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Utilization of Distributed Generation in Power System Peak Hour Load Shedding Reduction
Get PDFAn approach to utilize Distributed Generation (DG) to minimize the total load shedding by analyzing the power system in Transactive energy framework is proposed. An algorithm to optimize power system in forward and spot markets to maximize an electric utility’s profit by optimizing purchase of power from DG is developed. The proposed algorithm is a multi-objective optimization with the main objective to maximize a utility’s profit by minimizing overall cost of production, load shedding, and purchase of power from distributed generators. This work also proposes a method to price power in forward and spot markets using existing LMP techniques. Transactive accounting has been performed to quantify the consumer payments in both markets. The algorithm is tested in two test systems; a 6-bus system and modified IEEE 14-bus system. The results show that by investing in DG, utility benefits from profit increase, load shedding reduction, and transmission line loading improvement
Detecting Objective-C Malware through Memory Forensics
Get PDFMemory forensics is increasingly used to detect and analyze sophisticated malware. In the last decade, major advances in memory forensics have made analysis of kernel-level malware straightforward. Kernel-level malware has been favored by attackers because it essentially provides complete control over a machine. This has changed recently as operating systems vendors now routinely enforce driving signing and strategies for protecting kernel data, such as Patch Guard, have made userland attacks much more attractive to malware authors.
In this thesis, new techniques for detecting userland malware written in Objective-C on Mac OS X are presented. As the thesis illustrates, Objective-C provides a rich set of APIs that malware uses to manipulate and steal data and to perform other malicious activities. The novel memory forensics techniques presented in this thesis deeply examine the state of the Objective-C runtime, identifying a number of suspicious activities, from keystroke logging to pointer swizzling
Oratorio: Esther - For Such a Time As This
Get PDFThis oratorio tells the story of Queen Esther as presented in the Old Testament Book of Esther. Its format includes choruses and solos with an orchestral accompaniment. The main characters in the story are Esther, King Xerxes, Esther’s uncle Mordecai and their antagonist Haman, with occasional insertions by a narrator. In addition to the primary scripture used, there are several inclusions from the Psalms, Song of Songs, and a commentary poem by Wayne Watson highlighting the oratorio’s sub-title, “For Such a Time as This,” which is the overriding textural theme. The orchestration focuses on reed woodwinds, brass, strings, and percussion, including consistent use of the Persian tanbak (bongo type drum). Rhythms are regularly freely used to support the text. Dissonant melodic construction and its resulting harmonic dissonance present a panoply of sound beyond the traditional classical approach of dominant/tonic tonality
Sensitivity Analysis of Synchronous Generators for Real-Time Simulation
Get PDFThe purpose of this thesis is to validate generator models for dynamic studies of power systems using PSS/E (Power System Simulator for Engineering), EMTP (ElectroMagnetic Transient Program), and Hypersim. To thoroughly evaluate the behavior of a power system in the three specified software packages, it is necessary to have an accurate model for the power system, especially the generator which is of interest. The effect of generator modeling on system response under normal conditions and under faulted conditions is investigated in this work. A methodology based on sensitivity analysis of generator model parameters is proposed aiming to homogenize the behavior of the same power system that is modeled in three software packages. Standard IEEE 14-Bus system is used as a test case for this investigation. Necessary changes in the exciter parameters are made using the proposed methodology so that the system behaves identical across all three software platforms
Test Plan for Real-Time Modeling & Simulation of Single Pole Switching Relays
Get PDFA real-time simulator (RTS) with digital and analog input/output modules is used to conduct hardware-in-the-loop simulations to evaluate performance of power system equipment such as protective relays by exposing the equipment to the simulated realistic operating conditions. This work investigates the use of RTS to test relays with single-pole-switching (SPS) feature. Single-pole switching can cause misoperations due to fault arc during reclosing of the breakers. Through this investigation, a test procedure appropriate for the testing SPS relays has been developed. The test procedure includes power system modeling for real time simulation, relay test setup, and test plan. HYPERSIM real-time simulator was used to model an actual power system. Transmission lines, three-winding transformers, and induction motor were modeled with actual parameters. Models for fault arc in HYPERSIM real time simulator were developed. Test set-up for evaluating relay performance and wiring drawings for connecting relay in closed-loop to the simulator were developed
The “True American”: William H. Christy and the Rise of the Louisiana Nativist Movement, 1835-1855
Get PDFIn New Orleans during the 1830s, Irish immigration became a source of tension between newly settled Anglo-American elites and the long-established Creole hegemony. Out of this tension, in 1835 Anglo-American elites established the Louisiana Native American Association (LNAA) to block Irish immigrants from gaining citizenship and, ultimately, the right to vote. The Whig Party, whom most Louisiana Anglo-Americans supported, promoted nativism to prevent naturalized Irish from voting Democrat, the preferred party of the Creoles. This study will argue that the LNAA, under the leadership of William H. Christy, was not merely a reaction to increased Irish immigration, but was also a strategy used by the Louisiana Whig Party to gain dominion over state politics. In the end, this strategy did more harm than good to the Whigs as the nativist movement led to a fatal split within the party
The History of Public Education in New Orleans Still Matters
Get PDFTen years after the flood waters from negligently constructed federal levees inundated New Orleans, public education reformers have unhitched their narrative from the pre-Katrina history of the Crescent City. They cleverly placed the blame for the condition of the schools on the backs of the teachers--and their union. The reformers contend that New Orleans was a “blank sheet of paper” upon which they put in place a successful system of charter schools. Perhaps the reference to the “blank sheet of paper” makes more sense as an effort to paper-over a long and painful history that includes the lingering effects of white supremacy
You Could Get Killed Any Day in Hollygrove: A Qualitative Study of Neighborhood-Level Homicide
Get PDFNew Orleans experienced elevated homicide rates throughout the 30 years between 1985 and 2015. The city’s homicides were especially prominent in socioeconomically disadvantaged communities. This study explored the lived experiences of residents from one such neighborhood, Hollygrove. Using qualitative methods of individual interviews, focus groups, and participant observation, the study explored homicide through three prominent theoretical lenses, Social Disorganization Theory, Subcultural theories, and Institutional Anomie Theory, to better understand the conditions in a high-homicide neighborhood that help to explain neighborhood-level violence. While existing theories of homicide causation have taken a predominately quantitative approach that compare high-homicide neighborhoods, I took an ethnographic approach informed by a social constructivist paradigm to test existing theories against the lived experiences of those whose daily lives were impacted by neighborhood-level homicide in a single community. Interviews were conducted with neighborhood residents, community leaders, neighborhood politicians, and police officials.
The data indicated three conditions connected to high- or low-homicide risk in the community. The neighborhood’s values-orientation moved between subcultural values and prosocial values. Structural conditions in the community shifted between marginalization and enhanced social capital. Finally, neighborhood boundaries were found to vacillate between porous and rigidly defensive. Each of these conditions impacted the neighborhood’s ability to enact collective efficacy and to create a milieu that either resisted or enhanced the likelihood of homicide. While none of the existing theories was sufficient to explain neighborhood homicide, elements of each were present in the data