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Volume: 44 Issue: 1 Year: 2026
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Volume: 44 Issue: 1 - February 2026

Research Article

1. Enhancing sound quality through audio beam formation: A MVDR algorithm approach with linear microphone arrays
Swapnil S. JADHAV , Pranali B. KASHID , Lalit N. PATIL , Sayali S. JADHAV , Pooja KOLI , Vikash AGRAWAL , Subhash GADHAVE , Santosh D. SANCHETI , Yashraj M. PATIL , Atul A. PATIL
DOI: 10.14744/sigma.2026.1957 Pages : 1-10
Abstract Full Text PDF
2. Intelligent fruit sorter for quality evaluation of guava fruit using image analysis
Tejas G. PATIL , Sanjay P. SHEKHAWAT , Lalit K. TOKE , Lalit N. PATIL , Atul A. PATIL
DOI: 10.14744/sigma.2026.1964 Pages : 11-22
Abstract Full Text PDF
3. Classifications of artificial intelligence trading systems by using WASPAS approach based on picture fuzzy soft aggregation operators
Tahir MAHMOOD , Jabbar AHMMAD
DOI: 10.14744/sigma.2026.1965 Pages : 23-41
Abstract Full Text PDF
4. Commiphora myrrha-functionalized bacterial cellulose as a potential wound healing biomaterial
Seda GENÇ ŞİMŞEK , Cenk DENKTAŞ , Nelisa TÜRKOĞLU
DOI: 10.14744/sigma.2026.1966 Pages : 42-54
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5. Clustering business news for strategic insight: An unsupervised learning approach
Gaurav V. DAHAKE , M. S. ALI
DOI: 10.14744/sigma.2026.1967 Pages : 55-73
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6. Audio fingerprinting for song identification using discrete wavelet transform
Swati Mukesh DIXIT , Daulappa Guranna BHALKE
DOI: 10.14744/sigma.2026.1968 Pages : 74-82
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7. The effect of eccentricity and asymmetry in the plan on the performance level in existing steel buildings with a medium bending frame
Kaveh NEZAMISAVOJBALAGHI
DOI: 10.14744/sigma.2026.1969 Pages : 83-92
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8. Multiclass anemia classification based on multivariate adaptive regression spline method: Developing a decision support system for doctors
Nagihan YAĞMUR , Idiris DAĞ
DOI: 10.14744/sigma.2025.1970 Pages : 93-104
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9. Properties of N, acetylamide-rich biopolymers from five different aquatic invertebrates
Oluwashina Philips GBENEBOR , Abimbola Patricia POPOOLA
DOI: 10.14744/sigma.2026.1971 Pages : 105-114
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10. Study of improved quantum particle swarm optimization for modeling of wasted surgical mask
Subhojit CHATTARAJ , Sk Tanbir ISLAM , Pijush DUTTA , Mahuya DAS
DOI: 10.14744/sigma.2026.1972 Pages : 115-126
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11. Metaheuristic and cryptographic approaches with upgraded discrete and lifting wavelet transform for effective data security in steganography
S. SARATHA , V. MURUGAN , P. Arockia Jansi RANI
DOI: 10.14744/sigma.2026.1973 Pages : 127-139
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12. Metaheuristic algorithms for multi objective vehicle routing problem
İlknur TÜKENMEZ , Onur KAYA
DOI: 10.14744/sigma.2026.1974 Pages : 140-152
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13. Electricity energy consumption forecasting using LSTM and NAR
Parastou BEHGOUY , Abbas UĞURENVER
DOI: 10.14744/sigma.2025.00056 Pages : 153-161
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14. Screening of Trichoderma spp. for biofertilizer and biocontrol potential in vitro
Kemal KARACA , Rengin ELTEM
DOI: 10.14744/sigma.2026.1975 Pages : 162-173
Abstract Full Text PDF
15. Structural, thermal, morphological, and rheological properties of yeast extracts obtained from Saccharomyces cerevisiae, Saccharomyces boulardii, and Kluyveromyces marxianus
Furkan DEMİRGÜL , Ömer ŞİMŞEK , Enes DERTLİ , Osman SAĞDIÇ
DOI: 10.14744/sigma.2026.1976 Pages : 174-183
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16. Technological developments and sustainable construction in Iraqi architecture
Osamah A AL-TAMEEMI
DOI: 10.14744/sigma.2026.1977 Pages : 184-199
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17. Evaluation of the effects of sustainable development goals on improvement of air quality in cities
Şahin KORKMAZ , Damla MUSTAFAOĞLU , Zeynep CEYLAN
DOI: 10.14744/sigma.2025.00140 Pages : 200-209
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18. An innovative group decision-making approach utilizing picture fuzzy hypersoft expert set
Muhammad IHSAN , Muhammad SAEED , Muhammad Yasir HAYAT MALIK
DOI: 10.14744/sigma.2026.1978 Pages : 216-221
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19. Investigation of civil engineering students’ general disaster preparedness beliefs
Esra Zehra BİÇER ÖZDEMİR , Özlenur CESUR AKIN , Egemen ÜNAL , Salih MOLLAHALİLOĞLU
DOI: 10.14744/sigma.2026.1979 Pages : 222-233
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20. Impact of halloysite clay on the thermal degradation behaviour, kinetics analysis, and pyrolysis product distribution during catalytic pyrolysis of bakelite
Chinmaya KAR , Achyut KUMAR PANDA , Pabitra MOHAN MAHAPATRA
DOI: 10.14744/sigma.2026.1980 Pages : 234-251
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21. Simultaneous electricity generation and removal of Sars-Cov-2 from wastewater in microbial fuel cells
Sıla ARSLAN , Tunç ÇATAL
DOI: 10.14744/sigma.2026.1981 Pages : 252-261
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22. An exact analysis of chemical reaction and porosity effects for mixed convective magnetohydrodynamics Casson fluid
Nur Fatihah MOD OMAR , Zulkhibri ISMAIL , Rahimah JUSOH , Muhammad Azrin AHMAD , Ahmad Qushairi MOHAMAD
DOI: 10.14744/sigma.2025.00060 Pages : 262-272
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23. Image segmentation for semi-supervised fuzzy clustering with KL-divergence using Kernel method
Muthulakshmi K , Jayalakshmi M
DOI: 10.14744/sigma.2026.1982 Pages : 273-291
Abstract Full Text PDF
24. Optimization of precision machine part manufacturing by integration of grey-taguchi method with principal component analysis
Kübra EROL , Selda KAPAN ULUSOY , Ercan ŞENYIĞIT
DOI: 10.14744/sigma.2025.00101 Pages : 292-308
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25. Improved error limits for numerical integration via some perturbed trapezoidal inequalities
Duygu DÖNMEZ DEMİR , Gülsüm ŞANAL
DOI: 10.14744/sigma.2026.1983 Pages : 309-317
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26. Hall current’s effect on MHD boundary layer compressible flow of fluid past a stretching sheet with viscous dissipation
Bandita DAS , Sunmoni MUDOI , Dipak SARMA
DOI: 10.14744/sigma.2026.1984 Pages : 318-328
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27. Classification of cluster analysis techniques by using hesitant bipolar complex fuzzy multi-attribute decision-making approach based on dombi prioritized aggregation operators
Hafiz Muhammad WAQAS , Tahir MAHMOOD , Ubaid ur REHMAN
DOI: 10.14744/sigma.2026.1985 Pages : 329-350
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28. Harnessing AI for real-time detection and mitigation of technostress in digital epoch
Rachana PARIKH , Vishal DAHIYA
DOI: 10.14744/sigma.2026.1986 Pages : 351-359
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29. Semantic algorithm for land segmentation and building recognition to protect the Egyptian cultıvated land based on u-NET and CNN
Mahmoud ROKAYA , Majed ALWATEER
DOI: 10.14744/sigma.2026.1987 Pages : 360-374
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30. Computational fracture analysis of 3Y-TZP dental ceramics with low Al2O3 using peridynamics
Alireza MORADKHANI , Mohammad HOSEINPOUR GOLLO
DOI: 10.14744/sigma.2025.1922 Pages : 375-387
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31. Enhancing bidirectional gated recurrent unit with activation mechanism for anomaly classification for network security
N. Senthil MADASAMY , A. Noble Mary JULIET , P. Boopathi RAJAN
DOI: 10.14744/sigma.2026.1988 Pages : 388-403
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32. Predicting survival rates of patients with cardiovascular diseases using ensemble techniques
Bharati KARARE , Anushree Anand PANDE , Pratibha WAGHALE , Amruta Tapas PAUL , Chanchla TRIPATHI , Lalit DAMAHE
DOI: 10.14744/sigma.2026.1989 Pages : 404-422
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33. Development of plant extract-loaded electrospun nanofiber for the prevention of biofilm-associated infections
Sevim Feyza ERDOĞMUŞ , Cengiz SARIKURKCU
DOI: 10.14744/sigma.2026.1990 Pages : 423-438
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34. Electric bus preference with analytical hierarchy process and grey relational analysis combination in public transportation considering modern trend criteria: Kayseri, Türkiye case study
Aslan İNAN , Huzeyfe KARA
DOI: 10.14744/sigma.2024.00158 Pages : 439-452
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35. Vibration-based fault detection in induced draft fans using unsupervised machine learning approaches
Ramesh BHANDARE , Pankaj BELDAR , Shyam MOGAL
DOI: 10.14744/sigma.2026.1991 Pages : 453-464
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36. Formation and analysis of thermal images for infrared radiations from top of the atmosphere
Usama Ayub YOUSUFZAI , Muhammad Jawed IQBAL , Faisal AFRIDI
DOI: 10.14744/sigma.2026.1992 Pages : 465-477
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37. Unmasking sarcasm to understand depression: A machine learning exploration using news headlines
Vanita Ganesh KSHIRSAGAR , Sunil Kumar YADAV , Nikhil KARANDE
DOI: 10.14744/sigma.2026.1993 Pages : 478-489
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38. Influence diagnostic in beta ridge regression model: Simulation and application
Javaria Ahmad KHAN , Atif AKBAR , B M Golam KIBRIA
DOI: 10.14744/sigma.2026.1994 Pages : 490-500
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39. Comparative assessment of novel hooped and conventional Pelton wheel turbine runner using downcomer nozzles of different materials and exit diameter through experimental investigations
H. N. LAKDAWALA , V. K. PATEL , G. C. CHAUDHARI , S. A. CHANNIWALA , T. R. PATEL
DOI: 10.14744/sigma.2026.1995 Pages : 501-527
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40. Metaheuristic-based machine learning models for accurate battery remaining useful life prediction in renewable energy storage system
Shravani GANDHI , Ashlesha CHOPANE , Anushka PARKHI , Sakshi DESHMUKH , Smita KULKARNI
DOI: 10.14744/sigma.2026.1996 Pages : 528-544
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41. SWARA & EDAS integration using spherical fuzzy sets in agricultural field
Betül KARA , Muhammed Zakir DENİZ , Umut AYDIN , Melis Almula KARADAYI
DOI: 10.14744/sigma.2026.1997 Pages : 545-558
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42. Mechanical vibration-assisted enhancement of weldment mechanical properties
Japhia Sudarsan NALLA , Basanta Kumar PALAI , P. Govinda RAO
DOI: 10.14744/sigma.2025.00059 Pages : 559-574
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43. Molecular dockings of secondary metabolites to evaluate anthelmintic potential
Dilara KARAMAN , Oya GİRİŞGİN , Ahmet Onur GİRİŞGİN
DOI: 10.14744/sigma.2026.1998 Pages : 575-591
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44. Analysis of efficient solar operated air cooling system for cold storage warehouses
Prakash P. THOMBARE , Ravindra D. PATIL
DOI: 10.14744/sigma.2026.1999 Pages : 592-604
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Review Article

45. Artificial intelligence, machine learning, and deep learning applications in the engineerıng fields – A comprehensive review
Haneen DARWISH , Walaa DARWISH , Hiba DARWISH , Abdallah DARWISH , Issa W. ALHMOUD , Osamah ALSHRAIDEH , Ahmad ALZUBAIDI
DOI: 10.14744/sigma.2024.00126 Pages : 605-636
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46. A comprehensive review on traditional and cutting-edge approaches for wind speed/power forecasting
Muskaan AHUJA , Sanju SAINI
DOI: 10.14744/sigma.2026.2000 Pages : 637-662
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47. A review of photovoltaıc plants and battery energy storage systems in terms of power systems stability
Bora ÇAVDAR , Eda KARACA , Hatice OKUMUŞ , Fatih Mehmet NUROĞLU
DOI: 10.14744/sigma.2025.00093 Pages : 663-679
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48. An overview of optimum calcination parameters for improved pozzolanic activity in biomass ash
Manoj Ashok SADAFALE , Mangesh Vasant MADURWAR
DOI: 10.14744/sigma.2026.2001 Pages : 680-697
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49. The role of hybrid nanofluids in optimizing parabolic trough concentrator performance: A comprehensive review
Sanjeev Kumar GUPTA , Soni KUMARI
DOI: 10.14744/sigma.2026.2022 Pages : 698-719
Abstract Full Text PDF
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