Lithium batteries have been widely used as a power source for numerous small devices such as mobile phones and laptop computers. Recently, the lithium battery is expected to be used as a power source for electric vehicles. For the electric vehicles application, an improvement of energy and power densities and safety is required. In this review, a brief explanation of structure and mechanism of ...

Fitting newly important topics into an already crowded IS/IT curriculum is an ongoing challenge. In this paper we present an innovative and simple way to introduce and demonstrate computer clustering concepts in less than a single class hour, at no cost, by constructing a high performance cluster in the classroom using student laptop computers, classroom Ethernet facilities, and free, downloada...

This work presents a flexible development and testing environment, created for evaluating the performance and analyzing the characteristics of interfaces used by peripheral devices. The versatility of the presented instrument is due to the integration of the Matlab/Simulink tools with a custom reconfigurable hardware platform using the PCMCIA bus of conventional laptop computers. The hardware p...

The advent of portable laptop computers, palmtops, and personal digital assistants with integrated communication capabilities facilitates mobile computing. With an increasing amount of audio and video being sent over public, packet-switched networks, the ability to provide quality of service (QoS) guarantees may be more important in today's networks. Therefore, supporting a high Quality of Serv...

background: although it is one of the most toxic nonradioactive elements, mercury is widely used in dental amalgam. mercury is a toxic element which can damage various organs such as central nervous system, renal, respiratory and hematologic systems. the adverse health impacts associated to exposure to some common sources of electromagnetic fields including laptop computers, mobile phones, mri ...

Ubiquitous computing is increasingly becoming part of our lives. Various computing devices, having different sizes and capabilities, and using different software platforms are part of our working, leisure and living scenario, where mobile devices coexist and communicate with desktop and laptop computers. Because of this phenomenon, the need for reliable and efficient mechanisms to connect appli...

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...

EECS 247, Spring 1997, UC Berkeley With the increasing popularity of multimedia PC’s and particularly multimedia laptop computers, there is an increasing need for high performance audio and video in the system. This paper reports on a stereo CD-quality D/A converter that has been developed for integration with a 3D graphics controller IC to help reduce the size and power of the multimedia subsy...

This paper proposes a life cycle simulation technique to analyze multiple-objective performances of supply chains of products in a competitive market. This approach addresses structural reconfigurability of supply chains, in which OEMs (Original Equipment Manufacturers) adjust the production by changing the completion level of supplied products. A case study evaluates the structural reconfigura...

Abstract Piezoelectric transformers are mainly commercialized for a LCD back light inverter module. With regard to laptop computers, the required output power for a piezoelectric transformer is around 5 W at present, and higher power will be needed for wider displays in the near future. In addition, modules such as AC-DC adaptors or fluorescent lamps may require a higher output power of more th...