The effect of human-body shadowing on indoor UWB TOA-based ranging systems

Because of its superior time resolution, ultra-wide bandwidth (UWB) transmission can be a highly accurate technique for ranging in indoor localization systems. Nevertheless, the presence of obstructions may deteriorate the ranging performance of the system. Indoor environments are often densely populated with people. However, t h e effect of the human body presence has been scarcely investigated so far within the UWB ranging context. In this work, we investigate this effect by conducting UWB measurements and analyzing the ranging performance of the system. Two measurement campaigns were performed in the 3-5.5 GHz band, in an anechoic chamber and a laboratory environment. The range estimates were obtained by employing the threshold-based first peak detection technique. Analysis results revealed that the human body significantly attenuates the direct-path signal component. On the other hand, in this study it does not introduce a significant range error since the length difference between the diffracted paths around the body and the direct-path is less than the spatial resolution of the measurement setup. © 2012 IEEE.

Syntactic Structures in Irish-Language Proverbs

In recent years, linguistic studies into the concept of ‘proverbiality’ have provided paremiologists with a more comprehensive understanding of the form and function of proverbial markers in a wide range of languages. Unfortunately, the Irish language has, until now, not featured in any of these linguistic analyses. This paper seeks to re-address this imbalance and to bring the unique structure and style of Irish-language proverbs to the attention of the international community of paremiologistsfor the first time. This research study applies the general methodology adopted by such scholars as Mahgoub (1948), Silverman-Weinreich (1978) and Arora (1984), toa corpus sample of Irish proverbs and provides both a qualitative and quantitative account of the most salient syntactic structures contained in Irish-language proverbs. Proverbial patterns as well as the collocation of proverbial markers are also discussed.

Interpretations of national identity in post-conflict Northern Ireland: A comparison of different school settings

It is generally accepted that education has a significant role to play in anysociety transitioning from conflict to a more peaceful dispensation. Indeed,some have argued that the education system potentially represents the singlemost effective agent of social change with the capacity to bridge ethnicdivision in conflict affected countries. Despite the potential, educationalpolicy-makers grapple with the dilemma as to precisely how school systemscan best facilitate this agenda. This paper thus attempts to shed lightupon the dilemma by exploring pupil identity and associated intergroupattitudes across various school types in Northern Ireland. Five schools wereselected for the study with each one representing a particular sector withinthe Northern Irish education system (maintained grammar, maintainedsecondary, controlled grammar, controlled secondary, integrated). This led toa total sample size of 265 pupils. The main findings show that children acrossseparate Catholic, separate Protestant and mixed Catholic and Protestanteducational contexts construct and interpret identity differently. At thesame time, our data suggest that no one school setting has supremacy inpromoting social cohesion. The implications of these findings are discussed.