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1.
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.  相似文献   
2.
According to classical literature on delegation in the regulatory state, independent regulators are established to enhance the credibility of regulatory policies. In that regard, anti-corruption agencies (ACAs) are peculiar not only because they deal with extremely salient issues, but also because they receive delegated competencies from the government as the “principal” while, at the same time, the government is their regulatory target. How do governments manage regulatory reforms to strike a balance between gaining credibility as “principals” and possibly losing credibility as targets? Drawing from insights on historical institutionalism, this article undertakes a qualitative longitudinal analysis of organizational change regarding ACAs in Italy, where these kinds of agencies are particularly relevant to political leaders. The findings shed light on delegation as a dynamic process for which multiple factors intersect over time.  相似文献   
3.
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.  相似文献   
4.
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.  相似文献   
5.
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.  相似文献   
6.
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.  相似文献   
7.
This work describes the procedures, the different techniques and the pipeline used for creating a digital framework that should assist the Superintendence of Pompeii in the digital reconstruction, classification, management and visualisation of archaeological finds inside an advanced 3D web-based repository of reality-based data. Specific topics have been focused on the quality assessment procedures adopted to ensure consistency and reliability of data throughout the whole 3D models acquisition and pipeline creation, as well as on the particular semantic reality-based structure adopted to develop an information system into a knowledge one. The main purposes of our framework have been the usage of 3D digital models as a restitution of the real object and as a metaphor for navigating through the data; 3D models were used as archaeological cognitive systems and developed as a collection of structured objects, identified through a precise terminology that allows to easily extend the concept of 2D GIS to 3D GIS. In addition, the system was developed as a scalable application that allows the use of the same database by different users, simply filtering the data according to the specific requirements, and can operate both as standalone and web-based application.  相似文献   
8.
Abstract

This paper examines Italy's contribution to the United Nations (UN) and how effective this has been in protecting Italian interests. The first part outlines the areas where Italy's input to the UN has been most relevant in terms of ideas, policies and participation, such as for example the campaign to ban the death penalty and its participation in collective security through participation in UN peacekeeping missions. This paper also highlights the critical role that Italy's long-standing positions on UN reform and the enlargement of the Security Council have played in defining Italy's status in the international community, and asks whether there have been significant changes in the traditional Italian position and its loyalty to the UN and, more generally, to the multilateral system. The second part analyzes the origin and rationale of Italy's policies toward the UN and their effectiveness in defining and defending the national interest. It explores the idea that these policies have been determined by the ‘institutional multilateralism’ of the Italian Constitution, the ‘genetic multilateralism’ of the Italian society and the ‘forced multilateralism’ of Italy as a middle-range power. Italy's positions on the UN and its reform are examined in the light of claims that Italy's foreign policy reflects its ‘complex of exclusion’ and presumed lack of influence in the ‘major stakes’ in world diplomacy.  相似文献   
9.
Gortyn was an important Cretan town from the late Archaic to the Hellenistic period and then became one of the provincial capitals of the Roman Empire. It controlled the whole of Crete and Cyrenaica and was a flourishing centre of trade and agricultural products in the first centuries of our era. In more than 100 years, many portions of the Greek and Roman town were unearthed under the supervision of the Italian Archaeological School of Athens and a considerable number of stone artefacts found, many of them made of imported marble since the local variety was grey and of poor quality. Statuary and other prestigious marble sculpted artefacts found in Gortyn were sampled and subjected to archaeometric examination (by way of optical microscopy in thin section, powder X-Ray diffraction and mass spectometry for the determination of the C and O isotopic ratio) in order to identify the quarries they came from. The results obtained from the analysis of several dozen white marble objects have indicated the use of a quite wide variety of species including Parian (from Lakkoi), Pentelic, Thasian (dolomitic and calcitic) and (occasionally) Proconnesian marbles. The first three, especially Pentelic, were used for most of the statuary.  相似文献   
10.
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