Gravitational Waves from Binary Mergers of Sub-solar Mass Dark Black Holes

We explore the possible spectrum of binary mergers of sub-solar mass black holes formed out of dark matter particles interacting via a dark electromagnetism. We estimate the properties of these dark black holes by assuming that their formation process is parallel to Population-III star formation; except that dark molecular cooling can yield smaller opacity limit. We estimate the binary coalescence rates for the Advanced LIGO and Einstein telescope, and find that scenarios compatible with all current constraints could produce dark black holes at rates high enough for detection by Advanced LIGO.Comment: 6 pages, 2 figures; V2 matches published version (typo in table entry corrected

New Flesh Cinema: Japanese Cyberpunk-Body Horror and Cinema as Catharsis in the Age of Technology

This thesis provides a critical analysis of a specific group of films that combine the subgenres of cyberpunk and body horror which I call New Flesh Cinema. Films of this subgenre counter fears and anxieties of technological advancements by re-imagining the rise of technology and its societal effects as a transitional process through the illustration of literal and visceral depictions of the necessary alterations people will have to undergo in order to transition successfully into the new world. To contradict apocalyptic fears of advancing technology, these films offer a vision of a “New Flesh.” I argue the films share three important commonalities: they depict technology as a mediator of our actions, interactions, and perception of reality, they stress the importance and discomfort of adapting and transforming, and they address technophobia by revealing a fascination and fear of technology as well as the need and inevitability of a new flesh for a new world. The analysis develops over three case studies of five New Flesh Cinema films: Katsuhiro Otomo’s Akira (1988), Shinya Tsukamoto’s Tetsuo: The Iron Man (1989), Shigeru Izumiya’s Death Powder (1986), Shozin Fukui’s 964 Pinocchio (1991), and Fukui’s Rubber’s Lover (1996). Through these case studies, I shed light on the social significance of New Flesh Cinema as a cathartic medium for an anxious society facing social changes. This contributes to a larger conversation concerning media and society’s cyclical pattern of influence. NB: A note on Japanese titles, terms, and names. If the title of a film varies from its English translation, I provide a Romanized version of the original title in parentheses. Japanese terms are italicized with their English translation in parentheses. Names are given in the following order: given name first, family name second

On the Forward-Backward Asymmetry of Leptonic Decays of ttˉt\bar{t} at the Fermilab Tevatron

We report on a study of the measurement techniques used to determine the leptonic forward-backward asymmetry of top anti-top quark pairs in Tevatron experiments with a proton anti-proton initial state. Recently it was shown that a fit of the differential asymmetry as a function of $q_{l}\eta_{l}$ (where $q_{l}$ is the charge of the lepton from the cascade decay of the top quarks and $\eta_{l}$ is the final pseudorapidity of the lepton in the detector frame) to a hyperbolic tangent function can be used to extrapolate to the full leptonic asymmetry. We find this empirical method to well reproduce the results from current experiments, and present arguments as to why this is the case. We also introduce two more models, based on Gaussian functions, that better model the $q_{l}\eta_{l}$ distribution. With our better understanding, we find that the asymmetry is mainly determined by the shift of the mean of the $q_{l}\eta_{l}$ distribution, the main contribution to the inclusive asymmetry comes from the region around $|q_{l}\eta_{l}| = 1$, and the extrapolation from the detector-covered region to the inclusive asymmetry is stable via a multiplicative scale factor, giving us confidence in the previously reported experimental results.Comment: 26 pages, 12 figure

An investigation into the role of Arabidopsis thaliana NAD metabolising enzymes in plant cellular stress responses

Adverse growing conditions resulting from abiotic stresses e.g. pathogen attack results in large losses in crop yields. Understanding and improving plants tolerance to an unfavourable environment remains one of the objectives in the study of plant biotechnology. One growing theory for reducing plant susceptibility to a broad range of stresses is modulation of cellular energy homeostasis. NAD+ (along with ATP) is the most important of cellular energy transducers in the form of a hydrogen ion donor and acceptor. However, a bigger picture is emerging as its role broadens to include a coenzyme, precursor for secondary messengers and a substrate for protein modifications. Three groups of proteins use NAD+ as a substrate, the NAD+ protein deacetylases, poly ADP polymerases and ADP ribose cyclases. Work on these groups of proteins in model organisms have identified their involvement in many biological roles including DNA repair, increasing longevity, initiating apoptosis and regulation of transcription. However, their role in plants is largely unknown. The aim of this study has been to identify the genes involved which use NAD+ and to further characterise their role in plant stress responses. A summary of the main results follows, a) AtPARG2 and sirtuin At5g55760 null lines were more sensitive to DNA damaging agents. b) AtPARG2 lines showed a disruption in circadian rhythm resulting in early flowering. c) Sirtuin At5g09230 null lines were more sensitive to UV-B exposure d) AtPARP3 was highly upregulated with exogenous Abscisic acid application

Teacher Retention In One Urban School District Why Do Teachers Stay: A Case Study

Teacher attrition can have a profound effect on the educational experiences of students. Five schools in one New England school district that experienced the least amount of teacher turnover over a three year time period were purposefully selected for this research study which served to provide a clear understanding of why some teachers stay in urban schools, while so many others leave. Maslow's Hierarchy of Needs (1943) was the theory that framed this study. The participants provided valuable insight into understanding their motivation to stay in the schools. The themes of altruism and generativity emerged in the survey and interview data, allowing the researcher to suggest hiring practices to the Board of Education be structured to include questions that focus on altruistic behaviors and generativity

The Relationship of the Clinical Disc Margin and Bruch's Membrane Opening in Normal and Glaucoma Subjects.

PurposeWe tested the hypotheses that the mismatch between the clinical disc margin (CDM) and Bruch's membrane opening (BMO) is a function of BMO area (BMOA) and is affected by the presence of glaucoma.MethodsA total of 45 normal eyes (45 subjects) and 53 glaucomatous eyes (53 patients) were enrolled and underwent radial optic nerve head (ONH) imaging with spectral domain optical coherence tomography. The inner tip of the Bruch's membrane (BM) and the clinical disc margin were marked on radial scans and optic disc photographs, and were coregistered with custom software. The main outcome measure was the difference between the clinical disc area (CDA) and BMOA, or CDA-BMOA mismatch, as a function of BMOA and diagnosis. Multivariate regression analyses were used to explore the influence of glaucoma and BMOA on the mismatch.ResultsGlobal CDA was larger than BMOA in both groups but the difference was statistically significant only in the normal group (1.98 ± 0.37 vs. 1.85 ± 0.45 mm2, P = 0.02 in the normal group; 1.96 ± 0.38 vs. 1.89 ± 0.56 mm2, P = 0.08 in the glaucoma group). The sectoral CDA-BMOA mismatch was smaller in superotemporal (P = 0.04) and superonasal (P = 0.05) sectors in the glaucoma group. The normalized CDA-BMOA difference decreased with increasing BMOA in both groups (P < 0.001). Presence or severity of glaucoma did not affect the CDA-BMOA difference (P > 0.14).ConclusionsClinical disc area was larger than BMOA in normal and glaucoma eyes but reached statistical significance only in the former group. The CDA-BMOA mismatch diminished with increasing BMOA but was not affected by presence of glaucoma. These findings have important clinical implications regarding clinical evaluation of the ONH