Digital Commons Network^™

Noncausal Forward/Backward Two-Pass Iir Digital Filters In Real Time, Adnane Mouffak, Belbachir Mohamed Faouzi

Turkish Journal of Electrical Engineering and Computer Sciences

A novel method for implementing noncausal forward/backward 2-pass recursive digital filters in real time is presented. It is based on a segment-wise block processing scheme without overlapping. Factors that degrade the linearity of the overall system's transfer function are discussed. An analytical condition that corrects the system's linearity is elaborated upon using the state variable approach. A recursive algorithm is developed to compute an implementable condition for real-time filtering. A single first in, first out queue memory is introduced to ensure an organized and continuous data stream into the proposed system. This technique allows real-time, sample-by-sample filtering, and it yields …

A Hybrid Approach For Power Quality Monitoring, Okan Özgönenel, Ümi̇t Kemaletti̇n Terzi̇, Abdesh Khan

Turkish Journal of Electrical Engineering and Computer Sciences

This paper presents a novel hybrid approach for detection of power quality (PQ) disturbances. The proposed hybrid algorithm is based on applications of principle component analysis, discrete wavelet transform, and fast Fourier transform on voltage and current waveforms. The proposed PQ monitoring (PQM) software uses 3-phase voltage and current signals in order to detect possible power disturbances such as voltage sag, flicker, harmonics, transients, DC component, and electromagnetic interference. The test results demonstrate the potential of the proposed hybrid technique for PQM andPQ assessment.

Vibration Analysis Of Base Structure On Sins Using Pzt Actuators, Bin Zheng, Jianfeng Yang

Turkish Journal of Electrical Engineering and Computer Sciences

A steel plate bonded with lead zirconate titanate (PZT) actuators was studied on the basis of finite element methods (FEMs). The damping amplitudes of this plate bonded with PZT actuators were obtained at different locations and under different control conditions by analyzing the distribution of the PZT plate's strain tensor in the first 4 modes. Furthermore, to reduce the unwanted disturbance and mitigate the errors from sensors, a base structure of the missile's strapdown inertial navigation system (SINS) is also proposed. The results show that the vibration control can be enhanced by increasing the number of the PZT actuators bonded. …

Skewed Alpha-Stable Distributions For Modeling And Classification Of Musical Instruments, Mehmet Erdal Özbek, Mehmet Emre Çek, Feri̇t Acar Savaci

Turkish Journal of Electrical Engineering and Computer Sciences

Music information retrieval and particularly musical instrument classification has become a very popular research area for the last few decades. Although in the literature many feature sets have been proposed to represent the musical instrument sounds, there is still need to find a superior feature set to achieve better classification performance. In this paper, we propose to use the parameters of skewed alpha-stable distribution of sub-band wavelet coefficients of musical sounds as features and show the effectiveness of this new feature set for musical instrument classification. We compare the classification performance with the features constructed from the parameters of generalized …

A Pseudo Spot Price Of Electricity Algorithm Applied To Environmental Economic Active Power Dispatch Problem, Celal Yaşar

Turkish Journal of Electrical Engineering and Computer Sciences

In this study, an environmental economic active power dispatch problem is transformed into an optimization problem with a single-objective function by applying the weighted sum method (WSM) and the conic scalarization method (CSM). A pseudo spot price of electricity algorithm (PSPA) is used to solve the transformed problem. This is demonstrated on an example problem, which is a lossy electrical power system having only thermal units The WSM and CSM methods are applied to the example problem, and the weight factor values of these methods is increased from 0 to 1 by a step size of 0.1. For each possible …

Optimal In Vitro Realization Of Pulsatile Coronary Artery Flow Waveforms Using Closed-Loop Feedback Algorithms With Multiple Flow Control Devices, Serdar Yilmaz, Onur Toker, Nurullah Arslan, Herman Sedef

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, we study optimal in vitro realization of pulsatile coronary artery flows using newly proposed closed-loop feedback algorithms with a clearly defined mathematical performance objective, and we compare several flow control device technologies in terms of their ability to generate pulsatile flow signals as accurately as possible. In the literature, there are several published results for in vitro pulsatile flow realization systems. However, most of the proposed systems operate in an open-loop setting and use a single flow control device, and their performance is assessed mostly by graphical means without a clearly defined mathematical performance objective. Furthermore, some …

A Novel Approach For Optimal Allocation Of Distributed Generations Based On Static Voltage Stability Margin, Mohsen Rezaie Estabragh, Mohsen Mohammadian, Mehdi Shafiee

Turkish Journal of Electrical Engineering and Computer Sciences

This paper presents a newly developed approach to find the optimal location of distributed generations (DGs) to improve power system voltage stability margin and reduce losses incorporating the constraints. The loadability limit index is used to assess the static voltage stability security margin, which is associated with the point of voltage collapse limit. Based on this, a toolbox is developed to recognize the loadability margin in power networks. Finally, the mentioned problem is modeled as a nonlinear and multiobjective optimization problem. The proposed method establishes a tradeoff between the security index and power losses in DG placement using the hybrid …

A Novel Motor Speed Calculation Method Using Square Wave Speed Sensor Signals Via Fast Fourier Transform, Hayri̇ Arabaci, Osman Bi̇lgi̇n

Turkish Journal of Electrical Engineering and Computer Sciences

This paper presents a novel motor speed measurement method and experimental results using the fast Fourier transform (FFT). Motor speed is obtained using the square wave output signal of a speed sensor. In the proposed method, the speed can be measured in a wide range, and transient speed changes can also be clearly observed. The experiments were conducted during start-up and in steady state. The sampled speed data were transformed to frequency spectrums using the FFT. The frequency, which corresponds to the maximum amplitude in the spectrum, was used to calculate the motor speed. The test results show that the …

Voltage Stability Via Energy Function Analysis On Reduced Order Model Of Power System, Ahmet Çi̇fci̇, Yilmaz Uyaroğlu, Mehmet Ali̇ Yalçin

Turkish Journal of Electrical Engineering and Computer Sciences

A power system is a typical nonlinear dynamical system and voltage stability is an important subject of power system stability. This paper describes the use of the variable gradient method in a reduced order model of a single-machine infinite-bus power system. Additionally, the system's Lyapunov (energy) function is created and thus the system's energy level changes' effects on the system's stability are shown using the MACSYMA program. The Lyapunov function allows the determination of stability for nonlinear systems without the need to find exact solutions.

Analysis And Characterization Of Longitudinal Flux Single-Sided Linear Switched Reluctance Machines, Lenin Chokkalingam, Arumugam Rengasamy

Turkish Journal of Electrical Engineering and Computer Sciences

Linear switched reluctance motors (LSRMs) have recently gained more popularity for propulsion drives. This paper contributes a certain design improvement to reduce the force ripple in LSRMs. By affixing a pole cap in the stator pole, the target is achieved. Finite element analysis has been carried out to predict the performance of the basic and proposed structures. Motor performances for different load conditions are simulated. The application of fast Fourier transform has been utilized to envisage the vibration frequencies. The experimental results are well correlated with the predicted results.

Relationship Of Self-Concept, Depression, Academic Estimation, And Online Social Networking In Adolescents, Jaime Rebekah Long

Graduate Student Theses, Dissertations, & Professional Papers

The present study investigated the relationship between academic self-concept, academic outcome confidence, and academic estimation in depressed and non-depressed adolescents, with a focus on gender differences. The study also included exploratory questions on online social networking (OSN) usage. Participants (N = 66) were 9th and 10th grade students from one high school, with 40 females and 26 males. Academic self-confidence and outcome confidence were measured with the Student Self-Concept Scale (SSCS) and depressive symptoms were measured with the Center for Epidemiological Studies’ Depression Scale for Children (CES-DC). Standardized test scores and grade point average (GPA) for each student were collected …

Off Risking: Offender Risk Assessment And The Correctional Assessment And Intervention System, Eden Heeder

Graduate Student Theses, Dissertations, & Professional Papers

In 2010 the State of Montana Department of Corrections (DOC) licensed the Correctional Assessment and Intervention System (CAIS) to address the high rate of recidivism among Co-occurring and Native American offenders. Montana DOC reported a significantly lower rate of revocation among the offenders assessed by the CAIS. Quantitative and Qualitative analyses were conducted to determine what aspects of the program facilitated the lower rates of revocation. Results of this analysis determined that several factors acting in concert contributed to the lower rates of revocation with the most meaningful contribution being that of rapport built between the probation officer and offender.

Spreadsheet Activities With Conditional Progression And Automatically Generated Feedback And Grades, Thomas C. Juster

School of Geosciences Faculty and Staff Publications

Spreadsheet activities following the Spreadsheets Across the Curriculum (SSAC) model have been modified using VBA programming to automatically generate feedback, calculate grades, and ensure that students complete them in a linear fashion. Feedback is based not only on the value of cells, but also on the formulas used to compute the values. These changes greatly ease the burden of grading on instructors, and help students more quickly master tasks and concepts by providing immediate and directed feedback to their answers. Students performed significantly better on the new spreadsheet activities compared to traditional SSAC versions, with 87% achieving perfect scores of …

Assessment Of Prediction Bias In Crown Biomass Equations For Important Conifer Species Of The Inland Northwest, Brian Robert Turnquist

Graduate Student Theses, Dissertations, & Professional Papers

Several crown biomass equations have been developed for local, regional, and national scale biomass estimation across the United States. The prediction equations most commonly used were developed by Brown (1978) and Jenkins et al. (2003). Because of the widespread application of these equations for managerial and scientific use in the inland northwest, USA, crown mass data for several important conifer species were collected and used to examine the direction and magnitude of bias associated with predictions made from the diameter-based equations of Brown (1978) and Jenkins et al. (2003). A total of 140 trees of 4 different conifer species were …

Characterization Of A Cardboard Recycling Facility's Plastic Waste For Beneficial Use, Tova Sardot

Graduate Student Theses, Dissertations, & Professional Papers

An issue with old cardboard container (OCC) recycling is the generation of a plastic waste that currently either gets land-filled or burned. A Wandel screen, a common process unit, generates 35% of overall rejects that contain 75% of the facility's total plastic output. Plastic-rich Wandel wastes have not been well characterized. This study evaluated the plastic waste stream for engineering new, second-life products. Wandel wastes were composed typically of hot melt adhesives (37%), polypropylene (32%), polyethylene (17%), and polystyrene (9%). Proportions varied 10% or less in each polymer category. The plastic waste was compounded, milled and injection molded into test …

College Dating Couples' Use Of Conflict Management During A Prisoner's Dilemma Task: An Exploratory Study, Kristen E. Waldemayer

Graduate Student Theses, Dissertations, & Professional Papers

Dating violence that occurs in young college-aged couples is unique when compared to other types of violence. Aggression occurring in these couples is often bidirectional, highly impacted by situational stressors, and perpetrated by both males and females at relatively equal rates. Most importantly, dating aggression occurs within a developmental context when individuals are attempting to balance autonomy and intimacy within their relationships. However, little is known about conflict management within dating couples or if conflict management processes differ substantially for aggressive and non-aggressive dating couples. Although there has been extensive research in marital processes in conflict, only recently have researchers …

How Ch-Paa-Qn Got It's Name: A Sixth-Grade Geography Curriculum Unit For Indian Education For All In Montana, Mary Elizabeth Nellis

Graduate Student Theses, Dissertations, & Professional Papers

Nellis, Mary, M.A., Summer 2013 Geography How Ch-Paa-Qn Got Its Name: A Sixth-Grade Geography Curriculum Unit for Indian Education for All in Montana Chair: Sarah J. Halvorson This thesis reports on the design and implementation of a sixth-grade geography curriculum based on Montana House Bill 412 (HB412), a bill whereby the legislature mandated the removal of the word “squaw” from public places in Montana. The framework for this unit is founded on place-based education principles and is tailored to fit within the concepts of Indian Education for All as mandated in the Montana State Constitution. Furthermore, as a place-based unit …

Market Power And Regulatory Failure In The Montana Wholesale Electricity Market, Ross Patrick Keogh

Graduate Student Theses, Dissertations, & Professional Papers

This work investigates market power and regulatory failures in the Montana wholesale electrical market after the implementation of deregulation in 1997. It provides a review of the development of the Montana wholesale electrical market, federal and state market power regulation, economic theory, and approaches for regulating market power in electrical markets. The work primarily focuses on the conduct of PPL Corporation, which acquired the generation assets of the Montana Power Company, and its capacity to set prices in Montana. It identifies that the current regulatory scheme, which is managed by the Federal Energy Regulatory Commission, is inadequate at deterring and …

Mathematical Modeling And Disease Related Applications: A New Method Of Estimating Bacterial Mutation Rates, Dynamics Of Killer Yeast In A Chemostat, And Other Problems, Nicholas Fitzgerald Mcclure

Graduate Student Theses, Dissertations, & Professional Papers

Among the main mechanisms of evolution we find adaptation, genetic drift, gene flow, mutation, natural selection and speciation. The following thesis explores bacterial mutation rate, mutants, mutators, and how competition acts as a driving force of adaptation.

In chapter 1, the system used in reference for mutation is the devolopment of Pseudomonas aeruginosa antibacterial resistance in the Cystic Fibrosis patients. Current methods for determining mutation rate are quite involved mathematically or complicated experimentally. A new method for estimating mutation rate is discussed and compared with two other widely used methods.

In chapter 2, a microarray data set of different strains …

Diagnosis Threat In A Mild Traumatic Brain Injury Population, Haley Gail Trontel

Graduate Student Theses, Dissertations, & Professional Papers

The present study examined the effect of diagnosis threat on neuropsychological test performance. Forty-nine participants with a history of mTBI were randomly assigned to either a Diagnosis Threat group or a Control group. The Diagnosis Threat group was told that they were selected to participate based on their history of head injury and that they might expect to perform more poorly on testing. Participants in the Control group were told to perform to the best of their ability. It was hypothesized that individuals who had a history of mild Traumatic Brain Injury (mTBI) made salient prior to testing (Diagnosis Threat …

The Flight From Judgment: Reflections On Benjamin Barton’S An Empirical Study Of Supreme Court Justice Pre-Appointment Experience, Jennifer Hendricks

Publications

Discusses J. McIntyre Machinery, Ltd. v. Nicastro as an example of the Supreme Court's failure to rely on practical wisdom, in connection with the historic shift toward increasingly elite credentials for the justices.

Analysis Of The Lactobacilluscasei Supragenome And Its Influence In Species Evolution And Lifestyle Adaptation, Jeff Broadbent, E. C. Neeno-Eckwall, B. Stahl, K. Tandee, H. Cai, W. Morovic, P. Horvath, J. Heidenreich, N. T. Perna, R. Barrangou, J. L. Steele

Nutrition, Dietetics, and Food Sciences Faculty Publications

The broad ecological distribution of L. casei makes it an insightful subject for research on genome evolution and lifestyle adaptation. To explore evolutionary mechanisms that determine genomic diversity of L. casei, we performed comparative analysis of 17 L. casei genomes representing strains collected from dairy, plant, and human sources. Results Differences in L. casei genome inventory revealed an open pan-genome comprised of 1,715 core and 4,220 accessory genes. Extrapolation of pan-genome data indicates L. casei has a supragenome approximately 3.2 times larger than the average genome of individual strains. Evidence suggests horizontal gene transfer from other bacterial species, particularly lactobacilli, …

Disturbance Utilizing Control Using Lqr Theory With A State/Control Cross-Product Term In The Performance Index, Kyle Davis

Theses

No abstract provided.

A Synthetic Document Image Dataset For Developing And Evaluating Historical Document Processing Methods, Daniel Walker, William Lund, Eric Ringger

Faculty Publications

Document images accompanied by OCR output text and ground truth transcriptions are useful for developing and evaluating document recognition and processing methods, especially for historical document images. Additionally, research into improving the performance of such methods often requires further annotation of training and test data (e.g., topical document labels). However, transcribing and labeling historical documents is expensive. As a result, existing real-world document image datasets with such accompanying resources are rare and often relatively small. We introduce synthetic document image datasets of varying levels of noise that have been created from standard (English) text corpora using an existing document degradation …

Quail Vii: Proceedings Of The Seventh National Quail Symposium (January 9-12, 2012 : Tucson, Arizona), Clait E. Braun, Thomas V. Dailey

Galliformes Specialist Group and Affiliated Societies: Conference Proceedings

In memoriam: Walter Rosene, Jr., 1912-2005

In memoriam: John A. Crawford, 1946-2010

PLENARY

On some founding ideas of quailology and their propounders, Fred S. Guthery

One hundred years of quail management in Arizona, David E. Brown

Adaptive management and structured decision making: Is it really that easy? James (Barry) Grand

The Western Quail Management Plan, Larry Riley

Quail VII, a director’s perspective, Jonathan Gassett

BOBWHITE HABITAT MANAGEMENT

Impacts of invasive, exotic grasses on quail of southwestern rangelands: A decade of progress? William P. Kuvlesky Jr., Leonard A. Brennan, Timothy E. Fulbright, Fidel Hernández, Steven J. DeMaso, Joseph P. Sands, Robert …

Elevating The Everyday: Designed Objects As Companions, Cassie Hester

Theses and Dissertations

From fleeting interactions to long affairs, our relationships with things are diverse and complex. Like people, designed objects and environments are close companions in our lives. The way we understand and engage with artifacts is parallel to the way we interpret and interact with each other. A constant source of comfort and delight, frustration and anxiety, their personalities inform our everyday dialogues and experiences. Designed artifacts assume engaging and pleasurable personalities when they transcend materials, challenge perceptions, and garner active, reflective interactions. Through the investigation of familiar materials such as concrete, crayons, paper, sequins, and thread in unfamiliar formats and …

Tiger Cub Strikes Back: Memoirs Of An Ex-Child Prodigy About Legal Education And Parenting, Peter H. Huang

Publications

I am a Chinese American who at 14 enrolled at Princeton and at 17 began my applied mathematics Ph.D. at Harvard. I was a first-year law student at the University of Chicago before transferring to Stanford, preferring the latter's pedagogical culture. This Article offers a complementary account to Amy Chua's parenting memoir. The Article discusses how mainstream legal education and tiger parenting are similar and how they can be improved by fostering life-long learning about character strengths, emotions, and ethics. I also recount how a senior professor at the University of Pennsylvania law school claimed to have gamed the U.S. …

From Tiger Mom To Panda Parent, Peter H. Huang

Publications

This response to Yale Law Professor Amy Chua’s book, Battle Hymn of the Tiger Mother, complements a much longer and related article that is also in part a response to Chua’s book: Tiger Cub Strikes Back: Memoirs of an Ex-Child Prodigy About Legal Education and Parenting, 1 British Journal of American Legal Studies 297 (2012). This brief essay discusses the cultural differences between Chinese and Western views about education, learning, and parenting. This editorial draws on research in social psychology to analyze the stereotype of Asians and Asian Americans as being competent yet unsociable. Finally, this reflection draws …

Lawyers, Loyalty And Social Change, Deborah J. Cantrell

Publications

Fundamentally, cause lawyers engage in their work to make social change. Scholars of cause lawyering have generated a robust and rich literature considering important issues, such as what kinds of advocacy strategies best generate social change and what features of the relationship between cause client and cause lawyer are critical to an engaged and mutual relationship. But, the literature has neglected a key aspect of the cause lawyer and client relationship: whether the particular kind of loyalty that exists as between them hinders or helps in achieving social change. This Article fills that void. It first illuminates the particular features …

Genealogies Of Risk: Searching For Safety, 1930s-1970s, William Boyd

Publications

Health, safety, and environmental regulation in the United States are saturated with risk thinking. It was not always so, and it may not be so in the future. But today, the formal, quantitative approach to risk provides much of the basis for regulation in these fields, a development that seems quite natural, even necessary. This particular approach, while it drew on conceptual and technical developments that had been underway for decades, achieved prominence during a relatively short timeframe; roughly, between the mid-1970s and the early 1980s--a time of hard looks and regulatory reform. Prior to this time, formal conceptions of …