User Interface Design of E Learning System for

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IJACSA International Journal of Advanced Computer Science and Applications. Vol 6 No 11 2015, Usability of an application depends more on its ease of use machine interface where high quality multimedia capabilities. for the target population than its features There are evidences are not available. that many high quality applications were abandoned because. the target users could not use them properly Considering the Some other researchers used speech recognition techniques. target population the print illiterate people it is important that to solve the problem of illiteracy 19 23 In these applications. the user interface is suitable enough for them Besides the the researchers used short word based commands to activate. authors assume that the application would be available in the tasks In India China Bangladesh and some African countries. remote areas and be operated by the users themselves without local dialects varies from district to district within the same. any help from others Therefore the focus was on developing a state It would be very difficult to train the speech recognition. user interface that an illiterate person can operate system to work for a considerably large segment of people. independently However the systems work satisfactorily with very limited. command set used by people from only small number of. The rest of this paper is organized as follows Section 2 villages. contains the related works on developing user interface for the. illiterate people The existing works are categorized based on In the recent days some researchers introduced new. the technologies used The limitations of those user interfaces techniques using the recent improved hardware and software. and usability in specific situations are also mentioned Section features 24 28 Researchers have also tested the effect of. 3 details the prototype developed in this work Section 4 different types of graphics like sketch photo animated cartoon. contains the primary design of the user interface It also and video In different situation the result varies significantly. describes the primary evaluation of the user interface findings The researchers also recommended some guidelines for. and observations Section 5 describes the improvements that developing effective user interface for the illiterate users. the authors proposed on the existing recommendations to make Considering availability of rich hardware features and. the user interface more effective to the illiterate people Section software platforms the authors choose to use the. 6 details the experiment conducted and analysis of data recommendations for developing the user interface of the. Section 7 contains the discussion and section 8 concludes with intended e Learning system for the print illiterate people using. a list of future works text graphics and intelligent use of audio annotation Details of. the design considerations are explained in a separate section. II RELATED WORK, User interface for print illiterate people became a subject of III E LEARNING SYSTEM PROTOTYPE FOR ILLITERATE. interest for the researchers for quite a long time Different PEOPLE. approaches have already been tested to develop a user interface The authors are intending to build an e learning system for. and improve its usability for the print illiterate people All the illiterate people living in the remote areas of developing. these attempts might be categorized as i innovative use of text countries to distribute knowledge and empowering them The. and numbers ii Use of extensive graphics and minimum text knowledge includes farming skills public health sanitation. and iii Use of audio in addition to text and graphics child nutrition maternity care etc Technical and non technical. In the early days of computer application development limitations are considered on construction of this system. command line based user interface was the only means of man The system is organized as shown in Fig 1 The content. machine interaction Soon after the computers had more server works as the central repository of all data In addition to. processing capabilities text based menu was introduced Text the e Learning system and its related database database. based menu was shortly replaced by graphics based menu replication management module and DTN module are also. During this time it was not considered that poor illiterate available in the content server The database replication. people living in the developing countries would use computers management module ensures that all the local server databases. In the early of 21st century when the price of computers came are synchronized properly with the content server periodically. within the range of common people in the developing The internet bandwidth in remote areas of developing countries. countries the governments and the international development is not suitable yet to transfer bulky multimedia data Therefore. agencies took initiatives to develop application for the people the bulk data transfer is arranged from content server to the. living in the rural areas of the developing countries However local server over Delay Tolerant Network DTN 29 DTN is. it was always remain as a challenge to make the rural illiterate a hop to hop store and forward data transfer protocol useful in. and semi literate people using those Ample of evidences were the challenged infrastructure scenario DTN uses vehicles like. found where many potential software applications were Bus Steamer Satellites etc to transfer data physically from. abandoned because the target illiterate and semi literate users one place to another In this work data is transferred from the. could not use those This observation encouraged the content server to the local server over internet and DTN using. researchers to work extensively to develop suitable user the interim facilities DTN relay center and DTN node in bus. interface for the illiterate people The local server contains the e Learning system database. Researches have shown that the illiterate people can replication management module and DTN module The local. remember numbers more easily than words Therefore some servers are installed in village information centers VIC Here. experiments used more numbers to make it easy for the VIC is a shared ICT service access facility owned by a local. illiterate users to use the applications 14 18 However these entrepreneur that offer computers and internet connectivity to. recommendations based on usage of number against text are the villagers to use against money The details of the DTN. more relevant for mobile phone interface and other man. 127 P a g e,www ijacsa thesai org, IJACSA International Journal of Advanced Computer Science and Applications. Vol 6 No 11 2015, module DTN relay center and DTN node in bus is out of the identification information The registration process completes. scope of this paper with verification and approval from the administrator The. The content server contains a database that stores video registered users can upload video content edit delete data or. contents and related data The database replication administer the system based on their granted privilege. management module decides which content to be replicated in b Content uploading The registered users may upload. which local server It is obvious that the central server database a video content after login the system properly During. is a huge one Local servers located in different areas do not uploading the video the content provider provides information. need to contain each and every content For example mango like the category subcategory language country etc of the. fruit is not cultivated everywhere in Bangladesh It is very video The content uploader also need to enter a short. unlikely that a villager living in a village where mango fruit is description of the video and audio of the text description The. not cultivated will search for a video related to mango process is made such to ensure accountability against the. cultivation Therefore while replicating the database contents uploaded contents. are selected for a local server based on socio economic. c Content editing Content providers and the,demographic agricultural environmental and other.
administrators can use this option to edit information related. information related to that area The database replication. management module also ensures that all the local servers are to any specific content A content provider can only edit data. synchronized appropriately periodically of the contents he uploaded. d Content deleting Content providers and, The content server is accessible over internet The users of administrators can use this feature to remove any content from. this system may be either registered or anonymous The the system A content provider can only remove the contents. administrators and the content providers are the registered. he uploaded, users Both the registered and anonymous users can access the. system at any time Anonymous users can only search for and e System configuration The configuration privilege is. play video contents Content providers represent organizations only granted to the administrator Configuration includes. those are interested to produce and share the videos to help the content server configuration data replication criteria setting. remote villagers A content provider can upload videos and fill for different local servers parameter setting for data. up corresponding data at any time over the internet He she can transportation from content server to local server and so on. also edit or delete his her own contents f Content searching This feature can be used by both. The villagers visit village information center VIC to use registered and anonymous users The literate users can search. the system They do not need any registration and can only using a text based user interface and the illiterate users can. search for and play the videos search using a different user interface especially suitable for. illiterate people,g Content playing The user can search the desired. video using the search option Then he she can play the video. to watch using content playing feature, Most of these features are for administrators or content. providers who are literate and possess high IT aptitude. Considering the scope of this paper Content Searching and. Content Playing should be discussed extensively,Use case name Search for Content.
Summary Takes input from the user and search for,matching video contents from the. database and list,Description,1 User specifies to search contents. 2 User specifies the category subcategory language. country and full or part of the title of the contents to be. part of the list User may input all or some of the criteria. mentioned above,3 The system searches for the matching contents. Fig 1 System Arrangement 4 The system lists the matching contents. Fig 2 Content Searching use case,A Features of the system. The system maintains a repository of video contents that B Content Searching. teaches different skills and techniques useful for the target Content searching is the most frequently used feature. population It also contains information about new crops Administrators and the content providers use it to edit or delete. livestock etc The features of the systems are briefly described contents They may also use it to play contents Anonymous. as follows users always use it to find out the desired content before. playing it Fig 2 shows the use case, a User Registration People who are literate can fill up.
a form to become a registered user Then the user input his. 128 P a g e,www ijacsa thesai org, IJACSA International Journal of Advanced Computer Science and Applications. Vol 6 No 11 2015, C Content Playing shows the user interface which is refined from the use case. After the user finds the desired content using the content description of Content Searching use case The details of the. searching feature he she will use content playing feature for user interface is described below. watching It is another frequently used feature Fig 3 contains. the use case related to content playing feature,Use case name Play content. Summary Plays the selected video content,Description. 1 User specifies the video content that he she wants to play. 2 The system starts playing the video content,3 User watches the video content.
4 The system finishes playing the video content moves the. playing position to the beginning of the video content a b. and returns into the pause mode,Fig 3 Content Playing use case. IV PRIMARY DESIGN OF USER INTERFACE, For the purpose of developing the user interface the. authors followed the recommendations made by the previous. researchers for developing user interface of similar applications c d. 24 27 The recommendations are, a Minimizing the need of hierarchical navigation It. requires higher level of aptitude to remember the, combinations that emerge after a few steps The situation gets. worse when the number of branches in each level becomes. higher e f, b Maintaining natural workflow as much as possible It Fig 5 User interface of Content Searching use case Fig a shows the user.
reduces the load of learning new concept interface for literate users b shows the categories an illiterate user can select. c Use of graphics where users need to select an item fruit flower vegetable etc c shows the sub categories an illiterate user can. Vol 6 No 11 2015 126 User Interface Design of E Learning System for Functionally Illiterate People Asifur Rahman the print illiterates suffer

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