This paper investigates the impacts of assimilating measurements of different state variables, which can be potentially available from various observational platforms, on the cycled analysis and short-range forecast of supercell thunderstorms by performing a set of observing system simulation experiments (OSSEs) using a storm-scale three-dimensional variational data assimilation (3DVAR) method....

Relying on its partisan principles and values, the Ba’athist regime– the period when Saddam Hussein was in charge in Iraq– sought a powerful government. Not respecting and believing in ethnical and sectarian differences and seeking the realization of national unity, Saddam tried to regulate security policies in a way in which he could assimilate the differing Iraqi society, using the policies o...

Sequential categorization of perceptual stimuli typically shows contrast from one trial to the next. Using familiar categories of animals and faces, contrast effects were dissociated from assimilation effects. Two independent main effects were observed: contrast to the preceding stimulus, and assimilation to the previous response. It is argued that contrast and assimilation may reflect differen...

The relative importance of contrast and assimilation for determining the perceived brightness was estimated. Assimilation decreased when a test spot had such a binocular disparity that the spot and its background appeared on different depth planes respectively. However, contrast was not affected by the binocular depth cue. These results indicate that the cortex takes an important role in assimi...

T paper extends our previous studies on the assimilation of Internet-based e-business innovations by firms in an international setting. Drawing upon theories on the process and contexts of technology diffusion, we develop an integrative model to examine three assimilation stages: initiation→ adoption→ routinization. The model features technological, organizational, and environmental contexts as...

Soil moisture is an important environmental variable that impacts military operations and weapons systems. Accurate and timely forecasts of soil moisture at appropriate spatial scales, therefore, are important for mission planning. We present an application of a \ soil moisture data assimilation system to military trafficability assessment. The data assimilation system combines hillslope-scale ...

Data Assimilation is a methodological framework used in environmental sciences to perform forecasts with complex systems such as meteorological, oceanographic and air quality models. Data Assimilation requires the resolution of a system with three components: one describing the temporal evolution of the state vector, one coupling the observations and the state vector, and one defining the initi...

The assimilation of official advisory minimum sea level pressure observations has been developed and tested in the National Centers for Environmental Prediction (NCEP) Global Data Assimilation System (GDAS) to address forecaster concerns regarding some tropical systems being far too weak in operational Global Forecast System (GFS) analyses. The assimilation of these observations has been operat...