In this paper we develop a methodology based on ballistics to estimate the landing footprint associated with the powered terminal descent phase of a Mars soft landing. The analysis is based on an idealized two-impulse thrust maneuver and leads to an analytical expression for the elliptical boundary of the landing footprint. Our goal was to develop a method (with low computational overhead) to e...

BACKGROUND Minimising the likelihood of injury to the anterior cruciate ligament (ACL) during abrupt deceleration requires proper synchrony of the quadriceps and hamstring muscles. However, it is not known whether simple verbal instructions can alter landing muscle activity to protect the knee. OBJECTIVE To assess the efficacy of verbal instructions to alter landing muscle activity. METHODS...

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...

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...

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...

We have developed a spatially explicit modelling framework that links duck migration patterns with gene transport. The model is individual-based and simulates the journey of a duck from migration start locations through stopover sites to breeding or wintering sites. We investigate two different migration strategies: ‘hopper’ (where the bird makes many stopovers) and ‘jumper’ (where the bird mak...

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...

In this paper, we propose WebCop to identify malicious web pages and neighborhoods of malware on the internet. Using a bottom-up approach, telemetry data from commercial Anti-Malware (AM) clients running on millions of computers first identify malware distribution sites hosting malicious executables on the web. Next, traversing hyperlinks in a web graph constructed from a commercial search engi...

Most advanced persistent threat attacks target web users through malicious code within landing (exploit) or distribution sites. There is an urgent need to block the affected websites. Attacks on biomedical information systems are no exception to this issue. In this paper, we present a method for locating malicious websites that attempt to attack biomedical information systems. Our approach uses...