Clusters provide an outstanding cost/performance ratio, but their efficient orchestration, i.e. their cooperative management, maintenance, and use, still poses difficulties. Moreover, many sites operate multiple clusters, each possibly running under a different cluster management system. In this paper, we present an architectural scheme for the coordinated management of multiple clusters in a f...

Users perceive varying levels of utility for each different job completed by the cluster. Therefore, there is a need for existing cluster Resource Management Systems (RMS) to provide a means for the user to express its perceived utility during job submission. The cluster RMS can then obtain and consider these user-centric needs such as Quality-Of-Service requirements in order to achieve utility...

This paper introduces the CondorJ2 cluster management system. Traditionally, cluster management systems such as Condor employ a process-oriented approach with little or no use of modern database system technology. In contrast, CondorJ2 employs a data-centric, 3-tier web-application architecture for all system functions (e.g., job submission, monitoring and scheduling; node configuration, monito...

A management tool which is needed for monitoring and managing cluster-based DBMSs has been little studied. So, we design and implement a cluster-based DBMS management tool with high-availability that monitors the status of nodes in a cluster system as well as the status of DBMS instances in a node. The tool enables users to recognize a single virtual system image and provides them with the stat...

A layered scheme for target tracking in binary sensor networks is proposed in this paper to improve the tracking precision with minimum resource allocation. In the physical layer, binary sensors are employed, reducing not only hardware configuration overhead but also communication cost. By adopting binary variational filtering algorithm, considerable accurate tracking is ensured even in case of...

The study examines the alignment and effectiveness of strategic choice and strategic management accounting (SMA) system design configurations. Six configurations were derived empirically deploying a cluster analysis of data collected from a sample of 193 large Slovenian companies. The first four clusters appear to provide some support for the central configurational proposition that higher leve...

Visual applications need to represent, manipulate, store, and retrieve both raw and processed visual data. Existing relational and object-oriented database systems fail to offer satisfactory visual data management support because they lack the kinds of representations, storage structures, indices, access methods, and query mechanisms needed for visual data. We argue that extensible visual objec...

Heterogeneous cluster-based wireless sensor networks (WSN) attracted increasing attention recently. Obviously, the clustering makes the entire networks hierarchical; thus, several kinds of keys are required for hierarchical network topology. However, most existing key management schemes for it place more emphasis on pairwise key management schemes or key predistribution schemes and neglect the ...

association of cluster headache and secondary blepharospasm bagheri a, md*; mohammadi m, md; khosravi fard k, md; harooni g, md ophthalmic research center, shahid beheshti university of medical sciences, tehran, iran * corresponding author: [email protected] purpose: to report a case of cluster headache associated with secondary blepharospasm and its management. case report: a 37-year-old ...