Results 271 to 280 of about 152,778 (309)
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Adjustable‐Speed Pumps for Utilities
Journal AWWA, 1961This article discusses the suitability of adjustable‐speed centrifugal pumps for systems for which pipe friction is a predominant factor to be considered. Fewer adjustable‐speed pumps than constant‐speed pumps are required for a given job. The savings that result from the use of fewer units more than offset the initial higher cost of variable‐speed ...
Adam W. Kubik, Kenneth H. McEwan
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IEEE Power Engineering Review, 1982
Today, high energy costs and the availability of large (Example: 3000A, 4000V) solid- state devices are forcing industry to look at new and different adjustable speed drives. This paper introduces three different types of adjustable able speed drives for use on large fans and mixed flow pumps. The three systems are: (1) the current source inverter; (2)
Charles LeMone, Tadahiko Takeishi
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Today, high energy costs and the availability of large (Example: 3000A, 4000V) solid- state devices are forcing industry to look at new and different adjustable speed drives. This paper introduces three different types of adjustable able speed drives for use on large fans and mixed flow pumps. The three systems are: (1) the current source inverter; (2)
Charles LeMone, Tadahiko Takeishi
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1995
Abstract : This TechData Sheet is intended to help activity personnel identify cost effective energy projects for energy projects for Adjustable Speed Drives (ASDs). With this guide an energy manager can identify when an ASD is applicable and do a first-run evaluation of the project payback.
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Abstract : This TechData Sheet is intended to help activity personnel identify cost effective energy projects for energy projects for Adjustable Speed Drives (ASDs). With this guide an energy manager can identify when an ASD is applicable and do a first-run evaluation of the project payback.
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Self-adjusting scheme for high speed routers
2008 33rd IEEE Conference on Local Computer Networks (LCN), 2008Many schemes of high-performance IP address lookup have been proposed recently. But most of them do not process dynamically the packets and give no specific interest in the skewness of the traffic. Hence, the lack of dynamic packet routing algorithms has been the motivation for this research.
Nizar Ben Neji, Adel Bouhoula
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Industrial Structure, Concentration and the Speed of Price Adjustment
The Journal of Industrial Economics, 1988It is argued that the relationship between market structure and the speed of price adjustment involves two distinct forces with opposing directions: "t he leadership effect" and the "industry profitability effect." The direction of the relationship will depend on the relative importance of these effects.
Bedrossian, Arakel, Moschos, Demetrios
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Automatically Adjusting the Speed of E-Learning Videos
Proceedings of the 33rd Annual ACM Conference Extended Abstracts on Human Factors in Computing Systems, 2015Videos are becoming a commonplace way for students to view instructional material. Although current technology allows customization of default playback speeds to cater to individual students' desired pace, we highlight a need for more dynamic or reactive control systems capable of varying playback in response to viewer needs or activities (e.g. slowing
Sunghyun Song +4 more
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Macroeconomic Conditions and Capital Structure Adjustment Speed
SSRN Electronic Journal, 2008Abstract Using two dynamic partial adjustment capital structure models to estimate the impact of several macroeconomic factors on the speed of capital structure adjustment toward target leverage, we find evidence that firms adjust their leverage toward target faster in good macroeconomic states relative to bad states.
Douglas O. Cook, Tian Tang
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The Speed of Adjustment in Growth Models
1982Until now, the focus of our analysis has been on the existence of the balanced growth path and its properties. However, it is of considerable interest to consider the question: How long will it take an economic system to reach a balanced growth path? For example, suppose that a given economy is already in long run equilibrium growth.
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Fast switching adjustable speed drives: an overview
Power Engineering Journal, 1999The world energy consumption is increasing and adjustable speed drives will account for a large portion of all motor drives. Insulated gate bipolar transistors and similar fast switching PWM drives will continue to be used. While these drives are reliable and offer excellent control response, there are some drawbacks.
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Intelligent Adjustable-Speed Drive on an FPGA
International Journal of Power Electronics, 2022openaire +1 more source