1,720,971 research outputs found
Magnetostriction in Ni rods under torsion: critical stress and srystall anisotropy effect
No full textCW laser annealing amorphous Fe40Ni40P14B6: effect on magnetostriction and Young modulus
No full textPotentialities and limits of magnetoelasticity applications for noise detection and attenuation
No full textStarting from the basic phenomena of direct and inverse magnetostriction, the status of art of actual application and material development are critically reviewed. Important developments in noise detection and control are pointed out and several innovations are also reported. On the other hand, the crucial improvements to be performed in material performance, devices techniques and modeling are clearly discussed. In particular the first characterization of a new device, based on a novel composite material made of magnetic particles dispersed in an elastic matrix, able of self-attenuation of vibrations also at the resonance frequency, is reported and discussed. Since some problems in vibration control are related to the induction of a spontaneous acoustic mode in the core of the device used for the oscillations detection and/or attenuation, this new system appears to be very interesting for the researchers community involved in noise control and monitoring
On-line Physics Laboratory Experiments: Research Activities in the LABNET2 Project
No full textThe recent growth of interest of teachers to introduce the use of computer as educational tool encourages the development of didactic environments so that the use of computer classrooms and the resources of the web become daily tools. An aspect of distance education not currently supported by most support environments – commercial and experimental – is related to the possibility of performing laboratory exercises remotely. In the present paper, we illustrate on-going research activities and experimentations within the project LABNET2 of the Italian Interuniversity Computer Science Consortium (CINI) in the National Laboratory for Multimedia and Telematics (ITEM) in Naples. ITEM runs a set of projects, called LABNET, for the experimentation of technologies of remote access to laboratories. Such projects foresee the creation of laboratories, into which real technical-scientific equipments are remotely accessible to teachers and students. Such objective is achieved through the realization of a suitable computer and network infrastructure and the development of necessary software applications. The research activities described here are aimed at remote management of a physics laboratory. By taking advantage of telematics and multimedia technologies, some experiments available in the Physics laboratory (called LAFIDIN) of the Engineering Faculty of the Federico II University of Naples have been made controllable remotely over the Internet. The remote management allows students to perform experimentations, control equipments and visualize the results of the experiments as if these were performed locally. The access to a real laboratory, even if realized through remote control, aims at a greater didactic effectiveness when compared to conventional techniques of virtual laboratories, supported by advanced environments for distance learning. In this paper, we discuss also results of trials run in cooperation with 10 high school institutes of the district of Naples and Avellino. Students performed physics experiments on remote equipments through Internet connection from their schools. During the execution of the experiments, students had the possibility to have a complete vision of what happens in the laboratory through a remote controlled video camera. The camera helps to improve the pedagogical effectiveness of the experiments, remarking the difference with computer simulated experiments
On-line Physics Laboratory Experiments: Research Activities in the LABNET2 Project
No full textThe recent growth of interest of teachers to introduce the use of computer as educational tool encourages the development of didactic environments so that the use of computer classrooms and the resources of the web become daily tools. An aspect of distance education not currently supported by most support environments – commercial and experimental – is related to the possibility of performing laboratory exercises remotely. In the present paper, we illustrate on-going research activities and experimentations within the project LABNET2 of the Italian Interuniversity Computer Science Consortium (CINI) in the National Laboratory for Multimedia and Telematics (ITEM) in Naples. ITEM runs a set of projects, called LABNET, for the experimentation of technologies of remote access to laboratories. Such projects foresee the creation of laboratories, into which real technical-scientific equipments are remotely accessible to teachers and students. Such objective is achieved through the realization of a suitable computer and network infrastructure and the development of necessary software applications. The research activities described here are aimed at remote management of a physics laboratory. By taking advantage of telematics and multimedia technologies, some experiments available in the Physics laboratory (called LAFIDIN) of the Engineering Faculty of the Federico II University of Naples have been made controllable remotely over the Internet. The remote management allows students to perform experimentations, control equipments and visualize the results of the experiments as if these were performed locally. The access to a real laboratory, even if realized through remote control, aims at a greater didactic effectiveness when compared to conventional techniques of virtual laboratories, supported by advanced environments for distance learning. In this paper, we discuss also results of trials run in cooperation with 10 high school institutes of the district of Naples and Avellino. Students performed physics experiments on remote equipments through Internet connection from their schools. During the execution of the experiments, students had the possibility to have a complete vision of what happens in the laboratory through a remote controlled video camera. The camera helps to improve the pedagogical effectiveness of the experiments, remarking the difference with computer simulated experiments
Magnetoelastic Stress and Strain Sensors.
No full textEncyclopedia of Sensors is the first encyclopedia ever published in the field of sensors. The multivolume encyclopedia will provide a complete coverage of most recent advances and emerging new sensor technologies in the fields of science, engineering and medicine. Although there are many books focused on sensors however no encyclopedic reference work has been published as of today. This encyclopedia will cover all aspects of sensor science and technology dealing with all types of sensor materials, their synthesis and spectroscopic characterization, sensor designs, fabrication and manufacturing techniques, sensor probes, features, physical, chemical and biosensors, their applications in electronics, photonic and optoelectronic industries, medicine, surface sensing, food industry, environmental engineering and nanotechnology. It is written for a wide range of audience from non-scientists to active scientists and engineers, professionals and experts working in the field of sensors
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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