Search results for "Positioning"
showing 10 items of 256 documents
Positioning system for assembly and manufacturing tasks
2019
The paper presents a two-axis positioning system using asynchronous motors as actuation devices. Theuse of asynchronous motors reduces the overall cost of the system, while providing actuating torques superior to the ones provided by stepping motors. The system is controlled by mean of a programmable logic controller (PLC) and two voltage-frequency inverters fitted with motion control cards. In contrasts to a stepping motor system, which works in open loop mode, the proposed system uses closed loop control on each axis. The motion loop is closed by means of an incremental encoder.
People with memory illnesses and their spouses as actors in the hybrid care model
2023
Objective: The study analysed how its participants positioned themselves and other people as actors in daily life, and what matters they portrayed as meaningful in seeking and receiving support in daily life. Background: Family care has traditionally played an important role in elder care in Finland. Current policy goals will further increase the importance of family care, yet research on how people with memory illnesses and their spouses perceive care arrangements is scarce. Method: The study drew from theory of relational agency and positioning theory. The data came from semi-structured, in-depth interviews (10) of home-dwelling people diagnosed with a memory illness and their spouses. Th…
ETP/GDOP Behavior Study for N-Sensors Arrays ina Multilateration Radar System
2009
In this paper, we evaluated the ETP (Expected Theoretical Precision) and GDOP (Geometric Dilution Of Precision) enhancement related to the number of sensors in a Multilateration radar system. An introduction about the principles of the Multilateration radar system basis operation is described, then, the formulation for evaluation the ETP/GDOP of the 3D positioning is shown. We observed that the ETP and GDOP enhance with the increase of the number of sensors. A substantial improvement was obtained until nine sensors but, for more sensors that improvement is reduced. Results for a 75km×75km area are shown, including LAM (Local Area Multilateration) and WAM (Wide Area Multilateration) settings…
Innovation in Traditional Food Products
2016
International audience; Innovation is widely accepted as one of the keys to being successful. However, companies can innovate and still fail if markets fail to accept the innovation. In most cases, the acceptance of an innovation depends on the innovation itself and also on the product to which it is applied. In this chapter acceptance of different innovations in traditional food products is investigated, thus focusing on the definition of the "traditional" and "innovation" concepts from the consumer's perspective. Qualitative and quantitative approaches are combined to better understand and predict the possibilities of success when applying different generic and specific innovations in tra…
RoadMic: Road Surface Monitoring Using Vehicular Sensor Networks with Microphones
2010
Road surface analysis including pothole reports is an important problem for road maintainers and drivers. In this paper we propose a methodology for pothole detection using mobile vehicles equipped with off the shelf microphone and global positioning devices attached to an on-board computer. The approach is generic enough to be extended for other kind of event detection using different sensors as well. The vehicles are driving on public streets and measuring pothole induced sound signals. Our approach was tested and evaluated by real world experiments in a road segment for which we had established the ground truth beforehand. The results show pothole detection with high accuracy despite the…
Benign paroxysmal positional vertigo following whiplash injury: a myth or a reality?
2011
Abstract Objective The aim of the study was to evaluate the true incidence, diagnosis, and treatment of benign paroxysmal positional vertigo (BPPV) arising after whiplash injury and to distinguish this type of posttraumatic vertigo from other types of dizziness complained after trauma. Methods This was a retrospective study comprising patients referred to our center after whiplash injury. The patients were evaluated with neurotologic examination including bedside and instrumental tests. A Dizziness Handicap Inventory evaluating the symptoms of patients was submitted before and after treatment and was evaluated. The BPPV patients were separately evaluated from those with cervicogenic vertigo…
Managing Relations: a study of positioning strategies in British international discourse
2008
This work deals with corpus-assisted research into speaker ideological positioning in the language of diplomacy. It concentrates on the resources used by the foreign minister Margaret Beckett to construe the speaker “orientation” (Lemke 1992) through the analysis of the main participant in the discourse that is international community and the subject matter being debated namely terrorism. The findings have shown assertiveness and determination from the speaker by the use of contractive mechanisms. The image of the international community is based on cooperation and unity just like a family and it is appraised mainly through judgements of tenacity. These are the resources required to fight t…
Remote Sensing Geometric Corrections
2016
This article reviews the different aspects of geometrical processing of remote sensing data, discussing error sources and methods to determine the transformation from the image acquisition geometry to the output cartographic product. Resampling methods are discussed to transform the input image to the output geometry. Several practical examples of remote sensing platforms are discussed, including satellite cases and airborne sensors. Validation of the resulting geometrical processed products is also discussed. Spatial mosaicking techniques and multitemporal composites used to produce multisource integrated products and advanced applications are finally considered, keeping a perspective on t…
Posizionamenti transfemministi. Saperi situati e pratiche spaziali nel movimento Non Una di Meno
2021
The aim of this paper is to analyse, through the toolbox of gender geography, the methodology of positionality and situated knowledge. The article examines some spatial practices of the transfeminist movement Non Una di Meno that involve us both as researchers and activists. The different forms of territorialisation and ways of “doing with” the space of the movement, are here presented through the specific cases of the demonstrations organised during the Covid-19 pandemic on the 25th of November 2020 and 8th March 2021. This enables us to present the methodology of positionality, and to analyse how feminist spatial practices can be the object of research and vice versa.
Integration of WiFi ToF Positioning System in the Open, Flexible and Adaptive WiSHFUL Architecture
2017
We integrate a prototypeWiFi Time-of-Flight (ToF) ranging and positioning system in the WiSHFUL software platforms and hardware radios for experimental prototyping. Users have access to ToF measurements as well as computed positions through unified programming interfaces that make possible to investigate innovative positioning and networking solutions. TRUE pub