ARMENIEN TELECOMMUNICATIONAL
CENTER "SEARCH"
A discrepansy between actual and desirable outputs is
usually measured while social-economic processes (large scale
systems) are controlled (according to feedback prinsiple). This
discrepansy is than fed to system input to return the system into
required balance condition. The following stages are typicall for
it: criterion (standard) selection; system operation quality
(measuring methods selection); actual and standard operation
quality comparision to define a discrepansy. The control signals
are defined on the basis of discrepansy size for returning a
system to standard behavior. Managerial staff and leaders solve
to interrelated problems as usual. These are time delay and
sensitivity.As a result of time delay an error occurs inevitably
in the system.The error is added to imput influence.This time
delay may be reduced by increasing the sensitivity, i.e
controlled (correcting) influences take place, when there are
small standard deviations.However, the sensitivity increase may
induce the leaders to take urgent and unreasonnable decisions
during occasionnal fluctuations occured in the systems. In
practice, the fluctuations near the standard and the standard
fluctuations as well take place while system developing. And
therefore, in order not to solve unessential problems all the
time the leaders usually increase the time delay reducing the
sensitivity.
If a system condition is evaluated with an error then the
system may become unstable (the error will increase in time).
The time delay is minimized by introducing correcting
actions before measuring the actual system condition. One of the
possible ways to solve the problem is the input influence
control.
If the input/output signal correlations (functional
connections) are known, i.e the model of the system, than one may
predict precisely enough the output reaction on controlled
influence. The considering control principle is called control
according the indignation. The principle is rather simple, but it
is difficult to realize it without modern means of informatics,
telecommunication and paperiess managerial technology (digital
pacet, radio computer comunication).
The experience of restoring works control on elimination of
catastrophic erthquake consequences in Armenia has demonstrated
it clearly enough. The natural calamity affected almost the whole
northern part of Armenia, 21 towns and districts (about 40% of
republic territory) with a population of more than 960 thousand
people. Leninakan, the second town of republic turned into a heap
of ruins, Spitak was fully wiped out. Significant distructions
occured in Kirovakan and Stepanavan and in Spitak, Stepanavan,
Ahurian, Gougassian, Aragadz regions as well.
Thousands of people, including children, perished. 514
thousand became homeless, 365 villages suffered losses, 58 of
then were fully distroyed. The great damage was caused to
national economy. The Republic lost about 17% of its dwelling
fund (about 8 millions sq. m.). About half of schools and pre-
school institutions, 110 hospitals and ambulances, 119 clubs and
cultural objects are either distroyed or in emergency conditions.
157 enterprises stopped there operation 17 from 20 major
enterprises in Leninakan were fully destroyed.
The great losses are in agriculture. The agricultural
constructions were fully or partially distroyed about 80 thousand
head of cattle was lost. Irrigation and water supply systems as
well as other agroindustrial objects were destroyed on the area
of more than 90000 hectares. The Kirovakan Heat and Power Plant,
the northern and western electric systems, a lot of
transformating and distrbuting substances were put out of
operation. Partil damage was caused to the Hrazdan Hydro-electric
power station. All the communication lines were damaged in the
earthquake region. It took almost two months to put them in
action. The water supply systems of Leninakan and Kirovakan got
essential destruction and the one in Spitak was completely
distroyed. In fact, in above mentioned towns and in 18
country-sides the whole industrial and social structures were
paralyzed.
According to preliminary calculations, Armenia has lost
about 13,5 milliard roubles of its national wealth. The Armenian
tragedy and the events followed have confirmed the real necessity
of aerialcosmic photography methods, satelite telecommunication
system and computer radio-packet communication to provide an
information acquisition, business meetings, consultations,
complex situation analysis and coordination of all kinds of
works.
The absence of such special means for effective
communication caused significiant difficulties in restoring works
control. No sq.m. of dwelling area was put into commission in
Leninakan and in Stepanavan, Shamshadin and Toumanian regions
during the first half of 1989. The local authorities and leaders
didn't manage to solve the problem of people employment. That's
why the level of unemployed population in the earthquake zone has
reached 42 thousand people. The half-year plan of capital
construction investments volume is realized on 32-35% of year
limit only. Because of the poor organized work of some
ministeries only 62 of 250 needed compound industrial modules
were obtained. That makes the restoring efforts in the region to
slow down. And it should be noted that all restoring works were
coordinated by Special Commission of the CPSU political Bureau,
with the leaders of the State at the head.
Thus, it is obvious that computer radio-packet communication
network design is an extremely actual problem not only for
republic and state but for the world as well. Proposed
telecommunication radio packet network is based on early
developed systems, using space, satellite, telephone and radio
means, such as Notepad-USA, SFMT, JARN, and Adonis (the USSR).
Telecommunication Network (TN) is the basis for the
integrated computer control system for restoring process and
socialeconomic rehabilitation of population in Armenia. TN is
intended to provide information effective input, processing,
analysis, storage and transfer for solving coordination, checking
and relization problems.
The central computer TN mode is installed in Yerevan to accumulate all the information for complex processing and coordination. The local distributed computer networks will be placed in Leninakan, Kirovakan, Spitak and Stepanavan.
Pic. 1
The following activities will be realized via local terminals and personnal computers:
Pic. 2
On March 1, 1990 in computer banks of the Telecommunication
Center "Search" were accumulated data for more than 2OO thousand
sufferers, 18 thousand hospitalazed people, dozen of victims, 25
thousand being searched after the quake; and 25 thousand Armenian
refugees from Azerbaijan after the pogroms and murders in Baku in
January 1990.
Due to rationally organized information works about 20
thousand persons ( children and adults, friends and relatives)
have found each other.
On the basis of Center data there have bean published
"Nadezda" reports with the lists and photos of searched persons.
So it was for the first time in the USSR that Center
"Search" carried out inquiry and search functions oriented on
people`s needs not only inside the republic, but in foreign and
inner Armenian diasporas as well.
The individual TN consists of portable computer to node
computer (either directly or via telephone modems) or to another
personal computer via radio modem (packet communication
controller), or reciever-transmitter and of antennae. Any type of
computer may be used. The only requirement is the availability of
sequential data exchange channel, operating according RS-232
standard.
A command, a textual file, computer software, synthesized
speech and a graphic image as well may serve as a transmitted
information. The exchange rate increases from 50 to 9600 b/s.
The use of low- and mid- orbital satelites essentially
simplifies and reduced the cost of the earth stations equipment.
The advantages of proposed TN structure, as compared with
traditional ones, are the following: