thanks to the development of the concept of metadiscourse, it is now widely acknowledged that academic/scientific writing is not only concerned with communicating purely propositional meanings: what is communicated through academic/scientific communication is seen to be intertwined with the negotiation of social and interpersonal meanings. while a large number of so called metadiscoursal resour...

Thanks to the development of the concept of metadiscourse, it is now widely acknowledged that academic/scientific writing is not only concerned with communicating purely propositional meanings: what is communicated through academic/scientific communication is seen to be intertwined with the negotiation of social and interpersonal meanings. While a large number of so called metadiscoursal resour...

In this work, we consider the goal of scheduling the maximum number of voice calls in a TDMA-based multi-radio, multi-channel mesh network. One of main challenges to achieve this goal is the difficulty in providing strict (packet-level) delay guarantees for voice traffic in capacity limited multi-hop wireless networks. In this respect, we propose DelayCheck, an online centralized scheduling and...

In this work, we consider the goal of scheduling the maximum number of voice calls in a TDMA-based multiradio, multi-channel mesh network. One of main challenges to achieve this goal is the difficulty in providing strict (packetlevel) delay guarantees for voice traffic in capacity limited multi-hop wireless networks. In this respect, we propose DelayCheck, an online centralized scheduling and c...

Numerous voice, still image, audio, and video compression standards have been developed over the last 25 years, and significant advances in the state of the art have been achieved. However, in the more than 50 years since Shannon’s seminal 1959 paper, no rate distortion bounds for voice and video have been forthcoming. In this volume, we present the first rate distortion bounds for voice and vi...

In this paper new, lightweight security and control protocol for Voice over Internet Protocol (VoIP) service is presented. It is the alternative for the IETF’s (Internet Engineering Task Force) RTCP (Real-Time Control Protocol) for real-time application’s traffic. Additionally this solution offers authentication and integrity of voice send and it is capable of exchanging and verifying QoS and s...

In this paper a new way of exchanging information for Voice over Internet Protocol (VoIP) service is presented. With use of digital watermarking and steganography techniques we achieve a covert channel which can be used for different purposes e.g. to improve IP Telephony security or to alternate existing protocols like RTCP (Real-Time Control Protocol). Main advantage of this solution is that i...

The present study explored the intensity level of authorial voice in relation to the quality of argumentative writing. 42 undergraduate learners of English as a foreign language (36 girls and 6 boys) spent 45 minutes to individually complete in-class position-taking writing tasks for three weeks. Their overall academic writing quality scores assigned based on portfolio assessment were studied i...

For Internet Telephony to be a viable alternative to the Public Switch Telephone Network (PSTN), efficient and high quality communications are required. This paper proposes an optimization algorithm that selects parameters like coding scheme, packet loss bound, and maximum link utilization level in a Voice over IP (VoIP) network. The goal is to deliver guaranteed Quality of Service (for voice) ...