title: Determining the volumetric characteristics of a passive linear electromagnetic damper for vehicle applications.

authors: Duke, Mike

subjects: Transport & Vehicle Engineering

abstract: Previous research has shown that passive electromagnetic damping could be feasible for automotive applications, but there would be a severe weight penalty, particularly in light weight vehicles. With modern advances in permanent magnets the feasibility of passive electromagnetic dampers is re-examined. A model of a permanent magnet and coil system is developed and validated in small scale. This magnet model is used to model a dynamic damper system which is again tested. This dynamic model is then scaled up to a two degree of freedom system to determine the damping for a quarter car model. Two damper designs are created each of which would produce a damping coefficient of 1,600 Ns/m. The proposed dampers require more than three times the volume of the equivalent hydraulic dampers.

text: Determining the volumetric characteristics of a passive linear electromagnetic damper for vehicle applications. Previous research has shown that passive electromagnetic damping could be feasible for automotive applications, but there would be a severe weight penalty, particularly in light weight vehicles. With modern advances in permanent magnets the feasibility of passive electromagnetic dampers is re-examined. A model of a permanent magnet and coil system is developed and validated in small scale. This magnet model is used to model a dynamic damper system which is again tested. This dynamic model is then scaled up to a two degree of freedom system to determine the damping for a quarter car model. Two damper designs are created each of which would produce a damping coefficient of 1,600 Ns/m. The proposed dampers require more than three times the volume of the equivalent hydraulic dampers.

year: 2017

title: A subset of precise UML for Model-based Testing

authors: Bouquet, Fabien

subjects: computer science

abstract: This paper presents an original model-based testing approach that takes a UML behavioural view of the system under test and automatically generates test cases and executable test scripts according to model coverage criteria. This approach is embedded in the LEIRIOS Test Designer tool and is currently deployed in domains such as Enterprise IT and electronic transaction applications. This model-based testing approach makes it possible to automatically produce the traceability matrix from requirements to test cases as part of the test generation process. This paper defines the subset of UML used for model-based testing and illustrates it using a small example.

text: A subset of precise UML for Model-based Testing This paper presents an original model-based testing approach that takes a UML behavioural view of the system under test and automatically generates test cases and executable test scripts according to model coverage criteria. This approach is embedded in the LEIRIOS Test Designer tool and is currently deployed in domains such as Enterprise IT and electronic transaction applications. This model-based testing approach makes it possible to automatically produce the traceability matrix from requirements to test cases as part of the test generation process. This paper defines the subset of UML used for model-based testing and illustrates it using a small example.

year: 2007

title: Comment

authors: Mitchell, Linda

abstract: This issue of Early Childhood Folio has a diverse range of articles focusing on highly relevant and current pedagogical issues. Several involve case studies, where in-depth analysis enables opportunities for learning and development afforded by pedagogy and the environment to be highlighted. Some offer new methodological approaches, including the use of a “mosaic approach” to investigate “voices” of child and adult participants, kaupapa Māori methodology to illustrate culturally valid forms of assessment within contemporary Māori early childhood settings, and the use of a model of participation in home-based settings

text: Comment This issue of Early Childhood Folio has a diverse range of articles focusing on highly relevant and current pedagogical issues. Several involve case studies, where in-depth analysis enables opportunities for learning and development afforded by pedagogy and the environment to be highlighted. Some offer new methodological approaches, including the use of a “mosaic approach” to investigate “voices” of child and adult participants, kaupapa Māori methodology to illustrate culturally valid forms of assessment within contemporary Māori early childhood settings, and the use of a model of participation in home-based settings

year: 2012