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Graphic Design per i nuovi media
No full textLa tecnologia digitale è uno dei capolavori grafici del tempo attuale, che
influenza molti aspetti della nostra vita quotidiana. Con lo sviluppo rapido e notevole
di tale tecnologia, e con l’universo aperto dalle nuove tecnologie della
rappresentazione, la tecnologia digitale ha una struttura multi-dimensionale in cui la
natura procedurale, spaziale ed enciclopedica del computer s’interseca con
l’immaginazione e la fantasia dell’artista, diventando così disponibile per molte
persone e organizzazioni; queste la usano per creare molte opere grafiche per la TV, il
cinema, il teatro e il web, ossia tramite tutti i suoi aspetti: il computer con i suoi
software sofisticati, le macchine fotografiche, i scanner, le stampanti … ecc .
Possiamo dire che la stampa, la fotografia e il cinema sono le origini storiche che
introducono la progettazione grafica al computer e che seguono la sua fantastica
evoluzione di macchine ed applicazioni.L'importanza della ricerca consiste nell’uso della tecnologia digitale sul
design grafico, come la usa nella pubblicità, nei parti dei film cinematografici e i
videogiochi dopo essere state fusi in personaggi 3D, e dopo che è stata trattata con
effetti speciali del colore con l'uso di programmi del computer, per fare le
modificazioni. Questi correggono i colori o aggiungono ad essi i quadri colorati , i
cartoni animati, oppure con l'uso di recenti apparecchi di illuminazioni, lavorano
con questa tecnologia sviluppata. E’ anche importante la possibilità di usare gli
elementi creativi dai programmi grafici e la possibilità di usare questi elementi
alla costruzione dei designi grafici per la nuova media
A sensorimotor network for actions and intentions reading: a series of TMS studies
No full textInformation relevant for our social life are immediately processed by our brain. When
we walk in the street we easily and quite automatically adjust our path to avoid colliding
other people. Several social activities like working in a group, playing a sport, talking
with people and many others, all require the ability to carefully read others movements.
Thus, kinematics and postural information of others‟ body are a fundamental medium
for good survival in our social environment.
Along the reading of this manuscript a series of extensive and novel studies will
describe the role of sensorimotor cortices and their differential contribution in specific
action observation tasks. By means of transcranial magnetic stimulation (TMS) we
tested in healthy subjects both low and high cognitive level processes that may require
areas of the action observation network
L'ORDINAMENTO GIUDIZIARIO ALBANESE
No full textL'oggeto dello studio verte sulla evoluzione dell'ordinamento giudiziario albanese
Perylene derivatives in biological systems: application as fluorescent probes in models for nanotechnology
No full textHigh energy emission from the radiogalaxy Centaurus A and high energy photons and neutrinos from optically thin and thick sources
No full textPARAMETRI NEUROLINGUISTICI PER L'unspoken SPEECH
No full textQuesto lavoro si propone di decodificare il segnale con¬nesso con la voce prima che esso diventi segnale vocale. In sostanza la ricerca tenta la decodifi¬ca, tramite opportune regi¬strazioni EEG, del segnale connesso al pensiero di articolazione di alcuni foni vocalici del¬l’italiano ([a],[i],[u]); ai soggetti è stato richiesto di pensarli senza poi produrli acusticamente. La metodologia scelta, di tipo non-invasivo, per la cattura del se¬gnale cerebrale, da una parte svincola da alcune pro¬blematiche connesse alle pratiche in¬vasive (introduzione di elettrodi all'interno della cortec¬cia cerebrale) dall'altro, pone di fronte alla difficoltà dell'elici¬tazione dei dati con elettrodi sullo scalpo, non garantendo quella che genericamente po¬tremmo definire la qualità dei segna¬li.Questo lavoro cerca di rispondere, con l'impiego di tecniche nuo¬ve all'indagine sperimentale in campo linguistico, a come e dove avvenga la produzione degli stimoli motori, che comandano gli articolatori dei foni utilizzati nella comunicazione verbale e se essi siano da considerare, come vuole la teoria motoria di Lieberman (1985), delle invarianti linguistiche.Abbiamo cercato e abbiamo trovato l'esistenza di una diversità tra i comandi motori per i foni da noi scelti, e una diver¬sità, lieve, anche all'interno dello stesso gruppo di comandi motori relativi allo stesso fono e ciò si rivela molto importante sotto la prospettiva della teoria motoria che infatti li vedeva come degli invarianti. Si riscontra anche a livello di comandi motori una varietà che prima era assegnata alla sola esecuzione e addebitata a fenomeni di contatto o altro; questo stu¬dio sembrerebbe dimostrare che l'invarianza non si riscontra al livello di programmazione del gesto articolatorio di fonazione, ma bensì ad un livello più alto
ESSAYS ON INTERNATIONAL FINANCE: THE CARRY TRADE
No full textJudge Business School - Centre for financial analysis and policy; School of Economics and Finance, UTAS University of Tasmania
Modeling and Control of Robots with Compliant Actuation
No full textRobotics has always contemplated the most perfect existing machine, Human being, dreaming to realize robots able to catch a small spark of this shining light. Robots that are able to emulate human reasoning, but also human motion capabilities, robots
that are qualified to coexist and cooperate safely with humans, helping us in our everyday life.
Compliance is one of the most fascinating characteristic of human joints, it gives the possibility to crash an aluminum can but in the same way to grab gently a little flower. Thanks to compliant joints human beings are able to do very stiff and accurate motions or moving softly reducing possible injuries in case of unforeseen collisions.
Moreover it permits to store energy and release it quickly, for example for trowing objects or for jumping.
Inspired by human joints, robotics research groups started to investigate deeply this characteristic, trying either to emulate or reproduce compliant behaviors with robot joints.
These researches result in different views for obtaining compliant robot, they can be categorized in: passive compliance, where passive elements, i.e., springs, are arranged into the joint. In this way safety is improved, but the price is in term of performance;
active compliance obtained by controlling rigid joints such as to emulate compliant behaviors. The principal disadvantage of this approach is that energy cannot be stored, and some safety issue cannot be completely solved;
actively controlled passive compliance, where the characteristic of passive elements inside the device can be controlled in order to vary the joint compliance.
The third approach seams to be the best thread-off between safety, capabilities and performance, and as a results of this research field new devices, which permit to control the compliance of the joint, called Variable Stiffness/Impedance Actuator (VSA / VIA), have been developed.
These new actuators have been realized with different arrangement of motors and mechanisms with passive elements. In the first part of this dissertation
an overview of compliant actuators developed by research centers and universities around the world is shown, then a categorization, which groups all existing compliant actuators in three different typologies, is presented.
We characterize each compliant actuator typology, antagonistic variable stiffness actuator and serial variable stiffness actuator, by an equivalent arrangement of motors and flexible transmissions and we present the dynamic model associated to it.
From a control point of view these new devices give the possibility to control simultaneously the link motion and the joint stiffness behavior.
To take advantage of these capabilities new control methodology ere needed.
In the second part of the Thesis we present the control algorithms for compliant joints we developed:
i) A feedback linearization controller which permits to control the link position and the stiffness in a decoupled way.
ii) A gravity cancellation methodology which solve problematic due to the presence of gravity allowing a simpler and
more stable control of compliant joints.
iii) A collision detector which estimates external forces using a residual-based methodology.
iv) An online stiffness estimator needed to control compliant joints.
All methods proposed are developed for each of the three typologies of compliant actuators, and their effectiveness is proved by simulations and experiments.European Commission Sixth Framework Programme as part of the project PHRIENDS under grant no. 045359 and the FP7 ICT-287513 SAPHARI project
The folding problem simplified: proteins with nearly identical sequence but different structure and function
No full textOrientation models of optical High Resolution Satellite Imagery: definition, implementation and validation of original algorithms
No full textHigh resolution satellite imagery became available to civil users in 1999 with the launch of Ikonos, the first civil satellite offering a spatial resolution of 1 m. Since then other high resolution satellites have been launched, among which there are EROS-A (1.8 m), QuickBird (0.61 m), Orbview-3 (1 m), EROS-B (0.7 m), Worldview-1 (0.5 m) and GeoEye-1 (0.41 m), with many others being planned to launch in the near future.
High resolution satellite imagery is now available in different formats and processing levels at an affordable price, so that they already represent a possible alternative to aerial imagery, for cartographic applications and orthophoto production, especially for areas where the organization of photogrammetric surveying may be critical.
Moreover, an increasing demand for terrain modelling exists so that almost all the satellites have along-track stereo acquisition capability. Many new satellites dedicated to stereo viewing, for example Cartosat-1 (2.5 m), have been launched. This enables the generation of Digital Elevation Models (DEMs) and Digital Surface Models (DSMs), and also for 3D feature extraction (e.g. for city modelling).
The geomatic utilizations of satellite imagery for cartographic applications and terrain modelling require a high level geometric correction through image orientation.
Some fundamental features related to the sensor models and their parameters estimation, both for single images and stereopairs orientation, were addressed and some real applications were discussed.
In details, they were concerned both physical sensor models (also called rigorous models) and generalized sensor models (also called RPC models) for the orientation of basic images (level 1A) and of the image projected onto a specific object surface (usually an expanded ellipsoid derived from the WGS84) (level 1B). As regards the rigorous models, a thorough investigation of the fundamentals of their functional model was developed and the problem of parameters estimability was concerned, proposing a solution based on SVD and QR decomposition. RPC models were discussed not only with respect possible refinements by zero and first order transformations but also (and mainly) with respect the RPCs generation, based on previously established rigorous model; thanks to SVD and QR decomposition, it was showed that many RPCs are not estimable parameters, therefore they are not necessary to obtain the best achievable accuracy level.
Real applications demonstrated that rigorous and RPC models both for Level 1A and Level 1B imagery can provide orientation accuracy at 1-1.5 pixel level in the horizontal components, and at 1-2 pixel level in the height for stereopairs (even better with Cartosat-1 and slightly worse with EROS-1)