scholarly journals Spatial function of light in staging of contemporary choreography

2021 ◽  
Vol 34 (01) ◽  
pp. 346-355
Author(s):  
Tatiana V. Portnova
Keyword(s):  
Ray Tracing ◽  
Practical Significance ◽  
Image Perception ◽  
Illumination Model ◽  
Spatial Function ◽  
Physical Laws ◽  
Polygonal Model

The principles of using light in choreographic performances are the basis of image perception integrity. The novelty of the study is determined by the fact that the illumination as a component of the performance can be based not only on the physical laws of light, but also on its imitation. To look into the matter of illumination, the authors consider it necessary to use a polygonal model, which can also form a spatial picture if necessary. The paper defines the general illumination model, which uses ray tracing technology and allows to determine the structure of lighting in the hall and to distribute the light to understand the director's intention among the entire visual sector. The practical significance of the study is determined by the structure of using lighting as part of staging choreography in the postmodern genre.

The Research and Application on Illumination Model Algorithm of Oilfield Virtual Reality System

2013 ◽  
Vol 842 ◽  
pp. 654-657
Author(s):  
Wen Zhen Wu ◽  
Kai Sun
Keyword(s):  
Virtual Reality ◽  
Ray Tracing ◽  
Global Illumination ◽  
Virtual Reality System ◽  
Illumination Model ◽  
Bounding Box ◽  
Model Mapping ◽  
Realistic Scenes ◽  
Model Algorithm

Realistic graphics for virtual reality system has been a hot research at home and abroad, the illumination model mapping and its application of the algorithms is one of the key level to achieve realistic scenes. This paper introduced the illumination model mapping and classification of the algorithms, focused on ray tracing algorithms and bounding box technology of the global illumination model which were realized in the oilfield virtual reality system and have been achieved good results.

scholarly journals DEVELOPMENT OF ARTISTIC ABILITIES OF CHILDREN OF SENIOR PRESCHOOL AGE IN THE PROCESS OF DRAWING

2021 ◽  
Vol 10 (34) ◽  
Author(s):  
V.V KARIKH ◽  
◽  
S.V BARHATOVA ◽  
Keyword(s):  
Preschool Children ◽  
Educational Institution ◽  
Diagnostic Procedures ◽  
Preschool Age ◽  
Practical Significance ◽  
Image Perception ◽  
Color Harmony ◽  
Low Degree ◽  
Artistic Image ◽  
Further Development

Objective: to identify the component features of artistic abilities of children in older preschool children. Methods: the complex of diagnostic procedures included a set of tasks developed by T. S. Komarova, N. P. Sakulina and focused on the assessment of each of the structural components of the artistic abilities of older preschool children (the ability to create an image (perception, manual skill), the ability to create an artistic image by design) allowed us to analyze the features of artistic abilities and outline the prospect of its further development, in terms of testing pedagogical conditions. Results: of the study revealed that most children of older preschool age are assigned to the low level of artistic abilities: there is a significant distortion of shape, proportion and color; the layout on the plot sheet is often broken, the compositional intent is absent, the image is static, the proportions of objects are not violated, color harmony is not expressed, 1-2 colors are used. They have difficulties in creating and implementing an artistic idea and its independent implementation, selecting means of artistic expression, a low degree of originality of the idea, and dissatisfaction with the. Scientific novelty: the dynamics and conditions for the development of the artistic abilities of modern preschool children are identified and characterized. Practical significance: methodological approaches to the development of visual abilities of older preschoolers in a preschool educational institution are presented.

A Fast Ray-Tracing Algorithm for X-Ray Imaging Simulation

2012 ◽  
Vol 198-199 ◽  
pp. 1361-1366
Author(s):  
Chao Fu ◽  
Ao Dong Shen ◽  
Li Min Luo
Keyword(s):  
Ray Tracing ◽  
3D Models ◽  
Practical Significance ◽  
Volume Data ◽  
X Ray ◽  
Natural Modes ◽  
X Ray Imaging ◽  
Imaging Simulation ◽  
Tracing Algorithm

X-ray radiography has more and more application value and X-ray simulation system has practical significance for improving the quality of X-ray imaging and replacing the expensive devices but it’s a time-consuming work. This paper proposes an improved fast ray-tracing method extended from Siddon’s and Zhao’s methods. For a 2D array, we compute level by level which has natural modes, by comparing the incident x-coordinate with the characteristic constant. In the case of 3D models, the volume data are back projected into 1D linked list and compute indices and lengths similarly like the case of 2D. Compared with Zhao’s method, the new method avoids skipping parametric planes and computing several starting voxels and ending voxels in one level. The time consumed in the new algorithm has reduced by 5/6 regarding the conventional Siddon’s algorithm.

Specimen Preparation for Clinical Applications of X-Ray Microanalysis

1990 ◽  
Vol 48 (2) ◽  
pp. 328-329
Author(s):  
J.D. Shelburne ◽  
G.M. Roomans
Keyword(s):  
Carbon Coating ◽  
Clinical Applications ◽  
Point Of View ◽  
Practical Significance ◽  
Sweat Test ◽  
Specimen Preparation ◽  
Tissue Preparation ◽  
X Ray ◽  
Gallbladder Stones ◽  
Clinical Problems

Proper preparative procedures are a prerequisite for the validity of the results of x-ray microanalysis of biological tissue. Clinical applications of x-ray microanalysis are often concerned with diagnostic problems and the results may have profound practical significance for the patient. From this point of view it is especially important that specimen preparation for clinical applications is carried out correctly.Some clinical problems require very little tissue preparation. Hair, nails, and kidney and gallbladder stones may be examined and analyzed after carbon coating. High levels of zinc or copper in hair may be indicative of dermatological or systemic diseases. Nail clippings may be analyzed (as an alternative to the more conventional sweat test) to confirm a diagnosis of cystic fibrosis. X-ray microanalysis in combination with scanning electron microscopy has been shown to be the most reliable method for the identification of the components of kidney or gallbladder stones.A quantitatively very important clinical application of x-ray microanalysis is the identification and quantification of asbestos and other exogenous particles in lung.

Collective Efficacy and Organizational Commitment in an Italian City Hall

2009 ◽  
Vol 14 (4) ◽  
pp. 363-371 ◽  
Author(s):  
Laura Borgogni ◽  
Silvia Dello Russo ◽  
Laura Petitta ◽  
Gary P. Latham
Keyword(s):  
Organizational Commitment ◽  
Collective Efficacy ◽  
Structural Equation ◽  
Structural Equation Models ◽  
Practical Significance ◽  
City Hall ◽  
Italian City ◽  
Public Sector Managers ◽  
The Individual ◽  
Level Group

Employees (N = 170) of a City Hall in Italy were administered a questionnaire measuring collective efficacy (CE), perceptions of context (PoC), and organizational commitment (OC). Two facets of collective efficacy were identified, namely group and organizational. Structural equation models revealed that perceptions of top management display a stronger relationship with organizational collective efficacy, whereas employees’ perceptions of their colleagues and their direct superior are related to collective efficacy at the group level. Group collective efficacy had a stronger relationship with affective organizational commitment than did organizational collective efficacy. The theoretical significance of this study is in showing that CE is two-dimensional rather than unidimensional. The practical significance of this finding is that the PoC model provides a framework that public sector managers can use to increase the efficacy of the organization as a whole as well as the individual groups that compose it.

Effect of Temperature on ADP-Induced Platelet Aggregation

1973 ◽  
Vol 29 (01) ◽  
pp. 183-189
Author(s):  
C. A Praga ◽  
E. M Pogliani
Keyword(s):  
Platelet Aggregation ◽  
Incubation Period ◽  
Room Temperature ◽  
Important Variable ◽  
Practical Significance ◽  
Effect Of Temperature ◽  
Induce Platelet Aggregation ◽  
Cuvette Holder ◽  
Exact Temperature

SummaryTemperature represents a very important variable in ADP-induced platelet aggregation.When low doses of ADP ( < 1 (μM) are used to induce platelet aggregation, the length of the incubation period of PRP in the cuvette holder of the aggregometer, thermostatted at 37° C, is very critical. Samples of the same PRP previously kept at room temperature, were incubated for increasing periods of time in the cuvette of the aggregometer before adding ADP, and a significant decrease of aggregation, proportional to the length of incubation, was observed. Stirring of the PRP during the incubation period made these changes more evident.To measure the exact temperature of the PRP during incubation in the aggre- gometer, a thermocouple device was used. While the temperature of the cuvette holder was stable at 37° C, the PRP temperature itself increased exponentially, taking about ten minutes from the beginning of the incubation to reach the value of 37° C. The above results have a practical significance in the reproducibility of the platelet aggregation test in vitro and acquire particular value when the effect of inhibitors of ADP induced platelet aggregation is studied.Experiments carried out with three anti-aggregating agents (acetyl salicyclic acid, dipyridamole and metergoline) have shown that the incubation conditions which influence both the effect of the drugs on platelets and the ADP breakdown in plasma must be strictly controlled.

Information technology for career guidance of creatively gifted university students

2020 ◽  
pp. 6-15
Author(s):  
S. A. Piyavsky ◽  
S. R. Kiryukov ◽  
A. S. Kuznetsov ◽  
G. A. Kulakov
Keyword(s):  
University Students ◽  
Career Guidance ◽  
Practical Significance ◽  
Structural Description ◽  
Joint Research ◽  
Research Activities ◽  
Information And Communication ◽  
System Functioning ◽  
Gifted Youth ◽  
Leading Enterprises

The article presents a structural description of the functioning of the regional information and communication system “Student and Labor” (SAL). This system is aimed at identifying and developing creatively gifted youth in the field of science, techniques and technology and is focused on the gradual involvement of university students in real work and interaction with leading enterprises in the region. The first cycle of the SAL system functioning is described, which has a complete character and has already led to a concrete result. The bank of information about the leading enterprises of the region that took part at the initial stage of the functioning of the SAL system were formed as well as the bank of 150 themes of scientific research for student projects, which were proposed by the enterprises themselves. All projects are focused on the practical significance of research for the enterprises themselves, as well as for students, their supervisors from universities and scientific consultants from enterprises that have embarked on joint research activities, which at the first stages are mostly of informational and educational nature. The Union of Employers of the Samara Region and the Council of Rectors of Universities in the Samara region are already taking the necessary measures to implement the described cycle of the functioning of the system SAL in the current academic year.

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