The Experts below are selected from a list of 346392 Experts worldwide ranked by ideXlab platform
Xuequn Wang - One of the best experts on this subject based on the ideXlab platform.
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The Integrated User Satisfaction Model: Assessing Information Quality and System Quality as Second-order Constructs in System Administration
Communications of the Association for Information Systems, 2016Co-Authors: Nicole Forsgren, Alexandra Durcikova, Paul F. Clay, Xuequn WangAbstract:While many studies have investigated the relationship between information Systems (IS) characteristics and IS use, the results have been inconsistent. We argue that this inconsistency may be due to the modeling of information and System quality and the importance of the System usage context. We extend Wixom and Todd’s (2005) integrated model of IS satisfaction by proposing and modeling information and System quality as second-order constructs and by testing the model in the System Administration context. Our findings provide support for modeling information and System quality as second-order constructs in the integrated model. Furthermore, our findings support using additional constructs, unique to the context studied, in the integrated model. We contribute to current literature by 1) enhancing the construct validity of information and System quality, which ultimately improves statistical conclusion validity and internal validity for studies that focus on information and System quality; and 2) testing the extended model in the System Administration context. Our findings suggest that future research should measure information quality and System quality as second-order constructs and that including context-specific information and System characteristics provides researchers and practitioners with a better understanding of IS characteristics important in System Administration.
Mark Burgess - One of the best experts on this subject based on the ideXlab platform.
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Handbook of Network and System Administration
2011Co-Authors: Jan A. Bergstra, Mark BurgessAbstract:System Administration is about the design, running and maintenance of human-computer Systems. Examples of human-computer Systems include business enterprises, service institutions and any extensive machinery that is operated by, or interacts with human beings. System Administration is often thought of as the technological side of a System: the architecture, construction and optimization of the collaborating parts, but it also occasionally touches on softer factors such as user assistance (help desks), ethical considerations in deploying a System, and the larger implications of its design for others who come into contact with it.This book summarizes the state of research and practice in this emerging field of network and System Administration, in an anthology of chapters written by the top academics in the field. The authors include members of the IST-EMANICS Network of Excellence in Network Management.This book will be a valuable reference work for researchers and senior System managers wanting to understand the essentials of System Administration, whether in practical application of a data center or in the design of new Systems and data centers. - Covers data center planning and design- Discusses configuration management- Illustrates business modeling and System Administration- Provides the latest theoretical developments
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Testable System Administration: Models of indeterminism are changing IT management.
Queue, 2011Co-Authors: Mark BurgessAbstract:The methods of System Administration have changed little in the past 20 years. While core IT technologies have improved in a multitude of ways, for many if not most organizations System Administration is still based on production-line build logistics (aka provisioning) and reactive incident handling. As we progress into an information age, humans will need to work less like the machines they use and embrace knowledge-based approaches. That means exploiting simple (hands-free) automation that leaves us unencumbered to discover patterns and make decisions. This goal is reachable if IT itself opens up to a core challenge of automation that is long overdue: namely, how to abandon the myth of determinism and expect the unexpected.
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System Administration and the Scientific Method
Handbook of Network and System Administration, 2008Co-Authors: Mark BurgessAbstract:Publisher Summary In this chapter, a mixed strategy of rationality and causality is presented, which enables System administrators to formalize problems of planning and management, through a variety of methods. These methods make contact with diverse fields of research. Science, or natural philosophy, is the discourse between observation and rational approximation. It is about finding a suitably idealized description of the world by which we might summarize its essence and use the information to good effect. It begins with empiricism, or observation. There are two reasons for modeling: the first is to make sure that one's assumptions actually lead to the outcomes one imagines, through a plausible chain of cause and effect, and also to within an acceptable margin of error. The second is to make predictions about new scenarios that we have never seen, based on past observation and modeling. To gather information about a System, we must observe it and classify our observations into useful categories. Some observations are quantitative, while others are qualitative. Theory is an increasingly difficult pill to sell and swallow in this age of increasing mathematical illiteracy, and yet we need it more than ever. This overview brings together only a few of the ideas required in network and System Administration.
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LISA - Master education programmes in network and System Administration
2007Co-Authors: Mark Burgess, Karst KoymansAbstract:We report on and discuss our experiences with teaching Network and System Administration at the level of Masters at Oslo University College and the University of Amsterdam. At our respective institutions we have independently arrived at very similar models for teaching a traditionally vocational subject within an academic Computer Science framework by incorporating a strong practical component.
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On the theory of System Administration
Science of Computer Programming, 2003Co-Authors: Mark BurgessAbstract:AbstractThis paper describes a mean field approach to defining and implementing policy-based System Administration. The concepts of regulation and optimization are used to define the notion of maintenance. These are then used to evaluate stable equilibria of System configuration, that are associated with sustainable policies for System management. Stable policies are thus associated with fixed points of a mapping that describes the evolution of the System. In general, such fixed points are the solutions of strategic games. A consistent System policy is not sufficient to guarantee compliance; the policy must also be implementable and maintainable. The paper proposes two types of model to understand policy driven management of Human-Computer Systems: (i) average dynamical descriptions of computer System variables which provide a quantitative basis for decision, and (ii) competitive game theoretical descriptions that select optimal courses of action by generalizing the notion of configuration equilibria. It is shown how models can be formulated and simple examples are given
Cary Collett - One of the best experts on this subject based on the ideXlab platform.
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Red Hat Linux System Administration Handbook
1999Co-Authors: Mark F. Komarinski, Cary CollettAbstract:Manage your Red Hat Linux Systems for maximum productivity!Red Hat Linux 6.0 delivers cost-effective, rock-solid networking and Internet connectivity - and with the Red Hat Unux System Administration Handbook, anyone can administer a Red Hat Linux System successfully!Two top Linux experts walk you step-by-step through everything you'll need to know about Linux networking, user accounts, file and print services, email, security, backups, and much more. You'll get practical, hands-on guidance for configuring your hardware and peripherals - and maximizing the performance of your Linux System.Coverage includes: Technical and practical explanations of every major System Administration task Deploying Web services, NetNews, FTP, X Windows, Samba, and more Managing Linux in heterogeneous networked environments Handling Linux System upgrades, and moreYou'll find all-new chapters on installation, the PAM Red Hat Security Model, the Red Hat package manager, and the latest 2.2 kernel enhancements - plus detailed coverage of managing Red Hat Linux with the GNOME graphical user interface. If you want to make the most of Red Hat Linux - with the least effort - you want Red Hat Linux System Administration Handbook!
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UNIX System Administration Handbook
1998Co-Authors: Mark F. Komarinski, Cary CollettAbstract:1. Introduction. Oh no! Not another Linux book. Linux Theory. Is it really free? Why Linux? Is Linux SYSV or BSD? Support. What you need. 2. Linux Boot and Shutdown. LILO. Kernel Boot. Init. What's a runlevel? When Something Goes Wrong. System Shutdown. Shutdown Command. CTRL-ALT-DELETE. Keeping a PC safe from reboots. Review. 3. User Administration. Adding users. Groups. The /etc/skel directory. Deleting or Disabling Users. When to Disable and When to Delete. Using Shadow Passwords. Interaction with Users. RPM. Using RPM. 4. Shells. Common Features. Wildcards. History. Environment variables. Pipes and redirection. Filename and command completion. sh. Environment variables. For loops. While loops. tcsh. Environment variables. For loops. While loops. 5. Networking with Linux. TCP/IP. Ethernet. Connecting to an Ethernet Network. PPP. PPP Client. PPP Server. INETD. /etc/services. /etc/inetd.conf. Network Applications. DNS. Should you be a DNS server? named.boot. named.ca. DNS Database Records. Reverse DNS. Nslookup. NFS. 5.4 AppleTalk. Hardware Considerations. Typical Installation. Applesharing your printer. Printing to a Remote Appletalk Printer. 5.5 NIS. How NIS works. NIS Client. NIS Server. Using NIS. 6. Printing and Print Sharing. Connecting Printers to Linux. Serial vs. Parallel vs. Ethernet printers. Configuring the printer. Print Filters. Printers on the network! UNIX. SMB (Windows Networking). Managing Print Queues. Summary. 7. E-mail. Using m4 files. You have mail! MIME. The .forward file. Remote e-mail (POP and IMAP). POP. IMAP. Mailing Lists. Majordomo. 8. Internet Agencies. InterNIC. Registering a Domain. Whois. CERT. CIAC. 9. Samba. Setting up a MS Windows Network. What you'll need. What's a Workgroup? Install TCP/IP Stack. Installing Samba. Installing Linux Printers on Windows. 10. NetNews. INN Pre-Installation Considerations. Space Considerations. Memory Considerations. Other Performance Considerations. Setup, Obtaining, and Unpacking INN. Compiling and Installing INN. INN Internals. Rc.news. Innwatch. Innd. Logging. The Active and History Files. NNRP. nnrp.access. inews. rnews. NNTP. Authentication. Control Messages. Newsfeeds. Nntpsend. The Overview Database. Creating and Removing Newsgroups. Adding and removing Newsfeeds. Reloading the Server. Stopping and Starting Connections. Expiring and Reporting. Article Expiration. Log Rotation and Reporting. INN Configuration and Testing. Obtaining a Usenet Feed and Exchanging News. Common Error Messages And What They Mean (Taken from the INN FAQ). Where to Look for Help. Web Sites: Newsgroups: Mail Addresses: 11. Setting Up FTP Services. Anonymous FTP. Setting up anonymous FTP. FTP access for user accounts. FTP-only accounts. Virtual FTP hosts. tftp. FTP clients. ftp. NcFTP. XFTP. Summary. 12. Applications for Linux. Office Products, word processors and editors. Applixware. Staroffice. WordPerfect. Plan. NExS. TeX/LaTex. Xemacs. Drawing, graphics, and image viewing and manipulation. Xv. Gimp. Xfig. Xpaint. Mapedit. Scientific Programs. Maple. Mathematica. Emulators. Executor. Wabi. WINE. Dosemu. Acrobat. LessTif. Summary. 13. Linux Database Software. MySQL and mSQL. mSQL. Lite and W3-mSQL. Differences Between Versions 1 and 2. Some Other Notes. MySQL. Installing MySQL. Compiling and Installing MySQL. Installing From a Binary Distribution. Setting up the Grants Database and Other Data Files. Contributed Software for MySQL. xmysql: A GUI for MySQL. Other Native Linux DMBSs. Freeware. PostgresSQL. Commercial. Solid. Empress. Texpress. Essentia. Other Databases with Partial Support. Sybase. Oracle. Summary. 14. Programming Languages. C. C++. Perl. Python. Python and GUIs. Python on Other Platforms. Lisp and Scheme. Java. Tcl/Tk. SQL. Other Languages. Oldies but goodies. FORTRAN. BASIC. Pascal. COBOL. Of More Recent Vintage. Smalltalk. Icon. Rexx. Eiffel. Sather. Summary. 15. Web Serving. A Note on Other Information Services. Web Server Software. Encryption, the Web and Uncle Sam. Non-SSL severs: SSL servers: Hardware Issues. Apache and ApacheSSL/Stronghold. Getting Started. and .htaccess. CGI and SSI. Web Pages for Your Users. Restricting the Use of CGI and SSI. Other Useful Modules and Directives. Extensions for Apache. PHP/FI. SSL: Secure Sockets Layer. The httpd.conf. Logging. Databases and Web Servers. Setting up a Killer Web Server. mSQL. PHP. Apache. Summary. 16. X Windowing System. X Concepts. Setting up X. XDM. Using the X Window Managers. MWM. FVWM. FVWM2-95. Focus. Menus. Modules. User programs. X RESOURCES. X APPLICATIONS. Using Remote Displays. Commercial X Products. Xservers. AcceleratedX. Metro-X. X Libraries. Motif. OpenGL. CDE. 17. Securing Linux. Physical Security. Software Security. Monitoring software. Preventing root logins. Secure Shell (SSH). Denial Of Service Attacks. Network Security. PGP. 18. Kernel Administration. Customizing Your Kernel. Which Kernel?. Getting Ready. Adding Kernels to LILO. Modules or Compiled In? Dive On In! Configuring the Kernel. Code Maturity Options. Loadable Module Support. General Setup. Floppy, IDE, and Other Block Devices. Networking Options. SCSI Support. SCSI Low-Level Drivers. Network Device Support. ISDN SubSystem. CD-ROM Drivers (not for SCSI or IDE/ATAPI drives). FileSystems. Character Devices. Sound. Kernel Hacking. Compile the Kernel and Modules. Summary. 19. System Monitoring. Facilities and Priorities. Actions. Logging Procedures. 20. Backing Up Your Data. tar and mt. cpio. dump and restore. Commercial Back-Up Products. BRU. PerfectBACKUP+. BACKUP/9000. Backup Strategies. RAID and Disk Mirroring. 21. Talking to Your Peripherals. Scanners. Modems. Tape Drives. UPS. Adding a New Hard Drive. Zip and Jaz drives. Installing a Zip drive. Installing a Jaz drive. Caveats. Using the drive. Summary. 22. Linux Distributions and Upgrading Your System. Supported and Work-In-Progress Architectures. Commercial Linux Distributions. Caldera. RedHat.2 WGS. Slackware. Linux on Sparc. Updating Your System. Upgrading Your Distribution and Kernel. 23. Connecting to the Internet. OVERVIEW. SOFTWARE VERSIONS. NETWORKING. NAMESERVICES. PPP. DIALD. IP MASQUERADING. Appendix A. 5. Networking: 7. E-mail. 8. Internet Agencies. 9. Samba. 10. Netnews. 11. FTP. 12. Desktop Applications. 13. Databases. 14. Programming Languages: 15. Web Serving, 286. 16. X. 20. Backups. 21. Peripherals. 22. Distributions. 24. Connecting to the Internet. Other resources.
Nicole Forsgren - One of the best experts on this subject based on the ideXlab platform.
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The Integrated User Satisfaction Model: Assessing Information Quality and System Quality as Second-order Constructs in System Administration
Communications of the Association for Information Systems, 2016Co-Authors: Nicole Forsgren, Alexandra Durcikova, Paul F. Clay, Xuequn WangAbstract:While many studies have investigated the relationship between information Systems (IS) characteristics and IS use, the results have been inconsistent. We argue that this inconsistency may be due to the modeling of information and System quality and the importance of the System usage context. We extend Wixom and Todd’s (2005) integrated model of IS satisfaction by proposing and modeling information and System quality as second-order constructs and by testing the model in the System Administration context. Our findings provide support for modeling information and System quality as second-order constructs in the integrated model. Furthermore, our findings support using additional constructs, unique to the context studied, in the integrated model. We contribute to current literature by 1) enhancing the construct validity of information and System quality, which ultimately improves statistical conclusion validity and internal validity for studies that focus on information and System quality; and 2) testing the extended model in the System Administration context. Our findings suggest that future research should measure information quality and System quality as second-order constructs and that including context-specific information and System characteristics provides researchers and practitioners with a better understanding of IS characteristics important in System Administration.
Nijaz Bajgoric - One of the best experts on this subject based on the ideXlab platform.
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System Administration for business continuity – the case of HP-UX operating System
International Journal of Business Continuity and Risk Management, 2012Co-Authors: Nijaz BajgoricAbstract:The paper explores the roles of System Administration as an IT-operation and System administrator as an IT-specialist from business continuity perspective. It aims at identifying the most critical System administrator’s activities and server operating System’s features for achieving high availability ratios and hence enhancing business continuity. HP’s HP-UX as a server operating System is selected as a case. A thorough list of main System Administration commands, tools, techniques and technologies on the HP-UX operating platform that are crucial for enhancing business continuity are identified. The paper is presented in a form of case study combined with the Systems approach in exploring modern server operating environments, System Administration, availability and business continuity. The paper can be used to identify a framework for defining additional skills of System administrators and necessary features of server operating environment within the efforts of enhancing high availability ratios and busin...
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System Administration for business continuity – the case of HP-UX operating System
International Journal of Business Continuity and Risk Management, 2012Co-Authors: Nijaz BajgoricAbstract:The paper explores the roles of System Administration as an IT-operation and System administrator as an IT-specialist from business continuity perspective. It aims at identifying the most critical System administrator's activities and server operating System's features for achieving high availability ratios and hence enhancing business continuity. HP's HP-UX as a server operating System is selected as a case. A thorough list of main System Administration commands, tools, techniques and technologies on the HP-UX operating platform that are crucial for enhancing business continuity are identified. The paper is presented in a form of case study combined with the Systems approach in exploring modern server operating environments, System Administration, availability and business continuity. The paper can be used to identify a framework for defining additional skills of System administrators and necessary features of server operating environment within the efforts of enhancing high availability ratios and business continuity.
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System Administration and System Administrator's Role in Business Continuity
Continuous Computing Technologies for Enhancing Business Continuity, 2009Co-Authors: Nijaz BajgoricAbstract:Chapter IX focuses on the role of System Administration as an IT-profession and System administrator as a person who does the administrative (managerial) activites on servers and server operating Systems. If server goes down for any reason or server operating System crashes, in most cases it is up to this person to “recover” the server from the bad situation and make sure that business – critical applications continue to run and provide services to end users. HP-UX as a server operating System platform is selected in order to demonstrate most commonly used techniques and features that may lead to higher levels of System availability.
