Real-time simulation of grassland, especially the dynamic grassland under the effect of external forces such as wind is an important research topic in photorealistic simulation of natural scenes. It is also a challenging problem due to the huge number of grass blades. In this paper we put forward a method to represent the large area of dynamic grass realistically in real-time. In the method, we...

This paper presents first steps toward an adaptive lidar data processing technique crucial for lidarassisted control in wind turbines. The prediction time and the quality of the wind preview from lidar measurements depend on several factors and are not constant. If the data processing is not continually adjusted, the benefit of lidar-assisted control cannot be fully exploited or can even result...

Measurements of the neutral wind in the polar F-region from Dynamics Explorer-2 (DE-2) have been used to illustrate asymmetries in the Northern hemisphere neutral circulation that are dependent on the sign of the By (East-West) component of the interplanetary magnetic field (IMF). Individual DE-2 orbits and averaged data sets from different Universal times are presented. The data are categorize...

Studies reporting the findings of exposure to crystalline silica dust during concrete finishing in construction settings are scarce due to the dynamic nature of the activity and the existence of many confounding factors. This study was initiated to explore the issue. A total of 49 personal respirable dust samples were collected during concrete finishing while workers used hand-held grinders. On...

Spring-summer winds from the south move moist air from the Gulf of Mexico to the Great Plains. Rainfall in the growing season sustains prairie grasses that keep large dunes in the Nebraska Sand Hills immobile. Longitudinal dunes built during the Medieval Warm Period (800 to 1000 years before the present) record the last major period of sand mobility. These dunes are oriented NW-SE and are compo...

This work provides a new application of numerical pseudo-random simulation of satellite active sensor imagery ([1] and [2]), which allows a greater freedom to introduce complex hydrodynamic mechanisms compared to the traditional spectral analytical procedure. After previous works [3] and [4] on the basic methodology, which mainly concentrated on tilting and Doppler shift effects, the possibilit...

Two ten-members ensemble experiments using a coupled ocean-atmosphere general circulation model are performed to study the dynamical response to a strong westerly wind event (WWE) when the tropical Pacific has initial conditions favourable to the development of a warm event. In the reference ensemble (CREF), no wind perturbation is introduced, whereas a strong westerly wind event anomaly is int...

The modern European climatic regime is peculiar, due to its unitary winter but diverse summer climates and a pronounced Mediterranean climate in the south. However, little is known on its evolution in the deep time. Here we reconstruct the European summer climate conditions in the Tortonian (11.62-7.246 Ma) using plant fossil assemblages from 75 well-dated sites across Europe. Our results clear...

The width of the cusp region is an indicator of the strength of the merging process and the degree of opening of the magnetosphere. During three years, the Magion-4 satellite, as part of the Interball project, has collected a unique data set of cusp-like plasma observations in middle and high altitudes. For a comparison of highand low-altitude cusp determination, we map our observations of cusp...

The heavy electrical power draw of electric arc furnaces (EAF) proposes them as prime candidates for economically viable decentralized grid operation, provided they are able to operate efficiently and flexibly in response and in anticipation of fluctuations in price and local renewable energy availability. For this purpose, we consider a hypothetical industrial micro-grid consisting of a wind p...