Ph D Quality Control

C U R R I C U L U M V I T A E

BOYAN NEDIALKOV DIMITROV, Ph.D., Dr. of Math. Sci., Professor of Statistics

SPECIALIZATION - Mathematics, Mathematics Education, Mathematical

Modeling, more specific, in the areas of

Statistics, Probability, and their Applications

in Operations Research (Reliability, Queuing, Quality, Environmental

Modeling, Ageing, Statistical Data Analysis).

PERSONAL INFORMATION

Addresses: Office: Home:

Dept. of Sci. & Math. 6366 Rustic Ridge

Kettering University Grand Blanc, MICHIGAN 48439

1700 West Third Ave. U.S.A.

Flint, MI 48504-4898,

Telephone 810-***-**** 810-***-**** (home)

E-mail: ********@*********.***

Sex: Male

Citizenship: Bulgarian, US

Family Status: Married, with 5 children

Residency Status in the USA: Green Card 1995-2001, US Citizen, Feb. 05, 2001.

Languages: English, Russian, German, Bulgarian.

DEGREE INFORMATION

Dr. of Mathematical Sciences, Probability and Statistics, - Faculty of

Mathematics and Computer Science, Sofia University, Sofia, Bulgaria.

Dissertation: "Mathematical Methods for investigations of

queuing systems", May 1986, (in Bulgarian).

Ph. D. Physics & Mathematics, Probability and Statistics, Mechmath

of the Moscow State Univ. Michael Lomonosov.

Dissertation: "Some applications of the random sums method"

(in Russian), June 1971, Supervisor: Prof. B. V. Gnedenko.

M.A. Mathematical Education with specialization in Probability

and Statistics, Faculty of Mathematics and Computer

Science, Sofia University, Sofia, Bulgaria. July, 1966.

Thesis: "Limit theorems for infinitesimal renewal processes"

(in Bulgarian).

PRESENT POSITION

Full Professor of Mathematics (Probability and Statistics) since July, 2001,

at Kettering University,

EMPLOYMENT RECORD

July 1995 - June 2001: Associate Professor of Mathematics (Probability and Statistics),

GMI Engineering and Management Inst. (now Kettering

October 1993 - June 1995: Adjunct Professor of Mathematics (Probability and Statistics),

GMI Engineering and Management Inst.

January - June 1993: Visiting Professor at Concordia

University, Montreal, Canada, Dept. of Mathematics and

Statistics.

September - December 1992: Visiting Professor at McGill University,

Dept. of Mathematics and Statistics, Montreal,

Canada and Researcher at Concordia University.

January - August 1992: Visiting Professor at Concordia University,

Montreal, Canada, Dept. of Mathematics and Statistics.

January 1989 - December 1991: Professor of Probability and

Statistics, Faculty of Mathematics and Informatics,

University of Sofia, Bulgaria;

September - December 1988: Visiting professor at Concordia

University, Montreal, Canada, Dept. of Mathematics and

Statistics.

December 1976 - August 1988: Associate professor, Faculty of

Mathematics and Informatics, University of Sofia, Sofia,

Bulgaria;

August 1971 - December 1976: Researcher/Lecturer in Mathematics;

Center of Mathematics and Mechanics, Sofia, Bulgaria;

October 1968 - July 1971: post-graduate (PhD) student,

Moscow State University, Moscow, Russia;

September 1966 - October 1968: Researcher/Lecturer in Mathematics;

Center of Mathematics and Mechanics, Sofia, Bulgaria.

TEACHING: COURSES TAUGHT OR DEVELOPED

Undergraduate Classes

- Analytic Geometry

- Calculus I, II and III

- Linear Algebra

- Vectors and Matrices

- Multivariate Calculus

- Elementary Statistics

- Mathematical Modeling

- Engineering Mathematics I and II

- Introduction to Real Analysis

- Differential Equations

- Introduction to Probability

- Introduction to Stochastic Processes

- Introduction to Mathematical Statistics

- Linear Algebra and Linear Programming

Graduate Classes

- Mathematical Statistics and Statistical Inference

- Statistical Methods in Quality Control

- Multivariate Statistical Analysis

- Industrial and Business Statistics

- Statistical Models for Non-numerical Data

- Advanced Statistics

- Mathematical Models and Simulation

- Concepts of Advanced Probability

- Stochastic Models of Operations Research

- Reliability Systems

- Mathematical Methods in Queuing Theory. Queuing Models

- Inventory Systems

- Selected Topics of the Stochastic Processes

- Selected Topics of the Applied Probability

- Mathematical Statistics with Applications

- Operational Calculus (Laplace Transforms, Fourier Analysis, etc.)

RECENT AND CURRENT RESEARCH

RESEARCH DIRECTED AND/OR PARTICIPATED IN

In the area of Probability Theory I have published works on:

A. Limit Theorems (Mostly related with my PhD Thesis):

- Application of Transfer theorems for random sums of random

variables in solving some limit problems of Renewal theory (uniform renewal limit theorems [11,12,17,105], in the study of transient behavior in Branching processes (with large number of ancestors) and special type of service systems (with fast service [6,10,13,18,22,23]). These works study conditions of the Gnedenko-Fahim theorem, or leading-term asymptotic expansion in the domain of attraction of the steady state of a process, to assess when to replace non-stationary characteristics by stationary ones, and how close the two are.

B. Probability Distributions (an old interest, and continuing research)

- Characterization of Probability Distributions and Stability

of Characterization problems, namely Exponential [45,49,60,71,75,79,93, 97,100], Poisson [89,90,105,109], the logistic distribution [105, and 111], and the introduction of the Almost lack of memory class of probability distributions [80,81,84,86,88,91,92,93,98,99,101,103,105,107,109,113,116], which has a broad impact on applications in environmental modeling, insurance business, financial mathematics and other fields.

C. Stochastic Processes of Special Type and Its Applications.

- Markov Chains and its applications in Probability Modeling. Here belongs the most of the power of Probability Modeling for Reliability, Queuing, Inventory problems, the new Markov Arrival Processes (invented recently by M. Neuts), and more. My book [3] is devoted to this techniques, and other books [1,2,6,11] are illustrating it. The Methods of Complementary event and complementary variable in combination, proposed and used in most of my works on priority queues are broadly based on the ideas of searching an underlying Markov process.

- Studies on Priority queues and Service with unreliable servers

Here belongs the monograph [1] on priority queues issued in 1973, Moscow University, in collaboration withcoauthors B.Gnedenko, E.Danielyan, G.Klimov, and V.Matveev. Also the monograph [2], issued in Sofia, 1973with A.Obretenov and E.Danielyan; the Handbook on Queues [4], 1978, which was translated into Polish in Poland [8], 1989. They reflect an extensive work on Priority Queues I did in my papers [2,5,6,8,9,10,13,14,15,16,18,21,22, 23,24,25,26,27,30,31,32,33,35,38], and more. As a main contribution here I consider the worked out Method of Complementary Events, which allows an interpretation of probability generating functions (the Laplace transform and the conventional generating function for discrete distributions), in combination with the Method of the Complementary Variables, broadly exploited in the cited monographs, and in most of the papers.

- Other Queuing Problems developed to study so called Closed Queuing Systems with Priorities (papers [10,14,26,27,30,]), Asymptotic Methods in Queues [22,23,35], Methods of Discretization [38,39,52,54,57,64], and various approaches to the Numerical Solutions for non-stationary process characteristics [34,36,38,39,48,54,56,64,65,68,74,101,103,111];

- Applications of Queuing Theory for Modeling Computational Systems and their Optimization in a non-reliable environment - were worked out mostly under contracts with Engineers of Bulgarian computer industry, 1976 - 1990, and used later as a source of other research projects. Here is my Doctorate on Mathematical Methods in Queuing Theory, acknowledged in 1986, most of the publications in the previous topics, and also in [34,36,40,41,42,48,51,63,66,70,78,82,101,104,111,117].

- Inventory systems - training, lecturing and supervising graduated projects for students in economics at Economical University of Sofia. Publications [10,21,44,47,59,67,72,85,96,112], and the textbook [6] are results of my work in this area. - Reliability studies - theoretical and practical works related toredundancy systems [2,3,4,6,7,11,19,117], statistical criterions for testing hypotheses in view of the specific information from reliability data [28,29,37,50,53,59,83,96]; optimization problems when work with non-reliable servers and other items were mentioned in the Applications of the Queuing Theory above. The new stuff essentially is concentrated on the introduction of models with check-points that may save execution time, the use of methods of discretization, the selection of specific statistical methods for standardized use, and the new point of view on reliability systems with random redundancy introduced in [91,117], important for communication systems and computer networks. The development of standardization documentation for practicing reliability and specialized computer packages for purposes of the Applied Statistics was actively made in years, and reflected in the papers [53,58,59,62,72,76,83,112]. In addition, most of my works in Statistics are related with the respective practical reliability problems [28,29,37,50,53,58,83].

D. Warranty Analysis.

- Probability Models in Warranty Analysis (with Dr. S.Chukova), is an approach to incorporate the qualitative and quantitative marketing, technical and economical product characteristics in an integrated model and objective function to determine the optimal behavioral parameters of the corresponding models and processes in real world systems. It has been started by Grant 43 - 87 of Bulgarian Science Foundation, and still continues. The works in the field of reliability, noticed above, and the specific works in this field [77,89,90,94,108,110, plus the Dr. Chukova's works] brought us to the collaboration with world known experts like V. Rykov [94], W.Blischke and D.N.P.Murthy (BOOKS # 10, and [108]). Recently an unexpected relationship between warranty modeling and studies on probability distributions in periodic random environment is noticed [90,114,116], and promise good field of application for our class of Almost-Lack-of-Memory probability distributions. In this way, the processes used in warranties, and environmental and financial processes in the insurance mathematics will

be linked, and many problems may mutually gain from the solution for the others. The work continues in collaboration with colleagues and graduate students from Concordia University, Montreal on projects for Cost Analysis in Related Models.

E. Environmental Studies.

My interests on Environmental Probability and Statistical

Models and methods of their study were initiated. Modeling for

periodic random data related to water pollution and statistics

for parameters of Probability Distributions with Almost lack of memory property for Studying Environmental Properties, had proved fruitful in most of the work of myself and involved other colleagues. Here belong the most resent papers [88,90,92,98,103,105,107,109,114,115,116,117].

Statistical Studies.

Related to Standardization, Applied Statistics, Reliability and Quality

- The work on Standards in Applied Statistics, Statistical Methods in Reliability and Quality Controlbrought to me a lot of practical experience (1975-1991). Being head of the Laboratory on Statistical Quality Control we developed International (for the former "East Countries"), and National (for Bulgaria) Standardsas follows: Standards on Applied Statistics (e.g. Probability Distributions for Applied Statistics, Regression Analysis, Methods of comparing statistical samples), Standards on Reliability (e.g. Estimations of reliability characteristics, Terminology and Symbols, Design of experiments and testing, Tolerances and admissibility), Standards on Statistical Quality Control (SQC) (e.g. terminology and symbols, Statistical estimations of quality parameters of the outgoing production, Methods of statistical sampling from bulk products, Methods of statistical on-line control) and other documents related to the standardization. I wrote methodic (documentation) for practical implementation of the standardized mathematical methods,algorithmic and computational supervision for these methods. Computer programs for SQC, Reliability and Applied Statistics have been created in support of these practically directed works. My Ph.D. studentDimitar Christozov got his degree for the successfully developed program package RELIA-SOFT, where reliability characteristics are estimated from experimentally collected data, and/or field data for item performance. Also Grant #43 (1987-1991) with Bulgarian Science Foundation was awarded in relation to this subject, and involved more researchers in this work. Many of my publications in this field were related with the needs of specific standardization requirements, and with the statistical establishment when these requirements are met. These are the publications from the list [28,29,37,50,53,55,58,83 - for reliability], and [43,50,53,58,59,61,62,69,72,76,83,112 - for quality]. Among the papers related to reliability I would like to mention [50] and [55] where the statistical estimators proposed have the shape of the theoretical intensity function, as stated in the original problem.

- Studies on Statistical Optimization Problems under Incomplete Information [67,87,109]. This topic appeals to a resurrection of the known Markov-Tchebyshev moment problem in the construction of probability measures, and is one of the prospectives for research in the nearest future. Moreover, it has a clear connection with the construction of an Integral Indexes for the Quality of Products (started in [63] with M.Varbanova, I.Stefanov and L.Boneva and continuing be developed in [112]), Contract with INFORMA and the Laboratory of Statistical Quality Control initiated this work, but it is also a good field for further studies. The recent Wuerzburg Workshop (March '99) has shown the actuality and importance of this direction.

IMPACT OF THE RESEARCH ON CURRICULA AND/OR STUDENTS

Research related to my teaching.

University Textbooks combine teaching and research experience.

- After years of teaching and practicing Statistics I wrote the book Mathematical Statistics, 1982 (see BOOKS # 5) and the statistical part of the textbook Probability and Statistics for students of natural science at Bulgarian universities (see BOOKS, # 9, and # 12). Another textbook Statistics for non-mathematical students with an emphasize on statistical models and manipulations for non-numerical data is issued at Southwestern Bulgarian University in Blagoevgrad in 1993 (see BOOKS # 10). Also my teaching courses on Markov Processes at the University of Sofia for students in mathematics lead me to the book # 3, and the courses on Inventory Models and Quality Control for graduate students and post-graduate students at the University of Economics and World Economy in Sofia lead me to the writing of the books # 6 and # 7.

Warranty models for technical items are field of my new interests too. The PhD thesis work of my former student, now colleague and wife, Dr. S. Chukova, the years of collaboration with her gave the result [Books # 11], which is useful for thesis work of graduate students in Engineering, and for select topic course too.

- Work on the Curriculum for university students is a collective work.

- While heading the Department of Probability and Statistics at the Faculty of Mathematics and Informatics at Sofia University (and 2 years as Dean of the Faculty) Computational Stochastics was added to the curricula for students and specialization at the Department was introduced. And it was result of the collective work of all members of the Department. Also curricula for other specializations in mathematics have been work out (Informatica, new specializations in Mechanics, Post-university education for high-school teachers), and this was result of the work of all departments and the work of the Faculty Senate.

High-school Textbooks reflect some teaching experience and personal feeling of the need.

- Through my textbooks for high school students (listed under # 13-17), basic statistical aspects were introduced to high school students for the first time in Bulgaria.

Teaching and consulting Statistics, Modeling, or SQC at the University.

- During my first visits at Concordia University I taught Industrial Statistics and Quality Control, and worked under Contracts with the Center for Building Engineering, where I worked out methods for Statistical simulation of dependent random components in cost analysis problems (ref. to Dr. Z. Khalil, and Dr. Osama Moselhi, Tel. 514-***-****). Also a model for Statistical factor analysis of real data was explored. Add here my teaching experience with students of the specialization Probability and Statistics, the teaching of Quality Control, Reliability and Operations Research for students at the Division for Post-UniversityyEducation and Training of the Economical University of Sofia, my long term tenure as a head of the Laboratory on Statistical Quality Control, the work experience with International Standardization Organization, etc., and you'll understand what brought me to the idea to open The Statistics Clinic at Kettering University for free statistical consulting. It was open in the Fall of 1998 at the Science and Mathematics Department of Kettering University.

Here I work with computers and use almost any available statistical package in my Statistics Clinic, to serve as a consulting office for students, faculty and staff at Kettering University. It really gathers my experience in teaching, theoretical and practical work in years, and also offers (sometimes) new challenging problems to think on. Here also some software I developed for myself in collaboration with Dr. D. Christozov and other colleagues from Bulgaria is available to be demonstrated.

Ph.D. THESES ADVISED

- Priority queues with finite sources and priorities (Dr. Khristo Karapenev). Optimal control of the service in systems with unreliable server (Dr. Krasimir Barosov). Numerical approaches in the study of queuing systems with priority, based on time and phase Discretization (Dr. Chavdar Dokev). Minimization of the total processing time in non-reliable process with implicit or explicit breakdowns and repeat actions (Dr. Nikolai Kolev). RELIA - SOFT program system for computing the statistical reliability of operating products (Dr. Dimitar Christozov). Optimization of the inventory characteristics under incomplete information (Dr. Tran Zoan Fu). Optimal control of Winner processes with external actions (Dr. Mariana Beleva). Methods of discretization in the study of queuing systems with unreliable server and priorities (Dr. Petko Ruskov). Probability models in Warranty Analysis (Dr. Stefanka Chukova). Informative parameters in quality studies (Plamen Petrov), others.

Ph.D. students:

1. Khristo Karapenev (Dr. since 1976);

2. Chavdar Dokev (Dr. since 1980);

3. Dimitar Christozov (Dr. since 1987);

4. Stefanka Chukova (dr. since 1988)

5. Tran Zoan Fu (Dr. since 1988);

6. Petko Ruskov (Dr. since 1990);

7. Krasimir Barosov (Dr. since 1991);

9. Mariana Beleva (Dr. since 1992);

9. Nikolai Kolev (Dr. since 1994);

10 Velika Dragieva (Dr. since 2010).

Master students: At Concordia - Laila De Normand and Faiz Ahmad, and many more back to Bulgaria to make a total of 26.

5-th year Faculty thesis advisor for students graduating Kettering University

Kettering students should be involved in the research process. It is difficult during the regular study period, due to the time limits, the co-op breakes, and the the overload in study process. Thesis work at the senior year provides an excellent opportunity to involve students in a real applied research. In this way the following students have been tasted the sense of such work:

Ryan Brookshire, (for GM - Vehicle Operations/MFD Hdqtrs Warren MI ) Current thesis student.

Michele Clause, Information Behavior and Use among General Motors Employees (for GM Resources and Development, Warren, MI).

Nicholas O'Neil Benson, Correlation Evaluation between Gear Noise Test Machines and Transmission Testing (for General Motors Corp. Ypsilanti, MI), Graduated Sept. 2005.

Mark Ostin, Reducing the JD Power Wind noise Score for the GMT 800 (for General Motors, GM, Pontiac, MI), Graduated December 2004

Mark Soviar, The Statistical Implications of Test Repeatability and Product Variability on Target Setting and the Interpretation of Customer Functional Requirements (for the Faurecia Exhaust Systems, Inc, Toledo, Ohio) Graduated June 2004

Joel Benkelman, The Statistical Implications of Test Repeatability and Product Variability on Target Setting and the Interpretation of Customer Functional Requirements (for the Faurecia Exhaust Systems, Inc). Graduated

Jeff Kelso, Alternate Cooling Process for Thermoforming Applications, (for SOROC Products- Burton MI), Graduated June 2004.

Eric Sligay, Component Pricing Model for Vehicle Extended Service Contracts (For GMAC Insurance, Pontiac MI). Graduated June 2003. Eric applied everything he could to realize our ideas about Warranty Cost models.

Jeff A. Buero, Medical Professional Liability Increased Limit Factor/Deductible (for Towers Perrin - Southfield MI), Graduated Spring 2002

Michael Wheeler, Optimize Prediction through MRP Planning (for Stidd Systems, Greenport, NY). Graduated 2002.

Brian Kaufman, Quality Control on the scrap in the Tandem Master Cylinder Machining Line, (for the Fundley Corporation, Ohio). Graduation 2000.

Susan M. Camp, Development of a Predictive Life Test for Dynamic, Elastomeric, Oil Seals (For Federal-Mogul Corporation; Sealing Systems, Ann Arbor, MI). Graduated December 2000.

Charles Young, How the Vulcanization of Rubber Compound Affect the Static Rates, Dynamic Rates, and the Fatigue Life of a Molded Rubber Part (for the Yale-South Haven, Inc.), Graduation date June 1999. He applied the methods of Design of Experiment, Statistical modeling and Statistical Data Analysis in his study what process components, and up to what degree influence the properties of the ruber parts, produced by his company.

Roy Thorcell, Quality and Production Rate Improvement of the PL 2000 Headliner Assembly Line (for the United Technologies Automotive), Graduation date June 1999. Ne also applied the methods of Design of Experiment, and Statistical Data analysis to study the impact of some process characteristics on the creation of defects and other non-conformities of the car's headliner products.

Takesha M. Lyles, Statistical Engineering Problem Solving Techniques used to Improve Initial Customer Enthusiasm at Buick City Assembly Center, Graduation date June 1999. She did an excellent work for a complete statistical analysis of what causes the consumer's dissatisfacion from car performance, and found some technical details with supportive engineering solution, that really improved the assembly process, and removed the sources of defective production.

Darin William Witkowski, Initiate an automated test facility (for Case Corporation, Racine WI), Graduation date December 1998. He found a powerful system for test-searching defects in the computer-aided applications in trade-market business, by the means of simulations.

Douglas Neal Wright, Automatic Focus Station, (for Valeo-Sylvania Automotive Lightening), Graduation date December 1998. He worked on a new solution for bypassing the hand-opereted manipulation with the use of specific engineering solution, that might robotize it.

Brandi May Oldt, Characterization of office chair feature usage and structural response to usage loads (for Steelcase Inc., Grand Rapids MI), Graduating date December 1998. By the use of all statistical means she completed a complex field study to collect data for how many usage of specific tools (at least four), mounted on an office chair, may bring it to damage, or dissatisfaction. Than a standardized instruction was expected to come out of this study for the company.

Amy Lin Richards, Justification for building a new U.P.S. facility in Wixom, Michigan, with CO-advisor Dr. P. Richard, Graduation date June 1997. She used methods of statistical simulations of the calls, and times to response in order to determine where to build a new facility, and the number of vehicles to serve the needs.

David Thomas, Warranty Analysis of Statistical Data, with CO-advisor Dr. S. Chukova. Graduation date June, 1997. An attempt to statistically manipulate data from warranty claims for some Ford made cars, and to predict future warranty costs was made.

Impact on Curricula. The research with Thesis students and of my own has been used in the Laboratory work and Problem solving process in the class work. This is important for classes like Math-226 (Statistics for Management students, Part I), Math-227 (Statistics for Management students, Part II), and Math-408, Probability and Statistics for Engineers. The thesis advising process also is using the results and experience from the past.

COLLABORATION WITH OTHERS

Within the Department

At the SM Department of Kettering University I enjoyed and continue the fruitful collaboration in almost all the areas of my research with Dr. Stefanka Chukova, in the area of Queuing and Production Modeling with Dr. Srinivas Chakravarthy, and in the area of Characterization by analytical means and Optimization (where mostly the technique of differential equations is involved) with Dr. David Green, Jr., and Dr. Peter Stanchev in the area of Computer based immage technologies and on applications of the information technology in education, and also with many others. Our joint publications in the resent years may give the evidence for the results of this collaboration. This collaboration is an important part of the surrounding that makes me feel better and provides conditions to do research in the frame of very limited time left from our duty to teach much more than colleagues from other universities do.

Within the Institute

The Statistics Clinic is a good source of contacts with colleagues from other departments at Kettering University, to help them in solving their particular problems, and to start working on prospective joint projects. In this way a fruitful collaboration with Prof. Etim Ubong from the Department of Mechanical Engineering, was initiated in 1998, and some results on Design of Experiment (DOE) for a study of the fuel control of a V-6 Buick motor engine have been obtained. A Technical Report was issued within KU, and a papern was published, and another one is accepted for publishing in 2006. This collaboration continues with other projects involving statistics, or DOE in the work of an engineer researcher.

With researchers outside the Institute.

I like work in collaboration with others. It helps me immediately to adopt the current issue, to get a new challenging idea, or just an appeal, to share immediately my results with the closest expert in the field. It started with the collaboration with Dr. Eduard Danielyan during my PhD work in Moscow, Russia, it continued with the collaboration with many others, it continued in Bulgaria in closed collaborative work with my PhD students Khristo Karapenev, Chavdar Dokev, Kosta Yanev, Nikolai Kolev, Tran Zoan Fu, and to certain extend, with Dr. Chukova. This collaboration gave lots of results in my work with the colleagues Apostol Obretenov, Svetlozar Rachev, Maria Varbanova, Ivan Mirazchiiski, Liliana Boneva, Nikolai Yanev, Gero Gerov, Zaprian Zaprianov, Elena Karashtranova, and others. Thanks to them I always felt the friendly, nice and productive environment a young researcher needs in his or her career, especially when starting and gaining experience.

The closeness of my research interests with to those of researchers from other institutions and the occasional contacts with some of them at International meetings gathered me with professors Zohel Khalil and Jose Garrido from Concordia University in Montreal, Canada, with Prof. Jean-Pierre Dionfrom Universite de Quebec a Montreal, with Prof. Elart von Collani, and Herbert Vogt, from Wuerzburg University in Germany, with Prof. Mohammed El-Saidi from Ferris State, Big Rapids, Michigan. Recently, I actively work with Prof. Vladimir Rykov, from the Moscow University of Oil and Gas in Russia, with Prof. Zinovi Krougly from the University of Western Ontario, in London, Canada, with Prof. Mohammed El-Saidi from the Ferris University of Michigan, with Prof. Eugene Dshalalow from the Florida Institute of Technology Florida, with Prof. Jordan Jordanov from the University of Sofia, Bulgaria,with Prof. Nikolai Kolev from the University of Sao Paulo, Brazil. I am happy that I renewed my collaboration with my former Bulgarian colleagues and we started some new projects. Discussions, contacts, live interest to the subjects gave results in a series of joint publications with these researchers. I thank all of them for the good collaboration, for the mutual respect and permanent support and interest in what we use to and are doing, and in what we project to do in the nearest future. Especially I like to thank colleagues from Moscow, Montreal, London (Ontario), Michigan, and Brazil for their constant initiatives during the years and for the support they gave in the periods if time I needed at most.

INVITED TALKS and PRESENTATIONS

The 2nd International Conference on Advances in Big Data Analytics (ABDA'15), July 27-39, 2015, Las Vegas, Nevada: “From Events to Local Dependence between Random Units in Big Data” part of the WORLDCOMP’15.

The 9-th International

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