How are party coalitions shaped and reshaped? Elected officials choose coalitions to win elections, but they must work to maintain those coalitions. Non-elected political actors, advancing an ideology at odds with the party coalition, can undermine the party. This article explores this possibility in the case of partisan change on slavery in the Antebellum United States. Intellectuals in 1850 d...

Research has shown that historical levels of slavery have an adverse impact on contemporary economic development in the U.S., including income inequality and education. This paper assesses the relationship between slavery and intergenerational mobility, both in the past and at present. We first use the IPUMS Linked Representative Samples between 1860-1910 to show two things: 1) intergenerationa...

As we turn to the New Testament we confront many problems associated with its attitude to slavery. There is no programme for a new social order, as we might have expected: no suggestion that slaves ought to be freed. Indeed, we could be forgiven for believing that throughout the New Testament the institution is bolstered up by the apostolic exhortations to masters and slaves (Eph 6:5-9; Col 3:2...

Pocket switched networks (PSNs) take advantage of human mobility to distribute data. Investigations on real-world trace data indicate that human mobility follows a simple reproducible pattern: a human being usually visits a few places at high frequencies. These most frequently visited places form the home of a node, which is exploited in this paper to design two HomE based ROuting (HERO) algori...

Hemodialysis Reliable Outflow (HeRO) grafts (Merit Medical Systems, Inc, South Jordan, Utah) provide a means for access in catheter-dependent hemodialysis patients but typically require several weeks for tissue incorporation. Modifying the HeRO graft with an ACUSEAL graft (W. L. Gore & Associates, Newark, Del) can allow immediate cannulation, thus reducing catheter dependence time and its assoc...

The Prisoner Dilemma has basically two known type of evolutive answers that allow cooperation among individuals. One proposes cooperation is possible among close relatives. The other is a strategy on when to cooperate and when not to, according to the actions of the other players. An example of these strategies is playing tit-fortat. This paper proposes a third and completely different solution...

The existence of multiple decision-makers and goals, spatial and non-linear forest management objectives and the combinatorial nature of forest planning problems are reasons that support the use of heuristic optimisation algorithms in forest planning instead of the more traditional LP methods. A heuristic is a search algorithm that does not necessarily find the global optimum but it can produce...

AIM To compare the shaping ability of progressive versus constant taper shaft instruments in curved root canals of extracted human teeth. METHODOLOGY A total of 40 root canals of mandibular molars with curvatures ranging between 20 degrees and 40 degrees were divided into two groups of 20 canals each and embedded in a muffle system. The root canals sectioned horizontally at three levels befor...