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入学希望の方 修了生の方 企業・研究者の方 教職員・学生 //--> Sitemap Access Japanese About GSISMessage from the DeanIntroduction to GSISGSIS guide bookOrganizationSNSJournal: Interdisciplinary Information SciencesContactsFacultyLaboratories by DepartmentComputer and Mathematical SciencesSystem Information SciencesHuman-Social Information SciencesApplied Information SciencesLaboratories by Specialized Subject GroupColaborative LaboratoriesPromotion OfficeAdmissionEntrance ExaminationCurriculum and Qualifications for ApplicationResearch StudentDormitoryFor StudentsSyllabus / Time table / Student HandbookNoticeInternational StudentsScholarshipDormitoryAdmission fee / Tuition fee waiverHandbook for International StudentsJapanese Language ProgramCounseling servicesEmergency InformationInternal Access Only Home Faculty Laboratories by Department Mathematical System Analysis I System Information Sciences Mathematical System Analysis I B01 Prof. Masaaki Harada     Assoc. Prof. Kei Funano     Assis. Prof. Junya Takahashi     Lab's Web page KeywordsCoding theory, Combinatorial design theory, Global Analysis, Homogenization theory Coding theory ／ Global Analysis and its applications (B01-1) Harada Laboratory studies coding theory, combinatorial design theory and related combinatorial structures.  Our major topic in coding theory is self-dual codes by a combinatorial approach.   Recently, linear complementary dual codes are studied.  We are also interested in related combinatorial structures and discrete structures. Combinatorial designs are one of combinatorial structures. Our major topics in combinatorial design theory are symmetric designs, t-designs and Hadamard matrices by a combinatorial approach. (B01-2) In Funano&＃39;s Laboratory we are developing and applying the study of eigenvalues and eigenfunctions of the Laplacian. This reseach is concerned with both analysis and geometry, such as curvature and volume, and also with mathematical physics. If we think our domain as a drum then we can ask how eigenfrequencies behave when we play the drum. We are also interested in a discrete setting. In that case it is related with a construction of robust, efficient, economical networks, trafic jams, and clustering. One of our goal is to apply our study for such daily life problems. Generator matrix of the extended Golay code What kind of tones can you hear from a drum? FacultyLaboratories by DepartmentComputer and Mathematical SciencesSystem Information SciencesHuman-Social Information SciencesApplied Information SciencesLaboratories by Specialized Subject GroupColaborative LaboratoriesPromotion Office GSIS: Graduate School of Information Sciences, Tohoku University 6-3-09 Aoba, Aramaki-aza Aoba-ku, Sendai, 980-8579, Japan Phone.+81-22-795-5813 Fax. +81-22-795-5815 Contacts is-www-admin,is.tohoku.ac.jp --> About GSIS Message from the DeanIntroduction to GSISGSIS guide bookOrganizationSNSJournal: Interdisciplinary Information SciencesContacts Faculty Laboratories by DepartmentComputer and Mathematical SciencesSystem Information SciencesHuman-Social Information SciencesApplied Information SciencesLaboratories by Specialized Subject GroupColaborative LaboratoriesPromotion Office Admission Entrance ExaminationCurriculum and Qualifications for ApplicationResearch StudentDormitory For Students Syllabus / Time table / Student HandbookNoticeInternational StudentsScholarshipDormitoryAdmission fee / Tuition fee waiverHandbook for International StudentsJapanese Language ProgramCounseling servicesEmergency InformationInternal Access Only About this Website Link © 2016 Graduate School of Information Sciences, Tohoku University About GSIS Message from the DeanIntroduction to GSISGSIS guide bookOrganizationSNSJournal: Interdisciplinary Information SciencesContacts Faculty Laboratories by DepartmentComputer and Mathematical SciencesSystem Information SciencesHuman-Social Information SciencesApplied Information SciencesLaboratories by Specialized Subject GroupColaborative LaboratoriesPromotion Office Admission Entrance ExaminationCurriculum and Qualifications for ApplicationResearch StudentDormitory For Students Syllabus / Time table / Student HandbookNoticeInternational StudentsScholarshipDormitoryAdmission fee / Tuition fee waiverHandbook for International StudentsJapanese Language ProgramCounseling servicesEmergency InformationInternal Access Only Sitemap Access Japanese no cache