cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Delayed Southern Hemisphere Climate Change Induced by Stratospheric Ozone Recovery, as Projected by the CMIP5 Models
Creators: name: Barnes, Elizabeth A.
name: Barnes, Nicholas W.
name: Polvani, Lorenzo M.
Publisher: name: Columbia University
Year: 2014
Subjects: Ozone layer depletion
Climatic changes
Southern Hemisphere
Greenhouse gases
Tropospheric circulation
Climatic changes--Forecasting
Atmosphere
Meteorology

description: Stratospheric ozone is expected to recover by the end of this century because of the regulation of ozone-depleting substances by the Montreal Protocol. Targeted modeling studies have suggested that the climate response to ozone recovery will greatly oppose the climate response to rising greenhouse gas (GHG) emissions. However, the extent of this cancellation remains unclear since only a few such studies are available. Here, a much larger set of simulations performed for phase 5 of the Coupled Model Intercomparison Project is analyzed, which includes ozone recovery. It is shown that the closing of the ozone hole will cause a delay in summertime [December–February (DJF)] Southern Hemisphere climate change between now and 2045. Specifically, it is found that the position of the jet stream, the width of the subtropical dry zones, the seasonality of surface temperatures, and sea ice concentrations all exhibit significantly reduced summertime trends over the first half of the twenty-first century as a consequence of ozone recovery. After 2045, forcing from GHG emissions begins to dominate the climate response. Finally, comparing the relative influences of future GHG emissions and historic ozone depletion, it is found that the simulated DJF tropospheric circulation changes between 1965 and 2005 (driven primarily by ozone depletion) are larger than the projected changes in any future scenario over the entire twenty-first century.
Entity Explosion
Creators: name: Hudson, Toby
Publisher: name: Zenodo
Year: 2021
Subjects: browser extension
identifiers
Wikidata

description: Wikidata is great for asking weird questions like "Who is the most famous child of a librarian?" (the answer will surprise you). But what use are all the external identifiers that make up 90% of the database? I'll show you how to use them to navigate the web.
 Say you're on a webpage about a particular thing ("entity"). Click on the browser extension Entity Explosion to get information about that entity (from the URL alone!), and an explosion of links to other sites about that same entity. The data provided is sourced live from Wikidata - the Rosetta Stone of the internet - and can be retrieved in any language.
 We'll browse around some topics of your choice, to see how powerful you can be with a pinch of Wikidata added to your browser.
The Antarctic Atmospheric Energy Budget. Part I: Climatology and Intraseasonal-to-Interannual Variability
Creators: name: Previdi, Michael
name: Smith, Karen L.
name: Polvani, Lorenzo M.
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Atmosphere
subject: Meteorology
subject: Mathematics
subject: FOS: Mathematics

description: The authors present a new, observationally based estimate of the atmospheric energy budget for the Antarctic polar cap (the region poleward of 70°S). This energy budget is constructed using state-of-the-art reanalysis products from ECMWF [the ECMWF Interim Re-Analysis (ERA-Interim)] and Clouds and the Earth's Radiant Energy System (CERES) top-of-atmosphere (TOA) radiative fluxes for the period 2001–10. The climatological mean Antarctic energy budget is characterized by an approximate balance between the TOA net outgoing radiation and the horizontal convergence of atmospheric energy transport, with the net surface energy flux and atmospheric energy storage generally being small in comparison. Variability in the energy budget on intraseasonal-to-interannual time scales bears a strong signature of the southern annular mode (SAM), with El Niño–Southern Oscillation (ENSO) having a smaller impact. The energy budget framework is shown to be a useful alternative to the SAM for interpreting surface climate variability in the Antarctic region.
Towards active microfluidics: Interface turbulence in thin liquid films with floating molecular machines
Creators: name: Alonso, Sergio
name: Mikhailov, Alexander S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Thin liquid films with floating active protein machines are considered. Cyclic mechanical motions within the machines, representing microscopic swimmers, lead to molecular propulsion forces applied to the air-liquid interface. We show that, when the rate of energy supply to the machines exceeds a threshold, the flat interface becomes linearly unstable. As the result of this instability, the regime of interface turbulence, characterized by irregular traveling waves and propagating machine clusters, is established. Numerical investigations of this nonlinear regime are performed. Conditions for the experimental observation of the instability are discussed.
description: 9 pages, 8 figures, RevTeX, submitted to Physical Review E
Microwave holography of large reflector antennas
Creators: name: James, GC
Publisher: name: University Of Tasmania
Year: 2023

description: This thesis describes experiments in Microwave Holography using the 26 m radio telescope at the Mount Pleasant Observatory, and the development of data processing methods to overcome a major limitation of traditional holographic measurements. Microwave Holography is a fast and effective technique for measuring the surface profile of reflector antennas. It requires measurement of the amplitude and phase of the antenna's far field radiation pattern. The Fourier transform relationship of the far field pattern to the aperture current function is used to estimate the aperture phase profile, which can be related directly to the surface profile. Using an unmodulated 12.7 GHz carrier signal transmitted by the AUSSAT-1 geostationary satellite, the 26 m diameter surface was measured to an accuracy of ¬¨¬±53 ˜í¬¿m with a resolution of 0.6 m. Using a beacon signal, weaker by 20 dB, gave a comparable accuracy of ¬¨¬±64 ˜í¬¿m. Each map took about 4 hours to record. In practice only a small part of the complete radiation pattern can be measured, so information about high spatial frequencies in the aperture is lost. This causes detailed structure in the surface error map to be smoothed out. Most large reflectors are constructed with panels, and misaligned panels give discontinuities in surface error which cannot be resolved. This can lead to incorrect assessment of panel positions. Significant improvement can be obtained by recognizing at the outset that the reflector surface is not smooth and continuous, but a collection of individual rigid panels. The Method of Successive Projections is an algorithm, with a simple geometrical interpretation, which allows information about the panel boundaries to be readily incorporated into the data reduction process. The algorithm is straight-forward to apply and is very flexible: aperture blockage effects do not disturb its operation, and panel distortions can be included in the analysis with minimal extra effort. Good results may be achieved while minimizing measurement time. This is an important consideration for high-performance antennas with a busy operating programme.
Photonic Crystal Cavities in Silicon Dioxide
Creators: name: Gong, Yiyang
name: Vuckovic, Jelena
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: One dimensional nano-beam photonic crystal cavities fabricated in silicon dioxide are considered in both simulation and experiment. Quality factors of over 10^4 are found via simulation, while quality factors of over 5*10^3 are found in experiment, for cavities with mode volumes of 2.0 cubic wavelengths (in oxide) and in the visible wavelength range (600-716nm). The dependences of the cavity quality factor and mode volume for different design parameters are also considered.
description: 4 pages, 3 figures
Semiparametric Ultra-High Dimensional Model Averaging of Nonlinear Dynamic Time Series
Creators: name: Chen, Jia
name: Li, Degui
name: Linton, Oliver
name: Lu, Zudi
Publisher: name: Taylor & Francis
Year: 2017
Subjects: Medicine
Neuroscience
Biotechnology
Mathematical Sciences not elsewhere classified
Computational Biology

description: We propose two semiparametric model averaging schemes for nonlinear dynamic time series regression models with a very large number of covariates including exogenous regressors and auto-regressive lags. Our objective is to obtain more accurate estimates and forecasts of time series by using a large number of conditioning variables in a nonparametric way. In the first scheme, we introduce a kernel sure independence screening (KSIS) technique to screen out the regressors whose marginal regression (or autoregression) functions do not make a significant contribution to estimating the joint multivariate regression function; we then propose a semiparametric penalized method of model averaging marginal regression (MAMAR) for the regressors and auto-regressors that survive the screening procedure, to further select the regressors that have significant effects on estimating the multivariate regression function and predicting the future values of the response variable. In the second scheme, we impose an approximate factor modeling structure on the ultra-high dimensional exogenous regressors and use the principal component analysis to estimate the latent common factors; we then apply the penalized MAMAR method to select the estimated common factors and the lags of the response variable that are significant. In each of the two schemes, we construct the optimal combination of the significant marginal regression and autoregression functions. Asymptotic properties for these two schemes are derived under some regularity conditions. Numerical studies including both simulation and an empirical application to forecasting inflation are given to illustrate the proposed methodology. Supplementary materials for this article are available online.
An Idealized Prototype for Large-Scale Land–Atmosphere Coupling
Creators: name: Lintner, Benjamin
name: Gentine, Pierre
name: Findell, Kirsten L.
name: D'Andrea, Fabio
name: Sobel, Adam H.
name: Salvucci, Guido D.
Publisher: name: Columbia University
Year: 2013
Subjects: Meteorology
Atmosphere

description: A process-based, semianalytic prototype model for understanding large-scale land–atmosphere coupling is developed here. The metric for quantifying the coupling is the sensitivity of precipitation P to soil moisture W. For a range of prototype parameters typical of conditions found over tropical or summertime continents, the sensitivity measure exhibits a broad minimum at intermediate soil moisture values. This minimum is attributed to a trade-off between evaporation (or evapotranspiration) E and large-scale moisture convergence across the range of soil moisture states. For water-limited, low soil moisture conditions, is dominated by evaporative sensitivity , reflecting high potential evaporation Ep arising from relatively warm surface conditions and a moisture-deficient atmospheric column under dry surface conditions. By contrast, under high soil moisture (or energy limited) conditions, becomes slightly negative as Ep decreases. However, because convergence and precipitation increase strongly with decreasing (drying) moisture advection, while soil moisture slowly saturates, is large. Variation of key parameters is shown to impact the magnitude of, for example, increasing the time scale for deep convective adjustment lowers at a given W, especially on the moist side of the profile where convergence dominates. While the prototype’s applicability for direct quantitative comparison with either observations or models is clearly limited, it nonetheless demonstrates how the complex interplay of surface turbulent and column radiative fluxes, deep convection, and horizontal and vertical moisture transport influences the coupling of the land surface and atmosphere that may be expected to occur in either more realistic models or observations.
Automatic Recommendation System of Multicloud Services | Sistema de recomendación automático de servicios Multi-cloud
Creators: name: López, Mateo Matta
name: Jhan Carlos Diaz Vidal
Publisher: name: figshare
Year: 2021
Subjects: subject: 80503 Networking and Communications
subject: FOS: Computer and information sciences
subject: 100504 Data Communications
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 160503 Communications and Media Policy
subject: FOS: Political science
subject: 100599 Communications Technologies not elsewhere classified
subject: 200101 Communication Studies
subject: FOS: Media and communications
subject: 100510 Wireless Communications
subject: Information Systems
subject: 100503 Computer Communications Networks
subject: 80302 Computer System Architecture

description: In 2020, Cloud Computing is a paradigm of computing that has taken on great relevance worldwide, this paradigm enables access to high-level technological services through the internet to any person or organization that is willing to assume the affordable costs, compared to the costs of this technology in an on-premises infrastructure. This generated a strong market demand which triggered the appearance of many Cloud providers, new concepts also appeared such as Multi-cloud, which consists of using the services of different providers for a single architecture.The Multi-cloud is a paradigm that responds to a set of market needs, mainly the need to have systems independent from providers and the need for highly specialized services to develop systems or applications. This paradigm presents a set of difficulties, such as the high complexity in the development of applications in Multi-cloud environments, added to the constant change of technologies and services by Cloud providers. Considering these difficulties, to generate a solution to this problem, the different types of businesses involved in creating applications that could use Multi-cloud were analyzed and characterized.Additionally, the types of applications that work within the Cloud Computing and Multi-cloud paradigm were characterized to obtain their properties and match them with some frameworks for the correct implementation of an application in a Cloud context. As a result, a set of fundamental characteristics were obtained to compare the Cloud services of different providers and recommend the best services depending directly on the characteristics of the user.
Atomic scale characterization of deformation induced interfacial mixing in a Cu/V nanocomposite wire
Creators: name: Sauvage, Xavier
name: Genevois, Cécile
name: Da Costa, Gérald
name: Pantsyrny, Viktor
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The microstructure of a Cu/V nanocomposite wire processed by cold drawing was investigated by high resolution transmission electron microscopy and atom probe tomography. The experimental data clearly reveal some deformation induced interfacial mixing where the vanadium filaments are nanoscaled. The mixed layer is a 2nm wide vanadium gradient in the fcc Cu phase. This mechanical mixing leads to the local fragmentation and dissolution of the filaments and to the formation of vanadium super saturated solid solutions in fcc Cu.
Contextual Mobile Learning Strongly Related to Industrial Activities: Principles and Case Study
Creators: name: David, Bertrand
name: Yin, Chuantao
name: Chalon, René
Publisher: name: arXiv
Year: 2010
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5

description: M-learning (mobile learning) can take various forms. We are interested in contextualized M-learning, i.e. the training related to the situation physically or logically localized. Contextualization and pervasivity are important aspects of our approach. We propose in particular MOCOCO principles (Mobility - COntextualisation - COoperation) using IMERA platform (Mobile Interaction in the Augmented Real Environment). We are studying various mobile learning contexts related to professional activities, in order to master appliances (Installation, Use, Breakdown diagnostic and Repairing). Contextualization, traceability and checking of execution of prescribed operations are based mainly on the use of RFID labels. Investigation of the appropriate training methods for this kind of learning situation, applying mainly a constructivist approach known as "Just-in-time learning", "learning by doing", "learning and doing", constitutes an important topic of this project. From an organizational point of view we are in perfect symbiosis with EPSS - Electronic Performance Support System [12] and our objective is to integrate learning in professional activities in three ways: 1/ before work i.e. to learn about coming actions, 2/ after work i.e. to learn about past actions to understand what happened and accumulate experience, 3/ during work i.e. to master the problem just-in-time
Are Recent Arctic Ozone Losses Caused by Increasing Greenhouse Gases?
Creators: name: Rieder, Harald
name: Polvani, Lorenzo M.
Publisher: name: Columbia University
Year: 2013
Subjects: Atmosphere
Meteorology
Climatic changes

description: It has been suggested that the Arctic ozone losses observed in recent years might be a manifestation of climate change due to increasing greenhouse gases. We here offer evidence to the contrary, by focusing on the volume of polar stratospheric clouds (Vpsc), a convenient proxy for polar ozone loss whose simplicity allows for easily reproducible results. First, we analyze the time series of Vpsc in three reanalysis data sets and find no statistically significant trends in Vpsc–nor changes in their probability density functions–over the period 1979–2011. Second, we analyze Vpsc in a stratosphere-resolving chemistry-climate model forced uniquely with increasing greenhouse gases following the A1B scenario: here too, we find no significant changes in Vpsc over the entire 21st century. Taken together, these results strongly suggest that the sporadic high ozone losses in recent years have not been caused by increasing greenhouse gases.
‘The Long, Continued Dry’: Themes of the Federation Drought in Australian Regional Newspapers
Creators: name: Twigg, Karen
name: Zion, Lawrie
name: Ashcroft, L
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 4701
subject: Communication and media studies
classificationCode: 4303
subject: Historical studies

description: Droughts are a canonical feature of Australian history and climate, and Australia’s paleoclimate and colonial past is dotted with extended periods of low rainfall. The Federation Drought was one such period. The result of a series of El Niño events, it parched much of Australia between 1895 and 1903 and remains one of the most significant and prolonged periods of rainfall deficiency since European colonisation. It also coincided with, and fuelled, a substantial increase in press coverage of the weather. In this article we examine reportage of the Federation Drought through two newspapers from the Victorian city of Bendigo: The Bendigo Advertiser and The Bendigo Independent. We identify themes that have persisted in drought coverage to the present day, highlighting the role the press has played in shaping how communities and policy makers have understood and managed the extremities of Australia’s climate. We also offer insights into the evolution of current drought reportage and the perspectives it enables or silences.
Explicit TE/TM Scheme for Particle Beam Simulations
Creators: name: Dohlus, M.
name: Zagorodnov, I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: In this paper we propose an explicit two-level conservative scheme based on a TE/TM like splitting of the field components in time. Its dispersion properties are adjusted to accelerator problems. It is simpler and faster than the implicit version [1]. It does not have dispersion in the longitudinal direction and the dispersion properties in the transversal plane are improved. The explicit character of the new scheme allows a uniformly stable conformal method without iterations and the scheme can be parallelized easily. It assures energy and charge conservation. A version of this explicit scheme for rotationally symmetric structures is free from the progressive time step reducing for higher order azimuthal modes as it takes place for Yee's explicit method used in the most popular electrodynamics codes.
description: 15 pages, 6 figures
The Christian Brothers in Tasmania : a portrait, 1911-1988
Creators: name: McManus, ST
Publisher: name: University Of Tasmania
Year: 2023

description: This thesis seeks to paint a portrait of the members of the communities of Christian Brothers who taught and worked in Tasmania from 1911-1988. It examines some aspects of the Brothers: their backgrounds, their style of community life in Tasmania, their studies and their relationships with the official Catholic Church. It does not examine their work as educators, nor their schools. This has been partially done by others, James Brophy in his history, St. Patrick's College, Launceston, 1919-1991 and Tim Jetson, St. Virgil's College, 1911-1994. The sources used for this thesis have almost entirely been of Christian Brothers' origin. These have been biographies of Brothers, Annals of the Brothers' Houses, a diary of a Brother in Launceston, letters in the Brothers' Archives in Perky'Ile and Balmain (formerly at Strathfield, NSW) as well as some secondary sources written by Brothers about different aspects of their life in Australia. The use of such sources exclusively has its limitations. The view is always from the \inside.\" These sources are often sanitised and written knowing that some of the people involved will be reading the material. Thus there is a lack of critical comment a tendency to state facts rather than causes or reasons and a lack of mention of controversy failure or other unsavoury aspects of life in the Brothers in Tasmania. It is therefore sometimes difficult to be objective about the Brothers or to view them from the \"outside\". At the same time the very personal responses are also missing. To some extent this thesis includes the personal element conveyed through interviews with Brothers who taught in Tasmania and who are still alive. Despite these limitations there is still an abundance of material to enable us to explore the Brothers' life in Tasmania over three quarters of a century. Because the Brothers were not isolated in Tasmania but came from and went back to other Australian states we are virtually examining the typical experience of Christian Brothers in most parts of Australia during the Twentieth Century."
title: The Rise of Utility Wood Pellet Energy in the Era of Climate Change
Creators: name: Ireland, Robert
Publisher: name: United States International Trade Commission
publisherIdentifier: https://ror.org/05hsggr76
publisherIdentifierScheme: ROR
Year: 2022

description: Utility wood pellets (wood pellets) are a densified biomass fuel that can generate electricity or heating
when burned. Production, consumption, and trade of wood pellets have grown substantially since the
late 2000s in a small number of countries. The locus of consumption growth is industrial power plants
where wood pellets are frequently used for co-firing with, or replacement of, coal. The catalytic factors
for the robust wood pellet expansion have been European Union (EU) climate change policies and
incentives, particularly designating the product as a ‘renewable energy,’ assessing their carbon
emissions as zero, and providing financial support. The United States, with its sizeable forests and
timber plantations, reacted by intensifying wood pellet production for export, primarily to the United
Kingdom and several EU member states. In 2021, U.S. wood pellet exports reached $1 billion for the first
time. Wood pellet consumption is also rising in Asia with South Korea and Japan, driven by their own
climate change policies, incentivizing rapid recent growth in imports. This paper examines the rise of
wood pellets as an alternative energy source and traded commodity in the era of climate change.
Attractive energy and entropy or particle size: the yin and yang of physical and biological science
Creators: name: Henderson, Douglas
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: It is well known that equilibrium in a thermodynamic system results from a competition or balance between lowering the energy and increasing the entropy, or at least the product of the temperature and entropy. This is remarkably similar to the Taoist concept of yin, a downward influence, and yang, an upward influence, where harmony is established by balancing yin and yang. Entropy is due to structure, which is largely determined by core repulsions or particle size whereas energy is largely determined by longer range attractive interactions. Here, this balance between energy and entropy or particle size is traced through the theory of simple fluids, beginning with Andrews and van der Waals, the subsequent developments of perturbation theory, theories of correlation functions that are based on the Ornstein-Zernike relation and the mean spherical approximation, electrolytes, and recent work on ion channels in biological membranes, where the competition between energy and size gives an intuitively attractive explanation of the selectivity of cation channels. Simulations of complex systems, including proteins in aqueous solution, should be studied to determine the extent to which these concepts are useful for such situations
description: Douglas Henderson, Professor of Chemistry, Brigham Young University, asked Bob Eisenberg, Rush University Medical Center, to upload this paper to the arXiv for him. The journal has given permission for this upload
Equatorial Upwelling Enhances Nitrogen Fixation in the Atlantic Ocean
Creators: name: Subramaniam, Ajit
name: Mahaffey, Claire
name: Johns, William
name: Mahowald, Natalie
Publisher: name: Columbia University
Year: 2013
Subjects: Upwelling (Oceanography)
Nitrogen--Fixation
Chemical oceanography

description: Surface waters in upwelling regions are thought to be nutrient rich and hence inhibit nitrogen fixation (diazotrophy) because diazotrophs can preferentially assimilate nitrate and ammonia instead of expending energy to fix dinitrogen. We found average nitrogen fixation rates to be two to seven times higher in the surface waters of the upwelling region of the eastern equatorial Atlantic than typically measured here during non-upwelling periods. We posit that in this region, low nitrate-phosphate ratio waters are upwelled, and an initial bloom of non-diazotrophic phytoplankton removes recently upwelled nitrate. Thereby, diazotrophy is fuelled by residual phosphate and by a combination of aeolian and upwelled sources of iron. Annually, we estimate that approximately 47 Gmol of new nitrogen is introduced by diazotrophy in upwelled waters alone and 195 Gmol N is fixed in the equatorial Atlantic region. Our findings challenge the paradigm that the highest nitrogen fixation rates occur in oligotrophic gyres and instead provide evidence of its importance in upwelling regimes where phosphate- and iron-rich waters rich are upwelled.
title: Buried in the mix: touring sound technicians, sonic control, and emotional labour on Cirque du Soleil's Corteo
Creators: name: Danson Faraday, Jacob
Publisher: name: Memorial University of Newfoundland
Year: 2021

description: This dissertation investigates the lives and labour of the sound technicians who work on Cirque du Soleil’s arena show Corteo, a large-scale, highly structured, corporate touring production. On Corteo, the sound technicians are charged with the faithful recreation of Cirque du Soleil’s proprietary sonic product, including the music, sound effects, and character dialogue, as established by the director, composers, sound designer, and other senior members of the creative hierarchy. The sound technicians manage the constant variations in musical performances and venue acoustics, interventions that should be largely invisible and inaudible. They also manage the feelings of the musicians and each other by engaging in diverse modes of emotional labour. Different groups—sound technicians, musicians, acrobats, and audiences—listen to the show in an ever-shifting, holistic way. The people in these groups understand that the sounds they make during a performance—with instruments and speakers or with laughter and applause—are integral to the show. Sound in the arena becomes an affective web of sources to which each group simultaneously listens and contributes. Sound technicians are sensitive to emotion and affect, and this sensitivity is part of the job. I show that the sound technician’s technical work, emotional labour, and affective sensitivity are vital to the sound design, despite being ‘buried in the mix.’ Corteo’s mode of touring evinces the underlying privilege and power of even low-level employees like sound technicians, as well as Cirque du Soleil’s broader capitalistic priorities and labour practices. Through the case study of Corteo, this dissertation contributes to a growing body of literature that demonstrates that workers at any level in a corporate hierarchy make essential contributions to a final product, even if their labour is obscured by neoliberal logics. Grounded in ethnographic methods and informed by the author’s own experience as a Cirque du Soleil sound technician, this research includes participant observation and interviews with sound technicians, musicians, creative production staff, and audiences.
Psychological adjustment and systemic lupus erythematosus : a comparative study
Creators: name: Hornsby, H
Publisher: name: University Of Tasmania
Year: 2023

description: Systemic lupus erythematosus (SLE) is a chronic inflammatory disease of unknown etiology. Its affects multiple organ systems and is characterised by periods of disease activity and remission. The unpredictable course, treatment and symptomatology of SLE can impact upon the social and personal resources of sufferers. Social resources are those variables influenced by external events, they include stress, uplifts, social support and social networks. Personal resources are mediated more by individuals' perceptions and include self‚ÄövÑvÆefficacy and coping (problem‚ÄövÑvÆ and emotion‚ÄövÑvÆfocused). Deteriorations in social and personal resources accompanying chronic illness suggest a Disease Exacerbation Model. This model proposes that the course of chronic illness is mediated by decrements in social and personal resources which, in turn, influence disease outcomes such as physical disability, psychosocial disruption and psychological distress. The present investigation used a comparative design to test the Disease Exacerbation Model. The participants in the study were 34 individuals with a diagnosis of SLE, 37 multiple sclerosis (MS) sufferers and 38 people without a history of chronic illness. The control group was matched to the chronic illness groups for age, marital status, gender and socioeconomic status. Data were collected by using standardised psychological questionnaires. These included measures of stress, hassles, social network, social support, self-efficacy, coping, psychological distress, physical disability and psychosocial disruption. Individuals with SLE and a chronic illness comparison group (MS) reported significantly fewer uplifts, less social support, more emotion‚ÄövÑvÆfocused coping, as well as greater disability, distress and psychological disruption when compared with healthy people. There were, however, no significant decrements in network size or problem‚ÄövÑvÆfocused coping and no significant increases in hassles. Except for the MS group reporting significantly more disability than SLE sufferers, no other differences were evident between the chronic illness groups. The correlations between social, personal and disease outcome measures suggest that group differences may involve somewhat different underlying processes. For example, social support mediated psychological distress for SLE sufferers, but not for the MS group. To determine which social and personal resource variables are most salient to disease outcome, stepwise multiple regression analyses were performed. For SLE sufferers, increasing hassles and fewer uplifts were associated with elevated psychological distress. Although higher hassle levels and decreasing social support were both correlated with more psychosocial disruption, in the stepwise regression only hassles significantly predicted this disease outcome. Physical disability levels were not significantly related to any social or personal resource measures.
Magnetization plateaux in an extended Shastry-Sutherland model
Creators: name: Schmidt, K. P.
name: Dorier, J.
name: Mila, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study an extended two-dimensional Shastry-Sutherland model in a magnetic field where besides the usual Heisenberg exchanges of the Shastry-Sutherland model two additional SU(2) invariant couplings are included. Perturbative continous unitary transformations are used to determine the leading order effects of the additional couplings on the pure hopping and on the long-range interactions between the triplons which are the most relevant terms for small magnetization. We then compare the energy of various magnetization plateaux in the classical limit and we discuss the implications for the two-dimensional quantum magnet SrCu$_2$(BO$_3$)$_2$.
description: 8 pages, Proceedings of the HFM2008 Conference
An Efficient Spectral Dynamical Core for Distributed Memory Computers
Creators: name: Rivier, L.
name: Loft, R.
name: Polvani, Lorenzo M.
Publisher: name: Columbia University
Year: 2002
Subjects: Atmosphere
Computer science
System theory

description: The practical question of whether the classical spectral transform method, widely used in atmospheric modeling, can be efficiently implemented on inexpensive commodity clusters is addressed. Typically, such clusters have limited cache and memory sizes. To demonstrate that these limitations can be overcome, the authors have built a spherical general circulation model dynamical core, called BOB (“Built on Beowulf”), which can solve either the shallow water equations or the atmospheric primitive equations in pressure coordinates. That BOB is targeted for computing at high resolution on modestly sized and priced commodity clusters is reflected in four areas of its design. First, the associated Legendre polynomials (ALPs) are computed “on the fly” using a stable and accurate recursion relation. Second, an identity is employed that eliminates the storage of the derivatives of the ALPs. Both of these algorithmic choices reduce the memory footprint and memory bandwidth requirements of the spectral transform. Third, a cache-blocked and unrolled Legendre transform achieves a high performance level that resists deterioration as resolution is increased. Finally, the parallel implementation of BOB is transposition-based, employing load-balanced, one-dimensional decompositions in both latitude and wavenumber. A number of standard tests is used to compare BOB's performance to two well-known codes—the Parallel Spectral Transform Shallow Water Model (PSTSWM) and the dynamical core of NCAR's Community Climate Model CCM3. Compared to PSTSWM, BOB shows better timing results, particularly at the higher resolutions where cache effects become important. BOB also shows better performance in its comparison with CCM3's dynamical core. With 16 processors, at a triangular spectral truncation of T85, it is roughly five times faster when computing the solution to the standard Held–Suarez test case, which involves 18 levels in the vertical. BOB also shows a significantly smaller memory footprint in these comparison tests.
Supplementary document for Remote-controlled quantum computing by quantum entanglement - 4925702.pdf
Creators: name: Wang, Dongyang
name: Liu, Yong
name: Ding, Jiangfang
name: xiaogang, qiang
name: Liu, Yingwen
name: Huang, Anqi
name: Fu, Xiang
name: Xu, Ping
name: Deng, Mingtang
name: yang, xuejun
Publisher: name: Optica Publishing Group
Year: 2020
Subjects: Quantum Optics

description: Details of experimental setups, principles, and results.
Pulsar spin-velocity alignment from single and binary neutron star progenitors
Creators: name: Kuranov, A. G.
name: Popov, S. B.
name: Postnov, K. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The role of binary progenitors of neutron stars in the apparent distribution of space velocities and spin-velocity alignment observed in young pulsars is studied. A Monte-Carlo synthesis of pulsar population from single and binary stars with different assumptions about the NS natal kick model (direction distribution, amplitude, and kick reduction in binary progenitors which experienced mass exchange due to Roche lobe overflow with initial masses on the main sequence from the range 8-11 $M_\odot$) is performed. The calculated spin-velocity alignment distributions are compared with observational data obtained from radio polarization measurements. The observed space velocity of pulsars is found to be mostly shaped by the natal kick velocity form and its amplitude; the fraction of binaries is not important here for reasonably large kicks. The distribution of kick direction relative to the spin axis during the formation of a NS is found to affect strongly the spin-velocity correlation of pulsars. Comparison with observed pulsar spin-velocity angles favours a sizeable fraction of binary progenitors and the kick-spin angle $\sim 5-20^\circ$. The form of the initial binary mass ratio distribution does not affect our results.
description: 20 pages, 8 figures; Submitted to MNRAS
On the probabilistic time-dependent axial shortening of tall concrete buildings
Creators: name: Koutsoukis, M
Publisher: name: University Of Tasmania
Year: 2023

description: Tall concrete buildings experience time-dependent axial shortening which may be interpreted as either absolute or differential, the former being with respect to a single column or core element, the latter being with respect to adjacent elements. The types of analyses undertaken to determine axial shortening would normally be deterministic, the rigour being commensurate with the degree of shortening likely to be experienced. Mathematical rigour, however, may or may not be justified in the context of the natural variability of constituent parameters and thus a closer examination of the probabilistic uncertainties associated with axial shortening, particularly for tall buildings, is warranted. Shortening is influenced by, amongst other things, the complex load history of a building during its construction cycle. In this context the properties of concrete are investigated to determine those that are critical to any axial shortening analysis. The work here describes three probabilistic techniques, namely, Monte Carlo simulation, and first- and secondorder moment analyses. Each incorporates random constitutive information in addition to a rigorous procedure for obtaining the representative shortening values. Element behaviour is modelled by the composite models of either Faber, Trost and Bazant, Dischinger or improved Dischinger, combined with the recommendations of the ACI, CEB-FIP, AS-3600 and other sources for describing creep and shrinkage. These models are coupled with the detailed load history of each successive element, based on the construction sequence of the building, and the usual environmental effects, resulting in a procedure capable of analysing fully the axial shortening effects to a high level of detail and with a measured degree of certainty. A software program has been developed to do this analysis. The probabilistic distributions of axial shortening results are subsequently determined using standard goodness of fit tests. With numerous predictive methods available for column behaviour, the author sets out to examine their differences in the context of axial shortening behaviour. An assessment of the sensitivity of each input parameter, in addition to comparisons with other predictive procedures is made. Conclusions follow from these studies. Finally, the probabilistic models are, to a limited extent, compared to field data of column shortenings.
Diagnosis of Farm Power Sources and Mechanization in Major Rice Producing Areas in Ethiopia
Creators: name: Deribe, Yared
name: Solomon, Abiy
name: Getnet, Bisrat
Publisher: name: figshare
Year: 2021
Subjects: subject: 140201 Agricultural Economics
subject: FOS: Economics and business
subject: 99901 Agricultural Engineering
subject: FOS: Other engineering and technologies

description: Rice is a new crop to Ethiopia and substantial production of the crop has been started during the late 1990s. Cognizant of the existing production potential, growing import demand, and prospects for ensuring food security, the number of actors posed due emphasis to enhance the rice value chain. The research aims to document the current farm power uses, farmers’ mechanization needs, and awareness about the application of mechanical power.
Mitigation of 21st Century Antarctic Sea Ice Loss by Stratospheric Ozone Recovery
Creators: name: Smith, Karen L.
name: Polvani, Lorenzo M.
name: Marsh, Daniel R.
Publisher: name: Columbia University
Year: 2012
Subjects: Atmosphere
Climatic changes
Meteorology

description: We investigate the effect of stratospheric ozone recovery on Antarctic sea ice in the next half-century, by comparing two ensembles of integrations of the Whole Atmosphere Community Climate Model, from 2001 to 2065. One ensemble is performed by specifying all forcings as per the Representative Concentration Pathway 4.5; the second ensemble is identical in all respects, except for the surface concentrations of ozone depleting substances, which are held fixed at year 2000 levels, thus preventing stratospheric ozone recovery. Sea ice extent declines in both ensembles, as a consequence of increasing greenhouse gas concentrations. However, we find that sea ice loss is ∼33% greater for the ensemble in which stratospheric ozone recovery does not take place, and that this effect is statistically significant. Our results, which confirm a previous study dealing with ozone depletion, suggest that ozone recovery will substantially mitigate Antarctic sea ice loss in the coming decades.
Charge Carrier Concentration and Temperature Dependent Recombination in Polymer Fullerene Solar Cells
Creators: name: Foertig, A.
name: Baumann, A.
name: Rauh, D.
name: Dyakonov, V.
name: Deibel, C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We performed temperature dependent transient photovoltage and photocurrent measurements on poly(3-hexylthiophene):[6,6]-phenyl-C61 butyric acid methylester bulk heterojuction solar cells. We found a strongly charge carrier concentration and temperature dependent Langevin recombination prefactor. The observed recombination mechanism is discussed in terms of bimolecular recombination. The experimental results were compared with charge carrier extraction by linearly increasing voltage (photo-CELIV) measurements done on the same blend system. We explain the charge carrier dynamics, following an apparent order larger than two, by dynamic trapping of charges in the tail states of the gaussian density of states.
description: 4 pages, 3 figures, 1 table
What stellar populations can tell us about the evolution of the mass-metallicity relation in SDSS galaxies
Creators: name: Asari, N. Vale
name: Stasinska, G.
name: Fernandes, R. Cid
name: Gomes, J. M.
name: Schlickmann, M.
name: Mateus, A.
name: Schoenell, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: During the last three decades, many papers have reported the existence of a luminosity-metallicity or mass-metallicity (M-Z) relation for all kinds of galaxies: The more massive galaxies are also the ones with more metal-rich interstellar medium. We have obtained the mass-metallicity relation at different lookback times for the same set of galaxies from the Sloan Digital Sky Survey (SDSS), using the stellar metallicities estimated with our spectral synthesis code STARLIGHT. Using stellar metallicities has several advantages: We are free of the biases that affect the calibration of nebular metallicities; we can include in our study objects for which the nebular metallicity cannot be measured, such as AGN hosts and passive galaxies; we can probe metallicities at different epochs of a galaxy evolution. We have found that the M-Z relation steepens and spans a wider range in both mass and metallicity at higher redshifts for SDSS galaxies. We also have modeled the time evolution of stellar metallicity with a closed-box chemical evolution model, for galaxies of different types and masses. Our results suggest that the M-Z relation for galaxies with present-day stellar masses down to 10^10 solar masses is mainly driven by the star formation history and not by inflows or outflows.
description: To appear in the proceedings of IAU symposium 262, 'Stellar Populations - Planning for the Next Decade'
Age, allocation and availability of nonstructural carbon in mature red maple trees
Creators: name: Czimczik, Claudia I.
name: Carbone, Mariah S.
name: Keenan, Trevor F.
name: Murakami, Paula F.
name: Pederson, Neil
name: Schaberg, Paul G.
name: Xu, Xiaomei
name: Richardson, Andrew D.
Publisher: name: Columbia University
Year: 2013
Subjects: Botany
Biochemistry

description: The allocation of nonstructural carbon (NSC) to growth, metabolism and storage remains poorly understood, but is critical for the prediction of stress tolerance and mortality. We used the radiocarbon (14C) ‘bomb spike’ as a tracer of substrate and age of carbon in stemwood NSC, CO2 emitted by stems, tree ring cellulose and stump sprouts regenerated following harvesting in mature red maple trees. We addressed the following questions: which factors influence the age of stemwood NSC?; to what extent is stored vs new NSC used for metabolism and growth?; and, is older, stored NSC available for use? The mean age of extracted stemwood NSC was 10 yr. More vigorous trees had both larger and younger stemwood NSC pools. NSC used to support metabolism (stem CO2) was 1–2 yr old in spring before leaves emerged, but reflected current-year photosynthetic products in late summer. The tree ring cellulose 14C age was 0.9 yr older than direct ring counts. Stump sprouts were formed from NSC up to 17 yr old. Thus, younger NSC is preferentially used for growth and day-to-day metabolic demands. More recently stored NSC contributes to annual ring growth and metabolism in the dormant season, yet decade-old and older NSC is accessible for regrowth.