1,720,988 research outputs found
Ascoli ai Tempi dell'Antica Quintana: 1377-1496
No full textIl volume ricostruisce, in un'ottica multidisciplinare, la genesi ed i significati di uno dei più famosi giochi storici a cavallo italiani nel contesto della festa patronale e del valore che essa aveva nel libero Comune medioevale, indagando la Quintana, nei suoi riti e cerimoniali, in rapporto alla cultura cittadina ed al tessuto antropologico-religioso, socio-politico ed economico che le ha dato vita
I PAPI MARCHIGIANI. CLASSI DIRIGENTI, COMMITTENZA ARTISTICA, MECENATISMO URBANO DA GIOVANNI XVIII A PIO IX
No full text
Effects of audio-tactile floor augmentation on perception and action during walking: preliminary results
No full textTwo pilot experiments have been conducted to investigate the influence of auditory and underfoot tactile cues respectively on perception and action during walking. The for- mer experiment shows that illusory tactile perception can be generated, biased by the intensity of auditory cues in the low-frequency region. The latter experiment suggests that non-visual foot-level augmentation may influence the gait cycle in normally able subjects. In the respective limits of significance, taken together both experiments suggest that the introduction of ecological elements of augmented reality at floor level may be exploited for the development of novel multimodal interfaces
Numerical methods for a nonlinear impact model: A comparative study with closed-form corrections
Full text linkA physically based impact modelalready known and exploited in the field of sound synthesis-is studied using both analytical tools and numerical simulations. It is shown that the Hamiltonian of a physical system composed of a mass impacting on a wall can be expressed analytically as a function of the mass velocity during contact. Moreover, an efficient and accurate approximation for the mass outbound velocity is presented, which allows to estimate the Hamiltonian at the end of the contact. Analytical results are then compared to numerical simulations obtained by discretizing the system with several numerical methods. It is shown that, for some regions of the parameter space, the trajectories of the discretized systems may significantly drift from the analytically derived curves. Two approaches, based on enforcing numerical energy consistency, are then proposed to improve the accuracy of numerical simulation
An open-source robotic tool for the simulation of quasi-static finger pressing on stationary and vibrating surfaces
Full text linkThe Bogus Finger is a remote-controllable tool for simulating vertical pressing forces of various magnitude as exerted by a human finger. Its main application is the characterization of haptic devices under realistic active touch conditions. The device is released as an open-source hardware and software DIY project that can be easily built using off-the-shelf components. We report the characterization of the quasi-static properties of the device, and validate its dynamic response to pressing on a vibrating surface by comparison with human fingers. The present prototype configuration accurately reproduces the mechanical impedance of the human finger in the frequency range 200-400 Hz
A shoe-based interface for ecological ground augmentation
No full textThe prototype of a wearable shoe-based interface is presented, which provides the user with auditory cues of ground. Data supplied by sensors embedded in the shoes drive a set of physics-based synthesis models running on a laptop, whose audio output is sent to a pair of shoe-mounted loudspeakers. By informing the synthesis models with ecological properties of grounds, neutral floors can be
interactively augmented so as to react like they were made of a different
material
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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