105,107 research outputs found
EnergycaMENTE
No full textIl binomio arte-energia, fenomeno oggi particolarmente “avanguardistico”, inizia a tracciare il suo percorso rivoluzionario a partire dai primi anni del XX secolo, in cui artisti di diversa nazionalità, interessi e stile realizzano opere inedite che manifestano la portata innovativa del fenomeno energetico. I primi a celebrare in Italia la tecnologia sono i Futuristi che nel Manifesto del 1909 cantano la bellezza dell’automobile superiore rispetto alla Nike di Samotracia, ed esaltano la velocità. Poco dopo l’artista greco contemporaneo Takis (n. 1925) rivela un interesse per l’elettricità e svolge le sue ricerche sull’energia come elemento intangibile; pertanto negli anni successivi espone le sue sculture telemagnetiche, in cui oggetti metallici legati ad un filo restano sospesi tramite dei magneti; o L’uomo volante, un corpo umano sospeso nell’aria grazie alla forza magnetica e i Telelumieres, lampade in cui elettrocalamite modificano l’intensità della luce
Who benefits from promoting small and medium scale enterprises ? some empirical evidence from Ethiopia
No full textThe Addis Ababa Integrated Housing Development Program aims to tackle the housing shortage and unemployment that prevail in Addis Ababa by deploying and supporting small and medium scale enterprises to construct low-cost housing using technologies novel for Ethiopia. The motivation for such support is predicated on the view that small firms create more jobs per unit of investment by virtue of being more labor intensive and that the jobs so created are concentrated among the low-skilled and hence the poor. To assess whether the program has succeeded in biasing technology adoption in favor of labor and thereby contributed to poverty reduction, the impact of the program on technology usage, labor intensity, and earnings is investigated using a unique matched workers-firms dataset, the Addis Ababa Construction Enterprise Survey. The data are representative of all registered construction firms in Addis and were collected specifically for the purpose of analyzing the impact of the program. The authors find that program firms do not adopt different technologies and are not more labor intensive than non-program firms. There is an earnings premium for program participants, who tend to be relatively well-educated, which is heterogeneous and highest for those at the bottom of the earnings distribution.Labor Markets,Access to Finance,Economic Theory&Research,Microfinance,Labor Policies
Seroepidemiology of hepatitis B virus in Addis Ababa Ethiopia: transmission patterns and vaccine control
No full textA community-based seroepidemiological survey of Addis Ababa, Ethiopia was conducted in 1994 to inform on the transmission dynamics and control of hepatitis B virus (HBV) infection. Venous blood from 4736 individuals under 50 years of age from 1262 households, selected using stratified cluster-sampling, was screened for HBV markers using commercial ELISAs. HBsAg prevalence was 7% (95% CI 6–8), higher in males (9%; 7–10) than females (5%; 4–6). HBeAg prevalence in HBsAg positives was 23% (18–29), and less than 1% of women of childbearing age were HBeAg positive. Overall HBV seroprevalence (any marker), rose steadily with age to over 70% in 40–49 year olds, indicating significant childhood and adult transmission. Estimated instantaneous incidence was 3–4/100 susceptibles/year, higher in males than females in 0–4 year olds, and peaking in early childhood and young adults. The age at which 50% had evidence of infection was around 20 years, and the herd immunity threshold is approximated at 63–77%. Addis Ababa is of intermediate-high HBV endemicity, with negligible perinatal transmission. Our main findings are the identification of a significant difference between males and females in the age-acquisition of HBV infection, and marked differences between age groups in HBV incidence rates. These results should target future research studies of underlying risk factors. Furthermore, we generate a crude estimate of the level of coverage of HBV vaccine that would be required to eliminate the virus from the study population
Seroepidemiology of measles in Addis Ababa Ethiopia: implications for control through vaccination
No full textWe undertook a representative survey of measles antibodies in Addis Ababa, Ethiopia 1994, to characterize immunity and transmission. Specific-antibody levels (IU/l) were determined by ELISA for 4654 sera from individuals aged 0–49 years (1805 <15 years) collected by stratified household-cluster sampling. The proportion seronegative (<100 IU/l) was 20% (95% CI : 16–25) in children 9–59 months old, declining to 9% (7–12) in 5–9 year olds, 5% (4–7) in 10–14 year olds, and <1% in adults. The proportion of children (<15 years old) with low-level antibody (100–255 IU/l) was 8% (7–10). Vaccination and an absence of a history of measles illness were strongly associated with low-level antibody. History of measles vaccination in 9 months to 14-year-old children was y80%. We estimate a primary vaccine failure rate of 21% (12–34) and continued high measles incidence of 22 per 100 susceptibles (19–24) per annum. Our data support the introduction of campaign vaccination in the city in 1998, although higher routine vaccine coverage is required to sustain the impact. The implications of a high prevalence of low-level antibody are discussed
Contractus in scriptis fieri placuit. Setzer e il formalismo convenzionale
No full textLo scritto offre una presentazione, condotta sia in chiave storica che di attualità positiva, della traduzione in lingua italiana dell’opera dedicata nel 1860 dal giurista tedesco G. Setzer alla Lex 17 cod. de fide instrumentorum, emanata da Giustiniano nel 528 d.C. e tradizionalmente considerata il dato positivo più antico in tema di formalismo convenzionale. La contestualizzazione delle posizioni di G. Setzer è assicurata da un’approfondita disamina delle critiche che, ad esse, sono state rivolte immediatamente dopo la pubblicazione dell’opera e in tempi più recenti, al fine di dimostrarne l’incidenza sulla formulazione letterale dell’art. 1352 c.c. italiano. Quest’ultima, contrariamente a quanto è sostenuto dall’orientamento consolidato della dottrina e della giurisprudenza, non è dunque riferibile al diritto romano, ma alla soluzione prevalsa, dopo un acceso dibattito, nell’ultima fase della Pandettistica, nella quale si preferì accordare preminenza al vincolo discendente da una regola di autonomia privata piuttosto che alla conservazione di uno stato di libera idoneità espressiva della volontà individuale, in piena conformità ad una concezione negoziale fortemente ancorata ai postulati dell’autoresponsabilità
Daredevil: Superheroes and Disability. Justice, Stigma and Law
No full textIn this chapter, we will focus on the figure of a superhero, in whose adventures disability often appears: the reflections developed here start from the character of Daredevil and from the representation given to him in cinema and in TV shows, rather than in Marvel comics. Our starting point is the story of Matthew Murdock, who became blind due to an accident with a radioactive substance that occurred as a teenager and who, as an adult, divides his time between the courtrooms, being a lawyer by day and a superhero who fights the criminals he couldn’t nail in the courtroom by night. Recalling the adventures of Daredevil will also allow us to question ourselves on more general theoretical legal issues: dealing with superheroes allows us to understand the legal and political shortcomings which make the presence of a superhero necessary. We will try to identify four possible fault lines and give a summary reading of them; the first of them concerns the ‘classic’ tension between law and justice, sometimes resulting in a decisive and radical distance
Sero-epidemiology of rubella in the urban population of Addis Ababa Ethiopia
No full textWe conducted a community-based cluster sample survey of rubella sero-epidemiology in Addis Ababa, Ethiopia in 1994. Among 4666 individuals for whom complete data were available, rubella antibody prevalence was 91% (95% confidence interval: 90, 92). On multivariable analysis, seroprevalence was lower among individuals who were resident in Addis Ababa for 1 year or less. Approx. 50% seroprevalence was attained by age 4 years, and the estimated average age at infection was 5·2 years. The highest age-specific force of infection was estimated to occur in 5- to 9-year-olds. The early age at infection corresponded with a low estimated incidence of congenital rubella syndrome (CRS) of 0·3 per 1000 live births, equivalent to nine cases of CRS in 1994. The predicted critical level of immunity for elimination of rubella via vaccination was 85–91%, requiring 89–96% coverage with a vaccine of 95% effectiveness. Unless very high coverage of rubella vaccine could be guaranteed, the introduction of childhood vaccination could increase the incidence of CRS in Addis Ababa
Buying a book as a Christmas gift: Two routes to customer immersion
No full textAlthough services and retailing are usually regarded as relevant experiential contexts and investments in creating an experiential environment are growing, little consideration has been given to the investigation of the general consumption experiences and their emotions in retailing. By adopting an ethnographic approach to study the buying processes in two Italian. bookstores - a small traditional family-run bookshop and a large international chain store - products that, by definition, are high in perceived complexity, and symbolism, we present two distinct business models based on different processes of valorisation of purchasers' emotions. The two-path model towards customer immersion. represents different strategies to involve consumers emotionally: one is based on increasing the positive emotional load, the other on decreasing the negative emotional load. Decisions about physical layout, display, services and sales assistance should,follow consistently
Buying a Book as a Christmas Gift: Two Routes to Customer Immersion
No full textAlthough services and retailing are usually regarded as relevant experiential contexts and investments in creating an experiential environment are growing, little consideration has been given to the investigation of the general consumption experiences and their emotions in retailing.
By adopting an ethnographic approach to study the buying processes in two Italian bookstores – a small traditional family-run bookshop and a large international chain store – that, by definition, are high in perceived complexity and symbolicity products, we present two distinct business models based on different processes of valorisation of purchasers’ emotions. The theoretical and managerial implications of these results are then described
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