Three dimensional measurement

Xem 1-14 trên 14 kết quả Three dimensional measurement
  • An image is a two dimensional projection of a three dimensional scene. Hence a degeneration is introduced since no information is retained on the distance of a given point in the space. In order to extract information on the three dimensional contents of a scene from a single image it is necessary to exploit some a priori knowledge either on the features of the scene, i.e. presence/absence of architectural lines, objects sizes, or on the general behaviour of shades, textures, etc.

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  • In the present study, flow measurement using particle image velocimetry is implemented to reveal flow features of the RCP model. Velocity and vorticity distributions in the diffuser and spherical casing are obtained. The results illuminate the complexity of the flows in the RCP. Near the lower end of the discharge nozzle, three-dimensional swirling flows and flow separation are evident.

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  • The measured Nusselt numbers showed a trend similar to those of existing studies, but the absolute values showed discrepancies owing to the high Prandtl number of this system. The measured angle-dependent Nusselt numbers were analyzed for 2-D and 3-D geometries, and a multiplier was developed that enables the extrapolation of 2-D data into 3-D data.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Three-dimensional and thermal surface imaging produces reliable measures of joint shape and temperature: a potential tool for quantifying arthritis...

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  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Development of an in vitro three dimensional loading-measurement system for long bone fixation under multiple loading conditions: a technical description

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  • Microfabricated accelerometer sensors have been developed to measure acceleration in a variety of applications, including automobile airbag crash sensors and seismic activity monitors. For this thesis a three-dimensional accelerometer sensor has been created for measuring involuntary human hand motion. The sensor uses three single-axis accelerometers fabricated at the MIT Microsystems Technology Laboratory.

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  • With the advent of the atomic force microscope (AFM) came an extremely valuable analytical resource and technique, useful for the qualitative and quantitative surface analysis with sub-nanometer resolution. In addition, samples studied with an AFM do not require any special pretreatments that may alter or damage the sample, and permit a three dimensional investigation of the surface.

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  • In recent years, great advancements have been made in understanding the mechanisms of the functioning of the human brain. Technological developments such as functional magnetic resonance imaging (fMRI), positron emission tomography (PET), and magnetoencephalography (MEG) have made possible the mapping of the images of cerebral activity from hemodynamic, metabolic or electromagnetic measurements.

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  • Combinations for Three-Dimensional Force Measurements Scanning and Control Systems Piezotubes • Piezoeffect • Scan Range • Nonlinearities, Creep • Linearization Strategies • Alternative Scanning Systems • Control Systems

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  • Climate dynamicists generally characterize the Hadley circulation in terms of some derived meteorological parameters, such as the mass stream function (the nondivergent part of the flow) or the velocity potential (the divergent circulation), both of which are based on measurements of the three-dimensional wind field. Yet, we know very little about how such indices have varied in the past—beyond the most recent decades.

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  • Marti, O. Ò"AFM Instrumentation and Tips"Ó Handbook of Micro/Nanotribology. Ed. Bharat Bhushan Boca Raton: CRC Press LLC, 1999 © 1999 by CRC Press LLC AFM Instrumentation and Tips Othmar Marti 2.1 2.2 Force Detection The Mechanics of Cantilevers Compliance and Resonances of Lumped Mass Systems • Cantilevers • Tips and Cantilevers • Materials and Geometry • Outline of Fabrication 2 2.3 2.4 2.5 2.6 2.7 2.

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  • Bougherara et al. Journal of Orthopaedic Surgery and Research 2010, 5:34 TECHNICAL NOTE Technical Note Open Access A biomechanical assessment of modular and monoblock revision hip implants using FE analysis and strain gage measurements Habiba Bougherara1, Rad Zdero*1,2, Suraj Shah2, Milan Miric1, Marcello Papini1, Paul Zalzal3 and Emil H Schemitsch2,4 Abstract Background: The bone loss associated with revision surgery or pathology has been the impetus for developing modular revision total hip prostheses.

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  • Tính không chắc chắn để đo lường là một nỗ lực để thiết lập giới hạn hợp lý cho kết quả đo lường theo quy tắc tiêu chuẩn hóa. Kể từ khi đo lường hàng sản xuất chỉ là một ước tính của câu trả lời, điều kiện tiên quyết đầu tiên của một tuyên bố không chắc chắn là để thông báo cho người đọc chắc chắn rằng nhà văn như thế nào là câu trả lời là trong một phạm vi nhất định....

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  • The major cellulase secreted by the filamentous fungus Trichoderma reeseiis cellobiohydrolase Cel7A. Its three-dimensional structure has been solved and various mutant enzymes produced. In order to study the potential use of T. reeseiCel7A in the alkaline pHrange, the thermal sta-bilityofCel7Awas studiedas a functionof pHwith thewild-type and two mutant enzymes using different spectroscopic methods. Tryptophan fluorescence and CD measurements of the wild-type enzyme show an optimal thermostability between pH3.5–5.

    pdf8p tumor12 20-04-2013 25 2   Download



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