Results 41 to 50 of about 1,155,403 (295)
Hybrid Spatial Data Model for Indoor Space: Combined Topology and Grid
ISPRS International Journal of Geo-Information, 2017 The construction and application of an indoor spatial data model is an important prerequisite to meet the requirements of diversified indoor spatial location services.
Zhiyong Lin +4 more
doaj +1 more source
ISPRS International Journal of Geo-Information, 2020 Product bilateral trade features can be organized and expressed in the Cartesian coordinate system by taking imports and exports as X and Y, which is similar to spatial visualization. Hence, geospatial expression and analysis methodologies can be applied
Sijing Ye +8 more
doaj +1 more source
Grid-Synchronization Stability of Converter-Based Resources—An Overview
IEEE Open Journal of Industry Applications, 2020 This paper presents an overview of the synchronization stability of converter-based resources under a wide range of grid conditions. The general grid-synchronization principles for grid-following and grid-forming modes are reviewed first. Then, the small-
Xiongfei Wang +5 more
semanticscholar +1 more source
A Review of Modeling, Management, and Applications of Grid-Connected Li-Ion Battery Storage Systems
IEEE Transactions on Smart Grid, 2022 The intermittency of renewable energy sources makes the use of energy storage systems (ESSs) indispensable in modern power grids for supply-demand balancing and reliability enhancement.
M. Rouholamini +8 more
semanticscholar +1 more source
2011 11th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing, 2011 The goal of the Grid Observatory project (GO) is to contribute to an experimental theory of large grid systems by integrating the collection of data on the behaviour of the flagship European Grid Infrastructure (EGI) and its users, the development of models, and an ontology for the domain knowledge.
Germain-Renaud C. +8 more
openaire +3 more sources
Grid Converters for Photovoltaic and Wind Power Systems
, 2011 About the Authors. Preface. Acknowledgements. 1 Introduction. 1.1 Wind Power Development. 1.2 Photovoltaic Power Development. 1.3 The Grid Converter The Key Element in Grid Integration of WT and PV Systems. 2 Photovoltaic Inverter Structures.
R. Teodorescu +2 more
semanticscholar +1 more source
Discrete Mathematics, 1998 The closed neighbourhood \(N[X]\) of a set \(X\) of vertices is the set of all vertices which are either in \(X\) or are adjacent to a vertex in \(X\). A vertex \(x\in X\) is redundant in \(X\) if \(N[X]=N[X-\{x\}]\); an irredundant set contains no redundant vertices. The lower irredundance number \(\text{ir}(G)\) of a graph \(G\) is the cardinality of
Odile Favoron, Joël Puech
openaire +3 more sources
Robot Path Planning Based on Improved A* Algorithm
Cybernetics and Information Technologies, 2015 Due to the characteristic that A* algorithm takes a long time when traversing an OPEN table and a CLOSED table, an improved method is proposed that is a new way of array storing in an OPEN table and a CLOSED table.
Peng Jiansheng, Huang Yiyong, Luo Guan
doaj +1 more source
The Effect of Answering in a Preferred Versus a Non-Preferred Survey Mode on Measurement
Survey Research Methods, 2014 Previous research has shown that offering respondents their preferred mode can increase response rates, but the effect of doing so on how respondents process and answer survey questions (i.e., measurement) is unclear.
Jolene Smyth +2 more
doaj +1 more source
Journal of Combinatorial Theory, Series B, 1989 We define graphs \(Y_ n\) such that none of these \(Y_ n\) has a minor isomorphic to \(K_ 8\) and for every number k and surface S not all of these graphs are in the completion of k-vertex extensions of graphs embeddable in S. This disproves a corresponding conjecture of \textit{N. Robertson} and \textit{P. D.
W. Wessel, D. G. Seese
openaire +3 more sources