cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mechanisms in Adaptive Feedback Control: Photoisomerization in a Liquid
Creators: name: Hoki, Kunihito
name: Brumer, Paul
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The underlying mechanism for Adaptive Feedback Control in the experimental photoisomerization of NK88 in methanol is exposed theoretically. With given laboratory limitations on laser output, the complicated electric fields are shown to achieve their targets in qualitatively simple ways. Further, control over the cis population without laser limitations reveals an incoherent pump-dump scenario as the optimal isomerization strategy. In neither case are there substantial contributions from quantum multiple-path interference or from nuclear wavepacket coherence. Environmentally induced decoherence is shown to justify the use of a simplified theoretical model.
description: 10 pages, 3 figures, to be published in Phys. Rev. Lett
Prioritized constraints in the design of a situated robot
Creators: name: Muyan-Ozcelik, P.
Publisher: name: University of British Columbia
Year: 2009

description: This thesis investigates whether the extended Constraint-Based Agent (CBA) framework with prioritized constraints, using the Constraint Nets in Java (CNJ) tool, is an effective methodology for designing and building Situated Agents in the real world. As an illustrative case study of this design methodology, a situated robot called Ainia, that repeatedly finds, tracks, chases and kicks a soccer ball in the field has been first designed and simulated in CNJ. After modelling the controller, the body, and the environment as separate modules and creating an animation of the system under CNJ, the controller module of Ainia is used unchanged to control a physical robot. The body and environment modules are replaced by the physical robot plant and the external real world, respectively. The results of the study show that the behaviour of the real robot satisfies the constraint-based requirements specification while demanding no changes in the controller. Hence, this thesis provides evidence that the extended CBA approach is an effective framework for Situated Agent construction. It also supports the claim that CNJ is an effective tool for designing and building Situated Agents operating in the real world.
ERON VA MARKAZIY OSIYO DAVLATLARI HAMKORLIK ALOQALARINING BOSHLANISHI DAVLATLARARO MUNOSABATLARNING RIVOJLANISHI.
Creators: name: O'lmasov, Sardorbek
Publisher: name: Zenodo
Year: 2025

description: Markaziy Osiyo mintaqasi Sharq va G’arbni bog’lovchi Buyuk Ipak yo’li chorrahasida joylashgan geostrategik joylashuvi bilan alohida o’rin tutadi. Sovet ittifoqi qulaganidan keyin Markaziy Osiyoda yangi respublikalarning vujudga kelishi Eronning shimoli-sharqiy hududlari geosiyosatini o’zgartirdi. Shu tariqa, taxminan besh asr davomida Eronning bevosita ta’siridan tashqarida bo’lgan mintaqada Eronning rolini qayta tiklash imkoniyati qayta uyg’ondi. Eron va Iroq o’rtasida 8 yillik urushning tugashi va Markaziy Osiyo davlatlarining mustaqillikka erishgani Tehronning yangi imkoniyati sifatida ushbu mintaqadagi respublikalarga e’tibor qaratishiga sabab bo’ldi.
ERMITTLUNG DER WIRTSCHAFTLICHKEIT DES ENERGIEHOLZANBAUS IN KURZUMTRIEBSPLANTAGEN – RISIKOANALYSE MIT HILFE DER MONTE-CARLO-SIMULATION
Creators: name: Krober, Mathias
name: Hank, Klaus
name: Heinrich, Jurgen
name: Wagner, Peter
name: Krober, Mathias
name: Hank, Klaus
name: Heinrich, Jurgen
name: Wagner, Peter
Publisher: name: Unknown
Year: 2008
Subjects: subject: Production Economics
subject: Productivity Analysis
subject: Risk and Uncertainty
subject: Risikoanalyse
subject: Monte-Carlo-Simulation
subject: Wirtschaftlichkeit
subject: Kurzumtriebsplantage

description: In jüngerer Zeit hat sich die Rolle der Landwirtschaft deutlich gewandelt. Neben der Erzeugung von hochwertigen Nahrungsmitteln stellt für einen Großteil der Branche der Anbau von Energiepflanzen zur Rohstoffgewinnung ein weiteres wichtiges Standbein in der landwirtschaftlichen Produktion dar. Ein Beispiel ist unter anderem die Erzeugung von Holzbiomasse auf landwirtschaftlichen Flächen in Form des Anbaus von schnellwachsenden Baumarten. Eine anhand von Literaturdaten durchgeführte Risikoanalyse der Wirtschaftlichkeit des Anbaus von schnellwachsenden Baumarten in Kurzumtriebsplantagen mittels Monte-Carlo-Simulation zeigt, dass dieser momentan für sich betrachtet zwar in der Mehrzahl der Fälle wirtschaftlich ist, verglichen mit um die Anbaufläche konkurrierenden Marktfrüchten allerdings kaum bestehen kann. Daher wird es schwierig sein, ohne flankierende Maßnahmen Landwirte zu animieren, ihren Beitrag zur Deckung des zukünftigen Biomassebedarfs zur Energieerzeugung durch die Holzproduktion auf landwirtschaftlichen Flächen zu leisten.
Intelligent support of interactive manual control : design, implementation and evaluation of Look-Ahead Haptic Guidance
Creators: name: Forsyth, Benjamin A. C.
Publisher: name: University of British Columbia
Year: 2009

description: Intelligent systems are increasingly able to offer real-time information relevant to a user's manual control of an interactive system; however, effective presentation of this information creates many challenges. We consider how to use force feedback to convey information to a user about dynamic system control space constraints that have been computed by an intelligent system. Effective display of control constraints will require careful consideration of the usability of the forces, in addition to good technical design, to assure user acceptance of the feedback. Possible dynamic systems that can benefit from this kind of interaction feedback are tasks such as driving and the control of physically-based animations. In this thesis, we studied the haptic display of control constraints in a simple driving simulation. We developed a 'look-ahead' guidance method to display usable haptic guidance suggestions to a driver based upon the predicted location of the vehicle relative to the road, and implemented this using a custom vehicle simulator based on Reynolds's Open- Steer framework. The performance and usability of our Look-Ahead Guidance method are compared to a baseline of No-Guidance, and to Potential Field Guidance, the current state-of- the-art haptic path guidance method. Our experimental results show that Look-Ahead Guidance was more usable and showed performance benefits in our task compared to both No-Guidance and to Potential Field Guidance. We identified several factors that we suspect affect the usability of haptic path guidance and suggest future work based on these observations.
ZUR WIRKUNGSWEISE EINES OUTPUTORIENTIERTEN AGRARUMWELTPROGRAMMS
Creators: name: Mann, Stefan
name: Mann, Stefan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Environmental Economics and Policy
subject: Output-oriented programme
subject: Switzerland
subject: Configural frequency analysis

description: Im Rahmen der Ökoqualitätsverordnung (ÖQV) erhalten Schweizer Landwirte Direktzahlungen, wenn eine definierte Mindestanzahl seltener Arten auf ihrem Grünland stehen, wofür Transaktionskosten nur etwa in der Höhe wie bei konventionellen Agrarumweltprogrammen entstehen. Dieser Beitrag beschäftigt sich mit der Effektivität dieses outputorientierten Programms. Eine Konfiguralfrequenzanalyse zeigt, dass Landwirte, die an der ÖQV teilnehmen, mit nur geringer Wahrscheinlichkeit ihre Teilnahme an Agrarumweltprogrammen reduzieren. Es wird die Schlussfolgerung gezogen, dass outputorientierte Agrarumweltprogramme ein effizientes Mittel zur Erlangung ökologischer Qualität sind.
Short-living supermassive magnetar model for the early X-ray flares following short GRBs
Creators: name: Gao, W. H.
name: Fan, Y. Z.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We suggest a short-living supermassive magnetar model to account for the X-ray flares following short $γ-$ray bursts. In this model, the central engine of the short $γ-$ray bursts is a supermassive millisecond magnetar. The X-ray flares are powered by the dipole radiation of the magnetar. When the magnetar has lost a significant part of its angular momentum, it collapses to a black hole and the X-ray flares disappear abruptly. Two important predictions of this model are (i) X-ray flares much more energetic than that detected in GRB 050724 may be detectable in the coming months and years by the XRT onboard {\it Swift}. (ii) The short GRBs with X-ray flares may occur outside of their host galaxy.
description: The final version. Possible mechanisms giving rise to multiple flares in the magnetar wind model have been discussed
Chemical composition of evolved stars of high galactic latitude
Creators: name: Giridhar, Sunetra
name: Ferro, A. Arellano
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have carried out abundance analysis for a sample of high galactic latitude supergiants in search of evolved stars. We find that HD 27381 has atmospheric parameters and an abundance pattern very similar to that of the post-AGB star HD 107369. HD 10285 and HD 25291 are moderately metal-poor and show the influence of mixing that has brought the products of NeNa cycle to the surface. The high galactic latitude B supergiant HD 137569 shows selective depletion of refractory elements normally seen in post-AGB stars. We find that the high velocity B type star HD 172324 shows moderate deficiency of Fe group elements but the CNO abundances are very similar to that of disk B supergiants. The observed variations in the radial velocities, transient appearance of emission components in hydrogen line profiles and doubling of O I lines at 7774Åsupport the possibility of this star being a pulsating variable or a binary star.
description: 12 pages, 6 figures. Accepted in A&A
Accuracy of an Atomic Microwave Power Standard
Creators: name: Paulusse, David C.
name: Rowell, Nelson L.
name: Michaud, Alain
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We have built an atomic microwave power standard based on the electromagnetic interaction with laser-cooled atoms. The atoms traversed a waveguide transmission line, and under the effect of the radiation, the internal state populations underwent a Rabi flopping oscillation. Measurement of the oscillation frequency allowed the determination of the incident microwave power. As many of 60 oscillations were observed over a dynamic range of 20 dB and the standard deviation of the measurements was about 0.02%. The measured frequency was compared to a calculated one and an agreement of 1.3% with an uncertainty of 5% (rectangular) was found.
description: 5 figures
FEATURES OF THE TYPES OF GAMES IN INTERACTION BUSINESS CORPORATIONS, THEIR EMPLOYEES AND SOCIETY
Creators: name: Arsenyev Yu.
name: Minaev, V.
name: Davydova, T.
name: Morenova, K.
Publisher: name: Sciences of Europe
Year: 2021
Subjects: management
organization
methods
subjects of activity
communication
competition.

description: The types of organizational, political and social games in the interaction of business corporations, their human resources and the whole society are investigated. The methods of designing and forms of organizational architecture of business corporations are considered, taking into account the competitive advantages of their human assets
A Polarization Encoded Photon-to-Spin Interface
Creators: name: Chen, Kevin C.
name: Bersin, Eric
name: Englund, Dirk
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose an integrated photonics device for mapping qubits encoded in the polarization of a photon onto the spin state of a solid-state defect coupled to a photonic crystal cavity: a `Polarization-Encoded Photon-to-Spin Interface' (PEPSI). We perform a theoretical analysis of the state fidelity's dependence on the device's polarization extinction ratio and atom-cavity cooperativity. Furthermore, we explore the rate-fidelity trade-off through analytical and numerical models. In simulation, we show that our design enables efficient, high fidelity photon-to-spin mapping.
Stochastic Properties of Static Friction
Creators: name: Albertini, Gabriele
name: Karrer, Simon
name: Grigoriu, Mircea D.
name: Kammer, David S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The onset of frictional motion is mediated by rupture-like slip fronts, which nucleate locally and propagate eventually along the entire interface causing global sliding. The static friction coefficient is a macroscopic measure of the applied force at this particular instant when the frictional interface loses stability. However, experimental studies are known to present important scatter in the measurement of static friction; the origin of which remains unexplained. Here, we study the nucleation of local slip at interfaces with slip-weakening friction of random strength and analyze the resulting variability in the measured global strength. Using numerical simulations that solve the elastodynamic equations, we observe that multiple slip patches nucleate simultaneously, many of which are stable and grow only slowly, but one reaches a critical length and starts propagating dynamically. We show that a theoretical criterion based on a static equilibrium solution predicts quantitatively well the onset of frictional sliding. We develop a Monte-Carlo model by adapting the theoretical criterion and pre-computing modal convolution terms, which enables us to run efficiently a large number of samples and to study variability in global strength distribution caused by the stochastic properties of local frictional strength. The results demonstrate that an increasing spatial correlation length on the interface, representing geometric imperfections and roughness, causes lower global static friction. Conversely, smaller correlation length increases the macroscopic strength while its variability decreases. We further show that randomness in local friction properties is insufficient for the existence of systematic precursory slip events. Random or systematic non-uniformity in the driving force, such as potential energy or stress drop, is required for arrested slip fronts. Our model and observations...
Off equilibrium fluctuations in a polymer glass
Creators: name: Buisson, L.
name: Ciliberto, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The fluctuation-dissipation relation (FDR) is measured on the dielectric properties a polymer glass (polycarbonate). It is observed that the fluctuation dissipation theorem is strongly violated for a quench from above to below the glass transition temperature. The amplitude and the persistence time of this violation are decreasing functions of frequency. Around $1Hz$ it may persist for several hours. The origin of this violation is a highly intermittent dynamics characterized by large fluctuations a strongly non-Gaussian statistics. The intermittent dynamics depends on the quenching rate and it disappears after slow quenches. The relevance of these results for recent models of aging are discussed.
description: submitted to Physica D
Additional file 2 of Sustainable by design: a systematic review of factors for health promotion program sustainability
Creators: name: Bodkin, Andrea
name: Hakimi, Shawn
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: Plant Biology
subject: 60506 Virology
subject: Computational Biology

description: Additional file 2: Appendix C. Results of quality assessment of the included 16 papers with final ratings.
Additional file 1 of Association between parental separation and addictions in adolescents: results of a National Lebanese Study
Creators: name: Jabbour, Nour
name: Rached, Vanessa Abi
name: Haddad, Chadia
name: Salameh, Pascale
name: Sacre, Hala
name: Hallit, Rabih
name: Soufia, Michel
name: Obeid, Sahar
name: Hallit, Souheil
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Table S1. Multivariate analysis of covariance (MANCOVA). Note: In the global model, the independent variable is Parents status (living together* vs. separate). Covariates are: age, gender, mouhafaza, house crowding index and physical activity score. *Reference group.
A Radio Polarimetric Study to Disentangle AGN Activity and Star-Formation in Seyfert Galaxies
Creators: name: Sebastian, Biny
name: Kharb, P.
name: Dea, C. P. O'
name: Gallimore, J. F.
name: Baum, S. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: To understand the origin of radio emission in radio-quiet AGN and differentiate between the contributions from star formation, AGN accretion, and jets, we have observed a nearby sample of Seyfert galaxies along with a comparison sample of starburst galaxies using the EVLA in full-polarization mode in the B-array configuration. The radio morphologies of the Seyfert galaxies show lobe/bubble-like features or prominent cores in radio emission whereas the starburst galaxies show radio emission spatially coincident with the star-forming regions seen in optical images. There is tentative evidence that Seyferts tend to show more polarized structures than starburst galaxies at the resolution of our observations. We find that unlike a sample of Seyfert galaxies hosting kilo-parsec scale radio (KSR) emission, starburst galaxies with superwinds do not show radio-excess compared to the radio-FIR correlation. This suggests that shock acceleration is not adequate to explain the excess radio emission seen in Seyferts and hence most likely have a jet-related origin. We also find that the [O III] luminosity of the Seyferts is correlated with the off-nuclear radio emission from the lobes, whereas it is not well correlated with the total emission which also includes the core. This suggests strong jet-medium interaction, which in turn limits the jet/lobe extents in Seyferts. We find that the power contribution of AGN jet, AGN accretion, and star formation is more or less comparable in our sample of Seyfert galaxies. We also find indications of episodic AGN activity in many of our Seyfert galaxies.
description: Accepted for publication in MNRAS
Additional file 1 of Sustainable by design: a systematic review of factors for health promotion program sustainability
Creators: name: Bodkin, Andrea
name: Hakimi, Shawn
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: Plant Biology
subject: 60506 Virology
subject: Computational Biology

description: Additional file 1: Appendix A and B. Search strategy examples. Full MEDLINE search strategy, and repository and general web search for grey literature.
Chiral Fermions and Quadratic Divergences
Creators: name: Calmet, Xavier
name: Frampton, Paul H.
name: Rohm, Ryan M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In an approach towards naturalness without supersymmetry, renormalization properties of nonsupersymmetric abelian quiver gauge theories are studied. In the construction based on cyclic groups Z_p the gauge group is U(N)^p, the fermions are all in bifundamentals and the construction allows scalars in adjoints and bifundamentals. Only models without adjoint scalars, however, exhibit both chiral fermions and the absence of one-loop quadratic divergences in the scalar propagator.
description: 11 pages
Morphology and Evolution of Simulated and Optical Clusters: A Comparative Analysis
Creators: name: Rahman, Nurur
name: Krywult, Janusz
name: Motl, Patrick M.
name: Flin, Piotr
name: Shandarin, Sergei F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have made a comparative study of morphological evolution in simulated DM halos and X-ray brightness distribution, and in optical clusters. Samples of simulated clusters include star formation with supernovae feedback, radiative cooling, and simulation in the adiabatic limit at three different redshifts, z = 0.0, 0.10, and 0.25. The optical sample contains 208 ACO clusters within redshift, $z \leq 0.25$. Cluster morphology, within 0.5 and 1.0 h$^{-1}$ Mpc from cluster center, is quantified by multiplicity and ellipticity. We find that the distribution of the dark matter halos in the adiabatic simulation appear to be more elongated than the galaxy clusters. Radiative cooling brings halo shapes in excellent agreement with observed clusters, however, cooling along with feedback mechanism make the halos more flattened. Our results indicate relatively stronger structural evolution and more clumpy distributions in observed clusters than in the structure of simulated clusters, and slower increase in simulated cluster shapes compared to those in the observed one. Within $z \leq 0.1$, we notice an interesting agreement in the shapes of clusters obtained from the cooling simulations and observation. We also notice that the different samples of observed clusters differ significantly in morphological evolution with redshift. We highlight a few possibilities responsible for the discrepancy in morphological evolution of simulated and observed clusters.
description: Accepted for publication in MNRAS, 2006; 15 pages, 13 postscript figures
ÖKONOMISCHE ANALYSE REDUZIERTER BODENBEARBEITUNG IN ABHÄNGIGKEIT VON DER STICKSTOFFDÜNGUNG UNTER BESONDERER BERÜCKSICHTIGUNG DES PRODUKTIONSRISIKOS
Creators: name: Meyer-Aurich, Andreas
name: Gandorfer, Markus
name: Gerl, Georg
name: Kainz, Max
name: Meyer-Aurich, Andreas
name: Gandorfer, Markus
name: Gerl, Georg
name: Kainz, Max
Publisher: name: Unknown
Year: 2008
Subjects: subject: Environmental Economics and Policy
subject: Reduzierte Bodenbearbeitung
subject: Stickstoffdüngung
subject: Risikoanalyse

description: Verfahren reduzierter Bodenbearbeitung können den Einsatz von Betriebsmitteln und Maschinen reduzieren und somit zu Kostensenkungen bei landwirtschaftlichen Produktionsverfahren beitragen. Unsicherheiten bezüglich möglicher Ertragseinbußen können jedoch eine Ursache für die geringe Akzeptanz reduzierter Bodenbearbeitungssysteme sein. Auf der Basis von Ergebnissen aus einem Langzeitversuch wurden die Ertragseffekte und deren ökonomische Auswirkungen unter Berücksichtigung von Risikoaspekten analysiert. Da die Bodenbearbeitung auch die Mineralisierung von Pflanzennährstoffen bestimmt, wurden auch Wechselwirkungen mit der Stickstoffdüngung untersucht. Anhand der Ergebnisse aus 12 Jahren wurde festgestellt, dass eine reduzierte Bodenbearbeitung vielfach eine höhere Stickstoffdüngung nötig macht, um einen gleichen Erfolg zu erzielen. Risikoaverse Landwirte würden pflügende Bodenbearbeitung bevorzugen.
The Interrelation between Incompressible Strips and Quantized Hall Plateaus
Creators: name: Siddiki, Afif
name: Gerhardts, Rolf R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the current and charge distribution of a two dimensional electron gas under strong perpendicular magnetic fields within the linear response regime. We show within a self-consistent screening theory that incompressible strips with integer values of local Landau-level filling factor exist for finite intervals of the magnetic field strength $B$. Within an essentially local conductivity model, we find that the current density in these $B$ intervals is confined to the incompressible strips of vanishing local longitudinal resistivity. This leads to vanishing longitudinal and exactly quantized Hall resistance, and to a nice agreement of the calculated Hall potential profiles with the measured ones.
description: 6 pages, 3 figures
Relativistic corrections to the nuclear Schiff moment
Creators: name: Dmitriev, V. F.
name: Flambaum, V. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Parity and time invariance violating ($P,T$-odd) atomic electric dipole moments (EDM) are induced by interaction between atomic electrons and nuclear $P,T$-odd moments which are produced by $P,T$-odd nuclear forces. The nuclear EDM is screened by atomic electrons. The EDM of a non-relativistic atom with closed electron subshells is induced by the nuclear Schiff moment. For heavy relativistic atoms EDM is induced by the nuclear local dipole moments which differ by 10-50% from the Schiff moments calculated previously. We calculate the local dipole moments for ${^{199}{\rm Hg}}$ and ${^{205}{\rm Tl}}$ where the most accurate atomic and molecular EDM measurements have been performed.
description: 3 pages, no figures, brief report
Cataclysmic variables from the Calan-Tololo-Survey -- I. Photometric periods
Creators: name: Tappert, C.
name: Augusteijn, T.
name: Maza, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In a search for cataclysmic variables in the Calan-Tololo Survey we have detected 21 systems, 16 of them previously unknown. In this paper we present detailed time-series photometry for those six confirmed cataclysmic variables that show periodic variability in their light curves. Four of them turned out to be eclipsing systems, while the remaining two show a modulation consisting of two humps. All derived periods are below, or, in one case, just at the lower edge of the period gap.
description: 12 pages, 18 figures, figures reduced in size and quality, accepted by MNRAS
Schwarzschild-like solutions in Finsler-Randers gravity
Creators: name: Triantafyllopoulos, A.
name: Basilakos, S.
name: Kapsabelis, E.
name: Stavrinos, P. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we extend for the first time the spherically symmetric Schwarzschild and Schwarzschild-De Sitter solutions with a Finsler-Randers-type perturbation which is generated by a covector $A_γ$. This gives a locally anisotropic character to the metric and induces a deviation from the Riemannian models of gravity. A natural framework for this study is the Lorentz tangent bundle of a spacetime manifold. We apply the generalized field equations to the perturbed metric and derive the dynamics for the covector $A_γ$. Finally, we find the timelike, spacelike and null paths on the Schwarzschild-Randers spacetime, we solve the timelike ones numerically and we compare them with the classic geodesics of general relativity. The obtained solutions are new and they enrich the corresponding literature.
description: 13 pages, 2 figures, to be published in EPJC
Masses and Dualities in Extended Freedman-Townsend Models
Creators: name: Theis, Ulrich
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider some generalizations of Freedman-Townsend models of self-interacting antisymmetric tensors, involving couplings to further form fields introduced by Henneaux and Knaepen. We show how these fields can provide masses to the tensors by means of the Stueckelberg mechanism and implement the latter in four-dimensional N=1 superspace. The duality properties of the form fields are studied, and the paradoxical situation of a duality between a free and an interacting theory is encountered.
description: 5 pages; v2: minor changes, references added; v3: some clarifications, published version; v4: generalized decoupling conditions
"It Is Never too late": Optimal Penalty for Investment Delay in Public Procurement Contracts
Creators: name: D'Alpaos, Chiara
name: Moretto, Michele
name: Valbonesi, Paola
name: Vergalli, Sergio
name: D'Alpaos, Chiara
name: Moretto, Michele
name: Valbonesi, Paola
name: Vergalli, Sergio
Publisher: name: Unknown
Year: 2009
Subjects: subject: Financial Economics
subject: Public Procurement Contracts
subject: Penalty Fee
subject: Investment Timing Flexibility
subject: Contract Incompleteness
subject: Enforceability of Rules

description: We provide a general framework in which to determine the optimal penalty fee inducing the contractor to respect the contracted delivery date in public procurement contracts (PPCs). We do this by developing a real option model that enables us to investigate the contractor’s value of investment timing flexibility which the penalty rule - de facto - introduces. We then apply this setting in order to evaluate the range of penalty fees in the Italian legislation on PPCs. According to our calibration analysis, there is no evidence that the substantial delays recorded in the execution times of Italian PPCs are due to incorrectly set penalty fees. This result opens the way for other explanations of delays in Italian PPCs: specifically, we extend our model to investigate the probability of enforcing a penalty which we assume negatively affected by the "quality" of the judicial system and the discretionality of the court in voiding the rule. Our simulations show that the penalty fee is highly sensitive to the "quality" of the judicial system. Specifically referring to the Italian case, we show that the optimal penalty should be higher than those set according to the present Italian law.
“Mitigation, Adaptation, Suffering”: In Search of the Right Mix in the Face of Climate Change
Creators: name: Tulkens, Henry
name: Van Steenberghe, Vincent
name: Tulkens, Henry
name: Van Steenberghe, Vincent
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Climate Change
subject: Mitigation
subject: Adaptation
subject: Suffering

description: The usually assumed two categories of costs involved in climate change policy analysis, namely abatement and damage costs, hide the presence of a third category, namely adaptation costs. This dodges the determination of an appropriate level for them. Including adaptation costs explicitly in the total environmental cost function allows one to characterize the optimal (cost minimizing) balance between the three categories, in statics as well as in dynamics. Implications are derived for cost benefit analysis of adaptation expenditures.
Microscopic analysis of T=1 and T=0 proton-neutron correlations in $N=Z$ nuclei
Creators: name: Hasegawa, M.
name: Kaneko, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The competition between the isovector (T=1) and isoscalar (T=0) proton-neutron ($p-n$) correlations in $N=Z$ nuclei is investigated by calculating their correlation energies with a realistic effective interaction which reproduces observed nuclear properties very well, in a strict shell model treatment. It is shown in the realistic shell model that the double-differences of binding energies $(B(A+pn:T) + B(A) - B(A+p) - B(A+n))$ ($B(A)$ being the binding energy) are good indicators of the T=1 and T=0 $p-n$ correlations. Each of them, however, originates in plural kinds of correlations with T=1 or T=0.
description: 9pages, 3figures, accepted for publication in Nuclear Pyhsics A
Additional file 1 of HealtheDataLab – a cloud computing solution for data science and advanced analytics in healthcare with application to predicting multi-center pediatric readmissions
Creators: name: Ehwerhemuepha, Louis
name: Gasperino, Gary
name: Bischoff, Nathaniel
name: Sharief Taraman
name: Chang, Anthony
name: Feaster, William
Publisher: name: figshare
Year: 2020
Subjects: subject: Computer Software
subject: FOS: Computer and information sciences
subject: Information Systems

description: Additional file 1. Amazon Web Services Cloud Resources Used.
Gravitational-wave detectors as particle-physics laboratories: Constraining scalar interactions with a coherent inspiral model of boson-star binaries
Creators: name: Pacilio, Costantino
name: Vaglio, Massimo
name: Maselli, Andrea
name: Pani, Paolo
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Gravitational-wave (GW) detections of binary neutron star coalescences play a crucial role to constrain the microscopic interaction of matter at ultrahigh density. Similarly, if boson stars exist in the universe their coalescence can be used to constrain the fundamental coupling constants of a scalar field theory. We develop the first coherent waveform model for the inspiral of boson stars with quartic interactions. The waveform includes coherently spin-induced quadrupolar and tidal-deformability contributions in terms of the masses and spins of the binary and of a single coupling constant of the theory. We show that future instruments such as the Einstein Telescope and the Laser Interferometer Space Antenna can provide strong complementary bounds on bosonic self-interactions, while the constraining power of current detectors is marginal.
description: 13 pages, 8 figures; v3: fig.s 2-3 and tab.s 1-2 changed, results unchanged
Twistor Transform in d Dimensions and a Unifying Role for Twistors
Creators: name: Bars, Itzhak
name: Picon, Moises
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Twistors in four dimensions d=4 have provided a convenient description of massless particles with any spin, and this led to remarkable computational techniques in Yang-Mills field theory. Recently it was shown that the same d=4 twistor provides also a unified description of an assortment of other particle dynamical systems, including special examples of massless or massive particles, relativistic or non-relativistic, interacting or non-interacting, in flat space or curved spaces. In this paper, using 2T-physics as the primary theory, we derive the general twistor transform in d-dimensions that applies to all cases, and show that these more general twistor transforms provide d dimensional holographic images of an underlying phase space in flat spacetime in d+2 dimensions. Certain parameters, such as mass, parameters of spacetime metric, and some coupling constants appear as moduli in the holographic image while projecting from d+2 dimensions to (d-1)+1 dimensions or to twistors. We also extend the concept of twistors to include the phase space of D-branes, and give the corresponding twistor transform. The unifying role for the same twistor that describes an assortment of dynamical systems persists in general including D-branes. Except for a few special cases in low dimensions that exist in the literature, our twistors are new.
description: LaTeX, 32 pages, v4,v5 minor sign corrections and additional references
On-line visual tracking with feature-based adaptive models
Creators: name: Li, Long
Publisher: name: University of British Columbia
Year: 2009

description: This thesis proposes a robust on-line tracking method by 1) enlarging the convergence range and 2) improving the observation memory of a phase-based appearance-adaptive "Wandering Stable Lost" (WSL) tracker, which was developed by Jepson, Fleet and El-Maraghi. The resultant tracker is demonstrated to be adaptive to temporary and permanent appearance changes in the object being tracked while at the same time it can deal with large scale and orientation changes of the object. Unlike the original phase-based WSL tracker, the new tracker can handle both partial and total occlusions when the object being tracked is temporarily unobservable. A set of "Scale Invariant Feature Transform" (SIFT) feature keypoints, which were developed by Lowe, are extracted from the object region to aid the original phase-based WSL tracker with longer past observations. The feature keypoints extracted from object region are matched against newly found keypoints in video sequences and then are passed into a Hough transform to filter out outlier mismatched pairs. The importance measures of those feature keypoints are learned using an on-line EM algorithm, which helps the tracker identify unreliable feature keypoints and concentrate computational resources on reliable ones. A deterministic gradient-based iterative tracking method is developed to use both the matched keypoints and the phase features to locate the object being tracked.
Additional file 1 of Cross-cultural adaptation and validation of the Arabic version of the functional index for hand osteoarthritis
Creators: name: Taik, Fatima Zahrae
name: Tahiri, Latifa
name: Rkain, Hanan
name: Aachari, Ilham
name: Maheu, Emmanuel
name: Fadoua Allali
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Additional file 1. The original English version of FIHOA.
A Search Model for Joint Implementation
Creators: name: Bella, Giovanni
name: Bella, Giovanni
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Environmental economics
subject: Search theory
subject: Market failures

description: The aim of this paper is to present a search model in the field of environmental economics, where so-called clean and dirty producers enter the trading market, both looking for a partner with whom to exchange the goods they are endowed with. The model derived in this paper is rather simple. Nevertheless, it is able to produce a series of interesting results and useful insights, and is conveniently used here as a framework to explain the functioning of Joint Implementation programmes for polluting emissions’ reduction.
Single-Material Graphene Thermocouples
Creators: name: Harzheim, Achim
name: Könemann, Fabian
name: Gotsmann, Bernd
name: van der Zant, Herre
name: Gehring, Pascal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: On-chip temperature sensing on a micro- to nanometer scale is becoming more desirable as the complexity of nanodevices and size requirements increase and with it the challenges in thermal probing and management. This highlights the need for scalable and reliable temperature sensors which have the potential to be incorporated into current and future device structures. Here, we show that U-shaped graphene stripes consisting of one wide and one narrow leg form a single material thermocouple that can function as a self-powering temperature sensor. We find that the graphene thermocouples increase in sensitivity with a decrease in leg width, due to a change in the Seebeck coefficient, which is in agreement with our previous findings and report a maximum sensitivity of $ΔS \approx$ 39 $\mathrmμ$V/K.
description: 7 pages, 4 figures
Coherent electronic transport in a multimode quantum channel with Gaussian-type scatterers
Creators: name: Bardarson, Jens Hjorleifur
name: Magnusdottir, Ingibjorg
name: Gudmundsdottir, Gudny
name: Tang, Chi-Shung
name: Manolescu, Andrei
name: Gudmundsson, Vidar
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Coherent electron transport through a quantum channel in the presence of a general extended scattering potential is investigated using a T-matrix Lippmann-Schwinger approach. The formalism is applied to a quantum wire with Gaussian type scattering potentials, which can be used to model a single impurity, a quantum dot or more complicated structures in the wire. The well known dips in the conductance in the presence of attractive impurities is reproduced. A resonant transmission peak in the conductance is seen as the energy of the incident electron coincides with an energy level in the quantum dot. The conductance through a quantum wire in the presence of an asymmetric potential are also shown. In the case of a narrow potential parallel to the wire we find that two dips appear in the same subband which we ascribe to two quasi bound states originating from the next evanescent mode.
description: RevTeX with 14 postscript figures included
Additional file 1 of Efficacy and safety of Zihua Wenfei granules in treatment of postinfectious cough (wind-cold invading lungs syndrome): study protocol for a randomized controlled trial
Creators: name: Huanan Wang
name: She, Bin
name: Mao, Bing
name: Jiang, Hongli
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 1. Traditional Chinese medicine symptoms grading criteria
Multilateral Trade Measures in a Post-2012 Climate Change Regime?: What Can Be Taken from the Montreal Protocol and the WTO?
Creators: name: Zhang, ZhongXiang
name: Zhang, ZhongXiang
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Post-2012 climate negotiations
subject: Trade-related measures
subject: Lieberman-Warner bill
subject: WTO
subject: Montreal Protocol
subject: Developing countries
subject: United States

description: The climate-trade nexus gains increasing attention as governments are taking great efforts to forge a post-2012 climate change regime to succeed the Kyoto Protocol. This raises the issues of the scope of trade-related measures and of when and how they could be used. This paper discusses how far trade-related measures should be incorporated in that context. Drawing on an analogy to the Montreal Protocol and comparing developing country’s climate mitigation and adaptation needs with the funding available, the paper argues that such measures should initially be applied only among Annex I or II countries. To discipline the use of unilateral trade measures at the international level, the paper emphasizes a need to define comparable climate efforts. Moreover, the Lieberman-Warner bill in the U.S. Senate - taken as a proxy for future U.S. climate legislation - is assessed, and found to be neither effective nor likely to be WTO-consistent. The paper is concluded by arguing that, in order to encourage developing countries to do more to combat climate change, developed countries should focus on carrots. Sticks can be incorporated, but only if they are credible and realistic and serve as a useful supplement to push developing countries to take actions or adopt policies and measures earlier than would otherwise have been the case.
Heteroptera
Creators: name: Heyden, Torsten van der
name: Petrovan, Silviu
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Heteroptera

description: VAN DER HEYDEN (2023) published the first part of a series of new records of
Heteroptera
from the Canary Islands. In this note, more new records from the archipelago are reported. The known distribution of the species mentioned in this note was checked by using various checklists (AUKEMA et al., 2006, 2013; RIEGER, 2020; ROCA-CUSACHS et al., 2020). Furthermore, the online databases Banco de Datos de Biodiversidad de Canarias (GOBIERNO DE CANARIAS, 2023) and Catalogue of Palaearctic Heteroptera (AUKEMA, 2023) were consulted. All new records reported in this note are based on photographic records uploaded to the online database iNaturalist.
description: Published as part of Heyden, Torsten van der & Petrovan, Silviu, 2023, New records of Heteroptera from the Canary Islands (Spain), II, pp. 109-111 in Arquivos Entomolóxicos 26 on page 109, DOI: 10.5281/zenodo.12812254
Fragmentation, NRQCD and NNLO Factorization Analysis in Heavy Quarkonium Production
Creators: name: Nayak, Gouranga C.
name: Qiu, Jian-Wei
name: Sterman, George
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss heavy quarkonium production through parton fragmentation, including a review of arguments for the factorization of high-p_T particles into fragmentation functions for hadronic initial states. We investigate the further factorization of fragmentation functions in the NRQCD formalism, and argue that this requires a modification of NRQCD octet production matrix elements to include nonabelian phases, which makes them gauge invariant. We describe the calculation of uncanceled infrared divergences in fragmentation functions that must be factorized at NNLO, and verify that they are absorbed into the new, gauge invariant matrix elements.
description: 53 pages latex, 37 eps files, version to appear in Phys. Rev. D