Exploring the Nexus of Holography and Holophony in Visual Music Composition

2020 ◽  
Vol 30 ◽  
pp. 61-67
Author(s):  
Michael Rhoades

In this article the author explores the idea that, owing to their shared three-dimensional nature, holophons and virtual holograms are well suited as mediums for visual music composition. This union is ripe with creative opportunity and fraught with challenges in the areas of aesthetics and technical implementation. Squarely situated upon the bleeding edge of phenomenological research and creative practice, this novel medium is within reach. Here, one methodological pipeline is delineated that employs the convergence of holophony, virtual holography and supercomputing toward the creation of visual music compositions intended for head-mounted displays or large-scale 3D/360-degree projection screens and high-density loudspeaker arrays.

2020 ◽  
pp. 38-39
Author(s):  
Paula Arzillo ◽  
Marcus Vinicius Pereira

This theoretical-methodological research aims a final graduation paper in the Architectures and Urbanism bachelor’s degree program, which corresponds to an activity of synthesis and integration of skills developed throughout the course. Therefore, it is proposed to create a Project of an ephemeral architecture, which explores the perception and sensitivity of visitors, through the interactive experiences given by it. The theoretical basis searches architectural practices that relate innovative Technologies, and which materialize through an immersive exhibition, which explores interactivity with the visitors, in order to stimulate human senses – such as touch, smell, taste and hearing. For this, it is taken advantage of organic shape study, relating the concepts of biomimetic design and parametric design in order to demystify complex formulas through computer generated algorithms. The evolution process of the new digital tools brings an approximation of graphical representation with the real world. The complexity of the architectural technical representation, reached a parameter that becomes impossible without the computer software. In this context, parametric architecture is a technique developed from software, which has the ability to perform complex calculations, in a clear and effective way, allowing the creation of complex shapes that allow to expand the creative process until then, limited by technical characteristics. The Project called “Feelings, an immersive experience is made up of six distinct spaces, divides by rooms for temporary exhibitions at the Pinacoteca do Estado de São Paulo. The beginning of the Project route is given by the central octagon, where is thefirst installation that has a large scale, inspired by a spider web materialized through tensioned lycra fabric. The others rooms are based on the shape and characteristics of animals: 1) the Octopus tentacles, which stimulate the human touch, through holes in the Octopus suckers, that invite visitors to find out different textures; 2) butterfly cocoons shapes, containing aromas capsules, which stimulate the sense of smell; 3) silhouettes of marine jellyfish shelter the dripping system of a surprise flavor drop, which awaken the taste buds, sensory receptors of the tongue as sweet, bitter, salty, sours or umami; 4) the chameleon’s scalyskin, due to the ability to change colors, is taken to produce an interactive panel of lights that stimulates the sense of vision; 5) the structure of bird s taken to address the sense of hearing, by hiding speakers with sound effects that change according to the visitors interaction. All the structuring of these models used practices of digital architecture technologies. Finally, this research applies practical solutions based on three-dimensional graphic models for the representation of projects with complex shapes through intensive use of modeling, standing out for uniting concepts such as biomimetics and parametric in favor of the practice of innovative tools and still not so much explored in the Architecture and Urbanism course, promoting future research and expanding the repertoire within the area.


Author(s):  
Roman Grishin ◽  
Dmitriy Nesnov

This article describes the creation of a three-dimensional model of the overpressure sensor Metran-43 using the graphic editor COMPASS-v17, as well as photorealistic images in the program Artisan Rendering and created animation disassembly-Assembly of the device, allowing you to see the internal components of the product.


1994 ◽  
Vol 29 (3) ◽  
pp. 281-288 ◽  
Author(s):  
A. Siepe

The floodplain of the Upper Rhine and its biocoenoses have, through different river-regulatory activities over the last 175 years, undergone large scale degradation. At the same time flood protection for the downstream inhabitants has been greatly reduced. For reasons of flood protection, the “Polder Altenheim” in Baden-Württemberg, Germany southwest of Strasbourg, France, with so called retention flooding, was put into operation in 1987. The original floodplain had been diked for the previous 17 years, during which no flooding occurred. Since 1989 “ecological flooding” also is carried out. This has assisted in the regeneration of floodplain biotopes and promoted the floodplain biotic communities and the readaption of the bioceonosis to a regular flooding regime. The creation of new floodplain biotopes of early succession stages, particularly through geomorphodynamic processes, has followed the more than ten flood ocassions and typical biotic communities have colonised these sites. This will be presented together with selected examples of terrestrial and limnical species and communities. The following species and communities will be discussed: kingfisher Alcedo atthis, carabid communities (Coleoptera), the red alga Hildenbrandia rivularis (Rhodophyceae), the freshwater snail Theodoxus fluviatilis (Neritacea) and the freshwater bug Aphelocheirus aestivalis (Hydrocorisae).


Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1940
Author(s):  
Muhammad Usman Naseer ◽  
Ants Kallaste ◽  
Bilal Asad ◽  
Toomas Vaimann ◽  
Anton Rassõlkin

This paper presents current research trends and prospects of utilizing additive manufacturing (AM) techniques to manufacture electrical machines. Modern-day machine applications require extraordinary performance parameters such as high power-density, integrated functionalities, improved thermal, mechanical & electromagnetic properties. AM offers a higher degree of design flexibility to achieve these performance parameters, which is impossible to realize through conventional manufacturing techniques. AM has a lot to offer in every aspect of machine fabrication, such that from size/weight reduction to the realization of complex geometric designs. However, some practical limitations of existing AM techniques restrict their utilization in large scale production industry. The introduction of three-dimensional asymmetry in machine design is an aspect that can be exploited most with the prevalent level of research in AM. In order to take one step further towards the enablement of large-scale production of AM-built electrical machines, this paper also discusses some machine types which can best utilize existing developments in the field of AM.


2021 ◽  
Vol 104 (1) ◽  
pp. 003685042098705
Author(s):  
Xinran Wang ◽  
Yangli Zhu ◽  
Wen Li ◽  
Dongxu Hu ◽  
Xuehui Zhang ◽  
...  

This paper focuses on the effects of the off-design operation of CAES on the dynamic characteristics of the triple-gear-rotor system. A finite element model of the system is set up with unbalanced excitations, torque load excitations, and backlash which lead to variations of tooth contact status. An experiment is carried out to verify the accuracy of the mathematical model. The results show that when the system is subjected to large-scale torque load lifting at a high rotating speed, it has two stages of relatively strong periodicity when the torque load is light, and of chaotic when the torque load is heavy, with the transition between the two states being relatively quick and violent. The analysis of the three-dimensional acceleration spectrum and the meshing force shows that the variation in the meshing state and the fluctuation of the meshing force is the basic reasons for the variation in the system response with the torque load. In addition, the three rotors in the triple-gear-rotor system studied show a strong similarity in the meshing states and meshing force fluctuations, which result in the similarity in the dynamic responses of the three rotors.


2021 ◽  
Vol 62 ◽  
pp. 142-157
Author(s):  
James Rogers ◽  
Amanda Müller ◽  
Frank E. Daulton ◽  
Paul Dickinson ◽  
Cosmin Florescu ◽  
...  
Keyword(s):  

2020 ◽  
Vol 501 (1) ◽  
pp. L71-L75
Author(s):  
Cornelius Rampf ◽  
Oliver Hahn

ABSTRACT Perturbation theory is an indispensable tool for studying the cosmic large-scale structure, and establishing its limits is therefore of utmost importance. One crucial limitation of perturbation theory is shell-crossing, which is the instance when cold-dark-matter trajectories intersect for the first time. We investigate Lagrangian perturbation theory (LPT) at very high orders in the vicinity of the first shell-crossing for random initial data in a realistic three-dimensional Universe. For this, we have numerically implemented the all-order recursion relations for the matter trajectories, from which the convergence of the LPT series at shell-crossing is established. Convergence studies performed at large orders reveal the nature of the convergence-limiting singularities. These singularities are not the well-known density singularities at shell-crossing but occur at later times when LPT already ceased to provide physically meaningful results.


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