cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Applicability of layered sine-Gordon models to layered superconductors: II. The case of magnetic coupling
Creators: name: Nandori, I.
name: Vad, K.
name: Meszaros, S.
name: Jentschura, U. D.
name: Nagy, S.
name: Sailer, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper, we propose a quantum field theoretical renormalization group approach to the vortex dynamics of magnetically coupled layered superconductors, to supplement our earlier investigations on the Josephson-coupled case. We construct a two-dimensional multi-layer sine-Gordon type model which we map onto a gas of topological excitations. With a special choice of the mass matrix for our field theoretical model, vortex dominated properties of magnetically coupled layered superconductors can be described. The well known interaction potentials of fractional flux vortices are consistently obtained from our field-theoretical analysis, and the physical parameters (vortex fugacity and temperature parameter) are also identified. We analyse the phase structure of the multi-layer sine--Gordon model by a differential renormalization group method for the magnetically coupled case from first principles. The dependence of the transition temperature on the number of layers is found to be in agreement with known results based on other methods.
description: 7 pages, 1 figure, published in J. Phys.: Condens. Matter
Correlated projection operator approach to non-Markovian dynamics in spin baths
Creators: name: Fischer, Jan
name: Breuer, Heinz-Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The dynamics of an open quantum system is usually studied by performing a weak-coupling and weak-correlation expansion in the system-bath interaction. For systems exhibiting strong couplings and highly non-Markovian behavior this approach is not justified. We apply a recently proposed correlated projection superoperator technique to the model of a central spin coupled to a spin bath via full Heisenberg interaction. Analytical solutions to both the Nakajima-Zwanzig and the time-convolutionless master equation are determined and compared with the results of the exact solution. The correlated projection operator technique significantly improves the standard methods and can be applied to many physical problems such as the hyperfine interaction in a quantum dot.
Gravitino Dark Matter from Inflaton Decay
Creators: name: Takahashi, Fuminobu
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss a scenario that gravitinos produced non-thermally by an inflaton decay constitute dark matter in the present universe. We find that this scenario is realized for wide ranges of the inflaton mass and the vacuum expectation value. What is intriguing about this scenario is that the gravitino dark matter can have a relatively large free streaming length at matter-radiation equality, which can be probed by future observation on QSO-galaxy strong lens system.
description: 16 pages, 3 figures. v2: references and figures added
THE NEED FOR A SYSTEMATIC APPROACH TO THE FORMATION OF FINANCIAL POLICY IN ENTERPRISES
Creators: name: Khamdamov, Sardor
Publisher: name: Zenodo
Year: 2023

description: The main characteristic of financial relations is that they have a distributive nature, and accordingly the main or main function of finance is distribution. The process of distribution, which must be carried out with the help of finance, is a complex and multifaceted process. Of course, important factors in the achievement of economic and financial stability of our country are the growth of production volume, reduction of currency depreciation, increase of export volume and other similar macro-economic growth, as well as ensuring the economic growth of every enterprise, firm, and company operating in our republic. It requires development as a social entity.
RHAPSODIE: Reconstruction of High-contrAst Polarized SOurces and Deconvolution for cIrcumstellar Environments
Creators: name: Denneulin, Laurence
name: Langlois, Maud
name: Thiébaut, Éric
name: Pustelnik, Nelly
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Polarimetric imaging is one of the most effective techniques for high-contrast imaging and characterization of circumstellar environments. These environments can be characterized through direct-imaging polarimetry at near-infrared wavelengths. The SPHERE/IRDIS instrument installed on the Very Large Telescope in its dual-beam polarimetric imaging (DPI) mode, offers the capability to acquire polarimetric images at high contrast and high angular resolution. However dedicated image processing is needed to get rid of the contamination by the stellar light, of instrumental polarization effects, and of the blurring by the instrumental point spread function. We aim to reconstruct and deconvolve the near-infrared polarization signal from circumstellar environments. We use observations of these environments obtained with the high-contrast imaging infrared polarimeter SPHERE-IRDIS at the VLT. We developed a new method to extract the polarimetric signal using an inverse approach method that benefits from the added knowledge of the detected signal formation process. The method includes weighted data fidelity term, smooth penalization, and takes into account instrumental polarization. The method enables to accurately measure the polarized intensity and angle of linear polarization of circumstellar disks by taking into account the noise statistics and the convolution of the observed objects by the instrumental point spread function. It has the capability to use incomplete polarimetry cycles which enhance the sensitivity of the observations. The method improves the overall performances in particular for low SNR/small polarized flux compared to standard methods.
Multipartite entanglement of three trapped ions in a cavity and W- State generation
Creators: name: Sharma, S. Shelly
name: de Almeida, Eduardo
name: Sharma, Naresh K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A scheme to generate three qubit maximally entangled W-states, using three trapped ions interacting with red sideband tuned single mode field of a high finesse cavity, is proposed. For the cavity field initially prepared in a number state, the probability of generating three ion W-state is calculated. By using the ion-cavity coupling strengths achieved in experimental realizations, the interaction time needed for W-state generation is found to be of the order of 10 $μ$ sec. It is found that for a fixed number of photons in the cavity the nature of entanglement of ionic internal states can be manipulated by appropriate choice of initial state phonon number. The ionic qubits in W-like state are found to be entangled to cavity photons. Analytical expressions for global negativity and partial $K-$way negativities (K=2 to 4) are obtained to study the evolution of entanglement distribution as a function of interaction parameter. Reversible entanglement exchange between different entanglement modes is observed. For specific values of interaction parameter, the three ions and photon-phonon system are found to have four partite entanglement, generated by 2-way and 3-way correlations.
description: 17 pages, 07 figures, improvments to introduction and typo errors corrected
Energy conditions in f(R)-gravity
Creators: name: Santos, J.
name: Alcaniz, J. S.
name: Reboucas, M. J.
name: Carvalho, F. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In order to shed some light on the current discussion about f(R)-gravity theories we derive and discuss the bounds imposed by the energy conditions on a general f(R) functional form. The null and strong energy conditions in this framework are derived from the Raychaudhuri's equation along with the requirement that gravity is attractive, whereas the weak and dominant energy conditions are stated from a comparison with the energy conditions that can be obtained in a direct approach via an effective energy-momentum tensor for f(R)-gravity. As a concrete application of the energy conditions to locally homogeneous and isotropic f(R)-cosmology, the recent estimated values of the deceleration and jerk parameters are used to examine the bounds from the weak energy condition on the parameters of two families of f(R)-gravity theories.
description: 5 pages. V2: Version to appear in Phys.Rev.D, references added, minor changes
Stabilizer rank and higher-order Fourier analysis
Creators: name: Labib, Farrokh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We establish a link between stabilizer states, stabilizer rank, and higher-order Fourier analysis -- a still-developing area of mathematics that grew out of Gowers's celebrated Fourier-analytic proof of Szemerédi's theorem \cite{gowers1998new}. We observe that $n$-qudit stabilizer states are so-called nonclassical quadratic phase functions (defined on affine subspaces of $\mathbb{F}_p^n$ where $p$ is the dimension of the qudit) which are fundamental objects in higher-order Fourier analysis. This allows us to import tools from this theory to analyze the stabilizer rank of quantum states. Quite recently, in \cite{peleg2021lower} it was shown that the $n$-qubit magic state has stabilizer rank $Ω(n)$. Here we show that the qudit analog of the $n$-qubit magic state has stabilizer rank $Ω(n)$, generalizing their result to qudits of any prime dimension. Our proof techniques use explicitly tools from higher-order Fourier analysis. We believe this example motivates the further exploration of applications of higher-order Fourier analysis in quantum information theory.
description: 16 pages
An H-alpha Imaging Survey of Galaxies in the Local 11 Mpc Volume
Creators: name: Kennicutt, Robert C.
name: Lee, Janice C.
name: J., Jose G. Funes S.
name: Sakai, Shoko
name: Akiyama, Sanae
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As part of a broader effort to characterize the population of star-forming galaxies in the local universe, we have carried out an H-alpha+[NII] imaging survey for an essentially volume-limited sample of galaxies within 11 Mpc of the Milky Way. This paper describes the design of the survey, the observation, data processing, and calibration procedures, and the characteristics of the galaxy sample. The main product of the paper is a catalog of integrated H-alpha fluxes, luminosities, and equivalent widths for the galaxies in the sample. We briefly discuss the completeness properties of the survey and compare the distribution of the sample and its star formation properties to other large H-alpha imaging surveys. These data form the foundation for a series of follow-up studies of the star formation properties of the local volume, and the properties and duty cycles of star formation bursts in dwarf galaxies.
description: 74 pages, 11 figures, accepted for publication in the Astrophysical Journal Supplement Series
FINANCIAL STABILITY OF THE ENTERPRISE AND EFFICIENCY OF ITS MANAGEMENT
Creators: name: Khamdamov, Sardor
Publisher: name: Zenodo
Year: 2023

description: In the conditions of development of market relations, the financial stability of an enterprise as an object of management acquires particular relevance. Based on the current economic conditions, the study of the process of ensuring the financial stability of an enterprise requires an integrated approach to the study, the development of a conceptual framework for managing it as a set of theoretical and methodological provisions that are currently not sufficiently studied in depth. This paper formulates the main conceptual provisions, principles, and functions of managing the financial stability of an enterprise in the context of integration processes in a market environment.
Non-Fermi liquid behavior in a fluctuating valence system, the filled skutterudite compound CeRu_{4}As_{12}
Creators: name: Baumbach, R. E.
name: Ho, P. C.
name: Sayles, T. A.
name: Maple, M. B.
name: Wawryk, R.
name: Cichorek, T.
name: Pietraszko, A.
name: Henkie, Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Electrical resistivity $ρ$, specific heat C, and magnetic susceptibility $χ$ measurements made on the filled skutterudite CeRu_4As_{12} reveal non-Fermi liquid (NFL) T - dependences at low T, i.e., $ρ$(T) $\sim$ T^{1.4} and weak power law or logarithmic divergences in C(T)/T and $χ$(T). Measurements also show that the T - dependence of the thermoelectric power S(T) deviates from that seen in other Ce systems. The NFL behavior appears to be associated with fluctuations of the Ce valence between 3^+ and 4^+ rather than a typical Kondo lattice scenario that would be appropriate for an integral Ce valence of 3^+.
description: 18 pages, 5 figures
The INTEGRAL view on Black Hole X-ray Binaries
Creators: name: Motta, S. E.
name: Rodriguez, J.
name: Jourdain, E.
name: Del Santo, M.
name: Belanger, G.
name: Cangemi, F.
name: Grinberg, V.
name: Kajava, J. J. E.
name: Kuulkers, E.
name: Malzac, J.
name: Pottschmidt, K.
name: Roques, J. P.
name: Sanchez-Fernandez, C.
name: Wilms, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: INTEGRAL is an ESA mission in fundamental astrophysics that was launched in October 2002. It has been in orbit for over 18 years, during which it has been observing the high-energy sky with a set of instruments specifically designed to probe the emission from hard X-ray and soft gamma-ray sources. This paper is devoted to the subject of black hole binaries, which are among the most important sources that populate the high-energy sky. We present a review of the scientific literature based on INTEGRAL data, which has significantly advanced our knowledge in the field of relativistic astrophysics. We briefly summarise the state-of-the-art of the study of black hole binaries, with a particular focus on the topics closer to the INTEGRAL science. We then give an overview of the results obtained by INTEGRAL and by other observatories on a number of sources of importance in the field. Finally, we review the main results obtained over the past 18 years on all the black hole binaries that INTEGRAL has observed. We conclude with a summary of the main contributions of INTEGRAL to the field, and on the future perspectives.
description: 44 pages, 11 figures. Accepted for publication on New Astronomy Reviews
Learned Optimizers for Analytic Continuation
Creators: name: Huang, Dongchen
name: Yang, Yi-feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Traditional maximum entropy and sparsity-based algorithms for analytic continuation often suffer from the ill-posed kernel matrix or demand tremendous computation time for parameter tuning. Here we propose a neural network method by convex optimization and replace the ill-posed inverse problem by a sequence of well-conditioned surrogate problems. After training, the learned optimizers are able to give a solution of high quality with low time cost and achieve higher parameter efficiency than heuristic fully-connected networks. The output can also be used as a neural default model to improve the maximum entropy for better performance. Our methods may be easily extended to other high-dimensional inverse problems via large-scale pretraining.
description: 11 pages, 7 figures, 6 tables
Chiral spin states in the pyrochlore Heisenberg magnet: Fermionic mean-field theory and variational Monte Carlo calculations
Creators: name: Kim, Jung Hoon
name: Han, Jung Hoon
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Fermionic mean-field theory and variational Monte Carlo calculations are employed to shed light on the possible uniform ground states of the Heisenberg model on the pyrochlore lattice. Among the various flux configurations, we find the chiral spin states carrying \pm pi/2 flux through each triangular face to be the most stable both within the mean-field theory and the projected wave-function studies. Properties of the spin-spin correlation function and the chirality order parameter are calculated for the projected wave functions. Mean-field band structures are examined.
description: 4 pages, 3 figures, minor text revisions, references added
Nonlocal Excitation Spectra in 2D Doped Hubbard Model
Creators: name: Kakehashi, Yoshiro
name: Fulde, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single-particle excitation spectra of the two-dimensional Hubbard model on the square lattice near half filling and at zero temperature are investigated on the basis of the self-consistent projection operator method. The method guarantees a high accuracy of the spectra with high energy and high momentum resolutions. It takes into account long-range intersite correlations as well as the strong on-site correlations. Effects of nonlocal excitations are clarified by comparing the results with those of the single-site approximation. The calculated spectra verify the quantum Monte-Carlo results for finite temperatures. The spectra at the Fermi level yield a hole-like Fermi surface in the underdoped region and an electron-like Fermi surface in the overdoped region. From a numerical analysis of the momentum dependent effective mass and self-energy, it is concluded that a marginal Fermi-liquid like state persists even at finite doping concentrations in the strongly correlated region because a van Hove singularity is pinned to the Fermi surface. It is also found that a kink structure appears in the quasiparticle energy band in the same region. The kink is shown to be caused by a mixing between the quasiparticle band and an excitation band with strong short-range antiferromagnetic correlations. These results suggest an explanation for some of the unusual properties of the normal state in high-$T_{\rm c}$ cuprates.
description: 12 pages, 23 figures
Non-Detection of Gravitationally Redshifted Absorption Lines in the X-ray Burst Spectra of GS 1826-24
Creators: name: Kong, Albert K. H.
name: Miller, Jon M.
name: Mendez, Mariano
name: Cottam, Jean
name: Lewin, Walter H. G.
name: Paerels, Frederik
name: Kuulkers, Erik
name: Wijnands, Rudy
name: van der Klis, Michiel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: During a 200 ks observation with the XMM-Newton Reflection Grating Spectrometer, we detected 16 type-I X-ray bursts from GS 1826-24. We combined the burst spectra in an attempt to measure the gravitational redshifts from the surface of the neutron star. We divided the composite GS 1826-24 burst spectrum into three groups based on the blackbody temperature during the bursts. The spectra do not show any obvious discrete absorption lines. We compare our observations with those of EXO 0748-676.
description: 4 pages, 4 figures; accepted for publication in ApJL
Disorder in order: Localization without randomness in a cold atom system
Creators: name: Rose, Félix
name: Schmidt, Richard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a mapping between the Edwards model of disorder describing the motion of a single particle subject to randomly-positioned static scatterers and the Bose polaron problem of a light quantum impurity interacting with a Bose-Einstein condensate (BEC) of heavy atoms. The mapping offers an experimental setting to investigate the physics of Anderson localization where, by exploiting the quantum nature of the BEC, the time evolution of the quantum impurity emulates the disorder-averaged dynamics of the Edwards model. Valid in any space dimension, the mapping can be extended to include interacting particles, arbitrary disorder or confinement, and can be generalized to study many-body localization. Moreover, the corresponding exactly-solvable disorder model offers means to benchmark variational approaches used to study polaron physics. Here, we illustrate the mapping by focusing on the case of an impurity interacting with a one-dimensional BEC through a contact interaction. While a simple wave function based on the expansion in the number of bath excitations misses the localization physics entirely, a coherent state Ansatz combined with a canonical transformation captures the physics of disorder and Anderson localization.
description: 10 pages, 4 figures. Definitive version
Pair Analysis of Field Galaxies from the Red-Sequence Cluster Survey
Creators: name: Hsieh, B. C.
name: Yee, H. K. C.
name: Lin, H.
name: Gladders, M. D.
name: Gilbank, D. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the evolution of the number of close companions of similar luminosities per galaxy (Nc) by choosing a volume-limited subset of the photometric redshift catalog from the Red-Sequence Cluster Survey (RCS-1). The sample contains over 157,000 objects with a moderate redshift range of 0.25 < z < 0.8 and absolute magnitude in Rc (M_Rc) < -20. This is the largest sample used for pair evolution analysis, providing data over 9 redshift bins with about 17,500 galaxies in each. After applying incompleteness and projection corrections, Nc shows a clear evolution with redshift. The Nc value for the whole sample grows with redshift as (1+z)^m, where m = 2.83 +/- 0.33 in good agreement with N-body simulations in a LCDM cosmology. We also separate the sample into two different absolute magnitude bins: -25 < M_Rc < -21 and -21 < M_Rc < -20, and find that the brighter the absolute magnitude, the smaller the m value. Furthermore, we study the evolution of the pair fraction for different projected separation bins and different luminosities. We find that the m value becomes smaller for larger separation, and the pair fraction for the fainter luminosity bin has stronger evolution. We derive the major merger remnant fraction f_rem = 0.06, which implies that about 6% of galaxies with -25 < M_Rc < -20 have undergone major mergers since z = 0.8.
description: ApJ, in press
Enhancement of electromagnetically induced transparency based Rydberg-atom electrometry through population repumping
Creators: name: Prajapati, Nikunjkumar
name: Robinson, Amy K.
name: Berweger, Samuel
name: Simons, Matthew T.
name: Artusio-Glimpse, Alexandra B.
name: Holloway, Christopher L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate improved sensitivity of Rydberg electrometry based on electromagnetically induced transparency (EIT) with a ground state repumping laser. Though there are many factors that limit the sensitivity of radio frequency field measurements, we show that repumping can enhance the interaction strength while avoiding additional Doppler or power broadening. Through this method, we nearly double the EIT amplitude without an increase in the width of the peak. A similar increase in amplitude without the repumping field is not possible through simple optimization.We also establish that one of the key limits to detection is the photon shot noise of the probe laser. We show an improvement on the sensitivity of the device by a factor of nearly 2 in the presence of the repump field.
description: 5 pages, 6 figures
Identification of the ECR zone in the SWISSCASE ECR ion source
Creators: name: Bodendorfer, Michael
name: Altwegg, Kathrin
name: Wurz, Peter
name: Shea, Herbert
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The magnetic field of the permanent magnet electron cyclotron resonance (ECR) ion source SWISSCASE located at the University of Bern has been numerically simulated and experimentally investigated. For the first time the magnetized volume qualified for electron cyclotron resonance at 10.88 GHz and 388.6 mT has been analyzed in highly detailed 3D simulations with unprecedented resolution. The observed pattern of carbon coatings on the source correlates strongly with the electron and ion distribution in the ECR plasma of SWISSCASE. Under certain plasma conditions the ion distribution is tightly bound to the electron distribution and can considerably simplify the numerical calculations in ECR related applications such as ECR ion engines and ECR ion implanters.
description: 9 pages, 8 figures
การมีส่วนร่วมในการบริหารโรงเรียน ของคณะกรรมการสถานศึกษาขั้นพื้นฐาน กรณีศึกษาโรงเรียนเนินลาดวิทยา สังกัดสำนักงานเขตพื้นทีการศึกษากาฬสินธุ์ เขต 2
Creators: name: สุจิตรา จรทะผา
name: ศักดิ์พงศ์ หอมหวล
name: สมบัติ ฤทธิเดช
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2011
Subjects: การมีส่วนร่วมในการบริหารโรงเรียน, คณะกรรมการสถานศึกษาขั้นพื้นฐาน

description: 1, 5, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
Attribution of maternal social cues in conduct disordered boys
Creators: name: Flessati, Eugene William
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this investigation was to determine the extent to which conduct disordered boys attribute hostile intent to their mothers' behavior following maternal behavior that results in negative, ambiguous, or positive outcomes for the child. Twenty-four conduct disordered and 24 normal boys between the ages of 6 and 11 years were individually presented with a series of hypothetical scenarios that depicted interactions between the boy and his mother. Following each scenario, the children were assessed with respect to the attributions of intent they made regarding their mothers' behavior, as well as their verbal report of behavioral response toward her. Results indicated that conduct disordered and normal boys did not differ with respect to either the attributions they made regarding their mothers' behavior or their verbal report of behavioral response. Results also indicated that attribution of intent was directly related to verbal report of behavioral response. The results were discussed in terms of issues related to mother-child interaction and the specific methodology employed in this study.
การพัฒนาบทเรียนคอมพิวเตอร์ช่วยสอนเรื่อง ชีวิตพืชและสัตว์กลุ่มสาระการเรียนรู้วิทยาศาสตร์ ชั้นประถมศึกษาปีที่ 2
Creators: name: พิกุล ปักษ์สังคะเนย์
name: เนตรชนก จันทร์สว่าง
name: สุรทิน นาราภิรมย์3
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2011
Subjects: ชีวิตพืชและสัตว์, คอมพิวเตอร์ช่วยสอน, กลุ่มสาระการเรียนรู้วิทยาศาสตร์

description: 1, 5, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
КОРХОНАЛАР МОЛИЯВИЙ БАРҚАРОРЛИГИ ВА МОЛИЯВИЙ САЛОҲИЯТИНИНГ ЎЗАРО БОҒЛИҚЛИГИ
Creators: name: Mуфтайдинов, Бобир
Publisher: name: Zenodo
Year: 2023

description: Мақолада корхоналар молиявий барқарорлиги ва молиявий салоҳиятининг ўзаро боғлиқлигининг назарий асослари ҳамда корхоналарнинг молиявий барқарорлигининг макон нуқтаи назаридан тавсифланган.
Towards an Understanding of Situated AR Visualization for Basketball Free-Throw Training
Creators: name: Lin, Tica
name: Singh, Rishi
name: Yang, Yalong
name: Nobre, Carolina
name: Beyer, Johanna
name: Smith, Maurice A.
name: Pfister, Hanspeter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: 68U07

description: We present an observational study to compare co-located and situated real-time visualizations in basketball free-throw training. Our goal is to understand the advantages and concerns of applying immersive visualization to real-world skill-based sports training and to provide insights for designing AR sports training systems. We design both a situated 3D visualization on a head-mounted display and a 2D visualization on a co-located display to provide immediate visual feedback on a player's shot performance. Using a within-subject study design with experienced basketball shooters, we characterize user goals, report on qualitative training experiences, and compare the quantitative training results. Our results show that real-time visual feedback helps athletes refine subsequent shots. Shooters in our study achieve greater angle consistency with our visual feedback. Furthermore, AR visualization promotes an increased focus on body form in athletes. Finally, we present suggestions for the design of future sports AR studies.
description: To appear in the 2021 ACM Conference on Human Factors in Computing Systems (CHI 2021)
Stochastic resonance with weak monochromatic driving: gains above unity induced by high-frequency signals
Creators: name: Casado-Pascual, Jesús
name: Cubero, David
name: Baltanás, José Pablo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the effects of a high-frequency (HF) signal on the response of a noisy bistable system to a low-frequency subthreshold sinusoidal signal. We show that, by conveniently choosing the ratio of the amplitude of the HF signal to its frequency, stochastic resonance gains greater than unity can be measured at the low-frequency value. Thus, the addition of the HF signal can entail an improvement in the detection of weak monochromatic signals. The results are explained in terms of an effective model and illustrated by means of numerical simulations.
description: 5 pages, 2 figures
การพัฒนาบทเรียนคอมพิวเตอร์ช่วยสอน เรื่อง น้ำ ฟ้าและดวงดาวชั้นประถมศึกษาปีที่ 5
Creators: name: บูลวัชร ไชยเดช
name: เนตรชนก จันทร์สว่าง
name: สุรทิน นาราภิรมย์
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2011
Subjects: บทเรียนคอมพิวเตอร์ช่วยสอน, น้ำ, ฟ้า, กลุ่มสาระการเรียนรู้วิทยาศาสตร์

description: 1, 5, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
Modeling of Emission Signatures of Massive Black Hole Binaries: I Methods
Creators: name: Bogdanovic, Tamara
name: Smith, Britton D.
name: Sigurdsson, Steinn
name: Eracleous, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We model the electromagnetic signatures of massive black hole binaries (MBHBs) with an associated gas component. The method comprises numerical simulations of relativistic binaries and gas coupled with calculations of the physical properties of the emitting gas. We calculate the UV/X-ray and the Halpha light curves and the Halpha emission profiles. The simulations are carried out with a modified version of the parallel tree SPH code Gadget. The heating, cooling, and radiative processes are calculated for two different physical scenarios, where the gas is approximated as a black-body or a solar metallicity gas. The calculation for the solar metallicity scenario is carried out with the photoionization code Cloudy. We focus on sub-parsec binaries which have not yet entered the gravitational radiation phase. The results from the first set of calculations, carried out for a coplanar binary and gas disk, suggest that there are pronounced outbursts in the X-ray light curve during pericentric passages. If such outbursts persist for a large fraction of the lifetime of the system, they can serve as an indicator of this type of binary. The predicted Halpha emission line profiles may be used as a criterion for selection of MBHB candidates from existing archival data. The orbital period and mass ratio of a binary may be inferred after carefully monitoring the evolution of the Halpha profiles of the candidates. The discovery of sub-parsec binaries is an important step in understanding of the merger rates of MBHBs and their evolution towards the detectable gravitational wave window.
description: 28 pages, 29 figures, to appear in ApJS
Future perspectives in solar hot plasma observations in the soft X-rays
Creators: name: Corso, Alain Jody
name: Del Zanna, Giulio
name: Polito, Vanessa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The soft X-rays (SXRs: 90--150 $Å$) are among the most interesting spectral ranges to be investigated in the next generation of solar missions due to their unique capability of diagnosing phenomena involving hot plasma with temperatures up to 15~MK. Multilayer (ML) coatings are crucial for developing SXR instrumentation, as so far they represent the only viable option for the development of high-efficiency mirrors in this spectral range. However, the current standard MLs are characterized by a very narrow spectral band which is incompatible with the science requirements expected for a SXR spectrometer. Nevertheless, recent advancement in the ML technology has made the development of non-periodic stacks repeatable and reliable, enabling the manufacturing of SXR mirrors with a valuable efficiency over a large range of wavelengths. In this work, after reviewing the state-of-the-art ML coatings for the SXR range, we investigate the possibility of using M-fold and aperiodic stacks for the development of multiband SXR spectrometers. After selecting a possible choice of key spectral lines, some trade-off studies for an eight-bands spectrometer are also presented and discussed, giving an evaluation of their feasibility and potential performance.
description: Accepted for publication in Experimental Astronomy
The Phase Diagram of the Quantum Curie-Weiss Model
Creators: name: Chayes, Lincoln
name: Crawford, Nicholas
name: Ioffe, Dmitry
name: Levit, Anna
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 82B10

description: This paper studies a generalization of the Curie-Weiss model (the Ising model on a complete graph) to quantum mechanics. Using a natural probabilistic representation of this model, we give a complete picture of the phase diagram of the model in the parameters of inverse temperature and transverse field strength. Further analysis computes the critical exponent for the decay of the order parameter in the approach to the critical curve and gives useful stability properties of a variational problem associated with the representation.
description: 20 pages/Removed Bracket from title
On reverberation and cross-correlation estimates of the size of the broad-line region in active galactic nuclei
Creators: name: Melnikov, Alexander V.
name: Shevchenko, Ivan I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is known that the dependence of the emission-line luminosity of a typical cloud in the active galactic nuclei broad-line regions (BLRs) upon the incident flux of ionizing continuum can be nonlinear. We study how this nonlinearity can be taken into account in estimating the size of the BLR by means of the "reverberation" methods. We show that the BLR size estimates obtained by cross-correlation of emission-line and continuum light curves can be much (up to an order of magnitude) less than the values obtained by reverberation modelling. This is demonstrated by means of numerical cross-correlation and reverberation experiments with model continuum flares and emission-line transfer functions and by means of practical reverberation modelling of the observed optical spectral variability of NGC 4151. The time behaviour of NGC 4151 in the H_alpha and H_beta lines is modelled on the basis of the observational data by Kaspi et al. (1996, ApJ, 470, 336) and the theoretical BLR model by Shevchenko (1984, Sov. Astron. Lett., 10, 377; 1985, Sov. Astron. Lett., 11, 35). The values of the BLR parameters are estimated that allow to judge on the size and physical characteristics of the BLR. The small size of the BLR, as determined by the cross-correlation method from the data of Kaspi et al. (1996, ApJ, 470, 336), is shown to be an artifact of this method. So, the hypothesis that the BLR size varies in time is not necessitated by the observational data.
description: 26 pages, including 11 figures
Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP
Creators: name: The DELPHI Collaboration
name: Abdallah, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The quark model does not exclude states composed of more than three quarks, like pentaquark systems. Controversial evidence for such states has been published in the last years, in particular: for a strange pentaquark Theta(1540)+; for a double-strange state, the Xi(1862)--, subsequently called Phi(1860)--; and for a charmed state, the Theta_c(3100)^0. If confirmed, a full pentaquark family might exist; such pentaquark states could be produced in e+e- annihilations near the Z energy. In this paper a search for pentaquarks is described using the DELPHI detector at LEP, characterized by powerful particle identification sub-systems crucial in the separation of the signal from the background for these states. At 95% CL, upper limits are set on the production rates of such particles and their charge-conjugate state per Z decay: x Br(Theta+ -> pK0_S) < 5.1 x 10^{-4} < 1.6 x 10^{-3} x Br(Phi(1860)-- -> Xi- pi-) < 2.9 x 10^{-4} x Br(Theta_c(3100)^0 -> D*+ pbar) < 8.8 x 10^{-4} .
description: 15 pages, 5 figures, Accepted by Phys. Lett. B
Aprile 1924: fiori di carta per Eleonora Duse
Creators: name: Pagani, Maria Pia
Publisher: name: Università degli Studi di Milano
Year: 2014
Subjects: Duse; necrologi; Vittoriale; 1924

description: Questo contributo porta alla luce vari articoli usciti sulle principali testate italiane con l’annuncio della morte di Eleonora Duse, avvenuta a Pittsburgh il 21 aprile 1924. Essi racchiudono intensi ricordi che vanno ben oltre il necrologio tradizionale, e sono accomunati da un implicito ma pulsante desiderio: offrire un ritratto dell’attrice che vinca la sfida del tempo e l’effimero del teatro. Ne emerge un’immagine più viva che mai, destinata a consolidare ulteriormente il mito della Duse, a omaggiare il suo talento unico e a tramandare la sua straordinaria arte ai posteri.

This article focuses on a series of articles published on the main Italian newspapers announcing Eleonora Duse’s death, which occurred in Pittsburgh on April 21, 1924. The memories that they contain actually exceed the traditional form of the obituary and they share the same strong desire: to offer a portrait of the actress able to challenge time and the fleeting dimension of theatre. The result is a particularly vivid image, one destined to consolidate Duse’s myth, to pay homage to her unique talent and to hand down her extraordinary art to posterity.
description: ENTHYMEMA, No 11 (2014)
Schizochytrium sp. and Lactoferrin supplementation alleviates Escherichia coli K99-induced diarrhea in pre-weaning dairy calves_supplemental_files.docx
Creators: name: Ma, Lu
name: Zhu, yingkun
name: Bu, Dengpan
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 300109
subject: Non-genetically modified uses of biotechnology
classificationCode: 300199
subject: Agricultural biotechnology not elsewhere classified

description: Supplementation Figures and tables for Schizochytrium sp. and Lactoferrin supplementation alleviates Escherichia coli K99-induced diarrhea in pre-weaning dairy calves
ҲУНАРМАНДЧИЛИКНИ РИВОЖЛАНТИРИШДА ҲУДУДИЙ ДАВЛАТ ДАСТУРЛАРИНИ ИШЛАБ ЧИҚИШ ЙЎНАЛИШЛАРИ
Creators: name: Халилова, Нилуфар
Publisher: name: Zenodo
Year: 2023

description: Мақолада Ҳунармандчилик ва унинг ҳудудлар иқтисодиётини ривожлантиришда ўрни, айрим ривожланган мамлакатларда ҳунармандчилик хизматлари ўрганилган. Бундан ташқари мамлакатда «Замонавий ҳунарманд» давлат дастурини ишлаб чиқиш ва амалга оширишда устувор йўналишлари аниқланган.
Image coding for machines: an end-to-end learned approach
Creators: name: Le, Nam
name: Zhang, Honglei
name: Cricri, Francesco
name: Ghaznavi-Youvalari, Ramin
name: Rahtu, Esa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Over recent years, deep learning-based computer vision systems have been applied to images at an ever-increasing pace, oftentimes representing the only type of consumption for those images. Given the dramatic explosion in the number of images generated per day, a question arises: how much better would an image codec targeting machine-consumption perform against state-of-the-art codecs targeting human-consumption? In this paper, we propose an image codec for machines which is neural network (NN) based and end-to-end learned. In particular, we propose a set of training strategies that address the delicate problem of balancing competing loss functions, such as computer vision task losses, image distortion losses, and rate loss. Our experimental results show that our NN-based codec outperforms the state-of-the-art Versa-tile Video Coding (VVC) standard on the object detection and instance segmentation tasks, achieving -37.87% and -32.90% of BD-rate gain, respectively, while being fast thanks to its compact size. To the best of our knowledge, this is the first end-to-end learned machine-targeted image codec.
description: Fixed a couple of mistakes since the version accepted in IEEE ICASSP2021
Sparse random graphs with clustering
Creators: name: Bollobas, Bela
name: Janson, Svante
name: Riordan, Oliver
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 60C05, 05C80

description: In 2007 we introduced a general model of sparse random graphs with independence between the edges. The aim of this paper is to present an extension of this model in which the edges are far from independent, and to prove several results about this extension. The basic idea is to construct the random graph by adding not only edges but also other small graphs. In other words, we first construct an inhomogeneous random hypergraph with independent hyperedges, and then replace each hyperedge by a (perhaps complete) graph. Although flexible enough to produce graphs with significant dependence between edges, this model is nonetheless mathematically tractable. Indeed, we find the critical point where a giant component emerges in full generality, in terms of the norm of a certain integral operator, and relate the size of the giant component to the survival probability of a certain (non-Poisson) multi-type branching process. While our main focus is the phase transition, we also study the degree distribution and the numbers of small subgraphs. We illustrate the model with a simple special case that produces graphs with power-law degree sequences with a wide range of degree exponents and clustering coefficients.
description: 62 pages; minor revision
Simultaneous ferromagnetic metal-semiconductor transition in electron-doped EuO
Creators: name: Arnold, Michael
name: Kroha, Johann
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a general framework to describe the simultaneous para-to-ferromagnetic and semiconductor-to-metal transition in electron-doped EuO. The theory correctly describes detailed experimental features of the conductivity and of the magnetization, in particular the doping dependence of the Curie temperature. The existence of correlation-induced local moments on the impurity sites is essential for this description.
description: 4 pages, 4 figures, Phys. Rev. Lett., published version; different behavior of Gd impurities and O defects clarified
Gliding motility of Plasmodium merozoites.
Creators: name: Yahata, Kazuhide
name: Hart, Melissa N
name: Davies, Heledd
name: Asada, Masahito
name: Wassmer, Samuel C
name: Templeton, Thomas J
name: Treeck, Moritz
name: Moon, Robert W
name: Kaneko, Osamu
Publisher: name: The Francis Crick Institute
Year: 2021
Subjects: subject: Biochemistry & Proteomics
subject: Cell Biology
subject: Infectious Disease
subject: Immunology
subject: FOS: Clinical medicine
subject: Computational & Systems Biology

description: Plasmodium malaria parasites are obligate intracellular protozoans that use a unique form of locomotion, termed gliding motility, to move through host tissues and invade cells. The process is substrate dependent and powered by an actomyosin motor that drives the posterior translocation of extracellular adhesins which, in turn, propel the parasite forward. Gliding motility is essential for tissue translocation in the sporozoite and ookinete stages; however, the short-lived erythrocyte-invading merozoite stage has never been observed to undergo gliding movement. Here we show Plasmodium merozoites possess the ability to undergo gliding motility in vitro and that this mechanism is likely an important precursor step for successful parasite invasion. We demonstrate that two human infective species, Plasmodium falciparum and Plasmodium knowlesi, have distinct merozoite motility profiles which may reflect distinct invasion strategies. Additionally, we develop and validate a higher throughput assay to evaluate the effects of genetic and pharmacological perturbations on both the molecular motor and the complex signaling cascade that regulates motility in merozoites. The discovery of merozoite motility provides a model to study the glideosome and adds a dimension for work aiming to develop treatments targeting the blood stage invasion pathways.
Resonant Phenomena in Antihydrogen-Hydrogen Scattering
Creators: name: Voronin, A. Yu.
name: Froelich, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We present a treatment of cold hydrogen-antihydrogen collisions based on the asymptotic properties of atom-antiatom interactions. We derive general formulas for the elastic and inelastic cross sections and for the scattering lengths and analyze their sensitivity to the parameters characterizing the inelasticity of the collision process. Given the inelasticity, we obtain bounds for the complex scattering length. We investigate the influence of strong nuclear forces and the isotope effects in $\bar{\rm H}{\rm H}$ and $\bar{\rm H}{\rm D}$ collisions and demonstrate enhancement of these effects due to the presence of the near-threshold narrow ${\rm H}\bar{\rm H}$ ($\bar{\rm H}{\rm D}$) states. The values of the elastic and inelastic cross-sections with simultaneous account of rearrangement and strong forces are presented. General expressions for the (complex) energies of the near-threshold $\rm{H}\bar{\rm H}$ states are obtained.
description: 26 pages 7 figures