WISK, a workload-aware learned index that combines spatial and keyword queries to efficiently retrieve objects. It integrates spatial and textual indexes and considers query workload information.

1 views • 17 slides

This document delves into the intricacies of Coordinated Beamforming (Co-BF) and MU-MIMO techniques in the context of IEEE 802.11-23/1998r0 standard. It explores the concept of nulling in Co-BF, handling more Rx antennas than streams, Zero-Forcing precoding to eliminate Multi-User Interference (MUI)

2 views • 22 slides

fMRI data analysis involves coregistration and spatial normalization to align functional and structural images, reduce variability, and prepare data for statistical analysis. Coregistration aligns images from different modalities within subjects, while spatial normalization achieves precise anatomic

3 views • 35 slides

Coregistration and Spatial Normalization are essential steps in fMRI data preprocessing to ensure accurate alignment of functional and structural images for further analysis. Coregistration involves aligning images from different modalities within the same individual, while spatial normalization aim

6 views • 42 slides

This paper introduces the Localised Adaptive Spatial-Temporal Graph Neural Network model, focusing on the importance of spatial-temporal data modeling in graph structures. The challenges of balancing spatial and temporal dependencies for accurate inference are addressed, along with the use of distri

3 views • 19 slides

Spatial data mining involves uncovering valuable patterns from extensive spatial datasets, offering insights into historical events, environmental phenomena, and predictive analytics. Examples range from analyzing disease outbreaks to predicting habitat suitability for endangered species. The applic

1 views • 20 slides

Cutting-edge research in 3D scene analysis focuses on sequenced predictions over points and regions for comprehensive spatial understanding. The approach involves contextual classification, overcoming limitations of classical graphical models through innovative inference machines that prioritize tra

0 views • 40 slides

This presentation by Xiaozhi Yu introduces the fundamentals of spatial database systems, covering topics such as spatial data types, relationships, system architecture, modeling, and organizing underlying spaces. It delves into the importance of integrating geometry into DBMS data models, spatial in

1 views • 30 slides

Spatial distortion artifacts in EPI sequences (BOLD or DWI) due to slow sampling rates in the phase encoding direction can be corrected using B0/spatial field mapping techniques. This correction requires obtaining field maps under the same B0 shimming conditions and with identical FoV and adjustment

0 views • 4 slides

Spatial analysis in GIS involves modeling geographic problems, processing data, and exploring results to understand spatial relationships, patterns, and suitability for various purposes. GIS tools offer unique capabilities for handling geographically referenced data, data entry, storage, manipulatio

1 views • 21 slides

Spatial reference systems play a crucial role in defining geographic parameters and coordinate systems for mapping. They consist of components like orientation, latitude, longitude, and elevation, which help in representing spatial properties on maps. Reference surfaces such as the Geoid and ellipso

3 views • 13 slides

The document discusses technical issues related to the SCS (Spatial Channel Sharing) operation in the IEEE 802.11be standard. It highlights inconsistencies in the standard regarding parameterized QoS requirements, mixing of traffic streams with different QoS needs, and challenges in prioritizing SCS

0 views • 15 slides

This document presents the Coordinated Spatial Reuse (CSR) procedure in IEEE 802.11-20/0410r4, focusing on the transmission schemes and necessary information for effective spatial reuse. It outlines the topology of CSR environments, acquisition of information for CSR, CSR capability announcement by

8 views • 23 slides

Explore spatial analysis techniques for efficient route planning, site selection, pattern identification, and value prediction in the context of spatial planning. Learn about surface modeling, relationships among features, and the importance of spatial modeling in addressing geographical problems.

0 views • 27 slides

Jet streams are strong, high-altitude air currents that flow in a narrow belt in the upper troposphere, influencing weather patterns and aviation. Discovered during World War II, jet streams have distinct properties, types, and an index cycle that affects atmospheric circulation globally.

2 views • 11 slides

A geographic information system (GIS) is a powerful tool for capturing, storing, analyzing, and presenting spatial data. This training program explores the fundamentals of GIS, including software and hardware components, data considerations, and the importance of people and policies in utilizing GIS

4 views • 16 slides

Explore the concepts of GIS data models including vector vs. raster, spatial relationships, spatial operations, and representation of real-world entities in a spatial database. Understand how spatial data models are used to manipulate spatially-referenced information and define the spatial location

1 views • 32 slides

Explore the concept of spatial autocorrelation, its implications in geostatistical analysis, and the importance of detecting and interpreting it correctly. Learn about auto-correlation, signal components, correlation significance, and measuring autocorrelation using tools like Moran's I. Gain insigh

0 views • 12 slides

Enhancing GIS practices in Samoa involves establishing a Samoa GIS User Group, improving spatial data management, developing a national spatial data infrastructure framework, and implementing GIS applications in various sectors like emergency response, public access, and natural resource management.

2 views • 12 slides

The document discusses various spatial relation switching requirements for uplink scenarios in the 3GPP NR RAN Plenary Meeting. It covers agreement points related to UL SRS, PUCCH, P-SRS, and DL-RS, defining delay requirements and known conditions for spatial relation switching. The agreements provi

0 views • 11 slides

The document discusses spatial stream allocation in IEEE 802.11-20 trigger frames, specifically focusing on the SS Allocation subfield. It explains how trigger frames allocate resources for TB PPDU transmissions and solicit User Info fields, detailing the RU Allocation and SS Allocation subfields. T

3 views • 15 slides

This content delves into the intricacies of temporal and spatial information models, covering concepts such as existence, presence, and spatiotemporal relationships. It explores how entities are identified, events are witnessed, and durations are defined within these models. The interplay between ti

3 views • 9 slides

This research focuses on efficiently estimating statistics over sub-sampled streams, particularly in the context of IP packet streams for traffic monitoring. Various types of sampling methods are explored, such as Bernoulli sampling, to compute key metrics like frequency moments, number of distinct

0 views • 22 slides

This study explores the use of complex time methods and chameleon scalar fields in understanding and modeling spatial extremes in hydrological and atmospheric systems. By transforming Lagrangian processes and introducing chameleon scalar fields, the research unveils new insights into the mechanism g

0 views • 9 slides

Professor Peter J. Hammer's testimony before the Michigan Civil Rights Commission sheds light on the historical lineage of spatial racism in Flint and Genesee County. The interaction between beliefs and institutions over time has shaped racial oppression, from slavery to current issues such as the F

0 views • 38 slides

Explore the integration of relational databases with QGIS to facilitate efficient spatial data analysis. Discover the importance of recognizing spatial relationships within data sets and the solutions to enhance QGIS for relational datasets. Overcome challenges and delve into the intersection and su

0 views • 25 slides

C++ streams play a crucial role in handling input/output operations by linking logical devices to physical ones. They provide a uniform interface for programmers to work with various devices efficiently. This article covers the basics of C++ streams, input/output streams, common functionalities like

0 views • 17 slides

Mapping spatial experiences in a small flat, this content describes pleasant and unpleasant places within the living space. It highlights favorite spots like a kitchen chair with a view, a cozy desk for work, and a room with enough space for activities. In contrast, it mentions bothersome areas like

0 views • 10 slides

The report provides insights into the activities and discussions at the EAHC-MSDIWG1 meeting held in Busan, ROK. It outlines the key agenda items, country reports on national MSDI, membership details, importance of MSDI, and trends in marine spatial data. The report emphasizes the significance of ma

0 views • 11 slides

Proposal discusses the suitability of MIMO for IMMW transmission under different scenarios. The analysis focuses on the number of spatial streams based on channel rank and quality, recommending dual-polarization for LOS paths supporting 2 spatial streams and spatial separation for larger devices sup

0 views • 16 slides

Detailed procedures for spatial CTI correction using Cu K? and Mn K? in XMM EPIC-pn detectors, including applying long-term CTI corrections, stacking event lists, extracting spectra, fitting Cu K line, and deriving spatial offsets. Examples show improvements in velocity space after corrections. Vali

0 views • 18 slides

In this study by Mikko Harju, Juuso Liesi, and Kai Virtanen from Aalto University, the focus is on spatial decision analysis for scenarios where decision alternatives have varying consequences across a geographical region. The research delves into the significance of spatial value functions in repre

0 views • 19 slides

The study explores the impact of ccNUMA and locality on Java 8 Streams, focusing on their complexity and implementation in real-time Big Data applications. It discusses the Java support for server computers in clusters, the use of streams for programming models, and considerations for extending stre

0 views • 22 slides

Engage in interactive English learning with topics covering asking for directions, city landmarks, spatial relations, and more. Understand key phrases for seeking directions and explore a city map to navigate locations using descriptive spatial terms. Enhance your language skills with practical exer

0 views • 17 slides

ICAR KRISHI Geo-Portal is a digital platform aiming to facilitate spatial agricultural data generation, compilation, visualization, and analysis. It hosts spatial databases, provides map services, and allows data sharing across platforms. The portal, developed using open-source technologies, offers

1 views • 32 slides

Explore the concept of spatial relationships within data modeling, focusing on the fully-articulated paths encompassing E4 Period, E53 Place, and E18 Physical Thing. Delve into the implications of properties like P161 has spatial projection and P89 falls within, examining how places are uniquely def

0 views • 7 slides

This lecture delves into the requirements for resolution and sensitivity in astronomical imaging, exploring factors such as spatial resolution, optical design aberrations, and noise sources. It explains how spatial resolution is crucial in distinguishing objects, discussing the Rayleigh criterion an

0 views • 45 slides

Fourier theory plays a crucial role in seismic processing by helping to avoid temporal and spatial aliasing. It emphasizes the importance of sampling rates for accurate waveform reconstruction and highlights the significance of oversampling to prevent aliasing issues. Spatial aliasing is discussed i

0 views • 18 slides

The documents discuss the benefits of using unequal modulation over spatial streams in IEEE 802.11 networks to enhance throughput. Unequal modulation allows for adapting modulation schemes based on Signal-to-Noise Ratio (SNR) conditions, optimizing MIMO gains and coding rates for each spatial stream

0 views • 10 slides

Explore the concept of spatial continuity in geostatistics through descriptive analysis of sample data, variograms, covariance functions, and omnidirectional variograms. Learn about terminologies such as range, sill, and nugget effect, and the importance of omnidirectional variograms in capturing ov

0 views • 40 slides