Search results for "RTAI"
showing 10 items of 1960 documents
Between context and comparability: Exploring new solutions for a familiar methodological challenge in qualitative comparative research
2020
Finding the balance between adequately describing the uniqueness of the context of studied phenomena and maintaining sufficient common ground for comparability and analytical generalisation has widely been recognised as a key challenge in international comparative research. Methodological reflections on how to adequately cover context and comparability have extensively been discussed for quantitative survey or secondary data research. In addition, most recently, promising methodological considerations for qualitative comparative research have been suggested in comparative fields related to higher education. The article’s aim is to connect this discussion to comparative higher education rese…
Evolution of a Quantum System: Lifetime of a Determinant
1976
A measure of the ''dependency'' of a many-particle system is defined and its time dependence is evaluated for systems initially described by a single Slater determinant. An uncertainty product between the energy spread of the initial determinant and the lifetime of a system's independence is established. Numerical estimates of some lifetimes are given. They are not so long as to be reassuring for nuclear time-dependent Hartree--Fock calculations. Each separate case ought to be checked. 1 table.
Les followers ont-ils vraiment de l'importance dans le modèle de Stackelberg?
2011
In this paper, we consider a T-stage linear model of Stackelberg oligopoly. First, we show geometrically and analytically that under the two conditions of linear market demand and identical constant marginal costs, the T-stage Stackelberg model reduces to a model where T oligopolies exploit residual demand sequentially. At any stage, leaders behave as if followers did not matter. Second, we study social welfare and convergence toward competitive equilibrium. Especially, we consider the velocity of convergence as the number of firms increases. The convergence is faster when reallocating firms from the most to the less populated cohort until equalizing the size of all cohorts.
Minimising value-at-risk in a portfolio optimisation problem using a multi-objective genetic algorithm
2011
[EN] In this paper, we develop a general framework for market risk optimisation that focuses on VaR. The reason for this choice is the complexity and problems associated with risk return optimisation (non-convex and non-differential objective function). Our purpose is to obtain VaR efficient frontiers using a multi-objective genetic algorithm (GA) and to show the potential utility of the algorithm to obtain efficient portfolios when the risk measure does not allow calculating an optimal solution. Furthermore, we measure differences between VaR efficient frontiers and variance efficient frontiers in VaR-return space and we evaluate out-sample capacity of portfolios on both bullish and bearis…
Museoparks and re‐enchantment of the museum visits: an approach centred on visual ethnology
2012
PurposeThe purpose of this paper is to identify the structural dimensions of a new museal offer, museoparks, which use edutainment and more generally re‐enchantment strategies.Design/methodology/approachTo bring out the symbolic dimensions specific to these cultural sites, the methodology used is based on the analysis of photographic media.FindingsThe analysis reveals four main symbolic dimensions structuring these hybrid cultural offers: spectacularization, immersive character, ritualized character, and very intense merchandizing of the experience.Research limitations/implicationsThis analysis allows us to update a hybrid, complex and re‐sized form of cultural experience that goes beyond t…
Key factors of teenagers' mobile advertising acceptance
2013
PurposeThe purpose of this paper is to analyse key drivers of teenagers' attitude toward mobile advertising and its effects on teenagers' mobile advertising acceptance.Design/methodology/approachA proposed model of affective (irritation and entertainment) and cognitive (perceived usefulness) antecedents of attitude toward mobile advertising and its effects on mobile advertising acceptance is analysed. The sample consisted of 355 Spanish teenagers. The model was tested using structural equation modelling.FindingsFindings show that entertainment, irritation and usefulness are key drivers of teenagers' attitude toward mobile advertising. Moreover, perceived usefulness reduces irritation. The a…
Statistical formats to optimize evidence-based decision making: A behavioral approach
2013
Abstract Statistical information is crucial for managerial decision making. The decision-making literature in psychology and mathematical cognition documents how different statistical formats can facilitate certain types of decisions. The present analysis is the first of its kind to assess the impact of statistical formats in the presentation of data from market research on both the optimality of market decisions and the time required to perform the decision-making process. An economic experiment provides the data for this study. The experiment presents statistical information in simple frequencies and relative frequencies using numerical and pictorial representations in the context of diff…
Branded Entertainment
2017
Branded entertainment is the insertion of a brand within an entertainment property in such a way that the line between entertainment and advertising becomes blurred (Moore, 2006). This hybrid message develops in an increasingly convergent environment in which editorial content and advertising content are blended (Shrum, 2004). This indirect approach to deliver brand messages is gaining momentum as a marketing communications tool to engage consumers with brand messages in a non-interruptive and entertainment context. By using branded films, advergames, and other advertainment-type genres, advertisers aim to enhance consumers´ brand perceptions, brand awareness, brand recall, and brand recogn…
Influence of Time Pressure on the Outcome of Intercultural Commercial Negotiations
2016
ABSTRACTIt is essential, in commercial negotiations, to know how time pressure is expressed among customers and suppliers and which its effect on the outcomes of negotiation is. Must pressure be applied or not? In order to solve this question, 21 customer/supplier negotiation case studies were carried out (intercultural and intracultural). We have evidenced that an adequate time pressure, at low levels, produced outcomes that tend to be positive. Also, the national culture of the negotiators may influence the decision about using or not time pressure in these processes; especially when considering In-Group Collectivism and Uncertainty Avoidance dimensions.
Analyzing the Impact of Culture on Average Time Spent on Social Networking Sites
2014
The study examines the influence of national culture on national averages of time spent (ATS) visiting the largest social networking sites (SNSs): Facebook, Twitter, and LinkedIn. The analysis uses cultural dimensions adopted from both the works of Hofstede and Schwartz, while controlling for country e-readiness and median population age. The findings suggest that culture's influence may be moderated by the media richness and type of network focus of each SNS. Overall, in rich-media SNSs, egalitarianism positively impacts ATS. Individualism and masculinity only impact ATS on friendship-oriented SNSs. Additionally, uncertainty avoidance and intellectual autonomy only impact ATS on profession…