cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Complex Langevin dynamics at finite chemical potential: mean field analysis in the relativistic Bose gas
Creators: name: Aarts, Gert
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Stochastic quantization can potentially be used to simulate theories with a complex action due to a nonzero chemical potential. We study complex Langevin dynamics in the relativistic Bose gas analytically, using a mean field approximation. We concentrate on the region with a Silver Blaze problem and discuss convergence, stability, fixed points, and the severeness of the sign problem. The real distribution satisfying the extended Fokker-Planck equation is constructed and its nonlocal form is explained. Finally, we compare the mean field results in finite volume with the numerical data presented in Ref. [1].
description: 20 pages, 6 eps figures, discussion on the severeness of the sign problem added, to appear in JHEP
Identifying the atomic configuration of the tip apex using STM and frequency-modulation AFM with CO on Pt(111)
Creators: name: Gretz, Oliver
name: Weymouth, Alfred J.
name: Giessibl, Franz J.
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: 530 Physik

description: We investigated the atomic structure of metal tips by scanning individual CO molecules adsorbed on Pt(111) using scanning tunneling microscopy (STM) and frequency-modulation atomic force microscopy (FM-AFM). When scanning very close over a CO molecule, the frontmost atoms of the tip can be individually resolved in both the FM-AFM image and in the STM image. This is in contrast to previous work where CO was adsorbed on a different substrate: Cu(111). In this previous study, individual atoms could not be observed in the raw STM image but only in FM-AFM. We discuss the mechanisms behind the higher spatial resolution in STM. On Cu(111), the occupied surface state plays a large role in STM images near the Fermi level, and as adsorbed CO repels the surface state, it appears as a wide trough in STM images. In contrast, Pt(111) lacks an occupied surface state and an adsorbed CO molecule appears as a peak. We investigate if CO bending strongly influences the STM images, concluding that the atomic resolution of the tip over Pt(111) is due to highly localized through-molecule tunneling and CO bending is insignificant for contrast formation. Modelling the current between the CO and front atoms of the tip supports our findings.
Commissioning of the CMS Experiment and the Cosmic Run at Four Tesla
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The CMS Collaboration conducted a month-long data-taking exercise known as the Cosmic Run At Four Tesla in late 2008 in order to complete the commissioning of the experiment for extended operation. The operational lessons resulting from this exercise were addressed in the subsequent shutdown to better prepare CMS for LHC beams in 2009. The cosmic data collected have been invaluable to study the performance of the detectors, to commission the alignment and calibration techniques, and to make several cosmic ray measurements. The experimental setup, conditions, and principal achievements from this data-taking exercise are described along with a review of the preceding integration activities.
Coming home : university exchange students' narratives of cultural re-entry
Creators: name: Thomas, Sharon
Publisher: name: University Of Tasmania
Year: 2023

description: Cultural re-entry ‚Äö- the process of returning to one's home culture after an overseas sojourn ‚Äö- is ostensibly a return to the familiar: familiar places and familiar people. Yet, this simplistic understanding of the phenomenon belies its multi-layered, complex nature. More appropriately framed as a psychological process than one of physical relocation, re-entry is characteristically challenging for sojourners, its impact being felt affectively, behaviourally and cognitively. Despite being a focus of research for half a century, the challenges associated with re-entry remain primarily unexpected, by both sojourners and those at home. The cost ‚Äö-personal, social and financial ‚Äö- of such ignorance is great. As globalization and concomitant increased travel becomes a reality, an increasing number of people world-wide will experience the phenomenon of re-entry. This longitudinal qualitative study sought to explore the experiences and perceptions of six university students during the first six months of their return to their home culture from an international exchange. Employing a narrative inquiry approach, this study sought openended exploration, the purpose of which was to understand rather than explain the experience. It was motivated by a desire to enhance multiple meanings as opposed to enhancing certainty. In presenting six individual stories this study gave voice to experience, and in doing so, traded generalisation for particularisation. There are a number of provocative findings from this study. First, the study underscored the inherently idiosyncratic nature of each person's re-entry experience. Second, it reinforced the notion of cultural adjustment as a process, the symbiotic relationship between the overseas experience and re-entry clearly discernible. Third, affective and cognitive processes (internal) ‚Äö- as opposed to behavioural processes (external) ‚Äö- were found to dominate the participants' re-entry experiences. Finally, relationships emerged as the most significant and powerful variable in the re-entry experience, a finding which positions re-entry as a social rather than a personal phenomenon. While students were the lens through which the phenomenon of re-entry was explored in this study, these findings may be of interest to the myriad groups who undertake sojourns ‚Äö- not only prospective sojourners, but also their families, friends and colleagues, and those responsible for organizing and managing sojourner travel.
Detection of qubit-oscillator entanglement in nanoelectromechanical systems
Creators: name: Schmidt, Thomas L.
name: Borkje, Kjetil
name: Bruder, Christoph
name: Trauzettel, Bjoern
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Experiments over the past years have demonstrated that it is possible to bring nanomechanical resonators and superconducting qubits close to the quantum regime and to measure their properties with an accuracy close to the Heisenberg uncertainty limit. Therefore, it is just a question of time before we will routinely see true quantum effects in nanomechanical systems. One of the hallmarks of quantum mechanics is the existence of entangled states. We propose a realistic scenario making it possible to detect entanglement of a mechanical resonator and a qubit in a nanoelectromechanical setup. The detection scheme involves only standard current and noise measurements of an atomic point contact coupled to an oscillator and a qubit. This setup could allow for the first observation of entanglement between a continuous and a discrete quantum system in the solid state.
description: 9 pages, 3 figures
Decision support tools for visualising coral reef futures at regional scales
Creators: name: Melbourne-Thomas, Jessica
Publisher: name: University Of Tasmania
Year: 2023

description: Coral reefs provide essential ecosystem services that support the livelihoods of millions of people in coastal populations around the globe. However, human activities have severely degraded a large number of reefs worldwide, and reef ecosystem function is under continuing threat from anthropogenic impacts. Novel management approaches are required to sustain ecosystem function and there is a need for better scientic tools to inform coordinated management strategies for coral reefs over appropriate spatial and temporal scales. Simulation models are useful tools for projecting future responses of reef systems to multiple threats and can assist in evaluating the eectiveness of alternative management actions. This thesis presents a generic model framework that can be applied to tropical coral reef systems anywhere in the world. The model, CORSET (Coral Reef Scenario Evaluation Tool) uses dynamic equations to capture local-scale ecological processes on individual reefs. These reefs are connected at regional scales through ocean transport of larval propagules. CORSET is designed as a decision support tool for visualising reef futures over several decades at regional scales in the order of 10\\(^2\\) - 10\\(^3\\) km. The test case for CORSET is the Meso-American Reef system in the western Caribbean. Validation and sensitivity analysis for this test case conrms that the model is able to realistically capture regional-scale reef dynamics over time series of 30-100 years. A separate, validated version of the model for coral reefs in the Philippines region of the South China Sea - which has very dierent species, community structure, diversity patterns and threatening processes compared with the Meso-American system { demonstrates that CORSET is portable between dissimilar reef systems in dierent locations. Scenario analysis for these two reef systems demonstrates how CORSET can be applied to examine potential reef futures under alternative assumptions about future threats and management actions. Finally, CORSET is integrated with a dynamic socioeconomic model to produce a coupled biophysical-socioeconomic model system for reefs in the Mexican Caribbean. CORSET is the rst regional-scale simulation model for coral reef ecosystems that has demonstrated utility for reef systems in dierent geographic regions. The model will be made generally available for use by researchers and decision makers through a web portal in the near future
Walking the talk towards a circular economy: Advances & demonstrations from the ECOBULK and other European projects
Creators: name: Bertacchini, Federica
name: Barragan, Cristina
Publisher: name: Zenodo
Year: 2021
Subjects: circular economy
european project

description: Agenda, speakers summary and banner of the workshop developed in the framework of ECOBULK "Walking the talk towards a circular economy: Advances & demonstrations from the ECOBULK and other European projects".
The Active Centaurs
Creators: name: Jewitt, David
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Centaurs are recent escapees from the Kuiper belt that are destined either to meet fiery oblivion in the hot inner regions of the Solar system or to be ejected to the interstellar medium by gravitational scattering from the giant planets. Dynamically evolved Centaurs, when captured by Jupiter and close enough to the Sun for near-surface water ice to sublimate, are conventionally labeled as "short-period" (specifically, Jupiter-family) comets. Remarkably, some Centaurs show comet-like activity even when far beyond the orbit of Jupiter, suggesting mass-loss driven by a process other than the sublimation of water ice. We observed a sample of 23 Centaurs and found nine to be active, with mass-loss rates measured from several kg/s to several tonnes/s. Considered as a group, we find that the "active Centaurs" in our sample have perihelia smaller than the inactive Centaurs (median 5.9 AU vs. 8.7 AU), and smaller than the median perihelion distance computed for all known Centaurs (12.4 AU). This suggests that their activity is thermally driven. There are several possibilities for the origin of the mass-loss from the active Centaurs. We consider the possibility that activity in the Centaurs is triggered by the conversion of amorphous ice into the crystalline form accompanied by the release of trapped gases, including carbon monoxide. By imposing the condition that crystallization should occur when the crystallization time is shorter than the orbital period we find a qualitative match to the perihelion distribution of the active Centaurs and conclude that the data are consistent with the hypothesis that the Centaurs contain amorphous ice.
description: 52pages, 15 figures, accepted by AJ February 24 2009
Performance of the CMS Drift Tube Chambers with Cosmic Rays
Creators: name: The CMS Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Studies of the performance of the CMS drift tube barrel muon system are described, with results based on data collected during the CMS Cosmic Run at Four Tesla. For most of these data, the solenoidal magnet was operated with a central field of 3.8 T. The analysis of data from 246 out of a total of 250 chambers indicates a very good muon reconstruction capability, with a coordinate resolution for a single hit of about 260 microns, and a nearly 100% efficiency for the drift tube cells. The resolution of the track direction measured in the bending plane is about 1.8 mrad, and the efficiency to reconstruct a segment in a single chamber is higher than 99%. The CMS simulation of cosmic rays reproduces well the performance of the barrel muon detector.
Additional file 1 of Monitoring small airway dysfunction in connective tissue disease-related interstitial lung disease: a retrospective and prospective study
Creators: name: Xu, Linrui
name: Sgalla, Giacomo
name: Wang, Faping
name: Zhu, Min
name: Li, Liangyuan
name: Li, Ping
name: Xie, Qibing
name: Lv, Xiaoyan
name: Yu, Jianqun
name: Wang, Gang
name: Wan, Huajing
name: Richeldi, Luca
name: Luo, Fengming
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 1: Table S1. The difference of prediction equations and reference values of different races. Table S2. Demographic and clinical characteristics of the retrospective study population. Table S3. Logistic regression for assessment of the factors associated with CTD-ILD with SAD. Table S4. Comparison of demographic and clinical characteristics between CTD-ILD patients with and without small airway dysfunction for prospective data. Table S5. Correlations between the PFT values and pulmonary symptoms. Table S6. Comparison of treatment between CTD-ILD patients with and without small airway dysfunction for prospective data (87 patients who finished two follow-up visits). Table S7. Changes of pulmonary function parameters versus baseline in CTD-ILD with and without SAD. Table S8. Interaction between SAD and trends of pulmonary function among different CTD-ILDs.
title: Bank managers in Jordan: a study of motivation, job satisfaction and comparative organizational practices
Creators: name: Al-Rasheed, Mohd. Adel Mahmoud
Publisher: name: University of Kent
Year: 2021

description: This thesis is an attempt to fill a gap in research in the area of motivation and job satisfaction in the Jordanian/Arab managerial context. It is basically built on a representative sample of 266 Jordanian managers taken from 21 Jordanian/Arab and Western (Anglo-American) banks in Jordan. The thesis is an exploratory and comparative organizational behaviour and management study. It implements two instruments of investigation, a standardized questionnair and in-depth interviews. The major findings of the thesis that Jordanian bank managers' patterns of motivation and job satisfaction and their interpretation of the 'higher goals of the job' (for example, autonomy) are similar to Western managers'. The assessmentf about 20 related factors on bank managers' motivation and job satisfaction reveal that different demographic and social and other organizational factors contribute to the significant impact on bank managers' motivation and job satisfaction. However, the significant impact of job related factors is more noticeable compared with other factors. The thesis, with consideration to the recommendation and the implications of relevant research, extends the study beyond managers' attitudes and includes relevant managerial practices and systems. It also attemps to reflect on the interaction of the organization within the wider environment. The comparison of the managerial practices and systems (for example, delegation of authority) and other organizational variables (for example, specialization) relevant to bank managers' motivation and job satisfaction reveal that major and significant differences are found between Western (Anglo-American) and Jordanian/Arab banks. It also reveals that the type of managerial practices and systems in the Jordanian/Arab banks is, by and large, traditional and less bureaucratic compared with the managerial practices in Western (Anglo-American) banks. The thesis addresses the main managerial implications Jordanian/Arab banks could consider when designing their motivational and job satisfaction systems. In an attempt to interpret the traditional managerial practices in the Jordanian/Arab banks, pertinent factors are discussed. These relate to particular factors of the Jordanian/Arab banks and to specific cultural and social factors in the Jordanian/Arab societies.
Wild Child, Feral Text: Reading the Human-Animal Borderland
Creators: name: Fagan, AP
Publisher: name: University Of Tasmania
Year: 2023

description: This thesis is a study of the figure variously known as the wild child,‚ÄövÑvp feral child,‚ÄövÑvp or borderland child‚ÄövÑvp as it appears in six contemporary literary texts. I identify two interrelated strands of inquiry that can be usefully brought to bear on these wild-child texts. First, how can such children, generally lacking in many if not all verbal and written language skills, be adequately represented, and their perspective portrayed, in textual form? Secondly, how has the human/animal boundary been constructed in and through literature, and how may it potentially be deconstructed, through the specific framework of the wild-child narrative? My thesis examines three pairs of novels. In the first chapter I look at two novels based on the true case of Victor of Aveyron, a wild boy captured from the woods of France at the dawn of the Enlightenment: Mordecai Gerstein's Victor: A Novel Based on the Life of the Savage of Aveyron (1998) and Jill Dawson's Wild Boy (2003). The two texts examined in the second chapter‚ÄövÑvØEva Hornung's Dog Boy (2009) and Indra Sinha's Animal's People (2007)‚ÄövÑvØuse details derived from actual contemporary feral-child encounters to create new characters. Urban-dwelling and homeless, these children have more in common, perhaps, with a stray dog than with the mythical figures of Romulus and Remus, or even Victor of Aveyron. In the final chapter, I demonstrate the versatility of the wild-child category by applying it to two characters who do not ostensibly seem to fit within it: Simon in Keri Hulme's The Bone People (1986) and the eponymous gorilla in Peter Goldsworthy's Wish (1995). These borderland-children, I argue, work to further worry the edges of the human/animal divide. My theoretical approach draws predominantly from the emerging discipline of Animal Studies. The six texts I study use representations of bodies, body languages, and sensory descriptions that attempt to imagine an alternative to the logocentrism of the human perception of the world. In examining how language works as a theme, a device, and the foundation for evoking the wild-child character, my aim is to identify the ways in which language is used to demarcate, and elevate, humanity from the rest of animal-kind. Conversely, and perhaps more importantly, my thesis also seeks to demonstrate the ways in which fictional imaginings and constructions of wild child characters can work to undermine the human/animal boundary.
Nash equilibria in Fisher market
Creators: name: Adsul, Bharat
name: Babu, Ch. Sobhan
name: Garg, Jugal
name: Mehta, Ruta
name: Sohoni, Milind
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Much work has been done on the computation of market equilibria. However due to strategic play by buyers, it is not clear whether these are actually observed in the market. Motivated by the observation that a buyer may derive a better payoff by feigning a different utility function and thereby manipulating the Fisher market equilibrium, we formulate the {\em Fisher market game} in which buyers strategize by posing different utility functions. We show that existence of a {\em conflict-free allocation} is a necessary condition for the Nash equilibria (NE) and also sufficient for the symmetric NE in this game. There are many NE with very different payoffs, and the Fisher equilibrium payoff is captured at a symmetric NE. We provide a complete polyhedral characterization of all the NE for the two-buyer market game. Surprisingly, all the NE of this game turn out to be symmetric and the corresponding payoffs constitute a piecewise linear concave curve. We also study the correlated equilibria of this game and show that third-party mediation does not help to achieve a better payoff than NE payoffs.
From multimode to monomode guided atom lasers: an entropic analysis
Creators: name: Gattobigio, G. L.
name: Couvert, A.
name: Jeppesen, M.
name: Mathevet, R.
name: Guery-Odelin, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We have experimentally demonstrated a high level of control of the mode populations of guided atom lasers (GALs) by showing that the entropy per particle of an optically GAL, and the one of the trapped Bose Einstein condensate (BEC) from which it has been produced are the same. The BEC is prepared in a crossed beam optical dipole trap. We have achieved isentropic outcoupling for both magnetic and optical schemes. We can prepare GAL in a nearly pure monomode regime (85 % in the ground state). Furthermore, optical outcoupling enables the production of spinor guided atom lasers and opens the possibility to tailor their polarization.
Precognitive priming and sequential effects in visual word recognition
Creators: name: Garton, R
Publisher: name: University Of Tasmania
Year: 2023

description: The proposition that psi is operative not as an anomaly but as a normative component of information processing was investigated, focusing on the normative operation of precognition. Distinct to prior paradigms of precognition research that measure exact identification of stimuli, it was considered most informative, for the proposition of psi's normativeness, to investigate its operation as a context effect, and, specifically, as priming and sequential effects. Evidence for psi's operation as a priming effect was firstly examined, and a priming paradigm involving continuous lexical decision was deemed, on the basis of prior research, to be potentially informative. As to what information could be precognitively primed, the question of retrieval, under a precognition condition, of imaginal and ideational information was addressed, in Experiment 1, in the form of post-response orthographic and semantic priming. Together with observations of classical past-to-present priming, precognitive semantic priming was observed, as was precognitive orthographic priming involving nonwords, in the speed and, partially, the accuracy of lexical decisions. Discussion related the results to theories of visual word recognition as well as precognition. Precognition as a sequential effect was then examined. Using data from a prior experiment in lexical decision that sensitised accuracy over speed as the relevant measure, a precognitive alternation effect was observed in the presence of a classical repetition effect; specifically, responses to words were more accurate when the prior stimulus was a word, and when the subsequent (precognitive‚ÄövÑvp) stimulus was a nonword, while responses to nonwords showed no reliable sequential effects. The possible role of sequential artefacts in randomly allocating targets and conditions was examined but found not to disconfirm the precognition hypothesis, while meriting further study. A third experiment sought to replicate this ostensibly precognitive alternation effect in lexical decision latency, while also manipulating nonword lexicality so as to identify a psychological basis for the effect that would conceptually, rather than statistically, preclude the operation of randomisation artefacts. The precognitive alternation effect was again observed ‚Äö- but (again) only in error-rate, and only on word trials. No nonword lexicality effect, and no artefacts of randomisation, appeared to modulate this effect. In the classical direction of sequences, word and nonword repetition effects were observed, modulated by nonword lexicality. These findings again merited discussion in relation to theories of both visual word recognition and precognition. General discussion further concerned the possible role of precognition in visual word recognition, and the informativeness of context effects paradigms of psi research in addressing such possibilities.
ELABS SPIRIT Checklist
Creators: name: Brewin, Mark
Publisher: name: figshare
Year: 2021
Subjects: subject: 110304 Dermatology
subject: FOS: Clinical medicine
subject: 110323 Surgery

description: The SPIRIT 2013 Statement provides evidence-based recommendations for the minimum content of a clinical trial protocol. SPIRIT is widely endorsed as an international standard for trial protocols. The recommendations are outlined in a 33-item checklist and figure. Each checklist item is detailed in the Explanation & Elaboration paper.
Four rural Anglican communities of faith : an ethnography of hope
Creators: name: Collins, JA
Publisher: name: University Of Tasmania
Year: 2023

description: This thesis is an ethnography of four rural Anglican communities of faith in Tasmania. Drawing on theorists and concepts from both sociology and theology I examine how a new model of ministry (Enabler Supported Ministry) has facilitated re-invigoration, growth, and an outward focus in these rural parishes, which were formerly characterized by decline and impending closure. My study explores how these four parishes, rather than adhering to traditional forms of ministry and resisting change, have embraced change in both ministry and outlook. My research sits at the boundary between sociology and theology. I draw on theorists such as Weber, Berger, Drane, Lyon, Bouma, Ammerman, and Finke and Stark who, likewise, explore this fruitful and rewarding intersection of the two disciplines. This thesis is primarily sociological but, given the subject matter of the thesis, it is impossible to separate out the theological and by working at the intersection of these two disciplines I hope to produce a rich analysis. This research is unique and important because it addresses a much-needed area of study in its sociological analysis of rural Anglican parishes in Australia. It is also methodologically innovative because of my 'insider/outsider status' and my explicit use of participatory action research. There are surprisingly few ethnographic studies of contemporary Christianity, and very few of contemporary Christianity in rural locations, particularly from an Australian perspective or context. Much of the contemporary sociology of religion literature is either large scale analyses of secondary data charting changes in church attendance based on census figures of religious identification, or studies of new religious movements or minority religious groups of various types. In this thesis I argue that, despite the complex and interconnected processes characterizing modern society (such as secularization, pluralism, post-modernism, detraditionalization, deinstitutionalization of religious belief, consumer oriented religious preference and fundamentalism), the reason these four rural parishes have undergone a process of re-invigoration and, each in their own context, have a sustainable future is a combination of both theological and social factors. I describe how, in contrast to their neighbouring parishes which share similar demographic and socio-economic contexts, these four parishes have experienced the longest period of sustained health and stability in their recent history. I would suggest that this is because, in each instance, becoming an Enabler Supported Ministry parish is a homologous response of these parishes to their context. That is, they are sociologically apt; and they are theologically apt, too.
Additional file 1 of A pairwise pseudo-likelihood approach for regression analysis of left-truncated failure time data with various types of censoring
Creators: name: Shao, Li
name: Li, Hongxi
name: Li, Shuwei
name: Sun, Jianguo
Publisher: name: figshare
Year: 2023
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 1.
Collapse of the mean curvature flow for equifocal submanifolds
Creators: name: Koike, Naoyuki
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C42

description: In this paper, we investigate the mean curvature flows for an equifocal submanifold in a symmetric space of compact type and its focal submanifolds as initial data. It is known that equifocal submanifolds of codimension greater than one in irreducible symmetric spaces of compact type occur as principal orbits of Hermann actions. However, we investigate the flows conceptionally without use of this fact. Concretely the investigation is performed by investigating the mean curvature flows having the lifts of the submanifolds to an (infinite deiminsional separable) Hilbert space through a Riemannian submersion as initial data.
description: 31pages
Spectroscopic determination of the nuclear moments of bismuth
Creators: name: Shipley, George
Publisher: name: University of British Columbia
Year: 2011

description: The nuclear magnetic moment μ, and the nuclear electrostatic quadrupole moment Q, were determined from the optical hyperfine structures of Bi. The magnetic moment was calculated for 8 configurations and 14 levels. The quadrupole moment was calculated for 4 configurations and 6 levels. The values of μ that were obtained from one-electron spectra showed good agreement with more precise resonance measurements. The agreement for Q was not quite so good. Good measurements were made for the 5d⁹ 6p configuration, but there is no readily available theory from which to calculate Q for this configuration. The light source used in this investigation was a "condensed" electrodeless discharge, and the spectrograms were taken on a 9.1 metre concave grating spectrograph. Q was found to be -.5(1) barns. Using values of μ that employed information from one-electron spectra, μ was found to be 4.1(1) nuclear magnetons.
Identification and Filtering of Uncharacteristic Noise in the CMS Hadron Calorimeter
Creators: name: The CMS Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Commissioning studies of the CMS hadron calorimeter have identified sporadic uncharacteristic noise and a small number of malfunctioning calorimeter channels. Algorithms have been developed to identify and address these problems in the data. The methods have been tested on cosmic ray muon data, calorimeter noise data, and single beam data collected with CMS in 2008. The noise rejection algorithms can be applied to LHC collision data at the trigger level or in the offline analysis. The application of the algorithms at the trigger level is shown to remove 90% of noise events with fake missing transverse energy above 100 GeV, which is sufficient for the CMS physics trigger operation.
A generalized Kramers-Kronig transform for Casimir effect computations
Creators: name: Bimonte, Giuseppe
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent advances in experimental techniques now permit to measure the Casimir force with unprecedented precision. In order to achieve a comparable precision in the theoretical prediction of the force, it is necessary to accurately determine the electric permittivity of the materials constituting the plates along the imaginary frequency axis. The latter quantity is not directly accessible to experiments, but it can be determined via dispersion relations from experimental optical data. In the experimentally important case of conductors, however, a serious drawback of the standard dispersion relations commonly used for this purpose, is their strong dependence on the chosen low-frequency extrapolation of the experimental optical data, which introduces a significant and not easily controllable uncertainty in the result. In this paper we show that a simple modification of the standard dispersion relations, involving suitable analytic window functions, resolves this difficulty, making it possible to reliably determine the electric permittivity at imaginary frequencies solely using experimental optical data in the frequency interval where they are available, without any need of uncontrolled data extrapolations.
description: 10 pages, 6 encapsulated figures. A few typos corrected, some references added. The new version matches the one accepted for publication on Phys. Rev. A
Investigating COBIT for information technology audit in the Tasmanian public sector
Creators: name: Gerke, L
Publisher: name: University Of Tasmania
Year: 2023

description: There has been worldwide interest in corporate governance because of the high profile corporate collapses of the early 2000s. The use of control frameworks has been mandated in the United States of America through the Sarbanes Oxley Act of 2002. One of the popular frameworks adopted is the Control Objectives for Information and Related Technologies (CoBIT). Organisations have shown an increasing interest in using COBiT both as an IT governance framework and also for IT audit because of its focus on the alignment of business and IT goals and processes. The COBiT framework is massive, so there is a need for research to determine the most important IT processes in public sector organisations in order to reduce the number of audit areas included in an abbreviated COBiT IT audit instrument while retaining relevance. There is a large body of published work available for COBiT, however, much of this has originated within the domain of the practitioner and is aimed at a similar readership, with little, if any, academic research that has considered the effectiveness of the framework. Prior research has been conducted in the national and international arenas, but it is unclear if this can be extended to the Tasmanian public sector. This research used a survey methodology to obtain ratings from selected Tasmanian public sector organisations for each of the high level IT control objectives in the COBiT framework. These ratings were compiled to form a ranked list of the most important IT processes for the Tasmanian public sector. Audit measures were selected for the key IT processes, then validated by a senior public sector IT audit professional and the instrument subsequently trialled on a range of Tasmanian public sector organisations. An evaluation of the IT audit process using COBiT was also undertaken. The instrument developed contained seven IT control objectives and was successfully trialled in nine public sector organisations of all possible levels. The results obtained indicated that Tasmanian public sector organisations perceived ensuring security of their systems to be the most important IT process. Of the seven it control objectives audited, five were also considered important in national and international studies. The results obtained suggests that use of the COBiT -derived instrument for public sector IT audit provided a insight into the IT governance and control within these organisations as well as indicating the degree to which the goals and governance of the organisation and the organisation were aligned, neither of which was available with the use of the previous instrument. The use of COBrf for IT audit in this case was considered to be effective and provides some validation in one public sector context of the extensive use of COBIT by practitioners.
Consistency Conditions on S-Matrix of Spin 1 Massless Particles
Creators: name: He, Song
name: Zhang, Hongbao
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by new techniques in the computation of scattering amplitudes of massless particles in four dimensions, like BCFW recursion relations, the question of how much structure of the S-matrix can be determined from purely S-matrix arguments has received new attention. The BCFW recursion relations for massless particles of spin 1 and 2 imply that the whole tree-level S-matrix can be determined in terms of three-particle amplitudes (evaluated at complex momenta). However, the known proofs of the validity of the relations rely on the Lagrangian of the theory, either by using Feynman diagrams explicitly or by studying the effective theory at large complex momenta. This means that a purely S-matrix theoretic proof of the relations is still missing. The aim of this paper is to provide such a proof for spin 1 particles by extending the four-particle test introduced by P. Benincasa and F. Cachazo in arXiv:0705.4305[hep-th] to all particles. We show how n-particle tests imply that the rational function built from the BCFW recursion relations possesses all the correct factorization channels including holomorphic and anti-holomorphic collinear limits. This in turn implies that they give the correct S-matrix of the theory.
description: 24 pages, 4 figures
Chaotic motion at the emergence of the time averaged energy decay
Creators: name: Manchein, Cesar
name: Rosa, Jane
name: Beims, Marcus W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A system plus environment conservative model is used to characterize the nonlinear dynamics when the time averaged energy for the system particle starts to decay. The system particle dynamics is regular for low values of the $N$ environment oscillators and becomes chaotic in the interval $13\le N\le15$, where the system time averaged energy starts to decay. To characterize the nonlinear motion we estimate the Lyapunov exponent (LE), determine the power spectrum and the Kaplan-Yorke dimension. For much larger values of $N$ the energy of the system particle is completely transferred to the environment and the corresponding LEs decrease. Numerical evidences show the connection between the variations of the {\it amplitude} of the particles energy time oscillation with the time averaged energy decay and trapped trajectories.
description: 18 pages and 10 figures
Can the Known Millisecond Pulsars Help in the Detection of Intermediate-Mass Black Holes at the Centers of Globular Clusters?
Creators: name: Larchenkova, T. I.
name: Lutovinov, A. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We consider the possibility of detecting intermediate-mass ($10^3-10^4 M_{\odot}$) black holes, whose existence at the centers of globular clusters is expected from optical and infrared observations, using precise pulse arrival timing for the millisecond pulsars in globular clusters known to date. For some of these pulsars closest to the cluster centers, we have calculated the expected delay times of pulses as they pass in the gravitational field of the central black hole. The detection of such a time delay by currently available instruments for the known pulsars is shown to be impossible at a black hole mass of $10^3 M_{\odot}$ and very problematic at a black hole mass of $10^4 M_{\odot}$. In addition, the signal delay will have a negligible effect on the pulsar periods and their first derivatives compared to the current accuracy of their measurements.
description: 13 pages, 3 figures, will be published in the Astronomy Letters, 2009, 35, pp.235-240
Topological phases of dipolar particles in elongated Wannier orbitals
Creators: name: Sun, Kai
name: Zhao, Erhai
name: Liu, W. Vincent
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that topological phases with fractional excitations can occur in two-dimensional ultracold dipolar gases on a particular class of optical lattices. Due to the dipolar interaction and lattice confinement, a quantum dimer model emerges naturally as the effective theory describing the low-energy behaviors of these systems under well-controlled approximations. The desired hierarchy of interaction energy scales is achieved by controlling the anisotropy of the orbital dimers and the dipole moments of the particles. Experimental realization and detection of various phases are discussed, as well as the possible relevance for quantum computation.
description: 5 pages, 3 figures; added references, corrected typos
title: Metal‐Mediated Protein Engineering within Live Cells
Creators: name: Ghosh, Pritam
Publisher: name: Humboldt-Universität zu Berlin
Year: 2024
Subjects: subject: Metal
subject: Protein
subject: Bio-orthogonal
subject: Chemical Biology
subject: 540 Chemie und zugeordnete Wissenschaften
subject: 660 Chemische Verfahrenstechnik und verwandte Technologien

description: Metal mediated several organic reactions are known which can be used inside the cellular medium for protein modifications, eventually for targeting diseases. Indeed, due to their ease of handling, rapid solubility, and effective cell penetration, metals are superior than any other competitor as a stimulus/mediator in organic reactions relevant with protein modifications. Metal mediated most effective reactions as a chemical biology tool are Cu(I)‐catalyzed azide‐alkyne cycloaddition(CuAAC)/click reactions or Pd mediated multiple chemical reactions for intra/extra cellular protein modifications etc. A few examples of Au(III), Ru(III) are also known. Among these, the click reaction has high potential for the management of biomolecules within cells, and thus this methodology is adopted broadly in chemistry, biology towards therapeutic applications in pharmacology. Fast kinetics in aqueous medium at ambient to normal temperature with specificity between precursors (e. g., azide and alkyne for click reactions which are bio‐orthogonal to cells) are essential aspects behind the success of metal mediated intracellular reactions. This review dealt with specifically metal mediated protein modifications within live cells, the achievements and challenges.
Commissioning of the CMS High-Level Trigger with Cosmic Rays
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The CMS High-Level Trigger (HLT) is responsible for ensuring that data samples with potentially interesting events are recorded with high efficiency and good quality. This paper gives an overview of the HLT and focuses on its commissioning using cosmic rays. The selection of triggers that were deployed is presented and the online grouping of triggered events into streams and primary datasets is discussed. Tools for online and offline data quality monitoring for the HLT are described, and the operational performance of the muon HLT algorithms is reviewed. The average time taken for the HLT selection and its dependence on detector and operating conditions are presented. The HLT performed reliably and helped provide a large dataset. This dataset has proven to be invaluable for understanding the performance of the trigger and the CMS experiment as a whole.
Power Asymmetries in the Cosmic Microwave Background Temperature and Polarization patterns
Creators: name: Paci, F.
name: Gruppuso, A.
name: Finelli, F.
name: Cabella, P.
name: De Rosa, A.
name: Mandolesi, N.
name: Natoli, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We test the asymmetry of the Cosmic Microwave Background anisotropy jointly in temperature and polarization. We study the hemispherical asymmetry, previously found only in the temperature field, with respect to the axis identified by Hansen et al. (2009). To this extent, we make use of the low resolution WMAP 5 year temperature and polarization Nside=16 maps and the optimal angular power spectrum estimator BolPol (Gruppuso et al. 2009). We consider two simple estimators for the power asymmetry and we compare our findings with Monte Carlo simulations which take into account the full noise covariance matrix. We confirm an excess of power in temperature angular power spectrum in the Southern hemisphere at a significant level, between 3 sigma and 4 sigma depending on the exact range of multipoles considered. We do not find significant power asymmetry in the gradient (curl) component EE (BB) of polarized angular spectra. Also cross-correlation power spectra, i.e. TE, TB, EB, show no significant hemispherical asymmetry. We also show that the Cold Spot found by Vielva et al. (2004) in the Southern Galactic hemisphere does not alter the significance of the hemispherical asymmetries on multipoles which can be probed by maps at resolution Nside=16. Although the origin of the hemispherical asymmetry in temperature remains unclear, the study of the polarization patter could add useful information on its explanation. We therefore forecast by Monte Carlo the Planck capabilities in probing polarization asymmetries.
description: 6 pages, 7 figures
Simple finite group schemes and their infinitesimal deformations
Creators: name: Viviani, Filippo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 14L15, 17B70, 20D05, 17B50, 17B56

description: We show that the classification of simple finite group schemes over an algebraically closed field reduces to the classification of abstract simple finite groups and of simple restricted Lie algebras in positive characteristic. Both these two simple objects have been classified. We review this classification. Finally, we address the problem of determining the infinitesimal deformations of simple finite group schemes.
description: 11 pages, survey paper. Final version, to appear on Rend. Sem. Mat. Univ. Pol. Torino
Constance Shabazz Interview
Creators: name: Institute Of Diversity And Civic Life
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Religions Texas
Austin, TX
Autobiography of Malcolm X
Nation of Islam
African American
MeToo movement
Activist
Education
Civil Rights
Chicago
Healthcare injustice
Sickle Cell Foundation
Social Justice
Welfare
Muslim Woman Identity
Segregation
Baby boomer

description: This interview is with Constance Shabazz, a social activist, feminist, and speaker from Chicago. After learning about the health care disparities and injustice faced by the African American community during her time working for the Sickle Cell Foundation in New York, Constance decided to become a physician and advocate for others. Constance talks about how reading the Autobiography of Malcolm X helped align her spiritual beliefs with Islam and informed her opinions on providing free health care for all. Constance moved to Texas in 2016 and continues to organize around community needs.