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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Kirby, Robert Michael | Kirby research group | 2012 | ||
| 2 |
 | Hansen, Charles D. | A practical workflow for making anatomical atlases for biological research | An anatomical atlas provides a detailed map for medical and biological studies of anatomy. These atlases are important for understanding normal anatomy and the development and function of structures, and for determining the etiology of congenital abnormalities. Unfortunately, for biologists, generat... | 2012-01-01 | |
| 3 |
 | Cohen, Elaine | A triangulation-invariant method for anisotropic geodesic map computation on surface meshes | This paper addresses the problem of computing the geodesic distance map from a given set of source vertices to all other vertices on a surface mesh using an anisotropic distance metric. Formulating this problem as an equivalent control theoretic problem with Hamilton-Jacobi-Bellman partial different... | 2012-01-01 | |
| 4 |
 | Berzins, Martin | Adaptive high-order discontinuous galerkin solution of elastohydrodynamic lubrication point contact problems | This paper describes an adaptive implementation of a high order Discontinuous Galerkin (DG) method for the solution of elastohydrodynamic lubrication (EHL) point contact problems. These problems arise when modelling the thin lubricating film between contacts which are under sufficiently high pressur... | 2012-01-01 | |
| 5 |
 | Venkatasubramanian, Suresh | Approximate Bregman near neighbors in sublinear time: beyond the triangle inequality | Bregman divergences are important distance measures that are used extensively in data-driven applications such as computer vision, text mining, and speech processing, and are a key focus of interest in machine learning. Answering nearest neighbor (NN) queries under these measures is very important i... | 2012-01-01 | |
| 6 |
 | Johnson, Christopher R. | Biomedical visual computing: case studies and challenges | Advances in computational geometric modeling, imaging, and simulation let researchers build and test models of increasing complexity, generating unprecedented amounts of data. As recent research in biomedical applications illustrates, visualization will be critical in making this vast amount of data... | 2012-01-01 | |
| 7 |
 | Hansen, Charles D. | Combined surface and volumetric occlusion shading | In this paper, a method for interactive direct volume rendering is proposed that computes ambient occlusion effects for visualizations that combine both volumetric and geometric primitives, specifically tube shaped geometric objects representing streamlines, magnetic field lines or DTI fiber tracts.... | 2012-01-01 | |
| 8 |
 | Pascucci, Valerio | Combining in-situ and in-transit processing to enable extreme-scale scientific analysis | With the onset of extreme-scale computing, I/O constraints make it increasingly difficult for scientists to save a sufficient amount of raw simulation data to persistent storage. One potential solution is to change the data analysis pipeline from a post-process centric to a concurrent approach based... | 2012-01-01 | |
| 9 |
 | Pascucci, Valerio | Computing morse-smale complexes with accurate geometry | Topological techniques have proven highly successful in analyzing and visualizing scientific data. As a result, significant efforts have been made to compute structures like the Morse-Smale complex as robustly and efficiently as possible. However, the resulting algorithms, while topologically consis... | 2012-01-01 | |
| 10 |
 | Berzins, Martin | DAG-based software frameworks for PDEs | The task-based approach to software and parallelism is well-known and has been proposed as a potential candidate, named the silver model, for exas-cale software. This approach is not yet widely used in the large-scale multi-core parallel computing of complex systems of partial differential equations... | 2012-01-01 | |
| 11 |
 | Berzins, Martin | Data and range-bounded polynomials in ENO methods | Essentially Non-Oscillatory (ENO) methods and Weighted Essentially Non- Oscillatory (WENO) methods are of fundamental importance in the numerical solution of hyperbolic equations. A key property of such equations is that the solution must remain positive or lie between bounds. A modification of the ... | 2012-01-01 | |
| 12 |
 | Hansen, Charles D. | Design of 2D time-varying vector fields | Design of time-varying vector fields, i.e., vector fields that can change over time, has a wide variety of important applications in computer graphics. Existing vector field design techniques do not address time-varying vector fields. In this paper, we present a framework for the design of time-vary... | 2012-01-01 | |
| 13 |
 | Kasera, Sneha K. | Detecting receiver attacks in VRTI-based device free localization | Variance-based Radio Tomographic Imaging (VRTI) is an emerging technology that locates moving objects in areas surrounded by simple and inexpensive wireless sensor nodes. VRTI uses human motion induced variation in RSS and spatial correlation between link variations to locate and track people. An ar... | 2012-01-01 | |
| 14 |
 | Pascucci, Valerio | Efficient data restructuring and aggregation for I/O acceleration in PIDX | Hierarchical, multiresolution data representations enable interactive analysis and visualization of large-scale simulations. One promising application of these techniques is to store high performance computing simulation output in a hierarchical Z (HZ) ordering that translates data from a Cartesian ... | 2012-01-01 | |
| 15 |
 | Venkatasubramanian, Suresh | Efficient protocols for distributed classification and optimization | A recent paper [1] proposes a general model for distributed learning that bounds the communication required for learning classifiers with e error on linearly separable data adversarially distributed across nodes. In this work, we develop key improvements and extensions to this basic model. Our first... | 2012-01-01 | |
| 16 |
 | Sudan, Kshitij | Efficient scrub mechanisms for error-prone emerging memories | Many memory cell technologies are being considered as possible replacements for DRAM and Flash technologies, both of which are nearing their scaling limits. While these new cells (PCM, STT-RAM, FeRAM, etc.) promise high density, better scaling, and non-volatility, they introduce new challenges. Solu... | 2012-01-01 | |
| 17 |
 | Kirby, Robert Michael II | ElVis: A system for the accurate and interactive visualization of high-order finite element solutions | This paper presents the Element Visualizer (ElVis), a new, open-source scientific visualization system for use with high order finite element solutions to PDEs in three dimensions. This system is designed to minimize visualization errors of these types of fields by querying the underlying finite ele... | 2012-01-01 | |
| 18 |
 | Thompson, William B. | Evaluating the accuracy of size perception in real and virtual environments | Accurate perception of the size of 3D objects depicted on 2D desktop displays is important for many applications. Whether users perceive objects depicted on a display to be the same size as comparable real world objects is not well understood. We propose using affordances judgments as a way of measu... | 2012-01-01 | |
| 19 |
 | Pascucci, Valerio | Exploring performance data with boxfish | The growth in size and complexity of scaling applications and the systems on which they run pose challenges in analyzing and improving their overall performance. With metrics coming from thousands or millions of processes, visualization techniques are necessary to make sense of the increasing amount... | 2012-01-01 | |
| 20 |
 | Pascucci, Valerio | Extreme-scale visual analytics | The September/October 2004 CG&A introduced the term visual analytics (VA) to the computer science literature.1 In 2005, an international advisory panel with representatives from academia, industry, and government defined VA as "the science of analytical reasoning facilitated by interactive visual in... | 2012-01-01 | |
| 21 |
 | Pascucci, Valerio | Flow visualization with quantified spatial and temporal errors using edge maps | Robust analysis of vector fields has been established as an important tool for deriving insights from the complex systems these fields model. Traditional analysis and visualization techniques rely primarily on computing streamlines through numerical integration. The inherent numerical errors of such... | 2012-01-01 | |
| 22 |
 | Hansen, Charles D. | FluoRender: An application of 2D image space methods for 3D and 4D confocal microscopy data visualization in neurobiology research | 2D image space methods are processing methods applied after the volumetric data are projected and rendered into the 2D image space, such as 2D filtering, tone mapping and compositing. In the application domain of volume visualization, most 2D image space methods can be carried out more efficiently t... | 2012-01-01 | |
| 23 |
 | Gopalakrishnan, Ganesh | Formal methods for surviving the jungle of heterogeneous parallelism | The parallel programming community will soon be entering the ‘jungle' of heterogeneous hardware and software. Unfortunately, we are not adequately preparing future programmers (today's students) to cope with the many challenges of heterogeneous concurrency, especially in their ability to rigorousl... | 2012-01-01 | |
| 24 |
 | Pascucci, Valerio | Generalized topological simplification of scalar fields on surfaces | We present a combinatorial algorithm for the general topological simplification of scalar fields on surfaces. Given a scalar field f, our algorithm generates a simplified field g that provably admits only critical points from a constrained subset of the singularities of f, while guaranteeing a small... | 2012-01-01 | |
| 25 |
 | Wan, Yong | Interactive extraction of neural structures with user-guided morphological diffusion | Extracting neural structures with their fine details fromconfocal volumes is essential to quantitative analysis in neurobiology research. Despite the abundance of various segmentation methods and tools, for complex neural structures, both manual and semi-automatic methods are ineffective either in f... | 2012-01-01 |