Escape for Boone & Crocket

Eber Crocket is the owner of Boone & Crocket Trapper Supply (B&C). He feels like the environmental forces that are impacting his business are like a trap slowing closing on him. He is considering ideas to improve his store’s profitability. Demand for furs as fashion goods is a multi-million dollar industry. Twenty percent of this demand is met by wild fur which is harvested by trappers. Trapping suppliers serve as the middleman between small individual trappers and auction houses. These auction houses collect the raw fur pelts from trappers and trapping stores and hold them until one of their auctions. Members of the international fashion community are the principle buyers of wild fur. These firms are involved in the tanning, finishing and design work needed to turn a fur pelt into a finished garment. The fur industry is impacted by many environmental forces. Among them, sociocultural, regulatory and economic forces are key. Boone & Crocket Trapping Supply is small family-owned business located in central Minnesota It offers a wide selection of trapping-related goods and services. The majority of B&Cs profits come from the sale of traps, baits and other goods. The remaining profit comes from fur handing and auction fur sales. Your friend Eber wants your perspective on some of the new product and service ideas he is considering to make B&C more profitable. His ideas are to produce trapping baits, expand the condition of furs B&C buys, differentiate the store’s product line, enter the nuisance animal control business, or become involved in trapper’s education

Two-level system with a thermally fluctuating transfer matrix element: Application to the problem of DNA charge transfer

Charge transfer along the base-pair stack in DNA is modeled in terms of thermally-assisted tunneling between adjacent base pairs. Central to our approach is the notion that tunneling between fluctuating pairs is rate-limited by the requirement of their optimal alignment. We focus on this aspect of the process by modeling two adjacent base pairs in terms of a classical damped oscillator subject to thermal fluctuations as described by a Fokker-Planck equation. We find that the process is characterized by two time scales, a result that is in accord with experimental findings.Comment: original file is revtex4, 10 pages, three eps figure

Some Like It Fat: Comparative Ultrastructure of the Embryo in Two Demosponges of the Genus Mycale (Order Poecilosclerida) from Antarctica and the Caribbean

0000-0002-7993-1523© 2015 Riesgo et al. This is an open access article distributed under the terms of the Creative Commons Attribution License [4.0], which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The attached file is the published version of the article

Source localization of reaction-diffusion models for brain tumors

We propose a mathematically well-founded approach for locating the source (initial state) of density functions evolved within a nonlinear reaction-diffusion model. The reconstruction of the initial source is an ill-posed inverse problem since the solution is highly unstable with respect to measurement noise. To address this instability problem, we introduce a regularization procedure based on the nonlinear Landweber method for the stable determination of the source location. This amounts to solving a sequence of well-posed forward reaction-diffusion problems. The developed framework is general, and as a special instance we consider the problem of source localization of brain tumors. We show numerically that the source of the initial densities of tumor cells are reconstructed well on both imaging data consisting of simple and complex geometric structures

O desastre de Mariana/MG : um estudo de caso na perspectiva das alterações legislativas ambientais

A fim de contribuir com o caráter interdisciplinar e prático da pesquisa concretizando argumentos com base no estudo de caso do rompimento da barragem no município de Mariana/MG, o artigo visa ampliar a discussão sobre o tratamento legislativo brasileiro às demandas ambientais e a necessidade existente de fiscalização e cumprimento das leis. Há um projeto de lei tramitando no Congresso Nacional para modificar a regulamentação legal vigente sobre licenciamento ambiental e algumas tentativas de alteração do Código de Mineração de 1967. Será que as mudanças legislativas trariam um tratamento legal diferente para o desastre de Mariana? O artigo conclui que não adiantam mudanças legislativas para garantir responsabilidade ambiental, se os interesses políticos e econômicos não estiverem alinhados ao cumprimento das leis, à preservação dos recursos naturais e à qualidade da vida humana