Volume: 44, Issue: 1 (50 Articles)
Research Article
Title: Enhancing sound quality through audio beam formation: A MVDR algorithm approach with linear microphone arrays
Authors: 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
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:1-10
DOI: 10.14744/sigma.2026.1957
Viewed: (51) times
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Research Article
Title: Intelligent fruit sorter for quality evaluation of guava fruit using image analysis
Authors: Tejas G. PATIL, Sanjay P. SHEKHAWAT , Lalit K. TOKE, Lalit N. PATIL, Atul A. PATIL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:11-22
DOI: 10.14744/sigma.2026.1964
Viewed: (42) times
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Research Article
Title: Classifications of artificial intelligence trading systems by using WASPAS approach based on picture fuzzy soft aggregation operators
Authors: Tahir MAHMOOD, Jabbar AHMMAD
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:23-41
DOI: 10.14744/sigma.2026.1965
Viewed: (35) times
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Research Article
Title: Commiphora myrrha-functionalized bacterial cellulose as a potential wound healing biomaterial
Authors: Seda GENÇ ŞİMŞEK, Cenk DENKTAŞ, Nelisa TÜRKOĞLU
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:42-54
DOI: 10.14744/sigma.2026.1966
Viewed: (41) times
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Research Article
Title: Clustering business news for strategic insight: An unsupervised learning approach
Authors: Gaurav V. DAHAKE, M. S. ALI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:55-73
DOI: 10.14744/sigma.2026.1967
Viewed: (39) times
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Research Article
Title: Audio fingerprinting for song identification using discrete wavelet transform
Authors: Swati Mukesh DIXIT, Daulappa Guranna BHALKE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:74-82
DOI: 10.14744/sigma.2026.1968
Viewed: (28) times
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Research Article
Title: The effect of eccentricity and asymmetry in the plan on the performance level in existing steel buildings with a medium bending frame
Authors: Kaveh NEZAMISAVOJBALAGHI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:83-92
DOI: 10.14744/sigma.2026.1969
Viewed: (27) times
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Research Article
Title: Multiclass anemia classification based on multivariate adaptive regression spline method: Developing a decision support system for doctors
Authors: Nagihan YAĞMUR, Idiris DAĞ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:93-104
DOI: 10.14744/sigma.2025.1970
Viewed: (37) times
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Research Article
Title: Properties of N, acetylamide-rich biopolymers from five different aquatic invertebrates
Authors: Oluwashina Philips GBENEBOR, Abimbola Patricia POPOOLA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:105-114
DOI: 10.14744/sigma.2026.1971
Viewed: (26) times
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Research Article
Title: Study of improved quantum particle swarm optimization for modeling of wasted surgical mask
Authors: Subhojit CHATTARAJ, Sk Tanbir ISLAM, Pijush DUTTA, Mahuya DAS
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:115-126
DOI: 10.14744/sigma.2026.1972
Viewed: (22) times
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Research Article
Title: Metaheuristic and cryptographic approaches with upgraded discrete and lifting wavelet transform for effective data security in steganography
Authors: S. SARATHA, V. MURUGAN, P. Arockia Jansi RANI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:127-139
DOI: 10.14744/sigma.2026.1973
Viewed: (34) times
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Research Article
Title: Metaheuristic algorithms for multi objective vehicle routing problem
Authors: İlknur TÜKENMEZ, Onur KAYA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:140-152
DOI: 10.14744/sigma.2026.1974
Viewed: (35) times
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Research Article
Title: Electricity energy consumption forecasting using LSTM and NAR
Authors: Parastou BEHGOUY , Abbas UĞURENVER
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:153-161
DOI: 10.14744/sigma.2025.00056
Viewed: (38) times
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Research Article
Title: Screening of Trichoderma spp. for biofertilizer and biocontrol potential in vitro
Authors: Kemal KARACA, Rengin ELTEM
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:162-173
DOI: 10.14744/sigma.2026.1975
Viewed: (38) times
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Research Article
Title: Structural, thermal, morphological, and rheological properties of yeast extracts obtained from Saccharomyces cerevisiae, Saccharomyces boulardii, and Kluyveromyces marxianus
Authors: Furkan DEMİRGÜL, Ömer ŞİMŞEK, Enes DERTLİ, Osman SAĞDIÇ
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:174-183
DOI: 10.14744/sigma.2026.1976
Viewed: (37) times
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Research Article
Title: Technological developments and sustainable construction in Iraqi architecture
Authors: Osamah A AL-TAMEEMI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:184-199
DOI: 10.14744/sigma.2026.1977
Viewed: (38) times
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Research Article
Title: Evaluation of the effects of sustainable development goals on improvement of air quality in cities
Authors: Şahin KORKMAZ, Damla MUSTAFAOĞLU, Zeynep CEYLAN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:200-209
DOI: 10.14744/sigma.2025.00093
Viewed: (25) times
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Research Article
Title: An innovative group decision-making approach utilizing picture fuzzy hypersoft expert set
Authors: Muhammad IHSAN, Muhammad SAEED, Muhammad Yasir HAYAT MALIK
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:210-221
DOI: 10.14744/sigma.2026.1978
Viewed: (35) times
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Research Article
Title: Investigation of civil engineering students’ general disaster preparedness beliefs
Authors: Esra Zehra BİÇER ÖZDEMİR, Özlenur CESUR AKIN, Egemen ÜNAL, Salih MOLLAHALİLOĞLU
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:222-233
DOI: 10.14744/sigma.2026.1979
Viewed: (43) times
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Research Article
Title: Impact of halloysite clay on the thermal degradation behaviour, kinetics analysis, and pyrolysis product distribution during catalytic pyrolysis of bakelite
Authors: Chinmaya KAR, Achyut KUMAR PANDA, Pabitra MOHAN MAHAPATRA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:234-251
DOI: 10.14744/sigma.2026.1980
Viewed: (26) times
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Research Article
Title: Simultaneous electricity generation and removal of Sars-Cov-2 from wastewater in microbial fuel cells
Authors: Sıla ARSLAN, Tunç ÇATAL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:252-261
DOI: 10.14744/sigma.2026.1981
Viewed: (24) times
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Research Article
Title: An exact analysis of chemical reaction and porosity effects for mixed convective magnetohydrodynamics Casson fluid
Authors: Nur Fatihah MOD OMAR, Zulkhibri ISMAIL, Rahimah JUSOH, Muhammad Azrin AHMAD, Ahmad Qushairi MOHAMAD
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:262-272
DOI: 10.14744/sigma.2025.00060
Viewed: (32) times
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Research Article
Title: Image segmentation for semi-supervised fuzzy clustering with KL-divergence using Kernel method
Authors: Muthulakshmi K, Jayalakshmi M
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:273-291
DOI: 10.14744/sigma.2026.1982
Viewed: (31) times
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Research Article
Title: Optimization of precision machine part manufacturing by integration of Grey-Taguchi method with principal component analysis
Authors: Kübra EROL, Selda KAPAN ULUSOY, Ercan ŞENYİĞİT
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:292-308
DOI: 10.14744/sigma.2025.00101
Viewed: (25) times
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Research Article
Title: Improved error limits for numerical integration via some perturbed trapezoidal inequalities
Authors: Duygu DÖNMEZ DEMİR, Gülsüm ŞANAL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:309-317
DOI: 10.14744/sigma.2026.1983
Viewed: (41) times
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Research Article
Title: Hall current’s effect on MHD boundary layer compressible flow of fluid past a stretching sheet with viscous dissipation
Authors: Bandita DAS, Sunmoni MUDOI, Dipak SARMA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:318-328
DOI: 10.14744/sigma.2026.1984
Viewed: (32) times
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Research Article
Title: Classification of cluster analysis techniques by using hesitant bipolar complex fuzzy multi-attribute decision-making approach based on dombi prioritized aggregation operators
Authors: Hafiz Muhammad WAQAS, Tahir MAHMOOD, Ubaid ur REHMAN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:329-350
DOI: 10.14744/sigma.2026.1985
Viewed: (40) times
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Research Article
Title: Harnessing AI for real-time detection and mitigation of technostress in digital epoch
Authors: Rachana PARIKH, Vishal DAHIYA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:351-359
DOI: 10.14744/sigma.2026.1986
Viewed: (25) times
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Research Article
Title: Semantic algorithm for land segmentation and building recognition to protect the Egyptian cultıvated land based on u-NET and CNN
Authors: Mahmoud ROKAYA, Majed ALWATEER
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:360-374
DOI: 10.14744/sigma.2026.1987
Viewed: (37) times
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Research Article
Title: Computational fracture analysis of 3Y-TZP dental ceramics with low Al2O3 using peridynamics
Authors: Alireza MORADKHANI, Mohammad HOSEINPOUR GOLLO
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:375-387
DOI: 10.14744/sigma.2025.1922
Viewed: (27) times
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Research Article
Title: Enhancing bidirectional gated recurrent unit with activation mechanism for anomaly classification for network security
Authors: N. Senthil MADAMSAMY, A. Noble Mary JULIET, P. Boopathi RAJAN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:388-403
DOI: 10.14744/sigma.2026.1988
Viewed: (38) times
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Research Article
Title: Predicting survival rates of patients with cardiovascular diseases using ensemble techniques
Authors: Bharati KARARE, Anushree Anand PANDE, Pratibha WAGHALE, Amruta Tapas PAUL, Chanchla TRIPATHI, Lalit DAMAHE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:404-422
DOI: 10.14744/sigma.2026.1989
Viewed: (34) times
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Research Article
Title: Development of plant extract-loaded electrospun nanofiber for the prevention of biofilm-associated infections
Authors: Sevim Feyza ERDOĞMUŞ, Cengiz SARIKURKCU
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:423-438
DOI: 10.14744/sigma.2026.1990
Viewed: (39) times
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Research Article
Title: Electric bus preference with analytical hierarchy process and grey relational analysis combination in public transportation considering modern trend criteria: Kayseri, Türkiye case study
Authors: Aslan İNAN, Huzeyfe KARA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:439-452
DOI: 10.14744/sigma.2024.00158
Viewed: (36) times
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Research Article
Title: Vibration-based fault detection in induced draft fans using unsupervised machine learning approaches
Authors: Ramesh BHANDARE, Pankaj BELDAR, Shyam MOGAL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:453-464
DOI: 10.14744/sigma.2026.1991
Viewed: (43) times
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Research Article
Title: Formation and analysis of thermal images for infrared radiations from top of the atmosphere
Authors: Usama Ayub YOUSUFZAI, Mohammad Jawed IQBAL, Faisal AFRIDI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:465-477
DOI: 10.14744/sigma.2026.1992
Viewed: (78) times
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Research Article
Title: Unmasking sarcasm to understand depression: A machine learning exploration using news headlines
Authors: Vanita Ganesh KSHIRSAGAR, Sunil Kumar YADAV, Nikhil KARANDE
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:478-489
DOI: 10.14744/sigma.2026.1993
Viewed: (66) times
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Research Article
Title: Influence diagnostic in beta ridge regression model: Simulation and application
Authors: Javaria Ahmad KHAN, Atif AKBAR, B M Golam KIBRIA
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:490-500
DOI: 10.14744/sigma.2026.1994
Viewed: (58) times
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Research Article
Title: Comparative assessment of novel hooped and conventional Pelton wheel turbine runner using downcomer nozzles of different materials and exit diameter through experimental investigations
Authors: H. N. LAKDAWALA, V. K. PATEL, G. C. CHAUDHARI, S. A. CHANNIWALA, T. R. PATEL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:501-527
DOI: 10.14744/sigma.2026.1995
Viewed: (53) times
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Research Article
Title: Metaheuristic-based machine learning models for accurate battery remaining useful life prediction in renewable energy storage system
Authors: Shravani GANDHI, Ashlesha CHOPANE, Anushka PARKHI, Sakshi DESHMUKH, Smita KULKARNI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:528-544
DOI: 10.14744/sigma.2026.1996
Viewed: (65) times
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Research Article
Title: SWARA & EDAS integration using spherical fuzzy sets in agricultural field
Authors: Betül KARA, Muhammed Zakir DENİZ, Umut AYDIN, Melis Almula KARADAYI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:545-558
DOI: 10.14744/sigma.2026.1997
Viewed: (60) times
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Research Article
Title: Mechanical vibration-assisted enhancement of weldment mechanical properties
Authors: Japhia Sudarsan NALLA, Basanta Kumar PALAI, P. Govinda RAO
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:559-574
DOI: 10.14744/sigma.2025.00059
Viewed: (75) times
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Research Article
Title: Molecular dockings of secondary metabolites to evaluate anthelmintic potential
Authors: Dilara KARAMAN, Oya GİRİŞGİN, Ahmet Onur GİRİŞGİN
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:575-591
DOI: 10.14744/sigma.2026.1998
Viewed: (62) times
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Research Article
Title: Analysis of efficient solar operated air cooling system for cold storage warehouses
Authors: Prakash P. THOMBARE, Ravindra D. PATIL
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:592-604
DOI: 10.14744/sigma.2026.1999
Viewed: (73) times
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Review Article
Title: Artificial intelligence, machine learning, and deep learning applications in the engineering fields – A comprehensive review
Authors: Haneen DARWISH, Walaa DARWISH, Hiba DARWISH, Abdallah DARWISH, Issa W. ALHMOUD, Osamah ALSHRAIDEH, Ahmad ALZUBAIDI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:605-636
DOI: 10.14744/sigma.2024.00126
Viewed: (83) times
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Review Article
Title: A comprehensive review on traditional and cutting-edge approaches for wind speed/power forecasting
Authors: Muskaan AHUJA, Sanju SAINI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:637-662
DOI: 10.14744/sigma.2026.2000
Viewed: (140) times
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Review Article
Title: A review of photovoltaic plants and battery energy storage systems in terms of power systems stability
Authors: Bora ÇAVDAR, Eda KARACA, Hatice OKUMUŞ, Fatih Mehmet NUROĞLU
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:663-679
DOI: 10.14744/sigma.2025.00093
Viewed: (112) times
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Review Article
Title: An overview of optimum calcination parameters for improved pozzolanic activity in biomass ash
Authors: Manoj Ashok SADAFALE, Mangesh Vasant MADURWAR
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:680-697
DOI: 10.14744/sigma.2026.2001
Viewed: (136) times
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Review Article
Title: The role of hybrid nanofluids in optimizing parabolic trough concentrator performance: A comprehensive review
Authors: Sanjeev Kumar GUPTA, Soni KUMARI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:698-719
DOI: 10.14744/sigma.2026.2022
Viewed: (172) times
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Review Article
Title: Advancements in thermal management of polymer composites and sandwich structures: Insights and innovations
Authors: Sandip K. KADU, Palash SONI
Journal: Sigma Journal of Engineering and Natural Sciences
Issue: Name: February, Year: 2026, Volume: 44, Issue: 1, (FEB 2026), pp:720-746
DOI: 10.14744/sigma.2026.2003
Viewed: (320) times
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