Results 1 - 10 of 228

Determining an Optimal Visualization of Physically Realizable Symbol Maps

by Guilherme Kunigami, Pedro J. De Rezende, Cid C. De Souza, Tallys Yunes
"... Abstract—Proportional symbol maps are an often used tool to aid cartographers and geo-science professionals to visualize data associated with events (e.g., earthquakes) or geo-positioned statistical data (e.g., population). At specific locations, symbols are placed and scaled so that their areas bec ..."
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become proportional to the magnitudes of the events or data. Recent work approaches the problem of drawing these symbols algorithmically and defines metrics to be optimized to attain different kinds of drawings. We focus specifically on optimizing the visualization of physically realizable drawings

Generating optimal drawings of physically realizable symbol maps with integer programming

by Guilherme Kunigami, Pedro J. Rezende, C. C. de Souza, T. Yunes - VIS COMPUT , 2012
"... ..."
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Optimizing the Layout of Proportional Symbol Maps

by Guilherme Kunigami, Pedro J. De Rezende, Cid C. De Souza, Tallys Yunes
"... Abstract. Proportional symbol maps are a cartographic tool to assist in the visualization and analysis of quantitative data associated with specific locations (e.g. earthquake magnitudes, oil well production, temperature at weather stations, etc.). As the name suggests, symbol sizes are proportional ..."
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Abstract. Proportional symbol maps are a cartographic tool to assist in the visualization and analysis of quantitative data associated with specific locations (e.g. earthquake magnitudes, oil well production, temperature at weather stations, etc.). As the name suggests, symbol sizes

Behavioral theories and the neurophysiology of reward,

by Wolfram Schultz - Annu. Rev. Psychol. , 2006
"... ■ Abstract The functions of rewards are based primarily on their effects on behavior and are less directly governed by the physics and chemistry of input events as in sensory systems. Therefore, the investigation of neural mechanisms underlying reward functions requires behavioral theories that can ..."
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through mechanical, gustatory, visual, and auditory receptors of the sensory systems. The functions of rewards cannot be derived entirely from the physics and chemistry of input events but are based primarily on behavioral effects, and the investigation of reward functions requires behavioral theories

Algorithmic aspects of proportional symbol maps

by Sergio Cabello, Herman Haverkort, Marc Van Kreveld, Bettina Speckmann , 2008
"... Proportional symbol maps visualize numerical data associated with point locations by placing a scaled symbol—typically an opaque disk or square—at the corresponding point on a map. The area of each symbol is proportional to the numerical value associated with its location. Every visually meaningful ..."
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proportional symbol map will contain at least some overlapping symbols. These need to be drawn in such a way that the user can still judge their relative sizes accurately. We identify two types of suitable drawings: physically realizable drawings and stacking drawings. For these we study the following two

Optimizing the Layout of Proportional Symbol Maps: Polyhedra and Computation

by Guilherme Kunigami, Pedro J. De Rezende, Cid C. De Souza, Tallys Yunes , 2014
"... Proportional symbol maps are a cartographic tool to assist in the visualization and analysis of quantitativedata associated with specific locations, such as earthquake magnitudes, oil well production, and temperature at weather stations. As the name suggests, symbol sizes are proportional to the mag ..."
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Proportional symbol maps are a cartographic tool to assist in the visualization and analysis of quantitativedata associated with specific locations, such as earthquake magnitudes, oil well production, and temperature at weather stations. As the name suggests, symbol sizes are proportional

Physics

by Daniel Alexander Pertot, Jacobus Verbaarschot, Two-component Bosons In, Daniel Alexander Pertot , 2011
"... Ultracold atoms in optical lattices provide a highly control-lable environment for the clean experimental realization of various model Hamiltonians from condensed matter and statistical physics. For example, the two-component Bose-Hubbard model, which re-duces to an anisotropic spin-1/2 Heisenberg m ..."
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Ultracold atoms in optical lattices provide a highly control-lable environment for the clean experimental realization of various model Hamiltonians from condensed matter and statistical physics. For example, the two-component Bose-Hubbard model, which re-duces to an anisotropic spin-1/2 Heisenberg

Symbol and Bit Mapping Optimization for Physical-Layer Network Coding with Pulse Amplitude Modulation

by Ronald Y. Chang, Sian-jheng Lin, Wei-ho Chung - IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, ACCEPTED FOR PUBLICATION , 2013
"... In this paper, we consider a two-way relay network in which two users exchange messages through a single relay using a physical-layer network coding (PNC) based protocol. The protocol comprises two phases of communication. In the multiple access (MA) phase, two users transmit their modulated signal ..."
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to determine the optimal symbol/bit mappings with joint consideration of noisy transmissions in both communication phases. Complexity-reduction techniques are developed for solving the optimization problems. It is shown that the optimal symbol/bit mappings depend on the signal-to-noise ratio (SNR

Optimal global conformal surface parameterization

by Miao Jin, Yalin Wang, Shing-tung Yau, Xianfeng Gu - In IEEE Visualization , 2004
"... Figure 1: Uniform global conformal parameterization ((a) and (b)) and region emphasized conformal parameterization ((c) and (d)). (a). Least uniform conformal parameterization with energy: 21.208e − 5. (b). Most uniform conformal parameterization with energy: 3.685e − 5. (c). Maximizing the paramete ..."
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and governs many natural physical phenomena, such as heat diffusion and electro-magnetic fields on the surface. A good parameterization is crucial for simulation and visualization. This paper provides an explicit method for finding optimal global conformal parameterizations of arbitrary surfaces. It relies

1On the Subtleties of q-PAM Linear Physical-Layer Network Coding

by Long Shi, Soung Chang Liew, Lu Lu
"... Abstract—This paper investigates various subtleties of ap-plying linear physical-layer network coding (PNC) with q-level pulse amplitude modulation (q-PAM) in two-way relay channels (TWRC). A critical issue is how the PNC system performs when the received powers from the two users at the relay are i ..."
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operated with a belief propagation (BP) decoder, can remove the sensitivity problem, allowing a robust high-order modulated PNC system to be built. Index Terms—q-PAM linear physical-layer network coding, SER performance, symbol misalignment, belief propagation. I.
Results 1 - 10 of 228