Advances in network communications and embedded technologies, and the increasing popularity of personal digital assistants and cell-phones is turning Ubiquitous Computing into a reality. The high availability of data and services promotes a new computational environment that goes beyond the physical limits of personal computers. This paper presents a generic model for ubiquitous applications, w...

The proliferation of mobile computing devices including laptops, personal digital assistants (PDAs), and wearable computers has created a demand for wireless personal area networks (PANs). PANs allow proximal devices to share information and resources. The mobile nature of these devices places unique requirements on PANs, such as low power consumption, frequent make-and-break connections, resou...

This paper presents the observational method of scenario and task based interviews to evaluate software usability. This is a flex form of field usability tests, which was adapted to Brazilian Institute of Geography and Statistics corporate context. This technique was created to be implemented with the users using PDAs (Personal Digital Assistants), mobile devices for statistical surveys. A soft...

This paper studies requirements for achieving personal trusted devices. Such devices can be for example smart cards or personal digital assistants. We consider both hardware and operating system security. Together they ensure that the device is trustworthy and is able to protect it’s user’s electronic identity (his private key) and data. We study some security problems with smart cards, and giv...

We present an automatic speech-to-speech translation system for Personal Digital Assistants (PDAs) that helps oral communication between Japanese and English speakers in various situations while traveling. Our own compact large-vocabulary continuous speech recognition engine and compact translation engine based on a lexicalized grammar provided the basis for the Japanese/English bi-directional ...

The application architecture of Newton, a technology for supporting Personal Digital Assistants (PDAs), is described. It combines a dynamic, object-oriented language called NewtonScript with a hierarchical view system and a persistent object store. It also contains extensible subsystems for communications and user-input recognition. In addition to PDA devices, the portable implementation has be...

Der Artikel diskutiert die Verwendung Java-fähiger Mobiltelefone und Personal Digital Assistants zum Führen elektronischer Patiententagebücher. Es wird eine generische Architektur für eine solche Software vorgestellt, die sich im Wesentlichen verschiedener Open-Source-Bibliotheken bedient. Prototypisch wird ein elektronisches Allergietagebuch umgesetzt, das die Eingabe von Daten durch den Patie...

This paper describes the operating systems – OS – for personal digital assistants – PDAs. Three systems, namely Windows CE, Palm OS, and Symbian OS are discussed. At first the general features of PDA operating systems are introduced. Then the differences of the three systems are discussed from the functionality, usability, and scalability of each system. After that some future predictions are g...

Personal Digital Assistants (PDAs) have become a part of everyday life. DermaMan is a freely available, Java-based, dermatology-specific calculator for handheld devices. It includes modules to compute PASI, MASI, SCORAD, and for calculations related to topical PUVA and Botox (R) administration.