3 resultados para TSE-taudit

em Digital Commons at Florida International University


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 Guatemala is not a failed state and is unlikely to become one in the near future. Although the state currently fails to provide adequate security to its citizens or an appropriate range of effective social programs, it does supply a functioning electoral democracy, sound economic management, and a promising new antipoverty program, My Family Progresses (MIFAPRO).  Guatemala is a weak state. The principal security threats represented by expanding Mexican drug trafficking organizations (DTOs), criminal parallel powers, and urban gangs have overwhelmed the resources of the under-resourced and compromised criminal justice system. The UN-sponsored International Commission against Impunity in Guatemala (CICIG), however, has demonstrated that progress against organized crime is possible.  The principal obstacles to strengthening the Guatemalan state lie in the traditional economic elite’s resistance to taxation and the venal political class’ narrow focus on short-term interests. Guatemala lacks a strong, policyoriented, mass-based political party that could develop a coherent national reform program and mobilize public support around it.  The United States should strengthen the Guatemalan state by expanding the Central America Regional Security Initiative (CARSI) and by strongly supporting CICIG, MIFAPRO, and the Supreme Electoral Tribunal (TSE).

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The purpose of this paper is to present an alternate framework for evaluating strategic decisions of hospitality businesses in developing nations, particularly small- and medium-sized enterprises (SMEs). While strategy literature is extensive and diverse, it remains focused on developed nation contexts. By default, so is the case with hospitality strategy literature. This has created a paucity of research for hospitality businesses in developing nations; these businesses are largely SMEs in dynamic environments seldom similar to the ones in developed nations. Therefore, the proposed framework emphasizes the role of environment, and its relationship to strategic choice, resource allocation, and strategy evaluation. A set of research questions is also proposed.

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Topoisomerase inhibitors are effective for antibacterial and anticancer therapy because they can lead to the accumulation of the intermediate DNA cleavage complex formed by the topoisomerase enzymes, which trigger cell death. Here we report the application of a novel enzyme-based high-throughput screening assay to identify natural product extracts that can lead to increased accumulation of the DNA cleavage complex formed by recombinant Yersinia pestistopoisomerase I as part of a larger effort to identify new antibacterial compounds. Further characterization and fractionation of the screening positives from the primary assay led to the discovery of a depside, anziaic acid, from the lichen Hypotrachyna sp. as an inhibitor for both Y. pestis and Escherichia colitopoisomerase I. In in vitro assays, anziaic acid exhibits antibacterial activity against Bacillus subtilis and a membrane permeable strain of E. coli. Anziaic acid was also found to act as an inhibitor of human topoisomerase II but had little effect on human topoisomerase I. This is the first report of a depside with activity as a topoisomerase poison inhibitor and demonstrates the potential of this class of natural products as a source for new antibacterial and anticancer compounds.