Wage rigidity and disinflation in emerging countries

This paper examines the consequences of rapid disinflation for downward wage rigidities in two emerging countries, Brazil and Uruguay, relying on high quality matched employer-employee administrative data. Downward nominal wage rigidities are more important in Uruguay, while wage indexation is dominant in Brazil. Two regime changes are observed during the sample period, 1995-2004: (i) in Uruguay wage indexation declines, while workers'resistance to nominal wage cuts becomes more pronounced; and (ii) in Brazil, the introduction of inflation targeting by the Central Bank in 1999 shifts the focal point of wage negotiations from changes in the minimum wage to expected inflation. These regime changes cast doubts on the notion that wage rigidity is structural in the sense of Lucas (1976).Labor Markets,Income,Economic Theory&Research,Environmental Economics&Policies,Labor Policies

Domain adaptive segmentation in volume electron microscopy imaging

In the last years, automated segmentation has become a necessary tool for volume electron microscopy (EM) imaging. So far, the best performing techniques have been largely based on fully supervised encoder-decoder CNNs, requiring a substantial amount of annotated images. Domain Adaptation (DA) aims to alleviate the annotation burden by 'adapting' the networks trained on existing groundtruth data (source domain) to work on a different (target) domain with as little additional annotation as possible. Most DA research is focused on the classification task, whereas volume EM segmentation remains rather unexplored. In this work, we extend recently proposed classification DA techniques to an encoder-decoder layout and propose a novel method that adds a reconstruction decoder to the classical encoder-decoder segmentation in order to align source and target encoder features. The method has been validated on the task of segmenting mitochondria in EM volumes. We have performed DA from brain EM images to HeLa cells and from isotropic FIB/SEM volumes to anisotropic TEM volumes. In all cases, the proposed method has outperformed the extended classification DA techniques and the finetuning baseline. An implementation of our work can be found on https://github.com/JorisRoels/domain-adaptive-segmentation

Temporal Taylor's scaling of facial electromyography and electrodermal activity in the course of emotional stimulation

High frequency psychophysiological data create a challenge for quantitative modeling based on Big Data tools since they reflect the complexity of processes taking place in human body and its responses to external events. Here we present studies of fluctuations in facial electromyography (fEMG) and electrodermal activity (EDA) massive time series and changes of such signals in the course of emotional stimulation. Zygomaticus major (ZYG, "smiling" muscle) activity, corrugator supercilii (COR, "frowning"bmuscle) activity, and phasic skin conductance (PHSC, sweating) levels of 65 participants were recorded during experiments that involved exposure to emotional stimuli (i.e., IAPS images, reading and writing messages on an artificial online discussion board). Temporal Taylor's fluctuations scaling were found when signals for various participants and during various types of emotional events were compared. Values of scaling exponents were close to 1, suggesting an external origin of system dynamics and/or strong interactions between system's basic elements (e.g., muscle fibres). Our statistical analysis shows that the scaling exponents enable identification of high valence and arousal levels in ZYG and COR signals

Does higher education research have a theory deficit? Explorations on theory work

This article was supported by the Open Access Publication Fund of Humboldt-Universität zu Berlin.Our contribution aims kick off a nuanced debate about theories and theorising in higher education research. Drawing on sociological literature that reflects on theories and theorising, we introduce the notion of ‘theory work.’ Theory work emphasises that theories are practical tools that can be used for a variety of purposes. To make different forms of engagement with theories visible, we develop in a first step three conceptual lenses that facilitate a nuanced observation of different forms of engagement with theories in higher education research: the lenses focus on (1) ranges of theories, (2) ways of engaging with theories, and (3) degrees of epistemic autonomy of theory work. In a second step, we operationalise these lenses for two thematic fields: we discuss theory work in research concerned with organisation and governance, and theory work in research on academic careers. Our contribution shows that there are both differences and similarities in theory work across thematic fields with in higher education research. Across these differences and similarities our conceptual lenses reveal a variety of forms of theories and theory work in higher education research. We conclude by discussing several benefits a conceptual toolkit on theory work can have for higher education research more generally.Peer Reviewe

q-neighbor Ising model on a polarized network

In this paper, we have examined the interplay between the lobby size $q$ in the $q$-neighbor Ising model of opinion formation [Phys. Rev. E 92, 052105] and the level of overlap $v$ of two fully connected graphs. Results suggest that for each lobby size $q \ge 3$ there exists a specific level of overlap $v^*$ which destroys initially polarized clusters of opinions. By performing Monte-Carlo simulations, backed by an analytical approach we show that the dependence of the $v^*$ on the lobby size $q$ is far from trivial in the absence of temperature $T \rightarrow 0$, showing a clear maximum that additionally depends on the parity of $q$. On the other hand, the temperature is a destructive factor, its increase leads to the earlier collapse of polarized clusters but additionally brings a substantial decrease in the level of polarization

Does higher education research have a theory deficit? Explorations on theory work

Our contribution aims kick off a nuanced debate about theories and theorising in higher education research. Drawing on sociological literature that reflects on theories and theorising, we introduce the notion of ‘theory work.’ Theory work emphasises that theories are practical tools that can be used for a variety of purposes. To make different forms of engagement with theories visible, we develop in a first step three conceptual lenses that facilitate a nuanced observation of different forms of engagement with theories in higher education research: the lenses focus on (1) ranges of theories, (2) ways of engaging with theories, and (3) degrees of epistemic autonomy of theory work. In a second step, we operationalise these lenses for two thematic fields: we discuss theory work in research concerned with organisation and governance, and theory work in research on academic careers. Our contribution shows that there are both differences and similarities in theory work across thematic fields with in higher education research. Across these differences and similarities our conceptual lenses reveal a variety of forms of theories and theory work in higher education research. We conclude by discussing several benefits a conceptual toolkit on theory work can have for higher education research more generally

(A)synchronous Communication about TV Series on Social Media: A Multi-Method Investigation of Reddit Discussions

Audiences’ TV series entertainment experiences are increasingly shaped not only by the events on the ‘first screen’ but also by discussions on social media. While an extensive body of research has examined practices of ‘second screening,’ especially on Twitter, online discussions before and after the live broadcast and on other platforms have received less attention. On Reddit—one of the most important platforms for Social TV—discussions often take place in temporally structured threads that allow users to discuss an episode before (pre-premiere thread), during (live premiere thread), and after (post-premiere thread) it airs. In this project, we examine whether these spaces mainly indicate temporal preferences among users or are associated with different usage practices and motives. To do so, we conducted two case studies of the Reddit community r/gameofthrones: a survey about usage motives (n = 417) and an automated content analysis of approximately 1.2 million comments left on the episode discussion threads in which we examined thread use over time, interactions between users, and discussion content. The results revealed differing usage motives and practices for the three thread types, illustrating the distinct function that these communication spaces fulfil for users

Executive Summary: Evaluation of the MacArthur Foundation's Human Rights and International Justice Grantmaking in Nigeria 2000-2012

The MacArthur Foundation commissioned Itad to conduct an evaluation of the Foundation's Human Rights and International Justice (HRIJ) grant?making program in Nigeria between 2000 and 2012. During this period, the Foundation supported 102 HRIJ projects with an end?date in 2000 or later, for a total grant amount of US$23,945,010. The projects broadly fell within the following thematic categories:- Accountability of democratic institutions, including the police- Justice: legal and judicial reform, including international justice standards - Protection and promotion of human rightsThe evaluation was commissioned to seek answers to the following questions: - Approach and strategy: o What has changed in the wider Nigerian HRIJ landscape in Nigeria since 2000? o What was the Foundation's HRIJ grantmaking strategy in Nigeria over this time? o How has the Foundation responded to change in the wider environment? o How has the implementation of grants contributed to strategic aims? - Impact: o What have been the main results of the Foundation's investments? o What was the Foundation's primary contribution to Nigeria HRIJ issues? o What lessons can be drawn for future HRIJ grantmaking in Nigeria

Effective Regional Energy Policy Cooperation in South East Europe: A Proposal. CEPS Background Briefing Paper, 2 July 2015

Key Points. The implementation of regional energy policy cooperation initiatives is a priority of both the Energy Union and the so-called 2030 Energy and Climate Framework. The Energy Union proposal has singled out south east Europe as one area in which to act. This report identifies the seven key elements that need to be addressed to bring existing and planned regional energy policy cooperation initiatives in south east Europe to life: i) a sound geographical definition, ii) a governance structure, iii) voluntary participation, iv) exchange of information and best practice, v) the development of an external dimension, vi) regional infrastructure planning and development and vii) streamlining the financing instruments across the region. The study finds that significant progress has been made in many areas, and makes concrete proposals to unlock the full potential of coordination in those areas where there is limited progress. These proposals have been tested in discussions in the region