In this thesis, a method was developed to evaluate the impact of bidirectional electric vehicle (EV) charging on power system reliability using Synergi Electric software. Load profiles, EV availability, EV state-of-charge (SOC) were important factors considered in this study. The analysis in this study is based on local and interregional vehicle-to-grid (V2G) implementation at different load points in the system. In general, local V2G implementation is observed to be more effective in improving system reliability over interregional V2G power flow. System Average Interruption Duration Index (SAIDI) and System Average Interruption Frequency Index (SAIFI) improvements were observed to increase with increasing SOC but are less progressive between higher SOCs. Based on the simulation results, the method proves to be sufficient in calculating SAIDI and SAIFI reliability indices as the simulation results are corroborated with theory.

Yes / In this paper two novel antennas, suitable for access and backhaul links, are designed, fabricated and tested for a Relay Station in a WiMAX wireless network. A single modi¯ed E-shaped patch antenna is described, presenting 10 dB gain over 12.4% bandwidth. This antenna element is used for the design of a 4 £ 4 planar array which provides experimental gain of 21.2 dB. The antenna system on the Relay Station operates at 3.4 GHz and includes one single antenna element for access link realization and an antenna array for the backhaul link realization. These antennas are installed in two con¯guration arrangements and tested in terms of their radiation performances and coupling e®ects. The simulated and measured results are quite satisfactory and in good agreement at which the maximum coupling between the access and backhaul antennas is found below ¡25 dB for all tested cases.

This study presents an overall history of WRR, the first municipally owned radio station and describes the problems it encountered by competing in a commercial Dallas market. The study marks the establishment of WRR in 1920 as a signal transmitter for the Dallas Fire Department, its transition to an entertainment station, the addition of WRR-FM, retirement of long-time Station Manager Durward J. Tucker, heavy financial losses, public complaints, format changes, and the sale of the station. A final chapter provides a summary and recommendations for further study, and concludes that WRR should have left the commercial market when its revenue and ratings began to decline.

The promotion of Electric Vehicles (EV) has become a key measure of the governments to reduce greenhouse gas emissions. However, range anxiety is a big barrier for drivers to choose EVs over traditional vehicles. Installing more charging stations in appropriate locations can relieve EV drivers’ range anxiety. To help decide the location and number of public charging stations, we propose two optimization models for two different charging modes - fast and slow charging, which aim at minimizing the total cost while satisfying certain spatial coverage goals. Instead of using discrete points we employ network and polygons to represent charging demands. Importantly, we resolve the partial coverage problem (PCP) by segmenting the geometric objects into smaller ones using Geographic Information System (GIS) functions. We compare the geometric segmentation method (GS) and the complementary partial coverage method (CP) developed by Murray (2005) to solve the PCP. After applying the models to Greater Toronto and Hamilton Area (GTHA) and to Downtown Toronto, we show that that the proposed models are practical and effective in determining the locations and number of required charging stations. Moreover, comparison of the two methods shows that GS can fully eliminate PCP and provide much more accurate result than CP. / Thesis / Master of Science (MSc)

Projektet tog sin början i städers mindre konventionella infrastruktur, och fram växte en fascination för alternativa sätt att förflytta sig. Många transportsystem visades, historiskt, först upp på olika världsutställningar och hamnade snabbt i gränslandet mellan underhållande åkattraktion och del av en stads kollektivtrafiksystem. Gemensamt för de många okonventionella färdsystemen är viljan att på ett bättre sätt överbrygga en fysisk barriär, exempelvis vatten, infrastruktur eller komplex topografi. De är varken de billigaste, enklaste eller snabbaste lösningarna, men de är system som tar dig från en plats till en annan, på ett minnesvärt sätt, och med platsens förutsättningar och utmaningar som generator. Projektet resulterade i ett förslag på hur man kan skapa en fantastisk upplevelse, som fått födas ur en strävan efter att lättare ta sig mellan olika platser. Med inspiration från olika referenser, skapades på Kvarnholmen ett nytt transportsystem, vilket bidrar med oväntade kvaliteter på en plats som tål en ny stark personlighet, en plats som redan präglas av nostalgi. Johanna Lundqvist / This project began with an interest in less conventional infrastructure solutions, from which a fascination for alternative ways to travel emerged. Many transportation systems were, historically, first shown in different world fairs and quickly ended up on the borderline between fun amusement attraction and a part of a city’s public transport system. What many of these unconventional transport systems have in common is the desire to, in better ways, overcome physical barriers, for example water, infrastructure or complex topography. Often they are not the cheapest, simplest or fastest options, but rather systems that take you from one place to another, in a memorable way, and with the preconditions and challenges of the space as a generator. The project resulted in a proposal for how to create a journey to remember, a journey which has been born out of an aspiration to overcome a physical barrier. With inspiration from collected references, a new transport system was placed on Kvarnholmen, Stockholm, which adds unexpected qualities to a place that can handle a new, strong character, a place that is already characterised by nostalgia. Johanna Lundqvist

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This report summarizes the design of a DME (Distance Measuring Equipment) simulator to be used in the testing of an Area Navigation System. The purpose of the simulator is to generate a signal representing an aircraft's distance from a ground station. This information is in the form of two pulses whose separation represents that elapsed transmission time for an aircraft to receive a reply from the ground station to an interrogation by the aircraft. The pulse spacing must be selectable as fixed distances for static tests and as distance changing at a constant rate to simulate flying to or from the station for dynamic testing. Thumbwheel switches are used to input fixed distances and up/down counters provide inbound and outbound range rates. The rate clock is derived from a crystal oscillator whose output is divided down by a programmable, modulo-n, divider to the desired rate/frequency. This input distance information, available in parallel binary coded decimal format, is then converted to the required pulse pair spacing. This is accomplished with presettable down counters clocked by another crystal oscillator whose frequency represents two-way propagation time for radio waves.