evolution of modern operating systems ppt

... look at the [/O software First we will look at the goals of the VO software and then at the difterent ways Trang 12 SEC S.5 PRENCIPLES OF 1/0 SOFTWARE 283 §.2.1 Goals of the /O Software A key ... differences may also be hidden 5.3.4 User-Space VO Software Although most of the 1/O software is within the operating system, a small por- uon of it consists of librarics linked logether with user progratns, ... INPUT/OUTPUT CHAP 5 User-level |/O software Device-independent operating system software Device drivers Interrupt handlers Hardware Figure 5-10 Layers of the 1 software system When the interrupt

Ngày tải lên: 09/08/2014, 09:21

... of W( f ), the gradient −→ ∇ W J(W, α, β) have a component which is opposite to the direction of the minimum. The algorithm of gradient descent [12]advances W( f ) in the opposite direction of ... Mounted Transducers. In the case of coaxial loudspeaker systems [7] and based on axial symmetries (around the [Oz) axis for the system of Figure 1), the expression of the matrix L( f )in(3) used ... measurements of the frequency responses neces- sary for determining the directivity characteristics of the loudspeaker system were made in an anechoic room of size 6 × 7 × 8m 3 . The block diagram of the

Ngày tải lên: 21/06/2014, 08:20

... 16 1.3 THE OPERATING SYSTEM ZOO 18 1.3.1 Mainframe Operating Systems 18 1.3.2 Server Operating Systems 19 1.3.3 Multiprocessor Operating Systems 19 1.3.4 Personal Computer Operating Systems 19 ... touch upon seven of them We will come back to some of these different kinds of systems faicr in the book 1.3.1 Mainframe Operating Systems Al the bigh end are the operating systems for the maintrames ... one of the designers of the VAX VMS operating system so some ideas from VMS are present in NT Micro- soft expected that the first version of NT would AUE off MS-DOS and al! other ver- sions of

Ngày tải lên: 09/08/2014, 09:21

... the operating system is unattractive Besides, one of the arguments for user-level threads was precisely that they could run with EXISTING operating systems In addition, changing the semantics of ... package can be implemented on an operating system that does not support threads All operating systems used to fall into this category and even now some stil] do All of these implementations have ... Trang 2 2.2 THREADS In traditional operating systems, each process has an address space and ä sìn- gle thread of controi In fact, that is almost the definition of a process Neverthe- less, there

Ngày tải lên: 09/08/2014, 09:21

... 1 7 Cc C C G Cc 22 B B B 8 Z ⁄Z a A A A 2 22 7 D D D Operating Operating Operating Operating Operating Operating Operating system system system system system system system (a) ... job of the operating system to coordinate how these memories are used The part of the operating system that manages the memory hierarchy is called the memory manager Jis job is to keep track of ... a small amount of very fast, expensive, volatile cache memory, tens of megabytes of medium-speed, medium- price, volatile main memory (RAM), and tens or hundreds of gigabytes of slow, cheap,

Ngày tải lên: 09/08/2014, 09:21

... Address of disk block 0 i Address of disk block T re Address of disk block 2 _———> Address of disk block 3 —_ Address of disk Dlock 4 ——> Address of disk block 5 "———>- Address of disk ... king, many (mainframe) operating systems based their file systems on files consisting of 80-character records in effect, card images These systems also supported files of 132-character records, ... to the end of the file Systems that provide a minimal set of system calls do not generally have append, but many systems provide multi- ple ways of doing the same thing, and these systems sometimes

Ngày tải lên: 09/08/2014, 09:21

... amount of research about it Much of this research is about the content, construction tools, and applications, all of which are beyond the scope of this book However, some of tt involves operating ... there is still a factor of five compression using the JPEG-like encoding.) Trang 5 468 MULTIMEDIA OPERATING SYSTEMS CHAP 7 MPEG-2 output consists of three different kinds of frames that have to ... number of processes, in this case, 3 Note that P;/C; is just the fraction of the CPU being used by process / For the example of Fig 7-11, A is ealing 10/30 of the CPU, B is eating 15/40 of the

Ngày tải lên: 09/08/2014, 09:21

... algorithms Distributed systems are Joosely coupled systems each of whose nodes is a compiete computer with a complete set of peripherals and its own Operating svs- tem Often these systems are spread ... tuples are untyped Each entry consists of some number of fields, each of which has a basic Java type For example, an entry of type employee might consist of a string (for the name), an integer ... real-world protection of information on paper, but some of which are unique to computer systems In this chapter we will examine Computer security as it applies to operating systems Trang 25 9.1

Ngày tải lên: 09/08/2014, 09:21

... still modern and elegant Many important design principles are illustrated by UNIX Quite a few of these have been copied by other systems Our discussion of UNIX will start with its history and evolution ... workstations from a variety of vendors, A number of companies even licensed the source code to make their own version of UNIX One of these was a small startup called Microsoft, which sold Version ... majority of the users are relatively saphists- cated and are engaged in (often quite complex) software development projects In many Cases, a large number of programmers are actively cooperating

Ngày tải lên: 09/08/2014, 09:21

... distribution of the in- and out-degrees governs the potential for the. .. functions 14 The Robust-Yet-Fragile Nature of Financial Systems the distribution of the number of links ... probability of contagion... region, the size of the giant vulnerable cluster corresponds closely to the size of the connected component of the network, meaning that the fraction of ... story-telling capability of RAMSI While other approaches to systemic risk modelling offer either rigour in terms of microfoundations or consistency with market-based pricing of risk,... interdependencies

Ngày tải lên: 01/11/2014, 18:15

... Survey of Network Operating Systems (NOS)      Introduction Novell Operating Systems Microsoft Network Operating Systems Other Network Operating Systems NOS in Multivendor ... Environments Introduction to Network Operating Systems (NOS)     Coordinating Hardware and Software Multitasking Software Components Choosing a Network Operating System Network Server Local ... Novell Operating Systems    Introduction to NetWare NetWare Services Interoperability NetWare Security    Logon Security Trustee Rights Directory and File Attributes Microsoft Network Operating

Ngày tải lên: 15/05/2017, 14:44

... Computer Operating Systems 33 1.4.6 Embedded Operating Systems 33 1.4.7 Sensor Node Operating Systems 34 1.4.8 Real-Time Operating Systems 34 1.4.9 Smart Card Operating Systems 35 1.5 OPERATING ... CONTENTS 1.4 THE OPERATING SYSTEM ZOO 31 1.4.1 Mainframe Operating Systems 32 1.4.2 Server Operating Systems 32 1.4.3 Multiprocessor Operating Systems 32 1.4.4 Personal Computer Operating Systems 33 ... coverage of TCP/IP and the Internet Operating Systems: Design and Implementation, 3rd edition This popular text on operating systems is the only book covering both the principles of operating systems

Ngày tải lên: 16/05/2017, 10:06

... terminal point of one system and simultaneously the initial condition of the other Thus, the relationship of two systems (2.4) and (2.5) will determine the behavior of all trajectory of Eq (2.3) ... consider the evolution of a system composed of two predator–prey deterministic systems described by Lotka–Volterra equations in random environment It is proved that under the influence of telegraph ... with connections of two deterministic predator–prey systems In Section 4, it is shown that, if the rest points of two these deterministic systems not coincide, all trajectories of the system perturbed

Ngày tải lên: 16/12/2017, 14:43

... The Evolution of TV Systems, Content, and Users Toward Interactivity Foundations and Trends in Human–Computer Interaction: 2(4): 279–374 http:/dx.doi.org/10.1561/1100000008 The evolution of TV systems, ... place Annals of the Association of American Geographers 82(1): 117-135 Adomavicius, G and Tuzhilin, A 2005 Toward the next generation of recommender systems: a survey of the state -of- the-art and ... conception of a specific task to be performed by a user An important element in the process of usability evaluation is the notion of the user task A user task consists of a finite number of steps

Ngày tải lên: 03/12/2019, 17:03

... analysis, and design techniques for these systems AI planning systems are examples of AI problem solving systems When comparing the characteristics of AI and non-AI systems, one can make the following ... in conventional systems is typically higher than that of AI systems The abstractness and generality of the models used in AI systems is high compared with the fine granularity of models used in ... power can hinder the development of some functional components of the planner, and of the analysis, verification, and validation of planning systems The generality of developed planning techniques

Ngày tải lên: 14/12/2013, 12:15

... quasi-religious attitudes 406 CHAPTER 6. EVOLUTION OF GSM AND CDMAONE TO 3G SYSTEMS of engineers towards methods of multiple access. The meagre spectrum of 1.25 MHz at the top of the AMPS band was just about ... Chapter 6 Evolution of GSM and cdmaOne to 3G Systems. Chapter 6 Evolution of GSM and cdmaOne to 3G Systems 6.1 Introduction The previous chapters have ... rates of up to 9.6 kb/s. However, the Phase 2+ 412 CHAPTER 6. EVOLUTION OF GSM AND CDMAONE TO 3G SYSTEMS Table 6.2: The MS multislot classes. Multislot Maximum number of slots Minimum number of

Ngày tải lên: 23/12/2013, 17:15

... With Less. The designers of PHP offer you the full spectrum of PHP solutionsThe designers of PHP offer you the full spectrum of PHP solutions IINNDDEEXX Departments TABLE OF CONTENTS February 2003 ... the software for the encoding of large numbers of files easy and convenient. As you can see, the interface is based on the concept of a “project”—this way, you can encode entire direc- tories of ... in assuring the accuracy of the contents of this mag- azine, including all associated source code, listings and figures, the publisher assumes no responsibil- ities with regards of use of the information

Ngày tải lên: 17/01/2014, 18:20

... Mechanical Systems 401 10.1 Introduction 401 10.2 Classification of Robotic Mechanical Systems with Regard to Dynamics 402 10.3 The Structure of the Dynamics Models of Holonomic Systems4 03 ... Shabana, Theory of Vibration: An Introduction, 2nd ed. A.A. Shabana, Theory of Vibration: Discrete and Continuous Systems, 2nd ed. TLFeBOOK Jorge Angeles Fundamentals of Robotic Mechanical Systems Theory, ... Marshek University of Texas, Austin Energetics J.R. Welty University of Oregon, Eugene Mechanics of Materials I. Finnie University of California, Berkeley Processing K.K. Wang Cornell University Production Systems

Ngày tải lên: 19/01/2014, 18:20

... Strategic Planning Division, Directorate of Plans, Hq USAF. Library of Congress Cataloging-in-Publication Data Lambeth, Benjamin S. Combat pair : the evolution of Air Force-Navy integration in strike ... Doctrine Program of RAND Project AIR FORCE as a part of a fiscal year 2006 study titled “Exploring New Concepts for Joint Air- Naval Operations.” iv Combat Pair: The Evolution of Air Force–Navy ... 27 CHAPTER SIX Continued Sources of Navy–Air Force Friction 33 CHAPTER SEVEN A Convergence of Integration over Afghanistan 45 v vi Combat Pair: The Evolution of Air Force–Navy Integration in

Ngày tải lên: 17/02/2014, 23:20

... parD of plasmid R1 established the early history of bacterial type II TA systems In this review, we focus on parD of R1 and the ccd system of F whose toxins belong to the same superfamily We often ... Roles of chromosomal TA systems The discovery of chpA (chpAI, chpAK) and chpB (chpBI, chpBK) TA systems in the bacterial chromosomes raised the question of their role in this new context Genes of ... result of the stimulation by DnaB of the synthesis of short RNAs by DnaG primase [117]; some of these RNA primers could titrate the RNase activity of Kid or could bind to the active site of the

Ngày tải lên: 18/02/2014, 04:20