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154,651 full-text articles. Page 5 of 4541.

Space And Defense – Volume Four – Number One – Winter 2010, Space and Defense Journal 2020 University of Nebraska at Omaha

Space And Defense – Volume Four – Number One – Winter 2010, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Three – Number Two – Fall 2009, Space and Defense Journal 2020 University of Nebraska at Omaha

Space And Defense – Volume Three – Number Two – Fall 2009, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Three – Number One – Summer 2009, Space and Defense Journal 2020 University of Nebraska at Omaha

Space And Defense – Volume Three – Number One – Summer 2009, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Two – Number Three – Winter 2009, Space and Defense Journal 2020 University of Nebraska at Omaha

Space And Defense – Volume Two – Number Three – Winter 2009, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Two – Number Two – Winter 2008, Space and Defense Journal 2020 University of Nebraska at Omaha

Space And Defense – Volume Two – Number Two – Winter 2008, Space And Defense Journal

Space and Defense

No abstract provided.


Space And Defense – Volume Two – Number One – Winter 2008, Space and Defense Journal 2020 University of Nebraska at Omaha

Space And Defense – Volume Two – Number One – Winter 2008, Space And Defense Journal

Space and Defense

No abstract provided.


Investigation Of Tracer-Surfactant-Foam Processes In Shallow Subsurface Environmental Remediation: History-Matching And Performance Prediction, Hazem Fleifel 2020 Louisiana State University and Agricultural and Mechanical College

Investigation Of Tracer-Surfactant-Foam Processes In Shallow Subsurface Environmental Remediation: History-Matching And Performance Prediction, Hazem Fleifel

LSU Master's Theses

In-situ subsurface remediation has been widely used as an efficient means of cleaning up non-aqueous phase liquid (NAPL) from contaminated soils and aquifer. The use of tracer, surfactant, and foam are often considered to keep track of the propagation of injected fluids in the medium, dissolve and mobilize contaminants trapped by capillary forces, and overcome the level of heterogeneity and improve displacement and sweep efficiencies.

This study shows an actual remediation process to reduce NAPL within a military base in South Korea, by injecting tracer and surfactant solutions together for a duration of 10 days. The site consists of 5 ...


Molecular Design Of Organic Semiconductors For Interfacial And Emissive Material Applications, Marcus David Cole 2020 University of Massachusetts Amherst

Molecular Design Of Organic Semiconductors For Interfacial And Emissive Material Applications, Marcus David Cole

Doctoral Dissertations

This dissertation describes the synthesis and characterization of functional optoelectronically active materials. Synthetic techniques were used to prepare polymers containing perylene diimide (PDI) or tetraphenylethylene (TPE) moieties in the polymer backbone. PDI-based structures were prepared with embedded cationic or zwitterionic moieties intended to tailor organic/inorganic interfaces in thin film photovoltaic devices. The aggregation-induced emission (AIE)-active TPE polymers were synthesized to study how AIE properties evolve in π-conjugated polymers. The syntheses discussed here focused on modulation of molecular architecture to give rise to materials with tailored optoelectronic properties.

Chapter 1 provides a brief overview of the field of organic ...


Bandwidth Bounds Of Infinite Planar Array Elements, Hsieh-Chi Chang 2020 University of Massachusetts Amherst

Bandwidth Bounds Of Infinite Planar Array Elements, Hsieh-Chi Chang

Doctoral Dissertations

For elements of an infinite planar phased array in free space and an infinite conductor-backed free standing planar phased array, fundamental bandwidth bounds are derived from the optical theorem for periodic scatterers. The bounds are based on Gustafsson’s theory of fundamental bandwidth limits for electrically small antennas of arbitrary shape, but extended to periodic configurations. The element bandwidth bound is found to be a function of the strengths of the induced static dipole moments in constant background fields as well as the unit-cell dimensions and the scan angle. Explicit bandwidth bound expressions are found for narrowband and ultrawideband array ...


Qoe-Aware Content Distribution Systems For Adaptive Bitrate Video Streaming, Divyashri Bhat 2020 University of Massachusetts - Amherst

Qoe-Aware Content Distribution Systems For Adaptive Bitrate Video Streaming, Divyashri Bhat

Doctoral Dissertations

A prodigious increase in video streaming content along with a simultaneous rise in end system capabilities has led to the proliferation of adaptive bit rate video streaming users in the Internet. Today, video streaming services range from Video-on-Demand services like traditional IP TV to more recent technologies such as immersive 3D experiences for live sports events. In order to meet the demands of these services, the multimedia and networking research community continues to strive toward efficiently delivering high quality content across the Internet while also trying to minimize content storage and delivery costs.

The introduction of flexible and adaptable technologies ...


Space And Defense – Volume One – Number One – Fall 2006, Space and Defense Journal 2020 University of Nebraska at Omaha

Space And Defense – Volume One – Number One – Fall 2006, Space And Defense Journal

Space and Defense

No abstract provided.


Barriers And Facilitators Influencing Compliance With Enhanced Recovery After Surgery Protocol: A Qualitative Study, Paige Boudreaux 2020 Louisiana State University

Barriers And Facilitators Influencing Compliance With Enhanced Recovery After Surgery Protocol: A Qualitative Study, Paige Boudreaux

LSU Master's Theses

Standardization in many industries has proven to lead to improved productivity and efficiency, however, standard practice in healthcare has proven difficult due to patient and physician variation. Evidence-based practices provide an opportunity to create more standardization. Enhanced Recovery After Surgery (ERAS) programs are attempting to standardize the surgical pathways of patients by implementing standard evidence-based steps, beginning in the surgeons office and continuing through a patients discharge (Ljungqvist, Scott, & Fearon, 2017). Implementing ERAS to standardize the surgical care of patients has shown to improve patient outcomes, reduce length of stay and reduce readmissions, however, there is a lack of studies ...


Solar Energy Development And Social Sustainability: A Case Study On The Teknaf Solar Power Plant In Bangladesh, Zafrin Ahmed Liza, Hajera Aktar, Mohammad Rakibul Islam 2020 Shahjalal University of Science and Technology

Solar Energy Development And Social Sustainability: A Case Study On The Teknaf Solar Power Plant In Bangladesh, Zafrin Ahmed Liza, Hajera Aktar, Mohammad Rakibul Islam

Journal of Asian Energy Studies

Due to Bangladesh’s rapid development and fast-growing economy, the Government has placed an emphasis on ensuring a reliable and quality supply of electricity, to permit sustainable and financial development. The state’s policy on private sector involvement and the release of marginal lands for energy plantations is intended to enhance access to energy, through diversifying the energy supply. The country’s first solar park, with a capacity of 28 megawatts (MW), was established on 116 acres of land in Knila, Teknaf of Cox’s Bazar. This facility started producing electricity in September 2018, which is currently being added to ...


Ac And Dc Differential Bridge Structure Suitable For Electrochemical Interfacial Capacitance Biosensing Applications, Sara Neshani, Charles K. A. Nyamekye, Scott Melvin, Emily A. Smith, Degang J. Chen, Nathan Neihart 2020 Iowa State University

Ac And Dc Differential Bridge Structure Suitable For Electrochemical Interfacial Capacitance Biosensing Applications, Sara Neshani, Charles K. A. Nyamekye, Scott Melvin, Emily A. Smith, Degang J. Chen, Nathan Neihart

Electrical and Computer Engineering Publications

This paper presents a capacitive differential bridge structure with both AC and DC excitation and balancing capability for low cost electrode-solution interfacial capacitance biosensing applications. The proposed series RC balancing structure offers higher sensitivity, lower susceptibility to common-mode interferences, and drift control. To evaluate the bridge performance in practice, possible effects of initial bridge imbalance due to component mismatches are investigated considering the required resolution of the balancing networks, sensitivity, and linearity. This evaluation is also a guideline to designing the balancing networks, balancing algorithm and the proceeding readout interface circuitry. The proposed series RC bridge structure is implemented along ...


How Data Became Part Of New Orleans’ Dna During The Katrina Recovery, Lamar Gardere, Allison Plyer, Denice Ross 2020 The Data Center of Southeast Louisiana

How Data Became Part Of New Orleans’ Dna During The Katrina Recovery, Lamar Gardere, Allison Plyer, Denice Ross

New England Journal of Public Policy

Data intermediaries have a symbiotic relationship with government as the source of most of their information. The open-data movement in government and development of software-as-a-service technologies shaped the data landscape after Katrina. Through relationships and talent transfers with The Data Center, the City of New Orleans went from having its chief technology officer in federal prison and its data systems in shambles to being a nationally recognized leader in open and accountable government. To be effective during disasters, an intermediary should be (1) in place and widely respected before the event, (2) ready to respond immediately after the event and ...


Proper Orthogonal Decomposition And Recurrence Map For The Identification Of Spatial–Temporal Patterns In A Low-Re Wake Downstream Of Two Cylinders, Meihua Zhang, Zhongquan Charlie Zheng, Huixuan Wu 2020 University of Kansas

Proper Orthogonal Decomposition And Recurrence Map For The Identification Of Spatial–Temporal Patterns In A Low-Re Wake Downstream Of Two Cylinders, Meihua Zhang, Zhongquan Charlie Zheng, Huixuan Wu

Mechanical and Aerospace Engineering Faculty Publications

Flow decomposition methods provide systematic ways to extract the flow modes, which can be regarded as the spatial distribution of a coherent structure. They have been successfully used in the study of wake, boundary layer, and mixing. However, real flow structures also possess complex temporal patterns that can hardly be captured using the spatial modes obtained in the decomposition. In order to analyze the temporal variation of coherent structures in a complex flow field, this paper studies the recurrence in phase space to identify the pattern and classify the evolution of the flow modes. The recurrence pattern depends on the ...


Lower Stiffness Orthopaedic Implants For Hemiarthroplasty, Carolyn Berkmortel 2020 The University of Western Ontario

Lower Stiffness Orthopaedic Implants For Hemiarthroplasty, Carolyn Berkmortel

Electronic Thesis and Dissertation Repository

One of the main drawbacks of hemiarthroplasty is that it involves the articulation of a foreign material against the native cartilage, and hence the native cartilage experiences accelerated wear. It is hypothesized that lowering the stiffness of hemiarthroplasty implants will decrease contact pressure and increase contact area, thus decrease wear. Lowering the stiffness was done using finite element analysis to lower the stiffness of the implant materials, and then to change the internal structure of the implants to increase their compliance. Structural changes produced no noticeable or favourable results, whereas material produced improved results for stiffnesses below a Young’s ...


A Shape Grammars Approach To Bvlgari’Semerald Necklaces Design Language, Youssef Elrafie, Samir S. Hosny, Mohamed Eladly, Sahar Morsy 2020 Future University in Egypt (FUE)

A Shape Grammars Approach To Bvlgari’Semerald Necklaces Design Language, Youssef Elrafie, Samir S. Hosny, Mohamed Eladly, Sahar Morsy

Future Engineering Journal

For more than forty years now, shape grammars have been the interest of many researchers in many domains including Paintings and Arts, Architecture, and Product Design [March, 2011]. However, by tracing the time line of shape grammars under “Product Design”, it does not show any interest in “Antiques or Vintages” as such [Chau et al. 2004]. This paper addresses shape grammars as a style generator of Bulgari’s emerald necklace designs, being considered as a vintage that bears a specific style, character and importance as a cultural symbol. The paper discusses the issue of style in design. Then it presents ...


Numerical Study Of Bolted Moment Connections In Cold-Formed Steel Frames, Mohamed El Aghoury, Essam Amoush, Mohamed Soliman 2020 Association of Arab Universities

Numerical Study Of Bolted Moment Connections In Cold-Formed Steel Frames, Mohamed El Aghoury, Essam Amoush, Mohamed Soliman

Future Engineering Journal

Bolted moment connections for cold-formed steel frames are considered very important and complicated items which need in depth studies. This paper studies the behaviour and strength of eave connections for members that consist of back to back cold-formed double channels in portal (right angle) steel frames. Relatively new configuration is suggested to facilitate the construction and reduce the cost of this type of connections. The connection is comprised of two stubs (welded built-up I shape) connected with two head plates, each stub is welded to its head plate, keeping in mind that the rafter stub is tapered I-shape. The web ...


Compressive Strength Of Axially Loaded Built-Up Sigma Cold Formed Sections Columns, Mohamed El Aghoury, Maged Tawfic, Essam Amoush 2020 Association of Arab Universities

Compressive Strength Of Axially Loaded Built-Up Sigma Cold Formed Sections Columns, Mohamed El Aghoury, Maged Tawfic, Essam Amoush

Future Engineering Journal

The use of cold formed steel sections in building constructions has lately seen rapid growth due to their light weight and easier erection. Generally, lipped channel sections are used more frequently .Sigma sections while requiring more effort in fabrication, they exhibit high strength to weight ratios compared with the lipped channel sections. This work presents experimental as well as numerical study of the strength of pinned-pinned axially loaded columns utilizing sigma sections. The column section consists of two back to back sigma cold formed sections. The two sections are connected through their webs with connecting fasteners. Eight specimens with variable ...


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