Status Report: A Detector for Measuring the Ground State Hyperfine Splitting of Antihydrogen

The ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration at the Antiproton Decelerator at CERN aims to measure the ground state hyperfine structure of antihydrogen. A Rabi-like spectrometer line has been built for this purpose. A detector for counting antihydrogen is located at the end of the beam line. This contribution will focus on the tracking detector, whose challenging task it is to discriminate between background events and antiproton annihilations originating from antihydrogen atoms which are produced only in small amounts.Comment: Presented at the Seventh Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 20-24, 201

How Can Standards-Based Grading be Implemented into an English Language Arts Classroom in Order to Give More Accurate Feedback of Student Achievement

Properly and fairly assessing student work is an important and timely job. This paper will document the background of traditional grading, along with how standards-­‐based grading benefits teachers, students, and parents. Key pieces of learning around this pertinent topic of assessment come from the current work of Guskey, as well as Wormeli and Reeves. It will also address barriers to standards-­‐ based grading, and what professionals can do to implement this grading system into schools and classrooms, and cover how standards-­‐based grading can be implemented into an English Language Arts classroom in order to give more accurate feedback of student achievement. Tools created by the author include a PowerPoint for parents, a brochure outlining how standards-­‐based grading works, as well as student-­‐friendly resources such as posters and rubrics

Measuring the Effect of Social Background on Judicial Decision-Making in Tax Cases

Judicial decision-making is an important part of the law-making process. The positive research of judicial decision-making is expanding, and its normative significance is undeniable. Even so, judicial decision-making in tax cases has not yet received much empirical attention. This study contributes to the existing literature, empirically evaluating if, and to what extent, non-legal factors affect the outcomes of tax cases. It examines the potential effects of judges’ social backgrounds and adds to the rather small but growing empirical literature on tax litigation. I coded the dependent variable—the judge’s level of acceptance of the taxpayer’s claim, meaning whether the judge sides with the taxpayer and overrules the IRS’s decisions—as an ordinal variable rather than the more common binary coding of the prevailing party. Binary coding can often be arbitrary, resulting in loss of information and misestimation. By allowing for an intermediate category of the prevailing party, in addition to the traditional binary options, the variable transforms to an ordinal measure of the judge’s acceptance level of the taxpayer’s claim. This study finds that in the Israeli setting, judges’ gender, seniority, age at the time of appointment, and age at the time of the decision affect judges’ decisions and subsequently the law

The serve clock reduced rule violations, but did not speed up the game: A closer look at the inter-point time at the 2018 US Open

After treating time rule violations as a trivial offense over the past, tennis associations in 2018 permanently introduced an on-court serve clock to make sure that players do not exceed the time limit between points. In this study, we investigated the influence of this technological officiating aid at its first use in Grand Slam tennis at the 2018 US Open. By investigating time intervals between 2135 points at the Men’s single tournament we found that the share of rule violations decreased (26.3%), but the average time did not (21.6 s) compared to previous studies. We could further confirm that the players still use this time interval for tactical reasons and to recover after longer rallies. In addition, the umpires, which do not show any reputation bias, have a significant influence on the inter-point time as well. Based on these findings we suggest introducing a serve clock that is started automatically. Further, we argue that a dynamic time limit, which takes the intensity of the previous rally into account, would be more appropriate. Players could be granted more time for recovery after longer rallies, but less time after shorter ones in order to reach the intended goals regarding pace of play

Scientific approaches to technological officiating aids in game sports

An increasing number of sports use, what we call, technological umpiring aids to support their umpires and referees respectively. In order to create a basis for further investigations, the aim of this review is to survey the respective literature to extract universal issues of these aids, which are used in different ways in a wide range of settings. Therefore we identified 23 studies, of which the majority was published in the current decade. These studies also embraced, beside empirical works, contributions of the fields of philosophy and jurisprudence. Based on the approaches and findings of the selected studies we identified seven major issues: the underlying phenomena, usage patterns, accuracy, standard of review, influence on the nature of the game, material as well as immaterial costs and the amount of authority that is granted to the umpiring aid. Further, we found regularly some overlapping between these issues, but also that some matters of interest haven’t even been touched so far, for example studying the influence of technological umpiring aids on stakeholders’ opinions. Empirical as well as theoretical evaluations of technological umpiring aids have to deal with this complexity. As this seems to be neglected currently, we suggest that further studies should show awareness of this in their approaches as well as in their conclusions.&nbsp

YIN - YANG

Was ist YIN-YANG? - Geschichte und Erklärungen YIN-YANG und Alchemie in China YIN-YANG in der Traditionellen Chinesischen Medizin YIN-YANG im Daoismus YIJING (I GING) – das "Buch der Wandlungen DIE YIN-YANG METAPHYSISCHE SICHT DES YIJING (nach Bo Mou

Numerical Simulations of Hyperfine Transitions of Antihydrogen

One of the ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration's goals is the measurement of the ground state hyperfine transition frequency in antihydrogen, the antimatter counterpart of one of the best known systems in physics. This high precision experiment yields a sensitive test of the fundamental symmetry of CPT. Numerical simulations of hyperfine transitions of antihydrogen atoms have been performed providing information on the required antihydrogen events and the achievable precision