Thematische Bibliographien / Load bypassing

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Auswahl der wissenschaftlichen Literatur zum Thema „Load bypassing“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 14. Februar 2022

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Zeitschriftenartikel zum Thema "Load bypassing"

Zhou, Fan, Goce Trajcevski, Roberto Tamassia, Besim Avci, Ashfaq Khokhar und Peter Scheuermann. „Bypassing holes in sensor networks: Load-balance vs. latency“. Ad Hoc Networks 61 (Juni 2017): 16–32. http://dx.doi.org/10.1016/j.adhoc.2017.03.002.

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HARADA, Minoru, Kazuo ASHIDA, Takashi DENO und Yuji OHMOTO. „Experimental Study on Bypassing Tunnel of Bed Load Transport in a Reservoir“. PROCEEDINGS OF HYDRAULIC ENGINEERING 40 (1996): 813–18. http://dx.doi.org/10.2208/prohe.40.813.

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Nguyen, Phi Le, Yusheng Ji, Zhi Liu, Huy Vu und Khanh-Van Nguyen. „Distributed hole-bypassing protocol in WSNs with constant stretch and load balancing“. Computer Networks 129 (Dezember 2017): 232–50. http://dx.doi.org/10.1016/j.comnet.2017.10.001.

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DOLOGLONYAN, A. V., und V. T. MATVIIENKO. „HEAT GENERATION CONTROL IN MICROGAS TURBINE PLANTS WITH WARMTH REGENERATION“. Fundamental and Applied Problems of Engineering and Technology 3 (2021): 3–11. http://dx.doi.org/10.33979/2073-7408-2021-347-3-3-11.

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The subject of consideration in the article is a mathematical model for calculating the main parameters of regenerative MGTPs when using bypassing cyclic air past the regenerator to control heat generation for cogeneration MGTPs. It has been established that the use of air bypassing past the regenerator makes it possible to change the amount of heat generated by the cogeneration MGTP over a wide range (up to 75...80%). This makes it possible to meet the needs of local facilities for heat at cyclic or variable heat load, ensuring the stability of the supply of electricity. This model can be used for simplified and preliminary calculations of MGTP.

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Clemens, F. H. L. R., H. J. van Mameren und J. Kollen. „Optimising the Efficiency of Storm Water Settling Basins by Means of Bypassing“. Water Science and Technology 27, Nr. 5-6 (01.03.1993): 105–10. http://dx.doi.org/10.2166/wst.1993.0490.

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The reduction in pollutional load realised by storm water settling basins is potentially reduced due to the occurrence of a partially mixed situation in the basin or due to resuspension of settled material. The decrease in efficiency can theoretically be avoided by means of partially bypassing the basin. In order to quantify the potential increase in efficiency a settling basin in Amersfoort is taken as an example. This basin seems to behave like an almost completely mixed system, bypassing would increase the overall efficiency from ca. 34 % to ca 39 % for three overflows. The dynamic behaviour of settling basins, scouring conditions and the boundary conditions for which settling basins are to be designed are the research needs for further development in the field of storm water settling basins.

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Allen, Matthew J., Katy L. Townsend, Thomas W. Bauer, Stefan M. Gabriel, Mary OʼConnell und Anton Clifford. „Evaluation of the Safety of a Novel Knee Load-Bypassing Device in a Sheep Model“. Journal of Bone and Joint Surgery-American Volume 94, Nr. 1 (Januar 2012): 77–84. http://dx.doi.org/10.2106/jbjs.j.00918.

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Nguyen, Phi Le, Thanh Hung Nguyen und Kien Nguyen. „A Path-Length Efficient, Low-Overhead, Load-Balanced Routing Protocol for Maximum Network Lifetime in Wireless Sensor Networks with Holes“. Sensors 20, Nr. 9 (28.04.2020): 2506. http://dx.doi.org/10.3390/s20092506.

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In wireless sensor networks (WSNs) with holes, designing efficient routing protocols, which prolong the network lifetime, is one of the most critical issues. To this end, this paper proposes a new geographic routing protocol for WSNs named the load Balanced and constant Stretch protocol for bypassing Multiple Holes (i.e., BSMH). In contrast to the existing works in the literature, the design of BSMH simultaneously takes into account the three factors that impacted the network lifetime, including routing path length, control packet overhead, and load balance among the nodes. Moreover, BSMH aims at minimizing the routing path length and the control overhead, while maximizing the load balance. We theoretically prove the efficiency of BSMH and extensively evaluate BSMH against the state-of-the-art protocols. The evaluation results show that the proposed protocol outperforms the others in various investigated metrics, not only network lifetime, but also routing path stretch, load balance, and control overhead. Specifically, BSMH prolongs the network lifetime by 30 % compared to the existing protocols while guaranteeing that the routing path stretch is under 1.3 .

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Padmarasan, M., C. T. Manikandan, N. Karthikeyan, L. Jayaprakash und C. S. Ajin Sekhar. „A Novel Analysis of Improving Displacement Factor Using IVDFC in Distribution Systems“. International Journal of Advances in Applied Sciences 6, Nr. 3 (01.09.2017): 193. http://dx.doi.org/10.11591/ijaas.v6.i3.pp193-202.

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In this paper discuss the new approach for improving displacement factor using an Interline Dynamic Voltage Restoring and Displacement Factor Controlling Device (IVDFC) in a distribution system. An Interline Dynamic Voltage Restorer (IDVR) is perpetually engaged in distribution systems to mitigate voltage sag/swell problems. An IDVR simply consists of numerous dynamic voltage restorers (DVRs) sharing a common dc link connecting independent feeders to safe electric power to critical loads. The IDVR is operated that it hold the voltage across the critical load bus terminals constant at system nominal frequency irrespective of the changes occurring in source voltages frequency. While one of the DVRs compensates for the local voltage sag in its feeder, the other DVRs reload the common dc-link voltage. For normal voltage levels, the DVRs should be bypassed. Instead of bypassing the DVRs in normal conditions, this paper proposes operating the DVRs, if needed, to improve the displacement factor (DF) of one of the involved feeders. DF improvement can be achieved via active and reactive power exchange (PQ sharing) between different feeders. To successfully apply this concept, several constraints are addressed throughout the paper. The simulation model for this system is developed using MATLAB which is shown that the voltage across the critical load is regulated completely.

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Mattsson, Ann, Glen Nivert und Mari Heinonen. „Direct precipitation on demand at large Scandinavian WWTPs reduces the effluent phosphorus load“. Water Science and Technology 65, Nr. 12 (01.06.2012): 2106–11. http://dx.doi.org/10.2166/wst.2012.126.

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On demand use of direct precipitation of wastewater has been successfully implemented at several large Scandinavian wastewater treatment plants (WWTPs) as a cost-efficient method of treating wastewater bypassing secondary treatment. During wet weather situations or when the capacity of secondary treatment is reduced excess wastewater can be treated through efficient direct precipitation. This increases the total capacity of the WWTP to remove phosphorus during these periods. This treatment strategy allows the WWTPs to meet stringent effluent phosphorus limits without extending secondary treatment of the main plant, despite high wet weather flows. The gain in terms of reduced phosphorus emissions varies depending on local conditions such as climate, collection system and secondary treatment capacity. It also varies from year to year depending on the weather and reductions of capacity due to planned refurbishing or unplanned breakdown of equipment. Operating chemical precipitation on demand has proved to contain challenges to operation and organisation of the WWTP. These challenges include logistics of start-up, training of staff and maintaining the system between occasions of operation. Sufficient up-stream storage capacity, reliable weather forecasts and good contracts with suppliers of chemicals are keys of success.

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P. Hassan, Mohamed, Abdullah Saad Mahmud, A. S. M. Rafie und Rizal Zahari. „Alternative Numerical Validation Methodology for Short-Term Development Projects“. Applied Mechanics and Materials 564 (Juni 2014): 638–43. http://dx.doi.org/10.4028/www.scientific.net/amm.564.638.

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Virtual prototyping has been increasingly taking over the process of sole physical tests. Companies are reporting up to 80% reduction in errors when using virtual tests through the design process. Conventional numerical validation methodology however, is not as beneficial for short-term projects because any new numerical scenario has to be validated before being used. Although during the conceptual stage, relative values can be sufficient. The alternative methodology proposed also uses realistic loads. It comprise applying these loads on a functioning structure to verify them. The modified version of the structure is then relatively validated by being tested under these verified loads. Thus, bypassing the physical tests requirement. Aerodynamic loads are acquired from simulating the Gulfstream IV-SP forward fuselage during climbing, cruising and landing. Mechanical loads are acquired from estimating structural weight and impact load during landing. In total, three finite element models were created. Autodesk softwares were used to perform CFD and FEA. Only greater loads were applied during FEA. Results simplified neglected cruising data for having lowest values. Comparing estimated weights of functional and modified structures showed a possible 15% weight savings. While the FEA results showed a promising 45% less inquired stress within the modified structure.

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Mehr Quellen

Dissertationen zum Thema "Load bypassing"

Vávra, Jan. „Grafický simulátor superskalárních procesorů“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445476.

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Práce se zabývá implementací simulátoru superskalárního procesoru. Implementace se odvíjí od existujících simulátorů a jejich chybějících částí. Simulátor umí vykonávat instrukční sadu RISC-V, ovšem je umožněno přidání jakékoli RISC instrukční sady. Simulátor má deterministickou predikci skoku. Části procesoru lze upravovat. Součástí je i editor kódu pro danou instrukční sadu.

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Buchteile zum Thema "Load bypassing"

„Anadromous Sturgeons: Habitats, Threats, and Management“. In Anadromous Sturgeons: Habitats, Threats, and Management, herausgegeben von Pierre Nellis, Simon Senneville, Jean Munro, Georges Drapeau, Daniel Hatin, Gaston Desrosiers und FranÃ§ois J. Saucier. American Fisheries Society, 2007. http://dx.doi.org/10.47886/9781888569919.ch12.

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<em>Abstract.</em>â€”The short- and long-term impacts of the annual disposal of dredged sediment within Atlantic sturgeon <em>Acipenser oxyrinchus</em> habitat in the St. Lawrence estuary were assessed by simulating sediment transport over 10 years and by sampling sediment and macrobenthos on impacted and control radials. The model applied bed load transport functions embedded in a baroclinic hydrodynamic model. The path predicted by the model was validated at its half-way point (5 years) using multibeam sonar images of the seabed as well as qualitative and quantitative sediment analyses. Sediment took more than 1 year to completely clear the disposal site, indicating continuous sand drift along the predicted path. In the first 2 years, the sediment path increased rapidly in length (10 km), bypassing a field of sand dunes and following the deepest depressions (10 m) in the downstream direction. In the middle of its 10-year course (ca 12 km), the sediment track crossed the most important core area used by early juvenile Atlantic sturgeon. Afterward, sediment progression slowed and accumulated in a 15-mdeep channel between islands in the middle of the estuarine transition zone. The impact stations showed a significant reduction in the average biomass of tubificids, the most important food item of juvenile Atlantic sturgeon in the St. Lawrence. Conversely, the number and abundance of epi- and suprabenthic taxa increased. Model and field results suggest that sand drift generated from disposal operations reduces benthic productivity along the modeled path, including critical habitats of early juvenile Atlantic sturgeon. Sand accumulation from dredged spoil that drift in dead current areas are also likely to reduce juvenile sturgeon habitat quality.

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Konferenzberichte zum Thema "Load bypassing"

Kogias, Marios, Rishabh Iyer und Edouard Bugnion. „Bypassing the load balancer without regrets“. In SoCC '20: ACM Symposium on Cloud Computing. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3419111.3421304.

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Trajcevski, G., Fan Zhou, R. Tamassia, B. Avci, P. Scheuermann und A. Khokhar. „Bypassing Holes in Sensor Networks: Load-Balance vs. Latency“. In 2011 IEEE Global Communications Conference (GLOBECOM 2011). IEEE, 2011. http://dx.doi.org/10.1109/glocom.2011.6134431.

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Nguyen, Phi-Le, Yusheng Ji, Nguyen Thanh Trung und Nguyen Thanh Hung. „Constant stretch and load balanced routing protocol for bypassing multiple holes in wireless sensor networks“. In 2017 IEEE 16th International Symposium on Network Computing and Applications (NCA). IEEE, 2017. http://dx.doi.org/10.1109/nca.2017.8171330.

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Park, Joon-Hyuk, Paul Stegall, Damiano Zanotto, Vineet Vashista, Xin Jin und Sunil K. Agrawal. „Design of the Second Spine: A Secondary Pathway to Transfer Loads From the Shoulders to the Pelvis“. In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12795.

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The Second Spine is a vest intended to prevent musculoskeletal injuries caused by heavy backpack loads, while also maintaining the range of motion of the wearer. The vest is formed by multiple segments between the shoulder and a pelvic belt. In normal “off” configuration, the segments are disconnected from each other and the vest is flexible providing full range of motion to the upper body. With the pull of a string in the “on” configuration, the vest becomes semi-rigid creating a secondary pathway to transfer loads between the shoulder and a pelvic belt. The device was evaluated by a subject who walked on a treadmill while carrying a backpack load of 25% of his body weight (BW). Experiment results showed that the semi-rigid vest reduces the force exerted on the shoulders and induces a more erect posture. Muscle activations in the lower limbs indicate that loads were successfully transferred from the shoulders to the waist while bypassing the vertebral column. These results show that the device can be used to mitigate potential risks of musculoskeletal injuries caused from backpack loads.

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Cowell, Luke, Simon Reynolds, Tim Caron und Donghui Zhang. „Demonstration of Bleed Air Recirculation System to Improve Part Load Efficiency of Solar Mars® 100 DLE Industrial Gas Turbine“. In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75876.

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On two-shaft DLE (Dry Low Emissions) gas turbines compressor air is often bled off the combustor housing to control the combustor flame temperature for part load emissions management. The bleed air is typically directed into the exhaust ducting, bypassing the turbine, causing engine efficiency to decrease. A prototype bleed air recirculation system was fitted onto a compressor package in the field that redirects bleed flow from the engine exhaust to the air inlet to raise the air temperature entering the engine. This system is designed to reduce the amount of bleed air required at a given ambient operating condition, while not compromising emissions, to increase part load efficiency. The bleed air recirculation system was designed, built, installed, and tested on a Mars 16000S compressor package at a station in northern Pennsylvania. A control algorithm was developed and validated to control bleed air recirculation so that package durability was not impacted. Over an evaluation period of 12 months, no significant durability issues or degradation were noted. The on-site evaluation indicated that the engine’s heat rate is significantly improved by using bleed air recirculation. The heat rate was reduced by as much as 7% during testing at site with a strong dependency on the engine operating load and ambient temperature. As predicted the best case was demonstrated at 50% load and at colder ambient conditions. The NOx emissions were also improved with bleed air recirculation. In addition, using this system extended the range of low emissions operation to lower loads. No effects on compressor surge or sound emissions were detected.

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Messenger, Andrew, Richard Williams, Grant Ingram, Simon Hogg, Stacie Tibos und Jon Seaton. „A Dynamic Clearance Seal for Steam Turbine Application“. In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43471.

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Effective sealing in turbomachinery reduces the leakage flow bypassing the turbine blades and also reduces the losses where the leakage flow mixes with the primary flow. In general the clearance should be as small as possible but is limited by thermal and mechanical effects which vary with load. In recent years intermittent energy sources, particularly wind and solar, have appeared in greater numbers on the power network. As a consequence conventional power plants need to become more flexible to accommodate renewable energy generation. A sealing technology which can accommodate rapid changes in load and maintain seal performance would be a valuable development. This paper presents a novel seal design for steam turbines. The seal is designed to be capable of maintaining a smaller clearance than that of conventional labyrinth seals whilst allowing for dynamic movement with the rotor. The paper describes the seal concept and the analytic al work undertaken to demonstrate the concept. The seal design has also been tested in test facilities at Durham and the initial experimental results are included. They show that the concept works as intended.

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Karmazin, Alexander, Evgenia Kirillova, Wolfgang Seemann und Pavel Syromyatnikov. „Analysis of Spatial Steady-State Vibrations of a Layered Anisotropic Plate Using the Green’s Functions“. In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-25430.

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Spatial steady-state harmonic vibrations of a layered anisotropic plate excited by the distributed sources are considered. The work is based on the classical methods of the integral Fourier transforms and integral representations of the Green’s functions. In Fourier transform domain, the displacement vector is represented in terms of the Green’s matrix transform and the transform of the surface load vector. The two-dimensional inverse Fourier transform of the displacement vector is computed by reducing double integral to the iterated one with integrating along a contour, which deviates from the real axis while bypassing the real poles, and with subsequent integrating along the wave propagation angle. Three numerical algorithms of computing related iterated integrals are presented. The features of the application of these algorithms for the near- and far-field zones of the source are discussed. All of presented methods are compared for the numerical examples of vibrations on the surface of 24-layer symmetrical composite.

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Foglesong, Tim, Rob Stone und John Parmigiani. „Dynamics Modeling to Inform Design Optimization“. In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34412.

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This paper presents the methods employed in modeling a vibratory conveyor for use in model-based design optimization. The conveyor, essentially a large table whose top oscillates at an angle off of horizontal, uses springs between the drive mechanism and the tabletop to directly apply a sinusoidal excitation. These springs prevent the system from losing response amplitude as load is increased. The manufacturer is having difficulty optimizing performance and reliability in newer designs, and has requested a model-based approach to the design optimization. This study discusses the initial steps taken in modeling the original mechanism design, specifically the dynamic model and experimental determination of the necessary spring constants. The first full iteration of the model starts with low detail and simplified geometry, with a plan to add complexity as needed to improve accuracy. In the initial model, the parallel springs in the tabletop suspension are combined, bypassing the spring mounting geometry, and tested as one large spring. The drive mechanism springs, bars of fiber reinforced plastic (FRP), are more meticulously tested in a tensile testing machine. The resulting spring constants are used in the initial model to calculate the sinusoidal response of the tabletop at any given input frequency. The deflection response per time of the tabletop is then measured and compared to the model. Conclusions detail the initial model’s accuracy and Future Work examines how to bring it in closer agreement with the real machine’s sinusoidal response.

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Chiulli, John A., Timothy A. Conover, Sharmad S. Joshi, Richard S. Figliola und Tain-Yen Hsia. „Experimentally Modeling Patient-Specific Fontan Circulations Including Respiration Effects Using a Mock Circulatory System“. In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53553.

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The Fontan circulation is the result of a series of operations performed on children born with univentricular circulations (1). These congenital heart defects are uniformly fatal if left alone. After birth, an operation is performed to assure that the child receives enough blood flow to the lungs, but not too much in order to avoid pulmonary vascular disease. Once the child reaches 2–4 years of age, the child’s blood vessels are sufficiently large for the Fontan operation. The Fontan operation connects the great systemic veins directly to the pulmonary arteries, bypassing the right ventricle entirely. One method of the Fontan procedure, which is known as the total cavopulmonary connection (TCPC), achieves venous return to the pulmonary circulation without a ventricular power source. The load on the heart is reduced, and these patients can lead a normal life into adulthood; although late complications continue to prevent normal lifespan. One unique feature of the Fontan circulation is reliance of the inferior vena cava (IVC) flow on respiration, and flow reversal in the IVC and hepatic vein during expiratory phase of breathing (2). Hsia et al. (3) suggest that reducing flow reversal in the hepatic vein will improve the outcome of the Fontan operation. The goal of this study is to model experimentally the Fontan circulation for a variety of different patients using an adjustable mock circulatory system, which for the first time includes the influence of respiration.

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Zhao, Chen, Fei Wang, Zhen Lin, Huiyang Zhou und Nanning Zheng. „Selectively GPU Cache Bypassing for Un-Coalesced Loads“. In 2016 IEEE 22nd International Conference on Parallel and Distributed Systems (ICPADS). IEEE, 2016. http://dx.doi.org/10.1109/icpads.2016.0122.

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