Results 31 to 40 of about 3,483,185 (288)

Outdoor location scheme with fingerprinting based on machine learning of mobile cellular network

Dianxin kexue, 2021
The positioning scheme based on mobile cellular network technology is one of the important technical approaches to provide network optimization, emergency rescue, police patrol and location services.The traditional positioning scheme based on cell base ...
Zhichao ZHOU, Yi FENG, Xiaohan XIA, Yuyao FENG, Chao CAI, Jiahui QIU, Lihui YANG, Yunxiao WU   +7 more
doaj  

Techno-Economic-Environmental Assessment of Stand-alone Hybrid Renewable Energy System for Different Batteries using HOMER-Pro [PDF]

International Journal of Mathematical, Engineering and Management Sciences
The whole world is now widely using green energy compared to fossil because of the depletion of fossil fuels, the rising temperature of the earth, and changing weather conditions, all these things are becoming a big threat to the life of the earth.
Abhishek Solanki, Poonam Singh, Manjaree Pandit, Yashwant Sawle, Majed A. Alotaibi, Hasmat Malik, Fausto Pedro García Márquez, Asyraf Afthanorhan   +7 more
doaj   +1 more source

Study of Grid in Two Banna'i Inscriptions of Goharshad Mosque and Its Application in Designing the Letters [PDF]

نگره, 2020
Writing system has been evolved during several centuries and through several stages, each stage requiring decades and hundreds of years. The most complete level of a writing system is the alphabetic writing system.
abdolreza chareie, Sepideh Nosratilialemani   +1 more
doaj   +1 more source

Grid Forming Converters in Renewable Energy Sources Dominated Power Grid: Control Strategy, Stability, Application, and Challenges

Journal of Modern Power Systems and Clean Energy, 2021
—— The renewable energy sources (RESs) dominated power grid is an envisaged infrastructure of the future power system, where the commonly used grid following (GFL) control for grid-tied converters suffers from lacking grid support capa‐ bility, low ...
Hao-Bo Zhang, W. Xiang, Wei-Xing Lin, Jinyu Wen   +3 more
semanticscholar   +1 more source

Developing of Digital Terrain Model in Civil 3D for calculating the volumes for the Kelmend Landfill [PDF]

Micro, Macro & Mezzo Geoinformation, 2014
The Republic of Kosovo is a famous place with real underground. Along with rich mineral exploitation great importance to the management of mining waste which remain as a result of the processing of minerals.
Edon MALIQI, Edmond HAJRIZI, Gani MALIQI, Abdurrahman KULETA   +3 more
doaj  

A Novel QoS-Awared Grid Routing Protocol in the Sensing Layer of Internet of Vehicles Based on Reinforcement Learning

IEEE Access, 2019
This paper proposes a novel Quality of Service (QoS) grid routing protocol in Wireless Multimedia Sensor Networks (WMSN) based on reinforcement learning to guarantee Quality of Service in WMSN based on the sensing layer of the Internet of Vehicles (IoV).
Denghui Wang, Qingmiao Zhang, Jian Liu, Dezhong Yao   +3 more
doaj   +1 more source

Digital Twin Technology for Renewable Energy, Smart Grids, Energy Storage and Vehicle‐to‐Grid Integration: Advancements, Applications, Key Players, Challenges and Future Perspectives in Modernising Sustainable Grids

IET Smart Grid
To address the challenges faced by modern power systems—such as efficiency, dynamics, reliability, control, stability, economy and planning—significant efforts have been made to develop advanced techniques, tools and scientific innovations across various
A. Al-Shetwi, I. Atawi, M. El-Hameed, Ahmad Abuelrub   +3 more
semanticscholar   +1 more source

Comparative Study of Ramp-Rate Control Algorithms for PV with Energy Storage Systems

Energies, 2019
The high variability of solar irradiance, originated by moving clouds, causes fluctuations in Photovoltaic (PV) power generation, and can negatively impact the grid stability.
João Martins, Sergiu Spataru, Dezso Sera, Daniel-Ioan Stroe, Abderezak Lashab   +4 more
doaj   +1 more source

Digital Trade Feature Map: A New Method for Visualization and Analysis of Spatial Patterns in Bilateral Trade

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, Changqing Song, Changxiu Cheng, Shi Shen, Peichao Gao, Ting Zhang, Xiaoqiang Chen, Yuanhui Wang, Changjun Wan   +8 more
doaj   +1 more source

Frequency Stability of Synchronous Machines and Grid-Forming Power Converters [PDF]

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020
An inevitable consequence of the global power system transition toward nearly 100% renewable-based generation is the loss of conventional bulk generation by synchronous machines (SMs), their inertia, and accompanying frequency- and voltage-control ...
A. Tayyebi, Dominic Gross, Adolfo Anta, Friederich Kupzog, F. Dörfler   +4 more
semanticscholar   +1 more source