The Fed and the Stock Market

The Fed closely monitors the stock market and the stock market continuously forms expectations about the Fed decisions. What does this imply for the relation between the fed funds rate and the S&P500? We find that the answer depends on the conditions prevailing on the financial market. During periods of high (low) volatility in asset price inflation an unexpected 5 fall in the stock market index implies that the Fed cuts the interest rate by 19 ($6$) basis points while an unanticipated policy tightening of 50 basis points causes a 4.7 (2.3) decline in the S&P500. The Fed reaction to asset price return is however statistically different from zero only in the high volatility regime, whereas the fall in asset price return following an interest rate rise is highly significant during normal times onlyasset price volatility, nonlinear policy, threshold SVAR, system GMM.

Organization and structure of the chain in the Integrated Projects of Food Chain in Basilicata region: the effects on the new rural dynamics

The introduction of the Integrated Projects of Food Chain requires the development of models capable of interpreting the dynamics of vertical and horizontal coordination between agents and the definition of the issues that most affect the ability of professionals to provide value added to goods and products to acquire in exchange a competitive advantage. With reference to the Basilicata region, the production structure of the region and the recent development of the Integrated Projects of Food Chain, this research has developed a new model of territorial organization of rural development. Now connect a new food chain model that combines theories of productivity, typical of contract economic, with those of social welfare and environmental economics: multifunctionality and biodiversity related to the needs of income and efficiency of companies in various stages of the food chain classic, in a context in which planning consultation is major determinant of local and regional development.Food Chain, Rural Development, Integrated Project of Food Chain., Agribusiness, Agricultural and Food Policy, Community/Rural/Urban Development, Food Consumption/Nutrition/Food Safety, Labor and Human Capital,

Rural development in the area of Pollino: integrated design of an “atypical” chain

The introduction of the Integrated Projects of Food Chain requires the development of models capable of interpreting the dynamics of vertical and horizontal coordination between agents and the definition of the issues that most affect the ability of professionals to provide value added to goods and products to acquire in exchange a competitive advantage. With reference to setting up Local Production System of the Pollino - Lagonegrese, characterized by the development of an "atypical" food chain, for which the main factor of integration and competitive advantage lies in the strong link between companies and territory and in the social and economic value of the protected area agriculture, this research has developed a new model for food chain that combines theories of productivity with those of social welfare and environmental economics: multifunctionality and biodiversity related to the needs of income and efficiency of companies in various stages of the food chain classic.Food Chain, Protected areas, Rural Development, Integrated Project of Food Chain, Local Production System Pollino-Lagonegrese, Community/Rural/Urban Development,

Gamma ray tests of Minimal Dark Matter

We reconsider the model of Minimal Dark Matter (a fermionic, hypercharge-less quintuplet of the EW interactions) and compute its gamma ray signatures. We compare them with a number of gamma ray probes: the galactic halo diffuse measurements, the galactic center line searches and recent dwarf galaxies observations. We find that the original minimal model, whose mass is fixed at 9.4 TeV by the relic abundance requirement, is constrained by the line searches from the Galactic Center: it is ruled out if the Milky Way possesses a cuspy profile such as NFW but it is still allowed if it has a cored one. Observations of dwarf spheroidal galaxies are also relevant (in particular searches for lines), and ongoing astrophysical progresses on these systems have the potential to eventually rule out the model. We also explore a wider mass range, which applies to the case in which the relic abundance requirement is relaxed. Most of our results can be safely extended to the larger class of multi-TeV WIMP DM annihilating into massive gauge bosons.Comment: 25 pages, 8 figures. v2: a few comments and references added, matches version published on JCA

Weak Corrections are Relevant for Dark Matter Indirect Detection

The computation of the energy spectra of Standard Model particles originated from the annihilation/decay of dark matter particles is of primary importance in indirect searches of dark matter. We compute how the inclusion of electroweak corrections significantly alter such spectra when the mass M of dark matter particles is larger than the electroweak scale: soft electroweak gauge bosons are copiously radiated opening new channels in the final states which otherwise would be forbidden if such corrections are neglected. All stable particles are therefore present in the final spectrum, independently of the primary channel of dark matter annihilation/decay. Such corrections are model independent.Comment: 38 pages (half are technical appendices), 7 figure

Asymmetric dark matter: residual annihilations and self-interactions

Dark matter (DM) coupled to light mediators has been invoked to resolve the putative discrepancies between collisionless cold DM and galactic structure observations. However, $\gamma$-ray searches and the CMB strongly constrain such scenarios. To ease the tension, we consider asymmetric DM. We show that, contrary to the common lore, detectable annihilations occur even for large asymmetries, and derive bounds from the CMB, $\gamma$-ray, neutrino and antiproton searches. We then identify the viable space for self-interacting DM. Direct detection does not exclude this scenario, but provides a way to test it.Comment: 20 pages, 4 figure

Optical spectra of solids obtained by time-dependent density-functional theory with the jellium-with-gap model exchange-correlation kernel

Within the framework of ab initio time-dependent density-functional theory (TD-DFT), we propose a static approximation to the exchange-correlation kernel based on the jellium-with-gap model. This kernel accounts for electron-hole interactions and it is able to address both strongly bound excitons and weak excitonic effects. TD-DFT absorption spectra of several bulk materials (both semiconductor and insulators) are reproduced in very good agreement with the experiments and with a low computational cost.Comment: 5 pages, 3 figures, 1 tabl

Aggiornamento delle conoscenze relative alla fauna ittica del Lago di Mergozzo (VB) con brevi note gestionali

No abstract availableLa presente relazione si propone di analizzare sinteticamente lo stato della fauna ittica del Lago di Mergozzo (VB), ed evidenziarne le peculiarit? e criticit? confrontando i dati attuali con quelli relativi ad indagini dettagliate effettuate in passato (Giussani 1994). Il campionamento dell\u27ittiofauna del Lago di Mergozzo rientra nelle attivit? incluse in due progetti di ricerca e gestione delle risorse idriche finanziati dalla Comunit? Europea: il progetto WISER (www.wiser.eu) e il progetto LIFE + Inhabit (www.life-inhabit.it), entrambi focalizzati alla implementazione della Direttiva Europea sulle Acque (2000/60/CE). Tali progetti, finalizzati all\u27utilizzo di indicatori biologici per valutare lo stato ecologico degli ecosistemi acquatici, vedono l\u27impegno comune di realt? come ARPA Piemonte e numerosi e qualificati Istituti di Ricerca Italiani ed Esteri, tra cui il CNR-ISE. Al di l? dell\u27impegno istituzionale legato a progetti di ricerca su larga scala, il CNR-ISE si propone di redigere la presente relazione anche con lo scopo di fornire agli attori locali (Comune di Mergozzo, Associazione Pescatori del Lago di Mergozzo e, in secondo luogo, Provincia del VCO) informazioni utili alla conoscenza e gestione dell\u27ittiofauna di questo lago

Synthesis and properties of new macrocyclic derivates

2017 - 2018This PhD thesis is concerned with the design, synthesis and the characterization of new macrocyclic derivatives. Development of new macrocyclic compounds is a particularly interesting because they can involve like building block in Supramolecular chemistry and Nanochemistry. In the first place, I studied the supramolecular properties of different derivatives of the resorcin[6]arenes. Crystal of Resorcin[6]arene was obtained and it reveals that in the solid state the resorcin[6]arene assembles in a twin molecular capsule able to host toluene and ethyl acetate solvent molecules. Subsequently, I have reported the first example of resorcin[6]arene-based cavitand. Sulfate bridges play a double role, both, as structural element for the preorganization of the larger resorcin[6]arene macrocycle and as functional supramolecular interacting groups. Finally, I develop a new multivalent systems resorcin[n]arene based for inhibition of glycosidases and mannosidase that are involved in the malignant transformation of cells. These derivatives were synthetized starting to a pyrrolidine-based iminosugar and resorcinarenes compounds through CuAAS cycloaddition. Biological essays showed that all the resorcinarene derivatives have a good inhibitory activity towards mannosidase enzymes. In second instance, I synthetized new Cycloparaphenylenes (CPP) derivatives to molecular recognition and optoelectronic application. Particularly about molecular recognition field, I reported the synthesis of a [8]CPP derivative incorporating an electron-rich 1,4-dimethoxybenzene ring. This is the first example of substituted CPP derivative reported in literature able to recognize pyridinium guests. Owing to the presence of the 1,4-dimethoxybenzene ring a fine-tuning of the binding abilities toward pyridinium guests was obtained with respect to the native [8]CPP macrocycle. Hybrid Calixarene-CPP derivative that combine the supramolecular features of both the hosts was synthetized and studied in molecular recognition of Na+, Li+ and K+. This derivative shows a noncommon Li+ selectivity due to a more favorable interaction between the cation and the aromatic rings of the CPP bridge. Synthesis of incorporate the 9,10-diphenyl anthracene - [8]CPP derivative was performed and were studied optical and electronical features to obtain the first example of a CPP-based emitter in photon upconversion in the presence of the of octaethylporphyrin Pd(II) complex as a sensitizer, thus widening the application fields of this class of compounds. Finally, [8]CPP and [10]CPP was tested to produce Luminescent Solar Concentrators (LSCs). The high Stokes shift of the CPP macrocycles, enables the preparation of slabs in which a low reabsorption was observed. The results here obtained show clearly the photophysical performances of the CPPbased LSC closely matches with that of the lanthanide chelates based LSC, of interest for applications in colorless LSC. [edited by Author]XXXI cicl