CS408 - Human Computer Interaction

Yes, the utilization of speech recognition is extremely useful during a social environment. speech recognition systems had found a broad range of use in computerized games and toys, control of various instruments, data collection, and dictation. The feature also proved to be of much help among those that couldn’t obtain keypads and among those with certain disabilities. utilized in evolving search engines; when using search engines there are often differences between how we type our inquiries and the way we verbalize an equivalent queries. The user may have trouble expressing a phrase or their intent thus might not acquire appropriate results. With the inclusion of speech recognition in search engines, the results of accuracies are going to be significantly increased. As speech recognition improves, there’ll be a big implication on how the general public views search engines generally. Use in commission delivery; customers and clients might not want to talk to a live operator. Therefore, they prefer to use speech recognition systems. This helps to form the method efficient and improves on time because it cuts on waiting time. This has its application in various airports in confirming the travel schedules of the aircraft.

Q. 1 Solution Idea Devices Visibility Consistency Constraints Affordance Keyboard Keyboard design is a good design all the Alphabet and numeric are in different section also the special function key are arranged in top of the keyboard, specially delete button is very good deployed at right top, which cannot be accidentally pressed during any typing. Keyboard has strict constraint i.e if we want to used special character which are on numeric buttons these cannot be activated without pressing the shift button. Or some button on keyboard especially on laptop is only work with pressing “fn” key. Atm machine ATM has good visibility because it have a limited amount of button on his left and right side and only some limited amount of processing screen. ATM has low consistence because there is no similar function to perform. ATM machine have strongly constraint because without the limited amount of action the individual can nothing to do. ATM Machine have no good affordance because naive users have facing a lot of difficulty while using the ATM. Digital watch Digital watch have no good visibility because its screen is not visible in full sun light and in darken area. It is not consistence device because every button has its function, we cannot perform similar task with different button or method. Digital watch has less affordance because its button have no label, so the naïve user can not configure the time or date. Digital camera It has consistence function because every time we press the button the same work will be done against mentioned button. Good constraint because a person cannot capture video except listed format. Also we cannot change function or setting of camera. Less affordance because the new user can used Digital camera with facing some difficulties. Q.2 Solution Idea: [image: pK2ZpIj.png]

Assignment No. 2 Solution and Discussion Semester: Fall 2019 CS408 – Human Computer Interaction Question No. 1: Analyze the following scenario and write down seven stages of action for given particular scenario for solution. Scenario is: Suppose I want to go to market, but the tyre of my car got punctured. Now I have to repair it. You are required to write the seven stages of Gulf of Execution and Evaluation to solve the scenario. Human computer interaction and user experience design. One of the topics he covers in his book is a model/framework of how people act when they’re interacting in the world to reach their larger goals. This model is called the seven stages of action (or Norman’s Action Cycle) The model belongs to one of the most famous Interaction theories that have been used to model user behavior, evaluation, and to set up policies like to create user-friendly interfaces. The model can be divided into an execution phase and a phase of the evaluation. Scenario is: Suppose I want to go to market, but the tyre of my car got punctured. Now I have to repair it. It starts with the execution part • Specifying/forming a goal about something that you want to accomplish (My goal is going to market across the street but car tyre in punctured so I find first tyre shop ) • Forming an intention to act (I form the intention of crossing the street to reach the tyre puncture shop) • Selecting an action or a sequence of actions that will lead you to your set goal (I select the action to press the key to start the car and crosswalk signal for crossing the street ) • Execution of the action(s) (I actually do press the key to start the car and with the help to other to crosswalk signal by physical action and I do cross the street). After the execution part, the evaluation part begins: • Perception the state of the world/system (I Perceive that I’m now across the street to reach the shop) • Interpretation of this perception based on your expectations (I interpret this perception and help of other to find it) • Evaluating the outcome: Is the evaluation successful the problem is solved , goal reached and now go to the market . Question No. 2 Consider a scenario; you are an HCI specialist in a renowned software house. Here your task is to check out design principles for two given websites. • https://www.freelancer.pk/ • https://www.fiverr.com/ You are required to explain four Design principles according to the given websites. https://www.freelancer.pk/ ANS: Design Principles There is no real consensus in the design community about what the main principles of design actually are. That said, the following twelve principles are those mentioned most often in articles and books on the subject. Contrast One of the most common complaints designers have about client feedback often revolves around clients who say a design needs to “pop” more. While that sounds like a completely arbitrary term, what the client generally means is that the design needs more contrast. Contrast refers to how different elements are in a design, particularly adjacent elements. These differences make various elements stand out. Contrast is also a very important aspect of creating accessible designs. Insufficient contrast can make text content in particular very difficult to read, especially for people with visual impairments. Balance Every element of a design—typography, colors, images, shapes, patterns, etc.—carries a visual weight. Some elements are heavy and draw the eye, while other elements are lighter. The way these elements are laid out on a page should create a feeling of balance. There are two basic types of balance: symmetrical and asymmetrical. Symmetrical designs layout elements of equal weight on either side of an imaginary center line. Asymmetrical balance uses elements of differing weights, often laid out in relation to a line that is not centered within the overall design. Emphasis Emphasis deals with the parts of a design that are meant to stand out. In most cases, this means the most important information the design is meant to convey.Emphasis can also be used to reduce the impact of certain information. This is most apparent in instances where “fine print” is used for ancillary information in a design. Tiny typography tucked away at the bottom of a page carries much less weight than almost anything else in a design, and is therefore deemphasized. Proportion Proportion is one of the easier design principles to understand. Simply put, it’s the size of elements in relation to one another. Proportion signals what’s important in a design and what isn’t. Larger elements are more important, smaller elements less. Pattern Patterns are nothing more than a repetition of multiple design elements working together. Wallpaper patterns are the most ubiquitous example of patterns that virtually everyone is familiar with. In design, however, patterns can also refer to set standards for how certain elements are designed. For example, top navigation is a design pattern that the majority of internet users have interacted with. You are required to explain four Design principles according to the given websites. https://www.fiverr.com/ ANS: Security guarantee We build wordpress websites that have solid security measures build in to make them less prone to hacking and spam attacks. To date, none of the sites we have developed have been hacked or ddos attacked! Loading speed guarantee In our fast-paced world, your website needs to load fast too, under 3 seconds, if not visitors will leave, bounce rates increase and your conversions nosedive! We guarantee load speeds of under 2-3 seconds. Seo optimized guarantee Your site will be built with all the latest seo measures in place to make sure when Google crawls your site, your rankings will increase. We guarantee a seo optimized site. Mobile optimized guarantee With over 60% of internet traffic going over mobile devices, your site should work seamless on all platforms. We guarantee a mobile optimized site. User friendly guarantee We build clean designed sites and follow the latest ux and ui design principles, making sure your website users have a pleasant experience on your site and you will enjoy low bounce rates.

[image: MQpxBtW.png] Intended Interaction: Objects Identifier system for blind users (a) Device Name (b) Features © Solved Problems Input Device(s) Mobile Camera The device must have the built in camera to capture the image of object. The image of object will be stored in the device for image processing. A blind or visually impaired people find difficulties to recognize different objects by just touching them (unless trained). This input device will solve their problem in recognizing these objects by capturing the image of the object through the camera of the device. Output Device(s) Synchronized Speaker A synchronized speaker that speaks out that which objects is this. The main feature of the speaker is to speak out the object name after recognition of the captured image or video. A blind or visually impaired people find difficulties to recognize different objects by just touching them. This device will solve their problem by speaking out the name of object by capturing the image. [image: YPXZaaa.png] OR: Goal and Sub-Goals: Looking at the operators an obvious one to resolve this goal is Update paragraph Which has the pre-condition ‘required page of the file should be opened and cursor at start of paragraph’. We therefore have a new sub-goal: move to paragraph. The pre-condition is ‘cursor anywhere in document’ (which we can meet) but we want the second paragraph so must initially be in the first. We set up a new sub-goal, move to start, with pre-condition ‘cursor anywhere in document’ and result ‘cursor at start of document’. We can then apply move to paragraph and finally update paragraph. We assume some knowledge here (that the second paragraph is the paragraph after the first one).