10 Years of Object-Oriented Analysis on H1

Over a decade ago, the H1 Collaboration decided to embrace the object-oriented paradigm and completely redesign its data analysis model and data storage format. The event data model, based on the RooT framework, consists of three layers - tracks and calorimeter clusters, identified particles and finally event summary data - with a singleton class providing unified access. This original solution was then augmented with a fourth layer containing user-defined objects. This contribution will summarise the history of the solutions used, from modifications to the original design, to the evolution of the high-level end-user analysis object framework which is used by H1 today. Several important issues are addressed - the portability of expert knowledge to increase the efficiency of data analysis, the flexibility of the framework to incorporate new analyses, the performance and ease of use, and lessons learned for future projects.Comment: 14th International Workshop on Advanced Computing and Analysis Techniques in Physics Researc

Representing Religion in Film

This is a book review of Tenzan Eaghll and Rebekka King, eds., Representing Religion in Film (London: Bloomsbury Academic, 2022)

Long-term Properties of Accretion Disks in X-ray Binaries: II. Stability of Radiation-Driven Warping

A significant number of X-ray binaries are now known to exhibit long-term ``superorbital'' periodicities on timescales of $\sim$ 10 - 100 days. Several physical mechanisms have been proposed that give rise to such periodicities, in particular warping and/or precession of the accretion disk. Recent theoretical work predicts the stability to disk warping of X-ray binaries as a function of the mass ratio, binary radius, viscosity and accretion efficiency, and here we examine the constraints that can be placed on such models by current observations. In paper I we used a dynamic power spectrum (DPS) analysis of long-term X-ray datasets (CGRO, RXTE), focusing on the remarkable, smooth variations in the superorbital period exhibited by SMC X-1. Here we use a similar DPS analysis to investigate the stability of the superorbital periodicities in the neutron star X-ray binaries Cyg X-2, LMC X-4 and Her X-1, and thereby confront stability predictions with observation. We find that the period and nature of superorbital variations in these sources is consistent with the predictions of warping theory. We also use a dynamic lightcurve analysis to examine the behaviour of Her X-1 as it enters and leaves the 1999 Anomalous Low State (ALS). This reveals a significant phase shift some 15 cycles before the ALS, which indicates a change in the disk structure or profile leading into the ALS.Comment: 12 pages, 14 figures, Re-submitted to MNRAS after referee's comment

The H1 Forward Track Detector at HERA II

In order to maintain efficient tracking in the forward region of H1 after the luminosity upgrade of the HERA machine, the H1 Forward Track Detector was also upgraded. While much of the original software and techniques used for the HERA I phase could be reused, the software for pattern recognition was completely rewritten. This, along with several other improvements in hit finding and high-level track reconstruction, are described in detail together with a summary of the performance of the detector.Comment: Minor revision requested by journal (JINST) edito

Scholars’ Supreme Court Amicus Brief in Support of Neither Party: \u3cem\u3ePetrella v. Metro-Goldwyn-Mayer\u3c/em\u3e

The appeal to the Supreme Court in Petrella v. Metro-Goldwyn-Mayer deals with the equitable defense of plaintiff’s laches before suing for copyright infringement. Laches is unreasonable and prejudicial delay. MGM allegedly violated plaintiff’s copyright repeatedly over a period of many years; the statute of limitations has not run on the most recent violations. Plaintiff argues that laches should never apply to a cause of action with a statute of limitations. Defendant argues that laches should bar all relief if defendant relied on plaintiff’s failure to sue earlier, without having to match defendant’s reliance to the remedies plaintiff seeks. This scholars’ amicus brief, which supports neither party, argues against all-or-nothing solutions. In particular, the brief says that laches should be available as needed to protect defendant’s reliance, but that defendant should have to show how particular remedies would unfairly override particular reliance interests. Plaintiff also argues that laches should be unavailable because it would be a ground for refusing an injunction that was not mentioned in eBay v. MercExchange. The scholars’ brief takes this occasion to point out several unintended untoward consequences of the four-part test in eBay

Brief of Restitution and Remedies Scholars as Amici Curiae in Support of Respondent: \u3cem\u3eSpokeo v. Robins\u3c/em\u3e

Both consumer protection and restitution may be casualties in a collision with the constitutional law of standing. Spokeo collects information from the internet and publishes it; however, Spokeo neither verifies the facts nor confirms which same-named person it refers to. Robins alleges that Spokeo violated the Fair Credit Reporting Act by disseminating false information about him. He seeks class certification and up to $1,000 in statutory minimum damages instead of compensatory damages. Spokeo argues that Robins lacks standing because he suffered no “injury in fact,” no “concrete harm.” Statutory minimum recoveries for defendants’ violations of plaintiffs’ individual rights without proof of pecuniary damages or actual harm were well known before the American founding. Indeed the First Congress enacted at least one statutory minimum recovery. Congress continues to need the ability to legislate statutory minimum damages as remedies to protect consumers and other plaintiffs. This brief argues that the Court should not erode Congress’s efforts by denying standing to those plaintiffs. The search for harm beyond defendants’ violations of plaintiffs’ legally protected interests arose where defendants’ alleged public-law violations were not individualized, more generally where the laws at issue did not actually apply to plaintiffs. If, on the other hand, a defendant actually invades a plaintiff’s individualized statutory private-law “legally protected interest,” then that violation satisfies the standing prerequisite of “injury in fact.” The Court has never required a plaintiff to adduce an additional or consequential harm beyond a violation. This brief also warns the Court that accepting Spokeo’s standing argument will inadvertently lock the federal courthouse door to much of the law of restitution. Restitution is based on defendant’s gain, not plaintiff’s loss. Many restitution defendants made improper profits by violating plaintiffs’ legal rights without causing plaintiffs any pecuniary loss or harm. The brief reviews numerous long-standing restitution claims that do not involve any “injury in fact” under Spokeo’s apparent definition. These claims to recover a wrongdoer’s improper profits or to set aside a transaction tainted by a wrongdoer’s conflict of interest are crucial parts of our restitution jurisprudence. This brief calls on the Court to stand up for restitution

Work-related psychological health among Catholic religious in Italy : testing the balanced affect model

Drawing on the classic model of balanced affect, the Francis Burnout Inventory (FBI) conceptualised good work-related psychological health among religious leaders in terms of negative affect being balanced by positive affect. In the FBI negative affect is assessed by the Scale of Emotional Exhaustion in Ministry (SEEM) and positive affect is assessed by the Satisfaction in Ministry Scale (SIMS). A sample of 156 religious leaders (95 men and 61 women) serving with the Roman Catholic Church in Italy completed SEEM and SIMS together with an independent measure of wellbeing. The results confirm the hypothesis that high SIMS scores reduced the negative effects of high SEEM scores on the independent measure of wellbeing

Understanding transience and participation in university student-led food gardens

In an increasingly mobile world, transience is becoming the norm. Sustainable community food initiatives, therefore, must organise to withstand high turnover of volunteers. Using a case study of the United Kingdom’s National Union of Students’ food growing scheme in universities, this paper aims to map the causes and effects of short-term, irregular, and low participation using a causal loop diagram to understand how to mitigate their negative impacts and improve participation. Data was gathered through interviews, workshops, photovoice, a fishbowl discussion, and a reflective diary. We found three amplifying feedback loops increasing short-term, irregular and low participation, their causes, and their impacts. These feedback loops were precariously buffered by a continuous in-flow of new potential participants each academic year. We also found that the stakeholders of these gardens conceptualised time akin to both temporary and permanent organisations, and these differing conceptualisations were a source of tension. Furthermore, although ‘organisational amnesia’ was a problem, the gardens were still learningful spaces. We recommend both upstream and downstream solutions are implemented to buffer the impacts of transience and suggest that university and students’ union staff could play a crucial and subtle supporting role