Long Island University is a private, coeducational, nonsectarian institution of higher education with locations and programs spanning the New York metropolitan area, overseas, and online. The university offers more than 500 academic programs at two main campuses, LIU Post and LIU Brooklyn, as well as non-residential programs at LIU Brentwood, LIU Riverhead, and LIU Hudson at Rockland and Westchester. LIU has NCAA Division I and II athletics and hosts the annual George Polk Awards in Journalism. Wikipedia.
City University of New York, Pace University and Long Island University | Date: 2015-03-19
The present invention relates to novel antiviral compounds which are covalently attached to solid, macro surfaces. In another embodiment, the invention relates to novel antiviral compositions including a polymeric material and, embedded therein, an antiviral compound. In other embodiments, the invention relates to making a surface antiviral and making a polymeric material antiviral.
Liebling S.L.,Long Island University
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2013
Previous studies of the semilinear wave equation in Minkowski space have shown a type of critical behavior in which large initial data collapse to singularity formation due to nonlinearities while small initial data does not. Numerical solutions in spherically symmetric anti-de Sitter space are presented here which suggest that, in contrast, even small initial data collapse eventually. Such behavior appears analogous to the recent result of Bizoń and Rostworowski that found that even weak, scalar initial data collapse gravitationally to black hole formation via a weakly turbulent instability. Furthermore, the imposition of a reflecting boundary condition in the bulk introduces a cutoff, below which initial data fails to collapse. This threshold appears to arise because of the dispersion introduced by the boundary condition. © 2013 American Physical Society.
Shi L.-F.,Long Island University
Journal of Speech, Language, and Hearing Research | Year: 2010
Purpose: The effects of acoustic degradation and context use on sentence perception were evaluated in listeners differing in age of English acquisition. Method: Five groups of 8 listeners, native monolingual (NM), native bilingual (NB), and early, late, and very late non-native bilingual (NN-E, NN-L, and NN-VL, respectively), identified target words in 400 Speech-Perception-in-Noise (SPIN) sentences presented in 8 combinations of noise (+6 vs. 0 dB signal-to-noise ratio), reverberation (1.2 vs. 3.6 s reverberation time), and context (high vs. low predictability). Results: Separate effects of noise, reverberation, and context were largely level dependent and more significant than their interaction with listeners' age of English acquisition. However, the effect of noise, as well as the combined effect of reverberation and context, was mediated by age of acquisition. NN-VL listeners' performance was significantly compromised in all test conditions. NB, NN-E, and NN-L listeners' use of context, by contrast, deviated substantially from the monolingual normative in difficult listening conditions. Conclusions: Findings suggest that linguistic background needs to be considered in the understanding of bilingual listeners' context use in acoustically degraded conditions. Direct comparison of early bilingual listeners' performance with monolingual norms may be inappropriate when speech is highly degraded. © American Speech-Language-Hearing Association.
Shi L.-F.,Long Island University
Journal of Speech, Language, and Hearing Research | Year: 2012
Purpose: The present study was designed to investigate what linguistic variables best predict bilingual recognition of acoustically degraded sentences and how to identify bilingual ndividuals who might have more difficulty than their monolingual counterparts on such tasks. Method: Four hundred English speech-perception-in-noise (SPIN) sentences with high and low context were presented in combinations of noise (signal-to-noise ratio: +6 and 0 dB) and reverberation (reverberation time: 1.2 and 3.6 s) to 10 monolingual and 50 bilingual listeners. A detailed linguistic profile was obtained for bilingual listeners using the Language Experience and Proficiency Questionnaire. Results: Variables per reading in English (age of fluency, proficiency, and preference) emerged as strong predictors of performance across noise, reverberation, and context effects. Via discriminant analyses, bilingual listeners who rated their accent to be perceptible and reported shorter length of immersion in an English-spoken country or school tended to score significantly lower on the SPIN test than monolingual listeners. Conclusions: Bilingual listeners' linguistic background plays a major role in their use of context in degraded English sentences. Rather than conventional variables such as age of acquisition, variables pertaining to reading, proficiency, immersion, and accent severity may be obtained for improved prediction of bilingual performance on the task. © American Speech-Language-Hearing Association.
Agency: NSF | Branch: Standard Grant | Program: | Phase: LINGUISTICS | Award Amount: 73.77K | Year: 2015
Subject-verb agreement is pervasive in many languages and it is one of the earliest syntactic relations that children must master. Prior research has suggested that its course of acquisition is different in different languages: early production but late comprehension have been observed in English, Spanish and Xhosa (Bantu) while production and comprehension are both early in French (by 30 months of age). The PIs in this collaborative project, Dr. Legendre and Dr. Barriere, seek to reconcile these results by evaluating the hypothesis that children can detect agreement markers better and earlier in languages in which these markers are both perceptually salient and semantically transparent.
The research project will target four languages chosen because their relevant properties allow a number of factors to be teased apart: English, Spanish, French, and Haitian Creole. This project is innovative in seeking to investigate the role of perceptual factors, both at the sentential level and cross-linguistically, and fosters interdisciplinary approaches to the study of language acquisition by melding research in theoretical syntax, psycholinguistics, corpus analysis, and speech perception, and combining their respective research methods. The project will stimulate international collaborations between the PIs in the US and research consultants in France, and will provide valuable research experience for a post-doctoral researcher, and for graduate and undergraduate students at the two US sites.
Agency: NSF | Branch: Standard Grant | Program: | Phase: | Award Amount: 159.99K | Year: 2013
This proposal is based on a geometric study of cohomology theories. Cohomology theories provide useful invariants for topological spaces, and their classification by the spectra provides a unified picture, indicating how numerous they are. Nevertheless, our understanding of cohomology theories, along with their equivariant, differential, and other mixed variants, remains limited. This is partly due to the fact that aside from a few examples, such as ordinary cohomology and K-theory, there are no good geometric descriptions of the cohomology classes of a given theory with immediate ties to naturally occurring objects in geometry. Even in the case of K-theory and its variants, our current understanding leaves many questions unanswered. Geometrically representing classes of a theory has proven to be useful in many regards, including the construction of non-homotopy invariant refinements, like differential theories, their equivariant versions, and pushforwards (cocycle level index theorems). In this proposal, the PI studies several ways of obtaining geometric models for K-theories (equivariant, differential, and their mixes) as well as refinements that take into account the Wilson line effects by using the Bismut Chern character. In one component of the research, the PI studies differential K-theory using representatives of the Atiyah class in the Toledo-Tong twisted resolution. In another, the PI aims to use his work with his collaborators, on the equivariant holonomy for abelian gerbes, to study topological invariants of non-abelian grebes. The main tool for this part is the equivariant topological chiral homology. This research has graduate student components.
Cohomology theories, their variants, and refinements are part of a branch of mathematics called topology. Cohomological invariants can measure a wide variety of phenomena, from wrappings of a piece of rope around a pole, to the possibilities for the shape of the universe. Cohomological techniques and descriptions have taken a central role in modeling high energy physics phenomena to the extent that several fundamental concepts were originally discovered by physicist and mathematicians independently. Comparison and cross-fertilization between the two fields has resulted in an accelerated enrichment of both, a trend that continues to pick up momentum increasingly. A modern categorical point of view now serves as a common language for mathematicians and physicists to explore cohomological ideas and their byproducts. Several components of the grant engage undergraduate and graduate students.
Agency: NSF | Branch: Continuing grant | Program: | Phase: GRAVITATIONAL THEORY | Award Amount: 180.46K | Year: 2013
Observing highly energetic astrophysical sources through fundamentally different radiation channels will be crucial in order to better understand some of the most intriguing, even exotic, objects and events in our universe. Included among these are compact binary objects, composed of black holes and neutron stars, as well as gamma ray bursts and related phenomena. Such objects are powerful engines for the production of gravitational, electromagnetic and neutrino radiation. Many research groups as well as observatories and experiments (both planned and already in operation), are engaged in attempting to observe, interpret and understand these emissions. Their overall understanding will be enhanced and furthered as theoretical insight and predictions are used to aid in their detection and in testing fundamental theories and phenomena. Our purpose here is to systematically consider non-vacuum compact binary systems and to do so with sufficient fidelity to obtain their emissions in gravitational and electromagnetic waves. We will do so by incorporating realistic equations of state, electromagnetic interactions and cooling effects. In particular, our approach is to tie ever more tightly together our theoretical understanding of the possible components and sources of multi-messenger astrophysics. We will build our efforts on a strong computational foundation, namely a robust implementation of the equations of general relativistic, resistive magnetohydrodynamics with adaptive mesh refinement.
This research is of broad interest and naturally combines expertise and know-how that reaches beyond physicists to astrophysicists and mathematicians. It will advance our understanding of some of the most intriguing processes in the universe, and will provide valuable candidate waveforms for gravitational wave observatories (e.g. LIGO). Our participation in multinational efforts to compare waveforms and approaches will be especially valuable to the gravitational wave and astrophysical communities. The activities described here will help further undergraduate, graduate, and postdoctoral research and training, including a number of underrepresented individuals. Also, this work uses the HAD infrastructure and thus helps support broadly useful, publicly released, software. Additionally, this research involves some of the most exotic objects in our universe that captures the imagination of the general public.
Agency: NSF | Branch: Standard Grant | Program: | Phase: ROBERT NOYCE SCHOLARSHIP PGM | Award Amount: 1.17M | Year: 2011
Through a Phase 1 Noyce Teacher Scholarship Track, Long Island University Brooklyn (LIU-B) plays a key role in improving the quality and retention of science teachers in NYC schools that serve large numbers of poor and minority students. LIU-B School of Education (SOE) is well positioned to assist NYC schools in improving science teaching and learning, and it does so through the Scholarship and Excellence in Secondary Science Education (SESSE) program that recruits high-performing underrepresented science majors and prepares them to become high quality science teachers who persist in their teaching careers. A number of faculty from several STEM disciplines participate in the project. The SESSE program targets upper level undergraduate biology and biochemistry majors to become certified to teach in New York City middle and high schools. SESSE provides scholarships and supporting stipends to sixteen minority science students in two Cohorts of 8 each in years 1 and 2 of the project.
Agency: NSF | Branch: Continuing grant | Program: | Phase: GRAVITATIONAL THEORY | Award Amount: 60.00K | Year: 2016
A new window on the universe opened recently with the detection of gravitational waves by the LIGO gravitational wave observatory. Other telescopes observe electromagnetic waves (that includes visible light), and this new window will give us quite different and complementary information. The work described here seeks to understand better how to get the most information from these gravitational wave observations. In particular, we study the very violent merger of neutron stars and black holes to determine how the properties of these systems are encoded in both gravitational and electromagnetic waves.
The goals supported by this award are to study the dynamics of compact objects and the radiation they emit to capture the most science possible from aLIGO and similar detectors. We will do so through computational studies of binary systems incorporating magnetized matter with resistive effects, realistic equations of state, electromagnetic and neutrino emission, and r-process nucleosynthesis. Our efforts will include the following: (i) We will determine gravitational waveforms from these binaries, with a focus on observable imprints from the neutron star equation of state, mass, and radius. (ii) We will investigate the construction of analytic and phenomenological gravitational wave templates. (iii) We will study outflows from merging binaries as an indicator of events with characteristic electromagnetic and neutrino signals. (iv) We will study the global behavior of magnetic fields and the electromagnetic emissions, such as jets, that originate in the magnetosphere of coalescing binaries.
Agency: NSF | Branch: Continuing grant | Program: | Phase: | Award Amount: 175.65K | Year: 2012
The overall long-term goal of the Long Island University IT-Catalyst proposal is to create a world-class racially, ethnically, and gender diverse STEM faculty to reflect the diversity of their students. To prepare to meet this goal they will identify barriers to the hiring, retention, and advancement of STEM women, and especially underrepresented minority STEM women. Specifically they will collect and assess historical and current quantitative data; conduct surveys and focus group interviews of a comprehensive array of STEM stakeholders on campus; review department and institutional policies and practices; and analyze proven ADVANCE-IT strategies used at other institutions. Overall, this project is expected to provide Long Island University with critical information with which to develop an institutionally targeted plan for transformation, and promote institutional buy-in for such a transformation. The diverse nature of the institution and the quality of the PI team suggest that this institution?s work will serve as a model for institutional transformation at other similar colleges and universities.