Software has become so complex that it is increasingly hard to have a complete understanding of how a particular system will behave. Web applications, their user interfaces in particular, are built with a wide variety of technologies making them particularly hard to debug and maintain. Reverse engineering techniques, either through static analysis of the code or dynamic analysis of the running application, can be used to help gain this understanding. Each type of technique has its limitations. With static analysis it is difficult to have good coverage of highly dynamic applications, while dynamic analysis faces problems with guaranteeing that generated models fully capture the behavior of the system. This paper proposes a new hybrid approach for the reverse engineering of web applications' user interfaces. The approach combines dynamic analyzes of the application at runtime, with static analyzes of the source code of the event handlers found during interaction. Information derived from the source code is both directly added to the generated models, and used to guide the dynamic analysis.
Neotropical Entomology 37(3): 349-351 (2008) Uso de Manta de Poliéster como Substrato Novo para Criação de Larvas de Cochliomyia hominivoraxCoquerel (Diptera: Calliphoridae)RESUMO -A utilização de manta de poliéster como substrato para a criação de larvas de Cochliomyia hominivorax Coquerel em dieta líquida foi comparada com dieta à base de carne moída. Não foram verifi cadas diferenças na média dos pesos de larvas de terceiro estágio e pupas, número de pupas formadas, emergência e efi ciência de criação. Os resultados foram obtidos por quatro gerações consecutivas, não demonstrando interferência em nenhum parâmetro biológico avaliado. Propõe-se que manta de poliéster pode ser utilizada como suporte para a criação laboratorial de C. hominivorax em dieta líquida, reduzindo os custos de criação, uma vez que pode ser reutilizada.PALAVRAS-CHAVE: Mosca da bicheira, criação larval, matriz sintética, dieta líquida ABSTRACT -Polyester pad was utilized as solid support for rearing Cochliomyia hominivorax Coquerel larvae in liquid diet and compared with the ground meat diet. There were no signifi cant differences in the mean third instar larvae and pupal weights, number of pupae, emergence and rearing effi ciency. The tests were conducted through four consecutive generations, presenting no detectable effect in any of the life history parameters. We propose that the polyester pad can be used as solid support for rearing C. hominivorax larvae in liquid diets and can be reutilized reducing the costs of mass rearing.
Complex flows involving waves and free-surfaces occur in several problems in hydrodynamics, such as fuel or water sloshing in tanks, waves breaking in ships, offshore platforms motions, wave action on harbors and coastal areas. The computation of such highly nonlinear flows is challenging since waves and free-surfaces commonly present merging, fragmentation and cusps, leading to the use of interface capturing Arbitrary Lagrangian-Eulerian (ALE) approaches. In such methods the interface between the two fluids is captured by the use of a marking function that is transported in a flow field. In this work we simulate these problems with a 3D incompressible SUPG/PSPG parallel edge-based finite element flow solver associated to the Volume-of-Fluid (VOF) method. The hyperbolic equation for the transport of the marking function is also solved by a fully implicit parallel edge-based SUPG finite element formulation. Global mass conservation is enforced adding or removing mass proportionally to the absolute value of the normal velocity at the interface. All those techniques were successfully implemented in a computational code, which has been suitably used to carry out several studies. The performance and accuracy of the proposed solution method is tested in the simulation waves and in the interaction between waves and a semisubmersible structure. Results count on the establishment of a relaxation zone close to the domain outflow, which partially absorbs incoming waves, avoiding their reflection.
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