Engineering Commons^™

Road Diet V2.0 - Road Diet With Roundabouts, Michael Williams

PSU Transportation Seminars

How can we go one step, or one lane, further than the standard road diet? Roundabouts allow a road diet to reduce the final number of lanes from three to two.

Questions arise when roundabouts are used with a road diet. What traffic volumes are supportable? Will the roundabouts fit within existing intersections? What does current guidance tell us about this approach?

Michael Williams will present his work on creating a sequel to FHWA’s Road Diet Informational Guide. This work is intended to provide a feasibility determination tool for the application of this approach to existing corridors. Data from Bird …

The Santa Clara, 2018-02-15, Santa Clara University

The Santa Clara

No abstract provided.

Development Trends In Intelligent Homes, I-Chen Chen, Jia-Shing Sheu, Husan-Wei Huang

Journal of Marine Science and Technology–Taiwan

Since the U.S. National Science and Technology Council began implementing its plans for the development of intelligent structures in 2004, the Taiwan Communications Industry Alliance has been committed to applying communication and monitoring technologies in the construction industry to develop a market for intelligent houses. Accordingly, in this paper, relevant studies from January 2000 to December 2016 were collected from the Web of Science database. A key-route main path analysis of the text and data as well as a growth analysis of the research clusters in this field were performed to determine the main research topics and development trajectories. The …

Classification Of Hydrodynamic Coefficients Of Autonomous Underwater Vehicles Based On Sensitivity Analyses In Standard Maneuvers, Mahnaz Abolvafaie, Hamid Reza Koofigar, Maryam Malekzadeh

Journal of Marine Science and Technology–Taiwan

Due to the important role of hydrodynamic coefficients in the control and guidance of an autonomous underwater vehicle (AUV), sensitivity analysis is proposed here, as a preliminary step to motion control design. Taking the standard maneuvers, including turning circle and horizontal and vertical zigzag, the sensitivity of various hydrodynamic coefficients with respect to velocities and position is determined. Such analyses are then used to classify the model parameters into three categories, as non-sensitive coefficients, coefficients with low influence on the motion and more sensitive coefficients.

Comparisons Of Position Control Of Valve-Controlled And Pump-Controlled Folding Machines, Ray-Hwa Wong, Wei-Heng Wong

Journal of Marine Science and Technology–Taiwan

Control units of electro-hydraulic double-axial folding machine can be classified as throttling type (valve-controlled) and volumetric type (pump-controlled). This paper focuses to compare their control performances. Valve-controlled folding machine (VCFM) has higher supply pressure, different circuit resistance between subsystems. Pump-controlled folding machine (PCFM) has variable working pressure and circuit resistance is slightly different. The folding machine is a coupled system and has significant structural interaction. This paper proposes coupled adaptive self-organizing sliding-mode fuzzy controllers to improve folding machine’s level control performance. It found higher supply pressure of VCFM cause faster transient response, larger maximum overshoot via a variety of coupled …

Free Vibration Analysis Of A Nonlinearly Tapered Beam Carrying Arbitrary Concentrated Elements By Using The Continuous-Mass Transfer Matrix Method, Ching-An Huang, Jong-Shyong Wu, Heiu-Jou Shaw

Journal of Marine Science and Technology–Taiwan

Although the exact solutions for the free vibration problems regarding most of the non-uniform beams are not yet obtainable, this is not true for the special case when the equation of motion of a non-uniform beam can be transformed into that of an equivalent uniform beam. The nonlinearly tapered beam studied in this paper is a single-tapered beam with constant depth h0 and varying width b(x) along its length in the form b x( )  4 0 b xL [1 ( )]  , where b0 is the minimum width,  is the taper constant, x is the axial …

Characterizing The Influence Of Matrix Ductility On Damage Phenomenology In Continuous Fiber-Reinforced Thermoplastic Laminates Undergoing Quasi-Static Indentation, A. Yudhanto, H. Wafai, G. Lubineau, R. Yaldiz, N. Verghese

Mechanical and Aerospace Engineering Faculty Research & Creative Works

The use of thermoplastic matrix was known to improve the impact properties of laminated composites. However, different ductility levels can exist in a single family of thermoplastic matrix, and this may consequently modify the damage phenomenology of thermoplastic composites. This paper focuses on the effect of matrix ductility on the out-of-plane properties of thermoplastic composites, which was studied through quasi-static indentation (QSI) test that may represent impact problem albeit the speed difference. We evaluated continuous glass-fiber reinforced polypropylene thermoplastic composites (GFPP), and selected homopolymer PP and copolymer PP that represent ductile and less ductile matrices, respectively. Several cross-ply laminates were …

Wetting Properties Of Structured Interfaces Composed Of Surface-Attached Spherical Nanoparticles, Nikolai V. Priezjev, Bishal Bhattarai

Mechanical and Materials Engineering Faculty Publications

The influence of the external pressure and surface energy on the wetting transition at nanotextured interfaces is studied using molecular dynamics and continuum simulations. The surface roughness of the composite interface is introduced via an array of spherical nanoparticles with controlled wettability. We find that in the absence of an external pressure, the liquid interface is flat and its location relative to the solid substrate is determined by the particle size and the local contact angle. With increasing pressure on the liquid film, the interface becomes more curved and the three-phase contact line is displaced along the spherical surface but …

An Approach To Aligning Regions Of Interest On Infrared Palm-Dorsum Images Captured In Contactless Scenarios, Chih-Lung Lin, Hui-Fen Chiang, Hsu-Yung Cheng, Chih-Wei Kuo, Jun-Wei Hsieh

Journal of Marine Science and Technology–Taiwan

This paper presents an approach for solving a highly challenging problem in the preprocessing of hand-based biometrics, namely restoring IR palm-dorsum images captured in contactless scenarios and aligning regions of interest (ROIs) in the same regions on the various restored infrared (IR) palm-dorsum images captured from the same palm-dorsum. IR palm-dorsum images captured in contactless scenarios substantially increase the user-friendliness, security and sanitation of hand-based biometrics. However, images captured in contactless scenarios typically exhibit rotation, translation, scale and shear geometric transformations. These geometric transformations significantly reduce the accuracy of hand-based biometrics. An approach used to restore and align ROI on …

Molecular Simulation Of Steady-State Evaporation And Condensation In The Presence Of A Non-Condensable Gas, Zhi Liang, Pawel Keblinski

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Using Molecular Dynamics Simulations, We Study Evaporation and Condensation of Fluid Ar in the Presence of a Non-Condensable Ne Gas in a Nanochannel. the Evaporation and Condensation Are Driven by the Temperature Difference, ΔTL, between the Evaporating and Condensing Liquid Surfaces. the Steady-State Evaporation and Condensation Fluxes (JMD) Are Also Affected by the Ne Concentration, ΡNe, and the Nanochannel Length. We Find that Across a Wide Range of ΔTL and ΡNe, JMD is in Good Agreement with the Prediction from Stefan's Law and from Schrage Relationships. Furthermore, for ΔTL Less Than ∼20% of the Absolute Average Temperature, We Find that …

Two-Stage Concrete As A Sustainable Production, Hakim Salem Abdelgader, Ali Said Ahmed El-Baden, H. A. Abdurrahman, A. S.M. Abdul Awal

Mechanical and Civil Engineering Faculty Publications

Two-stage concrete (TSC) is a sustainable concrete which is produced by forcing a flowable cement grout mixture through the voids of a skeletal mass made of compacted preplaced aggregates. From the technical and economic aspects, TSC is particularly useful for construction and repair of concrete structures especially foundations, underwater construction, nuclear reactors, concrete dams, heritage structures and in constructions with closely spaced reinforcement. TSC differs from ordinary concrete in that it contains a higher proportion of stone aggregate and the aggregate stays in point-to-point contact as placed. Thus, the mechanical characteristics of the TSC in failure conditions are distinctly different …

Electrical & Computer Engineering News, Georgia Southern University

Electrical & Computer Engineering: News & Publications (2014-2023)

• Dr. Masoud Davari, Electrical and Computer Engineering Assistant Professor in the area of Power, Presents in Research Colloquium

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• Masoud Davari participates in ECE Research Colloquium
• Record numbers of students on Dean’s and President’s Lists

Improving Resource Allocation And Power Fairness In Emerging Mobile Cellular Network Technologies, Bilal Al-Doori

Theses and Dissertations

This new millennium has been regarded as the era of the digital wireless communications revolution. With the intention of meeting the demands of the current customers’ services and bridging to the future digital network, namely 5G network, the duty of the radio resource management (RRM) to quantify different altitudes should be carried out in an effective mechanism for avoiding any potential waste of resources, power, and processing time. Therefore, this research intends to study and investigate the resource management for downlink radio access network in LTE-A and 5G systems. Furthermore, the packet scheduling, minimizing power, and guaranteeing suitable fairness of …

Bathymetry Data For Lakes Azuei And Enriquillo, Michael Piasecki, Mahrokh Moknatian

Publications and Research

This data set supports and forms the basis for the development of Digital Bathymetry Models (DBM) for Lakes Azuei (Haiti) and Enriquillo (Dominican Republic). Bathymetric Data is typically acquired using Sonar devices that measure the depth at specific points along a boat track and for which the longitude and latitude is recorded. From the resulting point cloud one develop a seamless representation of the floor of the lake on either a raster set (which is what we have done) or try to use a contour (vector representation) model in which the depth contours appear as polygons or -lines. The raw …

Research On An Electric Vehicle Owner-Friendly Charging Strategy Using Photovoltaic Generation At Office Sites In Major Chinese Cities, Su Su, Yong Hu, Tiantian Yang, Shidan Wang, Ziqi Liu, Xiangxiang Wei, Koji Yamashita, Et Al.

Michigan Tech Publications, Part 1

Electric vehicles (EV) and photovoltaic (PV) generation are widely recognized around the world. Most EV owners in the major Chinese cities are forced to charge their EV batteries at the workplace during the daytime due to the limited space near their homes, which will increase the peak load during the daytime. On the other hand, the PV output is most likely to have a peak at around noon, which means, PVs could have a potential capability to compensate the EV charging load. An EV owner-friendly charging strategy based on PV utilization which alleviates both the EV charging constraints and the …

Advanced Pavement Materials For Sustainable Transportation Infrastructure, Zhanping You, Meor O. Hamzah, Hainian Wang, Aboelkasim Diab, Qingli Dai

Michigan Tech Publications, Part 1

Many road managers and stakeholders are looking for more and better options for the construction and maintenance of flexible and rigid pavements. Well-designed strategies for pavement construction and maintenance have attracted the interests of researchers since a large number of existing pavements are facing deterioration all over the world. The selection and engineering properties of paving materials are crucial factors affecting the durability and therefore demanding standards of sustainability of the constructed pavement. Researchers worldwide are putting extensive efforts to develop and promote advanced pavement materials and structures for constructing and maintaining sustainable pavements. Pavement materials that can improve durability, …

Xps Studies Of Lscf Interfaces Afer Cell Testing, Gianfranco Digiuseppe, Venkatesh Boddapati, Hiten Mothikhana

Mechanical Engineering Publications

The motivation of this investigation is to explore the possibility of using the depth profile capability of XPS to study interfaces after SOFC button cell testing. The literature uses XPS to study various cathode materials but has devoted little to the understanding of various cathode interfaces especially after testing. In this work, an SOFC button cell is first tested, and then, the LSCF cathode, barrier layer, and electrolyte are sputtered away to study the behavior of different interfaces. This work has shown that some elements have moved into other layers of the SOFC cell. It is argued that the migration …

Aerial Imagery Gives Insight Into Water Trends | College Of Engineering, Usu College Of Engineering

College of Engineering News

With an ever-growing human population and its inherent demand for water, there is a critical need to monitor water resources.

Usu Students Present At 41st Annual Astronautical Conference, Usu College Of Engineering

College of Engineering News

Five engineering students from Utah State University attended the 41st Annual AAS Guidance, Navigation and Control Conference in Breckenridge, Colo.

Mechanical Properties And Flame Retardancy Of Surface Modified Magnesium Oxysulfate (5mg(Oh)2·Mgso4·3h2o) Whisker For Polypropylene Composites, Eui-Su Kim, Ye Chan Kim, Jungwoo Park, Youngjun Kim, Sung-Hoon Kim, Kwang Jin Kim, Jonghwan Suhr, Youngkwan Lee, Seong Hoon Lee, Dae-Sik Kim, Soo-Hyun Kim, Ju-Ho Yun, In-Kyung Park, Jae-Do Nam

Mechanical Engineering Faculty Research

Magnesium oxysulfate (MOS) whisker is considered as a promising inorganic material recently attracting a great attention for being used as a reinforcing filler for polymer composites due to high aspect ratio and extremely-low bulk density. In this study, the MOS was treated with 3-methacryloyloxypropyl-trimethoxy silane (MPS) via sol-gel condensation reactions, which successfully allowed melt mixing with polypropylene (PP) up to 30 wt% of MOS. The tensile strength at yield and modulus of the MOS/PP composites were substantially increased by 50.8% and 362%, respectively, when compared with the pristine PP. As a novel finding, the flame retardancy of MOS was proved …

The Santa Clara, 2018-02-08, Santa Clara University

The Santa Clara

No abstract provided.

Muscle Activity During Maximal Isometric Forearm Rotation Using A Power Grip, Joseph Scott Bader, Michael R. Boland, Desney Greybe, Arthur J. Nitz, Timothy L. Uhl, David A. Pienkowski

Biomedical Engineering Faculty Publications

This study aimed to provide quantitative activation data for muscles of the forearm during pronation and supination while using a power grip. Electromyographic data was collected from 15 forearm muscles in 11 subjects while they performed maximal isometric pronating and supinating efforts in nine positions of forearm rotation. Biceps brachii was the only muscle with substantial activation in only one effort direction. It was significantly more active when supinating (µ = 52.1%, SD = 17.5%) than pronating (µ = 5.1%, SD = 4.8%, p < .001). All other muscles showed considerable muscle activity during both pronation and supination. Brachioradialis, flexor carpi radialis, palmaris longus, pronator quadratus and pronator teres were significantly more active when pronating the forearm. Abductor pollicis longus and biceps brachii were significantly more active when supinating. This data highlights the importance of including muscles additional to the primary forearm rotators in a biomechanical analysis of forearm rotation. Doing so will further our understanding of forearm function and lead to the improved treatment of forearm fractures, trauma-induced muscle dysfunction and joint replacements.

A Localized Meshless Technique For Generating 3-D Wind Fields, Darrell W. Pepper, Maria Ramos Gonzalez

Mechanical Engineering Faculty Research

A localized meshless method is used to simulate 3-D atmospheric wind fields for wind energy assessment and emergency response. The meshless (or mesh-free) method with radial basis functions (RBFs) alleviates the need to create a mesh required by finite difference, finite volume, and finite element methods. The method produces a fast solution that converges with high accuracy, establishing 3-D wind estimates over complex terrain. The method does not require discretization of the domain or boundary and removes the need for domain integration. The meshless method converges exponentially for smooth boundary shapes and boundary data, and is insensitive to dimensional constraints. …

Direct Numerical Simulation Of Transverse Ripples: 1. Pattern Initiation And Bedform Interactions, ‪Nadim Zgheib, J. J. Fedele, D. C. J. D. Hoyal, M. M. Perillo, S. Balachandar

Mechanical Engineering Faculty Publications

We present results of coupled direct numerical simulations between flow and a deformable bed in a horizontally periodic, turbulent open channel at a shear Reynolds number of Reτ = 180. The feedback between the temporally and spatially evolving bed and the flow is enforced via the immersed boundary method. Using the near-bed flow field, we provide evidence on the role of locally intense near-bed vortical structures during the early stages of bed formation, from the emergence of quasi-streamwise streaks to the formation of incipient bedform crestlines. Additionally, we take a new look at a number of defect-related bedform interactions, …

Direct Numerical Simulation Of Transverse Ripples: 2. Self-Similarity, Bedform Coarsening, And Effect Of Neighboring Structures, ‪Nadim Zgheib, J. J. Fedele, D. C. J. D. Hoyal, M. M. Perillo, S. Balachandar

Mechanical Engineering Faculty Publications

Coupled bed-flow direct numerical simulations investigating the early stages of pattern formation and bedform (ripple) interactions were examined in a previous paper (Part 1), making use of the resolved flow field. In this paper (Part 2), we compare our results to published experimental data and provide an extensive quantitative analysis of the bed using spectral analysis and two-point correlations. The effect of the mobile rippled bed on the flow structure and turbulence is investigated locally (at specific streamwise locations) and over the entire computational domain. We show that developing ripples attain a self-similar profile in both the shape and the …

Effect Of Knit And Print Parameters On Peel Strength Of Hybrid 3-D Printed Textiles, Ayushi Narula, Christopher M. Pastore, David Schmelzeisen, Sara El Basri, Jan Schenk, Subin Shajoo

Kanbar College Faculty Papers

The influence of knit fabric structure on the adhesion of three-dimensional (3-D) printed textiles was examined. 3-Dprinting was applied to different elastic knitted fabrics with different amounts of prestretch, typical for 4-D fabric construction. The quality of the bond was measured in terms of peel strength. Peel strength was measured by pulling the fabric at 180 degrees from the printed plastic to delaminate the 2 and recording the 10 highest peak values observed during the test. The printed width, the ratio of fabric width of print width, fabric washing, and fabric structure were varied. The specimens were then evaluated for …

Supramolecular Aptamer Nano-Constructs For Receptor-Mediated Targeting And Light-Triggered Release Of Chemotherapeutics Into Cancer Cells, Deepak K. Prusty, Volker Adam, Reza M. Zadegan, Stephan Irsen, Michael Famulok

Materials Science and Engineering Faculty Publications and Presentations

Platforms for targeted drug-delivery must simultaneously exhibit serum stability, efficient directed cell internalization, and triggered drug release. Here, using lipid-mediated self-assembly of aptamers, we combine multiple structural motifs into a single nanoconstruct that targets hepatocyte growth factor receptor (cMet). The nanocarrier consists of lipidated versions of a cMet-binding aptamer and a separate lipidated GC-rich DNA hairpin motif loaded with intercalated doxorubicin. Multiple 2′,6′-dimethylazobenzene moieties are incorporated into the doxorubicin-binding motif to trigger the release of the chemotherapeutics by photoisomerization. The lipidated DNA scaffolds self-assemble into spherical hybrid-nanoconstructs that specifically bind cMet. The combined features of the nanocarriers increase serum nuclease …

Analysis Of Cross-Cultural Training Provided To United States Air Force Civil Engineer Officers, And How Engineering Efforts Are Affected On Overseas Air Force Installations: A Delphi Study, Bianca E. Boney

Theses and Dissertations

U.S. military personnel perform a wide array of roles and missions at locations all over the world. As such, this research investigates and describes the current process of cultural training, its adequacy, and examines how cultural differences and collaboration efforts may impede or enhance project management and engineering efforts. This qualitative analysis is conducted through a Delphi study of U.S. Air Force officers consisting of 15 subject matter experts (SMEs) with experiences from 13 different countries. All reported to have daily to weekly interactions with locals and foreign partners due to job requirements; however, no set standard of cultural training …

Exploring Technology Forecasting And Its Implications For Strategic Technology Planning, Yonghee Cho

Dissertations and Theses

As the importance of R&D has been growing in economic growth, the accountability and effectiveness of R&D programs are highly emphasized. Especially, in times of economic downturn, the evaluation of performance in a firm is needed to justify R&D investment. In response, various attempts have been made to improve success rates of R&D projects, gain competitive advantage, and achieve a firm's growth in profitability. In particular, in industries where technological innovation is significant, strategic technology planning and R&D capabilities may be the lead ones in defining the dynamic capabilities of a firm. In addition, technology forecasting (TF) in technology planning …