Applying Usability to A Knowledge Based System

将使用可用性工程技术重新设计癌症遗传学跟踪数据库，以改进当前系统的功能和可用性。这一点很重要，因为它将导致一个更容易使用和学习的系统，将减少出错的机会，并将提高生产率和用户满意度。信息学的现状为创造有助于减少医疗差错的工具提供了可能性。该跟踪数据库的重新设计将分三个阶段完成。第一阶段将使用可用性分析的结果来重新设计癌症遗传学跟踪数据库并制作其原型。在第二阶段，将进行可用性研究，以确保系统功能齐全、易于使用、易于学习，并满足用户的目标。可用性研究将包括启发式评估、击键级别模型、大声说话方法和认知漫游技术。将根据这些研究的结果对系统进行修改。将对ICD编码与VS的优点和缺点进行研究。SNOMED之后选择了最有用的医疗信息编码系统。在第三阶段，最后的重新设计将与使用对象内设计的旧系统进行比较，以确定重新设计是否降低了错误率、提高了生产率和用户满意度。随后将进行调查，以确定重新设计的应用程序的感知可用性。在整个重新设计过程中，将制定具体的可用性指导方针，以设计本质上是计算性和基于知识的医疗保健软件。

A cancer genetics-tracking database will be redesigned using usability engineering techniques to improve the functionality and usability of the current system. This is important because it will lead to a system that is easier to use and learn, will decrease the chance of errors, and will increase productivity, and user satisfaction. The current state of informatics offers the potential for the creation of tools to assist in the reduction of medical errors. The redesign of this tracking database will be completed through a three-phase process. The first phase will use the results of a usability analysis to redesign and prototype the cancer genetics-tracking database. In the second phase, usability studies will then be conducted to ensure that the system is functional, easy to use, easy to learn, and meets the goals of the users. The usability studies will include heuristic evaluations, keystroke level models, talk-aloud methods, and cognitive walkthrough techniques. The system will be modified based upon the results of these studies. Research will be compiled on the advantages and disadvantages of ICD coding Vs. SNOMED followed by the selection of the most useful system for coding medical information. In the third phase the final redesign will be compared to the old system using a within-subject design to determine if the redesign decreases the error rate, increases productivity, and user satisfaction. This will be followed-up with a survey to determine the perceived usability of the redesigned application. Throughout the redesign process, specific usability guidelines will be developed for designing healthcare software that is computational and knowledge- based in nature.