Sistema di controllo per l'automatizzazione di un cambio di derivazione motociclistica

La tesi tratta l'automatizzazione di un cambio di derivazione motociclistica montato in una vettura di Fomula SAE con un sistema elettro-pneumaticoope

Democracy, protest and public sphere in Russia after the 2011–2012 anti-government protests: digital media at stake

The 2011–2012 Russian protest mobilisations were largely enabled by the rise of social networks. Social and technological advancements paired to pave the way for the ‘biggest protests since the fall of USSR’. Ubiquitous and uncensored social media facilitated the networking and mobilisation for this protest activity: Liberal masses were able to share and discuss their grievances, unite and coordinate online for the offline protest. The digitally savvy protest public developed to confront the government, which appeared to be astonished by the scale of protest. Those mobilisations marked an important gap between the government’s conception of the society and the real state of resistance. This article studies three main hypotheses regarding the potential of the protest movement in Russia. The hypotheses were drawn from recent sociological, political and media studies on Russian resistance. Current research aims to contribute to the debate from the digital media perspective. It therefore evaluates three main assumptions: Digital media have the potential to empower, dependent upon the relevant political, social and economic factors; digital media isolates protest publics and therefore may be more useful for the government than the resistance; and recent censorship of digital media communication signals a tightening of both formal and informal restrictions against opposition and protest politics. This article uses theoretical and factual evidence on the limitations of democracy and the public sphere and conceptualises the government’s management of resistance in Russia during and after the 2011–2012 protests. It studies how the hybrid political regime in Russia balances restrictions on freedom of speech with strengthened state propaganda and how it mediates media oppression and invites self-censorship. Finally, it examines how the state communication watchdog has recently focused its attention at the digital realm. This move confirms the importance of the online protest communication for the Russian political environment. Yet the state’s acknowledgement of digital political resistance may lead to further oppression and curbing of this emerging component of Russian politics

Complementary Degradation of Fuel Oil in Superficial Waters and in Axenic Cultures of Aerobic Gram-negative Bacteria Isolated from Venice Lagoon

The percentages of bacteria degrading fuel oil (n-paraffins from C*2 to C28) were determined in three stations in the northern part of Venice Lagoon. Concentrations of paraffin-degrading bacteria ranged from 8 to 70 bacteria per 100 mL in the least polluted station close to the sea, and from 33 to 345 bacteria per 100 mL in the most polluted station near Porto Marghera. Biological oxygen demand with fuel oil additions was higher in this station, where oxygen was totally depleted in 7 and 5 days in November and June respectively. Twenty-five bacterial strains were isolated from agar plates amended with fuel oil as the sole carbon and energy source; only two were Acinetobacter spp. strains. Strain VE-C3 grew in the presence of n-paraffins. Growth was inducible with a generation time of 2.77 h and an oxygen consumption rate of 53 pL h-1 mg-1 of cells (d.w.). Five other strains thrived on intermediate oxidation products of n-paraffin

A Comparative Cyberconflict Analysis of Digital Activism Across Post-Soviet Countries

This article analyses digital activism comparatively in relation to three Post-Soviet regions: Russian/anti-Russian in Crimea and online political deliberation in Belarus, in juxtaposition to Estonia’s digital governance approach. The authors show that in civil societies in Russia, Ukraine and Belarus, cultural forms of digital activism, such as internet memes, thrive and produce and reproduce effective forms of political deliberation. In contrast to Estonia, in authoritarian regimes actual massive mobilization and protest is forbidden, or is severely punished with activists imprisoned, persecuted or murdered by the state. This is consistent with use of cultural forms of digital activism in countries where protest is illegal and political deliberation is restricted in government-controlled or oligarchic media. Humorous political commentary might be tolerated online to avoid mobilization and decompress dissent and resistance, yet remaining strictly within censorship and surveillance apparatuses. The authors’ research affirms the potential of internet memes in addressing apolitical crowds, infiltrating casual conversations and providing symbolic manifestation to resistant debates. Yet, the virtuality of the protest undermines its consistency and impact on offline political deliberation. Without knowing each other beyond social media, the participants are unlikely to form robust organisational structures and mobilise for activism offline

Oral exposure to methylmercury modifies the prostatic microenvironment in adult rats

Methylmercury (MeHg) is an environmental pollutant that is highly toxic to the central nervous system. As its effects on male reproductive system are poorly understood, this study was carried out to analyse the effects of MeHg on the rat prostate. To evaluate the MeHg toxicity on ventral prostate, three groups of adult male Wistar rats received oral doses of 0.5, 1.0 and 3.0mg/kg MeHg, respectively, on a daily basis for 14days. A fourth group was used as a control. The prostate weight was decreased in rats treated orally with 0.5mg/kg MeHg compared to controls. Also, Hg concentration increased significantly in the prostate after treatments. There were reductions in serum testosterone levels and androgen receptor immunoreactivity in animals receiving 3.0mgMeHg/kg. The stereological data showed changes in the prostatic epithelial, stromal and luminal compartments which varied according to the different doses. Histopathological alterations, such as chronic inflammation, stratified epithelial hyperplasia and epithelial inflammatory reactive atypia, were observed in the 0.5mg/kg MeHg-treated group. Epithelial atrophy was observed in the 3.0mg/kg MeHg-treated group. In conclusion, the MeHg affects prostatic homoeostasis resulting in histopathological changes that may be relevant in the pathogenesis of prostatic disease.Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2007/56458-4

Obesidade Infantil: causas, consequências e estratégias de prevenção para um desenvolvimento saudável

A obesidade infantil, caracterizada pelo excesso de gordura corporal, resulta de vários fatores, como sedentarismo, dieta inadequada e influências genéticas e psicossociais. Considerada uma epidemia global, a condição afeta milhões de crianças e adolescentes, elevando o risco de doenças crônicas, como diabetes tipo 2 e doenças cardiovasculares, além de acarretar consequências psicossociais e metabólicas que se estendem para a vida adulta. A prevenção deve-se ao papel das famílias na promoção de hábitos saudáveis, como refeições em conjunto, incentivo à atividade física e redução do tempo de telas. No âmbito da saúde pública, consultas pediátricas e intervenções precoces são cruciais para identificar e mitigar fatores de risco. Políticas públicas, como regulação de alimentos ultraprocessados e estímulo a práticas esportivas, são essenciais para criar ambientes que favoreçam o desenvolvimento saudável. Portanto, a abordagem preventiva é fundamental para reduzir os efeitos a longo prazo e os custos sociais e econômicos dessa epidemia

Loss estimation in a voltage source inverter for electrical drives

This thesis deals with the design and realization of an inverter with a nominal power of 9KW for electrical drives. In particular, the losses have been estimated with two different models in order to predict the efficiency and the temperature and, consequently, to be able to estimate which heat sink to use

The Russian Media: From Popularity to Distrust

President Putin has repeatedly said that a free press is the ‘most important guarantor of the irreversibility of our country's democratic course.’ Yet during the last year the Kremlin has appeared more interested in organizing a consistent flow of ‘correct’ information than in strengthening a free media.</jats:p