Some New Methods of Topologic Classification of Channel Networks

Some new methods for the topologic classification of channel networks are proposed. These methods are all based on the concept of topologic path length, or number of links from the network outlet to a junction or source. Two parameters, the total path length (sum of all path lengths) and the diameter (largest path length) are shown to be useful in network analysis. Some advantages of these parameters are that they are easy to measure, have straightforward topologic interpretations, and are closely related to important geometric measures. Moreover, they are capable of explaining various empirical geomorphic “laws,” such as the 0.6 power relation between mainstream length and area.     

Is Morality Policy Different? Testing Sectoral and Institutional Explanations of Policy Change

We analyze morality policy change from the perspective of punctuated equilibrium theory (PET) to test whether reform dynamics in this policy sector follow a distinct pattern. First, we propose a new measurement scheme capturing changes in the intensity of morality policy output. Second, we demonstrate that morality policy change is strongly punctuated. Finally, and most importantly, we show that the degree of policy punctuations varies between different domains of morality policy, but not according to institutional features operating on the country level, supporting existing PET research, which has discovered similar domain‐specific dynamics in changes of public spending. Specifically, punctuations are particularly pronounced in areas of manifest morality policy, that is, policies characterized by strong value conflicts, whereas punctuations are less pronounced for latent morality policies, that is, policies in which other dimensions of conflict are present next to the value dimension. Significant differences in reform dynamics are neither discerned for countries belonging to the religious or the secular world, nor for countries with majoritarian or consensual democracies. The analysis relies on an original dataset capturing legislative changes in five manifest (abortion, euthanasia, prostitution, pornography, and homosexuality), and three latent morality policies (drugs, gambling, and handguns) in 19 European countries (1960–2010).     

Middle Stone Age Technology and Cultural Evolution at Magubike Rockshelter,Southern Tanzania

This paper contributes new information to the body of evidence for Middle Stone Age tool-use in Tanzania. Magubike rockshelter is located in an archaeologically unexplored region of the south-central part of the country, and thus fills a significant geographical gap between sites further to the north and those to the south in Zambia and Mozambique. Early analysis of a portion of the lithic materials demonstrates parallel changes in lithic reduction intensity, raw material preference and typology. This article explores possible explanations for this pattern, including the possibility that they reflect changes to local environment, and suggests avenues for future research.     

From Blind Spot to Media Spotlight: Propaganda Policy,Media Activism and the Emergence of Protest Events in the Chinese Public Sphere

Abstract

In recent years, popular protest in China has emerged from a state of near-invisibility. Drawing on a diachronic analysis of news media coverage, this paper traces how a number of major protest events gradually entered the Chinese media’s spotlight and came to be portrayed in an increasingly protester-sympathising fashion over the course of the Hu-Wen administration. It argues that these changes were triggered by structural transformations of the Chinese public sphere, but underlines that deliberate policy choices by the political leadership served as a crucial agent of change. Facing proliferating unrest and an increasingly unimpeded flow of information, the central authorities have gradually shifted propaganda policy from a suppressive to a more proactive approach. They have thereby created critical opportunities for Internet users and investigative journalists to push the envelope further towards protester-sympathising accounts. The development is significant as there are good reasons to surmise that increased media coverage has exacerbated the dynamics of popular contention. Theoretically, it deserves to be noted that non-inevitable choices by an authoritarian leadership have led to an outcome in which media coverage of citizens who challenge the state on the streets has become substantially more frequent and positive than before.