cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cross-Layer MIMO Transceiver Optimization for Multimedia Streaming in Interference Networks
Creators: name: Zhang, Fan
name: Lau, Vincent K. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: In this paper, we consider dynamic precoder/decorrelator optimization for multimedia streaming in MIMO interference networks. We propose a truly cross-layer framework in the sense that the optimization objective is the application level performance metrics for multimedia streaming, namely the playback interruption and buffer overflow probabilities. The optimization variables are the MIMO precoders/decorrelators at the transmitters and the receivers, which are adaptive to both the instantaneous channel condition and the playback queue length. The problem is a challenging multi-dimensional stochastic optimization problem and brute-force solution has exponential complexity. By exploiting the underlying timescale separation and special structure in the problem, we derive a closed-form approximation of the value function based on continuous time perturbation. Using this approximation, we propose a low complexity dynamic MIMO precoder/decorrelator control algorithm by solving an equivalent weighted MMSE problem. We also establish the technical conditions for asymptotic optimality of the low complexity control algorithm. Finally, the proposed scheme is compared with various baselines through simulations and it is shown that significant performance gain can be achieved.
description: 16 pages, 12 figures, 1 table. This paper has been accepted by the IEEE Transactions on Signal Processing
The Besancon Galaxy model renewed I. Constraints on the local star formation history from Tycho data
Creators: name: Czekaj, M. A.
name: Robin, A. C.
name: Figueras, F.
name: Luri, X.
name: Haywood, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The understanding of Galaxy evolution can be facilitated by the use of population synthesis models, which allows us to test hypotheses on the star formation history, star evolution, and chemical and dynamical evolution of the Galaxy. The new version of the Besancon Galaxy model (hereafter BGM) aims to provide a more flexible and powerful tool to investigate the initial mass function (IMF) and star formation rate (SFR) of the Galactic disc. We present a new strategy for the generation of thin disc stars, which assumes the IMF, SFR and evolutionary tracks as free parameters. We have updated most of the ingredients for the star count production and, for the first time, binary stars are generated in a consistent way. The local dynamical self-consistency is maintained in this new scheme. We then compare simulations from the new model with Tycho-2 data and the local luminosity function, as a first test to verify and constrain the new ingredients. The effects of changing thirteen different ingredients of the model are systematically studied. For the first time, a full sky comparison is performed between BGM and data. This strategy allows us to constrain the IMF slope at high masses, which is found to be close to 3.0 and excludes a shallower slope such as Salpeter's one. The SFR is found decreasing whatever IMF is assumed. The model is compatible with a local dark matter density of 0.011 Mo/pc^3 implying that there is no compelling evidence for the significant amount of dark matter in the disc. While the model is fitted to Tycho-2 data, which is a magnitude limited sample with V<11, we check that it is still consistent with fainter stars. The new model constitutes a new basis for further comparisons with large scale surveys and is being prepared to become a powerful tool for the analysis of the Gaia mission data.
description: accepted in Astronomy and Astrophysics, 20 pages, 16 figures
Chaos from the ring string in Gauss-Bonnet black hole in $AdS_5$ space
Creators: name: Ma, Da-Zhu
name: Wu, Jian-Pin
name: Zhang, Jifang
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: By the Poincare sections, the dynamical behaviors of the ring string in the AdS-Gauss-Bonnet (AdS-GB) black hole are studied. A threshold value of the Gauss-Bonnet (GB) parameter $λ$ are found by the numerical method, below which the behavior of this dynamical system is no-chaotic and above which the behavior becomes gradually chaotic. The chaotic behavior becomes stronger with the increases of GB parameter. It is different from the case in the AdS-Schwarzschild black hole, which is weakly chaotic. Furthermore, we confirm our findings by the Fast Lyapunov indicators.
description: 16 pages, 3 figures
Decision aids to support patients and surrogates in ICU: A scoping review
Creators: name: Yuexian Tao
name: Zhou, Qi
name: Lei, Yuling
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medical Education
subject: Nursing
subject: FOS: Health sciences
subject: Medicine and Health Sciences
subject: Critical Care Nursing

description: Objective: The purpose of this scoping review is to synthesize the basic situation, intervention effectiveness, and acceptability of decision aids in the ICU. Method: A systematic search of PubMed, Web of Science, Embase, and Scopus was undertaken for identifying relevant reviews on the application of decision aids in ICU. The methodological framework proposed by Arksey and O'Malley was used to guide the scoping review. Results: A total of 2731 articles were retrieved from four electronic databases. After the dual, blinded screening of titles and abstracts, 14 articles were ultimately included. Conclusion: Decision aids in ICU focus on life-sustaining treatment and goals of care, and there is a trend to move from a paper-based format to a web-based format, as well as a trend toward personalized predictive models.
Gendered citation practices in the field of communication
Creators: name: Wang, Xinyi
name: Dworkin, Jonathan
name: Zhou, D.
name: Stiso, Jennifer
name: Falk, Emily B.
name: Bassett, Danielle S.
name: Zurn, Perry
name: Lydon-Staley, David M.
Publisher: name: American University
Year: 2023

description: In disciplines outside of communication, papers with women as first and last (i.e. senior) authors attract fewer citations than papers with men in those positions. Using data from 14 communication journals from 1995 to 2018, we find that reference lists include more papers with men as first and last author, and fewer papers with women as first and last author, than would be expected if gender were unrelated to referencing. This imbalance is driven largely by the citation practices of men and is slowly decreasing over time. The structure of men’s co-authorship networks partly accounts for the observed over-citation of men by other men. We discuss ways researchers might approach gendered citations in their work.
Nanostructured flexible radiation sensors
Creators: name: Favaro, Matteo
Publisher: name: Universit� degli studi di Trento
Year: 2021

description: Flexible scintillating radiation detectors have gained increasing attention in the scientific community in the last decade. They represent a fast and easy way for monitoring the impinging radiation in real time and acquire the dose released in medical treatments, like cancer radio- or proton-therapy sessions. Flexible linear-chain polysiloxane detectors offer the possibility to overcome geometrical limitations, they possess superior optical transparency and flexibility, and can be obtained with contained production costs and times, making them highly competitive with respect to traditional single-crystals and plastics. Unlike phenyl-containing siloxanes, linear polysiloxanes does not show direct interaction with the impinging radiation, therefore they can be used just as matrices for hosting luminescent materials, such as nanocrystals or nanopowders. Quantum dots (QDs) are nanocrystals showing quantum confinement effects, with an incredible light yield, a tunable emission wavelength and a fast decay lifetime. For these reasons, they are worth being incorporated in siloxane-based scintillators as primary dyes, without the need of complex ternary systems. Part of this thesis analyzes the effects of ionizing radiation on the luminescence and temporal response of QD-loaded polysiloxanes for radiation detection and monitoring, with special focus on real-time measurements under proton beam. Another possibility is to embed luminescent nanopowders, such as zinc oxide (ZnO) and reduced zinc oxide (ZnO:Zn). The Zn-rich form shows a remarked green luminescence, with increasing light yield as a function of the reduction degree, i.e. zinc content. In view of the above, this thesis reports the advances on polysiloxanes loaded with ZnO and ZnO:Zn phosphors. The core of the thesis is devoted to the progresses in ZnO production and treatment for the realization of multi-layered flexible scintillators. A special focus is putted on a novel production route based on atmospheric pressure plasma (APPJ), that allows for the co-deposition of ZnO-loaded plasma polymers and for the doping via liquid precursor solution.
The temperature spectrum generated by frictional heating in isotropic turbulence
Creators: name: Bos, Wouter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In every turbulent flow with non-zero viscosity, heat is generated by viscous friction. This heat is then mixed by the velocity field. We consider how heat fluctuations generated this way are injected and distributed over length scales in isotropic turbulence. A triadic closure is derived and numerically integrated. It is shown how the heat fluctuation spectrum depends on the Reynolds and Prandtl numbers.
Modern Anomaly Detection: Benchmarking, Scalability and a Novel Approach
Creators: name: Pasupathipillai, Sivam
Publisher: name: Universit� degli studi di Trento
Year: 2020

description: Anomaly detection consists in automatically detecting the most unusual elements in a data set. Anomaly detection applications emerge in domains such as computer security, system monitoring, fault detection, and wireless sensor networks. The strategic importance of detecting anomalies in these domains makes anomaly detection a critical data analysis task. Moreover, the contextual nature of anomalies, among other issues, makes anomaly detection a particularly challenging problem. Anomaly detection has received significant research attention in the last two decades. Much effort has been invested in the development of novel algorithms for anomaly detection. However, several open challenges still exist in the field.This thesis presents our contributions toward solving these challenges. These contributions include: a methodological survey of the recent literature, a novel benchmarking framework for anomaly detection algorithms, an approach for scaling anomaly detection techniques to massive data sets, and a novel anomaly detection algorithm inspired by the law of universal gravitation. Our methodological survey highlights open challenges in the field, and it provides some motivation for our other contributions. Our benchmarking framework, named BAD, tackles the problem of reliably assess the accuracy of unsupervised anomaly detection algorithms. BAD leverages parallel and distributed computing to enable massive comparison studies and hyperparameter tuning tasks. The challenge of scaling unsupervised anomaly detection techniques to massive data sets is well-known in the literature. In this context, our contributions are twofold: we investigate the trade-offs between a single-threaded implementation and a distributed approach considering price-performance metrics, and we propose a scalable approach for anomaly detection algorithms to arbitrary data volumes. Our results show that, when high scalability is required, our approach can handle arbitrarily large data sets without significantly compromising detection accuracy. We conclude our contributions by proposing a novel algorithm for anomaly detection, named Gravity. Gravity identifies anomalies by considering the attraction forces among massive data elements. Our evaluation shows that Gravity is competitive with other popular anomaly detection techniques on several benchmark data sets. Additionally, the properties of Gravity makes it preferable in cases where hyperparameter tuning is challenging or unfeasible.
Additional file 1 of Diurnal timing of physical activity and risk of colorectal cancer in the UK Biobank
Creators: name: Stein, Michael J.
name: Baurecht, Hansjörg
name: Bohmann, Patricia
name: Fervers, Béatrice
name: Fontvieille, Emma
name: Freisling, Heinz
name: Friedenreich, Christine M.
name: Konzok, Julian
name: Peruchet-Noray, Laia
name: Sedlmeier, Anja M.
name: Leitzmann, Michael F.
name: Weber, Andrea
Publisher: name: figshare
Year: 2024
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer

description: Additional file 1: Supplement S1. Flowchart for inclusion and exclusion of participants. Supplement S2. Directed acyclic graph. Supplement S3. Covariates for Cox regression. Supplement S4. Missing information for covariates by fPC score quantiles. Supplement S5. Description of the physical activity patterns. Supplement S6. Correlation coefficients between fPCs and blood biomarkers. Supplement S7. Cox model results after exclusion of the first two years of follow-up. Supplement S8. Cox model results after restricting the analysis to never smokers. Supplement S9. Cox model results without adjustment for cardiometabolic disease status. Supplement S10. Cox model results with adjustment for shift work status. Supplement S11. Interaction terms for fPCs and covariates. Supplement S12. Sensitivity fPCA with different bandwidth estimations and kernel smoothers. Supplement S13. First four fPCs (A) and positive and negative scorers (B) when using an Epanechnikov kernel. Supplement S14. Correlation coefficients for fPCs and derived accelerometry.
Beta regression for time series analysis of bounded data, with application to Canada Google${}^\circledR$ Flu Trends
Creators: name: Guolo, Annamaria
name: Varin, Cristiano
Publisher: name: arXiv
Year: 2014
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Bounded time series consisting of rates or proportions are often encountered in applications. This manuscript proposes a practical approach to analyze bounded time series, through a beta regression model. The method allows the direct interpretation of the regression parameters on the original response scale, while properly accounting for the heteroskedasticity typical of bounded variables. The serial dependence is modeled by a Gaussian copula, with a correlation matrix corresponding to a stationary autoregressive and moving average process. It is shown that inference, prediction, and control can be carried out straightforwardly, with minor modifications to standard analysis of autoregressive and moving average models. The methodology is motivated by an application to the influenza-like-illness incidence estimated by the Google${}^\circledR$ Flu Trends project.
description: Published in at http://dx.doi.org/10.1214/13-AOAS684 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Magnonic Band Structure, Complete Bandgap and Collective Spin Wave Excitation in Nanoscale Two--Dimensional Magnonic Crystals
Creators: name: Kumar, D.
name: Kłos, J. W.
name: Krawczyk, M.
name: Barman, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present the observation of a complete bandgap and collective spin wave excitation in two-dimensional magnonic crystals comprised of arrays of nanoscale antidots and nanodots, respectively. Considering that the frequencies dealt with here fall in the microwave band, these findings can be used for the development of suitable magnonic metamaterials and spin wave based signal processing. We also present the application of a numerical procedure, to compute the dispersion relations of spin waves for any high symmetry direction in the first Brillouin zone. The results obtained from this procedure has been reproduced and verified by the well established plane wave method for an antidot lattice, when magnetization dynamics at antidot boundaries is pinned. The micromagnetic simulation based method can also be used to obtain iso--frequency countours of spin waves. Iso--frequency contours are analougous of the Fermi surfaces and hence, they have the potential to radicalize our understanding of spin wave dynamics. The physical origin of bands, partial and full magnonic bandgaps has been explained by plotting the spatial distribution of spin wave energy spectral density. Although, unfettered by rigid assumptions and approximations, which afflict most analytical methods used in the study of spin wave dynamics, micromagnetic simulations tend to be computationally demanding. Thus, the observation of collective spin wave excitation in the case of nanodot arrays, which can obviate the need to perform simulations may also prove to be valuable.
Киносценарный диалог с классической русской литературой
Creators: name: Мартьянова Ирина Анатольевна
Publisher: name: Мир русского слова
Year: 2016
Subjects: КИНОСЦЕНАРИЙ
РУССКАЯ ЛИТЕРАТУРА
ТЕКСТ
ЛИТЕРАТУРНАЯ КИНЕМАТОГРАФИЧНОСТЬ
ЭКРАНИЗАЦИЯ
ИНТЕРПРЕТАЦИЯ
ДИАЛОГ
SCREENPLAY
RUSSIAN LITERATURE
TEXT
LITERARY CINEMATOGRAPHY
ADAPTATION
INTERPRETATION
DIALOG

description: Статья посвящена взаимоотношениям киносценария и классической русской литературы, понимаемым как своеобразный диалог. Анализируются текстовые параметры киносценария и стратегии жанровой трансформации литературного первоисточника, его интерпретационные ресурсы. Важнейший из них, литературная кинематографичность, определяется как характеристика текста с преимущественно монтажной техникой композиции, в котором различными, но прежде всего композиционно-синтаксическими средствами изображается динамическая ситуация наблюдения.
description: The paper analyses screenplay’s dialogue with classical Russian literature, the value of Russian adapted screenplay as verbal text, its relations with other text types, strategies of its transposing into the new genres. Literary cinematography is understood as the main interpretation resource and the characteristic of texts with montage-driven composition technique, where the visual images are represented dynamically through various, primarily compositional and syntactic means.
Additional file 1 of Clinical efficacy and safety of faecal microbiota transplantation in the treatment of irritable bowel syndrome: a systematic review, meta-analysis and trial sequential analysis
Creators: name: Lo, Shao-Wei
name: Hung, Tsung-Hsuan
name: Lin, Yen-Tsen
name: Lee, Chun-Shen
name: Chen, Chiung-Yu
name: Fang, Ching-Ju
name: Lai, Pei-Chun
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Supplementary material 1: Table 1. Search strategy
Active Matter Transport and Jamming on Disordered Landscapes
Creators: name: Reichhardt, C.
name: Reichhardt, C. J. Olson
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We numerically examine the transport of active run-and-tumble particles driven with a drift force over random disordered landscapes comprised of fixed obstacles. For increasing run lengths, the net particle transport initially increases before reaching a maximum and decreasing at larger run lengths. The transport reduction is associated with the formation of cluster or living crystal states that become locally jammed or clogged by the obstacles. We also find that the system dynamically jams at lower particle densities when the run length is increased. Our results indicate that there is an optimal activity level for active matter transport through quenched disorder, and could be important for understanding biological transport in complex environments or for applications of active matter particles in random media.
description: 7 pages, 6 postscript figures
Antimicrobial resistance and livestock trade for low and middle income countries : regional analysis of global coordination policies
Creators: name: Avraam, Charalampos
name: Lambrou, Anastasia S.
name: Jiang, Wei
name: Siddiqui, Sauleh
Publisher: name: American University
Year: 2023

description: Antimicrobial resistance is a threat to global health, aggravated by the use of antimicrobials in livestock production. Mitigating the growing economic costs related to antimicrobial use in livestock production requires strong global coordination, and to that end policy makers can leverage global and national food animal trade policies, such as bans and user fees. Evaluation of such policies requires representing the interactions between competing producers in the global meat market, which is usually out of the scope of statistical models. For that, we developed a game-theoretic food system model of global livestock production and trade between 18 countries and aggregate world regions. The model comprises the largest producing and consuming countries, the explicit interconnections between countries, and the use of antimicrobials in food animal production. Our model allows us to provide policy insights beyond standard literature and assess the trade-off between trade, cost of a policy, and antimicrobials-induced productivity. We studied three scenarios: global increased user fees on antimicrobials, a global ban of meat imports from Brazil, and a decrease in China's meat consumption. We found that a user fee that increases the price of antimicrobials by 50% globally leads to a 33% reduction in global antimicrobial use. However, participation of developing and emerging countries in the coordination scheme is jeopardized, since they become less competitive for meat sales compared to developed countries. When meat imports from Brazil are banned globally, importers of Brazil's meat would turn primarily to the U.S. to supplement their demand. Lastly, meeting China's medium-term lower meat consumption target would not affect global antimicrobial use, but could increase China's antimicrobial use by 11%. We highlighted the importance of trade for the outcome of a policy and concluded that global cooperation is required to align the incentives of all countries toward tackling antimicrobial resistance.
(Sr3La2O5)(Zn1-xMnx)2As2: A Bulk Form Diluted Magnetic Semiconductor isostructural to the "32522" Fe-based Superconductors
Creators: name: Man, Huiyuan
name: Qin, Chuan
name: Ding, Cui
name: Wang, Quan
name: Gong, Xin
name: Guo, Shengli
name: Wang, Hangdong
name: Chen, Bin
name: Ning, F. L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A new diluted magnetic semiconductor system, (Sr3La2O5)(Zn1-xMnx)2As2, has been synthesized and characterized. 10% Mn substitution for Zn in bulk form (Sr3La2O5)Zn2As2 results in a ferromagnetic ordering below Curie temperature, TC ~ 40 K. (Sr3La2O5)(Zn1-xMnx)2As2 has a layered crystal structure identical to that of 32522-type Fe based superconductors, and represents the fifth DMS family that has a direct counterpart among the FeAs high temperature superconductor families.
description: Accepted for publication in EPL
Additional file 2 of Clinical efficacy and safety of faecal microbiota transplantation in the treatment of irritable bowel syndrome: a systematic review, meta-analysis and trial sequential analysis
Creators: name: Lo, Shao-Wei
name: Hung, Tsung-Hsuan
name: Lin, Yen-Tsen
name: Lee, Chun-Shen
name: Chen, Chiung-Yu
name: Fang, Ching-Ju
name: Lai, Pei-Chun
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Supplementary material 2: Table 2. GRADE evidence profile: FMT for patients with IBS
A Decision Model for Supporting Task Allocation Processes in Global Software Development
Creators: name: Lamersdorf, Ansgar
name: Münch, Jürgen
name: Rombach, Dieter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Today, software-intensive systems are increasingly being developed in a globally distributed way. However, besides its benefit, global development also bears a set of risks and problems. One critical factor for successful project management of distributed software development is the allocation of tasks to sites, as this is assumed to have a major influence on the benefits and risks. We introduce a model that aims at improving management processes in globally distributed projects by giving decision support for task allocation that systematically regards multiple criteria. The criteria and causal relationships were identified in a literature study and refined in a qualitative interview study. The model uses existing approaches from distributed systems and statistical modeling. The article gives an overview of the problem and related work, introduces the empirical and theoretical foundations of the model, and shows the use of the model in an example scenario.
description: 15 pages. The final publication is available at http://link.springer.com/chapter/10.1007%2F978-3-642-02152-7_25
First and second sound in a two-dimensional dilute Bose gas across the Berezinskii-Kosterlitz-Thouless transition
Creators: name: Liu, Xia-Ji
name: Hu, Hui
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We theoretically investigate first and second sound of a two-dimensional (2D) atomic Bose gas in harmonic traps by solving Landau's two-fluid hydrodynamic equations. For an isotropic trap, we find that first and second sound modes become degenerate at certain temperatures and exhibit typical avoided crossings in mode frequencies. At these temperatures, second sound has significant density fluctuation due to its hybridization with first sound and has a divergent mode frequency towards the Berezinskii-Kosterlitz-Thouless (BKT) transition. For a highly anisotropic trap, we derive the simplified one-dimensional hydrodynamic equations and discuss the sound-wave propagation along the weakly confined direction. Due to the universal jump of the superfluid density inherent to the BKT transition, we show that the first sound velocity exhibits a kink across the transition. Our predictions can be readily examined in current experimental setups for 2D dilute Bose gases.
description: 5 pages, 4 figures
Defects induced ferromagnetism in plasma-enabled graphene nanopetals
Creators: name: Yue, Z. J.
name: Seo, D. H.
name: Ostrikov, K.
name: Wang, X. L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferromagnetism in graphene is fascinating, but it is still a big challenge for practical applications due to the weak magnetization. In order to enhance the magnetization, here, we design plasma-enabled graphene nanopetals with ultra-long defective edges of up to 105 m/g, ultra-dense lattice vacancies and hydrogen chemisorptions. The designed graphene nanopetals display robust ferromagnetism with large saturation magnetization of up to 2 emu/g at 5 K and 1.2 emu/g at room temperatures. This work identifies the plasma-enabled graphene nanopetals as a promising candidate for graphene-based magnetic devices.
Photoionization of bonding and antibonding-type atom-fullerene hybrid states in Cd@C$_{60}$ vs Zn@C$_{60}$60
Creators: name: Javani, Mohammad H.
name: De, Ruma
name: Madjet, Mohamed E.
name: Manson, Steven T.
name: Chakraborty, Himadri S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Powerful hybridization of the Cd 4$d$ state with the $d$-angular momentum state of C$_{60}$ $π$ symmetry is found in the local density approximation (LDA) structure of Cd@C$_{60}$ ground state. The photoionization of the resulting symmetric and antisymmetric levels are computed using the time dependent LDA method to include electron correlations. Cross sections exhibit effects of the C$_{60}$ plasmonic motion coherently coupled to the diffraction-type cavity oscillations induced by local emissions from C$_{60}$. The Cd@C$_{60}$ results exhibit a substantial difference from our previous results for Zn@C$_{60}$.
description: 6 pages, 4 figures, Submitted to J. Phys. B
Optimal variance estimation without estimating the mean function
Creators: name: Tong, Tiejun
name: Ma, Yanyuan
name: Wang, Yuedong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We study the least squares estimator in the residual variance estimation context. We show that the mean squared differences of paired observations are asymptotically normally distributed. We further establish that, by regressing the mean squared differences of these paired observations on the squared distances between paired covariates via a simple least squares procedure, the resulting variance estimator is not only asymptotically normal and root-$n$ consistent, but also reaches the optimal bound in terms of estimation variance. We also demonstrate the advantage of the least squares estimator in comparison with existing methods in terms of the second order asymptotic properties.
description: Published in at http://dx.doi.org/10.3150/12-BEJ432 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Ackah-Jnr et al_2022_Early_Childhood_Education_Policy_and_Pra.pdf
Creators: name: Ackah-Jnr, Francis R.
name: Appiah, John
name: Addo-Kissiedu, Kwaku
name: Kwao, Alex
Publisher: name: figshare
Year: 2023
Subjects: Early childhood education

description: Early childhood education (ECE) in Ghana has grown from a traditional approach to a more formalised and modernised system of care and education services for young children.As a valued practice, ECE reflects a distributive, regulatory or redistributive policy. The paper analyses Ghana’s ECE policy implementation using McDonnell and Elmore’s framework of five elemental instruments. We supported the analysis with ECE policy documents and research in ECE. Enabling and inhibiting policy instrument factors affecting ECE were identified and ways were devised to enhance the latter. We found that while ECE policy and practice has somewhat addressed equity and access issues, concerns exist regarding implementation factors such as quality teacher training and parent involvement for promoting effective programs. The paper recommends the need to evaluate ECE and provide planned and ongoing opportunities to advance the professional development, capacity, and motivation of ECE implementers, especially early childhood teachers.
On the trace approximations of products of Toeplitz matrices
Creators: name: Ginovyan, M. S.
name: Sahakyan, A. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The paper establishes error orders for integral limit approximations to the traces of products of Toeplitz matrices generated by integrable real symmetric functions defined on the unit circle. These approximations and the corresponding error bounds are of importance in the statistical analysis of discrete-time stationary processes: asymptotic distributions and large deviations of Toeplitz type random quadratic forms, estimation of the spectral parameters and functionals, etc.
Making Data Free, Immediate, and Having Equitable Access: How Federal and State Agencies Work to Meet OSTP Governance through Responsible Curation and Preservation
Creators: name: Fernandez, Rachel
Publisher: name: The 88th Annual Meeting of the Society for American Archaeology
Year: 2023
Subjects: subject: Multi-regional/comparative
valueUri: https://core.tdar.org/browse/geographic-keyword/83874/multi-regionalcomparative
subject: Digital Preservation
valueUri: https://core.tdar.org/browse/other-keyword/140815/digital-preservation
subject: Access
valueUri: https://core.tdar.org/browse/other-keyword/139461/access
subject: governance
valueUri: https://core.tdar.org/browse/other-keyword/142917/governance
subject: Cultural Heritage and Preservation
valueUri: https://core.tdar.org/browse/other-keyword/159851/cultural-heritage-and-preservation
subject: digital archaeology
valueUri: https://core.tdar.org/browse/other-keyword/141756/digital-archaeology
subject: digital curation
valueUri: https://core.tdar.org/browse/other-keyword/141964/digital-curation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: This is an abstract from the "SAA 2023: Individual Abstracts" session, at the 88th annual meeting of the Society for American Archaeology. With the call from the Office of Science and Technology Policy (OSTP) to make federally-funded research openly and immediately available, many archaeologists, archivists, and CRM professionals in the U.S. are left wondering how this affects their research and ability to preserve and protect their data. Most affected by this governance are state and federal agencies that are tasked with improving their current preservation and access policies by next year. Looking at three different agencies and their digital collections, this poster details varied workflows undertaken to make collections more accessible. Whether for public outreach or organizational purposes, depositing in a responsible repository such as tDAR (the Digital Archaeological Record), these agencies are able to fulfill this call for accessibility, protection of sensitive information, and preservation. Included in the poster is a summary of “best practices” for agencies to follow to ensure that this new directive is implemented and make their archaeological data available and responsibly curated.
Unconventional superconductivity in iron-base superconductors in a three-band model
Creators: name: Crivelli, Dawid
name: Ptok, Andrzej
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Iron-base superconductors exhibits features of systems where the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) phase, a superconducting state with non-zero total momentum of Cooper pairs, is actively sought. Experimental and theoretical evidence points strongly to the FFLO phase in these materials above the Pauli limit. In this article we discuss the ground state of iron-base superconductors near the critical magnetic field and the full $h-T$ phase diagram for pnictides in case of intra-band pairing, in a three-band model with $s_{\pm}$ symmetry.
description: RevTeX, 5 pages, 3 figures. Presented on "XVI National Conference of Superconductivity", October 7-12, 2013, Zakopane, Poland
Back-Scattering Properties of a Waveguide-Coupled Array of Atoms in the Strongly Non-Paraxial Regime
Creators: name: Reitz, D.
name: Sayrin, C.
name: Albrecht, B.
name: Mazets, I.
name: Mitsch, R.
name: Schneeweiss, P.
name: Rauschenbeutel, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally investigate the back-scattering properties of an array of atoms that is evanescently coupled to an optical nanofiber in the strongly non-paraxial regime. We observe that the power and the polarization of the back-scattered light depend on the nanofiber-guided excitation field in a way that significantly deviates from the predictions of a simple model based on two-level atoms and a scalar waveguide. Even though it has been widely used in previous experimental and theoretical studies of waveguide-coupled quantum emitters, this simple model is thus in general not adequate even for a qualitative description of such systems. We develop an ab initio model which includes the multi-level structure of the atoms and the full vectorial properties of the guided field and find very good agreement with our data.
Discovery of a Gas-Rich Companion to the Extremely Metal-Poor Galaxy DDO 68
Creators: name: Cannon, John M.
name: Johnson, Megan
name: McQuinn, Kristen B. W.
name: Alfvin, Erik D.
name: Bailin, Jeremy
name: Ford, H. Alyson
name: Girardi, Léo
name: Hirschauer, Alec S.
name: Janowiecki, Steven
name: Salzer, John J.
name: Van Sistine, Angela
name: Dolphin, Andrew
name: Elson, E. C.
name: Koribalski, Baerbel
name: Marigo, Paola
name: Rosenberg, Jessica L.
name: Rosenfield, Philip
name: Skillman, Evan D.
name: Venkatesan, Aparna
name: Warren, Steven R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present HI spectral-line imaging of the extremely metal-poor galaxy DDO 68. This system has a nebular oxygen abundance of only 3% Z$_{\odot}$, making it one of the most metal-deficient galaxies known in the local volume. Surprisingly, DDO 68 is a relatively massive and luminous galaxy for its metal content, making it a significant outlier in the mass-metallicity and luminosity-metallicity relationships. The origin of such a low oxygen abundance in DDO 68 presents a challenge for models of the chemical evolution of galaxies. One possible solution to this problem is the infall of pristine neutral gas, potentially initiated during a gravitational interaction. Using archival HI spectral-line imaging obtained with the Karl G. Jansky Very Large Array, we have discovered a previously unknown companion of DDO 68. This low-mass (M$_{\rm HI}$ $=$ 2.8$\times$10$^{7}$ M$_{\odot}$), recently star-forming (SFR$_{\rm FUV}$ $=$ 1.4$\times$10$^{-3}$ M$_{\odot}$ yr$^{-1}$, SFR$_{\rm Hα}$ $
description: Accepted for publication in the Astrophysical Journal Letters
Screening procedure for selection of putative ligands of SARS-CoV-2 proteins
Creators: name: Giordano, Deborah
name: Argenio, Maria Antonia
name: Scafuri, Bernardina
name: Carbone, Virginia
name: Marabotti, Anna
name: Facchiano, Angelo
Publisher: name: F1000 Research Limited
Year: 2020

description: Our team is working on the screening of putative ligands of SARS-CoV-2 proteins whose structure is available. Results of the screening highlighted a number of ligands with potential ability to bind the viral proteins, with a perspective interest in finding useful molecules against the pandemic urgency. In this poster we focus the attention on three compounds, currently used for the treatment of other pathologies, object of investigation during the first phase of the COVID-19 emergency, for their potential use against SARS-CoV-2.
Estimation of Absolute Magnitude-dependent Galactic Model Parameters In Intermediate Latitude With SDSS and SCUSS
Creators: name: Jia, Yunpeng
name: Du, Cuihua
name: Wu, Zhenyu
name: Peng, Xiyan
name: Ma, Jun
name: Zhou, Xu
name: Fan, Xiaohui
name: Fan, Zhou
name: Jing, Yipeng
name: Jiang, Zhaoji
name: Lesser, Michael
name: Nie, Jundan
name: Olszewski, Edward
name: Shen, Shiyin
name: Wang, Jiali
name: Zou, Hu
name: Zhang, Tianmeng
name: Zhou, Zhimin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Based on SDSS and South Galactic Cap of u-band Sky Survey (SCUSS) early data, we use star counts method to estimate the Galactic structure parameters in an intermediate latitude with 10,180 main-sequence (MS) stars in absolute magnitude interval of $4 \leq M_r \leq 13$. We divide the absolute magnitude into five intervals:$4 \leq M_r < 5$, $5 \leq M_r < 6$, $6 \leq M_r < 8$, $8 \leq M_r < 10$, $10 \leq M_r \leq 13$, and estimate the Galactic structure parameters in each absolute magnitude interval to explore their possible variation with the absolute magnitude. Our study shows the parameters depend on absolute magnitude. For the thin disk, the intrinsic faint MS stars have large local space density and they tend to stay close to the Galactic plane. A plausible explanation is that faint MS stars with long lifetime experience long gravitational interaction time result in a short scaleheight. However, for the thick disk, the parameters show a complex trend with absolute magnitude, which may imply the complicated original of the thick disk. For the halo, the intrinsic faint MS stars have large local density and small axial ratio, which indicate a flattened inner halo and a more spherical outer halo.
description: 10 pages, 5 figures, Accepted for publication in MNRAS
Additional file 1 of Risk factors for traumatic intracranial hemorrhage in mild traumatic brain injury patients at the emergency department: a systematic review and meta-analysis
Creators: name: Yang, Li Jin
name: Lassarén, Philipp
name: Londi, Filippo
name: Palazzo, Leonardo
name: Fletcher-Sandersjöö, Alexander
name: Ängeby, Kristian
name: Thelin, Eric Peter
name: Rubenson Wahlin, Rebecka
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1 1. Funnel plots and Egger’s tests. 2. Literature search strategy
Any realistic model of a physical system must be computationally realistic
Creators: name: Bolotin, Arkady
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is argued that any possible definition of a realistic physics theory -- i.e., a mathematical model representing the real world -- cannot be considered comprehensive unless it is supplemented with requirement of being computationally realistic. That is, the mathematical structure of a realistic model of a physical system must allow the collection of all the system's physical quantities to compute all possible measurement outcomes on some computational device not only in an unambiguous way but also in a reasonable amount of time. In the paper, it is shown that a deterministic quantum model of a microscopic system evolving in isolation should be regarded as realistic since the NP-hard problem of finding the exact solution to the Schrodinger equation for an arbitrary physical system can be surely solved in a reasonable amount of time in the case, in which the system has just a small number of degrees of freedom. In contrast to this, the deterministic quantum model of a truly macroscopic object ought to be considered as non-realistic since in a world of limited computational resources the intractable problem possessing that enormous amount of degrees of freedom would be the same as mere unsolvable.
description: 5 pages, replaces the earlier attempt arXiv:1401.1747 and answers some critiques of arXiv:1403.7686
Hadron spectra from overlap fermions on HISQ gauge configurations
Creators: name: Basak, S.
name: Datta, S.
name: Lytle, A. T.
name: Padmanath, M.
name: Majumdar, P.
name: Mathur, N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Adopting a mixed action approach, we report here results on hadron spectra containing one or more charm quarks. We use overlap valence quarks on a background of 2+1+1 flavor HISQ gauge configurations generated by the MILC collaboration. We also study the ratio of leptonic decay constants, f_Ds*/f_Ds. Results are obtained at two lattice spacings.
description: 7 pages, 4 figures; presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany
Anderson localization on the Falicov-Kimball model with Coulomb disorder
Creators: name: Carvalho, Rubens D. B.
name: Almeida, Guilherme M. A.
name: Souza, Andre M. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The role of Coulomb disorder is analysed in the Anderson-Falicov-Kimball model. Phase diagrams of correlated and disordered electron systems are calculated within dynamical mean-field theory applied to the Bethe lattice, in which metal-insulator transitions led by structural and Coulomb disorders and correlation can be identified. Metallic, Mott insulator, and Anderson insulator phases, as well as the crossover between them are studied in this perspective. We show that Coulomb disorder has a relevant role in the phase-transition behavior as the system is led towards the insulator regime.
Dielectric sensing by charging energy modulation in a nano-granular metal
Creators: name: Huth, Michael
name: Kolb, Florian
name: Plank, Harald
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Several sensing concepts using nanostructures prepared by focused electron beam induced deposition have been developed over the last years. Following work on highly miniaturized Hall sensors for magnetic sensing with soft magnetic Co, strain and force sensing based on nano-granular platinum-carbon structures (Pt(C)) was introduced. Very recently the capability of nano-granular Pt(C) structures to detect the presence of adsorbate water layers by conductance modulations was demonstrated. For magnetic and strain sensing the underlying physical mechanisms of the sensing effect have been analyzed in detail and are now quite well understood. This is not the case for the adsorbate layer induced conductance modulation effect. Here we provide a theoretical framework that allows for a semi-quantitative understanding of the observed water-sensing effect. We show how the near-interface renormalization of the Coulomb charging energy in the nano-granular metal caused by the dielectric screening of the polarizable adsorbate layer leads to a conductance modulation. The model can account for the conductance modulation observed in the water adsorbate experiments and can also be applied to understand similar effects caused by near-interface dielectric anomalies of ferroelectric thin films on top of nano-granular Pt(C). Our findings provide a pathway towards optimized nano-granular layer structures suitable for a wide range of dielectric or local potential sensing applications.