Search results for " Passive"
showing 10 items of 90 documents
No tēmas atkarīgs ciešamās kārtas lietojums angļu valodas korpusos
2015
Ir zināms, ka ciešamā kārta tiek bieži vien pielietota lietišķajā stilā, bet tā nav tik bieži sastopama mutvārdu saziņā, bet vai ciešamās kārtas lietojums var atšķirties atkarībā no tēmas? Bakalaura darbā tika analizēts ciešamās kārtas lietojums atkarībā no materiāliem, kas var tikt atrodami korpusos. Darba hipotēze ir tāda, ka dažādos tematos ciešamās kārtas lietojums atšķiras. Lai pārbaudītu izvirzīto hipotēzi un sasniegtu izvirzīto pētījuma mērķi, tika izpētīti rakstītie avoti un agrāk veikti pētījumi par ciešamo kārtu un tās lietojumu. Pētījuma praktiskajai daļai tika izvēlēti pieci darbības vārdi un tie tika sameklēti trīs dažādos angļu valodas korpusos, izmantojot tiešsaistes programm…
WIDAR: Bistatic WI-fi Detection And Ranging for off-the-shelf devices
2013
The huge spread of wireless networks and the success of location-aware applications require novel indoor po- sitioning mechanisms based on existing technologies such as IEEE 802.11. Taking inspiration from the RADAR, we propose WIDAR: a bistatic WI-fi Detection And Ranging system for off- the-shelf devices. WIDAR implementation is based on the USRP2 platform and is able to locate 802.11 stations while they operate in existing legacy networks. No substitution or repositioning of the Access Points is necessary. WIDAR works passively and does not expect any dedicated action from the target WiFi node. No airtime is wasted and the target cannot even detect that it is being ranged. Such features …
Optimal passive-damping design using a decentralized velocity-feedback H-infinity approach
2012
In this work, a new strategy to design passive energy dissipation systems for vibration control of large structures is presented. The method is based on the equivalence between passive damping systems and fully decentralized static velocity-feedback controllers. This equivalence allows to take advantage of recent developments in static output-feedback control design to formulate the passive-damping design as a single optimization problem with Linear Matrix Inequality constraints. To illustrate the application of the proposed methodology, a passive damping system is designed for the seismic protection of a five-story building with excellent results. Peer Reviewed
Le camere dello scirocco: archetipi bioclimatici della Palermo antica
2014
"Scendesi più in basso a man destra vi è una grotta seu camera di scirocco con fontana in mezzo e tutto un giro di mattoni di Valenza e più sopra un lavoro di crocchiole con diversi animali per buttar l’acqua". Queste parole di un atto notarile del 1691 fanno, per la prima volta, riferimento alla 'camera dello scirocco’, singolare esempio di archetipo per il raffrescamento passivo e parte di un inestimabile patrimonio, eredità di secoli di storia e del succedersi di popoli che hanno fatto di Palermo una città d'arte e cultura. Strutture ipogee che, insieme ad altri capolavori di ingegneria presenti nel sottosuolo palermitano, testimoniano quanto le potenzialità dell'ingegno umano siano in g…
La détermination passive et quelques thématisations particulières en anglais médical
1997
À partir d’exemples caractéristiques issus d’un corpus de 2 115 structures passives tirées de la revue britannique The Lancet, j’ai réalisé une classification originale de ces diathèses passives en trois grandes catégories, à savoir la détermination passive simple, la détermination passive complexe et la détermination passive tronquée. Après avoir précisé en quoi ces opérations de détermination correspondaient à une stratégie énonciative particulière — qu’elle soit réfléchie ou spontanée — mise en œuvre par les médecins, j’ai analysé quelques formes extrêmes, ou déterminations particulières, notamment celles présentées sous la forme d’adjectifs composés. Thanks to 2,115 passive structures c…
Analysis of the Multi-Application Small Light-Water Reactor (MASLWR) Design Natural Circulation Phenomena
2011
Human Activity Signatures Captured under Different Directions Using SISO and MIMO Radar Systems
2022
In this paper, we highlight and resolve the shortcomings of single-input single-output (SISO) millimeter wave (mm-Wave) radar systems for human activity recognition (HAR). A 2×2 distributed multiple-input multiple-output (MIMO) radar framework is presented to capture human activity signatures under realistic conditions in indoor environments. We propose to distribute the two pairs of collocated transmitter–receiver antennas in order to illuminate the indoor environment from different perspectives. For the proposed MIMO system, we measure the time-variant (TV) radial velocity distribution and TV mean radial velocity to observe the signatures of human activities. We deploy the Anc…
Contrasting stress fields on correlating margins of the South Atlantic
2015
Made available in DSpace on 2018-12-11T17:25:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-01-01 The passiveness of passive continental margins across the globe is currently under debate since several studies have shown that these margins may experience a variety of stress states and undergo significant vertical movement post-breakup. Of special interest is the South Atlantic, because the bounding continents have very different recent geological histories, with Africa experiencing continental rifting whereas South America is influenced by subduction on the Pacific side. It is not clear to what extent the Atlantic continental margins are subject to the same stresses and vertical …
Public and Private Economic Feasibility of Green Areas as a Passive Energy Measure: A Case Study in the Mediterranean City of Trapani in Southern Ita…
2022
Green infrastructure in urban environments provides a wide range of ecological, social, aesthetic, and health co-benefits. Urban plant covers in particular contribute to improved outdoor environmental conditions that, in turn, influence the energy behavior of buildings and their indoor thermo-hygrometric comfort performance. Within this context, this study illustrates a methodology aimed at verifying the economic feasibility of alternative types of green areas for public and private stakeholders, which are analyzed as passive energy measures. Therefore, our methodology integrates approaches from different disciplines and consists of a microclimatic analysis of different vegetation scenarios…
The role of maternal effects in host-parasite interactions: examination of the development of the immune defense in a colonial seabird, the black-leg…
2004
One of the main aims of evolutionary biology is to understand the mechanisms responsible for the phenotypic variation on which natural selection can act. Maternal effects occur when a mother's phenotype or her environment influence her offspring's phenotype. Despite the importance of such effects for the ecology of host-parasite interactions, their role has been relatively neglected to date. In this thesis, we examined how mothers influence the immune defense of their young in an environment that varies in space and time. This work has primarily focused on a colonial seabird, the black-legged kittiwake (Rissa tridactyla). Using this model, we have first shown that specific maternal antibodi…