Research has shown that children with developmental coordination disorder rely more heavily on vision to perform movement skills than their typically developing peers. This study investigates the contribution of visual information during walking between typically developing (TD) children and children at risk of developmental coordination disorder (DCDR). Thirty-two children (21 boys and 11 girls, mean age: 8.9, SD: 0.9 years) were divided into two motor competence groups based on the Movement Assessment Battery for Children-second version. Participants walked along a 10-metre walkway, and their gait characteristics were recorded under four visual conditions: full vision, receiving vision for 150-ms and 100-ms within each 2 sec, and non-vision. Results indicated that TD children walked faster with longer steps and strides than DCDR children, irrespective of the visual condition. Time variables such as stance phase, single support, load response, and pre-swing were significantly different between TD and DCDR children. Additionally, the speed of walking and the step and stride length decreased significantly as occlusion time increased, regardless of motor competence level. The findings suggest that withdrawing and limiting visual information affects some gait cycle parameters differently in DCDR and TD children.

Five reaction schemes are suggested for the initiated nonbranched-chain addition of free radicals to the multiple bonds of unsaturated compounds. The proposed schemes include reactions competing with chain propagation reactions through a reactive free radical. The chain evolution stage in these schemes involves three or four types of free radicals. One of them is relatively low-reactive and inhibits the chain process by shortening the kinetic chain length. Based on the suggested schemes, nine rate equations (containing one to three parameters to be determined directly) are deduced using quasi-steady-state treatment. These equations provide good fits for the nonmonotonic (peaking) dependences of the formation rates of the molecular products (1:1 adducts) on the concentration of the unsaturated component in binary systems consisting of a saturated component (hydrocarbon, alcohol, etc.) and an unsaturated component (alkene, allyl alcohol, formaldehyde, or dioxygen). The unsaturated compound in these systems is both a reactant and an autoinhibitory generating low-reactive free radicals. A similar kinetic description is applicable to the nonbranched-chain process of free-radical hydrogen oxidation, in which oxygen, with the increase of its concentration, begins to act as an oxidation autoinhibitory (or an antioxidant). The energetics of the key radical-molecule reactions are considered.

Quorum sensing is a cell-to-cell communication mechanism mediated by chemical signals known as autoinducers. Once the concentration of these molecules surpasses a certain threshold, bacteria transition into an active or quorum state. In this study, we propose a mathematical model for quorum sensing systems and analyze this biological phenomenon through numerical simulations. We employ various computational methods, including Runge-Kutta and finite element methods, to simulate the behavior of Pseudomonas aeruginosa in batch culture. Our findings reveal the presence of a negative diffusion coefficient, which significantly influences the quorum sensing process.

In this study, the relationships between the life goals and personality traits of teachers are explored, with a focus on whether these life goals vary based on specific variables. Utilizing the Life Goals Scale (LGS) and the Quick Big Five Personality Test (QBFPT) as primary data collection instruments, significant positive correlations were identified between personality traits and life goals. Analysis via two-way ANOVA revealed that variables such as gender and marital status significantly impacted the intrinsic goals of teachers, with a notable interaction effect, F (1, 186) = 5.04, p = .026, η2 = .026. Additionally, for extrinsic goals, a significant interaction effect was observed concerning income perception and job dissatisfaction, with these variables jointly exerting a higher influence, F (3, 181) = 3.053, p = .030, η2 = .048.

Wireless Multimedia Sensor Networks (WMSNs) represent an advanced extension of traditional Wireless Sensor Networks (WSNs) by incorporating camera sensors alongside scalar sensors. These networks face challenges such as high processing and communication costs associated with multimedia data. A primary concern is data redundancy, mainly due to overlapping Fields of View (FoV) of camera sensors, which increases communication costs in terms of bandwidth and CPU processing. To mitigate this, camera sensors should only be activated when an event is detected within their range. Scalar sensors initially detect events and notify corresponding camera sensors. This paper proposes a cost-effective distributed actuation scheme that aims to minimize the number of active cameras while ensuring sufficient event coverage. The scheme encourages cooperation among camera sensors informed by scalar sensors about events, reducing coverage overlaps and ensuring their FoVs intersect with the event region. Additionally, the paper introduces low-cost distributed actuation methods for monitoring event boundaries. Simulations demonstrate the effectiveness of our approach, comparing coverage ratio and the number of activated camera sensors across various deployment strategies.

This study aims to evaluate the effectiveness of various soil preparation tools in influencing soil structure and plant development. Conducted during the 2015/2016 crop year at the Central Farm of the National High School of Agronomy, the research analyzed the impact of three agricultural tool chains: deep plowing, agronomic plowing, and no-till methods, on the establishment of durum wheat. Results indicated significant effects on soil moisture, porosity, and cone index, with deep plowing offering advantages in moisture retention and soil penetration resistance. Root density was enhanced in deeply plowed plots, while root diameter was optimal in no-till plots. Root elongation was most pronounced in agronomic plowing. The study concluded that root length and development are strongly influenced by soil parameters.

The study investigated the relationships between Hispanic students’ perceptions of instructors’ homophily and nonverbal immediacy behaviours and their perceptions of affective learning and content relevance. Utilizing convenience sampling, 141 Hispanic students completed a series of self-report scales. Multiple regression analysis found a significant relationship among these measures. Results further indicate that as students’ perceptions of immediacy and attitude homophily increased, perceptions of affective learning and content relevance were enhanced.

The nasopharynx, a concealed anatomical region, poses challenges for early nasopharyngeal carcinoma detection due to non-specific symptoms such as nasal congestion, epistaxis, cervical lymphadenopathy, mild hearing loss, headache, and tinnitus. These symptoms are often overlooked, leading to diagnoses at advanced stages and complicating treatment. This study evaluates the prevalence and specificity of these early symptoms, aiming to enhance awareness for timely diagnosis and intervention. Early detection could significantly improve treatment outcomes and survival rates, underscoring the importance of recognizing initial clinical presentations.

The System of Sensors for continuous and real-time measurement of soil strength utilizes an electronic circuit based on the Arduino Mega 2560. The setup includes an alphanumeric display, a keypad, a conditioning circuit for strain gauges, a Bluetooth module, two 2.4GHz RF Modules, two pressure sensors, four distance sensors, an electrical soil conductivity sensor, two rotation speed sensors, and a GPS unit. These components interface with an Android application designed to manage all calculations and decision-making processes. This system is mounted on a two-wheel drive tractor and employs mathematical models developed by researchers to link cone index, slip, and drawbar pull. The real-time data gathered provides valuable insights into soil conditions, significantly enhancing precision agriculture operations.

The aim of this study was to investigate the differences in defensive situational activity indicators between successful and less successful teams in elite men's handball. A total of 1848 matches from the Croatian men's Premier League were analyzed. The study focused on 15 variables related to goalkeeper and defensive player performance. Descriptive statistics were calculated for each variable, and univariate variance analysis was used to determine the statistical significance of differences between successful and less successful teams. The results demonstrated statistically significant differences in several areas, including the average number of goalkeeper's shot-stopping from wing positions, 7 meters, and 9 meters, as well as the efficiency percentages for these actions. Additionally, significant differences were observed in the average number of balls won by defense players and the average number of 7-meter throws executed by defense players. These findings provide insights into the key defensive factors that distinguish more successful teams in elite handball competitions.

This paper examines the wheat supply response in the Kurdistan region of Iraq using simple OLS models and the Nerlovian partial adjustment approach. The study provides estimates on wheat production, acreage, and productivity, exploring short-run and long-run elasticities and growth rates from 1990 to 2013. Production estimates are influenced by variables such as wheat prices, acreage, rainfall, seed prices, fertilizer, pesticides, fuel prices, and labor costs, along with a binary variable to account for the impact of war and economic blockades. Acreage supply includes lag variables and other parameters similar to those in production estimates. The productivity model also contains lag variables and shares common factors with the previous models. Statistical analyses reveal the significance of all variables at an alpha level of 0.10. The short-run and long-run supply elasticities are found to be 0.68% and 0.79%, respectively. Acreage elasticities are 0.46% in the short run and 0.84% in the long run. Productivity elasticities for short-run and long-run are 0.24% and 0.37%, respectively. The coefficient of adjustment for production, acreage, and productivity are 0.009%, -0.02, and 0.03%, respectively, indicating an annual production growth rate of less than 1%, which is very low. The negative acreage growth rate suggests a decline, possibly due to increased fertilizer and pesticide use, and rural migration to urban areas caused by war. Finally, the annual productivity growth rate shows a modest increase.

Methods for 3D imaging of cells and sub-cellular components, such as chromosomes, with and without additional laser irradiation, were developed and tested. The main goal of the study was to evaluate technologies for precise identification of changes in cellular components and compartments composed of biomolecules and intra-molecular structures, based on differences in their electron density. Unlike 2D images, 3D imaging allows for the observation of changes not only in volume rates due to absorption but also in the phase values of light passing through the observed objects. Despite the potential destructive effects of laser irradiation, this procedure could allow for the determination of the presence and localization of specific intra-cellular structures, depending on the exact location of the laser ray. Additionally, this approach provides initial information about the nature of bio-macromolecules within the composition of complex structures, which are important for basic cell functions and processes. These features could offer additional insights that might not be discernible when observing 2D objects.