Results 21 to 30 of about 10,212,381 (290)

A Multiresolution Vector Data Compression Algorithm Based on Space Division

ISPRS International Journal of Geo-Information, 2020
Vector data compression can significantly improve efficiency of geospatial data management, visualization and data transmission over internet. Existing compression methods are either based on information theory for lossless compression mainly or based on
Dongge Liu, Tao Wang, Xiaojuan Li, Yeqing Ni, Yanping Li, Zhao Jin   +5 more
doaj   +1 more source

Geo-Visualization of Spatial Occupancy on Smart Campus Using Wi-Fi Connection Log Data

ISPRS International Journal of Geo-Information, 2023
As a typical and special type of urban setting, the university campus usually faces similar challenges as cities raised by high-density inhabitants. The smart campus has been introduced based on the smart city, as concepts, technologies, and solutions to
Zihao Zhao, Tao Wang, Yiru Zhang, Zixiang Wang, Ruixuan Geng   +4 more
doaj   +1 more source

A Control Unit for Emotional Conversation Generation

IEEE Access, 2020
Emotional conversation generation model predicts the response according to the current words and the emotional words. However, the researchers only dedicated to adding more emotional words in the conversation generation model to retain the taste of chat ...
Zhiqiang Ma, Rui Yang, Baoxiang Du, Yan Chen   +3 more
doaj   +1 more source

An End-to-End Framework Based on Vision-Language Fusion for Remote Sensing Cross-Modal Text-Image Retrieval

Mathematics, 2023
Remote sensing cross-modal text-image retrieval (RSCTIR) has recently attracted extensive attention due to its advantages of fast extraction of remote sensing image information and flexible human–computer interaction.
Liu He, Shuyan Liu, Ran An, Yudong Zhuo, Jian Tao   +4 more
doaj   +1 more source

Recent Progress of Earth Observation Satellites in China

Kongjian kexue xuebao
Currently, China has 32 Earth observation satellites in orbit. The satellites can provide various data such as optical, multispectral, infrared, and radar.
HUANG Shusong, QI Wenping, ZHANG Shuai, XIA Tian, WANG Jingqiao, ZENG Yong   +5 more
doaj   +1 more source

Spatial and Temporal Interaction Coupling of Digital Economy, New-Type Urbanization and Land Ecology and Spatial Effects Identification: A Study of the Yangtze River Delta

Land, 2023
In the digital era, the contradiction between regional urban development and land ecological protection is still prominent. Clarifying the relationship and internal interaction logic among digital economy (DE), new-type urbanization (NU), and land ...
Yuqi Zhu, Siwei Shen, Linyu Du, Jun Fu, Jian Zou, Lina Peng, Rui Ding   +6 more
doaj   +1 more source

Robust regularized singular value decomposition with application to mortality data [PDF]

, 2013
We develop a robust regularized singular value decomposition (RobRSVD) method for analyzing two-way functional data. The research is motivated by the application of modeling human mortality as a smooth two-way function of age group and year.
Huang, Jianhua Z., Shen, Haipeng, Zhang, Lingsong   +2 more
core   +4 more sources

Radiometric Cross-Calibration and Performance Analysis of HJ-2A/2B 16m-MSI Using Landsat-8/9 OLI with Spectral-Angle Difference Correction

Remote Sensing
The Huanjing-2A/2B (HJ-2A/2B) satellites are China’s next-generation environmental monitoring satellites, equipped with four visible light wide-swath charge-coupled device (CCD) sensors. These sensors enable the acquisition of 16-m multispectral imagery (
Jian Zeng, Hang Zhao, Yongfang Su, Qiongqiong Lan, Qijin Han, Xuewen Zhang, Xinmeng Wang, Zhaopeng Xu, Zhiheng Hu, Xiaozheng Du, Bopeng Yang   +10 more
doaj   +1 more source

Study on the Evolution and Resilience of Rail Transit Time Networks—Evidence from China

Applied Sciences, 2022
In the network operation and management of rail transit systems, the occurrence of unexpected events causes damage to the network structure, further hindering regional accessibility performance and the function of the system.
Rui Ding, Linyu Du, Yiming Du, Jun Fu, Yuqi Zhu, Yilin Zhang, Lina Peng   +6 more
doaj   +1 more source

CosmoDM and its application to Pan-STARRS data

, 2015
The Cosmology Data Management system (CosmoDM) is an automated and flexible data management system for the processing and calibration of data from optical photometric surveys.
Desai, S., Henderson, R., Kummel, M., Mohr, J. J., Paech, K., Wetzstein, M.   +5 more
core   +1 more source