A fine-grain approach for evaluating the quality of context

2011 ◽  
Author(s):  
Zied Abid ◽  
Sophie Chabridon
Keyword(s):  
Fine Grain ◽  
Quality Of Context

scholarly journals A Middleware with Comprehensive Quality of Context Support for the Internet of Things Applications

Sensors ◽  
2017 ◽  
Vol 17 (12) ◽  
pp. 2853 ◽  
Author(s):  
Berto Gomes ◽  
Luiz Muniz ◽  
Francisco da Silva e Silva ◽  
Davi dos Santos ◽  
Rafael Lopes ◽  
...  
Keyword(s):  
Internet Of Things ◽  
The Internet ◽  
Quality Of Context ◽  
The Internet Of Things

scholarly journals Study of a Context Quality Model for UbiPri Middleware

2020 ◽  
Author(s):  
Diandre de Paula ◽  
Daniel Saraiva ◽  
Romeiro Natália ◽  
Nuno Garcia ◽  
Valderi Leithardt
Keyword(s):  
Quality Indicators ◽  
Data Privacy ◽  
Context Information ◽  
Adaptation Process ◽  
Context Aware ◽  
Quality Model ◽  
Context Aware Computing ◽  
Quality Of Context ◽  
The Impact

With the growth of ubiquitous computing, context-aware computing-based applications are increasingly emerging, and these applications demonstrate the impact that context has on the adaptation process. From the context, it will be possible to adapt the application according to the requirements and needs of its users. Therefore, the quality of the context information must be guaranteed so that the application does not have an incorrect or unexpected adaptation process. But like any given data, there is the possibility of inaccuracy and/or uncertainty and so Quality of Context (QoC) plays a key role in ensuring the quality of context information and optimizing the adaptation process. To guarantee the Quality of Context it is necessary to study a quality model to be created, which will have the important function of evaluating the context information. Thus, it is necessary to ensure that the parameters and quality indicators to be used and evaluated are the most appropriate for a given type of application. This paper aims to study a context quality model for the UbiPri middleware, defining its quality indicators to ensure its proper functioning in the process of adaptation in granting access to ubiquitous environments. Keywords: QoC, Model, Context-Aware, Data, Privacy

The Effect of Grain Refiners for Aluminium Alloy Containing Mn-Ti-Sr Dispersoid

2006 ◽  
Vol 519-521 ◽  
pp. 449-454
Author(s):  
V.T. Vacariu ◽  
Aurelian Buzaianu ◽  
Eugeniu Vasile ◽  
R. Trusca ◽  
Petru Moldovan
Keyword(s):  
Volume Fraction ◽  
Lightweight Design ◽  
High Volume ◽  
Sr Modification ◽  
Fine Grain ◽  
Homogenization Time ◽  
Structural Applications ◽  
Complex Shapes ◽  
Metallic Compounds

The new structural applications of aluminum materials are determined by intelligent lightweight design: the demand of safety, ecology, recycling and by economics. Al-Si alloys allow complex shapes to be cast. Metallurgical a high volume fraction of fine dispersoid which are less about 0.1 microns in size are useful for retaining a fine grain. In the 6061 series of alloys, iron combines with aluminium and silicon to form two types of commune inter-metallic, (beta AlFeSi and alpha AlFeSi).The type of inter-metallic that is present these alloys will have an important bearing on the homogenization time, workability and quality of the surface finish. The microstructure of the as-cast samples was evaluated by electronic microscopy and the morphology of inter-metallic compounds related to the efficiently modification. Mn-Ti-Sr modification of Al-alloys is normally accompanied by an increase in porosity in the casting.

Evaluation of Quality of Context Information in U-Health Smart Homes

2012 ◽  
pp. 179-215 ◽  
Author(s):  
José Bringel Filho ◽  
Nazim Agoulmine
Keyword(s):  
Health Systems ◽  
Smart Homes ◽  
Well Being ◽  
Context Information ◽  
Context Aware ◽  
Daily Lives ◽  
Quality Of Context ◽  
The Impact ◽  
Health And Well Being

Ubiquitous Health (U-Health) smart homes are intelligent spaces capable of observing and correctly recognizing the activities and health statuses of their inhabitants (context) to provide the appropriate support to achieve an overall sense of health and well-being in their inhabitants’ daily lives. With the intrinsic heterogeneity and large number of sources of context information, aggregating and reasoning on low-quality raw sensed data may result in conflicting and erroneous evaluations of situations, affecting directly the reliability of the U-Health systems. In this environment, the evaluation and verification of Quality of Context (QoC) information plays a central role in improving the consistency and correctness of context-aware U-Health applications. Therefore, the objective of this chapter is to highlight the impact of QoC on the correct behavior of U-Health systems, and introduce and analyze the existing approaches of modeling, evaluating, and using QoC to improve its context-aware decision-making support.

A Perspective about the Application of Quality of Context in U-Learning Environments

2016 ◽  
pp. 410-432 ◽  
Author(s):  
Felipe Becker Nunes ◽  
Fabricio Herpich ◽  
Gleizer Bierhalz Voss ◽  
Roseclea Duarte Medina
Keyword(s):  
Learning Environments ◽  
Usability Testing ◽  
Quality Parameters ◽  
Context Information ◽  
Advantages And Disadvantages ◽  
Quality Of Context

U-Learning environments collects context information relative to user's preferences and needs, but this information is typically very volatile. For this reason, Quality of Context is aimed at treating this information by applying quality parameters. This chapter aims to help the reader understand how the quality of context information can be treated in U-Learning environments, which are the main theoretical bases, technologies that support them and what are the methods, advantages and disadvantages related to this approach. In addition, specific cases of development and application of technologies and strategies involving Quality of Context are presented to illustrate all the concepts described. The results of usability testing related to the SUS questionnaire showed that the developed environment described in the case of study operated satisfactorily, based on the assessments made by the group of users who tested the modules and their operation.

The Issue of Increasing the Products Durability Made of Fine-Grain Concrete

2018 ◽  
Vol 931 ◽  
pp. 537-543
Author(s):  
Elizaveta O. Lotoshnikova ◽  
Leonid M. Usepyan ◽  
Valeriya N. Telegina ◽  
Elzara O. Tsybenko
Keyword(s):  
Experimental Approach ◽  
Raw Materials ◽  
Practical Implementation ◽  
Technological Method ◽  
Fine Grain ◽  
Materials Used

The article presents a technique for assigning the composition of the agglutinant sand, which is based on the calculation and experimental approach to determining the composition, taking into account the quality of raw materials used and the requirements for the properties of concrete products produced. The obtained results served as the basis for the practical implementation of the proposed technological method of increasing the small-sized products durability made of fine-grain concrete.

Managing Quality of Context in Pervasive Computing

2006 ◽  
Author(s):  
Yingyi Bu ◽  
Tao Gu ◽  
Xianping Tao ◽  
Jun Li ◽  
Shaxun Chen ◽  
...  
Keyword(s):  
Pervasive Computing ◽  
Quality Of Context
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