Yokohama, Japan
Yokohama, Japan

Kanto Gakuin University is a private university located in Kanazawa-ku, Yokohama, Japan. Wikipedia.


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Ishii M.,Kanto Gakuin University
Pacific Asia Conference on Information Systems, PACIS 2016 - Proceedings | Year: 2016

In recent years, social networking services such as facebook, twitter and some kind of blogs have been growing, obtaining more and more users and having larger impact on many areas of social activities. In these services, it has been noted that network externality plays an important role. The utility of a service depends on the number of users that use the service. In general, the growth curve of the number of the users etc. is nonlinear. So far, however, this nonlinearity has not been understood quantitatively. By applying the nearest neighboring agent model called Ising type agent model, we analyze the growth of a blog type social networking service. It is shown that the growth curve is quantitatively reproduced covering the whole range from the initial service-starting stage to the final saturating stage, despite the fact that the model has only two parameters. This means that the model is promising as a starting point of analyzing the growth and the impact of social networking services.


Patent
Kanto Gakuin University and Tokyo Ohka Kogyo | Date: 2013-05-17

A battery having high output voltage, high energy density and excellent charge and discharge cycle characteristics is achieved through the use of one of the following negative electrode base members as a negative electrode base member for lithium ion secondary batteries: a negative electrode base member where a metal film is formed on a support having an organic film; such a negative electrode base member where the surface layer of the organic film is covered with a metal oxide film; a negative electrode base member where a metal film is formed on a support having a composite film formed from a composite film-forming material containing an organic component and an inorganic component; and a negative electrode base member where a silica coating is formed, on a support having a photoresist pattern, from a silica film-forming coating liquid and a metal film is formed on the support after removing the photoresist pattern.


Patent
Kanto Gakuin University and Tokyo Ohka Kogyo | Date: 2013-05-17

A battery having high output voltage, high energy density and excellent charge and discharge cycle characteristics is achieved through the use of one of the following negative electrode base members as a negative electrode base member for lithium ion secondary batteries: a negative electrode base member where a metal film is formed on a support having an organic film; such a negative electrode base member where the surface layer of the organic film is covered with a metal oxide film; a negative electrode base member where a metal film is formed on a support having a composite film formed from a composite film-forming material containing an organic component and an inorganic component; and a negative electrode base member where a silica coating is formed, on a support having a photoresist pattern, from a silica film-forming coating liquid and a metal film is formed on the support after removing the photoresist pattern.


Patent
Tokyo Ohka Kogyo and Kanto Gakuin University | Date: 2012-07-04

The present invention aims to realize a battery having high output voltage, high energy density and excellent charge and discharge cycle characteristics through a constitution different from those of conventional batteries. Specifically, one of the following negative electrode base members is used as a negative electrode base member for lithium ion secondary batteries: a negative electrode base member wherein a metal film is formed on a support having an organic film; such a negative electrode base member wherein the surface layer of the organic film is covered with a metal oxide film; a negative electrode base member wherein a metal film is formed on a support having a composite film formed from a composite film-forming material containing an organic component and an inorganic component; and a negative electrode base member wherein a silica coating is formed, on a support having a photoresist pattern, from a silica film-forming coating liquid and a metal film is formed on the support after removing the photoresist pattern.


Momose-Sato Y.,Kanto Gakuin University | Sato K.,Komazawa Women's University
Respiratory Physiology and Neurobiology | Year: 2011

To regulate the autonomic function, the vagus nerve transfers various sensory information from peripheral organs, and appropriate motor reflexes are produced in the neural circuit. The functional development of the vagal pathway during the early phase of embryonic development has long been unclear. Optical recording with voltage-sensitive dyes has provided a new approach to the analysis of the functional development of the embryonic central nervous system. In this review, we present recent progress in optical studies on the vagal pathway in the embryonic chick and rat brainstems. The topics include how neural excitability is initially expressed in the motor and sensory nuclei [e.g. the dorsal motor nucleus of the vagus nerve (DMNV) and the nucleus of the tractus solitarius (NTS)] and how synapse networks are formed in the primary and higher-ordered sensory nuclei [e.g. the parabrachial nucleus (PBN)]. We also refer to the functional development of the glossopharyngeal nuclei and compare the developmental steps with those of the vagal nuclei. © 2011 Elsevier B.V.


Momose-Sato Y.,Kanto Gakuin University | Sato K.,Komazawa Women's University
Neuroscience | Year: 2014

Widely correlated spontaneous activity in the developing nervous system is transiently expressed and is considered to play a fundamental role in neural circuit formation. The depolarization wave, which spreads over a long distance along the neuraxis, maximally extending to the lumbosacral cord and forebrain, is an example of this spontaneous activity. Although the depolarization wave is typically initiated in the spinal cord in intact preparations, spontaneous discharges have also been detected in the isolated brainstem. Although this suggests that the brainstem has the ability to generate spontaneous activity, but is paced by a caudal rhythm generator of higher excitability, a number of questions remains. Does brainstem activity simply appear as a passive consequence, or does any active change occur in the brainstem network to compensate for this activity? If the latter is the case, does this compensation occur equally at different developmental stages? Where is the new rhythm generator in the isolated brainstem? To answer these questions, we optically analyzed spatio-temporal patterns of activity detected from the chick brainstem before and after transection at the obex. The results revealed that the depolarization wave was homeostatically maintained, which was characterized by an increase in excitability and/or the number of neurons recruited to the wave. The wave was more easily maintained in younger embryos. Furthermore, we demonstrated that the ability of brainstem neurons to perform such an active compensation was not lost even at the stage when the depolarization wave was no longer observed in the intact brainstem. © 2014 IBRO.


Momose-Sato Y.,Kanto Gakuin University | Sato K.,Komazawa Women's University
Annals of the New York Academy of Sciences | Year: 2013

Spontaneous embryonic movements, called embryonic motility, are produced by correlated spontaneous activity in the cranial and spinal nerves, which is driven by brainstem and spinal networks. Using optical imaging with a voltage-sensitive dye, we revealed previously in the chick and rat embryos that this correlated activity is a widely propagating wave of neural depolarization, which we termed the depolarization wave. One important consideration is whether a depolarization wave with similar characteristics occurs in other species, especially in different mammals. Here, we provide evidence for the existence of the depolarization wave in the mouse embryo by summarizing spatiotemporal characteristics and pharmacological natures of the widely propagating wave activity. The findings show that a synchronized wave with common characteristics is expressed in different species, suggesting its fundamental roles in neural development. © 2013 New York Academy of Sciences.


Yamada T.,Kanto Gakuin University | Funaki Y.,University of Tsukuba
Physical Review C - Nuclear Physics | Year: 2010

The structure of 3/2⊃- and 1/2⊃+ states in B11 is investigated with an α+α+t orthogonality condition model (OCM) based on the Gaussian expansion method. Full levels up to the 3/23- and 1/22+ states around the α+α+t threshold (Ex=11.1 MeV) are reproduced consistently with the experimental energy levels. It is shown that the 3/23- state located around the 7Li+α threshold has an α+α+t cluster structure, whereas the 3/21- and 3/22- states have a shell-model-like compact structure. We found that the 3/23- state does not possess an α-condensate-like nature analogous to the 02+ state of C12 (Hoyle state) which has a dilute 3α-condensate structure described by a (0Sα)3 configuration with about 70% probability, although the monopole transition strength of the former is as large as that of the latter. We discuss the reasons why the 3/23- state does not have the condensate character. On the other hand, the 1/21+ state just below the 7Li+α threshold has a cluster structure that can be interpreted as a parity-doublet partner of the 3/23- state. We indicate that the 12.56-MeV state (Jπ=1/22+) just above the α+α+t threshold observed in the Li7(Li7,B11⊃*)t reaction, etc., is of the dilute cluster-gas-like configuration and is a strong candidate for the product states of clusters, having a configuration of (0Sα)2(0S t) with about 65% probability, from the analyses of the single-cluster motions in B11. The structure property of the 1/2⊃+ resonant state is analyzed with the complex scaling method. © 2010 The American Physical Society.


Nishida M.,Kanto Gakuin University
IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM | Year: 2016

Recently, the declining birth rate and growing proportion of elderly people, an insufficient number of caregivers, have become serious issues in Japan. To address these problems, biped walking robots have been proposed, which have high affinity toward humans. This study presents the development of a balloon walking robot that uses buoyancy to offset the effect of gravity. The author believes we can ensure the safety of robots by analyzing the psychological effects on humans via a balloon walking robot. The proposed robot has flexible legs and a compact and lightweight (total weight of 5.9 g) drive due to the use of shape memory alloys (SMAs). The legs have two degrees of freedom and are controlled by simply switching the ON/OFF current signals to the SMA-based V-type-flexible flat plate actuator. The balloon walking robot stays upright due to a balance between the leg mechanism and helium. In walking experiments, we tested static walking to acquire basic data for the next model. These experiments verified the feasibility of the mechanism. © 2016 IEEE.


Nagao K.-I.,Kanto Gakuin University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2010

We propose some kind of new attack which gives the solution of the discrete logarithm problem for the Jacobian of a curve defined over an extension field , considering the set of the union of factor basis and large primes B 0 given by points of the curve whose x-coordinates lie in . In this attack, an element of the divisor group which is written by a sum of some elements of factor basis and large primes is called (potentially) decomposed and the set of the factors that appear in the sum, is called decomposed factors. So, it will be called decomposition attack. In order to analyze the running of the decomposition attack, a test for the (potential) decomposedness and the computation of the decomposed factors are needed. Here, we show that the test to determine if an element of the Jacobian (i.e., reduced divisor) is written by an ng sum of the elements of the decomposed factors and the computation of decomposed factors are reduced to the problem of solving some multivariable polynomial system of equations by using the Riemann-Roch theorem. In particular, in the case of hyperelliptic curves of genus g, we construct a concrete system of equations, which satisfies these properties and consists of (n 2-n)g quadratic equations. Moreover, in the case of (g,n)=(1,3),(2,2) and (3,2), we give examples of the concrete computation of the decomposed factors by using the computer algebra system Magma. © 2010 Springer-Verlag Berlin Heidelberg.

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