programme - conference-burgasmilena nicheva, galya petrova 19. job satisfaction among medical...

“Prof. Dr Assen Zlatarov” UNIVERSITY

BURGAS

International Conference

EDUCATION, SCIENCE, ECONOMICS AND TECHNOLOGIES

PROGRAMME

25th - 26th June, 2015

BURGAS

2

PROGRAMME

Четвъртък Thursday

8.30 - 10.00 Регистрация във Факултет по обществени

науки

Registration at the Faculty of Social

Sciences, Ground floor lobby

10.00 - 10.15 Приветствие от ръководството на

Университет „Проф. д-р Асен Златаров” Welcome addresses

10.15 – 10.45 Пленарен доклад Plenary speech

11.00 - 13.00 Заседания по секции Section Meetings

13.00 - 14.00 Кафе пауза / обяд Coffee time / Lunch


19.00 Коктейл

Ресторант “Амор”

Welcome Cocktail

Restaurant “Amor”

Петък Friday


13.00 - 14.00 Кафе пауза / обяд Coffee time / Lunch


SECTIONS:

Секция 1

Section 1

Мениджмънт, маркетинг, туризъм

Икономика, финанси, счетоводство

Management, Marketing, Tourism

Economics, Finance, Accountancy

Зала 201 ФОН

Hall 201 FSS

Секция 2

Section 2

Педагогика и качество на

образованието Pedagogy and Quality of Education

Зала 206 ФОН

Hall 206 FSS

Секция 3

Section 3 Социални и хуманитарни науки Social Sciences and Humanities

Зала 221 ФОН

Hall 221 FSS

Секция 4

Section 4 Здравни грижи Health Care

Зала 101 ФОН

Hall 101 FSS

Секция 5

Section 5 Технически и природни науки Technical and Natural Sciences

Зала 201 НК

Hall 201 FNS*

*Hall 201 FNS - Inorganic campus

3

Секция / Section 1

Мениджмънт, маркетинг, туризъм, икономика, финанси, счетоводство

Management, Marketing, Tourism, Economics, Finance, Accountancy

Четвъртък / Thursday

25.06.2015 Зала 201 ФОН / Hall 201 FSS

Председател / Chairman: Assoc. Prof. Dr. Zlatina Karadzhova

Регламент / Time regulations: Представяне на докладите / Paper presentation – 10 min

Дискусия и въпроси / Discussion and questions – 5 min 11. 00 – 18. 00

1. Selfish principles of national socio-economic priorities

Ganna Likhonosova

2. Mechanism of the evaluation for the working personnel in the conditions to the innovative development

of enterprises

Тetyana Calinescu 3. Agrotourism as a tool for rural development in Turkey

Ibrahim Giritlioglu, Cevdet Avcikurt

4. Budgeting of “utility building” project (part 1)

Velika Bineva

5. Budgeting of “utility building” project (part 2)

Velika Bineva

6. The problem monetary risk

Evgeniy Stojanov

7. Catering market in Poland

Edyta Gheribi

8. Techniques for determining the priorities as a part of time management of managers in branch of tourism

Zlatina Karadzhova

9. Resource insurance of sport animation in the tourist centres

George Dimitrov

10. Students’ high sports achievements as a function of the training process in the groups for sports improving

Zlatka Diqeva

11. Physical education and sport in university “Prof. Dr. Asen Zlatarov” – Burgas

Spaska Andonova

12. Particularities of the tour guide oratory performances

Zahariy Dechev

13. Principles of the tour guide talks

Zahariy Dechev

14. On the use of online purchases and sales by business

Bozhana Gindeva

15. Methodology multi-criteria assessment to compare tariff plans of telecom operators from a consumer

perspective

Vanya Ivanova

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16. Effectiveness of advartising campaign of mobile operator

Irena Dimitrova

17. The business and social networks

Svetlana Kmetska

18. Health tourism in Bulgaria and the rehabilitator’s place in it

Milena Nicheva, Galya Petrova

19. Job satisfaction among medical professionals

Stanislava Pavlova, Veselin Valkov

20. Educational business game in business logistics

Ivan Dimitrov, Adile Dimitrova

21. Factors for structuring the international logistics activities

Adile Dimitrova, Ivan Dimitrov

22. Some problems of supply and maintenance of stocks

Stoyan Tranev

23. For modern production

Stoyan Tranev

24. Influence of the factors of work environment and development of burnout syndrome in nurses – a cross-

sectional study in Bulgaria

Rumyana Stoyanova, Rositsa Dimova

25. Tourism and cultural heritage – development perspectives and potential issues in the island of St

Anastacia

Nikola Naumov

26. Mobile commerce as a technological challenge for tourism

Vladan Ivanović, Miodrag Brzaković, Jasmina Madžgalj, Marija Stojiljković

27. Accounting evidence of procurement and selling goods with value added tax in trading companies in

Serbia

Jelena Simić, Vladan Ivanović, Miodrag Brzaković, Jasmina Madžgalj

28. Financial reporting in a function of providing quantitative accounting information

Jelena Simić, Vladan Ivanović

29. Analysis of public debt with emphasis on the Republic of Serbia

Milos Stojanovic, Aleksandar Stankovic

30. Financial instruments of the european union for the development of tourism in rural areas of Serbia

Marko Gašić, Sonja Oklobdžija, Goran Perić, Dragana Ilić

31. Research of employee satisfaction in tourism center Vrnjačka spa

Goran Perić, Snežana Mihajlov, Marko Gašić, Marija Stojiljković

32. Semantic web in e-tourism

Miloš Stojanović, Predrag Stamenković, Sonja Arsić

Постери / poster session

Commodity structure of Bulgarian international trade with sub-aharan africa

Eduard Marinov

Research of inactive young population and youth labor market policies in Bulgaria

Stefan Raychev

Character, goals and range of activity of the branch organizations

Vanya Georgieva

Branch organizations – legal framework, authorities, membership and additional registrations

Vanya Georgieva

Characteristics of environment and their influence on organization structuring

Radmila Micić

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Педагогика и качество на образованието

Pedagogy and Quality of Education

Четвъртък / Thursday 25.06.2015

Зала 206 ФОН / Hall 206 FSS

Председател / Chairman: Assoc. Prof. Dr. Tinka Ivanova


Дискусия и въпроси / Discussion and questions – 5 min 11. 00 – 18. 00

1. The design of new approaches to the organizing of professionally- oriented practice of future maths

teachers

Inessa Kondaurova

2. The methodological background and the essential characteristics of the concept “general cultural

competence”

Ekaterina Balakireva 3. Interacton of ethic, cultural and religious organisations in the educational system of the dniester region

Nicolai Dimcenco 4. Definitions and simptomatology of the "burnout" syndrome

Natalia Vitanova, Neli Miteva

5. Impact of new technologies on child play

Mariana Todorova

6. Incentives and penalties for teachers in bulgarian school today

Natalia Vitanova

7. Integrative links in the preparation of the students for teaching musics

Bozhanka Baycheva 8. Innovative technologies in the training of medical specialists

Biyanka Torniova, Tanya Paskaleva

11. Bycicle tourism/cycling sports - development and implementation in physical education and sports

program in „Prof. Dr Asen Zlatarov’’ university, town of Burgas

Nina Bogdanova, Petya Gerdjikova

12. Demand for ict specialists and their joint preparation by academia and industry

Tereza Stefanova

13. E-learning for development of clinical competences of nurses and midwives – review

Angelina Kirkova, Daniela Taneva, Nonka Mateva, Yordanka Tzokova, Diruhi Amudjian

14. eLearning evolution in the information society

Iliya Krastinkov

15. Profusion of information in internet as a barrier in front of the student’s access to information

Maria Dishkova

16. Specifics and interaction between algorithmic and heuristic in training

Mariana Todorova

17. Essence and development of the technological culture of students of college education in tourism

Antonina Nedkova

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18. Internship in college education in tourism

Antonina Nedkova

19. Bulgarian sociological studies on the rights of the child in education

Еlena Petkova

20. Practical aspects of using ms excel solver in solving optimization tasks

Ruska Dimitrova, Jechka Dimitrova

21. Projects in the education of students, the condition of acquiring skills to work in multidisciplinary teams

Iskra Petkova, Danelina Vacheva

22. Ideas of maria montessori on the child and childhood

Tinka Ivanova

23. Reformative and didactic ideas from the first half of the 20th century

Tinka Ivanova

24. Petko Slaveikov ideas Bulgarian school

Violeta Atanasova

25. Rights and obligations of Bulgarian school teachers during revival

Violeta Atanasova

26. Pedagogical practices in undergraduate programs fashion in nbu

Yana Vasileva

27. The scientific literacy seen through the students’ eyes – future science teachers

Rumyana Yankova

28. The task in chemistry and evironmental protecton and natural science skills of the pupils

Hristivelina Zhecheva

29. Calculating limits using definite integrals

Jechka Dimitrova, Maxim Valkachovski

30. Structure of music movement forms for preschoolers age

Zlatka Dimitrova

31. Related and dependence between the art and the quality of teaching in medical university

Marinela Grudeva

32. Relationships and dependencies between career development and qualification of teachers in the high

schools

Marinela Grudeva, Jana Rangelova, Todorka Kostadinova

33. The socio-pedagogical aspects in the activity of the class supervisor in comprehensive school

Elena Dicheva

34. Health care professionals’ appraisal of distance learning for master degree programs

Nonka Mateva, Angelina Kirkova, Bianka Torniova,Tania Boeva, Kristina Kilova,

Teodora Dimcheva, Zhivko Peychev

35. Implementation of the competence - based approach in modern higher engineering education

Diana Izvorska

36. Facts from media education history in countries where this research area is leading

Lilia Lozanova

37. Еlectronic media and educational process

Lilia Lozanova


Sport in the education and health sector human

Maria Becheva, Nicola Vakrilov, Nina Belcheva, Radoslavа Katzarska, Gergana Pavlova

The time - the constantly lacking resource of the school manager

Svetlozar Vatsov

Challenges faced measuring of the competencies

Svetlozar Vatsov

Student opinion survey trainers in medical college on methods of control and assessment of knowledge

and skills

Petya Kasnakova

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Социални и хуманитарни науки

Social Sciences and Humanities

Четвъртък / Thursday 25.06.2015


11:00 – 15:00

Председател / Chairman: Prof. Dr. Nedelcho Nedelchev

Регламент / Time regulations: Представяне на докладите / Paper presentation – 10 min Дискусия и въпроси / Discussion and questions – 5 min

Презентации / Presentations

1. Reducing and Preventing Violence in Schools through Community Development Principles

Bilyana Velikova-Tzonkova

2. Modern Aspects in the Assessment of effectiveness of Social Programming

Venelin Terziev, Ekaterina Arabska

3. Ways of Effective Social Policy Implementation through Encouragement of Social Activity

Venelin Terziev, Sevdalina Dimitrova, Ekaterina Arabska

4. Controlled Developement of Social Programming

Venelin Terziev, Evgeniy Stoyanov

5. Management Control in Social Programming

Venelin Terziev, Evgeniy Stoyanov

6. Survey of the Awareness of Students – Bachelors From Medical University Plovdiv about the Problems of

the Demographic Culture and Politics in the Republic of Bulgaria

Daniela Taneva, Yordanka Tzokova, Radoslava Katzarska, Maria Becheva

7. Notes on Functionality and Efficiency of the Old-Bulgarian Barrier System in Eastern Balkan Mountains

Dimcho Momchilov

8. Kinds of Inducement in the Business Tourist Communication – Characteristics, Usage and Language

Means for Their Utterance

Dobrinka Toteva

9. Substitution and/or Subversivism. “Yazovetzut” by Emilian Stanev Converses with Tikhick and Nazareus

Marina Vladeva

10. How Unlimited Access to Internet Information Determinates the Blackout in Parents’ Society

Maria Dishkova

11. The State of Israel in the 13th Century BC

Nedelcho Nedelchev

12. Brief Overview of the Problem on the Formation of Moral Values in Children

Neli Yordanova

13. About the Paradigmatic Thinking: Philosophical Aspects and Problems

Nikolay Atanasov

14. Bulgarian-Greek collision in the Negotiations for Macedonia during the First Balkan War

Petar Parushev

8

15. The Negotiations Between Bulgaria and Serbia and Signing of the Treaty of Friendship and Union

between the Kingdom of Bulgaria and the Kingdom of Serbia from February 29, 1912

Petar Parushev

16. Законодателните инициативи в областта на българската тютюнева индустрия през периода на

Временното руско управление

Valentin Kitanov


Woman’s Rights Issue under the Scope of Capitalism Critiques

A. Baran Dural, Sevim Ekinci

Urbanization Process and Social Housing in Turkey (1980-2000): Başakşehir as a Case Study

A. Baran Dural

The Bulgarian Unification, the Abdication of Knyaz Alexander I Battenberg and the Opportunity for

Improving the Russo-Bulgarian Relations (1885 – 1886)

Gita Yovcheva

The Mission of General Kaulbars – an Attempt of the Russian Royal Diplomacy to Establish Total

Political Control in Bulgaria

Gita Yovcheva

Otto von Bismarck and the League of the Three Emperors

Penka Peeva

Otto von Bismarck, Austro-Hungary, Russia and the Peace in Europe

Penka Peeva

The Profile of Employees and Supervision Applying in Social-Pedagogic Services

Ivan Karagyozov


Здравни грижи

Health Care


25.06.2015 Зала 101 ФОН / Hall 101 FSS

Председател / Chairman: Assoc. prof. Dr. Galina Terzieva


Дискусия и въпроси / Discussion and questions – 5 min 11: 00 – 17: 00

Презентации / Paper presentation

1 Risk Factors which Are Raising the Level of Stress in Students

Albena Andonova

2 Student Satisfaction by Participating in a Project „Students Practice“

Albena Andonova

3 Roman Baths in Bulgaria

Antoaneta Grozeva

9

4 Algorithm for Prophylaxis and Rehabilitation of Diabetes Mellitus and Its Complications

Antoaneta Grozeva

5 Project "Students’ Practice" - Motivation and Opportunities for Developing Professional Skills in Students Assistant

– Pharmacists

Bozhidarka Hadzhieva, Anna Mihaylova, Petya Koleva, Nina Koleva

6 Surgical Treatment of Inguinal Hernia by Metod McVay Combined with Implantation of Prolene Mesh

Valentin Vasilev

7 Treatment of Skin Complications of Chronic Venous Disease by Light Therapy Bioptron

Valentin Vasilev

8 On Patient Safety and Some EU Documents

Valentin Stoyanov, Konstantin Stoyanov

9 Medicine and Social Healthcare Students’ Attitude towards Patients’ Safety

Valentin Stoyanov

10 Risk Factors For Development Of Cardiovascular Diseases: Realities, Trends

Galina Terzieva, Katya Popova

11 Nursing Students’ Competence Regarding Drug Therapy

Galina Chaneva

12 Nursing Students’ Dietary Habits

Gergana Petrova, Victoria Atanasova, Penka Gatseva

13 Effectiveness of Mud and Lye From Pomorie for Improving Patients’ Clinical Parameters and Health Status

Gergana Angelova-Popova, Zlatina Stoyanova-Borisova

14 Patients Satisfaction with Organisation and Conduct of the Rehabilitation in Specialized Hospitals for Rehabilitation

– National Complex EAD

Desislava Bakova, Nonka Mateva, Teodora Dimcheva

15 Developing an Expert System Module in Homeopathy in Acute Injuries of Different Etiologies

Zhivko Peychev, Miroslav Nachev

16 Formation and Evaluation of "Midwife" Students’ Competence to Collect Health Information

Zdravka Atanasova, Kremena Miteva

17 Provision of Health Information as a Professional Competence of Midwives

Zdravka Atanasova, Kremena Miteva

18 Self-Assessment of Students’ Readiness to Participate in the Monitoring of Pregnancy

Kremena Miteva, Zdravka Atanasova

19 Pre-Graduation Practice in the Training of "Midwife" Students

Kremena Miteva, Zdravka Atanasova

20 Communication Models During Pregnancy

Lilia Perusanova – Pavlova

21 Factors Causing Stress in Professional Activities of Nurses and Midwives in Small Cities in Southwest Bulgaria

Lilia Perusanova – Pavlova

Петък / Friday 26.06.2015


Председател / Chairman: Assoc. prof. Dr. Galina Terzieva


Дискусия и въпроси / Discussion and questions – 5 min 11: 00 – 17: 00

Презентации / Paper presentation

22 Ethical Values of Healthcare and Personalized Medicine

Lyudmila Chakarova, Sylvia Mladenova, Radka Goranova

23 About Some Ergonomic Requirements for Medical Work – Prerequisite for Quality and Efficiency

Magdalena Platikanova

24 Opinion of Healthcare Students Concerning the Subject "Hygiene and Medical Ecology"

Magdalena Platikanova

25 The Volunteer Engagement and the Nursing Students

Mayya Atanasova

26 Influence of Role Conflict and Ambiguity on Turnover of Nurses

Mariana Dimitrova, Sonya Toncheva

10

27 The Development of Competences for Intercultural Communication in the Training of Geriatric Specialists - an

Important Factor for Qualitative Culturally Sensitive Geriatric Care

Mariya Dimova, Hristina Milcheva

28 Emotional Intelligence in the Professional Training of Medical Laboratory Assistants

Maria Proshenska, Penka Argilashka, Maria Kukularova

29 Application of Health Management in the Practice of the Specialist in Healthcare

Pepa Bikova; Maria Dimitrova; Galina Chaneva; Ivanka Stambolova

30 Psychotherapeutic Programme for Education of Families with Demented Patients

Polina Balkanska, Nikola Georgiev

31 Training of Health Professionals on Breastfeeding Promotion – Reality and Perspectives

Radka Goranova- Spasova

32 Gas Chromatography of the Pharmaceutical Analysis. Guidelines for Making Methodological Decisions

Svetlana Georgieva, Lyuben Grigorov, Tanya Topalova, Maya Georgieva

33 Patient-Oriented Nursing

Silviya Kyuchukova

34 Mental Burnout of the Teacher in Higher School - Methods of Prevention

Silviya Kyuchukova

35 Benefits, Advantages and Disadvantages of the Practical Application of Personalized Medicine

Sylvia Mladenova, Lyudmila Chakurova

36 Non-Traditional Methods in Nursing Student’s Education

Snezhana Dragusheva

37 Kinesitherapy and Thalassotherapy in Treatment and Rehabilitation of Post-Fracture Conditions

Snezhina Georgieva

38 Kinesitherapy and Sand Applications on the Entire Body (Psamotherapy) – Alternative of Mud Treatment in Post-

Fracture Conditions in Geriatrics

Snezhina Georgieva

39 Factors, Influencing Professional Adaptation of Nurse

Stanislava Pavlova, Тamara Tsvetkova, Teodora Evtimova

40 Model for Construction and Financing of Nursing Services Providing Home Care for Children with Special Needs at

the Age from 0 to 6

Tamara Tsvetkova, Teodora Evtimova, Stanislavа Pavlovа

41 Combined Therapy - Clopidogrel and PPIs

Tanya Topalova, Svetlana Georgieva, Lyuben Grigorov, Maya Georgieva

42 Attitudes of "Midwife" Students towards the Realization of Family – Consulting Activity

Teodora Evtimova, Thamara Cvetkova

43 Contemporary Trends in Training Midwives in Particular Subjects at the Higher School

Hristina Milcheva

Постери / Poster session

Motivational Factors in the Professional Activity of a Dental Mechanic

Ani Аtanasova, Sonya Тoncheva, Мihaela Varneva

Components of the Health Care Related to Emotional Exhaustion

Galya Yankova, Magdalena Alexandrova, Lubomir Marinov

Relationship between Aspects of Care and Dimensions of Emotional Exhaustion

Galya Yankova, Penka Marinova, Petya Asparuhova

Pain in Patients with Acute Myocardial Infarction

Diana Ivanova

Assessment of Pain in the Postoperative Period in Patients with Cardiac Surgery

Diana Ivanova, Galina Tchaneva

Dynamics of Level of Empathy in the Process of Education of Nursing Students

Lyubomir Marinov, Petya Asparuhova, Galya Yankova

The Cares about Disable Humans as a Professional Choice of the Nurse

Nadka Vasileva, Antoaneta Terzieva, Galina Chaneva, Maria Dimitrova

Level of Knowledge of High School Students for A Reasoned Choice of Nursing Profession

Nadka Vasileva, Ivanka Stambolova, Galina Chaneva, Antoaneta Terzieva

Emotional State of Patients in Period of Hospitalization

Petya Asparuhova, Liobomir Marinov, Galya Yankova

Methodology of Rehabilitation in Isolated Fractures of Ulna Distal Third with Dislocated Head of Ulna (Fracture Of

Galeazzi) – Presentation of the Case

Petya Kasnakovа

11


Технически и природни науки

Technical and Natural Sciences


25.06.2015 Зала 201 НК / Hall 201 Inorganic campus, Faculty of Natural Sciences

Председател / Chairman: Assoc. Prof. Dr. Svetlana Zheleva

Регламент / Time regulations: Представяне на докладите / Paper presentation – 10 min Дискусия и въпроси / Discussion and questions – 5 min

11. 00 – 13. 00

Презентации / Presentations

1. Study of Technological Risk Installation and Regeneration of Spent Sulfuric Acid in „Lukoil Refinery

Burgas” in the Method Mozar

Рetranka Pipeva, Plamena Atanasova, Sabina Nedkova, Borislav Karaivanov

2. Analysis of the Causes of Accidents at Work and Risk Assessment in a Slaughterhouse for Extraction of

Red Meat

Sabina Nedkova, Plamena Atanasova, Marusya Lybcheva, Petranka Pipeva, Vladimir Ivanov

3. Computational Evaluation of Evaporation Processes From Surface of Atanasovsko Lake

Radostin Kutsarov, Ivan Chobanov

4. Development of Information Subsystem of Graphical Display of Belt Conveyor Characteristics in Their

Design

Nikollay Kiktev

5. Probabilistic Graphical Model for Risk Assessing of Developing Diabetes Type 2

Lyudmila Dimitrova, Olga Golubeva

6. Using Bayesian Networks in the Diagnosis of Diseases that Manifest with Increased Shadows of the

Mediastinum

Lyudmila Dimitrova, Olga Golubeva

7.

Постери / Poster session

Study of the Influence of Power Supply on Thermoelectric Cooler’s Operating Mode

Anatoliy Aleksandrov, Ivaylo Belovski

8. Investigation of Possibility for Improving of Phase Stability of Gasoline-Alcoholic Blends

Anton Palichev, Yordanka Tasheva, Todor Palichev

9. Mathematical Models for Examination of Transients Processes in Electric Circuits of Second Order

Vera Mechkova, Liliya Staneva, Blagoi Mechkov

10. Study on the Precursors of Mutagenic Substances in Meat Products

Diana Indzhelieva

11. Determination of Polycyclitic Aroma Carbohydrates in Cooked- Smoked Sausages

Diana Indzhelieva

12. Characterization of Silica Material from Magnesium and Lead Oxide Treated with Agriculture Waste

Dobromir Yordanov, Zlatotsvet Tsonev, Galina Yordanova

13. New Trends in Quality Management in Laboratories for Testing Crude Oil, Fuels and Lubricants

Dobromir Yordanov

12

14. BI Software Market

Dorina Kabakchieva

15. Determination of Biodiesel Fuel Compositions by Gas Chromatographic Methods

Zilya Mustafa, Rumyana Milina

16. In Silico Prediction of the Mutagenic Potential of Pharmaceuticals

Milen Todorov

17. Characteristics of Geology and Technology of Industrial Minerals in Area Bolyarka Located in the

Municipality of Bolyarovo Yambol from Gabbro Dioritis Porphyrites and Basalts from the Field Bolyarka

Milluvka Stancheva, Tsvetan Dimitrov

18. Biochemical Properties of Endoxylanases from Aspergillus Niger A-3

Nadka Bakaloa, Svetla Petrova, Dimiter Kolev

19. Aspergillus Awamori Xylanases: Catalytic Properties and Mechanism

Nadka Bakalova, Svetla Petrova, Dimiter Kolev

20. Quantum Chemical Study on [Fe(3-Amino-1,2,4-Triazole)3]2+

by Density Functional Theory

Rumyana Yankova

21. Kinetic of Non-Isothermal Degradation of the Products from the Glycolysis of Pet Waste and Crude

Glycerol

Svetlana Genieva, Nikola Todorov, Slavka Stambolova

22. Photooxidative Degradation with UV- Light of Polypropylene, Induced by Iron (III) Acetylacetonate as

Pro-Oxidant

Stiliyana Mihaleva, Dimitrina Kiryakova, Atanas Atanassov

23. Kinetics of the Extraction of Carotenoids from the Peels of the Bulgarian Tomato Varieties – Process

Modeling

Tsvetko Prokopov, Milena Nikolova

24. Modelling of Passive System of Quarter Car Model with Matlab in Relation to Seminar Exercises in

Theory of Automobile

Yulian Petrov, Liliya Staneva, Stancho Edrev