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Technologies, Volume 13, Issue 5

May 2025 - 45 articles

Cover Story: This paper presents an extension of the multipoint flux approximation method (MPFA-O) for simulating saturation front movement through porous media with anisotropic permeability on non-K-orthogonal grids. We address the well-known stability challenges associated with high anisotropy, providing a reliable tool for applications such as CO2 and hydrogen storage, geothermal energy, and hydrocarbon recovery. Apart from the inclusion of a local rotation transformation that suppresses spurious oscillations while preserving monotonicity and local conservation, this paper also introduces a straightforward, MPFA framework-friendly method for implementing flow field estimation. View this paper
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Articles (45)

  • Review
  • Open Access
2 Citations
2,829 Views
33 Pages

Recent Advances in Spatially Incoherent Coded Aperture Imaging Technologies

  • Vipin Tiwari,
  • Shivasubramanian Gopinath,
  • Tauno Kahro,
  • Francis Gracy Arockiaraj,
  • Agnes Pristy Ignatius Xavier,
  • Narmada Joshi,
  • Kaupo Kukli,
  • Aile Tamm,
  • Saulius Juodkazis and
  • Joseph Rosen
  • + 1 author

Coded aperture imaging (CAI) is a powerful imaging technology that has rapidly developed during the past decade. CAI technology and its integration with incoherent holography have led to the development of several cutting-edge imaging tools, devices,...

  • Article
  • Open Access
4 Citations
1,707 Views
25 Pages

This study presents a comparative analysis of four topic modeling techniques —Latent Dirichlet Allocation (LDA), Bidirectional Encoder Representations from Transformers (BERT), Probabilistic Latent Semantic Analysis (pLSA), and Non-negative Mat...

  • Article
  • Open Access
2 Citations
1,598 Views
18 Pages

In this study, we propose a model that integrates a near-field communication (NFC) coupler and a wireless power transfer (WPT) coupler for mobile device applications. The NFC and WPT couplers were independently designed and then combined into a four-...

  • Article
  • Open Access
1 Citations
1,676 Views
15 Pages

Inkjet-Printed Flexible Piezoelectric Sensor for Large Deformation Applications

  • Giulia Mecca,
  • Roberto Bernasconi,
  • Valentina Zega,
  • Raffaella Suriano,
  • Marco Menegazzo,
  • Gianlorenzo Bussetti,
  • Alberto Corigliano and
  • Luca Magagnin

Next-generation flexible, soft, and stretchable sensors and electronic devices are conquering the technological scene due to their extremely innovative applications. Especially when produced via innovative technologies like additive manufacturing (AM...

  • Review
  • Open Access
2 Citations
4,758 Views
25 Pages

ChatGPT as a Digital Tool in the Transformation of Digital Teaching Competence: A Systematic Review

  • José Fernández Cerero,
  • Marta Montenegro Rueda,
  • Pedro Román Graván and
  • José María Fernández Batanero

In recent years, the use of tools based on artificial intelligence, such as ChatGPT, has begun to play a relevant role in education, particularly in the development of teachers’ digital competence. However, its impact and the implications of it...

  • Systematic Review
  • Open Access
4,814 Views
34 Pages

Advances in Mounting Structures for Photovoltaic Systems: Sustainable Materials and Efficient Design

  • Luis Angel Iturralde Carrera,
  • Leonel Díaz-Tato,
  • Carlos D. Constantino-Robles,
  • Margarita G. Garcia-Barajas,
  • Araceli Zapatero-Gutiérrez,
  • José M. Álvarez-Alvarado and
  • Juvenal Rodríguez-Reséndiz

This article addresses the technical, aesthetic, and strategic problem of the limited attention paid to design and selection of materials in photovoltaic system (PSS) support structures despite their direct impact on the efficiency, durability and ec...

  • Article
  • Open Access
1 Citations
1,061 Views
23 Pages

Biodiesel Isomerization Using Sulfated Tin(IV) Oxide as a Superacid Catalyst to Improve Cold Flow Properties

  • Yano Surya Pradana,
  • I Gusti Bagus Ngurah Makertihartha,
  • Tirto Prakoso,
  • Tatang Hernas Soerawidjaja and
  • Antonius Indarto

The development of alternative energies has become a concern for all countries to ensure domestic energy supply and provide environmental friendliness. One of the providential alternative energies is biodiesel. Biodiesel, commonly stated as fatty aci...

  • Review
  • Open Access
2 Citations
9,862 Views
53 Pages

A Comprehensive Review of Adversarial Attacks and Defense Strategies in Deep Neural Networks

  • Abdulruhman Abomakhelb,
  • Kamarularifin Abd Jalil,
  • Alya Geogiana Buja,
  • Abdulraqeb Alhammadi and
  • Abdulmajeed M. Alenezi

Artificial Intelligence (AI) security research is promising and highly valuable in the current decade. In particular, deep neural network (DNN) security is receiving increased attention. Although DNNs have recently emerged as a prominent tool for add...

  • Article
  • Open Access
1,432 Views
32 Pages

Cardiovascular disease (CVD) remains one of the leading causes of mortality worldwide, demanding accurate and timely prediction methods. Recent advancements in artificial intelligence have shown promise in enhancing clinical decision-making for CVD d...

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Technologies - ISSN 2227-7080