Relevant bibliographies by topics / Cam phaser

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

Academic literature on the topic 'Cam phaser'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Cam phaser"

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Cheever Jr, Gordon, Charles Sullivan, Karl Schten, Ash Punater, and Clinton Erickson. "Design of an Electric Variable CAM Phaser Controller." SAE International Journal of Passenger Cars - Electronic and Electrical Systems 5, no. 2 (2012): 403–13. http://dx.doi.org/10.4271/2012-01-0433.

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Andert, Jakob, Christian Sohn, Serge Klein, Andres Tönnesmann, Jens Oesterdiekhoff, and Michael Becker. "Influence of sensor and communication setup on electric cam phaser control quality." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 3 (2018): 687–96. http://dx.doi.org/10.1177/0954407017746296.

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This study investigates the control quality of an electric cam phaser system. The impact of different sensor concepts, synchronization algorithms, controller and hardware topologies on the control quality is examined by using a transient simulation covering the electric cam phaser, valve train, mechanical transmission and a wide variety of cam- and crankshaft trigger wheels. Limited angular accuracy effects are simulated by realistic sensor models and the processing of sensor signals by a real-time capable synchronization algorithm. Nonlinear friction in transmission and valve train are considered by the simulation accordingly. Furthermore, the effects of distributed controller algorithms based on conventional electronic control units are evaluated. Communication latencies have a strong impact on the control plant and are taken into account during controller definition. The effects of different layouts are compared in the time domain, and a sensitivity analysis is carried out to evaluate the effects of different parameters on the cam phasing control quality. The control quality is measured in terms of overshoot, phasing duration and energy consumption of a phasing event. Using a sensor fusion for the current cam phasing angle and an integrated controller layout – that is, an architecture without any communication delay – improves the controllability and reduces overshooting, phasing duration and electrical energy consumption under transient conditions.
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Babu, Numbury Surendra, and Didugu Jayaprakash. "Computational Study of the Stability of Tautomers and equilibrium constants of Cyanuric acid (CA) in Different solvents." JOURNAL OF ADVANCES IN CHEMISTRY 11, no. 2 (2015): 3485–97. http://dx.doi.org/10.24297/jac.v11i2.6691.

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In the present investigation, the tautomeric and equilibrium of Cyanuric acid has been studied using Hartifock (HF) method in the gas phase and different solvents using the PCM model. The relative energies of these tautomers have been calculated at the HF level of theory using 6-311++ G (d,p) basis set. Energetics and relative stabilities of the tautomers were compared and analyzed in both the gaseous and different solvents. The results indicate that the keto tautomer (CA1) is the most stable form in the gas phase and other solvents. The order of stability of isomers was found to be CA1 > CA3> CA11> CA2> CA6> CA10> CA7> CA4> CA5> CA9>CA8. Having the largest dipole moment the CA8 tautomer is expected to have the strongest interaction with polar solvents. The HF method calculated tautomeric equilibrium constants with respect to the most stable tautomer CA1 of Cyanuric acid both in the gas and in different solvents. The of the equilibrium constants calculated starting from the general outline of interconversion.
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Satyanarayana, P. S., Balasubramanian Loganathan, V. Lakshminarasimhan, A. Ramesh, and S. Sujatha. "Development of a Cam Phaser System to Improve the Performance of a Small Engine." SAE International Journal of Engines 8, no. 1 (2014): 250–57. http://dx.doi.org/10.4271/2014-32-0110.

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Schett, G., M. J. Loza, A. Palanichamy, et al. "POS1036 COLLAGEN TURNOVER MARKERS ARE ASSOCIATED WITH ACTIVE PSORIATIC ARTHRITIS AND DECREASE WITH GUSELKUMAB TREATMENT IN A PHASE-3 CLINICAL TRIAL." Annals of the Rheumatic Diseases 80, Suppl 1 (2021): 790.2–792. http://dx.doi.org/10.1136/annrheumdis-2021-eular.779.

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Background:Guselkumab (GUS), an interleukin-23p19-subunit monoclonal antibody, demonstrated efficacy compared to placebo (PBO) in reducing skin and musculoskeletal signs and symptoms in patients with active psoriatic arthritis (PsA) in two phase-3 studies, DISCOVER-1 & -2, and in retarding structural damage in DISCOVER-2.1,2Objectives:To evaluate tissue-derived extracellular matrix (ECM) products3,4 in serum of PsA patients in the DISCOVER-2 study and their relationship with radiographic damage, clinical response, and impact of treatment.Methods:In DISCOVER-2, patients were treated with GUS 100 mg at Week (w) 0, 4, then every 8w (q8w); GUS 100 mg every 4w (q4w); or matching PBO. At w24, PBO patients were crossed over to GUS q4w. A total of 11 serum biomarkers of ECM collagen formation (PRO-C1, PRO-C2, PRO-C3, PRO-C4, and PRO-C6) and degradation (C1M, C2M, C3M, C4M, C6M, and COL10) were measured (by Nordic Bioscience) in a subset of 260 patients from the DISCOVER-2 program at Weeks 0, 4, 24, & 52 and in 76 healthy controls matched for age, sex, and ethnicity. PsA patients were selected randomly, though enriching for subjects with greatest radiographic changes, at Weeks 24 and 52. Significance defined by p<0.05 and |fold difference| ≥1.25.Results:At baseline, collagen degradation markers C1M, C3M, C4M, C6M and collagen formation markers PRO-C3 and PRO-C6 were significantly higher in the serum of PsA patients compared to matched healthy controls. Baseline C3M, C4M, and C6M were positively correlated to baseline skin and joint disease; baseline C1M, C3M, C4M, C6M, and PRO-C1 were positively correlated to baseline radiographic damage (data not shown). Levels of C1M (a maker indicating breakdown of collagen type I, the major collagen subtype in the bone) were significantly decreased after 24w treatment with GUS (Figure 1), reaching significant differences from placebo with the GUS 100 mg q4w group. For the PBO patients who crossed over to GUS at w24, there was also a reduction in this marker observed at w52 (Figure 1). In patients treated with GUS or PBO, there were no significant differences in baseline expression levels of the analytes in responders (patients achieving ACR20 at w24) compared with non-responders. However, ACR20 responders in the combined GUS group had a significantly greater reduction in C1M levels compared to non-responders (p=0.0065) at w24.Conclusion:This work provides evidence that collagen biomarkers in serum are dysregulated in patients with PsA compared to healthy controls, and that GUS impacts levels of these proteins. Importantly, C1M serves as a biomarker that tracks with joint response. We observed a greater reduction in C1M in ACR responders compared to non-responders, providing insight into how GUS may be working to protect from degradation of bone in PsA.References:[1]Deodhar A et al. Lancet 2020;395:1115-1125[2]Mease PJ et al. Lancet 2020;395:1126-1136[3]Gudmann NS et al. Clin Exp Rheumatol 2017;35:653-659[4]Sardar S et al. Annals of the Rheum Dis 2019;78(Suppl 2): https://ard.bmj.com/content/78/Suppl_2/867.1Disclosure of Interests:Georg Schett Speakers bureau: AbbVie, BMS, Celgene, Janssen, Lilly, Novartis, Roche, UCB, Consultant of: AbbVie, BMS, Celgene, Janssen, Lilly, Novartis, Roche, UCB, Matthew J Loza Shareholder of: Johnson & Johnson, Employee of: Janssen Research & Development, LLC, Arumugam Palanichamy Shareholder of: Johnson & Johnson, Employee of: Janssen Research & Development, LLC, Oliver FitzGerald Speakers bureau: AbbVie, Amgen, BMS, Celgene, Janssen, Lilly, Novartis, Consultant of: AbbVie, Amgen, BMS, Celgene, Janssen, Lilly, Novartis, Christopher T. Ritchlin Speakers bureau: AbbVie, Amgen, Gilead, Janssen, Lilly, Novartis, Pfizer, UCB, Consultant of: AbbVie, Amgen, Gilead, Janssen, Lilly, Novartis, Pfizer, UCB, Frederic Baribaud Shareholder of: Johnson & Johnson, Employee of: Janssen Research & Development, LLC, Kristen Sweet Shareholder of: Johnson & Johnson, Employee of: Janssen Research & Development, LLC.
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Carr, Bruce A., Thomas M. Houlihan, and Michael A. Polini. "CAD/CAM in Phased Maintenance." Journal of Ship Production 7, no. 04 (1991): 234–47. http://dx.doi.org/10.5957/jsp.1991.7.4.234.

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The authors' company is a medium-sized engineering company specializing in naval ship repair. The bulk of corporate work centers on the Phased Maintenance (PM) of three classes of ships. Typically, each PM contract covers three to five different ships per class scheduled for 90-day Availabilities at approximately one-year intervals over a period of five years. The type of work to be performed during each Phased Maintenance Availability (PMA) falls into one of two categories: ship alterations or ship repairs. The first group, ship alterations, is characterized by detailed, long-lead engineering and planning efforts, typically beginning 540 days prior to the vessels's arrival. The second group, ship repairs, makes up the other end of the spectrum with short lead times and compressed service details. The majority of repair items are identified 60 days prior to an Availability, while some are not determined until after the vessel has arrived in the shipyard. The engineering department that services PMA work is composed of three disciplines: structural, mechanical and electrical. The mechanical discipline is further subdivided into the areas of machinery and piping/HVAC. While the nature of PMA work within each discipline is peculiar to the application, the process is similar in each. Reference information is gathered and verified, technical analysis is provided where necessary, and detailed drawings are prepared and submitted for Navy approval prior to shipyard production. All drawings are developed using two-dimensional drafting techniques at various sites by teams of computer-aided design (CAD) input operators utilizing color graphic workstations on a multi-shift basis as required by the workload. Completed drawings are transferred to the engineering site over a network link, where additional workstations are available for engineers to check and correct them as necessary
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Gilbert, M. R. "Calcium Vanadinite: An Alternative Apatite Host for Cl-rich Wastes." MRS Proceedings 1665 (2014): 319–24. http://dx.doi.org/10.1557/opl.2014.661.

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ABSTRACTApatites are often seen as good potential candidates for the immobilization of halide-rich wastes and, in particular, chlorapatite (Ca5(PO4)3Cl) has received much attention in recent years. However, synthesis of chlorapatite waste-forms can produce a complicated multi-phase system, with a number of secondary phases forming, including β-TCP (Ca3(PO4)2), spodiosite (Ca2(PO4)Cl) and pyrophosphate (Ca2P2O7), many of which require elevated temperatures and extended calcinations times to reduce. Calcium vanadinite (Ca5(VO4)3Cl) demonstrates a much simpler phase system, with calcination at 750 °C yielding Ca5(VO4)3Cl together a small quantity of a Ca2V2O7secondary phase, the formation of which can be retarded by the addition of excess CaCl2. Characterization of compositions doped with SmCl3as an inactive analogue for AnCl3show the Cl to be immobilized in the vanadinite whilst the Sm forms a wakefieldite (SmVO4) phase.
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Jackers, Nastasia, Nathalie Maes, France Lambert, Adelin Albert, and Carole Charavet. "Standard vs computer-aided design/computer-aided manufacturing customized self-ligating systems using indirect bonding with both:." Angle Orthodontist 91, no. 1 (2020): 74–80. http://dx.doi.org/10.2319/012920-59.1.

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ABSTRACT Objective To compare treatment duration and quality between standard vs computer-aided design/computer-aided manufacturing (CAD/CAM) customized self-ligating systems using indirect bonding with both. Materials and Methods This comparative trial included 24 patients: 12 treated with a CAD/CAM custom indirect bonding self-ligating system (CAD/CAM) and 12 others treated with an indirect bonding self-ligating standard system (I-STD). For each group, overall orthodontic treatment (OT) time was calculated and included the time needed to place each arch as well as the duration of the alignment and fine-tuning phases. The quality of the final result was analyzed using the American Board of Orthodontics Cast-Radiograph Evaluation. Patient-reported outcome measures (PROMs) were also evaluated. Results Patient characteristics were similar between the 2 groups except for age, which was slightly lower in the I-SDT group. Overall OT time was increased by 26% in the I-STD group compared with the CAD/CAM group (497 ± 40 days vs 393 ± 55 days, P = 0.0002) due to a shorter fine-tuning phase in the latter group (P<0.01). No difference was found between the groups for alignment phase. Quality of the final result was similar (I-STD, 25.7 ± 6.1; CAD/CAM, 21.6 ± 6.3) among the groups. Finally, no difference was found in the PROMs variables. Conclusions Despite a 26% longer OT time when compared with the CAD/CAM customized bracket system, the indirect bonding self-ligating bracket system demonstrated the same quality of treatment. PROMs demonstrated a high level of acceptance and satisfaction for both techniques.
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Lin, Jiusheng, Henry van den Bedem, Axel T. Brunger, and Mark A. Wilson. "Atomic resolution experimental phase information reveals extensive disorder and bound 2-methyl-2,4-pentanediol in Ca2+-calmodulin." Acta Crystallographica Section D Structural Biology 72, no. 1 (2016): 83–92. http://dx.doi.org/10.1107/s2059798315021609.

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Calmodulin (CaM) is the primary calcium signaling protein in eukaryotes and has been extensively studied using various biophysical techniques. Prior crystal structures have noted the presence of ambiguous electron density in both hydrophobic binding pockets of Ca2+-CaM, but no assignment of these features has been made. In addition, Ca2+-CaM samples many conformational substates in the crystal and accurately modeling the full range of this functionally important disorder is challenging. In order to characterize these features in a minimally biased manner, a 1.0 Å resolution single-wavelength anomalous diffraction data set was measured for selenomethionine-substituted Ca2+-CaM. Density-modified electron-density maps enabled the accurate assignment of Ca2+-CaM main-chain and side-chain disorder. These experimental maps also substantiate complex disorder models that were automatically built using low-contour features of model-phased electron density. Furthermore, experimental electron-density maps reveal that 2-methyl-2,4-pentanediol (MPD) is present in the C-terminal domain, mediates a lattice contact between N-terminal domains and may occupy the N-terminal binding pocket. The majority of the crystal structures of target-free Ca2+-CaM have been derived from crystals grown using MPD as a precipitant, and thus MPD is likely to be bound in functionally critical regions of Ca2+-CaM in most of these structures. The adventitious binding of MPD helps to explain differences between the Ca2+-CaM crystal and solution structures and is likely to favor more open conformations of the EF-hands in the crystal.
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Kim, Dae Sung, and Jong Kook Lee. "Sintered Characteristics of 3 Mole% Yttria-Stabilized Zirconia Polycrystals (3Y-TZP) Implants Manufactured by Slip-Casting and Computer Aided Design/Computer Aided Manufacturing (CAD/CAM)." Journal of Nanoscience and Nanotechnology 21, no. 7 (2021): 3877–81. http://dx.doi.org/10.1166/jnn.2021.19203.

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Two types of dense and toughened 3Y-TZP zirconia implants were fabricated by the sintering of green compacts. Then, the sintered properties of the two implants were compared. Slip-cast and post-sintered all-ceramic zirconia implants were fabricated by the heat treatment at 1450 °C for 2 h using optimal slurry conditions (60 wt% solid content, 1 wt% dispersant, and pH 12). Computer-aided design and manufacturing (CAD/CAM)-machined and post-sintered zirconia crowns, supplied by a dental hospital, were obtained by sintering at 1650 °C for 5 h. The X-ray diffraction results indicated that the phase composition of the slip-casted specimen was completely tetragonal, but the CAD/CAM machined sample was composed of mixed phases of main tetragonal and minor monoclinic crystals. The sintered density and Vickers hardness of the slip-casted specimen were 6.07 g/cm3 and 1367 Hv, respectively, and these were higher than those of the CAD/CAM machined specimen. From the comparative results of the surface microstructure, hardness, and roughness between the two sintered specimens, the slip-casted specimen was found to have higher surface roughness and mechanical hardness, smaller grain size, and less surface micro-cracks than the CAD/CAM machined specimen.
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Dissertations / Theses on the topic "Cam phaser"

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Eriksson, Mikael, and Daniel Olovsson. "An Alternative Variable Valve Timing System for Heavy Duty Vehicles." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-60153.

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The ability to control engine valve timing has the potential to alter the engine performance over the entire operating range. The outcome of valve timing technology enables the possibility to increase efficiency, lowering emissions, increase engine torque, etc. One of the simplest ways to obtain a variable valve timing is to use cam phasers. The dynamics of a hydraulic cam phaser has been studied, three concepts with the purpose to control such an element has been developed using simulation driven product development. Focus have been on robustness, simplicity and implementation. A final concept using on/off solenoids to control a torque driven cam phaser has been designed and simulated in GT-SUITE which validated its performance and functionality. A dynamic model was built in Simulink which simulated the behaviour of the cam phaser and provided tools for optimizing the rotor design. By combining the knowledge of mechanical- and control engineering at Scania, the development process of such machine elements was effective. The outcome of this thesis has given a new perspective in understanding these components and their potentials.
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Schütze, Martina. "Die frühen Phasen des konstruktiven Entwerfens - Unterstützungspotential verschiedenartiger Arbeitsmittel." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2003. http://nbn-resolving.de/urn:nbn:de:swb:14-1070879931250-56663.

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Vor dem Hintergrund empirischer Befunde zur Nutzung von CAD-Systemen beim konstruktiven Entwerfen in der Ausbildung sowie der Berufspraxis wird in der vorliegenden Arbeit über eine Befragungsstudie sowie eine laborexperimentelle Studie zur Bewertung des Unterstützungspotentials verschiedenartiger Arbeitsmittel in den frühen Phasen des Entwerfens von technischen Gebilden berichtet. Zu den beim Entwerfen eingesetzten Arbeitsmitteln zählen neben einfachen, aufwandsarmen Werkzeugen wie Papier und Bleistift auch computerisierte Automaten wie z. B. CAD-Systeme. CAD-Systeme sind durch die bereitgestellten Funktionalitäten heutzutage ein wesentliches Arbeitsmittel für den Konstrukteur; die für die außerordentlich komplexen, kostenbestimmenden frühen Entwurfsphasen wichtigen Funktionen werden aber offenbar nur in unzureichendem Maße oder überhaupt nicht zur Verfügung gestellt. Dadurch notwendige Wechsel zwischen analogen und digitalen Arbeitsmitteln müssen bislang manuell durchgeführt werden und haben neben zeitlichen Einbußen in der Regel Fehler und Informationsverluste bei der Übertragung zur Folge. Mit dem LCD-Monitor mit integriertem Graphiktablett WACOM Cintiq 15X, dessen Bedienung sich an den Eigenschaften herkömmlicher Handskizzen orientiert, wird eine durchgängige Nutzung von CAD-Systemen angestrebt. Zunächst wurden diese drei Arbeitsmittel hinsichtlich Ihrer Anforderungen an den Nutzer bei einem Einsatz in den frühen Entwurfsphasen aus tätigkeitspsychologischer Sicht analysiert. In der experimentellen Hauptuntersuchung bearbeiteten drei Versuchsgruppen einer Stichprobe von 66 Studierenden einer ingenieurtechnischen Fakultät dasselbe wissensreiche, praxisnahe Entwurfsproblem unter den experimentellen Bedingungen der Entwurfsentwicklung durch Freihandskizzieren mit Papier und Bleistift, mit digitalem Graphiktablett oder mit Hilfe des Rechnerprogramms AutoCAD. Es erfolgte eine differenzierte Betrachtung des Einflusses dieser verschiedenartigen Arbeitsmittel auf unterschiedliche Variablen der Bereiche ?Ergebnisse?, ?Erleben? und ?Prozess?. Im Ergebnis der Analysen konnte weitestgehend hypothesenkonform gezeigt werden, dass Freihandskizzieren - unabhängig vom Arbeitsmittel - dem Entwerfen mittels CAD in allen betrachteten effektivitäts- und effizienzbestimmenden Kriterien überlegen war. Prozessorientierte Analysen des äußeren Handlungsablaufes sowie handlungsbegleitender mentaler Prozesse gaben erste Hinweise auf mögliche Ursachen dieser Befunde aus handlungspsychologischer Sicht. Dazu war eine Untersuchungsmethodik entwickelt worden, die es erlaubt, begründet auf den ?inneren Verlauf? des Entwerfens zu schließen. Die Ergebnisse konnten in einem weiteren Schritt an einer Problemstellung mit vergleichbarem Schwierigkeitsgrad weitgehend repliziert werden. Aus den Analysen und Resultaten wurden Schlussfolgerungen für die Konstruktionsausbildung und die Gestaltung digitaler Unterstützungssysteme abgeleitet<br>Due to its economic importance, engineering design as a demanding and complex problem-solving activity has been the subject of interdisciplinary research of both psychologists and design scientists for several years. In particular, the early stages of problem clarification and conceptual design are of significant interest. The design process can be supported in several different ways, e. g. with simple low-expenditure sketches. Today, high-performance digital tools (e. g. CAD) have become indispensable in product development. But their characteristics hypothetically result in an additional workload of mental capacity and hinder the full and correct establishment of necessary mental problem representations. So design engineers often combine sketches and CAD. In order to avoid a loss of time and information when switching between the different media, the functions of sketches should be implemented into CAD. An approach to realise this is the interactive pen display WACOM Cintiq 15X, which claims to have the same characteristics as paper &amp;amp; pencil together with differing kinds of computer functionalities. Its effectiveness and efficiency has not yet been investigated. This study focuses on the comparison of the three media ?paper &amp;amp; pencil?, ?pen display? and ?AutoCAD? in the early stages of the design process. On the basis of the psychological demands on the user, support potential was analysed by recording variables concerning the results, the subjective experience and the process. The sample was composed of 66 students of the mechanical engineering graduate program at the Dresden University of Technology. Random sampling resulted in three subsamples of 22 subjects each. The research was carried out in a laboratory experimental study, where people work alone on a given design scenario. No significant differences could be found between the two groups designing by freehandsketching with paper &amp;amp; pencil and with pen display. This speaks well for comparable demands of these two media on the user. Subjects who designed with AutoCAD produced solutions with a significant lower quality and communication of the technical information content. They needed significantly more time to develop the solution. These results can be regarded as evidence of the hypothetically discussed demands on the user: current CAD-systems do not take cognitive abilities and limitations into consideration sufficiently as well as ways of intuitive and effort-saving externalisation. Results could be replicated extensively in a study with a design problem of equally difficult requirement structure. Finally, hints for education of engineering design students and essential requirements for digital support tools in the early stages of the design process were derived
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Burnett, Robert M. "The Burnett Site : a Cascade Phase camp on the lower Willamette River." PDXScholar, 1991. https://pdxscholar.library.pdx.edu/open_access_etds/4171.

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Artifacts recovered from archaeological excavations near the Willamette River in Lake Oswego, Oregon indicate the presence there of a Late Windust-Early Cascade Phase site possibly dating to 9,000 B.P. The assemblage includes 137 projectile points, bifaces or point fragments, nearly all of the Cascade-type. Two stem fragments and one complete point which are similar to those of the Windust Phase which dates 10,000-8,000 B.P. in the southern Columbia Plateau also were found. Stone knives, choppers, scrapers, hammerstones, cores and microblades also are included in the assemblage. No later type notched or stemmed points have been recovered from the site. If the hypothesized dates are valid, the site will be the oldest discovered to date in the Lower Willamette River-Portland Basin area. This thesis reports on the site, its excavation and its artifacts.
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Venkataraman, Suzanne Marie. "CAD graphics utilization in the design and marketing phases of textile/apparel product development." Thesis, Virginia Tech, 1992. http://hdl.handle.net/10919/41538.

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The purpose of this research was to identify the expertise of CAD graphics operators/managers in the design and marketing phases of textile/apparel product development. Additionally, the purposes were to determine the effect of CAD graphics on product development in the textile/apparel industry, and to identify future needs and uses of CAD graphics in the industry. A questionnaire was sent to 117 CAD graphics operators/managers. The results from the questionnaire were obtained through frequency and percentage distributions. The major findings of this study concluded that textile design and/or colorations and coloration of sketches were the major uses for CAD graphics systems. The shortening of response time of development of idea in design cycle was the major benefit of using a CAD graphics system. Future needs and wants were found to be mainly in the areas of better color control, matching and selection, better resolution in printing, and faster, larger printout capabilities.<br>Master of Science
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Middlebrook, Christopher. "INFRARED ANTENNA-COUPLED PHASED-ARRAY." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3266.

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Phased-array antennas are commonplace in the radiofrequency portion of the electromagnetic spectrum. Exploitation of phasing effects between multiple antennas facilitates a wide range of applications, including synthetic-aperture radar, beam forming, and beam scanning. For the first time, the phased addition of multiple dipole antennas is demonstrated in the infrared, at a wavelength of 10.6 micrometers. Coplanar strip lines are used to interconnect the antennas, preserving the phase of the individual contributions. Several different proof-of-concept experiments are performed, using planar antennas fabricated with direct-write electron-beam lithography. Infrared-frequency currents from two dipole antennas are summed together at a common feedpoint and dissipated in a bolometric load. Angular pattern measurements show that the direction of maximum gain depends on the phase difference between the antennas. As more antennas are added together in phase, beam narrowing is observed in the angular response. Another experiment uses a two-dipole array to directly measure the magnitude of the mutual coherence function, at the plane of the antennas, of a spatially incoherent narrowband source. Measurements are also made of the broadside antenna response comparing air-side and substrate-side situations for a dipole antenna fabricated on a hemispherical immersion lens. In all cases, the measured behavior is confirmed by electromagnetic analysis.<br>Ph.D.<br>Optics and Photonics<br>Optics and Photonics<br>Optics PhD
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Gao, Jason. "Equalisation for carrierless amplitude and phase modulation." Curtin University of Technology, Western Australian Telecommunications Research Institute (WATRI), 2002. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=14683.

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Carrierless amplitude and phase (CAP) modulation is generally regarded as a bandwidth efficient two-dimensional (2-D) passband line code. It is closely related to the pulse amplitude modulation (PAM) and quadrature amplitude modulation (QAM) schemes. CAP has been proposed for various digital subscriber loop (DSL) systems over unshielded twisted pairs of copper wires. In this thesis, our main focus is on the minimum mean-square error (MMSE) performance of the ideal (i.e., infinite length) linear and non-linear (decision feedback) CAP receivers/equalisers in the presence of additive, coloured Gaussian noise, and/or data-like cross-talks. An in-depth analysis is given on the performance of both receiver structures. In the case of the linear receiver, one possible view of the overall CAP transceiver system which includes both data and cross-talk transmission paths is that it is a linear multiple-input multiple-output (MIMO) system. Accordingly, the existing MMSE results for a general MIMO system are applicable also to CAP systems. However, up to date, this approach was shown to be unsuccessful in the sense that the derived MMSE expressions are too complex and offer little insights. In our analysis, in order to find a more incisive MMSE expression, we reconsider the problem of minimisation of the MSEs at slicers. By exploiting the Hilbert transform pair relationship between the impulse responses of the inphase and quadrature transmit shaping filters, we are able to obtain an elegant and more meaningful MMSE expression, as well as the corresponding transfer functions of the optimum linear receive filters. In the case of the nonlinear, or decision feedback equaliser (DFE), receiver, we start our analysis with the receiver structure of a generic multidimensional (>/= 3) CAP-type system.<br>This receiver consists of a bank of analog receive filters, the number of which equals the dimension of the CAP line code, and a matrix of cross-connected, infinite-length, baud-spaced feedback filters. It is shown that the optimum filters and the corresponding MMSE of the DFE receiver require the factorisation of a discrete-time channel spectral matrix. This mathematically intractable step can be avoided, however, when the DFE results are specialised to a standard 2-D CAP system where we are able to again exploit the Hilbert transform pair relationship to derive a further and more useful MMSE expression. Three sets of numerical studies are given on the MMSE performance of the CAP receivers. In the first set of studies. we model the sum of all crosstalks as an additive, Gaussian noise source and select three test transmission channels over which we compare the MMSE performance of the linear and DFE receiver structures. In the second set of studies, we compare the performance of the two receiver structures, but in a data-like cross-talk environment. The results demonstrate the importance of NEXT equalisation in the design of CAP receivers operating in a NEXT dominant environment. In the final set of studies which follows from the second set of studies, we investigate the relationship between the MMSE performance of the DFE receiver and system parameters which include excess bandwidth, data rate, CAP scheme. and relative phase between the received signal and the NEXT signal. The results show that data-like cross-talks can be effectively suppressed by using a large excess bandwidth (alpha > 1 in the case of a RC transmit shaping filter) alone.<br>The relative phase also affect; the receiver performance. but to a lesser degree. In addition to the MMSE performance analysis. implementation issues of an adaptive linear CAP receiver are also considered. We propose a novel linear receiver by appending two fixed analog filters to the front-end of the existing adaptive linear receiver using fractionally-spaced equalisers (FSE). We show that if the analog filters are matched to the transmit shaping filters, then inphase and quadrature finite-length FSEs in the proposed receiver have the same NINISE solution. We further propose a modified least-mean-square (LMS) algorithm which takes advantage of this feature. The convergence analysis of the proposed LMS algorithm is also given. We show that the modified LMS algorithm converges approximately twice as fast as the standard LMS algorithm, given the same misadjustment, or alternatively, it halves the misadjustment, given the same initial convergence rate.
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Belhachemi, Naima. "Etude de l'entrée en phase M méiotique : rôle des protéines Myt1 et Xe-p9." Paris 6, 2012. http://www.theses.fr/2012PA066352.

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L’objectif de cette thèse visait à améliorer la compréhension des mécanismes de contrôle des divisions méiotiques, un événement crucial en biologie de la reproduction et du développement. Il repose sur l’utilisation de l’ovocyte de Xénope, cellule bloquée en prophase de première division méiotique dans les ovaires. La reprise de la méiose a lieu lors de l’ovulation, en réponse à une hormone stéroïde, la progestérone. Elle se caractérise par la mise en place d'un premier fuseau de métaphase, l’expulsion du premier globule polaire et la formation du fuseau de métaphase de deuxième division méiotique, stade auquel l’ovocyte se bloque jusqu'à la fécondation. Le passage de la prophase I à la métaphase II est appelé maturation méiotique et est utilisé comme modèle d’étude de la transition G2-M du cycle cellulaire. La reprise de la méiose se caractérise par l’activation du MPF (M-phase Promoting Factor ou complexe Cdc2/Cycline B), facteur universel d’entrée en phase M chez les cellules eucaryotes. Nous nous sommes intéressés à l’étude des mécanismes régulant l’activation du MPF au cours de la reprise de la méiose. Cette activation repose sur la conversion du stock de pré-MPF inactif (stock de Cdc2/Cycline B maintenu inactif grâce à deux phosphorylations inhibitrices sur les résidus Thr14 et Tyr15 de Cdc2) en MPF actif, par un mécanisme d'auto-amplification. Pour que cet événement ait lieu un préalable est nécessaire : un changement d'équilibre des activités des enzymes régulant le niveau de phosphorylation des Thr14 et Tyr15 ; la phosphatase Cdc25 et la kinase Myt1. Dans un premier temps, nous avons montré que l’activité de Myt1 était indispensable dans le maintien des ovocytes en prophase I. Par la suite nous avons mis en évidence un mécanismes initiateur de l'entrée en méiose : des complexes de MPF actifs, nouvellement formés par les Cyclines synthétisées en réponse à la progestérone et du Cdc2 libre, prennent en charge l'inhibition initiale de Myt1, ce qui change l'équilibre Cdc25/Myt1 et lance la conversion du pré-MPF en MPF actif. Dans un deuxième temps, nous nous sommes intéressés à l’implication des protéines de la famille Cks, partenaires peu étudiés des Cdk/Cyclines, lors de la reprise de la méiose. Nous avons montré que la protéine Xe-p9, homologue de Cks chez le Xénope, forme un complexe avec un pool spécifique de la protéine Cdc2, non associée à une Cycline et phosphorylée sur le résidu Thr161. L'association de cette réserve spécifique de Cks/Cdc2 avec les Cyclines nouvellement synthétisées en réponse à la progestérone, aboutirait à la formation des néo-complexes de MPF actif, déjà phosphorylés sur la Thr161 et qui serviraient à lancer la boucle d'auto-amplification du MPF. Nos résultats suggèrent donc que la protéine Xe-p9 joue un rôle positif essentiel dans l'activation du MPF et l’initiation de la méiose dans l'ovocyte de Xénope<br>The main objective of this Thesis was to unravel the mechanisms allowing the activation of the molecular engine driving entry into M-phase in eukaryotic cells: MPF (M-Phase promoting Factor). For this purpose, meiotic divisions of the Xenopus oocytes were selected as a model system. Xenopus oocytes are naturally arrested in prophase of the first meiotic division. After progesterone stimulation, they complete the first meiotic division, form a metaphase I spindle and resume the first meiotic division with the extrusion of the first polar body. They immediately enter the second meiotic division by the formation of a metaphase II spindle and arrest at this stage until fertilization. This process depends the tight regulation of MPF activity (M-phase promoting factor), a complex between Cyclin B and the Cyclin-dependent kinase, Cdc2. Progesterone-triggered meiosis resumption ultimately leads to conversion of pre-MPF (a stockpile of inactive MPF due to two inhibitory phosphorylations, on Thr14 and Tyr15) into active MPF by an auto-amplification mechanism. MPF activation through removal of the inhibitory phosphorylations, is controlled by the activities of the Ccd25 phosphatase and the counteracting Myt1 kinase. The main results of this work are : 1) Myt1 function is required to maintain prophase I arrest in oocytes and Myt1 inhibition is an early event of meiosis resumption, controlled by neo-synthesized Cyclins, thus newly formed Cdc2/Cyclin B complexes. We propose a model in which the significant upregulation of Cyclin B synthesis following progesterone stimulation produces a small population of active Cdc2-Cyclin B, which is responsible for early Myt1 inhibition; this change in the balance between Cdc25 and Myt1 ensures rapid and complete conversion of pre-MPF into active MPF. 2) We then studied the implication of Cks proteins, Cdk-associated proteins, in the resumption of meiosis. We showed that the Xenopus Cks homolog Xe-p9 is present in oocytes and associated to a special fraction of free Cdc2, carrying the activating phosphorylation on Thr161. Furthermore, a functional approach allowed us to establish that Xe-p9 protein has an essential role in Xenopus meiotic M-phase entry. Overall our results led us to propose a model in which Cks-bound Cdc2, and already phosphorylated on Thr161, associates with newly synthesized Cyclins and the resulting active and ready-to-use MPF molecules act as the molecular trigger of meiosis re-entry
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Unwin, Beverley Victoria. "Arctic ice cap velocity variations revealed using ERS SAR interferometry." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287749.

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This thesis will examine the velocity structure of Austfonna, a large ice cap in the Svalbard archipelago. The remoteness of its location had previously hindered detailed observation by traditional methods, but indirect evidence suggested that it had the potential to be dynamically interesting. A recently developed remote sensing technique, SAR interferometry (inSAR), has allowed us to obtain the most detailed map of Austfonna's topography to date, plus unprecedented synoptic measurements of its velocity field. A four year time series of data acquired by the European Remote Sensing satellites ERS-1 and ERS-2 has been used to delineate active and inactive areas of the ice cap, which suggest that past ideas about Austfonna's thermal structure may need to be re-examined. It has also revealed large temporal velocity variations in one of its major drainage basins. These are difficult to classify because intermittent sampling has prevented us from determining their temporal wavelength, and also because globally the database of observed glacier velocity variations is so sparse that the range of possible variable flow scenarios is unknown. The work here demonstrates the huge potential for inSAR in helping to resolve such issues, and in providing an invaluable resource for scientists monitoring the stability of the world's ice fields.
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Slovick, Brian Alan. "Infrared phased-array antenna-coupled tunnel diodes." Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5049.

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Infrared (IR) dipole antenna-coupled metal-oxide-metal (MOM) tunnel diodes provide a unique detection mechanism that allows for determination of the polarization and wavelength of an optical field. By integrating the MOM diode into a phased-array antenna, the angle of arrival and degree of coherence of received IR radiation can be determined. The angular response characteristics of IR dipole antennas are determined by boundary conditions imposed by the surrounding dielectric or conductive environment on the radiated fields. To explore the influence of the substrate configuration, single dipole antennas are fabricated on both planar and hemispherical lens substrates. Measurements demonstrate that the angular response can be tailored by the thickness of the electrical isolation stand-off layer on which the detector is fabricated and/or the inclusion of a ground plane. Directional detection of IR radiation is achieved with a pair of dipole antennas coupled to a MOM diode through a coplanar strip transmission line. The direction of maximum angular response is altered by varying the position of the diode along the transmission line connecting the antenna elements. By fabricating the devices on a quarter wave layer above a ground plane, narrow beam widths of 35?? full width at half maximum and reception angles of ??50?? are achievable with minimal side-lobe contributions. Phased-array antennas can also be used to assess the degree of coherence of a partially coherent field. For a two-element array, the degree of coherence is a measure of the correlation of electric fields received by the antennas as a function of the element separation.<br>ID: 029810472; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Thesis (Ph.D.)--University of Central Florida, 2011.; Includes bibliographical references (p. 96-102).<br>Ph.D.<br>Doctorate<br>Optics and Photonics
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Baity, Cortnie S. "Healthy Reintegration: The Effectiveness of Military Teen Adventure Camp Participation on Adolescent Perceptions of Self-Efficacy." UKnowledge, 2016. http://uknowledge.uky.edu/hes_etds/36.

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Perceived self-efficacy plays a key role in healthy reintegration post-deployment. Reintegration is characterized as the final stage in the deployment cycle, including returning home from combat and reassuming home-front roles and responsibilities. The objective of this study is to describe a program, specifically the Military Teen Adventure Camp (MTAC), and evaluate the program’s effectiveness in increasing perceptions of self-efficacy among adolescents who have experienced the deployment of at least one parent. The findings suggest participating in Military Teen Adventure Camps have a positive effect on adolescent perceptions of self-efficacy, which could decrease family distress during reintegration.
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Books on the topic "Cam phaser"

1

Xiang bian cai liao yu xiang bian chu neng ji shu. Ke xue chu ban she, 2009.

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Xiang bian cai liao yu xiang bian chu neng ji shu. Ke xue chu ban she, 2009.

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Cai liao xiang bian guo cheng wei guan zu zhi mo ni: Simulation for the materials microstructure evolution in phase transformation process. Guo fang gong ye chu ban she, 2010.

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1969-, Collins Paul, ed. To Ruhleben--and back: A great adventure in three phases. Collins Library, 2002.

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Montana. Dept. of Fish, Wildlife, and Parks. [Environmental assessment for the Bannack Phase II Development Project]. The Dept., 1995.

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Heck, Dana B. Phase I, archeological investigations at the maintenance complex/park headquarters, Fort Necessity National Battlefield, Fayette County, Pennsylvania. John Milner Associates, 1992.

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Pierre, Maheu, ed. La mort, dernière étape de la croissance. Ed. du Rocher, 1997.

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La mort, dernière étape de la croissance. Pocket, 1993.

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International Conference on Displacive Phase Transformations and Their Applications in Materials Engineering (1996 University of Illinois). International Conference on Displacive Phase Transformations and Their Applications in Materials Engineering: In honor of Professor C.M. Wayman on the occasion of his retirement. TMS, 1998.

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David, Kessler, ed. Leçons de vie: Deux experts de la mort et des phases terminales nous révèlent les mystères de la vie. JC Lattès, 2002.

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Book chapters on the topic "Cam phaser"

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Bilger, Wolfgang. "Phase der Inbetriebnahme." In CIM für mittelständische Unternehmen. Physica-Verlag HD, 1991. http://dx.doi.org/10.1007/978-3-642-93630-2_6.

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Heydenreich, Markus, and Remco van der Hofstad. "Uniqueness of the Phase Transition." In CRM Short Courses. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62473-0_3.

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Stroud, Ian Anthony, and Hildegarde Nagy. "Early-Phase Design." In Solid Modelling and CAD Systems. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-259-9_11.

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Zheng, Chenguang, Qun Li, Yiyi Wang, and Tao Zhang. "Theta Phase Time-Delayed Modulating Low Gamma Amplitude in Hippocampal CA3–CA1 Network." In Advances in Cognitive Neurodynamics (V). Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0207-6_36.

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Schnauffer, Rainer, and Hans-Hermann Jung. "Phasen der Implementierung eines CRM-Systems." In CRM-Entscheidungen richtig treffen. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-17120-8_8.

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Stauss, Bernd. "Grundlagen und Phasen der Kundenbeziehung: Der Kundenbeziehungs-Lebenszyklus." In Grundlagen des CRM. Gabler Verlag, 2004. http://dx.doi.org/10.1007/978-3-322-99592-6_15.

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Shuai, Jing, and Zhifeng Ren. "Ca1−xYbxMg2Bi2 and Ca1−xYbxZn2Sb2-Related 1–2–2 Zintl Phases." In Advanced Thermoelectrics. CRC Press, 2017. http://dx.doi.org/10.1201/9781315153766-7.

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Meneguzzi, M. "Numerical simulation of two-phase flows." In CRM Proceedings and Lecture Notes. American Mathematical Society, 1998. http://dx.doi.org/10.1090/crmp/016/08.

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Allibert, C., and G. Schneider. "Summary of Discussions: Phase Relations and Microstructure." In Concerted European Action on Magnets (CEAM). Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1135-2_32.

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Buschow, K. H. J., and D. G. Pettifor. "Summary of Discussion: New Phases, Structures and Properties." In Concerted European Action on Magnets (CEAM). Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1135-2_13.

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Conference papers on the topic "Cam phaser"

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Gauthier, Daniel G., Thomas H. Lichti, and John H. Waller. "Improving Cam Phaser Performance Using Robust Engineering Techniques." In Powertrain & Fluid Systems Conference & Exhibition. SAE International, 2005. http://dx.doi.org/10.4271/2005-01-3903.

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Gaudino, P., A. Bianco, R. Fiorenza, M. Pirelli, and P. Pallotti. "Integration of a CAM Phaser on an Engine to Reduce Fuel Consumption: A Comprehensive Approach to the System." In ASME 2003 Internal Combustion Engine and Rail Transportation Divisions Fall Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/icef2003-0731.

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The paper presented describes the application of a Continuously Variable Cam Phaser (CVCP) to an existing engine, with the scope of reducing significantly the engine specific fuel consumption at part load, through the reduction of pumping losses. A single vane-type cam phaser was adopted, which controls both intake and exhaust cam events simultaneously, thanks to the particular cam timing assembly used on the base engine (FIAT-GM Powertrain FIRE 1,4 16v). The cam phaser itself is powered by the same oil which lubricates the engine, through a three-way solenoid valve controlled by the Engine Management System (EMS) with an on-off duty cycle signal. The design and experimental activity done to introduce the CVCP on an existing engine is described, which must comply with a number of key features needed (advance and retard travel speed, precision in actuation, minimum oil leakage, no increase of oil pressure required, minimum additional oil mass flow required) and constraints required (reduced modifications of base engine and of production line, system cost). In particular the base engine structure, which features cam timing command through toothed belt, limited room in the cylinder head for oil and blow-by gases, hydraulic tappets, wide camshaft bearing diameter, no external oil/gas separator, determined the need to limit the overall oil mass flow within the cylinder head: this was required to avoid possible oil recirculation into the intake manifold through the crankcase venting system. For this and other reasons, an accurate and comprehensive optimization of all the components involved in the above described system was needed. An extensive experimental activity was performed, which included the cam phaser design optimization, the re-definition of camshaft bearing and hydraulic tappet clearances, the re-design of piston rings, some prescriptions for the cam phaser control strategies and calibration of the EMS. This development work achieved a system definition which solves all the main problems described above, with no additional costs with respect to (w.r.t.) the first version of the CVCP engine, since no additional parts have been required nor particular material or machining or configurations were prescribed. The described engine is currently in its industrialization phase: it is planned to produce about 1000 engines/day in the Italian FIRE engine manufacturing plant (Termoli).
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Pfeiffer, Jeffrey, Matthew J. Kulpa, Ken Simpson, Dennis Reed, and Joon-Ho Yoo. "A Verification Study for Cam Phaser Position Control using Robust Engineering Techniques." In SAE 2001 World Congress. SAE International, 2001. http://dx.doi.org/10.4271/2001-01-0777.

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Roth, David B., Philip Keller, and Michael Becker. "Requirements of External EGR Systems for Dual Cam Phaser Turbo GDI Engines." In SAE 2010 World Congress & Exhibition. SAE International, 2010. http://dx.doi.org/10.4271/2010-01-0588.

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Zheng, Liyun, and Jeremy Plenzler. "Characterization of Engine Variable Cam Phaser Fluid Dynamics and Phaser's Ability to Reject System Disturbances." In SAE 2004 World Congress & Exhibition. SAE International, 2004. http://dx.doi.org/10.4271/2004-01-1389.

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Kulpa, Mattew J. "The Importance of Cam Phaser Control to Obtain Emission and Fuel Economy Benefits." In SAE Brasil 98 VII International Mobility Technology Conference and Exhibit. SAE International, 1998. http://dx.doi.org/10.4271/982957.

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Astarita, M., A. Caraceni, V. Cioffi, et al. "Virtual Testing and Design Of Experiments for Functional Validation of Cam Phaser Control." In SAE 2004 World Congress & Exhibition. SAE International, 2004. http://dx.doi.org/10.4271/2004-01-0785.

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Fiorenza, R., G. Formisano, and L. Strazzullo. "Continuously Variable Cam Phaser Optimization for Spark Ignition Gasoline Engine: A Computational Methodology Approach." In SAE 2005 World Congress & Exhibition. SAE International, 2005. http://dx.doi.org/10.4271/2005-01-0227.

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Erlien, Stephen M., Adam F. Jungkunz, and J. Christian Gerdes. "Multi-Cylinder HCCI Control With Cam Phaser Variable Valve Actuation Using Model Predictive Control." In ASME 2012 5th Annual Dynamic Systems and Control Conference joint with the JSME 2012 11th Motion and Vibration Conference. ASME, 2012. http://dx.doi.org/10.1115/dscc2012-movic2012-8585.

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Sheikh, Shabbir, Andreas Thoelke, Uday Deshmukh, and Krishna Kumar Rathore. "Application of Electric Cam Phaser System (ECP) for Smooth Engine Starting Behavior in Hybrid Vehicles." In Symposium on International Automotive Technology. SAE International, 2021. http://dx.doi.org/10.4271/2021-26-0057.

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Reports on the topic "Cam phaser"

1

Horvath, John, and Jonathan M. Ross. Evaluation of Shipbuilding CAD/CAM/CIM Systems - Phase II (Requirements for Future Systems). Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada446310.

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Carr, Bruce A., Thomas M. Houlihan, and Michael A. Polini. The National Shipbuilding Research Program, 1990 Ship Production Symposium, Paper No. 6B-2: CAD/CAM in Phased Maintenance. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada451932.

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Iyer, Ananth V., Steven R. Dunlop, Anmol Guram Singh, Mihir Bhatia, and Sazzadur Rahman. Developing a Business Ecosystem around Autonomous Vehicle Infrastructure in Indiana. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317088.

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INDOT will soon be embarking on infrastructure planning to accommodate autonomous vehicles. This new technology affords the ability to impact economic value creation across the supply chain in Indiana, as well as foster economic development in Indiana to support these emerging technologies. This proposal will be a first cut towards exploring the development of a strategy to realize this potential. Our proposal will consist of two phases. Phase 1: A focus on industry choices and plans that can inform INDOT choices. Phase 2: A focus on INDOT’s internal decision making, risk tolerance, and choices regarding infrastructure projects.
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Peeta, Srinivas, and Weimin Zhou. Minimizing Truck-Car Conflicts on Highways, Phase I. Purdue University, 2004. http://dx.doi.org/10.5703/1288284313270.

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Johnson, F., D. Miller, J. Zamecnik, and D. Lambert. ALTERNATE REDUCTANT COLD CAP EVALUATION FURNACE PHASE I TESTING. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1130786.

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Johnson, F. C., M. E. Stone, and D. H. Miller. Alternate Reductant Cold Cap Evaluation Furnace Phase II Testing. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1154718.

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Clausen, Jay L., Anthony Bednar, Dennis Lambert, et al. Phase II Tungsten Fate-and Transport Study for Camp Edwards. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada520193.

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Bingham, Richard, and Wilhelm E. Kineses. Augmented Cognition - Phase 4 Cognitive Assessment and Task Management (CAT-M). Defense Technical Information Center, 2008. http://dx.doi.org/10.21236/ada491443.

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Hayes, Anne M., Eileen Dombrowski, Allison H. Shefcyk, and Jennae Bult. Learning Disabilities Screening and Evaluation Guide for Low- and Middle-Income Countries. RTI Press, 2018. http://dx.doi.org/10.3768/rtipress.2018.op.0052.1804.

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Learning disabilities are among the most common disabilities experienced in childhood and adulthood. Although identifying learning disabilities in a school setting is a complex process, it is particularly challenging in low- and middle-income countries that lack the appropriate resources, tools, and supports. This guide provides an introduction to learning disabilities and describes the processes and practices that are necessary for the identification process. It also describes a phased approach that countries can use to assess their current screening and evaluation services, as well as determine the steps needed to develop, strengthen, and build systems that support students with learning disabilities. This guide also provides intervention recommendations that teachers and school administrators can implement at each phase of system development. Although this guide primarily addresses learning disabilities, the practices, processes, and systems described may be also used to improve the identification of other disabilities commonly encountered in schools.
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Handler, B. H., R. A. Bryant, A. F. Twitty, et al. NALDA (Naval Aviation Logistics Data Analysis) CAI prototype: Phase 2, Final report. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/6062492.

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