cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Exponential Efron-Stein Inequality for Lq Stable Learning Rules
Creators: name: Abou-Moustafa, Karim
name: Szepesvari, Csaba
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: There is accumulating evidence in the literature that stability of learning algorithms is a key characteristic that permits a learning algorithm to generalize. Despite various insightful results in this direction, there seems to be an overlooked dichotomy in the type of stability-based generalization bounds we have in the literature. On one hand, the literature seems to suggest that exponential generalization bounds for the estimated risk, which are optimal, can be only obtained through stringent, distribution independent and computationally intractable notions of stability such as uniform stability. On the other hand, it seems that weaker notions of stability such as hypothesis stability, although it is distribution dependent and more amenable to computation, can only yield polynomial generalization bounds for the estimated risk, which are suboptimal. In this paper, we address the gap between these two regimes of results. In particular, the main question we address here is \emph{whether it is possible to derive exponential generalization bounds for the estimated risk using a notion of stability that is computationally tractable and distribution dependent, but weaker than uniform stability. Using recent advances in concentration inequalities, and using a notion of stability that is weaker than uniform stability but distribution dependent and amenable to computation, we derive an exponential tail bound for the concentration of the estimated risk of a hypothesis returned by a general learning rule, where the estimated risk is expressed in terms of either the resubstitution estimate (empirical error), or the deleted (or, leave-one-out) estimate. As an illustration, we derive exponential tail bounds for ridge regression with unbounded responses, where we show how stability changes with the tail behavior of the response variables.
description: Additional text and appendices that were not included in the PMLR (ALT'19) proceedings are now included in this version
Multi-Structured Models for Transforming and Aligning Text
Creators: Thadani, Kapil
Publisher: name: Columbia University
Year: 2015
Subjects: Computer science

description: Structured representations are ubiquitous in natural language processing as both the product of text analysis tools and as a source of features for higher-level problems such as text generation. This dissertation explores the notion that different structured abstractions offer distinct but incomplete perspectives on the meaning encoded within a piece of text. We focus largely on monolingual text-to-text generation problems such as sentence compression and fusion, which present an opportunity to work toward general-purpose statistical models for text generation without strong assumptions on a domain or semantic representation. Systems that address these problems typically rely on a single structured representation of text to assemble a sentence; in contrast, we examine joint inference approaches which leverage the expressive power of heterogenous representations for these tasks.
      These ideas are introduced in the context of supervised sentence compression through a compact integer program to simultaneously recover ordered n-grams and dependency trees that specify an output sentence. Our inference approach avoids cyclic and disconnected structures through flow networks, generalizing over several established compression techniques and yielding significant performance gains on standard corpora. We then consider the tradeoff between optimal solutions, model flexibility and runtime efficiency by targeting the same objective with approximate inference techniques as well as polynomial-time variants which rely on mildly constrained interpretations of the compression task.
      While improving runtime is a matter of both theoretical and practical interest, the flexibility of our initial technique can be further exploited to examine the multi-structured hypothesis under new structured representations and tasks. We therefore investigate extensions to recover directed acyclic graphs which can represent various notions of predicate-argument structure and use this to experiment with frame-semantic formalisms in the context of sentence compression. In addition, we generalize the compression approach to accommodate multiple input sentences for the sentence fusion problem and construct a new dataset of natural sentence fusions which permits an examination of challenges in automated content selection. Finally, the notion of multi-structured inference is considered in a different context -- that of monolingual phrase-based alignment -- where we find additional support for a holistic approach to structured text representation.
The Fate of Binaries in the Galactic Center: The Mundane and the Exotic
Creators: name: Stephan, Alexander P.
name: Naoz, Smadar
name: Ghez, Andrea M.
name: Morris, Mark R.
name: Ciurlo, Anna
name: Do, Tuan
name: Breivik, Katelyn
name: Coughlin, Scott
name: Rodriguez, Carl L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Galactic Center (GC) is dominated by the gravity of a super-massive black hole (SMBH), Sagittarius A$^*$, and is suspected to contain a sizable population of binary stars. Such binaries form hierarchical triples with the SMBH, undergoing Eccentric Kozai-Lidov (EKL) evolution, which can lead to high eccentricity excitations for the binary companions' mutual orbit. This effect can lead to stellar collisions or Roche-lobe crossings, as well as orbital shrinking due to tidal dissipation. In this work we investigate the dynamical and stellar evolution of such binary systems, especially with regards to the binaries' post-main-sequence evolution. We find that the majority of binaries (~75%) is eventually separated into single stars, while the remaining binaries (~25%) undergo phases of common-envelope evolution and/or stellar mergers. These objects can produce a number of different exotic outcomes, including rejuvenated stars, G2-like infrared-excess objects, stripped giant stars, Type Ia supernovae (SNe), cataclysmic variables (CVs), symbiotic binaries (SBs), or compact object binaries. We estimate that, within a sphere of 250 Mpc radius, about 7.5 to 15 Type Ia SNe per year should occur in galactic nuclei due to this mechanism, potentially detectable by ZTF and ASAS-SN. Likewise we estimate that, within a sphere of 1 Gpc$^3$ volume, about 10 to 20 compact object binaries form per year that could become gravitational wave sources. Based on results of EKL-driven compact object binary mergers in galactic nuclei by Hoang at al. (2018), this compact object binary formation rate translates to about 15 to 30 events per year detectable by Advanced LIGO.
description: 8 pages, 3 figures, accepted by ApJ
Additional file 1: of Reducing barriers to trauma inquiry in substance use disorder treatment – a cluster-randomized controlled trial
Creators: name: Lotzin, Annett
name: Buth, Sven
name: Sehner, Susanne
name: Hiller, Philipp
name: Pawils, Silke
name: Metzner, Franka
name: Read, John
name: Härter, Martin
name: Schäfer, Ingo
Publisher: name: figshare
Year: 2019
Subjects: Biochemistry
Cell Biology
Pharmacology
Cancer

description: Sensitivity Analysis. (DOCX 81 kb)
West Chiltington church: structure and wall paintings
Creators: name: Potter, John F
name: Tudor-Craig, Pamela
name: Milner-Gulland, Robin
Publisher: name: Archaeology Data Service
Year: 2017

description: Sussex Archaeological Collections, 154, 169-193
description: The parish church of St Mary, West Chiltington (near Pulborough, West Sussex) is of considerable architectural interest: largely of the late Saxon and Norman periods, it has an added south aisle and chantry, with various notable features including an immensely long 'squint'. Restoration in the 1880s also revealed a remarkable array of wall paintings. Neither the fabric nor the paintings have been closely studied before now. The three authors of this article approach the building from various points of view: a detailed examination of the structure; an account of the phases of the painting; an evocation of the cultural climate in which they were produced. Additionally we provide the first publication of a comprehensive set of colour photographs of them. Previous commentators have assigned them to two periods (late 12th and 13th centuries); our investigation points to a much greater periodic range.
Some linear Jacobi structures on vector bundles
Creators: name: Iglesias, David
name: Marrero, Juan C.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D05; 53D10; 53D17

description: We study Jacobi structures on the dual bundle $A^\ast$ to a vector bundle $A$ such that the Jacobi bracket of linear functions is again linear and the Jacobi bracket of a linear function and the constant function 1 is a basic function. We prove that a Lie algebroid structure on $A$ and a 1-cocycle $ϕ\in Γ(A^\ast)$ induce a Jacobi structure on $A^\ast$ satisfying the above conditions. Moreover, we show that this correspondence is a bijection. Finally, we discuss some examples and applications.
description: 6 pages, To appear in C. R. Acad. Sci. Paris, S\'erie I
Additional file 1: of The role of patient organizations in the rare disease ecosystem in India: an interview based study
Creators: name: Mohua Choudhury
name: Saberwal, Gayatri
Publisher: name: figshare
Year: 2019
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Questionnaire used for the interviews. (DOCX 19 kb)
Barley Productivity Decomposition in Iran: Comparison of TT, GI, MGI, and GTTI Approaches
Creators: name: Shahbazi, Habib
name: Shahbazi, Habib
Publisher: name: Unknown
Year: 2017
Subjects: subject: Crop Production/Industries
subject: Productivity Analysis
subject: Barley
subject: productivity
subject: Modified General Index
subject: Generalized Modified General Index
subject: General Time Trend index

description: In this paper, the authors present new indices for estimating technical change, return to scale, and TFP growth, as well as its decomposition. These indices, Modified General Index (MGI), Generalized Modified General Index (GMGI), and General Time Trend index (GTTI), are generalization of General Index approaches. These approaches were used for productivity decomposition of Iran's barely production across the period 2000-2012 in 20 provinces. To select the best approaches, estimated TFP growth of TT, GI, MGI and GTTI are compared with Divisia Index. Results show that differences between barley TFP growth of TT, GI, MGI, and GTTI approaches with Divisia Index are 39.12, 17.94, 9.71, and 1.61 percent, respectively. The findings revealed that MGI method is appropriate when time series data or panel data with limited cross-section data are used. In addition, when only need to compare periods of time that are not regular (for evaluation plan or policies), it is suggested GMGI method. When time series data or panel data with limited cross section data are used, and there is a trend in every period, the GTTI method is recommended for estimating technical change, return to scale, and TFP growth.
Small and Medium-sized Business Growth in Agricultural Sector (Case Study: Guilan Province)
Creators: name: Esfaghansary, Majid Ghanbarinejad
name: Sajadi, Seyed Mojtaba
name: Badizadeh, Ali
name: Esfaghansary, Majid Ghanbarinejad
name: Sajadi, Seyed Mojtaba
name: Badizadeh, Ali
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: agricultural sector
subject: Entrepreneurship
subject: SME

description: Agriculture is one of the pillars of economics whose development requires a particular attention to all production factors. This paper aims to provide a systematic and conceptual model that is based on a conceptualization of the field. For this purpose, the theory and methodology were extracted on the basis of data derived from field observations and interviews drawn from a systematic conceptual model of key informants. The current model shows that original category of the agriculture business, i.e. business growth, is originated from causal conditions including personal features, supportive roles, and production factors and, based on evaluation strategies and the exploitation of opportunities, leads to a new value based on business growth as a result of the process. Underlying conditions, such as individual factors, and geographical conditions, as well as environmental conditions, including the government, the legislature, and banks, are effective in this process. Understanding the aspects of business growth is effective in developing policies to support and promote entrepreneurship. Moreover, it is essential to design a growth model to help business owners select a definition for firm growth. It is noteworthy that so far, the majority of the proposed models have been ineffective in some aspects and more attention should be paid to future growth modeling in the research context.
Machine Learning the Voltage of Electrode Materials in Metal-ion Batteries
Creators: name: Joshi, Rajendra P.
name: Eickholt, Jesse
name: Li, Liling
name: Fornari, Marco
name: Barone, Veronica
name: Peralta, Juan E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Machine learning (ML) techniques have rapidly found applications in many domains of materials chemistry and physics where large data sets are available. Aiming to accelerate the discovery of materials for battery applications, in this work, we develop a tool (http://se.cmich.edu/batteries) based on ML models to predict voltages of electrode materials for metal-ion batteries. To this end, we use deep neural network, support vector machine, and kernel ridge regression as ML algorithms in combination with data taken from the Materials Project Database, as well as feature vectors from properties of chemical compounds and elemental properties of their constituents. We show that our ML models have predictive capabilities for different reference test sets and, as an example, we utilize them to generate a voltage profile diagram and compare it to density functional theory calculations. In addition, using our models, we propose nearly 5,000 candidate electrode materials for Na- and K-ion batteries. We also make available a web-accessible tool that, within a minute, can be used to estimate the voltage of any bulk electrode material for a number of metal-ions. These results show that ML is a promising alternative for computationally demanding calculations as a first screening tool of novel materials for battery applications.
description: 28 pages
Additional file 1 of What can urban mobility data reveal about the spatial distribution of infection in a single city?
Creators: name: Moss, Robert
name: Naghizade, Elham
name: Tomko, Martin
name: Geard, Nicholas
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Plant Biology
subject: Computational Biology

description: Technical appendix. Details of the model equations, mixing matrix construction, and parameter values. (PDF 111 kb)
Strategy for wildlife ecological risk assessment at Teck Cominco’s Kimberley operations, BC
Creators: name: Allard, P. J.
name: Mann, Gary S. (Gary Seymour), 1966-
name: Baker, Randy F.
name: Higgins, C. A.
name: Dawson, Bruce B.
Publisher: name: The University of British Columbia
Year: 2009

description: The overall objective of this predictive wildlife ecological risk assessment (ERA) is to assess contaminant-related risks after implementation of Teck Cominco's closure plan for its Kimberley Operations. The first stage of the wildlife ERA, problem formulation (PF), was conducted to identify the most likely sources of potential risks for the site to help focus subsequent ERA investigations. This paper summarizes key findings of the PF and presents an overview of the main components of the wildlife ERA. A separate paper (Mann et al., 2004) addresses potential risks to the aquatic environment.
Additional file 1 of Identifying lncRNA-mediated regulatory modules via ChIA-PET network analysis
Creators: name: Thiel, Denise
name: NataĹĄa Djurdjevac Conrad
name: Ntini, Evgenia
name: Peschutter, Ria
name: Siebert, Heike
name: Marsico, Annalisa
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology
subject: Plant Biology

description: This pdf includes supplementary tables and figures referred to in the main text. This includes four additional figures, included one showing several small connected components pointing to lncRNA whose regulated genes are known from literature, as well as tables with network properties of lncRNAs in the biggest connected components of chromosomes 1, 11 and 17. (PDF 421 kb)
Consequences of Tillage Technology: The Sustainability Perspective (Case of Fars Province, Iran)
Creators: name: Samiee, Sedigheh
name: Rezaei-Moghaddam, Kurosh
name: Samiee, Sedigheh
name: Rezaei-Moghaddam, Kurosh
Publisher: name: Unknown
Year: 2018
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: consequences, Iran, no-till
subject: (NL) technology, sustainability

description: Activities to reduce soil erosion and to improve soil fertility, agricultural production and finally, crop income have been considered to be fundamental for the implementation of sustainable agriculture in Iran. This research investigates the effects of no-till (NL) technology on reducing soil erosion and increasing agricultural income and eventually achieving sustainability. Data were collected with a questionnaire. The research sample including 165 NL adopter farmers was selected using multi-stage stratified random sampling method in Fars Province, Iran. The findings revealed that this technology improves performance and reduces water, energy and input consumption. The findings contribute to understanding the effects of no-till technology on agricultural systems. Also, information is provided to help the necessary planning for more effective implementation of no-till technology. According to the results of regression, wheat yields, increased use of pesticides, awareness of the benefits, and satisfaction with NL technology are the factors underpinning farmers` willingness to keep using NL technology.
A description of the quantum superalgebra $U_q[sl(n+1|m)]$ via creation and annihilation generators
Creators: name: Palev, T. D.
name: Stoilova, N. I.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Algebra (math.QA)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A description of the quantum superalgebra $U_q[sl(n+1|m)]$ and in particular of the special linear superalgebra $sl(n+1|m)$ via creation and annihilation generators (CAGs) is given. It provides an alternative to the canonical description of $U_q[sl(n+1|m)]$ in terms of Chevalley generators. A conjecture that the Fock representations of the CAGs provide microscopic realizations of exclusion statistics is formulated.
description: 16 pages, TeX; an extended version of a paper to appear in J. Phys. A; a multiple in the RHS of Eq. (38d) was added
Promoting Organizational Innovation among Agricultural Extension Experts: The Role for Knowledge Management
Creators: name: Kaabi, Abdolvahed
name: Roosta, Kuroush
name: Kaabi, Abdolvahed
name: Roosta, Kuroush
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Teaching/Communication/Extension/Profession
subject: knowledge management
subject: organizational innovation
subject: agricultural extension
subject: Khuzestan Province

description: Recently, innovation has become a very important issue, as it provides a strategic advantage for organizations to outperform competition and remain agile in the environment. Additionally, knowledge management is considered to be a strong support for innovation. However, few studies examine the role of human resource management in fostering knowledge capability which leads more innovation in the organizations. The purpose of this study was to examine the role of knowledge management components in organizational innovation among agricultural extension experts in Khuzestan Province. The statistical population of this study consisted of all agricultural extension experts in Khuzestan Province (N=328). Using Bartlett’s et al. (2001) sampling table, 130 of them were selected as a sample using the proportionate stratified random sampling method (n=130). The instrument of gathering data was a questionnaire that validity was confirmed by the panel of experts and its reliability was established by Cronbach's Alpha coefficient (α>0.70). The results of multiple regression analysis revealed that knowledge management components (knowledge creation, knowledge acquisition, knowledge storage and knowledge sharing and application) had positive significant effect on organizational innovation among agricultural extension experts in Khuzestan Province. The results emphasize the importance of knowledge management components to the success of innovation process in agricultural extension system.
Gravitational Lensing by Cosmic String Loops
Creators: name: de Laix, Andrew A
name: Vachaspati, Tanmay
Publisher: name: arXiv
Year: 1996
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the deflection of a light ray caused by the gravitational field of a cosmic string loop in the weak field limit and reduce the problem to a single quadrature over a time slice of the loop's world sheet. We then apply this formalism to the problem of gravitational lensing by cosmic string loops. In particular, we find an analytic solution for the special case of a circular loop perpendicular to the optical axis. As examples of more complicated loops, we consider two loops with higher frequency Fourier modes. The numerical analysis illustrates the general features of loop lenses. Our estimates, using typical parameters for GUT scale loops, show that the stringy nature of loop lenses can be observed for lensing systems involving high redshift galaxies ($z \sim 2$), and we suggest that gravitational lensing can confirm the existence of GUT scale strings if they are the seeds for large scale structure formation.
description: 17 pages, RevTex with 1 pict and 9 postscript figures. Postscript figures are 100dpi bitmaps (full resolution figures are available at http://cwsing.phys.cwru.edu/preprints/ )
Additional file 1 of Blood flow response to orthostatic challenge identifies signatures of the failure of static cerebral autoregulation in patients with cerebrovascular disease
Creators: name: Gregori-Pla, Clara
name: Mesquita, Rickson C.
name: Favilla, Christopher G.
name: Busch, David R.
name: Blanco, Igor
name: Zirak, Peyman
name: Frisk, Lisa Kobayashi
name: Avtzi, Stella
name: Maruccia, Federica
name: Giacalone, Giacomo
name: Cotta, Gianluca
name: Camps-Renom, Pol
name: Mullen, Michael T.
name: Martí-Fàbregas, Joan
name: Prats-Sánchez, Luís
name: Martínez-Domeño, Alejandro
name: Kasner, Scott E.
name: Greenberg, Joel H.
name: Zhou, Chao
name: Edlow, Brian L.
name: Putt, Mary E.
name: Detre, John A.
name: Yodh, Arjun G.
name: Durduran, Turgut
name: Delgado-Mederos, Raquel
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Marine Biology
subject: Mental Health
subject: Hematology

description: Additional file 1.
ON-OFF GRID BASED OPTIMAL POWER TRANSMISSION WITH INTEGRATED HYBRID RENEWABLE ENERGY STORAGE SYSTEMS
Creators: name: SRINIVASA ACHARYA
Publisher: name: Zenodo
Year: 2024

description: Power generation is the harbinger of economic growth and industrial development of any country. A Microgrid consists of clusters of loads and distributed generators that operate as a single controllable system. The interconnection of the Distributed Generation to the utility grid through power electronic interface has raised concern about safe operation and protection of equipments. Concept of Microgrid supersedes all the advantages of single source DG and Hybrid DG. Many innovative techniques have been used for enhancing the performance and feasibility of microgrid in isolated or islanded mode and grid connected mode. Different types of energy storage systems includes battery energy storage, pumped hydro storage, flywheel energy storage and supercapacitors. A hybrid power system (HPS) consists of different types of micro sources along with converters and energy storage systems. The hybrid systems are connected in two different modes: (i) Islanded Mode and (ii) Grid Connected Mode.
Antipathy to ambivalence: Politics and women police in Sussex, 1915-45
Creators: name: Oakensen, Derek
Publisher: name: Archaeology Data Service
Year: 2017

description: Sussex Archaeological Collections, 153, 171-189
description: The genesis of women's entry into policing can be found in social changes generated by the First World War and by the pre-war women's suffrage movement. But acceptance and integration were entirely different matters. Quite apart from any fear of proponents' political motivation, the idea that women should be allowed to patrol the streets represented a fundamental challenge to long-standing orthodoxies. Real decision-making power lay, in any case, with antipathetic police authorities and chief constables of the six forces in the county rather than with central government; and lobbying, however well-organised, could take years to precipitate change. What emerged were six distinct approaches which changed with time over the following 30 years. But, in most of Sussex, decision-makers remained ambivalent: the notion that women could be constables and a permanent feature of policing structures was not to be finally settled until well after 1945.
Reduction factors for the icosahedral T_1u x h_g Jahn-Teller system
Creators: name: Qiu, Q. C.
name: Dunn, J. L.
name: Bates, C. A.
name: Abou-Ghantous, M.
name: Polinger, V. Z.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Reduction factors (RF), that are needed when modeling vibronic systems by an effective Hamiltonian in an electronic basis, are calculated for the T_1u x h_g Jahn-Teller (JT) system. The results obtained will be useful when modeling the fullerene anion C_60-, which is believed to exhibit a T_1u x h_g JT effect in its ground state. First-order RF's are calculated using symmetry-adapted vibronic ground and tunneling states in which the system is allowed to tunnel between equivalent minima in the potential energy surface. The effect of anisotropy in the minima is also considered. Second-order RF's are calculated incorporating coupling to excited harmonic-oscillator states associated with the minima.
description: Published as PRB 2000
Classical model for diffusion and thermalization of heavy quarks in a hot medium: memory and out-of-equilibrium effects
Creators: name: Ruggieri, Marco
name: Frasca, Marco
name: Das, Santosh Kumar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We consider a simple model for the diffusion of heavy quarks in a hot bath, modeling the latter by an ensemble of oscillators distributed accorded to either a thermal distribution or to an out-of-equilibrium distribution with a saturation scale. Within this model it is easy to introduce memory effects by changing the distribution of oscillators: we model these by introducing a gaussian distribution, $dN/dω$, which can be deformed continuously from a $δ-$function giving a Markov dissipation to a broad kernel with memory. Deriving the equation of motion of the heavy quark in the bath we remark how dissipation comes out naturally as an effect of the back-reaction on the bath of oscillators. Moreover, the exact solution of this equation allows for the definition of a thermalization time as the time necessary to remove any memory of the initial condition. We find that the broadening the dissipative kernel while keeping the coupling fixed lowers the thermalization time. We also derive the fluctuation-dissipation theorem for the bath, and use this to estimate the kinematic regime in which momentum diffusion of the heavy quark dominates over drift: we find that diffusion is more important as long as $K_0/{\cal E}$ is small, where $K_0$ and ${\cal E}$ denote the initial energy of the heavy quark and the average energy of the bath respectively.
Transcutaneous auricular vagus nerve stimulation may benefit from the addition of N-acetylcysteine to facilitate motor learning in infants of diabetic mothers failing oral feeds
Creators: name: Brennan, Alyssa
name: George, Mark S.
name: Bonham, Kate
name: Hunt, Sally
name: Badran, Bashar W.
name: Jenkins, Dorothea D.
name: Garner, Sandra S.
name: Wiest, Donald B.
name: Morris, Jessica
name: Moss, Hunter
name: Adams, Lauren
Publisher: name: Frontiers
Year: 2024

description: Objective: This study aims to determine if pretreating with enteral N-acetylcysteine (NAC) improves CNS oxidative stress and facilitates improvement in oromotor skills during transcutaneous auricular nerve stimulation (taVNS) paired with oral feedings in infants of diabetic mothers (IDMs) who are failing oral feeds.
Methods: We treated 10 IDMs who were gastrostomy tube candidates in an open-label trial of NAC and taVNS paired with oral feeding. NAC (75 or 100 mg/kg/dose) was given by nasogastric (NG) administration every 6 h for 4 days, then combined with taVNS paired with 2 daily feeds for another 14 days. NAC pharmacokinetic (PK) parameters were determined from plasma concentrations at baseline and at steady state on day 4 of treatment in conjunction with magnetic resonance spectroscopic (MRS) quantification of CNS glutathione (GSH) as a marker of oxidative stress. We compared increases in oral feeding volumes before and during taVNS treatment and with a prior cohort of 12 IDMs who largely failed to achieve full oral feeds with taVNS alone.
Results: NAC 100 mg/kg/dose every 6 h NG resulted in plasma [NAC] that increased [GSH] in the basal ganglia with a mean of 0.13 ± 0.08 mM (p = 0.01, compared to baseline). Mean daily feeding volumes increased over 14 days of NAC + taVNS compared to the 14 days before treatment and compared to the prior cohort of 12 IDMs treated with taVNS alone. Seven IDMs reached full oral feeds sufficient for discharge, while three continued to have inadequate intake.
Conclusion: In IDM failing oral feeds, NAC 100 mg/kg/dose every 6 h NG for 4 days before and during taVNS paired with oral feeding increased CNS GSH, potentially mitigating oxidative stress, and was associated with improving functional feeding outcomes compared to taVNS alone in a prior cohort. This represents a novel approach to neuromodulation and supports the concept that mitigation of ongoing oxidative stress may increase response to taVNS paired with a motor task.
Effect of in-medium mass-shift on transverse-momentum spectrum and elliptic anisotropy of $ϕ$ meson
Creators: name: Zhang, Yong
name: Yang, Jing
name: Wu, Weihua
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the effect of in-medium mass-shift on transverse-momentum spectrum and elliptic anisotropy of $ϕ$ meson. It is found that the mass-shift enhances the $ϕ$ yields and suppresses the elliptic flow $v_2$ in large momentum region, and the effects increase with the increasing mass-shift. The effects are various for different sources and decrease with the increasing expanding velocity. We further study the effects for parts of all $ϕ$ meson with mass-shift, and the effects decrease with the decreasing probability of $ϕ$ meson with mass-shift. Since the different mass-shift lead to different transverse-momentum spectrum and $v_2$, our study may provide a way to restrict the ranges of in-medium mass-shift of $ϕ$ meson in high-energy heavy-ion collisions.
Automatic detection of Interplanetary Coronal Mass Ejections from in-situ data: a deep learning approach
Creators: name: Nguyen, Gautier
name: Aunai, Nicolas
name: Fontaine, Dominique
name: Pennec, Erwan Le
name: Bossche, Joris Van den
name: Jeandet, Alexis
name: Bakkali, Brice
name: Vignoli, Louis
name: Blancard, Bruno Regaldo-Saint
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Decades of studies have suggested several criteria to detect Interplanetary coronal mass ejections (ICME) in time series from in-situ spacecraft measurements. Among them the most common are an enhanced and smoothly rotating magnetic field, a low proton temperature and a low plasma beta. However, these features are not all observed for each ICME due to their strong variability. Visual detection is time-consuming and biased by the observer interpretation leading to non exhaustive, subjective and thus hardly reproducible catalogs. Using convolutional neural networks on sliding windows and peak detection, we provide a fast, automatic and multi-scale detection of ICMEs. The method has been tested on the in-situ data from WIND between 1997 and 2015 and on the 657 ICMEs that were recorded during this period. The method offers an unambiguous visual proxy of ICMEs that gives an interpretation of the data similar to what an expert observer would give. We found at a maximum 197 of the 232 ICMEs of the 2010-2015 period (recall 84 +-4.5 % including 90% of the ICMEs present in the lists of Nieves-Chinchilla et al. (2015) and Chi et al. (2016). The minimal number of False Positives was 25 out of 158 predicted ICMEs (precision 84+-2.6%). Although less accurate, the method also works with one or several missing input parameters. The method has the advantage of improving its performance by just increasing the amount of input data. The generality of the method paves the way for automatic detection of many different event signatures in spacecraft in-situ measurements.
Tensor Products of Principal Unitary Representations of Quantum Lorentz Group and Askey-Wilson Polynomials
Creators: name: Buffenoir, E.
name: Roche, Ph.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Quantum Algebra (math.QA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the tensor product of principal unitary representations of the quantum Lorentz group, prove a decomposition theorem and compute the associated intertwiners. We show that these intertwiners can be expressed in terms of complex continuations of 6j symbols of U_q(su(2)). These intertwiners are expressed in terms of q-Racah polynomials and Askey-Wilson polynomials. The orthogonality of these intertwiners imply some relation mixing these two families of polynomials. The simplest of these relations is the orthogonality of Askey-Wilson polynomials.
description: 34 pages LaTex file, no figures
Elwendia capusii Pimenov & Kljuykov
Creators: name: Kljuykov, Eugene V.
name: Lazkov, Georgii A.
name: Degtjareva, Galina V.
name: Zakharova, Ekaterina A.
name: Ukrainskaja, Uljana A.
name: Lyskov, Dmitry F.
name: Samigullin, Tahir H.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Apiales
Apiaceae
Elwendia
Elwendia capusii

description: Elwendia capusii is new to Afghanistan
 Elwendia capusii is a species widely distributed in Mountain Middle Asia, Tian-Shan and Pamir-Alay. In South Tajikistan, it occurs up to the Afghan border but has not been reported from Afghanistan (Rechinger 1987). Based on herbarium specimens examined at E, K, MW, M and LE, we confirm the presence of the species in North Afghanistan. Elwendia capusii is morphologically distinctive among the other species due to the presence of long (over a half of the mericarp length) and erect (vs. recurved) styles. Our phylogenetic tree highlights that the E. capusii clade is well delineated and supported, but also a genetic differentiation among its populations has occurred. In the absence of any good distinguishing morphological characters, the observed variation in ITS/ETS sequences between the samples from Afghanistan and from the remaining area can be considered as infraspecific.
 Specimens examined:— Afghanistan, Mashad to Faizabad Badakhshan (Kochka valley), 3500 ft., limestone slopes. 19 May 1964, F.Furse 6147 (K!, LE!). Afghanistan, prov. Balkh: Ali Koh, 5 km SO Sultan Baba (18 km S Mazar-i-Sharif), 1200 m, Kalkfelsen. 67/09-36/34. 11 April 1978, Podlech 31015 (M!); prov. Balkh, Mazar-i-Scharif, 29 May 1969, Hedge, Wendelbo & Ekberg 8485A (E!, MW!).
 Distribution area:— Kazakhstan, Kyrgyzstan, Uzbekistan, Turkmenistan, Tajikistan, N Afghanistan.
description: Published as part of Kljuykov, Eugene V., Lazkov, Georgii A., Degtjareva, Galina V., Zakharova, Ekaterina A., Ukrainskaja, Uljana A., Lyskov, Dmitry F. & Samigullin, Tahir H., 2022, Taxonomic revision of critical taxa of Elwendia (Umbelliferae-Apioideae) from Tajikistan and neighbouring countries, with descriptions of three new species from the Pamir-Alay and distributional novelties, pp. 255-273 in Phytotaxa 543 (5) on page 268, DOI: 10.11646/phytotaxa.543.5.1, http://zenodo.org/record/6479422
Multi-scalar Deliberative Transportation Planning: How London and Paris Made Way for Buses
Creators: Ray, Rosalie Singerman
Publisher: name: Columbia University
Year: 2020
Subjects: City planning
Urban transportation--Planning
Buses
Local government--Planning

description: This dissertation asks how activists, planners, and politicians reshaped transport institutions to prioritize buses over cars in London and Paris. The policy studied in both cities is the creation of a network of bus priority, known as the Red Routes and London Bus Priority Network in London and the Mobilien network in Paris. Using media analysis, archival research, and 30 interviews across the two cities, it traces the process of change in both cities and maps the deliberative system, the actors engaged in the decision-making process. It finds that empowered but not autonomous local governments—the boroughs in the case of London and the city of Paris in the case of Paris—were major actors in the change process, putting forth alternatives and deliberating with regional bodies to shape policies that took into account a variety of competing needs. It also finds that public conversation, debate, and conflict were essential to the process of institutional change, through which road governance was decentralized and local actors were empowered to control their own streets. These findings follow Iris Marion Young’s proposal that empowered but not autonomous local actors, subject to regional governments, is the most just model of urban governance.
MOESM1 of Time-of-day at symptom onset was not associated with infarct size and long-term prognosis in patients with ST-segment elevation myocardial infarction
Creators: name: Sager, Hendrik
name: Husser, Oliver
name: Steffens, Sabine
name: Karl-Ludwig Laugwitz
name: Schunkert, Heribert
name: Kastrati, Adnan
name: Ndrepepa, Gjin
name: Kessler, Thorsten
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy
subject: Computational Biology

description: Additional file 1: Table S1. Univariate correlates of 5-year all-cause mortality. Table S2. Univariate correlates of 5-year cardiovascular mortality. Table S3. Association of time-of-day at symptom onset with area at risk, final infarct size or salvage index in individuals presenting within three hours after symptom onset. Table S4. Association of time-of-day at symptom onset with long-term clinical outcome (results obtained from the univariable Cox proportional hazards model) in individuals presenting within three hours after symptom-onset. Figure S1. Total blood leukocyte counts on admission in relation to time-of-day at symptom onset.
ff19SB - Amino acid specific protein backbone parameters trained against quantum mechanics energies in solution
Creators: name: Tian, Chuan
Publisher: name: Zenodo
Year: 2019
Subjects: ff19SB
AMBER
Force fields
QM
Solution
Protein backbone
CMAP
OFFwebinar

description: Chuan Tian presented his work on Amber ff19SB force field at the Chodera lab at MSKCC on Sep 12, 2019. The uploaded material contains presentation slides and video. Abstract: Molecular dynamics (MD) simulations have become increasingly popular in studying the motions and functions of biomolecules. The accuracy of the simulation, however, is highly determined by the classical force field (FF), a set of functions with adjustable parameters to compute the potential energy from atomic positions. The relatively simple terms in most of the current force fields are computationally advantageous which enable the simulation of biologically important macromolecules at biologically relevant timescale. However, the overall quality of the FF, including our previously published ff14SB, is limited by the assumptions that were made years ago. (1) An overly symmetric φ/ψ dihedral energy map arises from the uncoupled cosine functions used to model these two degrees of freedom in the protein backbone. (2) The model does not show sufficient dependence of the backbone energetics on the amino acids, probably because the parameters developed for the simple amino acid Ala were applied to all other amino acids without checking the quality of the transferability. (3) The fixed partial charges were trained for aqueous solution, but the dihedral parameters were all fit to gas-phase QM, thus the resulting dihedral parameters actually counteract the intended polarization effect and introduce significant internal inconsistency in the model. In our new force field ff19SB, we have significantly improved the backbone profiles for all 20 amino acids. We have developed an amino-acid specific CMAP term by fitting against in-solution QM data. Our results show that the new FF not only better reproduces various types of experimental data on amino-acid specific properties such as NMR scalar coupling and helical propensity, but it also improves secondary structure content in small peptides and maintains reasonably accurate protein NMR order parameters.
The Excavation of Two Bronze Age Barrows at Friday's Church, Barpham Hill
Creators: name: Barr-Hamilton, A
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 118, 171-182
description: Two Bronze Age barrows, of dissimilar type, were totally excavated. Barrow No. 1, the smaller of the two, had an incomplete ring ditch. There was a central inhumation which had suffered considerable recent disturbance, and an unurned secondary cremation. There was also evidence, in the form of Romano-British pottery and coins, for shallow burials in the barrow during the Roman period. Excavation of barrow No. 2 revealed four cremations, one unurned beneath a small cairn of flints, another in a small bipartite vessel, and two in Collared Urns, one upright, the other inverted. There was no ditch around this barrow.
Rural Reading List
Creators: name: Rural Library Committee, United States Department Of Agriculture In Cooperation With The United States Department Of Agriculture Library
name: Rural Library Committee, United States Department Of Agriculture In Cooperation With The United States Department Of Agriculture Library
Publisher: name: Unknown
Year: 1947
Subjects: Teaching/Communication/Extension/Profession

description: Subjects under Agricultural Economics include: General, Farm Management, Land Tenure, Agricultural Finance, Marketing and Consumption, Cooperation, National Policies and Programs, Foreign Trade, Land Utilization and Policy, and Prices
Constitutive law of nonlocal gravity
Creators: name: Puetzfeld, Dirk
name: Obukhov, Yuri N.
name: Hehl, Friedrich W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyze the structure of a recent nonlocal generalization of Einstein's theory of gravitation by Mashhoon et al. By means of a covariant technique, we derive an expanded version of the nonlocality tensor which constitutes the theory. At the lowest orders of approximation, this leads to a simplification which sheds light on the fundamental structure of the theory and may prove useful in the search for exact solutions of nonlocal gravity.
description: 7 pages
Correlations in Chaotic Eigenfunctions at Large Separation
Creators: name: Hortikar, Sanjay
name: Srednicki, Mark
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: An energy eigenfunction in a classically chaotic system is known to have spatial correlations which (in the limit of small $\hbar$) are governed by a microcanonical distribution in the classical phase space. This result is valid, however, only over coordinate distances which are small compared to any relevant classical distance scales (such as the cyclotron radius for a charged particle in a magnetic field). We derive a modified formula for the correlation function in the regime of large separation. This then permits a complete description, over all length scales, of the statistical properties of chaotic eigenfunctions in the $\hbar\to 0$ limit. Applications to quantum dots are briefly discussed.
description: 8 pages, 1 figure, RevTeX, epsf