The aim of this thesis is to characterize a number of Expos that took place in recent years, and to analyze their impact on the host regions. Two World Expos and two International Specialized Expos will be analyzed. This thesis aims to describe the differences between these two categories and between individual exhibitions within the same category. When analyzing the impacts the greatest attention will be paid to the impacts associated with tourism. With reference to the analysis, it will be possible to say whether the Expos have importance nowadays.

Thesis (M. Sc.)--University of Hong Kong, 2009. / Includes bibliographical references (p. 161-167).

The applications of the pesticide DDD to the water of the St. Lawrence River prior to and during the World Exhibition of 1967 in Montréal, Québec were examined. The pesticide was applied between 1965 and 1967 in excess of 16 000 kg to abate nuisance shadflies. To determine if the evidence was captured in the environmental media, sediment cores were sampled from a fluvial lake downstream of the Expo ’67 site, Lac Saint-Pierre, Québec, Canada and from an upstream fluvial lake, Lac Saint-François, Ontario and Québec, Canada. Sequential slices of sediment cores from the two lakes were analyzed and compared for pesticide concentrations using gas chromatography and dated using 137Cs isotopes. The percentage of total carbon in the sediments was also analyzed to express pesticide concentrations on a carbon basis. Concentrations of DDD and DDE in Lac Saint-François ranged from below detection to 12.2 ppb and from below detection to 11.5 ppb, respectively. Concentrations of both contaminants were highest approximately between the late 1950’s and early 1960’s, consistent with historical use patterns. DDT was not detected in sediment slices from Lac Saint-François at any depth. Concentrations of total DDD, DDE and DDT in Lac Saint-Pierre ranged from below detection to 26.4 ppb, from below detection to 20.9 ppb, and from below detection to 80.5 ppb, respectively. Contaminant concentration distributions demonstrated very complex and multi-peaked profiles that were not reflective of expected historical use patterns. The influence of sediment grain size and carbon content on the contaminant profiles was examined but did not appreciably explain the complexity. Mixing of sediment due to physical processes in combination with other variables may help explain the complex contaminant and 137Cs activity profiles. Although pesticide concentrations were generally higher in the downstream lake compared to the upstream lake, conclusions of the source of the pesticide cannot be accurately drawn due to the complex signals in Lac Saint-Pierre and the absence of DDT in Lac Saint-François, which prevents the comparison of a DDD:DDT breakdown ratio. / Thesis (Master, Environmental Studies) -- Queen's University, 2010-04-27 18:58:14.505

This thesis examines the landscape of Expo 67, in both its original and current state, and diagnoses a set of design and programming issues. In the mid-1960s, the city of Montreal undertook a vast construction project in the St. Lawrence River, which doubled the size of the existing Ile-Sainte-Hélène and entirely created the adjacent Ile-Notre-Dame. Together, these new islands provided the site for Expo 67. The world exhibition has since been dismantled and the site now contains a patchwork of landscape design proposals. The construction of the islands is investigated relative to the earthwork practices that were emerging at the time they were built. Adjacent art practices are subsequently mined to develop a response to the present state of the site. This somewhat rhetorical design method intends to provoke discussion of the best use of the site and attempts to recover the specific nature of the place – a once densely built ground, partially conceived as a laboratory of ideas for the future of the city – now obscured beneath a relatively generic mantle of picturesque landscaping. The proposed design features a series of large-scale greenhouse structures arrayed in relation to the site’s existing metro station, connecting the present landscape’s features in an integrated network with sustainable elements. This network aims to restore the civic status of the park, to promote the use of the territory as an experimental ground, and to strengthen the dialectic between the site and the culture of the city that created it.

The toxic, persistent pesticide dichlorodiphenyldichloroethane (DDD) was used liberally prior to and during the World Exposition of 1967 (Expo 67) on Île Sainte-Hélène in Montréal to reduce the population of nuisance Trichoptera insects (also called caddisflies or shadflies) in the area. Sixteen thousand kilograms were applied over six periods in two years. Despite reports by the project leaders that the practice was not detrimental to the ecosystem and that DDD was not detected downstream in significant concentrations following applications to the river, further investigation was required to determine the occurrence of the pesticide, and its concentrations. Given the large volume of pesticide that was applied to the river, I hypothesized that there would be a strong DDD signal in sediments downstream of the Expo 67 site. I obtained a sediment core from the bay of Île de Grâce at the mouth of Lac St Pierre in the St. Lawrence River, downstream of Montréal. The core was sliced, dated radioisometrically, and analysed for the presence of dichlorodiphenyltrichloroethane (DDT) and related pesticides using gas chromatography. The isotopes cesium-137 (137Cs), radium-226 (226Ra), and lead-210 (210Pb) were used to establish dates of sediment deposition. Loss on ignition was used to determine organic carbon content. Stable lead content was analysed because it may also support sediment ages. Concentrations of DDT, DDD, and dichlorodiphenylethylene (DDE) ranged from below the detection limit to 3.3 parts per billion (ppb), 57.7 ppb, and 17.1 ppb, respectively. Adjusting the concentrations to reflect organic carbon content did not significantly affect the trend in concentration by depth. Peaks in DDD concentrations and related compounds were discovered that correspond to the Expo 67 applications. These findings demonstrate that DDD was present in unusually high concentrations (well above the probable effect level of 8.51 ppb (Ontario Ministry of the Environment)) in the St. Lawrence River in 1967, potentially exposing a wide variety of organisms. This finding may also be used to inform future decisions regarding the management of the St. Lawrence Seaway. I also investigated the role of fragmentation, specialisation, and interdisciplinarity in this research, and critically examined the historical context of this project in order to pursue knowledge of this field with as full an understanding of it as possible. / Thesis (Master, Environmental Studies) -- Queen's University, 2012-05-31 02:27:28.215

This thesis examines the landscape of Expo 67, in both its original and current state, and diagnoses a set of design and programming issues. In the mid-1960s, the city of Montreal undertook a vast construction project in the St. Lawrence River, which doubled the size of the existing Ile-Sainte-Hélène and entirely created the adjacent Ile-Notre-Dame. Together, these new islands provided the site for Expo 67. The world exhibition has since been dismantled and the site now contains a patchwork of landscape design proposals. The construction of the islands is investigated relative to the earthwork practices that were emerging at the time they were built. Adjacent art practices are subsequently mined to develop a response to the present state of the site. This somewhat rhetorical design method intends to provoke discussion of the best use of the site and attempts to recover the specific nature of the place – a once densely built ground, partially conceived as a laboratory of ideas for the future of the city – now obscured beneath a relatively generic mantle of picturesque landscaping. The proposed design features a series of large-scale greenhouse structures arrayed in relation to the site’s existing metro station, connecting the present landscape’s features in an integrated network with sustainable elements. This network aims to restore the civic status of the park, to promote the use of the territory as an experimental ground, and to strengthen the dialectic between the site and the culture of the city that created it.

Thesis (M. Sc.)--University of Hong Kong, 2008. / Includes bibliographical references (p. 144-151).

The motto of the Expo 2015 in Milan, is "Feeding the planet, energy for life." The main idea of the design of the pavilion is Food – energy for life. The attempt of the thesis lies in pointing on rational eating and a healthy lifestyle. Not only is the reason the influence on an individual, but the influence on a whole society. The thesis is devoted to a solution of a thematic function of the pavilion, a way of presentation, a detailed solution of the pavilion construction and subsequent recycling of the pavilion.

This study proposes a strategy which will assist governments, the sponsors of hallmark events, and community groups to identify and plan for the negative housing impacts of such events. Hallmark events are major one-time or recurring events of limited duration, developed primarily to enhance the awareness, appeal and profitability of a tourist destination in the short and/or long term. World's Fairs and Olympic Games are two examples of hallmark events. The 1986 World's Fair (Expo 86) in Vancouver provided an opportunity to document the impacts of this hallmark event on the residents of a community which borders the fair site and on the planning practices of the local government. Five research questions are addressed: 1) How has the nature of World's Fairs changed since their emergence in the late 19th century? 2) To what extent have World's Fairs been used as an inner city redevelopment tool; what have their housing impacts been; and, how have these impacts been planned for? 3) What was the nature of the housing impacts of Expo 86 on the residents of the Downtown Eastside community in Vancouver? 4) What was the City of Vancouver's planning process with respect to the potential and then actual housing impacts of Expo 86 on the residents of the Downtown Eastside? 5) What were the reasons for the success and/or failure of the City of Vancouver's planning process? These research questions are explored by: undertaking a literature review; corresponding with academics, planners and World's Fair staff in cities where fairs have or will be held; interviewing representatives of Expo 86, the City of Vancouver and the impacted community; analyzing City files on the issue; and, personal observation. The results suggest that the nature of World's Fairs has changed considerably since their emergence. In the last two decades, their use as an inner city redevelopment tool, in combination with the pressures created by millions of fair visitors, has created four different types of housing impacts: on-site impact; post-announcement speculative impact; pre-Expo tourist demand impact; and, post-Expo impact. In Vancouver, for example, between 1,600 and 2,600 lodging house units were demolished or converted between 1978 and 1986 in a community bordering the fair site (Expo 86 was announced in 1980). In addition, between January and June, 1986, 500 to 850 residents were evicted from lodging houses (Expo 86 opened on May 2, 1986). The evaluation of the City of Vancouver's planning process for the Expo 86 housing impacts suggests that the City was adequately prepared. However, it was the politics of planning -- the issues of political jurisdiction, ideology and ideological differences -- which resulted in the City's failure to stop the negative housing impacts. This study concludes by recommending that a systematic planning process be implemented for addressing the housing impacts of hallmark events. Planners should adapt their role in the process to fit the planning environment. Lastly, governments, sponsors of hallmark events, and community groups should implement a wide range of options to prevent negative housing impacts from occurring. Examples of such options and some "points to consider" are presented in Chapter Five of this study. / Applied Science, Faculty of / Community and Regional Planning (SCARP), School of / Graduate

Thèse (de doctorat)--Université Laval, 2003. / Titre de l'écran-titre (visionné le 23 mars). Bibliogr.