Seasonal weather sensitivity,temperature thresholds,and climate change impacts for park visitation

Historical park visitation and weather data, taken at the daily time scale from 2000 to 2009 for Pinery Provincial Park in southern Ontario (Canada), were analysed as an objective measure of the weather sensitivity, temperature thresholds, and potential impacts of projected climate change for park visitation. Three seasonal weather-visitation models were constructed using multivariable linear regression (peak, shoulder, off-season). To account for both natural and institutional seasonality, the weather-visitation models included both climatic (temperature, precipitation) and social (weekends, holidays) variables, which demonstrated equably comparable effects on visitation across the three models. Critical temperature thresholds were identified for each season using one-way analysis of variance to determine the range of temperatures within which the threshold was evident; the specific degree of temperature associated with the threshold was identified within the seasonal regression models. Temperatures over 33 °C during the peak season and over 29 °C during the shoulder season indicated critical thresholds at which point conditions that were ‘too hot’ for some caused a decline in visitation. Furthermore, temperatures below 11 °C indicated another critical threshold, where conditions were ‘too cold’ for most and therefore park visitation was less sensitive to temperature variability below this threshold. A partial sensitivity analysis for the impact of a warmer, wetter climate on park visitation was conducted, illustrating the effect of a 1 °C to 5 °C warming in maximum temperatures, coupled with a 5% to 15% increase in total precipitation. In response to projected climate change, the weather-visitation models suggested that for each additional degree of warming experienced, despite the negative effects of increasing precipitation and more frequent heat extremes, annual park visitation could increase by 3.1%, annually. The projected increase in park visitation as a result of rising temperatures was mainly associated with shoulder season visitation, with only minor increases in peak season visitation.     

Hope in the Face of Temporal Devastation

This article evaluates Jonathan Lear's account of radical hope in light of the phenomenon of social acceleration. According to Lear's philosophical exegesis of the life of the Crow Nation's last chief, Plenty Coups, radical hope is hope based on the conviction that the world's goodness transcends but includes the goodness of human culture. Such hope enables a culture to persevere in the face of its own collapse through political humility, by which a culture draws on the resources of other cultures in order to revive itself. Social acceleration—which results in the warping of our sense of time as tensed between past, present, and future—demands a more primordial form of radical hope, based on the affirmation of the world's own temporalities as simultaneously resisting and sustaining our own cultural temporalities. This in turn involves a more self-critical form of political humility.     

From Fighting Underpopulation to Curbing Population Growth: Tracing Colonial Power in German Development Interventions in Tanzania

This paper investigates how colonial power is rearticulated in policy and practice of German development cooperation in Tanzania. Drawing on archives and interviews, it analyses the emergence of interventions with regard to population control and reproductive health during Germany's colonisation of ‘German East Africa’ and compares these interventions to present-day German development assistance in Tanzania. While German policies during colonial rule addressed ‘underpopulation’ and contemporary German development aid stresses population growth to be the problem, this paper finds that racialised, gendered discourses are interconnected with the political economy of population control in both periods. It highlights that colonial power in development cooperation can only be fully comprehended by tracing the continuity of colonial discourses to material practices as well as economic interests of the Global North, and argues that critique of population politics should address population control in general – whether anti- or pro-natalist – as imbued with racism and serving the interests of capital. Such a perspective might allow us to be sensitive to possible future developments in population and reproductive health policy towards the Global South, in which antinatalist (regarding marginalised people) and pronatalist (regarding privileged people) policies run concurrently, as is the case in countries of the Global North today.     

Competitive Location and Pricing on Networks

In this paper we consider a location and pricing model for a retail firm that wants to enter a spatial market tvhere a competitor firm is already operating as a monopoly with several outlets. The entering firm seeks to determine the optimal uniform mill price and its servers' locations that maximize profits given the reaction in price of the competitor firm to its entrance. A tabu search procedure is presented to solve the model together with computational experience and an example.     

Competitive Location and Pricing on Networks

In this paper we consider a location and pricing model for a retail firm that wants to enter a spatial market where a competitor firm is already operating as a monopoly with several outlets. The entering firm seeks to determine the optimal uniform mill price and its servers' locations that maximize profits given the reaction in price of the competitor firm to its entrance. A tabu search procedure is presented to solve the model together with computational experience and an example.