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Improvement of a Computation Method of Stackelberg Solutions for Two-level Nonlinear Programming Problems Based on PSO Using Strategic Oscillation
Get PDFapplication/pdfIn the present paper, the derivation of Stackelberg solutions for two-level nonlinear programming problems (TLNLPPs) including two decision makers with different priorities is focused on. In order to obtain (approximate) Stackelberg solutions to TLNLPPs more efficiently, we attempt to improve the performance of a PSO-based method using strategic oscillation.conference pape
Development of Web Interface for Efficient Management of Electronic Documents
Get PDFapplication/pdfThe change from print to electronic media enabled facile management of huge quantities of information, but the approach of information management has not been enough. This paper develops web interface for the system the authors have previously developed, which is capable to be easily operated for efficient management of electronic documents. The developed system simulates the condition of which all members of organization share document management by storing all electronic documents in one central integrated database. The proposed web interface provides tagging function with many different types for a part of an electronic document in the database. Besides, a mechanism to make possible to check, add, edit, and remove keywords in the dictionary for morphological analysis from user-side via web system was developed to improve the accuracy of tagging. The proposed system uses the original dictionary data constructed through the interaction between users and the system for not only accuracy improvement of tagging, but also efficient management of electronic documents. This paper mainly shows the operation example of the proposed system which has been used for sharing e-mail documents broadcasted for members of a society within the author's laboratory.conference pape
A study on an improvement of communication efficiency in a large-scale data acquisition system
Get PDFapplication/pdfA data acquisition, DAQ, system with using the Internet technology is used in many fields these days. But the Internet is a general purpose technology and suitable to transfer data randomly. Moreover, as a lot of clients and servers are connected into the Internet, the network topology of it is N to M, i.e., the N source computers are connected into the M destination ones. On the other hand, the topology of DAQ systems is based on N to 1, because a measurement is performed with using several detectors and their data have to be sent to one destination computer to analyze them. The Internet technology is not efficient for transferring in N to 1, and such traffic occurs congestion in the network. We, therefore, focus on congestion control mechanisms in the TCP protocol to avoid the congestion and propose the efficient mechanism for a large-scale DAQ system.departmental bulletin pape
Study on strengthening method of exposed base-column in braced frame by horizontal displacement constraint plate
Get PDFapplication/pdfExperimental study on the exposed column-base with the horizontal displacement constraint plate subjected to tensile axial force of the brace member was carried out to make resistant stress of each anchor-bolt clear and to examine the design method of the constraint plate. The function of the constraint plate can realize the resistant mechanism that existing anchor-bolts resist the vertical force and hole-in anchor-bolts resist the horizontal force. The strengthening method of the exposed column-base by the constraint plate assists the column-base with the brace member.departmental bulletin pape
Design of A Spherical Reflector Antenna with Shaping Reflectors
Get PDFapplication/pdfIn a spherical reflector antenna consisting of a main reflector with spherical surface, a sub-reflector with non-quadric surface to correct spherical aberrations and the primary feed horn, the amplitude distribution in the main reflector is inverse tapered and good radiation characteristics cannot be obtained. In order to control the amplitude distribution two reflectors, namely a shaping sub-reflector and a shaping additional reflector between the main reflector and the primary feed horn are necessary, we reported the reflector shaping method. In this paper, we show the design results of the spherical reflector antenna based to the reflector shaping method.departmental bulletin pape
Detection Car Ahead Using Horizontal Edge-Histogram in an In-Vehicle Monocular Camera Image
Get PDFapplication/pdfIn recent years, the development of the driving support system for the car, is an important subject. Especially development of the driver assistance system which combines an in-vehicle camera with image processing technology is an interesting subject. In this paper we described a basic technology for the driver assistance system using in-vehicle monocular camera, which detects the car ahead in the in-vehicle camera image. This paper presents following two algorithms. (1) Algorithm to generate search area for the car ahead, based on a virtual running space. (2) Algorithm to detect car ahead using template-matching applied to horizontal edge-histogram.departmental bulletin pape
A Study of Differences of Teaching Method in Humanities and Natural Science by Differences of Study Structure : Proposal of Ideal Way of Scientific Education at University in the Future
Get PDFapplication/pdfThe type of the injection of knowledge of the build-up approach is taught in the field of natural science in many cases as usual though the author instituted the introduction of the technique of class in which the student participates from such a viewpoint before into the scientific education. It was thought that there was a difference in the study system of natural science with the humanities society about this cause. In the humanities social-affiliated subject, various approach methods are possible. Academic accumulation might not be necessarily needed. The approach method was limited to demand the piling, and the injection education of the packing type of the old model was done for this as a result in the natural science subject. Moreover, this teaching method was able to be done in formalism even by the class to the student of the major and the class to non-major student. The natural science education necessary for the university education in the future is that whether oneself embraces an opinion for the promotion of the science literacy, that is, the science and technology society, and talent who can declare it promotes it.departmental bulletin pape
Study on Ultrasonic Vibration Rings with Piezoelectric Elements Embedded Inside (2) : Excitation of in-plane/out-of-plane flexural vibration using the piezoelectric elements for longitudinal vibration
Get PDFapplication/pdfIn previous works, the authors have proposed a new method to excite the ultrasonic vibration in a metal ring. The system composed of four pairs of piezoelectric elements for torsional vibration embedded in four arcuate metal blocks has designed via finite element analysis to operate with the out-of-plane vibration mode and its traveling wave. This paper presents the method to excite in-plane/out-of-plane flexural vibration mode in an annular vibration system using the piezoelectric elements for longitudinal vibration. The system for 7th vibration mode, composed of 3-mm thick piezoelectric ceramics embedded in four 140-mm diameter aluminum blocks, was analyzed theoretically.departmental bulletin pape
Artificial Class Models Based on Multi-Agent Systems
Get PDFapplication/pdfBullying at school is one of important social problems to be solved. However, it is very difficult to observe or control actions of students in actual schools. Thus, Maeda et al. made an agent-based model for a process building the friendship among a group and have considered and researched the generation mechanism of isolated or excluded agents regarded as potential victims of bullying. In this paper, we summarize existing their researches and discuss the future problems.conference pape
Investigation of the Changes of Users Activities on Twitter around the Great East Japan Earthquake
Get PDFapplication/pdfTwitter has constantly delivered the time-dependent huge amounts of text data, and everyone can easily obtain the published data with Internet. The characteristic of Twitter has been expected to be effective for the usage at the time of disaster. However in Twitter, there have been various kinds of information and also the volume is extremely huge, so it has been difficult to utilize Twitter for the purpose of emergency response as long as Tweets are not classified depending on these contents. Therefore before we discuss about the possibility of Twitter for the network infrastructure in emergency situation, we need to show what type of Tweets distribute in Twitter and what purposes do the users use Twitter. This paper analyzes the changes of users activities under emergency situation by using the data around the Great East Japan Earthquake distributed in Twitter. The difference of usage between before and after the earthquake is addressed to discover the knowledge of disaster with the analysis implemented by Apache Hadoop and Mahout.conference pape