{"created":"2023-06-20T13:22:52.247530+00:00","id":3580,"links":{},"metadata":{"_buckets":{"deposit":"ec71ff87-5936-4656-a5df-6a5408a0b394"},"_deposit":{"created_by":21,"id":"3580","owners":[21],"pid":{"revision_id":0,"type":"depid","value":"3580"},"status":"published"},"_oai":{"id":"oai:ir.soken.ac.jp:00003580","sets":["2:428:14"]},"author_link":["1436","1438","1437"],"item_1_creator_2":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"河井, 裕"}],"nameIdentifiers":[{}]}]},"item_1_creator_3":{"attribute_name":"フリガナ","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"カワイ, ユタカ"}],"nameIdentifiers":[{}]}]},"item_1_date_granted_11":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2012-09-28"}]},"item_1_degree_grantor_5":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"総合研究大学院大学"}]}]},"item_1_degree_name_6":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士（工学）"}]},"item_1_description_12":{"attribute_name":"要旨","attribute_value_mlt":[{"subitem_description":"This research seeks to seamlessly support the infrastructure of distributed computing\r\nand storage through the development and study of a software-abstraction\r\nlayer that interfaces to multiple Grid middleware and to new Cloud environments.\r\nThrough this abstraction it is possible to sustain uninterrupted access to resources\r\nthat is robust to the dynamic nature of those resources (compute nodes may fail,\r\nstorage resources may go offline while a computation is being performed). We\r\nstudied the software-abstraction layer and provided our Universal Grid User Interface\r\n(UGI) architecture for multiple kinds of Grid and Cloud middleware to\r\nsupport end users and application engineers. UGI is implemented based on A\r\nSimple API for Grid Applications (SAGA) and provides supplemental and extended\r\nfunctions that are not included in SAGA.\r\nWe demonstrated that job submissions can be executed in the UGI-based user\r\nenvironment with different Grid resources. We provided and verified a simple way\r\nto execute the jobs based on High Energy and Nuclear Physics (HENP) libraries.\r\nFor file manipulation, we demonstrated that an application can access the different\r\nfile-system middleware in the Data Grids. The application enables to handle\r\npieces as completed files, even if a large file is cut up and the separated parts are\r\nstored on different Data Grids. We managed the files distributed in heterogeneous\r\nData Grids by using a catalog service. The example demonstrated that an application\r\ncan obtain the location information about the pieces of files distributed among\r\ndifferent kinds of Data Grids, and then access the distributed files.\r\nFor applied tools and applications, we demonstrated a method to reliably manage\r\nfiles with Resource Namespace Service (RNS), a UGI-based Web application\r\nfor Particle Therapy Simulation (PTSim), and an approach inspired by Ant Colony\r\nOptimization (ACO). Our method for reliably managing large files works on different\r\nkinds of Data Grids using RNS. The volume of digital data and the size of\r\nan individual file are increasing due to the introduction of high-resolution images,\r\nhigh-definition audiovisual files, etc. The reliable storage of such large files is becoming\r\nproblematic with whole file replication as a failure in the integrity of the\r\nfile is difficult to localize. Our method involves managing large files in Data Grids\r\nby splitting them into smaller units in a traceable manner and then managing the\r\nsmaller units. The RNS catalog service contains EPR (Endpoint Reference) and\r\nmetadata that describe the original locations as well as the checksum values. The\r\nexample we shows how our Grid application can retrieve the actual file locations\r\nand the checksum values from the RNS service.\r\nOur second tool is a UGI-based Web application for PTSim. PTSim is a simulation\r\nsystem for particle therapy. The application of particle physics to the\r\nmedical environment is one of the application areas that have a direct benefit to\r\nmankind. PTSim makes use of the Geant4 toolkit to simulate the passage of particles\r\nthrough the human body. It includes a Web interface that can be used by\r\nseveral collaborating medical particle therapy centers. The Web interface allows\r\na non-Grid environment to be easily ported to Grid to take advantage of the additional\r\nresources.\r\nOur last tool is for an approach inspired by swarm intelligence, ACO. Swarm\r\nintelligence is one of approaches to provide a fault tolerant and efficient means of\r\ntransferring data in a dynamic environment. Swarm intelligence is inspired primarily\r\nby observations of the collective behavior of social insects in addressing\r\ncomplex distributed problems. The basic idea is that each member of the swarm\r\nhas simple rules that govern its behavior, but the interaction among the members\r\nof the swarm can be used to tackle problems that are difficult to solve with complicated\r\nnumeric methods. We investigate the problem of data distribution among\r\na client and servers in a dynamic environment. We regard each download from a\r\nserver to the client as a single member in a swarm. The member’s behavior is simply\r\nto reliably download a data file. Each member can communicate with other\r\nmembers to allow the swarm to settle on the best set of servers to download the\r\ndata from based on the current status of the environment. ACO is one of Swarm\r\nintelligence methods. We created a simulator following the ACO based approach\r\nand showed that our approach works well, providing a fault tolerant and efficient\r\nmeans of transferring data in a dynamic environment.\r\nWe can utilize the computing and storage resources with our implementation\r\nand solution. The challenges of today’s researchers who need to collaborate with\r\ngeographically distributed colleagues with distributed computing and storage resources\r\ncan be overcome.","subitem_description_type":"Other"}]},"item_1_description_7":{"attribute_name":"学位記番号","attribute_value_mlt":[{"subitem_description":"総研大甲第1548号","subitem_description_type":"Other"}]},"item_1_select_14":{"attribute_name":"所蔵","attribute_value_mlt":[{"subitem_select_item":"有"}]},"item_1_select_8":{"attribute_name":"研究科","attribute_value_mlt":[{"subitem_select_item":"高エネルギー加速器科学研究科"}]},"item_1_select_9":{"attribute_name":"専攻","attribute_value_mlt":[{"subitem_select_item":"12 加速器科学専攻"}]},"item_1_text_10":{"attribute_name":"学位授与年度","attribute_value_mlt":[{"subitem_text_value":"2012"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"KAWAI, Yutaka","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-02-17"}],"displaytype":"simple","filename":"甲1548_要旨.pdf","filesize":[{"value":"278.8 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"要旨・審査要旨","url":"https://ir.soken.ac.jp/record/3580/files/甲1548_要旨.pdf"},"version_id":"e993b44d-dbfa-439b-bf61-ba6e8a2bce0f"},{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-02-17"}],"displaytype":"simple","filename":"甲1548_本文.pdf","filesize":[{"value":"3.8 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"本文","url":"https://ir.soken.ac.jp/record/3580/files/甲1548_本文.pdf"},"version_id":"080e87f1-cf6d-4eb1-bc56-58b9abc6139b"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"thesis","resourceuri":"http://purl.org/coar/resource_type/c_46ec"}]},"item_title":"A study in resource federation for e-Science","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"A study in resource federation for e-Science"},{"subitem_title":"A study in resource federation for e-Science","subitem_title_language":"en"}]},"item_type_id":"1","owner":"21","path":["14"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-06-10"},"publish_date":"2013-06-10","publish_status":"0","recid":"3580","relation_version_is_last":true,"title":["A study in resource federation for e-Science"],"weko_creator_id":"21","weko_shared_id":-1},"updated":"2023-06-20T15:28:50.688700+00:00"}