Results 61 to 70 of about 3,471,337 (333)

Coarse-to-Fine Spatial-Temporal Relationship Inference for Temporal Sentence Grounding

open access: yesIEEE Access, 2021
Temporal sentence grounding aims to ground a query sentence into a specific segment of the video. Previous methods follow the common equally-spaced frame selection mechanism for appearance and motion modeling, which fails to consider redundant and ...
Shanshan Qi   +3 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

An Efficient Top- $K$ Spatial Keyword Typicality and Semantic Query

open access: yesIEEE Access, 2019
Existing spatial keyword query processing models mainly consider the spatial proximity and text relevancy between spatial objects and spatial keyword query, which usually makes the top-k answer objects are similar to each other.
Xiaoyan Zhang   +4 more
doaj   +1 more source

Spatio-textual indexing for geographical search on the web [PDF]

open access: yes, 2005
Many web documents refer to specific geographic localities and many people include geographic context in queries to web search engines. Standard web search engines treat the geographical terms in the same way as other terms. This can result in failure
Joho, H.   +3 more
core   +4 more sources

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Top-k sentiment analysis over spatio-temporal data [PDF]

open access: yesPeerJ Computer Science
In recent years, social media has become much more popular to use to express people’s feelings in different forms. Social media such as X (i.e., Twitter) provides a huge amount of data to be analyzed by using sentiment analysis tools to examine the ...
Abdulaziz Almaslukh   +5 more
doaj   +2 more sources

An Algorithm for Data Reorganization in a Multi-dimensional Index [PDF]

open access: yes, 2012
In spatial databases, data are associated with spatial coordinates and are retrieved based on spatial proximity. A spatial database uses spatial indexes to optimize spatial queries.
Nair, Urvashi Samaresh
core   +1 more source

Topological queries in spatial databases

open access: yesProceedings of the fifteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Papadimitriou, CH., Suciu, D., Vianu, V.
openaire   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Accelerating spatial range queries [PDF]

open access: yesProceedings of the 16th International Conference on Extending Database Technology, 2013
It is increasingly common for domain scientists to use computational tools to build and simulate spatial models of the phenomena they are studying. The spatial models they build are more and more detailed as well as dense and are consequently difficult to manage with today's tools. A crucial problem when analyzing spatial models of increasing detail is
Alexandros Stougiannis   +3 more
openaire   +1 more source

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