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Search results for: ISOGEOMETRIC ANALYSIS
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APPLICATION OF VORTEX FLOW MODEL IN PROPELLER-STATOR SYSTEM DESIGN AND ANALYSIS
PublicationThe paper covers basics of the vortex model used for propeller-stator systems. The outline of the design algorithm is given and the results of its application are shown. The designed propeller-stator system was the subject of model tests run at the CTO model basin and cavitation tunnel. Stator’s influence on the delivered power required by the propeller and its revolution rate has been examined by conducting self-propulsion...
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Analysis of Vibration and Acoustic Signals for Noncontact Measurement of Engine Rotation Speed
PublicationThe non-contact measurement of engine speed can be realized by analyzing engine vibration frequency. However, the vibration signal is distorted by harmonics and noise in the measurement. This paper presents a novel method for the measurement of engine rotation speed by using the cross-correlation of vibration and acoustic signals. This method can enhance the same frequency components in engine vibration and acoustic signal. After...
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Knowledge management approaches of small and medium-sized firms: a cluster analysis
PublicationPurpose This paper aims to categorise the approaches to knowledge management (KM) by companies. In the literature, there is no consensus on a universal or “best” approach to KM. Especially, this paper singles out and discusses the variegated features that characterise the implementation of KM by small- and medium-sized enterprises (SMEs) having different characteristics. Design/methodology/approach A cluster analysis was used...
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Current issues of functional safety and cybersecurity analysis of the industrial and critical infrastructures
PublicationThis article addresses some functional safety assessment procedures with cybersecurity aspects in critical industrial installations with regard to the functional safety requirements specified in standards IEC 61508 and IEC 61511. The functional safety management includes hazard identification, risk analysis and assessment, specification of overall safety requirements and definition of safety functions. Based on the risk assessment...
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INTEGRATED FUNCTIONAL SAFETY AND CYBERSECURITY ANALYSIS METHOD FOR SMART MANUFACTURING SYSTEMS
PublicationThis article addresses integrated functional safety and cybersecurity analysis with regard to: the generic functional safety standard IEC 61508 and the cyber security standard IEC 62443 concerning an industrial automation and control system (IACS). The objective is to mitigate the vulnerability of information technology (IT) and operational technology (OT) systems, and reduce relevant risks taking into account a set of fundamental...
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Equivalent single-layer models in deformation analysis of laminated multilayered plates
PublicationThe performance of selected Equivalent Single-Layer (ESL) models is evaluated within several classical benchmark tests for linear static analysis of multi-layered plates. The authors elaborated their own Finite Element software based on the first-order shear deformation theory (FOSD) with some modifications incorporated including a correction of the transverse shear stiffness and an application of zig-zag type functions. Seven...
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ANALYSIS OF BONE WEDGE DIMENSIONS SELECTION METHODS IN HIGH TIBIAL OSTEOTOMY
PublicationThe article presents the analysis of methods for selecting dimensions of bone wedge for high tibial osteotomy. The existing methods are described along with the procedure. In the following paragraphs, deficiencies in the selection of bone wedge dimensions and global trends in this field have been demonstrated. Based on the numerical analysis, the problem appearing in the wrong choice of bone wedge imensions was illustrated.
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The effects of selected factors on regional road fatalities – analysis of the Łódź region
PublicationAnalysis of regional accident records shows that a country’s national road safety programme does not have the same effect in each of its regions. What may be a serious problem in one region may be of marginal significance in another. Polish and international experience shows that main risk groups and types of accidents related to the level of development and quality of the road network differ from region to region. The conclusion...
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GENOMIC ANALYSIS OF PLANT-ASSOCIATED BACTERIA AND THEIR POTENTIAL IN ENHANCING PHYTOREMEDIATION EFFICIENCY
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Energy Policy until 2050—Comparative Analysis between Poland and Germany
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Recognition of two-phase flow patterns with the use of dynamic image analysis
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The FMO analysis of the molecular interaction of fentanyl derivatives with the μ-opioid receptor
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Two-phase flow structure assessment based on dynamic image analysis
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Recent Trends in the Application of Chromatographic Techniques in the Analysis of Luteolin and Its Derivatives
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Analysis and modeling of variables of the precise shredder’s pneumatic material transport’s system
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Analysis of continuous-to-discrete transformation effect on a synthesis filter bank project
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Analysis of the Impact Resistance of Toecaps by the Finite Element Method: Preliminary Studies
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Analysis of Efficiency of Thermoelectric Personal Cooling System Based on Utility Tests
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Analysis of the effect of mass events on car traffic in the city in the daily interval
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Design and Thermodynamic Analysis of an SOFC System for Naval Surface Ship Application
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Comparative analysis of national and regional models of the silver economy in the European Union
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Application of the fluid–structure interaction technique for the analysis of hydrodynamic lubrication problems
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Analysis of longitudinal wave propagation in a cracked rod by the spectral element method
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Performance analysis of untraceability protocols for mobile agents using an adaptable framework
PublicationArtykuł przedstawia środowisko oceny wydajności protokołów ochrony przed tropieniem agentów mobilnych oraz wyniki analiz przeprowadzonych za jego pomocą. Chociaż środowisko projektowano i implementowano z myślą o ewaluacji zaproponowanych przez nas protokołów ochrony przed tropieniem, w trakcie badań okazało się, że może ono zostać również wykorzystane do badań całej klasy protokołów bezpieczeństwa dla agentów mobilnych. Chodzi...
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Diagnostic system of cylindrical shell based on experimental modes and wavelet analysis
PublicationArtykuł poświęcony jest technice lokalizacji uszkodzeń w powłoce cylindrycznej. Na podstawie eksperymentalnie wyznaczonych postaci drgań oraz analizy falkowej wyznaczono miejsce uszkodzenia. Przedstawiono algorytm poszukiwania uszkodzeń poprzez zastosowanie sztycznej sieci neuronowej.
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Application of Electrical Capacitance Tomography for bulk solids flow analysis in silos
PublicationW artykule przedstawiono wyniki aplikacji metody ECT w analizie przepływów materiałów sypkich, zarówno bezkohezyjnych, jak również kohezyjnych. Omówiono podstawy techniczne metody ECT, przeprowadzono dyskusje parametrów zmiennych (zagęszczenie początkowe, szorstkość ścian).
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Metrological analysis of surface quality aspects in minimum quantity cooling lubrication
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Surface roughness analysis of hardened steel after high‐speed milling
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The analysis of instantaneous tool displacements during precise ball end milling
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Quantitative proteomic analysis of anticancer drug RH1 resistance in liver carcinoma
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Investigation of Anti-Lock Braking System failures using wavelet analysis
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Analysis of molecular structure of starch citrate obtained by a well-stablished method
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In Depth Analysis of Chiroptical Properties of Enones Derived from Abietic Acid
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Performance Analysis and Quantification of BeiDou Navigation Satellite System (BDS-3)
PublicationPositioning, Navigation, and Timing (PNT) information play a vital role in everyday life of common persons. People greatly rely on Global Navigation Satellite System (GNSS)-enabled applications for navigation to reach their desired destination. However, GNSS navigation performance is highly degraded in urban environments due to the high probability of signal interruption, multipath (MP), and/or non-line-of-sight (NLOS) signal...
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Diagnosis of Brain Tumors Through Global Specific DNA Methylation Analysis
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Analysis of experimental and simulated vibrational spectra for the antiferroelectric liquid crystal 12OBBB1M6
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Designing the Composition of Cement-Stabilized Rammed Earth with the Association Analysis Application
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Sensitivity analysis of the contractor’s financial effects achieved on a single building site
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Analysis of the amount of retained austenite in the structure of steel rolls for sheet rolling
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Analysis of Factors Affecting Quality of Life in Patients Treated for Maxillofacial Fractures
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Thermo-resonance analysis of an excited graphene sheet using a new approach
PublicationForced vibration of graphene nanoplate based on a refined plate theory in conjunction with higher-order nonlocal strain gradient theory in the thermal environment has been investigated. Regarding the higher-order nonlocal strain gradient theory, both stress nonlocality and size-dependent effects are taken into account, so the equilibrium equations which are governing on the graphene sheet have been formulated by the theory....
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Photodegradation of Benzo-[a]-pyrene on the Surface of the Photocatalytic Paints and Analysis of the Degradation Products
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Does growing wealth influence hedge funds’ development? An empirical analysis
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Field investigation and numerical analysis of an inverted pavement system in Tennessee, USA
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Reliability-Operational Analysis of the LED Lighting Module Including Electromagnetic Interference
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Microarray analysis of differentially expressed genes in cells resistant to HIV-1
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Errors of Surface Topography Parameter Calculation in Grinded or Turned Details Analysis
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The Effect of Herbal Supplements on Blood Pressure: Systematic Review and Meta-Analysis
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Resolving Selected Problems in Surface Topography Analysis by Application of the Autocorrelation Function
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Numerical analysis of the influence of combustible material on the temperature field during fire
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