“Social Return and Financing of Urban Regeneration Policiesâ€

This paper analyses an alternative measurement framework capable of capturing the return on investment of urban regeneration projects through a cost-benefit analysis. Financial returns on investment are calculated as the ratio between the benefits accruing from the performance of a given project and the funds involved in their implementation. Both, benefits and funds, must be named in monetary terms. However in urban regeneration projects, due to their dual economic and social nature, is more difficult to quantify the profits generated because most of them are subjective (greater quality of life, better community welfare, etc.). There is a wide array of value taking place in a urban regenerative process (economic value, blended value, social value) some of which are measurable in a traditional Investment/Return framework (with its implicit economic returns assumption) and more of which are not so that they remain partially hidden from stakeholders. Based on the foregoing, the purpose of this study is twofold: to go deeply on the cost-effectiveness ratio of urban regeneration projects through consideration of social impacts and to analyze some new alternative funding formulas that arise particularly in a time of financial constraint. The papers argues that the SROI (Social Return On Investment) method appears as the most appropriate measurement tool to capture the full public benefit as well as the Tax Increment Financing and the Joint European Support for Sustainable Investment in City Areas –Jessica, seem to be two innovative financing formulas based on a market approach.

On the solitons of the Chern-Simons-Higgs model

Several issues concerning the self-dual solutions of the Chern-Simons-Higgs model are addressed. The topology of the configuration space of the model is analysed when the space manifold is either the plane or an infinite cylinder. We study the local structure of the moduli space of self-dual solitons in the second case by means of an index computation. It is shown how to manage the non-integer contribution to the heat-kernel supertrace due to the non-compactness of the base space. A physical picture of the local coordinates parametrizing the non-topological soliton moduli space arises .Comment: 27 pages, 3 figures, to appear in The European Physical Journal

Self-Dual Vortices in Abelian Higgs Models with Dielectric Function on the Noncommutative Plane

We show that Abelian Higgs Models with dielectric function defined on the noncommutative plane enjoy self-dual vorticial solutions. By choosing a particular form of the dielectric function, we provide a family of solutions whose Higgs and magnetic fields interpolate between the profiles of the noncommutative Nielsen-Olesen and Chern-Simons vortices. This is done both for the usual $U(1)$ model and for the $SU(2)\times U(1)$ semilocal model with a doublet of complex scalar fields. The variety of known noncommutative self-dual vortices which display a regular behaviour when the noncommutativity parameter tends to zero results in this way considerably enlarged

Are there biological gender differences at the early stages of first language acquisition when producing double object constructions and to/for-datives?

Producción CientíficaThis study examines whether biological gender differences appear in the early stages of acquisition in the case of English dative alternation (DA) structures (double object constructions (DOCs) and to/for-datives). Girls have been found to show faster syntactic development when compared to boys (Lovas, 2011). In the case of the acquisition of DA, an order in the emergence and in the incidence of English DA would entail a syntactic derivational status between DOCs and to/for-datives with one being the original structure and the other the derived one (Gu, 2010). However, analogous ages of onset and fairly similar frequency rates in the production could suggest the construction of two underived structures. We investigate whether biological gender differences appear in the case of DOCs and to/for-datives. We also investigate whether the exposure to English DA (adult input) results in differences between the girls’ output and the boys’ output. We analyze data from eight monolingual English girls and five monolingual English boys, and the adults that interact with them, as available in CHILDES. Our findings reveal that monolingual girls and monolingual boys pattern closely in the acquisition of the syntactic non-derivational relationship between DOCs and to/for-datives, as seen in their similar emergence. Biological gender differences are not seen either in the acquisition of the additional properties of to/for-datives given their later onset and their lower incidence when compared to DOCs. These production patterns also correlate with the frequency with which these structures are heard in the adult input.Junta de Castilla y León (programa de apoyo a proyectos de investigación - Ref. VA009P17)Ministerio de Ciencia, Innovación y Universidades (ref. PGC2018-097693-B-I00

A syntactic-semantic analysis of English (non)-dativizable constructions in the production of a set of 2L1 English/Spanish simultaneous bilingual twins

This paper analyzes the syntactico-semantic factors which trigger Dative shift in English dativizable verbs, i.e. those verbs that allow alternation between double object and prepositional complement constructions. It also focuses on non-dativizable verbs that restrict their subcategorization framework to either double object or prepositional complement constructions. This syntactico-semantic relation between dativizable and nondativizable structures is addressed in acquisition by examining the incidence for the two verb types in a set of English/Spanish 2L1 bilingual twins. Our results show that the syntactic and semantic features that dativizable and non-dativizables present go hand in hand with the age of first occurrence and the language development of the participants. Hence, dativizable to-dative double object constructions (DOC) are the utterances produced the earliest at the age of 2, as opposed to dativizable to/for-datives and non-dativizable constructions, which begin to emerge at around the age of 3. Finally, our results also suggest that the high adult input frequency explains the twins' early production of dativizable structures and that, in the same way, the children's low exposure to non-dativizable utterances correlates with the later occurrence in the twins' spontaneous production.peer-reviewe

On the derivatives of generalized Gegenbauer polynomials

We prove some new formulae for the derivatives of the generalized Gegenbauer polynomials associated to the Lie algebra $A_2$.Comment: 3 pages, no figures; submitted to Theor. Math. Phy

Understanding the Dynamics of the US External Position

This paper studies the dynamics of the U.S. external position for the past 35 years, and examines alternative paths for future external adjustment. We develop a new present value expression for the external position that embeds the restrictions of international solvency and can be easily empirically evaluated with time series methods. Our empirical model accounts for almost all the variations in the U.S. external position between 1973 and 2008. We estimate that most of the quarter-by-quarter changes in the U.S. external position over this period are due to news about future returns and trade flows, but over long horizons the changes reflect prior expectations about how the U.S. would meet its international financial obligations. Importantly, we identify the expectations embedded in the current U.S. external position that contain relevant information about the future adjustment paths. These expectations indicate that the half-lives for future adjustment paths towards U.S. external balance are at least 13 years and involve a significant real depreciation of the dollar.Capital Flows, External Imbalances, International Debt, International Solvency

On the spectrum of nonrelativistic AdS/CFT

We develop a Hamiltonian picture for a family of models of nonrelativistic AdS/CFT duality. The Schrodinger group is realized via the conformal quantum mechanics of De Alfaro, Fubini and Furlan in the holographic direction. We show that most physical requirements, including the introduction of harmonic traps, can be realized with exact AdS metrics, but without any need for exotic matter sectors in the bulk dynamics. This Hamiltonian picture can be used to compare directly with many-body spectra of fermions at unitarity on harmonic traps, thereby providing a direct physical interpretation of the holographic radial coordinate for these systems. Finally, we add some speculations on the dynamical generation of mass gaps in the AdS description, the resulting quasiparticle spectra, and the analog of `deconfining' phase transitions that may occur.Comment: 20 pages and 1 figure; typos corrected, references added; references added, minor changes matching published versio