Brand consistency and coherency at the London 2012 Olympic Games As brand management and brand perceptions attract more attention in both academia and in practice, examining the link or lack thereof between brand identity and image is becoming increasingly important. The existence of brand consistency and coherency is examined in this research, which aimed to evaluate whether the pre-or post-event brand image of the Olympic Games or the London 2012 Games, in the domestic UK population and media, were aligned with the brand identities of these objects. Online surveys and media content analysis revealed that both brands have yet to achieve consistency or coherency within these two key stakeholder groups, even though the brand image of the 2012 Games improved following the event. What this study suggests is that unless the brand owner takes key stakeholders' perceptions into consideration, a coherent and consistent brand identity does not necessarily equate to these being a feature of the brand image, with the connection between perceptions requiring additional attention.

Contemporarily, the hosting of mega-sport-events (MSEs) is one of several strategies used by cities and governments to bring about improvements in a place's image and recognition. With that in mind, the overall aim of this study, underpinned by theoretical-methodological social representation theory, was to evaluate the domestic image impact of hosting the 2012 Summer Olympic Games for the city of London, and in doing so, whether any image-transfer (or cobranding) processes occurred between the place and event. In addition to adding to the emergent body of work aimed at using social representation theory to measure place image, the authors are among the first to employ a matched-sample research approach to measuring the impact of an MSE on the domestic perceptions of the host. Employing an abductive research strategy, a survey was carried out among the domestic English population (n=156) to identify cognitive and affective image components, in the form of social representations, of London as a city (or its place brand), the Olympics as a MSE, and the 2012 Games as a oneoff event. The content and the structure of the pre-and post-event social representations were established (using image elements cited by at least 15% of the respondents), analysed (using hierarchical cluster analysis) and then compared (within-and between items) to determine whether any changes or image transfer occurred. The findings of this research reveal that the pre-event concerns regarding the hosting of the London 2012 Olympics and the potential of the event to negatively impact the city's pre-established image, were, to a degree, fulfilled. Conversely, from an event perspective, respondents perceived the Olympics as a somewhat successful enterprise.

The mistuned forced response of turbine engine bladed disks is treated using harmonic perturbations in the properties of a continuous ring. A continuous shear spring is attached to the ring in which the stiffness is allowed to vary along the ring annulus. The modes of such a structure with a single harmonic mistuning pattern are shown to obey the Mathieu equation, which is solved to obtain the natural frequencies and modes of the mistuned system. The forced response of the system is then examined to determine the sensitivity of the system to small mistuning. The model is extended to include multiple harmonics, allowing for the possibility of general mistuning. An expression for the maximum amplitude magnification due to small mistuning is developed by showing that high response is caused by distortion of the structural modes. A method to intentionally mistune systems for maximum forced response is demonstrated, and numerical results demonstrate the accuracy of the analytical prediction. The intentionally mistuned system response is shown to be robust with respect to small random mistuning. Such a result might be useful for designing a test rotor for screening new bladed disk designs or for establishing root cause of fatigue problems.

A continuous method is presented for representing the mode interaction that occurs in frequency veering in terms of the nominal sector modes of a cyclic symmetric bladed disk model constrained at a reference interblade phase angle. Using this method, the effect of frequency veering on the mode shapes can be considered in the context of the generalized forces exciting the system and the modal response of the bladed disk. It is shown that in a blade-dominated family of modes, the transfer of modal energy to the disk in the veering results in a lower generalized force exciting the mode as well as reduced response amplitude in the blade. For the disk-dominated modes, the sharing of modal energy with the blades can lead to the disk being excited by aerodynamic loading. These effects can have important implications for predicting and interpreting forced response in bladed disks. Numerical examples are provided to illustrate these concepts.