The Policy Sciences of Social Media

Twitter, Facebook, and other social media are increasingly touted as platforms not merely for networks of friends and for private diversion, but as vehicles that allow ordinary people to enter and influence the many arenas of public life. On the surface, the disparate and shapeless population of “i‐reporters,” policy “tweeters,” and anonymous news web site “commentators” would appear to challenge the comparatively well‐defined cast of professional diplomats, journalists, and propagandists that Harold D. Lasswell identified as policy‐oriented communicators. However, to illuminate the roles and impacts of social media in politics and policymaking, insights from Lasswell's “science of communication” must be embedded in Lasswell's broader lessons on value assets and outcomes. A closer look at the so‐called democratizing functions of social media in politics reveals the influence of powerful intermediaries who filter and shape electronic communications. Lasswell's insights on the likelihood of increased collaboration among political elites and skilled, “modernizing intellectuals” anticipates contemporary instances of state actors who recruit skilled creators and users of social media—collaborations that may or may not advance experiments in democracy. Lasswell's decision process concept is deployed to discover social media's strengths and weaknesses for the practicing policy scientist.     

Networks of Adjacent Action Situations in Polycentric Governance

Within the Institutional Analysis and Development (IAD) framework, the concept of an action situation generalizes a game to allow for endogenous changes in its rules. This article re‐visits this core concept to explore its potential for serving as the foundation for a systematic approach to the construction of more elaborate models of complex policy networks in which overlapping sets of actors have the ability to influence the rules under which their strategic interactions take place. Networks of adjacent action situations can be built on the basis of the seven distinct types of rules that define an action situation or by representing generic governance tasks identified in related research on local public economies. The potential of this extension of the IAD framework is demonstrated with simplified network representations of three diverse policy areas (Maine lobster fisheries, international development assistance, and the contribution of faith‐based organizations to U.S. welfare policy).     

Dynamics of Land Surface Temperature in Response to Land‐Use/Cover Change

In this study, we employed Geographical Information Systems and remote sensing techniques to investigate the impact of land‐use/cover change on land surface temperature (LST) in a rapidly urbanisation city, Kunming in south‐west China. Spatial patterns of LST and land use for 1992 and 2006 were derived from Landsat images to examine how LST responded to urban growth. Remote sensing indices were used to quantify land‐use types and employed as explanatory variables in LST modelling. The geographically weighted regression (GWR), a location dependent model, was performed to explore the influences of the spatially varied land‐use conditions on the LST patterns. Results revealed that rapid urbanisation in Kunming altered the local thermal environment, particularly in increasing the LST in the zone surrounding the urban core. Remote sensing indices demonstrated that water and vegetation played an important role in mitigating the urban heat island effect, while built‐up and barren land accounted for the increase in LST. The GWR improved the goodness‐of‐fit for LST modelling and provided insights into the spatially varied relationship between LST and land‐use conditions.     

Patterns of Nutrient Concentrations across Multiple Floodplain Surfaces in a Large Dryland River System

Deciphering patterns and inferring processes in multicausal floodplain river ecosystems is a challenge in river science. The effects of larger‐scale top‐down constraints and smaller‐scale bottom‐up influences on the spatial patterns of nutrient concentrations across multiple inset‐floodplain surfaces was studied in a large dryland floodplain river (Barwon‐Darling River, south‐east Australia). The distribution of sediment‐associated carbon, nitrogen, and phosphorus was primarily related with significant differences in the textural character of the different floodplain surfaces. Elevation of the different floodplain surfaces above the active channel was a secondary influence on the distribution of carbon and phosphorus. Combined, these factors produce a spatial patch mosaic of sediment associated carbon, nitrogen, and phosphorous across these floodplain surfaces.     

Unstable properties: British Columbia,aboriginal title,and the “new relationship”

In the span of a few years, Premier Gordon Campbell transformed himself from a strong political critic of Aboriginal peoples in British Columbia to their apparent champion within a “new relationship.” The subsequent sudden collapse of Campbell's alliance with First Nations is a window into federal‐provincial relations, constitutional change, Aboriginal political organization, and the consequences of decisions made more than a century ago. Drawing on Nietzsche, we argue that Campbell's intentions, either to control or support Aboriginal peoples, were almost irrelevant; our focus should be on the “will to power” and efforts to stabilize power through territory. As a result of the collision of Aboriginal political mobilization, the expansion of natural resource development, and a series of court decisions, the unresolved nature of Canada's territorial claim to most of the land that is now British Columbia has finally reached a point where it can no longer be ignored, either politically or legally. However, the province lacks the legal authority to recognize or deny Aboriginal title, leaving the provincial government and indigenous peoples in British Columbia equally held hostage by the federal government.     

La frontière asymétrique : Franco‐Ontariens et Anglo‐Québécois dans la région de la capitale nationale

The francophone and anglophone minorities of Gatineau‐Ottawa appear to benefit from a privileged location. Living very close to their respective majorities, they simply have to cross the border in order to access resources to live in their own language and share their culture. However, a qualitative analysis of the discourse by Anglo‐Quebeckers and Franco‐Ontarians about their everyday life in the Nation's Capital Region shows that the border has more complex and often contradictory effects. In this article, we focus our attention on four particular manifestations of the border: (1) the border is transparent so that one can cross the Ottawa River without hindrance in certain contexts yet rather opaque in others; (2) one may transcend minority status through the strategic use of the border; (3) it creates a multi‐topic imaginary geography in which the border itself often becomes mobile; and (4) finally, the border can act as a mirror when the cross‐cultural intermixing it allows causes the Anglo‐Quebeckers and Franco‐Ontarians to question their identities, a questioning which would not be as intense in the absence of the border. The comparison of these two minorities makes it possible to highlight the asymmetrical nature of the effects of the border on their everyday life, identities, and sense of belonging.     

MEAN SHIFT: A NON‐PARAMETRIC ALGORITHM FOR THE SEGMENTATION OF ANOMALIES IN GEOPHYSICAL IMAGES OBTAINED FROM MAGNETIC PROSPECTION DATA

This paper studies the applicability of the Mean Shift algorithm as support in interpreting geophysical images produced, on this occasion, from magnetic prospection data. The data obtained from a magnetic survey carried out in Gilena (Seville province, Spain) by the La Rábida Archaeophysics Group will be used for the research. Its applicability is illustrated by comparing, on the one hand, some reduction‐to‐pole algorithms and on the other, the (well‐known) k‐means algorithm. Finally, the paper shows the results obtained by applying the Mean Shift algorithm as an alternative method to ‘unsupervised clustering’ of anomalies that appear in images obtained from geophysical data, in which the a priori knowledge of the number of classes is difficult or impossible.     

Gypsy‐Travellers and Welfare Professional Discourse: On Individualization and Social Integration

Abstract: This paper examines the subtle ways in which welfare professionals in the UK construct Gypsy culture as subordinate to the dominant Western concept of “civilization”. Qualitative empirical evidence is presented to show how notions of a resistance to processes of individualization and social integration—which draw on conflicting interpretations of childhood and a perceived lack of aspiration among Gypsy‐Travellers—are seen as legitimate grounds for state and social welfare intervention. The paper argues that a strong group orientation and a more marked gendered division of labour are constructed as being at odds with these dominant social processes. It is posited that the “civilizing” project against Gypsy‐Travellers ignores cultural norms and values resulting in the perception that they are undeserving. The paper suggests that theoretical accounts of social processes at a society wide level require revision in order to understand their varying impact on peripheral minorities in specific spaces.     

Points of Prejudice: Education‐Based Discrimination in Canada's Immigration System

Abstract: Education and skill are increasingly used by states around the world as a central organizing principle in the regulation of migration flows. Immigration theorists have often claimed that use of education and skill to determine “who should get in” to a country is non‐discriminatory, innocent and legitimate. Using the example of Canadian immigration policy, this article argues in contrast that skill‐based migration regimes are discriminatory, violate core principles of public education provision, unjustly create second‐class tiers of immigrants officially classified as “low skilled” in receiving countries, and contribute to a growing problem of “brain drain” of the highly skilled from sending countries worldwide.