03328nam 2200661Ia 450 991045683320332120200520144314.01-282-36075-297866123607560-520-94248-510.1525/9780520942486(CKB)2430000000010971(EBL)837248(OCoLC)773564978(SSID)ssj0000290284(PQKBManifestationID)11214639(PQKBTitleCode)TC0000290284(PQKBWorkID)10404225(PQKB)11403801(MiAaPQ)EBC837248(OCoLC)667013808(MdBmJHUP)muse30980(DE-B1597)520329(DE-B1597)9780520942486(Au-PeEL)EBL837248(CaPaEBR)ebr10675746(CaONFJC)MIL236075(EXLCZ)99243000000001097120080619d2009 ub 0engurcn|||||||||txtccrBoth sides now[electronic resource] the story of school desegregation's graduates /Amy Stuart Wells ... [et al.]Berkeley University of California Pressc20091 online resource (369 p.)"George Gund Foundation imprint in African American studies"--P. [ii].0-520-25678-6 0-520-25677-8 Includes bibliographical references (p. 321-337) and index.Front matter --Contents --Foreword --Acknowledgments --1. The Class of 1980 --2. Six Desegregated High Schools --3. Racially Mixed Schools in a Separate and Unequal Society --4. We're All the Same - Aren't We? --5. Close Together but Still Apart: Friendships across Race Only Went So Far --6. Why It Was Worth It --7. More Diverse Than My Current Life --8. But That Was a Different Time --9. The Souls of Desegregated Folk --Notes --IndexThis is the untold story of a generation that experienced one of the most extraordinary chapters in our nation's history-school desegregation. Many have attempted to define desegregation, which peaked in the late 1970's, as either a success or a failure; surprisingly few have examined the experiences of the students who lived though it. Featuring the voices of blacks, whites, and Latinos who graduated in 1980 from racially diverse schools, Both Sides Now offers a powerful firsthand account of how desegregation affected students-during high school and later in life. Their stories, set in a rich social and historical context, underscore the manifold benefits of school desegregation while providing an essential perspective on the current backlash against it.School integrationUnited StatesCase studiesMinority high school studentsUnited StatesCase studiesElectronic books.School integrationMinority high school students379.2/630973Wells Amy, authttp://id.loc.gov/vocabulary/relators/aut1043518Wells Amy Stuart1961-1043519MiAaPQMiAaPQMiAaPQBOOK9910456833203321Both sides now2468546UNINA04066nam 22006015 450 991098349000332120250806173813.0981-9757-38-X10.1007/978-981-97-5738-1(CKB)36959198100041(MiAaPQ)EBC31826314(Au-PeEL)EBL31826314(DE-He213)978-981-97-5738-1(OCoLC)1478697774(EXLCZ)993695919810004120241210d2025 u| 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierAnalysis and Suppression of Low-Frequency Oscillation Between EMUs and Traction Networks in High-speed Railways /by Zhigang Liu, Siqi Wu, Xiangyu Meng1st ed. 2025.Singapore :Springer Nature Singapore :Imprint: Springer,2025.1 online resource (322 pages)Advances in High-speed Rail Technology,2363-5029981-9757-37-1 Overview of Low-Frequency Oscillation in Railways Vehicle-Grid Systems -- Vehicle-Grid System Model in Time Domain and Oscillation Mechanism Analysis -- Vehicle-grid System Model in Frequency Domain and Oscillation Mechanism Analysis -- Impedance Model Under Unified Framework and Their Relations -- Suppression of Low-frequency Oscillation Based on Model Predictive Control -- Suppression of Low-frequency Oscillation Based on Passivity-based Control -- Suppression of Low-frequency Oscillation Based on Fuzzy Control -- Comparative Analysis for the Traction Converters in Vehicle-Grid System of High-speed Railway -- Dynamic Power Compensation and its Suppression Mechanism.This book focuses on the low-frequency oscillation between EMUs and traction networks in high-speed Railways. As the power source of high-speed trains, the traction network's power performance directly affects the safe and stable operation of the train. However, the low-frequency oscillation between EMUs and traction networks will fluctuate voltage or current, resulting in poor power quality, electrical device failure, and even interruption of traction power. Therefore, it is important to reveal the mechanism of low-frequency oscillation and propose suppression strategies. This book systematically shows the newest research results of analysis and suppression of low-frequency oscillation between EMUs and traction networks in high-speed railways, especially in the modeling methods of vehicle-grid systems and suppression strategies for low-frequency oscillation. These methods or strategies can provide important references and help for researchers, scholars, and engineers on traction power technology in high-speed railways. The main contents include the overview of low-frequency oscillation between EMUs and traction networks, the introduction of main modeling methods for vehicle-grid systems, especially single-phase rectifiers, the line-side converter control algorithms in vehicles for the suppression of low-frequency oscillation, the traction substation power compensation strategies for the suppression of low-frequency oscillation, etc.Advances in High-speed Rail Technology,2363-5029Railroad engineeringPower electronicsSolid state physicsRail VehiclesPower ElectronicsElectronic DevicesRailroad engineering.Power electronics.Solid state physics.Rail Vehicles.Power Electronics.Electronic Devices.625Liu Zhigang739891Wu Siqi1784891Meng Xiangyu1784892MiAaPQMiAaPQMiAaPQBOOK9910983490003321Analysis and Suppression of Low-Frequency Oscillation Between EMUs and Traction Networks in High-Speed Railways4316520UNINA