City University of New York,- Queensborough Community College
Recent publications
One challenge in capitalizing on the affordability, sustainability, and accessibility of biohybrid solar energy conversion, including devices based on Photosystem I (PSI), is the identification of metal‐free electrode materials to replace the inorganic substrates commonly found in solar cell development. In this study, commercially available Toray carbon paper (CP) is investigated as a high surface area, carbon electrode for the development of photoactive bioelectrodes consisting of PSI and poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). Mediated anodic photocurrent was achieved at both PSI multilayer and PSI‐polymer composite films on CP electrodes subjected to flame pretreatment. Film preparation was optimized by utilizing potential sweep voltammetry in place of poteniostatic conditions for polymerization. The optimized PSI‐PEDOT:PSS films achieved a 3‐fold increase in polymer growth under potential sweep conditions, quantified through net charge consumed during electropolymerization, resulting in a 4‐fold increase in photocurrent density (‐53 nA cm‐2 vs ‐196 nA cm‐2). The ability to prepare photoactive PSI‐polymer films on metal‐free CP electrodes opens the door to a rapidly scalable system for biohybrid energy production ultimately leading to more affordable, sustainable, and accessible energy. This article is protected by copyright. All rights reserved.
This study sought to explore if and how shelters and other temporary housing providers receive library services from their local public libraries and to measure their satisfaction with these services. E-mails including a link to an online survey were sent to 1,000 temporary housing providers obtained through publicly available data. Seventy-six providers responded, with two-thirds indicating some type of relationship with the public library. Overall, providers were satisfied with these services, but comments revealed several instances where patrons in temporary housing felt unwelcome in the local library, indicating the need for more inclusive and welcoming library services for people who are in temporary housing.
We answer two open problems about lattice-ordered groups that admit a connected lattice-ordered group topology. We show that, in the general case, admitting a connected lattice-ordered group topology does not effect the algebraic structure of the lattice-ordered group. For example, admitting a connected lattice-ordered group topology does not imply that the lattice-ordered group is Archimedean or even representable. On the other hand, if one assumes that the lattice-ordered group has a basis, then admitting a lattice-ordered group topology implies that the lattice-ordered group is a subdirect product of copies of the real numbers.
After reviewing the group structure and representation theory for the dihedral group D2n, we consider an intertwining operator Φρ from the group algebra C[D2n] into a corresponding space of semi-magic matrices. From this intertwining operator, one obtains the generating function for enumerating the associated semi-magic squares with fixed line sum and an algebra extending the circulant matrices. While this work complements the approach to D2n through permutation polytopes, we use only methods from representation theory.
In the past few years, we have seen a tremendous amount of work being done as a result of the “Advance Kidney Health” Initiative. Current technologies are being improved and some exciting new technologies are in development. Up until this point, the Kidney Innovation Accelerator is living up to the challenge put forth by Donald Trump in his executive order for “Advancing American Kidney Health.” The dialysis industry is in for a change and the kidney disease patients will be the beneficiaries of that change.
No PDF available ABSTRACT Obtaining accurate community sound data that allows for the real time annoyance response can be challenging. A mobile phone application called Auditive was developed to collect health history, annoyance, and sound level data from the respondents on a community scale. A pilot study was conducted in the spring of 2022 where 60 respondents uploaded approximately 900 sound and annoyance measurements. To improve the functionality of the application, the preliminary study data were examined for trends and correlations as well as obvious technological and data issues. The type of respondent as well as the kinds of sound recorded were examined. Some basic correlations between factors will be presented. After a review of the data, some modifications of the application were made to improve the quality of the collected data. The second version of the app was launched in Fall of 2022, and data were recorded with a new set of respondents. Comparisons of the data quality and the impact of the improvements to the application were analyzed.
No PDF available ABSTRACT People in urban areas are exposed to high noise levels, leading to an increased number of health issues. A mobile phone application called Auditive, was developed to allow the user to report health history, sound level annoyance, and record sound levels on their mobile phones. This allows for real-time sound level data to be directly correlated with the annoyance response. The data recorded with the auditive app provides opportunities for researchers to find correlations between noise exposure, health, and annoyance. A major concern with mobile phone recorded noise is the accuracy of the absolute sound levels without calibration. This study is focused on calibrating mobile phones to provide more accurate data. Two methods for calibration were considered. Technique one calibrates, using the same correction for each type of phone. MATLAB was used to generate pink noise at different sound levels to test a variety of iPhone models. The correction for each frequency level ranging from 63 Hz to 8000 Hz, was determined. Technique two calibrated individual phones. We tested consistent sounds that allow Auditive users to calibrate their phones. These two different techniques will be compared, to establish the best way to calibrate different mobile phones.
Though Thomas Traherne’s punctuation has been harshly criticized for its idiosyncrasy, scholars have also frequently admired the stylistic effects that it creates. His punctuation is linked to baroque art and music, the use of periods to highlighting subordinate ideas, capitalization to its inability to foster figurative language, and parentheses to his writing and editing process. This essay draws attention to a related, but different, issue that has remained unaddressed: what does Traherne himself have to say about punctuation? An examination of Traherne’s works shows that Traherne’s understanding of punctuation falls into two broad categories: the complex-metaphoric and the politico-religious. His metaphoric understanding, which belongs to a long tradition, can be gleaned from his references to the oracle of Delphi’s capital letters inscription; Ficino’s translation of Plato; and Ben Jonson’s borrowing from a fourteenth-century translation of Julius Scaliger’s grammar. Traherne’s politico-religious understanding of punctuation emerges most clearly in his Roman Forgeries (1673) in which he critiques a long list of ecclesiastical sources—epistles, church canons, multi-volume works of the councils—to argue that Catholic scribes and editors used punctuation for ideological purposes: to obfuscate, hide, and forge religious doctrines. Traherne’s comments reveal that early modern readers were likely to skip over text within parenthesis and marginal annotations and to be impressed by the use of all capital letters. Traherne’s textual criticism through the lens of punctuation helps us to understand early modern reading habits as well as the history of textual editing and textual transmission.
While machine learning techniques have been used to model categorization/decision making tasks that are beyond the capabilities of traditional AI, these new models are typically uninterpretable, i.e., the reasons for their decisions are not clear. Some have argued that, in developing machines that can report the reasons for their decisions, developers should take, as a guide, human explanations for behavior, which make reference to mental states (e.g., knowledge/belief). This proposal is correct, but unattainable given certain characteristics of current AI. To explain, this article draws on recent discourse-analytic research showing that ascriptions of knowledge/belief presume behavioral performances to instantiate particular sorts of broader dispositions. This is reflected by the possibility of ascribing knowledge/belief to an agent on the basis that there can be no other explanation for their observed behavior. The behavior of AI trained through machine learning is unpredictable in ways that precludes such certainty. Consequently, while it is certainly possible to program machines to report mental states of knowledge/belief to account for their decisions, the failure of current AI to engage in typically human forms of life means that such ascribed mental states are inevitably meaningless.
Improve patient outcomes by learning how to identify cardiac dysrhythmias early and set therapeutics in motion.
My community college students have diverse backgrounds but tend to share a narrow perception of ballet. To shift their thinking toward ballet as a learning tool instead of a measurement of what they lack, I created assignments meant to unpack their history with ballet, identify what they hope to learn in ballet class, and begin to “own” the technique. A self-reflection of my educational values inspired me to disrupt the routine teaching in ballet focused on technical learning and replication, which presented ballet as dictates to follow rather than movements to explore, and instead to invite the students to use what they know to demystify ballet and become more thoughtful, perceptive dancers.
Gilbert Coles (1617–1676), a Church of England divine, is of interest to scholars who study early modern religious debates and should be familiar to those who investigate the seventeenth-century educational system or the educational policies during the Interregnum.¹ Coles graduated B.A. in 1639 and M.A. in 1643 from New College, Oxford (Wright 2008).² On 8 May 1648, already a fellow at New College, he refused to recognize the authority of the Parliamentary visitors and was expelled a week later (Burrows, 54).³ Within a week, he was admitted by the Parliamentary visitors to Winchester College (Wright 2008). For Coles, like his near contemporary John Fell (1625–1686), bishop of Oxford and founder of Oxford University Press, this experience must have left an indelible mark in his memory.⁴ Coles’ profound disappointment with the changes in the educational system during the Interregnum and their disastrous effect on an entire generation of graduates can be gleaned from the prefatory letters to his only published work Theophilus and Philodoxus (Oxford, 1674), a dialogue between an Anglican and a convert to Roman Catholicism. The dialogue underwent two more posthumous editions with different titles: A Dialogue between a Protestant and a Papist, Concerning, 1. Prayer in an unknown Tongue. 2. The Half Communion. 3. The Worshiping of Images. 4. The Invocation of Saints (Oxford, 1679) and Four Conferences Concerning I. Reading the Holy Scriptures in the Vulgar Tongue. II. Half Communion. III. Worshipping of Images. IV. The Invocation of Saints (Oxford, 1688). In his prefatory letter addressed to George Morley (1598–1684), Bishop of Winchester, Coles describes the social climate as a ‘Censorious Age: wherein impotent Men (who ought to learn and become Disciples, and reap the Fruits of others Labors) usurp the Chair, and sit as Judges, most severely to censure and condemn. A Generation furnish’d only with Principles destructive; to pull down and not to edifie’ (Coles, 1). In his letter to the reader, worth reading in its entirety, Coles laments the crisis in education and critiques opportunist Presbyterian and Independent clergy for their involvement with the book trade: Since a Puritan Faction made the Schism, disturbing the Peace of Church and State; approving themselves better skil’d at their Weapons then their Arguments […] Since the Presbyterian and Independent Chaplains had learn’d the Merchandize of Plundered Books, selling whole Libraries upon easie terms unto Popish Factors: since our Universities were Garrison’d and Reform’d, All the Fellows and Students of Colleges thrust out to seek their Fortunes; a Generation of Seekers, and puny Disciples succeeding; I say, since the year 1642. there hath bin a sad long Vacation in England from studious Reading and Writing of Books. (Sig. A2v)
We report transport measurements on tunable single-molecule junctions of the organic perchlorotrityl radical molecule, contacted with gold electrodes at low temperature. The current-voltage characteristics of a subset of junctions shows zero-bias anomalies due to the Kondo effect and in addition elevated magnetoresistance (MR). Junctions without Kondo resonance reveal a much stronger MR. Furthermore, we show that the amplitude of the MR can be tuned by mechanically stretching the junction. On the basis of these findings, we attribute the high MR to an interference effect involving spin-dependent scattering at the metal-molecule interface and assign the Kondo effect to the unpaired spin located in the center of the molecule in asymmetric junctions.
This article models the rational incentives involved in providing an informative evaluation for a knowledge management system when the evaluation has some consequences to the evaluator. The analysis is carried out in the context of the peer review process that is currently used to select articles for publication in scientific journals. The article uses the model to evaluate some proposed and implemented improvements to the peer review process. In conclusion, the article outlines other approaches that can result in improvements to the peer review process and invites further empirical research. While the article focuses on academic publishing in the sciences, there is some discussion on how its conclusions could be extended into the humanities or inter-disciplinary scholarship.
The Microbes and Social Equity working group was formed in 2020 to foster conversations on research, education, and policy related to how microorganisms connect to personal, societal, and environmental health, and to provide space and guidance for action. In 2021, we designed our first virtual symposium to convene researchers already working in these areas for more guided discussions. The symposium organizing team had never planned a research event of this scale or style, and this perspective piece details that process and our reflections. The goals were to (1) convene interdisciplinary audiences around topics involving microbiomes and health, (2) stimulate conversation around a selected list of paramount research topics, and (3) leverage the disciplinary and professional diversity of the group to create meaningful agendas and actionable items for attendees to continue to engage with after the meeting. Sixteen co-written documents were created during the symposium which contained ideas and resources, or identified barriers and solutions to creating equity in ways which would promote beneficial microbial interactions. The most remarked-upon aspect was the working time in the breakout rooms built into the schedule. MSE members agreed that in future symposia, providing interactive workshops, training, or collaborative working time would provide useful content, a novel conference activity, and allow attendees to accomplish other work-oriented goals simultaneously.
Let us define a Fibonacci-Lucas hyperbola as a hyperbola passing through an infinite number of points of the form (Fm, Ln), where the Fm are distinct Fibonacci numbers (0, 1, 1, 2, 3, 5, 8, 13, 21,…, where F0 = 0), and the Ln are distinct Lucas numbers (2, 1, 3, 4, 7, 11, 18, 29,…,. where L0 = 2). The simplest examples are 5x2 - y2 = 4, which contains the points (Fk, Lk) with odd subscripts, e.g. (1, 1), (2, 4), (5, 11), and 5x2 - y2 = -4, which contains the points with even subscripts, e.g. (0, 2), (1, 3), (3, 7); (see [1, 2]). These follow immediately from the identity (1) $$L_n^2 - 5F_n^2 = 4{( - 1)^n}.$$ Our goal is to find more of these Fibonacci-Lucas hyperbolas.
Although several studies have demonstrated the importance of listening skills in the classroom and in the workplace, business administration college programs seldom include teaching listening as part of their curriculum because of content saturation and credit hours constraints. In this pilot study, we describe how integrating simple listening activities in the classroom, without making major modifications to the curriculum, improves students’ comprehension and test performance. The study demonstrates how exercising critical listening skills while taking a test has a positive effect on students’ retention of information and test scores.
We present methods to write Tn(x), Chebyshev polynomials of the first kind, as a product of minimal polynomials of cos(2π/m) over integers, Ψm(x), and to write Ψm(x) as ratios of expressions in Tn(x). We also prove the relation Ψm(Tn(x)) = Ψn(Tm(x)) for m, n having the same prime divisors and use it to express Ψm(x) as a linear combination of Tn(x) for certain values of m.
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410 members
Urszula Golebiewska
  • Biological Sciences
Adam Luedtke
  • Social Sciences
Sara Danzi
  • Biological Sciences and Geology
Amy E. Traver
  • Social Sciences
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Diane B. Call, President
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http://www.cuny.edu