bluuebunny/crossref_metadata_2025_split huggingface dataset:
Solar cycle prediction
Authors: Petrovay Kristóf 
Published: March 2020

AbstractA review of solar cycle prediction methods and their performance is given, including early forecasts for Cycle 25. The review focuses on those aspects of the solar cycle prediction problem that have a bearing on dynamo theory. The scope of the review is further restricted to the issue of predicting the amplitude (and optionally the epoch) of an upcoming solar maximum no later than right after the start of the given cycle. Prediction methods form three main groups. Precursor methods rely on the value of some measure of solar activity or magnetism at a specified time to predict the amplitude of the following solar maximum. The choice of a good precursor often implies considerable physical insight: indeed, it has become increasingly clear that the transition from purely empirical precursors to model-based methods is continuous. Model-based approaches can be further divided into two groups: predictions based on surface flux transport models and on consistent dynamo models. The implicit assumption of precursor methods is that each numbered solar cycle is a consistent unit in itself, while solar activity seems to consist of a series of much less tightly intercorrelated individual cycles. Extrapolation methods, in contrast, are based on the premise that the physical process giving rise to the sunspot number record is statistically homogeneous, i.e., the mathematical regularities underlying its variations are the same at any point of time, and therefore it lends itself to analysis and forecasting by time series methods. In their overall performance during the course of the last few solar cycles, precursor methods have clearly been superior to extrapolation methods. One method that has yielded predictions consistently in the right range during the past few solar cycles is the polar field precursor. Nevertheless, some extrapolation methods may still be worth further study. Model based forecasts are quickly coming into their own, and, despite not having a long proven record, their predictions are received with increasing confidence by the community.
Radiation hydrodynamics in simulations of the solar atmosphere
Authors: Leenaarts Jorrit 
Published: March 2020

AbstractNearly all energy generated by fusion in the solar core is ultimately radiated away into space in the solar atmosphere, while the remaining energy is carried away in the form of neutrinos. The exchange of energy between the solar gas and the radiation field is thus an essential ingredient of atmospheric modeling. The equations describing these interactions are known, but their solution is so computationally expensive that they can only be solved in approximate form in multi-dimensional radiation-MHD modeling. In this review, I discuss the most commonly used approximations for energy exchange between gas and radiation in the photosphere, chromosphere, and corona.
Pollination biology of large cardamom (Amomum subulatum Roxb.) with special emphasis on honey bees (Apis spp.) and bumble bees (Bombus spp.) pollinators
Authors: Sharma Ghanashyam , Partap Uma , Sharma Durga P. 
Published: March 2020

AbstractWe studied pollination ecology of large cardamom (Amomum subulatum) in three altitudinal gradients (1100, 1500, 2000 m) in the Sikkim Himalaya, with the hypothesis that both honey bees (Apisspp.) and bumble bees (Bombus braviceps, B. haemorrhoidalis) contribute to pollination and enhance yield. We placed honey bees colonies in cardamom stands, studied pollination within 50 m radius, 250 m away from it; and under control nets restricting pollinators. Honey bees showed highest number of floral visits (19.24 ± 4.23 per 12 m2) within 50 m than bumble bees (13.87 ± 3.12 per 12 m2). In 250 m stand, bumble bees visits (20.57 ± 5.31 per 12 m2) were higher than honey bees (9.44 ± 2.54 per 12 m2). Pollen removal by honey bees and bumble bees was 30–40% and 50–70% of the total pollen, respectively. Time spent across sites and treatments by honey bees ranged higher (12.87–36.25 s flower−1), than bumble bees (4.60–27.80 s flower−1). Visitation of bees increased with increasing number of cardamom flowers and showed positive correlation (r2 = 0.46–0.55, P < 0.001). Number of capsules per spike, capsule/seed weight, and gross agronomic yield was highest within 50 m, lower in 250 m and lowest in control confirming that honey bees pollinated stand had higher yield. The study also confirmed that both honey bees and bumble bees were pollen collectors and pollination is by-product of their foraging activity on the flowers. This study suggests new insight on contribution of honey bees to large cardamom pollination and further research is needed for pollinators-large cardamom interaction.
The serum squamous cell carcinoma antigen level in inverted sinonasal papilloma and nasal polyps patients
Authors: Promsopa Chakapan , Suwansri Supakan , Khuntikij Paiwon 
Published: March 2020

ObjectiveTo clarify whether the serum squamous cell carcinoma antigen (SCCA) levels of patients with inverted papilloma (IP) are different from patients with nasal polyps (NP) and rhinitis.Materials and methodsSerum SCCA levels were measured in 30 patients with IP and 30 patients with NP at one day before surgery and seven days after surgery and measured in 28 patients with rhinitis.ResultsElevated serum SCCA levels (>1.5 ng/ml) were found in 80.0% of patients in the IP group, 6.7% of patients in the NP group and 14.3% of patients in the rhinitis group, which was a significant difference. The medians of serum SCCA levels in the IP, NP and rhinitis groups were 3.9, 0.8 and 1.1 ng/ml, respectively, which was a significant difference. The SCCA level in IP group was not significantly correlated according to Krouse Staging. There was a significant difference in serum SCCA levels between the pre‐ and postoperative stages in the IP group, at 3.9 and 0.8 ng/ml, respectively, while in the NP group the levels were 0.8 and 1.0 ng/ml, not significantly different. With regard to the IP diagnosis in the IP and NP group based on the SCCA level (>1.5 ng/ml), sensitivity and specificity was 80.0% and 93.3%, respectively.ConclusionsThe serum SCCA level in patients with IP was elevated and then it decreased after surgery. This was different from NP and rhinitis patients who mostly had normal levels, which did not change.
Organized Labor Strikes and Social Spending in Latin America: The Synchronizing Effect of Mass Protest
Authors: Kim Dongkyu , Kim Mi-son , Villegas Cesar 
Published: March 2020

ABSTRACTThe theories and evidence about relationships between democracy and social spending in Latin America are highly contested. A recent study shows that collective protest by organized labor effectively increases social security and welfare spending, whereas mass protest does not have comparable effects on human capital spending in Latin American democracies. This article reexamines the analysis and demonstrates that organized labor alone cannot sway democratic governments. Labor strikes require the synchronizing effect of mass protest to obtain government concessions. Only through concurrent episodes of mass protest can organized labor overcome the numerical disadvantage of pressing democratic government for social welfare spending. In understanding the relationship between labor protests and social welfare spending through the lens of insider-outsider dichotomy, it is critical to consider the synchronizing effect of mass protests. The findings remain robust with alternative measures of democracy and various model specifications.
The development of non-coherent passive radar techniques for space situational awareness with the Murchison Widefield Array
Authors: Prabu Steve , Hancock Paul J. , Zhang Xiang , Tingay Steven J. 
Published: March 2020

AbstractThe number of active and non active satellites in Earth orbit has dramatically increased in recent decades, requiring the development of novel surveillance techniques to monitor and track them. In this paper, we build upon previous non-coherent passive radar space surveillance demonstrations undertaken using the Murchison Widefield Array (MWA). We develop the concept of the Dynamic Signal to Noise Ratio Spectrum (DSNRS) in order to isolate signals of interest (reflections of FM transmissions of objects in orbit) and efficiently differentiate them from direct path reception events. We detect and track Alouette-2, ALOS, UKube-1, the International Space Station, and Duchifat-1 in this manner. We also identified out-of-band transmissions from Duchifat-1 and UKube-1 using these techniques, demonstrating the MWA’s capability to look for spurious transmissions from satellites. We identify an offset from the locations predicted by the cataloged orbital parameters for some of the satellites, demonstrating the potential of using MWA for satellite catalog maintenance. These results demonstrate the capability of the MWA for Space Situational Awareness and we describe future work in this area.
Good Bets, Bad Bets and Dark Horses: Allied Intelligence Officers’ Encounters with German Civilians, 1944–1945
Authors: Rauch Stefanie 
Published: March 2020

AbstractThis article explores Allied intelligence officers’ encounters with and interrogations of German civilians from autumn 1944 onwards, psychological warfare operations directed at civilians, and their wider ramifications. Focusing especially on the officers serving with the Psychological Warfare Division (PWD), I will demonstrate that field intelligence officers’ stance towards German civilians was fluid and often ambiguous, with the encounter causing considerable distress to some of them. Their reports and correspondence further suggest that in this period, Germans readily professed knowledge of atrocities. But contrary to intelligence officers’ expectations, they failed to accept any guilt or responsibility. Finally, I will argue that the very foundations and techniques of Western Allied psychological warfare may have reinforced and legitimised justification strategies that separated between “real” Nazis and everyone else. This was at odds with one of the central aims of Military Government, i.e. to inculcate a sense of culpability in Germans.
Using real-time ultrasound for in vivo assessment of carcass and internal adipose depots of dairy sheep
Authors: Afonso J. , Guedes C. M. , Teixeira A. , Santos V. , Azevedo J. M. T. , Silva S. R. 
Published: March 2020

AbstractFifty-one Churra da Terra Quente ewes (4–7 years old) were used to analyse the potential of real-time ultrasound (RTU) to predict the amount of internal adipose depots, in addition to carcass fat (CF). The prediction models were developed from live weight (LW) and RTU measurements taken at eight different locations. After correlation and multiple linear regression analysis, the prediction models were evaluated by k-fold cross-validation and through the ratio of prediction to deviation (RPD). All prediction models included at least one RTU measurement as an independent variable. Prediction models for the absolute weight of the different adipose depots showed higher accuracy than prediction models for fat content per kg of LW. The former showed to be very good or excellent (2.4 ⩽ RPD ⩽ 3.8) for all adipose depots except mesenteric fat (MesF) and thoracic fat, with the model for MesF still providing useful information (RPD = 1.8). Prediction models for fat content per kg of LW were also very good or excellent for subcutaneous fat, intermuscular fat, CF and body fat (2.6 ⩽ RPD ⩽ 3.2), while the best prediction models for omental fat, kidney knob, channel fat and internal fat still provided useful information. Despite some loss in the accuracy of the estimates obtained, there was a similar pattern in terms of RPD for models developed from LW and RTU measurements taken just at the level of the 11th thoracic vertebra. In vivo RTU measurements showed the potential to monitor changes in ewe internal fat reserves as well as in CF.
Bullfights Redux: Business, Politics, and the Failure of Transnational Cultural Transfer in 1920s Budapest
Authors: Vari Alexander 
Published: March 2020

AbstractSpanish bullfights have been organized twice in Hungary: in 1904 and 1924. Unlike in 1904, when the bullfights arrived in Budapest from Paris and were held with the city's urban tourism promotion interests in mind, the 1924 corrida was connected to the internationalization of Spanish bullfights through their support by fascist Italy, causing a domestic political imbroglio in Hungary due to competing political and business interests at home. At the same time, the bullfights represented another novelty in the field of transnational popular entertainment, whose different waves had continuously reached Budapest since the late nineteenth century. Focusing on the 1924 event, the article argues that the bullfights organized in Budapest that year need to be understood from the perspective of interactions between postwar European authoritarian cultural politics, the domestic political scene in Hungary, and Spanish attempts to turn the bullfights into a transnational spectacle rivaling the popularity of British football. Although the bullfights did not take root in Hungary, their organization in Budapest represents an important chapter in the global advance of twentieth-century popular culture, a historically informed understanding of the formation of which requires consideration not just of successful but also failed processes of cultural transfer.
On how different combinations of conditions produce different early exit/retirement outcomes: a qualitative (case-oriented) comparison of Denmark and Sweden
Authors: Jensen Per H. 
Published: March 2020

AbstractDenmark and Sweden are rather similar in most societal dimensions, but differ markedly with regard to the employment rate among older workers, which in 2015 was 65 per cent in Denmark and 75 per cent in Sweden. Using a qualitative (or case-oriented) comparative approach, this article seeks to identify configurations or combinations of conditions that have produced these differences in older workers’ work patterns. From an inter-disciplinary perspective, the article draws on the conceptual framework of push (e.g.involuntary retirement due to poor health), pull (e.g.voluntary retirement because of generous welfare benefits), jump (e.g.exit due to a search for life conditions that are more fulfilling than paid work), stay (e.g.older workers remain voluntarily in the labour market because work is fulfilling and well paid) and stuck (e.g.older workers remain involuntarily in the labour market because they cannot afford to retire). Findings are that low employment rates in Denmark are an outcome of a relatively strong combination of push–pull–jump factors, while Sweden, with its high employment rate, exhibits a combination of stay–stuck conditions.
Learning self-play agents for combinatorial optimization problems
Authors: Xu Ruiyang , Lieberherr Karl 
Published: March 2020

Abstract
Recent progress in reinforcement learning (RL) using self-play has shown remarkable performance with several board games (e.g., Chess and Go) and video games (e.g., Atari games and Dota2). It is plausible to hypothesize that RL, starting from zero knowledge, might be able to gradually approach a winning strategy after a certain amount of training. In this paper, we explore neural Monte Carlo Tree Search (neural MCTS), an RL algorithm that has been applied successfully by DeepMind to play Go and Chess at a superhuman level. We try to leverage the computational power of neural MCTS to solve a class of combinatorial optimization problems. Following the idea of Hintikka’s Game-Theoretical Semantics, we propose the Zermelo Gamification to transform specific combinatorial optimization problems into Zermelo games whose winning strategies correspond to the solutions of the original optimization problems. A specially designed neural MCTS algorithm is then introduced to train Zermelo game agents. We use a prototype problem for which the ground-truth policy is efficiently computable to demonstrate that neural MCTS is promising.
Confronting the anomaly: directions in (German) economic research after the crisis
Authors: Jacob Ulrike , Brust Oliver A. 
Published: March 2020

ArgumentRecurring economic crises, like the one of 2007-2008, led to criticism of economic research and a demand to develop new strategies to avoid them. Standard economic theories use conventional approaches to deal with economic challenges, heterodox theories try to develop alternatives with which to face them. It remains unclear whether the 2007-2008 crisis led to a change in economic research as well as to a consideration of alternative approaches. We used co-word analysis to map the structure of economic research in Germany between 2005 and 2014. Core topics within economic research, such as “market” or “production” hardly shift and can be linked to standard economic theories. Peripheral topics such as “inequality” or “unemployment” show greater dynamics. However, only a few of these topics can be linked to heterodox approaches. Certain changes have occurred in reaction to the 2007-2008 crisis. However, the unchanged importance of standard economic topics raises the question whether these changes are sufficient to face coming economic challenges.
Language policy and corporate law: A case study from Norway
Authors: Sanden Guro R. 
Published: March 2020

AbstractThis paper investigates how 492 of the largest companies in Norway comply with the language requirement of the Norwegian Accounting Act Article 3-4. The results show that 36% of the companies presented their financial statements in Norwegian only, 45% in one or more language(s) in addition to Norwegian, while 19% had been granted dispensation and presented statements in English-only. The company’s ownership, use of English as a corporate language, and industry affiliation were the three most commonly mentioned reasons for dispensation, but the findings show significant differences between industry sectors in terms of language choice. The study contributes to corporate law research by examining the interpretation and application of the Norwegian Accounting Act by the Norwegian Directorate of Taxes; to sociolinguistics by shedding new light on the concepts of domain loss and diglossia; and to language-sensitive research in international business by analysing language use in Norwegian companies.
Discrimination on immigrant trainees
Authors: Tomori S. , Pinto da Costa M. 
Published: March 2020

IntroductionMigration and its effects in the life of skilled health workforce immigrants are a concern. However, the perceived challenges and advantages of being an immigrant trainee and their views on having access to local opportunities have not been studied so far. This can potentially play an important role in trainees’ future decisions to migrate.ObjectivesThis work has focused in exploring the perceptions of immigrant psychiatry trainees in several European countries about feeling discriminated, the circumstances they felt discriminated and how this perception affected their future migratory plans.MethodsA semi-structured questionnaire was circulated to psychiatry trainees in Europe between 2013 and 2014.ResultsMore than one in ten trainees across Europe were immigrants already. Top host countries were UK, Switzerland and Sweden. Approximately one in twenty trainees across Europe had the perception of feeling discriminated or not having the same opportunities as the native trainees, especially concerning the work and academic conditions and the social and financial conditions. On the other hand, nearly one in ten trainees felt they had the same opportunities. The country with the highest level of satisfactionwas the UK and with the lowest was Ireland. Almost half of the psychiatry trainees who felt discriminated in their previous migratory experience want to migrate again.ConclusionsA high number of immigrant psychiatry trainees feels that they do not have the same opportunities as local trainees and they are considering migrating again. Further research on feeling discriminated by immigrant workforce is necessary to clarify this differences.Disclosure of interestThe authors have not supplied their declaration of competing interest.
Profile of Chest Injuries and Oxygen Therapy in Trauma Patients with Acute Respiratory Failure after the Jiangsu Tornado in China: A Retrospective Study
Authors: Mu Gen hua , Lu Zhong qian , Li Xing , Chen Ping fa , He Lei , Sun Yun hao , Hou Shan shan , Deng Yi jun 
Published: March 2020

AbstractBackground:The aim of this study was to analyze the profile of chest injuries, oxygen therapy for respiratory failure, and the outcomes of victims after the Jiangsu tornado, which occurred on June 23, 2016 in Yancheng City, Jiangsu Province, China.Methods:The clinical records of 144 patients referred to Yancheng City No.1 People’s Hospital from June 23 through June 25 were retrospectively investigated. Of those patients, 68 (47.2%) sustained major chest injuries. The demographic details, trauma history, details of injuries and Abbreviated Injury Scores (AIS), therapy for respiratory failure, surgical procedures, length of intensive care unit (ICU) and hospital stay, and mortality were analyzed.Results:Of the 68 patients, 41 (60.3%) were female and 27 (39.7%) were male. The average age of the injured patients was 57.1 years. Forty-six patients (67.6%) suffered from polytrauma. The mean thoracic AIS of the victims was calculated as 2.85 (SD = 0.76). Rib fracture was the most common chest injury, noted in 56 patients (82.4%). Pulmonary contusion was the next most frequent injury, occurring in 12 patients (17.7%). Ten patients with severe chest trauma were admitted to ICU. The median ICU stay was 11.7 (SD = 8.5) days. Five patients required intubation and ventilation, one patient was treated with noninvasive positive pressure ventilation (NPPV), and four patients were treated with high-flow nasal cannula (HFNC). Three patients died during hospitalization. The hospital mortality was 4.41%.Conclusions:Chest trauma was a common type of injury after tornado. The most frequent thoracic injuries were rib fractures and pulmonary contusion. Severe chest trauma is usually associated with a high incidence of respiratory support requirements and a long length of stay in the ICU. Early initiation of appropriate oxygen therapy was vital to restoring normal respiratory function and saving lives. Going forward, HFNC might be an effective and well-tolerated therapeutic addition to the management of acute respiratory failure in chest trauma.