Fluorescence of a Natural Fluorophore as a Key to Improve Fingerprint Contrast Image

The optical and morphological properties of resveratrol were investigated. This nontoxic fluorescent natural material, emitting in the visible blue light, was used as an optical marker, enabling the enhancement of the image contrast coming from relief pictures marked on challenging surfaces. By applying appropriated imaging softwares, this marker was verified to be very useful in the latent fingerprint recognition deposited on different wood surface types, mainly those with high level of roughness, where conventional forensic materials do not allow effective fingerprint image visualization.     

The Quality of Terror

I present a model of the interaction between a government, a terrorist organization, and potential terrorist volunteers in which, as a result of an endogenous choice, individuals with low ability or little education are most likely to volunteer to join the terrorist organization. However, the terrorist organization screens the volunteers for quality. Consequently, the model is consistent with two seemingly contradictory empirical findings. Actual terrorist operatives are not poor or lacking in education. And yet lack of economic opportunity and recessionary economies are positively correlated with terrorism. The model also endogenizes the effect of government counterterrorism on mobilization. Government crackdowns have competing effects on mobilization: they decrease the ability of terrorists to carry out effective attacks (making mobilization less attractive), and they foment ideological opposition to the government and impose negative economic externalities (making mobilization more attractive). This provides conditions under which government crackdowns increase or decrease mobilization.     

Monotone Comparative Statics for Models of Politics

We elucidate a powerful yet simple method for deriving comparative statics conclusions for a wide variety of models: Monotone Comparative Statics ( Milgrom and Shannon 1994 ). Monotone comparative static methods allow researchers to extract robust, substantive empirical implications from formal models that can be tested using ordinal data and simple nonparametric tests. When these methods apply, they can replace a diverse range of more technically difficult mathematics (facilitating richer, more realistic models), assumptions that are hard to understand or justify substantively (highlighting the political intuitions underlying a model's results), and a complicated set of methods for extracting implications from models. We present an accessible introduction to the central monotone comparative statics results and a series of practical tools for using these techniques in applied models (with reference to original sources, when relevant). Throughout we demonstrate the techniques with examples drawn from political science .     

Brazilian Regional Leadership Revisited: Testing the Long-Term Determinants of South American Followership (1995–2015)

Over the last twenty years, Brazil has staked successive claims to regional leadership, with varying explicitness and unclear success. What factors explain the acceptance or rejection of such claims by South American countries? This article summarises the literature on regional powers and frames regional powerhood as arising from geographical belonging, resources, and will to lead; and leadership/followership as stemming from exclusivity, hierarchy/influence, consensus, and provision. By analysing panel data on Brazil and South America from 1995 to 2015, the study concludes that Brasilia enjoyed higher followership in situations characterised by high exclusivity and consensus, and low hierarchy and provision. These conditions were present in South America in the 1990s, thus rendering that decade more receptive to Brazilian leadership.     

Leave them kids alone! National exams as a political tool

Public Choice - In this paper, we show how results in state administered university entrance standardized exams in Portugal are sensitive to the electoral cycle. Using individual data for all...     

Trade liberalisation in Brazil: Creating or exporting jobs?

Using the growth accounting and factor content approaches, this article looks at the impact of trade liberalisation on the structure and level of employment in Brazil over the 1990–97 period. The results support the argument that trade liberalisation in developing countries have a negative short‐term impact on employment — relatively small in Brazil's case ‐ which tends to be outweighed, in the long run, by a more labour‐intensive output mix.     

Does participation generate democratization? Analysis of social participation by institutional means in Argentine,Brazilian and Uruguayan foreign policies

The article questions if the participation of civil society actors in foreign policy making would lead to the democratization of foreign policy processes. The analysis is based on the comparison of three foreign policy participatory initiatives – the Civil Society Consultative Council, the Social and Participative Mercosur Programme and the Dialogue and Consultation System – which currently take place in Argentina, Brazil and Uruguay, respectively. The hypothesis to be tested is that participatory institutions modify representation in foreign policy by breaking with the monopoly of the diplomatic bureaucracy in foreign policy making on regional integration. For that, we develop a comprehensive model based on social participation indicators and assess the specifics of each participatory initiative by mobilizing documental sources and conducting face-to-face interviews with key actors for each initiative. We ultimately find that the democratic nature is rather correlated with the institutional design adopted by the participatory initiative under scrutiny.     

Symposium on Replication in International Studies Research

The following symposium tackles an important debate in the field of international studies research and in social science research more broadly. Originating as presentations at the 2002 International Studies Association meetings in New Orleans, the following set of papers examines issues concerning the potential replication of research results from a number of different conceptual and technical perspectives. It also spans an array of journals and journal editors in our field that confront issues of replication on a regular basis. The interactions generated by this symposium have already led to the agreement, detailed at the end of the symposium among the four leading internations relations journals to adopt a single common replication policy. The editors of these journals challenge others to follow their lead. The Editors of ISP hope that this symposium begins a larger discussion on these issues and invites commentary from interested scholars. Lastly, I want to thank Nils Petter Gleditsch for soliciting, organizing, and coordinating the contributions to this symposium. Without his work, this project would not have come to fruition as quickly or in as insightful a fashion. Three anonymous reviewers also provided detailed comments on the entire set of articles in this symposium. We are indebted to the care and effort they gave to the project. Mark A. Boyer For the Editors of ISP     

Domestic Politics and International Relations

In reviewing the history of portions of international studies I reflect on how we might best advance knowledge. I dwell on two issues: questions of method and the urgency of refocusing our efforts on leaders and domestic affairs as the centerpiece for understanding the world of international relations. I argue that scientific progress is best made by combining three methodological approaches in our research: formal, mathematical logic to ensure internal consistency in arguments about complex and contingent relations among variables; case studies and archival research to evaluate verisimilitude between theory and action; and statistical analysis to establish the generality of the hypothesized relations among variables. Often such methodologically diverse and progressive research will best be accomplished by encouraging collaboration rather than by perpetuating the current norm of penalizing co-authorship especially among junior scholars. I offer concrete examples of advances in knowledge achieved through the employment of mathematical reasoning and statistical analysis as many have cast doubts about the substantive contributions of these particular approaches. My perspective is, of course, personal and may not be shared by many others. I set out my thoughts, therefore, with the hope that they will stimulate constructive debate and dialogue and that they will serve to integrate diverse approaches to international affairs.