What Makes SMEs more Likely to Collaborate? Analysing the Role of Regional Innovation Policy

The last 20 years have witnessed the diffusion of regional innovation policies supporting networks of innovators. The underlying aim of these policies is to encourage firms, particularly small and medium-sized enterprises (SMEs), to undertake collaborations with organizations possessing complementary knowledge. Focusing on a set of SMEs that have participated, over time, in several innovation networks funded by the same regional government, the paper investigates how their relationships have evolved with respect to the following aspects: (i) reiteration of pre-existing relationships as opposed to experimentation with new relationships; (ii) collaboration with organizations possessing complementary rather than similar knowledge and competencies; (iii) creation of local relationships rather than experimentation with extra-local collaborations; (iv) reliance upon intermediaries to connect with other organizations. Our findings reveal that the involvement in these policy-supported networks changed the firms' relational patterns, leading them to collaborate with a wider variety of agents than those with whom they were linked before the policies. Sectoral heterogeneity had a negative effect on the probability of collaborating, while co-localization increased the likelihood of collaborating. Mutual involvement with intermediaries also had a positive effect. However, in the case of firm-to-university relationships only specialized intermediaries were likely to perform a positive role and, therefore, encourage networking.     

Probable persistence of the remains of a Rouget-Neumann sheath into the canalicular system of ancient human bone

Examining histological sections obtained from human bones from Iron Age archaeological excavations (about third to fifth century BC , Alfedena and Sulmona, central Italy), the authors show the presence of an amorphous, afibrillary substance inside the osseous canaliculus in decalcified sections. This substance has shown unusual chromaffinity to staining using the Schmorl method with thionine and phosphowolframic acid. It is probably formed by acid mucopolysaccharides obtained from a transitory betametachromasia with toluidine blue staining at neutral pH. This metachromasia persists after digestion in bacterial collagenesis, but disappears after digestion in bovine testicular jaluronidasis. These reactions indicate that the endocanalicular substance may represent well-kept remains of a Rouget-Neumann sheath, which surrounds cytoplasmic extensions of osteocytes.     

The City Evita Built. Cinematic Childhood and Peronism in Luis César Amadori’s Soñemos (1951)

This article examines the under-studied film productions known in Peronist Argentina as “docudramas”. Placing documentary elements within a fictional plot, docudramas marked a significant change in the state propaganda machine and were used as a new vehicle to influence social habits. I focus particularly on Soñemos [Let’s Dream], a short film directed in 1951 by Luis César Amadori to showcase urban reforms. Through an analysis of Amadori’s docudrama in regard to its representation of the Children’s City built by the Eva Perón Foundation, I discuss relationships between entertainment, the constitution of a political hegemony, and modernisation. With film techniques such as the dissolve, Soñemos depicts the Children’s City as an enterprise capable of delivering material happiness and amplifies the narrative of a fairy tale come true promised by Evita’s social service programmes. Ultimately, the docudrama affirms the central role played by the state in the definition of the “right to a home” – from supportive benefactor to constitutive replacement.     

Thermal and Petrographic Characterization of Herculaneum Wall Plasters

Roman plasters sampled from different houses at the archaeological site of Herculaneum, Italy, (2010–12) were studied by means of petrography, thermal analysis and X‐ray fluorescence. Herculaneum plasters are composed by preparatory layers (arriccio) with a thickness of several centimetres and are based on a calcitic binder and volcanic scoriae as aggregates, covered by a thin final layer characterized by a low granulometry. Most of the sampled plasters can be placed into two groups based on the aggregate composition and classified as marmorino or intonachino. However, a similar aggregate composition did not induce superimposable thermal behaviour, thus suggesting that the samples underwent different ageing/weathering processes, with a consequent change of the ratio among the components.     

Methodological aspects of SANS and TOF neutron diffraction measurements on pottery: the case of Miseno and Cuma

Small angle neutron scattering and neutron phase analysis techniques have been for the first time jointly employed to extract microscopic parameters of ceramic samples prepared under controlled conditions, in an attempt to establish a protocol for deriving information on the firing process. Data have also been collected on two series of early medieval samples from the Italian regions of Cuma and Miseno. The variation of the microscopic features observed on these samples could mirror some technological evolution in the period spanning from the 6th to the 12th century AD.     

A dendrochronological investigation of stringed instruments from the collection of the Cherubini Conservatory in Florence,Italy

A total of forty-nine stringed instruments of the Conservatory Cherubini collection, at the Musical Instruments Department of the Accademia Gallery in Florence, were submitted to a dendrochronological investigation in order to date them, check the validity of their attribution and to find out more about their construction characteristics. Thirty-seven instruments were successfully dated, thereby determining the terminus post quem date of manufacture. The correlation values of the statistical cross-dating tests were generally very high. The dendrochronological analyses determined which instruments had been made from wood of the same provenance and, in some cases, from the same tree trunk. The mean chronology built from the musical instrument series, named “Accademia Master Chronology”, is 558 years long and dates from 1396 to 1953AD. The interval between the youngest ring dated dendrochronologically and the given date of manufacture increased constantly in the course of the centuries, from a mean value of just over eleven years for instruments built in the eighteenth century, to nearly 74 years in the twentieth century, when the use of old wood from other artefacts became more frequent. Furthermore, in the Cherubini Collection, the average tree rings on violins are smaller than those of other stringed instruments; in fact, they increase in proportion to instrument size and are widest in cello and double bass.     

ON SPATIAL DYNAMICS*

ABSTRACT It has long been recognized that the forces that lead to the agglomeration of economic activity and to aggregate growth are similar. Unfortunately, few formal frameworks have been advanced to explore this link. We critically discuss the literature and present a simple framework that can circumvent some of the main obstacles we identify. We discuss the main characteristics of an equilibrium allocation in this dynamic spatial framework, present a numerical example to illustrate the forces at work, and provide some supporting empirical evidence.