Inner-city birth rates following enactment of the Minnesota parental notification law

An increase in birth rates to Minneapolis minors following the enactment of a parental notification law was examined. A well-publicized link between increasing birth rates and the law is shown to have been premature. Birth, abortion, and population data by age, race, and region suggest that the increasing birth rate in Minneapolis was not related to parental notification, but rather to a growing racial minority population.Preparation of this article was supported in part by an Aldeen Grant from Wheaton College. The authors wish to thank the Minnesota Center for Health Statistics, particularly James Wigginton and Carol Vargas, for their considerable work to provide birth, abortion, and population data in a form suitable for the current analysis. The authors also thank Americans United for Life for purchasing the data and providing them to the authors.     

Ideas, Interests, and Institutions: Challenging the Property Rights Paradigm in Botswana

Recent work in international studies and comparative politics scrutinizes the relative importance of ideas, interests, and institutions as sources of policy change. A growing body of scholarship identifies ideas as the main causal factors, influencing perceived interests as well as perceived policy options. Others contend that policies can best be understood as products of institutions. Neither explanation can account for both policy choice by politicians and the implementation strategies of administrators. In Botswana, the use of professional criteria for hiring and advancement encourages adherence to international professional norms within the bureaucracy, but electoral competition gives politicians more reason to be attentive to local political concerns. The institutions that define relations of authority among actors with different motivations shape the outcomes of policy choice and implementation. Institutions influence the attentiveness of policy-makers to ideas when making decisions, the degree of attention particular policy-makers give to ideas from particular sources, and the degree of acceptance that ideas must achieve to affect policy. Better evaluations of political development can be achieved through attentiveness to the mix of actors involved in policy decisions, the diversity of institutions and ideas that affect their policy preferences, and the relations of authority that shape their relative influence over policy choice and implementation.     

Portable high‐resolution automated 3D imaging for footwear and tire impression capture

The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners.