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Electricity Consumption and Battery Lifespan Estimation for Transit Electric Buses: Drivetrain Simulations and Electrochemical Modelling
Electricity consumption and battery lifespan estimation for transit electric buses: drivetrain simulations and electrochemical modelling by Ana¨ıssiaFranca B.Eng, University of Victoria, 2015 A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of MASTER OF APPLIED SCIENCE in the Department of Mechanical Engineering c Anaissia Franca, 2018 University of Victoria All rights reserved. This thesis may not be reproduced in whole or in part, by photocopying or other means, without the permission of the author. ii Electricity consumption and battery lifespan estimation for transit electric buses: drivetrain simulations and electrochemical modelling by Ana¨ıssiaFranca B.Eng, University of Victoria, 2015 Supervisory Committee Dr. Curran Crawford, Supervisor (Department of Mechanical Engineering) Dr. Ned Djilali, Supervisor (Department of Mechanical engineering) iii ABSTRACT This thesis presents a battery electric bus energy consumption model (ECONS-M) coupled with an electrochemical battery capacity fade model (CFM). The underlying goals of the project were to develop analytical tools to support the integration of battery electric buses. ECONS-M projects the operating costs of electric bus and the potential emission reductions compared to diesel vehicles for a chosen transit route. CFM aims to predict the battery pack lifetime expected under the specific driving conditions of the route. A case study was run for a transit route in Victoria, BC chosen as a candidate to deploy a 2013 BYD electric bus. The novelty of this work mainly lays in its application to battery electric buses, as well as in the coupling of the ECONS-M and the electrochemical model to predict how long the batteries can last if the electric bus is deployed on a specific transit route everyday. -
Porting a Window Manager from Xlib to XCB
Porting a Window Manager from Xlib to XCB Arnaud Fontaine (08090091) 16 May 2008 Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version pub- lished by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". Contents List of figures i List of listings ii Introduction 1 1 Backgrounds and Motivations 2 2 X Window System (X11) 6 2.1 Introduction . .6 2.2 History . .6 2.3 X Window Protocol . .7 2.3.1 Introduction . .7 2.3.2 Protocol overview . .8 2.3.3 Identifiers of resources . 10 2.3.4 Atoms . 10 2.3.5 Windows . 12 2.3.6 Pixmaps . 14 2.3.7 Events . 14 2.3.8 Keyboard and pointer . 15 2.3.9 Extensions . 17 2.4 X protocol client libraries . 18 2.4.1 Xlib . 18 2.4.1.1 Introduction . 18 2.4.1.2 Data types and functions . 18 2.4.1.3 Pros . 19 2.4.1.4 Cons . 19 2.4.1.5 Example . 20 2.4.2 XCB . 20 2.4.2.1 Introduction . 20 2.4.2.2 Data types and functions . 21 2.4.2.3 xcb-util library . 22 2.4.2.4 Pros . 22 2.4.2.5 Cons . 23 2.4.2.6 Example . 23 2.4.3 Xlib/XCB round-trip performance comparison . -
Dubai [Metro]Polis: Infrastructural Landscapes and Urban Utopia
Dubai [Metro]polis: Infrastructural Landscapes and Urban Utopia When Dubai Metro was launched in 2009, it became a new catalyst for urban change but also a modern tool to interact with the city - providing a visual experience and an unprecedented perception of moving in space and time, almost at the edge between the imaginary and the real. By drawing on the traditional association between train, perception and the city we argue that the design and planning of Dubai Metro is intended as a signifier of modernity for the Gulf region, with its futuristic designs and in the context of the local socio-cultural associations. NADIA MOUNAJJED INTRODUCTION Abu Dhabi University For the last four decades, Dubai epitomized a model for post-oil Gulf cities and positioned itself as a subject for visionary thinking and urban experimentation. PAOLO CARATELLI During the years preceding 2008, Dubai became almost a site of utopia - evoking Abu Dhabi University a long tradition of prolific visionary thinking about the city – particularly 1970s utopian projects. Today skyscrapers, gated communities, man-made islands, iconic buildings and long extended waterfronts, dominate the cityscape. Until now, most of the projects are built organically within a fragmented urban order, often coexisting in isolation within a surrounding incoherence. When inaugu- rated in 2009, Dubai Metro marked the beginning of a new association between urbanity, mobility and modernity. It marked the start of a new era for urban mass transit in the Arabian Peninsula and is now perceived as an icon of the emirate’s modern urbanity (Ramos, 2010, Decker, 2009, Billing, n. -
Financial Analysis of Battery Electric Transit Buses (PDF)
Financial Analysis of Battery Electric Transit Buses Caley Johnson, Erin Nobler, Leslie Eudy, and Matthew Jeffers National Renewable Energy Laboratory NREL is a national laboratory of the U.S. Department of Energy Technical Report Office of Energy Efficiency & Renewable Energy NREL/TP-5400-74832 Operated by the Alliance for Sustainable Energy, LLC June 2020 This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Contract No. DE-AC36-08GO28308 Financial Analysis of Battery Electric Transit Buses Caley Johnson, Erin Nobler, Leslie Eudy, and Matthew Jeffers National Renewable Energy Laboratory Suggested Citation Johnson, Caley, Erin Nobler, Leslie Eudy, and Matthew Jeffers. 2020. Financial Analysis of Battery Electric Transit Buses. Golden, CO: National Renewable Energy Laboratory. NREL/TP-5400-74832. https://www.nrel.gov/docs/fy20osti/74832.pdf NREL is a national laboratory of the U.S. Department of Energy Technical Report Office of Energy Efficiency & Renewable Energy NREL/TP-5400-74832 Operated by the Alliance for Sustainable Energy, LLC June 2020 This report is available at no cost from the National Renewable Energy National Renewable Energy Laboratory Laboratory (NREL) at www.nrel.gov/publications. 15013 Denver West Parkway Golden, CO 80401 Contract No. DE-AC36-08GO28308 303-275-3000 • www.nrel.gov NOTICE This work was authored by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding provided by the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Vehicle Technologies Office. -
Transit Architecture for Growing Cities
COMMUNICATIVE DESIGN: TRANSIT ARCHITECTURE FOR GROWING CITIES A Thesis presented to the Faculty of California Polytechnic State University, San Luis Obispo In Partial Fulfillment of the Requirements for the Degree Master of Science in Architecture by James Derek Holloway June 2014 © 2014 James Derek Holloway ALL RIGHTS RESERVED ii COMMITTEE MEMBERSHIP TITLE: Communicative Design: Transit Architecture for Growing Cities AUTHOR: James Derek Holloway DATE SUBMITTED: June 2014 COMMITTEE CHAIR: Umut Toker, Ph.D. Associate Professor of City and Regional Planning COMMITTEE MEMBER: Mark Cabrinha, Ph.D. Associate Professor of Architecture COMMITTEE MEMBER: Kevin Dong, SE Professor of Architectural Engineering iii ABSTRACT Communicative Design: Transit Architecture for Growing Cities James Derek Holloway Increasing urban populations are currently magnifying the importance of the transit station in the context of its surrounding systems. In order to prepare our cities for higher population densities in the future, an examination of the relationships between station form and individual experience may lead to the identification of specific design objectives with implications for increased pub- lic transit riderships. Data is collected through research on sensory perception in architecture, spatial organization, and connectivity between an individual structure and it’s local surroundings. Site-specific observations and information describing current professional practices are used to determine prominent design objectives for future implementation. Keywords: -
How-To Gnome-Look Guide
HHOOWW--TTOO Written by David D Lowe GGNNOOMMEE--LLOOOOKK GGUUIIDDEE hen I first joined the harddisk, say, ~/Pictures/Wallpapers. right-clicking on your desktop Ubuntu community, I and selecting the appropriate You may have noticed that gnome- button (you know which one!). Wwas extremely look.org separates wallpapers into impressed with the amount of different categories, according to the customization Ubuntu had to size of the wallpaper in pixels. For Don't let acronyms intimidate offer. People posted impressive the best quality, you want this to you; you don't have to know screenshots, and mentioned the match your screen resolution. If you what the letters stand for to themes they were using. They don't know what your screen know what it is. Basically, GTK is soon led me to gnome-look.org, resolution is, click System > the system GNOME uses to the number one place for GNOME Preferences > Screen Resolution. display things like buttons and visual customization. The However, Ubuntu stretches controls. GNOME is Ubuntu's screenshots there looked just as wallpapers quite nicely if you picked default desktop environment. I impressive, but I was very the wrong size, so you needn't fret will only be dealing with GNOME confused as to what the headings about it. on the sidebar meant, and I had customization here--sorry no idea how to use the files I SVG is a special image format that Kubuntu and Xubuntu folks! downloaded. Hopefully, this guide doesn't use pixels; it uses shapes Gnome-look.org distinguishes will help you learn what I found called vectors, which means you can between two versions of GTK: out the slow way. -
Summary of Available Zero-Emission Technologies and Funding Opportunities
Summary of Available Zero-Emission Technologies and Funding Opportunities Prepared by the Bay Area Air Quality Management District June 2018 Summary of Available Zero-Emission Technologies and Funding Opportunities: June 2018 Table of Contents Technology Readiness Level of Zero-Emission Technologies ................................................................3 Buses ......................................................................................................................................................... 3 Light Duty Vehicles .................................................................................................................................... 4 Medium- and Heavy-Duty Trucks ............................................................................................................. 4 Transport Refrigeration Units ................................................................................................................... 5 Mobile Cargo Handling Equipment ........................................................................................................... 5 Construction & Earthmoving Equipment .................................................................................................. 6 Locomotives .............................................................................................................................................. 6 Ocean-Going Vessels ................................................................................................................................ -
A Simplified Graphics System Based on Direct Rendering Manager System
J. lnf. Commun. Converg. Eng. 16(2): 125-129, Jun. 2018 Regular paper A Simplified Graphics System Based on Direct Rendering Manager System Nakhoon Baek* , Member, KIICE School of Computer Science and Engineering, Kyungpook National University, Daegu 41566, Korea Abstract In the field of computer graphics, rendering speed is one of the most important factors. Contemporary rendering is performed using 3D graphics systems with windowing system support. Since typical graphics systems, including OpenGL and the DirectX library, focus on the variety of graphics rendering features, the rendering process itself consists of many complicated operations. In contrast, early computer systems used direct manipulation of computer graphics hardware, and achieved simple and efficient graphics handling operations. We suggest an alternative method of accelerated 2D and 3D graphics output, based on directly accessing modern GPU hardware using the direct rendering manager (DRM) system. On the basis of this DRM support, we exchange the graphics instructions and graphics data directly, and achieve better performance than full 3D graphics systems. We present a prototype system for providing a set of simple 2D and 3D graphics primitives. Experimental results and their screen shots are included. Index Terms: Direct rendering manager, Efficient handling, Graphics acceleration, Light-weight implementation, Prototype system I. INTRODUCTION Rendering speed is one of the most important factors for 3D graphics application programs. Typical present-day graph- After graphics output devices became publicly available, a ics programs need to be able to handle very large quantities large number of graphics applications were developed for a of graphics data. The larger the data size, and the more sen- broad spectrum of uses including computer animations, com- sitive to the rendering speed, the better the speed-up that can puter games, user experiences, and human-computer inter- be achieved, even for minor aspects of the graphics pipeline. -
China Autos Asia China Automobiles & Components
Deutsche Bank Markets Research Industry Date 18 May 2016 China Autos Asia China Automobiles & Components Vincent Ha, CFA Fei Sun, CFA Research Analyst Research Analyst (+852 ) 2203 6247 (+852 ) 2203 6130 [email protected] [email protected] F.I.T.T. for investors What you should know about China's new energy vehicle (NEV) market Many players, but only a few are making meaningful earnings contributions One can question China’s target to put 5m New Energy Vehicles on the road by 2020, or its ambition to prove itself a technology leader in the field, but the surge in demand with 171k vehicles sold in 4Q15 cannot be denied. Policy imperatives and government support could ensure three-fold volume growth by 2020, which would make China half of this developing global market. New entrants are proliferating, with few clear winners as yet, but we conclude that Yutong and BYD have the scale of NEV sales today to support Buy ratings. ________________________________________________________________________________________________________________ Deutsche Bank AG/Hong Kong Deutsche Bank does and seeks to do business with companies covered in its research reports. Thus, investors should be aware that the firm may have a conflict of interest that could affect the objectivity of this report. Investors should consider this report as only a single factor in making their investment decision. DISCLOSURES AND ANALYST CERTIFICATIONS ARE LOCATED IN APPENDIX 1. MCI (P) 057/04/2016. Deutsche Bank Markets Research Asia Industry Date China 18 May 2016 Automobiles & China -
Linux Graphics Meets the ARM Ecosystem
Linux Graphics Meets the ARM Ecosystem Jesse Barker <[email protected]> April 12, 2011 Find us here on the Linaro wiki Overview ● The Linux Desktop ● The ARM Linux Desktop ● The Subset Approach ● Examples ● Questions ● What's Next The Desktop Window system ● Display management ● Resource management ● Session management ● Event handling ● Application programming interface Protocol Decode Device Independent X (DIX) DRI EXA DDX User space libdrm evdev DRM KMS Kernel GEM/TTM space Input H/W CPU GPU DC Memory Protocol Encode DRI GLX libdrm libX* Core Application Logic User space DRM KMS Kernel GEM/TTM space GPU DC CPU Memory Toolkits/Frameworks ● Create abstraction layer from the underlying window system. ● Provide uniform look-and-feel across platforms. ● Applications don't have to care which system they are running on. ● New backend to the framework adds a new supported platform for a whole bundle of applications. Bells and Whistles ● OpenGL ● Video ● Audio ● Compositing window managers ● Animation The ARM Desktop What's the difference? ● Most differences are “physical” ● Screen size and resolution ● Unified memory pool ● Power vs. raw performance ● Some API (not necessarily, though) ● Window system interfaces ● Rendering interfaces The Subset Approach ● OpenGL ES 2.0 is explicitly defined as a subset of OpenGL 2.1. ● Both have diverged since the original definition. ● Minimize specialized code (e.g., window system interfaces). The “big-ticket” items ● Immediate mode ● Fixed-function vertex processing ● Fixed-function fragment processing ● EGL vs. GLX Examples ● glmark2 ● cairo-gles ● compiz glmark2 ● Based upon opensource glmark by Ben Smith. ● Uses 3D Studio Max for model content. ● Uses SDL for window system abstraction. -
Beyond Eye Candy
COVER STORY Xgl and Compiz An OpenGL-accelerated desktop with Xgl and Compiz BEYOND EYE CANDY www.sxc.hu A member of Suse’s X11 team delivers an insider’s look at Xgl. agement must work hand in hand, we can expect to see more compositing BY MATTHIAS HOPF window managers in the future with the ability to merge both processes. ac fans were ecstatic when The Render extension adds new basic Another important X server compo- Apple introduced the Quartz primitives for displaying images and nent that desperately needs reworking is MExtreme [1] graphics interface, polygons, along with a new glyph sys- the hardware acceleration architecture, which accelerated desktop effects using tem for enhanced font displays. This which is responsible for efficient hard- 3D hardware. Microsoft’s Windows Vista particularly reflects the fact that the leg- ware representation of graphic com- with its Aero technology looks to close acy graphics commands, called core re- mands. The previous XAA architecture is this gap with the Mac. In the world of quests, no longer meet the demands built around core requests, and is there- Linux, Xgl [2] now provides a compara- placed on modern toolkits such as Qt fore difficult to extend. The architecture ble and even more advanced technology and GTK. All primitives can now be outlived its usefulness and needs replac- that supports similar effects. linked to data in the framebuffer using ing. The most promising alternatives are Xgl is an X Server by David Revemann Porter-Duff operators [3], thus support- EXA and OpenGL. that uses OpenGL to implement graphics ing the rendering of semitransparent sur- EXA is straightforward and easy to im- output. -
Oracle R Enterprise User's Guide, Release 11.2 for Linux, Solaris, AIX, and Windows E26499-05
Oracle® R Enterprise User's Guide Release 11.2 for Linux, Solaris, AIX, and Windows E26499-05 June 2012 Oracle R Enterprise User's Guide, Release 11.2 for Linux, Solaris, AIX, and Windows E26499-05 Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Primary Author: Margaret Taft Contributing Author: Contributor: This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited. The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing. If this is software or related documentation that is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, the following notice is applicable: U.S. GOVERNMENT RIGHTS Programs, software, databases, and related documentation and technical data delivered to U.S. Government customers are "commercial computer software" or "commercial technical data" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, the use, duplication, disclosure, modification, and adaptation shall be subject to the restrictions and license terms set forth in the applicable Government contract, and, to the extent applicable by the terms of the Government contract, the additional rights set forth in FAR 52.227-19, Commercial Computer Software License (December 2007).