Search results for "virtu"

Chromostereopsis in "virtual reality" adapters with electrically tuneable liquid lens oculars

2016

Chromostereopsis can be sight and feel in “Virtual Reality” adapters, that induces the appearance of color dependant depth sense and, finally, combines this sense with the source conceived depth scenario. Present studies are devoted to investigation the induced chromastereopsis when using adapted “Virtual Reality” frame together with mobile devices as smartphones. We did observation of composite visual stimuli presented on the high spatial resolution screen of the mobile phone placed inside a portable “Virtual Reality” adapter. Separated for the left and right eyes stimuli consisted of two areas: a) identical for both eyes color chromostereopsis part, and b) additional conventional color ne…

Virtual Reality visualizations of complex molecular structures in chemistry education. The β-CD-ASA example

2021

Traffic congestion reduction based on vehicle platoons and intelligent crossroads interactions

2021

Intersections are at the core of urban congestion. For more than a decade, new approaches based on autonomous and connected driving have been proposed. They aim to improve the performance of traffic control at intersections, by harnessing connectivity and driving automation (longitudinal control). These approaches have in common the fact that vehicles can negotiate together their right of way to use the conflicting space. However, they are different in terms of the way they share the space and optimization techniques. The challenge is to define the sequence of access of vehicles to the common space (which one goes first, which is the second, and so on) and the speed profile of vehicles to a…

MAClets: Active MAC Protocols over hard-coded devices

2012

We introduce MAClets, software programs uploaded and executed on-demand over wireless cards, and devised to change the card's real-time medium access control operation. MAClets permit seamless reconfiguration of the MAC stack, so as to adapt it to mutated context and spectrum conditions and perform tailored performance optimizations hardly accountable by an once-for-all protocol stack design. Following traditional active networking principles, MAClets can be directly conveyed within data packets and executed on hard-coded devices acting as virtual MAC machines. Indeed, rather than executing a pre-defined protocol, we envision a new architecture for wireless cards based on a protocol interpr…

The powers of masculinization in humanitarian storytelling: the case of the surgeon María Gómez Álvarez in the Varsovia Hospital (Toulouse, 1944–1950)

2020

This contribution is focused on analysing the power of 'masculinization' through which traditional humanitarian storytelling has been shaped. Strongly marked by a patriarchal vision, humanitarian accounts have traditionally hidden the work of women while stressing that performed by men, who appeared represented as true protagonists and, even, as heroes. In particular, this article analyses the professional career of a Spanish female surgeon named Maria Gomez (1914-1975) between 1944 and 1950, when she worked in a small charitable hospital based in Toulouse (France) for improving the health-care conditions of Spanish Republican refugees. Known as Hospital Varsovia or as Walter B. Cannon Memo…

Data Stream Clustering for Application-Layer DDoS Detection in Encrypted Traffic

2018

Application-layer distributed denial-of-service attacks have become a serious threat to modern high-speed computer networks and systems. Unlike network-layer attacks, application-layer attacks can be performed using legitimate requests from legitimately connected network machines that make these attacks undetectable by signature-based intrusion detection systems. Moreover, the attacks may utilize protocols that encrypt the data of network connections in the application layer, making it even harder to detect an attacker’s activity without decrypting users’ network traffic, and therefore violating their privacy. In this paper, we present a method that allows us to detect various application-l…

Definition of a Workflow for Web Browsing of 3D Models in Archaeology

2016

The Cultural Heritage (CH) is a fundamental element of promotion of territories and of tourism development. Publishing 3D models of archaeological sites and their three-dimensional reconstruction on the Web is one of the best ways to spread their knowledge. However, many recent scientific researches in this field have highlighted the limitations and difficulties related to the networking of interactive 3D models. The main difficulties are related to the complexity and the size of models, which influence the access speed, and the cost of software and hardware needed for the publication on the WEB. In light of this background, this article describes the further advances of research activities…

Edutec : revista electrónica de tecnología educativa

2015

Título, resumen y palabras clave en español y en inglés Resumen basado en el de la publicación Tras la primera formulación en 1995 sobre qué es una Webquest, ¿cuál es el estado de su desarrollo en el campo de la educación? Esta pregunta exige muchas miradas y respuestas. Se pone en evidencia el desarrollo de la producción científica sobre Webquest en las dos principales bases de datos científicas: WOS (Web of Science) y Scopus desde su formulación hasta la actualidad (1995-2014). El método es el análisis bibliométrico en base a las siguientes variables: número de artículos publicados, número de citas recibidas, principales revistas citantes, promedio de citas por año, nombre y país de los a…

Parallel and Distributed Resource Allocation With Minimum Traffic Disruption for Network Virtualization

2017

Wireless network virtualization has been advocated as one of the most promising technologies to provide multifarious services and applications for the future Internet by enabling multiple isolated virtual wireless networks to coexist and share the same physical wireless resources. Based on the multiple concurrent virtual wireless networks running on the shared physical substrate, service providers can independently manage and deploy different end-users services. This paper proposes a new formulation for bandwidth allocation and routing problem for multiple virtual wireless networks that operate on top of a single substrate network to minimize the operation cost of the substrate network. We …

Maza biroja tīkla izveide

2016

Kvalifikācijas darba mērķis ir izveidot funkcionālu maza biroja informācijas sistēmas testa vidi, ko, ja nepieciešams uzreiz veiksmīgi varētu ieviest mazā birojā, ar nelielām izmaiņām, kā problēmsituācijas risinājumu. Testa vides mērķis ir izveidot lokālo tīklu, ar domēnu sistēmu, kur būtu pieejama datu glabātuve, kas ļaus tīkla administratoram centralizēti pārvaldīt izveidoto informācijas sistēmu. Papildinājumā tika izveidots tīmekļa serveris, skatoties uz biroja mūsdienīgajām prasībām un vajadzībām. Risinājums tiks ieviest, izmantojot tikai bezmaksas izmēģinājuma Windows programmas, uz kuru tiks uzstādīts servera funkcijas un testa biroja darbinieku profili, virtuālajā Oracle VM VirtualBo…