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Articles 31 - 38 of 38
Full-Text Articles in Engineering
Analysis And Modeling Of Roofer And Steel Worker Fall Accidents, Hulya Cakan
Analysis And Modeling Of Roofer And Steel Worker Fall Accidents, Hulya Cakan
Wayne State University Dissertations
" ABSTRACT "
" ANALYSIS AND MODELING OF"
" ROOFER AND STEEL WORKER FALL ACCIDENTS"
by
" Hulya Cakan"
" August 2012"
" Advisor: " Dr. Mumtaz Usmen
" Major: " Civil and Environmental Engineering
" Degree: " Doctor of Philosophy
There are more than nine million construction workers in the US. Roofers and steel workers are the highest risk construction trades according to BLS, and fall from elevation accounts for a large percentage of fatalities and injuries among the construction trades.
In this study, 2114 OSHA accident case reports involving roofers and steel workers were …
Investigation And Improvment Of Noise, Vibration And Harshness(Nvh) Properties Of Automotive Panels, Mohammad Al Zubi
Investigation And Improvment Of Noise, Vibration And Harshness(Nvh) Properties Of Automotive Panels, Mohammad Al Zubi
Wayne State University Dissertations
ABSTRACT
INVESTIGATION AND IMPROVEMENT OF NOISE, VIBRATION AND HARSHNESS (NVH) PROPERTIES OF AUTOMOTIVE PANELS
by
MOHAMMAD AL-ZUBI
July 2012
Advisor: Dr. Emmanuel Ayorinde
Major: Mechanical Engineering
Degree: Doctor of Philosophy
The reduction of noise and vibration in and across several components and modules of the automotive, such as the panels, doors, engine covers, seats, and others, is of primary importance. The NVH performance may be a crucial factor in the purchase decisions of numerous buyers. This work investigates through experimental, analytical and computational methods, six groups of sample materials - fabric, foam, honeycomb, monolithic and sandwich, periodic cellular material structures …
Development Of A Computer-Aided Design Supporting System For Transformative Product Design, Keunho Choi
Development Of A Computer-Aided Design Supporting System For Transformative Product Design, Keunho Choi
Wayne State University Dissertations
Modern product innovation is often delivered by fusing technologies from different domains. To meet the current speedy pressure of product innovation, the conceptual design is a very critical stage to develop an innovative product. This research presents a new design paradigm, Transformative Product Design (TPD), to meet the demands in the conceptual design. TPD aims to design a new product from a combination out of a base product and reference products, which have been developed.
To expedite the TPD paradigm, Interaction Network is introduced to represent a product design by following a representative product design representation method in the teleological …
Rfid-Based Business Process And Workflow Management In Healthcare:Design And Implementation, Xiaoyu Ma
Rfid-Based Business Process And Workflow Management In Healthcare:Design And Implementation, Xiaoyu Ma
Wayne State University Dissertations
The healthcare system in the United States is considered one of the most complex systems and has encountered challenges related to patient safety concerns, escalating costs, and unpredictable outcomes. Many of these problems share a common cause - a lack of efficient business process management and visibility into the real-time location, status, and condition of medical resources. The goal of this research is to propose a newly integrated system to model, automate, and monitor healthcare business processes using an automatic data collection technology to record the timing and location of activities and identify their various resources.
This dissertation makes several …
Consensus-Type Stochastic Approximation Algorithms, Yu Sun
Consensus-Type Stochastic Approximation Algorithms, Yu Sun
Wayne State University Dissertations
This work is concerned with asymptotic properties of consensus-type algorithms for networked systems whose topologies switch randomly. The regime-switching process is modeled as a discrete-time Markov chain with a nite state space. The consensus control is achieved by designing stochastic approximation algorithms. In the setup, the regime-switching process (the Markov chain) contains a rate parameter
"Ε> 0 in the transition probability matrix that characterizes how frequently the topology switches. On the other hand, the consensus control algorithm uses a step-size Μ that denes how fast the network states are updated. Depending on their relative values, three distinct scenarios emerge. Under …
Effects Of Transition Metal Doping On Multiferroic Ordering In Ni3v2o8 And Fevo4, Akila Deeghayu Kumarasiri
Effects Of Transition Metal Doping On Multiferroic Ordering In Ni3v2o8 And Fevo4, Akila Deeghayu Kumarasiri
Wayne State University Dissertations
We have studied the effects of doping both non-magnetic and magnetic ions on the phase transitions and multiferroic ordering in two multiferroic oxides; Ni3V2O8 and FeVO4. Magnetic, dielectric, specific heat, polarization and AC susceptibility measurements were used to track changes in phase transition temperatures. We found that the two higher temperature magnetic transitions in Ni3V2O8; TH = 9.1 K and TL = 6.3 K are suppressed to lower temperatures with all transition metal dopants. For Zn doping, the rates of the suppression of both TH and TL with dopant fraction are consistent with simple site dilution for two-dimensional spin systems, …
Gapped Cantilever For The Enhancement Of Strain Sensitivity And Energy Efficiency, Qinglong Zheng
Gapped Cantilever For The Enhancement Of Strain Sensitivity And Energy Efficiency, Qinglong Zheng
Wayne State University Dissertations
Cantilever structures have been widely used in a large variety of transducer applications. For cantilever based transducers, piezoresistive/piezoelectric mechanisms has always been a popular choice due to the advantages of being low cost, simple structure and portability. However, low sensitivity is recognized as a major disadvantage of these transducers compared with optical based measurement. In this research, a gapped cantilever structure is proposed to potentially increase the sensitivity by orders of magnitude. In order to guide the design, an advanced analytical model is developed, and the increased strain sensitivity is theoretically demonstrated. In addition, optimizations with this model interestingly reveal …
Techniques For Sensor-Integrated Robotic Systems: Raman Spectra Analysis, Image Guidance, And Kinematic Calibration, Luke Anthony Reisner
Techniques For Sensor-Integrated Robotic Systems: Raman Spectra Analysis, Image Guidance, And Kinematic Calibration, Luke Anthony Reisner
Wayne State University Dissertations
Robotics and sensor technology have made impressive advancements over the years. There are now robotic systems that help perform surgeries or explore the surface of Mars, and there are sensors that detect trace amounts of explosives or identify diseased human tissue. The most powerful systems integrate robots and sensors, which are natural complements to each other. Sensors can provide information that might otherwise be unavailable due to indirect robotic manipulation (e.g., images of the target environment), and robots can provide suitably precise positioning of an analytical sensor.
To have an effective sensor-integrated robotic system, multiple capabilities are needed in the …