Optimal Sampling Design for Variables with Varying Spatial Importance

It is often desirable to sample in those locations where uncertainty associated with a variable is highest. However, the importance of knowing the variable's value may vary across space. We are interested in the spatial distribution of Received Signal Strength Indicator (RSSI), a measure of the signal strength from a cell tower received at a particular location. It is crucial to estimate RSSI values accurately in order to evaluate the effectiveness of mayday systems designed for rapid emergency notification following vehicle crashes. RSSI estimation is less important for locations where the probability of a crash is low and where the likelihood of call completion is either close to zero or one. We develop a method for augmenting an initial spatial sample of RSSI values to achieve a high‐precision estimate of the probability of call completion following a crash. We illustrate the approach using data on RSSI and vehicle crashes in Erie County, NY.     

Courts of World Opinion:

In January 1964, riots broke out along the so-called border between Panamanian cities and the U.S.-run Canal Zone, resulting in loss of life among Panamanians and U.S. citizens and serious economic and political damage on both sides. While historians have mainly focused on the causes of the riots and the U.S.-Panama diplomacy that followed, a close look at the lesser-known international investigations of the violence adds texture and detail to the riots themselves as it also uncovers broader cultural and political dynamics surrounding the episode. This essay, informed partly by interviews with Panamanian participants and by documents from the Panamanian government, argues that Panamanians expressed a potent anticolonial discourse during the investigations, one that allowed them to conceal their government's substantial irresponsibility during the riots and help convince the U.S. government to negotiate the devolution of the canal into Panamanian hands.     

Teachers' Attitudes and the Success of School Choice

The 1990s witnessed growing attention to the adoption of choice-based school reforms, particularly charter schooling and school vouchers. Although researchers have approached the school choice debate from theoretical, normative, and empirical directions, little attention has been paid to examining how teachers view school choice or what factors shape their attitudes. This oversight is significant because teachers can impact the success of school choice experiments in many ways, such as through their willingness to launch and staff schools of choice, adopt new practices developed in schools of choice, and support choice-based reform efforts in their unions and communities. Using a survey of Arizona and Nevada teachers, we find that White, experienced, unionized, Democratic educators and those working in a "positive" school environment are less supportive of school choice. Arizona teachers, who live in close approximation of a free market for education, are particularly hostile to choice, but teachers who have had personal contact with a charter school are more supportive. The results indicate that the success of school choice will likely be influenced by the characteristics of the teacher workforce and teachers' familiarity with competition.     

Top-down or bottom-up: rural settlement and raised field agriculture in the Lake Titicaca Basin, Bolivia

Differing interpretations regarding the organization of past intensive farming are often distinguished as “top-down” or “bottom-up” perspectives. The development of intensive farming and its social organization are attributed to either nascent states and centralized governments or the incremental work of local communities or kin-based groups. We address the social organization of raised field farming in one region of the Lake Titicaca Basin of the Andean altiplano, Bolivia. We evaluate past research in the Katari Valley, including our own, based on recent settlement survey, excavation, and a variety of analyses. Taking a long-term perspective covering 2500 years, we find that relations of production and rural organization changed greatly over time in relation to changing sociopolitical conditions. Local communities played dynamic roles in the development and organization of raised field farming, yet its intensification and ultimate recession were keyed to the consolidation and decline of the Tiwanaku state. We conclude that the top-down/bottom-up dichotomy is overdrawn. Local communities and their productive practices never operated in a political or economic vacuum but both shaped and were transfigured by regional processes of state formation, consolidation, and fragmentation.     

Muslims in Melanesia: putting security issues in perspective

The hype about the potential for terrorism in Melanesia due to the region's weak and failing states has obscured some of the less newsworthy but equally important developments. One of these is the slow but steady growth in the popularity of Islam in Melanesia. This article reviews the limited literature on terrorism in the Pacific. It provides a brief historical overview of the growth of Islam in Melanesia on a country-by-country basis, and draws on a comparative case study and theories of culture and public goods to explore possible reasons for Islam's appeal. It argues that although Islam is likely to continue to grow, its growth is neither a necessary or sufficient basis for declaring terrorist threats to exist. The article emphasises the need to analyse the broader social factors behind Islam's growth as a basis for understanding the conditions through which potential threats to regional security might develop.     

Multiregional Perspectives on the Archaeology of the Andes During the Late Intermediate Period (c. A.D. 1000–1400)

During the Late Intermediate period (LIP, c. A.D. 1000–1400), the central Andes experienced the decline of the Wari and Tiwanaku states, as well as processes of state formation, regional population growth, and competition culminating in the imperial expansion of the Chimú and Inka polities. The LIP holds the potential to link the archaeological features of early Andean states with the material signatures of the later ones, providing a critical means of contextualizing the intergenerational continuities and breaks in state structures and imperial strategies. The recent proliferation of LIP research and the completion of a number of regional studies permit the overview of six LIP regions and the comparison of highland and lowland patterns of political and economic organization, social complexity, and group identity.     

Inside and outside the school lunchbox: themes and reflections

We examine here the discourses surrounding the lunchbox taken to school by children: aspects both of the contents and of how children consume and understand these.1 The observations presented here form part of the preliminary stages of a broader project examining ‘Men, Children and Food’. The project itself is part of a large research programme – ‘Changing Families, Changing Food’ – funded by the Leverhulme Trust (award number F/00118/AQ) from 2006 to 2008, and situated at the University of Sheffield, working in collaboration with colleagues at Royal Holloway University of London. Our aims, in ‘Men, Children and Food’, are to explore the experiences of fathers (and other male figures in the household) and of children, in relation to food practices, including ways in which the two interconnect. View all notes Examples within and beyond the UK suggest that the lunchbox is a container for various aspects of the private and public. What traces can be found inside of wider social relations, including processes of care and surveillance? We argue that the lunchbox consists of intersecting spatialities, within which children constitute a public face, and create identities, relationships and subjectivities; this perspective frames opportunities for priorities in future empirical research with children.