Digital Commons Network^™

Reliability Of Prospective And Retrospective Maternal Reports Of Prenatal Experiences, Emily P. Rolan, Olivia Robertson, Nikolina Nonkovic, Kristine Marceau

Purdue University Libraries Open Access Publishing Fund

Background

Extant perinatal research utilizes retrospective reports on the prenatal environment, but there are limited data on the validity of retrospective data compared with prospective data. The current study examined the reliability of birth mothers’ memory of prenatal stress and distress and perinatal risks at 6-months postpartum with maternal reports gathered across each trimester of pregnancy and explored whether recall varied with maternal socioeconomic status.

Methods

Surveys were collected from 34 pregnant women (M age = 29.14, SD = 5.06 years, 83% non-Hispanic White) on stress, distress, and pregnancy complications at 12(T1), 26(T2), and 38(T3) weeks of pregnancy, and at …

The Effect Of Allophonic Variability On L2 Contrast Perception: Evidence From Perception Of English Vowels, Alexis Zhou, Olga Dmitrieva, Daniel J. Olson

Purdue University Libraries Open Access Publishing Fund

Current frameworks of L2 phonetic acquisition remain largely underspecified with respect to the role of L1 allophonic variability in acquisition. Examining the role of L1 allophonic variability, the current study compared the perceptual discrimination of English /i-I/ and /E-æ/ by L1 Korean and L1 Mandarin speakers. Korean and Mandarin vowel inventories differ in that Mandarin employs significantly greater allophonic variation of the mid-region /E/ vowel. Results demonstrated worse perceptual accuracy by L1 Mandarin speakers for the /E-æ/ contrast than L1 Korean speakers. These results suggest that both L1 phonemic inventories and allophonic variation play a role in L2 phonetic acquisition.

Colored Sweet Bell And Tapered Pepper Cultivar Evaluation For High Tunnel Production In West-Central Indiana, 2022, Petrus Langenhoven, Lian Mahorith Duron Alvarado, Eduardo Jose Miranda Oviedo

Midwest Vegetable Trial Reports

Colored sweet bell-shaped and tapered peppers are a staple at the farmers' market. Many small and medium-sized farming operations in Indiana grow this summer crop. High tunnels allow growers to protect their crops and extend their growing season. Sweet peppers, in particular, benefit from the unique growing environment created by the high tunnel. Planting of peppers can start at least 2-4 weeks earlier in the spring, and production can continue into the fall until the first hard freeze. Pepper variety performance data for Indiana is not readily available. We are working hard to change that. Currently, we have evaluated twenty-five …

Spatiotemporal Distribution Change Of Online Reference During The Time Of Covid-19, Thom Gerrish, Ningning Nicole Kong

Libraries Faculty and Staff Scholarship and Research

The goal of this project was to identify the impact of the COVID-19 pandemic on the spatiotemporal distribution of the library’s online patrons, so that we could assess if the scheduled library reference hours are meeting the needs of the academic community. We collected each online reference patron’s location information via their IP address, as well as the timestamp of each online reference instance. The spatiotemporal distribution patterns were analyzed and compared before and after in-person instruction was suspended due to COVID-19 distance protocols and a closing of the campus in the 2020 spring semester. The results show that the …

Wind-Powered Continuous Reverse Osmosis Water Desalination, Aliah Adriana Binti Khairul Hisham

Discovery Undergraduate Interdisciplinary Research Internship

Water scarcity is a grave issue that is faced by lots of people worldwide. This phenomenon is further exacerbated by climate change, overpopulation, and water-intense industrial activities. To combat this issue, reverse osmosis (RO) water desalination system is broadly introduced in order to produce freshwater while maintaining the desired thermodynamic efficiency and economic feasibility. RO water desalination is a process of separating freshwater from salt water using a semi-permeable membrane. In status quo, there are various forms of energy present in RO system (e.g: hydraulic, mechanical, electrical energy, etc.) to power the hydraulic components. The conversion from one form of …

Digital Platform To Aid Youth Substance Abuse Prevention, Bingxuan Li

Discovery Undergraduate Interdisciplinary Research Internship

Through research and interviews, I discovered that a significant portion of students in Africa become drug addicts and drop out of school. The solution is to prevent youth substance abuse before it happens, so that more students in Africa may continue their education. With the strong motivation of expanding African student involvement in higher education, I participated DURI program to increase higher education rates in the Democratic Republic of the Congo, Africa. The local government is establishing rehabilitation centers to monitor at-risk students and prevent youth substance abuse, but due to extremely limited resources, it is critical to evaluate the …

Journal Of Pre-College Engineering Education Research (J-Peer) Annual Report From January 1, 2021, To December 31, 2021, Senay Purzer, Urvi Gupta

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

This annual report includes the Journal of Pre-College Engineering Education Research’s readership metrics and statistics, authorship metrics and trends, and our reflections on 2021. In the last year, the Journal of Pre-College Engineering Education Research started to publish special issues and the editorial team has been working to transform pre-college engineering education.

Jews And Science, Sander L. Gilman

The Jewish Role in American Life: An Annual Review

Jews and Science examines the complicated relationship between Jewish identities and the evolving meanings of science throughout the history of Western academic culture. Jews have been not only the agents for study of things Jewish, but also the subject of examination by “scientists” across a range of disciplines, from biology and bioethics to anthropology and genetics. Even the most recent iteration of Jewish studies as an academic discipline—Israel studies—stresses the global cultural, economic, and social impact of Israeli science and medicine.

The 2022 volume of the Casden Institute’s Jewish Role in American Life series tackles a range of issues that …

Political Rhetoric And The Media: The Year In C-Span Research, Volume 8, Robert X. Browning

The Year in C-SPAN Archives Research

This volume of The Year in C-SPAN Archives Research features analyses of the C-SPAN Video Library, a digital collection of 275,000 hours of indexed videos, texts, and spoken words. Included in this volume are papers on Rev. Jesse Jackson’s presidential campaign, rhetorical analysis of agriculture policy, and an examination of Senator Edward Kennedy’s positions on health care. The text also contains analysis of the “spectacle of committee hearings” and a look at the visuals used in the second Trump impeachment trial.

A Summer Of Mass Murder: 1941 Rehearsal For The Hungarian Holocaust, George Eisen

Purdue University Press Books

Most accounts of the Holocaust focus on trainloads of prisoners speeding toward Auschwitz, with its chimneys belching smoke and flames, in the summer of 1944. This book provides a hitherto untold chapter of the Holocaust by exploring a prequel to the gas chambers: the face-to-face mass murder of Jews in Galicia by bullets.

The summer of 1941 ushered in a chain of events that had no precedent in the rapidly unfolding history of World War II and the Holocaust. In six weeks, more than twenty thousand Hungarian Jews were forcefully deported to Galicia and summarily executed. In exploring the fate …

A Model For Equity-Oriented Prek-12 Engineering, Christine M. Cunningham, Gregory J. Kelly

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

In this paper, we address the societally important issue of developing a more equitable approach to preK-12 engineering education. Our primary emphasis is on K-8 grades—a time when first impressions of engineering may be developed. Calls for increased participation by all students, including those who have been historically marginalized, motivate the need for theoretically grounded ways of developing and assessing educational programs. This paper draws from sociocultural learning theory and applies four theoretical and empirical analyses to derive design principles for equity that can inform curriculum, instruction, and assessment of preK-12 engineering education programs. We present a model for equity-oriented …

A Framework For Multi-Dimensional Assessment Of The Impacts Of Overweight Vehicle Operations And A Corridor-Level Case Study, Maria Alicia Chung Li

Lyles School of Civil Engineering Graduate Student Reports

Ground freight transportation is essential for the economy of any region. The efficient movement of goods from one location to another connects businesses with suppliers and customers, that enhances commerce and ultimately boosts the economy. The high volume of freight that has been transported on the nation’s highway network has allowed the trucking industry to provide enormous socio-economic benefits. Unfortunately, these benefits come with some costs associated with the operation of overweight (OW) trucks, such as accelerated deterioration of highway pavement and bridge assets, and passenger and freight traffic safety degradation. Thus, to manage safety risk, traffic mobility, and infrastructure …

A New Gtseq Resource To Facilitate Multijurisdictional Research And Management Of Walleye Sander Vitreus, Peter T. Euclide, Wesley A. Larson, Matthew Bootsma, Loren M. Miller, Kim T. Scribner, Wendylee Stott, Chris C. Wilson, Emily K. Latch

Purdue University Libraries Open Access Publishing Fund

Conservation and management professionals often work across jurisdictional boundaries to identify broad ecological patterns. These collaborations help to protect populations whose distributions span political borders. One common limitation to multijurisdictional collaboration is consistency in data recording and reporting. This limitation can impact genetic research, which relies on data about specific markers in an organism's genome. Incomplete overlap of markers between separate studies can prevent direct comparisons of results. Standardized marker panels can reduce the impact of this issue and provide a common starting place for new research. Genotyping-in-thousands (GTSeq) is one approach used to create standardized marker panels for nonmodel …

On The Use Of Machine Learning For Causal Inference In Extreme Weather Events, Yuzhe Wang

Discovery Undergraduate Interdisciplinary Research Internship

Machine learning has become a helpful tool for analyzing data, and causal Inference is a powerful method in machine learning that can be used to determine the causal relationship in data. In atmospheric and climate science, this technology can also be applied to predicting extreme weather events. One of the causal inference models is Granger causality, which is used in this project. Granger causality is a statistical test for identifying whether one time series is helpful in forecasting the other time series. In granger causality, if a variable X granger-causes Y: it means that by using all information without …

Aphid Species Specializing On Milkweed Harbor Taxonomically Similar Bacterial Communities That Differ In Richness And Relative Abundance Of Core Symbionts, Laramy S. Enders, Thorsten Hansen, Kirsten Brichler, John J. Couture, Elizabeth French

Purdue University Libraries Open Access Publishing Fund

Host plant range is arguably one of the most important factors shaping microbial communities associated with insect herbivores. However, it is unclear whether host plant specialization limits microbial community diversity or to what extent herbivores sharing a common host plant evolve similar microbiomes. To investigate whether variation in host plant range influences the assembly of core herbivore symbiont populations we compared bacterial diversity across three milkweed aphid species (Aphis nerii, Aphis asclepiadis, Myzocallis asclepiadis) feeding on a common host plant (Asclepias syriaca) using 16S rRNA metabarcoding. Overall, although there was significant overlap in taxa detected across all …

Gait Phase Estimation Of Unsupervised Outdoors Walking Using Imus And A Linear Regression Model, Ahmed Soliman, Guilherme A. Ribeiro, Andres Torres, Li-Fan Wu, Mo Rastgaar

Purdue University Libraries Open Access Publishing Fund

Human gait analysis and detection are critical for many applications, including wearable and rehabilitation robotic devices, reducing or tracking injury risk. The proposed work allows researchers to study the gait phase of human subjects in an unsupervised outdoor environment without the need for fixed thresholds and sensor-embedded insoles. We present an experimental protocol to label gait events based on patterns in human subjects from two body-worn inertial measurement units (IMUs). Gait patterns are developed using a force plate and a motion capture system. Upon defining the gait pattern, human subjects walk outdoors for forty minutes to train and test a …

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 …

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 …