cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Feynman graphs and related Hopf algebras
Creators: name: Duchamp, Gérard Henry Edmond
name: Blasiak, Pawel
name: Horzela, Andrzej
name: Penson, Karol A.
name: Solomon, Allan I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Symbolic Computation (cs.SC)
subject: Discrete Mathematics (cs.DM)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: G.2.1

description: In a recent series of communications we have shown that the reordering problem of bosons leads to certain combinatorial structures. These structures may be associated with a certain graphical description. In this paper, we show that there is a Hopf Algebra structure associated with this problem which is, in a certain sense, unique.
Small Area with Multiply Imputed Survey Data
Creators: name: Runge, Marina
name: Schmid, Timo
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Fay-Herriot model
subject: mean squared error
subject: multiple imputation
subject: nonresponse
subject: survey statistics
subject: 300 Sozialwissenschaften::330 Wirtschaft::330 Wirtschaft

description: In this article, we propose a framework for small area estimation with multiply imputed survey data. Many statistical surveys suffer from (a) high nonresponse rates due to sensitive questions and response burden and (b) too small sample sizes to allow for reliable estimates on (unplanned) disaggregated levels due to budget constraints. One way to deal with missing values is to replace them by several plausible/imputed values based on a model. Small area estimation, such as the model by Fay and Herriot, is applied to estimate regionally disaggregated indicators when direct estimates are imprecise. The framework presented tackles simultaneously multiply imputed values and imprecise direct estimates. In particular, we extend the general class of transformed Fay-Herriot models to account for the additional uncertainty from multiple imputation. We derive three special cases of the Fay-Herriot model with particular transformations and provide point and mean squared error estimators. Depending on the case, the mean squared error is estimated by analytic solutions or resampling methods. Comprehensive simulations in a controlled environment show that the proposed methodology leads to reliable and precise results in terms of bias and mean squared error. The methodology is illustrated by a real data example using European wealth data.
ANALYSIS OF THE IMPACT ON UK SUGAR PRODUCTION EFFICIENCY OF REFORMING THE EU SUGAR REGIME
Creators: name: Renwick, Alan W.
name: Revoredo-Giha, Cesar
name: Renwick, Alan W.
name: Revoredo-Giha, Cesar
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Industrial Organization
subject: Productivity Analysis
subject: EU sugar reform
subject: UK agriculture
subject: UK sugar beet production
subject: Multioutput cost function.

description: The purpose of the paper is examining the potential implications for the UK sugar beet sector of the EU sugar regime reform. Although the reform has yet to be formalised, the initial proposals centre on price and quota cuts. Using panel data from the Farm Business Survey for England, the paper estimates two cost functions: one for the sugar enterprise and another for the cropping part of the farm (i.e., excludes any livestock enterprise) and use them to analyse the impacts on profitability and costs of three possible reform scenarios: a 25 per cent cut in UK quota, a 25 per cent cut in price, a 40 per cent cut in price. The results show that the largest gains in terms of economic efficiency would be achieved under the 40 per cent price cut; however, the models suggest that this would also lead to the greatest reduction in production if the fixed costs of producing sugar were not adjusted.
P. Paboudjian; A. Alpago-Novello, Ererouk
Creators: name: Wessel, Klaus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 62 (1978): Oriens christianus, Band 62
Conserving Approximations in Time-Dependent Density Functional Theory
Creators: name: von Barth, Ulf
name: Dahlen, Nils Erik
name: van Leeuwen, Robert
name: Stefanucci, Gianluca
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the present work we propose a theory for obtaining successively better approximations to the linear response functions of time-dependent density or current-density functional theory. The new technique is based on the variational approach to many-body perturbation theory (MBPT) as developed during the sixties and later expanded by us in the mid nineties. Due to this feature the resulting response functions obey a large number of conservation laws such as particle and momentum conservation and sum rules. The quality of the obtained results is governed by the physical processes built in through MBPT but also by the choice of variational expressions. We here present several conserving response functions of different sophistication to be used in the calculation of the optical response of solids and nano-scale systems.
description: 11 pages, 4 figures, revised version
Teachers’ written comments and their effects on students’ revisions
Creators: name: Wilson, Jennifer Ruth
Publisher: name: University of British Columbia
Year: 2009

description: This study examines effects of teachers' written comments on students' writing, specifically the number of revisions students make in response to teachers' comments. The two teachers involved in this study were colleagues and had completed a study together previously. Analysis of teachers' comments (whether content-based or convention-based) and differences between high-, medium- and low-level writers' (ability rating based on teachers' assessment of written work) revisions are included. Teachers' written comments on students' (n=52) narrative writing (n= 139) from two grade-seven classes were categorized and coded, as were students' revisions made in response to their teacher's comments. Results of descriptive and correlational analyses show there are certain written comments that teachers make on students' writing that elicit a greater number of revisions from students than others. Although the teachers had worked together previously presenting workshops on writing instruction and had discussed commenting practices at length, differences between commenting styles became evident. Teacher 1 's comments were largely content-based, with the greatest percentage of student revisions relating to content-based questions, and for Teacher 2, whose comments were mainly convention-based, convention-based statements resulted in the greatest percentage of student revisions. Findings also reveal that the number and type of revisions made by students is strongly related to the types of comments teachers most often make, and that teachers' commenting emphasis, on either the content or conventions of writing, remain relatively consistent over the seven month term of the study. An examination of the differences between the comments made on high-, medium-, and low-level writers' papers indicate there is a tendency for the teachers to focus more on conventions of writing when responding on the lowlevel writers' papers than on medium- and high-level writers' papers. In addition, the number of associated student responses to teachers' comments varies depending on students' writing level, student-teacher relationships, and teacher expectations.
Machine Learning Identification of Impurities in the STM Images
Creators: name: Wang, Ce
name: Li, Haiwei
name: Hao, Zhenqi
name: Li, Xintong
name: Zou, Cangwei
name: Cai, Peng
name: Wang, Yayu
name: You, Yi-Zhuang
name: Zhai, Hui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this work we train a neural network to identify impurities in the experimental images obtained by the scanning tunneling microscope measurements. The neural network is first trained with large number of simulated data and then the trained neural network is applied to identify a set of experimental images taken at different voltages. We use the convolutional neural network to extract features from the images and also implement the attention mechanism to capture the correlations between images taken at different voltages. We note that the simulated data can capture the universal Friedel oscillation but cannot properly describe the non-universal physics short-range physics nearby an impurity, as well as noises in the experimental data. And we emphasize that the key of this approach is to properly deal these differences between simulated data and experimental data. Here we show that even by including uncorrelated white noises in the simulated data, the performance of neural network on experimental data can be significantly improved. To prevent the neural network from learning unphysical short-range physics, we also develop another method to evaluate the confidence of the neural network prediction on experimental data and to add this confidence measure into the loss function. We show that adding such an extra loss function can also improve the performance on experimental data. Our research can inspire future similar applications of machine learning on experimental data analysis.
description: 5 page, 5 figures
Stein surfaces as open subsets of C^2
Creators: name: Gompf, Robert E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Geometric Topology (math.GT)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32Q28; 32T05; 57N13

description: An open subset U of a complex surface can be topologically perturbed to yield an open subset whose inherited complex structure is Stein, if and only if U is homeomorphic to the interior of a handlebody whose handles all have index equal or less than 2.
description: Comments 23 pages, 5 figures, AMS-LaTeX v2: Overcompressed figures fixed. v3: Minor edits - this is the published version
Night-time measurements of astronomical seeing at Dome A in Antarctica
Creators: name: Ma, Bin
name: Shang, Zhaohui
name: Hu, Yi
name: Hu, Keliang
name: Wang, Yongjiang
name: Yang, Xu
name: Ashley, Michael C. B.
name: Hickson, Paul
name: Jiang, Peng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Seeing, the angular size of stellar images blurred by atmospheric turbulence, is a critical parameter used to assess the quality of astronomical sites. Median values at the best mid-latitude sites are generally in the range of 0.6--0.8\,arcsec. Sites on the Antarctic plateau are characterized by comparatively-weak turbulence in the free-atmosphere above a strong but thin boundary layer. The median seeing at Dome C is estimated to be 0.23--0.36 arcsec above a boundary layer that has a typical height of 30\,m. At Dome A and F, the only previous seeing measurements were made during daytime. Here we report the first direct measurements of night-time seeing at Dome A, using a Differential Image Motion Monitor. Located at a height of just 8\,m, it recorded seeing as low as 0.13\,arcsec, and provided seeing statistics that are comparable to those for a 20\,m height at Dome C. It indicates that the boundary layer was below 8\,m 31\% of the time. At such times the median seeing was 0.31\,arcsec, consistent with free-atmosphere seeing. The seeing and boundary layer thickness are found to be strongly correlated with the near-surface temperature gradient. The correlation confirms a median thickness of approximately 14\,m for the boundary layer at Dome A, as found from a sonic radar. The thinner boundary layer makes it less challenging to locate a telescope above it, thereby giving greater access to the free-atmosphere.
description: Published in Nature on July 29, 2020
Photospheric Emission in Gamma-ray Bursts: Variability
Creators: name: Wang, Kai
name: Lin, Da-Bin
name: Wang, Yun
name: Jiang, Lu-yao
name: Du, Shen-Shi
name: Li, Xiao-Yan
name: Ren, Jia
name: Wang, Xiang-gao
name: Liang, En-Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It is generally believed that the variability of photospheric emission in gamma-ray bursts (GRBs) traces that of the jet power. This work further investigates the variability of photospheric emission in a variable jet. By setting a constant $η$ (dimensionless entropy of the jet), we find that the light curve of the photospheric emission shows a ``tracking'' pattern on the time profile of jet power. However, the relative variability is significantly low in the photospheric emission compared with that in the jet power. If the $η$ is genetic variable, the variability of the photospheric emission is not only limited by the jet power but also affected by $η$ strongly. It becomes complex and is generally different from that of the jet power. Moreover, the opposite phase may stand in the variabilities of the photospheric emission at different photon energies. We also find that the relative variability does not remain constant over the photon energies with an obvious reduction at a certain energy. This is consistent with the analysis of GRB 090902B in which an appreciable thermal component has been detected in a wide energy range. For several other GRBs coupling with the thermal component, we conservatively evaluate the variability of the thermal and non-thermal emission, respectively. Our results show that the relative variability of the thermal emission is likely comparable to that of the non-thermal emission for these bursts. In addition, the analysis of GRB~120323A reveals that the variability of the photospheric emission may be of the opposite phase from that of the non-thermal emission.
description: 12 pages, 4 figures, Astrophysical Journal Accepted
Grade inflation versus grade improvement: Are our students getting more intelligent?
Creators: name: Jephcote, Calvin
Publisher: name: figshare
Year: 2020
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences

description: Jephcote C, Medland E, and Lygo-Baker S. (2020). Grade inflation versus grade improvement: Are our students getting more intelligent? Assessment & Evaluation in Higher Education. https://doi.org/10.1080/02602938.2020.1795617
Block-diagonalization of the linearized coupled-mode system
Creators: name: Chugunova, M.
name: Pelinovsky, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Dynamical Systems (math.DS)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 37K45

description: We consider the Hamiltonian coupled-mode system that occur in nonlinear optics, photonics, and atomic physics. Spectral stability of gap solitons is determined by eigenvalues of the linearized coupled-mode system, which is equivalent to a four-by-four Dirac system with sign-indefinite metric. In the special class of symmetric nonlinear potentials, we construct a block-diagonal representation of the linearized equations, when the spectral problem reduces to two coupled two-by-two Dirac systems. The block-diagonalization is used in numerical computations of eigenvalues that determine stability of gap solitons.
description: 16 pages, 2 figuresn
Influencia del Buffer del Router en la Distribucíon de Video P2P-TV
Creators: name: Quintana, Idelkys
name: Saldana, Jose
name: Mas, Jose Ruiz
name: Navajas, Julian Fernández
name: Pazos, Luis A. Casadesus
name: Sequeira, Luis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: This work presents a study of the behaviour of the router buffer when managing the traffic of P2P-TV applications, where a number of peers exchange video content. First, a summary of the characteristics of SOPCast is presented. Then, the results obtained in simulation tests using different buffer policies are presented. Real traces of the application, obtained from a research project, have been used for the tests, sharing the Internet access with different amounts of background traffic. The results show that a similar buffer behaviour for all the access technologies. In addition, the big amount of small packets generated may impair the video traffic, thus avoiding the retransmission of the contents by the application.
description: in Spanish
I. Hutter, Corpus der byzantinischen Miniaturenhandschriften, Bd. 1
Creators: name: Wessel, Klaus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 62 (1978): Oriens christianus, Band 62
Transcranial magnetic stimulation in humain cognition
Creators: name: Groppa, Stanislav A
name: Gasnas, Alexandru
Publisher: name: figshare
Year: 2020
Subjects: subject: 110904 Neurology and Neuromuscular Diseases
subject: FOS: Clinical medicine

description: In this systematic review, we will address to the basic concepts of using Transcranian magnetic stimulation (TMS) to assess human cognitive function. Following an introduction to cognitive neuroscience TMS will be considered in assessing the role in human cognitive performance and its possible mechanisms of action. Then will be examined how brain activity changes following TMS and guidelines for its use. In most of these studies of connectivity, TMS was applied to disrupt brain functionto demonstrate that a specific cortical area is essential to achieving a task carried in the study. Finally, we analyze the contributions of Transcranian magnetic stimulation in assessing human cognition.
Conditional quantum operation of two exchange-coupled single-donor spin qubits in a MOS-compatible silicon device
Creators: name: Mądzik, Mateusz T.
name: Laucht, Arne
name: Hudson, Fay E.
name: Jakob, Alexander M.
name: Johnson, Brett C.
name: Jamieson, David N.
name: Itoh, Kohei M.
name: Dzurak, Andrew S.
name: Morello, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Silicon nanoelectronic devices can host single-qubit quantum logic operations with fidelity better than 99.9%. For the spins of an electron bound to a single donor atom, introduced in the silicon by ion implantation, the quantum information can be stored for nearly 1 second. However, manufacturing a scalable quantum processor with this method is considered challenging, because of the exponential sensitivity of the exchange interaction that mediates the coupling between the qubits. Here we demonstrate the conditional, coherent control of an electron spin qubit in an exchange-coupled pair of $^{31}$P donors implanted in silicon. The coupling strength, $J = 32.06 \pm 0.06$ MHz, is measured spectroscopically with unprecedented precision. Since the coupling is weaker than the electron-nuclear hyperfine coupling $A \approx 90$ MHz which detunes the two electrons, a native two-qubit Controlled-Rotation gate can be obtained via a simple electron spin resonance pulse. This scheme is insensitive to the precise value of $J$, which makes it suitable for the scale-up of donor-based quantum computers in silicon that exploit the Metal-Oxide-Semiconductor fabrication protocols commonly used in the classical electronics industry.
description: 10 pages, 5 figures, plus Supplementary Information. v2 contains additional references, and a simpler explanation of two-qubit CROT gates for donors in silicon
Imaging Spin Reorientation Transitions in Consecutive Atomic Co layers
Creators: name: Gabaly, Farid El
name: Gallego, Silvia
name: Munoz, Carmen
name: Szunyogh, Laszlo
name: Weinberger, Peter
name: Klein, Christof
name: Schmid, Andreas K.
name: McCarty, Kevin F.
name: de la Figuera, Juan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: By means of spin-polarized low-energy electron microscopy (SPLEEM) we show that the magnetic easy-axis of one to three atomic-layer thick cobalt films on ruthenium crystals changes its orientation twice during deposition: one-monolayer and three-monolayer thick films are magnetized in-plane, while two-monolayer films are magnetized out-of-plane, with a Curie temperature well above room temperature. Fully-relativistic calculations based on the Screened Korringa-Kohn-Rostoker (SKKR) method demonstrate that only for two-monolayer cobalt films the interplay between strain, surface and interface effects leads to perpendicular magnetization.
description: 5 pages, 4 figures. Presented at the 2005 ECOSS conference in Berlin, and at the 2005 Fall meeting of the MRS. Accepted for publication at Phys. Rev. Lett., after minor changes
Estimating the Net Energy Balance of Corn Ethanol
Creators: name: Shapouri, Hosein
name: Duffield, James A.
name: Graboski, Michael S.
name: Shapouri, Hosein
name: Duffield, James A.
name: Graboski, Michael S.
Publisher: name: Unknown
Year: 1995
Subjects: subject: Resource /Energy Economics and Policy
subject: ethanol
subject: net energy balance
subject: corn production
subject: energy security

description: Studies conducted since the late 1970's have estimated the net energy value of corn ethanol. However, variations in data and assumptions used among the studies have resulted in a wide range of estimates. This study identifies the factors causing this wide variation and develops a more consistent estimate. We conclude that the net energy value of corn ethanol has become positive in recent years due to technological advances in ethanol conversion and increased efficiency in farm production. We show that corn ethanol is energy efficient as indicated by an energy ratio of 1.24.
Distinguishing Between Hierarchical and Lop-sided SO(10) Models
Creators: name: Rastogi, Parul
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A comparative study of two predictive SO(10) models, namely the BPW model (proposed by Babu, Pati and Wilczek) and the AB model (proposed by Albright and Barr) is done based on their predictions regarding CP and flavor violations. The values of Δm_K, ε_K, Δm_{B_d} and S(B_d\to J/ψK_S) are found, in both models, to be close to SM predictions, in good agreement with data. Both models predict that S(B_d\to ϕK_S) should lie in the range +0.65-0.74, close to the SM prediction and that the EDM of the neutron \approx (few\times 10^{-26})e-cm. It is found that $Br(μ\to eγ)$ in the AB model is generically much larger than that in the BPW model, being consistent with the experimental limit only with a rather heavy SUSY spectrum. The BPW model, on the other hand, is consistent with a much lighter SUSY spectrum. In the AB model d_e lies in the range 10^{-27}-10^{-28}e-cm. The BPW model gives d_e to be typically 100 times lower than that in the AB case. Thus the two models can be distinguished based on their predictions regarding CP and flavor violating processes, and can be tested in future experiments.
description: 34 pages
TOBACCO AND THE ECONOMY: FARMS, JOBS, AND COMMUNITIES
Creators: name: Gale, H. Frederick
name: Foreman, Linda F.
name: Capehart, Thomas C.
name: Gale, H. Frederick
name: Foreman, Linda F.
name: Capehart, Thomas C.
Publisher: name: Unknown
Year: 2000
Subjects: Community/Rural/Urban Development
Crop Production/Industries

description: Public health policies intended to reduce the incidence of smoking-related disease adversely affect thousands of tobacco farmers, manufacturers, and other businesses that produce, distribute, and sell tobacco products. This report assesses the likely impacts of declining tobacco demand, and identifies the types of workers, farms, businesses, and communities that are most vulnerable to loss of tobacco income and jobs. The dollar impact on the farm sector of a reduction in cigarette demand will be smaller than that experienced by manufacturing, wholesale, retail, and transportation businesses, but tobacco farms and their communities may have the most difficulty adjusting. Many tobacco farmers lack good alternatives to tobacco, and they have tobacco-specific equipment, buildings, and experience. Most communities will make the transition to a smaller tobacco industry with little difficulty, because tobacco accounts for a small share of the local economy. However, a number of counties depend on tobacco for a significant share of local income.
CEREBRAL NETWORK DISORDERS AFTER STROKE: CEREBRAL CONNECTIVITY STUDIES
Creators: name: Gasnas, Alexandru
Publisher: name: figshare
Year: 2020
Subjects: subject: 110904 Neurology and Neuromuscular Diseases
subject: FOS: Clinical medicine

description: Stroke induces changes in functional and effective connectivity within and across hemispheres which relate to motor impairments and recovery thereof. Connectivity analyses may hence provide new insights in to the pathophysiology underlying neurological deficits and may be further used to develop novel, neurobiologically informed treatment strategies.
Pushing the Limits of Ground-Based Photometric Precision -- Sub-Millimagnitude Time-Series Photometry of the Open Cluster NGC 6791
Creators: name: Hartman, J. D.
name: Stanek, K. Z.
name: Gaudi, B. S.
name: Holman, M. J.
name: McLeod, B. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results from a three night, time-series study of the open cluster NGC 6791 using the Megacam wide-field mosaic CCD camera on the 6.5m MMT telescope. The aim of this study was to demonstrate the ability to obtain very high precision photometry for a large number of stars. We achieved better than 1% precision for more than 8000 stars with 14.3 < R < 20.1 and sub-millimagnitude (as low as 0.36 mmag) precision for over 300 stars with 14.6 < R < 16.3 in the field of this cluster. We also discovered 8 new variable stars, including a possible delta-Scuti variable with an amplitude of 2%, 6 likely W UMa contact binaries, and a possible RS CVn star, and we identified 5 suspected low-amplitude variables, including one star with an amplitude of 3 mmag. We comment on the implications of this study for a ground-based survey for transiting planets as small as Neptune.
description: 12 pages, 7 figures, 1 table. Submitted to the AJ
Variational approach to the scattering of charged particles by a many-electron system
Creators: name: Nazarov, V. U.
name: Nishigaki, S.
name: Pitarke, J. M.
name: Kim, C. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a variational approach to the nonlinearly screened interaction of charged particles with a many-electron system. This approach has been developed by introducing a modification of the Schwinger variational principle of scattering theory, which allows to obtain nonperturbative scattering cross-sections of moving projectiles from the knowledge of the linear and quadratic density-response functions of the target. Our theory is illustrated with a calculation of the energy loss per unit path length of slow antiprotons moving in a uniform electron gas, which shows good agreement with a fully nonlinear self-consistent Hartree calculation. Since available self-consistent calculations are restricted to low heavy-projectile velocities, we expect our theory to have novel applications to a variety of processes where nonlinear screening plays an important role.
description: 10 pages, 2 figures; Accepted to Physical Review B
Distinguishing New Physics Scenarios at a Linear Collider with Polarized Beams
Creators: name: Pankov, A. A.
name: Paver, N.
name: Tsytrinov, A. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Numerous non-standard dynamics are described by contact-like effective interactions that can manifest themselves through deviations of the cross sections from the Standard Model predictions. If one such deviation were observed, one should try to identify to a given confidence level the actual source among the possible non-standard interactions that in principle can explain it. We here estimate the potential identification reach on different New Physics effective interactions, obtainable from the angular distributions of lepton pair production processes at the planned International Linear Collider with polarized beams. The models discussed are the interactions based on gravity in large and in TeV^{-1} extra dimensions and the compositeness-inspired four-fermion contact interactions. The availability of both beams polarized in many cases plays an essential role in enhancing the identification sensitivity.
description: 21 pages, LaTex, 11 figures. One author was missing from the previous version. The authors list has been completed, no other changes
Studies of e+e- Collisions with a Hard Initial-State Photon at BaBar
Creators: name: Berger, Nicolas
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present preliminary BaBar measurements of hadronic cross sections in $e^+e^-$ annihilation using the radiative return technique. The cross sections for $e^+e^- \to p\bar{p} $, $ 3(π^+π^-)$, $ 2(π^+π^-)2π^0$, and $ K^+K^-2(π^+π^-)$ are measured. Measurements of the proton form factor and of the ratio $G_E/G_M$ are also shown.
description: 4 pages, 9 postscript figues, contributed to the Proceedings of HADRON05, this version fixes additional typos
From Dusty Filaments to Cores to Stars: An Infrared Extinction Study of Lupus 3
Creators: name: Teixeira, Paula S.
name: Lada, Charles J.
name: Alves, Joao F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present deep NIR observations of a dense region of Lupus 3 obtained with ESO's NTT and VLT. Using the NICE method we construct a dust extinction map of the cloud, which reveals embedded globules, a dense filament, and a dense ring structure. We derive dust column densities and masses for the entire cloud and for the individual structures therein. We construct radial extinction profiles for the embedded globules and find a range of profile shapes from relatively shallow profiles for cores with low peak extinctions, to relatively steep profiles for cores with high extinction. Overall the profiles are similar to those of pressure truncated isothermal spheres of varying center-to-edge density contrast. We apply Bonnor-Ebert analysis to compare the density profiles of the embedded cores in a quantitative manner and derive physical parameters such as temperatures, central densities, and external pressures. We examine the stability of the cores and find that two cores are likely stable and two are likely unstable. One of these latter cores is known to harbor an active protostar. Finally, we discuss the relation between an emerging cluster in Lupus 3 and the ring structure identified in our extinction map. Assuming that the ring is the remnant of the core within which the cluster originally formed we estimate that a star formation efficiency of ~ 30% characterized the formation of the small cluster. Our observations of Lupus 3 suggest an intimate link between the structure of a dense core and its state of star forming activity. The dense cores are found to span the entire range of evolution from a stable, starless core of modest central concentration, to an unstable, star-forming core which is highly centrally concentrated, to a significantly disrupted core from which a cluster of young stars is emerging.
description: Accepted for publication in the Astrophysical Journal. Go to http://cfa-www.harvard.edu/~clada/ or http://cfa-www.harvard.edu/~pteixeir/ a version with higher resolution figures
Economic Assessment of Food Safety Regulations: The New Approach to Meat and Poultry Inspection
Creators: name: Crutchfield, Stephen R.
name: Buzby, Jean C.
name: Roberts, Tanya
name: Ollinger, Michael
name: Lin, Chung-Tung Jordan
name: Crutchfield, Stephen R.
name: Buzby, Jean C.
name: Roberts, Tanya
name: Ollinger, Michael
name: Lin, Chung-Tung Jordan
Publisher: name: Unknown
Year: 1997
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Livestock Production/Industries
subject: food safety
subject: foodborne illness
subject: microbial pathogens
subject: meat and poultry inspection
subject: HACCP
subject: cost of illness
subject: consumer education
subject: irradiation

description: USDA is now requiring all Federally inspected meat and poultry processing and slaughter plants to implement a new system called Hazard Analysis and Critical Control Points (HACCP) to reduce potentially harmful microbial pathogens in the food supply. This report finds that the benefits of the new regulations, which are the medical costs and productivity losses that are prevented when foodborne illnesses are averted, will likely exceed the costs, which include spending by firms on sanitation, temperature control, planning and training, and testing. Other, nonregulatory approaches can also improve food safety, such as providing market incentives for pathogen reduction, irradiation, and education and labeling to promote safe food handling and thorough cooking.
Quantum correlations in dipolar droplets: Time-dependent Hartree-Fock-Bogoliubov theory
Creators: name: Boudjemaa, Abdelaali
name: Guebli, Nadia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the effects of quantum correlations on dipolar quantum droplets. To this end,we derive self-consistent time-dependent Hartree-Fock-Bogoliubov equations that fairly describe the dynamics of the order parameter, the normal, and anomalous quantum correlations of the droplet. We analyze the density profiles, the critical number of particles, the condensate depletion, and the pair correlation function. Our predictions are compared with very recent experimental and Quantum Monte-Carlo simulations results and excellent agreement is found.
description: 6 pages and 4 figures
Mechanisms of Recovery from Stroke Using Repetitive Transcranial Magnetic Stimulation (rTMS)
Creators: name: Gasnas, Alexandru
name: Groppa, Stanislav A
Publisher: name: figshare
Year: 2020
Subjects: subject: 110904 Neurology and Neuromuscular Diseases
subject: FOS: Clinical medicine

description: Functional recovery might be obtained either when rTMS is applied at low-frequency (around 1 Hz) over the disinhibited, unaffected hemisphere in order to restore defective inhibition or when rTMS is applied at high-frequency (5 Hz or more) over the affected hemisphere in order to reactivate hypoactive regions. The overall procedure, remains to be optimized, in particular regarding the number of rTMS sessions and the time of rTMS application after stroke.Cortical stimulation is an exciting perspective for improvingfunctional recovery from stroke. Transient application ofnon-invasive transcranial stimulation during the time of therehabilitation process will be preferable to the temporary implantation of epidural cortical electrodes, as recently proposed.Therefore, in the future, acute or recent stroke might be amajor indication of rTMS in neurological practice.
Ochterus philippinensis Kormilev 1971
Creators: name: Kment, Petr
name: Carapezza, Attilio
name: Jindra, Zdeněk
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Ochteridae
Ochterus
Ochterus philippinensis

description: Ochterus philippinensis Kormilev, 1971
 Ochterus philippinensis Kormilev, 1971: 434, 436 –437 (description, differential diagnosis, illustrations). HOLOTYPE:, Philippines: Mindoro: ‘ San Joseʼ (CASC).
 Ochterus philippinensis: GAPUD & SAN VALENTIN (1977): 272, 281, 291–292 (key to species, redescription, illustration); GAPUD (1981): 303 –304, 307 (diagnosis,illustrations); GAPUD (2003):107 (checklist); CHEN et al. (2005): 413 (checklist).
  Distribution. Oriental Region:  Philippines: Mindoro (KOR- MILEV 1971, GAPUD & SAN VALENTIN 1977, GAPUD 1981).
  Ochterus piliferus Kormilev, 1973
 Ochterus piliferus Kormilev, 1973: 2, 6 –8 (description, differential diagnosis, illustrations). HOLOTYPE:, Angola: ʻVila Luso, Moxico’ (CASC).
  Distribution. Afrotropical Region:  Angola (KORMILEV 1973).
description: Published as part of Kment, Petr, Carapezza, Attilio & Jindra, Zdeněk, 2020, Taxonomic catalogue of the family Ochteridae with description of Ochterus papaceki sp. nov. from Socotra Island and Tanzania (Hemiptera: Heteroptera), pp. 23-64 in Acta Entomologica Musei Nationalis Pragae 60 (1) on pages 45-46, DOI: 10.37520/aemnp.2020.003, http://zenodo.org/record/3879659
Post-outburst radio observation of the region around McNeil's nebula (V1647 Ori)
Creators: name: Vig, S.
name: Ghosh, S. K.
name: Kulkarni, V. K.
name: Ojha, D. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present post-outburst (~ 100 days after outburst) radio continuum observation of the region (~ 30' x 30') around McNeil's nebula (V1647 Orionis). The observations were carried out using the Giant Metrewave Radio Telescope (GMRT), India, at 1272 MHz on 2004 Feb 14.5 UT. Although 8 sources have been detected within a circular diameter of 25' centred on V1647 Ori, we did not detect any radio continuum emission from McNeil's nebula. We assign a 5-sigma upper limit of 0.15 mJy/beam for V1647 Ori where the beam size is 5.6" x 2.7". Even at higher frequencies of 4.9 and 8.5 GHz (VLA archival data), no radio emission has been detected from this region. Three scenarios namely, emission from homogeneous HII region, ionised stellar wind and shock ionised gas, are explored in the light of our GMRT upper-limit. For the case of homogeneous HII region, the radius of the emitting region is constrained to be ~ 2,500 K, which is consistent with the reported radio and H-alpha emission. In the ionised stellar wind picture, our upper limit of radio emission translates to the ratio of mass loss rate and terminal velocity, (M_dot/v_infinity) < 1.2-1.8 x 10^(-10) (M_sun/yr)/(km/s). On the other hand, if the stellar wind shocks the dense neutral (molecular) cloud, the radio upper limit implies that the fraction of the wind encountering the dense obstacle is <50%. Based on a recent measurement of X-ray outburst and later monitoring, the expected radio emission has been estimated. Using our radio limit, the radius (~ 7.2 x 10^7 cm^(-3) of the radio emitting plasma have been constrained using a two phase medium in pressure equilibrium for a volume filling factor of 0.9.
description: To appear in Astronomy and Astrophysics (8 pages including 1 Table and 3 Figures)
Opinion on 'Responsible Dual Use' Political, Security, Intelligence and Military Research of Concern in Neuroscience and Neurotechnology
Creators: name: Aicardi, Christine
name: Bitsch, Lise
name: Bang Bådum, Nicklas
name: Datta, Saheli
name: Evers, Kathinka
name: Farisco, Michele
name: Fothergill, Tyr
name: Giordano, James
name: Harris, Emma
name: Jørgensen, Marie Louise
name: Klüver, Lars
name: Mahfoud, Tara
name: Rainey, Stephen
name: Riisgaard, Karen
name: Rose, Nikolas
name: Salles, Arleen
name: Stahl, Bernd
name: Ulnicane, Inga
Publisher: name: Zenodo
Year: 2021
Subjects: Ethics
Society
Dual Use
defence and security in the European Union
Responsible Dual Use
Political, Security, Intelligence and Military Research of Concern
Stakeholder Engagement
Citizen Engagement
Human Brain Project

description: Abstract:  Current and newly emerging insights and technologies arising from research in brain sciences increase capabilities to access, assess and affect thought, emotion and behaviour. While much of this research and development is directed towards clinical use, it also has applications in other settings, notably in the political, security, intelligence and military (PSIM) domains. This is often referred to in terms of ‘Dual Use’. Many of these potential uses raise important social and ethical questions which demand the attention of all those involved in the research, administration, management and regulation of neuroscience research and related technological developments, including those in information and communication technologies (ICT) and robotics. In this Opinion, we suggest that we can increase our ability to identify which programmes and projects of research, development and innovation are ‘of concern’ by applying the principles of Responsible Research and Innovation (RRI) to the concept of ‘dual use’ and distinguishing between ‘responsible’ and ‘irresponsible’ systems of research and technological development. We therefore use the term ‘dual use research of concern’ (DURC) to refer to neuroscience research and technological innovations, and brain inspired developments in information and communication technologies, for use in the political, security, intelligence and military domains, which are either directly of concern because of their potential for use in ways that threaten the peace, health, safety, security and well-being of citizens, or are undertaken without responsible regard to such potential uses. To ensure ongoing attention to these issues, the Opinion proposes recommendations for the Human Brain Project, the European Union and the wider neuroscience and ICT community.
description: The research leading to this result has received funding from the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No. 720270 (HBP SGA1)
Atrazine: Environmental Characteristics and Economics of Management
Creators: name: Ribaudo, Marc
name: Bouzaher, Aziz
name: Ribaudo, Marc
name: Bouzaher, Aziz
Publisher: name: Unknown
Year: 1994
Subjects: Crop Production/Industries

description: Restricting or eliminating the use of atrazine in the Midwest would have important economic consequences for farmers and consumers. Atrazine is an important herbicide in the production of corn and other crops in the United States. Since atrazine is such an important herbicide, mandatory changes in application strategies are likely to generate sizable costs for producers and consumers. However, recent findings indicate that elevated amounts of atrazine are running off fields and entering surface water resources. This report presents the costs and benefits of an atrazine ban, a ban on pre-plant and pre-emergent applications, and a targeted ban to achieve a surface water standard. A complete atrazine ban is hypothesized to be the costliest strategy, while the targeted strategy is the least costly.
Dalit Women in Modern India- Beyond the Standpoint Theory and Above the Women’s Study Narratives.pdf
Creators: name: Oza, Preeti
Publisher: name: figshare
Year: 2020
Subjects: subject: 140301 Cross-Sectional Analysis
subject: FOS: Economics and business
subject: Sociology
subject: FOS: Sociology

description: Contemporary India is a backward capitalist society with a number of feudal cultural remnants. When we contextualise the institution of caste in the contemporary political and economic structure, we understand a clear dichotomy in the positioning of „man‟ and a „woman‟ in it. Any theoretical account of gender power equation and women‟s oppression must be firmly located in the social power context. Dalit women in India are situated at a very crucial juncture right now where they have to cross three thresholds simultaneously: class, class and patriarchy. These are the three hierarchical axes of social structure which are crucial to the understanding of gender relations and the oppression of Dalit women.The roots to this lie in the first millennial traditional Brahminical law code, the Manusmriti, which continues to shape the unwritten norms in Indian society. It enjoins social, economic and political practices as a religious duty which are severely discriminatory of women and the non-dwija (twice-born, privileged groups). For instance, it says that the „untouchables‟ should only live in huts, not own any domestic assets, only cook in clay pots, wear only cast-off clothing, and own no property. The twice born had the first rights over their labour and anything they own, as they are created to be slaves
Timelike surfaces in Lorentz covariant loop gravity and spin foam models
Creators: name: Alexandrov, Sergei
name: Kadar, Zoltan
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct a canonical formulation of general relativity for the case of a timelike foliation of spacetime. The formulation possesses explicit covariance with respect to Lorentz transformations in the tangent space. Applying the loop approach to quantize the theory we derive the spectrum of the area operator of a two-dimensional surface. Its different branches are naturally associated to spacelike and timelike surfaces. The results are compared with the predictions of Lorentzian spin foam models. A restriction of the representations labeling spin networks leads to perfect agreement between the states as well as the area spectra in the two approaches.
description: a wrong sign corrected in equation (65)
Dark Energy: the equation of state description versus scalar-tensor or modified gravity
Creators: name: Capozziello, S.
name: Nojiri, S.
name: Odintsov, S. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Dark energy dynamics of the universe can be achieved by equivalent mathematical descriptions taking into account generalized fluid equations of state in General Relativity, scalar-tensor theories or modified F(R) gravity in Einstein or Jordan frames. The corresponding technique transforming equation of state description to scalar-tensor or modified gravity is explicitly presented. We show that such equivalent pictures can be discriminated by matching solutions with data capable of selecting the true physical frame.
description: LaTeX file, 10 pages, 3 figures, the fit of two equivalent models with observational data is added, new references