Attitude estimation is a core problem in many robotic systems that perform automated or semi automated navigation. The configuration space of the attitude motion is naturally modelled on the Lie group of special orthogonal matrices SO(3). Many current attitude estimation methods are based on non-matrix parameterization of attitude. Non-matrix parameterization schemes sometimes lead to modelling...

Formally posed in 1965, the problem of optimal attitude estimation from vector measurements has been a hot topic of research in the aerospace community. This paper provides a survey of open source quadrotor helicopter autopilots that demonstrates that the Unmanned Aerial Vehicle community has largely ignored the optimal attitude estimation work to date. Furthermore, the effectiveness of a quadr...

The aims of the present study were to evaluate treated and untreated subjects' attitudes towards orthodontic treatment and to examine possible determinants of these attitudes. It was hypothesized that orthodontically treated individuals would differ from untreated respondents in their attitude towards orthodontists and orthodontic treatment, and that female subjects would have a more positive a...

Teachers have been given a major role in creating awareness of HIV/AIDS and in ensuring that young people have the knowledge and skills to protect themselves. This study examines the extent to which attitude functions towards talking about condoms and sexuality impacts on teachers’ willingness to address HIV/AIDS in school and community settings in Mozambique. Data were collected through a surv...

The aim of the present study is to ascertain whether in a social context the kinematic parameters are influenced by the stance of the participants. In particular, we consider two basic modes of social cognition, namely cooperation and competition. Naïve subjects were asked either to cooperate or to compete with a partner (a professional female actor), whose attitude could be either congruent or...

Background: To encourage students and professionals to use health information technology (HIT), an awareness of their perceptions of various aspects of using this facility is essential. The current study aimed to assess HIT knowledge, attitude, and practice among health care professionals and students in teaching hospitals in Iran. Methods: This case study survey was conducted on 250 staffs of ...

Traditionally, the automotive industry has been the largest employer of robots, but their control is inline and programmed to follow planning trajectories. In this case, in the motor's department test of Volskwagen México a semi autonomous robot is developed to generally purpose. Some critical technical problems must be solved in a number of areas, including in dynamics and control. Generally, ...

INTRODUCTION Treatment team charged to help patients and their family making decision about donate organs in the final stage of life. Hence, their knowledge and attitude is important to plan of increasing the rate of organ donation. MATERIALS AND METHODS About 150 nurses recruited in this cross-sectional study randomly. After taking informed consent, questionnaires were filled. The data colle...

An attitude reconstruction algorithm has been developed for a flexible sounding rocket whose spin vector nutates unstably about its minor inertia axis. This algorithm deduces attitude for use in post-flight analysis of the sounding rocket's science data. An additional motive for pursuing this work has been to show that a flexible-body dynamic model can be used in a Kalman filter/smoother-type a...