Relevant bibliographies by topics / Directional probes

Academic literature on the topic 'Directional probes'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Directional probes"

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CULL, J. P., and R. COBCROFT. "OMNI-DIRECTIONAL DOWNHOLE EM PROBES*." Geophysical Prospecting 34, no. 4 (June 1986): 569–79. http://dx.doi.org/10.1111/j.1365-2478.1986.tb00482.x.

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Shaw-Ward, Samantha, Stephen C. McParlin, Paul Nathan, and David M. Birch. "Optimal Calibration of Directional Velocity Probes." AIAA Journal 56, no. 7 (July 2018): 2594–603. http://dx.doi.org/10.2514/1.j056762.

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Samet, M., and S. Einav. "Directional sensitivity of unplated normal‐wire probes." Review of Scientific Instruments 56, no. 12 (December 1985): 2299–305. http://dx.doi.org/10.1063/1.1138369.

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Samet, M., and S. Einav. "Directional sensitivity of unplated slanted‐wire probes." Review of Scientific Instruments 58, no. 5 (May 1987): 835–43. http://dx.doi.org/10.1063/1.1139641.

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Sobolík, V., and O. Wein. "Directional characteristics of electrodiffusion anemometric triple-split probes." International Journal of Heat and Mass Transfer 34, no. 8 (August 1991): 1929–33. http://dx.doi.org/10.1016/0017-9310(91)90204-r.

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Lepicovsky, Jan. "On Directional Sensitivity of Thermo-Anemometer Split-Fiber Probes." E3S Web of Conferences 345 (2022): 01010. http://dx.doi.org/10.1051/e3sconf/202234501010.

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Hot-wire thermo-anemometer probes are extremely fragile and they are used mostly in clean flows with neither debris nor small particles to prevent sensor destruction. Consequently, application of hot-wire probes is limited mostly to clean laboratory environments, their employment in semi-industrial research is extremely rare, and not always successful. Film probes with deposited thin metallic sensors on cylindrical fibers are more rugged and can be successfully employed for research tasks in semi-industrial environment. Surprisingly the potentials of these probes are not yet fully utilized. Detailed investigation of direction characteristics of a split-fiber probe was carried out during the course of this work. Several interesting outcomes resulted from this study. First, it has been shown that the split-fiber probe direction sensitivity rises with the increasing velocity contrary to the decrease of the velocity sensitivity, which is a common hindrance to application of single-sensor thermo-probes to high-speed and transonic flows. Second, the analysis of the acquired data revealed a sudden shift in the effective zero angle offset. It can be speculated that such a shift can related to the transition of the laminar vortex street into the turbulent one. However, the observed shift occurred at Reynolds number values between 900 and 1000, which is markedly higher than the usually reported transitional Reynolds number range between 150 and 300. Finally, the resilience of split-fiber probes to impairment by in-flow debris has been demonstrated proving the probe ability for effective use of these probes in semi-industrial or even industrial research tasks.
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Bucaro, Joseph, Nicholas Lagakos, Brian Houston, Saikat Dey, and Maxim Zalalutdinov. "Compact directional acoustic sensing using multi-fiber optical probes." Journal of the Acoustical Society of America 130, no. 4 (October 2011): 2393. http://dx.doi.org/10.1121/1.3654593.

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Husain, Ali, Asaithampi Ganesan, Miloslav Machacek, Lukas Cerveny, Pavel Kubat, Basma Ghazal, Petr Zimcik, and Saad Makhseed. "Dually directional glycosylated phthalocyanines as extracellular red-emitting fluorescent probes." Dalton Transactions 49, no. 28 (2020): 9605–17. http://dx.doi.org/10.1039/d0dt01180k.

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Control of the spatial orientation of glycosylated peripheral substituents in phthalocyanines provides monomeric species that are highly fluorescent in water. Due to their hydrophilic nature, they are suitable as extracellular fluorescent probes.
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Chew, Y. T., and S. M. Ha. "The directional sensitivities of crossed and triple hot-wire probes." Journal of Physics E: Scientific Instruments 21, no. 6 (June 1988): 613–20. http://dx.doi.org/10.1088/0022-3735/21/6/021.

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Guidi, Stefano, and Stephen E. Palmer. "The Internal Structure of a Rectangular Frame: Position, Orientation, and Direction." Art & Perception 3, no. 1 (2015): 19–52. http://dx.doi.org/10.1163/22134913-00002013.

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Previous research has shown that the structure of a rectangular frame strongly influences perceived goodness-of-fit for a small circular probe positioned within it (Palmer and Guidi, 2011). The center is consistently rated as the best position, followed by positions along the global vertical, global horizontal, and local diagonal symmetry axes. Here we report how goodness-of-fit within a surrounding frame is influenced by the relation between with the orientational and directional structure of the probe and that of the frame. In Experiment 1, fit ratings of short line segments and small ovals (each with two symmetry axes) at 35 positions and four orientations within the frame revealed strong orientational effects, especially when the probe’s and frame’s axes of symmetry were aligned. Experiment 2 extended the paradigm using triangular probes (with a single symmetry axis) at 15 positions and eight pointing directions. The results showed high fit ratings when the probe was aligned with global and local symmetry axes of the frame, and directional increments when the probes pointed upward, rightward, and into the frame. Experiment 3 confirmed the upward, rightward, and inward directional effects of Experiment 2 using a more sensitive Two-Alternative Forced Choice (2AFC) task. Experiment 4 showed that orientational effects were more strongly driven by alignment with the rectangle’s sides than with gravitational or retinal reference frames, especially when the probe was near the sides and vertices of the frame. The relevance of these findings to the empirical study of aesthetic response to images within rectangular frames is discussed.
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Dissertations / Theses on the topic "Directional probes"

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Gelaye, Ababu A. "UPSCALING OF A THERMAL EVOLUTION EXPERIMENT ON SHREDDED-TIRE MONOFILLS." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1512762530668535.

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O'Gorman, William Thomas. "Development of a directional flow probe for the hypersonic regime." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29370.pdf.

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Jackson, Laura Elizabeth. "The Directional p-Median Problem with Applications to Traffic Quantization and Multiprocessor Scheduling." NCSU, 2003. http://www.lib.ncsu.edu/theses/available/etd-11052003-111956/.

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An instance of a p-median problem gives n demand points. The objective is to locate p supply points in order to minimize the total distance of the demand points to their nearest supply point. P-median is polynomially solvable in one dimension but NP-hard in two or more dimensions, when either the Euclidean or the rectilinear distance measure is used. In this thesis, we treat the p-median problem under a new distance measure, the directional rectilinear distance, which requires the nearest supply point for a given demand point to lie above and to the right of it. This restriction has applications to multiprocessor scheduling of periodic tasks as well as to traffic quantization and Quality of Service scheduling in packet-switched computer networks. We show that the directional p-median problem is polynomially solvable in one dimension and give two algorithms. We prove the problem NP-hard in two or more dimensions and then present an efficient heuristic to solve it. Compared to the robust Teitz and Bart heuristic for p-median, our heuristic enjoys substantial speedup while sacrificing little in terms of solution quality, making it an ideal choice for our target applications with thousands of demand points.
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Jonsson, B. Lars G. "Directional Decomposition in Anisotropic Heterogeneous Media for Acoustic and Electromagnetic Fields." Doctoral thesis, Stockholm : Tekniska högsk, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3099.

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Ahmad, Iftikhar [Verfasser], and Günter [Akademischer Betreuer] Schmidt. "Analysis of algorithms for online uni-directional conversion problems / Iftikhar Ahmad. Betreuer: Günter Schmidt." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2013. http://d-nb.info/1053679491/34.

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Kunemund, Rachel. "TEACHER-CHILD RELATIONSHIPS, INTERACTIONS, AND PROBLEM BEHAVIOR: A LONGITUDINAL ANALYSIS EXAMINING BI-DIRECTIONAL ASSOCIATIONS." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5979.

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A number of preschool children engage in consistent problem behaviors that place them at-risk for developing emotional and behavioral disorders. These problem behaviors have been associated with poorer short and long-term outcomes for young children. Teacher-child relationships (i.e. conflict and closeness) and positive interactions between teachers and children may be reciprocally associated with problem behavior (e.g. teacher-child closeness reducing problem behavior). The purpose of this study was to explore the longitudinal bi-directional relations between teacher-child relationships, teacher-child interactions, and problem behavior over a single school year. Using a cross-lagged panel model, data from a larger randomized control trial of the BEST in CLASS program, was examined across three time points, and differences based on intervention participation were examined. Results indicated that there were far fewer paths in the business as usual group compared to the BEST in CLASS group. As expected, in the comparison group, problem behavior at Time 1 predicted lower levels of closeness at Time 2, however, this relation was not significant in the BEST in CLASS group. In the BEST in CLASS model problem behavior at Time 1 negatively predicted Time 2 positive interactions and there was a cross-lagged association with problem behavior at Time 1 predicting higher levels of conflict at Time, which in turn predicted higher levels of problem behavior at Time 3. Additional findings, limitations and implications for intervention work, practice, and policy are discussed.
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Al-Wali, Azzam Ahmad. "Explicit alternating direction methods for problems in fluid dynamics." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/6840.

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Recently an iterative method was formulated employing a new splitting strategy for the solution of tridiagonal systems of difference equations. The method was successful in solving the systems of equations arising from one dimensional initial boundary value problems, and a theoretical analysis for proving the convergence of the method for systems whose constituent matrices are positive definite was presented by Evans and Sahimi [22]. The method was known as the Alternating Group Explicit (AGE) method and is referred to as AGE-1D. The explicit nature of the method meant that its implementation on parallel machines can be very promising. The method was also extended to solve systems arising from two and three dimensional initial-boundary value problems, but the AGE-2D and AGE-3D algorithms proved to be too demanding in computational cost which largely reduces the advantages of its parallel nature. In this thesis, further theoretical analyses and experimental studies are pursued to establish the convergence and suitability of the AGE-1D method to a wider class of systems arising from univariate and multivariate differential equations with symmetric and non symmetric difference operators. Also the possibility of a Chebyshev acceleration of the AGE-1D algorithm is considered. For two and three dimensional problems it is proposed to couple the use of the AGE-1D algorithm with an ADI scheme or an ADI iterative method in what is called the Explicit Alternating Direction (EAD) method. It is then shown through experimental results that the EAD method retains the parallel features of the AGE method and moreover leads to savings of up to 83 % in the computational cost for solving some of the model problems. The thesis also includes applications of the AGE-1D algorithm and the EAD method to solve some problems of fluid dynamics such as the linearized Shallow Water equations, and the Navier Stokes' equations for the flow in an idealized one dimensional Planetary Boundary Layer. The thesis terminates with conclusions and suggestions for further work together with a comprehensive bibliography and an appendix containing some selected programs.
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Kemin, O. "The main problems and development directions of nontraditional banking services." Thesis, Ukrainian Academy of Banking of the National Bank of Ukraine, 2009. http://essuir.sumdu.edu.ua/handle/123456789/61282.

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Shao, Meiyu, A. O. Bieliatynskyi, and V. M. Pershаkov. "Existing problems and development direction of green airport in China." Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/52916.

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With the increasingly obvious constraints on resources and environment, while providing safety and high-quality services, Chinese civil airports strive to reduce the impact on the ecological environment. This article elaborates on the primary issues that need to be resolved in the process of China's green airport construction and explains the future development direction
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Mitradjieva-Daneva, Maria. "Feasible Direction Methods for Constrained Nonlinear Optimization : Suggestions for Improvements." Doctoral thesis, Linköping : Department of Mathematics, Linköping University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8811.

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Books on the topic "Directional probes"

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O'Gorman, William Thomas. Development of a directional flow probe for the hypersonic regime. [Toronto]: Dept. of Aerospace Science and Engineering, University of Toronto, 1997.

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O'Gorman, William Thomas. Development of a directional flow probe for the hypersonic regime. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1999.

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Chaos und Konzept: Proben und Probieren im Theater. Berlin: Alexander Verlag, 2011.

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Clarke, Sandra. Land law: Directions. 2nd ed. New York: Oxford University Press, 2010.

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Cooper, John. Directions 2: Reading stills. 2nd ed. Edinburgh: Oliver & Boyd, 1987.

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Sarah, Greer, ed. Land law: Directions. 2nd ed. New York: Oxford University Press, 2010.

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Clarke, Sandra. Land law: Directions. Oxford: Oxford University Press, 2008.

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National Conference on Behaviour Management and Behaviour Change of Children and Youth with Emotional and/or Behaviour Problems (6th 1994 Adelaide, S. Aust.). Widening horizons: New challenges, directions and achievements. Camberwell, Victoria: Australian Council for Educational Research, 1994.

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Daniel, Becky. Following directions brain boosters. Carthage, IL: Good Apple, 1992.

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1956-, Bourne Jane, and Norman Alison, eds. Science directions year 3. London: HarperCollins, 2002.

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Book chapters on the topic "Directional probes"

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Murday, J., R. Celotta, D. Y. Pui, and P. West. "Investigative Tools: Experimental Methods and Probes." In Nanotechnology Research Directions: IWGN Workshop Report, 45–70. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9576-6_3.

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Kumar, Akhil. "Future Directions." In Business Process Management, 258–66. First Edition. | New York: Routledge, 2018.: Routledge, 2018. http://dx.doi.org/10.4324/9781315646749-12.

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Schweitzer-Stenner, Reinhard. "Resonance Raman Dispersion Spectroscopy probes asymmetric distortions of porphyrins in solution and proteins." In Spectroscopy of Biological Molecules: New Directions, 95–98. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4479-7_43.

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Kurylev, Yaroslav, and Alexander Starkov. "Directional Moments in the Acoustic Inverse Problem." In Inverse Problems in Wave Propagation, 295–323. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1878-4_14.

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Fedirko, V. A., M. D. Eremtchenko, P. Collery, I. R. Nabiev, and A. I. Yanul. "Application of Scanning Probe Microscopy for DNA Topology Imaging." In Spectroscopy of Biological Molecules: New Directions, 241–42. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4479-7_104.

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Zscherp, Christian, Hüseyin Aygün, Christine Ernd, Joachim W. Engels, and Werner Mäntele. "Thermal unfolding of tendamistat probed by Fourier-transform infrared spectroscopy." In Spectroscopy of Biological Molecules: New Directions, 25–26. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4479-7_10.

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Kocheshev, Igor A., Vladyslava B. Kovalska, and Sergiy M. Yarmoluk. "Spectral properties of novel cyanine homodimere dyes as possible fluorescent probes for nucleic acids detection." In Spectroscopy of Biological Molecules: New Directions, 623–24. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4479-7_281.

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Essex, D. W., and Colm T. Whelan. "On the use of the (E,2E) Technique as a Surface Probe." In New Directions in Atomic Physics, 301–7. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4721-1_33.

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Stupňanová, Andrea. "Directional Properties of Semi-aggregation Functions." In Computational Intelligence and Mathematics for Tackling Complex Problems 4, 55–61. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07707-4_7.

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Ferentzy, Peter, and Nigel E. Turner. "Current Situation and Future Directions." In The History of Problem Gambling, 121–49. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6699-4_7.

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Conference papers on the topic "Directional probes"

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McParlin, Stephen, Samantha Ward, and David Birch. "Optimal calibration of directional velocity probes." In 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-45.

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Liu, Zhe, and Guillermo Paniagua. "Design of Directional Probes for High-Frequency Turbine Measurements." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64680.

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Aerodynamic probes are prevalent in turbomachinery research and gas turbine monitoring. Regrettably, this measurement technique experiences limitations in the transonic range as well as high frequency. Calibrated numerical tools offer an alternative procedure to design suitable instrumentation for each turbine application. In this paper, all the numerical analyses were performed using unsteady Reynolds Averaged Navier Stokes (URANS), two and three-dimensional. Firstly, two different probe geometries, oval and trapezoidal probe geometries were characterized at different incidence angles. In particular, the pressure recovery, angle sensitivity, induced vortex shedding unsteadiness at several yaw angles were evaluated. The studies were performed over a wide range of Mach numbers from subsonic to the transonic regime. The vortex shedding of the probe was also carefully analyzed. In a second evaluation, we selected the oval probe geometry including the line-cavity effects into the pressure tappings. The resonance frequency of line-cavity system was evaluated and compared with analytical calculations, as well as with the detailed analysis of Bergh and Tijdeman. The comparison of the pressure tapping readings with the actual input signal allowed the identification of the transfer functions, as well as the physical mechanisms that should be corrected during the measurements. Finally, 3D unsteady evaluations were implemented to compute the blockage effects, as well as the final frequency attenuation experienced by the piezo-resistive sensors.
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Fullerton, Anne, Brian Fullerton, and Thomas Fu. "A Directional Wave Array Using Ultrasonic Sensors." In SNAME 29th American Towing Tank Conference. SNAME, 2010. http://dx.doi.org/10.5957/attc-2010-008.

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A typical approach to determining wave direction is to assume that the sea surface is made up of several sinusoidal waves of various frequencies and directions. One method to determine wave direction as a function of frequency is to use an array of time-series point measurements of water elevation. These multi-element arrays can either be linear or polygonal, and utilize phase, time and path differences to determine wave direction. Typically, pressure gages or capacitance wave probes are used in a directional wave array, however, recently at the Naval Surface Warfare Center, Carderock Division, a directional wave array was employed using five ultrasonic level sensors in an array to quantify wave direction in the Maneuvering and Seakeeping basin (MASK). Two methods were then used to calculate wave direction, a phase/path/time difference method of Esteva which yields a mean direction for each frequency bin, and the Maximum Likelihood Method (MLM), which yields a directional spectrum for each frequency bin. Testing in the MASK was performed to assess the feasibility of using the array on a moving vessel to measure directional seas in the field. The sensors' sampling rate was set at 20 Hz and the five sensors were set up in "slave-master" mode, with the “master” driving the four “slaves” to sample concurrently. This method helped to reduce cross-talk between the sensors and their subsequent dropouts and spikes. Data was collected using LabView software with custom written real-time analysis in MATLAB. Wave direction was measured with regular and irregular waves, with unidirectional and bi-directional systems ninety degrees apart. Tests were performed with the array in a stationary position, as well as with forward motion and simulated pitch and roll motions to assess the potential of using the array on a moving vessel. Results with the stationary array from the basin are good, with the array correctly measuring regular waves of a single frequency from two directions, as well as irregular waves from two directions. Results from the system undergoing motions have increased variability.
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Souza, Felipe Lopes de, Eduardo Aoun Tannuri, Pedro Cardozo de Mello, Guilherme Franzini, Jordi Mas-Soler, and Alexandre Nicolaos Simos. "Bayesian Estimation of Directional Wave-Spectrum Using Vessel Movements and Wave-Probes: Proposal and Preliminary Experimental Validation." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61241.

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The measurement of the directional wave spectrum in oceans has been done by different approaches, mainly wave-buoys, satellite imagery and radar technologies; these methods, however, present some inherent drawbacks, e.g., difficult maintenance, low-resolution around areas of interest and high-cost. In order to overcome those problems, recent works in the area proposed a motion-based estimation procedure using the vessel, or the floating facility, as a wave sensor, what was called wave-buoy analogy. Despite of solving the issues, the solution is still incomplete, since it suffers from low estimation capabilities of the spectral energy below the cut-off period of the systems, around eight seconds, a frequency range that is responsible for the drift effects, that are critical for operation planning and dynamic positioning. This work studies the usage of wave-probes installed on the hull of a moored vessel to enhance the estimation capabilities of the motion-based strategy, using a high-order estimation method based on Bayesian statistics. The proposal is founded on the asymptotical response of the oceanic systems facing low period waves, which starts to behave like a wall, reflecting all the incoming energy, i.e., the worst the motion-based estimation is, the better the wave-elevation based estimation should be. Firstly, the measurements from the wave-probes are incorporated to the dynamic system of the vessel as new degrees-of-freedom, using a linear model extension, thus the Bayesian method can be expanded without additional reasoning. Secondly, the linear model hypothesis and the possible improvements are validated by experiments conducted in a wave-basin with a scale model of a moored FPSO-VLCC, concluding that the approach is able to improve not only the estimation of spectra with low peak period, but also the estimation in the entire range of expected spectra, mainly the significant height and the peak period properties. Lastly, some drawbacks are discussed, as the effect of the non-linear roll movement, which must be taken in account when calculating the wave-probe response; and the poor mean-direction estimation capability in some particular wave directions and low peak periods, in which even the vessel motions allied with the wave-probe response are not able to provide the proper direction discrimination.
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Singh, Abhishek, and Satish K. Sharma. "Wideband cylindrical dielectric resonator antenna fed-in using anti-probes providing directional patterns with low cross-polarization." In 2009 IEEE Antennas and Propagation Society International Symposium (APSURSI). IEEE, 2009. http://dx.doi.org/10.1109/aps.2009.5171982.

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Pirouzpanah, Sahand, and Gerald L. Morrison. "Temporal Gas Volume Fraction and Bubble Velocity Measurement Using an Impedance Needle Probe." In ASME 2013 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fedsm2013-16111.

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Impedance probes are used by the oil and gas industry to investigate multiphase flow behavior. In this study, an impedance needle probe has been developed to measure the local and temporal gas volume fraction in conductive and non-conductive process fluid. Measuring both resistance and capacitance enables this probe to be functional in both types of fluids and facilitates the measurement of local bubble velocity. Two 1/32″ insulated brass (alloy 260) rods with bare tips protrude into the flow. The gap between the electrodes is designed to be 0.085″. The probe can measure directional bubble velocity by measuring duration of signal gradient from liquid to gas transition. For a known distance between electrodes and by the measured time, directional bubble velocity in the direction of the connecting line between electrodes can be measured. The ratio between the time interval when signal is non-zero to the total time represents the temporal gas volume fraction.
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Rajput, Pankaj, and Sunil Kumar. "Directional Noise Reduction via Asymmetric Downstream Fluidic Injection." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71258.

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The main aim of this investigation is to analyze directional noise reduction resulting from asymmetric high momentum fluidic injection downstream of a Mach 0.9 nozzle. Jet noise has been identified as one of the primary obstacles to increasing commercial aviation capacity. Microjets in cross flow are known to enhance turbulent mixing in the shear layer due to the induced stream-wise vortices. This enhanced mixing can be used for reorganizing the spatial distribution of acoustic energy. Targeted reduction in the downward-emitted turbulent mixing noise can be achieved by strategically injecting high momentum fluid downstream of the jet exhaust. Detailed Large Eddy Simulations were performed on a hybrid block structured-unstructured mesh to generate the flow field which was then used for near field and far field noise computation. Aeroacoustic analogy based formulation was used for computing far-field noise estimation. Benchmark cases were validated with preexisting experimental data sets. Mean flow measurements suggest shorter jet core lengths due to the enhanced mixing resulting from fluidic injection. The induced asymmetry due to the fluidic injection gives rise to an asymmetric acoustic field leading to targeted directional noise reduction in the far field as measured by pressure probes.
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Berrich, Emna, Fethi Aloui, and Jack Legrand. "Inverse Method Used for the Determination of the Wall Shear Stress in a Sliding Rheometer Using Sandwich Probes." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30760.

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The inverse method, based on a numerical sequential estimation, has been applied for the determination of the wall shear stress of a liquid single phase flow in a sliding rheometer using multi-segment probe. This method requires the inversion of the convection diffusion equation in order to apply it to instantaneous mass transfer measurements. Polarography technique, known as the limiting diffusion current method, has been used. This requires the use of Electro-Diffusion ED probe which allows the determination of the local mass transfer rate for known flow kinematics. In addition, two-segment platinum probe was mounted flush to the inert surface of the upper disk of the sliding rheometer. Hydrodynamic oscillations have been imposed to the torsional flow (type sinusoidal), in order to study the frequency response of the sandwich probe for a fixed polarization voltage. Possible error sources which are likely to affect the interpretation of the results e.g. the directional angle effect, the inertial effect, the diffusion effect and the frequencies of oscillations effect have been studied in order to test the robustness of the inverse method within the presence of such impacts. Furthermore, to demonstrate the possible effect of non-negligible inertia and diffusion, we refer to ED results for both modified Reynolds number defined by [1] and Peclet number ranges as well as for different directional angles. An algorithm has been developed for the numerically filtering of the mass transfer signals, and therefore the wall shear stress signals. It permits to eliminate any possible noise effect due to the imposed vibrations to the torsional flow. The analysis shown that the inverse method is in a good agreement with the ED experimental results for the different cases of study, i.e. for different dimensionless Reynolds numbers, for high and low oscillation frequencies, as well as for different directional angles. The little difference is probably caused by the sensitivity of the double probe to such directional angles or to the neglecting of the insulating gap effect on the inverse method solution as a first step of the study of the inverse method for double probes signals.
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Naaijen, P., R. R. T. van Dijk, R. H. M. Huijsmans, and A. A. El-Mouhandiz. "Real Time Estimation of Ship Motions in Short Crested Seas." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79366.

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The presented research is part of the development of an onboard wave and motion estimation system that aims to predict wave elevation and vessel motions some 60–120 s ahead, using wave elevation measurements by means of X-band radar. In order to validate the prediction model, scale experiments have been carried out in short crested waves for 3 different sea states with varying directional spreading, during which wave elevation and vessel motions were measured. To compare predicted and measured wave elevation, three wave probes were used at different distances from a large set of wave probes that was used as input to the model. At one of the prediction locations, also tests were performed to measure vessel motions. This setup allowed validation of a method that was used for initializing the linear wave prediction and ship motion prediction model. Various observations and conclusions are presented concerning optimal combinations of prediction model parameters, probe set-up and sea state.
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Peiffer, Antoine, Nathan Tom, Christian Cermelli, and Dominique Roddier. "Estimation of Onsite Wave Parameters From the WindFloat Platform." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10002.

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The WindFloat is a semi-submersible floating foundation supporting multi-megawatt wind turbines. A full-scale 2MW WindFloat demonstration unit was installed off the coast of Portugal in October 2011. Many instruments are installed on this prototype to measure the environmental conditions and the response of the platform at the site. The first section of the paper focuses on the validation of the wave measurements obtained from two radar-based wave probes onboard the platform. The wave elevation at the site is reconstructed and typical wave statistics are computed. The results are compared and validated with independent buoy measurements close to site. The second section of the paper presents estimates of prevailing wave direction and directional wave spectra based on platform motions. These results are also benchmarked with onsite buoy measurements.
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Reports on the topic "Directional probes"

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Salama, A. I. A. Canadian coal preparation process-control research and development directions. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/305064.

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Taylor, Richard N., Deborah A. Baker, Frank C. Belz, Barry W. Boehm, Lori A. Clarke, David A. Fischer, Leon Osterweil, Richard W. Selby, Jack C. Wileden, and Alexander L. Wolf. Next Generation Software Environments: Principles, Problems, and Research Directions. Fort Belvoir, VA: Defense Technical Information Center, July 1987. http://dx.doi.org/10.21236/ada462122.

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Odum, Richard F., L. Carrier, N. Babich, B. Hunt, R. LePoint, and J. Shedd. Program Management Process on F/A-18E/F--New Directions. Fort Belvoir, VA: Defense Technical Information Center, June 2002. http://dx.doi.org/10.21236/ada403906.

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Hough, P. D. Stable computation of search directions for near-degenerate linear programming problems. Office of Scientific and Technical Information (OSTI), March 1997. http://dx.doi.org/10.2172/477537.

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Mintii, Iryna S., and Vladimir N. Soloviev. Augmented Reality: Ukrainian Present Business and Future Education. [б. в.], November 2018. http://dx.doi.org/10.31812/123456789/2673.

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The aim of the study: analysis of the current state and prospects for the development of augmented reality in Ukraine in business and education. The objectives of the study: to analyze the experience of using the augmented reality in advertising, marketing, education of Ukraine; to investigate the problems existing in this direction. The object of the study: the process of using augmented reality in advertising, marketing, education. The subject of the study: specific projects using the augmented reality in advertising, marketing, education. The used method of study was theoretical that included analysis of articles and materials of conferences on the research problem. The results of the study: nowadays, the augmented reality is used primarily in the field of advertising and marketing of Ukraine. As an example is the advertisement of Kyivstar (virtual tour around Ukraine, augmented reality quest), some of the Ukrainian companies have certain results in in this direction, for example, Augmented Pixels, Simo AR (in the development of a browser with augmented reality, the Kontramarka ticket service is implemented), Live Animations (such projects as Wonderland AR, My Yeti, Live Coloring, Gapchinska, Live Photo are already implemented). Among the problems that exist with the introduction of these technologies in education, first of all, we should note the shortage of specialists in the preparation of such educational projects and the uncoordinated actions of business and education in this direction. Main conclusions and recommendations: in order to disseminate research results it is necessary to hold thematic events of the all-Ukrainian level.
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Slyman, George L., and Gilbert L. Goldman. Streamlining the Medical Materiel Acquisition Process: Central Direction, Better Requirements. Volume 1. Fort Belvoir, VA: Defense Technical Information Center, August 1990. http://dx.doi.org/10.21236/ada229077.

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WILLIAMS, CECELIA V., GRANT J. LOCKWOOD, RANDY A. NORMANN, and THOMAS LINDSAY. Characterization of Under-Building Contamination at Rocky Flats Implementing Environmental-Measurement While Drilling Process with Horizontal Directional Drilling. Office of Scientific and Technical Information (OSTI), June 2001. http://dx.doi.org/10.2172/782722.

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Henson, V. E. LDRD Final Report-New Directions for Algebraic Multigrid: Solutions for Large Scale Multiphysics Problems. Office of Scientific and Technical Information (OSTI), February 2003. http://dx.doi.org/10.2172/15003247.

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Bilous, Vladyslav V., Volodymyr V. Proshkin, and Oksana S. Lytvyn. Development of AR-applications as a promising area of research for students. [б. в.], November 2020. http://dx.doi.org/10.31812/123456789/4409.

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The article substantiates the importance of using augmented reality in the educational process, in particular, in the study of natural and mathematical disciplines. The essence of AR (augmented reality), characteristics of AR hardware and software, directions and advantages of using AR in the educational process are outlined. It has proven that AR is a unique tool that allows educators to teach the new digital generation in a readable, comprehensible, memorable and memorable format, which is the basis for developing a strong interest in learning. Presented the results of the international study on the quality of education PISA (Programme for International Student Assessment) which stimulated the development of the problem of using AR in mathematics teaching. Within the limits of realization of research work of students of the Borys Grinchenko Kyiv University the AR-application on mathematics is developed. To create it used tools: Android Studio, SDK, ARCore, QR Generator, Math pattern. A number of markers of mathematical objects have been developed that correspond to the school mathematics course (topic: “Polyhedra and Functions, their properties and graphs”). The developed AR tools were introduced into the process of teaching students of the specialty “Mathematics”. Prospects of research in development of a technique of training of separate mathematics themes with use of AR have been defined.
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Dr. Tarasankar DebRoy. Final Report: A Transport Phenomena Based Approach to Probe Evolution of Weld Macro and Microstructures and A Smart Bi-directional Model of Fusion Welding. Office of Scientific and Technical Information (OSTI), December 2009. http://dx.doi.org/10.2172/968964.

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