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Generalized net model of the accelerating backpropagation algorithm
S. Sotirov 장전수학회 2006 Proceedings of the Jangjeon mathematical society Vol.9 No.2
In this article is introduced accelerated method modeling for neural network education by Back-Propagation algorithm, changing the description of the standard algorithm with aim accelerated education of the neural network. Generalized net models of accelerating backpropagation algorithm are constructed.
S. Sotirov 장전수학회 2007 Advanced Studies in Contemporary Mathematics Vol.15 No.1
In this paper we introduce GN-model with intuitionistic fuzzy estimations of transmit routines of the Bluetooth comunication in part data trafic.
Optimization of a neural network of self-organizing maps type with time-limits by a generalized net
K. Atanassov,S. Sotirov 장전수학회 2006 Advanced Studies in Contemporary Mathematics Vol.13 No.2
The neural networks Self-Organizing Maps have got a multitude of applications. The introduced generalized net gives a possibility for optimization of the neural network allowing determination of its optimum architecture based on time limits for its learning.
Representation of the neural networks by the game method for modelling
K. Atanassov,S. Sotirov 장전수학회 2012 Advanced Studies in Contemporary Mathematics Vol.22 No.3
It is shown that the game method for modelling can be used for a representation of the neural networks.
Evdokia N. Sotirova,Sotir Sotirov,Alexandar Dimitrov,Krassimir T. Atanassov 장전수학회 2013 Proceedings of the Jangjeon mathematical society Vol.16 No.2
Using the approach of the game method for modelling, a model of oil transformationin marine environment is constructed. It is an illustration of thepossible applications of the method.
Generalized net model for parallel optimization of feed-forward neural network
K. T. Atanassov,S. Sotirov,A. Antonov 장전수학회 2007 Advanced Studies in Contemporary Mathematics Vol.15 No.1
The used generalized net wil give us a possibility for parallel optimization of fed-forward neural network based on assigned training pairs and time limits.
Hepatic venous outflow obstruction after whole liver transplantation of large-for-size graft
Chetana Lim,Michael Osseis,Antonella Tudisco,Eylon Lahat,Dobromir Sotirov,Chady Salloum,Daniel Azoulay 한국간담췌외과학회 2018 Annals of hepato-biliary-pancreatic surgery Vol.22 No.4
Backgrounds/Aims: Preservation of the native inferior vena cava using a large graft during adult whole liver transplantation is associated with a potential risk of hepatic venous outflow compression/obstruction, which may adversely affect both graft and short-term patient outcomes. Intraoperative placement of materials to restore adequate hepatic venous outflow can overcome this complication. Methods: Data of patients who underwent liver transplantation between 2011 and 2016 were retrospectively reviewed. All cases of hepatic venous outflow obstruction due to large graft size managed via intraoperative intervention were analyzed. The literature was searched for studies reporting adult cases of hepatic venous outflow obstruction following whole liver transplantation managed extrahepatically. Results: Three patients diagnosed with intraoperative hepatic venous outflow obstruction due to large graft size were managed via retro-hepatic placement of breast implants (2 cases) or abdominal pads (1 case). It was successfully carried out in all cases. Four studies including 15 patients were identified in the literature search. Different types of materials such as inflatable materials (Foley catheter, Blakemore balloon), surgical gloves or breast implants, were used. Conclusions: Placement of inflatable materials leads to gradual deflation in the postoperative period, which might obviate the need for reoperation. Breast implants could be left in place indefinitely due to their bio-inert nature.
TOWARDS A MODEL OF THE DIGITAL UNIVERSITY : A GENERALIZED NET MODEL FOR PRODUCING COURSE TIMETABLES
A. Shannon,D. Orozova,E. Sotirova,K. Atanassov,M. Krawczak,P. Melo-Pinto,R. Nikolov,S. Sotirov,T. Kim(김태균) 한국지능시스템학회 2008 한국지능시스템학회 학술발표 논문집 Vol.18 No.1
In a series of research papers, the authors have studied some of the most important models of a contemporary universities, such as: the research university, the entrepreneurial university and the digital university and construct their Generalized Net (GN) models. This paper is based on the case-studies of Sofia University, the Technical University of Munich and the University of Edinburgh. The main focus is to put the analysis of the processes of the functioning of a university which effectively integrates Information and Communication Technologies (ICT) in all university activities. A concrete example based on the process of course administration at University of Edinburgh is considered. This university is in a process of developing an integrated information system covering most of the university activities. The opportunity of using GNs as a tool for modeling such processes is analyzed as well.