This article presents a qualitative analysis showing the dependency of effective collaborative argumentation on interpersonal relational aspects that develop during synchronous interaction. Four regulatory principles are proposed as propelling the interaction, and of these, autoregulation, or the conservative restraints within the existing relation, appears to be the dominant force. When using ...

In this work, a new external schema definition methodology for object oriented databases (OODB) that solves some of the problems of existing methodologies is presented. In particular, this new methodology avoids the need for generating derived classes that are not directly used in the defined external schema. Also, it offers a way of integrating and reusing different external schema definitions.

This paper presents a new ground penetrating radar (GPR) design approach using orthogonal frequency division multiplexing (OFDM) and compressive sensing (CS) algorithms. OFDM technique is applied to leverage GPR operating speed with multiple frequency tones transmission and receiving concurrently, and CS technique allows utilizing reduced frequency tones without compromising data reconstruction...

Modules The modular approach makes content more accessible for students without compromising meaning because modules are shorter and more focused than traditional chapters. Each module is an average of 15-20 pages in length and focuses on a specific topic, giving you the flexibility to focus on the topics you consider to be most important for your students, in the sequence that works best in yo...

This article proposes a new technique for Privacy Preserving Collaborative Filtering (PPCF) based on microaggregation, which provides accurate recommendations estimated from perturbed data whilst guaranteeing user k-anonymity. The experimental results presented in this article show the effectiveness of the proposed technique in protecting users’ privacy without compromising the quality of the r...

This article describes the extension of a memory architecture that is implemented via graphical models to include core aspects of problem solving. By extensive reuse of the general graphical mechanisms originally developed to support memory, this demonstrates how a theoretically elegant implementation level can enable increasingly broad architectures without compromising overall simplicity and ...

There is an increasing focus on having quality systems in place during the planning stages of clinical trials. Such systems require the development and implementation of standards for each step. Although this is not imposing something totally new on clinical research, a systematic approach will produce a more reliable and useful end product--high-quality data obtained without compromising the p...

Gastropexy via a percutaneous endoscopic gastrostomy has been used for fixation of the stomach to the anterior abdominal wall in patients with hiatal hernias who are poor candidates for more extensive procedures. Altered anatomic relationship of the stomach to other intra-abdominal organs and the abdominal wall may prevent safe placement endoscopically. Visualizing and manipulating the stomach ...

An effective real-time post-processing algorithm for error recovery in noise corrupted JPEG bit streams integrated into an existing remote video-surveillance system is presented. The algorithm exploits information extracted by the video-surveillance system in order to detect corrupted frames and to recover them, enhancing the performances of the system, without compromising the real-time behavi...