75,722 research outputs found
Astronomy Letters, V. 28, I. 07
No full textleave(s) : ill; 28 cm.Astronomy Letters -- July 2002
Volume 28, Issue 7, pp. 423-493
Do the Fundamental Constants Vary in the Course of Cosmological Evolution?
A. V. Ivanchik, E. Rodriguez, P. Petitjean, and D. A. Varshalovich
pp. 423-427 Full Text: PDF (161 kB)
A Simple Model for the Evaporation of Black Holes at Final Stages
S. O. Alexeyev, A. Barrow, G. Bowdole, M. V. Sazhin, and O. S. Khovanskaya
pp. 428-433 Full Text: PDF (169 kB)
On the Equation of State for the Lambda Field
D. I. Podolsky
pp. 434-437 Full Text: PDF (133 kB)
Magnetic Fields of Active Galactic Nuclei and Quasars: Redshift Dependence
Yu. N. Gnedin and N. A. Silant'ev
pp. 438-442 Full Text: PDF (146 kB)
A Spectroscopic Study of the Peculiar Galaxy UGC 5600
L. V. Shalyapina, A. V. Moiseev, and V. A. Yakovleva
pp. 443-453 Full Text: PDF (552 kB)
Kinematic Parameters of Young Subsystems and the Galactic Rotation Curve
M. V. Zabolotskikh, A. S. Rastorguev, and A. K. Dambis
pp. 454-464 Full Text: PDF (266 kB)
Analytic Formulas for the Mass-Transfer Rate and the Evolution of a Close Binary System of Neutron (Degenerate) Stars
V. S. Imshennik and D. V. Popov
pp. 465-475 Full Text: PDF (253 kB)
On the Production of Chemical Elements Beyond the Iron Peak
I. V. Panov and V. M. Chechetkin
pp. 476-487 Full Text: PDF (247 kB)
On the Acceleration of Solar-Flare Charged Particles in a Collapsing Magnetic Trap with an Electric Potential
V. A. Kovalev and B. V. Somov
pp. 488-493 Full Text: PDF (166 kB)The content contained herein is maintained and curated by the Preservation Department.This record is revised and maintained by the content administrators from the Cataloging & Metadata Department
Astronomy Letters, V. 28, I. 07
No full textAstronomy Letters -- July 2002
Volume 28, Issue 7, pp. 423-493
Do the Fundamental Constants Vary in the Course of Cosmological Evolution?
A. V. Ivanchik, E. Rodriguez, P. Petitjean, and D. A. Varshalovich
pp. 423-427 Full Text: PDF (161 kB)
A Simple Model for the Evaporation of Black Holes at Final Stages
S. O. Alexeyev, A. Barrow, G. Bowdole, M. V. Sazhin, and O. S. Khovanskaya
pp. 428-433 Full Text: PDF (169 kB)
On the Equation of State for the Lambda Field
D. I. Podolsky
pp. 434-437 Full Text: PDF (133 kB)
Magnetic Fields of Active Galactic Nuclei and Quasars: Redshift Dependence
Yu. N. Gnedin and N. A. Silant'ev
pp. 438-442 Full Text: PDF (146 kB)
A Spectroscopic Study of the Peculiar Galaxy UGC 5600
L. V. Shalyapina, A. V. Moiseev, and V. A. Yakovleva
pp. 443-453 Full Text: PDF (552 kB)
Kinematic Parameters of Young Subsystems and the Galactic Rotation Curve
M. V. Zabolotskikh, A. S. Rastorguev, and A. K. Dambis
pp. 454-464 Full Text: PDF (266 kB)
Analytic Formulas for the Mass-Transfer Rate and the Evolution of a Close Binary System of Neutron (Degenerate) Stars
V. S. Imshennik and D. V. Popov
pp. 465-475 Full Text: PDF (253 kB)
On the Production of Chemical Elements Beyond the Iron Peak
I. V. Panov and V. M. Chechetkin
pp. 476-487 Full Text: PDF (247 kB)
On the Acceleration of Solar-Flare Charged Particles in a Collapsing Magnetic Trap with an Electric Potential
V. A. Kovalev and B. V. Somov
pp. 488-493 Full Text: PDF (166 kB)Archived web conten
Low Temperature Physics V. 23, I. 04
No full textLow Temperature Physics -- April 1997
Volume 23, Issue 4, pp. 267-353
Magnetization relaxation in superconducting fulleride K3C60 single crystals
V. A. Buntar, F. M. Sauerzopf, H. W. Weber, A. G. Buntar, H. Kumani, and M. Haluska
Full Text: PDF (157 kB)
Peculiarities of resistive properties of layered superconductors in a magnetic field
A. M. Grishin, Yu. V. Medvedev, and K. B. Rao
Full Text: PDF (56 kB)
Superconductivity effects in hopping conductivity of La2CuO4 single crystal with excess oxygen
B. I. Belevtsev, N. V. Dalakova, and A. C. Panfilov
Full Text: PDF (214 kB)
Superconducting properties of YBaCuO thin films obtained by thermocycling
K. N. Yugay, G. M. Seropjan, A. A. Skutin, and K. K. Yugay
Full Text: PDF (116 kB)
Interaction of electromagnetic waves in a hard superconducting plate with unilateral excitation
I. O. Lyubimova, I. V. Baltaga, A. A. Kats, V. A. Yampolskii, and F. Perez-Rodriguez
Full Text: PDF (186 kB)
Manifestations of non-Heisenberg interactions in the temperature dependence of the NMR frequency of a NiCl2 crystal
V. M. Kalita and A. F. Lozenko
Full Text: PDF (58 kB)
Ultralow-temperature relaxation of far nuclei in solids via dipole reservoir of own nuclei of paramagnetic centers
D. A. Kostarov and N. P. Fokina
Full Text: PDF (103 kB)
Metamagnetism in perovskites RMnO3 + x (R=Gd, Tb, Dy)
O. Ya. Troyanchuk, N. V. Kasper, H. Szymczak, and A. Nabialek
Full Text: PDF (130 kB)
Peculiarities in the electron properties of delta-layers in epitaxial silicon. III. Electron–phonon relaxation
V. Yu. Kashirin, Yu. F. Komnik, A. S. Anopchenko, O. A. Mironov, C. J. Emeleus, and T. E. Whall
Full Text: PDF (151 kB)
Contact conductivity oscillations of a 2D electron system in a magnetic field
V. B. Shikin
Full Text: PDF (87 kB)
Magnetic and electrostatic Aharonov–Bohm effects in a pure mesoscopic ring
M. V. Moskalets
Full Text: PDF (77 kB)
Nonlinear resonant tunneling through doubly degenerate state of quantum well
V. N. Ermakov and E. A. Ponezha
Full Text: PDF (132 kB)
Anyon exciton: Spherical geometry
V. M. Apalkov and D. M. Apalkov
Full Text: PDF (117 kB)
Relaxation and recombination channels of formation of luminescent states in a neon crystal: Evidence of electron self-trapping
A. G. Belov, G. M. Gorbulin, I. Ya. Fugol', and E. M. Yurtaeva
Full Text: PDF (197 kB)
Low-temperature plasticity of dilute solid solutions of Ne in n-H2
L. A. Alekseeva, M. A. Strzhemechny, and Yu. V. Butenko
Full Text: PDF (201 kB)
The role of La atoms in the formation of a low-temperature heat-capacity anomaly in cuprates La2CuO4,La2 – xMxCuO4(M = Sr, Ba) and Nd2 – xLaxCuO4
K. A. Kvavadze, M. M. Nadareishvili, G. G. Basilia, D. D. Igitkhanishvili, L. A. Tarkhnishvili, and Sh. V. Dvali
Full Text: PDF (213 kB)
On the lowest magnetocapacity of a 2D electron system
V. B. Shikin and S. S. Nazin
Full Text: PDF (78 kB)
Noncollinear spin configuration induced by a magnetic field in the surface gadolinium layer of multilayered Gd/Fe films
S. L. Gnatchenko, A. B. Chizhik, D. N. Merenkov, V. V. Eremenko, H. Szymczak, R. Szymczak, K. Fronc, and R. Zuberek
Full Text: PDF (79 kB)
High-density effects due to interaction of self-trapped exciton with (Ba, 5p) core hole in BaF2 at low temperature
M. A. Terekhin, N. Yu. Svechnikov, S. Tanaka, S. Hirose, and M. Kamada
Full Text: PDF (76 kB)
Time-resolved luminescent spectra of J-aggregates with exciton traps
Yu. V. Malyukin
Full Text: PDF (98 kB)Archived web conten
Journal of Experimental and Theoretical Physics V. 84, I. 03
No full textJournal of Experimental and Theoretical Physics -- March 1997
Volume 84, Issue 3, pp. 421-634
Consistent treatment of color transparency effects in diffractive electroproduction of vector mesons off nuclei
O. Benhar, S. Fantoni, N. N. Nikolaev, and B. G. Zakharov
Full Text: PDF (370 kB)
Reduction of the finite grand unification theory to the minimal supersymmetric standard model
I. N. Kondrashuk
Full Text: PDF (132 kB)
Resonant scattering of three-level Rydberg atoms in a microwave field
A. V. Bezverbnyi, I. M. Beterov, A. M. Tumaikin, and I. I. Ryabtsev
Full Text: PDF (270 kB)
Exact nonrelativistic expressions for the tensor for scattering of light by atoms
M. A. Preobrazhenskii
Full Text: PDF (177 kB)
Quantum kinetic Boltzmann equation taking into account the resonant exchange of excitations
T. L. Andreeva and P. L. Rubin
Full Text: PDF (113 kB)
Combined configuration-superposition and many-particle perturbation calculations for atoms with two valence electrons
M. G. Kozlov and S. G. Porsev
Full Text: PDF (112 kB)
Spontaneous and induced Cherenkov radiation generated by electrons in cylindrical dielectrics
N. K. Zhevago and V. I. Glebov
Full Text: PDF (233 kB)
Helium ionization with excitation of the atom accompanied by absorption and scattering of high-energy photons
M. Ya. Amus'ya and A. I. Mikhailov
Full Text: PDF (150 kB)
Comparison of methods for calculating turbulent diffusion coefficients
N. A. Silant'ev
Full Text: PDF (146 kB)
Investigation of the turbulent mixing of thin layers of materials of different density during the laser acceleration of flat multilayer targets in the Iskra-4 facility
V. A. Andronov, S. A. Bel'kov, A. V. Bessarab, I. N. Voronich, S. G. Garanin, A. A. Gorbunov, V. N. Derkach, G. V. Dolgoleva, A. I. Zaretskii, V. M. Izgorodin, B. N. Ilyushechkin, G. A. Kirillov, G. G. Kochemasov, Yu. V. Kuratov, V. I. Lazarchuk, V. A. Lebedev, V. M. Murugov, L. S. Mkhitar'yan, A. V. Okutin, S. I. Petrov, A. V. Pinegin, N. N. Rukavishnikov, A. N. Razin, A. V. Ryadov, A. V. Senik, N. A. Suslov, S. A. Sukharev, and V. A. Tokarev
Full Text: PDF (244 kB)
Creation of ordered structures in a classical thermal plasma containing macroparticles: experiment and computer simulation
V. E. Fortov, V. S. Filinov, A. P. Nefedov, O. F. Petrov, A. A. Samaryan, and A. M. Lipaev
Full Text: PDF (217 kB)
Interaction of a high-power laser beam with low-density porous media
A. E. Bugrov, S. Yu. Gus'kov, V. B. Rozanov, I. N. Burdonskii, V. V. Gavrilov, A. Yu. Gol'tsov, E. V. Zhuzhukalo, N. G. Koval'skii, M. I. Pergament, and V. M. Petryakov
Full Text: PDF (9643 kB)
Nonlinear repolarization processes in ferroelectric liquid-crystal thin films
S. A. Pikin, E. I. Demikhov, E. S. Pikina, and M. V. Gorkunov
Full Text: PDF (295 kB)
The metal–insulator transition and the phase transition in metal–ammonia solutions
A. A. Likal'ter
Full Text: PDF (146 kB)
Surface ordering near the smectic-A–smectic-C transition in thin, free-standing, liquid-crystal films
V. K. Dolganov, E. I. Demikhov, R. Fouret, and C. Gors
Full Text: PDF (83 kB)
The magnetic field and energy of an Abrikosov vortex in an anisotropic London superconductor
I. M. Dubrovskii
Full Text: PDF (172 kB)
The energy spectrum of quadrupole impurity centers of different types in antiferromagnets
M. A. Ivanov, V. Ya. Mitrofanov, and A. Ya. Fishman
Full Text: PDF (200 kB)
Cyclotron resonance in the organic conductor (BEDO-TTF)2ReO4(H2O) in the millimeter wavelength band
S. V. Demishev, A. V. Semeno, N. E. Sluchanko, N. A. Samarin, I. B. Voskoboinikov, M. V. Kartsovnik, A. E. Kovalev, and N. D. Kushch
Full Text: PDF (153 kB)
Dynamic properties of an incommensurate charge density wave in monoclinic TaS3 at low temperatures
F. Ya. Nad' and P. Monceau
Full Text: PDF (163 kB)
On the theory of quantum interference between inelastic and elastic electron scattering events
V. V. Rumyantsev, E. V. Orlenko, and B. N. Libenson
Full Text: PDF (237 kB)
Propagation of magnetostatic waves in unsaturated ferrite films with a strip domain structure
A. V. Vashkovskii, É. G. Lokk, and V. I. Shcheglov
Full Text: PDF (277 kB)
Dynamic and stimulated rf echo in high-Tc superconducting powders
A. V. Drobinin and Yu. M. Tsipenyuk
Full Text: PDF (426 kB)
Effect of an alternating field on the relaxation of Effect of an alternating field on the relaxation of magnetic flux in a Josephson medium
É. V. Matizen, P. P. Bezverkhii, and V. G. Martynets
Full Text: PDF (159 kB)
Magnetization of a diffusive ring: Beyond the perturbation theory
V. V. Afonin and Yu. M. Galperin
Full Text: PDF (202 kB)
Electrodynamics of hard superconductors in crossed magnetic fields
I. F. Voloshin, A. V. Kalinov, S. E. Savel'ev, L. M. Fisher, V. A. Yampolskii, and F. Perez Rodriguez
Full Text: PDF (147 kB)
Magnetic fields at 181Ta nuclei in Laves phases of RFe2 (R = Nd, Pr, Sm, Gd, Dy, Yb, Lu)
A. A. Sorokin, B. A. Komissarova, G. K. Ryasnyi, L. G. Shpin'kova, Z. Z. Aksel'rod, A. V. Tsvyashchenko, E. N. Shirani, and L. N. Fomicheva
Full Text: PDF (132 kB)
A hybrid-phonon resonance in a quasi-two-dimensional nanostructure
V. A. Margulis
Full Text: PDF (261 kB)
Drag effects in a two-layer system of spatially separated electrons and excitons
Yu. E. Lozovik and M. V. Nikitkov
Full Text: PDF (153 kB)
Current–voltage characteristics of tunnel junctions between superconductors with anisotropic pairing
Yu. S. Barash and A. A. Svidzinskii
Full Text: PDF (383 kB)Archived web conten
Modeling and forecasting gender-based violence through machine learning techniques
No full textGender-Based Violence (GBV) is a serious problem that societies and governments must address using all applicable resources. This requires adequate planning in order to optimize both resources and budget, which demands a thorough understanding of the magnitude of the problem, as well as analysis of its past impact in order to infer future incidence. On the other hand, for years, the rise of Machine Learning techniques and Big Data has led different countries to collect information on both GBV and other general social variables that in one way or another can affect violence levels. In this work, in order to forecast GBV, firstly, a database of features related to more than a decade’s worth of GBV is compiled and prepared from official sources available due to Spain’s open access. Then, secondly, a methodology is proposed that involves testing different methods of features selection so that, with each of the subsets generated, four techniques of predictive algorithms are applied and compared. The tests conducted indicate that it is possible to predict the number of GBV complaints presented to a court at a predictive horizon of six months with an accuracy (Root Median Squared Error) of 0.1686 complaints to the courts per 10,000 inhabitants—throughout the whole Spanish territory—with a Multi-Objective Evolutionary Search Strategy for the selection of variables, and with Random Forest as the predictive algorithm. The proposed methodology has also been successfully applied to three specific Spanish territories of different populations (large, medium, and small), pointing to the presented method’s possible use elsewhere in the world
On the possibility of predicting glycaemia ‘on the fly’ with constrained IoT devices in type 1 diabetes mellitus patients
No full textType 1 Diabetes Mellitus (DM1) patients are used to checking their blood glucose levels several times per day through finger sticks and, by subjectively handling this information, to try to predict their future glycaemia in order to choose a proper strategy to keep their glucose levels under control, in terms of insulin dosages and other factors. However, recent Internet of Things (IoT) devices and novel biosensors have allowed the continuous collection of the value of the glucose level by means of Continuous Glucose Monitoring (CGM) so that, with the proper Machine Learning (ML) algorithms, glucose evolution can be modeled, thus permitting a forecast of this variable. On the other hand, glycaemia dynamics require that such a model be user-centric and should be recalculated continuously in order to reflect the exact status of the patient, i.e., an 'on-the-fly' approach. In order to avoid, for example, the risk of being disconnected from the Internet, it would be ideal if this task could be performed locally in constrained devices like smartphones, but this would only be feasible if the execution times were fast enough. Therefore, in order to analyze if such a possibility is viable or not, an extensive, passive, CGM study has been carried out with 25 DM1 patients in order to build a solid dataset. Then, some well-known univariate algorithms have been executed in a desktop computer (as a reference) and two constrained devices: a smartphone and a Raspberry Pi, taking into account only past glycaemia data to forecast glucose levels. The results indicate that it is possible to forecast, in a smartphone, a 15-min horizon with a Root Mean Squared Error (RMSE) of 11.65 mg/dL in just 16.15 s, employing a 10-min sampling of the past 6 h of data and the Random Forest algorithm. With the Raspberry Pi, the computational effort increases to 56.49 s assuming the previously mentioned parameters, but this can be improved to 34.89 s if Support Vector Machines are applied, achieving in this case an RMSE of 19.90 mg/dL. Thus, this paper concludes that local on-the-fly forecasting of glycaemia would be affordable with constrained devices
Utility of big data in predicting short-term blood glucose levels in type 1 diabetes mellitus through machine learning techniques
No full textMachine learning techniques combined with wearable electronics can deliver accurate short-term blood glucose level prediction models. These models can learn personalized glucose-insulin dynamics based on the sensor data collected by monitoring several aspects of the physiological condition and daily activity of an individual. Until now, the prevalent approach for developing data-driven prediction models was to collect as much data as possible to help physicians and patients optimally adjust therapy. The objective of this work was to investigate the minimum data variety, volume, and velocity required to create accurate person-centric short-term prediction models. We developed a series of these models using different machine learning time series forecasting techniques suitable for execution within a wearable processor. We conducted an extensive passive patient monitoring study in real-world conditions to build an appropriate data set. The study involved a subset of type 1 diabetic subjects wearing a flash glucose monitoring system. We comparatively and quantitatively evaluated the performance of the developed data-driven prediction models and the corresponding machine learning techniques. Our results indicate that very accurate short-term prediction can be achieved by only monitoring interstitial glucose data over a very short time period and using a low sampling frequency. The models developed can predict glucose levels within a 15-min horizon with an average error as low as 15.43 mg/dL using only 24 historic values collected within a period of sex hours, and by increasing the sampling frequency to include 72 values, the average error is reduced to 10.15 mg/dL. Our prediction models are suitable for execution within a wearable device, requiring the minimum hardware requirements while at simultaneously achieving very high prediction accuracy
Concejals de l'Ajuntament preparats per jugar un partit de Futbol Sala i de bàsquet
No full textConcejals: Juanito, Jaime Mundo, J. V Rambla, Solá y Miguel Cornelles, Escribano, Enrique Escuder, Serrano, Angel Rodriguez de Mier i Vicent Piñan
Jacobus M. Ramirez, De hominis beatitudine. In I-II Summae theologiae divi Thomae commentaria (Qq. I-V). Editio praeparata a Victorino Rodriguez, o.p
No full textHissette Roland. Jacobus M. Ramirez, De hominis beatitudine. In I-II Summae theologiae divi Thomae commentaria (Qq. I-V). Editio praeparata a Victorino Rodriguez, o.p. In: Revue Philosophique de Louvain. Quatrième série, tome 72, n°13, 1974. p. 200
Jacobus M. Ramirez, De hominis beatitudine. In I-II Summae theologiae divi Thomae commentaria (Qq. I-V). Editio praeparata a Victorino Rodriguez, o.p
No full textHissette Roland. Jacobus M. Ramirez, De hominis beatitudine. In I-II Summae theologiae divi Thomae commentaria (Qq. I-V). Editio praeparata a Victorino Rodriguez, o.p. In: Revue Philosophique de Louvain. Quatrième série, tome 72, n°13, 1974. p. 200
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