Digital Commons Network^™

Graduate Bulletin 2011-2012, John Jay College Of Criminal Justice

College Bulletins

No abstract provided.

Associate Professor Makes Mark Composing, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Roofs Of Our Homes May Be Green Tomorrow, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Statistician Recommends A Dose Of Skepticism, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Physics Professor Leads Research Into Laser Uses, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Neath Studies, Teaches The Uncertainties Of Life, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Meanings Of Old Age: A Story In Three Voices, Rivka Tenenbaum-Precel

Dissertations, Theses, and Capstone Projects

As the population of the Western world grows older, the need to understand the meaning of this stage in life grows in importance. Psychological research into the meaning of old age is posing questions on diverse levels, from that of individual ontogenesis to those of the family, community and society at large. Traditionally, developmental psychology has investigated different aspects of aging using measures of cognition, emotion, self-concept and well- being. Other approaches have examined the meaning of old age as embedded in cultural and social relations.

The present study uses a narrative approach to elicit the particular voices and interpretations …

Open Access And Liberal Education: A Look At Armenia, Azerbaijan And Georgia, D. Aram Donabedian, John Carey

Publications and Research

In the post-Soviet era, libraries in Armenia, Azerbaijan and Georgia have faced increasing budgetary challenges. In response to socioeconomic restructuring and the introduction of private enterprise, libraries have been forced to seek alternatives to commercial publishing and licensing models. This paper will assess the status of the open access movement and of Internet filtering controls in the countries of the South Caucasus. It will also argue that developing open models for scholarly communications is crucial to the strengthening of liberal education and civic participation in these aspiring democracies. Libraries, in their role as providers of and advocates for shared information, …

The C.R.E.A.T.E. Approach To Primary Literature Shifts Undergraduates’ Self-Assessed Ability To Read And Analyze Journal Articles, Attitudes About Science, And Epistemological Beliefs, Sally G. Hoskins, David Lopatto, Leslie M. Stevens

Publications and Research

The C.R.E.A.T.E. (Consider,Read, Elucidate hypotheses, Analyze and interpret data, Think of the next Experiment)method uses intensive analysis of primary literature in the undergraduate classroom to demystify and humanize science. We have reported previously that the method improves students’ critical thinking and content integration abilities, while at the same time enhancing their self-reported understanding of “who does science, and why.” We report here the results of an assessment that addressed C.R.E.A.T.E. students’ attitudes about the nature of science, beliefs about learning, and confidence in their ability to read, analyze, and explain research articles. Using a Likert-style survey administered pre- and postcourse, …

Transport Of Antibodies And Nanoparticles Across An In Vitro Blood-Brain Barrier, Lin Zhang

Dissertations and Theses

"The blood-brain barrier (BBB) is a dynamic interface between the blood circulation and the central nervous system (CNS). While it serves as a selective barrier to water and solutes to prevent the blood-borne toxins from entering into the brain tissue, it hinders the drug delivery to the CNS for the treatment of brain diseases. Recently therapeutic antibodies and a variety of drug-loaded nanoparticles (NPs) have been widely used to treat CNS disorders such as brain tumors, Alzheimer's disease and Parkinson's disease. To improve brain delivery efficacy of antibodies and NPs, it is necessary to quantify their transport parameters across the …

Synthesis Of Alkynyl Ribofuranosides, Christian Rodriguez

Dissertations and Theses

No abstract provided.

Validation Of Noaa Interactive Snow Maps In The North American Region With National Climatic Data Center Ground-Based Data, Christine Chen

Dissertations and Theses

"Both the areal coverage of snow and the volume of water in its subsequent melt are of concern for the creation and maintenance of both hydroelectric power and local water supply. The interactive multisensor snow and ice mapping system (IMS) is a geographic interactive system that allows for both the viewing of various sensor data and the mapping daily both snow and sea ice extent by an analyst on one platform. This thesis investigates the agreement between the National Oceanic and Atmospheric Administration’s (NOAA) interactive multisensor snow and ice mapping system (IMS) and snow depth values obtained from the National …

Complexity Of Minimum Corridor Guarding Problems, Ning Xu

Dissertations and Theses

"In this paper, the complexity of minimum corridor guarding problems is discussed. These problem can be described as: given a connected orthogo-nal arrangement of vertical and horizontal line segments and a guard with unlimited visibility along a line segment, find a tree or a closed tour with minimum total length along edges of the arrangement, such that if the guard runs on the tree or on the closed tour, all line segments are visited by the guard. These problems are proved to be NP-complete. Keywords: computational complexity, computational geometry, corridor guarding, NP-complete"

Parallel Computing With Improved Techniques For Monte Carlo Simulation In Var, Ping Hung Wu

Dissertations and Theses

"Value at Risk ( VaR ) is a widely used tool for the assessment of one’s investments. VaR is used to evaluate the risk of loss on a financial portfolio. This metric can be computed in several ways. In the historical approach, past trends of the appropriate combination of stocks is used to estimate current portfolio fluctuations. The variance – covariance method, meanwhile, seeks to discover relationships in price fluctuations for one’s stocks. Finally, Monte Carlo simulation capitalizes upon the stochastic nature of stock prices to predict future value. This latter approach, however, relies heavily on the multiplication of vectors …

Adiabatic Air-Water Two Phase Flow Experimental Facilities Design, Construction And Operation, Saman Reshadi

Dissertations and Theses

"Experimental studies are conducted to predict the phenomenon(s) and to describe some kind of causation. The design of experiment and the experimental facility is a rigorous method. A well designed, manufactured and operated experimental facility is robust under criticism. Thermal hydraulic characteristics of air-water two-phase flows in a vertical tube (poly-dispersed) and also annulus (mono-dispersed) have been subjected to be studied in detail. The hydrodynamics modeling and simulations need a detailed comparison and verification with experimental results. Obviously, a well-designed experimental facility is required to provide a set of highly accurate and reliable data. To do so, two different research …

Synthesis And Characterization Of Pbte Quantum Dots, Faiza Anwar

Dissertations and Theses

No abstract provided.

A Parody Of Nature Or The Nature Of Parody; Melville As Critic Of Emerson And Darwin, Benjamin Barber Rose

Dissertations and Theses

No abstract provided.

My Endless Compliance, Kate Lutzner

Dissertations and Theses

No abstract provided.

Proteomic Analysis Of Human Mesenchymal Stem Cell Aging During Serial Sub-Culture, Pawan Kc

Dissertations and Theses

"Human mesenchymal stem cells (hMSCs) hold great potential for clinical applications in regenerative medicine. However, hMSCs occur at a very low frequency in bone marrow so the clinical use as cellular therapeutics requires suitable techniques for isolation and expansion. Furthermore, these cells can be expanded in vitro for only limited passage numbers before they reach a senescent state. Previous studies have shown that long term culture of hMSCs results in the decrease in proliferation rates, changes in genomic expressions, increase in cell sizes, and other morphological changes. Currently the mechanisms of hMSC aging and biomarkers associated with it have not …

Education Policy And The Mathematics Curriculum In New York City Middle Schools, 1958 To 2002, Joseph Valley

Dissertations, Theses, and Capstone Projects

This study investigates how mathematics education policy and curriculum in New York City changed over the period from 1958 through 2002. It looks at the events leading up to the "new math" era, the "back to basics" movement, and the Standards movement initiated by the National Council of Teachers of Mathematics (NCTM) in 1989. Since this period is bounded by two important pieces of legislation, the National Defense Education Act (NDEA), 1958, and the No Child Left Behind Act (NCLB) 2001 an assessment of the arguments for and against the federal intervention in education is essential.

The research methodology used …

A R&D Based Real Business Cycle Model, Ka Wai Terence Fung

Dissertations, Theses, and Capstone Projects

The New Keynesian Real Business Cycle model with staggered price adjustment is augmented with a R&D producing sector. Two sources of economic shocks are separately considered, namely random participation (perturbances to value of alternative investment opportunities in another sector) and financial intermediation (shocks to the cost of raising capital in the financial intermediation market). We find that, when comparing to the baseline model, both random participation and financial intermediation models can explain pro-cyclical R&D spending. Additionally the investment oversensitivity problem is corrected. However, only the financial intermediation model is consistent with the observed finding that the volatility of R&D is …

Hořava Gravity: Symmetries And Generalized Particle Dynamics, Dario Capasso

Dissertations, Theses, and Capstone Projects

In the search for a theory of Quantum Gravity a new proposal was recently made by P. Hořava. The main feature of this new proposed theory is that it is power-counting renormalizable by construction, and could prove to be truly renormalizable, although more work is needed in this direction.

The renormalizability of the theory is a central issue. Indeed, General Relativity does not have this property, implying that to construct its quantum version we need to “complete” the theory in the UV. Hořava suggested a possible way to provide a UV completion of GR by giving up full spacetime reparametrization …

The United States Of The World: Human Rights, Political Entrepreneurship, And U.S. Foreign Policy Via Affective And Rational Politics, Marriah Star

Dissertations, Theses, and Capstone Projects

This study examines how Political Entrepreneurs in the United States Congress responded to human rights abuses in six countries during the 1970s and 1980s: Cambodia, El Salvador, South Africa, the Soviet Union, Taiwan, and Uganda. It presents a four-point model for approaching the study of United States human rights policy. The key element in all the cases is bonding social capital, also called affective politics. American policy towards the Soviet Union and Uganda both demonstrate the integration of international, transnational, and domestic politics. Taiwan receives special attention because U.S. Taiwan policy continues to exemplify the integration of international relations, transnational …

Quantum Entanglement Of A Tunneling Spin With Mechanical Modes Of A Torsional Resonator, Dmitry A. Garanin, Eugene M. Chudnovsky

Publications and Research

We solve Schr\"odinger equation describing a tunneling macrospin coupled to a torsional oscillator. Energy spectrum is studied for various quantum regimes. Magnetic susceptibility and noise spectrum are computed. We show that entanglement of the spin with mechanical modes of a subnanometer oscillator results in the decoherence of spin tunneling. For larger oscillators the presence of a tunneling spin can be detected through splitting of the mechanical mode at the resonance. Our results apply to experiments with magnetic molecules coupled to nanoresonators.

Renormalization Of The Tunnel Splitting In A Rotating Nanomagnet, Michael F. O'Keeffe, Eugene M. Chudnovsky

Publications and Research

We study spin tunneling in a magnetic nanoparticle with biaxial anisotropy that is free to rotate about its anisotropy axis. Exact instanton of the coupled equations of motion is found that connects degenerate classical energy minima. We show that mechanical freedom of the particle renormalizes magnetic anisotropy and increases the tunnel splitting.

Quantum Tunneling Of The Interfaces Between Normal-Metal And Superconducting Regions Of A Type-I Pb Superconductor, Eugene M. Chudnovsky, S Velez, A Garcia-Santiago, J A. Hernandez

Publications and Research

Evidence of a non-thermal magnetic relaxation in the intermediate state of a type-I superconducor is presented. It is attributed to quantum tunneling of interfaces separating normal and superconducting regions. Tunneling barriers are estimated and temperature of the crossover from thermal to quantum regime is obtained from Caldeira-Leggett theory. Comparison between theory and experiment points to tunneling of interface segments of size comparable to the coherence length, by steps of order one nanometer.

Thermal Diffractive Corrections To Casimir Energies, Daniel N. Kabat, Dimitra Karabali

Publications and Research

We study the interplay of thermal and diffractive effects in Casimir energies. We consider plates with edges, oriented either parallel or perpendicular to each other, as well as a single plate with a slit. We compute the Casimir energy at finite temperature using a formalism in which the diffractive effects are encoded in a lower dimensional non-local field theory that lives in the gap between the plates. The formalism allows for a clean separation between direct or geometric effects and diffractive effects, and makes an analytic derivation of the temperature dependence of the free energy possible. At low temperatures, with …

Constructing Local Bulk Observables In Interacting Ads/Cft, Daniel N. Kabat, Gilad Lifschytz, David A. Lowe

Publications and Research

Local operators in the bulk of AdS can be represented as smeared operators in the dual CFT. We show how to construct these bulk observables by requiring that the bulk operators commute at spacelike separation. This extends our previous work by taking interactions into account. Large-N factorization plays a key role in the construction. We show diagrammatically how this procedure is related to bulk Feynman diagrams.

Differential Microlensing Measurements Of Quasar Broad-Line Kinematics In Q2237+0305, Matthew J. O'Dowd, N F. Bate, R L. Webster, R Wayth

Publications and Research

The detailed workings of the central engines of powerful quasars remain a mystery. This is primarily due to the fact that, at their cosmological distances, the inner regions of these quasars are spatially unresolvable. Reverberation mapping is now beginning to unlock the physics of the Broad Emission Line Region (BELR) in nearby, low-luminosity quasars, however it is still unknown whether this gas is dominated by virial motion, by outflows, or infall. The challenge is greater for more distant, powerful sources due to the very long response time of the BELR to changes in the continuum. We present a new technique …

Holomorphic Motions And Extremal Annuli, Zhe Wang

Dissertations, Theses, and Capstone Projects

Holomorphic motions, soon after they were introduced, became an important subject in complex analysis. It is now an important tool in the study of complex dynamical systems and in the study of Teichmuller theory. This thesis serves on two purposes: an expository of the past developments and a discovery of new theories.

First, I give an expository account of Slodkowski's theorem based on the proof given by Chirka. Then I present a result about infinitesimal holomorphic motions. I prove the |ε log ε| modulus of continuity for any infinitesimal holomorphic motion. This proof is a very well application of Schwarz's …