Relevant bibliographies by topics / Channel visualization

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Channel visualization'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Channel visualization"

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Xing, Wei, Jin Ling Lv, and Mei Xian. "Research on the Interactive Visualization Technique of Accounting Information System." Advanced Materials Research 998-999 (July 2014): 1335–38. http://dx.doi.org/10.4028/www.scientific.net/amr.998-999.1335.

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This article aims to explore the deficiencies of the existing accounting information system, project theories and methods to optimize the accounting information system and provide theoretical and methodological support for the establishment and operation of interactive visualization accounting information system. Contribution may be demonstrated in the following aspects: (1) The integration of human-machine theory and accounting information system and to come up with the interactive visualization program of accounting information system based on users' experience; (2) To build a SOA-based accounting information systems interactive visualization platform with the pivot table function and to achieve interactive visualization of the accounting information system processing; (3) To use the concept of accounting channels in the accounting information system interface, classify the display of information in accordance with the accounting channel and to divide accounting channel into four channels based on the Balanced Score Card model.
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SUN, JIAN-HONG, and CHIN-TSAU HSU. "FLOW VISUALIZATION OF SUBMERGED JETS IN NARROW CHANNELS." Modern Physics Letters B 23, no. 03 (January 30, 2009): 377–80. http://dx.doi.org/10.1142/s0217984909018448.

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In order to study the effect of wall on the flow pattern of a submerged turbulent water jet in narrow channels, the flow field was visualized by a laser-induced fluorescence (LIF) system at different Reynolds numbers. Those images showed that flow motion in a narrow channel is different from that of a turbulent plane jet without narrow channels. There are three flow patterns in narrow channels: stable impinging, stable jet with recirculation vortices and flapping turbulent jet.
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Guillaume, D. W., and J. C. LaRue. "Synchronous Vortex Shedding (Vortex Pumping) Downstream of a Flat Plate Array." Journal of Fluids Engineering 122, no. 1 (November 3, 1999): 183–85. http://dx.doi.org/10.1115/1.483248.

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Flow visualization and statistics, obtained downstream of an array of flat plates, are presented. Flow visualization shows that the mean separation between streaklines for the flow downstream of adjacent channels is negatively correlated. Consistent with this observation, the zero-time cross correlation of the fluctuating velocity between adjacent plates is negative. Vortices shed at the trailing edges of the bounding surfaces that form a channel in the plate array are in-phase, but they are nearly 180 deg out-of-phase with the vortices shed at the trailing edges of the bounding surfaces of adjacent channels. Relative to the mean velocity, the axial velocity on the midplane of the channel increased in the region between each pair of vortices. At downstream positions not near the vortex pair, the velocity on the midplane is relatively decreased. Hence, vortices shed at the trailing edges of the channel surfaces lead to “vortex pumping,” which is consistent with the negative correlation of the fluctuating velocity on the midplanes between adjacent channels. [S0098-2202(00)01701-6]
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Lobodenko, Lidia Kamilovna. "Visualization of advertising media text on TV channels’ websites: creative technologies." Journal of Flm Arts and Film Studies 6, no. 1 (March 15, 2014): 124–36. http://dx.doi.org/10.17816/vgik61124-136.

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The article examines the processes of transition to multimedia broadcasting platforms in the Internet introducing creative technology of advertising media text visualization to a new level. Present-day creative technologies provide non-standard use of verbal and nonverbal communication tools driving the audience to advertising media copies. The problem of studying creative technologies of advertising media copy visualization for channel websites is actually underexplored. Nevertheless a new trend in advertising visualization of ad units and messages in the Internet demands of manufacturers pooled knowledge of the advertising product displayed. Thus conventional terrestrial channels acquire both a new business assignment and additional financial support. The article provides theoretical justification of basic concepts, that is "creativity", "creative idea" and "creative technology." Basic elements dominating in development of visualized advertising are distinguished as the guidelines for creative technologies of advertising media text visualization on channel websites, including an exclusive style and advertising image formation technology. Media content of websites of 6 federal (national) TV channels included in the 1st and 2nd multiplexes of interactive digital television in Russia is specially scrutinized as a potent fact. Multimedia broadcasting platforms are shaped in the new informative and communicative environment conditioned by rapidly progressing innovative technologies, which renders to creative technologies of advertising media text visualization both dynamics of transformations and additional advertising product properties: multimediacity, interactivity, onlinity and hypertextuality.
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Hong, Gang, Xiao Yan, Yanhua Yan, Jianjun Xu, and Zejun Xiao. "ICONE19-43258 Visualization of Bubble Size Distribution in Inclined Rectangular Channel." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2011.19 (2011): _ICONE1943. http://dx.doi.org/10.1299/jsmeicone.2011.19._icone1943_108.

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Ito, Daisuke, Horst-Michael Prasser, and Masanori Aritomi. "ICONE19-43913 VISUALIZATION OF TWO-PHASE INTERFACIAL STRUCTURES IN NARROW CHANNEL." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2011.19 (2011): _ICONE1943. http://dx.doi.org/10.1299/jsmeicone.2011.19._icone1943_343.

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SUGII, Yasuhiko, Masa-aki ISHIKAWA, and Koji OKAMOTO. "Visualization of gas flow in micro-channel." Journal of the Visualization Society of Japan 25, Supplement1 (2005): 287–88. http://dx.doi.org/10.3154/jvs.25.supplement1_287.

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Tulapurkara, E. G., B. H. Lakshmana Gowda, and N. Balachandran. "Laminar flow through slots." Journal of Fluid Mechanics 190 (May 1988): 179–200. http://dx.doi.org/10.1017/s0022112088001272.

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Laminar flow through slots is investigated using a flow-visualization technique and the numerical solution of the Navier-Stokes equations for steady flow. In the flow situation studied here, the fluid enters an upper channel blocked at the rear end and leaves through a lower channel blocked at the front end. The two channels are interconnected by one, two and three slots. The flow-visualization technique effectively brings out the various features of the flow through slot(s). The ratio of the slot width to the channel height w/h is varied between 0.5 to 4.0 and the Reynolds number Re, based on the velocity at the entry to the channel and the height of the channel, is varied between 300 and 2000. Both w/h and Re influence the flow in general and the extent of the regions of recirculating flow in particular. The Reynolds number at which the vortex shedding begins depends on w/h. Computations are carried out using the computer code 2/E/FIX of Pun & Spalding (1977). The computed flow patterns closely resemble the observed patterns at various Reynolds numbers investigated except around the Reynolds number where the vortex shedding begins.
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Delamarche, Christian, Daniel Thomas, Jean-Paul Rolland, Alexandrine Froger, Jean Gouranton, Maria Svelto, Peter Agre, and Giuseppe Calamita. "Visualization of AqpZ-Mediated Water Permeability in Escherichia coli by Cryoelectron Microscopy." Journal of Bacteriology 181, no. 14 (July 15, 1999): 4193–97. http://dx.doi.org/10.1128/jb.181.14.4193-4197.1999.

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ABSTRACT Transport of water across the plasma membrane is a fundamental process occurring in all living organisms. In bacteria, osmotic movement of water across the cytoplasmic membrane is needed to maintain cellular turgor; however, the molecular mechanisms of this process are poorly defined. Involvement of aquaporin water channels in bacterial water permeability was suggested by the recent discovery of the aquaporin gene, aqpZ, in Escherichia coli. By employing cryoelectron microscopy to compare E. coli cells containing (AqpZ+) and lacking (AqpZ−) aquaporin, we show that the AqpZ water channel rapidly mediates large water fluxes in response to sudden changes in extracellular osmolarity. These findings (i) demonstrate for the first time functional expression of a prokaryotic water channel, (ii) evidence the bidirectional water channel feature of AqpZ, (iii) document a role for AqpZ in bacterial osmoregulation, and (iv) define a suitable model for studying the physiology of prokaryotic water transport.
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Fonoff, Erich Talamoni, William Omar Contreras Lopez, Ywzhe Sifuentes Almeida de Oliveira, and Manoel Jacobsen Teixeira. "Microendoscopy-guided percutaneous cordotomy for intractable pain: case series of 24 patients." Journal of Neurosurgery 124, no. 2 (February 2016): 389–96. http://dx.doi.org/10.3171/2014.12.jns141616.

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OBJECT The aim of this study was to show that microendoscopic guidance using a double-channel technique could be safely applied during percutaneous cordotomy and provides clear real-time visualization of the spinal cord and surrounding structures during the entire procedure. METHODS Twenty-four adult patients with intractable cancer pain were treated by microendoscopic-guided percutaneous radiofrequency (RF) cordotomy using the double-channel technique under local anesthesia. A percutaneous lateral puncture was performed initially under fluoroscopy guidance to localize the target. When the subarachnoid space was reached by the guiding cannula, the endoscope was inserted for visualization of the spinal cord and surrounding structures. After target visualization, a second needle was inserted to guide the RF electrode. Cordotomy was performed by a standard RF method. RESULTS The microendoscopic double-channel approach provided real-time visualization of the target in 91% of the cases. The other 9% of procedures were performed by the single-channel technique. Significant analgesia was achieved in over 90% of the cases. Two patients had transient ataxia that lasted for a few weeks until total recovery. CONCLUSIONS The use of percutaneous microendoscopic cordotomy with the double-channel technique is useful for specific manipulations of the spinal cord. It provides real-time visualization of the RF probe, thereby adding a degree of safety to the procedure.
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Dissertations / Theses on the topic "Channel visualization"

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Komral, Ata. "Heat transfer studies and flow visualization of a rectangular channel with an offset strip fin array." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA306675.

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Thesis (M. S. in Mechanical Engineering) Naval Postgraduate School, September 1995.
Thesis advisor(s): Matthew Kelleher. "September 1995." Includes bibliographical references. Also available online.
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Suarez, Carlos M. "Heat transfer studies and flow visualization of a rectangular channel with an offset-plate-fin array." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA311664.

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Longest, Jerry Mark. "Flow visualization studies in (1) a curved rectangular channel with 40 to 1 aspect ratio and (2) a straight channel with imposed bulk flow unsteadiness." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/25952.

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VYAS, SAURABH. "EXPERIMENTAL CHARACTERIZING OF VORTEX STRUCTURE IN SINUSOIDAL WAVY CHANNEL AND A CASE STUDY FOR FUEL CELL APPLICATIONS." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1132255225.

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Quinteros, Milton I. "Design and Software Validation of Coded Communication Schemes using Multidimensional Signal Sets without Constellation Expansion Penalty in Band-Limited Gaussian and Fading Channels." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1937.

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It has been well reported that the use of multidimensional constellation signals can help to reduce the bit error rate in Additive Gaussian channels by using the hyperspace geometry more efficiently. Similarly, in fading channels, dimensionality provides an inherent signal space diversity (distinct components between two constellations points), so the amplitude degradation of the signal are combated significantly better. Moreover, the set of n-dimensional signals also provides great compatibility with various Trellis Coded modulation schemes: N-dimensional signaling joined with a convolutional encoder uses fewer redundant bits for each 2D signaling interval, and increases intra-subset minimum squared Euclidean distance (MSED) to approach the ultimate capacity limit predicted by Shannon's theory. The multidimensional signals perform better for the same complexity than two-dimensional schemes. The inherent constellation expansion penalty factor paid for using classical mapping structures can be decreased by enlarging the constellation's dimension. In this thesis, a multidimensional signal set construction paradigm that completely avoids the constellation expansion penalty is used in Band-limited channels and in fading channels. As such, theoretical work on performance analysis and computer simulations for Quadrature-Quadrature Phase Shift Keying (Q2PSK), Constant Envelope (CE) Q2PSK, and trellis-coded 16D CEQ2PSK in ideal band-limited channels of various bandwidths is presented along with a novel discussion on visualization techniques for 4D Quadrature-Quadrature Phase Shift Keying (Q2PSK), Saha's Constant Envelope (CE) Q2PSK, and Cartwright's CEQ2PSK in ideal band-limited channels. Furthermore, a metric designed to be used in fading channels, with Hamming Distance (HD) as a primary concern and Euclidean distance (ED) as secondary is also introduced. Simulation results show that the 16D TCM CEQ2PSK system performs well in channels with AWGN and fading, even with the simplest convolutional encoder tested; achievable coding gains using 16-D CEQ2PSK Expanded TCM schemes under various conditions are finally reported.
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Marciszko, Tobias. "A tool for optimized layout of flat cable harnesses for future on-board cabling systems in cars." Thesis, Linköping University, Department of Computer and Information Science, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2325.

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Current cabling systems in cars are about to be, completely or partially, replaced by a cabling technology called flexible flat cables, FFCs. This new technology requires tools that can assist engineers in the design process of the cable layouts. The aim of this thesis is to develop a software demonstrator of a concept tool for this purpose.

The task is divided into three problem areas. Topology modeling, optimization and visualization. An editor is to be implemented which handles creation and modification of topologies which represents FFC harnesses. The optimization is performed using global and local routing. The global routing handles optimization on topology level, defining net paths in the topology. Local routing handles the exact net placement on each bus cable. Finally, the local routing solutions should be graphically presented to the user.

The topology modeling requirement was implemented as a graph layouteditor. Global routing is performed using graph search techniques and local routing is based on VLSI channel routing methods. Visualization is implemented for the local routing solutions using the SVG format.

The developed application handles most of the requirements. The editor has support for an XML netlist which is used for specifying connectors and nets used in the topology. Global routing and local routing can be performed on the topology. Prerouting of nets can be performed on both global and local level. Support for assigning specific cables, from a library, to bus cables is possible.

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Perkins, Richard Mark. "PIV Measurements of Turbulent Flow in a Rectangular Channel over Superhydrophobic Surfaces with Riblets." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5547.

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In this thesis I investigate characteristics of turbulent flow in a channel where one of the walls has riblets, superhydrophobic microribs, or a hybrid surface with traditional riblets built on a superhydrophobic microrib surface. PIV measurements are used to find the velocity profile, the turbulent statistics, and shear stress profile in the rectangular channel with one wall having a structured test surface. Both riblets and superhydrophobic surfaces can each provide a reduction in the wall shear stress in a turbulent channel flow. Characterizing the features of the flow using particle image velocimetry (PIV) is the focus of this research. Superhydrophobicity results from the combination of a hydrophobic coating applied to a surface with microrib structures, resulting in a very low surface energy, such that the fluid does not penetrate in between the structures. The micro-rib structures are aligned in the streamwise flow direction. The riblets are larger than the micro-rib structure by an order of magnitude and protrude into the flow. All the test surfaces were produced on silicon wafers using photolithographic techniques. Pressure in the channel is maintained below the Laplace pressure for all testing, creating sustainable air pockets between the microribs. Velocity profiles, turbulent statistics, shear stress profiles, and friction factors are presented. Measurements were acquired for Reynolds numbers ranging from 4.5x10^3 to 2.0x10^4. Modest drag reductions were observed for the riblet surfaces. Substantial drag increase occurred over the superhydrophobic surfaces. The hybrid surfaces showed the greatest drag reduction. Turbulence production was strongly reduced during riblet and hybrid tests.
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Chan, Chi Kit. "Wikipedia recent changes information visualization." Thesis, University of Macau, 2015. http://umaclib3.umac.mo/record=b3335700.

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Cortina, Díaz Marta. "Flow boiling heat transfer and visualization in narrow channels /." Düsseldorf : VDI-Verl, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=017035574&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Cortina, Diaz Marta. "Flow boiling heat transfer and visualization in narrow channels." Düsseldorf VDI-Verl, 2007. http://d-nb.info/99200179X/04.

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Books on the topic "Channel visualization"

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Shindo, S. Some flow properties of telescope enclosures estimated from water channel tests: application of the flow visualization techniques. Tokyo: National Aerospace Laboratory, 1992.

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Suarez, Carlos M. Heat transfer studies and flow visualization of a rectangular channel with an offset-plate-fin array. Monterey, Calif: Naval Postgraduate School, 1996.

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Longest, Jerry Mark. Flow visualization studies in (1) a curved rectangular channel with 40 to 1 aspect ratio and (2) a straight channel with imposed bulk flow unsteadiness. Monterey, Calif: Naval Postgraduate School, 1989.

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United States. National Aeronautics and Space Administration. Scientific and Technical Information Program. and U.S. Army Research Laboratory., eds. A study of Dean vortex development and structure in a curved rectangular channel with aspect ratio of 40 at Dean numbers up to 430. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1994.

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Kline, Stephen. The physics of turbulence in the boundary layer: Final report ... NASA grant NAG-1-1610. [Washington, DC: National Aeronautics and Space Administration, 1996.

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E, Giuliani James, and United States. National Aeronautics and Space Administration., eds. Visualization of secondary flow development in high aspect ratio channels with curvature. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Life choices and life changes through imagework: The art of developing personal vision. London: Aquarian, 1992.

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Life choices and life changes through imagework: The art of developing personal work. London: Unwin Paperbacks, 1989.

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Mediating climate change. Burlington, VT: Ashgate, 2011.

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Glouberman, Dina. Life choices and life changes through imagework: The art of developing personal vision. London: Unwin Paperbacks, 1989.

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Book chapters on the topic "Channel visualization"

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Goto, S., and H. Kato. "Numerical Simulation of Viscoelastic Fluid in Two Dimensional Channel Junctions." In Flow Visualization VI, 97–101. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_13.

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Nishimura, T., and Y. Kawamura. "Steady and Oscillatory Flows in a Furrowed Channel with Arc-Shaped Walls." In Flow Visualization VI, 107–11. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_15.

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Quirion, Rémi, Dalia M. Araujo, Than Vinh Dam, Michel Dalpé, and Jean-Guy Chabot. "Visualization of Neurokinin, Growth Factor, Ion Channel and Second Messenger Binding Sites in the Brain: Clues to their Function." In Visualization of Brain Functions, 73–85. London: Palgrave Macmillan UK, 1989. http://dx.doi.org/10.1007/978-1-349-10726-1_8.

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Masure, Loïc, Cécile Dumas, and Emmanuel Prouff. "Gradient Visualization for General Characterization in Profiling Attacks." In Constructive Side-Channel Analysis and Secure Design, 145–67. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16350-1_9.

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Sai Sarath, K., K. Dhananjayakumar, N. Sivateja, and N. SaiBabu. "Experimental Studies Involving Flow Visualization Over Skewed Steps and Aerospikes Using Water Channel." In Lecture Notes on Multidisciplinary Industrial Engineering, 149–55. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9213-9_15.

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Wells, J. C., Y. Yamamoto, Y. Yamane, S. Egashira, and H. Nakagawa. "Dye Visualization and P.I.V. in the Cross-Stream Plane of a Turbulent Channel Flow." In IUTAM Symposium on Geometry and Statistics of Turbulence, 357–64. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9638-1_47.

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Takanashi, Y., K. Iwamoto, K. Yoshikawa, M. Makino, T. Tomita, S. Tomita, S. Kajihara, et al. "Visualization of Tonotopy of Auditory Cortex Using a Newly Developed 129 Channel Vector Magnetoencephalography." In Biomag 96, 877–80. New York, NY: Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1260-7_216.

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Peng, Q., F. J. Vermolen, and D. Weihs. "Predicting the Efficacy of Stalk Cells Following Leading Cells Through a Micro-Channel Using Morphoelasticity and a Cell Shape Evolution Model." In Computer Methods, Imaging and Visualization in Biomechanics and Biomedical Engineering II, 112–22. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10015-4_10.

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Chen, Min, Klaus Mueller, and Anders Ynnerman. "Fusion of Visual Channels." In Mathematics and Visualization, 119–27. London: Springer London, 2014. http://dx.doi.org/10.1007/978-1-4471-6497-5_12.

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Kottke, V., G. Gaiser, and P. Gschwind. "Taylor-Goertler Instability in Sinusoidal Wavy Channels." In Flow Visualization VI, 540–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_95.

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Conference papers on the topic "Channel visualization"

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Dillon, Heather, Gary Maupin, Shelley Carlson, Nat Saenz, and Tom Gallant. "Visualization Techniques for Single Channel DPF Systems." In SAE World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-01-1126.

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Polys, Nicholas F., and Abhijit A. Gurjarpadhye. "Tradeoffs in multi-channel microscopy volume visualization." In Web3D '16: The 21st International Conference on Web3D Technology. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2945292.2945323.

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Chen, Xi, and Melanie M. Derby. "Visualization of Steam Flow Condensation in Hydrophobic and Hydrophilic Mini-Gaps." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51150.

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An experimental, flow visualization study was conducted for flow condensation in 1-mm diameter mini-gaps with a visualization window. The hydrophilic channel was composed of bare copper, while the hydrophobic channel was coated with Teflon AF™. An open loop steam experimental apparatus was constructed, and single-phase validation tests are presented. For flow condensation in the hydrophilic gap, filmwise condensation was observed for all cases with a mass flux range of 30–100 kg/m2s. In contrast, the hydrophobic channel promoted dropwise condensation at mass fluxes of 30 and 50 kg/m2s. Cycles of droplet nucleation, growth and coalescence, and sweeping were identified at both mass fluxes in the hydrophobic channel at steady state. Droplets departed at a smaller sizes and more frequently at the higher mass flux, demonstrating the effects of shear forces on droplet sweeping. Based on flow visualizations, three droplet sweeping methods were identified: interfacial shear stress, upstream droplets, and absorbing into rivulets.
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Klos, Marcin, and Waldemar T. Smolik. "Single channel electrical capacitance tomograph for dynamic process visualization." In 2011 IEEE International Conference on Imaging Systems and Techniques (IST). IEEE, 2011. http://dx.doi.org/10.1109/ist.2011.5962209.

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Yu, Yongjian, and Jue Wang. "Fluorescence Image Visualization using Multi-Channel Minimax Optimization (MCMO)." In 2023 IEEE 36th International Symposium on Computer-Based Medical Systems (CBMS). IEEE, 2023. http://dx.doi.org/10.1109/cbms58004.2023.00205.

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Noh, Sang W., Jae S. Yoo, and Kune Y. Suh. "Visualization of Boiling in Inclined Rectangular Narrow Long Channels." In ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2006. http://dx.doi.org/10.1115/icnmm2006-96059.

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During the Three-Mile Island Unit 2 (TMI-2) accident, the lower part of the reactor pressure vessel had been overheated and then rather rapidly cooled down, as it was later found out in a vessel investigation project. These findings triggered a great deal of investigations to determine the critical heat flux (CHF) in narrow channels. Experiments were conducted to determine the CHF on a long downward heated rectangular narrow channel by changing the orientation of a copper crevice (5×105 mm2) type heater assembly. The test heater was placed in a demineralized, saturated water pool at atmospheric pressure. This work aims also to investigate the general boiling phenomena and the triggering mechanism for the CHF in the narrow channel through visualization of the bubble behavior in the vicinity of CHF. The test parameters include the channel size of 5 mm and the surface orientation angles from the downward facing position (180°) to the vertical position (90°). It was found that the CHF decreases as the surface inclination angle increases and as the gap size decreases. It was also shown that there exists a transition angle at which the CHF changes with a rapid slope, and that the inclination angle affects the bubble layer and the bubble discharge from the narrow gap.
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Squires, Christopher C., Geoff W. K. Colman, and Tricia J. Willink. "Air-to-Ground MIMO Channel Measurements." In Visualization, Imaging and Image Processing / 783: Modelling and Simulation / 784: Wireless Communications. Calgary,AB,Canada: ACTAPRESS, 2012. http://dx.doi.org/10.2316/p.2012.784-016.

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"VELOCITY VECTOR FIELD VISUALIZATION OF FLOW IN LIQUID ACQUISITION DEVICE CHANNEL." In International Conference on Information Visualization Theory and Applications. SciTePress - Science and and Technology Publications, 2012. http://dx.doi.org/10.5220/0003909807430748.

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Elkassimi, Said, Said Safi, and Bouzid Manaut. "Blind Radio Mobile Channel Estimation and Identification." In 2017 14th International Conference on Computer Graphics, Imaging and Visualization (CGiV). IEEE, 2017. http://dx.doi.org/10.1109/cgiv.2017.23.

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Bém, Jindřich, Daniel Duda, Jiří Kovařík, Vitalii Yanovych, and Václav Uruba. "Visualization of secondary flow in a corner of a channel." In 18TH CONFERENCE OF POWER SYSTEM ENGINEERING, THERMODYNAMICS AND FLUID MECHANICS. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5138615.

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Reports on the topic "Channel visualization"

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Kasza, K. E., and M. W. Wambsganss. Flow visualization of microscale thermal mechanics of boiling in small channels. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/211311.

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Kuznetsov, Victor, Vladislav Litvinenko, Egor Bykov, and Vadim Lukin. A program for determining the area of the object entering the IR sensor grid, as well as determining the dynamic characteristics. Science and Innovation Center Publishing House, April 2021. http://dx.doi.org/10.12731/bykov.0415.15042021.

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Currently, to evaluate the dynamic characteristics of objects, quite a large number of devices are used in the form of chronographs, which consist of various optical, thermal and laser sensors. Among the problems of these devices, the following can be distinguished: the lack of recording of the received data; the inaccessibility of taking into account the trajectory of the object flying in the sensor area, as well as taking into consideration the trajectory of the object during the approach to the device frame. The signal received from the infrared sensors is recorded in a separate document in txt format, in the form of a table. When you turn to the document, data is read from the current position of the input data stream in the specified list by an argument in accordance with the given condition. As a result of reading the data, it forms an array that includes N number of columns. The array is constructed in a such way that the first column includes time values, and columns 2...N- the value of voltage . The algorithm uses cycles that perform the function of deleting array rows where there is a fact of exceeding the threshold value in more than two columns, as well as rows where the threshold level was not exceeded. The modified array is converted into two new arrays, each of which includes data from different sensor frames. An array with the coordinates of the centers of the sensor operation zones was created to apply the Pythagorean theorem in three-dimensional space, which is necessary for calculating the exact distance between the zones. The time is determined by the difference in the response of the first and second sensor frames. Knowing the path and time, we are able to calculate the exact speed of the object. For visualization, the oscillograms of each sensor channel were displayed, and a chronograph model was created. The chronograph model highlights in purple the area where the threshold has been exceeded.
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Gustafson, Eric J., Melissa Lucash, Johannes Liem, Helen Jenny, Rob Scheller, Kelly Barrett, and Brian R. Sturtevant. Seeing the future impacts of climate change and forest management: a landscape visualization system for forest managers. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station, 2016. http://dx.doi.org/10.2737/nrs-gtr-164.

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Gustafson, Eric J., Melissa Lucash, Johannes Liem, Helen Jenny, Rob Scheller, Kelly Barrett, and Brian R. Sturtevant. Seeing the future impacts of climate change and forest management: a landscape visualization system for forest managers. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station, 2016. http://dx.doi.org/10.2737/nrs-gtr-164.

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Morkun, Vladimir S., Natalia V. Morkun, and Andrey V. Pikilnyak. Augmented reality as a tool for visualization of ultrasound propagation in heterogeneous media based on the k-space method. [б. в.], February 2020. http://dx.doi.org/10.31812/123456789/3757.

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For programming the AR tools, interactive objects and creating the markers, the method of fiber spaces (k-space) for modeling of ultrasonic wave propagation in an inhomogeneous medium using coarse grids, with maintaining the required accuracy was used. The algorithm and tools of augmented reality were introduced into the adaptive control system of the pulp gas phase in the iron ore flotation process using a control action on the basis of high-energy ultrasound dynamic effects generated by ultrasonic phased arrays. The tools of augmented reality based on k-space methods allow to facilitate wider adoption of ultrasound technology and visualize the ultra-sound propagation in heterogeneous media by providing a specific correspondence between the ultrasound data acquired in real- time and a sufficiently detailed augmented 3D scene. The tools of augmented reality allow seeing the field of ultrasound propagation, its characteristics, as well as the effect of the dynamic effects of ultrasound on the change in the gas phase during the flotation process.
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Galili, Naftali, Roger P. Rohrbach, Itzhak Shmulevich, Yoram Fuchs, and Giora Zauberman. Non-Destructive Quality Sensing of High-Value Agricultural Commodities Through Response Analysis. United States Department of Agriculture, October 1994. http://dx.doi.org/10.32747/1994.7570549.bard.

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The objectives of this project were to develop nondestructive methods for detection of internal properties and firmness of fruits and vegetables. One method was based on a soft piezoelectric film transducer developed in the Technion, for analysis of fruit response to low-energy excitation. The second method was a dot-matrix piezoelectric transducer of North Carolina State University, developed for contact-pressure analysis of fruit during impact. Two research teams, one in Israel and the other in North Carolina, coordinated their research effort according to the specific objectives of the project, to develop and apply the two complementary methods for quality control of agricultural commodities. In Israel: An improved firmness testing system was developed and tested with tropical fruits. The new system included an instrumented fruit-bed of three flexible piezoelectric sensors and miniature electromagnetic hammers, which served as fruit support and low-energy excitation device, respectively. Resonant frequencies were detected for determination of firmness index. Two new acoustic parameters were developed for evaluation of fruit firmness and maturity: a dumping-ratio and a centeroid of the frequency response. Experiments were performed with avocado and mango fruits. The internal damping ratio, which may indicate fruit ripeness, increased monotonically with time, while resonant frequencies and firmness indices decreased with time. Fruit samples were tested daily by destructive penetration test. A fairy high correlation was found in tropical fruits between the penetration force and the new acoustic parameters; a lower correlation was found between this parameter and the conventional firmness index. Improved table-top firmness testing units, Firmalon, with data-logging system and on-line data analysis capacity have been built. The new device was used for the full-scale experiments in the next two years, ahead of the original program and BARD timetable. Close cooperation was initiated with local industry for development of both off-line and on-line sorting and quality control of more agricultural commodities. Firmalon units were produced and operated in major packaging houses in Israel, Belgium and Washington State, on mango and avocado, apples, pears, tomatoes, melons and some other fruits, to gain field experience with the new method. The accumulated experimental data from all these activities is still analyzed, to improve firmness sorting criteria and shelf-life predicting curves for the different fruits. The test program in commercial CA storage facilities in Washington State included seven apple varieties: Fuji, Braeburn, Gala, Granny Smith, Jonagold, Red Delicious, Golden Delicious, and D'Anjou pear variety. FI master-curves could be developed for the Braeburn, Gala, Granny Smith and Jonagold apples. These fruits showed a steady ripening process during the test period. Yet, more work should be conducted to reduce scattering of the data and to determine the confidence limits of the method. Nearly constant FI in Red Delicious and the fluctuations of FI in the Fuji apples should be re-examined. Three sets of experiment were performed with Flandria tomatoes. Despite the complex structure of the tomatoes, the acoustic method could be used for firmness evaluation and to follow the ripening evolution with time. Close agreement was achieved between the auction expert evaluation and that of the nondestructive acoustic test, where firmness index of 4.0 and more indicated grade-A tomatoes. More work is performed to refine the sorting algorithm and to develop a general ripening scale for automatic grading of tomatoes for the fresh fruit market. Galia melons were tested in Israel, in simulated export conditions. It was concluded that the Firmalon is capable of detecting the ripening of melons nondestructively, and sorted out the defective fruits from the export shipment. The cooperation with local industry resulted in development of automatic on-line prototype of the acoustic sensor, that may be incorporated with the export quality control system for melons. More interesting is the development of the remote firmness sensing method for sealed CA cool-rooms, where most of the full-year fruit yield in stored for off-season consumption. Hundreds of ripening monitor systems have been installed in major fruit storage facilities, and being evaluated now by the consumers. If successful, the new method may cause a major change in long-term fruit storage technology. More uses of the acoustic test method have been considered, for monitoring fruit maturity and harvest time, testing fruit samples or each individual fruit when entering the storage facilities, packaging house and auction, and in the supermarket. This approach may result in a full line of equipment for nondestructive quality control of fruits and vegetables, from the orchard or the greenhouse, through the entire sorting, grading and storage process, up to the consumer table. The developed technology offers a tool to determine the maturity of the fruits nondestructively by monitoring their acoustic response to mechanical impulse on the tree. A special device was built and preliminary tested in mango fruit. More development is needed to develop a portable, hand operated sensing method for this purpose. In North Carolina: Analysis method based on an Auto-Regressive (AR) model was developed for detecting the first resonance of fruit from their response to mechanical impulse. The algorithm included a routine that detects the first resonant frequency from as many sensors as possible. Experiments on Red Delicious apples were performed and their firmness was determined. The AR method allowed the detection of the first resonance. The method could be fast enough to be utilized in a real time sorting machine. Yet, further study is needed to look for improvement of the search algorithm of the methods. An impact contact-pressure measurement system and Neural Network (NN) identification method were developed to investigate the relationships between surface pressure distributions on selected fruits and their respective internal textural qualities. A piezoelectric dot-matrix pressure transducer was developed for the purpose of acquiring time-sampled pressure profiles during impact. The acquired data was transferred into a personal computer and accurate visualization of animated data were presented. Preliminary test with 10 apples has been performed. Measurement were made by the contact-pressure transducer in two different positions. Complementary measurements were made on the same apples by using the Firmalon and Magness Taylor (MT) testers. Three-layer neural network was designed. 2/3 of the contact-pressure data were used as training input data and corresponding MT data as training target data. The remaining data were used as NN checking data. Six samples randomly chosen from the ten measured samples and their corresponding Firmalon values were used as the NN training and target data, respectively. The remaining four samples' data were input to the NN. The NN results consistent with the Firmness Tester values. So, if more training data would be obtained, the output should be more accurate. In addition, the Firmness Tester values do not consistent with MT firmness tester values. The NN method developed in this study appears to be a useful tool to emulate the MT Firmness test results without destroying the apple samples. To get more accurate estimation of MT firmness a much larger training data set is required. When the larger sensitive area of the pressure sensor being developed in this project becomes available, the entire contact 'shape' will provide additional information and the neural network results would be more accurate. It has been shown that the impact information can be utilized in the determination of internal quality factors of fruit. Until now,
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