Economics, Behavioral Biology, and Law

This article compares the relevance to law of two unexpectedly similar fields: economics and behavioral biology. It first examines the assumptions, core concepts, methodological tenets, and emphases of the two fields. It then compares the interdisciplinary fields of law and economics, on one hand, with law and behavioral biology, on the other-highlighting not only important similarities but also important differences. The article subsequently explores ways that biological perspectives on human behavior may, among other things, improve economic models and the behavioral insights they generate. The article concludes that although there are important differences between the two fields, the overlaps between economics and biology warrant even greater congress between these two disciplines, and expanded exchange between the legal thinkers interested in each of them

X-ray and Radio Interactions in the Cores of Cooling Flow Clusters

We present high resolution ROSAT x-ray and radio observations of three cooling flow clusters containing steep spectrum radio sources at their cores. All three systems exhibit strong signs of interaction between the radio plasma and the hot intracluster medium. Two clusters, A133 and A2626, show enhanced x-ray emission spatially coincident with the radio source whereas the third cluster, A2052, exhibits a large region of x-ray excess surrounding much of the radio source. Using 3-D numerical simulations, we show that a perturbed jet propagating through a cooling flow atmosphere can give rise to amorphous radio morphologies, particularly in the case where the jet was ``turned off'' and allowed to age passively. In addition, the simulated x-ray surface brightness produced both excesses and deficits as seen observationally.Comment: 25 pages, 10 figures, accepted for publication in A

Serologic Surveillance of Selected Viral and Bacterial Pathogens in South Carolina’s Feral Swine Population

Feral swine (Sus scrofa) are considered an invasive species that is comprised of the wild descendants of domestic swine, European wild boar, and hybrids of these two species. Feral swine were historically associated with the major river drainages in Coastal South Carolina. However, natural range expansion and human release and relocation of feral swine appear to be sources of their expansion into areas not previously occupied. Although an exact estimate of feral swine population numbers is not available, in 2006 feral swine were reported in 42 of 46 South Carolina counties, compared to 46 of 46 counties reporting feral swine activity in 2011. Feral swine can serve as reservoirs for a number of diseases including pseudorabies, swine brucellosis (Brucella spp.), porcine respiratory and reproductive syndrome and porcine circovirus which may be passed to livestock and, in some cases, native wildlife and humans. The National Wildlife Disease Program within the US Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services conducted serologic surveys for pseudorabies virus, brucellosis, porcine circovirus, and porcine respiratory and reproductive syndrome virus in South Carolina feral pig populations from 2007- 2012. During that period, we opportunistically sampled and collected serum from 545 feral pigs. Overall, 111 of 544 (20.40%) animals tested positive for antibodies to pseudorabies, 87 of 545 (15.96%) animals tested positive for antibodies to brucellosis, 171 of 306 (55.88%) animals tested positive for antibodies to porcine circovirus, and seven of 312 (2.24%) animals tested positive for antibodies to porcine respiratory and reproductive syndrome. Positive cases of pseudorabies and brucellosis were spatially limited to populations closely associated with the major river drainages in Coastal South Carolina. These positive cases of pseudorabies and brucellosis were found in areas of long established pig populations. The seven positive cases of porcine respiratory and reproductive syndrome were limited to one geographic cluster within the Congaree and Wateree river confluence and two clusters along the PeeDee River Drainage. These clusters of seropositive cases indicate a more geographically localized distribution of porcine respiratory and reproductive syndrome. Interestingly, positive cases of porcine circovirus appeared to be evenly distributed across all sample locations in South Carolina. A more spatially and temporally consistent sampling strategy is recommended to investigate linear spread of pathogens along river drainages and throughout the feral swine population in South Carolina

Using Lyman-α\alpha transits to constrain models of atmospheric escape

Lyman-$\alpha$ transits provide an opportunity to test models of atmospheric escape directly. However, translating observations into constraints on the properties of the escaping atmosphere is challenging. The major reason for this is that the observable parts of the outflow often comes from material outside the planet's Hill sphere, where the interaction between the planetary outflow and circumstellar environment is important. As a result, 3D models are required to match observations. Whilst 3D hydrodynamic simulations are able to match observational features qualitatively, they are too computationally expensive to perform a statistical retrieval of properties of the outflow. Here, we develop a model that determines the trajectory, ionization state and 3D geometry of the outflow as a function of its properties and system parameters. We then couple this model to a ray tracing routine in order to produce synthetic transits. We demonstrate the validity of this approach, reproducing the trajectory of the outflows seen in 3D simulations. We illustrate the use of this model by performing a retrieval on the transit spectrum of GJ 436 b. Our model constrains the sound speed of the outflow $\gtrsim 10 \text{ km s}^{-1}$, indicating that we can rule out core-powered mass loss as the mechanism driving the outflow for this planet. The bound on planetary outflow velocity and mass loss rates are consistent with a photoevaporative wind

High-dose intravenous pamidronate for metastatic bone pain.

The bisphosphonates are able to relieve pain from metastatic bone disease and, when given intravenously, may promote bone healing of lytic metastases. In this study, the aim was to assess the acute effects of a single 'high-dose' intravenous treatment with pamidronate on pain, mobility, analgesic consumption and quality of life (QOL). Thirty-four normocalcaemic patients with painful progressing bone metastases (22 from breast, five prostate and seven others) received a single intravenous infusion of 120 mg of pamidronate as palliative therapy. No other systemic therapy or drugs known to influence bone metabolism were administered during the study. Patients' subjective response to treatment was assessed weekly with a pain questionnaire recording a composite of pain intensity, mobility, performance status and analgesic consumption. In addition, patients completed the Rotterdam Symptom Check List (RSCL) for measurement of QOL and a mobility questionnaire. The mean reduction in the pain questionnaire score (recorded on at least two occasions) was 25% [standard error (s.e.) 3%, range 0-75%]. Twenty patients (59%) showed a > or = 20% improvement and were classified as responders. The median duration of symptomatic response was 12 (range 4-24 +) weeks. The responding patients showed a reduction in RSCL score (improvement in QOL) from 35% before treatment to 27% at 6 weeks, but no significant improvement was noted in non-responders. Twenty-one patients were retreated with pamidronate when their symptoms deteriorated again. Eight out of 15 responders showed a second reduction in pain score of > or = 20%, but this was not seen in any of the six non-responders. Five patients have remained well with no additional treatment for their disease other than repeat infusions of pamidronate every 3-6 months. Treatment was well tolerated. Eight (24%) experienced fever after the first treatment only, and four had asymptomatic, biochemical evidence of hypocalcaemia. The acute inhibition of osteoclastic bone resorption induced by a single high-dose treatment with pamidronate can provide useful palliation for patients with bone metastases. Responding patients may be retreated as symptoms dictate to good effect. We are currently running a phase III double-blind trial with high-dose pamidronate for progressive painful metastatic bone disease to exclude any placebo effect and observer bias

Garden varieties: how attractive are recommended garden plants to butterflies?

One way the public can engage in insect conservation is through wildlife gardening, including the growing of insect-friendly flowers as sources of nectar. However, plant varieties differ in the types of insects they attract. To determine which garden plants attracted which butterflies, we counted butterflies nectaring on 11 varieties of summer-flowering garden plants in a rural garden in East Sussex, UK. These plants were all from a list of 100 varieties considered attractive to British butterflies, and included the five varieties specifically listed by the UK charity Butterfly Conservation as best for summer nectar. A total of 2659 flower visits from 14 butterfly and one moth species were observed. We performed a principal components analysis which showed contrasting patterns between the species attracted to Origanum vulgare and Buddleia davidii. The “butterfly bush” Buddleia attracted many nymphalines, such as the peacock, Inachis io, but very few satyrines such as the gatekeeper, Pyronia tithonus, which mostly visited Origanum. Eupatorium cannibinum had the highest Simpson’s Diversity score of 0.75, while Buddleia and Origanum were lower, scoring 0.66 and 0.50 respectively. No one plant was good at attracting all observed butterfly species, as each attracted only a subset of the butterfly community. We conclude that to create a butterfly-friendly garden, a variety of plant species are required as nectar sources for butterflies. Furthermore, garden plant recommendations can probably benefit from being more precise as to the species of butterfly they attract