Ergonomic investigation on pedestrian crossing with traffic light signalization.

This article is about the risk behavior adopted by pedestrians at crosswalks with traffic light equipment. It was observed that many pedestrians take risk to cross the Presidente Vargas Avenue. This avenue is located in downtown in Rio de Janeiro city, Brazil, and has a heavy vehicular traffic and intense pedestrian flow.

Point Navigation Map method to track low-income mobile user's interaction.

Mobile phones obtained large popularization in Brazil thanks to pre-paid (pay as you go) contracts. This kind of contract represents 82% of mobile phone connections in Brazil, corresponding to 143 million in a total of 174 million mobile phone accesses in the country. In this scenario, a research about the usability of mobile phones with 17 to 24 year old youngsters, living in poor communities, enrolled in the NGO Spectaculu.

An ergonomic study on the navigation structure and information units of websites with multimedia content. A case study of the Xbox 360 promotional website.

This paper presents an ergonomic study on the navigation structures and information units of entertainment sites with multimedia content. This research is a case study on the XBOX 360 promotional website. It analyzes the presentation of the content on a grid that simulates the spatial displacement of the screen's elements and evaluates the interaction that the page allows for, from the users' point of view.

The ergonomic evaluation of a virtual learning environment usability.

The article presents the processes and the results of the application of some ergonomic techniques, used to evaluate the usability of the virtual learning environment adopted by the Distance Education Center of the Federal Institute of Espírito Santo - Brazil.

User's demography and expectation regarding search, purchase and evaluation in mobile application store.

This article is result from a questionnaire about mobile app store usage. The objective of this work was to collect information about user needs and opinion regarding search, purchase and evaluation process in Android Market, Apple App Store, BlackBerry App World and Nokia Ovi Store. The data collected was analyzed to identify the positive and negative usability aspects, if the process to perform these task are any different in those stores and if the users are satisfy with their store or if they have any complains about it.

Ergonomics and usability of children interfaces: Spore®, the case study.

This study supports itself in ergonomic concepts and usability criteria by prioritizing the identification and correction of problems found during the interaction of children with projected interfaces for them and left from the cognitive, interactional and interfacial difficulties caused by the excesses of color, elements and animation in sites and games, between them the difficulty of recognition of the information during the interaction with the elements of grid of the interface. The results of the methodology had proven that 78.38% of the 37 children got so absorbed by the game and forgot to fulfill their tasks, at least partially, and that the application of the supported ergonomic beddings in usability criteria is imperative.

An ergonomic study on the biomechanical consequences in children, generated by the use of computers at school.

This research deals with the influence of the computer use in schools related to the children posture, in an ergonomic point of view. The research tries to identify probable causes for the children early postural constraints, relating it to the sedentary behavior and the lack of an ergonomic project in schools. The survey involved 186 children, between 8 and 12 years old, students of a private school in Rio de Janeiro-Brasil.

Usability issues in Learning Management Systems (LMS).

This project is about the usability of Learning Management Systems (LMS), focusing on the specific case of the open source system Moodle. Specifically, this project is about communication and collaboration tools that are used by teachers on the system. This study investigates whether usability problems hamper the use teachers make of these tools.

Mobile phones and elderly people: a noisy communication.

Knowing the users is capital for building user-friendly digital interfaces. One way to think about the users is considering their familiarity with this technology. This article presents the results of twelve interviews with elderly people residing in the so-called South Zone of Rio de Janeiro (Brazil) who have used mobile phones over at least one year.