bluuebunny/crossref_metadata_2025_split huggingface dataset:
The motivational basis of constituency work: how intrinsic and extrinsic motivations interact
Authors: Giger Nathalie , Lanz Simon , de Vries Catherine 
Published: May 2019

AbstractBehavioral economists and social psychologists have shown that extrinsic motivations can crowd out intrinsic motivations to act. This study examines this crowding out effect in the context of legislative behavior. By exploiting the federal nature of Swiss elections, we examine if response rates to requests of voters residing inside or outside a candidate's district vary based on the electoral competition candidate legislators face. We report two main findings. First, we find a high response rate among Swiss candidates (66 percent) which remains high for voters who reside outside a candidate's district (59 percent) suggesting that intrinsic motivations are a key driver of constituency effort. Second, the response to voters who reside inside a candidate's district is more pronounced for candidates confronted with a high degree of electoral competition. This suggests that extrinsic motivations are important for constituency work, but at the same time their presence might crowd out intrinsic motivations. This evidence suggests that the relationship between electoral competition and responsiveness might be less straightforward than assumed.
Bio- and lithostratigraphy of lower Pleistocene marine successions in western Emilia (Italy) and their implications for the first occurrence of Arctica islandica in the Mediterranean Sea
Authors: Crippa Gaia , Azzarone Michele , Bottini Cinzia , Crespi Stefania , Felletti Fabrizio , Marini Mattia , Petrizzo Maria Rose , Scarponi Daniele , Raffi Sergio , Raineri Gianluca 
Published: May 2019

AbstractThe Arda and Stirone marine successions (Italy) represent key sections for the early Pleistocene; they were deposited continuously within a frame of climate change, recording the Calabrian cooling as testified by the occurrence of the “northern guests,” such as the bivalve Arctica islandica. In addition, although the first occurrence of A. islandica in the Mediterranean Sea was used as the main criterion to mark the former Pliocene-Pleistocene boundary, the age of this bioevent was never well constrained. Here, we describe the Stirone depositional environment and constrain for the first time the section age using calcareous nannofossil and foraminifera biostratigraphy. We also correlate the Arda and Stirone sections using complementary biostratigraphic and magnetostratigraphic data. Our results indicate that A. islandica first occurred in both the successions slightly below the top of the CNPL7 biozone (dated at 1.71 Ma). Comparisons with other lower Pleistocene Mediterranean marine successions indicate that the stratigraphically lowest level where A. islandica first occurred in the Mediterranean Sea is in the Arda and Stirone sections; these environments satisfied the ecological requirements for the establishment and the proliferation of the species, which only subsequently (late Calabrian) has been retrieved in southern Italy and other areas of the Mediterranean Sea.
Two twentieth-centuryMLH= 7.5 earthquakes recorded in annually laminated lake sediments from Sary Chelek, western Tian Shan, Kyrgyzstan
Authors: Lauterbach Stefan , Mingram Jens , Schettler Georg , Orunbaev Sagynbek 
Published: May 2019

AbstractCentral Asia is highly vulnerable to large earthquakes, yet existing records of past seismic activity in this area are still insufficient to reliably assess regional earthquake hazard on longer timescales. Within this study, the sediments of Sary Chelek, a mountain lake in the western Kyrgyz Tian Shan, were investigated to explore its potential as a natural paleoseismic archive. The lacustrine deposits are characterized by a succession of annually laminated (varved) sediments overlying event deposits that consist of large-scale turbidites and distorted lake sediments, similar to earthquake-related deposits described from other lake sediment records. Microscopic sediment analysis furthermore revealed distorted varves in the laminated sequence that closely resemble earthquake-related soft-sediment deformation structures. Varve counting and radiometric dating determine the formation of the distorted varves and the emplacement of the large-scale event deposits to the early 1990s and mid-1940s, respectively. This is in good temporal agreement with the occurrence of two large earthquakes that struck western Kyrgyzstan in AD 1992 and AD 1946. These results and particularly the precise age control of the Sary Chelek sediment record highlight its potential for establishing a long and precisely dated record of regional earthquake activity.
Identifying the 993–994 CE Miyake Event in the Oldest Dated Living Tree in Europe
Authors: Quarta Gianluca , Di Filippo Alfredo , Calcagnile Lucio , D’Elia Marisa , Biondi Franco , Saba Emanuele Presutti , Baliva Michele , De Vivo Giuseppe , Schettino Aldo , Piovesan Gianluca 
Published: May 2019

ABSTRACTCombined dendrochronology and accelerator mass spectrometry radiocarbon (AMS 14C) dating analyses were used in order to date an old living tree named Italus, growing in the Pollino massif in Southern Italy. Wiggle match AMS 14C dating analysis was performed on a 320-yr-long floating chronology obtained by cross-dating four wood cores extracted from the exposed roots of the tree. Following this approach, an age for the tree of ≈1230 yr was estimated. This age makes Italus the oldest living tree in Europe. High-resolution 14C dating analyses performed on single rings extracted from the tree stem allowed us to identify the 993–994 CE large excursion in atmospheric 14C concentration (Miyake event) revealing for the first time its presence in the Mediterranean basin.
Mobile people, phones and photography: Somali visual practices in Nairobi's Eastleigh estate
Authors: Carrier Neil 
Published: May 2019

AbstractThe coming of the mobile phone camera has transformed photography. This article explores this transformation through a case study of photography in Eastleigh, a Nairobi estate that is home to many thousand Somalis, both Kenyan Somalis and refugees from Somalia. It is a trade hub for East Africa, a social and economic hub for the global Somali diaspora, and a place regarded as suspect in a country where Somalis have long been marginalized. This article examines Eastleigh as photographic subject and setting, comparing the ubiquity of mobile phone photography there with seldom-practised more traditional forms of photography that are often treated with suspicion in an estate subject to securitized government policy and negative press. It shows how mobile phone photography helps people in the estate communicate visually with the wider Somali diaspora through social media, and how it helps people sell their goods, using as a case study a particular archive of images sent through WhatsApp to the author by Mohaa, a friend of his and a trader in the estate. The article also adds a political dimension to recent anthropological theorizing on mobile photography, showing how, in Eastleigh, Somalis have used photography and social media to take control of the way in which the estate is represented visually, and to demand from the state better services and better treatment.
The anxiety of blowing: experiences of breath and brass instruments in Benin
Authors: Copeland Lyndsey 
Published: May 2019

AbstractWithin amateur musical circles in Benin, one is told that if a male blows too hard into a brass instrument his testicles might swell up, fall off, or even run away. Concerned parents warn their children against ‘blowing’ brass instruments, telling stories of inguinal hernias and infertility, and many maintain that male brass players must take preventative measures. Accompanying this unease about blowing out is a complementary concern with breathing in, and the possible inhalation of micro-organisms or poison through the mouth. Engaging with this anxiety of blowing, this article takes seriously my interlocutors’ concern with the consequences of playing brass instruments on their bodies. My main argument is that understandings of the precarious nature of breath are at the core of musicians’ experiences of anxiety. My exploration of the relation between breath, anxiety and the body supports a common phenomenology of breathing across cultures, and serves to advance breath as an important site of meaning making.
Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum
Authors: Li Xinzhou , Liu Xiaodong , Zhou Haibo 
Published: May 2019

AbstractThe dust cycle plays an important role in the long-term evolution of the climate and environment. In this paper, an improved climate model including aerosol processes was used to carry out a set of sensitivity experiments and comparative analyses of the effects of high-latitude ice-sheet extent and abnormal dust erosion, as well as Earth’s orbital parameters and atmospheric greenhouse gas content, on dust activities during the last glacial maximum. The comparative analysis found that incorporating the abnormal surface erosion factor alone could increase dust emissions by 2.77-fold and 3.77-fold of the present-day global and Asian dust emissions, respectively. The high-latitude ice-sheet factor caused global dust emissions to increase by 1.25-fold that of the present day. Sensitivity experiments showed that increased surface erosion in Asia during the last glacial maximum made the greatest contribution to the increased dust emissions in Asia, followed by the high-latitude ice-sheet factor, while the contributions of the greenhouse gas content and orbital parameters were relatively weak. Strong dust emissions during the glacial period were therefore not only dependent on the development of the high-latitude ice sheets but were strongly associated with the underlying surface characteristics of local dust source regions.
The African Charter on Democracy, Elections and Governance: Past, Present and Future
Authors: Wiebusch Micha , Aniekwe Chika Charles , Oette Lutz , Vandeginste Stef 
Published: May 2019

AbstractThis article traces a genealogy of the African Charter on Democracy, Elections and Governance (ACDEG) and examines the charter's overall implementation. While there has always been a struggle between competing views of how to ensure more or less continental accountability for norms related to democratic governance in Africa, enforcement by the African Union (AU) has definitively become more robust since the ACDEG's adoption. The article argues that this development is observable in three trends: continental legalization, technocratization and judicialization of politics. It evaluates the growth of normative commitments in the field of democracy, elections and governance and their increasing consolidation into binding legal treaties; explores the increasing reliance on AU technical assistance in the implementation and interpretation of these instruments; and assesses the expanding role of continental and regional judicial bodies in enforcing commitments to democracy. Building upon a better understanding of these trends, the article identifies key contextual factors that will shape the ACDEG's future implementation.
New data on the nervous system ofCercaria parvicaudataStunkard & Shaw, 1931 (Trematoda: Renicolidae): revisiting old hypotheses
Authors: Denisova S.A. , Shchenkov S.V. 
Published: May 2019

AbstractData on the interposition of the immunoreactive nerve cords inCercaria parvicaudataStunkard & Shaw, 1931 (Trematoda: Renicolidae) and its chaetotaxy were obtained. The nervous system ofC. parvicaudatawas described using immunostaining of 5-hydroxytryptamine and FMRFamide immunoreactive nerve elements. The morphology and distribution of sensory receptors were analysed using scanning electron microscopy and the silver nitrate impregnation technique. Our integrated approach to the study of the nervous system revealed a clear colocalization of surface papillae with nerve cords and commissures inC. parvicaudata.The structure of the nervous system inC. parvicaudatadiffers partly from the classical model that defines the entire nomenclature of chaetotaxy.
Colonies as dynamic systems: reconstructing the life history of Cribrilina annulata (Bryozoa) on two algal substrates
Authors: Nekliudova Uliana A. , Shunkina Ksenia V. , Grishankov Alexey V. , Varfolomeeva Marina A. , Granovitch Andrey I. , Ostrovsky Andrew N. 
Published: May 2019

AbstractQuantifying interconnected performances of the modules in a colonial organism (feeding, sexual reproduction, rejuvenation, dormancy) into an integral picture enables studying functional dynamics and resource allocation at different levels – from module to population. Testing this approach on the common boreal-Arctic bryozoanCribrilina annulatain the White Sea, we describe its life history, comparing colonies on two algal substrates with contrasting size and lifespan. Colonies living on kelps were much larger and had a higher proportion of dormant zooids, whereas the percentage of reproducing, feeding and rejuvenating zooids was higher in colonies on red algae (with the colonies also exhibiting longer reproductive period). Colony lifespan was dependent both on substrate type and on time of colony establishment, lasting from 4–5 to up to 17 months on kelps and 14–18 months on red algae. During the reproductive season (May–September) theC. annulatapopulation consisted of colonies of three cohorts on both substrata: overwintered and two summer generations that behaved differently. Whereas overwintered and summer colonies established in June–early August produced larvae, most of the colonies established after mid-summer were preparing for hibernation and postponed reproduction until next spring. Moreover, young reproducing colonies formed brooding hermaphrodite zooids of ordinary size, whereas overwintered colonies budded smaller-sized basal and frontal (dwarf) hermaphrodites. Finally, overall zooidal performance in co-existing colonies of the overwintered and young generations was different on kelps, but similar on red algae. Altogether our findings indicate that the life histories of colonial epibionts are much more complex and evolutionarily flexible than generally acknowledged.
Pause behavior within reformulations and the proficiency level of second language learners of English
Authors: Williams Simon A. , Korko Malgorzata 
Published: May 2019

AbstractThis research reports on a quantitative analysis of the combination of two types of disfluency, reformulations and pauses, in the speech of lower intermediate and advanced speakers of English as a second language (L2). The present study distinguishes between corrections and false starts within the category of reformulations as well as between silent and filled pauses. It focuses on the extent to which pause behavior within reformulations varies according to the stage of L2 development and the type of reformulation used. An analysis was made of 56 L2 speakers’ 2-min monologues. The results showed that lower intermediate and advanced speakers differed on the frequency of silent pauses inserted in corrections but not on their frequency in false starts. This suggests that false starts depend less on proficiency level, and may reflect temporary problems with conceptual encoding or extralinguistic factors that contribute to the efficacy of L2 production rather than difficulties with linguistic processing per se. The frequency of silent pauses rather than silent pause duration or the frequency and duration of filled pauses appeared to be the only marker to differentiate between false starts and corrections across the two proficiency groups.
A cat-and-Maus game: the politics of truth and reconciliation in post-conflict comics
Authors: Redwood Henry , Wedderburn Alister 
Published: May 2019

AbstractSeveral scholars have raised concerns that the institutional mechanisms through which transitional justice is commonly promoted in post-conflict societies can alienate affected populations. Practitioners have looked to bridge this gap by developing ‘outreach’ programmes, in some instances commissioning comic books in order to communicate their findings to the people they seek to serve. In this article, we interrogate the ways in which post-conflict comics produce meaning about truth, reconciliation, and the possibilities of peace, focusing in particular on a comic strip published in 2005 as part of the Sierra Leone Truth and Reconciliation Commission Report into the causes and crimes of the 1991–2002 Civil War. Aimed at Sierra Leonean teenagers, the Report tells the story of ‘Sierrarat’, a peaceful nation of rats whose idyllic lifestyle is disrupted by an invasion of cats. Although the Report displays striking formal similarities with Art Spiegelman's Maus (a text also intimately concerned with reconciliation, in its own way), it does so to very different ends. The article brings these two texts into dialogue in order to explore the aesthetic politics of truth and reconciliation, and to ask what role popular visual media like comics can play in their practice and (re)conceptualisation.
Transformation of LQR Weights for Discretization Invariant Performance of PI/PID Dominant Pole Placement Controllers
Authors: Halder Kaushik , Das Saptarshi , Gupta Amitava 
Published: May 2019

SummaryLinear quadratic regulator (LQR), a popular technique for designing optimal state feedback controller, is used to derive a mapping between continuous and discrete time inverse optimal equivalence of proportional integral derivative (PID) control problem via dominant pole placement. The aim is to derive transformation of the LQR weighting matrix for fixed weighting factor, using the discrete algebraic Riccati equation (DARE) to design a discrete time optimal PID controller producing similar time response to its continuous time counterpart. Continuous time LQR-based PID controller can be transformed to discrete time by establishing a relation between the respective LQR weighting matrices that will produce similar closed loop response, independent of the chosen sampling time. Simulation examples of first/second order and first-order integrating processes exhibiting stable/unstable and marginally stable open loop dynamics are provided, using the transformation of LQR weights. Time responses for set-point and disturbance inputs are compared for different sampling times as fraction of the desired closed loop time constant.
Climatic drivers of dipterocarp mass-flowering in South-East Asia
Authors: Chechina Mariya , Hamann Andreas 
Published: May 2019

AbstractDipterocarpaceae, a dominant family of trees in South-East Asian tropical forests, are remarkable in that they exhibit supra-annual mass-flowering events. The flowering patterns are related to the El Niño Southern Oscillation, but the mechanism that precipitates mass-flowering is still debated. Here, we test if a cumulative-trigger model that tracks resource availability, specifically light, may better explain dipterocarp phenology than a direct-environmental-trigger mechanism. Using 11 flowering time series with an average length of 29 y and variety of candidate predictor variables (precipitation, cloud cover, minimum temperature and El Niño indices) we could not find a plausible direct-environmental-trigger (median AUCs across regions from 0.53 to 0.57 indicating near random predictions). The cumulative-trigger model based on El Niño indices showed better predictive results (AUC 0.67), which could further be improved by resetting the resource at known flowering events (AUC 0.76). Additional support for a cumulative-trigger model comes from the observation that regional differences in the time of year of peak flowering correspond to where El Niño effects are strongest. We conclude that cumulative resource tracking is an evolutionary plausible trigger mechanism that has other primary evolutionary advantages, such as predator satiation.
Obstacles and opportunities: labour emigration to the ‘British World’ in the nineteenth century
Authors: Harper Marjory 
Published: May 2019

AbstractLabour emigrants in the nineteenth century had ever-increasing access to a global employment market. Many of those who left Great Britain looked beyond Europe, to the British Empire and the United States. They took advantage of improvements in transportation, and followed a wide variety of occupations. Decisions to emigrate were often shaped by their involvement in trade unions and were based on concerns about living standards and working conditions. This study considers a selection of globetrotting British settlers and sojourners who went to Canada, the United States and Australia between 1815 and the 1880s. The article analyses the historiography of labour migration; carries out an empirical study constructed around four pieces of analytical scaffolding; and closes by identifying recurring threads in the multi-hued tapestry of labour emigration, highlighting how concerns and traditions about recruitment, wages and working conditions, which had emerged in the nineteenth century, created legacies that persisted into the period after the First World War.
Social vulnerability, social structures and household grain shortages in sixteenth-century inland Flanders
Authors: Van Onacker Eline 
Published: May 2019

Abstract‘Vulnerability’ and ‘resilience’ have recently become hot topics in historiography. The main focus is on systemic vulnerability: the reasons why certain societies were better able to overcome crisis. In this article I want to address another type of vulnerability – inspired by the insights of Wisner and Blaikie: social vulnerability, and the differentiated impact of crisis on different social groups. Based on a unique corpus of sources – the grain censuses drafted during the grain crisis of 1556/57 – and a reconstruction of household budgets, I will reconstruct vulnerable groups, the root causes behind their vulnerability, and their coping mechanisms. By doing this I will show how systemic resilience could go hand-in-hand with vulnerable people, thus adding more depth to a growing research strand.
Predicting Progression to Parkinson’s Disease Dementia Using Multivariate Normative Comparisons
Authors: Agelink van Rentergem J.A. , de Vent N.R. , Huizenga H.M. , Murre J.M.J. ,   ANDI consortium, Schmand B.A. 
Published: May 2019

AbstractObjective:Parkinson’s disease with mild cognitive impairment (PD-MCI) is a risk factor for progression to PD dementia (PDD) at a later stage of the disease. The consensus criteria of PD-MCI use a traditional test-by-test normative comparison. The aim of this study was to investigate whether a new multivariate statistical method provides a more sensitive tool for predicting dementia status at 3- and 5-year follow-ups. This method allows a formal evaluation of a patient’s profile of test scores given a large aggregated database with regression-based norms.Method:The cognitive test results of 123 newly diagnosed PD patients from a previously published longitudinal study were analyzed with three different methods. First, the PD-MCI criteria were applied in the traditional way. Second, the PD-MCI criteria were applied using the large aggregated normative database. Last, multivariate normative comparisons (MNCs) were made using the same aggregated normative database. The outcome variable was progression to dementia within 3 and 5 years.Results:The MNC was characterized by higher sensitivity and higher specificity in predicting progression to PDD at follow-up than the two PD-MCI criteria methods, although the difference in classification accuracy did not reach statistical significance.Conclusion:We conclude that MNCs could allow for a more accurate prediction of PDD than the traditional PD-MCI criteria, because there are encouraging trends in both increased sensitivity and increased specificity. (JINS, 2019,25, 678–687)