Vol. 2 (2026): Proceedings of the International Conference on Secure Systems Design and Technology Development.

View Vol. 2 (2026): Proceedings of the International Conference on Secure Systems Design and Technology Development.

Published: 17.09.2026

Full Issue

ENGINEERING SCIENCES AND PRODUCTION TECHNOLOGY

SECURE CROSS-BORDER INNOVATION CLUSTERS IN INDUSTRY 4.0: A MODEL AND EMPIRICAL STUDY OF THE BURGAS–EDIRNE REGION

Sibel Ahmedova

15-21
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STUDY OF THE INFLUENCE OF TIRE AIR PRESSURE ON NATURAL FREQUENCIES OF A MACPHERSON SUSPENSION

Krasimir Ambarev, Stiliyana Taneva, Valyo Nikolov

23-27
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POSSIBILITIES FOR INCREASING THE ACCURACY OF ACTIVE CONTROL IN TURNING ON CNC MACHINE TOOLS THROUGH ADAPTIVE ACCURACY CONTROL

Iliya Chetrokov, Silviya Salapateva

29-37
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ARTIFICIAL INTELLIGENCE IN LOGISTICS: ADOPTION PATTERNS, PERFORMANCE EFFECTS, AND MARKET STRUCTURE

Siyka Demirova

39-44
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INTELLIGENT PRODUCTION AND BUSINESS PROCESSES: APPLICATION IN THE MECHANICAL ENGINEERING ENTERPRISES OF NORTHEASTERN REGION, BULGARIA

Siyka Demirova, Mihail Ivanov, Sibel Ahmedova

45-49
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INTEGRATED MANAGEMENT OF MARKETING AND LOGISTICS RELATIONSHIPS WITH CUSTOMERS THROUGH DIGITAL TECHNOLOGIES IN THE INDUSTRIAL SECTOR

Svetlana Dimitrakieva, Siyka Demirova, Dobromira Ivanova

51-57
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REVIEW OF RECENT ADVANCES IN HIGH PERFORMANCE ALUMINIUM ALLOYS FOR AEROSPACE STRUCTURES

Margarita Dimitrova, Stoyan Tanev, Adelina Miteva

59-66
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SURFACE MODIFICATION OF STEEL 1.2343 (EN ISO 4957) BY ION NITRIDING

Desislava Dimova, Boyan Dochev, Teodor Solakov, Mikaela Dubaradzieva, Nikolay Ivanov

67-72
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INVESIGATION THE INFLUENCE OF MULTI-WALLED CARBON NANOTUBES AND AMORPHOUS CARBON ON THE MECHANICAL PROPERTIES OF THERMOSETTING POLYMERS

Boyan Dochev, Desislava Dimova, Filip Ublekov, Hristo Penchev, Nikola Tomanov, Yavor Boychev

73-77
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INVESTIGATION OF DIFFERENCES IN LIGHT TRANSMISSION IN TRANSLUCENT MATERIALS USED IN ADDITIVE MANUFACTURING

Kliment Georgiev, Misho Matsankov, Atanas Radulov, Mario Dechev, Teodor Demirev

79-84
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METHODOLOGY FOR TESTING BEARINGS BY THE DAMPLING OSCILLATION METHOD

Kliment Georgiev, Iva Naydenova, Pavlina Katsarova

85-89
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METHODOLOGY FOR PERFORMING A MEASUREMENT SYSTEM ANALYSIS WITH FOUR OPERATORS

Kliment Georgiev

91-96
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FROM CONVENTIONAL CAMOUFLAGE TEXTILES TO METAMATERIAL-BASED COMBAT PROTECTION: REVIEW

Mariya Georgieva, Petia Gencheva

97-102
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HYDRODYNAMIC JET REACTION ANALYSIS FOR MARINE PROPULSION CONTROL UNITS

Lyuba Gyurova, Cvetelina Velkova

103-106
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NUMERICAL MODELING OF CONJUGATE HEAT TRANSFER BETWEEN A FLUID AND A SOLID USING ANSYS FLUENT

Lyuba Gyurova

107-111
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ENGINEERING ASPECTS OF INNOVATION MANAGEMENT SYSTEMS

Tzvetelin Gueorguiev, Hasan Hasanov, Petar Tsvyatkov

113-117
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DETERMINATION OF OPTIMAL UNDERWATER CUTTING PARAMETERS FOR SHIP HULL STEEL OF SCIENTIFIC RESEARCH VESSEL RSV 421 "ST. ST. CYRIL AND METHODIUS"

Hristo Hristov, Momchil Manov

119-123
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OPPORTUNITY TO INCREASE THE COMPETITIVENESS OF THE INDUSTRIAL ENTERPRISE AND TRANSITION TO INDUSTRY 4.0 THROUGH THE IMPLEMENTATION OF BUSINESS PROJECTS FROM THE EUROPEAN STRUCTURAL AND INVESTMENT FUNDS

Mihail Ivanov, Siyka Demirova, Sibel Ahmedova

125-129
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ANALYSIS OF ACCURACY IN DIFFERENT POSITIONING SCHEMES USING STATISTICAL METHODS

Hristo Yakimov, Hristo Radev, Hasan Hasanov, Irina Aleksandrova

131-137
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COMPETENCY-FOCUSED AVIATION ENGLISH FOR AIRCRAFT MAINTENANCE

Vanya Katsarska, Tarek Assassi

139-143
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MULTIFACTORIAL STUDY OF THE INFLUENCE OF AN ANAMEGATOR ON OIL ON THE CHANGE IN THE TRIBOTECHNICAL PARAMETERS OF THE FRICTION PAIR

Evgeni Kehayov, Emil Yankov, Velko Rupetsov, Georgi Komitov

145-150
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IMPROVING THE ACCURACY OF GEAR TRANSMISSION BY DIVIDING THE KINEMATIC ERROR

Kiril Lengerov, Ivan Tashev

151-154
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OPTIMIZATION OF STATISTICAL ANALYSIS FOR GEAR INSPECTION

Kiril Lengerov, Ivan Tashev

155-158
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STUDY OF THE QUALITY IINDICATORS OF THE SURFACES OF GEAR BLANKETS AFTER COMBINED PROCESSING BY CUTTING AND SURFACE PLASTIC DEFORMATION

Kiril Lengerov, Desislava Petrova, Angel Lengerov, Ivan Mitev

159-165
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COMPUTER VISION CAPABILITIES FOR ORTHOPHOTOGRAMMETRY AND 3D TERRAIN MODELING

Kiril Lengerov, Georgi Komitov, Evgeni Kehayov, Ivan Mitkov

167-171
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NON-DESTRUCTIVE EVALUATION OF ION-NITRIDED AND CARBONITRIDED LAYERS ON BH11 AND D2 TOOL STEELS: EDDY CURRENT TESTING AND BARKHAUSEN NOISE METHODS

Velichko Machev, Viktor Georgiev

173-176
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INVESTIGATION AND IDENTIFICATION OF SHIP HULL STEEL GRADE FOR MAINTENANCE AND REPAIR PROCEDURES ON SCIENTIFIC RESEARCH VESSEL RSV 421 "ST. ST. CYRIL AND METHODIUS"

Momchil Manov, Hristo Hristov

177-183
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SYNTHESIS IMPACT PROTECTION IMPLEMENTED IN A PARTICULAR FACILITY THROUGH FRICTION DAMPERS

Marin Marinov

185-188
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HYBRID PLASMA-SOL-GEL TECHNOLOGIES FOR FLAME RETARDANCY AND NIR CAMOUFLAGE OF MILITARY TEXTILES: REVIEW

Rumyana Milyovska, Petia Gencheva

189-196
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ON THE VIBRATIONS OF MULTI-CYLINDER MARINE DIESEL GENERATORS

Yuliyan Minchev, Ivaylo Minchev

197-202
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AUTOMATED LOADING AND UNLOADING OF CNC VERTICAL MILLING CENTERS

Penko Mitev, Agop Izmirliyan, Atanasi Tashev, Yordan Stoyanov

203-208
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BENCHMARKING FOR INTEGRATION OF ARTIFICIAL INTELLIGENCE IN STRATEGIC FIRM MANAGEMENT

Neli Nikolova

209-216
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ANALYSIS OF BRAKING DECELERATION AND THE EFFICIENCY OF AUTOMOTIVE BRAKING SYSTEMS USING MATLAB

Yuliyan Petrov, Liliya Staneva

217-221
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MATHEMATICAL MODELING OF SAFE VEHICLE–PEDESTRIAN DISTANCE WITH INTERACTIVE VISUALIZATION

Yuliyan Petrov, Liliya Staneva

223-227
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TURNING INNOVATION INTO A PRODUCT CONCEPT

Desislava Petrova, Ivan Mitev

229-234
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INVESTIGATION AND MODELLING OF SURFACE ROUGHNESS DURING MILLING OF GJL-250 GRAY CAST IRON AND S235JR STEEL USING MIXED CERAMIC TOOLS

Hristo Radev, Hristo Yakimov, Irina Aleksandrova

235-241
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MODELING AND OPTIMIZATION OF MATERIAL FLOWS IN A SECTION FOR MACHINING IN THE PRESENCE OF ALTERNATIVE TECHNOLOGICAL PROCESSES

Silviya Salapateva, Radostina Mihova, Iliya Chetrokov

243-250
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ALGORITHM FOR FINDING OPTIMAL PLACEMENT OF OBJECTS IN A MACHINING SECTION IN THE PRESENCE OF ALTERNATIVE TECHNOLOGICAL PROCESSES

Silviya Salapateva, Radostina Mihova, Iliya Chetrokov

251-257
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INCREASING THE ACCURACY OF MACHINING BY MEANS OF COMPLEX PROCESS MANAGEMENT THROUGH ACTIVE AND ADAPTIVE CONTROL

Silviya Salapateva, Iliya Chetrokov

259-264
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DIGITAL TRANSFORMATION OF THE BULGARIAN ROSE IN SUSTAINABLE FASHION DESIGN THROUGH SPECIALIZED MACHINE EMBROIDERY SOFTWARE

Margaret Sivova, Nikolay Tranchev

265-272
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INTEGRATING BULGARIAN NATIONAL IDENTITY INTO SUSTAINABLE FASHION DESIGN THROUGH DIGITAL TECHNOLOGIES

Margaret Sivova, Desislava Ivanova

273-278
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DEVELOPMENT OF CROSS-CUTTING OPTIMIZING SCANNER FOR ASPEN AND BLACK ALDER BOARDS

Vladimirs Šatrevičs, Māris Asafrejs, Viktorija Skvarciany, Inga Eriņa

279-284
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COMMERCIALISATION POTENTIAL FOR SCANNERS IN WOOD PROCESSING. CROSS-CUTTING OPTIMIZING SCANNER FOR ASPEN AND BLACK ALDER

Vladimirs Šatrevičs, Māris Asafrejs, Viktorija Skvarciany, Simona Survilaite

285-291
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3D AND LINE SCANNING CAMERA SYSTEM CONCEPT IN REAL-TIME WOOD PROCESSING

Vladimirs Šatrevičs, Gundars Kuļikovskis, Jēkabs Baumanis, Viktorija Skvarciany

293-300
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DEVELOPMENT OF A 3D AND LINE-SCANNING CAMERA FOR AUTOMATIC WOOD DEFECT MARKING

Vladimirs Šatrevičs, Gundars Kuļikovskis, Jēkabs Baumanis, Viktorija Skvarciany

301-307
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ANALYSIS OF OPTIMAL SHAPE OF CAM MECHANISM WITH ROLLER ROCKER

Ivan Tashev, Kiril Lengerov

309-313
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MODELLING OF ACTIVE VIBRATION ISOLATION SYSTEM FOR AIR COMPRESSOR

Ivan Tashev, Kiril Lengerov

315-320
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OBSERVATIONS OF THE EVOLUTION OF THE SOLAR DIAMETER AND SOLAR CONSTANT WITH CUBSAT 3U SATELLITES

Desislava Teneva, Penka Stoeva, Ognyan Ognyanov, Alexey Stoev, Mina Spasova

321-325
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ARCHITECTURE OF AN AUTONOMOUS ELECTRIC GARBAGE TRUCK WITH AI MANAGEMENT

Aleksandar Tsvetanov, Benislav Dimitrov, Desislava Petrova

327-333
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PITOT TUBE SIMULATION: A KEY TOOL FOR REAL ENGINEERING APPLICATIONS IN MARINE ENGINEERING AND MECHATRONICS

Cvetelina Velkova

335-338
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TENSILE STRENGTH OF COPPER ALLOYED STRUCTURAL POWDER STEELS

Вeata Vlahova

339-344
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INFLUENCE OF STRENGTH CHARACTERISTICS ON THE TECHNOLOGICAL PARAMETERS OF THE BOROALUMINIZING PROCESS

Вeata Vlahova

345-349
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WEAR RESISTANCE OF MEDIUM ALLOY TOOL STEELS AFTER SINGLE-COMPONENT SURFACE ENRICHMENT

Вeata Vlahova

351-355
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MACHINABILITY OF SHORT ROTARY PARTS MADE OF IMPROVEABLE STEELS WITH ROBOTIC FEEDING

Вeata Vlahova

357-361
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ANALYSIS OF SOFTWARE AND ORGANIZATIONAL SOLUTIONS FOR SUPPORTING INNOVATION MANAGEMENT IN INDUSTRIAL ENTERPRISES IN THE CONTEXT OF INDUSTRY 4.0

Tsanka Zlateva-Petkova, Daniela Toneva

363-371
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DEVELOPMENT OF A METHODOLOGICAL FRAMEWORK FOR INTEGRATING INTELLIGENT TECHNOLOGIES IN ENGINEERING INNOVATION MANAGEMENT

Tsanka Zlateva-Petkova, Daniela Toneva

373-381
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LASER TECHNOLOGY

LASER POLISHED STAINLESS STEEL USE IN FOOD INDUSTRY, A REVIEW

Arturs Abolins, Didzis Adejanovs

385-390
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SCRATCH-TEST RESPONSE OF COLOR LASER-MARKED AISI 304 STAINLESS STEEL FOR A 7 × 7 LASER-PARAMETER MATRIX

Imants Adijāns

391-395
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BAYESIAN METHOD FOR RECURSIVE COMBINATION OF MEASUREMENT AND PRIOR INFORMATION FOR ACCURACY IMPROVEMENT IN VIDEO-BASED MEASUREMENTS

Dimitar Dichev, Iliya Zhelezarov, Tsanko Karadzhov, Kaloyan Libchev

397-403
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AN ADAPTIVE KALMAN FILTER FOR VIDEO-BASED TRACKING WITH DYNAMIC ADAPTATION OF COVARIANCE MATRICES

Dimitar Dichev, Iliya Zhelezarov, Tsanko Karadzhov, Kaloyan Libchev

405-411
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LASER MARKING ON SAMPLES WITH CHROMIUM-NICKEL COATING

Nikolay Dolchinkov, Milen Tortorikov

413-417
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METHOD FOR SYNTHESIS OF STATE CONTROLLER WITH OBSERVER FOR AN ELECTROHYDRAULIC POWER TRANSMISSION SYSTEM

Hristo Hristov

419-425
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AN EXPERIMENTAL STUDY OF THE FREQUENCY RESPONSE OF AN ELECTROPNEUMATIC POSITIONING SYSTEM WITH A RODLESS CYLINDER FOUR HIGH SPEED PNEUMATIC VALVES AND PWM CONTROL

Hristo Hristov, Georgi Iliev, Ivailo Nikolaev

427-431
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STATE CONTROLLER SYNTHESIS FOR AN ELECTROHYDRAULIC POWER TRANSMISSION SYSTEM

Hristo Hristov

433-439
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MODELING AND SIMULATING DYNAMIC PROCESSES IN AN ELECTROPNEUMATIC POSITIONING SYSTEM WITH PWM CONTROL AT DIFFERENT LENGTHS OF THE PNEUMATIC LINES

Georgi Iliev, Hristo Hristov

441-447
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DEVELOPMENT OF A METHOD FOR CALIBRATION OF A SEMICONDUCTOR TEMPERATURE MEASUREMENT SENSOR

Tsanko Karadzhov, Iliyan Gospodinov, Dimitar Dichev, Iliya Zhelezarov

449-455
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COMPARATIVE ANALYSIS OF NUMERICAL AND EXPERIMENTAL RESULTS IN LASER HARDENING OF 42CRMO4 STEEL

Lyubomir Lazov, Nikolay Angelov, Prodan Prodanov, Normunds Teirumnieks

457-464
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INFLUENCE OF PASS CONFIGURATION, RASTER STEP, AND SCANNING SPEED ON LASER COLOR MARKING OF AISI 304 STEEL

Lyubomir Lazov, Nikolay Angelov, Erika Teirumnieka

465-473
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OPTIMIZATION-BASED FIRST-ORDER SYNTHESIS OF INFRARED TRIPLET SYSTEMS FOR LWIR IMAGING

Dimcho Pulov

475-481
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