Experiences
Experiences with Android Development
Android is an open source mobile operating system based on Linux kernel version 2.6. The Open Handset Alliance, which includes a large group of companies (e.g. mobile operators, handset manufactures, semiconductor companies, software companies, and commercialization companies) responsible for the development and release of Android OS. Android has a variety of open-source libraries and tools to support our development work, such as Android Development Tools plug-in for Eclipse IDE, device emulator, JDWP debugger. And it adopts Java development, so it’s more efficient compare to C++ development, and more suitable for the development work in this project, and my previous experience of Java also helps.
Android has an official website for android developer, it contains comprehensive development documentation. The fastest way to learn any programming language and technology could be ‘learning by doing’. We don’t have relevant experience with Android, so we used the same method in this project, learn from the sample code in the official site or codes of other excellent applications, at the same time combined with systematic study. The project goes on good comparing to our project plan, which proofs that this method works out very well.
Generally, Android programming is a lot of fun. The graphical user interface design uses the same architecture as Web development: declarative way by using XML layout files. Android can build the graphical user interfaces fast through the configuration files in the layout folder, and it’s very convenient for developer to modify any attribute or style. Moreover, user interface layouts are defined in readable structure, which facilitates both the developm...
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Anticipate the moment at which all your personal electronic devices - headphone audio player, cellular telephone, pager, dictaphone, camcorder, personal digital assistant (PDA), electronic stylus, radiomodem, calculator, Loran positioning system, smart spectacles, VCR remote, data glove, electronic jogging shoes that count your steps and flash warning signals at oncoming cars, medical monitoring system, pacemaker (if you are so unfortunate), and anything else that you might habitually wear or occasionally carry - can seamlessly be linked in a wireless bodynet that allows them to function as an integrated system and connects them to the worldwide digital network. (Mitchell 29)
Bradford w. Parkinson. “Global Positioning System: Theory and Applications – vol. I and II”, American Institute of Aeronautics and Astronautics, Washington, 1996.
To begin, the basic concept of the Global Positioning system consists of having a minimum of 24 operational satellites in orbit at an altitude of about 24,000 km above the Earth and traveling at an orbital speed of around 14,000 km/hour. At any point in time, there are always at least 4 satellites that are “visible” to your receiver (ex. iPhone). The receiver then gets information from at least 3 of these 4 satellites and uses what is called Trilateration to determine your exact position on the surface of the Earth. Trilateration, according to the Encyclopedia Britannica, is a “method of surveying in which the lengths of the sides of a triangle are measured and from this information angles are computed. By constructing a series of triangles adjacent to one another, a surveyor can obtain other distances and angles that would not otherwise be measurable.” To simplify things, trilateration is the method by which 3 satellites send a signal to a receiver which then calculates the distances to each one, and the time at which the signal was sent. The time portion of this process is essential and will be explained later on. The receiver then compares these 3 or even 4 signals and finds the common intersection between them, essentially determining where the GPS user is.
Miller, A.B. (2001), Bluetooth Revealed: The Insiders Guide to an Open Specification for Global Wireless Communications, 2nd Edition, USA, Prentice Hall [Accessed 6th April, 2008]
Global Positioning System (GPS) technology has been on the market for a number of years now. Originally developed by the military for logistical tracking and navigation, it has seen a number of applications for personal and commercial uses in recent years, with more coming down the development pipeline. GPS uses a constellation of low earth orbit satellites to determine the exact longitude, latitude and altitude of the user or vehicle with the tracking monitor. This location is determined by using trilateration between at least three, and preferably four satellites overhead.
GPS has become a widely deployed and useful tool for commerce, scientific uses, tracking, and surveillance. GPS's accurate time facilitates everyday activities such as banking, mobile phone operations, and even the control of power grids by allowing well synchronized hand-off switching.Many civilian applications use one or more of GPS's three basic components: absolute location, relative movement, and time transfer. The wide variety of fields of application of GPS for civilian use includes Astronomy, Cartography, Cellular telephony, Clock synchronization, Disaster relief/emergency services, Radio, aircraft tracking, Navigation, Tours, Mining, Surveying, Tectonics, etc.
This document describes the final project for the course COEN 283 – Operating System. The project is team oriented, main goal is to select a topic related the Operating System concepts that should be either theoretical, in which new algorithm is analysis and simulate, in which subsystem/driver of an OS is prototyped. Provide the simulation/implementation code and explain the detail design in this report. This project will provide opportunity for students to perform research on topic of interest of operating system.
The computation performed on mobile devices is referred to as Mobile Computing [1]. Mobile computing involves mobile communication [2], mobile hardware, and mobile software. Communication is among various adhoc mobile devices in a network which includes certain properties, operations and protocols. Mobile hardware is collection of various mobile devices with in a network. Mobile software includes characteristics and requirements of mobile applications.
The following flowchart shows the data relation and algotithm for estimate the position of user. The first step for GPS positioning is using the position of satellite and pseudorange from GPS receiver data to estimate the position of user. The simulation results for GPS satellite position are shown in T...
When searching for the latest device you have a choice between apple, and android. These two are similar but very different. Infact these both have two different operating systems. For instance Apple uses IOS 9, apple phones can use this software. On android the software 5.0 is used. All these phones run different programs, you need to make sure that is the right phone for you. There are many different features and styles of phones you can get. Also these all come at a price. This paper will talk about all these topics to make sure you have an idea on what device you would like to buy.
The Global Positioning System, more commonly called the GPS is a satellite based system that provides navigation for almost everything from cell phones to automobiles. This wonderful technology is very vital in today’s economy because of its prominence in banking, financial markets, power grids, farming, construction and so much more. It also protects human life by preventing accidents, helping in search and rescue missions and is critical to nearly every facet of military operations. There are three segments that make up the global positioning system: the space segment, the control segment and the user segment. The segment we are familiar with is the user segment. The user segment is what receives GPS signals, determines the distance between a satellite and a receiver and solves the navigation equations, all in order to obtain the coordinates of a specific place. The space segment consists of 31 satellites but there is an availability of at least 24 satellites that are approximately 6 000-12 000 miles above the earth.
Exit Skeuomorphism, Enter Flat Design: The leather paper feel of the app designs are now absent. Flat designs embraced with dollops of pastel colors fill the screen and the icons making the get-up more simple and down-to-earth. Coupled with zooming animations and 3D parallax wallpaper, the OS is made to look very much alive and kicking. The whole design is made in a way, which makes every scree...
Venkateswara Rao, G. G., Veereswara Swamy, G. G., Srinivasa Rao, G. G., & Madhusudhana Reddy, P. P. (2011). Design and Implementation Of Hardware And Software Systems For Object Tracking Using RFID Technology. International Journal Of Advanced Networking & Applications, 2(6), 923-926.
Many of the research presented in the field of mobile phone-based interaction techniques that have been developed so far fall into three main classes according to Sas & Dix [21]. In some research, the personal device effectively acts as an extended input device for text editing or pointing task. In others, the phone is used to upload and download media using standard content and protocols. The third class is where the mobile phone is a more integral part of the interaction, typically using the display of the device in concert with the public display. Ballagas et al [7] present a survey of the existed interaction techniques that use mobile phones as pointing device. Alongside with the survey, they present an analysis on these techniques based on the following taxonomy: position, orient, select, path, quantify, and text .The study concludes that the mobile phone is suitable devise for positioning tasks in various ways especially when interacting with public display in pervasive environment. Bellow we present some studies based on Sas & Dix classification [21].
Android is an operating system which is used in smart phones. It is an open source software. That is the code is available under the apache license freely for moderation and distribution by device manufacturer. As we know android is the open source software so manufacture modifies it according to their needs and requirements of the user perspective. In 2007 first time android was intended and first time it was...