Operating-system support for distributed multimedia

Multimedia applications place new demands upon processors, networks and operating systems. While some network designers, through ATM for example, have considered revolutionary approaches to supporting multimedia, the same cannot be said for operating systems designers. Most work is evolutionary in nature, attempting to identify additional features that can be added to existing systems to support multimedia. Here we describe the Pegasus project's attempt to build an integrated hardware and operating system environment from\ud the ground up specifically targeted towards multimedia

EbbRT: a customizable operating system for cloud applications

Efficient use of hardware requires operating system components be customized to the application workload. Our general purpose operating systems are ill-suited for this task. We present Genesis, a new operating system that enables per-application customizations for cloud applications. Genesis achieves this through a novel heterogeneous distributed structure, a partitioned object model, and an event-driven execution environment. This paper describes the design and prototype implementation of Genesis, and evaluates its ability to improve the performance of common cloud applications. The evaluation of the Genesis prototype demonstrates memcached, run within a VM, can outperform memcached run on an unvirtualized Linux. The prototype evaluation also demonstrates an 14% performance improvement of a V8 JavaScript engine benchmark, and a node.js webserver that achieves a 50% reduction in 99th percentile latency compared to it run on Linux

The Types of Computer Technology Skills Needed by Graduates of the Information Systems Technology Program

To guide the solution to this problem, the following research goals were established: 1. The researcher will identify computer skills required of entry-level technicians at Canon I.T.S.; 2. The researcher will identify the types of computer technology courses offered in the IST program at Paul D. Camp Community College; 3. The researcher will align the Canon competency needs with Paul D. Camp Community College Information Systems Technology courses

Analysis of Security Possibilities of Platforms for 3D Graphics

This paper introduces the results of an analysis of security threats based on 3D graphics interface abuse mainly in Windows operating systems. Basic security threats, which can greatly influence the functionality and security of an operating system, are introduced in this paper. Due to the specific nature of the operating systems architecture, the most vulnerable part are the third party drivers, which have access to the core mode. Different approaches of protecting drivers are described together with disadvantages of these solutions. Practical methods of attacks are discussed in detail and when relevant, program alterations are suggested to program designers. The goal of these suggestion is to minimize or to completely eliminate mentioned security threats, making 3D graphics interface more secure

The E-Business Research Network: summary of the results of the Dutch pilot survey

A project has been started with the intention to develop an E-Business Research Network on E-business related research in business and management. The initiative has been taken in co-operation between Erasmus University and UMIST to develop a project in which the first stage concerns the development of a database of researchers and their activities in e-business related research in business and management. The next stage will be to investigate the needs in companies in relation to e-business. It is hoped that an Internet-based database will stimulate interaction and communication between the supply and demand sides of e-business related research. This assumption is based on our previous research in Quality Management conducted in the early to mid 1990's. This paper describes the project and also summarises the results of the first pilot questionnaire based on responses from researchers at universities in The Netherlands

Proposing a customized exokernel library to data mining

The implementation of customized system libraries in an exokernel environment is considered as a promising approach in optimizing data mining processes. Customized libraries in exokernel environments have been successfully used in optimizing other applications, and is potentially suitable to demanding applications such as data mining. A prototype, to test our hypothesis, is under construction. This work introduces data mining, the exokernel environment and describes our prototype's building strategy

Wireless Mesh Protocol for FreeRTOS

Bakalářská práce si klade za cíl v teoretické části představit princip fungování mesh sítí, jejich praktického využití, stručnému představení mesh protokolu a standartu 802.15.4. Dále představuje operační systémy reálného času, které lze využít pro tvorbu programů, založených na architektuře RTOS. V praktické části je vytvořeno několik programů, a provedeno měření spotřeby energie a počtu cyklů a na základě dosažených výsledků je nalezena nejvhodnější implementace do prostředí FreeRTOS. Závěrečná kapitola je věnována celkovému přehledu dosažených výsledků, které jsou přehledně uvedeny do tabulek.Bachelor thesis aims to introduce in thereretical part operating principe of mesh network, their practical use, brief introduction of mesh protokol and standard 802.15.4. Also present a real-time operating systems, that can be used for programming applications based on real-time operating systems architecture. In practical part is to create several progres and made measurements of energy consumption and the number of cycles. Based on the results is found most appropriate implementation into the FreeRTOS. The final chapter is devoted to the overview of the achieved results, which are summarized in the tables.

Information Systems Academic Program Assessment: A Comparison Of Objective And Subjective Approaches

Developing program assessment instruments and methodologies is a common problem in higher edu-cation. This paper reports on a study that compared an objective instrument against a subjective in-strument for measuring program learning objectives. The results indicate that at least four of the sev-en learning objectives apparently are being measured by the objective instrument

An Improved Min-Min Task Scheduling Algorithm for Load Balancing in Cloud Computing

Cloud computing is a model that uses computing resources (CPU, memory, processor etc.) which are delivered as a service over a network internet. It is a new field for large scale distributed computing. In cloud computing, one of the major task is to execute large number of tasks with given available resources to achieve high performance, minimal total time for completion, Minimum response time, effective utilization of resources etc. Keeping all these perspective, we need to design, develop and propose a scheduling algorithm to develop an allocation map to represent the set of tasks on appropriate resources. Though traditional Min-Min algorithm is a simple, yet efficient algorithm that provides a better scheduling to minimize the total time for completion of tasks compared to the other algorithms. However the drawback of this algorithm is the load imbalanced, which is one of the major issue for cloud provider. In this paper, we introduce an improved load balancing algorithm keeping Min-Min algorithm as base in order to reduce the makespan and increase the resource utilization (ILBMM). The proposed method has two different phases, in the first phase traditional min-min algorithm is executed and in second phase it selects the task with maximum completion time and assigns it to appropriate resource to produce better makespan and utilize resource effectivel

DESIGN ISSUES AND CLASSIFICATION OF WSNS OPERATING SYSTEMS

Wireless Sensor Networks is an emerging area of research. Wireless Sensor networks (WSNs) face lot of problems that do not arise in other types of wireless networks and computing environments. Limited computational resources, power constraints, low reliability and higher density of sensor nodes (motes) are just some basic problems that have to be considered when designing or selecting a new operating system in order to evaluate the performance of wireless sensor nodes (motes). In this paper we focused on design issues, challenges and classification of operating systems for WSNs