修士論文要旨

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修士論文要旨
電子工学専攻 Graduate Course ofElectronics
福成敏：最適パターン光投影計測に基づく三次元画像計測結果の結合
Satoshi Fukunari: Uniting of 3-D Image Measurement Results Based on Optimal IntensityModulated Projection Pattern Technique
3-D image measurement can measure shape information of an object by using the digital images.
However, only the portion projected on the image is measurable in one image capture. Therefore, it is necessary to unite 3-D information measured from two or more images to realize a wide range 3-D measurement of object shape. In this research, the measurement results of obtaining from two images are combined
by using 3-D coordinates transformation technique of 3-D measurement results.
The method of Singular Value Decomposition (SVD) is used in this research to request the 3-D coordinates space transformation matrix. Moreover, to secure the reliability of the transformation matrix calculated from SVD, many need the measurement point that exists in the measurement result in different coordinate space. Therefore, selection of the method of measuring the larger area by one image is important. In
this research, the Optimal Intensity-Modulated Projection (OIMP) pattern projection technique that can
measure an area wide to be measured it high-speed and robustly in this research.
In the SVD method, it is necessary to solve the third equation to request a peculiar value. Therefore,
the detection of a peculiar value is tried by using Newton method in this research. Newton method is a
technique of the equation system method algorithm by the iteration method, and linear etc. have an effective
feature of not being especially demanded about the equation. However, cancellation of significant digits
occurs when the computer calculates and the detection accuracy decreases. Or, when detecting it in the
large range, large time is necessary. And, it proposed the algorithm that prevented cancellation of significant digits and the algorithm to which the range of the retrieval was able to be reduced.
This thesis is composed by four Chapters. Chapter1describes the basic principle of 3-D image measurement, the measurement principle using pattern projection technique, and the measurement principle using OIMP technique, etc. Chapter 2 describes the expression and the computational method of the movement of the model in a 3-D space, to analyze the movement of the unknown between the measurement results. And, the results of experimenting on the characteristic of the rotation procession who calculated by
using the singular value decomposition as a preliminary experiment are shown. Chapter 3 describes the
3-D reappearance of the uniting results by using presented uniting method and OpenGL. Chapter 4 summarizes this research, and describes future tasks.
Keywords: 3-D measurement, Image, Projection pattern, SVD, Uniting, Newton method
吉松弘師：三次元画像計測アプリケーションおよびカメラコントロールモジュールの開発
Hiroshi Yoshimatsu: Development of 3-D Image Measurement Application and Camera Control Module
Recent years, in the measurement field and shape measurement field, application of 3-D image measurements is demanded. To satisfy the above-mentioned demand, stereo vision with the digital camera,
witch has features of noncontact, high safety, and simplicity, is effective. The stereo vision uses the principle of the triangulation, it is necessary to detect the same noteworthy point from two or more images. In
this thesis, a color-histogram matching technique is proposed to get the measurement point from two stereo
images. Moreover, in order to improve measurement accuracy, the measurement point correction method
which uses edge information of the circumference of the measuring point is proposed. By use of the proposal technique the user’s operation error can be decreased.
One side, industrial field, the speed and the accuracy of the measurement are often valued more than
the reductions on the cost side. The 3-D measurement application that uses an industrial digital camera is
effective. However, the handling method of an industrial camera is generally complex, have to use the soft-
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ware of the attachment for the camera control; there is a difficult problem with on-line measurement that
cooperates with the measurement module originally developed. In this research, because the camera can be
easily handled even in an industrial field, communication method and picture method and resolution, the
camera control module to which two or more cameras can be controlled by one application is developed.
This thesis is composed by four chapters. Chapter 1 describes the basic principle and the application
of the 3-D image measurement. Chapter 2 describes the concrete content, the feature, and the development
method of the 3-D image measurement application. Afterwards, the semiautomatic associating technique of
the measurement points that uses the measurement point image coordinates correction technique and the
color-histogram is described, and the experiment results are shown. Chapter 3 describes the camera control
function necessary for 3-D image measurement, and shows the adjustment results of the camera and a consideration. Chapter 4 summarizes this research, and verifies the practicality of proposed 3-D image measurement application and camera control module by the experiment.
Keywords: Image, 3-D measurement, Stereo vision, Camera control, Module
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機能材料工学専攻 Graduate Course ofFunctional Materials Engineering
石澤夏希：MALDI-TOF MS を用いたアルキルフェノールポリエトキシレート分解微生物の分離
と同定
Natsuki Ishizawa: Separetion and Identification of Alkylphenol Polyethoxylate degrading Bacteria by Matrix-Assisted Laser Desorption Ionization Mass Spectrometry
Such the alkylphenol polyethoxylates (APEOs) as nonylphenol polyethoxylates (NPEO) and octylphenol polyethoxylates (OPEO) are excellent detergent and are used worldwide in large amount. The APEOs
released into the environment are known to be degraded to their short chain homologs and their corresponding carboxylic acids by the environmental microbes. The short chain homologs and the original alkylphenols are estrogenic and cause endocrine disrupting effects to aquatic organisims. We have been investigated
for the degrading microbes in the environment. This study focused on the microbes that distribute in creek
that spread over Saga plain. The enrichment culture using APEO as a sole carbon source was done for
creek water. The plate culture afforded many colonies of the microbes that have APEO degrading ability.
Although the colonies were conventionally screened by comparing their appearance, size and others, it is
known that the different microbe can form colonies quite similar to each other. We measured the MatrixAssisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI-MS) spectra of all colonies and made grouping by comparing the MALDI-MS spectra. It becomes apparent that the MALDI-MS
is very powerful not only to identify the microbes but also to screen the characteristic microbe in the environment.
Keywords: alkylphenol polyethoxylate, biodegradation, separation and identification, environmental fate,
MALDI-MS, endocrine disrupter
久家裕貴：Ag コロイド溶液を使用するアジン化合物の SERS
Yuuki Kuge: Surface-enhanced Raman scattering of some azine compounds with Ag colloidal
solution
The surface-enhanced Raman scattering (SERS) spectra of azine compounds, uracil, phthalazone, 2,3dihydroxyquinoxaline and phthalic hydrazide in Ag colloidal solution were observed. Energies of models
for the molecules adsorbed on Ag colloidal particles were calculated, and the stabilization energies showed
that these molecules adsorbed on the Ag colloidal surfaces.
The diluted solutions of these molecules were added to the Ag colloidal solution, and it was examined
to what extent of dilution the Raman bands were observed. On the basis of the experiments, it was clarified
that these azine compounds were detected in such dilute solutions as the concentrations of about 2×10−6
mol/l by observing the Raman bands of SERS spectra using Ag colloidal solution.
Keywords: azine compounds, silver colloidal solution, SERS spectra
副島英子：密度汎関数法による基準振動の計算値に関する新しい補正方法
Eiko Soejima: The new correction method for the normal vibrational frequencies calculated by
the density functional theory
After the vibrational spectra of molecules are measured, the assignments of normal vibrational modes
for the spectral bands are performed by the aids of some calculations. Although the correspondences in observed values and calculated values of normal vibrational frequencies using the Gaussian program are becoming better, differences still exist between the observed and the calculated values.
In this research, the scale factors for the calculated values of frequencies and the correction method by
the use of quadratic correction equations were newly presented.
These results were obtained by calculating the 3803 normal vibrations of 256 molecules by the density
functional theory (the B3LYP method) with the basis sets 6-311++G(d,p), 6-311G(d,p), 6-31++G(d,p), 631G(d,p), and 6-31G(d).
Keywords: Density Functional Theory, Normal Vibration, Scale Factor, Frequency Correction, Gaussian
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谷昭幸：焼酎蒸留廃液の資源化に関する研究
Akiyuki Tani: Research on the effective use for the Shochu distillation waste fluid
A variety of Shochu containing Awamori are the traditional spirits in Japan. It is said that the spirits
are better for health than other non-spirits. The consumption of the Shochu increased by a factor of 1.5 in
ten years from 1995. It means the same rate of increase of the distillation waste fluid that results along with
the Shochu production. The waste fluid has been used as the fertilizer, the raw material of methane fermentation and compost, the feedstuff and so on, and the rest of the waste fluid has been dumped in the sea.
The London Convention 1972 is an international treaty that limits the discharge of wastes that are generated on land and disposed of at sea. The protocol to the London Dumping Convention in 1996 which obligates Japan, and other signatories, to conduct environmental impact assessments of marine dumping of
waste materials. When the protocol will come into effect in near future, the dumping of the distillation
waste fluid in the sea will be prohibited at the same time. It is, therefore, needed to dispose the waste fluid
on land.
The waste fluid accompanying with the Mugi-shochu production (a kind of Shochu made from barley)
is known as a viscous liquid and it has high BOD value (60,000∼80,000 ppm) and SS value (20,000 ppm)
and low pH value (3∼4). As the difficulty of solid-liquid separation of the waste fluid is the bottleneck of
advanced use for the fluid, it is necessary to establish a new and facile separation method.
Then we started to establish the facile solid-liquid separation method using most dirty Mugi-shochu
waste fluid obtained from HIKARI-SHUZO CO. Ltd. The waste fluid was centrifuged at 2,000 g for 5 min.
The supernatant was not clear and the transmittance of the supernatant was below 1% at 600 nm. Then the
obtained supernatant was treated with several kinds of additives. A white carbon additive #80 produced
from silicone dioxide was most effective in subsequent centrifugal separation. On the hand, an additive B419 produced from perlite, an amorphous volcanic glass was the most effective additive for filtration. Filtration seems to be excellent for scale up treatment. The amount of clear supernatant obtained by filtration
treatment was 70% of the starting weight and the dry weight of the precipitates at the first centrifugal step
was about 6%. The residual liquid was contained in the precipitates. The clear supernatant contains about
1,000 ppm of citric acid and the acid may be the reason of its low pH value. The precipitates were carbonized at 800°
C in an electric furnace to give charcoal. The charcoal showed absorption activity to iodine by
80 mg/g and to methylene blue by 3 mg/g
箱田晋輔：MgB2超伝導バルクの臨界温度・臨界電流特性の評価
Shinsuke Hakoda: Estimation of critical temperature and critical current characteristics in superconducting MgB2 bulk
In this study, superconducting MgB2 bulks were prepared by the PIT (powder in tube) method. The
stainless tube (SUS316), which is considered playing an important role in the process of composing a pure
MgB2, was used in the sample preparation. The MgB2 bulk samples with high density and high quality
were obtained by employing an new approach, in which the stainless tube was pressed with high pressure
and precursors were arranged based on the concept of the diffusion.
In order to precisely and efficiently estimate the critical temperature (TC) and the critical current density (JC) in the samples, the dedicated programs of ac susceptibility measurement and ac inductive method
(Campbell method) were developed by using LabVIEW programming environment running on a Windows
PC. The result of TC measurement shows that all the samples have a TC value of about 40K, accompanied
with a narrow transition less than 2K. On the other hand, the JC value in the sample processed under the optimized conditions turned out to be as large as 4 x 109 (A/m2) at 30K and 0.2T, which approximates to the
champion data reported recently by some other groups.
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柳里恵：土壌細菌によるハロゲン化芳香族化合物の分解
Satoe Yanagi: Degradation ofhalogenated aromatic compound by isolated bacteria
The halogenated aromatic compounds have been used for agricultural chemicals and bactericide, and
these have the high toxicity. There is fear of influence to an ecosystem as the environmental pollutants because these are stable and have residual tendency at ground. Therefore 2,4-dichlorophenoxyacetic acid
(2,4-D) which is artificial phytohormone and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) were used as a
model for study of degrading aromatic compounds. 19 kinds of isolated bacteria could be separated using
medium with 2,4-D as a carbon source 71 soil samples. Almost isolated bacteria could degrade 60-80% of
2,4-D in 10 days, while no 2,4,5-T degrading bacteria could be isolated from the same samples.
Keywords: Halogenated aromatic compound, isolated bacteria
山下恵介：表面増強振動分光法を利用する高感度検出の検討
Keisuke Yamashita: Examination of sensitive detection using surface-enhanced vibrational
spectroscopy
The purpose of this study is to perform the more sensitive SERS detection using Ag particles than the
SERS in Ag colloidal solution. Because ν-picoline molecules are well known to adsorb on the surfaces of
Ag particles and to give the clear SERS spectra, ν-picoline was picked up among the pyridine derivatives
and used as the testing molecule for SERS detection on the surfaces of Ag particles.
Various kinds of Ag surfaces were tested whether the SERS phenomena were shown or not. And the
Raman spectra was slightly enhanced on the surface of Ag particles prepared by silver mirror reaction.
Keywords: sensitive detection, surface enhanced Raman scattering, ν-picoline, Ag particles,
silver mirror reaction
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知能機械工学専攻 Graduate Course ofIntelligent Mechanical Engineering
綾香和巳：非線形超音波を利用した微小クラック検出法の研究
Kazumi Ayaka: Development of evaluation method of a minute crack by using a nonlinear ultrasonic wave
When an ultrasonic wave is injected into a crevice, if the opening width of the crevice is almost on the
same order as the displacement of the ultrasonic wave, the crevice between the cracks may close or open.
As a result, the waveform of the ultrasonic wave becomes different from that of the injected ultrasonic wave.
Therefore, the incident ultrasonic wave has harmonic frequency components for the same as ultrasonic
wave that has penetrated into the material. However, the nonlinearity of a solid material is very small compared with that of a liquid medium, and a liquid medium with a high nonlinear efficiency has to must be
used as a coupling medium, when we use a commercial type ultrasonic transducer. We then tried to use an
electromagnetic acoustic transducer stet does not require a coupling medium.
KeyWords: Harmonic frequency, Nonlinear ultrasonic wave
大川内良彦：自然対流を利用した液体の粘度測定に関する研究
Yoshihiko Okawauchi: STUDY ON VISCOSITY MEASUREMENT OF LIQUID BY NATURAL
CONVECTION
For the purpose of developing a practical measurement method of thermal conductivity and viscosity
of liquids, the authors have proposed a simple method using natural convection around a uniformly heated
vertical plate. Based on the method, those physical properties can be evaluated by shear force measurement
by a digital electric balance and mean temperature difference measured by thermocouples. To verify the validity of the former method, a series of experiments have been performed so far for six kinds of silicone oil.
Viscosity of liquids measured with newly prepared insulated heating plate unit. And fairly good results
have been obtained for the kinematic viscosity ν of 10, 100 and 1000 mm2/s. However, concerning the
lower kinematic viscosity ν of 1, 2 and 5 mm2/s, measured values were about two times higher than those
put on a catalogue.
To investigate the cause, two kinds of measuring vessels of Type-1 and Type-2 were prepared in the
present study, which were designed to reduce the thermal plum effect. As a result, the effect of the thermal
plume has been reduced almost by half. However, a few corrections are necessary to make at low viscosity.
Therefore, measuring vessels of Type-3 was produced for correction. The approximation curve is made by
using the measurement data obtained by Type-3.
On the other hand, measurements of viscosity of liquids by using mean temperature difference have
been performed to verify the validity of the latter method. From comparison of the measured results on the
same to liquid, a fairly good agreement has been obtained. Furthermore, the measuring system is more
simply composed.
KeyWords: Natural Convection, uniformly heated vertical plate, mean temperature difference, shear force,
viscosity
岡崎隆一：焼結ダイヤモンド製マイクロボールエンドミルの開発と超精密微細加工への応用
Ryuichi Okazaki: PCD Micro Ball Endmill used for Mechanical Microfabrication
A microcutting tool mede of single crystal diamond is commonly used for the continuous cutting of
nonferrous metals such as aluminum and copper alloys. However, the chipping in cutting edge caused by
crystal cleavability is conspicuous, so that the tool can’t be adapted to the interrupted cutting of nonferrous
materials.
Tool manufacturing technique that can fabricate the sharp cutting edge of a micro-ball endmill 50 µm
in tool tip radius was developed using cemented carbide, cBN, and PCD as a tool material to overcome the
problem of single crystal diamond. In addition, machining tests of interrupted cutting using micro-ball endmill were conduced to the nonferrous and hard materials.
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It became obvious that a sharp cutting edge without chips could be fabricated when the ultra-fine
resin-bonded diamond wheel SD32000P120B was used as a finishing tool to the tool materials with hardness less than 30 GPa HV. However, the toughness of the tool materials was not so high that the tool wear
with micro chips generated in the process of interrupted cutting of the Brass 0.98 GPa HV.
On the other hand, it was difficult to sharpen fine diamond grains of poly crystalline diamond 90 to
100 GPa HV, so that the sharp cutting edge could not be obtained when the PCD was used as a tool material.
However, cutting test revealed that microcutting tools made of PCD were useful for the high-speed interrupted microcutting of nonferrous, brittle and hard materials.
KeyWords: Microcutting, PCD Tool, Hi-speed Microcutting
澁谷裕作：滴下潤滑下のおけるアルミニウム合金含浸グラファイト複合材料の摩擦・摩耗特性に
及ぼす雰囲気湿度の影響
Yusaku Shibuya: Effects ofEnvironmental Humidity on Friction and Wear Characteristics ofAlSi Alloy Impregnated Graphite Composite under Drip-Feed Lubricating Conditions
Many tribologists have investigated the friction and wear of Al-Si alloy-based composites aiming at
the reduction in weight of sliding materials. Our laboratory focuses on the friction and wear characteristics
of Al-Si alloy impregnated graphite composite (ALGR-MMC) that is expected to be used for such a sliding
material. From the previous results, it has been known that under unlubricated conditions the wear rate of
ALGR-MMC takes a minimum at the middle range of relative humidity (RH=50-60%) in air. In the present
research, the friction and wear characteristics of ALGR-MMC are investigated in connection with environmental humidity dependency under drip-feed lubrication of base oil for engines. ALGR-MMC and its base
materials (Al-Si alloy, graphite) were used for pin specimens and a bearing steel for disk specimens. The
friction and wear characteristics of the pin in sliding contact with the disk under the drip-feed lubrication
before each test were examined with a change in RH and amount of oil.
From the test results, the wear rate of ALGR-MMC under the drip-feed lubrication is much less than
that of under unlubricated conditions. In addition, the wear under the drip-feed lubrication is little influenced by humidity compared with the wear under the unlubricated conditions. It is known that high relative
humidity prevents the Al-Si alloy from running out of oil. The graphite is superior to friction and wear at
high humidity rather than at low humidity.
Keywords: Friction and wear, Al-Si alloy impregnated graphite composite, Amount of oil,
Environmental humidity, Drip-feed lubrication
新家祥之：極微粒ダイヤモンド電鋳工具に対する砥粒平坦化ツルーイング技術の開発
Yoshiyuki Shinya: Truing Techniques Fabricating Diamond Grains of Electroformed Diamond
Tools into Flat
Unlike microcutting, microgrinding has a potentiality to fabricate ultraprecision microstructures to
hard and brittle materials such as glass and ceramics. However, both the microgrinding tool with superior
wear resistance and mirror-grinding techniques have not been developed so that the microgrinding at which
a tool of small dimeter is rotated in high speed is not employed.
A pressure copy truing that can fabricate sharp cutting edges of diamond grains on a wheel working
surface into flat was conducted to electroformed diamond tools with fine grains #3000 in mesh size. It was
verified through the truing test that displacement copy truing using grinding tool with fine diamond grains
and superior wear resistance should be employed as a truer for the truing.
Hence, the displacement copy truing using polycrystalline diamond PCD of 0.5 µm in sintered diamond grain size was conducted. A truing test to find out the best truing conditions that can fabricate tool
working surface into smooth was conducted by varying surface roughness of the truer, revolution speed of
the tool and truer, speed of orbital motion of the truer and the wheel depth of cut.
It was verified through the test that the truer surface generated by the electrical discharge machining
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EDM should be flattened by grinding the truer’s surface in order to diminish scratches remained on the tool
surface. In addition, truing conditions that can fabricate wheel working surface into smooth could be found
out.
Keywords: Microgrinding, Diamond Wheel, Truing, Electroformed Diamond Tool,
Electrical Discharge Machining
早田智史：小型羽ばたき飛翔体の研究・開発
Satoshi Souda: Development ofFlapping Micro Air Vehicle
We have developed an insect-size flapping Micro Air Vehicle (MAV) with hovering ability, having a
wing length of 5 cm and a total weight of 2.35 g. It can be remote controlled by infrared transmitter. Intersecting 4 wings, which consist of 2 pairs of wings, showing X-like front view, were driven by a pager motor
of 4 mm in diameter. The static thrusts obtained by 4 wings was 30% larger than the doubled value of those
obtained by 2 wings for the same flapping frequencies. It can be considered to be due to the “Clapping” effects of the butterfly. The electric energy to obtain the thrust of 2.35 g was 0.38 W, which is about three
times larger than the theoretical value calculated by momentum jet theory. We have developed a new infrared receiver using microcomputer in order to measure the electric power consumption of the motor in the
level flight.
KeyWords: Flapping, MAV, Hovering, Ornithopter, Insect
山本和幸：サッカーボールに加わる非定常空気力の検討と測定装置開発
Kazuyuki Yamamoto: Experimental study of unsteady aerodynamic force on soccer ball and
sensor development
There are two kinds of shot balls in soccer game. One is well known curved ball, which is explained
by air force of Magnus effects with ball rotation. The other is so called middle shot, which was to be famous is 2006 FIFA world cup. This ball flights in less spinning, but aerodynamic mechanism of this erratic
ball is not clarified in this stage. In this study, we conducted this problem by free fall examination, image
processing using TV sine and wind tunnel experiments. The Strouhal number in flight of soccer ball was
near around 0.012, which value is smaller than smooth sphere 0.2 in sub-critical Reynolds number. The
magnitude of unsteady air force measured by the wind tunnel experiments explained qualitatively as same
as the real movements in flight. Flow around soccer ball is near around super-critical Reynolds number
flow of smooth sphere by the seam existence of the ball surface. In this flow region, a horseshoe-shaped
vortex on the rear surface of the sphere and a pair of stream wise line vortices ranging to far wake. This
flow was explained by Taneda (1978), and successfully adopted of this soccer ball erratic behavior by this
research.
Keywords: Soccer ball, Middle shot, Strouhal number, Reynold number, Unsteady air force
三角和広：電磁超音波センサを用いた引張試験中のオンサイト応力評価システムの開発
Kazuhiro Misumi: Development of a stress measurement system during tensile testing using
the electromagnetic acoustic transducer
When a strain gauge is used to measure stress in a tensile specimen, we must affix the strain gauge to
the specimen. We cannot then measure the stress at an arbitrary point on the tensile specimen. Thus, we
have developed system that measures stress during tensile testing using an electromagnetic acoustic transducer (EMAT). First, we developed an EMAT that could drive S0-mode and A0-mode Lamb waves using
the magnetostriction effect. Next, we designed and fabricated a two-dimensional scanner, its control system
and a tensile specimen for stress measurement. It was confirmed that we could evaluate the stress with high
precision when the traveling direction and displacement direction of the ultrasonic wave were the same. Finally, we demonstrated that we dimensional stress distributions using the new system.
Keywords: Stress, Tensile test, EMAT, Acoustoelasticity
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電気工学専攻 Graduate Course ofElectrical Engineering
小林祐喜：Si 中の過飽和 Au 不純物の回復過程で発生する微小 Au 集合体に関する研究
Yuuki Kobayashi: Small Au agglomerates generated in the annealing process of supersaturated Au impurity in Si.
Au atom in Si diffuses as interstitial Au and becomes substitutional Au. The Au atom kicks Si atom to
interstitial site or enters into vacancy, and Au atom interchanges its site from interstitial to substitutional
sites. An interstitial Si is generated and a vacancy disappears by this positional exchange. The substitutional Au exits in three states depending on the history of heat treatment: low-temperature substitutional Au,
high-temperature substitutional Au, and agglomerations of substiturional Au.
Au-pre-indiffused Si sample is reheated by ordinary annealing and continuous annealing methods. Supersaturated concentration of Au decreases to their thermal equilibrium value. The concentration profiles
during the annealing are measured by secondary ion mass spectroscopy (SIMS) and isothermal capacitance
transient spectroscopy (ICTS). Supersaturated Au diffuses to the surface and shows an out-diffusion profile,
and small Au agglomerates are generated and their number and the size depend on the cooling speed and
annealing time.
Keywords: Au in Si, high-temperature supersaturated Au, out-diffusion profiles in Au, annealing
近藤暢充：磁気特性測定システムの自動化と高精度化に関する研究
Masamitsu Kondo: Automation and Accuracy Improvement in Magnetic Measuring System
In recent years, the demand of iron loss reduction of the standpoint of energy saving to electrical machinery and apparatus is strong.
For this reason, development of low loss iron core material is performed brisky.
In order to advance such research, the magnetizing-properties data of the iron core material under various magnetization conditions is required.
When based on manual measurement, it is desirable to become complicated by the measurement under
various conditions, and to perform automatic measurement.
So, automation of the magnetic measurement system was tackled in this paper.
It aimed at everyone’s performing control of a magnetic flux wave by the program of PC simply using
the apparatus which can be constituted.
Moreover, since the integrator incorporated into a system was an important portion when it determined
the measurement accuracy of a system, the accuracy examination was also performed simultaneously.
Keywords: iron core, automation, magnetic measurement system, magnetic flux wave
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情報工学専攻 Graduate Course ofComputer Science and Engineering
秋山恒平：インクジェット技術を応用した大島紬染色加工の基礎的な考察
Kouhei Akiyama: A Basic Study of Dyeing Process on Oshima-Tsumugi by Applying Ink-Jet
Technology
This paper describes some remarkable characteristics about dyeing process by using electro-statically
extracted ink-jet system. A study to promote computerization of surikomi-senshoku into cloth dyeing ing
tsumugi industry has been studying lately. A study of dyeing method that uses ink-jet system has been tried.
However, the traditional ink-jet system has easily clogged at the nozzle with dye, and not practically available yet. In this study, an application of electro-statically extracted ink-jet system has been tried. This is
because of big nozzle at inner diameter can be allowed in this system. Since “Tsumugi” was hardly obtained at first stage, dye was utilized either on recording paper or on OHP films. It is needed to dye of
about 1 mm width on tsumugi. We have leared that the recording width of dye become less than 1 mm,
which is useful in such purposes. Then, dyeing has been tried by using real Tsumugi at the next stage. We
have leared that the effectiveness of the Tsumugi dyeing by using electro-statically extracted ink-jet system
was remarkable of its specific application.
Keywords: electro-statically extracted ink-jet method, dyeing processing, Oshima-tsumugi
粟井康全：マップベースキュービックパノラマシステムの開発
Yasumasa Awai: Development ofMap-Based Cubic Panorama Systems
A lot of VRML-based virtual environments are open to the public on the Web now. However, it takes
a long time to create them and they are far from real images. In addition, it is not easy for novice users to
navigate 3D virtual environments. Therefore, we have developed a map-based cubic panorama system
where the panorama-based virtual environments cooperate with a hierarchical map in vector form, and we
have opened it to the public on the Web. This paper proposes a text annotation method for the panoramabased virtual environments, and an annotation support system is constructed. In addition, it proposes a
method that estimates the camera position of a panorama from an existing cubic panorama and the related
map without using an expensive positional measuring instrument. Finally, the effectiveness of the method
is shown by experiments.
Keywords: panoramas, annotation, camera-position estimation, virtual environments, VRML
于春雷：３次元仮想環境における自動ウォークスルー
Chunlei Yu: Automatic Walk-Through in 3D Virtual Environments
The walk-through operation is demanded frequently in 3D virtual environments such as virtual art galleries and virtual museums. Since the operation is usually performed by dragging a 2D mouse or pushing
arrow keys, it is difficult and time consuming for novice users. Most of existing VRML viewers provide users with the function that sets cameras (viewpoints) to any objects and switches them. However, this function has a problem that a viewpoint moves to the next target object momentarily or unnaturally.
In order to solve these problems, this paper proposes a graph-based automatic navigation method for
3D virtual environments that enables users to walk through the shortest path without colliding with other
objects from a present place to a target object. Moreover, an experimental virtual art gallery is created to
show the effectiveness of our proposed method.
Keywords: automatic walk-through, virtual environments, graph, shortest path, VRML
岡部成将：再帰結合をもつ複写学習モデルによる低品質重ね文字列の認識に関する研究
Sigemasa Okabe: A Study on Recognition ofLow Quality Superimposed Character Strings Using a Copy-Learning Model with Recurrent Connections
For a practical pattern recognition system, the recognition of a special as well as basic character strings
is both necessary and important. In the latest word processors, it is also possible to print superimposed char-
―１４３―
acter strings that narrow the interlinear space to the intention. This paper proposes a copy-learning neural
network with recurrent connections allowing the recognition of superimposed character strings through
learning of the basic character strings alone. In the computer simulation result, the following are considered: Number of character string and effect of the length of the character on the recognition and generalization ability for unlearning character string. Based on the results of the recognition experiment for superimposed character strings, the effectiveness of the proposal model is shown.
Keywords: recurrent network, character recognition, superimposed character strings
岡松恵太：音刺激のテンポが及ぼす癒し感と心拍数の関係に関する研究
Keita Okamatsu: Study on Relation between Heart Rate and Healing Impression by Tempo of
Sound Stimulus
That stress is reduced in sedative music is reported by previous study that examined about the healing
impression by music. However, coherent opinion is not yet reported. It is because previous study evaluated
music in itself. Therefore this study experimented on two kinds that focused on tempo that was one of the
components of music. In the first experiment, the subject evaluated healing impression about tempo of simple sound. In the next experiment, the subject evaluated healing impression about the musical tempo, in addition we measured the heart rate of subject during experiment. As a result, sound stimulus to have tempo
equivalent to heart rate at the time of rest showed tendency healed most. Result of this study is useful for
composition of healing music.
Keywords: Healing Impression, Sound Stimulus, Tempo, Heart Rate, Healing Music
金万福：複写学習モデルによる文字列の復元に関する研究
Mannhuku Kin: A Study on Restoration ofCharacter Strings with a Copy-Learning Model
For a practical pattern recognition system, low quality character string pattern restoration is necessary
and important. Currently, the Elman network is proposed as one of the techniques for learning and recognition of character string patterns. However, the conventional network has a fault whereby the recognition
rate for missed character strings decreases. Moreover, the auto-associative neural network is not enough
studied about memory and restoration rate of a character string.
This research examines the influence of the length and the number of character strings on the copylearning process, and reports the restoration ability in terms of missed character strings.
Keywords: neural network, copy-learning, low quality character strings, restoration
桑水流直矢：インクが記録物体に着弾する瞬間の振動音検出に関する基礎的な検討
Naoya Kuwazuru: A Basic Study of Vibration Characteristics at the Ink-Jet Impact on Recording Objects
This paper describes characteristics of the vibration occurred by an ink impact on the recording objects.
There are no researches reported about vibration of an ink impact on the recording objects. This study is
one of the new fields connected to both ink and vibration technologies. When an industry application of
ink-jet technology is considered, it has to think about the proper flight control of ink. This vibration must
be paid attention when ink flight occurred some variations at the impact on the recording objects. As a result, we have learned that each variation has being different of the behavior at the ink impact among recording materials.
Keywords: Ink, Vibration, Recording Objects
―１４４―
末廣光司郎：視覚モデルと離散ウェーブレット変換を応用したフラクタル画像符号化に基づく電
子透かし法の性能評価に関する研究
Kohshiro Suehiro: Study on Digital Watermarking Based on Fractal Coding Using Human Visual System Model and Discrete Wavelet Transform
A new digital watermark technique based on fractal image coding is proposed. We use the low frequency area in the discrete wavelet transformation (DWT) as a way of the robust embedding watermark.
For improving the watermarked image, another technique, the human visual system model, is used. The
simulated results show the good watermarked image quality and the good robustness for JPEG compression
and JPEG2 compression.
Keywords: Digital Watermarking, Fractal Coding, Discrete Wavelet Transformation,
Human Visual System Model, Security
只松義喬：通信トラヒックの相関構造を利用した通信品質の劣化検出
Yoshitaka Tadamatsu: QoS Degradation Detection through Traffic Correlation Analysis
In this thesis, we report it about relations of deterioration of an image and correlative structure when
we perform streaming delivery. We capture traffic data flowing through a network and we make the data a
graph in a VT (Variance-Time) plot and examine correlative structure. We give a network various background load to let an image deteriorate. Deterioration of an image changed by a ratio of load and compared
a difference of correlative structure. In addition, we examined influence when we changed buffer time
without giving load. As a result, we understood that we could detect presence of deterioration of an image
and a difference of buffer time by a difference of correlative structure.
Keywords: streaming delivery, deterioration of an image, correlative, VT plot
直江弘次：学習履歴マイニングによる学習支援手法に関する研究
Koji Naoe: Studies on Learning Support Mechanisms with Learning History Mining
The e-learning systems have been widely used in university education, technical training or personal
learning. However, it is important to offer teaching materials and exercises which are suitable to each
learner respectively. In this paper, we discuss the mechanisms of providing learning support with learning
history mining. We report the detail about implementation of those functions in e-learning system Moodle
and show the results of their applications.
Keywords: Learning History Mining, e-learning, data mining, LMS
新名貴浩：組込み用ミニオペレーティングシステムの開発
Takahiro Niina: Development ofSmall Operating System for Embedded Computer Systems
Recently, CPUs structured by x86 architecture gradually come to used on embedded systems. Those
CPUs are not only available high performance power, but also enable to port programs and to use peripherals developed for IBM-PC so far, but CPUs had a weak point of high power consumption. As new x86CPUs suppressed power consumption are being developed, they will be more adopted on embedded systems. In order to develope embedded computer systems easily, we need a small operating system which
works as an interface between CPU and application programs. So we have developed small operating system for CPU of x86-architecture. The system have functions of memory management, graphical user interface, memory protection by using descriptor and interrupt management.
Keywords: Embedded systems, Operating System, x86 architecture
―１４５―
牧野好裕：離散ウェーブレット変換と自己組織化ニューラルネットワークを用いたロゴ透かし法
に関する研究
Yoshihiro Makino: Study on Logo Watermarking Using Discrete Wavelet Transform and SelfOrganization Neural Network
This thesis presents a new approach of logo watermark based on self-organization neural network and
discrete wavelet transform. The self-organization neural network is used to obtain the indexes of compressed logo image. The indexes are embedd to the original image as the watermark. The discrete wavelet
transform is applied for improving the robustness of various attacks like JPEG compression. Moreover, the
extracting ratio of watermark is improved by applying the huffman coding. Simulation results show the effectiveness concerning the watermarked image quality and the robustness of JPEG compression.
Keywords: Logo Watermarking, Self-Organization Neural Network, Discrete Wavelet Transform,
Huffman Coding
李洋：ランダムフラクタルによる地形の自動生成
Li Yang: Automatic Terrain Generation with Random Fractals
In the world of VRML/X3D that is an international standard of Web3D, the “ElevationGrid” node is
usually used to express terrains, but it requires a huge amount of altitude data for a large size of terrains. If
terrains are generated automatically using a random fractal, the data size can be greatly decreased. In this
paper, four shapes of base planes to that the middle point displacement method is applied are examined and
compared. Moreover, this paper examines and compares the features of automatically generated terrains
when the decrease equation of the maximum value of the uniform random number used in the middle point
displacement method and the initial and final value of the maximum value are changed respectively. Finally, new VRML node “FractalTerrain” is defined using “PROTO” of the VRML, so that everyone can easily make use of the terrain generation function that is implemented in our experimental system.
Keywords: middle point displacement, fractal, terrain, VRML, JavaScript
―１４６―
情報通信工学専攻 Graduate Course ofCommunication and Information Networking
池田
誠：ヒューリスティック手法を用いた次世代ネットワークのアーキテクチャとアルゴリズ
ムに関する研究
Makoto Ikeda: Architectures and Algorithms for Next Generation Networks Using Heuristic
Methods
Networks of today are going through a rapid evolution. In the last few years we have observed an explosive growth of multimedia computing, communication and applications over the Internet. Also, in wireless networks, the speed is increasing and in near future will be over100Mb/s. In order to deal with increasing speed of today networks, the algorithms, methods and mechanisms should have a fast decision, be flexible, adaptive and intelligent. The architectures and algorithms in high speed networks become very complex and it seems imperative to focus on new models and methods which can enable the network to perform
adaptive behavior in order to manage the increasing usage demands, provide support for a significant number of services, guarantee their QoS, and optimize the utilization of network resources. In our previous
work, we proposed an intelligent routing and CAC strategy using cooperative agents. However, we only
considered the time delay for the routing. In this work, we extend our previous work by proposing and implementing new algorithms based on Fuzzy Logic (FL) and Genetic Algorithm (GA) which use for CAC
and routing many QoS parameters. By using a cache method, the routing algorithm can converge very fast.
The simulation results show that proposed framework has a good performance and can be sealed up by increasing the number of domains.
Keywords: Traffic Control, Multimedia Communication, QoS Routing, Intelligent Algorithms, Agents
伊藝元：同一平面上で任意の角度をなす２つのくさびによる回折波の解析
Gen Igei: The Analysis ofFields Diffracted by Two Wedges with Arbitrary Angle in a Plane
The analysis of electromagnetic waves propagating in urban areas is not easy because they are complicatedly scattered by walls and edges of buildings. However, it is important to estimate propagation path in
urban areas from the viewpoint of an effective utilization of the radio wave resources. So far we have investigated the diffracted fields by the parallel edges of the building roof. These results, however, are not sufficient, since the edges of buildings are not always parallel.
In this paper, we analyze the diffracted fields by two edges which form two wedges on a building roof
with an arbitrary angle. The numerical calculations are carried out for the perfect conductor and concrete
wedges considering the effect of the reflection from a ground plane. Numerical results show that the orthogonal field components become strong when the angle of the two edges increases.
Keywords: GTD, slope diffraction, ground reflection
大庭将平：CIP 法による媒質境界を含む１次元電磁波伝搬解析
Shohei Ohba: Analysis ofPlane Wave Propagation through Medium Boundary by CIP Method
In recent numerical analysis of electromagnetic wave analysis, Method of Moment, Finite Element
Method and especially, Finite Difference Time Domain (FDTD) Method are used in general. The Constrained Interpolation Profile (CIP) Method is newly gathering interests, because the error diffusion by
space discretization is smaller than FDTD method. The CIP is a kind of differencial method like FDTD, but
solving advection equations which are derived after operations of describing equations of problem. The calculation is done for the value of function and the derivative at each discrete grid point by using cubic polynomial.
In this master thesis, electromagnetic plane wave propagation is analyzed by CIP method. Reflection
and transmission characteristics at dielectric medium boundary are calculated for several cases, and compared with results of FDTD method and exact solutions in detail. Throughout the calculated results, a criterion for time and space discretization in CIP method was found with respect to Courant criteria in FDTD.
Keywords: CIP Method, FDTD Method, Advection Equation, Numerical Diffusion
―１４７―
坂崎俊介：ユーザの嗜好を考慮した洋服画像検索システムの研究
Shunsuke Sakazaki: Cloth Image Retrieval System considering User's Preference
Recently, digital cameras and digital cellular phones with digital cameras have been widespread. Digital image data from these cameras and other video sources are processed and stored in the databases or
computers. There are too ways to retrieve the target image in the large amount of images; one ways image
characterization of the image itself and the other dose meta data of the images.
This paper presents a new Clothes Image Retrieval System which uses the former image characteristics
of the customers preference. By changing the threshold values of the RGB color range corresponding the
customers preference, the hit ratio of the target image can be improved and searched effectively. Experimental results of the prototype retrieval system show better retrieval characteristics and effectiveness of the
proposed retrieval image algorithm is confirmed.
Keywords: Image retrieval, Clothes, Color Information, Customer preference, Feature extraction
佐藤丈紀：無線セルラーネットワークのためのファジィハンドオーバアルゴリズムに関する研究
Takenori Sato: A Fuzzy-based Handover Algorithm for Wireless Cellular Networks
In recent years, the wireless mobile networks and devices are becoming increasingly popular to provide users the access anytime and anywhere. The mobile systems are based on cellular approach and the
area is covered by cells that overlap each other. In mobile cellular systems, when the frequency band is high,
because of the existing obstacles, the intensity of electric field decreases. This causes the dead spot phenomenon. To deal with this issue, when there are more than two Base Stations (BS) that communicate with
a mobile terminal, the selection of BS for communication by the handover algorithm is a very important
problem. The handover process refers to the mechanism by which an ongoing call is transferred from one
BS to another. In the previous work, during the handover process if the threshold is small, the ping-pong
problem happens.
In this thesis, we propose a new handover algorithm based on fuzzy theory. The handover decision is
done by BS based on the received signal strength of mobile terminal. In the simulations, for the measurement of the field strength we employ a simplified model for propagation in urban areas considering only the
direct and reflected waves. We set up the parameters for BS and mobile users and investigate the behavior
of the mobile users for different scenarios. The performance evaluation via simulations shows that the proposed system can avoid the ping-pong effect and can decrease the network load.
Keywords: mobile telecommunications, handover, fuzzy theory, random walk
高濱聡一郎：Ｓ字形曲がり廊下を中央に有する建造物内の電波伝搬解析
Soichiro Takahama: Analysis of Electromagnetic Wave Propagation inside a Structure Having
an S-type Shaped Passage
The aim of this paper is considering electromagnetic wave propagation inside a structure, which has an
S-type shaped passage with shield walls containing frameworks. The S-type shaped passage is one of the
complex structures that are applied in many buildings recently. To consider the propagation of electromagnetic waves when line sources are located inside such S-type shaped passages are very important for development of mobile technologies. In this work, the walls of the S-type shaped passages are defined the shield
walls which contain frameworks. The study has been progressed by comparing the numerical findings obtained by numerical analyses and experiment using scaled models. Note that, the experiments has been carried out supplying microwaves as a line source inside the scaled model whose passages are produced by
concrete which is a famous building material. Note also that, the FVTD method has been applied to numerical analyses.
Keywords: Analysis of Electromagnetic Wave Propagation, S-type Shaped Passage, Propagation Experiment, FVTD Method
―１４８―
中村暢大：３次元ビデオストリーミングシステムの提案と実装
Nobuhiro Nakamura: Proposal and Implementation of3D Video Streaming System
Network based communication tools become very popular in recent years. The users are increasing to
spread of the Internet. These tools provide communication facilities for the users distributed in the world.
However, these tools have not come to feel talking face-to-face with the other users at the same plase. In order to facilitate a 3D audiovisual communication with anyone, 3D video streaming system is proposed. In
this paper, we show the implementation of our system and the comparison with other communication tools.
Keywords: 3D Video, 3D Audio, Computer Vision
長田陽成：２次元電磁波伝搬への CIP 法の適用に関する研究
Yosei Nagata: Study on Application of CIP Method for Two Dimensional Electromagnetic
Wave Propagation
In this master thesis, CIP method was applied to solve propagation of electromagnetic wave in multidimensional space with medium boundary. As an example, TM wave propagation in two-dimensional space
was converted into advection equations and analyzed numerically by CIP method, considering treatment of
the values on boundary. From comparison of the simulation results with FDTD analysis, the electric field
profiles of CIP method have shown good agreement with the results of FDTD analysis.
Keywords: CIP Method, Electromagnetic Wave Analysis, Multi-dimensional Analyses
根本理絵：フォトニック結晶導波路のマイクロ波モデル実験
Rie Nemoto: Experimental Study ofPhotonic Crystal Waveguide in Microwave Frequency
Photonic crystal structure and its application will be promised key devices for future photonic network,
due to its unique propagation characteristics based on photonic band gap originated from the periodic structure.
In this master thesis, propagation and transmission characteristics of photonic crystal waveguide,
which was realized by line defect in the periodic structure, are experimentally studied. First, a model of
two-dimensional photonic crystal waveguide in 4 GHZ microwave frequency, which was made of aluminum plate and ceramic dielectric, was fabricated. The characteristics were measured for following structures; (1) single, straight waveguide with/without absorber, (2) cavities in waveguide, (3) directional coupler,
(4) bent waveguides.
In experiment (1), the dispersion curve was evaluated and the stop band was observed. In (2), the resonance frequencies for a few cavity lengths were observed and Q-value was evaluated. The resonance is well
interpreted from the wavelength in the waveguide. In (3) and (4), the transmission characteristics were compared with the results of FDTD simulation. The results have shown fairly good agreement in (3). However
in (4), the stop band was not agreed. Throughout this study, in most cases, the experiment by a model in microwave frequency is helpful to understand the performance of photonic crystal waveguide.
Keywords: Photonic crystal, Directional coupler, Resonator structure, Experiment with Microwave Frequency
馬場真一：大規模多地点ビデオ会議システムに関する研究
Shinichi Baba: Research on a large-scale multi-points video conference system
In this paper, the author proposes a large-scale multi-points video conference system introducing the
stream composition method and the speaker specification method. This type of system has two problems.
One is increase of packets according to the number of client. The other is a specification of speaker for distributed users. The author finds the number of packets can be reduced drastically to compose the live video
streams and a speaker specification can be supported to play sounds reflecting on its direction and distance.
This paper was described these experimentations and a construction of the proposed system.
Keywords: Video conferencing system, Streaming technology
―１４９―
東島基士：無線ネットワークのためのファジィ接続制御に関する研究
Motoshi Higashijima: A Fuzzy Admission Control System for Wireless Networks
The mobile cellular systems are expected to support multiple services with guaranteed Quality of Service (QoS). However, the ability of wireless systems to accommodate expected growth of traffic load and
broadband services is limited by available radio frequency spectrum. Call Admission Control (CAC) is one
of the resource management functions, which regulates network access to ensure QoS provisioning. However, the decision for CAC is very challenging issue due to user mobility, limited radio spectrum, and multimedia traffic characteristics. To deal with these problems, in this paper, we propose a fuzzy CAC system.
We compare the performance of the proposed system with Shadow Cluster Concept (SCC). We evaluate by
simulation the performance of the proposed system. The proposed system has a good behavior on deciding
the number of accepted connections while keeping the QoS for serving connections. Also, it has better performance than SCC.
Keywords: Fuzzy Theory, CAC, QoS, Heuristic Methods, Wireless Network
日渡裕也：ユーザ適応型コミュニティシステムに関する研究
Yuya Hiwatashi: Studies on User Adaptive Community System
This paper presents a new community system which can specify the customers interests or concern
from the network access history and support the mutual communication among the members. The customer
interests ratio is newly defined in the special fields and can be evaluated quantitatively.
This community system calculates an intensity of the user interests by introducing the Bayesian estimation algorithm and classifies the interests fields. Then the interests ratio is also determined by considering the user activities.
The prototype system is configured and the experimental results show the good performance of the
customer interests. Then the effectivity of the new proposed community system is confirmed by the user
questionnaire.
Keywords: Community system, Customers interests, Information sharing, Communication support, User
activity
水田勝人：レーザ誘起衝撃波シミュレーションによる光学的測定法の提案
Katsuhito Mizuta: A Proposal for Measurement of Laser Induced Shock Wave based on Simulation
In application of laser induced shock wave for micro surgery, control of the pressure from fiber output
surface generated by pulse laser energy is important. As the conventional experimental measurement, photographs have been repeatedly taken by shadowgraph method through changing the release time of shutter
of high speed camera. After the deposition, the shock wave pressure was estimated by many photographs
with different release time.
As is confirmed in the shadowgraph method, the shock wave generates the dielectric (or refractive index) profile around the wave front. In this study, measurement of the dielectric profile formed by laser induced shock wave through observation of scattered light of continuous reference laser beam is proposed. It
is assumed that the dielectric profile is Gaussian and the scattering of continuous reference beam is simulated by two-dimensional FDTD method. As a result, it is confirmed that by observing the change of peaks
of scattered reference laser with video image of high speed camera, the relative dielectric constant εr with
range from 3 to 20 could be distinguished. The proposed method will drastically reduce the time and cost of
estimation of pressure of laser induced shock wave.
Keywords: Laser, Shock wave, Dielectric profile, Pressure, Optical measurement
―１５０―
楊
涛：伝播モデルとトポロジーを考慮したセンサネットワークの省エネルギーに関する研究
Tao Yang: A Simulation System for Optimizing Energy of Sensor Networks Under Different Radio and Topology Models
The radio model usually used in most of studies on wireless sensor networks in spherical. This means
that the received power at a certain distance is the same for all directions. But this is not the ease encountered in real hardware. Recently, the importance of considering more accurate models has been shown to be
a key factor on establishing the performance of MAC and routing protocols in ad-hoc and sensor networks.
In this thesis, we show that the analysis of such a network by simulation is not trivial when one uses more
realistic radio models. We emphasize this problem by comparing the impact of realistic simulations on the
study of infrastructure trade-offs of sensors networks. As expected, simulations confirm that more advanced
simulation techniques are required in order to take into account wireless channel models and too bound the
simulation time as well. Furthermore, we study the interdependence of these metrics and the scaling factor
of the network size and shape, simulation results confirm the fact that the shadowing phenomena, by destroying the regularity of the network, reduce the mean distance among nodes and at the same time increase
the interference level and the latency of packet transmission.
Keywords: Sensor networks, Routing protocols, Simulation systems, Ns-2, Event-reliability
芳野雄一：周辺大地の媒質定数を考慮した正規化サイト減衰量
Yuichi Yoshino: Normalized Site Attenuation Considering the Medium Constant of the Peripheral Ground
The Site Attenuation (SA) and Normalized SA (NSA) are used as a parameter of compatibility of the
open site where leakage electromagnetic waves from electronics and communication devices are measured.
Generally, NSA is calculated by GO (geometrical optics) as the transmission loss between the sending and
receiving antennas above an infinite ground plane. However, an open site is constructed on a finite conducting ground plane. Therefore, diffracted fields from the edges of the finite ground plane and its peripheral
ground should be considered.
In this paper, the effect of size of rectangular conducting plane on NSA is considered by the Hybrid
method (Moment method + GTD (Geometrical Theory of Diffraction)). And NSA is calculated numerically
considering the peripheral ground, then the results are compared NSA on an infinite conducting plane and
the rectangular conducting plane which is floated. These results show that the rectangular conducting plane
on the ground is understood, for both horizontally and vertically polarized waves, the effect of edge diffraction is small. And as steadily enlarging the conducting plane, the effect of the edge diffraction becomes
small. The influence of the edge diffraction on the dry ground is larger than on the damp or standard ground.
Keywords: Open site, NSA, GTD, Moment Method, medium constant
―１５１―
管理工学専攻 Graduate Course ofManagement and Systems Engineering
王
嵐：インターネット時代における決済サービス――日本と中国の決済事情について――
Wang Lan: Settlement services in the Internet age
――About the settlement circumstance ofJapan and China――
Development of information technology in the latter half of the 20th century has been remarkable. Because Internet spreads rapidly, the whole business system and an idea of consumption by people have
changed amazingly. Many of people have a tasted the new business activities through Internet, and a domain of the settlement to be accompanied with for business necessarily at the same time brings a big change.
Development of electronic commerce depends on an ideal method of a settlement greatly, and the security
on Internet and the effective settlement methods become essential.
Keywords: Internet, Internet banking, electronic money, electronic commerce, the settlement, electronic
settlement
清水洋輔：技術者教育における学習環境のモデリング
Yosuke Shimizu: Modeling oflearning environment in engineer education
The interactive system is the practical and structural learning environment and its subject is the learner.
And it’s essential that the learner and the teacher gain the autonomy. In this research, we evaluate structurally the essences that arise from the group ideas of the learner side, the teacher side, and the management
side. Also, we create the interactive system model that has the main three issues, Knowledge creation,
Maintenance of motivation, and Management. The base of Design of the Interactive-System is cognitionstyle, Spiral structurizing education and power base.
Keywords: Engineer education, learning environment, thought model, communications
津川智行：ブロック押しタスクにおける協力行動の生成
Tomoyuki Tsugawa: Generation ofcooperative action in block pushing problem
Multi-agent systems have advantages capable of searching goals that are difficult to active by single
agent and shortening time to accomplish the goal by cooperating with other agents. In this paper, the reinforcement learning algorithm is applied to the multi-agent block pushing problem. The learning process of
the cooperative behavior of two or more agents was observed in consideration of the depth of agent’s view
and the setting of the reward.
Simulation results show that the number of episode necessary for the generation of the cooperative action depends on the depth of agent’s view and the best effective strategy after cooperation is to distribute
even reward to each agent.
Keywords: Reinforcement Learning, Multi-agent, Q-Learning, Cooperative action
西村宗珠：データフュージョンを意識した衛星画像の重ね合わせ手法に関する研究
Hiromi Nishimura: A Study of Registration Method for Satellite Images Concerned in Data Fusion
Many types of satellite sensors are developed and available. So, we can obtain many types of image
data. By analyzing those with the data fusion technique, we can acquire the detailed information of the
earth’s environment. These images, however, usually have relative discrepancy due to their own geometrical
property. Therefore, it is necessary to remove the relative discrepancy from the image data before analyzing
them. In this study, we propose an automated registration method for multisensor image data. This method
automatically estimates the linear discrepancies based on the ratio of spatial resolution, the relative rotation
and shift among multisensor images using coss correlation technique. To the remaining discrepancies after
removing them, corresponding point pairs are automatically generated using the spatial correlation technique. Finally, the image are precisely registered with gradated point pairs. In this thesis, the principle and
the procedure of our proposed method are described. Application result of the method are also shown.
Keywords: Remotely Sensed Images, Geometrical Discrepancy, Registration, Data Fusion
―１５２―
萩尾浩二：株式投資におけるポートフォリオ選定についての一研究
Koji Hagio: A Study on Portfolio Selection Strategies for Stock Investment
In the stock market, it is one of the aims for investors to beat the market, i.e., outperform the benchmarks such as Nikkei Average. This aim, however, is not easy to achieve even for the professional fund
managers. In this study, we propose an easy-practicing portfolio selection strategy, named D-10, to overcome the difficulty.
The D-10 strategy is an application of the Dow-10 strategy, which consists of buying the ten highest
yielding Dow stocks and rebalancing annually, to Japanese stock market. Similar to Dow-10, we propose to
buy the ten highest yielding Nikkei 225 stocks or TOPIX Core 30 stocks and rebalancing annually.
And simulation results show the strategy is effective.
Keywords: D-10 strategy, Dow 10 strategy, stock investment, portfolio selection
溝本裕：マルコフ連鎖モンテカルロ法による経験強化型強化学習の方策改善
Yutaka Mizomoto: A Policy Improvement of Exploitation-Oriented Reinforcement Learning by
Using a Markov Chain Monte Carlo (MCMC).
Reinforcement Learning (RL) is a type of machine learning algorithm and attempts to find a policy for
maximizing long-term rewards adapting to environment. The policy is expected to be effectively improved
by probabilistic knowledge. A probabilistic knowledge is estimated by the Markov Chain Monte Carlo
Method (MCMC) using incomplete information in RL process. In this paper, a policy improvement method
using the probabilistic knowledge is studied. Proposed method is applied to a pursuit game and compared
with the ordinary method.
Keywords: Reinforcement Learning, Probabilistic Knowledge, Exploitation-Oriented Reinforcement,
Learning, Policy Iteration

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