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.

The Role Of Information Technology In Fulfilling The Promise Of Corporate Social Responsibility, David Salb, Hershey H. Friedman, Linda Weiser Friedman

Publications and Research

Young people today want to work at a meaningful job and make a difference in the world. Information technology (IT) is an effective enabler for all sorts of business strategies, so it comes as no surprise that IT is useful for implementing a firm's corporate social responsibility (CSR) initiative as well. The computer professional of the twenty-first century has the tools, training, and talent to be involved in strategic decision making that will have a lasting impact on society. Computer technology can be used to increase profits; but it can also be used to enhance the workplace, create adaptations for …

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.

Peers Don't Let Peers Perish: Encouraging Research And Scholarship Among Junior Library Faculty, Jill Cirasella, Maura A. Smale

Publications and Research

Traditional mentoring has many benefits, but peer mentoring can also offer a valuable support structure along the road to tenure. The Junior Faculty Research Roundtable (JFRR) is a peer-mentoring group for junior library faculty at the colleges and graduate schools of the City University of New York (CUNY). Created to encourage junior library faculty in their scholarly endeavors, JFRR organizes professional development events and facilitates in-person and online conversations on research, writing, and publishing. Now two years old, the group has transformed a large number of scattered junior library faculty into a supportive community of scholars.

Fathers' Time Investments In Children: Do Sons Get More?, Kristin Mammen

Publications and Research

Evidence suggests that, from birth, fathers treat sons differently than daughters in the U.S., as well as in developing countries. Fathers' time investments in children are one channel through which differential treatment by gender may affect children's outcomes. This paper uses data from the 2003 American Time Use Survey to explore three questions about paternal time in married two-parent families: Does the gender composition of his children affect the amount of time a father spends with them? If so, does the gender of the individual child have an additional effect? And is a girl advantaged or disadvantaged by the presence …

Mechanical Intervention For Maintenance Of Cartilage And Bone, Hui B. Sun, Luis Cardoso, Hiroki Yokota

Publications and Research

Mechanical loading provides indispensible stimuli for growth and development of the articular cartilage and bone. Interestingly, depending on loading conditions loads applied to the joint can be beneficial as well as harmful to skeletal maintenance and remodeling. Moderate loads to the synovial joint, for instance, suppress the expression levels of matrix metallproteinases (MMPs), while loads above a threshold tend to increase their destructive activities. This report focuses on two recently developed loading modalities from animal studies, joint motion and joint loading. Their unique characteristics and potential usages for maintenance of the articular cartilage and stimulation of bone remodeling are reviewed. …

Transcription And Translation Of Human F11r Gene Are Required For An Initial Step Of Atherogenesis Induced By Inflammatory Cytokines, Bani M. Azari, Jonathan D. Marmur, Moro O. Salifu, Yigal H. Ehrlich, Elizabeth Kornecki, Anna Babinska

Publications and Research

Background - The F11 Receptor (F11R; aka JAM-A, JAM-1) is a cell adhesion protein present constitutively on the membrane surface of circulating platelets and within tight junctions of endothelial cells (ECs). Previous reports demonstrated that exposure of ECs to pro-inflammatory cytokines causes insertion of F11R molecules into the luminal surface of ECs, ensuing with homologous interactions between F11R molecules of platelets and ECs, and a resultant adhesion of platelets to the inflamed ECs. The main new finding of the present report is that the first step in this chain of events is the de-novo transcription and translation of F11R molecules, …

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 …

Creating Collections Through Collaboration: An Innovative Digital Library Project In Monteverde, Costa Rica, Laurie Kutner, Cindy Dykes, Stefanie Havelka

Publications and Research

The proposed presentation will focus on a successful cross-cultural and cross-institutional collaborative model, involving four institutions, that was developed to create digital library collections of research-based information generated in the Monteverde Zone in Costa Rica. Addressing a need for the Monteverde community to have easy access to locally-produced research-based information, the digital collections contain unpublished research documents produced by area international study programs focusing on local sustainable community development, community health, and tropical ecology.

Each summer, since 2008, LIS graduate student interns from Syracuse University have spent 5-6 weeks on site at the Monteverde Institute in Costa Rica, working to …

Weight-Related Behavior Among Adolescents: The Role Of Peer Effects, Mir M. Ali, Aliaksandr Amialchuk, Frank W. Heiland

Publications and Research

Purpose To investigate whether social interactions in friendship networks influence the following weight-related behaviors of adolescents: exercising regularly, playing an active sport, hours of TV/Video viewing, sleeping six or fewer hours, eating breakfast on weekdays, frequency of eating at fast food restaurants, eating five servings of fruits/vegetables daily, and consuming calorie-dense snacks.

Method Data from a nationally representative sample of adolescents are used to examine the association between peer and individual weight-related behaviors. Evidence from multivariate regression analysis controlling for an extensive list of individual- and family-level factors as well as school-level unobserved heterogeneity is obtained. Results We find a …

“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 …

Smoking Cessation And Relapse Among Pregnant African-American Smokers In Washington, Dc, Ayman El-Mohandes, M. Nabil El-Khorazaty, Michele Kieley, Marie G. Gantz

Publications and Research

Smoking is the single most preventable cause of perinatal morbidity. This study examines smoking behaviors during pregnancy in a high risk population of African Americans. The study also examines risk factors associated with smoking behaviors and cessation in response to a cognitive behavioral therapy (CBT) intervention. This study is a secondary analysis of data from a randomized controlled trial addressing multiple risks during pregnancy. Five hundred African-American Washington, DC residents who reported smoking in the 6 months preceding pregnancy were randomized to a CBT intervention. Psycho-social and behavioral data were collected. Self-reported smoking and salivary cotinine levels were measured prenatally …

Use Of Averaged Norbeck Social Support Questionnaire Scores, Eileen Gigliotti, William Ellery Samuels

Publications and Research

Background. Averaged Norbeck Social Support Questionnaire (NSSQ) support scores remove the influence of network size variability but may unduly lower scores for participants with large networks. Objectives. To evaluate the use of averaged NSSQ scores. Method. Pearson correlations determined if averaged scores decreased as network size increased across three samples. Then, Pearson correlations between a criterion variable and both averaged and raw support scores were computed along with the resultant power to detect a true effect. Results. Neither averaged total functional support nor averaged affect and affirmation scores decreased as sample size increased. However, averaged aid scores did decrease as …

The Influence Of Longitudinal Mentoring On Medical Student Selection Of Primary Care Residencies, Diane Indyk, Darwin Deen, Alice Fornari, Maria T. Santos, Wei-Hsin Lu, Lisa Rucker

Publications and Research

Background The number of students selecting careers in primary care has declined by 41% in the last decade, resulting in anticipated shortages. Methods First-year medical students interested in primary care were paired with primary care mentors. Mentors were trained, and mentors and students participated in focus groups at the end of each academic year. Quantitative and qualitative results are presented. Results Students who remained in the mentoring program matched to primary care programs at 87.5% in the first year and 78.9% in the second year, compared to overall discipline-specific match rates of 55.8% and 35.9% respectively. Students reported a better …

The Economic Impact Of America's Largest Service Export: Travel &Tourism, Anastasia Xenias

Publications and Research

No longer a cottage industry, international travel and tourism is a significant contributor to economic growth and development, with worldwide growth in international tourist arrivals outpacing national income growth one out of every two over the past 30 years.2 For many developing countries, travel and tourism serves as the primary export industry. However, in terms of overall trade dollars, it is industrialized countries that are some of the largest beneficiaries of inbound international travel. Travel and tourism is America's largest service export and a major jobs engine. As international travel and tourism is forecast to grow significantly over the next …

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 …

The Mirror Of Laughter: Mediation, Self-Reflection, And Healing In E.T.A. Hoffmann's Princess Brambilla, Alexander M. Schlutz

Publications and Research

E.T.A. Hoffmann’s capriccio Princess Brambilla explores a narrative realm of liminality and metamorphosis that reveals the fundamental instability of our most basic epistemological distinctions. Set during the irreverent days of the Roman carnival, Brambilla delights in a disorienting chaos of masks, costumes, dream images and hallucinations as Hoffmann pulls all the stops in a fantastical narrative of extraordinary complexity. The text unfolds a carnivalesque universe that – in the spirit of Early German Romantic irony – plays with the inescapable mediatory “distortions” brought about by the structures of human consciousness itself. Just as the carnival is a ritual of life-affirming …

Conformational-Dependent And Independent Rna Binding To The Fragile X Mental Retardation Protein, Xin Yan, Robert B. Denman

Publications and Research

The interaction between the fragile X mental retardation protein (FMRP) and BC1 RNA has been the subject of controversy. We probed the parameters of RNA binding to FMRP in several ways. Nondenaturing agarose gel analysis showed that BC1 RNA transcripts produced by in vitro transcription contain a population of conformers, which can be modulated by preannealing. Accordingly, FMRP differentially binds to the annealed and unannealed conformer populations. Using partial RNase digestion, we demonstrate that annealed BC1 RNA contains a unique conformer that FMRP likely binds. We further demonstrate that this interaction is 100-fold weaker than that the binding of eEF-1A …

Fluid Shear Stress Regulates The Invasive Potential Of Glioma Cells Via Modulation Of Migratory Activity And Matrix Metalloproteinase Expression, Henry Qazi, Zhong-Dong Shi, John M. Tarbell

Publications and Research

Background Glioma cells are exposed to elevated interstitial fluid flow during the onset of angiogenesis, at the tumor periphery while invading normal parenchyma, within white matter tracts, and during vascular normalization therapy. Glioma cell lines that have been exposed to fluid flow forces in vivo have much lower invasive potentials than in vitro cell motility assays without flow would indicate. Methodology/Principal Findings A 3D Modified Boyden chamber (Darcy flow through collagen/cell suspension) model was designed to mimic the fluid dynamic microenvironment to study the effects of fluid shear stress on the migratory activity of glioma cells. Novel methods for gel …

Investigating The Distance Limit Of A Metal Nanoparticle Based Spectroscopic Ruler, Subhasish Chatterjee, Jong Bum Lee, Nikesh V. Valappil, Dan Luo, Vinod M. Menon

Publications and Research

Conventional Förster resonance energy transfer (FRET) processes involving a pair of fluorophore and organic quencher are restricted to an upper distance limit of ~10 nm. The application of a metal nanoparticle as a quencher can overcome the distance barrier of the traditional FRET technique. However, no standard distance dependence of this resonance energy transfer (RET) process has been firmly established. We have investigated the nonradiative energy transfer process between an organic donor (fluorescein) and gold nanoparticle quencher connected by double stranded (ds) DNA. The quenching efficiency of the gold nanoparticle as a function of distance between the donor and acceptor …

The Fight For Public Higher Education In Staten Island: The Saga Of The College Of Staten Island, Mark Rivera

Publications and Research

The College of Staten Island has a unique history as part of the City University of New York (CUNY). The formation of the College of Staten Island coincides in many ways with the development of the borough of Staten Island and its struggle for acknowledge in the greater New York City. The article discusses how the institution was an outcome of compromise, conflict, politics, and desperation. The story begins with the development of the Richmond County/the Borough of Staten Island, the fight for New York City's first public community college, the establishment of New York City's first Upper Division Undergraduate …

Management Of Type 2 Diabetes Mellitus In The Elderly: Role Of The Pharmacist In A Multidisciplinary Health Care Team, Samuel Grossman

Publications and Research

Intensive glycemic control using insulin therapy may be appropriate for many healthy older adults to reduce premature mortality and morbidity, improve quality of life, and reduce health care costs. However, frail elderly people are more prone to develop complications from hypoglycemia, such as confusion and dementia. Overall, older persons with type 2 diabetes mellitus are at greater risk of death from cardiovascular disease (CVD) than from intermittent hyperglycemia; therefore, diabetes management should always include CVD prevention and treatment in this patient population. Pharmacists can provide a comprehensive medication review with subsequent recommendations to individualize therapy based on medical and cognitive …

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 …

Electrode Positioning And Montage In Transcranial Direct Current Stimulation, Alexandre F. Dasilva, Magdalena Sarah Volz, Marom Bikson, Felipe Fregni

Publications and Research

Transcranial direct current stimulation (tDCS) is a technique that has been intensively investigated in the past decade as this method offers a non-invasive and safe alternative to change cortical excitability2. The effects of one session of tDCS can last for several minutes, and its effects depend on polarity of stimulation, such as that cathodal stimulation induces a decrease in cortical excitability, and anodal stimulation induces an increase in cortical excitability that may last beyond the duration of stimulation6. These effects have been explored in cognitive neuroscience and also clinically in a variety of neuropsychiatric disorders – especially when applied over …

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 Transcriptional Analysis Of Carotenoid, Chlorophyll And Plastidial Isoprenoid Biosynthesis Genes During Development And Osmotic Stress Responses In Arabidopsis Thaliana, Stuart Meier, Oren Tzfadia, Ratnakar Vallabhaneni, Chris Gehring, Eleanore T. Wurtzel

Publications and Research

Background The carotenoids are pure isoprenoids that are essential components of the photosynthetic apparatus and are coordinately synthesized with chlorophylls in chloroplasts. However, little is known about the mechanisms that regulate carotenoid biosynthesis or the mechanisms that coordinate this synthesis with that of chlorophylls and other plastidial synthesized isoprenoid-derived compounds, including quinones, gibberellic acid and abscisic acid. Here, a comprehensive transcriptional analysis of individual carotenoid and isoprenoid-related biosynthesis pathway genes was performed in order to elucidate the role of transcriptional regulation in the coordinated synthesis of these compounds and to identify regulatory components that may mediate this process in Arabidopsis …

Childhood Meat Eating And Inflammatory Markers: The Guangzhou Biobank Cohort Study, Mary Schooling, Chao Q. Jiang, Tai H. Lam, W. S. Zhang, Kar Keung Cheng, Gabriel M. Leung

Publications and Research

Background
We hypothesized that socio-economic development could, via nutritionally driven levels of pubertal sex-steroids, promote a pro-inflammatory state among men but not women in developing countries. We tested this hypothesis, using recalled childhood meat eating as a proxy for childhood nutrition, in southern China.

Methods
We used multivariable linear regression in the Guangzhou Biobank Cohort Study phase 3 (2006-8) to examine the adjusted associations of recalled childhood meat eating, <1/week (n = 5,023), about once per week (n = 3,592) and almost daily (n = 1,252), with white blood cell count and its differentials among older (≥50 years) men (n = 2,498) and women (n = 7,369).

Results
Adjusted for age, childhood socio-economic position, education and smoking, childhood meat eating had sex-specific associations with white blood cell count and lymphocyte count, but not granulocyte count. Men with childhood …

Pulsed Out Of Awareness: Eeg Alpha Oscillations Represent A Pulsed-Inhibition Of Ongoing Cortical Processing, Kyle E. Mathewson, Alejandro Lleras, Diane M. Beck, Monica Fabiani, Tony Ro, Gabriele Gratton

Publications and Research

Alpha oscillations are ubiquitous in the brain, but their role in cortical processing remains a matter of debate. Recently, evidence has begun to accumulate in support of a role for alpha oscillations in attention selection and control. Here we first review evidence that 8–12 Hz oscillations in the brain have a general inhibitory role in cognitive processing, with an emphasis on their role in visual processing. Then, we summarize the evidence in support of our recent proposal that alpha represents a pulsed-inhibition of ongoing neural activity. The phase of the ongoing electroencephalography can influence evoked activity and subsequent processing, 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 …