Phone
XGM2019e is a combined global gravity field model represented by spheroidal harmonics up to degree and order (d/o) 5399, corresponding to a spatial resolution of 2′ (~ 4 km). As data sources, it includes the satellite model GOCO06s in the longer wavelength range up to d/o 300 combined with a ground gravity grid which also
1 Introduction Over a period of 15 years, the Gravity Recovery And Climate Experiment (GRACE) satellite mission was used to observe the Earth''s mean and time-variable gravity field with
Validation of Spatial Prediction Models for Landslide Susceptibility Mapping by Considering Structural Similarity. Results show that the FR model outperforms the CF model in producing a landslide susceptibility map in the study area, demonstrating its promise in validating different landslide susceptibility maps.
In this paper, a spatial mode-based calibration (SMoC) model for calibrating forecast precipitation fields from NWP models is presented. We aim to produce calibrated ensemble forecasts that are of high quality at both grid-cell and field scales, and crucially, with a correct spatial structure.
We design a novel spatiotemporal deep learning model for the ST-PEFs. The model consists of a temporal component and a spatial component. To the best of our knowledge, this is the first work that make traffic flow prediction based on potential energy fields. Experimental results on real-world traffic datasets show the effectiveness of our model
One of the emerging energy storage systems is gravity energy storage (GES), which has recently gained attention due to its high efficiency, reliability, and cost-effectiveness. This paper proposes a novel analytical and numerical investigation of the structural behavior and flow characteristics of the GES system under various operating
Spatial interaction models describe and predict spatial flows of people, commodities, capital and information. They are one of the oldest and most widely used of all social science models. This chapter provides a coherent state-of-the-art overview of the field that has witnessed the progression from gravity models to entropy maximising and
Mechanical energy storage systems, such as pumped hydro storage [28], and electrochemical energy storage technologies [29] hold great significance in the progression of renewable energy. Currently, pumped hydro energy storage (PHES) dominates ES technologies, with ∼95 % of the global storage capacity [ 30 ].
Power energy storage technology provides an important means to address this contradiction, among which gravity energy storage technology has become a pertinent
Though these models have the advantages on solving interaction between two physical fields, it is difficult to deal with complex multi-fields problems. For example, thermal runaway is a typical thermal-electrochemical-mechanical (TECM) problem, which can be caused by redox reaction chemical heat, ohmic heat, lithium-ion diffusion
namic nature of gravity energy storage (GES) is emerging in the field of mechanical energy storage, over pumped hydro. However, GES costs vary geospatially, specifically
The Gravity Recovery And Climate Experiment (GRACE) satellite mission recorded temporal variations in the Earth''s gravity field, which are then converted to Total Water Storage Change (TWSC
This paper presents a novel investigation of different design features of gravity energy storage systems. A theoretical model was developed using MATLAB
XGM2019e is a combined global gravity field model represented by spheroidal harmonics up to degree and order (d/o) 5399, corresponding to a spatial resolution of 2′ (~ 4 km). As data sources, it includes the satellite model GOCO06s in the longer wavelength range up to d/o 300 combined with a ground gravity grid which also
1. Introduction In the global carbon cycle, soil organic carbon (SOC) is the largest terrestrial carbon reservoir, which accounts for approximately 50–80% of the total terrestrial carbon, contains more than three times as much as the atmosphere or vegetation (Post et al., 1990), and determines a landscape''s carbon source/sink ability (Lal, 2004).
The aim of this paper is to provide a physical resource-based dynamic simulator forecast model of a hybrid PV/gravity energy storage connected to the grid
Exploring land use change is crucial to planning land space scientifically in a region. Taking the ecological conservation area (ECA) in western Beijing as the study area, we employ ArcGIS 10.2,
We present high-quality gravity field models (GFMs) from Swarm data that constitute an alternative and independent source of gravimetric data, which could help alleviate the consequences of the 10-month gap between
bility in cities. For example, the gravity model analogizes the traffic flow between two locations as gravity that is proportional to the masses (populations) and inversely pro-portional to the distance between the two locations [11]. The radiation law extends the gravity model through modeling human mobility as radiation and absorption
Exploring land use change is crucial to planning land space scientifically in a region. Taking the ecological conservation area (ECA) in western Beijing as the study area, we employ ArcGIS 10.2, landscape pattern index and multiple mathematical statistics to explore the temporal and spatial variation of land use from 2000 to 2020. Patch
One of the challenges in site-specific phosphorus (P) management is the substantial spatial variability in plant available P across fields. To overcome this barrier, emerging sensing, data fusion, and spatial predictive modeling approaches are needed to accurately reveal the spatial heterogeneity of P. Seven spatially variable fields located
Traffic flow prediction is a fundamental problem in spatiotemporal data mining. Most of the existing studies focuses on designing statistical models to fit historical traffic data, which are purely data-driven approaches and fail to reveal the underlying mechanisms of urban traffic. To address this issue, we propose the spatiotemporal
An accurate estimation of soil organic matter (SOM) content for spatial non-point prediction is an important driving force for the agricultural carbon cycle and sustainable productivity. This study proposed a hybrid
Based on the type of blocks, GES technology can be divided into GES technology using a single giant block (Giant monolithic GES, G-GES) and GES technology using several standardized blocks (Modular-gravity energy storage, M-GES), as shown in Fig. 2.The use of modular weights for gravity energy storage power plants has great
Author: Dr. Jean-Paul Rodrigue. A spatial interaction is a realized flow of passengers or freight between an origin and a destination. It is a transport demand / supply relationship expressed over a geographical space. 1. Conditions for Spatial Flows. Estimating flows between locations is a methodology of relevance to transportation.
In the gravity model it is assumed that the probability that a customer patronizes a facility is proportional to the facility''s attractiveness and to a distance decay function. Before the paper by Drezner et al. ( 2020 ), most competitive location papers assumed that the distance decay function is the same for all facilities, and concentrated
The validity of this bias estimation method is demonstrated both by a simulation test and by the evaluation of the airborne data in comparison to the SATOP
In the case of Swarm, the monthly gravity fields are limited to spherical harmonic degree and order (d/o) of about 12,
With the advancement of GPS and remote sensing technologies, large amounts of geospatial data are being collected from various domains, driving the need for effective and efficient prediction methods. Given spatial data samples with explanatory features and targeted responses (categorical or continuous) at a set of locations, the
An accurate estimation of soil organic matter (SOM) content for spatial non-point prediction is an important driving force for the agricultural carbon cycle and sustainable productivity. This study proposed a hybrid geostatistical method of extreme learning machine-ordinary kriging (ELMOK), to predict the spatial variability of the SOM content. To assess the
A novel method based on fuzzy logic to evaluate the storage and backup systems in determining the optimal size of a hybrid renewable energy system. Sayyed Mostafa Mahmoudi, Akbar Maleki, Dariush Rezaei Ochbelagh. Article
In geodesy, a global model is an approximation of the gravity field of the Earth. It consists of the gravitational part according to Newton''s law of attraction between masses and of the centrifugal part due to the rotation of the Earth. Such a model is a mathematical function which allows to compute different functionals of the gravity field
The Research Repository @ WVU
Spatial resolution of such models reaches up to ~9 km in EGM2008 (Pavlis et al. 2012) and EIGEN-6C4 (Förste et al. 2014) which are prominent examples of high-resolution combined global gravity field models. Combined global
In this paper, we propose a methodology for validating landslide susceptibility results in the Pinggu district (Beijing, China). A landslide inventory including 169 landslides was prepared, and eight factors
Fig. 4 presents the studied system which consists of a hybrid photovoltaic installation and a large-scale gravity energy storage, in addition to the residential load and the electrical grid. PV solar modules are connected to
Given the spatial resolution of ~300 km in Gravity Recovery and Climate Experiment (GRACE) measurements, accurately quantifying mass variations at smaller
A novel spatial-temporal prediction model for PV power generation, DAE-GASF-CNN, is proposed. The model takes PV spatial-temporal data as input. The reduced-dimensional PV spatial-temporal data are encoded using DAE. The historical power data are reconstructed to reduce the influence of contaminated data on the prediction results.
© CopyRight 2002-2024, BSNERGY, Inc.All Rights Reserved. sitemap