نتایج جستجو برای: hourly loadforecast
تعداد نتایج: 9213 فیلتر نتایج به سال:
Stochastic models that estimate the ground-level ozone concentrations in air at an urban and rural sampling points in South-eastern Spain have been developed. Studies of temporal series of data, spectral analyses of temporal series and ARIMA models have been used. The ARIMA model (1,0,0) x (1,0,1)24 satisfactorily predicts hourly ozone concentrations in the urban area. The ARIMA (2,1,1) x (0,1,...
While many surface foraging seabirds ingest plastic, the spatial overlap of these far-ranging predators with debris aggregations at-sea is poorly understood. We surveyed concurrent distributions of marine birds and debris along a 4400 km cruise track within a debris accumulation area in the North East Pacific Ocean using line and strip transect methods. Analysis of debris and bird distributions...
A 54-year-old male clerical worker was admitted to the unit on May 27, 1971, with intractable pulmonary oedema secondary to aortic regurgitation associated with bacterial endocarditis. Five years previously he had undergone a homograft valve replacement for calcine aortic stenosis. His treatment on admission consisted of cephaloridine 1 g 6-hourly intravenously, digoxin 0.25 mg 8hourly, frusemi...
BACKGROUND Typically, little consideration is given to the allocation of indirect costs (overheads and capital) to hospital services, compared to the allocation of direct costs. Weighted service allocation is believed to provide the most accurate indirect cost estimation, but the method is time consuming. OBJECTIVE To determine whether hourly rate, inpatient day, and marginal mark-up allocati...
A new short-term probabilistic forecasting method is proposed to predict the probability density function of the hourly active power generated by a photovoltaic system. Firstly, the probability density function of the hourly clearness index is forecasted making use of a Bayesian auto regressive time series model; the model takes into account the dependence of the solar radiation on some meteoro...
The authors argue that the strength of the relationship between income and happiness can be influenced by exposure to organizational practices, such as being paid by the hour, that promote an economic evaluation of time use. Using cross-sectional data from the United States, two studies found that income was more strongly associated with happiness for individuals paid by the hour compared to th...
The coefficients of linear regression lines fit to 1D model values of broadband surface absorptance T and top-ofatmosphere albedo " indicate the impact of clouds on atmospheric absorptance a. It is argued here that these coefficients cannot be compared directly to corresponding values for hourly observed data. This is because 1 " T = a for 1D models, but not for hourly observations. A 3D Monte ...
The reliable simulation of gross primary productivity (GPP) at various spatial and temporal scales is of significance to quantifying the net exchange of carbon between terrestrial ecosystems and the atmosphere. This study aimed to verify the ability of a nonlinear two-leaf model (TL-LUEn), a linear two-leaf model (TL-LUE), and a big-leaf light use efficiency model (MOD17) to simulate GPP at hal...
A novel solution to the estimation of catchment rainfall at a sub-hourly resolution from measured streamflow is introduced and evaluated for two basins with markedly different flow pathways and rainfall regimes. It combines a continuous-time transfer function model with regularised derivative estimates obtained using a recursive method with capacity for handling missing data. The method has gen...
In this paper, in order to investigate the effects of photovoltaic system introduction to detached houses in Japan, two kinds of works were done. Firstly, the hourly generation amount of a 4.2kW photovoltaic system were simulated in 46 cities to investigate the potential of the system in different regions in Japan using a simulation model of photovoltaic system. Secondly, based on the simulated...
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