX located apical constriction accurately within ${\pm}0.5mm$ in group I of 85.71%, in group II of 59.09%, and in group III of 33.33%. There was a statistically significant difference between group I and III (p < 0.05). Conclusion: Root ZX located apical constriction accurately regardless of location of major foramen. However, Root ZX couldn't find it in open apex. Clinicians have to use a combination of methods to determine an appropriate working length at open apex. It may be more successful than relying on just electronic apex locator.

• Journal of Oral Medicine and Pain
• /
• 제23권4호
• /
• pp.379-385
• /
• 1998

A patient with TMJ osteoarthritis and anterior open bite was treated with an intermaxillary traction device. Pretreatment examination revelaed a pain in both TMJ during mouth opening, moderate tendernesso f left sternocleidomastoid and right trapezius muscles. Anterior open Bite was aobserved with interincisal distance of 2mm. Tomograms and MRI showed anterior disc displacement withouit reductoin of both temporomandibular joints, and the condyles were flattened and slightly eroded. A pair of full-coverage occlusal appliances was made on both maxillary and mandibular dentition, with pivoting fulcrum on the site of the second moalr. Traction force was gained by the intermaxillary orthodontic elastics which were hooked by orthodontic brackets on the labial surfaces of the upper and lower anterior and premolar teeth. After 8 weeks of traction treatment, the joint pain was subsided completely and the anterior open bite was closed to get an edge to edge relationship of anterior teeth.

• 한국정보교육학회:학술대회논문집
• /
• 한국정보교육학회 2004년도 동계학술대회
• /
• pp.522-530
• /
• 2004

본 논문에서는 교사들의 그래픽 리터러시를 위한 원격교육에 대한 코스웨어를 개발함으로써 Open Contents System을 구축함을 목적으로 한다. 코스웨어 개발을 위해 본 논문에서는 교육내용의 선정$\Rightarrow$스토리 보드의 작성$\Rightarrow$구조 설계 및 미디어데이터 제작$\Rightarrow$저작 과정$\Rightarrow$출판 및 활용의 5단계의 전략을 세웠으며, 이를 템플릿화해 Open Contents화하였다. 특히 구조 설계 및 미디어데이터 제작 단계에서 폴더 구조 및 파일 넘버링에 대한 템플릿은 정보 수정 및 보안을 용이하게 하는 장점이 있다. 본 논문에서 구축한 Open Contents System은 템플릿화 된 소스를 공개하여 일반 교수자의 컨텐츠 설계, 개발, 운영관리를 가능하게 할 수 있다.

• 소성∙가공
• /
• 제20권1호
• /
• pp.5-10
• /
• 2011

The main objective of the present study is to predict the process window of injection-compression molding corresponding to the capability of an injection machine for fabricating 7 inch LGP. The open distance and volume filled after injection stage were found to be two important factors that affect critical requirements such as flow length, injection pressure and clamping force for the process. Process window for the key factors was also predicted by response surface method. As a result, predicted process window for open distance and volume filled after injection stage satisfying the critical requirement with a given injection machine was in the range of 60 ~ 75%, and 104.00 ~ 104.25%, respectively.

• Journal of information and communication convergence engineering
• /
• 제4권2호
• /
• pp.62-66
• /
• 2006

The objective of this thesis is to measure the limit of the real space where wireless Local Area Network (LAN) is used, and to apply this result as reference to set up a real Wireless LAN environment. The organized circumference was composed of Wireless LAN based on IEEE 802.11b of the American standard, and the examination is carried out on the campus. On the real condition of office environment and open space, the ratio of available distance to a signal at each distance was measured and this result was studied as data to embody wireless LAN on the campus. The measurement under an indoor environment was executed under circumstance having two walls and open space, however, was executed respectively under three circumstances: Where no obstacle, where one wall exists, and where two or more walls exist.

• 천문학회지
• /
• 제49권2호
• /
• pp.53-57
• /
• 2016

We present an optical UBVRI photometric analysis of the poorly studied open star cluster IC 2156 using Sloan Digital Sky Survey data in order to estimate its astrophysical properties. We compare these with results from our previous studies that relied on the 2MASS JHK near-infrared photometry. The stellar density distributions and color-magnitude diagrams of the cluster are used to determine its geometrical structure, real radius, core and tidal radii, and its distance from the Sun, the Galactic plane, and the Galactic center. We also estimate, the age, color excesses, reddening-free distance modulus, membership, total mass, luminosity function, mass function, and relaxation time of the cluster.

• Biomolecules & Therapeutics
• /
• 제18권2호
• /
• pp.219-225
• /
• 2010

We tested whether ginsenosides $Rg_3$-standardized ginseng extract (RGE) has anti-stress effects in restraint-stressed animals. RGE increased time spent in the open arms and open arm entries in the elevated plus-maze test. In addition, RGE blocked the reduction of center zone distance and stereotypes behaviors in the open-field test. RGE also increased head dips in stressed mice, indicating anxiolytic-like effects. Stress decreased movement distance and duration, burrowing, and rearing frequency but increased face washing and grooming. RGE significantly reversed burrowing and rearing activity in stressed mice. In addition, we measured sleep architecture in restraint stressed rats using EEG recorder. Stress increased rapid eye movement (REM) sleep, but total sleep and non-rapid eye movement (NREM) sleep were not changed. RGE did not affect sleep architecture in stressed rats. These behavioral experiments suggest that RGE has anti-stress effects in restraint-stressed animal models.

• 한국지역지리학회지
• /
• 제18권1호
• /
• pp.118-127
• /
• 2012

본 연구에서는 지리정보시스템의 공간분석 기법을 활용하여 동물병원의 공간분포 특징을 분석하였다. 그리고 분석을 위해 필요한 기초자료인 동물병원 GIS 데이터는 인터넷의 Open API를 통하여 서비스되는 검색 기능을 활용하여 조사하고 구축하였다. 연구결과 2011년 현재 전국에 약 4,100 곳의 동물병원이 조사되었으며, 이들 중 47%인 1,960 곳이 수도권에 집중적으로 분포하고 있었다. 서울에 위치하는 동물병원의 입지요인을 분석한 결과 여성 인구의 비율이 높으면서 인구가 많고, 주거형태는 아파트인 지역으로 나타났으며, 여성인구만을 고려하였을 때는 일반적으로 25~44세의 연령층이 많이 거주하는 지역에 동물병원의 수가 상대적으로 많았다. 접근성은 대중교통인 지하철보다는 자가용과 도보로 접근이 가능한 도로변에 주로 입지하는 것으로 나타났다.