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An Island Approach to the Territorial Disputes over the Senkaku / Diaoyu /Tiaoyutai Islands
Hiroshi Kakazu, Ph. D. 세계환경사회거버넌스학회 2016 World Environment and Island Studies Vol.6 No.1
The uninhabited Senkaku islands, which have been administered by the Okinawan local government, have been claimed by Japan, China and Taiwan. The vicinity of the disputed islands has long been identified as possessing potential oil and gas resources. The territorial disputes have been intensified after the Japanese government nationalized the islands in 2012. The situation has been regarded as the most serious for Sino-Japanese relations in the post-war period in terms of the risk of militarized conflict. The Chinese government used “core interests” to describe national sovereignty over the islands which it will make no compromise at any price, while the Japanese government hardened its stance by insisting that there is no territorial dispute to negotiate with China over the islands. The peaceful settlements on the disputed islands are complicated because it involves history, economy, security and nationalism. This paper argues that the best way to ease territorial disputes will be to create a common economic zone based on mutual understanding and economic interests through the wisdom of the islands of Okinawa and Taiwan based on a growth triangle (GT) approach. China has been claiming that the disputed islands are under Taiwan’s jurisdiction. Both Japanese and Chinese central governments should leave all powers to both Okinawa and Taiwan governments for peaceful, joint development of the disputed waters.
Modeling the Human Memory in Nerve Fields
Osamu FUJITA,Yukinori KAKAZU 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
This paper describes the modeling of human memory using a nerve field model which is proposed for modeling the mechanism of brain mathmatically. In our model, two phases of memory, retention and recollection, are focused on. The former consists of two stages, short-term memory (STM) and long-term memory (LTM). The proposed model consists of three parts, the STM Layer, LTM Layer and the Intermediate Layer between them. Each of these is constructed by a nerve field. In the STM Layer, memorized information is retained dynamically in the form of the reverberating states of units within the layer, while in the LTM Layer, it is stored statically in the form of structures of the weight on the links between units. the Intermediate Layer is introduced to translate this dynamic representation in the STM Layer to the LTM Layer, and also to extract the static information from the STM Layer. In addition to this, we consider the recollection of information stored in the LTM. Finally, the behavior of this model is demonstrated by computer simulation.
An Approach to Visual Pattern Recognition by Neural Network System
Yasuhiro HATAKEYAMA,Yukinori KAKAZU 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
In this paper, a visual pattern recognition system is proposed, which can recognize both a pattern and its location. This system, referred to as the expanded neocognitron, has the following capabilities; (1) A higher performance in extraction of features, and (2) A new capability for recognizing the locations of patterns. This system adopts the learning and recognizing mechanism of the neocognitron. First, the ability to classify pattern is enhanced by improving the mechanisms of feature extraction and learning algorithm. Second, the function of detecting the location of each pattern is realized by developing an architecture which does not reduce structure, i.e., the unit density is constant all the way from the input stage to the output stage.
Loss evaluation of AC filter inductor core on a PWM Converter
T. Shimizu,K. Kakazu,K. Takano,H. Ishii 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper presents a core loss evaluation of AC filter inductor used on PWM converters. In order to increase the power density of the converters, high-frequency switching techniques have been applied. However, because of the limitation of cooling capability, reduction of volume of the passive components, especially the magnetic components, are limited. In order to overcome the problems, it is necessary to evaluate the loss of the magnetic components. However, conventional iron loss evaluation method, such as Steinmetz equation, cannot possible to evaluate the core loss, because those cannot take the dc-bias magnetizing condition into account. The authors have been proposed two kinds of iron loss evaluation method, the one is “a loss-map method” and the other is “an inductor loss analyzer (ILA)”. A distinctive feature of those methods is that one can know the iron loss during each switching period on the PWM inverters. Also, former one is suitable for accurate calculation of the core loss in designing process, and the later one is suitable for measuring the core loss on the practical system. By using those methods accurate design and evaluation of the iron loss can be made, and hence high power density design of the converters is realized. In this paper, firstly, a loss-map method which enables to calculate the iron loss of the ac/dc inductor in each switching period of the PWM inverter is briefly described. In the next section, an accurate measuring method of the iron loss of the ac filter inductor operating in a real PWM inverter is described. And it is proved that calculated and measured results coincide well. In the final section, iron loss characteristics of the ac filter inductor with various operating conditions of PWM inverter are discussed.
AN APPROACH TO MODELING A BIONIC SELF ORGANIZATION AND FUNCTIONAL EXPRESSION
Hiroshi YOKOI,Yukinori KAKAZU 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
This study is concerned how to construct a model of life as physical/mathematical representation. This model is called here a bionic model and vibrating potential field is introduced as fundamental world background of the model. Namely, required information creating/processing/controlling are done on this field. Especially this paper reports how to realize the simulation of a bionic self organization and its functional expression based on the mutual actions among a set of life units.