Formation and development of the Ukrainian network of meteor radio observations

2021 ◽  
Vol 27 (3) ◽  
pp. 85-92
Author(s):  
F.I. Bushuev ◽  
◽  
M.P. Kaliuzhnyi ◽  
N.A. Kulichenko ◽  
A.V. Shulga ◽  
...  
Keyword(s):  
Remote Access ◽  
Frequency Range ◽  
Kinematic Parameters ◽  
Radio Range ◽  
Continuous Registration ◽  
Radio Signals ◽  
Current Monitoring ◽  
To Receive ◽  
E Mail ◽  
Meteor Radio

During the decade of research, the Research Institute “Mykolaiv Astronomical Observatory” (RI “MAO”) developed hardware and software for monitoring, extracting, and calculating the parameters of meteor phenomena using the forward scattering by meteor ionized trail of the signals of over-the-horizon FM-stations broadcasted in the frequency range of 88—108 MHz. This allowed creating a network of observations of meteor phenomena in the radio range, which consists of six stations located in Mykolaiv (three stations), Rivne, Lviv, and Hlukhiv. The stations have identical hardware and software. Yagi-Uda antennas with six or eight horizontal vibrators and SDR receivers based at RTR2832U microchip are used to receive radio signals. The station software performs continuous registration and analysis of received radio signals at the output of quadrature detectors of the receivers, automatic detection of moments of appearances of meteor reflections, formation, and sending by e-mail daily reports on detected meteor phenomena. Equipment setup and current monitoring of stations operations are carried out by the RI «MAO» using remote access to station computers via the Internet. Monthly reports on the number of meteor events recorded by each station are posted on the site of Radio Meteor Observation Bulletin (RMOB). The article presents the results, obtained by the network in 2017—2019, confirming a correspondence of daily variations in the number of meteors registered by network stations, to the known dependence (observation of meteors in the apex and antapex), as well as a correspondence between the expected characteristics (in time and intensity) of three meteor showers (Perseids, Geminids and Quadrantids) and that had been obtained by the network. Recommendations are also given in the article for additional research aimed at achieving the main goal, namely, expanding information about meteor phenomena, including the estimating of kinematic parameters (velocities, radiants) of meteoroids and their relationship with potentially hazardous asteroids.

scholarly journals The ING Seismic Network Databank (ISND) : a friendly parameters and waveform database

1995 ◽  
Vol 38 (2) ◽  
Author(s):  
S. Barba ◽  
R. Di Giovambattista ◽  
G. Smriglio
Keyword(s):  
Floppy Disk ◽  
Seismic Network ◽  
Acquisition System ◽  
Magnetic Media ◽  
Telephone Line ◽  
Network Database ◽  
Ascii Format ◽  
Mail Address ◽  
To Receive ◽  
E Mail

he Istituto Nazionale di Geofisica (ING) Seismic Network Database (ISND) includes over 300000 arrivaI times of Italian, Mediterranean and teleseismic earthquakes from 1983 to date. This database is a useful tool for Italian and foreign seismologists ( over 1000 data requests in the first 6 months of this year). Recently (1994) the ING began storing in the ISND, the digital waveforms associated with arri,Tal times and experimen- tally allowed users to retrieve waveforms recorded by the ING acquisition system. In this paper we describe the types of data stored and the interactive and batch procedures available to obtain arrivaI times and/or asso- ciated waveforms. The ISND is reachable via telephone line, P.S.I., Internet and DecNet. Users can read and send to their E-mail address alI selected earthquakes locations, parameters, arrivaI times and associated digital waveforms (in SAC, SUDS or ASCII format). For r;aedium or large amounts of data users can ask to receive data by means of magnetic media (DAT, Video 8, floppy disk).

scholarly journals Worksite Wellness

2012 ◽  
Vol 10 (1) ◽  
pp. 13-27
Author(s):  
Larry W. Anenson, Jr. ◽  
Ardith Brunt ◽  
Donna Terbizan ◽  
Bryan Christensen
Keyword(s):  
Blood Pressure ◽  
At Risk ◽  
Health Messages ◽  
World Health ◽  
Control Group ◽  
Health Message ◽  
Quasi Experimental ◽  
Mail Address ◽  
To Receive ◽  
E Mail

The purpose of this 38-week, quasi-experimental study was to determine the effectiveness of one weekly e-mail health (e-health) message that utilized the World Health Organization’s seven dimensions of wellness. Employees from a large Midwestern city were recruited and divided into two groups based on their desire to receive additional health information. The participants in each group were then randomly assigned to receive basic or detailed e-health messages. The basic e-health message consisted of an e-mail with health tips for the specific topic; whereas the detailed message included the basic message plus links to games, surveys, and websites to supplement the basic message. Those lacking an e-mail address comprised the control group, and did not receive any e-health messages. A total of 46 employees completed both assessments and comprised the analytic sample. Systolic blood pressure significantly decreased in unmotivated participants receiving the detailed messages (-2.1 mmHg, p=0.04). Across all groups, at-risk participants (blood pressure ? 140/90 mm/Hg or body mass index ? 25 kg/m2) showed greatest improvement with significant drops in both systolic and diastolic blood pressure. Detailed ehealth messages may be an effective approach to assist employees who are at-risk for chronic disease.

SIMULATION OF RADIO SIGNALS FROM 1-10 TeV AIR SHOWERS USING EGSNRC

2006 ◽  
Vol 21 (supp01) ◽  
pp. 65-69 ◽  
Author(s):  
R. Engel ◽  
N. N. Kalmykov ◽  
A. A. Konstantinov
Keyword(s):  
Monte Carlo ◽  
Radio Emission ◽  
Monte Carlo Simulations ◽  
Frequency Spectrum ◽  
Radial Dependence ◽  
Frequency Range ◽  
Air Showers ◽  
Shower Development ◽  
Radio Signals ◽  
The Individual

Cherenkov and geosynchrotron radiation are considered as two fundamental mechanisms of the radio emission generated by extensive air showers (EAS). The code EGSnrc is used for Monte-Carlo simulations of the individual shower development. Calculations of the radial dependence and frequency spectrum of the emitted radiation are performed for the LOPES experiment frequency range.

RADIO FADING AND THE NATURAL ELECTROMAGNETIC BACKGROUND

1965 ◽  
Vol 43 (11) ◽  
pp. 1951-1961 ◽  
Author(s):  
H. J. Duffus ◽  
G. M. Boyd ◽  
J. K. Kinnear
Keyword(s):  
Radio Signal ◽  
Spectral Component ◽  
Broad Band ◽  
Auroral Zone ◽  
Frequency Range ◽  
Single Station ◽  
D Region ◽  
Radio Signals ◽  
Signal Fluctuation ◽  
The Difference

A comparison is made between the natural geomagnetic background in the frequency range 0.006–0.6 Hz and fluctuations of the difference in received signal strength between the two magnetoionic modes of vertically incident broad-band radio signals in the range 6–16 MHz, observed at a single station near Victoria, British Columbia. At this station the following points were observed:1. During the daytime there is often a spectral component common to the radio-signal fluctuations and to the natural geomagnetic background, even during quiet magnetic times. There is seldom phase coherence, however, except for a few minutes at a time.2. There is a small but highly significant (1%) linear correlation R = 0.33 between all the hourly mean amplitudes of the radio-signal fluctuation level and the hourly mean amplitudes of the natural geomagnetic background. The correlation coefficient rises as high as R = 0.71 at 1400–1500 local time, when only a particular hour of each day is considered. It is concluded that geomagnetic micropulsations in this frequency range are a better indicator of r-f. fluctuations than is the local Kp.3. At night, there is a relationship between the occurrence of Pt's and of r-f. fluctuation, although their frequency components are not usually as closely related as are those of the daytime regimes.It is suggested that geomagnetic micropulsations can couple exospheric or auroral zone fluctuations into the upper E or F regions strongly enough to produce observable radio-signal fluctuations at mid-latitudes, even during magnetically quiet times.Lack of correlation between micropulsations and phase fluctuations of 18 kHz signals observed over an E–W 100-km path, and 80 kHz observed over an E–W 3 300-km path suggests that significant coupling does not extend down to the D region during magnetically quiet times.

The Use of Magnetostrictive Cores for the Vibrations Generation and Energy Harvesting from Vibration, in the Selected Frequencies of Work

2014 ◽  
Vol 598 ◽  
pp. 75-80 ◽  
Author(s):  
Jerzy Kaleta ◽  
Krzysztof Kot ◽  
Rafał Mech ◽  
Przemyslaw Wiewiorski
Keyword(s):  
Energy Transfer ◽  
Information Transfer ◽  
Wide Frequency Range ◽  
Frequency Range ◽  
Mechanical Vibrations ◽  
Energy Transportation ◽  
To Receive ◽  
Low Power Electronics ◽  
Time Selection ◽  
Selection Of

The paper presents research on use of magnetostrictive cores for the recovery of energy from vibrations and its use to power low-power electronics. To achieve this goal a test stand was constructed to generate and to receive the vibrations in the measurement system at the same time. Selection of an appropriate magnetomechanical parameters of the system was an important element influencing end results. The most important were values of the prestress and magnetising field for actuators and harvesters. As a result of the investigation the device operating in a wide frequency range (up to 40 KHz) and a system for energy transportation through mechanical vibrations were developed. Moreover it was shown that the proposed solution allow information transfer in a short bursts over the same system as energy transfer.

scholarly journals Implementation of missed call for making a password and controlling devices

2018 ◽  
Vol 7 (4.44) ◽  
pp. 127
Author(s):  
Ferry Wahyu Wibowo ◽  
. .
Keyword(s):  
Base Station ◽  
Telephone Network ◽  
Cellular Phones ◽  
Will Emit ◽  
Phone Number ◽  
Network Provider ◽  
Radio Signals ◽  
To Receive

The cellular phones do not use telephone cables. The cellular phones send radio signals into the air to the nearest transmitter tower called the base station. The transmitter tower will emit the signal to the next station and so on until it reaches the phone that is called. When a new call arrives on the phone number, it will generate a tone until it is picked up, rejected, or the time has been ended to receive this tone (each telephone network provider has different policies related to the time used for this telephone connection so that this causes the number of rings raised to vary). This paper focuses on the missed call services which is one of the features found on the telephone. The tone that has been generated by this calling can emerge ring. This ring can be detected and manipulated to be something useful for controlling devices or making some password.  

Incentives & Freebies as a Moderator for Opt-In E-Mail Acceptability

2012 ◽  
Vol 2 (4) ◽  
pp. 54-67 ◽  
Author(s):  
Rajesh Kumar Sinha ◽  
Subhojit Banerjee
Keyword(s):  
Information Search ◽  
Cost Benefit ◽  
Daily Basis ◽  
Consumer Involvement ◽  
External Information ◽  
Costs And Benefits ◽  
Mobile Handset ◽  
To Receive ◽  
The Relationship ◽  
E Mail

The inexpensive and extremely popular nature of e-mails with a large number of people using it on a daily basis has resulted in indiscriminate exploitation of the medium by spam senders. In order to control the menace of spam mails, governments of many countries have come up with strong preventive laws. This makes opt-in e-mail marketing a focus area as overcoming legal hurdles is necessary in running any e-mail marketing campaign successfully. Marketing e-mails can be seen as an interactive tool to get relevant external information. But consumers weigh costs and benefits arising out of adopting any particular method of information search. Positive perception towards cost-benefit arising out of marketing e-mails can result in permission opts-in from consumers. Extending the idea of cost-benefit perception, the study uses various incentive conditions to find the moderating impact on the relationship between willingness to receive commercial e-mails from mobile handset marketers and consumer involvement conditions for the same. The planned hypotheses were tested by conducting a questionnaire among 105 post-graduate students studying in two colleges. The results indicate limited ability of incentive conditions to function as a moderator between involvement and willingness. The paper contributes towards the advancement of research in this area and provides useful insights for campaign planners as well.

scholarly journals Raspberry PI based advanced communication for disaster management

2018 ◽  
Vol 7 (2.31) ◽  
pp. 74
Author(s):  
Dr Su. Suganthi ◽  
S Aishwarya ◽  
S Keerthana ◽  
B R. Sandhya
Keyword(s):  
Cellular Networks ◽  
Base Stations ◽  
Raspberry Pi ◽  
Frequency Range ◽  
Good Communication ◽  
Fm Radio ◽  
Transceiver Module ◽  
Radio Transceiver ◽  
Rescue And Relief ◽  
To Receive

When a natural disaster occurs one of the major crisis is communication. This is mainly because when a calamity occurs all the cellular networks, towers and other contemporary means of network goes down making it impossible to communicate with others. Thus in this paper we propose an alternative solution for communication during disaster which can be achieved using a Long range radio transceiver module, which can operate without the help of any towers or base stations. The proposed transceiver model is a standalone device which can transmit and receive voice signals which operates on ISM band of frequency range 902 to 928 MHz, providing a hinderance free good communication, and as an additional feature is made to receive FM station signals using FM radio module, to keep us updated with the news, rescue and relief activities. 

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