cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Role of $λ_{hH^+H^-}$ in Higgs boson decays $h$ to $bs$ in the 2HDM
Creators: name: Arco, F.
name: Heinemeyer, S.
name: Herrero, M. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the Two Higgs Doublet Model (2HDM) with $\mathcal{CP}$ conservation and a softly broken $Z_2$ symmetry, we analyze the flavor changing Higgs decays $h\to bs$ ($bs$ refers jointly to the two decay channels $b\bar s$ and $\bar b s$), where $h$ is identified with the SM-like Higgs boson discovered at the LHC. We provide a comprehensive study of the decay width $Γ(h \to bs)$ with particular focus on the most relevant effects from the triple Higgs coupling $λ_{hH^+H^-}$. Furthermore, we consider all the relevant theoretical and experimental constraints to determine which predictions for the $\mathrm{BR}\left(h\to bs\right)$ are still allowed by the current data. We find that the predictions for $\mathrm{BR}\left(h\to bs\right)$ in types II and III can be several orders of magnitude smaller compared to the SM value. In contrast, in type I and IV we find that the predicted enhancements in the decay rates with respect to the SM of up to about 70% and 50%, respectively, are still allowed. We discuss how these deviations from the SM are caused by interference effects controlled by the coupling $λ_{hH^+H^-}$ which can be large for very heavy $H^\pm$. To better understand the role of $λ_{hH^+H^-}$ in the $h \to bs$ decay we derive and analyze here the analytical results for the $hbs$ one-loop effective vertex that is generated by integrating out the heavy $H^\pm$.
description: 33 pages, 5 figures, version published in Phys. Rev. D
Partitioning Schemes and Non-Integer Box Sizes for the Box-Counting Algorithm in Multifractal Analysis
Creators: name: Thiem, Stefanie
name: Schreiber, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We compare different partitioning schemes for the box-counting algorithm in the multifractal analysis by computing the singularity spectrum and the distribution of the box probabilities. As model system we use the Anderson model of localization in two and three dimensions. We show that a partitioning scheme which includes unrestricted values of the box size and an average over all box origins leads to smaller error bounds than the standard method using only integer ratios of the linear system size and the box size which was found by Rodriguez et al. (Eur. Phys. J. B 67, 77-82 (2009)) to yield the most reliable results.
description: 10 pages, 13 figures
An Improved Sequential Quadratic Programming Algorithm for Solving General Nonlinear Programming Problems
Creators: name: Guo, Chuan-Hao
name: Bai, Yan-Qin
name: Jian, Jin-Bao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49M37, 90C26, 90C30, 90C55

description: In this paper, a class of general nonlinear programming problems with inequality and equality constraints is discussed. Firstly, the original problem is transformed into an associated simpler equivalent problem with only inequality constraints. Then, inspired by the ideals of sequential quadratic programming (SQP) method and the method of system of linear equations (SLE), a new type of SQP algorithm for solving the original problem is proposed. At each iteration, the search direction is generated by the combination of two directions, which are obtained by solving an always feasible quadratic programming (QP) subproblem and a SLE, respectively. Moreover, in order to overcome the Maratos effect, the higher-order correction direction is obtained by solving another SLE. The two SLEs have the same coefficient matrices, and we only need to solve the one of them after a finite number of iterations. By a new line search technique, the proposed algorithm possesses global and superlinear convergence under some suitable assumptions without the strict complementarity. Finally, some comparative numerical results are reported to show that the proposed algorithm is effective and promising.
Sgr A* flares: tidal disruption of asteroids and planets?
Creators: name: Zubovas, Kastytis
name: Nayakshin, Sergei
name: Markoff, Sera
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is theoretically expected that a supermassive black hole (SMBH) in the centre of a typical nearby galaxy disrupts a Solar-type star every ~ 10^5 years, resulting in a bright flare lasting for months. Sgr A*, the resident SMBH of the Milky Way, produces (by comparison) tiny flares that last only hours but occur daily. Here we explore the possibility that these flares could be produced by disruption of smaller bodies - asteroids. We show that asteroids passing within an AU of Sgr A* could be split into smaller fragments which then vaporise by bodily friction with the tenuous quiescent gas accretion flow onto Sgr A*. The ensuing shocks and plasma instabilities may create a transient population of very hot electrons invoked in several currently popular models for Sgr A* flares, thus producing the required spectra. We estimate that asteroids larger than ~ 10 km in size are needed to power the observed flares, with the maximum possible luminosity of the order 10^39 erg s^-1. Assuming that the asteroid population per parent star in the central parsec of the Milky Way is not too dissimilar from that around stars in the Solar neighbourhood, we estimate the asteroid disruption rates, and the distribution of the expected luminosities, finding a reasonable agreement with the observations. We also note that planets may be tidally disrupted by Sgr A* as well, also very infrequently. We speculate that one such disruption may explain the putative increase in Sgr A* luminosity ~ 300 yr ago.
description: 11 pages. MNRAS submitted
Scalar-Induced Gravitational Waves from Ghost Inflation and Parity Violation
Creators: name: Garcia-Saenz, Sebastian
name: Lu, Yizhou
name: Shuai, Zhiming
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the scalar-induced gravitational wave energy density in the theory of Ghost Inflation, assuming scale invariance and taking into account both the power spectrum- and trispectrum-induced contributions. For the latter we consider the leading cubic and quartic couplings of the comoving curvature perturbation in addition to two parity-violating quartic operators. In the parity-even case, we find the relative importance of the trispectrum-induced signal to be suppressed by the requirement of perturbativity, strengthening a no-go theorem recently put forth. The parity-odd signal, even though also bound to be small, is non-degenerate with the Gaussian contribution and may in principle be comparable to the parity-even non-Gaussian part, thus potentially serving as a probe of the Ghost Inflation scenario and of parity violating physics during inflation.
description: 36pages
Arothron reticularis
Creators: name: Zainal Abidin, Danial Hariz
name: Lavoué, Sébastien
name: Mohd Abu Hassan Alshari, Norli Fauzani
name: Mohd. Nor, Siti Azizah
name: A. Rahim, Masazurah
name: Mohammed Akib, Noor Adelyna
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Tetraodontiformes
Tetraodontidae
Arothron
Arothron reticularis

description: Arothron reticularis (Bloch & Schneider, 1801) Figure 5L Material examined. MALAYSIA • 1, 266 mm TL; Kedah State, Kampung Batu Lintang, Pompang Batu Lintang; 05.624°N, 100.395°E; 19 Apr. 2019; Danial H. Zainal Abidin, Norli F.M.A.H. Alshari leg.; USMFC (40) 000010.
description: Published as part of Zainal Abidin, Danial Hariz, Lavoué, Sébastien, Mohd Abu Hassan Alshari, Norli Fauzani, Mohd. Nor, Siti Azizah, A. Rahim, Masazurah & Mohammed Akib, Noor Adelyna, 2021, Ichthyofauna of Sungai Merbok Mangrove Forest Reserve, northwest Peninsular Malaysia, and its adjacent marine waters, pp. 601-631 in Check List 17 (2) on page 627, DOI: 10.15560/17.2.601
Transport Gap in Suspended Bilayer Graphene at Zero Magnetic Field
Creators: name: Veligura, A.
name: van Elferen, H. J.
name: Tombros, N.
name: Maan, J. C.
name: Zeitler, U.
name: van Wees, B. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report a change of three orders of magnitudes in the resistance of a suspended bilayer graphene flake which varies from a few k$Ω$s in the high carrier density regime to several M$Ω$s around the charge neutrality point (CNP). The corresponding transport gap is 8 meV at 0.3 K. The sequence of appearing quantum Hall plateaus at filling factor $ν=2$ followed by $ν=1$ suggests that the observed gap is caused by the symmetry breaking of the lowest Landau level. Investigation of the gap in a tilted magnetic field indicates that the resistance at the CNP shows a weak linear decrease for increasing total magnetic field. Those observations are in agreement with a spontaneous valley splitting at zero magnetic field followed by splitting of the spins originating from different valleys with increasing magnetic field. Both, the transport gap and $B$ field response point toward spin polarized layer antiferromagnetic state as a ground state in the bilayer graphene sample. The observed non-trivial dependence of the gap value on the normal component of $B$ suggests possible exchange mechanisms in the system.
description: 8 pages, 5 figures
Large Vibrationally Induced Parity Violation Effects in CHDBrI$^+$ $-$ A Promising Candidate for Future Experiments
Creators: name: Eduardus
name: Shagam, Yuval
name: Landau, Arie
name: Faraji, Shirin
name: Schwerdtfeger, Peter
name: Borschevsky, Anastasia
name: Pašteka, Lukáš F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The isotopically chiral molecular ion CHDBrI$^+$ is identified as an exceptionally promising candidate for the detection of parity violation in vibrational transitions. The largest predicted parity-violating frequency shift reaches 1.8 Hz for the hydrogen wagging mode which has a sub-Hz natural line width and its vibrational frequency auspiciously lies in the available laser range. In stark contrast to this result, the parent neutral molecule is two orders of magnitude less sensitive to parity violation. The origin of this effect is analyzed and explained. Precision vibrational spectroscopy of CHDBrI$^+$ is feasible as it is amenable to preparation at internally low temperatures and resistant to predissociation, promoting long interrogation times (Landau et al.). The intersection of these properties in this molecular ion places the first observation of parity violation in chiral molecules within reach.
Manufacturer’s channel strategy with retailer’s store brand
Creators: name: Wang, Lisha
name: Chen, Jing
name: Song, Huaming
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Computational Biology

description: This paper examines the manufacturer’s channel strategy as it considers introducing an online channel to sell its own national brand (NB) product, when the brick-and-mortar retailer sells both the NB and its own lower-quality store brand (SB) product. The manufacturer is motivated to introduce an online channel when the customers’ ‘hassle cost' of shopping online is relatively low and their transportation cost is relatively high. However, our results also demonstrate that when the online shopping hassle cost is high and the transportation cost is low, and even when there are very few sales in the online channel, the online-sales strategy can still contribute positively to the manufacturer’s profit. The introduction of the online channel by the manufacturer may result in a win-win situation for the manufacturer and the retailer. As a corollary effect, when the retailer is able to determine the SB quality, it should position the SB at a lower quality level to avoid competition with the manufacturer’s online channel.
Harmonic oscillator model for the atom-surface Casimir-Polder interaction energy
Creators: name: Passante, Roberto
name: Rizzuto, Lucia
name: Spagnolo, Salvatore
name: Tanaka, Satoshi
name: Petrosky, Tomio Y.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we consider a quantum harmonic oscillator interacting with the electromagnetic radiation field in the presence of a boundary condition preserving the continuous spectrum of the field, such as an infinite perfectly conducting plate. Using an appropriate Bogoliubov-type transformation we can diagonalize exactly the Hamiltonian of our system in the continuum limit and obtain non-perturbative expressions for its ground-state energy. From the expressions found, the atom-wall Casimir-Polder interaction energy can be obtained, and well-know lowest-order results are recovered as a limiting case. Use and advantage of this method for dealing with other systems where perturbation theory cannot be used is also discussed.
description: 6 pages
In-service multicultural education in one urban school district in British Columbia : a critical and transformative perspective
Creators: name: Miled, Neila
Publisher: name: University of British Columbia
Year: 2012

description: This qualitative research study aimed to explore teachers’ in-service multicultural education and the nature of teachers’ professional development in one urban school district in the province of British Columbia. This study focused on the perspectives of five participants; four participants from the School District and one participant from the Teacher Association. All participants were involved in teachers’ in-service professional development. From a critical lens and using semi–structured interviews and document analysis the study explored the participants’ understanding of multiculturalism and the theoretical frameworks that may have shaped the participants’ choices and actions concerning how they educate and support teachers to handle the complexities of diversity and multiculturalism within the current changing demographics of the school district. The study revealed that despite four decades of official multicultural policy, and the abundant academic research in the field of multiculturalism, teachers’ multicultural education in the school district is still limited to the “celebratory” tokenistic approach and doesn’t move beyond “festivals, food and dance”. It also revealed that critical discourses that link multicultural education to equity and social justice are absent and feared. The study highlights the need to rethink teachers’ in-service multicultural education from critical perspectives that embrace critical and transformative stance and that reject the fallacy of apolitical education and neutral educators.
A model of $\bar{B}^0\to D^{*+}ωπ^-$ decay
Creators: name: Matvienko, D. V.
name: Kuzmin, A. S.
name: Eidelman, S. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We suggest a parameterization of the matrix element for $\bar{B}^0\to D^{*+}ωπ^-$ decay using kinematic variables convenient for experimental analysis. The contributions of intermediate $ωπ$- and $D^{**}$-states up to spin 3 have been taken into account. The angular distributions for each discussed hypothesis have been obtained and analysed using Monte-Carlo simulation.
description: 24 pages, 9 figures, 1 table; V2: text in some places improved and acknowledgments added
A new deterministic model for chaotic reversals
Creators: name: Gissinger, Christophe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We present a new chaotic system of three coupled ordinary differential equations, limited to quadratic nonlinear terms. A wide variety of dynamical regimes are reported. For some parameters, chaotic reversals of the amplitudes are produced by crisis-induced intermittency, following a mechanism different from what is generally observed in similar deterministic models. Despite its simplicity, this system therefore generates a rich dynamics, able to model more complex physical systems. In particular, a comparison with reversals of the magnetic field of the Earth shows a surprisingly good agreement, and highlights the relevance of deterministic chaos to describe geomagnetic field dynamics.
description: 12 pages, 14 figures, accepted in EPJB
Predictability of Recurrent Weather Regimes over North America during Winter from Submonthly Reforecasts
Creators: name: Vigaud, Nicolas
name: Robertson, Andrew W.
name: Tippett, Michael K.
Publisher: name: Columbia University
Year: 2018
Subjects: Weather
Climatic changes
Climatology--Forecasting
Environmental sciences

description: Four recurrent weather regimes are identified over North America from October to March through a k-means clustering applied to MERRA daily 500-hPa geopotential heights over the 1982–2014 period. Three regimes resemble Rossby wave train patterns with some baroclinicity, while one is related to an NAO-like meridional pressure gradient between eastern North America and western regions of the North Atlantic. All regimes are associated with distinct rainfall and surface temperature anomalies over North America. The four-cluster partition is well reproduced byECMWFweek-1 reforecasts over the 1995–2014 period in terms of spatial structures, daily regime occurrences, and seasonal regime counts. The skill in forecasting daily regime sequences and weekly regime counts is largely limited to 2 weeks. However, skill relationships with the MJO, ENSO, and SST variability in the Atlantic and Indian Oceans suggest further potential for subseasonal predictability based on wintertime large-scale weather regimes.
Deploying Advanced Metering Infrastructure on the Natural Gas System: Regulatory Challenges and Opportunities
Creators: name: Webb, Romany M.
Publisher: name: Columbia University
Year: 2018
Subjects: subject: Law
subject: FOS: Law
subject: Natural gas
subject: Energy consumption--Economic aspects
subject: Climatic changes
subject: Gas-meters

description: Recent increases in domestic natural gas use have been widely heralded as a vital step in the fight against climate change. Proponents often characterize natural gas as a “clean” fossil fuel, emphasizing that its combustion produces fewer greenhouse gas emissions than coal and oil, per unit of energy produced. These savings at the point of combustion may, however, be offset by emissions during natural gas production and transportation. Recognizing this, a number of analysts have expressed concern that continued use of natural gas will hamper efforts to address climate change, and called for reductions in gas use. This paper explores opportunities to promote more efficient natural gas use in the residential and commercial sectors, through deployment of advanced metering infrastructure (AMI), consisting of state-of-the-art gas meters connected to a wireless network that supports two-way communication. Such systems enable hourly or daily natural gas usage figures to be collected and transmitted to customers in real-time, thereby encouraging greater conservation and leading a reduction in greenhouse gas emissions. Additional emissions reductions may also occur due to improved management of the natural gas pipeline system. Despite these benefits, to date, AMI has not been widely deployed on the natural gas distribution system in the U.S. The reasons for this are poorly understood; previous research has focused exclusively on market barriers to deploying AMI and failed to consider other possible explanations for the slow rate of deployment. This is intended to fill that gap. The paper draws on recent experience with deployment in California, Maryland, and New York to assess how regulation affects incentives to invest in AMI.
Lagocephalus lunaris
Creators: name: Zainal Abidin, Danial Hariz
name: Lavoué, Sébastien
name: Mohd Abu Hassan Alshari, Norli Fauzani
name: Mohd. Nor, Siti Azizah
name: A. Rahim, Masazurah
name: Mohammed Akib, Noor Adelyna
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Tetraodontiformes
Tetraodontidae
Lagocephalus
Lagocephalus lunaris

description: Lagocephalus lunaris (Bloch & Schneider, 1801) Material examined. MALAYSIA • 1, 67 mm TL; Kedah State, Kuala Kedah, Kuala Muda Whispering Market; 05.578°N, 100.341°E; 6 Dec. 2018; Danial H. Zainal Abidin, Norli F.M.A.H. Alshari leg.; USMFC (40) 00005. • 2, 72– 102 mm TL; Kedah State, Kuala Kedah, Kuala Muda Whispering Market; 05.578°N, 100.341°E; 6 Dec. 2018; Danial H. Zainal Abidin, Norli F.M.A.H. Alshari leg.; USMFC (40) 00004. • 1, 154 mm TL; Kedah State, Merbok, Pompang Sungai Merbok; 05.664°N, 100.381°E; 6 Dec. 2018; Danial H. Zainal Abidin, Norli F.M.A.H. Alshari leg.; USMFC (40) 00007. • 3, 120– 142 mm TL; Kedah State, Kuala Kedah, Kuala Muda Whispering Market; 05.578°N, 100.341°E; 19 Mar. 2019; Danial H. Zainal Abidin, Norli F.M.A.H. Alshari leg.; USMFC (40) 00008.
description: Published as part of Zainal Abidin, Danial Hariz, Lavoué, Sébastien, Mohd Abu Hassan Alshari, Norli Fauzani, Mohd. Nor, Siti Azizah, A. Rahim, Masazurah & Mohammed Akib, Noor Adelyna, 2021, Ichthyofauna of Sungai Merbok Mangrove Forest Reserve, northwest Peninsular Malaysia, and its adjacent marine waters, pp. 601-631 in Check List 17 (2) on page 628, DOI: 10.15560/17.2.601
Invariant Descriptors of Motion and Force Trajectories for Interpreting Object Manipulation Tasks in Contact
Creators: name: Vochten, Maxim
name: Mohammadi, Ali Mousavi
name: Verduyn, Arno
name: De Laet, Tinne
name: Aertbeliën, Erwin
name: De Schutter, Joris
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Invariant descriptors of point and rigid-body motion trajectories have been proposed in the past as representative task models for motion recognition and generalization. Currently, no invariant descriptor exists for representing force trajectories, which appear in contact tasks. This paper introduces invariant descriptors for force trajectories by exploiting the duality between motion and force. Two types of invariant descriptors are presented depending on whether the trajectories consist of screw or vector coordinates. Methods and software are provided for robustly calculating the invariant descriptors from noisy measurements using optimal control. Using experimental human demonstrations of 3D contour following and peg-on-hole alignment tasks, invariant descriptors are shown to result in task representations that do not depend on the calibration of reference frames or sensor locations. The tuning process for the optimal control problems is shown to be fast and intuitive. Similar to motions in free space, the proposed invariant descriptors for motion and force trajectories may prove useful for the recognition and generalization of constrained motions, such as during object manipulation in contact.
description: 20 pages, 14 figures. Accepted for Publication in IEEE Transactions on Robotics (July 25, 2023)
Takifugu oblongus
Creators: name: Zainal Abidin, Danial Hariz
name: Lavoué, Sébastien
name: Mohd Abu Hassan Alshari, Norli Fauzani
name: Mohd. Nor, Siti Azizah
name: A. Rahim, Masazurah
name: Mohammed Akib, Noor Adelyna
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Tetraodontiformes
Tetraodontidae
Takifugu
Takifugu oblongus

description: Takifugu oblongus (Bloch, 1786) Material examined. MALAYSIA • 1, 102 mm TL; Kedah State, Kuala Kedah, Kuala Muda Whispering Market; 05.578°N, 100.341°E; 19 Mar. 2019; Danial H. Zainal Abidin, Norli F.M.A.H. Alshari leg.; USMFC (40) 00009.
description: Published as part of Zainal Abidin, Danial Hariz, Lavoué, Sébastien, Mohd Abu Hassan Alshari, Norli Fauzani, Mohd. Nor, Siti Azizah, A. Rahim, Masazurah & Mohammed Akib, Noor Adelyna, 2021, Ichthyofauna of Sungai Merbok Mangrove Forest Reserve, northwest Peninsular Malaysia, and its adjacent marine waters, pp. 601-631 in Check List 17 (2) on page 628, DOI: 10.15560/17.2.601
Eben Norton Horsford, the Northmen, and the Founding of Massachusetts
Creators: name: John, Richard R.
Publisher: name: Columbia University
Year: 1998
Subjects: subject: Civilization
subject: History
subject: Political science
subject: FOS: Political science

description: On a grassy knoll overlooking the Charles River near Mount Auburn Hospital in Cambridge, Massachusetts, one can find a commemorative stone tablet with a curious inscription. Here once stood a house of Leif Erikson's, or so we are told. The inscription is so authoritative, and the tablet itself so similar to the myriad historical markers in the immediate vicinity, that it has doubtless been taken at face value by many of the countless passersby who have paused to make it out. This curious tablet first came to my attention in the early 1980s, when I was a resident fellow at the Cambridge Historical Society, which happened to be just down the street. As a graduate student in American civilization, I quite naturally found its inscription intriguing and set out to discover what I could about its installation. This essay brings together my findings.
A unified supernova catalogue
Creators: name: Lennarz, Dirk
name: Altmann, David
name: Wiebusch, Christopher
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper a new supernova catalogue containing data for 5526 extragalactic supernovae that were discovered up to 2010 December 31 is presented. It combines several catalogues that are currently available online in a consistent and traceable way. During the comparison of the catalogues inconsistent entries were identified and resolved where possible. Remaining inconsistencies are marked transparently and can be easily identified. Thus it is possible to select a high-quality sample in a most simple way. Where available, redshift-based distance estimates to the supernovae were replaced by journal-refereed distances. Examples of statistical studies that are now possible with this new catalogue are presented in this paper.
description: 9 pages, 12 figures, catalogue is available at http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/538/A120
Signatures of New Physics from HBT Correlations in UHECRs
Creators: name: Srivastava, Rahul
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Quantum fields written on noncommutative spacetime (Groenewold - Moyal plane) obey twisted commutation relations. In this paper we show that these twisted commutation relations result in Hanbury-Brown Twiss (HBT) correlations that are distinct from that for ordinary bosonic or fermionic fields, and hence can provide us useful information about underlying noncommutative nature of spacetime. The deviation from usual bosonic/fermionic statistics becomes pronounced at high energies, suggesting that a natural place is to look at Ultra High Energy Cosmic Rays (UHECRs). Since the HBT correlations are sensitive only to the statistics of the particles, observations done with UHECRs are capable of providing unambiguous signatures of noncommutativity, without any detailed knowledge of the mechanism and source of origin of UHECRs.
description: 8 pages, 4 figures, references and minor comments added, conclusions unchanged, version to be published in Mod. Phys. Lett. A
Making News
Creators: name: John, Richard R.
name: Silberstein-Loeb, Jonathan
Publisher: name: Columbia University
Year: 2015
Subjects: Journalism--Technological innovations
Press
Internet
Communication and technology

description: News reporting is expensive, yet information wants to be free. This unsettling paradox has perplexed everyone who is interested in the future of high-quality journalism. How can the news business be re-envisioned in a rapidly changing world? Can market incentives and technological imperatives provide a way forward? How important were the institutional arrangements that protected the production and distribution of news in the past?
Optical study of three-dimensional Weyl semimetal Mn$_3$Sn
Creators: name: Cao, L. Y.
name: Xu, Z. A.
name: Gao, B. X.
name: Wang, L.
name: Zhang, X. T.
name: Zhang, X. Y.
name: Guo, Y. F.
name: Chen, R. Y.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Three-dimensional (3D) Weyl semimetal Mn$_3$Sn has attracted tremendous attention due to its great application potential. However, the complex magnetic structures at different temperature intervals make it extremely difficult to unravel the underlying electronic structures of Mn$_3$Sn. Here, we perform temperature-dependent optical spectroscopy measurements on single crystalline Mn$_3$Sn to investigate its charge dynamics. We find that both of the optical reflectivity $R(ω)$ and conductivity $σ_1(ω)$ evolve very smoothly across the magnetic phase transition at $T_M$ = 285 K, where the giant anomalous Hall effect (AHE) at room temperature drops significantly. Furthermore, two linearly increasing segments of $σ_1(ω)$ are observed in the whole temperature range from 300 K to 10 K, indicating that the existence of Weyl fermions is very robust against the magnetic phase transition. In addition, the Weyl points closest to the Fermi level $E_F$ are identified to be located about 101 meV away from $E_F$ at 10 K, and the associated Fermi velocity is about 2.55 $\times 10^7$ cm/s. Our results reveal that the phase transition at $T_M$ only generates subtle modification to the band structure, which helps to further uncover the mechanism of the dramatic change of AHE in Mn$_3$Sn.
Prochiloneurus Silvestri 1915
Creators: name: Noyes, John Stuart
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Encyrtidae
Prochiloneurus

description: Key to Costa Rican species of Prochiloneurus
(Females)
1. Exserted part of ovipositor at least about 0.9X as long as mid tibia...............................2
- Exserted part of ovipositor not more than about 0.6X as long as mid tibia................... 5
2 (1) Scape (Figs. 1161, 1165) less than 4X as long as broad................................................. 3
- Scape (Figs 1170, 1178) more than 4X as long as broad................................................ 4
description: Published as part of Noyes, John Stuart, 2023, ENCYRTIDAE OF COSTA RICA (HYMENOPTERA: CHALCIDOIDEA), 4 Subfamily Encyrtinae: tribes Arrhenophagini, Habrolepidini, Cerapterocerini, Cheiloneurini, Trechnitini, Cercobelini, Polaszekiini, Protyndarichoidini, Gahaniellini and Syrphophagini (part), mainly primary parasitoids and hyperparasitoids of Coccoidea and Psylloidea (Hemiptera), pp. 1-921 in Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) (Oxford, England) 2 (11) on page 459, DOI: 10.5281/zenodo.8074943
Triacanthus nieuhofii Bleeker 1852
Creators: name: Zainal Abidin, Danial Hariz
name: Lavoué, Sébastien
name: Mohd Abu Hassan Alshari, Norli Fauzani
name: Mohd. Nor, Siti Azizah
name: A. Rahim, Masazurah
name: Mohammed Akib, Noor Adelyna
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Hexanauplia
Cyclopoida
Taeniacanthidae
Triacanthus
Triacanthus nieuhofii

description: Triacanthus nieuhofii Bleeker, 1852 Figure 5M Material examined. MALAYSIA • 1, 136 mm TL; Kedah State, Merbok, Pompang Sungai Merbok; 05.664°N, 100.381°E; 6 Dec. 2018; Danial H. Zainal Abidin, Norli F.M.A.H. Alshari leg.; USMFC (61) 00002. • 1, 145 mm TL; Kedah State, Kuala Kedah, Kuala Muda Whispering Market; 05.578°N, 100.341°E; 19 Mar. 2019; Danial H. Zainal Abidin, Norli F.M.A.H. Alshari leg.; USMFC (61) 00003.
description: Published as part of Zainal Abidin, Danial Hariz, Lavoué, Sébastien, Mohd Abu Hassan Alshari, Norli Fauzani, Mohd. Nor, Siti Azizah, A. Rahim, Masazurah & Mohammed Akib, Noor Adelyna, 2021, Ichthyofauna of Sungai Merbok Mangrove Forest Reserve, northwest Peninsular Malaysia, and its adjacent marine waters, pp. 601-631 in Check List 17 (2) on page 628, DOI: 10.15560/17.2.601
A Many-body Problem with Point Interactions on Two Dimensional Manifolds
Creators: name: Erman, Fatih
name: Turgut, O. Teoman
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A non-perturbative renormalization of a many-body problem, where non-relativistic bosons living on a two dimensional Riemannian manifold interact with each other via the two-body Dirac delta potential, is given by the help of the heat kernel defined on the manifold. After this renormalization procedure, the resolvent becomes a well-defined operator expressed in terms of an operator (called principal operator) which includes all the information about the spectrum. Then, the ground state energy is found in the mean field approximation and we prove that it grows exponentially with the number of bosons. The renormalization group equation (or Callan-Symanzik equation) for the principal operator of the model is derived and the $β$ function is exactly calculated for the general case, which includes all particle numbers.
description: 28 pages; typos are corrected, three figures are added
Invisibility and PT-symmetry
Creators: name: Mostafazadeh, Ali
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For a general complex scattering potential defined on a real line, we show that the equations governing invisibility of the potential are invariant under the combined action of parity and time-reversal (PT) transformation. We determine the PT-symmetric an well as non-PT-symmetric invisible configurations of an easily realizable exactly solvable model that consists of a two-layer planar slab consisting of optically active material. Our analysis shows that although PT-symmetry is neither necessary nor sufficient for the invisibility of a scattering potential, it plays an important role in the characterization of the invisible configurations. A byproduct of our investigation is the discovery of certain configurations of our model that are effectively reflectionless in a spectral range as wide as several hundred nanometers.
description: 11 pages, 3 figures, revised version, accepted for publication in Phys.Rev. A
Characterization of maize producing households in Monze and Kalomo districts in Zambia
Creators: name: Thomson Kalinda
name: Gelson Tembo
name: Kuntashula, Elias
name: Langyintuo, Augustine
name: Mwangi, Wilfred
name: Rovere, Robert La
Publisher: name: Gates Open Research
Year: 2019

description: Characterization of maize producing households in Monze and Kalomo districts in Zambia
Motion cues enhance gaze processing
Creators: name: Anderson, Nicola Christine Cole
Publisher: name: University of British Columbia
Year: 2012

description: In four experiments, we investigated the role of motion in gaze perception. In Experiment 1, we developed and evaluated a comprehensive stimulus set of small eye movements at three different gaze angles (1, 2 and 3 degrees visual angle) and demonstrated that observers were able to detect and discriminate these small eye movements with a high degree of fidelity. In Experiments 2 and 3, we evaluated discrimination accuracy and confidence to dynamic and static gaze stimuli. We demonstrated that the reason for the high sensitivity to gaze in Experiment 1 was due predominantly to the presence of the motion signal in the video stimuli. Accuracy to dynamic gaze was significantly higher than accuracy to static gaze. In addition, the size of the gaze angle (i.e. signal strength) increased accuracy for static gaze despite the fact that confidence for these stimuli was consistently moderate. This latter result suggests that the dynamic gaze signal is qualitatively different from the static gaze signal. In Experiment, 4 we tested this possibility by reversing the contrast polarity of half of the gaze stimuli. This manipulation has been shown to disrupt normal gaze processing. We reasoned that if the perception of static and dynamic gaze are fundamentally different, contrast reversal will differentially effect these two types of gaze stimuli. Indeed, contrast reversal impaired the perception of static, but not dynamic gaze, confirming that the perception of dynamic and static gaze are qualitatively different.
Putting the United States in North America
Creators: name: John, Richard R.
Publisher: name: Columbia University
Year: 2010
Subjects: History
Economic development
Territorial expansion

description: Many historians of the United States in the long nineteenth century locate it in the Atlantic world. There is good reason for this. The United States in this period remained culturally, economically, and politically an appendage of Europe. Its inhabitants traded with European countries, remained enmeshed in European power politics, and read European books. This essay shifts the angle of vision from the Atlantic world to the North American continent. Territorial expansion and economic development owed much to geographical propinquity, and Canada, Mexico, and the West Indies each abutted the United States.
A simple minimax estimator for quantum states
Creators: name: Ng, Hui Khoon
name: Englert, Berthold-Georg
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum tomography requires repeated measurements of many copies of the physical system, all prepared by a source in the unknown state. In the limit of very many copies measured, the often-used maximum-likelihood (ML) method for converting the gathered data into an estimate of the state works very well. For smaller data sets, however, it often suffers from problems of rank deficiency in the estimated state. For many systems of relevance for quantum information processing, the preparation of a very large number of copies of the same quantum state is still a technological challenge, which motivates us to look for estimation strategies that perform well even when there is not much data. In this article, we review the concept of minimax state estimation, and use minimax ideas to construct a simple estimator for quantum states. We demonstrate that, for the case of tomography of a single qubit, our estimator significantly outperforms the ML estimator for small number of copies of the state measured. Our estimator is always full-rank, and furthermore, has a natural dependence on the number of copies measured, which is missing in the ML estimator.
description: 26 pages, 3 figures. v2 contains minor improvements to the text, and an additional appendix on symmetric measurements
Postal Systems
Creators: name: John, Richard R.
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Social sciences
subject: FOS: Social sciences
subject: Postal service
subject: History
subject: Communication

description: Postal systems are administratively coordinated communication networks that originated in antiquity, yet remain important today. During their 4000-year history, they have changed significantly, making it hard to generalize about their scale, scope, and accessibility. Until fairly recently, for example, postal systems often conveyed people in addition to information and goods. Most surveys of the world’s postal systems are institutional genealogies. Postal systems beget one another in a grand procession of names, places, and dates. Such an approach has the merit of bringing together a wealth of anecdotal material, not easily found elsewhere. Yet, it exaggerates continuity, discourages systematic comparison, and obscures the role of the postal system as an agent of change. This article takes a comparative institutional approach. The world’s postal systems are divided into three groups: imperial, corporate, and national. The section on National Postal Systems is subdivided into three parts: early national postal systems, postal reform, and postal systems in the twentieth and twenty-first century. The article concludes with a brief discussion of postal systems and social science, with some suggestions for future research.
The extinction curve in the visible and the value of Rv
Creators: name: Zagury, Frederic
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This article discusses the interstellar extinction curve in the visible and the value of Rv. It is concluded that the visible extinction curve is likely to be linear in the visible, and that indirect estimates of Rv from tentative determinations of Av, infrared, or UV observations are questionable. There is currently no evidence of any variation of Rv with direction. If Rv is close to 3, as it has been inferred from mid-infrared data, starlight in the visible is extinguished by a factor F/F_0=(2.5exp{-2micron/lambda})^{E(B-V)} in the visible. But if the visible wavelength range alone is considered, 4 appears as its most natural and probable value, and F/F_0= exp{-2E(B-V)/lambda}.
description: 4 figures. Published in Astronomische Nachrichten. Label of Fig. 1 is corrected in the present version. Paper previously rejected by MNRAS (MJ Barlow editor, review is available)
Measurement of spin diffusion in semi-insulating GaAs
Creators: name: Weber, C. P.
name: Benko, Craig A.
name: Hiew, Stanley C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We use optical transient-grating spectroscopy to measure spin diffusion of optically oriented electrons in bulk, semi-insulating GaAs(100). Trapping and recombination do not quickly deplete the photoexcited population. The spin diffusion coefficient of 88 +/- 12 cm2/s is roughly constant at temperatures from 15 K to 150 K, and the spin diffusion length is at least 450 nm. We show that it is possible to use spin diffusion to estimate the electron diffusion coefficient. Due to electron-electron interactions, the electron diffusion is 1.4 times larger than the spin diffusion.
Ruling Passions: Political Economy in Nineteenth-Century America
Creators: name: John, Richard R.
Publisher: name: Columbia University
Year: 2006
Subjects: subject: History
subject: Political science
subject: FOS: Political science
subject: Economics
subject: Political planning

description: In recent years, the Journal of Policy History has emerged as a major venue for scholarship on American policy history in the period after 1900. Indeed, it is for this reason that it is often praised as the leading outlet for scholarship on American political history in the world. Only occasionally, however, has it featured essays on the early republic, the Civil War, or the post–Civil War era. And when it has, the essays have often focused on partisan electioneering rather than on governmental institutions. The rationale for this special issue of the Journal of Policy History is to expand the intellectual agenda of policy history backward in time so as to embrace more fully the history of governmental institutions in the period before 1900. The six essays that follow contain much that will be new even for specialists in nineteenth-century American policy history, yet they are written in a style that is intended to be accessible to college undergraduates and historians unfamiliar with the period.
Ursus americanus
Creators: name: Álvarez-Córdova, Fernando
name: Fernández, Jesús A.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Ursidae
Ursus
Ursus americanus

description: Ursus americanus (Pallas, 1780) Black Bear Figure 2H Material examined. MEXICO – Chihuahua • 1 Municipality of Namiquipa, Potrero Lajas, 28°46′34″N, 107° 27′34″W; elevation 2,180 m a.s.l.; 16 Jan. 2018; obs. F. Álvarez-Córdova. Identification. This is the only extant species of Ursus Linnaeus, 1758 in Mexico. It is a medium-sized bear with long, coarse, black or brown fur (Larivière 2001). Distribution. Canada, USA, and Mexico through the pine, pine-oak forests of the Sierra Madre Occidental and Sierra Madre Oriental (Larivière 2001). Recorded habitats in Chihuahua are sierras and valleys. Remarks. This species is now extirpated from most of northern Mexico. It only survives in small patches of forests in the Sierra Madre Occidental and Sierra Madre Oriental in central and northern Mexico (Scheick and McCown 2014). The record presented here is based on a single scat.
description: Published as part of Álvarez-Córdova, Fernando & Fernández, Jesús A., 2021, Medium-sized and large mammals of the pine-oak forests and grasslands of the Rancho Experimental Teseachi in Chihuahua, Mexico, pp. 669-681 in Check List 17 (2) on page 677, DOI: 10.15560/17.2.669
description: {"references": ["Lariviere S (2001) Ursus americanus. Mammalian Species 647: 1 - 11. https: // doi. org / 10.2307 / 0.647.1", "Scheick BK, McCown W (2014) Geographic distribution of American Black Bears in North America. Ursus 25 (1): 24 - 33. https: // doi. org / 10.2192 / ursus-d- 12 - 00020.1"]}
Additional file 2 of Exosomal miR-200c-3p negatively regulates the migraion and invasion of lipopolysaccharide (LPS)-stimulated colorectal cancer (CRC)
Creators: name: Jiang, Yimei
name: Ji, Xiaopin
name: Liu, Kun
name: Shi, Yiqing
name: Wang, Changgang
name: Li, You
name: Zhang, Tao
name: He, Yonggang
name: Xiang, Ming
name: Zhao, Ren
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 2: Figure S1. Exosomal miR-200c-3p expression in HCT-116, HT-29 and SW480 CRC cell lines after LPS stimulation. Cells were treated with 10 ng/mL LPS for 24 h before isolating exosomes. Total RNAs were extracted from exosomes, and cDNAs were synthesized from miRNAs. Expression levels of miR-200c-3p in exosomes were measured by quantitative real-time PCR (n = 3). Two-tailed t-test was performed for statistical analysis. * p < 0.05.
The Politics of Innovation
Creators: name: John, Richard R.
Publisher: name: Columbia University
Year: 1998
Subjects: subject: Communication and technology
subject: Telecommunication--Technological innovations
subject: Postal service
subject: Political science
subject: FOS: Political science

description: This essay provides a historical perspective on the process of innovation in American communications. It is drawn from a larger, ongoing study of communications policy in the post-office department, Western Union, and the Bell System in the formative era that stretched from the adoption of the Constitution to World War I. This period holds special interest for students of innovation, since it witnessed the establishment of a modern postal system as well as the commercialization of the electric telegraph and telephone—three of the most notable improvements in communications technology during the past two hundred years.