HCI (Human Computer Interfaces) - العلم نور


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الجمعة، 24 مايو 2019

HCI (Human Computer Interfaces)

HCI (Human Computer Interfaces)

         By hearing this name, we can easily say that HCI are the techniques that facilitate the interaction between users and computers. Researchers in this field try to observe new ways of interaction with computers and design technologies that make these ways possible to be applied in HCI. Human computer interfaces can be defined as the science which concerns with the communication of human and machine by designing, evaluating and implementing systems for human use. Both machine and human sides are required for supporting these systems for the mixing of computer & programming techniques and human factors.

Interests of HCI Researchers
-        The optimization of designs for adding new properties such as efficiency and that will be achieved by designing new HCI systems.
-        Using software libraries for the implementation of Human-Computer interfaces.
-        The evaluation of Human computer interfaces with respect to the usability of them.
-        Improving methods for recognizing the identity of the user to know whether it is a human or computer.

HCI Design Principles
·       The focus on tasks and users: That will be done by defining the performance of the task and the users needed to perform this task.
·       Empirical Measurement: By the early testing of the interface with real users and making sure that the performance level of users may lead to varying the results.
·       Iterative Design: This will be done as follow:
ü Designing the user interface.
ü Testing.
ü Analyzing the results.
ü Repeat the steps.

Aspects of Interaction Loop in HCI
-        Visual Based: researchers focus on this area of HCI in their research so it's considered as the most widespread area in HCI.
-        Audio Based: It's considered as the area of information which provided by audio signals. It's also an important area of HCI systems.
-        Task Environment: It's considered as the conditions and goals of the task.
-        Machine Environment: It's considered as the environment in which the computer exists.
-        Interface Areas: they involve the processes of the human and computer.
-        Input Flow: The information flow which begins in the environment of the task upon the use of computer by the user.
-        Output: The information flow which originates in the environment of the machine.
-        Feedback: The evaluation and confirmation of the processes by the interface loops when they pass from the computer to the human through the interface and vice versa.
-        Fit: The optimization of the human resources in order to complete the task depending on the user, the computer and the task itself.

HCI Characteristics
-        High-functionality systems. There is no limit for the number of functions associated with the systems.
-        Mixed Media. Formatted data, voice, images…etc. can be handled by the systems which allow the users to exchange communication links.
-        High-bandwidth Interaction. The changes of devices, graphics, media and speed may increase the rate of interaction between human and computer.
-        Information utilities. The improvement of interfaces quality will be expected to increase the rate of proliferation of information utilities and industry services.

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