Análise exploratória do modelo de simulação de rodovias de pista simples do VISSIM

A modelagem de rodovias de pista simples tem sido incorporada em simuladores de tráfego. Como a lógica de simulação em rodovias de pista simples teve que se adequar a outros submodelos comportamentais dos simuladores, como o de car-following e o de mudança de faixas, surge a necessidade de avaliar se a modelagem desse tipo de rodovia tem sido realizada adequadamente. Este artigo, portanto, teve como meta realizar essa análise para o VISSIM, devidamente calibrado por meio de dados de campo e com um Algoritmo Genético. Foram analisadas as variações de duas medidas de desempenho, velocidade média de viagem (ATSd) e número de ultrapassagens (NUd), de acordo com a variação das zonas de ultrapassagens proibidas, da porcentagem de veículos pesados e do fluxo de tráfego unidirecional. Não foram observadas grandes diferenças quando foram avaliados os valores de ATSd, ao contrário do que ocorreu com NUd.A modelagem de rodovias de pista simples tem sido incorporada em simuladores de tráfego. Como a lógica de simulação em rodovias de pista simples teve que se adequar a outros submodelos comportamentais dos simuladores, como o de car-following e o de mudança de faixas, surge a necessidade de avaliar se a modelagem desse tipo de rodovia tem sido realizada adequadamente. Este artigo, portanto, teve como meta realizar essa análise para o VISSIM, devidamente calibrado por meio de dados de campo e com um Algoritmo Genético. Foram analisadas as variações de duas medidas de desempenho, velocidade média de viagem (ATSd) e número de ultrapassagens (NUd), de acordo com a variação das zonas de ultrapassagens proibidas, da porcentagem de veículos pesados e do fluxo de tráfego unidirecional. Não foram observadas grandes diferenças quando foram avaliados os valores de ATSd, ao contrário do que ocorreu com NUd

Unlocking the potential of big data to support tactical performance analysis in professional soccer: A systematic review

In professional soccer, increasing amounts of data are collected that harness great potential when it comes to analysing tactical behaviour. Unlocking this potential is difficult as big data challenges the data management and analytics methods commonly employed in sports. By joining forces with computer science, solutions to these challenges could be achieved, helping sports science to find new insights, as is happening in other scientific domains. We aim to bring multiple domains together in the context of analysing tactical behaviour in soccer using position tracking data. A systematic literature search for studies employing position tracking data to study tactical behaviour in soccer was conducted in seven electronic databases, resulting in 2338 identified studies and finally the inclusion of 73 papers. Each domain clearly contributes to the analysis of tactical behaviour, albeit in - sometimes radically - different ways. Accordingly, we present a multidisciplinary framework where each domain's contributions to feature construction, modelling and interpretation can be situated. We discuss a set of key challenges concerning the data analytics process, specifically feature construction, spatial and temporal aggregation. Moreover, we discuss how these challenges could be resolved through multidisciplinary collaboration, which is pivotal in unlocking the potential of position tracking data in sports analytics.Algorithms and the Foundations of Software technolog

Green tea glycolic extract-loaded liquid crystal systems: development, characterization and microbiological control

ABSTRACT Liquid crystal systems (LCSs) have interesting cosmetic applications because of their ability to increase the therapeutic efficiency and solubility of active ingredients. The aim of the present research was to develop green tea glycolic extract-loaded LCSs, to characterize and to perform microbiological control. The ternary phase diagram was constructed using polysorbate 20, silicone glycol copolymer (SGC) - DC 193(r), and distilled water with 1.5% glycolic green tea extract. The systems were characterized by polarized light microscopy. Formulations selected were characterized as transparent viscous systems and transparent liquid system indicated mesophases lamellar structure. The results of the microbiological analysis of mesophilic aerobic microorganisms (bacteria and fungi) revealed that the above formulation showed a biologic load <10 CFU/mL in all samples. In conclusion, liquid crystalline systems that have presented formation of a lamellar mesophases were developed. Furthermore, the formulation and products tested presented the adequate microbiological quality in accordance with official recommendations

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector

A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results