• 한국통신학회논문지
• /
• 제30권7B호
• /
• pp.450-463
• /
• 2005

ATCA(Advanced Telecom Computing Architecture)는 장기간의 통신 장비 시장의 침체에 돌파구를 마련하기 위해 100여개의 관련 업계가 모여 만든 차세대 표준 네트워크 설계 규격이다. ATCA는 기존 소수의 대형 벤더들이 자사의 고유 시스템을 공급함으로써 발생했던 이기종간의 호환성 문제, 고가의 장비가격, 시스템 변경 및 확장에 있어 어려움, 수요자의 공급업체에 대한 기술 의존성과 같은 문제를 해결할 수 있을 것으로 기대되고 있다. 본 연구에서는 ATCA 기반 장비의 잠재 수요자인 기업의 입장에서 어떠한 요인들을 기준으로 시스템을 채택하는 지를 Rogers의 혁신 이론에 근거하여 살펴보고 있으며 91개 기업체를 대상으로 설문 조사를 실시하여 실증 분석하였다. 로지스틱 회귀분석을 통해 ATCA 장비 구매에 유의한 영향을 주는 요인을 기준으로 군집 분석을 실시하여 기업의 특성에 따른 ATCA 장비 도입 전략을 제시한다.

• 대한토목학회논문집
• /
• 제13권1호
• /
• pp.141-149
• /
• 1993

순수한 위성모델의 조화상수와 지상중력을 조합하여 남한지역에서의 측지기준계 1980(GRS80) 중력지오이드가 산정되었다. Stokes적분의 영역으로는 측점증력을 사용한 $20^{\prime}{\times}20^{\prime}$의 인접범위와 $10^{\prime}{\times}10^{\prime}$ 평균중력을 사용한 $2^{\circ}{\times}2^{\circ}$의 중간범위, 그리고 GEM9 조화상수를 GRS80 기준계로 변환하여 구한 $1^{\circ}{\times}1^{\circ}$평균중력을 외곽범위에 적용하였다. 경계영역을 ${\psi}_0=30^{\circ}$로 한 Stokes 적분의 결과에서는 OSU89B 모델과 약 2~3m 의 차이가 있으며 이는 $1{\times}10^{-6}$ 인 프리에어 지오이드로서 만족됨을 보여주고 있다.

• 한국물환경학회지
• /
• 제26권6호
• /
• pp.903-909
• /
• 2010

The purpose of this study was evaluated on the applicability of Load Duration Curve Method (LDC Method) using HSPF watershed model and sampling data for efficient TMDLs in Korea. The LDC Method was used for assessment pollutant characteristics in watershed and water quality variation in each water flow level. Load Duration Curve is applied for judge the level of impaired water-body and can be estimated the impaired level by pollutant, such as BOD, T-N, and T-P in this study depending on variation of stream flow. As a result, BOD, T-P was usually exceed the standard value at low flow and dry hydrologic period. Improvement of effluent concentration from WWTP and riparian buffer protection zone are effective to improve the water quality. T-N showed the worst condition at mid-range hydrologic period and moist hydrologic period. Therefore, soil erosion control program and BMPs for non-point source pollution control is effective for recovery the water quality, which can be useful method for management of water quality in the plan of recovery water quality spontaneously. Applicability of LDC Method was evaluated in the Nakbon A watershed. However, we need to consider more detailed and accumulated data set such as accurate GIS data and detail pollution data, and WWTP discharge water quality data for accurate evaluation of watershed. Overall, The LDC Method is adequate for evaluation of watersheds characteristics, and its application is recommended for watershed management and TMDL Implementation.

• 농촌지도와개발
• /
• 제8권2호
• /
• pp.159-177
• /
• 2001

This research aims to clarify what kind of competencies are the source of the competitiveness of an enterprise and the standards for the development of human resources. Its specific objectives are the following; First, to develop methods for examining competencies to carry out one’s job. Second, to draw out the competencies necessary for carrying out the jobs by jobs on the basis of the developed methods. Third, to clarify the competencies commonly needed to carry out all kinds of jobs. This study collected materials for drawing out the competencies needed to perform 21 jobs in six job groups. This was done with the help of a panel of professionals. The process for drawing out the competencies required to perform certain job was designed in six steps. These steps combine classical methods using particular reference groups as well as model methods for particular job competencies. The materials for the R&D job were gathered for three months starting from February 2001. Materials from 20 other jobs were also collected three times from the end of May to the end of October 2001. This was done through workshops with professional groups. The highlights of this study are as follows: 1) The results applying the methods developed for drawing out job competencies to the duties of investigation & research part in R&D job were presented as an example. 2) The job competencies of the company totaled 215 in 21 jobs irrespective of overlapping, which means each job has about 10 competencies on the average. 3) The common job competencies of the whole company totaled eight. namely: competency for collecting information/processing/analyzing, communication competency, presentation competency, competency for utilizing the web, competency for planning projects, competency for solving problems, competency for understanding organization/business/products of the company, and competency for satisfying customers.

• 한국콘텐츠학회논문지
• /
• 제13권3호
• /
• pp.174-183
• /
• 2013

본 연구는 한부모여성가구주의 인구사회학적 변인 및 경제적 스트레스가 삶에 질 즉 경제적 만족도와 신체적 건강상태 그리고 심리적 디스트레스가 어떻게 영향을 미치는가를 분석하였다. 연구대상은 전국 모자보호시설에 거주하는 430명의 표본을 분석자료 활용했다. SAS 9.1(Statistical Analysis System)을 이용하여 한부모여성가구주의 인구사회학적 특성을 설정된 연구모형에 의해 분석한 결과, 경제적 만족도, 신체적 건강상태, 심리적 디스트레스 즉 삶의 질에 부정적인 영향을 미치는 것으로 나타났다. 또한 한부모여성가구주가 경험하는 경제적 스트레스는 그들의 삶의 질에 부정적인 영향을 미치는 것으로 파악되었다. 특히 심리적 디스트레스에 가장 큰 영향력을 미치는 것으로 나타났으며, 경제적 만족도와 신체적 건강 상태에도 유의미한 영향을 미치는 것으로 나타났다.

• 한국콘텐츠학회:학술대회논문집
• /
• 한국콘텐츠학회 2007년도 추계 종합학술대회 논문집
• /
• pp.644-646
• /
• 2007

온라인게임 산업은 많은 성장과 발전을 이루어 왔다. 게임업체들의 고통 중의 하나로 온라인의 특성에 따라 짧아지는 게임제작 파이프라인과, 빠른 제작 스케줄에 적합하며 쉽게 게임 제작 시 응용 적용이 가능한 다양한 3D게임캐릭터 애니메이션의 형태별, 동작별, 종류별로 분류된 애니메이션 모델 기준연구를 필요로 하고 있다. 본 연구에서는 실 사례 중심으로 게임에 이용된 디지털 기반 게임 캐릭터의 요소별 모델 분류 설정을 연구 분석하여 3D게임캐릭터 애니메이션 제작에 필요한 기초자료를 도출 한 후 디지털 모션캡처시스템을 활용하여 실시간으로 다양한 캐릭터 애니메이션의 실사 움직임 제어연구를 진행하여 게임산업 및 디지털 콘텐츠 산업에 효율성이 높고 짧은 시간에 적용 가능한 캐릭터애니메이션 제작 과정 및 제작 파이프라인 도출해보고자 한다.

• 한국전자파학회논문지
• /
• 제25권3호
• /
• pp.319-332
• /
• 2014

삽입 손실은 EMI 필터의 노이즈 제거 성능을 나타내는 주된 지표로 쓰인다. 본 논문에서는 기존의 방법보다 좀 더 정확하고 편하게 삽입 손실을 측정할 수 있는 방법에 대하여 연구하였다. 이와 관련하여 EMI 필터의 비이상적인 특성들을 모두 고려하기 위해 4포트 S-파라메터 측정을 통한 임의의 전원/부하 임피던스에 대한 차동 모드와 공통 모드의 삽입 손실을 구하는 방법에 대하여 제시하였다. 이를 활용하여 EMI 필터가 사용될 회로의 전원/부하 임피던스를 알고 있을 때, 시스템에 적용된 EMI 필터의 차동 모드 삽입 손실과 공통 모드 삽입 손실를 구할 수 있다. 또한, 이를 바탕으로 적절한 소자 값을 선택하기 위해 혼합 모드 변환, 체인 혼합 모드 변환 그리고 4포트 모델링을 통하여 임의의 소자 값에 따른 전체 시스템의 삽입 손실을 예측하는 방법에 대하여 제시하였다.

• 대한기계학회논문집A
• /
• 제20권10호
• /
• pp.3199-3210
• /
• 1996

The buckling and postbuckling behaviors were sutdied analytically and experimentally for stiffened laminated composite panels under compression loading. The panels with I-, blade, -and hat-shapeed stiffeners were investigated. In the analysis, the stiffened panels were anlyzed using the nonlinear finite element method combined with an improved arc-length method. The progressive failure analysis was done by adopting the maximum stress criterion and complete unloading failure model. The effects of the fiber angles were investigated on the buckling and postbuckling behaviors. In the experiment, the web and the lower cap of each stiffener were formed by the continuous lay-up of the skin for cocuring the stiffened panels. Therefore, the separation between stiffener and skin was not found in the junction part even after postbuckling ultimate load and the stiffened panels had excellent postbuckling load carrying capacity. A shadow moire thchnique was used to monitor the out-of-plane deformations of the panels. The piezoelectric films were attached to the panels to get the failure characteristics of the panel. The analytical results on the buckling load, postbuckling ultimate load, and failure pattern showed good agreement with the experimental results.

• 한국환경과학회지
• /
• 제18권4호
• /
• pp.423-434
• /
• 2009

In recent years, the urban thermal environment has become worse, such as days on which the temperature goes above $30^{\circ}C$, sultry nights and heat stroke increase, due to the changes in terrestrial cover such as concrete and asphalt and increased anthropogenic heat emission accompanied by artificial structure. The land use type is an important determinant to near-surface air temperature. Due to these reasons we need to understand and improve the urban thermal environment. In this study, the fifth-generation Pennsylvania State University-National Center for Atmospheric Research Mesoscale Model(MMS) was applied to the metropolitan of Daegu area in order to investigate the influence of land cover changes and urban modifications increase of Albedo to the surface energy budget on the simulated near-surface air temperature and wind speed. The single urban category in existing 24-category U.S. Geological survey land cover classification used in MM5 was divided into 6 classes to account for heterogeneity of urban land cover. As a result of the numerical simulation intended for the metropolitan of Daegu assumed the increase of Albedo of roofs, buildings, or roads, the increase of Albedo (Cool scenario)can make decrease radiation effect of surface, so that it caused drops in ambient air temperature from 0.2 to 0.3 on the average during the daylight hours and smaller (or near-zero) decrease during the night. The Sensible heat flux and Wind velocity is decreased. Modeling studies suggest that increased surface albedo in urban area can reduce surface and air temperatures near the ground and affect related meteorological parameters such as winds, surface air temperature and sensible heat flux.

• 복식문화연구
• /
• 제28권3호
• /
• pp.299-312
• /
• 2020

The purpose of this study is to create a shirt sloper suitable for an elderly male body shape by producing virtual models using a 3D-virtualization program, making a torso prototype using the Yuka CAD system, and employing 3D simulation to virtualize and calibrate the model. First, the following three types of obese dummies are implemented through the CLO 3D program: Type 1 exhibits body fat in the lower body; Type 2 exhibits an obese abdomen; and Type 3 displays a balanced form of obesity. Second, for the design of the shirt pattern, the waist back length (measured value+1), back armhole depth (C/10+12+3+0.5~1.5), front armhole depth (back armhole depth 0~1), front interscye (2C/10-1+0.5-0.5), armscye depth (C/10+2+3.5+ 0.5), back interscye (2C/10-1+1), front chest C (C/4+2.5+1), back chest C (C/4+2.5-1), front hem C (C/4+2.5+1(+2)), back hem C (C/4+2.5-1(+2)), cap height (AH/3-5), and biceps width (Front AH-1, Back AH-1) are calculated. Third, the virtual attachment of the shirt pattern is resolved by increasing the front and back armhole depths, and the front and rear wrinkles are improved by adding a back armhole dart. The front hem lift and lateral pull caused by the protrusion of the abdomen are amended by increasing the margin of the chest, waist C, and hip C, with the appearance improved by balanced margin distribution in the front, back, and side panels. The improved retail pattern with an increase in the front armholes C was balanced on the torso plate.