Measuring Space-Time Accessibility Benefits within Transportation Networks: Basic Theory and Computational Procedures

Accessibility is a fundamental but often neglected concept in transportation analysis and planning. Three complementary views of accessibility have evolved in the literature. The first is the constraints-oriented approach, best implemented by Hägerstrand's space-time prisms. The second perspective follows a spatial interaction framework and derives “attraction-accessibility measures” that compare destinations' attractiveness with the travel costs required. A third approach measures the benefit provided to individuals by the transportation/land-use system. This paper reconciles the three complementary approaches by deriving space-time accessibility and benefit measures that are consistent with the rigorous Weibull axiomatic framework for accessibility measures. This research also develops computational procedures for calculating these measures within network structures. This provides realistic accessibility measures that reflect the locations, distances, and travel velocities allowed by an urban transportation network. Since their computational burdens are reasonable, they can be applied at the urban scale using a GIS.     

Measuring Space-Time Accessibility Benefits within Transportation Networks: Basic Theory and Computational Procedures

Accessibility is a fundamental but often neglected concept in transportation analysis and planning. Three complementary views of accessibility have evolved in the literature. The first is the constraints-oriented approach, best implemented by Hägerstrand's space-time prisms. The second perspective follows a spatial interaction framework and derives “attraction-accessibility measures” that compare destinations' attractiveness with the travel costs required. A third approach measures the benefit provided to individuals by the transportation/land-use system. This paper reconciles the three complementary approaches by deriving space-time accessibility and benefit measures that are consistent with the rigorous Weibull axiomatic framework for accessibility measures. This research also develops computational procedures for calculating these measures within network structures. This provides realistic accessibility measures that reflect the locations, distances, and travel velocities allowed by an urban transportation network. Since their computational burdens are reasonable, they can be applied at the urban scale using a GIS.     

Seeing Political Settlements through the City: A Framework for Comparative Analysis of Urban Transformation

This article presents a new analytical framework for studying cities in the developing world based on the ‘political settlements’ approach. This has a dual purpose: to enrich comparative urban research by bringing new theoretical ideas to bear on this field, but also to use capital cities as a lens to better understand national political settlements. The central argument is that urban built environments and their transformations in situations of late development reflect the workings of different varieties of clientelism, and by analysing the former we can better understand the latter. Specifically, issues such as the nature of urban land use and land allocation, the pace and form of construction, the effectiveness of environmental regulation and the provision of housing for different income groups are all revealing of political settlements and their broader development implications. The potential of this approach is explored through three narrative ‘sketches’ of contemporary urban development in Eastern Africa: the ‘city as marketplace’ (Kampala), the ‘city as expo’ (Kigali) and the ‘city as construction site’ (Addis Ababa). In presenting this framework, the article seeks to advance debate on epistemological and analytical approaches to the study of both power relations and differential patterns of urban development.     

Community as a Policy Instrument: A Comparative Analysis

Over recent decades. "community" has been a powerful theme in social policy development not only in the United States but elsewhere in North America and Europe as well. Existing analyses of the concept, however, tended to approach it more from philosophical and sociological perspectives than from the standpoint of policy analysis. This article examines the uses of community as a policy instrument, considering its diverse applications us policy objective, policy means, and policy rhetoric. A cross-section of major community-oriented policies in the United States and Quebec is analyzed, providing a basis file policy-level, regime-level, and political culture comparison. Identifying the key components that community policies may incorporate, we propose a schema for systematically describing deferent types of interventions. Finally. we review the difficulties encountered in implementing policies with a community orientation and the need to avoid simplistic judgments of success and failure.     

Isolation and Isotopic Analysis of Individual Amino Acids from Archaeological Bone Collagen: A New Method Using Rp‐hplc

This paper presents a new method for the isolation and isotopic analysis of some individual amino acids from proteins. The technique and its constituent steps are discussed; then isotopic analyses of amino acids from several samples of bone collagen from the Late Roman site of Poundbury, Dorset, UK are presented. The applications of the method are discussed, as well as some advantages of this technique relative to other methods. Although developed for use with archaeological bone collagen, the technique is equally applicable to other proteinaceous materials. The use of reversed‐phase HPLC avoids problems of isotopic fractionation inherent in using ion‐exchange HPLC. Amino acids are isolated preparatively, allowing both carbon and nitrogen isotopic values to be measured on a single sample using CF‐IRMS. Since amino acids are isotopically analysed in an underivatized form (unlike GC‐C‐IRMS), the method also presents the possibility of collecting the CO₂ generated during CF‐IRMS: this would allow the subsequent dating by ¹⁴C‐AMS of individual amino acids isolated from archaeological samples.     

Personal Security and Electoral Demobilization: A Comparative Analysis

This research examines the link between the encroachment upon personal security and political participation among women in Lebanon and Morocco. Analyses are performed on the Status of Women in the Middle East and North Africa Survey conducted by the International Foundation for Electoral Systems (IFES) from August 2009 to June 2010. Results indicate a strong link between perceptions of personal security in both public and private spheres, and the propensity to vote. The results show that not feeling free to leave the home and experiencing regular sexual harassment in the public sphere curtail women's likelihood to vote. These findings have profound implications for shaping policies as they apply to women in the transitioning Middle East.     

Language Policy and Nationalism in Wales: A Comparative Analysis

Abstract. This article is based on research conducted between 1987 and 1994. It argues that the Conservative government has increasingly used the Welsh language as an instrument of political accommodation within Wales which has served to highlight the complexity of the relationship between the aims of the language movement and the aspirations of nationalists. The comparative perspective explores the situation in Canada and the Republic of Ireland and considers the proposition that the ‘depoliticisation’ of language in the context of the politics of nationalism is beneficial to a minority language.     

中德应急管理体制比较

德国的应急管理已经有机融入到社会管理的各个层面,几乎无处不在。同时,政府的职能定位明确,与社会和公民的关系清晰。德国应急管理的经验拓宽了我国应急管理的思路,给我们一定的启示和借鉴。     

The Water Framework Directive: A New Directive for a Changing Social,Political and Economic European Framework

This article examines the intricate process of developing the European Union's Water Framework Directive. It sees the Directive as a response to recent economic, political and social changes related to water management, including the shift from government to governance, the liberalization of water markets and the emergence of a new set of institutions, actors, etc. and their respective relations (i.e. social capital). The article focuses on the key points of disagreement between the Council of Ministers and the European Parliament that threatened to prevent the Directive from being materialized and interprets this controversy as the culmination of conflicting interests between different actors at the local, national and European levels. Finally, it asserts the increasingly important role of the nation state in the decision-making and implementation of the Directive and sets this against recent arguments about the death of the State.     

中美旅游目的地营销比较

中国正在努力实现从世界旅游大国向世界旅游强国的跨越,迫切需要把市场营销提高到国际先进水平。本文通过对中关两大旅游目的地之间营销模式及13个营销要点的对比分析,通过对美国DMO营销趋势的考察,提出中国旅游营销必须借鉴世界先进国家的8个领域：营销专业化,加大营销投入,加强网络营销,调整营销战略,注重游客市场调查,提高目的地服务质量,改进培训与教育,建立专业营销机构与加强跨地区协作。     

Communitarian Neighborhoods and Religious Minorities in Iran: A Comparative Analysis

This paper analyzes the urban insertion of some Iranian religious minorities, focusing on three communities, all of which lived in separated neighborhoods: Armenians of Isfahan, Jews of Shiraz, and Zoroastrians of Yazd. After a discussion on the link between non-Muslims' spatial and social isolation and Iranian culture and Shiism, the paper goes on to describe the organization of these neighborhoods during the recent centuries and the recent—and contrastive—evolutions of two of them: while Zoroastrians view their quarter like a humiliating ghetto, of which they wish to go out, Armenians are proud of it, and try up till now to jealously preserve their isolation.     

Ethnic Inequalities in the Public Sector: A Comparative Analysis

This article uses empirical data to discuss the links between ethnicity, inequality and governance in a framework that divides countries according to their levels of ethnic polarization. It makes three main arguments. First, types of diversity, not the existence of diversity per se, explain potentials for conflict or cohesion in multiethnic societies. Ethnic cleavages are configured differently in different social structures and are less conflictual in some countries than in others. Second, relative balance has been achieved in the public sectors of countries that are highly fragmented or those with ethnicity‐sensitive policies, but not in those with ethnicity‐blind policies. Third, the article is critical of institutional approaches to conflict management that underplay background conditions in shaping choices. Consociational arrangements may not be relevant in unipolar ethnic settings or fragmented multiethnic societies, where governments may be ethnically inclusive under democratic conditions. They seem unavoidable in ethnic settings with two or three main groups or in settings with strong ethnic/regional clusters.     

Resolving Water Conflicts: A Comparative Analysis of Interstate River Compacts

This paper examines compacts used by U.S. western states to engage in shared governance of interstate rivers. Compacts are viewed as inflexible, rigid governance structures incapable of responding to changing environmental and institutional settings because of the use of unanimity rules and the inability to directly regulate water users. Using data from a study of 14 western interstate river compacts we examine this claim. In particular, we explore the response of compacts to water conflicts. We find that members of compacts, closely related water agencies, and compact governments are capable of responding to conflicts. To better understand this finding, we identify the conditions under which compacts are likely to address conflicts, as well as the types of conflict solutions compact governments adopted.     

Creole Architecture: A Comparative Analysis of Upper and Lower Louisiana and Saint Domingue

What factors accounted for variations in architectural traditions in the French colonial settlements of the New World? This paper tests several of the propositions of culture theory against what is known of the process of tradition-formation in the French vernacular architecture of the Illinois Country, Lower Louisiana, and the Caribbean colony of Saint Domingue. It explores the extent to which generalized cultural processes such as preadaptation, founder’s effect, and cultural syncretism account for changes in the forms of typical settler’s houses.     

Immigrant Inclusion in the Safety Net: A Framework for Analysis and Effects on Educational Attainment

Across states, there is substantial variation in the degree to which immigrants and their children are offered public assistance. We present a theoretical framework for analyzing the effects of policy decisions about immigrant inclusion. We apply the framework to investigate the effect of the state safety net on educational attainment. We focus on the years following welfare reform in 1996, when states gained considerable autonomy over welfare policy, including decisions about the eligibility of immigrant residents. Leveraging state‐level data from before and after reform, we estimate a difference‐in‐difference model to identify the effect of variation in immigrant inclusivity on educational attainment. We find that when states broaden the inclusivity of the social safety net to immigrants, young Latinos are more likely to graduate from high school. This effect is present beyond the group of Latino residents who receive additional benefits, suggesting that policy decisions about immigrants spill over to broader communities and communicate broader messages about social inclusion to racial and ethnic groups. We find similar patterns among Asian youth, but not among black and non‐Hispanic white youth. We conclude that immigrant inclusion has consequences for the life prospects of the growing population of youth in high‐immigrant ethnic groups.