The progression in data capacity and difficulty inflicts great challenges for file systems. To address these contests, an inventive namespace management scheme is in distracted need to deliver both the ease and competence of data access. For scalability, each server makes only local, autonomous decisions about relocation for load balancing. Associative access is provided by a traditional extension to present tree-structured file system conventions, and by protocols that are intended specifically for content based access.Rapid attribute-based accesstofile system contents is fulfilled by instinctive extraction and indexing of key properties of file system objects. The programmed indexing of files and calendars is called “semantic” because user programmable transducers use data about the semantics of efficient file system objects to extract the properties for indexing. Tentative results from a semantic file system execution support the thesis that semantic file systems present a more active storage abstraction than do traditional tree planned file systems for data sharing and command level programming. Semantic file system is executed as a middleware in predictable file systems and works orthogonally with categorized directory trees. The semantic relationships and file groups recognized in file systems can also be used to facilitate file prefetching among other system-level optimizations. All-encompassing trace-driven experiments on our sample implementation validate the efficiency and competence.
An Efficient Approach to Manage Small Files in Distributed File SystemsIRJET Journal
This document proposes an efficient approach to manage small files in distributed file systems. It discusses challenges in storing and retrieving a large number of small files due to their metadata size. The proposed system aims to improve performance by designing a new metadata structure that decreases original metadata size and increases file access speed. It presents a system architecture with clients, metadata server and data servers. The system classifies files into different storage types and combines existing techniques into a single architecture. It provides algorithms for reading local metadata and file data in two phases. The performance of the approach is evaluated on a distributed file system environment.
Resist Dictionary Attacks Using Password Based Protocols For Authenticated Ke...IJERA Editor
A parallel file system is a type of distributed file system that distributes file data across multiple servers and
provides for concurrent access by multiple tasks of a parallel application. In many to many communications or
multiple tasks, key establishments are a major problem in parallel file system. So we propose a variety of
authenticated key exchange protocols that are designed to address the above issue. In this paper, we also study
the password-based protocols for authenticated key exchange (AKE) to resist dictionary attacks. Password-based
protocols for authenticated key exchange (AKE) are designed to work to resist the use of passwords drawn from
a space so small that attacker might well specify, off line, all possible passwords. While many such protocols
have been suggested, the elemental theory has been lagging. We commence by interpreting a model for this
problem, to approach password guessing, forward secrecy, server compromise, and loss of session keys.
This document describes Wise Store, a new model for organizing file metadata in large-scale distributed storage systems. Wise Store uses semantic grouping to organize metadata in a decentralized manner, constructing a semantic R-tree across storage units. This improves scalability and supports efficient composite queries like range, top-k, and search queries. Wise Store reduces query latency for these advanced metadata queries in systems with billions of files and exabytes of storage. It also enhances security using RSA encryption of metadata.
Ijaems apr-2016-7 An Enhanced Multi-layered Cryptosystem Based Secure and Aut...INFOGAIN PUBLICATION
Data de-duplication is one of the essential data compression techniques for eliminating duplicate copies of repeating data, and it has been widely used in cloud storage to reduce the amount of storage space and save bandwidth. To protect the privacy of sensitive data while supporting de-duplication, the salt encryption technique has been proposed to encrypt the data before its outsourcing. To protect the data security in a better way, this paper makes the first attempt to formally address the problem of authorized data de-duplication. Different from traditional de-duplication systems, the derivative privileges of users are further considered in duplicate check besides the data itself. We also present various new de-duplication constructions which supports the authorized duplicate check in hybrid cloud architecture. Security analysis demonstrates that the scheme which we used is secure in terms of the definitions specified in the proposed security model. We enhance our system in security. Specially, we present a forward-looking scheme to support a stronger security by encrypting file with differential privilege keys. We show that our proposed authorized duplicate check scheme incurs minimal overhead compared to normal operations.
Flevy.com - Feasibility Study for an eMail Archiving solutionDavid Tracy
This document provides an evaluation checklist for email archiving products. It lists over 100 features across categories like compatibility, storage, retrieval, performance, support, and more. Each feature is assigned a weight and the products are rated on a scale of 0-3 for each feature, with comments provided. The checklist aims to help evaluate and compare how different archiving products address the listed technical, operational, and compliance requirements.
IRJET- A Novel Approach to Process Small HDFS Files with Apache SparkIRJET Journal
This document proposes a novel approach to improve the efficiency of processing small files in the Hadoop Distributed File System (HDFS) using Apache Spark. It discusses how HDFS is optimized for large files but suffers from low efficiency when handling many small files. The proposed approach uses Spark to judge file sizes, merge small files to improve block utilization, and process the files in-memory for faster performance compared to the traditional MapReduce approach. Evaluation results show the Spark-based system reduces NameNode memory usage and improves processing speeds by up to 100 times compared to conventional Hadoop processing.
Data repositories -- Xiamen University 2012 06-08Jian Qin
The document discusses data repositories and services. It begins by defining what a data repository is, noting that it is a logical and sometimes physical partitioning of data where multiple databases reside. It then outlines some key aspects of data repositories, including technical features like standards, software, and staffing requirements. The document also discusses functions of repositories like content management, archiving, dissemination and system maintenance. It provides examples of institutional repositories and data repositories, highlighting characteristics of each. Finally, it provides a case study on Dryad, an international repository for data and publications in biosciences.
An Efficient Approach to Manage Small Files in Distributed File SystemsIRJET Journal
This document proposes an efficient approach to manage small files in distributed file systems. It discusses challenges in storing and retrieving a large number of small files due to their metadata size. The proposed system aims to improve performance by designing a new metadata structure that decreases original metadata size and increases file access speed. It presents a system architecture with clients, metadata server and data servers. The system classifies files into different storage types and combines existing techniques into a single architecture. It provides algorithms for reading local metadata and file data in two phases. The performance of the approach is evaluated on a distributed file system environment.
Resist Dictionary Attacks Using Password Based Protocols For Authenticated Ke...IJERA Editor
A parallel file system is a type of distributed file system that distributes file data across multiple servers and
provides for concurrent access by multiple tasks of a parallel application. In many to many communications or
multiple tasks, key establishments are a major problem in parallel file system. So we propose a variety of
authenticated key exchange protocols that are designed to address the above issue. In this paper, we also study
the password-based protocols for authenticated key exchange (AKE) to resist dictionary attacks. Password-based
protocols for authenticated key exchange (AKE) are designed to work to resist the use of passwords drawn from
a space so small that attacker might well specify, off line, all possible passwords. While many such protocols
have been suggested, the elemental theory has been lagging. We commence by interpreting a model for this
problem, to approach password guessing, forward secrecy, server compromise, and loss of session keys.
This document describes Wise Store, a new model for organizing file metadata in large-scale distributed storage systems. Wise Store uses semantic grouping to organize metadata in a decentralized manner, constructing a semantic R-tree across storage units. This improves scalability and supports efficient composite queries like range, top-k, and search queries. Wise Store reduces query latency for these advanced metadata queries in systems with billions of files and exabytes of storage. It also enhances security using RSA encryption of metadata.
Ijaems apr-2016-7 An Enhanced Multi-layered Cryptosystem Based Secure and Aut...INFOGAIN PUBLICATION
Data de-duplication is one of the essential data compression techniques for eliminating duplicate copies of repeating data, and it has been widely used in cloud storage to reduce the amount of storage space and save bandwidth. To protect the privacy of sensitive data while supporting de-duplication, the salt encryption technique has been proposed to encrypt the data before its outsourcing. To protect the data security in a better way, this paper makes the first attempt to formally address the problem of authorized data de-duplication. Different from traditional de-duplication systems, the derivative privileges of users are further considered in duplicate check besides the data itself. We also present various new de-duplication constructions which supports the authorized duplicate check in hybrid cloud architecture. Security analysis demonstrates that the scheme which we used is secure in terms of the definitions specified in the proposed security model. We enhance our system in security. Specially, we present a forward-looking scheme to support a stronger security by encrypting file with differential privilege keys. We show that our proposed authorized duplicate check scheme incurs minimal overhead compared to normal operations.
Flevy.com - Feasibility Study for an eMail Archiving solutionDavid Tracy
This document provides an evaluation checklist for email archiving products. It lists over 100 features across categories like compatibility, storage, retrieval, performance, support, and more. Each feature is assigned a weight and the products are rated on a scale of 0-3 for each feature, with comments provided. The checklist aims to help evaluate and compare how different archiving products address the listed technical, operational, and compliance requirements.
IRJET- A Novel Approach to Process Small HDFS Files with Apache SparkIRJET Journal
This document proposes a novel approach to improve the efficiency of processing small files in the Hadoop Distributed File System (HDFS) using Apache Spark. It discusses how HDFS is optimized for large files but suffers from low efficiency when handling many small files. The proposed approach uses Spark to judge file sizes, merge small files to improve block utilization, and process the files in-memory for faster performance compared to the traditional MapReduce approach. Evaluation results show the Spark-based system reduces NameNode memory usage and improves processing speeds by up to 100 times compared to conventional Hadoop processing.
Data repositories -- Xiamen University 2012 06-08Jian Qin
The document discusses data repositories and services. It begins by defining what a data repository is, noting that it is a logical and sometimes physical partitioning of data where multiple databases reside. It then outlines some key aspects of data repositories, including technical features like standards, software, and staffing requirements. The document also discusses functions of repositories like content management, archiving, dissemination and system maintenance. It provides examples of institutional repositories and data repositories, highlighting characteristics of each. Finally, it provides a case study on Dryad, an international repository for data and publications in biosciences.
The document proposes creating a digital library at Anonymous University using the Dublin Core metadata standard and Greenstone digital library software. It recommends training library staff on Dublin Core, the controlled vocabularies LCNAF and DCT, and assigning roles for the project such as project manager, digital manager, curator, and digitization staff. It also outlines plans for metadata elements, training procedures, collection assessment, and ensuring quality control of the digital library materials and records.
Applications of xml, semantic web or linked data in Library/Information Servi...Nurhazman Abdul Aziz
Applications of XML, Semantic Web & Linked Data in Library/Information Services & Skills needed by System Librarians.
H6716 (Internet & Web Technologies) & K6224 (Internet Technologies & Applications)
Semester 2 – 2011/2012
Hazman Aziz, Librarian (Library Technology & Systems)
Amirrudin Dahlan, Senior IT Specialist (Center for IT & Services)
Nanyang Technological University
1. The document presents the results of an empirical study evaluating the performance of various file systems on non-volatile memory (NVM) simulated using ramdisk.
2. The study finds that while default configurations of legacy file systems are sub-optimal for NVM, these file systems can achieve comparable performance to the NVM-optimized PMFS file system when tuned using mount and format options.
3. Key findings include that in-place update layout performs better than log-structured layout on NVM, and enabling execute-in-place to bypass the buffer cache provides a significant performance boost for legacy file systems.
This document proposes a framework called ALADIN for data management in mobile ad hoc networks (MANETs). It utilizes cross-layer communication, multi-level ontologies, and relationships between data items. ALADIN includes components for data discovery, representation, caching, and consistency management. It exploits data correlations computed from usage logs to improve discovery and caching. Evaluation shows ALADIN reduces latency and increases hit ratio compared to existing solutions. The framework represents a comprehensive approach for MANET data management.
IRJET- Secure File Sharing and Retrieval using Fog NodesIRJET Journal
This document discusses secure file sharing and retrieval using fog nodes. It proposes using fog nodes to securely store, share, and retrieve files in personal area networks (PANs) consisting of wearable devices. Fog nodes have more storage and processing capabilities than wearable devices. The system uses secret sharing to split files into shares that are distributed across fog nodes. At least r shares are needed to reconstruct the original file. It also uses proxy re-encryption to improve security and privacy during file sharing, without revealing the actual secret key. This allows authorized devices to decrypt re-encrypted files through the proxy. The goal is to securely manage device resources and files in the PAN while improving confidentiality, integrity and availability.
INTELLIGENT AND PERVASIVE ARCHIVING FRAMEWORK TO ENHANCE THE USABILITY OF THE...csandit
The cloud storage-based zero client technology gains companies’ interest because of its
capabilities in secured and economic management of information resources. As the use of
personal smart devices such as smart phones and pads in business increases, to cope with
insufficient workability caused by limited size and computing capacity most of smart devices
have, the necessity to apply the zero-client technology is being highlighted. However, from the
viewpoint of usability, users point out a very serious problem in using cloud storage-based zero
client system: difficulty in deciding and locating a proper directory to store documents. This
paper proposes a method to enhance the usability of a zero-client-based cloud storage system
by intelligently and pervasively archiving working documents according to automatically
identified topic. Without user’s direct definition of directory to store the document, the proposed
ideas enable the documents to be automatically archived into the predefined directories. Based
on the proposed ideas, more effective and efficient management of electronic documents can be
achieved.
The document provides an overview of the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). It defines key terms, discusses the history and development of the protocol, and describes how the protocol works to allow systems to harvest metadata from multiple repositories and enable federated searching across datasets. The OAI-PMH was developed to address the need for a standardized protocol to facilitate the sharing and aggregation of scholarly works and research across open archives and repositories on the web.
A Framework for Content Preparation to Support Open-Corpus Adaptive HypermediaKillian Levacher
This document proposes a framework for preparing open-corpus content to support adaptive hypermedia systems. The framework includes three components: 1) structural analysis to segment web pages and remove redundant information, 2) statistical analysis to extract concepts using techniques like hidden Markov models, and 3) intelligent slicing to fulfill specific information requests from adaptive systems by retrieving and tailoring open-corpus content. The goal is to leverage existing open web content for adaptive systems by automatically preparing and enriching content with metadata in a format agnostic to any specific system.
Integrated research data management in the Structural SciencesManjulaPatel
A presentation given by Manjula Patel (UKOLN, University of Bath) at the I2S2 workshop "Scaling Up to Integrated Research Data Management", IDCC 2010, 6th December 2010, Chicago.
http://www.ukoln.ac.uk/projects/I2S2/events/IDCC-2010-ScalingUp-Wksp/
This document discusses the challenges of collecting, storing, and analyzing large volumes of internet measurement data. It examines issues such as distributed and resilient data collection, handling multi-timescale and heterogeneous data from various sources, and developing standardized tools and formats. The paper proposes the "datapository" - an internet data repository designed to address these challenges through a collaborative framework for data sharing, storage, and analysis tools. The goal is to help both network operators and researchers more effectively harness the wealth of data available.
This poster (or slides) describes the main concepts which relate data format (HDF5), metadata, and data organization, as they are being applied to NPOESS. It includes the motivation for selecting HDF5; the motivation and general implementation of FGDC base metadata and remote sensing extensions; and the current attempt to use best experiences with HDF-EOS swath and netCDF Climate & Forecast conventions to guide NPOESS product definition.
Textual based retrieval system with bloom in unstructured Peer-to-Peer networksUvaraj Shan
This document summarizes a research article about a textual retrieval system using Bloom filters in unstructured peer-to-peer networks. It discusses how Bloom Cast replicates document content across the network using Bloom filters to encode documents. This allows for efficient full-text searches with guaranteed recall rates while reducing communication costs compared to replicating raw documents. The system samples nodes randomly using a lightweight distributed hash table to support searches in an unstructured P2P network where the network size is unknown.
This document presents an authorized duplicate check scheme for deduplication in a hybrid cloud storage system. It discusses issues with traditional deduplication and encryption techniques, and proposes a system that uses convergent encryption and generates hash values of files to enable authorized duplicate checking while maintaining data security and confidentiality. The system architecture involves users uploading encrypted files, generating hash values for duplicate checking, and downloading referenced root files if duplicates are found. This allows storage space savings while protecting data through multiple authentication levels and encryption. Evaluation shows the scheme incurs minimal overhead compared to normal cloud storage operations.
Hitachi Data Systems provides storage solutions to help life sciences organizations address challenges from rapidly growing data volumes. Their solutions offer automated data migration between storage tiers to optimize storage utilization and improve computational workflow performance. Long-term data management needs are met through integrated archiving functionality allowing long-term retention of data as required by regulations.
The document describes the design and implementation of a relational database management system called InfoBASE. It includes sections on the introduction, software requirements, high level design, low level design, testing, and conclusion. The high level design shows the system architecture with data files, index files, database management software, and application software. The low level design lists the important functions that form the DBMS library.
A Stochastic Model by the Fourier Transform of Pde for the Glp - 1IJERA Editor
The peptide hormone glucagon like peptide GLP -1 has most important actions resulting in glucose lowering
along with weight loss in patients with type 2 diabetes. As a peptide hormone, GLP -1 has to be administered by
injection. A few small-molecule agonists to peptide hormone receptors have been described.
Here we develop a model for credit risk based on a model with stochastic eigen values called principal
component stochastic covariance.
The document discusses using Haar wavelets to solve optimal control problems numerically. It begins by explaining the limitations of indirect methods for solving optimal control problems and advantages of direct methods. It then provides background on wavelet theory, describing different types of wavelets and their properties. Haar wavelets are discussed as being useful for solving variational problems by reducing differential equations to algebraic equations. The document concludes that the Haar wavelet approach provides an effective numerical method for solving variational and optimal control problems compared to other existing techniques.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
The document proposes creating a digital library at Anonymous University using the Dublin Core metadata standard and Greenstone digital library software. It recommends training library staff on Dublin Core, the controlled vocabularies LCNAF and DCT, and assigning roles for the project such as project manager, digital manager, curator, and digitization staff. It also outlines plans for metadata elements, training procedures, collection assessment, and ensuring quality control of the digital library materials and records.
Applications of xml, semantic web or linked data in Library/Information Servi...Nurhazman Abdul Aziz
Applications of XML, Semantic Web & Linked Data in Library/Information Services & Skills needed by System Librarians.
H6716 (Internet & Web Technologies) & K6224 (Internet Technologies & Applications)
Semester 2 – 2011/2012
Hazman Aziz, Librarian (Library Technology & Systems)
Amirrudin Dahlan, Senior IT Specialist (Center for IT & Services)
Nanyang Technological University
1. The document presents the results of an empirical study evaluating the performance of various file systems on non-volatile memory (NVM) simulated using ramdisk.
2. The study finds that while default configurations of legacy file systems are sub-optimal for NVM, these file systems can achieve comparable performance to the NVM-optimized PMFS file system when tuned using mount and format options.
3. Key findings include that in-place update layout performs better than log-structured layout on NVM, and enabling execute-in-place to bypass the buffer cache provides a significant performance boost for legacy file systems.
This document proposes a framework called ALADIN for data management in mobile ad hoc networks (MANETs). It utilizes cross-layer communication, multi-level ontologies, and relationships between data items. ALADIN includes components for data discovery, representation, caching, and consistency management. It exploits data correlations computed from usage logs to improve discovery and caching. Evaluation shows ALADIN reduces latency and increases hit ratio compared to existing solutions. The framework represents a comprehensive approach for MANET data management.
IRJET- Secure File Sharing and Retrieval using Fog NodesIRJET Journal
This document discusses secure file sharing and retrieval using fog nodes. It proposes using fog nodes to securely store, share, and retrieve files in personal area networks (PANs) consisting of wearable devices. Fog nodes have more storage and processing capabilities than wearable devices. The system uses secret sharing to split files into shares that are distributed across fog nodes. At least r shares are needed to reconstruct the original file. It also uses proxy re-encryption to improve security and privacy during file sharing, without revealing the actual secret key. This allows authorized devices to decrypt re-encrypted files through the proxy. The goal is to securely manage device resources and files in the PAN while improving confidentiality, integrity and availability.
INTELLIGENT AND PERVASIVE ARCHIVING FRAMEWORK TO ENHANCE THE USABILITY OF THE...csandit
The cloud storage-based zero client technology gains companies’ interest because of its
capabilities in secured and economic management of information resources. As the use of
personal smart devices such as smart phones and pads in business increases, to cope with
insufficient workability caused by limited size and computing capacity most of smart devices
have, the necessity to apply the zero-client technology is being highlighted. However, from the
viewpoint of usability, users point out a very serious problem in using cloud storage-based zero
client system: difficulty in deciding and locating a proper directory to store documents. This
paper proposes a method to enhance the usability of a zero-client-based cloud storage system
by intelligently and pervasively archiving working documents according to automatically
identified topic. Without user’s direct definition of directory to store the document, the proposed
ideas enable the documents to be automatically archived into the predefined directories. Based
on the proposed ideas, more effective and efficient management of electronic documents can be
achieved.
The document provides an overview of the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). It defines key terms, discusses the history and development of the protocol, and describes how the protocol works to allow systems to harvest metadata from multiple repositories and enable federated searching across datasets. The OAI-PMH was developed to address the need for a standardized protocol to facilitate the sharing and aggregation of scholarly works and research across open archives and repositories on the web.
A Framework for Content Preparation to Support Open-Corpus Adaptive HypermediaKillian Levacher
This document proposes a framework for preparing open-corpus content to support adaptive hypermedia systems. The framework includes three components: 1) structural analysis to segment web pages and remove redundant information, 2) statistical analysis to extract concepts using techniques like hidden Markov models, and 3) intelligent slicing to fulfill specific information requests from adaptive systems by retrieving and tailoring open-corpus content. The goal is to leverage existing open web content for adaptive systems by automatically preparing and enriching content with metadata in a format agnostic to any specific system.
Integrated research data management in the Structural SciencesManjulaPatel
A presentation given by Manjula Patel (UKOLN, University of Bath) at the I2S2 workshop "Scaling Up to Integrated Research Data Management", IDCC 2010, 6th December 2010, Chicago.
http://www.ukoln.ac.uk/projects/I2S2/events/IDCC-2010-ScalingUp-Wksp/
This document discusses the challenges of collecting, storing, and analyzing large volumes of internet measurement data. It examines issues such as distributed and resilient data collection, handling multi-timescale and heterogeneous data from various sources, and developing standardized tools and formats. The paper proposes the "datapository" - an internet data repository designed to address these challenges through a collaborative framework for data sharing, storage, and analysis tools. The goal is to help both network operators and researchers more effectively harness the wealth of data available.
This poster (or slides) describes the main concepts which relate data format (HDF5), metadata, and data organization, as they are being applied to NPOESS. It includes the motivation for selecting HDF5; the motivation and general implementation of FGDC base metadata and remote sensing extensions; and the current attempt to use best experiences with HDF-EOS swath and netCDF Climate & Forecast conventions to guide NPOESS product definition.
Textual based retrieval system with bloom in unstructured Peer-to-Peer networksUvaraj Shan
This document summarizes a research article about a textual retrieval system using Bloom filters in unstructured peer-to-peer networks. It discusses how Bloom Cast replicates document content across the network using Bloom filters to encode documents. This allows for efficient full-text searches with guaranteed recall rates while reducing communication costs compared to replicating raw documents. The system samples nodes randomly using a lightweight distributed hash table to support searches in an unstructured P2P network where the network size is unknown.
This document presents an authorized duplicate check scheme for deduplication in a hybrid cloud storage system. It discusses issues with traditional deduplication and encryption techniques, and proposes a system that uses convergent encryption and generates hash values of files to enable authorized duplicate checking while maintaining data security and confidentiality. The system architecture involves users uploading encrypted files, generating hash values for duplicate checking, and downloading referenced root files if duplicates are found. This allows storage space savings while protecting data through multiple authentication levels and encryption. Evaluation shows the scheme incurs minimal overhead compared to normal cloud storage operations.
Hitachi Data Systems provides storage solutions to help life sciences organizations address challenges from rapidly growing data volumes. Their solutions offer automated data migration between storage tiers to optimize storage utilization and improve computational workflow performance. Long-term data management needs are met through integrated archiving functionality allowing long-term retention of data as required by regulations.
The document describes the design and implementation of a relational database management system called InfoBASE. It includes sections on the introduction, software requirements, high level design, low level design, testing, and conclusion. The high level design shows the system architecture with data files, index files, database management software, and application software. The low level design lists the important functions that form the DBMS library.
A Stochastic Model by the Fourier Transform of Pde for the Glp - 1IJERA Editor
The peptide hormone glucagon like peptide GLP -1 has most important actions resulting in glucose lowering
along with weight loss in patients with type 2 diabetes. As a peptide hormone, GLP -1 has to be administered by
injection. A few small-molecule agonists to peptide hormone receptors have been described.
Here we develop a model for credit risk based on a model with stochastic eigen values called principal
component stochastic covariance.
The document discusses using Haar wavelets to solve optimal control problems numerically. It begins by explaining the limitations of indirect methods for solving optimal control problems and advantages of direct methods. It then provides background on wavelet theory, describing different types of wavelets and their properties. Haar wavelets are discussed as being useful for solving variational problems by reducing differential equations to algebraic equations. The document concludes that the Haar wavelet approach provides an effective numerical method for solving variational and optimal control problems compared to other existing techniques.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Development of metallic rack packages for the metallurgical industry: Case StudyIJERA Editor
This document summarizes a study on the development of metallic rack packages for machine components in the metallurgical industry. The study aimed to improve transportation and storage by replacing wooden pallets. Metallic racks were designed to securely hold components, ensure quality during transport, and allow for easy loading and unloading. The methodology involved recognizing problems, detailing components, designing racks, testing, and approving the racks. Results showed the metallic racks reduced investments in packaging by over 50% compared to wooden pallets, saving almost $2,000 per year. Projects currently in development include racks for machine wheels and loader fenders. The metallic racks were concluded to add value and reduce costs in the production process.
This document describes the development of an air hockey game application for Android using the Native Development Kit (NDK). It discusses defining the structure of the air hockey table using vertices, building the table geometry, mapping colors, adding textures, touch interaction, and collision detection. The goal is to create a basic 3D air hockey game that demonstrates graphics capabilities when programming for Android with C/C++ code via the NDK. It also proposes areas for future extension, such as adding physics engines and artificial intelligence. The document serves as a case study for how to build a simple 3D game application with native code on the Android platform.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
MoO3 Nanoparticles: Synthesis, Characterization and Its Hindering Effect on G...IJERA Editor
Molybdenum trioxide nanoparticles have been synthesized by sol-gel method. The X-ray diffraction analysis was done to confirm that the obtained product was MoO3. The scanning electron microscopy was done to study the shape, size distribution and surface morphology of nanoparticles; they had a hexagonal shape with smooth surface and uniform size distribution. The functional groups were studied using Fourier transform infrared spectroscopy. The effect of MoO3 nanoparticles on seed germination of vigna unguiculata was studied for 6 days from the day of sowing, by comparing the time taken for seeds to germinate and length of shoot with respect to time of the seeds sowed in heavy black soil whose nutrient composition was known with seeds sowed in the same heavy black soil but which was made rich with MoO3 nanoparticles. It was observed that the MoO3 nanoparticles hampered the germination of vigna unguiculata seeds and this restraint continued in the shoot growth also.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Kernel Estimation of Videodeblurringalgorithm and Motion Compensation of Resi...IJERA Editor
This paper presents a videodeblurring algorithm utilizing the high resolution information of adjacent unblurredframes.First, two motion-compensated predictors of a blurred frame are derived from its neighboring unblurred frames via bidirectional motion compensation. Then, an accurate blur kernel, which is difficult to directly obtain from the blurred frame itself, is computed between the predictors and the blurred frame. Next, a residual deconvolution is employed to reduce the ringing artifacts inherently caused by conventional deconvolution. The blur kernel estimation and deconvolution processes are iteratively performed for the deblurred frame. Experimental results show that the proposed algorithm provides sharper details and smaller artifacts than the state-of-the-art algorithms.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
An Overview of Separation Axioms by Nearly Open Sets in Topology.IJERA Editor
Abstract: The aim of this paper is to exhibit the research on separation axioms in terms of nearly open sets viz
p-open, s-open, α-open & β-open sets. It contains the topological property carried by respective ℘ -Tk spaces (℘
= p, s, α & β; k = 0,1,2) under the suitable nearly open mappings . This paper also projects ℘ -R0 & ℘ -R1
spaces where ℘ = p, s, α & β and related properties at a glance. In general, the ℘ -symmetry of a topological
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Dynamic Metadata Management in Semantic File Systems
1. M. Suguna Int. Journal of Engineering Research and Applications www.ijera.com
ISSN : 2248-9622, Vol. 5, Issue 3, ( Part -5) March 2015, pp.44-47
www.ijera.com 44 | P a g e
Dynamic Metadata Management in Semantic File Systems
M. Suguna1
, T. Anand2
1
P.G Student& A.V.C College of Engineering, Mayiladuthurai, Tamil Nadu.
2
Professor & A.V.C College of Engineering, Mayiladuthurai, Tamil Nadu.
ABSTRACT
The progression in data capacity and difficulty inflicts great challenges for file systems. To address these
contests, an inventive namespace management scheme is in distracted need to deliver both the ease and
competence of data access. For scalability, each server makes only local, autonomous decisions about relocation
for load balancing. Associative access is provided by a traditional extension to present tree-structured file
system conventions, and by protocols that are intended specifically for content based access.Rapid attribute-
based accesstofile system contents is fulfilled by instinctive extraction and indexing of key properties of file
system objects. The programmed indexing of files and calendars is called “semantic” because user
programmable transducers use data about the semantics of efficient file system objects to extract the properties
for indexing. Tentative results from a semantic file system execution support the thesis that semantic file
systems present a more active storage abstraction than do traditional tree planned file systems for data sharing
and command level programming. Semantic file system is executed as a middleware in predictable file systems
and works orthogonally with categorized directory trees. The semantic relationships and file groups recognized
in file systems can also be used to facilitate file prefetching among other system-level optimizations. All-
encompassing trace-driven experiments on our sample implementation validate the efficiency and competence.
Key Terms—File systems, mete data, namespace management , semantic awareness, storage systems
I. INTRODUCTION
Profligate and flexible metadata recovering is
critical in the next cohort data storage systems. As
the storage capacity is approaching Exabyte and the
number of files stored is getting billions, directory-
tree based metadata organization widely arranged in
conventional file systems can no longer meet the
requirements of scalability and functionality.Many
systems are required to achieve hundreds of
thousands of metadata actions per second and
theperformance is strictly controlled by the
categorized directory-tree based metadata
organization system used in nearly all file systems
today. File system namespace as an information-
organizing infrastructure is important to system’s
quality of service such as presentation, scalability,
and comfort of use. Almost all recent file systems are
based on categorized directory trees.
A semantic file system delivers both a user line
and an submission programming boundary to its
associative access services. User boundaries based
upon browsers have verified to be operative for query
founded access to data, and we expect browsers to be
presented by most semantic file system executions.
Presentation programming lines that license remote
access include dedicated protocols for information
recovery, and remote technique call based
boundaries.
It is also potential to spread the services of a
semantic file system without presenting any new
boundaries. This can be skilled by covering the
naming semantics of files and manuals to support
associative access. A profit of this approach is that all
present submissions, including user interfaces,
instantly get the benefits of associative access. A
semantic file system participates associative accees
into a tree controlled file system through the concept
of a simulated directory. Simulated directory names
are construed as queries and thus deliver flexible
associative access to files and directories in a custom
well-matched with present software.
II. RELATED WORK
It is worth noting that the vital difference from
current work is its even, rather than classified,
namespace for data-intensive file systems. Semantic
file system is one of the first file systems that spread
the traditional file system orders by permitting users
to search modified file attributes. SFS creates
simulated directories based on demand. quFiles
provides a simple and combined view of different
copies of files that are enhanced for different contact
settings, such as network bandwidth. It uses a new
method that achievements semantic relationships
among files to create a vigorous per-file namespace
to speed up file lookups when full pathnames are not
offered. This approach differs from SFS and quFiles
in that we take into attention the semantic context
obliquely and unambiguously signified in file
metadata when allocation complex queries.
RESEARCH ARTICLE OPEN ACCESS
2. M. Suguna Int. Journal of Engineering Research and Applications www.ijera.com
ISSN : 2248-9622, Vol. 5, Issue 3, ( Part -5) March 2015, pp.44-47
www.ijera.com 45 | P a g e
In order to holder the scalability difficult of file
system directories, GIGA+ proposed a POSIX-
compliant accessible directory scheme to efficiently
support hundreds of thousands of simultaneous
changes per second, in particular in terms of file
designs. An extendible hashing-based technique is
used to dynamically barrier each directory to support
metadata organisation for a trillion files. Moreover,
with a goal to scale metadata quantity with the
calculation of metadata servers, the Ursa Minor
distributed packing system switches metadata
operations on things stored in altered metadata
servers by commonly and atomically apprising these
items. Active subtree barrier offers adaptive
management for ordered metadata capacities that
evolve over time. Here focus is not on how to store a
large number of files. Instead, aim to plan a new
attitude that helps rapidly find target files in a file
system with possibly billions or trillions of files.
III. PROBLEM DEFINITION
In the next-generation file systems, metadata
contacts will very possible become a severe act
blockage as metadata-based communications not only
account for over 50 percent of all file system actions
but also outcome in billions of pieces of metadata in
directories. Real-world applications establish the
wide actuality of access locality that is helpful to
classify semantic relationship. For example, Filecules
examines a great set of real suggestions and arranges
that files can be confidential into interrelated groups
since 6.5 percent of files explanation for 45 percent
of I/O requests. Spyglass reports that the locality
ratios are below 1 percent in many drops, connotation
that interconnected files are contained in less than 1
percent of the manual space. A assignment study on a
large-scale file system determines that rarer than 1
percent clients issue 50 percent file wishes and over
60 percent re-open actions occur within one minute.
A recent study displays that resident write operations
essence on 22 percent files in a five-year dated. The
reality of access locality simplifies the performance
optimization in many computer organization
schemes.
IV. METHODOLOGY
4.1 EXISTING METHOD
Detecting a objective file by physically
directing the encyclopaedias through directory trees
in a great system totals to pointed a needle in a
haystack. As the manual tree converts gradually
“heavier”, it is similarly hard for users to instruct the
file systems where a file should be kept and to find
them rapidly. When one does not recognize the
complete pathnameof a file, measured complete
search over all calendars is often resorted to. Such
thorough search on a great organisation with billions
of files takes a unreasonable amount of time. It is
level more trying to trace interrelated files
subsequently users often cannot clearly outline fixed
search conditions in most file systems.
The metadata may be structured, semi
structured, or even unstructured, since they come
from different operational system platforms and
support various real-world applications. This is often
ignored by present database solutions.Existing file
systems only provide filename-based boundary and
allow users to request a given file, which strictly
limits the suppleness and comfort of use of file
establishments. It only brings a filename-based
edge.Provide the simultaneous access with high
latency.
4.2 PROPOSED METHOD
As the storage capacity is upcoming Exabyte’s
and the number of files stored is achieving billions,
directory-tree based metadataorganization commonly
deployed in predictable file systems can no longer
meet the needs of scalability and functionality. For
the next-generation large-scale packing systems, new
metadata organization schemes are preferred to meet
two critical goals:
1) to attend a large number of simultaneouscontacts
with low potential and
2) to deliversupple I/O boundaries to allow users to
achieve advanced metadata queries, such as
range and top-k queries, to further decrease
query latency.
Fig 1: Proposed Method
The basic idea behind Smart Store is that files
are gathered and stored allowing to their metadata
semantics, instead of directory namespace. That
relates the two schemes. This is inspired by the
reflection that metadata semantics can monitor the
accumulation of highly associated files into groups
that in turn have higher possibility of satisfying
complex query requests, thoughtfully matching the
3. M. Suguna Int. Journal of Engineering Research and Applications www.ijera.com
ISSN : 2248-9622, Vol. 5, Issue 3, ( Part -5) March 2015, pp.44-47
www.ijera.com 46 | P a g e
access pattern of locality. Thus, query and other
relevant operations can be completed within one or a
small number of such groups, where one group may
include several storage nodes, other than linearly
searching via brute force on almost all storage nodes
in a directory namespace approach. On the other
hand, the semantic grouping can also improve system
scalability and avoid access bottlenecks and single-
point failures since it renders the metadata
association fully reorganized whereby most actions,
such as inclusion/omission and queries, can be
implemented within a given group.
4.3 MODULES DESCRIPTION
1. Node creation
2. Construction of r-tree
3. User query processing
4. Multi query service
4.3.1 NODE CREATION
Here the system contains the collection of
storage units and index units. In this module first
create the storage unit and index unit by giving the
detail information of node such as node name, node
ipaddress and node port no.
4.3.2 CONSTRUCTION OF R-TREE
A semantic R- involves of index units holding
location and planning data and storage units
containing file metadata, both of which are presented
on a collection of storage servers. One or more R-
trees may be used to represent the same set of
metadata to match query patterns effectively. Smart
Store supports complex queries, including range and
top-k queries, in addition to simple point query.
Smart Store that provides multiquery services for
users while organizes metadata to enhance system
performance by using decentralized semantic R-tree
structures.
Each metadata server is a leaf node in our
semantic R-tree and can also potentially hold
multiple nonleaf nodes of the R-tree. We refer to the
semantic R-tree leaf nodes as storage units and the
nonleaf nodes as index units.
4.3.3 USER QUERY PROCESSING
Smart Store supports flexible multi-query
services for users and these queries follow similar
query path. In general, users initially send a query
request to a casually chosen server that is also
signified as storage unit that is a leaf node of
semantic R-tree.
The selected storage unit, also called home unit
for the invitation, then recovers semantic R-tree
nodes by using an available multicast-based or off-
line pre-computation approach to locating a query
request to its correlated R-tree node. After obtaining
query results, the home unit returns them to users.
4.3.4 MULTI QUERY SERVICE
It supports complex queries, such as range and
top-k queries, within the context of ultra-large-scale
circulated file systems. More precisely, our Smart-
Store can care three query edges for point, range, and
top-k queries. Predictable query systems in small
scale file systems are regularly troubled with
filename-based queries that will soon be extracted
ineffective and hopeless in next-generation large-
scale circulated file systems.
The composite queries will attend as an vital
portal or browser, like the web or web browser for
Internet and city map for a tourist, for query services
in an ocean of records. First effort at providing
provision for complex queries right at the file
arrangement level.
V. CONCLUSION
The new namespace organization system, that
activities semantic connections among files to create
a flat, small, and correct semantic attentive
namespace for separate file. The file namespace is a
smooth construction without an inside hierarchy. For
a specified file, its namespace involve of a positive
number of the greatest closely associated files. Here
design an effective method to recognize semantic
connections among files by consuming a humble and
wild LSH-based lookup. For each lookup action,
SANE efficiently grants users’ files that power be of
benefits.Implementation of SANE as a middleware
that can path on highest of most present file
organizations, orthogonally to manual trees, to enable
file lookups. In addition, the semantic association
exactly recognized in SANE can be used to advance
some scheme functions, such as information
deduplication and file prefetching. SANE is a
respected tool for both system designers and
consumers.
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