Key management is the base of wireless sensor network security, key pre-distribution way is a high feasibility method in key management. The network connectivity rate, resilience against node capture and the storage consumption are important performance indicators in key pre-distribution way. However, most of the existing key pre-distribution schemes of wireless sensor network have the problems...

We propose a radical re-architecture of the traditional operating system storage stack to move the kernel off the data path. Leveraging virtualized I/O hardware for disk and flash storage, most read and write I/O operations go directly to application code. The kernel dynamically allocates extents, manages the virtual to physical binding, and performs name translation. The benefit is to dramatic...

Distributed management of data is one of the most important problems facing grids. Within the Enabling Grids for Enabling eScience (EGEE) project, currently the world’s largest production grid, a sophisticated hierarchy of data management and storage tools have been developed to help Virtual Organisations (VOs) with this task. In this paper we review the technologies employed for storage and da...

The University of Edinburgh has a significant interest in mass storage systems as it is one of the core groups tasked with the roll out of storage software for the UK’s particle physics grid, GridPP. We present the results of a development project to provide software interfaces between the SDSC Storage Resource Broker, the EU DataGrid and the Storage Resource Manager. This project was undertake...

We propose a new scheme for managing files of variable-length dynamic records, based on storing the records in large, fixed-length blocks. We demonstrate the effectiveness of this scheme for text indexing, showing that it achieves space utilisation of over 95%. With an appropriate block size and caching strategy, our scheme requires on average around two disk accesses—one read and one write—for...

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...

Storage Class Memory (SCM) is here to stay. It has characteristics that place it in a class apart both from main memory and hard disk drives. Software and systems, architectures and algorithms need to be revisited to extract the maximum benefit from SCM. In this paper, we describe work that is being done in the area of Storage Class Memory aware Data Management at IBM. We specifically cover the...

This report describes a management scheme for flash memory-based storage systems. This scheme will be implemented into a flash memory-based FAT file system in the Ramos project running in the Institute of Information Science (IIS). Ramos project targets on building software components for real time and multimedia applications that most of the consumer electronic products can be easily construct...

Definition The management of clinical data for supporting patient care and for supporting retrospective clinical research requires a means to acquire the clinical data and a repository that stores the data and provides the functions necessary for managing them over their lifetime. Typically, patient data are collected ‘‘at the point of care’’ (i.e. onsite where health care is being provided) an...

This letter introduces a method to manage energy storage in electricity grids. Starting from the stochastic characterization of electricity generation and demand, we propose an equation that relates the storage level for every time-step as a function of its previous state and the realized surplus/deficit of electricity. Therefrom, we can obtain the probability that, in the next time-step: (i) t...