The analysis of dynamics and the relationship between spontaneous and evoked activity as cell assemblies in a cultured neuronal network

Author(s):  
Kai Hirokawa ◽  
Suguru N. Kudoh
Author(s):  
Anar Eminov Et al.

According to the statistical data of recent years, tourism has been one of the ever-growing sectors in Azerbaijan. Thus, in the last five years, there has been a steady increase in the number of entrepreneurship subjects serving tourism in Azerbaijan and the number of foreign nationals traveling for tourism, correspondingly 4.5 and 8.5 percent. At present, the direct share of the tourism industry in the country's GDP and employment is 4.5 and 3.3 percent, respectively. In the article econometric analysis of the dependence on the relationship between tourism industry graduates and their development has been done. The regression equation of the dependence of the number of graduates studying tourism on the number of tourists in the country and the dependence of the tourism sector’s GDP on the number of graduates in the tourism sector were estimated using the Eviews software based on 2008–2017 statistical data using the least squares method.


Author(s):  
Suguru N. Kudoh

A neurorobot is a model system for biological information processing with vital components and the artificial peripheral system. As a central processing unit of the neurorobot, a dissociated culture system possesses a simple and functional network comparing to a whole brain; thus, it is suitable for exploration of spatiotemporal dynamics of electrical activity of a neuronal circuit. The behavior of the neurorobot is determined by the response pattern of neuronal electrical activity evoked by a current stimulation from outer world. “Certain premise rules” should be embedded in the relationship between spatiotemporal activity of neurons and intended behavior. As a strategy for embedding premise rules, two ideas are proposed. The first is “shaping,” by which a neuronal circuit is trained to deliver a desired output. Shaping strategy presumes that meaningful behavior requires manipulation of the living neuronal network. The second strategy is “coordinating.” A living neuronal circuit is regarded as the central processing unit of the neurorobot. Instinctive behavior is provided as premise control rules, which are embedded into the relationship between the living neuronal network and robot. The direction of self-tuning process of neurons is not always suitable for desired behavior of the neurorobot, so the interface between neurons and robot should be designed so as to make the direction of self-tuning process of the neuronal network correspond with desired behavior of the robot. Details of these strategies and concrete designs of the interface between neurons and robot are be introduced and discussed in this chapter.


2009 ◽  
Vol 65 ◽  
pp. S146
Author(s):  
Ai Kiyohara ◽  
Takahisa Taguchi ◽  
Suguru Kudoh

2012 ◽  
Vol 580 ◽  
pp. 236-239
Author(s):  
Zhi Wei Wang ◽  
Ling Qin Meng

According to the linear vibration theory and the Lagrange Equation, this paper makes an analysis of dynamics and establishes the dynamics equation of linear vibrating screen machine system and then confirms the relationship among its vibration mass, the supporting spring stiffness , the mass of eccentric block and vibration circular frequency, it provides conditions for the precise design of the linear vibration screening machine’s bearing spring and the accurate calculation of the screening processing capacity,and it provides a basis for the vibrating screen machine’s force analysis and its strength calculation. By designing the supporting spring of the ZKB3675 linear vibrating screen machine, it verifies the practicality of the dynamics equation which is established in this paper.


2010 ◽  
Vol 68 ◽  
pp. e441
Author(s):  
Hidekatsu Ito ◽  
Naohiko Fujiwara ◽  
Suguru Kudoh

Author(s):  
Georg Northoff

The brain and especially its spontaneous activity have been the subject of intense study in both neuroscience and philosophy (as for instance by Klein 2014). However, what exactly counts as spontaneous activity as well as its relationship with stimulus-induced or task-evoked activity remain matters of debate. I here focus on the second aspect, the relationship between spontaneous and stimulus-induced activity. I suggest two different models of their relationship, parallelism and interactionism. I weigh the empirical evidence for and against both models and tentatively suggest that it speaks in favour of interactionism wherein spontaneous and stimulus-induced activity are taken to be mutually dependent on each other and interact in a non-additive way. In addition to empirical evidence, I also discuss the non-additive interaction within the context of philosophy of science by referring to Giere’s distinction between model and fundamental principle. I suggest a particular coding strategy by the brain, e.g., difference-based coding, to underlie and make possible the interaction model – difference-based coding may therefore be regarded a fundamental principle. This complements the empirical findings I present by extrapolating some of the theoretical implications of the interactionist view.


2011 ◽  
Vol 135-136 ◽  
pp. 140-145 ◽  
Author(s):  
Xin Wang ◽  
Rui Ying Zhao

A reverse driving control method for one type of hydrostatic mobile machinery is devised in this paper. Based on the analysis of dynamics of stopping process, the relationship between engine speed and pump displacement is established. To restrict the peak value of engine overspeed within the region of the allowable value, an offline parameter determination approach complied to the requirements of average stopping deceleration is developed. The online control method using the selected parameter is presented. A flow diagram is given to illustrate the control method.


1967 ◽  
Vol 31 ◽  
pp. 239-251 ◽  
Author(s):  
F. J. Kerr

A review is given of information on the galactic-centre region obtained from recent observations of the 21-cm line from neutral hydrogen, the 18-cm group of OH lines, a hydrogen recombination line at 6 cm wavelength, and the continuum emission from ionized hydrogen.Both inward and outward motions are important in this region, in addition to rotation. Several types of observation indicate the presence of material in features inclined to the galactic plane. The relationship between the H and OH concentrations is not yet clear, but a rough picture of the central region can be proposed.


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