Digital Commons Network^™

Assessing The Influence Of Glass Properties On Cabin Solar Heating And Range Of An Electric Vehicle Using A Comprehensive System Model, A. K. Penning, Justin A. Weibel

CTRC Research Publications

No abstract provided.

Analytical Prediction Of Stress And Strain In Adhesive Tube-To-Tube Joints Under Thermal Expansion/Contraction, H. Liu, Justin A. Weibel, E A. Groll

CTRC Research Publications

No abstract provided.

Effect Of Thermal Capacitance On Microchannel Heat Sink Response To Pressure Drop Oscillations, M. D. Clark, M. E. Rahman, Justin A. Weibel, S. V. Garimella

CTRC Research Publications

No abstract provided.

A Mechanistic Model To Predict Saturated Pool Boiling Critical Heat Flux (Chf) In Confined Geometries, A. A. Alsaati, D. M. Warsinger, Justin A. Weibel, A. M. Marconnet

CTRC Research Publications

No abstract provided.

Experimental Study Of Topology Optimized, Additively Manufactured Microchannel Heat Sinks Designed Using A Homogenization Approach, S. Ozguc, T F.G. Teague, L. Pan, Justin Weibel

CTRC Research Publications

No abstract provided.

A Framework For Examining The Relationship And Classifying Instructional Strategies, Methods, And Techniques, Victoria L. Lowell, Lucia Urena-Rodriguez

Purdue University Libraries Open Access Publishing Fund

Globally, educators and researchers use different terms to describe instructors’ approaches when presenting instructional material in formal and informal settings. Terms commonly used to describe instructional approaches include teaching/instructional strategy, teaching/instructional method, and teaching/instructional technique. Although practicing educators and researchers use these words interchangeably, they have different meanings, leading to confusion regarding the relationship between these approaches and their proper usage when describing instructional practices. The research-to-practice gap in all fields exacerbates the issue, as practitioners and researchers may use different terms. As a result, there is a need for consistency in the terms used to describe instructional approaches across …

Us Climate Policy Yields Water Quality Cobenefits In The Mississippi Basin And Gulf Of Mexico, Shan Zuidema, Jing Liu, Maksym Chepeliev, David R. Johnson, Uris Baldos, Steve Frolking, Christopher J. Kucharik, Wilfred M. Wollheim, Thomas Hertel

Department of Agricultural Economics Faculty Publications

We utilize a coupled economy–agroecology–hydrology modeling framework to capture the cascading impacts of climate change mitigation policy on agriculture and the resulting water quality cobenefits. We analyze a policy that assigns a range of United States government’s social cost of carbon estimates ($51, $76, and $152/ton of CO2-equivalents) to fossil fuel–based CO2 emissions. This policy raises energy costs and, importantly for agriculture, boosts the price of nitrogen fertilizer production. At the highest carbon price, US carbon emissions are reduced by about 50%, and nitrogen fertilizer prices rise by about 90%, leading to an approximate 15% reduction in fertilizer applications for …

Vistac Toward A Unified Multimodal Sensing Finger For Robotic Manipulation, Sheeraz Athar, Gaurav Patel, Zhengtong Xu, Qiang Qiu, Yu She

School of Industrial Engineering Faculty Publications

Tactile sensors are crucial in providing contact geometry information necessary for object manipulation. However, it remains highly nontrivial for a tactile sensor to be able to perceive a distant object before manipulation. In this work, we present an innovative robotic finger, VisTac, which seamlessly combines high-resolution tactile and visual perception in a single unified device, while adhering to essential mechanical constraints, such as a human-finger-like wedge-shaped top, vital for manipulation tasks. Furthermore, we discuss the fabrication of a key component in the device; the semitransparent membrane with light-dependent opacity, thus enabling the contact surface to effortlessly transition between visual and …

The Aesthetics Of Writing Center Assessment: An Interactive Mural, Vicki Kennell, Noah Patterson

Purdue Writing Lab/Purdue OWL Presentations

This wall mural combines data and images into a holistic rendering of a writing center’s year of change. It showcases the versatility of writing centers, while highlighting the beauty of the work through the aesthetics of a mural.

Topological Tropology Of V.S. Naipaul’S Islamic Travelogues And Daniel Pipes’ Islamic History: Ahistorical Historicism, Md. Habibullah

CLCWeb: Comparative Literature and Culture

Nobel laureate V. S. Naipaul’s (1932-2018) first Islamic travelogue Among the Believers: An Islamic Journey (1981) contains his experience of a visit from August 1979 to February 1980 to the four non-Arab Muslim-majority countries – Iran, Pakistan, Malaysia, and Indonesia. Similarly, his last Islamic travelogue Beyond Belief: Islamic Excursions among the Converted Peoples (1998) has a description of another visit to the same countries for five-month in 1995. Concurrently, Daniel Pipes (1949-), an American historian, published his doctoral dissertation, Slave Soldiers and Islam: The Genesis of a Military System (1981), which represents Islamic culture as the first instigator of …

Playing With Time: Writing History In Neo-Zionist Hebrew Literature, Huiruo Li

CLCWeb: Comparative Literature and Culture

The term neo-Zionism can be used to group ideologically much of contemporary Hebrew literature. However, since neo-Zionism shares similar critical tools with post-Zionism, while also sharing a common political vision with Zionism, it has been difficult to find the definitive signifiers of neo-Zionist writing. This paper offers a way to determine the nuanced ideological inclination of Hebrew literature: the presentation of time. First, this paper recognizes the metamorphosis of time in Israeli literary history that reflects the writers’ historical view of the Zionist agenda. Zionist Hebrew literature was engaged in re-establishing Jewish historical time by emphasizing the relationship between time …

The Animal In The Wild In Hwang Sun-Mi’S The Hen Who Dreamed She Could Fly, Sarah Yoon

CLCWeb: Comparative Literature and Culture

Hwang Sun-mi’s The Hen Who Dreamed She Could Fly has become a contemporary classic children’s story in Korea since its original publication in 2000. Since then, the story has been translated and redesigned with new illustrations in almost thirty different countries (Y. Kim). The Hen Who Dreamed She Could Fly centers on a hen that raises a duckling as her “baby,” with the story drawing upon a rich reservoir of cultural associations between humans and nature in East Asian traditions. In this story, the hen leaves the human-dominated barnyard, based on profit, exploitation, and competition, for a reconnection with moral …

A Positioning Theory Analysis Of Interaction Surrounding Design Failures In An Elementary Engineering Club, Katarina N. Silvestri, Mary B. Mcvee, Lynn E. Shanahan, Kenneth English

Journal of Pre-College Engineering Education Research (J-PEER)

This qualitative study applies Positioning Theory to identify positions that mediate the experiences of design failure within the context of an afterschool engineering club (EC) with elementary students diverse in language, race, ethnicity, gender, and academic abilities. We ask: (1) What kinds of structural design failure and failure responses did participants in EC experience? and (2) What are students’ and teachers’ positions in relation to responses to design failure? Types of positions (e.g., builder, tinkerer, idea-elicitor, director, observer) were identified in relation to children’s and teachers’ actions and speech in response to structural design failure during EC. Participants included 12 …

Editorial, Joseph P. Hupy, Mary M. Fink

Journal of Aviation Technology and Engineering

Editorial for JATE 11.2.

How To Treat Alzheimer’S Disease By Boosting Glymphatic Flow: Simulations In A New Computational Model, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Working Papers

This study exercises a new mathematical model to search for unappreciated therapeutic targets in Alzheimer’s disease. The model describes detailed mechanisms underlying the glymphatic pump mechanism, which removes toxic proteins of Alzheimer’s disease from the interstitial fluid of the brain. It shows that the glymphatic pump is driven by the amplitude of intracranial pressure pulsations in the subarachnoid space, which are correlated with the arterial pulse and modulated by many other factors. Implementing ways to increase intracranial pressure pulses quickly comes to mind as a potential treatment strategy. Specific interventions include drugs that increase arterial pulse volume and small devices …

The Challenge Of Misclassification Error In The European Union’S Deforestation Regulation, Caleb T. Gallemore

I-GUIDE Forum

The European Union’s Regulation 2023/1115, which requires firms to undertake significant due diligence efforts to minimize the import of deforestation-linked commodities into the Union, relies heavily on cutting-edge geospatial technologies. While several studies of zero-deforestation supply chain efforts have pointed to the political and logistical challenges such initiatives face, there has been less consideration of the role that the measurement errors that are unavoidable in geospatial technologies might affect emerging zero-deforestation governance systems. Using information on misclassification error rates for forest areas from 20 recent validation studies of global land-cover datasets, I simulate the misclassification risks we might expect from …

A Spatiotemporal Synthesis Of High-Resolution Salinity Data With Aquaculture Applications, Dong Liang, Jeremy M. Testa, Cassie Gurbisz, Lora A. Harris

I-GUIDE Forum

Technological advancement and the desire to better monitor shallow habitats in the Chesapeake Bay, Maryland, United States led to the initiation of several high-resolution monitoring programs such as ConMon (short for “Continuous Monitoring”) measuring oxygen, salinity, and chlorophyll-a at a 15-minute frequency. These monitoring efforts have yielded an enormous volume of data and insight into the condition of the tidal water of the Bay. But this information is underutilized in documenting the fine-scale variability of water quality, which is critical in identifying the link between water quality and ecological responses, partly due to the challenges in integrating monitoring data collected …

Applications Of Generative Ai Technologies As A Simulator In Cybersecurity, Young B. Choi

KAUPA Letters

As AI technologies continue to be applied in various domains, their application in education is becoming a globally significant issue. This paper aims to explore the implementation of Generative AI technologies as a simulator in teaching and learning within the on campus and online classroom settings with Cybersecurity example scenarios.

The Misuse And Abuse Of The Concept Of Civilization, Yeomin Yoon

KAUPA Letters

No abstract provided.

Neural Mechanisms For The Localization Of Unexpected External Motion, Suma Chinta, Scott R. Pluta

Purdue University Libraries Open Access Publishing Fund

To localize objects during active sensing, animals must differentiate stimuli caused by volitional movement from real-world object motion. To determine a neural basis for this ability, we examined the mouse superior colliculus (SC), which contains multiple egocentric maps of sensorimotor space. By placing mice in a whisker-guided virtual reality, we discovered a rapidly adapting tactile response that transiently emerged during externally generated gains in whisker contact. Responses to self-generated touch that matched self-generated history were significantly attenuated, revealing that transient response magnitude is controlled by sensorimotor predictions. The magnitude of the transient response gradually decreased with repetitions in external motion, …

Molecular Basis Of Manufacturing, Stephen Byrn, Kari Clase

The Proceedings of the BIRS Community

This paper describes the Biotechnology Innovation and Regulatory Science course named The Molecular Basis of Manufacturing. This course covers drug manufacture including excipients, basic formulation, basic DOE analysis, and analysis of the final drug product (typically tablets or capsules). Molecular interpretation of formulations is discussed. The modules in the course are described as well as other course materials including quizzes and discussion questions. This paper will assist with the development of course in this area throughout the entire world.

Hmoob Eldership As Pedagogy: Reclaiming Hmoob Knowledge As Hmoob Education, Thong Vang

Journal of Southeast Asian American Education and Advancement

For centuries non-HMoob people and scholars have sought to label and define who HMoob people are, but this paper reclaims and repositions HMoob people as agentic and reinforces our people’s power to define themselves as we have for centuries. This paper also addresses problematic discourse about HMoob people and HMoob education, such as “peb HMoob tsis muaj kev kawm”1 or “peb tsis muaj kev txawj hab kev ntse le lwm paab lwm pawg.”2 Departing from such deficit discourse, this paper explores HMoob eldership as pedagogy as one way that HMoob people have valid knowledge systems. HMoob eldership as pedagogy examines …

Toward Hmoob-Centered Inquiries: Reclaiming Hmoob American Educational Scholarship And Curriculum, Choua P. Xiong, Kaozong N. Mouavangsou

Journal of Southeast Asian American Education and Advancement

As the intersecting field of HMoob (Hmong/Mong) Studies/Hmong American Studies, Southeast Asian American Studies, and Education Studies grow, there is also an increased desire to learn, read, and produce scholarship by HMoob people. Throughout our graduate journeys and as early career scholars and educators at the intersections of Critical HMoob Studies and Education Studies, we—Choua and Kaozong—have yearned for scholarship on HMoob that is not just about representation but includes research that recognizes HMoob strengths and assets. Specifically, we craved scholarly knowledge that employed HMoob assets to interrogate racist, colonial discourses and decenter whiteness. This special issue centers HMoob (Hmong/Mong) …

A New Empirical Law For The Prediction Of The Zero-Lift Pitching Moment Coefficient Of Swept And Tapered Wings, Mondher Yahyaoui

Journal of Aviation Technology and Engineering

A new empirical law for the prediction of the zero-lift pitching moment coefficient of trapezoidal wings with linear twist and constant taper and sweep in subsonic flow is introduced. This law is quite general in that it does not rely on the use of charts and spans the normal range of values of taper ratio, aspect ratio, and sweep for subsonic aircraft. It does not, however, accommodate different airfoils along the wingspan and only positive sweep has been considered. The empirical law was first derived for the incompressible regime and then an additional empirical law for the compressibility effect has …

Connecting With The Outside World: Psychosocially Supportive Aspects Of Operational Communication Between Isolated Crews In Space And Mission Control On The Ground, Dennis J. Frederiksen

Journal of Human Performance in Extreme Environments

Radio-based communication between crew members in space and mission control centers on the ground has the operational purpose of supporting the safe and effective execution of missions in space. Space-to-ground communication also, however, constitutes one of the relatively few interpersonal relationships astronauts have during missions and in addition to its operational purpose, this communication can support astronauts’ wellbeing. The purpose of this paper is to identify psychosocially supportive aspects of operational space-to-ground communication between astronauts in space and spacecraft communicators on the ground. Through qualitative analysis of authentic mission communication, this paper identifies two supportive aspects and develops a terminology …

Teaching And Collecting Technical Standards: A Handbook For Librarians And Educators, Chelsea Leachman, Erin M. Rowley, Margaret Phillips, Daniela Solomon

Purdue Information Literacy Handbooks

Technical standards are a vital source of information for providing guidelines during the design, manufacture, testing, and use of whole products, materials, and components. To prepare students—especially engineering students—for the workforce, universities are increasing the use of standards within the curriculum. Employers believe it is important for recent university graduates to be familiar with standards. Despite the critical role standards play within academia and the workforce, little information is available on the development of standards information literacy, which includes the ability to understand the standardization process; identify types of standards; and locate, evaluate, and use standards effectively.

Libraries and librarians …

Observation Of Self-Patterned Defect Formation In Atomic Superfluids–From Ring Dark Solitons To Vortex Dipole Necklaces, Hikaru Tamura, Cheng-An Chen, Chen-Lung Hung

Purdue University Libraries Open Access Publishing Fund

Unveiling nonequilibrium dynamics of solitonic and topological defect structures in a multidimensional nonlinear medium is a current frontier across diverse fields. One of the quintessential objects is a ring dark soliton (RDS), whose dynamics are expected to display remarkable interplay between symmetry and self-patterned topological defect formation from a transverse (snake) instability, but it has thus far evaded full experimental observations. Here, we report an experimental realization of RDS generation in a two-dimensional atomic superfluid trapped in a circular box. By quenching the confining box potential, we observe an RDS emitted from the edge and its peculiar signature in the …

Optimization Of Extreme Ultra-Violet Light Emitted From The Co2 Laser-Irradiated Tin Plasmas Using 2d Radiation Hydrodynamic Simulations, Atsushi Sunahara, Ahmed Hassanein, Kentaro Tomita, Shinichi Namba, Takeshi Higashiguchi

Purdue University Libraries Open Access Publishing Fund

We studied Extreme Ultra-Violet (EUV) emission characteristics of the 13.5 nm wavelength from CO2 laser-irradiated pre-formed tin plasmas using 2D radiation hydrodynamic simulations. Our results indicate that when a CO2 laser irradiates pre-formed tin plasma, the heated plasma expands towards the surrounding plasma, steepening the density at the ablation front and lowering the density near the laser axis due to the transverse motion of the plasma. Consequently, the laser absorption fraction decreases, and the contribution to EUV output from the ablation front becomes dominant over that from the low-density plasmas. We estimated that an EUV conversion efficiency of 10% from …

A Decision Aid To Help Farmers Find The Minimum Cost Fertilizer Combination, Gregory Ibendahl

Journal of Applied Farm Economics

Fertilizer recommendations are typically given as the pounds of nitrogen, phosphorus, and potassium needed per acre. Many crop budgets also list the fertilizer costs in terms of the N, P, and K. This can cause a problem for farmers as they must purchase their fertilizer in products that in some cases contain multiple nutrients. These multinutrient fertilizers make it difficult or impossible to calculate a price per unit of a nutrient. Thus, finding the minimum cost fertilizer combination by using a price per nutrient approach may not work. This paper shows how a linear programming approach will always give the …

Eipeck: Assessing Educators’ Pedagogical Content Knowledge For Engineering Integration In K-12, Pilar Pazos, Francisco Cima Cohuo, Jennifer Kidd, Kristie Gutierrez, Krishnanand Kaipa, Orlando Ayala

Journal of Pre-College Engineering Education Research (J-PEER)

Global efforts are underway to include engineering in pre-college curricula. In the USA, this pursuit led to the inclusion of engineering content in the most recent version of the Next Generation Science Standards that guide K-12 science. As these standards become part of the K-12 curriculum, teachers face the challenge of gaining basic engineering literacy, while developing the associated inclusive pedagogies necessary to integrate engineering content into their classrooms. In this context, teacher preparation programs can benefit from easy-to-implement tools that measure preservice teachers’ readiness to integrate engineering content in their future classrooms. This work describes the development and validation …