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Articles 1 - 30 of 115
Full-Text Articles in Other Engineering
Subjective And Objective Results 1 Year After Robotic Sacrocolpopexy Using A Lightweight Y-Mesh, Patrick Culligan, Emil Gurshumov, Christa Lewis, Jennifer Priestley
Subjective And Objective Results 1 Year After Robotic Sacrocolpopexy Using A Lightweight Y-Mesh, Patrick Culligan, Emil Gurshumov, Christa Lewis, Jennifer Priestley
Jennifer L. Priestley
Introduction and hypothesis: The objective of this study was to assess outcomes following robotic sacrocolpopexy using a lightweight polypropylene Y-mesh. Methods: During our study period, all patients who underwent robotic sacrocolpopexy were enrolled in this single-arm prospective trial. Endpoints included Pelvic Organ Prolapse Quantification (POP-Q) values; Pelvic Floor Distress Inventory, short form 20 (PFDI-20); Pelvic Floor Impact Questionnaire, short form 7 (PFIQ-7); Surgical Satisfaction scores; and the Sandvik Incontinence Severity Index. All surgeries were performed with a pre-configured monofilament type 1 polypropylene Y-mesh (Alyte©, C.R. Bard, Covington, GA, USA). Cure rates at 12 months were calculated using two separate definitions: …
Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski
Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Sombolestani_Thesis.Pdf, Shayan Sombolestani
Sombolestani_Thesis.Pdf, Shayan Sombolestani
Shayan Sombolestani
Reference Data Set Of Volcanic Ash Physicochemical And Optical Properties, A. Vogel, S. Diplas, A. J. Durant, A. S. Azar, M. F. Sunding, William I. Rose, A. Sytchkova, C. Bonadonna, K. Krüger, A. Stohl
Reference Data Set Of Volcanic Ash Physicochemical And Optical Properties, A. Vogel, S. Diplas, A. J. Durant, A. S. Azar, M. F. Sunding, William I. Rose, A. Sytchkova, C. Bonadonna, K. Krüger, A. Stohl
William I. Rose
Uncertainty in the physicochemical and optical properties of volcanic ash particles creates errors in the detection and modeling of volcanic ash clouds and in quantification of their potential impacts. In this study, we provide a data set that describes the physicochemical and optical properties of a representative selection of volcanic ash samples from nine different volcanic eruptions covering a wide range of silica contents (50–80 wt % SiO2). We measured and calculated parameters describing the physical (size distribution, complex shape, and dense-rock equivalent mass density), chemical (bulk and surface composition), and optical (complex refractive index from ultraviolet to near-infrared wavelengths) …
Hispanic Maternal And Children's Perceptions Of Neighborhood Safety Related To Walking And Cycling, Norma Olvera, Dennis W. Smith, Chanam Lee, Jian Liu, Jay Lee, Stephanie Kellam, Jun-Hyun Kim
Hispanic Maternal And Children's Perceptions Of Neighborhood Safety Related To Walking And Cycling, Norma Olvera, Dennis W. Smith, Chanam Lee, Jian Liu, Jay Lee, Stephanie Kellam, Jun-Hyun Kim
Jian Liu
This study examined neighborhood safety as perceived by children (mean age=10 years) and their mothers, and its association with children's physical activity. For all eight safety items examined, children perceived their environment as less dangerous than mothers (p<0.05). None of the multiple regression models predicting children's physical activity by safety perceptions were significant (p>0.10). The maternal perception model explained the highest percentage of variance (R2=0.26), compared to the children's perception model (R2=0.22). Findings suggest that future studies should explore relations between self-reported and objectively measured safety barriers to Hispanic youth walking and cycling.
A Review Focujsed On The Psychological Effectiveness Of Tai Chi On Different Populations, Long Zhang, Thomas Lowder, Jian Liu
A Review Focujsed On The Psychological Effectiveness Of Tai Chi On Different Populations, Long Zhang, Thomas Lowder, Jian Liu
Jian Liu
No abstract provided.
Local Dynamic Stability Associated With Load Carrying, Jian Liu, Thurmon E. Lockhart
Local Dynamic Stability Associated With Load Carrying, Jian Liu, Thurmon E. Lockhart
Jian Liu
Objectives: Load carrying tasks are recognized as one of the primary occupational factors leading to slip and fall injuries. Nevertheless, the mechanisms associated with load carrying and walking stability remain illusive. The objective of the current study was to apply local dynamic stability measure in walking while carrying a load, and to investigate the possible adaptive gait stability changes. Methods: Current study involved 25 young adults in a biomechanics research laboratory. One tri-axial accelerometer was used to measure three-dimensional low back acceleration during continuous treadmill walking. Local dynamic stability was quantified by the maximum Lyapunov exponent (maxLE) from a nonlinear …
Aging Effect On Foot Dynamics During Unexpected Slips, Jian Liu, Thurmon E. Lockhart
Aging Effect On Foot Dynamics During Unexpected Slips, Jian Liu, Thurmon E. Lockhart
Jian Liu
Slip-induced fall accidents have been recognized as a serious threat to the health of the elderly.The objective of the current study was to investigate the aging effect on the biomechanical reactions of both perturbed foot and unperturbed foot to the unexpected slips. Nineteen younger (mean age: 25.0 years old) and twenty-one older (mean age: 71.2 years old) adults were involved in a laboratory study,in which slippery surface was induced during walking without their awareness.The reactive responses of both slipping foot and unperturbed foot were quantified by optical motion capture system and force platforms.The results indicate a characteristic toe-touch strategy by …
Silver Nanoparticle Removal From Drinking Water: Flocculation/Sedimentation Or Filtration?, Desmond F. Lawler, Anne M. Mikelonis, Ijung Kim, Boris L.T. Lau, Sungmin Youn
Silver Nanoparticle Removal From Drinking Water: Flocculation/Sedimentation Or Filtration?, Desmond F. Lawler, Anne M. Mikelonis, Ijung Kim, Boris L.T. Lau, Sungmin Youn
Sungmin Youn
Silver nanoparticles are used in a wide variety of consumer products and are therefore rapidly becoming ubiquitous in the natural environment; they can be expected to be found in the natural waters used as drinking water supplies. This research investigated whether such particles could be expected to be removed in conventional water treatment plants such as flocculation and filtration. Both flocculation and granular media filtration experiments with citrate-capped silver nanoparticles were performed at different ionic strengths and in the presence and absence of natural organic matter. The results were generally consistent with theories of particle destabilization that have been developed …
Effects Of Reverberation And Noise On Speech Comprehension By Native And Non-Native English-Speaking Listeners, Z. Ellen Peng, Lily M. Wang, Siu-Kit Lau, Adam M. Steinbach
Effects Of Reverberation And Noise On Speech Comprehension By Native And Non-Native English-Speaking Listeners, Z. Ellen Peng, Lily M. Wang, Siu-Kit Lau, Adam M. Steinbach
Lily M Wang
Previous studies have demonstrated the negative impact of adverse signal-to-noise-ratios on non-native English-speaking listeners' performance on speech recognition using recall tasks, as well as implied that comprehension skills were more impaired than recognition skills under reverberation and noise. The authors have themselves previously conducted a pilot study on three native and three non-native Englishspeaking listeners to examine the effects of reverberation and noise using speech comprehension tasks. Those results suggested that speech comprehension performance is worse under longer reverberation times (RT), and that a longer RT is more detrimental to speech comprehension by non-native listeners than native listeners. This paper …
How Tonality And Loudness Of Noise Relate To Annoyance And Task Performance” Noise Control Eng. J. 65(2), 71-82., Joonhee Lee, Jennifer M. Francis, Lily M. Wang
How Tonality And Loudness Of Noise Relate To Annoyance And Task Performance” Noise Control Eng. J. 65(2), 71-82., Joonhee Lee, Jennifer M. Francis, Lily M. Wang
Lily M Wang
Audible tones in noise generated by building mechanical equipment can be a leading cause of complaints from occupants. A number of metrics have been developed to quantify prominence of a tone, but previous work has shown that the impact of a certain tonality appears to vary with the level of the broadband noise signal. More work on how tonal signals of varying tonality, tone frequency and broadband noise levels relate to annoyance and task performance is needed. This paper investigates such relationships between current noise metrics, annoyance and task performance under assorted tonal noise conditions through subjective testing. Participants rated …
Acoustic Tweets And Blogs: Using Social Media In An Undergraduate Acoustics Course, Lily M. Wang
Acoustic Tweets And Blogs: Using Social Media In An Undergraduate Acoustics Course, Lily M. Wang
Lily M Wang
Each fall, the author teaches an undergraduate architectural acoustics course to around 40 third-year architectural engineering students at the University of Nebraska. Beginning in 2011, a social media component was introduced to explore the use of this technology and how it may supplement the students' learning experience. Students were given an opportunity to receive extra credit by using Twitter and/or blogging about course material using a set hashtag (#AE3300) or through the course website. Results were positive, and the author will discuss pros and cons that she has experienced in adding this social media component. Suggestions for future implementations and …
A Need For Evidence-Based And Multidisciplinary Research To Study The Effects Of The Interaction Of School Environmental Conditions On Student Achievement, Josephine Lau, Lily M. Wang, Clarence Waters, James A. Bovaird
A Need For Evidence-Based And Multidisciplinary Research To Study The Effects Of The Interaction Of School Environmental Conditions On Student Achievement, Josephine Lau, Lily M. Wang, Clarence Waters, James A. Bovaird
Lily M Wang
With funding from the U.S. Environmental Protection Agency’s (EPA) Healthy Schools initiative, a research team from the University of Nebraska– Lincoln (UNL) is currently working on establishing how environmental conditions in K-12 school buildings impact student scholastic achievement. The objectives of the research project are: (1) to study comprehensively the impacts of a wide set of indoor environmental factors (including indoor air quality, thermal, lighting and acoustic conditions) on student achievement; (2) to investigate how these environmental conditions interact with each other to impact student achievement; (3) to rank order the environmental variables in terms of their relative impact on …
Decision-Making Swarms, Sanza Kazadi, George Jeno, Xinyu Guan, Nick Nusgart, Andriy Sheptunov
Decision-Making Swarms, Sanza Kazadi, George Jeno, Xinyu Guan, Nick Nusgart, Andriy Sheptunov
Sanza Kazadi
Measuring The Effectiveness Of Team-Based Learning Outcomes In A Human Factors Course, Michael C. Dorneich, Sarah E. Bickelhaupt, Cassandra Dorius, Georgeanne M. Artz, Holly Bender, Laura Bestler, Beth Caissie, Sandra W. Gahn, Keri L. Jacobs, Monica H. Lamm, Lisa Orgler, Jane M. Rongerude, Ann Smiley-Oyen, Richard T. Stone
Measuring The Effectiveness Of Team-Based Learning Outcomes In A Human Factors Course, Michael C. Dorneich, Sarah E. Bickelhaupt, Cassandra Dorius, Georgeanne M. Artz, Holly Bender, Laura Bestler, Beth Caissie, Sandra W. Gahn, Keri L. Jacobs, Monica H. Lamm, Lisa Orgler, Jane M. Rongerude, Ann Smiley-Oyen, Richard T. Stone
Lisa Orgler
Deriving An Indoor Environmental Index For Portuguese Office Buildings, João F. Gomes
Deriving An Indoor Environmental Index For Portuguese Office Buildings, João F. Gomes
João F Gomes
No abstract provided.
Experimental Investigation Of The Velocity Field In Buoyant Diffusion Flames Using Piv And Tpiv Algorithm, Lulu Sun, Xiangyang Zhou, Shankar Mahalingam, David R. Weise
Experimental Investigation Of The Velocity Field In Buoyant Diffusion Flames Using Piv And Tpiv Algorithm, Lulu Sun, Xiangyang Zhou, Shankar Mahalingam, David R. Weise
Lulu Sun
We investigated a simultaneous temporally and spatially resolved 2-D velocity field above a burning circular pan of alcohol using particle image velocimetry (PIV). The results obtained from PIV were used to assess a thermal particle image velocimetry (TPIV) algorithm previously developed to approximate the velocity field using the temperature field, simultaneously captured by an infrared (IR) thermal camera. By tracing “thermal particles,” which were assumed to be virtual particles that corresponded to pixels of temperature values in successive IR images, the TPIV algorithm estimated a larger scale instantaneous velocity field than either a single-point velocity measurement (e.g., LDV) or the …
Ir-Based Estimation Of Velocities Above Flames Spreading Over Different Fuels, Lulu Sun, Xiangyang Zhou, David R. Weise, Shankar Mahalingam
Ir-Based Estimation Of Velocities Above Flames Spreading Over Different Fuels, Lulu Sun, Xiangyang Zhou, David R. Weise, Shankar Mahalingam
Lulu Sun
Wildfire spread in living vegetation such as chaparral in California and eucalyptus forests in Australia often causes significant damage to infrastructure and ecosystems. A physically based empirical model to predict fire spread rate is used in the United States to assist in a variety of fire management operations. The spread model does not adequately describe the chemical processes of combustion in live fuels. Prior to describing and modeling the chemical processes of combustion in wildland fuels using computational fluid dynamics, we are investigating a technique to non-intrusively measure flame gas velocities using thermal imagery. By tracing "hot" pixels through successive …
Fire Behavior Of Some Southern California Live Chaparral Fuels, Lulu Sun, Xiangyang Zhou, Shankar Mahalingam, David R. Weise
Fire Behavior Of Some Southern California Live Chaparral Fuels, Lulu Sun, Xiangyang Zhou, Shankar Mahalingam, David R. Weise
Lulu Sun
Wildfire spread in living vegetation, such as chaparral in southern California, often causes significant damage to infrastructure and ecosystems. In order to study wildfire spread in living vegetation, four of the most common chaparral in southern California, chamise, manzanita, scrub oak and ceanothus, were burned and compared. The observed fire behavior included mass loss rate, flame height, temperature structure and velocity field above the burning fuel bed. It was observed that flame height increases mainly with heat release rate. By using successive images of the temperature field, a recently developed thermal particle image velocity (TPIV) algorithm was applied to estimate …
Numerical Simulation Of Live Chaparral Fire Behavior Using Firetec, Lulu Sun, Xiangyang Zhou, Shankar Mahalingam, Jesse Canfield, Rodman Linn
Numerical Simulation Of Live Chaparral Fire Behavior Using Firetec, Lulu Sun, Xiangyang Zhou, Shankar Mahalingam, Jesse Canfield, Rodman Linn
Lulu Sun
Fire spread through chaparral fuels is a significant feature of wildland fire in southern California. In order to study the detailed physical processes involved during fire spread, FIRETEC, a coupled atmosphere/wildfire behavior model was refined to examine chaparral fire behavior. FIRETEC combines a sophisticated fine-scale model to simulate a three- dimensional wildfire, moving over a terrain-following finite volume grid, with the motions of the local atmosphere. It accounts for the microscopic details of a fire with macroscopic resolution by dividing quantities into mean and fluctuating parts and the resulting transport equations are solved by using a finite difference method. In …
Influence Of Biofield Treatment On Physical And Structural Characteristics Of Barium Oxide And Zinc Sulfide, Mahendra Trivedi, Rama Mohan Tallapragada, Alice Branton, Dahryn Trivedi, Omprakash Latiyal, Snehasis Jana
Influence Of Biofield Treatment On Physical And Structural Characteristics Of Barium Oxide And Zinc Sulfide, Mahendra Trivedi, Rama Mohan Tallapragada, Alice Branton, Dahryn Trivedi, Omprakash Latiyal, Snehasis Jana
Mahendra Kumar Trivedi
The Theological Origins Of Engineering, Brad Kallenberg
The Theological Origins Of Engineering, Brad Kallenberg
Brad J. Kallenberg
Knowledge of our roots can sometimes help us figure out how we ought to proceed. Many claim that engineering began in ancient antiquity with the Egyptian pyramids, Archimedes' inventions, or the Roman aqueducts. Others give contemporary engineering a more recent history, tracing its origins to the Industrial Revolution or the Enlightenment. Yet what is often overlooked is the fact that contemporary engineering owes part of its identity to medieval monasticism. The advantage of remembering this history is the bearing it has on the questions "What is engineering for?" and "How ought engineering be practiced?" Michael Davis makes the claim that, …
Investigation On The Soundscape Preference And Perception Of Highlands Environment: A Preliminary Study, Nazli Che Din, Engku Mastura Engku Ahmad, Hazreena Hussein
Investigation On The Soundscape Preference And Perception Of Highlands Environment: A Preliminary Study, Nazli Che Din, Engku Mastura Engku Ahmad, Hazreena Hussein
Hazreena Hussein
Highland environment is one of the popular tourist destinations because it holds a rich array of natural resources. However, the economic and development growth of highlands gave potential effect of biological wealth and environment surrounding. Noise pollution in developing highland area could intrude the ability to comprehend of natural and environmental sounds. As preliminary, the main objective of this research is to identify factors and elements that characterise the soundscape in three selected green areas on highland environment. The research was carried out through a series of field measurement and audio-visual experiment. At the first stage of the study, the …
Lessons Learned From A Simulation Project In Construction Education, Saeed Rokooei, James Goedert
Lessons Learned From A Simulation Project In Construction Education, Saeed Rokooei, James Goedert
Saeed Rokooei
Workshop | Body Worn Video Recorders: The Socio-Technical Implications Of Gathering Direct Evidence, Katina Michael, Alexander Hayes
Workshop | Body Worn Video Recorders: The Socio-Technical Implications Of Gathering Direct Evidence, Katina Michael, Alexander Hayes
Alexander Hayes Mr.
- From in-car video recording to body-worn video recording
- Exploring available technologies: how do they work, pros and cons
- Storing direct evidence in secure storage: factors to consider
- Citizens “shooting” back with POV tech – what are their rights?
- Crowdsourced sousveillance- harnessing public data for forensic profiling
- Police force policies and practices on the application of new media
Aliasing Reduction In Staring Infrared Imagers Utilizing Subpixel Techniques, Joseph C. Gillette, Thomas M. Stadtmiller, Russell C. Hardie
Aliasing Reduction In Staring Infrared Imagers Utilizing Subpixel Techniques, Joseph C. Gillette, Thomas M. Stadtmiller, Russell C. Hardie
Russell C. Hardie
We introduce and analyze techniques for the reduction of aliased signal energy in a staring infrared imaging system. A standard staring system uses a fixed two-dimensional detector array that corresponds to a fixed spatial sampling frequency determined by the detector pitch or spacing. Aliasing will occur when sampling a scene containing spatial frequencies exceeding half the sampling frequency. This aliasing can significantly degrade the image quality. The aliasing reduction schemes presented here, referred to as microscanning, exploit subpixel shifts between time frames of an image sequence. These multiple images are used to reconstruct a single frame with reduced aliasing. If …
Anomaly Detection In Hyperspectral Imagery: Comparison Of Methods Using Diurnal And Seasonal Data, Patrick C. Hytla, Russell C. Hardie, Michael T. Eismann, Joseph Meola
Anomaly Detection In Hyperspectral Imagery: Comparison Of Methods Using Diurnal And Seasonal Data, Patrick C. Hytla, Russell C. Hardie, Michael T. Eismann, Joseph Meola
Russell C. Hardie
The use of hyperspectral imaging is a fast growing field with many applications in the civilian, commercial and military sectors. Hyperspectral images are typically composed of many spectral bands in the visible and infrared regions of the electromagnetic spectrum and have the potential to deliver a great deal of information about a remotely sensed scene. One area of interest regarding hyperspectral images is anomaly detection, or the ability to find spectral outliers within a complex background in a scene with no a priori information about the scene or its specific contents. Anomaly detectors typically operate by creating a statistical background …
Using Simulated Virtual Interactivity In Construction Education, Saeed Rokooei, James Goedert
Using Simulated Virtual Interactivity In Construction Education, Saeed Rokooei, James Goedert
Saeed Rokooei
Zespół Energii Odnawialnej I Zrównoważonego Rozwoju (Eozr), Wojciech M. Budzianowski
Zespół Energii Odnawialnej I Zrównoważonego Rozwoju (Eozr), Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Model For Setting Priority Construction Project Objectives Aligned With Monetary Incentives, Ruben Ndihokubwayo, Gerrit Crafford, Fanie Buys
Model For Setting Priority Construction Project Objectives Aligned With Monetary Incentives, Ruben Ndihokubwayo, Gerrit Crafford, Fanie Buys
Dr Ruben Ndihokubwayo
A comprehensive model based on priority project objectives aligned with monetary incentives, and agreed upon by built environment stakeholders was developed. A web survey was adopted to send out a questionnaire to nationwide participants, including contractors, quantity surveyors, project managers, architects, and consulting engineers, requesting them to base their responses on a specific construction project in which they have been involved. The development of the model consists of the combination of results from inferential statistics analyses of 7-point Likert scale questions in three aspects, namely motivational factors (Mann-Whitney and Kruskal-Wallis), monetary incentives (T-test and ANOVA), and project objectives aligned with …