Contact improvisation in the context of social dance of the XX century: features of the open dance form "jam"

Contact improvisation in the context of social dance of the XX century: features of the open dance form "jam" The purpose of the article is to reveal the features of contact improvisation as a practice of social dance of the XXI century and to determine the specifics of its implementation in the unique dance form "jam". Research methodology. A comprehensive method of studying the features of contact improvisation in the context of a social dance of the XXI century, a historical method, thanks to which the details of the development of contact improvisation have been clarified; the method of functional and systems analysis, which contributed to the study of contact improvisation as a unique hybrid practice; a phenomenological method that helped to highlight the essential features and identify the key elements of contact improvisation in the dance form "jam", etc. The scientific novelty consists in expanding the theoretical basis for analyzing the phenomenon of contact improvisation; clarifying the concept of "contact improvisation"; the features of the practice of contact improvisation in the context of the specificity of social dance are investigated on the basis of the analysis of its physical and mental components; analyzed the main elements of contact improvisation (inaction, weighing/carrying, falling, playing, discussing, observing, touching) through the prism of the unique open dance form "jam". Conclusions. Contact improvisation is based on communication between two moving bodies that are in physical contact, and the cumulative relationship of physical laws governing their motion - the laws of gravity, momentum, and inertia. In accordance with the specifics of social dance, contact improvisation is a tool for studying one's own capabilities, a model of human relations and meditative practice, which creates the preconditions for further development, providing a huge space of freedom and ease of performance of one or another dance element, removes the restrictions imposed by choreography, allows you to move like this, as the dancer wants, without tension, provides new material for self-knowledge and exploration of relationships, is a source of inspiration and a way of expressing the creative energy that is in the body. Contact improvisation, as a hybrid practice, works at the crossroads between body meditation, psycho-kinesthetic therapy, sports training, and dance improvisation and, in the context of the specifics of social dance, is implemented at improvisational meetings of contactees, the so-called jams, at the local and national level. Keywords: contact improvisation, social dance, jams, dance practice, dance form.

Development of a virtual reality simulator replacingthe check valve on christmas tree

The article describes the process of designing and creating a software environment that allows in automatic mode to create a realistic landscape. A review of existing approaches to landscape generation is carried out, which have a set of disadvantages taken into account when developing a software environment. A diagram of components and main classes is described. The developed subroutine that implements the polygon mesh generation algorithm provides an interface for creating and editing a mesh of hexagons on a plane, used for simplified work with biomes, as well as detailing the boundaries of polygons to give the landscape elements of randomness and, as a result, realism. The process uses the Diamond Square noise generation algorithm. The docking algorithm is designed to reduce the gaps between the heights of different biomes. The erosion algorithm uses particles generated on a height mapto carry soil particles in accordance with physical laws. The user interface of the application and the results of the algorithms are presented.

Remote Sensing of solar surface radiation – A reflection of concepts, applications and input data based on experience with the effective cloud albedo

Accurate solar surface irradiance data (SSI) is a prerequisite for efficient planning and operation of solar energy sys- tems. Respective data are also essential for climate monitoring and analysis. Satellite-based SSI has grown in importance over the last few decades. However, a retrieval method is needed to relate the measured radiances at the satellite to the solar surface irradiance. In a widespread classical approach, these radiances are used directly to derive the effective cloud albedo (CAL) as basis for the estimation of the solar surface irradiance. This approach has been already introduced and discussed in the early 1980s. Various approaches are briefly discussed and analyzed, including an overview of open questions and opportunities for improvement. Special emphasis is placed on the reflection of fundamental physical laws and atmospheric measurement tech- niques. In addition, atmospheric input data and key applications are briefly discussed. It is concluded that the well established observational-based CAL approach is still an excellent choice for the retrieval of the cloud transmission. The coupling with Look-Up-Table based clear sky models enables the estimation of solar surface irradiance with high accuracy and homogeneity. This could explain why, despite its age, the direct CAL approach is still used by key players in energy meteorology and the climate community. For the clear sky input data it is recommended to use ECMWF forecast and reanalysis data.

A Life of Biophysics

Biophysics is a way of approaching biological problems through numbers, physical laws, models, and quantitative logic. In a long scientific career, I have seen the formation and fruition of the ion channel concept through biophysical study. Marvelous discoveries were made as our instruments evolved from vacuum tubes to transistors; computers evolved from the size of an entire building to a few chips inside our instruments; and genome sequencing, gene expression, and atom-level structural biology became accessible to all laboratories. Science is rewarding and exhilarating. Expected final online publication date for the Annual Review of Biophysics, Volume 51 is May 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Reassessment of the Concept of Momentum in Econophysics

We examine the most basic feature of the economic process - momentum - under the point of view of analogies with physical laws, as they were reformulated recently [1]. Our approach is applied with minimal assumptions and we conclude that the inclusion of entropy as an effective variable in econophysics may bring a new vision of economic progress and the possibility to harness economic waves as a means to transport development from rich to poor countries using trade and technological progress. A new technical indicator for the stock market is proposed offering double opportunities on enter and exit trades, when compared to the Relative Strength Index usually used in analysis of financial markets.

In free fall—the question

In free fall objects seem to behave as if the physical laws of gravity have been suspended. Here are some experiments which demonstrate the phenomenon, and test the imagination.

GALILEO GALILEI´S THESIS EXPANDED

In this short article, I try to show alternative maths to real numbers in such a way that these maths (especially Transreal Numbers by James Anderson and Arithmetic of Infinity by Yaroslav Sergeyev) can also be considered as legitimate instruments for presenting the structure of reality. I call this thesis of expanding the possibilities of understanding Nature mathematically the "Galileo Galilei´s thesis extended". As an example of the application of the thesis that the mathematics that is at the base of Nature must be extended to a better assessment of the scope of physical laws, here we present the Heisenberg´s Uncertainty Principle, approached in an alternative way from a mathematical point of view.

Investigation of a novel method for improving hemodynamics of Fontan circuit using an experimental model

Background: The study objective was to test underlying physical laws behind a proposed novel device for failing Fontan and investigate whether the device could be implemented theoretically to improve hemodynamics in failing Fontan circulation. Methods: A 4-arm setup was designed and fabricated to simulate an actual Fontan circuit in the form of a junction of the superior and inferior vena cavae (SVC, IVC) with the right and left pulmonary arteries (RPA, LPA). A provision for placement of an oscillating ball along the RPA-LPA path to push fluid away from SVC and IVC was created. The rate of ball oscillations and initial pressure of fluid on SVC and IVC limbs were varied. The pressure-drop times in the vena cavae limbs were measured at varying ball oscillations and resistances in the RPA-LPA pathway. The test was considered positive if increasing oscillations of the ball allowed for quicker pressure drop in the SVC and IVC limbs indicating quicker discharge of fluid through the RPA and LPA. 48 different experiments were conducted to simulate different physical conditions and the results were plotted and analyzed to draw a conclusion. Results: The time required for pressure drop in the experiment without ball was the least across all set of readings. This meant that placing an oscillating ball along the RPA -LPA path created obstruction to flow rather than enhance it. Increasing rate of ball oscillations increased degree of obstruction to flow. Conclusion: The proposed interventional method is unsuitable for improving hemodynamics in failing Fontan circulation.

A new hybridization filtering-based linear-nonlinear models for time series forecasting

In recent years, the idea of using a mathematical model to describe the behavior of physical phenomena has been very much considered. Specifically, a definitive model, based on physical laws, enables researchers to calculate the number of time dependencies precisely at any moment in time. However, in the real world, we often face time-dependent phenomena with many unknown or unavailable factors (Lindley, 2010; Roulston et al., 2003). In this case, when it is not possible to achieve a definite - model, the prediction methods are wide used, especially when the past observations of a variable and primary relationships between specific observations are available. Forecasting methods that are used in different fields of science can be categorized based on various aspects. For example, the prediction methods used in the field of wind energy can be divided into four categories of 1) ultra short term (several seconds to four hours), 2) short term (4 to 24 hours), 3) medium-term (1 to 7 days), and 4) long term (more than 7 days) (Zack, 2003; Soman et al., 2010). Also, the structure of forecasting methods can be divided into two types of 1) single methods and 2) hybrid methods. Each of these categories can also be subdivided into smaller subgroups.