| Control of Uncertain Systems under Constraints: Switching Horizon Predictive Control of Persistently Disturbed Input-Saturated Plants |
01 DEC 2006 |
15 pages |
| Authors:
Edoardo Mosca; FLORENCE UNIV (ITALY)
|
 | In order to provide computationally affordable predictive control algorithms, predictive switching logic schemes are considered whereby a feedback-gain is switched-on at any time from a family of candidate feedback-gains so as to control a discrete-time input-saturated LTI system possibly subject to persistent bounded disturbances of unknown arbitrary magnitude. It is constructively shown that such schemes do exist which ensure, along with good tracking performance, global asymptotic and semi-global exponential stability ... |
|
| Heat Transfer Modelling in Gas Turbine Stage |
MAR 2003 |
19 pages |
| Authors:
F. Martelli; P. Adami; E. Belardini; FLORENCE UNIV (ITALY)
|
| Two 3D CFD solvers for internal flow applications are briefly presented and applied for the investigation of heat transfer problems in gas turbine components. The numerical approaches considered are respectively based on a structured (XFLOS) and on an unstructured (HybFlow) methods. The two solvers are briefly described in terms of discretization scheme and turbulence modelling features for gas-turbine applications. Information are also provided concerning the unsteady approach, the multi-blok extension ... |
|
| 14TH International Symposium on Air-Breathing Engines (XIV ISABE). Papers (CD-ROM) |
11 SEP 1999 |
|
| Authors:
FLORENCE UNIV (ITALY)
|
 | ELECTRONIC FILE CHARACTERISTICS: 384 files; hyperlinked PDF document and Adobe Acrobat software. PHYSICAL DESCRIPTION: 1 computer laser optical disc; 4 3/4 in.; 346MB. SYSTEMS DETAIL NOTE: Requires CD-ROM drive. ABSTRACT: The Final Proceedings for 14th International Symposium on Air-Breathing Engines (XIV ISABE), 5 September 1999 - 10 September 1999. All aspects of Air-Breathing engines will be covered such as Science, Engineering, Manufacturing, Testing, Cost and Business, and Technologies, including Fuels ... |
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| Supplement to the Proceedings of International Symposium on Air-Breathing Engines (14th), held in Florence, Italy, 5-10 September 1999 (CD-ROM) |
SEP 1999 |
|
| Authors:
FLORENCE UNIV (ITALY)
|
| ELECTRONIC FILE CHARACTERISTICS: 24 files; Adobe Acrobat PDF. PHYSICAL DESCRIPTION: 1 computer laser optical disc; 4 3/4 in.; 10.4 MB. SYSTEMS DETAIL NOTE: IBM-clone PC-compatible; requires Adobe Acrobat reader. ABSTRACT: The Final Proceedings for the 14th International Symposium on Air-Breathing Engines (XIV ISABE), 5 September 1999 - 10 September 1999. All aspects of Air Breathing engines will be covered such as Science, Engineering, Manufacturing. Testing, Cost and Business, Technologies to ... |
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| Metal Ions In Biological Systems. EUROBIC II |
1994 |
376 pages |
| Authors:
FLORENCE UNIV (ITALY)
|
| The Final Proceedings for Second European bioinorganic chemistry conference, 30 August 1994 - 3 September 1994. |
|
| Use of Target Spectrum for Detection Enhancement and Identification, |
SEP 1991 |
|
| Authors:
S. Pardini; P. F. Pellegrini; P. Piccini; FLORENCE UNIV (ITALY)
|
| The paper deals with modulation on the echo signal generated by rotating machinery of an air target. An extensive measurement campaign has been carried out by means of an Air Traffic Control radar and some preliminary results are presented. The problem of target spectra characterization and exploitation for detection enhancement and target identification, is considered in relation with the limitation imposed by the present radar features. Some considerations regarding the ... |
|
| International Workshop on Gravel-Bed Rivers. Dynamics of Gravel-Bed Rivers (3rd), held in Firenze - Poggio a Caiano Italy on September 24-28, 1990 |
31 JUL 90 |
549 pages |
| Authors:
FLORENCE UNIV (ITALY)
|
| Session topics include: Sediment yield dynamics; Debris flow dynamics; Alluvial fan and steep stream sediment processes; Channel morphology dynamics; Braided channel dynamics; Downstream fining; Grain size distribution; Entrainment and movement at low transport rates; Armouring; Movement of mixed- sized sediment; New techniques of monitoring particle movement; Modeling sediment transport; Bed dynamics; Analysis of historical changes; and Human impacts. Keywords: Mathematical models; Fluid dynamics; Gravel; River beds; Geomorphology; Floods/deposition; Topography; Particle ... |
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| Nuclear and Electron Relaxation. Chianti Workshop on Magnetic Resonance (3rd) Held in San Miniato, Pisa, Italy on May 28-June 2, 1989 |
JUN 89 |
117 pages |
| Authors:
FLORENCE UNIV (ITALY)
|
|
| International Conference on Optical and Millimeter Wave Propagation and Scattering in the Atmosphere Held in Florence, Italy on 27-30 May 1986 |
MAY 86 |
410 pages |
| Authors:
FLORENCE UNIV (ITALY)
|
| Partial contents: Scintillation Theory: An Elementary Derivation of the Saturation of Optical Scintillation; Computations of the Effect of Atmospheric Turbulence on Laser Beam Propagation; Two-Frequency Scintillation: Two Color Correlation of Scintillations; Imaging and Scintillation: Speckle Interferometry and Speckle Imaging; Scintillation on High- and Low-Elevation Satellite Propagation Paths; Coherence Theory: Classical Radiometry: a Short Wavelength Limit for a General Mapping of Cross-Spectral Densities in Second- Order Coherence Theory; Lidar: Remote Sensing ... |
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| Effect of Multiple Scattering on the Propagation of Light Beams in Dense Nonhomogeneous Media, |
FEB 1984 |
|
| Authors:
P. Bruscaglioni; A. Ismaelli; L. Lo Porto; G. Zaccanti; FLORENCE UNIV (ITALY)
|
| Calculations performed by means of a Monte Carlo method show that the contribution of forward single and multiple scattering to the received power in an optical transmission link through a turbid atmosphere increases when the scattering medium is more concentrated near the receiver. An experimental check of this result is also presented. (Author) |
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| Probabilistic Limit Analysis and Design of Structures and Earthworks: The Static Approach |
SEP 1975 |
|
| Authors:
Giuliano Augusti; Alessandro Baratta; FLORENCE UNIV (ITALY)
|
| This paper presents, firstly, a brief review of some recent works by the authors on probabilistic limit analysis, and in particular the two theorems that allow to bound the probability of collapse of a structure (or earthwork) when the acting forces are given, respectively through the kinematic and static (or equilibrium) approach, i.e. thorugh considerations of possible modes of failure (or collapse mechanisms) and equilibrated stress fields. Recognized that the ... |
|
| ON THE REGULARIZATION OF A NONLINEAR ILL-POSED PROBLEM IN BANACH SPACES. |
24 MAR 1969 |
|
| Authors:
Massimo Furi; Alfonso Vignoli; FLORENCE UNIV (ITALY)
|
| Two theorems are given concerning the regularization of the nonlinear ill-posed problem T(x) = y, where T is a weakly continuous mapping from a uniformly convex Banach space X into a normed space Y. (Author) |
|
| NEUTRON LEAKAGE DELAY-TIME DISTRIBUTION IN REACTOR KINETICS, |
15 JAN 1969 |
|
| Authors:
A. Belleni-Morante; G. Busoni; M. Motta; FLORENCE UNIV (ITALY)
|
| An integro-differential kinetics equation is derived, involving the distribution of the neutron leakage delay-time. The results of calculations performed for two fast critical assemblies, using such equation, are then given. (Author) |
|
| A FIXED POINT THEOREM IN COMPLETE METRIC SPACES, |
1969 |
|
| Authors:
Massimo Furi; Alfonso Vignoli; FLORENCE UNIV (ITALY)
|
| A fixed point theorem for densifying and weakly F-contractive mappings of a complete metric space X into itself is given. (Author) |
|
| ON THE BEHAVIOR OF SOLUTIONS OF A RANDOMLY PERTURBED LINEAR DIFFERENTIAL EQUATION, |
1969 |
|
| Authors:
A. Lasota; A. Moro; FLORENCE UNIV (ITALY)
|
| A linear differential equation with a random perturbation is considered. It is proven that every open subset of the state space of the system described by the equation can be reached along motions with probability close to one. (Author) |
|
| A CONVEX PROGRAMMING PROBLEM IN BANACH SPACES AND APPLICATIONS TO OPTIMUM CONTROL THEORY, |
22 FEB 1968 |
|
| Authors:
R. Conti; FLORENCE UNIV (ITALY)
|
| A convex programming problem for a functional defined on a Banach space is solved, and necessary conditions are derived in the form of a maximum principle. Applications of the results are made to minimum final (or initial) distance and to minimum-effort problems connected with a control process described by a linear evolution equation. (Author) |
|
| ON ORDINARY DIFFERENTIAL EQUATIONS WITH INTERFACE CONDITIONS, |
27 JUL 1967 |
|
| Authors:
Roberto Conti; FLORENCE UNIV (ITALY)
|
|
| ON THE DELAY-TIME DISTRIBUTION FUNCTION IN COUPLED REACTOR KINETICS, |
10 JUL 1967 |
|
| Authors:
A. Belleni-Morante; FLORENCE UNIV (ITALY)
|
| The kinetic equations of a reactor composed of two loosely coupled cores were derived directly from a modified form of the transport equation. The existence of a delay time distribution function due to the energy distribution of interaction neutrons is proved. (Author) |
|
| RECENT TRENDS IN THE THEORY OF BOUNDARY VALUE PROBLEMS FOR ORDINARY DIFFERENTIAL EQUATIONS, |
25 APR 1967 |
|
| Authors:
Roberto Conti; FLORENCE UNIV (ITALY)
|
| The theory of boundary value problems for ordinary differential equations almost exclusively included, until a few years ago, problems with side conditions assigned over a compact interval of the idependent variable. By contrast, problems involving the behavior of solutions over non compact intervals were usually labelled as asymptotic. Recent developments of the theory show a tendency to reduce more and more this traditionally accepted distinction. The report gives an account ... |
|
| RESEARCH ON THE ASTRONOMICAL ORIENTATION OF EQUATORIAL LITTORAL AMPHIPODA. I. SOLAR ORIENTATION IN ONE SOMALIAN POPULATION OF TALORCHESTER MARTENSII WEBER (RICERCHE SULL'ORIENTAMEN TO ASTRONOMICO DI ANFIPODI LITORALI DELLA ZONA EQUATORIALE. I. L'ORIENTAME |
24 MAY 1964 |
|
| Authors:
A. Ercolini; FLORENCE UNIV (ITALY)
|
| The solar orientation of Talorchestia martensii Weber was investigated. The mechanism of solar orientation shows particular time variations of its correctness, due to the local astronomic circumstances. Animals tested immediately after collection, after having been kept under a normal artificial rhythm of light-darkness, or kept segregated in continuous darkness, showed systematic differences from the correct orientation. The existence of an innate correct directional tendency is confirmed in littoral Amphipods. The ... |
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| RESEARCH ON THE INFLUENCE OF THE NATURE OF THE LIGAND ON THE STEREOCHEMISTRY TRY OF THE NICKEL (II) AND OTHER 1ST ROW TRANSITION METAL COMPLEXES WITH SCHIFF BASES. |
01 MAY 1964 |
|
| Authors:
Luigi Sacconi; FLORENCE UNIV (ITALY)
|
| The solid and liquid state steric configurations of several bis-(N-alkylsalicylaldimino)-nickel (II) complexes were examined spectrophotometrically and by magnetic and dielectric polarization measurements. It was found that the n-propyl derivatives are planar, the t-butyl derivatives pseudo-tetrahedral, and the secalkyl derivatives either planar or pseudo-tetrahedral. Thermochemical, electronic, and steric implications are discussed. R-N-salicylaldimine-cobalt(III) complexes were found to exist in the trans-octahedral configuration only. |
|
| MANY ELEMENT LASERS. |
APR 1964 |
|
| Authors:
R. Pratesi; L. Ronchi; G. Toraldo di Francia; FLORENCE UNIV (ITALY)
|
| Theoretical and experimental results are reported, obtained with a solid-state laser consisting of many active elements in series. A statistical treatment is developed to derive the oscillation conditions. Asymptotic expressions are given of the threshold gain per unit length holding either for a very large number of elements or for inner surface reflectivities close to 1. It turns out that lossless reflections at the inner surfaces can increase the cavity ... |
|
| LASER CAVITIES TERMINATED BY DIFFRACTION GRATINGS. |
MAR 1964 |
|
| Authors:
L. Ronchi; A. M. Scheggi; FLORENCE UNIV (ITALY)
|
| A theoretical study is performed of the resonant modes of a laser cavity having end mirrors with periodic reflectivity. A particular example is examined in which the end mirrors are constituted by two identical strip diffraction gratings. The modes and the corresponding eigenvalues are evaluated in successive approximations. It was found that a particular frequency exists for which losses are very low, while neighboring frequencies suffer heavy losses. This effect ... |
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| RESEARCH ON THE ASTRONOMICAL ORIENTATION OF CRUSTACEA. |
10 OCT 1963 |
|
| Authors:
Leo Pardi; FLORENCE UNIV (ITALY)
|
|
| RESEARCH ON METEOR TRAIL ECHOES. |
SEP 1963 |
|
| Authors:
N. CARRARA; P. F. Checcacci; A. Consortini; M. E. De Langer; L. Ronchi; FLORENCE UNIV (ITALY)
|
| The status of the research in the meteor field performed at the Centro Microonde of C.N.R., Florence, Italy, is described. Purpose of the research is to derived information about the meteor flow from experimental data. However, it is still in progress, so that only few results are reported here. (Author) |
|
| RADAR-ECHO RATE FROM SHOWER METEORS. PART II: RANGE DISTRIBUTION, |
JUL 1963 |
|
| Authors:
A. Consortini; M. E. De Langer; FLORENCE UNIV (ITALY)
|
| The theoretical range distributions of the meteor echoes due to Perseids shower are calculated for four sets of values of the parameters and we compare them in order to establish the influences yielded by a variation of these parameters in the final results. Then a rough comparison is also done between theoretical and experimental range distributions to determine the theoretical range distribution which better fits the experimental data. (Author) |
|
| ATMOSPHERIC DISPERSION AND ABSORPTION OF MICROWAVES, |
APR 1963 |
|
| Authors:
O. Fagioli; G. Casini; FLORENCE UNIV (ITALY)
|
| Some methods are given to perform measurements of refractive index of gases at microwave frequency. A refractometer apparatus is described with two resonant cavities fed by a R.F. modulated klystron: one cavity is the reference for the stabilization of the klystron frequen cy over the first side band; the other one is tuned with the opposite side-band. Variations of refractive index are measured by means of the evaluation of the ... |
|
| FUNDAMENTAL RESEARCH ON ELECTROMAGNETIC THEORY AND MICROWAVE SPECTROSCOPY, |
MAR 1963 |
|
| Authors:
G. Toraldo DiFrancia; FLORENCE UNIV (ITALY)
|
| Contents: (1) Radiation from a charged particle in uniform straight motion through a stratified medium periodically loaded with conducting films, (2) Radiation from a charged particle in uniform straight motion through a periodic succession of dielectric slabs, (3) Radiation from a charged particle passing through a circular opening in a conducting screen, (4) Radiation from a charged particle at oblique incidence on a plane conduct ing film separating two dielectric ... |
|
| RADIATION FROM A CHARGED PARTICLE IN UNIFORM STRAIGHT MOTION THROUGH A PERIODIC SET OF DIELECTRIC PLATES, |
MAR 1963 |
|
| Authors:
A.M. Scheggi; FLORENCE UNIV (ITALY)
|
| The exact solution is given of the problem of transition radiation produced by the passage of a charged particle through an arbitrary number of dielectric slabs separated by vacuum spaces. Expressions for the electromagnetic fields and for the radiated energy have been found which are more general than those given by Garibyan. The expressions given in this report are valid for material slabs of arbitrary refractive index and for velocities ... |
|
| RADIATION FROM A CHARGED PARTICLE PASSING THROUGH A CIRCULAR OPENING IN A PERFECTLY CONDUCTING SCREEN, |
MAR 1963 |
|
| Authors:
L. Ronchi; FLORENCE UNIV (ITALY)
|
| The radiation arising in the passage of a charged particle in uniform straight motion through a circular opening in an ideally conducting plane screen, normal to the particle path, is investi gated. The exact solution of the problem is found, in terms of spheroidal functions. (Author) |
|
| RADIATION FOR A CHARGED PARTICLE AT OBLIQUE INCIDENCE, |
MAR 1963 |
|
| Authors:
L. Ronchi; G. Toraldo; FLORENCE UNIV (ITALY)
|
| The transition radiation is investigated, which is emitted by a charged particle in uniform straight motion, obliquely incident on a thin conducting film, separating two media with dif ferent refractive index. General formulas are given. Three particular cases are examined in detail. (Author) |
|
| THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF CYLINDRICAL OR TOROIDAL DIFFRACTION REFLECTORS, HAVING A WIDE APERTURE AND FIELD ANGLE, OPERATING WITH DIFFERENT FREQUENCIES AT DI-ENT FIELD ANGLES. |
31 FEB 1963 |
|
| Authors:
V. Russo; FLORENCE UNIV (ITALY)
|
| The research reported in this paper is concerned with cylindrical diffraction-reflector antennas, with circular mean cross-section. The first problem was to find how to vary the frequency with field angle. The antenna has been studied within the approximation of parageometrical optics. (Author) |
|
| THE SYNTHESIS OF UNSATURATED FLUOROCARBONS. |
DEC 1962 |
|
| Authors:
Paul Tarrant; John Savory; David Sayers; Frank Pisacane; Ward Oliver; FLORENCE UNIV (ITALY)
|
| A study has been made of the reaction of sodium nitrosyl with hexafluorobenzene but no nitroso pentafluorobenzene was formed. Two silanes containing the trifluorovinyl group have been synthesized. One of these, CF2CF(CH2)2Si(CH3)3 has been treated with NOCl but no nitroso com pound was formed. Gas-phase additions of NOCl with fluoroolefins has been continued. Trifluoro vinyllithium did not react with hexafluorobenzene to give perfluorostyrene. A study was made of the reaction ... |
|
| ELECTROMAGNETIC CONTROL OF THE ATTITUDE OF SPACE VEHICLES |
Dec 1962 |
123 pages |
| Authors:
P Bruscaglioni; A Consortini; FLORENCE UNIV (ITALY)
|
|
| CERENKOV RADIATION FROM A CHARGED PARTICLE IN UNIFORM STRAIGHT MOTION THROUGH A PARTICULAR STRATIFIED MEDIUM |
Nov 1962 |
45 pages |
| Authors:
L Ronchi; A M Scheggi; FLORENCE UNIV (ITALY)
|
|
| ON THE POSSIBILITY OF DISCERNING SPORADIC METEOR ECHOES AND SHOWER-METEOR ECHOES BY USING A WIDE-BEAM RADAR SET, |
SEP 1962 |
|
| Authors:
N. Carrara ; P. F. Checcacci ; A. Consortini ; L. Ronchi; FLORENCE UNIV (ITALY)
|
| The possibility of discerning sporadic meteor echoes and shower meteor echoes by using a wide-beam radar set is discussed on the basis of the data collected during Perseids activity on 11, 12, 13 August 1960. (Author) |
|
| DIFFRACTION OF AN EVANESCENT WAVE BY A METAL-STRIP GRATING. EXPERIMENTAL RESULTS |
Jul-1961 |
|
| Authors:
V RUSSO; G TASSINARIO; G TORALDO; FLORENCE UNIV (ITALY)
|
| Experiments are described which were concerned with the diffraction of an evanescent TM wave by a metal-strip grating. The evanescent wave was obtained by means of a dielectric-slab launcher. Several gratings with different values of spacing, width, inclination of the strips were employed. As a result, it was possible to select the grating which gives rise to a diffracted plane wave of the highest possible intensity in the range of ... |
|
| RESEARCH ON ELECTROMAGNETIC THEORY |
MAR 1961 |
|
| Authors:
G. Toraldo di Francia; G.C. CASINI; FLORENCE UNIV (ITALY)
|
| Contents: Research on microwave optics and on mechanical actions of electromagnetic waves Microwave optics A class of perfect systems for microwave optics Stepped zone mirror for microwaves A new microwave lens Mechanical actions of electromagnetic waves iffraction of electromagnetic waves by plane screens with directional conductivity Angular momentum of an electromagnetic ... |
|
| DETERMINATION OF THE DIRECTION CORRESPONDING TO THE MAXIMUM RATE OF RADAR ECHOES FROM METEOR TRAILS |
DEC 1960 |
|
| Authors:
Nello Carrara; Pier Francesco Checcacci; FLORENCE UNIV (ITALY)
|
| The height over the ground was determined corresponding, in a given direction, to the maximum density of echoes from meteor trails which can be detected by Radar. The direction was found corresponding to the maximum rate of radio echoes. The angle of such a direction with respect to the zenith of the Radar is found to be the equivalent of 57 degrees, while preceding results gave 45 degrees. The assumption ... |
|
| SCATTERING OF EVANESCENT WAVES BY CYLINDRICAL STRUCTURES |
OCT 1960 |
|
| Authors:
Laura Ronchi; VERA RUSSO; FLORENCE UNIV (ITALY)
|
| Research is presented on the diffraction of an electromagnetic evanescent wave by an infinitely conducting half plane and by an infinitely conducting cylinder of circular cross section. General formulas are given for the near and far fields. Scattering patterns are shown in several particular cases. This study is intended as a first step toward finding the best grating structure which makes it possible to abstract the greatest amount of energy, ... |
|
| OBSERVATIONS ON THE SATELLITES 1960 ETA 1 AND 1960 ETA 2 |
SEP 1960 |
|
| Authors:
PIER FRANCESCO CHECCACCI; FLORENCE UNIV (ITALY)
|
|
| OBSERVATIONS ON THE SATELLITE 1960 EPSILON 1 |
SEP 1960 |
|
| Authors:
P.F. CHECCACCI; FLORENCE UNIV (ITALY)
|
|
| RESEARCH ON METEOR BURST PROPAGATION |
SEP 1960 |
|
| Authors:
FLORENCE UNIV (ITALY)
|
| Contents: Improvements of meteorological radar Studies on increasing the pulse power by a signal synthesis method Studies on the system for signal noise ratio improvements The radar for meteor velocity measurements The meteor data elaboration Theoretical studies on velocity and deceleration of meteors Volume density of radio echoes from meteor trails Theory of meteor ablation The computation of meteor density |
|
| MAINTENANCE AND OPERATION OF A DOPPLER DATA RECORDING STATION. PART I: DOPPLER EFFECT MEASUREMENTS |
SEP 1960 |
|
| Authors:
Pier Francesco Checcacci; FLORENCE UNIV (ITALY)
|
| The use of Doppler effect methods for the tracking of the satellites was examined. Some of these methods require hypotheses on the motion of the vehicle and therefore can be employed only for vehicles having inertial motion. Others do not need hypotheses, a priori, on the motion and therefore can be applied to the tracking of propelled vehicles. The methods of the second type appear to assure high accuracy, of ... |
|
| ON THE DENSITY OF BRIGHT METEORS |
AUG 1960 |
|
| Authors:
FRANCO VERNIANI; FLORENCE UNIV (ITALY)
|
| The meteoric density was calculated by using ablation's theory in connection with 135 Whipple's photographic data (almost all concerning fireballs). Remarkable differences are found between sporadic and shower meteors and between different showers, so that it is probable that meteors differ considerably one from another also by origin, shape and composition. Almost the half of sporadic meteors results compact stone with a density Rho 3.38 g/cc; out of the others, ... |
|
| METEOR DATA BULLETIN NO. 2 |
MAY 1960 |
|
| Authors:
FLORENCE UNIV (ITALY)
|
|
| DESIGN, DEVELOPMENT AND TEST OF AN ADVANCED, FIXED POSITION RADIO ASTRONOMY ANTENNA |
APR 1960 |
|
| Authors:
P.F. CHECCACCI; L. RONCHI ABBOZZO; V. RUSSO; FLORENCE UNIV (ITALY)
|
|
| METEOR DATA BULLETIN NO. 1 |
APR 1960 |
|
| Authors:
FLORENCE UNIV (ITALY)
|
| Contents (Meteor radar data obtained at the Centro Microonde in April 1960): Hourly rate Distribution of duration Duty cycle Variations during the hours of the day Distance distribution Distribution as a function of the azimuth Panoramic representations Drifting echoes Meteor tablesAD-259 2879N6 AD-259 286Div. 16U (11 July 61) OTS price $4.60 Fordham U., New York. OBSERVATIONS ON THE PRESENT STATE OF PLAGUE AND PLAGUE CONTROL IN THE SOVIET UNION ... |
|
| ON METEOR ABLATION IN THE ATMOSPHERE |
MAR 1960 |
|
| Authors:
FRANCO VERNIANI; FLORENCE UNIV (ITALY)
|
|
| OBSERVATIONS ON THE QUADRANTID SHOWER |
MAR 1960 |
|
| Authors:
FLORENCE UNIV (ITALY)
|
| During the passage of a shower of Quadrantids, Radar was used with a photographic recording system. At the same time the echoes were observed on an oscilloscope. Observations were made from 30 December 1959 to 8 January 1960. A high percentage of the total number of echoes was received on January 3 and 4. Among the signals received during these two days, those which can be interpreted as echoes from ... |
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