With the rapid development of power electronics technology and its successful application, many demonstration projects medium/low-voltage DC (M-LVDC) distribution systems have been constructed. The transformer (DCT) is key equipment in M-LVDC system for interconnecting MVDC LVDC buses. In this paper, characteristics DCTs are summarized. existing topologies analyzed, relevant control strategies ...

The video quality assessment must be adapted to the human visual system, which is why researchers have performed subjective viewing experiments in order to obtain the conditions of encoding of video systems to provide the best quality to the user. The objective of this study is to assess the video quality using image features extraction without using reference video. RMSE values and processing ...

this study involved 154 anesthetized patients requiring endotracheal intubation, in whom the epiglottis was visible but not lifted, which restricted the view of the glottis. a simple stylet was used to lift the epiglottis, thus improving the view of the glottis with the glide scope®, allowing tracheal tubes to be inserted into the patients. the stylet easily resolved the difficulty of lifting t...

thin smooth walls of varying sizes. However, the male sex prompted us to exclude a more sinister cause for the lesions [2], and upon further questioning the patient had complained of right thigh pain for several weeks. Examination revealed a fixed soft tissue mass in the mid-thigh. Histology from the thigh mass biopsy and bilateral video-assisted thoracic surgery bullectomy [3] confirmed pulmon...

Advances in network technology and research in real-time packet-switched networks have prompted the emergence of internet conferencing. While audio and video conferencing tools are readily available, shared workspaces and drawing tools have been slower to emerge. We present a design for a network conferencing whiteboard that differs in notable respects from other shared workspace prototypes. We...

background: end stage renal disease negatively affects the patients’ quality of life. there are different educational methods to help these patients. this study was performed to compare the effectiveness of self-care education in two methods, face to face and video educational, on the quality of life in patients under treatment by hemodialysis in education-medical centers in urmia. methods: in ...

This study of the pragmatics of cross-cultural text messages throws light on the evolution of new hybrid forms of literacy and on the complex ways that culture is expressed and mediated in second language/ second culture contexts. An investigation was carried out into the pragmatics of apology in first-language (L1) and second-language (L2) short messaging service text messages of adult Malay s...

Biometric systems, such as face tracking and recognition, are increasingly being used as a means of security in many areas. The usability of these systems depend not only on how accurate they are in terms of detection and recognition but also on how well they withstand attacks. In this paper we developed a text-driven face-video signal from the XM2VTS database. The synthesized video can be used...

This paper presents the design and application of a system for live video transmission and remote camera control over the World Wide Web. Extensive testing of the Internet Video Server (IVS) prompted us to improve its user interface. The GlobalView extension of IVS was developed which enables the generation of panoramic images of the environment and a more intuitive control of the camera. The l...