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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 …

“Why Should The Fish Feel Safe? I Don’T Feel Safe!”: An Audit Of Pet Ownership Within An Nhs Service For Adults With Severe Mental Illness, With Lessons For Service Improvement, Abigail Alfrey, Steve Church, Niki Christodoulou, Emma Harding

People and Animals: The International Journal of Research and Practice

Background—Several studies have identified that pets can promote mental health, wellness, and recovery. However, little is known about the impact of pet ownership upon those with a severe mental illness (SMI), or whether mental health services are offering sufficient support that is specific to the needs of pet-owning service users. Aims—To identify the proportion of pet owners among an urban, U.K.-based community psychosis service; and to elicit service users’ views on pet ownership, to better understand and support this population’s particular needs. Method—The proportion of pet owners among this sample (n = 212) was compared with U.K. population data …

Assessing Unstabilized Approaches: A Phenomenology Study Of The Risk Perceptions And Decision-Making Thought Process Of Collegiate Aviation Pilots, Shlok Misra, Jorge L.D Albelo, Victor Fraticelli Rivera

Journal of Aviation Technology and Engineering

The Federal Aviation Administration emphasized the need to focus on and develop human factors training as early as 1993 in official Human Factors Policy Order 9550.8. The purpose of this study was to conduct a detailed qualitative phenomenological analysis of the risk perceptions and decision-making model of collegiate aviation pilots for unstabilized approaches. The study focused on understanding how collegiate aviation pilots perceive unstable approaches, the risk associated with unstable approaches, and the factors that trigger pilots to execute a go-around. The International Air Transportation Association warns that continuing an unstabilized approach can lead to runway excursions, hard landings causing …

Eye-Gaze-Controlled Hmds And Mfd For Military Aircraft, Lrd Murthy, Abhishek Mukhopadhyay, Somnath Arjun, Varshith Yelleti, Peter Thomas, Dilli Babu Mohan, Pradipta Biswas

Journal of Aviation Technology and Engineering

Eye-gaze-controlled interfaces allow the direct manipulation of a graphical user interface by looking at it. This technology has great potential in military aviation, in particular, operating different displays in situations where pilots’ hands are occupied with flying the aircraft. This paper reports studies on analyzing the accuracy of eye-gaze-controlled interfaces inside aircraft undertaking representative flying missions. We report that using eye-gaze-controlled interfaces, pilots can undertake representative pointing and selection tasks at less than two seconds on average in a transport aircraft. Further, we analyzed the accuracy of eye-gaze-tracking glasses under various G load factors and analyzed the failure modes. We …

Factors Associated With The Hpv Vaccination Among Korean Americans And Koreans: A Systematic Review, Soojung Jo, Soo-Yeon Han, Connor A. Walters

School of Nursing Faculty Publications

Koreans and Korean Americans (KAs) have limited HPV knowledge and awareness. KAs share a culture with Koreans, and this culture has affected their behavior around HPV. This systematic review aimed to synthesize the factors associated with HPV vaccination among Koreans and KAs. The literature search was done with four databases. The vaccination rate, awareness and knowledge of HPV, and factors associated with vaccination intention were identified. Eighteen articles were selected. Koreans and KAs had low levels of HPV knowledge and awareness. Perceived benefits and seriousness were associated with vaccination intention. Cervical cancer history, beliefs that their daughters need a pap …

Beyond Transactional Narratives Of Agency: Peer Consultants’ Antiracist Professionalization, Amy T. Cicchino, Katharine H. Brown, Christopher Basgier, Megan Haskins

The Writing Center Journal

Social justice movements, especially Black Lives Matter, inspired many writing center administrators to reflect on their commitments to antiracism and engage with antiracist professional development with their staff. However, there is continued need to study the impact antiracist professional development has on writing center consultants’ ability to practice antiracism in sessions. This article presents a predominantly white institution (PWI) writing center’s attempt to do this work, with a particular emphasis on how antiracist professional development complicates portrayals of consultant agency within the writing center. The study analyzes qualitative data collected from consultants’ reflective writing, survey, and interview responses. Results illustrate …

Integration Of Lane-Specific Traffic Data Generated From Real-Time Cctv Videos Into Indot's Traffic Management System, Stanley Chien, Lauren Christopher, Yaobin Chen, Mei Qiu, Wei Lin

JTRP Technical Reports

The Indiana Department of Transportation (INDOT) uses about 600 digital cameras along populated Indiana highways in order to monitor highway traffic conditions. The videos from these cameras are currently observed by human operators looking for traffic conditions and incidents. However, it is time-consuming for the operators to scan through all video data from all the cameras in real-time. The main objective of this research was to develop an automatic and real-time system and implement the system at INDOT to monitor traffic conditions and detect incidents automatically. The Transportation and Autonomous Systems Institute (TASI) of the Purdue School of Engineering and …

Demonstration Project For Asphalt Performance Engineered Mixture Design Testing, Reyhaneh Rahbar-Rastegar, Gerald Huber, Miguel A. Montoya, Christopher Campbell, John E. Haddock

JTRP Technical Reports

The asphalt industry is moving towards performance-based methods for asphalt mixture design. The Federal Highway Administration (FHWA) is supportive of state departments of transportations (DOT) adopting index and predictive performance tests, especially those making use of the Asphalt Mixture Performance Tester (AMPT). The FHWA is therefore encouraging state DOTs to gain experience with the requirements of the procedures and analysis tools for Balanced Mixture Design (BMD). The main objective of this study is to evaluate fatigue cracking on three INDOT mainline pavement projects that have asphalt mixtures designed by the Superpave 5 mixture design, and to better understand the fundamental …

Long-Term Project And Network-Level Ndt Implementation Plan For Indiana, Yunhui Jia, Christopher S. Williams, Prince Baah, Mark D. Bowman

JTRP Technical Reports

Bridge deck condition assessments in Indiana are primarily reliant on visual inspection. The condition of bridge decks, however, is highly dependent on deterioration under the surface, which includes the corrosion of steel reinforcement and concrete delamination. The implementation of reliable nondestructive testing (NDT) methods can provide information about such internal deterioration, but considering the multiple NDT methods currently available, guidance is needed to find the best approach for assessing bridge decks in the state’s bridge inventory. A research program was conducted to examine various NDT methods with the objective of recommending an effective NDT strategy for network-level and project-level bridge …

Pile Stability Analysis In Soft Or Loose Soils: Guidance On Foundation Design Assumptions With Respect To Loose Or Soft Soil Effects On Pile Lateral Capacity And Stability, Yao Wang, Jeehee Lim, Rodrigo Salgado, Monica Prezzi, Jeremy Hunter

JTRP Technical Reports

The design of laterally loaded piles is often done in practice using the p-y method with API p-y curves representing the behavior of soil at discretized points along the pile length. To account for pile-soil-pile interaction in pile groups, AASHTO (2020) proposes the use of p-multipliers to modify the p-y curves. In this research, we explored, in depth, the design of lateral loaded piles and pile groups using both the Finite Element (FE) method and the p-y method to determine under what conditions pile stability problems were likely to occur. The analyses considered a wide …

Integration Of Probe Data Tools Into Tmc Operations, Jijo K. Mathew, Howell Li, Jairaj Desai, Rahul Suryakant Sakhare, Enrique Saldivar-Carranza, Margaret Hunter, Benjamin Scholer, Darcy M. Bullock

JTRP Technical Reports

With the advent of probe data, there is a need to virtualize many of the Traffic Management Center (TMC) tools used for analyzing work zones, severe crashes, winter operations, moving maintenance operations, and providing dashboards characterizing overall system mobility. Traditional tools have evolved over the past several years and it is important to develop training materials and make them more accessible to a broad range of Indiana Department of Transportation (INDOT) users and other stakeholder. Over the past several years, agencies have used probe data, mainly 1-minute aggregated segment-based probe data to assess and manage roadways. This study extended traditional …

Road Condition Detection And Classification From Existing Cctv Feed, Stanley Chien, Yaobin Chen, Lauren Christopher, Mei Qiu, Zhengming Ding

JTRP Technical Reports

The Indiana Department of Transportation (INDOT) has approximately 500 digital cameras along highways in populated areas of Indiana. These cameras are used to monitor traffic conditions around the clock, all year round. Currently, the videos from these cameras are observed one-by-one by human operators looking for traffic conditions and incidents. The main objective of this research was to develop an automatic, real-time system to monitor traffic conditions and detect incidents automatically.

The Transportation and Autonomous Systems Institute (TASI) of the Purdue School of Engineering and Technology at Indiana University-Purdue University Indianapolis (IUPUI) and the Traffic Management Center of INDOT developed …

Implementation Study: Continuous, Wireless Data Collection And Monitoring Of The Sagamore Parkway Bridge, Rameez Ali Raja, Mustafa Kilic, Monica Prezzi, Rodrigo Salgado, Fei Han

JTRP Technical Reports

This report presents, in detail, the development and implementation of a wireless solar powered DAQ system for continuous real-time monitoring of the Sagamore Parkway Bridge using the data collected from strain gauges installed in the bridge pier and its foundation piles. The data analysis showed that there is no significant change in the load-settlement response of the bridge pier 3 years after its construction. The pile cap contribution in carrying the total load carried by the bridge pier is significant (about 20%). The hourly ambient temperature trends match with the incremental bending moments measured on the bridge pier and the …

Synthesis Study: Repair And Durability Of Fire-Damaged Prestressed Concrete Bridge Girders, Tzu-Chun Tseng, Amit H. Varma

JTRP Technical Reports

Recent research results from INDOT research project SPR-4221 indicate that the damage to prestressed concrete bridge girders from an intense hydrocarbon fire is limited to concrete material degradation up to a depth of 1 inch from the surface. Additionally, concrete cracking and spalling occur in the fire-damaged region, but the structural strength (flexure and shear) of fire-exposed prestressed concrete bridge girders is not compromised. The findings open the possibility for repairing damaged bridge girders and answers questions regarding the durability of damaged-unrepaired and damaged-repaired girders.

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, …

Real Life Experience With Major Pavement Types, Ayesha Shah, Jan Olek, Rebecca S. Mcdaniel

JTRP Technical Reports

Pavement performance is a complex issue which depends on many contributing factors. Examining the performance of real-life pavements across the state determines what the actual service lives are for the pavements. For the purposes of this study, only selected LTPP projects were examined, along with a database containing all the historic repair projects completed in Indiana. Pertinent information present in the Indiana Historic Contracts Database was extracted concerning the types of pavement repair and treatments options commonly employed within the state, the time between repairs, etc. These data were used to determine descriptive statistical parameters and was summarized in graph …

Synthesis Study Of Best Practices For Cleaning Tools And Paving Equipment: Asphalt Release Agents (Aras) And Asphalt Cleaners (Acs), Sogand Hasanzadeh, Mirian Velay-Lizancos, Woei-Chyi Chang, Marina Lopez-Arias, Vito Francioso

JTRP Technical Reports

Diesel has been used widely as an asphalt cleaning agent due to its effectiveness for many years. However, its negative impact on health and the environment calls for more sustainable and safe alternatives. Asphalt Release Agents (ARAs) are products for preventing or mitigating undesirable adhesion of HMA to the asphalt equipment, and Asphalt Cleaners (ACs) are products for remediation when the adhesion has already happened. In this study, commercially ARAs and ACs reported by NTPEP and U.S. DOTs are quantitatively and qualitatively examined based on the following criteria: (1) cost-effectiveness, (2) functionality, (3) environmental, and (4) safety considerations. The results …

Assessing The Travel Demand And Mobility Impacts Of Transformative Transportation Technologies In Indiana, Hao Luo, Ricardo Chahine, Arianna Rambaram, Elizabeth Theresa Rosenzweig, Konstantina Gkritza, Hua Cai

JTRP Technical Reports

The rapid development of transformative transportation technologies, such as bike-sharing, shared e-scooters, and ride-hailing systems, is reshaping the transportation landscape. These transformative transportation technologies have the potential to significantly change travel behavior and travel demand and affect transportation agencies’ planning, operations, and decision-making. The objective of this project is to develop a framework and models to quantify the potential travel demand and mobility impacts of transformative transportation technologies in Indiana cities. This project analyzed historical system usage data and conducted survey studies to evaluate the availability and use of transformative transportation technologies in select Indiana cities. The project also proposed …

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 …

The Contributions Of Immediate Retrieval And Spaced Retrieval To Word Learning In Preschoolers With Developmental Language Disorder, Laurence B. Leonard, Patricia Deevy, Eilseen Haebig, Jeffrey D. Karpicke, Christine Weber

Purdue Center for Early Learning Faculty and Staff Publications

Background and Aims Children with developmental language disorder (DLD) benefit from word learning procedures that include a mix of immediate retrieval and spaced retrieval trials. In this study, we examine the relative contribution of these two types of retrieval. Methods We examine data from Haebig et al. (2019) in their study that compared an immediate retrieval condition and a condition of spaced retrieval that also included immediate retrieval trials. Participants were 4- and 5-year old children with DLD and same-age peers with typical language development. Each child learned novel (made-up) words referring to unusual plants and animals in both conditions. …

Calculation Of Internal Flow In A Compressor With Valve Motion, Shinichi Kawabata, Ryohei Deguchi, Hideki Matsuura

International Compressor Engineering Conference

No abstract provided.

Thermo-Economic Design And Optimization Of Cooling Systems Employed In Cruise Ship, Alfonso William Mauro, Giovanni Napoli, Francesco Pelella, Luca Viscito

International Refrigeration and Air Conditioning Conference

No abstract provided.

Outdoor Comfort In Public Spaces, A Critical Review, Mingliang Li, Hongxi Yin, Ming Qu, Ian Trivers

International High Performance Buildings Conference

No abstract provided.

Impact Of Lubricant In The Evaporator As A Function Of Oil Circulation Rate In Variable Speed Heat Pumps Working With R290, Ruben Ossorio, Emilio Navarro Peris, Riley Barta, Alejandro Lopez

International Refrigeration and Air Conditioning Conference

No abstract provided.

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

International Refrigeration and Air Conditioning Conference

No abstract provided.

Field Measurement-Based Validation Of Fault Diagnostics For Commercial Building Hvac Systems, Amir Ebrahimifakhar, Yuxuan Chen, David P. Yuill, Eliot Crowe

International Refrigeration and Air Conditioning Conference

No abstract provided.

Performance Analysis Of An R410a Air-To-Water Heat Pump For Different Fan And Compressor Speed Combinations, Ignacio Ortega, Jaime Sieres, Fernando Cerdeira, José M. Santos, Estrella Álvarez

International Refrigeration and Air Conditioning Conference

No abstract provided.

Model-Based Co-Simulation Of Heat Pump Water Heater With Embedded Phase Change Materials Thermal Energy Storage, Jian Sun, Kashif Nawaz, Joe Rendall, Ahmed Elatar, Jamieson Brechtl

International Refrigeration and Air Conditioning Conference

No abstract provided.