Explore the vast range of titles available.

This study aims to make an investigation on the relationship between ecotourism motivation (EM), satisfaction (SA), place attachment (PA), and environmentally responsible behavior intention (ER) based on the analysis of camping tourism andstudy the mediating roles of SA and PA in the relationship between EM and ER. A questionnaire-based survey was conducted on 400 camping tourists who visited the Yunnan Province of China within the last year. The distribution of survey questionnaires range from 12 February 2023–24 February 2023. The results reveal that EM positively influences SA, PA, and ER, whereas, although SA positively impacts PA, it does not significantly affect ER. In contrast, PA positively affects ER. Furthermore, PA has a positive mediating impact on the relationship between EM and ER, whereas, SA does not significantly mediate this relationship. Finally, SA and PA act as chain mediators between EM and ER. The findings contribute to the tourism literature by shedding light on the complex relationships between EM, SA, PA, and ER in the context of camping tourism, thereby, enhancing tourist satisfaction and promoting environmentally responsible behavior, thus, contributing to the growth of a sustainable camping industry.

Here, we study the Navier–Stokes equation for the motion of a passive particle based on the Fokker–Planck equation in an incompressible conducting fluid induced by a magnetic field subject to an exponentially correlated Gaussian force in three-time domains. For the hydro-magnetic case of velocity and the time-dependent magnetic field, the mean squared velocity for the joint probability density of velocity and the magnetic field has a super-diffusive form that scales as ∼t3 in t>>τ, while the mean squared displacement for the joint probability density of velocity and the magnetic field reduces to time ∼t4 in t<<τ. The motion of a passive particle for τ=0 and t>>τ behaves as a normal diffusion with the mean squared magnetic field being ∼t. In a short-time domain t<<τ, the moment in the magnetic field of the incompressible conducting fluid undergoes super-diffusion with μ2,0,2h∼t6, in agreement with our research outcome. Particularly, the combined entropy H(v,h,t) (H(h,v,t)) for an active particle with the perturbative force has a minimum value of ∼lnt2 (∼lnt2) in t>>τ (τ=0), while the largest displacement entropy value is proportional to lnt4 in t<<τ and τ=0.

Background As nuclear energy expands globally as a low-carbon power source, ongoing public health surveillance remains important for populations residing near nuclear facilities. Although ionizing radiation is an established carcinogen, population-level patterns of cancer incidence near nuclear installations have shown heterogeneity across tumor types and regional settings. Methods This nationwide, cross-sectional study used Korea’s National Health Information Database (2005–2022), comprising over 103 million person-years of observation from residents living within 30 km of four nuclear power plants and within 10 km of one research reactor. Age-standardized incidence ratios (SIRs) were calculated for 61 tumor types by sex, distance, and facility type using national reference rates. Regional socioeconomic characteristics (education level, occupation, and household income) from the Korea Community Health Survey and proximity to industrial complexes derived from spatial mapping data were examined descriptively to characterize contextual differences across study areas. Results Cancer incidence patterns varied by facility and tumor type. Elevated SIRs were observed for brain and central nervous system (CNS) tumors (1.41–2.46) and bladder cancer (1.25–1.51) near certain nuclear power plants, and for thyroid (1.07–1.32), breast (1.11–1.21), and CNS tumors (1.56–3.37) near the research reactor. No consistent gradient by residential proximity was observed across sites. Descriptive assessments indicated regional variation in socioeconomic profiles and industrial proximity, with higher educational attainment and household income observed in areas surrounding the research reactor and certain industrialized nuclear power plant regions. Conclusion This study provides a comprehensive description of cancer incidence patterns among populations living near nuclear facilities in Korea. The findings underscore the importance of careful contextual interpretation when evaluating spatial variation in cancer incidence and support the role of population-based monitoring frameworks, as well as the need for continued refinement of exposure characterization, to inform public health planning.

Background Concerns about the potential health effects of radiation exposure in communities living near nuclear facilities persist, prompting ongoing studies across various countries. However, research on solid cancers in these communities remains limited. This systematic review and meta-analysis aimed to comprehensively investigate the incidence of various solid cancers among residents near nuclear facilities, providing up-to-date scientific evidence on potential health effects in the context of energy security and net-zero emission targets. Methods A comprehensive search of the databases PubMed, Excerpta Medica Database, and Web of Science was conducted. Data were extracted from 13 studies on breast, bladder, thyroid, CNS, and respiratory cancers, with the meta-analysis focusing on cancer types supported by at least five quantitative estimates to account for study heterogeneity. Study quality was assessed using the Office of Health Assessment and Translation tool. Pooled standardized incidence ratios (SIRs) were calculated using random-effects models, and publication bias was evaluated using funnel plots and Egger’s test. Results The meta-analyses included the following number of cases for each selected cancer type: breast, n  = 20,701; bladder, n  = 5,398; thyroid, n  = 9,907; CNS, n  = 3,634; and respiratory system, n  = 18,033. Pooled SIRs for all cancer subtypes were statistically insignificant and ranged from 0.99 to 1.04, with substantial heterogeneity among studies ( I 2 range: 64%–96%). Little evidence of publication bias was revealed upon visual inspection of the funnel plots and performing Egger’s test. Conclusions Current scientific evidence regarding the incidence of solid cancers in populations living near nuclear facilities is insufficient to draw definitive conclusions. Nonetheless, the wide range of heterogeneity among studies highlights the need for further research with refined study designs, particularly with regard to radiation exposure and individual-level confounding factors, to provide more robust evidence on the public health implications for residents near nuclear facilities.

We first investigate the dynamical behavior of an active Brownian particle influenced by a viscoelastic memory effect characterized by a power-law kernel, under the effects of thermal and active noises. We then analyze the dynamics of an active Brownian particle confined in a harmonic trap in the presence of the same noise sources. To derive the Fokker–Planck equation for the joint probability density of the active particle, we obtain analytical solutions for the joint probability density and its moments using double Fourier transforms in the limits t≪τ, t≫τ, and τ=0. As a result, the mean squared displacement of an active Brownian particle driven by thermal noise exhibits a super-diffusive scaling of t2h+1 in the short-time regime (t≪τ). In contrast, for a particle in a harmonic trap driven by active noise, the mean squared velocity scales linearly with t when τ=0. Moreover, the higher-order moments of an active Brownian particle in a harmonic trap with thermal noise scale with t4h+2 in the long-time limit (t≫τ) and for τ=0, consistent with our analytical results.

In this study, we derive the Fokker–Planck equation for a colloidal particle subject to a harmonic trap and viscous forces under the influence of a magnetic field. We then extend the analysis to a charged colloid driven by both thermal and active noises in the same magnetic environment. Finally, the case of a charged colloid experiencing a harmonic trap together with thermal and active noises is investigated. Analytical solutions for the joint probability density are obtained in the limits of t≪τ, t≫τ, and τ=0. For a colloid under a harmonic trap and magnetic field, the mean squared displacement exhibits a superdiffusive scaling proportional to t[sup.3] in the short-time regime (t≪τ), while the mean squared velocity scales as ∼t when τ=0. For a charged colloid with thermal noise, the mean-squared displacement follows a superdiffusive form ∼t[sup.2h+1] for t≪τ, and the mean squared velocity again scales linearly with time for τ=0. When the active noise is included together with a harmonic trap, the characteristic time scale grows as ∼t[sup.4] in the short-time regime, while the mean squared velocity becomes normally diffusive at τ=0. In the long-time limit (t≫τ) and for τ=0, the moments of the joint probability density under combined thermal and active noises scale as ∼t[sup.4h+2], consistent with our analytical results. Notably, as h→1/2, the entropy of the joint probability density with thermal noise ζ[sub.th](t) coincides with that obtained for active noise ζ[sub.ac](t) in both t≫τ and τ=0 limits.

Mental health significantly affects the physical and emotional development of adolescents. The aim of the current study was to examine how physical activity (PA) and mental health among Korean adolescents changed before and after the start of the COVID-19 pandemic. We used comparative cross-sectional methods, gathering information from the Korea Disease Control and Prevention Agency databases and conducting Chi-square testing and correlation analysis for evaluation. The findings indicate that before and during the pandemic, participation in both moderate- and high-intensity PA, as well as strength training, mitigated stress, depression, and suicidal ideation. Furthermore, the findings confirm the beneficial effects of various physical activities on mental well-being. These insights emphasize the vital role of regular PA in improving mental health among adolescents, particularly during a health crisis such as the pandemic.

This study aimed to compare the changes in physical activity (PA), chronic disease, and mental health indicators of Koreans before and after the COVID-19 outbreak, using raw data from more than 400,000 representative samples from the 2019–2020 Community Health Survey by the Korea Centers for Disease Control and Prevention, and to explore the correlations among them. We used two-way ANOVA to analyze changes and differences in PA and obesity levels. We assessed the influence of gender and recurrent PA using chi-square tests for mental health status and chronic disease. Finally, we performed a correlation analysis to determine the relationships among PA days, mental health, and chronic disease. The results showed that, compared to the levels before the COVID-19 period, moderate-intensity (Days: 1.415~1.217; Time: 114.688~107.321) and high-intensity (Days: 0.798~0.671; Time: 112.866~106.110) PA significantly decreased in Koreans during the COVID-19 period, while low-intensity (Time: 60.305~61.735) PA increased. Before and during the COVID-19 period, men (18,436 (8.1%)~16,124 (7.0%)) performed PA more regularly than women (13,207 (5.8%)~9382 (4.1%)). Compared to the number of regular PA participants before the COVID-19 period, regular PA participants (male, female) decreased from 31,643 (13.8%) to 25,506 (11.1%) during the COVID-19 period. Compared with the levels before the COVID-19 period, the experience rates of stress (3.1%~2.6%), depression (0.8%~0.6%), HBP (3.0%~2.2%), and diabetes (1.2%~0.9%) significantly changed under different levels of conventional PA intervention. In addition, the obesity rate during the COVID-19 period (23.957) was higher than it was before COVID-19 (23.477). During the COVID-19 period, the PA of Koreans was greatly restricted, but low-intensity PA was maintained and increased. PA is an effective activity for maintaining mental health and for preventing and reducing chronic diseases. Recommendations for appropriate intensity or a combination of high-, moderate-, and low-intensity PA should be based on the health status of Koreans to help them maintain mental health and to reduce the risk of chronic diseases during COVID-19 social distancing.

Identifying the predisposing factors to chronic or end-stage kidney disease is essential to preventing or slowing kidney function decline. Therefore, here, we investigated the genetic variants related to a rapid decline in the estimated glomerular filtration rate (eGFR) (i.e., a loss of >5 mL/min/1.73 m2 per year) and verified the relationships between variant-related diseases and metabolic pathway signaling in patients with chronic kidney disease. We conducted a genome-wide association study that included participants with diabetes, hypertension, and rapid eGFR decline from two Korean data sources (N = 115 and 69 for the discovery and the validation cohorts, respectively). We identified a novel susceptibility locus: 4q32.3 (rs10009742 in the MARCHF1 gene, beta = −3.540, P = 4.11 × 10−8). Fine-mapping revealed 19 credible, causal single-nucleotide polymorphisms, including rs10009742. The pimelylcarnitine and octadecenoyl carnitine serum concentrations were associated with rs10009742 (beta = 0.030, P = 7.10 × 10−5, false discovery rate (FDR) = 0.01; beta = 0.167, P = 8.11 × 10−4, FDR = 0.08). Our results suggest that MARCHF1 is associated with a rapid eGFR decline in patients with hypertension and diabetes. Furthermore, MARCHF1 affects the pimelylcarnitine metabolite concentration, which may mediate chronic kidney disease progression by inducing oxidative stress in the endoplasmic reticulum.

Social preference, perceived popularity, and aggression have been studied in the past using traditional methods of statistical analysis. To extend the literature in this area, I used social network analysis to investigate the characteristics of students with a high status in networks of social preference and perceived popularity. I collected data from 283 middle-school students using name generator questionnaires. Most characteristics of students with a high status within the 2 network types were similar to the average characteristics of the sample. Social preference and perceived popularity were significantly and positively associated with athletic ability and aggression, whereas age was significantly and negatively related to aggression. I identified students of high social status with clear characteristics in the 2 network types. Contrary to findings obtained in previous research, I found that aggression contributed to social preference. My findings have implications for the development of programs to address popular individuals' antisocial behavior.