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Technologies, Volume 13, Issue 7

July 2025 - 50 articles

Cover Story: Model order reduction is crucial for efficiently simulating large-scale RLCk models extracted from modern integrated circuits. This article introduces a frequency-aware multi-point MM (MPMM) method that adaptively constructs a rational Krylov subspace guided solely by the reduced-order model (ROM) transfer function. Through local and global convergence criteria, automatic expansion point selection, and efficient implementation techniques, MPMM avoids unnecessary computations, ensures accuracy across the desired frequency range, and exhibits excellent performance even in complex large-scale models. Compared to existing approaches, MPMM produces significantly smaller and more accurate ROMs with lower runtimes and memory demands. These advantages establish MPMM as a strong candidate for integration into industrial parasitic extraction tools. View this paper
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Articles (50)

  • Review
  • Open Access
6,327 Views
38 Pages

Review of Masked Face Recognition Based on Deep Learning

  • Bilal Saoud,
  • Abdul Hakim H. M. Mohamed,
  • Ibraheem Shayea,
  • Ayman A. El-Saleh and
  • Abdulaziz Alashbi

With the widespread adoption of face masks due to global health crises and heightened security concerns, traditional face recognition systems have struggled to maintain accuracy, prompting significant research into masked face recognition (MFR). Alth...

  • Article
  • Open Access
960 Views
21 Pages

Monitoring Peripheral Oxygen Saturation (SpO2) is an important vital sign both in Intensive Care Units (ICUs), during surgery and convalescence, and as part of remote medical consultations after of the COVID-19 pandemic. This has made the development...

  • Article
  • Open Access
686 Views
20 Pages

Modeling and Efficiency Analysis of an Immersed Heat Exchanger for Solar-Powered Industrial Heat Processes: A Case Study on Wool Washing

  • Messaoud Hazmoune,
  • Mohammed Debbache,
  • Mohammed Gmal Osman,
  • Benaoumeur Aour,
  • Cornel Panait,
  • Mohammed Laissaoui and
  • Gheorghe Lazaroiu

Efficient water heating is essential for wool-washing processes, which demand temperatures above 70 °C. To meet this requirement sustainably, a parabolic trough solar concentrator system is proposed in this paper as an alternative to conventional...

  • Article
  • Open Access
627 Views
19 Pages

With the advancement of modern engineering structures, traditional cement concrete is increasingly unable to meet the mechanical performance requirements under complex conditions. To overcome the performance limitations of materials, modified concret...

  • Article
  • Open Access
1,986 Views
49 Pages

A Design-Based Research Approach to Streamline the Integration of High-Tech Assistive Technologies in Speech and Language Therapy

  • Anna Lekova,
  • Paulina Tsvetkova,
  • Anna Andreeva,
  • Georgi Dimitrov,
  • Tanio Tanev,
  • Miglena Simonska,
  • Tsvetelin Stefanov,
  • Vaska Stancheva-Popkostadinova,
  • Gergana Padareva and
  • Katia Rasheva
  • + 2 authors

Currently, high-tech assistive technologies (ATs), particularly Socially Assistive Robots (SARs), virtual reality (VR) and conversational AI (ConvAI), are considered very useful in supporting professionals in Speech and Language Therapy (SLT) for chi...

  • Article
  • Open Access
4 Citations
2,439 Views
27 Pages

SWOT-AHP Analysis of the Importance and Adoption of Pumped-Storage Hydropower

  • Mladen Bošnjaković,
  • Nataša Veljić,
  • Jelena Topić Božič and
  • Simon Muhič

Energy storage technologies are becoming increasingly important when it comes to maintaining the balance between electricity generation and consumption, especially with the increasing share of variable renewable energy sources (VRES). Pumped storage...

  • Article
  • Open Access
1 Citations
564 Views
19 Pages

Innovative Investigation of the Influence of a Variable Load on Unbalance Fault Diagnosis Technologies

  • Amir R. Askari,
  • Len Gelman,
  • Daryl Hickey,
  • Russell King,
  • Mehdi Behzad and
  • Panchanand Jha

This paper focuses on the influence of torsional loading on the vibration-based unbalance fault diagnosis technology under variable-speed conditions. The coupled flexural–torsional nonstationary governing equations of motion are obtained and so...

  • Article
  • Open Access
3,111 Views
20 Pages

Steam Distillation of Citrus Waste Extract for Antimicrobial Metal Nanoparticle Synthesis

  • Javier Emanuel Castañeda-Aude,
  • Enrique Díaz Barriga-Castro,
  • Lizbeth Liliana Díaz-Muñoz,
  • Javier Alberto Garza-Cervantes,
  • José Rodríguez-Mirasol,
  • José Rubén Morones-Ramírez,
  • Héctor Javier Amézquita-García,
  • David Alejandro De Haro-Del Río,
  • Angel León-Buitimea and
  • Noe Macias-Segura
  • + 1 author

This research presents a novel, sustainable, and eco-friendly method for the rapid green synthesis of nanoparticles with antibacterial properties. This method employs steam distillation to extract reducing and stabilizing agents from orange peel wast...

  • Article
  • Open Access
2,312 Views
22 Pages

Developing a Concept for an OPC UA Standard to Improve Interoperability in Battery Cell Production: A Methodological Approach for Standardization in Heterogeneous Production Environments

  • Julia Sawodny,
  • Simon Otte,
  • Fabian Böttinger,
  • Fabian Haag,
  • Andreas Schlereth,
  • Tom-Hendrik Hülsmann,
  • Felix Tidde,
  • David Roth,
  • Arno Schmetz and
  • Alexander Puchta
  • + 3 authors

The development of interoperable and reusable information models is a key challenge for digitalization in manufacturing domains with heterogeneous and complex process chains. Ensuring seamless data exchange requires the standardization of both data s...

  • Article
  • Open Access
1 Citations
706 Views
19 Pages

Improving CMTS Physical Properties Through Potassium Doping for Enhanced Rhodamine B Degradation

  • Amira Bouali,
  • Olfa Kamoun,
  • Moez Hajji,
  • Ileana Nicoleta Popescu,
  • Ruxandra Vidu and
  • Najoua Turki Kamoun

This study investigated the enhancement of Cu2MnSnS4 (CMTS) thin films’ photocatalytic properties through potassium (K) doping for rhodamine B degradation under visible light. K-doped CMTS films synthesized using spray pyrolysis technology achi...

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Technologies - ISSN 2227-7080