Genomic data leaks are irreversible. Leaked DNA cannot be changed, stays disclosed indefinitely, and affects the owner's family members as well. The recent large-scale genomic data collections [1], [2] render the ...
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ISBN:
(纸本)9781665497473
Genomic data leaks are irreversible. Leaked DNA cannot be changed, stays disclosed indefinitely, and affects the owner's family members as well. The recent large-scale genomic data collections [1], [2] render the traditional privacy protection mechanisms, like the Health Insurance Portability and Accountability Act (HIPAA), inadequate for protection against the novel security attacks [3]. On the other hand, data access restrictions hinder important clinical research that requires large datasets to operate [4]. These concerns can be naturally addressed by the employment of privacy-enhancing technologies, such as a secure multiparty computation (MPC) [5]–[10]. Secure MPC enables computation on data without disclosing the data itself by dividing the data and computation between multiple computing parties in a distributed manner to prevent individual computing parties from accessing raw data. MPC systems are being increasingly adopted in fields that operate on sensitive datasets [11]–[13], such as computational genomics and biomedical research [14]–[22].
The binary hypercube, a popular model for fault-tolerant interconnection networks, has been studied. It has been shown that, for a local area network based on a binary hypercube, having 2r nodes where every data is re...
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ISBN:
(纸本)0818608935
The binary hypercube, a popular model for fault-tolerant interconnection networks, has been studied. It has been shown that, for a local area network based on a binary hypercube, having 2r nodes where every data is replicated r times, in the absence of faults, any query involving an arbitrary sequency of n joins, n &le r, can be performed by repeatedly executing joins in a distributed fashion using n node disjoint paths from n/2 distinct sites of database operations to n arbitrary sites containing a target relation each. This protocol also solves the problem of materialization of relations. In the presence of up to r-2 faults, the protocol still guarantees N node disjoint paths to arbitrary sites. The value of N is determined by the number of faulty nodes.
Supporting range query over Peer-to-Peer systems has attracted many research efforts in, recent years. In this paper, we propose a new multidimensional indexing structure,for P2P systems called distributed Hilbert R-t...
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ISBN:
(纸本)0769526381
Supporting range query over Peer-to-Peer systems has attracted many research efforts in, recent years. In this paper, we propose a new multidimensional indexing structure,for P2P systems called distributed Hilbert R-trees (DHR-trees). DHR-trees enables multidimensional range query to be executed similarly as in overlapping regions tree in P2P systems. Its distributed structure makes it fault-tolerant and scalable to dynamic network environment with a large number of peers as well. Our experiments shows that it performs well on multidimensional range query while the maintenance cost is reasonably low.
Leases have proved to be an effective concurrency control technique for distributedsystems that are prone to failures. However, many benefits of leases are only realized when leases are granted for approximately the ...
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ISBN:
(纸本)9780769544502
Leases have proved to be an effective concurrency control technique for distributedsystems that are prone to failures. However, many benefits of leases are only realized when leases are granted for approximately the time of expected use. Correct assessment of lease duration has proven difficult for all but the simplest of resource allocation problems. In this paper, we present a model that captures a number of different lease styles and semantics used in practice. We consider a few performance characteristics for lease-based systems and analytically derive how they are affected by lease duration. We confirm our analytical findings by running a set of experiments with the OO7 benchmark suite using a variety of workloads and faultloads.
In this paper we investigate features of a parallel object server when used as a data repository in a CASE tool. We argue that hierarchical structures of fine grained objects are typical for data used by CASE tools, w...
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ISBN:
(纸本)0769501915
In this paper we investigate features of a parallel object server when used as a data repository in a CASE tool. We argue that hierarchical structures of fine grained objects are typical for data used by CASE tools, we describe the construction of the server;and the implementation of the prototype. The presented results of our experiments concern the question how the speedup depends on the number of processors involved, the number of users working simultaneously and the size of methods in classes.
Advances in optical technology have increased the interest for multiprocessor architectures based on lightwave networks because of the vast bandwidth available. in this paper we propose a passive star multi-hop lightw...
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ISBN:
(纸本)0818684038
Advances in optical technology have increased the interest for multiprocessor architectures based on lightwave networks because of the vast bandwidth available. in this paper we propose a passive star multi-hop lightwave network called stack-Kautz, based on the Kautz graph. We show that this architecture is very cost-effective with respect to its resources requirements. We also propose control protocols for accessing the optical passive star couplers, which improve on the bit complexity of the control sequence proposed in the literature for the Partitioned Optical Passive Star network Finally, we show through simulation that these control protocols efficiently implement shortest path routing on the stack-Kautz network.
The proceedings contains 13 papers. Topics discussed include intelligent agents, distributed production systems, knowledge partitioning and allocation, knowledge base accuracy, mediator in interagent induction, Petri ...
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The proceedings contains 13 papers. Topics discussed include intelligent agents, distributed production systems, knowledge partitioning and allocation, knowledge base accuracy, mediator in interagent induction, Petri net, abductive reasoning model, prolog compiler, parallel processing algorithms, heuristic method for parallelism, and transaction management for real-time databases.
This paper illustrates the effects of the Hyper-Threading processor technology on the runtime performance of a parallel and distributed simulation middleware. A preliminary analysis of the middleware design and execut...
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ISBN:
(纸本)0769526977
This paper illustrates the effects of the Hyper-Threading processor technology on the runtime performance of a parallel and distributed simulation middleware. A preliminary analysis of the middleware design and execution parameters is given to identify the tuning parameters and to evaluate the scalabilility of parallel simulation. A real testbed scenario has been illustrated, based on the ARTIS parallel and distributed simulation middleware. The experimental analysis has provided some interesting guidelines about the way to adapt the parallel and distributed simulation middleware to Hyper-Threading and to increase the execution speed of the simulation.
CRDTs are distributed data types that make eventual consistency of a distributed object possible and non adhoc. Geo-distributedsystems are spread across multiple data centers at different geographic locations to ensu...
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ISBN:
(数字)9781728142227
ISBN:
(纸本)9781728142227
CRDTs are distributed data types that make eventual consistency of a distributed object possible and non adhoc. Geo-distributedsystems are spread across multiple data centers at different geographic locations to ensure availability and performance despite network partitions. These systems must accept updates at any replica and propagate these updates asynchronously to every other replica. Conflict-Free Replicated Data Types (CRDTs) ensures eventual consistency in the replicas despite asynchronous delivery of updates. Extending this idea to fog computing servers where connection reliability is low, eventual consistency amongst the servers is required. We configure Kubernetes, an open-source container orchestration system used for automating deployment, scaling, and management of containerized applications, and use it for cluster deployment of CRDT based low resource intensive AntidoteDB can be used for deployment on fog servers to ensure eventual consistency amongst these servers. We have developed an automated benchmarking tool for benchmarking edge computing applications.
An architecture has been structured to map the distributed business logic for product engineering lifecycle. In this architecture, a commercial Computer-Aided Design (CAD) system and an innovative Computer-Aided Proce...
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ISBN:
(纸本)0769501915
An architecture has been structured to map the distributed business logic for product engineering lifecycle. In this architecture, a commercial Computer-Aided Design (CAD) system and an innovative Computer-Aided Process Engineering (CAPE) system, which was developed by the author and commercialised by an Australian company, are distributedly integrated using VisiBroker's Common Object Request Broker Architecture (CORBA) as the middleware. The architecture, presented in this paper, provides a framework for the construction of a new and innovative distributed system to support distributed concurrent product engineering lifecycle.
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