A Drift-Kinetic Analytical Model for SOL Plasma Dynamics at Arbitrary Collisionality

A drift-kinetic model to describe the plasma dynamics in the scrape-off layer region of tokamak devices at arbitrary collisionality is derived. Our formulation is based on a gyroaveraged Lagrangian description of the charged particle motion, and the corresponding drift-kinetic Boltzmann equation that includes a full Coulomb collision operator. Using a Hermite-Laguerre velocity space decomposition of the gyroaveraged distribution function, a set of equations to evolve the coefficients of the expansion is presented. By evaluating explicitly the moments of the Coulomb collision operator, distribution functions arbitrarily far from equilibrium can be studied at arbitrary collisionalities. A fluid closure in the high-collisionality limit is presented, and the corresponding fluid equations are compared with previously-derived fluid models

Consequences of being deeply in love: The fan-football club relationship

The aim of this research is to explore the consequences of being in love and committed to a football (soccer) club and a team for the fans. Data was collected through 28 in-depth interviews. In the qualitative data collection for this work first we realize 97 telephone interviews and then we made 28 in-depth interviews. In this paper we present the findings of the 28 in-depth interviews concerning the consequences of being deeply in love with the football club. Respondents were between 22 and 70 years of age and engaged in a range of different jobs and functions. The interviews were recorded and transcribed and the NVIVO software was employed to help in content data analysis. The findings reveal six major themes: personal, financial, family, life planning, job and friends.info:eu-repo/semantics/acceptedVersio

Magnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas

A numerical study of magnetic reconnection in the large-Lundquist-number ($S$), plasmoid-dominated regime is carried out for $S$ up to $10^7$. The theoretical model of Uzdensky {\it et al.} [Phys. Rev. Lett. {\bf 105}, 235002 (2010)] is confirmed and partially amended. The normalized reconnection rate is \normEeff\sim 0.02 independently of $S$ for $S\gg10^4$. The plasmoid flux ($\Psi$) and half-width ($w_x$) distribution functions scale as $f(\Psi)\sim \Psi^{-2}$ and $f(w_x)\sim w_x^{-2}$. The joint distribution of $\Psi$ and $w_x$ shows that plasmoids populate a triangular region $w_x\gtrsim\Psi/B_0$, where $B_0$ is the reconnecting field. It is argued that this feature is due to plasmoid coalescence. Macroscopic "monster" plasmoids with $w_x\sim 10$% of the system size are shown to emerge in just a few Alfv\'en times, independently of $S$, suggesting that large disruptive events are an inevitable feature of large-$S$ reconnection.Comment: 5 pages, 6 figures, submitted for publicatio

I want that smartphone! sources of brand equity

This research aims (i) to explore the influence of an individual’s attitude towards advertising, brand origin and country of manufacture on brand equity creation; and (ii) to analyse brand typicality as moderating the effect of brand origin macro image on perceived quality. A conceptual model is proposed and applied to a sample of 305 Portuguese consumers of Smartphones. The proposed model was tested considering Apple, Nokia and Samsung. The results show that individuals' attitudes towards advertisements has a positive impact on brand equity creation, whereas country of manufacture does not influence significantly and brand origin has only a partial influence. Brand typicality exerts a significant direct effect on brand equity dimensions but does not have a significant moderating effect.info:eu-repo/semantics/acceptedVersio

Create, build and manage online brands for internet companies

Research Aims The primary objective of this ongoing research is to identify the main assets that create brand success for internet-only companies. Based on an extensive and systematic literature review, this study seeks to identify the constructs who drive online brands for a successful life. Eighteen articles were identified and from those some preliminary reflections were taken.info:eu-repo/semantics/submittedVersio

Effect of current corrugations on the stability of the tearing mode

The generation of zonal magnetic fields in laboratory fusion plasmas is predicted by theoretical and numerical models and was recently observed experimentally. It is shown that the modification of the current density gradient associated with such corrugations can significantly affect the stability of the tearing mode. A simple scaling law is derived that predicts the impact of small stationary current corrugations on the stability parameter $\Delta'$. The described destabilization mechanism can provide an explanation for the trigger of the Neoclassical Tearing Mode (NTM) in plasmas without significant MHD activity.Comment: Accepted to Physics of Plasma

Football brand managers perspectives how to deal with fans emotions

Football brand managers are part of the sport industry. With structured in-depth personal interviews to seven of the top half Portuguese football clubs, our aim is to have a deeper knowledge about the professional perspective, strategies and actions to attract fans and maintain their relationship with the club (i.e. brand). Negativity effect, fan identity, and memory are the three major themes that emerged and also discussed in the light of known literature.info:eu-repo/semantics/publishedVersio

Tratamento Endovascular da Disseção Crónica Isolada da Aorta Abdominal

Isolated acute abdominal aortic dissection is a relatively rare event. Its natural history is not fully understood and its optimal treatment is not established. Open surgery represents the most described treatment but endovascular intervention has had increasing application. Isolated chronic abdominal aortic dissection is even less described in the literature. We describe three patients with isolated chronic abdominal aortic dissection who underwent endovascular treatment in our institution. Mean age at presentation was 82 years. Indication for surgical intervention was aneurismal degeneration. Mean aortic diameter at presentation was 46.7 mm. There was no perioperative mortality or reinterventions. Mean follow-up was 5.3 years (2-12 years). Late reintervention was needed in one patient, eight years after initial surgery, due to type 1 endoleak. According to our experience, endovascular intervention represents an effective and durable treatment option in isolated chronic abdominal aortic dissection. However, long-term follow-up is mandatory. Furthermore, larger studies are still needed to understand this disease and its adequate treatment.info:eu-repo/semantics/publishedVersio

How can stimuli and emotions help increase brand advocacy

The current study aims to explore if Information/Content, Interactive Features, and Design-Visual appeal influences consumers emotional states of Pleasure, Arousal, and Dominance (PDA), leading to brand advocacy as an outcome. Therefore, our goal is to understand which stimuli of experience exercises more effect on the three emotional states (PDA) and which of these three better influence Brand Advocacy. Data from 183 users of CGM were analysed through structural equation modelling (SmarthPLS2.0) and the findings show that all the aforementioned stimuli influence online PDA. Findings also suggest that all PDA dimensions influence Brand Advocacy.info:eu-repo/semantics/acceptedVersio