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Articles 1 - 30 of 377

Full-Text Articles in Engineering

High Wind Alerts: A System Created With Observations From The X-Band Teaching And Research Radar, Lauren Warner Aug 2020

High Wind Alerts: A System Created With Observations From The X-Band Teaching And Research Radar, Lauren Warner

The Journal of Purdue Undergraduate Research

Following the August 13, 2011, Indiana State Fair stage collapse tragedy, caused by a wind gust from an approaching thunderstorm, Purdue University enforced a wind speed restriction of 30 mph (13 m s-1) for tents at outdoor events. During these events, volunteers stand outside with handheld anemometers, measuring and reporting when the wind speeds exceed this limit. In this study, we report testing of a new system to automate high-wind alerts based on observations from a Doppler radar, the X-band Teaching and Research Radar (XTRRA), near Purdue’s campus. XTRRA scans over campus at low elevations approximately every 5 minutes ...


Artificial Intelligence For Helicopter Safety: Head Pose Estimation In The Cockpit, Eric William Feuerstein Aug 2020

Artificial Intelligence For Helicopter Safety: Head Pose Estimation In The Cockpit, Eric William Feuerstein

Theses and Dissertations

The recent impact of deep learning algorithms and their major breakthroughs on various aspects of our lives has led to the idea to investigate the application of these algorithms in different problem spaces. One of the novel areas of investigation is the aviation and air traffic control domain; as it offers a prime opportunity to enhance safety within the aviation community. Of particular importance to this community is improving the safety of rotorcraft operations, as this segment of the aviation industry is subject to a higher fatal accident rate than other segments of the industry. The improvement of safety for ...


The Behavior Of Micro Explosive Charge Underwater Explosion Near A Rigid Wall, Kazutaka Kitagawa, Atsushi Abe Aug 2020

The Behavior Of Micro Explosive Charge Underwater Explosion Near A Rigid Wall, Kazutaka Kitagawa, Atsushi Abe

Progress in Scale Modeling, an International Journal

The interactions between an underwater explosion and underwater structures is a research topic related to understanding strong impulsive forces for disaster preparation and prevention. This study is a part of series studying the behavior of underwater explosion bubbles near different boundaries and structures because understanding the boundary phases and the pulsation of bubbles could be a useful predictive tool. Micro explosive underwater explosions were conducted by detonating a very small amount of silver azide; the time evolution and attenuation of effects from the explosion were studied. Both numerical and experimental data were acquired and compared for underwater shock waves, gas ...


The Effects Of Covid-19 On The Commercial Construction Industry In California: A Case Study, Emily G. Bohannon Jun 2020

The Effects Of Covid-19 On The Commercial Construction Industry In California: A Case Study, Emily G. Bohannon

Construction Management

As a result of the COVID-19 pandemic, construction companies across California have been forced to quickly adapt to new protocols and regulations. Since certain areas of California have been more impacted by the pandemic, construction companies in those counties have been forced to comply with stricter coronavirus guidelines. Between the regions researched in this case study, the Bay Area has been affected the most by COVID-19 shutdowns and regulations. Then, Los Angeles County and San Diego County, which faced similar restrictions. The least restrictive area to build during the pandemic is the Central Valley, where there were less reported cases ...


Construction Management Spanish Language Class, Jordan Stephen King Jun 2020

Construction Management Spanish Language Class, Jordan Stephen King

Construction Management

Some research was done by past Cal Poly students into the industry, faculty and student desire for a Spanish Language class through multiple surveys. The results indicated that all parties agreed that a Spanish Language Construction Management class would be beneficial to add to the curriculum. In this project a student at Cal Poly was tasked with creating a Construction Management Spanish Language Class. The deliverables for this project are to provide the Construction Management department with a syllabus, course schedule, thirteen PowerPoints for use as lecture material, thirteen activities for students to apply what they have learned, and thirteen ...


Aircraft Rescue And Fire Fighting Capabilities: Are Today’S Standards Protecting Passenger’S Futures?, Kaetlyn Blocker May 2020

Aircraft Rescue And Fire Fighting Capabilities: Are Today’S Standards Protecting Passenger’S Futures?, Kaetlyn Blocker

Student Works

Few studies have been conducted that have truly considered the relevance and inadequacies of applicable aircraft rescue and firefighting (ARFF) regulations. Fewer still have studied and explored accident cases that directly exemplify the deficiencies and inconsistencies of various regulatory standards and requirements. This study seeks to expose and explain those inadequacies by utilizing a historical, case-study type research method to examine accident cases during which time the governing regulations played a significant role in the ARFF operations. The findings discovered as a result of this multi-case analysis provide evidence that the current regulations governing United States ARFF operations are both ...


The Caster Ladle Lancing System, Andrew Pearson, Alexander Frank, Zachariah Bishop Apr 2020

The Caster Ladle Lancing System, Andrew Pearson, Alexander Frank, Zachariah Bishop

Scholar Week 2016 - present

The Shielded Movable Oxygen Lance Turret is a cart that is easily maneuverable, that allows an operator to safely lance in a steel casting situation with the protection of a shield and an apparatus to aim and burn away debris.The relatively small design and wheels allows the device to be stored and accessed when needed. This was constructed with industrial materials to withstand a harsh working environment of the caster area where molten steel can be between 2700°F and 3000°F. The Turret has a body made of galvanized iron, and shield infused with polycarbonate as it is ...


Alaska Part 135 Operations: The Need For Additional Regulatory Oversight And Continuous Aircraft Tracking, April A. Larsen Apr 2020

Alaska Part 135 Operations: The Need For Additional Regulatory Oversight And Continuous Aircraft Tracking, April A. Larsen

Student Works

With a focus on Alaska, this research illustrates the lack of regulatory oversight pertaining to Title 14 CFR Part 135 operators, including SMS, training, and equipment requirements. As of January 2020, under the Federal Aviation Administration’s NextGen initiative, all aircraft flying in controlled airspace are required to have an Automatic Dependent Surveillance – Broadcast (ADS– B) system installed and operational. Many Alaskan operators fly in hazardous terrain, and marginal weather, with little to no communication, yet ADS-B is not a requirement as they are in uncontrolled airspace. Alaska also lacks vital aviation infrastructure including adequate instrument approach procedures, weather monitoring ...


Increasing Health And Safety Through The Utilization Of 4d Modeling, Rogan J. Wells Mar 2020

Increasing Health And Safety Through The Utilization Of 4d Modeling, Rogan J. Wells

Construction Management

Health and safety is one of the most important aspects of the construction industry. Every year there are thousands of work-related injuries in the construction industry. Avoiding these injuries is of the utmost importance on a jobsite. This paper will analyze how building information modeling, specifically the use of 4D building information modeling, can be utilized to increase the overall health and safety of construction jobsite. An exploratory survey was conducted amongst architecture, engineering, and construction industry professionals who hold a wide range of experience. The aim of this survey was to analyze their knowledge and experiences using building information ...


Empirical Analysis Of Trends In Runway Incursions In The United States From 2001 To 2017, David C. Ison Jan 2020

Empirical Analysis Of Trends In Runway Incursions In The United States From 2001 To 2017, David C. Ison

Journal of Aviation Technology and Engineering

Runway incursions, events in which an aircraft, vehicle, or person is located on a runway surface without authorization, continue to be a constant threat to aviation safety. Previously identified on the ‘‘Most Wanted’’ list of aviation safety issues by the National Transportation Safety Board, the Federal Aviation Administration (FAA) has spent significant amounts of money and effort to address runway incursions. Little empirical evidence has been collected on the effectiveness of such efforts. Moreover, the data that are available provide a confusing landscape of contradicting findings. Some FAA publications claim that runway incursions are decreasing while the evidence provided in ...


Vehicle Operator Attention Monitor, Matthew Krispinsky, Matt Marsek, Matthew Mayfield, Brian Call Jan 2020

Vehicle Operator Attention Monitor, Matthew Krispinsky, Matt Marsek, Matthew Mayfield, Brian Call

Williams Honors College, Honors Research Projects

Motor vehicle operators’ attention levels can be monitored to improve driver safety. By recording and analyzing the drivers eye gaze, hand position, vehicle speed and engine rpm the driver’s attention can be determined. A Raspberry Pi will be the main processing unit. Data will be pulled and analyzed from the OBD-II port on vehicle speed and engine rpm. The system will be powered from a 12V, 4A pin on the OBD-II port connected to the car battery. A webcam will be used to track the pupil location and determine when the driver is looking at the road. A battery ...


Impact Of Increased Precipitation On Midwestern Construction, Monica Feltman Jan 2020

Impact Of Increased Precipitation On Midwestern Construction, Monica Feltman

Williams Honors College, Honors Research Projects

This paper presents the current impact of increased precipitation in the Midwest on the construction industry. Mainly, the impact on jobsite safety, increasing insurance rates, and the resulting changes in design codes, or lack thereof. The goal of this independent research is to gather a better understanding of the influence of these changes, because only then can one accurately seek to combat their harmful effects. As a vital element of the global economy, the construction industry must be conscious of their changing relationship with the environment around them. Therefore, understanding the affects of harmful climate change, will increase awareness of ...


Repairer Reporting System User Analysis For Sms Compliance In Aviation Maintenance, Mark D. Miller, Bettina Mrusek Jan 2020

Repairer Reporting System User Analysis For Sms Compliance In Aviation Maintenance, Mark D. Miller, Bettina Mrusek

Publications

To resolve the issue of human error in maintenance the REPAIRER reporting system is revisited as it has great potential by combining a human factors analysis with a risk management safety reporting mechanism. It is also timely as a human factors centered safety reporting method like the REPAIRER could now be feasibly implemented through the new mandatory FAA (Federal Aviation Administration) FAR 121 requirement to use SMS (Safety Management System) pillars and through the new FAA MxHF human factors training. With the current FAA support in place and the ever growing need to add human factors to combat human error ...


Covid-19 And Public Transportation: Current Assessment, Prospects, And Research Needs, Alejandro Tirachini, Oded Cats Jan 2020

Covid-19 And Public Transportation: Current Assessment, Prospects, And Research Needs, Alejandro Tirachini, Oded Cats

Journal of Public Transportation

The COVID-19 pandemic poses a great challenge for contemporary public transportation worldwide, resulting from an unprecedented decline in demand and revenue. In this paper, we synthesize the state-of-the-art, up to early June 2020, on key developments regarding public transportation and the COVID-19 pandemic, including the different responses adopted by governments and public transportation agencies around the world, and the research needs pertaining to critical issues that minimize contagion risk in public transportation in the so-called post-lockdown phase. While attempts at adherence to physical distancing (which challenges the very concept of mass public transportation) are looming in several countries, the latest ...


Analysis Of Runway Incursion Trends: Implications For Cost-Benefit Analysis Of Mitigation Investments, David C. Ison Jan 2020

Analysis Of Runway Incursion Trends: Implications For Cost-Benefit Analysis Of Mitigation Investments, David C. Ison

International Journal of Aviation, Aeronautics, and Aerospace

This causal-comparative and correlation study investigated the costs of runway incursion safety improvements in relation to their effectiveness to assess potential aviation system benefits.Two airports (Los Angeles International and Dallas-Ft. Worth International), which were early adopters of Runway Status Lights (RWSL), a runway incursion technology, were targeted in this analysis. Findings indicated that there were no significant differences in counts or rates of Category A, B, and D incursions at LAX and DFW when comparing the time periods before versus after RWSL installation. Category C counts and rates were found to have increased significantly after RWSL installation. The findings ...


Managing Safety Risks In Airline Maintenance Outsourcing, Rajee Olaganathan Dr., Mark Miller Dr., Bettina M. Mrusek Dr. Jan 2020

Managing Safety Risks In Airline Maintenance Outsourcing, Rajee Olaganathan Dr., Mark Miller Dr., Bettina M. Mrusek Dr.

International Journal of Aviation, Aeronautics, and Aerospace

The U.S aviation industry faced severe financial losses after the 9/11 incident. The financial loss that occurred between 2000 and 2009 in the U.S. alone was $54 billion dollars. One of the operational strategies adopted by air carriers to overcome this hurdle was to outsource aircraft maintenance. Initially, this was accomplished in both home and off-shore locations. Unionized labor relations in the US ultimately forced these organizations to outsource to non-unionized labor sources in foreign countries. However, due to the upsurge in accidents and incidents that resulting from maintenance failures, the concept of outsourcing maintenance became a ...


Risk - A Multi-Layered Approach, Peter S. Neff Jan 2020

Risk - A Multi-Layered Approach, Peter S. Neff

International Journal of Aviation, Aeronautics, and Aerospace

This article discusses the relationship between the mandates to achieve increased operational safety and the application of risk management strategies. That commercial airlines must operate at the highest level of safety is mandated by statute. FAA regulation, 14 CFR part 5, outlines the FAA response to the requirements of ICAO Annex 19, Safety Management, by establishing requirements for certificate holders to develop a Safety Management System with 4 components: (a) Safety Policy; (b) Safety Risk Management; (c) Safety Assurance; and (d) Safety Promotion. Safety is a tangible and intangible element foundational to the successful commercial airline sector. A structured multi-layered ...


Advanced Security Analysis For Emergent Software Platforms, Mohannad Alhanahnah Dec 2019

Advanced Security Analysis For Emergent Software Platforms, Mohannad Alhanahnah

Computer Science and Engineering: Theses, Dissertations, and Student Research

Emergent software ecosystems, boomed by the advent of smartphones and the Internet of Things (IoT) platforms, are perpetually sophisticated, deployed into highly dynamic environments, and facilitating interactions across heterogeneous domains. Accordingly, assessing the security thereof is a pressing need, yet requires high levels of scalability and reliability to handle the dynamism involved in such volatile ecosystems.

This dissertation seeks to enhance conventional security detection methods to cope with the emergent features of contemporary software ecosystems. In particular, it analyzes the security of Android and IoT ecosystems by developing rigorous vulnerability detection methods. A critical aspect of this work is the ...


The Business Case For Industrial Safety: Revealing The Comprehensive Value Of Ergonomic Investments For Manufacturing Enterprises In Industry 4.0, Shane Stan Oct 2019

The Business Case For Industrial Safety: Revealing The Comprehensive Value Of Ergonomic Investments For Manufacturing Enterprises In Industry 4.0, Shane Stan

Honors Theses, University of Nebraska-Lincoln

How can today’s manufacturing enterprises construct, implement, and optimize modern safety initiatives in a manner that will present maximum return on investment and facilitate enterprise growth? Furthermore, how can these manufacturers assure individual ergonomic investments become part of a larger strategy to facilitate organizational change in safety? This work addresses these questions by placing industrial ergonomics in a business improvement context which comprehensively presents the financial returns and growth opportunities poised by modern safety initiatives. Additionally, to further strengthen the business case for industrial safety, an ergonomic action planning framework is established to guide the creation of holistic safety ...


Numerical Simulation Of Shock Response And Dynamic Fracture Of A Concrete Dam Subjected To Impact Load, Lu Lu, Xin Li, Jing Zhou, Genda Chen, Dong Yun Sep 2019

Numerical Simulation Of Shock Response And Dynamic Fracture Of A Concrete Dam Subjected To Impact Load, Lu Lu, Xin Li, Jing Zhou, Genda Chen, Dong Yun

Lu Lu

The shock response and dynamic fracture of concrete gravity dams under impact load are the key problems to evaluate the antiknock safety of the dam. This study aims at understanding the effects of impact shock on the elastic response and dynamic fracture of concrete gravity dams. Firstly, this paper uses acceleration records of a concrete gravity dam under impact to establish the correct way to determine the concrete gravity dam of the fundamental frequency and present cut sheets multi-degree-of-freedom dynamic modeling. Under strong impact loading, the constitutive relation of concrete gravity dam and the highest frequency of the impact are ...


Verification Of Stochastic Reach-Avoid Using Rkhs Embeddings, Adam J. Thorpe Jul 2019

Verification Of Stochastic Reach-Avoid Using Rkhs Embeddings, Adam J. Thorpe

Electrical and Computer Engineering ETDs

A solution to the terminal-hitting and first-hitting stochastic reach-avoid problem for a Markov control process is presented. This solution takes advantage of a nonparametric representation of the stochastic kernel as a conditional distribution embedding within a reproducing kernel Hilbert space (RKHS). Because the disturbance is modeled as a data-driven stochastic process, this representation avoids intractable integrals in the dynamic recursion of the reach-avoid problem since the expectations can be calculated as an inner product within the RKHS. An example using a high-dimensional chain of integrators is presented, as well as for Clohessy-Wiltshire-Hill (CWH) dynamics.


Analysis Of The Effects Of Adaptive Ramp Metering On Measures Of Efficiency With A Proposed Framework For Safety Evaluation, Jacky Loh Jun 2019

Analysis Of The Effects Of Adaptive Ramp Metering On Measures Of Efficiency With A Proposed Framework For Safety Evaluation, Jacky Loh

Master's Theses

Adaptive ramp metering (ARM) is a widely popular intelligent transportation system (ITS) tool that boasts the ability to reduce congestion and streamline traffic flow during peak hour periods while maintaining a lower implementation cost than traditional methods such as freeway widening. This thesis explores the effectiveness of ARM implementation on an 18 mile segment of the Interstate 80 (I-80) corridor in the Bay Area residing in northern California. Smaller segments of this particular segment were analyzed to determine the effective length of ARM on efficiency at various lengths originating from a known bottleneck location. Efficiency values were also compared against ...


The Changing Face Of Airmanship And Safety Culture Operating Unmanned Aircraft Systems, Tracy Lamb May 2019

The Changing Face Of Airmanship And Safety Culture Operating Unmanned Aircraft Systems, Tracy Lamb

Student Works

The notion of using drones for commercial purposes has evolved in the past 5 years from the initial “boom” of excitement around this, somewhat of a novelty and curiosity, to more calculated and sophisticated use of unmanned aircraft systems (UAS), or drones. In the hands of true professionals, drones can offer highly efficient and profitable solutions for industrial, and commercial inspections and other data capturing tasks. The appetite for safe and efficient collection of data is a changing face of safety cultures and how teams and individuals apply airmanship principles, and how inspection crew and UAS crew interact. UAS are ...


34-Inch Tall Three Beam Transition To Concrete Buttress, Scott Rosenbaugh, Wyatt Fallet, Ronald K. Faller, Robert W. Bielenberg, Jennifer Schmidt Mar 2019

34-Inch Tall Three Beam Transition To Concrete Buttress, Scott Rosenbaugh, Wyatt Fallet, Ronald K. Faller, Robert W. Bielenberg, Jennifer Schmidt

Nebraska Department of Transportation Research Reports

Roadway resurfacing and overlay projects effectively reduce the height of roadside barriers placed adjacent to the roadway, which can negatively affect their crashworthiness. More recently, bridge rails and concrete barriers have been installed with slightly increased heights to account for future overlays. However, adjacent guardrails and approach transitions have not yet been modified to account for overlays. The objective of this project was to develop an increased-height, approach guardrail transition (AGT) to be crashworthy both before and after roadway overlays of up to 3 in. (76 mm).

A 34-in. (864-mm) tall, thrie beam transition was designed such that the system ...


Analysis Of Blade Fragment Risk At A Wind Energy Facility, Scott Larwood, David Simms Mar 2019

Analysis Of Blade Fragment Risk At A Wind Energy Facility, Scott Larwood, David Simms

School of Engineering and Computer Science Faculty Articles

An analysis was performed to determine the risk posed by wind turbine fragments on roads and buildings at the National Wind Technology Center at the National Renewable Energy Laboratory. The authors used a previously developed model of fragment trajectory and took into account the wind speed/direction distribution at the site and the probability of rotor failure. The site‐specific risk was assessed by determining the likelihood of impact and related consequences. For both the roads and buildings, the risk varied from low to routine, which was considered acceptable.


Determination Of The Technical Condition Of Buildings And Structures On The Basis Of Verification Calculations, U. Djurayev, A. Mingyasharova Jan 2019

Determination Of The Technical Condition Of Buildings And Structures On The Basis Of Verification Calculations, U. Djurayev, A. Mingyasharova

Problems of Architecture and Construction

This article is dedicated to one of the actual problems of modernization and renovation of the existing structures and buildings. The technical condition of buildings lace estimated and through to strengthening the building in order to prolonging the life and seismic safety of buildings and structures are studied.


Comprehending The Safety Paradox And Privacy Concerns With Medical Device Remote Patient Monitoring, Marc Doyle Jan 2019

Comprehending The Safety Paradox And Privacy Concerns With Medical Device Remote Patient Monitoring, Marc Doyle

CCE Theses and Dissertations

Medical literature identifies a number of technology-driven improvements in disease management such as implantable medical devices (IMDs) that are a standard treatment for candidates with specific diseases. Among patients using implantable cardiac defibrillators (ICD), for example, problems and issues are being discovered faster compared to patients without monitoring, improving safety. What is not known is why patients report not feeling safer, creating a safety paradox, and why patients identify privacy concerns in ICD monitoring.

There is a major gap in the literature regarding the factors that contribute to perceived safety and privacy in remote patient monitoring (RPM). To address this ...


A Novel Method Of Near-Miss Event Detection With Software Defined Radar In Improving Railyard Safety, Subharthi Banerjee, Jose Santos, Michael Hempel, Pejman Ghasemzadeh, Hamid Sharif Jan 2019

A Novel Method Of Near-Miss Event Detection With Software Defined Radar In Improving Railyard Safety, Subharthi Banerjee, Jose Santos, Michael Hempel, Pejman Ghasemzadeh, Hamid Sharif

Faculty Publications from the Department of Electrical and Computer Engineering

Railyards are one of the most challenging and complex workplace environments in any industry. Railyard workers are constantly surrounded by dangerous moving objects, in a noisy environment where distractions can easily result in accidents or casualties. Throughout the years, yards have been contributing 20–30% of the total accidents that happen in railroads. Monitoring the railyard workspace to keep personnel safe from falls, slips, being struck by large object, etc. and preventing fatal accidents can be particularly challenging due to the sheer number of factors involved, such as the need to protect a large geographical space, the inherent dynamicity of ...


Barriers And Motivators For Tractors Rops Retrofitting In Iowa, Charles V. Schwab, J. Gordon Arbuckle, H. Mark Hanna Jan 2019

Barriers And Motivators For Tractors Rops Retrofitting In Iowa, Charles V. Schwab, J. Gordon Arbuckle, H. Mark Hanna

Sociology Publications

Iowa State University Extension and Outreach conducted an assessment of Iowa farm operators‘ perceptions of the barriers and motivators when considering retrofitting tractors with rollover protective structures (ROPS). A statewide sample of approximately 2,000 farm operators was surveyed in the 2017 Iowa Farm and Rural Life Poll. A series of questions was asked to evaluate the importance of potential barriers to decisions to not retrofit a tractor and potential motivators that could influence the decision to retrofit or purchase a tractor with ROPS. The survey received a 48% response rate (999 responses). Among the 76% of Iowa farm operators ...


Evaluation Of Work Zone Safety Using The Shrp2 Naturalistic Driving Study Data, Amrita Goswamy Jan 2019

Evaluation Of Work Zone Safety Using The Shrp2 Naturalistic Driving Study Data, Amrita Goswamy

Graduate Theses and Dissertations

Work zones provide challenging and hazardous conditions not only for vehicle drivers, but also for highway workers who are injured or killed by errant vehicles. Over, 96,000 work zone crashes occurred in 2015 which equates to a work zone crash every 5.4 minutes. Several factors have been noted as contributing to work zone crashes. Driver factors have not been as well studied as other factors. The main objective of this study was to evaluate safety in work zones utilizing the SHRP2, Roadway Information Database (511 data) to identify potential work-zones. The study looked into the effectiveness of each ...