The ecological impact of synthetic organic compounds on esturine ecosystems /

Subject Profile Index: p.169-353.

Women, computing and the 'ideal worker': A comparison of professional occupations

In this paper we use recent census data supplemented with case study evidence to investigate the extent to which professional computing occupations in Australia are constructed around the notion of an ‘ideal’ worker. Census data are used to compare computer professionals with other selected professional occupational groups, illustrating different models of accommodating (or not accommodating) workers who do not fit the ideal model. The computer professionals group is shown to be distinctive in combining low but consistent levels of female representation across age groups, average rates of parenthood and minimal provisions for working-time flexibility. One strategy employed by women in this environment is selection of relatively routine technical roles over more time intensive consultancy based work.

QUALIDADE DE VIDA E BEM-ESTAR SUBJETIVO DE ESTUDANTES UNIVERSITÁRIOS

Considerando a expansão do ensino superior e do aumento do número de estudantes universitários, aumentam-se as demandas e a necessidade de se promover um desenvolvimento integral para o estudante. Diante disso, esse estudo teve como objetivo avaliar a qualidade de vida e o bem-estar subjetivo de estudantes universitários. Trata-se de um estudo descritivo, quantitativo e de delineamento transversal, no qual foram utilizados o Instrumento de Avaliação de Qualidade de Vida (WHOQOL-Bref) da Organização Mundial da Saúde - OMS, a Escala de Bem-Estar Subjetivo - EBES e um Questionário de Caracterização Sociodemográfica. Participaram desse estudo 257 estudantes de ambos os gêneros e de seis cursos de graduação de uma universidade federal. A análise dos dados da qualidade de vida mostrou que o domínio com maior média (15,23) foi o de relações sociais e o pior (12,87) foi o de meio ambiente. Quando comparado a outros estudos, esses estudantes, em geral, apresentaram pior qualidade de vida. Quanto aos fatores da Escala de Bem-Estar Subjetivo foi encontrado maior média (3,80) na frequência de emoções negativas em comparação com as emoções positivas (3,27) e com a satisfação com a vida (3,57). A maioria dos estudantes, 185 (72%) apresentaram bem-estar subjetivo moderado. Através desses resultados, faz-se necessário pensar em ações de prevenção e promoção da saúde com o objetivo de amenizar ou eliminar os aspectos negativos encontrados e de fortalecer os positivos. Os resultados desse estudo apontam para a necessidade de uma ampliação das políticas de assistência ao estudante, com intervenções psicossociais que objetivem melhorar os índices de bem-estar subjetivo e de qualidade de vida.

Design and fabrication of micro-structured waveguides in lithium niobate

We review our recent work on the numerical design and optimisation of buried, micro-structured waveguides (WGs) that can be formed in a lithium niobate (LiNbO3) crystal by the method of direct femtosecond laser inscription. We also report on the possibility of fabricating such WGs using a high-repetition-rate, chirped-pulse oscillator system. Refractive index contrasts as high as -0.0127 have been achieved for individual modification tracks. The results pave the way for developing micro-structured WGs with low-loss operation across a wide spectral range, extending into the mid-infrared region up to the end of the transparency range of the host material. © 2014 IEEE.

Challenges of developing non-linear devices to achieve the linear Shannon limit

To achieve the Shannon Capacity Limit, we need to develop practical, effective and deployable non-linear devices to invert the non-linear effects of the transmission line. In this work, we will summarise the progress we are making to realise these, specifically looking at optical phase conjugation and phase regenerators as methods to improve non-linear tolerances. © 2014 IEEE.

Real time 100 Gbit/s electrical Nyquist WDM transmitter

We demonstrate the use of passive electrical filters to produce high quality spectrally-shaped 29 Gbaud WDM signals with a 20 dB bandwidth of 32 GHz, a roll-off of 4.8 dB/GHz and a required OSNR of 12.1 dB. © 2014 IEEE.

Nyquist-WDM PDM-QPSK transmission over SMF-28 fibre using URFL amplification

Nyquist-WDM PDM-QPSK transmission over standard SMF-28 fibre with novel distributed URFL amplification is reported for the first time. Transmission over 6157 km in a recirculating loop, and 320 km in an unrepeatered link without a ROPA were demonstrated. © 2014 IEEE.

Transmission comparison of ultra-long Raman fibre laser based amplification with first and dual order Raman amplification using 10×118 Gbit/s DP-QPSK

Experimental investigations of 10×118 Gbit/s DP-QPSK WDM transmission using three types of distributed Raman amplification techniques are presented. Novel ultra-long Raman fibre laser based amplification with second order counter-propagated pumping is compared with conventional first order and dual order counter-pumped Raman amplification. We demonstrate that URFL based amplification can extend the transmission reach up to a distance of 7520 km in comparison with 5010 km and 6180 km using first order and dual order Raman amplification respectively. © 2014 IEEE.

Enabling transparent technologies for the development of highly granular flexible optical cross-connects

Flexible optical networking is identified today as the solution that offers smooth system upgradability towards Tb/s capacities and optimized use of network resources. However, in order to fully exploit the potentials of flexible spectrum allocation and networking, the development of a flexible switching node is required capable to adaptively add, drop and switch tributaries with variable bandwidth characteristics from/to ultra-high capacity wavelength channels at the lowest switching granularity. This paper presents the main concept and technology solutions envisioned by the EU funded project FOX-C, which targets the design, development and evaluation of the first functional system prototype of flexible add-drop and switching cross-connects. The key developments enable ultra-fine switching granularity at the optical subcarrier level, providing end-to-end routing of any tributary channel with flexible bandwidth down to 10Gb/s (or even lower) carried over wavelength superchannels, each with an aggregated capacity beyond 1Tb/s. © 2014 IEEE.