Table Of ContentLecture Notes in Computer Science 4921
CommencedPublicationin1973
FoundingandFormerSeriesEditors:
GerhardGoos,JurisHartmanis,andJanvanLeeuwen
EditorialBoard
DavidHutchison
LancasterUniversity,UK
TakeoKanade
CarnegieMellonUniversity,Pittsburgh,PA,USA
JosefKittler
UniversityofSurrey,Guildford,UK
JonM.Kleinberg
CornellUniversity,Ithaca,NY,USA
AlfredKobsa
UniversityofCalifornia,Irvine,CA,USA
FriedemannMattern
ETHZurich,Switzerland
JohnC.Mitchell
StanfordUniversity,CA,USA
MoniNaor
WeizmannInstituteofScience,Rehovot,Israel
OscarNierstrasz
UniversityofBern,Switzerland
C.PanduRangan
IndianInstituteofTechnology,Madras,India
BernhardSteffen
UniversityofDortmund,Germany
MadhuSudan
MassachusettsInstituteofTechnology,MA,USA
DemetriTerzopoulos
UniversityofCalifornia,LosAngeles,CA,USA
DougTygar
UniversityofCalifornia,Berkeley,CA,USA
GerhardWeikum
Max-PlanckInstituteofComputerScience,Saarbruecken,Germany
Shin-ichi Nakano Md. Saidur Rahman (Eds.)
WALCOM:
Algorithms
and Computation
SecondInternationalWorkshop,WALCOM2008
Dhaka, Bangladesh, February 7-8, 2008
Proceedings
1 3
VolumeEditors
Shin-ichiNakano
GunmaUniversity
FacultyofEngineering
DepartmentofComputerScience,Gunma376-8515,Japan
E-mail:[email protected]
Md.SaidurRahman
BangladeshUniversityofEngineeringandTechnology(BUET)
DepartmentofComputerScienceandEngineering
Dhaka1000,Bangladesh
E-mail:[email protected]
LibraryofCongressControlNumber:2007943472
CRSubjectClassification(1998):F.2,C.2,G.2.2,I.3.5,G.1.6,J.3
LNCSSublibrary:SL1–TheoreticalComputerScienceandGeneralIssues
ISSN 0302-9743
ISBN-10 3-540-77890-XSpringerBerlinHeidelbergNewYork
ISBN-13 978-3-540-77890-5SpringerBerlinHeidelbergNewYork
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Preface
WALCOM2008,the 2nd Workshopon Algorithms andComputation,held dur-
ing February 7–8, 2008 in Dhaka, Bangladesh, covered the areas of algorithms
and data structures, combinatorial algorithms, graph drawings and graph algo-
rithms,parallelanddistributedalgorithms,stringalgorithms,computationalge-
ometry,graphs in bioinformatics and computationalbiology.The workshopwas
organized jointly by Bangladesh Academy of Sciences (BAS) and Bangladesh
UniversityofEngineeringandTechnology(BUET),andthequalityofthework-
shop was ensured by a Program Committee comprising researchers of interna-
tionalreputefromAustralia,Bangladesh,Canada,Germany,India,Italy,Japan,
Taiwan and UK.
The ProgramCommittee thoroughlyreviewedeachofthe 57submissionsfor
contributed talks and accepted 19 of them after elaborate discussions on review
reports.ThreeinvitedtalksbySatoshiFujita,AlejandroLopez-OrtizandRyuhei
Uehara were included in the workshop.
We thank the invited speakers for joining us and presenting their talks on
recent research areas of computer science from which researchers of this field
could benefit immensely. We thank the members of the Program Committee
andexternalreviewersfor their wonderfuljobin reviewingthe manuscripts.We
thanktheSteeringCommitteemembersKyung-YongChwa,CostasS.Iliopoulos,
M. Kaykobad, Petra Mutzel, Takao Nishizeki and C. Pandu Rangan for their
continuous encouragement. We also thank the Advisory Committee Members
M. Shamsher Ali, Naiyyum Choudhury and A.M.M. Safiullah for their inspir-
ing support to this workshop. We are indebted to M. Kaykobad for his all-out
support throughout the whole process. We thank Md. Shamsul Alam, Masud
Hasan and M.A. Mazed for their prompt organizational support. Members of
the OrganizingCommittee workedhardforthe successofthe workshop;wealso
thank them.
WewouldliketoacknowledgetheEasyChairsystem—afreeconferenceman-
agement system that is flexible, easy to use, and has many features to make it
suitable for various conference models. Finally, we thank our sponsors for their
assistance and support.
February 2008 Shin-ichi Nakano
Md. Saidur Rahman
WALCOM Organization
WALCOM Steering Committee
Kyung-Yong Chwa KAIST, Korea
Costas S. Iliopoulos KCL, UK
M. Kaykobad BUET, Bangladesh
Petra Mutzel University of Dortmund, Germany
Takao Nishizeki Tohoku University, Japan
C. Pandu Rangan IIT, Madras, India
WALCOM 2008 Committees
Advisory Committee
M. Shamsher Ali President, BAS
Naiyyum Choudhury Secretary, BAS
A.M.M. Safiullah Vice-Chancellor, BUET
Program Committee
Satoshi Fujita Hiroshima University, Japan
Stanley P.Y. Fung University of Leicester, UK
Michael Juenger University of Cologne, Germany
Subir Kumar Ghosh TIFR, India
Seok-Hee Hong NICTA, Australia
Giuseppe Liotta University of Perugia, Italy
Md. Abul Kashem BUET, Bangladesh
Naoki Katoh Kyoto University, Japan
Alejandro Lopez-Ortiz University of Waterloo, Canada
M. Manzur Murshed Monash University, Australia
Shin-ichi Nakano Gunma University, Japan (Co-chair)
Subhas Chandra Nandy Indian Statistical Institute, Kolkata,
India
Md. Saidur Rahman BUET, Bangladesh (Co-chair)
William F. Smyth McMaster University, Canada
Ryuhei Uehara JAIST, Japan
Sue Whiteside McGill University, Canada
Hsu-Chun Yen National Taiwan University, Taiwan
VIII Organization
Organizing Committee
Muhammad Abdullah Adnan
Md. Mostofa Akbar
Md. Ashraful Alam
S.M. Mahbub Alam
Md. Shamsul Alam (Chair)
Muhammad Masroor Ali
Tanveer Awal
A.M. Choudhury
Naiyyum Choudhury
S.M. Farhad
Md. Ehtesamul Haque
Masud Hasan (Secretary)
Mojahedul Hoque Abul Hasnat
Md. Shohrab Hossain
Anindya Iqbal
A.B.M. Alim Al Islam
Md. Mahfuzul Islam
Md. Humayun Kabir
Md. Rezaul Karim
M. Kaykobad
Ahmed Khurshid
M.A. Mazed
Momenul Islam Milton
Mahmuda Naznin
Md. Mostofa Ali Patwary
A.K.M. Ashikur Rahman
Md. Saidur Rahman
M. Sohel Rahman
Md. Muhibur Rasheed
Md. Abul Hassan Samee
Khaled Mahmud Shahriar
External Reviewers
Muhammad Abdullah Adnan
Reaz Ahmed
Toru Araki
Carla Binucci
Arijit Bishnu
Christoph Buchheim
Sandip Das
Emilio Di Giacomo
Walter Didimo
Birgit Engels
Organization IX
Fazle Elahi Faisal
Chun-I Fan
Sasthi C. Ghosh
Francesco Giordano
Luca Grilli
Carsten Gutwenger
Masud Hasan
Md. Rezaul Karim
Akinori Kawachi
Mohammad Kaykobad
Karsten Klein
Frauke Liers
A.K.M. Ashikur Rahman
Hsueh-I Lu
Hiroshi Nagamochi
Wolfgang Paul
Simon Puglisi
Muntasir Rahman
Md. Abul Hassan Samee
Michael Schulz
WF Smyth
Shin-ichi Tanigawa
Shi-Chun Tsai
Yushi UNO
Shu Wang
Roman Wienands
Tian-Li Yu
Munira Yusufu
X Organization
WALCOM 2008 Organizers
WALCOM 2008 Sponsors
Table of Contents
Invited Talks
Vertex Domination in Dynamic Networks ........................... 1
Satoshi Fujita
Closing the Gap Between Theory and Practice: New Measures for
On-Line Algorithm Analysis....................................... 13
Reza Dorrigiv and Alejandro Lo´pez-Ortiz
Simple Geometrical Intersection Graphs ............................ 25
Ryuhei Uehara
Bioinformatics Algorithms
On the Approximability of Comparing Genomes with Duplicates....... 34
S´ebastien Angibaud, Guillaume Fertin, and Irena Rusu
Indexing Circular Patterns ........................................ 46
Costas S. Iliopoulos and M. Sohel Rahman
A Fast Algorithm to Calculate Powers of a Boolean Matrix for
Diameter Computation of Random Graphs.......................... 58
Md. Abdur Razzaque, Choong Seon Hong,
M. Abdullah-Al-Wadud, and Oksam Chae
Computational Geometry and Graph Drawing
Cover Ratio of Absolute Neighbor.................................. 70
Kensuke Onishi and Mamoru Hoshi
Computing β-Drawings of 2-Outerplane Graphs in Linear Time........ 81
Md. Abul Hassan Samee, Mohammad Tanvir Irfan, and
Md. Saidur Rahman
Upward Drawings of Trees on the Minimum Number of Layers......... 88
Md. Jawaherul Alam, Md. Abul Hassan Samee,
Md. Mashfiqui Rabbi, and Md. Saidur Rahman
Guarding Exterior Region of a Simple Polygon ...................... 100
Arindam Karmakar, Sasanka Roy, and Sandip Das
Computing Nice Projections of Convex Polyhedra.................... 111
Md. Ashraful Alam and Masud Hasan