cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Selection system for temperature sensitive mutants in Paramecium aurelia
Creators: name: Baumann, Paul John
Publisher: name: University of British Columbia
Year: 2010

description: Four temperature-sensitive DNA deficient mutants of Paramecium aurelia have been isolated through a new application of UV light photolysis of 5-bromouracil substituted DNA, following nitrosoguanidine mutagenesis! Bromouracil was introduced by bacterial vector to achieve specific incorporation into DNA. Non mutant cells presumably incorporated 5-bromouracil at the restrictive temperature, mutants did not. The selection procedure took a month to complete, requiring two successive sexual generations. There were two lethal periods for wild type cells in the screening system; the first occurs during the irradiation of BU substituted macronuclei by UV light, the second, following autogamy (a result of homozygosis of UV light damage to the bromouracil labelled micronuclei). From 1300 isolated survivors from the screening procedure, 29 lines were classed as temperature-sensitive. Approximately 14 percent of these were ts DNA deficient (the ratio of restrictive to permissive temperature incorporation was 10 percent or less). Protein synthesis, and food-vacuole formation at the restrictive temperature deviated no more than 50 percent from the normal level. . The selection procedure was shown to be efficient in retrieving ts DNA deficient mutants. A genetically marked ts DNA mutant (isolated through the selection system earlier) was recovered at an enrichment of 7500 fold over the wild type (mean seven runs). The methods of production of bromouracil substituted bacteria have been standardized, and the durations of various parameters of the selection system have been set. For example, the length of UV light exposure following bromouracil substitution, and the length of restrictive temperature pretreatment (Equilibration time before bromouracil treatment) have been optimized. The relative effects of parts of the screening procedure are presented along with discussion of the results, and suggestions for future applications of the isolated Paramecium lines.
Celebrating Jodha: And Revisiting the Commons
Creators: name: Nagendra, Harini
name: Mukhopadhyay, Pranab
name: Ghate, Rucha
name: Nagendra, Harini
name: Mukhopadhyay, Pranab
name: Ghate, Rucha
Publisher: name: Unknown
Year: 2021
Subjects: subject: Resource /Energy Economics and Policy
subject: Commons
subject: Narpat S. Jodha

description: Narpat S. Jodha (1937–2020) passed away at the age of 83 years. He is best remembered for his contribution to research on the commons and livelihoods in semi-arid regions in India. His work has transcended geographical boundaries and has won him worldwide recognition. His passing away provides an occasion to revisit the commons issue for multiple reasons, mainly that the livelihood issues that triggered the study of the commons still remain. Despite all the livelihood benefits that the commons provide, it is widely acknowledged that the commons in India are under threat, which throws open multiple questions: Is it due to the absence of secure property rights among local communities or the result of weak governance mechanisms? We also recognize that research on the commons has moved beyond livelihood issues to gender perspectives, digital commons, urban issues, and health.
title: Assessing the Health-Related Service Needs of People Living With Human Immunodeficiency Virus: A Review of Ryan White Title II Needs Assessments
Creators: name: Loo, Ryan K.
Publisher: name: Utah State University
Year: 2005

description: The Health Resources and Services Administration (HRSA) allocated $940 million in 2002, through Title II of the Ryan White Comprehensive AIDS Resources Emergency (CARE) Act, to help states improve the quality and availability of health related services for people living with HIV/AIDS . These resources are allocated based upon recommendations made by community planning committees, which in turn base their recommendations on HIV/AIDS needs assessments. A methodologically sound, comprehensive needs assessment is a critical component of effective resource allocation decisions. Poor needs assessments might lead to poor resource allocation decisions, which might have life-threatening consequences for people living with HIV/AIDS. Little is known about the quality of Ryan White Title II (RWTII) needs assessments. This dissertation identifies seven elements of a high quality needs assessment, which might serve as an assessment tool for funding agencies and as a guidance tool for grantees. The author uses the seven elements in a review of RWTII needs assessments to provide evidence pertaining to the current level of quality of RWTII needs assessments. The seven elements are then applied in a case study of improved practice to demonstrate how to adequately apply the key elements of a high quality needs assessment.
Corticosteroid effects on fetal metabolism and studies on steroid-receptor complexes in placenta of mice
Creators: name: Wong, Ming Dak
Publisher: name: University of British Columbia
Year: 2011

description: Teratogenic and lethal effects have been reported from treatment of pregnant animals with both synthetic and natural corticosteroids, and were also observed in this investigation. Injection of dexamethasone into pregnant mice on gestational day 18 resulted in decreasing net transfer of labeled glucose from mother to fetus with increasing steroid dosage. Inhibition was also demonstrable when injections were made into the fetus in utero. It was concluded that the deleterious effects of dexamethasone on the survival of mouse fetuses might be attributable to this action. All steroid systems studied to date appear to involve a similar sequence of interactions that precede the different biochemical effects that are observed in target tissues. Binding of the steroid to a specific cytoplasmic macromolecule and translocation of this complex to the nucleus are required in the mechanism of steroid action. The placenta, being the site of maternal-fetal transmission of nutrients, was therefore examined for the presence of intracellular steroid receptors. Using Sephadex chromatography, the in vitro binding of radioactive steroids to components in mouse placental nuclei and cytoplasm was investigated. Specificity was indicated in competition studies using excess unlabeled competing steroids. This specificity was confirmed since only the active glucocorticoids formed complexes which demonstrated the ability to translocate to the nucleus. The binding properties of the cytoplasmic steroid-receptor interaction were also studied. From the time course of binding the complex was shown to possess more stability at 0°C than at 37°C, and the distribution of receptors in the cytosol appeared to be homogeneous. The cytoplasmic complex showed lability when heat denaturation and proteolytic digestion were investigated, but did not appear to be affected by nucleases or the sulfhydryl reagents. Kinetic analysis of the binding revealed the presence of high affinity specific binding sites with a dissociation constant of 17.5 nM and a receptor site concentration of 0.26 pmoles/mg protein. Using sucrose density gradient centrifugation, the molecular weight of the cytoplasmic corticosterone-receptor complex was estimated to be approximately 55•800. This investigation has revealed the existence of glucocorticoid receptors in a target tissue in which the regulation of glucose availability to the fetus may be mediated by corticosteroids. In view of the critical role that glucose plays in the nutritional status of the fetus; and the preeminent influence that glucocorticoids have on glucose uptake in other target tissues, it is then very plausible that the corticosteroids have a regulatory function in fetal growth and viability.
Dynamic power system modelling and linear optimal stabilization design using a canonical form
Creators: name: Habibullah, Bavadeen S.
Publisher: name: University of British Columbia
Year: 2011

description: The linear optimal stabilization of power systems has become a very active area of research in recent years. Implementation of an optimal control scheme usually requires the measurement of all state variables, some of which are not accessible. Dynamic estimators may be used to estimate immeasurable states. But the addition of dynamic estimator makes the overall control scheme more complex and unduly sensitive to disturbances and changes in parameters. There is another problem with the optimal control design, i.e. the choice of the performance index matrices Q and R. In this thesis a fairly accurate synchronous machine model in terms of easily measurable state variables is developed. By neglecting the short lived armature transients, the best dynamic model of a synchronous machine with torque angle, speed, electric output power, terminal voltage or current and field voltage or current as the state variables is derived. The model is used for supplemental excitation control and linear optimal control designs. For the former not only the mechanical mode but also the electrical mode oscillations are considered. For the latter the system equations are transformed into a canonical form and the optimal control thus designed is a function of the weighing matrices Q and R of the cost function. Chapter 2 is devoted to the dynamic modelling of a synchronous machine, Chapter 3 to the supplemental excitation control and Chapter 4 to the development of design techniques for the linear optimal control. Numerical examples are given in Chapters 5 and 6 for both single machine and multi-machine power systems. The nonlinear test results of power systems indicate that transient responses can be greatly improved by the linear optimal control schemes developed in this thesis.
Squares in (2^2-1)...(n^2-1) and p-adic valuation
Creators: name: Hong, Shaofang
name: Liu, Xingjiang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11D79, 11A07

description: In this paper, we determine all the squares in the sequence $\{\prod_{k=2}^n(k^2-1)\}_{n=2}^\infty $. From this, one deduces that there are infinitely many squares in this sequence. We also give a formula for the $p$-adic valuation of the terms in this sequence.
description: 4 pages. To appear in Asian-European J. Math
Realism vs. Constructivism in Contemporary Physics: The Impact of the Debate on the Understanding of Quantum Theory and its Instructional Process
Creators: name: Karakostas, Vassilios
name: Hadzidaki, Pandora
Publisher: name: arXiv
Year: 2009
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: In the present study we attempt to incorporate the philosophical dialogue about physical reality into the instructional process of quantum mechanics. Taking into account that both scientific realism and constructivism represent, on the basis of a rather broad spectrum, prevalent philosophical currents in the domain of science education, the compatibility of their essential commitments is examined against the conceptual structure of quantum theory. It is argued in this respect that the objects of science do not simply constitute 'personal constructions' of the human mind for interpreting nature, as individualist constructivist consider, neither do they form products of a 'social construction', as sociological constructivist assume; on the contrary, they reflect objective structural aspects of the physical world. A realist interpretation of quantum mechanics, we suggest, is not only possible but also necessary for revealing the inner meaning of the theory's scientific content. It is pointed out, however, that a viable realist interpretation of quantum theory requires the abandonment or radical revision of the classical conception of physical reality and its traditional metaphysical presuppositions. To this end, we put forward an alternative to traditional realism interpretative scheme, that is in harmony with the findings of present-day quantum theory, and which, if adequately introduced into the instructional process of contemporary physics, is expected to promote the conceptual reconstruction of learners towards an appropriate view of nature.
description: 26 pages
Extended Bargmann FDA and non-relativistic gravity
Creators: name: Muñoz, Ariana
name: Rubio, Gustavo
name: Salgado, Sebastián
Publisher: name: arXiv
Year: 2025
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider the construction of a free differential algebra as an extension of the extended Bargmann algebra in arbitrary dimensions. This is achieved by introducing a new Maurer-Cartan equation for a three-form gauge multiplet in the adjoint representation of the extended Bargmann algebra. The new Maurer-Cartan equation is provided of non-triviality by means of the introduction of a four-form cocycle, representative of a Chevalley-Eilenberg cohomology class. We derive the corresponding dual $L_{\infty}$ algebra and, by using the formalism of non-linear realizations, propose a five-dimensional gauge invariant action principle. Then, we derive the corresponding equations of motion and study how the presence of the three-form gauge fields and the four-cocycle modify the corresponding non-relativistic dynamics.
Quantum Fusion of Domain Walls with Fluxes
Creators: name: Bolognesi, S.
name: Shifman, M.
name: Voloshin, M. B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study how fluxes on the domain wall world volume modify quantum fusion of two distant parallel domain walls into a composite wall. The elementary wall fluxes can be separated into parallel and antiparallel components. The parallel component affects neither the binding energy nor the process of quantum merger. The antiparallel fluxes, instead, increase the binding energy and, against naive expectations, suppress quantum fusion. In the small flux limit we explicitly find the bounce solution and the fusion rate as a function of the flux. We argue that at large (antiparallel) fluxes there exists a critical value of the flux (versus the difference in the wall tensions), which switches off quantum fusion altogether. This phenomenon of flux-related wall stabilization is rather peculiar: it is unrelated to any conserved quantity. Our consideration of the flux-related all stabilization is based on substantiated arguments that fall short of complete proof.
description: 17 pages, 3 figures
Quasistatic rheology and the origins of strain
Creators: name: Roux, Jean-Noël
name: Combe, Gaël
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Features of rheological laws applied to solid-like granular materials are recalled and confronted to microscopic approaches via discrete numerical simulations. We give examples of model systems with very similar equilibrium stress transport properties -- the much-studied force chains and force distribution -- but qualitatively different strain responses to stress increments. Results on the stability of elastoplastic contact networks lead to the definition of two different rheological regimes, according to whether a macroscopic fragility property (propensity to rearrange under arbitrary small stress increments in the thermodynamic limit) applies. Possible consequences are discussed.
description: Published in special issue of "Comptes-Rendus Physique" on granular materials
The Economics of Common Pool Resources: A Review
Creators: name: Adhikari, Bhim
name: Adhikari, Bhim
Publisher: name: Unknown
Year: 2021
Subjects: subject: Resource /Energy Economics and Policy
subject: Common Pool Resources
subject: Institutions
subject: Collective Action
subject: Resource Users
subject: Economics

description: The paper analyses open access and common property resource systems drawing insights from new institutional economics, especially property rights theory and policy analysis. This analysis of common pool resources (CPRs) under common property regimes indicates that local communities devise formal and informal institutions in managing the local commons. The paper further discusses how N. S. Jodha‟s empirical work on the economics of CPRs has enhanced our understanding of the role of CPRs in the livelihood strategies of the poor in the developing world. Devolution of authority to local resource users is emphasized as an institutional imperative in designing appropriate forms of governance structures for CPR management.
Relativistic Cyclotron Radiation Detection of Tritium Decay Electrons as a New Technique for Measuring the Neutrino Mass
Creators: name: Monreal, Benjamin
name: Formaggio, Joseph A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The shape of the beta decay energy distribution is sensitive to the mass of the electron neutrino. Attempts to measure the endpoint shape of tritium decay have so far seen no distortion from the zero-mass form, thus placing an upper limit of m_nu_beta < 2.3 eV. Here we show that a new type of electron energy spectroscopy could improve future measurements of this spectrum and therefore of the neutrino mass. We propose to detect the coherent cyclotron radiation emitted by an energetic electron in a magnetic field. For mildly relativistic electrons, like those in tritium decay, the relativistic shift of the cyclotron frequency allows us to extract the electron energy from the emitted radiation. We present calculations for the energy resolution, noise limits, high-rate measurement capability, and systematic errors expected in such an experiment.
description: 4 pages, 2 figures
High Velocity Outflows in Narrow Absorption Line Quasars
Creators: name: Chartas, G.
name: Charlton, J.
name: Eracleous, M.
name: Giustini, M.
name: Hidalgo, P. Rodriguez
name: Ganguly, R.
name: Hamann, F.
name: Misawa, T.
name: Tytler, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The current paradigm for the AGN phenomenon is a central engine that consists of an inflow of material accreting in the form of a disk onto a supermassive black hole. Observations in the UV and optical find high velocity ionized material outflowing from the black hole. We present results from Suzaku and XMM-Newton observations of a sample of intrinsic NAL quasars with high velocity outflows. Our derived values of the intrinsic column densities of the X-ray absorbers are consistent with an outflow scenario in which NAL quasars are viewed at smaller inclination angles than BAL quasars. We find that the distributions of alpha_ox and Dalpha_ox of the NAL quasars of our sample differ significantly from those of BAL quasars and SDSS radio-quiet quasars. The NAL quasars are not significantly absorbed in the X-ray band and the positive values of Dalpha_ox suggest absorption in the UV band. The positive values of Dalpha_ox of the intrinsic NAL quasars can be explained in a geometric scenario where our lines of sight towards the compact X-ray hot coronae of NAL quasars do not traverse the absorbing wind whereas lines of sight towards their UV emitting accretion disks do intercept the outflowing absorbers.
description: 12 pages, 5 figures, accepted in New Astronomy Reviews
Average-case analysis of perfect sorting by reversals
Creators: name: Bouvel, Mathilde
name: Chauve, Cedric
name: Mishna, Marni
name: Rossin, Dominique
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: Data Structures and Algorithms (cs.DS)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: 05A05, 05A16, 05C90, 05C05

description: A sequence of reversals that takes a signed permutation to the identity is perfect if at no step a common interval is broken. Determining a parsimonious perfect sequence of reversals that sorts a signed permutation is NP-hard. Here we show that, despite this worst-case analysis, with probability one, sorting can be done in polynomial time. Further, we find asymptotic expressions for the average length and number of reversals in commuting permutations, an interesting sub-class of signed permutations.
Reduction and Emergence in Bose-Einstein Condensates
Creators: name: Healey, Richard
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A closer look at some proposed Gedanken-experiments on BECs promises to shed light on several aspects of reduction and emergence in physics. These include the relations between classical descriptions and different quantum treatments of macroscopic systems, and the emergence of new properties and even new objects as a result of spontaneous symmetry breaking.
Frustration of Purpose, Brexit, the COVID-19 Pandemic and Commercial Contracts
Creators: name: Kovač, Mitja
name: Albrecht, Paul
Publisher: name: Nordic Journal of Commercial Law
Year: 2022

description: Lawyers and commercial contracting have been stressed by extraordinary uncertainty over the past four years. Brexit and the Covid-19 pandemic’s uncertain outcomes and the debate on the appropriate application of the frustration doctrine represent one of the most challenging issues for contract law scholars and practitioners. This paper contributes to the extensive scholarly debate on whether Brexit and Covid-19 constitute frustration of purpose events in contracts by exploiting the findings of the economic literature on the consequences of supervening events. It offers a conceptual framework for an improved legal intervention in case of supervening events in which a court must decide whether a certain event classifies as frustration of purpose and whether to discharge the promisor’s obligations
description: Nordic Journal of Commercial Law, No. 1 (2022)
Estimation of poroelastic parameters from seismograms using Biot theory
Creators: name: De Barros, Louis
name: Dietrich, Michel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We investigate the possibility to extract information contained in seismic waveforms propagating in fluid-filled porous media by developing and using a full waveform inversion procedure valid for layered structures. To reach this objective, we first solve the forward problem by implementing the Biot theory in a reflectivity-type simulation program. We then study the sensitivity of the seismic response of stratified media to the poroelastic parameters. Our numerical tests indicate that the porosity and consolidation parameter are the most sensitive parameters in forward and inverse modeling, whereas the permeability has only a very limited influence on the seismic response. Next, the analytical expressions of the sensitivity operators are introduced in a generalized least-square inversion algorithm based on an iterative modeling of the seismic waveforms. The application of this inversion procedure to synthetic data shows that the porosity as well as the fluid and solid parameters can be correctly reconstructed as long as the other parameters are well known. However, the strong seismic coupling between some of the model parameters makes it difficult to fully characterize the medium by a multi-parameter inversion scheme. One solution to circumvent this difficulty is to combine several model parameters according to rock physics laws to invert for composite parameters. Another possibility is to invert the seismic data for the perturbations of the medium properties, such as those resulting from a gas injection.
Toward Inclusive Reading Rooms: Recommendations for Decolonizing Practices and Welcoming Indigenous Researchers
Creators: name: Buchanan, Rose
name: George, Keau
name: Gibson, Taylor
name: Hung, Eric
name: Labinsky, Daria
name: Marsh, Diana E.
name: Menyuk, Rachel
name: Norton-Wisla, Lotus
name: Ortego-Chiolero, Selena
name: Sowry, Nathan
name: Tyndall, Monique
Publisher: name: Digital Repository at the University of Maryland
Year: 2021
Subjects: decolonizing methodologies
archives
archival practice
Native American and Indigenous collections
institutional change
archival collections
access
cultural sensitivity

description: The article, based on a discussion between the Native American Archives Section (NAAS) and the Human Rights Archives Section (HRAS) at the Society of American Archivists' Annual Meeting, discusses the current culture of archival reading rooms and how to start the process of decolonizing them. It begins with examples of institutional archives that have introduced culturally-responsive practices for their Native users as well as, and provides recommendations for institutions to continue fostering welcoming environments. It fills an important gap in current archival literature around decolonizing methodologies and practices in institutions, which has largely ignored the arcane colonial practices and spaces through which Native and Indigenous (and many BIPOC) researchers physically gain access to their heritage collections.
title: Working Memory Capacity, Temporal Discounting, and Exercise Rates
Creators: name: Lambourne, Kathleen
Publisher: name: Utah State University
Year: 2005

description: During decision-making, an individual must weigh the value of the outcomes involved while also considering the amount of time until the outcomes will occur. Discounting occurs when a smaller, immediately available reward is chosen over a larger, more delayed reward. Discounting rates are likely related to working memory capacity, because working memory stores and processes the value of the outcomes. The purpose of this study was to examine the relationship between working memory, temporal discounting, and the decision to engage in physical activity.
The results showed that working memory capacity was related to the physical activity rates. Discounting rates from a money task and a health task were not related to activity rates. However, in the subsample of individuals who reported that their primary motive to exercise was health, working memory and discounting rates from the money task were both statistically significant predictors of physical activity.
Cosmic noise absorption pulsations
Creators: name: Reid, JS
Publisher: name: University Of Tasmania
Year: 2023

description: The fast cosmic noise absorption (c.n.a.) pulsations observed with fast response riometers at Macquarie Island in the southern auroral zone are discussed in relation to the parameters of the lower ionosphere. The pulsations which are similar to and associated. with pulsations in aurora luminosity (at ˜í¬™ 4278‚àövñ), Pi2 micropulsations and fast bremmstrahlung X-ray pulsations are unique in that they exhibit a time asymmetry or relaxation time which is believed to be a consequence of the relatively slow rate of removal of secondary electrons in the ionosphere. The relaxation time, T is defined as ˜ìvë = - A/ (¬ªvü) max where A is the amplitude of the pulse,above background and (¬ªvü)max is the Maximum (negative) slope of the relaxation part of the pulse. Measured values of ˜ìvë varied between 1 and 30 seconds and scatter diagrams of ˜ìvë versus A indicate a strong tendency for ˜ìvë to increase with increasing pulse amplitude. The properties and anomalies of the D-region of the ionosphere are discussed, as is the applicability of the Bates and Massey rate equations to fluctuations in electrons density in this region. A computer model was constructed in which the rate equations were numerically integrated using a variety of values of the parameters involved and for a variety of primary spectrum e-folding energies in an attempt to simulate the observed pulsations. Relaxation times as small as some of those observed were not obtained from the model. A new approximation formula for relaxation time as a function of height was derived. The possibility that the observed positive relationship between relaxation time and pulse amplitude is due to the chemical dynamics of a situation in which electrons recombine with positive ions of widely differing reaction rates is discussed and dismissed. It is concluded that the observed c. n. a. pulsations are an E-region phenomenon associated with quasi monoenergetic peaks in the background primary flux with energies somewhere in the range of from 4 to 10 keV. The pulsations are believed to be due to fluctuations in the energy of this peak or to pulsations in primary particle flux on the high energy side of the -peak.
Aspects of north end mineralisation, Rosebery Mine, Western Tasmania
Creators: name: Reid, Lachlan Grant
Publisher: name: University Of Tasmania
Year: 2023

description: The Rosebery Mine is a major Cambrian volcanic-hosted massive sulphide ZnPb-Cu-Ag-Au deposit which is located in the Mount Read Volcanic belt of western Tasmania. The orebody is generally regarded as an exhalative deposit but evidence from the north end of the mine suggests a sub-seafloor replacement origin for the mineralisation. Sulphide mineralisation is overlain by an intrusive porphyry sill and it contains alteration minerals (carbonate, silica, chlorite, pyrite assemblages) that are related to mineralising fluids and/or mineralising events. The massive sulphide horizons occur much closer to, or on, the footwall-host contact than previously logged or mapped. Using immobile element geochemistry, Ti/Zr values, it was possible to lithologically define the intensely altered footwall-host rock contact. This contact is called the GDC (geochemically defined contact) and it was consistently defined by log(Ti/Zr)=0.92. Alteration patterns beneath sulphide mineralisation showed no evidence for footwall 'pipe-like~ fluid pathways. Most of the observed alteration patterns, for example massive carbonate, can be related to some mineralising event, but due to intense alteration any small scale interpretation was complex and difficult. This study provides information on: 1) an intrusive porphyry sill which directly overlies massive sulphide mineralisation, 2) complex and intense footwall and host rock alteration patterns and, 3) geochemical positioning of the footwall-host rock contact.
title: Brief Experimental Analysis of Reading Intervention Components for English-Language Learners
Creators: name: Malloy, Kimberly J.
Publisher: name: Utah State University
Year: 2005

description: Identifying effective instructional modifications for English-language learners (ELL) experiencing reading problems is a difficult task given the vast individual differences in language proficiency, motivation, and school experience. To address this issue, this study investigated the utility of brief experimental analysis as a means to quickly identify the most effective instructional components to increase reading performance for five ELL. Using a multielement design, five treatments were administered one by one with increasing language support. There were individual differences in response and effective treatments were identified for all participants. Further, an extended analysis of alternating baseline conditions with the hypothesized effective treatment indicated that selected interventions increased reading rates for four participants over time. A combination of the two most effective interventions based on results from the brief experimental analysis increased reading performance for the fifth student. These procedures appear to hold promise for quickly identifying effective instructional components for individual ELL.
Technical Report: SPIDAL Summer REU 2020 Implementing an HDF5-based File Format Coordinate Reader into MDAnalysis
Creators: name: Jakupovic, Edis
Publisher: name: figshare
Year: 2021
Subjects: subject: Computational Physics
subject: 29901 Biological Physics
subject: FOS: Biological sciences
subject: Computer Software
subject: FOS: Computer and information sciences

description: Molecular dynamics (MD) trajectory files are now commonly Terabytes in size, which comes with the negative consequence that reading the file and extracting useful data has become a bottleneck in the analysis of MD trajectories. Results in recent works have shown that a message passing interface implementation which reads an HDF5 file in parallel is a promising approach to speeding up trajectory analysis, so the goal of this project was to implement a trajectory reader class, H5MDReader, into MDAnalysis that is capable of reading an H5MD file in parallel through the parallel I/O features of an MPI library. This was done using the h5py Python package, which can handle HDF5 file objects with MPI drivers for parallel reading and writing. H5MDReader is able to read H5MD files with parallel drivers and an MPI communicator, however the parallel features with multiple processors have not been thoroughly tested. The serial capabilities of H5MDReader were benchmarked by calculating the RMSD of sample trajectories versus various file formats. The results show that H5MDReader takes a longer time to read files than other formats. This was found to be caused by a computationally expensive operation tied to indexing and retrieving arrays from HDF5 datasets. These results highlighted areas where H5MDReader's code can be optimized. The next step in the development of H5MDReader is testing its parallel MPI I/O capabilities to see if we can scale analysis parallelization with multiple processes.
title: Parent and Child Characteristics Associated with Comorbidity Differences in Children with Attention-Deficit/Hyperactivity Disorder
Creators: name: Pelletier, Julie A.
Publisher: name: Utah State University
Year: 2005

description: Attention-deficit/hyperactivity disorder (ADHD) is a commonly diagnosed disorder that is associated with many negative outcomes. For many children, the disorder is comorbid with externalizing and/or internalizing problems. Understanding the correlates of comorbid problems in children with ADHD could be important for better treatment and/or prevention strategies. The purposes of this study were (a) to determine what parent-related and child-related characteristics are associated with externalizing or internalizing problems in children with ADHD, and (b) to determine if there are differences in these characteristics between a group of children with ADHD and externalizing problems, and a group of children with ADHD and externalizing and internalizing problems. Results indicated that parent anxiety, parent aggression, and child hostility were associated with internalizing problems. Child aggression was associated with externalizing problems. Results also indicated that children with ADHD and externalizing and internalizing problems had significantly more hostility than children with ADHD and externalizing problems only.
title: Therapeutic Processes in a Cognitive-Behavioral Treatment for Depressed Adolescents with Inflammatory Bowel Disease
Creators: name: Brent, Meredith
Publisher: name: Utah State University
Year: 2006

description: Youth with inflammatory bowel disease (IBD) have higher rates of depression than healthy youth. A cognitive-behavioral treatment, primary and secondary control enhancement training-physical illness (PASCET-PI), for depressed adolescents with IBD was associated with reductions in depressive symptoms. The purpose of this study was to examine the salience of nonspecific processes (factors inherent in any human relationship) and specific processes (factors related to therapy content) during PASCET-PI sessions and their association with improvements in psychological functioning.
Participants included 10 adolescent patients with IBD with mean illness duration of 31.9 months. At intake, eight participants qualified for a diagnosis of major depressive disorder and two for a diagnosis of minor depression. Participants completed measures of depressive symptomatology and clinicians completed the Children's Global Assessment Scale (CGAS). Measures were completed at posttreatment, 6 months posttreatment, and 1 year posttreatment. Independent judges used the Psychotherapy Process Q-sort (PQS) to rate the salience of therapeutic processes for PASCET-PI sessions #2 and #8 for each subject.
PQS ratings of PASCET-PI sessions were con-elated with ideal prototypes of cognitive-behavioral treatment (CBT), inteqnrsonal therapy (IPT), and psychodynamic (PD) orientations that were previously developed based on PQS ratings of an ideal session, according to expert therapists. Findings indicate that PASCET-PI sessions most closely resembled the CBT prototype (r = .51, p < .05). Change scores on outcome measures were correlated with PQS-prototype correlates to determine which processes were associated with improved psychological functioning. Findings suggest that reductions in depressive symptomatology were associated with processes characteristic of various orientations. Thus, CBT processes were not exclusive in promoting change. There were strong positive relationships between change scores of the PCS and prototypes of all orientations (CBT, IPT, and PD) at posttreatment and between the CDI and ASQ and all orientations at 6-months follow-up (r = .62 -.72, p < .05). Comparisons of specific process-outcome correlates and nonspecific process-outcome correlates did not reveal significant differences.
title: Hand-Held Calculators And Mathematics Achievement: What the 1996 National Assessment Of Educational Progress Eighth-Grade Mathematics Exam Scores Tell Us
Creators: name: Wareham, Kenneth L.
Publisher: name: Utah State University
Year: 2005

description: The purpose of this study was to analyze the 1996 National Assessment of Educational Progress data to identify the relationship between calculator use and student performance on the National Assessment of Educational Progress Mathematics Assessment. This general purpose includes several sub issues. In addition to being interested in the overall relationship between use and National Assessment of Educational Progress achievement (including the effort to control for spurious factors), this study examined the contextual factors that moderate the impact of calculator use. Similarly, it analyzed the relationship between calculator use and student performance on calculator-allowed and calculator-restricted items, as well as the ability of students to recognize whether the use of a calculator was appropriate when responding to a math problem.
Findings indicate that significant differences in achievement exist between students who regularly use calculators and those who do not use calculators. Even when controlling for various contextual factors that moderated this relationship (e.g., gender, socioeconomic status, parents' level of education, students' National Assessment of Educational Progress achievement level), it was found that the more frequently students use a calculator the higher their scores tend to be. The results also show that when not allowed to use calculators, the more frequent calculator users continue to score higher than those who do not use calculators. Finally, using calculators does not automatically equate to calculator dependence, and, in fact, the more often students use a calculator the more adept they are at applying it properly and withholding it when inappropriate.
Based on the findings of this study, the use of a calculator in mathematics classes should improve students' ability to learn mathematical concepts and apply calculator technology in an appropriate manner when solving mathematical problems.
Exponential quantum enhancement for distributed addition with local nonlinearity
Creators: name: Marblestone, Adam Henry
name: Devoret, Michel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider classical and entanglement-assisted versions of a distributed computation scheme that computes nonlinear Boolean functions of a set of input bits supplied by separated parties. Communication between the parties is restricted to take place through a specific apparatus which enforces the constraints that all nonlinear, nonlocal classical logic is performed by a single receiver, and that all communication occurs through a limited number of one-bit channels. In the entanglement-assisted version, the number of channels required to compute a Boolean function of fixed nonlinearity can become exponentially smaller than in the classical version. We demonstrate this exponential enhancement for the problem of distributed integer addition.
description: To appear in Quantum Information Processing
monikashea/ECoMap: ECoMap first release
Creators: name: , Monikashea
Publisher: name: Zenodo
Year: 2020
Subjects: subject: ECoMap
subject: Ecotone Mapping
subject: Ecology
subject: FOS: Biological sciences

description: This is the first release of the ECoMap code and associated files, including datasets used in the analyses.
description: This is the GitHub repository with the code, data, and associated files used in article, Shea, M.E., M.K. Clayton, P.A. Townsend, S. Berg, H. Elza, and D.J. Mladenoff. 2020. Identifying ecotone location using the co-occurrence property. Journal of Vegetation Science. https://doi.org/10.1111/jvs.12929.
Barriers for the reduction of transport due to the EXB drift in magnetized plasmas
Creators: name: Tronko, Natalia
name: Vittot, Michel
name: Chandre, Cristel
name: Ghendrih, Philippe
name: Ciraolo, Guido
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider a 1 1/2degrees of freedom Hamiltonian dynamical system, which models the chaotic dynamics of charged test-particles in a turbulent electric field, across the confining magnetic field in controlled thermonuclear fusion devices. The external electric field E = \nabla\bigvee is modeled by a phenomenological potential V and the magnetic field B is considered uniform. It is shown that, by introducing a small additive control term to the external electric field, it is possible to create a transport barrier for this dynamical system. The robustness of this control method is also investigated. This theoretical study indicates that alternative transport barriers can be triggered without requiring a control action on the device scale as in present Internal Transport Barriers (ITB).
description: 18
Dynamics of tournaments: the soccer case
Creators: name: Ribeiro, H. V.
name: Mendes, R. S.
name: Malacarne, L. C.
name: Picoli, S.
name: Santoro, P. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: A random walk-like model is considered to discuss statistical aspects of tournaments. The model is applied to soccer leagues with emphasis on the scores. This competitive system was computationally simulated and the results are compared with empirical data from the English, the German and the Spanish leagues and showed a good agreement with them. The present approach enabled us to characterize a diffusion where the scores are not normally distributed, having a short and asymmetric tail extending towards more positive values. We argue that this non-Gaussian behavior is related with the difference between the teams and with the asymmetry of the scores system. In addition, we compared two tournament systems: the all-play-all and the elimination tournaments.
description: To appear in EPJB
Critical Properties of an Integrable Supersymmetric Eletronic Model
Creators: name: Malvezzi, A. L.
name: Martins, M. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the physical properties of an integrable extension of the Hubbard model with a free parameter $γ$ related to the quantum deformation of the superalgebra $sl(2|2)^{(2)}$. The Bethe ansatz solution is used to determine the nature of the spin and charge excitations. The dispersion relation of the charge branch is given by a peculiar product between energy-momenta functions exhibiting massless and massive behaviors. The study of the finite-size corrections to the spectrum reveals us that the underlying conformal theory has central charge $c=-1$ and critical exponents depending on the parameter $γ$. We note that exact results at the isotropic point $γ=0$ can be established without recourse to the Bethe ansatz solution.
description: 13 pages, 2 figures
A practical evaluation of the Tasmanian Work order scheme
Creators: name: Rook, Meinard Karel
Publisher: name: University Of Tasmania
Year: 2023

description: The Work Order Scheme was introduced into the Tasmanian criminal justice system in 1972 as an optional alternative to imprisonment. It provides for offenders to be sentenced to a maximum of 25 days of work on community projects, to be completed during normal leisure periods. 'l'he introduction of the scheme was accompanieq by a reversal of trends 'from an increasing to a decreasing daily average prison population. Although this would appear to be related to t.he introduction of the Work Order Scheme, a similar reversal of trends occurred in the other Australian States, indicating an Australia-wide change in sentencing policy. A six-month analysis of the operation of the scheme involving 451 offenders showed an average weekly attendance of 63%, 12% absent without leave and 24% absent with permission. The absconding rate was 5. 5% and 1.6%; were breached for non-compliance with their work order instructions. Significant differences in performance were found between the five administrative regions as well as the three different types of work projects. The characteristics of offenders sentenced to work orders were similar to those found throughout the criminal justice systems in the western world, namely poorly-educated, young, single males working in semi-skilled or unskilled jobs with a record of prior offences. A comparison of recidivism rates between comparable groups of offenders sentenced to work orders and those sentenced to three months or less of imprisonment, showed that 44% of the work order group were convicted of subsequent offences compared to 58% of the short-term prison group within a six-to-eighteen-month follow-up period. Similar differences were found between the two groups for subsequent imprisonment, with 18% of the work order group being sentenced to prison for subsequent offences compared to 31% of the short-term prison group. A comparison of the costs of imprisonment and the costs of the Work Order Scheme showed the gross cost of imprisonment in 1974/75 to be around $145 per prisoner per week, compared to an estimated gross cost of about $4 per work order employee per week. This cost differential was increased when the value of production was considered. Qualitative information in the form of anecdotes high lighting outstanding successes and failures on the scheme were considered, and finally a number of suggestions made for improving the scheme.