1,725,129 research outputs found
Detours – Unplanned Learning Opportunities
No full textTeachers have often seen that their carefully planned lessons take unexpected turns and end up not achieving their intended learning objectives. Here is a narrative from Rupesh Gesota who seizes such detours as opportunities for unintended learning and formative assessment
Jain Dharmatil Dipavali:Swarup ani Aitihasikata/ जैन धर्मातील दीपावली:स्वरूप आणि ऐतिहासिकता
No full text<p>This article describes nature and traces the historicity of popular festival of Dipavali/Diwali celebrated in Jain religion. </p>
Decoding Actin: A window into the machinery of a cell
No full textPoster Presenter: Rupesh Kandel
Research Team: Rupesh Kandel, University of Mississippi; Laurel Fishburn: Louisiana State University; Victoria Amari: University of Mississippi; Jorge Almodovar: University of Maryland; Nikki Reinemann: University of Mississippi
Abstract: This research explores how actin filaments—essential components of a cell’s internal framework—respond to their environment. Using Quartz Crystal Microbalance with Dissipation (QCM-D), the study tracks how actin layers form and how their stiffness evolves over time. Actin plays a central role in how cells move, divide, and maintain their shape—all of which involve constant feedback between mechanical forces and the cell\u27s internal structure. By investigating how actin networks sense and respond to physical cues, this research helps uncover the fundamental force-feedback mechanisms that govern cell behavior from the molecular level up
Electrochemomechanics in Mixed Ionic Electronic Conductors and solid oxide cells
Full text linkThis thesis presents a model for coupled electrochemomechanics in Mixed Ionic Electronic Conductors (MIEC). A continuum model is formulated to simulate the transport of ionic defects and the stress distribution in the conductor arising from the chemical expansion associated with the defects. First, a finite element formulation of the model is developed and validated with various analytical solutions and comparisons with experimental results. In the third chapter the coupled model is used along with an iterative scheme to simulate the transport characteristics in solid oxide cells with oxygen surface exchange and results are compared with experimental cell operation. The model is used to study the effect of oxygen surface exchange and the bulk diffusion of defects on the performance of solid oxide cell. In the fourth chapter, the transport of ionic defects is studied under spatially varying oxygen surface exchange in solid oxide cells due to the presence of metal current collector. Various defect transport mechanisms (boundary value problem setups) are proposed and studied to identify and explain the influence of metal current collector on oxygen exchange at the electrode film surface.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2022-08-01The student, Rupesh Kumar Mahendran, accepted the attached license on 2020-07-21 at 16:46.The student, Rupesh Kumar Mahendran, submitted this Thesis for approval on 2020-07-21 at 17:01.This Thesis was approved for publication on 2020-07-24 at 10:34.DSpace SAF Submission Ingestion Package generated from Vireo submission #15716 on 2020-10-02 at 15:34:04Made available in DSpace on 2020-10-07T22:44:46Z (GMT). No. of bitstreams: 3
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Previous issue date: 2020-07-24Embargo set by: Seth Robbins for item 116264
Lift date: 2022-10-07T22:44:53Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemAuthor requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Onl
Making sense of adding unlike fractions
No full textHere is an account of a class in which this problem was
tackled by students who had understood the need/reason
for fractions to be of the same size i.e., to have the same
denominators so as to be able to add them easily. However,
they had not yet arrived at any particular method to achieve
this. This account is written by Rupesh Gesota, an engineer-
turned-school-maths teacher. Check the 'Teacher's Blog'
sub-page of the website www.supportmentor.weebly.com
- in which this account. was first published- to know more
about his adventures in teaching math. Given below is the
description of the class in Rupesh’s words
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Power Stages and Control of Wireless Power Transfer Systems (WPTSs)
Full text linkWireless charging of electric vehicle (EV) batteries by inductive power transfer (IPT) offers unique advantages compared to conventional conductive chargers. Due to the absence of a galvanic connection, the charging process requires no user interaction and no moving of mechanical components. For public transport systems, e.g., public buses or tramways, this makes possible a fully automated opportunity charging at bus stations, taxicab stands, or traffic lights. The schematic of wireless battery charger (WBC) is made of two stages, one is transmitter stage and another one is receiver stage. Both the stages include coils and capacitors to resonate at the supply frequency along with power conversion circuits. The transmitter coil is buried in the ground while receiving coil is situated in the vehicle.
Based on the connection of resonating capacitors four topologies are possible which can be divided into two arrangements i) transmitter capacitor in series while receiver capacitor is in either series or in parallel, giving rise to SS and SP topologies, ii) transmitting capacitor in parallel while receiving capacitor is in either series or in parallel, giving rise to PS and PP topologies. In the thesis, these topologies have been studied in detail in terms of efficiency, power sizing of supply inverter and resonating coils, behavior under the extreme condition of open and short circuit of the receiver.
Power conversion circuitry of a WBC system includes a diode rectifier to supply the load with a direct voltage and resorts to different solutions for charging the battery. The two most used solutions are either in a straightforward manner through the diode rectifier or through a chopper in cascade to the diode rectifier. These two arrangements have been discussed and compared in terms of efficiency and power sizing of supply inverter and transmitting and receiving coil, including the selection of the optimum chopper input voltage.
Due to aging and thermal effect, the parameters of the reactive components of a WBC system may change and this can deviates the resonance frequency from the supply frequency. In this thesis the impact of such mismatch on efficiency and supply inverter power sizing factor of WBC with SS topology has been studied. Three supply frequency updating techniques to keep in resonance either the transmitter stage or the receiver stage or the impedance seen from power supply have been investigated.
The thesis continues with the study of high power WBC systems which includes power supply architecture, core material and coil geometry. A review of different power supply architectures such as single phase with two stage and parallel topologies including their merits and demerits have been presented. Reviewing some paper on coil geometry, DD coil is found to be suitable for high power application. Using JMAG simulation tool, a transmitter track of three DD coils and a receiver with one DD coil has been analyzed when receiver is moving on the transmitting track.
Due to disfavor of ferrite as a core material for high-power WBC system, a varieties of different powdered magnetic materials have been considered here and compared in terms of saturated value of the magnetic flux density, magnetic properties -like dependency of their permeability on temperature, magnetic field strength and frequency-, power losses and cost. At last, two methods to model the WPT system have been considered. The methods model the system by considering the envelop of the signals.
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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