Results 41 to 50 of about 38,232 (264)

Collective spatial keyword querying [PDF]

Proceedings of the 2011 ACM SIGMOD International Conference on Management of data, 2011
With the proliferation of geo-positioning and geo-tagging, spatial web objects that possess both a geographical location and a textual description are gaining in prevalence, and spatial keyword queries that exploit both location and textual description are gaining in prominence.
Xin Cao 0001, Gao Cong, Christian S. Jensen, Beng Chin Ooi   +3 more
openaire   +1 more source

On Nearby-Fit Spatial Keyword Queries [PDF]

IEEE Transactions on Knowledge and Data Engineering, 2020
Geo-textual data is ubiquitous nowadays, where each object has a location and is associated with some keywords. Many types of queries based on geo-textual data, termed as spatial keyword queries , have been proposed, and are to find optimal object(s) in terms of both its (their) location(s) and keywords.
Victor Junqiu Wei, Raymond Chi-Wing Wong, Cheng Long 0001, Pan Hui 0001   +3 more
openaire   +3 more sources

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

FEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

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

PeerJ 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, Aisha Almaalwy, Nasser Allheeib, Abdulaziz Alajaji, Mohammed Almukaynizi, Yazeed Alabdulkarim   +5 more
doaj   +2 more sources

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

GSA: node failures tolerent spatial window query processing algorithm in wireless sensor networks

Tongxin xuebao, 2008
A node failures tolerent spatial window query processing algorithm called GSA was proposed. The grid size parameter was studied and a grid-based data collection schedule scheme to avoid the message collisions in the process of data collection was ...
LIU Liang, QIN Xiao-lin, DAI Hua, SHEN Jia-jia   +3 more
doaj  

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

ANALISA KECEPATAN SPATIAL QUERY DATA SATELIT PADA BEBERAPA STORAGE ENGINE MYSQL DATABASE

Matrix: Jurnal Manajemen Teknologi dan Informatika, 2016
Penerapan spatial database untuk data satellite remote sensing, membutuhkan struktur data yang memungkinkan proses spatial query dilakukan dengan kecepatan tinggi, oleh karena volume data satelit biasanya sangat besar.
I Ketut Swardika
doaj