A Novel Method for Modeling and Evaluation of Uncertain Information Systems

2008 ◽  
Author(s):  
Ali Haroonabadi ◽  
Mohammad Teshnehlab ◽  
Ali Movaghar
Keyword(s):  
Information Systems ◽  
Uncertain Information ◽  
Novel Method

Extension and Unascertained Measure for Evaluation of Information Systems Security

2010 ◽  
Vol 20-23 ◽  
pp. 190-195
Author(s):  
Hua Wang Shi ◽  
Yong Deng
Keyword(s):  
Information System ◽  
Information Systems ◽  
Risk Evaluation ◽  
Measure Theory ◽  
Element Model ◽  
Security Risk ◽  
Factors Affecting ◽  
Is Security ◽  
Novel Method ◽  
Matter Element Model

Quantitative security risk evaluation of information systems is increasingly drawing more and more attention. The purpose of this paper is to propose a novel method integrated extension theory and unascertained method to classification for information systems (IS) security. The risks of information system are established on the basis of analyzing the factors affecting the risks of information system by applying the unascertained measure theory. Using matter-element theory, the extensibility of IS security is analyzed, and then the framework of matter-element models for IS security is formed. The matter element model of IS security risk evaluation is established using matter element model theory based on extension engineering method. Theoretical analysis and the design principle of the proposed method are described in detail. Some simulations are performed to demonstrate the effectiveness of the proposed extension and unascertained method. The result is believed to provide new means and ideas for the evaluation of IS security. The method is suitable for evaluating the risks of IS. Its evaluating results are reasonable. An example of practical application is given to show the effectiveness of this method. The model is more efficient than former models and can be easily realized in practice.

Intelligent reasoning and management decision making with grey rough influence diagrams

2016 ◽  
Vol 9 (4) ◽  
pp. 336-353 ◽  
Author(s):  
Haiqing Hu ◽  
Bingqiang Liu ◽  
Tao Shen
Keyword(s):  
Information Systems ◽  
Decision Analysis ◽  
Rough Sets ◽  
Grey System Theory ◽  
Approximate Reasoning ◽  
Influence Diagrams ◽  
Uncertain Information ◽  
Content Type ◽  
Intelligent Decision ◽  
Interval Valued

Purpose Influence diagrams (IDs) have been widely applied as a form of knowledge expression and a decision analysis tool in the management and engineering fields. Relationship measurements and expectation values are computed depending on probability distributions in traditional IDs, however, most information systems in the real world are nondeterministic, and data in information tables can be interval valued, multiple valued and even incomplete. Consequently, conventional numeric models of IDs are not suitable for information processing with respect to imprecise data whose boundaries are uncertain. The paper aims to discuss these issues. Design/methodology/approach The grey system theory and rough sets have proved to be effective tools in the data processing of uncertain information systems, approximate knowledge acquisition and representation are also the objectives in intelligent reasoning and decision analysis. Hence, this study proposes a new mathematical model by combining grey rough sets with IDs, and approximate measurements are used instead of probability distribution, an implicational relationship is utilized instead of an indiscernible relationship, and all of the features of the proposed approach contribute to deal with uncertain problems. Findings The focus of this paper is to provide a more comprehensive framework for approximate knowledge representation and intelligent decision analysis in uncertain information systems and an example of decision support in product management systems with the new approach is illustrated. Originality/value Collaboration of IDs and grey rough sets is first proposed, which provides a new mathematical and graphical tool for approximate reasoning and intelligent decision analysis within interval-valued information systems.

Evaluating the Visual Demand of In-Vehicle Information Systems

2011 ◽  
Vol 3 (1) ◽  
pp. 1-21 ◽  
Author(s):  
Ainojie Alexander Irune
Keyword(s):  
Information Systems ◽  
Empirical Studies ◽  
Appropriate Use ◽  
Iterative Development ◽  
Novel Method ◽  
Vehicle Information ◽  
The University ◽  
Phd Thesis ◽  
Driver Support ◽  
Selection Of

In-vehicle information systems (IVIS) provide a variety of driver support and infotainment functionality; however, there is a growing concern that the resulting engagement with IVIS could present significant sources of distraction to drivers. This paper summarises the PhD thesis of Dr Ainojie Alexander Irune, which was awarded at the University of Nottingham in December 2009. The primary aims of the research were to develop a framework to aid the selection of an appropriate HF/HCI method, for use at particular stages in the design process, and to develop a novel method (with a focus on glance duration) for assessing the visual demand afforded by IVIS. Five empirical studies are reported in the thesis. In the first study, interviews were conducted with subject experts and the results were combined with the literature to provide guidance regarding the appropriate use of human factors methods. The remaining four studies present an iterative development of a novel method capable of predicting the visual demand imposed by an IVIS.

The removal and morphology of intact biofilms from implanted venous access devices

1995 ◽  
Vol 53 ◽  
pp. 1020-1021
Author(s):  
M.A. Gregory ◽  
G.P. Hadley
Keyword(s):  
Patient Selection ◽  
Surgical Oncology ◽  
Venous Access ◽  
Common Procedure ◽  
Indwelling Catheters ◽  
Careful Patient ◽  
Novel Method ◽  
The Subject ◽  
Vascular Catheters ◽  
Venous Access Devices

The insertion of implanted venous access systems for children undergoing prolonged courses of chemotherapy has become a common procedure in pediatric surgical oncology. While not permanently implanted, the devices are expected to remain functional until cure of the primary disease is assured. Despite careful patient selection and standardised insertion and access techniques, some devices fail. The most commonly encountered problems are colonisation of the device with bacteria and catheter occlusion. Both of these difficulties relate to the development of a biofilm within the port and catheter. The morphology and evolution of biofilms in indwelling vascular catheters is the subject of ongoing investigation. To date, however, such investigations have been confined to the examination of fragments of biofilm scraped or sonicated from sections of catheter. This report describes a novel method for the extraction of intact biofilms from indwelling catheters.15 children with Wilm’s tumour and who had received venous implants were studied. Catheters were removed because of infection (n=6) or electively at the end of chemotherapy.

Cost Containment in Information Systems

1984 ◽  
Vol 1 (1) ◽  
pp. 175-185
Author(s):  
Michael E. D. Koenig
Keyword(s):  
Information Systems ◽  
Cost Containment
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