Two-dimensional analog filters: a new form of realization

1989 ◽  
Vol 36 (1) ◽  
pp. 153-154 ◽  
Author(s):  
M.A. Sid-Ahmed
2021 ◽  
Author(s):  
◽  
Jessica Wright

<p>This research investigates a correspondence between the architectural representational tool of drawing, and the translations of these into something recognised as ‘built’. It is fundamentally concerned around representation in architecture driven by the principles that our entire engagement with architecture is via representation. Architects do not produce buildings but produce images of buildings, and the role of two-dimensional representation plays a principal part in architecture. Architecture is always representational, and the more we engage with representation the more we might push the envelope with what we understand architecture to be.   This thesis aims to establish within the contemporary discipline, what we understand about the responsibility of linear perspective as a representational tool. By understanding what lies behind the canon of perspective in architecture, this thesis questions whether the representation of conventional architecture could benefit from a new way of drawing linear perspective?   The discovery of perspective during the Renaissance has influenced not only our way of representing architecture but also how we view, and therefore design it. It has become integrated with our understanding of architecture at an unconscious level. Architects no longer need control of projective geometry, and due to this cannot be critical of the system of representation or control its limits. This leads to mediate a shift in perspective, with the intention to generate a representation of new form.   The motivation for this thesis was that from linear perspective, as it has done so for centuries, we can produce evocative and meaningful vocabularies that attempt to enrich architecture.</p>


Author(s):  
Anca I. Lasc

Pierre-Luc Cicéri, chief decorator at the Paris Opéra, also established a career as interior decorator and educator of students that treated interior spaces as three-dimensional images and artworks in their own right. Cicéri’s followers helped push the art of fantasy architecture to a new level, creating a new form of art and popular entertainment around the “ideal home.” Exhibited at the Salon and at a variety of universal and decorative arts exhibitions as well as published in expensive, luxury folios and reprinted in cheaper, popular editions, the “interior dreamscapes” by Cicéri’s followers disseminated the interior for interior’s sake. The domestic interior could be admired, collected, hidden inside cabinets, or reappropriated as an object of contemplation for private walls. The same images functioned as two-dimensional blueprints for the construction of three-dimensional settings and as advertising schemes for the artists that produced and popularized them, furthering interest in and creating a common language about the appearance of the modern, private home. The chapter ultimately argues that wishful thinking and vicarious identification with the - often missing - owners of the model interiors made available through these means and furtively perused in private homes helped create a professional niche that would soon be occupied by the interior designer.


2020 ◽  
Author(s):  
Xianjue Chen ◽  
Marc Dubois ◽  
Silvana Radescu Cioranescu ◽  
Aditya Rawal ◽  
Chuan Zhao

Fluorinated single-layer diamond (“F-diamond”) is a new form of two-dimensional carbon allotrope. Herein, poly(dicarbon monofluoride) (C<sub>2</sub>F)<sub>n</sub> that is essentially made of stacked layers of “F-diamane” has been synthesized and exfoliated in a variety of solvents to yield well-dispersed ultrathin sheets. Microscopic and spectroscopic analyses revealed that the exfoliated sheets retained the “F-diamane”-like structure. The experimental results are supported by the density functional theory (DFT) calculations.


2001 ◽  
Vol 10 (04) ◽  
pp. 575-578 ◽  
Author(s):  
M. ALVES

The metric for the two-dimensional dilaton gravity can be writen in an alternative form, similar to the two-dimensional Schwarzschild metric, and allow us the identification of some quantitiies with those equivalent in the Schwarzschild solution. This new form, however, presents a nonphysical singularity at the horizon in the same way that in the realistic four dimensional case. We show a procedure to eliminate this horizon singularity and, as an application, the resulting metric is used to obtain the associated Hawking temperature. We discuss also some differents between this metric and the Schwarzschild one.


Nano Today ◽  
2021 ◽  
Vol 39 ◽  
pp. 101232
Author(s):  
Cordelia Sealy
Keyword(s):  

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
F. A. Hendi ◽  
M. M. Al-Qarni

We propose and apply coupling of the variational iteration method (VIM) and homotopy perturbation method (HPM) to solve nonlinear mixed Volterra-Fredholm integrodifferential equations (VFIDE). In this approach, we use a new formula called variational homotopy perturbation method (VHPM) and variational accelerated homotopy perturbation method (VAHPM). This approach is based on the form of He’s polynomials and on a new form of He’s polynomials. We discuss the convergence of the technique. Some numerical examples are introduced to verify the efficiency of this technique.


2012 ◽  
Vol 135 (8) ◽  
pp. 2871-2874 ◽  
Author(s):  
E̅riks Kupče ◽  
Ray Freeman
Keyword(s):  

1991 ◽  
Vol 01 (01) ◽  
pp. 75-91
Author(s):  
G. GU ◽  
P. MISRA ◽  
B. A. SHENOI

A new methodology is proposed for the synthesis of two-dimensional analog filters with linear phase. The Fourier series theory is employed to design a noncausal Laguerre type filter and Hankel approximation machinery is then used to synthesize the causal, stable two-dimensional analog filter with linear phase. The proposed design technique is illustrated by design of a lowpass filter.


2004 ◽  
Vol 10 (4) ◽  
pp. 361-378 ◽  
Author(s):  
Hiroyuki Iizuka ◽  
Takashi Ikegami

Turn-taking behavior is simulated in a coupled-agents system. Each agent is modeled as a mobile robot with two wheels. A recurrent neural network is used to produce the motor outputs and to hold the internal dynamics. Agents are developed to take turns on a two-dimensional arena by causing the network structures to evolve. Turn taking is established using either regular or chaotic behavior of the agents. It is found that chaotic turn takers are more sensitive in response to inputs from the other agent. Conversely, regular turn takers are comparatively robust against noisy inputs, owing to their restricted dynamics. From many observations, including turn taking with virtual agents, we claim that there is a complementary relationship between robustness and adaptability. Furthermore, by investigating the recoupling of agents from different GA generations, we report the emergence of a new turn-taking behavior. Potential for synthesizing a new form of interaction is another characteristic of chaotic turn takers.


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