Results 91 to 100 of about 422,181 (302)

ANALYTICAL RESOURCES OF SPATIAL INDEX NUMBER: STATISTICAL EXPERIENCE AND ADVANTAGES OF ITS USING

open access: yes, 2018
In the article there is a historical aspect of spatial index number development, notably the development of theoretical conceptions establishing the possibility of using of the different calculating methods (on the base of means). There is an aggregation
Козлова, М. А., Kozlova, M.
core  

A Privacy‐Preserving Spatial Index for Spatial Query Processing

open access: yesWireless Communications and Mobile Computing, 2018
An increasing amount of active research is being conducted to protect the locations of mobile device users. Users must tune to more data than they would like to in order to hide their location. In particular, if a user requests a query over k NN, the number of objects the user must receive ...
Doohee Song, MoonBae Song, Kwangjin Park
openaire   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Neighbor link-based spatial index for k-nearest-neighbor queries in wireless systems

open access: yes, 2019
[[abstract]]In the wireless communication environments, k nearest neighbor (kNN) queries issued in the mobile device can find k spatial objects that are the nearest neighbors according to its current location.
沈俊宏;SHEN, JUN-HONG;陸清達;Lu, Ching-Ta;Chu, Hong-Ray;Chu, Hong-Ray
core  

A Sorting Approach to Indexing Spatial Data [PDF]

open access: yesInternational Journal of Shape Modeling, 2008
Spatial data is distinguished from conventional data by having extent. Therefore, spatial queries involve both the objects and the space that they occupy. The handling of queries that involve spatial data is facilitated by building an index on the data. The traditional role of the index is to sort the data, which means that it orders the data. However,
openaire   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

A proposed spatial index to prioritize damaged buildings for allocating USAR operations

open access: yes, 2017
A spatial index using fuzzy hierarchical analysis (FAHP) is proposed in this study for prioritizing damaged buildings in the allocation of search and rescue operations after the earthquake disaster.
Alireza A. Ardalan   +3 more
core   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang   +12 more
wiley   +1 more source

A multi-dimensional spatial index for the quantification of food insecurity

open access: yes, 2023
Food insecurity is a multifaceted problem. It is, in fact, one of the most significant concerns of the 21st century. According to the United Nations, nearly one in every three people, or 2.3 billion people worldwide, experienced a moderate to severe ...
Fuzail Dawood, Jan H. van Vuuren
core   +1 more source

A Skewed Spatial Index for Continuous Window Queries in the Wireless Broadcast Environments

open access: yes, 2013
[[abstract]]Location-based services (LBSs) via wireless data broadcast can provide a huge number of mobile clients for simultaneously accessing spatial data according to their current locations.
沈俊宏;Shen, Jun-Hong;陸清達;Lu, Ching-Ta;簡銘伸;Jian, Ming-Shen;黃天麒;Huang, Tien-Chi
core   +1 more source

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