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Tourists’ Meaning Of Sustainability As A Tool For Segmentation. A Biosphere Reserve Case Study, Juan Ignacio Pulido-Fernández, Yaiza López-Sánchez, Isabel Carrillo-Hidalgo, Jose Luis Durán-Román

ITSA 2022 Gran Canaria - 9th Biennial Conference: Corporate Entrepreneurship and Global Tourism Strategies After Covid 19

This paper provides empirical evidence on the potential use of the meaning of sustainability for the tourist in segmentation studies. The analysis has been applied to a nature destination, specifically, in the “Sierras de Cazorla, Segura y Las Villas” Biosphere Reserve. In the first place, this research identifies, through a cluster analysis, three segments of tourists based on what the tourist considers sustainability to be (level of knowledge and commitment, as well as its implications for the destination), analyzing for each segment their sociodemographic and socioeconomic variables and their willingness to pay to improve the sustainability of destinations.

The results …

Technological Applications In Small Accommodation Businesses, Codruta Adina Baltescu

ITSA 2022 Gran Canaria - 9th Biennial Conference: Corporate Entrepreneurship and Global Tourism Strategies After Covid 19

The technological evolution in economic activities determines rapid changes and the need for permanent adaptation. In tourism and, especially in the field of hospitality, these transformations have essential influences on the organizational aspects, managerial decisions and, finally, on the companies' competitiveness. The study aims to assess the current state of use of technological applications in the small accommodation businesses, as well as the perceived advantages and barriers in managers’ views. This study presents the results of a qualitative research conducted on a sample of 20 managers of small hospitality businesses in Brasov County, Romania. The findings point out that the …

A Systematic Literature Review On The Responsible Travel Behavior Of Tourists In Destination Tourism, Ailin Fei, Jonathon G. Day Dr.

ITSA 2022 Gran Canaria - 9th Biennial Conference: Corporate Entrepreneurship and Global Tourism Strategies After Covid 19

Responsible travel can be referenced in a variety of ways in academic literature due to similar terms and synonyms. Responsible travel does not have a formal definition although, it is being researched in a wide range of contexts. This study is a systematic literature review on the responsible travel behavior of tourisms in destination tourism. This study aims to identify what literature exists currently that investigates or aims to promote responsible travel behavior of tourists at a destination. This study is also interested in identifying if there is any literature that measures the responsible travel behavior of tourists. This will …

Shark-Diving Tourism In The Macaronesian Archipelagos: Challenges And Opportunities, Pedro Gonzáles Mantilla

ITSA 2022 Gran Canaria - 9th Biennial Conference: Corporate Entrepreneurship and Global Tourism Strategies After Covid 19

The Macaronesian region is typically heavily exploited by fisheries; however, in recent years, marine wildlife tourism has become popular and a shark-diving industry has emerged, potentially presenting an alternative for the sustainable use of sharks. Combining a literature review with interviews with dive operators conducting shark encounters in the Macaronesian archipelagos, we provide an overview of the challenges and conservation potential of shark-diving tourism for these territories. Owing to the regular presence of important shark species for tourism and the growth of the scuba-diving industry, shark-diving has potential to expand over the region. Yet, the overlap between European industrial fishing …

Inaugural Defense And Security Research Symposium Of The Purdue Military Research Institute, Chad Laux, J. Eric Dietz, John Springer, Randy Rapp, Leon Robert

Purdue Military Research Institute: Inaugural Defense & Security Research Symposium “Academia as a Strategic National Asset”

This document is the full conference proceedings from June 26-27, 2023.

Analysis Of Student Motivation In An Introductory Engineering Technology Gateway Course, David Moreno-Rueda, Kevin Michael Simonson, Jeffrey J. Richardson, Eddy Efendy, Rustin Webster, Brittany Newell

School of Engineering Technology Faculty Publications

Student motivation has a large impact on information retention levels and overall student learning. Previous studies have demonstrated the higher a student’s intrinsic motivation, the more successful the student will be in the learning process. At the post-secondary level, student interest is often tied to expected career pathways and outcomes. This work explores student motivation in an engineering technology introductory foundations course. The course is required for all students in the engineering technology department and is recommended for students exploring the engineering technology discipline, creating a unique culture within the classroom. The course includes two lectures, one recitation, a hands-on …

A Novel Method For Alleviating Numerical Stiffness In Li-Ion Thermal Abuse Models, Jason Ostanek, Mohammad Parhizi, Judith Jeevarajan

Purdue University Libraries Open Access Publishing Fund

Numerical modeling of thermal runaway in Lithium-ion batteries has become a critical tool for designing safer battery systems. Significant progress has been made in developing kinetic mechanisms for decomposition reactions and including additional physics such as venting and combustion. However, the governing heat conduction equation and decomposition reaction equations become numerically stiff during thermal runaway, which limits the utility of thermal abuse models to low-dimensional formulations. The present work introduces a new solution strategy, which switches from the full, 3D transient heat conduction formulation to an adiabatic, 0D lumped body formulation only during the stiff portion of the simulation, i.e., …

Call For Papers: A Special Issue Of The Journal Of Pre-College Engineering Education Research On ‘‘Provocations’’, James Holly Jr

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

This special issue on Provocations aims to propel scholarly discourse in pre-college engineering education with thought-provoking papers. Without provocation we risk haphazardly designing research studies, courses, and curricula that can hinder transformation or veneer what is critical. We expect the special issue will foster an epistemological dissonance while insisting the field of pre-college engineering education redefine its purpose, assumptions, and values.

Validation Of A Dem Model For Predicting Grain Damage In An Industrial-Scale Handling System, Zhengpu Chen, Carl Wassgren, Ashutosh Tamrakar, R. P. Kingsly Ambrose

Purdue University Libraries Open Access Publishing Fund

An industrial-scale handling system with a flight conveyor, a screw conveyor, and a rethresher as the core components was designed and built to validate a previously developed discrete-element-method-based (DEM) grain impact damage model. Corn and soybean samples were processed by the system at three impeller speeds and two feed rates, and the amount of damage caused by handling was evaluated. DEM simulations with the impact damage model were performed for the same test conditions. The experimental results showed that grain damage increased with increasing impeller speed and decreasing feed rate, which aligned with the simulation predictions. The damage fraction …

Dog Guardians’ Subjective Well-Being During Times Of Stress And Crisis: A Diary Study Of Affect During Covid-19, Lori S. Hoy, Brigitte Stangl, Nigel Morgan

People and Animals: The International Journal of Research and Practice

The impacts of companion animals on human well-being have been receiving increased media and research attention, especially in relation to the COVID-19 pandemic. Previously, there have been calls for research to consider the major components of subjective well-being separately and for research designs to include assessments over time. In line with this suggestion, the purpose of this study was to gain a more comprehensive understanding of how being a dog guardian can impact affect and contribute to the overall assessment of subjective well-being. This study used a seven-day diary design to capture 31 dog guardians’ day-to- day feelings and thoughts …

Combined Effect Of Albumin Deficiency And Acute Exercise In Reducing Hepatic Lipid Droplet Size In Mice, Yi Zhang, Mirandia Szramowski, Shuhan Sun, Gregory C. Henderson

Purdue University Libraries Open Access Publishing Fund

Hepatic lipid droplets (LDs) are implicated in ectopic lipid accumulation. The core of LDs, triacylglycerol (TAG), is synthesized from the esterification of fatty acids to a glycerol-3-phosphate (G-3-P) backbone. Albumin transports plasma free fatty acids, and previously albumin knockout (Alb−/−) mice were shown to exhibit lower hepatic TAG levels than wildtype (WT). Exercise is a beneficial strategy to alter hepatic metabolism, but its impacts on reducing hepatic lipids are far from satisfactory. The aim of this study was to investigate the combined effect of albumin deficiency and acute exercise on hepatic LDs. Eight-week-old male Alb−/− and WT mice were divided …

The Geography Of Payment Activity On Paypal, Russell Hillberry, Kornel Mahlstein, Simon Schropp

Department of Agricultural Economics Faculty Publications

We use data from PayPal to study the geography of online payment activity. An empirical gravity model finds a distance elasticity of −0.58 for payment value, a result that is 40% lower than typically observed in conventional trade data. The firm-extensive margin is approximately half as sensitive to distance. The link between the scale of merchants' exports and transaction distance is considerably weaker than observed in conventional international trade data. Zipf's Law holds for PayPal merchants in some countries, but fails in smaller PayPal markets. Merchants' account ages only marginally affect the scale and average distance of their export sales.

“I’M Not A Writer!” Graduate Writers’ Self-Assessment Of Writing Ability And Confidence, Vicki R. Kennell

Purdue Writing Lab/Purdue OWL Presentations

This presentation shares survey data on graduate writers' self-assessment of their writing ability and confidence. Typical survey respondents had varied confidence in their writing abilities, were concerned about being respected and understood by scholars in their fields, wrote alone and only when they had to, and were anxious and possibly worried about writing.

Optically Induced Electrothermal Microfluidic Tweezers In Bio-Relevant Media, Kshitiz Gupta, Hye-Ran Moon, Zhengwei Chen, Bumsoo Han, Nicolas G. Green, Steven T. Wereley

Purdue University Libraries Open Access Publishing Fund

Non-contact micro-manipulation tools have enabled invasion-free studies of fragile synthetic particles and biological cells. Rapid electrokinetic patterning (REP) traps target particles/cells, suspended in an electrolyte, on an electrode surface. This entrapment is electrokinetic in nature and thus depends strongly on the suspension medium’s properties. REP has been well characterized for manipulating synthetic particles suspended in low concentration salt solutions (~ 2 mS/m). However, it is not studied as extensively for manipulating biological cells, which introduces an additional level of complexity due to their limited viability in hypotonic media. In this work, we discuss challenges posed by isotonic electrolytes and suggest …

Exploring The Demographics Of Teachers Who Experience Secondary Traumatic Stress, Ofelia Castro Schepers

Purdue University Libraries Open Access Publishing Fund

Background

Over the last decade, the prevalence of childhood and adolescent trauma has continued to gain public notice, forcing educational systems to explore the impact of these traumas on students, teachers, and schools. Some have implemented trauma-informed practices that are purported to be effective for supporting students in classrooms. Researchers have explored the possibility of its adverse effect on teachers as secondary traumatic stress. This study aimed to explore Secondary Traumatic Stress (STS) in classroom teachers in one small urban school district. STS is said to capture how professionals working closely with traumatized populations are impacted by witnessing their clients' …

Why Agriculture Productivity Falls: The Political Economy Of Agrarian Transition In Developing Countries, Rashed Al Mahmud Titumir

Purdue University Press Books

Why Agriculture Productivity Falls: The Political Economy of Agrarian Transition in Developing Countries offers a new explanation for the decline in agricultural productivity in developing countries. Transcending the conventional approaches to understanding productivity using agricultural inputs and factors of production, this work brings in the role of formal and informal institutions that govern transactions, property rights, and accumulation. This more robust methodology leads to a comprehensive, well-balanced lens to perceive agrarian transition in developing countries. It argues that the existing process of accumulation has resulted in nonsustainable agriculture because of market failures—the result of asymmetries of power, diseconomies of scale, …

The Combination Of Cooling Techniques In A Tropical Environment Improves Precision Performance In Young International Fencers, Aurélie Collado, Nicolas Robin, Stéphane Sinnapah, Elisabeth Rosnet, Olivier Hue, Guillaume R. Coudevylle

Journal of Human Performance in Extreme Environments

The performance of intense exercise in a tropical climate is associated with limited exercise capacity due to thermal strain. This limitation is exacerbated in sports requiring full protective equipment. Research evidence suggests disturbances in cognitive function due to thermal discomfort and/or protective equipment (e.g., helmets), and thus sports that require skills in decision-making, fast reaction times, precision, and/or inhibition can be greatly affected. The objective of this study was to investigate the effects of countermeasures on the psychological and physiological responses in young international fencers wearing full protective equipment during an ecological fencing task. Nine young international fencers performed an …

Using An Approach-Avoidance Framework To Understand The Relationship Between Non-Lethal Weapons And Performance, Andrew J. Mojica, Christopher P. Bartak, Joseph N. Mitchell, Alan Ashworth

Journal of Human Performance in Extreme Environments

It is proposed that performance degradation from exposure to non-lethal technology is mediated by impulsive and reflective approachavoidance motivation. An approach-avoidance motivational framework was used to specify a four-stage information processing model that predicts performance degradation. The first stage is Evaluation: it processes physiological, sensory, perceptual, and cognitive information. The second stage is Comparison: it processes the content of the Evaluation into avoidance and approach motivational indices. The third stage is Probability: it processes information from previous stages into a probability of choosing to continue or abandon goal-directed behavior. Finally, the fourth stage is Performance: it processes performance accuracy on …

Transport Of Nitrite From Large Arteries Modulates Regional Blood Flow During Stress And Exercise, Joseph C. Muskat, Charles F. Babbs, Craig J. Goergen, Vitaliy L. Rayz

Weldon School of Biomedical Engineering Faculty Publications

Background: Acute cardiovascular stress increases systemic wall shear stress (WSS)–a frictional force exerted by the flow of blood on vessel walls–which raises plasma nitrite concentration due to enhanced endothelial nitric oxide synthase (eNOS) activity. Upstream eNOS inhibition modulates distal perfusion, and autonomic stress increases both the consumption and vasodilatory effects of endogenous nitrite. Plasma nitrite maintains vascular homeostasis during exercise and disruption of nitrite bioavailability can lead to intermittent claudication. Hypothesis: During acute cardiovascular stress or strenuous exercise, we hypothesize enhanced production of nitric oxide (NO) by vascular endothelial cells raises nitrite concentrations in near-wall layers of flowing blood, resulting …

Probing Stress-Regulated Ordering Of The Plant Cortical Microtubule Array Via A Computational Approach, Jing Li, Daniel B. Szymanski, Taeyoon Kim

Purdue University Libraries Open Access Publishing Fund

Background

Morphological properties of tissues and organs rely on cell growth. The growth of plant cells is determined by properties of a tough outer cell wall that deforms anisotropically in response to high turgor pressure. Cortical microtubules bias the mechanical anisotropy of a cell wall by affecting the trajectories of cellulose synthases in the wall that polymerize cellulose microfibrils. The microtubule cytoskeleton is often oriented in one direction at cellular length-scales to regulate growth direction, but the means by which cellular-scale microtubule patterns emerge has not been well understood. Correlations between the microtubule orientation and tensile forces in the cell …

Double Reservoirs Imaged Below Great Sitkin Volcano, Alaska, Explain The Migration Of Volcanic Seismicity, Xiaotao Yang, Diana C. Roman, Matthew Haney, Cody A. Kupres

Purdue University Libraries Open Access Publishing Fund

Volcanic seismicity provides essential insights into the behavior of an active volcano across multiple time scales. However, to understand how magma moves as the eruption cycle develops, better knowledge of the geometry and physical properties of the magma plumbing system is required. In this study, using full-wave ambient noise tomography, we image the three-dimensional (3-D) crustal shear-wave velocity structure below Great Sitkin Volcano in the central Aleutian Arc. The velocity model reveals two low-velocity anomalies correlating with the migration of volcanic seismicity. With a bulk melt fraction of about 2.5%–9%, these low-velocity anomalies are interpreted as mushy magma reservoirs. We …

Molecular Investigation Confirms Myotis Genus Bats As Common Hosts Of Polychromophilus In Brazil, Bruno Da Silva Mathias, Guilherme Augusto Minozzo, Alexander Welker Biondo, Jaciara De Oliviera Jorge Costa, Herbert Sousa Soares, Arlei Marcili, Lilian De Oliviera Guimaraes, Carolina Clares Dos Anjos, Andrea Pires Dos Santos, Irina Nastassja Riediger, Alan Fecchio, Marina Galvao Bueno, Joao Batista Pinho, Karin Kirchgatter

Purdue University Libraries Open Access Publishing Fund

Plasmodium spp. and some other blood parasites belonging to the order Haemosporida are the focus of many epidemiological studies worldwide. However, haemosporidian parasites from wild animals are largely neglected in scientific research. For example, Polychromophilus parasites, which are exclusive to bats, are described in Europe, Asia, Africa, and Oceania, but little is known about their presence and genetic diversity in the New World. In this study, 224 samples of bats from remaining fragments of the Atlantic Forest and Pantanal biomes, as well as urbanized areas in southern and southeastern Brazil, were analyzed for the presence of haemosporidian parasites by PCR …

The Adoption And Use Of Smart Assistants In Residential Homes: The Matching Hypothesis, Nathanael Johnson, Torsten Reimer

Purdue University Libraries Open Access Publishing Fund

An increasing number of residential homes are equipped with smart assistants such as Cortana, Alexa, and Siri. Adoption rates and the frequency of the usage of smart assistants vary across users and residential homes. Building on the theory of uses and gratifications (UGT) and the unified theory of acceptance and use of technology 2 (UTAUT2), the objective of this paper was to examine whether the intended use of a digital assistant would moderate the effects of performance expectancy and hedonic motivation on its adoption. Two experiments (N = 345 and N = 351) tested the hypothesis that, for utilitarian purposes, …

Holistic Energy Landscape Management In 2d/3d Heterojunction Via Molecular Engineering For Efficient Perovskite Solar Cells, Ke Ma, Jiaonan Sun, Harindi R. Atapattu, Byron W. Larson, Hanjun Yang, Dawei Sun, Ke Chen, Kang Wang, Yoonho Lee, Yuanhao Tang, Anika Bhoopalam, Libai Huang, Kenneth R. Graham, Jianguo Mei, Letian Dou

Purdue University Libraries Open Access Publishing Fund

Constructing two-dimensional (2D) perovskite atop of 3D with energy landscape management is still a challenge in perovskite photovoltaics. Here, we report a strategy through designing a series of π-conjugated organic cations to construct stable 2D perovskites and to realize delicate energy level tunability at 2D/3D heterojunctions. As a result, the hole transfer energy barriers can be reduced both at heterojunctions and within 2D structures, and the preferable work function shift reduces charge accumulation at interface. Leveraging these insights and also benefitted from the superior interface contact between conjugated cations and poly(triarylamine) (PTAA) hole transporting layer, a solar cell with power …

The Future Of Indiana’S Water Resources: A Report From The Indiana Climate Change Impacts Assessment, Keith Cherkauer, Robert Barr, Laura C. Bowling, Kyuhyun Byun, Indrajeet Chaubey, Natalie Chin, Chun-Mei Chiu, Darren Ficklin, Alan Hamlet, Stephen Kines, Charlotte Lee, Ram Neupane, Garett Pignotti, Sanoar Rahman, Sarmistha Singh, Pandara Valappil Femeena, Tanja Williamson, Melissa Widhalm, Jeffrey Dukes

Water Report

This report from the Indiana Climate Change Impacts Assessment (IN CCIA) applies climate change projections for the state to explore how continued changes in Indiana’s climate are going to affect all aspects of water resources, including soil water, evaporation, runoff, snow cover, streamflow, drought, and flooding. As local temperatures continue to rise and rainfall patterns shift, managing the multiple water needs of communities, natural systems, recreation, industry, and agriculture will become increasingly difficult. Ensuring that enough water is available in the right places and at the right times will require awareness of Indiana’s changing water resources and planning at regional …

Library Publishing Directory 2023, Library Publishing Coalition

Library Publishing Directory

No abstract provided.

Factors Influencing Student Outcomes In K-12 Integrated Stem Education: A Systematic Review, Kadir Kozan, Secil Caskurlu, Siddika Selcen Guzey

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

Earlier integrated science, technology, engineering, and mathematics (STEM) education research has shown effects on students’ attitudes toward STEM careers, actual and perceived learning, and interest in pursuing a STEM career in their future endeavors. The current systematic review purported to review the recent K-12 integrated STEM education research to determine (a) the factors that influence student outcomes and (b) the general characteristics of reviewed studies. Overall, the results (a) showed that most studies focused on integrating at least three subject areas; (b) highlighted four main factors (i.e., instructional, teacher-related, student-related, and extracurricular factors) that jointly influence student outcomes; and (c) …

Interpretable Machine Learning Models For Hospital Readmission Prediction: A Two-Step Extracted Regression Tree Approach, Xiaoquan Gao, Sabriya Alam, Pengyi Shi, Franklin Dexter, Nan Kong

Purdue University Libraries Open Access Publishing Fund

Background

Advanced machine learning models have received wide attention in assisting medical decision making due to the greater accuracy they can achieve. However, their limited interpretability imposes barriers for practitioners to adopt them. Recent advancements in interpretable machine learning tools allow us to look inside the black box of advanced prediction methods to extract interpretable models while maintaining similar prediction accuracy, but few studies have investigated the specific hospital readmission prediction problem with this spirit.

Methods

Our goal is to develop a machine-learning (ML) algorithm that can predict 30- and 90- day hospital readmissions as accurately as black box algorithms …

Behavioral Assays Reveal Mechanisms Of Supercolony Formation In Odorous House Ants, Grzegorz Buczkowski, Sihui Wang, Bruce A. Craig

Purdue University Libraries Open Access Publishing Fund

The formation of expansive multi-nest and multi-queen supercolonies is perhaps the most important factor responsible for the ecological success of invasive ants. The odorous house ant, Tapinoma sessile, is a widespread ant native to North America. T. sessile is a challenging urban pest, but also serves as an interesting system to study ant social organization and invasion biology. This is due to its remarkable dichotomy in colony social and spatial structure between natural and urban environments. Natural colonies typically consist of a small number of workers, inhabit a single nest, and are monogyne whereas urban colonies show extreme polygyny …

A Primer On Working With Longitudinal Student Unit Records, Russell Long, Richard A. Layton, Marisa K. Orr, Susan M. Lord, Matthew Ohland

School of Engineering Education Faculty Publications

Longitudinal, student-level data are a rich resource for characterizing how students navigate the terrain of higher education. Learning to work effectively with such data, however, can be a challenge. In this paper, we share some of our experiences over years of conducting research with the Multiple Institution Database for Investigating Engineering Longitudinal Development (MIDFIELD). MIDFIELD contains individual student-level records for all undergraduate students at 19 US institutions with over 1.7 million unique students. This paper focuses on our lessons learned about processing longitudinal data to prepare it for analysis. We describe and define the steps that we take to process …