cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Transfinite thin plate spline interpolation
Creators: name: Bejancu, Aurelian
Publisher: name: arXiv
Year: 2009
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 41A05, 41A15, 41A63

description: Duchon's method of thin plate splines defines a polyharmonic interpolant to scattered data values as the minimizer of a certain integral functional. For transfinite interpolation, i.e. interpolation of continuous data prescribed on curves or hypersurfaces, Kounchev has developed the method of polysplines, which are piecewise polyharmonic functions of fixed smoothness across the given hypersurfaces and satisfy some boundary conditions. Recently, Bejancu has introduced boundary conditions of Beppo Levi type to construct a semi-cardinal model for polyspline interpolation to data on an infinite set of parallel hyperplanes. The present paper proves that, for periodic data on a finite set of parallel hyperplanes, the polyspline interpolant satisfying Beppo Levi boundary conditions is in fact a thin plate spline, i.e. it minimizes a Duchon type functional.
Suppression of spin-density-wave transition and emergence of ferromagnetic ordering of Eu$^{2+}$ moments in EuFe$_{2-x}$Ni$_{x}$As$_{2}$
Creators: name: Ren, Zhi
name: Lin, Xiao
name: Tao, Qian
name: Jiang, Shuai
name: Zhu, Zengwei
name: Wang, Cao
name: Cao, Guanghan
name: Xu, Zhu'an
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a systematic study on the physical properties of EuFe$_{2-x}$Ni$_{x}$As$_{2}$ (0$\leq$\emph{x}$\leq$0.2) by electrical resistivity, magnetic susceptibility and thermopower measurements. The undoped compound EuFe$_{2}$As$_{2}$ undergoes a spin-density-wave (SDW) transition associated with Fe moments at 195 K, followed by antiferromagnetic (AFM) ordering of Eu$^{2+}$ moments at 20 K. Ni doping at the Fe site simultaneously suppresses the SDW transition and AFM ordering of Eu$^{2+}$ moments. For $x\geq$0.06, the magnetic ordering of Eu$^{2+}$ moments evolves from antiferromagnetic to ferromagnetic (FM). The SDW transition is completely suppressed for $x\geq$0.16, however, no superconducting transition was observed down to 2 K. The possible origins of the AFM-to-FM transition and the absence of superconductivity in EuFe$_{2-x}$Ni$_{x}$As$_{2}$ system are discussed.
description: 5 pages, 5 figures, accepted for publication in PRB
Adult education among members of a North Vancouver labour union
Creators: name: Brown, Maria Johanna
Publisher: name: University of British Columbia
Year: 2011

description: This study surveyed the education and information seeking activities of Local 389 of the Canadian Union of Public Employees covering the period from March 1971 to March 1972. One hundred and three respondents were interviewed in a random sample of 141 union members. Participation rates were established for union education, labour education, other adult education, self-directed learning projects, and other information seeking activities. Socio-economic and psycho-social characteristics of participants and non-participants in these various educational activities were also studied. In view of the repeatedly expressed union assumptions that unions are responsible for all educational needs of rank and file members, this study also established how important members of Local 389 perceived their union's role to be in providing education in four different areas: union education, vocational education, labour education and leisure time education. It was found that the members studied accepted the union's role in providing union education, rejected the union's role in providing labour and leisure time education, and were divided in their opinion about the union's role, in providing vocational education, depending on their formal level of education. Only the poorly educated, unskilled members studied were willing to accept union responsibility for vocational training. In view of the surprisingly large amount of self-learning reported by the respondents, a t-test found that there was no significant difference in mean hours spent in self-directed projects for participants and non-participants in formal courses. Participation in union education was found to be limited to active union members only (8.74 per cent of the respondents). No participation in labour education was reported by the respondents studied, while 35.92 per cent participated in other adult education courses. Participation in self-directed learning projects and in other information seeking activities was high, with percentages of 99.03 and 96.12 respectively. Union participation (the extent to which a member participates in the life of the union), age and sex were found to be significant factors for participation or non-participation in formal courses. No significant differences were found in types of subjects in which respondents in different occupational categories were interested.
Additional file 6 of SRSF1 regulates primordial follicle formation and number determination during meiotic prophase I
Creators: name: Sun, Longjie
name: Lv, Zheng
name: Chen, Xuexue
name: Wang, Chaofan
name: Lv, Pengbo
name: Yan, Lu
name: Tian, Shuang
name: Xie, Xiaomei
name: Yao, Xiaohong
name: Liu, Jingjing
name: Wang, Zhao
name: Luo, Haoshu
name: Cui, Sheng
name: Liu, Jiali
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Table 3. Primer sequences were used in this study.
Validation of a new mobile and openly available processing speed test
Creators: name: Van Der Kley, EM
Publisher: name: University Of Tasmania
Year: 2023

description: There are barriers to current tests of processing speed: cost, access, and learning effects. We aimed to develop a brief mobile test of processed speed, that correlates strongly with other tests of processing speed, has minimal learning effects, and acceptable test retest reliability. The Mobile Open Processing Speed test (MOPS), was adapted from the traditional WAIS Symbol search task. Participants examine and respond to an array of 6 symbols determining if any match the pair of target symbols. Symbols are comprised of both inner and outer shapes to increase task difficulty. Two studies were conducted to validate the MOPS. A 7-day test-retest study comprising of the MOPS, WAIS SS and SDMT tests in 68 healthy adults (28 male, 20-63 years); and an acute alcohol dosing study to determine sensitivity to intoxication (BrAC 0.05 and 0.08) in 36 young adults (15 male, 18-34 years). The MOPS correlated strongly with the WAIS SS (r=-0.69) and SDMT (r=0.74). Acceptable test-retest reliability (r=.80) and significant moderate magnitude learning effects were identified (d=0.59, p<.001). The MOPS was more sensitive to acute alcohol intoxication than the other measures (g=-0.31, p=0.114). Continuing validation, reduction of learning effects, and creation of norms are future directions for the MOPS.
Joint-sparse recovery from multiple measurements
Creators: name: Berg, Ewout van den
name: Friedlander, Michael P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The joint-sparse recovery problem aims to recover, from sets of compressed measurements, unknown sparse matrices with nonzero entries restricted to a subset of rows. This is an extension of the single-measurement-vector (SMV) problem widely studied in compressed sensing. We analyze the recovery properties for two types of recovery algorithms. First, we show that recovery using sum-of-norm minimization cannot exceed the uniform recovery rate of sequential SMV using $\ell_1$ minimization, and that there are problems that can be solved with one approach but not with the other. Second, we analyze the performance of the ReMBo algorithm [M. Mishali and Y. Eldar, IEEE Trans. Sig. Proc., 56 (2008)] in combination with $\ell_1$ minimization, and show how recovery improves as more measurements are taken. From this analysis it follows that having more measurements than number of nonzero rows does not improve the potential theoretical recovery rate.
description: 19 pages, 9 figures
A tauopathy model of Alzheimer's disease in Drosophila melanogaster
Creators: name: Van Drunen, SF
Publisher: name: University Of Tasmania
Year: 2023

description: Alzheimer's disease is the most prevalent cause of dementia, decreasing a person's functionality in memory, personality and eventually motor domains, leading to the need for full time care. Tau is a protein in the brain which becomes dysfunctional in Alzheimer's and the localisation of tau pathology is associated with the deficits people experience, starting in learning and memory areas such as the hippocampus. Drosophila melanogaster provide a useful model for studying Alzheimer's disease. In the current study I verified a model of tau dysfunction induced in the whole brain (pan-neuronally) and investigated a novel model specific to the learning and memory area of the brain in Drosophila, the mushroom body. Consistent with the literature, the pan-neuronal tau flies had deficits in motor performance and a decreased lifespan compared to controls. Flies with mushroom body specific tauopathy had a deficit in learning and memory, decreased lifespan and abnormal morphology of the affected brain region compared to controls. The next step of this research is to study gene expression in the learning and memory neurons. This will allow us to understand the epigenetic changes induced by tauopathy, paving the way for the development of targeted screening tools and treatments for Alzheimer's disease.
On the integrality of the Taylor coefficients of mirror maps
Creators: name: Krattenthaler, Christian
name: Rivoal, Tanguy
Publisher: name: arXiv
Year: 2009
Subjects: subject: Number Theory (math.NT)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 11S80 (Primary), 11J99, 14J32, 33C20 (Secondary)

description: We show that the Taylor coefficients of the series ${\bf q}(z)=z\exp({\bf G}(z)/{\bf F}(z))$ are integers, where ${\bf F}(z)$ and ${\bf G}(z)+\log(z) {\bf F}(z)$ are specific solutions of certain hypergeometric differential equations with maximal unipotent monodromy at $z=0$. We also address the question of finding the largest integer $u$ such that the Taylor coefficients of $(z ^{-1}{\bf q}(z))^{1/u}$ are still integers. As consequences, we are able to prove numerous integrality results for the Taylor coefficients of mirror maps of Calabi-Yau complete intersections in weighted projective spaces, which improve and refine previous results by Lian and Yau, and by Zudilin. In particular, we prove the general "integrality" conjecture of Zudilin about these mirror maps.
description: 36 pages, AmS-LaTeX; to appear in Duke Math. J. This is the first part of an originally larger paper arXiv:0709.1432, of the same title. The second part is arXiv:0907.2578. This final version is to appear in Duke J. Math
Deep Linking: Machine learning to connect up the PIDs
Creators: name: Lin, Jennifer
name: Istrate, Ana-Maria
name: Li, Donghui
name: Wade, Alex D.
Publisher: name: Zenodo
Year: 2021
Subjects: Machine Learning
Chan Zuckerberg Initiative
Meta
PIDs
named-entity recognition
BERT
UMLS
Recommendations

description: Science is progressive, and every discovery, set of data, and publication builds on previous work. Today, it's impossible to put every new development in the context of what's gone before, especially if research outputs are largely invisible living all over the web disconnected to each other. Meta (https://meta.org) aims to remove this barrier to scientific progress with its graph of biomedical research connecting up PIDs across "people, places, things." We apply machine learning to the scientific literature as a way to get retrieve more connections between these essential elements. During this session, we will share the work we've done, lessons we're learning, and open up the remaining time as a group discussion on best practices, pitfalls, areas of opportunity.
The determinants of working-class conservatism : a cross-national comparison
Creators: name: Bakvis, Herman
Publisher: name: University of British Columbia
Year: 2011

description: The study focusses on the phenomenon of 'working-class conservatism', support for right-wing or centre parties on the part of certain segments of the working-class. This mode of voting behaviour is analysed in three West European countries; Great Britain, West Germany and Italy. In the introduction a number of explanations are examined which could conceivably account for the phenomenon. It is suggested that explanations centred around the notion of 'embourgeoisement' of the working-class (the process whereby 'affluent' workers come to identify with the middle-class thus voting 'conservative') contain certain weaknesses. It is argued that immediate subcultural influences such as the family, the church and the work-place are still most important in explaining the working-class vote for 'conservative' parties. An explanatory model is developed which emphasizes the influence of a worker's social environment as the chief determinant of his voting behaviour. Hypotheses derived from this model, as well as alternative hypotheses related to the 'embourgeoisement' argument are tested through secondary analysis of survey data collected in the late 1950's and early 1960's. The results of the study suggest that in all three countries 'working-class conservatism' can be explained largely in terms of the subcultural influences outlined in the model. Level of income attained by workers may have some independent effect in West Germany and Great Britain. In these two countries conservative parties are somewhat more successful in retaining the loyalties of conservative workers in the low and high income categories compared to those in the medium categories. However this does not mean a confirmation of the 'embourgeoisement1 argument. Most 'affluent conservative workers', it is argued, arrived at their conservative voting identity via early parental socialization. There are few defectors from left-wing parties to conservative parties among 'left' workers who attain a high level of income.
Developing a brief and valid measure of delay discounting
Creators: name: Wilson, TL
Publisher: name: University Of Tasmania
Year: 2023

description: Delay discounting, the rate at which an individual devalues delayed rewards, is a potential neurobehavioural marker of substance use disorder. The Monetary Choice Questionnaire is a commonly used measure of delay discounting. It has good psychometric properties, such as good construct validity, test-retest reliability and limited ceiling effects. A drawback of the questionnaire currently limiting its use in clinical settings is that it is unnecessarily long and repetitive. The questionnaire comprises 27 questions: 9-items within each small ($25‚ÄövÑvÆ$35), medium ($50‚ÄövÑvÆ60) and large ($75‚ÄövÑvÆ$85) delayed reward category. The current investigation aimed to develop a brief, valid and reliable version of the Monetary Choice Questionnaire. An additional aim was to assess if delay discounting was sensitive to acute alcohol intoxication. Of the thirteen brief scales that were developed and tested, a 9-item scale made up of the medium sized delayed rewards replicated the full questionnaire, differentiated people with high and low alcohol harms, according to the alcohol use disorders identification test, and demonstrated good test-retest reliability. The full questionnaire did not differentiate AUDIT groups and was significantly different over the test-retest period. With regards to the secondary aim, acute alcohol intoxication did not significantly affect delay discounting.
title: Gadflies at the Gate: Why Do Individual Investors Sponsor Shareholder Resolutions?
Creators: name: Larcker, David F.
name: Tayan, Brian
Publisher: name: Corporate Governance Research Initiative
Year: 2016

description: Individual investors are active participants in the shareholder resolution process, filing approximately one quarter of the total number of shareholder resolutions voted on each year. Their activism, however, is controversial. Critics contend that the large number of resolutions filed each year waste corporate resources and shareholder attention. Defenders respond that every shareholder is a legitimate participant in corporate governance and that shareholder resolutions are an important means of exercising voting and economic rights to improve corporate outcomes. In this Closer Look, we examine the topic of individual shareholder activism in detail. We ask: Are individual activists harbingers of important new ideas or a strain on corporate resources? To what extent should shareholders actively participate in corporate policy? To what extent should they defer to the judgment of directors? How much “shareholder democracy” is the right amount? Should SEC rules governing shareholder resolutions be adjusted?
Don't touch that drink! : Making serious cognitive testing more engaging for use in substance consumer contexts
Creators: name: Young, MR
Publisher: name: University Of Tasmania
Year: 2023

description: Inhibitory control (IC) is crucial in the ability to resist and impede habitual substance use. Workforce surveys have indicated a strong interest in the assessment of IC during substance use treatment. However, these are poorly utilised due to cost, accessibility and poor appeal. We have developed a brief, interactive IC task for smartphones and tablets. Our proposed measure uses a go/no-go paradigm; go-stimuli are bottles of healthy drinks and no-go stimuli are bottles of alcoholic drinks. Two studies were conducted to validate the task: a seven-day test-retest study, comprising both this test and traditional IC tasks in healthy adults (N=68, 40 females); and an acute alcohol dosing study designed to determine sensitivity to intoxication (BrAC=0.05%, 0.08%; N=37, 22 females). The WAB demonstrated weak to moderate magnitude correlations with existing measures of IC and minimal learning effects on repeat assessment. Participants also reported greater acceptability of the WAB than a traditional IC measure. Finally, the WAB was a more sensitive measure to acute alcohol intoxication. Overall, the WAB demonstrates good face validity, equivalent reliability and greater sensitivity than traditional IC measures. Further development of the task is required to reduce ceiling effects and ensure that it is a valid IC measure.
Insights into gratitude from open-ended qualitative interviews
Creators: name: Cooper, SA
Publisher: name: University Of Tasmania
Year: 2023

description: Research within the relatively new scientific field of gratitude has rapidly expanded over the last decade and a half, inspired by strong positive links with well-being and mental health. There is currently a lack of consensus as to how the term gratitude is defined and conceptualised, and the field lacks a solid theoretical basis. The aim of the current project was to obtain a deeper understanding of the experiences or things for which people are grateful, and the underlying cognitive processes which underpin their gratitude experience. Open ended qualitative interviews were conducted individually with 12 undergraduate students. Participants were asked to talk about \things or experiences\" which they considered beneficial. To reduce the likelihood of socially desirable responding the terms \"gratitude\" and \"appreciation\" were not used. Thematic analysis revealed three main domains in which gratitude was experienced: Close Personal Relationships (including sub themes of Family and Friends); Adversity and Personal Change (including sub themes of Self and Others); and Self Development Pursuits. Within these themes the capacity for gratitude to change over time was apparent. Exploration of the specific cognitive appraisals associated with participants' gratitude experiences led to the modification and extension of an existing model of gratitude. The modified model represents the cognitive appraisals which can underpin the experience of general gratitude and is not limited to prototypical gratitude which involves the deliberate act of another. The model can also account for changes in gratitude over time in relation to a particular phenomenon. Potential applications for research findings to inform the development of more informative gratitude measures and targeted gratitude interventions are discussed."
title: The “Buy Side” View on CEO Pay
Creators: name: Larcker, David F.
name: Sheehan, Brendan
name: Tayan, Brian
Publisher: name: Corporate Governance Research Initiative
Year: 2016

description: Executive compensation is a highly controversial topic. Journalists, governance commentators, and members of the American public believe that the majority of CEOs are overpaid. Missing from the discussion, however, is the viewpoint of the institutional portfolio managers that owns shares in these corporations and make buy and sell decisions. In this Closer Look, we review proprietary survey data from Rivel Research Group examining how institutional (“buy-side”) investors view CEO compensation. We ask: How do buy-side investors and the general public differ in their evaluation of executive compensation? Which constituency is “correct”? What performance metrics are more effective in linking pay with performance: operating or stock-price metrics? How much downside risk should an executive be exposed to?
Microstate Geometries and Entropy Enhancement
Creators: name: Warner, Nicholas P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In string theory, black-hole backgrounds are far from unique and there are large families of completely smooth, horizonless geometries with the same structure as a black hole from infinity down to the neighborhood of the black-hole horizon. These microstate geometries cap off in foam of topological bubbles. I review some of the recent progress in constructing these smooth horizonless geometries and discuss some of the physical implications.
description: 19 pages, 2 figures. Contribution to the proceedings of "30 Years of Mathematical Methods in High Energy Physics - In honor of Professor Tohru Eguchi's 60th Birthday."
Additional file 1 of SRSF1 regulates primordial follicle formation and number determination during meiotic prophase I
Creators: name: Sun, Longjie
name: Lv, Zheng
name: Chen, Xuexue
name: Wang, Chaofan
name: Lv, Pengbo
name: Yan, Lu
name: Tian, Shuang
name: Xie, Xiaomei
name: Yao, Xiaohong
name: Liu, Jingjing
name: Wang, Zhao
name: Luo, Haoshu
name: Cui, Sheng
name: Liu, Jiali
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Fig. S1. The expression pattern of SRSF1 in ovarian development and ageing. a The expression of Srsf1 during ovarian development and ageing. Real-time qPCR data were normalized to Gapdh. b Western blotting of SRSF1 expression in 17.5 dpc Ctrl and cKO ovaries. c The relative protein expression level of SRSF1 is shown in ovarian development and ageing. ACTB served as a loading control. The value in 12 M ovaries was set as 1.0. d Immunostaining was performed using VASA and SRSF1 antibodies from NB, 6 W, and 10 M ovaries. DNA was stained with DAPI. Scale bar, 10 μm. NB, newborn; W, week; M, month.
The association between attention deficit hyperactivity disorder and attachment in an adult community sample
Creators: name: Devlin, E
Publisher: name: University Of Tasmania
Year: 2023

description: The current paper utilises a structural equation modelling (SEM) approach to examine the structure of attention deficit/hyperactivity disorder (ADHD) in adulthood and assess the relation of IA and HI ADHD symptom domains with anxious and avoidant attachment dimensions. The study compared the 2-factor model with a bi-factor model of ADHD. The sample size for the present study was 326 adults, comprising 237 females (72.7%) and 89 males (27.3%) with an age range of 18-73 years inclusive. Participants were 326 adults (72.7% male; n=237 and 27.3% female; n=89) ranging from 18 to 73 years old. A bi-factor model of ADHD exhibited the best fit compared to the 2-factor model, suggesting it may be a better structural model for the organisation of ADHD symptoms in adults. Results suggest ADHD appears to be comprised of a single factor that captures common variance in ADHD symptom domains, as well as two separate inattention and hyperactivityimpulsivity factors that capture unique variance. The ADHD general factor was additionally found to be significantly related to insecure attachment, specifically anxious attachment but not avoidant attachment.
"Old" Locked Inflation
Creators: name: Liu, Yang
name: Piao, Yun-Song
name: Si, Zong-Guo
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we revisit the idea of locked inflation, which does not require a potential satisfying the normal slow-roll condition, but suffers from the problems associated with "saddle inflation". We propose a scenario based on locked inflation, however, with an alternative evolution mechanism of the "waterfall field" $ϕ$. Instead of rolling down along the potential, the $ϕ$ field will tunnel to end the inflation stage like in old inflation, by which the saddle inflation could be avoided. Further, we study a cascade of old locked inflation, which can be motivated by the string landscape. Our model is based on the consideration of making locked inflation feasible so as to give a working model without slow roll; It also can be seen as an effort to embed the old inflation in string landscape.
description: 18 pages, 3 figures, references added
Additional file 1 of A fully human connective tissue growth factor blocking monoclonal antibody ameliorates experimental rheumatoid arthritis through inhibiting angiogenesis
Creators: name: Qin, Yang
name: Wu, Gan
name: Jin, Jiayi
name: Wang, Hao
name: Zhang, Jiani
name: Liu, Li
name: Zhao, Heping
name: Wang, Jianguang
name: Yang, Xinyu
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine

description: Supplementary Material 1
On the integrality of the Taylor coefficients of mirror maps, II
Creators: name: Krattenthaler, Christian
name: Rivoal, Tanguy
Publisher: name: arXiv
Year: 2009
Subjects: subject: Number Theory (math.NT)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary 11S80; Secondary 11J99 14J32 33C20

description: We continue our study begun in "On the integrality of the Taylor coefficients of mirror maps" (arXiv:0907.2577) of the fine integrality properties of the Taylor coefficients of the series ${\bf q}(z)=z\exp({\bf G}(z)/{\bf F}(z))$, where ${\bf F}(z)$ and ${\bf G}(z)+\log(z) {\bf F}(z)$ are specific solutions of certain hypergeometric differential equations with maximal unipotent monodromy at $z=0$. More precisely, we address the question of finding the largest integer $v$ such that the Taylor coefficients of $(z ^{-1}{\bf q}(z))^{1/v}$ are still integers. In particular, we determine the Dwork-Kontsevich sequence $(u_N)_{N\ge1}$, where $u_N$ is the largest integer such that $q(z)^{1/u_N}$ is a series with integer coefficients, where $q(z)=\exp(G(z)/F(z))$, $F(z)=\sum_{m=0}^{\infty} (Nm)! z^m/m!^N$ and $G(z)=\sum_{m=1}^{\infty} (H_{Nm}-H_m)(Nm)! z^m/m!^N$, with $H_n$ denoting the $n$-th harmonic number, conditional on the conjecture that there are no prime number $p$ and integer $N$ such that the $p$-adic valuation of $H_N-1$ is strictly greater than 3.
description: 27 pages, AmS-LaTeX. This is the second part of an originally larger paper (arXiv:0709.1432) of the same title. The first part is arXiv:0907.2577. This final version is to appear in Commun. Number Theory Phys
Comments on a Massless Neutralino
Creators: name: Dreiner, H. K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider first an interesting connection between the development of physics and the Boston Red Sox. We then discuss in detail the collider phenomenology, as well as precision electroweak observables of a very light neutralino. We conclude by considering also the astrophysics and cosmology of a very light neutralino. We find that a massless neutralino is consistent with all present data.
description: 8 pages, 11 figures, based on talk given at SUSY 09, submitted to proceedings, reference added
title: Μοναξιά στους κρατούμενους και παρεμβάσεις κοινωνικών λειτουργών
title: Loneliness in prisoners and interventions for social workers
titleType: AlternativeTitle
Creators: name: Νικολαΐδου, Αθανασία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Μοναξιά
Κρατούμενοι
Παρεμβάσεις
Κοινωνικοί λειτουργοί

description: Η παρούσα πτυχιακή εργασία μέσω της βιβλιογραφικής επισκόπησης επιδιώκει να διερευνήσει το φαινόμενο της μοναξιάς, συγκεκριμένα στον πληθυσμό των κρατουμένων και να αναδείξει υπάρχουσες παρεμβάσεις για την μοναξιά, οι οποίες μπορούν να αξιοποιηθούν από τους κοινωνικούς λειτουργούς. Αρχικά, αναλύεται η έννοια και τα είδη της μοναξιάς, αποσαφηνίζεται η διαφοροποίησή της από άλλες συναφείς έννοιες και γίνεται αναφορά σε ορισμένα εργαλεία μέτρησής της. Στη συνέχεια, γίνεται απόπειρα να αναδειχθεί η ανάγκη για στροφή του ενδιαφέροντος της κοινωνικής εργασίας και της κοινωνικής πολιτικής στο ζήτημα της μοναξιάς, εξαιτίας της σοβαρής υποβάθμισης που επιφέρει στην ευημερία των ατόμων. Ειδικότερα, πραγματεύεται τη μοναξιά στην πληθυσμιακή ομάδα των κρατουμένων μέσω της συνοπτικής παρουσίασης του σωφρονιστικού συστήματος της Ελλάδας και των συνθηκών που επικρατούν στα σωφρονιστικά καταστήματα γενικότερα τα οποία καθιστούν τους κρατούμενος πιο ευάλωτους στη μοναξιά. Ακολούθως, εστιάζει στην εξέταση πιο ειδικών ζητημάτων μοναξιάς στη φυλακή, διότι αναλύονται συγκεκριμένες κατηγορίες κρατουμένων και συνθήκες. Αναλυτικότερα, την εργασία απασχολεί το ζήτημα της μοναξιάς στη φυλακή ανάλογα με την ηλικία των κρατουμένων, την ύπαρξη οικογένειας και τη συνθήκη της πανδημίας COVID-19. Επιπλέον, παρουσιάζονται τρόποι με τους οποίους μπορεί να μειωθεί το αίσθημα της μοναξιάς και παρεμβάσεις που έχουν εφαρμοστεί σε πληθυσμούς εκτός αλλά και εντός φυλακής. Τέλος, διερευνάται η αποτελεσματικότητα των παρεμβάσεων και οι παράγοντες που συμβάλουν στην επιτυχή ή μη έκβασή τους τόσο για τον πληθυσμό εκτός φυλακής όσο και για των κρατουμένων.
Comorbidity of internalising disorders in children and adolescents with low IQ : an item response theory approach
Creators: name: Freeman, JM
Publisher: name: University Of Tasmania
Year: 2023

description: The main purpose of the present study was to employ 2-parameter logistic item response theory modelling (2-PLM) to examine the internalising dimension, comprising diagnoses of common mood and anxiety disorders, within a low IQ (<80) child and adolescent population. This was done to investigate the validity of a dimensional approach to mood and anxiety comorbidity, as well as investigate the patterns of mood and anxiety comorbidity among a low-IQ population. Diagnoses were derived from interviews of 310 clinic-referred low IQ children and adolescents. The results of the present study suggested that all disorders were not only strong discriminators of the internalising dimension, but measured the dimension with more precision in the upper half of the trait continuum. The study also found support for the concurrent validity of the internalising dimension, referring to medium to large effect size associations with depression and anxiety scores of other measures. The implications for the study of comorbidity in this type of population, and the taxonomy of the mood and anxiety disorders in diagnostic manuals and conceptualisations are discussed.
Children in foster care : the effect of age and multiple placement disruption on psychopathology
Creators: name: Giaquinta, MR
Publisher: name: University Of Tasmania
Year: 2023

description: Unfortunately, a large number of children are subjected to abuse or neglect in their family home, rendering such environments unsuitable. Foster care is an alternative living arrangement organised by Child Protection Services provided to some of these maltreated children. In order to advocate for the wellbeing of children in foster care, it is essential to gain insight into the factors that influence psychological adjustment in the foster care system. The present study aimed to explore the influence of multiple placement disruption, reunification, and age, on the psychopathology of children in foster care. The study utilised a clinical sample to compare the severity of symptoms among children in foster care, and children who had never experienced foster care. Findings indicated that overall, children and adolescents who had experienced multiple foster care placements, or had been successfully reunified, demonstrated more severe psychopathological symptoms in comparison to those who had never experienced foster care. Further, externalising symptoms were found to be more prevalent among foster care children than internalising symptoms. Regarding age, no significant difference was found between children and adolescents for the experience of psychopathological problems. Findings and implications for further research are discussed.
The characteristics of participants in an Indian adult education program
Creators: name: Blunt, Adrian
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this study was to identify and describe certain socioeconomic and socio-psychological characteristics which differentiate the Indian adult education participant from the non-participant, and which collectively contribute to an understanding of Indian adult education participation. The study was conducted on the Mount Currie Indian Reserve in the Pemberton Valley of British Columbia, The analytical survey method was used and data was collected by means of structured interviews with a random sample of eighty-six adult band members. Two hypotheses were tested to determine whether or not there were any statistically significant differences between adult education participants and non-participants with respect to seventeen socio-economic and thirteen socio-psychological variable characteristics. A third hypothesis was tested to determine whether or not there were any significant differences between the variables studied when they were considered simultaneously or independently as predictors of participation. Of the eighty-six respondents, fourty-two had enrolled in an adult education class during the preceding three years and were classed as participants. Statistically significant differences were found between the participants and non-participants with respect to eight of the socio-economic characteristics studied including sex, wish for further adult education participation, social participation, occupational prestige of desired job, occupational prestige of desired vocational training, receipt of educational assistance, receipt of unemployment insurance assistance, and total annual income. Of the socio-psychological characteristics studied, statistically significant differences were found between the participant's and non-participant's levels of alienation, activism, trust, family integration, and attitudes towards education. The most powerful single predictor of participation was found to be alienation, with the least alienated being those most likely to participate. However, five other variables including total annual income, number of children, social participation, trust and integration with relatives when considered simultaneously were found to be more powerful as joint predictors of participation than any single independent variable.
Fundamental high pressure calibration from all-electron quantum Monte Carlo calculations
Creators: name: Esler, K. P.
name: Cohen, R. E.
name: Militzer, B.
name: Kim, Jeongnim
name: Needs, R. J.
name: Towler, M. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We develop an all-electron quantum Monte Carlo (QMC) method for solids that does not rely on pseudopotentials, and use it to construct a primary ultra-high pressure calibration based the equation of state of cubic boron nitride(c-BN). We compute the static contribution to the free energy with QMC, and obtain the phonon contribution from density functional theory, yielding a high-accuracy calibration up to 900 GPa usable directly in experiment. Furthermore, we compute the anharmonic Raman frequency shift with QMC as a function of pressure and temperature, allowing optical pressure calibration in table-top experiments. In contrast to present experimental approaches, small systematic errors in the theoretical EOS do not increase with pressure, and no extrapolation is needed. This all-electron methodology is generally applicable to first-row solids, and can be used to provide a new reference for ab initio calculations of solids and to benchmark pseudopotential accuracy.
description: 4 pages, 2 figures, 1 table
Coexistence curve of sulfur hexafluoride in the critical region.
Creators: name: Ohrn, Kenneth Edward
Publisher: name: University of British Columbia
Year: 2011

description: This thesis studies the shape of the coexistence curve of sulfur hexafluoride in the critical region. The difference in index of refraction between the liquid and vapour phases is shown to be proportional to the difference in density. Thus the critical exponent " β " is measured. These values were found from linear fits to log-log data: β= 0.339 ± 0.002 - ε ≻ 10 ̄ ² β= 0.347 ± 0.002 - ε ≺ 3 x 10 ̄ ³ Here, "Tc" is the critical temperature and [ Formula omitted ]The temperature range covered is 3 x 10 ̄ ⁶<- ε ≺ 6 x 10 ̄ ². The critical index of refraction (nc) is measured, with the result nc = 1.093 ± 0.002
New avenue to the Parton Distribution Functions: Self-Organizing Maps
Creators: name: Carnahan, J.
name: Honkanen, H.
name: Liuti, S.
name: Loitiere, Y.
name: Reynolds, P. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Neural network algorithms have been recently applied to construct Parton Distribution Function (PDF) parametrizations which provide an alternative to standard global fitting procedures. We propose a technique based on an interactive neural network algorithm using Self-Organizing Maps (SOMs). SOMs are a class of clustering algorithms based on competitive learning among spatially-ordered neurons. Our SOMs are trained on selections of stochastically generated PDF samples. The selection criterion for every optimization iteration is based on the features of the clustered PDFs. Our main goal is to provide a fitting procedure that, at variance with the standard neural network approaches, allows for an increased control of the systematic bias by enabling user interaction in the various stages of the process.
description: 34 pages, 17 figures, minor revisions, 2 figures updated
Quantum spin Hall phases
Creators: name: Murakami, Shuichi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We review our recent theoretical works on the the quantum spin Hall effect. First we compare edge states in various 2D systems, and see whether they are robust or fragile against perturbations. Through the comparisons we see the robust nature of edge states in 2D quantum spin Hall phases. We see how it is protected by the Z_2 topological number, and reveal the nature of the Z_2 topological number by studying the phase transition between the quantum spin Hall and insulator phases. We also review our theoretical proposal of the ultrathin bismuth film as a candidate to the 2D quantum spin Hall system.
description: 23 pages, 11 figures
Floquet topological transitions in extended Kane-Mele models with disorder
Creators: name: Du, Liang
name: Schnase, Paul Daniel
name: Barr, Ariel R.
name: Fiete, Gregory A.
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Kane-Mele

description: In this work we use Floquet theory to theoretically study the influence of circularly polarized light on disordered two-dimensional models exhibiting topological transitions. We find circularly polarized light can induce a topological transition in extended Kane-Mele models that include additional hopping terms and on-site disorder. The topological transitions are understood from the Floquet-Bloch band structure of the clean system at high symmetry points in the first Brillouin zone. The light modifies the equilibrium band structure of the clean system in such a way that the smallest gap in the Brillouin zone can be shifted from the M points to the K(K′) points, the Γ point, or even other lower symmetry points. The movement of the minimal gap point through the Brillouin zone as a function of laser parameters is explained in the high frequency regime through the Magnus expansion. In the disordered model, we compute the Bott index to reveal topological phases and transitions. The disorder can induce transitions from topologically non-trivial states to trivial states or vice versa, both examples of Floquet topological Anderson transitions. As a result of the movement of the minimal gap point through the Brillouin zone as a function of laser parameters, the nature of the topological phases and transitions is laser-parameter dependent--a contrasting behavior to the Kane-Mele model.
Synchronization of spatio-temporal chaos as an absorbing phase transition: a study in 2+1 dimensions
Creators: name: Ginelli, F.
name: Cencini, M.
name: Torcini, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The synchronization transition between two coupled replicas of spatio-temporal chaotic systems in 2+1 dimensions is studied as a phase transition into an absorbing state - the synchronized state. Confirming the scenario drawn in 1+1 dimensional systems, the transition is found to belong to two different universality classes - Multiplicative Noise (MN) and Directed Percolation (DP) - depending on the linear or nonlinear character of damage spreading occurring in the coupled systems. By comparing coupled map lattice with two different stochastic models, accurate numerical estimates for MN in 2+1 dimensions are obtained. Finally, aiming to pave the way for future experimental studies, slightly non-identical replicas have been considered. It is shown that the presence of small differences between the dynamics of the two replicas acts as an external field in the context of absorbing phase transitions, and can be characterized in terms of a suitable critical exponent.
description: Submitted to Journal of Statistical Mechanics: Theory and Experiment
Dynamical recovery of SU(2) symmetry in the mass-quenched Hubbard model
Creators: name: Du, Liang
name: Fiete, Gregory A.
Publisher: name: The University of Texas at Austin
Year: 2017
Subjects: Hubbard

description: We use non-equilibrium dynamical mean-field theory with iterative perturbation theory as an impurity solver to study the recovery of SU(2) symmetry in real-time following a hopping integral parameter quench from a mass-imbalanced to a mass-balanced single-band Hubbard model at half-filling. A dynamical order parameter γ(t) is defined to characterize the evolution of the system towards SU(2) symmetry. By comparing the momentum dependent occupation from an equilibrium calculation (with the SU(2) symmetric Hamiltonian after the quench at an effective temperature) with the data from our non-equilibrium calculation, we conclude that the SU(2) symmetry recovered state is a thermalized state. Further evidence from the evolution of the density of states supports this conclusion. At the same time, we find the order parameter in the weak Coulomb interaction regime undergoes an approximate exponential decay. We numerically investigate the interplay of the relevant parameters (initial temperature, Coulomb interaction strength, initial mass-imbalance ratio) and their combined effect on the thermalization behavior. Finally, we study evolution of the order parameter as the hopping parameter is changed with either a linear ramp or a pulse. Our results can be useful in strategies to engineer the relaxation behavior of interacting, quantum many-particle systems.
Silicon carbide absorption features: dust formation in the outflows of extreme carbon stars
Creators: name: Speck, Angela K.
name: Corman, Adrian B.
name: Wakeman, Kristina
name: Wheeler, Caleb H.
name: Thompson, Grant
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Infrared carbon stars without visible counterparts are generally known as extreme carbon stars. We have selected a subset of these stars with absorption features in the 10-13 $μ$m range, which has been tentatively attributed to silicon carbide (SiC). We add three new objects meeting these criterion to the seven previously known, bringing our total sample to ten sources. We also present the result of radiative transfer modeling for these stars, comparing these results to those of previous studies. In order to constrain model parameters, we use published mass-loss rates, expansion velocities and theoretical dust condensation models to determine the dust condensation temperature. These show that the inner dust temperatures of the dust shells for these sources are significantly higher than previously assumed. This also implies that the dominant dust species should be graphite instead of amorphous carbon. In combination with the higher condensation temperature we show that this results in a much higher acceleration of the dust grains than would be expected from previous work. Our model results suggest that the very optically thick stage of evolution does not coincide with the timescales for the superwind, but rather, that this is a very short-lived phase. Additionally, we compare model and observational parameters in an attempt to find any correlations. Finally, we show that the spectrum of one source, IRAS 17534$-$3030, strongly implies that the 10-13 $μ$m feature is due to a solid state rather than a molecular species.
description: 13 Figures