Search results for " video"

Etnografia e MMORPG: Virtual ethnography and videogamers

2011

Games studies etnografia MMORPG videogiochi

SIMaging the City. The Educational Use of Video Games in a Youth Club of Palermo (Italy)

2013

Punchline behind the hotspot : structures of humor, puzzle, and sexuality in adventure games (with Leisure Suit Larry in Several Wrong Places)

2021

Back in the late 1970s and early 1980s, during the embryonic era of computers, hackers, and all that digitalized punk jazz, who would have guessed that one of the period’s juvenile narrative arts—“interactive fiction” it was called at the time—would soon lead to a pop cultural revolution? A young scholar named Mary Ann Buckles did. Having spent years analyzing a piece of software that the present history knows as the most influential of all computerized text-based playthings, Adventure, in 1985, Buckles eventually completed her doctoral dissertation with a first-ever focus on something that had thus far been struggling to be taken seriously by cultural critics: storygames running on compute…

Active Learning Methods for Efficient Hybrid Biophysical Variable Retrieval

2016

Kernel-based machine learning regression algorithms (MLRAs) are potentially powerful methods for being implemented into operational biophysical variable retrieval schemes. However, they face difficulties in coping with large training data sets. With the increasing amount of optical remote sensing data made available for analysis and the possibility of using a large amount of simulated data from radiative transfer models (RTMs) to train kernel MLRAs, efficient data reduction techniques will need to be implemented. Active learning (AL) methods enable to select the most informative samples in a data set. This letter introduces six AL methods for achieving optimized biophysical variable estimat…

Multi-temporal and Multi-source Remote Sensing Image Classification by Nonlinear Relative Normalization

2016

Remote sensing image classification exploiting multiple sensors is a very challenging problem: data from different modalities are affected by spectral distortions and mis-alignments of all kinds, and this hampers re-using models built for one image to be used successfully in other scenes. In order to adapt and transfer models across image acquisitions, one must be able to cope with datasets that are not co-registered, acquired under different illumination and atmospheric conditions, by different sensors, and with scarce ground references. Traditionally, methods based on histogram matching have been used. However, they fail when densities have very different shapes or when there is no corres…

Sindrome del tunnel carpale: malattia professionale o patologia correlata al lavoro?

2011

La sindrome del tunnel carpale costituisce la più frequente neuropatia da compressione dell’arto superiore, originando dall’intrappolamento del nervo mediano nel canale carpale. Nel determinismo della sua comparsa risultano coinvolti numerosi fattori (precedenti fratture, traumatismi cronici, sport, hobbies, attività casalinghe). Vieppiù, è noto che tale malattia riconosce come primo momento etiopatogenetico non solo ripetuti movimenti di flesso-estensione del polso, ma anche malattie sistemiche o condizioni parafisiologiche (menopausa, gravidanza). La sindrome del tunnel carpale, se “secondaria” si manifesta generalmente con carattere di bilateralità soprattutto in donne tra i 30 ed i 60 a…

Analisi video-oculografica degli smooth pursuit in pazienti affetti da schizofrenia e loro consanguinei

2009

Triblock SEBS/DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity

2021

[EN] A set of styrene-ethylene-butylene-styrene triblock copolymer (SEBS) membranes with 10 or 25 wt.% divinyl-benzene (DVB) as a crosslinking agent were prepared and validated. Physicochemical characterization revealed suitable hydrolytic and thermal stability of photo-crosslinked membranes containing 25%wt. DVB and post-sulfonated. These compositions were evaluated in H2/O2 single cells, and electrical and proton conductivities were furtherly assessed. The membranes with the milder post-sulfonation showed greater proton conductivity than those with excessive sulfonation. In terms of electrical conductivity, a universal power law was applied, and the values obtained were low enough for bei…

Versatile optimization-based speed-up method for autofocusing in digital holographic microscopy

2021

We propose a speed-up method for the in-focus plane detection in digital holographic microscopy that can be applied to a broad class of autofocusing algorithms that involve repetitive propagation of an object wave to various axial locations to decide the in-focus position. The classical autofocusing algorithms apply a uniform search strategy, i.e., they probe multiple, uniformly distributed axial locations, which leads to heavy computational overhead. Our method substantially reduces the computational load, without sacrificing the accuracy, by skillfully selecting the next location to investigate, which results in a decreased total number of probed propagation distances. This is achieved by…

Echovirus 1 Endocytosis into Caveosomes Requires Lipid Rafts, Dynamin II, and Signaling EventsV⃞

2004

Binding of echovirus 1 (EV1, a nonenveloped RNA virus) to the α2β1 integrin on the cell surface is followed by endocytic internalization of the virus together with the receptor. Here, video-enhanced live microscopy revealed the rapid uptake of fluorescently labeled EV1 into mobile, intracellular structures, positive for green fluorescent protein-tagged caveolin-1. Partial colocalization of EV1 with SV40 (SV40) and cholera toxin, known to traffic via caveosomes, demonstrated that the vesicles were caveosomes. The initiation of EV1 infection was dependent on dynamin II, cholesterol, and protein phosphorylation events. Brefeldin A, a drug that prevents SV40 transport, blocked the EV1 infection…