Relevant bibliographies by topics / Performance related materials

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Performance related materials'

Author: Grafiati
Published: 19 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Performance related materials.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Performance related materials"

1

García-Calvo, J. L., M. Sánchez, L. Fernández-Luco, and M. C. Alonso. "Shrinkage behaviour and related corrosion performance of low-pH cementitious materials based on OPC or CAC." Materiales de Construcción 66, no. 321 (February 4, 2016): e079. http://dx.doi.org/10.3989/mc.2016.02615.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Maimoni, Arturo. "Aluminum-Air Batteries: Materials Related Research." MRS Bulletin 11, no. 4 (August 1986): 19–22. http://dx.doi.org/10.1557/s0883769400069128.

Full text
Abstract:
Abstract:The aluminum-air power cell is being developed as a power supply for general purpose electric vehicles because it can provide them with the range, acceleration performance, and rapid refueling capability of current internal combustion engine vehicles. This paper describes the general characteristics of the systems and the materials research effort sponsored by DOE to improve the characteristics of the air and aluminum electrodes.
APA, Harvard, Vancouver, ISO, and other styles
3

Savadogo, Oumarou. "On the materials issues for pefc applications." Chemical Industry 58, no. 6 (2004): 286–94. http://dx.doi.org/10.2298/hemind0406286s.

Full text
Abstract:
Current limitations related to the development of effective, durable and reliable MEA components for PEFC applications are addressed. Advancements made in the development of materials (catalysts, high temperature membranes, bipolar plates, etc.) for PEFC are shown. The effect of the catalyst on PEFC performances based on cells fed by hydrogen, direct methanol, direct propane, or direct acetal fuels are presented. The progress in cell performance and cathode research are discussed. Perspectives related to CO tolerance anodes are indicated. The effect of the membranes on the cell performance are shown and parameters which may help the development of appropriate membranes depending on the fuel are suggested. Openings for the future in materials processing and development for PEFC mass production are discussed. The development of New Materials is the key factor to meet those requirements. The aim of this paper is to present challenges related to the development of new materials for PEFC applications and perspectives related to components cost issues are discussed.
APA, Harvard, Vancouver, ISO, and other styles
4

McDowell, David L., Hae Jin Choi, Jitesh Panchal, Ryan Austin, Janet Allen, and Farrokh Mistree. "Plasticity-Related Microstructure-Property Relations for Materials Design." Key Engineering Materials 340-341 (June 2007): 21–30. http://dx.doi.org/10.4028/www.scientific.net/kem.340-341.21.

Full text
Abstract:
Design has traditionally involved selecting a suitable material for a given application. A materials design revolution is underway in which the classical materials selection approach is replaced by design of material microstructure or mesostructure to achieve certain performance requirements such as density, strength, ductility, conductivity, and so on. Often these multiple performance requirements are in conflict in terms of their demands on microstructure. Computational plasticity models play a key role in evaluating structure-property relations necessary to support simulation-based design of heterogeneous, multifunctional metals and alloys. We consider issues related to systems design of several classes of heterogeneous material systems that is robust against various sources of uncertainty. Randomness of microstructure is one such source, as is model idealization error and uncertainty of model parameters. An example is given for design of a four-phase reactive powder metal-metal oxide mixture for initiation of exothermic reactions under shock wave loading. Material attributes (e.g. volume fraction of phases) are designed to be robust against uncertainty due to random variation of microstructure. We close with some challenges to modeling of plasticity in support of design of deformation and damage-resistant microstructures.
APA, Harvard, Vancouver, ISO, and other styles
5

Woo, Yun. "Transparent Conductive Electrodes Based on Graphene-Related Materials." Micromachines 10, no. 1 (December 26, 2018): 13. http://dx.doi.org/10.3390/mi10010013.

Full text
Abstract:
Transparent conducting electrodes (TCEs) are the most important key component in photovoltaic and display technology. In particular, graphene has been considered as a viable substitute for indium tin oxide (ITO) due to its optical transparency, excellent electrical conductivity, and chemical stability. The outstanding mechanical strength of graphene also provides an opportunity to apply it as a flexible electrode in wearable electronic devices. At the early stage of the development, TCE films that were produced only with graphene or graphene oxide (GO) were mainly reported. However, since then, the hybrid structure of graphene or GO mixed with other TCE materials has been investigated to further improve TCE performance by complementing the shortcomings of each material. This review provides a summary of the fabrication technology and the performance of various TCE films prepared with graphene-related materials, including graphene that is grown by chemical vapor deposition (CVD) and GO or reduced GO (rGO) dispersed solution and their composite with other TCE materials, such as carbon nanotubes, metal nanowires, and other conductive organic/inorganic material. Finally, several representative applications of the graphene-based TCE films are introduced, including solar cells, organic light-emitting diodes (OLEDs), and electrochromic devices.
APA, Harvard, Vancouver, ISO, and other styles
6

Saeed, Athar, Reza Ashtiani, Richard L. Boudreau, T. Edil, and S. W. Dean. "Performance Related Tests on Recycled Materials for Sustainable Design of Pavement Systems." Journal of ASTM International 8, no. 7 (2011): 103655. http://dx.doi.org/10.1520/jai103655.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wang, Hongkang, Ruifeng Qian, Yonghong Cheng, Hong-Hui Wu, Xianwen Wu, Kunming Pan, and Qiaobao Zhang. "Micro/nanostructured TiNb2O7-related electrode materials for high-performance electrochemical energy storage: recent advances and future prospects." Journal of Materials Chemistry A 8, no. 36 (2020): 18425–63. http://dx.doi.org/10.1039/d0ta04209a.

Full text
Abstract:
This Review summarized the latest progress in structural engineering, material fabrication and enhancement of the electrochemical performances of micro/nanostructured TiNb2O7 and its analogues for high-performance energy storage systems.
APA, Harvard, Vancouver, ISO, and other styles
8

Bak, Tadeusz, Janusz Nowotny, and Quang Vinh Nguyen. "Titanium Dioxide Photocatalysts: Performance Related Properties." Solid State Phenomena 162 (June 2010): 329–35. http://dx.doi.org/10.4028/www.scientific.net/ssp.162.329.

Full text
Abstract:
The present work considers the performance-related properties of TiO2-based photosensitive semiconductors as photocatalysts for water purification and photoelectrodes for water splitting. These properties, including electronic structure, charge transport, surface properties, and near-tosurface properties, have an effect on light absorption and its conversion into chemical energy, and are closely related to defect disorder. Therefore, defect chemistry may be used as a framework for their modification in order to achieve enhanced performance. The present work considers the relationships between these specific performance-related properties and defect disorder.
APA, Harvard, Vancouver, ISO, and other styles
9

Caccese, Michael S., Clair Pagnano, Eden Rohrer, and Xiomara Corral. "FINRA issues interpretive guidance on related performance in institutional communications." Journal of Investment Compliance 18, no. 4 (November 6, 2017): 36–39. http://dx.doi.org/10.1108/joic-08-2017-0058.

Full text
Abstract:
Purpose To analyze the June 9, 2017 Financial Industry Regulatory Authority, Inc. (“FINRA”) interpretive letter permitting the use of Related Performance Information in continuously offered closed-end registered investment company sales materials distributed solely to institutional investors. Design/methodology/approach Provides background, including the application of FINRA Rule 2210, and explains the conditions under which fund marketing materials may contain Related Performance Information. Findings While the interpretive letter will not result in a fundamental shift in the Industry’s approach to providing Related Performance Information of open- and closed-end funds to institutional investors, it also represents FINRA’s ongoing recognition that communications provided solely to institutional investors do not raise the same investor protection concerns as communications provided to retail investors. Originality/value Expert guidance from experienced investment management and investment fund lawyers.
APA, Harvard, Vancouver, ISO, and other styles
10

Gedafa, Daba S., Mustaque Hossain, Lon S. Ingram, and Rick Kreider. "Performance-Related Specifications for PCC Pavements in Kansas." Journal of Materials in Civil Engineering 24, no. 4 (April 2012): 479–87. http://dx.doi.org/10.1061/(asce)mt.1943-5533.0000405.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Performance related materials"

1

Fichtner, Frauke. "Identification and Variation of some Functionality Related Characteristics of Pharmaceutically Relevant Solid Materials and their Effect on Product Performance." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7462.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Milne, Terence Ian. "Towards a performance related seal design method for Bitumen and modified road seal binders." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/856.

Full text
Abstract:
Thesis(PhD (Civil Engineering))-- University of Stellenbosch, 2004.
ENGLISH ABSTRACT: Bitumen based road surfacing seals and asphalt wearing courses have been used by society's Engineers "to counter the damage to the existing unsurfaced roadways by the newly developed automobile with its rubber driving wheels" since the early 1900's. Early experiments were conducted with both tar and bitumen to find a suitable material to alleviate the situation, and ongoing research has been carried out through the past century and into the new millennium, throughout the world, examining improvements, from materials used, to design and construction methods. However, there is still much to be understood, improved and refined, when considering road surfacing seal design. Pavement designers have the choice of utilizing either an asphalt (graded aggregate remanufactured with a bitumen binder and applied as a complete product) or a surfacing seal (including variations of bitumen binder sprayed onto the road surface, with the addition of single size stones, either in one or two layers of binder and aggregate, i.e. single or double seals) as a pavement wearing course. Current road surfacing seal design practice depends on empirical analysis and experience, being primarily a volumetric based assessment of bitumen application. This research project assesses South African seal design philosophy, investigates design areas where review or updating is required to accommodate changing bitumen sources and types, and traffic loading. Seal performance criteria are examined, with the development of a matrix of influences on seal performance. Using this, the need for a seal design method based on mechanistic material properties is proposed, and the prototype example of such a numerical model using finite element method is presented. To contribute further towards a performance related seal design method, the feasibility of modelling of road surfacing seals using mechanistic principles was examined. The potential of developing failure and fatigue criteria or relationships to enable assessment of the expected seal performance, with inclusion of different component material characteristics and variations, varying traffic and environmental conditions, was also examined. From assessment of literature, and understanding of the components of the seal, pavement, and influencing factors, a choice of numerical model of seal performance was made. The Finite Element Method (FEM) Analysis was selected for the purpose of modelling seal performance. The model was developed to enable examination of the interaction of individual seal components (i.e. stone and bitumen), at micro-mechanic scale. The prototype 3-dimensional numerical seal model was undertaken in 2002 and 2003 at Technical University Delft, using the CAPA research program. On the basis of the linear calculations the developed numerical prototype model is able to provide insight into seal behaviour and distinction between mechanical (seal geometry) and chemical (components) seal aspects, and insight into stress and strain development in the different seal types. Simulations of different seal, environmental and traffic scenarios are provided to demonstrate the potential of the model (excluding seal aggregate interlock and embedment effects at prototype stage). In order to provide data for the verification of the prototype numerical model, and to further contribute to the development of a performance related seal design method, performance tests were developed, with a new tool for assessment of comparative seal performance using the Model Mobile Load Simulator Accelerated Pavement Testing apparatus. The performance of each different seal binder type - Penetration grade Mumen, SBS, SBR, EVA and Bitumen Rubber - was undertaken. A methodology for the assessment of in-service seal performance was developed, and the performance of the respective seals reported. The results of this examination showed that each binder type has its unique contribution to seal performance. These new performance tests will be able to assist designers in the added determination of the fundamental binder properties on seal performance, and the seals' ability to contribute to the overall performance of the pavement. An additional comparative performance test method was developed to enable assessment of the effect of ageing and moisture, to complement the MMLS results. In summary, the performance testing has assisted in identifying the critical parameters a seal designer should consider during the design process. From this research, it is evident that the current seal design method requires further development to able designers to predict the effect of: Varying axle loads, tyre pressures and design speed; Varying characteristics of the different binders, (i.e. temperature - viscosity relationships, adhesion and visco-elastic behaviour); on the performance of seals. The major areas for suggested improvement in current seal design methods towards a performance based design method are: inclusion of variable traffic load and environmental characteristics, including temperature and moisture influences, and inclusion of mechanistic material characteristics into the design methodology.
AFRIKAANSE OPSOMMING: Bitumengebaseerde padoppervlakseellae en asfaltslytlae is sedert die 1900's deur ingenieurs gebruik as teenwig teen die skade wat die pas ontwikkelde voertuig met sy rubberwiele aan bestaande ryvlakke sonder oppervlakbehandeling aangerig het. In vroeëre eksperimente wat daarop gemik was om 'n geskikte materiaal te vind om die probleem teen te werk, is 'n kombinasie van teer en bitumen gebruik. Sedertdien word voortgesette navorsing steeds wêreldwyd gedoen om verbeterings te ondersoek, nie net ten opsigte van materiale nie maar ook ontwerp- en konstruksiemetodes. Wat die ontwerp van padoppervlakseëling betref is daar egter heelwat wat reg begryp, verbeter en verfyn moet word. Plaveiselontwerpers het die keuse om of 'n asfalt te gebruik (gegradeerde aggregaat voorafvervaardig met 'n bitumen bindmiddel en aangewend as 'n klaarproduk), of 'n oppervlakseël (een laag of twee lae [m.a.w. enkel- of dubbelseël] bitumen bindmiddel met aggregaat [enkelgrootte klippies] bygevoeg, gespuit op die padoppervlak). In die praktyk berus die ontwerp van padoppervlakseëling tans op empiriese analise en ervaring (wat hoofsaaklik 'n volumetriesgebaseerde assessering van die aanwending van bitumen is). Hierdie navorsingsprojek doen 'n waardebepaling van die Suid-Afrikaanse filosofie van seëlontwerp, en ondersoek ontwerpterreine wat hersiening of bywerking benodig om vir veranderende bitumenbronne en -tipes, asook verkeerslading, voorsiening te maak. Met die ontwikkeling van 'n matriks van die invloede op seëlprestasie is die kriteria vir seëlprestasie ondersoek. Op grond daarvan word aangevoer dat daar 'n behoefte is aan 'n seëlontwerpmetode gebaseer op die meganistiese eienskappe van materiaal, en word 'n voorbeeld van 'n numeriese modelprototipe wat die eindige-element-metode gebruik, voorgelê. Ten einde 'n verdere bydrae te lewer tot die ontwikkeling van 'n prestasiegerigte seëlontwerpmetode, is die uitvoerbaarheid van die modellering van padoppervlakseëllae gebaseer op meganistiese beginsels, ondersoek. Daar is ook ondersoek ingestel na die potensiaal vir die ontwikkeling van kriteria vir die vasstel van mislukking en vermoeidheid of verhoudinge wat die assessering van die verwagte seëlprestasie (ingesluit die verskillende kenmerke en variasies van seëlkomponentmateriaal en wisselende verkeers- en omgewingsomstandighede) moontlik kan maak. Met oorweging van die bestudeerde literatuur en 'n begrip van die komponente van seël, plaveisel en inwerkende faktore, is 'n keuse van 'n numeriese model vir seëlprestasie gemaak. Die eindige-element-metode (Finite Element Method [FEM]) is gekies as die analitiese metode vir die modellering van seëlprestasie. Die model is ontwikkel om die ondersoek van die interaksie tussen individuele seëlkomponente (klip en bitumen) op mikromeganiese skaal moontlik te maak. Die ontwikkeling van die driedimensionele, numeriese, model-seëlprototipe is tussen 2002 en 2003 by die Delft Tegniese Universiteit gedoen, met gebruikmaking van die CAPA-navorsingsprogram. Wat lineêre berekenings betref, kan die ontwikkelde numeriese modelprototipe 'n insig gee in seëlgedrag en in die onderskeid tussen aspekte van seëlgeometrie (meganies) en seëlkomponente (chemies), asook in die spanning- en vervormingsontwikkeling van die verskillende tipes seël. Simulasies van verskillende seël-, omgewings- en verkeerscenario's word voorgestel om die potensiaal van die modelprototipe te demonstreer. Met die oog daarop om data vir die verifikasie van die numeriese modelprototipe te voorsien, en om verder tot die ontwikkeling van 'n prestasiegerigte seëlontwerpmetode by te dra, is prestasietoetse, met 'n nuwe instrument vir die assessering van vergelykende seëlprestasie met behulp van die Model Mobile Load Simulator Accelerated Pavement Testing apparaat, ontwikkel. Die prestasie van elke verskillende tipe seëlbindmiddel- penetrasiegraad bitumen, SBS, SBR, EVA en bitumenrubber - is getoets. 'n Metodologie vir die assessering van die ingebruiksprestasie van seëllae is ontwikkel, en daar is verslag gedoen oor die prestasie van die verskillende seëllae. Die resultate van die ondersoek het getoon dat elke tipe bindmiddel 'n eie unieke bydrae tot die prestasie van die seël lewer. Die nuwe prestasietoets sal ontwerpers help met die bepaling van die grondliggende bindmiddeleienskappe wat by seëlprestasie ter sprake is, asook van die seël se vermoë om tot die algehele prestasie van die plaveisel by te dra. 'n Bykomende prestasievergelykingstoetsmetode vir die assessering van die effek van veroudering en vogtigheid is ontwikkel om die MMLS-resultate aan te vul. Ter opsomming, die prestasietoetsing het bygedra tot die identifisering van die kritiese parameters wat die seëlontwerper tydens die ontwerpproses in gedagte behoort te hou. Die navorsing wat gedoen is, dui daarop dat die huidige seëlontwerpmetode verder ontwikkel moet word om ontwerpers in staat te stel om die effek van die volgende te kan voorspel: Wisselende aslas, banddruk en ontwerpspoed; Verskillende kenmerke van die verskillende bindmiddels (bv. temperatuur viskositeitsverhoudinge, vashegting en viskoëlastiese gedrag). Wat huidige seëlontwerpmetodes betref, is die hoofterreine waarop 'n verbetering voorgestel word, die insluiting van veranderlike verkeerslas- en omgewingskenmerke, ingesluit die invloed van temperatuur en vogtigheid, en insluiting van meganistiese kenmerke van materiaal in die ontwerpmetodologie.
APA, Harvard, Vancouver, ISO, and other styles
3

Jagtap, Pranav. "A Pre-Assessment related to Refractory Waste Management in Sweden : Pre-study of the performance of MgO-C bricks made from recycled MgO-C refractory materials for use in steel production." Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298064.

Full text
Abstract:
Steel industries consume refractory materials on a large scale. High temperature resistant refractory materials are essential for linings of the steelmaking vessels, to protect them from corrosive environments, high temperatures, molten steels and slags during transportation and steelmaking operations. Furthermore, with the increasing demand in steel production the usage of refractory materials has substantially increased, resulting in an increasing demand for refractory raw materials. However, with the hike in prices and abundancy for raw materials there is a need for recycling and reusing of spent refractory materials, which are otherwise sent to landfill. Nowadays the environmental as well as economic aspect regarding the recycling of spent refractories are of interest for the steel industries for achieving a solution towards zero waste. Several projects have been launched to investigate and generate new ideas with different ways to recycle refractory materials, but there is much more research and planning that needs to be done in order to find a large scale solution towards achieving zero waste. One of the simplest solutions to avoid landfilling of spent refractory is to introduce and manage a good sorting of the breakout scrap refractory, which can later be recycled or reused depending on their condition. The thesis work was carried out in collaboration of KTH – The Royal Institute of Technology/ Stockholm/ Sweden and Jernkontoret – The Swedish Steelmaking Association / Stockholm / Sweden. The work includes a collection of information regarding the current refractory waste management situation within some of the Swedish steel producers as Ovako AB, Uddeholm AB and SSAB. The information were collected on the basis of their refractory usage and practises. The thesis as well provides some suggestions for recycling and reusing of spent refractory waste materials collected from literature. Additionally some experimental work was carried out on whether an MgO-C refractory brick made of recycled materials can perform similarly against slag as a brick made from virgin materials. Experimental corrosion trials with one industrial slag composition were carried out using a hot-finger test apparatus for bricks with different amounts of recycling content in comparison to a brick made of virgin materials. After experiments, the samples were analysed using a Light Optical Microscope (LOM). A similar performance of all bricks against the slag composition was observed. Additional laboratory tests with different slag compositions, holding times and stirring rates are required to reach more profound conclusions. Industrial trials are essential with bricks containing recycled raw materials to reach a final performance status.
Stålindustrin konsumerar eldfasta material i stor skala. Högtemperatur resistenta eldfasta material är nödvändiga för att fodra skänkugnen, för att skydda den från frätande miljöer, höga temperaturer av smält stål och slagg, samt transport och blandning av smält stål under ståltillverkning. Vidare har användningen av eldfasta material ökat avsevärt med den ökande efterfrågan inom stålproduktion, vilket har resulterat i en ökande efterfrågan på eldfasta råvaror. Men i och med prishöjningen och avhållsamheten för råvaror behövs en idé om återvinning och återanvändning av eldfasta material som annars skickas till deponi. Numera är den miljömässiga och ekonomiska aspekten av återvinning av förbrukade eldfasta ämnen av intresse för stålindustrin för att kunna nå en lösning mot zero waste. Flera projekt har påbörjats för att undersöka och generera nya idéer med olika sätt att återvinna eldfasta material, men det finns mycket mer forskning och planering som behöver göras för att hitta en storskalig lösning mot netto noll avfall. En av de enklaste lösningarna för att undvika deponering av använt eldfast material är att införa och hantera en bra sortering av använt eldfast avfall, som senare kan återvinnas eller återanvändas beroende på dess tillstånd. Avhandlingsarbetet utfördes i samarbete med KTH – Kungliga tekniska högskolan / Stockholm / Sverige och Jernkontoret – Svenska stålföreningen / Stockholm / Sverige. Informationen samlades in angående användning och praxis av eldfasta material. Avhandlingen innehåller också några förslag för återvinning och återanvändning av använt eldfast avfall som samlats in från litteraturen. Dessutom utfördes experiment för huruvida en eldfast infodring av återvunnen MgO-C kan motstå reaktioner mot slagg som en infodring tillverkad av ny utvunna råvaror. Experimentella korrosionsförsök med en industriell slaggkomposition utfördes av en ugn designad för hot finger test för eldfasta material gjorda av olika mängd återvunnet material samt inget återvunnet material alls. Efter experimenten analyserades proverna med ett ljusoptiskt mikroskop (LOM). En liknande prestanda för alla tegelstenar mot slaggkompositionen observerades. Ytterligare laboratorietester med olika slaggkompositioner, hålltider och omrörningshastigheter krävs för att nå en djupare slutsats. Industriella försök är väsentliga med eldfast tegel som innehåller återvunna råvaror för att kunna nå en slutlig prestandastatus.
APA, Harvard, Vancouver, ISO, and other styles
4

Seaman, Shane Thomas. "Material Related Effects on the Structural Thermal Optical Performance of a Thermally Tunable Narrowband Interferometric Spectral Filter." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/90799.

Full text
Abstract:
High Spectral Resolution Lidar (HSRL) is a backscatter lidar technique that employs an optical/spectral filter to distinguish between particulate (Mie) and molecular (Rayleigh) backscattered light. By separating the two types of returns, higher accuracy measurements are possible that will enable improved climate models, air quality measurements, and climate forecasting. A spaceborne HSRL instrument can provide great impact in these areas by enabling near-continuous measurements across the Earth, however the optical filter technology has typically been too complex for reliable long-duration space flight due to the need for complicated and costly electro-optic feedback loops, extra alignment detectors, and additional laser sources. Furthermore, these complexities limit the filter from use in other applications. In this research, a high-performance, ultra-narrowband interferometric optical filter with a specific thermo-optical behavior has been designed and built. The interferometer has been designed such that it can be reliably adjusted/tuned by simply monitoring and adjusting the temperature. The greatly reduced operational complexity was made possible through high-accuracy thermal characterization of the interferometer materials, combined with detailed Structural-Thermal-Optical-Performance (STOP) modeling to capture the complicated interactions between the materials. The overall design process, fabrication procedures, and characterization of the optical filter are presented.
Doctor of Philosophy
LiDAR (an acronym for Light Detection and Ranging) is a technology that can be used to measure properties of the atmosphere. It is similar to radar, but uses much smaller light waves rather than larger radio waves, enabling more detailed information to be obtained. High Spectral Resolution Lidar (HSRL) is a lidar technique that uses a high precision optical filter to distinguish between light that scatters from particulates (such as dust, smoke, or fog) and light that scatters from molecules (such as oxygen, nitrogen, or carbon dioxide) in the atmosphere. By separating the two types of backscattered light, higher accuracy measurements are possible that will enable improvements in climate models, air quality measurements, and climate forecasting. A spaceborne HSRL instrument can provide great impact in these areas by enabling near-continuous measurements across the Earth; however, the optical filter technology has typically been too complex for reliable long-duration spaceflight due to the need for complicated and expensive additional hardware. In this research, a high-performance HSRL optical filter that can be reliably operated by simply monitoring and adjusting the temperature has been designed, built, and tested. The greatly-reduced operational complexity has been made possible through a new process that enables more accurate prediction of the complicated interactions between the materials of the optical filter. This process is based on a combination of high-accuracy characterization of the materials and detailed structural-thermal-optical-performance (STOP) modeling. The overall design process, fabrication procedures, and characterization of the optical filter are presented.
APA, Harvard, Vancouver, ISO, and other styles
5

Shen, Yuan-Chu, and 沈源鉅. "Study of Deep-Ultraviolet Phototransistors and Related Performance Based on Wide Bandgap Materials Grown by MOCVD." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/h8d63x.

Full text
Abstract:
碩士
國立交通大學
電子研究所
107
In this study, a single-crystalline ZnGa2O4 epilayer was successfully grown on c-plane (0001) sapphire substrate by metal-organic chemical vapor deposition (MOCVD). Owing to a wide-band gap (~5.2 eV) possessed in this ternary oxide semiconductor, this material can be applied to deep ultra-violet photodetectors (DUV-PDs). We have successfully studied MSM DUV-PDs based on this thin film, and solved the leakage concern through thermal annealing in furnace. In order to improve the photoelectric characteristics of the DUV-PDs, we altered the MSM structure to thin film transistor (TFT), expecting to obtain a better performance through the control of gate bias. In addition, the transistor’s operation type was transformed by various epitaxial condition, and then the electrical and physical properties were measured and analyzed for mutual verification. At last, two structures were compared to discuss the amelioration. Part one is about the improvement of ZnGa2O4-based MSM PDs. At first, two samples (sample A and B) were fabricated into MSM PDs and measured their I-V characteristics. Next, a 300-nm thick Al metal layer was deposited on the backside of substrate as a reflector. We were looking forward to reflect some part of incident light’s energy to film’s sensing region to raise the photoelectric conversion efficiency. The results showed both samples upgraded 1~2 orders in the on-off ratio in highest photocurrent and responsivity. However, this method has limited improvement. Part two is to change the MSM PDs to phototransistors and investigate related characteristics. As the result, the devices based on this thin film were usually N-type Depletion-mode MOSFETs. Although the 8 orders of on-off ratio and extremely high responsivity were achieved, the require of excessive gate bias to control the channel was the power consumption concern in this application. Furthermore, the extremely long falling time was also considered to the presence of defects in the thin film. Part three is to transform the operational mode of transistor by modulating the DEZn flow rate for various epitaxial conditions. In this part, an influence of epitaxial conditions to the material and electrical characteristics have to be interpreted. First of all, the carrier concentration is extracted by C-V measurement to explain the transformation of transistor’s operation type. Following up were some physical analyses. The corresponding crystallinity of ZnGa2O4 thin films with various DEZn flow were analyzed through X-ray diffraction (XRD). The surface morphology, crystal structure and lattice mismatch were verified through scanning and transmission electron microscopy (SEM and TEM). The SEM results was certified by atomic force microscope (AFM). At last, the chemical bonding and amount of oxygen vacancies in the films were measured through X-ray photoelectron spectroscopy (XPS). The results demonstrated the devices’ performances were closely related to the epitaxial conditions. Part four is to utilize an enhancement-mode TFT as a DUV phototransistor. Besides, the best annealing parameter was used to deal with the defects concern. The physical analyses were presented to discuss the effect of annealing treatment. Through the comparison, the E-mode phototransistor could not only conquer the power consumption problem, but also performed excellent responsivity and response time after thermally annealed. Finally, the overall comparisons of ZnGa2O4-based phototransistors to the MSM PD and other oxide-based phototransistors were set out to propose the advancement and potential in this application.
APA, Harvard, Vancouver, ISO, and other styles
6

(14570256), Dimitrios Kopanakis. "Operapaedia." Thesis, 2004. https://figshare.com/articles/thesis/Operapaedia/22014290.

Full text
Abstract:

This project is concerned with identifying and investigating a problem faced by students undertaking studies in opera, namely, readily available performance related materials for students of opera to consult when preparing for a performance. The purpose of this project is to develop an internet-based resource containing a range of information about operas, musical scores and their interpretation, opera recordings, opera literature, opera composers, opera performers, and opera companies as a solution to this problem. The Project uses aspects of opera interpretation and opera libretti as a theoretical framework.

In order to accomplish these outcomes, this project demonstrates that no single source of information that is presently available in print or electronic form is comprehensive, reliable and convenient enough to provide opera students with information necessary for use in a production. The Project highlights the need for an electronic resource that is comprehensive for opera students.

The analysis of the usability of website research literature indicates that successful electronic resources embody the principles of: "24/7", 'anywhere', 'anytime' access; ease-of-access, user-friendly website design; and resources relevant to the specific enquiry of the user in their design.

The Project leads to the conclusion that no single source of information is comprehensive enough for an opera student to acquire, process and assimilate all of the information necessary for use in a production.

The overarching product of the project is a design and guidelines for the development of an internet-based resource aimed at eliminating the lack of performance related materials in the field of opera study. I call this resource Operapaedia.

APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Performance related materials"

1

Workshop on Performance Related Test Procedures for Bituminous Materials (1997 Dublin). Performance related test procedures for bituminous mixtures: Proceedings of the Workshop on Performance Related Test Procedures for Bituminous Mixtures, Dublin 6-7 November 1997. Dublin: Boole Press, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kandhal, Prithvi S. Aggregate tests related to asphalt concrete performance in pavements. Washington, D.C: National Academy Press, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Saeed, Athar. Performance-related tests of recycled aggregates for use in unbound pavement layers. Washington, D.C: Transportation Research Board, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Saeed, Athar. Performance-related tests of recycled aggregates for use in unbound pavement layers. Washington, D.C: Transportation Research Board, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

ASTM standards for the performance, quality, and health labeling of artists' paints and related materials. West Conshohocken, PA: ASTM, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Dam, Thomas John Van. Guidelines for detection, analysis, and treatment of materials-related distress in concrete pavements. McLean, Va: Federal Highway Administration, Turner-Fairbank Highway Research Center, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Luxembourg), Eurobitume Workshop 99 (1999. Eurobitume Workshop 99: Performance related properties for bituminous binders : workshop briefing : Monday 3rd to Thursday 6th May 1999, European Parliament, Kirchberg Plateau, Luxembourg. Brussels: European Bitumen Association, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Günther, Hans-Peter, ed. Use and Application of High-Performance Steels for Steel Structures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2005. http://dx.doi.org/10.2749/sed008.

Full text
Abstract:
<p>New steel production processes have led to a remarkable improve­ment in steel products within the last few years, and now allows steels to be produced according to the desired mechanical and chemical properties. High-Performance Steel (HPS) is the designa­tion given to this new generation of steels that offer higher performance not only in terms of strength but also toughness, weld­ability, cold formability and corrosion resistance, compared to the traditionally used mild steel grades.</p> <p>The development of HPS goes with today's increased demand for slender lightweight structures, as for example in bridge design and the design of high-rise buildings, where there is a strong require­ment to use high-strength materials in combination with good execution and fabrication properties. However, on the structural engineering side there is a need for knowledge on these new steel grades, and quite often design codes do not provide sufficient information to fully exploit the advantageous properties of HPS.</p> <p>The present volume provides an overview of the development and application of HPS on an international level. This is done by giving information on, for example, the production process, the chemical and mechanical properties, the relevant design and fabrication standards and on recent research results. Approximately fifteen included examples of realised applications aim to provide detailed information based on existing technical solutions, and to point out the major benefits when using HPS in comparison to mild steels.</p> <p>The document is thus not a monograph but an assembly of contri­butions from different countries. lt is separated into chapters related to different countries, namely the USA, Canada, Japan and Europe, all of them providing a state-of-the-art report on HPS.</p>
APA, Harvard, Vancouver, ISO, and other styles
9

Smith, Ian, and Andrea Frangi. Use of Timber in Tall Multi-Storey Buildings. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2014. http://dx.doi.org/10.2749/sed013.

Full text
Abstract:
<p>Since the dawn of civilization, timber has been a primary material for achieving great structural engineering feats. Yet during the late 19th century and most of the 20th century it lost currency as a preferred material for construction of large and tall multi-storey building superstructures. This Structural Engineering Document (SED) addresses a reawakening of interest in timber and timber-based products as primary con-struction materials for relatively tall, multi-storey buildings. Emphasis throughout is on holistically addressing various aspects of performance of complete systems, reflecting that major gaps in knowhow relate to design concepts rather than technical information about timber as a material. Special con-sideration is given to structural form, fire vulnerability, and durability aspects for attaining desired building performance over lifespans that can be centuries long.</p>
APA, Harvard, Vancouver, ISO, and other styles
10

Dieleman, Cock, Ricarda Franzen, Veronika Zangl, and Henk Danner. Dramaturgy. NL Amsterdam: Amsterdam University Press, 2021. http://dx.doi.org/10.5117/9789463724968.

Full text
Abstract:
The image of the dramaturg resembling a stuffy librarian, as opposed to the largely intuitive process of theatre making, belongs to the past. Contemporary theatre performances not only tell a story, but constantly reflect on the world in which that story takes place and is shown. As a result, dramaturgy has become part of the artistic process. Thus everybody involved in a theatre production is concerned with dramaturgical thinking, i.e. how to relate to material, process, audience and society. The dramaturg crosses borders between theory and practice, between theatre makers, performance and audience. Dramaturgy. An Introduction provides a broad overview of the concept of dramaturgy and the profession of the dramaturg. It is intended for students and teachers of theatre and performance studies, but also for directors, scenographers, actors and for all lovers of theatre.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Performance related materials"

1

Mukkamala, Saratchandra Babu. "Hydrogen Storage Performance of Metal Nanoparticle Decorated Multi-walled Carbon Nanotubes." In Carbon Related Materials, 103–25. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7610-2_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ghosh, Subrata, Tom Mathews, S. R. Polaki, and Sang Mun Jeong. "Emerging Vertical Nanostructures for High-Performance Supercapacitor Applications." In Nanostructured Materials for Energy Related Applications, 163–87. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04500-5_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Buchmeiser, M. R. "High Performance Materials for Separation Techniques Via ROMP." In Ring Opening Metathesis Polymerisation and Related Chemistry, 205–15. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0373-5_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Udal, Andres, and Enn Velmre. "Numerical Investigation of SiC Devices Performance Considering the Incomplete Dopant Ionization." In Silicon Carbide and Related Materials 2005, 1383–86. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-425-1.1383.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Zhu, Lin, T. P. Chow, Kenneth A. Jones, Charles J. Scozzie, and Anant Agarwal. "Performance Comparison of 1.5kV 4H-SiC Buried Channel and Lateral Channel JBS Rectifiers." In Silicon Carbide and Related Materials 2005, 1159–62. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-425-1.1159.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Balachandran, S., T. P. Chow, and Anant Agarwal. "Performance Assessment of 4H-SiC Bipolar Junction Transistors and Insulated Gate Bipolar Transistors." In Silicon Carbide and Related Materials 2005, 1433–36. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-425-1.1433.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zhang, Ze Hong, A. E. Grekov, Priyamvada Sadagopan, S. I. Maximenko, and Tangali S. Sudarshan. "Performance of Silicon Carbide PiN Diodes Fabricated on Basal Plane Dislocation-Free Epilayers." In Silicon Carbide and Related Materials 2005, 371–74. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-425-1.371.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Murr, Lawrence E. "Structures and Properties of Keratin-Based and Related Biological Materials." In Handbook of Materials Structures, Properties, Processing and Performance, 483–510. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-01815-7_28.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Murr, Lawrence E. "Structures and Properties of Keratin-Based and Related Biological Materials." In Handbook of Materials Structures, Properties, Processing and Performance, 1–24. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-01905-5_28-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Tarui, Yoichiro, Tomokatsu Watanabe, Keiko Fujihira, Naruhisa Miura, Yukiyasu Nakao, Masayuki Imaizumi, Hiroaki Sumitani, Tetsuya Takami, Tatsuo Ozeki, and Tatsuo Oomori. "Fabrication and Performance of 1.2 kV, 12.9 mΩcm2 4H-SiC Epilayer Channel MOSFET." In Silicon Carbide and Related Materials 2005, 1285–88. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-425-1.1285.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Performance related materials"

1

Akazawa, Masamichi, and Hideki Hasegawa. "Performance comparison of InP and AlGaN/GaN Schottky diode hydrogen sensors." In Related Materials (IPRM). IEEE, 2008. http://dx.doi.org/10.1109/iciprm.2008.4703024.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bing-Ruey Wu, Martin W. Dvorak, Patrick Colbus, T. S. Low, and Don D'Avanzo. "Performance improvement of composition-graded AlGaAsSb/InP double heterojunction bipolar transistors." In Related Materials (IPRM). IEEE, 2009. http://dx.doi.org/10.1109/iciprm.2009.5012409.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lange, M. D., X. B. Mei, T. P. Chin, W. H. Yoshida, W. R. Deal, P. H. Liu, J. Lee, et al. "InAs/InGaAs composite-channel HEMT on InP: Tailoring InGaAs thickness for performance." In Related Materials (IPRM). IEEE, 2008. http://dx.doi.org/10.1109/iciprm.2008.4702935.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Garrigues, M., R. Gil-Sobraques, J.-L. Leclercq, O. Parillaud, J. Decobert, and M. Achouche. "High performance InP/InGaAs strained quantum well interband photodiodes for nir resonant photodetection." In Related Materials (IPRM). IEEE, 2008. http://dx.doi.org/10.1109/iciprm.2008.4702959.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Watanabe, Issei, Akira Endoh, Takashi Mimura, and Toshiaki Matsui. "Simultaneous achievement of high-speed and low-noise performance of pseudomorphic InGaAs/InAlAs HEMTs." In Related Materials (IPRM). IEEE, 2008. http://dx.doi.org/10.1109/iciprm.2008.4702978.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Huang, Y., J. H. Ryou, R. D. Dupuis, F. Dixon, N. Holonyak, and M. Feng. "Device performance of light emitting transistors with C-doped and Zn-doped base layers." In Related Materials (IPRM). IEEE, 2009. http://dx.doi.org/10.1109/iciprm.2009.5012449.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Ha, W., K. Shinohara, Z. Griffith, M. Urteaga, P. Chen, P. Rowell, and B. Brar. "High performance InP HEMT technology with multiple interconnect layers for advanced RF and mixed signal circuits." In Related Materials (IPRM). IEEE, 2009. http://dx.doi.org/10.1109/iciprm.2009.5012455.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ohkubo, Yukio, Taisuke Matsumoto, Takashi Koji, Yoshiaki Amano, Akio Takagi, and Yutaka Matsuoka. "High-performance self-aligned InP/InGaAs DHBTs with a passivation ledge utilizing a thin etching stop layer." In Related Materials (IPRM). IEEE, 2008. http://dx.doi.org/10.1109/iciprm.2008.4702947.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Takegishi, T., H. Watanabe, R. Yamada, T. Matsumoto, S. Hara, and H. I. Fujishiro. "Theoretical study of performance limits in nano-scale InAs HEMTS based on quantum-corrected Monte Carlo method." In Related Materials (IPRM). IEEE, 2009. http://dx.doi.org/10.1109/iciprm.2009.5012457.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Widyatmoko, I. "Some practical aspects of performance related testing of bituminous materials." In Proceedings of the Fourth European Symposium on Performance of Bituminous and Hydraulic Materials in Pavements, Bitmat 4. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203743928-17.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Performance related materials"

1

Calahorra-Jimenez, Maria. Contracting Strategies: A Different Approach to Address Long-term Performance. Mineta Transportation Institute, July 2022. http://dx.doi.org/10.31979/mti.2021.2130.

Full text
Abstract:
For cost-efficiency, public safety, and sustainability, improving long-term performance in highway projects is imperative for public administrations. Project delivery and procurement methods provide an opportunity to align design and construction processes with this goal. While previous studies have explored whether project delivery methods impact the long-term performance of highway projects, these studies did not focus on how core elements within project procurement relate to long-term performance. Thus, to fill this gap, this research explores how and to what extent long-term evaluation criteria are considered in design-build best-value procurement of highway projects. To this end, the team conducted content analysis on 100 projects procured between 2009 and 2019 by 19 DOTs across the U.S. The analysis of 365 evaluation criteria found that (1) roughly 11% of them related to long-term performance. (2) The weight given to these criteria in the overall technical proposal was lower than 30%. (3) Sixty-five percent (65%) of long-term evaluation criteria focused on design while 15% related to materials and technology, respectively. The results of this study are a stepping stone to initiate a deep exploration of the relationship between procurement practices and actual project performance. Currently, as sustainability and life cycle assessments remain top concerns in infrastructure projects, this line of research may benefit DOTs and highway agencies across the U.S. and worldwide.
APA, Harvard, Vancouver, ISO, and other styles
2

Calahorra-Jimenez, Maria. Contracting Strategies: A Different Approach to Address Long-term Performance. Mineta Transportation Institute, July 2022. http://dx.doi.org/10.31979/mti.2022.2130.

Full text
Abstract:
For cost-efficiency, public safety, and sustainability, improving long-term performance in highway projects is imperative for public administrations. Project delivery and procurement methods provide an opportunity to align design and construction processes with this goal. While previous studies have explored whether project delivery methods impact the long-term performance of highway projects, these studies did not focus on how core elements within project procurement relate to long-term performance. Thus, to fill this gap, this research explores how and to what extent long-term evaluation criteria are considered in design-build best-value procurement of highway projects. To this end, the team conducted content analysis on 100 projects procured between 2009 and 2019 by 19 DOTs across the U.S. The analysis of 365 evaluation criteria found that (1) roughly 11% of them related to long-term performance. (2) The weight given to these criteria in the overall technical proposal was lower than 30%. (3) Sixty-five percent (65%) of long-term evaluation criteria focused on design while 15% related to materials and technology, respectively. The results of this study are a stepping stone to initiate a deep exploration of the relationship between procurement practices and actual project performance. Currently, as sustainability and life cycle assessments remain top concerns in infrastructure projects, this line of research may benefit DOTs and highway agencies across the U.S. and worldwide.
APA, Harvard, Vancouver, ISO, and other styles
3

Barkan, Terrance. The Role of Graphene in Achieving e-Mobility in Aerospace Applications. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, December 2022. http://dx.doi.org/10.4271/epr2022030.

Full text
Abstract:
<div class="section abstract"><div class="htmlview paragraph">Advanced two-dimensional (2D) materials discovered in the last two decades are now being produced at scale and are contributing to a wide range of performance enhancements in engineering applications. The most well-known of these novel materials is graphene, a nearly transparent nanomaterial comprising a single layer of bonded carbon atoms. In relative terms, it has the highest level of heat and electrical conductivity, protects against ultraviolet rays, and is strongest material ever measured. These properties have made graphene an attractive potential material for a variety of applications, particularly for transportation related uses, and especially for aerospace engineering. </div><div class="htmlview paragraph"><b>The Role of Graphene in Achieving e-Mobility in Aerospace Applications</b> reviews the current state of graphene-related aerospace applications and identifies the technological challenges facing engineers that look to benefit from graphene’s attractive properties.</div><div class="htmlview paragraph"><a href="https://www.sae.org/publications/edge-research-reports" target="_blank">Click here to access the full SAE EDGE</a><sup>TM</sup><a href="https://www.sae.org/publications/edge-research-reports" target="_blank"> Research Report portfolio.</a></div></div>
APA, Harvard, Vancouver, ISO, and other styles
4

Finkelstain, Israel, Steven Buccola, and Ziv Bar-Shira. Pooling and Pricing Schemes for Marketing Agricultural Products. United States Department of Agriculture, August 1993. http://dx.doi.org/10.32747/1993.7568099.bard.

Full text
Abstract:
In recent years there has been a growing concern over the performance of Israel and U.S. agricultural marketing organizations. In Israel, poor performance of some marketing institutions has led to radical reforms. Examples are the two leading export industries - citrus and flowers. In the U.S., growth of local market power is eliminating competitive row product prices which served as the basis for farmer cooperative payment plans. This research studies, theoretically, several aspects of the above problem and develops empirical methods to assess their relative importance. The theoretical part deals with two related aspects of the operation of processing and marketing firms. The first is the technological structure of these firms. To this end, we formalize a detailed theory that describes the production process itself and the firm's decision. The model accounts for multiple products and product characteristics. The usefulness of the theory for measurement of productivity and pricing of raw material is demonstrated. The second aspect of the processing and marketing firm that we study is unique to the agricultural sector, where many such firms are cooperatives. In such cooperative an efficient and fair mechanism for purchasing raw materials from members is crucial to successful performances of the firm. We focus on: 1) pricing of raw materials. 2) comparison of employment of quota and price regimes by the cooperative to regulate the quantities, supplied by members. We take into consideration that the cooperative management is subject to pressure from member farmers. 3) Tier pricing for raw materials in order to ensure efficiency and zero profits at the cooperative level. This problem is examined in both closed and open cooperatives. The empirical part focuses in: 1) the development of methodologies for estimating demand for differentiated products; 2) assessing farmers response to component pricing; 3) measurement of potential and actual exploitation of market power by an agricultural marketing firm. The usefulness of the developed methodologies are demonstrated by several application to agricultural sub-sectors, including: U.S. dairy industry, Oregon wine industry, Israeli Cotton industry and Israeli Citrus industry.
APA, Harvard, Vancouver, ISO, and other styles
5

Deb, Robin, Paramita Mondal, and Ardavan Ardeshirilajimi. Bridge Decks: Mitigation of Cracking and Increased Durability—Materials Solution (Phase III). Illinois Center for Transportation, December 2020. http://dx.doi.org/10.36501/0197-9191/20-023.

Full text
Abstract:
Type K cement offers a lower slump than conventional concrete, even at a higher water-to-cement ratio. Therefore, a suitable chemical admixture should be added to the Type K concrete mix design at a feasible dosage to achieve and retain target slump. In this project, a compatibility study was performed for Type K concrete with commercially available water-reducing and air-entraining admixtures. Slump and air content losses were measured over a period of 60 minutes after mixing and a particular mid-range water-reducing admixture was found to retain slump effectively. Furthermore, no significant difference in admixture interaction between conventional and Type K concrete was observed. Another concern regarding the use of Type K concrete is that its higher water-to-cement ratio can potentially lead to higher permeability and durability issues. This study also explored the effectiveness of presoaked lightweight aggregates in providing extra water for Type K hydration without increasing the water-to-cement ratio. Permeability of concrete was measured to validate that the use of presoaked lightweight aggregates can lower water adsorption in Type K concrete, enhancing its durability. Extensive data analysis was performed to link the small-scale material test results with a structural test performed at Saint Louis University. A consistent relation was established in most cases, validating the effectiveness of both testing methods in understanding the performance of proposed shrinkage-mitigation strategies. Stress analysis was performed to rank the mitigation strategies. Type K incorporation is reported to be the most effective method for shrinkage-related crack mitigation among the mixes tested in this study. The second-best choice is the use of Type K in combination with either presoaked lightweight aggregates or shrinkage-reducing admixtures. All mitigation strategies tested in this work were proved to be significantly better than using no mitigation strategy.
APA, Harvard, Vancouver, ISO, and other styles
6

Ahlgren, Per, Tobias Jeppsson, Esa Stenberg, and Erik Berg. A bibliometric analysis of battery research with the BATTERY 2030+ roadmap as point of departure. Uppsala universitet, 2022. http://dx.doi.org/10.33063/diva-473454.

Full text
Abstract:
In this bibliometric study, we analyze the six battery research subfields identified in the BATTERY 2030+ roadmap: Battery Interface Genome, Materials Acceleration Platform, Recyclability, Smart functionalities: Self-healing, Smart functionalities: Sensing, and Manufacturability. In addition, we analyze the entire research field related to BATTERY 2030+ as a whole, using two operationalizations. We (a) evaluate the European standing in the subfields/the BATTERY 2030+ field in comparison to the rest of the world, and (b) identify strongholds of the subfields/the BATTERY 2030+ field across Europe. For each subfield and the field as a whole, we used seed articles, i.e. articles listed in the BATTERY 2030+ roadmap or cited by such articles, in order to generate additional, similar articles located in an algorithmically obtained classification system. The output of the analysis is publication volumes, field normalized citation impact values with comparisons between country/country aggregates and between organizations, co-publishing networks between countries and organizations, and keyword co-occurrence networks. For the results related to (a), the performance of EU & associated (countries) is similar to China and the aggregate Japan-South Korea-Singapore and well below North America regarding citation impact and with respect to the field as a whole. Exceptions are, however, the subfields Battery Interface Genome and Recyclability. For the results related to (b), there is a large variability in the EU & associated organizations regarding volume in the different subfields. For citation impact, examples of high-performing EU & associated organizations are ETH Zurich and Max Planck Society for the Advancement of Science.
APA, Harvard, Vancouver, ISO, and other styles
7

Quinn, Meghan. Geotechnical effects on fiber optic distributed acoustic sensing performance. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41325.

Full text
Abstract:
Distributed Acoustic Sensing (DAS) is a fiber optic sensing system that is used for vibration monitoring. At a minimum, DAS is composed of a fiber optic cable and an optic analyzer called an interrogator. The oil and gas industry has used DAS for over a decade to monitor infrastructure such as pipelines for leaks, and in recent years changes in DAS performance over time have been observed for DAS arrays that are buried in the ground. This dissertation investigates the effect that soil type, soil temperature, soil moisture, time in-situ, and vehicle loading have on DAS performance for fiber optic cables buried in soil. This was accomplished through a field testing program involving two newly installed DAS arrays. For the first installation, a new portion of DAS array was added to an existing DAS array installed a decade prior. The new portion of the DAS array was installed in four different soil types: native fill, sand, gravel, and an excavatable flowable fill. Soil moisture and temperature sensors were buried adjacent to the fiber optic cable to monitor seasonal environmental changes over time. Periodic impact testing was performed at set locations along the DAS array for over one year. A second, temporary DAS array was installed to test the effect of vehicle loading on DAS performance. Signal to Noise Ratio (SNR) of the DAS response was used for all the tests to evaluate the system performance. The results of the impact testing program indicated that the portions of the array in gravel performed more consistently over time. Changes in soil moisture or soil temperature did not appear to affect DAS performance. The results also indicated that time DAS performance does change somewhat over time. Performance variance increased in new portions of array in all material types through time. The SNR in portions of the DAS array in native silty sand material dropped slightly, while the SNR in portions of the array in sand fill and flowable fill material decreased significantly over time. This significant change in performance occurred while testing halted from March 2020 to August 2020 due to the Covid-19 pandemic. These significant changes in performance were observed in the new portion of test bed, while the performance of the prior installation remained consistent. It may be that, after some time in-situ, SNR in a DAS array will reach a steady state. Though it is unfortunate that testing was on pause while changes in DAS performance developed, the observed changes emphasize the potential of DAS to be used for infrastructure change-detection monitoring. In the temporary test bed, increasing vehicle loads were observed to increase DAS performance, although there was considerable variability in the measured SNR. The significant variation in DAS response is likely due to various industrial activities on-site and some disturbance to the array while on-boarding and off-boarding vehicles. The results of this experiment indicated that the presence of load on less than 10% of an array channel length may improve DAS performance. Overall, this dissertation provides guidance that can help inform the civil engineering community with respect to installation design recommendations related to DAS used for infrastructure monitoring.
APA, Harvard, Vancouver, ISO, and other styles
8

Thompson, Marshall, and David Lippert. Flexible Pavement Design (Full-depth Asphalt and Rubblization): A Summary of Activities. Illinois Center for Transportation, July 2021. http://dx.doi.org/10.36501/0197-9191/21-021.

Full text
Abstract:
This report summarizes activities undertaken to support and ensure that the Illinois Department of Transportation utilizes the best demonstrated available technology for design and construction of full-depth hot-mix asphalt (HMA) pavements and HMA pavements on rubblized Portland cement concrete pavement (PCCP). To achieve this goal, the researchers reviewed pavement design and special provisions for full-depth asphalt and rubblization projects as well as full-depth asphalt and rubblization project performance via condition surveys and deflection measurements. They also modified design inputs as needed from the review of literature and responded to specific issues related to full-depth asphalt and rubblization design and construction. The researchers studied 32 rubblization projects on the interstate system and found this rehabilitation technique is providing good to excellent performance that exceeds design expectations. They provided input on proposed changes to full-depth hot-mix asphalt pavement on rubblized PCCP specifications as well as provided input on the RoadTec 1105e material transfer device. Analysis of traffic speed deflectometer data obtained on several hot-mix asphalt and rubblized pavements resulted in the development of analysis algorithms.
APA, Harvard, Vancouver, ISO, and other styles
9

Qamhia, Issam, and Erol Tutumluer. Evaluation of Geosynthetics Use in Pavement Foundation Layers and Their Effects on Design Methods. Illinois Center for Transportation, August 2021. http://dx.doi.org/10.36501/0197-9191/21-025.

Full text
Abstract:
This report presents findings of a research effort aimed at reviewing and updating existing Illinois Department of Transportation (IDOT) specifications and manuals regarding the use of geosynthetic materials in pavements. The project consisted of three tasks: evaluate current IDOT practice related to the use of geosynthetics; review research and state of the practice on geosynthetics applications, available products, design methods, and specifications; and propose recommendations for geosynthetic solutions in pavements to modernize IDOT’s practices and manuals. The review of IDOT specifications revealed that geotextiles are the most used geosynthetic product in Illinois, followed by geogrids. Several of IDOT’s manuals have comprehensive guidelines to properly design and construct pavements with geosynthetics, but several knowledge gaps and potential areas for modernization and adoption of new specifications still exist. Based on the review of the available design methods and the most relevant geosynthetic properties and characterization methods linked to field performance, several updates to IDOT’s practice were proposed. Areas of improvement are listed as follows. First, establish proper mechanisms for using geogrids, geocells, and geotextiles in subgrade restraint and base stabilization applications. This includes using shear wave transducers, i.e., bender elements, to quantify local stiffness enhancements and adopting the Giroud and Han design method for subgrade restraint applications. Second, update IDOT’s Subgrade Stability Manual to include property requirements for geogrids, geotextiles, and geocells suitable for subgrade restraint applications. Third, establish proper standards on stabilization, separation, and pumping resistance for geotextiles by incorporating recent research findings on geotextile clogging and permeability criteria. Fourth, promote the use of modern geosynthetic products, such as geotextiles with enhanced lateral drainage, and fifth, elaborate on proper methods for construction/quality control measures for pavements with geosynthetics.
APA, Harvard, Vancouver, ISO, and other styles
10

Lee, Jusang, John E. Haddock, Dario D. Batioja Alvarez, and Reyhaneh Rahbar Rastegar. Quality Control and Quality Assurance of Asphalt Mixtures Using Laboratory Rutting and Cracking Tests. Purdue University, 2019. http://dx.doi.org/10.5703/1288284317087.

Full text
Abstract:
The main objectives of this project were to review the available balanced-mix design (BMD) methodologies, understand the I-FIT and Hamburg Wheel Tracking Test (HWTT) test methods using INDOT asphalt mixtures, and to explore the application of these tests to both a BMD approach and as performance-related Quality Control (QC) and Quality Acceptance (QA) methods. Two QA mixture specimen types, plant-mixed laboratory-compacted (PMLC) and plant-mixed field-compacted (PMFC) were used in the determination of cracking and rutting parameters. Distribution functions for the flexibility index (FI) values and rutting parameters were determined for various mixture types. The effects of specimen geometry and air voids contents on the calculated Flexibility Index (FI) and rutting parameters were investigated. The fatigue characteristics of selected asphalt mixtures were determined using the S-VECD test according to different FI levels for different conditions. A typical full-depth pavement section was implemented in FlexPAVE to explore the cracking characteristics of INDOT asphalt mixtures by investigating the relationship between the FI values of QA samples with the FlexPAVE pavement performance predictions. The FI values obtained from PMFC specimens were consistently higher than their corresponding PMLC specimens. This study also found that FI values were affected significantly by variations in specimen thickness and air voids contents, having higher FI values with higher air voids contents and thinner specimens. These observations do not agree with the general material-performance expectations that better cracking resistance is achieved with lower air voids content and thicker layers. Additionally, PG 70-22 mixtures show the lowest mean FI values followed by the PG 76-22 and 64-22 mixtures. The same order was observed from the ΔTc (asphalt binder cracking index) of INDOT’s 2017 and 2018 projects. Finally, it was found that the HWTT showed reasonable sensitivity to the different characteristics (e.g., aggregate sizes, binder types, and air voids contents) of asphalt mixtures. Mixtures containing modified asphalt binders showed better rut resistance and higher Rutting Resistance Index (RRI) than those containing unmodified binders.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Performance related materials' for particular source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography