نتایج جستجو برای: landing

تعداد نتایج: 9312  

2009
Ponnurangam Kumaraguru Lorrie Faith Cranor Laura Mather

This paper describes the design and implementation of the Anti-Phishing Working Group (APWG) anti-phishing landing page, a web page with a succinct anti-phishing training message designed to be displayed in place of a phishing website that has been taken down. The landing page is currently being used by financial institutions, phish site take-down vendors, government organizations and online me...

2008
Alexander Nebylov Vladimir Nebylov

Wing-in-Ground Effect vehicle (WIG-craft) or ekranoplane landing direction optimization criteria is suggested which heeds the irregular sea waves features and provides the minimal mechanical strain on the vehicle body at hydrodynamic braking. The problem of automatic choice of the landing trajectory direction regarding the main direction of sea waves spread is under consideration. The peculiari...

2016
Andrew A. Tran Corey Gatewood Alex H. S. Harris Julie A. Thompson Jason L. Dragoo

BACKGROUND Identification of biomechanical risk factors associated with anterior cruciate ligament (ACL) injury can facilitate injury prevention. The purpose of this study is to investigate the effects of three foot landing positions, "toe-in", "toe-out" and "neutral", on biomechanical risk factors for ACL injury in males and females. The authors hypothesize that 1) relative to neutral, the toe...

2007
Tobias Seidl Daniela Girimonte

Demands for planetary landing Unmanned exploratory missions to e.g. Mars involve a landing phase, where the spacecraft descends vertically to the planetary surface. In order to minimize the impact during landing a breaking system of parachutes and airbags is employed. This system is uncontrolled and hence not able to adapt to unforeseeable situations. Indeed, landing spacecraft may easily hit a...

Journal: :J. Scheduling 2014
Dirk Briskorn Raik Stolletz

This paper focuses on the aircraft landing problem that is to assign landing times to aircraft approaching the airport under consideration. Each aircraft’s landing time must be in a time interval encompassing a target landing time. If the actual landing time deviates from the target landing time additional costs occur which depend on the amount of earliness and lateness, respectively. The objec...

2013
I. Čuk M. Marinšek

In gymnastics every exercise finishes with a landing. The quality of landing depends on subjective (e.g. biomechanical) and objective (e.g. mechanical characteristics of landing area) factors. The aim of our research was to determine which biomechanical (temporal, kinematic and dynamic) characteristics of landing best predict the quality of landing. Twelve male gymnasts performed a stretched fo...

2005
Sanghak Sung Youngil Youm Wankyun Chung

This Paper is about landing control of legged robot. Body stiffness and damping is used as landing strategy of a legged robot. First, we only used stiffness control method to control legged robot landing. Second control method,sliding mode controller and feedback linearization controller is applied to enhance position control performance. Through these control algorithm, body center of gravity ...

In this research, an automatic control system is designed for landing of a small helicopter on a 4 DOF moving platform. The platform has three translational and one directional degree of freedom. The controller design approach is based on development of helicopter nonlinear dynamic model into the SDC (State Dependent Coefficient) form and real time solving of state dependent Riccati equation (S...

Journal: :Journal of Intelligent and Robotic Systems 2014
Shaowu Yang Sebastian Scherer Konstantin Schauwecker Andreas Zell

This paper presents a novel solution for micro aerial vehicles (MAVs) to autonomously search for and land on an arbitrary landing site using realtime monocular vision. The autonomous MAV is provided with only one single reference image of the landing site with an unknown size before initiating this task. We extend a well-known monocular visual SLAM algorithm that enables autonomous navigation o...

Journal: :Science 1970

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