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  • Archive for the 'Computers & internet' Category


    MIS- Structure and classification

    Posted by vinny_kaushal on 27th July 2008

     

    Different levels of management

    Top-level management

    • Top-level managers require an extensive knowledge of management roles and skills.
    • They have to be very aware of external factors such as markets.
    • Their decisions are generally of a long-term nature.
    • They are responsible for strategic decisions.
    • They have to chalk out the plan and see that plan may be effective in future.
    • They are executive in nature.

    Middle management

    • Mid-level managers have a specialized understanding of certain managerial tasks.
    • They are responsible for and carrying out the decisions made by top-level management.
    • They are responsible for tactical decisions.

    Lower management

    • This level of management ensures that the decisions and plans taken by the other two are carried out.
    • Lower-level managers’ decisions are generally short-term ones.

     

     

     

     

    Four General Kinds of IS 

    • Operational-level systems
      • support operational managers by monitoring the day-to-day’s elementary activities and transactions of the organization.  e.g. TPS.
    • Knowledge-level systems
      • support knowledge and data workers in designing products, distributing information , and coping with paperwork in an organization.  e.g. KWS, OAS
    • Management-level systems
      • support the monitoring, controlling, decision-making, and administrative activities of middle managers. e.g. MIS, DSS
    • Strategic-level systems
      • support long-range planning activities of senior management.  e.g. ESS

    OPERATIONAL SUPPORT SYSTEM

    Transaction processing system (TPS):

    A TPS collects and stores information about transactions, and controls some aspects of transactions. A transaction is an event of interest to the organisation. e.g. a sale at a store.

      Computerized system that performs and records the daily routine transactions necessary to conduct the business; these systems serve the operational level of the organization 

    • TYPE: Operational-level
    • INPUTS: transactions, events
    • PROCESSING: updating
    • OUTPUTS: detailed reports
    • USERS: operations personnel, supervisors
    • DECISION-MAKING: highly structured

     

    EXAMPLE: payroll, accounts payable

     

     

    Office automation system (OAS) :

    OAS provides individuals effective ways to process personal and organisational data, perform calculations, and create documents.
    e.g. word processing, spreadsheets, file managers, personal calendars, presentation packages
    For are used for increasing personal productivity. They reduce “paper warfare”. OAS software tools are often integrated (e.g. Word processor can import a graph from a spreadsheet) and designed for easy operation.

    Computer system, such as word processing, electronic mail system, and scheduling system, that is designed to increase the productivity of data workers in the office. 

    • TYPE: Knowledge-level
    • INPUTS: documents, schedules
    • PROCESSING: document management,  scheduling, communication
    • OUTPUTS: documents; schedules
    • USERS: clerical workers

     EXAMPLE: document imaging system

     

    MANAGEMENT SUPPORT SYSTEMS

    Management information system (MIS) :

    It converts TPS data into information for monitoring performance and managing an organisation. Transactions recorded in a TPS are analyzed and reported by an MIS.

    They have large quantities of input data and they produce summary reports as output. Used by middle managers. An example is an annual budgeting system.

    information system at the management level of an organization that serves the functions of planning, controlling, and decision making by providing routine summary and exception reports. 

    • TYPE: Management-level
    • INPUTS: high volume data
    • PROCESSING: simple models
    • OUTPUTS: summary reports
    • USERS: middle managers
    • DECISION-MAKING: structured. to semi- structured.

    EXAMPLE: annual budgeting

     

    Decision support system (DSS):

    It  helps strategic management staff (often senior managers) make decisions by providing information, models, or analysis tools. For support of semistructured and unstructured decisions (structured decisions can be automated). Used for analytical work, rather than general office support.

    They are flexible, adaptable and quick. The user controls inputs and outputs. They support the decision process and often are sophisticated modelling tools so managers can make simulations and predictions.

     Information system at the management level of an organization that combines data and sophisticated analytical models or data analysis tools to support semi- structured and unstructured decision making. 

    • TYPE: Management-level
    • INPUTS: low volume data
    • PROCESSING: simulations, analysis
    • OUTPUTS: decision analysis
    • USERS: professionals, staff managers
    • DECISION-MAKING: semi-structured

     

    EXAMPLE: sales region analysis

      Characteristics of Decision-Support Systems

    1. DSS offer users flexibility, adaptability, and a quick response.

    2. DSS operate with little or no assistance from professional programmers.

    3. DSS provide support for decisions and problems whose solutions cannot be specified in advance.

    4. DSS use sophisticated data analysis and modelling tools.

     

    Executive information system (EIS):

    Also known as an Executive Support System (ESS), it provides executives information in a readily accessible, interactive format. They are an MIS for executive use. An EIS/ESS usually allows summary over the entire organisation and also allows drilling down to specific levels of detail.

    Used by top level (strategic) management. They are designed to the individual. They let the CEO of an organisation tie in to all levels of the organisation. They are very expensive to run and require extensive staff support to operate.

    Information system at the strategic level of an organization that address structured king through advanced graphics and communications.

    TYPE: Strategic level

    • INPUTS: aggregate data; internal and external
    • PROCESSING: interactive
    • OUTPUTS: projections
    • USERS: senior managers
    • DECISION-MAKING: highly unstructured

     

    EXAMPLE: 5 year operating plan

     

     

     

    Classification of IS  by Functional Area

    • The accounting system information
    • The finance information system
    • The manufacturing (operations, production) information system
    • The marketing information system
    • The human resources information system

     

     Sales & Marketing Systems

    • Systems that help the firm identify customers for the firm’s products or services, develop products and services to meet customer’s needs, promote products and services, sell the products and services, and provide ongoing customer support.

     
     

    Manufacturing and Production Systems

    • Systems that deal with the planning, development, and production of products and services and with controlling the flow of production.

    Finance and Accounting Systems

    • Systems that keep track of the firm’s financial assets and fund flows.

    Human Resources Systems

    • Systems that maintain employee records; Track employee skills, job performance, and training; And support planning for employee compensation and career development.

    Posted in Computers & internet | No Comments »

    Calls to India @ Rs. 1 per minute

    Posted by kumar on 17th June 2008

    Hi Buddies,

    Some time back I informed you about VoipRaider (www.voipraider.com) which is charging about Rs. 1.5- Rs. 1.7 per minute for calls to India. Now I found even better service, InterVoip (www.intervoip.com) which is charging Rs. 1 per minute for calls to India Mobile. The charges (per minute) are approx. 1.5 Cents (Euro) or approx. 2.3 Cents (USD) or approx. 7.5 Sen (MYR) .This is even much cheaper than local calls in any of countries in America, Europe or Malaysia. Just visit the website www.intervoip.com for more information and subscribing to the service. Both of these services are provided by BetaMaxVoip (which provides few other good calling services like voip buster, voipcheap,voipstunt,voipdiscount ,lowratevoip etc.). We’ll keep you informed about other services which come from time to time, so keep visiting this blog and bookmark it, and/or subscribe RSS feeds.

     Enjoy Your Calls !!!

    Posted in Computers & internet, Info | No Comments »

    Some Useful Anti Hacking Tools

    Posted by kumar on 16th June 2008

    Hacking isn’t what it use to be in the days when networks were breached by young hackers sitting in their bedrooms late at night trying out their newly learned skill from a BBS board. Today’s hacking is carried out by preprogrammed viruses that, self propagate themselves around the world and trying every computer port and over-flow that will have them. Finding the right tools for you and your company can be an endless search on the Internet that can produce the results of software from no name companies with no proven record. Software sales people will boast that their software is the best on the market, but you can’t trust a sales person to tell you the truth. So you must either rely on your own product research or the names the software vendor gives you from satisfied companies. 

    Listed below are some Anti-hacking software put together that I think can be relied on, for your home or office protection, and even a couple you can put on your mothers computer.

    (Office) ISS 
    Internet Security Systems (ISS)
    is an established world leader in Internet security, with products and services that protect against Internet threats. ISS’ Proventia™ unified protection products deliver simpler, smarter, more cost-effective Internet security, backed by the world’s largest security research and development team. ISS also offers Managed Services and Professional Services to assist organizations in identifying and addressing online risk.

    (Home) The Shield Pro 2004™  
    The Shield Pro provides essential protection from viruses, hackers, and privacy threats. Powerful yet easy to use, protect yourself, your family, and your PC online with The Shield Pro 2004™. The Shield Pro 2004™ gives you 1 year of protection and PC Security Shield gives you all the technical support you need to successfully protect yourself.

    (Home) ZoneAlarm Pro
    Zone Alarm Pro is an easy to use program that instantly provides world-class protection against Internet-borne threats including worms, Trojan horses, and spyware.

    (Office) Riverhead Networks
    Riverhead Networks delivers the industry’s most complete and powerful family of solutions for detecting and defeating today’s most complex and sophisticated DDoS attacks. Unlike other solutions, the Riverhead products not only detect the presence of a DDoS attack, but actually identify and block the malicious flows in real time — without affecting the flow of legitimate, mission-critical transactions. The result: your business keeps running, even while under withering attack, protecting your most valuable corporate assets.

    (Home/Office)ippl
    What is ippl?

    ippl is a daemon which logs IP packets sent to a computer. It runs in the background, and displays information about the incoming packets.Criteria can be used to specify what packets should be logged and what packets should be ignored. 

     

     

    (Office)Intrusion SecureHost
    Instead of detecting and then reacting to an attack after the damage has been done, SecureHost prevents the attack from occurring in the first place. SecureHost automatically defines application behaviors that are acceptable based on corporate policy. When any of the rules for proper application behavior are violated, SecureHost stops the activity before any damage is done.

    (Home / Office) ScanLogd
    scanlogd is a TCP port scan detection tool, originally designed to illustrate various attacks an IDS developer has to deal with.

    (Office) SecurVantage Enterprise
    SecurVantage Enterprise allows multiple monitoring points to be combined into a single, real-time monitoring and management console. This provides a common operational picture across multiple policy domains. With SecurVantage Enterprise, real-time conformance data is viewable through a web browser and can be presented in a variety of reports, ranging from general network health to host-level service behavior

    (Office) NFR
    With NFR Security’s intelligent intrusion management system, you’ll not only detect and deter network attacks, you also integrate with popular firewall providers to prevent future attacks. Here are twelve reasons a leading business journal refers to NFR as “the Holy Grail” of intrusion management.

    (Home / Office) OpenWall Project
    The OpenWall Project is loaded with hacker and anti-hacker programs that will help the network administrator/engineer with security related issues.

    (Home / Office) Verified Security Software
    Specializing in security and privacy solutions; ranging from PC monitoring, encryption, to hacker protection and secure data storage.

    Posted in Computers & internet | No Comments »

    Tips, Comparison, Reviews of Antivirus, internet security and utility suites

    Posted by kumar on 10th June 2008

    We all have been going into surprises by everyday development of new computer/internet worms, virus,spyware etc. and equally amazed with development of products to counter them.More often than not, we find ourselves in a situation where we cant find out, which product we should go for.on this page you will find important tips, Comparative Reviews, Recommended Products and links to many more Security and Utility suite Vendors and Reviews.

    Important Tips

    • Just One, Not Two — Never use two firewall or two anti-virus products (or two suites that include them) at the same time. Completely uninstall one before installing another. Use the vendor’s uninstall utility or if not available, use the Windows XP add/remove software tool in the control panel.
    • Patches & Updates — Most security software is only as effective as its most recent update because it is inherently reactive treating “known” threats. So when you install a security suite, go to the vendor’s web site and update the program immediately and then turn on the auto update feature (if it has one).
    • Firewall TestingAfter you install a firewall, be sure to check it with an online service like Security Space to make sure that it is configured correctly. Testing your firewall is the only sure way to tell that your computer is really being protected.
    • Get Online Protection Too — Consider using an Internet service provider or email service that includes server side anti-virus and spam email filtering as a second layer of defense.
    • Prices — See our custom Internet Security Suites Price List powered by Amazon.com

    Choices (alpha order) — Vendor and review links follow.

    • Top Security SuitesNorton (by Symantec), ZoneAlarm (by Checkpoint) & Kaspersky
    • More Security SuitesAluria, AVG, BidDefender, Blink, Bullguard, Computer Associates, F-Secure, Grisoft, eEye, Iolo, Laplink, McAfee, Microsoft, MicroWorld, Norman, Panda, Preventon, Steganos, Trend Micro, VCOM & Webroot
    • Utility SuitesIolo System Mechanic Pro, Symantec’s Norton Systemworks, VCOM SystemSuite & WinCleaner Complete PC Care

    Comparative Reviews

    Top Security Suites

    Norton Internet Security 2008 or Norton 360 from Symantec include personal firewall and protection from viruses, worms, spyware, intrusion, phishing and root kits. Also includes behavioral monitoring features. The free online add-on pack includes anti-spam, parental control, confidential information blocking, and ad blocking. “Norton 360″ adds automatic backup and restore with 2 GB of online storage, PC tune up and embedded support components.

    ZoneAlarm Internet Security Suite from CheckPoint (they bought Zone Labs) features include network, program & operating system firewalls, antivirus, anti-spyware, anti-spam, anti-phishing, identity theft protection, auto-learn, game mode, wireless PC protection & SmartDefense service; Windows 2000/XP users also get spy site blocking, privacy protection, IM protection, email security, & parental control. CNet Editor’s Choice January 2007.

    Kaspersky Internet Security 7.0  features intrusion protection, anti-virus, personal firewall, anti-spyware, anti-spam, and blocks auto dialers, ads and pop-ups.

    More Security Suites (in alpha order)

    Agnitum Outpost Pro Security Suitefirewall, anti-virus/spyware, anti-spam, proactive monitor.

    Aluria Security Center — Firewall, anti-virus, anti-spyware, and anti-spam. Also available as the Earthlink Protection Control Center which is free if Earthlink is your ISP or $5 per month or $48 per year if it is not your ISP.

    AVG Internet SecurityFirewall, antivirus, anti-spyware and anti-spam.

    Avira AntiVir Premium Security Suite

    BitDefender Total Security 2008 — Anti-virus, anti-spyware, firewall, parental control, spam filter

    Bullguard Internet Security Suite — Antivirus, firewall and storage

    Computer Associates eTrust Internet Security Suite

    ESET Smart Security 3 includes firewall, anti-malware & anti-spam.

    eEye Digital Security Blink Personal Edition freeware includes firewall, anti-malware, zero-day protection, intrusion prevention, patch tracker…

    F-Secure Internet Security 2008 – Anti-virus, firewall, anti-spam, anti-spyware & parental controls

    Iolo System Mechanic Pro includes Panda anti-virus and firewall, SpyHunter anti-spyware, a popup stopper and tools for optimization, PC fix up, system cleanup and maintenance as well as search and recover files, system shield (secure delete), and drive scrubber (wipe entire disk).

    Laplink PCdefense includes real-time protection against spyware and keyloggers, on-demand scanning for malware, disaster recovery, and repair of various system settings.

    McAfee Internet Security – Personal firewall, anti-virus, surf & chat room for kids, ad blocking, and private information safeguard.

    Microsoft Windows Live OneCareFirewall, anti-virus…

     

    MicroWorld eScan Internet Security Suite is $59 US for 1 PC for 1 year, antivirus, anti-spyware, anti-adware, parental control, anti-spam, pop up blocker, privacy clean up.Norman Security Suite — Firewall, antivirus, parental controls…

     

    Panda Platinum Internet Security — Antivirus, firewall, blocks spam, privacy protection, web content filtering, anti-spyware, PC security diagnosis and repair, and automatic updates.

    PCLive — Freeware version includes antivirus, antispyware, popup blocker & personal firewall; $5 per month fee will add [when available] diskeeper, parental controls, & 24/7 technical support.

    PC Tools Internet Security 2008Includes anti-spyware, antivirus, firewall and spam protection.

    Preventon Secure Internet DesktopThe standard version includes firewall, antivirus and parental contro. The Pro version adds anti-spyware and anti-dialer.

    Steganos Internet Security 2006 — Personal firewall & anti-virus (from Kaspersky Labs), anti-spyware (from Webroot), anti-spam, anti-dialer and more.

    Trend Micro Internet Security — Personal firewall, antivirus, spyware protection, fraud defense, wireless network monitoring, home network control, vulnerability assessment, parental controls and Trend Secure services.

    VCOM SystemSuite (formerly OnTrack) with AutoUpdate, Fix-It Utilities, NetDefense (Sygate Firewall), VirusScanner Pro (Trend Micro PC-cillin), CrashProof, EasyUninstall, Crisis Center, DataEraser Personal Edition & PowerDesk Pro.

    Webroot AntiVirus with AntiSpyware & Firewall

    Utility Suites

    Comparative Reviews

    • Suite Deals, Smart Computing, March 2007 — System Suite 7 Professional, WinCleaner Complete PC Care 10, System Mechanic 7 Professional, and Norton SystemWorks Premiere
    • The Trouble-Free PC, Lincoln Spector, PC World, January 5, 2004

    Iolo System Mechanic Pro is a security and utility suite; see description and reviews in the security suite section above.

    Norton SystemWorks, Symantec, with LiveUpdate, AntiVirus, Utilities, CleanSweep, GoBack & Web Cleanup.

    • Norton Systemworks 2005 Premier review, Barry Brenesal, CNet, May 4, 2005

    VCOM System Suite (formerly OnTrack) is a security and utility suite; see description and reviews in the security suite section above.

    WinCleaner Complete PC Care by Business Logic is a security and utility suite

    • Computer Power User review, Serdar Yegulalp, January 2006
    • Vnunet review, Paul Monckton, Personal Computer World, August 2005

    Utility Software Resource Sites — Freeware, Shareware & Free-Trial

     
     
     
     

     

     

    Posted in Computers & internet | 1 Comment »