Search results for " Vertical"
showing 10 items of 163 documents
Improving graphical information system model use with elision and connecting lines
2004
Graphical information system (IS) models are used to specify and design IS from several perspectives. Due to the growing size and complexity of modern information systems, critical design information is often distributed via multiple diagrams. This slows search performance and results in reading errors that later cause omissions and inconsistencies in the final designs. We study the impact of large screens and the two promising visual integration techniques of elision and connecting lines that can decrease the designers' cognitive efforts to read diagrams. We conduct a laboratory experiment using 84 computer science students to investigate the impact of these techniques on the accuracy of t…
Pseudo-diel vertical migration in zooplankton: a whole-lake 15N tracer experiment
2012
Diel vertical migration (DVM) of zooplankton is commonly considered an adaptation for feeding in food-rich and warm surface waters at night and avoiding visual predators during the day. However, the critical assessment of migration patterns frequently suggests that: (i) zooplankton may leave deeper waters with rich, deepchlorophyll layers and move into the epilimnion where food resources are lower and/or (ii) the night-time increase in epilimnetic plankton abundance is not matched by a density decrease in deeper strata. To study these discrepancies, we measured DVM of zooplankton in a 1.3-ha Spanish karst lake (Laguna del Tejo) where the phytoplankton in the deep chlorophyll layer had been …
Smart Network Selection and Packet Loss Improvement during Handover in Heterogeneous Environment
2013
BEST PAPER AWARD; International audience; Seamless Handover between networks in heterogeneous environment is essential to guarantee end-to-end QoS for mobile users. A key requirement is the ability to select the next best network. Currently, the implementation of the IEEE 802.21 standard by National Institute of Standards and Technology (NIST) considers only the signal strength as a parameter to determine the best network. In this paper, we propose including additional parameters such as available bandwidth, mobile node speed and type of network during selecting a new network to improve the QoS for mobile user's application. The results of the experiments that we performed using Network Sim…
Integrated Fuzzy Solution for Network Selection using MIH in Heterogeneous Environment
2013
ISSN: 1942-2644; International audience; Seamless handover between networks in heterogeneous environment is essential to guarantee end-to- end QoS for mobile users. A key requirement is the ability to select seamlessly the next best network. Currently, the implementation of the selection algorithm of the IEEE 802.21 standard by National Institute of Standards and Technology considers only the signal strength as a parameter to select the best destination network. In this paper, we improve the implementation of the existing selection algorithm by proposing an integrated solution to select the best destination network. Our proposed solution consists of proposing a Multi Criteria Selection Algo…
IP-Based Mobility Management and Handover Latency Measurement in heterogeneous environments
2017
International audience; One serious concern in the ubiquitous networks is the seamless vertical handover management between different wireless technologies. To meet this challenge, many standardization organizations proposed different protocols at different layers of the protocol stack. The Internet Engineering Task Force (IETF) has different groups working on mobility at IP level in order to enhance mobile IPv4 and mobile IPv6 with different variants: HMIPv6 (Hierarchical Mobile IPv6), FMIPv6 (Fast Mobile IPv6) and PMIPv6 (Proxy Mobile IPv6) for seamless handover. Moreover, the IEEE 802.21 standard provides another framework for seamless handover. The 3GPP standard provides the Access Netw…
The importance of the insular cortex for vestibular and spatial syndromes.
2020
BACKGROUND AND PURPOSE The aim of the study was to identify the neuroanatomical correlates and associations of neuropsychological syndromes after acute unilateral right-hemisphere brain lesions. The neuropsychological syndromes considered were orientation in three-dimensional space such as tilts of the subjective visual vertical or of the subjective haptic vertical, pusher syndrome, visual neglect and unawareness of paresis (anosognosia for hemiparesis). These neuropsychological phenomena have been found to occur separately or in different combinations after lesions to the right insular cortex. METHOD Magnetic resonance imaging scans were obtained from 82 patients with acute right-hemispher…
Asimetría vertical del cóndilo y rama mandibular medidas en el cone beam computed tomography (CBCT)
2018
ASIMETRÍA VERTICAL DEL CÓNDILO Y RAMA MANDIBULAR MEDIDAS EN EL CONE BEAM COMPUTED TOMOGRAPHY (CBCT) INTRODUCCIÓN: La asimetría mandibular es de gran interés desde el punto de vista odontológico, una asimetría en la mandíbula es una alteración en el desarrollo craneofacial, lo que contribuye a una desventaja en el aparato estomatognático, provocando maloclusiones, alteraciones estéticas, problemas funcionales y psicosociales, por lo que es importante su diagnóstico; se han empleado diversos medios de diagnóstico para la evaluación de la asimetría mandibular como fotografías, radiografías convencionales y actualmente tomografía computarizada de haz cónico, así mismo existe una variedad de cef…
The Grid: As a Starting Point and an End Point of Ornament
2017
Ornament was one of the key concepts in the nineteenth century discussions on architecture and decorative arts. In the beginning of the twentieth century, modernism abandoned ornament from its vocabulary. In the last decades of the twentieth century, the heritage of Modernism and its rejection of ornament were critically analyzed and ornament became a topical subject once more. Geometry played an important role in the search for rational and intellectual basis for the architecture and decorative arts in the beginning of industrial age. Arabic ornamental practice with its geometrical foundation served as one precept in searching and formulating appropriate design principles for architecture …
Desarrollo de métodos analíticos para evaluar la efectividad de cosméticos antipolución
2021
La contaminación ambiental es un problema tanto local como global de gran importancia en la actualidad. En concreto, la contaminación urbana es uno de los principales peligros para la salud humana, y en especial para la salud de la piel, lo que ha provocado un incremento de la concienciación y la preocupación con respecto a los niveles de contaminación en aire. La aparición de cosméticos antipolución, destinados a combatir estos efectos negativos sobre la salud humana, es el resultado de dicha preocupación. Sin embargo, el desarrollo de metodologías analíticas adecuadas para la evaluación de su efectividad es un gran desafío. Por ello, la presente Tesis se centra en el desarrollo de métodos…
Molecular and isotopic composition of free hydrocarbon gases from Sicily, Italy
2004
[1] Chemical and isotopic data have been used as geochemical tracers for a genetic characterization of hydrocarbon gases from a total of eleven manifestations located in Eastern and Central-Southern Sicily (Italy). The molecular analysis shows that almost all the samples are enriched in methane (up to 93.2% Vol.), with the exception of four gas samples collected around Mt. Etna showing high mantle-derived CO2 content. Methane isotope signatures suggest that these are thermogenic gases or a mixture between thermogenic gases and microbial gases. Although samples from some mud volcanoes in Southern Sicily (Macalube di Aragona) show isotope signatures consistent with a mixing model between ther…