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263 full-text articles. Page 1 of 10.

Foss Big Data Storage Solution, Gary L. Jaffe 2014 California Polytechnic State University

Foss Big Data Storage Solution, Gary L. Jaffe

STEM Teacher and Researcher (STAR) Program Posters

Utilizing the AERO Institute as an IT test bed or “sandbox”, a small-agile development team will design, build, and test a data management storage system to support post processing of archived and in-flight data collected with the Piccolo flight control system and Compact Fiber Optic Sensing System (C-FOSS). Both systems are integrated on the APV3 aircraft, a small remote-operated vehicle. Due to the amount of data collected from C-FOSS, a system will be designed to sort and organize large data sets. An open-source database will be explored as a viable solution to manage large data loads and provide multi-cluster system ...


Coel: A Web-Based Chemistry Simulation Framework, Peter Banda, Drew Blount, Christof Teuscher 2014 Portland State University

Coel: A Web-Based Chemistry Simulation Framework, Peter Banda, Drew Blount, Christof Teuscher

Computer Science Faculty Publications and Presentations

The chemical reaction network (CRN) is a widely used formalism to describe macroscopic behavior of chemical systems. Available tools for CRN modelling and simulation require local access, installation, and often involve local file storage, which is susceptible to loss, lacks searchable structure, and does not support concurrency. Furthermore, simulations are often single-threaded, and user interfaces are non-trivial to use. Therefore there are significant hurdles to conducting efficient and collaborative chemical research. In this paper, we introduce a new enterprise chemistry simulation framework, COEL, which addresses these issues. COEL is the first web-based framework of its kind. A visually pleasing and ...


Thermal Numerical Analysis Of Vertical Heat Extraction Systems In Landfills, Michael Thomas Onnen 2014 California Polytechnic State University

Thermal Numerical Analysis Of Vertical Heat Extraction Systems In Landfills, Michael Thomas Onnen

Master's Theses and Project Reports

An investigation was conducted to determine the response of landfills to the operation of a vertical ground source heat pump (i.e., heat extraction system, HES). Elevated landfill temperatures, reported various researchers, impact the engineering performance of landfill systems. A numerical model was developed to analyze the influence of vertical HES operation on landfills as a function of climate and operational conditions.

A 1-D model of the vertical profile of a landfill was developed to approximate fluid temperatures in the HES. A 2-D model was then analyzed over a 40 year time period using the approximate fluid temperatures to determine ...


Autonomous Competitor, Josh B. Porter 2014 California Polytechnic State University

Autonomous Competitor, Josh B. Porter

Computer Engineering

A description of a fully autonomous, golf ball rolling, RoboRodentia 2014 competitor made with stepper motors, photodiodes, a servo and an Ardunio Uno.


Looped: Ios Application, Barbara Alejandra Wong, Lia Zadoyan 2014 California Polytechnic State University

Looped: Ios Application, Barbara Alejandra Wong, Lia Zadoyan

Computer Engineering

Looped is a crowd-sourced music-making iOS application. It is designed to bring friends together through creating melodies by looping mp3 samples. A user will choose a sound from the Looped sound database, loop that sound however he or she chooses, and then post it to their friends. The next user can then pick another sound, and loop that sound on top of the previously posted loop, creating an overlay of sound samples. The sound database is comprised of mp3’s provided by the creators of Patatap. Patatap is a simple online interface for playing sounds with your computer keyboard.


Surface Reconstruction Using Differential Invariant Signatures, Sophors Khut 2014 Macalester College

Surface Reconstruction Using Differential Invariant Signatures, Sophors Khut

Mathematics, Statistics, and Computer Science Honors Projects

This thesis addresses the problem of reassembling a broken surface. Three di- mensional curve matching is used to determine shared edges of broken pieces. In practice, these pieces may have different orientation and position in space, so edges cannot be directly compared. Instead, a differential invariant signature is used to make the comparison. A similarity score between edge signatures determines if two pieces share an edge. The Procrustes algorithm is applied to find the translations and rotations that best fit shared edges. The method is implemented in Matlab, and tested on a broken spherical surface.


Calculation And Experimental Verification Of Longitudinal Spatial Hole Burning In High-Power Semiconductor Lasers, Ting Hao 2014 Rose-Hulman Institute of Technology

Calculation And Experimental Verification Of Longitudinal Spatial Hole Burning In High-Power Semiconductor Lasers, Ting Hao

Graduate Theses - Physics and Optical Engineering

Longitudinal spatial hole burning (LSHB) is believed to be one of the limiting factors in scaling the output power of high-power semiconductor lasers. In this work, a self-consistent simulation of LSHB was performed to investigate the non-uniform longitudinal photon density distribution, carrier density distribution, and gain distribution in a high-power semiconductor laser. The calculation is based on a modification to the semiconductor laser rate equations and solved using a finite difference approach, with Newton’s method employed to numerically solve the differential equations. The impact of LSHB on output power was analyzed with different parameters, including injection current, cavity length ...


Emitter Localization And Compressed Sensing: A Low Cost Design Using Coarse Direction Finding Antennas, Andrew Raymond Wagner 2014 Rose-Hulman Institute of Technology

Emitter Localization And Compressed Sensing: A Low Cost Design Using Coarse Direction Finding Antennas, Andrew Raymond Wagner

Graduate Theses - Engineering Management

Research has been conducted to determine the location of uncooperative radio-frequency (RF) emitters, using low cost sensors employing broadband, low directivity antennas. Comparably lowered accuracy and longer response time may be appropriate trade-offs for size, weight, and power (SWAP). These sensors can then be deployed on numerous testbeds, and algorithms may take advantage of the reconfigurable, distributive network of sensors to precisely determine the location. To conduct this research, a network of three reconfigurable sensors, equipped for emitting and receiving RF signals, was designed based on Universal Software Radio Peripheral (USRP™) technology. This thesis details the experiments conducted and the ...


Graphics Processing Unit Bloom Filters: Classical And Probabilistic, Joshua Michael Pyle 2014 University of Tennessee, Knoxville

Graphics Processing Unit Bloom Filters: Classical And Probabilistic, Joshua Michael Pyle

Masters Theses

Graphics Processing Units (GPUs) have been used to enhance the speed and efficiency of both data structures and algorithms alike. A common data structure used in Computer Science is the Bloom Filter, which is used in many types of applications including databases and security logging. The Bloom Filter is a lossy data structure that uses several hash functions to store keys into a bit array. A novel, new Bloom Filter meant for use in internet traffic detection called the Probabilistic Bloom Filter has recently been developed. In practice, this new Bloom Filter typically makes use of more hash functions than ...


Modelling Risk Dependencies And Propagation In Supply Chains, Leila Morteza Beigi 2014 McMaster University

Modelling Risk Dependencies And Propagation In Supply Chains, Leila Morteza Beigi

Open Access Dissertations and Theses

Today's highly integrated supply chains are exposed to various types of risks which disrupt the normal flow of goods or services within a supply chain network. Since most of these individual risks are interconnected, a mitigation strategy to tackle one risk may result in the exacerbation of another.

Risk dependencies have been modelled using two approaches in the financial insurance literature : (i) random variables, and (ii) copulas. In this dissertation these studies are reviewed and extended. Also, applications for these models for different supply chain network configurations are presented. Then, a Poisson process model for risk propagation is proposed ...


Multilevel Method For Turbulence Energy Spectrum Estimation By Compressive Sampling, Gudmundur F. Adalsteinsson 2014 McMaster University

Multilevel Method For Turbulence Energy Spectrum Estimation By Compressive Sampling, Gudmundur F. Adalsteinsson

Open Access Dissertations and Theses

Recent developments in signal processing called Compressive Sampling (CS) show that the measurement and reconstruction of sparse signals often requires fewer samples than is estimated by the sampling theorem. CS is a combination of a linear sampling scheme and a reconstruction method and, typically, the signal is assumed to be sparse, compressible, or having a prior distribution, with the reconstruction error measured in the \ell^2 norm. This thesis investigates the application of CS to turbulence signals, particularly for estimating some statistics or nonlinear functions of the signals. The main original research result of the thesis is a proposed method ...


Electromechanical & Navigation Systems For A Lawn Mower (Ariens), John Arakaki, Asa Eckert-Erdheim, Mark Giolando, Silas Hughes, John Paton, Matt Rush 2014 Olin College of Engineering

Electromechanical & Navigation Systems For A Lawn Mower (Ariens), John Arakaki, Asa Eckert-Erdheim, Mark Giolando, Silas Hughes, John Paton, Matt Rush

2014 SCOPE Projects

The Project - Integrate electromechanical and navigation systems into an Ariens lawn mower to create a research and development platform.

What It Does - Given a human defined boundary on flat ground, the mower plans an aesthetic cut path covering the defined region, follows the path, and stays within the boundary.


Cal Poly Library Of Pyroprints: Quality Control Analysis And Web Development, Chase Ricketts 2014 California Polytechnic State University

Cal Poly Library Of Pyroprints: Quality Control Analysis And Web Development, Chase Ricketts

Computer Science

No abstract provided.


Is Vehicle Characterization In Accordance With Standard Test Procedures A Necessary Prerequisite For Validating Computer Models Of A Test Vehicle?, Michael Hall 2014 Dublin Institute of Technology

Is Vehicle Characterization In Accordance With Standard Test Procedures A Necessary Prerequisite For Validating Computer Models Of A Test Vehicle?, Michael Hall

Masters

Vehicle characterization is the process by which a particular vehicle’s inherent dynamic behavior is classified by measuring its response to certain command inputs under standard test conditions. Such information is required when comparing its performance to that of other vehicles in response to the same test event and it is also used to authenticate computer models of the test vehicle. The aim of this research was to determine whether vehicle characterization is possible using data from non- standard tests and to judge whether such data can also be used for the purpose of validating a computer model of the ...


Numerical Simulation Of Liquid-Solid Circulating Fluidized Beds, Abbas Dadashi 2014 Western University

Numerical Simulation Of Liquid-Solid Circulating Fluidized Beds, Abbas Dadashi

University of Western Ontario - Electronic Thesis and Dissertation Repository

Liquid-solid circulating fluidized bed (LSCFB) reactors are obtaining extensive attraction in the extraction process of functional proteins from industrial broth. A typical LSCFB is comprised of a riser, a downcomer, a liquid-solid separator, a top solids-return pipe and a bottom solids-return pipe. In light of the literature review conducted in this research, a detailed modeling of the protein extraction using an LSCFB ion-exchange system requires a microscopic study including hydrodynamic field, mass transfer and kinetics reactions.

A computational fluid dynamics (CFD) model was developed to simulate the hydrodynamics of the two phase flow in an LSCFB riser. The model is ...


Citations Of Publications, Wojciech M. Budzianowski 2014 SelectedWorks

Citations Of Publications, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Tematyka Prac Doktorskich, Wojciech M. Budzianowski 2014 SelectedWorks

Tematyka Prac Doktorskich, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Tematyka Prac Dyplomowych Dla Studentów Wydziału Mechaniczno-Energetycznego Pwr., Wojciech M. Budzianowski 2014 SelectedWorks

Tematyka Prac Dyplomowych Dla Studentów Wydziału Mechaniczno-Energetycznego Pwr., Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Thermal Optimization Of Flat Plate Pcm Capsules In Natural Convection Solar Water Heating Systems, Padideh Sarafraz 2014 McMaster University

Thermal Optimization Of Flat Plate Pcm Capsules In Natural Convection Solar Water Heating Systems, Padideh Sarafraz

Open Access Dissertations and Theses

This research is concerned with CFD modelling of thermal energy storage tanks containing water with submerged phase change materials (PCM). Under appropriate operating conditions, the energy density of this hybrid system can be significantly increased (two to five times) relative to a system containing water only. However, due to low thermal conductivity of phase change materials, the geometry and configurations of the PCM capsules in the tank should be optimized. This research focused on the assessment of flat plate PCM modules submerged in a rectangular water tank. The encapsulation of the PCM within the slender flat plates resulted in a ...


Gradient-Based Cuckoo Search For Global Optimization, Seif-Eddeen K. Fateen, Adrian Bonilla-Petriciolet 2014 SelectedWorks

Gradient-Based Cuckoo Search For Global Optimization, Seif-Eddeen K. Fateen, Adrian Bonilla-Petriciolet

Seif-Eddeen K Fateen

No abstract provided.


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