Digital Commons Network^™

Forests Migrated Faster Than Trees Across North America, Akane Abbasi, Christopher Woodall, Javier Gamarra, Cang Hui, Nicolas Picard, Thomas Ochuodho, Sergio De-Miguel, Rajeev Sahay, Songlin Fei, Alain Paquette, Han Chen, Y Han, Ann Catlin, Jingjing Liang

FNR Annual Poster Competition

Mounting evidence suggests that geographic ranges of tree species worldwide are shifting under global environmental changes. Little is known, however, about whether and how this substantial migration of tree species may cause an overall type of forest as an ensemble of one or more tree species to migrate out of its geographic range. Here, using ground-sourced forest inventory data from 596,282 sample plots with repeated measurements, we classified forested regions in North America into eight biomes and 43 forest types, and further quantified forest migration – the shift in the geographic range of these forest types over the past 50 …

Putting The Green Back In Greenbacks: Opportunities For A Truly Green Stimulus, Farzad Taheripour, Maksym Chepeliev, Richard Damania, Thomas Farole, Nancy Lozano Gracia, Jason Daniel Russ

Department of Agricultural Economics Faculty Publications

Can countries reorient their productive capacity to become more environmentally friendly and inclusive? To investigate this question this paper uses a standard Input-Output modeling framework and data from 141 countries and regions to construct a new global dataset of employment, value-added, greenhouse gas (GHG) emissions (disaggregated into CO2 and Non-CO2 elements), and air pollution (including nine categories of air pollutants such as PM2.5) multipliers from supply side investments. We find that many of the traditional sectors in agriculture and industry have large employment multipliers, but also generate male dominant, lower skill employment, and tend to have higher emission multipliers. It …

Vision, Values, And Virtue: Forging A Moral Basis For Emerging Economies, Yeomin Yoon

KAUPA Letters

No abstract provided.

The Australia, United Kingdom, United States (Aukus) Nuclear Submarine Agreement: Potential Implications, Bert Chapman

FORCES Initiative: Strategy, Security, and Social Systems

The AUKUS Nuclear Submarine Agreement seeks to enhance multinational deterrence against Chinese geopolitical assertiveness by giving Australia nuclear powered submarines.

▶ This agreement will pose considerable cost and technical challenges for the Australia, the United Kingdom, and the United States.

▶ Estimates of when Australia will be able to deploy nuclear submarines range from 2030-2040.

▶ The U.S. and its allies will have to make challenging decisions about where to build AUKUS in Australia.

▶ There is debate as to whether efforts to deter China in the Asia-Pacific should include non-Anglosphere countries in that region.

▶ Consideration should be given …

Streamlining Project Development Through Planning & Environmental Linkages, Karen Hadley, Brett Lackey

Purdue Road School

As transportation agencies continue to explore ways to be more efficient in the project development process, they are embracing integrated methodologies like planning and environmental linkages. This tool is practical, yet highly effective and inclusive, and teams across the country are experiencing its value. This presentation will highlight a variety of use cases, discuss lessons learned and best practices, and specifically address how planning and environmental linkages can be applied in Indiana and the Midwest.

A Decade Later – Us 31 Mitigation, Summer R. Elmore

Purdue Road School

Significant transportation projects are designed and built, but that’s not the end of the story. Wetland and stream mitigation efforts, including monitoring and maintenance, may continue for a decade. This presentation will showcase INDOT mitigation sites—from their creation a decade ago to the awesome results—for projects like US-31. We’ll share timelines, photos, quality data, and challenges identified and addressed over the years.

On A Small Glossary Of Academic Anti-Intellectualism, William Díaz Villarreal

CLCWeb: Comparative Literature and Culture

This article presents the Small Glossary of Anti-intellectualism, where the most common rhetorical strategies and themes of contemporary academic anti-intellectualism are commented on. Anti-intellectualism is as old as intellectual life itself. However, its contemporary version is historically and sociologically rooted in the very structure of modern culture industry. It is a manifestation of a now universal pseudo-culture (Halbbildung) which, according to Adorno, has become the “dominant form of contemporary consciousness.” Arthur Schlesinger said that anti-intellectualism has long been the anti-Semitism of the businessman; today, anti-intellectualism is certainly the antisemitism of several social and political groups, including academia …

Inventing The Baby Saver: An Activity Systems Analysis Of Applied Engineering At The High School Level, Jessica Gale

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

Extant research and engineering education frameworks call for students to engage in personally meaningful engineering projects; however, there are few case studies documenting the work of young engineers working to design solutions to real-world problems that matter to them. This qualitative case study describes the work of a purposively selected group of high school engineering students (the InvenTeam) (n = 15) as they devote a school year to a particularly ambitious invention project: designing and prototyping a device to mitigate deaths occurring when children are left unattended in hot cars. Utilizing cultural historical activity theory as a theoretical and …

Getting By With A Little Help From Friends: A Qualitative Case Study Of Students’ Strategies For Coping With Failure In An Undergraduate Biology Laboratory Course, Soo Won Shim, Nancy Pelaez

Purdue University Libraries Open Access Publishing Fund

Recent emphasis on research competencies in undergraduate biology education means that more students are doing course-based research. Professional research scientists learn from failed research, but undergraduate students who encounter failure in their biology lab research may not always respond in ways that advance their learning. There is a need to examine individual students’ responses to failed research as they conduct investigations in an undergraduate lab course. Here, we report a qualitative research case study based on data from interviews and course work to examine five undergraduate students’ emotional responses, coping strategies, and perceptions of learning as they confronted failure in …

Vapor-Selective Active Membrane Energy Exchanger With Mechanical Ventilation And Indoor Air Recirculation, Andrew J. Fix, Bryan C. Pamintuan, James Braun, David M. Warsinger

School of Mechanical Engineering Faculty Publications

It is widely known that increasing outdoor air ventilation rates in buildings can help improve indoor air quality and mitigate the spread of diseases. However, cooling and dehumidifying outdoor air requires significantly more energy than treating indoor recirculated air. Recent developments in water vapor-selective membranes, which use a vapor partial pressure gradient to remove water vapor from air, offer a unique opportunity to provide highly efficient dehumidification in HVAC systems that can justify high outdoor air ventilation rates without drastic increases in energy consumption. This work presents an analysis of a novel membrane HVAC system referred to as the Active …

Observing Empathy In Informal Engineering Activities With Girls Ages 7–14, Susan M. Letourneau, Dorothy T. Bennett, Changchia Liu, Yessenia Argudo, Kylie Peppler, Anna Keune, Maggie Dahn, Katherine Mcmillan Culp

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

Empathy is a critical part of the engineering design process. It allows engineers to more deeply understand their clients’ perspectives and design solutions that meet the needs of diverse stakeholders. Studies also show that reframing engineering education to prioritize empathy for others can counteract stereotypes of engineering as impersonal and invite a wider range of identities into the field. This approach can help to address persistent gender disparities in engineering, which reflect a need for engineering education to increase its efforts to include girls’ perspectives. Informal learning environments have developed strategies for framing engineering problems in human-centered ways, but more …

Comparison Of The Performance Of The Observation-Based Hybrid Edmf And Edmf-Tke Pbl Schemes In 2020 Tropical Cyclone Forecasts From The Globalnested Hurricane Analysis And Forecast System, Andrew Hazelton, Jun A. Zhang, Sundararaman Gopalakrishnan

Department of Earth, Atmospheric, and Planetary Sciences Faculty Publications

Better representation of the planetary boundary layer (PBL) in numerical models is one of the keys to improving forecasts of TC structure and intensity, including rapid intensification. To meet this goal, our recent work has used observations to improve the eddy-diffusivity mass flux with prognostic turbulent kinetic energy (EDMF-TKE) PBL scheme in the Hurricane Analysis and Forecast System (HAFS). This study builds on that work by comparing a modified version of EDMF-TKE (MEDMF-TKE) with the hybrid EDMF scheme based on a K-profile method (HEDMF-KP) in the 2020 HAFS-globalnest model. Verification statistics based on 101 cases in the 2020 season demonstrate …

Early Elementary Students’ Use Of Shape And Location Schemas When Embedding And Disembedding, Laura Bofferding, Lizhen Chen, Sezai Kocabas, Mahtob Aqazade

Purdue Center for Early Learning Faculty and Staff Publications

Elementary students’ early development of embedding and disembedding is complex and paves the way for later STEM learning. The purpose of this study was to clarify the factors that support students’ embedding (i.e., overlapping shapes to form a new shape) and disembedding (i.e., identifying discrete shapes within another shape) through the use of filled shapes as opposed to shape frames. We recruited 26 Grade 1 students (~6–7 years old) and 23 Grade 3 students (~8–9 years old), asked them to work on two layered puzzle designs from the Color Code puzzle game, and interviewed them about their thinking processes. The …

Qualitative Findings From The Practice Of Outsourcing By The Aviation Technical Services Industry In Northern Europe: Comparison With Literature, Jukka Holkeri

Journal of Aviation Technology and Engineering

The outsourcing of maintenance and other technical services is a trend in both military and civil aviation. This article uses input from real outsourcing cases in Northern Europe to verify previous literature findings and to introduce new viewpoints to fill an identified research gap.

Interviews of deeply involved individuals from six cases were selected and analyzed using the Delphi method. The findings were synthesized using a framework that articulates contexts, observed outcomes, and generative mechanisms.

Many of the key literature findings were verified by this case analysis, but there were also some contradictions and new observations that had not been …

Influence Of Core Temperature On Psychomotor Performance During Cold Weather Military Training, Douglas Jones, Rebecca Weller, Stephen Eggan, Nicholas Roberts, Weimin Zheng, Jay Heaney, Timothy Dunn

Journal of Human Performance in Extreme Environments

Purpose: Cold environments may deteriorate psychomotor performance due to slowing of neuronal signals, distractions caused by pain and discomfort, and a loss of manual dexterity. The extent to which core temperature (T_c) influences psychomotor performance in the cold has not been established. Therefore, psychomotor performance and T_c were assessed during a cold weather military training exercise to evaluate this relationship.

Methods: Thirty-six military personnel (age: 26 ± 4 yr, ht: 175 ± 8 cm, wt: 79.1 ± 11.1 kg) participating in cold weather training volunteered for this study. Participants completed a 10-min immersion in cold (1°C) water, …

Walking On ‘‘Mars’’: Gendered Group Processes In Space Analog Missions, Inga Popovaite, Alison J. Bianchi

Journal of Human Performance in Extreme Environments

Most research on mixed-gender teams in space analog environments focuses on individual-level variation and overlooks structural causes of inequality. Status characteristics theory posits how socially recognized traits, such as gender, contribute to the formation of informal hierarchies by denoting perceived levels of competence to group members. We investigated gender as a status characteristic in groups in space analog environments. We used data from the Mars Desert Research Station (MDRS) and hypothesized that women crew members are less likely than men to be selected to participate in simulated extravehicular activities during a Mars simulation at the MDRS. We used reports and …

Library Publishing Directory 2022, Library Publishing Coalition

Library Publishing Directory

No abstract provided.

Towards A Burden-Free Implicit Authentication For Wearable Device Users, Bryan Lee, Sudip Vhaduri

Discovery Undergraduate Interdisciplinary Research Internship

The state of current knowledge-based wearable authentication systems requires users to physically interact with a device to initiate and validate their presence, thereby imposing a burden on the user. However, with the recent advancements of sensor technologies in consumer smart wearables (e.g., Fitbit and Apple watches), we were able to utilize vectors of statistical features extracted from the continuous stream of data from these IoT devices to implicitly validate a user's activities and its spatiotemporal context via the use of machine learning techniques. To improve the performance of our models, additional soft biometric data (i.e., respiratory sounds) was collected, and …

Password Managers: Secure Passwords The Easy Way, Alexander Master

CERIAS Technical Reports

Poor passwords are often the central problem identified when data breaches, ransomware attacks, and identity fraud cases occur. This Purdue Extension publication provides everyday users of Internet websites and computer systems with tools and strategies to protect their online accounts. Securing information access with password managers can be convenient and often free of cost, on a variety of devices and platforms. “Do’s and Don’ts” of password practices are highlighted, as well as the benefits of multi-factor authentication. The content is especially applicable for small businesses or non-profits, where employees often share access to systems or accounts.

Development Of In-Situ Sensing Method For The Monitoring Of Water-Cement (W/C) Values And The Effectiveness Of Curing Concrete, Rui He, Na (Luna) Lu, Jan Olek

JTRP Technical Reports

As the most widely used construction material, concrete is very durable and can provide long service life without extensive maintenance. The strength and durability of concrete are primarily influenced by the initial water-cement ratio value (w/c), and the curing condition during the hardening process also influences its performance. The w/c value is defined as the total mass of free water that can be consumed by hydration divided by the total mass of cement and any additional pozzolanic material such as fly ash, slag, silica fume. Once placed, field concrete pavements are routinely cured with liquid membrane-forming compounds. For laboratory study, …

Implementing Diversity Training Targeting Faculty Microaggressions And Inclusion: Practical Insights And Initial Findings, Ellen Ernst Kossek, Patrice M. Buzzanell, Brittany J. Wright, Cassondra Batz-Barbarich, Amy C. Moors, Charlene Sullivan, Klod Kokini, Andrew S. Hirsch, Kayla Maxey, Ankita Nikalje

Department of Management Faculty Publications

Despite the importance of faculty diversity training for advancing an inclusive society, little research examines whether participation improves inclusion perceptions and belongingness. Integrating training and diversity education literature concepts, this study examines the effectiveness of training targeting microaggressions in six STEM (Science, Technology, Engineering, Mathematics) oriented departments at a research-intensive university. Reactions data collected at the end of face-to-face training suggested that participation generally increased inclusion understanding. Self-assessments on inclusion concepts collected from 45% of participants before and three weeks after training suggest participation increases perceptions of the importance of inclusion, microaggression allyship awareness, inclusive behaviors, and organizational identification. Compared …

New Thermodynamic Mixture Models For Hfo-Containing Blends, Ian Bell

International Refrigeration and Air Conditioning Conference

No abstract provided.

Fractionation, Release Testing And Flammability Evaluation Of Novel Refrigerants Comprising R-744 And Fluorocarbons, David Charles Grundy, Vanessa Webster, Chris Seeton, Bob Low

International Refrigeration and Air Conditioning Conference

No abstract provided.

Mass Flow Rate Optimization Of A Reciprocating Inverter Compressors Oil Pump With Cfd Simulations, Semih Gürel, Melih Özdilek, Mehmet Onur Dinçer

International Compressor Engineering Conference

No abstract provided.

Experimental Investigation Of Liquid Slugging In The Suction Mufflers Of Hermetic Reciprocating Compressors, Teo B Balconi, Tadeu T Rodrigues, Cesar J Deschamps

International Compressor Engineering Conference

No abstract provided.

Development Of Twin-Screw Steam Compressor With Water Sealing, Bin Hu, Hong Cai, Di Wu, Junyu Liang, R.Z. Wang

International Compressor Engineering Conference

No abstract provided.

Computational Model Of Start-Up Process For Reciprocating Compressors, Eduardo Postingel Falcetti, Tiago Fernando Botega, Luben Cabezas Gomez

International Compressor Engineering Conference

No abstract provided.

Csa Exp07: Ongoing Progress, Lessons Learned, And Future Work In Load-Based Testing Of Residential Heat Pumps, Bruce Harley, Mark Alatorre, Christopher Dymond, Gary Hamer

International Refrigeration and Air Conditioning Conference

No abstract provided.

Cultivating Cultural Capitals In Introductory Algebra-Based Physics Through Reflective Journaling, Khanh Q. Tran, Ana Maria Barrera, Kim Coble, Mireya Arreguin, Marissa Harris, Alex Macha-Lopez, Michaela Perez, Alegra Eroy-Reveles

Purdue University Libraries Open Access Publishing Fund

At a large, diverse, hispanic-serving, master’s-granting university, the Alma Project was created to support the rich connections of life experiences of science, technology, engineering, and mathematics (STEM) students that come from racially diverse backgrounds through reflective journaling. Utilizing frameworks in ethnic studies and social psychology, the Alma Project aims to make learning STEM inclusive by affirming the intersectional identities and cultural wealth that students bring into STEM classrooms. Approximately once per month students who participate in the Alma Project spend 5–10 min at the beginning of class responding to questions designed to affirm their values and purpose for studying STEM …

Reinventing High School: Competency-Based Model For Learning In The 21st Century, Tahir M. Khan, Denise K. Whitford, Lisa Lambert Snodgrass, Sunnie L. Watson, Lisa B. Bosman

Indiana STEM Education Conference

Research shows that Black and Hispanic workers continue to be under-represented in the STEM (science, technology, engineering and mathematics) workforce. Purdue Polytechnic High School (PPHS) was established to achieve broader academic and workforce goals. PPHS fosters a sense of community for students by fostering diversity in teachers, focusing on project-based learning, and providing students with a constructive and collaborative space to explore their passions. To support career readiness, the school personalizes student learning and focuses on enhancing student problem-solving skills through a structured group engagement program called "passion projects". The school meets the academic requirements of the state while providing …