4,311 research outputs found
Disegnare il tempo e l’Armonia. Il disegno di architettura osservatorio nell’universo
No full textIl 2009 è stato dichiarato anno mondiale dell’Astronomia. Il convegno “Disegnare il tempo e l’armonia” si è inserito nel programma annuale per condividere le suggestioni e gli stimoli che nascevano dal contenuto di questo tema. L’astronomia, come si desume dalla etimologia della parola stessa (leggi delle stelle), è la scienza che studia gli astri e i fenomeni celesti, sarebbe però selettivo, se non riduttivo, nella celebrazione mondiale, se il campo di riflessione fosse stato riservato solamente agli specialisti esperti della materia. Molti aspetti della cultura, della scienza e della filosofia sono relazionati e influenzati in maniera evidente dai concetti astronomici nella loro dimensione universale. E’ naturale perciò un interesse diffuso, ed è stato dimostrato da tutti gli eventi che si sono succeduti nell’anno galileiano, per questo tema coinvolgente, che va oltre il significato delle scoperte, e che viene guardato e studiato da più “osservatori”. “Osservatori” che vogliono capire, ciascuno con i mezzi culturali a propria disposizione, quale posto occupano nell’universo
L'uso dei social media per il marketing e la comunicazione aziendale
No full textNo abstract availabl
Le entrate signorili dei Mandelli a Maccagno: fine XIII-inizi XIV secolo
No full textIl saggio esamina la signoria esercitata dalla famiglia milanese dei Mandelli sul villaggio di Maccagno Inferiore, sul Lago Maggiore, a cavallo fra XIII e XIV secolo. Ne emerge il limitato rientro economico di questo territorio periferico, compensato però dal valore simbolico del potere ivi esercitato.The essay examines the lordship exercised by the Milanese Mandelli family over the village of Maccagno Inferiore, on the Lake Maggiore, between 13th and 14th centuries. This peripheral territory provided little wealth to the family, but this was compensated by the symbolic value of the power exercised
The relationship between social media conversations and reputations during a crisis: the Toyota case
No full textThe current study investigates the complex relationship between communications on the Internet and reputation changes during a crisis, through the analysis of the Toyota recall case. We use secondary order data regarding communications and people's perceptions and attitudes. We were particularly interested in studying the impact of online communication and social media conversations, studying the role of consumers, media, and the firm itself in these conversations. The link between negative media coverage and reputation, and the link between negative consumer's messages and reputation, do not seem to be so direct and simple as many academics and practitioners claim. We seek to demonstrate that there is an internal validity bias in assuming that online conversations can be used as a proxy of online reputation, and our findings show how misleading this association can be. It is necessary to consider the role of the relationship's history, and also how the company invests in conversations and relationship management through traditional and social media during the crisis. This case analysis aims at clarifying the conceptual and methodological framework for studying the impact of social media on reputation building and protection. Managerial implications are discussed
High occupational level is associated with poor response to the treatment of depression: A replication study
No full textMajor depressive disorder (MDD) is a leading cause of disability and inability to work. There is evidence that occupational factors may precipitate a MDD episode and interfere with the recovery process. In a previous investigation, we found that those employed in high occupational levels had a worse outcome after treatment for depression (Mandelli et al., 2016). The aim of the present study was to further investigate response to treatments for depression according to occupational status on an independent sample of MDD patients. Six hundred and forty-seven (647) subjects with a stable working occupation were taken from a larger independent sample of MDD patients evaluated for response and resistance to treatment for depression, after at least one adequate treatment trial. Three broad occupational categories were considered: ‘manager’ ‘white-collar’ ‘blue-collar’ and ‘self-employed’. Managers had the highest rate of non-response and resistance to treatments. White-collar workers also had high non-response and resistance rates. At the opposite, Blue-collar workers had significantly lower rates of non-response and resistance. Self-employed were in between White- and Blue-collar workers and did not significantly differ from the other occupational categories. The findings of this replication study substantially support our previous observations. MDD patients employed in high-middle occupations may have a less favorable outcome after standard treatments of depression. Working stressful condition and other psychosocial factors at work should be investigated more closely in relation to treatment outcomes in MDD
Digital and Cultural Study of Terracotta Figurines in the Museo Egizio, Turin. The Project SUR.VI.V.E.(SURveying Virtual Voids in Egyptian collections) in E. Galbois and Louis Autin (eds.), Étudier les terres cuites antiques aujourd’hui (assai 1)/Nommer le peuple romain en latin et en grec (assai 2)
No full textTerracotta figurines, being a mass-produced item made from a low-cost material, can provide information about popular worship and socio-cultural-religious contexts and practices. The project SUR.VI.V.E. (SURveying VIrtual Voids in Egyptian collections). A Digital and Cultural Study on Terracotta Figurines and their Lost Molds funded by the Politecnico di Milano stems from the idea of combining the analytical approaches used so far in the study of the terracotta figurines with the innovative digital methodologies, here applied for the first time in a systematic way to the corpus of ancient Egyptian terracotta figurines kept in the collection of the Museo Egizio in Turin. This study aims to serve as a model for scientific and theoretical developments in future coroplastic studies and to trigger a renewed academic attention in this field
Integrative taxonomy of the Russet Bush Warbler Locustella mandelli complex reveals a new species from central China
No full textBackground
The Russet Bush Warbler Locustella (previously Bradypterus) mandelli complex occurs in mountains in the eastern Himalayas, southern China, Vietnam, the Philippines, and Indonesia. The taxonomy has been debated, with one (L. seebohmi) to four (L. seebohmi, L. mandelli, L. montis and L. timorensis) species having been recognised.
Methods
We used an integrative approach, incorporating analyses of morphology, vocalizations and a molecular marker, to re-evaluate species limits in the L. mandelli complex.
Results
We found that central Chinese L. mandelli differed from those from India through northern Southeast Asia to southeast China in plumage, morphometrics and song. All were easily classified by song, and (wing + culmen)/tail ratio overlapped only marginally. Both groups were reciprocally monophyletic in a mitochondrial cytochrome b (cytb) gene tree, with a mean divergence of 1.0 ± 0.2%. They were sympatric and mostly altitudinally segregated in the breeding season in southern Sichuan province. We found that the Mt Victoria (western Myanmar) population differed vocally from other L. mandelli, but no specimens are available. Taiwan Bush Warbler L. alishanensis was sister to the L. mandelli complex, with the most divergent song. Plumage, vocal and cytb evidence supported the distinctness of the south Vietnamese L. mandelli idonea. The Timor Bush Warbler L. timorensis, Javan Bush Warbler L. montis and Benguet Bush Warbler L. seebohmi differed distinctly in plumage, but among-population song variation in L. montis exceeded the differences between some populations of these taxa, and mean pairwise cytb divergences were only 0.5-0.9%. We also found that some L. montis populations differed morphologically.
Conclusions
We conclude that the central Chinese population of Russet Bush Warbler represents a new species, which we describe herein, breeding at mid elevations in Sichuan, Shaanxi, Hubei, Hunan and Guizhou provinces. The taxonomic status of the other allopatric populations is less clear. However, as they differ to a degree comparable with that of the sympatric L. mandelli and the new species, we elevate L. idonea to species status, and retain L. seebohmi and L. montis as separate species, the latter with timorensis as a subspecies. Further research should focus on different populations of L. montis and the Mt Victoria population of L. mandelli
Strategies for Network Slicing Negotiation in a Dynamic Resource Market
No full textOne of the disruptive innovations introduced by 5G networks is the opportunity for a new group of stakeholders to be actively involved in the management of network slices with the role of tenants. This allows to go beyond the user-centric QoS paradigm of 4G, and to include tools for handling the aggregate performance of multiple services and user groups and to focus on slice resource management, also at the new 5G NR interface. So far, research efforts have privileged a first solution based on the concept of isolation between slices. However, proposed solutions are not particularly efficient due to the loss of pooling gains, and not very reliable due to variable channel conditions that with slice limited resources make performance not easily predictable. We propose a slice management framework where the shared resources are negotiated by tenants in a real-time market based on slice instantaneous demands. Our model, based on game theory, allows tenants to optimize their service strategies acquiring resources when and where it is necessary, according to the level of quality and reliability requested by the specific traffic types they handle. In this paper, we focus on modeling the game theoretical framework and on characterizing its equilibria in a multi-tenant scenario
Fenologia e necessidades térmicas da videira na serra gaúcha.
No full textA videira cultivada em regiões de clima temperado apresenta ciclos vegetativos sucessivos, intercalados por períodos de repouso. A duração do ciclo da videira é definida pelo número de dias que vai do início da brotação à queda das folhas, enquanto o ciclo relativo das cultivares é determinado pela comparação com cultivares tomadas como padrão e cuja fenologia média já tenha sido estabelecida para determinado local. Na viticultura brasileira realizaram-se estudos fenológicos em diversas regiões produtoras, como os de Pedro Júnior et al. (1994), Ferri (1994) e Leão & Silva (2003). No Rio Grande do Sul, dentre outros estudos, podem ser citados os de Gobbato (1940), Dias (1959), Bán (1979) e Mandelli (1984), os quais compararam a fenologia de diferentes cultivares na região da Serra Gaúcha ou em relação a outras regiões vitícolas
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