873 resultados para Right ventricle
Resumo:
The idea of participation is becoming increasingly important in international human rights law and recent political and constitutional theory. There is an emerging international law right of minorities to participate in public life. There are many problems though with putting this right into practice. It is not enough to offer formal opportunities for representation or even to facilitate more participatory processes. This article explores how participation is more easily proclaimed than practised by examining the position of one ethnic minority, Travellers, in a liberal democracy, Ireland. While there are many formal opportunities for participation, these do not necessarily result in effective participation on a basis of equality, and may still result in decisions which fail to consider the Traveller culture and identity. Travellers still suffer from an imbalance of power in these arrangements. There are hopeful avenues to pursue in improving participation, the role of civil society and the use of a dialogue between non-governmental organisations and international organisations to put pressure on a national government, including special representation to offset the disadvantages of traditional representative democracy and emphasising the role of special parliamentary bodies; and the need to address the politics of recognition so as to strengthen the hand of disadvantaged groups such as Travellers.
Resumo:
The purpose of this article is to examine children’s attitudes regarding the right to work. The article is based on comments made by 245 15-year-old children on child employment and is supported by focus group interviews with 56 boys and 38 girls and tape-recorded interviews with 15 working pupils. One of most dominant themes to emerge from the data is children’s perception that they have a right to work. The article examines the legislation regarding child employment in Northern Ireland and the role of the state in determining the legislation. The author suggests that within this legislation, children are seen as vulnerable and in need of protection. Traditionally the protection of children in the workforce has been achieved by limiting the hours they can work and the occupations they can enter. Yet when children’s own views are taken into account, they move beyond the limits of protecting them through exclusion to suggesting frameworks whereby their protection may be achieved by empowering them within the labour market.
Resumo:
Ulva, one of the first Linnaean genera, was later circumscribed to consist of green seaweeds with distromatic blades, and Enteromorpha Link was established for tubular forms. Although several lines of evidence suggest that these generic constructs are artificial, Ulva and Enteromorpha have been maintained as separate genera. Our aims were to determine phylogenetic relationships among taxa currently attributed to Ulva, Enteromorpha, Umbraulva Bae et I.K. Lee and the monotypic genus Chloropelta C.E. Tanner, and to make any nomenclatural changes justified by our findings. Analyses of nuclear ribosomal internal transcribed spacer DNA (ITS nrDNA) (29 ingroup taxa including the type species of Ulva and Enteromorpha), the chloroplast-encoded rbcL gene (for a subset of taxa) and a combined data set were carried out. All trees had a strongly supported clade consisting of all Ulva, Enteromorpha and Chloropelta species, but Ulva and Enteromorpha were not monophyletic. The recent removal of Umbraulva olivascens (P.J.L. Dangeard) Bae et I.K. Lee from Ulva is supported, although the relationship of the segregate genus Umbraulva to Ulvaria requires further investigation. These results, combined with earlier molecular and culture data, provide strong evidence that Ulva, Enteromorpha and Chloropelta are not distinct evolutionary entities and should not be recognized as separate genera. A comparison of traits for surveyed species revealed few synapomorphies. Because Ulva is the oldest name, Enteromorpha and Chloropelta are here reduced to synonymy with Ulva, and new combinations are made where necessary.
Resumo:
The book has been described by various Irish historians as "the definitive treatment of that most peculiar institution--the Ulster Custom--and its tangled relationship with irish land and politics" (Liam Kennedy), "a brilliantly reconceptualised sketch of the Irish land question" (David Miller). "All previous discussion," according to another reviewer, "must take second place to Dowling's exhaustive survey, which draws on the whole range of surviving estate records to examine the theory and practice of tenant right across three centuries" (Sean Connolly).
Resumo:
In this article we propose a technique for dual-band Class-E power amplifier design using composite right/left-handed transmission lines, CRLH TLs. Design equations are presented and design procedures are elaborated. Because of the nonlinear phase dispersion characteristic of CRLH TLs, the single previous attempt at applying this method to dual bond Class-E amplifier design was not sufficient to simultaneously satisfy, the minimum requirement of Class-E impedances at both the fundamental and the second harmonic frequencies. This article rectifies this situation. A design example illustrating the synthesis procedure for a 0.5W-5V dual band Class-E amplifier circuit simultaneously operated at 900 MHz and 2.4 GHz is given and compared with ADS simulation.