tom tat cac bao cao khoa hoc

1

MC LC - CONTENT

Thng tin chung

Th cho mng - Welcome address 4

Ban t chc v Ban th k - Organizing Committee and Secretaries 9

Ban t chc - Ban bin tp cc tiu ban - Session Organizing Committee 10

Tm tt Bo co ti Tiu ban Abstracts of Parallel Sessions

I. Tiu ban Ton - Tin hc Mathematics - Computer Science Session

Bo co ni Oral presentations 13

Phn ban Gii tch v ti u I Analysis and Optimization I 21

Phn ban Gii tch v ti u II Analysis and Optimization II 36

Phn ban i s v ng dng Algebra and Applied Maths 46

Phn ban C hc Mechanics 56

Bo co treo Posters 70

II. Tiu ban Vt l K thut - Hi dng hc Engineering Physics - Oceanology Session


Phn ban Vt l K thut Engineering Physics 78

Phn ban Hi dng hc-Vt l a cu Oceanology-Geophysics 98


Phn ban Vt l K thut Engineering Physics 126

Phn ban Hi dng hc-Vt l a cu Oceanology-Geophysics 199

III. Tiu ban Ha hc Chemistry Session


Phn ban Ha v c v ha hc phn tch

Inorganic Chemistry and Analytical Chemistry 206

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Phn ban Ha hu c v Ha hc polymer

Organic Chemistry and Polymer Chemistry 212

Phn ban Ha l Physical Chemistry 217


Phn ban Ha l Physical Chemistry 232

Phn ban Ha hc Polymer Polymer Chemistry 249

Phn ban Ha phn tch Analysical Chemistry 258

Phn ban Ha v c Inorganic Chemistry 279

Phn ban Ha hu c - Organic Chemistry 282

IV. Tiu ban Sinh hc - Cng ngh Sinh hc Biology - Biotechnology Session

Bo co ni Oral presentations 311 311

Phn ban Sinh hc v CNSH thc vt - Plant Biology and Biotechnology 319

Phn ban CNSH ng vt v T bo gc - Animal Biotechnology and Stem Cell 330

Phn ban Sinh ha v Vi sinh - Biopchemistry and Microbiology 340

Phn ban Sinh thi v a dng sinh hc - Ecology and Biodiversity 352

Phn ban Cng ngh gen - Gene Technolgy 359


Phn ban Sinh hc v CNSH thc vt - Plant Biology and Biotechnology 374

Phn ban Sinh ha v Vi sinh - Biochemistry and Microbiology 385

Phn ban Sinh thi v a dng sinh hc - Ecology and Biodiversity 386

Phn ban Cng ngh gen - Gene Technolgy 404

V. Tiu ban a cht Geology Session



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VI. Tiu ban Mi trng Environment Session


Phn ban Khoa hc Mi trng v Tin hc Mi trng

Environmental Sciences and Environmental Informatics 450

Phn ban Qun l Mi trng v Cng ngh Mi trng

Environmental Management and Environmental Technology 464


Phn ban Khoa hc Mi trng v Tin hc Mi trng

Environmental Sciences and Environmental Informatics 486

Phn ban Qun l Mi trng v Cng ngh Mi trng

Environmental Management and Environmental Technology 514

VII. Tiu ban Cng ngh Thng tin Information Technology Session


VIII. Tiu ban in t - in t vin thng Electronics - Telecommunications Session



IX. Tiu ban Khoa hc Vt liu Materials Science Session



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TH CHO MNG

Knh tha Qu v i biu, cc nh khoa hc, cc ng nghip,

Thay mt cho Hiu trng Trng i hc Khoa hc T nhin (HKHTN) thuc i

hc Quc gia Tp. HCM (HQG-HCM) v Ban t chc Hi ngh, ti rt hn hnh c nhit

lit cho mng tt c Qu v n vi Hi ngh Khoa hc ln VIII ca Trng HKHTN,

c t chc vo ngy 09 thng 11 nm 2012 ti C s 227 Nguyn Vn C, Qun 5, Tp.

HCM ca nh trng.

Knh tha Qu v,

Nghin cu khoa hc l hot ng khng th thiu i vi mt c s gio dc i hc

cht lng cao. Trong qu trnh 70 nm hnh thnh v pht trin, Trng HKHTN lun coi

trng vai tr ca nghin cu khoa hc trong nhim v o to ca trng. S n lc khng

mt mi ca i ng cn b ging dy, sinh vin, hc vin sau i hc ca nh trng cng

vi s hp tc hiu qu vi cc ng nghip, nh khoa hc ca cc c s o to, nghin cu

trong v ngoi nc v ang lm cho hot ng nghin cu khoa hc ca trng lun si

ng, to ra nhiu kt qu khoa hc tt, gp phn hnh thnh cho nh trng thng hiu l

mt trung tm o to v nghin cu khoa hc c bn trnh cao ca Vit Nam.

T Hi ngh Khoa hc ln VII nm 2010 n nay, trong hai nm hc 2010-2011 v

2011- 2012 va qua Trng trin khai thc hin K hoch chin lc pht trin giai on

2011-2015 ca trng v ca HQG-HCM v khoa hc v cng ngh (KH&CN) nhm tip

tc gi vng v tr hng u ca nh trng trong c nc nc v khoa hc c bn, v mt

s khoa hc cng ngh mi nhn. Cc tp th cn b nghin cu v ging dy ca nh Trng

ch tr thc hin trn 230 ti cc cp vi tng kinh ph nghin cu khoa hc hn 25 t

ng, bao gm 6 ti KH&CN cp nh nc, 1 ti hp tc quc t theo ngh nh th, 29

ti nghin cu c bn (Nafosted), 28 ti cp HQG trng im v nhiu ti cp

HQG, cp tnh, thnh ph, ti theo n t hng ca cc cng ty trong ngoi nc, ti

cp c s... Nhiu ti c nghim thu v c kt qu nghin cu tt. Trong hai nm hc

va qua, cn b ging dy, nghin cu ca trng cng b hn 126 bi bo trn cc tp ch

khoa hc chuyn ngnh ngoi nc, 150 bi bo trn cc tp ch khoa hc chuyn ngnh trong

nc, trn 200 bo co ton vn trong k yu ca cc hi ngh khoa hc quc t v hi ngh

khoa hc ton quc. Doanh s hot ng o to v chuyn giao cng ngh ca Trng

HKHTN trong hai nm qua l trn 20 t ng. Trng k vn bn hp tc nghin cu

khoa hc v chuyn giao cng ngh cc i tc trong v ngoi nc nh Khu Nng nghip

cng ngh cao Tp. HCM , Cng ty IBM Vit Nam, Cng ty Red Sun, Cng ty HPT, Cng Ty

PINNACO, Cng ty C phn SX TM v DV Thng tin V tr, Trung tm Nghin cu Bo

tn Chim (Nga), Hc Vin Cng ngh Toyota (Nht Bn)...

c bit, hp tc quc t ng vai tr quan trng trong cc hot ng KH&CN ca

Trng H KHTN. Trong hai nm hc qua, Trng ch tr v tham gia t chc trn 30 hi

ngh khoa hc, seminar quc t tip v lm vic vi 9 on khch quc t t cc trng

i hc, vin nghin cu, cng ty tip nhn hn 30 lt gio s, cn b nghin cu khoa hc,

5

sinh vin n lm vic, ging dy, hc tp ti trng, k kt tha thun khung, bn ghi nh

hp tc trao i sinh vin, ging vin, nng cao cht lng o to, lin kt o to, nghin

cu khoa hc vi 1 trng, vin c uy tn trn th gii.

Knh tha Qu v,

T trn mi nm nay, nh k hai nm mt ln, Trng HKHTN t chc hi ngh

khoa hc ton trng cho tt c cc ngnh khoa hc, cc lnh vc nghin cu, o to ca

trng. Mc tiu ca cc hi ngh khoa hc ton trng ny l to din n cc tc gi, tp

th tc gi ca trng v ca cc n v c quan h hp tc trnh by kt nghin cu khoa hc

theo ngnh v lnh vc ca mnh. Mt khc, Hi ngh cng nhm to c hi cho vic giao lu,

trao i tm tng, gii php tin hnh nghin cu cc vn cn n s hp tc ca

nhiu ngnh khoa hc, nhiu lnh vc vn c trong trng kch thch s hp tc, hnh thnh

cc nghin cu lin ngnh, lin lnh vc trong v ngoi trng ng thi to c hi tham gia

cc hi ngh khoa hc v kch thch tinh thn say m nghin cu khoa hc ca sinh vin trong

trng.

Ban t chc Hi ngh Khoa hc ln VIII nm 2012 rt vui mng nhn c s ng

k tham d ca trn 550 bo co t 0 c s o to, nghin cu, chuyn giao trong v ngoi

nc lin quan nhiu ngnh khoa hc t nhin v cng ngh khc nhau nh ton - tin hc, vt

l, ha hc, sinh hc, a cht hc, khoa hc mi trng, khoa hc vt liu, hi dng hc,

cng ngh thng tin, cng ngh sinh hc, cng ngh mi trng, in t - vin thng. Thng

qua s nh gi ban u v xut ca cc tiu ban, Ban t chc chn 529 bo co tham

gia hi ngh vi 2 bo co ti phin ton th, 230 bo co ni ti 9 tiu ban v 297 bo co

treo. Trong s ny, Hi ngh vui mng n cho s tham d ca 8 khch quc t t 3 trng

i hc ti Php, B v Nht Bn vi 2 bo co c trnh by ti Phin ton th v 8 bo co

trnh by ti cc Tiu ban. Danh sch cc bo co cng cc tc gi, tp th tc gi, cc n v

tham gia bo co ti hi ngh c trnh by trong quyn Chng trnh Hi ngh Khoa hc

ln VIII ny. Cc tm tt bo co tham gia hi ngh trnh by di dng file pdf c cung

cp trong a CD i km theo ti liu ny. T kt qu ca Hi ngh, cc bo co xut sc s

c chn lc, phn bin c lp cng b thnh cc bi bo khoa hc trong Tp ch Pht

trin Khoa hc v Cng ngh, HQG-HCM theo qui nh ca tp ch. Ngoi ra, Ban T chc

cng s nh gi v trao thng cho cc bo co treo xut sc.

Ban t chc hy vng Hi ngh Khoa hc ln VIII ca Trng HKHTN s mang li

cho tt c Qu i biu, cc nh khoa hc, cc ng nghip, tt c sinh vin, hc vin sau i

hc nhng tng, thng tin, gii php khoa hc mi, hu ch, cng nh hnh thnh c cc

mi quan h, hp tc mi trong nghin cu v o to.

Ban t chc xin chn thnh cm n s nhit tnh ng h v tham gia bo co ca tt c

cc tc gi, tp th tc gi cng cc c quan ch qun, c bit l ca cc tc gi t nc

ngoi, to iu kin Hi ngh c c ni dung khoa hc phong ph v gp phn quyt

nh trong vic t c mc tiu khoa hc ca Hi ngh xin trn trng cm n s hu thun

v ch trng, ni dung v ti chnh ca HQG-HCM v Trng HKHTN to iu kin

cho Hi ngh c t chc thun li xin nhit lit cm n cc n v ti tr ng gp mt

phn kinh ph quan trng cho vic t chc Hi ngh xin ghi nhn v chn thnh cm n s

6

nhit tnh nhn li mi tham gia ch tr, iu khin chng trnh ca cc phin bo co ca

cc nh khoa hc u n, s tch cc v n lc cao ca cc thnh vin Ban t chc ton

trng, Ban t chc - bin tp ca cc tiu ban, cc cc c nhn, tp th thuc Trng

HKHTN trong qu trnh chun b cho Hi ngh Khoa hc ln VIII ny.

Knh chc tt c Qu v sc khe, hnh phc v thnh cng.

GS.TS. Trn Linh Thc

Ph Hiu trng Trng HKHTN

Trng Ban t chc

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WELCOME ADDRESS

Dear Participants, Scientists, Colleagues,

On behaft of the President of The University of Science (HCMUS), Vietnam National

University - Ho Chi Minh City (VNU-HCMC) and the Organizing Committee, I have the

great honor to warmly welcome all of you to the HCMUS 8th

Scientific Conference, to be

held on the 9th

November 2012 at our Campus at 227 Nguyen Van Cu, district 5, Ho Chi

Minh city.

Carrying out scientific research is an essential activity of a highly qualified higher

education institution. During 70 years of foundation and growth of HCMUS, scientific

research has always been having an important role in the education mission of our university.

The efforts of our faculty, students together with their efficient collaborations with colleagues,

scientists of different education and/or research institutions in the country and abroad have

been always making our research activities effervescent, have produced excellent scientific

results, contributed to our established reputation as one leading center for basic scientific

education and research in Vietnam.

From the 7th

Sientific Conference on 2010 up to now, during the two recent academic

years, HCMUS has been carrying out HCMUSs and VNU-HCMs 2010-2015 strategic plan

of development in science and technology (S&T) in order to assure the leading position of

the university in Vietnam in basic science and advanced S&Ts. Research groups of the

university have successfully received 230 research grants with a total amount of more than

25 billions VND including 06 core national grants in S&T, 1 international bilateral grant, 29

grants from Vietnam National Foundation for Science and Technology Development

(Nafosted), 28 core ministeral grants and others. Many excellent results have been achieved

and published: 126 international and 150 national publications, more than 200 full papers in

proceedings of national and international scientific conferences. Total value of technology

training and tranfer activities was more than 20 billions VND. HCMUS has signed

agreement on research and technology transfer with different domestic and international

partners such as Ho Chi Minh City Hitech Agriculture Park, IBM Vit Nam, Red Sun, HPT,

PINNACO, Research Center for Bird Conservation (Russia), Toyota Technological Institute

(Japan)...

International collaboration has a particularly important role in research at our

university. During the two academic years, HCMUS has organized or co-organized more than

30 international workshops, symposiums, conferences. The university has hosted 94

international delegations, 30 visiting professors, international research fellows, students and

signed MOU for collaboration with 14 excellent universities, research institutes from different

countries.

Dear Participants, Scientists, Colleagues,

Since more than a decade, HCMUS has been organizing biannual scientific

conferences which covered all disciplines and fields of education and research at the

university. The objective of these scientific conferences is to provide the platform for authors

from our university and from collaborating institutions to present their research results in their

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field of interests. On the other hand, the conference also aims to provide opportunity for

discussion, exchange of ideas and solutions to study integrated issues, which require the

engagement of different scientific fields, areas existing in the university, to stimulate the

collaboration and formation of interdisciplinary researches among research teams within the

university or with other institutions. The conference is also to provide opportunity for our

students to participate in scientific conference and to stimulate their passion for science and

doing science.

The Organizing committee of this 8th Scientific Conference has the great pleasure to

receive over 550 abstracts and full papers from 40 different institutions for education,

research and technology transfer in Vietnam and from abroad relating to many different

scientific and technological disciplines such as mathematics, computer science, physics,

chemistry, biology, geology, environmental science, materials science, oceanology,

information technology, biotechnology, environmental technology, electronics,

telecommunications. Through a preliminary evaluation and by suggestion of our scientific

sessions, we have selected 529 submitted papers to be present at the conference including 2

plenary presentations, 230 oral presentations at 9 parallel sessions and 297 poster

presentations. Among these, we are very pleased to welcome 8 international partitcipants from

3 distinguished universities from France, Belgium and Japan contributing 2 plenary and 8

session presentations. List of presentations with authors, institutions is included in this

Program Book. Abstracts of all presentations are edited into pdf files, which are attached as a

CD. From the conference result, excellent presentations will be selected for peer reviewing to

be published as scientific papres in the Journal of Science and Technology Development of

VNU-HCMC following the journal regulation. In addition, The Organizing committee also

evaluates and confers awards for excellent poster presentations.

We do hope the conference will provide all of you new and useful scientific ideas,

information, solutions, as well as to help you to successfully establish new relationships and

collaborations in education and research.

We would like express our sincere gratitude to all authors and their affiliated

institutions, particularly to our oversea participants, for their warmly supports and

participations, which have essentially contributed to the richness in scientific content of the

conference as well as to successfully achieve its scientific objectives.

Next, it is our honor to extend our acknowledgements of VNU-HCMC and HCMUS

for their support. We would also warmly thank all the sponsors who have contributed an

important part to cover the expenses of the conference. Our high appreciations and sincere

thanks are warmly extended to all leading scientists who chair the conference sessions, to

members of the conference and session organizing committees, to the university staff and

offices for their energetic efforts in the preparation of the conference.

I wish all of you good health, happiness and success.

Prof. Dr. Tran Linh Thuoc

Vice President

Chair of Organizing Committee

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BAN T CHC ORGANIZING COMMITTEE

Stt H v tn n v Chc v

1 GS.TS. Trn Linh Thc Ph Hiu trng Trng BTC

2 TS. Hong Ngc Cng P. KHCN-QHQT y vin

3 TS. Lm Quang Vinh P. KHCN-QHQT y vin

4 TS. Trnh Anh Ngc Khoa Ton Tin y vin

5 TS. L V Tun Hng Khoa Vt l VLKT y vin

6 PGS.TS. Trn L Quan Khoa Ha hc y vin

7 TS. ng Th Phng Tho Khoa Sinh hc y vin

8 ThS. Trn Ph Hng Khoa a cht y vin

9 TS. T Th Hin Khoa Mi trng y vin

10 PGS.TS. Nguyn nh Thc Khoa CNTT y vin

11 TS. Bi Trng T Khoa in t - VT y vin

12 PGS.TS. L Vn Hiu Khoa KH Vt liu y vin

BAN TH K - SECRETARIES

Stt H v tn n v Chc v

1 TS. Lm Quang Vinh P. KHCN-QHQT Trng Ban

2 Tn N Minh Tm P. KHCN-QHQT y vin

3 V Th Mai Thun P. KHCN-QHQT y vin

4 H Ngc Trang Anh P. KHCN-QHQT y vin

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BAN T CHC - BIN TP CC TIU BAN

SESSION ORGANIZING COMMITTEES

STT Tn Tiu ban Ban t chc bin tp Chc v

1 Ton - Tin hc TS. Nguyn Thnh Long Trng TB

TS. Phm Th Bo Ph TB

PGS.TS. Bi Xun Hi y vin

TS. Trnh Anh Ngc y vin

ThS. Nguyn Thanh Chuyn Th k

2 Vt l k thut Hi dng hc

PGS.TS. Chu Vn To Trng TB

TS. L V Tun Hng Ph TB

PGS.TS. ng Vn Lit y vin

PGS.TS. Nguyn Thnh Vn y vin

TS. Trn Quang Trung y vin

PGS.TS. Nguyn Vn Hiu y vin

TS. V Lng Hng Phc y vin

TS. Hunh Vn Tun Th k

CN. Nguyn Hong Phong Th k

3 Ha hc PGS.TS. Trn L Quan Trng TB

TS. Nguyn Th Thanh Mai Ph TB

PGS.TS. Nguyn Th Phng Thoa y vin

PGS. TS. Hunh Th Kiu Xun y vin

TS. Nguyn Trung Nhn y vin

TS. Trn Vn Mn Th k

4 Sinh hc - Cng ngh sinh hc

TS. Nguyn Du Sanh Trng TB

TS. ng Th Phng Tho Ph TB

PGS.TS. Bi Vn L y vin

TS. Ng i Nghip y vin

TS. Nguyn Phi Ng y vin

TS. Quch Ng Dim Phng y vin

ThS. Ng Th Kim Hng Th k

5 a cht ThS. Trn Ph Hng Trng TB

11

ThS. Nguyn Kim Hong Ph TB

ThS. Nguyn Pht Minh y vin

TS. Bi Th Lun y vin

ThS. Nguyn Kim Chi Th k

6 Mi trng PGS.TS. H Quang Hi Trng TB

TS. T Th Hin Ph TB

PGS.TS. Trng Thanh Cnh y vin

ThS. Dng Th Thy Nga y vin

TS. V Vn Ngh y vin

ThS. Hong Th Phng Chi Th k

7 Cng ngh thng tin PGS.TS. Trn an Th Trng TB

PGS.TS. Nguyn nh Thc Ph TB

PGS.TS. ng Th Bch Thy y vin

PGS.TS. L Hoi Bc y vin

TS. inh B Tin y vin

CN. Trn Thanh Hi Th k

8 in t - in t vin thng TS. Hunh Hu Thun Trng TB

TS. Bi Trng T Ph TB

PGS.TS. inh S Hin y vin

PGS.TS. Nguyn Hu Phng y vin

TS. L Hu Phc y vin

ThS. ng L Khoa Th k

9 Khoa hc Vt liu PGS.TS. L Vn Hiu Trng TB

TS. H Thc Ch Nhn Ph TB

TS. inh Sn Thch y vin

TS. Phan Bch Thng y vin

TS. L Minh Hng y vin

TS. Hong Th ng Qu y vin

ThS. Phm Kim Ngc Th k

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TM TT BO CO TI TIU BAN

ABSTRACTS OF PARALLEL SESSIONS

13

I. Tiu ban TON TIN HC MATHEMATICS AND COMPUTER SCIENCE

DANH SCH BO CO NI

Phn ban 1: GII TCH V TI U I - ANALYSIS AND OPTIMIZATION I a im: F 206 Ch tr: TS. L Th Phng Ngc

S TT Thi gian

Tn bo co Bo co vin/

ng tc gi Email/n v

I-O-1.1 10:00-

10:15

S TN TI NGHIM N NH TIM

CN CA MT PHNG TRNH TCH

PHN VOLTERRA -HAMMERSTEIN

EXISTENCE OF ASYMPTOTICALLY

STABLE SOLUTIONS FOR A VOLTERRA

-HAMMERSTEIN INTEGRAL EQUATION

L Th Phng Ngc(1) Nguyn Thnh Long(2)

[email protected] (1)Trng C S phm

Nha Trang, Khnh Ho. (2)

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-1.2

10:20-

10:35

S TN TI, BNG N V TNH TT

DN CA NGHIM CA MT H

CC PHNG TRNH SNG PHI

TUYN LIN KT VI CC DNG

XON C CA CHT LNG

MAXWELL

EXISTENCE, BLOW-UP AND DECAY

ESTIMATES FOR A SYSTEM OF

NONLINEAR WAVE EQUATIONS

ASSOCIATED WITH THE HELICAL

FLOWS OF MAXWELL FLUID

Cao Hu Ha(1) L Th Phng Ngc(2)

Nguyn Thnh Long(3)

[email protected]

n (1)Khoa Khoa hc C

bn, Trng H Tr

Vinh University (2)Trng C S phm

Nha Trang, Khnh Ho. (3)Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-1.3 10:40-

10:55

S TN TI V NH GI TT DN

CHO MT H CC PHNG TRNH

SNG PHI TUYN VI CC IU

KIN BIN PHI TUYN

EXISTENCE AND DECAY ESTIMATES

FOR A SYSTEM OF NONLINEAR WAVE

EQUATIONS WITH NONLINEAR

BOUNDARY CONDITIONS

L Th Phng Ngc(1) H Ngc K(2) Nguyn Thnh Long(3)

[email protected] (1)Trng C S phm

Nha Trang, Khnh Ho. (2)Khoa Khoa hc C

bn, Trng H Nng

Lm Tp. HCM. (3)Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-1.4 11:00-

11:15

CH V MT BI TON BIN

NHIU IM CHO PHNG TRNH VI

PHN CP BN

NOTE ON A MULTI-POINT BOUNDARY

VALUE PROBLEM FOR A FOURTH-

ORDER DIFFERENTIAL EQUATION

L Xun Trng(1) Phan nh Phng(2)

[email protected] (1)Khoa Ton Thng k,

Trng H Kinh t TP.

HCM. (2) Khoa C bn, Trng

H Nguyn Tt Thnh

I-O-1.5 11:20-

11:35

BAO HM THC VI PHN BC HAI

VI IU KIN BIN M-IM

SECOND ORDER DIFFERENTIAL

INCLUSIONS WITH M-POINTS

BOUNDARY CONDITIONS

L Xun Trng [email protected]

Khoa Ton Thng k,

Trng H Kinh t Tp.

HCM.

14

I-O-1.6 11:40-

11:55

S TN TI TON CC V NH

GI TT DN CHO MT PHNG

TRNH SNG PHI TUYN VI BIN

TN X

GLOBAL EXISTENCE AND DECAY

ESTIMATES FOR A NONLINEAR WAVE

EQUATION WITH BOUNDARY

DISSIPATION

Trn Minh Thuyt(1) Huy Hong(1) L Duy Hin(2)

[email protected] (1)Khoa Tin hc Qun l,

Trng H Kinh t TP.

HCM. (2)Khoa T nhin, i

hcTh Du Mt, Bnh

Dng.

I-O-1.7 14:00-

14:15

S TN TI V N NH CA MT

PHNG TRNH SNG PHI TUYN

LIN KT VI IU KIN BIN

CHA TCH CHP

EXISTENCE AND STABILITY OF A

NONLINEAR WAVE EQUATION

ASOCIATED WITH BOUNDARY

CONDITIONS INVOLVING

CONVOLUTION

L Khnh Lun [email protected]

Khoa Ton Thng k,

Trng i hc Kinh t

Tp. HCM

I-O-1.8 14:20-

14:35 BI TON HN HP CHO MT


KIU KIRCHHOFF: XP X TUYN

TNH V KHAI TRIN TIM CN CA

NGHIM THEO NHIU THAM S B

ON A MIXED PROBLEM FOR A

NONLINEAR WAVE EQUATION OF

KIRCHHOFF TYPE: LINEAR

APPROXIMATION AND ASYMPTOTIC

EXPANSION OF SOLUTIONS IN MANY

SMALL PARAMETERS

Nguyn Anh Trit [email protected]

om

Khoa C Bn, i hc

Kin trc Tp. HCM.

I-O-1.9 14:40-

14:55 MT S TNH CHT NGHIM CA

PHNG TRNH LOVE LIN KT VI

IU KIN BIN KHNG THUN

NHT

SOME PROPERTIES OF SOLUTIONS OF

A LOVE'S EQUATION ASSOCIATED

WITH A NONHOMOGENEOUS

BOUNDARY CONDITION

Nguyn Tun Duy [email protected]

m

Khoa C bn, i hc

Ti chnh v Marketing

I-O-1.10 15:15-

15:30 NGHIM TUN HON CA MT

PHNG TRNH NHIT PHI TUYN

TRONG MIN HNH CU LIN KT

VI IU KIN BIN HN HP

PERIODIC SOLUTIONS OF A

NONLINEAR HEAT EQUATION IN THE

SPHERICAL DOMAIN ASSOCIATED

WITH A MIXED CONDITION

Nguyn V Dzng [email protected]

Khoa C bn, i hc

Ti chnh v Marketing

I-O-1.11 15:35-

15:50 V MT PHNG TRNH SNG PHI

TUYN VI IU KIN BIN CHA

TCH CHP: KHAI TRIN TIM CN

CA NGHIM THEO BN THAM S

B

ON A NONLINEAR WAVE EQUATION

WITH THE BOUNDARY CONDITIONS

INVOLVING CONVOLUTION:

Phm Thanh Sn(1) H Quang c(2) Trn Minh Thuyt(1)

thanhson_pham27@yaho

o.com (1)Khoa Tin hc Qun l,

i hc Kinh t TP.

HCM. (2)Trng THPT Vnh

Kim, Chu Thnh, Tin

Giang.

15

ASYMPTOTIC EXPANSION OF

SOLUTIONS IN FOUR SMALL

PARAMETERS

I-O-1.12 15:55-

16:10 V MT PHNG TRNH SNG

TUYN TNH LIN KT VI MT BI

TON CAUCHY CHO PHNG TRNH

VI PHN THNG

ON A LINEAR WAVE EQUATION

ASSOCIATED WITH A CAUCHY

PROBLEM FOR AN ORDINARY

DIFFERENTIAL EQUATION

Nguyn Hu Nhn

(1)

Trng Th Nhn(2) Trn Minh Thuyt(3)

[email protected] (1)B mn Ton, Khoa

Khoa hc c bn,

Trng H ng Nai. (2) Khoa Khoa hc T nhin, Hc vin Hi qun Nha Trang.

(3)Khoa Tin hc Qun l,

Trng H Kinh t

Tp.HCM.

I-O-1.13 16:15-

16:30 THUT GII LP CP CAO CHO MT


VI CC IU KIN BIN HN HP

THUN NHT

HIGH-ORDER ITERATIVE SCHEMES

FOR A NONLINEAR WAVE EQUATION

ASSOCIATED WITH THE MIXED

HOMOGENEOUS CONDITIONS

Nguyn Th Tho Trc,

Phm Gia Khnh

[email protected]

B mn Ton, Khoa S

phm, Trng H Cn

Th

I-O-1.14 16:35-

16:50 V MT PHNG TRNH NHIT PHI

TUYN LIN KT VI IU KIN

BIN HN HP KHNG THUN

NHT

ON A NONLINEAR HEAT EQUATION

ASSOCIATED WITH A MIXED

INHOMOGENEOUS CONDITION

Nguyn Vn (1) L Hu K Sn(1) Nguyn Hu Nhn(2)

[email protected]

om (1) B mn Ton, Khoa

Khoa hc c bn,

Trng H Cng nghip

Thc phm TP. HCM. (1) B mn Ton, Khoa Khoa hc c bn, Trng H Cng nghip Thc phm TP. HCM,

(2) B mn Ton, Khoa

Khoa hc c bn,

Trng H ng Nai.

I-O-1.15 16:55-

17:10 XP X TUYN TNH V KHAI TRIN

TIM CN CA NGHIM PHNG

TRNH SNG CARRIER PHI TUYN

TRONG HNH VNH KHN VI IU

KIN DIRICHLET

LINEAR APPROXIMATIONS AND AN

ASYMPTOTIC EXPANSION OF

SOLUTIONS FOR A NONLINEAR

CARRIER WAVE EQUATION IN THE

ANNULAR WITH DIRICHLET

CONDITIONS

L Hu K Sn(1) Nguyn Tun Duy(2)

Nguyn V Dzng(2) Nguyn Anh Trit(3)

[email protected]

B mn Ton, Khoa

Khoa hc c bn,

Trng H Cng nghip

Thc phm TP. HCM. (1) B mn Ton, Khoa Khoa hc c bn, Trng H Cng nghip Thc phm TP. HCM.

(2) Khoa C bn, Trng H Ti chnh v Marketing,

(3) Khoa C Bn, Trng

H Kin trc Tp. HCM.

16

Phn ban 2: GII TCH V TI U II - ANALYSIS AND OPTIMIZATION II a im: F 205B Ch tr: TS. L S ng

S TT Thi gian

Tn bo co Bo co vin/

ng tc gi Email/n v

I-O-2.1 14:00-

14:15

VI VN M V SNG LU

NG CHO CC M HNH TN X-

KHUYCH TN

SOME OPEN QUESTIONS ON

TRAVELING WAVES OF DIFFUSIVE-

DISPERSIVE MODELS

Mai c Thnh [email protected]

B mn Ton, Trng

H Quc t, HQG-

HCM

I-O-2.2

14:20-

14:35 VA CHM CA SOLITON QUANG

HC CA PHNG TRNH

SCHRDINGER PHI TUYN

CROSS-TALK DYNAMICS OF OPTICAL

SOLITONS IN A MULTICHANNEL

OPTICAL WAVEGUIDE

Nguyn Minh Qun

[email protected]

B mn Ton, Trng

H Quc t, HQG-

HCM

I-O-2.3 14:40-

14:55 PHNG PHP LAVRENTIEV GII

BI TON PHI TUYN T KHNG

CHNH

LAVRENTIEV REGULARIZATION

METHOD FOR NONLINEAR ILL-POSED

PROBLEMS

Nguyn Vn Knh [email protected]

Khoa Khoa hc c bn,

Trng H Cng nghip

Thc phm Tp. HCM.

I-O-2.4 15:00-15:15

V BI TON CAUCHY VI IU

KIN KHNG A PHNG CHO CC

H IU KHIN M.

ON THE CAUCHY PROBLEM WITH

NONLOCAL CONDITIONS FOR FUZZY

CONTROL SYSTEMS.

Nguyn nh Ph, Ng Vn Ha

[email protected]

.vn

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-2.5 15:35-

15:50 MT VI KT QU CA PHNG

TRNH VI PHN TP VI TON T

CAUSAL

SOME RESULTS ON SET

DIFFERENTIAL EQUATIONS WITH

CAUSAL OPERATOR

Nguyn Ph Vinh

[email protected]

Trng C Y T Cn

Th

I-O-2.6 15:55-

16:10 N NH PRACTICAL V N NH

LAGRANGE CHO H PHNG TRNH

VI PHN M C IU KHIN

PRACTICAL STABILITY AND

LAGRANGE STABILITY OF FUZZY

CONTROL DIFFERENTIAL EQUATIONS

H V,

L Thanh Quang

[email protected]

Khoa K ton Kim ton,

i hc Hng Vng

I-O-2.7 16:15-

16:30 V NGHIM CA PHNG TRNH VI

TCH PHN VOLTERRA GI TR

KHONG DI MT VI KIU IU

KHIN

ON THE SOLUTION FOR INTERVAL-

VALUED VOLTERRA INTEGRAL

EQUATIONS UNDER SOME KINDS OF

CONTROLS

Trng Vnh An, L c Thng

[email protected]

m

Khoa c bn, Trng

H S phm K Thut

Tp.HCM., Trng H

S phm K thut Tp.

HCM

17

I-O-2.8 16:35-

16:50

HOCH NH VT T TN KHO C

GII HN VN V MT BNG LU

TR

THE PLANNING OF LIMITED FUND

AND STORE INVENTORY

Nguyn Ph Vinh

(1)

Phm Hng Danh(2)

[email protected] (1) Khoa C bn, i hc

Cng nghip TP. HCM.

(2) Khoa Thng k-Ton,

Trng H Kinh t Tp.

HCM.

I-O-2.9 16:55-

17:10

S TN TI NGHIM CA MT

PHNG TRNH HM PHI TUYN C

GI TR TRONG KHNG GIAN

BANACH TNG QUT

EXISTENCE OF SOLUTIONS FOR A

NONLINEAR FUNCTIONAL EQUATION

WITH VALUES IN A GENERAL BANACH

SPACE

Hunh Th Hong Dung

[email protected]

m

Khoa C Bn, Trng

H Kin trc Tp. HCM.

Phn ban 3: I S V NG DNG - ALGEBRA AND APPLIED MATHS a im: F205A Ch tr: PGS.TS. Bi Xun Hi

S TT Thi gian

Tn bo co Bo co vin/

ng tc gi Email/n v

I-O-3.1 14:00-

14:15

NHN DNG BNG S XE VIT

NAM BNG LOGIC M

RECOGNIZING VIETNAM LICENSE

NUMBER USING FUZZY LOGIC

Phm Th Bo,

Bi Ngc Nam,

H Vn Tn

[email protected]

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-3.2 14:20-

14:35 GII THIU V RI RO TN DNG

INTRODUCTION TO CREDIT RISK

Dng ng Xun Thnh,

Ha Vy Ngc Anh

[email protected]

om

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-3.3 14:40-

14:55 KHONG CCH TIP TUYN,

KHONG CCH DA TRN HM MAX

V SAI S TRONG PHN LOI THNG

K

TANGENT DISTANCE, DISTANCE USING

MAX FUNCTION AND STATISTICAL

CLSSIFICATION ERROR

Nguyn Ngc Khim

(1)

T Anh Dng(2)

[email protected]

m (1) Trng Trung hc ph thng chuyn L T Trng, Tp. Cn Th

(2) Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-3.4 15:00-

15:15 C LNG HN S DNG CA

THUC BNG M HNH HIU NG

HN HP

ON ESTIMATING THE EXPIRY OF

MEDICINES USING MIXED-EFFECTS

MODEL

Hong Vn H, Hong Anh Tun,

Ng Minh Mn

[email protected]

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-3.5 15:35-

15:50 V CC NH GI TRONG XP X

POISSON QUA MT KHONG CCH

XC SUT DNG TROTTER

ON THE BOUNDS IN POISSON

APPROXIMATION VIA TROTTER TYPE

DISTANCE

Trn Lc Hng [email protected]

Khoa C bn, Trng

H Ti chnh v

Marketing

18

I-O-3.6 15:55-

16:10

PHN LOI BNG PHNG PHP BAYES V P DNG

CLASSIFICATION BY BAYESIAN

METHOD AND APPLICATIONS

V Vn Ti [email protected]

Khoa Khoa hc T

nhin, Trng H Cn

Th

I-O-3.7 16:15-16:30

NHM TUYN TNH TRN MIN

NGUYN

THE GENERAL LINEAR GROUPS OVER

DOMAINS

Phm Th Nhn, Trn Ngc Hi

phamthenhan1988@yaho

o.com

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-3.8 16:35-

16:50

NHM CON CA NHM TUYN TNH Y CHA NHM CON S CP TRN VNH M RNG C HNG HU HN

SUBGROUPS OF THE FULL LINEAR

GROUP CONTAINING THE

ELEMENTARY SUBGROUP OVER AN

EXTENSION RING OF FINITE RANK

Nguyn Hu Tr Nht,

Trn Ngc Hi

[email protected]

m

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-3.9 16:55-

17:10

V NHM CON CHUN TC TRONG

NHM TUYN TNH TNG QUT

TRN VNH CHIA

ON SUBNORMAL SUBGROUPS IN

GENERAL SKEW LINEAR GROUPS

Nguyn Vn Thn [email protected]

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-3.10 17:15-

17:30 V TNH CN CA NHM CON TI

I TRONG NHM TUYN TNH TRN

VNH CHIA

ON RADICALITY OF MAXIMAL

SUBGROUPS IN SKEW LINEAR GROUPS

Trnh Thanh o [email protected]

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

Phn ban 4: C HC - MECHANICS a im: E 202 Ch tr: TS. Trnh Anh Ngc

S TT Thi gian

Tn bo co Bo co vin/

ng tc gi Email/n v

I-O-4.1 10:00-

10:15

V BI TON NGC BOUSSINESQ

ON THE BOUSSINESQS INVERSE

PROBLEM

Trnh Anh Ngc [email protected]

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-4.2 10:20-

10:35 A ROTATION-FREE ISOGEOMETRIC

FORMULATION FOR SOLID

MECHANICS PROBLEMS

CNG THC NG HNH HC VI GC

QUAY T DO CHO BI TON C HC

Nguyn Xun Hng

[email protected]

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-4.3 10:40-

10:55 PHN TCH GII HN CA TM

MINDLIN BNG PHNG PHP CS-DSG

A LIMIT ANALYSIS OF MINDLIN PLATES

USING CS-DSG METHOD

Nguyn Thi Trung

(1)

Trng Anh Tun(2) Phng Vn Phc(3) Lng Vn Hi(2)

[email protected]

m (1)Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM (2)Trng H Bch

khoa, HQG-HCM (3) Trng H Tn c

19

Thng

I-O-4.4 11:00-11:15

DNG CHY N NHT KHNG NG

NHIT TRONG NG THT I XNG

TRC

NON-ISOTHERMAL VISCOELASTIC FLOW

AT HIGH WEISSENBERG NUMBERS IN AN

AXISYMMETRIC CONTRACTION

Bi Minh Tr, Trnh Anh Ngc, L Vn Chnh

[email protected]

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-4.5 11:20-

11:35 GII THIU CHNG TRNH M

NGUN M OPENFOAM

AN INTRODUCTION TO THE OPEN

SOURCE PROGRAMM OPENFOAM

L Vn Chnh, Bi Minh Tr,

Trnh Anh Ngc

[email protected]

om

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-4.6 11:40-

11:55 PHN TCH BI TON EULER BNG

PHNG PHP TAYLOR - GALERKIN

ANALYSIS OF EULER PROBLEM BY USING

TAYLOR GALERKIN METHOD

Nguyn Thanh Chuyn

[email protected]

Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM

I-O-4.7 14:00-

14:15

PHN TCH TIN CY CA TM

KIRCHHOFF C GIA CNG GN

THE RELIABILITY ANALYSIS OF

KIRCHHOFF STIFFENED PLATES

Trn Vn Nh(1) Nguyn Thi Trung(1)

Nguyn Xun Hng(1)

Bi Xun Thng(1) Phng Vn Phc(2)

[email protected]

om (1)Khoa Ton - Tin hc,

Trng H KHTN,

HQG-HCM (2) Trng H Tn c

Thng

I-O-4.8 14:20-

14:35 PHN TCH BI TON TNG TC

RN-LU CHT BNG PHNG PHP

PHN T HU HN LAGRANGIAN-

EULERIAN BT K

ANALYSIS OF FLUID-STRUCTURE

INTERACTION PROBLEM BY ARBITRARY

LAGRANGIAN-EULERIAN FINITE

ELEMENT METHOD

Nguyn Hong Sn

mrnguyenhoangson@g

mail.com

Trng C K thut

Cao Thng

I-O-4.9 14:40-

14:55 PHN TCH NG X CA VT TH

RN CHU TC DNG CA LU CHT

BNG PHNG PHP PHN T HU

HN TRN DA TRN CNH (ES-FEM)

ANALYZING THE BEHAVIOR OF

STRUCTURE UNDER THE EFFECT OF

FLUID USING AN EDGE-BASED

SMOOTHED FINITE ELEMENT METHOD

(ES-FEM)

Liu Xun Qu(1)

Nguyn Thi Trung(2)

Nguyn Hong Sn(3) Phng Vn Phc(4)

[email protected]

m (1)Trng H Nguyn Tt Thnh (2)

Khoa Ton - Tin hc, Trng H KHTN, HQG-HCM (3)Trng C K thut Cao Thng (4) Trng H Tn c Thng

I-O-

4.10

15:15-

15:30 PHN TCH P NG NG HC CA

TM TRN NN N NHT CHU MT

KHI LNG DI CHUYN BNG

PHNG PHP CS-MIN3

DYNAMIC RESPONSE OF PLATES ON THE

VISCOELASTIC FOUNDATION UNDER A

MOVING MASS BY CS-MIN3 METHOD

Phng Vn Phc(1) Nguyn Thi Trung(2)

Lng Vn Hi(3) Nguyn Xun Hng(2)

phucphungvan@gmail.

com (1) Trng H Tn c Thng (2)Khoa Ton - Tin hc, Trng H KHTN, HQG-HCM (3)Trng H Bch khoa, HQG-HCM

I-O-

4.11

15:35-

15:50 PHNG PHP NI SUY IM TNG

THCH TUYN TNH (LC-PIM) DNG

CHO PHN TCH NG X N-DO-

Bi Xun Thng(1) Nguyn Thi Trung(1)

Phng Vn Phc(2)

[email protected]

n (1)Khoa Ton - Tin hc,

20

NHT CA VT TH RN HAI CHIU

A LINEARLY CONFORMING POINT

INTERPOLATION METHOD (LC-PIM) FOR

VISCO-ELASTOPLASTIC ANALYSIS OF 2D

SOLIDS

Nguyn Xun Hng(1)

Trng H KHTN,

HQG-HCM (2) Trng H Tn c

Thng

I-O-

4.12

15:55-

16:10 TI U HA H THNG GIM XC

T 5 BC T DO

OPTIMIZE AUTOMOBILE SUSPENSION

WITH FIVE DEGREES OF FREEDOM

Nguyn Quang Vinh, Trn Huy Long

nguyenquangvinh_hute

[email protected]

Khoa C - in - in

t, Trng H K

Thut Cng Ngh Tp.

HCM

I-O-

4.13

16:15-

16:30 IU KHIN THCH NGHI H THNG

CN CU CONTAINER C B MA ST

ADAPTIVE CONTROL OF CONTAINER

CRANES WITH FRICTION

COMPENSATION

Nguyn Quc Ch, Trng Quc Ton, V Anh Huy, Thi

Hong Ch An

[email protected]

B Mn C in T,

Khoa C Kh, Trng

H Bch khoa,

HQG-HCM

I-O-

4.14

16:35-

16:50 M HNH V PHNG PHP S CHO

BI TON M PHNG PH HU VT

RN

MODELS AND NUMERICAL METHODS

FOR MODELLING FRACTURE OF SOLIDS

Nguyn Vnh Ph [email protected]

Trng H Tn c

Thng

21

I-O-1.1

S TN TI NGHIM N NH TIM CN CA

MT PHNG TRNH TCH PHN VOLTERRA -HAMMERSTEIN

L Th Phng Ngc(1), Nguyn Thnh Long(2)

(1)Trng Cao ng S phm Nha Trang.

(2) Khoa Ton-tin hc, Trng H KHTN, HQG-HCM

Tm tt

Trong bo co ny, chng ti trnh by cc kt qu v tnh gii c v s tn ti nghim n nh tim

cn ca mt phng trnh tch phn Volterra - Hammerstein. Trc ht, bi ton v s tn ti nghim ca

phng trnh ang kho st c a v bi ton xt s tn ti im bt ng ca mt ton t tch phn phi

tuyn, t chng ti c th cho cc gi thit thch hp v s dng mt nh l im bt ng kiu

Krasnosel'skii thu c s tn ti nghim. Tip theo, bng cch tng cng cc gi thit, s tn ti ca cc

nghim n nh tim cn ca phng trnh cng c chng minh. minh ha cc kt qu ni trn, chng ti

xin nu mt v d. Kt qu ny l mt tng ha tng i trong [1] [6].

EXISTENCE OF ASYMPTOTICALLY STABLE SOLUTIONS FOR

A VOLTERRA -HAMMERSTEIN INTEGRAL EQUATION

Abstract

The report is devoted to the study of a Volterra - Hammerstein integral equation. First, this equation is

reduced to a fixed point problem of a nonlinear integral operator and hence we can give suitable assumptions and

using a fixed point theorem of Krasnosel'skii type in order to obtain the existence of solutions. Next, we prove

the existence of asymptotically stable solutions for the above equation. In order to illustrate the results, an

example is also presented. This result is a relative generalization of [1] [6].

References

[1] L. T. P. Ngoc, N. T. Long, On a fixed point theorem of Krasnosel'skii type and application to integral

equations, Fixed Point Theory and Applications, Vol. 2006 (2006), Article ID 30847, 24 pages.

[2] L. T. P. Ngoc, N. T. Long, The Hukuhara Kneser property for a nonlinear integral equation, Nonlinear

Anal. TMA. 69 (11) (2008) 3952 3963.

[3] L. T. P. Ngoc, N. T. Long, Applying a fixed point theorem of Krasnosel'skii type to the existence of

asymptotically stable solutions for a Volterra Hammerstein integral equation, Nonlinear Anal. TMA. 74 (11)

(2011) 3769 3774.

[4] L. T. P. Ngoc, N. T. Long, Existence of asymptotically stable solutions for a nonlinear functional integral

equation with values in a general Banach space, Nonlinear Anal. TMA. 74 (18) (2011) 7111 7125.

[5] L. T. P. Ngoc, N. T. Long, Solving a system of nonlinear integral equations and existence of asymptotically

stable solutions, Differential Equations & Applications, 4 (2) (2012) 233255.

[6] L. T. P. Ngoc, N. T. Long, Solvability and existence of asymptotically stable solutions for a Volterra

Hammerstein integral equation on an infinite interval, Journal of Integral Equations and Applications (Rocky

Mountain Mathematics Consortium), (accepted for publication).

_________________

Email lin h: [email protected]

22

I-O-1.2

S TN TI, BNG N V TNH TT DN CA NGHIM

CA MT H CC PHNG TRNH SNG PHI TUYN

LIN KT VI CC DNG XON C CA CHT LNG MAXWELL

Cao Hu Ha(1), L Th Phng Ngc(2), Nguyn Thnh Long(3)

(1) Khoa Khoa hc C bn, Trng i hc Tr Vinh

(2) Trng Cao ng S phm Nha Trang

(3) Khoa Ton-tin hc, Trng H KHTN, HQG-HCM.

Tm tt

Trong bo co ny, chng ti kho st mt h cc phng trnh sng phi tuyn lin kt vi cc dng

xon c ca cht lng Maxwell. Trc ht, da vo phng php Faedo-Galerkin v l lun v tnh tr mt

tng ng vi tnh trn ca cc iu kin ban u, chng ti thit lp hai nh l tn ti a phng ca cc

nghim yu. Tip theo, chng ti chng minh rng mi nghim yu vi nng lng ban u m s bng n

thi gian hu hn. Cui cng, chng ti cho mt iu kin m bo s tn ti ton cc v tnh tt dn theo

hm m ca nghim yu thng qua vic xy dng mt phim hm Lyapunov thch hp. Kt qu ny l mt tng

ha tng i trong [1].

EXISTENCE, BLOW-UP AND DECAY ESTIMATES FOR

A SYSTEM OF NONLINEAR WAVE EQUATIONS

ASSOCIATED WITH THE HELICAL FLOWS OF MAXWELL FLUID

Abstract

The report is devoted to the study of a system of nonlinear wave equations associated with the helical

flows of Maxwell fluid. First, based on Faedo-Galerkin method and standard arguments of density corresponding

to the regularity of initial conditions, we establish two local existence theorems of weak solutions. Next, we

prove that any weak solutions with negative initial energy will blow up in finite time. Finally, we give a

sufficient condition to guarantee the global existence and exponential decay of weak solutions via the

construction of a suitable Lyapunov functional. This result is a relative generalization of [1].

Reference

[1] L. X. Truong, L. T. P. Ngoc, C. H. Hoa, N. T. Long, On a system of nonlinear wave equations associated

with the helical flows of Maxwell fluid, Nonlinear Anal. RWA. 12 (6) (2011) 3356 - 3372.

http://dx.doi.org/10.1016/j.nonrwa.2011.05.033

____________________________


23

I-O-1.3

S TN TI V NH GI TT DN CHO MT H CC PHNG TRNH SNG PHI

TUYN VI CC IU KIN BIN PHI TUYN

L Th Phng Ngc(1), H Ngc K(2), Nguyn Thnh Long(3)

(1)Trng Cao ng S phm Nha Trang.

(2)Khoa Khoa hc C bn, i hc Nng Lm Tp. HCM,

(3)Khoa Ton-Tin hc, i hc Khoa hc T nhin TP. HCM.

Tm tt

Bo co nghin cu mt h cc phng trnh sng phi tuyn vi cc iu kin bin phi tuyn. u tin,

da vo phng php Faedo-Galerkin v l lun chun v tnh tr mt tng ng vi tnh trn ca cc iu kin

u, chng ti thit lp hai nh l tn ti ton cc ca cc nghim yu. Tip theo, tnh tt dn theo hm m ca

nghim yu nh vo vic xy dng mt phim hm Lyapunov thch hp.

EXISTENCE AND DECAY ESTIMATES FOR A SYSTEM OF NONLINEAR WAVE

EQUATIONS WITH NONLINEAR BOUNDARY CONDITIONS

Abstract

The report is devoted to the study of a system of nonlinear wave equations with nonlinear boundary

conditions. First, based on Faedo-Galerkin method and standard arguments of density corresponding to the

regularity of initial conditions, we establish two global existence theorems of weak solutions. Next, the

exponential decay property of the global solution via the construction of a suitable Lyapunov functional is

presented.

___________________________

Email lin h:[email protected]

24

I-O-1.4

CH V MT BI TON BIN NHIU IM

CHO PHNG TRNH VI PHN CP BN

L Xun Trng(1), Phan nh Phng(2)

(1) Khoa Ton Thng k, Trng i hc Kinh t TP. HCM.

(2) Khoa C bn, Trng i hc Nguyn Tt Thnh.

Tm tt

Bi bo ny nghin cu mt s iu kin v s tn ti nghim dng ca bi ton bin nhiu im

cho phng trnh vi phn cp bn. Cng c chnh y l nh l im bt ng Guo-Krasnoselskii v k thut

lp n iu.

NOTE ON A MULTI-POINT BOUNDARY VALUE PROBLEM

FOR A FOURTH-ORDER DIFFERENTIAL EQUATION

Abstract

The report studies several sufficient conditions for the existence of positive solutions for a multi-point

fourth order boundary value problem. Our main tools are the Guo-Krasnoselskii's fixed point theorem and the

monotone iterative technique.

____________________________


25

I-O-1.5

BAO HM THC VI PHN BC HAI VI IU KIN BIN m-IM

L Xun Trng

Khoa Ton Thng k, Trng i hc Kinh t TP. HCM.

Tm tt

Chng ti trnh by mt s kt qu v s tn ti nghim ca mt lp bi ton bin m-im cho bao hm

thc vi phn bc hai v bao hm thc tin ha c quy nh bi mt ton t di vi phn lin quan n s hi

t hp ca cc o Young v mt s cng c khc. Mt vi tnh cht tp ca tp hp nghim cng c xem

xt. Kt qu ny m rng v ci tin kt qu tng ng trong [1].

SECOND ORDER DIFFERENTIAL INCLUSIONS

WITH m-POINTS BOUNDARY CONDITIONS

Abstract

We state various existence results for a class of m-points boundary value problems including both

second order differential inclusion and evolution inclusion governed by a subdifferential operator involving the

narrow convergence of Young measures and other tools. Some topological properties of a set of solutions are

also discussed. This result extends and improves the corresponding result in [1].

Reference

[1] Charles Castaing, Le Xuan Truong, Some topological properties of solution sets in a second order dfferential

inclusion with m-point boundary conditions, Set-Valued and Variational Analysis, 20 (2) (2012) 249-277.

______________________________


26

I-O-1.6

S TN TI TON CC V NH GI TT DN CHO MT PHNG TRNH SNG

PHI TUYN VI BIN TN X

Trn Minh Thuyt(1), Huy Hong(2), L Duy Hin(3)

(1, 2) Khoa Tin hc Qun l, i hc Kinh t TP. HCM.

(3) Khoa T nhin, i hc Th Du Mt.

Tm tt

Trong bo co ny, chng ti xt phng trnh sng phi tuyn vi bin tn x sau y

2 2

0

1

0 1

| | | | ( , ), 0 1, 0,

(0, ) (0, ) (0, ) ( ),

(1, ) (1, ) (1, ) ( ),

( ,0) ( ), ( ,0) ( ),

p q

tt xx t

x t

x t

t

u u u u u K u u f x t x t

u t u t u t g t

u t u t u t g t

u x u x u x u x

trong 2, 0p q K l cc hng s dng cho trc, v 0 1 0 1, , , ,f g g u u l cc hm s cho trc.

u tin, da vo phng php Faedo-Galerkin v l lun chun v tnh tr mt tng ng vi tnh trn ca cc

iu kin u, chng ti thit lp hai nh l tn ti ton cc ca cc nghim yu. Tip theo, vi 2,p q

tnh tt dn theo hm m ca nghim yu nh vo vic xy dng mt phim hm Lyapunov thch hp.

GLOBAL EXISTENCE AND DECAY ESTIMATES FOR A NONLINEAR WAVE

EQUATION WITH BOUNDARY DISSIPATION

Abstract

In this report, we consider the following nonlinear wave equation with boundary dissipation

2 2

0

1

0 1

| | | | ( , ), 0 1, 0,

(0, ) (0, ) (0, ) ( ),

(1, ) (1, ) (1, ) ( ),

( ,0) ( ), ( ,0) ( ),

p q

tt xx t

x t

x t

t

u u u u u K u u f x t x t

u t u t u t g t

u t u t u t g t

u x u x u x u x

where 2, 0p q K are given constants and 0 1 0 1, , , ,f g g u u , are given functions. First, based on

Faedo - Galerkin method and standard arguments of density corresponding to the regularity of initial conditions,

we establish two global existence theorems of weak solutions. Next, with 2,p q the exponential decay

property of the global solution via the construction of a suitable Lyapunov functional is presented.

______________________________


27

I-O-1.7

S TN TI V N NH CA MT PHNG TRNH SNG PHI TUYN

LIN KT VI IU KIN BIN CHA TCH CHP

L Khnh Lun

Khoa Ton Thng k, Trng H Kinh t Tp. HCM

Tm tt

Trong bi ny, mt phng trnh sng phi tuyn lin kt vi cc iu kin bin khng thun nht cha

tch chp c kho st. S dng phng php Faedo - Galerkin v nh l nhng compact, chng ti chng

minh s tn ti v duy nht nghim yu ca bi ton trn. Mt khc, s n nh ca nghim cng c tho lun.

Kt qu ny m rng v ci tin kt qu tng ng trong [1].

EXISTENCE AND STABILITY OF A NONLINEAR WAVE EQUATION

ASOCIATED WITH BOUNDARY CONDITIONS INVOLVING CONVOLUTION

Abstract

In this report, a nonlinear wave equation associated with the nonhomogeneous boundary conditions

involving convolution is investigated. Using the Faedo - Galerkin method and the compact imbedding theorems,

we prove the existence and uniqueness of a weak solution of the above problem. On the other hand, the stability

of solution is also discussed. This result extends and improves the corresponding result in [1].

Reference

[1] L. T. P. Ngoc, L. N. K. Hang, N. T. Long, On a nonlinear wave equation associated with the boundary

conditions involving convolution, Nonlinear Anal. TMA. 70 (11) (2009) 3943 - 3965.

____________________________


28

I-O-1.8

BI TON HN HP CHO MT PHNG TRNH SNG PHI TUYN

KIU KIRCHHOFF: XP X TUYN TNH V KHAI TRIN TIM CN

CA NGHIM THEO NHIU THAM S B

Nguyn Anh Trit

Khoa C Bn, i hc Kin trc thnh ph H Ch Minh.

Tm tt

Trong bo co ny, chng ti xt mt bi ton hn hp cho mt phng trnh sng phi tuyn kiu

Kirchhoff. Bng thut gii xp x tuyn tnh kt hp vi phng php Faedo - Galerkin v phng php compact

yu, chng ti chng minh s tn ti duy nht mt nghim yu. Ngoi ra, mt khai trin tim cn cp cao theo

nhiu tham s b ca nghim ca bi ton cng c thit lp.

ON A MIXED PROBLEM FOR A NONLINEAR WAVE EQUATION

OF KIRCHHOFF TYPE: LINEAR APPROXIMATION AND

ASYMPTOTIC EXPANSION OF SOLUTIONS IN MANY SMALL PARAMETERS

Abstract

In this report, we consider a mixed problem for a nonlinear wave equation of Kirchhoff type.

Combining the linearization method, the Faedo - Galerkin method and the weak compact method, we prove

existence of a unique weak solution. Furthermore, an asymptotic expansion of solutions of high order in many

small parameters is established.

________________________________


29

I-O-1.9

MT S TNH CHT NGHIM CA PHNG TRNH LOVE

LIN KT VI IU KIN BIN KHNG THUN NHT

Nguyn Tun Duy

Khoa C bn, i hc Ti chnh v Marketing

Tm tt

Trong bo co ny, chng ti s dng cc phng php Faedo - Galerkin, compact v n iu

nghin cu mt phng trnh Love phi tuyn vi iu kin hn hp khng thun nht. Cc kt qu thu c

y l s tn ti duy nht ca nghim yu, tnh trn v dng iu tim cn ca nghim. Kt qu ny l mt tng

ha tng i trong [1].

SOME PROPERTIES OF SOLUTIONS OF A LOVE'S EQUATION

ASSOCIATED WITH A NONHOMOGENEOUS BOUNDARY CONDITION

Abstract

In this report, we use the Faedo - Galerkin method, compactness method and monotone method in order

to study a nonlinear Love's equation with mixed nonhomogeneous conditions. The results obtained here are

existence of a weak solution, uniqueness, regularity and asymptotic behavior of solutions. This result is a relative

generalization of [1].

Reference

[1] L. T. P. Ngoc, N. T. Duy, N. T. Long, Existence and properties of solutions of a boundary problem for a

Love's equation, Bulletin of the Malaysian Mathematical Sciences Society, (accepted for publication).

________________________________


30

I-O-1.10

NGHIM TUN HON CA MT PHNG TRNH NHIT PHI TUYN

TRONG MIN HNH CU LIN KT VI IU KIN BIN HN HP

Nguyn V Dzng


Tm tt

Trong bo co ny, phng php compact chun c s dng chng minh s tn ti ca nghim

tun hon ca mt phng trnh nhit phi tuyn trong min hnh cu lin kt vi mt iu kin hn hp.

PERIODIC SOLUTIONS OF A NONLINEAR HEAT EQUATION

IN THE SPHERICAL DOMAIN ASSOCIATED WITH A MIXED CONDITION

Abstract

In this report, a standard compactness argument is used to prove the existence of periodic solution of a

nonlinear heat equation in the spherical domain associated with a mixed condition.

_______________________________


31

I-O-1.11

V MT PHNG TRNH SNG PHI TUYN VI IU KIN BINCHA TCH CHP:

KHAI TRIN TIM CN CANGHIM THEO BN THAM S B

Phm Thanh Sn(1), H Quang c(2), Trn Minh Thuyt(1)

(1) Khoa Tin hc Qun l, Trng i hc Kinh t TP. HCM.

(2)Trng THPT Vnh Kim, Chu Thnh, Tin Giang.

Tm tt

Xt bi ton gi tr bin ban u cho phng trnh sng phi tuyn

2 2

00

2

1 1

0 1

( ) | | | | ( , ), 0 1, 0 ,

( ) (0, ) (0, ) ( ) (0, ) ( ),

( ) (1, ) (1, ) | (1, ) | (1, ),

( ,0) ( ), ( .0) ( ),

p q

tt xx t t

t

x

q

x t t

t

u t u K u u u u F x t x t T

t u t K u t k t s u s ds g t

t u t K u t u t u t

u x u x u x u x

trong 0 1 1, , 2; , , 0; , 0p q K K K l cc hng s dng cho trc, v 0 1, , , , ,F g k u u l cc hm s cho trc. u tin, s tn ti v duy nht nghim yu c chng minh da vo phng php

Galerkin. Sau , vi 0 12, 0,p q u u chng ti thu c mt khai trin tim cn nghim ca bi

ton n cp N theo bn tham s b 0 1, , ,K K vi sai s 122 2 2 2

0 1 .N

K K

Kt qu ny l

mt tng ho tng i trong [1].

ON A NONLINEAR WAVE EQUATION WITH THE BOUNDARY CONDITIONS

INVOLVING CONVOLUTION: ASYMPTOTIC EXPANSION

OF SOLUTIONS IN FOUR SMALL PARAMETERS

Abstract

Consider the initial-boundary value problem for the nonlinear wave equation

2 2

00

2

1 1

0 1

( ) | | | | ( , ), 0 1, 0 ,

( ) (0, ) (0, ) ( ) (0, ) ( ),

( ) (1, ) (1, ) | (1, ) | (1, ),

( ,0) ( ), ( .0) ( ),

p q

tt xx t t

t

x

q

x t t

t

u t u K u u u u F x t x t T

t u t K u t k t s u s ds g t

t u t K u t u t u t

u x u x u x u x

where 0 1 1, , 2; , , 0; , 0p q K K K are given constants and 0 1, , , , ,F g k u u are given functions. First, the existence and uniqueness of a weak solution are proved by using the Galerkin method. Next,

with 0 12, 0,p q u u we obtain an asymptotic expansion of the solution u of problem up to order

N in four small parameters 0 1, , ,K K with error 122 2 2 2

0 1 .N

K K

This result is a relative

generalization of [1].

Reference

[1] L. T. P. Ngoc, T. M. Thuyet, P. T. Son, N. T. Long, On a nonlinear wave equation with a nonlocal boundary

condition, Acta Math. Vietnamica, 36 (2) (2011) 345 374.

__________________________________


32

I-O-1.12

V MT PHNG TRNH SNG TUYN TNH LIN KT VI MT BI TON

CAUCHY CHO PHNG TRNH VI PHN THNG

Nguyn Hu Nhn(1), Trng Th Nhn(2), Trn Minh Thuyt(3)

(1) B mn Ton, Khoa Khoa hc c bn, i hc ng Nai.

(2) Khoa Khoa hc T nhin, Hc vin Hi qun, Tp. Nha Trang.

(3)Khoa Tin hc Qun l, i hc Kinh t Tp.HCM.

Tm tt

Bo co cp n bi ton gi tr bin ban u cho phng trnh sng tuyn tnh

0 1

( ) ( , ), 0 1, 0 ,

(0, ) (1, ) 0,

( ,0) ( ), ( ,0) ( ),

tt xx tt

t

u u x P F x t x t T

u t u t

u x u x u x u x

(1)

trong ( ), ( , ),x F x t 0 1( ), ( ),u x u x l cc hm s cho trc, cc n hm ,u P tho mt bi ton Cauchy

cho phng trnh vi phn thng sau

0

sin sin , 0 1, 0 ,

( ,0) ( ),

tP P u x t T

P x P x

(2)

trong 0( )P x l mt hm s cho trc. p dng phng php Galerkin lin kt vi phng php compact

yu, chng ti chng minh bi ton (1), (2) c duy nht nghim yu.

ON A LINEAR WAVE EQUATION ASSOCIATED WITH A CAUCHY PROBLEM FOR AN

ORDINARY DIFFERENTIAL EQUATION

Abstract

The report deals with the initial-boundary value problem for the linear wave equation

0 1

( ) ( , ), 0 1, 0 ,

(0, ) (1, ) 0,

( ,0) ( ), ( ,0) ( ),

tt xx tt

t

u u x P F x t x t T

u t u t

u x u x u x u x

(1)

where ( ), ( , ),x F x t 0 1( ), ( ),u x u x are given functions, the unknown functions ,u P satisfy the following

Cauchy problem for an ordinary differential equation

0

sin sin , 0 1, 0 ,

( ,0) ( ),

tP P u x t T

P x P x

(2)

where 0( )P x is given function. Applying the Galerkin method associated with the weak compact method, we

prove that the problem (1), (2) has a unique weak solution.

__________________________________


33

I-O-1.13

THUT GII LP CP CAO CHO MT PHNG TRNH SNG PHI TUYN

VI CC IU KIN BIN HN HP THUN NHT

Nguyn Th Tho Trc, Phm Gia Khnh

B mn Ton, Khoa S phm, i hc Cn Th

Tm tt

Chng ti xt phng trnh sng phi tuyn

0 1

( ) ( ), 0 1, 0 ,

(0, ) (0, ) (1, ) 0,

( ,0) ( ), ( .0) ( ),

tt xx t

x

t

u t u u f u x t T

u t hu t u t

u x u x u x u x

(1)

trong 0 1, , ,f u u l cc hm s cho trc v 0h l mt hng s cho trc. Trong bo co ny, chng

ti lin kt vi phng trnh (1)1 mt dy qui np { }mu xc nh bi

2 2 1( )

1 12 20

1( ) ( )( ) ,

!

Nk km m m

m m m

k

u u ut f u u u

t x t k

0 1, 0 ,x t T vi mu tha (1)2,3. S hng ban u 0u c chn l 0 0.u u Nu 1( )C v

( ),NC chng ti chng minh dy { }mu hi t cp N v nghim yu duy nht ca bi ton (1).

HIGH-ORDER ITERATIVE SCHEMES FOR A NONLINEAR WAVE EQUATION

ASSOCIATED WITH THE MIXED HOMOGENEOUS CONDITIONS

Abstract

We consider the following nonlinear wave equation

0 1

( ) ( ), 0 1, 0 ,

(0, ) (0, ) (1, ) 0,

( ,0) ( ), ( .0) ( ),

tt xx t

x

t

u t u u f u x t T

u t hu t u t

u x u x u x u x

(1)

where 0 1, , ,f u u are given functions and 0h is a given constant. In this report, we associate with Eq.

(1)1 a recurrent sequence { }mu defined by

2 2 1( )

1 12 20

1( ) ( )( ) ,

!

Nk km m m

m m m

k

u u ut f u u u

t x t k

0 1, 0 ,x t T with mu satisfying (1)2,3. The first term 0u is chosen as 0 0.u u If 1( )C and

( ),NC we prove that the sequence { }mu converges at a rate of order N to a unique weak solution of

the problem (1).

_______________________________


34

I-O-1.14

V MT PHNG TRNH NHIT PHI TUYN LIN KT VI

IU KIN BIN HN HP KHNG THUN NHT

Nguyn Vn (1), L Hu K Sn(1), Nguyn Hu Nhn(2)

(1) B mn Ton, Khoa Khoa hc c bn, i hc Cng nghip Thc phm TP. HCM

(2) B mn Ton, Khoa Khoa hc c bn, i hc ng Nai.

Tm tt

Bo co nghin cu mt phng trnh nhit phi tuyn lin kt vi cc iu kin Dirichlet - Robin.

Trc ht, chng ti dng phng php Feado - Galerkin v phng php compact chng minh s tn ti v

duy nht nghim. Sau , chng ti xt cc tnh cht ca nghim. Chng ti nhn c tnh b chn ca nghim

nu iu kin u b chn v cng nhn c dng iu tim cn ca nghim khi t+. Kt qu ny l mt tng

ha tng i trong [1].

ON A NONLINEAR HEAT EQUATION ASSOCIATED WITH

A MIXED INHOMOGENEOUS CONDITION

Abstract

This report is devoted to the study of a nonlinear heat equation associated with Dirichlet-Robin

conditions. At first, we use the Faedo - Galerkin and the compactness method to prove existence and uniqueness

results. Next, we consider the properties of solutions. We obtain that if the initial condition is bounded then so is

the solution and we also get asymptotic behavior of solutions as t+. This result is a relative generalization of

[1].

Reference.

[1] L. T. P. Ngoc, N. V. Y, Alain P. N. Dinh, N. T. Long, On a nonlinear heat equation associated with

Dirichlet Robin conditions, Numerical Functional Analysis and Optimization, 33 (2) (2012) 166 189.

http://dx.doi.org/10.1080/01630563.2011.594198

_______________________________


35

I-O-1.15

XP X TUYN TNH V KHAI TRIN TIM CN CA

NGHIM PHNG TRNH SNG CARRIER PHI TUYN

TRONG HNH VNH KHN VI IU KIN DIRICHLET

L Hu K Sn(1), Nguyn Tun Duy(2), Nguyn V Dzng(2), Nguyn Anh Trit(3)

(1) B mn Ton, Khoa Khoa hc c bn, i hc Cng nghip Thc phm TP. HCM.

(2) Khoa C bn, i hc Ti chnh v Marketing, TP. HCM.

(3) Khoa C Bn, i hc Kin trc thnh ph H Ch Minh.

Tm tt

Trong bo co cp mt phng trnh sng phi tuyn Carrier trong hnh vnh khn. S tn ti duy

nht ca mt nghim yu c chng minh bng phng php Faedo - Galerkin v phng php tuyn tnh ho

s hng phi tuyn. Ngoi ra, mt khai trin tim cn cp cao theo mt tham s b ca nghim cng c thit

lp.

LINEAR APPROXIMATIONS AND AN ASYMPTOTIC EXPANSION

OF SOLUTIONS FOR A NONLINEAR CARRIER WAVE EQUATION

IN THE ANNULAR WITH DIRICHLET CONDITIONS

Abstract

This report is devoted to the study of a nonlinear Carrier wave equation in the annular associated with

Dirichlet conditions. Existence and uniqueness of weak solutions are proved by using the Faedo - Galerkin

method and the linearization method for nonlinear terms. Furthermore, an asymptotic expansion of solutions of

high order in a small parameter is established.

____________________________


36

I-O-2.1

VI VN M V SNG LU NG CHO

CC M HNH TN X-KHUYCH TN

Mai c Thnh

B mn Ton, Trng H Quc t, HQG-HCM

Tm tt.

Trong bo co ny ti s a ra vi vn m lin quan n sng lu ng cho cc m hnh tn x-

khuuch tn. C th, xt phng trnh ng lc hc lu cht vi tc ng ca cc h s nht, mao dn v truyn

nhit

2

2

0,

,2

( ) ,2

t x

vt x x x xxx

x x

vt x x x x x x xx x

x x x

v u

u p u v vv

E up uu uv u v u v Tv v

(1)

trong x v 0.t y, , , , ,v S p T k hiu dung tch ring, entropy, p sut, ni nng, nhit ,

u l vn tc, v

22

2 2x

uE v

(2)

l tng nng lng. Cc i lng , , biu th nht, mao dn v s truyn nhit.

Mt h phng trnh vi phn thng phi tuyn s c thit lp i vi sng lu ng cho trc ca

m hnh (1). Bi ton c chuyn n nghin cu tnh n nh ca cc im cn bng ca h phng trnh vi

phn thu c trn. Cc vn m thch thc v tnh n nh ca cc im cn bng v s tn ti ca sng lu

ng s c nu ln.

SOME OPEN QUESTIONS ON TRAVELING WAVES

OF DIFFUSIVE-DISPERSIVE MODELS

Abstract.

In this talk I will present some open questions concerning traveling waves of diffusive-dispersive

models. Precisely, consider the fluid dynamics equations where viscosity, capillarity and heat conduction

coefficients are present:

2

2

0,

,2

( ) ,2

t x

vt x x x xxx

x x

vt x x x x x x xx x

x x x

v u

u p u v vv

E up uu uv u v u v Tv v

(1)

for x and 0.t Here, , , , ,v S p T denote the specific volume, entropy, pressure, internal energy,

temperature, respectively; u is the velocity, and

22

2 2x

uE v

(2)

37

is the total energy. The non-negative quantities , , represent the viscosity, capillarity, and the heat

conduction, respectively. In general, these quantities can be considered as functions of the thermodynamic

variables.

A system of ordinary nonlinear differential equations can be obtained for the traveling wave of the

diffusive-dispersive model (1). The problem is transformed to the one which studies the stability of the resulted

equilibria. Challenging open questions on the stability of these equilibria and the existence of the traveling waves

are addressed.

Main References

[1] M.D. Thanh, Global existence of traveling wave for general flux functions, Nonlinear Anal. T.M.A. 72

(2010) 231 - 239.

[2] M.D. Thanh, Attractor and traveling waves of a fluid with nonlinear diffusion and dispersion, Nonlinear

Anal. T.M.A. 72 (2010) 3136 -3149.

[3] M.D. Thanh, Existence of traveling waves in elastodynamics with variable viscosity and capillarity,

Nonlinear Anal. R.W.A. 12 (2011), 236-245.

[4] M.D. Thanh, Traveling waves of an elliptic-hyperbolic model of phase transitions via varying viscosity-

capillarity, J. Differential Equations, 251 (2011) 439 - 456.

[5] M.D. Thanh, Existence of traveling waves in compressible Euler equations with viscosity and capillarity,

Nonlinear Anal. T.M.A. 75 (2012), 4884 - 4895.

________________________________


38

I-O-2.2

VA CHM CA SOLITON QUANG HC CA

PHNG TRNH SCHRDINGER PHI TUYN

Nguyn Minh Qun

B mn Ton, Trng H Quc t, HQG-HCM

Tm tt

Chng ti nghin cu nh hng ca cc qu trnh nhiu phi tuyn ln nghim soliton ca phng trnh

Schrdinger phi tuyn (NLS) v cc qu trnh va chm gia cc soliton. Chng ti ch ra rng ng hc ca bin

soliton va chm trong ng quang dn silicon N knh di nh hng ca qu trnh suy hao nng lng bc ba

(cubic loss) c th c m t bi m hnh Lotka-Volterra ca N loi cnh tranh. Ngoi ra, chng ti ch ra iu

kin tn ti trng thi cn bng bin n nh ca cc dy soliton trong h thng quang dn nhiu knh di

tc ng ca qu trnh suy hao nng lng bc ba. Cc tnh ton l thuyt s c kim chng bng kt qu m

phng h phng trnh NLS tng ng. ng thi tc ng ca va chm nhiu soliton trong si quang dn cng

s c nghin cu. Kt qu ny c s cng tc vi A. Peleg, USA.

CROSS-TALK DYNAMICS OF OPTICAL SOLITONS IN

A MULTICHANNEL OPTICAL WAVEGUIDE

Abstract

We study the effects of weak cubic loss and septic on the dynamics of optical pulse parameters in a

multichannel optical waveguide. We obtain the analytic expressions for the amplitude and frequency shifts in a

single two-, three- and four-soliton collision. Furthermore, we show that amplitude dynamics in an N-channel

waveguide system is described by a Lotka-Volterra model for N competing species. The analytic predictions are

confirmed by numerical simulations with the couple nonlinear Schrdinger equations. These results uncover an

interesting analogy between the dynamics of energy exchange in pulse collisions and population dynamics in

Lotka-Volterra models. Joint work with A. Peleg.

_____________________________


39

I-O-2.3

PHNG PHP LAVRENTIEV GII BI TON

PHI TUYN T KHNG CHNH

Nguyn Vn Knh

Khoa Khoa hc c bn,

Trng i hc Cng nghip Thc phm thnh ph H Ch Minh

Tm tt

Bi bo ny trnh by phng php iu chnh Lavrentiev xy dng li nghim chnh xc 0x ca

phng trnh phi tuyn t khng chnh

0( ) ,F x y (1)

trong thay v c chnh xc 0y ta ch c xp x y X tho 0|| ||y y v :F X X l mt ton

t phi tuyn c tnh cht accretive t khng gian Banach thc phn x X vo chnh n. Theo phng php ny

nghim gn ng x ca (1) l nghim ca phng trnh phi tuyn nhiu k d

*( ) ( ) ,F x x x y

vi tin nghim *x no thuc .X Vi mt s gi nh v ton t F v tnh trn ca

*

0,x x ta nhn

c nh gi n nh hn na, ta cng nhn c nh gi vi bc ti u nu tham s iu chnh c chn theo mt quy tc ring.

LAVRENTIEV REGULARIZATION METHOD

FOR NONLINEAR ILL-POSED PROBLEMS

Abstract

In this paper we shall be concerned with Lavrentiev regularization method to reconstruct exact solution

0x of nonlinear ill-posed problems

0( ) ,F x y (1)

where instead of 0y noisy data y X with 0|| ||y y are given and :F X X is an accretive

nonlinear operator from a real reflex Banach space X into itself. In this regularization method solutions x of

(1) are obtained by solving the singularly perturbed nonlinear operator equation

*( ) ( ) ,F x x x y

with some initial guess * .x X Assuming certain conditions concerning the operator F and the smoothness

of the element *

0,x x we derive stability estimates which show that the accuracy of the regularized solutions

is order optimal provided that the regularization parameter has been chosen property.

_______________________________


40

I-O-2.4

V BI TON CAUCHY VI IU KIN KHNG A PHNG

CHO CC H IU KHIN M

Nguyn nh Ph, Ng Vn Ha

Khoa Ton - Tin hc, Trng H KHTN, HQG-HCM

Tm tt

Trong bi ny, chng ti trnh by cc tnh cht b chn v n nh ca cc nghim m cho bi ton

Cauchy vi iu kin khng a phng cho cc h iu khin m (Control Fuzzy Systems - FCSs) trong khng

gian metric Hausdorff. Nhng kt qu ny mi v nh l tng qut v ng dng v h m, vn c gio

s Lakshmikantham, V. and S. Leela cp n trong [3].

ON THE CAUCHY PROBLEM WITH NONLOCAL CONDITIONS

FOR FUZZY CONTROL SYSTEMS

Abstract

In this paper, we present the boundedness and stability properties of fuzzy solutions for Cauchy

Problems with Nonlocal Conditions of Control Fuzzy Systems (FCSs) under point of view of Hausdorff metric

space. The results are new and obtained are applied to study the Fuzzy Systems, which were investigated by

Professor Lakshmikantham, V. and S. Leela [3].

______________________________


41

I-O-2.5

MT VI KT QU CA PHNG TRNH VI PHN TP

VI TON T CAUSAL

Nguyn Ph Vinh

Trng Cao ng Y T Cn Th

Tm tt

Gn y, nghin cu thit lp phng trnh vi phn (SDE) trong mt khng gian metric semilinear

t c nhiu s ch . Trong phng trnh vi phn ny,n nh v trng thi ban u l khng rng, tp con

compact, li ca Rn.

Bo co ny gii thiu mt s kt qu v s n nh v tnh b chn ca phng trnh vi phn tp

(CSDEs) vi ton t causal

SOME RESULTS ON SET DIFFERENTIAL EQUATIONS

WITH CAUSAL OPERATOR

Abstract

Recently, the study of set differential equation (SDE) in a semilinear metric space has gained much

attention. In this differential equation, state and initial are nonempty, compact, convex subsets of Rn.

This report introduces some results on stability and boundedness of SDE with causal operators.

______________________________


42

I-O-2.6

N NH PRACTICAL V N NH LAGRANGE CHO H PHNG TRNH VI PHN

M C IU KHIN

H V, L Thanh Quang

Khoa K ton Kim ton, i hc Hng Vng

Tm tt

Trong bi bo ny, chng ti chng minh tnh n nh Practical v n nh Lagrange ca nghim h

phng trnh vi phn m c iu khin.

PRACTICAL STABILITY AND LAGRANGE STABILITY OF FUZZY CONTROL

DIFFERENTIAL EQUATIONS

Abstract

In this paper, we have investigated practical stability and Lagrange stability for fuzzy control

differential equations.

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43

I-O-2.7

V NGHIM CA PHNG TRNH VI TCH PHN VOLTERRA

GI TR KHONG DI MT VI KIU IU KHIN

Trng Vnh An, L c Thng

Khoa c bn, Trng H S phm K Thut Tp.HCM.

Tm tt

Trong bi bo ny, chng ti chng minh tnh cht tn ti v duy nht nghim cho Phng Trnh Vi

tch phn Volterra gi tr khong di mt vi kiu iu khin nh: iu khin chp nhn c, iu khin

ngc, iu khin co. Cui cng chng ti a ra mt vi v d cho m hnh ny.

ON THE SOLUTION FOR INTERVAL-VALUED VOLTERRA

INTEGRAL EQUATIONS UNDER SOME KINDS OF CONTROLS

Abstract

In this paper, we prove the existence and uniqueness theorem of a solution to the interval-valued

Volterra integral equations (IVIEs) under some kinds of control such as: admissible controls, feedback controls

and contraction controls. Finally, we give some examples for (IVIEs).

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44

I-O-2.8

HOCH NH VT T TN KHO C GII HN VN V MT BNG LU TR

Nguyn Ph Vinh(1), Phm Hng Danh(2)

(1) Khoa C bn, i hc Cng nghip thnh ph H Ch Minh

(2) Khoa Thng k-Ton, Trng i hc Kinh t TP. HCM.

Tm tt

Bi ton hoch nh vt t tn kho c gii hn vn v khng gian cha l bi ton c nhiu ng dng

trong kinh t. u tin chng ti pht biu bi ton v m hnh bi ton tm cc tr c hai rng buc l bt ng

thc, pht biu iu kin ti u Khun-Tucker cho bi ton, trnh by thut ton, sau l mt v d minh ha.

Vic gii lp tm nghim xp x c thc hin bng Microsoft Excel.

THE PLANNING OF LIMITED FUND AND STORE INVENTORY

Abstract

The problem of planning of limited fund and store inventory is a problem which is applied more to

economy. At first we state the problem, find optimal solution of the problem which is constrained by two

inequalities, state the Khun-Tucker optimal conditions, express algorithm. Afterward, the problem is a illustrated

by an example. Finally we use Microsoft excel to approximate the optimal solution of the problem.

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45

I-O-2.9

S TN TI NGHIM CA MT PHNG TRNH HM PHI TUYN

C GI TR TRONG KHNG GIAN BANACH TNG QUT

Hunh Th Hong Dung

Khoa C Bn, i hc Kin trc thnh ph H Ch Minh.

Tm tt

Chng ti xt mt phng trnh hm b nhiu di y

10 0

( ) , ( ( )), ( , , ( )) , ( , , ( )) ) ( ( )) ( ),x

f x x f R x V x s f s ds G x s f s ds bf S x g x (*)

vi mi [0,1],x trong E l mt khng gian Banach vi chun

| |, , : ,R S : ,g E 3: ,E E : ,V E E :G E E l cc hm lin

tc cho trc v :f E l n hm, {( , ) : },x s s x b l hng s thc cho trc, l

mt tham s b. S dng nh l im bt ng Banach, chng ti chng minh phng trnh (*) c nghim duy

nht. Cui cng, chng ti trnh by thut gii thit lp nghim xp x bi cc a thc ni suy Lagrange.

EXISTENCE OF SOLUTIONS FOR A NONLINEAR FUNCTIONAL EQUATION

WITH VALUES IN A GENERAL BANACH SPACE

Abstract

We consider the following perturbed a nonlinear functional equation

10 0

( ) , ( ( )), ( , , ( )) , ( , , ( )) ) ( ( )) ( ),x

f x x f R x V x s f s ds G x s f s ds bf S x g x (*)

for all [0,1],x where E is a Banach space with norm

| |, , : ,R S : ,g E 3: ,E E : ,V E E :G E E are the given

continuous functions and :f E is unknown function, {( , ) : },x s s x b is a given

constant, is a small parameter. By using the Banach fixed point theorem, we prove the equation (*) has a

unique solution. Finally, we present an algorithm to establish the approximate solution by the Lagrange

polynomial interpolation.

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46

I-O-3.1

NHN DNG BNG S XE VIT NAM BNG LOGIC M

Phm Th Bo, Bi Ngc Nam, H Vn Tn


Tm tt

Nhn dng bng s xe l mt k thut trong x l nh c dng xc nh bng s xe. u tin xc

nh vng bng s xe trong nh, ri trch cc k t trong vng ny v nhn dng. K thut ny c ng dng

nhiu trong bi gi xe, kim sot bin gii, chng trm v thi lut. Mc tiu ca bi bo l nghin cu tnh

cht bng s xe ti Vit Nam v xy dng h thng nhn dng bng s xe ca Vit nam. Chng ti s dng logic

m nhn dng cc k t.

RECOGNIZING VIETNAM LICENSE NUMBER USING FUZZY LOGIC

Abstract

License Plate Recognition (LPR) is an image-processing technology that is used to identify vehicles by

their license plates. A license plate reader works by extracting the characters from an image. This technology is

used for many applications such as toll booths, parking decks, border control, and law enforcement. The aim of

this research is design a license plate recognition system for Vietnam license number. They have developed

several algorithms for license plate recognition. We use fuzzy logic to recognize license number. According

Vietnam license plate features, we propose a method for license plate location and locations of characters of

license plate.

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47

I-O-3.2

GII THIU V RI RO TN DNG

Dng ng Xun Thnh, Ha Vy Ngc Anh


Tm tt

Trong bi ny, chng ti gii thiu tng qut v ri ro tn dng. Sau , mt s v d v Risk Metrics v

Credit Metrics s c xem xt.

INTRODUCTION TO CREDIT RISK

Abstract

In this paper we introduce generally about credit risk. Then, some examples about Risk Metrics and

Credit Metrics are given.

_______________________________


48

I-O-3.3

KHONG CCH TIP TUYN, KHONG CCH DA TRN HM MAX

V SAI S TRONG PHN LOI THNG K

Nguyn Ngc Khim(1), T Anh Dng(2)

(1)Trng Trung hc ph thng chuyn L T Trng, TP. Cn Th

(2)Khoa Ton - Tin hc, Trng H KHTN, HQG-HCM

Tm tt

Khong cch l nn tng ca bi ton phn loi thng k, v vy vic nh gi chng l vn rt thit

thc. Chng ti kho st sai s phn loi khi s dng khong cch tip tuyn v khong cch da trn hm max,

hai khong cch thng k c a ra gn y nht vi hai cch tip cn hon ton khc nhau, da trn kt qu

t chng trnh tnh ton trn d liu s c chng ti xy dng.

TANGENT DISTANCE, DISTANCE USING MAX FUNCTION

AND STATISTICAL CLSSIFICATION ERROR

Abstract

Distance is basis tool in statistical classification, so its evaluation is needed problem. We consider the

statistical classification error with tangent distance and distance based on the max function that proposed

recently and with different approaches, using the numberical result reseived from the program written by us.

______________________________


49

I-O-3.4

C LNG HN S DNG CA THUC

BNG M HNH HIU NG HN HP

Hong Vn H, Hong Anh Tun, Ng Minh Mn


Tm tt

Bi bo ny nghin cu v vn xc nh hn s dng ca thuc. y l mt vn quan trng c

cc cng ty sn xut thuc quan tm, v thuc qu hn s dng khng ch gim hoc mt tc dng iu tr m

cn c th gy hai n sc khe ca ngi s dng. Chng ti s dng m hnh hiu ng hn hp kt hp vi

phng trnh Arrhenius,phng trnh ny miu t mi quan h gia nhit v tc phn ng ha hc ca

thuc, c lng v d on tc phn r ca thuc theo thi gian v nhit bo qun. T , ta c th

c lng c hn s dng ca thuc.

ON ESTIMATING THE EXPIRY OF MEDICINES

USING MIXED-EFFECTS MODEL

Abstract

This paper studies the issue of determining the expiration date on medications. Many medical company

are interested in this important problem, because expired medical products can be less effective or possibly

harmful to medical users. We apply and combine mixed-effects model with Arrhenius equation which describe

the relation between temperature and rate of chemical reactions, in order to estimate and predict the

disintegration rate of medications by time and storage temperature. Thus, we can estimate the expiration date.

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50

I-O-3.5

V CC NH GI TRONG XP X POISSON QUA

MT KHONG CCH XC SUT DNG TROTTER

Trn Lc Hng


Tm tt

Mc ch chnh ca bi bo ny l thit lp cc nh gi trong xp x Poisson qua mt khong cch xc

sut dng Trotter. Nhng kt qu nhn c l s m rng cc kt qu c in trong xp x Poisson.

ON THE BOUNDS IN POISSON APPROXIMATION

VIA TROTTER TYPE DISTANCE

Abstract

The main aim of this note is to establish the bounds in Poisson Approximation via the Trotter-type

distance. The received results are extensions and generalizations from classical ones.

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51

I-O-3.6

PHN LOI BNG PHNG PHP BAYES V P DNG

V Vn Ti

Khoa Khoa hc T nhin, i hc Cn Th

Tm tt

Bi bo trnh by mt s kt qu l thuyt v sai lm trong phn loi bng phng php Bayes v

nhng ng dng ca phng php ny s dng cc chng trnh c vit trn phn mm Matlab vi s liu

thc t trong lnh y hc v ngn hng.

CLASSIFICATION BY BAYESIAN METHOD AND APPLICATIONS

Abstract

The article represents some results about mistake in classifying by Bayesian method and applications of

this method to real discrete data in medicine and bank using the programs which are established on the Matlab.

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52

I-O-3.7

NHM TUYN TNH TRN MIN NGUYN

Phm Th Nhn, Trn Ngc Hi


Tm tt

Bi vit m t cu trc ca dn cc nhm con trung gian ca nhm tuyn tnh tng qut GL(n,K) ng

thi cha nhm SL(n,R), trong R l mt min nguyn v K l trng cc thng ca n.

THE GENERAL LINEAR GROUPS OVER DOMAINS

Abstract

This article describes the lattice structure of intermediate subgroups of the general linear group GL(n,

K) that contain the group SL (n, R), where R is an integral domain and K is its field of quotients.

________________________________


53

I-O-3.8

NHM CON CA NHM TUYN TNH Y CHA NHM CON S CP TRN

VNH M RNG C HNG HU HN

Nguyn Hu Tr Nht, Trn Ngc Hi

Khoa Ton -Tin hc, i hc KHTN, HQG TP. HCM

Tm tt

Cho R l mt vnh giao hon v S l mt vnh m rng ca R ng thi l mt R-module t do c hng

m. Khi , thng qua biu din chnh qui, S c xem nh l mt vnh con ca vnh ma trn M(m, R), v do

GL(n, S) l mt nhm con ca nhm tuyn tnh y GL(mn, R). Trong nhng nm gn y, bi ton m t cc

nhm con ca nhm GL(mn, R) cha nhm con s cp E(n, S) c nhiu nh ton hc quan tm. Nm 1989,

Shang Zhi Li [1] gii bi ton trn cho trng hp R, S l cc trng. Trong bo co ny, chng ti kho st

bi ton trong trng hp tng qut hn, trong R, S l cc min nguyn. Chng ti chng minh c mt

s tnh cht ca cc nhm con trung gian, lm c s gii quyt bi ton mt cch trn vn.

SUBGROUPS OF THE FULL LINEAR GROUP CONTAINING

THE ELEMENTARY SUBGROUP OVER AN EXTENSION RING OF FINITE RANK

Nguyen Huu Tri Nhat, Tran Ngoc Hoi

Faculty of Mathematics and Computer Science, University of Science, VNU-HCMC

Abstract

Let R be a commutative ring and let S be an extension ring of R, which is a free R-module of rank m.

Then S is considered as a subring of the matrix ring M(m, R) via the regular representation, and so GL(n, S) is a

subgroup of the full linear group GL(mn, R). The problem of description of subgroups of GL(mn, R), which

contain the elementary subgroup E(n, S) attracts widespread attention in the recent years. In 1989, Shang Zhi Li

[1] solved the problem in the case of fields. In this report, we examine the problem in the more general case,

where R, S are integral domains. We established some properties of intermediate subgroups and obtained some

new results, which are fundamental to completely solve the problem.

REFERENCES

[1] Shang Zhi Li, Overgroups in GL(nr, F) of certain subgroups of SL(n, K), J. Algebra 125 (1989) 215 135.

[2] V. A. Koibaev, The normalizer of the automorphism group of a module arising under extension of the base

ring, Zap. Nauchn. Sem. S.-Peterburg. Otdel. Mat. Inst. Steklov (POMI), Vol. 211 (1994) 133 135.

_______________________________


54

I-O-3.9

V NHM CON CHUN TC TRONG NHM TUYN TNH TNG QUT

TRN VNH CHIA

Nguyn Vn Thn


Tm tt

Cho vnh chia D. Trong bo co ny chng ti kho st nhng nhm con chun tc ca GLn(D) vi n

1. Chng ti xc nh mt s iu kin mt nhm con nh vy nm trong tm GLn(D). Cc kt qu trn

l s tng qut ha ca mt s nh l giao hon trong vnh chia.

ON SUBNORMAL SUBGROUPS IN GENERAL SKEW LINEAR GROUPS

Abstract

Let D be a division ring. In this talk, we investigate subnormal subgroups of GLn(D) for n 1. We

determine some sufficient conditions under which such subgroups are central. Our obtained results can be

considered as generalizations of some previous commutativity theorems for division rings.

_______________________________


55

I-O-3.10

V TNH CN CA NHM CON TI I TRONG

NHM TUYN TNH TRN VNH CHIA

Trnh Thanh o


Tm tt

Trong bi bo co ny chng ti nghin cu cu trc ca nhm con ti i ca nhm tuyn tnh tng

qut GLn(D) tha mn iu kin cn trn tm ca D, vi D l vnh chia hu hn a phng yu. Mc ch

chnh ca chng ti l m rng mt s kt qu trc y i vi trng hp vnh chia hu hn tm.

ON RADICALITY OF MAXIMAL SUBGROUPS

IN SKEW LINEAR GROUPS

Abstract

In this talk we study the structure of maximal subgroups of GLn(D) that are radical over the center of

D, where D is a weakly locally finite division ring. Our main purpose is to extend some previous results for the

case of centrally finite division rings.

_________________________________


56

I-O-4.1

V BI TON NGC BOUSSINESQ

Trnh Anh Ngc


Tm tt

Trong bi ny, chng ti p dng phng php chnh ha Tykhonov cho bi ton ngc Boussinesq,

xc nh ti trng phn b trn b mt bn khng gian theo d kin v ln. Tnh khng chnh ca bi ton ban

u, s tn ti nghim n nh ca bi ton chnh ha, v s hi t ca n n nghim chnh xc (khi tham s

chnh ha dn v khng) c chng minh. Cc c lng sai s gia nghim chnh ha v nghim chnh xc

c cho trong trng hp d kin cho trc b nhiu. Cui cng, mt thut ton xp x bi ton chnh ha c

cho, v c p dng cho mt th d s vi mc ch minh ha.

ON THE BOUSSINESQS INVERSE PROBLEM

Abstract

In this article, we apply the method of Tykhonov regularization for the Boussinesqs inverse problem,

determined distributed load on surface of half-space by facts about the settlement. The ill-posed property of the

original problem, the existence of stable solution of the regularized problem, and its convergence to exact

solution (as regularization parameter tending to zero) are proven. The errors between stable solution and exact

solution for the case of noisy data are given. Finally, an approximation algorithm for the regularized problem is

given, and is applied to an example

tom tat cac bao cao khoa hoc

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