- LA COMPRA IMPULSIVA Y LA COMPRA PATOLÓGICA: EL MODELO CAC#

In recent years there is a new trend researching impulsive and compulsive buying in consumption. Although there has been literature from 1940, this topic has been continuously misunderstood by the scientifics, mainly because their applied and business perspective. It is our effort to understand and formulate a new model, the structural and functional model CAC (Affective and Cognitive Buying) where we try to overcome the general assumptions drew by the consumer involvement conceptualization. Moreover, this model supposes an introduction to the emotional face of consumers coherently with new approaches that grow in consumer literature. En los últimos años ha aparecido una nueva tendencia de investigación relacionada con la compra compulsiva y la compra impulsiva. Aunque existe literatura desde los años 40, este tema ha sido continuamente entendido desde una perspectiva empresarial y aplicada que ha dificultado su estudio. En este trabajo pretendemos comprender y formular un nuevo modelo de consumo, el modelo CAC (Compra Afectivo-Cognitiva) donde intentamos superar las líneas generales que plantea la conceptualización de la implicación del consumidor. Más aún, este modelo supone una introducción a la cara emocional de los consumidores de modo coherente con las nuevas tendencias que están surgiendo en la literatura del consumidor.Compra impulsiva, compra compulsiva, compra adictiva, compra patológica. Impulse buying, compulsive buying, addictive buying, pathological buying.

TIC y cocreación de valor en B2B: la nueva forma de fidelización en el servicio

[EN] In today’s competitive environment, it is emphasised that business digitalisation is one of the most important strategies to deal with new market challenges. This article argues that technology is a driving force behind business relationships, showing the origins of new ways to achieve loyalty. Through a model which has been tested in a sample of 256 travel agencies, technology can facilitate coordination in the management of relationships between tourism companies, promoting value co-creation between suppliers and customers. Co-creation in turn maximises trust and commitment between organisations and lays the foundations for achievement of dual social and economic satisfaction, for client companies, which ultimately enhances their loyalty. This research contributes to the literature in the interorganizational context, showing quantitative evidence on how technology triggers a sequence of effects that, through value co-creation, trust, and commitment in the channel, between agents in the tourism field, trace a new route of relationships that leads to the achievement of dual satisfaction and loyalty. Additionally, the interrelationships between the two satisfactions are analysed, concluding the mediating effect of economic satisfaction between social satisfaction and loyalty.[ES] En el entorno competitivo actual, se insiste en que la digitalización empresarial es una de las estrategias más im-portantes para hacer frente a los nuevos retos del mercado. En este artículo se argumenta que la tecnología es una fuerza impulsora de las relaciones comerciales, que muestra el origen de nuevos caminos hacia la consecución de la lealtad. A través de un modelo que ha sido probado en una muestra de 256 agencias de viajes, la tecnología puede facilitar la coordinación en la gestión de las relaciones entre las empresas turísticas, promoviendo la co-creación de valor entre proveedores y clientes. A su vez, la co-creación maximiza la confianza y el compromiso entre las organizaciones y sienta las bases para la consecución de una doble satisfacción social y económica, para las empresas clientes, lo que en última instancia aumenta su lealtad. Esta investigación contribuye a la literatura en el contexto interorganizacional, mostrando evidencias cuantitativas sobre cómo la tecnología desencadena una secuencia de efectos que, a través de la co-creación de valor, la confianza y el compromiso en el canal, entre agentes del ámbito turístico, traza una nueva ruta de relaciones que conduce a la consecución de la doble satisfacción y lealtad. Además, se analizan las interrelaciones entre ambas satisfacciones, concluyendo el efecto mediador de la satisfacción económica entre la satisfacción social y la lealtad.This research has been developed within the framework of the project grant PID2020-112660RB-I00 funded by MCIN/AEI/10.13039/501100011033 and the grant for consolidated re-search group AICO/2021/144 funded by the Conselleria d’Inno-vació, Universitats, Ciència i Societat Digital of the Generalitat Valenciana

Measurement of Branching Fractions and Rate Asymmetries in the Rare Decays B -> K(*) l+ l-

In a sample of 471 million BB events collected with the BABAR detector at the PEP-II e+e- collider we study the rare decays B -> K(*) l+ l-, where l+ l- is either e+e- or mu+mu-. We report results on partial branching fractions and isospin asymmetries in seven bins of di-lepton mass-squared. We further present CP and lepton-flavor asymmetries for di-lepton masses below and above the J/psi resonance. We find no evidence for CP or lepton-flavor violation. The partial branching fractions and isospin asymmetries are consistent with the Standard Model predictions and with results from other experiments.Comment: 16 pages, 14 figures, accepted by Phys. Rev.

Measurement of CP Asymmetries and Branching Fractions in Charmless Two-Body B-Meson Decays to Pions and Kaons

We present improved measurements of CP-violation parameters in the decays $B^0 \to \pi^+ \pi^-$, $B^0 \to K^+ \pi^-$, and $B^0 \to \pi^0 \pi^0$, and of the branching fractions for $B^0 \to \pi^0 \pi^0$ and $B^0 \to K^0 \pi^0$. The results are obtained with the full data set collected at the $\Upsilon(4S)$ resonance by the BABAR experiment at the PEP-II asymmetric-energy $B$ factory at the SLAC National Accelerator Laboratory, corresponding to $467 \pm 5$ million $B\bar B$ pairs. We find the CP-violation parameter values and branching fractions $S_{\pi^+\pi^-} = -0.68 \pm 0.10 \pm 0.03, C_{\pi^+\pi^-} = -0.25 \pm 0.08 \pm 0.02, A_{K^-\pi^+} = -0.107 \pm 0.016 ^{+0.006}_{-0.004}, C_{\pi^0\pi^0} = -0.43 \pm 0.26 \pm 0.05, Br(B^0 \to \pi^0 \pi^0) = (1.83 \pm 0.21 \pm 0.13) \times 10^{-6}, Br(B^0 \to K^0 \pi^0) = (10.1 \pm 0.6 \pm 0.4) \times 10^{-6},$ where in each case, the first uncertainties are statistical and the second are systematic. We observe CP violation with a significance of 6.7 standard deviations for $B^0 \to\pi^+\pi^-$ and 6.1 standard deviations for $B^0 \to K^+ \pi^-$, including systematic uncertainties. Constraints on the Unitarity Triangle angle $\alpha$ are determined from the isospin relations among the $B \to \pi\pi$ rates and asymmetries. Considering only the solution preferred by the Standard Model, we find $\alpha$ to be in the range $[71^\circ,109^\circ]$ at the 68% confidence level.Comment: 18 pages, 11 postscript figures, submitted to Phys. Rev.

Measurement of the Tau Lepton Polarisation at LEP2

A first measurement of the average polarisation P_tau of tau leptons produced in e+e- annihilation at energies significantly above the Z resonance is presented. The polarisation is determined from the kinematic spectra of tau hadronic decays. The measured value P_tau = -0.164 +/- 0.125 is consistent with the Standard Model prediction for the mean LEP energy of 197 GeV.A first measurement of the average polarisation Pτ of tau leptons produced in e + e − annihilation at energies significantly above the Z resonance is presented. The polarisation is determined from the kinematic spectra of tau hadronic decays. The measured value Pτ=−0.164±0.125 is consistent with the Standard Model prediction for the mean LEP energy of 197 GeV.A first measurement of the average polarisation P_tau of tau leptons produced in e+e- annihilation at energies significantly above the Z resonance is presented. The polarisation is determined from the kinematic spectra of tau hadronic decays. The measured value P_tau = -0.164 +/- 0.125 is consistent with the Standard Model prediction for the mean LEP energy of 197 GeV

A Precision Measurement of the Lambda_c Baryon Mass

The $\Lambda_c^+$ baryon mass is measured using $\Lambda_c^+\to\Lambda K^0_S K^+$ and $\Lambda_c^+\to\Sigma^0 K^0_S K^+$ decays reconstructed in 232 fb$^{-1}$ of data collected with the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$ storage ring. The $\Lambda_c^+$ mass is measured to be $2286.46\pm0.14\mathrm{MeV}/c^2$. The dominant systematic uncertainties arise from the amount of material in the tracking volume and from the magnetic field strength.Comment: 14 pages, 8 postscript figures, submitted to Phys. Rev.

Identification of the intermediate hosts of Habronema microstoma and Habronema muscae under field conditions

A polymerase chain reaction (PCR)-based assay was used for the specific detection of Habronema microstoma and Habronema muscae (Nematoda, Spirurida) in order to identify the intermediate hosts of both nematode species under field conditions. A total of 1087 netted and 165 laboratory-bred flies were tested. Flies were identified as Musca domestica Linnaeus 1758, Musca autumnalis De Geer 1776, Haematobia irritans (Linnaeus 1758), Haematobia titillans (De Geer 1907) and Stomoxys calcitrans (Linnaeus 1758) (Muscidae). Genomic DNA was extracted from pools of fly heads, thoraces and abdomens, and 703 samples were subjected to a duplex two-step semi-nested PCR assay to specifically detect diagnostic regions within the ribosomal ITS2 sequence of both H. microstoma and H. muscae. Stomoxys calcitrans specimens were positive for H. microstoma DNA and M. domestica specimens were positive for H. muscae DNA. In particular, PCR-positive samples derived from both farm-netted and laboratory-bred flies. The present study represents the first evidence of the vectorial competence of different fly species as intermediate hosts of Habronema stomachworms under field conditions. We discuss the roles of S. calcitrans and M. domestica in transmitting H. microstoma and H. muscae

Up-regulation of the canonical Wnt-3A and Sonic hedgehog signaling underlies melanocortin-induced neurogenesis after cerebral ischemia

In experimental cerebral ischemia, melanocortin MC4 receptor agonists induce neuroprotection and neurogenesis with subsequent long-lasting functional recovery. Here we investigated the molecular mechanisms underlying melanocortin-induced neurogenesis. Gerbils were subjected to transient global cerebral ischemia, then they were treated every 12 h, and until sacrifice, with 5-bromo-2'-deoxyuridine (BrdU; to label proliferating cells), and the melanocortin analog [Nle(4),D-Phe(7)]alpha-melanocyte-stimulating hormone (NDP-alpha-MSH) or saline. NDP-alpha-MSH increased hippocampus dentate gyrus (DG) expression of Wnt-3A, beta-catenin, Sonic hedgehog (Shh), Zif268, interleukin-10 (IL-10) and doublecortin (DCX), as detected at days 3, 6 and 10 after the ischemic insult. Further, an elevated number of BrdU immunoreactive cells was found at days 3 and 10, and an improved histological picture with reduced neuronal loss at day 10, associated with learning and memory recovery. Pharmacological blockade of the Wnt-3A/beta-catenin and Shh pathways, as well as of melanocortin MC4 receptors, prevented all effects of NDP-alpha-MSH. These data indicate that, in experimental brain ischemia, treatment with melanocortins acting at MC4 receptors induces neural stem/progenitor cell proliferation in the DG by promptly and effectively triggering the canonical Wnt-3A/beta-catenin and Shh signaling pathways. Activation of these pathways is associated with up-regulation of the repair factor Zif268 and the neurogenesis facilitating factor IL-10, and it seems to address mainly toward a neuronal fate, as indicated by the increase in DCX positive cells

Up-regulation of the canonical Wnt-3A and Sonic hedgehog signaling underlies melanocortin-induced neurogenesis after cerebral ischemia

In experimental cerebral ischemia, melanocortin MC4 receptor agonists induce neuroprotection and neurogenesis with subsequent long-lasting functional recovery. Here we investigated the molecular mechanisms underlying melanocortin-induced neurogenesis. Gerbils were subjected to transient global cerebral ischemia, then they were treated every 12 h, and until sacrifice, with 5-bromo-2’-deoxyuridine (BrdU; to label proliferating cells), and the melanocortin analog [Nle4,D-Phe7]-melanocyte-stimulating hormone (NDP--MSH) or saline. NDP--MSH increased hippocampus dentate gyrus (DG) expression of Wnt-3A, -catenin, Sonic hedgehog (Shh), Zif268, interleukin-10 (IL-10) and doublecortin (DCX), as detected at days 3, 6 and 10 after the ischemic insult. Further, an elevated number of BrdU immunoreactive cells was found at days 3 and 10, and an improved histological picture with reduced neuronal loss at day 10, associated with learning and memory recovery. Pharmacological blockade of the Wnt-3A/-catenin and Shh pathways, as well as of melanocortin MC4 receptors, prevented all effects of NDP--MSH. These data indicate that, in experimental brain ischemia, treatment with melanocortins acting at MC4 receptors induces neural stem/progenitor cell proliferation in the DG by promptly and effectively triggering the canonical Wnt-3A/-catenin and Shh signaling pathways. Activation of these pathways is associated with upregulation of the repair factor Zif268 and the neurogenesis facilitating factor IL-10, and it seems to address mainly towards a neuronal fate, as indicated by the increase in DCX positive cells

Relationship between out-of-hospital cardiac arrests and COVID-19 during the first and second pandemic wave. The importance of monitoring COVID-19 incidence

Background: The relationship between COVID-19 and out-of-hospital cardiac arrests (OHCAs) has been shown during different phases of the first pandemic wave, but little is known about how to predict where cardiac arrests will increase in case of a third peak. Aim: To seek for a correlation between the OHCAs and COVID-19 daily incidence both during the two pandemic waves at a provincial level. Methods: We considered all the OHCAs occurred in the provinces of Pavia, Lodi, Cremona, Mantua and Varese, in Lombardy Region (Italy), from 21/02/2020 to 31/12/2020. We divided the study period into period 1, the first 157 days after the outbreak and including the first pandemic wave and period 2, the second 158 days including the second pandemic wave. We calculated the cumulative and daily incidence of OHCA and COVID-19 for the whole territory and for each province for both periods. Results: A significant correlation between the daily incidence of COVID-19 and the daily incidence of OHCAs was observed both during the first and the second pandemic period in the whole territory (R = 0.4, p<0.001 for period 1 and 2) and only in those provinces with higher COVID-19 cumulative incidence (period 1: Cremona R = 0.3, p = 0.001; Lodi R = 0.4, p<0.001; Pavia R = 0.3; p = 0.01; period 2: Varese R = 0.4, p<0.001). Conclusions: Our results suggest that strictly monitoring the pandemic trend may help in predict which territories will be more likely to experience an OHCAs' increase. That may also serve as a guide to re-allocate properly health resources in case of further pandemic waves