SPRING MECHANICAL PERFORMANCES
VERIFICATION AND TECHNOLOGY CARD PREPARING PROGRAM SYSTEM
B.Slavov
WIRES MOVEMENT CONTROL
PROGRAM SYSTEM FOR MATERIAL STOREHOUSE
B.Slavov
CONTINUOS DEPENDENCE
OF THE SOLUTIONS OF IMPULSIVE DINAMICAL SYSTEMS FROM THE INITIAL CONDITIONS
H.Dimov, S.Nenov, S.Petkova
SOME REMARKS ON A THEOREM OF G.POLYA AND
BRAUER FOR IRREDUCIBILITY OF POLYNOMIALS
S.Petkova, H.Dimov
SPRING MECHANICAL PERFORMANCES
VERIFICATION AND TECHNOLOGY CARD PREPARING PROGRAM SYSTEM
B. Slavov
University
of Chemical Technology and Metallurgy,
8 Kl. Ohridski, 1756 Sofia, Bulgaria
E-mail bslavov@uctm.edu |
Received
27 January 2001 Accepted 06 March 2001 |
ABSTRACT
The manufacture process of spring products is a closed circle. It involves
the next base stages:
- determination of the construction-technology requirements of the customer
- verification of the mechanical performances
- verification of the storehouse presence of the base materials for production
- creation of technology card for manufacture
- make archives of requests
- make archives of executed orders
- manufacture of the product-spring
- calculate the final price for customer
The relationship between separated stages in the manufacture of the product-spring
determinates the time of execution of the customer's request. For acceleration
of the manufacture process is created program system called "SPRINGS".
It is suitable for small and middle firms with large scale of spring products
with typical reiterations of the customer's orders.
Keywords: program system, spring, technology card, model
WIRES MOVEMENT CONTROL
PROGRAM SYSTEM FOR MATERIAL STOREHOUSE
B. Slavov
|
University
of Chemical Technology and Metallurgy,
8
Kl. Ohridski, 1756 Sofia, Bulgaria
E-mail bslavov@uctm.edu
|
|
ABSTRACT
The normal execution of a certain production process depends by the presence
in the storehouse of the corresponding base materials. The storehouse
information system is indispensability for any kind of firm without sense
of it business activity and scale. The function requirements to the system
are:
- to embrace the completely scale of assortments of materials diviided
by classes, groups and subgroups
- to report incomes and expenses of the materials and their balances
- to perform present verifications about storehouse presense of materials
- to / screen, file, printer/
- to make archives of material database
- to verify in archives about storehouse presense of materials for past
period
For control of the movement of the wires into material storehouse is created
a program system called "TSKLAD75".
Keywords: program system, wires, database, verifications, reports
CONTINUOS DEPENDENCE
OF THE SOLUTIONS OF IMPULSIVE DINAMICAL SYSTEMS FROM THE INITIAL CONDITIONS
H.Dimov, S.Nenov, S.Petkova
|
University
of Chemical Technology and Metallurgy,
8
Kl. Ohridski, 1756 Sofia, Bulgaria
e-mail: petkova@uctm.edu
|
|
ABSTRACT
The paper deals with impulsive autonomous systems. Some results for continuous
dependence from the initial conditions of the solution of an impulsive system
are obtained
Keywords: impulsive system, continuous dependence
SOME REMARKS
ON A THEOREM OF G.POLYA AND BRAUER FOR IRREDUCIBILITY OF POLYNOMIALS
S.Petkova, H.Dimov
|
University
of Chemical Technology and Metallurgy,
8
Kl. Ohridski, 1756 Sofia, Bulgaria
e-mail: petkova@uctm.edu
|
|
ABSTRACT
Necessary conditions for reducibility of such polynomials of even
degree are found. The following results connected with a theorem of
G.Polya and A.Brauer are found.
The polynomials F(x) are irreducible if provided s(p+ I) < n/2.
The polynomials F(x) are irreducible if provided thev have at least
a pair of conjugate complex zeros.
Keywords: irreducible polynomials
