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Biomedical Engineering and Bioengineering Commons

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A Comparative Analysis Of Haptic And Eeg Devices For Evaluation And Training Of Post-Stroke Patients Within A Virtual Environment, Gregory Nicholas Ranky 2010 New Jersey Institute of Technology

A Comparative Analysis Of Haptic And Eeg Devices For Evaluation And Training Of Post-Stroke Patients Within A Virtual Environment, Gregory Nicholas Ranky

Theses

Virtual Rehabilitation benefits from the usage of interfaces other than the mouse and keyboard, but also possess disadvantages: haptic peripherals can utilize the subject's hand to provide position information or joint angles, and allow direct training for specific movements; but can also place unneeded strain on the limbs; brain-machine interfaces (BMI) can provide direct connections from the user to external hardware or software, but are currently inaccurate for the full diversity of user movements in daily life and require invasive surgery to implement. A compromise between these two extremes is a BMI that can be adapted to specific users ...


Inverse Scattering And Acousto-Optic Imaging, Giullaume Bal, John C. Schotland 2010 Columbia University

Inverse Scattering And Acousto-Optic Imaging, Giullaume Bal, John C. Schotland

Departmental Papers (BE)

We propose a tomographic method to reconstruct the optical properties of a highly scattering medium from incoherent acousto-optic measurements. The method is based on the solution to an inverse problem for the diffusion equation and makes use of the principle of interior control of boundary measurements by an external wave field.


Life Cycle Greenhouse Gas Emissions From Biofuels: Variability, Uncertainty, And Steps Toward Accurate Regulation, Adam J. Liska, Bruce E. Dale 2010 University of Nebraska-Lincoln,

Life Cycle Greenhouse Gas Emissions From Biofuels: Variability, Uncertainty, And Steps Toward Accurate Regulation, Adam J. Liska, Bruce E. Dale

Adam Liska Papers

a)Variability in life cycle greenhouse gas (GHG) emissions from corn-ethanol:
biorefineries
cropping systems
co-product feeding to livestock


b) EPA regulation of life cycle GHG emissions from biofuels & use of life cycle analysis (LCA):
uncertainties & inaccuracies
indirect effects


c) Building accurate knowledge infrastructure, theory, and research teams for accurate LCA methods for biofuels


Cuda Implementation Of A Navier-Stokes Solver On Multi-Gpu Desktop Platforms For Incompressible Flows, Julien C. Thibault, Inanc Senocak 2010 Boise State University

Cuda Implementation Of A Navier-Stokes Solver On Multi-Gpu Desktop Platforms For Incompressible Flows, Julien C. Thibault, Inanc Senocak

Inanc Senocak

Graphics processor units (GPU) that are traditionally designed for graphics rendering have emerged as massively-parallel "co-processors" to the central processing unit (CPU). Small-footprint desktop supercomputers with hundreds of cores that can deliver teraflops peak performance at the price of conventional workstations have been realized. A computational fluid dynamics (CFD) simulation capability with rapid computational turnaround time has the potential to transform engineering analysis and design optimization procedures. We describe the implementation of a Navier-Stokes solver for incompressible fluid flow using desktop platforms equipped with multi-GPUs. Specifically, NVIDIA’s Compute Unified Device Architecture (CUDA) programming model is used to implement the ...


Stochastic Event Reconstruction Of Atmospheric Contaminant Dispersion Using Bayesian Inference, Inanc Senocak, Nicolas W. Hengartner, Margaret B. Short, W. Brent Daniel 2010 Boise State University

Stochastic Event Reconstruction Of Atmospheric Contaminant Dispersion Using Bayesian Inference, Inanc Senocak, Nicolas W. Hengartner, Margaret B. Short, W. Brent Daniel

Inanc Senocak

Environmental sensors have been deployed in various cities for early detection of contaminant releases into the atmosphere. Event reconstruction and improved dispersion modeling capabilities are needed to estimate the extent of contamination, which is required to implement effective strategies in emergency management. To this end, a stochastic event reconstruction capability that can process information from an environmental sensor network is developed. A probability model is proposed to take into account both zero and non-zero concentration measurements that can be available from a sensor network because of a sensor’s specified limit of detection. The inference is based on the Bayesian ...


A Multi-Variable Analysis Of Transient Near-Wall Haemodynamics In A Stented Coronary Artery, Jonathan Murphy, Fergal Boyle 2010 Technological University Dublin

A Multi-Variable Analysis Of Transient Near-Wall Haemodynamics In A Stented Coronary Artery, Jonathan Murphy, Fergal Boyle

Conference Papers

No abstract provided.


Real-Time Heart Model For Implantable Cardiac Device Validation And Verification, Zhihao Jiang, Miroslav Pajic, Allison T. Connolly, Sanjay Dixit, Rahul Mangharam 2010 University of Pennsylvania

Real-Time Heart Model For Implantable Cardiac Device Validation And Verification, Zhihao Jiang, Miroslav Pajic, Allison T. Connolly, Sanjay Dixit, Rahul Mangharam

Technical Reports (ESE)

Designing bug-free medical device software is dif- ficult, especially in complex implantable devices that may be used in unanticipated contexts. Safety recalls of pacemakers and implantable cardioverter defibrillators due to firmware problems between 1990 and 2000 affected over 200,000 devices, comprising 41% of the devices recalled and are increasing in frequency. There is currently no formal methodology or open experimental platform to validate and verify the correct operation of medical device software. To this effect, a real-time Virtual Heart Model (VHM) has been developed to model the electrophysiological operation of the functioning (i.e. during normal sinus rhythm) and ...


Single-Scattering Optical Tomography: Simultaneous Reconstruction Of Scattering And Absorption, Lucia Florescu, Vadim A. Markel, John C. Schotland 2010 University of Pennsylvania

Single-Scattering Optical Tomography: Simultaneous Reconstruction Of Scattering And Absorption, Lucia Florescu, Vadim A. Markel, John C. Schotland

Departmental Papers (BE)

We report theory and numerical simulations that demonstrate the feasibility of simultaneous reconstruction of the three-dimensional scattering and absorption coefficients of a mesoscopic system using angularly resolved measurements of scattered light. Image reconstruction is based on the inversion of a generalized (broken ray) Radon transform relating the scattering and absorption coefficients of the medium to angularly resolved intensity measurements. Although the single-scattering approximation to the radiative transport equation (RTE) is used to devise the image reconstruction method, there is no assumption that only singly scattered light is measured. That is, no physical mechanism for separating single-scattered photons from the rest ...


Cultured Alveolar Epithelial Cells From Septic Rats Mimic In Vivo Septic Lung, Taylor Sitarik Cohen, Gladys Gray Lawrence, Susan S. Margulies 2010 University of Pennsylvania

Cultured Alveolar Epithelial Cells From Septic Rats Mimic In Vivo Septic Lung, Taylor Sitarik Cohen, Gladys Gray Lawrence, Susan S. Margulies

Departmental Papers (BE)

Sepsis results in the formation of pulmonary edema by increasing in epithelial permeability. Therefore we hypothesized that alveolar epithelial cells isolated from septic animals develop tight junctions with different protein composition and reduced barrier function relative to alveolar epithelial cells from healthy animals. Male rats (200–300g) were sacrificed 24 hours after cecal ligation and double puncture (2CLP) or sham surgery. Alveolar epithelial cells were isolated and plated on fibronectin-coated flexible membranes or permeable, non-flexible transwell substrates. After a 5 day culture period, cells were either lysed for western analysis of tight junction protein expressin (claudin 3, 4, 5, 7 ...


New Generation Of The Dental Posts For Endodontic Application., Ahmed A. Madfa 2010 Department of Conservative Dentistry, Faculty of Dentistry, University of Thamar, Thamar, Yemen

New Generation Of The Dental Posts For Endodontic Application., Ahmed A. Madfa

Ahmed A. Madfa

Fabricated multilayer dental post with the functionally graded design is a novel product that exhibits graded properties varied from coronal to apical parts of the tooth. The new dental post definitely performs better than posts available in the market and improves the quality of human life


The Variational Iteration Method Which Should Be Followed, Ji-Huan He, Guo-Cheng Wu, F. Austin 2010 Donghua University

The Variational Iteration Method Which Should Be Followed, Ji-Huan He, Guo-Cheng Wu, F. Austin

Ji-Huan He

This paper proposes three standard variational iteration algorithms for solving differential equations, integro-differential equations, fractional differential equations, fractal differential equations, differential-difference equations and fractional/fractal differential-difference equations. The physical interpretations of the fractional calculus and the fractal derivative are given and an application to discrete lattice equations is discussed. The paper then examines the acceleration of some iteration formulae with particular emphasis being placed on the exponential Padé approximant that is suggested for solitary solutions and the sinusoidal Padé approximant that is usually used for periodic and compacton solutions. The paper points out that there may not be any physical ...


Model Omnibus Privacy Statute, Sam S. Han Ph.D. 2010 Burton Law FirmS

Model Omnibus Privacy Statute, Sam S. Han Ph.D.

Sam Han

One of today’s major concerns is how easily digital information can be copied and disseminated. Thus, when one’s private information becomes publicly available in digital format, that information can be readily duplicated and distributed across the globe within seconds. If the disseminated information includes credit card numbers or Social Security numbers, then there is a heightened exposure to identity theft and a host of other privacy-related crimes.

Given the existence of such a digital landmine, laws have been promulgated for various sectors (e.g., financial, healthcare, government, etc.) to protect personally-identifiable information. However, due to differing needs of ...


Lai - Introduction To Continuum Mechanics نسخه اصلی کتاب مکانیک محیط پیوسته ویرایش چهارم, Dr Alireza Zolfaghari 2010 Birjand University

Lai - Introduction To Continuum Mechanics نسخه اصلی کتاب مکانیک محیط پیوسته ویرایش چهارم, Dr Alireza Zolfaghari

Dr Alireza Zolfaghari

No abstract provided.


Reflections Of College Students Promoting Engineering Through Biomechanical Outreach Activities Indicate Dual Benefits, Kimberly Edginton Bigelow 2010 University of Dayton

Reflections Of College Students Promoting Engineering Through Biomechanical Outreach Activities Indicate Dual Benefits, Kimberly Edginton Bigelow

Mechanical and Aerospace Engineering Faculty Publications

Recent work by the National Academy of Engineering revealed that the public has a poor understanding of what engineers actually do on a day-to-day basis. This issue is compounded for non-traditional fields in engineering, such as biomechanical engineering. This is particularly problematic as such fields could draw interest from students not interested in traditional engineering careers, resulting in increased diversity.

To address this, mechanical engineering students taking an elective course, Biomechanical Engineering, were given an outreach assignment to teach at least one individual under the age of 18 about the field of biomechanical engineering through a hands-on activity. Students worked ...


Effect Of Magnetron Frequency On Heating Pattern In Domestic Oven, Sohan Birla, Krishnamoorthy Pitchai, Jeyamkondan Subbiah, David D. Jones 2010 University of Nebraska- Lincoln

Effect Of Magnetron Frequency On Heating Pattern In Domestic Oven, Sohan Birla, Krishnamoorthy Pitchai, Jeyamkondan Subbiah, David D. Jones

Conference Presentations and White Papers: Biological Systems Engineering

In this study a computer model was developed to simulate microwave heating of a model food with a range of magnetron frequencies. The range was decided upon performing the frequency spectrum analysis of microwave leakage from the microwave oven. Simulation results showed that the magnetron input as sinusoidal frequency from 2.44 GHz to 2.48 GHz generates different heating profiles. The simulated heating profiles were compared with experimental heating profiles obtained by using an IR camera. None of simulations with individual frequency exactly matches with experimental temperature profile. The closet match between simulated and observed temperature profiles was found ...


Heating Performance Assessment Of Domestic Microwave Ovens, Krishnamoorthy Pitchai, Sohan Birla, Jeyamkondan Subbiah, David D. Jones 2010 University of Nebraska at Lincoln

Heating Performance Assessment Of Domestic Microwave Ovens, Krishnamoorthy Pitchai, Sohan Birla, Jeyamkondan Subbiah, David D. Jones

Conference Presentations and White Papers: Biological Systems Engineering

Due to inherent nature of standing wave patterns of microwaves inside a cavity and dielectric properties of different components in a food, microwave heating leaves non-uniform distribution of energy inside the food volumetrically. Achieving heating uniformity plays critical role in improving the safety of microwave heated products. In this paper, we present a method for assessing heating uniformity within domestic microwave ovens. A custom designed container
was used to assess heating uniformity of a range of microwave ovens using IR camera. The study suggested that the best place to place food in a microwave oven is not at center but ...


Theory Of ‘Selectivity’ Of Label-Free Nanobiosensors – A Geometro-Physical Perspective, Pradeep R. Nair, Muhammad A. Alam 2010 Purdue University - Main Campus

Theory Of ‘Selectivity’ Of Label-Free Nanobiosensors – A Geometro-Physical Perspective, Pradeep R. Nair, Muhammad A. Alam

Birck and NCN Publications

Modern label-free biosensors are generally far more sensitive and require orders of magnitude less incubation time compared to their classical counterparts. However, a more important characteristic regarding the viability of this technology for applications in Genomics/Proteomics is defined by the ‘Selectivity’, i.e., the ability to concurrently and uniquely detect multiple target biomolecules in the presence of interfering species. Currently, there is no theory of Selectivity that allows optimization of competing factors and there are few experiments to probe this problem systematically. In this article, we use the elementary considerations of surface exclusion, diffusion limited transport, and void distribution ...


Reversible Addition - Fragmentation Chain Transfer In Microemulsions: Effect Of Chain Transfer Agent Aqueous Solubility, Jennifer M. O'Donnell, Eric W. Kaler 2010 University of Delaware

Reversible Addition - Fragmentation Chain Transfer In Microemulsions: Effect Of Chain Transfer Agent Aqueous Solubility, Jennifer M. O'Donnell, Eric W. Kaler

Jennifer M. Heinen

Microemulsion polymerizations are attractive for investigating compartmentalization effects in heterogeneous reversible addition - fragmentation chain transfer (RAFT) polymerizations because the propagating radicals are segregated into surfactant stabilized polymer particles, which drastically reduces the effects of biradical termination, Also, microemulsion polymerizations do not involve the large monomer droplets that are present in emulsion and miniemulsion polymerizations. RAFT microemulsion polymerizations of butyl aery late with a high water solubility chain transfer agent, methyl-2-(O-ethylxanthyl)propionate (MOEP), and a low water solubility chain transfer agent, methyl-2-(O-dodecylxanthyl)propionate (MODP), were investigated to determine the effect of chain transfer agent compartmentalization on the control of ...


Igf-I Releasing Plga Scaffolds For Growth Plate Regeneration, Sharath kumar Chinnakavanam Sundararaj 2010 University of Kentucky

Igf-I Releasing Plga Scaffolds For Growth Plate Regeneration, Sharath Kumar Chinnakavanam Sundararaj

University of Kentucky Master's Theses

Growth plate is a highly organized cartilaginous tissue found at the end of long bones and is responsible for longitudinal growth of the bones. Growth plate fracture leads to retarded growth and unequal limb length, which might have a lifelong effect on a person’s physical stature. This research is a tissue engineering approach for the treatment of growth plate injury. Insulin-like growth factor I (IGF-I), which can stimulate cartilage formation, was encapsulated within PLGA microspheres that were then used to form porous scaffolds. The release profile of the IGF-I from the PLGA scaffold showed a biphasic release pattern. In ...


Multiwall Carbon Nanotubes Alter The Thermal Profile And Antibiotic Elution Of Orthopaedic Bone Cement, Alison Carroll Tickle 2010 University of Kentucky

Multiwall Carbon Nanotubes Alter The Thermal Profile And Antibiotic Elution Of Orthopaedic Bone Cement, Alison Carroll Tickle

University of Kentucky Master's Theses

Multiwall carbon nanotubes (MWNTs) have extraordinary mechanical and thermal transport properties. They significantly improve the static and dynamic mechanical properties of acrylic orthopaedic bone cement when added to the dry cement polymer powder. Understanding the role MWNTs play on bone cement polymerization temperatures will lead to improved mechanical integrity of the cement-bone interface in joint arthroplasties. It was determined through thermal testing that MWNTs increased the polymerization time of the methylmethacrylate by 45-460% and decreased the peak exothermic temperature of bone cement with and without antibiotics. The flow of heat produced during polymerizing cement was reduced 25-85% with the addition ...


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