Digital Commons Network^™

Can There Be Government Accounting Without Accountability?, Michael Granof

Publications and Research

No abstract provided.

Undergraduate Research Through Nasa Initiatives, Gaffar Gailani, Sidi Berri, Nieves Angulo

Publications and Research

There was a common belief that research should only be introduced at the graduate level or at least the senior undergraduate year. Research in the freshman year was not even a topic for discussion. Today, throughout the City University of New York, colleges are stepping forward and conducting research at all undergraduate levels and achieving good results. Conducting research as part of an internship or with a faculty member, proved to be one of the most effective ways to enhance the skills of the students in STEM by many authors. The department of Mechanical Engineering and Industrial Design Technology at …

Soluble Expression, Purification And Characterization Of The Full Length Is2 Transposase, Leslie A. Lewis, Mekbib Astatke, Peter T. Umekubo, Shaheen Alvi, Robert Saby, Jehan Afrose

Publications and Research

Background The two-step transposition pathway of insertion sequences of the IS3 family, and several other families, involves first the formation of a branched figure-of-eight (F-8) structure by an asymmetric single strand cleavage at one optional donor end and joining to the flanking host DNA near the target end. Its conversion to a double stranded minicircle precedes the second insertional step, where both ends function as donors. In IS2, the left end which lacks donor function in Step I acquires it in Step II. The assembly of two intrinsically different protein-DNA complexes in these F-8 generating elements has been intuitively proposed, …

Time Reversal Optical Tomography: Locating Targets In A Highly Scattering Turbid Medium, Binlin Wu, W. Cai, M. Alrubaiee, M. Xu, S. K. Gayen

Publications and Research

A time reversal optical tomography (TROT) method for near-infrared (NIR) diffuse optical imaging of targets embedded in a highly scattering turbid medium is presented. TROT combines the basic symmetry of time reversal invariance and subspace-based signal processing for retrieval of target location. The efficacy of TROT is tested using simulated data and data obtained from NIR imaging experiments on absorptive and scattering targets embedded in Intralipid-20% suspension in water, as turbid medium. The results demonstrate the potential of TROT for detecting and locating small targets in a turbid medium, such as, breast tumors in early stages of growth.

Fabrication Of Size-Tunable Metallic Nanoparticles Using Plasmid Dna As A Biomolecular Reactor, Jacopo Samson, Irene Piscopo, Alex Yampolski, Patrick Nahirney, Andrea Parpas, Amit Aggarwal, Raihan Saleh, Charles Michael Drain

Publications and Research

Plasmid DNA can be used as a template to yield gold, palladium, silver, and chromium nanoparticles of different sizes based on variations in incubation time at 70 °C with gold phosphine complexes, with the acetates of silver or palladium, or chromium acetylacetonate. The employment of mild synthetic conditions, minimal procedural steps, and aqueous solvents makes this method environmentally greener and ensures general feasibility. The use of plasmids exploits the capabilities of the biotechnology industry as a source of nanoreactor materials.

Sexual And Injection-Related Risks In Puerto Rican-Born Injection Drug Users Living In New York City: A Mixed-Methods Analysis, Camila Gelpí-Acosta, Holly Hagan, Samuel M. Jenness, Travis Wendel, Alan Neaigus

Publications and Research

Background These data were collected as part of the National HIV Behavioral Surveillance (NHBS) study. NHBS is a cross-sectional study to investigate HIV behavioral risks among core risk groups in 21 U.S. cities with the highest HIV/AIDS prevalence. This analysis examines data from the NHBS data collection cycle with IDU conducted in New York City in 2009. We explored how the recency of migration from Puerto Rico (PR) to New York City (NYC) impacts both syringe sharing and unprotected sex among injection drug users (IDU) currently living in NYC. Methods We used a mixed-methods approach to examine differences in risk …

Irrelevant Features Of A Stimulus Can Either Facilitate Or Disrupt Performance In A Working Memory Task: The Role Of Fluid Intelligence, Bernardo Perfetti, Marcello Tesse, Sara Varanese, Aristide Saggino, Marco Onofrj

Publications and Research

It has been shown that fluid intelligence (gf) is fundamental to overcome interference due to information of a previously encoded item along a task-relevant domain. However, the biasing effect of task-irrelevant dimensions is still unclear as well as its relation with gf. The present study aimed at clarifying these issues. Gf was assessed in 60 healthy subjects. In a different session, the same subjects performed two versions (letter-detection and spatial) of a three-back working memory task with a set of physically identical stimuli (letters) presented at different locations on the screen. In the letter-detection task, volunteers were asked to match …

Little Ecological Divergence Associated With Speciation In Two African Rain Forest Tree Genera, Thomas Lp Couvreur, Holly Porter-Morgan, Jan J. Wieringa, Lars W. Chatrou

Publications and Research

Background The tropical rain forests (TRF) of Africa are the second largest block of this biome after the Amazon and exhibit high levels of plant endemism and diversity. Two main hypotheses have been advanced to explain speciation processes that have led to this high level of biodiversity: allopatric speciation linked to geographic isolation and ecological speciation linked to ecological gradients. Both these hypotheses rely on ecology: in the former conservation of ecological niches through time is implied, while in the latter adaptation via selection to alternative ecological niches would be a prerequisite. Here, we investigate the role of ecology in …

Summoning The Superheroes: Harnessing Science And Passion To Create A More Effective And Humane Response To Crime. President Travis' Keynote Address On The Future Of Crime Policy, At The National Press Club On October 11, 2011., Jeremy Travis

Publications and Research

No abstract provided.

Dissemination Of Geological Information In Avoiding Geotechnical Risks Associated With Tunnel Construction: Lessons Learned From Deep Voids In Marble In Lower Manhattan, New York City, Nazrul I. Khandaker, Stanley Schleifer, Masud Ahmed, Leah Scott

Publications and Research

Test boring associated with the recently accomplished City Water Tunnel # 3 in Manhattan, New York City revealed moderately to highly weathered marble with insoluble silicate residues composed mostly of phlogopite, chlorite, and tremolite. Apparent control on the weatherability of the marble was in response to original mineral constituents dominating this lithology. Encountered marble samples ranged between pure calcitic to mixed dolomitic/siliceous types. Fresh marble samples collected from adjacent boring locations revealed characteristic geochemical data: Lime (25-45%), Silica (4-7%), Alumina (1-3%), MgO (5-20%), and LOI (35-42%); compressive strength of unweathered marble varied between 2000-3000 Kg/cm². Relict foliations with …

Censuring The Praise Of Alienation: Interstices Of Ante-Alienation In Things Fall Apart, No Longer At Ease, And Arrow Of God, Kevin Frank

Publications and Research

Interrogating Abiola Irele’s largely unchallenged praise of alienation, this essay is bold and insightful in returning to Chinua Achebe’s African trilogy to examine the subtler, equally dangerous agent of externality: ante-alienation, or social alienation within traditional African culture, which precedes race-based, colonial alienation. This ante-alienation challenges Négritude’s paradisiacal view of Africa and raises questions about Africans always being happiest with themselves within their traditional culture.

Was The Black Death In India And China?, George D. Sussman

Publications and Research

Firsthand accounts of the Black Death in Europe and the Middle East and many subsequent historians have assumed that the pandemic originated in Asia and ravaged China and India before reaching the West. One reason for this conviction among modern historians is that the plague in the nineteenth century originated and did its worst damage in these countries. But a close examination of the sources on the Delhi Sultanate and the Yuan Dynasty provides no evidence of any serious epidemic in fourteenth-century India and no specific evidence of plague among the many troubles that afflicted fourteenth-century China.

Al Sears' Saxophone At York Library, John A. Drobnicki

Publications and Research

Among the memorabilia in the York College Library's Music History Archive is a saxophone that was owned by the renowned Jazz musician Al Sears.

Advances In Optical Imaging In Cancer Research – Part 1, Robert R. Alfano

Publications and Research

No abstract provided.

International Travel And Tourism Exports And The New York Economy, Anastasia Xenias

Publications and Research

The United States is exceptionally positioned within the global tourism industry. The U.S. ranks first in international visitor spending and second in international traveler volume.2 Travel and tourism is America's largest service export and a major jobs engine. Within the United States, New York holds a dominant position in terms of both international visitor arrivals and spending, placing New York at the top of the global tourism industry. In 2010, five states dominated the share of international visitation within the United States—New York (33 percent), Florida (22 percent), California (21 percent), Nevada (10 percent) and Hawaii (8 percent), in respectively. …

Visualizing History: Using Museum Skills To Teach Information Literacy To Undergraduates, Sandra Roff

Publications and Research

Baruch College began an information studies minor that reinforces the principles of information literacy. However, it did not employ the visual to teach information literacy skills. To fill this gap, a new course, using the process of researching and preparing an exhibit script to teach undergraduates information literacy skills, was developed. In this course students have the opportunity to become creative, while at the same time learning the organizational and research skills needed to compose exhibit proposals, write labels and press releases and finally to produce exhibit script.

Defying De-Stalinization: Albania’S 1956, Elidor Mehilli

Publications and Research

Drawing on recently declassified Albanian, Soviet, East German, and Western archival sources, as well as a rich historiography on Nikita Khrushchev's secret speech and the Hungarian revolution of 1956, this article investigates the little-known events of 1956 in Albania. Rejecting de-Stalinization, the Albanian Communist leader Enver Hoxha was able to vindicate his position against Yugoslavia's brand of socialism abroad, fortify his rule at home, and claim more aid from Moscow, Beijing, and the Soviet bloc. This article discusses the Tirana Party Conference of April 1956, treating the Albanian Party of Labor (the Communist party) as an “information society.” The article …

Workplace Consequences Of Electronic Exhibitionism And Voyeurism, William A. Herbert

Publications and Research

The popularity of email, blogging and social networking raises important issues for employers, employees and labor unions. This article will explore contemporary workplace issues resulting from the related social phenomena of electronic exhibitionism and voyeurism. It will begin with a discussion of the international social phenomenon of individuals electronically distributing their personal thoughts, opinions, and activities to a potential worldwide audience while at the same time retaining a subjective sense of privacy. The temptation toward such exhibitionism has been substantially enhanced by the advent of Web 2.0. The article then turns to the legal implications of electronic voyeurism including employer …

Using The Open Systems Perspective To Understand Critical Incidents, Denise D. P. Thompson

Publications and Research

At the end of its Fall 2010 conference, the Academy for Critical Incident Analysis (ACIA) called for the development of frameworks that would aid in the study and analysis of critical incidents. This paper responds to that call. The paper answers the question, “is it possible to construct a framework that is generic enough to encapsulate the essential components observed in all critical incidents?” The paper utilizes the open systems perspective to develop a conceptual framework to help us delineate and understand critical incidents and how they evolve. The paper presents examples to substantiate arguments made about the framework. The …

Who Enters The Foreclosure Process?, Eric Doviak, Sean P. Macdonald

Publications and Research

Since February 2010, detailed information on every home mortgage default and foreclosure in New York State must be filed with the New York State Banking Department (NYSBD). The data enables us to identify the financial characteristics that make a defaulted borrower more (or less) likely to enter the foreclosure process. Our analysis of the NYSBD data suggests that borrowers in default who took larger loans are more likely to progress to foreclosure. It also suggests that reducing principal balances may reduce the foreclosure rate, but might have an adverse effect on the mortgage industry. Given the frequent criticism of the …

The September 11 Digital Archive, Stephen Brier, Joshua Brown

Publications and Research

This article focuses on the creation and subsequent development of the September 11 Digital Archive (www.911digitalarchive.org), currently one of the largest digital repositories of historical materials on the September 11 attacks. The article reflects on archival and methodological questions and on issues raised by the efforts of staff members at the Center for History and New Media (CHNM) at George Mason University and at the American Social History Project/Center for Media and Learning (ASHP) at the City University of New York Graduate Center to preserve and present via the Internet digital resources related to the epochal events of …

Age-Related Differences In Idiom Production In Adulthood, Peggy S. Conner, Jungmoon Hyun, Barbara O'Connor-Wells, Inge Anema, Mira Goral, Marie-Michelle Monereau-Merry, Daniel Rubino, Raija Kuckuk, Loraine Obler

Publications and Research

To investigate whether idiom production was vulnerable to age-related difficulties, we asked 40 younger (ages 18–30) and 40 older healthy adults (ages 60–85) to produce idiomatic expressions in a story-completion task. Younger adults produced significantly more correct idiom responses (73%) than did older adults (60%). When older adults generated partially correct responses, they were less likely than younger participants to eventually produce the complete target idiom (old: 32%; young: 70%); first-word cues after initial failure to retrieve an idiom resulted in more correct idioms for older (24%) than younger (15%) participants. Correlations between age and idiom correctness were positive for …

Unbound (Bioavailable) Igf1 Enhances Somatic Growth, Sebastien Elis, Yingjie Wu, Hayden-William Courtland, Dara Cannata, Hui Sun, Mordechay Beth-On, Chengyu Liu, Hector Jasper, Horacio Domené, Liliana Karabatas, Clara Guida, Jelena Basta-Pljakic, Luis Cardoso, Clifford J. Rosen, Jan Frystyk, Shoshana Yakar

Publications and Research

SUMMARY Understanding insulin-like growth factor-1 (IGF1) biology is of particular importance because, apart from its role in mediating growth, it plays key roles in cellular transformation, organ regeneration, immune function, development of the musculoskeletal system and aging. IGF1 bioactivity is modulated by its binding to IGF-binding proteins (IGFBPs) and the acid labile subunit (ALS), which are present in serum and tissues. To determine whether IGF1 binding to IGFBPs is necessary to facilitate normal growth and development, we used a gene-targeting approach and generated two novel knock-in mouse models of mutated IGF1, in which the native Igf1 gene was replaced by …

The Niddk Central Repository At 8 Years—Ambition, Revision, Use And Impact, Charles F. Turner, Huaqin Pan, Gregg W. Silk, Mary-Anne Ardini, Vesselina Bakalov, Stephanie Bryant, Susanna Cantor, Kung-Yen Chang, Michael Delatte, Paul Eggers, Laxminarayana Ganapathi, Sujatha Lakshmikanthan, Joshua Levy, Sheping Li, Joseph Pratt, Norma Pugh, Ying Qin, Rebekah Rasooly, Helen Ray, Jean E. Richardson, Amanda Flynn Riley, Susan M. Rogers, Charlotte Scheper, Sylvia Tan, Stacie White, Philip C. Cooley

Publications and Research

The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) Central Repository makes data and biospecimens from NIDDK-funded research available to the broader scientific community. It thereby facilitates: the testing of new hypotheses without new data or biospecimen collection; pooling data across several studies to increase statistical power; and informative genetic analyses using the Repository’s well-curated phenotypic data. This article describes the initial database plan for the Repository and its revision using a simpler model. Among the lessons learned were the trade-offs between the complexity of a database design and the costs in time and money of implementation; the …

Temporal Sensitivity Changes With Extended Training In A Bisection Task In A Transgenic Rat Model, Bruce L. Brown, Sophie Hohn, Alexis Faure, Stephan Von Horsten, Pascale Le Blanc, Nathalie Desvignes, Nicole El Massioui, Valerie Doyere

Publications and Research

The present study investigated temporal perception in a Huntington disease transgenic rat model using a temporal bisection procedure. After initial discrimination training in which animals learned to press one lever after a 2-s tone duration, and the other lever after a 8-s tone duration for food reward, the bisection procedure was implemented in which intermediate durations with no available reinforcement were interspersed with trials with the anchor durations. Bisection tests were repeated in a longitudinal design from 4 to 8 months of age.The results showed that response latencies evolved from a monotonic step-function to an inverted U-shaped function with repeated …

Prenatal Cocaine Exposure Increases Synaptic Localization Of A Neuronal Rasgef, Grasp-1 Via Hyperphosphorylation Of Ampar Anchoring Protein, Grip, Kalindi Bakshi, Mary Kosciuk, Robert G. Nagele, Eitan Friedman, Hoau-Yan Wang

Publications and Research

Prenatal cocaine exposure causes sustained phosphorylation of the synaptic anchoring protein, glutamate receptor interacting protein (GRIP1/2), preventing synaptic targeting of the GluR2/3-containing alpha-amino-3-hydroxy-5-methyl-4- isoxazolepropionic acid-type glutamate receptors (AMPARs; J. Neurosci. 29: 6308–6319, 2009). Because overexpression of GRIP-associated neuronal rasGEF protein (GRASP-1) specifically reduces the synaptic targeting of AMPARs, we hypothesized that prenatal cocaine exposure enhances GRASP-1 synaptic membrane localization leading to hyper-activation of ras family proteins and heightened actin polymerization. Our results show a markedly increased GRIP1-associated GRASP-1 content with approximately 40% reduction in its rasGEF activity in frontal cortices (FCX) of 21-day-old (P21) prenatal cocaineexposed rats. This cocaine effect …

Drosophila Insulin And Target Of Rapamycin (Tor) Pathways Regulate Gsk3 Beta Activity To Control Myc Stability And Determine Myc Expression In Vivo, Federica Parisi, Sara Riccardo, Margaret Daniel, Mahesh Saqcena, Nandini Kundu, Annalisa Pession, Daniela Grifoni, Hugo Stocker, Esteban Tabak, Paola Bellosta

Publications and Research

Background Genetic studies in Drosophila melanogaster reveal an important role for Myc in controlling growth. Similar studies have also shown how components of the insulin and target of rapamycin (TOR) pathways are key regulators of growth. Despite a few suggestions that Myc transcriptional activity lies downstream of these pathways, a molecular mechanism linking these signaling pathways to Myc has not been clearly described. Using biochemical and genetic approaches we tried to identify novel mechanisms that control Myc activity upon activation of insulin and TOR signaling pathways. Results Our biochemical studies show that insulin induces Myc protein accumulation in Drosophila S2 …

Protection Of Melanized Cryptococcus Neoformans From Lethal Dose Gamma Irradiation Involves Changes In Melanin's Chemical Structure And Paramagnetism, Abdelahad Khajo, Ruth A. Bryan, Matthew Friedman, Richard M. Burger, Yan Levitsky, Arturo Casadevall, Richard S. Magliozzo, Ekaterina Dadachova

Publications and Research

Certain fungi thrive in highly radioactive environments including the defunct Chernobyl nuclear reactor. Cryptococcus neoformans (C. neoformans), which uses L-3,4-dihydroxyphenylalanine (L-DOPA) to produce melanin, was used here to investigate how gamma radiation under aqueous aerobic conditions affects the properties of melanin, with the aim of gaining insight into its radioprotective role. Exposure of melanized fungal cell in aqueous suspensions to doses of γ-radiation capable of killing 50 to 80% of the cells did not lead to a detectable loss of melanin integrity according to EPR spectra of melanin radicals. Moreover, upon UV-visible (Xe-lamp) illumination of melanized cells, the increase in …

Reducing Psychosocial And Behavioral Pregnancy Risk Factors: Results Of A Randomized Clinical Trial Among High-Risk Pregnant African American Women, Jill G. Joseph, Ayman El-Mohandes, Michele Kiely, M. Nabil El-Khorazaty, Marie G. Gantz, Allan A. Johnson, Kathy S. Katz, Susan M. Blake, Maryann W. Rossi, Siva Subramanian

Publications and Research

Objectives. We evaluated the efficacy of a primary care intervention targeting pregnant African American women and focusing on psychosocial and behavioral risk factors for poor reproductive outcomes (cigarette smoking, secondhand smoke exposure, depression, and intimate partner violence).

Methods. Pregnant African American women (N=1044) were randomized to an intervention or usual care group. Clinic-based, individually tailored counseling sessions were adapted from evidence-based interventions. Follow-up data were obtained for 850 women. Multiple imputation methodology was used to estimate missing data. Outcome measures were number of risks at baseline, first follow-up, and second follow-up and within-person changes in risk from baseline to the …

High Burden Of Prevalent And Recently Acquired Hiv Among Female Sex Workers And Female Hiv Voluntary Testing Center Clients In Kigali, Rwanda, Sarah L. Braunstein, Chantal M. Ingabire, Eveline Geubbels, Joseph Vyankandondera, Marie-Michele Umulisa, Elysee Gahiro, Mireille Uwineza, Coosje J. Tuijn, Denis Nash, Janneke H. H. M. Va De Wijgert

Publications and Research

Methods: We conducted a cross-sectional survey of 800 FSW and 1,250 female VCT clients in Rwanda, which included interviewing and testing for HIV-1/2, HSV-2 and pregnancy, and BED-CEIA and Avidity Index (AI) to identify recent infections among HIV-infected women.

Results: Prevalence of HIV-1, HSV-2, and pregnancy were 24% (95% CI: 21.0–27.0), 59.8% (56.4–63.2), and 7.6% (5.8–9.5) among FSW, and 12.8% (10.9–14.6), 43.2% (40.4–46.0), and 11.4% (9.7–13.3) among VCT clients, respectively. Thirty-five percent of FSW and 25% of VCT clients had never been HIV tested. Per national guidelines, 33% of newly HIV-diagnosed FSW and 36% of VCT clients were already eligible …