Android Operating System Analysis

Android Operating System Analysis Android (Operating System) Revolution in Mobile Technology Abstract Androids mobile operating system is based on the Linux kernel and it is a software stack for mobile devices. This operating system is one of the worlds best-selling Smartphone platform. Android involves many developers writing applications that helps in extended the functionality of the devices. There are currently over 1,50,000 applications available for Android. Android Market is the online application store run by Google, though applications can also be downloaded from third-party sites. Developers write in the Java language. The unveiling of the Android distribution on 5 November 2007 was announced with the founding of the Open Handset Alliance, a consortium of 80 hardware, software, and telecom companies devoted to advancing open standards for mobile devices. Most of the Android code is released by Google under the Apache License. The Android open-source software stack consists of Java applications running on a Java-based, object-oriented applicationlication framework on top of Java core libraries . Libraries written in C include SQLite relational database management system, WebKit layout engine, SGL graphics engine, SSL. The Android operating system, including the Linux kernel, consists of roughly 12million lines of code including 3million lines of XML, 2.8million lines of C, 2.1million lines of Java, and 1.75million lines of C++. Android logo Ascender Corporation designed the Android logo with the Droid font family. Version history After original release, many updates of androids have been seen. These updates focus on fixing bugs as well as adding new features. Each new version is developed under a code name based on a dessert item. The most recent released versions of Android are: 2.0/2.1 (Eclair), which introduced HTML5 and Exchange ActiveSync 2.5 support 2.2 (Froyo), which introduced speed improvements with JIT optimization , Wi-Fi and Adobe Flash support 2.3 (Gingerbread), which introduced the soft keyboard and copy/paste features, and added support for Near Field Communication 3.0 (Honeycomb), which supports larger screen devices and introduces many new user interface features, and supports multicore processors and hardware acceleration for graphics. The upcoming version of Android is: Ice Cream Sandwich, a combination of Gingerbread and Honeycomb into a cohesive whole, with a possible release in mid-2011. Hardware Running Android The main supported platform for Android is the ARM (Advanced Risc Machines) architecture.ARM is one of the most licensed and thus widespread processor cores in the world. It is used especially in portable devices due to low power consumption and reasonable performance. Now a days cell phones, note books and tablets, including the Dell Streak, Samsung Galaxy Tab, TV and other devices can use the functionality of Android . HTC Dream was the first phone to run android, released on 22 October 2008. Features Current features and specifications: Bluetooth, edge, 3G , WiFi support. Camera GPS, accelerometer support. GSM telephony support. Integrated browser based on the open source webkit engine Media support for common audio video, still image formats. Architecture Architecture Diagram Android architecture has four layers: 1. Application Layer : Android is one of skillful and modifiable OS because of its many applications.Top 25 applications in the list below Goggle voice Advanced task killer Drop box Evernote Droid Analytics Documents to go Amazon kindle Places directory Tripit Seesmic FCC Speedtest Astro File Manager Got To Do Gist TED Mobile Pandora Shazam Dial Zero Google Goggles Google Skymap Tricodor Fxcamera Photoshop Mobile Bump Barcode Scanner These applications are written in Java Language. Screen Shot: 2. Application Framework Layer: Android applications are written in the Java programming language. By the help of SDK tools Androids code is compiled with data and resource file. An archive file has .apk extension. All the code in a single .apk file is considered to be one application. By the help of this file, Android devices use to install the application. Android provides the ability to build extremely rich and innovative applications due to open source platform. These are the services which are provided by it like device hardware, access location information, run background services, set alarms, add notifications to the status bar, and much more. Developers have full access to the same framework APIs used by the core applications. The application architecture is designed to simplify the reuse of components; any application can publish its capabilities and any other application may then make use of those capabilities .This same mechanism allows components to be replaced by the user. Underlying all applications is a set of services and systems, including: Set ofViewsthat can be used to build an application, including lists, grids, text boxes, buttons, and web browser Access data from other applications (such as Contacts), or to share their own data by the help of content providers. AResource Manager, providing access to non-code resources such as localized strings, graphics, and layout files To display custom alerts in the status bar by the help of a notification manager. Lifecycle of applications can be maintained by an activity manager. 3. Libraries: Android system uses a set of C/C++ libraries which helps in functioning of its various components.. Android application framework exposes its functionalities for its users. Some of the core libraries are listed below: System C library a BSD-derived implementation of the standard C system library , tuned for embedded Linux-based devices Media Libraries many audio and video formats are supported by these libraries. These libraries support image formats like MPEG4, H.264, MP3, AAC, AMR, JPG, and PNG. Surface Manager manages access to the display subsystem and seamlessly composites 2D and 3D graphic layers from multiple applications LibWebCore a modern web browser engine which powers both the Android browser and an embeddable web view SGL the underlying 2D graphics engine 3D libraries an implementation based on OpenGL ES 1.0 APIs; the libraries use either hardware 3D acceleration (where available) or the included, highly optimized 3D software. FreeType bitmap and vector font rendering SQLite a powerful and lightweight relational database engine available to all applications 4. Linux Kernel Layer : The kernel also acts as an abstraction layer between the hardware and the rest of the software stack. It contains the drivers for flash memory, camera, keypad, Audio, WiFi drivers , networking, file system access and inter process communication. Android relies on Linux version 2.6 for core system services such as security, memory management, process management, network stack, and driver model. Software Development Kit The Android software development kit (SDK) includes a set of development tools viz. a debugger, libraries, a handset emulator documentation, sample code, and tutorials. Android developer website helps in downloading SDK. Currently supported development platforms include computers running Linux (any modern desktop Linux distribution), Mac OS X 10.4.9 or later, Windows XP or later. Instead of using Eclipse (official IDE) developers may use any text editor to edit Java and XML to create, build and debug Android applications. The SDK also supports older versions of the Android platform in case developers wish to target their applications at older devices. Android applications are packaged in .apk format and stored under /data/application folder on the Android OS. APK package contains .dex files ,resource files, etc. List of those features that android phones do better than the iPhone Browsing Desktop Connectivity PC Connection Multi-notification Endless personalization Market Goggle integration Open source Op[en to carriers Current Distribution The following pie chart and table is based on the number of Android devices that have accessed Android Market within a 14-day period ending on the data collection date noted below. Platform API Level Distribution Android 1.5 3 3.9% Android 1.6 4 6.3% Android 2.1 7 31.4% Android 2.2 8 57.6% Android 2.3 9 0.8% Data collected during two weeks ending on February 2, 2011

Ethnic Literature Essay

American literature is just that American literature. American literature is stories of people lives that are based on American standards. Early American standards where based around slavery and oppression but now they are based on freedoms like freedom of speech and press. America has been through many time periods that has shaped it into the wonderful nation that we have today. True American literature is about life in the United States. This paper will create an understanding about American ethnic literature. What is literary canon? How does literary canon relate to what is going on in society? Is traditional American literature multicultural? Literary canon is a classification of literature that is used to describe books or literature that is considered to be important of a time period or place. For writing to become canonized, it has to become widely respected by influential literary critics, scholars, teachers, and anyone that is respected in opinions and judgments regarding literary work. A canonized piece of literature becomes very popular and is studied by students in thousand of classrooms around the world (Casey, 2009) Canonized literature reflects the norms or standards that society follows for a certain time period and location. As society changes so does the type of literature that is canonized (Casey, 2009). For example the biggest topic that people are writing about now is the so called end of the world but about one hundred years ago it was about freedom and anti slavery. In my opinion traditional American Literature is multicultural because the American population is a mixture of so many other cultures. The United States is a melting pot of cultures of the world and that is what makes the US so interesting. Please define â€Å"ethnic literature† and then indicate what you think the value is in studying it, in your opinion? What special challenges do ethnic writers have within the American literary experience? Ethnic literature is piece of writing that is written by people from different cultures, languages, or religion. For example, Native American literature includes â€Å"memories of creation stories, the tragic wisdom of native ceremonies, trickster narratives, and the outcome of chance and other occurrences in the most diverse cultures in the world† (Vizenor, 1995, p. 1). People with the mix of Spanish, Native American, and African cultures have created Hispanic American literature (Kanellos, 1995). In my opinion, there are many reasons why ethnic literature should be studied. Reason One: When you read â€Å"true† literature writing from other religions, you can gain â€Å"true† understanding of what the religion is all about. For example I’m a member of The Church of Jesus Christ of Latter-Day Saints. The LDS or Mormon Church as known by many is a very misunderstood religion. A study of â€Å"true† ethnic literature in this case would eliminate any misunderstanding that people have about the LDS Church. Reason Two: There are certain cultures that we do not know anything about and when we read about them, we will be able to understand why they do certain things. I want to call this cultural understanding. We have all heard the saying, â€Å"You can’t judge a book by its cover. † then we shouldn’t judge a religion or a culture by the things they do until we understand why they do those things. How do ethnic writers define literature? How does that differ from the canon of traditional American literature? â€Å"Traditional† American literature and ethnic literature differ based on the back ground of the author. â€Å"Traditional† American literature is influenced by culture within the United States. Ethnic literature is influenced by culture outside of the United States. The author Mark Twain comes to mind first because he is a talented American author that wrote The Adventures of Tom Sawyer and later Adventure of Huckleberry Finn. Both of these novel get their story lines and settings from Twain life and growing up in Hannibal Missouri. Twain based these novels culturally in the United States and not in another country. If Twain would have based these novels in another country they would be considered ethnic literature is stead of â€Å"traditional† literature. These novels would have been totally different based in another culture. Life in the United States is far different then life in Africa or Nigeria. Parts of Africa are considered third world countries. Traditional America literature is based in the US. What historical, socio-political, and cultural topics might be covered by ethnic writers? How does this differ from the canon of traditional American literature? Slavery and Voting Rights are major topics covered by ethnic writers. How are the American literary themes of liberty, opportunity and equality addressed in ethnic literature? American history is full of stories about liberty, opportunity, and equality for other ethnic groups. For example Blacks had to fight for the same freedoms that where give to Whites in the early years of our wonderful nation. Many novels where written trying to Early American standards where based around slavery and oppression but now they are based on freedoms like freedom of speech and press. America has been through many time periods that has shaped it into the wonderful nation that we have today. True American literature is about life in the United States. References Casey, J. (2009). Canon Issues and Class Contexts: Teaching American Literature from a Market Perspective. Radical Teacher, (86), 18-27. Dickstein, M. (2007). Going Native: When American literature became good enough for Americans, what happened to the literary canon?. American Scholar, 76(1), 150-155. Kanellos, N. (1995). Hispanic American literature. A brief introduction and anthology. New York, NY: Addison-Wesley. Vizenor, G. (1995). Native American literature. A brief introduction and anthology. New York, NY: Addison-Wesley.

Jay Gatsby

Jay Gatsby Jay Gatsby, the main character in F. Scott Fitzgerald’s novel, The Great Gatsby, is a materialistic man, trying to live out the American Dream in the 1920’s. But, his way of life does not get him the woman of his dreams, and eventually leads to his death. He is an extremely wealthy man, but despite all of his money, is very lonely. Although he never gets the woman he wants, Gatsby was a dreamer. He was motivated to reinvent himself and buy his way through life, with a dream to recreate the past.Jay Gatsby was materialistic from the beginning. From his childhood, to his adult life, he dreamed of being rich. His parents were not wealthy and he grew up in the middle class, but he had always wanted lots of money. Nick Carraway states, â€Å"He was a son of God—a phrase which, if it means anything, it means just that—and he must be about His father’s business, the service of a vast, vulgar, and meretricious beauty† (Fitzgerald 104). No matter how he did it, Gatsby was going to be rich.From age seventeen he was determined and he would stick with his goal. According to critic Chikako D. Kumamoto, Gatsby’s â€Å"vast, vulgar, and meretricious† dream was shared by a social climbing. Nick finally figures out Gatsby’s plans with Daisy Buchannan and says, â€Å"He had waited five years and bought a mansion where he dispensed starlight to casual moths—so that he could come over some afternoon to a stranger’s garden† (Fitzgerald 80). Everything Gatsby did was to win back Daisy’s love.Being a materialist caused him to throw outrageous parties in hopes that one day, Daisy would show up to one. He believed that his money was the only way to win her over. Jay Gatsby was clearly a lonely man. He had all the money in the world to buy anything except for the woman of his dreams, Daisy. Throughout the whole novel, The Great Gatsby, he appears to be bored and alone. â€Å"Your place looks like the World’s fair† Nick Carraway says to Gatsby (Fitzgerald 86). Even to his death, no one cared enough about him to come to his funeral.Carraway tells us, â€Å"but neither a wire nor Mr. Wolfshiem arrived; no one arrived except more police and photographers and newspaper men† (Fitzgerald 110). Striving for only two things in his life never made him very popular. He threw extravagant parties, but no one knew who he was or even liked him for that matter. According to critic Brian Sutton, Gatsby goes to spectacular lengths to try to achieve what Nick Carraway calls â€Å"his incorruptible dream† (Fitzgerald 155). But, unfortunately Gatsby never gets the woman he longs for.Nick tells us, â€Å"After his embarrassment and his unreasoning joy he was consumed with wonder at her presence† (Fitzgerald 99). While Gatsby may have loved the real Daisy, the love that survived over time was of his dream-like conception of her. Jay Gatsby lived a life he dreamed of having but, he dreamed of getting Daisy back and never actually did. Nick tells Gatsby, â€Å"You can’t repeat the past† and Gatsby, being the stubborn man he is, says â€Å"Can’t repeat the past? Why of course you can! † (Fitzgerald 117). His dreams got in the way.Critic Brian Sutton states that Gatsby’s chances of winning Daisy were dead. Finding out the way Gatsby got his money ruined everything he could have had with Daisy. Throughout his whole life, Jay Gatsby would do anything to achieve â€Å"his incorruptible dream† (Fitzgerald 155). Daisy’s marriage seems so awful during most of the novel; it is almost like Gatsby is going to make his dreams come true. His efforts are so unimaginable and Daisy appears to be looking for a way out. Because Jay Gatsby is materialistic, lonely, and a dreamer, he is killed.His own attitude caused his death. Living out the American Dream, trying to become wealthy, and striving to win Daisy’s love did not pay off for Gatsby in the end. Works Cited Fitzgerald, F. Scott. The Great Gatsby. New York: Scribner, 2004. Print. Kumamoto, Chikako. â€Å"Fitzgerald’s The Great Gatsby. † Explicator 60 (Fall 2001): 37-41. Literature Resource Center. Web. 09 Nov. 2012. Sutton, Brian. â€Å"Fitzgerald’s The Great Gatsby. † Explicator 59 (Fall 2000): 37-9. Literature Resource Center. Web. 09 Nov. 2012.

The Importance Of Conductivity Profiles - 884 Words

As discussed at the start of this section, it has not been possible to manufacture an experimental sample with a well defined conductivity gradient during the course of this work. Oxidised bricks created using a thermal oxidation furnace were intended to be examined however difficulties in constructing a suitable furnace have meant that these were not available during this project. An alternative methodology based on the work of Brocklehurst [94] has been attempted to assess the ability of the reconstruction algorithm to calculate conductivity profiles from experimental data. However, first it has been necessary to determine the suitability of a lattice of holes to act as an analogue for weight-loss (equivalently a reduction in bulk†¦show more content†¦This is in spite of the fact that each of the three simulations must necessarily be solved on a di↠µerent FE mesh, which can cause significant errors (as was seen in the cracking work,  § 4.2). Based on this, the assumption that a lattice of drilled holes can be used to represent a brick with an e↠µective conductivity drop appears valid. The exact relationship between the lattice spacing of the holes and the drop in conductivity this induces is yet to be established and further models with di↠µerent lattice spacings would be required to establish this. The simulations conducted so far suggest that the lattice used on the bore surface of the brick (with a lattice spacing of 14.13 mm) gives a conductivity drop of approximately 14% whilst the lattice on the outer brick surface (with a spacing of 23.83 mm) gives approximately a 6% reduction. For further applications of this work an understanding of the relationship between these models and experimental data would be necessary as a physical network of holes may not have precisely the same e↠µect on the eddy current distribution as that predicted by FE simulation. In order to estimate the conductivity profile of the brick with a lattice of holes, the approximate conductivity reduction for the bore and peripheral lattices was calculated from the FE modelling of  § 6.2.2. This was found to be a 14% conductivity drop for the bore lattice and a 6% drop for the periphery lattice. TheseShow MoreRelatedModelling For Optimisation Of Coffee Rasting1238 Words   |  5 Pagescoffee roasting using mathematical models. 2. To predict the profile of moisture and temperature of the single bean during roasting. Understand research outputs: The main research outputs are: 1. Single-bean temperature profile during roasting (at the center). 2. Average moisture content profile during roasting. 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