cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Accuracy of analytical models of the large-scale matter distribution
Creators: name: Valageas, Patrick
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the possible accuracy that can be reached by analytical models for the matter density power spectrum and correlation function. Using a realistic description of the power spectrum that combines perturbation theory with a halo model, we study the convergence rate of several perturbative expansion schemes and the impact of nonperturbative effects, as well as the sensitivity to phenomenological halo parameters. We check that the simple reorganization of the standard perturbative expansion, with a Gaussian damping prefactor, provides a well-ordered convergence and a finite correlation function that yields a percent accuracy at the baryon acoustic oscillation peak (as soon as one goes to second order). Lagrangian-space expansions are somewhat more efficient, when truncated at low orders, but may diverge at high orders. We find that whereas the uncertainty on the halo-profile mass-concentration relation is not a strong limitation, the uncertainty on the halo mass function can severely limit the accuracy of theoretical predictions for $P(k)$ (this also applies to the power spectra measured in numerical simulations). The real-space correlation function provides a better separation between perturbative and nonperturbative effects, which are restricted to $x \lesssim 10 h^{-1}$Mpc at all redshifts.
description: 16 pages
Controlling superfluid flows using dissipative impurities
Creators: name: Will, Martin
name: Marino, Jamir
name: Ott, Herwig
name: Fleischhauer, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose and analyze a protocol to create and control the superfluid flow in a one dimensional, weakly interacting Bose gas by noisy point contacts coupled to the density of the bosons. Considering first a single contact in a static or moving condensate, we identify three different dynamical phases: I. a linear response regime, where the noise induces a coherent flow in proportion to the strength of the noise accompanied by a counterflow of the normal component of the gas, II. a Zeno regime with suppressed currents and negative differential current to noise characteristics, and III. for a non-vanishing relative velocity, a regime of continuous soliton emission. The velocity of the condensate at the dissipative impurity determines the threshold for Zeno suppression of the current through the point contact, and the onset of the non-stationary regime of soliton "shooting" from the defect. Generalizing to two point contacts in a condensate at rest we show that noise tuning can be employed to control, stabilize or eventually shunt the superfluid transport of particles along the segment which connects them, with perspectives for an atomtronic analogue of a superfluid-current source for studying quantum transport phenomena.
description: 11 pages, 6 figures
Oryzomys gorgasi Hershkovitz 1971
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oryzomys
Oryzomys gorgasi

description: Oryzomys gorgasi Hershkovitz, 1971. J. Mammal., 52:700. TYPE LOCALITY: Colombia, Antioquia Dept., basin of Rio Atrato, Loma Teguerre, just below and opposite Sautata (Choco), 1 m; 7°54'N, 77°W. DISTRIBUTION: Known only from the type locality. COMMENTS: Known only by the holotype; related to O. couesi and O. palustris (see Hershkovitz, 1971).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 722, DOI: 10.5281/zenodo.7353098
description: {"references": ["Hershkovitz, P. 1971. A new rice rat of the Oryzomys palustris group (Cricetinae, Muridae) from northwestern Colombia, with remarks on distribution. Journal of Mammalogy, 52: 700 - 709."]}
Fregata ariel
Creators: name: Le, Hung Manh
name: Ho, Thang
name: Le, Trung Nguyen Thoi
name: Nguyen, Hoa Ngoc
name: Nguyen, Thach Dang
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Suliformes
Fregatidae
Fregata
Fregata ariel

description: Fregata ariel (Gray, GR, 1845)
Fregata ariel (Gray, GR, 1845)
Materials
Type status: Other material. Occurrence: occurrenceID: 6DBE7564-D31F-5DED-91EB-77D0332C6C2B; Taxon: kingdom: Animalia; phylum: Chordata; class: Aves; order: Suliformes; family: Fregatidae; genus: Fregata; Location: country: Vietnam; stateProvince: Danang; locality: My Khe; verbatimElevation: 30 m; verbatimLatitude: 16 ° 06.353 ’ N; verbatimLongitude: 108 ° 15.513 ’ E
Conservation status
Least Concern
Distribution
Lesser Frigate-Bird is a scarce non-breeding offshore visitor species in Vietnam, with the only previous records from Cochinchina (Robson 2008, Craik and Minh 2018, Hung et al. 2021 b). This is the first confirmed record for the species in Central Annam. Elsewhere, this species has been recorded resident in Australia, Brazil, British Indian Ocean Territory, Brunei Darussalam, China, Christmas Island, Comoros, Fiji, French Polynesia, India, Indonesia, Japan, Kiribati, North Korea, Madagascar, Malaysia, Mauritius, Mayotte, New Caledonia, Philippines, Singapore, Solomon Islands, Sri Lanka, Taiwan, Tanzania, Thailand, Tonga, United States, Vanuatu, breeding in Cocos (Keeling) Islands, Maldives, Marshall Islands, Réunion, Seychelles and non-breeding in Micronesia, northern Mariana Islands, Palau, Timor-Leste, United States Minor Outlying Islands, Djibouti, Eritrea, Israel, Jordan, Kenya, Mozambique, New Zealand, Oman and Somalia (IUCN 2024).
Diagnosis
Size: 71-81 cm.: Overall blackish plumage with prominent whitish patches extending from side of body to inner underwing-coverts diagnostic. Red gular pouch.: Combination of black hood, belly and lower flanks, white remainder of underparts, extending in axillary spur on to inner underwing-coverts.: shows rufous to brownish-white head, black breast-band, triangular white belly-patch. White axillary spur always present, originating from line of breast-band and angled outwards (towards wing- tip). Band across upperwing-coverts buffish, moderately prominent (Fig. 4)
description: Published as part of Le, Hung Manh, Ho, Thang, Le, Trung Nguyen Thoi, Nguyen, Hoa Ngoc & Nguyen, Thach Dang, 2024, New records of birds from Central Vietnam, pp. e 133721 in Biodiversity Data Journal 12 on page e133721, DOI: 10.3897/BDJ.12.e133721
Platformisation of News in 10 Countries
Creators: name: Cardoso, Gustavo
name: Álvares, Cláudia
name: Moreno, José
name: Sepúlveda, Rita
name: Crespo, Miguel
name: Foà, Caterina
name: Üzelgün, Mehmet Ali
name: Santos, Sofia F.
Publisher: name: Zenodo
Year: 2023

description: Corresponding to the task 2.2 of EUMEPLAT Work Package 2, this deliverable aims to analyze the Platformization of news in the 10 countries included in the project and assess how and to what extent Europeanization is part of the debate about Europe on social media. With that aim, the team from ISCTE worked with all 10 partner universities to design and implement a methodological framework to collect, categorize and analyze the most relevant social media posts in all 10 countries in September to November 2021. This collaborative research confirms the role of social media platforms in channeling the debate about european issues, documents the struggle of news media to dispute the attention of users with other kinds of actors on those platforms and indicates that Europeanization is not a central part of the debate about Europe.
Accelerating anisotropic cosmologies in Brans-Dicke gravity coupled to a mass-varying vector field
Creators: name: Akarsu, Ozgur
name: Dereli, Tekin
name: Oflaz, Neslihan
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The field equations of Brans-Dicke gravity coupled to a mass-varying vector field are derived. Anisotropic cosmological solutions with a locally rotationally symmetric Bianchi type I metric and time-dependent scalar and electric vector fields are studied. A particular class of exact solutions for which all the variable parameters have a power-law time dependence is given. The universe expands with a constant expansion anisotropy within this class of solutions. We show that the accelerating expansion is driven by the scalar field and the electric vector field can be interpreted as an anisotropic dark matter source.
description: 15 pages, no figures and tables; matches the version published in Classical and Quantum Gravity
Oryzomys hammondi
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oryzomys
Oryzomys hammondi

description: Oryzomys hammondi (Thomas, 1913). Ann. Mag. Nat. Hist., ser. 8, 12:570. TYPE LOCALITY: Ecuador, Pichincha Prov., Mindo, 4213 ft. DISTRIBUTION: NW Ecuador. COMMENTS: Described as a species of Nectomys and included therein as incertae sedis by Hershkovitz (1944). Later designated as the type species of Macruroryzomys, subgenus Oryzomys, by Hershkovitz (1948b), who afterwards (1970b) acknowledged the taxon as a nomen nudum (also see Pine and Wetzel, 1975:653). Distributional limits poorly definded and affinities obscure, perhaps related to the extirpated Antillean form Megalomys (Ray, 1962).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 722, DOI: 10.5281/zenodo.7353098
description: {"references": ["Hershkovitz, P. 1944. Systematic review of the Neotropical water rats of the genus Nectomys (Cricetinae). Miscellaneous Publications, Museum of Zoology, University of Michigan, 58: 1 - 101.", "Hershkovitz, P. 1948 b. Mammals of northern Colombia. Preliminary report no. 3. Water rats (genus Nectomys), with supplemental notes on related forms. Proceedings of the United States National Museum, 98: 49 - 56.", "Pine, R. H., and R. M. Wetzel. 1975. A new subspecies of Pseudoryzomys wavrini (Mammalia: Rodentia: Muridae: Cricetinae) from Bolivia. Mammalia, 39: 649 - 655.", "Ray, C. E. 1962. Oryzomyine rodents of the Antillean subregion. Unpubl. Ph. D. dissertation, Harvard University, 356 pp."]}
One Hundred Years Later: Stern-Gerlach Experiment and Dimension Witnesses
Creators: name: Grossi, R.
name: Brugger, Lucas L.
name: Rizzuti, B. F.
name: Duarte, C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81-10, 81P15

description: Inspired by the one-hundredth anniversary of the seminal works of Stern and Gerlach, our contribution is a proposal of how to use their famous experiment in a more contemporary perspective. Our main idea is to re-cast the experiment in the modern language of prepare-and-measure scenarios. By doing so, it is possible to connect geometric and algebraic aspects of the space of states with the physical space. We also discuss possible simulations of the SG experiment as well as some experimental properties of the experiment revealed at the statistical level. Merging a more modern perspective with a paradigmatic experiment, we hope this paper can serve as an entry door for quantum information theory and the foundations of quantum mechanics.
description: 23 pages, 6 figures. Minor adjustments, according to referee suggestions
Unveiling shocks in planetary nebulae
Creators: name: Guerrero, M. A.
name: Toalá, J. A.
name: Medina, J. J.
name: Luridiana, V.
name: Miranda, L. F.
name: Riera, A.
name: Velázquez, P. F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The propagation of a shock wave into a medium is expected to heat the material beyond the shock, producing noticeable effects in intensity line ratios such as [O III]/Halpha. To investigate the occurrence of shocks in planetary nebulae (PNe), we have used all narrowband [O III] and Halpha images of PNe available in the HST archive to build their [O III]/Halpha ratio maps and to search for regions where this ratio is enhanced. Regions with enhanced [O III]/Halpha emission ratio can be ascribed to two different types of morphological structures: bow-shock structures produced by fast collimated outflows and thin skins enveloping expanding nebular shells. Both collimated outflows and expanding shells are therefore confirmed to generate shocks in PNe. We also find regions with depressed values of the [O III]/Halpha ratio which are found mostly around density bounded PNe, where the local contribution of [N II] emission into the F656N Halpha filter cannot be neglected.
description: 13 pages, 9 figures, 3 tables; To appear in Astronomy & Astrophysics
Emberiza pusilla Pallas 1776
Creators: name: Le, Hung Manh
name: Ho, Thang
name: Le, Trung Nguyen Thoi
name: Nguyen, Hoa Ngoc
name: Nguyen, Thach Dang
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Emberizidae
Emberiza
Emberiza pusilla

description: Emberiza pusilla Pallas, 1776
Emberiza pusilla Pallas, 1776
Materials
Type status: Other material. Occurrence: occurrenceID: E892B0E6-DD9F-5693-8E30-79A648BDF54F; Taxon: kingdom: Animalia; phylum: Chordata; class: Aves; order: Passeriformes; family: Emberizidae; genus: Emberiza; Location: country: Vietnam; stateProvince: Nghe An; locality: Con Cuong; verbatimElevation: 600 m; verbatimLatitude: 19 ° 17.024 ’ N; verbatimLongitude: 104 ° 10.492 ’ E
Conservation status
Least Concern
Distribution
Little Bunting has been recorded as a fairly common to common winter visitor in West and East Tonkin (Robson 2008, Craik and Minh 2018, Hung et al. 2021 b). This is the first confirmed record for the species in North Annam. Elsewhere, this species has been recorded breeding in Norway, Russian and Sweden, resident in Bangladesh, Bhutan, China, Finland, Hong Kong, India, Japan, Kazakhstan, Kuwait, Laos, Malaysia, Mongolia, Myanmar, North Korea, Nepal, Pakistan, Philippines, Taiwan, Thailand, non-breeding in Iran, Saudi Arabia and vagrant in Afghanistan, Austria, Belgium, Bulgaria, Cyprus, Denmark, Egypt, Estonia, Faroe Islands, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Jordan, Latvia, Malta, Netherlands, Poland, Portugal, Slovenia, Spain, Switzerland, Tajikistan, Türkiye, Ukraine, United Kingdom and United States (IUCN 2024).
Diagnosis
Size: 12-14 cm. Adult non-breeding: Small with finely dark-streaked breast and flanks and rather uniform base colour of upperside. Bold broad blackish (streaky) lateral crown-stripes, eye-stripe and border to rufous-chestnut ear-coverts. Median crown- stripes, supercillium, submoustachial stripe and spot on rear ear-coverts contrastingly buffish, shows rufescent lores and forehead, whitish eye-ring (Fig. 5). Adult breeding: Attains diagnostic chestnut flush over most of head, lateral crown-stripes solid black. Juvenile: Similar to adult non-breeding. Initially shows much duller lateral crown-stripes, less neat breast and flanks streaking, brower-tinged underparts.
description: Published as part of Le, Hung Manh, Ho, Thang, Le, Trung Nguyen Thoi, Nguyen, Hoa Ngoc & Nguyen, Thach Dang, 2024, New records of birds from Central Vietnam, pp. e 133721 in Biodiversity Data Journal 12 on page e133721, DOI: 10.3897/BDJ.12.e133721
Frequency Recognition in SSVEP-based BCI using Multiset Canonical Correlation Analysis
Creators: name: Zhang, Yu
name: Zhou, Guoxu
name: Jin, Jing
name: Wang, Xingyu
name: Cichocki, Andrzej
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Canonical correlation analysis (CCA) has been one of the most popular methods for frequency recognition in steady-state visual evoked potential (SSVEP)-based brain-computer interfaces (BCIs). Despite its efficiency, a potential problem is that using pre-constructed sine-cosine waves as the required reference signals in the CCA method often does not result in the optimal recognition accuracy due to their lack of features from the real EEG data. To address this problem, this study proposes a novel method based on multiset canonical correlation analysis (MsetCCA) to optimize the reference signals used in the CCA method for SSVEP frequency recognition. The MsetCCA method learns multiple linear transforms that implement joint spatial filtering to maximize the overall correlation among canonical variates, and hence extracts SSVEP common features from multiple sets of EEG data recorded at the same stimulus frequency. The optimized reference signals are formed by combination of the common features and completely based on training data. Experimental study with EEG data from ten healthy subjects demonstrates that the MsetCCA method improves the recognition accuracy of SSVEP frequency in comparison with the CCA method and other two competing methods (multiway CCA (MwayCCA) and phase constrained CCA (PCCA)), especially for a small number of channels and a short time window length. The superiority indicates that the proposed MsetCCA method is a new promising candidate for frequency recognition in SSVEP-based BCIs.
Oryzomys intectus Thomas 1921
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oryzomys
Oryzomys intectus

description: Oryzomys intectus Thomas, 1921. Ann. Mag. Nat. Hist., ser. 9, 8:356. TYPE LOCALITY: Colombia, Antioquia Dept., 8 km E Medellin, Santa Elena, 9000 ft. DISTRIBUTION: NC Colombia. COMMENTS: Distinctive species of uncertain affinities, variously associated with O. balneator or Melanomys (Gyldenstolpe, 1932), with Nectomys (Ellerman, 1941), or with subgenus Oryzomys (Cabrera, 1961). Such a diversity of opinion begs renewed study.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 722, DOI: 10.5281/zenodo.7353098
description: {"references": ["Gyldenstolpe, N. 1932. A manual of Neotropical sigmodont rodents. Kungliga Svenska Vetenskapsakademiens Handlingar, Tredje Serien, 11: 1 - 164.", "Ellerman, J. R. 1941. The families and genera of living rodents. Vol. II. Family Muridae. British Museum (Natural History), London, 690 pp."]}
Radar-enabled ambient backscatter communications
Creators: name: Venturino, Luca
name: Grossi, Emanuele
name: Lops, Marco
name: Johnston, Jeremy
name: Wang, Xiaodong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this work, we exploit the radar clutter (i.e., the ensemble of echoes generated by the terrain and/or the surrounding objects in response to the signal emitted by a radar transmitter) as a carrier signal to enable an ambient backscatter communication from a source (tag) to a destination (reader). The proposed idea relies on the fact that, since the radar excitation is periodic, the radar clutter is itself periodic over time scales shorter than the coherence time of the environment. Upon deriving a convenient signal model, we propose two encoding/decoding schemes that do not require any coordination with the radar transmitter or knowledge of the radar waveform. Different tradeoffs in terms of transmission rate and error probability can be obtained upon changing the control signal driving the tag switch or the adopted encoding rule; also, multiple tags can be accommodated with either a sourced or an unsourced multiple access strategy. Some illustrative examples are provided.
description: Accepted for pubblications in the IEEE Transactions on Wireless Communications
A Data-Driven Statistical-Stochastic Surrogate Modeling Strategy for Complex Nonlinear Non-stationary Dynamics
Creators: name: Qi, Di
name: Harlim, John
Publisher: name: arXiv
Year: 2022
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We propose a statistical-stochastic surrogate modeling approach to predict the response of the mean and variance statistics under various initial conditions and external forcing perturbations. The proposed modeling framework extends the purely statistical modeling approach that is practically limited to the homogeneous statistical regime for high-dimensional state variables. The new closure system allows one to overcome several practical issues that emerge in the non-homogeneous statistical regimes. First, the proposed ensemble modeling that couples the mean statistics and stochastic fluctuations naturally produces positive-definite covariance matrix estimation, which is a challenging issue that hampers the purely statistical modeling approaches. Second, the proposed closure model, which embeds a non-Markovian neural-network model for the unresolved fluxes such that the variance of the dynamics is consistent, overcomes the inherent instability of the stochastic fluctuation dynamics. Effectively, the proposed framework extends the classical stochastic parametric modeling paradigm for the unresolved dynamics to a semi-parametric parameterization with a residual Long-Short-Term-Memory neural network architecture. Third, based on empirical information metric, we provide an efficient and effective training procedure by fitting a loss function that measures the differences between response statistics. Supporting numerical examples are provided with the Lorenz-96 model, a system of ODEs that admits the characteristic of chaotic dynamics with both homogeneous and inhomogeneous statistical regimes. In the latter case, we will see the effectiveness of the statistical prediction even though the resolved Fourier modes corresponding to the leading mean energy and variance spectra do not coincide.
description: 11 figures
Stationary states of fermions in a sign potential with a mixed vector-scalar coupling
Creators: name: Castilho, W. M.
name: de Castro, A. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The scattering of a fermion in the background of a sign potential is considered with a general mixing of vector and scalar Lorentz structures with the scalar coupling stronger than or equal to the vector coupling under the Sturm-Liouville perspective. When the vector coupling and the scalar coupling have different magnitudes, an isolated solution shows that the fermion under a strong potential can be trapped in a highly localized region without manifestation of Klein's paradox. It is also shown that the lonely bound-state solution disappears asymptotically as one approaches the conditions for the realization of spin and pseudospin symmetries.
description: 4 figures
Next-to-leading order QCD corrections to $W^+W^+$ and $W^-W^-$ production in association with two jets
Creators: name: Campanario, Francisco
name: Kerner, Matthias
name: Ninh, Le Duc
name: Zeppenfeld, Dieter
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a study of $W^+W^+jj$ and $W^-W^-jj$ production including leptonic decays in hadron-hadron collisions. The full electroweak and QCD induced contributions and their interferences are calculated at leading order. We find that, for inclusive cuts, the interference effects can be large if the jets are produced with large transverse momentum where, however, the production rate is suppressed. We also discuss the vector-boson-fusion (VBF) cuts and show the validity of the VBF approximation. The NLO QCD corrections to the QCD-induced channels are also calculated. Compared to the previous calculation, we allow the intermediate $W$ bosons to be off-shell. For on-shell $W$ production, we obtain an excellent agreement with previous results. Our code will be publicly available as part of the parton level Monte Carlo program VBFNLO.
description: 10 pages, 11 figures, 4 tables, v2: added results using a 2nd scale choice, accepted for publication in Phys. Rev. D
Pycnonotus xanthorrhous Anderson 1869
Creators: name: Le, Hung Manh
name: Ho, Thang
name: Le, Trung Nguyen Thoi
name: Nguyen, Hoa Ngoc
name: Nguyen, Thach Dang
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Pycnonotidae
Pycnonotus
Pycnonotus xanthorrhous

description: Pycnonotus xanthorrhous Anderson, 1869
Pycnonotus xanthorrhous Anderson, 1869
Materials
Type status: Other material. Occurrence: occurrenceID: 41D184C9-175D-541D-8A7F-13720D77EC32; Taxon: kingdom: Animalia; phylum: Chordata; class: Aves; order: Passeriformes; family: Pycnonotidae; genus: Pycnonotus; Location: country: Vietnam; stateProvince: Nghe An; locality: Ky Son; verbatimElevation: 1,658 m; verbatimLatitude: 19 ° 14.207 ’ N; verbatimLongitude: 104 ° 06.542 ’ E
Conservation status
Least Concern
Distribution
Brown-breasted Bulbul has been recorded as a locally common resident in West Tonkin and East Tonkin (Robson 2008, Craik and Minh 2018, Hung et al. 2021 b). This appears to represent the first confirmed record of the species in North Annam, Vietnam. Elsewhere, this species has been recorded breeding in China, Laos, Myanmar and Thailand (IUCN 2024).
Diagnosis
Size: 20 cm. Adult: Brown upperparts, black cap and cheeks, short crest, brown ear-coverts and breast-band, white throat, plain pale greyish underparts, deep yellow undertail-coverts, little or no white on tail-tip (Fig. 6). Juvenile: Breast-band less distinct, dark head markings browner, paler underparts.
description: Published as part of Le, Hung Manh, Ho, Thang, Le, Trung Nguyen Thoi, Nguyen, Hoa Ngoc & Nguyen, Thach Dang, 2024, New records of birds from Central Vietnam, pp. e 133721 in Biodiversity Data Journal 12 on page e133721, DOI: 10.3897/BDJ.12.e133721
The CYGNO experiment, a directional detector for direct Dark Matter searches
Creators: name: Amaro, F. D.
name: Baracchini, E.
name: Benussi, L.
name: Bianco, S.
name: Capoccia, C.
name: Caponero, M.
name: Cardoso, D. S.
name: Cavoto, G.
name: Cortez, A.
name: Costa, I. A.
name: Dané, E.
name: Dho, G.
name: Di Giambattista, F.
name: Di Marco, E.
name: D'Imperio, G.
name: Iacoangeli, F.
name: Jùnior, H. P. L.
name: Lopes, G. S. P.
name: Maccarrone, G.
name: Mano, R. D. P.
name: Gregorio, R. R. M.
name: Marques, D. J. G.
name: Mazzitelli, G.
name: McLean, A. G.
name: Messina, A.
name: Monteiro, C. M. B.
name: Nobrega, R. A.
name: Pains, I. F.
name: Paoletti, E.
name: Passamonti, L.
name: Pelosi, S.
name: Petrucci, F.
name: Piacentini, S.
name: Piccolo, D.
name: Pierluigi, D.
name: Pinci, D.
name: Prajapati, A.
name: Renga, F.
name: Roque, R. J. C.
name: Rosatelli, F.
name: Russo, A.
name: Santos, J. M. F. dos
name: Saviano, G.
name: Spooner, N. J. C.
name: Tesauro, R.
name: Tomassini, S.
name: Torelli, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The CYGNO project aims at the development of a high precision optical readout gaseous Tima Projection Chamber (TPC) for directional dark matter (DM) searches, to be hosted at Laboratori Nazionali del Gran Sasso (LNGS). CYGNO employs a He:CF$_4$ gas mixture at atmospheric pressure with a Gas Electron Multiplier (GEM) based amplification structure coupled to an optical readout comprised of sCMOS cameras and photomultiplier tubes (PMTs). This experimental setup allows to achieve 3D tracking and background rejection down to O(1) keV energy, to boost sensitivity to low WIMP masses. The characteristics of the optical readout approach in terms of the light yield will be illustrated along with the particle identification properties. The project timeline foresees, in the next 2-3 years, the realisation and installation of a 0.4 m$^3$ TPC in the underground laboratories at LNGS to act as a demonstrator. Finally, the studies of the expected DM sensitivities of the CYGNO demonstrator will be presented.
Are We Making Progress In Visualization Research?
Creators: name: Correll, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: In this work, I use a survey of senior visualization researchers and thinkers to ideate about the notion of progress in visualization research: how are we growing as a field, what are we building towards, and are our existing methods sufficient to get us there? My respondents discussed several potential challenges for visualization research in terms of knowledge formation: a lack of rigor in the methods used, a lack of applicability to actual communities of practice, and a lack of theoretical structures that incorporate everything that happens to people and to data both before and after the few seconds when a viewer looks at a value in a chart. Orienting the field around progress (if such a thing is even desirable, which is another point of contention) I believe will require drastic re-conceptions of what the field is, what it values, and how it is taught.
Oryzomys intermedius
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oryzomys
Oryzomys intermedius

description: Oryzomys intermedius (Leche, 1886). Zool. Jahrb., 1:693. TYPE LOCALITY: Brazil, Rio Grande do Sul, Taquara do Mundo Novo. DISTRIBUTION: SE Brazil (Bahia to Rio Grande do Sul), E Paraguay, and NE Argentina (fide Massoia, 1975). COMMENTS: Classified as a subspecies of O. capito by Cabrera (1961) although its distinction from laticeps (= O. capito ) was earlier maintained by Moojen (1952). Gardner and Patton (1976) perceived the closer kinship of intermedius to O. nitidus and suggested their synonymy. Oryzomys intermedius, O. legatus, O. macconnelli, and O. nitidus form a closely-related complex whose interrelationships, specific stature, and distributions deserve investigation.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 722, DOI: 10.5281/zenodo.7353098
description: {"references": ["Massoia, E. 1975. Datos sobre un cricetido nuevo para la Argentina: Oryzomys (Oryzomys) capito intermedius y sus diferencias con Oryzomys (Oryzomys) legatus (Mammalia-Rodentia). Revista de Investigaciones Agropecuarias, INTA, Serie 5, Patologia Vegetal, 11: 1 - 7.", "Moojen, J. 1952. Os roedores do Brasil. Biblioteca Cientifica Brasileira, ser. A, 2: 1 - 214.", "Gardner, A. L., and J. L. Patton. 1976. Karyotypic variation in oryzomyine rodents (Cricetinae) with comments on chromosomal evolution in the Neotropical cricetine complex. Occasional Papers of the Museum of Zoology, Louisiana State University, 49: 1 - 48."]}
General Relativistic N-body simulations in the weak field limit
Creators: name: Adamek, Julian
name: Daverio, David
name: Durrer, Ruth
name: Kunz, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We develop a formalism for General Relativistic N-body simulations in the weak field regime, suitable for cosmological applications. The problem is kept tractable by retaining the metric perturbations to first order, the first derivatives to second order and second derivatives to all orders, thus taking into account the most important nonlinear effects of Einstein gravity. It is also expected that any significant "backreaction" should appear at this order. We show that the simulation scheme is feasible in practice by implementing it for a plane-symmetric situation and running two test cases, one with only cold dark matter, and one which also includes a cosmological constant. For these plane-symmetric situations, the deviations from the usual Newtonian N-body simulations remain small and, apart from a non-trivial correction to the background, can be accurately estimated within the Newtonian framework. The correction to the background scale factor, which is a genuine "backreaction" effect, can be robustly obtained with our algorithm. Our numerical approach is also naturally suited for the inclusion of extra relativistic fields and thus for dark energy or modified gravity simulations.
description: 13 pages + appendix, 5 figures; v2: minor modifications to match printed version
Constraint of $ξ$-moments calculated with QCD sum rules on the pion distribution amplitude models
Creators: name: Zhong, Tao
name: Zhu, Zhi-Hao
name: Fu, Hai-Bing
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: So far, the behavior of the pionic leading-twist distribution amplitude (DA) $ϕ_{2;π}(x,μ)$ $-$ which is universal physical quantity and enters the high-energy processes involving pion based on the factorization theorem $-$ has not been completely consistent. The form of $ϕ_{2;π}(x,μ)$ is usually described by phenomenological models and constrained by the experimental data of the exclusive processes containing pion or the moments calculated with the QCD sum rules and lattice QCD theory. Obviously, an appropriate model is very important for us to determine the exact behavior of $ϕ_{2;π}(x,μ)$. In this paper, by adopting the least squares method to fit the $ξ$-moments calculated with QCD sum rules based on the background field theory, we perform an analysis for several commonly used models of the pionic leading-twist DA in the literature, such as the truncation form of the Gegenbauer polynomial series, the light-cone harmonic oscillator model, the form from the Dyson-Schwinger equations, the model from the light-front holographic AdS/QCD and a simple power-law parametrization form.
description: 10 pages, 2 figures
Alcurus striatus
Creators: name: Le, Hung Manh
name: Ho, Thang
name: Le, Trung Nguyen Thoi
name: Nguyen, Hoa Ngoc
name: Nguyen, Thach Dang
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Pycnonotidae
Alcurus
Alcurus striatus

description: Alcurus striatus (Blyth, 1842)
Materials
Type status: Other material. Occurrence: occurrenceID: 168CB646-1B88-56B9-94FB-1F4797587B4B; Taxon: kingdom: Animalia; phylum: Chordata; class: Aves; order: Passeriformes; family: Pycnonotidae; genus: Alcurus; Location: country: Vietnam; stateProvince: Nghe An; locality: Ky Son; verbatimElevation: 1,946 m; verbatimLatitude: 19 ° 13.391 ’ N; verbatimLongitude: 104 ° 06.145 ’ E
Conservation status
Least Concern
Distribution
Striated Bulbul has been recorded as a uncommon resident in West Tonkin (Robson 2008, Craik and Minh 2018, Hung et al. 2021 b). This is the first confirmed record of the species for North Annam. Elsewhere, this species has been recorded breeding in Bhutan, China, India, Laos, Myanmar, Nepal and Thailand (IUCN 2024).
Diagnosis
Size: 23 cm. Adult: Combination of heavy yellowish-white streaking on head and body, prominent crest and yellow spectacles, mostly yellow throat and undertail-coverts (Fig. 7).
description: Published as part of Le, Hung Manh, Ho, Thang, Le, Trung Nguyen Thoi, Nguyen, Hoa Ngoc & Nguyen, Thach Dang, 2024, New records of birds from Central Vietnam, pp. e 133721 in Biodiversity Data Journal 12 on page e133721, DOI: 10.3897/BDJ.12.e133721
A Condition for Hopf bifurcation to occur in Equations of Lotka - Volterra Type with Delay
Creators: name: Kim, Chol
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34K18, 37G15

description: It is known that Lotka - Volterra type differential equations with delays or distributed delays have an important role in modeling ecological systems. In this paper we study the effects of distributed delay on the dynamics of the harvested one predator - two prey model. Using the expectation of the distribution of the delay as a bifurcation parameter, we show that the equilibrium that was asymptotic stable becomes unstable and Hopf bifurcation can occur as the expectation crosses some critical values.
description: 9 pages, in ver 2 added references and conclusion and further study, version 2 is accepted in JTPC
Liouvillian gap and single spin-flip dynamics in the dissipative Fermi-Hubbard model
Creators: name: Yoshida, Hironobu
name: Katsura, Hosho
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by recent progress in cold-atom experiments, we analyze the SU($N$) Fermi-Hubbard model on a $d$-dimensional hypercubic lattice with two-body loss. By focusing on states near the ferromagnetic steady states, we obtain the Liouvillian gap in closed form for any $d$ and $N$. We also investigate the dynamics of a ferromagnetic initial state with a single spin flip both analytically and numerically. In particular, we show that, by decreasing the strength of the interaction and loss, the survival probability of the spin flip exhibits a crossover from the power-law decay to the exponential decay. We expect that our findings can be tested experimentally with ultracold alkaline-earth-like atoms in an optical lattice.
description: 8 pages, 3 figures
Oryzomys keaysi J. A. Allen 1900
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Oryzomys
Oryzomys keaysi

description: Oryzomys keaysi J. A. Allen, 1900. Bull. Am. Mus. Nat. Hist., 13:225. TYPE LOCALITY: Peru, Puno Dept., valley of upper Rio Inambari, Inca Mines, 6000 ft. DISTRIBUTION: Montane rainforest of E Peruvian Andes. COMMENTS: A subspecies of O. albigularis sensu Cabrera (1961). Genetically divergent from O. albigularis and O. levipes; contiguously allopatric to the latter (see Patton et al., 1990).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 723, DOI: 10.5281/zenodo.7353098
Pteroloma forsstromii
Creators: name: Růžička, Jan
name: Pütz, Andreas
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Agyrtidae
Pteroloma
Pteroloma forsstromii

description: Pteroloma forsstromii (Gyllenhal, 1810) Harpalus Forsströmii Gyllenhal, 1810: 111. Pteroloma forsstromii: NEWTON (1997) (catalogue). Material examined. CHINA: JILIN PROVINCE : Chang Bai Shan, 42°01.733′ N, 128°03.100′ E, ca. 2195 m, 7.vi.2004, J. Cooter leg., under stones, near crater lake, 1 J (JCHC). HEILONGJIANG PROVINCE: Qing Yuan ca. 29 km S Lang Xian, 46°47.470′ N, 129°03.82′ E, ca. 600–700 m, 25.–29.v.2004, flight interception trap, 1 J (aedeagus missing) (JCHC); same locality, but 46°47.002′ N, 129°08.23′ E, ca. 700 m, 25.–28.v.2004, J. Cooter leg., 1 ♀ (JCHC); same locality, but 46°47.002′ N, 129°04.349′ E, ca. 600 m, 26.v.2004, J. Cooter leg., streamside litter, 1 ♀ (JRPC). Distribution. Pteroloma forsstromii is a widely distributed Palaearctic species, known also from adjacent areas in the Far East of Russia and North Korea (LAFER 2002, RŮŽIČKA & SCHNEIDER 2003). Specimens from the Heilongjiang province are only tentatively identified, as this species can be reliably separated from related P. sibiricum Székessy, 1935 only based on the shape of male genitalia (LAFER 2002). First record from China (Fig. 27).
description: Published as part of Růžička, Jan & Pütz, Andreas, 2009, New species and new records of Agyrtidae (Coleoptera) from China, India, Myanmar, Thailand and Vietnam, pp. 631-650 in Acta Entomologica Musei Nationalis Pragae 49 (2) on page 648, DOI: 10.5281/zenodo.5321906
description: {"references": ["NEWTON A. F., Jr. 1997: Review of Agyrtidae (Coleoptera), with a new genus and species from New Zealand. Annales Zoologici (Warszawa) 47: 111 - 156.", "LAFER G. Sh. 2002: A review of species of the genus Pteroloma Gyllenhal (Coleoptera: Pterolominae) from the Russian Far East with the description of a new species from the south of Primorsky Kray. Baltic Journal of Coleopterology 2: 49 - 61.", "RUZICKA J. & SCHNEIDER J. 2003: Interesting distributional records of Agyrtidae and Silphidae (Coleoptera) from the Palaearctic and Oriental region. Klapalekiana 39: 307 - 311."]}
The Non-minimal Heterotic Pure Spinor String in a Curved Background
Creators: name: Chandia, Osvaldo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the non-minimal pure spinor string in a curved background. We find that the minimal BRST invariance implies the existence of a non-trivial stress-energy tensor for the minimal and non-minimal variables in the heterotic curved background. We find constraint equations for the b ghost. We construct the b ghost as a solution of these constraints.
description: 14 pages, harvmac big. Typos corrected. Minor changes, appendix added
The Inner Kiloparsec of Mrk 273 with Keck Adaptive Optics
Creators: name: U, Vivian
name: Medling, Anne
name: Sanders, David
name: Max, Claire
name: Armus, Lee
name: Iwasawa, Kazushi
name: Evans, Aaron
name: Kewley, Lisa
name: Fazio, Giovanni
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: There is X-ray, optical, and mid-infrared imaging and spectroscopic evidence that the late-stage ultraluminous infrared galaxy merger Mrk 273 hosts a powerful active galactic nucleus (AGN). However, the exact location of the AGN and the nature of the nuclei have been difficult to determine due to dust obscuration and the limited wavelength coverage of available high-resolution data. Here we present near-infrared integral-field spectra and images of the nuclear region of Mrk 273 taken with OSIRIS and NIRC2 on the Keck II Telescope with laser guide star adaptive optics. We observe three spatially resolved components, and analyze the local molecular and ionized gas emission lines and their kinematics. We confirm the presence of the hard X-ray AGN in the southwest nucleus. In the north nucleus, we find a strongly rotating gas disk whose kinematics indicate a central black hole of mass 1.04 +/- 0.1 x 10^9 Msun. The H2 emission line shows an increase in velocity dispersion along the minor axis in both directions, and an increased flux with negative velocities in the southeast direction; this provides direct evidence for a collimated molecular outflow along the axis of rotation of the disk. The third spatially distinct component appears to the southeast, 640 and 750 pc from the north and southwest nuclei, respectively. This component is faint in continuum emission but shows several strong emission line features, including [Si vi] 1.964 μm which traces an extended coronal-line region. The geometry of the [Si vi] emission combined with shock models and energy arguments suggest that [Si vi] in the southeast component must be at least partly ionized by the SW AGN or a putative AGN in the northern disk, either through photoionization or through shock-heating from strong AGN- and circumnuclear starburst-driven outflows. This lends support to a scenario in which Mrk 273 may be a dual AGN system.
description: 24 pages, including 15 figures and 2 tables; Accepted for publication in ApJ
KELT-6b: A P~7.9 d Hot Saturn Transiting a Metal-Poor Star with a Long-Period Companion
Creators: name: Collins, Karen A.
name: Eastman, Jason D.
name: Beatty, Thomas G.
name: Siverd, Robert J.
name: Gaudi, B. Scott
name: Pepper, Joshua
name: Kielkopf, John F.
name: Johnson, John Asher
name: Howard, Andrew W.
name: Fischer, Debra A.
name: Manner, Mark
name: Bieryla, Allyson
name: Latham, David W.
name: Fulton, Benjamin J.
name: Gregorio, Joao
name: Buchhave, Lars A.
name: Jensen, Eric L. N.
name: Stassun, Keivan G.
name: Penev, Kaloyan
name: Crepp, Justin R.
name: Hinkley, Sasha
name: Street, Rachel A.
name: Cargile, Phillip
name: Mack, Claude E.
name: Oberst, Thomas E.
name: Avril, Ryan L.
name: Mellon, Samuel N.
name: McLeod, Kim K.
name: Penny, Matthew T.
name: Stefanik, Robert P.
name: Berlind, Perry
name: Calkins, Michael L.
name: Mao, Qingqing
name: Richert, Alexander J. W.
name: DePoy, Darren L.
name: Esquerdo, Gilbert A.
name: Gould, Andrew
name: Marshall, Jennifer L.
name: Oelkers, Ryan J.
name: Pogge, Richard W.
name: Trueblood, Mark
name: Trueblood, Patricia
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery of KELT-6b, a mildly-inflated Saturn-mass planet transiting a metal-poor host. The initial transit signal was identified in KELT-North survey data, and the planetary nature of the occulter was established using a combination of follow-up photometry, high-resolution imaging, high-resolution spectroscopy, and precise radial velocity measurements. The fiducial model from a global analysis including constraints from isochrones indicates that the V=10.38 host star (BD+31 2447) is a mildly evolved, late-F star with T_eff=6102 \pm 43 K, log(g_*)=4.07_{-0.07}^{+0.04} and [Fe/H]=-0.28 \pm 0.04, with an inferred mass M_*=1.09 \pm 0.04 M_sun and radius R_star=1.58_{-0.09}^{+0.16} R_sun. The planetary companion has mass M_P=0.43 \pm 0.05 M_J, radius R_P=1.19_{-0.08}^{+0.13} R_J, surface gravity log(g_P)=2.86_{-0.08}^{+0.06}, and density rho_P=0.31_{-0.08}^{+0.07} g~cm^{-3}. The planet is on an orbit with semimajor axis a=0.079 \pm 0.001 AU and eccentricity e=0.22_{-0.10}^{+0.12}, which is roughly consistent with circular, and has ephemeris of T_c(BJD_TDB)=2456347.79679 \pm 0.00036 and P=7.845631 \pm 0.000046 d. Equally plausible fits that employ empirical constraints on the host star parameters rather than isochrones yield a larger planet mass and radius by ~4-7%. KELT-6b has surface gravity and incident flux similar to HD209458b, but orbits a host that is more metal poor than HD209458 by ~0.3 dex. Thus, the KELT-6 system offers an opportunity to perform a comparative measurement of two similar planets in similar environments around stars of very different metallicities. The precise radial velocity data also reveal an acceleration indicative of a longer-period third body in the system, although the companion is not detected in Keck adaptive optics images.
description: Published in AJ, 17 pages, 15 figures, 6 tables