抄
研究論文抄録研 究 論 文 抄 録（2006年１月～12月）

物質生命理工学科
R. Saito, S. Naruse, K. Takano, K. Fukuda, A. Katoh,

VO(O4) coordination mode, bis(allixinato) oxova-

and Y. Inoue：“Unusual Temperature Dependence of

nadium(IV) (3) which contains allixin, a garlic

Enantioselectivity in Asymmetric Reductions bycomponent, was found to be the most potent

Chiral NADH Models”, Organic Letters, Vol. 8, No. 10,

antidiabetic agent amoung them.

pp.2067-2070, 2006. 6

with a high in vitro insulin-mimetic activity in

邦文題目：キラルNADHモデルによる不斉還元におけるterms of both free fatty acid (FFA)-release in-

エナンチオ選択性に対する異常な温度依存性

hibitory and glucose-uptake enhancing activities

Complex 3

Unusual stereoselectivity changes, i.e., en-in isolated rat adipocytes exhibited a high hypo-hancement and inversion of enantioselectivity

glycemic effect in type 1 diabetic model mice bywith increasing temperature, were observed inboth intraperitoneal injections and oral admini-

the asymmetric reduction of methyl benzoylfor-

strations.

mate with chiral 1,4-dihydropyridines possessingof the most effective candidates for antidiabetic

amino acid residues as ligating chiral auxiliaries.

therapy.

Complex 3 is thus proposed to be one

The differential activation parameters, ∆∆Η S-R≠

and ∆∆S ≠ S-R ， obtained from the Eyring plots

H. Sakurai, A. Katoh, and Y. Yoshikawa：“Chemistrydemonstrate that the entropy term controls theand Biochemistry of Insulin-Mimetic Vanadium andenantiodifferentiating step, accounting for the

Zinc Complexes: Trial for Treatment of Diabetes Mel-observed unique temperature dependence.

litus”, Bulletin of the Chemical Society of Japan, Vol.
79, No. 11, pp. 1645-1664, 2006.11

Y. Adachi, J. Yoshida, Y. Kodera, A. Katoh, J. Takada,

邦文題目：バナジウムとジンク錯体の化学及び生化学：

and H. Sakurai ： “Bis(allixinato)oxovanadium (IV)

糖尿病治療の試み

Complex is a Potent Antidiabetic Agent: Studies on

The number of patients suffering from diabetes

Structure-Activity Relationship for a Series of Hy-

mellitus (DM), which is a chronic metabolic dis-

droxypyrone-Vanadium Complexes”, Journal of Me-order and mainly classified as either insu-

dicinal Chemistry, Vol. 49, No. 11, pp.3251-3256,

lin-dependent type 1 or non-insulin-dependent

2006.6

type 2, is increasing throughout the world. Se-

邦文題目：ビス（アリキシナト）オキソバナジウム(IV)quence of DM makes this disease a major health

錯体は有力な抗糖尿病剤である：一連のヒドロキシピロ

risk in regard to microvascular disease that leads

ン－バナジウム錯体における構造―活性相関

to kidney failure, blindness, and nerve damage as

There is an urgent medical need for orally ef-

well as macrovascular disease that leads to am-

fective drugs to replace insulin injections for theputations, cardiovascular disease, and stroke. To

treatment of diabetes mellitus. Vanadium com-treat DM, several types of insulin preparations

plexes with insulin-mimetic activities have re-and synthetic drugs for type 1 and type 2 DM,

cently been proposed as candidates as newrespectively, are in clinical use. However, there

antidiabetic drugs.

Following in vitro and inare several problems concerning the insulingroupbis(3-hydroxy-

preparations and synthetic drugs, such as physi-

4-pyronato)oxovanadium(IV) (1) complexes withcal and mental pain due to daily insulin injections

vivo

studies

on

a

of

－121－

and defects involving several side effects, respec-

primary ion effect of Au3+, compared with Au+,tively. Thus the disease demands extraordinary

therefore, was estimated to be about 10 to 45.

effects to define pathobiochemical pathways andstrategies for prevention and to find new thera-

濱野裕之・小島紀徳・河原崎里子・高橋伸英・田原聖隆・

peutic approaches. For this purpose, oxovana-

田内裕之・江頭靖幸・齊藤昌宏・安部征雄・山田興一：「乾

dium(IV) (vanadyl, VO2+) and zinc(II) containing燥地における焼成ボーキサイトの土壌改良としての利

complexes are anticipated to treat both types of用」，沙漠研究, 16-1, pp.31-38, 2006. 6

DM. This article reviews the current state of re-Three years’ field test of Casuarina obesa

search on insulin mimetic and antidiabetic metal

planting was conducted to test the possibility ofcomplexes, with special focus on the paramag-

use of calcined bauxite, available in large quanti-

netic vanadyl and diamagnetic zinc(II) complexes

ties and at relatively low cost, as soil conditioner

with different coordination modes, together withfor the afforestation in arid land of Western Aus-

the possible action mechanisms. New drug deliv-

tralia.

ery systems involving enteric-coated capsulation

ite was evaluated from the changes in water con-and a biopolymer are also reviewed.

tent in soil and average tree height, biomass after

The effect of utilization of calcined baux-

three years and eye observation of root system.
K. Aimoto, S. Aoyagi, N. Kato, N. Iida, A. Yamamoto,

Four soil conditions were tested : natural soil,

M. Kudo, ： “Evaluation of secondary ion yield

5cm top gravel followed by 20 cm calcined bauxite,

enhancementusing

5cm top gravel followed by 20 cm 10% calcined

TOF-SIMS equipped with a gold cluster ion source”

bauxite mixed with natural soil, and 25cm gravel

Appl. Surface Scie., pp.6547-6549, 2006.4

layer.

邦文題目：金クラスターイオン源を備えたTOF-SIMSを

were obtained.

用いたポリマーからの二次イオン収率増大効果の評価(1) The survival rates of the trees with andfrompolymermaterialby

As the result, the following conclusions

We investigated the enhancement of the sec-

without soil modification were 100% and 80%,

ondary ion intensity in the TOF-SIMS spectra

respectively, though some effects of damage by

obtained by Au+ and Au3+ bombardment in com-

Kangaroo exist.

parison with Ga+ excitation using polymer sam-(2) The tree growth data under the various soil

ples with different molecular weight distributions.

conditions were Bauxite only > Gravel only >Since the polymer samples used in this experi-

10% bauxite layer > natural soil.

ment have a wide molecular weight distribution,(3) The intermittent rainfall of about 10-20mm

the advantages of the gold cluster primary ion

was more effective to the soil moistures in-source over monoatomic ion could accurately becrement and tree growth than concentrated

evaluated. It was observed that the degree ofrainfall over 40mm.

fragmentation decreased by the usage of cluster(4) The biomass increase after the three years’

primary ion beam compared with monoatomic ion

growth with soil modification was found to bebeam, which was observed as a shift of the inten-

larger than that without soil modification.

sity distribution in the spectra. It was also found(5) The improvement of water retention capacity

out that the mass effect of Au+ and Ga+ aswith bauxite was suggested by the averaged

monoatomic primary ion, resulted in about 10 totree growth data and eye observation, though

60 times of enhancement for both samples withthe statistic analyses could not show clear

different molecular distributions. On the other

difference between the cases with gravel andhand, theAu3+

with bauxite.

bombardment caused intensity

enhancement about 100 to 2600 compared with
Ga+ bombardment, depending on the mass range

N. Saikia, S. Kato, T. Kojima：“Behavior of B, Cr, Se,of the detected secondary ion species. The cluster

As, Pb, Cd, and Mo Present in Waste Leachates Gen-－122－

erated from Combustion Residues During the Forma-

Sequestration of CO2 is necessary for miti-tion of Ettringite”, Environmental Toxicology andgating global warming and recently, large-scale

Chemistry, Vol. 25(7), pp.1710-1719, 2006. 7

afforestation in desert is focused on the need for

邦文題目：焼却残査から生じる浸出水中に存在するB, Cr,

CO2 fixation. We set up the research site for af-

Se, As, Pb, Cd および Moのエトリンガイト形成時の挙foreatration in Leonora area, Western Australia.

動Eucalyptus camaldulensis (Eucalyptus is abbreThe behavior of B, Cr, Se, As, Pb, Cd, and Mo

viated as E. in the following) has the highest

in the leachates generated from two combustion

carbon fixation ability in all trees of Leonora

residues, coal-fired power plant fly ash and mu-

area, the amount of carbon fixation ability isnicipal solid waste incineration ash, during pre-about 300kg･Carbon/tree and the growth time of

cipitation of ettringite is presented. Experiments

E. camaldulensis is about 20 years (Yamada etalso were performed using modeled wasteal., 1999). Salt tolerance maximum of E.

leachates as well as controlled solutions con-camaldulensis is about 0.02 g/cm3 (Peter andtaining all the investigated elements. Moreover,Glen 1993). The water source of E. camaldulen-

to determine the possible effect of pH, lime

sis is also estimated to be groundwater in Leon-

treatment was conducted using the waste andora area Soils around E. camaldulensis planta-

modeled leachates. Results indicated the re-tion, it is necessary to evaluate salt accumula-moval of B, Se, and Cr from the leachates be-tion and water movements in soils for E.

cause of incorporation of their oxyanions in the

camaldulensis plantation. In this paper, rela-

ettringite structure. The removal of B could

tionship between the calculated time variation offurther be explained by considering the struc-salt concentration in soils and growth year of E.

ture of ettringite and monosulfoaluminate. The

camaldulensis was reported. The salt concen-

removal of Pb also occurred, probably because of

tration change in soils for one year to 100 years

lime-induced precipitation of Pb(OH)2. Similarly,

scales are discussed by changing of many pre-the removal of As was observed as a result ofcipitation patterns are also evaluated. The re-lime-induced precipitation of Ca3(AsO4)2 andsults of calculation indicated that time of salt

incorporation into the ettringite structure. On

concentration in soils until 0.02 g/cm3 takes fromthe other hand, the precipitation of ettringite did

50 to 90 years. Thus, because it is said that the

not reduce the concentrations of Mo and Cd be-

growth time of E. camaldulensis in Leonora area

cause of the complex nature of these elements in

is about 20 years (Yamada et al., 1999), it was

the leachates. The results also suggest that thecleared that salt accumulation problem againstpresence of high amounts of constituents such as

E. camaldulensis plantation would not occur for

Cl2, an alkali metal in the solution, also affectedshort period.

ettringite

precipitation

behavior.

Moreover,elemental speciations as well as the presence of

菅沼秀樹・長谷修平・安部征雄・田内裕之・小島紀徳・

other constituents in the solution affected the

山田興一：「植生指数と植生分類を組み合わせた乾燥地林

incorporation by ettringite.

分バイオマス推定手法の有効性の検討」,日本リモートセンシング学会誌,26(2) 95-106,2006.4

T. Matsumoto, T. Kojima：“Simulations of salt accu-

As one of the activities for CO2 sequestration

mulation at soil surface under different annual pre-source by afforestation at the project level, acipitation amounts in arid Leonora area, Western

systematic afforestation method in an arid area

Australia”, J. Arid Land Studies, 16-1, pp.53-59, 2006.

has been proposed, and Australia was chosen as

6

the research area. In Australia, a pioneering

邦文題目：西オーストラリア・レオノラ地域での降雨

trial called the National Carbon Accounting

量の違いによる土壌表層の塩濃度予測

System (NCAS) has already been established,－123－but most of the arid areas are left unmeasured

った。穂ばらみ期に散布した場合では草丈，茎数，

using the NCAS. Therefore, the carbon seques-

収量のいずれにも影響はなかった。また，1994年度

tration estimation techniques based on the timeの実験では，圃場に流入する用水の土砂濃度がchange of forest inventory information has not

10,000mg/l以下であれば，生育状況，水稲の養分，

been determined. Thus, in this research, the

跡地土壌の化学特性，収量のいずれについても影響

combination of vegetation classification usingのないことが明らかになった。

the decision tree method and the stand biomass
estimation method utilizing vegetation indicesH. Liu, C. Luo, S. Kato, S. Uemiya, M. Kaneko andwas examined. These vegetation indices were

T. Kojima：“Kinetics of CO2/Char Gasification at Ele-described as mitigating influence of backgroundvated Temperatures. Part I：Experimental Results”,

soil reflection. The vegetation classification ac-

Fuel Processing Technology, 87, pp.775-781, 2006.10

curacy of this study was 77~90%. Strong corre-

邦文題目：高温条件下でのCO2/チャーガス化速度：第一lations between the vegetation indices except

部，実験結果MSAVI1 and the stand biomass were observed

The gasification kinetics of char has so far beeneven in this open canopy forest. Among the ex-mainly studied based on data measured at low

amined vegetation indices, MSAVI2 and OSAVI

temperatures and low heating rates with awere particularly considered to have sufficient

thermo-gravimetric analyzer. The results cannot

accuracy and robustness for stand biomass es-

be directly applied to high temperature gasifiers

timation and considered to be applicable to othersuch as entrained flow gasifiers. In this work,

arid land vegetation. However, from the result ofgasification of seven types of chars in CO2 at ele-

this study, the accuracy of stand biomass esti-

vated temperatures and high heating rates was

mation with vegetation classification resulted ininvestigated with a uniquely made fluidized bed.

lower than that without classification. If theIt was found that the reaction rates for various

vegetation classification accuracy is not suffi-chars were very different in low and high tem-

ciently high, the stand biomass estimation util-

perature ranges, and two orders of magnitude

izing satellite imagery, which has low spatial

more pronounced in the lower temperature range.

resolution and has low spectral resolution, wasFrom 1273 K to 1673 K, all chars demonstrated aconsidered to be handled with as simple processstrong tendency to increase reaction rate withas possible

temperature. However, at a high temperature
range (1773 to 1873 K), different chars demon洋・小島紀徳：「用水中にstrated different temperature dependences. The

含まれるダム排砂土の水稲生育への影響」農業土木学会

seven types of chars studied can be roughly

堀雅文・田野中論文集

新・若林

74（5）通巻245号

683-689, 2006.10

separated into three groups based on ash fusion

黒部川出し平ダムからの排砂により，ダム湖に堆

temperature. Each group demonstrated a differ-

積した土砂が黒部川に排出される。この土砂が用水

ent temperature dependence at a high tempera-に混ざり，圃場に流入した場合の水稲の生育に与えture range. For chars with low ash fusion tem-

る影響を検討するため，黒部川扇状地内の圃場で実

peratures, the reaction rate leveled off, or even験を行った．出し平ダムから採取した土砂を，圃場

decreased a little as temperature increased,に設置した試験区に散布し，水稲の生育，収量等をwhich was presumed to be because of the ash fu-

調査した。1993年度は，苗の活着期及び穂ばらみ期

sion at elevated temperatures. These resultsへの影響を調査するため，5月及び８月に土砂を散

suggest that a high temperature does not neces-

布した。1994年度は，活着期への影響を再度調査すsarily raise the gasification rate.

るため，５月に土砂を散布した。1993年度の実験では，活着期に散布した場合は，茎数には土砂散布の

H. Liu, C. Luo, M. Toyota, S. Uemiya and T. Kojima:

影響はあったが，収量については影響が見られなか“Kinetics of CO2/Char Gasification at Elevated Tem-

－124－

peratures. Part II ： Clarification of Mechanism

tion fly ash (MSW ash) samples. XRD techniquethrough Modeling and Char Characterization”, Fuelwas used to monitor the phase formation during

Processing Technology, 87, pp. 769-774 , 2006.10

the burning of the raw mixes. The amount of

邦文題目：高温条件下でのCO2/チャーガス化速度：第二trace elements volatilized during clinkerization

部，モデル化とチャーのキャラクタリゼーションによるand hydration, as well as leaching behaviours of

機構解明験結果

the clinkers obtained from optimum compositions,Char gasification experiments in a batch fluid-

were also evaluated. From the results it is ob-

ized bed reactor at high temperatures revealed

served that all of the major components of ordi-that for chars with low ash fusion temperatures,nary Portland cement (OPC) clinkers are present

the reaction rate levelled off or even decreased ain the produced clinkers. Results also show thelittle as temperature increased. The mechanism

volatilization of considerable amounts of Na, K,

was studied through modelling and char charac-

Pb, Zn and Cd during the production of clinkers.

terization. Investigation through modelling re-

However, major parts of the toxic elements re-vealed that the increase in external mass transfer

maining in the clinkers appear to be immobilized

resistance with temperature was not the mainin the clinkers phases. Hydration studies of thefactor accounting for the leveling off or decreaseclinkers obtained from optimum compositionsof gasification rate of a char at elevated tem-show that the clinkers prepared from raw MSW

peratures. At high temperatures, the porosity andash are more reactive than the washed MSW ash

specific surface area increased with pyrolysis

based clinkers. TG/DTA analyses of the hydrated

temperature for a char with a high ash fusion

pastes show the formation of hydration products,

temperature, but decreased for a char with a low

which are generally found in OPC and OPC de-ash fusion temperature. For a char with a low ash

rived cements. The initial study, therefore, shows

fusion temperature, the surface became smooththat more than 44% of MSW ash with the addi-

and ash accumulation near the char surface wastion of very small amounts of silica and iron oxideapparent after pyrolysis at an elevated tempera-

can be used to produce cement clinkers. The

ture. However, for a char with a high ash fusion

amount of CaCO3 necessary to produce clinkers

temperature, its surface became porous and no(approximately 50%) is also smaller than theash accumulation occurred after pyrolysis at ansame required for the conventional process (moreelevated temperature. According to the results ofthan 70%).

this work, ash fusion and ash accumulation near
the char surface were very likely the main factors

P. S. Vijayanand, S. Kato and T. Kojima：“Synthesis

accounting for the leveling off, or decrease, ofand characterization of 3, 5-dimethoxyphenyl

gasification rate at elevated temperatures.

methacrylate and methyl methacrylate copolymers:
determination of monomer reactivity ratios”, J. Mac-

N. Saikia, S. Kato and T. Kojima：“Production of ce-romolecular Science-Pure Applied Chem., 44(3).pp

ment clinkers from municipal solid waste incineration

277-283, 2007.1(NSWI) fly ash”, Waste Management, 27 (2007)1178-

邦 文 題 目 ： 3, 5-dimethoxyphenyl methacrylate と1189 ,2007. 3

methyl methacrylateとの共重合体の合成とキャラクタ

doi:10.1016/j.wasman.2006.06.004(online available 22

リゼーション：モノマー活性比の決定

Aug. 2006)

A new monomer, 3, 5-dimethoxyphenyl

邦文題目：都市ゴミ焼却灰からのセメントクリンカーのmethacrylate (DMOPM) has been synthesized

製造from the precursor viz.,3,5-dimethoxy phenol.
This communication reports the laboratory

Copolymerization

of

DMOPM

with

methylscale study on the production of cement clinkers

methacrylate (MMA) has been carried out infrom two types of municipal solid waste incinera-

ethyl methyl ketone (EMK) by free radical solu-－125－tion polymerization at 70+18C utilizing benzoyl

are compared between simulations and experi-

peroxide (BPO) as initiator. Poly(DMOPM-co-ments, which can be explained by stick-slip mo-

MMA)tion of the tip apex atom and flake.

copolymers

werecharacterizedby

1H-NMR,13C-NMR, and the copolymer composi-

graphite/C60/graphite

tions were evaluated by 1H-NMR spectroscopy.

appears, where the maximum static frictional

The monomer reactivity ratios were estimatedforces have finite values but denote that dy-

using Fineman-Ross, Kelen-Tudos and extended

namical frictional forces are zero within the

Kelen-Tudos methods. The solubility was tested

resolution of the experiment. Furthermore, forin various polar and non polar solvents. The mo-the C60 intercalated graphite system, greater

lecular weight and polydispersity indices of thesuperlubricity

copolymers were determined by using gel per-fullerene intercalated graphite films exhibit ul-meation chromatography. By TGA and DSC

tralow average friction force, and excellent fric-analyses, the thermal properties of the polymers

tion coefficients . Our results propose one of thehave been studied.

simple guidelines of designing a practical super-

appears.

system,For theItissuperlubricity

clarifiedthatlubric system - reduction of the contact area beK. Miura, D. Tsuda, Y. Kaneta, R. Harada, M. Ishi-

tween intercalated C60 and graphite sheet to thekawa and N. Sasaki：“Dynamics of Graphite Flake

point contact. Clearly, the C60 intercalated

on a Liquid”, Applied Physics Letters, Vol.89,

graphite system will contribute to solving energy

pp.2231041- 2231043, 2006.11

and environmental problems in the future.

邦文題目：液体上のグラファイト薄膜の動力学
This is one of our nanomechanical studies fromK. Shimizu, N. Kobayashi, A. Satsuma, T. Kojima, S.

experimental standpoints of view. One-directional

Satokawa：“Mechanistic study on adsorptive removal

motion, where graphite flakes are driven byof t-butanethiol on Ag-Y zeolite under ambient condi-

a nanotip on an octamethylcyclotetrasiloxanetions”, J. Phys. Chem. B, 110, pp.22570-22567 (2006),(OMCTS) liquid surface, is presented.

2006.10A transi-tion from quasi-periodic to chaotic motions occurs

邦文題目：常温常圧下でのAg-Yゼオライトによるターシ

in the dynamics of a graphite flake when its ve-ャリーブタンチオールの吸着除去機構

locity is increased. The dynamics of graphite

The dynamics and surface chemistry of

flakes pulled by the nanotip on an OMCTS liquid

tert-butanethiol (TBT) adsorptive removal oversurface can be treated as that of a nanobody on asilver-exchanged Y zeolite (Ag-Y) were studied

liquid.

under ambient conditions. Saturation uptake on
Ag-Y was higher than that on H-Y and Na-Y. The

N. Sasaki, N. Itamura, D. Tsuda and K. Miura：

structural analyses by a combination of X-ray“Nanomechanical Studies of Superlubricity”, Current

diffraction, Ag K-edge X-ray absorption near-edge

Nanoscience. Vol.3, pp. 105-115, 2007.2

structure (XANES)/extended X-ray absorption

邦文題目：超潤滑のナノ力学的研究

fine structures (EXAFS), Ag LIII-edge XANES, S

This is one of our nanomechanical studies from

K-edge XANES, and in situ UV-vis show that theboth experimental and theoretical standpoints of

AgSH molecule, Ag2S monomer, and Ag4S2 clusterview.

We briefly review the nanomechanicalare the dominant silver species in TBT-saturated

studies of ultralow friction in the following carbon

Ag-Y. Dynamic changes in adsorbed intermedi-

hybrid systems:atomic force microscopy (AFM) tip

ates, gas-phase products, and the silver sulfides

on graphite surface, AFM tip on C60/graphite,were followed by in situ FTIR, mass spectroscopy

graphitegraphite/C60/

and in situ UV-vis, respectively. The results show

graphite, and C60 intercalated graphite. For thethe following reaction mechanism: (1) formation

atomic and flake frictions, frictional force mapsof iso-butene and adsorbed H2S on the Ag+ site via

ongraphitesurface,－126－

C-S cleavage of hydrogen-bonded TBT initiallyzeolite, which was shown to have high sulfur ca-

adsorbed on the Ag+ site; (2)conversion of the ad-pacity in the literature. The structural analyses

sorbed H2S to AgSH and H+ on zeolite; (3) the re-by XRD, TEM, Ag K-edge XANES/ EXAFS, and inaction of two Ag-SH species to yield Ag2S and H+

situ UV-vis show that the reaction of Ag+ species

on zeolite.

on these samples with TBT yields AgSH species,
Ag2S monomer, Ag4S2 cluster, and Ag2S particles.

S. Satokawa, J. Shibata, K. Shimizu, A. Satsuma, T.

Dynamic changes in adsorbed intermediates andHattori, T. Kojima：“Promotion effect of hydrogen on

the silver sulfides were followed by in situ FTIR

lean NOx reduction by hydrocarbons over Ag/Al2O3

and in situ UV-vis, and the following reaction

catalyst”, Chem. Eng. Sci., 62, pp.5335-5337 (2007),

mechanism is presented: (1) reaction of Ag+ with

2006.12

TBT to produce butenes and AgSH species; (2)

邦文題目：銀アルミナ触媒上での炭化水素によるNOx還元

reaction of the two AgSH to produce Ag2S mono-

反応における水素の反応促進効果

mer and H2S; (3) aggregation of Ag2S monomer to

Addition of H2 in the lean exhausts signifi-(Ag2S)n clusters and Ag2S particle.

cantly improves the NOx reduction activities at
low temperatures by hydrocarbons over Ag/Al2O3

里川重夫：「銀イオン交換ゼオライトを用いた都市ガス常catalyst. This discovery “hydrogen effect” pro-

温吸着脱硫に関する研究」成蹊大学理工学研究報告，

vides a novel approach to the design of SCR sys-Vol.43, No.2, pp.11-14 (2006), 2006.12

tems. We concluded that the catalytic activity is

燃料ガス中に微量含まれる硫黄化合物，ジメチル

promoted by the reductive activation of O2 with

スルフィド（ DMS）及び t- ブチルメルカプタン

H2 and the production of moderately agglomer-(TBM），を常温で吸着除去できる脱硫剤を開発す

ated Agnδ+ clusters on the catalyst surface. How-る目的で各種金属イオン交換ゼオライトの硫黄吸

ever, the other research groups concluded that

着性能の評価を行った。燃料ガス中に不純物の水分

the formation of Agnδ+ cluster is not essential forが含まれている場合，Agイオン交換Y型ゼオライト

the enhancement of the SCR activity and it isの硫黄吸着容量が高く，Ag量の増加と共に硫黄吸

proposed that hydrogen itself participates directly

着容量も増加した。また，リーク硫黄濃度も0.1

in the reaction mechanism. Although the mecha-

ppm以下と低かった。硫黄化合物の吸着が進むに

nism of the “hydrogen effect” is under debate, the

つれて白色から茶色へと色相変化が観察された。

oxidative activation of hydrocarbons is the key

DMSは分子状で吸着されていると推測されたが，step to obtain high SCR activity at lower tem-

TBMは吸着後に分解反応が進行し，最終的には硫

peratures.

化銀様クラスタを形成して発色しているものと結論した。

K. Shimizu, S. Komai, T. Kojima, S. Satokawa,
A. Satsuma：“Mechanism of adsorptive removal of

K. Takizawa and Y. Yokota：“High Accuracy and Hightert-butanethiol under ambient conditions with silver

Sensitivity measurements of the Electrooptic Effect innitrate supported on silica and silica-alumina”, J.

Undoped and MgO-Doped LiNbO3 Crystals”, Opt. Rev.,

Phys. Chem. C, 111, pp.3480-3485 (2007), 2007.2

Vol. 13, No. 3, pp.161-167, 2006.5

邦文題目：常温常圧下でのシリカ及びシリカアルミナ担

邦文題目：ノンドープおよびMgOドープLiNbO3結晶の持硝酸銀によるターシャリーブタンチオールの吸着除去

電気光学効果の高感度・高精度測定
Composite electrooptic (EO) coefficients rc con-

機構
Vapor-phase adsorptive removal of tert-butanethiol

sisting of the EO coefficients r 13, r 33 , and thepiezoelectric(AgSi) and silica-alumina (AgSiAl) is tested under

MgO-doped LiNbO3 (LN) crystals were measured

ambient conditions. Saturation uptakes on AgSi

by extracting the fundamental and the third

and AgSiAl are close to that on Ag-exchanged Y

harmonic components from photo-detection sig-

－127－

constant

d31(TBT) over silver nitrate supported on silica

inundopedandnals of the parallel Nicol optics including the LN

systemcrystal driven by minimal sinusoidal voltage.

low-pass filter, a function generator, a high-power

The analysis of relationship between multi-

amplifier and a personal computer. Several ex-

ple-reflection rays in the LN crystal and theperiments using rotating quarter-wave plate andaccuracy

that

LiNbO3 crystal in presence of direct voltage haveanti-reflection films must be coated on the end

been performed, and the measurement results

faces of the crystal for highly accurate measure-

agree well with predicted theoretical data.

ofmeasurement

indicates

includingtwolock-in

amplifiers,aments. Measured values of rc of undoped andMgO-doped LN crystals at a wavelength of 0.6328

K. Takizawa, Y. Yoshida and N. Saito：“Design Con-μm were 19.8±0.1 pm/V and 19.2±0.1 pm/V,sideration of a Television Camera Detecting Oil Slicks

respectively.

on the Sea”, Opt. Rev., vol. 13, No. 5, pp.361-370,
2006.10.

滝沢國治：「高分子分散液晶ライトバルブとシュリーレン

邦文題目：油膜検出用TVカメラの設計

光学系を用いた投射型3-Dディスプレイ：システム提案

We have proposed an oil-slick image detectionと基礎実験」成蹊大学理工学研究報告, Vol.43, No.1,

television camera that extracts automatically the

pp.39-47, 2006.6.

image of slicks floating on the surface of the sea.

偏光眼鏡を使用する投射型3-Dディスプレイが提The system includes two optical wavelength fil-

案されている。このディスプレイは高分子分散型液

ters (WFs), two charge coupled devices and a dif-

晶ライトバルブ，偏光ビームスプリッタおよびシュ

ferential image circuit in which the output image

リーレン光学系からなり，高分子分散液晶の光散乱

signal is the absolute value of a difference signal

特性を利用して，高輝度・高コントラストな大面積

between two input image signals.

3-D映像を表示するシステムである。このシステム

principle is based on the fact that, due to theは，3-D画像を１台の投射装置で表示可能，従来のmultiple-beam interference in the slick, there is a

装置の1/２のサイズ・重量，画像の拡大縮小を自由

marked difference of intensity between light re-にできる，など多くの特長を有している。高分子分

flected from the surface of the sea and that from

散液晶素子を作製し，クロスニコル・シュリーレン

the slick. The probabilities to sense the slick in

光学系を用いてその電気光学特性明らかにするととvarious conditions were calculated by use of two

もに，薄膜トランジスタで駆動する新しい高分子分

types of WF, i.e., a space-invariant WF and a散液晶ライトバルブを提案している。

space-variant WF and it was found that the latter

The operating

was far superior to the former.
L. Jin, K. Yonekura and K. Takizawa：“Fast and Simultaneous Measurement of Both Birefringence and滝沢國治：「空間光変調素子とシュリーレン光学系を用い

Azimuth Angle Using a y-Cut LiNbO3 Phase Modula-

た立体投射型ディスプレイの解析」, 成蹊大学理工学研

tor”, Jpn. J. Appl. Phys., Vol. 45, No. 6A, pp.

究報告, Vol. 43, No. 2, pp.39-47, 2006.12.

5244-5247, 2006.6.

偏光眼鏡を使用する新しい3次元投射型ディスプ

邦文題目：YカットLiNbO3位相変調器による複屈折と方レイの基本特性を解析した。このディスプレイは，

位角の高速・同時計測

高分子分散液晶ライトバルブ，偏光ビームスプリッ

A technique using a transverse phase modula-

タ，シュリーレン投射光学系などで構成され，小型・

tor is proposed for fast and simultaneous meas-

コンパクトで画像の拡大縮小を自由にできるというurement of both birefringence and azimuth angle

特長をもつ。Muller行列を用いてこのディスプレイ

of quartz and LiNbO3 crystals. The measurementのクロストーク（右眼用画像が左眼に入る現象ある

system consists of He-Ne laser as a light source, a

いはその逆の現象）および消光比（画面全体を白まpolarizer and an analyzer, a y-cut z-propagation

たは黒にしたときの明るさの比）を解析し，このシ

LiNbO3phase modulator, a quartz quarter-wave

ステムのクロストークが従来の3-Dシステムより各

plate, a photo-detector and a signal processing

段に少ないこと，および消光比が従来システムより－128－

To study these effects, we have designed a sample

やや劣ることなどを明らかにした。

holder with 3 QCM thickness monitors on its
蓮花・滝沢國治：「多重反射干渉法の測定

surface and measured the distribution of the de-

精度改善とLiNbO3結晶の電気光学係数r22の測定」, 成蹊

positing flux around the sample holder, including

大学理工学報告, Vol. 43, No. 2, pp.49-61,2006.12.

the circumvented deposition onto the back face.

米倉和也・金測定試料内の多重反射光の干渉を利用して，試料

As for the gas pressure dependence for a T-S dis-の光学特性を測定する多重反射干渉法は，きわめてtance of about 50mm, the relative deposition flux

単純な光学系であるにも関らず，従来のMichelsonon the back face was found to be at its maximum

干渉計やMach-Zehnder干渉計などと比べても同等

at pressures of 1~2 Pa.

以上の測定性能を有している。しかし，この方法はuniformity of the flux on the front face became

試料の屈折率が大きくなると測定精度が低下するとgradually worse.

いう課題を抱えていた。この論文では，干渉信号にcould be reproduced by a Monte-Carlo simulation

含まれる基本波成分が最大になるように試料の静的of the particle transport process.

位相と動的位相を調整し，屈折率に基づく系統誤差of the circumvented deposition and the uniform-を解消する改善策が提案されている。この改善方法

ity degradation at high gas pressures were as-

で数種類のLiNbO3結晶の電気光学係数r22を測定し，

cribed to the start of thermalization of sputtered

波長632.8 nmにおいて6.54±0.02 pm/Vを得た。こparticles and the shrinkage of its spatial profileの値は従来の測定値ともよく一致し，改良された多toward the target.

Above this pressure, theThe observed characteristics
The reduction

重反射干渉法の有効性が確かめられた。
Takeo Nakano, Takashi Fujimoto, Daisuke Nakada
蓮花・滝沢國治：「反射干渉法の測定精度

and Shigeru Baba：“Dielectric Breakdown Phenomena

改善とLiNbO3結晶の電気光学係数r22の測定」, 信学会論

during the Secondary Electron Emission Measure-

文誌C, Vol. J.89-C, No. 12, pp.1124-1127, 2006.12.

ment of Sputter Deposited MgO Films”, Japanese

米倉和也・金電気光学結晶内の多重反射による干渉を利用してJournalofApplied

Physics,

Vol.45,

No.10,

結晶の電気光学係数を測定する反射干渉法は，(1)pp.7875-7878, 2006.10

測定光学系が非常にシンプル，(2)全ての電気光学係

邦文題目：スパッタ製膜したMgO膜の二次電子放出測定

数を測定できる，(3)従来の干渉法に比べて誤差が少における絶縁破壊現象

ない，など多くの特長を有している。しかし，高次The ion-induced secondary electron emission

反射光に起因する理論系統誤差をもつという課題を(SEE) characteristics of sputter-deposited mag-抱えていた。この論文ではこの誤差を最小にする新nesium oxide (MgO) films have been investigated.

しい零位測定方法を提案し，応力一定状態のLiNbO3Using an RF magnetron sputtering apparatus,

結晶の電気光学係数r22を測定し，波長632.8 nmにおMgO films of 50 ~ 200 nm thickness were depos-

いて6.54±0.02 pm/Vを得た。この値は従来の測定

ited on Si substrates from a sintered MgO target.

値ともよく一致した。

Under irradiation of 1 keV of Ar+

ions, secon-

dary electrons were collected by a positively biTakeo Nakano and Shigeru Baba ： “Gas Pressure

ased electrode. The secondary electron current

Effects on Thickness Uniformity and Circumvented

increased as the bias voltage increased, andDeposition during Sputter Deposition Process”, Vac-saturated to give an SEE coefficient of 2 ~ 2.5 inuum, Vol. 80 No. 7 pp. 647-649, 2006.5

all samples. The deposition condition (gas pres-

邦文題目：スパッタ製膜プロセスにおける膜厚均一性・

sure 2 ~ 20 Pa) did not strongly affect this I-V

まわりこみ付着にガス圧力が及ぼす効果

characteristic of the SEE, while the increase in

In sputter deposition processes the thickness

film thickness resulted in the increase in the

distribution of the film is affected by experimen-

voltage at which the SEE current began to rise.

tal

tar-

This rising voltage depended neither on the en-get-substrate (T-S) distance, and target elements.

ergy nor on the current of the primary ion beam.

conditions

such

as

gas

pressure,－129－

We concluded that the rising voltage was deter-surface was compensated from the substrate. The

mined by an electric breakdown phenomenon by

field strength was estimated to be as large as 109

which the positive charge accumulating on the

V/m.

情
岩崎

報

科

学・阿部貴行：「打ち切りおよびトランケーション

学

科

上田

徹，佐藤

啓，廣津信義：「ハンドボールへのマルの下でのパラメータ推定に及ぼす切断点の影響評価」,

コフモデルの適用」オペレーションズ・リサーチ，Vol. 51,

応用統計学，Vol. 35，No. 1，pp. 49-60,2006. 7

No. 6, 2006. 6

打 ち 切 り (censoring) と ト ラ ン ケ ー シ ョ ン

野球やサッカーなどについては，モデリングに関(truncation) は，データの不完全性を惹起する要因

する研究が多くなされているが，ハンドボールに関となる。これらでは共に，ある閾値（切断点）c にするものは体育学的な文献が主であり，シュートや対し，c 以下（もしくは以上）となる観測値 x の値

ミスなどに関する統計的な調査やシミュレーションそのものは得られない。これまでの研究では，切断ソフトの開発事例などがいくつか公表されている程点 c はあらかじめ定められたものであり，その下で度である。本研究では，ハンドボールの試合をモデの母集団パラメータの推測法が多く論じられてきてル化するために，様々なマルコフモデルを適用し，いる。ここでは，切断点 c の値がパラメータ推定に

これらを期待得点と実試合の結果とを比較すること及ぼす影響を，切断点 c の微小な変化により考察しでモデルを評価してみた。また，モデルを簡易化・ている。その影響評価は，尤度方程式から導かれる

詳細化することによりどの程度の違いがあるか検討

陰関数を用いて行ない，特に，応用上重要な指数分すると共に，各プレーの得点に対する影響を，弾性布および正規分布について，数値例を交えて詳しく値を用いて分析してみた。ハンドボールについては，

議論している。その結果，打ち切りとトランケーシ

ゲームのモデリングの試みが緒についたばかりであョンでは切断点 c の影響が逆向きであること，おより，研究としてはまだまだこれからといえるが，具びトランケーションの場合には c の影響が観測デ

体的なモデルと検討結果を例示したので，モデリン

ータ数に依存しないことが示された。

グに当たっての今後の研究のための参考事例となると考えている。

阿部貴行・稲葉由之・岩崎

学：「不完全データの統計解

析とそのソフトウェアの比較」, 計算機統計学，Vol. 18，

廣津信義，秋山大輔, 上田

No. 2，pp. 79-94, 2007. 2の視点からの評価」オペレーションズ・リサーチ，Vol.51,

医学研究をはじめとする実証分析では，様々な理由

徹：「サッカー選手のDEA

No.10, pp. 655-661, 2006.10

によりデータに欠測が生じるなど，研究者は不完全デ

DEA（Data Envelopment Analysis）によるスポータに直面することが多い。その種の不完全データはーツ選手の評価としては，野球に関する事例が主で不可避であり，その処置は実際のデータ解析を実行すあり，サッカーについては，選手や監督への報酬をる上で，研究者の悩みの種となっている。この種の状入力とし観客数や歳入などを出力としてチームを評況に対処するため，近年，不完全データの解析をサポ価した事例はあるものの個々の選手の評価は試みらートする商用のソフトウェアが現れつつある。本論文れていないようである。ところが，近年サッカーででは，不完全データの解析をサポートするいくつかのも，細かいゲームの分析がなされるようになり，オ

ソフトウェアの機能や特徴の比較検討を行なっている。

プタポイントという選手の評価指標が公開されてい不完全データの解析手法として，主にEMアルゴリズ

る。本研究では，このオプタポイントの算出のため

ムおよびMultiple Imputationを取り上げ，各種ソフトに取得されたデータの内，基本となる10項目のデー

ウェアの出力を比較すると同時に，実際のデータを用タを活用してサッカー選手のDEA評価を試みていいて不完全データの下での実践的な対処法を議論した。

る。まずは，最も一般的なCCR(Charnes, Cooper,

なお，本論文により，第一著者の阿部貴行は日本計

Rhodes)モデルでの評価をした後，領域限定を行いポジション毎で選手の評価をしている。また，効率算機統計学会の奨励賞を受賞した。

的な選手の相対評価をするため，クロス効率値を利－130－用した総合評価も試みている。これらの試みにより，eration home network”, Proc. SPIE Vol. 6354,

従来は得点数に偏りがちであった選手評価をDEA

Networkの視点から総合的に多角的に評価することができた。

Applications IV, pp. 63542J-1-63542J-11, 2006. 9

またオプタポイントなど他の指標と本手法で得られ邦文題目：次世代ホームネットワークにおけるホームゲ

た結果を比較することで，他の指標の特徴などにつートウェイの要求条件

Architectures,Management,

andThis paper first outlines the service image of

いて考察している。

the next generation home network, and then賢, 荒木俊郎：

clarifies the requirements regarding to the HGW「状態遷移図に基づくビジュアルWebブラウザ・プログ(Home Gate Way) that is a key player in control-

ラミングの提案」, 電子情報通信学会和文論文誌D, Vol.

ling all service traffic in the home. Finally, some

J89-D, No.10, pp.2246 - 2250, 2006.10

experimental results already obtained are also

山本瑞秋, 米倉達広, 岡本秀輔, 鎌田

described.

本論文では, 状態遷移図の編集とその自動変換によるWebブラウザ自動生成ツールを提案する。具体的には, カスタマイズ可能なWebブラウザ「Mozilla岡田耕平・小口喜美夫：「波長伝達マトリクス法を用いたFirefox」の拡張機能を利用した上記プロトタイプシ

ＷＤＭネットワークにおける波長ルーティング機能の確ステムを試作したので報告する。

認」成蹊大学理工学研究報告，Vol.43, No.2, pp.75-81,
2006.12
賢，米倉達広：波長伝達マトリクス法は，ＷＤＭネットワークに「BREW上のゲーム実行エンジン」，電子情報通信学会2

おいて複雑な構造となる波長ルーティング機能の設

種研究会 サイバーワールド(CW)第6回研究会, pp.19-22,

計と機能確認のためにきわめて有効な手段である。

2007. 3

本稿では，波長伝達マトリクス法の基本とその拡張

新留和哉，岡本秀輔，新堀道信, 鎌田

auの携帯電話上で動作するBREWアプリケーシについて記述する。次に，光加入者端末（ＯＮＵ）

ョンはEZアプリと呼ばれ，ゲームを中心に人気を得―局側終端装置（ＯＬＴ）間を直接接続できるフルている。KDDIから公式コンテンツプロバイダとしメッシュＷＤＭ受動光ネットワーク（ＰＯＮ）シスて採用された会社だけがEZアプリを作成できる。一テムを新たに提案する。また，提案システムにおけ般ユーザでもゲームを開発できるように，BREW上る波長機能を波長伝達マトリクス法を用いて解析すで動作するゲーム実行仮想マシンを開発した。ゲーる。

ムプログラミングのフロントエンドには，ユーザにやさしいインタフェースを持つIslayを利用する。

櫻井康樹，佐々木竜介，甲斐宗徳：「強マイグレーション

Islayから出力されるゲーム定義ファイルをバイナ

化モバイルエージェントシステムの実装とそれによる自リ形式ファイルに変換することによって，携帯電話

律分散処理システムの設計」, 成蹊大学理工学研究報告,

上での計算量とメモリの節約を図る。

Vol.43, No.1, pp.23-31, 2006. 6
本論文では，強マイグレーションモビリティに基福嶋誠治・杉本直登・赤津祐史・界義久・小口喜美夫：づくモバイルエージェントシステム，AgentSphere「ノートPC用光LANカード」電気学会論文誌Ｃ，Vol.

の設計と実装方法について述べる。強マイグレーシ

126，No.10，pp.1200-1204，2006.10

ョン，すなわちプログラムの実行途中からの移動を

ファイバ・ツー・ザ・デスクトップ（ＦＴＴＤ）

実現するためには，そのプログラムの実行コード，

ネットワークの実現をめざして，ＰＣＭＣＩＡカー

プログラムカウンタ，ヒープエリアおよびスタック

ドとコンパチビリティを持つノートPC用光LANカ

エリアの内容をすべて移動しなければならない。実ード開発した。本論文ではその構造と特性を記述す

行コードとヒープエリアの内容を移動するためには，ると同時に，オフィスや家庭におけるネットワーク

Javaのシリアライズ機能がある。しかし，プログラ

応用についても言及する。

ムカウンタとスタックエリアの内容については，
Javaのオリジナルの機能では移動することができ

S. Terada, K. Okada, Y. Okazaki, K.. Tojo, and K..

ない。そこで，Java Platform Debugger Archi-

Oguchi：“Home gateway requirements in next gen-tecture(JPDA)を用いてスタックエリアの内容をシ－131－

リアライズ可能な変数に集めてヒープエリアに格納

特徴は，代用電荷法によって得られた計算結果をもし，シリアライズ機能により移動する方法を提案すとに，多重連結領域において適切な電荷点配置を自る。また実行再開位置を特定するプログラムカウン

動的に行えることである。

タを移動する代わりに，ソースコード変換により，プログラムの任意の位置から実行再開を可能とする

S. Kuribayashi, S. Tsumura and M.Tanabe：“Efficient

方法を提案する。この提案するソースコード変換でID

は，強マイグレーションコードを記述したオリジナ

APCC2006 1B-2, 2006.8

ルのソースコードから，ステートメントコード，ラ

邦文題目：無線タグネットワークにおける効率的ＩＤ転

ンタイムコード，ステートメント情報の３つの情報送方式の提案

transmission

methodinRFID

networks”,

ファイルを自動的に生成し，これらの変換されたコRadio Frequency IDentification (RFID) is aードを通常のJava仮想マシンで実行することによtechnology that identifies objects using radio

り，ユーザの記述した強マイグレーションコードを

frequency technology. In RFID networks, the

動作させることが可能となる。

means of transmitting and processing an identifier (ID) of each object is extremely important.
将史・This paper proposes an new method of transmit-

覚：「MPU法に基づく色情報付き陰関数曲面の生ting IDs efficiently that uses the network address

藤本大地・伊東田中拓・仲田晋・北川高嗣・岡成」電子情報通信学会論文誌, Vol. J89-D, No. 6, pp.

of the processing server as a part of the ID of an

1391–1402, 2006.6

RF tag, so allowing direct forwarding to theCG(Computer

Graphics) や CAD(Computer

processing server and thus greatly reducing the

Aided Design)では，三次元計測装置から得た離散点

processing time and processing load. It is also

群から3Dオブジェクト曲面を再構成することがしproposed to adopt a virtual network address for

ばしば要求される。この表現法として，近年，陰関

use as a part of the ID, in order to allow flexible

数曲面が注目されている。また，離散点群上の色情

adaptation to a change in the location of the

報を同時に取得できる計測装置も実用化されており，

processing server. Moreover, this paper demon-

再構成した陰関数曲面上に色情報を付加することがstrates how to implement the proposed method問題となっている。本研究では，同問題の新たな表

into a real network, assuming use of a widearea

現法として，MPU(Multi-level Partition of Unity)

Ether network.

法に基づく色関数の生成手法を提案する。本提案法
では，小領域で定義される区分的な色関数を構成し，S. Tsumura and S. Kuribayashi：“Simultaneous al-

重み関数を介してそれらを滑らかに結合することでlocation of multiple resources for computer commu-

全領域で定義される色関数を構成する。また，小領

nications networks”, APCC2006 2F-4, 2006. 8

域セル内の色情報の状態により色関数の構成法を適

邦文題目：コンピュータネットワークにおける複数種別

応的に変えることで色境界の表現も実現される。

資源同時割当て方式の提案
In computer communications networks, all

拓・櫻井鉄也：「多重連結領域数値等

services are provided using servers (computing

角写像のPadé近似を用いた電荷点配置法」日本応用数理

resource and storage resource) distributed in

学会論文誌, Vol. 16, No. 3, pp. 149–164, 2006. 9

various locations and network bandwidth which

呂

毅斌・伊東

代用電荷法を用いた数値等角写像計算において，connects the selected server and the user termi-

電荷点の配置は計算精度に影響を及ぼすが，通常そ

nal. Therefore, for each service request, it is nec-

れらは経験的に与えることが多い。本論文では，多essary to assign multiple types of resource si-

重連結領域数値等角写像計算において，Padé近似を

multaneously and effectively. This paper proposes

用いた電荷点配置法を提案する。本方法を用いるこa new method of allocating multiple types of re-とで，これまで単連結領域のみに適用されてきた

source simultaneously in a computer communi-

Padé近似を用いた電荷点配置法が，多重連結領域に

cations network. The key idea of the proposedも拡張可能であることを示す。すなわち，本方法のmethod is first to identify the resource type for－132－

which the requested amount is the largest pro-ている点で，世界的に極めてめずらしい。そこで，なぜ

portion of the maximum resource of that type,

このようなコンテンツ先進国になったか，その技術的バ

and then to select the center with the least

ックグランドはなにか，具体的に紹介。

available amount of the selected resource type.
Moreover, this paper proposes another method of

H. Murakami ： “Deployment of wired and Mobile

allocating multiple types of resource which takes

Broadbands and Their Future Prospect in Japan”,

account of the network delay time. It is demon-

IEEE GLOBECOM ACCESS’06, Nov.26, 2006, San

strated by simulation evaluations that the pro-Francisco California, USA.

posed method could reduce the amount of the re-

日本での有線系と移動体のブロードバンド化の現

source of 20% in the maximum,compared with the状について報告。特に光の進展，ここを流れるコン

existing method.

テンツの多様化，について紹介。世界一のブロードバンド大国の詳細について紹介。光ファイバの普及

伊藤・渡辺・榑松・村上・他：“携帯電話用組み込みソフ

は，世界で最も進んでおり，他国にとって非常に参トウェア開発の実践的教育における産学連携の課題”,考になる。

情報処理学会（2007年2月号）
現在，携帯電話の普及はめざましく，そのため新S. Nishiyama, H. Fukuoka, M. Ohashi, H. Mura-

機種が年に数十種類市場にでてくる。新しい機能も，

kami ： “Combining RFID Tag Reader with Mobile

常に追加されている。そのため携帯電話本体に組みPhone：An Approach to Realize Everyone’s Ubiquitous

込まれるソフトウェア（組み込みソフト，という）Appliance”, IEEE International Symposium on Intel-の開発も極めて重要であるが，現在日本ではソフト

ligent Signal Processing and Communication Systems,

ウェア開発要員の確保が，質，量とも不足している。

ISPACS’06, Tottori, Japan, Dec. 2006

そこで，携帯電話サービスを行っているKDDIとソ

ユビキタス時代の特徴の一つは，RFIDに代表さフトウェアの授業を行っている大学が共同し，具体れる各種タグが，我々の周りに数多く埋め込まれ，的な目的をもったソフトウェア教育を行った。また，

このタグからの信号を携帯電話で介して，各種サー

多様な授業法について，学生のレベルアップを評価バーに送り，社会生活に役立てることである。この基準として，授業法の比較をおこない，優れたソフ

コンテンツの１つが，context awareness であり，トウェア技術者の育成法について，知見をえた。

携帯電話が必須な端末になる。このような背景から，RFIDにアクセスし情報を読み取る携帯電話を開発

H. Murakami：“ICT Business and Related Technologies in

した。その仕様，目的，具体的な実験結果を報告しJapan -From wired BB to Mobile BB－”, IEEE ISCIR

た。

2006, Oct.2006, Bangkok, Thailand.

（以上4件

日本はICT,特に携帯電話の分野で，世界で最も進んだ村上仁己

前職ＫＤＤＩ株式会社理事における実績）

国である。とくに，多様なコンテンツを開発，商用化しエレクトロメカニクス学科
Kazuaki Arai, Masaya Inabe, Hirohito Arai, Takeshi

order to demonstrate actual operations. The

Ishigohka, et al. ： “Test of Resonance-Type Super-

short-current tests of a FCL were carried out for

conducting Fault Current Limiter”,

IEEE Trans. on

steady state 50 Hz current of up to 120 A with

Applied Superconductivity, Vol.16, No.2, pp.630-633,

relevant combinations of a superconducting re-2006.6

actor, an arrester, a capacitance and a copper re-

邦文題目：共振型超電導限流器の試験

actor of which the FCL consisted. It was shown by

The authors developed and tested a reso-theresultsofover-current

tests

that

the

nance-type superconducting fault current limiterload-current during faults was controlled within(FCL) using Bi-2223 superconducting coils in

limited much lower levels than the cases using no－133－

FCL. And, the FCL could promptly recover to

邦文題目：超電導マグネット用低電圧大電流電源を目的

steady state after the faults were cleared.

とした低温におけるMOSFETの温度特性
A low-voltage/high-current DC power source

H. Arai, M. Inaba, T. Ishigohka, et al.：“Fundamental

using multi-parallel-connected MOSFETs for an

Characteristics of Superconducting Fault Current

excitation power source of superconducting mag-

Limiter Using LC Resonance Circuit”, IEEE Transac-

nets is proposed. The power source can operate attions on Applied Superconductivity, Vol.16, No.2,

77 K in liquid nitrogen bath. The fundamental

pp.642-645, 2006. 6

idea and some preliminary experimental results

邦文題目：LC共振回路を用いた超電導限流器の基本特性

are presented. The preliminary experiment using

The authors proposed a new type of fault cur-

100 MOSFETs connected in parallel are carried

rent limiter (FCL) utilizing series LC resonanceout. The forward-direction voltage drop both atcircuit composed of a superconducting coil and aroom temperature and 77 K has been measured.

capacitor. The superconducting coil is wound by

The experimental results show good prospect for

Bi-2223/Ag HTS tape conductor. The new FCL

this type of DC power source in order to excite

can suppress the rapid increase of a fault current

superconducting magnets.

by its energy storing capacity. Both theoreticalanalysis and experiments are carried out. It is

N. Yanagi, K. Seo, S. Imagawa, H. Sekiguchi, K. Ta-

shown by the experimental result that the cur-kahata, S. Yamada, T. Mito, T. Ishigohka, A. Nino-

rent limiting ability of this FCL. The obtained

miya：“Pulse height analysis on the balance voltage

experimental result agrees well with the theo-and acoustic emission signals for the LHD supercon-

retical one.

ducting coils”, Fusion Engineering and Design, Volume 81, Issues 20-22, pp.2559-2565, 2006.11

Takeshi Ishigohka, Kenji Uno, and Sakio Nishimiya：

邦文題目：LHD超電導コイルのバランス電圧およびAE“Experimental Study on Effect of In-Rush Current of

信号のパルス高解析

Superconducting Transformer”, IEEE Transactions on

The authors have observed in the supercon-

Applied Superconductivity, Vol.16, No.2, pp.1473-1476,

ducting helical coils of the Large Helical Device

2006.6(LHD) that the balance voltage signals measured

邦文題目：超電導変圧器の励磁突入電流に関する実験的between the corresponding pairs of the coil blocks

研究contain a number of spike signals during ramp-up
The problem of the in-rush current of a super-

and ramp-down processes of excitation. The spike

conducting transformer using a small experi-signals might be generated by rapid changes ofmental model system with a Bi-2223 HTS wind-

the self-inductances of the coil windings due toing was studied experimentally. The in-rush cur-mechanical disturbances (conductor

rent with a ceiling current of more than 10 pu wascaused by large electromagnetic forces. Pulse

applied. The experimental result shows the re-height analysis (PHA) has been successfully ap-

motions)

maining of a finite resistive voltage even for aplied to analyze these signals in order to clarify

primary current smaller than its DC criticalthe mechanical properties of the coil windings. In

value after the decaying of the initial in-rush overaddition, four acoustic emission (AE) sensors at-current.

tached to the helical coil cans are also used todetect mechanical disturbances, and PHA is applied also to analyze these signals.

Ryo Kawanami and Takeshi Ishigohka：“Low Temperature

Characteristicsof

MOSFET

Targeting

Low-Voltage High-Current Power Source for Super-

T. Ishigohka, T. Mito, S. Imagawa, N. Yanagi, H. Se-

conducting Magnets”, IEEE Trans. on Applied Su-

kiguchi and S. Yamada：“Protection of LHD coils by

perconductivity, Vol.16, No.2, pp.1630-1633, 2006.6

intelligent observation of voltage signals”, Fusion－134－

Engineering and Design, Volume 81, Issues 20-22,of the position and direction of the TGI should

pp.2567-2570, 2006.11

be installed on the sidewalk quite near the

邦文題目：電圧信号の高度観察によるLHDコイルの保護

TGI.

As well known, the LHD is a typical large scale

5) An ATS speaker should be positioned above

superconducting coil system with very large

the tactile forewarning sign to help users lo-magnetic stored energy. Therefore, its protection

cate the sign more easily.

at any operational condition is very important. In

The bureaucratic nature of administrative sys-order to protect the large superconducting coils, atem of the Japanese government is such that it

careful observation of voltage signal is essential.

has the potential to hinder the implementation of

However, in general, the observed voltage signals

travel aids for vision impaired pedestrians. Travel

have considerably large electromagnetic noises.

aids for vision impaired pedestrians are admin-

Therefore, the authors cancelled the noise volt-

istrated by different authorities; Braille tiles areages by subtraction of a voltage of an adjacent coiladministrated by the municipal roads authority,from that of the target coil. Besides, the authors

ATS devices are controlled by the police and TGIs

propose an intelligent data processing methodby the police or the municipal roads authority.

using both integration and differentiation tech-

Since all of these aids are used by vision impairednique of the voltage signal. These techniques arepedestrians, guidelines for the installation of

applied for the LHD data. The obtained result

these devices should be discussed in an open fo-

well explains the normal-zone expansion phe-rum with representatives from all relevant ad-

nomenon at LHD obtained in Oct. 1998.

ministrative sections.

大倉元宏・中川幸士・田内雅規：「視覚障害者用道路横断

小方博之・河合岳・山本紗恵子：「人間の動作データを帯の敷設ガイドラインの提案」日本交通科学協議会誌，

用いたスキルの自動評価」日本テスト学会誌, Vol. 3, No.

Vol.6，No.2，pp.12-19, 2006（2007.3発行）

1, pp. 49-58, 2007.3

It is very difficult for vision impaired persons to

本論文では，もの作りやスポーツのように連続的

cross an intersection independently. In an

な動作を伴う実技課題において，受験者のスキルを

attempt to reduce the difficulty associated

自動評価する方法について検討する。具体的には，

therewith, a tactile guiding indicator (TGI) paved

モーションキャプチャ装置で取得した受験者の動作

on pedestrian crosswalk has been developed. In

データを用いて評価を行う。一般に，受験者の動作

the article we reviewed our studies on the usabil-はスキルレベルが同一でも同じにはならず，体の大ity of TGIs, and propose the following installation

きさや筋力，肉付きなどによって差が出る。同一受

guidelines:

験者が複数回実技を行った場合の動作にも差が生じ

1) The TGIs should be combined with Braille

る。また，受験者が同じ姿勢をとる時点もデータに

tiles (dot- and strip-patterned tiles) on side-

よって異なる。このような特徴を有する動作データ

walks and audible traffic signals (ATS) em-

を扱うために，本研究では時点を一意に特定できる

ployed as standard features at intersections

いくつかの姿勢をデータから抽出して多変量データ

for vision impaired pedestrians.

としたものを利用し，そこから分類問題に帰着させ

2) The TGI must be placed such that it forms a

ることでスキルレベルを推定した。ゴルフのパター

contiguous line with strip-patterned tactile

スイングを例題として本手法の有効性を確認した。

tiles on opposite sides of the street to form a

あらかじめスキルレベルの判っている30名の受験

continuous traveling path.

者から556データを取得し，leave-one-out法でスキ

3) The width of the TGIs should exceed 40cm to

ルの評価を行ったところ，実際のスキルに近い値がdecrease the possibility of the user stepping off

得られ，本手法の有効性を確認できた。

the path they form.
4) A tactile forewarning sign for informing users

Yuki Saito, Akinori Ezawa, Yusuke Fukumoto, Hiro-－135－

yuki Ogata, Akira Torige：“Analyzing and Evaluating

効性を確認した。

Robot Motion Algorithm for Sweeping Task”, Mecha-（村松大吾

tronics for Safety, Security and Dependability in a績）

前職早稲田大学理工学術院助手における実New Era, Elsevier, pp. 93-96, 2006. 9
悟，山川正樹，中村芳知，野本弘平，城戸恵美子 :邦文題目：掃引作業におけるロボット動作アルゴリズム

窪田の分析と評価「子供のテレビ視聴距離」，映像情報メディア学会誌，

Recently, sweeping robots, such as cleaning

61巻，2号，pp. 234-236，2007. 2

robots for home use, have been actively developed.

本調査では，Webアンケートにより，大人と比較

Most of these robots generate their motion by re-

して，子供が相対的にどのくらいの視距離でテレビ

active algorithm with easy sensors mounted.

を観視しているかについて保護者からの観察結果をHowever, with these algorithms, the sweeping得た。その結果，低年齢になるほどテレビの視聴距

task would be done uneven to the sweepable ar-

離は近くなり，成人の平均視聴距離が約250cmであeas. So there are still rooms for developing a more

るのに対して，3歳以下の子供のテレビ視聴距離のefficient algorithm. To develop an effective algo-

平均は約170cmであった。これらの結果から，子供

rithm, evaluation method is in need. However, theの視聴実態に配慮した映像表示条件の必要性を示し

methodology to evaluate the efficiency of state

た。

informed algorithm has not yet been established.
Cleaning robots do not always clean the same

Kubota, S., Okada, S., Sakai, E., and Fujioka, T：

environment, so the difficulty of this research is“Measurement of light incident on mobile displays inthat consideration of various kinds of environ-various environments”, Journal of the Society for In-

ments is in need. We developed sweeping robot

formation Display,Vol.14, No.11, pp.999-1002，2006.11

simulator to analyze the existing sweeping algo-

Using a single lens digital camera with a 180°

rithms, and reveal their inefficient features tofisheye lens attached, we measured the incident

improve the existing algorithms. The algorithms

light at the surface of a mobile display in 112 dif-that commercial robot cleaners install were ana-

ferent environments, including outdoor and in-lyzed and those efficiencies were estimated.

door environments, and inside a car. The data
were analyzed the some typical environments in

隆：「ユーザ共通Fusionモ

which mobile displays are used. The results of

デルを用いたオンライン署名認証」電子情報通信学会論

this research can be used to design the reflectivity

文誌 D, Vol. J90-D No.2, pp.450-459, 2007. 2of reflective and transflective LCDs, which make

村松大吾・本郷保範・松本

maximum use of outside light.

署名は古くから個人認証を行う手法として利用されてきたこともあり，今後も個人認証の有力な一手法であると考えられる。本論文はオンライン署名を

窪田

悟，嶋田

淳，岡田

想，中村芳知，城戸恵美子：

用いた認証手法に着目し，そのアルゴリズムの提案「家庭におけるテレビの観視条件」，映像情報メディア学を行うものである。本論文ではオンライン署名から

会誌，60巻，4号，pp.597-603，2006. 4取得できる複数特徴量から複数の距離を計算し，こA field survey and a web questionnaire survey

れらを組合せ（Fusion）することでオンライン署名

were conducted for obtaining data about televi-

認証の精度を向上させる手法を提案する。複数の距

sion viewing conditions at home. In the field sur-離を組み合わせる手法としてユーザに依存しないユ

vey, measurements were made concerning the il-

ーザ共通のFusionモデルを構築し，モデルからの出

luminance and luminance of television screens

力 に よ り 判 別 を 行 う 。 本 論 文 で は モ デ ル 学習に

and television viewing distances and angles for

AdaBoostアルゴリズムを用いた。またオンライン署

275 viewing locations at 50 homes. In the web

名認証での経時変化への対応手法としてリファレン

questionnaire survey, 290 families were asked

ス更新法も提案する。提案手法はオンライン署名のabout room size, present television screen size,

公開データベースを用いて精度評価実験を行い，有desired television screen size, and viewing condi-－136－

tions. The results showed that the mean screenlows the rtificial vectors designed in the work-

illuminance was 108 lx, and the mean luminancespace. Moreover, the prediction simulation isratio of black and white was 72. The mean view-

performed on-line. The simulator judges the sta-ing distance was 266 cm, and the viewing-angle

bility under comparison with the present state

range was ±60 degrees from the horizontal, ±30

and the prediction results, and then the gait pa-

degrees from the vertical. Correlation analysis of

rameters are adaptively improved in feedforward

screen sizes revealed that the best predictor offor the stable walk. The numerical and physicaldesired television screen size was the present

experimental results show the validity of the

television screen size.

proposed method in the continuous walk.

N. Kawada, M. Ito and Y. Saito：“Thermal Stability of

市川麻理子・元木Lanthanum Oxynitride Ultrathin Films Deposited on

システムによる３次元物体認識のための窺覗動作制御

Silicon Substrates”, Jpn. J. Applied Physics vol. 45,法」, 電気学会論文誌Ｄ, Vol. 126, No. 6, pp. 726 - 731,

No.12, pp. 9197-9199, 2006.12

2006

邦文題目：シリコン基板上に堆積したランタン酸窒化膜

聡・柴田昌明：「ハンドアイビジョン

This paper proposes a visual servo control
method for exploring motion of eye-in-hand robotの熱安定性
We prepared lanthanum oxynitride films on

to recognize a three-dimensional object. The CCD

p-type Si(100) substrates by electron beamcamera attached at the manipulator tip captures

evaporation. The films were deposited by evapo-

the images of the target object, and then the robot

rating lanthanum at a substrate temperature ofvaries its own posture with referring the position

300 ℃ , and introducing oxygen and nitrogentransitions in the images of the feature points onradicals into a chamber. After the thermal an-

the object. Our approach for optimal motion isnealing of the films at 600℃ for 30 min, thebased on the strategy in which the position esti-

composition and depth profile of the films weremation precision of the feature points in the cap-

investigated by X-ray photoelectron spectroscopy

tured images gets improved when the feature(XPS) and Auger electron spectroscopy (AES),

points move widely, and the optimal robot motion

respectively. We found that lanthanum oxynitride

provides the widest transitions of the featurefilms suppress Si diffusion from the substrate as

points per unit robot motion, so that the robot

compared with lanthanum oxide films.

should be controlled to purse such motion. In the
proposed method, the primary feature point is

崇・柴田昌明：「予測シミュレーションを備えたベ

made located at the center of the image, while the

クトル場による二足歩行ロボットの歩行動作計画」, 電other points are moved for achieving the optimal

気学会論文誌Ｄ, Vol. 126, No. 6, pp.713-718, 2006.

transition in the image. In addition, this paper

山口This paper proposes a way of gait trajectory

describes the way to reduce calculation effort for

generation with artificial vector field for stable

the proposed method. The numerical and physicalwalking of a biped robot. The tip of the robot on

experiments have been executed with use ofwalking can often deviate from the desired tra-3-DOF planar manipulator. The validity of ourjectory by the disturbances forced by unexpected

approach is confirmed in the several experimen-

outside factors. In our approach, though no pre-tal results.

pared trajectory is specified a priori, the tip fol-

－137－

共

通

基

礎

K. Tanaka, K. Sano, T. Katoh, S. Iwata, K. Nemoto,I. Wakabayashi：“Cubic Thue equations with auto-

and T. Kurushima：“Proton- and metal cation- en-morphisms”,

hanced excited state intramolecular proton transfers

lated fields 2006, Seminar on Math. Sciences No. 35,

of 2-(2-hydroxyfluorophenyl)benzoxazole having imi-

Keio Univ., pp.193-202, 2006. 8

dazole moiety”, J. Fluorine Chem., Vol. 127, No 8, pp.

邦文題目：自己同型をもつ３次トゥーエ方程式

Diophantine Approximation and Re-

We report the following results, and give an1073-1078, 2006. 8

Let F(X,Y) be an irreducible

邦文題目：イミダゾ－ル部位を持つ2-(2-ヒドロキシフル

outline of the proof.

オロフェニル)ベンゾオキサゾ－ルのプロトンおよび金

cubic form with integer coefficients and positive

属カチオンにより増大する励起分子内プロトン転位

discriminant, and we suppose F has non-trivial

Protonation at the 3-imidazole nitrogen atom of

automorphisms. We show that the Thue equa-2-(2-hydroxyfluorophenyl)benzoxazole having antion F(x,y)=1 has at most three integer solutions

imidazole moiety (1) enhances the green emission

except for a few known cases.

around 500 nm, where the positive characteruse

caused by the protonation is inductively commu-

F a , b ( X, Y )= bX3- aX 2 Y -( a+3b) XY 2 - bY3 ,nicated to the hydroxy group, to recover its in-equivalent to F.

tramolecular hydrogen bonding, leading to thethe size of solutions, we use the Pade approxima-

ESIPT process.

tion method developed in our former work.

Addition of Al3+ or Zn2+ to 1 en-anexplicitly

For the proof, we

expressed

cubic

form

which

is

To obtain an upper bound forTohances both the green emission and the blue

obtain a lower bound for the size of solutions, weemission around 450 nm in chloroform- acetoni-

use a result of R. Okazaki on gaps between solu-

trile.

tions, which is obtained by a geometric consideration.

I. Wakabayashi：“Number of solutions for cubic Thue

We also solve the Thue inequality|Fa , b (x,y)|≦2a+3b when a is sufficiently large

equations with automorphisms”, Ramanujan J. Vol.14,

compared with b.

pp.131-154, 2007. 3

tinued fraction with fractional partial quotients,

邦文題目：自己同型をもつ３次トゥーエ方程式の解の個

and a generalized Legendre theorem.

数
Let F(X,Y) be an irreducible cubic form withinteger coefficients and positive discriminant.
We suppose that F has non-trivial automorphisms.
We show that the Thue equation F(x,y)=1 has at
most three integer solutions except for a few
known cases. For the proof, we solve an explicitly
expressed cubic Thue equationbx 3 - ax 2 y -( a +3 b ) xy 2 - by 3 =1
which is equivalent to F. To obtain an upperbound for the size of solutions, we use the Padeapproximation method. To obtain a lower boundfor the size of solutions, we use a result of R.
Okazaki on gaps between solutions, which is obtained by geometric consideration.

－138－

For the proof we use a con-