Academic literature on the topic 'Optimizing parameters'

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Journal articles on the topic "Optimizing parameters"

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Lysenko, L. L., and L. V. Gorodilov. "Optimizing publsed-machine parameters." Journal of Mining Science 33, no. 4 (July 1997): 356–62. http://dx.doi.org/10.1007/bf02765855.

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El-Fishawy, Nawal, Mohammad M. Zahra, and Mostafa El-gamala. "OPTIMIZING WIMAX MAC LAYER PARAMETERS." JES. Journal of Engineering Sciences 39, no. 6 (November 1, 2011): 1403–15. http://dx.doi.org/10.21608/jesaun.2011.129431.

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Ríos-Fachal, Matilde, Javier Tarrío-Saavedra, Jorge López-Beceiro, Salvador Naya, and Ramón Artiaga. "Optimizing fitting parameters in thermogravimetry." Journal of Thermal Analysis and Calorimetry 116, no. 3 (January 30, 2014): 1141–51. http://dx.doi.org/10.1007/s10973-013-3623-0.

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Tamvakis, Androniki, Vasilis Trygonis, John Miritzis, George Tsirtsis, and Sofie Spatharis. "Optimizing biodiversity prediction from abiotic parameters." Environmental Modelling & Software 53 (March 2014): 112–20. http://dx.doi.org/10.1016/j.envsoft.2013.12.001.

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Bemmerl, Thomas, and Thomas Bonk. "Optimizing cache parameters using CAE workstations." Microprocessing and Microprogramming 24, no. 1-5 (August 1988): 541–46. http://dx.doi.org/10.1016/0165-6074(88)90107-x.

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Huey, Gary, Susan Stair, and Robert Stern. "Hyaluronic Acid Determinations: Optimizing Assay Parameters." Matrix 10, no. 2 (May 1990): 67–74. http://dx.doi.org/10.1016/s0934-8832(11)80172-1.

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Lanciano, Rachelle. "Optimizing radiation parameters for cervical cancer." Seminars in Radiation Oncology 10, no. 1 (January 2000): 36–43. http://dx.doi.org/10.1016/s1053-4296(00)80019-3.

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Bitar, Nabil N., and Carol Y. Espy‐Wilson. "Optimizing acoustic parameters for phonetic features." Journal of the Acoustical Society of America 100, no. 4 (October 1996): 2756. http://dx.doi.org/10.1121/1.416323.

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Galiani, Silvia, Benjamin Harke, Giuseppe Vicidomini, Gabriele Lignani, Hanako Tsushima, Evelina Chieregatti, Fabio Benfenati, Paolo Bianchini, and Alberto Diaspro. "Optimizing Parameters for Wll STED Imaging." Biophysical Journal 102, no. 3 (January 2012): 725a. http://dx.doi.org/10.1016/j.bpj.2011.11.3932.

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Ristovska, Bojana, Elena Papazoska, and Valentina Gecevska. "IMPROVING MANUFACTURING PROCESS BY OPTIMIZING TIME PARAMETERS." Journal of Production Engineering 22, no. 1 (June 2019): 42–46. http://dx.doi.org/10.24867/jpe-2019-01-042.

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Dissertations / Theses on the topic "Optimizing parameters"

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Kumar, Ashwani. "Optimizing Parameters for High-quality Metagenomic Assembly." Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1437997082.

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Hoy, Thomas Lavelle. "Optimizing Solvent Blends for a Quinary System." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1462199621.

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Benslimane, Ziad. "Optimizing Hadoop Parameters Based on the Application Resource Consumption." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-200144.

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The interest in analyzing the growing amounts of data has encouraged the deployment of large scale parallel computing frameworks such as Hadoop. In other words, data analytic is the main reason behind the success of distributed systems; this is due tothe fact that data might not fit on a single disk, and that processing can be very time consuming which makes parallel input analysis very useful. Hadoop relies on the MapReduce programming paradigm to distribute work among the machines; so a good balance of load will eventually influence the execution time of those kinds of applications. This paper introduces a technique to optimize some configuration parameters using the application's CPU utilization in order to tune Hadoop; the theories stated and proved in this paper rely on the fact that the CPUs should neither be over utilized nor under utilized; in other words, the conclusion will be a sort of an equation of the parameter to be optimized in terms of the cluster infrastructure.The future research concerning this topic is planned to focus on tuning other Hadoop parameters and to use more accurate tools to analyze the cluster performance; moreover, it is also interesting to research any possible ways to optimize Hadoop parameters based on other consumption criteria such the input/output statistics and the network traffic.
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Shore, Patrick. "Swinging Babe's Bat: Optimizing Home Run Distance Using Ideal Parameters." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/cmc_theses/2226.

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Significant research has been conducted on the physics of ball and bat collisions in an effort to model and understand real-world conditions. This thesis expands upon previous research to determine the maximum distance a ball can travel under ideal circumstances. Bat mass, bat speed, pitch speed and pitch spin were controlled values. These values were selected based on the highest recorded MLB values for their respective category. Specifically these are: Babe Ruth’s largest bat, Giancarlo Stanton’s recorded swing speed and Aroldis Chapman’s fastest fastball. A model was developed for a planar collision between a bat and ball using conservation laws in order to achieve the maximum exit velocity of the ball during a head-on collision. However, this thesis is focused on home runs and long fly-balls that occur from oblique collisions rather than the line drives produced by head-on collisions. The planar collision model results were adjusted to oblique collisions based on data from previous experimental research. The ball and bat were assumed to be moving in opposite directions parallel to one another at the point of impact with the ball slightly elevated above the bat. The post-collision results for the launch angle, spin and final exit velocity of the ball were calculated as functions of the perpendicular distance from the centerline of the bat to the centerline of the ball. Trajectories of the ball were calculated using a flight model that measured the final distance of the ball based on lift and drag forces. The results indicate that the optimum pre-collision parameters described above will maximize the distance traveled by the ball well beyond the farthest recorded home run distance. Experimentally determined factors such as the drag coefficient and coefficient of restitution have a significant impact on the flight of the ball. Implications of the results are discussed.
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Udomkun, Patchimaporn [Verfasser]. "Increasing nutritional value of papaya (Carica papaya L.) by optimizing pretreatment and drying parameters / Patchimaporn Udomkun." Aachen : Shaker, 2015. http://d-nb.info/1075437016/34.

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Nguyen, Khang D. "Systematic approach to optimizing free parameters in the Goldstone-boson-exchange model of quark-quark interactions." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1566292.

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The set of parameters used in the Goldstone-boson-exchange (GBE) model of quark-quark interactions by a group from the University of Graz to calculate baryon energy spectra is not optimal. A systematic approach to optimize these free parameters for a greater collection of baryons than previously treated is presented here. The baryons considered possess a physical symmetry where their constituent quarks are either made of all identical quarks or just two identical quarks. In order to calculate the various energy states of these baryons, the Faddeev method is used under the premise that three-quark interactions are modeled by an infinitely rising confinement potential. The new parameters and resulting energy calculations obtained yield better agreement with experimental data than previously achieved. In addition to providing a stronger case for the GBE model, these newfound parameters have the potential to give further insight into how quarks interact and pave the way for more advanced work in the field of three-quark problems.

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Berquin, Yann. "Assessing the performances and optimizing the radar sounder design parameters for the EJSM mission (Ganymede and Europa)." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENU001/document.

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On se propose dans un premier temps d'étudier des jeux de données topographiques sur la lune glacée de Jupiter Ganymède et d'estimer l'impact de la topographie sur les performances du futur radar sondeur. Les principaux résultats sont présentés dans [1]. Une seconde partie est dédiée à l'expression mathématique du problème direct du sondage radar planétaire (physique et instrumentation). On rappelle ainsi comment dériver à partir des formulations de Stratton-Chu les formulations volumiques classiques et surfaciques (i.e. Huygens-Fresnel). On s'attache ensuite à détailler un algorithme performant basé sur la formulation surfacique pour simuler des échos radar à partir d'une surface planétaire maillée. Cette approche est largement inspirée par le travail de J.-F. Nouvel [2]. Une troisième partie s'intéresse à l'inversion des paramètres géophysiques de surface à partir des mesures radar. On écrit ainsi le problème dans un cadre probabiliste (c.f. [3]) et on présente trois grandes familles d'algorithmes : (i) une approche avec une linéarisation du problème, (ii) une approche itérative basée sur une méthode de gradient et (iii) une approche statistique pour estimer les densités de probabilités a posteriori. Ces algorithmes sont appliqués à des jeux de données synthétiques pour illustrer leurs performances. [1] Y. Berquin, W. Kofman, A. Herique, G. Alberti, and P. Beck. A study on ganymede's surface topography: Perspectives for radar sounding. Planetary and Space Science, (0), 2012. [2] J.-F. Nouvel, A. Herique, W. Kofman, and A. Safaeinili. Radar signal simulation: Surface modeling with the Facet Method. Radio Science, 39:RS1013, February 2004. [3] A. Tarantola. Inverse problem theory and methods for model parameter estimation. SIAM, 2005
The manuscript details the work performed in the course of my PhD on planetary sounding radar. The main goal of the study is to help designing and assessing the sounding radar performances. This instrument will be embarked on the ac{ESA}'s large class mission ac{JUICE} to probe Jupiter's environment and Jupiter's icy moons Callisto, Ganymede and Europa. As an introduction to the problem, a study on Ganymede's surface ac{DEM} and its implications with regard to the radar performances was performed. The results of this work put forward issues due to a hostile environment with important surface clutter which eventually lead to a decrease in the radar signal bandwidth to 8--10 MHz. A first section is then dedicated to the formulation of the direct problem of sounding radar with a focus on surface formulations. This section eventually leads to a novel algorithm for radar surface echo computation from meshed surfaces which proves to be both efficient and accurate. A second section studies the possibility to use surface formulation to recover geophysical surface parameters from sounding radar data. For that purpose, three main approaches are discussed namely (i) a linear approach, (ii) a gradient-based approach and (iii) a statistical approach. These techniques rely on a probabilistic view of the inverse problem at hand and yield good result with different setups. Although we mainly focus on surface reflectivity, we also discuss surface topography inversion. Finally, a last section discusses the work presented in the manuscript and provides perspectives for future work
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Santhosh, Sandhya. "Determination of surface finish and Metal Removal Rate by varying parameters in wirecut Electrical Discharge Machining and optimizing using genetic algorithm." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Wire Electric Discharge Machining (WEDM) is one of the greatest innovations in the tooling and machining industry. This process has brought dramatic improvements in accuracy, quality, productivity and earnings. Before wire EDM, costly processes were often used to produce finished parts. Now with the aid of computer and wire EDM machines, extremely complicated shapes can be cut automatically, precisely and economically even in materials as hard as carbide. The selection of optimum machining parameters in WEDM is an important step. Improperly selected parameters may result in serious problems like short-circuiting of wire, wire breakage and work surface damage which is imposing certain limits on the production schedule and also reducing productivity. The objective of the present work is to investigate the effects of the various Wire cut EDM process parameters on the surface quality, maximum material removal rates and obtain the optimal sets of process parameters so that the quality and MRR of machined parts can be optimized. Experiments will be conducted on the pieces by parameters. The material used for machining is Aluminium alloy. The process parameters considered are Pulse Time on, Pulse Time off, Input Power, Wire Feed, Servo Voltage and Wire Tension. The optimization will be done by using Genetic Algorithm. The above work is performed in English at WinWill Technical Services, located in Hyderabad, India, for a period of 4months.
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Chu, Joni, and Irving Harrison. "INCREASING MONITORING CAPACITY TO KEEP PACE WITH THE WIRELESS REVOLUTION." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/608276.

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International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California
With wireless communications becoming the rule rather than the exception, satellite operators need tools to effectively monitor increasingly large and complex satellite constellations. Visual data monitoring increases the monitoring capacity of satellite operators by several orders of magnitude, enabling them to track hundreds of thousands of parameters in real-time on a single screen. With this powerful new tool, operators can proactively address potential problems before they become customer complaints.
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Jamalabadi, Hamidreza [Verfasser], and Steffen [Akademischer Betreuer] Gais. "Optimizing parameters and algorithms of multivariate pattern classification for hypothesis testing in high-density EEG / Hamidreza Jamalabadi ; Betreuer: Steffen Gais." Tübingen : Universitätsbibliothek Tübingen, 2017. http://d-nb.info/119946936X/34.

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Books on the topic "Optimizing parameters"

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Optimizing blink parameters for highlighting an air traffic control situation display. Washington, D.C: U.S. Dept. of Transportation, Federal Aviation Administration, Office of Aviation Medicine, 1999.

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Power Integrity: Measuring, Optimizing, and Troubleshooting Power Related Parameters in Electronics Systems. McGraw-Hill Education, 2014.

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Patel, Mikin V., and Steven Zangan. Optimizing Carbon Dioxide Peripheral Arteriography. Edited by S. Lowell Kahn, Bulent Arslan, and Abdulrahman Masrani. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199986071.003.0103.

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Angiography relies on the use of contrast medium for visualization of the vessel. Iodinated contrast can be contraindicated in patients with renal impairment or iodinated contrast allergy, so carbon dioxide (CO2) gas can be a useful alternative. A number of technical and postural parameters can optimize CO2 angiography, and vasodilators can be used to improve imaging of peripheral vessels. Although CO2 has distinct advantages, the limitations of CO2 angiography must be well understood. Operators should be aware that CO2 angiography can lead to overestimation of vessel size and can lead to complications such as transient ischemia of tissues, alterations of blood chemistry, neurotoxicity, and “vapor lock.”
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Miguel, Eve, Florence Fournet, Serge Yerbanga, Nicolas Moiroux, Franck Yao, Timothée Vergne, Bernard Cazelles, Roch K. Dabiré, Frédéric Simard, and Benjamin Roche. Optimizing public health strategies in low-income countries: epidemiology, ecology and evolution for the control of malaria. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789833.003.0016.

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During the 20th century, health inequalities among countries have increased. Several factors explain this pattern, such as immunization and massive antibiotherapy, but nutrition, housing and hygiene are key parameters for health improvement. This heterogeneity among countries is well illustrated by malaria, although disappeared from many high-income countries, is still endemic and prevalent in low- and middle-income countries. We question these differences and detail the recommendations proposed by the World Health Organization to tackle malaria. We investigate the optimal combination of actions to deploy in resource-limited countries and the best spatio-temporal window to target. We propose a new framework for health program management based on evolutionary biology approaches to tailor global programs, to improve their local efficiency and avoid resistance. Thus, we explore all components of the ecological niche of the parasite (human, vector and environment) and consider the magnitude of actions to deploy to reach its local.
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Kipnis, Eric, and Benoit Vallet. Tissue perfusion monitoring in the ICU. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0138.

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Resuscitation endpoints have shifted away from restoring normal values of routinely assessed haemodynamic parameters (central venous pressure, mean arterial pressure, cardiac output) towards optimizing parameters that reflect adequate tissue perfusion. Tissue perfusion-based endpoints have changed outcomes, particularly in sepsis. Tissue perfusion can be explored by monitoring the end result of perfusion, namely tissue oxygenation, metabolic markers, and tissue blood flow. Tissue oxygenation can be directly monitored locally through invasive electrodes or non-invasively using light absorbance (pulse oximetry (SpO2) or tissue (StO2)). Global oxygenation may be monitored in blood, either intermittently through blood gas analysis, or continuously with specialized catheters. Central venous saturation (ScvO2) indirectly assesses tissue oxygenation as the net balance between global O2 delivery and uptake, decreasing when delivery does not meet demand. Lactate, a by-product of anaerobic glycolysis, increases when oxygenation is inadequate, and can be measured either globally in blood, or locally in tissues by microdialysis. Likewise, CO2 (a by-product of cellular respiration) and PCO2 can be measured globally in blood or locally in accessible mucosal tissues (sublingual, gastric) by capnography or tonometry. Increasing PCO2 gradients, either tissue-to-arterial or venous-to-arterial, are due to inadequate perfusion. Metabolically, the oxidoreductive status of mitochondria can be assessed locally through NADH fluorescence, which increases in situations of inadequate oxygenation/perfusion. Finally, local tissue blood flow may be measured by laser-Doppler or visualized through intravital microscopic imaging. These perfusion/oxygenation resuscitation endpoints are increasingly used and studied in critical care.
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1955-, Duffy S. F., Palko Joseph L, and United States. National Aeronautics and Space Administration., eds. Parameter estimation techniques based on optimizing goodness-of-fit statistics for structural reliability. [Easton, Pa.?]: American Society of Mechanical Engineers, 1993.

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Parameter Study for Optimizing the Mass of a Space Nuclear Power System Radiation Shield. Storming Media, 2002.

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Book chapters on the topic "Optimizing parameters"

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Pham, Trong-Ton, and Dennis Mintah Djan. "Deep Reinforcement Learning for Auto-optimization of I/O Accelerator Parameters." In Benchmarking, Measuring, and Optimizing, 187–203. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49556-5_19.

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Burchardt, Armin, Tim Laue, and Thomas Röfer. "Optimizing Particle Filter Parameters for Self-localization." In RoboCup 2010: Robot Soccer World Cup XIV, 145–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20217-9_13.

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Wang, Yan, Cheng-Lin Liu, and Zhi-Cheng Ji. "Energy-Efficient Process Parameters Optimizing Decision Method." In Quantitative Analysis and Optimal Control of Energy Efficiency in Discrete Manufacturing System, 241–54. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4462-0_10.

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Fernández-Ares, A., A. M. Mora, J. J. Merelo, P. García-Sánchez, and C. M. Fernandes. "Optimizing Strategy Parameters in a Game Bot." In Advances in Computational Intelligence, 325–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21498-1_41.

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Pal, Shilpa, Dipti Singh, and Varun Kumar. "Hybrid SOMA: A Tool for Optimizing TMD Parameters." In Advances in Intelligent Systems and Computing, 35–41. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3322-3_4.

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Buzdalov, Maxim, Sergey Kolyubin, Artem Egorov, and Ivan Borisov. "Optimizing Robotic Cheetah Leg Parameters Using Evolutionary Algorithms." In Lecture Notes in Computer Science, 214–27. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63710-1_17.

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Boughorbel, Sabri, Jean Philippe Tarel, and Nozha Boujemaa. "The LCCP for Optimizing Kernel Parameters for SVM." In Lecture Notes in Computer Science, 589–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11550907_93.

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Monirian, Masoud Amel, Hamideh Razavi, and Shabnam Mahmoudzadeh Vaziri. "Optimizing Reserve Combination with Uncertain Parameters (Case Study: Football)." In Proceedings of the Eleventh International Conference on Management Science and Engineering Management, 1417–27. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59280-0_119.

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Gray, Joseph, Taher Aljundi, and Aaron Turnbull. "Optimizing Compton Back Scattering Parameters Using a Simulation Code." In Review of Progress in Quantitative Nondestructive Evaluation, 369–76. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1987-4_43.

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Tharwat, Alaa, and Aboul Ella Hassanien. "Optimizing Support Vector Machine Parameters Using Bat Optimization Algorithm." In Machine Learning Paradigms: Theory and Application, 351–74. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02357-7_17.

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Conference papers on the topic "Optimizing parameters"

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Charles, Richard D. "Optimizing Extraction Parachute Operational Parameters." In 23rd AIAA Aerodynamic Decelerator Systems Technology Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-2102.

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Lavoie, Benjamin R., Michal Okoniewski, and Elise C. Fear. "Optimizing microwave-radar imaging parameters." In 2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM). IEEE, 2016. http://dx.doi.org/10.1109/antem.2016.7550177.

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Kilyeni, St, C. Barbulescu, A. Kilyeni, and M. Buriescu. "Optimizing intensive automatic voltage regulator parameters." In 2009 5th International Symposium on Applied Computational Intelligence and Informatics (SACI). IEEE, 2009. http://dx.doi.org/10.1109/saci.2009.5136259.

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Jing Jun Soon and Kay-Soon Low. "Optimizing photovoltaic model parameters for simulation." In 2012 IEEE 21st International Symposium on Industrial Electronics (ISIE). IEEE, 2012. http://dx.doi.org/10.1109/isie.2012.6237367.

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Zheng, Xinquan, Yuan Liu, Yongjie Huang, and Philippe Enkababian. "Optimizing Completion Parameters via a Synthetic Catalog." In Abu Dhabi International Petroleum Exhibition & Conference. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/197848-ms.

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Eissa, Walid Mohamed. "Optimizing Drilling Parameters Enhances Horizontal Drilling Performance." In SPE/IADC Middle East Drilling Technology Conference. Society of Petroleum Engineers, 2001. http://dx.doi.org/10.2118/72281-ms.

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Rugheimer, Christoph, Alexander Schmidt, Florian Particke, Thomas Mahr, Holger Appel, and Holger Deitersen. "Optimizing radar detection parameters using evolutionary algorithms." In 2015 16th International Radar Symposium (IRS). IEEE, 2015. http://dx.doi.org/10.1109/irs.2015.7226316.

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Surti, Suleman, Georges El-Fakhri, and Joel S. Karp. "Optimizing Acquisition Parameters in TOF PET Scanners." In 2006 IEEE Nuclear Science Symposium Conference Record. IEEE, 2006. http://dx.doi.org/10.1109/nssmic.2006.354386.

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Yan, Fei, Xiao-wei Wu, and Shan Wang. "SA Optimizing Algorithm of SVM Super-Parameters." In 2008 International Workshop on Geoscience and Remote Sensing (ETT and GRS). IEEE, 2008. http://dx.doi.org/10.1109/ettandgrs.2008.311.

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Davis, C., A. Neuber, J. Stephens, A. Young, J. Dickens, and M. Kristiansen. "Optimizing wire parameters in exploding wire arrays." In 2010 IEEE International Power Modulator and High Voltage Conference (IPMHVC). IEEE, 2010. http://dx.doi.org/10.1109/ipmhvc.2010.5958416.

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Reports on the topic "Optimizing parameters"

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Davis, Jeremy, Amy Bednar, and Christopher Goodin. Optimizing maximally stable extremal regions (MSER) parameters using the particle swarm optimization algorithm. Engineer Research and Development Center (U.S.), September 2019. http://dx.doi.org/10.21079/11681/34160.

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Nandwana, Peeyush, Ryan R. Dehoff, Sean L. Yoder, William H. Peter, and Magnus Ahlfors. Optimizing Parameters for Post-Processing of Ti-6Al-4V Components Fabricated by Additive Manufacturing for Superior Performance. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1427620.

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Reisch, Bruce, Pinhas Spiegel-Roy, Norman Weeden, Gozal Ben-Hayyim, and Jacques Beckmann. Genetic Analysis in vitis Using Molecular Markers. United States Department of Agriculture, April 1995. http://dx.doi.org/10.32747/1995.7613014.bard.

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Genetic analysis and mapping in grapes has been difficult because of the long generation period and paucity of genetic markers. In the present work, chromosome linkage maps were developed with RAPD, RFLP and isozyme loci in interspecific hybrid cultivars, and RAPD markers were produced in a V. vinifera population. In three cultivars, there were 19 linkage groups as expected for a species with 38 somatic chromosomes. These maps were used to locate chromosome regions with linkages to important genes, including those influencing powdery mildew and botrytis bunch rot resistance; flower sex; and berry shape. In V. vinifera, the occurrence of specific markers was correlated with seedlessness, muscat flavor and fruit color. Polymorphic RAPD bands included single copy as well as repetitive DNA. Mapping procedures were improved by optimizing PCR parameters with grape DNA; by the development of an efficient DNA extraction protocol; and with the use of long (17- to 24-mer) primers which amplify more polymorphic loci per primer. DNA fingerprint analysis with RAPD markers indicated that vinifera cultivars could be separated readily with RAPD profiles. Pinot gris, thought to be a sort of Pinot noir, differed by 12 bands from Pinot noir. This suggests that while Pinot gris may be related to Pinot noir, it is not likely to be a clone. The techniques developed in this project are now being further refined to use marker-assisted selection in breeding programs for the early selection of elite seedlings. Furthermore, the stage has been set for future attempts to clone genes from grapes based upon map locations.
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4

Shy, Daniel. A parameter study to optimizing scintillator characteristics for increased sensitivity in nuclear nonproliferation, safeguards, and security based applications. Office of Scientific and Technical Information (OSTI), August 2014. http://dx.doi.org/10.2172/1186744.

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5

Lacerda Silva, P., G. R. Chalmers, A. M. M. Bustin, and R. M. Bustin. Gas geochemistry and the origins of H2S in the Montney Formation. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329794.

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Abstract:
The geology of the Montney Formation and the geochemistry of its produced fluids, including nonhydrocarbon gases such as hydrogen sulfide were investigated for both Alberta and BC play areas. Key parameters for understanding a complex petroleum system like the Montney play include changes in thickness, depth of burial, mass balance calculations, timing and magnitudes of paleotemperature exposure, as well as kerogen concentration and types to determine the distribution of hydrocarbon composition, H2S concentrations and CO2 concentrations. Results show that there is first-, second- and third- order variations in the maturation patterns that impact the hydrocarbon composition. Isomer ratio calculations for butane and propane, in combination with excess methane estimation from produced fluids, are powerful tools to highlight effects of migration in the hydrocarbon distribution. The present-day distribution of hydrocarbons is a result of fluid mixing between hydrocarbons generated in-situ with shorter-chained hydrocarbons (i.e., methane) migrated from deeper, more mature areas proximal to the deformation front, along structural elements like the Fort St. John Graben, as well as through areas of lithology with higher permeability. The BC Montney play appears to have hydrocarbon composition that reflects a larger contribution from in-situ generation, while the Montney play in Alberta has a higher proportion of its hydrocarbon volumes from migrated hydrocarbons. Hydrogen sulphide is observed to be laterally discontinuous and found in discrete zones or pockets. The locations of higher concentrations of hydrogen sulphide do not align with the sulphate-rich facies of the Charlie Lake Formation but can be seen to underlie areas of higher sulphate ion concentrations in the formation water. There is some alignment between CO2 and H2S, particularly south of Dawson Creek; however, the cross-plot of CO2 and H2S illustrates some deviation away from any correlation and there must be other processes at play (i.e., decomposition of kerogen or carbonate dissolution). The sources of sulphur in the produced H2S were investigated through isotopic analyses coupled with scanning electron microscopy, energy dispersive spectroscopy, and mineralogy by X-ray diffraction. The Montney Formation in BC can contain small discrete amounts of sulphur in the form of anhydrite as shown by XRD and SEM-EDX results. Sulphur isotopic analyses indicate that the most likely source of sulphur is from Triassic rocks, in particular, the Charlie Lake Formation, due to its close proximity, its high concentration of anhydrite (18-42%), and the evidence that dissolved sulphate ions migrated within the groundwater in fractures and transported anhydrite into the Halfway Formation and into the Montney Formation. The isotopic signature shows the sulphur isotopic ratio of the anhydrite in the Montney Formation is in the same range as the sulphur within the H2S gas and is a lighter ratio than what is found in Devonian anhydrite and H2S gas. This integrated study contributes to a better understanding of the hydrocarbon system for enhancing the efficiency of and optimizing the planning of drilling and production operations. Operators in BC should include mapping of the Charlie Lake evaporites and structural elements, three-dimensional seismic and sulphate ion concentrations in the connate water, when planning wells, in order to reduce the risk of encountering unexpected souring.
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6

Styling Parameter Optimization of the Type C Recreational Vehicle Air Drag. SAE International, September 2021. http://dx.doi.org/10.4271/2021-01-5094.

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Recreational vehicles have a lot of potential consumers in China, especially the type C recreational vehicle is popular among consumers due to its advantages, prompting an increase in the production and sales volumes. The type C vehicle usually has a higher air drag than the common commercial vehicles due to its unique appearance. It can be reduced by optimizing the structural parameters, thus the energy consumed by the vehicle can be decreased. The external flow field of a recreational vehicle is analyzed by establishing its computational fluid dynamic (CFD) model. The characteristic of the RV’s external flow field is identified based on the simulation result. The approximation models of the vehicle roof parameters and air drag and vehicle volume are established by the response surface method (RSM). The vehicle roof parameters are optimized by multi-objective particle swarm optimization (MO-PSO). According to the comparison, the air drag is reduced by 2.89% and the vehicle volume is increased by 0.36%. For the RV, the proper geometry parameters can increase the inner space of the vehicle while reducing the air drag.
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7

Multiple Engine Faults Detection Using Variational Mode Decomposition and GA-K-means. SAE International, March 2022. http://dx.doi.org/10.4271/2022-01-0616.

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As a critical power source, the diesel engine is widely used in various situations. Diesel engine failure may lead to serious property losses and even accidents. Fault detection can improve the safety of diesel engines and reduce economic loss. Surface vibration signal is often used in non-disassembly fault diagnosis because of its convenient measurement and stability. This paper proposed a novel method for engine fault detection based on vibration signals using variational mode decomposition (VMD), K-means, and genetic algorithm. The mode number of VMD dramatically affects the accuracy of extracting signal components. Therefore, a method based on spectral energy distribution is proposed to determine the parameter, and the quadratic penalty term is optimized according to SNR. The results show that the optimized VMD can adaptively extract the vibration signal components of the diesel engine. In the actual fault diagnosis case, it is difficult to obtain the data with labels. The clustering algorithm can complete the classification without labeled data, but it is limited by the low accuracy. In this paper, the optimized VMD is used to decompose and standardize the vibration signal. Then the correlation-based feature selection method is implemented to obtain the feature results after dimensionality reduction. Finally, the results are input into the classifier combined by K-means and genetic algorithm (GA). By introducing and optimizing the genetic algorithm, the number of classes can be selected automatically, and the accuracy is significantly improved. This method can carry out adaptive multiple fault detection of a diesel engine without labeled data. Compared with many supervised learning algorithms, the proposed method also has high accuracy.
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