Hello, our hydraulic programm product works more then 7 years for optimization for everyday work regimes of Transsibneft oil piplenes ( Russia, Siberian lands).

Note, there are more 500 real physical regimes for month

So, maybe it's one of the complex hydrosystem for oil transfer in the world.

Also we applied product for heat transfer systems and for example it's worked more then 4 years for Academgorodok of Novosibirsk and for Omsk, city with more then 1000 000 peoples.

I'll be very glad find colleagues wich worked under similar problems.There are profitable problems.

R.T.Faizullin

PhD in math PhD in mech PhD in CS

Head of Chair of Computer Security

Omsk State University, Russia

I looked up your web page/papers on the Omsk Univ. website and interested in finding out a bit more. Please email me at alex_k80@hotmail.com

just, out of curiosity:

what is challenges of your problem?

to my knowledge optimization of network flow is nothing else a linear programming problem which is fairly documented in optimization literature and nothing seems to be state-of-the-art and matter of research, am i miss smething?

For example one of the problems - there are some pump stations, near 20 on pipeline then on every station there are 4 pump. Also note, there are near 20 kinds of pupms

You should find some pumps on some stations and some connections for pumps on station (parallel or not) for optimal (by energy cost) realization for given rate flow regime with flows on two side

So it's problem of programming but of integer programming not linear.

>I looked up your web page/papers on the Omsk Univ. website It's very old stuff

I' ve just sent you letter

(i am only curious and would like to learn)

ok, u r right, it is an integer programming,

but, is this integer programming is challenge from mathematical poit, i.e. available methods are not robust or efficient?

or on the other side consistenc and suitable formulation of network flow problem is matter of research, and optimization module could be considered as a black-box?

thanks

>but, is this integer programming is challenge from mathematical poit, i.e. available methods are not robust or efficient?

There are some methods but we work with real system wich 3000 kilometers length. So method must be effective and fast but not fastidious.

>or on the other side consistenc and suitable formulation of network flow problem is matter of research, and optimization module could be considered as a black-box?

Maybe for same problem it's black- box approach but there are other problems for example with rate changing where we should find safety regulator regimes without possible shocks in hydrosystem.

Note it's very complex hydraulic systems and formal approaches did'nt give to us way for success

thanx for interes

thanks for your comments,

could you please forward to me one of your paper in this field? (john.dongarra@gmail.com)

what about climate in russia? (i hear from hevy snow)

>could you please forward to me one of your paper in this field? (john.dongarra@gmail.com)

I've just sent

>what about climate in russia? (i hear from hevy snow)

It's not only Russia it's Siberia -30 C in outer space now

Thanks, i got them.

It seems that it is a general attitude for Russian scientists to publish their work in their native language (i saw several works, papers, books by Russian scientists that after a long time are translated to English)

But why? Is it due to this fact that they do not like to share their result to others? Or it is (explicitly or implicitly) enforced by government? Or due to weak English?

But why? You can to google me as R.T. Faizullin or R.T. Faizulin there are some articles on the English and translated on English articles

By the way may first works was related with problems of unsteady transonic flows in cascades of turbomachines and of course...it was'nt pure algebra in the USSR

Serously our heat -oil-electro works at first was directed for russian bussines and for modelling of our native complex systems and only now when we have real results we can present our products for other countries.

my crticism is not related to your work, it is general, particulrly in the field applied mathematic (optimal control) which i am interested in (Russian scientist are really strong in this field).

are you mean that my view is not correct, and considering distribution of science, russian scientists are as good as others?

>my crticism is not related to your work, it is general, particulrly in the field applied mathematic (optimal control) which i am interested in (Russian scientist are really strong in this field).

Yes, it seems as post cold war phenomenon. When you works for aircraft every your step toward West seems as...

But note in the some russian reffered journals are royalties for authors, near 200 dollars for one technical article. For example one my friend work on theorphys area and he have near 1000 per year and PLUS grants. And as contradiction I know so for publication for one article in biophys or bioneuro there are fees near 10 000 - 20 000 dollars from author, note from his grants. It seems as rats speedway there are needs for money for articles publications and there are needs for articles for grants...