Study Of Behavior Research Articles

A comparative study of the high-pressure structural stability of zirconolite materials for nuclear waste immobilisation

We present a comparative study of the high-pressure behaviours of the nuclear waste immobilisation materials zirconolite-2 M, −4M, –3O, and −3T. The materials are studied under high-pressure conditions using synchrotron powder X-ray diffraction. For zirconolite-2 M we also performed density-functional theory calculations. A new triclinic crystal structure (space group P1¯), instead of the previously assigned monoclinic structure (space group C2/c) is proposed for zirconolite-2 M. We named the triclinic structure as zirconolite-2TR. We also found that zirconolite-2TR undergoes a phase transition at 14.7 GPa to a monoclinic structure described by space group C2/c, which is different than the high-pressure structure previously proposed in the literature. These results are discussed in comparison with previous studies on zirconolite-2 M and the related compound calzirtite. For the other three zirconolite structures (4 M, 3O, and 3 T) this is the first high-pressure study, and we find no evidence for pressure induced phase transitions in any of them. The linear compressibility of the studied compounds, as well as a room-temperature pressure–volume equation of state, are also presented and discussed.

Summary vision on the symbology of the sacred mountains of theAndes

Studies of the religious behavior of the Andean peoples have not yet been able to attract specialists in social science, due tothe academic preconception of the «pantheon of the Andean gods» and the context of the process of urban desacralization of our time. However, some managed to elucidate the ritual formulas and expressions of myth as components and imprints of the religious system in action. And, insofar as they are social facts, they are related to the productive capacities,social feelings and the value system of their environment. With this concern, we propose to show a limited bibliographic summary of conceptual contributions, theoretical advances and ethnographic records of contemporary Andean religiousthought. Based on our experience in the Ayacucho region on the conceptual management of pagapu and wamani as ritual axes of propitiation and hard nuclei of cultural matrix, in a context of migratory movements and growing social conflicts.

Summary vision on the symbology of the sacred mountains of theAndes

Studies of the religious behavior of the Andean peoples have not yet been able to attract specialists in social science, due tothe academic preconception of the «pantheon of the Andean gods» and the context of the process of urban desacralization of our time. However, some managed to elucidate the ritual formulas and expressions of myth as components and imprints of the religious system in action. And, insofar as they are social facts, they are related to the productive capacities,social feelings and the value system of their environment. With this concern, we propose to show a limited bibliographic summary of conceptual contributions, theoretical advances and ethnographic records of contemporary Andean religiousthought. Based on our experience in the Ayacucho region on the conceptual management of pagapu and wamani as ritual axes of propitiation and hard nuclei of cultural matrix, in a context of migratory movements and growing social conflicts.

Artificial Intelligence: A Quick Overview of Speech Recognition System

Abstract: The study of intelligent behaviour is known as artificial intelligence. Wagner said, "We build intelligent machines in science." By this, he implied that the primary goal is to teach these sophisticated devices, such as computers, to examine and comprehend human conduct. numerous believed that human intelligence might be understood through the construction of several programmes, while other researchers believed that numerous basics should be required in order to accomplish the intended objective. We can carry out or replicate any type of task we conduct using a computer. Therefore, computers are the ideal devices for developing artificial intelligence. In the hopes that they will outperform computers in several other areas, some researchers created additional computing devices. Billions of dollars were invested in creating new devices that surpassed the speed of the computer used to simulate software. However, the computers and the code both need to be extremely quick. As you learn about artificial intelligence, you may wonder, what really is intelligence? How is intelligence measured? Turn become something quite significant. In this case, the programme that evaluates its surroundings acts as the intelligent agent. Modern digital computers and human minds are comparable to one other in ways such as symbolic information processing systems. Both use symbolic data as input, change it in accordance with predetermined guidelines, and then use the results to solve issues. In order to mechanically replicate intelligent human activity, artificial intelligence researchers have programmed some algorithms to recognise intelligent human behaviour. Human conduct in language processing, chess, and other games, as well as medical diagnostics, may be used to monitor this activity. Voice recognition is a key component of AI. A certain voice may be recognised using voice recognition technology. The cornerstone for speaker identification is voice signals. Voice targeting is applicable to a wide range of applications, including voice mail, database access, phone banking, and phone purchasing. The ability to enter one's voice for verification is among the most potent uses of voice recognition for security. The fundamental means of interpersonal communication is speech. The technique of translating voice sounds into appropriate text is known as speech recognition. Over the past few years, speech recognition technology has advanced significantly. Nonetheless, there are other significant study obstacles, such as variations in speaker and language, ambient sound, word size, etc. This study aims to give a comprehensive overview of speech acceptance by summarising the several approaches utilised in the standard speech system and describing the numerous processes involved

Thermodynamic Study of Adsorption behaviors of Trivalent Metal Ions onto Chelating Resin: Comparison between Scandium(III) and Other Metal Ions

Thermodynamic Study of Adsorption behaviors of Trivalent Metal Ions onto Chelating Resin: Comparison between Scandium(III) and Other Metal Ions

Another market segment: sport event tourism by disabled athletes

Sports and tourism are connected in various parts of economies, cultures, and nations. However, there has been a limited understanding of sports event tourism involving disabled athletes. This study explored the behavioral and socio-demographic implications of the disabled sports event tourism and investigated the motivational factors involved. An in-person survey was administered to 108 disabled athletes who attended the summer and winter Paralympics. A Structural Equation Model was used to determine the association between the factors of life satisfaction, emotional happiness, escapism, perceived value, and future intention, using the Monte Carlo parametric bootstrapping method to test significance of direct and indirect effects. Cronbach was acceptable because it exceeds 0.70 which satisfies the cut-off of confirmatory factor analysis. In addition, the individual values of average variance extracted (AVE), were greater than 0.50 (0.72) which meets the requirement and the convergent validity of all the constructs. The results showed that life satisfaction had a significant direct effect on future intentions. Emotional happiness had a significant direct effect on the perceived value of an event. Escapism had significant direct effects on perceived value and future intentions. Perceived value significantly influenced future intentions. The relationship between emotional happiness and future intention was fully mediated by perceived value. However, the relationship between escapism and future intention was only partially mediated by perceived value. The results of this study are valuable for developing future management and marketing policies for disabled athletes and tourists to advance the existing sports event tourism and disabled athlete’s behavior studies.

Numerical study of plasma behavior in a disk‐shaped noble gas MHD generator

AbstractPlasma behavior in cesium‐seeded argon (Ar/Cs) and xenon‐seeded argon (Ar/Xe) disk‐shaped MHD generators are compared under almost the same working conditions using r‐θ two‐dimensional simulation. For both working gases, uniform plasma occurs at the optimum load resistance, and the power outputs are the same under an identical inlet ionization degree. For Ar/Cs, plasma is stable and uniform in the range of electron temperature of 4300–5800 K basically according to the linear perturbation theory. In the actual plasma in the MHD generator, however, the uniform plasma still can be maintained even at higher electron temperatures due to the low three‐body recombination coefficient of Ar. For Ar/Xe, on the other hand, uniform plasma is maintained when the characteristic time of the electron number density is longer than the residence time of the working gas where the electron temperature is around 4300–8600 K, even though unstable plasma is suggested from the linear perturbation theory.

Experimental Investigations of Heat Transfer in Simultaneously Developing Transitional Regime of Mixed Convection Flows in a Vertical Tube

Abstract The study of flow behaviour in the simultaneously developing transitional regime of mixed convection flows is rare. It has been believed that the transitional regime will give a good compromise between pressure drop and heat transfer compared to laminar and turbulent flow regime. In this experimental study, the friction factor (f) and Nusselt number (Nu) characteristics for buoyancy-assisted and opposed flows of water in concurrently developing transitional regime of mixed convection through a vertical tube are studied. Experiments were done for Reynolds numbers (Re) varying from 500 to 15000, Grashof numbers (Gr) from 1.25×104 to 5×106, Prandtl numbers (Pr) from 3 to 7, and Richardson numbers (Ri) from 0 to 0.1 subjected to uniform heat flux boundary conditions. A flow visualization provision after the test section which confirms an early transition in buoyancy-opposing flow (Rec = 2264) compared to buoyancy-aiding flow (Rec = 2468) at a fixed Ri of 0.1. Further, with the increase in Ri from 0 to 0.1, the average f decreases, and the average Nu increases in both aiding and opposing flows. It confirms that, the onset of transition gets delayed with the increase of heat flux supplied in both the flows. Based on the present outcomes, an efficient heat exchanging device can be operated either to delay or advance the transition in a vertical pipe flow for optimum heat transfer.

Glutamic acid-catalyzed synthesis of dihydroquinazolinone: anticancer activity, electrochemical behavior, molecular docking, dynamics, simulations and drug-likeness studies

Glutamic acid-catalyzed synthesis of dihydroquinazolinone: anticancer activity, electrochemical behavior, molecular docking, dynamics, simulations and drug-likeness studies

Hot Deformation Behavior and Microstructure Evolution Mechanisms of Ti6Al4V Alloy under Hot Stamping Conditions

Through the study of the thermal rheological behavior of Ti6Al4V alloy at different temperatures (500 °C, 600 °C, 700 °C, and 800 °C) and different strain rates (0.1 s−1, 0.05 s−1, 0.01 s−1, and 0.005 s−1), a constitutive model was developed for Ti6Al4V alloy across a wide temperature range in the hot stamping process. The model’s correlation coefficient reached 0.9847, indicating its high predictive accuracy. Hot processing maps suitable for the hot stamping process of Ti6Al4V alloy were developed, demonstrating the significant impact of the strain rate on the hot formability of Ti6Al4V alloy. At higher strain rates (>0.05 s−1), the hot processing of Ti6Al4V alloy is less prone to instability. Combining hot processing maps with hot stamping experiments, it was found that the forming quality and thickness uniformity of parts improved significantly with the increase in stamping speed. The phase composition and microstructures of the forming parts under different heating temperature conditions have been investigated using SEM, EBSD, XRD, and TEM, and the maximum heating temperature of hot stamping forming was determined to be 875 °C. The recrystallization mechanism in hot stamping of Ti6Al4V alloys was proposed based on EBSD tests on different sections of a hot stamping formed box-shaped component. With increasing deformation, the effect of dynamic recrystallization (DRX) was enhanced. When the thinning rate reached 15%, DRX surpassed dynamic recovery (DRV) as the dominant softening mechanism. DRX grains at different thinning rates were formed through both discontinuous dynamic recrystallization (DDRX) and continuous dynamic recrystallization (CDRX), with CDRX always being the dominant mechanism.

A study of thermal and safety behaviour of potassium nitrate in flash powder after surface modification for prevention of self-decomposition due to hygroscopic effect

A study of thermal and safety behaviour of potassium nitrate in flash powder after surface modification for prevention of self-decomposition due to hygroscopic effect

Study of the thermomechanical behavior of composite based on Elium acrylic resin, carbon nanotubes, and flax fibers: Experimental approach

AbstractThis study evaluated the effect of multi‐walled carbon nanotubes (MWCNT) addition on the thermomechanical, and electrical responses of unidirectional flax fibers/Elium acrylic modified carbon nanotubes‐based composite. The manufacturing process of these laminated composites involved infusing the nanofillers onto the fibers, ensuring good dispersion of MWCNT within the matrix. Regardless of the rate of incorporated nanotubes, this study revealed a significant deterioration of the mechanical properties in tension and viscoelastic properties of the Elium acrylic resin‐based nanocomposite. The electrical conductivity significantly increased for all nanocomposites and laminated composites. In contrast to the nanocomposite, the unidirectional flax fibers/MWCNT/Elium acrylic composite exhibited a considerable improvement in mechanical properties. An increase in Young's modulus and stress at break of about 27% and 23% respectively, was achieved for the material loaded with 2 wt% of MWCNT. The presence of MWCNT reduces the saturation weight by 5% for the unidirectional composite filled with an amount of 1.5 wt% in MWCNT.Highlights Improving the electrical properties of nanocomposites and unidirectional fibers (UD) composites. Improving the mechanical properties of Elium/flax/multi‐walled carbon nanotubes (MWCNT) composites. Influence of MWCNTs on the water absorption of UD composites. Influence of MWCNT on the glass transition temperature of nanocomposites. Inhibiting polymerization of MWCNT with Elium.

Events in context—The HED framework for the study of brain, experience and behavior

The brain is a complex dynamic system whose current state is inextricably coupled to awareness of past, current, and anticipated future threats and opportunities that continually affect awareness and behavioral goals and decisions. Brain activity is driven on multiple time scales by an ever-evolving flow of sensory, proprioceptive, and idiothetic experience. Neuroimaging experiments seek to isolate and focus on some aspect of these complex dynamics to better understand how human experience, cognition, behavior, and health are supported by brain activity. Here we consider an event-related data modeling approach that seeks to parse experience and behavior into a set of time-delimited events. We distinguish between event processes themselves, that unfold through time, and event markers that record the experiment timeline latencies of event onset, offset, and any other event phase transitions. Precise descriptions of experiment events (sensory, motor, or other) allow participant experience and behavior to be interpreted in the context either of the event itself or of all or any experiment events. We discuss how events in neuroimaging experiments have been, are currently, and should best be identified and represented with emphasis on the importance of modeling both events and event context for meaningful interpretation of relationships between brain dynamics, experience, and behavior. We show how text annotation of time series neuroimaging data using the system of Hierarchical Event Descriptors (HED; https://www.hedtags.org) can more adequately model the roles of both events and their ever-evolving context than current data annotation practice and can thereby facilitate data analysis, meta-analysis, and mega-analysis. Finally, we discuss ways in which the HED system must continue to expand to serve the evolving needs of neuroimaging research.

Simple Behavioral Analysis (SimBA) as a platform for explainable machine learning in behavioral neuroscience.

The study of complex behaviors is often challenging when using manual annotation due to the absence of quantifiable behavioral definitions and the subjective nature of behavioral annotation. Integration of supervised machine learning approaches mitigates some of these issues through the inclusion of accessible and explainable model interpretation. To decrease barriers to access, and with an emphasis on accessible model explainability, we developed the open-source Simple Behavioral Analysis (SimBA) platform for behavioral neuroscientists. SimBA introduces several machine learning interpretability tools, including SHapley Additive exPlanation (SHAP) scores, that aid in creating explainable and transparent behavioral classifiers. Here we show how the addition of explainability metrics allows for quantifiable comparisons of aggressive social behavior across research groups and species, reconceptualizing behavior as a sharable reagent and providing an open-source framework. We provide an open-source, graphical user interface (GUI)-driven, well-documented package to facilitate the movement toward improved automation and sharing of behavioral classification tools across laboratories.

Study of the shear bond behavior of a hybrid fiber-reinforced concrete (HyFRC) composite slab

In this study, a new composite slab consisting of a prefabricated hybrid fiber-reinforced concrete (HyFRC) formwork and a cast-in-place ordinary concrete (OC) topping was proposed. The HyFRC was comprised of steel and PVA fibers. The compressive strength and bending strength of the HyFRC were 111.4 MPa and 15.6 MPa, respectively, and the toughness coefficient was 12.1 MPa. Seven full-scale composite slabs including six simply-supported slabs and one two-span continuous slab were tested under four-point bending to study the shear bond behavior. Three different contact surface conditions were considered for the simply supported slabs. Despite the different interface conditions, results showed that the interfacial bond strength between the HyFRC formwork and the OC topping was sufficient to achieve flexural failure. Numerical simulation was used to analyze the interfacial force transfer mechanism and was validated by the experimental data. The validated numerical model was used to study the influence of concrete topping depth and amount of reinforcement on the load-carrying capacity and longitudinal shear stress at the joint surface. The numerical results identified a critical condition of positive effect between reinforcement ratio and OC topping thickness. The peak load of a properly designed composite slab was almost two times that of the corresponding slab with ordinary concrete only, and the deformation capability was also larger. A procedure for calculating the flexural capacity of the composite slab was proposed.

The role of xenon/krypton adsorption on the growth of intra-granular bubbles in irradiated UO2

Under transient conditions, rapid fuel swelling in UO2 can occur through fission gas and vacancy capture by intra-granular bubbles. These swellings can lead to significant cladding deformations and clad failure. To understand the mechanisms of intra-granular swelling a number of key experiments have been conducted by the UK in conjunction with the Halden Reactor. Post-irradiation annealing enables the study of the thermal behaviour of the intra-granular bubbles in the absence of complicating processes such as irradiation-induced bubble destruction and fission gas resolution. Bubble-like features are frequently observed in straight lines and it has always been assumed that these were nucleated in the wake of energetic fission fragments and served as nuclei for bubble growth. However, most of these bubbles do not grow significantly and viable intra-granular bubbles are nucleated at much lower densities. At the temperature and pressure that these form, the xenon and krypton are above their critical points and the elements are supercritical fluids. However, bubble growth occurs at temperatures and pressures much greater than the critical points and the gases may be treated with simple equations of state such as those by Clausius or Van der Waals. Of greater importance is the fact that the large Van der Waals forces in these atoms generated by fluctuations in the electron dispositions lead to extensive adsorption on the inner surfaces of the bubbles and vacancy capture by the bubbles can lead to the diffusive loss of fission gas atoms resulting in bubble growth at slight over-pressure conditions. A diffusion model based on Langmuir Adsorption has been developed and shown to be consistent with the out-of-pile annealing studies.

Biomechanical evaluation of a sheep tracheal scaffold.

Tissue engineering is a set of techniques for producing or reconstructing tissue that primarily aims to restore or improve the function of tissues in the human body. The aim of the present study was to evaluate the mechanical and histological characteristics of decellularized tracheal scaffolds prepared in comparison with fresh trachea for use in tracheal repair. In order to prepare the scaffold, sheep's trachea was prepared and after cleaning the waste tissues, they were decellularized. Then decellularized scaffolds were evaluated histologically and laboratory and numerical study of the nonlinear mechanical behavior of tracheal tissue and scaffold and their comparison. Examining the results of histological evaluations showed that the decellularization of the scaffolds was completely done. These results were confirmed by hematoxylin-eosin staining. Also, the exact hyperelastic properties of tracheal tissue and scaffold were used in biomechanical models, and according to the presented results, the five-term Mooney-Rivlin strain energy density function became a suitable behavioral model for modeling the hyperelastic behavior of trachea and scaffold. In total, the results of this research showed that the scaffolds obtained from decellularization by preserving the main compositions of the desired tissue can be a suitable platform for investigating cell behaviors.

Investigation of additively manufactured lattice structures for refractive optical systems based on auxetic properties

AbstractThis paper reports on a novel concept of thermally stable lattice structures for next-generation refractive optical systems. The aim is to develop a metallic mount for optical lenses based on auxetic structures fabricated by additive manufacturing. Auxetic structures exhibit an effective negative Poisson ratio at the macroscopic level. This property is used to develop a mounting structure that compensates for thermal defocus between refractive optical elements. Numerical and experimental studies of the mechanical behavior of additively manufactured body-centered cubic cells provide the basis for the development of this application-specific mounting structure. Several static load cases are analyzed and deviations between numerical and experimental data are examined to quantify differences in dependence of element type, element size, and manufacturing-related geometrical inaccuracies. These results are used to compare the numerical analysis of the Poisson ratio of an auxetic unit cell with the analytical descriptions. This comparison is then applied to two-dimensional auxetic unit cell compounds. These studies provide the basis for the further development process of an auxetic mounting structure.

Ways of integrating eating into everyday lives – a qualitative study in Germany

BackgroundFood-related behaviour is a very complex topic. A common way to reduce complex issues to their essential content is to create a typology. In Germany, with regard to food-related behaviour, the creation of a typology has often been carried out by commercial research institutes, but also by (international) scientific institutes. The former have mostly used quantitative methods, the latter usually have a specific content focus. Within this study, we want to investigate how people integrate eating into their everyday lives while engaging with themselves and the environment, thereby living out personality development and related socialisation.Methods37 qualitative interviews were conducted and evaluated by means of content-structuring qualitative analysis and type-forming qualitative content analysis. Interviewees were recruited via recruitment calls using different channels, such as newspapers or university e-mail lists. Participants over the age of seventeen were eligible to take part in the study. Both the individual action processes and the interpretation processes regarding food-related behaviour were taken into account. The final sample consisted of 20 male and 18 female participants with an age range from 18 to 83.ResultsThe result were seven eating action types, namely: Eating as a way of life, The Relaxed, Eating as self-determination, Eating as a necessary Evil, The Adaptive, The Overstrained and The Controlled.ConclusionsWe contribute to the study of food-related behaviour with the chosen qualitative method of type-building and by looking at how people integrate eating into their everyday lives. This contributes to a broader understanding of this phenomenon and complements the findings of existing commercial and academic food-related typing-building activities. Specifically, through identifying “The Overstrained” as a novel eating action type, this study adds to the literature in the field and may be a useful baseline for future research.

A facile single-cell patterning strategy based on harbor-like microwell microfluidics.

Single-cell analysis is an effective method for conducting comprehensive heterogeneity studies ranging from cell phenotype to gene expression. The ability to arrange different cells in a predetermined pattern at single-cell resolution has a wide range of applications in cell-based analysis and plays an important role in facilitating interdisciplinary research by researchers in various fields. Most existing microfluidic microwell chips is a simple and straightforward method, which typically use small-sized microwells to accommodate single cells. However, this method imposes certain limitations on cells of various sizes, and the single-cell capture efficiency is relatively low without the assistance of external forces. Moreover, the microwells limit the spatiotemporal resolution of reagent replacement, as well as cell-to-cell communication. In this study, we propose a new strategy to prepare a single-cell array on a planar microchannel based on microfluidic flip microwells chip platform with large apertures (50 μm), shallow channels (50 μm), and deep microwells (50 μm). The combination of three configuration characteristics contributes to multi-cell trapping and a single-cell array within microwells, while the subsequent chip flipping accomplishes the transfer of the single-cell array to the opposite planar microchannel for cells adherence and growth. Further assisted by protein coating of bovine serum albumin and fibronectin on different layers, the single-cell capture efficiency in microwells is achieved at 92.1 ± 1%, while ultimately 85 ± 3.4% on planar microchannel. To verify the microfluidic flip microwells chip platform, the real-time and heterogeneous study of calcium release and apoptosis behaviors of single cells is carried out. To our knowledge, this is the first time that high-efficiency single-cell acquisition has been accomplished using a circular-well chip design that combines shallow channel, large aperture and deep microwell together. The chip is effective in avoiding the shearing force of high flow rates on cells, and the large apertures better allows cells to sedimentation. Therefore, this strategy owns the advantages of easy preparation and user-friendliness, which is especially valuable for researchers from different fields.