1,653 research outputs found
Sviluppo di un sistema di taratura per casco strumentato
No full textIn this work, a new methodology for the dynamic calibration of a sensorized helmet is proposed. The helmet is a medical device for head motion detection, based on gyroscopes and linear accelerometers. It has been designed for monitoring head motion in patients undergoing neuro rehabilitation.
While a few solutions are available in the literature for the calibration of this particular type of helmet, no solution currently exists that allows for a complete dynamic calibration by taking into account actual head movements.
With the aim of obtaining such a dynamic calibration solution, in this work an instrumented test bench has been designed that replicates typical head movements. Ranges and frequencies for each specific head movement type in the frontal, sagittal and median plane have been retrieved from the literature; data is related to both patients and healthy subjects. Two dynamic calibration prototypes have been produced as the result of subsequent design iterations: the first is capable of reproducing only a few types of principal motions, while the second and final one allows for a complete reproduction of all the principal head movement types. The prototypes have been subjected to experimental testing; the results are analyzed and discussed in the thesis.Il presente lavoro di tesi ha avuto per oggetto lo sviluppo di una nuova metodologia di taratura dinamica di caschi strumentati, utilizzati in campo neuro riabilitativo per rilevare i moti del capo dei pazienti. È stato realizzato un sistema in grado di riprodurre i movimenti tipici della testa.
Il lavoro è iniziato con una ricerca bibliografica per definire i campi di variabilità dei parametri di taratura, ovvero le rotazioni tipiche del capo sul piano frontale, sagittale e trasversale, nonché i loro campi di frequenza. In letteratura si trovano diverse configurazioni per la sensorizzazione del caschetto, con accelerometri e giroscopi, e diversi sistemi ad oggi utilizzati per la loro taratura. Ma non esistono sistemi sviluppati ad hoc, come questo, per poter fare una taratura dinamica, riproducendo proprio le condizioni operative del casco strumentato.
Sono stati realizzati e testati due prototipi, il secondo dei quali, il più complesso, realizza tutte le rotazioni del capo definite dall’analisi bibliografica
Staley, Roberta
No full textcurrentAcademic Biography
BA (University of Calgary)
Diploma Journalism (Grant MacEwan)
MA Liberal Studies (Simon Fraser University)
Roberta Staley is an author, a magazine editor and writer, and a documentary filmmaker who has reported from such places as Afghanistan, Papua New Guinea, Kenya, El Salvador, Haiti, Colombia, Cambodia, South Africa, Israel, and New Zealand. She currently edits Enterprise magazine, and is a contributor to BC Business, the South China Morning Post Magazine, Ms. Magazine, Trek, the Canadian Chemical News, Corporate Knights, and Sculpture, among others. She is also a columnist for Just for Canadian Doctors/Dentists magazines. Roberta has published her first book, titled Voice of rebellion : how Mozhdah Jamalzadah brought hope to Afghanistan. It is a biography of Afghan-Canadian human rights activist Mozhdah Jamalzadah
Measurement of stress and strain by a thermocamera
No full textIn this paper thermoelaticity and correlation of thermal images are proposed as joint measurement techniques to perform a "full field" measurement of stress and strain on the surface of mechanical components dynamically loaded. Thermoelasticity allow to measure the sum of the principal stress on the surface of a dynamically loaded mechanical component, therefore some researcher proposed the use of data processing methods and combined measurement techniques (using also photoelasticity for example) in order to mesure also the single stress components. Here a new measurement and testing technique, based on the recording of thermal images of a random emissivity pattern and of local thermal fluctuation is proposed to obtain both stress and strain on the specimen surface. Tests has been performed using simple specimen in classical configuration on laboratory testing machines. Results and possibility of this new measurement technique are discussed
Postface. Pour une esthétique hétéronome et plurielle
No full textBy discussing the essays collected in the volume, Roberta Dreon's paper focuses on the reasons that justify the very idea of a pragmatist aesthetic. This is done by considering that the association between the traditional, contemplative, disinterested, and anti-instrumental conception of aesthetic experience seems to preclude the possibility of characterizing it in practical or pragmatic terms.
The author argues that this is achieved on the one hand by a rethinking of the very notion of the "aesthetic" found in the philosophies of James and Dewey. This allows for supporting the idea that artistic practices are grounded in ordinary experience, and particularly in their aesthetic-qualitative aspects. On the other hand, the author argues that Dewey's aesthetics was convincingly pragmatist to the extent that it lucidly focused on the consequences of the autonomist conception of art and proposed a continuist, meliorist, and pluralist alternative capable of providing effective contributions to democratic and inclusive development
È possibile una teoria della razionalità? Il contributo di Hilary Putnam
No full textSecondo Putnam argomentare sulla natura della razionalità è l’attività per eccellenza dei filosofi. Sulla traccia di Putnam, l’autore esamina le principali teorie della razionalità presenti nel pensiero contemporaneo. Tali concezioni hanno il difetto di essere unilaterali, mentre la nozione di razionalità si rivela complessa, quindi una teoria della razionalità è possibile, benché non possa essere definitiva. In seguito l’autore cerca di individuare le caratteristiche fondamentali che competono alla razionalità, in opposizione tanto alla concezione positivista quanto al relativismo.According to Putnam, arguing about the nature of rationality is the typical task of philosophers. Following Putnam, in this paper the author examines the main theories of rationality to be found in contemporary thought. Whereas such views betray their own one-sidedness, the idea of rationality is very complicated. As a consequence, a theory of rationality is possible, but cannot be definitive. Furthermore, the author tries to highlight the chief features pertaining to rationality, opposing positivsm as well as relativism
First person - Roberta Besio
No full textFirst Person is a series of interviews with the first authors of a selection of papers published in Disease Models & Mechanisms (DMM), helping early-career researchers promote themselves alongside their papers. Roberta Besio is first author on 'Cellular stress due to impairment of collagen prolyl hydroxylation complex is rescued by the chaperone 4-phenylbutyrate', published in DMM. Roberta is a postdoc in the lab of Antonella Fortino at University of Pavia, Italy, investigating collagen and genetic diseases of the connective tissue
Family altruism and incentives
No full textThe author builds on the altruistic model of the family, to explore the strategic interaction between altruistic parents, and selfish children, when children's efforts are endogenous. If there is uncertainty about the amount of income the children will realize, and if parents have imperfect information, the children have an incentive to exert little effort, and to rely on their parent's altruistically motivated transfers. Because of this, parents face a tradeoff between the insurance that bequests implicitly provide their children, and the disincentive to work prompted by their altruism. The author shows that if parents can credibly commit to a pattern of transfers, they will choose not to compensate children in bad outcomes, as much as predicted by the standard (no uncertainty, no asymmetric information) dynastic model of the family. Alternatively, parents may choose to forgo any insurance, and offer a fixed level of bequest, to elicit greater effort from their children. The optimal transfers structure that the author derives, reconciles the predictions of the altruistic family model, with much of the existing evidence on inter-generational transfers, which suggests that parents compensate only partially, or not at all, for earnings differentials among their children. Moreover, the author shows that Ricardian equivalence holds in this setup, except when non-negativity constraints are binding.Economic Theory&Research,Environmental Economics&Policies,Health Economics&Finance,Educational Sciences,Safety Nets and Transfers
Correction to : A Framework for Understanding the Empowerment Effects of Telecentres on Rural Communitiesin Developing Countries Sellina Khumbo Kapondera, Roberta Bernardi, and Niki Panteli Correction to: Chapter “A Framework for Understanding the Empowerment Effects of Telecentres on Rural Communities in Developing Countries” in: P. Nielsen and H. C. Kimaro (Eds.): Information and Communication Technologies for Development, IFIP AICT 551, (10.1007/978-3-030-18400-1_9))
No full textIn the originally published version of this chapter, the name of the second author Roberta Bernardi was incorrect. The name of the author has been corrected
- …
