Search results for "referential"
showing 10 items of 40 documents
Guanxi, performance and innovation in entrepreneurial service projects
2013
PurposeThis paper aims to analyze the role played by two dimensions of entrepreneurs' private social capital in the survival, growth and innovativeness of entrepreneurial service ventures: local size and preferential attachment degree.Design/methodology/approachData were collected by a questionnaire, the unit of investigation being the private entrepreneur in the service sector in the city of Shanghai. The questionnaire allows the authors to identify the social network of the entrepreneurs, estimate the empirical degree distribution for the entire sample, and estimate local size and preferential attachment degree.FindingsThere is empirical evidence that entrepreneurs do not create social ne…
Towards realistic artificial benchmark for community detection algorithms evaluation
2013
Many algorithms have been proposed for revealing the community structure in complex networks. Tests under a wide range of realistic conditions must be performed in order to select the most appropriate for a particular application. Artificially generated networks are often used for this purpose. The most realistic generative method to date has been proposed by Lancichinetti, Fortunato and Radicchi (LFR). However, it does not produce networks with some typical features of real-world networks. To overcome this drawback, we investigate two alternative modifications of this algorithm. Experimental results show that in both cases, centralisation and degree correlation values of generated networks…
Science in space vs space science: The European utilisation of spacelab∗
1999
Abstract Spacelab is the conventional name given to a manned laboratory to be carried onboard NASA's Space Shuttle, which was built in Europe under the aegis of the European Space Agency (ESA). This paper deals with the initiatives undertaken in Europe to establish a utilisation programme for Spacelab, in particular for its first flight, planned as a joint ESA/NASA demonstration mission. Two main factors will be discussed, which prevented ESA from establishing a sizeable Spacelab utilisation effort. Firstly, owing to the cost escalation of the Spacelab development programme and to NASA's charging policy for access to the Shuttle system, which did not foressee any preferential treatment to E…
DFT and kinetic evidences of the preferential CO oxidation pattern of manganese dioxide catalysts in hydrogen stream (PROX)
2022
Abstract The oxidation functionality of Mn(IV) sites has been assessed by density functional theory (DFT) analysis of adsorption and activation energies of CO, H2 and O2 on a model Mn4O8 cluster. DFT calculations indicate that Mn(IV) atoms prompt an easy CO conversion to CO2 via a reaction path involving both catalyst and gas-phase oxygen species, while much greater energy barriers hinder H2 oxidation. Accordingly, a MnCeOx catalyst (Mnat/Ceat, 5) with large exposure of Mn(IV) sites shows a remarkable CO oxidation performance at T ≥ 293 K and no H2 oxidation activity below 393 K. Empiric kinetics disclose that the catalyst-oxygen abstraction step determines both CO and H2 oxidation rate, al…
Social media e comunicazione fatica: verso una tipologia delle pratiche in rete
2017
Social media and fatic communication: toward a typology of practices in the web. It is often said that the communicative functioning of social networks is based on the “fatic function” of language and, in general, of semiosis. The purpose of this paper is to clarify the conceptual meaning of this notion, returning to the fundamental authors who have coined it; and therefore to show its relationships with the referential function, on the one hand, and the expressive one, on the other. Hence, another aim of the paper is sketch a typology of facebook users, halfway between desire to share and self-construction project.
The Attributive/Referential Distinction, Pragmatics, Modularity of Mind and Modularization
2011
In this paper I deal with the attributive/referential distinction. After reviewing the literature on the issue, I adopt Jaszczolt's view based on default semantics. I relate her view to Sperber and Wilson's Principle of Relevance. I argue in favour of the modularity hypothesis in connection with pragmatic interpretations. I also discuss the issue of modularization a la Karmiloff-Smith in connection with default inferences and, in particular, referential readings of NPs. I reply to some considerations by Cummings and use data from referential/attributive uses of NPs to show that the modularity hypothesis is defensible.
A cross-linguistic comparison of reference across five signed languages
2022
AbstractDo signers of different signed languages establish and maintain reference the same way? Here we compare how signers of five Western deaf signed languages coordinate fully conventionalized forms with more richly improvised semiotics to identify and talk about referents of varying agency. The five languages (based on a convenience sample) are Auslan, Irish Sign Language, Finnish Sign Language, Norwegian Sign Language, and Swedish Sign Language. Using ten retellings ofFrog, Where Are You?from each language, we analyze tokens of referring expressions with respect to: (a) activation status (new vs. maintained vs. re-introduced); (b) semiotic strategy (e.g., pointing sign, fingerspelling,…
Discovery-learning in grammar education:a study on anaphoric pronouns
2022
En les darreres dècades, en el context educatiu portuguès, com en altres països, la gramàtica ha estat un tema central de debat en l’educació L1. L’any 2001, amb la publicació del Currículum Nacional d’Educació Bàsica, la gramàtica, que es va anomenar «coneixement explícit de la llengua», es va considerar un dels components bàsics del currículum de L1 portuguès. Des d’aquesta perspectiva, inspirada en les propostes del moviment anglosaxó de consciència lingüística, l’objectiu principal de l’educació gramatical és desenvolupar els coneixements implícits que els infants ja tenen i utilitzen en un coneixement cada cop més reflexiu i explícit. En aquesta concepció, en què se suposa que «la majo…
Is recursion language-specific? Evidence of recursive mechanisms in the structure of intentional action
2014
In their 2002 seminal paper Hauser, Chomsky and Fitch hypothesize that recursion is the only human-specific and language-specific mechanism of the faculty of language. While debate focused primarily on the meaning of recursion in the hypothesis and on the human-specific and syntax-specific character of recursion, the present work focuses on the claim that recursion is language-specific. We argue that there are recursive structures in the domain of motor intentionality by way of extending John R. Searle's analysis of intentional action. We then discuss evidence from cognitive science and neuroscience supporting the claim that motor-intentional recursion is language-independent and suggest so…
Nonmonotone Saturation Profiles for Hydrostatic Equilibrium in Homogeneous Porous Media
2012
Nonmonotonic saturation profiles (saturation overshoot) occur as travelling waves in gravity driven fingering. They seem important for preferential flow mechanisms and have found much attention recently. Here, we predict them even for hydrostatic equilibrium when all velocities vanish. We suggest that hysteresis suffices to explain the effect. Recently, the observation of nonmonotonicity of traveling wave solutions for saturation profiles during constant-flux infiltration experiments has highlighted the shortcomings of the traditional, seventy year old mathematical model for immiscible displacement in porous media. Several recent modifications have been proposed to explain these observation…