Academic literature on the topic 'Graded density'
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Journal articles on the topic "Graded density"
Brothers, A. H., and D. C. Dunand. "Density-Graded Cellular Aluminum." Advanced Engineering Materials 8, no. 9 (September 2006): 805–9. http://dx.doi.org/10.1002/adem.200600074.
Full textWinter, R. E., M. Cotton, E. J. Harris, D. J. Chapman, and D. Eakins. "A novel graded density impactor." Journal of Physics: Conference Series 500, no. 14 (May 7, 2014): 142034. http://dx.doi.org/10.1088/1742-6596/500/14/142034.
Full textBalaba, I. N., S. V. Limarenko, A. V. Mikhalev, and S. V. Zelenov. "Density Theorems for Graded Rings." Journal of Mathematical Sciences 128, no. 6 (August 2005): 3350–64. http://dx.doi.org/10.1007/s10958-005-0272-2.
Full textAslam, Tariq D., Michael A. McBride, Nirmal Rai, Daniel E. Hooks, Jamie A. Stull, and Brian J. Jensen. "Modeling atomically mixed graded density impactors." Journal of Applied Physics 131, no. 22 (June 14, 2022): 225901. http://dx.doi.org/10.1063/5.0085223.
Full textHe, Si-Yuan, Yi Zhang, Ge Dai, and Jia-Qiao Jiang. "Preparation of density-graded aluminum foam." Materials Science and Engineering: A 618 (November 2014): 496–99. http://dx.doi.org/10.1016/j.msea.2014.08.087.
Full textWitthayaweerasak, Juthamat, Pemika Lertjittham, and Nipat Aui-aree. "Correlation between relative afferent pupillary defect and visual field defects on Humphrey automated perimetry: A cross-sectional clinical trial." PLOS ONE 17, no. 5 (May 26, 2022): e0267469. http://dx.doi.org/10.1371/journal.pone.0267469.
Full textTrivedi, Vijaylaxmi, and Kei-Ichi Watanabe. "Hilbert-Kunz density function for graded domains." Journal of Pure and Applied Algebra 226, no. 2 (February 2022): 106835. http://dx.doi.org/10.1016/j.jpaa.2021.106835.
Full textWang, Xiaokai, Zhijun Zheng, and Jilin Yu. "Crashworthiness design of density-graded cellular metals." Theoretical and Applied Mechanics Letters 3, no. 3 (2013): 031001. http://dx.doi.org/10.1063/2.1303101.
Full textZhong Yanhong, 钟艳红, 周斌 Zhou Bin, 归佳寅 Gui Jiayin, 杜艾 Du Ai, 吴广明 Wu Guangming, 张志华 Zhang Zhihua, and 沈军 Shen Jun. "Fabrication of multilayer graded density carbon aerogel target." High Power Laser and Particle Beams 23, no. 3 (2011): 657–60. http://dx.doi.org/10.3788/hplpb20112303.0657.
Full textLi, Jingde, Guowei Ma, Hongyuan Zhou, and Xiuli Du. "Energy Absorption Analysis of Density Graded Aluminium Foam." International Journal of Protective Structures 2, no. 3 (September 2011): 333–49. http://dx.doi.org/10.1260/2041-4196.2.3.333.
Full textDissertations / Theses on the topic "Graded density"
McConaha, Matthew. "Graded Lattice Structure Density Optimization for Additive Manufacturing." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1523634949822303.
Full textYao, Jiaolian. "DENSITY GRADED LMDPE FOAMS PRODUCED UNDER A TEMPERATURE GRADIENT: MORPHOLOGY AND PROPERTIES." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28072/28072.pdf.
Full textIn this work, linear medium density polyethylene (LMDPE) and Expancel microbeads were used to produce density graded polymer foams using compression molding. By controlling independently the top and bottom plate temperatures in the mold, different temperatures and molding times were used to produce symmetric and asymmetric foams. The effect of blowing agent type and content were also studied to control the density profile and foam morphology (cell size and cell density) across thickness. Finally, the mechanical behavior in flexion and tension is reported and discussed in relation with foam morphology and structure.
Bajaj, Sanyam. "Design and Engineering of AlGaN Channel-Based Transistors." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1514904566666781.
Full textJoseph, Roy. "Development of an injection moulding grade hydroxyapatite polyethylene composite." Thesis, Queen Mary, University of London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395936.
Full textParrondo, Aitor. "Optimisation and mode of action of antioxidant stabilisation in film grade high-density polyethylene." Thesis, Manchester Metropolitan University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366053.
Full textNguyen, Minh-Lien Jeanne. "Estimation non paramétrique de densités conditionnelles : grande dimension, parcimonie et algorithmes gloutons." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS185/document.
Full textWe consider the problem of conditional density estimation in moderately large dimen- sions. Much more informative than regression functions, conditional densities are of main interest in recent methods, particularly in the Bayesian framework (studying the posterior distribution, find- ing its modes...). After recalling the estimation issues in high dimension in the introduction, the two following chapters develop on two methods which address the issues of the curse of dimensionality: being computationally efficient by a greedy iterative procedure, detecting under some suitably defined sparsity conditions the relevant variables, while converging at a quasi-optimal minimax rate. More precisely, the two methods consider kernel estimators well-adapted for conditional density estimation and select a pointwise multivariate bandwidth by revisiting the greedy algorithm RODEO (Regular- isation Of Derivative Expectation Operator). The first method having some initialization problems and extra logarithmic factors in its convergence rate, the second method solves these problems, while adding adaptation to the smoothness. In the penultimate chapter, we discuss the calibration and nu- merical performance of these two procedures, before giving some comments and perspectives in the last chapter
Locke, Shawn Lee. "Estimating Rio Grande wild turkey densities in Texas." Thesis, [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1970.
Full textIkwut-Ukwa, Udungs Henry. "Advances in vehicle emissions modeling : development of a methodology for the kinematic acquisition of roadway grade data." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/20843.
Full textDändliker, Thomas. "Optimisation de la densité de reboisement en fonction des grades de qualité des bois sciés." Master's thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/69047.
Full textSebbar, Mehdi. "On unsupervised learning in high dimension." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLG003/document.
Full textIn this thesis, we discuss two topics, high-dimensional clustering on the one hand and estimation of mixing densities on the other. The first chapter is an introduction to clustering. We present various popular methods and we focus on one of the main models of our work which is the mixture of Gaussians. We also discuss the problems with high-dimensional estimation (Section 1.3) and the difficulty of estimating the number of clusters (Section 1.1.4). In what follows, we present briefly the concepts discussed in this manuscript. Consider a mixture of $K$ Gaussians in $RR^p$. One of the common approaches to estimate the parameters is to use the maximum likelihood estimator. Since this problem is not convex, we can not guarantee the convergence of classical methods such as gradient descent or Newton's algorithm. However, by exploiting the biconvexity of the negative log-likelihood, the iterative 'Expectation-Maximization' (EM) procedure described in Section 1.2.1 can be used. Unfortunately, this method is not well suited to meet the challenges posed by the high dimension. In addition, it is necessary to know the number of clusters in order to use it. Chapter 2 presents three methods that we have developed to try to solve the problems described above. The works presented there have not been thoroughly researched for various reasons. The first method that could be called 'graphical lasso on Gaussian mixtures' consists in estimating the inverse matrices of covariance matrices $Sigma$ (Section 2.1) in the hypothesis that they are parsimonious. We adapt the graphic lasso method of [Friedman et al., 2007] to a component in the case of a mixture and experimentally evaluate this method. The other two methods address the problem of estimating the number of clusters in the mixture. The first is a penalized estimate of the matrix of posterior probabilities $ Tau in RR ^ {n times K} $ whose component $ (i, j) $ is the probability that the $i$-th observation is in the $j$-th cluster. Unfortunately, this method proved to be too expensive in complexity (Section 2.2.1). Finally, the second method considered is to penalize the weight vector $ pi $ in order to make it parsimonious. This method shows promising results (Section 2.2.2). In Chapter 3, we study the maximum likelihood estimator of density of $n$ i.i.d observations, under the assumption that it is well approximated by a mixture with a large number of components. The main focus is on statistical properties with respect to the Kullback-Leibler loss. We establish risk bounds taking the form of sharp oracle inequalities both in deviation and in expectation. A simple consequence of these bounds is that the maximum likelihood estimator attains the optimal rate $((log K)/n)^{1/2}$, up to a possible logarithmic correction, in the problem of convex aggregation when the number $K$ of components is larger than $n^{1/2}$. More importantly, under the additional assumption that the Gram matrix of the components satisfies the compatibility condition, the obtained oracle inequalities yield the optimal rate in the sparsity scenario. That is, if the weight vector is (nearly) $D$-sparse, we get the rate $(Dlog K)/n$. As a natural complement to our oracle inequalities, we introduce the notion of nearly-$D$-sparse aggregation and establish matching lower bounds for this type of aggregation. Finally, in Chapter 4, we propose an algorithm that performs the Kullback-Leibler aggregation of components of a dictionary as discussed in Chapter 3. We compare its performance with different methods: the kernel density estimator , the 'Adaptive Danzig' estimator, the SPADES and EM estimator with the BIC criterion. We then propose a method to build the dictionary of densities and study it numerically. This thesis was carried out within the framework of a CIFRE agreement with the company ARTEFACT
Books on the topic "Graded density"
Rogge, David F. Compaction and measurement of field density for Oregon open-graded (F-mix) asphalt pavement. Salem, Or: Oregon Dept. of Transportation, Research Group, 1999.
Find full textJacqueline, Barber, and GEMS (Project), eds. Discovering density: Teacher's guide : grades 6-8. Berkeley, CA: Great Explorations in Math and Science, Lawrence Hall of Science, University of California at Berkeley, 2004.
Find full textVolume, Mass, and Density (Lifepac Science Grade 9-Physical Science 2). Alpha Omega Publications (AZ), 2001.
Find full textFloaters and Sinkers; Mass, Volume, and Density; Grades 5-9 (Activities Integrating Math and Science). AIMS Education Foundation, 2004.
Find full textBarrat, J. L., and J. J. de Pablo. Introduction to molecular simulations in soft matter. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198789352.003.0011.
Full textMann, Peter. Hamilton-Jacobi Theory. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198822370.003.0019.
Full textFaber, Roland. Uniting Earth to the Blue of Heaven Above: Strange Attractors in Whitehead’s Symbolism. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9781474429566.003.0004.
Full textBook chapters on the topic "Graded density"
Koohbor, Behrad, Suraj Ravindran, and Addis Kidane. "Impact Response of Density Graded Cellular Polymers." In Dynamic Behavior of Materials, Volume 1, 17–23. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62956-8_4.
Full textMatsumoto, Yoshihisa, A. H. Brothers, and David C. Dunand. "Density-Graded Aluminum Foams by the Corrosion Method." In THERMEC 2006, 1903–8. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-428-6.1903.
Full textLi, Xu, Hongfen Zhao, and Limin Zhang. "Particle-Size Distribution and Density of Natural Widely-Graded Colluvial Soils." In Fundamental Behavior of Unsaturated Widely-Graded Soil, 13–40. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3402-5_2.
Full textGupta, Vijendra, Addis Kidane, and Michael Sutton. "Density-Graded 3D Voronoi Cellular Structures for Improved Impact Performance." In Dynamic Behavior of Materials, Volume 1, 123–28. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-17453-7_18.
Full textRamírez, Emilio A., Nicolas Béraud, Franck Pourroy, François Villeneuve, and Matthieu Museau. "A Design Methodology for Graded Density Triply Periodic Minimal Surfaces." In Advances on Mechanics, Design Engineering and Manufacturing IV, 955–66. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-15928-2_84.
Full textMiller, Dennis, Vijendra Gupta, and Addis Kidane. "Dynamic Response of Layered Functionally Graded Polyurethane Foam with Nonlinear Density Variation." In Dynamic Behavior of Materials, Volume 1, 25–30. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30021-0_5.
Full textGupta, Vijendra, Dennis Miller, and Addis Kidane. "Numerical and Experimental Investigation of Density Graded Foams Subjected to Impact Loading." In Dynamic Behavior of Materials, Volume 1, 31–35. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30021-0_6.
Full textWang, Chi-Yuen, and Michael Manga. "Liquefaction." In Lecture Notes in Earth System Sciences, 301–21. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64308-9_11.
Full textBemiss, Allison. "Star Light, Star Bright: Density." In Hands–On Steam Explorations for Young Learners Grades Pre-K-2, 113–26. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003235507-11.
Full textLutenegger, Alan J. "Density (Unit Weight) of Solids (Specific Gravity)." In Laboratory Manual for Geotechnical Characterization of Fine-Grained Soils, 33–40. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003263289-4.
Full textConference papers on the topic "Graded density"
Low, K. H., C. N. Sun, K. F. Leong, Z. H. Liu, D. Q. Zhang, and J. Wei. "Selective Laser Melting of Density Graded TI6AL4V." In 1st International Conference on Progress in Additive Manufacturing. Singapore: Research Publishing Services, 2014. http://dx.doi.org/10.3850/978-981-09-0446-3_078.
Full textJiang, Ai-min, and Yi-li Wu. "Analytical Solutions to Density Functionally Graded Piezoelectric Cantilever Beams." In 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM). IEEE, 2009. http://dx.doi.org/10.1109/wicom.2009.5302619.
Full textDauvegis, Raphaël, and Denis Rodrigue. "The mechanical properties of density graded hemp/polyethylene composites." In PROCEEDINGS OF PPS-30: The 30th International Conference of the Polymer Processing Society – Conference Papers. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4918419.
Full textKoomans, R. L., R. J. de Meijer, and L. B. Venema. "Cross-Shore Graded Sediment Transport: Grain Size and Density Effects." In 26th International Conference on Coastal Engineering. Reston, VA: American Society of Civil Engineers, 1999. http://dx.doi.org/10.1061/9780784404119.185.
Full textIhalane, El hassane, Lahoucine Atourki, Lahbib Alahyane, Lahcen Boulkaddat, El houcine El hamri, Hassan Kirou, Ahmed Ihlal, and Khalid Bouabid. "Analytical calculation of photocurrent density in CIGS double graded solar cell." In 2014 International Renewable and Sustainable Energy Conference (IRSEC). IEEE, 2014. http://dx.doi.org/10.1109/irsec.2014.7059756.
Full textBates, Simon R. G., Ian R. Farrow, and Richard S. Trask. "3D printed elastic honeycombs with graded density for tailorable energy absorption." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Gyuhae Park. SPIE, 2016. http://dx.doi.org/10.1117/12.2219322.
Full textWang, W. B., X. H. Yang, Q. C. Zhang, and T. J. Lu. "Solidification Analysis of Density-Graded Closed-Cell Metallic Foam Under Constant Temperature Boundary Condition." In ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/mnhmt2016-6719.
Full textAnufrieva, A. V., D. N. Tumakov, and V. L. Kipot. "Elastic wave propagation through a layer with graded-index distribution of density." In Days on Diffraction 2012 (DD). IEEE, 2012. http://dx.doi.org/10.1109/dd.2012.6402745.
Full textAnderson, M. U., L. C. Chhabildas, and W. D. Reinhart. "Simultaneous PVDF/VISAR measurement technique for isentropic loading with graded density impactors." In The tenth American Physical Society topical conference on shock compression of condensed matter. AIP, 1998. http://dx.doi.org/10.1063/1.55681.
Full textHall, A. C., C. M. Weyant, J. L. Wise, C. A. Hall, S. C. Jones, D. A. Urrea, J. F. Mccloskey, et al. "Graded Coatings for Light Gas Gun Flyer Plate Applications." In ITSC2006, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, R. S. Lima, and J. Voyer. ASM International, 2006. http://dx.doi.org/10.31399/asm.cp.itsc2006p0443.
Full textReports on the topic "Graded density"
Anderson, M. U., L. C. Chhabildas, and W. D. Reinhart. Simultaneous PVDF/VISAR measurement technique for isentropic loading with graded density impactors. Office of Scientific and Technical Information (OSTI), October 1997. http://dx.doi.org/10.2172/537389.
Full textFurnish, Michael David, William Dodd Reinhart, William W. Anderson, Tracy John Vogler, Rob Hixson, and Marlin E. Kipp. Exploring pulse shaping for Z using graded-density impactors on gas guns (final report for LDRD project 79879). Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/876342.
Full textRahman, Shahedur, Rodrigo Salgado, Monica Prezzi, and Peter J. Becker. Improvement of Stiffness and Strength of Backfill Soils Through Optimization of Compaction Procedures and Specifications. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317134.
Full textMejias-Santiago, Mariely, IV Berney, Bradley Ernest S., and Chase T. Evaluation of a Non-Nuclear Soil Density Gauge on Fine-Grained Soils. Fort Belvoir, VA: Defense Technical Information Center, May 2013. http://dx.doi.org/10.21236/ada581212.
Full textSutton, Eric K. Accelerometer-Derived Atmospheric Density from the CHAMP and GRACE Satellites. Version 2.3. Fort Belvoir, VA: Defense Technical Information Center, February 2011. http://dx.doi.org/10.21236/ada537198.
Full textHabib, Ayman, Darcy M. Bullock, Yi-Chun Lin, and Raja Manish. Road Ditch Line Mapping with Mobile LiDAR. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317354.
Full textde Caritat, Patrice, Brent McInnes, and Stephen Rowins. Towards a heavy mineral map of the Australian continent: a feasibility study. Geoscience Australia, 2020. http://dx.doi.org/10.11636/record.2020.031.
Full textGur, Amit, Edward Buckler, Joseph Burger, Yaakov Tadmor, and Iftach Klapp. Characterization of genetic variation and yield heterosis in Cucumis melo. United States Department of Agriculture, January 2016. http://dx.doi.org/10.32747/2016.7600047.bard.
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