A mobile operating system (mobile OS) is an OS built exclusively for a mobile device‚ such as a smartphone‚ personal digital assistant (PDA)‚ tablet or other embedded mobile OS. Popular mobile operating systems are Android‚ iOS and Windows Phone. A mobile OS is responsible for identifying and defining mobile device features and functions‚ including keypads‚ application synchronization‚ email and text messaging. Android OS is owned by Google and powered by the Linux kernel‚ it debuted in 2007.
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Toward a Cloud Operating System Fabio Pianese Peter Bosch Alessandro Duminuco Nico Janssens † Thanos Stathopoulos Moritz Steiner Alcatel-Lucent Bell Labs Service Infrastructure Research Dept. †Computer Systems and Security Dept. {firstname.lastname}@alcatel-lucent.com Abstract—Cloud computing is characterized today by a hotchpotch of elements and solutions‚ namely operating systems running on a single virtualized computing environment‚ middleware layers that attempt to combine
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After establishing a unique business model in the airline industry‚ Southwest has had its fair share of imitators. Yet none of these efforts at reproducing the success of Southwest have reached expectations. There are many reasons why imitators of Southwest have struggled so much but one of the biggest is the success of Southwest’s human resource management. Southwest is able to pay its employees less than the other major airlines yet get more production out of them. This is due to Southwest’s family
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Case Study 1 – Southwest Airlines 1. To what do you attribute the success of Southwest Airlines? The success of Southwest Airlines was mainly attributed to their innovative high-volume‚ low-margin business model‚ which included cutting flight prices dramatically‚ using their fleet at maximum capacity‚ and entertaining marketing gimmicks. Southwest’s flight structure took advantage of low-density airports and underserved areas and was comprised of a two-tiered pricing structure that books
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1. In a multiprogramming and time sharing environment‚ several users share the system simultaneously. This situation can results in various security problems. a. What are the two such problems? Ans: The two problems in Multiprogramming and time sharing environment are Stealing or copying a user’s files; Writing over another program’s (belonging to another user or to the OS) area in memory; Using system resources (CPU‚ disk space) without proper accounting; Causing the printer to mix output by
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This page intentionally left blank Operating Systems in Depth This page intentionally left blank OPERATING SYSTEMS IN DEPTH Thomas W. Doeppner Brown University JOHN WILEY & SONS‚ INC. vice-president & executive publisher executive editor executive marketing manager production editor editorial program assistant senior marketing assistant executive media editor cover design cover photo Donald Fowley Beth Lang Golub Christopher Ruel Barbara Russiello Mike Berlin
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Chapter 5 Operating and Financial Leverage Discussion Questions |5-1. |Discuss the various uses for break-even analysis. | | | | | |Such analysis allows the firm to determine at what level of operations it will break even (earn zero profit) | | |and to explore
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JR Background Southwest: of June 18‚ 1971: Headquartered at Love Field in Dallas‚ it began flying with three Boeing 737 serving following Texas cities: Dallas‚ Houston‚ and San Antonio 2002: Recognized by Fortune magazine as the most admired Airline Company and listed in “100 Best Corporate Citizen” by Business Ethics 2004: Total operating revenue of $6.5 billion and 31‚000 employees. Evaluation Problem: 1. What is Southwest’s Strategy? 2. What is the basis on which Southwest build its competitive
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HISTORY OF OPERATIMG SYSTEMS Operating systems (OS) provide a set of functions needed and used by most application programs on a computer‚ and the linkages needed to control and synchronize computer hardware. On the first computers‚ with no operating system‚ every program needed the full hardware specification to run correctly and perform standard tasks‚ and its own drivers for peripheral devices like printers and punched paper card readers. The growing complexity of hardware and application programs
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2.1 TYPES OF OPERATING SYSTEM A. Batch Operating System- Batch processing is the most primitive type of operating system. Batch processing generally requires the program‚ data‚ & appropriate system commands to be submitted together in the form of a job. Batch operating systems usually allow little or no interaction between users & executing programs. Examples of such programs include payroll‚ forecasting‚ statistical analysis‚ & large scientific number-crunching programs. Serial processing combined
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