cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Symmetry in the changing jets of SS433 and its true distance from us
Creators: name: Blundell, Katherine
name: Bowler, Michael
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the deepest yet radio image of the Galactic jet source, SS433, which reveals over two full precession cycles (> 2 x 163 days) of the jet axis. Systematic and identifiable deviations from the traditional kinematical model for the jets are found: variations in jet speed, lasting for as long as tens of days, are necessary to match the detailed structure of each jet. It is remarkable that these variations are equal and opposite, matching the two jets simultaneously. This explains certain features of the correlated redshift residuals found in fits to the kinematic model of SS433 reported in the literature. Asymmetries in the image caused by light travel time enabled us to measure the jet speeds of particular points to be within a range from 0.24c to 0.28c, consistent with, yet determined independently from, the speeds derived from the famous moving optical emission lines. Taken together with the angular periodicity of the zigzag/corkscrew structure projected on the plane of the sky (produced by the precession of the jet axis), these measurements determine beyond all reasonable doubt the distance to SS433 to be 5.5 +/- 0.2 kpc, significantly different from the distance most recently inferred using neutral hydrogen measurements together with the current rotation model for the Galaxy.
description: accepted by ApJ Letters
Probing photon-ALP oscillations from the MAGIC observations of FSRQ QSO B1420+326
Creators: name: Pant, Bhanu Prakash
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: At the beginning of 2020, MAGIC reported a very-high-energy (VHE) flaring activity from the FSRQ QSO B1420+326. It is now the fourth known most distant blazar (z=0.682) with an observed VHE gamma-ray emission. In this work, we investigate the effect of photon-axionlike particle (ALP) oscillations in the gamma-ray spectra measured by Fermi-LAT and MAGIC around the flaring state. We set 95% C.L. upper limit on the ALP parameters and obtain a constraint on the photon-ALP coupling constant $g_{aγ} < 2\times10^{-11}$ GeV$^{-1}$ for ALP masses $m_{a} \sim 10^{-10}-10^{-9}$ eV. Assuming the hadronic origin of VHE photons, we also estimate the expected neutrino flux from this source and the contribution to diffuse neutrino flux from QSO B1420+326-like FSRQs at sub-PeV energies. Furthermore, we study the implications of photon-ALP oscillations on the counterpart $γ$-rays of the sub-PeV neutrinos. Finally, we investigate a viable scenario of invisible neutrino decay to ALPs on the gamma-ray spectra and diffuse $γ$-ray flux at sub-PeV energies. Interestingly, we find that for the choice of neutrino lifetime $τ_{2}/m_{2} = 10^3$ s eV$^{-1}$, the $γ$-ray flux has a good observational sensitivity towards LHAASO-KM2A.
description: 11 pages, 7 figures; Published version
Prospects for observing gravitational forces between nonclassical mechanical oscillators
Creators: name: Liu, Yulong
name: Mummery, Jay
name: Sillanpää, Mika A.
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: Interfacing quantum mechanics and gravity is one of the great open questions in natural science. Micromechanical oscillators have been suggested as a plausible platform to carry out these experiments. We present an experimental design aiming at these goals, inspired by Schmöle et al., Class. Quantum Grav. 33, 125031 (2016). Gold spheres weighing on the order a milligram will be positioned on large silicon nitride membranes, which are spaced at submillimeter distances from each other. These mass-loaded membranes are mechanical oscillators that vibrate at $\sim 2$ kHz frequencies in a drum mode. They are operated and measured by coupling to microwave cavities. First, we show that it is possible to measure the gravitational force between the oscillators at deep cryogenic temperatures, where thermal mechanical noise is strongly suppressed. We investigate the measurement of gravity when the positions of the gravitating masses exhibit significant quantum fluctuations, including preparation of the massive oscillators in the ground state, or in a squeezed state. We also present a plausible scheme to realize an experiment where the two oscillators are prepared in a two-mode squeezed motional quantum state that exhibits nonlocal quantum correlations and gravity the same time. Although the gravity is classical, the experiment will pave the way for testing true quantum gravity in related experimental arrangements. In a proof-of-principle experiment, we operate a 1.7 mm diameter Si$_3$N$_4$ membrane loaded by a 1.3 mg gold sphere. At 10 mK temperature, we observe the drum mode with a quality factor above half a million at 1.7 kHz, showing strong promise for the experiments. Following implementation of vibration isolation, cryogenic positioning, and phase noise filtering, we foresee that realizing the experiments is in reach by combining known pieces of current technology.
description: Minor modifications and additions
Jet velocity in SS433: its anti-correlation with precession-cone angle and dependence on orbital phase
Creators: name: Blundell, Katherine
name: Bowler, Michael
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a re-analysis of the optical spectroscopic data on SS433 from the last quarter-century and demonstrate that these data alone contain systematic and identifiable deviations from the traditional kinematic model for the jets: variations in speed, which agree with our analysis of recent radio data; in precession-cone angle and in phase. We present a simple technique for separating out the jet speed from the angular properties of the jet axis, assuming only that the jets are symmetric. With this technique, the archival optical data reveal that the variations in jet speed and in precession-cone angle are anti-correlated in the sense that when faster jet bolides are ejected the cone opening angle is smaller. We also find speed oscillations as a function of orbital phase.
description: accepted by ApJ Letters
Designing morphology of separated phases in multicomponent liquid mixtures
Creators: name: Mao, Sheng
name: Chakraverti-Wuerthwein, Milena S.
name: Gaudio, Hunter
name: Kosmrlj, Andrej
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Phase separation of multicomponent liquid mixtures plays an integral part in many processes ranging from industry to cellular biology. In many cases the morphology of coexisting phases is crucially linked to the function of the separated mixture, yet it is unclear what determines morphology when multiple phases are present. We developed a graph theory approach to predict the topology of coexisting phases from a given set of surface energies (forward problem), enumerate all topologically distinct morphologies, and reverse engineer conditions for surface energies that produce the target morphology (inverse problem).
description: 6 pages, 4 figures + Supplemental Material (5 pages, 4 figures). Videos available at http://www.princeton.edu/~akosmrlj/papers/phase_separation_design/videos/
Integral field spectroscopy of the ultraluminous X-ray source Holmberg II X-1
Creators: name: Lehmann, I.
name: Becker, T.
name: Fabrika, S.
name: Roth, M.
name: Miyaji, T.
name: Afanasiev, V.
name: Sholukhova, O.
name: Sanchez, S. F.
name: Greiner, J.
name: Hasinger, G.
name: Costantini, E.
name: Surkov, A.
name: Burenkov, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present optical integral field observations of the H II region containing the ultraluminous X-ray source Holmberg II X-1. We confirm the existence of an X-ray ionized nebula as the counterpart of the source due to the detection of an extended He II (4686A) region (21 x 47 pc) at the Chandra ACIS-S position. An extended blue objects with a size of 11 x 14 pc is coincident with the X-ray/He II region, which could indicate either a young stellar complex or a cluster. We have derived an X-ray to optical luminosity ratio of Lx/Lb>170, and presumable it is Lx/Lb~300-400 using the recent HST ACS data. We find a complex velocity dispersion at the position of the ULX. In addition, there is a radial velocity variation in the X-ray ionized region found in the He II emission of +-50 km/s on spatial scales of 2-3 arcsec. We believe that the putative black hole not only ionizes the surrounding HII gas, but also perturbs it dynamically (via jets or the accretion disk wind). The spatial analysis of the public Chandra ACIS-S data reveals a point-like X-ray source and marginal indication of an extended component (<<15 % of the total flux). The XMM-Newton EPIC-PN spectrum of HoII X-1 is best fitted with an absorbed power-law in addition to either a thermal thick plasma or a thermal thin plasma or a multi-colour disk black body (MCD). In all cases, the thermal component shows relatively low temperatures (kT~0.14-0.22 keV). Finally we discuss the optical/X-ray properties of HoII X-1 with regards to the possible nature of the source.
description: 15 pages, 15 figures, 6 tables. Accepted for publication in A&A
From Heisenberg to Hubbard: An initial state for the shallow quantum simulation of correlated electrons
Creators: name: Murta, Bruno
name: Fernández-Rossier, Joaquín
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The widespread use of the noninteracting ground state as the initial state for the digital quantum simulation of the Fermi-Hubbard model is largely due to the scarcity of alternative easy-to-prepare approximations to the exact ground state in the literature. Exploiting the fact that the spin-$\frac{1}{2}$ Heisenberg model is the effective low-energy theory of the Fermi-Hubbard model at half-filling in the strongly interacting limit, here we propose a three-step deterministic quantum routine to prepare an educated guess of the ground state of the Fermi-Hubbard model through a shallow circuit suitable for near-term quantum hardware. First, the ground state of the Heisenberg model is initialized via a hybrid variational method using an ansatz that explores only the correct symmetry subspace. Second, a general method is devised to convert a multi-spin-$\frac{1}{2}$ wave function into its fermionic version. Third, taking inspiration from the Baeriswyl ansatz, a constant-depth single-parameter layer that adds doublon-holon pairs is applied to this fermionic state. Numerical simulations on chains and ladders with up to 12 sites confirm the improvement over the noninteracting ground state of the overlap with the exact ground state for the intermediate values of the interaction strength at which quantum simulation is bound to be most relevant.
description: Main text: 4 pages, 3 figures. Supp. Mat.: 10 pages, 9 figures
Progress towards the study of Li+Rb ultra-cold collisions
Creators: name: Kong, Tao
Publisher: name: University of British Columbia
Year: 2010

description: The work described in this thesis is related to two projects I worked on towards the ultracold collisions experiment between fermionic lithium and bosonic rubidium atoms in our lab. The first part is about the simulation of sympathetic cooling of Bose-Fermi mixture inside the magnetic trap. An original single species code, which was specially designed for simulating the forced radio-frequency evaporation of ¹³³Cs atoms in the magnetic trap (within harmonic approximation), is developed so that it can simulate the dynamics of a multi-species trap including iriter-atomic collisions and honharmonic trapping potentials, and thus aid in the design of our future degenerate gas experiments. To validate the consistence between our multi-species code and the original single-species code, a comparison was tried using the parameters from Clauz Zimmermann's sympathetic cooling of fermionic Lithium using Rubidium atoms. The result shows a very good consistence between the multi-species and single species codes. Based on the same parameters from Zimmermann's experiment, another comparison is performed to check the influence of different macro-atom distributions on the simulation results when the total number of real atoms is constant, since the number of macro-atoms determines how fast the simulation can run. The result shows that using less number of macro-atoms (2¹¹ vs 2¹³) won't effect the simulation too much and we can use less number of macro-atoms to speed up the simulation. The second part of this thesis is concerned with the design of the experimental apparatus to study hetero-nuclear Feshbach resonances between Lithium and Rubidium. The strategy for this study was discussed in the experimental setup section, in which the required experimental subsystems for the Feshbach resonance studies were discussed, such as the vacuum system, the atomic sources for both species. This work also involved some experiments to calibrate the alkali metal dispensers to be used in this apparatus. A model was created to describe the Rubidium partial pressure in room temperature, parameters required by this model was calibrated by an absorption experiment, in which the Rubidium resonant laser was sent through a vapor cell.
title: The Discursive Construction Of Child Sexual Abuse
Creators: name: Worrell, Marcia Lorraine
Publisher: name: The Open University
Year: 2001

description: Currently in the English speaking world adult/child sex and knowledge about it has become firmly located within a taken-for-granted 'child sexual abuse' discourse. My argument in this thesis is that despite being commonly portrayed as a singularity, the discursive arena of adult/child sex is a site of controversy and conflict, invested with meanings that differ over time and place. Child sexual abuse cannot thus be thought of as something that exists outside of the situated knowledge through which its taken-for-granted nature is brought into being and maintained. A stated aim of this thesis is, therefore, to explore some of the complex, heterogeneous and nuanced ways in which adult/child sex is put into discourse as child sexual abuse.

The analytics of Beryl Curt and Michel Foucault were applied to Q Methodology, participant observation and a range of ethnographically informed methodologies. The Q Methodological study revealed five explanatory accounts. These were explicated as a Mainstream Professional Account; Boy-Love; A Liberal Account of Child Sexual Abuse; Sexual Abuse as Paraphilia and a Feminist lnformed Account. The Q study also revealed three standpoints on child sexual abuse: Feminist/Child Protectionist; Social Constructionist/Children's Rights; and Childhood Sexuality. Three alternative viewpoints on the social policies that should be adopted in this area were also identified in this study. These were explicated as Libertarian; Control and Protect and Liberal Humanism . Also examined were the performative aspects of the phenomenon of child sexual abuse through an interrogation of the subject position that are available (to survivors of sexual abuse, convicted child sex offenders and those who advocate adult/child sexual contact), to be adopted, resisted or reformed. The thesis ends with a review of the main findings of my research in terms of theory. practice and research in the area of child sexual abuse. It also examines methodological issues and reflects upon my own experiences of conducting this work.
title: “Our World Is Ruled by Insensitivity”: The #MeToo Movement and Transformation
Creators: name: Adamiecka-Sitek, Agata
Publisher: name: Instytut Im. Jerzego Grotowskiego We Wrocławiu (Wydawca); Wydział Polonistyki UJ (Współwydawca)
Year: 2021

description: The article analyzes the transformational potential of the #MeToo movement in terms of personal experience, institutional and social transformations, looking first of all at the dynamics the movement has created in theatre in Poland and around the world. The author unveils the systemic dimension of violence encoded in invisible and standardized relations of domination and subordination, inscribed in the two models which are still very common in Polish theatre: the “master and apprentice” model defining the position of a director and the “feudal” model visible in institutional relations. Looking at the Gardzienice case and the reactions of the public to the testimonies exposing violence, the author also mentions examples of institutional and systemic reactions to similar situations in British and Belgian theatre. In this way, she outlines possible directions for action in Polish theatre. She asks questions about the transformative and emancipatory potential of the #MeToo movement, emphasizing the necessity to consider an intersectional perspective, to build alliances and to practice promiscuous care.

Keywords: #MeToo, discrimination, intersectionality, Gardzienice, institutional critique
Ultralight vector dark matter search with auxiliary length channels of gravitational wave detectors
Creators: name: Michimura, Yuta
name: Fujita, Tomohiro
name: Morisaki, Soichiro
name: Nakatsuka, Hiromasa
name: Obata, Ippei
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Recently, a considerable amount of attention has been given to the search for ultralight dark matter by measuring the oscillating length changes in the arm cavities of gravitational wave detectors. Although gravitational wave detectors are extremely sensitive for measuring the differential arm length changes, the sensitivity to dark matter is largely attenuated, as the effect of dark matter is mostly common to arm cavity test masses. Here, we propose to use auxiliary length channels, which measure the changes in the power and signal recycling cavity lengths and the differential Michelson interferometer length. The sensitivity to dark matter can be enhanced by exploiting the fact that auxiliary interferometers are more asymmetric than two arm cavities. We show that the sensitivity to $U(1)_{B-L}$ gauge boson dark matter with masses below $7\times 10^{-14}$ eV can be greatly enhanced when our method is applied to a cryogenic gravitational wave detector KAGRA, which employs sapphire test masses and fused silica auxiliary mirrors. We show that KAGRA can probe more than an order of magnitude of unexplored parameter space at masses around $1.5 \times 10^{-14}$ eV, without any modifications to the existing interferometer.
description: 6 pages, 3 figures
$1/f^α$ spectra in elementary cellular automata and fractal signals
Creators: name: Nagler, Jan
name: Claussen, Jens Christian
Publisher: name: arXiv
Year: 2004
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We systematically compute the power spectra of the one-dimensional elementary cellular automata introduced by Wolfram. On the one hand our analysis reveals that one automaton displays $1/f$ spectra though considered as trivial, and on the other hand that various automata classified as chaotic/complex display no $1/f$ spectra. We model the results generalizing the recently investigated Sierpinski signal to a class of fractal signals that are tailored to produce $1/f^α$ spectra. From the widespread occurrence of (elementary) cellular automata patterns in chemistry, physics and computer sciences, there are various candidates to show spectra similar to our results.
description: 4 pages (3 figs included)
Fermion Proca Stars: Vector Dark Matter Admixed Neutron Stars
Creators: name: Jockel, Cédric
name: Sagunski, Laura
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Dark matter could accumulate around neutron stars in sufficient amounts to affect their global properties. In this work, we study the effect of a specific model for dark matter -- a massive and self-interacting vector (spin-1) field -- on neutron stars. We describe the combined systems of neutron stars and vector dark matter using Einstein-Proca theory coupled to a nuclear-matter term, and find scaling relations between the field and metric components in the equations of motion. We construct equilibrium solutions of the combined systems, compute their masses and radii and also analyse their stability and higher modes. The combined systems admit dark matter (DM) core and cloud solutions. Core solutions compactify the neutron star component and tend to decrease the total mass of the combined system. Cloud solutions have the inverse effect. Electromagnetic observations of certain cloud-like configurations would appear to violate the Buchdahl limit. This could make Buchdahl-limit violating objects smoking gun signals for dark matter in neutron stars. The self-interaction strength is found to significantly affect both mass and radius. We also compare fermion Proca stars to objects where the dark matter is modelled using a complex scalar field. We find that fermion Proca stars tend to be more massive and geometrically larger than their scalar field counterparts for equal boson masses and self-interaction strengths. Both systems can produce degenerate masses and radii for different amounts of DM and DM particle masses.
description: 20 pages, 11 figures, supersedes arXiv:2308.12174. v2: Content matches published version in Particles (open access) https://www.mdpi.com/2571-712X/7/1/4
Meta-Research: COVID-19 medical papers have fewer women first authors than expected
Creators: name: Andersen, Jens Peter
name: Nielsen, Mathias Wullum
name: Simone, Nicole L.
name: Lewiss, Resa E.
name: Jagsi, Reshma
Publisher: name: arXiv
Year: 2020
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: The COVID-19 pandemic has resulted in school closures and distancing requirements that have disrupted both work and family life for many. Concerns exist that these disruptions caused by the pandemic may not have influenced men and women researchers equally. Many medical journals have published papers on the pandemic, which were generated by researchers facing the challenges of these disruptions. Here we report the results of an analysis that compared the gender distribution of authors on 1,893 medical papers related to the pandemic with that on papers published in the same journals in 2019, for papers with first authors and last authors from the United States. Using mixed-effects regression models, we estimated that the proportion of COVID-19 papers with a woman first author was 19% lower than that for papers published in the same journals in 2019, while our comparisons for last authors and overall proportion of women authors per paper were inconclusive. A closer examination suggested that women's representation as first authors of COVID-19 research was particularly low for papers published in March and April 2020. Our findings are consistent with the idea that the research productivity of women, especially early-career women, has been affected more than the research productivity of men.
description: Submitted to eLife. First revision
Additional file 3 of Web-based exercise versus supervised exercise for decreasing visceral adipose tissue in older adults with central obesity: a randomized controlled trial
Creators: name: Ballin, Marcel
name: Hult, Andreas
name: Björk, Sabine
name: Lundberg, Emmy
name: Nordström, Peter
name: Nordström, Anna
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 3. Written description of the exercises used in the training program.
Discovery of Irradiation Induced Variations in the Light Curve of the Classical Nova Cygni 2001 No.2 (V2275 Cyg)
Creators: name: Balman, S.
name: Yilmaz, A.
name: Retter, A.
name: Saygac, T.
name: Esenoglu, H.
name: .
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the CCD photometry, light curve and time series analysis of the classical nova V2275 Cyg (N Cyg 2001 No.2). The source was observed for 14 nights in total using an R filter in 2002 and 2003 with the 1.5 m Russian-Turkish joint telescope (RTT150) at the TUBITAK (The Scientific and Technical Research Council of Turkey) National Observatory in Antalya Turkey, as part of a large program on the CCD photometry of Cataclysmic Variables (CVs). We report the detection of two distinct periodicities in the light curve of the nova : a) P_1=0.31449(15) d -- 7.6 h, b) P_2=0.017079(17) d -- 24.6 min. The first period is evident in both 2002 and 2003 whereas the second period is only detected in the 2003 data set. We interpret the first period as the orbital period of the system and attribute the orbital variations to aspect changes of the secondary irradiated by the hot WD. We suggest that the nova was a Super Soft X-ray source in 2002 and, perhaps, in 2003. The second period could be a QPO originating from the oscillation of the ionization front (due to a hot WD) below the inner Lagrange point as predicted by King (1989) or a beat frequency in the system as a result of the magnetic nature of the WD if steady accretion has already been re-established.
description: 6 pages and 8 figures. Accepted to be published in MNRAS main Journal as it stands
الكفاءة الاقتصادية والفنية لنظم الحصاد الالى
Creators: name: Soliman, Ibrahim
name: M.Younis, Samy
name: M.Megahed, Maissa
name: Soliman, Ibrahim
name: M.Younis, Samy
name: M.Megahed, Maissa
Publisher: name: Unknown
Year: 2001
Subjects: subject: Crop Production/Industries
subject: Land Economics/Use
subject: Production Economics
subject: Technical and Economic Efficiency of Mechanization Harvesting Systems for Rice in Egypt
subject: Egypt
subject: rice
subject: Mechanization Harvesting Systems

description: Previous studies have shown that harvesting and plowing are the two most costly and labor intensive farm operations of grains. The combine conducts threshing and winnowing besides harvesting. Japanese combines are the widely spread and commonly- among other combines. Therefore, this study's objectives were to determine the most efficient Japanese combine for rice harvesting in Egypt. A set of technical and economic criteria as well as economic functions were estimated to evaluate the combine performances. Data used were the operating and financial records of the most common four combines for rice in Egypt in ace of the main agricultural engineering stations belonging to the ministry of agriculture. Results showed that whereas three combine types have not recognized the technical recommended operating rate, the "Kobotta 48 hp" achieved an operating rate of 115% The conduction rate ( number of hours to conduct one feddan) decreased along the useful life years of the combine . Within a certain brand the higher the combine power the less is the rate of conduction . It was 3.3 hrs for `Ynimar 33 hp", and 2.8 hrs for- 38 hp" while it was 1.93 hrs for "Kobotta 35 hp" and 1.66 hrs for -Kohere 48 hp". The brand "Kobotta" performed a higher relative profit margin per one pound of revenue than "Ynimar" brand . The most effective input in the variation of the profit per year is the served area followed by the costs of repair and horsepower, while the fuel and oil costs were insignificant. However, the first two effective variables are beyond the control of farm management . While the area served is a resultant of the demand for such service, the costs of repair and maintenance are to great extend a function of risk and uncertainty. Therefore the combine's power is the most decidable variable by the system operator. The higher the average costs (L.E./feddan. hp) the higher is the rate of conduction . Finally the quadratic estimated response faction showed that the optimum power in terms of horsepower that maximize the profit per combine per year is about 47 hp. All economic and technical criteria measured concluded that "Kobotta 48 hp" is the most efficient system for rice harvesting in Egypt. It is also concluded that the rental price of the combine should be associated with the operating hours rather than the served area.
description: Egyptian Journal of Agricultural Economics, Volume 11, No 1, March 2001. Published by Egyptian Association of Agricultural Economics, Egypt
Additional file 1 of PEACE V – Salvage Treatment of OligoRecurrent nodal prostate cancer Metastases (STORM): a study protocol for a randomized controlled phase II trial
Creators: name: A. De Bruycker
name: A. Spiessens
name: P. Dirix
name: N. Koutsouvelis
name: I. Semac
name: N. Liefhooghe
name: A. Gomez-Iturriaga
name: W. Everaerts
name: F. Otte
name: A. Papachristofilou
name: M. Scorsetti
name: M. Shelan
name: S. Siva
name: F. Ameye
name: M. Guckenberger
name: R. Heikkilä
name: P. M. Putora
name: A. Zapatero
name: A. Conde-Moreno
name: F. Couñago
name: F. Vanhoutte
name: E. Goetghebeur
name: D. Reynders
name: T. Zilli
name: P. Ost
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 1.
Cross-correlation between the thermal Sunyaev-Zeldovich effect and the Integrated Sachs-Wolfe effect
Creators: name: Ibitoye, Ayodeji
name: Dai, Wei-Ming
name: Ma, Yin-Zhe
name: Vielva, Patricio
name: Tramonte, Denis
name: Abebe, Amare
name: Beesham, Aroonkumar
name: Chen, Xuelei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a joint cosmological analysis of the power spectra measurement of the Planck Compton parameter and the integrated Sachs-Wolfe (ISW) maps. We detect the statistical correlation between the Planck Thermal Sunyaev-Zeldovich (tSZ) map and ISW data with a significance of a $3.6σ$ confidence level~(CL), with the autocorrelation of the Planck tSZ data being measured at a $25 σ$ CL. The joint auto- and cross-power spectra constrain the matter density to be $Ω_{\rm m}= 0.317^{+0.040}_{-0.031}$, the Hubble constant $H_{0}=66.5^{+2.0}_{-1.9}\,{\rm km}\,{\rm s}^{-1}\,{\rm Mpc}^{-1}$ and the rms matter density fluctuations to be $σ_{8}=0.730^{+0.040}_{-0.037}$ at the 68% CL. The derived large-scale structure $S_{8}$ parameter is $S_8 \equiv σ_{8}(Ω_{\rm m}/0.3)^{0.5} = 0.755\pm{0.060} $. If using only the diagonal blocks of covariance matrices, the Hubble constant becomes $H_{0}=69.7^{+2.0}_{-1.5}\,{\rm km}\,{\rm s}^{-1}\,{\rm Mpc}^{-1}$. In addition, we obtain the constraint of the product of the gas bias, gas temperature, and density as $b_{\rm gas} \left(T_{\rm e}/(0.1\,{\rm keV}) \right ) \left(\bar{n}_{\rm e}/1\,{\rm m}^{-3} \right) = 3.09^{+0.320}_{-0.380}$. We find that this constraint leads to an estimate on the electron temperature today as $T_{\rm e}=(2.40^{+0.250}_{-0.300}) \times 10^{6} \,{\rm K}$, consistent with the expected temperature of the warm-hot intergalactic medium. Our studies show that the ISW-tSZ cross-correlation is capable of probing the properties of the large-scale diffuse gas.
description: 25 pages, 15 figures, 2 tables
title: Examination of strategic challenges for powertrain component suppliers to fulfil the changing demands of OEMs during the transition from traditional combustion engines to the electric mobility
Creators: name: Lauda, Ulrich
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Volatility
subject: automotive industry
subject: flexibilisation
subject: cross fertilisation
subject: transition to E-Mobility
subject: Diesel-downturn
subject: exchangeability
subject: strategic purchasing
subject: nomination
subject: flexibility

description: Several different forecasts regarding the market shares of different ICE-technologies (Internal Combustion Engine - technologies) and electrified cars makes a prognosis of the needs of engine parts nearly unpredictable. Especially during actual nomination processes of Diesel engine parts OEMs have to cover a broad spectrum of scenarios which results also in new evaluations of suppliers. Challenging requests of the customers purchasing departments shouldn’t exacerbate offer processes, but rather prepare part providers and make them aware about upcoming difficulties. Therefore the examination shall cover the biggest challenges for suppliers during the transition to electric vehicles in the automotive premium segment and show how to prepare themselves for the nomination process. The changing demands and priorities of original equipment manufacturers during nomination processes of combustion engine components and the suppliers possibly to prepare themselves for requests for quotation (RFQ) concerning upcoming combustion engine projects will be analysed. To create a meaningful overview suppliers will be evaluated with a questionnaire, generated in collaboration with the strategic purchasing department. The readiness regarding the volatility of the market and the general future orientation shall be identified and also integrated in the final decision making process. By comparing the results of several part providers of BMW (Bayerische Motoren Werke) which were finally nominated for combustion engine projects from 2020 onwards the relevance of the new criteria shall be proofed. Deviations have to be analysed to get an idea under which circumstances suppliers were selected with at least single negative evaluations. By showing the necessity of fulfilling these new demands the most important points for applying suppliers are summarized to provide some identified key characteristics for a successful nomination. Besides the overall comparison of theoretical requests and real criteria for a supplier nomination especially the analysis of exceptions shall give an idea about the possibility to get nominations without fulfilling all demands of the OEM. After the analysis of combustion engine parts the differences to electric vehicle components shall be shown and how traditional suppliers can follow the path to the EMobility. Finally the necessary adaptions of the questionnaire shall be examined to identify the volatility challenges also for electric component RFQs.
Orbital and mass constraints of the young binary system IRAS 16293-2422 A
Creators: name: Maureira, Maria Jose
name: Pineda, Jaime E.
name: Segura-Cox, Dominique M.
name: Caselli, Paola
name: Testi, Leonardo
name: Lodato, Giuseppe
name: Loinard, Laurent
name: Hernandez-Gomez, Antonio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 3 mm ALMA continuum and line observations at resolutions of 6.5 au and 13 au respectively, toward the Class 0 system IRAS 16293-2422 A. The continuum observations reveal two compact sources towards IRAS 16293-2422 A, coinciding with compact ionized gas emission previously observed at radio wavelengths (A1 and A2), confirming the long-known radio sources as protostellar. The emission towards A2 is resolved and traces a dust disk with a FWHM size of ~12 au, while the emission towards A1 sets a limit to the FWHM size of the dust disk of ~4 au. We also detect spatially resolved molecular kinematic tracers near the protostellar disks. Several lines of the J=5-4 rotational transition of HNCO, NH2CHO and t-HCOOH are detected, with which we derived individual line-of-sight velocities. Using these together with the CS (J=2-1), we fit Keplerian profiles towards the individual compact sources and derive masses of the central protostars. The kinematic analysis indicates that A1 and A2 are a bound binary system. Using this new context for the previous 30 years of VLA observations, we fit orbital parameters to the relative motion between A1 and A2 and find the combined protostellar mass derived from the orbit is consistent with the masses derived from the gas kinematics. Both estimations indicate masses consistently higher (0.5< M1
description: Accepted for publication in ApJ. 23 pages, 14 figures, 4 tables
Time-evolution of the Rule 150 cellular automaton activity from a Fibonacci iteration
Creators: name: Claussen, Jens Christian
Publisher: name: arXiv
Year: 2004
Subjects: subject: Combinatorics (math.CO)
subject: Dynamical Systems (math.DS)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 37B15,11B39,28A80,11B50,11B85,68Q45,68Q80

description: The total activity of the single-seeded cellular rule 150 automaton does not follow a one-step iteration like other elementary cellular automata, but can be solved as a two-step vectorial, or string, iteration, which can be viewed as a generalization of Fibonacci iteration generating the time series from a sequence of vectors of increasing length. This allows to compute the total activity time series more efficiently than by simulating the whole spatio-temporal process, or even by using the closed expression.
description: 4 pages (3 figs included)
Additional file 1 of The burden of laboratory-confirmed influenza infection in Lebanon between 2008 and 2016: a single tertiary care center experience
Creators: name: Assaf-Casals, Aia
name: Saleh, Zeina
name: Khafaja, Sarah
name: Fayad, Danielle
name: Ezzeddine, Hady
name: Saleh, Mohammad
name: Chamseddine, Sarah
name: Sayegh, Rouba
name: Sharara, Sima L.
name: Chmaisse, Ahmad
name: Kanj, Souha S.
name: Kanafani, Zeina
name: Hanna-Wakim, Rima
name: Araj, George F.
name: Mahfouz, Rami
name: Saito, Reiko
name: Suzuki, Hiroshi
name: Zaraket, Hassan
name: Dbaibo, Ghassan S.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Additional file 1: Table S1. Presenting symptoms of laboratory-confirmed influenza cases according to different age groups. Table S2. Results of multivariable logistic regression for independent risk factors associated with increased mortality. Table S3. Characteristics of patients receiving antiviral therapy over the study period.
Hybrid quantum states in 2d dilaton gravity
Creators: name: Potaux, Yohan
name: Sarkar, Debajyoti
name: Solodukhin, Sergey N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The classical black hole spacetime is modified semiclassically, depending strongly on the choice of the quantum states. In particular, for the Boulware state the spacetime often takes a wormhole structure mimicking closely a spacetime with a horizon. In this paper, in the context of the two-dimensional dilaton RST model, we consider all possible important interplays between the Hartle-Hawking, Unruh and Boulware quantum states. Special attention is given to the hybrid states made up of quantum fields either in the Hartle-Hawking or Unruh states, and some non-physical fields (with the wrong sign in the kinetic term in the action) in the Boulware state. We present a detailed analysis of the semiclassical geometry in all these cases paying attention to the presence or absence of horizons, curvature singularities and to the geodesic completeness of the spacetime. In the space of parameters specifying the generic quantum state, we find a wide domain (with dominating non-physical fields) where the semiclassical geometry represents a geodesically complete, asymptotically flat causal diamond, free of horizon or curvature singularity. However, a distant observer still finds Hawking radiation at asymptotic infinity. In the Unruh-Boulware hybrid state solution, we find that the energy flux at asymptotic infinity receives important corrections from its thermal behavior, leading to information recovery as we go from early to late retarded times. As a result, the corresponding entropy shows a typical Page curve bahavior.
description: 53 pages, 11 figures, 1 table
الكفاءة التسويقية السعرية لأسواق اللحوم الحمراء والألبان
Creators: name: Soliman, Ibrahim
name: Soliman, Ibrahim
Publisher: name: Unknown
Year: 2007
Subjects: subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Farm Management
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Marketing efficiency of markets price of red meat and dairy
subject: dairy
subject: marketing
subject: red meat

description: Project study of animal products marketing systems in Egypt. Academy of Scientific Research, Livestock Research Council. Faculty of Agriculture, Zagazig University. November 2007.
Collective vibrations of a hydrodynamic active lattice
Creators: name: Thomson, Stuart J.
name: Durey, Matthew
name: Rosales, Rodolfo R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Recent experiments show that quasi-one-dimensional lattices of self-propelled droplets exhibit collective instabilities in the form of out-of-phase oscillations and solitary-like waves. This hydrodynamic lattice is driven by the external forcing of a vertically vibrating fluid bath, which invokes a field of subcritical Faraday waves on the bath surface, mediating the spatio-temporal droplet coupling.By modelling the droplet lattice as a memory-endowed system with spatially nonlocal coupling, we herein rationalise the form and onset of instability in this new class of dynamical oscillator. We identify the memory-driven instability of the lattice as a function of the number of droplets, and determine equispaced lattice configurations precluded by geometrical constraints. Each memory-driven instability is then classified as either a super- or sub-critical Hopf bifurcation \emph{via} a systematic weakly nonlinear analysis, rationalising experimental observations. We further discover a previously unreported symmetry-breaking instability, manifest as an oscillatory-rotary motion of the lattice. Numerical simulations support our findings and prompt further investigations of this nonlinear dynamical system.
description: 27 pages, 8 figures
The Meservey-Tedrov effect in FSF double tunneling junctions
Creators: name: Bergmann, Gerd
name: Lu, Jia
name: Wang, Dawei
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Double tunneling junctions of ferromagnet-superconductor-ferromagnet electrodes (FSF) show a jump in the conductance when a parallel magnetic field reverses the magnetization of one of the ferromagnetic electrodes. This change is generally attributed to the spin-valve effect or to pair breaking in the superconductor because of spin accumulation. In this paper it is shown that the Meservey-Tedrov effect causes a similar change in the conductance since the magnetic field changes the energy spectrum of the quasi-particles in the superconductor. A reversal of the bias reverses the sign in the conductance jump.
Improved walker population control for full configuration interaction quantum Monte Carlo
Creators: name: Yang, Mingrui
name: Pahl, Elke
name: Brand, Joachim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Full configuration interaction quantum Monte Carlo (FCIQMC) is a stochastic approach for finding the ground state of a quantum many-body Hamiltonian. It is based on the dynamical evolution of a walker population in Hilbert space, which samples the ground state configuration vector over many iterations. Here we present a modification of the original protocol for walker population control of Booth et al. JCP 131, 054106 (2009) in order to achieve equilibration at a pre-defined average walker number and to avoid walker number overshoots. The dynamics of the walker population is described by a noisy damped harmonic oscillator and controlled by two parameters responsible for damping and forcing, respectively, for which reasonable values are suggested. We further introduce a population growth witness that can be used to detect annihilation plateaus related to overcoming the FCIQMC sign problem. Features of the new population control procedure such as precise walker number control and fast equilibration are demonstrated. The standard error of the shift estimator for the ground state energy as well as the population control bias are found to be unaffected by the population control procedure or its parameters. The improved control of the walker number, and thereby memory consumption, is a desirable feature required for automating FCIQMC calculations and requires minimal modifications to existing code.
description: 15 pages, 10 figures. Submitted to the Journal of Chemical Physics