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Featured Application: Prediction and selection of the clamping conditions of large-size workpieces for the purpose of milling, based on modal tests and milling simulations. Vibrations occurring during milling operations are one of the main issues disturbing the pursuit of better efficiency of milling operations and product quality. Even in the case of a stable cutting process, vibration reduction is still an important goal. One of the possible solutions to obtain it is selection of the favorable conditions for clamping the workpiece to the machine table. In this paper, a method for predicting and selecting the clamping condition of a large-size workpiece for the reduction in vibrations during milling is presented. A modal test of the workpiece is performed first for a selected set of tightening screw settings. Next, one milling pass is performed to obtain reference data which are then used to tune the hybrid computational model. In the subsequent step, milling simulations are performed for a set of tightening variants, and the best one is selected, providing the lowest vibrations, assessed as the root mean square (RMS) of vibration displacements. In this paper, the description of the clamping selection procedure, key elements of the simulation model, and simulation and experimental results obtained for the milling of the test workpiece performed for a set of different clamping conditions are provided. The proposed method accurately predicts not only the best but also the worst clamping conditions. [ABSTRACT FROM AUTHOR]

The progress of field research and studies of archaeological sites from southern Poland (Małopolska) and experimental activities related to salt-making in the Bronze Age and Early Iron Age in the last two decades have created conditions for attempting to recreate the chaîne opératoire of this branch of prehistoric production. The use of ceramic containers for evaporating brine and drying and portioning salt means that we are dealing with two operational sequences (production of ceramics and salt) intertwined at some stage – from obtaining raw materials (clay and brine) to the distribution of transportable product and discarding of disposable containers. We conducted multi-aspect studies on the characteristics of materials related to each stage, including their spatial location, based on all available material from western Małopolska, in particular several large-scale benchmark sites (Podłęże 17, Brzezie 17 and Kraków-Bieżanów 11). This allowed us to identify certain differences in production sites. A comprehensive review of the source database also allowed us to establish a rather limited scope of both the degree of craft specialisation of the brewers and the scale of the centre’s influence. Nevertheless, in some periods, as in the beginning of the Urnfield period, this centre gained supra-regional importance, as evidenced by, among others, certificates of weight standardization of finished products. [ABSTRACT FROM AUTHOR]

The article reviews issues associated with the operation of stationary and non-stationary electronic fire alarm systems (FASs). These systems are employed for the fire protection of selected buildings (stationary) or to monitor vast areas, e.g., forests, airports, logistics hubs, etc. (non-stationary). An FAS is operated under various environmental conditions, indoor and outdoor, favourable or unfavourable to the operation process. Therefore, an FAS has to exhibit a reliable structure in terms of power supply and operation. To this end, the paper discusses a representative FAS monitoring a facility and presents basic tactical and technical assumptions for a non-stationary system. The authors reviewed fire detection methods in terms of fire characteristic values (FCVs) impacting detector sensors. Another part of the article focuses on false alarm causes. Assumptions behind the use of unmanned aerial vehicles (UAVs) with visible-range cameras (e.g., Aviotec) and thermal imaging were presented for non-stationary FASs. The FAS operation process model was defined and a computer simulation related to its operation was conducted. Analysing the FAS operation process in the form of models and graphs, and the conducted computer simulation enabled conclusions to be drawn. They may be applied for the design, ongoing maintenance and operation of an FAS. As part of the paper, the authors conducted a reliability analysis of a selected FAS based on the original performance tests of an actual system in operation. They formulated basic technical and tactical requirements applicable to stationary and mobile FASs detecting the so-called vast fires. [ABSTRACT FROM AUTHOR]

The article introduces a method for selecting the best clamping conditions to obtain vibration reduction during the milling of large-size workpieces. It is based on experimental modal analysis performed for a set of assumed, fixing conditions of a considered workpiece to identify frequency response functions (FRFs) for each tightening torque of the mounting screws. Simulated plots of periodically changing nominal cutting forces are then calculated. Subsequently, by multiplying FRF and spectra of cutting forces, a clamping selection function (CSF) is determined, and, thanks to this function, vibration root mean square (RMS) is calculated resulting in the clamping selection indicator (CSI) that indicates the best clamping of the workpiece. The effectiveness of the method was evidenced by assessing the RMS value of the vibration level observed in the time domain during the real-time face milling process of a large-sized exemplary item. The proposed approach may be useful for seeking the best conditions for fixing the workpiece on the table. [ABSTRACT FROM AUTHOR]

Introduction: Language and speech serve as significant biomarkers for psychiatric disorders, including schizophrenia. The linguistic features associated with schizophasia have been a focal point since the early descriptions of schizophrenia. Over the past twenty-five years, scientific reflection on language in mental illnesses has dynamically provided new data identifying the complex phenomenon of speech pathology in schizophrenia. Material and methods: A bibliometric analysis was conducted using SCOPUS data, focusing on word co-occurrence patterns in schizophrenia research. VOSviewer was employed for visualization, and semantic relationships between words were explored. Results: An analysis has revealed trends and gaps in research on schizophasia. Integrating temporal and spatial visualizations of metadata has allowed for the identification of currently employed measures of incoherence in schizophatic texts across various levels of linguistic organization. Keyword modeling has demonstrated a growing interest in utilizing artificial intelligence techniques to develop linguistic biomarkers for schizophrenia and other mental disorders. Conclusions: The harmonization of computational methods for measuring narrative, dialogic, and prosodic coherence holds promise, particularly in cross-validation studies involving other neuroindicators of mental disorders. Developing linguistic biomarkers using broadly understood artificial intelligence requires multidisciplinary research teams integrating experts from psychiatry, neurolinguistics, neurologopedics, and AI engineering. Clear domain-specific regulations are essential to ensure accurate conclusions and ethical considerations. The study of schizophasia prospects is particularly evident at the lexical, semantic, and syntactic levels, along with affective and neurophysiological variables. [ABSTRACT FROM AUTHOR]

This paper presents a detailed analysis of aluminium-doped zinc oxide (AZO) thin films and considers them a promising alternative to indium tin oxide in transparent electrodes. The study focusses on critical properties of AZO, including optical, electrical, and mechanical properties, with potential applications in displays, photovoltaic cells, and protective coatings. The deposited AZO thin films are characterised by excellent optical and electrical parameters, with transparency in the visible light range exceeding 80% and resistivity of 10−3 Ω·cm, which gives a high value of figure of merit of 63. Structural analysis confirms the nanocrystalline nature of as-deposited AZO thin films, featuring hexagonal ZnO, orthorhombic Al2O3, and cubic Al2ZnO4 phases. The study includes nanoindentation measurements, which reveal exceptional hardness (11.4 GPa) and reduced elastic modulus (98 GPa), exceeding typical values reported in the literature, highlighting their protective potential. Abrasion tests have shown extraordinary scratch resistance due to the lack of impact on topography and surface roughness up to 10,000 cycles. This comprehensive study demonstrated that as-deposited AZO thin films are multifunctional materials with exceptional optical, electrical, and mechanical properties. The findings open up possibilities for a variety of applications, especially in protective coatings, where the combination of hardness, scratch resistance, and transparency is both rare and valuable. [ABSTRACT FROM AUTHOR]