Modern miniaturization technologies enable the realization of very small satellites at masses below 1kg, nevertheless limited attitude determination and actuator performances raise challenging control problems. Specific attitude determination aspects discussed at the example of UWE (University of Wuerzburg Experimental satellite), a standardized pico-satellite platform related to technology dem...

Nowadays how to be a successful exporter has reach great importance. Some studies on the entrepreneurial orientation literature highlights the attitude of the manager to make risky strategies such as strategies toward exports. But might the CEO’s attitude toward entrepreneurship be sufficient to achieve greater SMEs export performance? Through an analysis of a database of Spanish and Italian SM...

For autonomous helicopter flight, it is common to separate the flight control problem into an inner loop that controls attitude and an outer loop that controls the translational trajectory of the helicopter. In previous work, dynamic inversion and neural-network-based adaptation was used to increase performance of the attitude control system and the method of pseudocontrol hedging (PCH) was use...

OBJECTIVE This study is the first to examine the influence of implicit attitudes toward automation on users' trust in automation. BACKGROUND Past empirical work has examined explicit (conscious) influences on user level of trust in automation but has not yet measured implicit influences. We examine concurrent effects of explicit propensity to trust machines and implicit attitudes toward autom...

High accuracy attitude and position determination is very important for underwater gliders. The cross-coupling among three attitude angles (heading angle, pitch angle and roll angle) becomes more serious when pitch or roll motion occurs. This cross-coupling makes attitude angles inaccurate or even erroneous. Therefore, the high accuracy attitude and position determination becomes a difficult pr...

We present a technique for measuring, controlling, and stabilizing the attitude of a UAV by using a camera to monitor the visual horizon. A vision-based algorithm incorporating color and intensity information is used to detect the horizon by segmenting the ground from the sky. The attitude of the aircraft is then measured using the position, shape, and orientation of the horizon profile in the ...

The Role of Student and School Variables in Reading Performance among Those Participated in PIRLS 2006 M. S. Reza'ee A.R. Kiamanesh, Ph.D. Z. Naghsh, Ph.D. To determine the role of student and school variables in reading performance, the data on Iranian fourth graders who participated in PIRLS 2006 were analyzed. The sample had included 3978 students from 208 schools. At the stu...

Typical quadrotor aerial robots used in research weigh less than 3 kg and carry payloads measured in hundreds of grams. Several obstacles in design and control must be overcome to cater for expected industry demands that push the boundaries of existing quadrotor performance. The X-4 Flyer, a 4 kg quadrotor with a 1 kg payload, is intended to be prototypical of useful commercial quadrotors. The ...