نتایج جستجو برای: flying

تعداد نتایج: 10319  

2016
Stefan Leutenegger Christoph Hürzeler Amanda K. Stowers Kostas Alexis Markus Achtelik David Lentink Paul Y. Oh Roland Siegwart

Unmanned Aircraft Systems (UAS) have drawn increasing attention recently, owing to advancements in related research, technology and applications. While having been deployed successfully in military scenarios for decades, civil use cases have lately been tackled by the robotics research community. This chapter overviews the core elements of this highly interdisciplinary field; the reader is guid...

2013
Hsiao-Hsuan Wang Nina Y. Kung William E. Grant Joe C. Scanlan Hume E. Field

Zoonoses from wildlife threaten global public health. Hendra virus is one of several zoonotic viral diseases that have recently emerged from Pteropus species fruit-bats (flying-foxes). Most hypotheses regarding persistence of Hendra virus within flying-fox populations emphasize horizontal transmission within local populations (colonies) via urine and other secretions, and transmission among col...

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 2015
María Laura Hernández Jean Pierre Dujardin David Eladio Gorla Silvia Susana Catalá

INTRODUCTION Insects of the subfamily Triatominae are vectors of Trypanosoma cruzi , the Chagas disease parasite, and their flying behavior has epidemiological importance. The flying capacity is strikingly different across and within Triatominae species, as well as between sexes or individuals. Many Triatoma infestans individuals have wings but no flying muscles. In other Triatominae species, n...

2015
Kim R. McConkey Donald R. Drake

The low species diversity that often characterizes island ecosystems could result in low functional redundancy within communities. Flying foxes (large fruit bats) are important seed dispersers of large-seeded species, but their redundancy within island communities has never been explicitly tested. In a Pacific archipelago, we found that flying foxes were the sole effective disperser of 57 % of ...

2014
Jessica Tait Humberto L. Perotto-Baldivieso Adam McKeown David A. Westcott Elissa Z. Cameron

Urbanisation of wildlife populations is a process with significant conservation and management implications. While urban areas can provide habitat for wildlife, some urbanised species eventually come into conflict with humans. Understanding the process and drivers of wildlife urbanisation is fundamental to developing effective management responses to this phenomenon. In Australia, flying-foxes ...

2011
Janez Vodičar Bojan Jošt

The objective of this study was to analyse selected kinematic parameters (time of flying, in-run velocity, take-off velocity, out-run velocity, height of flying at 17 m, height of flying at 75 m, height of flying at 120 m, aerodynamic index at 17 m, aerodynamic index at 75 m, aerodynamic index at 120 m) of the best world-class ski jumpers participating in the two final individual competitions (...

Maysam Sadeghi, Mohamad Agha Shafiyi Mojtaba Khederzadeh,

This paper presents a grid connected photovoltaic system, which acts as both power generator and active power filter (APF), based on Flying Capacitor Multicell (FCM) converter. Increase in the number of output voltage levels, natural self-balancing of flying capacitors and dc link voltage and lower power rating of components are the main futures of FCM converter compared with conventional multi...

Maysam Sadeghi, Mohamad Agha Shafiyi Mojtaba Khederzadeh,

This paper presents a grid connected photovoltaic system, which acts as both power generator and active power filter (APF), based on Flying Capacitor Multicell (FCM) converter. Increase in the number of output voltage levels, natural self-balancing of flying capacitors and dc link voltage and lower power rating of components are the main futures of FCM converter compared with conventional multi...

2017
Sheema A Aziz Gopalasamy R Clements Kim R McConkey Tuanjit Sritongchuay Saifful Pathil Muhammad Nur Hafizi Abu Yazid Ahimsa Campos-Arceiz Pierre-Michel Forget Sara Bumrungsri

Fruit bats provide valuable pollination services to humans through a unique coevolutionary relationship with chiropterophilous plants. However, chiropterophily in the Old World and the pollination roles of large bats, such as flying foxes (Pteropus spp., Acerodon spp., Desmalopex spp.), are still poorly understood and require further elucidation. Efforts to protect these bats have been hampered...

2013
Yibo LI Chao Chen Wei Chen

Linear Quadratic Regulator (LQR) is widely used in many practical engineering fields due to good stability margin and strong robustness. But there is little literature reports the technology that has been used to control the flying wing unmanned aerial vehicles (UAV). In this paper, aiming at the longitudinal static and dynamic characteristics of the flying wing UAV, LQR technology will be intr...

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