The document discusses principles of human-computer interface design proposed by Ben Shneiderman, including recognizing diversity in users, using consistent design, enabling shortcuts for experienced users, providing feedback, and reducing memory load. It also summarizes guidelines for designing dialog boxes, error messages, and preventing errors. Examples are given of how these principles can be applied to web design, such as making navigation fast for repeat users and providing explanations for new users. Consistency in menus, layout, and terminology is recommended.
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Introduction, History
Application in different fields like CAD, schematic capture, medicine, art etc.
Hardware concepts
2-D and 3-D algorithms
Line drawing, viewing transformations, other transforms (scaling, rotation, translation)
Curve Modeling
Mathematics of generation of parametric cureve like Bazier, Spline, Hermite
3D Object Modeling
Visible Surface Detection and Surface Rendering
Introduction to Animation
Text Book
Computer Graphics C Version – Hearn & Baker
this is VTU FINAL YEAR PROJECT REPORT full report is attached below.this alone with front pages attached Front pages report follows all the guidelines specified by vtu according to our college.
Introduction, History
Application in different fields like CAD, schematic capture, medicine, art etc.
Hardware concepts
2-D and 3-D algorithms
Line drawing, viewing transformations, other transforms (scaling, rotation, translation)
Curve Modeling
Mathematics of generation of parametric cureve like Bazier, Spline, Hermite
3D Object Modeling
Visible Surface Detection and Surface Rendering
Introduction to Animation
Text Book
Computer Graphics C Version – Hearn & Baker
It is a collection of programs that enables a person to manipulate visual images.
Super Paint (1973) was one of the earliest graphics software applications.
Currently Adobe Photoshop is one of the most used and best-known graphics programs.
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PRE-PROCESSING TECHNIQUES FOR FACIAL EMOTION RECOGNITION SYSTEMIAEME Publication
Humans share a universal and fundamental set of emotions which are exhibited through consistent facial expressions. Recognition of human emotions from the imaging templates is useful in a wide variety of human-computer interaction and intelligent systems applications. However, the automatic recognition of facial expressions using image template matching techniques suffer from the natural variability with facial features and recording conditions. In spite of the progress achieved in facial emotion recognition in recent years, the effective and computationally simple feature extraction and classification technique for emotion recognition is still an open problem. Image pre-processing and normalization is significant part of face recognition systems. Changes in lighting conditions produces dramatically decrease of recognition performance. In this paper, the image pre-processing techniques like K-Nearest Neighbor, Cultural Algorithm and Genetic Algorithm are used to remove the noise in the facial image for enhancing the emotion recognition. The performance of the preprocessing techniques are evaluated with various performance metrics.
Report on student-faculty document sharing android projectAlamgir Hossain
This is the report for a android based project "Student-Faculty document sharing". There are two sections. One for student and another for faculty.
The project created by :
Md. Alamgir Hossain
Computer Science and Engineering
Jessore University of Science and Technology
This ppt's introduced Basics of computer graphics, which helps to diploma in computer engineering, DCA BCA, BE computer science student's to improve study in computer graphics.
It is a collection of programs that enables a person to manipulate visual images.
Super Paint (1973) was one of the earliest graphics software applications.
Currently Adobe Photoshop is one of the most used and best-known graphics programs.
This documentation have all the details about school management system, even in this document have DFD,ERD,FDD digram that are useful to create database. to get more details about this product plz mail me on (aki_string@yahoo.co.in) thanks.....
PRE-PROCESSING TECHNIQUES FOR FACIAL EMOTION RECOGNITION SYSTEMIAEME Publication
Humans share a universal and fundamental set of emotions which are exhibited through consistent facial expressions. Recognition of human emotions from the imaging templates is useful in a wide variety of human-computer interaction and intelligent systems applications. However, the automatic recognition of facial expressions using image template matching techniques suffer from the natural variability with facial features and recording conditions. In spite of the progress achieved in facial emotion recognition in recent years, the effective and computationally simple feature extraction and classification technique for emotion recognition is still an open problem. Image pre-processing and normalization is significant part of face recognition systems. Changes in lighting conditions produces dramatically decrease of recognition performance. In this paper, the image pre-processing techniques like K-Nearest Neighbor, Cultural Algorithm and Genetic Algorithm are used to remove the noise in the facial image for enhancing the emotion recognition. The performance of the preprocessing techniques are evaluated with various performance metrics.
Report on student-faculty document sharing android projectAlamgir Hossain
This is the report for a android based project "Student-Faculty document sharing". There are two sections. One for student and another for faculty.
The project created by :
Md. Alamgir Hossain
Computer Science and Engineering
Jessore University of Science and Technology
This ppt's introduced Basics of computer graphics, which helps to diploma in computer engineering, DCA BCA, BE computer science student's to improve study in computer graphics.
This lecture provide a detail concepts of user interface development design and evaluation. This lecture have complete guideline toward UI development. The interesting thing about this lecture is Software User Interface Design trends.
Topics include:
Principles of user interface
UI design process
Design principles
Wireframe
Graphic icon, image and colour physiology
User experience and research
“Markets are certainly looking at election results with some apprehension, but what is also true is that they are in for a correction. Elections might act as the trigger for such a correction,” said Jagannadham Thunuguntla, equity head at SMC Capitals.
Usability engineering is a field that is concerned generally with human-computer interaction and specifically with devising human-computer interfaces that have high usability or user friendliness. It provides structured methods for achieving efficiency and elegance in interface design.
1 PROGRAM ISEM RESEARCH PAPER FOR APPLIED.docxhoney725342
1
PROGRAM: ISEM
RESEARCH PAPER FOR APPLIED PROJECT
GESTURES & DESIGN PATTERNS IN TOUCHSCREEN SOFTWARE
DEVELOPMENT: A USABILITY STUDY
KATIE TOBIN
Date: December, 18th 2011
5
TABLE OF CONTENTS
ABSTRACT....................................................................................................................3
KEYWORDS ..................................................................................................................3
1. INTRODUCTION ......................................................................................................4
2. PROBLEM STATEMENT AND JUSTIFICATION ..............................................................7
3. LITERATURE REVIEW - ANALYSIS OF RELATED WORK ................................................9
4. SOLUTION APPROACH ...........................................................................................15
5. WORK PLAN ..........................................................................................................20
6. PROTOTYPE IMPLEMENTATION ..............................................................................21
7. USABILITY STUDY RESULTS ....................................................................................50
8. CONCLUSIONS REACHED .......................................................................................52
9. REFERENCES ..........................................................................................................53
APPENDICES ..............................................................................................................54
1
ABSTRACT
This goal of this research is to examine several common usability design flaws and to present a
plan to create a set of best practices that will contain both user-tested design patterns and proper
gesture use that bring about better user task outcomes. It also describes how a usability study
would be carried out, including the process of analyzing the study results and finding the best
design patterns for those tasks. This research is needed, because there are a limited amount of
usability-tested software design patterns for use on mobile touchscreen devices and this re-
searcher believes that usability has understandably suffered in this medium. As any mobile
touchscreen device user can attest, it can be surprisingly frustrating to perform a simple task -
such as copying and pasting text from one location to another, or filling out a simple form. The-
se tasks and more were tested on a mobile touchscreen device in order to identify and attempt to
solve these common usability problems.
KEYWORDS:
Touchscreen, Gestures, Software, Usability, Affordances, Usability Study, Software Design Pat-
terns
5
1. INTRODUCTION
Touchscreen devices can be a nightmare to operate. Nearly everyone has experienced the “Fat
Finger Problem” when trying to type some text on a ...
I am glad to present you my 9 web rules guide, which is focused on programmers with no notions about UX and explains 9 essential aspects of web usability to take into account in any web development.
I'm very grateful to have done this project with the support of Dani Amo, whom I want to thank very much.
I hope you enjoy it!
This heuristic evaluation that I completed for a client to establish an authentic and effective user experience. The evaluation defined problematic areas that decrease their ROI and increase their drop-off rate.
As part of a series of bi-weekly training on UX design and architecture, I presented a three part series on application design frameworks and best practices for interaction design patterns for desktop and mobile
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
Characterization and the Kinetics of drying at the drying oven and with micro...Open Access Research Paper
The objective of this work is to contribute to valorization de Nephelium lappaceum by the characterization of kinetics of drying of seeds of Nephelium lappaceum. The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven. The temperatures and the powers of drying are respectively: 50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nephelium lappaceum do not present a phase of constant kinetics. The coefficients of diffusion vary between 2.09.10-8 to 2.98. 10-8m-2/s in the interval of 50°C at 70°C and between 4.83×10-07 at 9.04×10-07 m-8/s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ. mol-1 expressed the effect of the temperature on effective diffusivity.
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
Willie Nelson Net Worth: A Journey Through Music, Movies, and Business Venturesgreendigital
Willie Nelson is a name that resonates within the world of music and entertainment. Known for his unique voice, and masterful guitar skills. and an extraordinary career spanning several decades. Nelson has become a legend in the country music scene. But, his influence extends far beyond the realm of music. with ventures in acting, writing, activism, and business. This comprehensive article delves into Willie Nelson net worth. exploring the various facets of his career that have contributed to his large fortune.
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Introduction
Willie Nelson net worth is a testament to his enduring influence and success in many fields. Born on April 29, 1933, in Abbott, Texas. Nelson's journey from a humble beginning to becoming one of the most iconic figures in American music is nothing short of inspirational. His net worth, which estimated to be around $25 million as of 2024. reflects a career that is as diverse as it is prolific.
Early Life and Musical Beginnings
Humble Origins
Willie Hugh Nelson was born during the Great Depression. a time of significant economic hardship in the United States. Raised by his grandparents. Nelson found solace and inspiration in music from an early age. His grandmother taught him to play the guitar. setting the stage for what would become an illustrious career.
First Steps in Music
Nelson's initial foray into the music industry was fraught with challenges. He moved to Nashville, Tennessee, to pursue his dreams, but success did not come . Working as a songwriter, Nelson penned hits for other artists. which helped him gain a foothold in the competitive music scene. His songwriting skills contributed to his early earnings. laying the foundation for his net worth.
Rise to Stardom
Breakthrough Albums
The 1970s marked a turning point in Willie Nelson's career. His albums "Shotgun Willie" (1973), "Red Headed Stranger" (1975). and "Stardust" (1978) received critical acclaim and commercial success. These albums not only solidified his position in the country music genre. but also introduced his music to a broader audience. The success of these albums played a crucial role in boosting Willie Nelson net worth.
Iconic Songs
Willie Nelson net worth is also attributed to his extensive catalog of hit songs. Tracks like "Blue Eyes Crying in the Rain," "On the Road Again," and "Always on My Mind" have become timeless classics. These songs have not only earned Nelson large royalties but have also ensured his continued relevance in the music industry.
Acting and Film Career
Hollywood Ventures
In addition to his music career, Willie Nelson has also made a mark in Hollywood. His distinctive personality and on-screen presence have landed him roles in several films and television shows. Notable appearances include roles in "The Electric Horseman" (1979), "Honeysuckle Rose" (1980), and "Barbarosa" (1982). These acting gigs have added a significant amount to Willie Nelson net worth.
Television Appearances
Nelson's char
Natural farming @ Dr. Siddhartha S. Jena.pptxsidjena70
A brief about organic farming/ Natural farming/ Zero budget natural farming/ Subash Palekar Natural farming which keeps us and environment safe and healthy. Next gen Agricultural practices of chemical free farming.
1. Shneiderman 's Principles of Human-Computer Interface
Design:
Recognize Diversity (kepelbagaian)- In order to recognize diversity, you, the designer, must
take into account the type of user frequenting your system, ranging from novice user,
knowledgeable but intermittent user and expert frequent user.
Each type of user expects the screen layout to accommodate their desires, novices needing
extensive help, experts wanting to get where they want to go as quickly as possible.
Accommodating both styles on the same page can be quite challenging. You can address the
differences in users by including both menu or icon choices as well as commands (ie. Command
or Control P for Print as well as an icon or menu entry), or providing an option for both full
descriptive menus and single letter commands.
You Should Use the Eight Golden Rules of Interface Design:
1. Strive for consistency
o consistent sequences of actions should be required in similar situations
The Microsoft Office user interface is consistent for a reason.
o identical terminology should be used in prompts, menus, and help screens
2. o consistent color, layout, capitalization, fonts, and so on should be employed
throughout.
2. Enable frequent users to use shortcuts
o to increase the pace (kelajuan) of interaction use abbreviations, special keys,
hidden commands
3. Offer informative feedback
o for every user action, the system should respond in some way (in web design,
this can be accomplished by DHTML - for example, a button will make a clicking
sound or change color when clicked to show the user something has happened)
Windows system key combinations
F1: Help
CTRL+ESC: Open Start menu
ALT+TAB: Switch between open programs
ALT+F4: Quit program
SHIFT+DELETE: Delete item permanently
Windows Logo+L: Lock the computer (without using
CTRL+ALT+DELETE)
3. 4. Design dialogs to yield closure
o Sequences of actions should be organized into groups with a beginning, middle,
and end. The informative feedback at the completion of a group of actions
shows the user their activity has completed successfully
o A good example of this is sending an email, you begin by deciding who it will be
sent to, you then compose the email and finally, you send the email. Sending is
confirmed by an on screen message and the email appearing in your ‘sent’
folder.
5. Offer error prevention and simple error handling
o design the form so that users cannot make a serious error; for example, prefer
menu selection to form fill-in and do not allow alphabetic characters in numeric
entry fields
o if users make an error, instructions should be written to detect the error and
offer simple, constructive, and specific instructions for recovery
o segment long forms and send sections separately so that the user is not
penalized by having to fill the form in again - but make sure you inform the user
that multiple sections are coming up
4. 6. Permit easy reversal of actions
7. Support internal locus of control (put user in control)
o Experienced users want to be in charge. Surprising system actions, tedious
sequences of data entries, inability or difficulty in obtaining necessary
information, and inability to produce the action desired all build anxiety and
dissatisfaction
o We should ensure that systems do not become ‘sluggish’ or ‘clunky’ due to the
more sophisticated media that devices are now expected to handle. Efficient
and careful use of resources is key to this.
8. Reduce short-term memory load
o A famous study suggests that humans can store only 7 (plus or minus 2) pieces of
information in their short term memory. You can reduce short term memory
load by designing screens where options are clearly visible, or using pull-down
menus and icons
o Don’t force users to remember complex sequences of actions or difficult codes in
order to complete tasks.
Shneiderman's guidelines for error messages include:
– Avoid using term like FATAL, INVALID, BAD
– Audio warnings
– Avoid UPPERCASE and long code numbers
– Messages should be precise rather than vague (samar2)
– Context -sensitive help
● Google: did you mean committee
5. ‘Drag and Drop’ being used to uninstall applications
Prevent Errors - The third principle is to prevent errors whenever possible. Steps can be
taken to design so that errors are less likely to occur, using methods such as organizing
screens and menus functionally, designing screens to be distinctive and making it
difficult for users to commit irreversible actions. Expect users to make errors, try to
anticipate (menjangka) where they will go wrong and design with those actions in mind.
Discussion 1
How can we relate the recommendations from human-computer interface design research
directly to web design?
1. Recognize Diversity
o make your main navigation area fast loading for repeat users
o provide a detailed explanation of your topics, symbols, and navigation options
for new users
o provide a text index for quick access to all pages of the site
o ensure your pages are readable in many formats, to accommodate users who are
blind or deaf, users with old versions of browsers, users on slow modems or
those with graphics turned off
2. Strive for consistency in:
o menus
o help screens
o color
o layout
o capitalization
o fonts
6. o sequences of actions
3. Offer informative feedback - rollover buttons, sounds when clicked
4. Build in error prevention in online forms
5. Give users control as much as possible
6. Reduce short term memory load by providing menus, buttons or icons. If you use icons,
make sure you have a section which explains what they mean. Make things obvious by
using constraints - grayed out items in menus for options not available in that page
7. Make use of web conventions such as underlined links, color change in links for visited
pages, common terminology.
8. Provide a conceptual model of your site using a site map or an index
Discussion 2
Understanding the QPM User Interface
All the pages in the web-based QPM user interface have a consistent look and feel.
Figure 1-1 Example of a QPM Page
Table 1-1 describes the common elements in each page.
Table 1-1 Common GUI Elements in a QPM Page
Number Area Description
1 TOC Provides up to two additional levels of navigation, if required:
7. • A submenu for the selected option.
• In a wizard context, this area displays the wizard steps.
2 Path bar Provides a context for the displayed page. Indicates from which tab and option the
current page is derived.
3 Content
area
Displays the page in which you perform application tasks.
4 QPM tabs Contains tabs that provide access to QPM functionality. Click a tab to access its
options:
• Dashboard—The Dashboard is the QPM homepage and provides a launch point
to the commonly used QoS management operations.
• Devices—Contains options for managing devices and device groups in the QPM
inventory.
• Provision—Contains options for defining policy groups and policies, configuring
QoS for IP telephony, and working with global library policy components.
This tab also contains options for deploying QoS policies and for previewing the
CLI configuration on the devices. You can view and restore previously deployed
jobs through this tab.
• Monitor—Contains options for monitoring traffic on devices with QoS policies
attached to them. You can perform Real-time, Historical, and Threshold analysis
of the traffic.
• Administration—Contains additional administration options.
5 Option bar Displays the options available for the selected tab.
Discussion 3
Designing software that people intuitively know how to use is hard. Getting your product to a point
that requires a very small learning curve takes a great design and a simple interface.
Check out this example of a simple, effective screen layout.
8. A: Clean menu, easy to navigate
B: Simple use of icons to enhance understanding
C: Uncluttered page title
D: Useful sidebar, relative to current content
E: Subtle secondary menu for uncommon tasks
EXERCISE I
Can you spot the difference? Very consistent, but a recipe for disaster.
In this example, details like selecting the receiver, selecting products and amounts etc. should
behave the same - that's consistency. Appearance should be significantly different.
Clue
Consistent behavior means: Things that look the same should behave the same.
Adequate appearance means: the look helps the user predict the functionality.
10. Figure 2: Yahoo Interface
Tips 1
Enterprise interface programs such as corporate website have three primary aims:
coherence, symbolism, and positioning.
Coherence
A coherent interface presents the enterprise clearly and comprehensively, conveying
an understandable picture of the organization’s structure and functioning, products
and services to clients, internal communications and management policy, and overall
mission and goals. Building a legible, easily navigable corporate web structure is
more than just a graphic user interface issue. A well-structured site rich with useful
content directly represents the depth and breadth of an enterprise more
comprehensively than any previous medium.
Symbolism
As networked work environments become the norm and various forms of
telecommuting and remote access become routine, web-based work environments will
become the dominant force in creating and maintaining the corporate ethos, attitudes,
and values. For most employees the organizational web presence has become the
most visible and functional evidence of social cohesion and common purpose across
the enterprise.
Positioning
A clear and recognizable identity program helps distinguish an enterprise from peers
and competitors. This is especially critical on the Internet, where everyone has a web
site and all web sites appear in the same limited venue (a browser window on the
11. user’s screen). A user may visit a dozen organizational sites in a browsing session
and be exposed to many graphic themes. Web users’ expectations of the Internet as a
communications medium are determined mainly by what they have seen in other
sites, and what they’ve seen is mostly like confetti: weightless, colorful, and chaotic.
Will users remember your pages if your site looks like nothing else they’ve seen in
your larger enterprise?
Further Reference
1. http://www.ssw.com.au/ssw/Standards/Rules/RulesToBetterInterfacesEdit.aspx
2. http://www.usabilitypost.com/2009/04/15/8-characteristics-of-successful-user-interfaces/