A Simple Correlation For Estimation Of Economic Thickness Of Thermal Insulation For Process Piping And Equipment, Ali Ali
No abstract provided.
A Cfd Model Using Pbm For Cellulase Production, 2009 Sherbrooke University
A Cfd Model Using Pbm For Cellulase Production, Abdelfettah Bannari, Rachid Bannari, Brahim Selma, Pierre Proulx
Abdelfettah Bannari Ph.D
Cellulase production provides a catalyst for cellulose hydrolysis to glucose, to be used for eventual production of ethanol. In this work a CFD model is proposed to describe the kinetic for cellulase production using the population balance modeling (PBM) in order to predict the accurate mass transfer. The PBM equation is solved using the Class Method (CM). The bubble sizes are approximated through a discrete number of size, including transport, diﬀerent bubble phenomena and the consumption of oxygen. Good agreement is obtained between the results and experimental data. The model is solved using the open source package OpenFoam.
Whole-Mind Teaching And Learning: A Case Study In Engineering, 2009 University of North Florida
Whole-Mind Teaching And Learning: A Case Study In Engineering, Terry Smith, Susan Vasana
Terry L. Smith
Whole-mind Teaching and Learning (WmTL) activities and a case study on WmTL practices are presented in this article. The traditional logical/analytical emphasis of engineering curricula is complemented and enhanced with an intuitive/holistic approach, which implements the following practices: apply art principles; use intuition in design and in results checking; balance horizontal and vertical thinking in problem-solving; and allow time for solitary thinking in concert with supportive/stimulating group discussion. Practice in the case study was conducted by using creativity as one of the criteria in evaluating course projects. Other approaches include a second chance for mid-term exams and ...
Toward Superlensing With Metal-Dielectric Composites And Multilayers, 2009 University of Michigan - Ann Arbor
Toward Superlensing With Metal-Dielectric Composites And Multilayers, Rasmus Nielsen, Mark Thoreson, Weiqiang Chen, Anders Kristensen, Jørn Hvam, Vladimir Shalaev, Alexandra Boltasseva
We report on the fabrication of two types of adjustable, near-field superlens designs: metal–dielectric composites and metal–dielectric multilayer films. We fabricated a variety of films with different materials, thicknesses and compositions. These samples were characterized physically and optically to determine their film composition, quality, and optical responses. Our results on metal–dielectric composites indicate that although the real part of the effective permittivity generally follows effective medium theory predictions, the imaginary part does not and substantially higher losses are observed. Going forward, it appears that multilayer metal–dielectric designs are more suitable for sub-diffraction imaging applications because they ...
Wpi Precision Personnel Location System: Rapid Deployment Antenna System And Sensor Fusion For 3d Precision Location, 2009 Worcester Polytechnic Institute
Wpi Precision Personnel Location System: Rapid Deployment Antenna System And Sensor Fusion For 3d Precision Location, Andrew Cavanaugh, Matthew Lowe, David Cyganski, James Duckworth
R. James Duckworth
An RF-based system is being developed for tracking
of ﬁrst responders and other personnel in indoor environments. The system assumes no existing infrastructure, no
pre-characterization of the area of operation and is designed
for spectral compliance and rapid deployment. The RF 3D
location system, based on a recently developed multicarrier
signal fusion algorithm, has previously demonstrated submeter positioning accuracy of a transmitter, even in difﬁcult
indoor environments with high multi-path, with all receivers
placed outside the building. However, the current version of
the system requires a set of 12 to 16 antennas be distributed
outside three to four sides of ...
Hybrid Approach For Brain Tumor Segmentation In Magnetic Resonance Images Using Cellular Neural Networks And Optimization Techniques, 2009 University of Nevada, Las Vegas
Hybrid Approach For Brain Tumor Segmentation In Magnetic Resonance Images Using Cellular Neural Networks And Optimization Techniques, D. Selvathi, Henry Selvaraj, S. Thamarai Selvi
Tumor segmentation from brain magnetic resonance image data is an important but time consuming task performed manually by medical experts. Automating this process is challenging due to the high diversity in appearance of tumor tissue among different patients and in many cases, similarity between tumor and normal tissue. This paper deals with an efficient segmentation algorithm for extracting brain tumors in magnetic resonance images using Cellular Neural Networks (CNN). Learning CNN templates values are formulated as an optimization problem. The template coefficients (weights) of an CNN which will give a desired performance, can be derived by learning genetic algorithm and ...
Prediction Of The Maximum Heat Transfer Coefficient Between A Horizontal Tube And Gas–Solid Fluidized Beds, 2009 University of Tehran
Prediction Of The Maximum Heat Transfer Coefficient Between A Horizontal Tube And Gas–Solid Fluidized Beds, Nima Masoumifard, Navid Mostoufi, Rahmat Sotudeh-Gharebagh
Average heat transfer coefficient between a horizontal tube and fluidized bed reaches a maximum at an optimum superficial gas velocity. Prediction of the optimum superficial gas velocity and maximum heat transfer coefficient in gas-solid fluidized beds was obtained based on a cluster based mechanistic model which properly takes into account the thermal and fluid dynamic properties of the solids and the fluidizing gas. Experiments were carried out in a 15 cm diameter fluidized bed using 280, 490 and 750 μm sand particles fluidized by air with a 8 mm diameter horizontal tube immersed in the bed. The predicted values were ...
Key Establishment For Layered Group-Based Wireless Sensor Networks, 2009 University of Tennessee - Knoxville
Key Establishment For Layered Group-Based Wireless Sensor Networks, Xueping Li, Dengfeng Yang, Rapinder Sawhney
Establishing pairwise keys for sensors is crucial to secure communications in Wireless Sensor Networks (WSNs). Several key pre-distribution schemes have been proposed to establish pairwise keys, but they are not scalable and suffer from a dramatic degradation of security when the number of compromised sensor exceeds a threshold. In this paper, we propose a Layered Group-based Key Establishment (LGKE) scheme, in which a logic top layer ensures the scalability through an Exclusion Basic System (EBS) technique while a logic low layer adopts a group-based key preload scheme to ensure the security. The security analysis and quantitative evaluation show the superiority ...
Monitoring In A Predator-Prey Systems Via A Class Of High Order Observer Design, 2009 Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV-IPN)
Monitoring In A Predator-Prey Systems Via A Class Of High Order Observer Design, Ricardo Aguilar-López, Rafael Martinez-Guerra, Juan L. Mata-Machuca
The goal of this work is the monitoring of the corresponding species in a class of predator-prey systems, this issue is important from the ecology point of view to analyze the population dynamics. The above is done via a nonlinear observer design which contains on its structure a high order polynomial form of the estimation error. A theoretical frame is provided in order to show the convergence characteristics of the proposed observer, where it can be concluded that the performance of the observer is improved as the order of the polynomial is high. The proposed methodology is applied to a ...
Implications Of Climate Change On Idaho’S Water Resources: A Case Study In The Snake River And Salmon River Basins, 2009 Boise State University
Implications Of Climate Change On Idaho’S Water Resources: A Case Study In The Snake River And Salmon River Basins, S. Sinnathamby, M. Muche, V. Sridhar, X. Jin
No abstract provided.
Using A Majority Voting Hardware Method On Weather Information To Increase The Accuracy Of Decision Making Methods, 2009 University of Arak,Iran
Using A Majority Voting Hardware Method On Weather Information To Increase The Accuracy Of Decision Making Methods, Sanaz Asadinia
No abstract provided.
Numerical Study Of Thermal Non-Equilibrium In Supersonic And Subsonic Air Icp, International Journal Of Heat And Mass Transfer, Mbark El Morsli, Pierre Proulx, Abdelfettah Bannari
Abdelfettah Bannari Ph.D
No abstract provided.
Equivalent Accelerated Life Testing Plans For Log-Location-Scale Distributions, 2009 University of Tennessee - Knoxville
Equivalent Accelerated Life Testing Plans For Log-Location-Scale Distributions, Haitao Liao, Elsayed Elsayed
Accelerated life testing (ALT) is widely used to determine the failure time distribution of a product and the associated life-stress relationship in order to predict the product’s reliability under normal operating conditions. Many types of stress loadings such as constant-stress, step-stress and cyclic-stress can be utilized when conducting ALT. Extensive research has been conducted on the analysis of ALT data obtained under a specified stress loading. However, the equivalency of ALT experiments involving different stress loadings has not been investigated. In this article, a log-location-scale distribution under Type I censoring is considered in planning ALT. An idea is provided ...
Evaluation Of The Stress-Energy Methodology To Predict Transmitted Shock Through Expanded Foam Cushions, 2009 California Polytechnic State University, San Luis Obispo
Evaluation Of The Stress-Energy Methodology To Predict Transmitted Shock Through Expanded Foam Cushions, Eric Olsen, Jay Singh, Lina Ignatova
Mechanical stresses experienced by packages in the distribution environment include shock and vibration amongst several others. The destructive effects of these hazards can typically be restricted by using cushioning materials to help protect fragile goods during distribution. ASTM D1596 is the conventional standard used to determine shock absorbing performance of a cushioning material for a given combination of static loading, thickness, and drop height. This industry-accepted standard, however, requires significant amounts of transmitted shock data and can be expensive with respect to costs associated with testing and materials amongst others. Alternate stress-energy-based methodologies, developed in the past decade, recommending a ...
Accommodating Innovation In Building Regulation: Lessons And Challenges, 2009 Worcester Polytechnic Institute
Accommodating Innovation In Building Regulation: Lessons And Challenges, Brian Meacham
Brian J Meacham
No abstract provided.
Developing A Decision-Making Framework For Web Service Security Profiles: A Design-Science Paradigm, 2009 The University of Jordan
Developing A Decision-Making Framework For Web Service Security Profiles: A Design-Science Paradigm, Mutaz Al-Debei, Bachar Alrouh, Gheorghita Ghinea
Dr. Mutaz M. Al-Debei
In this paper, we provide a novel analytical hierarchy process decision-making framework for Web service security profiles. This framework aids in solving the dilemma of which Web service security profile is most fitting in a particular situation. This is because the developed framework allows architects and developers to take informed decisions following a systematic and manageable approach. In developing the framework, we followed the design-science research paradigm within which we incorporated a number of laboratory experiments.
Model Omnibus Privacy Statute, 2009 Burton Law FirmS
Model Omnibus Privacy Statute, 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 ...
Coke Formation Reduction In The Steam Cracking Of Naphtha On Industrial Alloy Steels Using Sulfur-Based Inhibitors, Darioush Salari, Aligholi Niaei, Mohammad Reza Shoja, Reza Nabavi
Seyed Reza nabavi
Coke formation reduction during naphtha pyrolysis was investigated using dimethyl disulfide (DMDS) and carbon disulfide (CS2) as inhibitors with different feed stocks. Different industrial nickel alloy steels such as stainless steel 304 and 316 (SS304, SS316), HP-modified (HP-mod) and HP-micro (HP-mic) were used as coupons in a quartz cylindrical reactor for coke formation studies. Coke formation significantly reduced in the presence of the additives or using feeds with more sulfur compounds. It was revealed that HP-mic alloy has the least coke deposition rate between other alloys. Scanning electron microscope (SEM) and energy dispersive X-ray analyzer (EDAX) were used for ...
Dynamics Of Individual Molecules Of Linear Polyethylene Liquids Under Shear: Atomistic Simulation And Comparison With A Free-Draining Bead-Rod Chain, 2009 University of Tennessee - Knoxville
Dynamics Of Individual Molecules Of Linear Polyethylene Liquids Under Shear: Atomistic Simulation And Comparison With A Free-Draining Bead-Rod Chain, David Keffer, J. Kim, B. Edwards, B. Khomami
Nonequilibrium molecular dynamics (NEMD) simulations of a dense liquid composed of linear polyethylene chains were performed to investigate the chain dynamics under shear. Brownian dynamics (BD) simulations of a freely jointed chain with equivalent contour length were also performed in the case of a dilute solution. This allowed for a close comparison of the chain dynamics of similar molecules for two very different types of liquids. Both simulations exhibited a distribution of the end-to-end vector, |Rete|, with Gaussian behavior at low Weissenberg number (Wi). At high Wi, the NEMD distribution was bimodal, with two peaks associated with rotation and ...
High Performance Ac Drives, 2009 Aligarh Muslim University
High Performance Ac Drives, Mukhtar Ahmad
No abstract provided.