Tools Books
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WonderfulReview Date: 2000-03-31

Used price: $37.00

Robust step-by-step process to web usability and task focusReview Date: 2006-08-18
This book takes a completely different approach: it assumes that the people who use web sites just want an easy life. This requires simplicity - not complexity. So, this book on web site development hardly mentions technology. Instead, it focuses on the customers of the technology: it explains how to design e-commerce sites that ordinary people can use (not just yourself, your boss or client!).
The book has now been on the market for three years, but never received the same attention as for instance the usability books from Jakob Nielsen or Steve Krug.
But if you would like a more structured approach then this book is a good pick. His approach is to design a clear roadmap for the web site design or re-design process with lots and lots of forms and checklists that we can put into use Monday morning.
CUSTOMER-CENTRED DESIGN PROCESS
David Travis is a British usability expert with a background from designing Industry Standards. He has designed a customer-centred design process that has four steps. I will outline these steps below:
Step 1: ANALYZE THE OPPORTUNITY
- Identify the stakeholders (who are they? what are their motivations? prioritise the list!)
- Write the site mandate (why it exists? which objectives?)
- Segment the market (e.g. by using Moore's technology adoption lifecyle)
Step 2: BUILD THE CONTEXT OF USE
- Build customer profiles (demographics, web site behavior, needs, and then you design personas)
- Build environment profiles (physical, socio-cultural, and technical)
- Build task profiles (prioritise task portfolio: value to customers vs. ease of implementation)
Step 3: CREATE THE USER EXPERIENCE (an iterative process)
- Develop key performance indicators for the site
- Develop information architecture (the high-level, conceptual model)
- Lay out the screens (the detailed design)
- Evaluate usability (using experts and representative customers)
Step 4: TRACK REAL-WORLD USAGE AND CONTINUOUSLY IMPROVE THE SITE.
The job is done - isn't it? To paraphrase Chuchill: this is not the end. It is not even the beginning of the end. This is the end of the beginning. You will need to change and update the web site as your customers change, if you want a successful web site. These key measures will keep your finger on the pulse of your site: Conversion rate, usage rate by registered customers, fulfilment performance and customer retention. Note that the two last ones are "beyond-the-interface" metrics.
So regularly you need to go back to step 2 or even step 1 again and improve wherever you can. As Einstein said: "The questions remain the same, but the answers differ" as we evolve.
Each of these bullets is devoted a chapter with tools and techniques, so the process is well documented. The author has refined his customer-centred design process through a lot of work with customers, such as HP, Motorola, Financial Times, and Thomas Cook).
Based on his experience, the author suggests three components of a web site's usability.
SCREEN DESIGN:
Although, most web site professionals nowadays accept usability as key to success, then many have a very narrow view of it. According to the author, many think it's only about screen design: choosing the correct fonts, colours, and icons. But in reality, usability is a process. It is not something that can be stapled on at the end of development. It's like putting lipstick on a bulldog ... Optimising screen design is perhaps only 15% of a web site's usability performance.
CONSISTENCY:
Screen design is just one of 3 important components. Consistency is the second key feature and it may account for about 25% of a web site's usability, says David Travis. We can all point to annoying inconsistencies in (or between) much of the software we use. The same goes for web sites.
TASK FOCUS:
The third component of usability, the remaining 60 %, is accounted for by task focus. You know a web site has task focus when you get a feeling that the person who designed the site knew exactly what you wanted to do. The site works the way you expect. There is no need to go searching through menus or dialogue boxes. The main things you want to do are there in front of you - easy to find and simple to carry out. It's intuitive, just like the best computer games, where very quickly the "interface" disappears and you are instead absorbed by the universe of the game - the task.
Of the three components of usability, task focus is the most complicated. Rules for good visual screen design are plentiful. Consistency is a matter of discipline and testing against relevant guides. But achieving task focus is much more complicated - it requires a process, and it is what this book attempts to do (cf. the four step process above).
If you are a structured person, you will love this book. Most usability books consist of many valuable guidelines and hints but are often rather unstructured in their process. This book offers a roadmap to success with the step-by-step approach.
If you are interested in e-commerce usability, then I also recommend you take a look at these books (less structured, but with a lot of useful guidelines):
- Jakob Nielsen: Prioritizing Web Usability (2006)
- Eisenberg: Call to Action: Secret Formulas to Improve Online Results (2005)
- Steve Krug: Don't make me think - A Common Sense Approach to Web Usability (2005)
PS. The book contains about 200 pages.
Peter Leerskov,
MSc in International Business (Marketing & Management) and Graduate Diploma in E-business
Used price: $45.35

E-Z Solve ratingReview Date: 2003-04-30
It is very good for normal application, But not complicated (do not expect yourself you will be able to solve partial differential equation).

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Wide variety of subjects. Perfect for classroom teaching!Review Date: 1998-10-22
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High marks from an early childhood psychologistReview Date: 2003-09-25

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Easy Does ItReview Date: 1997-06-22

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Not Fashion but Common SenceReview Date: 2000-08-10


informative little book for the interested readerReview Date: 2000-06-17

The Elements of Practical Mechanism and Machine ToolsReview Date: 2003-11-25
The first part of the book covers the fundamentals of mechanical design and kinematics. This is done with only simple shop mathematics. Basic definitions and formulas are given. The elements of levers and linkages are covered. Gears and gear trains are covered next. Pulleys and belts are the next subject. This is followed by the windlass and capstan. Variable motion using unusual wheel and gear shapes, sliding linkages, Roemer's wheels, eccentric escapements, etc. is next. Intermittent and reciprocating motion by wheels, geneva mechanisms, mangle wheels and racks, crown wheels, etc. follows. Sliding motion via inclined plane, screw, wedge, and cam is the next area covered (with special emphasis upon the screw press.) Escapements and pendulums of the type used in clockwork mechanisms are next. The following section covers flywheels, centripetal governors, and safety valves. Part One finishes up with mechanisms for modifying or translating motion such as sun and planet wheels, levers of Lagarouse, spiral cams, swash plates, and both Watt's and White's parallel motions.
The second part of this book covers a multitude of machines used in manufacturing, construction, and domestic purposes. First come winches and cranes. Next follows pile engines, hand jacks, the patent excavator (steam shovel), railway uncoupling, and dredging machines. Then a section of machine tools are covered (drilling machines, foot-lathes, punching machines, shears, and sawmills. Next is the smoke jack (a type of hot-air engine.) The common clock is then treated. The following section deals with hydraulic machines from suction pumps to presses. There is a good coverage next of water wheels and waterpower. Screw propellers for ships are then covered, as well as the water turbine. Motion of water in pipes and channels is next. The following section is a detailed examination of machine tools (engine lathes, planers, shapers, slotting machines, and shearing machines.) Textile machines for carding and spinning follow. Riveting machines for boilers and other large vessels are covered. Next we have extensive coverage of steam engines (including slide-valves, boilers, boiler feeders, and pressure gauges.) Then there is an entire chapter on the process and machinery of sugar refining. A full chapter on calculation of work and its hindrance by friction follows. Then comes a full chapter on pottery manufacture. Finally there is a concluding chapter on the theory and practice of metal cutting machinery (mostly lathes, shapers, and gear cutters- the horizontal universal milling machine does not seem to be covered or anticipated.)
All of these topics are illustrated with a multitude of crisp, sharp line drawings. You are not provided with specific dimensions since these are concept drawings- you where expected to be able to think for yourself when it came to implementation. I am convinced that an intelligent practical engineer could reconstruct the entire Industrial Age from this single, comprehensive little manual.

Important reference, various authorsReview Date: 1998-11-22
The book is terrific for orienting oneself in these growth areas of economic research, and would be an important reference for university libraries. At the price, it would be prohibitive for most students but would be useful for academics specializing or developing an interest in this area.
The entries are followed by a bibliography to assist you in chasing up further levels of detail as required after reading an entry of interest.
Some entries (Eg Macroeconomics) have several entries from several authors, and it is quite interesting to see the different points of views taken.
Related Subjects: Editors Parsers Browsers Publishing Systems Servers
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