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  • Information Visualisation Explained
    to transform raw data into a comprehensible graphical format allowing the user to make decisions based on that data Perhaps the best example to describe the way in which visualisations can allow us to better understand data is in Mendeleev s 1869 Periodic Table of Elements Mendeleev developed a method by which the known chemical elements could be presented in a grid like formation arranged according to their individual attributes Whether he intended it or not Mendeleev s graphical representation of the elements highlighted gaps in our knowledge allowing scientists to predict where undiscovered elements should fit By transforming the abstract non spatial data of chemical elements into a visual representation Mendeleev created a way for us to better comprehend the data This scientific visualisation graphical visualisation of data from the physical world eventually led to the field of information visualisation which deals with the translation of non spatial data into comprehensible graphical formats Business Applications As mentioned above the ability to understand and communicate abstract data is essential for the success of an enterprise However information visualisation is much more than just a method of translating abstract data into a more interesting or visually attractive format Instead a founding tenet of information visualisation and the measure of the success of any particular visualisation is that a visualisation should reduce the time required to take in data make sense of it and draw conclusions from it One of the most difficult tasks in developing a visualisation is in finding a method of presenting data that can achieve these goals Decision makers require business intelligence to make the right decisions in the shortest possible time Clearly then the ability to communicate dense data in a graphical representation can be of enormous use to decision makers In order to create such representations

    Original URL path: http://www.bestpricecomputers.co.uk/glossary/information-visualisation.htm (2016-02-08)
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  • Infrastructure As a Service Explained
    best and constantly shifting There is considerable overlap in particular between IaaS and PaaS and a service might find itself described as either of these depending on whether the description comes from a developer system admin or a manager Description of IaaS With IaaS the enterprise renting the service is likely to have considerable IT skills in house because the infrastructure offered is quite plain Customers select and basic software servers for their part of the cloud and then load up their libraries applications and data then configure them themselves Virtualisation enables IaaS providers to offer almost unlimited instances of servers to customers and make cost effective use of the hosting hardware Organisations can use IaaS to quickly build new versions of applications or environments without having to order new hardware then wait for it to arrive and be configured Another popular use of IaaS is hosting the websites of organisations This keeps the website and its drain on IT resources away from an internal infrastructure whose primary purpose is to run the business not the website In these instances the IaaS provider takes on any worries about monitoring traffic and keeping the website available Cost Comparisons for IaaS Providers Like most cloud computing service offerings IaaS is priced on a pay as you go model with organisations paying for the services provided from a menu There is usually a price for the number of instances of servers either Windows or Unix and the software environments loaded onto them such as databases or web severs application development environments or others Then charges are made for the amounts of data hosted and network traffic in and out of the servers The pricing models vary from provider to provider which makes it difficult for organisations considering a move to IaaS to compare providers against each other The varying usage rates of different computing environments also conspire against organisations trying to compare prices An organisation looking to outsource a high volume website might find that one provider is cheaper but that same provider may be more expensive for a company outsourcing its development environment which would require higher computing power but much lower data transfer rates Comparisons also need to be made between the whole cost of owning servers and storage rather than renting them from an IaaS provider A Real Life IaaS Provider Example Amazon Web Services AWS is the most successful IaaS provider to date Amazon has huge server farms that support the Amazon website and plenty of experience with running a reliable multiple server operation It was decided to take the skills technologies and hardware they had developed or acquired and offer them for hire to other organisations Amazon s Elastic Compute Cloud EC2 offers as the name suggests server power that can grow and contract in line with an organisation s demands Users of the service pay at the time of going to press ten cents USD per hour for the most basic server and the menu goes up

    Original URL path: http://www.bestpricecomputers.co.uk/glossary/infrastructure-as-a-service.htm (2016-02-08)
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  • Intranet Strategies Explained
    provide these desktop computers with access to the Internet This improvement in IT infrastructure has led enterprises to develop their own internal intranets allowing employees access to secure information both on site and remotely However it is all too often the case that enterprises do not follow any strategy in the implementation of their intranet and thus fail to exploit its full capabilities Why have a strategy Defining what the organisation hopes to achieve from the intranet allows for proper estimation of costs and budgets Involving other departments in the planning makes for a more effective implementation and one in which the rest of the workforce has bought into Proper planning of the implementation will allow for phasing out of existing systems to avoid duplication Company growth needs to be factored in to avoid lack of scalability hampering expansion Defining control Without a strategy and control the quality of content on the intranet cannot be maintained Intranet implementation needs to meet legislative conditions including on accessibility and this needs to be planned for legal issues pdf Without an information audit and proper architecture design it s almost impossible to make informed choices on variables like the content management software to be used Without a strategy in place it s impossible to measure whether the intranet is living up to the organisation s expectations The strategy itself The component parts of an effective strategy address the C ontent T echnology and G overnance Included in there are decisions to be made on standards ownership which department owns the intranet security e g data protection and promoting the use of the intranet within the organisation What the intranet does a background Knowledge Management Organisations can benefit greatly by providing all of their employees access to a wide range of information even if the information is only of regular use to a small portion of the workforce By using an enterprise Intranet as an information portal employees can gain access to useful information of which they may have previously been unaware Access to such information can increase productivity improve decision making and reduce the need to reproduce information each time it is required Such information can include but is not limited to statistical data vendor information and policy documents Essentially using the Intranet as a knowledge management portal enables an enterprise to create an easily accessible repository of all the knowledge held within the enterprise Collaboration and Communication In large organisations and especially in decentralised organisations such as multi nationals an Intranet can be extremely useful as a way of allowing departments and employees to collaborate effectively and communicate important business information efficiently Ideally an enterprise Intranet will supply a database of contact details for all members of the enterprise allowing instant communications to be sent between departments and employees regardless of physical proximity By enabling fast and efficient inter office communication an Intranet should assist in increasing efficiency and allow the knowledge held within an organisation to be shared for the benefit

    Original URL path: http://www.bestpricecomputers.co.uk/glossary/intranet-strategies.htm (2016-02-08)
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  • IP Convergence Explained
    The benefits of IP Convergence 1 Excellent support for multimedia applications Improved connectivity means that devices can be assigned specific tasks the number of devices required is less which makes installation deployment and learning an easier task 2 A converged IP network is a single platform on which interoperable devices can be run in innovative ways Since IP is an open standard it is vendor independent and this helps in fostering interoperability and improving network efficiency in terms of time and cost The ambit of IP convergence encompasses networks devices and different technologies and systems that can be operated on a unified infrastructure 3 A converged IP network is easier to manage because of the uniform setup in which the system resources operate Training users is easy 4 An enterprise can achieve flexibility in terms of moulding its communication patterns to its management practices This is a dynamic process that can be continually improved with collaboration from network partners What this results in is the right information to the right person at the right time leading to improved decision making 5 IP networks have proven to be remarkably scalable and this has been one of the prime reasons that even large enterprises have gone ahead with implementing IP Applications that run on IP networks are available all over the world in fact most new business applications include inbuilt IP support 6 An IP convergent network is capable of making use of the developments in class of service differentiation and QoS based routing This leads to better utilization of resources and also allows for capacity redundancy to take care of an increase in the number of users 7 A uniform environment requires fewer components in the network Smoother maintenance and management result from this and in turn lead to improved processes Affordable deployment results from the elimination of multiple networks operating in parallel and manageability improves In a converged environment fewer platforms need to be tested and gateways between networks are eliminated 8 Business applications have different tolerance levels for transit delays dropped packets and error rates IP architecture is capable of handling these so that the QoS reflects the requirements of the different applications 9 Device integration has the potential to simplify end to end security management and at the same time make it more robust Continuous development is taking place in field of security for IP data communication 10 A converged IP network offers a business tremendous cost savings in terms of hardware and space utilization It opens up more markets that can be reached more products that can be introduced increases employee productivity and mobility and enables even smaller companies to compete with larger ones because of faster information relay Implementation The first and most apparent result of integrating discrete network elements is that with a reduction in the number of nodes in a network the operating and maintenance costs go down Connectivity and wiring costs whether to the user s work station or to the provider s

    Original URL path: http://www.bestpricecomputers.co.uk/glossary/ip-convergence.htm (2016-02-08)
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  • iSCSI Explained
    and is an IP based standard used for linking data storage devices over a network and enabling the transfer of data by carrying SCSI commands over IP networks iSCSI is a TCP IP based protocol which enables the transport protocol for SCSI which is operational on top of the TCP It offers a mechanism for capturing SCSI commands on an IP network It is a protocol for data storage systems that natively use TCP IP Packet delivery with SCSI is different from that with IP Packet delivery in IP is not in a fixed order Since iSCSI makes use of the ubiquitous Ethernet it offers enormous potential for low cost centralization of storage With SCSI as a channel interface the packets are delivered in a sequence and a break in sequence can lead to data loss Also iSCSI requires a bulkier packet head that contains additional information for speeding up packet assembly The delay latency that occurs in data transfer over the Ethernet is one of the main reasons holding back the commercial advance of iSCSI That said techniques like the TCP Offload Engine TOE are proving useful in reducing overheads associated with the TCP IP protocol High Ethernet speeds are encouraging organizations to deploy gigabit and 10 gigabit networks The attraction of iSCSI lies in the advantages it offers These include consolidation of data storage systems backup of data efficient server clusters ease of replication and recovery IP storage enables the realization of capabilities such as QoS improved safety and SAN geographic distribution Storage area systems with native iSCSI offer advantages in terms of providing a single technology that connects storage systems servers and clients existing in a LAN WAN SAN Storage systems need not be in geographic proximity to the applications With an iSCSI interface it is possible to transfer data to the storage devices using not only data carriers and communicators but also network cards on the client side However the use of network cards can consume significant amounts of processor power on the client s side iSCSI is a great way to access disk drives over a LAN It eliminates the need to buy deploy install learn manage and upgrade a new networking infrastructure Since disk drives themselves do not have Ethernet connectivity intelligent controllers are used to act as iSCSI target devices so that the SCSI packets transferred through the GiGE cables are converted into a language compatible with the disk drive The controllers also cache I Os in the memory so that latencies inherent in the drive are masked Major components of iSCSI include iSCSI Address and Naming Conventions iSCSI Session Management iSCSI Error Handling iSCSI Security SCSI devices available in a network are identified through iSCSI nodes that are named according to the rules adopted for naming internet nodes An iSCSI name enables quick identification of an iSCSI device regardless of its physical location Session management with iSCSI consists of two phases a login phase and a full feature phase The Fiber Channel

    Original URL path: http://www.bestpricecomputers.co.uk/glossary/iscsi-protocol.htm (2016-02-08)
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  • ISO 27002 Explained
    12 1 4 information security policy document 3 1 1 allocation of information security responsibilities 4 1 3 ISO 27002 FAQ Sound information security is the cornerstone of sensible corporate governance The emergence of an international standard to support this was perhaps inevitable However it took until the second half of the 1990 s for this process to really take shape ISO 17799 is often used as a generic term to describe what are actually two different documents ISO17799 aka ISO 27002 which is a set of security controls a code of practice and ISO 27001 formerly BS7799 2 which is a standard specification for an Information Security Management System an ISMS More ISO 17799 ISO IEC 27002 Definition The ISO IEC 27000 series including the 27002 is an information security standard for the management of Information Security and is part of the ISO IEC Standards published by the International Organization for Standardization ISO and the International Electrotechnical Commission IEC The ISO IEC 27000 comprises broad recommendations for the best practices in managing information security It includes ISO 27002 standards for the control and improvement of the Security Management System ISO 27005 to assist implementing of IT security based on risk management approach and ISO 27006 a guide to the certification and registration process They are also called the IEC27002 IEC27005 and the IEC27006 ISO IEC 27002 The ISO27002 Standard contains 12 main sections 1 Risk assessment 2 Security policy management direction 3 Organization governance of information security 4 Asset management 5 Human resources security 6 Physical and environmental security 7 Communications and operations management 8 Access control 9 Information systems acquisition development and maintenance 10 Information security incident management 11 Business continuity management 12 Compliance This site provides a useful guide to achieving the certification History It was originally

    Original URL path: http://www.bestpricecomputers.co.uk/glossary/iso-27002-standard.htm (2016-02-08)
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  • What is ITIL?
    and IT directors managers service providers How can your organisation benefit from meeting these standards The guidance from IRIL can reduce costs improve productivity increase customer satisfaction and serve to demonstrate an organisation s commitment to following best practises More detailed definition Available qualifications Foundation Certificate Practitioner s Certificate Manager s Certificate As the name suggests these are acquired at increasing levels of the organisation structure The first provides a

    Original URL path: http://www.bestpricecomputers.co.uk/reviews/advice/ITIL.htm (2016-02-08)
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  • Learning Management Systems Explained
    training that they need to perform a particular function they must also be able to provide records to show regulated bodies that staff have received that training Management of Training Facilities and Assets Many LMS suites also provide tools to manage the delivery of training This can include managing bookings of rooms or other learning facilities assignment of lecturers or trainers to their classes and even the financial details who has paid for their course and who hasn t By hooking an LMS into a communication platform the system can also be used to send out details of training events to the participants and facilitators by email SMS or other communication methods LMS Versus LCMS Some LMS products also manage the educational content as long as it is in a form that can be stored digitally such as CBT video or audio There is some overlap here with specialised learning content management systems LCMS which exist purely to mange the content With an LCMS educational content can be created or uploaded to a central system tagged and formatted in such as way as to be later used when building the curriculum for a course Within the LCMS existing items of content usually known as assets can be brought together to create a new course In as LMS this is less likely to be the case A pure LMS can direct a student to the material and deliver it if it is online content but cannot build a new training course using that content What Can an LMS Deliver for a Business The needs of an educational establishment managing perhaps tens of thousands of students past and present taking mostly lessons and lectures will be very different to say the needs of a 1500 strong company with teams in regional offices

    Original URL path: http://www.bestpricecomputers.co.uk/glossary/learning-management-systems.htm (2016-02-08)
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