9: Platform and Posture in Java

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9: Platform and Posture
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browser: informational Web sites, transactional Web sites, and Web applications. As with many of the categorizations we offer in this book, the lines between these can be fuzzy. Consider them to represent a spectrum upon which any Web site or application can be located.
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Informational Web sites
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Web browsers were originally conceived of as a means of viewing shared and linked documents without the need for cumbersome protocols like File Transfer Protocol (FTP), Gopher, and Archie. As a result, the Web was originally made up solely of collections of these documents (or pages) referred to as Web sites. We continue to use the term to refer to informational services on the Web whose level of interaction primarily involves searching and clicking on links. Web sites, as described, can easily be conceived of as sets of pages or documents organized sequentially or hierarchically, with a navigation model to take users from one page to another, as well as a search facility to a provide more goal-directed location of specific pages. Plenty of Web sites still exist out there, in the form of personal sites, corporate marketing and support sites, and information-centric intranets. In such informational Web sites, the dominant design concerns are the visual look-and-feel, the layout, navigational elements, and the site structure (information architecture). Web sites do not typically exhibit complex behavior (where the result of a user interaction is dependent on application state), and therefore don t often require the services of interaction designers. As this book is focused on interaction design, we won t attempt to address the many aspects of designing Web sites that have been covered in great detail in many other volumes. Steve Krug s Don t Make Me Think!, Louis Rosenfeld and Peter Morville s Information Architecture, and Jeffrey Veen s The Art and Science of Web Design, in particular, cover the essential elements of Web design in a clear and straightforward manner. Jakob Nielsen s useit.com Web site is also an excellent resource.
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Postures for informational Web sites
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Sites that are purely informational, which require no complex transactions to take place beyond navigating from page to page and limited searching, must balance two forces: the need to display a reasonable density of useful information and the need to allow first-time and infrequent users to learn and navigate the site easily. This implies a tension between sovereign and transient attributes in informational sites. Which stance is more dominant depends largely on whom the target personas are and what their behavior patterns are when using the site: Are they infrequent or onetime users, or are they repeat users who will return weekly or daily to view content
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Part II: Designing Behavior and Form
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The frequency with which content is updated on a site does, in some respects, influence this behavior: Informational sites with real-time information will naturally attract repeat users more than a site updated once a month. Infrequently updated sites may be used more for occasional reference (assuming that the information is not too topical) rather than for heavy repeat use and should thus be given more of a transient stance than a sovereign one. What s more, the site can configure itself into a more sovereign posture by paying attention to how often a particular user visits. Sovereign attributes Detailed information display is best accomplished by assuming a sovereign stance. By assuming full-screen use, designers can take advantage of all the space available to clearly present the information as well as navigational tools and wayfinding cues to keep users oriented. The only fly in the ointment of sovereign stance for the Web is choosing which fullscreen resolution is appropriate. (To a lesser degree, this is an issue for desktop applications, though it is easier for creators of desktop software to dictate the appropriate display.) Web designers need to make a decision early regarding what resolution to optimize the screen designs for. While it is possible to use a liquid layout to flexibly display content in a variety of browser window sizes, your designs should be optimized for common display sizes and should accommodate the lowest common denominator appropriate for the primary persona. Quantitative research is helpful in determining this: Among people similar to your personas, how many really have 800x600 screens these days Transient attributes The less frequently your primary personas access the site, the more transient a stance the site needs to take. In an informational site, this manifests itself in terms of ease and clarity of navigation and orientation. Sites used for infrequent reference might be bookmarked by users: You should make it possible for them to bookmark any page of information so that they can reliably return to it at any later time. Users will likely visit sites that are updated weekly to monthly only intermittently, so navigation must be particularly clear. If the site can retain information about past user actions via cookies or server-side methods and present information that is organized based on what interested them previously, this could dramatically help less frequent users find what they need with minimal navigation (assuming that a user is likely to return to similar content on each visit to the site).
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