tailieunhanh - Research-Based Web Design & Usability Guidelines

This is the Official . Government edition of this publication and is herein identified to certify its authenticity. Use of the 0-16 ISBN prefix (if agency uses own block of ISBN, list full ISBN in this space) is for . Government Printing Office Official Editions only. The Superintendent of Documents of the . Government Printing Office requests that any reprinted edition clearly be labeled as a copy of the authentic work with a new ISBN. Legal Status and Use of Seals and Logos The seal and logo of the . Department of Health and Human Services (HHS) and the . General Services. | Research-Based Web Design Usability Guidelines Forewords by Michael O. Leavitt Secretary of Health and Human Services Ben Shneiderman Professor of Computer Science University of Maryland jiSEKVIc . GOVERNMENT OFFICIAL EDITION NOTICE AUTHENTICATED . GOVERNMENT INFORMATION GPO Use of ISBN This is the Official . Government edition of this publication and is herein identified to certify its authenticity. Use of the 0-16 ISBN prefix if agency uses own block of ISBN list full ISBN in this space is for . Government Printing Office Official Editions only. The Superintendent of Documents of the . Government Printing Office requests that any reprinted edition clearly be labeled as a copy of the authentic work with a new ISBN. ofHEAtfy Legal Status and Use of Seals and Logos The seal and logo of the . Department of Health and Human Services HHS and the . General Services Administration GSA authenticates the Research-Based Web Design Usability Guidelines as the official codification of Federal regulations established under the Federal Register Act. The HHS seal and logo displayed in this book are protected under the provisions of 42 . 1320b-10. The GSA seal and logo displayed in this book are protected under the provisions of 18 506. The unauthorized use of these seals and logos in a publication is prohibited and subject to a civil penalty of up to 5 000 for each unauthorized copy of it that is reprinted or distributed. It is prohibited to use the HHS or GSA seal or logo displayed in this book without the express written permission. To request permission to use the HHS seal or logo please submit a request to The . Department of Health and Human Services 200 Independence Avenue . Washington DC 20201 To request permission to use the GSA seal or logo please submit a request to . General Services Administration 1800 F Street . Washington DC 20405 For sale by the Superintendent of Documents . Government Printing Office Internet .