Performance of the ATLAS tau trigger during 2011 data taking period

Many models for physics Beyond the Standard Model predict an increased production rate of tau leptons. Therefore hadronically decaying tau leptons play an important role in searches for new physics at the LHC. By triggering on them, the discovery power of ATLAS can be greatly enhanced for many Beyond the Standard Model searches. In this contribution we present a brief description of the ATLAS tau trigger system and demonstrate its robustness and reliability during 2011.Comment: Poster presented at "XXXI PHYSICS IN COLLISION", Vancouver, Canada, August 28 - September 1, 2011. To be included in conference proceedings. 3 pages, PDFLaTeX, 5 pdf figures and 1 tabl

Differences between genders in marriage

Master's Project (M.Ed.) University of Alaska Fairbanks, 2014Many people quickly find that being married and keeping love going is hard work (Johnson, 2010). The rise in divorce rates over the last four decades, gender equality, and the changing expectations of the 21st century, are influencing the roles in marriage. The intent of this paper is to increase knowledge regarding the changes in marriage, emotional support, and gender trait differences. An application and lesson plan are provided for a psycho-educational group to practice emotional support and learn about gender traits and the expectations of marriage

Dimer algebras, ghor algebras, and cyclic contractions

A ghor algebra is the path algebra of a dimer quiver on a surface, modulo relations that come from the perfect matchings of its quiver. Such algebras arise from abelian quiver gauge theories in physics. We show that a ghor algebra $\Lambda$ on a torus is a dimer algebra (a quiver with potential) if and only if it is noetherian, and otherwise $\Lambda$ is the quotient of a dimer algebra by homotopy relations. Furthermore, we classify the simple $\Lambda$-modules of maximal dimension and give an explicit description of the center of $\Lambda$ using a special subset of perfect matchings. In our proofs we introduce formalized notions of Higgsing and the mesonic chiral ring from quiver gauge theory.Comment: 39 pages. I am reorganizing and expanding arXiv:1412.1750 into four shorter papers; this paper is the first of the fou

Flight Risk or Danger to the Community? Rodriguez and the Protection of Civil Liberties in the U.S. Immigration System

Upon arrival to the United States, foreign nationals are required to prove beyond a doubt that they comply with the various requirements for admission into the country. For those who fail to meet this standard, there are only two options: accept immediate removal to their country of origin, or fight removal. For many who contest their deportation, their fate is civil incarceration until their case is adjudicated, which can take several years. The case of Jennings v. Rodriguez addresses the constitutionality of prolonged civil incarceration without the access of mandatory, periodic bond hearings for these individuals

Anxiety: A Case Study on the Value of Negative Emotions

Negative emotions are often thought to lack value—they’re pernicious, inherently unpleasant, and inconsistent with human virtue. Taking anxiety as a case study, I argue that this assessment is mistaken. I begin with an account of what anxiety is: a response to uncertainty about a possible threat or challenge that brings thoughts about one’s predicament (‘I’m worried,’ ‘What should I do?’), negatively valenced feelings of concern, and a motivational tendency toward caution regarding the potential threat one faces. Given this account of what anxiety is, I show it can be instrumentally valuable: in sensitizing us to uncertainty and prompting caution and risk assessment efforts, it’s an emotion that can help us better recognize and respond to uncertain threats and challenges. But anxiety can also be aretaically valuable—that is, it’s an emotion that can contribute positively to one’s character. For instance, your anxiety about how best to care for your aging mother not only prompts helpful brainstorming about what you should do, but also reflect well on you—your unease demonstrates both an admirable sensitivity and emotional attunement to what’s at stake

Interstipe webbing in the Silurian graptolite Cyrtograptus murchisoni and its palaeobiological significance.

Although it has long been recognized that the Graptoloidea constituted a diverse group of planktic organisms, the precise hydrodynamics of the various colony morphotypes has been a source of debate. Recent discoveries of specimens of Cyrtograptus murchisoni with a complex suite of webs or vanes between the central coiled stipe and the cladial branches have shown that the hydrodynamic modifications of at least this taxon were considerably more complex than previously thought. These webs are composed of very thin peridermal tissue and stretch between the first or second order cladial branches and the main stipe, the webs overlapping to give a screw-type morphology to the rhabdosome. The form of the webbing also has implications for the mode of life and mobility of individual zooids within the colony, as the main areas of web construction are in regions in which the zooids were enclosed within restricted thecal apertures