Digital Commons Network^™

Computational Insight With Monte Carlo Simulations, Boyan Kostadinov

Publications and Research

We introduce Monte Carlo simulations for estimating areas by playing a game of "darts". We also introduce simulations of random walks. We use compact, vectorized programming, based on the R language, for all computer simulations and visualizations, aimed at high school students. This presentation is based on the Invited, prime time lecture given at the summer camp for gifted high school students at City College of New York, July 13, 2011.

Formalizing Reusable Aspect-Oriented Concurrency Control, Neelam Soundarajan, Derek Bronish, Raffi Khatchadourian

Publications and Research

Java and its library provide powerful concurrency control mechanisms. However, their use can lead to similar synchronization code scattered across multiple classes, synchronization and functional code being tangled together, and similar code being duplicated in many applications. Aspect-oriented (AO) programming makes it possible to address these problems. However, the specific behavior of systems built using AO techniques can be challenging to comprehend. We propose a specification approach to precisely express such systems' critical concurrency and synchronization properties. We illustrate the method with a simple example.

A Content Analysis Of The Strategic Plans Of The Coalition Of Urban Serving Universities’ Academic Libraries, Tom Bielavitz

Urban Library Journal

As academic libraries support the curricular mission of the university, the strategic plans of academic libraries often reflect the priorities and initiatives of the larger institution. Urban universities often incorporate concepts of community engagement in their mission. The Coalition of Urban Serving Universities (http://www.usucoalition.org), a federation of 43 urban universities, has developed initiatives which seek to establish the university and city as partners. Using the publicly-accessible strategic plans of the Coalition of Urban Serving Universities (USU) affiliated libraries as a data set, the research will perform a content analysis, using Atlas.ti software, to look for evidence that the libraries are …

Introduction Of Mechatronic Technology Into Cross-Department Product Design Curricula, Andy S. Zhang, Iem Heng, Sidi Berri, Farrukh Zia

Publications and Research

This paper presents the work that is currently engaged by faculty in the departments of mechanical engineering technology and computer engineering technology to introduce mechatronic technology into product design curricula of both departments. This work is funded by the National Science Foundation (Award No. DUE-1003721) recently awarded to New York City College of Technology. Advances in computer technology and semiconductor electronics have created a new product design field called mechatronics. Mechatronics treats product design as system design that requires the tight integration of mechanical components, electrical/electronic systems, industrial design ideas, computer-control systems, embedded systems, and intelligent software into the product …

New Approach To Teach Product Design That Breaks The Disciplinary Boundaries, Iem Heng, Andy S. Zhang, Farrukh Zia

Publications and Research

This paper presents an initiative and a strategy to teach product design to students in different engineering technology fields through cross departmental collaboration and cooperation between faculty members in the Mechanical Engineering Technology and the Computer Engineering Technology Departments. The work is funded by the National Science Foundation Advanced Technology Education Division (Award No. DUE-1003712) recently awarded to New York City College of Technology. Traditional approach to teach product design in a college setting was mostly confined by disciplinary boundaries. There were very little or no collaborations among various engineering departments. Advances in computer technology and semiconductor electronics have created …

“What” And “Where” In Auditory Sensory Processing: A High-Density Electrical Mapping Study Of Distinct Neural Processes Underlying Sound Object Recognition And Sound Localization, Victoria M. Leavitt, Sophie Molholm, Manuel Gomez-Ramirez, John J. Foxe

Publications and Research

Functionally distinct dorsal and ventral auditory pathways for sound localization (WHERE) and sound object recognition (WHAT) have been described in non-human primates. A handful of studies have explored differential processing within these streams in humans, with highly inconsistent findings. Stimuli employed have included simple tones, noise bursts, and speech sounds, with simulated left–right spatial manipulations, and in some cases participants were not required to actively discriminate the stimuli. Our contention is that these paradigms were not well suited to dissociating processing within the two streams. Our aim here was to determine how early in processing we …

Automated Auction Mechanism Design With Competing Markets, Jinzhong Niu

Publications and Research

Resource allocation is a major issue in multiple areas of computer science. Despite the wide range of resource types across these areas, for example real commodities in e-commerce and computing resources in distributed computing, auctions are commonly used in solving the optimization problems involved in these areas, since well designed auctions achieve desirable economic outcomes.

Auctions are markets with strict regulations governing the information available to traders in the market and the possible actions they can take. Auction mechanism design aims to manipulate the rules of an auction in order to achieve specific goals. Economists traditionally use mathematical methods, mainly …

Noncomputable Functions In The Blub-Shub-Smale Model, Wesley Calvert, Ken Kramer, Russell Miller

Publications and Research

Working in the Blum-Shub-Smale model of computation on the real numbers, we answer several questions of Meer and Ziegler. First, we show that, for each natural number d, an oracle for the set of algebraic real numbers of degree at most d is insufficient to allow an oracle BSS-machine to decide membership in the set of algebraic numbers of degree d + 1. We add a number of further results on relative computability of these sets and their unions. Then we show that the halting problem for BSS-computation is not decidable below any countable oracle set, and give a more …

Mathematical Model Of The Dynamics Of Psychotherapy, Larry S. Liebovitch, Paul R. Peluso, Michael D. Norman, Jessica Su, John M. Gottman

Publications and Research

The success of psychotherapy depends on the nature of the therapeutic relationship between a therapist and a client. We use dynamical systems theory to model the dynamics of the emotional interaction between a therapist and client. We determine how the therapeutic endpoint and the dynamics of getting there depend on the parameters of the model. Previously Gottman et al. used a very similar approach (physical-sciences paradigm) for modeling and making predictions about husband–wife relationships. Given that this novel approach shed light on the dyadic interaction between couples, we have applied it to the study of the relationship between therapist and …

A Statistical Method To Correct Radiometric Data Measured By Avhrr Onboard The National Oceanic And Atmospheric Administration (Noaa) Polar Orbiting Environmental Satellites (Poes), Md Zahidur Rahman, Leonid Roytman, Abdelhamid Kadik

Publications and Research

This paper apply an statistical technique to correct radiometric data measured by Advanced Very High Resolution Radiometers(AVHRR) onboard the National Oceanic and Atmospheric Administration (NOAA) Polar Orbiting Environmental Satellites(POES). This paper study Normalized Difference Vegetation Index (NDVI) stability in the NOAA/NESDIS Global Vegetation Index (GVI) data for the period 1982-2003. AVHRR weekly data for the five NOAA afternoon satellites NOAA-7, NOAA-9, NOAA-11, NOAA-14, and NOAA-16 are used for the China dataset, for it includes a wide variety or different ecosystems represented globally. GVI has found wide use for studying and monitoring land surface, atmosphere, and recently for analyzing climate and …

College Senate Minutes May 12, 2011, Bronx Community College Senate

BCC Governance Archives

Minutes for the meeting of the College Senate on May 12, 2011.

Historical Legacies, Information And Contemporary Water Science And Management, Daniel J. Bain, Jennifer A. S. Arrigo, Mark B. Green, Brian A. Pellerin, Charles J. Vörösmarty

Advanced Science Research Center

Hydrologic science has largely built its understanding of the hydrologic cycle using contemporary data sources (i.e., last 100 years). However, as we try to meet water demand over the next 100 years at scales from local to global, we need to expand our scope and embrace other data that address human activities and the alteration of hydrologic systems. For example, the accumulation of human impacts on water systems requires exploration of incompletely documented eras. When examining these historical periods, basic questions relevant to modern systems arise: (1) How is better information incorporated into water management strategies? (2) Does any point …

Melting Trends Over The Greenland Ice Sheet (1958-2009) From Spaceborne Microwave Data And Regional Climate Models, X. Fettweis, Marco Tedesco, M. Van Den Broeke, J. Ettema

Publications and Research

To study near-surface melt changes over the Greenland ice sheet (GrIS) since 1979, melt extent estimates from two regional climate models were compared with those obtained from spaceborne microwave brightness temperatures using two different remote sensing algorithms. The results from the two models were consistent with those obtained with the remote sensing algorithms at both daily and yearly time scales, encouraging the use of the models for analyzing melting trends before the satellite era (1958–1979), when forcing data is available. Differences between satellite-derived and model-simulated results still occur and are used here to identify (i) biases in the snow models …

Memorial To Charles Alexander Baskerville (1928–2009), Allen W. Hatheway, Ajitkumar Shah, Joseph J. Lifrieri, Nazrul I. Khandaker, Stanley Schleifer

Publications and Research

Charles Alexander Baskerville captured our imagination, as a senior colleague in the practice of engineering geology in New York City. “Charlie” held the seat of master Big Apple Geologist during his matured career. He was the source, he knew the possibilities, he was aware of the pitfalls of this most geologically complex of American cities. His final work was his greatest reach—the four bedrock geologic quadrangles of the city. Baskerville mapped New York City for more than fifty years. He was sought and given access to sites of bedrock and bedrock/ overburden interface on the various capitol construction projects undertaken …

Drug Discovery Using Chemical Systems Biology: Weak Inhibition Of Multiple Kinases May Contribute To The Anti-Cancer Effect Of Nelfinavir, Li Xie, Thomas Evangelidis, Lei Xie, Philip E. Bourne

Publications and Research

Nelfinavir is a potent HIV-protease inhibitor with pleiotropic effects in cancer cells. Experimental studies connect its anti-cancer effects to the suppression of the Akt signaling pathway, but the actual molecular targets remain unknown. Using a structural proteome-wide off-target pipeline, which integrates molecular dynamics simulation and MM/GBSA free energy calculations with ligand binding site comparison and biological network analysis, we identified putative human off-targets of Nelfinavir and analyzed the impact on the associated biological processes. Our results suggest that Nelfinavir is able to inhibit multiple members of the protein kinase-like superfamily, which are involved in the regulation of cellular processes vital …

Physical Activity And Hip Fracture Disability: A Review, Ray Marks

Publications and Research

Objective. The present paper examines pertinent literature sources published in the peer-reviewed English language between 1980 and November 1, 2010 concerning hip fractures. The aim was to highlight potential intervention points to offset the risk of incurring a hip fracture and its attendant disability. Methods. An in-depth search of the literature using the key terms: disability, epidemiology, hip fracture, prevention, and risk factors was conducted, along with data from the author's research base detailing the disability associated with selected hip fracture cases. All articles that dealt with these key topics were reviewed, and relevant data were tabulated and analyzed. Results. …

The Communicator, April 18, 2011, Bronx Community College

The Communicator

The Communicator newspaper published on April 18, 2011.

College Senate Minutes April 7, 2011, Bronx Community College Senate

BCC Governance Archives

Minutes for the meeting of the College Senate on April 7, 2011.

In Transit Vol 5 Spring 2011, Laguardia Community College

LaGuardia Community College Publications

In Transit is the LaGuardia Journal on Teaching and Learning. It is published by the Center for Teaching and Learning at LaGuardia Community College, CUNY.

Advances In Optical Biopsy For Cancer Diagnosis, R. R. Alfano

Publications and Research

No abstract provided.

Experiment In Small-Group Homework Tutoring For Remedial Mathematics Students: Preliminary Results, Alice W. Cunningham, Olen Dias, Nieves Angulo

Publications and Research

This paper presents the preliminary results of an 18-section experiment conducted during the Fall 2010 semester regarding the impact of small-group homework-completion tutoring on the performance of Hostos’ remedial mathematics students. The research in question was performed pursuant to a grant, Improving Undergraduate Mathematics Learning: The Effect of Small-Group Homework Tutoring on Remedial Mathematics Learning, from the CUNY Central Office of Academic Affairs. Permission from Hostos’ Institutional Review Board was granted for the conduct of the experiment and for the dissemination of the results.

Ecuadorians In The United States, 1980—2008, Laird W. Bergad

Center for Latin American, Caribbean, and Latino Studies

Introduction: This report examines demographic and socioeconomic factors concerning Ecuadorians in the United States between 1990 and 2008.

Methods: Data on Latinos and other racial/ethnic groups were obtained from the U.S. Census Bureau American Community Survey, reorganized for public use by the Minnesota Population Center, University of Minnesota, IPUMSusa. Cases in the dataset were weighted and analyzed to produce population estimates.

Results: The Ecuadorian population of the U.S. increased dramatically between 1980 and 2008 from about 70,000 to over 550,000 people. Migration increased in each decade and there is no reason to believe that migration from Ecuador will decrease in …

Electromagnetic Wave Propagation In Two-Dimensional Photonic Crystals, Oleg L. Berman, Vladimir S. Boyko, Roman Ya. Kezerashvili, Yurii E. Lozovik

Publications and Research

No abstract provided.

College Senate Minutes March 3, 2011, Bronx Community College Senate

BCC Governance Archives

Minutes for the meeting of the College Senate on March 3, 2011.

Catalog Addendum Spring 2011, Kingsborough Community College

Course Catalogs

No abstract provided.

Trust, Privacy, And Frame Problems In Social And Business E-Networks, Part 1, Jeff Buechner

Publications and Research

Privacy issues in social and business e-networks are daunting in complexity— private information about oneself might be routed through countless artificial agents. For each such agent, in that context, two questions about trust are raised: Where an agent must access (or store) personal information, can one trust that artificial agent with that information and, where an agent does not need to either access or store personal information, can one trust that agent not to either access or store that information? It would be an infeasible task for any human being to explicitly determine, for each artificial agent, whether it can …

Linkage Disequilibrium Based Genotype Calling From Low-Coverage Shotgun Sequencing Reads, Jorge Duitama, Justin Kennedy, Sanjiv Dinakar, Yözen Hernández, Yufeng Wu, Ion I. Măndoiu

Publications and Research

Background Recent technology advances have enabled sequencing of individual genomes, promising to revolutionize biomedical research. However, deep sequencing remains more expensive than microarrays for performing whole-genome SNP genotyping. Results In this paper we introduce a new multi-locus statistical model and computationally efficient genotype calling algorithms that integrate shotgun sequencing data with linkage disequilibrium (LD) information extracted from reference population panels such as Hapmap or the 1000 genomes project. Experiments on publicly available 454, Illumina, and ABI SOLiD sequencing datasets suggest that integration of LD information results in genotype calling accuracy comparable to that of microarray platforms from sequencing data of …

Polycationic Glycosides, Robert Engel, Ishrat Ghani, Diego Montenegro, Marie Thomas, Barbara Klaritch-Vrana, Alejandra Castaño, Laura Friedman, Jay Leb, Leah Rothman, Heidi Lee, Craig Capodiferro, Daniel Ambinder, Eve Cere, Christopher Awad, Faiza Sheikh, Jaimelee Rizzo, Lisa-Marie Nisbett, Erika Testani, Karin Melkonian

Publications and Research

Cationic lipids have long been known to serve as antibacterial and antifungal agents. Prior efforts with attachment of cationic lipids to carbohydrate-based surfaces have suggested the possibility that carbohydrate-attached cationic lipids might serve as antibacterial and antifungal pharmaceutical agents. Toward the understanding of this possibility, we have synthesized several series of cationic lipids attached to a variety of glycosides with the intent of generating antimicrobial agents that would meet the requirement for serving as a pharmaceutical agent, specifically that the agent be effective at a very low concentration as well as being biodegradable within the organism being treated. The initial …

College Senate Minutes February 3, 2011, Bronx Community College Senate

BCC Governance Archives

Minutes for the meeting of the College Senate on February 3, 2011.

Two-Loop Leading Color Corrections To Heavy-Quark Pair Production In The Gluon Fusion Channel, R. Bonciani, Andrea Ferroglia, T. Gehrmann, A. Von Manteuffel, C. Studerus

Publications and Research

We evaluate the two-loop QCD diagrams contributing to the leading color coefficient of the heavy-quark pair production cross section in the gluon fusion channel. We obtain an analytic expression, which is valid for any value of the Mandelstam invariants s and t and of the heavy-quark mass m. Our findings agree with previous analytic results in the small-mass limit and with recent results for the coefficients of the IR poles.