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Articles 991 - 1020 of 8613
Full-Text Articles in Entire DC Network
Reader’S Roundup: Monographic Musings & Reference Reviews, Corey Seeman
Reader’S Roundup: Monographic Musings & Reference Reviews, Corey Seeman
Against the Grain
No abstract provided.
Atg Interviews Dr. Anke Beck, Ceo Of Intech Open, Katina Strauch, Tom Gilson
Atg Interviews Dr. Anke Beck, Ceo Of Intech Open, Katina Strauch, Tom Gilson
Against the Grain
No abstract provided.
Meeting Institutional Goals By Working Beyond Institutional Walls, John Chodacki, Daniella Lowenberg
Meeting Institutional Goals By Working Beyond Institutional Walls, John Chodacki, Daniella Lowenberg
Against the Grain
No abstract provided.
Ir-Themed Issue — Irs R Cool Again, Burton Callicot, Natasha Simons
Ir-Themed Issue — Irs R Cool Again, Burton Callicot, Natasha Simons
Against the Grain
No abstract provided.
If Rumors Were Horses, Katina Strauch
And They Were There- Reports Of Meetings- Reports Of Meetings — Reports Of Meetings — 38th Annual Charleston Conference, Ramue K. Kubilius, Sever Bordeianu
And They Were There- Reports Of Meetings- Reports Of Meetings — Reports Of Meetings — 38th Annual Charleston Conference, Ramue K. Kubilius, Sever Bordeianu
Against the Grain
No abstract provided.
The Scholarly Publishing Scene — 2019 Prose Awards, Myer Kutz
The Scholarly Publishing Scene — 2019 Prose Awards, Myer Kutz
Against the Grain
No abstract provided.
It’S High Time — Metrics In The Administration Of Higher Ed, Darby Orcutt
It’S High Time — Metrics In The Administration Of Higher Ed, Darby Orcutt
Against the Grain
No abstract provided.
Reginald Sutcliffe And The Invention Of Modern Weather Systems Science, Jonathan E. Martin
Reginald Sutcliffe And The Invention Of Modern Weather Systems Science, Jonathan E. Martin
Purdue University Press Book Previews
Despite being perhaps the foremost British meteorologist of the twentieth century, Reginald Sutcliffe has been understudied and underappreciated. His impact continues to this day every time you check the weather forecast. Reginald Sutcliffe and the Invention of Modern Weather Systems Science not only details Sutcliffe’s life and ideas, but it also illuminates the impact of social movements and the larger forces that propelled him on his consequential trajectory. Less than a century ago, a forecast of the weather tomorrow was considered a practical impossibility. This book makes the case that three important advances guided the development of modern dynamic meteorology, …
Intersecting Engineering And Literacies: A Review Of The Literature On Communicative Literacies In K-12 Engineering Education, Katarina N. Silvestri, Michelle E. Jordan, Patricia Paugh, Mary B. Mcvee, Diane L. Schallert
Intersecting Engineering And Literacies: A Review Of The Literature On Communicative Literacies In K-12 Engineering Education, Katarina N. Silvestri, Michelle E. Jordan, Patricia Paugh, Mary B. Mcvee, Diane L. Schallert
Journal of Pre-College Engineering Education Research (J-PEER)
Given the increased attention on pre-college engineering education and its disciplinary nature pertaining to language, discourses, and communicative practices, this state-of-the-art literature review focused on findings of research articles informed by qualitative and quantitative data to foreground communicative literacies within engineering design teams at the pre-college level. A disciplinary literacies framework was used to interpret and analyze published works in this particular domain. A search, selection, and inclusion process typical for state-of-the-art reviews yielded 33 studies. Constant comparison and open-coding led to clustering studies under five overarching themes in ranked order of frequency of occurrence pertaining to: (a) engineering disciplinary …
Research Experiences Instrument Scoring Guide, Eric Holloway, Kerrie Anna Douglas, William Charles Oakes, David Radcliffe
Research Experiences Instrument Scoring Guide, Eric Holloway, Kerrie Anna Douglas, William Charles Oakes, David Radcliffe
School of Engineering Education Faculty Publications
This document is a scoring guide to assist higher-education administrators, faculty, and researchers who wish to use the Research Experiences Instrument (REI). There are five aspects, or factors, that the REI is intended to measure relative to engineering Ph.D. students’ opportunities to practice being a professional in their research experiences, and an overall REI score. Detailed scoring instructions are provided. The REI was developed to assess how the research experiences of engineering Ph.D. students are preparing them for practice. Utilizing a rigorous instrument development process, the REI was shown to be a tool that can reliably and validly be used …
Model-Based Fault Analysis Of Communication Between Supervisors And Their Subordinates In The Japanese Workplace, Misako Yoshinari, Hidekazu Nishimura, Tetsuya Toma
Model-Based Fault Analysis Of Communication Between Supervisors And Their Subordinates In The Japanese Workplace, Misako Yoshinari, Hidekazu Nishimura, Tetsuya Toma
CESUN Conference
This paper uses model-based fault analysis to identify the functions and factors that may cause miscommunication between supervisors and their subordinates. In describing the system model, a system-engineering approach is used to clearly define behaviors and interactions between supervisors and subordinates in the Japanese workplace. Semi-structured interviews were conducted to extract system requirements, and the functional architecture is described. The system model was verified by interviewing business persons. Using the system model, we identify the major functions and factors disrupting communication.
Cost Analysis Of Evtol Configuration Design For An Air Ambulances System In Japan, Yusuke Mihara, Payuhavorakulchai Pawnlada, Aki Nakamoto, Tsubasa Nakamura, Masaru Nakano
Cost Analysis Of Evtol Configuration Design For An Air Ambulances System In Japan, Yusuke Mihara, Payuhavorakulchai Pawnlada, Aki Nakamoto, Tsubasa Nakamura, Masaru Nakano
CESUN Conference
Electric-vertical-takeoff-and-landing (eVTOL) aircraft, known as urban air mobility or flying cars, are being considered for widespread use as air taxis, emergency medical transportation, sightseeing vehicles, and rural transportation, owing to their reduced-size, low-cost, and low-noise characteristics. In this study, we conduct an interview at a Japanese hospital that currently uses a helicopter for medical emergencies to output the mission profile. Due to current battery-technology limitations, the new air ambulance, which will deliver a doctor to a patient, is conceived as having 2 passengers, including the pilot. Two eVTOL configurations are studied: a fixed-wing craft and a multi-rotor. The purpose of …
The Challenges And Opportunities Of Teaching Systems Engineering For Large Scale Engineering Systemse, Edward Pines, Dennis Engi
The Challenges And Opportunities Of Teaching Systems Engineering For Large Scale Engineering Systemse, Edward Pines, Dennis Engi
CESUN Conference
In this paper, we discuss a course in large scale systems engineering that was developed as part of a twelve-credit Graduate Certificate in Systems Engineering for part-time and returning students. Our focus was on how to work on big, unmanageable, messy problems. Teaching systems engineering for large-scale engineering systems is challenging for many reasons. One of the main challenges is the breadth of material to be addressed within one or two courses. Other challenges result from how students learn about the transitions from the development of a conceptual framework to systems architecture through engineering design, mathematical analysis and eventual construction …
International Publishing: Challenges And Considerations, Sarah Wipperman, Nina Collins
International Publishing: Challenges And Considerations, Sarah Wipperman, Nina Collins
Libraries Faculty and Staff Scholarship and Research
This chapter discusses various challenges authors face in navigating the international academic publishing ecosystem from a scholarly communication perspective. The chapter is intended to give readers a better understanding of common topics and issues in publishing so that, as authors, they can make more informed decisions about where and how to publish.
Library Publishing Directory 2021, Library Publishing Coalition
Library Publishing Directory 2021, Library Publishing Coalition
Library Publishing Directory
No abstract provided.
Characterization Of Microbial Populations In Landfill Leachate, Umut M. Bicim, Hanna Fulford, Lori A. Hoagland, Alejandro R. Sanchez, Amisha D. Shah, Inez Hua
Characterization Of Microbial Populations In Landfill Leachate, Umut M. Bicim, Hanna Fulford, Lori A. Hoagland, Alejandro R. Sanchez, Amisha D. Shah, Inez Hua
Discovery Undergraduate Interdisciplinary Research Internship
In the United States, municipal solid waste (MSW) landfills remain a potential mining source of recoverable materials, including but not limited to critical, precious, and rare earth metals found in electronic waste. This is possible due to collectible leachate that filters through MSW landfills, carrying metals, nutrients of value, and microbes—some of which may hold key metal bioleaching properties—within. The purpose of this study is to begin analyzing leachate from MSW landfills in the American Midwest to understand the composition of microbial communities within these landfills. Landfill leachate samples sourced in northern Indiana, representing the landfill process during unique times …
Improved Live Load Distribution Factors For Use In Load Rating Of Older Slab And T-Beam Reinforced Concrete Bridges, Faezeh Ravazdezh, Julio A. Ramirez, Ghadir Haikal
Improved Live Load Distribution Factors For Use In Load Rating Of Older Slab And T-Beam Reinforced Concrete Bridges, Faezeh Ravazdezh, Julio A. Ramirez, Ghadir Haikal
JTRP Technical Reports
This report describes a methodology for demand estimate through the improvement of load distribution factors in reinforced concrete flat-slab and T-beam bridges. The proposed distribution factors are supported on three-dimensional (3D) Finite Element (FE) analysis tools. The Conventional Load Rating (CLR) method currently in use by INDOT relies on a two-dimensional (2D) analysis based on beam theory. This approach may overestimate bridge demand as the result of neglecting the presence of parapets and sidewalks present in these bridges. The 3D behavior of a bridge and its response could be better modeled through a 3D computational model by including the participation …
Using The Light Weight Deflectometer For Performance-Based Quality Assurance Testing Of Cement Modified Subgrades, Peter J. Becker
Using The Light Weight Deflectometer For Performance-Based Quality Assurance Testing Of Cement Modified Subgrades, Peter J. Becker
JTRP Technical Reports
This report documents the findings from SPR-4230 (Alternative Quality Assurance Methods for Compacted Subgrade). The main objective of SPR-4230 involved establishing performance-related quality assurance (QA) test methods for pavement subgrade construction. Because INDOT generally prefers specifying subgrade treatment type IBC (i.e., 14-in. cement modified subgrade), this study focused on performance-based QA test methods for constructing cement modified subgrade. Moreover, INDOT prefers using light weight deflectometer (LWD) for chemically modified subgrade construction acceptance, so this study aimed to use LWD deflection measurements as performance-related construction acceptance criteria. A laboratory study was performed to relate LWD deflections with resilient modulus that is …
Tscan–Stationary Lidar For Traffic And Safety Applications: Vehicle Interpretation And Tracking, Vamsi Krishna Bandaru, Mario A. Romero, Cristhian Lizarazo, Andrew P. Tarko
Tscan–Stationary Lidar For Traffic And Safety Applications: Vehicle Interpretation And Tracking, Vamsi Krishna Bandaru, Mario A. Romero, Cristhian Lizarazo, Andrew P. Tarko
JTRP Technical Reports
To improve traffic performance and safety, the ability to measure traffic accurately and effectively, including motorists and other vulnerable road users, at road intersections is needed. A past study conducted by the Center for Road Safety has demonstrated that it is feasible to detect and track various types of road users using a LiDAR-based system called TScan. This project aimed to progress towards a real-world implementation of TScan by building two trailer-based prototypes with full end-user documentation. The previously developed detection and tracking algorithms have been modified and converted from the research code to its implementational version written in the …
Variability In Preschool Class Scores And Children’S School Readiness, Jennifer Finders, Adassa Budrevich, Robert Duncan, David J. Purpura, James Elicker, Sara A. Schmitt
Variability In Preschool Class Scores And Children’S School Readiness, Jennifer Finders, Adassa Budrevich, Robert Duncan, David J. Purpura, James Elicker, Sara A. Schmitt
Purdue Center for Early Learning Faculty and Staff Publications
The Classroom Assessment Scoring System (CLASS) is a widely administered measure of classroom quality that assesses teacher-child interactions in the domains of Emotional Support, Classroom Organization, and Instructional Support. We use data from an evaluation of state-funded prekindergarten provided to 684 children from families with low incomes (Mage = 57.56 months, 48% female) to examine the extent to which CLASS scores vary over the course of an observational period within a single day and investigate whether this variability is related to children’s school readiness at the end of the preschool year, holding constant two additional measures of quality. Teacher-child interactions …
Moving Towards Accurate And Early Prediction Of Language Delay With Network Science And Machine Learning Approaches, Arielle Borovsky, Donna Thal, Laurence B. Leonard
Moving Towards Accurate And Early Prediction Of Language Delay With Network Science And Machine Learning Approaches, Arielle Borovsky, Donna Thal, Laurence B. Leonard
Purdue Center for Early Learning Faculty and Staff Publications
Due to wide variability of typical language development, it has been historically difficult to distinguish typical and delayed trajectories of early language growth. Improving our understanding of factors that signal language disorder and delay has the potential to improve the lives of the millions with developmental language disorder (DLD). We develop predictive models of low language (LL) outcomes by analyzing parental report measures of early language skill using machine learning and network science approaches. We harmonized two longitudinal datasets including demographic and standardized measures of early language skills (the MacArthur-Bates Communicative Developmental Inventories; MBCDI) as well as a later measure …
Facilitating Preservice Elementary Science Teachers’ Shift From Learner To Teacher Of Engineering Design-Based Science Teaching, Brenda Capobianco, Jeffrey Radloff, Jenna Clingerman
Facilitating Preservice Elementary Science Teachers’ Shift From Learner To Teacher Of Engineering Design-Based Science Teaching, Brenda Capobianco, Jeffrey Radloff, Jenna Clingerman
Purdue Center for Early Learning Faculty and Staff Publications
The role of engineering in science and mathematics education continues to emerge as a contributing factor to improving STEM education. Efforts across different countries include the integration of engineering in K-12 curriculum, after school programs, and inservice teacher professional development. Only recently have science teacher educators begun to introduce engineering in science teacher preparation programs. By incorporating novel curriculum and design-related experiences, we can begin to explore how preservice teachers not only learn about engineering, but more importantly, learn how to teach science using engineering design. In this study, we explore different ways 45 elementary preservice science teachers characterize and …
Study Of High-Performance Engineering Polymers Applied In Reciprocating Hermetic Refrigeration Compressors, Roger Nelson, Patrick Kunc, Laurent Hazard, Celso Kenzo Takemori, Diego Willian Da Silva, Edmar Baars, Gustavo Rafael Bernardes, Igor Leanardo Lessack, Luis Miguel Valdes Lopez
Study Of High-Performance Engineering Polymers Applied In Reciprocating Hermetic Refrigeration Compressors, Roger Nelson, Patrick Kunc, Laurent Hazard, Celso Kenzo Takemori, Diego Willian Da Silva, Edmar Baars, Gustavo Rafael Bernardes, Igor Leanardo Lessack, Luis Miguel Valdes Lopez
International Compressor Engineering Conference
Manufacturers of hermetic refrigeration compressors for domestic and commercial applications have been increasing the energy efficiency of their products systematically over the last decades through the continuous efforts of in-house research groups, universities and suppliers. This joint effort encompasses the technical fields of design, materials, processes, manufacturing, and simulation techniques, to achieve a multidisciplinary approach to compressor optimization as applied to refrigeration systems. Gains such as increased efficiency of the electric motor, reduction of bearing friction power loss, minimizing back flow on valves have already been addressed and the continuous search for new approaches have been proposed. This work presents …
Dynamic Simulations Of An Absorption System With Different Working Pairs At Chiller And Heat Pump Application, Jian Zheng, Jesús Castro, Carles Oliet
Dynamic Simulations Of An Absorption System With Different Working Pairs At Chiller And Heat Pump Application, Jian Zheng, Jesús Castro, Carles Oliet
International Refrigeration and Air Conditioning Conference
This work describes the dynamic simulation of a direct air-cooled single effect solar-driven absorption system and demonstrates the numerical results of the absorption system with different working pairs. The working pairs used in the chiller mode are LiBr-H2O and Carrol-H2O (Carrol contains LiBr and EG -Ethylene glycol-with a mass ratio at 4.5:1), while in the heat pump mode, EG is introduced in the evaporator to avoid freezing problem which limits the operation condition. The numerical modelling was implemented on a modular object-oriented simulation platform (NEST platform tool), which allows the linking between different components, considered as objects, which can be …
An Analytical Tool To Determine The Optimum Counterweights For Multi-Cylinder Reciprocating Compressors, Salih Güvenç Uslu, Kaan Şengül
An Analytical Tool To Determine The Optimum Counterweights For Multi-Cylinder Reciprocating Compressors, Salih Güvenç Uslu, Kaan Şengül
International Compressor Engineering Conference
The industrial air compressor market has been growing fast, thereby compelling the manufacturers to produce competitive products with less vibration and noise, which also better meet the customers’ expectations and related regulations. Both mechanical and hydrodynamical factors induce vibrations which have substantial negative effects in the maintenance periods and the lifetime of certain components. This study focuses on the balancing of the crankshaft by modifying the geometry of the counterweights. It aims at reducing the overall vibration of a compressor with the outputs of an analytical model which investigates the dynamics of the crankshaft of a W-type reciprocating compressor. The …
Oscillations Of A Ring-Constrained Charged Drop, Brayden W. Wagoner, Vishrut Garg, Michael T. Harris, Doraiswami Ramkrishna, Osman Basaran
Oscillations Of A Ring-Constrained Charged Drop, Brayden W. Wagoner, Vishrut Garg, Michael T. Harris, Doraiswami Ramkrishna, Osman Basaran
School of Chemical Engineering Faculty Publications
Free drops of uncharged and charged inviscid, conducting fluids subjected to small-amplitude perturbations undergo linear oscillations (Rayleigh, Proc. R. Soc. London, vol. 29, no. 196–199, 1879, pp. 71–97; Rayleigh, Philos. Mag., vol. 14, no. 87, 1882, pp. 184–186). There exist a countably infinite number of oscillation modes, n=2,3,…" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-variant: inherit; font-stretch: inherit; line-height: normal; font-family: inherit; vertical-align: baseline; display: inline-table; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; position: relative;">n=2,3,…n=2,3,…, each of which has a characteristic frequency and mode shape. …
Topology Optimization Of Microchannel Heat Sinks Using A Homogenization Approach, S. Ozguc, L. Pan, J. A. Weibel
Topology Optimization Of Microchannel Heat Sinks Using A Homogenization Approach, S. Ozguc, L. Pan, J. A. Weibel
CTRC Research Publications
Topology optimization for heat sink devices typically relies on penalization methods to ensure the fi- nal designs are composed of strictly solid or open regions. In this work, we formulate a homogenization approach wherein the partial densities are physically represented as porous microstructures. This formu- lation allows design of thermal management components that have sub-grid features and leverages ad- ditive manufacturing techniques that can produce such partially porous regions within the build volume. Topology optimization of a liquid-cooled microchannel heat sink is presented for a hotspot over a uniform background heat input. The partial densities are represented as arrays of …
Quantifying The Pathways Of Latent Heat Dissipation During Droplet Freezing On Cooled Substrates, J. E. Castillo, Y. Huang, Z. Pan, J. A. Weibel
Quantifying The Pathways Of Latent Heat Dissipation During Droplet Freezing On Cooled Substrates, J. E. Castillo, Y. Huang, Z. Pan, J. A. Weibel
CTRC Research Publications
When a liquid droplet freezes on a cooled substrate, the portion of latent heat released by ice formation that is not immediately absorbed by the supercooled liquid droplet is transferred to the solid substrate below the droplet and the surrounding air. It is important to quantify heat dissipation through these two pathways because they govern the propagation of frost between multiple droplets. In this paper, infrared (IR) thermography measurements of the surface of a freezing droplet are used to quantify the fraction of latent heat released to the substrate and the ambient air. These IR measurements also show that the …