3,791,187 research outputs found
MEIA SYSTEMS: Membrane Encrypted Information Applications Systems
Membrane computing is a recent area that belongs to natural computing. This field works on computational models based on nature's behavior to process the information. Recently, numerous models have been developed and implemented with this purpose. P-systems are the structures which have been defined,developed and implemented to simulate the behavior and the evolution of membrane systems which we find in
nature. What we show in this paper is a new model that deals with encrypted information which provides security
the membrane systems communication. Moreover we find non deterministic and random applications in nature that are suitable to MEIA systems. The inherent parallelism and non determinism make this applications perfect object to implement MEIA systems
Social Web Communities
Blogs, Wikis, and Social Bookmark Tools have rapidly emerged onthe Web. The reasons for their immediate success are that people are happy to share information, and that these tools provide an infrastructure for doing so without requiring any specific skills. At the moment, there exists no foundational research for these systems, and they provide only very simple structures for organising knowledge. Individual users create their own structures, but these can currently not be exploited for knowledge sharing. The objective of the seminar was to provide theoretical foundations for upcoming Web 2.0 applications and to investigate further applications that go beyond bookmark- and file-sharing.
The main research question can be summarized as follows: How will current and emerging resource sharing systems support users to leverage more knowledge and power from the information they share on Web 2.0 applications? Research areas like Semantic Web, Machine Learning, Information Retrieval, Information Extraction, Social Network Analysis, Natural Language Processing, Library and Information Sciences, and Hypermedia Systems have been working for a while on these questions. In the workshop, researchers from these areas came together to assess the state of the art and to set up a road map describing the next steps
towards the next generation of social software
Information Surfaces in Systems Biology and Applications to Engineering Sustainable Agriculture
Systems biology of plants offers myriad opportunities and many challenges in
modeling. A number of technical challenges stem from paucity of computational
methods for discovery of the most fundamental properties of complex dynamical
systems. In systems engineering, eigen-mode analysis have proved to be a
powerful approach. Following this philosophy, we introduce a new theory that
has the benefits of eigen-mode analysis, while it allows investigation of
complex dynamics prior to estimation of optimal scales and resolutions.
Information Surfaces organizes the many intricate relationships among
"eigen-modes" of gene networks at multiple scales and via an adaptable
multi-resolution analytic approach that permits discovery of the appropriate
scale and resolution for discovery of functions of genes in the model plant
Arabidopsis. Applications are many, and some pertain developments of crops that
sustainable agriculture requires.Comment: 24 Pages, DoCEIS 1
Applications notice
The discipline programs of the Space and Terrestrial (S&T) Applications Program are described and examples of research areas of current interest are given. Application of space techniques to improve conditions on earth are summarized. Discipline programs discussed include: resource observations; environmental observations; communications; materials processing in space; and applications systems/information systems. Format information on submission of unsolicited proposals for research related to the S&T Applications Program are given
Information system support in construction industry with semantic web technologies and/or autonomous reasoning agents
Information technology support is hard to find for the early design phases of the architectural design process. Many of the existing issues in such design decision support tools appear to be caused by a mismatch between the ways in which designers think and the ways in which information systems aim to give support. We therefore started an investigation of existing theories of design thinking, compared to the way in which design decision support systems provide information to the designer. We identify two main strategies towards information system support in the early design phase: (1) applications for making design try-outs, and (2) applications as autonomous reasoning agents. We outline preview implementations for both approaches and indicate to what extent these strategies can be used to improve information system support for the architectural designer
Identifying common problems in the acquisition and deployment of large-scale software projects in the US and UK healthcare systems
Public and private organizations are investing increasing amounts into the development of
healthcare information technology. These applications are perceived to offer numerous benefits.
Software systems can improve the exchange of information between healthcare facilities. They
support standardised procedures that can help to increase consistency between different service
providers. Electronic patient records ensure minimum standards across the trajectory of care when
patients move between different specializations. Healthcare information systems also offer economic
benefits through efficiency savings; for example by providing the data that helps to identify potential
bottlenecks in the provision and administration of care. However, a number of high-profile failures
reveal the problems that arise when staff must cope with the loss of these applications. In particular,
teams have to retrieve paper based records that often lack the detail on electronic systems.
Individuals who have only used electronic information systems face particular problems in learning
how to apply paper-based fallbacks. The following pages compare two different failures of
Healthcare Information Systems in the UK and North America. The intention is to ensure that future
initiatives to extend the integration of electronic patient records will build on the ‘lessons learned’
from previous systems
Twisted Photons: New Quantum Perspectives in High Dimensions
Quantum information science and quantum information technology have seen a
virtual explosion world-wide. It is all based on the observation that
fundamental quantum phenomena on the individual particle or system-level lead
to completely novel ways of encoding, processing and transmitting information.
Quantum mechanics, a child of the first third of the 20th century, has found
numerous realizations and technical applications, much more than was thought at
the beginning. Decades later, it became possible to do experiments with
individual quantum particles and quantum systems. This was due to technological
progress, and for light in particular, the development of the laser. Hitherto,
nearly all experiments and also nearly all realizations in the fields have been
performed with qubits, which are two-level quantum systems. We suggest that
this limitation is again mainly a technological one, because it is very
difficult to create, manipulate and measure more complex quantum systems. Here,
we provide a specific overview of some recent developments with
higher-dimensional quantum systems. We mainly focus on Orbital Angular Momentum
(OAM) states of photons and possible applications in quantum information
protocols. Such states form discrete higher-dimensional quantum systems, also
called qudits. Specifically, we will first address the question what kind of
new fundamental properties exist and the quantum information applications which
are opened up by such novel systems. Then we give an overview of recent
developments in the field by discussing several notable experiments over the
past 2-3 years. Finally, we conclude with several important open questions
which will be interesting for investigations in the future.Comment: 15 pages, 7 figure
A primer on information theory, with applications to neuroscience
Given the constant rise in quantity and quality of data obtained from neural
systems on many scales ranging from molecular to systems',
information-theoretic analyses became increasingly necessary during the past
few decades in the neurosciences. Such analyses can provide deep insights into
the functionality of such systems, as well as a rigid mathematical theory and
quantitative measures of information processing in both healthy and diseased
states of neural systems. This chapter will present a short introduction to the
fundamentals of information theory, especially suited for people having a less
firm background in mathematics and probability theory. To begin, the
fundamentals of probability theory such as the notion of probability,
probability distributions, and random variables will be reviewed. Then, the
concepts of information and entropy (in the sense of Shannon), mutual
information, and transfer entropy (sometimes also referred to as conditional
mutual information) will be outlined. As these quantities cannot be computed
exactly from measured data in practice, estimation techniques for
information-theoretic quantities will be presented. The chapter will conclude
with the applications of information theory in the field of neuroscience,
including questions of possible medical applications and a short review of
software packages that can be used for information-theoretic analyses of neural
data.Comment: 60 pages, 19 figure
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