Digital Commons Network^™

Host–Guest Complexes Of Pentiptycene Receptors Display Edge-To-Face Interaction, Lorenzo Mosca, Petr Koutník, Vincent M. Lynch, Grigory V. Zyryanov, Nina A. Esipenko, Pavel Anzenbacher Jr.

Chemistry Faculty Publications

The pentiptycene receptors form edge-to-face complexes with a variety of aromatic guests including nitroaromatics. X-ray diffractometry revealed that compounds 1, 2, and 3 form host-guest assemblies with a thienyl fragment (from a neightboring molecule of 1), benzene and nitrobenzene, respectively. X-ray studies of the three crystal structures reported here strongly suggest the edge-to-face to be a predominant binding mode between the aromatic guests and electron-rich faces of the pentiptycene aromatic cavity.

Supramolecular Sensor For Cancer-Associated Nitrosamines, Tsuyoshi Minami, Nina A. Esipenko, Ben Zhang, Maria E. Kozelkova, Lyle Isaacs, Ryuhei Nishiyabu, Yuji Kubo, Pavel Anzenbacher Jr.

Chemistry Faculty Publications

A supramolecular assay based on two fluorescent cucurbit[n]uril probes enables the recognition and quantification of nitrosamines, including cancer-associated nitrosamines, compounds that are difficult to recognize. The cross-reactive sensor leverages weak interactions and competition among the probe, metal, and guest, yielding high information density in the signal output (variance) and enabling the recognition of structurally similar guests.

Collaborating To Improve Inquiry-Based Teaching In Elementary Science And Mathematics Methods Courses, Paula A. Magee, Ryan Flessner

Scholarship and Professional Work – Education

This study examines the effect of promoting inquiry-based teaching (IBT) through collaboration between a science methods course and mathematics methods course in an elementary teacher education program. During the collaboration, preservice elementary teacher (PST) candidates experienced 3 different types of inquiry as a way to foster increased understanding of inquiry based teaching (IBT). The experiences included a PST driven science inquiry and a mathematics inquiry where PSTs were learners and a science inquiry where PSTs were teachers. During and following the semester of the collaboration, data were collected to assess the impact of the inquiry experiences on the PSTs’ understanding …

Georgia's New Evidence Code: After The Celebration, A Serious Review Of Anticipated Subjects Of Litigation To Be Brought On By The New Legislation, Matthew E. Cook, K. Todd Butler

Mercer Law Review

As January 1, 2013 approaches, the Georgia Bar is anticipating the new Georgia Evidence Code (GEC), House Bill 24, due to take effect on that day. Several authors have canvassed the particular changes the GEC brings to the existing Georgia Rules, of Evidence, as well as the differences between the new GEC and the Federal Rules of Evidence (FRE). Those articles are commended for your reading, as they drive not only lawyers' courtroom presentation but also their trial preparation. Rather than rehashing the changes the GEC brings, this Article will address the abbreviated history preceding the passage of House Bill …

Exploring The Role Of Organic Matter Accumulation On Delta Evolution, Jorge Lorenzo-Trueba, Vaughan R. Voller, Chris Paola, Robert R. Twilley, Azure E. Bevington

Faculty Publications

[1] We explore the role of plant matter accumulation in the sediment column in determining the response of fluvial-deltas to base-level rise and simple subsidence profiles. Making the assumption that delta building processes operate to preserve the geometry of the delta plain, we model organic sedimentation in terms of the plant matter accumulation and accommodation (space made for sediment deposition) rates. A spatial integration of the organic sedimentation, added to the known river sediment input, leads to a model of delta evolution that estimates the fraction of organic sediments preserved in the delta. The model predicts that the maximum organic …

Analysis Of Crime Data Using Principal Component Analysis: A Case Study Of Katsina State, Shehu U. Gulumbe, Dikko H. .G., Bello Yusuf

CBN Journal of Applied Statistics (JAS)

This paper analyses Katsina State crime data which consists of the averages of eight major crimes reported to the police for the period 2006 – 2008. The crimes consist of robbery, auto theft, house and store breakings, theft/stealing, grievous hurt and wounding, murder, rape, and assault. Correlation analysis and principal component analysis (PCA) were employed to explain the correlation between the crimes and to determine the distribution of the crimes over the local government areas of the state. The result has shown a significant correlation between robbery, theft and vehicle theft. While MSW local government area has the lowest crime …

Inflation And Economic Growth In Nigeria: Detecting The Threshold Level, Sani I. Doguwa

CBN Journal of Applied Statistics (JAS)

This paper re-examines the issue of the existence and the level of inflation threshold in the relationship between inflation and growth in Nigeria, using three different approaches that provide appropriate procedures for estimating the threshold level and inference. While Sarel’s (1996) approach provides a threshold point estimate of 9.9 per cent that was not well identified by the data, the technique of Khan and Senhadji (2001) identifies a 10.5 per cent inflation threshold as statistically significant to explain the inflation-growth nexus in Nigeria. Also, the approach of Drukker et al (2005) suggests a two threshold point model with 11.2 and …

A Bijective Proof Of A Factorization Formula For Specialized Macdonald Polynomials, Nicholas A. Loehr, Elizabeth Niese

Mathematics Faculty Research

Let μ and ν = (ν 1, . . . , ν k ) be partitions such that μ is obtained from ν by adding m parts of sizer. Descouens and Morita proved algebraically that the modified Macdonald polynomials

H~μ(X;q,t)

satisfy the identity

H~μ=H~νH~(r^m)

when the parameter t is specialize to an mth root of unity. Descouens, Morita, and Numata proved this formula bijectively when r ≤ ν k and

r∈{1,2}.

This note gives a bijective proof of the formula for all r ≤ ν k .

Constrained Variational Analysis Integrating Vertical And Temporal Correlations, Jun Huang

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

Understanding climate change is an increasingly urgent issue of our society. Existing global climate models are less accurate particularly in predicting severe weather and abrupt climate change, which will invariably cause dramatic losses in life and property. One of the four major impediments identified by the National Research Council is the rudimentary, stationary and often unrealistic statistical methods/models employed in climate modeling. We endeavor to improve the stochastic modeling of atmospheric data by incorporating the spatial and temporal correlations with observations in the constrained variational analysis modeling (referred to CVA model hereinafter) approach pioneered by Zhang and Lin (1997) and …

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 …

Contemporary Manhattan Cartographies: Ephemeral Public Projects In New York, Andrew Wasserman

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

This dissertation considers the emergence of a cartographic public practice in both contemporary art and contemporary cities, attending to the ways in which ephemeral public projects create map-like objects that diverge from official urban projections. Rather than marking a single location, such projects structure networked connections between several sites, transforming undifferentiated urban spaces into legible urban places. Evaluation of this recent cartographic turn entails the triple consideration of placemaking, placemakers, and placemarkers as constructing spatialized identities for different neighborhoods and setting forth wayfinding strategies within these same neighborhoods. Focusing on Manhattan, the dissertation surveys how the borough has served as …

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 …

Conservative And Accurate Data Remapping For Coupling Climate Models (Wrf And Cam), Ying Chen

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

The two-way coupling of WRF and CAM for regional climate modeling requires transferring data (such as wind velocities, temperature, moisture, etc.) between the grids of WRF and CAM. These grids are in general non-matching, and the data transfer should be both physical conservative and numerically accurate. Our method contains two parts: constructing the common refinement and conservative data transfer using the common refinement. The former computes the cell intersections and provides the necessary data structures for the latter. We project the grids of WRF and CAM onto a plain surface using their corresponding map projection methods (such as: Lambert conformal …

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 …

Hyperkahler 4n-Manifolds With N Commuting Quaternionic Killing Fields, Joseph Malkoun

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

We consider a hyperk? hler 4n-manifold M. Using local holomorphic Darboux coordinates with respect to a compatible complex structure I on M, we find local necessary and sufficient conditions for a real smooth vector field X on M to be quaternionic Killing. We then apply this result to the case of a hyperk? hler manifold M admitting n commuting quaternionic Killing fields, X^1,... | X^n, the first n-1 of which are further assumed to be triholomorphic and quaternionically linearly independent pointwise. We then have two cases: if the self-dual part of DX^n vanishes, we get back the Hitchin-Karlhede-Lindstr??m-Roček result, and …

A Stochastic Segmentation Model For Categorical And Continuous Features Of Various Biological Sequential, Yifan Mo

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

Nowadays, Hidden Markov Model (HMM) has been widely used in analysis of various biological data for both smoothing and clustering. However, characterizing each hidden state by a single distribution, the classical HMM might have some limitations on the data whose hidden state is composed by a mixture of distributions (Heng Lian et al. | 2006). To address this issue, we proposed a new stochastic segmentation model and an associated estimation procedure that has attractive analytical and computational properties. We combined the forward and backward filter together based on Bayes' theorem to calculate the posterior mean and variance. Besides, we developed …

Winter 2012 E-Certi Newsletter, Center For Educational Research And Teaching Innovation

CAFE Faculty Newsletters

Hello S&T instructors: Another semester has rushed by at nano speed! Don’t forget to take a moment to enjoy what you have accomplished, as well as the accomplishments of some of your colleagues, which are highlighted in this issue. Also check out tips for handling interruptions and increasing class participation in discussion, as well as a feature on Dr. Martin Bohner.

Message From The Senior Vice Provost And Dean Of Undergraduate Studies, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Notes From The Director, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Acknowledgements, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Summer Vacation And The Achievement Gap: Do Summer Activities Differ By Students' Socioeconomic Status?, Ceola Brown

McNair Scholars Research Journal

No abstract provided.

Mr Imaging Of Left-Ventricular Function : Novel Image Acquisition And Analysis Techniques., Hui Wang

Electronic Theses and Dissertations

Many cardiac diseases, such as myocardial ischemia, secondary to coronary artery disease, may be identified and localized through the analysis of cardiac deformations. Early efforts for quantifying ventricular wall motion used surgical implantation and tracking of radiopaque markers with X-ray imaging in canine hearts [1]. Such techniques are invasive and affect the regional motion pattern of the ventricular wall during the marker tracking process and, clearly are not feasible clinically. Noninvasive imaging techniques are vital and have been widely applied to the clinic. MRI is a noninvasive imaging technique with the capability to monitor and assess the progression of cardiovascular …

Albert Taylor Bledsoe : Whig Intellectual And Proslavery Theorist., Lori Jean Wilson 1974-

Electronic Theses and Dissertations

This thesis explores the life and career of Albert Taylor Bledsoe, a conservative Whig intellectual and proslavery theorist. It seeks to understand an apparent contradiction in Bledsoe's public comments regarding slavery and secession. Bledsoe lived in a socially and politically dynamic world. His comments on slavery must be understood in the different political contexts in which they were made. This thesis explores those contexts and illuminates Bledsoe's desire to preserve social hierarchies and maintain public order, which Bledsoe believed necessary to secure liberty and equality among white men. The same concerns informed Bledsoe's shift toward secession. Bledsoe remained a Unionist …

Ecological Interactions Affecting The Role Of Mosquito Larvae On Dengue Virus Transmission., Jeffrey J. Bara 1984-

Electronic Theses and Dissertations

In the course of their life cycle, mosquitoes undergo an ontogenetic niche shift; immature larval development occurs within an aquatic habitat from which adult mosquitoes subsequently disperse into the terrestrial environment. While adult female mosquitoes transmit dengue to humans, the larval stage influences dengue virus transmission significantly in several ways. The biotic and abiotic conditions in which larvae develop influence epidemiologically important aspects of adult life history and influence the geographic distribution of mosquito species. Through vertical transmission, mosquitoes may serve as reservoir hosts for dengue during periods that are unfavorable for transmission to humans. For my dissertation, I conducted …

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 …

The Use Of Mathematical And Computational Models To Define The Role Of Mutation And Infection In Colorectal Cancer., Chandler D. Gatenbee 1982-

Electronic Theses and Dissertations

Research over the past twenty five years has led to the development of the hypothesis that colorectal cancer is caused by the accumulation of mutations in tumor suppressor genes and proto-oncogenes. The last ten years has also revealed that the common JC Virus (JCV) is frequently found in colorectal tumors. This has led to the hypothesis that the virus, which is known to cause tumors in the lab, may playa role in colorectal cancer. However, the presence of JCV in colorectal tumors does not necessarily indicate a cause-effect relationship. Unlike in vivo and in vitro studies, mathematical and computational modeling …

Connected Matchings In Special Families Of Graphs., Christopher James Caragianis 1980-

Electronic Theses and Dissertations

A connected matching in a graph is a set of disjoint edges such that, for any pair of these edges, there is another edge of the graph incident to both of them. This dissertation investigates two problems related to finding large connected matchings in graphs. The first problem is motivated by a famous and still open conjecture made by Hadwiger stating that every k-chromatic graph contains a minor of the complete graph Kk . If true, Hadwiger's conjecture would imply that every graph G has a minor of the complete graph K n/a(C), where a(G) denotes the independence number of …

Learning Understandable Classifier Models., Jan Chorowski

Electronic Theses and Dissertations

The topic of this dissertation is the automation of the process of extracting understandable patterns and rules from data. An unprecedented amount of data is available to anyone with a computer connected to the Internet. The disciplines of Data Mining and Machine Learning have emerged over the last two decades to face this challenge. This has led to the development of many tools and methods. These tools often produce models that make very accurate predictions about previously unseen data. However, models built by the most accurate methods are usually hard to understand or interpret by humans. In consequence, they deliver …

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 …

A Study Of The Total Coloring Of Graphs., Maxfield Edwin Leidner

Electronic Theses and Dissertations

The area of total coloring is a more recent and less studied area than vertex and edge coloring, but recently, some attention has been given to the Total Coloring Conjecture, which states that each graph's total chromatic number xT is no greater than its maximum degree plus two. In this dissertation, it is proved that the conjecture is satisfied by those planar graphs in which no vertex of degree 5 or 6 1ies on more than three 3-cycles. The total independence number aT is found for some families of graphs, and a relationship between that parameter and the size of …