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Full-Text Articles in Engineering

Series Solution Of The Autocatalytic Hydrolysis Of Cellulose, Rou-Xi Chen, Zhi Liu, Ji-Huan He Dec 2104

Series Solution Of The Autocatalytic Hydrolysis Of Cellulose, Rou-Xi Chen, Zhi Liu, Ji-Huan He

Ji-Huan He

The chemical degradation kinetics of
cellulose is of scientific interest, as well as its practical
importance in many industrial activities for optimal
design. Much work has been done recently to understand
the depolymerizaton of cellulose in homogeneous
acidic medium on the assumption of
autocatalytic hydrolysis with a positive feedback of
acid production from the degraded biopolymer. Series
solutions are obtained for concentrations of cellulose
chains and degraded cellulose chains by Taylor series
and variational iteration method. Depolymerization of
cellulose strongly depends upon the initial conditions,
and the concentration of cellulose chains changes
exponentially with a linear and square/cubic time ...


An Analysis Of The Barriers To And Drivers Of Green Public Procurement In Achieving A More Sustainable Construction Industry, Myles Keaveney, Paul Butler Mar 2104

An Analysis Of The Barriers To And Drivers Of Green Public Procurement In Achieving A More Sustainable Construction Industry, Myles Keaveney, Paul Butler

Conference papers

The public sector in Ireland possesses enormous purchasing power which has the strength to affect production and consumption trends in all market sectors. Environmental purchasing tools such as Green Public Procurement (GPP) are seen by many as the solution to greener purchasing decisions in order to obtain and maintain not only a more sustainable construction sector but also a more sustainable economy. The purpose of this research is to determine and examine the key barriers to and drivers of implementing GPP in public procurement departments in order to reduce the effect construction works have on the environment. There was limited ...


Analysis Of Nonequilibrium Hcp Precipitate Growth In Fcc Matrices: Application To Al–Ag, Daniel Finkenstadt, Duane Johnson Nov 2029

Analysis Of Nonequilibrium Hcp Precipitate Growth In Fcc Matrices: Application To Al–Ag, Daniel Finkenstadt, Duane Johnson

Duane D. Johnson

Hexagonal-close-packed (hcp) γ-precipitates with large aspect ratios form rapidly in some face-centered cubic (fcc) solid-solutions. No model explains the observed time-dependent increase in aspect ratio, nor irregular intermediate growth shapes. We propose a nonequilibrium process involving trapezoidal offshoots (controlled only by energetics) that governs the growth behavior (kinetics) and yields nonequilibrium structures in agreement with observation. Then, combining nucleation theory and diffusion-limited growth both of secondary nuclei and ledges, we derive a general growth equation for γ-precipitates due to solute-segregation to precipitate–matrix interfaces that includes our modification of the Jones–Trivedi model for thickening to account for the slow ...


Cmmi High Maturity, Jack Calis Jan 2021

Cmmi High Maturity, Jack Calis

Jack Calis

Software Education Service in Asia, Europe and Africa, CMMI High Maturity based process of software process consultants and training in by CMMI-High Maturity.


Agen Bola Terpercaya Warung757.Net, Defaonline Blog May 2017

Agen Bola Terpercaya Warung757.Net, Defaonline Blog

defaonline blog

Agen Bola Terpercaya Warung757.net- Sebuah impian untuk menggapai cinta dari pertaruhan Bola Terpercaya Warung757.net yang mana situs ini memang benar-benar situs Judi Bola Online yang patut untuk di jadikan naungan dalam bertaruh judi bola online, Anda akan mendapatkan antusias yang luar biasa dari sekian banyak member yang sudah bergabung dengannya, Itu berarti anda akan menjadi tawanan pertaruhan bola dalam situs judi online terpercaya ini, Mengingat anda adalah spesialis pecinta judi bola dalam beberapa event persepakbolaan di dunia.
Hadir lagi sebuah event 5 tahunan yaitu Piala Euro 2016 yang akan di gelar di perancis nantinya, Ini akan membuat ramai ...


Effect Of Sky Conditions On Light Transmission Through A Suspended Particle Device Switchable Glazing, Aritra Ghosh, Brian Norton, Aidan Duffy Feb 2017

Effect Of Sky Conditions On Light Transmission Through A Suspended Particle Device Switchable Glazing, Aritra Ghosh, Brian Norton, Aidan Duffy

Articles

A suspended particle device (SPD) switchable glazing changes its state from opaque to transparent in the presence of a power supply. SPD glazing's near normal transmission varies with incident angle and clearness index. Due to a lower diffuse component, higher glazing transmission ensues at higher clearness indices. Transmittance values for different azimuthal incident angle for a SPD glazing for its “transparent” and “opaque” states have been determined. In Dublin, below 0.5 clearness index, isotropic diffuse transmittance was prevailed while transmission of direct insolation was dominant above 0.5 clearness index. For south facing vertical plane SPD glazing transmittance ...


Improving The Player's Recruiting Process By Using Scenario Based Analysis Methodology, Dotan I. Shvorin, Kevin M. Taaffe Jan 2017

Improving The Player's Recruiting Process By Using Scenario Based Analysis Methodology, Dotan I. Shvorin, Kevin M. Taaffe

Dotan Shvorin

High performance physical characteristics can be found today in most of the potential recruitsfor any athletic program and it has become increasingly dificult to select the right candidatebased solely on these characteristics. As a result there is a growing need for a recruiter to evaluatethe decision-making capability of a player in order to understand the mind of the player inaddition to the player physical assessment. We employ scenario-based analysis to evaluate suchdecision-making capabilities while enabling any recruiting to customize the potential candidateevaluation, based on the specific program's needs. The proposed method provides a platformfor decision making evaluation within a ...


Power Requirements Of Biogas Upgrading By Water Scrubbing And Biomethane Compression: Comparative Analysis Of Various Plant Configurations, Wojciech M. Budzianowski, Christophe E. Wylock, Przemysław A. Marciniak Dec 2016

Power Requirements Of Biogas Upgrading By Water Scrubbing And Biomethane Compression: Comparative Analysis Of Various Plant Configurations, Wojciech M. Budzianowski, Christophe E. Wylock, Przemysław A. Marciniak

Wojciech Budzianowski

Biogas upgrading by water scrubbing followed by biomethane compression is an environmentally benign process. It may be achieved using various plant configurations characterised by various power requirements with associated effects on biomethane sustainability. Therefore, the current study has been undertaken to systematically investigate the power requirements of a range of water scrubbing options. Two groups of water scrubbing are analysed: (1) high pressure water scrubbing (HPWS) and (2) near-atmospheric pressure water scrubbing (NAPWS). A water scrubbing plant model is constructed, experimentally validated and simulated for seven upgrading plant configurations. Simulation results show that the power requirement of biogas upgrading in ...


Total Chain Integration Of Sustainable Biorefinery Systems, Wojciech M. Budzianowski, Karol Postawa Dec 2016

Total Chain Integration Of Sustainable Biorefinery Systems, Wojciech M. Budzianowski, Karol Postawa

Wojciech Budzianowski

Biorefineries are increasingly important commercial facilities for the production of biofuels, biopower and various biomaterials from biomass with potentials to displace several existing industries currently based on polluting and finite fossil resources. Biorefinery systems consist of biorefinery facilities and their entire value chain. Integration of biorefinery systems aims at optimising the use of energies and materials in the total chain from biomass plantations to end product utilisation and is therefore capable of successfully improving economic viability and sustainability of biorefineries. Total Chain Integration can minimise capital and operating expenditures, maximise the quality, quantity and value of biorefinery bioproducts as well ...


Evolutionary View Planning For Optimized Uav Terrain Modeling In A Simulated Environment, Ronald A. Martin, Ivan Rojas, Kevin W. Franke, John Hedengren Dec 2016

Evolutionary View Planning For Optimized Uav Terrain Modeling In A Simulated Environment, Ronald A. Martin, Ivan Rojas, Kevin W. Franke, John Hedengren

All Faculty Publications

This work demonstrates the use of genetic algorithms in optimized view planning for 3D reconstruction applications using small unmanned aerial vehicles (UAVs). The quality of UAV site models is currently highly dependent on manual pilot operations or grid-based automation solutions. When applied to 3D structures, these approaches can result in gaps in the total coverage or inconsistency in final model resolution. Genetic algorithms can effectively explore the search space to locate image positions that produce high quality models in terms of coverage and accuracy. A fitness function is defined, and optimization parameters are selected through semi-exhaustive search. A novel simulation ...


Integrated Environmental Sustainability And Resilience Assessment Model For Coastal Flood Hazards Dec 2016

Integrated Environmental Sustainability And Resilience Assessment Model For Coastal Flood Hazards

Fatemeh Orooji

No abstract provided.


Time Enough - Consequences Of Human Microchip Implantation, Elaine M. Ramesh Dec 2016

Time Enough - Consequences Of Human Microchip Implantation, Elaine M. Ramesh

RISK: Health, Safety & Environment

Dr. Ramesh argues that microchip implantation is both possible and, for some purposes, desirable and suggests that now is the time to consider strategies for preventing potentially grievous intrusion into personal privacy.


Book Review Of Alla Yaroshinskaya, Chernobyl: The Forbidden Truth, John M. Gleason Dec 2016

Book Review Of Alla Yaroshinskaya, Chernobyl: The Forbidden Truth, John M. Gleason

RISK: Health, Safety & Environment

Review of the book: Alla Yaroshinskaya, Chernobyl: The Forbidden Truth (Michele Kahn & Julia Sallabank, trans. University of Nebraska Press 1995). Introduction, foreword, list of illustrations, photographs. ISBN 0-8032-4912-8. [136 pp. Cloth $25.00; Paper $10.00. 312 N. 14th Street, Lincoln NE 68588-0484.]


Physical And Managed Risk Of Nuclear Waste, Lennart Sjöberg, Britt-Marie Drottz-Sjöberg Dec 2016

Physical And Managed Risk Of Nuclear Waste, Lennart Sjöberg, Britt-Marie Drottz-Sjöberg

RISK: Health, Safety & Environment

The authors describe their work on the perceived risk of nuclear waste in Sweden. Three levels of waste were studied, and comparisons between the perceptions of the public, politicians and nuclear experts are made.


The Decision To Reactivate A First-Generation Soviet Nuclear Power Plant: Conceptual And Decision-Analytic Frameworks, John M. Gleason Dec 2016

The Decision To Reactivate A First-Generation Soviet Nuclear Power Plant: Conceptual And Decision-Analytic Frameworks, John M. Gleason

RISK: Health, Safety & Environment

Explores a variety of factors that led to reopening the Armenian Metsamor facility notwithstanding general agreement that this is unwarranted technologically.


Academy Recommendations On The Proposed Yucca Mountain Waste Repository: Overview And Criticisms, Kristin S. Shrader-Frechette Dec 2016

Academy Recommendations On The Proposed Yucca Mountain Waste Repository: Overview And Criticisms, Kristin S. Shrader-Frechette

RISK: Health, Safety & Environment

Offers alternative criticism of the NAS report.


Maximum Individual & Vicinity-Average Dose For A Geologic Repository Containing Radioactive Waste, Thomas H. Pigford Dec 2016

Maximum Individual & Vicinity-Average Dose For A Geologic Repository Containing Radioactive Waste, Thomas H. Pigford

RISK: Health, Safety & Environment

Explains the basis for his strong dissent to an NAS report on Yucca Mountain.


Calculator.Zip, Farid Osuli Dec 2016

Calculator.Zip, Farid Osuli

Farid Osuli

scientific calculator
in C#
By Engineer Farid Osuli Afghan


Development Of A Problem-Based Learning Matrix For Data Collection, Shannon M. Sipes Dec 2016

Development Of A Problem-Based Learning Matrix For Data Collection, Shannon M. Sipes

Interdisciplinary Journal of Problem-Based Learning

Few of the papers published in journals and conference proceedings on problem-based learning (PBL) are empirical studies, and most of these use self-report as the measure of PBL (Beddoes, Jesiek, & Borrego, 2010). The current study provides a theoretically derived matrix for coding and classifying PBL that was objectively applied to official curriculum documentation in a content analysis. The results for the level of problem-based learning in two engineering program curricula are presented. By introducing such a matrix, this study offers a tool that can be applied by other scholars examining PBL, creating consistency in methodology, definitions, and language among scholars.


Scitech News Volume 70, No. 4 (2016) Dec 2016

Scitech News Volume 70, No. 4 (2016)

Sci-Tech News

Columns and Reports

From the Editor 3

Division News

Science-Technology Division 4

SLA Annual Meeting 2016 Report (S. Kirk Cabeen Travel Stipend Award recipient) 6

Reflections on SLA Annual Meeting (Diane K. Foster International Student Travel Award recipient) 8

SLA Annual Meeting Report (Bonnie Hilditch International Librarian Award recipient)10

Chemistry Division 12

Engineering Division 15

Reflections from the 2016 SLA Conference (SPIE Digital Library Student Travel Stipend recipient)15

Fundamentals of Knowledge Management and Knowledge Services (IEEE Continuing Education Stipend recipient) 17

Makerspaces in Libraries: The Big Table, the Art Studio or Something Else? (by Jeremy Cusker) 19

Aerospace ...


Review Of: Science Advice To The President (William T. Golden, Ed. Aaas Press 2d Ed. 1993)., Timothy Van Dyke Dec 2016

Review Of: Science Advice To The President (William T. Golden, Ed. Aaas Press 2d Ed. 1993)., Timothy Van Dyke

RISK: Health, Safety & Environment

Review of: Science Advice to the President (William T. Golden, ed. AAAS Press 2d Ed. 1993). Acknowledgments, index of names, introductions, notes, tables. ISBN 0-87168-509-4 [340 pp. $29.95 paper. American Association for the Advancement of Science, 1333 H St. NW, Washington DC 20701.]


Review Of: Ike Jeanes, Forecast And Solution - A Trilogy For Everyone Grappling With The Nuclear (Pocahontas Press 1996), Drew Schaefer Dec 2016

Review Of: Ike Jeanes, Forecast And Solution - A Trilogy For Everyone Grappling With The Nuclear (Pocahontas Press 1996), Drew Schaefer

RISK: Health, Safety & Environment

Review of the book: Ike Jeanes, Forecast and Solution - A Trilogy for Everyone Grappling with the Nuclear (Pocahontas Press 1996). Addenda, appendix, figures, front matter, notes, references, tables. ISBN 0-936015-62-4 [800 pp. Cloth $32.00; paper $25.00. P.O. Drawer F, Blacksburg VA 24063-1020.]


Risk Criteria For Approving Or Rejecting Field Tests Of High-Performance Weapons, Shaul Feller, Michael Maharik Dec 2016

Risk Criteria For Approving Or Rejecting Field Tests Of High-Performance Weapons, Shaul Feller, Michael Maharik

RISK: Health, Safety & Environment

Because details are classified and participation by affected populations is limited, military test ranges impose difficult challenges on those responsible for their safety. Here, the authors catalog some of those challenges and suggest ways to address them.


Pilot Source Study 2015: An Analysis Of Far Part 121 Pilots Hired After Public Law 111-216—Their Backgrounds And Subsequent Successes In Us Regional Airline Training And Operating Experience, Guy Smith, Elizabeth Bjerke, Maryjo Smith, Cody Christensen, Thomas Carney, Paul Craig, Mary Niemczyk Dec 2016

Pilot Source Study 2015: An Analysis Of Far Part 121 Pilots Hired After Public Law 111-216—Their Backgrounds And Subsequent Successes In Us Regional Airline Training And Operating Experience, Guy Smith, Elizabeth Bjerke, Maryjo Smith, Cody Christensen, Thomas Carney, Paul Craig, Mary Niemczyk

Journal of Aviation Technology and Engineering

This report is the second in a series entitled Pilot Source Study 2015. Public Law 111-216 (Airline Safety and Federal Aviation Administration Extension Act of 2010) and the subsequent FAA regulation changed pilot hiring for US air carriers operating under 14 CFR Part 121. The Pilot Source Study 2015 was designed to determine the effect of Public Law 111-216 on US regional airlines after its effective date, August 1, 2013. The study collected records for 6,734 FAR Part 121 regional airline pilots to determine the effect of pilots’ backgrounds on their performance in regional airline training and operations. A ...


A Multiband Ofdma Heterogeneous Network For Millimeter Wave 5g Wireless Applications, Solmaz Niknam, Ali Arshad Nasir, Hani Mehrpouyan, Balasubramaniam Natarajan Dec 2016

A Multiband Ofdma Heterogeneous Network For Millimeter Wave 5g Wireless Applications, Solmaz Niknam, Ali Arshad Nasir, Hani Mehrpouyan, Balasubramaniam Natarajan

Hani Mehrpouyan

Emerging fifth generation (5G) wireless networks require massive bandwidth in higher frequency bands, extreme network densities, and flexibility of supporting multiple wireless technologies in order to provide higher data rates and seamless coverage. It is expected that utilization of the large bandwidth in the millimeter-wave (mmWave) band and deployment of heterogeneous networks (HetNets) will help address the data rate requirements of 5G networks. However, high pathloss and shadowing in the mmWave frequency band, strong interference in the HetNets due to massive network densification, and coordination of various air interfaces are challenges that must be addressed. In this paper, we consider ...


‘‘Can I Drop It This Time?’’ Gender And Collaborative Group Dynamics In An Engineering Design-Based Afterschool Program, Jessica Schnittka, Christine Schnittka Dec 2016

‘‘Can I Drop It This Time?’’ Gender And Collaborative Group Dynamics In An Engineering Design-Based Afterschool Program, Jessica Schnittka, Christine Schnittka

Journal of Pre-College Engineering Education Research (J-PEER)

The 21st century has brought an increasing demand for expertise in science, technology, engineering, and math (STEM). Although strides have been made towards increasing gender diversity in several of these disciplines, engineering remains primarily male dominated. In response, the U.S. educational system has attempted to make engineering curriculum more engaging, informative, and welcoming to girls. Specifically, project-based and design-based learning pedagogies promise to make engineering interesting and accessible for girls while enculturating them into the world of engineering and scientific inquiry. Outcomes for girls learning in these contexts have been mixed. The purpose of this study was to explore ...


Pricing And Reliability Enhancements In The San Diego Activity-Based Travel Model, Joel Freedman Dec 2016

Pricing And Reliability Enhancements In The San Diego Activity-Based Travel Model, Joel Freedman

TREC Friday Seminar Series

The estimation of demand for priced highway lanes is becoming increasingly important to agencies seeking to improve mobility and find alternative revenue sources for the provision of transportation infrastructure.

However, many modeling tools fall short of what is required for robust estimates of demand with respect to toll and managed lanes in two key areas:

  • The value-of-time is often aggregate and not consistently defined throughout the model system, and
  • The reliability of transport infrastructure is rarely taken into account.

This presentation describes an effort which implemented recommendations of the Strategic Highway Research Program C04 and L03\L04 tracks on pricing ...


In-Plane Loading Of Brick Veneer Over Wood Shear Walls, Elias Anis Toubia, James M. Lintz Dec 2016

In-Plane Loading Of Brick Veneer Over Wood Shear Walls, Elias Anis Toubia, James M. Lintz

Elias Toubia

In the design of wood stud walls with brick veneer, current design building codes specify that the wood stud wall should resist all in-plane and out-of-plane loads (IBC 2009). For out-of-plane loads, this assumption is entirely justified as the brittle brick veneer will crack and lose its capacity to resist bending. For in-plane loads, the brick veneer is significantly stiffer than the wood shear wall, and the veneer is unlikely to crack before the wood shear wall reaches its allowable capacity. The assumption that the wood shear wall resists the entire load is based on the further assumption that the ...


Development Of Design Loads For Transmission Line Structures Subjected To Downbursts Using Aero-Elastic Testing And Numerical Modeling, Amal Elawady Dec 2016

Development Of Design Loads For Transmission Line Structures Subjected To Downbursts Using Aero-Elastic Testing And Numerical Modeling, Amal Elawady

Electronic Thesis and Dissertation Repository

The failure of transmission line structures due to severe High Intensity Wind (HIW) events is one of the major problems facing the electrical utility companies in various places around the globe including Canada. An extensive research program focusing on this problem started about fifteen years ago at The University of Western Ontario (UWO). In this Thesis, two major milestones are achieved leading to the advancement of the knowledge in this field. The first milestone is conducting, for the first time, a test on an aero-elastic model of a multi-span transmission system under reduced–scale simulated downbursts. The first objective of ...


Multipath And Rate Stability, Junjie Liu, Roch A. Guérin Dec 2016

Multipath And Rate Stability, Junjie Liu, Roch A. Guérin

All Computer Science and Engineering Research

Originally Published In Proc. IEEE Globecom Conference - CQRM: Communication QoS, Reliability & Modeling Symposium