Digital Commons Network^™

Second Reaction: Voices Of Melanin, Carlota Holder

First Opinions, Second Reactions

No abstract provided.

First Opinion: Words Are More Powerful When Shared, Allison Segarra Hansen

First Opinions, Second Reactions

No abstract provided.

Second Reaction: The Power Of Standing Up For Yourself, Jordyn Dewey

First Opinions, Second Reactions

No abstract provided.

First Opinion: The Complications Of Being Charlotte: Alex Gino’S Melissa, Nicholas E. Husbye

First Opinions, Second Reactions

No abstract provided.

Second Reaction: Gender Queer: A Unique Insight, Aaron M. Wilder

First Opinions, Second Reactions

No abstract provided.

First Opinion: Gender Queer: A Memoir Offers Conversation About Queerness, Marie Lewis

First Opinions, Second Reactions

No abstract provided.

Second Reaction: A Mother-Daughter Perspective, Elizabeth Dougherty, Maddie Dougherty

First Opinions, Second Reactions

No abstract provided.

First Opinion: Anne Frank As She Was, The Value Of An Uncensored Voice, Audrey Taylor

First Opinions, Second Reactions

No abstract provided.

Second Reaction: How Do You Teach What Is Silent To Some And Reality To Others?, Megan Paulk

First Opinions, Second Reactions

No abstract provided.

First Opinion: White Symbols Of Hope Or Threats To Black Youth’S Self-Perception, Breanya Hogue

First Opinions, Second Reactions

No abstract provided.

Editorial: A Call To Share Challenged & Banned Books, Allison Segarra Hansen

First Opinions, Second Reactions

No abstract provided.

Children’S Engineering Identity Development Within An At-Home Engineering Program During Covid-19, Amber Simpson, Peter N. Knox

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

The culture of engineering and the culture of formal learning environments often make it difficult for individuals to develop an engineering identity. Conversely, recent research points to the home environment as an alternative setting to support disciplinespecific identity development of children, while less is known regarding the identity development of children as engineers. Therefore, the purpose of this study was to explore the development of children’s engineering identity through the co-creation of engineering concepts and engagement with engineering design thinking and processes with family members in home environments during the COVID-19 pandemic. We conducted interviews with nine families—nine parents and …

A Constrained Adaptive Active Noise Control Filter Design Method Via Online Convex Optimization, Yongjie Zhuang, Yangfan Liu

Publications of the Ray W. Herrick Laboratories

In practical active noise control (ANC) applications, various types of constraints may need to be satisfied, e.g., robust stability, disturbance enhancement, and filter output power constraint. Some adaptive filters such as leaky LMS have been developed to apply required constraints indirectly. However, when multiple constraints are required simultaneously, satisfactory noise performance is difficult to achieve by tuning only one leaky factor. Another filter design approach that may achieve better noise control performance is to solve a constrained optimization problem. But the computational complexity of solving such a constrained optimization problem for ANC applications is usually too high even for offline …

Experimental Study And Modeling Of The Level-Dependent Acoustical Behavior Of Granular Particle Stacks, Guochanaho Song, Zhuang Mo, J Stuart Bolton

Publications of the Ray W. Herrick Laboratories

Researchers have previously observed elastic modulus softening and increased damping when granular particle stacks are exposed to progressively increasing acoustical excitation levels. However, the level-dependent behavior of granular particle stacks is not well understood, and there are no comprehensive approaches to modeling those effects. Earlier, the authors measured the absorption coefficient of a stack of one type of granular activated carbon stack by using signals having different bandwidths and levels. In the present work, five more types of granular particle stacks were studied to validate and generalize the previous conclusions: i.e., both the modulus softening, and increased damping can be …

A Finite Difference Approach To Study The Impact Of Boundary Conditions On The Acoustical Behavior Of Particle Stacks, Zhuang Mo, Guochenhao Song, Tongyang Shi, J Stuart Bolton

Publications of the Ray W. Herrick Laboratories

The responses of particle stacks to incident sound waves show interesting features that are very different from those of a homogeneous continuum. Further studies of the acoustical performance of particle stacks can help both to discover potential noise control applications of these types of materials, and to help provide better insight into the internal status of the particle stacks. In the current study, a finite difference (FD) model for a particle stack was built based on the Biot poro-elastic theory. The intention in developing this model is to describe the acoustical behavior of particle stacks with consideration of not only …

Dose-Response Of Plasticulture Summer Squash And Triploid Watermelon To Fomesafen Applied Pre-Transplanting, Jeanine Arana, Stephen L. Meyers, William G. Johnson, Wenjing Guan

Department of Horticulture & Landscape Architecture Faculty Publications

Dose-response trials to determine the tolerance of summer squash and watermelon to fomesafen applied (over the top of black polyethylene mulch and respective row middles) pre-transplanting were performed between 2020 and 2021 at three Indiana locations: the Meigs Horticulture Research Farm (MEIGS), the Pinney Purdue Agricultural Center (PPAC), and the Southwest Purdue Agricultural Center (SWPAC). Summer squash trials were performed at the MEIGS and PPAC locations, and watermelon trials were performed at the MEIGS and SWPAC locations. The experiments for both summer squash and watermelon had a split-plot arrangement in which the main plot was herbicide rate, and the subplot …

Classifying Cadmium Contaminated Leafy Vegetables Using Hyperspectral Imaging And Machine Learning, Augusto Souza, Maria Zea Rojas, Yang Yang, Linda Lee, Lori Hoagland

Purdue University Libraries Open Access Publishing Fund

Cadmium (Cd) is a toxic element that can accumulate in edible plant tissues and negatively impact human health. Traditional Cd quantification methods are time-consuming, expensive, and generate a lot of toxic waste, slowing development of methods to reduce uptake. The objective of this study was to determine whether hyperspectral imaging (HSI) and machine learning (ML) can be used to predict Cd concentrations in plants using kale (Brassica oleracea) and basil (Ocimum basilicum) as model crops. The experiments were conducted in an automated phenotyping facility where all environmental conditions except soil Cd concentration were kept constant. …

Student Engagement In An Online Engineering Afterschool Program During The Covid-19 Pandemic, Virginia Snodgrass Rangel, Jerrod A. Henderson, Chelsea Martinez, Rick Greer

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

The COVID-19 pandemic forced much of schooling online and limited students’ access to informal learning opportunities such as afterschool programs. The purpose of this study was to investigate how fourth- and fifth-grade students engaged in an online engineering program and what factors influenced their engagement. We drew on a four-dimensional model of student engagement to describe how students engaged in the afterschool engineering program and to identify the factors that enhanced or inhibited engagement. Using a case study design, we drew on interviews with six program mentors and ten students and observation data from weekly Zoom sessions throughout the 2020–2021 …

Impact Week Report Summer 2022: A Report By The Impact Evaluation Team, Evaluation And Learning Research Center

IMPACT Reports

This is the 2022 report of Instruction Matters: Purdue Academic Course Transformation (IMPACT) Week. IMPACT was created in 2010, and is a large collaborative initiative on the Purdue West Lafayette campus involving multiple key partners across campus including the Office of the Provost, Center for Instructional Excellence (CIE), Purdue Online (PO), Purdue Libraries and School of Information Studies (Libraries), the Evaluation and Learning Research Center (ELRC), and Institutional Data Analytics and Assessment (IDA+A). IMPACT works with instructors to redesign large enrollment, foundational courses with the aim of engaging students more fully in their learning and creating a more student-centered environment, …

Us Veterinarians’ Perceptions Of Discussing Covid-19 Vaccination With Animal Owners During Routine Visits, Randolph Duane Hubach, Rachel Tonne

Purdue University Libraries Open Access Publishing Fund

COVID-19 vaccination uptake is disproportionately lower among rural, politically conservative, and underserved individuals in the United States. Engaging this population requires leveraging unique potential human health advocates, like veterinarians. Between September and October 2021, 103 veterinarians responded to open-ended prompts to assess providers' willingness and potential barriers to discussing COVID-19 vaccination within a veterinary visit. Veterinarians perceived they had a public health role in providing reliable and accurate COVID-19 information, including information related to approved vaccines. However, veterinary practitioners were aware of numerous potential barriers to having such discussions within a clinical visit (e.g., scope of practice concerns, shifting focus …

The Price Of Longevity - Empirical Evidence From Road Pavements, Hanna Kemaw

Lyles School of Civil Engineering Graduate Student Reports

The vast network of county, city and town roads, represent a big part of public assets in most states and often account for a significant share of the public spending on roads. This spending on local road infrastructure help to build, operate, and preserve such infrastructure and therefore provide critical accessibility and mobility to the residents of counties, towns and cities. With the ever-growing volumes of personal and commercial traffic at local roads, the task of maintaining satisfactory levels of service at local roads has become more challenging, and this issue is exacerbated by limited resources, asset aging, and increasing …

Using Driving Simulator Environment To Determine Interactions Between User Behavior And Infrastructure Design Under Autonomous Vehicles, Viswa Sri Rupa Anne, Einat Tenenboim, Srinivas Peeta

Center for Connected and Automated Transportation

No abstract provided.

Lane Management In The Era Of Cav Deployment, Sania E. Seilabi, Mohammadhosein Pourgholamali, Jiaming Wang, Mohammad Miralinaghi, Shreyas Sundaram, Samuel Labi

Center for Connected and Automated Transportation

No abstract provided.

Adapting Land Use And Infrastructure For Automated Driving, Chaojie Wang, Einat Tenenboim, Srinivas Peeta

Center for Connected and Automated Transportation

No abstract provided.

Non-Connected Vehicle Detection Using Connected Vehicles, Yongyang Liu, Anye Zhou, Yu Wang, Srinivas Peeta

Center for Connected and Automated Transportation

No abstract provided.

Is Tanstaafl Always Valid?, Yeomin Yoon

KAUPA Letters

No abstract provided.

Identifying Dis/Misinformation On Social Media: A Policy Report For The Diplomacy Lab Strategies For Identifying Mis/Disinformation Project, Bethany S. Mcgowan, Matthew Hannah, Sofia Babcock, Katelyn Biggs, Lara Chuppe, Christina Galiatsatos, Jannine Huby, Michael Kuczajda, Bennet Miller, Stephanie Perun, Amanda Shie, Alicia Stevance, Andrew Yason, Charlotte Yeung

Libraries Faculty and Staff Scholarship and Research

Dis/misinformation was a major concern in the 2016 U.S. presidential election and has only worsened in recent years. Even though domestic actors often spread dis/misinformation, actors abroad can use it to spread confusion and push their agenda to the detriment of American citizens. Even though this report focuses on actors outside the United States, the methods they use are universal and can be adapted to work against domestic agents. A solid understanding of these methods is the first step in combating foreign dis/misinformation campaigns and creating a new information literacy paradigm.

This report highlights the primary mechanisms of dis/misinformation: multimedia …

Harmony Between Science And Technology, And Art: Peace & Safety(平安), Young B. Choi

KAUPA Letters

No abstract provided.

Institute Of Korean Studies, Freie Universität Berlin, Germany 베를린 자유대학교 한국학과와 한국학연구소, Moon-Sook Park

KAUPA Letters

No abstract provided.

Big Data Security And Privacy Issues With Nosql Movement, Young B. Choi

KAUPA Letters

As the growth rate of data storage caused by Big Data-oriented IT environment is becoming exponential, the security and privacy issues of Big Data are emerging on the horizon significantly. Big Data security and privacy, NoSQL movement, and feasible big data security and privacy solutions and future security and privacy software development trends of IT industry to enhance Big Data security and privacy are discussed.