Distribution of Fusarium wilt of muskmelon and watermelon in southwestern Ontario was studied. Particular attention was paid to morphological and physiological variations of the isolates obtained. Morphological variations were based on comparison in culture with a selected standard. Physiological variations were detected by pathogenicity experiments, and a study of assimilation of various carbon and nitrogen compounds. Some further aspects of the biology of the organisms were investigated. An experiment was carried out, employing several muskmelons and watermelon varieties, to compare their resistance under field conditions. / Thesis / Master of Science (MS)

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No description available.

<p>This thesis adopts a socio-ecological perspective on health and examines everyday life for the community-based chronically mentally disabled (CMD) in Hamilton, Ontario. As with most larger North American cities, this population is residentially concentrated in inner city census tracts. This shared central location implies common experience of aspects of the urban environment.</p> <p>An analytical framework is developed, based on socio-ecological principles. Coping and satisfaction are identified as two dimensions of community experience that may augment conventional measures of post-hospital outcome. On the framework, seven subsets of client and community variables are identified: personal characteristics, psychiatric profile, psychiatric services, housing, social support, lifestyle and beliefs and attitudes. Survey data collected in two rounds of interviews from an initial sample of 66 CMD clients from three aftercare programs are used to undertake both quantitative and qualitative analysis. In the former, composite measures of coping and satisfaction are constructed and the relationship between these indices and client and community variables are examined using bivariate and multivariate techniques. Qualitative analysis is based on narrative accounts offered by clients in the course of interviews. An interpretation of these texts and analysis of daily activity patterns is undertaken at both the level of particular individuals and the sample as a whole. This analysis of the experience of time, space and community life for the sample complements the evidence from quantitative inquiry.</p> <p>Findings from the quantitative analysis indicate that clients coping well in the community were more involved in gregarious activities, had enough to do, had more significant others and were more involved in mental health services. Those more satisfied were older, had more significant others, did not live in a lodging home, were more residentially stable, had enough to do and were not recipients of an income supplement. Results of the qualitative analysis of narrative accounts and time budget data indicate that poverty and unemployment compound the effects of illness and lead to a monotonous experience of relatively unconstrained time within a highly constrained activity space.</p> / Doctor of Philosophy (PhD)

Regional growth literature indicates that the relations between the core and the peripheral regions, and the process by which growth is transmitted between regions are of prime importance in discussing growth disparities. Northeastern Ontario is a peripheral region, economically subordinate to the Ontario core region, and exhibits adverse growth conditions. Diversification of the region's resource dependent economy has been called for by many groups but has been hindered by the perception of higher manufacturing production costs. However, these costs have not been investigated. In this thesis, Northeastern Ontario centers' factor costs in manufacturing are compared with core centers' costs by utilizing a cost accounting method. The results indicate that some Northeastern locations may be cost attractive locations. However, low costs derived for Toronto would indicate continued manufacturing concentration in the principle centers of the core region. When costs are calculated for hypothetical firms, the importance of the factor requirement structure is indicated in determining location. Northeastern locations would be attractive to firms with large land, and low labour requirements. If future analyses verify these results, alternative explanations of the development problem of the Northeast should be explored. / Thesis / Master of Arts (MA)

The significance of the Canadian timber industry and its subsequent contributions to the economic structure of early Canada is well-documented. Discussions on the growth of the industry centre around the expanding American markets, British interest in Maritime forest resources and the shifting of interest to the resources of the Canadian Shield, culminating on the trade in the Ottawa Valley. The effects of water transportation routes and construction of the railway system on trade are also significant themes. Furthermore, historical sketches on various lumbering giants, and tales of myth-like lumberjacks and shanty towns add colourful sources of slightly more specific details of the lumbering era. The relationship between the settler and lumbermen comprises yet another area of relevant concern. Studies of settlement patterns and timber boom towns logically follow the discussions on the partnership between lumbermen and farmers.To fully appreciate the significance of the timber trade in Canada, and more specifically in Upper Canada, a clear appreciation of all the above data is necessary. One level of documentation, however, is curiously absent from the discussion on lumbering and that is the level of very specific detail. Very few attempts have been made to document the arrival of lumbering on the primary level of individual land licence application. This paper acknowledges this oversight and initiates a methodological, lot by concession lot, study of lumbering in a defined study area. / Thesis / Candidate in Philosophy

Examining human settlement in the Long Point Region of Ontario, the author attempts to frame the analysis in terms of a general theory of human settlement. Significant variables are isolated, analysed and explained in terms of regularities of human behaviour. To test the logic and content of the study, the analysis is then inverted. / Thesis / Master of Arts (MA)

The peculiar geological structure of the Sudbury Basin, with its agricultural land surrounded by a rooky rim, highly concentrated with nickel, is unique . in the Pre-Cambrian of Northeim Ontario. On the rim of the basin are located seven nickel mines, which at present are producing 90 - 95% of the world’s nickel. Due to this fact, numerous geological studies have been undertaken in the Sudbury area. All the papers that have been written on the basin, deal exclusively with geological features. Very little, if any study has been made of the other aspects within the basin. This thesis, will deal mainly with the floor of this geo-syncline or as we will call it — the Blezard Valley. Unlike the rim of the basin, this lowland has only one small nickel mine. Agriculture is the main activity in this region, with large farms found on the sand loam and clay soils. This study will endeavour to give a historical picture of agriculture in the valley, with an attempt to see what changes have taken place since the area was first settled. In the first chapter, the geology of the Sudbury Basin will be discussed. A rather full account will be given of how the basin originated. Also in this chapter, the physiography and drainage patterns will be described. In the second chapter, there will be a discussion on climate, vegetation and soils, to complete the section on physical geography. Here, an attempt will be made to show how the three aspects affect agriculture in the valley. The history of settlement, will be the theme of the third chapter. It will be seen from this chapter, the important roles played by the Canadian Pacific Railway, the lumbering camps, and the mines in opening up this valley. Portions of this chapter will deal only indirectly with the historical settlement of the lowland. The fourth chapter will be a discussion on the main economy of the valley — agriculture. A description of past and present agriculture will be undertaken along with an account of how agricultural changes are taking place as a result of outside forces. The latter part of this chapter will deal with the problems facing agriculture. The last chapter will deal with the present population pattern in the valley. A brief description will be given of the small urban communities, along with an analysis of the rapid rate of growth of these centres within the last two or three years. A look into the future, in regard possible population growth, will be given in conclusion. / Thesis / Bachelor of Arts (BA)

This thesis discusses the uneven trend of progress in relation to rural Ontario. Analysis of the success of farmers' organizations and the methods farmers used is discussed. These methods include advancements made in communication, education, etc. Potential future trends in these communities are hypothesized. / Thesis / Master of Arts (MA)

"Regional growth theory requires the explicit introduction of two fundamental dimensions - time and space. The time dimension was successfully brought into economic theory with the release of Keynes’ assumption of a constant production capacity. Model building in the field of growth theory of national economics continues to achieve high levels of theoretical sophistication, including the empirical application of rather abstract models. Independent of these striking developments in dynamic analysis was the introduction of the spatial dimension, mainly through the work of Walter Isard in the late 1950's. These two. fundamental innovations, however, failed to be integrated. Growth theory formulated its models for a wonderland of no spatial dimension, and regional science did not bother to introduce the time dimension." (Siebert, 1969, pp. 5 - 6). The importance of incorporating temporal dynamics into building urban and regional planning models is becoming increasingly recognized. Forrester’s (1969) urban dynamics model, which gives a purely temporal, non-spatial simulation model of the city is one example of this line of development. The Lowry (1964) model of urban land use has been given a number of temporal reinterpretations such as the Tomm and Empiric models (Lowry, 1967). A third approach is the work focussing on the spatial transmission and description of business cycle impulses in urban and regional economic systems. The present study falls in line with the last approach. It involves an empirical identification of the variations in the timing and intensity of employment fluctuations existing among cities in Southern Ontario. Economic change or growth in one urban place is viewed as, at least, a partial function of changes taking place elsewhere in the urban system. The structure of urban interdependencies is conditioned by the frictions of distance, by the existence of urban size thresholds and hierarchies and by inter-market, industrial and financial linkages. These spatial relations are examined in reference to growth pole theory and to the literature on economic fluctuations in urban/regional systems. Some spatial considerations in growth pole theory are discussed first, followed by a review of a number of limitations and neglected issues found in the empirical research. Based on this theoretical and empirical review, the study attempts to show how an analysis of urban short run phenomena such as cyclical fluctuations is related to growth pole theoretical constructs and how it is useful in the empirical testing of growth pole processes and in planning applications. A conceptual framework is then outlined, structuring the way economic impulses are generated through national, regional and local mechanisms and transmitted through the urban system and how the impacts of these impulses on urban centres vary in intensity and timing. From this conceptual framework, three analytical procedures for examining certain questions about change in an urban system and for investigating spatial interdependencies in urban short run economic behaviour, are outlined. First, factor analysis as a technique for studying spatial— temporal patterns in the intensity and timing of growth among cities is presented. Second, a model that deals with the decomposition of urban time series data into three components, a long term growth trend, a national cyclical component and a regional component, is presented. Third, a model for testing for spatial-temporal growth trends (polarization trends) at the regional level is developed. Time series data, consisting of monthly industrial composite employment indicies for a five year time period from January, 1968, to December, 1972, for 29 cities in Southern Ontario, are applied to the analytical methodologies. The monthly observations are seasonally, adjusted, using dummy variables and least squares multiple regression. Some concluding statements are made in the final chapter. / Thesis / Master of Arts (MA)