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Articles 2821 - 2850 of 7930
Full-Text Articles in Entire DC Network
Design Of Multifunctional Lattice‐Frame Materials For Compact Heat Exchangers, K. N. Son, J. A. Weibel, V. Kumaresan, S. V. Garimella
Design Of Multifunctional Lattice‐Frame Materials For Compact Heat Exchangers, K. N. Son, J. A. Weibel, V. Kumaresan, S. V. Garimella
CTRC Research Publications
Structured porous materials show great potential as extended surfaces in heat-exchange applications that also require design for load-bearing capability. In particular, lattice-frame materials (LFM) are known for their superior strength-to-weight ratio; this work presents a comprehensive experimental and numerical study of fluid flow and heat transfer in porous LFMs. Flow through a periodic unit cell of the material is simulated to characterize the forced-convection performance under hydraulically and thermally fully developed conditions. The performance of LFMs with a tetrahedral ligament configuration is characterized as a function of Reynolds number in the laminar regime (150 < Re < 1000) in terms of Nusselt number and friction factor; the effect of porosity is studied by changing the ligament diameter. Experiments are performed for a subset of porosities to validate the numerical approach. A method is demonstrated for utilizing the simulation results, which assume perfect surface efficiency, to predict the performance of LFMs with non-ideal surface efficiency, based on the conduction resistance of the ligaments. It is shown that the thermal behavior of the ligaments closely matches that of cylindrical fins in cross flow and that this analogy can be used to calculate the overall surface efficiency. The implications of the current results on the design of compact heat exchangers using LFMs is assessed using several conventional performance metrics. Our analysis illustrates the challenges in defining any one universal performance metric for compact heat exchanger design; an appropriate performance metric must be selected that accounts for the particular multifunctional performance characteristics of interest. LFMs are shown to provide the benefits of high-porosity and high surface area-to-volume ratio of materials such as metal foams, while also incurring lower pressure drops and displaying higher structural integrity. This makes them ideal for heat exchangers in aerospace and other applications demanding such multifunctional capabilities. The characterization provided in this study readily allows LFM designs for heat exchanger applications with combined heat-transfer and pressure-drop constraints.
Electronics Thermal Management In Information And Communications Technologies: Challenges And Future Directions, S. V. Garimella, T. Persoons, J. A. Weibel, V. Gektin
Electronics Thermal Management In Information And Communications Technologies: Challenges And Future Directions, S. V. Garimella, T. Persoons, J. A. Weibel, V. Gektin
CTRC Research Publications
This paper reviews thermal management challenges encountered in a wide range of electronics cooling applications from large-scale (data center and telecommunication) to smallscale systems (personal, portable/wearable, and automotive). This paper identifies drivers for progress and immediate and future challenges based on discussions at the 3rd Workshop on Thermal Management in Telecommunication Systems and Data Centers held in Redwood City, CA, USA, on November 4–5, 2015. Participants in this workshop represented industry and academia, with backgrounds ranging from data center thermal management and energy efficiency to high-performance computing and liquid cooling, thermal management in wearable and mobile devices, and acoustic noise …
Design Of Electrode Arrays For 3d Capacitance Tomography In Planar Domains, S Taylor
Design Of Electrode Arrays For 3d Capacitance Tomography In Planar Domains, S Taylor
CTRC Research Publications
Electrode design is investigated for electrical capacitance tomography on a 1 mm-thick 3D planar domain. Arrays of square electrodes are located on both sides of the domain, which is filled with dielectric material. Anomalies of interest are voids in the material with low dielectric constant. Simulated tomography is conducted with various electrode patterns over a range of electrode sizes in order to compare performance. The high-aspect-ratio domain requires a large finite element mesh for simulating electric fields and for defining spatial sensitivity responses of electrode pairs. Compared to the canonical 2D pipe cross-section problem, this high-aspect-ratio system requires solving the …
Quantitative Evaluation Of The Dependence Of Pool Boiling Heat Transfer Enhancement On Sintered Particle Coating Characteristics, S. Sarangi, J A. Weibel, S V. Garimella
Quantitative Evaluation Of The Dependence Of Pool Boiling Heat Transfer Enhancement On Sintered Particle Coating Characteristics, S. Sarangi, J A. Weibel, S V. Garimella
CTRC Research Publications
Immersion cooling strategies often employ surface enhancements to improve the pool boiling heat transfer performance. Sintered particle/powder coatings have been commonly used on smooth surfaces to reduce the wall superheat and increase the critical heat flux (CHF). However, there is no unified understanding of the role of coating characteristics on pool boiling heat transfer enhancement. The morphology and size of the particles affect the pore geometry, permeability, thermal conductivity, and other characteristics of the sintered coating. In turn, these characteristics impact the heat transfer coefficient and CHF during boiling. In this study, pool boiling of FC-72 is experimentally investigated using …
Case Study On The Two Individual Paradigms Of Education In A Manufacturing Quality Course, Rustin Webster, Matthew Turner
Case Study On The Two Individual Paradigms Of Education In A Manufacturing Quality Course, Rustin Webster, Matthew Turner
School of Engineering Technology Faculty Publications
This article provides a review of two paradigms of education and the application of each in a manufacturing quality control course for engineering technology (ET) students. The most common paradigm of education used in quality-focused courses is teaching-centered. This traditional method has contributed to students’ perception of quality (e.g., quality control, statistical process control, total quality management), as a dry subject to learn compared to other core and/or elective courses in their plans of study. This case study describes the creation and implementation of a manufacturing quality control curriculum that is learning centered. Based on student feedback, this approach increased …
Applying Authentic Learning Through Cultivation Of The Entrepreneurial Mindset In The Engineering Classroom, Lisa Bosman, Stephanie Fernhaber
Applying Authentic Learning Through Cultivation Of The Entrepreneurial Mindset In The Engineering Classroom, Lisa Bosman, Stephanie Fernhaber
Technology Leadership and Innovation Faculty Publications
Higher education provides plenty of opportunity for theory and in many cases, even the ability to apply theory in a laboratory setting. Yet, there remains limited opportunity for students to learn by doing through participation in authentic learning experiences. The purpose of this paper is to provide one potential solution for integrating authentic learning into the engineering classroom by cultivating the entrepreneurial mindset. As entrepreneurship serves as an integral part of the economy, developing an entrepreneurial mindset through authentic learning experiences is essential for engineers. While online discussion prompts represent a useful way for educators to facilitate student learning, less …
Integrating Data Information Literacy Into A Service- Learning Engineering Design Course, Margaret Phillips, Mohammad Jahanshahi
Integrating Data Information Literacy Into A Service- Learning Engineering Design Course, Margaret Phillips, Mohammad Jahanshahi
Libraries Faculty and Staff Scholarship and Research
Over the past several years increasing emphasis has been placed on the development of data information literacy (DIL) skills for engineering researchers to comply with funding requirements and to facilitate data sharing, reuse, and preservation. These efforts have been largely aimed at faculty members and graduate students, and to some extent undergraduate students in preparation for their roles as future researchers. However, little attention has been directed at developing DIL skills in undergraduate engineering students engaged in non-research activities, such as service-learning design projects that integrate instruction and community service. This work-in-progress paper reports on using service-learning pedagogy to integrate …
Toward A Unified Theory Of Business Information, Hal P. Kirkwood Jr
Toward A Unified Theory Of Business Information, Hal P. Kirkwood Jr
Libraries Faculty and Staff Scholarship and Research
This article analyses and discusses concepts of business information, with a view to developing a unified theory of business information to help underpin professional information work.
Across The Iron Curtain: Postwar Jewish Displacement, Dispersion, And Contact, Rebekah Klein-Pejsova
Across The Iron Curtain: Postwar Jewish Displacement, Dispersion, And Contact, Rebekah Klein-Pejsova
Library Scholars Grant Program
No abstract provided.
Kentucky Seedless Watermelon Variety Trial, 2016, Shubin Saha, John Snyder, John Walsh
Kentucky Seedless Watermelon Variety Trial, 2016, Shubin Saha, John Snyder, John Walsh
Midwest Vegetable Trial Reports
No abstract provided.
Cantaloupe Variety Trial For Kentucky, 2016, John Walsh, Shubin K. Saha, John Snyder
Cantaloupe Variety Trial For Kentucky, 2016, John Walsh, Shubin K. Saha, John Snyder
Midwest Vegetable Trial Reports
No abstract provided.
Consulting With Collaborative Writing Teams, Kathleen M. Coffey, Bridget Gelms, Cynthia C. Johnson, Heidi A. Mckee
Consulting With Collaborative Writing Teams, Kathleen M. Coffey, Bridget Gelms, Cynthia C. Johnson, Heidi A. Mckee
The Writing Center Journal
No abstract provided.
Wandering The Web-Yoga Websites Webliography, Roxanne Myers Spencer, Lucretia T. Dye
Wandering The Web-Yoga Websites Webliography, Roxanne Myers Spencer, Lucretia T. Dye
Against the Grain
No abstract provided.
The Undercurrents Of Listening: A Qualitative Content Analysis Of Listening In Writing Center Tutor Guidebooks, Kathryn Valentine
The Undercurrents Of Listening: A Qualitative Content Analysis Of Listening In Writing Center Tutor Guidebooks, Kathryn Valentine
The Writing Center Journal
No abstract provided.
Traffic Performance Of Arterial Highways And Driver Routing Characteristics During A Freeway Detour, Christopher M. Day, Steven M. Lavrenz, Howell Li, Darcy M. Bullock
Traffic Performance Of Arterial Highways And Driver Routing Characteristics During A Freeway Detour, Christopher M. Day, Steven M. Lavrenz, Howell Li, Darcy M. Bullock
Arterial Performance Measure Tools Project
No abstract provided.
Outcome Assessment Using Connected Vehicle Data To Justify Signal Investments To Decision Makers, Drake Krohn, Lou Rymarcsuk, Jijo Mathew, Chris Day, Howell Li, Ashwin Patel, Daniel Farley, Darcy M. Bullock
Outcome Assessment Using Connected Vehicle Data To Justify Signal Investments To Decision Makers, Drake Krohn, Lou Rymarcsuk, Jijo Mathew, Chris Day, Howell Li, Ashwin Patel, Daniel Farley, Darcy M. Bullock
JTRP Affiliated Reports
Elected officials and decision makers are increasingly seeking outcome assessment of capital projects, such as corridor signal modernization and adaptive control projects. This paper describes the use of connected vehicle data to perform corridor travel time outcome assessment along five corridors in the greater Philadelphia, Pennsylvania area. These corridors are comprised of a total of 2,184 signals and are considered five of the most critical corridors in this region, experiencing a high volume of traffic, with AADT greater than 30,000 vehicles. These corridors were evaluated for six weeks before and after the adaptive installation through the use of private-sector segment …
Dear Owl Mail: Centering Writers' Concerns In Online Tutor Preparation, Cristyn L. Elder
Dear Owl Mail: Centering Writers' Concerns In Online Tutor Preparation, Cristyn L. Elder
The Writing Center Journal
No abstract provided.
Reading And Writing Centers: A Primer For Writing Center Professionals, Ellen C. Carillo
Reading And Writing Centers: A Primer For Writing Center Professionals, Ellen C. Carillo
The Writing Center Journal
No abstract provided.
Curating Automatic Vehicle Location Data To Compare The Performance Of Outlier Filtering Methods, Jijo K. Mathew, Christopher M. Day, Howell Li, Darcy M. Bullock
Curating Automatic Vehicle Location Data To Compare The Performance Of Outlier Filtering Methods, Jijo K. Mathew, Christopher M. Day, Howell Li, Darcy M. Bullock
JTRP Affiliated Reports
Agencies use a variety of technologies and data providers to obtain travel time information. The best quality data can be obtained from second-by-second tracking of vehicles, but that data presents many challenges in terms of privacy, storage requirements and analysis. More frequently agencies collect or purchase segment travel time based upon some type of matching of vehicles between two spatially distributed points. Typical methods for that data collection involve license plate re-identification, Bluetooth, Wi-Fi, or some type of rolling DSRC identifier. One of the challenges in each of these sampling techniques is to employ filtering techniques to remove outliers associated …
Travel Time Observations Using Bluetooth Mac Address Matching: A Case Study On The Rajiv Gandhi Roadway: Chennai, India, Stephen M. Remias, Alexander M. Hainen, Jijo K. Mathew, Lelitha Vanajakshi, Anuj Sharma, Darcy M. Bullock
Travel Time Observations Using Bluetooth Mac Address Matching: A Case Study On The Rajiv Gandhi Roadway: Chennai, India, Stephen M. Remias, Alexander M. Hainen, Jijo K. Mathew, Lelitha Vanajakshi, Anuj Sharma, Darcy M. Bullock
JTRP Affiliated Reports
Bluetooth MAC Address matching has become a useful approach for determining travel times on corridors in the United States. In September 2013, an international collaborative study was performed using this technology along a busy urban corridor in Chennai, India. Two Purdue University graduate students traveled to Chennai, India to interact and understand the dynamics of exchanging knowledge and implementing technologies in different environments. The students worked with students from IIT Madras to determine the feasibility of Bluetooth probe vehicle technology along a typical Indian corridor. The study determined that it is feasible to expand Bluetooth use in India. Using the …
Common Data Formats For Re-Identification And High-Resolution Data, Stanley E. Young, Darcy M. Bullock, Dennis So Ting Fong
Common Data Formats For Re-Identification And High-Resolution Data, Stanley E. Young, Darcy M. Bullock, Dennis So Ting Fong
Arterial Performance Measure Tools Project
No abstract provided.
Real-Time Monitoring Concepts For Arterials Using Re-Identification And High-Resolution Data, Stanley E. Young, Dennis So Ting Fong
Real-Time Monitoring Concepts For Arterials Using Re-Identification And High-Resolution Data, Stanley E. Young, Dennis So Ting Fong
Arterial Performance Measure Tools Project
No abstract provided.
Assessing Longitudinal Arterial Performance And Traffic Signal Retiming Outcomes, Steven M. Lavrenz, Christopher M. Day, W Benjamin Smith, James R. Sturdevant, Darcy M. Bullock
Assessing Longitudinal Arterial Performance And Traffic Signal Retiming Outcomes, Steven M. Lavrenz, Christopher M. Day, W Benjamin Smith, James R. Sturdevant, Darcy M. Bullock
Arterial Performance Measure Tools Project
No abstract provided.
Design And Pitch: Introducing Multiliteracies Through Scientific Research Posters, Sohui Lee, Russ E. Carpenter
Design And Pitch: Introducing Multiliteracies Through Scientific Research Posters, Sohui Lee, Russ E. Carpenter
The Writing Center Journal
No abstract provided.
Multimedia Techniques For Construction Education And Training, Wayne A. Bunnell, Darcy M. Bullock
Multimedia Techniques For Construction Education And Training, Wayne A. Bunnell, Darcy M. Bullock
JTRP Technical Reports
The current profession of civil engineering often focuses education and training on code compliance rather than constructability and construction techniques. Also, it is well accepted that it takes a decade or more for engineers to develop a high-level project construction understanding, that and many state departments of transportation rely on in-field training for entry-level inspectors, with little or no education provisions for contractors. This research investigated the use of time-lapse photography to develop training and education material that will improve the understanding of project construction and crucial quality control specifications of an entry-level engineer, contractor, or inspector. Overall, the project …
Tangier And Kerouac's Oriental Experience In Liminality, Peggy Pacini
Tangier And Kerouac's Oriental Experience In Liminality, Peggy Pacini
CLCWeb: Comparative Literature and Culture
In her article "Tangier and Kerouac's Oriental Experience in Liminality" Peggy Pacini discusses Kerouac's production derived from his Tangerian experience. Since the Tangier narratives have no existence of their own in the Duluoz Legend and are included in larger volumes about traveling and passing through, Pacini examines how this production cohered within the entire Legend and the terminology and world vision Kerouac had already fashioned. Focusing on two texts, "Big Trip to Europe" and "Passing through Tangiers, France and London," Pacini considers Kerouac's and his alter ego Duluoz's visions of Tangier and their journey to Tangier as many thresholds or …
Bowles's Up Above The World As Beatnik Murder Mystery, Greg Bevan
Bowles's Up Above The World As Beatnik Murder Mystery, Greg Bevan
CLCWeb: Comparative Literature and Culture
In his article "Bowles's Up Above the World as Beatnik Murder Mystery" Greg Bevan discusses Paul Bowles's fourth and final novel, which at the time of its publication was met with mixed reactions from reviewers and its creator alike, and has seen relatively scanty critical attention in the years since. Gena Dagel Caponi perceives in the novel a reflection of Bowles's struggle for control, during the time of its writing, in the face of his wife Jane's terminal illness. Building on this insight, the current essay notes the same tension in the writings of the Beats—a movement with which Bowles …
Burroughs As A Political Writer?, Alexander Greiffenstern
Burroughs As A Political Writer?, Alexander Greiffenstern
CLCWeb: Comparative Literature and Culture
In his article "Burroughs as a Political Writer?" Alexander Greiffenstern discusses political elements in William S. Burroughs's work. Greiffenstern looks at Burroughs's text "The Coming of the Purple Better One" written for Esquire about the Democratic National Convention in Chicago 1968. By writing a surprisingly personal text, Burroughs might have captured something about the significance of the convention that many later historical accounts miss. In the end, Burroughs leaves the critical reader no other choice than to attempt a historical and political analysis.
Beat Contenders (Micheline, Sanders, Kupferberg), A. Robert Lee
Beat Contenders (Micheline, Sanders, Kupferberg), A. Robert Lee
CLCWeb: Comparative Literature and Culture
In his article "Beat Contenders (Micheline, Sanders, Kupferberg)" A. Robert Lee asks if we are in danger of too fixed a Beat canonization. That is, do the Usual Suspects—Ginsberg, Kerouac, and Burroughs, with Corso, Ferlinghetti, Cassady, and Snyder in the frame—assume too presiding a role? There is, for sure, rightly, increased recognition of Beat women writers and attention has been given to the Afro-Beat circuit and, indeed, to a wider multicultural roster to include Latino/a and Asian American authorship. Beat's international reach has won its place, from the United Kingdom and Continental Europe to Japan and Australia. Even so, other …
The Cultural Translation Of Ginsberg's Howl In Turkey, Erik Mortenson
The Cultural Translation Of Ginsberg's Howl In Turkey, Erik Mortenson
CLCWeb: Comparative Literature and Culture
In his article "The Cultural Translation of Ginsberg's Howl in Turkey" Erik Mortenson examines three Turkish translations of Allen Ginsberg's poem Howl in order to explore the ways in which Ginsberg's poem becomes redeployed in new cultural contexts. Orhan Duru and Ferit Edgü's 1976 translation presents a more politicized Ginsberg that draws on his anti-establishment credentials as a social activist. This comes as little surprise, since in pre-1980 coup Turkey rebellion was thought in purely political terms of right verses left. Hakan Arslan's 1991 update provides a less political and more familiar Ginsberg, in keeping with a society that left …