In the context of a validation server, or more general PKI server, it could be interesting to give the server the possibility to check whether a certain public key was used. We investigate here some possibilities. We also present an escrow system as an application of the technology.

Urban poverty has been the subject of sociological and political debate for more than a century. In this article I examine theories of urban poverty and their place in American housing policy. I first discuss theories that have arisen out of the sociological and policy discourse on urban poverty and the research that supports and challenges these theories. I then review current public housing i...

In this paper we present a non-transferable anonymous credential system that is based on the concept of a chameleon certificate. A chameleon certificate is a special certificate that enjoys two interesting properties. Firstly, the owner can choose which attributes of the certificate to disclose. Moreover, a chameleon certificate is multi-show in the sense that several uses of the same chameleon...

BACKGROUND China began to implement the national medical and health system and public hospital reforms in 2009 and 2012, respectively. Anhui Province is one of the four pilot provinces, and the medical reform measures received wide attention nationwide. The effectiveness of the above reform needs to get attention. This study aimed to master the efficiency and productivity of county-level public...

Facilitating community action is a key goal of health promotion. This paper describes a public health advocacy framework. It then presents a case study of its application for planning community action by a community alliance concerned about increased heavy traffic on roads through a small regional city in the South West region of Western Australia. The case study illustrates defining the public...

The aim of this study was to analyze the formulation and preliminary developments of a public policy to control violence in Salvador, Bahia State, Brazil. The study's theoretical reference was the cycle of public policies and contributions by 'rational choice'. The public policy analyzed here reached the first three levels of the political decision-making process: the issue was placed on the pu...

Transparency has become a buzzword in contemporary literature of Planning. However, it is NOT a well-constrained concept. This term is defined differently from different fundamental positions (Sen 1999; Stiglitz 2003; Florini 2007). Public private partnerships in infrastructure development are popularly known for offering transparent planning process. This study argues that transparency is narr...

Psychological science has come to play an increasingly important role in the legal system by informing the court through expert testimony and by shaping public policy. In recent years, psychological research has driven a movement to reform the procedures that police use to obtain eyewitness identification evidence. This reform movement has been based in part on an argument suggesting that recom...

Central to the controversy over the new immigration is the worry that it has promoted an increase in the level of poverty and welfare utilization among immigrants. This study documents and explains immigrant-native trends and differentials in poverty and public assistance utilization during the period from 1960-1980. Results show that there is ample evidence that the level of poverty among im...

The call for community-based participatory research approaches to address cancer health disparities is increasing as concern grows for the limited effectiveness of existing public health practice and research in communities that experience a disparate burden of disease. A national study of participatory research projects, Research for Improved Health, funded by the National Institutes of Health...