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Suggested Approach (suggested + approach)

Distribution by Scientific Domains
Information Science and Computing22%
Engineering22%

Selected Abstracts

Grammar-based Encoding of Facades

COMPUTER GRAPHICS FORUM, Issue 4 2010
Simon Haegler
Abstract In this paper we propose a real-time rendering approach for procedural cities. Our first contribution is a new lightweight grammar representation that compactly encodes facade structures and allows fast per-pixel access. We call this grammar F -shade. Our second contribution is a prototype rendering system that renders an urban model from the compact representation directly on the GPU. Our suggested approach explores an interesting connection from procedural modeling to real-time rendering. Evaluating procedural descriptions at render time uses less memory than the generation of intermediate geometry. This enables us to render large urban models directly from GPU memory. [source]

Equipment, Supplies, and Pharmaceuticals: How Much Might It Cost to Achieve Basic Surge Capacity?

ACADEMIC EMERGENCY MEDICINE, Issue 11 2006
Dan Hanfling MD
The ability to deliver optimal medical care in the setting of a disaster event, regardless of its cause, will in large part be contingent on an immediately available supply of key medical equipment, supplies, and pharmaceuticals. Although the Department of Health and Human Services Strategic National Stockpile program makes these available through its 12-hour "push packs" and vendor-managed inventory, every local community should be funded to create a local cache for these items. This report explores the funding requirements for this suggested approach. Furthermore, the response to a surge in demand for care will be contingent on keeping available staff close to the hospitals for a sustained period. A proposal for accomplishing this, with associated costs, is discussed as well. [source]

Towards the algorithmic treatment of 3D strong discontinuities

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING, Issue 2 2007
J. Mergheim
Abstract A geometrically non-linear finite element framework for the modelling of propagating discontinuities in three-dimensional continua is presented. By doubling the degrees of freedom in the discontinuous elements, the algorithm allows for arbitrary discontinuities which are not restricted to inter-element boundaries. The deformation field is interpolated independently on both sides of the discontinuity. In contrast to the X-FEM, the suggested approach thus relies exclusively on displacement degrees of freedom. On the discontinuity surface, the jump in the deformation is related to the cohesive tractions to account for smooth crack opening. Computational difficulties characteristic of three-dimensional crack propagation are addressed. The performance of the method is elaborated by means of a homogeneous three-dimensional tension problem and by means of the classical peel test. Copyright © 2006 John Wiley & Sons, Ltd. [source]

Variable structure robust state and parameter estimator

INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING, Issue 2 2001
Alex S. Poznyak
Abstract The problem of simultaneous robust state and parameters estimation for a class of SISO non-linear systems under mixed uncertainties (unmodelled dynamics as well as observation noises) is addressed. A non-linear variable structure robust ,observer,identifier' is introduced to obtain the corresponding estimates. Lie derivative technique is used to obtain the observability conditions for the equivalent extended non-linear system. It is shown that, in general, the extended system can lose the global observability property and a special procedure is needed to work well in this situation. The suggested adaptive observer has the non-linear high-gain observer structure with adjusted parameters that provides ,a good' upper bound for the identification error performance index. The van der Monde transformation is used to derive this bound which turns out to be tight. Three examples dealing with a simple pendulum, the Duffing equation and the van del Pol oscillator are considered to illustrate the effectiveness of the suggested approach. Copyright © 2001 John Wiley & Sons, Ltd. [source]

Boys' Lack of Interest in Fine Arts in a Coeducational Setting: A Review of Sex-Related Cognitive Traits Studies

INTERNATIONAL JOURNAL OF ART & DESIGN EDUCATION, Issue 1 2009
Alain Savoie
Fine arts teachers' concerns about male underachievement in a Quebec coeducational high school, and a related survey showing boys' negative perceptions of fine arts motivated this interdisciplinary literature review. Referring to biology and cognitive science, the article explores concepts of sex-related cognitive traits to help in designing sex-adapted approaches to individual learning in art education. The nature-nurture controversy still surrounds sex-based cognitive differences studies, though science agrees that natural and socio-cultural factors are somehow closely interwoven in the complex gender identity construction process. Sex-related biological predispositions influencing cognition are proposed notably in ,instrumentality-expressiveness' and ,empathising-systemising (E-S)' theories. The article suggests that in the context of art education, these sex-related cognitive models deserve study, because they could initiate sex-adapted teaching strategies with the necessary flexibility and wider scope to overcome gender-stereotyped biases and stimulate boys' interest in the arts. This suggested approach should not be confused with stereotype-based pedagogy, which merely strengthens learned gender characteristics, producing or maintaining academic underachievement. [source]

Tracking a partially occluded target with a cluster of Kalman filters

INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS, Issue 6 2002
Dae-Sik Jang
Tracking moving objects is one of the most important techniques in motion analysis and understanding, and it has many difficult problems to solve. Estimating and identifying moving objects, when the background and moving objects vary dynamically, are especially difficult. It is possible under such a complex environment that targets might disappear totally or partially due to occlusion by other objects. The Kalman filter has been used to estimate motion information and use the information in predicting the appearance of targets in succeeding frames. In this article, we propose another version of the Kalman filter, to be called the structural Kalman filter, which can successfully accomplish its role of estimating motion information under such a deteriorating condition as occlusion. Experimental results show that the suggested approach is very effective in estimating and tracking non-rigid moving objects reliably. © 2002 Wiley Periodicals, Inc. [source]

Geometrical properties of nodal surfaces of many-electron wave functions

INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, Issue 10 2010
Nikolai D. Chuvylkin
Abstract Hypothesis of the exclusion of equipotential surfaces for many-electron wave functions (MWF) has been enunciated. This hypothesis clarifies the physical meaning of the Pauli exclusion principle and opens the way for future progress of new quantum-chemical methods for the construction of approximate MWFs differing from the traditional Hartree,Fock approximation. The equipotential surface exclusion principle has been tested on traditional representative "test systems" of quantum mechanics: the helium atom, the lithium atom, and the hydrogen molecule. Judging by the results of these tests, the use of the suggested approach can lead to a considerable increase in the efficiency of high-accuracy quantum-chemical calculations. © 2009 Wiley Periodicals, Inc. Int J Quantum Chem, 2010 [source]

Clustering in the Presence of Scatter

BIOMETRICS, Issue 2 2009
Ranjan Maitra
Summary:, A new methodology is proposed for clustering datasets in the presence of scattered observations. Scattered observations are defined as unlike any other, so traditional approaches that force them into groups can lead to erroneous conclusions. Our suggested approach is a scheme which, under assumption of homogeneous spherical clusters, iteratively builds cores around their centers and groups points within each core while identifying points outside as scatter. In the absence of scatter, the algorithm reduces to k -means. We also provide methodology to initialize the algorithm and to estimate the number of clusters in the dataset. Results in experimental situations show excellent performance, especially when clusters are elliptically symmetric. The methodology is applied to the analysis of the United States Environmental Protection Agency's Toxic Release Inventory reports on industrial releases of mercury for the year 2000. [source]

The 3-Minute Emergency Medicine Medical Student Presentation: A Variation on a Theme

ACADEMIC EMERGENCY MEDICINE, Issue 7 2008
Chip Davenport BA
Abstract Oral presentations are a critical element in the communication of medical knowledge between students and faculty, but in most locations, the amount of time spent on teaching the oral presentation is minimal. Furthermore, the standard oral presentation does not work well within the emergency medicine (EM) setting, due to time constraints and the different principles that make EM a unique specialty. This article provides a suggested approach on how to educate students on optimal oral presentations in EM, as well as providing a link to an online guide instructing medical students how to give oral presentations. [source]