Digital Commons Network^™

Full Issue, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Geoengineering And International Law: The Search For Common Legal Ground, Ralph Bodle

Tulsa Law Review

No abstract provided.

Synthesis, Stabilization, And Characterization Of Metal Nanoparticles, Gregory White Ii

All Dissertations

Wet chemical synthesis techniques offer the ability to control various nanoparticle characteristics including size, shape, dispersibility in both aqueous and organic solvents, and tailored surface chemistries appropriate for different applications. Large quantities of stabilizing ligands or surfactants are often required during synthesis to achieve these nanoparticle characteristics. Unfortunately, excess reaction byproducts, surfactants, and ligands remaining in solution after nanoparticle synthesis can impede application, and therefore post-synthesis purification must be employed. A liquid-liquid solvent/anti-solvent pair (typically ethanol/toluene or ethanol/hexane for gold nanoparticles, GNPs) can be used to both purify and size-selectively fractionate hydrophobically modified nanoparticles. Alternatively, carbon dioxide may be used …

Dclone: Data Cloning In R, Péter Sólymos

The R Journal

The dclone R package contains low level functions for implementing maximum likelihood estimating procedures for complex models using data cloning and Bayesian Markov Chain Monte Carlo methods with support for JAGS, WinBUGS and OpenBUGS.

Universality Of Non-Ohmic Shunt Leakage In Thin-Film Solar Cells, Sourabh Dongaonkar, Jonathan D. Servaites, Grayson M. Ford, Stephen Loser, James E. Moore, Ryan M. Gelfand, Hooman Mohseni, Hugh W. Hillhouse, Rakesh Agrawal, Mark A. Ratner, Tobin J. Marks, Mark Lundstrom, Muhammad A. Alam

Birck and NCN Publications

We compare the dark current-voltage (IV) characteristics of three different thin-film solar cell types: hydrogenated amorphous silicon (a-Si:H) p-i-n cells, organic bulk heterojunction (BHJ) cells, and Cu(In,Ga)Se₂ (CIGS) cells. All three device types exhibit a significant shunt leakage current at low forward bias (V< ∼ 0.4) and reverse bias, which cannot be explained by the classical solar cell diode model. This parasitic shunt current exhibits non-Ohmic behavior, as opposed to the traditional constant shunt resistance model for photovoltaics. We show here that this shunt leakage (I_sh), across all three solar cell types considered, is characterized by the following common phenomenological features: (a) voltage symmetry about V = 0, (b) nonlinear (power law) voltage dependence, and (c) extremely weak temperature dependence. Based on this analysis, we provide a simple method of subtracting this shunt current component from …

Uncertainty Propagation In A Multiscale Model Of Nanocrystalline Plasticity, Marisol Koslowski, Alejandro Strachan

PRISM: NNSA Center for Prediction of Reliability, Integrity and Survivability of Microsystems

We characterize how uncertainties propagate across spatial and temporal scales in a physicsbased model of nanocrystalline plasticity of fcc metals. Our model combines molecular dynamics (MD) simulations to characterize atomic level processes that govern dislocation basedplastic deformation with a phase field approach to dislocation dynamics (PFDD) that describes how an ensemble of dislocations evolve and interact to determine the mechanical response of the material. We apply this approach to a nanocrystalline Ni specimen of interest in micro-electromechanical (MEMS) switches. Our approach enables us to quantify how internal stresses that result from the fabrication process affect the properties of dislocations (using …

The Role And Importance Of Cave Microclimate In The Sustainable Use And Management Of Show Caves, Chris R. De Freitas

KIP Articles

Cave microclimate is important in the study of cave flora and fauna, certain karst processes underground and hydrogeologic aspects of speleothems; thus an understanding of microclimat­ic processes is especially important in the management of show caves. Here, examples are drawn from researchon New Zea­land caves and examined in the context of sustainable cave use management practices. The work considers that the cave man­ager is concerned, firstly, withdefining the desired or optimal level or range of environmental conditions that should prevail and, secondly, withmaintaining them. To do this requires an appropriate and reliable monitoring system. It involves select­ing key indicators to …

Tangerine Avenue Retrofitting Project, Ni-Bin Chang, Martin Wanielista

BMP Trains Research and Publications

No abstract provided.

Using Gis For Measuring Transit Stop Accessibility Considering Actual Pedestrian Road Network, Mohamed A. Foda, Ahmed O. Osman

Journal of Public Transportation

Bus stops attain their importance to the transit service from being the main points of contact between the passenger and the bus. Considering spatial attributes, both the location and the spacing of bus stops significantly affect transit service performance and passenger satisfaction, as they influence travel time in addition to their role in ensuring reasonable accessibility. Knowing that every transit trip begins and ends with pedestrian travel, access to a bus stop is considered a critical factor for assessing the accessibility of the stop location. In this research, transit stop access coverage is estimated based on the actual pedestrian road …

Ingress/Egress Incidents Involving Wheelchair Users In A Fixed-Route Public Transit Environment, Karen L. Frost, Gina Bertocci, Sheryll Sison

Journal of Public Transportation

The objectives of this study were to characterize the ingress and egress activities of wheeled mobility device (WhMD) passengers using fixed-route large, accessible transit vehicles (LATVs), and to examine factors associated with incidents occurring on ramps. A retrospective review of public transit video surveillance footage of WhMDseated passengers accessing fixed-route LATVs was conducted. Ingress and egress activities were characterized based on travel conditions and characteristics of the WhMD and LATV ramp. Incidents were identified based on predetermined criteria, and chi-square analysis was performed to identify WhMD and/or ingress/egress characteristics associated with incidents. Video records of 250 WhMD trips were analyzed. …

Traffic Safety And City Public Transport System: Case Study Of Bengaluru, India, P. S. Kharola, Geetam Tiwari, Dinesh Mohan

Journal of Public Transportation

Vehicle crashes are a major concern in rapidly growing urban agglomerations. They also have attracted the attention of researchers, academicians, and policy makers. A large body of research literature exists that throws light on the magnitude of this problem and also indicates the interventions required. In a vast majority of Indian cities, buses are the main mode of public transport. An externality of the bus-based public transport system, like any other mode of transport, is the injuries and fatalities arising out of the crashes involving them. Buses are involved in 12-20 percent of fatal crashes in Indian cities. This paper …

Full Issue 13(4)

Journal of Public Transportation

No abstract provided.

Modern Public Library Building, Rineta Jashari

Theses and Dissertations

No abstract provided.

Construction Law, Frank O. Brown Jr.

Mercer Law Review

This Article focuses on noteworthy construction law decisions by appellate and federal district courts in Georgia between June 1, 2009 and May 31, 2010.

• NEGLIGENT CONSTRUCTION
• GEORGIA'S CONSTRUCTION-RELATED STATUTE OF REPOSE
• STATUTES OF LIMITATION
• ASSIGNMENT OF CLAIMS
• DAMAGES LIMITATIONS
• THE MILLER ACTS
• WARRANTIES
• ARBITRATION
• RIGHT TO TERMINATE CONTRACTS
• ECONOMIC LOSS RULE
• ACCEPTANCE DOCTRINE

Product Liability, Franklin P. Brannen Jr., Jacob E. Daly

Mercer Law Review

This Article surveys developments in Georgia product liability law between June 1, 2009 through May 31, 2010. It covers noteworthy cases decided during this period by the Georgia appellate courts, the United States Court of Appeals for the Eleventh Circuit, and the United States district courts located in Georgia.

Table Of Cases

Mercer Law Review

No abstract provided.

Pseudokarst Commission Newsletter, No. 21, December 2010, Jan Urban

Pseudokarst Commission Newsletter

Contents: Symposia, Conferences, Meetings… -- Pseudokarst Commission of the Czech Speleological Society Activities in Years 2008-2010 -- Pseudokarst Research in Sweden -- Butterflies Like the Caves in Volcanic Rocks -- Unusual Sandstone Crevice Caves in Ohio with Streams Generated from Sandstone Aquifers -- Short Remark on the Third Finding of Root-Stalagmites in Austria -- Hungarian Cave Research Expedition in Iceland -- Some Comments to the Problem of Non-Existing "System Poseidon" in the Teplicke Skaly Rock City (Czech Republic, EU) -- Editorial Note

Cal Poly Rose Float Electric Vehicle, Jennifer Slone, Jason Sherrett, Dionysios Pettas, Timothy Baldwin

Mechanical Engineering

(1) Background:

The Cal Poly Rose Float is currently powered by a pair of V-8 internal combustion engines. This is the second project in a three phase effort to replace the existing drive engine with an electric motor powered by a DC bus. The main goal of this phase of the project is to get the motor selected in phase one spinning.

(2) Results:

Originally, the project involved programming a microcontroller to achieve motor control. The decision was made, early on, to approach this task in a different manner due to the team’s minimal background in programming and mechatronics. The …

Asme Human Powered Vehicle, Benjamin Knaus, Philip Basmadjian, Nick Supat

Mechanical Engineering

Speed Solutions has been contracted to design and build a Human Powered Vehicle (HPV) frame and drivetrain for the Cal Poly HPV club to use in their 2011 race season. This project is being funded by the Cal Poly HPV club and their sponsors. The goal is to design, test and build a bicycle frame that the HPV club can attach to a fairing of their design. Primary design considerations will include speed, weight, cost, rider ergonomics, reliability and ease of repair. This vehicle will be used to compete in ASME’s Human Powered Vehicle Challenge (HPVC) series of races.

Adapted Recumbent Bike, Kurtis Mundell, Dane Tiemeier, Laura Yakuma, Darius Yu

Mechanical Engineering

The adapted recumbent project was to redesign a disabled veteran’s recumbent bicycle.  The main areas of concern were the crank pedal, chain tension, braking and steering system, and ergonomics. Since the customer is an avid biker, this bike will be used often, so the design is based on the ease of repair and replacement.  The crank system was redesigned to a lightweight, adjustable part with chain clearance and high strength. The chain tension was improved by replacing the existing single idler wheel/chain tube system with a dual idler wheel system. The dual idler has a titanium sprocket in one of …

Evaluating An Edms : A Case Study Of An Engineering Design Company., Nik Nazaruddin Nik Osman, Anisah Ali

Student Works (2010-2019)

Electronic Document Management System (EDMS) is a system that is commonly found in organizations that deal with a lot of documents. It is the application of technology to reduce paper utilization, expedite communications and increases organization’s performance and productivity. Leveraging information technology to manage document is one of the most important challenges for organizations since most of the valuable information in the organizations is in the form of letters, contracts, agreement, memos, reports, notes of discussion, meeting minutes, policy statements etc. The manual processes usually required to be re-engineered for computerization purposes. The availability of technologies provides more and better …

Development Of A Cubesat Payload To Model Particle Dampening In Space: Design And Implementation Of Software For Cp7, Daniel Walker

Computer Engineering

The California Polytechnic State University CubeSat student research & development group, PolySat, is currently in a mature development stage of a single unit CubeSat designated CP7. The CP7 mission implements a scientific payload designed to characterize particle dampers in microgravity conditions. When subjected to vibration, the momentum exchanges and frictional forces of the particles create a damping effect that can be optimized to suit a number of applications over a broad frequency and amplitude range. In space based applications, particle dampers would serve as a robust and simple device to eliminate jitter in optical assemblies and other sensitive instrumentation. This …

Utilization Of Automated Gcc Optimization For Dual-Width Instruction Sets On The Arm Architecture, Shane Watson

Computer Engineering

One of the most important considerations in embedded systems is code size. This consideration is obviously imposed by external factors such as cost and physical space, but what it boils down to is that we want our devices to be as powerful as they can within a (typically limited) specific form factor. This limits the amount of space we have for memory and as such we should always be considering the code size of our application and making sure it’s as efficient as possible. We also then need to consider other factors such as performance and power consumption. This is …

Editor's Introduction, Ross Louis

XULAneXUS

No abstract provided.

Pcr Ranch Development Analysis, Kristen Bowman

City and Regional Planning

No abstract provided.

Strangers And Pilgrims: The Challenge Of The Real, Robert K. Thomas

BYU Studies

This article is a classic speech by Robert K. Thomas and is an excerpt of a forthcoming publication of Thomas's best speeches. Thomas (1918–1998) served the Brigham Young University community for thirty-two years as an English professor, founder and director of the Honors Program, and academic vice president. This speech describes how genuine faith can successfully confront the challenges we face when our goals seem to be thwarted by the realities of our world. The speech concludes with Hebrews 11, which states that many great, faithful men and women died without seeing the fulfillment of promises they had received and …

Exerted Influence Of Des Concentration In The Room Temperature Ionic Conductivity And Thermal Behavior Of Cs-Litfsi-Des Polymer Electrolytes, Subramaniam Ramesh, R. Shanti, E. Morris, R. Durairaj

Research Publications (2006 to 2010)

In this communication, effort was devoted to fabricate completely biodegradable polymer electrolytes that are environmental-friendly by utilizing com starch (CS), bis(trifluoromethanesulfonyl)imide (LITFSI) and deep eutectic solvent (DES) (synthesized from the mixture of choline chloride and urea with 1:2 ratio) by solution casting technique. The incorporation of DES in plasticizing the CS-LiTFSI matrix was valued primarily due to its capability in increasing the amorphous elastomeric phase in the polymer matrix. This is a new and versatile platform which allows high ionic conduction possessed by natural polymer based polymer electrolytes. In alien to identify the best DES composition ratio, a wide range …

Design Of Electromagnetic Shock Absorbers For Energy Harvesting For Energy Harvesting From Vehicle Suspensions, Pei Sheng Zhang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Transportation accounts for 70% of oil consumption, and yet only 10-20% the fuel energy is used for vehicle mobility. One of the important losses is the energy dissipation in suspension vibration. The objectives of this thesis are to investigate energy recovery from vehicle suspensions by answering two questions: (1) how much energy is available while meeting the primary functions of shock absorbers? (2) how can the wasted energy be converted efficiently to electricity? To answer the first question, a vehicle-ground model, including the stochastic property of road roughness, vehicle parameters, travelling speed, is created with analysis of ride comfort, road …

Late Holocene Relationships Among Fire, Climate, And Vegetation In Rangeland Ecosystems Of Southwestern Idaho, Nathan A. Nelson, Jennifer Pierce

Geosciences Faculty Publications and Presentations

Rangelands are characterized by more arid climates than forested regions; therefore, establishing fire histories using traditional methods (e.g. fire-scars from trees or charcoal in lake sediments) is problematic. This study uses radiocarbon dating of charcoal preserved in alluvial fans and stream deposits to reconstruct a record of fire and geomorphic response in rangelands of southwestern Idaho. Samples indicate three primary periods of fire-related activity: 4400 – 4000, 2000 – 1400, and 650-400 cal yr BP. Charcoal macrofossil identification and comparison with other regional climate and fire records indicate this area has likely switched between a "fuel-limited" system (fires limited by …

The Google-Nsa Alliance: Developing Cybersecurity Policy At Internet Speed, Stephanie A. Devos

Fordham Intellectual Property, Media and Entertainment Law Journal

No abstract provided.