Physical Behavior Research Articles

Signature of electrothermal transport in 18 nm vertical junctionless gate-all-around nanowire field effect transistors

Abstract Addressing temperature hot-spots resulting from self-heating effects (SHE) poses a significant challenge in the design of emerging nanoscale transistors, such as vertical junctionless nanowire field-effect transistors (VNWFETs), due to reduced thermal conductivity. Consequently, electrothermal modeling becomes crucial for a comprehensive understanding of the underlying physical mechanisms governing carrier degradation and thermal conduction in these nanoscale devices. In this study, we present an enhanced drift-diffusion model coupled with nonlocal Guyer-Krumhansl (GK) equations to accurately capture carrier-phonon interactions and explore the electrothermal characteristics of gate-all-around (GAA) VNWFETs. Pulsed current-voltage (I–V) measurements are employed to investigate the performance of a state-of-the-art 18nm VNWFET technology. Furthermore, we report on the influences of both trapping and SHE under high-bias conditions for varying pulse widths. Our findings reveal that optimization of mobility degradation mechanisms allows for improved control over the physical behavior of carrier transport in these emerging technologies. Through careful consideration of these factors, it becomes possible to enhance the overall performance of GAA VNWFETs, particularly in mitigating temperature hot-spots and addressing challenges associated with self-heating effects.

Effects of lockdowns in shaping socioeconomic behaviors

Lockdowns were implemented to reduce the transmission of the COVID-19 virus. However, it is unclear how severely curtailed physical interaction shapes individual behaviors that are considered vital for socioeconomic development. In this exploratory study, we investigate the behavior of college students who experienced a strict campus-wide lockdown and those who did not. Employing a combination of experimental and survey methodologies, we elicit students' behavioral variables, which are then integrated with administrative records from the university. We find that those exposed to the lockdown were more likely to trust others and be honest; however, their creativity was lower. Exposure to the lockdown was not found to significantly affect students' trustworthiness, risk preferences, or competitiveness. A follow-up study reveals that the lower creativity among students may be attributed to reduced communication frequency with friends during the lockdown, mediating the lockdown's impact. Conversely, the effects of the lockdown on trust and honesty may operate through a direct pathway, independent of changes in daily activities during the lockdown. Further analysis reveals a gender-dependent trend, with lockdowns exerting a more pronounced influence on male students than their female counterparts. These results underscore the consequences of lockdowns and advocate for enhanced support networks, emphasizing the importance of communicating with friends in similar circumstances.

Physical Properties and Mechanical Behavior of WSi2 at High Pressure

Physical Properties and Mechanical Behavior of WSi2 at High Pressure

The exact analytical solutions of the (2+1)-dimensional extended Korteweg–de Vries equation using bilinear neural network method and bilinear residual network method

The [Formula: see text]-dimensional extended Korteweg–de Vries (KdV) equation is predominantly utilized to elucidate the propagation of waves that exhibit both dispersive and nonlinear characteristics within the domain of nonlinear physics. This paper employs the bilinear neural network method (BNNM) to derive the exact analytical solutions of the equation. By constructing various bilinear neural network models, we obtain lump solution, breather solution and periodic interaction solution of the equation. The bilinear residual network method (BRNM) is an extension of BNNM. We apply BRNM under specific constraints to obtain breather solution of the equation, thereby offering a broader conceptual framework. Subsequently, various 3D plots, contour plots, density plots and x-curves are used to illustrate the physical properties and dynamic behaviors of these waves.

Sexual and Affectionate Behaviors and Satisfaction for Adults in Romantic Relationships: A Latent Profile Analysis.

Engaging in both sexual and affectionate behaviors with a romantic partner is often beneficial for adults' sexual and relationship satisfaction and promotes relationship stability. However, prior research has primarily examined either adults' sexual or affectionate behaviors, and has yet to explore patterns of sexual and affectionate behaviors and their associations with sexual and relationship satisfaction. In the current paper, we used a person-centered approach and latent profile analysis to identify specific profiles of adults' physical behaviors in same-gender and mixed-gender relationships, and examined associations of these profiles with sexual and relationship satisfaction. Adults (N = 336, 85.4% LGBTQ+; 45% women, 30% men, 38.6% gender-diverse; Mage = 29.07 years) who were currently in a committed romantic partner relationship for at least six months completed online surveys. We found that a 3-profile solution best fit the data and identified the following profiles: Infrequent Physical Behaviors, Affection-focused Behaviors, and Comprehensive Physical Behaviors. Adults in the Infrequent Physical Behaviors profile were less sexually and relationally satisfied than adults in the other profiles. Adults in the Comprehensive Physical Behaviors profile were more sexually satisfied than the two other profiles. Further, profiles did not differ for mixed-gender compared to same-gender or gender-diverse couples. Our findings have implications for understanding the diversity in adults' physical behavior patterns, including how clinicians might better support adults' sexual and relationship satisfaction.

Controlled Synthesis of Bioderived Poly(limonene carbonate)-Oligolysine Hybrid Macromolecules.

A straightforward and stepwise functionalization of poly(limonene carbonate) (PLC) was achieved through the use of thiol-ene click chemistry introducing primary amine groups. These amines are initiating points for N-carboxy anhydride (NCA) ring-opening polymerization (ROP) reactions, allowing us to modify the PLC backbone with oligolysine fragments, thereby creating a polymer brush type macromolecule. These newly prepared biohybrid structures show a clear hydrophilic behavior as evident from their physical behavior and contact angle measurements.

Physical activity in the Fontan population: provider recommendations and patient actions.

Emerging evidence suggests that routine physical activity may improve exercise capacity, long-term outcomes, and quality of life in individuals with Fontan circulation. Despite this, it is unclear how active these individuals are and what guidance they receive from medical providers regarding physical activity. The aim of this study was to survey Fontan patients on personal physical activity behaviours and their cardiologist-directed physical activity recommendations to set abaseline for future targeted efforts to improve this. An electronic survey assessing physical activity habits and cardiologist-directed guidance was developed in concert with content experts and patients/parents and shared via a social media campaign with Fontan patients and their families. A total of 168 individuals completed the survey. The median age of respondents was 10 years, 51% identifying as male. Overall, 21% of respondents spend > 5 hours per week engaged in low-exertion activity and only 7% spend > 5 hours per week engaged in high-exertion activity. In all domains questioned, pre-adolescents reported higher participation rates than adolescents. Nearly half (43%) of respondents reported that they do not discuss activity recommendations with their cardiologist. Despite increasing evidence over the last two decades demonstrating the benefit of exercise for individuals living with Fontan circulation, only a minority of patients report engaging in significant amounts of physical activity or discussing activity goals with their cardiologist. Specific, individualized, and actionable education needs to be provided to patients, families, and providers to promote and support regular physical activity in this patient population.

Chiral, Topological, and Knotted Colloids in Liquid Crystals

The geometric shape, symmetry, and topology of colloidal particles often allow for controlling colloidal phase behavior and physical properties of these soft matter systems. In liquid crystalline dispersions, colloidal particles with low symmetry and nontrivial topology of surface confinement are of particular interest, including surfaces shaped as handlebodies, spirals, knots, multi-component links, and so on. These types of colloidal surfaces induce topologically nontrivial three-dimensional director field configurations and topological defects. Director switching by electric fields, laser tweezing of defects, and local photo-thermal melting of the liquid crystal host medium promote transformations among many stable and metastable particle-induced director configurations that can be revealed by means of direct label-free three-dimensional nonlinear optical imaging. The interplay between topologies of colloidal surfaces, director fields, and defects is found to show a number of unexpected features, such as knotting and linking of line defects, often uniquely arising from the nonpolar nature of the nematic director field. This review article highlights fascinating examples of new physical behavior arising from the interplay of nematic molecular order and both chiral symmetry and topology of colloidal inclusions within the nematic host. Furthermore, the article concludes with a brief discussion of how these findings may lay the groundwork for new types of topology-dictated self-assembly in soft condensed matter leading to novel mesostructured composite materials, as well as for experimental insights into the pure-math aspects of low-dimensional topology.

Physical Activity Behaviors and Negative Safety and Violence Experiences Among High School Students - Youth Risk Behavior Survey, United States, 2023.

Schools are in a unique position to offer opportunities for students to be physically active throughout the school day and promote health and well-being. However, experiences that threaten safety or perceptions of safety might affect students' physical activity behaviors. Using the 2023 national Youth Risk Behavior Survey, six physical activity behaviors and five negative safety and violence experiences were examined from a nationally representative sample of U.S. high school students. This report updates national estimates for physical activity behaviors overall and by sex, grade, race and ethnicity, and sexual identity. In addition, associations between negative experiences and physical activity behaviors were examined, stratified by sex, via unadjusted and adjusted prevalence ratios. Regardless of negative safety and violence experiences, male students had a higher prevalence of meeting aerobic, muscle-strengthening, and both aerobic and muscle-strengthening physical activity guidelines compared with female students. In adjusted models among female students, a positive association was observed between being threatened or injured with a weapon at school and meeting the aerobic guideline, meeting the muscle-strengthening guideline, and playing on ≥1 sports team. Among male students, positive associations were observed between witnessing neighborhood violence and meeting the aerobic guideline and the muscle-strengthening guideline. A negative association was observed between attending physical education classes on all 5 days and witnessing neighborhood violence among female students and being bullied electronically among male students. Physical activity might serve as a mechanism that students employ to cope with negative safety and violence experiences. Understanding current physical activity behaviors among students with these negative experiences will be useful for school leaders, teachers, and public health practitioners who influence physical activity infrastructure and programming in schools and work to support safe, supportive, and inclusive school environments for student health. Although future research is needed to further explore these associations, physical activity continues to be an important behavior to prioritize for adolescent health in the school setting.

Adolescents’ health literacy is directly associated with their physical activity but indirectly with their body composition and cardiorespiratory fitness: mediation analysis of the Slovak HBSC study data

BackgroundHealth literacy is a core public health issue in relation to children and adolescents associated with multiple health behaviours and health outcomes. The aim of the study is to test the direct associations between health literacy, physical activity behaviour, health outcomes of body composition and cardiorespiratory fitness among Slovak adolescents and possible indirect effect of health literacy on health outcomes of body composition and cardiorespiratory fitness mediated by adolescents’ physical activity behaviour.MethodsData from the Slovak Health Behaviour in School-aged Children (HBSC) study conducted in 2022 were used. For the purposes of this study, a subsample of the adolescents (n = 508; mean age = 14.50; SD = 0.82; 54.3% boys) which provided HBSC questionnaire data on health literacy, moderate-to-vigorous physical activity and vigorous physical activity and participated in body composition (InBody 230) and cardiorespiratory fitness (20-m shuttle run test) measurements. Data were analysed using linear regression analysis.ResultsThe findings showed that higher health literacy of the adolescents was directly associated with higher frequency of physical activity represented by moderate-to-vigorous physical activity and vigorous physical activity and only with the visceral fat area in the crude model. Furthermore, there was an indirect effect of health literacy on cardiorespiratory fitness and most of the body composition variables (except the Body Mass Index) which was mediated by physical activity of the respondents.ConclusionsHealth literacy is indirectly associated to body composition and cardiorespiratory fitness through higher frequency of physical activity. It seems that health literacy as cognitive and social competencies need behavioural components to be involved in the proposed causal pathway between health literacy and health outcomes. Our findings may contribute to the process of creating a framework for future health literacy interventions in adolescents.

Procedural Justice in Practice: A Comprehensive Study of its During the Implementation of the Criminal and Civil Procedure in the Basic Court of Gjilan and its Branches

Propose: This study aims to analyze the implementation of the core principles of procedural justice Understanding, Neutrality, Respect, and Voice in the Basic Court of Gjilan and its branches. Method: The perceptions and experiences of individuals involved in judicial processes will be evaluated through statistical, qualitative and quantitative methods, structured questionnaires, interviews, direct observation of court sessions (including communication, physical and emotional behavior of judicial staff), and analysis of audio/video recordings and official documentation, such as court decisions and communications. Results: The study will assess the level of dignity and respect experienced by individuals, investigate opportunities to voice opinions and concerns, evaluate the perceived neutrality of decision-makers, and assess their trustworthiness.

Fertility and teratogenic study of the aqueous extract of Hibiscus sabdariffa L. in female Sprague Dawley rats

Hibiscus sabdariffa (roselle) has long been gaining attention in phytotherapy research due to its medicinal properties. Despite its benefits, there is very scarce information available on the reproductive toxicity of this plant. The aqueous extract of H. sabdariffa (AEHS) was tested in the present study to investigate its potential effects on fertility and teratogenicity in 40 female Sprague Dawley rats. AESH treatment was administered orally by gavage at four different dosages: 250, 500 and 1000 mg/kg/day or distilled water (control). Treatment began from pre-mating and continued through mating up to the 19th day of pregnancy periods. Throughout this study, the reproductive parameters were evaluated until the day of sacrifice (day 20th of pregnancy). Results obtained revealed no significant differences in general physical health, behaviours and maternal body weights throughout the treatment period. Furthermore, the mean length of the oestrous cycle was not statistically affected, even though a few rats displayed irregular cycles. In addition, there was no statistical significance in the mating and pregnancy indices, number of corpora lutea and implantation sites, percentages of pre-implantation loss and postimplantation death and reproductive organ weights. Foetal parameters such as the number of live foetuses, sex ratio and body weight were also not statistically affected by AESH. Ultimately, there were no signs of teratogenicity observed since none of the foetuses exhibited congenital malformations. In conclusion, these findings imply that the oral administration of AEHS up to 1000 mg/kg/day did not pose any significant toxicity on the fertility and teratogenicity but slightly affected the oestrous cycle in rats.

HabitWalk: A micro-randomized trial to understand and promote habit formation in physical activity.

Habit is a key psychological determinant for physical activity behavior change and maintenance. This study aims to deepen the understanding of habit formation in physical activity and identify promotion strategies. We examined the habit formation trajectory and its relationships with cue-behavior repetition (a cue-triggered 15-minute brisk walk) and unconditional physical activity (daily steps). We also tested whether the behavior change techniques (BCTs) 'commitment' and 'prompts and cues' promote habit, cue-behavior repetition, and daily steps within persons. This micro-randomized trial included a 7-day preparatory and a 105-day experimental phase delivered via the HabitWalk app. Participants (N = 24) had a 50% probability of receiving each BCT daily, leading to four conditions. Habit strength was assessed daily using the Self-Report Behavioral Automaticity Index, while cue-behavior repetition and steps were measured via an activity tracker. Person-specific growth functions indicated that habit strength trajectories were highly idiosyncratic. Multilevel models indicated a positive effect of cue-behavior repetition on habit strength, but not vice versa. The effect of habit strength on daily steps varied by the operationalization of cue-behavior repetition. Tentative findings suggest that commitment and prompts and cues are effective habit-promotion strategies when delivered together.

Giant Decrease in Interfacial Energy of Liquid Metals by Native Oxides.

Native oxides form on the surface of many metals. Here, using gallium-based liquid metal alloys, Johnson-Kendall-Roberts (JKR) measurements are employed to show that native oxide dramatically lower the tension of the metal interface from 724 to 10 mNm-1. Like conventional surfactants, the oxide has asymmetry between the composition of its internal and external interfaces. Yet, in comparison to conventional surfactants, oxides are an order of magnitude more effective at lowering tension and do not need to be added externally to the liquid (i.e., oxides form naturally on metals). This surfactant-like asymmetry explains the adhesion of oxide-coated metals to surfaces. The resulting low interfacial energy between the metal and the interior of the oxide helps stabilize non-spherical liquid metal structures. In addition, at small enough macroscopic contact angles, the finite tension of the liquid within the oxide can drive fluid instabilities that are useful for separating the oxide from the metal to form oxide-encased bubbles or deposit thin oxide films (1-5nm) on surfaces. Since oxides form on many metals, this work can have implications for a wide range of metals and metal oxides in addition to explaining the physical behavior of liquid metal.

Baseline Health of University Workers Pre-Intervention in Lifestyle: HaSEN

Objective: The aim of the present study was to analyse and compare the initial health situation before starting the lifestyle programme in 4 editions of the programme. Theoretical framework: HaSEN is an annual intervention programme for the generation of healthy habits on eating behaviour (psychonutrition) and active lifestyle (physical exercise) in university workers in the contemplative phase of motivation to change. Methods: A total of 74 workers participated between the 2019, 2020, 2021 and 2022 editions from a Spanish university (24-59 years; M = 42.3; SD = 8.5) 19 men (26%) and 55 women (74%). Anthropometric, biological, lifestyle and psychological variables were analysed. Results and Discussion: Anthropometric, biological, lifestyle and psychological variables were analysed. Adherence to the Mediterranean diet in the 2021 edition workers at the start of the intervention was found to be higher than in 2019 and achievement motivation higher than in 2020, results that could be related to the special situation derived from the Covid-19 pandemic. Implications of the research: This shows the importance of knowing the baseline health status of workers in behaviours such as those observed in the last edition (2022) in terms of worsening adherence to the Mediterranean diet. This aspect highlights the need to apply interventions such as the HaSEN programme for the maintenance of a healthy lifestyle in terms of nutrition and physical exercise behaviour in the population under study. Originality/value: This study contributes to the scientific literature on public health in the population of university workers. It provides retrospective and prospective information on baseline health status and motivation to change habits to maintain a lifestyle in a working population subjected to high levels of work demands and the implications that this may have on the overall health status of this population.

Cystine crystal nucleation and decay in the context of cystinuria pathogenesis and treatment.

Cystinuria is a rare disease which results in the precipitation of cystine in the renal filtrate, which may cause acute kidney injury due to mechanical trauma. In this work, we attempt to explore the origin of supersaturated cystine in this context to understand disease pathogenesis. This has enabled us to reproduce the clinical habit of cystine following a comprehensive study of cystine nucleation and growth in saline, artificial and human urine. Then, we describe the physical behaviour of these crystals in the presence of: cysteamine, sodium bicarbonate, captopril, tiopronin, penicillamine, glutathione and α-lipoic acid. Surprisingly, we observe that, in vitro, only cysteamine and saturated sodium bicarbonate dissolve crystals at a faster rate than saline, and that when solution pH is adjusted to physiological conditions, crystal dissolution for all agents is reduced to the rate of saline alone. We highlight that the conventional hypothesis of mixed disulphide formation in cysteamine is not the fastest mechanism of cystine dissolution, but rather that cystine dissolution (in the order of hours) is dominated by pH effects. This, combined with cysteamine's ability to take part in disulfide exchange reactions may explain cysteamine's effectiveness in this condition. Overall, our findings not only contribute to an understanding of cystinuria pathogenesis but also offer insights into how we should evaluate emerging treatments.

Educator perspectives on stressors and health: a qualitative study of U.S. K-12 educators in February 2022

BackgroundTeachers experienced increased stressors and stress during the initial onset of the COVID-19 pandemic. While many educators returned to in-person instruction in the 2021–2022 school year, they faced changing job demands and stressors which has important implications for educator well-being. We sought to understand the stressors and health impacts faced by U.S. educators in the 2021–2022 school year, two years following the acute phase of the pandemic.MethodsThirty-four certified educators based in Connecticut, USA participated in four virtual focus groups in February 2022. A semi-structured focus group script, designed by the research team and guided by the job demands-resources model, was administered to understand stressors and stress impacts. Data were transcribed and analyzed using the constant comparative method to identify themes and sub-themes. Themes were summarized based on how many participants mentioned them.ResultsAnalysis of the qualitative data yielded three themes concerning the well-being impacts of stress: physical health and health behaviors, psychological health, and relationships and social well-being behaviors. The majority of educators indicated impacts in these domains with 76% indicating impacts on physical health and health behaviors (e.g. poor sleep, physical exhaustion, lack of exercise, unhealthy eating), 62% indicating impacts on psychological health (e.g. emotional exhaustion, anxiety, negative self-evaluation); and 68% indicating impacts on relationships social well-being behaviors (e.g. connections with family or friends, connections with others, relationships with coworkers). The majority (94%) of educators indicated that stressors from the school or district with the majority (91%) citing stressors related to protocols/expectations (e.g. excessive or increased demands, insufficient or decreased resources) and some (38%) administrators. Over half (62%) indicated personal stressors including personal/home life (41%), high personal expectations (18%), and income (18%). Some (35%) indicated either the pandemic (26%) or safety concerns (9%) were stressors. Some (24%) cited students’ parents as a stressor and a few indicated community (12%), students (12%), and state or national level (9%) stressors.ConclusionEducator well-being continued to be impacted in the post-pandemic era. Targeted interventions are needed to reduce school and district-related demands and to address stress-related educator well-being.

Physical activity levels are positively related to progression-free survival and reduced adverse events in advanced ER+ breast cancer.

Increased levels of physical activity are associated with a reduction of breast cancer mortality, especially in postmenopausal women with positive hormone receptor status. So far, previous observational case-control and cohort studies have focused on associations between overall leisure time physical activity and survival of women with breast cancer in general. In this multicenter prospective cohort study, conducted in Germany between 30th August 2012 to 29th December 2017, we investigated general physical activity in a homogenous sample of n = 1440 postmenopausal women with advanced (inoperable locally advanced or metastatic), hormone receptor-positive breast cancer receiving the same therapy (everolimus and exemestane). Self-reported physical activity was assessed using the Godin Leisure Time Exercise Questionnaire (GLTEQ) before and every 3months during treatment. Participants were then classified into "active" and "insufficiently active" to screen their activity behavior the week prior to medical treatment. In addition, changes in physical activity patterns were assessed. Adjusted Cox regression analyses were performed for the activity categories to determine hazard ratios (HR). Besides progression-free survival (PFS), adverse events (AEs), QoL, and fatigue were assessed every 3months until study termination. Compared to "insufficiently active" patients, "active" individuals indicated a significantly longer PFS (HR: 0.84 [0.74; 0.984], p = .0295). No significant differences were observed for changes of physical activity behavior. Patients who reported to be "active" at baseline revealed significantly fewer AEs compared to "insufficiently" active patients. In detail, both severe and non-severe AEs occurred less frequently in the "active" patients group. In line with that, QoL and fatigue were better in physical "active" patients compared to their insufficient active counterparts at the last post-baseline assessment. Participants who remained or become active indicated less AEs, a higher QoL, and reduced fatigue levels. Physical activity behavior prior to medical treatment might have prognostic value in patients with advanced breast cancer in terms of extending the PFS. Moreover, physical activity before and during treatment may reduce treatment-related side effects and improve patients' QoL and fatigue. EUPAS9462. Registered 30th October 2012 "retrospectively registered."

Precision livestock farming in the 21st century: Challenges and opportunities for sustainable agriculture

Abstract This study aimed to review the recent development of different technologies in precision livestock farming (PLF), along with their scopes and challenges. PLF is an innovative, contemporary, and fast-expanding approach to agriculture that aims to improve sustainable livestock farming. The growing global population has increased the demand for animal products. To meet this demand, farmers have to increase their production, so without the integration of precision technology, this cannot be achieved. PLF currently employs a variety of technologies. Some of these methods include vision-based solutions, load cells, accelerometers, microphones, thermal cameras, photoelectric sensors, and radio-frequency identification (RFID). Despite the availability of different PLF technologies, their adoption by farmers varies widely on the basis of the cost of investment, ease of operation, availability, and accessibility. These technologies are used to track different activities of livestock farming, such as feeding, drinking, physical behavior, temperature regulation, tracking and identification, estrus detection, disease detection, and milking. PLF contributes significantly to technological advancement, human-animal relationships, environmental sustainability, and increased productivity. It does, however, present a number of obstacles and eventual advantages.

Physical activity motivations and psychological well-being among university students: a canonical correlation analysis.

With increasing concern about mental health issues and active lifestyles among university students, understanding the interplay between different physical activity motivations and various dimensions of psychological well-being is important. The present study aims to explore the canonical relationship between physical activity motivations based on self-determination theory and psychological well-being according to Ryff's model in university students. Nine hundred and sixty-six Chinese university students participated in this study. A canonical correlation analysis was conducted using six variables of motivations as predictors of six variables of psychological well-being. The canonical correlation analysis yielded two canonical functions. The first canonical function, which was primary, indicated that intrinsic motivation, integrated regulation, identified regulation, and introjected regulation contributed the most to psychological well-being. The second canonical function indicated that a decrease in external motivation and amotivation accounted for an increase in personal growth. This study underscores the importance of elucidating the underlying motivations driving physical activity behaviors in order to enhance psychological well-being in this population.