cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Parallelized Robust Distributed Model Predictive Control in the Presence of Coupled State Constraints
Creators: name: Wiltz, Adrian
name: Chen, Fei
name: Dimarogonas, Dimos V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we present a robust distributed model predictive control (DMPC) scheme for dynamically decoupled nonlinear systems which are subject to state constraints, coupled state constraints and input constraints. In the proposed control scheme, all subsystems solve their local optimization problem in parallel and neighbor-to-neighbor communication suffices. The approach relies on consistency constraints which define a neighborhood around each subsystem's reference trajectory where the state of the subsystem is guaranteed to stay in. Reference trajectories and consistency constraints are known to neighboring subsystems. Contrary to other relevant approaches, the reference trajectories are improved consecutively. The presented approach allows the formulation of convex optimization problems for systems with linear dynamics even in the presence of non-convex state constraints. Additionally, we employ tubes in order to ensure the controller's robustness against bounded uncertainties. In the end, we briefly comment on an iterative extension of the DMPC scheme. The effectiveness of the proposed DMPC scheme and its iterative extension are demonstrated with simulations.
description: 16 pages, 5 figures, preprint to be published in Automatica
Entanglement Witnesses Based on Symmetric Informationally Complete Measurements
Creators: name: Li, Tao
name: Lai, Le-Min
name: Liang, Deng-Feng
name: Fei, Shao-Ming
name: Wang, Zhi-Xi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study entanglement witness and present a construction of entanglement witnesses in terms of the symmetric informationally complete measurements (SIC-POVM). The capability of our witness is shown by some examples and it can be found this witness detects more entanglement than previous separability method given also by SIC-POVM. What's more, comparing with the dimension dependence of SIC-POVM, we also give the entanglement witnesses can be always constructed from general symmetric informationally complete measurements (GSIC-POVM).
Interacting electrons in the Aharonov-Bohm interferometer
Creators: name: Ihnatsenka, S.
name: Zozoulenko, I. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a microscopic picture of quantum transport in the Aharonov-Bohm (AB) interferometer taking into account electron interaction within the Hartree and the spin density functional theory approximations. We discuss the structure of the edge states for different number of the Landau levels in the leads, their coupling to the states in the central island and the formation of compressible/incompressible strips in the interferometer. Based on our results we discuss the existing theories of the unexpected AB periodicity, which essentially rely on specific phenomenological models of the states and their coupling in the interferometer. Our work provides a basis for such the theories, giving a detailed microscopic description of the propagating states and the global electrostatics in the system at hand.
description: 10 pages, 7 figures
Collections documentation : The art of Mrs. Gertie Tom
Creators: name: Cronin, Allison Elaine
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines the documentation process of a collection of contemporary objects made by a Northern Tutchone artist, Mrs. Gertie Tom, from Whitehorse, Yukon Territory. The beaded moosehide objects were purchased by the University of British Columbia Museum of Anthropology between 1992 and 1994, and include a vest, a 'shell' belt, gloves, moccasins, mittens, and a hat. The documentation process included Mrs. Tom documenting her objects in her own words. This thesis investigates the steps, cost, and time involved in documenting the six objects. It also explores how object documentation fits within museological debates on access, collections management, and current museology. Museums are facing an increasingly changing environment. Originating people are requesting changes in the relationship between museums and objects. The cost of caring for museum collections is increasing and many objects within these collections are inadequately documented and consequently of little value for research. At the same time, museums continue to collect. In addition, many scholars think the future of museums is in current and controversial ideas rather than objects. The single, often paternalistic, museum message is being challenged, and people are arguing for museums to exhibit a variety of voices and opinions. This thesis answers the questions: What does this project contribute to issues of collections access, especially with reference to First Nations material? What costs are involved in documenting museum collections? Does documentation improve information available on collections? Does it allow people, not just objects, to become an integral part of museums and to bring new ideas and issues to museums? Although the documentation process required a commitment of time and money, my research confirms that having people document their own objects is beneficial in reference to current museological issues. The information provided by Mrs. Tom not only documents her objects but offers insight into other aspects of her life and Northern Tutchone culture in general. The documentation, in addition to providing answers to questions such as provenience, use, and materials, reveals ideas and interpretations of the objects from Mrs. Tom's point of view. Having Mrs. Tom document her objects in her own words means she, rather than the museum, is the authoritative voice. In an effort to bring a balance between objects and ideas, museums should only acquire objects they can afford to document.
Training & Development Program and Its Importance to The Company and Worker
Creators: name: Abdullah M. M. A.
name: Amgad S. D. Khaled
name: Mohsen A. A. Moqbel
name: Abdulmalek M. M. Saeed
name: Ali Thabit
Publisher: name: gjrpublication
Year: 2024

description: This paper seeks to provide a quantitative analysis on the executive training and growth system and its advantages. This paper explores workforce recruitment and improvement plan processes and components and also discusses the beneficial implications for workers and organizations. In modern global markets, companies find it hard to remain competitive. For organizations which benefit from a competitive advantage, the significance of the worker development program is increasing. Workers are regarded as an organization raw material and worker achievement or failure is relayed to job performance. Organizations also fund significant sums of training and development programs for workers. It also allows businesses to concentrate on awareness, experience and abilities of their staff in the training program. Experts and analysts address the effect on both the employee and company of the creation program. The research presented here is a comprehensive literature review on the main aspects of the workplace development programme.
Parametrization by Horizontal Constraints in the Study of Algorithmic Properties of $\mathbb{Z}^2$-Subshift of Finite Type
Creators: name: Esnay, Solène J.
name: Sablik, Mathieu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The non-emptiness, called the Domino Problem, and the characterization of the possible entropies of $\mathbb{Z}^2$-subshifts of finite type are standard problems of symbolic dynamics. In this article we study these questions with horizontal constraints fixed beforehand as a parameter. We determine for which horizontal constraints the Domino Problem is undecidable and when all right-recursively enumerable numbers can be obtained as entropy, with two approaches: either the additional local rules added to the horizontal constraints can be of any shape, or they can only be vertical rules.
การปนเปื้อนแบคทีเรียที่ดื้อยาปฏิชีวนะจากส้วมที่ตั้งในเขตธนบุรี กรุงเทพมหานคร
Creators: name: กิจจา จิตรภิรมย์
Publisher: name: กองนวัตกรรมและวิจัย กรมควบคุมโรค
Year: 2561
Subjects: ส้วม
การปนเปื้อนแบคทีเรียดื้อยาปฏิชีวนะ

description: วารสารควบคุมโรค, 44, 1, 38-49
Enriques surfaces of non-degeneracy 3
Creators: name: Martin, Gebhard
name: Mezzedimi, Giacomo
name: Veniani, Davide Cesare
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We classify all non-extendable 3-sequences of half-fibers on Enriques surfaces. If the characteristic is different from 2, we prove in particular that every Enriques surface admits a 4-sequence, which implies that every Enriques surface is the minimal desingularization of an Enriques sextic, and that every Enriques surface is birational to a Castelnuovo quintic.
description: 24 pages, v2: minor improvements and corrections
Educational Question Generation of Children Storybooks via Question Type Distribution Learning and Event-Centric Summarization
Creators: name: Zhao, Zhenjie
name: Hou, Yufang
name: Wang, Dakuo
name: Yu, Mo
name: Liu, Chengzhong
name: Ma, Xiaojuan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Generating educational questions of fairytales or storybooks is vital for improving children's literacy ability. However, it is challenging to generate questions that capture the interesting aspects of a fairytale story with educational meaningfulness. In this paper, we propose a novel question generation method that first learns the question type distribution of an input story paragraph, and then summarizes salient events which can be used to generate high-cognitive-demand questions. To train the event-centric summarizer, we finetune a pre-trained transformer-based sequence-to-sequence model using silver samples composed by educational question-answer pairs. On a newly proposed educational question answering dataset FairytaleQA, we show good performance of our method on both automatic and human evaluation metrics. Our work indicates the necessity of decomposing question type distribution learning and event-centric summary generation for educational question generation.
Gaussian model selection with an unknown variance
Creators: name: Baraud, Yannick
name: Giraud, Christophe
name: Huet, Sylvie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G08 (Primary)

description: Let $Y$ be a Gaussian vector whose components are independent with a common unknown variance. We consider the problem of estimating the mean $μ$ of $Y$ by model selection. More precisely, we start with a collection $\mathcal{S}=\{S_m,m\in\mathcal{M}\}$ of linear subspaces of $\mathbb{R}^n$ and associate to each of these the least-squares estimator of $μ$ on $S_m$. Then, we use a data driven penalized criterion in order to select one estimator among these. Our first objective is to analyze the performance of estimators associated to classical criteria such as FPE, AIC, BIC and AMDL. Our second objective is to propose better penalties that are versatile enough to take into account both the complexity of the collection $\mathcal{S}$ and the sample size. Then we apply those to solve various statistical problems such as variable selection, change point detections and signal estimation among others. Our results are based on a nonasymptotic risk bound with respect to the Euclidean loss for the selected estimator. Some analogous results are also established for the Kullback loss.
description: Published in at http://dx.doi.org/10.1214/07-AOS573 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
การจัดทำแผนยุทธศาสตร์เตรียมความพร้อมป้องกันและแก้ไขป้ญหาโรคติดต่ออุบัติใหม่แห่งชาติ (พ.ศ. 2560-2564)
Creators: name: วิรงรอง แก้วสมบูรณ์
Publisher: name: กองนวัตกรรมและวิจัย กรมควบคุมโรค
Year: 2561
Subjects: แผนยุทธศาสตร์
การเตรียมความพร้อม
โรคติดต่ออุบัติใหม่

description: วารสารควบคุมโรค, 44, 1, 50-62
Finding Signs of Life on Earth-like Planets: High-resolution Transmission Spectra of Earth through time around FGKM stars
Creators: name: Kaltenegger, L.
name: Lin, Z.
name: Rugheimer, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The search for life in the universe mainly uses modern Earth as a template. However, we know that Earth's atmospheric composition changed significantly through its geological evolution. Recent discoveries show that transiting, potentially Earth-like exoplanets orbit a wide range of host stars, which strongly influence their atmospheric composition and remotely detectable spectra. Thus, a database for transiting terrestrial exoplanet around different host stars at different geological times is a crucial missing ingredient to support observational searches for signs of life in exoplanet atmospheres. Here, we present the first high-resolution transmission spectra database for Earth-like planets, orbiting a wide range of host stars, throughout four representative stages of Earth's history. These correspond to a prebiotic high CO2-world - about 3.9 billion years ago in Earth's history - and three epochs through the rise of oxygen from 0.2% to modern atmospheric levels of 21%. We demonstrate that the spectral biosignature pairs O2 + CH4 and O3 + CH4 in the atmosphere of a transiting Earth-like planet would show a remote observer that a biosphere exists for oxygen concentrations of about 1% modern Earth's - corresponding to about 1 to 2 billion years ago in Earth's history - for all host stars. The full model and high-resolution transmission spectra database, covering 0.4 to 20microns, for transiting exoplanets - from young prebiotic worlds to modern Earths-analogs - orbiting a wide range of host stars is available online. It can be used as a tool to plan and optimize our observation strategy, train retrieval methods, and interpret upcoming observations with ground- and space-based telescopes.
description: 9 pages, accepted in ApJ
C stars in the outer spheroid of NGC 6822
Creators: name: Demers, S.
name: Battinelli, P.
name: Artigau, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: From a 2 x 2 degree survey of NGC 6822 we have previously established that this Local Group dwarf irregular galaxy possesses a huge spheroid having more than one degree in length. This spheroid is in rotation but its rotation curve is known only within ~15' from the center. It is therefore critical to identify bright stars belonging to the spheroid to characterize, as far as possible, its outer kinematics. We use the new wide field near infrared imager CPAPIR, operated by the SMARTS consortium, to acquire J, Ks images of two 34.8' x 34.8' areas in the outer spheroid to search for C stars. The colour diagram of the fields allows the identification of 192 C stars candidates but a study of the FWHM of the images permits the rejection of numerous non-stellar objects with colours similar to C stars. We are left with 75 new C stars, their mean Ks magnitude and mean colour are similar to the bulk of known NGC 6822 C stars. This outer spheroid survey confirms that the intermediate-age AGB stars are a major contributor to the stellar populations of the spheroid. The discovery of some 50 C stars well beyond the limit of the previously known rotation curve calls for a promising spectroscopic follow-up to a major axis distance of 40'.
description: 13 pages
MPEC 2024-A08 : 2023 YV1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 YV1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Multiscalar $B-L$ extension based on $S_4$ flavor symmetry for neutrino mass and mixing
Creators: name: Vien, V. V.
name: Long, H. N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A multiscalar and nonrenormalizable $B-L$ extension of the standard model (SM) with $S_4$ symmetry which successfully explains the recent observed neutrino oscillation data is proposed. The tiny neutrino masses and their hierarchies are generated via the type-I seesaw mechanism. The model reproduces the recent experiments of neutrino mixing angles and Dirac CP violating phase in which the atmospheric angle $(θ_{23})$ and the reactor angle $(θ_{13})$ get the best-fit values while the solar angle $(θ_{12})$ and Dirac CP violating phase ($δ$) belong to $3\, \si $ range of the best-fit value for normal hierarchy (NH). For inverted hierarchy (IH), $θ_{13}$ gets the best-fit value and $θ_{23}$ together with $\de $ belongs to $1\, \si $ range while $θ_{12}$ belongs to $3\, \si $ range of the best-fit value. The effective neutrino masses are predicted to be $\langle m_{ee}\rangle=6.81 \,\, \mbox{meV}$ for NH and $\langle m_{ee}\rangle=48.48\,\, \mbox{meV}$ for IH being in good agreement with the most recent experimental data.
description: 20 pages, 9 figures, 2 tables
Tropical invariants for binary quintics and reduction types of Picard curves
Creators: name: Helminck, Paul Alexander
name: Maazouz, Yassine El
name: Kaya, Enis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14T20, 13A50, 11G20

description: We express the reduction types of Picard curves in terms of tropical invariants associated to binary quintics. We also give a general framework for tropical invariants associated to group actions on arbitrary varieties. The problem of finding tropical invariants for binary forms fits in this general framework by mapping the space of binary forms to symmetrized versions of the Deligne-Mumford compactification $\overline{M}_{0,n}$.
description: 25 pages
Predictive model for dark matter, dark energy, neutrino masses and leptogenesis at the TeV scale
Creators: name: Sahu, Narendra
name: Sarkar, Utpal
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a new mechanism of TeV scale leptogenesis where the chemical potential of right-handed electron is passed on to the $B-L$ asymmetry of the Universe in the presence of sphalerons. The model has the virtue that the origin of neutrino masses are independent of the scale of leptogenesis. As a result, the model could be extended to explain {\it dark matter, dark energy, neutrino masses and leptogenesis at the TeV scale}. The most attractive feature of this model is that it predicts a few hundred GeV triplet Higgs scalar that can be tested at LHC or ILC.
description: 5 pages (revtex), double column, 2 eps figures, journal version. To appear in Phys. ReV. D
Experimental signature of phonon-mediated spin relaxation
Creators: name: Meunier, T.
name: Vink, I. T.
name: van Beveren, L. H. Willems
name: Tielrooij, K-J.
name: Hanson, R.
name: Koppens, F. H. L.
name: Tranitz, H. P.
name: Wegscheider, W.
name: Kouwenhoven, L. P.
name: Vandersypen, L. M. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We observe an experimental signature of the role of the phonons in spin relaxation between triplet and singlet states in a two-electron quantum dot. Using both the external magnetic field and the electrostatic confinement potential, we change the singlet-triplet energy splitting from 1.3 meV to zero and observe that the spin relaxation time depends non-monotonously on the energy splitting. A simple theoretical model is derived to capture the underlying physical mechanism. The present experiment confirms that spin-flip energy is dissipated in the phonon bath.
description: 5 pages, 4 figures
The Automorphism Group of a Finite p-Group is Almost Always a p-Group
Creators: name: Helleloid, Geir T.
name: Martin, Ursula
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 20E36 (Primary), 05A16 (Secondary)

description: Many common finite p-groups admit automorphisms of order coprime to p, and when p is odd, it is reasonably difficult to find finite p-groups whose automorphism group is a p-group. Yet the goal of this paper is to prove that the automorphism group of a finite p-group is almost always a p-group. The asymptotics in our theorem involve fixing any two of the following parameters and letting the third go to infinity: the lower p-length, the number of generators, and p. The proof of this theorem depends on a variety of topics: counting subgroups of a p-group; analyzing the lower p-series of a free group via its connection with the free Lie algebra; counting submodules of a module via Hall polynomials; and using numerical estimates on Gaussian coefficients.
description: 38 pages, to appear in the Journal of Algebra; improved references, changes in terminology
Superconductivity in iron-based F-doped layered quaternary compound Nd[O1-xFx]FeAs
Creators: name: Ren*, Zhi-An
name: Yang, Jie
name: Lu, Wei
name: Yi, Wei
name: Shen, Xiao-Li
name: Li, Zheng-Cai
name: Che, Guang-Can
name: Dong, Xiao-Li
name: Sun, Li-Ling
name: Zhou, Fang
name: Zhao*, Zhong-Xian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The recently discovered quaternary arsenide oxide superconductor La[O1-xFx]FeAs with the superconducting critical transition temperature (Tc) of 26 K [1], has been quickly expanded to another high-Tc superconducting system beyond copper oxides by the replacement of La with other rare earth elements, such as Sm, Ce, and Pr etc. [2-4], and the Pr[O1-xFx]FeAs has become to be the first non-cuprate superconductor that holding a Tc above 50 K. All these arsenide (including phosphide) superconductors formed in a same tetragonal layered structure with the space group P4/nmm which has an alternant stacked Fe-As layer and RO (R = rare earth metals) layer. Here we report the discovery of another superconductor in this system, the neodymium-arsenide Nd[O1-xFx]FeAs with an resistivity onset Tc of 51.9 K, which is the second non-cuprate compound that superconducts above 50 K.
UN'UGUAGLIANZA INSIEMISTICA RELATIVA ALLA FUNZIONE PSI CICLICA SPECIFICA
Creators: name: Bossi, Riccardo Jacopo
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 490401
subject: Algebra and number theory

description: In questo articolo esporrò un'uguaglianza relativa alla funzione psi ciclica specifica, introdotta in [2], che uguaglierà questa alla cardinalità di un certo insieme.
Bosonisation and Parastatistics: An Example and an Alternative Approach
Creators: name: Kanakoglou, K.
name: Daskaloyannis, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 16W55, 16W50, 16W30, 81R50

description: Definitions of the parastatistics algebras and known results on their Lie (super)algebraic structure are reviewed. The notion of super-Hopf algebra is discussed. The bosonisation technique for switching a Hopf algebra in a braided category ${}_{H}\mathcal{M}$ ($H$: a quasitriangular Hopf algebra) into an ordinary Hopf algebra is presented and it is applied in the case of the parabosonic algebra. A bosonisation-like construction is also introduced for the same algebra and the differences are discussed.
description: 13 pages, Contribution to "AGMF: Algebra, Geometry, and Mathematical Physics", Baltic-Nordic Workshop: Lund, 12-14 October, 2006
Holomorphic vector fields with a barycentric condition
Creators: name: Cerveau, Dominique
name: Déserti, Julie
name: Neto, Alcides Lins
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 32A10, 32M35, 34M45

description: We study the $p$-tuples of holomorphic vector fields $(X_1,X_2,\ldots,X_p)$ satisfying the barycentric property $\displaystyle\sum_k\exp tX_k=p\cdot\mathrm{id}$, where $\exp tX$ denotes the flow of $X$.
Transition to Quark Matter and long Gamma Ray Bursts
Creators: name: Drago, Alessandro
name: Pagliara, Giuseppe
name: Parenti, Irene
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The energy released by the inner engine of GRBs can originate from structural readjustments inside a compact star. In particular, the formation of deconfined quark matter can liberate enough energy to power the burst. We show that the burning of a neutron star into a quark star likely proceeds as a deflagration and not as a detonation. In that way no strong baryon contamination is produced near the surface of the star. It is tempting to associate the temporal structures observed in the light curves with specific processes taking place inside the compact star. The so-called quiescent times, during which no signal is emitted in the highest energy band, correspond to pauses during the processes of readjustment. If the quark (or hybrid) star formed after these transformations is strongly magnetized and rotates rapidly, a prolonged gamma emission can be produced, as proposed by Usov years ago. This can explain the quasi-plateau observed by Swift in several GRBs.
description: 7 pages, 4 figures, Proceedings of "Swift and GRBs: Unveiling the Relativisitc Universe", Venice, 5-9 June 2006
ALMA Lensing Cluster Survey: a strongly lensed multiply imaged dusty system at $z\geq$6
Creators: name: Laporte, N.
name: Zitrin, A.
name: Ellis, R. S.
name: Fujimoto, S.
name: Brammer, G.
name: Richard, J.
name: Oguri, M.
name: Caminha, G. B.
name: Kohno, K.
name: Yoshimura, Y.
name: Ao, Y.
name: Bauer, F. E.
name: Caputi, K.
name: Egami, E.
name: Espada, D.
name: González-López, J.
name: Hatsukade, B.
name: Knudsen, K. K.
name: Lee, M. M.
name: Magdis, G.
name: Ouchi, M.
name: Valentino, F.
name: Wang, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the discovery of an intrinsically faint, quintuply-imaged, dusty galaxy MACS0600-z6 at a redshift $z=$6.07 viewed through the cluster MACSJ0600.1-2008 ($z$=0.46). A $\simeq4σ$ dust detection is seen at 1.2mm as part of the ALMA Lensing Cluster Survey (ALCS), an on-going ALMA Large program, and the redshift is secured via [C II] 158 $μ$m emission described in a companion paper. In addition, spectroscopic follow-up with GMOS/Gemini-North shows a break in the galaxy's spectrum, consistent with the Lyman break at that redshift. We use a detailed mass model of the cluster and infer a magnification $μ\gtrsim$30 for the most magnified image of this galaxy, which provides an unprecedented opportunity to probe the physical properties of a sub-luminous galaxy at the end of cosmic reionisation. Based on the spectral energy distribution, we infer lensing-corrected stellar and dust masses of $\rm{2.9^{+11.5}_{-2.3}\times10^9}$ and $\rm{4.8^{+4.5}_{-3.4}\times10^6}$ $\rm{M_{\odot}}$ respectively, a star formation rate of $\rm{9.7^{+22.0}_{-6.6} M_{\odot} yr^{-1}}$, an intrinsic size of $\rm{0.54^{+0.26}_{-0.14}}$ kpc, and a luminosity-weighted age of 200$\pm$100 Myr. Strikingly, the dust production rate in this relatively young galaxy appears to be larger than that observed for equivalent, lower redshift sources. We discuss if this implies that early supernovae are more efficient dust producers and the consequences for using dust mass as a probe of earlier star formation.
description: submitted to MNRAS, revised version after including referee's comments
Eigenvalue problems for the complex PT-symmetric potential V(x)= igx
Creators: name: Ahmed, Zafar
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The spectrum of complex PT-symmetric potential, $V(x)=igx$, is known to be null. We enclose this potential in a hard-box: $V(|x| \ge 1) =\infty $ and in a soft-box: $V(|x|\ge 1)=0$. In the former case, we find real discrete spectrum and the exceptional points of the potential. The asymptotic eigenvalues behave as $E_n \sim n^2.$ The solvable purely imaginary PT-symmetric potentials vanishing asymptotically known so far do not have real discrete spectrum. Our solvable soft-box potential possesses two real negative discrete eigenvalues if $|g|
description: no figures, 9 pages
Anti-pre-Lie algebras, Novikov algebras and commutative 2-cocycles on Lie algebras
Creators: name: Liu, Guilai
name: Bai, Chengming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17A36, 17A40, 17B10, 17B40, 17B60, 17B63, 17D25

description: Anti-pre-Lie algebras, Novikov algebras and commutative 2-cocycles on Lie algebrasWe introduce the notion of anti-pre-Lie algebras as the underlying algebraic structures of nondegenerate commutative 2-cocycles which are the "symmetric" version of symplectic forms on Lie algebras. They can be characterized as a class of Lie-admissible algebras whose negative left multiplication operators make representations of the commutator Lie algebras. We observe that there is a clear analogy between anti-pre-Lie algebras and pre-Lie algebras by comparing them in terms of several aspects. Furthermore, it is unexpected that a subclass of anti-pre-Lie algebras, namely admissible Novikov algebras, correspond to Novikov algebras in terms of $q$-algebras. Consequently, there is a construction of admissible Novikov algebras from commutative associative algebras with derivations or more generally, admissible pairs. The correspondence extends to the level of Poisson type structures, leading to the introduction of the notions of anti-pre-Lie Poisson algebras and admissible Novikov-Poisson algebras, whereas the latter correspond to Novikov-Poisson algebras.
description: 29 pages
A Szegő Limit Theorem Related to the Hilbert Matrix
Creators: name: Otte, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Szegő limit theorem by Fedele and Gebert for matrices of the type identity minus Hankel matrix is proved for the special case $1-\fracβπH_{N,α}$ where $H_{N,α}$ is the $N\times N$-Hilbert matrix, $α\geq\frac{1}{2}$, and $β\in\mathbf{C}$. The proof uses operator theoretic tools and a reduction to the classical Kac--Akhiezer theorem for the Carleman operator. Thereby, the validity of the theorem for this special Hankel matrix can be extended from $|β|<1$ to $β\in\mathbf{C}\setminus ]1,\infty[$. The bound on the correction term is improved to $O(1)$ instead of $o(\ln(N))$ for $β\in\mathbf{C}\setminus [1,\infty[$. The limit case $β=1$ is derived directly from the asymptotics for general $β$.
Efficient three-body calculations with a two-body mapped grid method
Creators: name: Secker, T.
name: Li, J. -L.
name: Mestrom, P. M. A.
name: Kokkelmans, S. J. J. M. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the prospects of combining a standard momentum space approach for ultracold three-body scattering with efficient coordinate space schemes to solve the underlying two-body problem. In many of those schemes the two-body problem is numerically restricted up to a finite interparticle distance $r_\mathrm{b}$. We analyze effects of this two-body restriction on the two- and three-body level using pairwise square-well potentials that allow for analytic two-body solutions and more realistic Lennard-Jones van der Waals potentials to model atomic interactions. We find that the two-body $t$-operator converges exponentially in $r_\mathrm{b}$ for the square-well interaction. Setting $r_\mathrm{b}$ to 2000 times the range of the interaction, the three-body recombination rate can be determined accurately up to a few percent when the magnitude of the scattering length is small compared to $r_\mathrm{b}$, while the position of the lowest Efimov features is accurate up to the percent level. In addition we find that with the introduction of a momentum cut-off, it is possible to determine the three-body parameter in good approximation even for deep van der Waals potentials.
Anti-dendriform algebras, new splitting of operations and Novikov type algebras
Creators: name: Gao, Dongfang
name: Liu, Guilai
name: Bai, Chengming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Rings and Algebras (math.RA)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17A36, 17A40, 17B10, 17B40, 17B60, 17B63, 17D25

description: We introduce the notion of anti-dendriform algebras as a new approach of splitting the associativity. They are characterized as the algebras with two operations whose sum is associative and the negative left and right multiplication operators compose the bimodules of the sum associative algebras, justifying the notion due to the comparison with the corresponding characterization of dendriform algebras. The notions of anti-$\mathcal O$-operators and anti-Rota-Baxter operators on associative algebras are introduced to interpret anti-dendriform algebras. In particular, there are compatible anti-dendriform algebra structures on associative algebras with nondegenerate commutative Connes cocycles. There is an important observation that there are correspondences between certain subclasses of dendriform and anti-dendriform algebras in terms of $q$-algebras. As a direct consequence, we give the notion of Novikov-type dendriform algebras as an analogue of Novikov algebras for dendriform algebras, whose relationship with Novikov algebras is consistent with the one between dendriform and pre-Lie algebras. Finally we extend to provide a general framework of introducing the notions of analogues of anti-dendriform algebras, which interprets a new splitting of operations.
description: 25 pages
Evidence of unrelaxed IGM around IC1262
Creators: name: Trinchieri, G.
name: Breitschwerdt, D.
name: Pietsch, W.
name: Sulentic, J.
name: Wolter, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: AIMS: A peculiar morphology of the hot gas was discovered at the center of IC1262 with the ROSAT HRI. Sensitive Chandra and XMM-Newton data were requested to investigate the characteristics of this structure to understand its nature. METHODS: We have exploited the high resolution and sensitivity of Chandra's ACIS-S to investigate the peculiar morphology and spectral characteristics of hot gas in the group around IC1262. XMM-Newton data are only partially usable due to very heavy high background contamination, but they are useful to confirm and strengthen the results from Chandra. RESULTS: The Chandra data show a quite dramatic view of the \object{IC1262} system: a sharp discontinuity east of the central galaxy, with steep drops and a relatively narrow feature over 100 kpc long, plus an arc/loop to the N, are all indicative of a turmoil in the high energy component. Their morphologies could suggest them to be tracers of shocked material caused either by peculiar motions in the system or by a recent merger process, but the spectral characteristics indicate that the structure is cooler than its surroundings. The lack of evidence of significant structures in the velocity distribution of the group members and the estimated scale of the phenomenon make the interpretation of its physical nature challenging. We review a few possible interpretations, in light of similar phenomena observed in clusters and groups. The ram pressure stripping of a bright spiral galaxy, now near the center of the group, is a promising interpretation for most of the features observed. The relation with the radio activity requires a better sampling of the radio parameters that can only be achieved with deeper and higher resolution observations.
description: Accepted for pubblication in Astronomy & Astrophysics. Figs 1, 2, 3 and 9-12 are given as JPEG files due to the restrictions on space available on astro-ph
The Fraser Glaciation in the Cascade Mountains, southwestern British Columbia
Creators: name: Waddington, Betsy Anne
Publisher: name: University of British Columbia
Year: 2009

description: The objective of this study is to reconstruct the history of glaciation from the start of Fraser (Late Wisconsinan) Glaciation to the end of deglaciation, for three areas in the Cascade Mountains. The Cascade Mountains are located between the Coast Mountains and the Interior Plateau in southwestern British Columbia. The Coast Mountains were glaciated by mountain glaciation followed by frontal retreat, whereas the Interior Plateau underwent ice sheet glaciation followed by downwasting and stagnation. The Cascades were supposed to have undergone a style of glaciation transitional between these two. Terrain mapping on air photographs followed by field checking was used to locate surficial materials and landforms indicative of glaciation style and pattern. All three study areas were glaciated by mixed mountain and ice sheet glaciation. At the start of Fraser Glaciation, alpine and valley glaciers formed around higher summits as occurred in the Coast Mountains. At the glacial maximum the entire area was covered by the Cordilleran Ice Sheet. Deglaciation was largely by continuous downvalley retreat of active glaciers, contrasting with downwasting and stagnation in the Interior Plateau, and frontal retreat in the Coast Mountains. The scarcity of fresh moraines in the cirques suggests that, unlike in the Coast Mountains, most cirque glaciers were not active at the end of glaciation. Only the highest north facing cirques remained above the local snowline throughout deglaciation and, as a result, glaciers in these valleys remained active and retreated up valley. The pattern of glaciation in the Cascade Mountains was similar to that of other areas which underwent mixed mountain and ice sheet glaciation, such as the Presidential Range in New Hampshire, the Green Mountains in Vermont, mountain ranges in west central Maine and the Insular Mountains on Vancouver Island. However, deglaciation in al l areas was complex and depended strongly on local conditions. For this reason local patterns cannot be predicted easily on the basis of glaciation style. The value of an understanding of glaciation style to improve the accuracy of terrain mapping was also investigated. It was found that the model developed for the Cascade Mountains was of some use in predicting the presence of fine-textured material in valley bottoms and for the prediction of glaciofluvial material overlying till . However fine-textured sediments were not found in al l valleys which were predicted to contain them. The model appears to be most useful as an indicator of where to concentrate field checking in order to locate fine-textured sediments.
ผลการปฏิบัติตามนโยบายการรักษาวัณโรค แบบพักรักษาตัวในโรงพยาบาล สำหรับผู้ป่วยวัณโรคเสมหะพบเชื้อ : กรณีศึกษาพื้นที่สาธารณสุขเขต 18
Creators: name: ชัยรัตน์ เตชะไตรศักดิ์
Publisher: name: กองนวัตกรรมและวิจัย กรมควบคุมโรค
Year: 2561
Subjects: นโยบายการรักษาวัณโรคแบบพักรักษาตัวในโรงพยาบาล
ความรู้ ทัศนคติ การปฏิบัติตัว
อัตราเสมหะกลับเป็นลบ
พื้นที่สาธารณสุขเขต 18
ประเทศไทย

description: วารสารควบคุมโรค, 44, 1, 63-76
The Construction of the BESIII Experiment
Creators: name: Wang, Yi-Fang
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: BESIII is a high precision, general purpose detector for the high luminosity $e^+e^-$ collider, BEPCII, running at the tau-charm energy region. Its design and current status of construction is presented.
description: 10 pages, 12 figures
High latitude gas in the Beta Pictoris system. A possible origin related to Falling Evaporating Bodies
Creators: name: Beust, Hervé
name: Valiron, Pierre
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The presence of off-plane Ca II ions in the Beta Pictoris disk, and the non-detection of off-plane Na I atoms, can be explained as a consequence of the evaporation process of Falling Evaporating Bodies (FEBs). In the star-grazing regime, the FEBs are subject to inclination oscillations up to 30 - 40 degrees that causes most metallic species released by sublimation to move off plane The ions are be stopped at about 100 AU from the star. We show that collisions with a neutral medium can stop the ions. The required H I column density is reduced to 10^17 cm^-2, one order of magnitude below present detection limits. We also investigate the possibility that the ions are slowed down magnetically. While the sole action of a magnetic field of the order of 1 microGauss is not effective, the combined effect of magnetic and collisional deceleration processes lead to an additional lowering of the required H I column density.
description: 17 pages
Cone size dependence of jet suppression in heavy-ion collisions
Creators: name: Mehtar-Tani, Yacine
name: Pablos, Daniel
name: Tywoniuk, Konrad
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The strong suppression of high-$p_T$ jets in heavy ion collisions is a result of elastic and inelastic energy loss suffered by the jet multi-prong collection of color charges that are resolved by medium interactions. Hence, quenching effects depend on the fluctuations of the jet substructure that are probed by the cone size dependence of the spectrum. In this letter, we present the first complete, analytic calculation of the inclusive $R$-dependent jet spectrum in PbPb collisions at LHC energies, including resummation of energy loss effects from hard, vacuum-like emissions occurring in the medium and modeling of soft energy flow and recovery at the jet cone. Both the geometry of the collision and the local medium properties, such as the temperature and fluid velocity, are given by a hydrodynamic evolution of the medium, leaving only the coupling constant in the medium as a free parameter. The calculation yields a good description of the centrality and $p_T$ dependence of jet suppression for $R=0.4$ together with a mild cone size dependence, which is in agreement with recent experimental results. Gauging the theoretical uncertainties, we find that the largest sensitivity resides in the leading logarithmic approximation of the phase space of resolved splittings, which can be improved systematically, while non-perturbative modeling of the soft-gluon sector is of relatively minor importance up to large cone sizes.
description: 10 pages, 3 figures
Anosov automorphisms on certain classes of nilmanifolds
Creators: name: Mainkar, Meera G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Dynamical Systems (math.DS)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 37D20;22E25

description: We give a necessary and sufficient condition for $k$-step nilmanifolds associated with graphs $(k \geq 3)$ to admit Anosov automorphisms. We also prove nonexistence of Anosov automorphisms on certain classes of 2-step and 3-step nilmanifolds.
description: 16 pages
Freedom in the many-worlds interpretation
Creators: name: Stoica, Ovidiu Cristinel
Publisher: name: arXiv
Year: 2022
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I analyze the possibility of free-will in the many-worlds interpretation (MWI), arguing for their compatibility. I use as a starting point Nicolas Gisin's "The Multiverse Pandemic" (preprint arXiv:2210.05377, after Gisin, N., "L'épidémie du multivers", in "Le Plus Grand des Hasards", Belin, Paris, 2010), in which he makes an interesting case that MWI is contradicted by our hard to deny free-will. The counts he raised are:
 (1) MWI is deterministic, forcing choices on us,
 (2) in MWI all our possible choices happen, and
 (3) MWI limits creativity, because everything is entangled with everything else.
 I argue that each of these features of MWI is in fact compatible with more freedom than it may seem. In particular, MWI allows compatibilist free-will, but also free-will very much like the libertarian free-will defined by Chisholm. I argue that the position that alternative choices exist as possibilities does not make sense from a physical point of view, but MWI offers a physical ground for alternatives.
description: To appear in Foundations of Physics