Volume: 42, Issue: 2 (30 Articles)
Research Article
Title: ON Ψ-QUANTUM FRACTIONAL OPERATORS: EXISTENCE, UNIQUENESS AND ULAM-HYERS STABILITY
Authors: Norravich LİMPANUKORN, Idris AHMED, Muhammad Jamilu IBRAHİM
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:313-320
DOI: 10.14744/sigma.2024.00034
Viewed: (6) times
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Research Article
Title: COMPARISON OF FEATURE-BASED SENTENCE RANKING METHODS FOR EXTRACTIVE SUMMARIZATION OF TURKISH NEWS TEXTS
Authors: Ertürk ERDAĞI, Volkan TUNALI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:321-334
DOI: 10.14744/sigma.2023.00076
Viewed: (8) times
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Research Article
Title: INFLUENCE OF BURNISHING PROCESS ON SURFACE INTEGRITY OF INCONEL 718 FABRICATED BY LASER POWDER BED FUSION ADDITIVE MANUFACTURING
Authors: Mert KAYA, Nihal YAMAN, Emre TAŞCIOĞLU, Yusuf KAYNAK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:335-343
DOI: 10.14744/sigma.2023.00101
Viewed: (3) times
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Research Article
Title: INVESTIGATING THE USABILITY OF KEVLAR AND STEEL FIBERS AS A HYBRID IN CONCRETE PAVEMENTS
Authors: Erhan MOLA, Osman Ünsal BAYRAK, Fatih İrfan BAŞ, Halim Ferit BAYATA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:344-355
DOI: 10.14744/sigma.2022.00080
Viewed: (6) times
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Research Article
Title: HAND WARMER TYPES, SILICA AND ZEOLITE 4A AS POTENTIAL HAND WARMERS
Authors: Fatma Burcu ALP, Devrim BALKÖSE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:356-365
DOI: 10.14744/sigma.2024.00035
Viewed: (6) times
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Research Article
Title: EXAMINATION OF STRENGTH REDUCTION FACTOR IN CFRP-CONFINED COLUMNS UNDER AXIAL COMPRESSION
Authors: Aysun TEKİN ÖZER, Sema ALACALI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:366-382
DOI: 10.14744/sigma.2024.00036
Viewed: (9) times
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Research Article
Title: LOW NOISE AMPLIFIER DESIGN FOR HIDDEN WIRELESS LAN APPLICATIONS USING BAND PASS FILTER WITH GEOMETRIC MEAN PROTOTYPE ELEMENT VALUES
Authors: Mehmet DUMAN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:383-389
DOI: 10.14744/sigma.2022.00081
Viewed: (5) times
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Research Article
Title: THE ADAPTIVE EXTENDED KALMAN FILTER APPROACH FOR THE LOTKA-VOLTERRA MODEL AND APPLICATION TO ECONOMIC VARIABLES
Authors: Levent ÖZBEK, Volkan HACIOĞLU
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:390-398
DOI: 10.14744/sigma.2024.00037
Viewed: (9) times
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Research Article
Title: VECTOR AUTOREGRESSIVE CLUSTERING FOR REDUNDANCY ANALYSIS IN AIR POLLUTION MONITORING NETWORKS AT TÜRKİYE
Authors: Aytaç PEKMEZCİ, Muhammet Oğuzhan YALÇIN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:399-406
DOI: 10.14744/sigma.2023.00074
Viewed: (7) times
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Research Article
Title: A NEW APPLICATION OF FRACTIONAL GLUCOSE-INSULIN MODEL AND NUMERICAL SOLUTIONS
Authors: Zafer ÖZTÜRK, Halis BİLGİL, Sezer SORGUN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:407-413
DOI: 10.14744/sigma.2023.00022
Viewed: (7) times
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Research Article
Title: CORROSION BEHAVIOR OF N80 TUBING STEEL IN THE PRODUCED WATER
Authors: Duygu ARSLAN VATANSEVER, Simge ARKAN OZDEMIR, Nurhan CANSEVER, Esra ILHAN SUNGUR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:414-424
DOI: 10.14744/sigma.2024.00038
Viewed: (5) times
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Research Article
Title: A COMPARATIVE ANALYSIS OF SOFTWARE-DEFINED NETWORK CONTROLLERS IN TERMS OF NETWORK FORENSICS PROCESSES AND CAPABILITIES
Authors: Altuğ ÇİL, Mehmet DEMİRCİ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:425-437
DOI: 10.14744/sigma.2022.00107
Viewed: (5) times
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Research Article
Title: ANTHOCYANIN AND BIOACTIVITY PROPERTIES OF BERBERIS CRATEGINA DC. IN BUFFER SYSTEM AND APPLE JUICE: IMPACT OF TEMPERATURE, TIME, AND PH; PREDICTION USING ARTIFICIAL NEURAL NETWORK
Authors: Havva POLAT KAYA, Tuğba KOÇ, Lütfiye EKİCİ, Gülhan TOGA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:438-449
DOI: 10.14744/sigma.2024.00028
Viewed: (5) times
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Research Article
Title: PHYSIOLOGICAL, GENETIC AND TRANSCRIPTIONAL CHARACTERIZATION OF FUSARIUM GRAMINEARUM ISOLATES
Authors: Tuğba TEKER, Syeda Anum KHALID, Emre YÖRÜK, Gülruh ALBAYRAK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:450-458
DOI: 10.14744/sigma.2022.00047
Viewed: (4) times
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Research Article
Title: 1D FUZZY INVERSE LOGIC METHOD AND ITS USE IN THE DESIGN OF THICK REINFORCED CONCRETE COLUMNS
Authors: Ertekin ÖZTEKİN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:459-474
DOI: 10.14744/sigma.2022.00083
Viewed: (6) times
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Research Article
Title: EXPERIMENTAL ANALYSIS OF A SHAKE TABLE TEST OF STRIP FOOTING ON TWO LAYERED REINFORCED SOIL
Authors: Litan DEBNATH
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:475-489
DOI: 10.14744/sigma.2024.00039
Viewed: (14) times
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Research Article
Title: INVESTIGATION OF STABILITY AND ACTIVITY OF QUATERNIZED ZINC PHTHALOCYANINE PHOTOSENSITIZER WITH FUSED EXTENDED CONJUGATION IN VITRO CONDITIONS
Authors: Yeşim KARAHAN, Gülşah GÜMRÜKÇÜ KÖSE, Gülnür KESER KARAOĞLAN, Dolunay ŞAKAR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:490-496
DOI: 10.14744/sigma.2023.00026
Viewed: (16) times
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Research Article
Title: THE EFFECT OF HESPERIDIN ON NEURON-SPECIFIC ENOLASE AND OXIDATIVE DAMAGE IN THE PRE-ECLAMPSIA MODEL
Authors: Emel SERDAROĞLU KAŞIKÇI, Burcu ÇEVRELİ, Tayfun GÖZLER, Muhsin KONUK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:497-502
DOI: 10.14744/sigma.2024.00040
Viewed: (16) times
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Research Article
Title: MODELING AND ANALYSIS OF SCHOTTKY DIODE BRIDGE AND JFET BASED LIÉNARD OSCILLATOR CIRCUIT
Authors: Kübra ÇAKIR, Reşat MUTLU
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:503-515
DOI: 10.14744/sigma.2022.00082
Viewed: (16) times
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Research Article
Title: ARTIFICIAL NEURAL NETWORK AND MULTIPLE REGRESSION ANALYSIS FOR PREDICTING ABRASIVE WATER JET CUTTING OF AL 7068 AEROSPACE ALLOY
Authors: Fuat KARTAL, Arslan KAPTAN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:516-528
DOI: 10.14744/sigma.2023.00102
Viewed: (13) times
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Research Article
Title: SECURE ENCRYPTION OVER THE RING F2 + UF2 + VF2 + UVF2
Authors: Neriman ŞOLT, Selda ÇALKAVUR, Murat GÜZELTEPE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:529-533
DOI: 10.14744/sigma.2024.00041
Viewed: (17) times
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Research Article
Title: A CASE STUDY ON LEAN OCCUPATIONAL SAFETY
Authors: Mesut ULU, Semra BİRGÜN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:534-548
DOI: 10.14744/sigma.2022.00108
Viewed: (14) times
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Research Article
Title: TURKISH COFFEE SUPPRESSES THE PROGRESSION OF C6 GLIOMA CELLS VIA THE ACTIVATION OF APOPTOSIS
Authors: Melike ERSÖZ, Zeynep Mine COŞKUN YAZICI, Berfin ÜLGEN BAĞIRGAN, Hamit Baturalp SAYINBATUR, Aynur ACAR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:549-554
DOI: 10.14744/sigma.2024.00042
Viewed: (14) times
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Research Article
Title: A NEW MODELLING APPROACH FOR AIR TRANSPORTATION: A CASE STUDY FOR TOTAL NUMBER OF AIR PASSENGERS PER MONTH
Authors: Reşit ÇELİK, Hasan Aykut KARABOĞA, İbrahim DEMİR, Erdal GÜL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:555-565
DOI: 10.14744/sigma.2024.00043
Viewed: (16) times
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Research Article
Title: ON A NON-RIEMANNIAN QUANTITY OF (α,β)-METRICS
Authors: Semail ÜLGEN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:566-571
DOI: 10.14744/sigma.2023.00127
Viewed: (17) times
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Research Article
Title: ON A BOUNDARY VALUE PROBLEM WITH SYMMETRIC DOUBLE WELL POTENTIAL AND SPECTRAL PARAMETER IN THE BOUNDARY CONDITION
Authors: Elif BAŞKAYA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:572-577
DOI: 10.14744/sigma.2024.00044
Viewed: (28) times
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Research Article
Title: COMPARATIVE PERFORMANCE ANALYSIS OF EPSILON-INSENSITIVE AND PRUNING-BASED ALGORITHMS FOR SPARSE LEAST SQUARES SUPPORT VECTOR REGRESSION
Authors: Ömer KARAL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:578-589
DOI: 10.14744/sigma.2024.00045
Viewed: (31) times
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Review Article
Title: REVISITING THE CRACK CLOSURE AND ITS EFFECT ON FATIGUE LIFE OF COMPONENTS
Authors: Ashutosh KUMAR, G.A. HARMAIN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:590-599
DOI: 10.14744/sigma.2024.00046
Viewed: (31) times
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Review Article
Title: INVESTIGATION OF MECHANICAL PROPERTIES OF COPPER-GRAPHENE COMPOSITES IN TERMS OF PRODUCTION METHODS AND ADDITIVE RATIOS: A REVIEW
Authors: Alper MUTLU, Uğur ÇAVDAR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:600-613
DOI: 10.14744/sigma.2023.00126
Viewed: (28) times
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Technical Note
Title: INVESTIGATION OF HEAVY METAL CONCENTRATIONS AND DETERMINATION OF ESTIMATED DAILY INTAKE AND HEALTH RISK INDEX INFANT FORMULA AND BABY FOODS IN ZAHEDAN IN 2020
Authors: Aram DOKHT KHATIBI, Maryam BAZZI, Davoud BALARAK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2024, Volume: 42, Issue: 2, (APR 2024), pp:614-620
DOI: 10.14744/sigma.2024.00047
Viewed: (40) times
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