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Articles 188281 - 188310 of 196008
Full-Text Articles in Entire DC Network
文理人 (Wenliren: Humanities, Science, Human), Lui Lam
文理人 (Wenliren: Humanities, Science, Human), Lui Lam
Faculty Publications
No abstract provided.
Opportunities For Public Comments On Pending Trap/Pot Fishery Regulations To Protect The North Atlantic Right Whale, Catherine Schluter
Opportunities For Public Comments On Pending Trap/Pot Fishery Regulations To Protect The North Atlantic Right Whale, Catherine Schluter
Marine Affairs Institute Staff Publications
No abstract provided.
Focus On The Future: An Interview With Justin S. Smith, Esq., Nicole P. Dyszlewski, Meghan L. Hopkins
Focus On The Future: An Interview With Justin S. Smith, Esq., Nicole P. Dyszlewski, Meghan L. Hopkins
Law Faculty Scholarship
No abstract provided.
Rfid Adaption In Healthcare Organizations: An Integrative Framework, Ahed Abugabah, Louis Sanzogni, Luke Houghton, Ahmad Ali Alzubi, Alaa Abuqabbeh
Rfid Adaption In Healthcare Organizations: An Integrative Framework, Ahed Abugabah, Louis Sanzogni, Luke Houghton, Ahmad Ali Alzubi, Alaa Abuqabbeh
All Works
Radio frequency identification (RFID), also known as electronic label technology, is a non-contact automated identification technology that recognizes the target object and extracts relevant data and critical characteristics using radio frequency signals. Medical equipment information management is an important part of the construction of a modern hospital, as it is linked to the degree of diagnosis and care, as well as the hospital's benefits and growth. The aim of this study is to create an integrated view of a theoretical framework to identify factors that influence RFID adoption in healthcare, as well as to conduct an empirical review of the …
Folding Methodology For Flexible Aircraft Interiors, Aditya Venkatesh, Fengfeng (Jeff) Xi, Joon Chung
Folding Methodology For Flexible Aircraft Interiors, Aditya Venkatesh, Fengfeng (Jeff) Xi, Joon Chung
International Journal of Aviation, Aeronautics, and Aerospace
This paper establishes a general furniture folding methodology that is aimed at flexible aircraft cabin interiors. This methodology will allow users to modify existing furniture pieces to their liking and thereby customizing their overall travel experience. The folding methodology also includes a process to quantify the transformation of the furniture pieces. This paper also introduces two design concepts called Open-on-Demand and Reconfiguration to allow passengers to modify an otherwise rigid cabin. The advantages of the multi-functional space saving furniture pieces are also illustrated in this paper. While the general folding methodology was developed for aircraft interiors, it can be adapted …
A Model For Inhalation Of Infectious Aerosol Contaminants In An Aircraft Passenger Cabin, Bert A. Silich
A Model For Inhalation Of Infectious Aerosol Contaminants In An Aircraft Passenger Cabin, Bert A. Silich
International Journal of Aviation, Aeronautics, and Aerospace
Aerosol contamination of an aircraft cabin by infectious passengers is a concern of passengers, aircrew and the aviation industry. This may be especially important during a pandemic, such as COVID-19, where the full extent of aerosol transmission is not well understood. A statistical method to determine the number of infectious passengers on board along with a mathematical model estimating the contaminant concentration of aerosols in the cabin and the number of inhaled infectious particles by passengers is presented. An example is used to demonstrated how the results can be estimated during normal operations and emergency conditions with malfunctions of the …
Small Unmanned Aircraft Systems Acoustic Analysis For Noninvasive Marine Mammal Response: An Exploratory Field Study, David Thirtyacre, Gennifer Brookshire, Sarah Callan, Brittany Arvizu, Patrick Sherman
Small Unmanned Aircraft Systems Acoustic Analysis For Noninvasive Marine Mammal Response: An Exploratory Field Study, David Thirtyacre, Gennifer Brookshire, Sarah Callan, Brittany Arvizu, Patrick Sherman
International Journal of Aviation, Aeronautics, and Aerospace
As in countless other fields of human endeavor, small unmanned aircraft systems (sUAS) have the potential to benefit pinniped (Pinnipedia; e.g., Phocidae [seals], Otariidae [sea lions], and Odobenidae [walruses]) response efforts. The employment of sUAS could give responders a close-up look at animals in distress in order to determine their condition as well as develop a response strategy. However, unlike other subjects that are regularly inspected by sUAS (e.g., croplands and civil infrastructure) pinnipeds may respond to the distinctive sound generated by small, multirotor sUAS. This reaction may include retreating into the water en masse, which could put …
How Duty Rosters And Stress Relate To Sleep Problems And Fatigue Of International Pilots, Marion Venus, Martin Grosse Holtforth
How Duty Rosters And Stress Relate To Sleep Problems And Fatigue Of International Pilots, Marion Venus, Martin Grosse Holtforth
International Journal of Aviation, Aeronautics, and Aerospace
While previous research focused on pilots’ fatigue, rosters, potential performance-impairment and aviation-safety, this research investigates, how pilots’ work-related and psychosocial stress and rosters can affect their sleep and fatigue. A cross-sectional online survey was completed by 192 pilots flying for European operators, 180 Australian pilots and 34 pilots from UAE, Turkey and Asia Pacific. Pilots reported their actual duty- and flight-hours, flown sectors, standby, rest, vacation days, number of early starts, night-flights and sports-hours for the last two months. Schedule-related data, way to work, age, flight-hours on the present type of aircraft, subjective job-security and psychosocial stress were used as …
Numerical Analysis Of Aerospike Engine Nozzle Performance At Various Truncation Lengths, Sam Dakka Dr, Oliver Dennison
Numerical Analysis Of Aerospike Engine Nozzle Performance At Various Truncation Lengths, Sam Dakka Dr, Oliver Dennison
International Journal of Aviation, Aeronautics, and Aerospace
The aerospike engine was first devised in the early 1960s where it provided new means of reaching orbit in a single stage. The paper aimes to demonstrate the viability of the technology by showcasing the increased nozzle thrust efficiency over the conventional bell nozzle. Various truncations were applied to the nozzle and each was subjected to two conditions, an over-expansion and near optimum condition. The nozzle contour was developed using the simple approximation method and was chosen to replicate that of the XRS-2200. This anchored the data, thereby validating the computational fluid dynamics (CFD) simulation. Simulations were completed for at …
Predictability Improvement Of Scheduled Flights Departure Time Variation Using Supervised Machine Learning, Deepudev Sahadevan, Palanisamy Ponnusamy Dr, Manjunath K. Nelli Mr, Varun P. Gopi Dr
Predictability Improvement Of Scheduled Flights Departure Time Variation Using Supervised Machine Learning, Deepudev Sahadevan, Palanisamy Ponnusamy Dr, Manjunath K. Nelli Mr, Varun P. Gopi Dr
International Journal of Aviation, Aeronautics, and Aerospace
The departure time uncertainty exacerbates the inaccuracy of arrival time estimation and demand for arrival slots, particularly for movements to capacity constrained airports. The Estimated Take-Off Time (ETOT) or Estimated Departure Time(ETD) for each individual flight is currently derived from Air Traffic Flow Management System (ATFMS), which are solely determined based on individual flight plan Estimated Off Block Time(EOBT) or subsequent delays updated by Airline. Even if normal weather conditions prevail, aircraft departure times will differ from ETOTs determined by the ATFMS due to a number of factors such as congestion, early/delayed inbound flight (linked flights), reactionary delays and air …
Aerodynamic Performance Analysis Of Co-Flow Jet Airfoil, C M Vigneswaran, Vishnu Kumar G C
Aerodynamic Performance Analysis Of Co-Flow Jet Airfoil, C M Vigneswaran, Vishnu Kumar G C
International Journal of Aviation, Aeronautics, and Aerospace
The work in this paper aims to increase the maximum lift coefficient of the airfoil by implementing the co-flow jet concept on NACA 0018 airfoil and also to investigate the performance of co-flow jet (CFJ) airfoil. To conduct numerical solution, RANS equations have been solved for 2D incompressible and unsteady flow using the Spalart-Allmaras turbulence model. The suction surface of the airfoil is modified by placing the injection slot near the leading edge and the suction slot near the trailing edge. A small mass of air is withdrawn into the airfoil suction slot, pressurized by a pumping system located inside …
Notes On Rules Of Thumb For Pilots, Yuzo Inokuchi
Notes On Rules Of Thumb For Pilots, Yuzo Inokuchi
International Journal of Aviation, Aeronautics, and Aerospace
The rules of thumb can be found in several flight instructions or pilot's handbooks. Thus far, available rules have been presented without proof or a valid range, such as altitude or velocity ranges wherein these rules can be applied. This paper presents the background theory for a few selected rules; then, the rule is compared with a first-order approximation of the background theory. A valid range is presented by analyzing the prediction accuracy of the rule, which is defined as the relative error of the rule to the background theory. These rules of thumb provide a good approximation of the …
Identification Of Wind-Induced Hazard Zones Impacting Uas Bridge Inspection, Jack J. Green, John Mott
Identification Of Wind-Induced Hazard Zones Impacting Uas Bridge Inspection, Jack J. Green, John Mott
International Journal of Aviation, Aeronautics, and Aerospace
Unmanned Aerial Systems (UAS) continue to grow in both popularity and utility within the national airspace system. The use of commercial UAS for civil inspection, specifically that of bridge structures, is becoming commonplace among practitioners and academics alike. The development of an integrated bridge-inspection hazard model provides a way for UAS operators to prepare for and respond to changing environmental conditions that could otherwise prevent a successful UAS flight. The interaction of wind-induced airflow with bridge surfaces creates an aerodynamic wake that can result in hazardous conditions for a UAS platform operating in close proximity. An analysis of this airflow …
Aviation Culture: A ‘Glass Sky’ For Women Pilots - Literature Review, Ivana Gorlin, Donna Bridges
Aviation Culture: A ‘Glass Sky’ For Women Pilots - Literature Review, Ivana Gorlin, Donna Bridges
International Journal of Aviation, Aeronautics, and Aerospace
This paper reports on a review of literature covering gender issues in aviation. It considers the impacts of aviation culture on women pilots. The focus of the review was on empirical studies over a 25-year period (1996-2020). Two research questions underpin the review; firstly, we investigated how aviation culture impacts women pilots’ experiences, secondly, we considered its effect on women as pilots. Using a hermeneutic methodological framework, we found that cultural attitudes towards women pilots in the aviation industry are biased and discriminatory. The studies in the review overwhelming concur that the hegemonic masculine culture that dominates aviation significantly diminishes …
Albatross And Falcon Inspired Bionic Uav: An Aerodynamic Analysis, Bilji C. Mathew, Sagar K. Sahu, Prantik Dutta, Rushi Savale, Muruga Lal Jeyan Jv Dr.
Albatross And Falcon Inspired Bionic Uav: An Aerodynamic Analysis, Bilji C. Mathew, Sagar K. Sahu, Prantik Dutta, Rushi Savale, Muruga Lal Jeyan Jv Dr.
International Journal of Aviation, Aeronautics, and Aerospace
The drone industry yearns for enhanced aerodynamic performance. In order to achieve this feat, researchers and engineers are trying to mimic the natural flyers due to their aerodynamic optimality. One such flyer, the Albatross is an inspiration for many marine drones due to its planform and aerodynamic efficiency. The wing of the plan form is designed and simulated to study its properties. The Bell-Shaped Lift Distribution is incorporated for higher efficiency and elimination of the total downwash produced in case of an Elliptical Lift Distribution. A blended wing body inspired by the Falcon is used for smoother airflow interactions. Furthermore, …
Digitalization Of Educational And Methodological Support For The Training Of Aviation Dispatchers, Zair Ziyaevich Shamsiev
Digitalization Of Educational And Methodological Support For The Training Of Aviation Dispatchers, Zair Ziyaevich Shamsiev
International Journal of Aviation, Aeronautics, and Aerospace
The tasks of improving the educational process of training civil aviation dispatchers on the basis of the development and implementation of digital teaching aids are considered. Legislative and regulatory documents are accepted as an object of digitalization. The end result of the research is expressed in the provision of the educational process with a special electronic educational complex, which has the functions of providing the necessary information and conducting practical exercises to deepen, consolidate and control knowledge in the field of aviation documents.
Comparative Study On Performance Accuracy Of Three Probe And Five Probe Flow Analysers For Wind Tunnel Testing, Akhila Rupesh Ms, J V Muruga Lal Jeyan Dr
Comparative Study On Performance Accuracy Of Three Probe And Five Probe Flow Analysers For Wind Tunnel Testing, Akhila Rupesh Ms, J V Muruga Lal Jeyan Dr
International Journal of Aviation, Aeronautics, and Aerospace
In the field of inviscid fluid flow studies, the theoretical concept has to be developed even more. In order to make it possible, it is very important to supplement the concepts with strong experimental results. While performing experimentation, various accepts of design can be determined with factors influencing the and also required modification can be recommended in a more systematic and economic manner. Also, the aim objective of the experiment is to extend the underlying theory and to produce new designs with improvements that can be great support to the advancement in technology. In experimental analysis, wind tunnels are used …
An Integrated Method For Airline Company Supplier Selection Based On The Entropy And Vikor Methods: A Real Case Study, Naimeh Borjalilu, Zeinab Sazvar, Sina Nayeri
An Integrated Method For Airline Company Supplier Selection Based On The Entropy And Vikor Methods: A Real Case Study, Naimeh Borjalilu, Zeinab Sazvar, Sina Nayeri
International Journal of Aviation, Aeronautics, and Aerospace
All certified airlines require to implement a safety and quality management system. Therefore, the quality of all services and products with critical operational domains have been challenging issues in the aviation industry. In this regard, supplier selection plays an important role to acquire competitive benefits. Flight operations is critical scope in an airline and their outputs have a direct impact on flight safety consequences. Therefore, the quality of supplier’s product and services play the main role in their flight operations process. In this research, a new decision-making framework is developed to evaluate the performance of the suppliers based on the …
Pilot Visual Detection Of Small Unmanned Aircraft On Final Approach During Nighttime Conditions, Jon M. Loffi, Ryan J. Wallace, Samuel M. Vance, Jamey Jacob, Jared C. Dunlap, Taylor A. Mitchell, Dane C. Johnson
Pilot Visual Detection Of Small Unmanned Aircraft On Final Approach During Nighttime Conditions, Jon M. Loffi, Ryan J. Wallace, Samuel M. Vance, Jamey Jacob, Jared C. Dunlap, Taylor A. Mitchell, Dane C. Johnson
International Journal of Aviation, Aeronautics, and Aerospace
In December 2020, the Federal Aviation Administration (FAA) announced the release of a new final rule, permitting operators of small unmanned aircraft systems (sUAS) to perform routine night operations. Public comments to the Notice of Proposed Rulemaking indicated potential safety concerns regarding a pilot’s ability to spot a low-altitude sUAS during nighttime conditions. Leveraging data from the FAA’s UAS Sighting Report Database, the research team evaluated the significance of aircraft encounters with UAS at night. Researchers conducted an inflight experiment in which 10 pilots performed an instrument approach to airport during nighttime conditions in which a multi-rotor sUAS presented a …
Aircraft Exhaust Gas Temperature Value Mining With Rough Set Method, Mustagime Tülin Yıldırım Asst. Prof., Mehtap Taşcı
Aircraft Exhaust Gas Temperature Value Mining With Rough Set Method, Mustagime Tülin Yıldırım Asst. Prof., Mehtap Taşcı
International Journal of Aviation, Aeronautics, and Aerospace
Aircrafts are one of the most important means of transportation today. For aircrafts to be able to serve safely, their maintenance must be done in a timely and complete manner. In addition to regular maintenance, it may appear suddenly; there is also irregular maintenance performed in cases such as lightning strikes, bird strikes, and hard landings. Engine failures and maintenance has great importance in aircraft maintenance. Using the data recorded during the flight by flight data recorder, the engine health condition is monitored and the necessary maintenance procedures are carried out. In this study, the exhaust gas temperature was estimated …
The Constructivist Approach Towards Identifying The Challenges Of Esp Teachers: The Case Of Aviation English, Gökhan Demirdöken Mr.
The Constructivist Approach Towards Identifying The Challenges Of Esp Teachers: The Case Of Aviation English, Gökhan Demirdöken Mr.
International Journal of Aviation, Aeronautics, and Aerospace
Continuous growth of aviation industry necessitates developing a better understanding of English for Specific Purposes teaching settings to improve the quality teaching and in turn, to serve best for the needs of ESP students. Therefore, role of ESP teachers and their experiences in these teaching settings need to be closely monitored for improved professional development opportunities. Taking this into account the present study focused on ESP teachers working and giving Aviation English courses in a tertiary level institution in Turkey. The constructivist approach was adopted to uncover the challenges encountered by ESP teachers in the target setting. Five ESP teachers …
Aerodynamic Characterization Of Bio-Mimicked Pleated Dragonfly Aerofoil, Md Akhtar Khan, Chinmaya Padhy
Aerodynamic Characterization Of Bio-Mimicked Pleated Dragonfly Aerofoil, Md Akhtar Khan, Chinmaya Padhy
International Journal of Aviation, Aeronautics, and Aerospace
The work inspired by the dragonfly wing corrugation positioned at the front wing's radius section lying at 40% of the total wingspan of forewing from the root section. During gliding flight, dragonfly wings presumed to be an ultra-light aerofoil due to its well-defined cross-sectional corrugation. The aerodynamic simulation carried out to understand the aerodynamic performance of a bio-mimetic dragonfly corrugated airfoil at low Reynolds number range of 75000-150000 to explore the potential advantages of pleated airfoils at a varying angle of attack from 0° to 12°. CFD analysis accomplished by using ANSYS Fluent to understand the aerodynamic performance of the …
Potential Applications Of Electrodynamic Tethers, Sai Charan Petchetti
Potential Applications Of Electrodynamic Tethers, Sai Charan Petchetti
International Journal of Aviation, Aeronautics, and Aerospace
In recent decades, alternative propulsion systems have been investigated and have attracted great interest in the space community. Most of these alternative propulsion systems need propellants. One alternative propulsion system that does not require propellants and is not often discussed is electrodynamic tethers (EDTs). This paper speculates the potential applications of EDTs ranging from radiation belt remediation to momentum exchange tether re-boosting.
Customer Service 2.0: The Effect Of Ryanair's Policy Change, John C. Griffith Ph.D., Donna L. Roberts Ph.D.
Customer Service 2.0: The Effect Of Ryanair's Policy Change, John C. Griffith Ph.D., Donna L. Roberts Ph.D.
International Journal of Aviation, Aeronautics, and Aerospace
Customer perceptions of Ryanair and Southwest were evaluated to compare two data periods; 2012-13 and 2016-17 to determine differences in passenger perceptions between and within airlines. Quantitative data and open area comments were analyzed. A replication of a previous study for 2016-17 data indicated that customer perceptions of Ryanair improved since the implementation of a customer service program. Survey results indicated Ryanair and Southwest did not have statistically significant differences in overall ratings; a change from 2012-13 data where Southwest was rated significantly higher. Additionally, 2016-17 Ryanair customers indicated they would recommend the airline at a significantly higher rate than …
Making Meaning Of The Sketchbook: An Inquiry Into The Conceptualisation, Content And Form Of Sketchbooks, And Associated Pedagogical Practices, In Post-Compulsory Art And Design Education, With Consideration Of The Effects Of New Technologies On Practices., Simon Webster
Plymouth Institute of Education Theses
This research project is an inquiry into, and exploration of, work carried out by students studying on formal Further Education (FE) and Higher Education (HE) Art & Design courses in a specialist Art & Design college. The project focuses on the use of sketchbooks and the effects that new technologies are having on sketchbook practices. The sketchbook has played an important role in Art & Design practices, and education, for hundreds of years and in that time its usage had 'remained virtually untouched by the march of fashions and theories throughout history (Clayton and Weisenthal, 1991:113). But, during the late …
‘Whether The Elves Are Watching Or Not’. Listening To Teachers’ Experiences Regarding Surveillance Technologies In Schools., Martin Edward Edmonds
‘Whether The Elves Are Watching Or Not’. Listening To Teachers’ Experiences Regarding Surveillance Technologies In Schools., Martin Edward Edmonds
Plymouth Institute of Education Theses
Abstract Surveillance technologies have become a normalised aspect of the workplace, and daily life, in England. This is particularly true in schools, where CCTV (Closed Circuit Television) is commonplace, and an audit culture well established. This study explores how teachers feel the atmosphere and culture of a school is influenced by technologized surveillance tools. Three interrelated questions were explored; what effect do surveillance technologies in schools have upon relationships between colleagues and students? What is lost by the application of such surveillance technologies in schools? How can Ivan Illich’s work show us a way to respond? To explore these questions, …
Using Diffractive Activity To (Re)Configure Parental Choice Of Pre-Compulsory Education, Vicky Bamsey
Using Diffractive Activity To (Re)Configure Parental Choice Of Pre-Compulsory Education, Vicky Bamsey
Plymouth Institute of Education Theses
Prompted by the increasing number of children accessing alternatives to mainstream education, this research project was designed to investigate the activity of parents as they engaged in choosing different forms of education for their four-year-old child. The intention was to highlight the individual and entangled activity of parental choice in the English system of education. Facet methodology facilitated an exploration of the multi-dimensionality of each parent’s lived experience. It allowed for flexibility within the research process that used open interviews to follow the narratives of six sets of parents while they were thinking about and making different educational choices for …
A Relational Analysis Of The Writing Cafe: Social Learning, Participant Experiences And Tensions In Higher Education, Christie Pritchard
A Relational Analysis Of The Writing Cafe: Social Learning, Participant Experiences And Tensions In Higher Education, Christie Pritchard
Plymouth Institute of Education Theses
The Writing Café is a social learning space designed to support the development of academic writers within one Higher Education institution. The relationship between learning, space and practices is an emerging area for researchers and this thesis makes a productive contribution to knowledge by using Bourdieu’s relational framework to explore the game from the perspective of the players. The story of the Writing Café connects the practices within a particular sub-field to the wider institutional field and explores the pedagogical possibilities. Considering the Writing Cafe from a micro, social and cultural perspective contributes to the ambition of achieving a social …
Environmental Controls On The Skeletal Mineralogy Of Marine Calcifiers, Kilian Eichenseer
Environmental Controls On The Skeletal Mineralogy Of Marine Calcifiers, Kilian Eichenseer
School of Geography, Earth and Environmental Sciences Theses
Calcifying organisms secrete skeletons consisting of calcium carbonate (CaCO3). The two principle CaCO3 polymorphs used by marine calcifiers are aragonite and calcite. In the abiotic precipitation of CaCO3, the Mg/Ca ratio and the temperature are established controls of polymorph formation, but the importance of other factors, for example salinity, remains uncertain. The first objective of this thesis was to clarify the role of salinity in abiotic CaCO3 precipitation (Chapter 2). Experiments at salinities of 20, 35 and 50 and a Mg/Ca ratio of 2 resulted in co-precipitation of aragonite and calcite in all experiments, and no significant salinity influence on …
Rare Metal Resources In Polymetallic Nodules From The Eastern Equatorial Pacific Ocean, Wycliff Tupiti
Rare Metal Resources In Polymetallic Nodules From The Eastern Equatorial Pacific Ocean, Wycliff Tupiti
School of Geography, Earth and Environmental Sciences Theses
The Clarion-Clipperton fracture zone (CCFZ) in the eastern equatorial Pacific is the area with the greatest interest in terms of metal resources in polymetallic nodules. The nodules are enriched (relative to crustal composition) in economically important metals such as Mn, Ni, Cu, Zn, and so-called critical metals such as Co, Rare Earth Elements and Y (REYs). This project involves the geochemical and mineralogical investigation of nodules from five box cores from the UK claim area in the CCFZ. Bulk geochemical analysis shows that the nodules formed from both hydrogenetic (precipitation from bottom oxic seawater) and diagenetic (precipitation from oxic/suboxic sediment …