Sample records for asphalt binder learn

  1. Moisture Diffusion in Asphalt Binders and Fine Aggregate Mixtures

    E-Print Network [OSTI]

    Vasconcelos, Kamilla L.

    2011-08-08T23:59:59.000Z

    cost in highway maintenance and vehicle operations. One key mechanism of how moisture reaches the asphalt-aggregate interface is by its permeation or diffusion through the asphalt binder or mastic. Different techniques are available for diffusion...

  2. Relationship Between Surface Free Energy and Total Work of Fracture of Asphalt Binder and Asphalt Binder-Aggregate Interfaces 

    E-Print Network [OSTI]

    Howson, Jonathan Embrey

    2012-10-19T23:59:59.000Z

    is the surface free energy of the asphalt binder and the aggregate. Surface free energy, which is a thermodynamic material property, is directly related to the adhesive bond energy between the asphalt binder and the aggregate as well as the cohesive bond energy...

  3. Relationship Between Surface Free Energy and Total Work of Fracture of Asphalt Binder and Asphalt Binder-Aggregate Interfaces

    E-Print Network [OSTI]

    Howson, Jonathan Embrey

    2012-10-19T23:59:59.000Z

    is the surface free energy of the asphalt binder and the aggregate. Surface free energy, which is a thermodynamic material property, is directly related to the adhesive bond energy between the asphalt binder and the aggregate as well as the cohesive bond energy...

  4. Improvements to a Transport Model of Asphalt Binder Oxidation in Pavements: Pavement Temperature Modeling, Oxygen Diffusivity in Asphalt Binders and Mastics, and Pavement Air Void Characterization

    E-Print Network [OSTI]

    Han, Rongbin

    2012-07-16T23:59:59.000Z

    Although evidence is mounting that asphalt binder oxidizes in pavements, and that oxidation and subsequent hardening of asphalt binder has a profound effect on pavement durability, important implementation issues remain to be better understood...

  5. Recycling asphaltic concrete with sulphur as a supplemental binder

    E-Print Network [OSTI]

    Barnett, Robert William

    1976-01-01T23:59:59.000Z

    in the United States, and the use of this secondary sulphur for construction purposes could provide not only a vast savings of natural resources and reusable materials but also aid industry in recovering the cost of environ- mental protection. The waste... industry [25, 26, 27, 28]. Research has been undertaken to investigate the use of sulphur in sand-asphalt- sulphur pavement mixes [11, 25, 29, 30]. The use of sulphur in sulphur-asphalt emulsions to serve as a binder has also been studied [26, 31, 32...

  6. Compositional evaluation of asphalt binder recycling agents

    E-Print Network [OSTI]

    Madrid, Richard Charles

    1997-01-01T23:59:59.000Z

    from: Exxon Research and Engineering Company, The National Consortium for Graduate Degrees for Minorities in Engineering and Science, Inc. Fellowship (GEM), and the DOW Technical Fellowship is greatly appreciated. I thank Sophie and Ignacio Madrid... for Recycled Blends . . . . . Asphaltic Materials. . 54 58 63 69 V-2 V-3 V-4 V-5 V-6 V-7 Fina DMO and Exxon Tank Compositions and Viscosities. . . . Blend Compositions and Viscosities...

  7. Evaluation of healing in asphalt binders using dynamic shear rheometer and molecular modeling techniques 

    E-Print Network [OSTI]

    Bommavaram, Ramamohan Reddy

    2009-05-15T23:59:59.000Z

    A self-healing material has the inherent ability to partially reverse damage such as crack formation that might have occurred during its service. Significant evidence exists in the literature to indicate that asphalt binder is a self...

  8. Evaluation of healing in asphalt binders using dynamic shear rheometer and molecular modeling techniques

    E-Print Network [OSTI]

    Bommavaram, Ramamohan Reddy

    2009-05-15T23:59:59.000Z

    the parameters of characteristic healing function of asphalt binders. In the second part of this study, Molecular Modeling (MM) techniques were used to determine the interrelationship between molecular structure, surface free energy, self diffusivity, and other...

  9. asphalt binder extraction: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Corrections to Volucm Change... Gandhi, Poduru Mohandas Karamchand 1966-01-01 43 Life Cycle Assessment of Reclaimed Asphalt Pavement Energy Storage, Conversion and Utilization...

  10. Moisture Diffusion in Asphalt Binders and Fine Aggregate Mixtures 

    E-Print Network [OSTI]

    Vasconcelos, Kamilla L.

    2011-08-08T23:59:59.000Z

    coefficient measurement of a wide variety of polymersolvent systems. For the asphalt-water system studied, the focus is on two techniques: (i) Fourier Transform Infrared (FTIR)-Attenuated Total Reflectance (ATR) spectrometry and (ii) Gravimetric Sorption...

  11. Effect of pyrolyzed carbon black on asphalt cement. Part 2. Asphalt binder. Final report, September 1993-May 1995

    SciTech Connect (OSTI)

    Zeng, Y.; Lovell, C.W.

    1996-02-20T23:59:59.000Z

    Scrap tires derived from automobiles have become a large environmental problem in the United States. In the study, research is carried out to investigate the potential use of tire-derived pyrolyzed carbon black from scrap tires as an asphalt cement modifier. The asphlat cements used in the research were AC10 and AC20. Penetration and softening point tests were performed to obtain the consistency of the asphalt cements. The pyrolyzed carbon black, as provided by Wolf Industries, was combined with the asphalt cement in the following percentages: 5%, 10%, 15% and 20%. Penetration, softening point and ductility tests were performed to determine the temperature susceptibility of the modified binder as altered by the pyrolyzed carbon black. In order that the results are comparable to previous testing, commercial carbon black purchased from CABOT Industry was also used as a modifier in the tests. The same test procedures were applied to the asphalt cements modified by commercial carbon black. The test results contained in the report illustrate the viability of the pyrolyzed carbon black as an asphalt modifier. Recommendations are provided to facilitate further research on this particular project. A preliminary assessment of a test road using the pyrolyzed carbon is appended.

  12. Toward an Improved Model of Asphalt Binder Oxidation in Pavements

    E-Print Network [OSTI]

    Prapaitrakul, Nikornpon

    2011-02-22T23:59:59.000Z

    and oxygen transport model, coupled with binder reaction kinetics, provides the basis for such calculations. A one-dimensional thermal transport model, coupled with site-specific model parameters and recent improvements in the availability of required input...

  13. The effects of asphalt binder oxidation on hot mix asphalt concrete mixture rheology and fatigue performance

    E-Print Network [OSTI]

    Jung, Sung Hoon

    2009-06-02T23:59:59.000Z

    .................................................. 108 Figure V-11. VE Function Map of Yoakum Mixtures .............................................. 108 Figure V-12. VE Function versus DSR Function ...................................................... 110 Figure V-13. Hirsch Model from Bryan PP2... Binder................................................. 112 xiv Page Figure V-14. Comparison between Bryan Mixture PP2 and Hirsch Model. ............. 113 Figure V-15. Comparison between Yoakum Mixture PP2 and Hirsch Model.......... 114 Figure...

  14. The curing of asphalt with rubber and its effect on the physical and chemical properties of asphalt-rubber binders

    E-Print Network [OSTI]

    Chun, Jay Sung

    1995-01-01T23:59:59.000Z

    10% TG-40 and 90% Exxon AC-5. 105 B-1 Molecular Size Distribution of Rubber in Asphalt 5% TG-40 and 95% Fina AC-10. . . 123 B-2 Molecular Size Distribution of Rubber in Asphalt 10% TG-40 and 90% Fina AC-10. . 124 xlv FIGURE B-3 Molecular Size.... 0 Frequency (rad/s) 10. 0 100. 0 Figure III-2: Effect of Frequency on Viscosity Measurements Fina AC-10 Tank Asphalt 2500 2000 0 a 1500 1000 o 0 0 0 0 o o 0 0 0 0 0 0 0 o 0 Fina AC-10 with 5% TG-40 mesh rubber Cured at 375 F and 500...

  15. Oxidative reactions and their impact on the properties of asphalt as a pavement binder

    E-Print Network [OSTI]

    Lau, Chee Keung

    1991-01-01T23:59:59.000Z

    mechanical spectrometer was found to increase with aging time. Correlation was shown to exist between the limiting complex viscosity and the carbonyl area as determined by infrared analysis. The correlation was unique for each asphalt and was independent... of aging temperature. The carbonyl area growth rate was a strong function of the aging temperature and the temperature dependence of the rate constant followed the Arrhenius relation within the temperature range tested. The results led...

  16. Investigation of Rheological and Nano-Rheological Properties of Asphalt Binders

    E-Print Network [OSTI]

    Kabir, Pooyan

    2014-08-04T23:59:59.000Z

    absorption. The amount of 0.2-0.3 grams of binders were spread on a 0.5×3 (cm2) area to prepare the samples. 2.2.2 Equipment The Bruker Dimension Icon AFM and the data processing unit were used to measure mechanical properties at room temperature (25 °C...

  17. asphalt: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    asphalt pavements containing asphalt binder and aggregates. The use of RAP can reduce the cost of construction materials, reduce the amount of waste... Thakur, Jitendra Kumar...

  18. asphalts: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    asphalt pavements containing asphalt binder and aggregates. The use of RAP can reduce the cost of construction materials, reduce the amount of waste... Thakur, Jitendra Kumar...

  19. BBR Asphalt mixture creep test BBR Asphalt mixture creep size effect

    E-Print Network [OSTI]

    Minnesota, University of

    #12;Outline ŘBBR Asphalt mixture creep test ŘBBR Asphalt mixture creep size effect ŘBBR Asphalt Point Bending Test Low temperature 3-point bending creep tests on specimens with three different sizes mixture strength test ŘBBR Asphalt binder strength test #12;Asphalt Pavements ŘRecent efforts under NCHRP

  20. Summary of Construction Activities and Results from Six Initial Accelerated Pavement Tests Conducted on Asphalt Concrete Pavement Section for Modified-Binder Overlay

    E-Print Network [OSTI]

    Bejarano, Manuel O.; Morton, Bruce S.; Scheffy, Clark

    2005-01-01T23:59:59.000Z

    Testing on the Asphalt Concrete FWD testing was conducted onin asphalt concrete modulus after HVS testing for Sectionsconcrete pavements under accelerated pavement testing. This

  1. Life Cycle Assessment of Reclaimed Asphalt Pavement

    E-Print Network [OSTI]

    Minnesota, University of

    Life Cycle Assessment of Reclaimed Asphalt Pavement to Improve Asphalt Pavement Sustainability By Pavement (RAP) Courtesy of http://myconstructionphotos.smugmug.com/ RAP #12;Transport Back to the Plant-melt old binder on the RAP #12;Life Cycle Assessment (LCA) · #12;Asphalt Pavement Life Cycle Road

  2. An investigation of the use of tire rubber in asphalt

    E-Print Network [OSTI]

    Koo, Heamo Lee

    1996-01-01T23:59:59.000Z

    -rubber binder. The selected variables chosen are curing time, curing temperature, rubber content (weight percent), rubber particle size, base asphalt type, and carbonyl area. Results confirmed that the addition of rubber increased the viscosity of the asphalt...

  3. Recycled rubber, aggregate, and filler in asphalt paving mixtures. Transportation research record

    SciTech Connect (OSTI)

    NONE

    1996-12-31T23:59:59.000Z

    ;Contents(Partial): Evaluation Systems for Crumb Rubber Modified Binders and Mixtures; Hot Mix Asphalt Rubber Applications in Virginia; Evaluation of Pyrolized Carbon Black from Scrap Tires as Additive in Hot Mix Asphalt; Use of Scrap Tire Chips in Asphaltic Membrane; Effects of Mineral Fillers on Properties of Stone Matrix Asphalt Mixtures; and Quantitative Analysis of Aggregate Based on Hough Transform.

  4. Evaluation of the filler effects on fatique cracking and permanent deformation of asphalt concrete mixtures 

    E-Print Network [OSTI]

    Izzo, Richard P

    1997-01-01T23:59:59.000Z

    The addition of hydrated lime to asphalt has shown to be beneficial with an improvement in the Theological properties of the binder, as well as resistance to permanent deformation (rutting) and fatigue cracking of asphalt concrete mixtures...

  5. Evaluation of the filler effects on fatique cracking and permanent deformation of asphalt concrete mixtures

    E-Print Network [OSTI]

    Izzo, Richard P

    1997-01-01T23:59:59.000Z

    The addition of hydrated lime to asphalt has shown to be beneficial with an improvement in the Theological properties of the binder, as well as resistance to permanent deformation (rutting) and fatigue cracking of asphalt concrete mixtures...

  6. Evaluation of Rexene polymers in hot mixed asphalt concrete 

    E-Print Network [OSTI]

    Rodriguez, Mary Anne Reese

    1991-01-01T23:59:59.000Z

    Committee: Dr. Dallas N. Little The objective of this research was to provide a comprehensive characterization of asphalt binders and paving mixtures modified with four polymers produced by the Rexene Products Company (Odessa, Texas). The four polymers... LITERATURE REVIEW AND INTERPRETATION General Available Asphalt Additives Practical Application of Asphalt Additives Benefit-Costs for Additives Future Outlook for Additives MATERIALS AND TEST METHODS Polymers Asphalt Cements Aggregate Procedure...

  7. A thermodynamic approach for compaction of asphaltic composites

    E-Print Network [OSTI]

    Koneru, Saradhi

    2009-05-15T23:59:59.000Z

    and Focus of Current Work . . . . . . . . . . . . . . 2 B. Outline of the Thesis . . . . . . . . . . . . . . . . . . . . . 3 C. Notations Used . . . . . . . . . . . . . . . . . . . . . . . . 4 II LITERATURE REVIEW... . . . . . . . . . . . . . . . . 8 b. Asphalt Binder . . . . . . . . . . . . . . . . . . . 8 C. Compaction Equipment . . . . . . . . . . . . . . . . . . . . 9 1. Field Compaction Equipment . . . . . . . . . . . . . . 9 a. Static Steel Wheel Rollers . . . . . . . . . . . . . 9 b...

  8. asphalt concrete pavement: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    this thesis. It included the following tasks: investigation of a testing and grading system for grading asphalt binder residues... Hoyt, Denise 2012-07-16 8 Full-Depth Pavement...

  9. asphaltic concrete pavement: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    this thesis. It included the following tasks: investigation of a testing and grading system for grading asphalt binder residues... Hoyt, Denise 2012-07-16 8 Full-Depth Pavement...

  10. asphalt concrete pavements: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    this thesis. It included the following tasks: investigation of a testing and grading system for grading asphalt binder residues... Hoyt, Denise 2012-07-16 8 Full-Depth Pavement...

  11. asphaltic concrete pavements: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    this thesis. It included the following tasks: investigation of a testing and grading system for grading asphalt binder residues... Hoyt, Denise 2012-07-16 8 Full-Depth Pavement...

  12. INTRODUCTION The increase in energy costs has led to a significant rise in the cost of mixtures containing asphalt cement. This resulted

    E-Print Network [OSTI]

    Harms, Kyle E.

    containing asphalt cement. This resulted in a need to search for alternatives that reduce the cost of those mixed with low percentages (1 percent below standard HMA mixtures) of paving grade asphalt cement and lower percentages of asphalt cement binder and easier compaction efforts. Asphalt treated mixtures can

  13. Microstructural Characterization of Material Properties and Damage in Asphalt Composites

    E-Print Network [OSTI]

    Mohammad Khorasani, Sara

    2013-05-03T23:59:59.000Z

    MICROSTRUCTURAL CHARACTERIZATION OF MATERIAL PROPERTIES AND DAMAGE IN ASPHALT COMPOSITES A Thesis by SARA MOHAMMAD KHORASANI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... Engineering Copyright 2013 Sara Mohammad Khorasani ii ABSTRACT Asphalt composites are used to construct 90% of roads in the United States. These composites consist of asphalt binder, which is a product of the refinery process of oil, aggregates...

  14. Evaluation of polyethylene-modified asphalt blends

    E-Print Network [OSTI]

    Consuegra Granger, Fernando

    1990-01-01T23:59:59.000Z

    aggregate and asphalt modified with LDPE (binder contents of 4. 8%%u and 5. 87'). 42 Table 9. Summary of statistical parameters derived from IDT testing on crushed granite mixtures bound with AC-20 + LDPE (4. 8%, and 5. 8/ binder). 46 Table 10. Summary... of creep to rupture data for crushed granite mixtures. 71 Table 11. Summary of the results of IDT repeated load fatigue testing of river gravel mixtures bound with Texaco asphalt: AC- 10, AC-10 + LDPE and AC-20. Table 12. K, ' and n, values of river...

  15. Compatibilizer for crumb rubber modified asphalt

    SciTech Connect (OSTI)

    Labib, M.E. [New Jersey Institute of Technology, Newark, NJ (United States); Memon, G.M.; Chollar, B.H. [Federal Highway Administration, McLean, VA (United States)

    1996-12-31T23:59:59.000Z

    The United States of America discards more than 300 million tires each year, and out of that a large fraction of the tires is dumped into stock piles. This large quantity of tires creates an environmental problem. The use of scrap tires is limited. There is a usage potential in such fields as fuel for combustion and Crumb Rubber-Modified Asphalt binder (CRMA). The use of crumb rubber in modifying asphalt is not a new technique; it is been used since early 1960 by pavement engineers. Crumb rubber is a composite of different blends of natural and synthetic rubber (natural rubber, processing oils, polybutadiene, polystyrene butadiene, and filler). Prior research had concluded that the performance of crumb rubber modified asphalt is asphalt dependent. In some cases it improves the Theological properties and in some cases it degrades the properties of modified asphalt.

  16. Aged asphalt

    E-Print Network [OSTI]

    Martin, Kenneth Lloyd

    1988-01-01T23:59:59.000Z

    Dorchester Asphalts Exxon Asphalts CONCLUSIONS RECOMMENDATIONS LITERATURE CITED APPENDIX 41 42 48 59 70 84 90 93 96 99 103 105 106 A. GEL PERMEATION CHROMATOGRAMS OF TEST ASPHALTS 108 B. FOURIER-TRANSFORM INFRARED SPECTRUMS OF TEST... Apparatus 5. Abson Method Apparatus 6. ASTM D 2171 Apparatus 7. Sample Pellet Die 8. Sample Pellet Holder 21 23 27 29 38 40 9. GPC of Lufkin Exxon AC-20 Extracted by Two Methods . . . . . . . . . . . . . . . . 46 10. GPC of Dickens Exxon AC-20 51...

  17. Recycling of plastic and rubber tire waste in asphalt pavements

    SciTech Connect (OSTI)

    Morrison, G.R.; Lee, N.K.; Hesp, S.A.M. [Queen`s Univ., Kingston, Ontario (Canada). Dept. of Chemistry

    1994-12-31T23:59:59.000Z

    This paper discusses some important issues related to the use of recycled thermoplastics and rubber tire waste in asphalt binders for hot-mix pavements. Both high temperature rheological and low temperature fracture studies are presented on recycled polyethylene, devulcanized and crumb rubber-modified asphalt binders. The results are compared to unmodified and commercially available modified binders. This research is especially timely in light of the US Intermodal Surface Transportation Efficiency Act of 1991, Section 1038 which, starting in 1995, will force state and local governments to use significant amounts of recycled rubber tire or plastic waste in federally funded highway projects. High temperature rheological measurements of the loss modulus, loss tangent and complex modulus show a significant improvement when only small quantities of crumb rubber, devulcanized crumb rubber or waste polyethylene are added to the asphalt binders. The low temperature fracture performance of the modified asphalts is greatly influenced by the interfacial strength between the dispersed and continuous phase. The fracture toughness increases dramatically, only when low molecular weight polymers are grafted in-situ onto the rubber and polymer dispersed phases in order to strength the interface. This points to a crack-pinning mechanism as being responsible for the dramatic increase in fracture toughness that is observed in this work. Single phase, devulcanized crumb rubber-asphalt systems perform quite poorly at low temperatures.

  18. Metal-phosphate binders

    DOE Patents [OSTI]

    Howe, Beth Ann [Lewistown, IL; Chaps-Cabrera, Jesus Guadalupe [Coahuila, MX

    2009-05-12T23:59:59.000Z

    A metal-phosphate binder is provided. The binder may include an aqueous phosphoric acid solution, a metal-cation donor including a metal other than aluminum, an aluminum-cation donor, and a non-carbohydrate electron donor.

  19. The morphology of polymer modified asphalt and its relationship to rheology and durability

    E-Print Network [OSTI]

    Kraus, Zachary Rothman

    2008-10-10T23:59:59.000Z

    % % loglog * deg6010* deg6010 ?? , where d%A is the change in asphaltene in the asphalt (19). The other theory is that only the polar aromatics and napthene aromatics fluoresce when separated from the asphalt binder (16). Therefore as polar and napthene... aromatics change to asphaltenes with oxidative aging, the brightness would decrease. This brightness decrease would correspond to the increase in asphaltene with carbonyl area leading to a graph that looks like a chart for hardening susceptibility...

  20. High temperature performance of scrap tire rubber modified asphalt concrete

    SciTech Connect (OSTI)

    Coomarasamy, A. [Ministry of Transportation, Downsview, Ontario (Canada); Manolis, S.; Hesp, S. [Queen`s Univ., Kingston, Ontario (Canada)

    1996-12-31T23:59:59.000Z

    Wheel track rutting tests on mixes modified with 30 mesh, 80 mesh, and very fine colloidal crumb rubber particles show that a very significant improvement in performance occurs with a reduction in the rubber particle size. The SHRP binder test for rutting, which was originally developed for homogeneous systems only, does not predict the performance improvement for smaller rubber particles. If these new scrap rubber binder systems are to be used in pavements then rutting tests on the asphalt-aggregate mixture should be conducted in order to accurately predict high temperature performance.

  1. Project Information Form Project Title Evaluation of the Combined Effect of Recycled Asphalt Pavement (RAP),

    E-Print Network [OSTI]

    California at Davis, University of

    Pavement (RAP), Recycled Asphalt Shingles (RAS), and Different Virgin Binder Sources on Performance of Research Project As virgin material sources become increasingly scarce, and the volume of pavement material for pavement construction. The California Department of Transportation (Caltrans) has recently increased

  2. Asphalt Oxidation Kinetics and Pavement Oxidation Modeling

    E-Print Network [OSTI]

    Jin, Xin

    2012-07-16T23:59:59.000Z

    Most paved roads in the United States are surfaced with asphalt. These asphalt pavements suffer from fatigue cracking and thermal cracking, aggravated by the oxidation and hardening of asphalt. This negative impact of asphalt oxidation on pavement...

  3. Development of superior asphalt recycling agency: Phase 1, Technical feasibility. Technical progress report

    SciTech Connect (OSTI)

    Bullin, J.A.; Glover, C.J.; Davison, R.R.; Lin, Moon-Sun; Chaffin, J.; Liu, Meng; Eckhardt, C.

    1996-04-01T23:59:59.000Z

    About every 12 years, asphalt roads must be reworked, and this is usually done by placing thick layers (hot-mix overlays) of new material on top of failed material, resulting in considerable waste of material and use of new asphalt binder. A good recycling agent is needed, not only to reduce the viscosity of the aged material but also to restore compatibility. Objective is to establish the technical feasibility (Phase I) of determining the specifications and operating parameters for producing high quality recycling agents which will allow most/all the old asphalt-based road material to be recycled. It is expected that supercritical fractionation can be used. The advanced road aging simulation procedure will be used to study aging of blends of old asphalt and recycling agents.

  4. State of the practice: Design and construction of asphalt paving materials with crumb-rubber modifier. Final report

    SciTech Connect (OSTI)

    Heitzman, M.A.

    1992-05-01T23:59:59.000Z

    The document is a comprehensive overview of the terminology, processes, products, and applications of crumb rubber modifier (CRM) technology. The technology includes any use of scrap tire rubber in asphalt paving materials. In general, CRM technology can be divided into two categories--the wet process and the dry process. When CRM is incorporated into an asphalt paving material, it will modify the properties of the binder (asphalt rubber) and/or act as a rubber aggregate (rubber modified hot mix asphalt). The five concepts for using CRM discussed in the report are McDonald, PlusRide, generic dry, chunk rubber asphalt concrete, and continuous blending asphalt rubber. There are two principal unresolved engineering issues related to the use of CRM in asphalt paving materials. On the national level, the ability to recycle asphalt paving mixes containing CRM has not been demonstrated. At the State and local levels, these modified asphalt mixes must be field evaluated to establish expected levels of performance. The appendices provide guidelines for material specifications, mix design, and construction specifications. An experimental work plan for monitoring performance and a stack emission testing program are also included.

  5. Development of asphalts and pavements using recycled tire rubber. Phase 1, Technical feasibility. Technical progress report, September 1, 1994--August 31, 1995

    SciTech Connect (OSTI)

    Bullin, J.A.; Davison, R.R.; Glover, C.J. [and others

    1996-06-01T23:59:59.000Z

    About 285 million tires are discarded every year; less than 100 million are currently being recycled, with the rest being placed in landfills and other waste sites. A solution to reduce the littering of the environment is to use ground tire rubber in road construction. Currently, about 27 million tons of asphalt are used each year in road construction and maintenance of the country`s 2 million miles of roads. If all of the waste tire rubber could be combined with asphalt in road construction, it would displace less than 6% of the total asphalt used each year, yet could save about 60 trillion Btus annually. Purpose of this project is to provide data needed to optimize the performance of rubber-asphalt concretes. The first phase is to develop asphalts and recycling agents tailored for compatibility with ground tire rubber. Chapter 2 presents results on Laboratory Testing and Evaluation: fractionate asphalt material, reblending for aromatic asphalts, verifying optimal curing parameters, aging of blends, and measuring ductilities of asphalt-rubber binders. Chapter 3 focuses on Evaluating Mixture Characteristics (modified binders). Chapter 4 covers Adhesion Test Development (water susceptibility is also covered). The final chapter focuses on the Performance/Economic Update and Commercialization Plan.

  6. Identification of asphalt binder properties that affect cracking performance of hot mixed asphalt concrete pavements

    E-Print Network [OSTI]

    Hastings, Charles Patrick

    1997-01-01T23:59:59.000Z

    Specimen Failing in Indirect Tension Fatigue Cracking as a Function of Time for Texarkana Test Pavements 17 17 19 Figure 10. Figure I l. Figure 12. Texarkana EVA Test Section Texarkana Latex Test Section . Reflective Cracking as a Function... Results for Carbon Black Illustrating Increase in Molecular Size 69 Figure B5. Sherman GPC Results for Control Illustrating Increase in Molecular Size . 70 Page Figure B6. Sherman GPC Results for EVA Illustrating Increase in Molecular Size 70 Figure...

  7. An analysis of some properties of paving asphalts in Texas as they relate to pavement performance

    E-Print Network [OSTI]

    DuBose, Emmett Haygood

    1980-01-01T23:59:59.000Z

    51 73 93 115 115 DISTRESS AND CRACKING FACTORS THE PAVEMENT PERFORMANCE SYSTEM 5 CONCLUSIONS AND RECOMMENDATIONS CONCLUSIONS RECOMMENDATIONS REFERENCES . APPENDIX A: RAW DATA APPENDIX B: PAVEMENT PERFORMANCE VS. TIME CURVES APPENDIX C... harden1ng model. It had been shown in earlier research that excessive asphalt1c concrete binder hardening was a detrimental factor influencing certain types of pavement distress such as thermal cracking, raveling, fatigue cracking, and reflective crack...

  8. Char binder for fluidized beds

    DOE Patents [OSTI]

    Borio, Richard W. (Somers, CT); Accortt, Joseph I. (Simsbury, CT)

    1981-01-01T23:59:59.000Z

    An arrangement that utilizes agglomerating coal as a binder to bond coal fines and recycled char into an agglomerate mass that will have suitable retention time when introduced into a fluidized bed 14 for combustion. The simultaneous use of coal for a primary fuel and as a binder effects significant savings in the elimination of non-essential materials and processing steps.

  9. Asphalt Pavement Aging and Temperature Dependent Properties through a Functionally

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Asphalt Pavement Aging and Temperature Dependent Properties through a Functionally Graded ­ II ­ Asphalt Pavements ­ Effect of Aging ­ Simulations ­ Concluding Remarks #12;3 Objectives Develop) Correspondence Principle based formulation Application: Asphalt concrete pavements (Part II) #12;4 Asphalt

  10. Development of superior asphalt recycling agents. Phase 1, Technical feasibility. Final technical progress report

    SciTech Connect (OSTI)

    Bullin, J.A.; Davison, R.R.; Glover, C.J.; Chaffin, J.; Liu, M.; Madrid, R.

    1997-07-01T23:59:59.000Z

    After an introduction and a literature survey in Chap. 1, Chap. 2 describes the tasks, together with objectives and important results obtained for each task throughout the entire project. Chaps. 3 thru 7 detail work in developing a qualitative and quantitative knowledge of asphalt oxidation, composition dependence of asphalt properties, and guidelines for producing superior asphalt binders through composition control. They also detail the development of a kinetic model for asphalt oxidative aging and present an understanding of the composition dependence of asphalt oxidation as well as other performance-related properties. Chaps. 8 and 9 compare the aging performance of recycled blends produced using commercial recycling agents and industrial supercritical fractions as rejuvenating agents. Oxidative aging of the recycled blends were evaluated along with the performance of the recycled blends in terms of the strategic highway research program performance grading procedure. Chap. 10 summarizes the work completed in the areas of processing schemes development, projection updates, and scale-up and commercialization plans.

  11. Nanoscale Heterostructures and Thermoplastic Resin Binders: Novel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Nanoscale Heterostructures and Thermoplastic Resin Binders: Novel Lithium-Ion Anodes Nanoscale Heterostructures and Thermoplastic Resin Binders: Novel Lithium-Ion Anodes 2012 DOE...

  12. Method Of Characterizing An Electrode Binder

    DOE Patents [OSTI]

    Cocciantelli, Jean-Michel (Bordeaux, FR); Coco, Isabelle (Talence, FR); Villenave, Jean-Jacques (Talence, FR)

    1999-05-11T23:59:59.000Z

    In a method of characterizing a polymer binder for cell electrodes in contact with an electrolyte and including a current collector and a paste containing an electrochemically active material and said binder, a spreading coefficient of the binder on the active material is calculated from the measured angle of contact between standard liquids and the active material and the binder, respectively. An interaction energy of the binder with the electrolyte is calculated from the measured angle of contact between the electrolyte and the binder. The binder is selected such that the spreading coefficient is less than zero and the interaction energy is at least 60 mJ/m.sup.2.

  13. Mixture design and performance prediction of rubber-modified asphalt in Ohio. Final report

    SciTech Connect (OSTI)

    Liang, R.Y.

    1997-08-01T23:59:59.000Z

    Appropriate disposal of scrap tires has been a major environmental concern over the years, mainly due to potential fire and health hazards associated with uncontrolled stockpiling. Primarily driven by this environmental concern, the Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991 has required each State to begin incorporating scrap tire rubber into its asphalt paving materials. Although in the revision of the original ISTEA, the mandate has been eliminated, there remains a language of encouraging the use of crumb rubbers in asphalt paving materials. Ohio Department of Transportation (ODOT) desires to develop the mix design procedure, construction practice, and performance specifications for crumb rubber modified asphalt paving materials. This research was conducted to develop the needed design and construction guidance for meeting the ODOT anticipated needs. Specifically, the objectives of this research encompass the following scope: (1) investigation of the rheological properties of asphalt-rubber binder to determine optimum content of crumb rubber, (2) development of optimum mix design for various applications, including both wet and dry mix processes, (3) characterization of mechanical properties of recommended paving mixtures, including resilient modulus, fatigue cracking behavior, low-temperature thermal cracking resistance, water sensitivity test, incremental creep test and loaded wheel track test, and (4) comparison of performance of selected paving mixes.

  14. Electrochemical components employing polysiloxane-derived binders

    DOE Patents [OSTI]

    Delnick, Frank M.

    2013-06-11T23:59:59.000Z

    A processed polysiloxane resin binder for use in electrochemical components and the method for fabricating components with the binder. The binder comprises processed polysiloxane resin that is partially oxidized and retains some of its methyl groups following partial oxidation. The binder is suitable for use in electrodes of various types, separators in electrochemical devices, primary lithium batteries, electrolytic capacitors, electrochemical capacitors, fuel cells and sensors.

  15. Asphalt deposition in miscible floods

    E-Print Network [OSTI]

    Hasan, Syed Mir Ahmed

    1964-01-01T23:59:59.000Z

    : Petroleum Engineering ASPHALT DEPOSITION IN MISCIBLE FLOODS A Thesis By SYED MIR AHMED HASAN Approved as to style and content by: (Chairman of Committee) ommittee Member) Committee Member) Head of Department), (Co 'ttee Member) January, f964... Subject: Petroleum Engineering TABLE OF CONTENTS ABS TRAC T. Page 2. INTRODUCTION. 3 DESCRIPTION OF EQUIPMENT AND MATERIALS. . . . . , . 6 4. EXPERIMENTAL PROCEDURE 5. INTERPRETATION AND DISCUSSION OF RESULTS. . . . . . 13 6. CONCLUSIONS. 7...

  16. Winter Performance and Maintenance of Porous Asphalt Pavements

    E-Print Network [OSTI]

    Concrete (HSG-B)Porous Asphalt (HSG-C) #12;Cold Climate Performance Results #12;12 Porous Asphalt SurfaceWinter Performance and Maintenance of Porous Asphalt Pavements Robert M. Roseen, Ph.D., P.E., D impacts for new development and reverse impacts in areas with redevelopment. #12;Porous Asphalt Design

  17. Materials characterization of asphalt and polymer modified asphalt 

    E-Print Network [OSTI]

    Paramasivam, Mohan

    1992-01-01T23:59:59.000Z

    specimen mold made of aluminum ? ? ? ? ? ? ? ? ? ? - 28 5. Strain sweep of Santa Maria AC10/AR4000 at 100 rad/sec --- 33 6. Strain sweep of Conoco AC10 at 10 rad/sec ------------- 34 7. Stress relaxation modulus of AAM grade asphalt at 25'C --- 37 8.... The verification of Cox-Merz rule for Santa Maria AC6/AR2000 at 40'C- 9. The master curve of Santa Maria AC6/Muehlstein LDPE shifted to 25'C showing the errors 10. Master curve (G') of Santa Maria AC6 shifted to 25'C ? ? ? ? ? 43 11. Master curve of Santa...

  18. Materials characterization of asphalt and polymer modified asphalt

    E-Print Network [OSTI]

    Paramasivam, Mohan

    1992-01-01T23:59:59.000Z

    specimen mold made of aluminum ? ? ? ? ? ? ? ? ? ? - 28 5. Strain sweep of Santa Maria AC10/AR4000 at 100 rad/sec --- 33 6. Strain sweep of Conoco AC10 at 10 rad/sec ------------- 34 7. Stress relaxation modulus of AAM grade asphalt at 25'C --- 37 8.... The verification of Cox-Merz rule for Santa Maria AC6/AR2000 at 40'C- 9. The master curve of Santa Maria AC6/Muehlstein LDPE shifted to 25'C showing the errors 10. Master curve (G') of Santa Maria AC6 shifted to 25'C ? ? ? ? ? 43 11. Master curve of Santa...

  19. Binder enhanced refuse derived fuel

    DOE Patents [OSTI]

    Daugherty, Kenneth E. (Lewisville, TX); Venables, Barney J. (Denton, TX); Ohlsson, Oscar O. (Naperville, IL)

    1996-01-01T23:59:59.000Z

    A refuse derived fuel (RDF) pellet having about 11% or more particulate calcium hydroxide which is utilized in a combustionable mixture. The pellets are used in a particulate fuel bring a mixture of 10% or more, on a heat equivalent basis, of the RDF pellet which contains calcium hydroxide as a binder, with 50% or more, on a heat equivalent basis, of a sulphur containing coal. Combustion of the mixture is effective to produce an effluent gas from the combustion zone having a reduced SO.sub.2 and polycyclic aromatic hydrocarbon content of effluent gas from similar combustion materials not containing the calcium hydroxide.

  20. The effect of air blowing on the properties of rubber-modified asphalt binder

    E-Print Network [OSTI]

    Bauer, Shauna Erin

    1997-01-01T23:59:59.000Z

    . . . . . . . . H-2 The LSI and HSD mixing blades. . 19 21 H-3 Schematic of the Superpave? procedure. 28 HI-1 Complex viscosity data for Exxon AC-10 blends (10% TG-10WT) with varying A/N ratios . 32 HI-2 Carbonyl areas of Exxon AC-10 blends (10% TG-10WT...) with varying A/N ratios. 32 IH-3 Complex viscosity data for Exxon AC-10 blends (10% RS-80) with varying A/N ratios . . 35 HI-4 Carbonyl areas of Exxon AC-10 blends (10% RS-80) with varying A/N ratios. 35 HI-5 Complex viscosity data for Fina Demex Resin...

  1. Rapid determination of actinides in asphalt samples

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Maxwell, Sherrod L.; Culligan, Brian K.; Hutchison, Jay B.

    2014-01-12T23:59:59.000Z

    A new rapid method for the determination of actinides in asphalt samples has been developed that can be used in emergency response situations or for routine analysis If a radiological dispersive device (RDD), Improvised Nuclear Device (IND) or a nuclear accident such as the accident at the Fukushima Nuclear Power Plant in March, 2011 occurs, there will be an urgent need for rapid analyses of many different environmental matrices, including asphalt materials, to support dose mitigation and environmental clean up. The new method for the determination of actinides in asphalt utilizes a rapid furnace step to destroy bitumen and organicsmore »present in the asphalt and sodium hydroxide fusion to digest the remaining sample. Sample preconcentration steps are used to collect the actinides and a new stacked TRU Resin + DGA Resin column method is employed to separate the actinide isotopes in the asphalt samples. The TRU Resin plus DGA Resin separation approach, which allows sequential separation of plutonium, uranium, americium and curium isotopes in asphalt samples, can be applied to soil samples as well.« less

  2. Rapid determination of actinides in asphalt samples

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Maxwell, Sherrod L.; Culligan, Brian K.; Hutchison, Jay B.

    2014-01-12T23:59:59.000Z

    A new rapid method for the determination of actinides in asphalt samples has been developed that can be used in emergency response situations or for routine analysis If a radiological dispersive device (RDD), Improvised Nuclear Device (IND) or a nuclear accident such as the accident at the Fukushima Nuclear Power Plant in March, 2011 occurs, there will be an urgent need for rapid analyses of many different environmental matrices, including asphalt materials, to support dose mitigation and environmental clean up. The new method for the determination of actinides in asphalt utilizes a rapid furnace step to destroy bitumen and organics present in the asphalt and sodium hydroxide fusion to digest the remaining sample. Sample preconcentration steps are used to collect the actinides and a new stacked TRU Resin + DGA Resin column method is employed to separate the actinide isotopes in the asphalt samples. The TRU Resin plus DGA Resin separation approach, which allows sequential separation of plutonium, uranium, americium and curium isotopes in asphalt samples, can be applied to soil samples as well.

  3. TECHNICAL POLLUTION PREVENTION GUIDE FOR ASPHALT PREPARATION OPERATIONS

    E-Print Network [OSTI]

    Delivery, Storage and Cold Feed . . . . . . . . . . . . . 12 2.3.2 Liquid Asphalt Delivery, Storage . . . . . . . . . . . . . . . . . . . . . . 4 2 INDUSTRY PROFILE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 ASPHALT and Heating . . . . . . . . . . . . 12 2.3.3 Cold Feed Drying and Heating

  4. asphalt composition aplicacao: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Warm mix asphalt (WMA) is not a hot mix asphalt (HMA), it's just warm mix The WMA production temperature typically ranges from 100 to 140o C, whereas for HMA it ranges Das,...

  5. Controlling Thermal Properties of Asphalt Concrete and its Multifunctional Applications 

    E-Print Network [OSTI]

    Shi, Xijun

    2014-08-10T23:59:59.000Z

    ) by controlling thermal properties of the construction materials. To change thermal properties of asphalt concrete, expanded polypropylene (EPP) pellet and graphite were selected as the additives and mixed into asphalt concrete. Experimental tests are classified...

  6. Damage analysis in asphalt concrete mixtures based on parameter relationships 

    E-Print Network [OSTI]

    Song, Injun

    2004-11-15T23:59:59.000Z

    Asphalt pavements experience damage due to traffic loading under various environmental conditions. Damage can be caused by viscopl microcracks, fracture due to fatigue cracking, or fracture due to thermal cracking. Asphalt ...

  7. Battery components employing a silicate binder

    SciTech Connect (OSTI)

    Delnick, Frank M. (Albuquerque, NM); Reinhardt, Frederick W. (Albuquerque, NM); Odinek, Judy G. (Rio Rancho, NM)

    2011-05-24T23:59:59.000Z

    A battery component structure employing inorganic-silicate binders. In some embodiments, casting or coating of components may be performed using aqueous slurries of silicates and electrode materials or separator materials.

  8. California: Conducting Polymer Binder Boosts Storage Capacity...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - 10:17am Addthis Working with Nextval, Inc., Lawrence Berkeley National Laboratory (LBNL) developed a Conducting Polymer Binder for high-capacity lithium-ion batteries. With a...

  9. Disk-shaped Compact Tension Test for Asphalt Concrete Fracture

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Disk-shaped Compact Tension Test for Asphalt Concrete Fracture by M.P.Wagoner, W.G. Buttlar and G geometry is the ability to test cylindrical cores obtained from in-place asphalt concrete pavements finalizing the specimen geometry, a typical asphalt concrete surface mixture was tested at various

  10. Asphalt Pavement Aging and Temperature Dependent Properties through a Functionally

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Asphalt Pavement Aging and Temperature Dependent Properties through a Functionally Graded ­ Verification ­ Concluding Remarks Part ­ II (Companion presentation) ­ Asphalt Pavements ­ Effect of Aging: Asphalt concrete pavements (Part II) E1 E2 E3 Eh 1 2 3 h #12;Graded Finite Elements Graded Elements

  11. What's the future for rubberized asphalt

    SciTech Connect (OSTI)

    Not Available

    1991-04-01T23:59:59.000Z

    This article describes the debate over the use of rubberized asphalt for highway surfacing. The Department of Transportation claims that the process is too costly; that it presents potential air pollution, safety and health problems. They also claim that there is a lack of understanding between rubber and asphalt cement and of the recyclability of the product. The Legislative Commission on Solid Waste Management claims that the mixture performs as well or better than conventional asphalt at reduced thicknesses. In addition, there could be savings of local funds currently expended for regulation of tire dumps, fire-fighting and clean-up, vector control and scrap tire disposal costs ranging from $.50 to $2.00 per tire.

  12. The potential use of tar sand bitumen as paving asphalt

    SciTech Connect (OSTI)

    Petersen, J.C.

    1988-01-01T23:59:59.000Z

    In this paper several research reports describing the preparation of potential paving asphalts from tar sand bitumen are reviewed and the results of the studies compared. The tar sand asphalts described in the studies were prepared from 1) hot water-recovered bitumen from deposits near San Luis Obispo, California (Edna deposits), and deposits near Vernal and Sunnyside, Utah; and 2) bitumen recovered from the Northwest Asphalt Ridge deposits near Vernal, Utah, by both in situ steamflood and in situ combustion recovery processes. Important properties of the tar sand asphalts compare favorably with those of specification petroleum asphalts. Laboratory data suggest that some tar sand asphalts may have superior aging characteristics and produce more water-resistant paving mixtures than typical petroleum asphalts.

  13. The potential use of tar sand bitumen as paving asphalt

    SciTech Connect (OSTI)

    Petersen, J.C.

    1987-01-01T23:59:59.000Z

    The properties of several tar sand asphalts prepared in past studies by several different investigators were compared with each other and with the properties of petroleum asphalts. These results were reviewed and discussed with regard to the potential use of tar sand bitumen in pavement applications. The data show that tar sand bitumen has good potential for use in highway pavements that meet today's performance specifications. No deficiencies in the tar sand asphalts were found that would be expected to seriously affect performance. On the other hand, the data indicate that some tar sand asphalts may have superior aging characteristics, being relatively resistant to oxidative age hardening compared with typical petroleum asphalts. Asphalt-aggregate mixtures prepared using two tar sand asphalts also showed acceptable strength properties and excellent resistance to moisture-induced damage.

  14. Laboratory development of fourth generation sulphlex binders 

    E-Print Network [OSTI]

    Menon, Vivek Narayan

    1994-01-01T23:59:59.000Z

    of relative rate of thermal stress relaxation 95 13 Uniaxial compressive creep results at 104"F for the binders tested under this program 97 14 Unconfined compressive stress and strain at failure for the binders tested at 104'F and a strain rate of 0. 15... Strength Unconf. Compressive Strength Compressive Strength indirect Tensile Failure Test Tensile Stress S. Strain at Failure AASHTO T-165, T-167 Ref. 12 and Ref. 22 TABLE 4 Summary of the distress mechanisms and associated testing procedures of mixtures...

  15. The effect of asphalt deposition on recovery of oil by a pentane slug

    E-Print Network [OSTI]

    Bhagia, Nanik S

    1965-01-01T23:59:59.000Z

    ":ty reduction increases, in general, with the increase in amount of, asphalt contained ir the oil. The increases in recovery at breakthrough due to asphalt deposition were noted for four asphaltic crude oils and were compared to those of asphalt-free refined... substantial range, the gain in recovery at breakthrough of asphaltic oils over refined oils of the same viscosity increases with increase in size of slug used. This is attributed to more favorable mobility ratios resulting from asphalt deposition during...

  16. Asphalt Pavement Aging and TemperatureAsphalt Pavement Aging and Temperature Dependent Properties using a FunctionallyDependent Properties using a Functionally

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Asphalt Pavement Aging and TemperatureAsphalt Pavement Aging and Temperature Dependent Properties Analysis Time Integration Analysis Application Examples: Asphalt Pavement Summary and Conclusions #12) ­ Large fraction produced as hot-mix asphalt (HMA) ­ Most common form of pavement surfacing material (96

  17. Investigation of Noise and Durability Performance Trends for Asphaltic Pavement Surface Types: Three-Year Results

    E-Print Network [OSTI]

    Lu, Qing; Kohler, Erwin R.; Harvey, John T; Ongel, Aybike

    2009-01-01T23:59:59.000Z

    Trends for Asphalt Pavement Surface Types: First- andResults. University of California Pavement Research Center,Trends for Asphaltic Pavement Surface Types: First- and

  18. A novel technique for the production of cool colored concrete tile and asphalt shingle roofing products

    E-Print Network [OSTI]

    Levinson, Ronnen

    2010-01-01T23:59:59.000Z

    for providing concrete tiles, and Lou Hahn of GAF-Elk forof cool colored concrete tile and asphalt shingle roofingsolar-reflective nonwhite concrete tile and asphalt shingle

  19. Predicting the fatigue life of asphalt concrete overlay systems

    E-Print Network [OSTI]

    Germann, Frederick P

    1979-01-01T23:59:59.000Z

    ON CRACK GROWTH IN VISCOELASTIC MATERIALS C'HAPTER V - STATE OF THE ART Effect of Mix Variables on Fatigue and Cracking Resistance in Asphalt Concrete Pavements . Field Performance of Asphalt Overlays with Fabric Summary CHAPTER VI ? MATERIALS... LIFE OF AN ASPHALT OVERLAY CHAPTER X - CONCLUSIONS AND RECOMMENDATIONS REFERENCES APPENDIX A. CRACK TIP STRESS ANALYSIS APPENDIX B. CONSTRUCTION OF THE MASTER RESILIENT MODULUS AND MASTER CREEP COMPLIANCE CURVES APPENDIX C. CRACK GROWTH RATES, da...

  20. asphalt technology test: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and evaluated its performance when used in split mastic asphalt (SMA) mixture using Marshall Characteristic and dynamic charateristics (resilient modulus). As many as 90...

  1. anionic emulsified asphalt: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to Volucm Change... Gandhi, Poduru Mohandas Karamchand 1966-01-01 15 Life Cycle Assessment of Reclaimed Asphalt Pavement Energy Storage, Conversion and Utilization Websites...

  2. asphalt rock: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Corrections to Volucm Change... Gandhi, Poduru Mohandas Karamchand 1966-01-01 17 Life Cycle Assessment of Reclaimed Asphalt Pavement Energy Storage, Conversion and Utilization...

  3. asphaltic sand: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Corrections to Volucm Change... Gandhi, Poduru Mohandas Karamchand 1966-01-01 19 Life Cycle Assessment of Reclaimed Asphalt Pavement Energy Storage, Conversion and Utilization...

  4. asphalt concrete overlays: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    experimental results for concrete containing virgin limestone Paulino, Glaucio H. 71 Life Cycle Assessment of Reclaimed Asphalt Pavement Energy Storage, Conversion and Utilization...

  5. asphalt overlay design: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    these overlay networks. Routing and search in these overlay ... Cheng, Bow-Nan 69 Life Cycle Assessment of Reclaimed Asphalt Pavement Energy Storage, Conversion and Utilization...

  6. Full-Depth Pavement Reclamation with Foamed Asphalt: Final Report

    E-Print Network [OSTI]

    Jones, David; Fu, P.; Harvey, John T; Halles, F.

    2008-01-01T23:59:59.000Z

    University of California Pavement Research Center. (WP-2005-8 th Conference on Asphalt Pavements for Southern Africa (International Journal of Pavement Engineering, Vol 8, No

  7. asphalt concrete bases: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    large amounts of PS wastes in civil engineering constructions. Key words: Asphalt surfaces Disposable dishes Polystyrene (PS) Wastes Environment A. Akbari Motlagh; A....

  8. asphalt concrete soil: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    large amounts of PS wastes in civil engineering constructions. Key words: Asphalt surfaces Disposable dishes Polystyrene (PS) Wastes Environment A. Akbari Motlagh; A....

  9. Rheological Investigation of the Influence of Acrylate Polymers on the Modification of Asphalt

    E-Print Network [OSTI]

    Hussein, Ibnelwaleed A.

    and superior ACM properties when blended with the high asphaltenes Arabian asphalt. © 2006 Wiley Periodicals

  10. Field Manual for Crack Sealing in Asphalt Pavements

    E-Print Network [OSTI]

    Texas at Austin, University of

    Field Manual for Crack Sealing in Asphalt Pavements Yetkin Yildirim, Ahmed Qatan, and Jorge Prozzi January 2006 3208RedRiver Austin,TX78705 #12;Dr. Yetkin Yildirim, P.E. Director Texas Pavement for Crack Sealing in Asphalt Pavements #12;Performing Organization: Center for Transportation Research

  11. Recycling asphalt overview of more than 25 years of use

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Recycling asphalt overview of more than 25 years of use in France Y. Brosseaud ­ LCPC hal with ring for recycling ­ Average rate with high proportion : 30 to 50% ­ Used of rejuvenators (soft oil,version1-20May2011 #12;4 Hot recycling asphalt on mixing plant Recycling in place in hot or cold

  12. High temperature intermetallic binders for HVOF carbides

    SciTech Connect (OSTI)

    Shaw, K.G. [Xform, Inc., Cohoes, NY (United States); Gruninger, M.F.; Jarosinski, W.J. [Praxair Specialty Powders, Indianapolis, IN (United States)

    1994-12-31T23:59:59.000Z

    Gas turbines technology has a long history of employing the desirable high temperature physical attributes of ceramic-metallic (cermet) materials. The most commonly used coatings incorporate combinations of WC-Co and Cr{sub 3}C{sub 2}-NiCr, which have also been successfully utilized in other non-turbine coating applications. Increased turbine operating temperatures and other high temperature service conditions have made apparent the attractive notion of increasing the temperature capability and corrosion resistance of these coatings. In this study the intermetallic binder NiAl has been used to replace the cobalt and NiCr constituents of conventional WC and Cr{sub 3}C{sub 2} cermet powders. The composite carbide thermal spray powders were fabricated for use in the HVOF coating process. The structure of HVOF deposited NiAl-carbide coatings are compared directly to the more familiar WC-Co and Cr{sub 3}C{sub 2}-NiCr coatings using X-ray diffraction, back-scattered electron imaging (BEI) and electron dispersive spectroscopy (EDS). Hardness variations with temperature are reported and compared between the NiAl and Co/NiCr binders.

  13. Polyorganosilazane preceramic binder development for reaction bonded silicon nitride composites

    SciTech Connect (OSTI)

    Mohr, D.L.; Starr, T.L. [Georgia Tech Research Inst., Atlanta, GA (United States)

    1992-11-01T23:59:59.000Z

    This study has examined the use of two commercially available polyorganosilazanes for application as preceramic binders in a composite composed of silicon carbide fibers in a reaction bonded silicon nitride (RBSN) matrix. Ceramic monolithic and composite samples were produced. Density of monolithic and whisker reinforced RBSN samples containing the polysilazane binder was increased. Mercury intrusion porosimetry revealed a significant decrease in the pore sizes of samples containing a polyorganosilazane binder. Electron micrographs of samples containing the preceramic binder looked similar to control samples containing no precursor. Overall, incorporation of the polysilazane into monolithic and whisker reinforced samples resulted in significantly increased density and decreased porosity. Nitriding of the RBSN was slightly retarded by addition of the polysilazane binder. Samples with the preceramic binders contained increased contents of {alpha} versus {beta}-silicon nitride which may be due to interaction of hydrogen evolved from polysilazane pyrolysis with the nitriding process. Initial efforts to produce continuous fiber reinforced composites via this method have not realized the same improvements in density and porosity which have been observed for monolithic and whisker reinforced samples. Further, the addition of perceramic binder resulted in a more brittle fracture morphology as compared to similar composites made without the binder.

  14. Polyorganosilazane preceramic binder development for reaction bonded silicon nitride composites

    SciTech Connect (OSTI)

    Mohr, D.L.; Starr, T.L. (Georgia Tech Research Inst., Atlanta, GA (United States))

    1992-11-01T23:59:59.000Z

    This study has examined the use of two commercially available polyorganosilazanes for application as preceramic binders in a composite composed of silicon carbide fibers in a reaction bonded silicon nitride (RBSN) matrix. Ceramic monolithic and composite samples were produced. Density of monolithic and whisker reinforced RBSN samples containing the polysilazane binder was increased. Mercury intrusion porosimetry revealed a significant decrease in the pore sizes of samples containing a polyorganosilazane binder. Electron micrographs of samples containing the preceramic binder looked similar to control samples containing no precursor. Overall, incorporation of the polysilazane into monolithic and whisker reinforced samples resulted in significantly increased density and decreased porosity. Nitriding of the RBSN was slightly retarded by addition of the polysilazane binder. Samples with the preceramic binders contained increased contents of [alpha] versus [beta]-silicon nitride which may be due to interaction of hydrogen evolved from polysilazane pyrolysis with the nitriding process. Initial efforts to produce continuous fiber reinforced composites via this method have not realized the same improvements in density and porosity which have been observed for monolithic and whisker reinforced samples. Further, the addition of perceramic binder resulted in a more brittle fracture morphology as compared to similar composites made without the binder.

  15. Asphalt Pavement Aging and Temperature Dependent Properties through a Functionally Graded Viscoelastic Model, Part-II: Applications

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Asphalt Pavement Aging and Temperature Dependent Properties through a Functionally Graded simulation of functionally graded viscoelastic properties in asphalt concrete pavements. The techniques properties. A full-depth asphalt concrete pavement has been simulated to demonstrate the applicability

  16. Value-added utilisation of recycled concrete in hot-mix asphalt

    SciTech Connect (OSTI)

    Wong, Yiik Diew [School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore); Sun, Darren Delai [School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)]. E-mail: ddsun@ntu.edu.sg; Lai, Dickson [School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)

    2007-07-01T23:59:59.000Z

    The feasibility of partial substitution of granite aggregate in hot-mix asphalt (HMA) with waste concrete aggregate was investigated. Three hybrid HMA mixes incorporating substitutions of granite fillers/fines with 6%, 45% untreated, and 45% heat-treated concrete were evaluated by the Marshall mix design method; the optimum binder contents were found to be 5.3%, 6.5% and 7.0% of grade Pen 60/70 bitumen, respectively. All three hybrid mixes satisfied the Marshall criteria of the Singapore Land Transport Authority (LTA) W3B wearing course specification. The hybrid mix with 6% concrete fillers gave comparable resilient modulus and creep resistance as the conventional W3B mix, while hybrid mixes with higher concrete substitutions achieved better performance. X-ray diffraction (XRD) showed the distinct presence of free lime in the heat-treated concrete, while the scanning electron microscope (SEM) provided an in-depth perspective of the concrete grains in the HMA matrix. The results suggest feasible use of waste concrete as partial aggregate substitution in HMA.

  17. asphalt emulsions: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 Life Cycle Assessment of Reclaimed Asphalt Pavement Energy Storage, Conversion and Utilization...

  18. Characterization of Fatigue Cracking and Healing of Asphalt Mixtures

    E-Print Network [OSTI]

    Luo, Xue

    2012-07-16T23:59:59.000Z

    mixtures using an energy-based mechanistic approach. A controlled-strain repeated direct tension (RDT) test is selected to generate both fatigue cracking and permanent deformation in an asphalt mixture specimen. Fatigue cracking is separated from...

  19. Viscoelastic{Viscoplastic Damage Model for Asphalt Concrete

    E-Print Network [OSTI]

    Graham, Michael A.

    2010-10-12T23:59:59.000Z

    This thesis presents a continuum model for asphalt concrete incorporating non- linear viscoelasticity, viscoplasticity, mechanically-induced damage and moisture- induced damage. The Schapery single-integral viscoelastic model describes the nonlinear...

  20. asphaltic pavements microsurfacing: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    service have been... Lau, Chee Keung 1991-01-01 14 A utility evaluation of nondestructive testing devices used on asphalt concrete pavements Texas A&M University - TxSpace...

  1. asphalt pavement cracking: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    service have been... Lau, Chee Keung 1991-01-01 16 A utility evaluation of nondestructive testing devices used on asphalt concrete pavements Texas A&M University - TxSpace...

  2. asphalt pavement rap: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    service have been... Lau, Chee Keung 1991-01-01 14 A utility evaluation of nondestructive testing devices used on asphalt concrete pavements Texas A&M University - TxSpace...

  3. asphalt pavements: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    service have been... Lau, Chee Keung 1991-01-01 14 A utility evaluation of nondestructive testing devices used on asphalt concrete pavements Texas A&M University - TxSpace...

  4. Measurements of moisture suction in hot mix asphalt mixes 

    E-Print Network [OSTI]

    Kassem, Emad Abdel-Rahman

    2006-10-30T23:59:59.000Z

    with different bond energies and exhibited different field performance in terms of resistance to moisture damage. The suction measurements in sand asphalt specimens were used to calculate the moisture diffusion coefficient. The results revealed that water...

  5. Imparting Electrical Conductivity into Asphalt Composites Using Graphite 

    E-Print Network [OSTI]

    Baranikumar, Aishwarya

    2013-07-09T23:59:59.000Z

    publications showed the potential of graphite in mitigating the sudden transition. The study presented herein investigates possibility of precisely controlling the electrical conductivity of asphalt concrete only by adding filler size graphite powder. Nine...

  6. asphalt concrete performance: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Robert L. 2014-01-01 23 Establishing material properties for thin asphalt concrete surfaces on granular bases Texas A&M University - TxSpace Summary: of MASTER OF SCIENCE...

  7. Study of properties of sand asphalt using a torsional rheometer 

    E-Print Network [OSTI]

    Kasula, Lavan Kumar Reddy

    2004-11-15T23:59:59.000Z

    The modeling of Sand Asphalt and experiments to measure their rheological properties are of vital concern to many industrial processes especially highway and roadway pavement construction industry. A variety of hot mix ...

  8. Use of VFDs on Asphalt Plant Induced Draft Fans

    E-Print Network [OSTI]

    Anderson, G. R.; Case, P. L.; Lowery, J.

    2005-01-01T23:59:59.000Z

    Studies of 10 asphalt plants in the Intermountain Region have identified average ID fan energy savings of 68% by controlling airflow using Variable Frequency Drives (VFDs) on the fan motors in place of damper control (inlet or outlet). Average...

  9. A Model for the Nonlinear Mechanical Behavior of Asphalt Binders and its Application in Prediction of Rutting Susceptibility

    E-Print Network [OSTI]

    Srinivasa Parthasarathy, Atul

    2013-04-30T23:59:59.000Z

    . Wekumbura et al. /Materials and Structures 38 (2005) 755-760 288 A 13. v ? =" 11)0 58 I 0 . ~ r 9 0 .~ s 4 , , , ,~ :~ o.~" "*%~ . . . . . . 2s 4 I 0.01 1 t Is\\] 100 10000 Fig. 3 - Stress growth coefficient. 4% EVA-PMA, T=60~ y = 0.01s 4.... The magnitude of the stress growth coefficient is many times higher in the SBS-PMA than in the EVA-PMA. Typical overshoots are observed in both PMAs. At the highest shear ate (5s4), the EVA-PMA exhibits a small undershoot before reaching the asymptotic value...

  10. Fiber reinforcement of asphalt concrete using cow manure

    E-Print Network [OSTI]

    Bakar, Mohammed Abu

    1976-01-01T23:59:59.000Z

    . Specimens were made according to the Marshall Method of Mixture Design and tested for 1) Marshall Stability 2) Hveem Stability and 3) Hater Susceptibil- ity. Test results indicated that 4. 4 percent cow manure by volume of rhe total aggregate when used... Voids in Mineral Aggregate 11 LIST OF FIGURES Figures Page l. 2 l. 3 1. 4 1. 5 1. 6 Determination of Optimum Asphalt Content by the Marshall Method Determination of Optimum Asphalt Content by the Marshall Method Determination of Optimum...

  11. Characterization of road asphalt using Gel Permeation Chromatography

    E-Print Network [OSTI]

    Donaldson, Guy Randal

    1987-01-01T23:59:59.000Z

    inconsistent and inconsistent. Six were consistent, three were slightly inconsist nt, and three were inconsistent. To study the relationship between GPC and performance, samples from test pavements at three locations were obtained. Both original asphalts... Columns/Toluene/100 Nicroliters/ 7X 3 ' 2. Reproducibility of the Standard Asphalt in THF . ~ . . ~ . ~ . . . 500 and 50 Angstrom Columns/Toluene/100 Nicroliters/ 7X 19 3. 3. Differences in Refractive Index Detector Response. Exxon AC-10/Dumas Tank...

  12. Fatigue Resistance of Asphalt Mixtures Affected by Water Vapor Movement

    E-Print Network [OSTI]

    Tong, Yunwei

    2013-11-08T23:59:59.000Z

    aggregate contact due to dust particles on the aggregate surface. The rupture may occur because of the construction loads and operating traffic during construction, or could be environmentally induced by freeze-thaw cycling. Once a break in the film... design, environment and traffic, can be defined as progressive degradation of asphalt mixture material due to the presence of water. The occurrence of moisture damage in asphalt material is a rather complex phenomenon, which involves chemical, physical...

  13. Investigation of Conditions for Moisture Damage in Asphalt Concrete and Appropriate Laboratory Test Methods

    E-Print Network [OSTI]

    Lu, Qing

    2005-01-01T23:59:59.000Z

    of Asphalt Concrete-Physical Testing. ” Final Report, #930-of Asphalt Concrete: Chemical Testing. ” Alabama Highwayconcrete mixes, it is preferred to use a mix that would have good moisture resistance under laboratory testing

  14. Investigation of Conditions for Moisture Damage in Asphalt Concrete and Appropriate Laboratory Test Methods

    E-Print Network [OSTI]

    Harvey, John T; Lu, Qing

    2005-01-01T23:59:59.000Z

    of Asphalt Concrete-Physical Testing. ” Final Report no.of Asphalt Concrete: Chemical Testing. ” Alabama Highwayconcrete mixes, it is preferable to use a mix that would have good moisture resistance under laboratory testing

  15. A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications 

    E-Print Network [OSTI]

    Caro Spinel, Silvia

    2011-02-22T23:59:59.000Z

    The deleterious effect of moisture on the structural integrity of asphalt mixtures has been recognized as one of the main causes of early deterioration of asphalt pavements. This phenomenon, usually referred to as moisture damage, is defined...

  16. Experimental Study on Geocell-Reinforced Recycled Asphalt Pavement (RAP) Bases under Static and Cyclic Loading

    E-Print Network [OSTI]

    Thakur, Jitendra Kumar

    2011-01-13T23:59:59.000Z

    Recycled Asphalt Pavement (RAP) is a removed and reprocessed pavement material containing asphalt and aggregates which can be used as a base course material for pavement applications. Geocells are a three-dimensional interconnected honeycomb type...

  17. Asphalt compositions containing spurted polyolefin fibers with improved dispersibility in hydrocarbons

    SciTech Connect (OSTI)

    Jabloner, H.

    1987-07-07T23:59:59.000Z

    A cutback asphalt composition is described comprising asphalt and a hydrocarbon solvent. The improvement composition comprises a water-dispersible spurted polyolefin pulp having precipitated a natural rubber or synthetic elastomer that is swellable in hydrocarbon solvents.

  18. E-Print Network 3.0 - asphalt mix design Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Environmental Engineering, Arizona State University Collection: Engineering 35 Bi Oil i A h ltBio-Oil in Asphalt ApplicationsApplications Summary: tons of hot mix asphalt...

  19. Development of asphalts and pavements using recycled tire rubber. Phase 1: technical feasibility. Final report

    SciTech Connect (OSTI)

    Bullin, J.A.; Davison, R.R.; Glover, C.J. [and others

    1998-01-01T23:59:59.000Z

    This report documents the technical progress made on the development of asphalts and pavements using recycled tire rubber.

  20. A study of the mixing viscosity of asphalt in hot-mix production

    E-Print Network [OSTI]

    Khan, Md. Musharraf Hossain

    1961-01-01T23:59:59.000Z

    Gravity and Absorption of Aggregates. 36 Sieve Analysis of Combined Aggregates 37 Centrifuge Kerosene Equivalent Test Data for Estimated Optimum Asphalt Content . 38 Test Data on Molded Specimens for Optimum Asphalt Content 39 XIII . Test Data... there is available to be filled with asphalt. The Centrifuge Kerosene Equivalent (CKE) Test was performed to 11 determine the estimated optimum asphalt content as a percentage of the 10 The American Association of State Highway Officials, "Standard...

  1. Asphalt Roofing Shingles Into Energy Project Summary Report

    SciTech Connect (OSTI)

    Jameson, Rex, PE

    2008-04-28T23:59:59.000Z

    Based on a widely cited September, 1999 report by the Vermont Agency of Natural Resources, nearly 11 million tons of asphalt roofing shingle wastes are produced in the United States each year. Recent data suggests that the total is made up of about 9.4 million tons from roofing tear-offs and about 1.6 million tons from manufacturing scrap. Developing beneficial uses for these materials would conserve natural resources, promote protection of the environment and strengthen the economy. This project explored the feasibility of using chipped asphalt shingle materials in cement manufacturing kilns and circulating fluidized bed (CFB) boilers. A method of enhancing the value of chipped shingle materials for use as fuel by removing certain fractions for use as substitute raw materials for the manufacture of new shingles was also explored. Procedures were developed to prevent asbestos containing materials from being processed at the chipping facilities, and the frequency of the occurrence of asbestos in residential roofing tear-off materials was evaluated. The economic feasibility of each potential use was evaluated based on experience gained during the project and on a review of the well established use of shingle materials in hot mix asphalt. This project demonstrated that chipped asphalt shingle materials can be suitable for use as fuel in circulating fluidized boilers and cement kilns. More experience would be necessary to determine the full benefits that could be derived and to discover long term effects, but no technical barriers to full scale commercial use of chipped asphalt shingle materials in these applications were discovered. While the technical feasibility of various options was demonstrated, only the use of asphalt shingle materials in hot mix asphalt applications is currently viable economically.

  2. Organic binders for iron ore pelletization and steelmaking

    SciTech Connect (OSTI)

    Karkoska, D.; Sankey, E. [Allied Colloids, Suffolk, VA (United States); Anderson, R. [Eveleth Mines, MN (United States)

    1995-12-01T23:59:59.000Z

    Historically, bentonite has been used in the agglomeration process in North American iron ore plants. In 1986, Eveleth Mines replaced bentonite with Peridur, a carboxy methyl cellulose organic binder used in conjunction with 1% limestone. Since May of 1993, Allied Colloids` Alcotac FE8 has been used by Eveleth as the replacement for bentonite. This paper discusses the performance benefits obtained when bentonite was replaced with an organic binder. These totally synthetic binders are used in conjunction with limestone. The benefits of organic binders are: improved metallurgical parameters of the fired pellet, especially the reducibility, which results in more efficient use of gases in the blast furnace; reduced silica in the pellet, in the case of Eveleth Mines this was a reduction of 0.5%, a lower silica pellet reduces slag in the blast furnace; increased production in both the agglomeration/induration and steelmaking processes; and a decrease in coke consumption.

  3. Novel Binders and Methods for Agglomeration of Ore

    SciTech Connect (OSTI)

    S. K. Kawatra; T. C. Eisele; K. A. Lewandowski; J. A. Gurtler

    2006-12-31T23:59:59.000Z

    Many metal extraction operations, such as leaching of copper, leaching of precious metals, and reduction of metal oxides to metal in high-temperature furnaces, require agglomeration of ore to ensure that reactive liquids or gases are evenly distributed throughout the ore being processed. Agglomeration of ore into coarse, porous masses achieves this even distribution of fluids by preventing fine particles from migrating and clogging the spaces and channels between the larger ore particles. Binders are critically necessary to produce agglomerates that will not break down during processing. However, for many important metal extraction processes there are no binders known that will work satisfactorily. Primary examples of this are copper heap leaching, where there are no binders that will work in the acidic environment encountered in this process, and advanced ironmaking processes, where binders must function satisfactorily over an extraordinarily large range of temperatures (from room temperature up to over 1200 C). As a result, operators of many facilities see a large loss of process efficiency due to their inability to take advantage of agglomeration. The large quantities of ore that must be handled in metal extraction processes also means that the binder must be inexpensive and useful at low dosages to be economical. The acid-resistant binders and agglomeration procedures developed in this project will also be adapted for use in improving the energy efficiency and performance of a broad range of mineral agglomeration applications, particularly heap leaching and advanced primary ironmaking. This project has identified several acid-resistant binders and agglomeration procedures that can be used for improving the energy efficiency of heap leaching, by preventing the ''ponding'' and ''channeling'' effects that currently cause reduced recovery and extended leaching cycle times. Methods have also been developed for iron ore processing which are intended to improve the performance of pellet binders, and have directly saved energy by increasing filtration rates of the pelletization feed by as much as 23%.

  4. NOVEL BINDERS AND METHODS FOR AGGLOMERATION OF ORE

    SciTech Connect (OSTI)

    S.K. Kawatra; T.C. Eisele; J.A. Gurtler; C.A. Hardison; K. Lewandowski

    2004-04-01T23:59:59.000Z

    Many metal extraction operations, such as leaching of copper, leaching of precious metals, and reduction of metal oxides to metal in high-temperature furnaces, require agglomeration of ore to ensure that reactive liquids or gases are evenly distributed throughout the ore being processed. Agglomeration of ore into coarse, porous masses achieves this even distribution of fluids by preventing fine particles from migrating and clogging the spaces and channels between the larger ore particles. Binders are critically necessary to produce agglomerates that will not break down during processing. However, for many important metal extraction processes there are no binders known that will work satisfactorily. Primary examples of this are copper heap leaching, where there are no binders that will work in the acidic environment encountered in this process, and advanced ironmaking processes, where binders must function satisfactorily over an extraordinarily large range of temperatures (from room temperature up to over 1200 C). As a result, operators of many facilities see a large loss of process efficiency due to their inability to take advantage of agglomeration. The large quantities of ore that must be handled in metal extraction processes also means that the binder must be inexpensive and useful at low dosages to be economical. The acid-resistant binders and agglomeration procedures developed in this project will also be adapted for use in improving the energy efficiency and performance of a broad range of mineral agglomeration applications, particularly heap leaching and advanced primary ironmaking.

  5. Use of recycled chunk rubber asphalt concrete (CRAC) on low volume roads and use of recycled crumb rubber modifier in asphalt pavements. Final report, June 1993-June 1995

    SciTech Connect (OSTI)

    Hossain, M.; Funk, L.P.; Sadeq, M.A.; Marucci, G.

    1995-06-01T23:59:59.000Z

    The major objective of this project was to formulate a Chunk Rubber Asphalt Concrete (CRAC) mix for use on low volume roads. CRAC is a rubber modified asphalt concrete product produced by the `dry process` where rubber chunks of 1/2 inch size are used as aggregate in a cold mix with a type C fly ash. The second objective of this project was to develop guidelines concerning the use of rubber modified asphalt concrete hot mix to include: (1) Design methods for use of asphalt-rubber mix for new construction and overlay, (2) Mix design method for asphalt-rubber, and (3) Test method for determining the amount of rubber in an asphalt-rubber concrete for quality control purposes.

  6. A study of the effects of limestone rock asphalt screenings on the structural properties of hot-mix asphaltic concrete made with siliceous materials 

    E-Print Network [OSTI]

    Albritton, Oscar Willard

    1958-01-01T23:59:59.000Z

    LiSRagy pptt8pp py IEXAa A STUDY OF THE EFFECTS OF LIMESTONE ROCK ASPHALT SCREENINGS ON THE STRUCTURAL PROPERTIES OF HOT-MIX ASPHALTIC CONCRETE MADE WITH SILICEOUS MATERIALS A Thesis By OSCAR WILLARD. AQBRITTON Submitted to the Graduate... ON THE STRUCTURAL PROPERTIES OF HOT-MIX ASPHALTIC CONCRETE MADE WITH SILICEOUS MATERIALS A Thesis By OSCAR WILLARD ALBRITTON Approved as to Style and Content by: Chairman of Committee ead of Departme t August 1958 ACKNOWLEDGMENTS Acknowledgment is due...

  7. Asphalt roofing industry Fourier transform infrared spectroscopy modified bitumen

    SciTech Connect (OSTI)

    NONE

    1999-07-01T23:59:59.000Z

    A Request for Emissions Testing at Four Asphalt Roofing and Processing Facilities was submitted by the US EPA Emission Standards Division (ESD), Minerals and Inorganic Chemicals Group (MICG) to the Emission Measurement Center (EMC). The Emission Measurement Center directed Midwest Research Institute (MRI) to conduct emissions testing at asphalt roofing plants. This report presents results of MRI`s FTIR and Method 25A testing conducted at US Intec in Port Arthur, Texas. The field measurements were performed in September 1997 under several test conditions for both controlled and uncontrolled emissions.

  8. Automated titration method for use on blended asphalts

    DOE Patents [OSTI]

    Pauli, Adam T. (Cheyenne, WY); Robertson, Raymond E. (Laramie, WY); Branthaver, Jan F. (Chatham, IL); Schabron, John F. (Laramie, WY)

    2012-08-07T23:59:59.000Z

    A system for determining parameters and compatibility of a substance such as an asphalt or other petroleum substance uses titration to highly accurately determine one or more flocculation occurrences and is especially applicable to the determination or use of Heithaus parameters and optimal mixing of various asphalt stocks. In a preferred embodiment, automated titration in an oxygen gas exclusive system and further using spectrophotometric analysis (2-8) of solution turbidity is presented. A reversible titration technique enabling in-situ titration measurement of various solution concentrations is also presented.

  9. Novel Binders and Methods for Agglomeration of Ore

    SciTech Connect (OSTI)

    S. K. Kawatra; T. C. Eisele; J. A. Gurtler

    2004-03-31T23:59:59.000Z

    Many metal extraction operations, such as leaching of copper, leaching of precious metals, and reduction of metal oxides to metal in high-temperature furnaces, require agglomeration of ore to ensure that reactive liquids or gases are evenly distributed throughout the ore being processed. Agglomeration of ore into coarse, porous masses achieves this even distribution of fluids by preventing fine particles from migrating and clogging the spaces and channels between the larger ore particles. Binders are critically necessary to produce agglomerates that will not break down during processing. However, for many important metal extraction processes there are no binders known that will work satisfactorily. A primary example of this is copper heap leaching, where there are no binders that will work in the acidic environment encountered in this process. As a result, operators of acidic heap-leach facilities see a large loss of process efficiency due to their inability to take advantage of agglomeration. The large quantities of ore that must be handled in metal extraction processes also means that the binder must be inexpensive and useful at low dosages to be economical. The acid-resistant binders and agglomeration procedures developed in this project will also be adapted for use in improving the energy efficiency and performance of other agglomeration applications, particularly advanced primary ironmaking.

  10. A Methodology of Quantifying Precipitation Exposure for Wet-Weather Collisions and Evaluating Effectiveness of Open-Grade Asphalt Concrete as a Countermeasure

    E-Print Network [OSTI]

    Chan, Ching-Yao; Jin, Eui-Jae; Oh, Soon Mi; Ragland, David R

    2010-01-01T23:59:59.000Z

    Open-graded Asphaltic Concrete Friction Courses in Arizona.for Open-Graded Asphalt Concrete (OGAC) Wearing Courses.of Open-Grade Asphalt Concrete as a Countermeasure Ching-Yao

  11. asphalt technology development: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    asphalt technology development First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Development and...

  12. asphalt based materials: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    asphalt based materials First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Establishing material...

  13. Controlling Thermal Properties of Asphalt Concrete and its Multifunctional Applications

    E-Print Network [OSTI]

    Shi, Xijun

    2014-08-10T23:59:59.000Z

    of the thermally modified asphalt mixtures on the surface temperature of pavements and bridges, a series of heat transfer analysis were conducted using the finite difference heat transfer model. In addition, a case study of a building using EPP modified cement...

  14. Measurements of moisture suction in hot mix asphalt mixes

    E-Print Network [OSTI]

    Kassem, Emad Abdel-Rahman

    2006-10-30T23:59:59.000Z

    The presence of moisture in hot mix asphalt (HMA) causes loss of strength and durability of the mix, which is referred to as moisture damage. This study deals with the development of experimental methods for measuring total suction in HMA, which can...

  15. asphalt construction premature: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    asphalt construction premature First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Moisture Diffusion in...

  16. Electronically conductive polymer binder for lithium-ion battery electrode

    DOE Patents [OSTI]

    Liu, Gao; Xun, Shidi; Battaglia, Vincent S; Zheng, Honghe

    2014-10-07T23:59:59.000Z

    A family of carboxylic acid group containing fluorene/fluorenon copolymers is disclosed as binders of silicon particles in the fabrication of negative electrodes for use with lithium ion batteries. These binders enable the use of silicon as an electrode material as they significantly improve the cycle-ability of silicon by preventing electrode degradation over time. In particular, these polymers, which become conductive on first charge, bind to the silicon particles of the electrode, are flexible so as to better accommodate the expansion and contraction of the electrode during charge/discharge, and being conductive promote the flow battery current.

  17. Stability of polymer binders in Li-O2 batteries. | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Stability of polymer binders in Li-O2 batteries. Stability of polymer binders in Li-O2 batteries. Abstract: A number of polymers with various chemical structures were studied as...

  18. The Effects of Various Conductive Additive and Polymeric Binder Contents on the Performance of a Lithium-ion Composite

    E-Print Network [OSTI]

    Liu, G.

    2008-01-01T23:59:59.000Z

    of Various Conductive Additive and Polymeric Binder Contentsblack (AB), a nano-conductive additive, and polyvinylideneon binder or conductive additive properties were typically

  19. Novel anti-flooding poly(dimethylsiloxane) (PDMS) catalyst binder for microbial fuel cell cathodes

    E-Print Network [OSTI]

    Novel anti-flooding poly(dimethylsiloxane) (PDMS) catalyst binder for microbial fuel cell cathodes) was tested as a catalyst binder in a microbial fuel cell. 2012 Keywords: Microbial fuel cell Poly(dimethylsiloxane) Anti-flooding Catalyst binder a b s t r a c

  20. Contribution of Building Materials to Urban Wet-Weather Pollutant

    E-Print Network [OSTI]

    Clark, Shirley E.

    and to prevent stripping of asphalt from binders. · Fillers include carbon black from pyrolized tires. Asphalt · Khandal et al. (1995) investigated incorporation recycled asphalt pavement (RAP) into new

  1. Microstructure through an ice sheet Tobias Binder1, a

    E-Print Network [OSTI]

    Garbe, Christoph S.

    Microstructure through an ice sheet Tobias Binder1, a , Ilka Weikusat2, b , Johannes Freitag2, c.Garbe@iwr.uni-heidelberg.de, e Dietmar.Wagenbach@iup.uni-heidelberg.de, f Sepp.Kipfstuhl@awi.de Keywords: Ice, microstructure characterization, grain boundary curvature, image processing Abstract. Ice cores through an ice sheet can

  2. The use of sulfer modified bottom ash (SMBA) as an aggregate in asphaltic mixtures

    E-Print Network [OSTI]

    Chimakurthy, Harshavardhan

    1998-01-01T23:59:59.000Z

    , bottom ash is lighter in weight and generally much cheaper than conventional quality aggregates such as limestone, sand and gravel. This research was designed to up-grade the load-bearing charactcnstics of bottom ash and maximize its usc m asphaltic... and gravel. According to a study done by Hafizuddin Ahmad in 1974, sulfur was used extensively in sand-asphalt sulfur to upgrade marginal aggregates for use in asphaltic mixtures, was developed at Texas Transportation Institute (TT1) (JO). TTI's work...

  3. Tertiary nitrogen heterocyclic material to reduce moisture-induced damage in asphalt-aggregate mixtures

    DOE Patents [OSTI]

    Plancher, Henry (Laramie, WY); Petersen, Joseph C. (Laramie, WY)

    1982-01-01T23:59:59.000Z

    Asphalt-aggregate roads crack when subjected to freezing and thawing cycles. Herein, the useful life of asphalts are substantially improved by a minor amount of a moisture damage inhibiting agent selected from compounds having a pyridine moiety, including acid salts of such compounds. A shale oil fraction may serve as the source of the improving agent and may simply be blended with conventional petroleum asphalts.

  4. Novel Binders and Methods for Agglomeration of Ore

    SciTech Connect (OSTI)

    S. K. Kawatra; T. C. Eisele; K. A. Lewandowski; J. A. Gurtler

    2006-09-30T23:59:59.000Z

    Heap leaching is one of the methods being used to recover metal from low grade ore deposits. The main problem faced during heap leaching is the migration of fine grained particles through the heap, forming impermeable beds which result in poor solution flow. The poor solution flow leads to less contact between the leach solution and the ore, resulting in low recovery rates. Agglomeration of ore into coarse, porous masses prevents fine particles from migrating and clogging the spaces and channels between the larger ore particles. Currently, there is one facility in the United States which uses agglomeration. This operation agglomerates their ore using leach solution (raffinate), but is still experiencing undesirable metal recovery from the heaps due to agglomerate breakdown. The use of a binder, in addition to the leach solution, during agglomeration would help to produce stronger agglomerates that did not break down during processing. However, there are no known binders that will work satisfactorily in the acidic environment of a heap, at a reasonable cost. As a result, operators of many facilities see a large loss of process efficiency due to their inability to take advantage of agglomeration. Increasing copper recovery in heap leaching by the use of binders and agglomeration would result in a significant decrease in the amount of energy consumed. Assuming that 70% of all the leaching heaps would convert to using agglomeration technology, as much as 1.64*10{sup 12} BTU per year would be able to be saved if a 25% increase in copper recovery was experienced, which is equivalent to saving approximately 18% of the energy currently being used in leaching heaps. For every week a leach cycle was decreased, a savings of as much as 1.23*10{sup 11} BTU per week would result. This project has identified several acid-resistant binders and agglomeration procedures. These binders and experimental procedures will be able to be used for use in improving the energy efficiency of heap leaching.

  5. The use of HPGPC for determination of MWD of asphalt cement - A spectrophotometric vs. gravimetric finish

    SciTech Connect (OSTI)

    Bishara, S.W.; McReynolds, R.L. (Kansas Dept. of Transportation, Topeka (United States))

    1990-07-01T23:59:59.000Z

    A comparison between spectrophotometric and gravimetric methods to study MWD of asphalt is presented. Spectrophotometry suffers from not detecting saturated compounds, as well as from variation of molar absorptivity during analysis. To address these shortcoming, the whole asphalt sample is fractionated, and the relative molar absorptivity determined for each fraction. Using another sample weight of the whole asphalt, the saturates are separated, and injected to get their MWD using refractive index detection. This information, when used to mathematically treat the whole asphalt distribution data, can correct the latter to include saturates as well, but can only partially account for continuous variation of the molar absorptivity.

  6. Experimental Study on Geocell-Reinforced Flexible Pavements with Recycled Asphalt Pavement (RAP) Bases under Cyclic Loading

    E-Print Network [OSTI]

    Acharya, B. S.

    2011-12-31T23:59:59.000Z

    ABSTRACT The reprocessed old hot mix asphalt (HMA) concrete also called "Recycled Asphalt Pavement (RAP)", if used to build new roads or to maintain existing roads, would have several benefits, such as preservation of natural resources for future...

  7. Asphalt Pavement Aging and Temperature Dependent Properties through a Functionally Graded Viscoelastic Model, Part-I: Development,

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Asphalt Pavement Aging and Temperature Dependent Properties through a Functionally Graded simulations, correspondence principle, finite-element method Abstract. Asphalt concrete pavements to climatic conditions are the major cause of such graded non-homogeneity. Current pavement analysis

  8. Microstructural Characterization of the Chemo-mechanical Behavior of Asphalt in Terms of Aging and Fatigue Performance Properties

    E-Print Network [OSTI]

    Allen, Robert Grover

    2013-03-27T23:59:59.000Z

    The study of asphalt chemo-mechanics requires a basic understanding of the physical properties and chemical composition of asphalt and how these properties are linked to changes in performance induced by chemical modifications. This work uniquely...

  9. Integrated coke, asphalt and jet fuel production process and apparatus

    DOE Patents [OSTI]

    Shang, Jer Y. (McLean, VA)

    1991-01-01T23:59:59.000Z

    A process and apparatus for the production of coke, asphalt and jet fuel m a feed of fossil fuels containing volatile carbon compounds therein is disclosed. The process includes the steps of pyrolyzing the feed in an entrained bed pyrolyzing means, separating the volatile pyrolysis products from the solid pyrolysis products removing at least one coke from the solid pyrolysis products, fractionating the volatile pyrolysis products to produce an overhead stream and a bottom stream which is useful as asphalt for road pavement, condensing the overhead stream to produce a condensed liquid fraction and a noncondensable, gaseous fraction, and removing water from the condensed liquid fraction to produce a jet fuel-containing product. The disclosed apparatus is useful for practicing the foregoing process. the process provides a useful method of mass producing and jet fuels from materials such as coal, oil shale and tar sands.

  10. Microstructural Characterization of Material Properties and Damage in Asphalt Composites 

    E-Print Network [OSTI]

    Mohammad Khorasani, Sara

    2013-05-03T23:59:59.000Z

    by NPRP grant # 08-310-2-110 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. vi TABLE OF CONTENTS Page ABSTRACT... ........................................................................................................................ 17 3D Experimental Investigation of the Microstructure of Cement Pastes Using Synchrotron X-Ray Microtomography (?CT) .......................................................... 18 Dynamic Modulus Simulation of the Asphalt Concrete Using the X...

  11. Evaluation of Rexene polymers in hot mixed asphalt concrete

    E-Print Network [OSTI]

    Rodriguez, Mary Anne Reese

    1991-01-01T23:59:59.000Z

    -- polyethylene, polypropylene, ethylene-vinyl acetate (EVA) and ethylene-propylene rubbers -- show increased stability and stiffness modulus, increased resistance to permanent deformation and lower temperature susceptibility. Carpenter and VanDam (14... five asphalt additives: block copolymer rubber, SBR latex, EVA, polyethylene and carbon black. Mixture stability, stiffness, tensile strength and resistance to fatigue, thermal cracking, permanent deformation and moisture damage were tested. Three...

  12. A novel method of bitumen extraction from asphalt pavement

    SciTech Connect (OSTI)

    Houser, T.J. (Western Michigan Univ., Kalamazoo (United States))

    1990-07-01T23:59:59.000Z

    A new method of extracting bitumen from asphalt pavement mixtures has been developed which does not require chlorinated or aromatic compounds for solvents. The preferred solvent is cyclohexane (although cyclopentane may be used) at high temperatures and pressures. The new method requires equipment that is less costly than the centrifuge method currently used and takes less time than extractions with Bioact but more time than when chlorocompounds are used.

  13. Low-loss binder for hot pressing boron nitride

    DOE Patents [OSTI]

    Maya, Leon (Oak Ridge, TN)

    1991-01-01T23:59:59.000Z

    Borazine derivatives used as low-loss binders and precursors for making ceramic boron nitride structures. The derivative forms the same composition as the boron nitride starting material, thereby filling the voids with the same boron nitride material upon forming and hot pressing. The derivatives have a further advantage of being low in carbon thus resulting in less volatile byproduct that can result in bubble formation during pressing.

  14. Effect of pavement temperature on the macrotexture of a semidense asphalt surface

    E-Print Network [OSTI]

    Boyer, Edmond

    Effect of pavement temperature on the macrotexture of a semidense asphalt surface J. Luong, M the pavement temperature could change the texture surface of the pavement. The aim of this work is to analyze the influence of the surface temperature on the macrotexture of a semidense asphalt pavement located in an urban

  15. Dynamic Effects on Moisture Transport in Asphalt Concrete M. Emin Kutay1

    E-Print Network [OSTI]

    Aydilek, Ahmet

    Dynamic Effects on Moisture Transport in Asphalt Concrete M. Emin Kutay1 and Ahmet H. Aydilek2 2007 133:7 406 CE Database subject headings: Moisture; Asphalt concrete; Dynamics; Hydraulic and Magdalena 2002 ; however, limited research has been conducted in modeling dynamic flow in porous geomedia

  16. RESEARCH REPORT 987-9 ASPHALT OVERLAY DESIGN METHODS FOR RIGID

    E-Print Network [OSTI]

    Texas at Austin, University of

    by using a fractional factorial design. An analysis of variance (ANOVA) was performed to identifyRESEARCH REPORT 987-9 ASPHALT OVERLAY DESIGN METHODS FOR RIGID PAVEMENTS CONSIDERING RUTTING's Catalog No. 5. Report Date October 1998 4. Title and Subtitle ASPHALT OVERLAY DESIGN METHODS FOR RIGID

  17. Characterization of asphalt cements modified with crumbed rubber from discarded tires. Final report

    SciTech Connect (OSTI)

    Daly, W.H.; Negulescu, I.I.

    1994-11-01T23:59:59.000Z

    The potential legislative requirement for incorporation of scrap rubber into asphalt blends mandated a thorough evaluation of the influence of scrap rubber additives on the physical properties and aging characteristics of rubber/asphalt blends. Blends with up to 20 percent ground vulcanized rubber (both crumb and 200 mesh powder particles) from recycled tires were prepared with asphalt cements of various grades (AC5 - AC30) and evaluated using DMA. Blends produced from powdered rubber particles exhibited Newtonian behavior at high temperatures; similar behavior was not observed with crumb rubber blends. The mechanical properties of asphalt-rubber blends depend upon the concentration of rubber additives, the particle dimensions, and the chemical composition of the asphalt.

  18. A study of the effects of limestone rock asphalt screenings on the structural properties of hot-mix asphaltic concrete made with siliceous materials

    E-Print Network [OSTI]

    Albritton, Oscar Willard

    1958-01-01T23:59:59.000Z

    Society for Testing Materials, Phila. , Pa. 15 PROCEDURE To limit the wide variations of aggregate grading, specifica- tions of the Texas Highway Department for a Type "D" Hot-Mix, Hot- Laid, Asphaltic Concrete were used as a guide in the design... Standards on Mineral Aggregates, Concrete, and Nonbituminous Highway Materials, American Society for Testing Materials, Phila, , Pa. Benson, Fred J, and Bh. Subbaraju, "Specific Gravity of Aggregates in Asphaltic Paving Mixtures, " Texas Engineering...

  19. Preparation of Solid Alkaline Fuel Cell Binders Based on Fluorinated Poly(diallyldimethylammonium chloride)s

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Preparation of Solid Alkaline Fuel Cell Binders Based on Fluorinated Poly to be used in a Solid Alkaline Fuel Cell (SAFC) needs to (i) be insoluble in both aqueous solutions,10% > 320 °C). When used in a fuel cell as a binder in the membrane-electrodes assembly (MEA

  20. The Effects of Various Conductive Additive and Polymeric Binder Contents on the Performance of a Lithium-ion Composite

    E-Print Network [OSTI]

    Liu, G.

    2008-01-01T23:59:59.000Z

    conductive additive, and polyvinylidene difluoride (PVDF), a polymer binder) on the power performance of lithium-ion composite

  1. Influence of fundamental material properties and air void structure on moisture damage of asphalt mixes 

    E-Print Network [OSTI]

    Arambula Mercado, Edith

    2009-05-15T23:59:59.000Z

    parameters were obtained using mechanical tests and surface energy measurements. The microstructure of asphalt mixes prepared in the laboratory having different air void structures was captured using X-ray CT, and image analysis techniques were used...

  2. A Continuum Coupled Moisture-mechanical Constitutive Model for Asphalt Concrete

    E-Print Network [OSTI]

    Shakiba, Maryam

    2013-12-09T23:59:59.000Z

    procedure and give insight into the various damage inducing mechanisms in asphalt concrete. In this dissertation, thermo-hygro-mechanical constitutive relationships are developed based on the principle of virtual power and laws of thermodynamics in order...

  3. Chip Seals for Asphalt Concrete Pavements: A Proposed Emulsion Residue Specification and Existing Pavement Texture Evaluation

    E-Print Network [OSTI]

    Hoyt, Denise

    2012-07-16T23:59:59.000Z

    Chip seals are a pavement surface treatment used for maintaining asphalt concrete pavements. National Cooperative Highway Research Program (NCHRP) Project 14-17 was performed to produce a national Chip Seal Manual which would consolidate the best...

  4. A program to design asphalt concrete overlays to mitigate reflection cracking

    E-Print Network [OSTI]

    Satyanarayana Rao, Sindhu

    2002-01-01T23:59:59.000Z

    of the research are to understand the occurrence and behavior of reflection cracking and for devising ways of mitigating them and to put together an effective and complete package of computer programs to design asphalt concrete overlays. Another primary objective...

  5. Laboratory evaluation of crumb rubber asphalt concrete mixtures using the concepts of SMA mixtures 

    E-Print Network [OSTI]

    Rebala, Somasekhar Reddy

    1994-01-01T23:59:59.000Z

    Eight CRM asphalt concrete mixtures were evaluated using AAMAS characterization procedures: Four wet-process mixtures and four dry-process mixtures. These mixtures were compared to a conventional dense graded mixture. It was determined that CRM has...

  6. Automated Protocol for the Analysis of Dynamic Mechanical Analyzer Date from Fine Aggregate Asphalt Mixes 

    E-Print Network [OSTI]

    Cavalcanti De Sousa, Pedro

    2010-10-12T23:59:59.000Z

    Fatigue cracking and moisture damage are two important modes of distresses in asphalt pavements. Recently, the Dynamic Mechanical Analyzer (DMA) was used to characterize fatigue cracking and evaluate the effects of moisture ...

  7. An investigation of three problems concerning the analysis of airborne asphalt fumes

    E-Print Network [OSTI]

    Laird, Larry Teal

    1981-01-01T23:59:59.000Z

    AN INVESTIGATION OF THREE PROBLEMS CONCERNING THE ANALYSIS OF AIRBORNE ASPHALT FUMES A Thesis by LARRY TEAL LAIRD Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE May 1981 Major Subject: Industrial Hygiene AN INVESTIGATION OF THREE PROBLEMS CONCERNING THE ANALYSIS OF AIRBORNE ASPHALT FUMES A Thesis by LARRY T. LAIRD Approved as to style and content by: (Chairm of Committee) (Head of Department...

  8. Evaluation of oil shale bitumen as a pavement asphalt additive to reduce moisture damage susceptibility

    SciTech Connect (OSTI)

    Robertson, R.E.; Harnsberger, P.M.; Wolf, J.M.

    1991-01-01T23:59:59.000Z

    An unrefined shale bitumen was evaluated as an agent to reduce moisture damage susceptibility of asphalt aggregate mixtures. Some activity was observed but less than might have been expected based on the molecular weight and nitrogen content of the bitumen. The counter effects of free carboxylic acids, which are known to be variable in asphalt and which are also present in the unrefined bitumen, appear to diminish the activity of the bitumen to inhibit moisture damage. 5 refs., 1 tab.

  9. Establishment of a laboratory mix-design method for open-graded friction courses using sulfur-extended asphalt (SEA) binders

    E-Print Network [OSTI]

    Ho, Kee-Kwong

    1981-01-01T23:59:59.000Z

    ) Nard, Arable. reristance ta ab stion snd st Ipp(m. sharp angular an4 polish slats t Nlnlwwa 755 c shed. Slntee stone o cr shed gra el 1th 905 by weight havtng at le4st olla fr4ct red fa San? as Califot'Ria speciflcatloas. Crushed gravel, slag...

  10. The importance of the glass transition temperature in relation to the low-temperature fracture resistance of asphalt and sulphlex pavement binders

    E-Print Network [OSTI]

    Smith, Douglas Lee

    1985-01-01T23:59:59.000Z

    excessive expansion of these parts would distort test results. The tubes and plungers were made of vitreous silica, often called fused quartz or quartz glass because the clear vitreous silica is made by melting large crystals of quartz (35). This material... of the desired material is compared to a reference material to determine if a thermal transition such as melting, boiling, dehydration, or crystallization takes place. Second order transitions such as the glass transition may also be determined based...

  11. Evaluation of the effects of crumb rubber and SBR on rutting resistance of asphalt concrete

    SciTech Connect (OSTI)

    Shih, Chuang-Tsair; Tia, Mang; Ruth, B.E. [Univ. of Florida, Gainesville, FL (United States)

    1996-12-31T23:59:59.000Z

    This paper presents the results of a study to evaluate the effects of addition of crumb rubber (CR) and styrene-butadiene rubber (SBR) on the rutting resistance of asphalt concrete. These two additives were blended with an AC-20 and an AC-30 grade asphalt cements at different levels of concentrations. These modified and unmodified asphalt blends were tested at intermediate and high temperatures to evaluate their rutting resistance characteristics. They were also used to make Florida type S-I structural surface mixtures. These mixtures were made into Marshall-size specimens by using Gyratory Testing Machine (GTM) equipped with air-roller to compact and density to three compaction levels which simulate three different conditions in the pavement. The FDOT`s (Florida Department of Transportation) Loaded Wheel Tester was also used to evaluate the rutting resistance of these asphalt mixtures. The test results indicate that the modified asphalt mixtures show relatively better rutting resistance and shear resistance as compared with the unmodified asphalt mixtures.

  12. Thermal Degradation Studies of A Polyurethane Propellant Binder

    SciTech Connect (OSTI)

    Assink, R.A.; Celina, M.; Gillen, K.T.; Graham, A.C.; Minier, L.M.

    1999-06-12T23:59:59.000Z

    The thermal oxidative aging of a crosslinked hydroxy-terminated polybutadiene (HTPB)/isophorone diisocyanate (IPDI) based polyurethane rubber, used as a polymeric binder in solid propellant grain, was investigated at temperatures from 25 C to 125 C. The changes in tensile elongation, polymer network properties and chain dynamics, mechanical hardening and density were determined with a range of techniques including modulus profiling, solvent swelling, NMR relaxation and O{sub 2} permeability measurements. We critically evaluated the Arrhenius methodology that is commonly used with a linear extrapolation of high temperature aging data using extensive data superposition and highly sensitive oxygen consumption experiments. The effects of other constituents in the propellant formulation on aging were also investigated. We conclude that crosslinking is the dominant process at higher temperatures and that the degradation involves only limited hardening in the bulk of the material. Significant curvature in the Arrhenius diagram of the oxidation rates was observed. This is similar to results for other rubber materials.

  13. Development of statistical wet weather model to evaluate frictional properties at the pavement-tire interface on hot mix asphalt concrete

    E-Print Network [OSTI]

    Bedi, Harpreet

    2001-01-01T23:59:59.000Z

    Skid resistance on wet pavements is influenced by friction at the tire-pavement interface as well as overall hot mix asphalt (HMA) performance. It is important to control aggregate, asphalt, and mix properties to achieve desirable frictional...

  14. Application of Metagenomics for Identification of Novel Petroleum Hydrocarbon Degrading Enzymes in Natural Asphalts from the Rancho La Brea Tar Pits

    E-Print Network [OSTI]

    Baquiran, Jean-Paul Mendoza

    2010-01-01T23:59:59.000Z

    and the origin of heavy oil. Nature, 426, 344-352. HEITKAMP,natural asphalts and heavy oil compounds. A major questionmainly of asphalts and heavy oils, which have saturated into

  15. Factors affecting binder properties between production and construction and their impact on quality assurance programs

    E-Print Network [OSTI]

    Arambula Mercado, Edith

    2002-01-01T23:59:59.000Z

    Research. . 41 REFERENCES. APPENDIX 1 APPENDIX 2 . 43 . 46 51 APPENDIX 3 Page . . . 55 VITA . . . . . 58 LIST OF FIGURES FIGURE Page 1 Binder Path from the Supplier to the Construction Site. . . . 2 Box-plot for the Response Variable. . . . 26... Plot for the Contamination*Storage Time Interaction Effect. . . . . . . 33 7 Profile Plot for the Storage Time*Storage Temperature Interaction Effect. . . . . . 33 LIST OF TABLES TABLE Page 1 Factors That May Affect Binder Properties Prior...

  16. Validation of Surface Performance-Graded Specification For Surface Treatment Binders

    E-Print Network [OSTI]

    Vijaykumar, Aishwarya

    2012-10-19T23:59:59.000Z

    of modified binders (Hanz et al. 2010; Kadrmas 2006; Lewandowski 2010). Further, it was found that as the time of curing increases, a considerable component of the change in the rheology of the residue occurs because of oxidative aging. Moreover... material. However, it should be noted that recovery or aging using the RTFOT is not applicable to surface treatment binders owing to the high temperatures involved, which are not representative of field conditions. Further, (Kadrmas 2006) compared a...

  17. Department of Energy and Mineral Engineering Spring Roller Design to Increase the Lifespan of Asphalt Compactor Wiper Blades

    E-Print Network [OSTI]

    Demirel, Melik C.

    the Lifespan of Asphalt Compactor Wiper Blades By: Thomas Krupa, Eric Resch, Phillip Yesenosky, John Marshall, Asset Kusmanov Overview Volvo CE's asphalt compactors have a polymer wiper blade that is used life. o The roller was tested five times as long as the wipers and never showed any change in diameter

  18. Effects of carboxylic acids on the rheological properties of crumb rubber modified asphalt

    SciTech Connect (OSTI)

    Tauer, J.E.; Robertson, R.E. [Western Research Institute, Laramie, WY (United States)

    1996-12-31T23:59:59.000Z

    The Federal mandate of 1991-1995 on the use of scrap tires in Federal roadway construction sparked a major interest in gaining a fundamental understanding of the behavior of rubber in asphalt. This study is a systematic elucidation of what chemistry controls the final crumb rubber modified asphalt (CRMA) product quality. We discovered that the type and total acid content in the asphalt are the most influential chemical factors that determine the changes in the important roadway properties of shear modulus (G*) and loss angle ({delta}) of CRMA. Low acid (<0.005 m/L) asphalts were modified with three types of carboxylic acid and each made into CRMA using typical field mixing conditions of 1 hour at 175{degrees}C. Rheological measurements were then made at various storage times up to 192 hours following storage at both 156 and 200{degrees}C. We found the changes in CRMA theological properties correspond to the acid type spiked into the asphalt.

  19. Poly(lactic acid) degradable plastics, coatings, and binders

    SciTech Connect (OSTI)

    Bonsignore, P.V.; Coleman, R.D.; Mudde, J.P.

    1992-01-01T23:59:59.000Z

    Biochemical processes to derive value from the management of high carbohydrate food wastes, such as potato starch, corn starch, and cheese whey permeate, have typically been limited to the production of either ethanol or methane. Argonne National Laboratory (ANL) believes that lactic acid presents an attractive option for an alternate fermentation end product, especially in light of lactic acids' being a viable candidate for conversion to environmentally safe poly(lactic acid) (PLA) degradable plastics, coatings, and binders. Technology is being developed at ANL to permit a more cost effective route to modified high molecular weight PLA. Preliminary data on the degradation behavior of these modified PLAs shows the retention to the inherent hydrolytic degradability of the PLA modified, however, by introduced compositional variables. A limited study was done on the hydrolytic stability of soluble oligomers of poly(L-lactic acid). Over a 34 day hold period, water-methanol solutions of Pl-LA oligomers in the 2-10 DP range retained some 75% of their original molecular weight.

  20. Poly(lactic acid) degradable plastics, coatings, and binders

    SciTech Connect (OSTI)

    Bonsignore, P.V.; Coleman, R.D.; Mudde, J.P.

    1992-05-01T23:59:59.000Z

    Biochemical processes to derive value from the management of high carbohydrate food wastes, such as potato starch, corn starch, and cheese whey permeate, have typically been limited to the production of either ethanol or methane. Argonne National Laboratory (ANL) believes that lactic acid presents an attractive option for an alternate fermentation end product, especially in light of lactic acids` being a viable candidate for conversion to environmentally safe poly(lactic acid) (PLA) degradable plastics, coatings, and binders. Technology is being developed at ANL to permit a more cost effective route to modified high molecular weight PLA. Preliminary data on the degradation behavior of these modified PLAs shows the retention to the inherent hydrolytic degradability of the PLA modified, however, by introduced compositional variables. A limited study was done on the hydrolytic stability of soluble oligomers of poly(L-lactic acid). Over a 34 day hold period, water-methanol solutions of Pl-LA oligomers in the 2-10 DP range retained some 75% of their original molecular weight.

  1. Viscoroute 2.0: a tool for the simulation of moving load effects on asphalt pavement

    E-Print Network [OSTI]

    Chabot, Armelle; Deloffre, Lydie; Duhamel, Denis

    2010-01-01T23:59:59.000Z

    As shown by strains measured on full scale experimental aircraft structures, traffic of slow-moving multiple loads leads to asymmetric transverse strains that can be higher than longitudinal strains at the bottom of asphalt pavement layers. To analyze this effect, a model and a software called ViscoRoute have been developed. In these tools, the structure is represented by a multilayered half-space, the thermo-viscoelastic behaviour of asphalt layers is accounted by the Huet-Sayegh rheological law and loads are assumed to move at constant speed. First, the paper presents a comparison of results obtained with ViscoRoute to results stemming from the specialized literature. For thick asphalt pavement and several configurations of moving loads, other ViscoRoute simulations confirm that it is necessary to incorporate viscoelastic effects in the modelling to well predict the pavement behaviour and to anticipate possible damages in the structure.

  2. Asphalt emulsion radon barrier systems for uranium mill tailings: an overview of the technology

    SciTech Connect (OSTI)

    Baker, E.G.; Hartley, J.N.; Freeman, H.D.; Gates, T.E.; Nelson, D.A.; Dunning, R.L.

    1984-03-01T23:59:59.000Z

    Pacific Northwest Laboratory (PNL), under contract to the US Department of Energy (DOE) Uranium Mill Tailings Remedial Action Project (UMTRAP) office, has developed an asphalt emulsion cover system to reduce the release of radon from uranium mill tailings. The system has been field tested at Grand Junction, Colorado. Results from laboratory and field tests indicate that this system is effective in reducing radon release to near-background levels (<2.5 pCi m/sup -2/s/sup -1/) and has the properties required for long-term effectiveness and stability. Engineering specifications have been developed, and analysis indicates that asphalt emulsion covers are cost-competitive with other cover systems. This report summarizes the technology for asphalt emulsion radon barrier systems. 59 references, 45 figures, 36 tables.

  3. Application of pyrolized carbon black from scrap tires in asphalt pavement design and construction

    SciTech Connect (OSTI)

    Park, T.; Coree, B.J. [Indiana Department of Transportation, West Lafayette, IN (United States). Division of Research; Lovell, C.W. [Purdue Univ., West Lafayette, IN (United States). School of Civil Engineering

    1995-12-31T23:59:59.000Z

    According to EPA reports (1991) of the over 242 million waste generated each year in the United State, 5% are exported, 6% recycled, 11% incinerated, and 78% are landfilled, stockpiled, or illegally dumped. A variety of uses for these tires are being studied. Among these is pyrolysis which produces 5 5% of oil, 25% of carbon black, 9% of steel, 5% of fiber and 6% of gas. Pyrolized carbon black contains 9 % of ash, 4% of sulfur, 12% of butadine copolymer and 75% of carbon black. The objective of this research is to investigate the viability of using PCB as an additive in hot mix asphalt. The use of PCB in asphalt pavement is expected not only to improve the performance of conventional asphalt, but also to provide a means for the mass disposal of waste fires.

  4. Recycled tire rubber and other waste materials in asphalt mixtures. Transportation research record

    SciTech Connect (OSTI)

    NONE

    1995-12-31T23:59:59.000Z

    The papers in this volume, dealing with various facets of recycled tire rubber and other waste materials in asphalt mixtures, should be of interest to state and local construction, design, materials, and research engineers as well as contractors and material producers. In the first papers, Rebala and Estakhri, Malpass and Khosla, and Baker and Connolly describe research related to crumb rubber modified mixtures that was done for the Texas, North Carolina, and New Jersey State Departments of Transportation. Ali et al. report on their research in Canada to determine the feasibility of sing reclaimed roofing materials in hot mix asphalt pavement. Emery discusses the evaluation of 11 Ontario rubber modified demonstration projects in terms of pavement performance, environmental impacts, and recyclability. In the last paper, Fwa and Aziz report on their work in Singapore related to the use of incinerator residue in asphalt mixtures.

  5. Studies of asphalt air blowing and development of a new short-term aging technique

    E-Print Network [OSTI]

    Vassiliev, Nicolai

    2001-01-01T23:59:59.000Z

    , Table m-2. Low temperature hardening properi. ies of air blown asphalt fractions and blends. Table III-3. Parent asphalt HS, oxidation rate, and HR . Table IV-1. Estimated time required to achieve same degrcc of aging as RTFOT for Exxon AC-10 films... of varying I. hickness . 70 Table IV-2 Effect of air blowing conditions for Exxon AC- I 0, 325 'F, 70 min. 70 Table IV-3. Condensed volatiles and RTFOT mass change . 80 Table IV-4. Reproducibility analysis. LIST OF FIGURES P ige Figure I-l. Thin film...

  6. Hydration and strength development of binder based on high-calcium oil shale fly ash

    SciTech Connect (OSTI)

    Freidin, C. [Ben-Gurion Univ. of the Negev, Sede-Boqer (Israel)] [Ben-Gurion Univ. of the Negev, Sede-Boqer (Israel)

    1998-06-01T23:59:59.000Z

    The properties of high-calcium oil shale fly ash and low-calcium coal fly ash, which are produced in Israeli power stations, were investigated. High-calcium oil shale fly ash was found to contain a great amount of CaO{sub free} and SO{sub 3} in the form of lime and anhydrite. Mixtures of high-calcium oil shale fly ash and low-calcium coal fly ash, termed fly ash binder, were shown to cure and have improved strength. The influence of the composition and curing conditions on the compressive strength of fly ash binders was examined. The microstructure and the composition of fly ash binder after curing and long-term exposure in moist air, water and open air conditions were studied. It was determined that ettringite is the main variable in the strength and durability of cured systems. The positive effect of calcium silicate hydrates, CSH, which are formed by interaction of high-calcium oil shale fly ash and low-calcium coal fly ash components, on the carbonation and dehydration resistance of fly ash binder in open air is pronounced. It was concluded that high-calcium oil shale fly ash with high CaO{sub free} and SO{sub 3} content can be used as a binder for building products.

  7. Strength Loss in MA-MOX Green Pellets from Radiation Damage to Binders

    SciTech Connect (OSTI)

    Paul A. Lessing; W.R. Cannon; Gerald W. Egeland; Larry D. Zuck; James K. Jewell; Douglas W. Akers; Gary S. Groenewold

    2013-06-01T23:59:59.000Z

    The fracture strength of green Minor Actinides (MA)-MOX pellets containing 75 wt.% DUO2, 20 wt. % PuO2, 3 wt. % AmO2 and 2 wt. % NpO2 was studied as a function of storage time, after mixing in the binder and before sintering, to test the effect of radiation damage on binders. Fracture strength degraded continuously over the 10 days of the study for all three binders studied: PEG binder (Carbowax 8000), microcrystalline wax (Mobilcer X) and Styrene-acrylic copolymer (Duramax B1022) but the fracture strength of Duramax B1022 degraded the least. For instance, for several hours after mixing Carbowax 8000 with MA MOX, the fracture strength of a pellet was reasonably high and pellets were easily handled without breaking but the pellets were too weak to handle after 10 days. Strength measured using diametral compression test showed strength degradation was more rapid in pellets containing 1.0 wt. % Carbowax PEG 8000 compared to those containing only 0.2 wt. %, suggesting that irradiation not only left the binder less effective but also reduced the pellet strength. In contrast the strength of pellets containing Duramax B1022 degraded very little over the 10 day period. It was suggested that the styrene portion of the Duramax B1022 copolymer provided the radiation resistance.

  8. Influence of coarse aggregate size, shape and surface texture on rutting of hot mix asphalt concrete

    E-Print Network [OSTI]

    Yeggoni, Mohan

    1993-01-01T23:59:59.000Z

    increased Hveem Stability, Marshall Stability and resistance to creep of hot mix asphalt concrete. The resilient modulus of the specimens was also enhanced by the increase in the amount of crushed aggregate in the mix at high temperatures (115'F). Fractal...

  9. The State of the Practice and Common Pitfalls for Porous Asphalt for

    E-Print Network [OSTI]

    of stormwater treatment systems · To provide resources to stormwater communities currently involved in design)-131 Porous Asphalt Pavements (2008) NAPA IS-115 Open-Graded Friction Courses (2002) 3 #12;Overview 1. State of the Practice 2. Water Quality Performance 3. Hydraulic Performance 4. Cold Climate

  10. FIELD PERFORMANCE AND LABORATORY EVALUATION OF WARM MIX ASPHALT PRODUCED WITH RUBBERIZED BITUMEN

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    FIELD PERFORMANCE AND LABORATORY EVALUATION OF WARM MIX ASPHALT PRODUCED WITH RUBBERIZED BITUMEN of rubberized bitumen has been spread out mainly due to environmental aspects, but high mixing and compaction temperatures are necessary due to the higher viscosity of this bitumen. A WMA mixture (using a surfactant

  11. Creep Compliance Analysis Technique for the Flattened Indirect Tension Test of Asphalt Concrete

    E-Print Network [OSTI]

    Paulino, Glaucio H.

    Creep Compliance Analysis Technique for the Flattened Indirect Tension Test of Asphalt Concrete: ­ Cored Sample (Cylindrical) Indirect tensile testing (IDT) (Strength/Creep) ­ AASHTO T-322 Damage under and Flattened IDT · 1000-sec creep tests on three replicates · 0, -10, and -20 deg. C · Displacement

  12. Mirzahosseini et. al. ANN-Based Prediction Model for Rutting Propensity of Asphalt Mixtures1

    E-Print Network [OSTI]

    Fernandez, Thomas

    in a repeated load permanent deformation test.21 Dynamic creep test is one of the best tools for assessing of load cycles is the most23 important output of the dynamic creep test. This curve includes primary based on volumetric proportioning of the asphalt mixture. This method does16 not include any direct test

  13. Selective catalytic reduction system and process using a pre-sulfated zirconia binder

    DOE Patents [OSTI]

    Sobolevskiy, Anatoly; Rossin, Joseph A.

    2010-06-29T23:59:59.000Z

    A selective catalytic reduction (SCR) process with a palladium catalyst for reducing NOx in a gas, using hydrogen as a reducing agent is provided. The process comprises contacting the gas stream with a catalyst system, the catalyst system comprising (ZrO2)SO4, palladium, and a pre-sulfated zirconia binder. The inclusion of a pre-sulfated zirconia binder substantially increases the durability of a Pd-based SCR catalyst system. A system for implementing the disclosed process is further provided.

  14. Surface performance grading and grade selection process for surface treatment binders

    E-Print Network [OSTI]

    Barcena Mendoza, Roberto

    2001-01-01T23:59:59.000Z

    -22 Fort Worth 67-18 Amarillo 65-26 San Angelo 67-18 Abilene 67-20 Atlanta 67-17 Ausun 66-16 Bcanunon'I C)4-13 Dallas 67-18 Yoakum 65-12 /ttote: ? /nfnrnt&ttlon not provided Binder Tvpe- Suppller AC15P F AC15 STR F ACS F AC15P F AC15 5TR F...: Civil Engineering ABSTRACT Surface Performance Grading and Grade Selection Process for Surface Treatment Binders. (December 2001) Roberto Barcena Mendoza, B. S. , Instituto Tecnologico y de Estudios Superiores de Monterrey Chair of Advisory...

  15. PathBinderH: Taxonomy-Sensitive Literature Access Bioinformatics, 21(10) (May 2005), pp. 2560-2562.

    E-Print Network [OSTI]

    Berleant, Daniel

    PathBinderH: Taxonomy-Sensitive Literature Access Bioinformatics, 21(10) (May 2005), pp. 2560-2562. Using the Biological Taxonomy to Access Biological Literature with PathBinderH J. Ding1,2 , KBinderH: Taxonomy-Sensitive Literature Access 2 Using the Biological Taxonomy to Access Biological Literature

  16. Carbon Nanotubes as Binder in Electrochemical Supercapacitor Malinda Caudle, Iowa State University Georgia Tech SURF 2011 Fellow

    E-Print Network [OSTI]

    Li, Mo

    Carbon Nanotubes as Binder in Electrochemical Supercapacitor Malinda Caudle, Iowa State University devices that are both long lasting and fast charging1 . It is possible that carbon nanotubes can act as an effective binder for an activated carbon electrode2 . The effect on the electrochemical properties by adding

  17. Asphalt and Asphaltic Concrete

    E-Print Network [OSTI]

    Young, A. R.

    1914-05-01T23:59:59.000Z

    , and combined curb and gutter furnished and set, the rate for resetting old curbing; the rate per cubic yard for extra concrete, if any is used; the price per cubic yard for broken stone or gravel; the rate per square yard for paving and for relaying old...- tified and given access to the same at least ten days be- fore it is required for use, and any work in which re- jected cement was used will be rejected altogether. 5. The cement shall be packed in strong bags having printed on the outside the brand...

  18. A comparison of the fracture properties of conventional and polymer-modified two-layer asphalt concrete overlay systems 

    E-Print Network [OSTI]

    Reddy, Praveena Gutha

    1996-01-01T23:59:59.000Z

    The problem of reflection cracking through the conventional asphalt concrete overlays has increased the need to find new materials which could resist cracking or fracture more effectively. It is for this reason that polymers ...

  19. Comparison of fatigue analysis approaches for predicting fatigue lives of hot-mix asphalt concrete (HMAC) mixtures

    E-Print Network [OSTI]

    Walubita, Lubinda F.

    2006-08-16T23:59:59.000Z

    Hot-mix asphalt concrete (HMAC) mixture fatigue characterization constitutes a fundamental component of HMAC pavement structural design and analysis to ensure adequate field fatigue performance. HMAC is a heterogeneous complex composite material...

  20. Fatigue resistance of hot-mix asphalt concrete (HMAC) mixtures using the calibrated mechanistic with surface energy (CMSE) measurements approach

    E-Print Network [OSTI]

    Ofori-Abebresse, Edward Kwame

    2006-10-30T23:59:59.000Z

    Fatigue cracking is one of the fundamental distresses that occur in the life of a Hot Mix Asphalt Concrete (HMAC) pavement. This load induced distress leads to structural collapse of the entire pavement ultimately and can only be remedied...

  1. Fatigue resistance of hot-mix asphalt concrete (HMAC) mixtures using the calibrated mechanistic with surface energy (CMSE) measurements approach 

    E-Print Network [OSTI]

    Ofori-Abebresse, Edward Kwame

    2006-10-30T23:59:59.000Z

    Fatigue cracking is one of the fundamental distresses that occur in the life of a Hot Mix Asphalt Concrete (HMAC) pavement. This load induced distress leads to structural collapse of the entire pavement ultimately and can ...

  2. A unified method for the analysis of nonlinear viscoelasticity and fatigue cracking of asphalt mixtures using the dynamic mechanical analyzer

    E-Print Network [OSTI]

    Castelo Branco, Veronica Teixeira Franco

    2009-05-15T23:59:59.000Z

    A UNIFIED METHOD FOR THE ANALYSIS OF NONLINEAR VISCOELASTICITY AND FATIGUE CRACKING OF ASPHALT MIXTURES USING THE DYNAMIC MECHANICAL ANALYZER A Dissertation by VERONICA TEIXEIRA FRANCO CASTELO BRANCO Submitted to the Office... VISCOELASTICITY AND FATIGUE CRACKING OF ASPHALT MIXTURES USING THE DYNAMIC MECHANICAL ANALYZER A Dissertation by VERONICA TEIXEIRA FRANCO CASTELO BRANCO Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  3. A study of substitution solvents in asphalt fume extraction and the effects of heating duration and temperature 

    E-Print Network [OSTI]

    Curry, Noel Thomas

    1981-01-01T23:59:59.000Z

    may be used as substitute solvents for the solvent extraction analytical method for asphalt furres proposed by NlnSH and currently in use by OSHA. Benzene is known to orovide IC0% effic- 1 iency in asphalt fume extraction. The results..., rather than the solvents' effic- iency loss, was responsible for the differences. The importance of the data lies in the fact that the other two test solvents exhibited a consiatency equal to that of benzene. 'Ahile the exact coefficient of any...

  4. Neutral hydrophilic cathode catalyst binders for microbial fuel cells Tomonori Saito,ab

    E-Print Network [OSTI]

    ) to liberate electrons from organic compounds. MFCs represent a promising renewable energy the years by several orders-of-magnitude is an encouraging trend.3 However, further increases in power performance. Increasing the hydrophilicity of the PS-b-PEO binders enhanced the electrochemical response

  5. Epitope-Guided Engineering of Monobody Binders for in Vivo Inhibition of Erk2 Signaling

    E-Print Network [OSTI]

    Ferkey, Denise

    Epitope-Guided Engineering of Monobody Binders for in Vivo Inhibition of Erk2 Signaling Jasdeep K a defined surface patch on the mitogen activated protein kinase (MAPK) Erk-2. The targeted area ("CD" domain be useful for regulating Erk- 2 signaling in vivo. Although the CD domain constitutes only a small

  6. Concrete chemistry: Chemical admixtures, sprayed concrete, concrete binders and current R&D

    E-Print Network [OSTI]

    Davies, Christopher

    Concrete chemistry: Chemical admixtures, sprayed concrete, concrete binders and current R&D Dr Roar Myrdal, R&D Director Construction Chemicals, Normet International Ltd. Adjunct Prof. Concrete Technology ­ School of Engineering ABSTRACT A short overview of chemical admixtures for concrete ­ types and how

  7. Effects of binder concentration on the properties of plastic-bonded explosives

    SciTech Connect (OSTI)

    Steele, R.D.; Stretz, L.A.; Taylor, G.W.; Rivera, T.

    1989-01-01T23:59:59.000Z

    A series of plastic-bonded explosives (PBX) has been formulated with more binder than is normally contained in high-energy formulations. Adding a relatively small amount of binder to a material such as PBX 9501 (95/2.5/1.25/1.25 wt % HMX/Estane/BDNPA/BDNPF (the BDNPA and BDNPF form a eutectic that is frequently called simply the eutectic)) was found to decrease the shock sensitivity while not decreasing the energy of the explosive. The best compromise for a PBX 9501-type material contains about 92 wt % HMX. Adding additional binder does not continue to decrease the gap sensitivity of the formulation; however, the energy of the PBX decreases as expected. The higher-binder formulations are of potential use because of the possibility of formulating a PBX with energy similar to TATB formulations, such as PBX 9502 (95/5 wt % TATB/Kel-F 800), and with a higher strain to failure. 2 refs., 4 figs., 1 tab.

  8. The Phase One I-710 Freeway Rehabilitation Project: Initial Design (1999) to Performance after Five-Plus Years of Traffic (2009)

    E-Print Network [OSTI]

    Monismith, Carl L.; Harvey, John T; Tsai, Bor-Wen; Long, Fenella; Signore, J.

    2009-01-01T23:59:59.000Z

    Open-graded Porous Friction Asphalt Concrete (PBA-6a*)additional asphalt concrete and the porous friction course.concrete with asphalt rubber binder (RAC-O). The thickness including the open-graded porous

  9. Thickness estimation of subsurface layers in asphalt pavement using monstatic ground penetrating radar

    E-Print Network [OSTI]

    Lau, Chun Lok

    1991-01-01T23:59:59.000Z

    for the degree of MASTER OF SCIENCE December 1991 Major Subject: Electrical Engineering THICKNESS ESTIMATION OF SUBSURFACE LAYERS IN ASPHALT PAVEMENT USING MONSTATIC GROUND PENETRATING RADAR A Thesis CHUN LOK LAU Approved as to style and content by... ACKNOWLEDGEMENTS. LIST OF FIGURES. . CHAPTER I INTRODUCTION. 1. 1 Importance of pavement profile data. 1. 2 Principle of Ground Penetrating Radar (GPR) . . . 1. 3 Subsurface layer thickness measurement method. . . . . . II GPR ANTENNA AND SYSTEM CALIBRATION...

  10. Viscosity, relaxation time, and dynamics within a model asphalt of larger molecules

    SciTech Connect (OSTI)

    Li, Derek D.; Greenfield, Michael L., E-mail: greenfield@egr.uri.edu [Department of Chemical Engineering, University of Rhode Island, Kingston, Rhode Island 02881 (United States)

    2014-01-21T23:59:59.000Z

    The dynamics properties of a new “next generation” model asphalt system that represents SHRP AAA-1 asphalt using larger molecules than past models is studied using molecular simulation. The system contains 72 molecules distributed over 12 molecule types that range from nonpolar branched alkanes to polar resins and asphaltenes. Molecular weights range from 290 to 890 g/mol. All-atom molecular dynamics simulations conducted at six temperatures from 298.15 to 533.15 K provide a wealth of correlation data. The modified Kohlrausch-Williams-Watts equation was regressed to reorientation time correlation functions and extrapolated to calculate average rotational relaxation times for individual molecules. The rotational relaxation rate of molecules decreased significantly with increasing size and decreasing temperature. Translational self-diffusion coefficients followed an Arrhenius dependence. Similar activation energies of ?42 kJ/mol were found for all 12 molecules in the model system, while diffusion prefactors spanned an order of magnitude. Viscosities calculated directly at 533.15 K and estimated at lower temperatures using the Debye-Stokes-Einstein relationship were consistent with experimental data for asphalts. The product of diffusion coefficient and rotational relaxation time showed only small changes with temperature above 358.15 K, indicating rotation and translation that couple self-consistently with viscosity. At lower temperatures, rotation slowed more than diffusion.

  11. Development of a long-term durability specification for polymer modified asphalt

    E-Print Network [OSTI]

    Woo, Won Jun

    2009-06-02T23:59:59.000Z

    through MnRoad)............................................................................................... 42 Figure II-18. ?* Hardening Rate for ER Aged Binders (Lion through Valero)........ 42 Figure II-19. GPC Chromatograms for Koch PG 64...-22............................................ 44 Figure II-20. GPC Chromatograms for Koch PG 70-22............................................ 44 Figure II-21. GPC Chromatograms for Koch PG 76-22............................................ 45 Figure II-22. GPC Chromatograms for Mn...

  12. Utilizing New Binder Materials for Green Building has Zero Waste by Recycling Slag and Sewage Sludge Ash 

    E-Print Network [OSTI]

    Zeedan, S. R.

    2010-01-01T23:59:59.000Z

    binding material to save energy and to produce new innovative zero materials waste . The current research aims to investigate new binder materials as alternative of Portland cement. Alkali activated slag (AAS) blended with sewage sludge ash (SSA...

  13. Experimental Study on Shear Fatigue Behavior and Stiffness Performance of Warm Mix Asphalt by adding Synthetic Wax

    E-Print Network [OSTI]

    Petit, Christophe; Canestrari, Francesco; Pannunzio, Valter; Virgili, Amadeo

    2012-01-01T23:59:59.000Z

    Synthetic waxes produced by standard and registered processes may be used to manufacture Warm Mix Asphalt (WMA), which is a modified asphalt concrete produced, applied and compacted at temperatures below those typically required. This feature leads to environmental benefits, such as reduced energy consumption, gas and fume emissions, as well as to economic/operational advantages, such as lower production costs and greater hauling distances for extended construction seasons with tighter schedules. The present article serves to compare the mechanical performance of a WMA produced by adding synthetic wax with a traditional Hot Mix Asphalt (HMA) specimen, in terms of shear fatigue response and both complex and stiffness moduli. The experimental results and related modeling work demonstrate that adding synthetic wax into the WMA composition does not hinder either the destructive or non-destructive performance of an HMA, and this finding is corroborated by respectively measuring fatigue life and stiffness.

  14. Experimental Study on Shear Fatigue Behavior and Stiffness Performance of Warm Mix Asphalt by adding Synthetic Wax

    E-Print Network [OSTI]

    Christophe Petit; Anne Millien; Francesco Canestrari; Valter Pannunzio; Amadeo Virgili

    2012-03-13T23:59:59.000Z

    Synthetic waxes produced by standard and registered processes may be used to manufacture Warm Mix Asphalt (WMA), which is a modified asphalt concrete produced, applied and compacted at temperatures below those typically required. This feature leads to environmental benefits, such as reduced energy consumption, gas and fume emissions, as well as to economic/operational advantages, such as lower production costs and greater hauling distances for extended construction seasons with tighter schedules. The present article serves to compare the mechanical performance of a WMA produced by adding synthetic wax with a traditional Hot Mix Asphalt (HMA) specimen, in terms of shear fatigue response and both complex and stiffness moduli. The experimental results and related modeling work demonstrate that adding synthetic wax into the WMA composition does not hinder either the destructive or non-destructive performance of an HMA, and this finding is corroborated by respectively measuring fatigue life and stiffness.

  15. Establishing material properties for thin asphalt concrete surfaces on granular bases

    E-Print Network [OSTI]

    Rosson, Barry Thomas

    1985-01-01T23:59:59.000Z

    cross-section of a Goodyear Hi -Miler 10. 00-20 14-ply bias truck tire carcass was obtained; the input data for the Tielking tire model was developed by measuring cord locations, angles, and plies on a section of the tire; and the tire pressure.... Since little work in the past has been done in the area of thin asphalt concrete surface analysis, re-evaluation of several assumptions concerning the tire load were necessary. The truck tire pressures on Texas highways have dramatically increased...

  16. The Effects of Using Alkali-Silica Reaction Affected Recycled Concrete Aggregate in Hot Mix Asphalt

    E-Print Network [OSTI]

    Geiger, Brian James

    2011-10-21T23:59:59.000Z

    mix asphalt (HMA) were investigated in this study. Dilatometer and modified beam tests were performed to determine the possibility of new ASR occurring in reactive aggregates within the HMA or re-expansion of existing gel. The Lottman test... (XRD) was used to check for the potential presence of gel in the filler fraction of the ASR-RCAs. Micro-deval and freeze-thaw tests were evaluated for their potential to indicate the presence of excess micro-cracks or ASR gel. Expansion testing...

  17. Whole House Thermal Performance of Asphalt Shingles Exploiting Special Infrared Reflective Pigments

    E-Print Network [OSTI]

    Hahn, L.; Miller, W.; Desjarlais, A.; Jacobs, J.; Youngquist, A.

    2006-01-01T23:59:59.000Z

    -04 using cycle 4 as described in Table X2.1, Common Exposure Conditions, of the G 154 standard (ASTM 2002b). A UVB-340 lamp was used for simulating direct solar UV radiation; this lamp has no UV output below 300 nm, which is the cutoff wavelength... for this behavior is unknown; overall, however, the data clearly show that the IRR shingles perform just as well when subjected to direct solar UV radiation as standard products accepted on the open market. The IRR asphalt shingles do not lose solar reflectance...

  18. Impact of aging on asphalt pavement performance, ductility and DSR measurements

    E-Print Network [OSTI]

    Al-Azri, Nasser Ahmed

    2002-01-01T23:59:59.000Z

    . . . . . . . . . . . . 39 111-6 The Eslimated Ductility Values of Texas, SH 21 Cores. . . . . . 41 111-7 Field and Lab-aged Exxon AC-20 Hardening Rate. . . . . . . . 43 LIST OF FIGURES FIGURE Page G' versus tI'/G' at (15 'C and 0. 005 rad/s) (Ruan, 2002). . . , 12... Susceptibility of Exxon AC-20 Obtained for Lab- and Field-Aged Binder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 The G' Versus tI*/G' of Lab- and Field-Aged Fxxon AC-20...

  19. Instability of Polyvinylidene Fluoride-Based Polymeric Binder in Lithium-Ion Cells: Final Report

    SciTech Connect (OSTI)

    Garcia, M.; Nagasubramanian, G.; Tallant, D.R.; Roth, E.P.

    1999-05-01T23:59:59.000Z

    Thermal instabilities were identified in SONY-type lithium-ion cells and correlated with interactions of cell constituents and reaction products. Three temperature regions of interaction were identified and associated with the state of charge (degree of Li intercalation) of the cell. Anodes were shown to undergo exothermic reactions as low as 100 degree C involving the solid electrolyte interface (SEI) layer and the LiPF(6) salt in the electrolyte (EC-PC:DEC/IM LiPF(6)). These reactions could account for the thermal runaway observed in these cells beginning at 100 degree C. Exothermic reactions were also observed in the 200 degree C to 300 degree C region between the intercalated lithium anodes, the LiPF(6) salt, and the PVDF. These reactions were followed by a high-temperature reaction region, 300 degree C to 400 degree C, also involving the PVDF binder and the intercalated lithium anodes. The solvent was not directly involved in these reactions but served as a moderator and transport medium. Cathode exothermic reactions with the PVDF binder were observed above 200 degree C and increased with the state of charge (decreasing Li content). The stability of the PVDF binder as a function of electrochemical cycling was studied using FTIR. The infrared spectra from the extracts of both electrodes indicate that PVDF is chemically modified by exposure to the lithium cell electrolyte (as well as electrochemical cycling) in conjunction with NMP extraction. Preconditioning of PVDF to dehydrohalogenation, which may be occurring by reaction with LiPf(6), makes the PVDF susceptible to attack by a range of nucleophiles.

  20. Porous Asphalt Pavement for Stormwater Management The UNH Stormwater Center Web: www.unh.edu/erg/cstev/

    E-Print Network [OSTI]

    Porous Asphalt Pavement for Stormwater Management The UNH Stormwater Center Web: www. Extended Pavement Life Due to Well Drained Base and Reduced Freeze-Thaw Disadvantages · Requires Routine. Standard Pavement Applications where Stormwater Infrastructure is Required · Materials Cost is ~20-25% More

  1. SOURCE: UNIVERSITY OF CALIFORNIA PAVEMENT RESEARCH CENTER FIGURE 1 Moisture-induced stripping in asphalt treated base layer

    E-Print Network [OSTI]

    California at Berkeley, University of

    SOURCE: UNIVERSITY OF CALIFORNIA PAVEMENT RESEARCH CENTER FIGURE 1 Moisture-induced stripping in asphalt treated base layer PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program publication is provided by the University of California Pavement Research Center. The University of California Pavement

  2. Recycling spent sandblasting grit and similar wastes as aggregate in asphaltic concrete. Technical data sheet

    SciTech Connect (OSTI)

    Heath, J.C.; Nelson, B.

    1998-12-01T23:59:59.000Z

    The Naval Facilities Engineering Service Center (NFESC), Port Hueneme, California, and Naval Facilities Engineering Command Engineering Field Activity, West, San Bruno, California, took overall leadership in identifying and testing methods to manage waste generated from a machine shop located at Hunters Point Annex, at Naval Station, Treasure Island, California. Ship cleaning and equipment maintenance resulted in the accumulation of 4,665 tons of spent sandblasting grit at the site. The spent grit, consisting of silica sand plus a small amount of slag-derived grit, had the physical characteristics of coarse-grained beach sand and also contained fragments of coatings. The spent grit had the potential for exhibiting hazardous characteristics since the coatings included lead-based primers, copper, and butyltin-containing antifouling topcoats. The most beneficial application of reusing the spent grit was to use it as a replacement for some of the fine aggregate in asphaltic concrete. A test program was established that included characterization, bench-scale testing, long-term pilot scale testing, and a full-scale demonstration. Full-scale asphalt production provided samples which proved both the chemical leaching resistance and physical performance characteristics were acceptable.

  3. Excess Foundry Sand Characterization and Experimental Investigation in Controlled Low-Strength Material and Hot-Mixing Asphalt

    SciTech Connect (OSTI)

    Paul J. Tikalsky, Hussain U. Bahia, An Deng and Thomas Snyder

    2004-10-15T23:59:59.000Z

    This report provides technical data regarding the reuse of excess foundry sand. The report addresses three topics: a statistically sound evaluation of the characterization of foundry sand, a laboratory investigation to qualify excess foundry sand as a major component in controlled low-strength material (CLSM), and the identification of the best methods for using foundry sand as a replacement for natural aggregates for construction purposes, specifically in asphalt paving materials. The survival analysis statistical technique was used to characterize foundry sand over a full spectrum of general chemical parameters, metallic elements, and organic compounds regarding bulk analysis and leachate characterization. Not limited to characterization and environmental impact, foundry sand was evaluated by factor analyses, which contributes to proper selection of factor and maximization of the reuse marketplace for foundry sand. Regarding the integration of foundry sand into CLSM, excavatable CLSM and structural CLSM containing different types of excess foundry sands were investigated through laboratory experiments. Foundry sand was approved to constitute a major component in CLSM. Regarding the integration of foundry sand into asphalt paving materials, the optimum asphalt content was determined for each mixture, as well as the bulk density, maximum density, asphalt absorption, and air voids at Nini, Ndes, and Nmax. It was found that foundry sands can be used as an aggregate in hot-mix asphalt production, but each sand should be evaluated individually. Foundry sands tend to lower the strength of mixtures and also may make them more susceptible to moisture damage. Finally, traditional anti-stripping additives may decrease the moisture sensitivity of a mixture containing foundry sand, but not to the level allowed by most highway agencies.

  4. Excess Foundry Sand Characterization and Experimental Investigation in Controlled Low-Strength Material and Hot-Mixing Asphalt

    SciTech Connect (OSTI)

    Pauul J. Tikalsky

    2004-10-31T23:59:59.000Z

    This report provides technical data regarding the reuse of excess foundry sand. The report addresses three topics: (1) a statistically sound evaluation of the characterization of foundry sand, (2) a laboratory investigation to qualify excess foundry sand as a major component in controlled low-strength material (CLSM), and (3) the identification of the best methods for using foundry sand as a replacement for natural aggregates for construction purposes, specifically in asphalt paving materials. The survival analysis statistical technique was used to characterize foundry sand over a full spectrum of general chemical parameters, metallic elements, and organic compounds regarding bulk analysis and leachate characterization. Not limited to characterization and environmental impact, foundry sand was evaluated by factor analyses, which contributes to proper selection of factor and maximization of the reuse marketplace for foundry sand. Regarding the integration of foundry sand into CLSM, excavatable CLSM and structural CLSM containing different types of excess foundry sands were investigated through laboratory experiments. Foundry sand was approved to constitute a major component in CLSM. Regarding the integration of foundry sand into asphalt paving materials, the optimum asphalt content was determined for each mixture, as well as the bulk density, maximum density, asphalt absorption, and air voids at N{sub ini}, N{sub des}, and N{sub max}. It was found that foundry sands can be used as an aggregate in hot-mix asphalt production, but each sand should be evaluated individually. Foundry sands tend to lower the strength of mixtures and also may make them more susceptible to moisture damage. Finally, traditional anti-stripping additives may decrease the moisture sensitivity of a mixture containing foundry sand, but not to the level allowed by most highway agencies.

  5. An electrochemical double layer capacitor using an activated carbon electrode with gel electrolyte binder

    SciTech Connect (OSTI)

    Osaka, Tetsuya, Liu, X.; Nojima, Masashi; Momma, Toshiyuki [Waseda Univ., Tokyo (Japan)] [Waseda Univ., Tokyo (Japan)

    1999-05-01T23:59:59.000Z

    An electric double layer capacitor (EDLC) was prepared with an activated carbon powder electrode with poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) based gel electrolyte. Ethylene carbonate (EC) and propylene carbonate (PC) were used as plasticizer and tetraethylammonium tetrafluoroborate (TEABF{sub 4}) was used as the supporting electrolyte. An optimized gel electrolyte of PVdF-HFP/PC/EC/TEABF{sub 4} - 23/31/35/11 mass ratio exhibited high ionic conductivity of 5 {times} 10{sup {minus}3} S/cm, high electrode capacitance, and good mechanical strength. An electrode consisting of activated carbon (AC) with the gel electrolyte as the binder (AC/PVdF-HFP based gel, 7/3 mass ratio) showed a higher specific capacitance and a lower ion diffusion resistance within the electrode than a carbon electrode, prepared with PVdF-HFP binder without plasticizer. This suggests that an electrode mixed with the gel electrolyte has a lower ion diffusion resistance inside the electrode. The highest specific capacitance of 123 F/g was achieved with an electrode containing AC with a specific surface area of 2500 m{sup 2}/g. A coin-type EDLC cell with optimized components showed excellent cycleability exceeding 10{sup 4} cycles with ca. 100% coulombic efficiency achieved when charging and discharging was repeated between 1.0 and 2.5 V at 1.66 mA/cm{sup 2}.

  6. Clean, agile alternative binders, additives and plasticizers for propellant and explosive formulations

    SciTech Connect (OSTI)

    Hoffman, D.M. [Lawrence Livermore National Lab., CA (United States); Hawkins, T.W. [Phillips Lab., Edwards AFB, CA (United States); Lindsay, G.A. [Naval Weapons Station, China Lake, CA (United States)] [and others

    1994-12-01T23:59:59.000Z

    As part of the Strategic Environmental Research and Development Program (SERDP) a clean, agile manufacturing of explosives, propellants and pyrotechniques (CANPEP) effort set about to identify new approaches to materials and processes for producing propellants, explosives and pyrotechniques (PEP). The RDX based explosive PBXN-109 and gun propellant M-43 were identified as candidates for which waste minimization and recycling modifications might be implemented in a short time frame. The binders, additives and plasticizers subgroup identified cast non-curable thermoplastic elastomer (TPE) formulations as possible replacement candidates for these formulations. Paste extrudable explosives were also suggested as viable alternatives to PBXN-109. Commercial inert and energetic TPEs are reviewed. Biodegradable and hydrolyzable binders are discussed. The applicability of various types of explosive formulations are reviewed and some issues associated with implementation of recyclable formulations are identified. It is clear that some processing and weaponization modifications will need to be made if any of these approaches are to be implemented. The major advantages of formulations suggested here over PBXN-109 and M-43 is their reuse/recyclability. Formulations using TPE or Paste could by recovered from a generic bomb or propellant and reused if they met specification or easily reprocessed and sold to the mining industry.

  7. Two- and Three-Dimensional Microstructural Modeling of Asphalt Particulate Composite Materials using a Unified Viscoelastic-Viscoplastic-Viscodamage Constitutive Model

    E-Print Network [OSTI]

    You, Taesun

    2013-08-13T23:59:59.000Z

    The main objective of this study is to develop and validate a framework for microstructural modeling of asphalt composite materials using a coupled thermo-viscoelastic, thermo-viscoplastic, and thermo-viscodamage constitutive model. In addition...

  8. Use of shredded tires in the subbase layer of asphalt pavements

    SciTech Connect (OSTI)

    Papp, W.J. Jr.; Maher, M.H. [Rutgers Univ., Piscataway, NJ (United States). Dept. of Civil and Environmental Engineering; Baker, R.F. [New Jersey Dept. of Transportation, Trenton, NJ (United States)

    1997-12-31T23:59:59.000Z

    Research was conducted on the use of shredded scrap tires for use in the subbase layer of asphalt pavements. Mixtures of shredded scrap tires with virgin soil provide a means of recycling unwanted tires and conserving a finite supply of virgin soil. The mechanistic procedure for the design of pavement systems requires resilient modulus values. Plastic and elastic strains were measured using external LVDT`s and internal proximity sensors. Resilient modulus measurements were conducted on cohesionless soils mixed with various amounts of shredded tire chips. The performance f the shredded tire mixture is compared to that of the naturally occurring virgin soil used in subbase applications in New Jersey. A number of experimental issues are discussed such as: method of compaction, optimum ratio of shredded tire chips to soil, optimum size and gradation of shredded tire chips, and strength testing using California Bearing Ratio.

  9. J. Phys. III Hance 7 (1997) 291-302 FEBRUARY 1997, PAGE 291 Mechanislns of Binder Relnoval Involved in Supercritical

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1997-01-01T23:59:59.000Z

    . Extraction of organic additives from extrusion-moulded ceramic parts by super- critical carbon dioxide has. Thermal debinding, which is currently used, remains one of the most critical phases of ceramic processing and Pc are the critical temperature and pressure of the fluid. Extraction of binders by supercritical

  10. Upgrading mild gasification liquids to produce electrode binder pitch. Technical report, 1 March--31 May 1994

    SciTech Connect (OSTI)

    Knight, R.A. [Inst. of Gas Technology, Chicago, IL (United States)

    1994-09-01T23:59:59.000Z

    The objective of this program is to investigate the production of electrode binder pitch, valued at $250--$300/ton, from mild gasification liquids. The IGT MILDGAS process pyrolyzes coal at 650--760 C and, with Illinois coal, the 400 C+ distillation residue (crude pitch) comprises 40--70% of the MILDGAS liquids, representing up to 20 wt% of maf feed coal. The largest market for pitch made from coal liquids is the aluminum industry, which uses it to make carbon anodes for electrolytic furnaces. In this project, crude MILDGAS pitch is being modified by a flash thermocracking technique to achieve specifications typical of a binder pitch. Last year, a pitch thermocracking unit was constructed for operation at 650--900 F. Process conditions are being examined to optimize the properties of the finished pitch and coke. In the current year, improvements to the thermocracker were made for better gas and pitch flow control, continuous electronic monitoring of feed rate and pressures, and improvements to allow longer tests. During the current quarter, five thermocracking tests were conducted in 100% N{sub 2}, 50% H{sub 2}/N{sub 2}, and 100% H{sub 2}. Test temperatures were 758--873 C with residence times of 1.86--2.42 s and pitch:gas ratios of 0.90--1.10 {times} 10{sup {minus}4}. Product analyses showed that there was no significant effect of H{sub 2} on the pitch sulfur content, but the pitch sulfur content was significantly reduced at higher temperature.

  11. Recycled brake linings as partial aggregate substitute in asphalt paving. Construction and final report. Report for July 1992-August 1996

    SciTech Connect (OSTI)

    Miller, P.A.; Sukley, R.

    1996-09-01T23:59:59.000Z

    The purpose of this project was to evaluate the performance of asphalt containing various percentages of brake lining as an aggregate, and compare its performance to that of normal asphalt containing natural aggregate. This project is an effort to explore alternate ways to use waste product. Four test section of FB-2 Modified mix containing brake lining materials were placed in July 1992 along with one control section on SR 3022 in Mercer county. To date all sections are performing satisfactory, and Brake linings should be recommended as a viable partial replacement of aggregate in bituminous materials. This study only considered the performance of only off-spec brake linings, therefore, any performance data or enviromental effects of placement of used brake material should be addressed.

  12. Electrochemical assessment and service-life prediction of mechanically stabilized earth walls backfilled with crushed concrete and recycled asphalt pavement

    E-Print Network [OSTI]

    Esfeller, Michael Watts, Jr.

    2009-06-02T23:59:59.000Z

    Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 2006 Major Subject: Civil Engineering ELECTROCHEMICAL ASSESSMENT AND SERVICE-LIFE PREDICTION... OF MECHANICALLY STABILIZED EARTH WALLS BACKFILLED WITH CRUSHED CONCRETE AND RECYCLED ASPHALT PAVEMENT A Thesis by MICHAEL WATTS ESFELLER, JR. Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  13. A study of substitution solvents in asphalt fume extraction and the effects of heating duration and temperature

    E-Print Network [OSTI]

    Curry, Noel Thomas

    1981-01-01T23:59:59.000Z

    (denoted Dl). Duration two ( D2) ran from time 60 minutes to time 90 minutes, Dl and DZ were separated by a 30 minute period in wh i ch no sampling occurred. The total time of heati ng at this temperature range was 90 minutes, which was near the limit... of the filter to hold it in position, and the cassette cap was placed on top of this. 3oth ends were then plugged. (Figure 2) After a warming period of approximately 30 minutes, the temperature of the liquid asphalt was raised to 250 C. iihen it reached...

  14. Lessons Learned

    E-Print Network [OSTI]

    DiMento, Joseph F.C.

    2000-01-01T23:59:59.000Z

    Lessons Learned Joseph F.C. DiMento The contributions insuccessful in bringing LESSONS LEARNED parties to discuss arelations." Yet LESSONS LEARNED "innovations" in the

  15. A novel technique for the production of cool colored concrete tile and asphalt shingle roofing products

    SciTech Connect (OSTI)

    Levinson, Ronnen; Akbari, Hashem; Berdahl, Paul; Wood, Kurt; Skilton, Wayne; Petersheim, Jerry

    2009-11-20T23:59:59.000Z

    The widespread use of solar-reflective roofing materials can save energy, mitigate urban heat islands and slow global warming by cooling the roughly 20% of the urban surface that is roofed. In this study we created prototype solar-reflective nonwhite concrete tile and asphalt shingle roofing materials using a two-layer spray coating process intended to maximize both solar reflectance and factory-line throughput. Each layer is a thin, quick-drying, pigmented latex paint based on either acrylic or a poly(vinylidene fluoride)/acrylic blend. The first layer is a titanium dioxide rutile white basecoat that increases the solar reflectance of a gray-cement concrete tile from 0.18 to 0.79, and that of a shingle surfaced with bare granules from 0.06 to 0.62. The second layer is a 'cool' color topcoat with weak near-infrared (NIR) absorption and/or strong NIR backscattering. Each layer dries within seconds, potentially allowing a factory line to pass first under the white spray, then under the color spray. We combined a white basecoat with monocolor topcoats in various shades of red, brown, green and blue to prepare 24 cool color prototype tiles and 24 cool color prototypes shingles. The solar reflectances of the tiles ranged from 0.26 (dark brown; CIELAB lightness value L* = 29) to 0.57 (light green; L* = 76); those of the shingles ranged from 0.18 (dark brown; L* = 26) to 0.34 (light green; L* = 68). Over half of the tiles had a solar reflectance of at least 0.40, and over half of the shingles had a solar reflectance of at least 0.25.

  16. Caltrans Partnered Pavement Research Program (PPRC) Summary Report: Four Year Period: 2000–2004

    E-Print Network [OSTI]

    Harvey, John T; Monismith, Carl L.; Nokes, William; Coetzee, N. F

    2006-01-01T23:59:59.000Z

    from Six Initial Accelerated Pavement Tests Conducted on theBinder–Asphalt Concrete Pavement Section. Draft Report.Report prepared for the Pavement Research Center by

  17. Asphaltenes and Asphalts, 2. Developments in Petroleum Science, 40 B edited by T.F. Yen and G.V. Chilingarian

    E-Print Network [OSTI]

    Ă?agin, Tahir

    Asphaltenes and Asphalts, 2. Developments in Petroleum Science, 40 B edited by T.F. Yen and G OF ASPHALTENES: A PREDICTIVE APPROACH BASED ON COMPUTER ASSISTED STRUCTURE ELUCIDATION AND ATOMISTIC SIMULATIONS, asphaltenes and resins [1­4]. Asphaltenes are operationally defined as the non-volatile and polar fraction

  18. Continual Learning

    Broader source: Energy.gov [DOE]

    Continual Learning is a change initiative which is used to help develop and grow a learning culture within DOE.

  19. Utilize Cementitious High Carbon Fly Ash (CHCFA) to Stabilize Cold In-Place Recycled (CIR) Asphalt Pavement as Base Coarse

    SciTech Connect (OSTI)

    Wen, Haifang; Li, Xiaojun; Edil, Tuncer; O'Donnell, Jonathan; Danda, Swapna

    2011-02-05T23:59:59.000Z

    The purpose of this study was to evaluate the performance of cementitious high carbon fly ash (CHCFA) stabilized recycled asphalt pavement as a base course material in a real world setting. Three test road cells were built at MnROAD facility in Minnesota. These cells have the same asphalt surface layers, subbases, and subgrades, but three different base courses: conventional crushed aggregates, untreated recycled pavement materials (RPM), and CHCFA stabilized RPM materials. During and after the construction of the three cells, laboratory and field tests were carried out to characterize the material properties. The test results were used in the mechanistic-empirical pavement design guide (MEPDG) to predict the pavement performance. Based on the performance prediction, the life cycle analyses of cost, energy consumption, and greenhouse gasses were performed. The leaching impacts of these three types of base materials were compared. The laboratory and field tests showed that fly ash stabilized RPM had higher modulus than crushed aggregate and RPM did. Based on the MEPDG performance prediction, the service life of the Cell 79 containing fly ash stabilized RPM, is 23.5 years, which is about twice the service life (11 years) of the Cell 77 with RPM base, and about three times the service life (7.5 years) of the Cell 78 with crushed aggregate base. The life cycle analysis indicated that the usage of the fly ash stabilized RPM as the base of the flexible pavement can significantly reduce the life cycle cost, the energy consumption, the greenhouse gases emission. Concentrations of many trace elements, particularly those with relatively low water quality standards, diminish over time as water flows through the pavement profile. For many elements, concentrations below US water drinking water quality standards are attained at the bottom of the pavement profile within 2-4 pore volumes of flow.

  20. Production of low-sulfur binder pitch from high-sulfur Illinois coals. Technical report, September 1--November 30, 1994

    SciTech Connect (OSTI)

    Knight, R.A. [Inst. of Gas Technology, Chicago, IL (United States)

    1994-12-31T23:59:59.000Z

    The objective of this project is to produce electrode binder pitch with sulfur content below 0.6 wt% from high-sulfur Illinois coal mild gasification liquids. In this project, two approaches to sulfur reduction are being explored in conjunction with thermocracking: (1) the use of conventionally cleaned coal with low ({approximately}1%) sulfur as a mild gasification feedstock, and (2) direct biodesulfurization of the liquids prior to thermocracking. In Case 1, the crude pitch is being produced by mild gasification of IBC-109 coal in an existing IGT bench-scale reactor, followed by distillation of the scrubbing solvent and light-to-middle oils to isolate the crude pitch. In Case 2, the crude pitch for biodesulfurization is the same material previously studied, which was obtained from Illinois No. 6 coal tests conducted in the IGT mild gasification PRU in 1990. Biodesulfurization is to be performed by contacting the pitch with Rhodococcus Rhodochrous either as live cultures or in the form of concentrated biocatalyst. Following preparation of the crude pitches, pitch upgrading experiments are to be conducted in a continuous flash thermocracker (FTC) constructed in previous ICCI-sponsored studies. The finished pitch is then characterized for physical and chemical properties (density, softening point, QI, TI, coking value, and elemental composition), and compared to typical specifications for binder pitches. This quarter, 45 kg of IBC-109 coal was obtained and sized to 40 x 80 mesh for mild gasification. Laboratory experiments were conducted to identify means of dispersing or emulsifying pitch in water to render is accessible to biocatalysts, and exploratory desulfurization tests on one-gram pitch samples were begun.

  1. Rutting Performance of Airport Hot-Mix Asphalt Characterized by Laboratory Performance Testing, Full-Scale Accelerated Pavement Testing, and Finite Element Modeling

    E-Print Network [OSTI]

    Rushing, John Ford

    2014-04-25T23:59:59.000Z

    California Bearing Ratio DoD Department of Defense DSR Dynamic Shear Rheometer ERDC U.S. Army Engineer Research and Development Center FAA Federal Aviation Administration FN flow number FT flow time HMA Hot Mix Asphalt HVS heavy vehicle simulator... aircraft continue to necessitate modifications in the procedures by which HMA mixtures are designed so that rutting does not become a prevalent distress on airport pavements. The Federal Aviation Administration (FAA) has predominantly required use...

  2. NMR (nuclear magnetic resonance) imaging for detecting binder/plasticizers in green-state structural ceramics. [SiC, Al/sub 2/O/sub 3/, and Si/sub 3/N/sub 4/

    SciTech Connect (OSTI)

    Ellingson, W.A.; Ackerman, J.L.; Gronemeyer, S.; Garrido, L.

    1987-06-01T23:59:59.000Z

    We have explored both a small-bore (<10 cm) experimental imaging system as well as a state-of-the-art medical imaging system relative to detection of the soft-solid (wax-like) binders used in ceramics. The ability to detect binders was evaluated on a 1.5-T medical MRI imager (Siemens Magnetom) using T/sub 1/-weighted imaging techniques and a 10-cm eye coil standard with the system. The ability to detect binders was also studied with a modified small-bore coil Technicare Facility using special rf and gradient coils. The initial results show that a medical system may not be able to detect binders unless elevated temperatures are used, whereas the experimental small-bore system shows the distribution quite well. In addition, higher magnetic field strength should be better for ceramics, since proton signal strength increases rapidly with the magnetic field strength. 11 refs., 9 figs., 3 tabs.

  3. Production of low-sulfur binder pitch from high-sulfur Illinois coals. Technical report, December 1, 1994--February 28, 1995

    SciTech Connect (OSTI)

    Knight, R.A.

    1996-03-01T23:59:59.000Z

    The objective of this project is to produce electrode binder pitch with sulfur content below 0.6 wt% from high-sulfur Illinois coal mild gasification liquids. In previous ICCI projects at IGT, flash thermocracking (FTC) was used to successfully upgrade the properties of mild gasification pitch, yielding a suitable blending stock for use as a binder in the production of carbon electrodes for the aluminum industry. However, in pitches from high-sulfur (4%) Illinois coal, the pitch sulfur content is still unacceptably high at 2%. In this project, two approaches to sulfur reduction are being explored in conjunction with FTC: (1) the use of conventionally cleaned coal with low ({approximately}1%) sulfur as a mild gasification feedstock, and (2) direct biodesulfurization of the liquids prior to FTC. In Case 1, the crude pitch is being produced by mild gasification of IBC-109 coal in an existing IGT bench-scale reactor, followed by distillation to isolate the crude pitch. In Case 2, the crude pitch for biodesulfurization was obtained from Illinois No. 6 coal tests conducted in the IGT mild gasification PRU in 1990. Biodesulfurization is to be performed by contacting the pitch with Rhodococcus Rhodochrous IGTS8 biocatalyst. Following preparation of the crude pitches, pitch upgrading experiments are to be conducted in a continuous FTC reactor constructed in previous ICCI-sponsored studies. The finished pitch is then characterized for physical and chemical properties (density, softening point, QI, TI, coking value, and elemental composition), and compared to typical specifications for binder pitches.

  4. The Effects of Various Conductive Additive and Polymeric Binder Contents on the Performance of a Lithium-ion Composite

    SciTech Connect (OSTI)

    Stevenson, Cynthia; Liu, G.; Zheng, H.; Kim, S.; Deng, Y.; Minor, A.M.; Song, X.; Battaglia, V.S.

    2008-08-07T23:59:59.000Z

    Fundamental electrochemical methods, cell performance tests, and physical characterization tests such as electron microscopy were used to study the effects of levels of the inert materials (acetylene black (AB), a nano-conductive additive, and polyvinylidene difluoride (PVDF), a polymer binder) on the power performance of lithium-ion composite cathodes. The electronic conductivity of the AB/PVDF composites at different compositions was measured with a four-point probe direct current method. The electronic conductivity was found to increase rapidly and plateau at a AB:PVDF ratio 0.2:1 (by weight), with 0.8:1 being the highest conductivity composition. AB:PVDF compositions along the plateau of 0.2:1, 0.4:1, 0.6:1 and 0.8:1 were investigated. Electrodes of each of those compositions were fabricated with different fractions of AB/PVDF to active material. It was found that at the 0.8:1 AB:PVDF, the rate performance improved with increases in the AB/PVDF loading, whereas at the 0.2:1 AB:PVDF, the rate performance improved with decreases in the AB/PVDF loading. The impedance of electrodes made with 0.6:1 AB:PVDF was low and relatively invariant.

  5. Matrix Learning in Learning Vector Quantization

    E-Print Network [OSTI]

    Biehl, Michael

    Zachmann (Computer Graphics) #12;Matrix Learning in Learning Vector Quantization Michael Biehl1 , Barbara

  6. SOLAR HEATING OF TANK BOTTOMS Application of Solar Heating to Asphaltic and Parrafinic Oils Reducing Fuel Costs and Greenhouse Gases Due to Use of Natural Gas and Propane

    SciTech Connect (OSTI)

    Eugene A. Fritzler

    2005-09-01T23:59:59.000Z

    The sale of crude oil requires that the crude meet product specifications for BS&W, temperature, pour point and API gravity. The physical characteristics of the crude such as pour point and viscosity effect the efficient loading, transport, and unloading of the crude oil. In many cases, the crude oil has either a very high paraffin content or asphalt content which will require either hot oiling or the addition of diluents to the crude oil to reduce the viscosity and the pour point of the oil allowing the crude oil to be readily loaded on to the transport. Marginal wells are significantly impacted by the cost of preheating the oil to an appropriate temperature to allow for ease of transport. Highly paraffinic and asphaltic oils exist throughout the D-J basin and generally require pretreatment during cold months prior to sales. The current study addresses the use of solar energy to heat tank bottoms and improves the overall efficiency and operational reliability of stripper wells.

  7. Science Learning+: Phase 1 projects Science Learning+

    E-Print Network [OSTI]

    Rambaut, Andrew

    Science Learning+: Phase 1 projects Science Learning+ Phase 1 projects 2 December 2014 #12..............................................................................................................4 Youth access and equity in informal science learning: developing a research and practice agenda..................................................................................................5 Enhancing informal learning through citizen science..............................................6

  8. Course info Machine Learning

    E-Print Network [OSTI]

    Shi, Qinfeng "Javen"

    info 2 Machine Learning What's Machine Learning? Types of Learning Overfitting Occam's Razor 3 Real's Machine Learning? Types of Learning Overfitting Occam's Razor Machine Learning Using data to uncover Real life problems What's Machine Learning? Types of Learning Overfitting Occam's Razor Formulation

  9. THE LEARNING Cardiff Centre for Lifelong Learning

    E-Print Network [OSTI]

    Davies, Christopher

    for different types of learning. You will need to adopt learning strategies that are most appropriateTHE LEARNING GUIDE Cardiff Centre for Lifelong Learning Canolfan Caerdydd ar gyfer Addysg Gydol Oes www.cardiff.ac.uk/learn www.caerdydd.ac.uk/dysgu #12;The Cardiff Centre for Lifelong Learning provides

  10. Regulatory Binder Instructions Instructions

    E-Print Network [OSTI]

    Church, George M.

    to #1 above (Human Research), maintain the below tabs: a. Logs b. Investigator's Brochure/Device Manual-to-file here). Federal Regulations/Good Clinical Practice GCP: 4.1.1; 8.2.10; 8.3.5 CVs Company CVs #12

  11. LEARNING HERITAGE RESTORATION, LEARNING MATHEMATICS

    E-Print Network [OSTI]

    Spagnolo, Filippo

    of architectural historical heritage. Geometry of a heritage building Describing the geometry of a buildingLEARNING HERITAGE RESTORATION, LEARNING MATHEMATICS Santiago Sanchez-Beitia, Javier Barrallo is the first phase of a heritage restoration work. A precise geometric model must be conceptually simple

  12. REEDMULTIMEDIA LEARNING Cognitive Architectures for Multimedia Learning

    E-Print Network [OSTI]

    Gallo, Linda C.

    REEDMULTIMEDIA LEARNING Cognitive Architectures for Multimedia Learning Stephen K. Reed Center overview of cognitive architectures that can form a theoretical foundation for designing multimedia operations. Architectures that are relevant to multimedia learning include Paivio's dual coding theory

  13. Production of low sulfur binder pitich from high-sulfur Illinois coals. Quarterly report, 1 March 1995--31 May 1995

    SciTech Connect (OSTI)

    Knight, R.A.

    1995-12-31T23:59:59.000Z

    The objective of this project is to produce electrode binder pitch with sulfur content below 0.6 wt% from high-sulfur Illinois coal mild gasification liquids. Previously, flash thermocracking (FTC) was used to successfully upgrade the properties of mild gasification pitch, yielding a suitable blending stock for use as a binder in the production of carbon electrodes for the aluminum industry. However, in pitches from high-sulfur (4%) Illinois coal, the pitch sulfur content (2%) was still higher than preferred. In this project two approaches to sulfur reduction are being explored in conjunction with FTC: (1) the use of a moderate-sulfur (1.2%) Illinois coal as mild gasification feedstock, and (2) direct biodesulfurization of the liquids from high-sulfur coal prior to FTC. In Case 1, the liquids are being produced by mild gasification of IBC-109 coal in a bench-scale fluidized-bed reactor, followed by distillation to isolate the crude pitch. In Case 2, biodesulfurization with Rhodococcus Rhodochrous IGTS8 biocatalyst is being performed on crude pitch obtained from Illinois No. 6 coal tests conducted in the IGT MILDGAS PRU in 1990. Following preparation of the crude pitches, pitch upgrading experiments are being conducted in a continuous FTC reactor constructed in previous ICCI-sponsored studies. This quarter, mild gasification of IBC-109 coal was completed, producing 450 g of coal liquids, which were then distilled to recover 329 g of Case 1 crude pitch. Next month, the pitch will be subjected to FTC treatment and evaluated. Biodesulfurization experiments were performed on Case 2 pitch dispersed in l-undecanol, resulting in sulfur reductions of 15.1 to 21.4%. This was marginally lower than the 24.8% desulfurization obtained in l-dodecanol, but separation of pitch from the dispersant was facilitated by the greater volatility of l-undecanol.

  14. LEARNING... INFORMATION

    E-Print Network [OSTI]

    Strathclyde, University of

    in black and white/ double-sided. To set up a Google Cloud Printer to connect to printers in the LibraryYOUR LIBRARY YOUR LEARNING... YOUR INFORMATION SERVICES YOUR RESOURCES... GOOGLE CLOUD PRINT You can use Google Cloud Print to print from your Chromebook, phone, tablet and Google Apps. PLEASE NOTE

  15. Project Learning What are the "Lessons Learned"

    E-Print Network [OSTI]

    Christian, Eric

    Project Learning What are the "Lessons Learned" requirements? How can you fulfill the requirements the initial Lessons Learned Plan after KDP A and incorporate into the Preliminary Project Plan; Hold a PaL after KDP D/launch, review and submit lessons · Consolidate all Lessons Learned into a Final Lessons

  16. Learning Java

    E-Print Network [OSTI]

    Niemeyer, Patrick

    2005-01-01T23:59:59.000Z

    Version 5.0 of the Java 2 Standard Edition SDK is the most important upgrade since Java first appeared a decade ago. With Java 5.0, you'll not only find substantial changes in the platform, but to the language itself-something that developers of Java took five years to complete. The main goal of Java 5.0 is to make it easier for you to develop safe, powerful code, but none of these improvements makes Java any easier to learn, even if you've programmed with Java for years. And that means our bestselling hands-on tutorial takes on even greater significance. Learning Java is the most widely sou

  17. Learning Curve

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1997-03-28T23:59:59.000Z

    It is a fundamental human characteristic that a person engaged in a repetitive task will improve his performance over time. If data are gathered on this phenomenon, a curve representing a decrease in effort per unit for repetitive operations can be developed. This phenomenon is real and has a specific application in cost analysis, cost estimating, or profitability studies related to the examination of future costs and confidence levels in an analysis. This chapter discusses the development and application of the learning curve.

  18. Scholarship of and Learning

    E-Print Network [OSTI]

    Herbert, Bruce

    is characterized by: A clear focus on student learning. The scholarship of teaching and learning is drivenLeadership for the Scholarship of Teaching and Learning Improve student learning Stimulate and their students learning; many today are trying new classroom approaches in the hopes of strengthening

  19. Learning Communities Peer Mentor

    E-Print Network [OSTI]

    Lin, Zhiqun

    , focused communities in which students, staff, and faculty can learn and grow together. Intended Outcomes Experience -Student Evaluations Archive Materials -Reflections of Previous Peer Mentors -Learning Community Activities -Student Evaluation Archives -Former Mentor Contact list #12;Learning Communities Vision Statement

  20. Use of CaO as an activator for producing a price-competitive non-cement structural binder using ground granulated blast furnace slag

    SciTech Connect (OSTI)

    Kim, Min Sik; Jun, Yubin; Lee, Changha, E-mail: clee@unist.ac.kr; Oh, Jae Eun, E-mail: ohjaeeun@unist.ac.kr

    2013-12-15T23:59:59.000Z

    The use of calcium oxide (CaO) demonstrates a superior potential for the activation of ground granulated blast furnace slag (GGBFS), and it produces a higher mechanical strength than calcium hydroxide [Ca(OH){sub 2}]. The mechanical strength differences between CaO- and Ca(OH){sub 2}-activated GGBFS binders are explored using isothermal calorimetry, powder X-ray diffraction, thermogravimetric and differential thermal analysis (TGA and DTA) as well as compressive strength testing. Calcium silicate hydrate (C–S–H), Ca(OH){sub 2} and a hydrotalcite-like phase are found as reaction products in all samples. The TGA and DTA results indicate that the use of CaO produces more C–S–H, although this is not likely to be the primary cause of higher strength development in the CaO-activated GGBFS. Rather, other factors such as porosity may govern the strength at a higher order of magnitude. Significant reduction of Ca(OH){sub 2} occurs only with the use of Ca(OH){sub 2}, followed by the formation of carbonate (CaCO{sub 3}), indicating carbonation. -- Highlights: •CaO showed a better potential for the activation of GGBFS than Ca(OH){sub 2}. •Strength test, XRD, TGA/DTA and isothermal calorimetry are used. •C-S-H, Ca(OH){sub 2}, and a hydrotalcite-like phase are found in all samples. •The use of Ca(OH){sub 2} causes some degree of carbonation.

  1. Stochastic Learning and Optimization

    E-Print Network [OSTI]

    Cao, Xiren

    space [56]. The fundamental elements of learning and optimization are two types of performanceXi-Ren Cao Stochastic Learning and Optimization - A Sensitivity-Based Approach With 119 Figures, 27 be easily identified. Therefore, learning techniques have to be utilized. A Brief Description of Learning

  2. DOE Lessons Learned

    Broader source: Energy.gov [DOE]

    DOE Lessons Learned Information Services Catches the Eye of Corporations and Educational Institutions

  3. Learning Transformations From Video

    E-Print Network [OSTI]

    Wang, Ching Ming

    2010-01-01T23:59:59.000Z

    on Natural Video . . . . . . . . . . . . . . . . .3 Learning Continuous Transformation from VideoProposed Video Coder

  4. Lignite pellets and methods of agglomerating or pelletizing

    DOE Patents [OSTI]

    Baker, Albert F. (Pittsburgh, PA); Blaustein, Eric W. (Pittsburgh, PA); Deurbrouck, Albert W. (Pittsburgh, PA); Garvin, John P. (Pittsburgh, PA); McKeever, Robert E. (Pittsburgh, PA)

    1981-01-01T23:59:59.000Z

    The specification discloses lignite pellets which are relatively hard, dust resistant, of generally uniform size and free from spontaneous ignition and general degradation. Also disclosed are methods for making such pellets which involve crushing as mined lignite, mixing said lignite with a binder such as asphalt, forming the lignite binder mixture into pellets, and drying the pellets.

  5. Lessons Learned | Department of Energy

    Energy Savers [EERE]

    Lessons Learned Lessons Learned The Department of Energy utilizes project management lessons learned (PMLL) in the execution of DOE capital asset projects to improve current and...

  6. Incorporating Learning Styles in a Computer-Supported Collaborative Learning

    E-Print Network [OSTI]

    Griffiths, Nathan

    they think and learn. Roschelle and Teasley focus more on the nature of interaction in collaborative learning a specific problem. Student reading groups for language learning courses are an example of learning groupsIncorporating Learning Styles in a Computer-Supported Collaborative Learning Model Shuangyan Liua

  7. Project Learning I. What are the "Lessons Learned"

    E-Print Network [OSTI]

    Christian, Eric

    Project Learning I. What are the "Lessons Learned" requirements? II. How of a Lessons Learned Plan · Project Learning Processes · Timeline of Project Learning Ac;5/4/2012 11 #12;Timeline of AcYviYes · Review lessons learned from other relevant

  8. Cycle Track Lessons Learned

    E-Print Network [OSTI]

    Bertini, Robert L.

    Cycle Track Lessons Learned #12;Presentation Overview · Bicycling trends · Cycle track lessons learned · What is a "Cycle track"? · Essential design elements of cycle tracks Separation Width Crossing

  9. Learning poisson binomial distributions

    E-Print Network [OSTI]

    Daskalakis, Constantinos

    We consider a basic problem in unsupervised learning: learning an unknown Poisson Binomial Distribution. A Poisson Binomial Distribution (PBD) over {0,1,...,n} is the distribution of a sum of n independent Bernoulli random ...

  10. What is Continual Learning?

    Broader source: Energy.gov [DOE]

    Continual Learning is a change initiative which is used to help develop and grow a learning culture within DOE. Employee development in any organization and at any level is never ending.

  11. Specific Learning Difficulties

    E-Print Network [OSTI]

    Anderson, Jim

    Dyslexia and other Specific Learning Difficulties (SpLDs) A guide for tutors Enabling Services Supporting you to succeed #12;2 Contents Dyslexia Support ............................................................................................................ 3 Recognising students with dyslexia or other specific learning difficulties................. 4

  12. Machine LearningMachine Learning Stephen Scott

    E-Print Network [OSTI]

    Scott, Stephen D.

    represents if-then rules num-of-wheelsnon-truck hauls-cargo relative-height truck yesno non-truck non-truck about trucks & combines Memorizes: But will he recognize others? #12;1/21/2004 Stephen Scott, Univ is MachineAgain, what is Machine Learning?Learning? Given several labeled examples of a concept ­ E.g. trucks

  13. Learning and risk aversion

    E-Print Network [OSTI]

    Oyarzun, Carlos

    2009-06-02T23:59:59.000Z

    This dissertation contains three essays on learning and risk aversion. In the first essay we consider how learning may lead to risk averse behavior. A learning rule is said to be risk averse if it is expected to add more probability to an action...

  14. SUNY Programs: Experiential Learning

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    SUNY Programs: Experiential Learning Internships Volunteer & Service-Learning Field Work quite broad, although the offerings are more limited than the programs in the general section. Teaching the programs with experiential learning opportunities offered by SUNY campuses. These listings give just

  15. Learning to change, changing to learn : district conditions for organizational learning

    E-Print Network [OSTI]

    Guthrie, Victor Anthony

    2011-01-01T23:59:59.000Z

    are each focused on student learning. ” By their reports,2011). The focused theme of students learning continues and

  16. Advanced Binder for Electrode Materials

    Broader source: Energy.gov (indexed) [DOE]

    calendar life Cost: High manufacture cost (Research in high energy system) Partners LBNL (PI. Vince Battaglia, Venkat Srinivasan, Robert Kostecki, Wangli Yang, Lin-Wang Wang)...

  17. Advanced Binder for Electrode Materials

    Broader source: Energy.gov (indexed) [DOE]

    calendar life Cost: High manufacture cost (Research in high energy system) Partners LBNL (PI. Vince Battaglia, Venkat Srinivasan, Robert Kostecki, Jordi Carbana-Jimenez, Wanli...

  18. "Magic Angle Precession" Bernd Binder

    E-Print Network [OSTI]

    Binder, Bernd

    by geometric phases, which are induced by high- speed relativistic rotations and are relevant to propulsion, quark, confinement, heavy nuclei, Sommerfeld, fine structure, propulsion, SO(3), nonlinear, chaotic maps in the vicinity of a magnetic monopole or singularity (Dirac, 1931) that could be located on the tip

  19. Lessons Learned

    SciTech Connect (OSTI)

    Dougan, A D; Blair, S

    2006-11-14T23:59:59.000Z

    LLNL turned in 5 Declaration Line Items (DLI's) in 2006. Of these, one was declared completed. We made some changes to streamline our process from 2005, used less money, time and fewer team members. This report is a description of what changes we made in 2006 and what we learned. Many of our core review team had changed from last year, including our Laboratory Director, the Facility safety and security representatives, our Division Leader, and the OPSEC Committee Chair. We were able to hand out an AP Manual to some of them, and briefed all newcomers to the AP process. We first went to the OPSEC Committee and explained what the Additional Protocol process would be for 2006 and solicited their help in locating declarable projects. We utilized the 'three questions' from the AP meeting last year. LLNL has no single place to locate all projects at the laboratory. We talked to Resource Managers and key Managers in the Energy and Environment Directorate and in the Nonproliferation Homeland and International Security Directorate to find applicable projects. We also talked to the Principal Investigators who had projects last year. We reviewed a list of CRADA's and LDRD projects given to us by the Laboratory Site Office. Talking to the PI's proved difficult because of vacation or travel schedules. We were never able to locate one PI in town. Fortunately, collateral information allowed us to screen out his project. We had no problems in downloading new versions of the DWA and DDA. It was helpful for both Steve Blair and Arden Dougan to have write privileges. During the time we were working on the project, we had to tag-team the work to allow for travel and vacation schedules. We had some difficulty locating an 'activities block' in the software. This was mentioned as something we needed to fix from our 2005 declaration. Evidently the Activities Block has been removed from the current version of the software. We also had trouble finding the DLI Detail Report, which we included in our signature process last year. This report had been inadvertently omitted from the version of the software we used. We typed our own version of the Detail Report and the package was sent to signature. The final software was not available in time to include the DLI Report. We streamlined our review process for the Technical and Security Reviews by sending one letter to each entity instead of getting separate approvals from the subordinates, then getting an approval from the lead reviewer. The Review process took 20 days, far shorter than the 6 weeks it required last year. It will be difficult to shorten the process much more. One of our projects had associated laboratory work at NIF. This required many discussions with NIF management during the review process and before their paperwork came to them for signature since they were not aware of the Additional Protocol.

  20. Statistical Learning Theory of Protein Dynamics

    E-Print Network [OSTI]

    Haas, Kevin

    2013-01-01T23:59:59.000Z

    integrated statistical learning and simulation approach tomolecular simulation, using statistical learning theory tomolecular simulation and statistical learning theory of

  1. www.usask.ca/learning_charter OurLearningVision

    E-Print Network [OSTI]

    Saskatchewan, University of

    other institutions of learning. Our students undertake programs of many different types and durations types: Discovery,Knowledge, Integrity,Skills, and Citizenship. Core Learning Goals · Apply critical1 www.usask.ca/learning_charter OurLearningVision The University of Saskatchewan Learning Charter

  2. Machine Learning: Foundations and Algorithms

    E-Print Network [OSTI]

    Ben-David, Shai

    with accident prevention systems that are built using machine learning algorithms. Machine learning is also to us). Machine learning tools are concerned with endowing programs with the ability to "learn if the learning process succeeded or failed? The second goal of this book is to present several key machine

  3. Variability of hot mix asphalt produced with reclaimed asphalt pavement

    E-Print Network [OSTI]

    Yang, Guiqin

    1999-01-01T23:59:59.000Z

    percent does not significantly influence the mix variability; it is desirable to use a large percentage of RAP in the Type S-I mix, i.e., more than 40% RAP; iii) On the average, the aggregate variability increases after transportation and stockpiling...

  4. Designing for Learning: Multiplayer Digital Game Learning Environments

    E-Print Network [OSTI]

    Kim, Chung

    2010-01-01T23:59:59.000Z

    supercharged! : learning physics with digital simulationsimulations, computer games, and pedagogy in e-learning andlearning environment based on the blending microworlds, simulations,

  5. reprinted from Learning through Multimedia

    E-Print Network [OSTI]

    Boyer, Edmond

    reprinted from Learning through Multimedia Roy D. Pea Institute for Research on Learning #12;Learning through Multimedia Roy D. Pea Institute for Research on writinguniteswritersandreaders.Society might come to regard multimedia literacy as essential as writing is today

  6. Chemical characterization of beach asphalts

    E-Print Network [OSTI]

    May, Lloyd Alexander

    1973-01-01T23:59:59.000Z

    and flameless atomic absorption spectroscopy for vanadium, nickel, and iron. The neutron activation procedure was shown to be superior for vanadium, but no significant difference in methods was noted for nickel and iron. Other trace metals were done... by activation analysis. These include: mercury, gold, chromium, bromine, zinc, scandium, cobalt, and antimony. Use of the vanadium to nickel ratio, and of other trace element data, was discussed. As a key to understanding the nature of vanadium in crude...

  7. Optimization Online - Enclosing Machine Learning

    E-Print Network [OSTI]

    Wei Xunkai

    2007-10-20T23:59:59.000Z

    Oct 20, 2007 ... Abstract: This report introduces a new machine learning paradigm called enclosing machine learning for data mining. This novel method ...

  8. Treat Teaching as Learned Profession

    E-Print Network [OSTI]

    Helen Duffy

    2004-01-01T23:59:59.000Z

    a Difference ACCORD UC/ Treat Teaching as Learned ProfessionPublic Policy Series PB-009-1104 Treat Teaching as Learned

  9. Towards more human-like concept learning in machines : compositionality, causality, and learning-to-learn

    E-Print Network [OSTI]

    Lake, Brenden M

    2014-01-01T23:59:59.000Z

    People can learn a new concept almost perfectly from just a single example, yet machine learning algorithms typically require hundreds or thousands of examples to perform similarly. People can also use their learned concepts ...

  10. The Learning Environment

    E-Print Network [OSTI]

    Howard, Jeff W.

    2005-05-10T23:59:59.000Z

    As a 4-H volunteer, you have tremendous influence in determining the learning that takes place within your 4-H club or group. Adult volunteers also have the task of making the learning experiences attractive to young people. Here are some important...

  11. Residential Learning University Housing

    E-Print Network [OSTI]

    Rusu, Adrian

    Residential Learning & University Housing Handbook 2008 - 2009 A Guide for Residential Living on the Campus of Rowan University #12;Welcome to Residential Learning & University Housing! The primary purpose of the Office of Residential Life & University Housing is to assist and support students in the pursuit

  12. Learning Strategies for Vocabulary Development 105 Learning Strategies for

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    of success (Gu, 1994, 2003a; Moir & Nation, 2002). Largely two types of learning outcome measures have beenLearning Strategies for Vocabulary Development 105 Learning Strategies for Vocabulary Development of changes in vocabulary learning strategies and how these changes are related to vocabulary development. One

  13. Perceptual learning: learning to see Dov Sagi and David Tanne

    E-Print Network [OSTI]

    Sagi, Dov

    the existence of two types of learning, fast (binocular) and slow (monocular). The slow phase requiresPerceptual learning: learning to see Dov Sagi and David Tanne The Weizmann Institute of Science, Rehovot, Israel Perceptual learning in vision has been found to be highly specific for simple stimulus

  14. e-Learning Seoul National University e-Teaching & Learning

    E-Print Network [OSTI]

    Bahk, Saewoong

    e-Learning Seoul National University e-Teaching & Learning http://etl.snu.ac.kr #12;about eTL eTL ? eTL(e-Teaching & Learning) , , , , . e , , , , , , , , , (, ) , SSO(Single Sign On) , , #12;e-Teaching & Learning System 4 1. Moodle Moodle Modular Object

  15. Distance learning meets Open Source Future-oriented Distance Learning

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -learning on college level. One of the main problems is that study material as well as concepts have to be transformed component of the Open Source movement. Key words: distance learning, open source 1. INTRODUCTORY REMARKS of each semester. 2. THE CORE PROBLEM WHEN USING E-LEARNING-TOOLS IN DISTANCE LEARNING Most people

  16. BLENDED AND ONLINE LEARNING IN

    E-Print Network [OSTI]

    Ellis, Randy

    ) "Flipped classroom" - focus on active learning and enhanced student engagement in the classroom #12;First dissatisfied with student learning experience #12;Blended Learning Initiative Large, first-year courses student engagement improve student learning outcomes improve knowledge retention #12;Framework for Blended

  17. FACULTY GUIDE Service-Learning

    E-Print Network [OSTI]

    Massachusetts at Lowell, University of

    ?.............................................................. 5 Benefits of Service-Learning..................................... 5 Types of Experiential LearningFACULTY GUIDE to Service-Learning University of Massachuse s Lowell 20132014 #12;2 WELCOME Dear Colleague, Thank you for taking the time to read this introductory guide to service- learning

  18. Time series association learning

    DOE Patents [OSTI]

    Papcun, George J. (Santa Fe, NM)

    1995-01-01T23:59:59.000Z

    An acoustic input is recognized from inferred articulatory movements output by a learned relationship between training acoustic waveforms and articulatory movements. The inferred movements are compared with template patterns prepared from training movements when the relationship was learned to regenerate an acoustic recognition. In a preferred embodiment, the acoustic articulatory relationships are learned by a neural network. Subsequent input acoustic patterns then generate the inferred articulatory movements for use with the templates. Articulatory movement data may be supplemented with characteristic acoustic information, e.g. relative power and high frequency data, to improve template recognition.

  19. Computers for Learning

    Broader source: Energy.gov [DOE]

    Through Executive Order 12999, the Computers for Learning Program was established to provide Federal agencies a quick and easy system for donating excess and surplus computer equipment to schools...

  20. Experiments in service learning

    E-Print Network [OSTI]

    Banzaert, Amy, 1976-

    2006-01-01T23:59:59.000Z

    Service learning, an educational method that involves the application of academic work to projects that benefit under-served communities, was explored in two complementary forms. First, the development of an alternative ...

  1. Robot learning [TC Spotlight

    E-Print Network [OSTI]

    Tedrake, Russell Louis

    Creating autonomous robots that can learn to act in unpredictable environments has been a long-standing goal of robotics, artificial intelligence, and the cognitive sciences. In contrast, current commercially available ...

  2. Sharing Lessons Learned

    SciTech Connect (OSTI)

    Mohler, Bryan L.

    2004-09-01T23:59:59.000Z

    Workplace safety is inextricably tied to the culture – the leadership, management and organization – of the entire company. Nor is a safety lesson fundamentally different from any other business lesson. With these points in mind, Pacific Northwest National Laboratory recast its lessons learned program in 2000. The laboratory retained elements of a traditional lessons learned program, such as tracking and trending safety metrics, and added a best practices element to increase staff involvement in creating a safer, healthier work environment. Today, the Lessons Learned/Best Practices program offers the latest business thinking summarized from current external publications and shares better ways PNNL staff have discovered for doing things. According to PNNL strategic planning director Marilyn Quadrel, the goal is to sharpen the business acumen, project management ability and leadership skills of all staff and to capture the benefits of practices that emerge from lessons learned. A key tool in the PNNL effort to accelerate learning from past mistakes is one that can be easily implemented by other firms and tailored to their specific needs. It is the weekly placement of Lessons Learned/Best Practices articles in the lab’s internal electronic newsletter. The program is equally applicable in highly regulated environments, such as the national laboratories, and in enterprises that may have fewer external requirements imposed on their operations. And it is cost effective, using less than the equivalent of one fulltime person to administer.

  3. Learning Innate Face Preferences

    E-Print Network [OSTI]

    2003-01-01T23:59:59.000Z

    Newborn humans preferentially orient to face-like patterns at birth, but months of experience with faces is required for full face processing abilities to develop. Several models have been proposed for how the interaction of genetic and evironmental influences can explain this data. These models generally assume that the brain areas responsible for newborn orienting responses are not capable of learning and are physically separate from those that later learn from real faces. However, it has been difficult to reconcile these models with recent discoveries of face learning in newborns and young infants. We propose a general mechanism by which genetically specified and environmentdriven preferences can coexist in the same visual areas. In particular, newborn face orienting may be the result of prenatal exposure of a learning system to internally generated input patterns, such as those found in PGO waves during REM sleep. Simulating this process with the HLISSOM biological model of the visual system, we demonstrate that the combination of learning and internal patterns is an efficient way to specify and develop circuitry for face perception. This prenatal learning can account for the newborn preferences for schematic and photographic images of faces, providing a computational explanation for how genetic influences interact with experience to construct a complex adaptive system.

  4. Formative Assessment, Equity, and Opportunity to Learn

    E-Print Network [OSTI]

    Hilberg, Soleste

    2012-01-01T23:59:59.000Z

    inquiry focused on student learning, and to explore theirinquiry focused on student learning, and (c) how this workinquiry focused on student learning. Interrelatedly, there

  5. LESSONS LEARNED AND BEST PRACTICES PROGRAM MANUAL

    E-Print Network [OSTI]

    Gravois, Melanie C.

    2007-01-01T23:59:59.000Z

    Experience Program. LESSONS LEARNED AND BEST PRACTICESUpon receipt of a Lessons Learned/Best Practices Feedbackreview disseminated Lessons Learned/Best Practices Briefings

  6. Unsupervised Learning of Object Descriptors and Compositions

    E-Print Network [OSTI]

    Ye, Xingyao

    2012-01-01T23:59:59.000Z

    Reported Experiments A New Experiment on Human Learning ofof previous experiments on human chunk learning, along withnew psychophysical experiment, where human observers learned

  7. Learning with online constraints : shifting concepts and active learning

    E-Print Network [OSTI]

    Monteleoni, Claire E. (Claire Elizabeth), 1975-

    2006-01-01T23:59:59.000Z

    Many practical problems such as forecasting, real-time decision making, streaming data applications, and resource-constrained learning, can be modeled as learning with online constraints. This thesis is concerned with ...

  8. Adding a Learning Module -1 Adding a Learning Module

    E-Print Network [OSTI]

    Cui, Yan

    Items focused on a specific subject that students can navigate at their own pace. For example or No for Enforce Sequential Viewing for the Learning Module. Selecting Yes will require students to view the Learning Module within a Table of Contents, which students can also use to navigate through the Learning

  9. : Abduction, Learning. A System for Learning Abductive Logic

    E-Print Network [OSTI]

    Dix, Juergen

    f g Keywords Abstract : Abduction, Learning. 1 A System for Learning Abductive Logic Programs Ferrara, Italy We present the system LAP for learning abductive logic programs from examples and from a background abductive theory. A new type of induction problem has been defined as an extension

  10. Language and Learning in the Digital Age

    E-Print Network [OSTI]

    Rama, Paul S.

    2012-01-01T23:59:59.000Z

    projects examine the types of learning that occur thoughis even possible, this type of learning into schools? To

  11. The Alameda Corridor: Lessons Learned

    E-Print Network [OSTI]

    Bertini, Robert L.

    The Alameda Corridor: Lessons Learned Plus Past and Future Challenges Presented to: Portland State Corridor **Trucked around Corridor but leaves or enters Southern California by rail. #12;Lessons Learned

  12. Discrimination learning in horses

    E-Print Network [OSTI]

    Yeates, B. F

    1976-01-01T23:59:59.000Z

    Science DISCRIMINATION LEARNING IN HORSES A Thesis by B. F. Yeates Approved as to styIe aod content by: ~C airman oi . , Ommlttec. g ~liemoer Pe comber 1 S76 ABSTRACT Discrimination Learning in Horses (December 1976) B. F. Yeates, B. S. , Texas... was subsequently given 7 days discrimination training on each of' three different stimuli in three successive periods. Ti percert correct response" vtas used to measure period, stimuli and horse efforts. iiean percentages for the three periods were 42? 51. 9...

  13. How Minds Work Memories and Learning

    E-Print Network [OSTI]

    Memphis, University of

    & Learning 7 Types of Human Learning Requiring Distinct Mechanisms · Perceptual learning ­ Identify1 How Minds Work Memories and Learning Stan Franklin Computer Science Division & Institute for Intelligent Systems The University of Memphis #12;How Minds Work: Memory & Learning 2 Human Learning

  14. Writing and Assessing Learning Outcomes

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Outcomes... Are student-focused Focus on learning resulting from an activity rather than the activity outcomes) to describing effectiveness (Learning outcomes) · Links Student Affairs and Academic Affairs; links curricular and co-curricular #12;Biggest challenges to assessing learning · Students do

  15. Cognitive Effects of Multimedia Learning

    E-Print Network [OSTI]

    Gallo, Linda C.

    Cognitive Effects of Multimedia Learning Robert Z. Zheng University of Utah, USA Hershey · New York of multimedia learning / Robert Zheng, editor. p. cm. Includes bibliographical references and index. Summary: "This book identifies the role and function of multimedia in learning through a collection of research

  16. Century Learning through Apple Technology

    E-Print Network [OSTI]

    21st Century Learning through Apple Technology July 4 ­ 5, 2013 This exciting institute will appeal to educators who wish to enhance their teaching in support of 21st century learning using Apple technology. This institute begins with a keynote address that looks at how new technologies can enhance 21st century learning

  17. Applied inductive learning Louis Wehenkel

    E-Print Network [OSTI]

    Wehenkel, Louis

    problems 20 2.3.1 Classes 20 2.3.2 Types of classi cation problems 20 2.3.3 Learning and test sets 21 2Applied inductive learning Louis Wehenkel University of Li`ege Faculty of Applied Sciences Course;#12;APPLIED INDUCTIVE LEARNING COURSE NOTES : OCTOBER 2000 LOUIS A. WEHENKEL University of Li#12;ege

  18. Applied inductive learning Louis Wehenkel

    E-Print Network [OSTI]

    Wehenkel, Louis

    .3.2 Types of classification problems 20 2.3.3 Learning and test sets 21 2.3.4 Decision or classificationApplied inductive learning Louis Wehenkel University of Liâ??ege Faculty of Applied Sciences Courseâ??e'' #12; #12; APPLIED INDUCTIVE LEARNING COURSE NOTES : OCTOBER 2000 LOUIS A. WEHENKEL University of Li

  19. Evolution, Learning & Information Brian Skyrms

    E-Print Network [OSTI]

    Barrett, Jeffrey A.

    SIGNALS Evolution, Learning & Information Brian Skyrms #12;Signals: Evolution, Learning. The Flow of Information 4. Evolution 5. Evolution in Lewis Signaling Games 6. Deception 7. Learning 8 of evolution by differential reproduction and natural variation. In particular we use models of replicator

  20. Hybrid Machine Learning Princeton University

    E-Print Network [OSTI]

    Mohri, Mehryar

    : Learn an apprentice policy !A such that V(!A) # V(!E) where the value function V(!) is unknown. Expert policy !E Apprentice policy !A Learning algorithm #12;Apprenticeship Learning !! Our contribution: New apprentice policy than existing algorithms. #12;Assumptions !! Definition: Let µ(!) be the feature vector

  1. Software Carpentry: Lessons Learned

    E-Print Network [OSTI]

    Greg Wilson

    2014-01-29T23:59:59.000Z

    Over the last 15 years, Software Carpentry has evolved from a week-long training course at the US national laboratories into a worldwide volunteer effort to raise standards in scientific computing. This article explains what we have learned along the way the challenges we now face, and our plans for the future.

  2. Software Carpentry: Lessons Learned

    E-Print Network [OSTI]

    Wilson, Greg

    2013-01-01T23:59:59.000Z

    Over the last 15 years, Software Carpentry has evolved from a week-long training course at the US national laboratories into a worldwide volunteer effort to raise standards in scientific computing. This article explains what we have learned along the way the challenges we now face, and our plans for the future.

  3. Reflecting to learn mathematics

    E-Print Network [OSTI]

    Rachael Kenney

    2013-08-09T23:59:59.000Z

    integrating reflective practice and writing to learn mathematics (WTLM) in order ... concern or interest as well as potential explanations for and solutions to ..... teacher, I know I need to be universally good in both language and numbers. ... The PSMTs' reflections also revealed that completing the prompts encouraged them to.

  4. Association and Abstraction in Sequential Learning:“What is Learned?” Revisited

    E-Print Network [OSTI]

    Fountain, Stephen B.; Doyle, Karen E.

    2011-01-01T23:59:59.000Z

    serial-pattern learning; our SPAM simulations simply testedwalk" simulation model of multiple-pattern learning in ain rat serial pattern learning. In two simulation studies (

  5. Learning style impact on knowledge gains in human patient simulation

    E-Print Network [OSTI]

    Shinnick, MA; Woo, MA

    2015-01-01T23:59:59.000Z

    identifying with most types of learning styles. © 2014others prefer re?ective types of learning opportuni- ties,learning style. Types of Learning Styles Kolb depicts

  6. Robotics for Learning

    E-Print Network [OSTI]

    Toh, Dennis; Lim, Matthew; Wee, Loo Kang; Ong, Matthew

    2015-01-01T23:59:59.000Z

    Teaching Robotics is about empowering students to create and configure robotics devices and program computers to nurture in students the skill sets necessary to play an active role in society. The robot in Figure 1 focuses on the design of scaffolds and physical assembly methods, coupled with a computer logic program to make that makes it move or behave in a very precise (remote controlled or autonomous) manner. This enables students to investigate, explore and refine the program to affect the robots. The Robotics approach takes into account the increasing popularity of Computer Science and the learning by doing (Schank, Berman, & Macpherson, 1999) approach to solve complex problems and use computers meaningfully in learning (Barron & Darling-Hammond, 2008; Jonassen, Howland, Marra, & Crismond, 2008). In Singapore, teachers and students in Woodlands Ring Secondary and Rulang Primary have incorporated robotics to varying extents into formal and informal curricula. In addition, other less expensive ...

  7. Observational learning in horses

    E-Print Network [OSTI]

    Baer, Katherine Louise

    1979-01-01T23:59:59.000Z

    . One group served as control subjects while the other group functioned as a treated group (observers). The observers were allowed to watch a correctly performed discrimination task prior to testing of a learning response using the same task.... Discrimination testing was conducted on all horses daily for 14 days with criterion set at seven out of eight responses correct with the last five consecutively correct. The maximum number of trials performed without reaching set criterion was limited...

  8. Learning planar ising models

    SciTech Connect (OSTI)

    Johnson, Jason K [Los Alamos National Laboratory; Chertkov, Michael [Los Alamos National Laboratory; Netrapalli, Praneeth [STUDENT UT AUSTIN

    2010-11-12T23:59:59.000Z

    Inference and learning of graphical models are both well-studied problems in statistics and machine learning that have found many applications in science and engineering. However, exact inference is intractable in general graphical models, which suggests the problem of seeking the best approximation to a collection of random variables within some tractable family of graphical models. In this paper, we focus our attention on the class of planar Ising models, for which inference is tractable using techniques of statistical physics [Kac and Ward; Kasteleyn]. Based on these techniques and recent methods for planarity testing and planar embedding [Chrobak and Payne], we propose a simple greedy algorithm for learning the best planar Ising model to approximate an arbitrary collection of binary random variables (possibly from sample data). Given the set of all pairwise correlations among variables, we select a planar graph and optimal planar Ising model defined on this graph to best approximate that set of correlations. We present the results of numerical experiments evaluating the performance of our algorithm.

  9. Preference Learning Johannes Furnkranz, Eyke Hullermeier

    E-Print Network [OSTI]

    Fürnkranz, Johannes

    types of prediction problems, the learning from/of preferences has recently received a lot of attention in the machine learning literature. Like other types of complex learning tasks, preference learning deviates provide a systematic exposition of different types of preference learning problems nor a comprehensive

  10. Benefits of multisensory learning Ladan Shams1

    E-Print Network [OSTI]

    Shams, Ladan B.

    of learning? Acquiring this skill can involve many types of learning and here we focus on aspectsBenefits of multisensory learning Ladan Shams1 and Aaron R. Seitz2 1 Department of Psychology, Riverside, CA 92521, USA Studies of learning, and in particular perceptual learning, have focused

  11. Organizational scenarios for the use of learning

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Organizational scenarios for the use of learning objects Henry Hermans and Fred de Vries October 2006 Learning objects in practice 2 #12;Organizational scenarios for the use of learning objects page 2 of 22 Colophon Organizational scenario's for the use of learning objects Learning objects in practice 2

  12. NEW E-LEARNING SERVICES BASED ON MOBILE AND UBIQUITOUS COMPUTING: UBI-LEARN PROJECT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    their learning, both in and out of class. Simulations, learning games, threaded discussions, and videoNEW E-LEARNING SERVICES BASED ON MOBILE AND UBIQUITOUS COMPUTING: UBI-LEARN PROJECT Mona Laroussi 1'Ascq cedex - France KEYWORDS: Mobile learning, Ubiquitous learning, Wireless technology Abstract Ubiquitous

  13. Metafora: A Web-Based Platform for Learning to Learn Together in Science and Mathematics

    E-Print Network [OSTI]

    McLaren, Bruce Martin

    via discovery, educational simulations, social learning techniques, collaborative learning toolsMetafora: A Web-Based Platform for Learning to Learn Together in Science and Mathematics Toby as an emerging pedagogy for supporting Learning to Learn Together in science and mathematics education. Our goal

  14. Learning Tiny Theories Tim Menzies

    E-Print Network [OSTI]

    Menzies, Tim

    Learning Tiny Theories Tim Menzies , Rajesh Gunnalan , Kalaivani Appukutty , Amarnath Srinivasan Engineering, University of British Columbia, Canada {gunnalan|avani|amarnath}@csee

  15. Machine Learning for Global Optimization

    E-Print Network [OSTI]

    schoen,,,

    Noname manuscript No. (will be inserted by the editor). Machine Learning for Global Optimization. A. Cassioli?. · D. Di Lorenzo. ?. · M. Locatelli. ??. · F. Schoen.

  16. Scaling Reinforcement Learning Paradigms for Motor Control 

    E-Print Network [OSTI]

    Vijayakumar, Sethu; Peters, Jan; Schaal, Stefan

    Reinforcement learning offers a general framework to explain reward related learning in artificial and biological motor control. However, current reinforcement learning methods rarely scale to high dimensional movement systems ...

  17. Feedback controller parameterizations for reinforcement learning

    E-Print Network [OSTI]

    Roberts, John William

    Reinforcement Learning offers a very general framework for learning controllers, but its effectiveness is closely tied to the controller parameterization used. Especially when learning feedback controllers for weakly stable ...

  18. Sequential Causal Learning in Humans and Rats

    E-Print Network [OSTI]

    Lu, Hongjing; Rojas, Randall R.; Beckers, Tom; Yuille, Alan

    2008-01-01T23:59:59.000Z

    Figure 2 shows simulations of learning of weight for cue A (a previous simulation of sequential learning based on thesimulations are in good agreement with experimental findings. Keywords: Bayesian inference; model selection; sequential causal learning;

  19. Sequential Causal Learning in Humans and Rats

    E-Print Network [OSTI]

    Hongjing Lu; Randall R. Rojas; Tom Beckers; Alan Yuille

    2011-01-01T23:59:59.000Z

    Figure 2 shows simulations of learning of weight for cue A (a previous simulation of sequential learning based on thesimulations are in good agreement with experimental findings. Keywords: Bayesian inference; model selection; sequential causal learning;

  20. Lessons Learned Quarterly Report, March 2004

    Broader source: Energy.gov [DOE]

    Welcome to the 38th quarterly report on lessons learned in the NEPA process. In this issue we are continuing a multi-part examination of lessons learned from Lessons Learned.

  1. Lessons Learned Quarterly Report, June 2004

    Broader source: Energy.gov [DOE]

    Welcome to the 39th quarterly report on lessons learned in the NEPA process. In this issue we are continuing a multi-part examination of lessons learned from Lessons Learned.

  2. Technology Enhanced Learning and Distance Learning February 21, 2008

    E-Print Network [OSTI]

    Southern California, University of

    Technology Enhanced Learning and Distance Learning February 21, 2008 Call for Nominations: Provost's Prize for Teaching with Technology Eligibility: Candidates must be a tenure-track or non's Prize for Teaching with Technology will be awarded to up to two recipients. Each recipient will receive

  3. Team Leader, Learning for Livelihoods Commonwealth of Learning

    E-Print Network [OSTI]

    Krishna Alluri; Rainer Zachmann; Country Collaborators; Ajaga Nji; Collins Osei; Reuben Aggor; Edward Badu; Geoffrey Kironchi; Adewale Adekunle; Adeolu Ayanwale; Morolake Adekunle; Moses Ubaru; Aliyageen Alghali; Bob Conteh; Edwin Momoh; Camilius Sanga; Ayubu Jacob Churi; Siza Tumbo; Krishna Alluri; Rainer Zachmann; Anthony Youdeowei; Savithri Swaminathan

    Moses Tenywa, Bernard Fungo, Mungule Chikoye and Martin KaongaThe Commonwealth of Learning (COL) is an intergovernmental organisation created by Commonwealth Heads of Government to encourage the development and sharing of open learning and distance education knowledge, resources and technologies.

  4. APRIL: Active Preference-learning based Reinforcement Learning

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    behaviors (section 2). Resuming the preference-based policy learning (Ppl) approach [2], the con- tribution of the present paper is to extend Ppl along the lines of active learning, in order to minimize the number Bayesian approaches hardly scale up to large-dimensional continuous spaces. Secondly, the Ppl setting

  5. NEPA Lessons Learned Questionnaire

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of theTechno-economicOctober 2013 -DepartmentLessons Learned

  6. Homeokinesis A new principle to back up evolution with learning

    E-Print Network [OSTI]

    Polani, Daniel

    of learningDifferent types of learningDifferent types of learningDifferent types of learning #12 space required Homeokinesis 8 September 2008 Different types of learningDifferent types of learningDifferent types of learningDifferent types of learning #12;· So far, only fairly simple successful examples, e

  7. Category and Perceptual Learning in Subjects with Treated Wilson's Disease

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    many similarities. In both types of learning, observers arebetween different types of category and perceptual learning.

  8. E-learning? Technology enhanced

    E-Print Network [OSTI]

    Loch, Birgit

    9/15/2010 1 E-learning? Technology enhanced teaching and learning in symbol-based disciplines? Swinburne University of Technology, Melbourne, Australia 2 #12;9/15/2010 2 An Example: Make t the subject 2 3 Swinburne University of Technology, Melbourne, Australia 3 HMS111 An Example: Make t the subject 2

  9. Kinematic Motor Learning Wolfram Schenck

    E-Print Network [OSTI]

    Moeller, Ralf

    Kinematic Motor Learning Wolfram Schenck Computer Engineering Group Faculty of Technology Bielefeld-521-106-6440 mail: wschenck@ti.uni-bielefeld.de Abstract This paper focuses on adaptive motor control in the kinematic domain. Several motor learning strategies from the literature are adopted to kinematic problems

  10. Adaptation, Learning, and Optimization over

    E-Print Network [OSTI]

    California at Los Angeles, University of

    Adaptation, Learning, and Optimization over Networks Ali H. Sayed University of California at Los 2014 A. H. Sayed DOI: 10.1561/2200000051 Adaptation, Learning, and Optimization over Networks Ali H . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.6 Notation and Symbols . . . . . . . . . . . . . . . . . . . . 8 2 Optimization by Single Agents

  11. Documentation Requirements for Learning Disabilities

    E-Print Network [OSTI]

    Documentation Requirements for Learning Disabilities Students, faculty, staff, and campus guests wishing to request accommodations due to learning disabilities should refer to the following documentation of interest. C) Documentation must be typed, dated, signed by the evaluator and submitted to ODR

  12. TECHNICAL NOTE FISH PROTEINS AS BINDERS

    E-Print Network [OSTI]

    products . Recently in th meat and poultry industry, there has been interest in binding tog th r pieces and storage at temperatures above freezing . The following describes some of the re- search on the use of fish various flavoring agents such as ocean quahogs, ,Iaine shrimp, and crab meat. All these were highly

  13. Nanoscale Heterostructures and Thermoplastic Resin Binders: Novel...

    Broader source: Energy.gov (indexed) [DOE]

    and improve the coulombic efficiency (CE) in subsequent cycles * Coating of SiC composite with suitable element or compound surface control additives (SCA) to improve CE and...

  14. CATALYSIS IN BIOPOLYMER CHEMISTRY Joseph Bartholomew Binder

    E-Print Network [OSTI]

    Raines, Ronald T.

    -organic solvent mixtures. The combination of the second-generation Hoveyda-Grubbs complex and solvents such as 1 civilization. Production of renewable building blocks through such transformations is the focus of the second yields the liquid fuel 2,5-dimethylfuran, offering a two-step direct route from biomass to biofuels

  15. Nanoscale Heterostructures and Thermoplastic Resin Binders: Novel...

    Broader source: Energy.gov (indexed) [DOE]

    Motor Company * National Laboratory * Dr. A. Manivannan, NETL * Dr. Vincent Battaglia, LBNL * Other Universities * Dr. Spandan Maiti, University of Pittsburgh * Research Faculty...

  16. Nanoscale Heterostructures and Thermoplastic Resin Binders: Novel...

    Broader source: Energy.gov (indexed) [DOE]

    * Industries * Ford Motor Company * National Laboratory * Dr. Robert Kostecki, LBNL * Dr. Vincent Battaglia, LBNL * Other Universities * Dr. Spandan Maiti, University of...

  17. Nanoscale Heterostructures and Thermoplastic Resin Binders: Novel

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in Many Devils Wash,EnergyNanophosphate technology forLithium-Ion

  18. Iteratively extending time horizon reinforcement learning

    E-Print Network [OSTI]

    Wehenkel, Louis

    - Belgium y Research Fellow FNRS, #3; Postdoctoral Researcher FNRS Abstract. Reinforcement learning aims

  19. Team Based Learning (TBL) Scott Bryant

    E-Print Network [OSTI]

    Dyer, Bill

    Team Based Learning (TBL) Bill Brown Scott Bryant Susan Dana MSU College of Business #12;Agenda · Overview of Team Based Learning (TBL) · RATs! · Team Learning Exercises · Graded Work Product · Challenges with TBL · Q & A #12;Overview of Team Based Learning · Comprehensive teaching strategy to enable active

  20. Nonparametric Bayesian Policy Priors for Reinforcement Learning

    E-Print Network [OSTI]

    Doshi-Velez, Finale P.

    We consider reinforcement learning in partially observable domains where the agent can query an expert for

  1. Session 3280 Why Bother Learning about

    E-Print Network [OSTI]

    Larkin, Teresa L.

    Session 3280 Why Bother Learning about Learning Styles and Psychological Types? Teresa Larkin instruction is designed with learning styles in mind 1 - 3 . The adoption of any type of new teaching and and psychological types will be addressed. A brief overview of two learning style models and assessment instruments

  2. Preference Learning Johannes Furnkranz, Eyke Hullermeier

    E-Print Network [OSTI]

    Hüllermeier, Eyke

    with novel types of prediction problems, the learning from/of preferences has recently received a lot of attention in the machine learning literature. Just as other types of complex learning tasks, preference or the type of information provided as an input to the learning system. Needless to say, this short article

  3. Learning and Memory Eric R. Kandel

    E-Print Network [OSTI]

    Ulanovsky, Nachum

    and memory we are interested in several questions. What are the major forms of P.1228 learning? What types of information about the environment are learned most easily? Do different types of learning give riseBack 62 Learning and Memory Eric R. Kandel Irving Kupfermann Susan Iversen BEHAVIOR IS THE RESULT

  4. Foundations for a New Science of Learning

    E-Print Network [OSTI]

    complex learning. In computer simulations, starting the learn- ing process with a low-resolution sensoryFoundations for a New Science of Learning Andrew N. Meltzoff,1,2,3 * Patricia K. Kuhl,1,3,4 Javier Movellan,5,6 Terrence J. Sejnowski5,6,7,8 Human learning is distinguished by the range and complexity

  5. E ective Neuronal Learning with Ine ective Hebbian Learning Rules

    E-Print Network [OSTI]

    Chechik, Gal

    ; Palm & Sommer, 1996) derived the learn- ing rule that maximizes the network memory capacity, and showed of papers (Palm & Sommer, 1988; Palm, 1992; Palm & Sommer, 1996), Palm and Sommer have further studied

  6. Effective Neuronal Learning with Ineffective Hebbian Learning Rules

    E-Print Network [OSTI]

    Chechik, Gal

    ; Palm & Sommer, 1996) derived the learn- ing rule that maximizes the network memory capacity, and showed of papers (Palm & Sommer, 1988; Palm, 1992; Palm & Sommer, 1996), Palm and Sommer have further studied

  7. Implementing Learning Design to support web-based learning

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Walton Hall, Milton Keynes, MK7 6AA. UK. ** Educational Technology Expertise Centre (OTEC), Open Expertise Centre (OTEC) at the Open University of the Netherlands (OUNL), who produced a Learning Design

  8. Learning with Online Constraints: Shifting Concepts and Active Learning

    E-Print Network [OSTI]

    Monteleoni, Claire E.

    2006-09-01T23:59:59.000Z

    Many practical problems such as forecasting, real-time decisionmaking, streaming data applications, and resource-constrainedlearning, can be modeled as learning with online constraints. Thisthesis is concerned with analyzing ...

  9. Assessing Student Learning We typically assess student learning in terms of their grades on

    E-Print Network [OSTI]

    Champagne, Frances A.

    need to be student-focused rather than instructor-focused. Focus on the learning resulting fromAssessing Student Learning We typically assess student learning in terms of their grades on quizzes should be linked to our learning objectives. To properly assess student learning, you need to know what

  10. 1Building virtual learning communities and the learning of mathematics teacher student

    E-Print Network [OSTI]

    Spagnolo, Filippo

    1 1Building virtual learning communities and the learning of mathematics teacher student Salvador of learning for student teachers. Firstly, I shall describe the characteristics of the design of learning trajectories in a video-based learning environment focusing on the exploration of mathematics teaching to help

  11. Promoting Self Directed Learning 1 Running head: PROMOTING SELF DIRECTED LEARNING

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    as incompatible. This is due to the origins of both types of learning environments which, when consideredPromoting Self Directed Learning 1 Running head: PROMOTING SELF DIRECTED LEARNING Promoting Self Directed Learning in Simulation Based Discovery Learning Environments through Intelligent Support Koen

  12. Learning to be different: acquired skills, social learning, frequency dependence, and environmental variation

    E-Print Network [OSTI]

    Mangel, Marc

    skills for multiple prey types. (3) The learning curve for acquiring new foraging skills is acceleratingLearning to be different: acquired skills, social learning, frequency dependence, and environmental Question: How does the ability to improve foraging skills by learning, and to transfer that learned

  13. Multiclass learning with simplex coding

    E-Print Network [OSTI]

    Mroueh, Youssef

    In this paper we discuss a novel framework for multiclass learning, defined by a suitable coding/decoding strategy, namely the simplex coding, that allows us to generalize to multiple classes a relaxation approach commonly ...

  14. Learning in the labor market

    E-Print Network [OSTI]

    Li, Jin, Ph. D. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    This thesis is a collection of three independent essays that study the implication of learning on labor mobility, labor supply, wage distribution, wage dynamics, and allocations of workers under different assumptions about ...

  15. SPANISH STUDIES Program Learning Outcomes

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    SPANISH STUDIES Program Learning Outcomes 1. Students will achieve advanced language proficiency in Spanish: they will have the ability to narrate language and literacy skills in Spanish: Students will acquire a foundation

  16. Learning task-specific similarity

    E-Print Network [OSTI]

    Shakhnarovich, Gregory

    2006-01-01T23:59:59.000Z

    The right measure of similarity between examples is important in many areas of computer science. In particular it is a critical component in example-based learning methods. Similarity is commonly defined in terms of a ...

  17. Social Learning in Social Networks

    E-Print Network [OSTI]

    Lamberson, PJ

    This paper analyzes a model of social learning in a social network. Agents decide whether or not to adopt a new technology with unknown payoffs based on their prior beliefs and the experiences of their neighbors in the ...

  18. RESIDENTIAL PROGRAM FOR LANGUAGE LEARNING

    E-Print Network [OSTI]

    Loudon, Catherine

    RESIDENTIAL PROGRAM FOR LANGUAGE LEARNING Live on-campus in 2014-15 and participate in a unique as part of a residential community in Arroyo Vista! Open to all undergraduate students with 2-3 years

  19. Learning Outcomes Author: Paul Surgenor

    E-Print Network [OSTI]

    2010 #12;Learning Outcomes "On completion of this [module/programme] students will be able to..." Biggs alignment (Biggs, 2002). Outcomes should also address a variety of cognitive levels, ensuring that students

  20. Enhancing the Engineering Curriculum: Defining Discovery Learning at Marquette University

    E-Print Network [OSTI]

    Nagurka, Mark L.

    learning is a form of student-centered learning in which the focus shifts from the teacher to the learn, student-centered learning, active learning. I. INTRODUCTION The College of Engineering at Marquette forms of experiential learning. Other schools include student-centered learning methods, such as active

  1. Behavioral/Systems/Cognitive Rule-Based Learning Explains Visual Perceptual Learning

    E-Print Network [OSTI]

    Klein, Stanley

    ). Alternatively, Mollon and Danilova (1996) hypothesized that learning occurs at a central site, but what learning hypoth- esis (Mollon and Danilova, 1996), the complete location transfer of learning indicates

  2. LEARNING AND ORGANIZATIONAL CHANGE (LOC) The Learning and Organizational Change concentration helps you explore how

    E-Print Network [OSTI]

    Shahriar, Selim

    LEARNING AND ORGANIZATIONAL CHANGE (LOC) CURRICULUM The Learning and Organizational Change change through learning and organizational design. The assessment, design and implementation of knowledge-based systems, involving people, technology and organizational structures and culture are a particular strength

  3. Age Related Changes in Motion Perception and Perceptual Learning

    E-Print Network [OSTI]

    Bower, Jeffrey Dennis

    2010-01-01T23:59:59.000Z

    simple stimuli after training. This type of learning differsfrom other types of learning in that it is hypothesized toin the other type of stimuli, transfer of learning between

  4. Learning in human-dolphin interactions at zoological facilities

    E-Print Network [OSTI]

    Sweeney, Diane L.

    2009-01-01T23:59:59.000Z

    expectations and the types of learning. Potential physicalevidence of multiple types of learning. In the spate ofis taken, multiple types of learning, beyond knowledge gain

  5. Psychology and Aging Normal Aging and the Dissociable Prototype Learning

    E-Print Network [OSTI]

    Maddox, W. Todd

    -based and information-integration classification learning (Ashby & Mad- dox, 2005). Recent research suggests & Mad- dox, 2004). Another important type of classification learning is prototype learning (Homa

  6. Learning style impact on knowledge gains in human patient simulation

    E-Print Network [OSTI]

    Shinnick, MA; Woo, MA

    2014-01-01T23:59:59.000Z

    the preference for simulation as a learning style. Singap.of high- ?delity simulation-based learning: a case reportdelity simulation: does it correlate with learning styles?

  7. Learning style impact on knowledge gains in human patient simulation

    E-Print Network [OSTI]

    Shinnick, MA; Woo, MA

    2015-01-01T23:59:59.000Z

    the preference for simulation as a learning style. Singap.of high- ?delity simulation-based learning: a case reportdelity simulation: does it correlate with learning styles?

  8. associative learning performance: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    performance Tsodyks, Misha 7 & Investigating Learning Deficits Associated with Dyslexia CiteSeer Summary: An artificial grammar learning task was used to define two learning...

  9. avoidance learning paradigm: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    across learning trials corresponded to sigmoid curves that could 33 Developmental dyslexia and implicit learning in childhood: evidence using the artificial grammar learning...

  10. association learning: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Paris-Sud XI, Universit de 4 & Investigating Learning Deficits Associated with Dyslexia CiteSeer Summary: An artificial grammar learning task was used to define two learning...

  11. Lessons Learned: Peer Exchange Calls Fall 2014 | Department of...

    Energy Savers [EERE]

    Calls Fall 2014 Lessons Learned: Peer Exchange Calls Fall 2014 Better Buildings Residential Network, Lessons Learned: Peer Exchange Calls Fall 2014. Lessons Learned: Peer...

  12. Learning how to play Nash, potential games and alternating ...

    E-Print Network [OSTI]

    Megiddo

    2012-01-31T23:59:59.000Z

    Page 1 ... of the most important topic is how do players learn to play Nash equilibria (Chen and Gazzale [17]). Learning dynamics include Bayesian learning, ...

  13. National Wind Distance Learning Collaborative

    SciTech Connect (OSTI)

    Dr. James B. Beddow

    2013-03-29T23:59:59.000Z

    Executive Summary The energy development assumptions identified in the Department of Energy's position paper, 20% Wind Energy by 2030, projected an exploding demand for wind energy-related workforce development. These primary assumptions drove a secondary set of assumptions that early stage wind industry workforce development and training paradigms would need to undergo significant change if the workforce needs were to be met. The current training practice and culture within the wind industry is driven by a relatively small number of experts with deep field experience and knowledge. The current training methodology is dominated by face-to-face, classroom based, instructor present training. Given these assumptions and learning paradigms, the purpose of the National Wind Distance Learning Collaborative was to determine the feasibility of developing online learning strategies and products focused on training wind technicians. The initial project scope centered on (1) identifying resources that would be needed for development of subject matter and course design/delivery strategies for industry-based (non-academic) training, and (2) development of an appropriate Learning Management System (LMS). As the project unfolded, the initial scope was expanded to include development of learning products and the addition of an academic-based training partner. The core partners included two training entities, industry-based Airstreams Renewables and academic-based Lake Area Technical Institute. A third partner, Vision Video Interactive, Inc. provided technology-based learning platforms (hardware and software). The revised scope yielded an expanded set of results beyond the initial expectation. Eight learning modules were developed for the industry-based Electrical Safety course. These modules were subsequently redesigned and repurposed for test application in an academic setting. Software and hardware developments during the project's timeframe enabled redesign providing for student access through the use of tablet devices such as iPads. Early prototype Learning Management Systems (LMS) featuring more student-centric access and interfaces with emerging social media were developed and utilized during the testing applications. The project also produced soft results involving cross learning between and among the partners regarding subject matter expertise, online learning pedagogy, and eLearning technology-based platforms. The partners believe that the most significant, overarching accomplishment of the project was the development and implementation of goals, activities, and outcomes that significantly exceeded those proposed in the initial grant application submitted in 2009. Key specific accomplishments include: (1) development of a set of 8 online learning modules addressing electrical safety as it relates to the work of wind technicians; (3) development of a flexible, open-ended Learning Management System (LMS): (3) creation of a robust body of learning (knowledge, experience, skills, and relationships). Project leaders have concluded that there is substantial resource equity that could be leverage and recommend that it be carried forward to pursue a Next Stage Opportunity relating to development of an online core curriculum for institute and community college energy workforce development programs.

  14. Winter Maintenance Guidelines for Porous Asphalt Maintenance

    E-Print Network [OSTI]

    environmental impact. · Apply deicing treatments during, and after storms as necessary to control compact snow and ice not removed by plowing. · Sand application should be limited since its use will increase the need

  15. Cracking Resistance of Asphalt Rubber Mix Versus

    E-Print Network [OSTI]

    Mobasher, Barzin

    . crack length curve for KR #12;Load vs. CMOD 0.0 0.5 1.0 1.5 2.0 Crack mouth opening, mm 0 500 1000 1500 non-linear fracture mechanics ·Compliance approach ·R-Curve approach #12;Conventional Fatigue Testing factor R-Curve approach Resistance to initiation & growth of cracks Evaluates fracture toughness

  16. Asphalt, Concrete, and Turf Maintenance and Preservation

    E-Print Network [OSTI]

    Minnesota, University of

    preventive maintenance, pavement distress and identification, and best practices for the maintenance Consultant WSB and Associates, Inc. 763-287-7184 jstewart@wsbeng.com #12;2 Preventive Maintenance Preventive maintenance and minor rehab, and is often used to repair environmental damage. Preventive maintenance narrows

  17. Anisotropic Characterization of Asphalt Mixtures in Compression 

    E-Print Network [OSTI]

    Zhang, Yuqing 1983-

    2012-10-08T23:59:59.000Z

    and physically related to anisotropic modulus ratio. The anisotropic viscoelasticity was represented by complex moduli and Poisson's ratios in separate orthogonal directions that were determined by an efficient testing protocol. Master curve models were proposed...

  18. Microstructural viscoplastic continuum model for asphalt concrete 

    E-Print Network [OSTI]

    Tashman, Laith

    2004-09-30T23:59:59.000Z

    test. A comprehensive experiment was conducted to systematically determine the model parameters and the evolution laws that describe AC hardening, anisotropy, and damage. The experiment consisted of a set of compressive triaxial strength tests...

  19. ORIGINAL CONTRIBUTION Rheological characterization of asphalt

    E-Print Network [OSTI]

    Mather, Patrick T.

    compared favorably with those obtained using conventional parallel-plate torsional flow in a commercial and are aggregates of polar aromatic compounds (Maruska and Rao 1987). Maltenes are nonpolar aliphatic hydrocarbons time (Anderson and Marasteanu 1999). Because of their codification, the conventional tests

  20. Cool Asphalt Shingles | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. DepartmentEnergy This partAs theFebruary09Contractor(DOE's)|ScottBerkeley

  1. Lessons Learned from Safety Events

    SciTech Connect (OSTI)

    Weiner, Steven C.; Fassbender, Linda L.

    2012-11-01T23:59:59.000Z

    The Hydrogen Incident Reporting and Lessons Learned website (www.h2incidents.org) was launched in 2006 as a database-driven resource for sharing lessons learned from hydrogen-related safety events to raise safety awareness and encourage knowledge-sharing. The development of this database, its first uses and subsequent enhancements have been described at the Second and Third International Conferences on Hydrogen Safety. [1,2] Since 2009, continuing work has not only highlighted the value of safety lessons learned, but enhanced how the database provides access to another safety knowledge tool, Hydrogen Safety Best Practices (http://h2bestpractices.org). Collaborations with the International Energy Agency (IEA) Hydrogen Implementing Agreement (HIA) Task 19 – Hydrogen Safety and others have enabled the database to capture safety event learnings from around the world. This paper updates recent progress, highlights the new “Lessons Learned Corner” as one means for knowledge-sharing and examines the broader potential for collecting, analyzing and using safety event information.

  2. Recap Lecture 1 Concepts of Supervised Learning (SL)

    E-Print Network [OSTI]

    Shi, Qinfeng "Javen"

    ) Main types of Supervised Learning Classification Novelty detection Regression 3 Classification Learning (SL) Classification algorithms Supervised Learning definition revisit Main types of Supervised Learning Classification Novelty detection Regression Main types of SL We have (input, correct output

  3. Arts-Infused Learning in Middle Level Classrooms

    E-Print Network [OSTI]

    Lorimer, Maureen R.

    2011-01-01T23:59:59.000Z

    rich portrait of the types of learning and learning outcomesuncovered the types of arts-infused learning, along with thetypes of activities) and quality of arts-infused learning (

  4. National FCEV Learning Demonstration: All Composite Data Products...

    Broader source: Energy.gov (indexed) [DOE]

    Vehicle (FCEV) Learning Demonstration. 54021.pdf More Documents & Publications Controlled Hydrogen Fleet & Infrastructure Analysis National Hydrogen Learning Demonstration Status...

  5. An introduc+on to Machine Learning

    E-Print Network [OSTI]

    Wehenkel, Louis

    , the analysis, and the application of algorithms that allow computers to learn l Learning: l A computer;5 Applica+ons: autonomous driving l DARPA Grand challenge 2005: build a robot capable

  6. Total learning : education beyond the classroom

    E-Print Network [OSTI]

    Im, Soo O., 1972-

    2002-01-01T23:59:59.000Z

    What is a quality learning space? This thesis is a study of a prototype for secondary school to provide a stimulating learning environment and a nurturing growing space in an urban site through exploration of different ...

  7. Lessons Learned Tracy Glauser, M.D.

    E-Print Network [OSTI]

    Lessons Learned Tracy Glauser, M.D. Cincinnati Children's Hospital Medical Center #12;Overview 1. Lessons Learned a. NeuroNEXT Executive Committee b. NINDS clinical trials (NSD-K) study section c. PI

  8. Early word learning through communicative inference

    E-Print Network [OSTI]

    Frank, Michael C., Ph. D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    How do children learn their first words? Do they do it by gradually accumulating information about the co-occurrence of words and their referents over time, or are words learned via quick social inferences linking what ...

  9. Learning strategies and performance in organizational teams

    E-Print Network [OSTI]

    Bresman, Henrik M

    2005-01-01T23:59:59.000Z

    (cont.) shows that vicarious learning is positively associated with performance. I argue that vicarious team learning is an under-explored dimension of what makes teams and organizations competitive. The chapter concludes ...

  10. SCIENCE LEARNING+: PLANNING GRANTS APPLICATION GUIDELINES

    E-Print Network [OSTI]

    Rambaut, Andrew

    + is an international initiative that will explore and understand the power of informal learning experiences inside are part of the Science Learning+ scheme which aims to make a transformational step to improve

  11. 6.867 Machine Learning, Fall 2002

    E-Print Network [OSTI]

    Jaakkola, Tommi S. (Tommi Sakari)

    Principles, techniques, and algorithms in machine learning from the point of view of statistical inference; representation, generalization, and model selection; and methods such as linear/additive models, active learning, ...

  12. Learning physics in context: a study of student learning about electricity and magnetism

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    re-centres the discussion of student learning in physics to focus on context. In order to do soLearning physics in context: a study of student learning about electricity and magnetism This paper and inextricable role of context in student learning. This work sits within a broader effort to create and analyze

  13. WRITING EXPECTED LEARNING OUTCOMES FOR AWRITING EXPECTED LEARNING OUTCOMES FOR A COURSECOURSE

    E-Print Network [OSTI]

    Rock, Chris

    for a course, it is a good idea to think broadly. Course-level expected learning outcomes do not need to focus will know). Be sure to include learning outcomes that describe what the student can do and who they are2424 WRITING EXPECTED LEARNING OUTCOMES FOR AWRITING EXPECTED LEARNING OUTCOMES FOR A COURSECOURSE

  14. Developing Program Learning Outcomes Page 1 DevelopingProgramLearningOutcomes

    E-Print Network [OSTI]

    Dyer, Bill

    ..." you help ensure that the focus is on student learning and abilities. These are not student learning, 2011, R. W. Larsen Student learning outcomes (SLOs) can be written for a course, a program, or an institution. This document focuses specifically on learning outcomes for programs (e.g., degree programs

  15. Learning Defect Predictors:Lessons from the Trenches Learning Defect Predictors

    E-Print Network [OSTI]

    Menzies, Tim

    Learning Defect Predictors:Lessons from the Trenches Learning Defect Predictors: Lessons from the Trenches Tim Menzies LCSEE, WVU tim@menzies.us October 28, 2008 1 / 40 #12;Learning Defect Predictors:Lessons change the rules of the game. 2 / 40 #12;Learning Defect Predictors:Lessons from the Trenches

  16. Visual Design of coherent Technology-Enhanced Learning Systems: a few lessons learned from CPM language

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Visual Design of coherent Technology-Enhanced Learning Systems: a few lessons learned from CPM Systems: a few lessons learned from CPM language Abstract. Visual instructional design languages currently Botturi ; Todd Stubbs (Ed.) (2007) 254-280" #12;-1- Visual Design of coherent Technology-Enhanced Learning

  17. 09s1: COMP9417 Machine Learning and Data Mining Machine Learning for Numeric

    E-Print Network [OSTI]

    Bain, Mike

    · define the problem of non-linear regression · define neural network learning in terms of non-linear the regression and model tree approaches for non-linear regression COMP9417: April 1, 2009 Machine Learning learning) learning non-linear predictors via hidden nodes between input and output · regression trees

  18. Scaffolding Self-Explanation to Improve Learning in Exploratory Learning Environments.

    E-Print Network [OSTI]

    Bunt, Andrea

    explore the available instructional material [11]. In theory, this type of active learning should enable of open learning environments for different types of learners, we have been working on devising adaptiveScaffolding Self-Explanation to Improve Learning in Exploratory Learning Environments. Andrea Bunt

  19. Using Learning Styles and Preferences to Incorporate Emerging E-learning Tools in Teaching

    E-Print Network [OSTI]

    Yang, Yun

    across all learner types. 1. Introduction The adoption level of emerging e-learning tools is on the riseUsing Learning Styles and Preferences to Incorporate Emerging E-learning Tools in Teaching Nauman@ict.swin.edu.au Abstract Emerging e-learning tools have the potential to enrich academic environments. However

  20. 1654 Learning and memory Perceptual and motor factors of implicit skill learning

    E-Print Network [OSTI]

    Nemeth, Dezso

    , auditory, etc.), and into consciousness types (implicit and explicit) [2]. Implicit motor skill learning1654 Learning and memory Perceptual and motor factors of implicit skill learning Dezso Nemetha,b , Emese Hallgato´a , Karolina Janacseka , Timea Sa´ndora and Zsuzsa Londec Implicit skill learning

  1. Reinforcement Learning in the brain Reading: Y Niv, Reinforcement learning in the brain, 2009.

    E-Print Network [OSTI]

    Seričs, Peggy

    basic types of animal conditioning animal learning) ow do these relate to RL? 20 Monday, 8 March 2010Reinforcement Learning in the brain · Reading: Y Niv, Reinforcement learning in the brain, 2009. wo Reinforcement learning and the brain: the problems we face all day · Decision making at all levels

  2. Empirical Bayes for Learning to Learn Tom Heskes tom@mbfys.kun.nl

    E-Print Network [OSTI]

    Heskes, Tom

    mul­ titask learning, linking theoretical results to practical simulations. In our model all tasksEmpirical Bayes for Learning to Learn Tom Heskes tom@mbfys.kun.nl SNN, University of Nijmegen are combined in a single feedforward neu­ ral network. Learning is implemented in a Bayesian fashion

  3. Scientific Discovery Learning with Computer Simulations Scientific Discovery Learning with Computer

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Scientific Discovery Learning with Computer Simulations 1 Scientific Discovery Learning with Computer Simulations 2 Abstract Scientific discovery learning is a highly self-directed and constructivistic form of learning. A computer simulation is a type of computer-based environment that is very

  4. Learning from Roman Seawater Concrete

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 -of EnergyLeadershipMn4CaLearningLearning

  5. Engaging Faculty With Rethinking Learning and Teaching With Technology

    E-Print Network [OSTI]

    Szmolyan, Peter

    for student learning'. (within the lecture as well as out of class ) Shift the focus from `how do I teach this student learning - educational implications ­ `learning time' / `learning space' During this presentation Online or face to face ? #12;"Learning is not a spectator sport. Students do not learn much just

  6. Learning Community Peer Mentor Supervisor's Manual

    E-Print Network [OSTI]

    Lin, Zhiqun

    Learning Community Peer Mentor Supervisor's Manual #12;Table of Contents Introduction.........................................................................................................................................4 Timeline for Hiring Mentors.......................................................................................................7 Supervision of Mentors

  7. Webinar: National Hydrogen Learning Demonstration Status

    Broader source: Energy.gov [DOE]

    Video recording and text version of the webinar, "National Hydrogen Learning Demonstration Status," originally presented on February 6, 2012.

  8. Learning inverse kinematics via crosspoint function decomposition

    E-Print Network [OSTI]

    Torras, Carme

    industrial robots, that greatly reduces the number of movements needed to learn or relearn the IK to a given

  9. LOWER BOUNDS ON LEARNING RANDOM STRUCTURES WITH

    E-Print Network [OSTI]

    Reyzin, Lev

    of Learning Parity PAC PAC w/ noise "noisy parity" Statistical Queries Yes [Gauss] O(2n/logn) [BKW] maybe

  10. Hyperparameter Learning for Graph Based Semi-supervised Learning Algorithms

    E-Print Network [OSTI]

    Lee, Wee Sun

    Statistical Machine Learning Program National ICT Australia, Canberra, Australia and CSL, RSISE, ANU, Canberra, Australia xinhua.zhang@nicta.com.au Wee Sun Lee Department of Computer Science National University for the harmonic energy minimization method; this is done by minimizing the leave-one-out prediction error

  11. What is Machine Learning? About the Course Example Machine Learning

    E-Print Network [OSTI]

    Kjellström, Hedvig

    of the course Written exam (tentamen) Four labs Bonus Points Each lab finished (successfully examined) before its deadline gives one bonus point. Max bonus (=4) raises the final grade one step. Bonus can not save you from F (failed). Bonus points can not be saved to next year. What is Machine Learning? About

  12. What is Machine Learning? About the Course Example Machine Learning

    E-Print Network [OSTI]

    Kjellström, Hedvig

    of the course Written exam (tentamen) Four labs Bonus Points Each lab finished (successfully examined) before its deadline gives one bonus point. Max bonus (=4) raises the final grade one step. Bonus can not save you from F (failed). Bonus points can not be saved to next year. #12;What is Machine Learning? About

  13. Why Machine Learning and Games? Machine Learning in Video Games

    E-Print Network [OSTI]

    Hunt, Galen

    Controller Car Behaviour AI Driving Drivatar Racing Line Behaviour Model Drivatar Learning System Drivatar AI Driving #12;#12;Two phase process: 1. Pre-generate possible racing lines prior to the race from Conclusions #12;Adaptive avatar for driving Separate game mode Basis of all in-game AI Basis of "dynamic

  14. Spring 2012 Mobile Learning Scholars Assessment Report

    E-Print Network [OSTI]

    Barrash, Warren

    is an immersive semester of exploration focused on leveraging mobile learning strategies to achieve course goals and on student learning. During the Spring 2012 semester, two cohorts of faculty were supported. Each faculty of the experience was assessed in the following ways: a) students enrolled in these mLearning courses were surveyed

  15. Service-Learning & Student Civic Engagement

    E-Print Network [OSTI]

    Service-Learning & Student Civic Engagement: Journeys toward Discovery, Contribution & Civic is service-learning? Intentional student engagement that combines community service with academic instruction and/or co-curricular learning that is focused on critical, reflective thinking and civic

  16. Satellite Navigation Integrity Assurance: Lessons Learned

    E-Print Network [OSTI]

    Stanford University

    Satellite Navigation Integrity Assurance: Lessons Learned from Hurricane Katrina ION GNSS 2008 by the FAA Satellite Navigation Program Office #12;17 September 2008 Lessons Learned from Hurricane Katrina 2 for probabilistic modeling and analysis #12;17 September 2008 Lessons Learned from Hurricane Katrina 3 Key Sources

  17. SPECIAL SEMINAR Cheating Lessons: Learning from

    E-Print Network [OSTI]

    Liberzon, Daniel

    SPECIAL SEMINAR Cheating Lessons: Learning from Academic Dishonesty SPONSORED BY THE CENTER Lang is author of four books, the most recent of which are Cheating Lessons: Learning from Aca- demic FOR INNOVATION IN TEACHING & LEARNING AND NATIONAL CENTER FOR PROFESSIONAL & RESEARCH ETHICS Thurs, May 29, 2014

  18. Lessons Learned from the journ to Institutional

    E-Print Network [OSTI]

    Hemmers, Oliver

    Lessons Learned from the journ to Institutional TransformationOctober 2013 University of Las Vegas I'll talk a little about what we've learned through an NSF Institutional Transformation grant- group preferences, more work to communicate, tokenism if learn

  19. ARTIFICIAL INTELLIGENCE ] Learning One Subprocedure per Lesson

    E-Print Network [OSTI]

    VanLehn, Kurt

    ARTIFICIAL INTELLIGENCE ] Learning One Subprocedure per Lesson Kurt VanLehn Department be called learning from lesson s'equence.~, because the extra information given to the learner is embedded section ,of this article, a variant of learning from lesson sequcnccs will bc discusscd whercm lessons arc

  20. INCOSE 2007 1 Lessons Learned From

    E-Print Network [OSTI]

    de Weck, Olivier L.

    INCOSE 2007 1 Lessons Learned From Industrial Validation of COSYSMO 17th INCOSE Symposium Dr. Gan is not standardized · Model development process yielded 11 lessons learned Valerdi, R., Rieff, J., Roedler, G., Wheaton, M., Lessons Learned from Collecting Systems Engineering Data, Conference on Systems Engineering

  1. Learning Structured Perceptrons for Coreference Resolution

    E-Print Network [OSTI]

    Reyle, Uwe

    Conclusion 2 #12;Title Breakdown Learning Structured Perceptrons for Coreference Resolution with Latent president and chief operating officer, succeeding [Gary Wilber]. 3 #12;Title Breakdown Learning Structured president and chief operating officer, succeeding [Gary Wilber]. 3 #12;Title Breakdown Learning Structured

  2. The Computational Cognitive Neuroscience of Learning and

    E-Print Network [OSTI]

    Elsevier Ltd. All rights reserved 77 #12;experience. We will briefly discuss1 these three types of learning and reinforcement-learning tasks differ in the type of feedback received by the learner (i.e., explicit correction these three types of learning are instantiated in neural computations. One of the earliest proposals

  3. META-LEARNING Concepts and Techniques

    E-Print Network [OSTI]

    Vilalta, Ricardo

    .g., types of example distributions) under which a learning strategy is most appropriate. From a practicalChapter 1 META-LEARNING Concepts and Techniques Ricardo Vilalta University of Houston Christophe Giraud-Carrier ELCA Informatique SA Pavel Brazdil University of Porto Abstract The field of meta-learning

  4. Accelerated Learning without Semantic Similarity: Indirect Objects

    E-Print Network [OSTI]

    Friedman, Nir

    types. Transfer apparently facilitates the learning of this type of information from the input1 Accelerated Learning without Semantic Similarity: Indirect Objects ANAT NINIO* Abstract The hypothesis was tested that transfer and facilitation of learning in early syntactic development does not rely

  5. Machine Learning for Signature Verification Harish Srinivasan

    E-Print Network [OSTI]

    types of learning to be accomplished. In the first, the training set consists of genuines and forgeriesMachine Learning for Signature Verification Harish Srinivasan , Sargur N. Srihari and Matthew J it can be viewed as one that involves machine learning from a population of signatures. There are two

  6. Order Effects in Incremental Learning 1. Introduction

    E-Print Network [OSTI]

    Langley, Pat

    of incremental learning and introducing some distinctions among types of order effects. We then turn to a moreOrder Effects in Incremental Learning 1. Introduction Intelligent agents, including humans, exist in an environment that changes over time. Thus, it seems natural that models of learning in such agents take

  7. Neuronal Representations of Learning Sensorimotor Skills

    E-Print Network [OSTI]

    of learning-related changes: additional controls and simulations....68-74 V. Viewing and Doing: SimilarNeuronal Representations of Learning Sensorimotor Skills Thesis submitted for the degree "Doctor.......................................................................................26-47 II. Preparatory Activity in Motor Cortex Reflects Learning of Local Visuomotor Skills

  8. Scientific Data Analysis via Statistical Learning

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    observations and simulations. Statistical machine learning algorithms have enormous potential to provide data, and the analysis of hurricanes and tropical storms in climate simulations. #12;Supervised Learning for SupernovaScientific Data Analysis via Statistical Learning Raquel Romano romano at hpcrd dot lbl dot gov

  9. Henry and Fred Learn about Lead

    E-Print Network [OSTI]

    Holsinger, Kent

    Henry and Fred Learn about Lead Joan Bothell Activity book #12;Henry and Fred Learn about Lead the children's storybook Henry and Fred Learn about Lead/Enrique y Federico aprenden sobre el plomo (2003 of this activity book. The Henry and Fred storybook is about keeping children safe from lead poisoning, a serious

  10. Environmental Restoration Disposal Facility Lessons Learned

    SciTech Connect (OSTI)

    Caulfield, R.

    2012-07-12T23:59:59.000Z

    The purpose of lessons learned is to identify insight gained during a project – successes or failures – that can be applied on future projects. Lessons learned can contribute to the overall success of a project by building on approaches that have worked well and avoiding previous mistakes. Below are examples of lessons learned during ERDF’s ARRA-funded expansion project.

  11. LESSONS LEARNED AND BEST PRACTICES PROGRAM MANUAL

    E-Print Network [OSTI]

    LESSONS LEARNED AND BEST PRACTICES PROGRAM MANUAL LBNL/PUB-5519 (4), Rev. 1 Approved by: _James (4), Rev. 1 Page 2 of 15 Lessons Learned and Best Practices Program Manual RECORD OF REVISION........................................................................................ 15 #12;LBNL/PUB-5519 (4), Rev. 1 Page 4 of 15 Lessons Learned and Best Practices Program Manual 1

  12. WestVirginiaUniversity SHRM Learning System

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    of your tuition, you will receive the internationally recognized SHRM Learning System® which includesWestVirginiaUniversity ENROLL NOW SHRM Learning System Registration cost is $1,295 Early bird SHRM LEARNING SYSTEM COURSE Fall 2012 SHRM ESSENTIALS OF HR MANAGEMENT Spring 2013 Martina Bison

  13. Online learning processes artificial neural networks

    E-Print Network [OSTI]

    Heskes, Tom

    On­line learning processes in artificial neural networks Tom M. Heskes Bert Kappen Department, The Netherlands. Abstract We study on­line learning processes in artificial neural networks from a general point. Elsevier, pages 199-- 233. #12; On­line learning processes in artificial neural networks 1 1 Introduction 1

  14. Active Learning of Group-Structured Environments

    E-Print Network [OSTI]

    Szepesvari, Csaba

    Active Learning of Group-Structured Environments G´abor Bart´ok, Csaba Szepesv´ari , Sandra Zilles with their environment. We investigate learning environments that have a group structure. We introduce a learning model an environment from partial information is far from trivial. However, positive results for special subclasses

  15. Neural Plasticity of Development and Learning

    E-Print Network [OSTI]

    Gabrieli, John

    Neural Plasticity of Development and Learning Galvan, 2010 Presented by Kristen Morin and Sunil Patel I. Defining Development and Learning II. Neural Plasticity III. Progressive and Regressive Changes with Learning IV. Plasticity of Developmental Timing V. Neural Mechanism- Same or Different? VI. Methodological

  16. Title of Document | 1 UC Learning Center

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Title of Document | 1 UC Learning Center Table of Contents Introduction to the UC Learning Center.....................................................................................Error! Bookmark not defined. Managing Self-Reported Training ......................................................................................................................................19 #12;Title of Document | 2 Last updated 6/30/10 Introduction to the UC Learning Center The UC

  17. Machine learning onMachine learning onMachine learning onMachine learning on accelerator simulation dataaccelerator simulation data

    E-Print Network [OSTI]

    · Plasma acceleration: ­ LWFA: compact source of high-energy Energy 6MeV 32009 DOE Computer Graphics Forum to acceleration, given space and energy variables. · Goal: use machine learning to automate detection of compact (highest energy) group of particles in simulations; · Material: millions of particles in plasma under

  18. Field observations and lessons learned

    SciTech Connect (OSTI)

    Nielsen, Joh B [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    This presentation outlines observations and lessons learned from the Megaports program. It provides: (1) details of field and technical observations collected during LANL field activities at ports around the world and details of observations collected during radiation detections system testing at Los Alamos National Laboratory; (2) provides suggestions for improvement and efficiency; and (3) discusses possible program execution changes for more effective operations.

  19. A vision for reinforcement learning

    E-Print Network [OSTI]

    Wang, Deli

    of California, San Diego August 21, 2011 1 / 29 #12;What is the goal of maintenance? Preventive maintenanceA vision for reinforcement learning and predictive maintenance Charles Elkan University. Intrinsically probabilistic: Reduce expected later cost. From reactive maintenance to proactive maintenance

  20. Feudal Reinforcement Learning Peter Dayan

    E-Print Network [OSTI]

    Dayan, Peter

    Feudal Reinforcement Learning Peter Dayan CNL The Salk Institute PO Box 85800 San Diego CA 92186-grid division of the space in which the agent moves, and section 4 draws some conclusions. 2 FEUDAL CONTROL We sought to build a system that mirrored the hierarchical aspects of a feudal fief- dom, since this is one

  1. School of Education Open Learning

    E-Print Network [OSTI]

    Paxton, Anthony T.

    learning partnerships with a wide range of community organisations.' The award was presented by the Vice should make a written submission of no more than 300 words detailing how the award would enable them Northern Ireland Tel: (028) 9097 3323/3539 Email: openlearning.education@qub.ac.uk Web: www

  2. Higher Education Learning Agreement form

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    /year] ................ till [month/year] ............... Table A: Study programme abroad Web link to the course catalogue at the receiving institution describing the learning outcomes: [Web link(s) to be provided.] Table B: Group: [Please, specify or provide a web link to the relevant information.] Language competence of the student

  3. Hans Gruber (Professional Learning), Regina H. Mulder (Vocational Education and Training, Learning in Organisations), Klaus-Peter Wild (Higher Education, Web-Based Learning), Silke

    E-Print Network [OSTI]

    Schubart, Christoph

    on learning and professional development", Room: 140). Identifying types of informal learners: A latent classHans Gruber (Professional Learning), Regina H. Mulder (Vocational Education and Training, Learning in Organisations), Klaus-Peter Wild (Higher Education, Web-Based Learning), Silke Schworm (Learning with Visual

  4. Learning in Complex Systems Spring Semester, 2011 Lecture Notes Prof. Nahum Shimkin

    E-Print Network [OSTI]

    Shimkin, Nahum

    routing ­ robot juggling Types of learning: ­ Supervised ­ Unsupervised ­ Reinforcement Learning 1 #12Learning in Complex Systems Spring Semester, 2011 Lecture Notes Prof. Nahum Shimkin 1 Introduction problems. Reinforcement Learning ­ what is it? ­ Learning from experience. ­ Learning to act optimally

  5. Lessons learned from RTG programs

    SciTech Connect (OSTI)

    Reinstrom, R.M.; Cockfield, R.D. [Lockheed Martin Missiles and Space, P.O. Box 8555, Philadelphia, Pennsylvania 19101 (United States)

    1998-01-01T23:59:59.000Z

    During the Cassini Radioisotope Thermoelectric Generator (RTG) program, the heritage RTG design was reviewed and modified to incorporate lessons learned. Design changes were made both to resolve problems as they occurred and to correct difficulties noted in earlier missions. Topics addressed in this paper included problems experienced previously at the launch facility in attaching the pressure relief device to the generators, and the open circuit conditions that occurred at times in the resistance temperature device wiring harness. Also discussed is a problem caused by mistakes in software configuration management. How lessons learned refined the RTG design and integration with the spacecraft are discussed and the adopted solutions are described. {copyright} {ital 1998 Lockheed Martin Missles and Space, reproduced with permission.}

  6. System safety management lessons learned

    SciTech Connect (OSTI)

    Piatt, J.A.

    1989-05-01T23:59:59.000Z

    The Assistant Secretary of the Army for Research, Development and Acquisition directed the Army Safety Center to provide an audit of the causes of accidents and safety of use restrictions on recently fielded systems by tracking residual hazards back through the acquisition process. The objective was to develop ''lessons learned'' that could be applied to the acquisition process to minimize mishaps in fielded systems. System safety management lessons learned are defined as Army practices or policies, derived from past successes and failures, that are expected to be effective in eliminating or reducing specific systemic causes of residual hazards. They are broadly applicable and supportive of the Army structure and acquisition objectives. 29 refs., 7 figs.

  7. Neural-Symbolic Learning Systems

    E-Print Network [OSTI]

    van der Torre, Leon

    and semi-linear neurons such that N computesTp r1 : A (B C D) r2 : A (E F) r3 : B #12;Logic Programs #12;Why Neurons and Symbols · To study the statistical nature of learning and the logical nature Programming A B !A !B W WW !1 h1 !2 h2 !3 h3 B FEDC WWW -WW Interpretations For each propositional general

  8. Learning in a Studio Mode, Spotlighting Teamwork and

    E-Print Network [OSTI]

    Lin, Xi

    students supported by one instructor, 2 TF's, and 2 LA's" Focus on teamwork & active engagement" Learning student-centered active learning. 3/7/14Learning in a Studio Mode Why do Studio? Better learning overall Students like it better #12;3 Class design: Lecture 3/7/14Learning in a Studio Mode Lecture

  9. Transformative Learning Purple Paper Truman State University Summer 2011

    E-Print Network [OSTI]

    Gering, Jon C.

    of reflection and critical thinking. Transformative learning, however, focuses specifically on critical self learning involves deep learning but not all deep learning results in transformation. Given that the focus into student participation in transformative learning. Truman Portfolio Results Summary: 86% of gradua

  10. EUROGRAPHICS 2008 Education Papers Computer Graphics: Problem Based Learning and

    E-Print Network [OSTI]

    Baldassarri, Sandra

    Abstract This paper focuses on the use of new tools in order to improve the learning of Computer Graphics. By combining these ideas, we obtain an interactive learning environment created to improve student's learning at the birth of an interactive learning environment created to improve student's learning capabilities. The use

  11. STUDENT LEARNING COMMONS Annual Report 2007/08

    E-Print Network [OSTI]

    and support students in their academic pursuits, with a focus on providing writing and learning supportSTUDENT LEARNING COMMONS Annual Report 2007/08 Elaine Fairey, Director, Student Learning Commons ______________________________________________________________________________________ Introduction The Student Learning Commons (SLC) is an academic learning centre with the mandate to assist

  12. MOTOR SCHEMAS IN ROBOT LEARNING Lynne E. Parker

    E-Print Network [OSTI]

    Parker, Lynne E.

    allows robot learning to scale to more complex robots or tasks, thus making practical applicationsMOTOR SCHEMAS IN ROBOT LEARNING Lynne E. Parker Department of Electrical Engineering and Computer in robot learning; Macro actions in robot learning; Basis behaviors for robot learning. Definition Motor

  13. Using learning decomposition to analyze student fluency development

    E-Print Network [OSTI]

    Mostow, Jack

    introduces an approach called learning decomposition to analyze what types of practice are most effective TO LEARNING CURVES AND LEARNING DECOMPOSITION The goal of this paper is to investigate how different types learning curves to measure the relative impact of various types of learning events. For tracking student

  14. DESIGNING LEARNING ACTIVITY TO BE INDIVIDUALIZED Sofiane AOUAG

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    types of knowledge and models. The multi-modelling of the learning activity imply specifying for modelsDESIGNING LEARNING ACTIVITY TO BE INDIVIDUALIZED Sofiane AOUAG Laboratoire de Recherche sur le, learning object, multimodeling, activity theory, individualized learning, learning to read, Agent. Abstract

  15. Service-Learning This handbook is also found at

    E-Print Network [OSTI]

    Baltisberger, Jay H.

    -Learning? 3 · How is service-learning different? 5 · Ten Principles of Good Practice in Service-Learning 6 How Webpage The CELTS website contains information about service and service-learning programs, as well are designated service-learning courses; these courses are indicated in the Schedule of Classes. Completing

  16. A Case Study of the Applied Learning Academy: Reconceptualized Quantum Design of Applied Learning

    E-Print Network [OSTI]

    Gordon, Denise

    2010-07-14T23:59:59.000Z

    in an effort to make learning experiences relevant to students? daily lives. Revisiting John Dewey?s philosophy from the progressive movement, project-based, service learning, community partnerships, and portfolio assessment helped to create the applied...

  17. Learning Goals for Major in Environmental Sciences Undergraduate Student Learning Initiative / University of California, Berkeley

    E-Print Network [OSTI]

    Wildermuth, Mary C

    Learning Goals for Major in Environmental Sciences Undergraduate Student Learning Initiative / University of California, Berkeley Environmental Sciences (ES) is an interdisciplinary enterprise that deals, statistics, behavioral science, policy, economics, and law. Environmental Sciences provides a rigorous

  18. A Case Study of the Applied Learning Academy: Reconceptualized Quantum Design of Applied Learning 

    E-Print Network [OSTI]

    Gordon, Denise

    2010-07-14T23:59:59.000Z

    in an effort to make learning experiences relevant to students? daily lives. Revisiting John Dewey?s philosophy from the progressive movement, project-based, service learning, community partnerships, and portfolio assessment helped to create the applied...

  19. The relationship between small learning communities

    E-Print Network [OSTI]

    Turnbo, Bobbie Jo

    2009-05-15T23:59:59.000Z

    /vocational pathways. In the 1970s, schools progressed toward developing magnet programs, career academies, and mini-schools (Oxley, 2006). Charter schools became part of the high school evolution in the 1980s - 1990s, and are still strong advocates for small... traditional campus. Small Learning Communities Models and Strategies Sammon (2000) describes small learning communities by clustering them into six main models: career academies, houses, small learning community (SLC)/school- within-school, magnet schools...

  20. Motion perceptual learning: When only task-relevant information is learned

    E-Print Network [OSTI]

    Tjan, Bosco

    as a result of experience and practice. Gibson further argued for active learning: BWe do not just see, we

  1. Prediction of Asphalt Mixture Compactability from Mixture, Asphalt, and Aggregate Properties

    E-Print Network [OSTI]

    Muras, Andrew J.

    2010-07-14T23:59:59.000Z

    . Predicted Plot of CV Neural Net of Entire Data Set for a ............................ 50 Figure 32. Predicted Plot of CV Neural Net of Entire Data Set for AV Nini ................... 51 Figure 33. a versus Predicted a... ................................................... 24 Table 5 HMA Mixing and Compaction Temperatures ............................................. 27 Table 6 Compaction Parameters a, c, and AV Nini ................................................... 38 Table 7 Compaction Parameters m1, m2...

  2. Effect of viscosity of asphalt on stress strain and volume change characteristics of asphaltic mixtures

    E-Print Network [OSTI]

    Gandhi, Poduru Mohandas Karamchand

    1966-01-01T23:59:59.000Z

    Raages for Cannonading Vacuum Capillary Viscometers Viscosities at 140 F and 275 F Using Capillary V iscaaetar Rxpaasion of Triaxial Cell Mith Time At Various pressures 10 Typical Triaxial Test Data 11 Typical Triaxial Test Data 12 Typical... and the top loading cap was placed in position. 2. The circumferential surfaces of base plate and loading cap mre covered with high vacuum silicone grease. 3, The rubber membrane suitable for four inch diameter samples was placed over the speciamn using a...

  3. Learning Curve - DOE Directives, Delegations, and Requirements

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    This chapter discusses the development and application of the learning curve. g4301-1chp21.pdf -- PDF Document, 28 KB Writer: John Makepeace Subjects: Administration Management...

  4. Lessons Learned Quarterly Report, September 1999

    Broader source: Energy.gov [DOE]

    Welcome to the 20th Quarterly Report on lessons learned in the NEPA process. This issue includes a cumulative index for the past five years.

  5. Immersive Learning Environments for Teaching Software Engineering

    E-Print Network [OSTI]

    Cooper, R.; Cutts, Q.; Wang, C.; Proceedings of the Third Workshiop on Teaching, Learning and Assessment of Database Systems [More Details

    Cooper,R. Cutts,Q. Wang,C. Proceedings of the Third Workshiop on Teaching, Learning and Assessment of Database Systems

  6. Safe Feature Elimination in Sparse Supervised Learning

    E-Print Network [OSTI]

    2010-09-17T23:59:59.000Z

    Sep 17, 2010 ... learning problems involving a convex loss function and a l1-norm penalty ... substantial reduction in the number of variables prior to running the ...

  7. Lessons Learned Quarterly Report, June 2003

    Broader source: Energy.gov [DOE]

    Welcome to the 35th quarterly report on lessons learned in the NEPA process. We are pleased to include in this issue three new mini-guidance articles.

  8. Regulation with anticipated learning about environmental damages

    E-Print Network [OSTI]

    Karp, L; Zhang, J

    2006-01-01T23:59:59.000Z

    abatement costs and environmental damages, and a generalemissions. 2.2 Environmental damages and learning Let S t begas stocks and environmental damages. In some respects these

  9. Story-based Learning: The Impact of Narrative on Learning Experiences and Outcomes

    E-Print Network [OSTI]

    Young, R. Michael

    that students do exhibit learning gains, that those gains are less than those produced by traditional the promise of adaptive, motivating learning experiences to students. NLEs are currently under investigation focused on developing AI-based approaches that provide rich, adaptive narrative-based learning experiences

  10. Assessing Student Learning: Overview Page 1 AssessingStudentLearning:Overview

    E-Print Network [OSTI]

    Dyer, Bill

    are focusing more on what the students have learned (somewhere), rather than on what is covered Assessing Student Learning: Overview Page 1 AssessingStudentLearning:Overview September 12. The primary assessment of degree programs for accreditation purposes is focused on verifying that students

  11. A study of learning performance of e-learning materials design with knowledge maps

    E-Print Network [OSTI]

    Ouhyoung, Ming

    Information Security Project ING Information Security Project Microsoft e-learning Materials Project Microsoft e-learning Materials Project Knowledge MapsKnowledge Maps 66 Materials and Methods for Information-based e-learning materials 1616 Conclusion · Research topics elicited from projects. · Extended

  12. An Algorithm to Learn Read-Once Threshold Formulas, and some Generic Transformations between Learning Models

    E-Print Network [OSTI]

    Eckmiller, Rolf

    An Algorithm to Learn Read-Once Threshold Formulas, and some Generic Transformations between. Hancocky Siemens Corporate Research, Inc. 755 College Road East Princeton, NJ 08540 e-mail: hancock@learning.scr.siemens of generic transformations that can be used to convert an algorithm in one learning model into an algorithm

  13. Stage I Results Social Learning Strategies Tournament Social Learning Strategies Tournament

    E-Print Network [OSTI]

    Stage I Results Social Learning Strategies Tournament 1 Social Learning Strategies Tournament This document provides a report on the first stage of analysis of submitted entries to the social learning, and the results for those strategies that did not progress to Stage II. Stage I details The simulations each

  14. MACHINE LEARNING 1 Below are errata for the first and second printings of Machine Learning,

    E-Print Network [OSTI]

    Mitchell, Tom

    1 MACHINE LEARNING 1 Below are errata for the first and second printings of Machine Learning, Tom M Domingos, Olac Fuentes, Haym Hirsh, Ray Mooney, James Reggia, Roni Rosen­ feld, Stephen Scott, Nikunj Oza created for McGraw­Hill by Tom Mitchell JAN. 5, 1999 #12; 2 2 MACHINE LEARNING ... we expect h 0

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    E-Print Network [OSTI]

    Reber, Paul J.

    Memory Systems in Sequence Learning · Many sequence learning studies have discordant results on the effect explicit sequence knowledge has on the learning and expression of motor sequences. Motor Skill Expertise · Motor skill expertise utilizes both the explicit declarative knowledge of the sequence

  16. Operationalization of Learning Scenarios on Open and Distance Learning platforms: the case of the Moodle Platform

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    Laforcade, Pierre

    Operationalization of Learning Scenarios on Open and Distance Learning platforms: the case of the Moodle Platform Aymen Abedmouleh, Lahcen Oubahssi, Pierre Laforcade and Christophe Choquet Université du of scenarios on learning platforms. We propose an approach based on the explicitation and the formalization

  17. 2009 IEEE 8TH INTERNATIONAL CONFERENCE ON DEVELOPMENT AND LEARNING 1 Learning to Make Facial Expressions

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    Zhou, Yuanyuan

    on the external physical and social world [3]. Here we apply this same idea to the problem of a robot learning production by a robotic head with 31 degrees of freedom. Facial motor parameters were learned using feedback illuminate the computational study of how infants learn to make facial expressions. I. INTRODUCTION The human

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    McLoughlin, Padraig

    -Based Learning: An Educational Reform Based Upon Content-Centred Teaching. 1046-Centred Educational Reform 3 III Inquiry-Based Learning Pedagogy is Content 27 #12; ii Abstract Inquiry-Based Learning: An Educational Reform

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    Learning from Monitoring & Evaluation ­ a blueprint for an adaptive organisation Learning from Monitoring & Evaluation ­ a blueprint for an adaptive organisation Jake Morris and Anna Lawrence Social & Economic Research Group, Forest Research Aim and structure Learning is an essential characteristic

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    Spatial Generalization in Operant Learning: Lessons from Professional Basketball Tal Neiman1: Neiman T, Loewenstein Y (2014) Spatial Generalization in Operant Learning: Lessons from Professional, Israel Abstract In operant learning, behaviors are reinforced or inhibited in response