Search

This research explores the use of the rotation-based outlier detection (ROD) method for identifying geochemical anomalies in a multivariate stream sediment dataset from Iran, targeting porphyry and vein-type Cu mineralization. Geochemical datasets often present challenges for outlier detection methods like local outlier factor (LOF) and k-nearest neighbor (KNN), which rely on distance or density metrics and require parameter tuning (e.g., neighborhood size k). High-dimensional feature spaces further complicate their application. ROD, in contrast, offers a parameter-free, rotation-based approach that effectively analyzes geometric relationships between samples in subspaces, mitigating the curse of dimensionality. This makes ROD particularly suited to high-dimensional geochemical datasets, where complex relationships between elements (due to lithology or mineralization) are critical for identifying anomalies. This study compares ROD with LOF and KNN using two subsets of geochemical variables (Ag, As, Au, Bi, Co, Cr, Cu, Mo, Ni, Pb, Sb, Zn; and Ag, As, Au, Cu, Mo, Sb) and evaluates its performance based on the receiver operating characteristic (ROC) analysis and the number of known mineral occurrences detected in anomaly class. ROD outperforms LOF and KNN, capturing 78% (14 out of 18) of known Cu-bearing mineral occurrences. Moreover, ROD shows better conformity between 10% of highest outlier scores and Cu-mineralization sites. Rotation cost function in ROD, evaluated using the median absolute deviation (MAD), enhances its ability to detect outliers by focusing on orientation rather than distance, and by reducing noise misclassification. In addition, the parameter-free design of ROD and improved handling of high-dimensional data makes it a promising tool for geochemical exploration, as it captures unique mineralization-related signals that might be missed by traditional methods. [ABSTRACT FROM AUTHOR]

Conventional liquid crystal elastomer (LCE)-based robots are limited by the need for complex controllers and bulky power supplies, restricting their use in micro-robots and soft robots. This paper introduces a novel light-powered dicycle that uses an LCE rod, enabling self-rolling by harvesting energy from the environment. The LCE rod serves as the driving force, with energy being supplied by a line light source. Employing a dynamic LCE model, we calculate the transverse curvature of the LCE rod after deformation, as well as the driving moment generated by the shift in a rod's center of gravity, which allows the dicycle to roll on its own. Through extensive numerical simulations, we identify the correlations between the angular velocity of the dicycle and the key system parameters, specifically the light intensity, LCE rod length, light penetration depth, overall mass of the dicycle, rolling friction coefficient, and wheel radius. Further, the experimental verification is the same as the theoretical result. This proposed light-powered self-rolling dicycle comes with the benefits of the simple structure, the convenient control, the stationary light source, and the small luminous area of the light source. It not only demonstrates self-sustaining oscillations based on active materials, but also highlights the great potential of light-responsive LCE rods in applications such as robotics, aerospace, healthcare, and automation. [ABSTRACT FROM AUTHOR]

AbstractWe demonstrate a method to calculate high-precision benchmarks for the reflectance and transmittance of a finite rod with a stochastic cross section, assuming that the attenuation law has a known closed form and both the single-scattering albedo and scattering kernel are deterministic. We introduce new 10-digit values for an existing binary-Markov benchmark (including mean and variance), along with several new benchmarks defined for non-Markov binary mixtures and a continuous-fluctuation model featuring gamma stationary statistics. Furthermore, we reveal that our analysis of scattering in the stochastic rod enables a practical algorithm for identifying the parameters of an $$n$$n-ary Markov mixture that most accurately approximates transport in a non-Markov system. [ABSTRACT FROM AUTHOR]

When we enter a dark place, such as a tunnel, from a bright exterior, our visual sensitivities take some time to adapt to lower light levels. However, there have been few reports on how quickly luminance and chromaticity discrimination sensitivities recover in this situation. This study aims to quantify the time course of discrimination sensitivity for luminance and chromaticity directions after an abrupt decrease in background luminance. In each trial, the background luminance was decreased from 100 to 1 cd/m2. Subsequently, one target and three reference stimuli of different colors were presented under four stimulus‐onset asynchrony (SOA) conditions. The participants discriminated the target stimulus from reference stimuli. The results showed that discrimination sensitivity was the lowest right after the background luminance changed and gradually improved with SOAs. The sensitivity decreases differed across color directions, with the greatest decrease in luminance, a moderate decrease in S−(L + M), and a negligible change in L−M. However, statistically significant differences were observed only between luminance and L−M, suggesting that the sensitivity decrease after the abrupt decrease in background luminance did not significantly differ between the chromaticity directions. We speculate that these results stem from the interaction between chromatic perception and luminance adaptation, and possibly from rod intrusions. [ABSTRACT FROM AUTHOR]

In this paper, we analyze effects of hot rolling on the shape, structure, texture, and properties of a Ti–4.5Al–3Mo–V alloy (VT14) titanium alloy. The phase composition, texture, and morphology of the formed phases in the initial state and after rolling are determined. The effect of the deformation degree between the passes on the formation of various components of the deformation texture and recrystallization is shown. The dependence of VT14 alloy widening during flattening under the action of hot deformation in one pass are analyzed. A decrease in the widening coefficient at a similar degree of deformation is noted. Relationships between the studied hot deformation routes, the α/β-phase ratio, the morphology of the secondary α phase, the development of recrystallization in the β phase, as well as the hardness and contact elasticity modulus of VT14 alloy were determined. [ABSTRACT FROM AUTHOR]

The evidence for imitation coinage found on the Gallo‐Roman site of Châteaubleau (Seine‐et‐Marne, France) has been attested for several years. Successive excavations and findings related to the production of imitation coins, both struck and cast, have revealed major minting activity during the second half of the third century CE. This paper presents the study of 11 archaeological samples issued from this counterfeiting workshop site, which is today considered the most important in the north‐western provinces of the Roman Empire. These samples, which correspond to different stages in the production chains leading to coins, mainly radiates (antoniniani, double sestertii), were characterized by metallography, energy‐dispersive X‐ray fluorescence (EDXRF), scanning electron microscopy with energy‐dispersive spectroscopy (SEM‐EDS) and the Vickers hardness test, in order to understand the different manufacturing processes, especially the ‘rod to coin’ one. This project is divided into two parts. The first, which is the subject of this paper, focuses on the chemical and metallurgical study of the archaeological artefacts. This has enabled us to identify and characterize the manufacturing processes thanks to the highly characteristic microstructure of the samples from the rod‐to‐coins process. Some of the cylinders derived from this process were also silvered by plating a foil of silver or silver–copper on a flan of pure copper in order to obtain irregular radiates. As regards fake double sestertii, several manufacturing techniques were identified: direct moulding of coins in stacked terracotta moulds, the casting of flans to strike double sestertius and the cutting of flans from metal plate is also a technique used in Châteaubleau. Characteristic composition and microstructures were also observed in these samples. This paper will be followed by a second focused on two experimental archaeology sessions carried out in order to reproduce the process ‘from rod to coins’ and then to compare the reproduced samples with the archaeological samples. [ABSTRACT FROM AUTHOR]

This research aimed to improve diagnosis of non-alcoholic fatty liver disease (NAFLD) by deep learning with ultrasound Images and reduce the impact of the professional competence and personal bias of the diagnostician. Three convolutional neural network models were used to classify and identify the ultrasound images to obtain the best network. Then, the features in the ultrasound images were extracted and a new convolutional neural network was created based on the best network. Finally, the accuracy of several networks was compared and the best network was evaluated using AUC. Models of VGG16, ResNet50, and Inception-v3 were individually applied to classify and identify 710 ultrasound images containing NAFLD, demonstrating accuracies of 66.2%, 58.5%, and 59.2%, respectively. To further improve the classification accuracy, two features are presented: the ultrasound echo attenuation coefficient (θ), derived from fitting brightness values within sliding region of interest (ROIs), and the ratio of Doppler effect (ROD), identified through analyzing spots exhibiting the Doppler effect. Then, a multi-input deep learning network framework based on the VGG16 model is established, where the VGG16 model processes ultrasound image, while the fully connected layers handle θ and ROD. Ultimately, these components are combined to jointly generate predictions, demonstrating robust diagnostic capabilities for moderate to severe fatty liver (AUC = 0.95). Moreover, the average accuracy is increased from 64.8% to 77.5%, attributed to the introduction of two advanced features with domain knowledge. This research holds significant potential in aiding doctors for more precise and efficient diagnosis of ultrasound images related to NAFLD. [ABSTRACT FROM AUTHOR]

A mathematical model of a rod is developed for investigation of the motion of points under the combined action of longitudinal, transverse, and torsional forces. Equilibrium equations are derived for a rod in variable three-dimensional elastoplastic loading and unloading. The stress–strain state of the rod is analyzed on the basis of the generalized Masing principle. [ABSTRACT FROM AUTHOR]

The aim of this study was to investigate and compare justice sensitivity between self-perceived beneficiaries, victims, and observers in a sample of 90 healthcare workers (nurses and physiotherapists) at the Varaždinske Toplice Special Medical Rehabilitation Hospital, Croatia. For this purpose we used a questionnaire consisting of demographic data and the Croatian version of the justice sensitivity inventory developed by Schmitt. Regardless of its limitations, our study clearly shows that healthcare professionals at Varaždinske Toplice are most sensitive to injustice from the beneficiary’s perspective, that is, as persons who personally benefitted from injustice, although they may not have been instrumental to this effect. They are less sensitive to injustice perceived on the outside (observer’s perspective) or to injustice suffered by themselves (victim’s perspective). Another important finding is that participants of female gender, rural residence, and nurses (who are all women) are significantly more sensitive to injustice, whereas age and marital status do not seem to contribute to justice sensitivity. Future research should investigate the perception of injustice over a longer timeframe and involve all healthcare workers. It could also address different approaches to management, especially in terms of worker rewards and career advancement. Qualitative research among healthcare workers could provide a broader and clearer idea of social injustice at their workplace.

Copyright of Archives of Industrial Hygiene & Toxicology / Arhiv za Higijenu Rada I Toksikologiju is the property of Sciendo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The paper considers a non-classical optimization problem associated with the development of the production of new functionally graded materials. It is proposed to optimize the first natural frequency of oscillations by choosing the law of change in elastic moduli, and not the shape, as is done in most works devoted to optimization. This formulation of the problem becomes practically justified with the development of 3D printing and the production of FGM ceramics with specified properties. As an example, the problems of oscillations of a FGM rod and a FGM beam with spring boundary conditions at one of the ends are considered. [ABSTRACT FROM AUTHOR]

Explosive welding allows joining metals and alloys in almost any combinations unlike various types of fusion welding. It provides the ability of manufacturing products with a combination of service properties of applied materials with a high level of strength, tightness, fatigue strength, etc. In addition to bimetals produced in fairly large volumes for chemical and oil equipment, explosive welding is used to manufacture products with special characteristics for different industries. Producing coaxial joints (welding is performed along generatrices of axisymmetric coaxial tubes) can be attributed to a special class of tasks, since they are more economical than alternative methods of their production. In some cases, a permanent joint can be created by explosion compression without welding of elements to be joined. This work presents a number of technological processes for manufacturing coaxial products developed at the PWI, which use both welding and explosive compression. The presented developments testify that a wide range of practical tasks can be solved with the help of explosion. [ABSTRACT FROM AUTHOR]

Copyright of Stanovništvo is the property of Demographic Research Center of Institute of Social Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Unlike different type of fusion welding, explosion welding allows joining metals and alloys in almost any combinations, which provides the possibility of manufacturing products with a combination of service properties of the used materials at a high level of strength, tightness, fatigue strength, etc. Except of bimetals produced in fairly large volumes for chemical and oil equipment, explosion welding is used to manufacture products with special characteristics for different industries. It is possible to attribute the production of coaxial joints of different metals (welding occurs along generatrices of axisymmetric co-axial pipes), which are more complex and interesting from a scientific point of view, and more economical in practice than alternative methods of their production, as a special class of tasks. In some cases, dissimilar joint can be created by explosion crimping without welding the elements to be joined. This work presents a number of technological processes for manufacture of coaxial products developed at the PWI, using both explosion welding and crimping. The presented developments testify that a wide range of practical tasks can be solved with the help of explosion. 18 Ref., 11 Fig. [ABSTRACT FROM AUTHOR]

Copyright of Issues in Ethnology Anthropology is the property of Issues in Ethnology Anthropology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Croatian & Comparative Public Administration is the property of Institut za Javnu Upravu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The following work focuses on determining the temperature profile of porous rod using radiative and insulated tip conditions. In addition, graphs are generated to investigate the impact of several non-dimensional attributes on the distribution of temperature for various modes of energy exchange, such as boiling of nucleates and radiative energy exchange, including the convection-conduction parameter, permeability parameter, and radiation-conduction parameter. ND solve technique is applied to solve the generated nonlinear partial differential equation by using MATHEMATICA. The transient thermal response has been visually presented for various key parameters with ranges p=0,2, Nr=1,5,10, Nc=0.3,0.4,0.5, Pe=0.1,0.2,0.3, Q=0.1,0.2,0.3, Bi=1,2,3. The graphical outcome reveals that temperature distribution is a decreasing function of radiation parameter. Exposure time of the rod to the environment gets short for the enhancement in Peclet number. Initially temperature contours are linear, as time progresses the exponential behavior is developed.

Ovaj rad predstavlja prvi doprinos istraživanju rodnih razlika u obrascima kohortnog fertiliteta u Srbiji. Koristili smo posebno obrađene rezultate Popisa 2022. koji obuhvataju jednogodišnje kohorte žena rođenih 1940-1982. i muškaraca rođenih 1940-1977. godine. Koristeći stope progresije ka redovima rađanja (paritetima), ispitali smo promene i rodne obrasce završenog kohortnog fertiliteta iz perspektive obrazovnih razlika s obzirom na ulogu obrazovne ekspanzije u promenama fertiliteta poslednjih decenija. Analiza metodom dekompozicije pokazala je da je značajan porast bezdetnosti i pad progresije ka drugom detetu među kohortama rođenim posle 1960. godine ključni razlog pada završenog fertiliteta oba pola. Razvoj odnosa obrazovanja i fertiliteta doveo je do promena u obrazovnim diferencijalima fertiliteta kod oba pola, ali i do veoma izraženog rodnog jaza u obrascima ovih razlika. Konvergencija u završenom fertilitetu među različitim obrazovnim grupama u starijim kohortama muškaraca pretvorila se u divergenciju između niskoobrazovanih i više obrazovanih u mlađim generacijama, što je rezultiralo pozitivnim obrazovnim gradijentom u skorijem završenom fertilitetu muškaraca. Negativan obrazovni gradijent u završenom fertilitetu zabeležen je u svim kohortama žena, pri čemu se jaz između nisko i visokoobrazovanih udvostručio među mlađim u poređenju sa starijim kohortama. Razvoj obrazovnih razlika u bezdetnosti među kohortama doveo je do rodne konvergencije među visokoobrazovanim i divergencije među niskoobrazovanim u Srbiji, za razliku od procesa koji se odvijao u rodno egalitarnijim društvima. Nedostatak konvergencije u tranziciji ka drugom i trećem detetu među različitim obrazovnim grupama oba pola, što je posebno izraženo kod žena, sugeriše da što je osoba obrazovanija, to joj je teže da proširuje porodicu zbog nedostatka institucionalne podrške roditeljstvu i rodne jednakosti unutar porodice. Identifikovani obrasci završenog kohortnog fertiliteta u Srbiji potvrđuju teorijske pretpostavke i nalaze iz drugih država da u društvima sa izraženijom rodnom nejednakošću i politikama podrške porodici koje nisu dovoljno rodno i roditeljski senzitivne veći oportuni troškovi roditeljstva dovode do nižeg fertiliteta i obrnuto.

Signal integration of converging neural circuits is poorly understood. One example is in the retina where the integration of rod and cone signaling is responsible for the large dynamic range of vision. The relative contribution of rods versus cones is dictated by a complex function involving background light intensity and stimulus temporal frequency. One understudied mechanism involved in coordinating rod and cone signaling onto the shared retinal circuit is the hyperpolarization activated current (Ih) mediated by hyperpolarization-activated cyclic nucleotide-gated 1 (HCN1) channels expressed in rods and cones. Ih opposes membrane hyperpolarization driven by activation of the phototransduction cascade and modulates the strength and kinetics of the photoreceptor voltage response. We examined conditional knock-out (KO) of HCN1 from mouse rods using electroretinography (ERG). In the absence of HCN1, rod responses are prolonged in dim light which altered the response to slow modulation of light intensity both at the level of retinal signaling and behavior. Under brighter intensities, cone-driven signaling was suppressed. To our surprise, conditional KO of HCN1 from mouse cones had no effect on cone-mediated signaling. We propose that Ih is dispensable in cones because of the high level of temporal control of cone phototransduction. Thus, HCN1 is required for cone-driven retinal signaling only indirectly by modulating the voltage response of rods to limit their output.SIGNIFICANCE STATEMENT Hyperpolarization gated hyperpolarization-activated cyclic nucleotide-gated 1 (HCN1) channels carry a feedback current that helps to reset light-activated photoreceptors. Using conditional HCN1 knock-out (KO) mice we show that ablating HCN1 from rods allows rods to signal in bright light when they are normally shut down. Instead of enhancing vision this results in suppressing cone signaling. Conversely, ablating HCN1 from cones was of no consequence. This work provides novel insights into the integration of rod and cone signaling in the retina and challenges our assumptions about the role of HCN1 in cones.

A series of poly(lauryl methacrylate)-poly(ethyl methacrylate) (PLMA-PEMA) diblock copolymer nano-objects were prepared via reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization in n-heptane at 65 °C. By using PLMA with a fixed degree of polymerization (DP) of 18 as a steric stabilizer block, polymerization of EMA at relatively high concentrations (15% w/w solids or above) allowed for the production of nano-objects with morphologies of sphere, worm and vesicle. Interestingly, at lower concentrations, the diblock copolymer could form unusual structures: micrometer-sized rods and nanotubes at 10% and 7.5% w/w solids, respectively. The SEM and TEM characterization suggests that the rods are kinetically trapped aggregates of worms and spheres, and the formation of nanotubes is presumably due to the fusion of ellipsoidal vesicles and then the shear force exerted by stirring which may trigger the elongation of the vesicles to form the nanotubes. Besides, the diblock copolymer worms exhibited thermoresponsive behavior on heating to 90 °C due to the change in nano-object morphology from worms to spheres. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Henan University of Science & Technology, Natural Science is the property of Editorial Office of Journal of Henan University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study develops a double cantilever beam test by using a specific fixture for measuring the representative critical energy release rate of rigid composite rods. Carbon fiber reinforced epoxy composite rod was used for the evaluation. Finite element analysis applying Cohesive Zone Model was used to estimate the relationship between load and displacement. In addition, for verifying the effect of specimen width on the measurement, the representative critical energy release rate was estimated and compared with reference to the crack length measured from the center or outer tip of the crack. The numerical results showed close value to that of experiment. This suggests that an effective representative critical energy release rate can be measured by the proposed method. [ABSTRACT FROM AUTHOR]

The object of the study is flexible piezoelectric bimorphs of rod and membrane types, consisting of two or more homogeneous piezoelectric layers (films) of equal thickness with the same or opposite-directional polarization, interlayer, and external electrodes (are electrode coatings). The solution of the actual problem has been considered: increasing the operating characteristics of flexible piezoelectric bimorphs for more efficient use as generators of electric energy, sensors, and actuators—converters of control electrical signals into movement of working surfaces for manipulating or assembling microscale objects. The regularities of the influence of the magnitude of the initial longitudinal load applied to the ends of a bimorphic rod or uniformly distributed along the outer circular contour (perimeter) of the bimorphic round membrane on the resulting performance values for flexible piezoelectric bimorphs of the rod and membrane types, respectively, have been investigated. We believe that the magnitude of the longitudinal force applied to the movable end of the rod bimorph or to the outer perimeter of the membrane does not change over time and does not exceed the corresponding value of the strength of instability considering the cantilever or hinge fastening of the bimorph. Therefore, we have variable multidirectional bending directions of the bimorph (actuator) when an alternating control electric voltage is applied to the electrodes, i.e., when the sign of the control electric voltage is changed, the direction of bending (blocking force) also changes to the opposite one and after "switching off" the control electric voltage, the bimorph returns from the curved state to the original rectilinear one. Analytical solutions have been obtained for the deformation fields: deflections and angles of rotation of working cross sections of flexible piezoelectric bimorphs using the well-known "hypothesis of flat sections" and the method of Mor's integrals in Mechanics of Materials. The effect of increasing the resulting deflections and blocking forces of flexible piezoelectric bimorphs because of the action of the initial compressive load has been identified and studied. The results of numerical modeling have been obtained for a flexible rod bimorph made of PZT piezoceramic layers, the effective deformation characteristics of which were determined by solving the reverse problem on the basis of the results of other authors. The cases of cantilever and hinge fastening of the ends of the rod bimorph have been considered. It has been found that the magnitude of the blocking force for the bimorph in the form of a hinged rod significantly exceeds that for the bimorph in the form of a cantilever, while the action of the longitudinal compressive force linearly increases the magnitude of the deflection and blocking force of the bimorph. [ABSTRACT FROM AUTHOR]

he aim of this research was to examine attitudes about gender roles in marriage (GRA) and striving for achievement (SFA) as antecedents within a model of work-family conflict on a sample of employed spouses in Croatia. Job (assessments of psychological requirements and social support at work) and family characteristics (quality of family functioning and social support in the family) were examined as mediators of the relationship between SFA and GRA with work-to-family (WFC) and family-to-work conflict (FWC), along with studying the model invariance regarding spouse gender. The study was conducted on a total of 358 employed spouses in Croatia who have at least one child in the household, using the research method of self-assessments. The results show support for complete mediation of higher levels of favourable work and family assessments in the relationship of more egalitarian GRA and lower SFA of spouses with lower levels of WFC and FWC. Organizations should be aware of and support the differences in the strivings and attitudes of their employees as well as the diversity of their life roles. [ABSTRACT FROM AUTHOR]

Copyright of Social Sciences & Humanities Studies / Društvene i Humanističke Studije (DHS) is the property of Faculty of Humanities & Social Sciences, University of Tuzla and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Social Sciences & Humanities Studies / Društvene i Humanističke Studije (DHS) is the property of Faculty of Humanities & Social Sciences, University of Tuzla and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Social Sciences & Humanities Studies / Društvene i Humanističke Studije (DHS) is the property of Faculty of Humanities & Social Sciences, University of Tuzla and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Annals of the Croatian Political Science Association / Anali Hrvatskog Politoloskog Drustva is the property of Croatian Political Science Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Novi Izraz is the property of P.E.N. Centre Bosnia & Herzegovina and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Libri & Liberi is the property of Croatian Association of Researchers in Children's Literature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Studies of Socio-Economics & Humanities / Socioekonomické a Humanitní Studie is the property of College of Banking, Banking Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article discusses the issue of the origin of a rod fastening defect. At the beginning of operation, the rod is rigidly fixed at the edges. During operation, over time, certain defects may appear at the ends of the rod. We need to find out what defects may occur? Then it is necessary to trace the further behavior of the emerging defects at the ends of the rod. This paper discusses the diagnostics of types of fastening of a structure made of interconnected rods. In this work, the state of fastening types in individual parts of the structure is determined and a number of results are obtained using mathematical analysis. Most of them assume how failures begin at the end connections of the rods, and then the scenario for their further development. Mathematical models are presented to determine the state of the rod attachments relative to the proposed scenario, and then the state in which they are in is carefully examined. Defects in fastening objects made from a system of rods are investigated using identification problems. The difference between this article and other works is that instead of the shape of the area, the size of the object, or the state of its location, defects that occur in fasteners are studied. This work is devoted to the search for types of fastening that provide the required range of vibration frequencies. [ABSTRACT FROM AUTHOR]

The article considers technological schemes of cold‑formed wire production for bearing rolling elements production. Several technological schemes of wire production are considered. The paper presents a step‑by‑step development of drawing technology of alloyed (chromium) bearing steel grade. Problems arising at drawing of bearing steels are described. The reason of formation of “flaking” on the surface of rod is revealed. Ways of solving the problem of unsatisfactory drawing of wire from bearing steel grades are stated.Relevance and novelty of technical and technological solutions of the present work are caused by the absence of production of calibrated wire for manufacturing of rolling elements of bearings on the territory of the Republic of Belarus. The development of this type of production will allow to increase the production of high‑tech products with a deep degree of processing (calibrated wire) for the growth of profitability and efficiency indicators. Creation of production of calibrated wire for manufacturing of rolling elements of bearings will allow to reach new consumers of metal products with increase of added value of finished products.