Dependence of discharge, channel area, and flow velocity on river stage and a refutation of Manning’s equation

ABSTRACT Field data reveal how the discharge (Q), channel area (A), and average water velocity (Vavg) of natural streams functionally depend on the effective stage (h) above channel bottom. A graphical technique allows the level that corresponds to a dry channel, denoted “h0,” to be determined, permitting the dependent variables Q, A, and Vavg to all be expressed as simple functions of h, equal to hL– h0, where hL is the local stage that is typically reported relative to an arbitrary, site-specific datum. Once h0 is known, plots of log Q, log A, and log Vavg versus log h can be constructed using available data. These plots define strong, nearly linear trends for which the slopes (1) quantify the power relationships among these variables; (2) show that Vavg varies nearly linearly with h, unlike behaviors assumed in the Chezy and Manning equations; (3) distinguish the individual contributions of A and Vavg to discharge, which is their product; (4) provide quantitative means with which to compare different sites; and (5) offer new insights into the character and dynamics of natural streams.

Peer Review in Academia

In this chapter, we outline the notion of peer review and its relation to the autonomy of the academic profession and the contract between science and society. This is followed by an introduction of some key themes regarding the practices of peer review. Next, we specify some reasons to further explore different practices of peer review. Briefly, the state of the art is presented. Finally, the structure of this volume and its individual contributions are presented.

Characterization and modelling of air humidification in Fuel Cell System for transport sector

A model for the physical description of water transport through steady-state permeation and dynamic sorption within perfluoro-sulfonic acid (PFSA) membranes has been developed. A broad experimental campaign is conducted on several membranes, belonging to Aquivion class, varying both in thickness and equivalent weight (EW). The experimental data have been used to calibrate and validate water transport model and to find correlations for mass-transfer properties in low-EW PFSA membranes that describe consistently both water vapor permeation and sorption. It has been possible to identify individual contributions to mass transport resistance and to determine the optimal configuration and materials of a full-scale counter-flow membrane humidifier under a set of specific operating conditions.

Editorial: Perspectives on Nordic phonology

In this editorial, we first offer a glimpse of the scope and traditions of studying phonology in the Nordic countries and how these are mirrored in the aims of FiNo and the topics presented at its 2020 workshop. We then summarize the individual contributions to the volume, showing how they connect nicely with an overarching frame­work, which we call ‘Autosegmental Metrical Optimality Theory’.

Recurrent hydatid disease, a case report and literature review

Hydatid disease (HD) remains endemic in Australia, with estimated incidence highest in rural and indigenous populations. Its recurrence is defined by new active cysts arising after appropriate therapy, and affects anywhere between 2-25% of total cases. Available treatment options include surgical resection, percutaneous drainage, and chemotherapy. Interestingly, their individual contributions to long-term minimisation of recurrence are scarcely described in the literature. We present a unique case of a 27-year-old female with recurrent hepatic HD requiring repeat operations and long-term chemotherapy. Prevention and treatment of recurrent HD requires careful evaluation of a multitude of factors, including disease characteristics, patient attributes, physician expertise and availability of resources. Consistent long-term follow up is required to better ascertain the long-term efficacy of reported treatment modalities for preventing recurrence. Despite a growing body of research looking at treatment of HD, there remains a considerable amount of controversy regarding most effective approach for minimising and preventing its recurrence.

The Relevance of Motivations to Wrongdoing for Contributing to Climate Change

This paper makes progress towards an account of moral wrongdoing for individual contributions to collectively-caused harms and substantial risks of harm, like the harms and risks stemming from climate change. To do so, this paper argues that an agent’s motivations can be relevant to whether an agent’s contribution to a collectively-caused harm or risk is morally wrong. Specifically, this paper argues that an agent’s contribution to a collectively caused harm or risk can be wrong in virtue of her motivations even when she does not intend to contribute to the harm or risk, but rather contributes to the harm or risk as a foreseeable but unintended side-effect of her otherwise good end.

Separation of multiple motor memories through implicit and explicit processes

Acquisition of multiple motor skills without interference is a remarkable ability in daily life. During adaptation to opposing perturbations, a common paradigm to study this ability, each perturbation can be successfully learned when a contextual follow-through movement is associated with the direction of the perturbation. It is still unclear, however, to what extent this learning engages the cognitive explicit process and the implicit process. Here, we untangled the individual contributions of the explicit and implicit components while participants learned opposing visuomotor perturbations, with a second unperturbed follow-through movement. In Exp. 1 we replicated previous adaptation results and showed that follow-through movements also allow learning for opposing visuomotor rotations. For one group of participants in Exp. 2 we isolated strategic explicit learning, while for another group we isolated the implicit component. Our data showed that opposing perturbations could be fully learned by explicit strategies; but when strategy was restricted, distinct implicit processes contributed to learning. In Exp.3, we examined whether learning is influenced by the disparity between the follow-through contexts. We found that the location of follow-through targets had little effect on total learning, yet it led to more instances in which participants failed to learn the task. In Exp. 4, we explored the generalization capability to untrained targets. Participants showed near-flat generalization of the implicit and explicit processes. Overall, our results indicate that follow-through contextual cues might activate, in part, top-down cognitive factors that influence not only the dynamics of the explicit learning, but also the implicit process.

An Improved Assessment Method and Its Application to the Latest IMERG Rainfall Product in Mainland China

Quantification of uncertainties associated with satellite precipitation products is a prior requirement for their better applications in earth science studies. An improved scheme is developed in this study to decompose mean bias error (MBE) and mean square error (MSE) into three components, i.e., MBE and MSE associated hits, missed precipitation, and false alarms, respectively, which are weighted by their relative frequencies of occurrence (RFO). The trend of total MBE or MSE is then naturally decomposed into six components according to the chain rule for derivatives. Quantitative estimation of individual contributions to total MBE and MSE is finally derived. The method is applied to validation of Integrated MultisatellitE Retrievals for GPM (IMERG) in Mainland China. MBE associated with false alarms is an important driver for total MBE, while MSE associated with hits accounts for more than 85% of MSE, except in inland semi-arid area. The RFO of false alarms increases, whereas the RFO of missed precipitation decreases. Both factors lead in part to a growing trend for total MBE. Detection of precipitation should be improved in the IMERG algorithm. More specifically, the priority should be to reduce false alarms.

International Handbook on Child Participation in Family Law

This topical and timely book considers children's participation rights in the context of family law proceedings, and how their operation can be improved for the benefit of children and family justice systems globally. In doing so, it provides the pedagogical reasoning for child participation, as well as a thorough analysis of the relevant human rights instruments in this area, including the United Nations Convention on the Rights of the Child. <br><br>This comprehensive book examines the way in which private international law instruments deal with child participation in separation/divorce, parental responsibility and child abduction proceedings. In addition, the book includes individual contributions from renowned family law experts from 17 countries who describe and analyse the local laws and exercise of child participation rights in their own jurisdictions. These insightful texts include the authors' views on the improvements needed to ensure that child participation rights are fully respected and implemented in the countries under review. A detailed comparative analysis follows which helpfully pinpoints both the key commonalities and differences in these global processes. Finally, the concluding chapter draws together the different perspectives revealed across the handbook, and identifies several key issues requiring further reflection from scholars, policy makers and family justice professionals. <br><br><i>The International Handbook on Child Participation in Family Law</i> is a rich source of information and essential reading for all those working in this important and evolving field.

Incorporating the UN Convention on the Rights of the Child into National Law

The United Nations Convention on the Rights of the Child (CRC) requires States Parties to take all appropriate measures to implement the rights in the Convention. As we celebrate the 30th anniversary of the Convention's adoption, focus has shifted onto the measures being taken at national level to give effect to children's rights with specific reference to legal incorporation both direct and indirect. The way in which the CRC is given legal effect is highly contingent upon the constitutional and legal systems of individual countries and can best be understood by those writing from the specific national context. <br><br>So this book combines individual contributions that address the experience of legal incorporation in selected countries by their national experts, with comparative analysis of the international landscape from the world's leading authorities on legal implementation of the CRC. The result is an up-to-date, comparative and international analysis of the progress made around the world to incorporate the CRC, in the first comprehensive and analytical presentation of these issues. <br><br><i>Incorporating the UN Convention on the Rights of the Child into National Law</i> is a rich resource central to the work of every lawyer with an interest in the CRC or the incorporation of international legal instruments.