Distributed Work4443 Руб.
This book covers the distributed database models, explains the concepts of these models, and presents the way these models are used to integrate the database systems. Also this book covers the scientific researches that work on distributed database systems integration, especially when these systems are running on heterogeneous environments. At last this book suggests a new approach for designing and integrating distributed database system. This book can be used as reference in distributed database systems hence it contains the scientific and the practical materials on distributed database systems component such as fragmentation, allocation, replication, distributed query processing, query optimization and concurrency control , also it can be used as a guideline for developing a distributed database application.7612 Руб.
The work of this thesis falls in the field of the embedded real-time computer systems, more precisely the embedded software in the vehicles for the emergent driving assistance systems. The thesis work was supported by the European project (RoadSense) whose objective was the evaluation of the driving assistance systems (ADAS) for the next generations of vehicles. The three principal axes of the thesis are: First, the development of a dynamic reconfigurable middleware called SCOOT-R. Second, the development of end-to-end real-time scheduling strategies in order to schedule SCOOT-R operations with the main goal of end-to-end QoS guarantee. Finally, the development of feedback-based scheduling schemes to schedule driving assistance systems. The adaptation in this scheme is carried out according to the current driving situation and the driver behavior, which will further lead to the change of the associated driving assistance function''s criticalness.6552 Руб.
In this work, we have studied the quadratic cost optimal control problems and their numerical analysis of nonlinear parabolic distributed parameter systems. After established the fundamental existence and uniqueness results, we have developed the nonlinear optimal control theory for the equations having uniform Lipschitz continuous nonlinearity. Then we have applied the theoretical results to practical nonlinear parabolic partial differential equations including reaction-diffusion equations, diffusion Hopfield neural network equations. Furthermore, numerical evidences for these issues have also been solved by using variational method and finite element approach.4846 Руб.
A wireless mesh networks (WMNs) has emerged recently, WMN consist of two types of nodes mesh routers and mesh clients.WMN is dynamically self-organized and self-configured, with the nodes in the network automatically establishing and maintaining mesh connectivity among themselves. Channel assignment is a critical issue in WMN which is the mapping between the available channels and the radios at each node such that the network performance is optimized, and hence the focus of this work along with static channel assignment, multi-radio, multi-channel. Multi-radio MAC can potentially achieve higher network capacity than single-radio MAC. We design and implement a new agent (DSBCA) distributed channel assignment spanner base, the routing protocol Optimize the network performance considering the throughput, end-to-end delay, connectivity and the interference of our channel assignment algorithm. Base on the network simulations NS2.34 on Linux Fedora and our proposed channel assignment algorithm improved the throughput, minimal-connectivity preserving channel assignment algorithm.4808 Руб.
Миллионы людей уже достигли физического и ментального совершенства с помощью программы "Тело-для-Жизни". Теперь эксперт в области женского здоровья Памела Пик рассказывает, как использовать выигрышные принципы этого метода, чтобы избавиться от лишнего веса. Описана программа физических упражнений, позволяющая женщинам избавиться от лишнего веса и обрести здоровье.132 Руб.
In modern business enterprises, it is frequent to develop an integrated application to provide uniform access to multiple existing information systems running internally or externally of the enterprise. Data integration is a pervasive challenge faced by these applications that need to query across multiple autonomous and heterogeneous data sources. Integrating such diverse information systems becomes a challenging task particularly when different applications use different data formats and query languages which are not compatible with each other. Hence, the data integration tools have to provide the optimal solution to mitigate the heterogeneity in data formats and query languages. The goal of this thesis is to provide better means to easily and dynamically integrate distributed heterogeneous web data sources (particularly XML and RDF data sources) in such a way that the user can easily build data integration applications. The main topic of this work is devoted to the distributed heterogeneous data integration for web data sources using DeXIN approach, while data concerns aware querying system provides data concerns assurance and DeXIN mashup tool provides an easy to use interface.5685 Руб.
The increasing adoption of Cloud-based data processing and storage poses a number of privacy issues. Users wish to preserve full control over their sensitive data and cannot accept it to be fully accessible to an external storage provider. Previous research in this area was mostly addressed at techniques to protect data stored on untrusted database servers; however, I argue that the Cloud architecture presents a number of specific problems and issues. This work contains a detailed analysis of open issues. To handle them, I present a novel approach where confidential data is stored in a highly distributed partitioned database, partly located on the Cloud and partly on the clients. In my approach, data can be either private or shared; the latter is shared in a secure manner by means of simple grant-and-revoke permissions. I have developed a proof-of-concept implementation using an in?memory RDBMS with row-level data encryption. This type of approach is rarely adopted in conventional outsourced RDBMSs because it requires several complex steps. Benchmarks of my proof-of-concept implementation show that my approach overcomes most of the problems.4539 Руб.
Эта книга откроет дверь во вторую молодость. Ее написала удивительная женщина, доктор философии и известный психолог Памела Блэр. Она проанализировала свой собственный опыт, опыт своих пациентов и подруг и реально доказала, что во второй половине жизни у вас еще все впереди.В своей книге Памела Блэр подняла все вопросы, которые волнуют женщин после пятидесяти. Она рассказала, как нужно относиться к своему здоровью, к работе и уходу на пенсию, к сексу, новым знакомствам и творческой самореализации.474 Руб.
System implemented within an organization has a role of improving its efficiency, effectiveness and productivity. Nevertheless, sometime an Information System can not affect the organization on the desired way, due to its improper planning and design. Such a systems might operate for several years without having a major positive effect. Therefore, every organization have to evaluate their IT systems timely, to ensure their effectiveness and efficiency. HEMIS is one of such a systems operating since 2011, in the environment of the Ministry of Higher Education of Afghanistan, with out having a major positive impact. This work evaluates and analyses HEMIS, it identifies its issues, challenges and reasons of its ineffectiveness. And provides a new concept for the solution of the respected challenges.4808 Руб.
Это уже третий визит Мэри Поппинс в семейство Бэнксов. И как всегда с ее появлением, мир вокруг волшебно преображается. Но в конце книги, открыв таинственную дверь, Мэри Поппинс улетает навсегда...165 Руб.
The distributed multimedia systems services require optimum resource allocation and application configuration. In multimedia applications intermediate processing should be done among distributed media sources and sinks. Such applications include format conversions and mixing several media streams. To support these applications computers at the intermediate stage are being used to relieving end-users terminals from massive processing loads. It is important to consider that intermediate processing components, IPCs, are not subject to location restrictions. In this thesis the problem of allocating IPCs is discussed. Researchers had already formulated the problem for common structures in multimedia application settings like star shaped graphs and Single-Host-Multiple-Satellite, SHMS, distributed architecture. This work discusses multimedia applications like star shaped graphs on presented Double Star or Double-Host-Multiple-Satellite, DHMS, and Multiple-Host-Multiple-Satellite, MHMS, distributed architectures. Star shaped applications cover typical multimedia systems such as videoconferencing, mixing, multicasting, and Video-on-Demand, VoD, etc.5685 Руб.
Книга для чтения на английском языке предназначена для учащихся школ, классов и групп с углубленным изучением английского языка, а также для самостоятельно изучающих английский язык. Текст сокращен и обработан Т.М.Михайловой.92 Руб.