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  1. Article ; Online: Structural height, amplification and damages during the superficial earthquakes at Casamicciola, Ischia Island (2017), and Santa Venerina, Catania (2018), Italy

    Marco Gatti

    Geomatics, Natural Hazards & Risk, Vol 14, Iss

    2023  Volume 1

    Abstract: AbstractA rapid method to assess the potential seismic risk of a building due to its height or, equivalently, to the number of stories above ground is described. It was applied, despite already existing studies in this regard, to two earthquakes, those ... ...

    Abstract AbstractA rapid method to assess the potential seismic risk of a building due to its height or, equivalently, to the number of stories above ground is described. It was applied, despite already existing studies in this regard, to two earthquakes, those of Casamicciola, Ischia Island, on 21 August 2017 and Santa Venerina, Catania, on 26 December 2018; although characterized by a moderate magnitude (Mw 4.0 and Mw 4.8) and short duration, they produced victims and considerable damage. Accelerometric recordings of seismic stations in the areas of the two earthquakes were acquired and the pseudoacceleration spectra and dynamic amplification factors of the ground were obtained from them. By inversion of the algebraic relation between a building’s elastic period of vibration T0 and its height H, the so-called ‘critical’ heights (and corresponding number of stories above ground) to which corresponded the ‘greatest’ dynamic amplifications were identified: buildings with a number of stories above ground equal to the ‘critical’ values were considered potentially more exposed to seismic risk. For verification of the method, ca. 200 buildings in the areas of the earthquakes were surveyed and the resulting damages were related to the number of stories above ground. The results showed that, even though the two earthquakes were of moderate magnitude and short duration, the amplifications of the ground (at Casamicciola equal to 3 for reinforced concrete buildings and 2.4 for masonry buildings; at Santa Venerina 2 and 1.7 respectively) produced appreciable accelerations in buildings with two stories above ground, which turned out to be the ones with the greatest damage. The principle underlying the method consists of rapid numerical calculations performed on the pseudoacceleration spectra of the ground. Therefore, in areas with historical seismicity where accelerometric recordings are available, it is possible to identify buildings with potential exposure to seismic risk based on the number of ‘critical’ stories above ground and ...
    Keywords Seismic risk ; vulnerability ; height ; dynamic amplification factor ; earthquake ; Environmental technology. Sanitary engineering ; TD1-1066 ; Environmental sciences ; GE1-350 ; Risk in industry. Risk management ; HD61
    Subject code 720
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher Taylor & Francis Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Predicting Hand Movements With Distributional Semantics: Evidence From Mouse-Tracking.

    Gatti, Daniele / Marelli, Marco / Rinaldi, Luca

    Cognitive science

    2024  Volume 48, Issue 1, Page(s) e13372

    Abstract: Although mouse-tracking has been taken as a real-time window on different aspects of human decision-making processes, whether purely semantic information affects response conflict at the level of motor output as measured through mouse movements is still ... ...

    Abstract Although mouse-tracking has been taken as a real-time window on different aspects of human decision-making processes, whether purely semantic information affects response conflict at the level of motor output as measured through mouse movements is still unknown. Here, across two experiments, we investigated the effects of semantic knowledge by predicting participants' performance in a standard keyboard task and in a mouse-tracking task through distributional semantics, a usage-based modeling approach to meaning. In Experiment 1, participants were shown word pairs and were required to perform a two-alternative forced choice task selecting either the more abstract or the more concrete word, using standard keyboard presses. In Experiment 2, participants performed the same task, yet this time response selection was achieved by moving the computer mouse. Results showed that the involvement of semantic components in the task at hand is observable using both standard reaction times (Experiment 1) as well as using indexes extracted from mouse trajectories (Experiment 2). In particular, mouse trajectories reflected the response conflict and its temporal evolution, with a larger deviation for increasing word semantic relatedness. These findings support the validity of mouse-tracking as a method to detect deep and implicit decision-making features. Additionally, by demonstrating that a usage-based model of meaning can account for the different degrees of cognitive conflict associated with task achievement, these findings testify the impact of the human semantic memory on decision-making processes.
    MeSH term(s) Humans ; Semantics ; Knowledge ; Memory ; Movement ; Reaction Time
    Language English
    Publishing date 2024-01-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2002940-8
    ISSN 1551-6709 ; 0364-0213
    ISSN (online) 1551-6709
    ISSN 0364-0213
    DOI 10.1111/cogs.13399
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Relation between dynamic amplification, structural height and damage in buildings affected by the recent Italian earthquakes

    Marco Gatti

    Geomatics, Natural Hazards & Risk, Vol 11, Iss 1, Pp 1154-

    2020  Volume 1174

    Abstract: To exploit the purely geometric link between the elastic period of vibration T and the height H (or number of stories) of a building, T was varied from 0 to 0.5 s coinciding with a height between 0 and 12 m (at most the four stories typical of Italian ... ...

    Abstract To exploit the purely geometric link between the elastic period of vibration T and the height H (or number of stories) of a building, T was varied from 0 to 0.5 s coinciding with a height between 0 and 12 m (at most the four stories typical of Italian buildings) in order to estimate the spectral accelerations corresponding to acceleration measurements recorded during the earthquakes of L’Aquila, Emilia and central Italy. These estimates were used to calculate the maximum dynamic amplification factors and corresponding heights, called critical heights, that can generate either resonance or appreciable dynamic amplification values. The results showed dynamic amplification values close to 3 for reinforced concrete buildings and 2.5 for masonry buildings independently of the characteristics of the earthquakes. There was a significant coincidence between the structural height of the buildings with greatest recorded damage and the critical height. The basis of the study lies in simple numerical steps carried out with easily obtainable data: for this reason, it can be easily applied to determine the vulnerability of a building according to its structural height.
    Keywords dynamic amplification factor ; daf ; height ; damage ; earthquake ; seismic risk ; Environmental technology. Sanitary engineering ; TD1-1066 ; Environmental sciences ; GE1-350 ; Risk in industry. Risk management ; HD61
    Subject code 690
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Taylor & Francis Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Fast rate dual-comb spectrometer in the water-transparent 7.5-11.5 µm region.

    Moretti, Luca / Walsh, Mathieu / Abualsaud, Nawaf / Gatti, Davide / Lamperti, Marco / Genest, Jérome / Farooq, Aamir / Marangoni, Marco

    Optics letters

    2024  Volume 49, Issue 7, Page(s) 1844–1847

    Abstract: We introduce a dual-comb spectrometer based on erbium fiber oscillators at 250 MHz that operates in the 7.5-11.5 µm spectral range over optical bandwidths up to 9 THz with a multi-kHz acquisition rate. Over an observation bandwidth of 0.8 THz, the signal- ...

    Abstract We introduce a dual-comb spectrometer based on erbium fiber oscillators at 250 MHz that operates in the 7.5-11.5 µm spectral range over optical bandwidths up to 9 THz with a multi-kHz acquisition rate. Over an observation bandwidth of 0.8 THz, the signal-to-noise ratio per spectral point reaches 168 Hz
    Language English
    Publishing date 2024-04-01
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4794
    ISSN (online) 1539-4794
    DOI 10.1364/OL.515199
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Cerebellar involvement in distributional semantic learning: Insights from a combined TMS-computational approach.

    Gatti, Daniele / Rinaldi, Luca / Marelli, Marco / Vecchi, Tomaso

    Brain stimulation

    2022  Volume 15, Issue 4, Page(s) 999–1001

    MeSH term(s) Cerebellum ; Learning ; Semantics ; Transcranial Magnetic Stimulation
    Language English
    Publishing date 2022-07-16
    Publishing country United States
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 2394410-9
    ISSN 1876-4754 ; 1935-861X
    ISSN (online) 1876-4754
    ISSN 1935-861X
    DOI 10.1016/j.brs.2022.07.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Peak horizontal vibrations from GPS response spectra in the epicentral areas of the 2016 earthquake in central Italy

    Marco Gatti

    Geomatics, Natural Hazards & Risk, Vol 9, Iss 1, Pp 403-

    2018  Volume 415

    Abstract: GPS measurements recorded at active sites in central Italy during the seismic events of greatest magnitude (24 August, 26 and 30 October 2016) were processed in kinematic mode according to the Precise Point Positioning (PPP) technique. The resulting data ...

    Abstract GPS measurements recorded at active sites in central Italy during the seismic events of greatest magnitude (24 August, 26 and 30 October 2016) were processed in kinematic mode according to the Precise Point Positioning (PPP) technique. The resulting data were the displacements and, by derivation with respect to time, the velocities and instantaneous horizontal accelerations. Elastic response spectra along the orthogonal walls of the site (if the GPS antenna was fixed to a building) or along the geographical directions (if the antenna was fixed to the ground) were obtained from the derived accelerations. The maximum amplitudes, i.e. “peak vibrations”, were then extracted from the response spectra. These peaks, unlike the co-seismic movements, represent the maximum instantaneous vibrations recorded following the “shock” produced by the seismic waves and thus are representative of both the discomfort perceived by the populations and the structural damage. This study shows that GPS is becoming an increasingly important tool to measure and monitor the dynamic responses of a structure. The results also provide a complete picture of the displacements induced by the seismic sequences in the earthquake-affected areas, leaving unresolved some questions concerning the localization of the phenomena and the causes of the structural deformations.
    Keywords GPS ; peak ; vibrations ; earthquake 2016 ; Italy ; Environmental technology. Sanitary engineering ; TD1-1066 ; Environmental sciences ; GE1-350 ; Risk in industry. Risk management ; HD61
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher Taylor & Francis Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Editorial: Radiomics and radiogenomics in genitourinary oncology: artificial intelligence and deep learning applications.

    Stefano, Alessandro / Bertelli, Elena / Comelli, Albert / Gatti, Marco / Stanzione, Arnaldo

    Frontiers in radiology

    2023  Volume 3, Page(s) 1325594

    Language English
    Publishing date 2023-12-18
    Publishing country Switzerland
    Document type Editorial
    ISSN 2673-8740
    ISSN (online) 2673-8740
    DOI 10.3389/fradi.2023.1325594
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Spatial Representations Without Spatial Computations.

    Gatti, Daniele / Marelli, Marco / Vecchi, Tomaso / Rinaldi, Luca

    Psychological science

    2022  Volume 33, Issue 11, Page(s) 1947–1958

    Abstract: Cognitive maps are assumed to be fundamentally spatial and grounded only in perceptual processes, as supported by the discovery of functionally dedicated cell types in the human brain, which tile the environment in a maplike fashion. Challenging this ... ...

    Abstract Cognitive maps are assumed to be fundamentally spatial and grounded only in perceptual processes, as supported by the discovery of functionally dedicated cell types in the human brain, which tile the environment in a maplike fashion. Challenging this view, we demonstrate that spatial representations-such as large-scale geographical maps-can be as well retrieved with high confidence from natural language through cognitively plausible artificial-intelligence models on the basis of nonspatial associative-learning mechanisms. More critically, we show that linguistic information accounts for the specific distortions observed in tasks when college-age adults have to judge the geographical positions of cities, even when these positions are estimated on real maps. These findings indicate that language experience can encode and reproduce cognitive maps without the need for a dedicated spatial-representation system, thus suggesting that the formation of these maps is the result of a strict interplay between spatial- and nonspatial-learning principles.
    MeSH term(s) Adult ; Humans ; Language ; Linguistics ; Learning ; Brain
    Language English
    Publishing date 2022-10-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2022256-7
    ISSN 1467-9280 ; 0956-7976
    ISSN (online) 1467-9280
    ISSN 0956-7976
    DOI 10.1177/09567976221094863
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: High-resolution molecular fingerprinting in the 11.6-15 µm range by a quasi-CW difference-frequency-generation laser source.

    Elkhazraji, Ali / Shakfa, Mohammad Khaled / Lamperti, Marco / Hakimov, Khaiyom / Djebbi, Khalil / Gotti, Riccardo / Gatti, Davide / Marangoni, Marco / Farooq, Aamir

    Optics express

    2023  Volume 31, Issue 3, Page(s) 4164–4178

    Abstract: We report an approach for high-resolution spectroscopy using a widely tunable laser emitting in the molecular fingerprint region. The laser is based on difference-frequency generation (DFG) in a nonlinear orientation-patterned GaAs crystal. The signal ... ...

    Abstract We report an approach for high-resolution spectroscopy using a widely tunable laser emitting in the molecular fingerprint region. The laser is based on difference-frequency generation (DFG) in a nonlinear orientation-patterned GaAs crystal. The signal laser, a CO
    Language English
    Publishing date 2023-01-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.480107
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Out-of-vocabulary but not meaningless: Evidence for semantic-priming effects in pseudoword processing.

    Gatti, Daniele / Marelli, Marco / Rinaldi, Luca

    Journal of experimental psychology. General

    2022  Volume 152, Issue 3, Page(s) 851–863

    Abstract: Nonarbitrary phenomena in language, such as systematic association in the form-meaning interface, have been widely reported in the literature. Exploiting such systematic associations previous studies have demonstrated that pseudowords can be indicative ... ...

    Abstract Nonarbitrary phenomena in language, such as systematic association in the form-meaning interface, have been widely reported in the literature. Exploiting such systematic associations previous studies have demonstrated that pseudowords can be indicative of meaning. However, whether semantic activation from words and pseudowords is supported by the very same processes, activating a common semantic memory system, is currently not known. Here, we take advantage of recent progresses from computational linguistics models allowing to induce meaning representations for out-of-vocabulary strings of letters via domain-general associative-learning mechanisms applied to natural language. We combined these models with data from priming tasks, in which participants are showed two strings of letters presented sequentially one after the other and are then asked to indicate if the latter is a word or a pseudoword. In Experiment 1 we reanalyzed the data of the largest behavioral database on semantic priming, while in Experiment 2 we ran an independent replication on a new language, Italian, controlling for a series of possible confounds. Results were consistent across the two experiments and showed that the prime-word meaning interferes with the semantic pattern elicited by the target pseudoword (i.e., at increasing estimated semantic relatedness between prime word and target pseudoword, participants' reaction times increased and accuracy decreased). These findings indicate that the same associative mechanisms governing word meaning also subserve the processing of pseudowords, suggesting in turn that human semantic memory can be conceived as a distributional system that builds upon a general-purpose capacity of extracting knowledge from complex statistical patterns. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
    MeSH term(s) Humans ; Semantics ; Vocabulary ; Language ; Linguistics ; Memory ; Reaction Time/physiology
    Language English
    Publishing date 2022-09-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 189732-9
    ISSN 1939-2222 ; 0096-3445
    ISSN (online) 1939-2222
    ISSN 0096-3445
    DOI 10.1037/xge0001304
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