Решение уравнений математической физики в длинной арифметике Часть 2

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Решение уравнений математической физики в длинной арифметике Часть 2

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В данной книге рассматриваются программные реализации решений уравнений математической физики в длинной арифметике. Разработанный алгоритм длинной арифметики позволил выполнять все арифметические операции с произвольным количеством разрядов в целой и дробной частях операндов. На базе длинной арифметики были реализованы численные решения в длинной арифметике трехмерного уравнения Лапласа, трёхмерного диффузионного уравнения, трёхмерного волнового уравнения с заданными двухслойными границами. В программах в длинной арифметике осуществлялось построение систем конечно-разностных уравнений, решение систем методом Гаусса и проверка решения. Для написания программ использовался BORLAND С++ в WINDOWS. Книга будет полезной для студентов, аспирантов, научных работников.

Information Needs and Uses

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Information Needs and Uses

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The user is an important component in any information system. To create information awareness and to promote the use of information, it is necessary to know the needs of the users. Assessment of user needs has been developed by the present age of information explosions. According to Ranganathan’s fifth law of library science, library is a growing organism. As the growth of library is based on the satisfaction of the users, the views of the users are necessary to develop the library facilities and services. Surveying the user needs is helpful to find out the requirements of the users. The extent of usage of the existing library resources and the ways and means to increase the utilization are studied.

Periodic subgraph mining in dynamic networks

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Periodic subgraph mining in dynamic networks

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World today can be described as interactions of many entities such as humans, animals, smartphones interacting among themselves. Interactions that occur regularly typically correspond to significant, yet often infrequent and hard to detect interaction patterns that are interesting to know in order to understand and predict behaviors of entities. To identify these regular behaviors, the book presents the periodic subgraph mining problem in a dynamic network and an efficient algorithm to solve it. A dynamic network is a temporal sequence of graphs that represents interactions among individuals of a population over the time. Social network analysis is probably the most famous example of dynamic network analysis. The book proposes the applications of the problem on some real-world networks and shows that analyzing interesting and insightful periodic interaction patterns uncover and characterize the natural periodicities of systems.

Distributed Database Systems Integration

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Distributed Database Systems Integration

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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.

Internet Authentication for Remote Access

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Internet Authentication for Remote Access

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Nowadays, IP mobile devices need to employ a variety of different network access technologies to gain ubiquitous connectivity. This book reviews the authentication infrastructure challenges for Internet remote access supporting ubiquitous client mobility, and proposes a series of solutions obtained by adapting and reinforcing security techniques arising from different sources. The focus is on entity authentication protocols that can be carried both by the IETF PANA authentication carrier and by the EAP mechanisms, and possibly making use of an AAA infrastructure. The core idea is to adapt authentication protocols arising from the mobile telecommunications sphere to Internet remote access. A proposal is also given for Internet access using a public key based authentication protocol. The subsequent security analysis of the proposed protocols covers a variety of aspects, including: key freshness, DoS-resistance, and false-entity-in-the-middle attacks, in addition to identity privacy of users accessing the Internet via mobile devices. This book is destined to researchers or anyone else who is interested on authentication mechanisms for Internet remote access aiming ubiquitous mobility.

Hybrid Similarity Measure for XML Data Integration and Transformation

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Hybrid Similarity Measure for XML Data Integration and Transformation

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This book presents the solution for the data transformation from XML into ontology and the solution for integration of XML data. We propose a hybrid similarity measure based approach, that handles the distinct problems of syntactic, semantic, and schematic heterogeneity of XML data. Our similarity measure addresses both structural and semantic components and can be applied for both schema types, XSD and DTD . Due to the different targets between integration and transformation of XML data, we propose two types of similarity measures, which are similarity of elements between two schemas for data integration and similarity of elements within a schema for data transformation.

Database

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Database

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As we all know Database has a availability of a storage system, the most obvious of these being persistence. To sum it up, we can identify the following reasons for wanting a Database Management Systems short for DBMS: 1.We need to share data of all kinds between users (except for very small systems), between tools working on them, and usually between different computers. All should be able to work with the same set of data. 2.We need persistent storage and storage must be reliable. 3.Several users and/or several tools must be able to safely access the same data concurrently. 4.A DBMS may provide more efficient access to large amounts of data, through indexing and other optimizations. 5.A DBMS and its data model provides an abstraction; we do not need to care about the physical storage format. 6.A DBMS may also be used for communication between different users or applications.

Developing Trust in Ride Sharing System

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Developing Trust in Ride Sharing System

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Theme of work proposes an artificial transport system which composes traffic & mobility management on the terms of trust and security. It is an innovative technology which symbolizes intelligence such as, manages traffic and enable users to have a better informed and safer travelling with the properties of coordinated and smart use of transport networks. A person who travels from an origin to destination may share his ride with different people of same route, such a system is known as dynamic ride sharing. It means that people can make decisions of travelling in every span of time. Those people may have their own level of requirements, feasibilities, preferences and acquaintances. Trust is a property which is being analyzed in dynamic ride sharing where people were provided a healthy and clean environment of travelling.People were assumed trustworthy on their past experiences and scenarios. Intentions of willingness and attitudes toward trusting people are observed with the help of Human-Trust mechanisms.This system dealt with measuring the norms and beliefs of societies which further reduced social psychology problems in different civilizations.

Master in JavaScript

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Master in JavaScript

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JavaScript is one of the most simple, versatile and effective languages used to extend functionality in websites. Uses range from on screen visual effects to processing and calculating data on web pages with ease as well as extended functionality to websites using third party scripts among several other handy features, however it also possesses some negative effects that might make you want to think twice before implementing JavaScript on your website.