171,926 research outputs found
L'uso dei social media per il marketing e la comunicazione aziendale
No full textNo abstract availabl
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
Social mobile marketing: il marketing nell'era dell'ubiquitous internet, della sharing economy e dei big data
No full textLe trasformazioni indotte dalle nuove tecnologie di comunicazione richiedono un ripensamento radicale nell’approccio al marketing management. Il Social Mobile Marketing non può essere declinato come modalità specializzata e separata di marketing tecnologico o di canale, ma va concepito come un modo totalmente nuovo di fare marketing. Se i mercati sono conversazioni mediate, la tecnologia agisce nelle interazioni e nelle narrazioni di marca e le relazioni si configurano come processi di social sensemaking che non si possono analizzare distinguendo per canale o per media. La diffusione dei social media e delle tecnologie ubique e immersive richiede un cambio di passo teorico e manageriale. Ogni interazione infatti può essere «aumentata» attraverso l’utilizzo di contenuti in mobilità, l’accesso e il processamento ubiquo dei dati e le potenzialità di collaborazione offerte dalla portabilità dei social network. Con l’obiettivo di costruire un ponte sempre più agevole fra teoria e pratiche manageriali, questa nuova edizione del libro, profondamente aggiornata, si arricchisce di esempi e allarga lo sguardo sui fenomeni più recenti legati alla sharing economy e ai big data
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
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
The role of specific early trauma in adult depression: A meta-analysis of published literature. Childhood trauma and adult depression
No full textBackground: A large literature has long focused on the role of trauma in childhood and risk for psychological disorders in adulthood. Despite several studies performed, to date, it is not clear which weight have different childhood stressors specifically on the risk for depression in adult life. In the present study, we performed a meta-analysis of the literature in order to assess the effective role of childhood traumas as risk factor in the onset of depressive disorders in adults. Methods: Previously published papers investigating the exposure to childhood trauma and their association with depression in adult subjects were retrieved in literature through common databases. Meta-analysis was conducted by the RevMan software. The quality of studies was evaluated by an adapted version of the New-Ottawa Quality Assessment Scale bias publication was evaluated by the Egger's test. Meta-regression analysis was employed to detect potential confounders and/or moderating variables. Finally, a sensitivity analysis was post-hoc performed to control for potential confounders. Results: Emotional abuse showed the strongest association with depression (OR = 2.78) followed by neglect (OR = 2.75) and sexual abuse (OR = 2.42). Significant associations were also found for domestic violence (OR = 2.06) and physical abuse (OR = 1.98). Nevertheless, in post-hoc analysis, emotional abuse and neglect showed the strongest associations with depression as compared to other kinds of child trauma. Conclusions: These findings support the role of neglect and emotional abuse as significantly associated to depression. Sexual/physical abuse or violence in family may be unspecific risk factors for mental disturbance. Other kind of trauma may play a less relevant role in risk of adult depression, though they should be not underestimated
Mitoxantrone, Etoposide and intermediate dose ARA-C (MEC) for the treatment of refractory acute myeloid leukemia
No full textThe 3111T/C polymorphism interacts with stressful life events to influence patterns of sleep in females.
No full textGenetic variations in clock-relevant genes have been investigated in relation to sleep abnormalities, both in healthy populations and in mood-disorder patients with inconsistent results. Environmental influences may moderate associations between genes and phenotype. The authors examined the CLOCK 3111T/C polymorphism and several variants within the PER3 gene and their possible interaction with stressful life events in a group of female volunteers (n = 415). Gene-environment (G × E) interactions and gene main effects were investigated on depressive symptoms using the Beck Depression Inventory and on change of sleep patterns (Item 16). Results showed a G × E interaction on alteration of sleeping pattern: the 3111C homozygous genotype reported greater disruption in sleep pattern after the experience of stressful life events. Within the PER3 gene, one G × E interaction was observed with rs228642 on sleep change. These findings show that the 3111T/C polymorphism is not associated with depressive symptoms, but only with symptoms of sleep change in the case of prior stressful life experiences. The combination of a sensitive genotype (3111C/C) and environmental stress increases vulnerability to circadian rhythm disruption in females
Miglioramento della resistenza ad ossidazione di una lega y-TIAL mediante nanocristallizzazione superficiale ed effetto gettering.
No full text?-titanium aluminide alloys possess many attractive properties such as low density and good high temperature strength which recommend their use in moving structural parts at elevated temperatures. At present , applications as blades in gas turbines and as valves, turbocharger rotors, etc. in car engines are the aim of development in industry. The most limiting factor for their use as high temperature operating components is the weak oxidation resistance at temperatures in excess of 700 °C Two are the aims of this work : understanding the oxidation mechanism of TiAl alloys in relation with the influence of various parameters ( composition , microstructure ) on it and the development of new methods in order to increase the oxidation resistance.
In order to perform the first task the most promising methodologies are here presented : the chlorine effect , aluminizing , siliconizing , pack diffusion coatings.
We will finally propose two methods for oxidation resistance improvement : nanocrystallization via laser ablation and superficial chrome enrichment via vacuum interdiffusion of a chrome layer ( deposited via laser ablation ).The final result is the development of a new promising and versatile methodology which will extend the use of these materials at temperatures in excess of 900 °C .
Much attention is focused on the "numbers" of those phenomena : a finite - difference oxidative model will be developed in order to predict the oxide scale composition , the effect of the grain size on the oxidative behaviour and to calculate the thermal treating duration for the chrome interdiffusion step. The result is a very flexible and versatile approach
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