- Principal Investigator: Yong Liu
Title: A New Balance Ensemble Learning for Neural Network Ensembles
Generally speaking, data used in learning can fall into two groups of well-learned
data and not-yet-learned data during learning depend on whether learners have
learned the data or not. In the balanced ensemble learning, on those learning data
where the ensemble has learned well, learning error functions for all learners in
the ensemble would be changed to punish each learner from learning those welllearned
data any further. Such change in learning error functions could allow the
ensemble to have a little larger error values, i.e. a little larger difference between
the target output and output of the ensemble in the case of the mean squared
error, on those well-learned data so that the ensemble could shift its attention
away from learning those well-learned data. Meanwhile, on those learning data
where the ensemble has not yet learned, enlarged learning signals are given to each
learner so that the individual learners in the ensemble could focus on those not-yetlearned
data. Through shifting learning away from well-learned data and focusing
learning on not-yet-learned data, an adaptive error balancing could be achieved in
This research is quite different from previous work in ensemble learning. Most previous
work on ensemble learning did not acknowledge or exploit the issues of how
learning error functions should be adapted in the learning process, how individual
learners interacts with the integration, and how such adaptation in learning error
functions and interaction among learners can be used to influence and guide the
learning of individual learners. Human often seem able to greatly reduce the time
required to learn by communicating and working together in groups. The adaptive
error functions proposed in this research provide a practical way for a neural
network ensemble to communicate hypotheses and/or other information learned in
each individual neural network in an attempt to converge to the learning target
Two edited proceedings and two referred international papers have been published
from this project:
1. L. Kang, Z. Cai, X. Yan, Y. Liu (eds.) Intelligence Computation and Applications,
Proceedings of the third International Symposium on Intelligence Computation
and Applications, Lecture Notes in Computer Science, Vol. 5370, Springer,
862 pages, 2008. Edited proceedings.
2. Z. Cai, X. Yan, Y. Liu, L. Kang, Progress in Intelligence Computation and
Applications, China University of Geosciences Press, ISBN 978-7-5625-2303-1, 370
pages, 2008. Edited proceedings.
- Principal Investigator: Steven Tripp
Title: Grammar of Space: A Semantic Approach
Previous research on descriptions of scenes (Tripp, 2006) indicated that students
preferred absolute descriptions over relative and intrinsic descriptions when communication
direction in English, but not in Japanese. The present research proposal
involves three variations on previous studies. First, students navigate in the
real world. Second they will discover, rather being shown, the locations that were
the object of the experiment. Third they will describe motion in addition to directions.
Locations will be programmed into a GPS device or a tablet computer
running a navigation program. Students will be shown how to use the device to
navigate to the example locations. Using the GPS device for navigation, students
will discover the locations of several waypoints. After freely navigating on campus
to the locations, students identified the locations by drawing them on a map,
and then again by pointing to the locations from various assumed positions. Response
time and direction of pointing were recorded. Finally, students were asked
to describe in writing the discovered locations from other assumed locations, using
either English or Japanese. Results showed that, although students found pointing
to different locations from assumed locations approximately equally difficult; they
showed a preference for using absolute terms of reference when writing English directions.
When writing in Japanese, intrinsic and relative terms of reference were
more frequent than when writing in English.
- Principal Investigator: Jonathan William deHaan
Title: Language Learning with Computer Play and Computer Game Design
One main purpose of this project is to develop our students’s English and technology
skills. Additionally, I want to understand how students learn English while
playing computer games, and to understand how students use English as they learn
to design computer games. There are two goals in this projects. Gial 1) Promoting
and Researching Computer Game-Based Language Learning. Goal 2) Instructing
and Researching Language Learning Through Computer Game Design.
- Principal Investigator: Victor Ryzhii
Title: Graphene - New Material for 21 Century Electronics: Theoretocal and Numerical
Studies of Novel Graphene Devices
Features of physical processes in graphene affecting the device operation were considered,
in particular, energy relaxation of nonequilibrium carriers under interband
photoexcitation, effect of Coulomb scattering of carriers in graphene, and photoconductivity
of graphene. Several novel graphene-based devices were proposed and
evaluated using the developed physical and mathematical models. The devices under
consideration include graphene-based field-effect transistors (FETs), graphene
nano-ribbon FETs, and graphene terahertz lasers with optical pumping. Original
software was developed for numerical calculations of device characteristics. Analytical
and numerical studies of the device operation were conducted. The device
characteristics were calculated and the device ultimate parameters were estimated.
- Principal Investigator: Qiangfu Zhao
Title: A Hierarchical system for visualization, analysis, and classification of face
In the previous years, we introduced the nearest neighbor classification tree (NNCTree)
for face/pose recognition and proposed an algorithm for inducing the NNCTrees.
There are several advantages in using the NNC-Trees. First, the NNCTrees
are transparent because the decision process can be transformed directly
to understandable if-then rules. Second, the prototypes used in each NNC are
abstracted mental images, and can be visualized whenever necessary. Third, we
can get the whole picture of the feature space by examining the tree structure.
In fact, the relationships between the nodes of the tree preserve the topological
structure of the feature space.
To reduce the cost for inducing NNC-Trees, we investigated three methods last
year. The first one is attentional learning (AL), which tries to select important data
during learning. The second one is distance preservation (DP), which reduces the
number of times for calculating the distances between the data and the prototypes.
The third one is dimensionality reduction (DR), which reduces the number of
features of the problem space. As for the AL method, we studied two approaches.
The first one is called attentional learning vector quantization (ALVQ), which can
find important data dynamically during learning of the prototypes. The second one
is called attentional R4-rule (ARR), which selects important data before learning of
the prototypes. Experimental results on many public databases show that ALVQ
plus DP is more useful. As for DR, we studied three approaches. The first one is
the linear discriminant analysis (LDA). The second one is a direct centroid (DC)
based approach, and the third one is the centroid based approximation (CBA)
approach. Experimental results show that although DC is of low cost for DR, the
extracted features may not be informative enough, and the total cost for training
is actually higher. It seems that LDA is most suitable for our purpose. The CBA
approach, although theoretically useful, is not good for most databases.
- Principal Investigator: Shuxue Ding
Title: Sparse Representation of Signals
Sparse representation of signals is a most general transformation in the sense that
it is a shortest linear representation for the signal. This representation is based
on the sparsity of signal, which says that most samples of the signal is zero or
near zero valued. This property is of statistics, and the most pure video or pure
audio signals hold such a property. That is, one can introduce a dictionary for
representation of the signals, which includes a group of basic ”bases” or ”words”,
i.e., ”atoms”. By a representation for a group of signals, one can choose several
words from it and can use their combination to represent any signal.
A very attractive feature is that, if a sparse signal is corrupted with noise or
mixed with other signals, it will lose their sparsity or become less sparse. That
is, to represent the signal one need more words from the dictionary. The sparse
representation is just find a signal processing that can recover the pure signal by
requiring the output with a higher sparsity.
In the researches of this year, we have focused on the relation between the sparsity
and the anti-sparsity, i.e. most signal samples are non-zeros. We further applied
this to beamforming problem in telecommunications.
- In the researches of this year, we have focused on the relation between the sparsity
and the anti-sparsity, i.e. most signal samples are non-zeros. We further applied
this to beamforming problem in telecommunications.
Title: Visual Programming and Education Environment for the High-Performance
Sony Playstation 3 and Cell Architectures
The research was devoted in several directions. The first direction was in developing
a WWW-based programming environment in order to support designing,
debugging and implementing different applications basetd on new multi-core architectures
as well as educating and training students in practical work with the
PS3 architecture. The other direction was devoted to design visual programming
tools to improve the Cell programmer ’s productivity as well as allow the effective
program code generation and debugging. As the basis of investigations, we used
the“ movie-based ”visual programming technology representing an algorithm as
an animation movie. The third research direction was in investigating and developing
high-performance parallel Ce ll algorithms for the Tsunami Wave Propagation
Modeling. The Tsunami Wave Propagation module of the Method of Splitting
Tsunami was adapted for different parallel environments including Shared memory
systems using OpenMP, Distributed memory systems using MPI, and the IBM
CELL BE. This kind of problem can be characterized as rather difficult for parallel
fine-grained implementation because of necessity to use intermediate matrix
transpositions in order to keep data streams on a regular level. Nevertheless, we
showed the possibility of a significant acceleration of this problem solution time
for different programming platforms including a modern Cell environment with
non-standard high-performance equipment like Sony PlayStation3.
- Principal Investigator: Naohito Nakasato
Title: A Compiler for High Performance Adaptive Precision Computing
Recently, a number of arithmetic units in a processor is increasing while a growing
speed of clock frequency of a processor is slowing down or even in plateau phase.
As a result, it is normal that a usual office PC has dual core CPU on it. Furthermore,
new processors used for special purpose such as computer graphics, game
console and high performance computing (HPC) reside 8 – 100 computing cores.
This recent trend opens us a new way of computing on such new processors with
multiple computing cores (many-core SIMD computers). To take an advantage of
a SIMD computer, we should program it with a special programming language or
libraries. In addition, each SIMD computer has its own programming language or
special techniques that we need to cope with. To tackle these difficulties, we propose
and implement a compiler program for high performance adaptive precision
computing.In this project, we investigate and implement new compiler software for
easily utilizing many-core SIMD computers.
- Principal Investigator: Hiroshi Saito
Title: An Asynchronous Processor for Embedded Systems
In this project, we designed an asynchronous MIPS processor using Verilog HDL.
Then, we evaluated the processor in terms of latency and area targeting FPGA implementation
using FPGA design tools. Finally, we proposed optimization methods
to improve performance.
- Principal Investigator: Junya Terazono
Title: Construction of WebGIS-based total geospatial data search environment
Mapping enviroment is an essential base for the location-based research in planetary
science as well as terrestrial studies. Web-based geographical information
system (Web-GIS) is now becoming a standard platform for displaying location information.
As almost of all scientific resources are closely related with its location,
the mapping environment should be a platform for not only information display
but scientific production. We started to construct a Web-GIS based platform for
collaboration environment used by planetary scientists.
As a first step, we made some questionnaire for the planetary scientists to know
their demands and requirements for our system. Then, we concluded that the
first implementation for the system should be the security enhancement. In our
implementation, security module ”Gridsite” was used to realize server-wide security
capability. Using this module, Web-GIS based environment has additional security
enhancement without any additional requirements for users’ individual terminals
or web browsers, with flexible security application which is required for scientific
- Principal Investigator: Song Guo
Title: Network Architectures and Protocols for Ultra-Wideband Wireless Ad Hoc
Ultra-Wideband (UWB) wireless transmission is characterized by the use of radio
signals with an extremely large bandwidth. Recent advances in high-speed integrated
circuitry and signal processing ignited a renewed interest in the development
and commercialization of UWB systems for personal communications. While UWB
technology and its potential have been demonstrated by several companies and research
labs in the recent past, the design of cost-effective and low-power UWB
radios that provide high data-rate and/or long range and flexible networking capabilities
remains a technical challenge.
Conventionally, more bandwidth is required for higher data-rate transmission.
However, due to spectral limitations, it is often impractical or sometimes very
expensive to increase bandwidth. In this case, we shall explore the scheme using
the multiple transmit and receive antennas for spectrally efficient transmission. In
particular, we studied the multicast lifetime capacity of energy-limited UWB-based
wireless ad hoc networks using multiple directional antennas by formulating and
solving the corresponding optimization problem. Through both theoretical and
simulation studies, we evaluated the tradeoff between the costs, in terms of the
maximum number of antennas that the networks should support for each node,
and the lifetime improvements by using the multiple antenna technology. The experimental
results show that using two-beam directional antennas can exploit most
lifetime capacity of the networks for both multicast and broadcast communications.
- Principal Investigator: Jung-pil Shin
Title: A Study of Pen Computing
This research is about the usage of electronic-pen with computer and developing
the algorithms for, including oriental brush implementation, signature/writer verification,
and handwriting synthesis.The brush implementation is to realize oriental
brush in computer. Through this system a user can interact with electronic-pen
and computer as if it is the real brush.The signature/writer verification is an authorizing
tool. People can prove him/herself through this system only by writing
own name or just a few characters. We reduced error rates of conventional system
dramatically using newly developed algorithms.The handwriting synthesis is a
system artificially generating a person’s handwriting. Through this system, people
can use their handwritten style characters in personal computers. It is also possible
to characterize personal web-pages with the handwritten style characters.
- Principal Investigator: Keitaro Naruse
Title: ARFID Based Position Detection System for Agricultural Mobile Robots
The objective of this project is to develop a position detection system using RFID
for autonomous mobile robots which are applied to agricultural works. Our results
are summarized as follows:
(1) We have implemented the prototype of RFID based position detection system
and we have evaluated it for the applicability to the agricultural mobile robot. As
the results, it shows that the prototype is very good in functions and remaining
problem is economical cost.
(2) We have developed and evaluated a group control method of multiple mobile
robots, in which each of them determines its motion autonomously communicating
with others to make a stable group. The method shows a good stability and
- Principal Investigator: Hiroyuki Sagawa
Title: Microscopic Study of Unstable Nuclei
The purpose of this project is to understand physical phenomena from quantum
femto system to astrophysical systems by using microscopic models. The scale of
the system is from femto meter to the size of the universe. 2008 was the second
year ofthe same project. Pairing correlations is one of the most important subject
in microscopic quantum physics. We continue to study the pairing correlations in
unstable nuclei by Hartree-Fock(HF)-BCS mode and also HF-Bogolyubov model
solving in the coordinate space. Especially the isospin dependence of the pairing
interaction was applied for the study of excited states in unstable nuclei. We also
pursue possible di-neutron correlations in neutron-rich nuclei. To this end, we solve
the response function ofelectric quadrupole excitation and spin excitation taking
into account the coupling to thecontinuum.
It is known that the response function is very sensitive to the separation energy
of valence neutrons and shows a huge enhancement just above the threshold when
the last neutrons have a very small separation energy less than 1MeV. We study
further correlations among several nuclear matter properties in the Skyrme HF
and relativistic mean field (RMF) models. Linear correlations are found between
neutron skin thickness , the pressure of the neutron matter and also the symmetry
energy coefficient using various Skyrme Hamiltonian and Relativistic mean field
Lagrangians. We will study electric dipole and charge exchange spin-monopole
excitations of 90Zr and 208Pb are in order to extract the neutron skin thickness
and to determine the neutron matter equation of states.
- Principal Investigator: Gennady Nikishkov
Title: Atomic-scale modeling of nanostructures
Atomic-scale finite element procedure for modeling of self-positioning nanostructures
has been developed. Our variant of the atomic-scale finite element method
is based on a meshless approach and on the Tersoff interatomic potential function.
The developed algorithm is used for determination of equilibrium configuration
of atoms after nanostructure self-positioning. Dependency of the curvature radius
of nanostructures on their thickness is investigated. It is found that for thin
nanostructures the curvature radius is considerably smaller than predicted by continuum
mechanics equations. Curvature radius variation with varying orientation
of crystallographic axes is also modeled and results are compared to finite element
continuum anisotropic solution.
- Principal Investigator: Mohamed Hamada
Title: Collaborative Web-based Active Learning Tools with Learning style Index
In this project, a research using web-based active and collaborative learning in
the theory of computation and related fields is introduced. The twofold contributions
of this project are a novel use of existing technology to improve learning
and a longitudinal quasi-experimental evaluation of its use in context. In addition
to introducing a learning style index to enable students finding their learning
- Principal Investigator: Kazuyoshi Mori
Title: Paramentrization of Strictry Causal Stabilizing Controllers
Since stabilizing controllers of a plant are not unique in general, the choice of the
stabilizing controllers is important for the resulting closed loop. In the classical
case, that is, in the case where the given plant admits coprime factorizations, the
stabilizing controllers can be parametrized by the method called Youla-Kuceraparametrization.
However, this parametrization may include stabilizing controllers
which are not causal and may result a direct loop.
We have established alternative parametrizations of stabilizing controllers, that is,
the parametrizations of all strictly causal stabilizing controllers. These parametrizations
include neither any non-causal stabilizing controller nor any direct loop. Partial
result of this result will be published in IEEE Transactions on Automatic
Control (to appear).
- Principal Investigator: Hirokuni Kurokawa
Title: Skill Evaluation Support in Nuclear Power Plant Operator Training
This research is to support BWR Operator Training Center Corp. (BTC), an
organization that develops and implements training of operators of BWR (Boiling
Water Reactor)-type nuclear power plants, to realize quantitative evaluation of its
One issue in quantitative evaluation is the automatic recognition of trainee’s behaviors
and actions while dealing with an accident. The current step of this research
is to find a way for this issue by using computer vision technology.
- Principal Investigator: Hitoshi Oi
Title: Power-Efficient Virtual Machines for Wireless Sensor Networks
Virtual Machines (VMs) have been proposed as an efficient programming model
for Wireless Sensor Network (WSN) devices. However, the processing overhead
required for VM execution has a significant impact on the power consumption and
battery lifetime of these devices.
In this project, we explore the design space for the virtual machine architectures for
wireless sensor node in the current and future implementation technologies. We also
investigate the virtual machine applications that can utilize the proposed design.
This includes the development of library for interfacing the proposed hardware
modules and the main microcontroller on the sensor network node.
- Principal Investigator: Tomoyuki Yamakami
Title: Designing Quantum Protocols to Protect Users’ Confidential and Private
This research is intended to design and test quantum cryptosystems and bring
in a new efficient protocol, which expects a real-life implementation of a privacyprotection
protocol. I will employ, for instance, the notions of quantum list decoding,
limited quantum computing device, algorithmic argument, and ranom access
coding. Moreover, the research will contribute to the advancement of quantum
information technology. This research will ultimately lead us to the better understandings
of quantum mechanics and thus nature itself. Another benefit comes
from applications of my results in different fields of interest, including “locally
decodable codes” in coding theory and “random self-reduction” in computational
- Principal Investigator: Irina Khmyrova
Title: Computer simulation of heterodtructure devices for THz applications based
on equivalent circuit approach
The project was focused on the study of fringing effects as a possible factor limiting
resonant frequency of plasma oscillations in heterostructure devices similar to
high-electron mobility transistor (HEMT). Analytical model based on the concept
of ”gate extension” has been proposed and resonant plasma frequencies in the presence
of fringing have been estimated. Cascaded transmission line model developed
has been used in IsSpice simulation. The results obtained are in good agreement
with experimental data.
- Principal Investigator: Maxim Ryzhii
Title: Computer Simulation of novel nanoelectronis devices
Computer models and original software were developed for numerical simulations
of novel nanoelectronic devices such as High-Electron-Mobility Transistor (HEMT)
structures for terahertz radiation detection and generation, Graphene Nano-Ribbon
field effect transistors (GNR-FET) and structures, and detectors based on quantumwell
structures Analytical and numerical studies of the device operation were conducted
and the device ultimate characteristics were estimated. The project results
were published in 5 papers in refereed journals and presented at international conference.
V. Ryzhii, M. Ryzhii, and T. Otsuji, ”Thermionic and tunneling transport mechanisms
in graphene field-effect transistors”, Phys. Stat. Sol (a) 205, p.1527, 2008.
V. Ryzhii, M. Ryzhii, A. Satou, and T. Otsuji, ”Current-voltage characteristics
of a graphene nanoribbon field-effect transistor”, J. Appl. Phys. 103, p.094510
V. Ryzhii, V. Mitin, M. Ryzhii, N. Ryabova, and T. Otsuji, “ Device model for
graphene nanoribbon phototransistor, ”Appl. Phys. Express vol. 1, p. 063002,
V. Ryzhii, M. Ryzhii, and T. Otsuji, ”Tunneling current-voltage characteristics of
graphene field-effect transistor”, Appl. Phys. Exp. 1, pp. 013001, 2008.
T. Otsuji, T. Suemitsu, H.-C. Kang, H. Karasawa, Y. Miyamoto, H. Handa,
M.Suemitsu, E. Sano, M. Ryzhii, and V.Ryzhii, “ Epitaxial graphene grown on
Si substrate and its applications to electron devices ”, IEICE Technical Report,
ED2008-224, SDM2008-216, (2009-2).
M. Ryzhii, A. Satou, T. Otsuji, and V. Ryzhii, ”Dynamic characteristics of graphene
nanoribbon field-effect transistors”, Ext. Abst. of the 2008 Int. Conf. on Solid
State Device and Materials (SSDM2008), Tsukuba, Japan, September 24-26, 2008,
- Principal Investigator: Wenxi Chen
Title: Estimation of Female Menstrual Cycle from Heart Rate during Sleep
The purpose of this study is to develop an automatic network-based system for
monitoring heart rate during sleep, and to explore an Hidden Markov Model-based
approach to estimate biphasic property throughout the menstrual cycle from a
series of measured heart rate.
- Principal Investigator: Takafumi Hayashi
Title: Information Integration using Messaging Network
This project will study an approach to construct an SOA-based system using a
messaging network. The proposed solution uses a messaging networking, which is
a type of overlay networking. The proposed approach can reduce the complexity
and the maintenance cost of the system, which both makes an information system
vulnerable. Therefore, the proposed approach can contribute to the construction
of a secure information system. The requirements of a messaging network for an
SOA-based system will be examined by using a test-bed system of our laboratory.
The project will study of ”Mash-up” of web services by using messaging network
technologies. We have already constructed the following test-bed systems:
i) Weather-sensors information integration, and
ii) Integration of sight-seeing information in Aizu area.
A ”Messaging Network” refers to a form of network centric approach to enterprise
application integration based on the extensive use of asynchronous messages
together with a collection of well-documented reusable design patterns related to
message handling. This project proposes the use of messaging networks as a foundation
of sensor-data integration. The proposed scheme provides
(a) Authentication/authorization of users and sensors,
(b) Data-format conversion using message mediation,
(c) Interface mediation for integration of devices, and
(d) Mash-up mechanisms for Web services.
The project studies an application of the messaging network architecture to the
design of sensor networks. The key observation is that the network-centric approach
the messaging network can provide is very suitable for the integration of sensor data
in that the above issues are in many cases easy to resolve.
- Principal Investigator: Toshiaki Miyazaki
Title: Die-hard Sensor Network for Monitoring Disaster-hit Region
In the case of disaster, quick and detail surveillance of the damaged area is very
important to make a rescue plan to save human life. However, the detail surveillance
is usually done by hands in actual rescue scenes because there are no effective
aids. Our goal is to develop a wireless sensor network (WSN) system, so called
’die-hard sensor network’, which can monitor the disaster-hit region automatically
by only scattering many sensor nodes in the region. The WSN has the following
advantages; (a) no individual setup action is required in the field, (b) whole WSN
system is never down and continuously monitors the disaster-hit region even if
some sensor nodes involved in the WSN die, and (3) it has so scalable that we can
expand the monitoring area and improve the sensing quality by only deploying extra
sensor nodes as many as needed. In addition to these features, this system has
a good cost performance compared to other surveillance systems such as a remotecontrolled
helicopter. Thus, it can be applied to many critical disaster-hit regions,
and we believe that our system must contribute not only to the rescue processes,
but also to protecting the rescuers from secondary disasters.
- Principal Investigator: John Brine
Title: International Business Writing using a Learning Management System and
Flexible Language Acquisition Tools
This project employed EFL-based business writing pedagogy using a server-based
learning platform and computer-supported collaborative writing techniques in order
to equip students with business writing skills. In an effort to develop such a
learning platform, we used Moodle, the widely popular learning management system,
and Flexible Language Acquisition Tools (FLAX) to create a systematically
structured and student-customized web-based business writing course for free public
access. As part of this course design, our research provided formative feedback
in the design and use of this software. We also explored the software needs for
computer-supported collaborative writing. Further, we carried out a preliminary
survey-based usability study to explore how this software can be used for genrebased
language acquisition and content development with open source materials.
The research provided a basis to prepare workshops designed for participants who
expect to write English professionally. Successful employees know how to communicate
clearly and effectively, changing writing style and content for varying
audiences and purposes. The resulting workshops focused on the difficult task
of meeting readers’ needs while simultaneously representing the employee ’s and
employer’s best interests. To meet that end, the workshop assignments covered
a variety of tasks required at work (e.g., e-mail messages, presentations, reports,
proposals, minutes of meetings, etc.). Students who took the workshop improved
their writing, especially in terms of clarity and precision. An important benefit of
our approach has been the control of systematic group work while students made
use of text analysis software tools.
Mid-Term Plan Research
- Principal Investigator: Ryuichi Oka
Title: Mult-Media Search System
We have developed a new algorithm called two-dimensional Continuous Dynamic
Programming (2DCDP) for multi-media search. The algorithm can perform optimally
full pixel matching between images which enables to calculate robust similarity
measure between images which is used for media search.
The algorithm is applicable to many research themes. One of promising ones is
free-viewpoint TV. Using 2DCDP three video cameras are enough for realizing a
frame-wise 3D image which is viewed from arbitrary viewpoint of a user. This is
called free-viewpoint TV which is regarded as the next generation TV.
- Principal Investigator: Michael Cohen
Title: Cryptosteganographic affordances for multimodal interfaces
“Cluspi” is a watermarking system capable of yielding rectangular coordinates
and orientation when a camera captures a section of appropriately printed material.
We have deployed textsccluspi-encoded materials, starting with panoramic
photographs, as an affordance to our locally-developed multimodal display suite.
Because of the cyclic graphical nature (2 textscd depthlessness) of a “pano,” it
can be displayed just as easily, if somewhat unnaturally, inside-out. In particular,
such panos can be printed on cluspi-watermarked background and mounted on a
cylindrical accessory, a conveniently sized light-weight manipulable, about the size
of a can or bottle. Since the cluspi codes are subtle, they do not interfere with
watermarked panos. We experiment with textsccluspi encoding as a tangible interface
for virtual tour applications, especially when deployed in conjunction with
a multimodal interface suite featuring panoramic browsing, spatial sound, optional
stereographic display, and rotary motion platform.
Keywords: Cryptosteganography, multimodal interface, panoramic interface
- Principal Investigator: Stanislav Sedukhin
Title: 3D Toroidal Array Processor and Orbital Algorithems
We have designed and evaluated the performance of the 2- and 3-dimensional torus
array processors and corresponding orbital algorithms for multidimensional transforms,
including forward and inverse Fourier, Cosine/Sine, Hartley, Hadamard, and
other separable transforms.
3-D Array Processor was implemented in FPGA for the 3-D video codec which is
based on the forward and inverse 3-D Discrete Cosine Transforms.
- Principal Investigator: Vitaly Klyuev
Title: Query-Specific Summarization of Web Pages
The role of the Internet as a source of any kind information has been changed
dramatically over the past decade. There are a lot of tools to support users when
they serf the Web but finding appropriate information is still difficult. The key
reasons for such a situation can be characterized as follows. Texts are considered
as“ bags of words ”by search engines.
The primary goal of this project is to propose methods for construction of queryspecific
indicative summaries that are specialized for a single information need, the
user query. Their aim is to support end users in their decision making actions.
According to the functional approach, information needs can be described using
the natural language. The internal representation of documents preserves semantic
relations between words.
We designed methods responsible for finding fragments in the retrieved documents
which are semantically related to the user query (user information needs). These
fragments may be good candidates for indicative summaries. To design and implement
our methods, we combined statistical and functional approaches. We implemented
improved Web search service. The prototype of the search system was
developed to support this service. Results were presented at several international
conferences and published in the proceedings. Master students were involved in
- Principal Investigator: Daming Wei
Title: Biomedical Information Technology for Car Applications: A Brain-Computer
Interface for Car Applications: a Basic Study for the Future
This year ’s research was focused on a basic study on a brain-computer interface
(BCI) for car applications. In addition on EEG, we took Electroencephalogram
(EEG) into consideration, and develop a sensing technique for this that is able
to detect both EEG and ECG in one measurement by applying signal processing
technology. We also conducted a simulation to realize“ driving by imagination ”,
a dream at present time, and, feasibility in the in the future, by developing an
ECG-base Brain-computer Interface.
(1) M. Sakai and D.Wei, Separation of Electrocardiographic and Encephalographic
Components based on Signal Averaging and Wavelet Shrinkage Techniques, Computers
in Biology and Medicine, Vol. 39 (7) pp. 620-639, 2009.
(2) Motoki Sakai and Daming Wei. Wavelet shrinkage applications of EEG-ECGbased
human-computer interface. IEEE 8th International Conference on Computer
and Information Technology (CIT 2008), 08-11 July 2008, Sydney, Australia, pp.
(3) Sakai, Information Processing for Human-Computer Interfaces Based on Electroencephalogram
and Electrocardiogram, Ph.D. dissertation (Supervised by Daming
(4) Shigeno, Driving Simulation by EEG-based BCI, GT thesis (Supervised by
Daming Wei), 2009
- Principal Investigator: Haruo Terasaka
Title: Research on Micro-scale Regional Model (AIZU model)
A micro-scale regional model is indispensable component for the very high-resolution
weather forecasting system for Aizu area. To develop this micro-scale regional
model, we have downscaling of Meso-scale models such as RAMS, CReSS, MSSG,
etc. We also have been attempting upscaling of CFD (Computational Fluid Dynamics)
Models because of their sophisticated styling of numerical treatments.
- Principal Investigator: Kenichi Kuroda
Title: A Desktop Super Computer System with Reconfigurable Devices
We focused on the SPH method for simulations of liquid dynamics and developed
a acceleration system parallel processing on hardware and adopted FPGAs as a
hardware accelerator (PROGRAPE system). We studied three contents for acceleration.
First, we clarified the bottleneck in the simulation. From the profiling
result, the momentum equation was the bottleneck in our simulation. Thus we decided
to implement floating-point arithmetic units of the momentum equation on
FPGAs. Second, floating-point arithmetic units that were specialized in the momentum
equation were designed. Processor Generator for Reconfigu-rable systems
(PGR) was used to design arithmetic pipelines. Third, we optimized precision of
floating point arithmetic units. As a result, the sufficient precision of floating-point
arithmetic units was 16 bit of mantissa and 8 bit of exponent. The performance
evaluation showed the execution speed on the PROGRAPE system is 1.9 times
faster than the software implementation. The host processes on PC should be accelerated
for SPH Calculation in the FPGA Computing System. Using the Intel
Threading Building Blocks, we parallelized the calculations of the density and the
pressure force from wall boundary. The density calculation was 6.63 times faster
than the default state and the pressure force calculation speed improved to 6.47
times at most. When the time integration steps varies, the speed increase is from
1.25 times to 2.83 times faster than default method. When the number of particles
varies, the speed increase is from 1.64 times to 3.36 times faster than default
- Principal Investigator: Ben Abderazek
Title: An In-Body Wireless Sensor Network System for Elderly Monitoring
Traditionally, personal medical monitoring systems have been used only to collect
data. Data processing and analysis are performed off-line, making such devices
impractical for continual monitoring and early detection of medical disorders. Systems
with multiple sensors for physical rehabilitation often feature unwieldy wires
between the sensors and the monitoring system. These wires may limit the patient’s
activity and level of comfort and thus negatively influence the measured
results. In addition, individual sensors often operate as stand-alone systems and
usually do not offer flexibility and integration with third-party devices. Simply
stated, the existing systems are rarely made affordable.
Our project focuses of the research about efficient novel in-body wireless network
system to enable medical staff monitor elderly mobility and health recovery remotely.
The in-body network sensors monitors how a patient moves or picks up
vital health signs and sends this information wirelessly to make an alert via a home
hub or portable monitor.
Our ultimate goal of this project is to research and prototype an in-body embedded
system to assist old people and people with a disability maintain independence,
and promote well-being by introducing smart in-body systems that allow medical
professionals to initiate interventions in the home environment. We have already
developed ECG processing algorithm for low power systems and also developed its
1.Y. Haga, A. Ben Abdallah and K. Kuroda. Embedded MCSoC Architecture and
Period-Peak Detection (PPD) Algorithm for ECG/EKG Processing, The 19th Intelligent
System Symposium (FAN 2009), pp.298-303, Sep. 2009.
2.Abderazek Ben Abdallah, Arquimedes Canedo, Tsutomo Yoshinga and Masahiro
Sowa.The QC-2 Parallel Queue Processor Architecture, Journal of Parallel and Distributed
Computing, Vol. 68, No. 2, pp. 235-245, 2008.
3.Abderazek Ben Abdallah, Sotaro Kawata and Masahiro Sowa. Design and Architecture
for an Embedded 32-bit QueueCore,?Journal of Embedded Computing,
Special Issue in embedded single-chip multicore architectures, Vol. 2, No. 2 / 2006,
- Principal Investigator: Subhash Bhalla
Title: Interfacing Mobile Devices with Spatial Web Service for Maps and General
Often, a user uses a form based interface, in order to query a database. Increasingly,
a vast amount of data is becoming available, to the user through web services and
other means. There are many situations, where the form based approach to query
is not suitable. Semi-skilled users in a technical profession have general purpose
query requirements. While map data, that is available from Spatial web services
is commonly used in many applications. Many new forms of data are emerging
such as the Electronic Healthcare Records (EHRs). It is important to develope
query capabilities to the level of database query languages, that are easy to use
for semi-skilled persons. This effort will enable greater participation of skilled and
semi-skilled professionals for general purpose query.