 | | DEMONSTRATED ABILITIES | |
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- 20 years experience in the design of complex software systems: system level and architecture design.
- Proven abilities as a team leader.
- Strong mathematical background, analytical and problem solving skills.
- Works independently or as a part of a team
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| SOFTWARE EXPERTISE |
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Delphi 7, Java, , PHP, VB, C/C++, SQL, HTML,
Fortran, Basic, Cobol, Pascal PL/1
Windows,
DOS, UNIX
Sybase, InterBase, Access, MySQL, Advantage
Excel , Word, WordPerfect |
| |
Optimal Decisions is a software developing and consulting company
focused on Management Science Technologies (Statistics, Optimization).
It was founded in 1998. The president of the company, Tchavdar
Dangaltchev, has a Ph.D. in Management Science from Belarusian
State University. Tchavdar worked 14 years as a System Analyst and
Programmer at Institute of Mathematics, Sofia, Bulgaria. He has
more than 20 years experience programming in different computer
languages and has taken part in a number of projects involving
statistics and optimization, in some of them as a team leader.
Tchavdar also has a management experience - from 1990 to 1992
he owned a computer programming and consulting company in Bulgaria.
In 1996 he moved to Vancouver and worked as a Research Associate
at UBC.
TCHAVDAR
DANGALTCHEV-WORK EXPERIENCE
- 2005 Instructor (Statistics for MBA) - University of Phoenix, Vancouver, BC.
- 2004 Instructor (Data Warehousing) - Kingston College, Vancouver, BC.
- 2002-2003 Senior Scientific Researcher - PNNL, WA.
- 2002 Instructor (DBMS) - University of Phoenix, Seattle.
- 2000-2002 System Analyst / Programmer, CGS Inc. -Seattle.
- 2000 System Analyst / Programmer - Delphi 5, RFM, Vancouver, BC.
- 1998-2005 System Analyst / Programmer, Optimal Decisions.
- 1997-1998 Programmer in Delphi 3.2, Klein Systems Group Ltd, Vancouver, BC
- 1997 Programmer in VB 4.0, Info-Touch Inc, Vancouver, BC.
- 1996 Research Associate, Bureau for Research on Applications of Management Science and Statistics, Faculty of Commerce and Business Administration, University of British Columbia.
- 1985-1996 Research Associate, Institute of Mathematics (Bulgarian Academy of Sciences) - group for applied mathematics, Sofia.
- 1982-1985 Mathematician, Institute of Mathematics (Bulgarian Academy of Sciences) - group for applied mathematics, Sofia.
MAIN PROJECTS
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| 2002 | Simulation and cost analysis of clean-up operations at Hanford site. |
| 2000 | Reporting tools for Apparel industry IS |
| 1998 | System for minimal risk investment portfolios. |
| 1997 | Container, Cargo, AP IS - Caiman Island Port Authority. |
| 1996 | System design for simulating the inventory control process for low demand items. Estimating the parameters of the process. Calculating the optimal policy. Estimated Savings $500,000- ESCO LTD., Portland, OR, USA. | | 1990 | Design the current best algorithms for Chinese Postman Problem and Set Covering Problem as a part of Interactive System for Optimization - International Institute of Applied System Analysis (IIASA), Vienna, Austria. | | 1989 | System design for optimizing the moment structure of the Electricity system of Bulgaria - Institute of Energetics, Sofia, Bulgaria. | | 1986 | Design and development of Information system including Statistics and Forecast - City Trade Organization of Plovdiv. | | 1985 | System design for optimization of the canning industry of Bulgaria concerning 1990 - Canning Research Institute, Plovdiv, Bulgaria. | | 1982 | Algorithm design for optimization of the guillotine cut - Motorcar plant "Record", Plovdiv, Bulgaria. |
| PUBLICATIONS |
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[1]. Matov V., Dangalchev Ch., Mathematical models in the canning
industry, Mathematics and education in mathematics, Sofia, 1985,
pp. 476-479.
| | [2]. Dangalchev Ch., Modification of the direct support method for
maximal flow problem on graphs, Proc. of VIII Sci. conf. of the Bul.
postgraduates in USSR, Moskow,1986.
| | [3]. Todorov M., Sterev G.,Dangalchev Ch., Algorithms evaluating
the deviations from planar forms in surfaces measuring, Mathematics
and education in mathematics, Sofia, 1988, pp. 364-368.
| | [4]. Dangalchev Ch., Graph interpretation of the functions including
absolute value functions, J. of the Belarussian Univ., Minsk, S.I, N3,
1988, pp. 38-41.
| | [5]. Dangalchev Ch., The direct support method for solving partially-
linear problems obtained when absolute value functions are twice applied,
Mathematics and education in mathematics, Sofia, 1989, pp. 284-289.
| | [6]. Dangalchev Ch., Optimization of statistic systems with respect
to nonsmooth optimal criteria, PhD thesis, Minsk, 1989.
| | [7]. Bojadgiev D., Dangalchev Ch., Finding the centers of inscribe,
outscribe and concentric circles for oval figures, Coll. rep. CISTI,
Sofia, 1990.
| | [8]. Dangalchev Ch., Problems with minimax cost function, Coll.
rep. CISTI, Sofia, 1990.
| | [9]. Dangalchev Ch., The direct support method for solving
partial-linear problems with minimax cost function, Mathematics and
education in mathematics, Sofia, 1990, pp. 340-344.
| | [10]. Dangalchev Ch., Partially-linear problems obtained by absolute
value functions, C.R. Acad. Bulg. Sci., Tome 43, No. 3, Sofia, 1990,
pp. 45-46.
| | [11]. Dangalchev Ch., Transportation problem with fixed supplies,
Mathematics and education in mathematics, Sofia, 1991, pp. 200-203.
| | [12]. Dangalchev Ch., A transportation problem with fixed supplies
and uniform cost function, C.R. Acad. Bulg. Sci., Tome 44, No. 11,
Sofia, 1991, pp. 21-24.
| | [13]. Dangalchev Ch., Quadratic transportation problem with
fixed supplies, Mathematics and education in mathematics, Sofia,
1992, pp. 41-44.
| | [14]. Dangalchev Ch., Partially-linear problems obtained by getting
maximum of functions, C.R. Acad. Bul. Sci., Tome 45, No. 8, Sofia, 1992
pp. 21-22.
| | [15]. Dangalchev Ch., Algorithm for solving partially-linear
optimization problems obtained by getting maximum of functions,
Optimization, Vol. 32, Berlin, 1995, pp. 45-57.
| | [16]. Dangalchev Ch., Optimal tracking problem, C.R. Acad. Bul. Sci.,
Tome 48, No. 7, Sofia, 1995, pp. 25-28.
| | [17]. Dangalchev Ch., Graph algorithm for partially-linear problems
obtained by absolute value functions, Optimization, Vol. 35, Berlin,
1995, pp. 275-288.
| | [18]. Dangalchev Ch., Partially-linear transportation problems,
European Journal of Operational Research, Vol. 91, No.3, 1996, pp. 623-633.
| | [19]. Dangalchev Ch., Partially-linear transportation problems, obtained
by means of absolute value functions, International Transactions in
Operational Research, Vol. 4, No.4, 1997, pp. 259-271.
| | [20]. Dangalchev Ch., Optimization of the transporation expense of a firm
with contrcatual supplies, Transportation Research (B), Vol. 34,
2000, pp. 203-217.
| | [21]. Dangalchev Ch., Generation models for scale-free networks,
Physica A, Vol. 338, 2004, pp. 659-671.
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