平成25年度日本シミュレーション学会学会賞 (敬称略)


Large-Scale All-Electron Quantum Chemical Calculation Toward a Sweet-Tasting Protein, Brazzein, and Its Mutants
Y. Yagi (Okayama University of Science) and Y. Naoshima


Parallelization of a local gyrokinetic Vlasov simulation code for peta-scale computing
S. Maeyama (JAEA), T.H. Watanabe, Y. Idomura, M. Nakata, M. Numai, and A. Ishizawa
(JSST2012 OS6-6)

A Novel Massively Parallel Computing Method for Fluid-Structure Coupling Analysis
K. Sugiyama (University of Tokyo), S. Ii, S. Takagi, and Y. Matsumoto
(JSST2012 OS5-4)


Finite Temperature Effect on Structural Changes of Single Crystaline Graphite under Plasma Irradiation
S. Saito (Nagoya University), A.M. Ito, A. Takayama, and H. Nakamura
(JSST2012 OS2-3)


Outstanding Presentation Award(25件)

1.Speaker:Masami Iwase (Tokyo Denki University)
   Coauthor:Hiroshi Ohsaki (Tokyo Denki University)
           Tetsuya Watanabe (Tokyo Denki University)
   Session:Regular Session
T i t l e:Simulation for Analysis of Unicycle Rider with Human-Unicycle Model
Abstract:Riding unicycle is one of human skills requiring practice. A unicycle is unstable, and its practice of unicycle riding may be difficult in many situations for beginners because it becomes relatively terrible and is difficult to carry on continuously. A unicycle simulator has been developed in this project, the dynamics of the simulator can be adjusted according to the skill level of trainee, and then trainee can exercise effectively. As a result, trainee can ride a real unicycle after the short term exercise. A new evaluation how adequately balancing a man rides unicycle is introduced; CP, centre of pressure and MBP, moment balancing point. The profile of CP and MBP can reflect the rider’s skill. The effectiveness of this new evaluation is verified through numerical simulation of stabilization of Human-Unicycle model.

2.Speaker:Masao Nagamatasu (Hokkaido Institute of Technology)
   Coauthor:Akio Nagamatsu (CATEC Inc.)
T i t l e:Introduction of New Analogy between Mechanics and Electromagnetics for Modeling of Electromechanical System
Abstract: A new analogy is introduced in the present paper between mechanics and electromagnetics concerning state values, characteristics, governing laws and energy. First, it is explained that conventional two kinds of analogy concerning the state values are both physically inaccurate, and a physically correct new analogy is presented. Second, new analogies are proposed concerning characteristics, and laws, all of which have not been clear so far. Third, a new analogy is made evident between mechanical energy and electromagnetic energy. Forth, validity of the analogies introduced by the authors is exemplified using single degree of freedom mechanical and electric systems.

3. Speaker:Hiroshi Takahashi (Shonan Institute of Technology)
T i t l e:A Study on Subliminal Attention Guidance Using a Three-Dimensional Head-Mounted Visual Simulator
Abstract:This paper proposes a new warning method for increasing drivers’ sensitivity for recognizing hazardous factors in the driving environment by using the visual driving simulator. In this study, the presentation of visual cue at a lower contrast ratio than that of the background scenery was investigated as subliminal visual information, instead of flashing information quickly. The results of many experiments performed with a three-dimensional head-mounted display show that the response time for detecting a flashing mark tended to decrease when a subliminal mark was shown in advance. A priming effect is observed for subliminal visual information. This paper also proposes a scenario for implementing this method in real vehicles.

4. Speaker:Luis Diago (InterLocus,Inc.)
   Coauthor:Ichiro Hagiwara(Meiji University)
T i t l e:Analysis of Brain Signal During Personel Perception of Facial Images
Abstract:Recent researches have included a physiological monitoring as part of the human–computer interface. Using a thermal camera as a computer peripheral almost the full range of vital signs can be extracted, including localize blood flow, cardiac pulse, and breath rate. On the other hand, since the original demonstration that electrical activity generated by ensembles of cortical neurons can be employed directly to control a robotic manipulator, research on brain–machine interfaces (BMIs) has experienced an impressive growth. In order to go beyond a human-like multimodal analysis of multiple input signals acquired by different sensors, in this paper, we present the spectrum and topographic scalp maps derived from brain signals reflected by the presentation of 20 images to a group of four subjects. Results demonstrate that the spectrum distribution and the simmetry of topographic maps can be used to classify subjects perceptions about facial images.

5.Speaker:Tsutomu Ito(National Defense Academy)
   Coauthor:Singo Tanaka(Yazaki Corporation)
           Hisashi Morishita(National Defense Academy)
T i t l e:Triple Band MIMO Antenna for WiMAX Using Electromagnetic Simulator
Abstract:Folded monopole antenna (FMA) which can cover 2.5/3.5 GHz bands of WiMAX is already reported. In this study, all the three bands of WiMAX are covered by placing a parasitic element in the vicinity of FMA. Furtheremore, two FMAs and parasitic elements are used in order to anlyze the basic characteristics of MIMO antenna using an electromangnetic simulator. As a result, the 3rd band, 5.5 GHz band, is covered by adjusting the parameters of parasitic element without increaseing the total antenna volume. Also, s-parameter propeties show good potential for MIMO antenna.Through the comparison between the simulated and measured results, we confirme the validity of the electromangetic simulator.

6.Speaker:Tsutomu Watanabe(Railway Technical Research Institute)
   Coauthor:Masamichi Sogabe(Railway Technical Research Institute)
           Munemasa Tokunaga(Railway Technical Research Institute)
T i t l e:The Influence on Structure Member Vibration of Railway RC Rigid Frame
Viaduct by the Different Various Parametes Abstract:In recent years, with train speed increasing drastically, we came to be concerned about the generation of the structure-born sound in accordance with the increase of dynamic response of the strucutre member in the railway reinforced concrete rigid frame viaducts where the structure-born sound have been thought to be small until recently. We investigated the influence that various parameters of vehicles and tracks gave to the structure member vibration of the railway reinforced concrete rigid frame viaduct. Specifically, we constructed a numerical analysis model which could effectively analyse structure member vibrations up to 200Hz which are a dominant factor of structure-born sound by finite element methods. Furthermore, we carried out the parametric studies that focus on various parameters of vehicle and track and quantitatively clarified the dominant factor every frequency band.

7.Speaker:Shoichi Furuyama(Toyama National College of Technology)
   Coauthor:Yusuke Maihara(Toyama National College of Technology)
T i t l e:GPU-accelerated Tsunami Run-up Simulation at Toyama-bay
Abstract:High speed Tsunami run-up simulation is achieved by using General Purpose Graphical Processing Unit (GPGPU) at Toyama-bay coastal region. The simulation includes 5 [m] grid size geometry data and 3,341,250 (2,475 x 1,350) grid points are used. The simulation is calculated on the Graphics Processing Unit (GPU) named TESLA K20(NVIDIA) in about 90.6 seconds and it is more than about 78 times as faster as the CPU calculation. The simulation realizes both the high resolutional calculation(5 [m] intervals) and the high performance calculation.

8.Speaker:Naoki Katoh(Kyoto University)
   Coauthor:Atsushi Takizawa(Osaka City University)
           Masaki Inoue(Kyoto University)
T i t l e:An Emergency Evacuation Planning Model Based on the University Quickest Flow
Abstract:In this article, we formalize the emergency evacuation planning model for evacuation from tsunamis and other disasters based on the idea of the universally quickest flow. We show that there does not always exist a universally quickest flow when the capacity constraint of refuges is taken into account. Therefore, we propose an alternative criterion that approximates a universally quickest flow, and presents an algorithm for finding an optimal flow under this criterion. Numerical experiments are carried out for the coastal area of Tokushima City in Japan.

9.Speaker:Sergiu Arapan (National Institute for Materials Science)
   Coauthor:David Bowler (University College London)
           Tsuyoshi Miyazaki (National Institute for Materials Science)
T i t l e:First-principals Simulations of Ge Dimers Absorption on the {105} Facets of a Ge Hut Cluster
Abstract:We have performed ab-initio study of adsorption of Ge dimers on the {105} facets of a Ge hut cluster on a SiGe substrate in order to identify stable nucleation sites. By using a linear scaling O(N) code CONQUEST we have been able to perform realistic quantum mechanical simulations of large systems (~20 000 atoms). We calculated the energy map of single Ge dimers adsorbed on two different facets of an elongated hut as well as investigated the process of facet completion. Our results show that stable sites for adsorption of single Ge dimer are located in the upper part of the hut and that elongated huts have a preferential growth direction. Our findings give support for recent kinetical model of hut growth and provide detailed information about {105} facets nucleation.

10. Speaker:Yasuyuki Suzuki (Osaka University)
   Coauthor:Taishin Nomura(Osaka University)
T i t l e:An Intermittent Cotrol of a Double Inverted Pendulum: Relationship Between Cotrol Strategy and Hip Joint Stiffness
Abstract:Presence of posture sway implies that human upright posture is flexibly controlled. A number of researches have been performed to clarify neural control mechanisms of the human upright standing in which a single inverted pendulum model has often been used as the human body. We have proposed a state-dependent intermittent control as the neural mechanism, and showed that the intermittent control can reproduce the flexible upright posture by the smart usage of unstable dynamics of the saddle type upright equilibrium. However, single pendulum models are not sufficient to discuss about joint coordination among multiple body segments during standing. Therefore, we constructed a double inverted pendulum model with the state-dependent intermittent control and analyzed it. In this presentation, we introduce a theoretical basis of the intermittent control, and then discuss relationship between hip joint passive stiffness and control strategy.

11.Speaker:Hideki Fujii (The University of Tokyo)
   Coauthor:Shinobu Yoshimura(The University of Tokyo)
T i t l e:Direct and Indirect CO2 Emission from Road Traffic
Abstract:Global warming issues have been discussed all over the world. Of the total amount of CO2 emitted in Japan, a transportation sector is responsible for 20%. In the transportation sector, 90% of the emission is due to road traffic. The amount of CO2 must be reduced drastically to realize a low-carbon society. To achieve this purpose, various measures have been discussed. Using electric vehicles is one of measures to reduce the amount of CO2. The effects of the measures must be estimated quantitatively, but now they are simply calculated by macroscopic indicators such as number of cars or sum of travel distance. These conventional approaches neglect the effects of the interactions among many cars. In this study, we estimate the amount of direct and indirect CO2 emission from road traffic by using a multi-agent-based traffic simulator.

12.Speaker:Zhonggang Feng (Yamagata University)
   Coauthor:Tatsuo Kitajima(Malaysia-Japan International Institute of Technology)
           Daisuke Sato(Yamagata University)
           Akao Nakamura(Yamagata University)
           Mitsuo Umezu(Graduate School of Waseda University)
T i t l e:Spontaneous Beat Behavior of Circular Engineered Cardiac Tissue Abstract:Circular engineered cardiac tissue is fabricated by embedding rat embryonic cardiomyocytes into type I collagen matrix.Spontaneous beating is observed and the beat displacement of the top point of the circular arch is measured through an inverted microscope. A five-element constitutive model for this artificial tissue is proposed to analyze the beat behavior, which is composed of an active force generator to simulate the embedded cardiomyocytes, a pre-force mechanism to reflect the residual effect of gel compaction during the fabrication process, and a Kelvin solid model to simulate the passive characteristics of the construct. Meanwhile energy coefficient is introduced to evaluate the pump function of the engineered heart tissue. The analysis shows that this approach can detect active contractile force exerted by cultured cardiomyocytes as small as several micro Newtons and so that can be used as a tool to analyze pharmacological response of engineered cardiac tissue. It also shows that the contraction-relaxation force loop of the artificial tissue resembles auxotonic contraction of its in vivo counterpart; i.e., contractile force increases proportionally with the contraction strain and present a subtle hysteresis as relaxation. Energy coefficient indicates that the pump function of the tissue should be improved substantially because the contractile force of the tissue is mainly counteract the resistance to the contraction from the collagen matrix. These features of the spontaneous beat behavior of the engineered heart tissue are firstly reported in this study.

13.Speaker:Hiroshi Okada (Tokyo University of Science)
   Coauthor:Hiroshi Kawai (Tokyo University of Science)
T i t l e:Fracture Mechanics Analysis System Using the Tetrahedral Finite Elements and Automatic Meshing Technique
Abstract:In this paper, a brief summary of fracture mechanics analyses using the tetrahedaral finite elements and automatic meshing software are presented. The authors have developed methodlogies to compute the fracture parameters accurately based on the finite element model consisting of the tetrahedral fintie element only and also fracture mechanics analysis system using automatc meshing software. In the presentation, we briefly discuss about the outlines of the system and some numerical examples.

14.Speaker:Hideaki Wakabayashi (Okayama Prefectural University)
   Coauthor:Masamitsu Asai (Kinki University)
           Keiji Matsumoto (Osaka Sangyo University)
           Jiro Yamakita(Okayama Prefectural University)
T i t l e: Analysis of Wave Scattering by Dialectric Gratings for Low Graing of Circularly Polarized Incidence
Abstract:In this paper, we formulate the oblique primary excitation and introduce the scattering factors through the analytical method by use of the matrix eigenvalues. The diffraction efficiencies are defined for propagating and evanescent waves with circularly polarized incident waves. At a low grazing limit of incidence, the specular reflection occurs regardless of incident polarization. It is newly found that in a circularly polarized incidence case, the same circularly polarized wave as the incident wave is specularly reflected.

15.Speaker:Masamitsu Asai (Kinki University)
   Coauthor:Hideaki Wakabayashi (Okayama Prefecture University)
           Jiro Yamakita (Okayama Prefecture University)
           Keiji Matsumoto(Osaka Sangyo Univerity)
T i t l e:Constitutive Characteristics of Distributions of Conducting Helices with Helically-Bent Axes
Abstract:The isotropic or anisotropic distributions of perfectly-conducting thin-wire helices with helically-bent axes in free space are analyzed by the quasi-static Lorentz theory and the method of moments to determine the effective medium parameters. The contributions of the electric quadrupole moments in the polarizabilities of the particles are also investigated.

16.Speaker:Daiki Kawakami (Shizuoka University)
   Coauthor:Kaito Makino (Shizuoka University)
           Yuichi Kobayashi (Shizuoka University)
           Toru Kaneko (Shizuoka University)
           Atsushi Yamashita(The University of Tokyo)
           Hajime Asama(The University of Tokyo)
T i t l e:Projector Camera System Presenting Color Information for Color Vision Deficiency
Abstract:There are individual differences in color vision. It is difficult for people with defective cones in the retina to recognize the difference of specific colors. We propose a system using a camera and a projecctor to present color information for color vision deficiency. When there are indistinguishable colors in real objects, the system converts the color to a distinguishable color for projection. The system also produces an image with texture and blinking light when multiple color combinations of indistinguishable colors exist. On projecting the image onto the object, the system equalizes an observed color with a target color by color feedback. Effectiveness of the proposed method is verified through experiments.

17.Speaker:Khairuddin Jaafar (Universiti Teknologi Malaysia)
   Coauthor:Muhamad Kamal M. Amin(Universiti Teknologi Malaysia)
T i t l e: Exploration Strategy for Modeling Simple Adaptive Cruise Control System
Abstract:The intention of this paper is to seek whether an exploration that inspired from biology can be modeled intuitively before the practical implementation work could be done. Such task is suited in Reinforcement Learning (RL). In RL, the learning system must discover by trial-and-error which actions are vital in particular states. Then, the implementation is done on Adaptive Cruise Control (ACC) system. The region of interest in this ACC system is modeled in the integrated form of the front and rear sensors for simplification.

18.Speaker:Eisuke Kita (Nagoya University, Kobe University)
   Coauthor:Wataru Nanya (Nagoya University)
           Hiroshi Kitada (Nagoya University)
           Azusa Hara (Nagoya University)
           Yukiko Wakita (Nagoya University)
           Tatsuhiro Tamaki (Nagoya University)
T i t l e: Road Network Optimization for Increasing Traffic Flow
Abstract:In the traffic flow on the city road network, it is observed that a new additional road, which is constructed for overcoming the traffic jam, causes more terrible traffic jam. This is well known as Braess’s paradox. Recently, it is pointed out that Braess’s paradox depends on the traffic density and the paradox disappears at high traffic density.The aim of this study is to describe the algorithm for increasing traffic amount by changing road network. The algoriothm is applied for simple numerical example. The road networks are determined at different traffic density. The results show that the road network for increasing traffic flow depends on the traffic density and, at high traffic density, the Braess’s paradox may disappear.

19.Speaker:Sachiko Ishida (Meiji University)
   Coauthor:Xilu Zhao (Saitama Institute of Technology)
           Ichiro Hagiwara (Meiji University)
T i t l e: Development of New Perturbation Method with Complementary Terms
Abstract:This paper is related to a theoretical modification to the perturbation method. The conventional perturbation method is widely used to study dynamic characteristics of mechanical and architectural structures, but it can yield reasonable results only when the perturbation given is sufficiently small. Extensive studies have been so far conducted so as to complement the effects of modification in the equation of motion. Whereas the new complemented perturbation method can be coupled with a fairly large perturbation, with the computational accuracy unimpaired, it cannot always be generically used in practice due to the possibly long computational time and the lack of robustness. The present authors thus revisited the method and thoroughly examined their features, to construct such a novel method that the strengths of the present method should be well integrated so as to overcome the above-mentioned shortcomings.

20.Speaker:Shinya Maeyama (Japan Atomic Energy Agency)
   Coauthor:T.-H. Watanabe(National Institute for Fusion Science)
           Y. Idomura (Japan Atomic Energy Agency)
           M. Nakata (Japan Atomic Energy Agency)
           M. Nunami(National Institute for Fusion Science)
           A. Ishizawa(National Institute for Fusion Science)
T i t l e: Optimizations of The Gyrokinetic Vlasov Simulation Code GKV for The K Computer
Abstract:We report the optimizations of the gyrokinetic Vlasov simulation code GKV, which performs five-dimensional CFD calculation by using spectral and finite difference methods, on for the K computer. First, the segmented rank mapping on the three-dimensional torus network is advantageous to utilize the bi-section bandwidth and to avoid collisions of the messages, and, therefore, to reduce communication costs. Second, the uses of the collective communication algorithm optimized for the K computer and of the simultaneous communications on the Tofu interconnect further reduce the communication costs.
Finally,computation-communication overlaps with pipelining methods effectively mask the communication cost. The highly-optimized code improves strong scaling up to ~600 k cores (with the parallel efficiency~99.99994%), and demonstrates its applicability and efficiency for the peta-scale computing.

21.Speaker:Yujing Liao (Meiji University)
   Coauthor:Fang Xu (Meiji University)
           Xilu Zhao (Meiji University)
           Ichiro Hagiwara (Meiji University)
T i t l e: A Region Based Automatic Point Cloud Registration Method
Abstract:This paper proposes a kind of point cloud region based automatic point cloud registration algorithm to make registration batter. The proposed method working for doing an initial registration and extracting point cloud region feature fast. The features of the point region are used for matching point cloud regions. Matched regions sets are classified for calculating transform matrix of initial registration. Based on the initial registration result the Iterative Closest Point (ICP) algorithm [1] which had been used for accuracy registration to composite point cloud pairs will be applied.
The proposed registration approach is able to do automatic registration without any assumptions about their initial positions, and avoid the problems of traditional ICP in bad initial estimate. The proposed method plus with ICP algorithm provides an efficient 3D modeling for computer-aided engineering and computer-aided design.

22.Speaker:Hugo Akitaya (University of Tsukuba)
   Coauthor:Jun Mitani (University of Tsukuba)
           Yoshihiro Kanamori (University of Tsukuba)
           Yukio Fukui (University of Tsukuba)
T i t l e: Origami Diagrams and 3D Animation from Flat-Foldable Crease Petterns Sequences
Abstract:Origami is the art of folding paper. It is a simple way of constructing geometric shapes from a single sheet of paper without using any cuts. There are two usual forms to document an origami model; diagrams and crease patterns. Diagrams are the step-by-step sequences that can be found in traditional origami books while crease pattern is the pattern of creases left on the paper after folding an origami model. The disadvantage of crease patterns is that it is difficult to use them to re-create the design, since crease patterns show only where each crease must be made and not a step-by-step instruction. However, drawing diagrams is tedious and very time-consuming. We propose a method to autonomously generate the corresponding diagram for a crease pattern sequence. Each element of the sequence represent the state of the paper in a certain origami step. We construct a sequence of steps, also generating an animation to show the transition between steps, thus helping novice origamists.

23.Speaker:Takashi Washio (Osaka University)
   Coauthor:Yukito Iba(The Institute of Statistical Mathematics)
T i t l e: Rare Flood Scenario Analysis Using Observed Rain Fall Data
Abstract:Social demand to formulate strong software oriented counter measures including evacuation planing and education of residents for extremely rare but large scale disasters is now increasing through experiences Sumatra-Andaman earthquake in 2004 Japanese Tohoku earthquake in 2011. However, most past studies have not addressed hazard and risk analyses on such disasters including floods, earthquakes and volcanic eruptions, because of their very low probability against the cost needed for their hardware oriented counter measures and the difficulties of the quantitatively or even qualitatively valid analyses under their appropriate assumptions. In this study, we focus on large scale river flood disasters, propose a hazard analysis scheme to automatically generate extremely rare and complex hazardous scenarios evaluate their probability. We employ a probabilistic search technique of extremely rare events named replica exchange Monte Carlo (REM) together with a probability distribution of observed data on rain fall scenarios. We apply this schme to seek feasible but severe flood scenarios of Chikugo River in Japan and evaluate their probability.

24.Speaker:Sekson Timakul (King Mongkut’s Institute of Technology Ladkrabang)
   Coauthor:Somsak Choomchuay (King Mongkut’s Institute of Technology Ladkrabang)
T i t l e: Non Binary LDPC with Cyclic Redundancy Check
Abstract:This paper proposes an error correction technique for non binary LDPC code. The CRC is employed to detect each symbol in a codeword. The sysmbol error posibility is adjusted in prior before decoding by fast fourier transform sum product algrithm. This new technique yields improvement in BER performance.

25.Speaker:Worapong Tangsrirat (King Mongkut’s Institute of Technology Ladkrabang)
   Coauthor:Teerasilapa Dumawipata (King Mongkut’s University of Technology North-Bangkok)
T i t l e: Simple Floating Immittance Simulator Using Single DVCCTA Abstract:This paper presentes a simple floating immittance simulation circuit employing only one differential voltage current conveyor transconductance amplifier (DVCCTA) and two grounded passive components. The proposed floating simulator circuit can realize floating inductor, capacitor or resistor depending on the passive element selection. The equivalent value of the realized simulator can be tuned electronically through the transconductance parameter of the DVCCTA. The circuit also does not require any realization conditions. The proposed simulator circuit together with its applications are demonstrated using PSPICE simulation with 0.5μm MIETEC CMOS technology.

Student Presentation Award(15件)

1.Speaker:Rony Teguh (Hokkaido University)
   Coauthor:Ryo Murakami (Hokkaido University)
           Takahiro Sato (Hokkaido University)
           Hajime Igarashi(Hokkaido University)
   Session:Regular Session
T i t l e:Optimization of Router Deployment For Wireless Sensor Networks Abstract:This paper presents the optimization of router deployment for Wireless Sensor Networks(WSN).The sensor nodes in the WSN are placed appropriately to measure environmental data. The sensed data are transfered from the sensor nodes to a base station via the routers, whose deployment has great effects on networks connectivity and lifetime performance. In this work, the router deployment is optimized to maximize the lifetime of WSN using the genetic algorithm.

2.Speaker:Koichiro Tsuchida (Meiji University )
   Coauthor:Kanako Ueno(Meiji University, Japan Science and Technology Agency)
           Sotaro Shimada(Meiji University, Japan Science and Technology Agency)
T i t l e:Brain Activity Related to Action- and Non-action Related Sounds in a Three-dimensional Sound Reproduction System
Abstract:The mirror neuron system (MNS)is the brain region that is activated when seeing the sight or hearing the sound of another’s action. We investigated whether the mirror neuron system shows differential activation for action-related and non-action-related sounds and whether it is susceptible to the quality of the sounds. In this experiment, we used a three-dimensional sound field reproduction and recording system based on the boundary surface control principle(BoSC). Mu-rhythms of EEG over the sensorimotor cortex (Fz,Cz,C3 and C4 electrodes) were recorded throughout the experiment. The results showed significant differences between action-related and non-action-related sounds at Cz and C3 through 62-ch loudspeakers.We found a significant difference between 1-ch and 62-ch loudspeakers when subjects listened to action-related sounds. These results confirm that the mirror neuron system is activated in a three-dimensional sound reproduction system when we listen to action-related sounds.

3.Speaker:Ahmad Bazzi (Gunma University)
   Coauthor:Yoshikuni Onozato(Gunma University)
T i t l e:Automatic Detection of Malicious PDF Files Using Dynamic Analysis
Abstract:Malicious non-executable files are being increasingly used to break into users' computers. Anti-virus solutions fail to detect all the malicious files. We propose using machine learning to process the reports generated by a dynamic analysis system. We implement a preliminary model, and despite its simplicity, we achieved a 97.45% prediction accuracy. The model can be further improved to reach a higher detection rate or it can be used in conjunction with an anti-virus solution in order to improve the detection rate of malicious documents.

4.Speaker:Katsuya Mouri (National Defense Academy)
   Coauthor:Naobumi Michishita (National Defense Academy)
           Yoshihide Yamada (National Defense Academy)
T i t l e:Finite Element Analysis of Small Dipole Antenna Surrounded by Negative Epsikon Shell
Abstract:To miniaturize the antenna, the shape variation and the wavelength shortning methods have been proposed. When the antenna is miniaturized, the antenna characteristics deteriorate. In the input impedance, the resistance value decreases and the reactance value increases. The radiation efficiency decreases, and the bandwidth becomes norrowers.Moreover, the matching circuit is required. Even in the case of using the wavelength shortening, the radiation efficiency decreases due to the dielectric or magnetic losses. Recently, Ziolkowski has reported the small dipole antenna with a negative epsilon(ENG) shell structure. This paper presents the finite element analysis of the small dipole antenna with the ENG shell. First of all, the configulation of the ENG shell structure and the relative gain are clarified. The input impedance and the near field distributions are also shown.

5.Speaker:Chompoonuch Jinjakam (Tokai University)
   Coauthor:Kazuhiko Hamamoto (Tokai University)
T i t l e:Comparative Measurements Between Heartbeat Rate and Simulator Sickness Questionnaire for Simulator Sickness in Immersive Virtual Environment
Abstract:The immersive virtual environments affect simulator sickness to some users. The simulator sickness can be measured by both objective and physiological measurements. The objective measurement or self-report use questionnaires and answered by the subjects. On the other hand, the physiological measurements use medical equipments. This research study the relationship between simulator sickness questionnaire and electrocardiogram results in heartbeat per minute. The results show that only nausea is related to heartbeat rate. However, oculomotor and disorientation are not related to heartbeat rate. Furthermore, the most significant factors are height different effect, position effect and parallax effect, respectively.

6.Speaker:Marlon Arce Acuna (Tokyo Institute of Technology)
   Coauthor:Takayuki Aoki (Tokyo Institute of Technology)
T i t l e:AMR Multi-GPU Accelerated Tsunami Simulation
Abstract:Tsunamis are natural disasters that represent a real and dangerous threat specially to countries with coasts along the Pacific Ocean. At the light of the tragic events of the 2011 Earthquake and Tsunami in Japan the importance of predicting this phenomenon has gained great relevance. In order to simulate a Tsunami the Shallow Water Equations (SWE) are used, these equations although reliable can be very costly in computational terms. In order to obtain an accurate and fast result we introduce GPGPU to solve these equations, this new technology allows us to program GPUs to obtain dramatic boosts in performance. We use the CIP-CSL2 semi-lagrangian and the Method of Characteristics to solve numerically the SWE. In order to push the envelop on performance we develop a Multi-GPU simulation on Tsubame 2.0 and to handle large scale domains (like the Pacific Ocean) we introduce an Adaptive Mesh Refinement (AMR) technique. In this way we can save memory usage from between 20 to 40% less than if not AMR was used and moreover we can obtain high performance and good scalability from the Multi-node GPU simulation,313GFLOPS for single GPU and currently about 1.2TFLOPS for Multi-GPU with 128 cards.

7.Speaker:Shunsuke A. Sato (University of Tsukuba)
   Coauthor:Kazuhiro Yabana(University of Tsukuba)
T i t l e:Maxwell+TDDFT Multi-scale Simulation for Laser-matter Interaction
Abstract:We develop a theoretical framework and a computational method to describe interactions between an intense laser field and a solid. The laser electromagnetic fields are described by the Maxwell equations, while electron dynamics in a unit cell of the solid is described by the time-dependent density functional theory (TDDFT). Since there are two different spatial scales, one is that of the laser wavelength which is typically a micro-meter and the other is that of electron dynamics in solids which is less than nano-meter, this is a multi-scale problem. We solve the coupled dynamics using a finite difference method in space and time, preparing two spatial grids of different spatial resolutions. To illustrate our multiscale simulation, we show an intense laser pulse irradiating, reflecting, and penetrating a diamond thin film. We also show that high parallel efficiency and computing performance are realized in our compulational code.

8.Speaker:Akihiro Yamada (Tohoku University)
   Coauthor:Y. Shiraishi(Tohoku University)
           H. Miura(Tohoku University)
           M. H. Omran(Tohoku University)
           T. Shiga(Tohoku University)
           Y. Tsuboko(Tohoku University)
           T. Yambe(Tohoku University)
           M. Yamagishi(Kyoto Prefectural University of Medicine)
           D. Homma(Toki Corporation)
T i t l e:Calculation of Pulsatile Flow Characteristics in the Mechanical Circulation Assist Device for Fontan Circulation
Abstract: We have been developing a pulmonary circulatory assist device using shape memory alloy fibres for Fontan circulation. It consisted of several shape memory alloy fibres, which covered the ePTFE conduit circumferentially. We designed the sequential motion control system for pulsatile flow generation for sophisticated pulmonary hemodynamics. In order to achieve physiological pulsatile flow assistance in pulmonary arterial system, we fabricated a peristaltic mechanical structure by sequential contraction of shape memory alloy fibres. Then, we achieved to generate pulsatile flow by a sequential contraction of the assist system, which could reproduce the wall contrition velocity at 6.0 to 20.0 cm/sec. We examined hemodynamic characteristic of its function using a mock circulatory system. In this study, we calculated the Womersley numbers by the results derived from the mock experiment. As a result, the pulmonary circulation assist device with the sequential contraction might generate effective pulsatility in pulmonary arterial flow.

9.Speaker:Shinya Tomizu (Kyoto University)
   Coauthor:Takeshi Mifune(Kyoto University)
           Takeshi Iwashita(Kyoto University)
           Tetsuji Matsuo(Kyoto University)
T i t l e:Utilization of Tree and Co-tree Decompostion for Implicit Error
Correction inT-Ω Formulations Including Fake Conductors Abstract :Our previous work implied that an implicit error correction (IEC) method could improve the convergence property of iterative solvers for T-Ω formulations including fake conductors. We discuss the determination of the auxiliary matrix in the IEC method by utilizing tree and co-tree decomposition.

10.Speaker:Shin Nagata (Meiji University)
   Coauthor:Junya IRIE (Meiji University)
           Hiroyuki KAMATA (Meiji University)
T i t l e:The Scalable Crater Detection Using Gray-level Histogram Abstract:We propose a method of detecting craters from the image of the lunar surface captured by the small space probe. This paper assumes that our research applies to SLIM (Smart Lander for Investigating Moon) Project aiming at the pin-point landing to the lunar surface. We use the principal component analysis (PCA) to detect craters, and we apply image region segmentation as a pre-process method to limit the target area of PCA. Moreover, we estimate approximate a crater size from region’s pixel count.

11.Speaker:Aimi Zafiran Mohamed(Universiti Teknologi Malaysia)
   Coauthor:Muhamad Kamal M Amin (Universiti Teknologi Malaysia)
T i t l e:Biologically Inspired Analysis on Thermal Image Segmentation by MATLAB
Abstract:Examining human skin condition with thermal images offer easier finding of lesion and abnormalities concerning temperature adjustment, e.g. fever screening, superficial lesions and tumor detection. Lesions, however has can cause many consequences, whether to grow as other abnormalities such as precancerous or malignant tumors. In the development era of technologies, a technique is introduced to work with the images obtained from thermal camera. In this paper, we have experiment Indexing Analysis using MATLAB Software. This technique is used to segmenting the image into few individual numbered blocks. A study of normal breast thermal image is used in this experiment and the result is observed under RGB color mode. Skin temperature on breasts area is observed and segmentation is done to sixteen blocks of three by three matrix size. Lesion can be seen respectively to the blocks of images and focus can be concentrated to the affected area or block.

12.Speaker:Kazuaki Tanaka (Waseda University)
   Coauthor:Makoto Mizuguchi (Waseda University)
           Kouta Sekine (Waseda University)
           Akitoshi Takayasu (Waseda University)
           Shin'ichi Oishi (Waseda University, JST)
T i t l e:Estimation of an Embeding Constant on Lipschitz Domains Using Extension Operators
Abstract:This talk proposes a numerical method to estimate an embedding constant from H1 (Ω) to Lp (Ω). The domain in consideration is a Lipschitz one; see the de_nition in the context. The proposed method derives the estimation using an extension operator from Wk;p (Ω) to Wk;p (Rn) and the best constant in Sobolev inequality. This estimation is important for veri_ed computations of solutions to elliptic boundary value problems. In this talk, an application to veri_ed computations for semilinear elliptic boundary value problems on bounded polygonal domains is presented. This application is based on the Newton-Kantorovich theorem.
An approximate solution to target problems is obtained by finite element method. The Newton-Kantorovich theorem proves local existence of the exact solution in a neighborhood of the approximate solution.

13.Speaker:Kenichi Terashima (Fukushima University)
   Coauthor:Kenji Suzuki (Fukushima University)
           Katsuhiko Yamaguchi (Fukushima University)
T i t l e:Minor Loop Analysis Using Monte Carlo Simulation for Clusters with Various Magnetic Site Densities
Abstract:Magnetic granular systems have been applied to many fields of study, e.g. spin glass properties or magnetic resistance phenomena. These magnetic granular system have homogeneous densities of magnetic granules and there physical properties changes depending on its densities. In this study, to investigate magnetic properties of such granular systems, minor loop analysis was performed using Monte Carlo simulation. As the granular systems, clusters with various magnetic site densities were constructed by simple diffusion model. Moreover, these clusters were analyzed from new point of view which is a concept of a “colony”. The results of minor loop analysis were considered associating with colony.

14.Speaker:Nguyen Thai Tat Hoan (Meiji University)
   Coauthor:Kousuke Terada(Fukushima National College of Technology)
           Sunao Tokura (Tokura Simulation Research Corporation)
           Ichiro Hagiwara (Meiji University)
T i t l e:Application of Metal Bending to Forming Process of Truss Core Panel Abstract:Although honeycomb panel is widely used in various structure, its adhesive to glue honeycomb core and plate may burn by fire, leading to the requirement of another lightweight and high stiffness panel. Recently, we have developed truss core panel’s structure that has equivalent bending stiffness as honeycomb panel, stronger in shear and safer in a fire than honeycomb panel. However, it is difficult in general to form truss core. Multi-stage forming process was investigated, but it cannot manufacture high aspect ratio structure because of the limit of forming process. The main objective of this research is to develop a new process for Truss core panel by using bending method, suggesting a ability to manufacture a wider range of structure than before. In this paper, firstly the comparison between two different ways of punch arrangement is discussed. Then we evaluate the effectiveness of a springback reduction method by increasing pressure from the punch to the material.

15.Speaker:Naoya Tsuruta (University of Tsukuba)
   Coauthor:Jun Mitani (University of Tsukuba)
           Yoshihiro Kanamori (University of Tsukuba)
           Yukio Fukui(University of Tsukuba)
T i t l e:An Exploring Tool for Simple Flat Origami based on Random Foldings
Abstract:In flat-foldable origami, design techniques represented by the circle-river packing approach are effective for complex models but are not suitable for simple models. In this paper, we propose a system for generating simple origami pieces that can be made with a samll number of folds. A fold in origami can be classified into two categories: exact fold(if its position is based on exact reference landmarks) and inexact fold (if its location is not based on exact reference landmarks). Our system calculates exact folds based on origami constructions and inexact folds by moving the exact ones with the Monte Carlo method. The system displays dozens of tiny folded origami pieces at once. By selecting a desired model, the user can obtain the origami instructions to recreate it on real paper.