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To design the foundation system of waterway bridges, Load and Resistance Factor Design guidelines suggest use of deterministic scour depth prediction models. Understanding the inherent bias of deterministic scour depth prediction models will advance the development of reliability index-based foundation design regime. Four bridge scour depth prediction models were assessed in terms of two statistical parameters, termed herein mean absolute percentage error (MAPE), and conservatism, percentage of cases the predicted scour depth exceeded the measured scour depth. Live-bed laboratory and field scour depth databases were used in analyses to quantify model scatter by comparatively assessing the computed scour depth versus measured data. For live-bed laboratory data, values of MAPE ranged from 23.5% to 59.8%, whereas conservatism ranged from 28.4% to 97.8%. For live-bed field data, conservatism varied from 93.3% to 95.1%, while MAPE ranged from 205.6% to 319%. Statistical models were applied to ascertain the biasness of the four deterministic models. Accuracy and conservatism of a given model were consequently adjusted through proposed modification factors. The proposed approach allows for the selection of a suitable modification factor to satisfy a target probability of deceedance or a target conservatism. Key words: bridge scour, LRFD, probability of exceedance, live-bed, conservatism, statistical models, 1. Introduction Bridge pier scour is a complex process of interaction among flow, sediments, and structure leading to the mobilization and transport of sediments surrounding the structure. When the flow [...]

Objective: To contextualize condom use in the transgender women population utilizing the HIV syndemic framework. Methods: Studies reporting condom use frequency and syndemic factors associated with HIV risk in transgender women were systematically searched. We followed the Scoping Reviews (PRISMA-ScR) checklist. Results: Social factors have a proven relationship with using condoms and HIV among transgender women. Syndemic factors, defined as co-occurring adverse factors that interact to contribute to risk behaviors, deserve a specific analysis to develop strategies to face HIV among transgender women. Conclusions: A syndemic perspective allows to generate specific health intervention and prevention policies to protect transgender women. [ABSTRACT FROM AUTHOR]

Courses in Portuguese for Speakers of Other Languages, in particular for adult immigrants, have been steadily expanding in Portugal over the last 15 years. These programmes aim to promote educational and labour market integration, access to Portuguese nationality, and cognitive development. This paper argues that official Portuguese learning policies have mainly targeted a population with an immigrant background that fails to represent the full range of adult immigrants' needs. In particular, less educated adult immigrants' educational needs have been persistently neglected. Considering that, hitherto, approximately 9% of trainees have been adult immigrants with little or no schooling, this group has not received sufficient attention in policy measures, nor has it been fully accommodated in institutional terms. As a starting point, the paper identifies the place of adult immigrant literacy in international and national discussions. Subsequently, it discusses the main official programmes offering Portuguese for Speakers of Other Languages to adult immigrants. The data from the main programmes were backed up by fieldwork, in particular interviews carried out with teachers and public officials which highlight the main barriers and strategies impacting on this group. Finally, we argue that programmes should consider tailor-made solutions, given the counterproductive heterogeneity of classes and the arbitrariness of informal procedures.