13 results on '"kinetic structure"'
Search Results
2. Novel component for smart sustainable. Building Envelopes
- Author
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Gianluca Rodonò, Angelo Monteleone, and Vincenzo Sapienza
- Subjects
Composite material ,Smart envelope ,Foldable surface ,Kinetic structure ,Building integrated photovoltaics ,Aesthetics of cities. City planning and beautifying ,NA9000-9428 ,Architectural drawing and design ,NA2695-2793 - Abstract
Contemporary approaches to the topic of the responsiveness of architectural components tend to simplify the moving parts as much as possible, avoiding the use of complex mechanisms. KREO is a component for lightweight responsive envelopes made with a composite material with elastic matrix and a textile reinforcement. The composite is pre-folded and it is possible to fold and unfold it without hinges through its elastic mechanism. The component is also capable of producing energy for its handling system through an integrated high efficiency photovoltaic system. Furthermore, its pre-folded geometry ensures its strength. This research involves the construction of a prototype of this energy self-sufficient kinetic component and the definition of its production process.
- Published
- 2021
- Full Text
- View/download PDF
3. Novel component for smart sustainable. Building Envelopes.
- Author
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Rodonò, Gianluca, Monteleone, Angelo, and Sapienza, Vincenzo
- Subjects
BUILDING envelopes ,BUILDING-integrated photovoltaic systems ,MANUFACTURING processes ,COMPOSITE materials ,KINETIC energy ,PHOTOVOLTAIC power systems - Abstract
Contemporary approaches to the topic of the responsiveness of architectural components tend to simplify the moving parts as much as possible, avoiding the use of complex mechanisms. KREO is a component for lightweight responsive envelopes made with a composite material with elastic matrix and a textile reinforcement. The composite is pre-folded and it is possible to fold and unfold it without hinges through its elastic mechanism. The component is also capable of producing energy for its handling system through an integrated high efficiency photovoltaic system. Furthermore, its pre-folded geometry ensures its strength. This research involves the construction of a prototype of this energy self-sufficient kinetic component and the definition of its production process. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
4. On Magnetosheath Jet Kinetic Structure and Plasma Properties
- Author
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Raptis, Savvas, Karlsson, Tomas, Vaivads, Andris, Lindberg, Martin, Johlander, Andreas, Trollvik, Henriette, Raptis, Savvas, Karlsson, Tomas, Vaivads, Andris, Lindberg, Martin, Johlander, Andreas, and Trollvik, Henriette
- Abstract
High-speed plasma jets downstream of Earth's bow shock are high velocity streams associated with a variety of shock and magnetospheric phenomena. In this work, using the Magnetosphere Multiscale mission, we study the properties of a jet found downstream of the Quasi-parallel bow shock using high-resolution (burst) data. By doing so, we demonstrate how the jet is an inherently kinetic structure described by highly variable velocity distributions. The observed distributions show the presence of two plasma population, a cold/fast jet and a hotter/slower background population. We derive partial moments for the jet population to isolate its properties. The resulting partial moments appear different from the full ones which are typically used in similar studies. These discrepancies show how jets are more similar to upstream solar wind beams compared to what was previously believed. Finally, we explore the consequences of our results and methodology regarding the characterization, origin, and evolution of jets., Not duplicate with DiVA 1706147QC 20230614
- Published
- 2022
- Full Text
- View/download PDF
5. Adaptive kinetic structural behavior through machine learning: Optimizing the process of kinematic transformation using artificial neural networks.
- Author
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KONTOVOURKIS, ODYSSEAS, PHOCAS, MARIOS C., and LAMPROU, IFIGENIA
- Subjects
- *
ADAPTIVE control systems , *MACHINE learning , *KINEMATICS of machinery , *ARTIFICIAL neural networks , *STRUCTURAL design , *MATHEMATICAL transformations - Abstract
Nowadays, on the basis of significant work carried out, architectural adaption structures are considered to be intelligent entities, able to react to various internal or external influences. Their adaptive behavior can be examined in a digital or physical environment, generating a variety of alternative solutions or structural transformations. These are controlled through different computational approaches, ranging from interactive exploration ones, producing alternative emergent results, to automate optimization ones, resulting in acceptable fitting solutions. This paper examines the adaptive behavior of a kinetic structure, aiming to explore suitable solutions resulting in final appropriate shapes during the transformation process. A machine learning methodology that implements an artificial neural networks algorithm is integrated to the suggested structure. The latter is formed by units articulated together in a sequential composition consisting of primary soft mechanisms and secondary rigid components that are responsible for its reconfiguration and stiffness. A number of case studies that respond to unstructured environments are set as examples, to test the effectiveness of the proposed methodology to be used for handling a large number of input data and to optimize the complex and nonlinear transformation behavior of the kinetic system at the global level, as a result of the units’ local activation that influences nearby units in a chaotic and unpredictable manner. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
6. Ion distribution functions in magnetotail reconnection: Global hybrid-Vlasov simulation results
- Author
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Yann Pfau-Kempf, Minna Palmroth, Urs Ganse, Sanni Hoilijoki, Andrei Runov, Markus Battarbee, Maxime Grandin, Emilia Kilpua, Lucile Turc, Drew Turner, Sergio Toledo-Redondo, Heli Hietala, Particle Physics and Astrophysics, Space Physics Research Group, Department of Physics, and Doctoral Programme in Particle Physics and Universe Sciences
- Subjects
DYNAMICS ,Atmospheric Science ,TAIL RECONNECTION ,010504 meteorology & atmospheric sciences ,Science ,QC1-999 ,Geophysics. Cosmic physics ,01 natural sciences ,114 Physical sciences ,ELECTRIC-FIELD ,Acceleration ,KINETIC STRUCTURE ,MAGNETIC RECONNECTION ,Physics::Plasma Physics ,0103 physical sciences ,Earth and Planetary Sciences (miscellaneous) ,Pitch angle ,Interplanetary magnetic field ,010303 astronomy & astrophysics ,0105 earth and related environmental sciences ,Line (formation) ,Physics ,INSTRUMENT ,QC801-809 ,PLASMA SHEET ,Plasma sheet ,Geology ,Astronomy and Astrophysics ,Magnetic reconnection ,Plasma ,CURRENT SHEETS ,115 Astronomy, Space science ,Computational physics ,Magnetic field ,MODEL ,Space and Planetary Science ,Physics::Space Physics ,X LINE MOTION - Abstract
We present results of noon–midnight meridional plane global hybrid-Vlasov simulations of the magnetotail ion dynamics under a steady southward interplanetary magnetic field using the Vlasiator model. The simulation results show magnetotail reconnection and formation of earthward and tailward fast plasma outflows. The hybrid-Vlasov approach allows us to study ion velocity distribution functions (VDFs) that are self-consistently formed during the magnetotail evolution. We examine the VDFs collected by virtual detectors placed along the equatorial magnetotail within earthward and tailward outflows and around the quasi-steady X line formed in the magnetotail at X≈-14RE. This allows us to follow the evolution of VDFs during earthward and tailward motion of reconnected flux tubes as well as study signatures of unmagnetized ion motion in the weak magnetic field near the X line. The VDFs indicate actions of Fermi-type and betatron acceleration mechanisms, ion acceleration by the reconnection electric field, and Speiser-type motion of ions near the X line. The simulated VDFs are compared and show good agreement with VDFs observed in the magnetotail by the Time History of Events and Macroscale Interactions during Substorms (THEMIS) and Acceleration, Reconnection, Turbulence and Electrodynamics of Moon's Interaction with the Sun (ARTEMIS) spacecraft. We find that the VDFs become more gyrotropic but retain transverse anisotropy and counterstreaming ion beams when being convected earthward. The presented global hybrid-Vlasov simulation results are valuable for understanding physical processes of ion acceleration during magnetotail reconnection, interpretation of in situ observations, and for future mission development by setting requirements on pitch angle and energy resolution of upcoming instruments.
- Published
- 2021
- Full Text
- View/download PDF
7. SLICE: An Innovative Photovoltaic Solution for Adaptive Envelope Prototyping and Testing in a Relevant Environment
- Author
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Antonio Gagliano, Vincenzo Sapienza, Angelo Monteleone, and Gianluca Rodonò
- Subjects
kinetic structure ,Computer science ,adaptive envelopes ,020209 energy ,Geography, Planning and Development ,0211 other engineering and technologies ,TJ807-830 ,02 engineering and technology ,Management, Monitoring, Policy and Law ,TD194-195 ,Renewable energy sources ,photovoltaic ,skin system ,Component (UML) ,Arduino ,021105 building & construction ,0202 electrical engineering, electronic engineering, information engineering ,GE1-350 ,Environmental effects of industries and plants ,Renewable Energy, Sustainability and the Environment ,Photovoltaic system ,BIPV ,Control engineering ,composite material ,foldable surface ,Environmental sciences ,Mechanical system ,Management system ,Design process ,Building-integrated photovoltaics ,Envelope (motion) - Abstract
The development of adaptive architectural envelopes is one of the goals of researchers that aim to improve the energy performance of buildings. Traditional devices often have drawbacks linked to the complexity of the kinetic systems used, as the mechanical systems for guaranteeing proper operation are complex and expensive (e.g., hinges). Adaptive envelopes require energy for driving the mechanical components and management systems. Thus, it is useful for such adaptive elements to be self-sufficient, generating the energy necessary for their functioning. This study presents a prototype of a lightweight and stand-alone component for dynamic envelopes, characterized by a flexible composite material integrated with high-efficiency photovoltaic cells called the Solar Lightweight Intelligent Component for Envelopes (SLICE). The management and control of the SLICE is based on the Arduino platform. This paper describes the multidisciplinary design process that led to the realization of the current prototypes, the laboratory test phases, as well as the results of the preliminary experiments carried out under real environmental conditions.
- Published
- 2021
8. SLICE: una soluzione innovativa per involucri architettonici adattivi con tecnologia fotovoltaica
- Author
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Monteleone, Angelo, Rodonò, Gianluca, Attardo, Ivan, Gagliano, Antonio, and Sapienza, Vincenzo
- Subjects
photovoltaic ,kinetic structure ,skin system ,adaptive envelopes ,BIPV ,composite material ,adaptive envelopes, photovoltaic, composite material, skin system, foldable surface, kinetic structure, BIPV ,foldable surface - Published
- 2021
9. SLICE: An Innovative Photovoltaic Solution for Adaptive Envelope Prototyping and Testing in a Relevant Environment.
- Author
-
Monteleone, Angelo, Rodonò, Gianluca, Gagliano, Antonio, and Sapienza, Vincenzo
- Abstract
The development of adaptive architectural envelopes is one of the goals of researchers that aim to improve the energy performance of buildings. Traditional devices often have drawbacks linked to the complexity of the kinetic systems used, as the mechanical systems for guaranteeing proper operation are complex and expensive (e.g., hinges). Adaptive envelopes require energy for driving the mechanical components and management systems. Thus, it is useful for such adaptive elements to be self-sufficient, generating the energy necessary for their functioning. This study presents a prototype of a lightweight and stand-alone component for dynamic envelopes, characterized by a flexible composite material integrated with high-efficiency photovoltaic cells called the Solar Lightweight Intelligent Component for Envelopes (SLICE). The management and control of the SLICE is based on the Arduino platform. This paper describes the multidisciplinary design process that led to the realization of the current prototypes, the laboratory test phases, as well as the results of the preliminary experiments carried out under real environmental conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
10. Kinetic structures of quasi-perpendicular shocks in global particle-in-cell simulations
- Author
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Peng, I. Bo, Markidis, Stefano, Laure, Erwin, Johlander, A., Vaivads, A., Khotyaintsev, Y., Henri, P., Lapenta, G., Peng, I. Bo, Markidis, Stefano, Laure, Erwin, Johlander, A., Vaivads, A., Khotyaintsev, Y., Henri, P., and Lapenta, G.
- Abstract
We carried out global Particle-in-Cell simulations of the interaction between the solar wind and a magnetosphere to study the kinetic collisionless physics in super-critical quasi-perpendicular shocks. After an initial simulation transient, a collisionless bow shock forms as a result of the interaction of the solar wind and a planet magnetic dipole. The shock ramp has a thickness of approximately one ion skin depth and is followed by a trailing wave train in the shock downstream. At the downstream edge of the bow shock, whistler waves propagate along the magnetic field lines and the presence of electron cyclotron waves has been identified. A small part of the solar wind ion population is specularly reflected by the shock while a larger part is deflected and heated by the shock. Solar wind ions and electrons are heated in the perpendicular directions. Ions are accelerated in the perpendicular direction in the trailing wave train region. This work is an initial effort to study the electron and ion kinetic effects developed near the bow shock in a realistic magnetic field configuration., QC 20151130
- Published
- 2015
- Full Text
- View/download PDF
11. Factorial Structure of Basic Kinetic Elements
- Author
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Dodig, Miroslav, Kovač, Marjeta, Jurak, Gregor, Starc, Gregor, and Bizjak, Katarina
- Subjects
Factorial analysis ,kinetic elements ,kinetic structure ,mechanisms for regulation ,basic kinetic elements ,factorial analysis ,latent structure of basic kinetic elements ,mechanism for regulating - Abstract
Quantitative and qualitative diversity of expressing basic kinetic elements in the kinetic structure is manifested in overcoming resistance on a certain path in certain time. Basic kinetic elements – time (s), amplitude (m) and resistance (kg), with their distribution and configuration determine the efficiency and type of the kinetic structure and enable the observation of those elements with other anthropological areas. The basic goal of this research is directed towards defining the latent structure of basic kinetic elements with the help of a specially prepared instrumentarium, with the use of the ergometrical method and on the basis of a factorial analysis of the elements of resistance, amplitude and time in individual and repeating motion. The quality and the degree of correlation between basic kinetic elements was determined and a factorial structure was obtained for 124, 15-years-old, male respondents. Considering the type of research, this sample can be considered representative. A total of 21 kinetic measures, obtained with the use of instruments and the use of ergometrical method, were used for evaluating basic kinetic elements. Variables were chosen in such a way that they hypothetically cover basic kinetic elements in kinetic structures manifested in individual and repeating movement, defined as time dimensionality of the kinetic structure and tensodynamic dimensionality of the kinetic structure. For a better insight into the general behavior of analyzed variables, the methods of data processing were encompassed through calculation of regresional analysis series, so as to determine the complex and the latent structure of basic kinetic elements (factorial analysis Little Jiffy, Mark IV was used). The analysis of the factorial structure of basic kinetic elements was carried out in a manifest area of variables. Six factors have been extracted on the basis of characteristic vales of the matrix of covariance of the analyzed space with the use of Guttman ¬ ; ; ; Kaiserov criterion. Isolated factors in this area have a phenomenological determination: 1. Latent dimension of pulling in kinetic structure (defined with resistance, amplitude and time in kinetic task - pulling) 2. Latent dimension of pressing in kinetic structure (defined with resistance, amplitude and time in kinetic task - pressing) 3. Latent dimension of repeating in kinetic structure (defined with resistance, amplitude and time in kinetic task - repeating) 4. Latent dimension of accumulating and releasing of energy in kinetic structure (defined with resistance, amplitude and time in kinetic task) 5. Latent dimension of generating and releasing energy in the kinetic structure (defined with resistance within kinetic tasks realized in individual movement) 6. Latent dimension of special determination of the kinetic structure (defined with the amplitude within kinetic tasks realized in individual movement). The latent structure of basic kinetic elements was analyzed. Latent kinetic dimensions were extracted and interpreted as mechanisms for regulating intensity of exitation, a mechanism for regulating synergy and regulating muscle tone and integrative mechanisms for regulation, control and coordination of the mentioned regulative subsystems in the kinetic structure.
- Published
- 2010
12. Hotel @ Olympic Park, Berlin
- Author
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Sheth, U.A. (author) and Sheth, U.A. (author)
- Abstract
Proposed site for the project is on the western end of the Olympic Stadium. The site has historical structures old open air arena Waldbune, and Glockenturm, as well as scattered sports facilities which includes the equestrian center, tennis club, athletic center, sports center and a small hotel. The place is used by many people for regular practice and during the events; the site is supporting facility for the Stadium. Only public transport that reach the site is Metro station Pichelsberg. Problem identification/task: 1. Improve connectivity and movement: vehicular and pedestrian + barrier free 2. Relocation of existing dilapidated sports facilities 3. Proposal of new hotel (150 beds), Hyperbody Research Lab., Architecture, Architecture
- Published
- 2010
13. A Research Prototype for Kinetic Thin Glass Building Envelopes
- Author
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Hugo Mulder, Asefi, Maziar, and Gorgolewski, Mark
- Subjects
kinetic structure ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,kinetic architecture ,research prototype ,ComputingMethodologies_COMPUTERGRAPHICS ,thin glass ,active facade - Abstract
This paper presents a kinetic research prototype for a space dynamically enclosed by transparent material. The prototype is made of polycarbonate strips, cold-bent into arches, and actuated by rotating their footings. The prototype demonstrates the novel use of a transparent material to create architectural space and highlights the potential of its use for creating kinetic facades. A study to produce an iteration of the prototype using thin glass as the dominant transparent material demonstrates the structural capacity of the glass for dramatic kinetic performance, and at the same time highlights various aspects for further careful consideration.
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