Recording the variation of joint angles as a feedback to the control unit is frequent in articulated arms. In this paper, magnetic sensor AS5045, which is a contactless encoder, is employed to measure joint angles of 6R robot and the performance of that is examined. The sensor has a low volume, two digital outputs and provides a high resolution measurement for users; furthermore its zero positi...

The DSpaceTM project of the MIT Libraries and the Hewlett Packard Laboratories1 has built an institutional repository system for digital research material. This paper will describe the rationale for institutional repositories, the DSpace system, and its implementation at MIT. Also described are the plans for making DSpace open source in an effort to provide a useful test bed and a platform for ...

Personalized healthcare is a challenge because supports the sustainability of care. Internet of Things is a paradigm promising to manage the digital identity, so the personalization of care services. Different equipment is used in extra-wall healthcare and assistive services, requiring different sorts of objects to communicate and to make the ubiquitous system-of-system. Extended entities and m...

This paper focuses on the contribution of digital government (DGOV) to Whistleblowing (WB). While considerable efforts have been devoted to DGOV and WB separately, research work at the intersection of these two domains is very scarce; hence and a systematic DGOV for WB (DGOV4WB) research framework has yet to emerge. This paper aims to identify the potential issues in whistleblowing and explore ...

A digital signal processor (DSP) based voice communication system for divers with a 2400 bitls transmission rate is described. Each speech signal frame is analysed using linear predictive coding (LPC) and the essential parameters such as amplitude, pitch period and digital filter coefficients are extracted. These parameters are transmitted through a water channel at a rate of 2400 bitls by empl...

– The software-defined-radio concept received increasing attention due to necessity of multi-mode/multi-system capable terminals for next generation communication systems. This paper summarizes the requirements of a multi-mode compliant digital-front-end (DFE) and describes concepts for cellular terminal implementations on silicon. A partitioning is proposed wherein functionality, normally loca...

Due to recent advances in computer technology the integration of multimedia data with computing is becoming feasible. Such integration will allow for scenarios in which computer systems support collab-orative conferencing. We have developed a testbed for multimedia teleconferencing that is used to study experimental protocols that can manage and organize multiparty conferences and transmit digi...

As the carrier frequency goes into terahertz band, phase noise of signal source has increasing impacts on performance communication system. Considering a 16QAM high-order digital modulation system (DMTCS), by comparing influence two kinds local oscillator sources with different characteristics bit error rate (BER) based theoretical analysis and experimental research, it is found that near-end g...

Abstract A new multicarrier multi-rate digital demultiplexer system structure based on MF-TDMA(Multi-Frequency Time Division Multiple Access) in a wideband satellite communication is described. Compared with the traditional tree method, uses half-band filter instead of quadrature mirror filter, which has three advantages: 1) It fully avoids shortcomings such as confusion distortion and amplitud...