Analysis Of Distribution Research Articles

Nonlinear model of temperature distribution in a ventilated facades and an analytical approach for analysis

Purpose This paper introduces a model for analysis of spatiotemporal distribution of temperature between the wall of a building and the facing of a facade with possible convection air movement. In the framework of the considered model one can take into account native convection of air and possibility of forced convection. This paper aims to analyze the considered distribution of temperature. Also an analytical approach for analysis of the considered distribution to increase predictability of the heat transport with native and forced convection is considered. Design/methodology/approach In this paper we introduce a model for analysis of spatio-temporal distribution of temperature between the wall of a building and the facing of a facade with account possible convection air movement has been analyzed. In the framework of the considered model one can take into account native convection of air and possibility to take into account forced convection. We analyzed the considered distribution of temperature. Also we consider an analytical approach for analysis of the considered distribution to increase of predictability of the heat transport with account native and forced convection. Findings In this paper we introduce a model for analysis of spatio-temporal distribution of temperature between the wall of a building and the facing of a facade with account possible convection air movement has been analyzed. In the framework of the considered model one can take into account native convection of air and possibility to take into account forced convection. We analyzed the considered distribution of temperature. Also we consider an analytical approach for analysis of the considered distribution to increase of predictability of the heat transport with account native and forced convection. Originality/value This paper is original.

Adverse events of nusinersen: a real-world drug safety surveillance study based on the FDA adverse event reporting system (FAERS) database

ABSTRACT Introduction Nusinersen, the initial FDA-approved medication, treats Spinal Muscular Atrophy. This study utilized the FDA’s adverse event reporting system (FAERS) database to examine, evaluate, and provide substantiation for the safety of Nusinersen to assist in clinical decision-making. Methods Nusinersen-related adverse reaction signals were mined using the reporting odds ratio (ROR), Proportional Reporting Ratio (PRR), and Bayesian Confidence Propagation Neural Network (BCPNN), Multi-item Gamma-Poisson Shrinker (MGPS) models with Empirical Bayesian Geometric Mean (EBGM). The rate and frequency of reported adverse reactions were investigated. Results Nusinersen-induced adverse events were observed in 25 system organ categories (SOCs). A total of 230 disproportionate preferred terms (PTs) were eliminated using four algorithms. Cardiac arrest, autism spectrum disorder, and epilepsy emerged as potential new side effects not previously listed, warranting further attention for drug safety. Analysis of the age distribution of the signals found that younger patients should be watched out for upper respiratory tract infections and increased CSF pressure; senior patients should be extensively checked for symptoms of post-lumbar puncture syndrome and protein urine present. Conclusions Our investigation discovered potential signals of novel adverse drug events that could support clinical monitoring and risk identification of Nusinersen. However, these results should be interpreted with caution.

Study of observed changes in the first harmonic amplitude of the daily precipitation amount series in the territory of Russia

Using the data from weather observation stations, an assessment of the statistical significance of the first harmonic amplitude of the average long-term daily precipitation amount series in Russia in 1961–2020 and their changes in 1991–2020 compared to 1961–1990 is made. It is shown that at most stations the first harmonic has a reliable value different from the noise, except for eleven stations in the southern regions of the European Part of Russia. It is revealed that, on average, there is a significant decrease in the first harmonic amplitudes of the daily precipitation series across Russia. An analysis of the spatial distribution of the studied quantities is performed and the presence of large areas with their homogeneous character is demonstrated.

Assessment of household insecticide-treated bed net ownership, utilization, and associated factors in Kersa Woreda, Jimma Zone, Southwest Ethiopia

BackgroundAn estimated 40% of the world’s population lives in malaria-prone areas, there are 300–500 million malaria episodes worldwide, and at least one million malaria fatalities occur each year which makes malaria is a major public health concern [1]. In sub-Saharan Africa, malaria claims the lives of about 90% of all people worldwide. Today, there is a growing interest in using ITNs as one of the leading strategies for the prevention and control of malaria. Many studies on ITN use and associated factors have shown that factors influencing ITN use differ from place to place, with very few similarities; specifically, there are no studies conducted in the study area on ITN ownership, utilization, or associated factors.MethodsA community-based cross-sectional study was conducted from April 2023 to June 2023. A multistage sampling technique was employed to recruit the study participants. From twenty Malaria kebeles, six kebeles were selected by the lottery method, and study households were selected by the systematic random sample technique. A total of 770 planned sample sizes were calculated by using a single population formula. A trained data collector was used to collect the data, and the data entry and analysis were performed with SPSS 27.0. Simple frequency distribution and descriptive analyses were performed to describe participants’ sociodemographic, ownership, and utilization. Bivariate and multivariate analyses were performed to determine associations between dependent and independent variables, with a p-value < 0.05 indicating statistical significance.ResultsData were collected from a total of 766 study participants, for a response rate of 99.5%. The majority (89%) of the respondents had at least one ITN, and 83.5% of the households reported sleeping under the ITN the night preceding the survey. Knowledge about ITN as a preventive agent for malaria [AOR 2.028, 95% CI: 1.010, 4.070], the presence of pregnant mothers in the household [AOR 4.373, 95% CI: 1.70, 11.203], willingness to buy ITN [AOR 2.106, 95% CI: 1.330, 3.335] and home visited by health extension workers [AOR 2.002, 95% CI: 1.228, 4.540] were identified as factors associated with ITN utilization by households.ConclusionITN ownership and utilization were 89% and 83.5%, respectively. Knowledge about the use of the ITN for preventing malaria, the presence of pregnant mothers in the household, willingness to buy the ITN, and home visits by HEW were identified as factors associated with ITN utilization. The ITN distribution for malaria cases and the mechanism for accessing the ITN in the market need to be considered by health authorities. Continuing to apply IEC/BCC interventions to increase the knowledge of the community on the ITN and of home visits and support the proper utilization of the ITN is highly important.

The fully bio-based bilayered flame retardant treatment for paper via natural bio-materials

In this paper, we report a novel method for enhancing the flame retardancy of wood-based paper by utilizing natural biomaterials. The research constructed a bilayered structure coating on paper fiber surfaces, incorporating mixed starch (MS), adenosine triphosphate (ATP), and phytic acid (PA) as natural bio-based flame retardants. The structural configuration of the coating comprises MS/ATP and MS/PA, which were sequentially assembled as bottom and top parts, respectively, through pneumatic spraying. The surface morphological features and elemental distribution analysis of treated paper indicated that bio-materials were successfully assembled, which resulted in a uniform flame retardant coating on the paper fiber surface. Compared to the untreated paper, the limiting oxygen index of 20 bilayers (BL) treated paper increased substantially from 19.07% to 24.00%, and the thermogravimetric analysis showed out the residual char yield enhanced from 23.80% to 38.10% under nitrogen atmosphere. The cone calorimeter test results of 20 BL treated paper have approximately a 50.00% reduction than the untreated paper in both peak and total heat release rates. During thermal exposure, the top and bottom parts of the bilayered structure coating are successively flame retarded prior to paper fiber degrading. The method presented in this paper provides an environmentally sustainable approach for producing flame retardant wood-based paper.

The Analysis of Hypo-Exponential and Hyper-Exponential Distributions in Solving Performance Measures for General Phase Type Distributions

The importance of phase-type distribution in modeling activities cannot be under emphasized when both a distribution's initial and second moments are accessible, or when the sequence of data points for computing moments is the information available. In continuous time process for an absorbing finite state Markov chain, the phase-type distribution can be thought of as the of the time until absorption, and it is widely used in queueing theories and other fields of applied probabilities. The common phase-type distributions are generalized Erlang, Coxian, Hypo-exponential, and Hyper-exponential distributions. In this study, performance measures of phase-type distribution using Hypo-exponential, and Hyper-exponential distributions have been looked into, in order to provide meaningful study into the probability function, mean, moment, variance, Laplace Stieltjes transform and squared coefficient of variation of phase type distribution. The study started by considering the tractability and memory less properties of exponential distribution, and since these properties are not enough, we examined the journey through a series of exponential phases to arrive at performance measures. Illustrative examples are demonstrated for various cases to arrive at various values for probability functions, Laplace Stieltjes transform, squared coefficient of variation, moment, mean and variance for the phase type distribution.

Sociocultural attitudes in the self-regulation of youth's ideas about the future

The article contains the results of the third stage of the study, revealing the stability and differentiating effect of habitus (mental and modern features of national character, life positions) and migration attitudes on defining the goals that are significant for the future of the country. Based on the comparative analysis of two-dimensional distributions using the χ² statistics, it was revealed that both habitus, ascending to mental traits (love of the fatherland, mercy and compassion, love of neighbor), traditional life positions (collectivism and selflessness), and habitus, genetically associated with modern traits of national character (the desire to defend human rights, openness to everything foreign), and an active life position are stable. Habitus with a traditional value basis sharply divides the expressed carriers of the attitude and those who deny its presence in their choice of goals. Traditional attitudes underlie the construction of a more definite subjective reality of the future than modern ones. The most obvious differentiating effect is recorded in the links between the attitude of love for the fatherland and the social significance of a strong family for the future of the country; love for one's neighbor, mercy and compassion, honor, dignity, selflessness and accessible qualified health care. The semantic content of these attitudes is converted into care for neighbors and empathy for those far away, mainly concerns the satisfaction of the vital needs of health and life. They are also joined by the modern attitude of defending human rights in relation to a comfortable living space as a parameter of the image of the future. The least stable in regulating ideas about the goals of the country's future were shown by the traditional attitude of suspicion towards foreigners and modern attitudes towards the country as a place of residence, demonstrative compassion, rational and pragmatic attitude towards others and individualism. In this case, unformed attitudes have a regulating effect, which explains their instability. The attitudes of young people towards emigration, compared to attitudes towards sedentarization and internal migration, are characterized by a devaluation of key socially significant goals and values (strong family, work, education), but greater support for an active civil society as the most complete expression of agency, the possibility of real influence on the political process and making political decisions.

Dynamically Switchable Multifunctional Device for Terahertz Application using Vanadium Dioxide and Graphene-Based Metasurface

Abstract In this article, a dynamically switchable and multifunctional metasurface is realized using a combination of vanadium dioxide (VO2) and graphene-based structures. The device can be tuned using the temperature transition property of vanadium dioxide from a wideband linear-to-circular polarization converter (LTCPC) to a wideband linear-to-linear cross polarization converter (LTLPC) and a dual-band absorber. The unit cell is designed with a gold-backed lossy-silicon dioxide (SiO2) substrate with a permittivity of 3.9, and the top metasurface layer is designed with a graphene-based dual triangle loaded split ring (DTLSR) and two stripes of vanadium oxide to cover the split partially. The proposed device can be used as a wideband LTCPC at normal temperature (298 K) from 1.43 THz to 2.85 THz, i.e., 66.35% fractional bandwidth (FBW). At temperatures greater than 341 K, VO2 exhibits metallic properties, and the structure functions as LTLPC from 1.82 THz to 3.31 THz (PCR ≥ 80%), i.e., 58.08 % FBW and maximum polarization conversion ratio (PCR) reported as high as 99.65 %. Furthermore, at this metallic condition, two absorption peaks are obtained at 1.22 THz and 3.30 THz with absorptivity of 93.5% and 100%, respectively. The device offers incident angle invariability up to 40° for LTCPC and up to 50° for LTLPC operation. Further insight into the mechanism of operation is developed using the surface current density and electric field distribution analysis. The advantage of the proposed metasurface over other similar structures is assessed with respect to multifunctional behavior, bandwidth, and stability under oblique incidence.&amp;#xD;

Assessment of Water and Soil Contamination and Land Cover Changes in the Spring Creek Bayou Watershed in Houston, Texas

Stormwater runoff and nutrient pollution are significant sources of water contamination that continue to grow in rural and suburban watersheds. The goal of this research is to analyze and evaluate the impact of urbanization and industrialization on suburban watersheds in southeast Texas. The objectives are to: (1) determine nutrient and heavy metal concentrations in soil and water samples along Spring Creek Bayou (SC), (2) analyze land cover changes over the last 30 years and (3) assess and evaluate socio-economic data within the watershed. The soil and water samples were collected from upstream, midstream and downstream locations in triplicate during the spring and fall seasons along the bayou. The samples were analyzed to determine chemical concentrations and Landsat 5, and eight imageries were used to derive thematic land cover maps. The soil and water chemical concentrations were interpolated to spatial maps for distribution analysis. The chemical analysis of water samples collected from SC Bayou revealed that N and P concentrations were at elevated levels that can pose a threat to water quality and aquatic organisms. Heavy metal concentrations of Zn were at elevated levels in water samples from the SC Bayou watershed. Land cover change patterns showed that high-vegetation surfaces decreased while low-vegetation surfaces increased slightly over the past three decades. The watershed experienced an increase in total population from 129,629 residents in 1990 to 389,977 residents in 2020. This research is important in improving our understanding on the impact of natural and human activities on suburban watersheds in the Greater Houston metropolitan region.

The main results of the research on the cultural layer of the Samarovsky Yam settlement (Khanty-Mansiysk)

In 2016, archaeological excavations were carried out for the first time in the settlement of Samarovsky Yam (Khanty-Mansiysk) directed by I.Yu. Chikunova. The cultural layers of the 17th–20th centuries have been studied. This publication introduces the information and materials obtained during the excavations, and the results of the analysis of fish remains. Evidence has been found of the great flood of 1771, which left a thick sterile layer. This layer separated the cultural deposits of the 18th century. Stratigraphic data, coupled with the analysis of distribu-tion of various finds of wood, leather, metal, and molded, pottery and glazed ceramic ware, make it possible, in support of archival data, to trace on specific material the economic structure and changes in the level of economy of the first Russian population of Samarovsky Yam. Archaeoichthyological material is also a valuable informative archaeological source. The fish remains helped to clarify the species, size, age, and time of catching fish in the past. The study of the fish bone and scale remains made it possible to establish that whitefish species predomi-nated in the net fishing of the population of the Samarovsky Yam.

Peranan Strategis Internet Dalam Pemasaran Global

The internet is not only a promotional tool, but also plays a key role in facilitating global distribution, cross-border communication, and in-depth data analysis. With its ability to reach consumers around the world through websites, social media and e-commerce platforms, the internet creates global connectivity that allows companies to capitalize on opportunities in international markets quickly and efficiently. The use of the internet is also shaping a new paradigm in customer interaction, enabling deep direct and real-time engagement between companies and consumers across different walks of life. This research was conducted using qualitative techniques. Through a qualitative approach, data is collected through literature studies and document analysis relevant to the theme of this research. The purpose of this work is to illustrate how the strategic role of the internet in global marketing not only changes the way businesses communicate, but also leads to strategic innovations to optimize brand presence, overcome cross-border challenges, and achieve success in an increasingly integrated global market.

Detecting influential observations in single-index Fréchet regression

Regression with random data objects is becoming increasingly common in modern data analysis. Unfortunately, this novel regression method is not immune to the trouble caused by unusual observations. A metric Cook’s distance extending the original Cook’s distances of Cook (1977) to regression between metric-valued response objects and Euclidean predictors is proposed. The performance of the metric Cook’s distance is demonstrated in regression across four different response spaces in an extensive experimental study. Two real data applications involving the analysis of distributions of COVID-19 transmission in the State of Texas and the analysis of the structural brain connectivity networks are provided to illustrate the utility of the proposed method in practice.

Adsorption and Diffusion of CH4, N2, and Their Mixture in MIL-101(Cr): A Molecular Simulation Study.

A comprehensive quantitative grasp of methane (CH4), nitrogen (N2), and their mixture's adsorption and diffusion in MIL-101(Cr) is crucial for wide and important applications, e.g., natural gas upgrading and coal-mine methane capturing. Previous studies often overlook the impact of gas molecular configuration and MIL-101 topology structure on adsorption, lacking quantitative assessment of primary and secondary adsorption sites. Additionally, understanding gas mixture adsorption mechanisms remains a research gap. To bridge this gap and to provide new knowledge, we utilized Monte Carlo and molecular dynamics simulations for computing essential MIL-101 properties, encompassing adsorption isotherms, density profiles, self-diffusion coefficients, radial distribution function (RDF), and CH4/N2 selectivity. Several novel and distinctive findings are revealed by the atomic-level analysis, including (1) the significance of C=C double bond of the benzene ring within MIL-101 for CH4 and N2 adsorption, with Cr and O atoms also exerting notable effects. (2) Density distribution analysis reveals CH4's preference for large and medium cages, while N2 is evenly distributed along pentagonal and triangular window edges and small tetrahedral cages. (3) Calculations of self-diffusion and diffusion activation energies suggest N2's higher mobility within MIL-101 compared to CH4. (4) In the binary mixture, the existence of CH4 can decrease the diffusion coefficient of N2. In summary, this investigation provides valuable microscopic insights into the adsorption and diffusion phenomena occurring in MIL-101, thereby contributing to a comprehensive understanding of its potential for applications, e.g., natural gas upgrading and selective capture of coal-mine methane.

Differential Regulation of Hyaluronan Synthesis by Three Isoforms of Hyaluronan Synthases in Mammalian Cells

Hyaluronan (HA) is one of the crucial components of the extracellular matrix in vertebrates and is synthesized by three hyaluronan synthases (HASs), namely HAS1, HAS2, and HAS3. The low expression level of HASs in normal keratinocytes and other various types of cells presents a recognized challenge, impeding biological and pathological research on their localization. In this study, the human proteins HAS1, HAS2, and HAS3 with fused maltose-binding protein (MBP) tags were successfully expressed at high levels and purified for the first time in HEK293F cells. The enzymatic properties of the three HAS proteins were further characterized and compared. A pulse-field gel electrophoresis analysis of the size distribution of the hyaluronan generated in vitro by the membrane proteins demonstrated that the three HAS isoforms generate HA polymer chains at different molecular masses. Kinetic studies demonstrated that the three HAS proteins differed in their catalytic efficiency and apparent Km values for the two substrates, UDP-GlcA and UDP-GlcNAc. Furthermore, the cellular hyaluronan secretion by the three isoenzymes was evaluated and quantified in the HEK 293T cells transfected with GFP-tagged HAS1-GFP, HAS2-GFP, and HAS3-GFP using an ELISA assay. These findings enhance our understanding of the membrane protein HASs in mammalian cells.

Insights into multi-scale structural evolution and dielectric response of poly(methyl acrylate) under pre-strain: A simulation study.

The structural evolution of dielectric elastomer induced by pre-strain is a complex, multi-scale process that poses a significant challenge to a deep understanding of the effect of pre-strain. Through simulation results, we identify the variation in the dielectric constant and multi-scale (electronic structure, molecular chain conformation, and aggregation structure) response of poly(methyl acrylate). As the pre-strain increases, the dielectric constant initially rises (below 200% pre-strain) and then declines (above 200% pre-strain). Analysis of the charge distribution, surface electrostatic potential, HOMO-LUMO bandgap, and electron density differences reveal that adjusting chain conformation appropriately could enhance polarity domain and electron polarization. The correlation between permittivity and segment dynamics of deformed molecules is explored, encompassing segment orientation, mean shift displacement, and diffusion coefficient. Following molecular chain orientation, the kinematic capability of the chain segment improves, which leads to an increase in the number and activity of effective dipoles and the enhancement of orientation polarization. Excessive stretching restricts the polymer molecular chain mechanically, reducing the number and activity of effective dipoles and negatively impacting electron polarization. The permittivity transitions from isotropic to anisotropic behavior when the system is subjected to strain. This study provides an interesting solution for research on multiscale responses and intrinsic mechanisms of pre-strain.

Assessing Habitat Suitability for the Invasive Species Lantana camara on Bali Island: A Model Using the Biodiversity and Climate Change Virtual Laboratory (BCCVL)

Indonesia, known for its high biodiversity, is threatened due to alien plants that invade local plant species in forest areas. West Bali National Park is overgrown with invasive exotic plants, such as Lantana camara L., known locally as the kembang telek. The research aims to predict the distribution of L. camara using species distribution models (SDMs) and analysis variable contribution in the model featured in the biodiversity climate change virtual laboratory (BCCVL) application. L. camara distribution prediction model in Bali used the Bioclim data input by identifying areas of low, medium, and high habitat suitability. Central mountainous regions, including parts of Buleleng, Jembrana, Bangli, Karangasem, and Tabanan, show the highest suitability. Response curves demonstrated the correlation between climate variables and occurrence probability, highlighting the specific condition of rainfall and temperature ranges favoring Lantana's growth. The model showed a reliable AUC value of 0.89, indicating realibility. Potential improvements through additional environmental parameters were suggested. While L. camara has some potential benefits as a medicinal plant in Balinese culture, its invasive nature poses significant threats to native ecosystems. The predictive map offers valuable insights for authorities to implement initiative-taking strategies for preventing and controlling Lantanas spread in vulnerable areas of Bali.

Soil pollution with heavy metals in the vicinity of coal-fired power plants in Taean and Seocheon, Chungnam Province, South Korea.

This study investigated the distributions of heavy metals (Cd, Cu, Hg, Ni, Pb, and Zn) in agricultural soils near coal-fired power plants in Taean and Seocheon, South Korea, considering wind direction and distance from the plants. Additionally, pollution assessment for these heavy metals was conducted using the geoaccumulation index (Igeo) and enrichment factor. Results showed that heavy metal concentrations in the studied soil samples were below Korean environmental criteria for agricultural soil (Cd: 4, Cu: 150, Hg: 4, Ni: 100, Pb: 200, and Zn: 300mg/kg). However, a significant proportion of samples exceeded average levels found in uncontaminated soils. Spatial distribution analysis revealed higher concentrations of Cd and Pb southwest of the Taean plant, influenced by prevailing northeast winds. In Seocheon, soils within 4km of the plant exhibited elevated levels of Cd and Ni, suggesting coal combustion as a potential contamination source. Pollution assessment indicated that Cd and Pb in soils near both thermal power plants were more enriched by artificial activity compared to agricultural soils in control areas. Sequential extraction results showed that heavy metals in soils within 4km of the Seocheon plant had higher proportions of exchangeable to organic-associated forms than soils beyond 4km, indicating a risk of high bioavailability near emission sources. This study highlights the significant impact of coal-fired power plant emissions on soil contamination, emphasizing the need for continuous monitoring and management. Environmental policies should consider wind patterns and proximity to emission sources to effectively mitigate contamination risks.

New Insights into Red and White Quinoa Protein Isolates: Nutritional, Functional, Thermal Properties

Quinoa (Chenopodium quinoa Willd.) seeds, renowned for their nutritional richness and balanced amino acid profile, offer promising potential as food ingredients. This study focused on extracting and characterizing the protein isolates from red and white quinoa varieties to evaluate their physicochemical and functional properties. Protein isolation involved alkaline solubilization and isoelectric precipitation, followed by characterization through amino acid analysis, phenolic profiling, scanning electron microscopy (SEM), zeta potential measurement, particle size distribution analysis, Differential Scanning Calorimetry (DSC), and rheological studies. The results showed that both the red and white quinoa protein isolates exhibited high protein content and essential amino acids, with notable differences in their amino acid compositions. The phenolic and flavonoid content varied between the red and white quinoa seeds, highlighting their potential antioxidant properties. SEM revealed distinct microstructural differences between the red and white quinoa protein isolates. Zeta potential measurements indicated the negative surface charges, influencing the stability in the solution. A particle size distribution analysis showed the monomodal distributions with minor variations in the mean particle size. The DSC profiles demonstrated multiple denaturation peaks, reflecting the complex protein compositions. Rheological studies indicated diverse gelation behaviors and mechanical properties. Overall, this comprehensive characterization underscores the potential of quinoa protein isolates as functional food ingredients with diverse applications in the food industry.

Spatial Distribution, Pollution Assessment, and Source Analysis of Soil Heavy Metals Under Different Land Use Types in the Southern Area of Laizhou Bay

To ascertain the status of the surface soil heavy metal pollution in the southern area of Laizhou Bay, 263 surface soil samples were collected from seven different land use types in the study area and the contents and pH of eight soil heavy metals （As, Cr, Ni, Cu, Zn, Cd, Pb, and Hg） were determined. The pollution assessment was carried out using the geo-accumulation index method, Nemerow comprehensive index method, and potential ecological risk index method. Then, the source of heavy metal pollution was discussed using correlation analysis and the source analysis was carried out through positive matrix factorization （PMF）. The results showed that the surface soil in the study area was weakly alkaline； As, Ni, Zn, and Hg slightly exceeded the background values of Weifang and the spatial distribution of heavy metals showed a trend of low in the north and high in the south. The results of the geo-accumulation index indicated that the study area was pollution free and the geo-accumulation index of different land types was arranged in the order of As&gt;Ni&gt;Zn&gt;Cr&gt;Pb&gt;Hg&gt;Cu&gt;Cd. The results of the Nemerow comprehensive pollution index indicated that the study area was lightly polluted and the Nemerow comprehensive pollution index of different land types was arranged in the order of town&gt;grassland&gt;forest&gt;agricultural land&gt;vegetable land&gt;industrial land&gt;mudflat. The results of the potential ecological risk index indicated that the study area belonged to low ecological risk and the potential ecological risk index of different land types was arranged in the order of agricultural land&gt;town&gt;forest land&gt;grassland&gt;vegetable land&gt;industrial land&gt;mudflat. The results of PMF analysis indicated that the heavy metal pollution sources in the study area mainly included natural sources, transportation sources, agricultural sources, and industrial sources, with contribution rates of 38.06%, 26.38%, 26.21%, and 9.35%, respectively.

Parents’ Perception of the Role of Sports in Supporting Psychological and Social Development in Children with Specific Learning Disorders

Background: This study aims to examine parents’ perceptions of how coach support influences the satisfaction of basic psychological needs (autonomy, competence, and relatedness) and its subsequent impact on the self-esteem and overall well-being of children with Specific Learning Disorders (SLDs) through participation in sports. Methods: The sample consisted of 1146 parents of children and young people diagnosed with SLDs from several European countries. The Coach Support Scale (COS), the Basic Psychological Needs Satisfaction Scale (BPNS), the Rosenberg Self-Esteem Scale (RSES), and the Sport Impact Scale (SIS) were used. Descriptive, reliability, Gaussian distribution, and ANOVA analyses were conducted. Results: The results show that increased sports participation is associated with higher perceptions of coach support, autonomy, competence, psychological need satisfaction, self-esteem, relatedness, and the positive impact of sports on the lives of children and adolescents with SLDs. Children and teenagers who engage in individual and team sports exhibit greater coach support, autonomy, competence, relatedness, BPNS, and self-esteem compared to those who participate in only one type of sport, with p-values ranging from 0.004 to 0.050. Conclusions: In conclusion, participation in sports seems to benefit the self-esteem and well-being of children and young people with SLDs. The practical applications of this study highlight the importance of specialized coach training to address the psychological needs of children with SLDs, the development of balanced sports programs that integrate individual and team activities to optimize benefits, the encouragement of parental involvement to enhance positive experiences, and the implementation of policies that support inclusive and adaptive sports practices.