Digital Commons Network^™

Evaluation Of Shock Induced Spallation In Nanocrystalline Copper, Chase Philpot

Mechanical Engineering Undergraduate Honors Theses

This research uses atomistic simulations to examine the behavior of nanocrystalline Cu under impact at ballistic speeds. The advantage of using atomistic simulations to study shock induced deformation is that a real-time picture of the evolution of the microstructure can be attained, whereas experimentally this is not possible. Specifically, molecular dynamics simulations are used to build models of the material and run the simulations. Six cases are explored: Single crystal Cu loaded along the <100>, <110>, and <111> directions, and nanocrystalline samples with average grain diameters of 5, 10, and 15 nm. The target to flyer ratio is varied to generate …

Horizontal Rights And Chinese Constitutionalism: Judicialization Through Labor Disputes, Ernest Caldwell

Chicago-Kent Law Review

Western academics who criticize Chinese constitutionalism often focus on the inability of the Supreme People's Court to effectively enforce the rights of Chinese citizens enshrined within the Constitution of the People's Republic of China. Such criticism, I argue, is the result of analytical methods too invested in Anglo-American constitutional discourse. These approaches tend to focus only on those Chinese political issues that impede the institution of western-style judicial review mechanisms, and often construe a 'right' as merely having vertical effect (i.e., as individual rights held against the State). Drawing on recent scholarship that studies Chinese constitutionalism using its own categories …

Flow Kinematics And Dynamics Controlling Tracer Movement And Shallow-Water Wave Propagation In The Hudson River, Jindong Wang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Analyses of ship borne ADCP, salinity and dye tracer data from a 2002 experiment in a reach of the lower Hudson Estuary emphasize the influence of bottom topography on halocline position within the water column and dye tracer movement relative to isohalines. Halocline slope and halocline position within the water column during both flood and ebb and their relationship to bottom topography and bottom friction are described in terms of both the quasi-steady two-layer frictional hydraulics and tidally generated internal waves. Hindcast simulations using ROMS for the same reach provide detailed description of 3D velocity field and salinity field to …

Characterizations Of Defects In Bulk Sapphire, Yu Yang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Defects would effect the optical properties and operation performances of sapphire single crystal material. Further understanding the defects structure and origins in sapphire plays a crucial role. This study is focusing on analyzing the structure of linear, 2D and 3D defects using the X-ray topography technique. Several other techniques such as etch pits method and X-ray reticulography are also employed to revealing the properties of dislocations and stress distribution around certain defect feature. | 62 pages

Interactive Software Systems For Planar Parallel Manipulator- And Spherical Four-Bar Linkage- Design, Kartik Thakkar

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Dimensional Synthesis is of crucial importance in robotics for trajectory planning, task specication in Mechanism Synthesis,CNC tool path planning as well as in micro and nano systems, where kinematics plays an important role. This thesis presents an interactive software for the dimensional synthesis of planar parallel manipulators (PPMs) and spherical four bar motion approximation from a given set of displacements. For PPMs, a user friendly and interactive graphical software has been developed for the synthesis using C++,OpenGL and Qt. The software is designed and implemented using an Object Oriented Programming (OOP) architecture. This architecture naturally maps mathematical formulation of the …

Conflicts, Riots, And Korean Americans In Los Angeles, 1965-1992, Chanhaeng Lee

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Facing numerous disadvantages in the U.S. labor market, Koreans immigrating in the wake of the 1965 Immigration and Nationality Act found few options but to run small businesses. Lower start-up costs brought them to low-income, inner-city communities, which were increasingly Black and Brown as state investment dwindled and Whites fled to the suburbs. Structural economic and historical social conditions gave rise to conflicts, especially with Black customers. In Los Angeles, Black-Korean tensions reached a peak in late April 1992, when more than two thousand Korean-owned stores were burned and/or looted. This project explores the ways in which Korean immigrants navigated …

Exploring Advanced Communication Primitives Using Greedy Routing In Sensor Networks And Other Complex Networks, Xiaomeng Ban

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Scalable point-to-point routing on a wireless sensor network has been an active research topic for the past ten years. The major challenge comes from the fundamental resource limitation of sensor nodes, in terms of storage size and communication bandwidth. The solution that requires a node to acquire the entire network topology does not scale well. In the past few years there have been a number of innovative proposals on scalable routing schemes where each node only keeps local information and a routing path can be discovered by iteratively applying greedy routing decisions. Such work has mainly focused on issues such …

Understanding Carbohydrate Recognition By Antiviral Lectins: Applying Computational Methods To Protein-Carbohydrate Complexes, Yukiji Karen Fujimoto

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Human immunodeficiency virus (HIV) infection of T-cells begins when the viral envelope glycoprotein, gp120, binds to CD4 receptors on the target cell surface. Over the past several years, proteins isolated from various prokaryotes have been shown to inhibit HIV cell entry by binding to gp120 and thus blocking the association with CD4. Lectins that bind to high-mannose oligosaccharides on gp120 are an attractive class of antiviral agents. While several of these have been quite well characterized both structurally and biochemically, there remain many open questions regarding their mechanism of inhibition. Among the best studied is cyanovirin-N (CVN), which is currently …

What, After All, Are All Things -- But A Show?: Byron And The Legacy Of Literary Celebrity, Kathrine Elaheh Hedayat

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

This article follows the ascension of Lord Byron, widely regarded as the first living literary celebrity. The process by which this status was constructed shall be documented and analyzed, as well as Byron's cultural legacy. The practices of fan culture during the nineteenth century in response to Byron are analyzed alongside contemporary fan practices. The phenomenon of Byromania and the Byronic are examined alongside the evolution of literary celebrity into its modern form, tracing back to Byron's initial efforts. | 40 pages

Understanding The Effects Of Multivalent Glycopolymer Structure On Molecular Recognition, Eunjung Lee

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Carbohydrate-protein interactions are involved in a large number of important physiological and pathological processes. The weak binding affinity of a monovalent carbohydrate is compensated by multivalency in which multimeric recognition elements interact with a cell surface display of two or more receptors. In order to study lectin-carbohydrate interactions and find analytical and diagnostic applications, a large number of synthetic glycoconjugates have been investigated in the last decade. In order to explore the effects of structural features of glycopolymers on the binding events, a series of polymers were synthesized. Multivalent ligands with pendant saccharide moieties were prepared from two different types …

Benchmarks 2012, December 14, The Rockefeller University

BenchMarks 2012

BenchMarks. Friday, December 14, 2012

The community newsletter of The Rockefeller University

BenchMarks is published monthly and is distributed on the campus of The Rockefeller University. It produced by the Office of Communications and Public Affairs

Number 16, 2012, Palara Editors

PALARA: Publication of the Afro-Latin/American Research Association

Complete Issue

Syntheses, Characterization, And Applications Of Injectable Citrate-Based Mussel-Inspired Biodegradable Adhesive (Icmba) Polymers And Hydrogels, Mohammadreza Mehdizadeh

Material Science and Engineering Dissertations - Archive

Tissue adhesives are increasingly gaining more popularity in various areas of biomedical applications. They are utilized as surgical adhesives, as a replacement or adjunct to conventional wound closure and bleeding control techniques such as suturing, as well as in other applications such as tissue engineering and drug delivery.Unfortunately, the existing surgical adhesives are not ideal for wet tissue adhesion required in many surgeries such as those for internal organs. Developing surgical adhesives with strong wet tissue adhesion, controlled degradability and mechanical properties, and excellent biocompatibility has been a significant challenge. Herein, learning from nature, we report a one-step synthesis of …

Acknowledgements, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Predictive Relationships Of Teacher Efficacy, Geometry Knowledge For Teaching, And The Cognitive Levels Of Teacher Practice On Student Achievement., Paul Klein

Electronic Theses and Dissertations

This study explored the predictive relationships of teacher efficacy, teacher knowledge, and teacher practices with student achievement. More specifically, secondary mathematics teachers' efficacy beliefs, geometry knowledge for teaching, and the cognitive complexity of the teachers' classroom practices were examined for 72 teachers in both urban and rural districts across Kentucky, along with the student achievement data of their students. Teacher and student data were obtained from the NSF-funded Geometry Assessment for Secondary Teachers (GAST) project, which administered geometry teacher knowledge assessments at the beginning and end of the school year, and collected cognitive complexity data from lessons through three classroom …

Phenomenological Modeling Of Image Irradiance For Non-Lambertian Surfaces Under Natural Illumination., Shireen Y. Elhabian

Electronic Theses and Dissertations

Various vision tasks are usually confronted by appearance variations due to changes of illumination. For instance, in a recognition system, it has been shown that the variability in human face appearance is owed to changes to lighting conditions rather than person's identity. Theoretically, due to the arbitrariness of the lighting function, the space of all possible images of a fixed-pose object under all possible illumination conditions is infinite dimensional. Nonetheless, it has been proven that the set of images of a convex Lambertian surface under distant illumination lies near a low dimensional linear subspace. This result was also extended to …

Knockout Of The 15 Kda Selenoprotein Protects Against Chemically-Induced Aberrant Crypt Formation In Mice, Petra A. Tsuji, Bradley A. Carlson, Salvador Naranjo-Suarez, Min-Hyuk Yoo, Xue-Ming Xu, Dmitri E. Fomenko, Vadim Gladyshev, Dolph L. Hatfield, Cindy D. Davis

Department of Biochemistry: Faculty Publications

Evidence suggests that selenium has cancer preventive properties that are largely mediated through selenoproteins. Our previous observations demonstrated that targeted down-regulation of the 15 kDa selenoprotein (Sep15) in murine colon cancer cells resulted in the reversal of the cancer phenotype. The present study investigated the effect of Sep15 knockout in mice using a chemically-induced colon cancer model. Homozygous Sep15 knockout mice, and wild type littermate controls were given four weekly subcutaneous injections of azoxymethane (10 mg/kg). Sep15 knockout mice developed significantly (pGBP-1 in humans has been associated with a highly significant, increased five-year survival rate in colorectal cancer patients. In …

Gardner-Webb, The Magazine 2012, Fall (Volume 47 No. 3), Noel T. Manning Ii

Gardner-Webb, The Magazine

Gardner-Webb, The Magazine, previously titled The Webb Magazine, focuses on alumni news and campus events from Gardner-Webb College; now Gardner-Webb University. This particular issue focuses heavily on the relationship between GWU and medicine. Article topics range from being about the new Exercise Science Major to honoring medical legacies in Boiling Springs, such as Gene Washburn. In between are articles featuring Gardner-Webb alumni and current students alike and how they are becoming involved in the medical world. The opening of the Tucker Student Center is featured along with sports updates and praise for a new enrollment record.

Design And Construction Of A Tunable Light Source With Light Emitting Diodes For Photosynthetic Organisms, Nathan Phillipps

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis describes and documents the design and construction of a light source which is tunable and has the ability to mimic the spectral output of the sun in the photosynthetic active radiation range (400 - 700 nm). To adjust the spectral output at different wavelengths different types of LEDs were chosen and combined. This thesis describes the design, construction, testing, and suggestions for further improvements to this light source. The light source is comprised of 900 LEDs with 26 different peak wavelengths within the photosynthetically active radiation range. The light source is made tunable through the use of a …

Transportation Network Resiliency: A Study Of Self-Annealing, Sunil Babu Pant

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Disasters have the potential to hit any geographical location with or without warning. As such, it is desirable that transportation networks are able to withstand the adverse effect of disasters and maintain the normal functioning of all sectors of society. Resilient transportation networks are least affected by disruptions created by natural and manmade disasters and are still able function with an acceptable level of service. Such networks also have ability to return earlier from disrupted state to the normal functioning state. Resilience possessed by a transportation network measures the ability of networks to maintain functionality despite adverse conditions posed by …

A Study Of Utah’S New Century Scholarship (Ncs) Program, Christine Kearl

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This was a study about the New Century Scholarship (NCS) program offered to Utah high school students at commencement for earning an AA degree by the time of high school graduation. The scholarship paid 75% of the remaining 2 years of tuition over a 5-year period. The goal of the program was to assist students to bachelor degree completion faster than the traditional time.

This program has been in Utah for the past 20 years, but little to no information about the program exists. Annually, the cost to taxpayers is approximately $2 million dollars. This study was conducted to determine …

Application Of Response Surface Methodology And Central Composite Design For 5p12-Rantes Expression In The Pichia Pastoris System, Frank M. Fabian

Department of Chemical and Biomolecular Engineering: Dissertations, Theses, and Student Research

Pichia pastoris has demonstrated the ability to express high levels of recombinant heterologous proteins. Protein expression is enhanced during fermentation at high cell density. However, the level of expression is mainly regulated by fermentation operation factors. This research is directed to investigate the effect of methanol growth rate, temperature and pH in the expression of the total 5P12-Rantes concentration, expression of active 5P12-Rantes and Specific yield using the response surface methodology and central composite design.

The response surface methodology, RSM, has been used successfully used by Zhang, W. and Ian, M. to optimize the cell density and fermentation process. The …

The Effect Of Mortar Strength On The Standard Test For Strand Bond, Cameron Murray

Civil Engineering Undergraduate Honors Theses

The prestressed industry is moving towards adopting the Standard Test for Strand Bond (STSB) to quantify the bond capacity of prestressing strand. In the test, strand is pulled through an 18 in. cylindrical casing filled with mortar. The force corresponding to the dead end displacement of 0.1 in. is recorded and this value is used to quantify strand bond. One of the concerns of the test is the requirement of a mean mortar strength of 4,500 to 5,000 psi during testing. There is concern that this 500 psi range may be too difficult to achieve. A study was conducted to …

Aerospace Section, Barbara A. Williams

Sci-Tech News

No abstract provided.

Science-Technology Division, Cheryl A. Hansen, Sarah K. Oelker

Sci-Tech News

Sci-Tech Division news from the Chair. An overview of 2012.

Residential Speed Limit Reduction Case Studies, Ginger M. Rossy, Carlos C. Sun, Dan Jessen, Earl Newman

College of Natural and Applied Sciences

Speeding on residential/neighborhood streets is a common citizen complaint, but previous research on the effects of lowering speed limits has been limited mostly to high-volume, high-speed roads. On such facilities, studies indicated that a reduction in speed was not commonly attained by reducing the posted speed limits alone. This paper describes residential studies in the United States in Springfield and Columbia that found speed limit reductions from 30 mph (48 km/h) to 25 mph (40 km/h) did produce statistically significant speed decreases. In addition to the speed limit reduction, other issues investigated were the use of specialized speed limit signs …

Can Public Child Welfare Help To Prevent Child Maltreatment? Promising Findings From Los Angeles, Jacquelyn Mccroskey, Peter Pecora, Todd Franke, Christina Christie, Jaymie Lorthridge

Journal of Family Strengths

This article describes promising findings from the Los Angeles County Prevention Initiative Demonstration Project, a systems change approach to developing relationships between public child welfare, allied public agencies, and community-based networks that offer family-centered services, economic assistance and capacity building to support all kinds of families. It describes the conceptual underpinnings and unique structure of the initiative, the evaluation methods used to assess results, and a pattern of promising results.

The First Cosmic Ray Albedo Proton Map Of The Moon, Jody K. Wilson, Harlan E. Spence, Justin Kasper, Michael Golightly, J. B. Blake, J. E. Mazur, L. W. Townsend, A. W. Case, M. D. Looper, C. Zeitlin, Nathan A. Schwadron

Physics & Astronomy

[1] Neutrons emitted from the Moon are produced by the impact of galactic cosmic rays (GCRs) within the regolith. GCRs are high-energy particles capable of smashing atomic nuclei in the lunar regolith and producing a shower of energetic protons, neutrons and other subatomic particles. Secondary particles that are ejected out of the regolith become “albedo” particles. The neutron albedo has been used to study the hydrogen content of the lunar regolith, which motivates our study of albedo protons. In principle, the albedo protons should vary as a function of the input GCR source and possibly as a result of surface …

"Alien" Litigation As Polity-Participation: The Positive Power Of A "Voteless Class Of Litigants", Daniel Kanstroom

William & Mary Bill of Rights Journal

No abstract provided.

Development Of Novel Biodegradable And Multi-Functional Nanoparticles For Melanoma Treatment And Diagnostic, Khanh Vu

McNair Scholars Research Journal

No abstract provided.