A systematic, automatable, unified methodology is presented for the modeling of non-linear large-signal dynamics and eigenvalue analysis of microgrid systems. Unlike nodal-based simulators and typical state-variable methods that require Kirchhoff’s current law analysis, a state-space model is systematically derived from the netlist of the equivalent qd microgrid circuit model. The model may be ...

A. In a recent paper, M. Green and P. Griffiths used R. Thomas’ work on nodal hypersurfaces to sketch a proof of the equivalence of the Hodge conjecture and the existence of certain singular admissible normal functions. Inspired by their work, we study normal functions using Morihiko Saito’s mixed Hodge modules and prove that the existence of singularities of the type considered by Griff...

Lobectomy and systematic nodal dissection are still the standard for small-size (<3 cm) nonsmall cell lung cancer. There is growing interest in more parenchyma-sparing surgery, so-called sublobar resections (wedge resection or segmentectomy). Indeed, nonrandomised trials suggest that a segmentectomy may result in local control rates that are similar to lobectomy. Nonsurgical approaches, such as...

A novel systematic approach for synthesizing DDCC-based voltage-mode biquadratic universal filters is proposed. The DDCCs are described by infinity-variables’ models of nullor-mirror elements which can be used in the nodal admittance matrix expansion process. Applying the proposed method, the obtained 12 equivalent filters offer the following features: multi-input and two outputs, realization o...

This paper proposes a stabilization of the classical hierarchical basis (HB)-nite element method by modifying the standard nodal basis functions that correspond to the hierarchical complement (in the next ner discretization space) of any successive coarse dis-cretization space using computationally feasible approximate L 2 {projections onto the given coarse space. The corresponding multilevel a...

Individuals who cannot functionally reposition themselves often need dynamic seating interventions that change body posture from automatic chair adjustments. Pelvis alignment directly affects sitting posture, and systems that adjust and monitor pelvis angle simultaneously might be applicable to control body posture in sitting. The present study explores whether it is feasible to monitor pelvis ...

Growing bodies of research have investigated how digital games might be used as pedagogical tools and separately, how playing commercial games influences basic cognitive capacities or skills. The goal of the present research is to draw from these separate lines of research to ask how changes in basic cognitive capacities and formal learning gains may be related. The present study employed a gam...

This paper presents a physics-based approach to anatomical surface segmentation, reconstruction, and tracking in multidimensional medical images. The approach makes use of a dynamic \balloon" model|a spherical thin-plate under tension surface spline which deforms elastically to t the image data. The tting process is mediated by internal forces stemming from the elastic properties of the spline ...

Introduction: Developmental changes in atrioventricular nodal conduction time and refractoriness have been shown in several studies. Prevalence of atrioventricular nodal reentrant tachycardia (AVNRT) is clearly age-dependent. The purpose of this study was to determine developmental changes of basic and frequency-dependent electrophysiological properties of the atrioventricular node (AV-node)...

Stokes flows are a type of fluid flow where convective forces small in comparison with viscous forces, and momentum transport is entirely due to diffusion. Besides being routinely used as benchmark test cases numerical dynamics, relevant several applications science engineering including porous media flow, biological flows, microfluidics, microrobotics, hydrodynamic lubrication. The present stu...