There is growing interest in large infrequent disturbances (LIDs), but by definition they occur rarely and long-term data are needed in order to study their effects and frequency. Palaeoecological records have the potential to provide information on…
Papers in Computational Physics
Computational Physics papers in Physics, A
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We have developed a 2.5D finite-element modeling FEM method for marine controlled-source electromagnetic CSEM applications in stratified anisotropic media. The main feature of the method is that delta sources are used to solve the governing partial…
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The lattice Boltzmann method (LBM) and electrohydrodynamics are both active subjects in fluid mechanics research in recent years. In this paper, we present a method to apply a multicomponent LBM to A series of drop deformation simulations under the…
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Li-ion batteries have contributed to the commercial success of portable electronics, and are now in a position to influence higher-volume applications such as plug-in hybrid electric vehicles. Most commercial Li-ion batteries use positive electrodes…
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A 3&x00D7;3 prototype image sensor array consisting of 2&x00B5;m diameter CMOS avalanche photodiodes with 3-transistor NMOS pixel circuitry is integrated in a 90nm CMOS image sensor technology. The 5&x00B5;m pixel pitch is the smallest achieved to…
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A new 3D cylindrical perfectly matched layer (PML) formulation is developed for elastic wave propagation in a pressurized borehole surrounded by a triaxially stressed solid formation. The linear elastic formation is altered by overburden and…
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A modified set of Maxwell's equations is presented that includes complex coordinate stretching along the three Cartesian coordinates. The added degrees of freedom in the modified Maxwell's equations allow the specification of absorbing boundaries…
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A highly linear calibration free VCO-based ADC uses a two-level modulator to eliminate distortion caused by tuning non-linearity of the VCO. The proposed architecture does not require a multi-level feedback DAC and eases anti-aliasing requirements.…
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Under physiological conditions, a protein undergoes a spontaneous disorder order transition called folding. The protein polymer is highly flexible when unfolded but adopts its unique native, three-dimensional structure when folded. Current…
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A balanced force refined level set grid method for two-phase flows on unstructured flow solver gridsA balanced force refined level set grid method for two-phase flows on structured and unstructured flow solver grids is presented. To accurately track the phase interface location, an auxiliary, high-resolution equidistant Cartesian grid is…
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A new balanced-force algorithm is presented for modeling interfacial flow with surface tension. The algorithm is characterized by a pressure-correction method with the interfaces represented by volume fractions. Within this flow algorithm, we devise…
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The Internet has emerged as a versatile information repository tool that offers immense potential in optimizing the transactional dynamics of teaching and learning. In the context of a developed country such as Singapore, the Internet is an…
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A battery-free 225 nW buck converter is implemented by using 0.25-&x00B5;m CMOS process with die area of 0.21 mm2. The dynamic on/off time (DOOT) technique can predict the on/off time at different input voltage, as well as suppress static power in…
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We have developed a new battery-less bit-error-rate modulated (BERM) data transmission technology that can directly send data to a WiFi-equipped PC without affecting WiFi communication on the PC. BER modulated data at a 5.5kbps data-rate has been…
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We present an efficient, principled, and interpretable technique for inferring module assignments and for identifying the optimal number of modules in a given network. We show how several existing methods for finding modules can be described as…
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Powerful methods are now available for solving linear parametric inverse problems. However, many inverse problems which arise in geohysics are nonlinear. Fortunately, it is possible to treat most of these with the air of linear perturbation theory…
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A collection of jobs (or customers, or patients) wait impatiently for service. Each has a random lifetime during which it is available for service. Should this lifetime expire before its service starts then it leaves unserved. Limited resources mean…
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A Bayesian approach is applied to the observed global surface air temperature SAT) changes using multimodel ensembles (MMEs) of the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) simulations and single-model…
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A Bayesian integrated population dynamics model to analyze data for protected species. Managing wildlifehuman interactions demands reliable information about the likely consequences of management actions. This requirement is a general one, whatever…
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This paper presents a Bayesian method for constructing probabilistic networks from databases. In particular, we focus on constructing Bayesian belief networks. Potential applications include computer-assisted hypothesis testing, automated scientific…
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