Lost Freedom Essay -- essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  For many ages freedom has been one of the main priorities in human life. People are determined to have freedom of spirit, religion, opinion, speech; they aspire to be free to decide where and with whom to live, where to work, what to wear, and how to live their lives in general. However, a lot of people are deprived of freedom one way or another, either they are physically imprisoned or influenced by circumstances and life situations.   Ã‚  Ã‚  Ã‚  Ã‚  Physical imprisonment is one of the most devastating experiences for a human being, and affects a person in many ways, physically and mentally. Some of the factors that endanger the physical health of imprisoned people are poor environmental conditions, lack of healthy food, medicine, immediate con...

Pilgrim Fathers

The pilgrim fathers where different to other colonists because when they arrived in America they did not explore the land. The pilgrim fathers stayed at the beach, set up camp and survived badly. The pilgrim fathers where extremely religious. They would not sing any song or do any dance because it distracted their memory when they talked to god. The pilgrim fathers where ordinary people with ordinary jobs such as a black smith or farmers. When the pilgrim fathers travelled to America they had a lot of problems. They travelled with about 20 people on a very small boat. This made many people sick. The boat was so cramped that 2 men died and a baby was born! On the journey they didn’t have any materials with them so they could not do anything to fix the boat. They struggled heavily. It took them 65 days to travel across the ocean and land in America. They arrived on January the 4th 1920. It was extremely cold where they stayed. When the pilgrim fathers met Squanto it was like meeting god for them. This is because Squanto was fluent at English and he knew how to survive. Squanto taught the pilgrim fathers how to fish herring, how to plant corn his way and how to survive the winter. The Indians respected the land and shared it with everyone. No one owned any piece of land. However, the English wanted to trade land and keep it for themselves. The Indians did not like this because they considered their land as a god. The native Americans (Indians), taught the English to eat pumpkin pie and corn. This was very strange for the English because it wasn’t part of their usual diet. This is remembered on the 25th of November in America. They call it ‘thanks giving’.

Navigation and Pose Estimation Theory - 1193 Words

Basic Theory In the previous chapter, we introduce about the indoor positioning system techniques and the research directions. In this chapter we will describe the basic theory related with the navigation and pose estimation systems for example, the coordinate system, the dead-reckoning method, the characteristic of Wi-Fi radio signal propagation etc. For all of the basic ideas are very important thing to understanding the configuration of our research as follow; 2.1 The Local Coordinate system The coordinate system was used to defined in local-area environment name is the Cartesian coordinate system refer to [55]. It can be referenced by placing the origin to the local point consist with 3 reference axis, there are axis is directed to the vertical, axis is pointed to the north and axis is directed to the east, see in figure 1. Figure 1 The Cartesian coordinate system. The plane is the horizontal plane and the vertical plane is defined perpendicular to the ellipsoid such a coordinate system is also called a local horizontal coordinate system. From figure 1. can be described, the projection point whose coordinates in global and local coordinate system are and respectively, one has relation of as follow: (2.1) Where the is the azimuth angle measure from the north clockwise, is the zenith distance that mean the angle the vertical and the radian and r is the radian of the in the local system. 2.1.1 Transformation Matrix in Cartesian coordinateShow MoreRelatedWhat Is The Methods Of Objective Control Of UGV?950 Words   |  4 Pagesslip constraints. This method is computationally efficient but does not guarantee feasibility or optimality [25]. Another study shows that to extend a convergent dynamic window approach, an adaptive version of passivity-based LMPC can be used into navigation. 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