Volume: 44, Issue: 2 (50 Articles)
Research Article
Title: Process parameter optimization in fused deposition modeling of quad bike fixtures for improved mechanical properties and efficiency
Authors: Mohansing PAEDESHI, Pankaj BELDAR, Keshav NANDURKAR, Vishnu WAKCHAURE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:747-767
DOI: 10.14744/sigma.2026.2008
Viewed: (40) times
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Research Article
Title: Electrooxidation-based on-site disinfectant generation using IrO2-RuO2 coated titanium anodes: Investigation and development
Authors: Yeşim DEDE SAĞSÖZ, Alper Erdem YILMAZ, Beyhan KOCADAĞİSTAN, Donya AKBARZADEH YAZDİ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:768-780
DOI: 10.14744/sigma.2026.2009
Viewed: (31) times
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Research Article
Title: The effect of different light intensities on the growth of Chlorella Vulgaris in advanced biologically treated poultry slaughterhouse wastewater
Authors: Gamze KATIRCIOĞLU SINMAZ, İsmail Ayhan ŞENGİL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:781-793
DOI: 10.14744/sigma.2026.2010
Viewed: (27) times
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Research Article
Title: Optimization of fibre laser parameters for micro-texturing in piston ring manufacturing
Authors: Atulkumar PATIL, Pankaj BELDAR, Prashant KUSHARE, Vishnu WAKCHAURE, Uddhav SHIRSAT
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:794-819
DOI: 10.14744/sigma.2026.2013
Viewed: (27) times
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Research Article
Title: Exploring fractional dynamics of fourth order parabolic partial differential equations with power law Kernel
Authors: Shelly ARORA, Wenxiu MA, Sukhjit SINGH DHALIWAL, Atul PASRIJA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:820-842
DOI: 10.14744/sigma.2026.2014
Viewed: (27) times
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Research Article
Title: Finite element modeling and nonlinear analysis of tire deformation using hyperelastic material models
Authors: Ashok MACHE, Shivraj KOTHEKAR, Aniket SALVE, Nishant KULKARNI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:843-855
DOI: 10.14744/sigma.2026.2015
Viewed: (34) times
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Research Article
Title: Deep learning-based approach for automated detection of lumpy skin disease
Authors: Rohit SINGH, Ramraj DANGI, Lokesh MALVIYA, Akshay JADHAV
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:856-868
DOI: 10.14744/sigma.2025.00171
Viewed: (34) times
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Research Article
Title: Bioconservative effect of Cotula cinerea Delile on Klila cheese
Authors: Rym Nouria BENAMARA, Fatima SAHNOUNI, Asmaa BELGHARBI, Kada IBRI, Smail KHALED, Mirvette BENFRÉHA BENYELLES, Sihem ZITOUNI, Hadjer ZEMMOURI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:869-879
DOI: 10.14744/sigma.2026.2016
Viewed: (27) times
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Research Article
Title: Multi-zone commercial market building HVAC control strategy based on reinforcement learning algorithm models
Authors: Ganesh MURADE, Bhanu Pratap SONI, Ankit Kumar SHARMA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:880-893
DOI: 10.14744/sigma.2025.00051
Viewed: (31) times
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Research Article
Title: Narrowband and highly linear LNA design for 4.5 GHZ on 180NM CMOS
Authors: Serdar KAYA, Alparslan Çağrı YAPICI, Hayrullah YILDIZ, Mübarek KAYA, Mustafa D. CERCI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:894-907
DOI: 10.14744/sigma.2025.1904
Viewed: (23) times
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Research Article
Title: Missense single nucleotide polymorphisms analysis using bioinformatics tools in SURF1 and NDUFV1 genes associated with leigh syndrome
Authors: Aleyna ÖZTÜRK, Ömer Faruk KARASAKAL, Muhsin KONUK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:908-918
DOI: 10.14744/sigma.2026.2017
Viewed: (23) times
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Research Article
Title: Driving style recognition with machine learning for intelligent control of vehicles
Authors: Ahmet BEŞKARDEŞ, Yakup HAMEŞ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:919-953
DOI: 10.14744/sigma.2026.2018
Viewed: (26) times
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Research Article
Title: A study on numerical solutions of a fractional-order model for CAR T-cell therapy in leukemia using the laplace-adomian decomposition method
Authors: Rezaul KARİM, M. Ali AKBAR, M. A. BKAR PK, Pinakee DEY
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:954-969
DOI: 10.14744/sigma.2025.00053
Viewed: (24) times
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Research Article
Title: A hybrid deep learning framework with attention mechanism for anti money laundering in cryptocurrency transactions
Authors: Emine CENGİZ, Murat GÖK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:970-982
DOI: 10.14744/sigma.2026.2019
Viewed: (27) times
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Research Article
Title: Investigating the effectiveness of IS-DOS prevention mechanisms for mitigating DOS attacks in VANET
Authors: Harsh Pratap SINGH, Nagendra SINGH, Sai Kiran Naik BANOTH, Vedika PATIL, Neha ARYA, Neeraj SHRIVASTAVA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:983-993
DOI: 10.14744/sigma.2026.2020
Viewed: (26) times
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Research Article
Title: Solving Hamiltonian systems based on a data-driven deep learning algorithm
Authors: Tayfun ÜNAL, Ayten İrem IŞIK, Ünver ÇİFTÇİ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:994-1003
DOI: 10.14744/sigma.2026.2021
Viewed: (23) times
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Research Article
Title: Selection of optimal coating materials for bamboo reinforcement in concrete using entropy-fuzzy topsis model
Authors: Vivek PAHUJA, Pradeep Kumar GHOSH, Anil KUMAR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1004-1015
DOI: 10.14744/sigma.2025.00099
Viewed: (27) times
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Research Article
Title: Genetic algorithm based smart irrigation system for agricultural fields using linear regression and IOT to ensure proper utilization and saving of natural water resources
Authors: Abhijit Dnyaneshwar JADHAV, Archana A. CHAUGULE, Harish U. TIWARI, Prashant G. AHIRE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1016-1028
DOI: 10.14744/sigma.2026.2022
Viewed: (45) times
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Research Article
Title: The effects of the feature reduction by machine learning algorithms and feature decomposition by fuzzification on the mathematical model success criterion
Authors: Filiz KANBAY, Melike GÖKSU
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1029-1040
DOI: 10.14744/sigma.2026.2006
Viewed: (40) times
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Research Article
Title: Synthesis of compounds containing Cyano Anchor Groups, production of dye-sensitive solar cells and invesigation of the antibacterial properties of these compounds
Authors: Fatma AYTAN KILIÇARSLAN, Melda ALTIKATOĞLU YAPAÖZ, İbrahim ERDEN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1041-1047
DOI: 10.14744/sigma.2025.1944
Viewed: (44) times
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Research Article
Title: Evaluation of reliability and performance in multi-subsystem serial system: Analyzing K-out-of-n redundancy in complex series-parallel configuration using Copula methodology
Authors: Kabiru Garba IBRAHIM, Ibrahim YUSUF, Hamisu Ismail AYAGI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1048-1068
DOI: 10.14744/sigma.2026.2024
Viewed: (34) times
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Research Article
Title: A comprehensive approach to decision making in uncertain environments using picture fuzzy hypersoft topology
Authors: Muhammad IMRAN HARL, Muhammad SAEED, Muhammad HARIS SAEED
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1069-1081
DOI: 10.14744/sigma.2026.2026
Viewed: (43) times
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Research Article
Title: New ranking for picture fuzzy sets and novel way to address picutre fuzzy transportation problem
Authors: K. HEMALATHA, VENKATESWARLU B.
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1082-1093
DOI: 10.14744/sigma.2026.2028
Viewed: (38) times
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Research Article
Title: Bayesian computational methods for estimation of q-Weibull distribution
Authors: Ibrahim SADOK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1094-1110
DOI: 10.14744/sigma.2026.2030
Viewed: (48) times
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Research Article
Title: Sustainability-financial assessment indicators for renewable energy systems using fuzzy SWARA/WASPAS approach
Authors: Razieh KESHAVARZFARD, Mohsen ABOLHASANI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1111-1126
DOI: 10.14744/sigma.2025.00174
Viewed: (38) times
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Research Article
Title: Dynamic mechanical, morphological, and thermal characteristics of polypropylene/red mud polymer composites
Authors: Beril EKER, Özlem YAĞCI, Elif ULUTAŞ, Munir TAŞDEMIR, Volkan Murat YILMAZ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1127-1137
DOI: 10.14744/sigma.2026.2031
Viewed: (41) times
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Research Article
Title: Assessment of future renewable energy use and CO2 emissions of Türkiye and other countries in terms of climate targets of international agreements: An estimate with anfis
Authors: Abdullah Zübeyr ŞEKERCİ, Berk AYVAZ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1138-1152
DOI: 10.14744/sigma.2025.1958
Viewed: (45) times
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Research Article
Title: Optimized mix framework for accelerated carbonation concrete by ground granulated blast furnace slag and silica fume
Authors: Ramatai B. SOMWANSHI, Abhijeet R. NARDEY, Padmanabh Arun GADGE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1153-1171
DOI: 10.14744/sigma.2026.2032
Viewed: (50) times
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Research Article
Title: Investigation of correlation between standard penetration test blow counts and internal friction angles for loess soils
Authors: Murat GÜLEN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1172-1186
DOI: 10.14744/sigma.2025.00141
Viewed: (57) times
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Research Article
Title: Analyzing challenges to maximize the efficiency of industrial processes using carbon capture and hydrogen energy production from methane
Authors: Kareem A. ABDELKAREEM, Ahmed El-AWADY
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1187-1218
DOI: 10.14744/sigma.2025.00062
Viewed: (66) times
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Research Article
Title: Hyperparameter optimization web tool: Hyperopt
Authors: Fatma ALTINSOY, Muhammed Maruf ÖZTÜRK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1219-1239
DOI: 10.14744/sigma.2026.2033
Viewed: (62) times
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Research Article
Title: Numerical simulation of magnetohydrodynamic casson Williamson hybrid nanofluid flow accounting thermal stratification
Authors: Jintu Mani NATH, Ashish PAUL, Tusar Kanti DAS
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1240-1250
DOI: 10.14744/sigma.2026.2034
Viewed: (55) times
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Research Article
Title: Evaluation and effectiveness of student’s awareness on outcome-based education perception and implementation in teaching/learning activities a cross-sectional study
Authors: Vennila J., Baskar P., Venkatachalam M., Prakash V. S., Dafik, Devi P.
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1251-1260
DOI: 10.14744/sigma.2026.2035
Viewed: (76) times
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Research Article
Title: Leveraging unexplored regional dynamics and temporal interdependencies in crop yield prediction: A graph theory approach
Authors: Mamta KUMARI, Suman, Devendra PRASAD
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1261-1282
DOI: 10.14744/sigma.2025.1956
Viewed: (19) times
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Research Article
Title: A novel generalized lifetime q-distribution
Authors: Nurgül OKUR, Kaoubara DJONG-MON
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1283-1298
DOI: 10.14744/sigma.2026.2036
Viewed: (20) times
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Research Article
Title: Selection of longitudinal fin profiles for electronic cooling using Delphi AHP-TOPSIS method
Authors: Priyakhi SARMAH, Nishita GOGOI, Dikshita DUTTA, Dikshamoni SAIKIA, Tuhin DESHAMUKHYA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1299-1312
DOI: 10.14744/sigma.2026.2037
Viewed: (42) times
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Research Article
Title: Tribological analysis of textured ring-cylinder liner pair under varying operating conditions
Authors: Atulkumar PATIL, Pankaj BELDAR, Vishnu WAKCHAURE, Prashant KUSHARE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1313-1327
DOI: 10.14744/sigma.2026.2040
Viewed: (39) times
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Research Article
Title: Solving multi-depot vehicle routing problem with incoterms: A case study for export logistics
Authors: Gökçe ÖZDEN-GÜRCAN, Suna KÖSE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1328-1343
DOI: 10.14744/sigma.2025.00055
Viewed: (42) times
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Research Article
Title: Current research aspects in minimum quantity lubrication for turning operations: Cutting fluid as mono and hybrid nanofluid
Authors: Altaf NALBANDH, Neeraj CHAVDA, Rakesh BUMATARIA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1344-1368
DOI: 10.14744/sigma.2026.2041
Viewed: (39) times
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Research Article
Title: Effect of window glass area on optimum insulation thickness and environmental analysis
Authors: Meral ÖZEL, Serhat ŞENGÜR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1369-1382
DOI: 10.14744/sigma.2026.2042
Viewed: (40) times
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Research Article
Title: The role of building information modeling in enhancing public-private partnership project outcomes: Insights from Jordan and Malaysia
Authors: Ali Al-SHAMAYLEH, Sharifah ZAKARIA, Nur RAHIM
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1383-1398
DOI: 10.14744/sigma.2026.2043
Viewed: (39) times
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Research Article
Title: Assessing the impact of natural language processing-driven clustering on engineering students’ growth in mentoring programs
Authors: Pankaj BELDAR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1399-1418
DOI: 10.14744/sigma.2026.2044
Viewed: (46) times
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Research Article
Title: Enhancing dynamic performance of turbine-generator systems with optimal SVC control using hybrid CSA-GWO technique in seriescompensated networks
Authors: Sangeeta BAMBA, SK GUPTA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1419-1439
DOI: 10.14744/sigma.2025.000135
Viewed: (44) times
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Research Article
Title: Exploring transient potential steps on rotating disk electrodes with steady-state concentration profiles in single electron transfer reactions
Authors: V. SREELATHA DEVI, A. KAVITHA, M. L. SURESH, D. VIJAYABALAN, T. LOGANATHAN, R. MANIMUTHUKUMAR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1440-1455
DOI: 10.14744/sigma.2025.00103
Viewed: (47) times
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Research Article
Title: Arabic sign language recognition using enhanced optimization: Enhancing communication for people with hearing disabilities
Authors: Mahmoud ROKAYA, Hossam MESHREF, Mehedi MASUD, Ibrahim GAD, Abdulqader M. ALMARS, Basel MAHMOUD, Ammar ALQARNI, El-Sayed ATLAM
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1456-1480
DOI: 10.14744/sigma.2026.2045
Viewed: (52) times
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Research Article
Title: Deep neural network multilayer perceptron for Parkinson’s disease diagnosis using vocal data
Authors: Nalineekumari ARASAVALI, Vinod Kumar MOGADALA, LS Narasimharao POTHANA, Sasibhushanarao GOTTAPU
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1481-1490
DOI: 10.14744/sigma.2026.2046
Viewed: (105) times
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Research Article
Title: Dam-break analysis with infoworks ıcm model for earthquake-damaged Sultansuyu Dam: Different scenarios and computational costs
Authors: Burak ÇIRAĞ, Alp Ertuğrul ÖZER, Rıdvan KARAGÖZ, Bilal UTANCİK, Alaaddin Özgüray AYDIN, Mahmut FIRAT
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1491-1508
DOI: 10.14744/sigma.2026.2047
Viewed: (97) times
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Review Article
Title: Recent advancements in refractory materials and digital innovations in precision manufactuing
Authors: Mustafa M. MANSOUR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1509-1525
DOI: 10.14744/sigma.2025.00096
Viewed: (97) times
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Review Article
Title: Systematic review and analysis on recent techniques of photo sketch matching
Authors: Vishakha SEHDEV VERMA, Nidhi MALIK, Anshul BHATIA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1526-1539
DOI: 10.14744/sigma.2024.2048
Viewed: (106) times
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Review Article
Title: The impact of digital design on Façade performance: A literature review
Authors: Ayça AKKAN ÇAVDAR, Nilhan VURAL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: April, Year: 2026, Volume: 44, Issue: 2, (APR 2026), pp:1540-1559
DOI: 10.14744/sigma.2026.2049
Viewed: (188) times
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