Comportamiento de "Osilinus atratus" (Wood, 1828) ante diferentes sustratos rocosos

[ES] Se estudia el comportamiento del burgado (Osilinus atratus) ante diferentes tipos de sustratos rocosos, tanto en color como en tamaño. Los individuos muestran cierta tendencia a permanecer sobre sustratos de color gris-verdoso, sobre piedras de basalto-fonolitas, muy similares a los colores que abundan en las conchas de esta especie. Igualmente, evitan permanecer sobre sedimentos de pequeña granulometría, incrementándose el tiempo de permanencia cuanto mayor es el grano del sedimento.

Paul Flandrin (1811-1902), un nuovo sguardo sul paesaggio dell'Ottocento

Questa ricerca ha l’obiettivo di dare nuovi contributi alla conoscenza della pittura di paesaggio francese nell’Ottocento attraverso lo studio dell’opera di Paul Flandrin (1811-1902). Flandrin si colloca al crocevia di esperienze fondamentali nella ricerca artistica di metà Ottocento: l’eredità di Camille Corot, l’insegnamento di Jean-Auguste Dominique Ingres, la pratica del lavoro en plein air, la tradizione del paesaggio neoclassico. Il corpus di opere del pittore lionese Paul Flandrin (1811-1902) ricostruito in questa tesi è frutto di una sistematica operazione di ricerca sul campo e viene in seguito analizzato alla luce dei recenti studi sulla pittura di paesaggio neoclassico in Francia nel XIX secolo. La ricerca si fonda su una grande quantità di materiale inedito: dipinti, disegni, taccuini di studio en plein air, corrispondenza con colleghi e amici. Da questa ricerca la fisionomia artistica di Paul Flandrin emerge ben individuata singolarmente e al tempo stesso ancorata al contesto storico-artistico attraverso le relazioni con i colleghi, l’utilizzo di determinate tecniche, la frequentazione di mete comuni ai paesaggisti suoi contemporanei, la decisa presa di posizione a favore del paesaggio neoclassico.

Il Lessico d’amore nei primi tre libri delle Odi di Orazio

Il presente studio si è posto come obiettivo quello di redigere un lessico dei termini d’amore nella poesia di Orazio, e, specificamente, dei lemmi presenti nei primi tre libri delle Odi. L’interesse per la lirica del Venosino ci ha indotti ad affrontarne la lettura non solo considerando quelle che sono le tematiche diremo topiche della sua poetica ( modus, angulus, mors, tempus, cura, solo per citare quelle più significative ), ma anche quelle meno note, quale appunto il tema dell’amore, oggetto di questo lavoro. Si è proceduto così all’analisi di ogni singolo libro di ogni ode, catalogandone ed analizzandone rispettivamente tutte le occorrenze di quei termini che abbiamo ritenuto essere propri del lessico amoroso. Il commento ad ogni libro è stato supportato dagli studi di Nisbet-Hubbard per il primo ed il secondo libro delle Odi ( cfr. R.G.M. Nisbet-M. Hubbard, A commentary on Horace: Odes Book 1, Oxford 1970; R.G.M. Nisbet-M. Hubbard, A commentary on Horace: Odes Book 2, Oxford 1978 ) e Nisbet-Rudd per il terzo ( cfr. R.G.M. Nisbet-Rudd, A commentary on Horace: Odes Book 3, Oxford, 2003 ). Trattandosi di un lessico è stato altresì fondamentale il contributo dell’ Index uerborum amatorium ( Cfr. R. Pichon, De sermone amatorio apud Latinos elegiarum scriptores, Paris 1902 ) e del ThLL. Si è infine proceduto ad individuare quei termini maggiormente significativi nell’ambito della poesia d’amore in generale, il cui riflesso è presente anche nella poesia oraziana, con una particolare attenzione al rapporto che intercorre tra Orazio e la tradizione neoterica ed elegiaca e al lessico dei colori, che vanta numerose occorrenze nella poesia d’amore, soprattutto in riferimento alla bellezza muliebre e maschile e che quindi appare di rilevante importanza per comprendere l’estetica della poesia oraziana nel ritrarre la forma degli amanti che popolano i suoi più celebri versi d’amore.

Cooperative Cognitive Wireless Networks over TV White and Gray Spaces

Wireless networks rapidly became a fundamental pillar of everyday activities. Whether at work or elsewhere, people often benefits from always-on connections. This trend is likely to increase, and hence actual technologies struggle to cope with the increase in traffic demand. To this end, Cognitive Wireless Networks have been studied. These networks aim at a better utilization of the spectrum, by understanding the environment in which they operate, and adapt accordingly. In particular recently national regulators opened up consultations on the opportunistic use of the TV bands, which became partially free due to the digital TV switch over. In this work, we focus on the indoor use of of TVWS. Interesting use cases like smart metering and WiFI like connectivity arise, and are studied and compared against state of the art technology. New measurements for TVWS networks will be presented and evaluated, and fundamental characteristics of the signal derived. Then, building on that, a new model of spectrum sharing, which takes into account also the height from the terrain, is presented and evaluated in a real scenario. The principal limits and performance of TVWS operated networks will be studied for two main use cases, namely Machine to Machine communication and for wireless sensor networks, particularly for the smart grid scenario. The outcome is that TVWS are certainly interesting to be studied and deployed, in particular when used as an additional offload for other wireless technologies. Seeing TVWS as the only wireless technology on a device is harder to be seen: the uncertainity in channel availability is the major drawback of opportunistic networks, since depending on the primary network channel allocation might lead in having no channels available for communication. TVWS can be effectively exploited as offloading solutions, and most of the contributions presented in this work proceed in this direction.

Gray matter volume differences specific to formal thought disorder in schizophrenia

Formal thought disorder (FTD) is one of the main symptoms of schizophrenia. To date there are no whole brain volumetric studies investigating gray matter (GM) differences specifically associated with FTD. Here, we studied 20 right-handed schizophrenia patients that differed in the severity of formal thought disorder and 20 matched healthy controls, using voxel-based morphometry (VBM). The severity of FTD was measured with the Scale for the Assessment of Thought, Language, and Communication. The severity was negatively correlated with the GM volume of the left superior temporal sulcus, the left temporal pole, the right middle orbital gyrus and the right cuneus/lingual gyrus. Structural abnormalities specific for FTD were found to be unrelated to GM differences associated with schizophrenia in general. The specific GM abnormalities within the left temporal lobe may help to explain language disturbances included in FTD.

Chronic Pelvic Pain Syndrome in Men is Associated with Reduction of Relative Gray Matter Volume in the Anterior Cingulate Cortex Compared to Healthy Controls

Although chronic pelvic pain syndrome impairs the life of millions of people worldwide, the exact pathomechanisms involved remain to be elucidated. As with other chronic pain syndromes, the central nervous system may have an important role in chronic pelvic pain syndrome. Thus, we assessed brain alterations associated with abnormal pain processing in patients with chronic pelvic pain syndrome.

Reduced Cerebral Blood Flow Within the Default-Mode Network and Within Total Gray Matter in Major Depression

The default-mode network (DMN) was shown to have aberrant blood oxygenation-level-dependent (BOLD) activity in major depressive disorder (MDD). While BOLD is a relative measure of neural activity, cerebral blood flow (CBF) is an absolute measure. Resting-state CBF alterations have been reported in MDD. However, the association of baseline CBF and CBF fluctuations is unclear in MDD. Therefore, the aim was to investigate the CBF within the DMN in MDD, applying a strictly data-driven approach. In 22 MDD patients and 22 matched healthy controls, CBF was acquired using arterial spin labeling (ASL) at rest. A concatenated independent component analysis was performed to identify the DMN within the ASL data. The perfusion of the DMN and its nodes was quantified and compared between groups. The DMN was identified in both groups with high spatial similarity. Absolute CBF values within the DMN were reduced in MDD patients (p<0.001). However, after controlling for whole-brain gray matter CBF and age, the group difference vanished. In patients, depression severity was correlated with reduced perfusion in the DMN in the posterior cingulate cortex and the right inferior parietal lobe. Hypoperfusion within the DMN in MDD is not specific to the DMN. Still, depression severity was linked to DMN node perfusion, supporting a role of the DMN in depression pathobiology. The finding has implications for the interpretation of BOLD functional magnetic resonance imaging data in MDD.