Filters








181,082 Hits in 4.2 sec

Computational geometry column 45

Joseph O'Rourke
2004 ACM SIGACT News  
Their software follows this recipe, computing T (1), and then numerically solving the differential equation.  ...  ACM SIGACT News Here r and κ(1) are both n-vectors, and M(t) is the n × n inverse matrix of the Jacobian computed for the polytope P (t).  ... 
doi:10.1145/992287.992302 fatcat:mqcqikioyneozjx7dhbhsuxbfm

COMPUTATIONAL GEOMETRY COLUMN 45

JOSEPH O'ROURKE
2004 International journal of computational geometry and applications  
Their software follows this recipe, computing T (1), and then numerically solving the differential equation.  ...  ACM SIGACT News Here r and κ(1) are both n-vectors, and M(t) is the n × n inverse matrix of the Jacobian computed for the polytope P (t).  ... 
doi:10.1142/s0218195904001445 fatcat:pd4tt2p6jzav5orssutiga67ii

Computational Geometry Column 45 [article]

Joseph O'Rourke
2004 arXiv   pre-print
The algorithm of Edelsbrunner for surface reconstruction by "wrapping" a set of points in R^3 is described.
arXiv:cs/0405034v1 fatcat:vb2butybnjhs3k4abmy5fneufa

Computational Geometry Column 60

Adrian Dumitrescu, Minghui Jiang
2014 ACM SIGACT News  
Their software follows this recipe, computing T (1), and then numerically solving the differential equation.  ...  ACM SIGACT News Here r and κ(1) are both n-vectors, and M(t) is the n × n inverse matrix of the Jacobian computed for the polytope P (t).  ... 
doi:10.1145/2696081.2696096 fatcat:lp67ictvavemtgexl6ggow43b4

Computational geometry column 59

Adrian Dumitrescu, Csaba D. Tóth
2014 ACM SIGACT News  
Their software follows this recipe, computing T (1), and then numerically solving the differential equation.  ...  ACM SIGACT News Here r and κ(1) are both n-vectors, and M(t) is the n × n inverse matrix of the Jacobian computed for the polytope P (t).  ... 
doi:10.1145/2636805.2636822 fatcat:u7cffogtfnd2tcw6kkrr3ox32q

Synthetic Database of Space Objects Encounter Events Subject to Epistemic Uncertainty

Luis Sánchez, Massimiliano Vasile
2020 Data in Brief  
DB1 database is constituted by 9,000 samples and 45 columns and a header, while DB2 is formed by 28,800 samples and 45 columns and a header.  ...  All of them are synthetic databases created using computer simulation to obtain the results presented in [1].  ...  DB1 is comprised of 90 0 0 rows and 45 columns. Database 2 is comprised of 28,800 rows and 45 columns. Each row on both Databases represents a space encounter event.  ... 
doi:10.1016/j.dib.2020.106298 pmid:32984484 pmcid:PMC7495056 fatcat:v6gx4z7u3nh5pgwwqqnpfa5m3a

NUMERICAL SIMULATION ON A DEEP-DRAFT SEMI-SUBMERSIBLE

MOHD ASAMUDIN A RAHMAN, Universiti Malaysia Terengganu, ALIATULNAJIHA AYUB
2021 Universiti Malaysia Terengganu Journal of Undergraduate Research  
Five models of immersed columns with different aspect ratios (ie. 0.6, 0.8, 1.0, 1.2 and 1.4) are numerically investigated under two different incidence angles, which are 0° and 45°.  ...  Therefore, a comprehensive numerical simulation is conducted using the Acusolve computational fluid dynamics (CFD) software.  ...  I 0° & 45°0.6 II 0° & 45°0.8 III 0° & 45°1.0 IV 0° & 45°1.2 V 0° & 45°1.4 Design Phase Rhino 6, a computer aided design (CAD) software, was used to design the DDSS.  ... 
doi:10.46754/umtjur.2021.04.008 fatcat:g2bkgq7bcnh7ndjzvfkznhukim

RESEARCH ON HEAVE PLATE EFFECT ON VERTICAL COLUMN MOTION

2016 Scientific Bulletin of Naval Academy  
To simplify the computational load we will use only one column vertical cross section because the vertical motion will determine effect of heave plates due to increased additional mass.  ...  Simplified Computational Fluid Dynamics(CFD) lead to fast simulation results and realistic vertical motion analysis.  ...  Fig. 3 . 3 Triangular shaped semisubmersible with heave plates in Modelmaker Fig. 6 .Fig. 7 . 67 One column inclined 30 degrees One column inclined 45 degrees Fig.8.  ... 
doi:10.21279/1454-864x-16-i2-014 fatcat:s6ogjsuflza77p76qw6fo4lvbq

Page 249 of Astronomy and Astrophysics Vol. 223, Issue 1-2 [page]

1989 Astronomy and Astrophysics  
Computer-generated pictures of the polar cap area at 45 keV seen at 0 = 79°,70°,60° ( from top to bottom ).  ...  In Figs. 4 and 5 we present a series of computer-generated pictures of the polar cap region at 32 keV (Fig. 4) and 45 keV (Fig. 5).  ... 

The influence of structure geometry and material on seismic metamaterial performance [article]

T. Venkatesh Varma, Bogdan Ungureanu, Saikat Sarkar, Richard Craster, Sebastien Guenneau, Stephane Brule
2020 arXiv   pre-print
En route to enhancing the bandgap, we have also studied the performance of SMs with different constituent materials; we find that steel columns, as inclusions, show large bandgaps, however, the columns  ...  functionality, and inspired by split rings, swiss-rolls, notch-shaped and labyrinthine designs of elementary cells in electromagnetic and mechanical metamaterials, we investigate altering the structure geometries  ...  To further investigate the efficacy of the design, transmission losses (see Fig. 11 ) are computed over a finite array of SM design consisting of five square steel columns (oriented at 0 • and 45 • ,  ... 
arXiv:2007.14424v1 fatcat:lu3hwuzm2jfabck2nkwgked2ey

Computational heat transfer analysis and combined ANN–GA optimization of hollow cylindrical pin fin on a vertical base plate

C BALACHANDAR, S ARUNKUMAR, M VENKATESAN
2015 Sadhana (Bangalore)  
100 45 15 9.35 5 3 250 45 15 9.58 5 3 500 45 15 9.72 5 3 Outer radius of fin, mm R i Inner radius of fin, mm N R Number of rows N C Number of columns Q Power supplied to heater base  ...  geometry.  ... 
doi:10.1007/s12046-015-0403-5 fatcat:mjzxobgigrhs7dp7lnuzlp5api

Page 1158 of American Society of Civil Engineers. Collected Journals Vol. 126, Issue 12 [page]

2000 American Society of Civil Engineers. Collected Journals  
1.0 C/60/0 60 0 0 C/60/140 | 60 140 | 0.93 C/60/170 60 170 C/60/200 } 60 200 C/45/0 45 0 C/45/140 45 140 C/45/170 | 45 | 70 C/45/200 45 200 Column number 1158 / JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL  ...  To ensure that the computed results were independent of grid density, a system- atic grid-independence study was conducted for the case of the 45 cm water column stirred at 200 rpm.  ... 

The Influence of Clamping, Structure Geometry, and Material on Seismic Metamaterial Performance

T. Venkatesh Varma, Bogdan Ungureanu, Saikat Sarkar, Richard Craster, Sébastien Guenneau, Stéphane Brûlé
2021 Frontiers in Materials  
En route to enhancing the bandgap, we have also studied the performance of SMs with different constituent materials; we find that steel columns, as inclusions, show large bandgaps, however, the columns  ...  Interestingly, clamping an SM to the bedrock creates a zero frequency stopband, but further effects can be observed in the higher frequency regime due to their specific geometry.  ...  To further investigate the efficacy of the design, transmission losses (see Figure 7 ) are computed over a finite array of SM design consisting of five square steel columns (oriented at 0 and 45 • , respectively  ... 
doi:10.3389/fmats.2021.603820 fatcat:eb3pyexgqzbfjbpvzaqmprbm6i

Use of circular cylinders as surrogates for hexagonal pristine ice crystals in scattering calculations at infrared wavelengths

Yong-Keun Lee, Ping Yang, Michael I. Mishchenko, Bryan A. Baum, Yong X. Hu, Hung-Lung Huang, Warren J. Wiscombe, Anthony J. Baran
2003 Applied Optics  
Thus it is quite reasonable to use a circular cylinder geometry as a surrogate for pristine hexagonal ice columns for scattering calculations at infrared ͑8 -12-m͒ wavelengths.  ...  We apply the finite-difference time-domain method to compute the optical properties of hexagonal ice columns smaller than 40 m.  ...  It has also been shown that it is not proper to approximate a complex aggregate geometry with a simplified geometry such as a hexagonal column for computing optical properties.  ... 
doi:10.1364/ao.42.002653 pmid:12777000 fatcat:jf2ytlrvknhmdbmumhk54aroh4

Morphometric structural diversity of a natural armor assembly investigated by 2D continuum strain analysis

Swati Varshney, Juha Song, Yaning Li, Mary C. Boyce, Christine Ortiz
2015 Journal of Structural Biology  
The results can be used to develop computational shape morphing algorithms such as our MetaMesh model (Duro-Royo et al., 2014), which defines local, regional, and global hierarchies of design rules of  ...  The technique can also be used to morph a shape into a target geometry with the application of a heterogeneous strain field.  ...  To validate our finite element computation of strain, we show that the computed strain fields comparing a biological scale to the reference geometry can be applied as a heterogeneous strain field to the  ... 
doi:10.1016/j.jsb.2015.10.011 pmid:26481418 fatcat:uu7hxdv7trbmfhwsx4ucdm34pi
« Previous Showing results 1 — 15 out of 181,082 results