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Catalog Publications
Year 2025
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A Compact Tri-Band Omnidirectional Antenna Design for CubeSat Applications
PublicationThis paper presents a compact tri-band omnidirectional antenna designed for CubeSat applications, operating at UHF (0.755 GHz), L-band (1.25 GHz), and S-band (2.28–3.74 GHz). The antenna features a defected ground structure (DGS) and metallic vias, which enhance impedance matching and enable stable multi-band resonance while maintaining a small footprint of 0.26λ × 0.26λ × 0.013λ within a 1U CubeSat. Unlike conventional CubeSat...
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A comparative analysis of numerically simulated and experimentally measured static responses of a floating dock
PublicationTwo numerical methods, dynamic and static analyses, are proposed to calculate the static responses of a floating dock under different ballast water distributions. Model-scale experimental tests were conducted to compare with these numerical methods. The dynamic analysis includes a 6-degree-of-freedom (6-DOF) model, a hydrostatic force model and a hydrodynamic force model to simulate the dock's freely floating processes. The dock's...
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A Comprehensive System for Protection of Photovoltaic Installations in Normal and Emergency Conditions
PublicationThe rapid growth of the photovoltaic industry necessitates the development of innovative solutions to ensure the safe operation of these systems. One of the most critical challenges in photovoltaic installations is ensuring protection against electric shock under both operational and emergency conditions, as well as minimizing the risk of fire spread in case of an installation fire. Existing safety measures do not provide a sufficient...
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A CONCEPT OF A MICRO-POLYGENERATION SYSTEM FOR ZERO-ENERGY BUILDINGA CONCEPT OF A MICRO-POLYGENERATION SYSTEM FOR ZERO-ENERGY BUILDING
PublicationThis paper presents a concept of a zero-energy system for powering a single-family house based on a PV system, an electrolyser, a hydrogen gas storage, a fuel cell and a heat pump. Estimated is the demand for electricity and thermal energy consumed in a house inhabited by 3 people and a usable area of 80 m2. The investment costs of the installation were estimated based on the commercially available offer.
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A facile synthesis by spark plasma sintering of mobile lithium ions into oxynitride glass-ceramic matrix: Insight and perspective
PublicationThe quest for efficient energy storage solutions has led to the development of solid-state Li-on batteries (SSBs), which utilize solid-state electrolyte (SSE) materials instead of organic liquid electrolytes. This study investigates the effect of increasing Li content in a Ca11Al14Si16O49N10 glass-ceramic material on its structural, thermal, physical, and electrical properties. Spark Plasma Sintered (SPS) glass-ceramic samples...
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A Feasibility Study of Debonding Detection in Multi-Layered Marine Thin-Wall Structures Using a Non-Destructive Vibration-Based Approach
PublicationThis study analyses different debonding defect scenarios on a multi-layered material composed of carbon fibre- reinforced polymer as a composite coating applied to structural steel, with the aim of applying it to marine structures. The study utilises vibration-based experimental non-destructive diagnostics and numerical simulations to thoroughly examine the debonding extent at four different lengths: 0%, 25%, 75%, and 100% of the...
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A Highly Compact Low-Profile Beam Switching Transmitarray Antenna for ISM-Band Applications
PublicationThis paper presents a novel, very low-profile transmitarray antenna (TA) designed specifically for applications in the 24 GHz Industrial, Scientific, and Medical (ISM) band. The design innovation lies in embedding the switchable feed antenna into the beam-focusing surface and adding a reflector, which effectively halves the antenna’s size in the boresight direction. This compact antenna allows for easy beam switching through the...
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A Method for Adapting Stereo Matching Algorithms to Real Environments
PublicationThis study challenges the commonly used testbeds and benchmarks for testing stereo matching algorithms. Although the algorithms listed in the rankings based on these testbeds score exceptionally high, stereo matching technology still suffers from major drawbacks; as such, it is much less popular in commercial use than other technologies for 3D scanning, such as structured-light 3D scanners. One of the main problems is that the...
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A method for estimating the work of cutting forces to improve the efficiency of face milling of large-size workpieces
PublicationThe paper presents a method of vibration reduction during flat surface milling of large-sized details. It involves searching for the best conditions for mounting the workpiece based on the experimental identification of impulsively excited dominant vibration amplitudes, corresponding natural frequencies and phase angles on the selected machined surface. The identification is repeated for a set of tightening torques for the mounting...
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A Miniaturized and High Optically Transparent Frequency Selective Surface for RF Shielding using Double-Glazed Glass Windows for Green Building Applications
PublicationThis research presents a miniaturized and high optically transparent (OT) frequency selective surface (FSS) for achieving RF shielding through glass window panels. The proposed FSS consists of a single-layered copper pattern sandwiched between two ordinary glass substrates to suppress the dual bands of sub-6 fifth generation (5G). In particular, the design effectively shields n65-downlink (2.1 GHz) and a portion of n78-band (3.5...
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A Non-PCM-Based 2 × 2 MIMO Antenna Array With Low Radar Cross-Section Using Characteristic Mode Analysis
PublicationIn this paper, we introduced a 2×2 multiple-input-multiple-output (MIMO) antenna array using a non-polarization conversion metasurface (NPCM) with reduced radar cross section (RCS). To achieve a low RCS, a chess-board configuration is typically adopted. However, in conventional NPCM designs, subarrays with 180◦ phase shifts apart exhibit radiating modes at different resonance frequencies due to varied unit cell sizes and spacing....
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A Probe into the Corrosion Behavior of a WE43B Magnesium Alloy in a Simulated Body Fluid using Dynamic Electrochemical Impedance Spectroscopy
PublicationWE43B is one of the newest Mg alloys with practical application in biomedical implant technology. This work attempts to scrutinize the corrosion characteristics of WE43B alloy in a simulated body fluid (SBF) at a typical body temperature. The dynamic-electrochemical impedance spectroscopy with the capacity to track changes on surfaces in a dynamic corrosive system is used in combination with other classical techniques namely, linear...
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A procedure for simulation-assisted identification of ultrasonic wave attenuation in heterogeneous materials and its application to the detection of fracture in concrete beams
PublicationIn this study, a novel procedure for identification of ultrasonic wave attenuation in heterogeneous materials based on signal energy was presented. The main objective was to develop a method for simple and robust determination of wave characteristics for further use in numerical modelling of ultrasonic wave propagation including attenuation of signals. Experimental investigations supported by numerical simulations were proposed...
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A random field-based simulational identification of possible levels of material imperfections of adhesive-bonded joints
PublicationRecently, structural adhesives have become significant in the shaping of structural elements, especially in thin-walled structures, where they replace or supplement traditional connection methods. However, adhesive-bonded joints are highly susceptible to internal structural imperfections due to their application technique and the nature of the adhesive. These material inconsistencies impact the strength parameters and the mechanical...
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A review on hydrophobic electrospun nanofibers-based materials and membranes for water treatment: Challenges, outlook, and stability
PublicationMembrane technology is well recognized as a dependable means of supplementing the availability of potable water through processes such as water purification and desalination. Electrospun nanofiber membranes have garnered significant attention because of their advantageous features, including a greater specific surface area, increased porosity, reduced thickness, and popularity. Consequently, ENMs have emerged as an up-and-coming...
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A Review: Structural Shape and Stress Control Techniques and their Applications
PublicationThis review article presents prior studies on controlling shape and stress in flexible structures. The study offers a comprehensive survey of literature concerning the adjustment and regulation of shape, stress, or both in structures and emphasizes such control’s importance. The control of systems is classified into three primary classes: nodal movement control, axial force control, and controlling the two classes concurrently....
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A study of Scrum @ S&P Global in the post-COVID-19 era: Unsuitable for remote work or just flawed implementation?
PublicationContext: Although the COVID-19 pandemic is behind us, the seminal challenge for agile teams has not gone away, as “Work-From-Home (WFH) is here to stay”. Despite a wealth of literature documenting the challenges of applying agile methods in remote environments, practical guidance for overcoming these challenges remains limited. Furthermore, systematic meta-guidelines to help practitioners develop tailored, context-specific solutions...
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Acceleration deforms exponential decays into generalized Zipf-Mandelbrot laws
PublicationAn exponentially decaying system looks as if its decay was a generalized power or double-exponential law, provided one takes into account the relativistic time dilation in a detector, the delay of the emitted signal, and the accelerations of both the source and the detector. The same mathematical formula can be found in generalizations of the Zipf-Mandelbrot law in quantitative linguistics and in the dynamics of ligand binding...
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Accuracy, repeatability and time consumption of selected digital measurement methods of roundwood stacks
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Accurate dimensional characterization of the textured inner surface of the bearing bushing by the mean of a new measurement instrument
PublicationThe measurement of dimples created on the inner bushing surface is a key step in the quality assessment of the textured bearings, because of their substantial effect on the bearing performance. The aim of this study was the complex analysis of the surface topography of textured inner bushing surface with application of the newly designed and built instrument for 360 degrees surface topography measurements. In the article the theoretical models...
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Activation of small molecules by ambiphilic NHC-stabilized phosphinoborenium cation: formation of boreniums with B–O–C, B–O–B, and B–O–P structural motifs
PublicationThe reactivity of the phosphinoborenium cation supported by a 1,3,4,5-tetramethylimidazolin-2-ylidene ligand toward small molecules was explored. The phosphinoborenium cation exhibited dual Lewis acid–base properties due to the presence of the Lewis acidic boron center and the Lewis basic phosphido ligand connected by a covalent bond. The reaction of the title cation with CO2 led to the insertion of a CO2 molecule into the P–B...
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Active learning on stacked machine learning techniques for predicting compressive strength of alkali-activated ultra-high-performance concrete
PublicationConventional ultra-high performance concrete (UHPC) has excellent development potential. However, a significant quantity of CO2 is produced throughout the cement-making process, which is in contrary to the current worldwide trend of lowering emissions and conserving energy, thus restricting the further advancement of UHPC. Considering climate change and sustainability concerns, cementless, eco-friendly, alkali-activated UHPC (AA-UHPC)...
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Active Polylactide-poly(ethylene glycol) Films Loaded with Olive Leaf Extract for Food Packaging—Antibacterial Activity, Surface, Thermal and Mechanical Evaluation
PublicationAs the demand for sustainable and innovative solutions in food packaging continues to grow, this study endeavors to introduce a comprehensive exploration of novel active materials. Specifically, we focus on characterizing polylactide-poly(ethylene glycol) (PLA/PEG) films filled with olive leaf extract (OLE; Olea europaea) obtained via solvent evaporation. Examined properties include surface structure, thermal degradation and mechanical...
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Adaptive decision making at the managerial level in a joint venture company - case study
PublicationThe article presents an introduction to the concept of adaptive decision making in a joint venture company based on the available literature on the subject. The article describes comprehensive approach to adaptive way of thinking in the company targeted at adaptive decision making. The publication begins with an indication of managerial role in a joint venture company in the light of current literature...
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Advanced genetic algorithm-based signal processing for multi-degradation detection in steam turbines
PublicationThis research contributes to the field of reliability engineering and system safety by introducing an innovative diagnostic method to enhance the reliability and safety of complex technological systems. Steam turbines are specifically referred to. This study focuses on the integration of advanced signal processing techniques and engineering dynamics in addressing critical issues in the monitoring and maintenance of mechanical systems....
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Advanced Technologies for Nitrogen Removal and Recovery from Municipal and Industrial Wastewater
PublicationNitrogen pollution poses significant environmental challenges, contributing to eutrophication, soil acidification, and greenhouse gas emissions. This study explores advanced methods for nitrogen removal and recovery from municipal and industrial wastewater, with a focus on biological, chemical, and physical processes. Key processes, such as nitrification–denitrification and emerging technologies like shortcut nitrogen pathways,...
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Advances in deep eutectic solvents as extracting media toward heavy metals from natural, processed and commercialized food products
PublicationToday, a new class of green solvents, such as deep eutectic solvents (DESs), have been involved in multiple applications, including extraction of a vast number of biomolecules (phenolics, antioxidants, CO2, etc.) and food contaminants (such as heavy metals). Major attention has been paid to the extraction of heavy metals; however, no report reviewing the progress has been made. Likewise, great advances in extraction and separation...
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Advances in the degradation and recycling of polyurethanes: biodegradation strategies, MALDI applications, and environmental implications
Publicationolyurethanes pose significant environmental challenges due to their limited recyclability and slow biodegra- dation. This review highlights recent advancements in polyurethanes degradation and recycling, with a partic- ular focus on the application of Matrix-Assisted Laser Desorption/Ionization techniques. This methods have made significant progress in analyzing environmental contamination by polyurethanes, offering a detailed...
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Advancing Manufacturing Intelligence: Decisional DNA-Based Methodology for Semi-automatic Manufacturing Environment
PublicationThe paper presents a novel smart information system tailored for semi-automatic manufacturing environments, utilizing Decisional DNA (DDNA) and the Set of Experience Knowledge Structure (SOEKS). The pre sented methodology addresses key challenges of semi-automatic settings such as predictive maintenance, data inconsistency, and optimization of human machine interaction. The methodology involves real-time data collection through...
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Agile Mindset, Technological vs. Non-technological Mindset, and Gender. Are They Related?
PublicationThis study examined the impact of gender on the relationship between employees' agile and non-agile mindsets and organisational agility. It also considers the tech and non-tech focus as a potential moderator. The initial sample of 209 knowledge workers andthe replication sampleof 401 knowledge workers were applied to analyse the above relations using OLS regression by SPSS PROCES. The results showed that the most critical factor...
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AI-Driven Humanoidoid Personnel Acquisition: Is A Game Changer
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AI-Driven Sustainability in Agriculture and Farming
PublicationIn this chapter, we discuss the role of artificial intelligence (AI) in promoting sustainable agriculture and farming. Three main themes run through the chapter. First, we review the state of the art of smart farming and explore the transformative impact of AI on modern agricultural practices, focusing on its contribution to sustainability. With this in mind, our analysis focuses on topics such as data collection and storage, AI...
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Algerian Researchers' Attitudes Towards Employing Artificial Intelligence Applications in Scientific Research: A Survey Study on a Sample of Algerian Researchers
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Alternative approach for damping coefficient estimation in instrumented first-mode dominant steel frame buildings
PublicationAn alternative approach geared towards estimating damping coefficients in steel frame buildings is presented and assessed. The proposed methodology is conceptually intuitive and its implementation is straightforward. It arises from fundamental principles of structural dynamics and utilizes actual seismic recordings from instrumented buildings. The presented approach is most suitable for low- and mid-rise shear-type structures,...
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An 8–18 GHz ultrawideband gap waveguide folded bandpass filter for radar applications
PublicationThe present work introduces a compact ultrawideband filter based on folded ridge gap waveguide. The design and fabrication of a ninth-order bandpass filter demonstrates its capabilities, achieving a 75 % fractional bandwidth, a return loss (RL) of 17.6 dB, and an insertion loss (IL) of 0.52 dB within the 8.22 to 18.15 GHz frequency range. The fabricated prototype shows excellent agreement between simulations and measurements. The...
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An All-Metal Broadband Low SLL slot array antenna for use in 5G Sub-6 GHz networks
PublicationThis paper describes the design and implementation of an all-metal wideband cavity-backed slot array antenna specifically optimized for 5G sub-6GHz networks. The antenna is engineered to feature low sidelobe levels (SLL), which enhance signal clarity and reduce interference. The proposed antenna utilizes a novel approach, directly exciting all radiating slots through the cavity layer, thus eliminating the need for a complex and...
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An analogue of the Pöschl–Teller anharmonic oscillator on an N-dimensional sphere
PublicationA Schr{\"o}dinger particle on an $N$-dimensional ($N\geqslant2$) hypersphere of radius $R$ is considered. The particle is subjected to the action of a force characterized by the potential $V(\theta)=2m\omega_{1}^{2}R^{2}\tan^{2}(\theta/2) +2m\omega_{2}^{2}R^{2}\cot^{2}(\theta/2)$, where $0\leqslant\theta\leqslant\pi$ is the hyperlatitude angular coordinate. In the general case when $\omega_{1}\neq\omega_{2}$, this is a model of...
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An Evaluation of the Energy Potential of Agri-Food Waste: Green Residues from Tomato (Solanum lycopersicum L.) and Shea Nutshells (Vitellaria paradoxa)
PublicationAddressing the agricultural challenges of agri-food waste accumulation, this study assessed the energy potential of green residues from tomato (Solanum lycopersicum L. cv. Kmicic) plants in different fertilizer configurations and Shea nutshell (Vitellaria paradoxa) waste. Two key parameters were compared: (I) Calorific Value (CV), representing thermal treatment, and (II) Biogas and Biomethane production potential, representing...
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An experimental EEG study of brain activities underlying the Autonomous Sensory Meridian Response
PublicationAutonomous Sensory Meridian Response (ASMR) is an audio-visual phenomenon that has recently become popular. Many people have reported experiencing a tingling-like sensation through their body while watching audio/video clips known as ASMR clips. People capable of having such experiences have also reported improved overall well-being and feeling relaxed. However, the neural activity underlying this phenomenon is not yet well-studied....
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An introduction to agile leadership in theory and practice - case study
PublicationThe article presents an introduction to the concept of agile leadership based on the available literature on the subject. The article describes comprehensive agile leadership competencies that can be used in project practice. The publication begins with an indication of leadership in the light of current literature on the subject, an explanation of the characteristics of leadership and agile management...
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An objective isogeometric mixed finite element formulation for nonlinear elastodynamic beams with incompatible warping strains
PublicationWe present a stable mixed isogeometric finite element formulation for geometrically and materially nonlinear beams in transient elastodynamics, where a Cosserat beam formulation with extensible directors is used. The extensible directors yield a linear configuration space incorporating constant in-plane cross-sectional strains. Higher-order (incompatible) strains are introduced to correct stiffness, whose additional degrees of...
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An optimal nonlinear fractional order controller for passive/active base isolation building equipped with friction-tuned mass dampers
PublicationThis paper presents an optimal nonlinear fractional-order controller (ONFOC) designed to reduce the seismic responses of tall buildings equipped with a base-isolation (BI) system and friction-tuned mass dampers (FTMDs). The parameters for the BI and FTMD systems, as well as their combinations (BI-FTMD and active BI-FTMD or ABI-FTMD), were optimized separately using a multi-objective quantum-inspired seagull optimization algorithm...
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An ultrawideband monopulse feed with slant polarization for tracking radar systems
PublicationAn ultrawideband slant-polarized monopulse feed is designed and fabricated for microwave applications. The proposed configuration features four end-launched diagonal horns allowing for the production of sum and difference channels in two principal planes. The key advantage of this proposed monopulse antenna over traditional monopulse feeds is its ability to combine the benefits of ultrawideband performance with slant polarization...
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Analiza wykorzystania instalacji fotowoltaicznych z magazynem energii do zasilania oświetlenia węzła drogowego cz.1
PublicationOpracowanie przedstawia możliwość zastosowania technologii opartych na ogniwach fotowoltaicznych wspartych magazynem energii, które mogą posłużyć do zasilania energią elektryczną elementów infrastruktury drogowej. Analiza przeprowadzona została dla istniejącego węzła drogowego, którego odbiorem energii elektrycznej jest instalacja oświetlenia drogowego. Autor scharakteryzował obiekt, określił parametry...
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Analiza zużycia pierścieni prowadzących separatory przedmiotowe docierarki do powierzchni płaskich
PublicationW artykule przedstawiono problematykę zużycia pierścieni prowadzących separatory przedmiotowe standardowych docierarek jednotarczowych do obróbki powierzchni płaskich. Omówiono sposób analizy z wykorzystaniem sztucznych baz pomiarowych oraz wyniki badań wpływu prędkości obrotowej pierścieni na ich zużycie. Analizowano również kinematykę układu wykonawczego docierarki oraz pobór mocy silnika napędu głównego obrabiarki. Otrzymane...
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Analysis of "green methanol" production from carbon dioxide acquired from negative emission power plants using CFD approach for catalytic reactor
PublicationThe growing global demand for energy, coupled with the urgent need to reduce carbon dioxide (CO₂) emissions, has led to the development of innovative energy cycles such as the negative CO₂ gas power plant (nCO2PP). Carbon dioxide storage and reuse in current industries is therefore becoming an important issue. The answer to this is the process of synthesizing methanol, commonly used in many industries from captured carbon dioxide...
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Analysis of heat transfer and AuNPs-mediated photo-thermal inactivation of E. coli at varying laser powers using single-phase CFD modeling
PublicationPurpose In the wake of the COVID-19 pandemics, the demand for innovative and effective methods of bacterial inactivation has become a critical area of research, providing the impetus for this study. The purpose of this research is to analyze the AuNPs-mediated photothermal inactivation of E. coli. Gold nanoparticles irradiated by laser represent a promising technique for combating bacterial infection that combines high-tech and...
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Analysis of Instantaneous Ship Resistance-Increase in Waves with CFD URANS
PublicationTo comply with the requirements set out by the International Maritime Organization (IMO) for reducing greenhouse gas (GHG) emissions, recent efforts have focused on investigating the parameters that affect the increase in ship resistance, with the aim of developing effective reduction methods. This research examines both the time-varying instantaneous characteristics of a ship’s resistance in waves, referred to as resistance-increase,...
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Analysis of the correlation between instantaneous resistance-increase in waves and ship motion for reducing fuel consumption
PublicationReducing fuel consumption is crucial for greening water transport. Wind, waves and currents affect fuel usage, with wave-induced resistance being significant. Typically, added resistance is estimated as the time average of resistance increase in waves over calm water. However, this average lacks real-time utility for engine adjustments. This study analyses time-series correlations between wave-induced resistance-increase and ship...
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Analysis of the Possibility of Using 3D Printing for Emergency Replacement of Damaged Elements in the Marine Industry
PublicationThis study aims to evaluate the feasibility of using Fused Deposition Modeling (FDM)/Fused Filament Fabrication (FFF) 3D printing for the emergency replacement of damaged components in the marine industry, focusing on mechanical properties, dynamic stiffness, and manufacturing efficiency. The authors’ research interests include the application of incremental and hybrid methods for the production of new, fully functional parts that...