Use of play analysis in ore deposit forecasting аnd prospecting

Play analysis was developed and is successfully used in oil and gas deposit prospecting. It is recommended for use in ore deposit forecasting and prospecting. Ore plays are deposits, mineral occurrences and prospects of common genesis, they are confined to a single structural and formational complex. Within one play, deposits are prospected and explored using the same technique; discovered deposits have similar technological ore properties. Geological/genetic and technological play uniformity simplifies their forecast assessment.

Infant and maternal engagement: A coding rubric for infant-mother free play analysis

This coding rubric was developed to assess 5-month-old infant free play interactions with their mothers.

What role did the Spanish flu play? Analysis of the death causes in Ekaterinburg 1917–1919

The Spanish flu pandemic of 1917–1920 killed, according to some researchers, up to 100 million people while others estimate lower numbers such as 20 million victims. The reason for this uncertainty is that data for a number of countries, including Russia, are rather rough estimates based on mortality rates from other parts of the world. This study analyzes the causes of death in the population of Еkaterinburg during the period of the Spanish pandemic to determine likely signs of the spread of influenza. Databases on the causes of death registered in the city’s parish registers were used as a source

Quantifying jump-specific loads in beach volleyball by an inertial measurement device

The ability to complete a large volume of high intensity jumps represents an important performance indicator in beach volleyball. Inertial measurement units are suitable tools to monitor those jump-specific loads but the applicability in beach volleyball lacks research. This study evaluates the accuracy of a commercially available inertial measurement device in beach volleyball for (i) jump count during match-play and (ii) jump height measurement under laboratory conditions. Jump count measures were compared to retrospective video analysis to determine precision and recall. Jump heights were referenced to three-dimensional motion analysis to determine typical errors of estimate, correlations and Bland-Altman statistics. Match-play analysis results in excellent precision (0.975) for a total of 439 jumps and recall values between 0.836–1.000 depending on jump type. Jump heights revealed good to excellent correlations for block (r = 0.81) and spike jumps (r = 0.90), with a mean bias of 2.61 and 7.69 cm, respectively. The device demonstrates good validity for measuring jump count as well as vertical displacement. Due to its potential for nearly real time feedback with constraints of limited resources, we assume that this device will have considerable benefits for quantifying jump-specific load in beach volleyball.

Semi-conventional play: definition, exploration strategy and the example of the Chalk Group in Denmark

Play analysis has been widely used in hydrocarbon exploration for decades with great success. In recent years, progress has also been made to describe reservoir properties of very low permeability reservoirs. However, comparatively little research has been done into play analysis for such reservoirs, which may lead to misleading estimates of their hydrocarbon potential. Here, the concept of a semi-conventional play is defined and characterised as having a reservoir of such low permeability that a hydrocarbon column can form down-dip of an effective dry trap. A new exploration approach is proposed for such plays, using the Chalk Group Play in the Danish North Sea as an example. It is suggested that together with the usual risk elements, a more detailed analysis of ‘charge’ is necessary, paying particular attention to identifying possible hydrocarbon entry points, palaeostructures and the maximum distance from these entry points that the hydrocarbons may have reached since they first entered the reservoir. The application of this novel approach for semi-conventional plays in mature basins can help unlock further resources in proximity of existing fields, and reduce the risk of failure in frontier exploration.