14,236 research outputs found
Walter E. Oberer Retirement Luncheon
No full textDean Oberer was emeritus of law and former dean of the S.J. Quinney College of Law. He received the Burlington Resources Foundation Faculty Achievement Award in 1991 and was particularly noted for his scholarship in labor law and was co-author of a book, "Cases and Materials on Labor Law: Collective Bargaining in a Free Society.
Active noise and vibration control in vehicles
No full textHigh standards of noise, vibration and harshness performance are expected in vehicle design. Refinement is therefore one of the main engineering/design attributes to be addressed when developing new vehicle models and components. This book provides a review of noise and vibration refinement principles and methods, advanced experimental and modelling techniques, and palliative treatments necessary in the process of vehicle design, development and integration in order to meet noise and vibration standards. Case studies from the collective experience of specialists working for major automotive companies are included to form an important reference for engineers practising in the motor industry, who seek to overcome the technological challenges faced in developing quieter, more comfortable cars. <P>Key Features: reviews noise and vibration refinement principles, methods and modelling techniques necessary in vehicle design, development and integration in order to meet noise and vibration standards; outlines objectives driving development and the significance of vehicle noise and vibration refinement whilst documenting definitions of key terms for use in practice; case studies demonstrate measurement and modelling in industry and illustrate key testing methods including hand sensing and environmental testing. <P>Contents: Part 1 Introduction: Rationale and history of vehicle noise and vibration refinement; Target setting and benchmarking for vehicle noise and vibration refinement. Part 2 Measurement and modelling: Vehicle vibration measurement and analysis; Vehicle noise measurement and analysis; Random signal processing and spectrum analysis in vehicle noise and vibration refinement; Theory and application of modal analysis in vehicle noise and vibration refinement; Mid and high-frequency problems in vehicle noise and vibration refinement statistical energy analysis and wave approaches; Advanced simulation techniques in vehicle noise and vibration refinement; Advanced experimental techniques in vehicle noise and vibration refinement. Part 3 Noise and vibration refinement in vehicle systems: Aerodynamic noise and its refinement in vehicles; Active noise and vibration control in vehicles; Noise and vibration refinement of powertrain systems in vehicles; Vehicle interior noise refinement cabin sound package design and development; Noise and vibration refinement of chassis and suspension; Body structure noise and vibration refinement; Vehicle noise and vibration strategy-based diagnostics
Expression of carbohydrate metabolism-related genes in rice leaf sheath during the heading period.
No full textISEE: Internet-based Simulation for Earthquake Engineering—Part II: The application protocol approach
No full textThe Microstructural Evolution of Infrared Joining of TiAl Intermerallics Using Ti-15Cu-15Ni Foil
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An experimental comparison of nonlinear and parabolic tapered waveguide lasers and a demonstration of broad-stripe diode pumping
No full textThis paper compares the laser performance of linear and parabolic tapered waveguides in ion-exchanged Nd:Glass, finding significant advantage for the linear guides, with demonstrated adiabatic expansion to widths of 250µm. The characterization of these waveguide lasers by Ti:sapphire pumping is followed by a demonstration of high-power diode-pumped laser operation and a discussion of the optimization of such a scheme for producing high-power integrated-optics laser sources
Regularisation and robustness of personal audio systems
No full textAs well as being able to reproduce sound in one region of space it would be useful to reduce the level of reproduced sound in other spatial regions, with a “personal audio” system. For mobile devices this is motivated by issues of privacy for the user and the need to reduce annoyance for other people nearby. Such personal audio systems can be realised with arrays of loudspeakers that become superdirectional at low frequencies, when the array dimensions are small compared with the acoustic wavelength. The design of the array then becomes a compromise between performance and array effort, defined as the sum of the squared driving signals. Various methods of formulating this tradeoff as a regularisation problem have been suggested and the connection between these formulations is discussed. Large array effort are due to strongly self-cancelling multipole arrays. A concern is then the robustness of such as array to variations in the acoustic environment and driver sensitivity and position. The design of an array that is robust to these uncertainties then leads to a generalisation of regularisatio
Calibration of Capacitive Couplers for Online PD Detection in HV Cables
No full textOn-line partial discharge (PD) detection for high voltage cable systems is important as it ensures that possible faults can be detected and remedied before catastrophic failure occurs. Of growing interest is the use of non-conventional field coupling techniques to detect PD signals and the VHF capacitive coupler sensor is finding increasing application in PD detection systems due to its low cost, reliability and applicability to online detection. However, it has a major disadvantage as it is very difficult to quantify the sensor output voltage in terms of the conventional PD quantity, apparent charge. Proposed methods rely on pulse injection either at the cable termination or via another coupler in order to obtain a calibration ratio, these approaches have been assessed experimentally. In addition, frequency response (FR) measurements have been taken and used to generate a transfer function relating the coupler output to signals present on the cable core conductor. The transfer function has been used as the central component of a simulation model that estimates the calibration ratio. Good agreement has been achieved between the simulation model output and experimental results. PD tests have also been undertaken on a section of 66kV HV cable, containing an earthed needle within the cable dielectric. Obtained results have been compared with measurements using the conventional electrical detection method. Results indicate that a better estimation of reduced charge is possible using a frequency response measurement to provide coefficients for a simulation model than existing pulse injection calibration methods
Arsaces Armeniae rex in scenam dabitvr ab auctoribus & actoribus eloquentiæ studiosis in collegio societatis Iesv Antverpiæ die [ ] ianuarij, M.DC.XXXIX.
No full textProbably printed in AntwerpBacker-Sommervogel [S.J.] VIII, 1667, nr. 30bis; VIII, 9, nr. 1 (mentions Gilles Thybault as the author)Europeana-GoogleBook
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