CHEMISTRY, PHYSICS AND ECOLOGY

APPLICATION OF CARBOHYDRATE ESTERS AS CO-PLASTICIZERS AND BIODEGRADABLE ADDITIVES IN PLASTICS
Dragomir Vassilev1, Nadezhda Petkova2, Milka Atanasova3, Milena Koleva1, Panteley Denev2
1 Technical University of Gabrovo, Department of Mathematics, Informatics and Natural Sciences
2 University of Food Technologies, Plovdiv, Department of Organic and Inorganic Chemistry
3 Technical University of Gabrovo, Department of Materials Science and Mechanics of Materials


INVESTIGATION OF FIRST ORDER PHASE TRANSITION PROCESS OF STRONIUM DURING HEATING WITH MOLECULAR DYNAMICS SIMULATIONS USING DIFFERENT POTENTIALS
Murat Celtek1, Unal Domekeli2, Sedat Sengul2
1 Faculty of Education, Trakya University, 22030, Edirne – Turkey
2 Dept. of Physics, Trakya University, 22030, Edirne – Turkey


A MOLECULAR DYNAMICS SIMULATION STUDY ON THE STRUCTURAL EVOLUTION OF LIQUID CALCIUM UNDER HIGH PRESSURE
Murat Celtek1, Sedat Sengul2, Unal Domekeli2
1 Faculty of Education, Trakya University, 22030, Edirne – Turkey
2 Dept. of Physics, Trakya University, 22030, Edirne – Turkey


THE STRUCTURAL PROPERTIES OF LIQUID MOLYBDENUM UNDER HIGH PRESSURE: MOLECULAR DYNAMICS SIMULATIONS STUDY
Sedat SENGUL1, Murat CELTEK2 , Unal DOMEKELI1
1 Department of Physics, Faculty of Science, University of Trakya, 22030, Edirne, Turkey
2 Faculty of Education, University of Trakya, 22030, Edirne, Turkey

TECHNOLOGIES IN MECHANICAL ENGINEERING AND DESIGN OF MACHINES AND INSTRUMENTS

THE HEURISTIC ALGORITHMS USED IN THE OPTIMIZATION OF LAMINATED COMPOSITE STRUCTURES: A REVIEW
Fatih KARAÇAM, İbrahim Batuhan ÇANCI
Trakya University, Department of Mechanical Engineering, 22030, Edirne, Turkey


MATERIALS WITH IMPROVED HEAT-PHYSICAL PROPERTIES FOR BALLONETS OF HYBRID AIRSHIP
Pavlyk Petro 1, Salenko A.2, Chencheva O.3 Shchetynin V.4
1 National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
2 National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
3 Kremenchug Mykhailo Ostrogradskyi National University
4 Kremenchug Mykhailo Ostrogradskyi National University


FORMATION OF INTERNAL THREADS WITH TAPS
Hristo Radev
Technical University of Gabrovo, Bulgaria


SELECTION OF FILTER PARTITION MATERIAL FOR ULTRASONIC CAVITATION FILTRATION
Andrii Zilinskyi
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

HYDRAULICS, PNEUMATICS AND HEAT ENGINEERING AND MECHATRONICS, METROLOGY AND QUALITY MANAGEMENT

GENERAL ANALYSIS OF SCHEME FOR ELECTROHYDRAULIC POSITIONING ACTUATORS
Li Qiang, Uzunov Oleksandr
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Ukraine


METHODS FOR INTENSIFICATION OF THE TRANSFER PHENOMENON IN THE CHEMICAL TECHNOLOGICAL PROCESS OF ELECTROLYSIS
Nochnichenko Ihor, Jakhno Oleg
National technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Ukraine

RHEOLOGICAL PROPERTIES OF FOAMING AGENTS USED BY UKRAINIAN FIREFIGHTERS
Stas S. V.¹, Kolesnikov D. V.¹, Bychenko A. O.¹, Koval O. D.²
¹Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Defence of Ukraine
²National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”


ANALYSIS OF NET ENERGY CONSUMPTION FOR COOLING HOTEL BUILDINGS
Mariya Raykova, Ivaylo Tsvyatkov
Technical University of Gabrovo, Bulgaria


OPTIMIZATION OF THE PARAMETERS OF THE ENCLOSING ELEMENTS OF BUILDINGS IN HEATING AND COOLING MODE
Mariya Raykova, Ivaylo Tsvyatkov
Technical University of Gabrovo, Bulgaria


COMMUTATION-MODULATION METHOD AND MEANS OF DETERMINING ACUPUNCTURE POINTS
Konstantyn Shevchenko1, Oleksiy Yanenko1, Mikhail Prokofiev2, Sergey Peregudov1, Vasyl Kuz3
1 Igor Sikorsky Kyiv Polytechnic Institute
2 Vasyl Stus Donetsk National University
3 Ternopil Ivan Puluj National Technical University


ANALYSIS OF MEASUREMENT UNCERTAINTY BUDGET FOR ELECTRICAL POWER QUALITY SIGNAL GENERATOR
Milan Simić, Dragan Živanović, Goran Miljković
University of Niš, Faculty of Electronic Engineering, Serbia

COMPUTER SYSTEMS, COMPUTER TECHNOLOGIES AND AUTOMATION

VOLATILITY INDEX ESTIMATION BY REVERSE ENGINEERING
Todor Balabanov
Bulgarian Academy of Sciences Institute of Information and Communication Technologies


PARETO FRONT ESTIMATION WITH A HEURISTIC SINGLE-OBJECTIVE SOLVER
Todor Balabanov
Bulgarian Academy of Sciences Institute of Information and Communication Technologies


SIMULATION ENVIRONMENT FOR STUDY OF LORAWAN TECHNOLOGY
Diyan Dinev1, Kaloyan Genov1
1 Technical University of Varna, Bulgaria


MOBILE ROBOT CONTROL USING ROBOT OPERATING SYSTEM
Uroš Pešović1, Marko Marković1, Velibor Trifunović1, Slađana Đurašević1, Željko Jovanović1
1 Faculty of technical sciences Čačak, University of Kragujevac, Serbia


SIMULATION ENVIRONMENT FOR STUDY OF BLUETOOTH LOW ENERGY TECHNOLOGY
Aydan Haka, Yordan Yordanov
Technical University of Varna, Bulgaria


DESIGN AND DEVELOPMENT OF A TEMPERATURE MONITORING SYSTEM
Diyan Dinev, Delcho Angelov
Technical University of Varna, Bulgaria


RESEARCH AND ANALYSIS OF ANTI-WINDUP TECHNIQUES IN THE CONTROL SYSTEMS
Georgi Mihalev, Stanimir Yordanov
Technical University of Gabrovo, Bulgaria


INTRODUCTION AND COMPARISON OF SOFTWARE PLATFORMS FOR MACHINE LEARNING
Aleksandar Lubenov, Georgi Mihalev
Technical University of Gabrovo, Bulgaria


HUMIDITY SENSOR ELEMENTS BASED ON Ce, Zn AND V-DOPED Ti-Si-O SURFACE LAYERS
Nedyu Nedev1, Zvezditza Nenova1, Stephan Kozhukharov2, Toshko Nenov1
1 Technical University of Gabrovo, Bulgaria
2 University of Chemical Technology and Metallurgy – Sofia, Bulgaria


SCALED ANTI-SYNCHRONIZATION BETWEEN TWO THIRD-ORDER CHAOTIC SYSTEMS WITH DOUBLE ATTRACTORS
Dragomir Chantov, Hristina Stoycheva
Technical University of Gabrovo, Bulgaria

LOW-COST SENSOR MODULE FOR GAS MEASUREMENTS
Stefan Ivanov, Todor Todorov, Toshko Nenov
Technical University of Gabrovo, Bulgaria