We describe a technique to determine presence and attention levels of computer users. This technique relies on sonar using hardware that already exists on commodity laptop computers and other electronic devices. It leverages the fact that human bodies have a different effect on sound waves than air and other objects. We conducted a user study in which 20 volunteers used a computer equipped with...

Computer sind in der heutigen Welt, die Digitalisierung an Bedeutung gewinnt, zu einem unverzichtbaren Bestandteil des Lebens geworden. Insbesondere jüngster Zeit haben Pandemiebedingungen Menschen gezwungen, von Hause aus arbeiten, und meisten müssen ihre Arbeit auf Computern ausführen. Es gibt jedoch eine Vielzahl dem Markt. In dieser Studie wurde Effizienz neun Laptop-Modellen, als besten La...

With the rapid development of technology, especially computers, both hardware and software, users must add more knowledge to running computers. Not only operating it but also installing troubleshooting so that later will be accessible when faced with obstacles. SMK alumni mainly contribute unemployment due very few industry-standard job opportunities. Additional skills/competencies are needed e...

The goal of this study was to determine if laptop use in lecture negatively impacts learning outcomes of surrounding students taking notes on paper. Two sections of a large introductory biology course (>400 students/section) were zoned into a laptop-permitted and a laptop-free area. Two sections in which laptop users could sit anywhere served as the Control. There was no difference in the atten...

Erythema ab igne is a pigmented reticular skin lesion with telangiectasias caused by prolonged exposure to heat. This report describes the case of a 12-year-old adolescent girl with erythema ab igne induced by a laptop computer. The paper also discusses how computers generate heat and how important it is for the manufacturers of these devices to warn consumers of the potential hazards that coul...

UNLABELLED We have developed a new Internet service, which provides mobile access to bioinformatics databases and software tools. The BioWAP service facilitates access to basic bioinformatics databases and analysis tools from everywhere without a PC or a laptop computer. Both open source bioinformatics program suites and Internet services, which are not designed for mobile Internet access, were...

The need to provide low-cost learning technologies such as laptops or tablet computers in developing countries with the aim to bridge the digital divide as well as addressing the uneven standards of education quality has been widely recognised by previous studies. With this aim in mind, the Thai Government has launched the cȁOne Tablet PC Per Childdȁ (OTPC) policy and distributed 800,000 tablet...

Information and Communication Technologies (ICT) are now widespread in Australian schools but with variation in how, where, when and how much they are used. Computers may be located in a computer laboratory, distributed throughout the school, or students may use their own laptop computers. IT may be a subject in its own right or ICT may be used across all areas of the curriculum. It is how ICT ...

Mobile devices pose tremendous challenges to the design and implementation of information systems suited for mobile environments. While users expect similar functionality on their smart-phone as provided on their laptop or desktop computer, the hardware and communication platforms are still limited. Especially, data-intensive mobile applications require new ways of data management, processing, ...

The BLADEAXE is a guitar-like controller that uses “real world” audio excitations from six piezoelectric films (one per “string”) to drive a physical model of a guitar on a laptop. The BLADEAXE body is made out of laser cut acrylic sheets and can be easily reproduced. As a fully “plug and play” interface, it can be used on any computer to communicate with our open-source virtual-guitar software.