• 대한공간정보학회지
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• 제17권1호
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• pp.71-78
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• 2009

GPS/INS를 이용한 항공사진측량의 경우 GPS 이동측위를 위해 촬영지역에 GPS 지상기준국의 설치가 필수적이다. 하지만 항공사진측량을 위한 지상기준국의 설치는 여러 가지 제한 요소들로 인해 현실적으로 어려운 경우가 많다. 이러한 문제점을 해결하기 위해 본 연구에서는 상시관측소 자료를 이동측위에 이용하여도 충분한 정확도를 확보할 수 있는 지를 분석하였다. 30초 간격으로 저장되어 있는 상시관측소 자료의 내삽을 통해 결정한 외부표정요소와 촬영지역에서 수신된 지상기준국 자료로부터 결정한 외부표정요소를 GPS/INS 항공삼각측량에 각각 적용한 후 정확도를 비교하였다. 그 결과 상시관측소 자료로 지상기준국 자료를 대체하여 사용하여도 충분한 정확도를 얻을 수 있었다.

• 한국세라믹학회지
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• 제36권4호
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• pp.333-342
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• 1999

This research was performed to investigate how the basic glaze change affected colour development at high temperature with a stable colorant (spinel structure CoAl2O4 pigment) The compounded pigment which is widely used for porcelain was also tested for the basic glazes adaptability. The data from the test were recorded in a computer data-base program. Therefore could be easily used in the study related with a pottery field. CoO : Al2O3 system spinel pigment of barium glaze lime glaze zinc glaze lead glaze and talc glaze were chosen for this study. The colors of Cobalt blue bright blue, blue purple were seen at the wave lengths of 455-480nm at the firing temperature of 1250$^{\circ}C$. Stable color were obtained from lime glaze bar-ium glaze zinc glaze. All the information in the database were used to examine all the possible result of the test in the study of porcelain. When the test results database were examined in all temperature ranges the lack of adhesion with the pigment occurred at the temperature of 1150$^{\circ}C$. The lack of adhesion is seen due to vaporization of the lead glaze.

• Bulletin of the Korean Chemical Society
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• 제30권2호
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• pp.355-362
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• 2009

The chemical modification of multi-wall carbon nanotubes (MWNTs) is an emerging area in material science. In the present study, hydroxyl functionalized oxovanadium(IV) Schiff-base; N,N'-bis(4-hydroxysalicylidene)-ethylene-1, 2-diamineoxovanadium(IV), [VO($(OH)_2$-salen)]; has been covalently anchored on modified MWNTs. The new modified MWNTs ([VO($(OH)_2$-salen)]-MWNTs]) have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron (XPS), UV-Vis, Diffuse reflectance (DRS), FT-IR spectroscopy and elemental analysis. The analytical data indicated a composition corresponding to the mononuclear complex of tetradentate Schiff-base ligand. The characterization of the data showed the absence of extraneous complex, retention of MWNTs and covalently anchored on modified MWNTs. Liquid-phase oxidation of cyclohexane with $H_2O_2$ to a mixture of cyclohexanone, cyclohexanol and cyclohexane-1,2-diol in $CH_3$CN have been reported using oxovanadium(IV) Schiff-base complex covalently anchored on modified MWNTs as catalysts. This catalyst is more selective toward cyclohexanol formation.

• Computers and Concrete
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• 제16권3호
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• pp.467-485
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• 2015

This paper presents a comprehensive work on determination of yield base shear coefficient and displacement ductility factor of three to eight story actual reinforced concrete buildings, instead of using generic frames. The building data is provided by a walkdown survey in different locations of the pilot areas. Very detailed three dimensional models of the selected buildings are generated by using the data provided in architectural and reinforcement projects. Capacity curves of the buildings are obtained from nonlinear static pushover analyses and each capacity curve is approximated with a bilinear curve. Characteristic points of capacity curve, the yield base shear capacity, the yield displacement and the ultimate displacement capacity, are determined. The calculated values of the yield base shear coefficients and the displacement ductility factors for directions into consideration are compared by those expected values given in different versions of Turkish Seismic Design Code. Although having sufficient lateral strength capacities, the deformation capacities of these typical mid-rise reinforced concrete buildings are found to be considerably low.

• Mycobiology
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• 제35권3호
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• pp.150-153
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• 2007

New $N_2O_2$ donor type Schiff base has been designed and synthesized by condensing acetoacetanilido-4-aminoantipyrine with 2-aminobenzoic acid in ethanol. Solid metal complexes of the Schiff base with Cu(II), Ni(II), Co(II), Mn(II), Zn(II), VO(IV), Hg(II) and Cd(II) metal ions were synthesized and characterized by elemental analyses, magnetic susceptibility, molar conduction, fast atom bombardment (FAB) mass, IR, UV-Vis, and $^1H$ NMR spectral studies. The data show that the complexes have the composition of ML type. The UV-Vis. and magnetic susceptibility data of the complexes suggest a square-planar geometry around the central metal ion except VO(IV) complex which has square-pyramidal geometry. The in vitro antifungal activities of the compounds were tested against fungi such as Aspergillus niger, Aspergillus flavus, Rhizopus stolonifer, Candida albicans, Rhizoctonia bataicola and Trichoderma harizanum. All the metal complexes showed stronger antifungal activities than the free ligand. The minimum inhibitory concentrations (MIC) of the metal complexes were found in the range of $10{\sim}31{\mu}g/ml$.

• 한국산학기술학회논문지
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• 제13권8호
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• pp.3680-3686
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• 2012

본 연구에서는 정보 수집을 기반으로 멀티미디어 서비스의 QoS를 효과적으로 지원하기 위한 모니터링 방법을 제시하고자 한다. 모니터링을 통하여 가입자 단말기는 자신의 현재 상태 및 주변 기지국 정보를 수집하고, 기지국은 내부 및 인접한 기지국 모니터링으로 수집된 정보를 통하여, 관련 제어 데이터를 공유하고 이를 종합 분석하여 QoS를 자체적으로 조절/제어하는 방법을 연구한다. 모니터링은 단말기 및 기지국의 상태 정보 변화에 따라 관련 기능의 설정을 동적으로 제어하고, 각각의 기능들이 변화에 적응하여 조정되고 재구성하는 과정을 주고받으면서 각 기능들이 상호 작용하게 된다. 이러한 동작들이 서비스 연속성을 만족시키는 방향으로 이루어진다.

• Wind and Structures
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• 제18권4호
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• pp.391-422
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• 2014

The high frequency force balance (HFFB) technique provides convenient measurements of integrated forces on rigid building models in terms of base bending moments and torque and/or base shear forces. These base moments or forces are then used to approximately estimate the generalized forces of building fundamental modes with mode shape corrections. This paper presents an analysis framework for coupled dynamic response of tall buildings with HFFB technique. The empirical mode shape corrections for generalized forces with coupled mode shapes are validated using measurements of synchronous pressures on a square building surface from a wind tunnel. An alternative approach for estimating the mean and background response components directly using HFFB measurements without mode shape corrections is introduced with a discussion on higher mode contributions. The uncertainty in the mode shape corrections and its influence on predicted responses of buildings with both uncoupled and coupled modal shapes are examined. Furthermore, this paper presents a comparison of aerodynamic base moment spectra with available data sets for various tall building configurations. Finally, e-technology aspects in conjunction with HFFB technique such as web-based on-line analysis framework for buildings with uncoupled mode shapes used in NALD (NatHaz Aerodynamic Loads Database) is discussed, which facilitates the use of HFFB data for preliminary design stages of tall buildings subject to wind loads.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2001년도 The Pacific Aisan Confrence On Intelligent Systems 2001
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• pp.343-351
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• 2001

World practice is evidence of that computer systems of an intellectual support of medical activities bound up with examination of patients, their diagnosis, therapy and so on are the most effective means for attainment of a high level of physician\`s qualification. Such systems must contain large knowledge bases consistent with the modern level of science and practice. To from large knowledge bases for such systems it is necessary to have a medical ontology model reflecting contemporary notions of medicine. This paper presents a description of an observation ontology, knowledge base for the physician of general tipe, architecture, functions and implementation of problem independent shell of the system for intellectual supporting patient examination and mathematical model of the dialog. The system can be used by the following specialist: therapeutist, surgeon, gynecologist, urologist, otolaryngologist, ophthalmologist, endocrinologist, neuropathologist and immunologist. The system supports a high level of examination of patients, delivers doctors from routine work upon filling in case records and also automatically forms a computer archives of case records. The archives can be used for any statistical data processing, for producing accounts and also for debugging of knowledge bases of expert systems. Besides that, the system can be used for rise of medical education level of students, doctors in internship, staff physicians and postgraduate students.

• 한국콘텐츠학회논문지
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• 제5권3호
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• pp.29-35
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• 2005

숙련된 세포유전학자가 수행하는 염색체 분석과 진단 작업은 반복적이고, 시간 소비적이며, 많은 비용이 요구된다. 이러한 이유로, 전문가를 대신하여 염색체 분석에 필요한 정보를 얻을 수 있도록 웹을 이용한 염색체 지식 베이스 기반 지능형 에이전트를 개발하였다. 즉, IF-THEH 생성규칙으로 이루어진 지식 베이스에서 정상 염색체와 비정상 염색체를 하나의 지식 영역으로 구성하고, 추론을 통해 염색체를 분석하고 진단결과를 제시하였다. 연구에 사용한 데이터는 GTG 방법으로 분염된 중기 말초혈액과 양수샘플을 핵형분류하여 얻은 2,736환자 증례의 정상 염색체와 259환자 증례의 비정상 염색체들로 구성하였다. 구축된 염색체 지식 베이스 기반 인텔리전트 에이전트는 정상 염색체와 비정상 염색체의 분석을 통해 다양한 형태학적 정보를 제공하고, 사용자와 시스템간의 상호작용을 통하여 염색체 분석과 진단을 협의할 수 있는 장점들을 지닌다.

• 한국정보통신학회논문지
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• 제20권6호
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• pp.1142-1147
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• 2016

최근 다양한 분야에 걸쳐 ICT 기술을 융합하여 지능적인 서비스를 제공하는 IoT에 대한 다양한 연구가 진행되고 있다. 특히 독일의 'Industry 4.0'의 등장으로 제조 산업에 ICT를 융합하여 생산능력을 극대화 하는 industrial IoT의 중요성이 강조되고 있다. 이에 국내에서도 industrial IoT의 근간이 되는 스마트 팩토리 보급을 위한 다양한 노력이 진행 중이다. 그러나 현재의 스마트 팩토리 시스템은 장비의 임베디드 시스템에 선언된 데이터를 통해 설비를 제어하며, 다수의 설비가 배치되어 있는 환경에 대처하기 어렵다. 본 논문에서는 industrial IoT를 위해 장비의 변수 정보를 DB화하여 장비를 제어하는 데이터베이스 접근 기반 장비 제어 시스템을 제안한다. 제안하는 시스템을 다양한 변수가 존재하는 사출 시스템에 적용하여 데이터베이스의 수정으로 다수의 장비를 제어하는데 효율적임을 확인하였다.