College of Staten Island

About: College of Staten Island is a education organization based out in New York, New York, United States. It is known for research contribution in the topics: Random walk & Population. The organization has 1014 authors who have published 1963 publications receiving 46306 citations. The organization is also known as: Staten Island & CSI.

The FERET evaluation methodology for face-recognition algorithms

Abstract: Two of the most critical requirements in support of producing reliable face-recognition systems are a large database of facial images and a testing procedure to evaluate systems. The Face Recognition Technology (FERET) program has addressed both issues through the FERET database of facial images and the establishment of the FERET tests. To date, 14,126 images from 1,199 individuals are included in the FERET database, which is divided into development and sequestered portions of the database. In September 1996, the FERET program administered the third in a series of FERET face-recognition tests. The primary objectives of the third test were to 1) assess the state of the art, 2) identify future areas of research, and 3) measure algorithm performance.

Phenomenology of fully many-body-localized systems

Abstract: We consider fully many-body-localized systems, i.e., isolated quantum systems where all the many-body eigenstates of the Hamiltonian are localized. We define a sense in which such systems are integrable, with localized conserved operators. These localized operators are interacting pseudospins, and the Hamiltonian is such that unitary time evolution produces dephasing but not ``flips'' of these pseudospins. As a result, an initial quantum state of a pseudospin can in principle be recovered via (pseudospin) echo procedures. We discuss how the exponentially decaying interactions between pseudospins lead to logarithmic-in-time spreading of entanglement starting from nonentangled initial states. These systems exhibit multiple different length scales that can be defined from exponential functions of distance; we suggest that some of these decay lengths diverge at the phase transition out of the fully many-body-localized phase while others remain finite.

Mechanisms of tau-induced neurodegeneration

Abstract: Alzheimer disease (AD) and related tauopathies are histopathologically characterized by a specific type of slow and progressive neurodegeneration, which involves the abnormal hyperphosphorylation of the microtubule associated protein (MAP) tau. This hallmark, called neurofibrillary degeneration, is seen as neurofibrillary tangles, neuropil threads, and dystrophic neurites and is apparently required for the clinical expression of AD, and in related tauopathies it leads to dementia in the absence of amyloid plaques. While normal tau promotes assembly and stabilizes microtubules, the non-fibrillized, abnormally hyperphosphorylated tau sequesters normal tau, MAP1 and MAP2, and disrupts microtubules. The abnormal hyperphosphorylation of tau, which can be generated by catalysis of several different combinations of protein kinases, also promotes its misfolding, decrease in turnover, and self-assembly into tangles of paired helical and or straight filaments. Some of the abnormally hyperphosphorylated tau ends up both amino and C-terminally truncated. Disruption of microtubules by the non-fibrillized abnormally hyperphosphorylated tau as well as its aggregation as neurofibrillary tangles probably impair axoplasmic flow and lead to slow progressive retrograde degeneration and loss of connectivity of the affected neurons. Among the phosphatases, which regulate the phosphorylation of tau, protein phosphatase-2A (PP2A), the activity of which is down-regulated in AD brain, is by far the major enzyme. The two inhibitors of PP-2A, I 1 PP2A and I 2 PP2A , which are overexpressed in AD, might be responsible for the decreased phosphatase activity. AD is multifactorial and heterogeneous and involves more than one etiopathogenic mechanism.

The Development and Validation of the Genderism and Transphobia Scale

Abstract: A series of three studies were conducted to develop and validate a scale to measure violence, harassment, and discrimination toward cross-dressers, transgenderists, and transsexuals. In Study 1, we developed the Genderism and Transphobia Scale (GTS). In Study 2, we established the GTS's ability to predict parents' reactions to either a gender conforming or a gender non-conforming boy or girl. Correlations between the GTS and scales that assess homophobia and gender role ideologies suggest convergent validity. In Study 3, we conducted a factor analysis of the scale, found further evidence of the scale's discriminant and convergent validity, and tested the scale's ability to predict previous contact with gender non-conformists. Taken as a whole, the results of these studies demonstrate the basic psychometric properties of a new and useful scale to measure antipathy toward people who cross genders and sexes.