An analysis of penalty kicks in elite football post 1997

The penalty kick in football is a seemingly simplistic play; however, it has increased in complexity since 1997 when the rules changed allowing goalkeepers to move laterally along their goal line before the ball was kicked. Prior to 1997 goalkeepers were required to remain still until the ball was struck. The objective of this study was to determine the importance of the penalty kick in the modern game of football. A retrospective study of the 2002, 2006 and 2010 World Cup and the 2000, 2004 and 2008 European Championship tournaments was carried out, assessing the importance of the penalty kick in match play and shootouts and the effect of the time of the game on the shooter's success rate. This study demonstrated the conversion rate of penalties was 73% in shootouts and 68% in match play. Significantly more penalties were awarded late in the game: twice as many penalties in the second half than the first and close to four times as many in the fourth quarter vs. the first. Teams awarded penalty kicks during match play won 52%, drew 30% and lost 18% of the time; chances of winning increased to 61% if the penalty was scored, but decreased to 29% if missed. Teams participating in either the World Cup or European Championship final match had roughly a 50% chance of being involved in a penalty shootout during the tournament. Penalty shots and their outcome significantly impact match results in post 1997 football.

Accurate estimation of isoelectric point of protein and peptide based on amino acid sequences

Motivation: In any macromolecular polyprotic system - for example protein, DNA or RNA - the isoelectric point - commonly referred to as the pI - can be defined as the point of singularity in a titration curve, corresponding to the solution pH value at which the net overall surface charge - and thus the electrophoretic mobility - of the ampholyte sums to zero. Different modern analytical biochemistry and proteomics methods depend on the isoelectric point as a principal feature for protein and peptide characterization. Protein separation by isoelectric point is a critical part of 2-D gel electrophoresis, a key precursor of proteomics, where discrete spots can be digested in-gel, and proteins subsequently identified by analytical mass spectrometry. Peptide fractionation according to their pI is also widely used in current proteomics sample preparation procedures previous to the LC-MS/MS analysis. Therefore accurate theoretical prediction of pI would expedite such analysis. While such pI calculation is widely used, it remains largely untested, motivating our efforts to benchmark pI prediction methods. Results: Using data from the database PIP-DB and one publically available dataset as our reference gold standard, we have undertaken the benchmarking of pI calculation methods. We find that methods vary in their accuracy and are highly sensitive to the choice of basis set. The machine-learning algorithms, especially the SVM-based algorithm, showed a superior performance when studying peptide mixtures. In general, learning-based pI prediction methods (such as Cofactor, SVM and Branca) require a large training dataset and their resulting performance will strongly depend of the quality of that data. In contrast with Iterative methods, machine-learning algorithms have the advantage of being able to add new features to improve the accuracy of prediction. Contact: yperez@ebi.ac.uk Availability and Implementation: The software and data are freely available at https://github.com/ypriverol/pIR. Supplementary information: Supplementary data are available at Bioinformatics online.

A piacorientáció hatása a vállalati versenyképességre = The Impact of Market Orientation on Competitiveness

A tanulmány a piacorientáció és a versenyképesség összefüggését elemzi egy átfogóbb koncepcionális modell keretében, amely a piacorientáció szervezeti előzményeire, a piacorientáció egyes dimenziói és a vállalati teljesítmény közötti kapcsolatra, valamint a környezetből származó bizonytalanság moderáló hatásaira fókuszál. Ahhoz, hogy növeljük a tanulmány érvényességét, az elemzés során olyan változókat kontrolláltunk, amelyekről úgy véltük, hogy a piacorientáció mellett szintén befolyásolhatják a vállalatok versenyképességét, mint például a vállalati stratégia, illetve néhány releváns vállalati jellemző. Az eredmények alapján megállapíthatjuk, hogy a piacorientáció pozitív vagy semleges hatással van a vállalati versenyképesség különböző indikátoraira. Kutatásunk tehát nem támasztotta alá egyes, a válságidőszakokban készült tanulmányok következtetéseit, amely szerint gazdasági válság időszakában a piacorientáció gátolja a vállalatokat abban, hogy megfelelően reagáljanak a környezetben bekövetkezett változásokra. A piacorientáció eltérő dimenzióinak szerepe ugyanakkor átértékelődik a környezetből fakadó bizonytalanság egyes típusainak eltérő mértékű erősödésével. ----- Abstract: The study investigates the association between market orientation and corporate competitiveness in frame of a wider conceptual model that focuses on the organisational antecedents of market orientation, the relationship between the dimensions of market orientation and corporate performance and the moderating role of environmental uncertainty. To increase the validity of our study, we controlled other variables that had also been expected to influence competitiveness such as corporate strategy and some relevant characteristics of companies. Based on the results we can conclude that the effects of market orientation on the different indicators of competitiveness are either positive or neutral. Our research did not support the conclusions of previous studies which stated that in times of economic crisis market orientation inhibits companies to react to the changes of the environment in an appropriate way. The importance of the dimensions of market orientation however can change due to the diverse extent to which the different kinds of environmental uncertainty intensify.

Seawater carbonate chemistry and calcification in the tropical urchin Echinometra viridis in a laboratory experiment

Atmospheric carbon dioxide (pCO2) has risen from approximately 280 to 400 ppm since the Industrial Revolution, due mainly to the combustion of fossil fuels, deforestation, and cement production. It is predicted to reach as high as 900 ppm by the end of this century. Ocean acidification resulting from the release of anthropogenic CO2 has been shown to impair the ability of some marine calcifiers to build their shells and skeletons. Here, we present the results of ocean acidification experiments designed to assess the effects of an increase in atmospheric pCO2 from ca. 448 to 827 ppm on calcification rates of the tropical urchin Echinometra viridis. Experiments were conducted under the urchin's winter (20 °C) and summer (30 °C) water temperatures in order to identify seasonal differences in the urchin's response to ocean acidification. The experiments reveal that calcification rates decreased for urchins reared under elevated pCO2, with the decline being more pronounced under wintertime temperatures than under summertime temperatures. These results indicate that the urchin E. viridis will be negatively impacted by CO2-induced ocean acidification that is predicted to occur by the end of this century. These results also suggest that impact of CO2-induced ocean acidification on urchin calcification will be more severe in the winter and in cooler waters.

Adaptación y validación de la versión española de la escala de evaluación de dolor en personas con demencia avanzada: PAINAD-Sp

Introducción: El dolor está considerado como un grave problema en el entorno residencial afectando entre un 49 y un 83% de los residentes. El proceso evolutivo de la enfermedad de Alzheimer puede conllevar dificultades de comunicación y comprensión de las escalas de evaluación de dolor, dificultando su evaluación y tratamiento. El objetivo principal de este estudio fue validar la versión espa˜nola del PAINAD (PAINAD-Sp) y evaluar su aplicabilidad en un Centro Gerontológico en Espa˜na. Material y métodos: Veinte usuarias diagnosticadas de demencia avanzada fueron observadas por 5 observadores con diferentes perfiles profesionales durante 5 min en 3 condiciones: reposo, durante actividad agradable y en situación de dolor. La PAINAD-Sp fue administrada simultáneamente a una escala analógica visual. Resultados: Los resultados muestran que el alfa de Cronbach se encontraba entre 0,467 y 0,827 (con una media de 0,692, que subía si el ítem de respiración se eliminaba). La fiabilidad interjueces variaba entre 0,587 y 0,956. La correlación entre la medida total en PAINAD-Sp y en una Escala Visual Analógica fue estadísticamente significativa (p < 0,05) en todas las medidas y variaba entre 0,517 y 0,868. Conclusiones: Los resultados del estudio muestran que la escala PAINAD-Sp es eficaz para medir el dolor en personas con demencia sin capacidad de comunicación. Esta escala puede ser usada por diferentes profesionales de la salud con poco entrenamiento y presenta una buena fiabilidad.

Enhanced microbial activity in carbon-rich pillow lavas, Ordovician, Great Britain and Ireland

Date of acceptance: 09/07/2015

Enhanced microbial activity in carbon-rich pillow lavas, Ordovician, Great Britain and Ireland

Date of acceptance: 09/07/2015

Enhanced microbial activity in carbon-rich pillow lavas, Ordovician, Great Britain and Ireland

Date of acceptance: 09/07/2015

Benthos activity, abundance and biomass in surface sediments off Morocco, Northwest Africa

Macro- and meiobenthic abundance and biomass as well as metabolic activity (respiration, ETS activity) have been studied along a transect ranging from 130 to 3000 m water depth off northern Morocco (35° N) during "Meteor" cruise No. 53 (1980). The distribution of chloroplastic pigment concentration (chlorophyll a, pheophytins) in the sediment has been investigated as a measure of sedimented primary organic matter. High chloroplastic pigment concentrations were found on the shelf and around the shelf break, but values declined rapidly between 200 and 600 m depth. Below 1200 m pigment concentrations remained at a relatively uniform low level. Macrobenthic abundance and biomass (wet weight) decreased with increasing water depth and with distance from the shore. Significant changes occurred between the shelf and upper slope and below 2000 m depth. Meiobenthic abundance and biomass (ash free dry weight) followed the same general pattern, but changes were found below 400 and 800 m depth. In the depth range of 1200 to 3000 m values differ only slightly. Meiofauna abundance and biomass show a good correlation with the sedimentary chloroplastic pigment concentrations. Respiratory activity of sediment cores, measured by a shipboard technique at ambient temperatures, decreased with water depth and shows a good correlation with the pigment concentrations. ETS activity was highest on the shelf and decreased with water depth, with significant changes between 200 and 400 m, and below 1200 m depth, respectively. Activity was generally highest in the top 5 cm of the sediment and was measurable, at all stations, down to 15 cm sediment depth. Shelf and upper slope stations exhibited a vertical distribution pattern of ETS activity in the sediment column, different from that of deeper stations. The importance of biological activity measurements as an estimate of productivity is discussed. To prove the thesis that differences in benthic abundance, biomass and activity reflect differences in pelagic surface primary production, in the case of the NW-African coast caused by different upwelling intensities, the values from 35° N were compared with data from 21° N (permanent upwelling activity) and 17° N (ca. 9 months upwelling per year). On the shelf and upper slope (< 500 m) hydrographical conditions (currents, internal waves) influence the deposition of organic matter and cause a biomass minimum between 200 and 400 m depth in some regions. But, in general, macrobenthic abundance and biomass increases with enhanced upwelling activity and reaches a maximum in the area off Cape Blanc (21° N). On the shelf and in the shelf break region meiofauna densities are higher at 35° N in comparison to 21° N; but in contrast to the decreasing meiofauna abundance with increasing water depth at 35° N, an abundance maximum between 400 and 1200 m depth is formed in the Cape Blanc region; this maximum coincides with the maximum of sedimentary chloroplastic pigment equivalents. The comparison of ETS activities between 35° N and 21° N shows on the shelf activity at 21° N is up to 14 times higher and on the slope 4-9 times higher, which demonstrates that benthic activity responds to the surface productivity regime.