Search results for "RCA"
showing 10 items of 3171 documents
Links and Bifurcations in Nonsingular Morse–Smale Systems
1997
Wada's theorem classifies the set of periodic orbits in NMS systems on S3 as links, that can be written in terms of six operations. This characterization allows us to study the topological restrictions that links require to suffer a given codimension one bifurcation. Moreover, these results are reproduced in the case of NMS systems with rotational symmetries, introducing new geometrical tools.
Fiat lux: the light became therapy. An overview on the Bright Light Therapy in Alzheimer’s Disease sleep disorders
2020
Background: A system of photosensitive retinal ganglion cells provides ‘non-visual’ information on the circadian sequences of light to the suprachiasmatic nucleus (SCN), which, as the ‘master clock’, synchronizes the chronobiological mechanisms of all the biological clocks. Damage to SCN structure alters circadian behavioral and hormonal rhythms and interferes with a regular sleep-wake pattern. Several studies have shown that, in aging and in Alzheimer’s disease (AD), circadian rhythms change their synchronization with the environment and behavior loses sync with light. Objective: The current overview aims to examine research studies showing the effect of bright light therapy (BLT) on sleep…
La sobirania feminista en l'època del neoliberalisme
2019
El feminisme sempre ha estat un moviment rupturista i revolucionari i s’ha convertit els darrers anys, a l’àmbit local i mundial, en un important mur de contenció de les polítiques regressives, autoritàries i destructores, impulsades pel neoliberalisme i les seues derivades xenòfobes, racistes, teocràtiques i patriarcals. Alhora ha sigut i és un poderós moviment d’apoderament de les dones i amb elles els sectors socials més avançats. I ho ha fet basant-se més en valors que en estructures organitzatives.
L’avvio della ricerca empirica in campo educativo in Italia: il contributo di Calonghi e Visalberghi
2014
Mentre la filosofia dominante in Italia alla fine della seconda guerra mondiale non era favorevole alla sperimentazione pedagogica, alcune iniziative, tese a innovare in senso attivistico i contenuti e i metodi dell’insegnamento scolastico, costituirono le cause remote dell’avvio dello studio dell’educazione con il metodo positivo. Esse facilitarono l’azione dei pionieri della ricerca empirica in campo educativo, che si sviluppò in Italia a partire dagli anni cinquanta del XX secolo per tre cause prossime: l’influsso delle sperimentazioni realizzate nelle scuole degli USA, la diffusione del pensiero di Dewey, l’impulso dato dall’Istituto Superiore di Pedagogia dei Salesiani allo studio dell…
The Institutionalization of Political Risk Assessment by Chinese Multinational Firms
2021
Some researchers have claimed that Chinese firms are impervious to political risk, calling into question the institutionalization of political risk by Chinese firms. Building on resource dependence theory and the literature on non-market strategies, this study finds significant impact by ownership structure, firm scale, and the degree of internationalization on the institutionalization of political risk assessments (IPRA) by Chinese firms. As such, state-owned firms and larger firms cultivate a higher level of IPRA. We find a positive impact of a firm’s scale and scope of internationalization, but insignificant impact of depth of internationalization.
Global Spaces for Local Politics: An Exploratory Analysis of Facebook Ads in Spanish Election Campaigns
2021
[EN] Sponsored content on Facebook has become an indispensable tool for implementing political campaign strategies. However, in political communication research, this channel is still unexplored due to its advertising model in which only target audiences are exposed to sponsored content. The launching of the Facebook Ad Library in May 2018 can be considered a turning point in this regard, inasmuch as it now offers users direct access to ads paid for by political parties, among other advertisers. This paper analyzes some aspects of the strategies implemented by six national parties during the campaigns running up to the two general elections held in Spain in 2019, by performing an analysis o…
Customer Loyalty in Clusters: Perceived Value and Satisfaction as Antecedents
2009
Purpose: This paper studies, from the perspective of relationship marketing, the loyalty behavior of industrial customers in the context of a cluster. Loyalty is a key variable for studying long term relationships between firms. Research implications: Recent advances in consumer and services marketing consider that perceived value and satisfaction are central to explaining customer loyalty. However, very few studies in B2B explain the antecedents of customer loyalty. This study adopts the relationship marketing approach, and loyalty behavior is being analyzed in a specific setting: an industrial cluster. Furthermore, the effect of the number of suppliers is analyzed as a possible moderator …