echo effect
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Author(s):  
Ognyan Ivanov ◽  
Konstantin Simeonov ◽  
Petar Todorov ◽  
Zhivko Stoyanov ◽  
Desislava Antonova ◽  
...  
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2021 ◽  
Vol 24 (1) ◽  
pp. 43-76
Author(s):  
Olivér Kovács

The paper attempts to contribute to the better understanding of how the centrifugal force towards  weakening European integration has developed by  identifying the EU-specific vectors of such gradient. We  argue that disorientegration is an echo effect of a complex  amalgam of mutually intertwined and interrelated mechanisms embedded secularly into our European integration process. The paper also addresses whether  secular stagnation adds to that centrifugal force. The paper finally outlines at least six potential principles of reversing  the European disorientegration by cultivating contingency governance.


2021 ◽  
Author(s):  
Ognyan Ivanov ◽  
Petar Todorov ◽  
Konstantin Simeonov ◽  
Ashok Vaseashta

AbstractIn our ongoing investigations, we have studied a specific interaction between electromagnetic fields and matter – the so-called Electromagnetic echo effect (EMEE). It enables rapid and contactless investigations of gases, liquids and solids to be performed, since the signal generated as a result of the effect is quite sensitive to all kinds of changes occurring within the studied samples. The effect can be considered universal for all matter and provides analysis in real time. We use this phenomenon to demonstrate the practical possibility to control reactions, occurring between Chicken anemia virus (CAV) and the corresponding antibodies. This methodology can be used for simple but reliable control of similar, otherwise hard to detect, antigen-antibody reactions, in order to confirm the presence of a certain viral species. The approach offers a high level of safety, since it enables measurements to be taken remotely, thus limiting exposure to contagion. We further discuss the possibility to register the presence of SARS-nCoV-2 in an attempt to address current global pandemic.


2021 ◽  
Vol 1 (2) ◽  
pp. 136-143
Author(s):  
Chen Zekang ◽  

The article introduces Jia Daqun's Concerto for Percussion and Symphony Orchestra "Fusion II" into Russian musicology for the first time. The work is considered as one of the illustrative examples of the inclusion of traditional Chinese percussion instruments in symphony orchestra. Following modern trends in unconventional ways of playing the tanggu solo drum, the composer achieves a timbre transformation which, along with rhythmic and dynamic qualities, allows to imitate the sound of Indian drums and African tambourines. The new sound created in this way becomes one of the indicators of the cross-cultural integration, which is accomplished not by mechanical borrowing of authentic musical material, but by developing a distinctive rhythmic pattern and sound production techniques. The combination of the timbres of Chinese gong and the vibrato of stringed instruments in Fusion II creates slowdowns and an "echo" effect typical for electronic music. In the Concerto all the features of the genre are observed, but the classical constant received a refraction in the light of modern processes, which required the composer to use new and sometimes harsh methods, almost completely eliminating the lyrical expression.


Author(s):  
Ognyan Ivanov ◽  
Konstantin Simeonov ◽  
Petar Todorov ◽  
Desislava Antonova ◽  
Viktor Pulis

Early identification of viruses leads to more efficient disease management and control, and is extremely important. A possible new approach for creating virus sensors is the Electromagnetic echo effect (EMEE). An important feature is that the signal from EMEE is highly dependent on the state of the irradiated body. This makes it possible to control ongoing reactions, even if these reactions are invisible to the human eye or other equipment. This article shows the possibility of registering reaction occurring in the presence of an avian coronavirus causing infectious bronchitis, strain Massachusetts. The same methodology can be applied for other types of viruses as well.


2018 ◽  
Author(s):  
Jesse Breedlove ◽  
Ghislain St-Yves ◽  
Cheryl Olman ◽  
Thomas Naselaris

Humans have long wondered about the function of mental imagery and its relationship to vision. Although visual representations are utilized during imagery, the computations they subserve are unclear. Building on a theory that treats vision as inference about the causes of sensory stimulation in an internal generative model, we propose that mental imagery is inference about the sensory consequences of predicted or remembered causes. The relation between these complementary inferences yields a relation between the brain activity patterns associated with imagery and vision. We show that this relation has the formal structure of an echo that makes encoding of imagined stimuli in low-level visual areas resemble the encoding of seen stimuli in higher areas. To test for evidence of this echo effect we developed imagery encoding models—a new tool for revealing how imagined stimuli are encoded in brain activity. We estimated imagery encoding models from brain activity measured with fMRI while human subjects imagined complex visual stimuli, and then compared these to visual encoding models estimated from a matched viewing experiment. Consistent with an echo effect, imagery encoding models in low-level visual areas exhibited decreased spatial frequency preference and larger, more foveal receptive fields, thus resembling visual encoding models in high-level visual areas where imagery and vision appeared to be almost interchangeable. Our findings support an interpretation of mental imagery as a predictive inference that is conditioned on activity in high-level visual cortex, and is related to vision through shared dependence on an internal model of the visual world.


2017 ◽  
Vol 13 (3) ◽  
pp. 274-278
Author(s):  
H.T. Thejaswi ◽  
A. Kumar ◽  
K. Krishna

Deaths due to firearms are some of the interesting and contentious cases that a forensic pathologist/autopsy surgeon encounters in his practice. Whenever there is ‘ambiguity’ regarding the nature or sequence of events any unnatural deaths including those caused by firearms the practice of visiting crime scene should be encouraged especially in a country like India where autopsy surgeons often neglect it. Here we present a case report in which there were inconsistencies in the autopsy findings with the alleged history. The witnesses heard about four to six gunshot sounds, whereas only two spent cartridge cases were retrieved from the crime scene. Authors identified the atypical nature of firearm injuries sustained by the victims that were possible by just two bullets. Crime scene visit was undertaken where we discovered the possibility of the echo effect behind the production of four to six sounds. Further by using computer software program, positions of the gunman, victims and the bullet trajectory of the two bullets was created.


2015 ◽  
Vol 7 (6) ◽  
pp. 26 ◽  
Author(s):  
Grigor I. Mamniashvili ◽  
Tatiana O. Gegechkori ◽  
Zurab G. Shermadini

<p class="1Body">In this work the cumulative single-pulse echo effect in cobalt was studied when a train of single-pulse echoes generated by a repeating single RF pulse sequence, exhibits growth rather than damping. The phenomenon is observed below some threshold value of radio-frequency pulse power when the nonresonant mechanism of single-pulse echo excitation in cobalt becomes effective.<strong></strong></p>


2015 ◽  
Vol 39 (2) ◽  
pp. 67-76
Author(s):  
Lance Putnam

Feedback delay lines are the basis of myriad audio effects and reverberation schemes. The feedback delay line, by itself, is limited to producing an infinite sequence of exponentially decaying echoes. We introduce a new type of linear time-invariant echo effect whose impulse response is a generalized sum of damped complex sinusoids. This permits echo responses to be shaped as simple sinusoids, Fourier-based waveforms, and many other complex, possibly nonperiodic, patterns that would not be feasible with other existing methods. Additionally, because the response is complex-valued, it can be used to produce auto-panning echo effects with many kinds of spatial trajectories. The effect is computationally efficient and straightforward to implement, as it only requires a parallel combination of feedback delay lines.


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