scholarly journals Network Culture and Social Media at Global and Local Scale

2014 ◽  
Vol 1 (2) ◽  
pp. 19-36
Author(s):  
Şafak Erkayhan
Keyword(s):  
Social Media ◽  
Local Scale ◽  
Network Culture ◽  
Global And Local

scholarly journals How emissions from cruise ships in the port of Naples changed in the COVID-19 lock down period

2021 ◽  
pp. 147509022110284
Author(s):  
Luigia Mocerino ◽  
Franco Quaranta
Keyword(s):  
Local Scale ◽  
The Other ◽  
Cruise Ships ◽  
Global Pandemic ◽  
Transportation Sector ◽  
Reduction Of Emissions ◽  
The One ◽  
Global And Local

The scope of this work is to try to quantify the reduction of emissions due to COVID-19; an analysis covering the entire port of Naples will be presented. The explosion of the global pandemic from SARS-CoV-2 led to the adoption of local and global countermeasures aimed at containing contagions. The transportation sector, and in particular the passenger moving sector, was deeply affected; this almost total block of movements between regions and countries if, on the one hand, seriously slowed the economy, on the other, it drastically reduced the emissions on a global and local scale. In this work, the case study of the cruise ships berthed at the Maritime Station (Stazione Marittima) in the port of Naples is examined. The traffic of cruise ships during the lockdown and in the immediately following months was analysed and compared first with respect to the calendars scheduled for the same period and then with respect to the same months of 2019. The reduction in number of cruise ships and passengers were analysed and compared to the previous trends. The vessels collected, for 2019 and 2020 (both those that arrived and those that suffered the effects of the movement block) were subsequently characterized in terms of power and speed. Finally, an estimate of the emissions of NOX, SOX, CO2 produced and saved was carried out. The 2020 results will be compared with the hypothetical emissions that would have occurred in the absence of the lockdown and with those of the same period of the previous year.

scholarly journals Global‐ and Local‐Scale High‐Resolution Event Catalogs for Algorithm Testing

2019 ◽  
Author(s):  
Lisa Linville ◽  
Ronald Chip Brogan ◽  
Christopher Young ◽  
Katherine Anderson Aur
Keyword(s):  
Global Scale ◽  
Local Scale ◽  
Algorithm Performance ◽  
Directional Information ◽  
Event Sequences ◽  
University Of Utah ◽  
International Monitoring ◽  
Using Data ◽  
The University ◽  
Global And Local

ABSTRACT During the development of new seismic data processing methods, the verification of potential events and associated signals can present a nontrivial obstacle to the assessment of algorithm performance, especially as detection thresholds are lowered, resulting in the inclusion of significantly more anthropogenic signals. Here, we present two 14 day seismic event catalogs, a local‐scale catalog developed using data from the University of Utah Seismograph Stations network, and a global‐scale catalog developed using data from the International Monitoring System. Each catalog was built manually to comprehensively identify events from all sources that were locatable using phase arrival timing and directional information from seismic network stations, resulting in significant increases compared to existing catalogs. The new catalogs additionally contain challenging event sequences (prolific aftershocks and small events at the detection and location threshold) and novel event types and sources (e.g., infrasound only events and long‐wall mining events) that make them useful for algorithm testing and development, as well as valuable for the unique tectonic and anthropogenic event sequences they contain.

Transforming Democracy through ICT

2008 ◽  
pp. 2441-2449
Author(s):  
Andy Williamson
Keyword(s):  
Civil Society ◽  
New Technologies ◽  
The Philippines ◽  
Local Scale ◽  
Citizen Engagement ◽  
Global And Local ◽  
Do So

This article explores the potential of ICT to be used to transform the processes of citizen engagement such that a citizen-centred approach to e-democracy becomes both viable and desirable. It will do so by exploring three tensions relating to democracy and civil society: first that participation in traditional democracy is falling, yet new technologies are mobilising citizens on a global and local scale (such as antiglobalisation protests and electoral protests in the Philippines and Spain); second, ICT increases the technocracy of government but also offers citizens a chance to become closer to it; and third, that macro strategies for ICT access are not enough to remove localised exclusion.

scholarly journals FUSION OF HYPERSPECTRAL AND PANCHROMATIC DATA BY SPECTRAL UNMIXING IN THE REFLECTIVE DOMAIN

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 567-574
Author(s):  
Y. Constans ◽  
S. Fabre ◽  
M. Seymour ◽  
V. Crombez ◽  
X. Briottet ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Quality Criteria ◽  
Local Scale ◽  
Spectral Unmixing ◽  
High Spectral Resolution ◽  
Urban Landscapes ◽  
Urban Scenes ◽  
Mixed Pixels ◽  
Global And Local

Abstract. Earth observation at the local scale implies working on images with both high spatial and spectral resolutions. As the latter cannot be simultaneously provided by current sensors, hyperspectral pansharpening methods combine images jointly acquired by two different sensors, a panchromatic one providing high spatial resolution, and a hyperspectral one providing high spectral resolution, to generate an image with both high spatial and spectral resolutions. The main limitation in the fusion process is in presence of mixed pixels, which particularly affect urban scenes, and where large fusion errors may occur. Recently, the Spatially Organized Spectral Unmixing (SOSU) method was developed to overcome this limitation, delivering good results on agricultural and peri-urban landscapes, which contain a limited number of mixed pixels. This article presents a new version of SOSU, adapted to urban landscapes. It is validated on a Toulouse (France) urban dataset at a 1.6 m spatial resolution acquired by the HySpex instrument from the 2012 UMBRA campaign. A performance assessment is established, following Wald’s protocol and using complementary quality criteria. Visual and numerical (at the global and local scales) analyses of this performance are also proposed. Notably, in the VNIR domain, around 51 % of the mixed pixels are better processed by the presented version of SOSU than by the method used as a reference. This ratio is improved regarding shadowed areas in the reflective (52 %) and VNIR (57 %) domains.

scholarly journals National illegal wildlife trafficking of threatened species: a descriptive study in Manabí (Ecuador)

La Granja ◽  
2021 ◽  
Vol 35 (1) ◽  
Author(s):  
Sofía Crespo ◽  
Carlos Solórzano ◽  
Josè Guerrero-Casado
Keyword(s):  
Biodiversity Conservation ◽  
Threatened Species ◽  
Descriptive Study ◽  
Local Scale ◽  
Biodiversity Hotspot ◽  
Negative Effects ◽  
Clear Preference ◽  
Wildlife Trafficking ◽  
Global And Local ◽  
International Threat

Illegal wildlife trafficking has negative effects on biodiversity conservation at both global and local scale. Therefore, the establishment of appropriate conservation measures requires local studies that quantify this problem. The objective of this work was to quantify and characterize the species of birds and mammals seized in the period 2016-2017, at the Valle Alto Wildlife Rescue Centre and Wildlife Refuge. The study showed that 212 specimens belonging to 41 different species were confiscated. More birds than mammals were confiscated, and a greater proportion of birds were included in a national and international threat category. A clear preference for primates, parrots and squirrels was found. Furthermore, the presence of species with a distribution range outside the study area revealed the existence of the transportation of species from other parts of the country. Although these data are only a sample of what is actually trafficked in the country, they provide an approach of the type of species that are illegally trafficked in this biodiversity hotspot.

scholarly journals Editorial and Critical Reflections on the future of identity moments and social media in China and beyond

2020 ◽  
Vol 5 (3) ◽  
pp. 215-227 ◽  
Author(s):  
Tania Lim ◽  
Terence Lee ◽  
Weiyu Zhang
Keyword(s):  
Social Media ◽  
Identity Politics ◽  
Pop Culture ◽  
Internet Research ◽  
Global Media ◽  
Research Conference ◽  
Internet Users ◽  
Personal Politics ◽  
The Future ◽  
Global And Local

This Special Issue of Global Media and China responds in part to Stuart Hall’s famous 1996 invocation, ‘Who needs identity?’ – to study ‘specific enunciative strategies’ utilized within ‘specific modalities of power’ so as to consider identity discourses of the present and of the future. This issue draws upon empirical observations presented and debated at the 2019 Chinese Internet Research Conference held in Singapore in May 2019, as well as theoretical contributions in identity politics and social media, the chosen site or ‘modality of power’. This editorial and critical essay reflects upon, complemented and supported by the papers in this issue, the critical and conceptual frameworks that are emerging to critique the global and local complexities, diversity and dynamics resulting from the deeper integration of social media into the everyday lives of Chinese Internet users. It presents an overview of the 2019 Chinese Internet Research Conference proceedings in terms of how social media is used to wrap personal politics into a widening range of identity groupings around gender, class, citizens, pop culture and religion in ways that signal the future of newer forms of identity politics among Internet users in China. Since social media posts and exchanges, while geographically sourced and situated, often transcend their boundaries, the arguments presented here goes beyond China and are global. The shareability of identity mediated by individual, state and public discourses on social and ‘anti-social’ media during the COVID-19 pandemic within China, Singapore and Australia leads to novel ways of understanding identity politics in globalizing China and strategic uses of Chinese identity.

scholarly journals Thermomechanical Fatigue of Lost Foam Cast Al–Si Cylinder Heads—Assessment of Crack Origin Based on the Evaluation of Pore Distribution

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 821 ◽  
Author(s):  
Martin Wagner ◽  
Andreas Mösenbacher ◽  
Marion Eiber ◽  
Martin Hoyer ◽  
Marco Riva ◽  
...  
Keyword(s):  
Crack Initiation ◽  
Predictive Accuracy ◽  
Thermomechanical Fatigue ◽  
Local Scale ◽  
X Ray ◽  
Pore Networks ◽  
Crack Origin ◽  
Global And Local ◽  
Lost Foam ◽  
Scanning Electron

In automotive cylinder heads, thermomechanical fatigue (TMF) leads to crack initiation within the critical loaded sections. This effect becomes even more relevant in lost foam cast cylinder heads since its system-dependent porosity shows a significant influence on the lifetime under TMF loading. This work covers the identification of a criterion for crack initiation in order to provide the basis for an effective quality control with improved statistical safety by nondestructive testing. Specimens extracted from lost foam cylinder heads were investigated by uniaxial TMF tests, X-ray micro computer tomography (μCT), and scanning electron microscopy (SEM). Due to pore analyses on a global and local scale, it is concluded that pore networks are crucial for crack initiation. Thus, a tool for computation of pore accumulations from μCT data containing interaction criteria by Murakami was developed in order to assess the crack origin. The consideration of pore accumulations significantly improves the predictive accuracy compared to the consideration of single pores.

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