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51.
Collaborations with Scientific Partners: The Mediating Role of the Social Context in Fostering Innovation Performance 下载免费PDF全文
Valentina Lazzarotti Raffaella Manzini Anna Nosella Luisa Pellegrini 《Creativity & Innovation Management》2016,25(1):142-156
The success of collaboration between firms and scientific partners is still debated. Although a firm's social context seems to be crucial to explain the success or failure of such collaboration in terms of innovation performance, a deep analysis of the context role is still lacking. Therefore, the aim of this paper is to analyse whether a firm's internal climate as well as the quality of the relationships with scientific partners can mediate the relationship between collaboration and innovation performance. Results, based on survey research developed in Finland, Italy and Sweden, suggest that collaborations with scientific partners achieve good results in terms of innovation performance, through an explanation path which involves a firm's social context. 相似文献
52.
Composite gas separation membranes with a 0.1–3 μm thick film of Hyflon AD 60X on a porous hollow fibre ultrafiltration membrane support of amorphous poly(ether ether ketone), were prepared. The influence of the coating conditions on the film thickness and on the pure gas transport properties was studied. The gas transport properties were related to the film thickness and to the morphology of the supporting UF membrane. 相似文献
53.
We consider the problem of designing approximation schemes for the values of mean-payoff games. It was recently shown that (1) mean-payoff with rational weights scaled on [−1,1] admit additive fully-polynomial approximation schemes, and (2) mean-payoff games with positive weights admit relative fully-polynomial approximation schemes. We show that the problem of designing additive/relative approximation schemes for general mean-payoff games (i.e. with no constraint on their edge-weights) is P-time equivalent to determining their exact solution. 相似文献
54.
Raffaella Paparcone Markus J. Buehler 《JOM Journal of the Minerals, Metals and Materials Society》2010,62(4):64-68
Amyloids are associated with severe degenerative diseases and show exceptional mechanical properties, in particular great
stiffhess. Amyloid fibrils, forming protein nanotube structures, are elongated fibers with a diameter of ≈8 nm with a characteristic
dense hydrogen-bond (H-bond)patterning in the form of beta-sheets (β-sheets). Here we report a series of molecular dynamics
simulations to study mechanical failure properties of a twofold symmetric Aβ(l–40) amyloid fibril, a pathogen associated with
Alzheimer’s disease. We carry out computational experiments to study the response of the amyloid fibril to compressive loading.
Our investigations reveal atomistic details of the failure process, and confirm that the breakdown of H-bonds plays a critical
role during the failure process of amyloid fibrils. We obtain a Young’s modulus of ≈12.43 GPa, in dose agreement with earlier
experimental results. Our simulations show that failure by buck-ling and subsequent shearing in one of the layers initiates
at ≈1% compressive strain, suggesting that amyloid fibrils can be rather brittle mechanical elements. 相似文献
55.
This paper uses a partially ordered set of syntactic categories to accommodate optionality and licensing in natural language
syntax. A complex but well-studied data set pertaining to the syntax of quantifier scope and negative polarity licensing in
Hungarian is used to illustrate the proposal. The presentation is geared towards both linguists and logicians. The paper highlights
that the main ideas can be implemented in different grammar formalisms, and discusses in detail an implementation where the
partial ordering on categories is given by the derivability relation of a calculus with residuated and Galois-connected unary
operators. 相似文献
56.
Paola Salvadeo Raffaella BoggiaFilippo Evangelisti Paola Zunin 《Food chemistry》2007,105(3):1228-1235
This paper describes the development and application of a new analytical method for the analysis of the volatile fractions of pesto, a typical Italian basil-based pasta sauce, and its ingredients. The extraction of the volatile fraction was realized by headspace sorptive extraction (HSSE) and the extracted volatiles were then thermodesorbed, cryoconcentrated in a cooled injector and analysed by gas chromatography-mass spectrometry. 相似文献
57.
Raffaella Gianferri Virginia D’AiutoRoberta Curini Maurizio DelfiniElvino Brosio 《Food chemistry》2007,105(2):720-726
Proton transverse magnetization decay curves of Mozzarella di Bufala Campana samples were measured and analysed for the presence in the sample of four components, namely “serum water”, “entrapped water”, “junction zone water” and “fat”, characterised by different transverse relaxation times, T2. T2 values were interpreted on the basis of the diffusive and chemical exchange model that allowed information to be obtained on the size of diffusive domains and dynamics of the water molecules. Furthermore, T2 values were measured as a function of the aging time of Mozzarella samples, as produced by different cheese-makers. A decrease of “serum water” T2 value with aging time was found and this may be used to monitor the evolution of Mozzarella samples up to seven days after manufacture. 相似文献
58.
The behavior and performance of a UMTS network are governed by a number of parameter settings that are configured by the network operator, e.g., timeouts. In this letter we show that the actual value of such parameters can be inferred by a conceptually simple set of end-to-end measurements, without any cooperation with the network operator. In principle, such information can be used by researchers to define realistic network scenarios, e.g., for their simulations. Moreover, it can be used by a malicious attacker to fine-tune a large scale attack against the radio access network, e.g., a paging attack. 相似文献
59.
Raffaella Micillo Lucia Panzella Kenzo Koike Giuseppe Monfrecola Alessandra Napolitano Marco d’Ischia 《International journal of molecular sciences》2016,17(5)
Recent advances in the chemistry of melanins have begun to disclose a number of important structure-property-function relationships of crucial relevance to the biological role of human pigments, including skin (photo) protection and UV-susceptibility. Even slight variations in the monomer composition of black eumelanins and red pheomelanins have been shown to determine significant differences in light absorption, antioxidant, paramagnetic and redox behavior, particle morphology, surface properties, metal chelation and resistance to photo-oxidative wear-and-tear. These variations are primarily governed by the extent of decarboxylation at critical branching points of the eumelanin and pheomelanin pathways, namely the rearrangement of dopachrome to 5,6-dihydroxyindole (DHI) and 5,6-dihydroxyindole-2-carboxylic acid (DHICA), and the rearrangement of 5-S-cysteinyldopa o-quinoneimine to 1,4-benzothiazine (BTZ) and its 3-carboxylic acid (BTZCA). In eumelanins, the DHICA-to-DHI ratio markedly affects the overall antioxidant and paramagnetic properties of the resulting pigments. In particular, a higher content in DHICA decreases visible light absorption and paramagnetic response relative to DHI-based melanins, but markedly enhances antioxidant properties. In pheomelanins, likewise, BTZCA-related units, prevalently formed in the presence of zinc ions, appear to confer pronounced visible and ultraviolet A (UVA) absorption features, accounting for light-dependent reactive oxygen species (ROS) production, whereas non-carboxylated benzothiazine intermediates seem to be more effective in inducing ROS production by redox cycling mechanisms in the dark. The possible biological and functional significance of carboxyl retention in the eumelanin and pheomelanin pathways is discussed. 相似文献
60.
Consumer demand for pomegranate juice has considerably grown, during the last years, for its potential health benefits. Since it is an expensive functional food, cheaper fruit juices addition (i.e., grape and apple juices) or its simple dilution, or polyphenols subtraction are deceptively used. 相似文献