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황진하,박종희,조대현 충북대학교 건설기술연구소 2003 建設技術論文集 Vol.22 No.2
Prototype design of the database for ambient measurement data management is presented in this paper. To express the associated data generated during the whole process of ambient measurement efficiently, requirement/task analysis for database management system are peformed. And then to define and organize objects and schema for data model, conceptual and logical design are performed, which convert data model into logical schema. This prototype database is constructed by using via the object-relational data modelling approach.
뇌동맥류 파열에 의한 급성 경막하 혈종이나 뇌내혈종을 동반한 혼수상태 환자에 대한 뇌혈관 조영술을 시행하지 않은 응급수술
황수현,박용규,백선하,박인성,김은상,정진명,한종우 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10
Neurologically based clinical grading scales offer excellent prognostic information for the patient suuffering diffuse subarachnoid hemorrhaging. These grading scales are less applicable to patients with life-threatening intraparenchymal or subdural hematomas after aneurysmal rupture. During 2 and half years. 9 patients(ICH;5.SDH:1. ICH+SDH:3) in a comatose state with brain stem compression syndromes documented by computerized tomographic scans have undergone emergent operation without angiography in our neurosurgical departement. Each patient was so critically ill that we believed it unwise to delay craniotomy for diagnostic angiography. The average delay from the detection to operation was 2 hours. The origin of the hematoma was identified as a berry aneurysm of the middle cerebral artery bifurcation in seven patients and a posterior communicating artery aneurysm in two patients. One patient had a good recovery. two patients recovered with hemipardsis and mild cognitive dysfunction. two patients were vegetative and died due to pneumonia. and four patients died due to brain swelling within two weeks postoperatively. Emergent craniotomy with empiric exploration of appropriate subarachnoid cisterns after hematoma decompression may be life-saving management in some cases. The delay imposed for diagnostic angiography may be avoided in attempts to save vital minutes of severe brain stem compression.
황진하,박종회,김주한 충북대학교 건설기술연구소 2004 建設技術論文集 Vol.23 No.1
The structural system identification using neural networks is presented in this study. Among the neural networks, backpropagation neural network is adopted to fulfill the damage assessment. When the damages occur, the structural responses are changed and the responses contain the damage locations and extents. The static displacements of the truss structure are induced by the various damage states under the static load. In the neural networks the displaces are the inputs and the damage locations and extents are the outputs. The simulation informs that it is efficient to apply the neural network to the damage detection.
현장 재하시험을 통한 국내고용 교량에 대한 동적효과 분석
황진하,박종희,박광림 충북대학교 건설기술연구소 2002 建設技術論文集 Vol.21 No.2
A statistical analysis for estimation the dynamic characteristics of bridge structures is presented in this paper. The dynamic responses of the real bridges due to test vehicles and normal traffic loads are measured for 147 bridges with different types and span lengths etc. Using the measured data in field, correlation and regression analysis of vibration-related parameters are performed on SPSS, and the results are compared with Standard Specifications. From the results of this study, it considered that impact factors in Korean Specification seems to have low values, as the span length increases regardless of the structural types, and to give high load carrying factors.
황진하,박종회,정진덕 충북대학교 건설기술연구소 2002 建設技術論文集 Vol.21 No.1
A new method that performs multilevel design optimization for structural design is presented in this paper. This study demonstrates hybrid optimization method which combines a general mathematical programming algorithm with classical fully stressed design method. Systems optimization is achieved with system level constraints by the former, while the latter is exercised with local constraints in subsystem level. Numerical results for widely used truss models show the validity and efficiency of this study.
황진하,박종희,정진덕,김주한 충북대학교 건설기술연구소 2003 建設技術論文集 Vol.22 No.2
A conceptual design for the development of a remote structural monitoring system is presented in this study. First of all, to satisfy the engineering and customer requirements, requirements/functional analysis for the remote structural monitoring systems are performed in context of the systems approach. The problem definition is given, And the market competitors are analyzed by benchmarking and the alternatives are evaluated. Based on the informations from the above stage, the key elements of the systems are extracted through the functional decomposition and the schematic specifications are described.
황대용,류진춘,하태일 慶北大學校農業科學技術硏究所 1998 慶北大農學誌 Vol.16 No.-
As a result of the execution of the import liberalization and local autonomy with WTO system launching, centralized rural extension service converted to localized rural extension service. This advent of globalization and localization era affects our over all agricultural condition, moreover the duty and role of rural extension organization which take complete of rural extension, is compelled to diversified and specified technology. In this study, first we will investigate the change of agricultural, rural community, and local rural extension service in globalization and localization era. Second we will analyze the confronted problems of local rural extension service. With this study's outcome for basis, we will present new role and direction of local rural extension service which can contribute to local agricultural development.