Digital Commons Network^™

Research Trends In The Use Of Mobile Learning In Mathematics, Helen Crompton, Diane Burke

Teaching & Learning Faculty Publications

The use of mobile learning in education is growing at an exponential rate. To best understand how mobile learning is being used, it is crucial to gain a collective understanding of the research that has taken place. This research was a systematic review of 36 studies in mobile learning in mathematics from the year 2000 onward. Eight new findings emerged: (1) The primary purpose of most studies was to focus on evaluating mobile learning. (2) Case studies and experimental design were the main research methods. (3) Most studies report positive learning outcomes; (4) Mobile phones were the mobile device used …

Hyperglycemia And Inhibition Of The Monocarboxylate Transporter 1 (Mct1) Enhances Growth Arrest In Cancer Cells, Aleksandra I. Pivovarova

Theses

Many cancer cells rely predominately on glycolysis for their energy production, even in the presence of oxygen. They proceed further and reduce the glycolysis product pyruvate to lactate, by means of fermentation, for continued ATP production. This phenomenon is called the Warburg effect, and is associated with an upregulation of glycolysis and increased lactate production. A persistent increase in glycolysis and ATP turnover leads to an intracellular proton accumulation, which could eventually lead to cell damage and death by cytosolic acidification. However, cancer cells avoid acidification and maintain an appropriate intracellular pH by employing monocarboxylate transporters for the coupled export …

Simulation Of The Propagation Of An Electromagnetic Wave In Dielectric Medium With A Time Varying Dielectric Constant, Sai Chandu Radavaram

Theses

No abstract provided.

Impact Of Size, Secondary Structure, And Counterions On The Binding Of Small Ribonucleic Acids To Layered Double Hydroxide Nanoparticles, B. V. Rodriguez, J. Pescador, N. Pollok, G. W. Beall, Corina Maeder, L. K. Lewis

Chemistry Faculty Research

Use of ribonucleic acid (RNA) interference to regulate protein expression has become an important research topic and gene therapy tool, and therefore, finding suitable vehicles for delivery of small RNAs into cells is of crucial importance. Layered double metal hydroxides such as hydrotalcite (HT) have shown great promise as nonviral vectors for transport of deoxyribose nucleic acid (DNA), proteins, and drugs into cells, but the adsorption of RNAs to these materials has been little explored. In this study, the binding of small RNAs with different lengths and levels of secondary structure to HT nanoparticles has been analyzed and compared to …

Underwater Implosion Of Cylindrical Metallic Shells In Confining Environments, Sachin Gupta

Open Access Dissertations

A fundamental experimental investigation was conducted to understand the underwater dynamic implosion of cylindrical metallic shells. In particular, the attention was focused on studying the generation of pressure waves from implosion in varying confining situations such that the fluid structure interaction with the confined structures governs the mechanics of implosion process. The experiments were conducted in three environments: (a) free-field environment represented by a large underwater pressure vessel facility, (b) partially closed environment represented by one-end open confining tube, (c) completely closed environment represented by closed confining tube. This study also utilizes the visualization and understanding of the realtime deformation …

Planar Difference Equations: Asymptotic Behavior Of Solutions And 1-1 Resonant Points, William T. Jamieson

Open Access Dissertations

In order to study the global behavior of difference equations, it is necessary to understand the local behavior in a neighborhood of a equilibrium point of the difference equation. This thesis focuses on two aspects of the local behavior of planar difference equations: the asymptotic behavior of a solution converging to a hyperbolic fixed point, and the local qualitative behavior of a non isolated fixed point whose jacobian matrix has a particular structure.

Manuscript 2 describes how closely a convergent solution {X_n} of (real or complex) difference equations x_n+1 = J x_n + f _n(x …

Goal Representation Adaptive Dynamic Programming For Machine Intelligence, Zhen Ni

Open Access Dissertations

This dissertation is focused on a general purpose new framework for machine intelligence based on adaptive dynamic programming (ADP) design. This research is significantly important for developing self-adaptive intelligent system that is highly robust and fault-tolerant to uncertain and unstructured environments. Generally, there are two key components toward building truly self-adaptive systems: fundamental understanding of brain intelligence and complex engineering designs. This dissertation will focus on general purpose computational intelligence methodologies from a biological inspired perspective, and develop a new self-learning machine intelligent system online over time. Furthermore, this new approach will also be explored on wide critical engineering applications. …

Factors Affecting Parental Involvement In Education: The Analysis Of Literature, Javid Jafarov

Khazar Journal of Humanities and Social Sciences

This study examines the factors affecting parental involvement by evaluating and analysing literature about parental involvement in education. It also answers the questions: a) What does parental involvement mean? and 2) Why is parental involvement important? In this article more than five hundreds literatures related to the factors affecting parental involvement were evaluated and analysed. The result of the analysis of literature showed that there are many factors influencing parental involvement or the level of parental involvement and these factors can be parent related, school related or student related.

Campus Open Access Funds: Experiences Of The Ku “One University” Open Access Author Fund, Rachel Gyore, Allison C. Reeve, Crystal Cameron-Vedros, Deborah Ludwig, Ada Emmett

Library Faculty Publications

In the summer of 2012, librarians from the Lawrence and Kansas City campuses of the University of Kansas (KU) proposed the creation of a KU “One University” Open Access Fund (OA Author Fund) to support open access publishing for its faculty, students, and staff. KU is a major public research and teaching institution of 28,000 students and 2,600 faculty on five campuses (Lawrence, Kansas City, Overland Park, Wichita, and Salina) (http://ku.edu/about), and has been a leader in open access initiatives for many years. A working group of librarians came together to create and implement a pilot project to explore the …

How Improving Decision-Making And Mindfulness Can Improve Legal Ethics And Professionalism, Peter H. Huang

Publications

Lawyers who behave unethically and unprofessionally do so for various reasons, ranging from intention to carelessness. Lawyer misconduct can also result from decision-making flaws. Psychologist Chip Heath and his brother Dan Heath, in their best-selling book, Decisive: How to Make Better Decisions in Life and Work, suggest a process to improve people’s decision-making. They introduce the acronym WRAP as the mnemonic for these decision-making heuristics: (1) Widen your options, (2) Reality-test your assumptions, (3) Attain distance before deciding, and (4) Prepare to be wrong. The WRAP process mitigates these cognitive biases: (1) narrow framing of a decision problem, (2) …

Response To Intervention To Educate The Diverse Needs Of Elementary Students, James H. Mcmillan, Valerie J. Robnolt, Amy C. Hutton

MERC Publications

Much research has been done regarding how to implement RTI, effective strategies for RTI, and outcomes of RTI, which is not the focus of the current study. This investigation will focus on assessing the current perceptions of elementary school educators and staff on thier current understanding of and needs for more effective implementation of RTI.

Countersupermajoritarianism, Frederic Bloom, Nelson Tebbe

Publications

How should the Constitution change? In Originalism and the Good Constitution, John McGinnis and Michael Rappaport argue that it ought to change in only one way: through the formal mechanisms set out in the Constitution’s own Article V. This is so, they claim, because provisions adopted by supermajority vote are more likely to be substantively good. The original Constitution was ratified in just that way, they say, and subsequent changes should be implemented similarly. McGinnis and Rappaport also contend that this substantive goodness is preserved best by a mode of originalist interpretation. In this Review, we press two main arguments. …

Fuzzy Sliding Mode Control Applied To A Doubly Fed Induction Generator For Wind Turbines, Sid Ahmed El Mehdi Ardjoun, Mohamed Abid

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper an indirect vector control using fuzzy sliding mode control is proposed for a double-fed induction generator (DFIG), applied for a wind energy conversion system in variable speed. The objective is to independently control the active and reactive power generated by the DFIG, which is decoupled by the orientation of the flux. The sliding mode control finds its strongest justification for the problem concerning the use of a robust nonlinear control law for the model uncertainties. As far as the fuzzy mode control is concerned, it aims at reducing the chattering effect. The obtained results show the increasing …

Model-Reference Sliding Mode Control Of A Three-Phase Four-Leg Voltage Source Inverter For Stand-Alone Distributed Generation Systems, Ayhan Özdemi̇r, İrfan Yazici, Zeki̇ye Erdem

Turkish Journal of Electrical Engineering and Computer Sciences

This paper proposes a discrete-time model-reference sliding mode control of three-phase four-leg voltage source inverters for stand-alone distributed generation systems. Three-phase four-leg voltage source inverters (VSIs) are used in a broad area. A discrete-time model-reference sliding mode controller, having superior advantages such as insensitivity to external disturbances, system parameter variations, and modeling errors, is applied to control the output voltage of three-phase four-leg VSIs. As a new study, the discrete-time model-reference sliding mode control with a supplemented output feedback integral controller is proposed so that the controlled output voltages of the VSI tracks the input reference signal. The controller is …

Performance Analysis Of A 500-Kwp Grid-Connected Solar Photovoltaic Power Plant In Kahramanmaraş, Şaban Yilmaz, Hasan Riza Özçalik

Turkish Journal of Electrical Engineering and Computer Sciences

In today's world, the daily need for and cost of energy sources increase and this forces industrial institutions to seek for new ways to generate their own energy. The developments in photovoltaic systems have recently drawn attention in the business world. Although their installation costs are high, they are environmentally friendly and profitable investments in the long run. The cost analysis of a large-scale photovoltaic generator in the climatic conditions of Kahramanmara\c{s} will lead the way to new investments. In this study, the modeling and cost analysis of an on-grid photovoltaic generator of 500 kW, which was installed to provide …

New Three-Dimensional Space Vector Pulse Width Modulation Of Pv-Af System Based On The Gh$\Gamma $ Coordinate System, Juan Zhou, Malong Liu, Chen Wei, Chaoxu Gao, Xiaojie Wu

Turkish Journal of Electrical Engineering and Computer Sciences

The photovoltaic power generation and active filter (PV-AF) system can realize photovoltaic grid-connected power regulation, and meanwhile it can also improve the power quality of power grid effectively. The four-leg grid-connected inverter has successfully been used in the three-phase four-wire system. In this paper, a three-dimensional space vector pulse width modulation (3D-SVPWM) method based on the gh$\gamma $ coordinate system for a four-leg inverter has been proposed. As the switching vectors of the four-leg inverter are in the three-dimensional space, it is difficult to realize the complex modulation process. In order to simplify the modulation process, the reference vector is …

Stability Preservation And Power Management In Autonomous Microgrids Using Adaptive Nonlinear Droop Scheme, Sara Nourollah, Abolfazl Pirayesh, Poria Astero

Turkish Journal of Electrical Engineering and Computer Sciences

This paper proposes sharing active and reactive power in autonomous voltage source inverter (VSI)-based microgrids with no physical communication links. In decentralized VSI-based microgrids, when the demand or generation changes, the output voltage of distributed generation units and the frequency of the system will also change. This study presents a novel adaptive nonlinear droop (ANLD) scheme for preserving network stability, improving the system's dynamics, and controlling power sharing in multibus microgrids in a decentralized manner. Subcontrollers are modeled in a state space and combined together so that a complete dynamic model of the network can be developed. Note that controller …

Performance Analysis Of A Low-Cost Current-Source 1-Ph Grid-Connected Pv Inverter, Gürhan Ertaşgin, Wen Liang Soong, Nesimi Ertugrul

Turkish Journal of Electrical Engineering and Computer Sciences

This paper investigates the design and performance of a 150 W single-phase current-source grid-connected inverter topology that is based on a PV array and DC link inductor acting as a constant-current source. The inverter is implemented using a single boost switch, an H-bridge inverter, and a CL output filter. The inverter output current is simply controlled using the boost switch and open-loop or feedforward control. The dark I-V configuration is used to simulate two series PV modules. Comprehensive test results are obtained to validate the computer simulation results. Furthermore, the proposed inverter's ability to deliver a sinusoidal current to the …

Amorphous Core Transformers Efficiency Analysis In Turkish Electrical Distribution Systems, Fati̇h Işik, Yilmaz Uyaroğlu

Turkish Journal of Electrical Engineering and Computer Sciences

Transformers are an indispensable element in the transmission and distribution of electricity. While they are highly efficient, the increasing global demand for electrical energy has prompted efforts to improve their performance. No-load power losses constitute the majority of total losses within electrical energy distribution, especially when looking at load ratio. In recent years, some studies have found that no-load power losses of amorphous core transformers are less than those of laminated steel core transformers by as much as 60{\%} to 70{\%}. For this paper, we have manufactured an amorphous distribution transformer prototype rated 33 kV and 1 MVA. By quantifying …

Energy Economy In Regulated And Market-Based Power System: Case Study In Serbia, Mileta Zarkovic, Ivan Skokljev

Turkish Journal of Electrical Engineering and Computer Sciences

This study presents a possible process of simulating power plant generation planning. The process combines expected overall industry costs, associated cost uncertainty, and expected CO$_{2}$ emissions for different generations, variations of future fossil fuel costs, carbon prices, plant investment costs, and demand, including price elasticity impacts. Uncertainty in the decision stems from the elasticity of prices of fuel and electricity. The aim of this paper is to apply fuzzy numbers to power generation planning and to use a Monte Carlo simulation to check. Simulations are demonstrated through a case study of an electricity industry with coal and lignite, combined cycle …

Design, Application, And Power Performance Analyses Of A Micro Wind Turbine, Hayati̇ Mamur

Turkish Journal of Electrical Engineering and Computer Sciences

In this study, design, implementation, and power performance analyses of a micro wind turbine (MWT) system are presented. An original permanent magnet synchronous generator (PMSG) that reduced cogging torque was employed as a generator in the MWT. A novel blade form offering better performance at low wind speeds was also utilized for the MWT blades. Power performance analyses of the MWT were carried out for different wind regimes by truck testing. Performance coefficient, cut-in, and cut-out of the MWT were determined as 27.7{\%}, 2.7 m/s, and 20 m/s at the end of the truck testing, respectively. Moreover, a new supervisory …

The Use Of Discussion At The Kindergarten Level To Advance Cognitive Abilities, Gayle J. Sears

Graduate Research Theses & Dissertations

The purpose of this mixed-methods study was to examine the use of discussion with preschool students for the development of language and cognitive abilities. The study focused on students who participated in 30 one-hour discussion lessons that were presented in an inner-city preschool classroom. The qualitative portion of the study involved an ethnographic examination of the discussion lessons, which were attended by a total of 22 students over a six-week period. Qualitative data were studied to determine how students responded to discussion and how student responses changed over time. The facilitation of discussion was analyzed, and the participation of individual …

Current Equalization In Parallel Leds Using Flyback Converter, Ankita Patil

Graduate Research Theses & Dissertations

With increasing demand in energy, Light Emitting Diodes (LEDs) are rapidly finding new applications. Parallel combination of LEDs is better than existing solutions for high intensity load requirement than the series combination, as it does not put constriction on number of LEDs to be used. But there are certain discrepancies in using LEDs in parallel combination. Forward voltage change and input voltage drift pose problem in current sharing in parallel branches. This thesis presents a new, cost effective and simple method to design current equalizing circuit that will allow uniform current sharing in parallel LEDs.;The proposed circuit uses magnetically coupled …

Design Of Remote Laboratory Applications Using Python, Suresh Vakati

Graduate Research Theses & Dissertations

Practical experience is significantly an advance learning tool in science and engineering courses to improve students' skill and knowledge. Traditionally, educational laboratories are helpful to the students to obtain practical knowledge independently. Because of the restricted permissions on research supplies of traditional laboratories, the attained practical knowledge is not sufficient in a highly competitive world. Remote laboratory is the one of solutions for this problem by permitting these limited resources to be accessed by the students from any place and any time. This paper reports the design process of two engineering systems using open source software tools (Python, HTML, CSS, …

Design, Synthesis, And Evaluation Of Inhibitors Of Ispd And Ispe As Potential Antibacterial, Antimalarial, And Herbicidal Agents, Michael Philip Thompson

Graduate Research Theses & Dissertations

The 2-C-methyl-D-erythritol-4-phosphate pathway, or MEP pathway, has recently gained attention as being a prime target for inhibition of many pathogenic species due to the lack of analogous enzymes in humans and many higher eukaryotes that use the mevalonic acid pathway. Either the MEP pathway or mevalonic acid pathway are utilized by all living organisms to generate the molecules isopentenyl diphosphate, IPP, and dimethyallyl diphosphate, DMAPP, which in turn can be used to create a wide variety of necessary cellular components called isoprenoids, such as cholesterol, some vitamins, pigments, etc. The MEP pathway involves seven different enzymes, which are unique in …

New Approach For Direct Analog Circuit Design, Muralidhar Sriram

Graduate Research Theses & Dissertations

In this document I'm going to discuss about the main objective of my thesis towards the partial fulfillment of MS requirement. Spice software design complexity is increased by improving its features especially concentrating on the GUI and analysis part of the circuit, while there's no active research going on in the area to automate the designing of a circuit such as finding out the values of the components for particular user defined requirements. This research concentrates on laying out the ground work for designing and implementation of one such model.

Principals' Perceptions Of The Impact Of Parent And Family Involvement Activities With Parents Of Latino Students, Rene D. Carranza

Graduate Research Theses & Dissertations

Latinos have a pattern of low academic achievement, starting in elementary school and persisting through high school and college. This pattern of achievement remains lower than that of any other group. In 2050, it is expected that Latinos will make up 30% of the U.S. workforce. This research looks at the role that parent involvement plays in academic achievement based on principals' perceptions. Perceptions are important because they influence behavior and decision making. The parent-involvement activities studied are based on the Epstein framework of six types. A survey was sent to 435 principals from the northwest suburbs of Chicago who …

Professional Learning Networks, Teacher Beliefs And Practices, Brent J. Anderson

Graduate Research Theses & Dissertations

Helping teachers develop the habits of mind and pedagogical skills to improve student achievement has been a challenge for schools and school leaders. Online professional learning networks (PLNs) are a means of allaying the barriers to collaboration. This study utilized social constructivist learning theory and self-efficacy theory to explore the relationship among frequency of teacher collaboration via PLN and teachers' sense of efficacy and adoption of best instructional practices. Study participants were teachers from throughout the United States who participated in education-related Twitter chats. The participants completed an online survey that was embedded in a tweet. The survey instrument included …

Helmet With Outside Padding, Kiran Surapaneni

Graduate Research Theses & Dissertations

Concussions are relatively common in football, due to its nature as a full-contact game. Repeated concussions may increase a person's risk in later life for chronic traumatic encephalopathy (CTE) and mental health issues such as dementia, Parkinson's disease, and depression. Though football helmets are crucial for preventing skull fractures, studies have shown that currently available helmets may not do much to protect players against concussions. This study involved designing a football helmet to reduce the magnitude of concussions occur during a head injury. The helmet was designed by adding extra padding over the outer surface of it. It was tested …

Catholic Theology And The Enlightenment (1670–1815), Ulrich Lehner

Theology Faculty Research and Publications

This chapter examines the Catholic Church’s engagement with the Enlightenment from 1670–1815. It considers Catholic philosophies of the Enlightenment and new conceptualizations of natural law. The chapter also explores Catholic exegetical discussions during the period, showing how Enlightenment concerns enabled new styles of attention to the Scriptural text, new Patristic scholarship, and the origins of the later liturgical movement. Jansenist and Gallican theologies stimulated reflection on eccelesiology and the papacy, and a variety of thinkers developed new theologies of the state, and of the economy. This period also saw the rise of the Catholic ultramontanism that was to mark Church …