cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The $D_s^+ \to a_0(980) e^+ ν_e$ reaction and the $a_0(980)-f_0(980)$ mixing
Creators: name: Lin, Jia-Xin
name: Li, Jia-Ting
name: Jiang, Sheng-Juan
name: Liang, Wei-Hong
name: Oset, E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a study of the $D_s^+ \to a_0(980)(f_0(980)) e^+ ν_e$ reactions investigating the different sources of isospin violation which make the production of the $a_0(980)$ possible. We find that loops involving kaons in the production mechanism provide a source of isospin violation since they do not cancel due to the different mass of charged and neutral kaons, but we also find that the main source comes from the breaking of isospin in the meson-meson transition $T$ matrices, which contain information on the nature of the low lying scalar mesons. The reaction is thus very sensitive to the nature of the $a_0(980)$ and $f_0(980)$ resonances. Our results are consistent with the present upper bound for $a_0(980)$ production and only a factor three smaller, indicating that future runs with more statistics should find actual numbers for this reaction from where we can learn more about the origin of the scalar resonances and their nature.
description: 17 pages, 4 figures, 3 tables; v2: discussion added, references added, version to appear in Eur.Phys.J.C
Binary Maps for Image Separation in Iterative Neuronal Network Applications
Creators: name: Lehmann, Roman
name: Arnaudov, Stanislav
name: Hoffmann, Markus
name: Karl, Wolfgang
Publisher: name: KIT Scientific Publishing
Year: 2020
Subjects: U-net
binary maps
generator
flow simulation

description: Generating a series of images is an important task invarious fields of scientific research, e. g. Computational fluiddynamics (CFD). In the past years, solutions based on deepneural networks gained importance. In these tasks, it’s oftennecessary to declare regions of interest in the image. Further-more, the NN should only perform on these regions and therest should be ignored. With this paper, we propose an inno-vative and easy method for implementing this behavior in thefield of CFD.
Вестник Российского нового университета серия «Человек и общество»,Выпуск 1 2021
Creators: name: Автономная некоммерческая организация высшего образования «Российский новый университет»
Publisher: name: Автономная некоммерческая организация высшего образования «Российский новый университет»
Year: 2021

description: Вестник Российского нового университета серия «Человек и общество»,Выпуск 1 2021
Transversity Asymmetries
Creators: name: Boer, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Ways to access transversity through asymmetry measurements are reviewed. The recent first extraction and possible near future extractions are discussed.
description: 18 pages, 5 postscript figures; Opening talk of the Second International Workshop on Transverse Polarisation Phenomena in Hard Processes (Transversity 2008), Ferrara, Italy, May 28-31, 2008
Supplementary Information from Coevolution of female fidelity and male help in populations with alternative reproductive tactics
Creators: name: Li, Xiang-Yi
name: Morozov, Andrew
name: Goymann, Wolfgang
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60801 Animal Behaviour
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: The file contains additional results that are not included in the main text.
"Slow Light" and "Slow Current"
Creators: name: Zapasskii, V. S.
name: Kozlov, G. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It is shown that the effect of hole-burning under conditions of coherent population oscillations as well as the light pulse delay in a saturable absorber (a modification of the "slow light" effect) can be interpreted, in a comprehensive way, in terms of {\it intensity spectrum} of the light and {\it intensity-related susceptibility} of the non-linear medium. The physical content of these effects is illustrated by a simple electric circuit with a non-linear resistor which realizes a full analog of the saturable absorber. In this case the effect of hole-burning in the absorption spectrum of the medium is converted in to the effect of hole-burning in the frequency dependence of resistance of the non-linear resistor and the effect of "slow light" -- in to the effect of "slow current".
description: To be published in Optics and Spectroscopy (january issue, 2008)
Individual crop loads provide local control for collective food intake in ant colonies
Creators: name: Greenwald, Efrat
name: Baltiansky, Lior
name: Feinerman, Ofer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Nutritional regulation by ants emerges from a distributed process: food is collected by a small fraction of workers, stored within the crops of individuals, and spreads via local ant-to-ant interactions. The precise individual level underpinnings of this collective regulation have remained unclear mainly due to difficulties in measuring food within ants crops. Here we image fluorescent liquid food in individually tagged Camponotus sanctus ants, and track the real-time food flow from foragers to their gradually satiating colonies. We show how the feedback between colony satiation level and food inflow is mediated by individual crop loads; specifically, the crop loads of recipient ants control food flow rates, while those of foragers regulate the frequency of foraging trips. Interestingly, these effects do not rise from pure physical limitations of crop capacity. Our findings suggest that the emergence of food intake regulation does not require individual foragers to assess the global state of the colony.
Electronic Impurity Scattering Induced Spin Accumulation in Metallic Thin Films
Creators: name: Wu, Ming-Hung
name: Fabian, Alexander
name: Gradhand, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In order to explore the spin accumulation, evaluating the spin galvanic and spin Hall effect, we utilize the semi-classical Boltzmann equation based on input from the relativistic Korringa-Kohn-Rostoker Green's function method, within the density functional theory. We calculate the spin accumulation including multiple contributions, especially skew-scattering (scattering-in term) and compare this to three different approximations, which include the isotropic and anisotropic relaxation time approximation. For heavy metals, with strong intrinsic spin-orbit coupling, we find that almost all the effects are captured within the anisotropic relaxation time approximation. On the other hand, in light metals the contributions from the vertex corrections (scattering-in term) are comparable to the induced effect in anisotropic relaxation time approximation. We put a particular focus on the influence of the atomic character of the substitutional impurities on the spin accumulation as well as the dependence on the impurity position. As impurities will break space inversion symmetry of the thin film, this will give rise to both symmetric and antisymmetric contributions to the spin accumulation. In general, we find the impurities at the surface generate the largest efficiency of charge-to-spin conversion in case of the spin accumulation. Comparing our results to existing experimental findings for Pt we find a good agreement.
Conflict and compromise : a case study of the decision-making process in the Downtown Eastside
Creators: name: Huzel, Suzanne Zenovia
Publisher: name: University of British Columbia
Year: 2010

description: Community planners frequently find themselves dealing with conflicts that arise as a result of divergence of goals or values among the participants in a neighbourhood decision-making group. Yet there is a paucity of theoretical literature in the planning field that examines the dynamic of the community planning process and gives direction to the practicing planner. This thesis suggests a framework of salient elements for structuring the community decision-making process that may assist the planner in overcoming group conflict and in promoting agreement. A case study approach involving participant observation, is used to analyse a controversial neighbourhood planning process in Vancouver's Downtown Eastside/Oppenheimer area. Theoretical literature concerned with citizen participation, community decision-making, conflict resolution, role of the planner, and bargaining strategies is reviewed for relevant constructs applicable to the analysis of the case study. Constructs judged to be useful are divided into structural elements that describe physical and organizational aspects of the decision-making process, and process elements that describe the behavioural, attitudinal and psychological aspects. Conclusions drawn suggest that the leadership role of the planner is an essential ingredient in overcoming conflict and encouraging a successful group decision outcome. The planner can exercise leadership by securing authorization for the group, by setting a strict deadline for agreement and by mediating disputes. Furthermore,the use of timely conflict resolution strategies will enable the planner to promote agreement by encouraging a climate of trust and cooperation in the group. These conclusions suggest some improvements to community planning practice and a contribution to community planning theory.
CT-SGAN: Computed Tomography Synthesis GAN
Creators: name: Pesaranghader, Ahmad
name: Wang, Yiping
name: Havaei, Mohammad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Diversity in data is critical for the successful training of deep learning models. Leveraged by a recurrent generative adversarial network, we propose the CT-SGAN model that generates large-scale 3D synthetic CT-scan volumes ($\geq 224\times224\times224$) when trained on a small dataset of chest CT-scans. CT-SGAN offers an attractive solution to two major challenges facing machine learning in medical imaging: a small number of given i.i.d. training data, and the restrictions around the sharing of patient data preventing to rapidly obtain larger and more diverse datasets. We evaluate the fidelity of the generated images qualitatively and quantitatively using various metrics including Fréchet Inception Distance and Inception Score. We further show that CT-SGAN can significantly improve lung nodule detection accuracy by pre-training a classifier on a vast amount of synthetic data.
description: In Proceedings of MICCAI Deep Generative Models workshop, October 2021
Properties of $Q\bar{Q}$ $(Q εb, c)$ mesons in Coulomb plus Power potential
Creators: name: Patel, Bhavin
name: Vinodkumar, P. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The decay rates and spectroscopy of the $Q \bar Q$ $(Q \in c, b)$ mesons are computed in non-relativistic phenomenological quark antiquark potential of the type $V(r)=-\frac{α_c}{r}+A r^ν$, (CPP$_ν$) with different choices $ν$. Numerical solution of the schrodinger equation has been used to obtain the spectroscopy of $Q\bar{Q}$ mesons. The spin hyperfine, spin-orbit and tensor components of the one gluon exchange interaction are employed to compute the spectroscopy of the few lower $S$ and orbital excited states. The numerically obtained radial solutions are employed to obtain the decay constant, di-gamma and di-leptonic decay widths. The decay widths are determined with and without radiative corrections. Present results are compared with other potential model predictions as well as with the known experimental values.
description: 22 Pages, 1 Figure
HURRA! Human readable router anomaly detection
Creators: name: Navarro, Jose M.
name: Rossi, Dario
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.3

description: This paper presents HURRA, a system that aims to reduce the time spent by human operators in the process of network troubleshooting. To do so, it comprises two modules that are plugged after any anomaly detection algorithm: (i) a first attention mechanism, that ranks the present features in terms of their relation with the anomaly and (ii) a second module able to incorporates previous expert knowledge seamlessly, without any need of human interaction nor decisions. We show the efficacy of these simple processes on a collection of real router datasets obtained from tens of ISPs which exhibit a rich variety of anomalies and very heterogeneous set of KPIs, on which we gather manually annotated ground truth by the operator solving the troubleshooting ticket. Our experimental evaluation shows that (i) the proposed system is effective in achieving high levels of agreement with the expert, that (ii) even a simple statistical approach is able to extracting useful information from expert knowledge gained in past cases to further improve performance and finally that (iii) the main difficulty in live deployment concerns the automated selection of the anomaly detection algorithm and the tuning of its hyper-parameters.
Opening angle and dineutron correlations in knockout reactions with Borromean two-neutron halo nuclei
Creators: name: Casal, J.
name: Gómez-Ramos, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Background. Knockout reactions with proton targets provide an invaluable tool to access the properties of two-neutron halo nuclei. Recently, experimental results for the average opening angle as a function of the intrinsic neutron momentum in 11Li have shown a localization of dineutron correlations on the nucleus surface. Purpose. Study the model dependence and the effect of distortion and absorption on the opening angle distributions to assess the reliability of this observable to extract properties of Borromean two-neutron halo nuclei. Method. A quasifree sudden model is used to describe the knockout process, where absorption effects are modeled by the eikonal S-matrix between the proton target and the core of the Borromean nucleus. Final states in momentum space are built within a three-body model for the projectile, which enables the description of momenta and opening angle distributions. Results. A strong dependence on absorption effects is found for the opening angle at large intrinsic momenta, while the region of lower momenta is mostly insensitive to them. Reasonable agreement with the available data is obtained for 11Li at low momenta with weights for s and p waves different from those previously reported, showing a model dependence in their extraction. For 19B, test calculations show marked sensitivity to small p-wave components. Conclusions. The opening angle for (p,pn) knockout reactions on Borromean nuclei at small intrinsic momenta is a reliable observable mostly sensitive to the structure of the Borromean nucleus. For larger momenta, the reaction mechanism leads to a larger distortion of the distribution. In the case of nuclei with small components of opposite parity to the dominant ones, this observable can be used to explore them. The relation between dineutron in coordinate space and opening angle in momentum space is found to be model-dependent.
description: 14 pages, 14 figures
An evaluation of pollution control mechanisms in the Paraiba do Sul River basin, Brazil
Creators: name: Codato, Eleoterio
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this thesis is to evaluate the existing and alternative mechanisms for water pollution control in the Paraiba do Sul River Basin, in Brazil. It focuses on mechanisms-for controlling point-sources of pollution. The physical features, economy, and institutions of the Paraiba River Basin are described and the water quality problems and technical opportunities for their solution are examined. The analysis is based upon reports done by the state pollution control agency (CETESB) and field investigations which involved interviews with CETESB's personnel at the central office, in Sao Paulo, and the regional office, in Taubate. The analysis of the water quality problems and technical opportunities for their solution indicates that treatment of municipal discharges is of paramount importance for the realization of the water quality standards in the Paraiba River and that this can be done, at minimum cost, by adopting facultative lagoons for sewage treatment. It also indicates that such a solution would cause dissolved oxygen levels to rise well above the standard in most sections of the river. This means that additional assimilative capacity for biochemical oxygen demand (BOD) would be created which could possibly be allocated to other dischargers. Such a solution to the municipal sewage problem would, however, impose a heavy burden upon municipalities and is not likely to come about unless municipalities are helped financially. The ability of the mechanism to provide municipalities with some financial assistance and to allocate the assimilative capacity of the river both efficiently and equitably were the two criteria applied in assessing the existing system for pollution control in the Paraiba River. Basin, the effluent charge system, and the transferable discharge permits (TDP) system. This assessment indicates that only a modified TDP system is likely to bring about the realization of the water quality standards established for the Paraiba River. An illustrative example of the application of the TDP system to a section of the Paraiba River is developed which suggests that such a system would be able to adapt to changes in wasteloads discharged to the river and would have the potential for reducing the financial burden upon municipalities if allocations of permits to municipalities are greater than discharge requirements with facultative lagoons.
Strumigenys godeffroyi Mayr, 1866, n. sp.
Creators: name: Mayr, G.
Publisher: name: Zenodo
Year: 1866
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Strumigenys
Strumigenys godeffroyi

description: S. Godeffroyi n. sp.
Operaria: Long. 2 mm. Ferruginea, pilosula, antennis, tibiis tarsisque flavescentibus; mandibulae nitidae, laeves, sparse pilosae (haud setulosae), tenues, subcylindricae, parallelae, apice incurvata dentibus tribus, quorum aulicus minimus et posticus longissimus; clypeus antrorsum non productus; caput profundum et thorax magis tenuiter reticulato - punctata, opaca; thorax sine carinula longitudinali et inter mesonotum atque metanotum sine incisum transversa; metanotum spinis duabus longis tenuibus acutis; petioli nodus anticus opacus et reticulatopunctatus, nodus posticus disco nitido, laevi; abdomen laeve atque nitidum, basi. carinulis numerosis longitudinalibus abbreviatis: pedes pilis uumerosis longis, albicantibus et vir abstantibus.
Von Upolu, einer der Schiffer-Inseln; im Museum Godffroye in Hamburg.
Die Sculptur des zweiten Stielchenknotens konnte ich nicht genau angeben, da bei beiden von mir untersuchten Exemplaren derselbe jederseits mit Gummi verklebt ist und das Reinigen bei so zarten Objecten nicht ohne Verletzung sicher auszufuehren war.
Im Journ. Proc. Linn. Soc. VIII. 1860, pag. 76, hat Herr Smith unter dem Namen Cephaloxys capitata eine Ameise beschrieben und abgebildet, welche vollkommen mit Strumigenys uebereinstimmt. Es ist diess um so unbegreiflicher, da Herr Smith letztere Gattung fuenf Jahre frueher selbst aufgestellt hat und jetzt bei Cephaloxys derselben gar keine Erwaehnung macht, sie sogar mit Ceratobasis vergleicht und als Hauptunterschied die sechsgliedrigen Fuehler anfuehrt. Da nun die Beschreibung so wie auch die Abbildung vollkommen mit Strumigenys uebereinstimmen, so ist kein Zweifel, dass kein generischer Unterschied existirt, so dass Cephaloxys als ein Synonym zu Strumigenys zu stellen ist, obschon die Art als neu zu betrachten ist.
description: Published as part of Mayr, G., 1866, Myrmecologische Beitraege., pp. 484-517 in Sitzungsberichte der Koenigliche Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Classe 53 on pages 33-34
Strumigenys hexamera
Creators: name: Tang, Kit Lam
name: Guénard, Benoit
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Strumigenys
Strumigenys hexamera

description: Strumigenys hexamera (Brown, 1958)
Fig. 21D–F; Table 2
Epitritus hexamerus Brown, 1958: 70, figs 1–3 (w.q.) JAPAN. Palearctic.
Pyramica hexamerus – Bolton 1999: 1672.
Strumigenys hexamera – Baroni Urbani & De Andrade 2007: 122.
Material examined
MAINLAND CHINA – Hainan Province • 1 worker; Bawangling, BWLP12; 19.093236° N, 109.200057° E; 4 Jul. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 1 worker; Bawangling, BWLR7; 19.194981° N, 109.020097° E; 15 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 2 workers; Bawangling, BWLS10; 19.118784° N, 109.155618° E; 9 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 1 worker; Bawangling, BWLS12; 19.117962° N, 109.130545° E; 10 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 1 worker; Bawangling, BWLS9; 19.089728° N, 109.191270° E; 9 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 6 workers; Huoshankou, HSK3; 5 Jul. 2015; L. Wang leg.; Winkler, 4 corners; IBBL • 3 workers; Jianfengling, JFLFW1; 19.117° N, 109.152° E; 24 Dec. 2015; L. Wang leg.; Winkler, 4 corners; IBBL • 1 worker; Yinggeling, YGLK10; 19.078737° N, 109.503146° E; 2 Aug. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 1 worker; Yinggeling, YGLK11; 19.078017° N, 109.504241° E; 2 Aug. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 1 worker; same collection data as for preceding; Winkler, 4 corners; IBBL.
Measurements
Workers
TL 2.1–2.4, HL 0.48–0.54, HW 0.49–0.55, MandL 0.18–0.21, SL 0.21–0.24, EL 0.031 –0.038, PW 0.27– 0.30, ML 0.56–0.62, PL 0.22–0.27, PH 0.11–0.13, DPW 0.15–0.17, PPL 0.15–0.18, GL 0.51–0.61, CI 101–104, MI 37–40, SI 42–44, OI 6–8, LPI 45–49, DPI 62–68 (n=4).
Geographic range
Native: Japan (mainland and Ryukyu Islands), South Korea, Taiwan.
Introduced: mainland China (Hainan, Hong Kong), Ogasawara Islands (Japan), United States.
New record for Hainan.
Ecology
Collected in primary forest, secondary forest, urban forest and rubber plantations.
Comments
This species has been tentatively classified as introduced for its record in Hong Kong due to its tramp characteristic (Tang et al. 2019). The new record in Hainan indicates that its presence in nearby Guangdong and Guangxi provinces is likely.
description: Published as part of Tang, Kit Lam & Guénard, Benoit, 2023, Further additions to the knowledge of Strumigenys (Formicidae: Myrmicinae) within South East Asia, with the descriptions of 20 new species, pp. 1-144 in European Journal of Taxonomy 907 on pages 64-65, DOI: 10.5852/ejt.2023.907.2327, http://zenodo.org/record/10148811
The new very small angle neutron scattering spectrometer at Laboratoire Leon Brillouin
Creators: name: Desert, Sylvain
name: Thevenot, Vincent
name: Oberdisse, Julian
name: Brulet, Annie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The design and characteristics of the new very small angle neutron scattering spectrometer under construction at the Laboratoire Leon Brillouin is described. Its goal is to extend the range of scattering vectors magnitudes towards 2x10{-4} /A. The unique feature of this new spectrometer is a high resolution two dimensional image plate detector sensitive to neutrons. The wavelength selection is achieved by a double reflection supermirror monochromator and the collimator uses a novel multibeam design.
Magnetohydrodynamics of Neutrino-Cooled Accretion Tori around a Rotating Black Hole in General Relativity
Creators: name: Shibata, M.
name: Sekiguchi, Y.
name: Takahashi, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present our first numerical results of axisymmetric magnetohydrodynamic simulations for neutrino-cooled accretion tori around rotating black holes in general relativity. We consider tori of mass $\sim 0.1$--0.4$M_{\odot}$ around a black hole of mass $M=4M_{\odot}$ and spin $a=0$--$0.9M$; such systems are candidates for the central engines of gamma-ray bursts (GRBs) formed after the collapse of massive rotating stellar cores and the merger of a black hole and a neutron star. In this paper, we consider the short-term evolution of a torus for a duration of $\approx 60$ ms, focusing on short-hard GRBs. Simulations were performed with a plausible microphysical equation of state that takes into account neutronization, the nuclear statistical equilibrium of a gas of free nucleons and $α$-particles, black body radiation, and a relativistic Fermi gas (neutrinos, electrons, and positrons). Neutrino-emission processes, such as $e^{\pm}$ capture onto free nucleons, $e^{\pm}$ pair annihilation, plasmon decay, and nucleon-nucleon bremsstrahlung are taken into account as cooling processes. Magnetic braking and the magnetorotational instability in the accretion tori play a role in angular momentum redistribution, which causes turbulent motion, resultant shock heating, and mass accretion onto the black hole. The mass accretion rate is found to be $\dot M_* \sim 1$--$10 M_{\odot}$/s, and the shock heating increases the temperature to $\sim 10^{11}$ K. This results in a maximum neutrino emission rate of $L_ν=$ several $\times 10^{53}$ ergs/s and a conversion efficiency $L_ν/\dot M_* c^2$ on the order of a few percent for tori with mass $M_{\rm t} \approx 0.1$--0.4$M_{\odot}$ and for moderately high black hole spins.
description: Shibata, M., Sekiguchi, Y., Takahashi, R., Progress of Theoretical Physics, 118, 257 (2007)
Strumigenys hirsuta Tang 2019
Creators: name: Tang, Kit Lam
name: Guénard, Benoit
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Strumigenys
Strumigenys hirsuta

description: Strumigenys hirsuta Tang et al., 2019
Fig. 21G–I; Table 2
Strumigenys hirsuta Tang et al., 2019: 18, figs 6a–c, 7a–c (w.q.) CHINA (Hong Kong). Indomalaya.
Material examined
MAINLAND CHINA – Hainan Province • 2 workers; Bawangling, BWLS2; 19.091928° N, 109.183894° E; 6 Jul. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 4 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 2 workers; Bawangling, BWLS4; 19.096744° N, 109.177784° E; 30 Jun. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 1 worker; same collection data as for preceding; Winkler, 12 random; IBBL • 1 worker; Bawangling, BWLS6; 19.104226° N, 109.176078° E; 7 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 2 workers; same collection data as for preceding; Winkler, 4 corners; IBBL • 1 worker; Bawangling, BWLS8; 19.085592° N, 109.191281° E; 9 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 1 worker; Yinggeling, YGLK12; 19.084458° N, 109.504251° E; 2 Aug. 2016; L. Wang leg.; Winkler, 12 random; IBBL.
Measurements
Workers
TL 3.3–3.5, HL 0.78–0.83, HW 0.60–0.62, MandL 0.34–0.36, SL 0.38–0.42, EL 0.051 –0.078, PW 0.33– 0.35, ML 0.88–0.93, PL 0.37–0.44, PH 0.14–0.16, DPW 0.16–0.18, PPL 0.20–0.25, GL 0.69–0.79, CI 72–77, MI 42–45, SI 63–68, OI 9–13, LPI 34–40, DPI 39–42 (n=7).
Geographic range
Mainland China (Hainan, Hong Kong).
New record for Hainan.
Ecology
Collected in secondary forest.
Comments
A recently described species, with its endemic status in Hong Kong also postulated to be due to undersampling in China rather than true endemism due to its wide distribution within the territory (Tang et al. 2019). Specimens collected in Hainan were slightly bigger than those from Hong Kong, but all the measurement indices were still closer to S. hirsuta than to other species of the caniophanes - complex within the S. caniophanes -group, including the characteristic short antennal scape. It also clearly shares all other characters of the species. Its presence in nearby Guangdong and Guangxi provinces is likely.
description: Published as part of Tang, Kit Lam & Guénard, Benoit, 2023, Further additions to the knowledge of Strumigenys (Formicidae: Myrmicinae) within South East Asia, with the descriptions of 20 new species, pp. 1-144 in European Journal of Taxonomy 907 on pages 65-66, DOI: 10.5852/ejt.2023.907.2327, http://zenodo.org/record/10148811
Nonlinear unbalanced Bessel beams in the collapse of Gaussian beams arrested by nonlinear losses
Creators: name: Porras, Miguel A.
name: Parola, Alberto
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Collapse of a Gaussian beam in self-focusing Kerr media arrested by nonlinear losses may lead to the spontaneous formation of a quasi-stationary nonlinear unbalanced Bessel beam with finite energy, which can propagate without significant distortion over tens of diffraction lengths, and without peak intensity attenuation while the beam power is drastically diminishing.
description: 4 pages, 5 figures
Radio emission from exoplanets: the role of the stellar coronal density and magnetic field strength
Creators: name: Jardine, M.
name: Cameron, A. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The search for radio emission from extra-solar planets has so far been unsuccessful. Much of the effort in modelling the predicted emission has been based on the analogy with the well-known emission from Jupiter. Unlike Jupiter, however, many of the targets of these radio searches are so close to their parent stars that they may well lie inside the stellar magnetosphere. For these close-in planets we determine which physical processes dominate the radio emission and compare our results to those for large-orbit planets that are immersed in the stellar wind. We have modelled the reconnection of the stellar and planetary magnetic fields. We calculate the extent of the planetary magnetosphere if it is in pressure balance with its surroundings and determine the conditions under which reconnection of the stellar and planetary magnetic fields could provide the accelerated electrons necessary for the predicted radio emission. We show that received radio fluxes of tens of mJy are possible for exoplanets in the solar neighbourhood that are close to their parent stars if their stars have surface field strengths above 1-10G. We show that for these close-in planets, the power of the radio emission depends principally on the ratio (Nc/B^{1/3})^2 where Nc is the density at the base of the stellar corona, and B is the stellar surface magnetic field strength. Radio emission is most likely to be detected from planets around stars with high-density coronae, which are therefore likely to be bright X-ray sources. The dependence of stellar coronal density on stellar rotation rate and effective temperature is crucial in predicting radio fluxes from exoplanets.
description: 10 pages, 11 figures
High-Order Multipole and Binary Love Number Universal Relations
Creators: name: Godzieba, Daniel A.
name: Radice, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using a data set of approximately 2 million phenomenological equations of state consistent with observational constraints, we construct new equation-of-state-insensitive universal relations that exist between the multipolar tidal deformability parameters of neutron stars, $Λ_l$, for several high-order multipoles ($l = 5,6,7,8$). We confirm the existence of a universal relation between the radius of the $1.4 M_\odot$ NS, $R_{1.4}$ and the reduced tidal parameter of the binary, $\tildeΛ$, and the chirp mass. We extend this relation to a large number of chirp masses and to the radii of isolated NSs of different mass $M$, $R_M$. We find that there is an optimal value of $M$ for every $\mathcal{M}$ such that the uncertainty in the estimate of $R_M$ is minimized when using the relation. We discuss the utility and implications of these relations for the upcoming LIGO O4 run and third-generation detectors.
description: 14 pages, 6 figures, 3 tables Replacement of older version of manuscript. A few small errors were found in the previous version of the manuscript that do not affect the scientific findings of the paper. They are corrected in this version
K-theory of quiver varieties, q-Fock space and nonsymmetric Macdonald polynomials
Creators: name: Nagao, Kentaro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B37 (Primary); 33C52, 14D21, 16G20 (Secondary)

description: We have two constructions of the level-$(0,1)$ irreducible representation of the quantum toroidal algebra of type $A$. One is due to Nakajima and Varagnolo-Vasserot. They constructed the representation on the direct sum of the equivariant K-groups of the quiver varieties of type $\hat{A}$. The other is due to Saito-Takemura-Uglov and Varagnolo-Vasserot. They constructed the representation on the q-deformed Fock space introduced by Kashiwara-Miwa-Stern. In this paper we give an explicit isomorphism between these two constructions. For this purpose we construct simultaneous eigenvectors on the q-Fock space using nonsymmetric Macdonald polynomials. Then the isomorphism is given by corresponding these vectors to the torus fixed points on the quiver varieties.
description: 28 pages
Self Replication and Signalling
Creators: name: Chakrabarty, Indranil
name: Prashant
name: Choudhury, B. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is known that if one could clone an arbitrary quantum state one could send signal faster than the speed of light. However it remains interesting to see that if one can perfectly self replicate an arbitrary quantum state, does it violate the no signalling principle? Here we see that perfect self replication would also lead to superluminal signalling.
description: Modified version of quant-ph/0510221, Accepted in International Journal of Theoretical Physics
Bandwidth enhancement for parametric amplifiers operated in chirped multi-beam mode
Creators: name: Terranova, F.
name: Kiriyama, H.
name: Pegoraro, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: In this paper we discuss the bandwidth enhancement that can be achieved in multi-Joule optical parametric chirped pulse amplification (OPCPA) systems exploiting the tunability of parametric amplification. In particular, we consider a pair of single pass amplifiers based on potassium dideuterium phosphate (DKDP), pumped by the second harmonic of Nd:glass and tuned to amplify adjacent regions of the signal spectrum. We demonstrate that a bandwidth enhancement up to 50% is possible in two configurations; in the first case, one of the two amplifiers is operated near its non-collinear broadband limit; to allow for effective recombination and recompression of the outgoing signals this configuration requires filtering and phase manipulation of the spectral tail of the amplified pulses. In the second case, effective recombination can be achieved simply by spectral filtering: in this configuration, the optimization of the parameters of the amplifiers (pulse, crystal orientation and crystal length) does not follow the recipes of non-collinear OPCPA.
description: 11 pages, 5 figures. To appear in Opt.Comm
Quantum dot spectroscopy using cavity QED
Creators: name: Winger, Martin
name: Badolato, Antonio
name: Hennessy, Kevin
name: Hu, Evelyn
name: Imamoglu, Atac
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Cavity quantum electrodynamics has attracted substantial interest, both due to its potential role in the field of quantum information processing and as a testbed for basic experiments in quantum mechanics. Here, we show how cavity quantum electrodynamics using a tunable photonic crystal nanocavity in the strong coupling regime can be used for single quantum dot spectroscopy. From the distinctive avoided crossings observed in the strongly coupled system we can identify the neutral and single positively charged exciton as well as the biexciton transitions. Moreover we are able to investigate the fine structure of those transitions and to identify a novel cavity mediated mixing of bright and dark exciton states, where the hyperfine interactions with lattice nuclei presumably play a key role. These results are enabled by a deterministic coupling scheme which allowed us to achieve unprecedented coupling strengths in excess of 0.15 meV.
description: 5 pages, 3 figures
Membranes on Calibrations
Creators: name: Krishnan, Chethan
name: Maccaferri, Carlo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: M2-branes can blow up into BPS funnels that end on calibrated intersections of M5-branes. In this quick note, we make the observation that the constraints required for the consistency of these solutions are automatic in Bagger-Lambert-Gustavsson (BLG) theory, thanks to the fundamental identity and the supersymmetry of the calibration. We use this to explain how the previous ad hoc fuzzy funnel constructions emerge in this picture, and make some comments about the role of the 3-algebra trace form in the derivation.
description: 9 pages, no figures; references added, minor changes
Cohomology of $\mathfrak {osp}(1|2)$ acting on linear differential operators on the supercircle $S^{1|1}
Creators: name: Basdouri, Imed
name: Ammar, Mabrouk Ben
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 53D55

description: We compute the first cohomology spaces $H^1(\mathfrak{osp}(1|2);\mathfrak{D}_{λ,μ})$ ($λ, μ\in\mathbb{R}$) of the Lie superalgebra $\mathfrak{osp}(1|2)$ with coefficients in the superspace $\mathfrak{D}_{λ,μ}$ of linear differential operators acting on weighted densities on the supercircle $S^{1|1}$. The structure of these spaces was conjectured in \cite{gmo}. In fact, we prove here that the situation is a little bit more complicated. (To appear in LMP.)
Crossover from hc/e to hc/2e current oscillations in rings of s-wave superconductors
Creators: name: Loder, F.
name: Kampf, A. P.
name: Kopp, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze the crossover from an hc/e-periodicity of the persistent current in flux threaded clean metallic rings towards an hc/2e-flux periodicity of the supercurrent upon entering the superconducting state. On the basis of a model calculation for a one-dimensional ring we identify the underlying mechanism, which balances the hc/e versus the hc/2e periodic components of the current density. When the ring circumference exceeds the coherence length of the superconductor, the flux dependence is strictly hc/2e periodic. Further, we develop a multi-channel model which reduces the Bogoliubov - de Gennes equations to a one-dimensional differential equation for the radial component of the wave function. The discretization of this differential equation introduces transverse channels, whose number scales with the thickness of the ring. The periodicity crossover is analyzed close the critical temperature.
Noise enhancement due to quantum coherence in coupled quantum dots
Creators: name: Kiesslich, G.
name: Schoell, E.
name: Brandes, T.
name: Hohls, F.
name: Haug, R. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that the intriguing observation of noise enhancement in the charge transport through two vertically coupled quantum dots can be explained by the interplay of quantum coherence and strong Coulomb blockade. We demonstrate that this novel mechanism for super-Poissonian charge transfer is very sensitive to decoherence caused by electron-phonon scattering as inferred from the measured temperature dependence.
description: 4 pages, 3 figures, corrected version (Figs.2 and 3)
Feynman integrals and difference equations
Creators: name: Moch, S.
name: Schneider, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We report on the calculation of multi-loop Feynman integrals for single-scale problems by means of difference equations in Mellin space. The solution to these difference equations in terms of harmonic sums can be constructed algorithmically over difference fields, the so-called Pi-Sigma-fields. We test the implementaion of the Mathematica package Sigma on examples from recent higher order perturbative calculations in Quantum Chromodynamics.
description: 11 pages latex, 2 figures, Proceedings of the 11th International Workshop on Advanced Computing and Analysis Techniques in Physics Research (ACAT 07), Amsterdam, The Netherlands
Lynx D3.3 Intermediate summarisation and annotation services
Creators: name: Moreno-Schneider, Julián
name: Rehm, Georg
name: Navas-Loro, María
Publisher: name: Zenodo
Year: 2019
Subjects: annotation services, summarisation, Summ, , NER, Geo, TimEx

description: This report provides an overview of the intermediate summarisation and annotation services (developed under the Task 3.3 of WP3 in the Lynx project). This report describes several services that are divided into Annotation Services, which goal is enriching documents by annotating semantic information on them; and Summarisation Service, which aim at generating a new and shorter piece of a text from one or several texts (documents or parts of documents).

The description of the services is composed of two parts: for each of the services, first, its general approach is presented. Then, its application in the Lynx project is introduced, putting the focus on datasets used for training new models, rules defined for domain adaptability or generation of dictionaries for specific topics or scenarios.

Being an intermediate report, the described services are still under development, and will still experience changes and improvements in the following months. However, large amounts of work have been done in the interoperability aspect (data interchange format) and the conversion of the services for working in a docker microservice architecture. The fact that the services are already properly running and working in Openshift is a success.
Combining directional light output and ultralow loss in deformed microdisks
Creators: name: Wiersig, Jan
name: Hentschel, Martina
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Chaotic Dynamics (nlin.CD)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A drawback of high-quality modes in optical microdisks is their isotropic light emission characteristics. Here we report a novel, robust, and general mechanism that results in highly directional light emission from those modes. This surprising finding is explained by a combination of wave phenomena (wave localization along unstable periodic ray trajectories) and chaotic ray dynamics in open systems (escape along unstable manifolds). The emission properties originating in the chaotic ray dynamics permit directional light output even from microlasers operating in the common multi-mode regime. We demonstrate our novel mechanism for the limacon billiard family and find directional emission with narrow angular divergence for a significant range of geometries and material parameters.
description: 4 pages
Klein-Gordon and Dirac gyroscopes
Creators: name: Sadurni, Emerson
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The formulation of a rigid body in relativistic quantum mechanics is studied. Departing from an alternate approach at the relativistic classical level, the corresponding Klein-Gordon and Dirac operators for the rigid body are obtained in covariant form. The resulting wave equations are shown to be consistent, by construction, with earlier definitions of a relativistic rigid body by Aldinger et al (1983). Wave functions and spectra for both cases are obtained explicitly, including the Dirac gyroscope with asymmetries.
description: 13 pages, no figures. Accepted for publication in J Phys A: Math Theor
Data-driven deep density estimation
Creators: name: Puchert, Patrik
name: Hermosilla, Pedro
name: Ritschel, Tobias
name: Ropinski, Timo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Density estimation plays a crucial role in many data analysis tasks, as it infers a continuous probability density function (PDF) from discrete samples. Thus, it is used in tasks as diverse as analyzing population data, spatial locations in 2D sensor readings, or reconstructing scenes from 3D scans. In this paper, we introduce a learned, data-driven deep density estimation (DDE) to infer PDFs in an accurate and efficient manner, while being independent of domain dimensionality or sample size. Furthermore, we do not require access to the original PDF during estimation, neither in parametric form, nor as priors, or in the form of many samples. This is enabled by training an unstructured convolutional neural network on an infinite stream of synthetic PDFs, as unbound amounts of synthetic training data generalize better across a deck of natural PDFs than any natural finite training data will do. Thus, we hope that our publicly available DDE method will be beneficial in many areas of data analysis, where continuous models are to be estimated from discrete observations.
description: 35 pages, 25 figures. Puplished in Neural Computing and Applications (2021). The method described is available as python pip pachage deep_density_estimation and on github https://github.com/trikpachu/ DDE