No description available.

A combination of technical innovations, system cost reductions, and post-1970's tourism industry restructuring has led to the development and diffusion of a variety of sophisticated computer reservation systems, or CRSs. Questions remain as to the extent to which tourism suppliers and destinations have achieved CRS links. In this case study of two urban destinations, Montreal and Toronto, tourism supplier relationships with CRS technology are examined. Drawing on results from the accommodation and attraction sectors of each city, the varying degrees of CRS adoption and impact are illustrated. CRS adoption by firms is shown to be constrained by a variety of management market, and tourism product-oriented barriers. Strategies employed by tourism suppliers to counter and overcome these barriers are identified. Following a review of tourism and information technology policies within Canada, some regulatory initiatives that may assist in facilitating successful technology adoption and use among the various components of the urban tourism product are proposed. The constantly evolving 'technological' channels and networks of tourism marketing and distribution are shown to be important influences on tourism destination policy. (Abstract shortened by UMI.)

No description available.

Comme toutes modulations multiporteuses, l'OFDM souffre d'une forte variation d'amplitudes qui se traduit par un PAPR élevé. Cette caractéristique de l'OFDM la rend très sensible aux non-linéarités de l'amplificateur de puissance. Pour faire face à cette problématique, on peut surdimensionner l'amplificateur de puissance (solution non efficace en terme de rendement énergétique), linéariser l'amplificateur via les techniques de pré-distorsions, ou réduire le PAPR du signal avant amplification. L'objectif de cette thèse s'inscrit dans cette dernière thématique et plus particulièrement sur les techniques dites d'ajout de signal.Dans cette thèse, après une étude sur l'état de l'art des techniques de réduction du PAPR et en particulier les techniques dites d'ajout de signal, nous avons développé et proposé de nouvelles techniques de réduction du PAPR. Ces contributions s'articulent principalement autour des techniques de Clipping et de la Tone Reservation. / One of the main drawbacks of the OFDM modulation scheme is its high Peak-To-Average Power variation (PAPR) which can induce poor power efficiency at the transmitter amplifier. The digital base band pre-distortion for linearisation of power amplifier and the PAPR mitigation are the most commonly used solution in order to deals with efficiency and linearisation at the high power amplifier. This thesis is focused on the PAPR mitigation solution, and particularly on the adding signal based techniques. The proposed solutions in this report are about improving the Tone Reservation method which is the most popular adding signal based technique for PAPR mitigation, and also the classical clipping method which is the most simple method (in terms of computational complexity) actually.

No description available.

No description available.

No description available.

No description available.

Studies have shown that ecotourism is one of the fastest-growing sectors in the tourism market. To date, there has been very little systematic research focused on the general topic of ecotourism development on Indian reservations. This study researches possible ecotourism alternatives on the Standing Rock Sioux Indian Reservation (SRSIR) in North Dakota. Choice experiments were employed to analyze the preferences of reservation residents and those of cultural tourists. Reservation tourism personnel and local investors will benefit from the information this study provides. Data for this research were collected through a series of field surveying campaigns. Surveying was conducted on the SRSIR as well as off reservation sites in the surrounding area. All respondents were adults and included a random sample of reservation residents and tourists who demonstrated an interest in cultural and/or nature-based tourism experiences. Results of this study demonstrate an overwhelmingly positive attitude by all populations toward ecotourism development. Local residents and powwow tourists proved to be insensitive to price, contradicting economic theory. Non-powwow tourists proved to be sensitive to price.

No description available.