Federated systems are an emerging paradigm for information sharing and integration. Such systems require access management policies that not only protect user privacy and resource security but also allow scalable and seamless interoperation. Current solutions to distributed access control generally fail to simultaneously address both dimensions of the problem. This book describes the design of a policy engineering framework, called X-FEDERATE, for specification and enforcement of access management policies in federated systems. The framework has been designed from the perspectives of both security management and software engineering to not only allow specification of requirements for federated access management but also allow development...
ISBN: 978-3-6391-1101-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
This thesis introduces an integrated security framework that enables secure formation, evolution and management of ad-hoc networks. An ad-hoc network is perceived as a community of autonomous devices interconnected through wireless links. The establishment of this community is based on a doctrine that defines the roles of participants, the characteristics that participants must exhibit in order to be eligible to join the community in a specific role, as well as policies governing their behaviour within the community. Lightweight management and security protocols are designed to facilitate the interaction in the community. Authentication of devices and verification of credentials rely on security information available in the device as...
ISBN: 978-3-6392-7266-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
Local search methods (LSM) such as metaheuristics are useful tools to solve hard combinatorial optimization problems (COP). LSM can be further improved by identifying and exploiting regularities. This can be achieved by means of machine learning (ML) techniques to extend existing LSM. The author overviews how to integrate ML techniques into LSM to solve COP where only evaluative instead of constructive feedback can be obtained. A theoretical framework called Guided Adaptive Iterated Local Search (GAILS) is developed and investigated which demonstrates how to apply Reinforcement Learning (RL) to adaptively solve COP. The framework extends the well known and powerful metaheuristic Iterated Local Search and establishes the notion of a Local...
ISBN: 978-3-6390-3456-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
Книга представляет собой репринтное издание. Несмотря на то, что была проведена серьезная работа по восстановлению первоначального качества издания, на некоторых страницах могут обнаружиться небольшие "огрехи": помарки, кляксы и т.п. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 9781147395242
Издательство:
Книга по требованию
Дата выхода: июль 2011
This research attempts to construct mathematical models for estimating length of stay per admission and investigating the effects of patients' characteristics and clinical indicators on the length of stay for the top ten Diagnosis-Related Groups (DRGs) at a teaching hospital. It is also concerned with the development of cost per admission and cost per patient day functions. Further, these functions are used for analysis to determine a value of the length of stay that would minimize cost per patient day. Also, the effects of changing the length of stay (from the actual to the projected levels) on the total cost per year and the cost per patient day are examined. Moreover, the current cost system for the teaching hospital is evaluated and...
ISBN: 978-3-8383-2981-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
Distributed Virtual Environments (DVEs) are networked VR systems that support group work and whose central concept is one of a shared virtual world, i.e. a computer generated space where participants can meet and interact. To address the need that DVE middleware platforms offer adequate support to applications that run on the public Internet, DVE middleware platforms ought to meet six requirements. These include scalability, persistence, responsiveness, flexibility, maintainability and extensibility. This book argues that research efforts aimed at the implementation of mechanisms to address the first three requirements have largely been successful but, in contrast, much less focus has been put on addressing the flexibility,...
ISBN: 978-3-6390-0374-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In statistics, a priori knowledge is prior knowledge about a population, rather than that estimated by recent observation. It is common in Bayesian inference to make inferences conditional upon this knowledge, and the integration of a priori knowledge is the central difference between the Bayesian and Frequentist approach to statistics. We need not be 100% certain about something before it can be considered a priori knowledge, but conducting estimation conditional upon assumptions for which there is little evidence should be avoided. Данное издание не является оригинальным....
ISBN: 978-6-1328-6721-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
Книга представляет собой репринтное издание. Несмотря на то, что была проведена серьезная работа по восстановлению первоначального качества издания, на некоторых страницах могут обнаружиться небольшие "огрехи": помарки, кляксы и т.п. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 9781147100518
Издательство:
Книга по требованию
Дата выхода: июль 2011
I discuss the estimation of a process capability index for three-dimensional data. Initially, I focus on the case in which the engineering tolerance associated with the measurements is a sphere. Then, I extend the discussion to the more general case in which the engineering tolerance is ellipsoidal. In both cases, I develop summary measures for repeatability and reproducibility, to be used in the context of a process capability index. In the spherical tolerance case I define summary measures, where each measure is based on the diameter of a sphere that leads to a pre-specified capture rate. As a process capability index, I propose ratios, where each ratio is the diameter of such a sphere divided by the diameter of the tolerance sphere....
ISBN: 978-3-8433-8517-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
Книга представляет собой репринтное издание. Несмотря на то, что была проведена серьезная работа по восстановлению первоначального качества издания, на некоторых страницах могут обнаружиться небольшие "огрехи": помарки, кляксы и т.п. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
ISBN: 9781146204552
Издательство:
Книга по требованию
Дата выхода: июль 2011
This work proposes a novel, classificatory analysis based relevance feedback framework based on a user-centric model of information need that is independent of any particular retrieval paradigm. The model of the user need is based on the principle that a complete representation of the user need is contained in an exhaustive user classification of the collection. This model provides a conceptually appealing basis for relevance feedback; each successive iteration of relevance feedback can be treated as a classification that becomes a closer approximation of the user's information need. The system iteratively achieves a better understanding of the user's information need, gradually converging to a satisfactory set of results. The framework...
ISBN: 978-3-6392-0779-8
Издательство:
Книга по требованию
Дата выхода: июль 2011
Today the use of network technologies has become a part of our life. Most of the networks, either Internet or intranet, wired or wireless, is full infrastructure based, which, however, has limitations to form the more and more pursued ad hoc net work in the market. As a response, Bluetooth technology is proposed to realize ad hoc wireless personal networks or other short range networks using affordable chips with low power demand. The entire set of specifications of the Bluetooth technology, however, is huge and hence not easy for ordinary people to comprehend in a short time. This small book is expected to help interested readers, such as business people, university students, artists, industrial clerks or technicians, even house wives...
ISBN: 978-3-8433-7795-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
Wearable and embedded wireless sensor platforms are often highly constrained in size and power consumption in order to operate in unintrusive ways. To meet these constraints, the memory is kept as small as possible to reduce area and power, but at the same time it poses new challenges on programming. To address these problems, this book proposes (1) a framework for synthesis of host-assisted scripting engines, (2) a minimum-overhead yet powerful runtime system based on recursive threaded code, and (3) a host-assisted memory optimization technique that exploits high-level knowledge in models of computation. The benefits are three-fold: first, the interactive access between programmer and embedded system improves productivity of...
ISBN: 978-3-6391-4966-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
In modern society, computer technology is gaining more and more importance. Mobile phones, personal digital assistants, and other small gadgets increase functionality by constant or decreasing size. With further development of embedded technology, microcontrollers are integrated into everyday devices, making them 'smart'. Besides monitoring and controlling functionality, microcontrollers may also support communication with other devices. Especially wireless communication provides convenience and enables new controlling appliances, but also leads to increased threats to the system. This book highlights security aspects of a modern Wireless Sensor Network (WSN) taking the wireless control network Sindrion as an example. Sindrion aims at...
ISBN: 978-3-8364-7266-1
Издательство:
Книга по требованию
Дата выхода: июль 2011
Biometrics, which is sometimes called biometric recognition, refers to the recognition of individuals based on their physiological (e.g., fingerprints, face, retina, iris) and/or behavioral (e.g., gait, signature) characteristics. In this book, an explanation is given of the usage of fingerprints from an integrity point of view, how to improve the captured images by enhancement and feature extraction when it is a poor and low resolution fingerprint image, and how to protect templates in order to enhance the security and privacy issue of the entire authentication system. Some problems with current systems have been identified. In order to solve these difficulties, this study has been divided into three parts. In the first part, an...
ISBN: 978-3-8383-7028-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
Data mapping is a recurring problem that we face in most data exchange and enterprise system integration scenarios. This turns to be a challenging task due to the heterogeneity of the involved data models and their continual evolution over time. It is even more complex when dealing with complex hierarchical representations of business objects that present a multitude of special constraints such as time constraints. This book exposes the motivations for combining both model-driven methods and manually written application-specific algorithms to solve mapping of business objects. The proposed approach copes with complex data representations and special constraints encountered in a real mapping scenario. Additionally, a semi-automatic...
ISBN: 978-3-6391-2009-7
Издательство:
Книга по требованию
Дата выхода: июль 2011
The contribution of this work is to apply a semantic approach based on web ontologies to Digital Rights Management. The main result is the development of a copyright ontology. It models the copyright core concepts for creations, rights and the basic kinds of actions that operate on them through their value chain. The set of actions operating on content are the building blocks that combined cope with the complexity of the copyright domain. At the same time, their simplicity guarantees a high level of interoperability and evolvability. The resulting copyright modelling framework is flexible and complete enough to model many copyright scenarios, not just those related to the economic exploitation of content. Additionally, the ontology...
ISBN: 978-3-6391-5740-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
The term Service Oriented Architecture is often used in conjunction with web services but often that is where the implementation of SOA stops. While web services are an important aspect of SOA, concepts such as abstraction, low cohesion, service offering and service discovery are the essential principles that SOA is based on. The author, Florian Leibert provides an overview of SOA concepts, the history of SOA, why it is important to use this architectural paradigm and shows how to develop a software project using SOA from the grounds up. He shows how to tackle application development using SOA principles and software engineering practices. Throughout the book, the author gives examples on how social networks and applications within...
ISBN: 978-3-6390-6163-5
Издательство:
Книга по требованию
Дата выхода: июль 2011
Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
High Quality Content by WIKIPEDIA articles! A# is a port of the Ada programming language to the Microsoft .NET platform. A# is freely distributed by the Department of Computer Science at the United States Air Force Academy as a service to the Ada community under the terms of the GNU General Public License. AdaCore has taken over this development, and announced "GNAT for .NET", which is a fully supported .NET product with all of the features of A# and more. Ada is a structured, statically typed, imperative, wide-spectrum, and object-oriented high-level computer programming language, extended from Pascal and other languages. It was originally designed by a team led by Jean Ichbiah of CII Honeywell Bull under contract to the United States...
ISBN: 978-6-1322-1168-2
Издательство:
Книга по требованию
Дата выхода: июль 2011
Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A# (A sharp) is an object-oriented functional programming language distributed as a separable component of Version 2 of the Axiom computer algebra system. A# types and functions are first-class values and can be used freely in conjunction with an extensive library of data structures and other mathematical abstractions. A key design guideline for A# was suitability of compilation to portable and efficient machine code. Development of A# has now switched to the Aldor programming language. Данное издание не является оригинальным. Книга печатается по...
ISBN: 978-6-1331-4093-6
Издательство:
Книга по требованию
Дата выхода: июль 2011
A spectrum of algorithm animation systems has evolved for the teaching and learning of distributed algorithms. These have ranged from passive animation systems, which provide multiple prepared views of an algorithm’s process for a learner to view, stop, pause, step through or rewind, through active simulation systems, which enable a learner to affect changes to the behavior of an algorithm during execution, to algorithm construction systems, which enable a learner to create an animation of an algorithm’s behavior. However, these systems have failed to catch on in mainstream computer science education. This is because each system suffers from one or more shortcomings: lack of real time engagement with an algorithm’s content, an...
ISBN: 978-3-6391-2298-5
Издательство:
Книга по требованию
Дата выхода: июль 2011
A major problem with Component-Based Software Engineering (CBSE) is the quality of the components used in a system. The reliability of a componentbased software system depends on the reliability of the components that it is made of. In CBSE, the proper search, selection and evaluation process of components is considered the cornerstone for the development of any effective component-based system. So far the software industry was concentrated on the functional aspects of components, leaving aside the difficult task of assessing their quality. If the quality assurance of in-house developed software is a demanding task, doing it with software developed elsewhere, often without having access to its source code and detailed documentation,...
ISBN: 978-3-6391-8441-9
Издательство:
Книга по требованию
Дата выхода: июль 2011
