bluuebunny/crossref_metadata_2025 huggingface dataset:
WAGERING PREFERENCES OF NFL BETTORS: DETERMINANTS OF BETTING VOLUME
Authors: Paul Rodney J , Weinbach Andrew
Published: August 2020

Actual betting volume, in terms of the number of bets placed on each game, is studied for the 2008 National Football League season.  The dataset includes bets placed through a select group of online sportsbooks, collectively totaling an average of more than 85,000 bets per game.  Game-to-game betting volume is shown to be affected by television coverage, as prime-time games on NBC and ESPN have large positive and significant effects.  NFL Network coverage, not universally available for viewers, is shown to have a negative and significant effect.  Bettors are also shown to prefer matchups between high-quality teams, enjoy uncertainty of outcome, and prefer expected high scoring contests.  It appears much of the betting action on NFL football reflects consumption, rather than investment.
EVALUATING THE PREDICTIVENESS AND PROFITABILITY OF FOREIGN EXCHANGE RATE FORECASTING MODELS
Authors: Santamaria Daniel
Published: August 2020

This paper evaluates the performance of two competing currency models as a forecasting and trading tool in fund management. A dynamic vector error correction model is utilized to construct a currency forecasting and fair value forecasting model for the Euro-Dollar exchange rate. Emphasis is placed on robustness testing model performance by changing its specification and how both models perform across different time periods. Based on the accuracy of the forecasts the fair value model outperforms the currency forecasting model; a finding that is not supported using directional forecasts. This is robust to changes in model specification and across different time spans that cover pre-and current financial crisis periods. It is also discovered that the evaluation criteria used and prevailing market conditions determines whether model performance translates into value added in a currency fund.
Multivariate Methods in Assessing the Accuracy of Prediction Markets Ex Ante based on ohe Highest-Price Criterion
Authors: Lin Hung-Wen , Tung Chen-yuan , Yeh Jason
Published: August 2020

This study successfully establishes the principal component analysis with discriminant analysis (PCA-DA) model to assess the accuracy of contracts in the prediction markets ex ante based on the highest-price criterion. Trained by the xFuture data (7,274 contracts of future events) from 2006-2011, the PCA-DA model shows learning effects and provides 97.72% confidence to predict the outcome of any contract discriminated to the correct prediction group in the Exchange of Future Events. However, we need to greatly improve the low confidence of 19.58% for the PCA-DA model to predict the result of any contract discriminated to the incorrect prediction group.
Wanna bet there will be war? A time-series analysis of prediction markets during the Libya conflict 2011
Authors: Woerle Sebastian Matthias
Published: August 2020

This paper tests the explanatory power of an online Prediction market on the ousting of Muammar Gaddafi as Libya’s leader during the uprising in 2011. Based on the theory of efficient markets and collective intelligence, it employs a GARCH time-series analysis and an event study of Intrade data to test the impact of events on market performance and trading volume. The market distinguishes sensibly between relevant and irrelevant news for the outcome of the conflict and prices them in at a surprising speed. Some support for short-term anticipative trading and price performance is found. The analyzed market is found to be semi-strong efficient and works as an evaluative tool in international conflict.
Liquidity Provision and Cross Arbitrage in Continuous Double-Auction Prediction Markets
Authors: Antweiler Werner
Published: August 2020

Continuous double-auction prediction markets often exhibit low transaction volume due to substantial bid-ask spreads. This paper explores a novel method of providing artificial liquidity in continuous double-auction prediction markets by introducing an automated market maker that engages in zero-profit cross-arbitrage in multi-contract markets. Empirical analysis of observed bid-ask spreads, liquidity, offer acceptance, and order sizes in the 2008 UBC Election Stock Market provides additional new insights into the micro-structure of prediction markets.
The power of priors: How confirmation bias impacts market prices
Authors: Cipriano Michael , Gruca Thomas S
Published: August 2020

One form of confirmation bias is the tendency for people to ignore information that is inconsistent with their current beliefs. While confirmation bias is the subject of both analytical models and experiments in accounting and finance, its effect on market prices has not been studied due to limitations associated with traditional financial markets. In eleven real-money movie box office prediction markets, confirmation bias was induced in all traders via the explanation effect, i.e. a requirement to submit a box office forecast and an explanation prior to trading. When all traders are subject to confirmation bias, market prices do not accurately reflect new, value-relevant information. However, in comparable a set of seven real-money movie prediction markets that included both traders who have not been subject to explanation requirement and those who have, we find efficient incorporation of new information into market prices. This study extends our knowledge of the conditions under which individual trader biases affect market prices and provides potential insights into open questions about forecasting errors among financial analysts.
Lost Decade, Market Efficiency and Technical Trading Rules: Evidence from Greece
Authors: Metghalchi Massoud
Published: August 2020

We apply several well-known technical indicators to the daily data for the Athens Composite Share Price from 1/2/2000 to 12/31/2012.  Our findings strongly support the predictive power of technical trading rules; further, we ask whether this predictive power of technical analysis can be exploited to beat the profitability of the buy-and-hold strategy considering both transaction costs and risk.  We conclude that it is possible to beat the buy-and-hold strategy even considering transaction costs and risk.
Testing of Long Memory in Indian Stock Market using ARFIMA model
Authors: Tripathy Naliniprava
Published: August 2020

This paper examines the presence of long memory property and market cycles in the Indian stock market by using daily closing price of Nifty Index from May 2009 to April 2015. The study has used Unit Root Test, Autocorrelation Test, Rescaled Range (R/S) statistics and ARFIMA Models to determine the long memory property in Indian stock market. The result of the study shows that Indian stock market exhibits a high degree of positive long-term persistence. The results of ARFIMA model also indicates that stock price index exhibits strong evidence of long memory and contradicts the evidence against efficient market hypothesis. This implies that future stock price can be predicted. The study concludes that there is an arbitrage opportunities available for international investors and they can make abnormal profits by investing in Indian stock market.
A Simple Decision Market Model
Authors: Grainger Daniel , Sun Sizhong , Watkin-Lui Felecia , Case Peter
Published: August 2020

Economic modeling of decision markets has mainly considered the market scoring rule setup. Literature has made reference to the alternative, joint elicitation type decision market, but no in depth analysis of it appears to have been published. This paper develops a simple decision market model of the joint elicitation type, that provides a specific decision market nomenclature on which to base future analysis. A generally accepted prediction market model is modified, by introducing two additional concepts: “proper information market” and “relevant information”. Our work then provides original contributions to the theoretical discourse on information markets, including finding the sufficient and necessary condition for convergence to the best possible prediction. It is shown in our new prediction market model that “all agents express relevant information” is a sufficient and necessary condition for convergence to the direct communication equilibrium in a proper information (prediction) market. Our new prediction market model is used to formulate a simple decision market model of the joint elicitation market type. It is shown that our decision market will select the best decision if a specific selection and payout rule is defined. Importantly, our decision market model does not need to delay payment of any contracts to the observation of the desired outcome. Therefore, when dealing with long-term outcome projects, our decision market does not need to be a long running market.  Future work will test for the statistical significance of relevant information (identified as important in our idealized decision market model) in laboratory and real world settings.
CROSSING THE THRESHOLD: ENHANCING OPPORTUNITIES FOR PRACTICAL ENQUIRY IN SCHOOL SCIENCE THROUGH THRESHOLD CONCEPTS
Authors: Deacon Mark
Published: August 2020

The higher education sector has been working with threshold concepts since they were first postulated in 2003. Threshold concepts offer a way to focus on areas of content which students find challenging to master. Once mastered, threshold concepts explain and integrate further areas of learning. In this sense threshold concepts can be regarded as liminal.

Although well established in the higher education sector, the use of threshold concepts has not been extensively explored in schools. This article focuses on Science in the upper secondary school. Yet it is possible to imagine scenarios where highly targeted teaching of liminal content leads to space being created for practical enquiry.

There is an established theoretical pedagogical framework within which threshold concepts can sit comfortably and will be familiar to schoolteachers. This framework also provides a route by which troublesome liminal knowledge can be taught.

There is then the question of defining and identifying threshold concepts. Threshold concepts do suffer from a lack of definition. Much of the literature explores ideas as diverse as complex physics and attitudes and values of nursery workers. This diversity has led to a discipline specific approach to defining concepts. It is argued that teachers can work with a range of stakeholders to identify troublesome knowledge.
This could alter curriculum planning, particularly time allocation, to specific troublesome content and provide time for a more diverse learning experience for pupils.
Der Grund der Malerei
Authors: Peselmann Veronica
Published: August 2020

Painting is a process. Canvases are cut, stretched, primed, and painted in several layers. Conservators intervene to preserve artworks. Each step of this process occurs on the material ground of painting. The term ‘ground’ therefore includes different meanings: the material, the priming as well as the composition of foreground, middle-, and background. In the 19th century, the understanding of ‘ground’ changed.

Veronica Peselmann examines the conceptual and terminological understanding of ‘ground’ in that time. She presents ‘ground’ as a key term for painting, illustrated with examples from Camille Corot and Gustave Courbet.
Lichte Wechselspiele zwischen Fotografie und Neuem Bauen
Authors: Waschke Cora
Published: August 2020

In the 1920s and 1930s, photography became the most important medium for conveying transparent and reflective glass-iron architecture. The ideas of New Building such as spatial penetration and dematerialization could be convincingly visualized in photographs that were influenced by New Vision. What role did the interaction between the material and media qualities of glass and photography play? And what influence did photography have on the designs and the understanding of Neues Bauen? I explore this as well as the concept of transparency at that time by means of numerous historical pictures and texts.
Das politische System der Schweiz
Authors: Vatter Adrian
Published: August 2020

Switzerland's political system, with its developed concordance, direct democracy and federal structures, is in many respects considered both a model and a special example of a functioning democracy in the 21st century. This textbook, now in its fourth, completely updated edition, deals with the most important political institutions and actors in the Swiss political system, subjects them to an international comparison and reveals the considerable changes in Swiss politics over the last 20 years. It places special emphasis on presenting the workings and effects of the institutions that are typical of Switzerland, such as the direct democratic people's rights, the broadly supported concordance government and the diverse federal institutions.

Adrian Vatter is the director of the Institute of Political Science at the University of Bern and holds the chair of Swiss Politics.
Automatisiertes Fahren und strafrechtliche Verantwortlichkeit wegen Fahrlässigkeit
Authors: Wigger Dominika
Published: August 2020

Der Einsatz automatisierter Fahrzeuge im Straßenverkehr wirft zahlreiche Fragen für das Strafrecht auf, zu deren Klärung diese Arbeit beitragen soll. Dazu wird die Rechtslage und der Umgang mit Unfällen automatisierter Fahrzeuge in den USA vergleichend miteinbezogen.

Die Untersuchung geht der Frage nach, ob eine Verantwortlichkeit intelligenter Systeme – gewissermaßen als „Tatnächstem“ – möglich erscheint.

Im Hinblick auf den Fahrer, Halter und Hersteller der Fahrzeuge wird anhand von Fallgruppen und fiktiven Szenarien die Strafbarkeit wegen fahrlässig begangener Körperverletzungs- und Tötungsdelikte sowie hinsichtlich der Straßenverkehrsdelikte betrachtet. Dabei liegt ein Fokus auf Möglichkeiten der Einschränkung von Sorgfaltspflichten durch „erlaubte Risiken“. Zudem wird diskutiert, wer strafrechtlich verantwortlicher Fahrzeugführer ist, wenn das System die Fahraufgabe übernimmt.

Die Arbeit schließt mit Überlegungen zur Entkriminalisierung bei Fahrlässigkeit im Straßenverkehr.
Häusliche Gewalt
Authors: Derks Andreas
Published: August 2020

Bei Einsätzen in Fällen von häuslicher Gewalt sieht sich der Polizeibeamte einer komplexen Situation gegenüber: Zeitlich dringlich und oft unter Gefahr für Leib, Leben und Gesundheit muss er jede einzelne Beziehungskonstellation und Gefährdungssituation bewerten und Maßnahmen unter Beachtung des Verhältnismäßigkeitsgrundsatzes treffen.

Das Werk behandelt die Fragestellungen, die sich bei der Umsetzung der polizeilichen Maßnahmen ergeben. In chronologischer Reihenfolge werden die praktischen Handlungsabläufe dargestellt und die damit zusammenhängenden rechtlichen Aspekte erläutert.
Aktuelle Rechtsprechung ist ebenso enthalten wie die Beschreibung von Einzelfällen. Anhand der Darstellung vieler vom Autor selbst erlebter Einsatzsituationen werden auch Fehlerquellen anschaulich dargestellt und Aspekte für entsprechende Gefährdungsbewertungen aufgezeigt. Sowohl für praktizierende Beamte als auch für Studierende bietet das Werk eine systematische Darstellung der Materie.
In der 2. Auflage werden die zwischenzeitlich erfolgten Änderungen der Polizeigesetze und neue bzw. erweiterte Befugnisse berücksichtigt, die für den Bereich der häuslichen Gewalt von Bedeutung sind.

Andreas Derks, Dienstgruppenleiter, Wachdienst, Polizeipräsidium Bochum.
Mitglied der Landesarbeitsgruppe Häusliche Gewalt NRW.
Anbieter von Fortbildungen für Führungskräfte und kriminalpolizeiliche Sachbearbeiter zum Thema "Häusliche Gewalt".
Verausgabungsbereitschaft und Overconformity im Kontext von Verletzungen im Sport
Authors: Würth Sabine
Published: August 2020

Verletzungen sind im Sport allgegenwärtig. Das Buch bietet zunächst einen Überblick über die Bedeutsamkeit von Verletzungsereignissen im Sport sowie sportpsychologische Modelle zu deren Erklärung und Prävention. Es wird die Bedeutung psycho-sozialer Wechselwirkungen herausgearbeitet und in eine Forschungskonzeption übergeführt. In drei empirischen Studien wird das Konzept der Overconformity to the sport ethics unter besonderer Berücksichtigung der exzessiven Verausgabungsbereitschaft untersucht. Overconformity spiegelt ein komplexes Einstellungsmuster wider, das sich in einem Übererfüllen impliziter sozialer Normen (z.B. "im Sport muss man immer alles geben"), gepaart mit einem hohen sozialen Statusstreben und dem Wunsch nach sozialer (?) Anerkennung äußert. Die Befunde der empirischen Studien zeigen auf, dass die Konzepte zur exzessiven Verausgabungsbereitschaft und zur Overconformity eine wertvolle Bereicherung der psychologischen Sportverletzungsforschung darstellen. Sie tragen einen substanziellen Beitrag zur Erklärung von Verletzungsereignissen im Sport bei. Differenzielle Effekte in verschiedenen Stichproben unterstreichen die Bedeutsamkeit des sozialen Umfelds und eröffnen neue Perspektiven in der Sportverletzungsforschung.
Evaluation der NRW-Sportschulen
Authors: Körner Swen , Bonn Benjamin , Grajczak Gregor , Segets Michael , Steinmann Annika , Symanzik Tino
Published: August 2020

Nachwuchsleistungssportler in Deutschland stehen in einer wichtigen Phase ihrer schulischen und sportlichen Entwicklung im Spannungsfeld einer doppelten Erwartung: Sie sollen sportlich und schulisch erfolgreich sein. Zur Entschärfung dieser Situation wurde im Jahr 2006 in Nordrhein-Westfalen ein eigenes Verbundmodell gestartet. Die "NRW-Sportschulen" verfolgen das Ziel, Sporttalente sowohl sportlich als auch schulisch optimal zu fördern und duale Karrieren von Schule und Leistungssport zu ermöglichen. Die Evaluation der NRW-Sportschulen setzt hier an und fragt, wie und mit welchen Effekten das Programm an den jeweiligen Standorten implementiert worden ist. Setzen die Standorte die ministeriellen Vorgaben für NRW-Sportschulen um? Welche schulspezifischen Organisationslogiken lassen sich festmachen? Trifft die NRW-Sportschule bei Schülern, Eltern, Lehrern und Trainern auf Akzeptanz? Wie zufrieden sind Akteure des organisierten Sports mit Strukturen und Prozessen an den jeweiligen NRW-Sportschulen? Welche Entwicklungen zeichnen sich speziell im Bereich sportlicher Talentförderung ab? Gelingt die duale Förderung? Die Evaluation der NRW-Sportschulen liefert eine Momentaufnahme, deren Ergebnisse rekursiv in den laufenden Prozess der Programmumsetzung einfließen.
Internal Controls and Credit Risk in European Banking: The Basel Committee on Banking Supervision Framework Approach
Authors: Kofi Akwaa-Sekyi Ellis
Published: August 2020

Poor corporate governance practices have been cited as contributory to the 2007 global financial crisis. The chapter explores a qualitative self-regulation approach to address a major risk facing banks using the Basel Committee on Banking Supervision (BCBS) framework of internal controls. The study examines the effect of the qualitative principles of the BCBS internal control framework on credit risk. Corporate institutions use internal control frameworks to address the most operational risks, but the current study hypothesizes a possible relation with the credit risk. This research covers banks from selected EU countries covering some period before and after the 2007 financial crisis using a fixed-effect model. We report a significant relationship between board functions and activities, board structure and board monitoring, and credit risk. The results indicate that investment in high-risk assets, bank profitability and board chair being ex-CEO increases credit risk in European banking. The chapter extends the scope of a previous work that used the elements of the COSO internal control framework on a single country. This quantitative measure of qualitative constructs of the framework complements existing research that uses algorithms and simulations to study credit risk.
Outdoor Recreation: Physiological Effects and Prevention of Socially Important Diseases
Authors: Boyadjiev Nikolay , Nikolova Georgieva Katerina , Angelova Angelova Hristova Penka
Published: August 2020

Physical activity improves the condition of the cardiovascular system, respiration, muscles, and metabolism and increases physical working capacity. This review of physiological effects and adaptation mechanisms of the outdoor recreation and its health benefits provides accessible information from a scientific point of view and research practice. Increased frequency of many socially important diseases such as diabetes mellitus type 2, metabolic syndrome and obesity, cardiovascular diseases, and others is associated with dramatically decreased physical activity in the last decades. Outdoor recreation for children, adolescents, adults, and older population is important for the prevention of these conditions. In this chapter, the authors describe in detail the physiological effects of different kinds of outdoor recreation physical activity with different intensities (such as walking, cycling, skiing, rowing, climbing, practicing some outdoor sports, etc.) and assess their benefits in the prevention of socially important diseases.
Reclamation of Soils Degraded by Surface Coal Mining
Authors: Fernando Spinelli Pinto Luiz , Stumpf Lizete , Miguel Pablo , Aldrighi Dutra Junior Leonir , Diego Leidemer Jeferson , da Silva Barbosa Lucas , Silva e Oliveira Mauricio
Published: August 2020

The largest Brazilian coal mine, called Candiota mine, is located in South Brazil, with an estimated reserve about 1.2 billion tons. Since late 2003, an experiment located at a reclaimed site in a coal mining area was conducted, in which a research group from the Federal University of Pelotas has been conducting a long-term experiment on soil quality with different plants species, such as Hemarthria altissima, Paspalum notatum cv. Pensacola, Cynodon dactylon cv. Tifton, and Urochloa brizantha. After 8.6 years of revegetation, soil samples at 0.20 depth were collected in minesoil and natural soil to determine physical attributes, and the organic carbon content. After 10.9 years of revegetation, soil samples at 0.10 m depth were collected to determine the biological attributes. According to the research results, it can be seen that the recovery of minesoil was more effective after 8.6 years of revegetation only in the physical condition up to 0.10 m depth. However, all soil physical attributes and organic matter content are still below the levels observed in the natural soil. The biological attributes after 10.9 years of revegetation have not yet been sufficient to restore a mites and springtails population close to the natural soil.
Thinning: An Overview
Authors: Cristina Gonçalves Ana
Published: August 2020

Thinning is one of the primordial silvicultural practices. It has been analysed by its methods and intensities, associated to the tree selection criteria. Yet, while some methods are of generalised use, others were developed for specific purposes. The goal of this review is to compile the existing information regarding tree selection, thinning methods and intensity as well as their effects on trees and stands. The effects of thinning indicate a reduction of density and a trend towards an increase of growth rates at tree level for a short time after thinning. Biomass and volume show similar or smaller values when compared to unthinned stands. Mortality and growth stagnation, especially in stands with low stability or vigour, can also occur. The modifications in stand structure can enhance its role as an adaptive measure.
Co-Administration of Morphine and Naloxone: Histopathological and Biochemical Changes in the Rat Liver
Authors: Peirouvi Tahmineh , Mirbaha Yasaman , Fathi-Azarbayjani Anahita , Shalizar Jalali Ali
Published: August 2020

Background: Co-administration of opioid agonists and antagonists at low doses has been reported to significantly enhance and/or prolong the analgesic effects and reduce or prevent tolerance to or dependence on opioids. Objectives: The current study aimed at evaluating the naloxone effect on morphine-induced histopathological and hematologic changes in rats. Materials and Mehods: Thirty mature male Wistar rats were categorized into three groups (n = 10) in a random manner, including the control group receiving normal saline, the morphine-sole group receiving morphine (5 mg/kg/day), and morphine + naloxone group receiving morphine and naloxone (5 and 0.4 mg/kg/day, respectively). After 50 days, the levels of alanine aminotransferase (ALT), alkaline phosphatase (ALP), triglyceride (TG), aspartate aminotransferase (AST), cholesterol, and high-density lipoprotein (HDL) were measured in the serum. Moreover, the levels of superoxide dismutase (SOD), catalase (CAT), malondialdehyde (MDA), and glutathione peroxidase (GPx) were measured to assess the serum antioxidant capacity. Histopathological changes were investigated via hematoxylin and eosin, Masson’s trichrome, and periodic acid-Schiff staining. Inter-group comparisons were made by GraphPad Prism software using one-way ANOVA and Tukey’s test. Results: The animals in the morphine + naloxone group showed higher AST, ALP, ALT, and CAT levels in comparison with the control and morphine-sole groups (P < 0.05). Our findings revealed no changes in the cholesterol, TG, SOD, and GPx levels among the groups (P > 0.05). However, the morphine-sole group exhibited higher serum levels of HDL compared with the controls (P < 0.05). The morphine-sole group showed fibrosis, local necrosis, immune cell infiltration, and diminished intra-cytoplasmic carbohydrate storage. Conclusions: The findings suggest that apart from unchanged serum markers, morphine can potentially induce hepatotoxicity, and at the same time, naloxone is able to ameliorate morphine-induced histopathological damages.
Debates para (in)disciplinar a história
Authors: Moreira Igor Lemos
Published: August 2020

Resenha da obra: AVILA, Arthur Lima de; NICOLAZZI, Fernando; TURIN, Rodrigo (Orgs.). A História (in)Disciplinada. Vitória: Editora Milfontes, 2019.
Les enjeux de la reconnaissance professionnelle au Québec
Authors: Dubois Hélène
Published: August 2020

Dans le cadre de leur mission de protection du public qui leur a été déléguée par l’État, les ordres professionnels doivent vérifier les qualifications et compétences pour émettre un permis. Or, le système professionnel, et les ordres en particulier, sont au coeur des difficultés rencontrées par des personnes immigrantes ou formées à l’extérieur du Québec qui tentent d’obtenir un permis pour la profession exercée dans leur pays d’origine. Comment le système professionnel doit-il prendre en compte la mondialisation, la mobilité de la main-d’oeuvre et la politique d’immigration du gouvernement du Québec dans le cadre de sa mission de protection du public?
L'identité professionnelle des médecins de famille au Québec
Authors: Côté Nancy , Fleury Charles , Mercure Daniel , Doyon Hubert , Savoldelli Mathilde
Published: August 2020

Cet article examine les incidences des transformations organisationnelles et culturelles contemporaines sur l’identité professionnelle des médecins de famille au Québec. Il vise à rendre compte, à partir de l’analyse de trois cohortes d’insertion sur le marché du travail, des nouvelles formes de rapport au travail qui contribuent à redéfinir l’identité professionnelle des médecins de famille. En vue de comprendre les changements dans les valeurs à l’égard du travail et de la profession médicale, la présente recherche adopte une position critique envers les modes d’explication fondés sur les thèses générationnelles. Ainsi, elle relève d’autres éléments à considérer afin de mieux comprendre l’évolution des identités professionnelles, notamment les conditions d’exercice du travail professionnel, les rigidités structurelles de genre, les changements de valeurs et les nouvelles situations de vie personnelle et familiale.
Instagram más allá del 'selfie': tendencias en la investigación en las redes sociales
Authors: San Cornelio Gemma
Published: August 2020

A principios del pasado mes de junio asistí al congreso Instagram Conference 2018: Studying Instagram Beyond Selfies, en la universidad de Middlessex, en Londres. Este evento constituyó una ocasión privilegiada para reunir investigadores de diferentes lugares que desarrollan su investigación en esta plataforma. Asimismo, permitió la identificación de algunas tendencias en la investigación académica en las redes sociales, que resumiré en este artículo.
La banalidad del mal e informar mal
Authors: Bernal Triviño Ana Isabel
Published: August 2020

Este verano se comentó en redes sociales la portada que el suplemento de Vocento, XLSemanal, dedicó al ministro de Interior de Italia, Matteo Salvini.
El festival de Sitges, agenda de la industria audiovisual
Authors: Garcia Massagué Mònica
Published: August 2020

Al 2009, el editor de Cine Scope (además de guionista y ex programador del Festival de Locarno) Mark Peranson dividió el ecosistema de los festivales en dos: por un lado, el festival de negocio y por otro, el festival de público. El primero se caracterizaría por un presupuesto elevado para su organización, un gran número de presencias acompañando los estrenos (la mayoría de ellas internacionales) y, sobre todo, la presencia de un mercado o actividad comercial intensa en su marco. El segundo modelo, por el contrario, por su menor presupuesto carecería de capacidad para atraer estrenos, presencias y su participación dentro de la industria sería más bien escasa o nula.
Anatomy of nerve fiber bundles at micrometer-resolution in the vervet monkey visual system
Authors: Takemura Hiromasa , Palomero-Gallagher Nicola , Axer Markus , Gräßel David , Jorgensen Matthew J , Woods Roger , Zilles Karl
Published: August 2020

Although the primate visual system has been extensively studied, detailed spatial organization of white matter fiber tracts carrying visual information between areas has not been fully established. This is mainly due to the large gap between tracer studies and diffusion-weighted MRI studies, which focus on specific axonal connections and macroscale organization of fiber tracts, respectively. Here we used 3D polarization light imaging (3D-PLI), which enables direct visualization of fiber tracts at micrometer resolution, to identify and visualize fiber tracts of the visual system, such as stratum sagittale, inferior longitudinal fascicle, vertical occipital fascicle, tapetum and dorsal occipital bundle in vervet monkey brains. Moreover, 3D-PLI data provide detailed information on cortical projections of these tracts, distinction between neighboring tracts, and novel short-range pathways. This work provides essential information for interpretation of functional and diffusion-weighted MRI data, as well as revision of wiring diagrams based upon observations in the vervet visual system.
m6A RNA methylation impacts fate choices during skin morphogenesis
Authors: Xi Linghe , Carroll Thomas , Matos Irina , Luo Ji-Dung , Polak Lisa , Pasolli H Amalia , Jaffrey Samie R , Fuchs Elaine
Published: August 2020

N6-methyladenosine is the most prominent RNA modification in mammals. Here, we study mouse skin embryogenesis to tackle m6A’s functions and physiological importance. We first landscape the m6A modifications on skin epithelial progenitor mRNAs. Contrasting with in vivo ribosomal profiling, we unearth a correlation between m6A modification in coding sequences and enhanced translation, particularly of key morphogenetic signaling pathways. Tapping physiological relevance, we show that m6A loss profoundly alters these cues and perturbs cellular fate choices and tissue architecture in all skin lineages. By single-cell transcriptomics and bioinformatics, both signaling and canonical translation pathways show significant downregulation after m6A loss. Interestingly, however, many highly m6A-modified mRNAs are markedly upregulated upon m6A loss, and they encode RNA-methylation, RNA-processing and RNA-metabolism factors. Together, our findings suggest that m6A functions to enhance translation of key morphogenetic regulators, while also destabilizing sentinel mRNAs that are primed to activate rescue pathways when m6A levels drop.
Cryo-EM analysis of PIP2 regulation in mammalian GIRK channels
Authors: Niu Yiming , Tao Xiao , Touhara Kouki K , MacKinnon Roderick
Published: August 2020

G-protein-gated inward rectifier potassium (GIRK) channels are regulated by G proteins and PIP2. Here, using cryo-EM single particle analysis we describe the equilibrium ensemble of structures of neuronal GIRK2 as a function of the C8-PIP2 concentration. We find that PIP2 shifts the equilibrium between two distinguishable structures of neuronal GIRK (GIRK2), extended and docked, towards the docked form. In the docked form the cytoplasmic domain, to which Gβγ binds, becomes accessible to the cytoplasmic membrane surface where Gβγ resides. Furthermore, PIP2 binding reshapes the Gβγ binding surface on the cytoplasmic domain, preparing it to receive Gβγ. We find that cardiac GIRK (GIRK1/4) can also exist in both extended and docked conformations. These findings lead us to conclude that PIP2 influences GIRK channels in a structurally similar manner to Kir2.2 channels. In Kir2.2 channels, the PIP2-induced conformational changes open the pore. In GIRK channels, they prepare the channel for activation by Gβγ.
Theoretical musings
Authors: Marder Eve
Published: August 2020

There is more to theory in biology than replicating the results of experiments – the best theory papers help experimentalists to identify which of their results might be general and to plan a path through the maze of all possible future experiments.
Wine Cultural Event as a Growing Phenomenon: Role of Novelty, Value and Satisfaction in Developing WOM
Authors: Yen Tsai-Fa (TF) , Wang Min-Hon
Published: August 2020

Positive word-of-mouth (WOM) is a promoter of a destination. To improve the image and increase the income of wine-producing areas, holding the wine cultural event is a good approach, which also is a growing trend. Meanwhile, exploring the novelty, value and satisfaction are meaningful for WOM of wine cultural event. Thus, a total of 419 valid samples were collected from wine cultural event held at Yibin in China. This study used structural equation modeling and the regression method to examine the proposed hypothesis. The results showed that tourists’ novelty, perceived value and satisfaction influence WOM. The study support three theoretical assumptions. First, novelty significantly positively affected perceived value while negatively affected event satisfaction but has no significant direct impact on WOM. Next, the perceived value had a significant and positive impact on event satisfaction and WOM, respectively. Finally, event satisfaction had a significant and positive influence on WOM. This study contributes to the literature addressing the WOM in a wine cultural tourism context. It also provides manageable results for managers involved in developing WOM.
The Nature of Mathematics Education; The Issue of Learning Theories and Classroom Practice
Authors: Atteh Evans
Published: August 2020

To achieve a successful mathematics education through the implementation of the school mathematics curriculum, the teacher’s beliefs emanating from their experiences (including learning theories) with their environment should be a considerable factor. This is to ensure that all learning situation in mathematics classroom generate understanding among the individuals involve for it to be meaningful. In this paper my goal is to highlight on some issues which are of great importance to mathematics education as a field of study. The issues in focus are; theory and practice, the role of theory in mathematics education research, some widely used learning theories in mathematics education, theories of models and modelling and their impact on mathematics research, teaching and learning, the aims of teaching and learning mathematics, and the status of mathematics education as knowledge field.
Comparison of Generalized Linear Model and Generalized Linear Mixed Model – An Application to Low Birth Weight Data
Authors: Ofori Michael Fosu , Twum Stephen B. , Osborne Jackson A. Y.
Published: August 2020

Background: Generalized Linear models are mostly fitted to data that are not correlated. However, very often data that are collected from health and epidemiological studies are correlated either as a result of the sampling methods or the randomness associated with the collection of such data. Therefore, fitting generalized linear models to such data that produce only fixed effects could lead to over dispersion in the model estimates.

Objectives: The objective of this study is to fit both generalized linear and generalized linear mixed models to a correlated data and compare the results of the two models.

Methods: Logistic regression is employed in fitting the generalized linear model since the dependent variable in the study is bivariate whilst the GLIMMIX model in SAS is used to fit the generalized linear mixed model.

Results: The generalized linear model produces over dispersion with higher errors among the parameter estimates than the generalized linear mixed model.

Conclusion: In dealing with a more correlated data, generalized linear mixed model, which can handle both fixed and random effects, is preferable to generalized linear model.
Alagille Syndrome: About Two Cases and Literature Review
Authors: Akhrif M. , Radi A. , Kmari M. , Ourrai A. , Hassani A. , Abilkassem R. , Agadr A.
Published: August 2020

Alagille syndrome is a multi-systemc genetic disorder with variable phenotypic penetrance that was first described in 1969 by Daniel Alagille.It is  characterized by anomalies of the intrahepatic bile ducts, heart, eye and skeleton, which are associated with facial features . The prognosis depends on the severity of the liver and heart diseases.  The authors reported  two  cases characterized by the  variability of clinical expression and evolution. The study concerned two girls aged  of 2 and 4 months  with no family history, who developed cholestatic jaundice evolving from the first month of life. The aim of this work is to remind the different clinical expressivity and the differentmodalities to manage the patients in order to ensure a best quality of life.
Polymer Optical Fibre Temperature Sensors - A Review
Authors: Soge Ayodele O.
Published: August 2020

Polymer optical fibre (POF) temperature sensors are rapidly replacing conventional temperature sensors owing to their unique and attractive features, such as small size, immunity to electromagnetic interference, multiplexing, and remote sensing capabilities. The recent developments in temperature sensing using polymer optical fibres are presented. Polymer optical fibre (POF) temperature sensors of various types: macro-bend fibre sensors, microfibre resonators, fibre Bragg grating, Fabry-Perot interferometers, and POF sensors coated with zinc oxide nanorods are discussed. This study also includes dual-parameter sensors to demonstrate intrinsic sensitivities of polymer fibres to temperature, relative humidity, and strain. The prospects and challenges of POF temperature sensors in the automotive industry, biomedical sector, chemical industry, and electrical power applications are also highlighted. This review aims to help researchers in this field identify areas of further work towards improving the accuracy and operating range of POF temperature sensors.
Moringa Value Chain: Mapping the Linkage between Actors, Processes and Activities in the District of Tiruppur
Authors: Kavithambika S. , Indumathi V. M. , Mahendran K.
Published: August 2020

Understanding relationships and linkages in a commodity value chain is a crucial step in Value Chain Analysis. The objective of this study was to identify and map the stakeholders of Moringa Value Chain in Tiruppur district of Tamil Nadu. Structured interview schedules were used to collect primary data from the actors along the chain. The study identified conventional and peculiar actors such as Input suppliers, Producers, Market intermediaries such as the Wholesalers, Processors, Retailers; and finally the end Consumers. The results revealed that there were six major channels that operated in the study area and Moringa was traded mostly in unprocessed form. Moringa value chain was mapped in different dimensions to dope out the actors involved in the chain, the core processes that took place along the chain, activities undertaken by each actor, tracing the product flow from the farm to fork, knowledge on quality requirements of the produce and the geographical flow of the produce. The study recommended that structuring an efficient value chain will be a possible solution; something which can only be possible through the joint efforts of smallholders, associations, larger companies and public institutions. Also, intervention in the area of linking actors in the value chain to prospective markets will also benefit them.
Comparison of Recurrence Rate in Excision of Conjunctival Rhinosporidiosis Mass with and without Cauterization of Base: A Randomized Clinical Trial
Authors: Singh Suchita , Sonwani Prabha , Shrivastava M.
Published: August 2020

Aim: To compare the recurrence rate of conjunctival rhinosporidiosis mass excision, with and without cauterization of base.

Study Design: Prospective randomized clinical trial.

Place and Duration of Study: Department of Ophthalmology, CIMS, Bilaspur (C.G), India. (Feb 2018-Dec 2019)

Methodology: Twenty patients (5-25years) who presented with conjunctival mass clinically diagnosed as ocular rhinosporidiosis were included in this study. Patients were recruited from OPD ophthalmology CIMS, Bilaspur (C.G). Patients were divided on alternate basis into two groups.  Each group had 10 patients. Group1 included excisions with cauterization of base with wet field cautery and group 2 included excisions without cautery. All the procedures and post-operative evaluation were done by the same surgeon. These two groups were compared for recurrence of mass at the same site and other sites. Post-operative evaluation was done at 1 week, 1 month, 3 months and 6 months.

Results: Patients’ age ranged between 5-15 years were more in both groups. There were more males than females and majority of them lived in rural areas where pond water was the only accessible portable water. Lower lid palpebral conjunctiva was more involved. The mean duration of lesion was similar in both groups. All the patients were examined at 1 week, 1 month, 3 months and 6 months post-operatively, to check for recurrence at the same site by the same surgeon. The ear, nose and throat was examined by an otolaryngologist. No recurrence was found after 6 months of the procedure at ocular and extra-ocular sites.

Conclusion: Our study concludes that in cases of rhinosporidiosis mass of palpebral conjunctiva, total excision of mass without cauterization of base is as effective as with cauterization of base.
PELATIHAN ANALISIS REGRESI UNTUK PENINGKATAN PENELITIAN GURU DI SMK INFORMATIKA SUMBER ILMU TULANGAN
Authors: Indrasetianingsih Artanti , Hermanto Elvira Mustikawati Putri
Published: August 2020

Penelitian ini dilakukan oleh guru yang bertujuan meningkatkan kualitas pem­belajar­an. Proses analisis dalam penelitian ini membutuhkan metode statistik untuk memper­oleh deskripsi dan kesimpulan. Analisis regresi adalah salah satu metode statistik yang dapat digunakan untuk menginterpretasikan data pendidikan. Analisis regresi adalah metode yang digunakan untuk mempelajari pengaruh suatu variabel terhadap variabel lain. SMK Infor­matika Sumber Ilmu adalah sekolah menengah kejuruan yang berlokasi di Kabupaten Tulang­an, Kabupaten Sidoarjo, Provinsi Jawa Timur. Kepala SMK Informatika Sumber Ilmu mengatakan bahwa wawasan guru tentang statistik masih perlu ditingkatkan. Oleh karena itu, pengabdian masyarakat ini merupakan pelatihan, yaitu Pelatihan Analisis Regresi untuk Meningkatkan Penelitian Guru di SMK Informatika Sumber Ilmu. Pelatihan ini dilaksanakan dengan baik yang dihadiri oleh 15 guru termasuk Kepala SMK Informatika Sumber Ilmu
PEMANFAATAN SAMPAH BEKAS BOTOL PLASTIK SEBAGAI BAHAN KURSI UNTUK AKTIVITAS SERVICE LEARNING MATA KULIAH CREATIVE PRENEURSHIP
Authors: Sengkey Shania Stacey , Sutiono Devina Rosy , Gunawan Jennifer , Kusumarini Yusita
Published: August 2020

Sampah yang menggunung merupakan salah satu masalah terbesar di perkotaan. Sementara itu, masalah perubahan iklim yang ekstrim dipengaruhi oleh penggunaan plastik yang berlebihan, seperti sampah botol minuman yang sangat sering dijumpai. Penggunaan botol plastik sangat memudahkan masyarakat, terutama dengan aktivitas masyarakat yang tinggi, botol plastik dapat langsung dibuang usai digunakan, sehingga dengan penggunaan botol plastik yang sangat banyak, maka jumlah sampah plastik yang dihasilkan juga sangat besar. Berangkat dari permasalahan tersebut, maka muncul suatu ide untuk mendaur ulang sampah bekas botol plastik dengan melibatkan mahasiswa serta pelaku UKM, dengan metode service learning dalam mata kuliah Creativepreneurship. Hasil dari aktivitas pembelajaran ini adalah furnitur kursi yang dudukannya terbuat dari sampah bekas botol plastik
Microstructure Characterization and Mechanical Properties of an AM60B Magnesium Alloy Sheet Prepared by the Double‐Pass High Strain Rate Rolling with Gradient Cooling
Authors: Zhang Xuxing , Xu Yan , Li Wei , Yan Zewen , Hu Penghong , Liu Xiaoke
Published: August 2020

AM60B magnesium alloy sheets with excellent mechanical properties are prepared by a double‐pass high strain rate rolling (HSRR) with gradient cooling from 370 to 340 °C. A bimodal lamellar structure, consisting of fine dynamically recrystallized grains, shear bands and fine precipitates, is obtained after the second‐pass HSRR. Formation mechanisms of shear bands are studied in depth. The results show that the formation of shear bands are closely related to the high‐density intersected twin lamellae, boundaries of initial coarse grains and the extensive dynamic recrystallization (DRX), respectively. It is also clarified that the HSRR process of the coarse grained AM60B alloy is dominated in succession by the twinning deformation stage and the following shear bands flow stage. Dynamic precipitation behavior is induced in the double‐pass HSRR process. The DRX is promoted by fine precipitates, resulting in local refinement of the HSRR'ed microstructure. Moreover, the weak basal texture is obtained with peak intensity less than 10. The high‐density twins, DRX and shear bands are suggested as main causes for the basal texture weakening. An outstanding matching between tensile strength and ductility at room temperature are obtained owing to the bimodal lamellar structure and the weakened basal texture.
Toward Rapid‐Charging Sodium‐Ion Batteries using Hybrid‐Phase Molybdenum Sulfide Selenide‐Based Anodes
Authors: Huang Yongxin , Wang Ziheng , Guan Minrong , Wu Feng , Chen Renjie
Published: August 2020

To attain both high energy density and power density in sodium‐ion (Na+) batteries, the reaction kinetics and structural stability of anodes should be improved by materials optimization. In this work, few‐layered molybdenum sulfide selenide (MoSSe) consisting of a mixture of 1T and 2H phases is designed to provide high ionic/electrical conductivities, low Na+ diffusion barrier, and stable Na+ storage. Reduced graphene oxide (rGO) is used as a conductive matrix to form 3D electron transfer paths. The resulting MoSSe@rGO anode exhibits high capacity and rate performance in both organic and solid‐state electrolytes. The ultrafast Na+ storage kinetics of the MoSSe@rGO anode is attributed to the surface‐dominant reaction process and broad Na+ channels. In situ and ex situ measurements are conducted to reveal the Na+ storage process in MoSSe@rGO. It is found that the MoS and MoSe bonds effectively limit the dissolution of the active materials. The favorable Na+ storage kinetics of the MoSSe@rGO electrode are ascribed to its low adsorption energy of −1.997 eV and low diffusion barrier of 0.087 eV. These results reveal that anion doping of metal sulfides is a feasible strategy to develop sodium‐ion batteries with high energy and power densities and long life‐span.