Computer modeling of differential games

This paper uses differential games for viewing with simple movement and gives examples of viewing processes. The software has been developed and computer modeling of several methods of interaction in a conflict-driven environment has been introduced.

Machine Actuated Craft

<p>Throughout history the use of scale representations has been important in the process of creating architecture. In recent times the introduction of computer-aided design (CAD) has significantly altered traditional methods of conceptual design representation, mainly through a shift from the physical to the virtual. The aim of the research is to explore the relationship between computer aided manufacturing (CAM) and the methods for extracting and producing qualities of a conceptual nature from computer and numerically controlled (CNC) machine, and how this could advance conceptual creativity formulating in buildable form. The qualities that are inherently produced by CNC machining processes are then captured back into the three-dimensional environment (CAD), and then re-exported via CNC machining. The information that flows from the digital to the physical and then back again, creates new physical qualities that would not normally be produced, and allows for further investigation. Through the misrepresentation and reinterpretation of machine processes in this research, the output produces an object of an abstract nature created through identifying extraordinary expressions of tool paths. This 1:1 abstract object expresses qualities of craft produced by the CNC machine and creates a new form of craft that can be compared to the expression of the traditional craftsman and their trade. This simple movement between scales and formats begins to generate new design processes that in turn translate the conceptual expression of the object into a buildable form. On final completion of the object this project has proven that CAM conceptual creativity can be translated and formulated into built form. A key observation of this research is that identifying CAM production techniques can produce abstract representation through a new means of design representation.</p>

Machine Actuated Craft

<p>Throughout history the use of scale representations has been important in the process of creating architecture. In recent times the introduction of computer-aided design (CAD) has significantly altered traditional methods of conceptual design representation, mainly through a shift from the physical to the virtual. The aim of the research is to explore the relationship between computer aided manufacturing (CAM) and the methods for extracting and producing qualities of a conceptual nature from computer and numerically controlled (CNC) machine, and how this could advance conceptual creativity formulating in buildable form. The qualities that are inherently produced by CNC machining processes are then captured back into the three-dimensional environment (CAD), and then re-exported via CNC machining. The information that flows from the digital to the physical and then back again, creates new physical qualities that would not normally be produced, and allows for further investigation. Through the misrepresentation and reinterpretation of machine processes in this research, the output produces an object of an abstract nature created through identifying extraordinary expressions of tool paths. This 1:1 abstract object expresses qualities of craft produced by the CNC machine and creates a new form of craft that can be compared to the expression of the traditional craftsman and their trade. This simple movement between scales and formats begins to generate new design processes that in turn translate the conceptual expression of the object into a buildable form. On final completion of the object this project has proven that CAM conceptual creativity can be translated and formulated into built form. A key observation of this research is that identifying CAM production techniques can produce abstract representation through a new means of design representation.</p>

The possibility to apply the Frenet trihedron and formulas for the complex movement of a point on a plane with the predefined plane displacement

Material particles interact with the working moving surfaces of machines in various technological processes. Mechanics considers a technique to describe the movement of a point and decompose the speed and acceleration into single unit vectors of the accompanying trajectory trihedron for simple movement. The shape of the spatial curve uniquely sets the movement of the accompanying Frenet trihedral as a solid body. This paper has considered the relative movement of a material particle in the static plane of the accompanying Frenet trihedron, which moves along a flat curve with variable curvature. Frenet formulas were used to build a system of differential equations of relative particle movement. In contrast to the conventional approach, the chosen independent variable was not the time but the length of the arc of the guide curve along which the trihedron moves. The system of equations has been built in the projections onto the unit vectors of the moving trihedron; it has been solved by numerical methods. The use of the accompanying curve trihedron as a moving coordinate system makes it possible to solve the problems of the complex movement of a point. The shape of the curve guide assigned by parametric equations in its length function determines the portable movement of the trihedron and makes it possible to use Frenet formulas to describe the relative movement of a point in the trihedron system. This approach enables setting the portable movement of the trihedron osculating plane along a curve with variable curvature, thereby revealing additional possibilities for solving problems on a complex movement of a point at which rotational motion around a fixed axis is a partial case. The proposed approach has been considered using an example of the relative movement of cargo in the body of a truck moving along the road with a curvilinear axis of variable curvature. The charts of the relative trajectory of cargo slip and the relative speed for the predefined speed of the truck have been constructed

Handedness effects on motor imagery during kinesthetic and visual-motor conditions

Recent studies show that during a simple movement imagery task, the power of sensorimotor rhythms differs according to handedness. However, the effects of motor imagery perspectives on these differences have not been investigated yet. Our study aimed to check how handedness impacts the activity of alpha (8–13 Hz) and beta (15–30 Hz) oscillations during creating a kinesthetic (KMI) or visual-motor (VMI) representation of movement. Forty subjects (20 right-handed and 20 left-handed) who participated in the experiment were tasked with imagining sequential finger movement from a visual or kinesthetic perspective. Both the electroencephalographic (EEG) activity and behavioral correctness of the imagery task performance were measured. After the registration, we used independent component analysis (ICA) on EEG data to localize visual- and motor-related EEG sources of activity shared by both motor imagery conditions. Significant differences were obtained in the visual cortex (the occipital ICs cluster) and the right motor-related area (right parietal ICs cluster). In comparison to right-handers who, regardless of the task, demonstrated the same pattern in the visual area, left-handers obtained higher power in the alpha waves in the VMI task and better performance in this condition. On the other hand, only the right-handed showed different patterns in the alpha waves in the right motor cortex during the KMI condition. The results indicate that left-handers imagine movement differently than right-handers, focusing on visual experience. This provides new empirical evidence on the influence of movement preferences on imagery processes and has possible future implications for research in the area of neurorehabilitation and motor imagery-based brain–computer interfaces (MI-BCIs).

“I Like the Way You Move”: Validating the Use of Point-Light Display Animations in Virtual Reality as a Methodology for Manipulating Levels of Sexualization in the Study of Sexual Objectification

Sexual objectification of others has seen a growing research interest in recent years. While promising, the field lacks standardized stimuli, resulting in a confusion between sexualization and sexual objectification, which limits the interpretability of published results. In this study, we propose to use point-light display (PLD) as a novel methodology for manipulating sexualization levels as a first step toward isolating movement from other visual cues (e.g., clothing or physical appearance) for studying effects of sexual objectification of others. To do so, we first developed 8 virtual reality animations varying on 3 dimensions: 1) nature of movement (dance vs. walk), 2) level of sexualization (low vs. high), and 3) animation speed (slow and fast). Then, we validated these stimuli with perception ratings from 211 participants via an online survey. Using mixed linear regression models, we found evidence that our manipulation was successful: while participants took longer, were less accurate, and less confident in their response when confronted with a dancing, sexualized PLD, they also rated it as significantly more sexualized. This latter effect was stronger for participants perceiving a woman dancing compared to participants who perceived other genders. Overall, participants who reported more frequent sexual objectification behaviors also perceived the animations as more sexualized. Taken together, these results suggest that sexual suggestiveness can be manipulated by rather simple movement cues, thus validating the use of PLD as a stepping stone to systematically study processes of sexual objectification. From there, it is now possible to manipulate other variables more precisely during immersions in virtual reality, whether by adding a skin to the animated skeleton, by situating the PLD into different context, by varying the amplitude and the nature of the movements, or by modifying the context of the virtual environment.

A study on the dynamic process of fluid mud and its effect on siltation in the Yangtze Estuary Deepwater Channel

&lt;p&gt;The Yangtze Estuary Deepwater Channel Project has brought great economic and social benefits since its completion, but the siltation problem is still worthy of attention. In order to investigate the mechanisms of fluid mud in the estuary and to study the influence of fluid mud on siltation in the Yangtze Estuary Deepwater Channel, a two-dimensional physically-enhanced two-layer flow model will be developed in this paper. The model includes two series of governing equations which are about environment fluid and fluid mud, respectively. The model is based on the unstructured grid, and the governing equations are discretized by the finite volume method, and the improved LTS/GMaTS technology is used to improve the computational efficiency. Firstly, an experiment that the fluid mud was flowing underwater along a gentle slope is reconstructed by the two-layer model. It shows the ability of the model to describe the simple movement of fluid mud. Secondly, the model is applied to Yangtze Estuary. Without the fluid mud layer, the model can be simplified as a tide-current model. The reliability of the tidal current and tide level is verified, and it means the model can describe the tide accurately. Based on this, the process of formation, transport, and break-down of fluid mud is simulated and its effect on the siltation in the Yangtze Estuary Deepwater Channel is estimated.&lt;/p&gt;

The Associations between Physical Fitness, Complex vs Simple Movement, and Academic Achievement in a Cohort of Fourth Graders

This study analyzed the correlation between elementary school students’ body composition, physical activity, physical fitness, movement ability, and academic achievement. Movements ranged from simple actions to complex movements requiring executive functioning. In total, 110 fourth graders (60 boys, 50 girls) participated in this experiment. Body composition (BMI, % of body fat), physical activity (pedometer), physical fitness (muscular strength, endurance, power, flexibility, and VO2max), and complex movement abilities (Illinois Agility test, soda pop hand test, and soda pop foot test) were measured. Regression modeling of body composition and fitness/activity variables was able to account for 30.5% of the variation of total academic scores in females, but only 4.3% in males. No individual tests were reliably correlated with multiple academic outcomes in males. However, hand and foot soda pop times, as well as Illinois Agility scores, were repeatedly correlated with academic outcomes in females, each correlating with 4 of the 6 academic scores. Body composition and physical activity level did not correlate with academic achievement, and simple physical fitness showed a low correlation with academic achievement in both boys and girls. On the other hand, complex, cognitively demanding movements such as the Illinois Agility, soda pop hand, and soda pop foot tests had consistent correlations with academic achievement in girls, but not in boys.

Theatricalization as a way to study the cultural space of an ethnic group

We consider the issue of the theatricalization concept and its role for a general cultural space understanding of an ethnic group, in terms of basic cultural concepts. We point out the main tasks that the theatricalization method should perform. The interrelation is traced from a simple movement in the mimes’ face to a theatrical performance complex in composition, often asso-ciated with a huge number of effects. We focus on the fact that theatricalization helps to form an associative perception of ethnocultural reality. We prove that due to this phenomenon, immersion in ethnocultural reality acquires a meaningful character and contributes to development of peculiar idea of people’s cultural code. We provide examples, accompanied by illustrative material, confirming the fact that not only small theatrical forms, but also integral theatrical performances contribute to the creation of a holistic picture of the cultural code of an ethnic group, and direct tactile perception once again helps in this process. In addition, it is substantiated that this method also contributes to the implementation of intercultural communication. We conclude that theatricalization combines both art and other types of activity that contribute to a faster, easier, and most importantly, a intimate understanding of the cultural space of a particular ethnic group.