Showing posts with label ICT. Show all posts
Showing posts with label ICT. Show all posts

Wednesday, March 28, 2012

Agricultural Knowledge and Information Systems (AKIS)


The concept of AKIS was coined by Röling (1986). According to FAO and the World Bank (2000), "an Agricultural Knowledge and Information System links people and institutions to promote mutual learning and generate, share and utilize agriculture-related technology, knowledge and information. The system integrates farmers, agricultural educators, researchers and extensionists to harness knowledge and information from various sources for better farming and improved livelihoods."

 The AKIS/RD vision document is intended as a vehicle for sharing ideas and principles with the various stakeholders addressing the causes, and for seeking solutions for rural poverty. Operational guidelines, inspired by this shared vision and consistent with the principles outlined here, are under preparation by the World Bank and FAO.

The AKIS respond to technology, knowledge and information needs of farmers helping them in decision making and management of their farms. The basic assumption of this system is that information relevant for decision-making is generated by different actors and reaches farmers in many different ways. Quite often analysis of the AKIS shows that a role other than TOT is more appropriate. AKIS could involve providing farmers with a basket of opportunities and helping them to choose the right opportunity for their situation. Several analytical models have been developed to examine and assess AKIS.

It has been experienced by all concerned with the agricultural development process that a significant gap exists between technology generation and technology use at the field level. The dual concept of AKIS and synergy can fill this analytical gap. Within AKIS, farmers are in the central position. Farmers’ knowledge and skills are certainly an important complement to formal research and extension and such complementarities can be achieved through the institutional mechanism of AKIS. Farmers’ organizations also can play a valuable role in the process by formulating the information needs of their members and stimulating research institutes, extension services and other actors to provide this information. So, the articulated approach of AKIS is felt necessary to improve and sustain Indian Agriculture as well as to develop more effective relations with the world outside the farm, especially the markets.

An essential element in the AKIS concept is that it views agricultural research and extension as necessary but, by themselves, insufficient elements in complex innovation oriented institutional arrangements. The concept clarifies the distinction between agricultural research and extension, and innovation and technological change.

As Anderson (1997) has pointed out, it is not correct to attribute all the effects of technological change to agricultural research and extension. The focus in not on research or on extension per se, but on innovation and on the institutional arrangements that can favor it.

This is a sharp departure from the conventional view of innovation as a linear and rather mechanistic process that starts in highly skilled and specialized organizations (usually in the North) conducting basic and strategic research, and then moving down the line to applied research, adaptive research, technology transfer, extension and, finally, farmers as passive adopters of knowledge and information generated elsewhere.

As Röling and Jiggins (1998:304) have has recently put: 'It has become common practice to speak about 'agricultural knowledge systems', i.e., to use a (soft) systems approach for looking at the interaction among the (institutional) actors operating in a 'theatre of agricultural innovation'. Innovation emerges from this interaction and is no longer seen, as was customary in the 'transfer of technology perspective', as the end-of-pipe product of a sequential process. The knowledge system perspective looks at the institutional actors, within the arbitrary boundary of what can be considered the theatre of innovation, as potentially forming a soft system. A soft system is a social construct in the sense that it does not exist. One cannot, therefore, say that such actors as research, extension and farmers are a system. In all likelihood they are not, in that there is no synergy among their potentially complementary contributions to innovative performance, but by looking at them as potentially forming a soft system, one begins to explore the possibilities of facilitating their collaboration and hence the possibilities for enhancing their synergy and innovative performance'.

The World Bank - perhaps the largest agency in terms of supporting agricultural research, extension and development projects - in the 16 year period up to 1992, committed $ 3 billion to research and $ 2 billion to extension (Purcell and Anderson, 1997). By 2000, the World Bank had committed $ 5 billion each to agricultural research and extension projects1. Pardey and Alston (1995) report that in 1990 developing countries invested PPP $ 8.8 billion in agricultural research (much of it probably financed by multilateral loans such as those of the World Bank). With this kind of resources, an optimist gross estimation is that in that period agricultural research and development projects must have involved less than 10 million direct beneficiaries. 

INTERNET


The Internet is a giant worldwide network that connects the Computer systems located throughout the world that are willing to share their resources. The Internet is Network of Networks. Internet is a worldwide network of computer networks. It is an open inter connection of networks that enables connected computers to communicate with each other. These networks are scattered over the globe, yet are inter connected making it possible to communicate with each other in a few seconds. Internet is not owned by any individual organization or the country; it is a free for all open service facility. It is governed by INTERNIC (Internet Network Information Centre).

The Internet is As per the ITU (International Telecommunications Union, www.itu.int website information, there were 1.13 billion subscribers to Internet in December 2006. India had 6.93 million subscribers and 60 million users of Internet. The Internet penetration figures (% of population using internet) for selected countries are given in figure 2.1. The services and information that Internet provides are increasing at a very fast pace a Server system.

Sl. No.        Country     Internet Penetration
1.                U.S.A.                  69.10
2.                Canada      67.89
3.                Germany    46.67
4.                India                   5.44
5.                World        17.36
* Source : www.itu.int

Some of the best-known services available on the Internet include following:
•         World Wide Web (www)
•         File Transfer Protocol (FTP) service
•         Electronic mail
•         Discussion groups and News Groups
•         Telnet service
·        HTML (Hyper Text Mark Up Language)
·        HTTP  (Hyper Text Transfer Protocol)

Advantages:

Communication: The foremost target of internet has always been the communication. And internet has excelled beyond the expectations .Still; innovations are going on to make it faster, more reliable. By the advent of computer’s Internet, our earth has reduced and has attained the form of a global village.

Information: Information is probably the biggest advantage internet is offering. The Internet is a virtual treasure trove of information. Any kind of information on any topic under the sun is available on the Internet. The search engines like Google, yahoo is at your service on the Internet.

Entertainment: Entertainment is another popular raison d'être why many people prefer to surf the Internet. In fact, media of internet has become quite successful in trapping multifaceted entertainment factor.

Services: Many services are now provided on the internet such as online banking, job seeking, purchasing tickets for your favorite movies, guidance services on array of topics engulfing the every aspect of life, and hotel reservations.

E-Commerce: Ecommerce is the concept used for any type of commercial maneuvering, or business deals that involves the transfer of information across the globe via Internet.

Disadvantages

Theft of Personal information: If you use the Internet, you may be facing grave danger as your personal information such as name, address, credit card number etc. can be accessed by other culprits to make your problems worse.

Spamming: Spamming refers to sending unwanted e-mails in bulk, which provide no purpose and needlessly obstruct the entire system.

Virus threat: Virus is nothing but a program which disrupts the normal functioning of your computer systems. Computers attached to internet are more prone to virus attacks and they can end up into crashing your whole hard disk, causing you considerable headache.

Pornography: This is perhaps the biggest threat related to your children’s healthy mental life. A very serious issue concerning the Internet. There are thousands of pornographic sites on the Internet that can be easily found and can be a detrimental factor to letting children use the Internet.

TYPES OF NETWORK:


A network consists of two or more computers that are linked in order to share resources (such as printers and CD-ROMs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams.

A computer network, often simply referred to as a network, is a collection of computers and devices interconnected by communications channels that facilitate communications and allows sharing of resources and information among interconnected devices. Computer networking or Data communications (Datacom) is the engineering discipline concerned with the computer networks..

A group of computers and other devices connected together is called Network, and the concept of connected computers sharing resources is called Netwoking.

Types of Networks
In general, all networks have certain components, functions and features in common. These include servers, clients, media, shared data, shared printers, resources etc. And, the type of network depends on numerous factors like;
•         Size of the organization
•         Level of security required
•         Type of business
•         Level of administrative support available
•         Needs of the network users
•         Network budget

Depending on above factors, networks can be divided into two broad categories 1) peer-to peer and 2) Server-based networks.

Peer-to-Peer Networks
In a peer-to-peer network, there are no dedicated servers or hierarchy among the computers .All the computers are equal and, therefore, are known as peers. Normally, each computer functions as both a client and a server, and there is no one assigned to be an administrator responsibility for the entire network. The user at each computer determines what data on their computer gets shared on the network. Peer-to-peer networking is built into the operation system such as Microsoft Windows 95, 98, and XP. No additional software is required to setup a peer-to-peer network.

Peer-to-peer network is appropriate where
•         There are fewer than 10 users
•         The users are all located in the same general area
•         Security is not an issue
•         The organization and the network will have limited growth within the foreseeable future.

Server-based Network
In an environment with more than 10 users, a peer-to-peer network with computers acting as both servers and clients may not be adequate. Therefore, most networks have dedicated servers. A dedicated server is one that only functions as a server and is not used as a client or workstation. Servers are dedicated because they are optimized to quickly service requests from network clients and ensure the security of files and directories. Server-based networks have become the standard model for networking.

The variety of tasks that servers perform is varied and complex. Servers for large networks have become specialized to accommodate the expanding needs of users. 

The different types of servers include;
Ø File and print servers
Ø Application servers
Ø Mail servers
Ø Fax servers
Ø Communication servers
Ø Web servers etc.

A server-based model has following advantages
Ø Sharing resources: Server-based sharing of data can be centrally administered and controlled.
Ø Security: Security is most often the primary reason for choosing a server-based approach to networking. In a server-based environment security can be managed by one administrator who sets the policy and applies it to every user on the network.
Ø Backup: It is easier to make sure that the data is backed up on a regular schedule, at one place.
Ø Centralized administration of resources.
Ø Avoiding redundancy of data
Ø Network resources can be maintained very easily.

The three types of networks are: the Internet, the intranet, and the extranet. Examples of different network methods are:
  • Local area network (LAN), which is usually a small network constrained to a small geographic area. An example of a LAN would be a computer network within a building.
  • Metropolitan area network (MAN), which is used for medium size area. examples for a city or a state.
  • Wide area network (WAN) that is usually a larger network that covers a large geographic area.
  • Wireless LANs and WANs (WLAN & WWAN) are the wireless equivalent of the LAN and WAN.
  • SAN - Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area Network
  • CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network
  • PAN - Personal Area Network
  • DAN - Desk Area Network
PERSONAL AREA NETWORK (PAN)
A Personal Area Network (PAN) is a computer network used for communication among computer and different information technological devices close to one person. Some examples of devices that are used in a PAN are personal computers, printers, fax machines, telephones, PDAs, scanners, and even video game consoles. A PAN may include wired and wireless devices. The reach of a PAN typically extends to 10 meters. A wired PAN is usually constructed with USB and Firewire connections while technologies such as Bluetooth and infrared communication typically form a wireless PAN.

Local Area Network (LAN)
A network is said to be Local Area Network (LAN) if it is confined relatively to a small area. It is generally limited to a building or a geographical area, expanding not more than a mile apart to other computers. However, one LAN can be connected to other LANs over any distance via telephone lines and radio waves.

A system of LANs connected in this way is called a wide-area network (WAN). Each node (individual computer ) in a LAN has its own CPU with which it executes programs, but it also is able to access data and devices anywhere on the LAN. This means that many users can share expensive devices, such as laser printers, as well as data. Users can also use the LAN to communicate with each other, by sending      e-mail or engaging in chat sessions.
  
LAN configurations consist of:

·         A file server - stores all of the software that controls the network, as well as the software that can be shared by the computers attached to the network.

·         A workstation - computers connected to the file server (Mac or PCs). These are less powerful than the file server

·         Cables  - used to connect the network interface cards in each computer.

LANs are capable of transmitting data at very fast rates, much faster than data can be transmitted over a telephone line; but the distances are limited, and there is also a limit on the number of computers that can be attached to a single LAN.

Advantages of Local Area Network (LAN);
Ø File sharing: A LAN enables many users to share a single copy of a file stored on a central file server. This helps the organization in keeping its records, documents and other files consistent.

Ø Transfer Files: A LAN enables to copy files from one machine to another without having to exchange floppy diskettes.

Ø Sharing of computer hardware: using LAN, share one or more hardware such as printer, modem, fax machine among several computers.

Ø Sharing of computer software: A LAN enables people to use the same copy of software. The LAN administrator can install software updates.

Ø Communication: LAN can be used to send letters, reports, messages to other people in other parts of the building and it provides a paperless office.

METROPOLITAN AREA NETWORK ( MAN):
MAN are large computer networks usually spanning a city. They typically use wireless infrastructure or Optical fiber connections to link their sites .A MAN is optimized for a larger geographical area than a LAN, ranging from several blocks of buildings to entire cities. MANs can also depend on communications channels of moderate-to-high data rates. A MAN might be owned and operated by a single organization, but it usually will be used by many individuals and organizations. MANs might also be owned and operated as public utilities. They will often provide means for internetworking of local networks. Metropolitan area networks can span up to 50km, devices used are modem and wire/cable.

WILD AREA NETWORK (WAN):
A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs). Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites. The largest WAN in existence is the Internet.

A network device called a router connects LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address.

A WAN differs from a LAN in several important ways. Most WANs (like the Internet) are not owned by any one organization but rather exist under collective or distributed ownership and management. WANs tend to use technology like ATM, Frame Relay and X.25 for connectivity over the longer distances.

Ø  Speed. Sharing and transferring files within Networks are very rapid. Thus saving time, while maintaining the integrity of the file.
Ø  Cost. Individually licensed copies of many popular software programs can be costly. Networkable versions are available at considerable savings.
Ø  Security. Sensitive files and programs on a network are passwords protected, so that you do not have to worry about illegal copying of programs.
Ø  Centralized Software Management.  Software can be loaded on one computer (the file server) eliminating that need to spend time and energy installing updates and tracking files on independent computers throughout the building. 
Ø  Resource Sharing. Resources such as, printers, fax machines and modems can be shared. 
Ø  Electronic Mail. E-mail aids in personal and professional communication. Electronic mail on a LAN can enable staff to communicate within the building having tot to leave their desk. 
Ø  Flexible Access. Access their files from computers throughout the firm. 
Ø  Workgroup Computing. Workgroup software (such as Microsoft BackOffice) allows many users to work on a document or project concurrently.

Ø  Server faults stop applications being available
Ø  Network faults can cause loss of data.
Ø  Network fault could lead to loss of resources
Ø  User work dependent upon network
Ø  System open to hackers
Ø  Decisions tend to become centralised
Ø  Could become inefficient
Ø  Could degrade in performance
Ø  Resources could be located too far from users