Miracle-dz/UniFAR-FTUs huggingface dataset:
Performance evaluation in assets management with the AHP

The main objective of this article is to develop a transparent and efficient model, using the AHP (Analytic Hierarchy Process) method as a basis and applying the software SuperDecisions, which makes it possible to evaluate the performance of employees, aligning the individual objectives defined and the competences required for the organisational mission. The methodology used was of an investigative and exploratory nature, due to the need to increase knowledge on the use of the AHP in the process of classifying employee performance. Starting from a high performance culture, it is possible to highlight the employees who present the best performance and improve the remuneration policies, as well as invest in the training of the skills lacking in a clear and assertive manner. The results found in this research prove the viability of the respective application, which is directly related to the meeting of targets and, consequently,to sustaining competitiveness and increasing added value for shareholders.
Regeneration mechanisms of near-wall turbulence structures

Direct numerical simulations of a highly constrained plane Couette flow are employed to study the dynamics of the structures found in the near-wall region of turbulent flows. Starting from a fully developed turbulent flow, the dimensions of the computational domain are reduced to near the minimum values which will sustain turbulence. A remarkably well-defined, quasi-cyclic and spatially organized process of regeneration of near-wall structures is observed. This process is composed of three distinct phases: formation of streaks by streamwise vortices, breakdown of the streaks, and regeneration of the streamwise vortices. Each phase sets the stage for the next, and these processes are analysed in detail. The most novel results concern vortex regeneration, which is found to be a direct result of the breakdown of streaks that were originally formed by the vortices, and particular emphasis is placed on this process. The spanwise width of the computational domain corresponds closely to the typically observed spanwise spacing of near-wall streaks. When the width of the domain is further reduced, turbulence is no longer sustained. It is suggested that the observed spacing arises because the time scales of streak formation, breakdown and vortex regeneration become mismatched when the streak spacing is too small, and the regeneration cycle at that scale is broken.
Auroral resonance line radiative transfer

A model is developed for simulating the two-dimensional radiative transfer of resonance line emissions in auroras. The method of solution utilizes Fourier decomposition of the horizontal dependence in the intensity field so that the two-dimensional problem becomes a set of one-dimensional problems having different horizontal wavenumbers. The individual one-dimensional problems are solved for using a Feautrier-type solution of the differential-integral form of the radiative transfer equation. In the limit as the horizontal wavenumber becomes much larger than the local line-center extinction coefficient, the scattering integral becomes considerably simplified, and the final source function is evaluated in closed form. The two-dimensional aspects of the model axe tested against results for nonresonance radiative transfer studies, and the resonance line part of the model is tested against results of existing plane-parallel resonance line radiative transfer codes. Finally, the model is used to simulate the intensity field of OI 1304 A for hard and soft auroras of various Gaussian horizontal widths. The results demonstrate the importance of considering the effects of two-dimensional radiative transfer when analyzing auroral resonance line data.
Beam commissioning and operation of the J-PARC main ring synchrotron

Tadashi Koseki1∗, Yoshitugu Arakaki1, Yong Ho Chin1, Keigo Hara1, Katsushi Hasegawa1, Yoshinori Hashimoto1, Yoichiro Hori1, Susumu Igarashi1, Koji Ishii1, Norihiko Kamikubota1, Takuro Kimura1, Kunio Koseki1, Kuanjyun Fan1, Chikashi Kubota1, Yuu Kuniyasu1, Yoshinori Kurimoto1, Seishu Lee1, Hiroshi Matsumoto1, Alexander Molodozhentsev1, Yuichi Morita1, Shigeru Murasugi1, Ryotaro Muto1, Fujio Naito1, Hidetoshi Nakagawa1, Shu Nakamura1, Kazuaki Niki1, Kazuhito Ohmi1, Chihiro Ohmori1, Masashi Okada1, Katsuya Okamura1, Takao Oogoe1, Kazufumi Ooya1, Kenichi Sato1, Yoichi Sato1, Yoshihiro Sato1, Kenichirou Satou1, Masayuki Shimamoto1, Masashi Shirakata1, Hirohiko Someya1, Takuya Sugimoto1, Junpei Takano1, Yasuhiro Takeda1, Yoichi Takiyama1, Masaki Tejima1, Makoto Toda1 Masahito Tomizawa1, Takeshi Toyama1, Masahiko Uota1, Shuei Yamada1, Noboru Yamamoto1, Eiichi Yanaoka1, Masahito Yoshii1, Hiroyuki Harada2, Shuichiro Hatakeyama2, Hideaki Hotchi2, Masahiro Nomura2, Alexander Schnase2, Taihei Shimada2, Fumihiko Tamura2, Masanobu Yamamoto2 and Tetsushi Shimogawa3
Knowledge structuring to support facet-based ontology visualization

The huge growth of data on the Web and the requirement of semantic content analysis make the knowledge management and data mining very difficult activities. The knowledge elicitation, codification, and storage need not trivial techniques to improve formal information structuring on the Internet. Ontologies provide conceptualization and processing knowledge, sharing of consolidate understanding, reusing of domain knowledge codification for many Web applications. Manual construction of a domain-specific ontology is an intensive and time-consuming process, which requires an accurate domain expertise, because of structural and logical difficulties in the definition of concepts, as well as conceivable relationships. At the same time, the ontology visualization process requires similar endeavors to support ontology management, exploration, and browsing. This work describes an automatic method for ontology design from the content analysis of Web resources. The approach exploits a fuzzy extension of formal concept analysis model for structuring the elicited knowledge, viz. concepts and relations embedded in the resources content. Final result is an effective ontology visualization through a navigable, facet-based view of the built ontology across the extracted concepts and their own population. Furthermore, the approach proposes a simple labeling of ontology concepts through a sketched and intuitive process. © 2010 Wiley Periodicals, Inc.
Observed Properties of Interstellar Dust

Recent information on the observed properties of interstellar dust is reviewed, with an attempt made to clarify some of the observational uncertainties associated with obtaining dust parameters. Attention is given to interstellar extinction, the interstellar dust distribution, the dust-to-gas ratio, and light scattering by dust grains. Interstellar polarization is also examined, along with heavy-element depletion in the interstellar medium, thermal emission from interstellar dust grains, diffuse interstellar features, and the composition and origin of interstellar grains.
Extended completeness relation and the strength function in the absorbing boundary condition

to the energy levels calculated from the absorbing boundary condition (ABC) using the basis expansion technique. The strength function of the binary breakup, induced by the external dipole field, is calculated on the basis of the ABC + ECR method. The strength function calculated from ABC + ECR nicely reproduces the dipole strength obtained from the exact scattering wave function. According to the ECR assumed in ABC, the strength function is decomposed into contributions from the resonant and non-resonant continuum. The feature of the individual contributions in the ABC strength function is completely consistent with the result reported in the study of the complex scaling method. The non-resonant continuum strength is investigated in moredetail,andtheintegral pathintheextended completeness relationinABCisalsodiscussed.
Hysteresis band determination of direct torque controlled induction motor drives with torque ripple and motor-inverter loss considerations

The flux and torque hysteresis bands are the only gains to be adjusted in direct torque control (DTC). The torque ripple and harmonic loss of motor and switching loss of inverter greatly influence them. Hence, these variables must be observed in the control process to maximize performance of the system. In this paper, the effects of flux and torque hysteresis bands on inverter switching loss, harmonic loss, and torque ripple of induction motor are investigated. In order to find their optimum values, a cost function consisting motor harmonic losses, torque ripples, and inverter switching losses is defined. Minimizing this cost function leads to the optimum value of the hysteresis bands of torque and flux controllers.
A parameter for vulnerability evaluation of packet switched communication networks

The author provides certain properties of the minimum density of a cut set and finds its relation to the connectivity vector. He also provides an efficient algorithm which finds a tight upper bound to the minimum cut density and determines the location of a corresponding cut in the network. The proposed algorithm provides an efficient way to identify a cut set the density of which is often the minimum one or a tight upper bound to the minimum density. However, the minimum density and the sparse cut itself can always be found from a linear program. <<ETX>>
Polarimetric performance of a prototype hard X-ray telescope

Polarimetry in astronomy for the hard X- and soft /spl gamma/-ray energy range has not been developed much to date, indeed no dedicated polarimeters have ever been launched either in space or as a balloon-borne experiment. We propose a polarimetry project for hard X-ray and soft gamma ray astrophysics known as the Coded Imager and Polarimeter for High Energy Radiation (CIPHER) telescope. The novel design of this telescope, using a matrix of thick CdTe micro-spectrometers as the detection plane will allow this type of measurement to be performed for the first time by a dedicated instrument. In order to compare the results already obtained from simulations with experiment, we have constructed a prototype detector of 4/spl times/4 pixels, to study the response of this concept of polarimeter to linearly polarised radiation in the 100 keV to 1 MeV energy range. The use of a beamline at the European Synchrotron Radiation Facility; (ERSF) allowed us to study double event efficiency and distribution, for beams of nearly 100% linearly polarised radiation in the energy range from 100 keV to 1 MeV. Polarimetric Q factors higher than 0.4 for relative efficiencies higher than 20% were observed. The photon beam energy and detector thickness dependencies will be discussed, comparing these experimental results with those calculated by Monte Carlo simulations.
Dynamo Action in Hall Magnetohydrodynamics

We show that the generally neglected Hall term in the equations for two-fluid magnetohydrodynamics may have a profound effect on α-dynamo action. The new calculation, in addition to subsuming the standard results from the mean field approach, contains a contribution to the α-coefficient entirely due to the Hall current in the microscale.
JET RECONSTRUCTION IN CMS USING CHARGED TRACKS ONLY

We present results on the performance of jet reconstruction in CMS, using charged tracks only. Jet reconstruction with tracks is completely independent from jet finding with calorimeter towers and is an extremely clean and efficient way to find jets, and determine their directions with good precision. A commissioning analysis using approximately 100 μb−1 of minimum bias pp collision data at shows that for jets with pT > 10 GeV/c the agreement between the data and PYTHIA predictions for properties of minimum bias events appears to be good, and there is consistency of track jets and calorimeter-based jets.
Near-field Characterization on Light Emanated from Subwavelength Plasmonic Double Slit of Finite Length

Near-field properties of light emanated from a subwavelength double slit of finite length in a thin metal film, which is essential for understanding fundamental physical mechanisms for near-field optical beam manipulations and various potential nanophotonic device applications, is investigated by using a three- dimensional finite-difference time-domain method. Near-field intensity distribution along the propagation direction of light after passing through the slit has been obtained from the phase relation of transverse electric and magnetic fields and the wave impedance. It is found that the near field of emerged light from the both slits is evanescent, that is consistent with conventional surface plasmon localization near the metal surface. Due to the finite of the slit, the amplitude of this evanescent field does not monotonically approach to than of the infinite slit as the slit length increases, i.e. the near-field of the longer slit along the center line can be weaker than that of the shorter one.
Fundamental groups of clique complexes of random graphs

We study fundamental groups of clique complexes associated to random Erdős–Rényi graphs Γ . We establish thresholds for a number of properties of fundamental groups of these complexes XΓ . In particular, if p=nα , then we show that gdim(π1(XΓ))=cd(π1(XΓ))=1ifα<−12,gdim(π1(XΓ))=cd(π1(XΓ))=2if−12−13 . We prove that for −1130
GENERAL THEORY OF RESISTIVE BEAM INSTABILITIES.

This paper considers all resistive instabilities of a self‐pinched cylindrically symmetric beam of charged particles in a finite or an infinite Ohmic plasma channel. The problem is reduced to an ordinary second‐order linear differential equation for the longitudinal component of the perturbed electric field. The equation can be solved for a uniform beam shape, yielding an implicit transcendental equation whose roots define the various modes. We find that for each azimuthal ``quantum number'' m there are two infinite sequences of modes and two exceptional modes, except that some of these modes are missing for m = 0, 1, and 2. In all modes we find stable oscillation at very low and very high frequencies, and instability at intermediate frequencies, the growth rates generally reaching maxima somewhat less than the betatron frequency ωβ. The largest maximum growth rate is in the ``hose'' mode (the only exceptional mode for m = 1), where it is approximately 0.29 ωβ. For a general smooth beam shape, the catalog.
Electromagnetic waves in self-gravitating, strongly coupled magnetized degenerate plasma

Abstract The linear propagation of the low-frequency (compared to the electron gyrofrequency) electromagnetic (EM) waves in a self-gravitating, strongly coupled magnetized plasma with ultra-relativistic degenerate electron fluid is investigated. It is found that the dispersion properties of the EM waves and stability criteria for such a degenerate plasma are significantly modified by the effects of the ultra-relativistic degenerate electron pressure, strong co-relation among extremely dense ion fluid, and the direction of the EM wave propagation relative to the ambient magnetic field direction. The relevance of our investigation to stability of white dwarf stars is briefly discussed. It is particularly seen here that the cores of such stars are stable for the class of gravito-electrodynamic waves that are analyzed for the characteristic ranges of relevant physical parameters.
Statistical equilibrium states for two-dimensional flows

We explain the emergence of organized structures in two-dimensional turbulent flows by a theory of equilibrium statistical mechanics. This theory takes into account all the known constants of the motion for the Euler equations. The microscopic states are all the possible vorticity fields, while a macroscopic state is defined as a probability distribution of vorticity at each point of the domain, which describes in a statistical sense the fine-scale vorticity fluctuations. The organized structure appears as a state of maximal entropy, with the constraints of all the constants of the motion. The vorticity field obtained as the local average of this optimal macrostate is a steady solution of the Euler equation. The variational problem provides an explicit relationship between stream function and vorticity, which characterizes this steady state. Inertial structures in geophysical fluid dynamics can be predicted, using a generalization of the theory to potential vorticity.
Penumbral structure and kinematics from high-spatial-resolution observations of $\ion{Ca}{II}$ K

High-spatial-resolution spectra of the Ca ii K line obtained with the Swedish Vacuum Solar Telescope (SVST) on La Palma are used to study the penumbra of a sunspot. The observed radiation tem- peratures in the Ca ii K wing are used to derive the temperature stratication of ne-structure elements in the penumbra. It is found that in general, over the observed atmospheric depth range, penumbral structures keep their relative brightness identity with respect to their local surroundings, i.e., bright (dark) structures in the lower photosphere remain bright (dark) in the upper photosphere. Hot structures have a larger temperature dif- ference between the bottom and the top of the photosphere than cool structures. Three semi-empirical atmosphere models, a cool, hot and mean model, are presented as being representative for the temperature stratication of penumbral ne structure. The mean temperature distribution of the centre-side penumbra is found to be up to 50 K hotter in the higher photosphere as compared to the limb-side penumbra. Hot structures being more numerous in the centre-side penumbra can account for this dierence. These are primarily found near the outer penumbral boundary. It is suggested that the asymmetry can be explained by a dierential line-of-sight eect that is caused by isotherms in bright structures having in the higher photosphere a tilt angle of approximately 7 with the horizontal, pointing downward towards the outer boundary. Line blends in the extended Ca ii Kw ing are selected to study the Evershed eect and its height dependence. At a number of locations, the Evershed eect is found to be concentrated in channels which have a tendency to coincide with dark laments. A weak corre- lation between brightness and velocity signal is found but also a number of bright structures with a signicant Evershed signal. Simple numerical tests of flow channels in the penumbral atmosphere are performed to confront existing theoretical models with the observations. From these experiments it is found that the bulk of the flow must be concentrated in the lower atmospheric layers, i.e., below 200 km, and must have a velocity not higher than 6 km s 1 . A channel width of 200 km is found to give the best reproduction of the observed velocities, so that the flow is either concentrated in a single channel or in a bundle of narrower channels. No direct indication is found of the Evershed channels being elevated above the continuum, and it is estimated that the flow channels reach down to at least 50 km above the continuum.
Corrections for cluster-plot slop.

Cluster-plot designs, including the design used by the Forest Inventory and Analysis program of the USDA Forest Service (FIA), are attended by a complicated boundary slopover problem. Slopover occurs where inclusion zones of objects of interest cross the boundary of the area of interest. The dispersed nature of inclusion zones that arise from the use of cluster plots precludes the use of most of the slopover-correction methods that apply to solitary plots. One exception is the walkthrough method, which corrects for slopover bias in radially symmetric cluster-plot designs. In this article, we provide a modification of the walkthrough method, the "walkabout method," which is applicable to some asymmetric cluster-plot designs, such as the one used by FIA. We also present two general correction methods, the "vectorwalk method" and the "reflection method," both of which are applicable to cluster-plot designs with satellite subplots arranged in a regular or irregular pattern. The reflection method has two sets of protocols, one that applies to radially symmetric designs and to asymmetric designs with random orientation; the other set applies to asymmetric designs with fixed orientation. Both the vectorwalk and reflection methods incorporate the walkthrough method on a subplot-by-subplot basis. All four methods correct for slopover bias for straight or curved boundaries, and where work outside the tract is impossible. FOR . S CI. 52(1):55-66. LUSTER-PLOT DESIGNS, which are widely used to estimate forest inventories, tend to complicate the problem known variously as slopover, boundary overlap, or edge effect. Slopover occurs where inclusion zones of objects of interest cross the boundary of the area of interest. Slopover can lead to bias in estimates unless cor- rective measures are taken. In this article we describe four methods that solve the slopover problem for cluster plots. The walkthrough method (Ducey et al. 2004) solves the problem for radially symmetric cluster-plot designs, and a new variant of the walkthrough method—the walkabout method—solves the problem for some asymmetric cluster- plot designs, including the design used by the USDA Forest Service in its nationwide Forest Inventory and Analysis (FIA) program. We also present two general methods, the vectorwalk and reflection methods, that solve the slopover problem for both symmetric and asymmetric cluster-plot designs, including the FIA design. Finally, we discuss and compare the practical implications of the four correction methods, and we discuss the choice of symmetric versus asymmetric designs. Sampling sans Slopover
Stability of a reset control system under constant inputs

Reset controllers are standard linear compensators equipped with mechanism to instantaneously reset their states. With respect to pure linear control, there is evidence that this reset action is capable of improving control system tradeoffs. This paper's objective is to analyze the stability of a particular example of reset control system when excited by constant inputs. Our main result shows that the equilibrium point of the closed-loop dynamics is asymptotically stable.
Analysis of SAW interdigital transducers as waveguides with N acoustic regions

Using the planar waveguide concept in surface acoustic wave (SAW) technology is often advantageous when the modeling of transversely distributed phenomena is indispensable for an accurate design of SAW devices. This is especially true when complex multi-track structures such as transversely coupled resonator filters (TCRF's) are under consideration where, e.g., transverse velocity and stiffness profiles have to be incorporated in the device simulation. The interdigital transducers (IDT's) and the reflector gratings composing those devices behave as planar waveguides supporting in principle all kinds of modes such as bound, semi-bound and radiation modes. Therefore, to model these SAW propagation effects, we subdivide the SAW structures in transverse direction into several parallel waveguiding channels (N regions), and take, as the wave-describing quantity, a two-dimensional scalar potential function. By doing so, we obtain a complete set of orthonormal modes into which an arbitrary transverse excitation function can be expanded in order to study its propagation. The general mode spectrum includes a discrete spectrum of bound modes and continuous spectra of semi-bound and radiation modes, respectively. We calculate all types of modes by making use of the stack matrix technique. The present work provides some results in the simulation of waveguides with N acoustic regions using the complete analysis of general SAW multi-channel structures presented previously.