Search results for "Frame"
showing 10 items of 1767 documents
@DMOs Promote Hotel Occupancy in Tourist Destinations: An Abstract
2017
Destination marketing organizations (DMOs) are aware of Twitter’s relevance, and they have now integrated Twitter into their own websites (Luna-Nevarez and Hyman 2012). Because of their growing practical importance, social media have become strong allies for tourism destinations. Social media are used by both tourists and providers (Leung et al. 2013), so research is needed to show social media’s direct contribution to the tourism sector. To improve our knowledge of the effect of social media in tourism, this study examines how DMOs’ use of Twitter affects hotel occupancy in tourist destinations. Our conceptual framework presents a model of the links between predictors of tourist occupancy …
A qualidade do intercâmbio líder-membro (LMX) e o clima psicológico: Uma análise longitudinal das suas relações recíprocas
2014
Although the relationship between climate and leadership has been taken into account from different research and theoretical approaches, there is a lack of effort in the development of conceptual framework to understand the relationship between the development processes in both constructs. Grounding on the interactionist approach to the formation of climate and the Leader Member Exchange in leadership, Kozlowski and Doherty (1989) developed a conceptual framework that specifies the theoretical mechanisms linking both constructs. The lack of longitudinal designs hinders the possibility to test causal relationship between both constructs. The main objective of the present paper was to test a …
Innovation capabilities: What are their characteristics and how can they be conceptualized?
2017
Purpose – It has been argued that firms may utilize their resources and capabilities through the development of innovations in the form of new products, services or processes, and empirical research has confirmed that there is a positive relationship between the implementation of innovation activities and future performance of firms. Some firms prove to be better at reproducing innovation success than other firms, and the capacity to do so can be framed as an innovation capability. However, the term innovation capability is ambiguously treated in extant literature. There exist several different definitions of the concept and the distinction between innovation capabilities and other types of…
An algebra for the manipulation of conceptual spaces in cognitive agents
2013
According to Gärdenfors, the theory of conceptual spaces describes a level of representation present in some cognitive agents between a sub-conceptual and a symbolic level of representation. In contrast to a large part of contemporary philosophical speculation on these matters for which concepts and conceptual content are propositional, conceptual spaces provide a geometric framework for the representation of concepts. In this paper we introduce an algebra for the manipulation of different conceptual spaces in order to formalise the process whereby an artificial agent rearranges its internal conceptual representations as a consequence of its perceptions, which are here rendered in terms of …
Seismic Performance of Earthquake-Resilient RC Frames Made with HSTC Beams and Friction Damper Devices
2021
Seismic behavior of RC frames with hybrid steel-trussed concrete beams is affected by panel zone damage due to a large amount of longitudinal reinforcement. Here the seismic efficiency of innovative frames characterized by friction damper devices (FDDs) at beam-to-column connections is compared against traditional frame. Three configurations are investigated: FDDs alone; FDDs with column-to-foundation connections having preloaded threaded bars and disk springs; FDDs with self-centering friction devices. Non-linear analyses show that FDDs alone prevent plastic hinge formation at beam ends and beam–column joint damage. FDDs with self-centering friction devices effectively limit both peak and …
Automated detection of patient movement during a CBCT scan based on the projection data.
2015
Objectives To develop an automated procedure to detect patient motion on the projection images acquired during a cone beam computed tomography (CBCT) scan and to evaluate the method's feasibility on small real-world CBCT images in relation to visual assessment. Methods Based on optical flow theory, software was developed using the sequence of the projection images of a CBCT machine for automated detection of patient motion. Averaged acceleration vectors were used as measurement data and compared with visual assessment of the projection images displayed as video. Seventy-nine CBCT data sets (small field-of-view: 40 mm) from our patient database were selected in a sequential fashion and evalu…
Elementary Newtonian Mechanics
2010
This chapter deals with the kinematics and the dynamics of a finite number of mass points that are subject to internal, and possibly external, forces, but whose motions are not further constrained by additional conditions on the coordinates. Constraints such as requiring some mass points to follow given curves in space, to keep their relative distance fixed, or the like, are introduced in Chap. 2. Unconstrained mechanical systems can be studied directly by means of Newton’s equations and do not require the introduction of new, generalized coordinates that incorporate the constraints and are dynamically independent. This is what is meant by “elementary” in the heading of this chapter — thoug…
Economic valuation of environmental benefits from wastewater treatment processes: An empirical approach for Spain
2009
Economic research into the design and implementation of policies for the efficient management of water resources has been emphasized by the European Water Framework Directive (Directive 2000/60/EC). The efficient implementation of policies to prevent the degradation and depletion of water resources requires determining their value in social and economic terms and incorporating this information into the decision-making process. A process of wastewater treatment has many associated environmental benefits. However, these benefits are often not calculated because they are not set by the market, due to inadequate property rights, the presence of externalities, and the lack of perfect information…
Argumentation graphs with constraint-based reasoning for collaborative expertise
2018
International audience; Collaborative processes are very important in telemedicine domain since they allow for making right decisions in complex situations with multidisciplinary staff. When modelling these collaborative processes, some inconsistencies can appear. In semantic modelling (conceptual graphs), these inconsistencies are verified using constraints. In this work, collaborative processes are represented using an argumentation system modelled in a conceptual graph formalism where inconsistencies could be particular bad attack relation between arguments. To overcome these inconsistencies, two solutions are proposed. The first one is to weight the arguments evolving in the argumentati…
Sémantique discursive cognitive.
2022
Langue et connaissances sont dans la recherche actuelle travaillées sous l’angle du discours. Son étude linguistique permet d’identifier des figements en tant qu’expressions de routines sociales et cognitives. Cette approche exploite deux outils : les constructions en tant qu’appariements de sens et de forme, et les frames en tant qu’unités minimales de connaissances partagées. Il convient alors de construire théoriquement cette association, encore inédite en analyse du discours. Un protocole méthodologique de linguistique du corpus opérationnalise l’approche développée. Puis, une analyse empirique d’un corpus de publicités du vin issues de prospectus de supermarchés autrichiens permet de v…