Results 91 to 100 of about 23,631,400 (298)

Trayectorias con ruta predefinida en una bodega de datos: un caso de estudio sobre transporte público Trajectory with predefined path on a data warehouse: a case study on public transport

open access: yesRevista Ingenierías Universidad de Medellín, 2010
Hoy, gracias a los sistemas de posicionamiento global y dispositivos móviles equipados con sensores se puede capturar información acerca de la trayectoria seguida por objetos móviles tales como personas, animales, vehículos, entre otros. En este artículo
Francisco Javier Moreno Arboleda   +2 more
doaj  

Building secure multidimensional data management system

open access: yesБезопасность информационных технологий, 2018
Nowadays one should not underestimate importance of informational technologies across all fields of humans’ life. Computational technologies and tools became crucial parts of any human activity. However, since information is becoming a strategic resource,
Andrey V. Gorlatyh   +1 more
doaj   +1 more source

Factorization Machine‐Based Active Learning for Functional Materials Design with Optimal Initial Data

open access: yesAdvanced Intelligent Discovery, EarlyView.
This work investigates the optimal initial data size for surrogate‐based active learning in functional material optimization. Using factorization machine (FM)‐based quadratic unconstrained binary optimization (QUBO) surrogates and averaged piecewise linear regression, we show that adequate initial data accelerates convergence, enhances efficiency, and ...
Seongmin Kim, In‐Saeng Suh
wiley   +1 more source

Automating the Schema Matching Process for Heterogeneous Data Warehouses

open access: yes, 2007
A federated data warehouse is a logical integration of data warehouses applicable when physical integration is impossible due to privacy policy or legal restrictions.
Banek, Marko   +3 more
core   +1 more source

FastCat: Autonomous Discovery of Multielement Layered Double Hydroxide Alloy Catalysts for Alkaline Oxygen Evolution Reaction

open access: yesAdvanced Intelligent Discovery, EarlyView.
A machine learning‐guided self‐driving laboratory screened over 500 nickel‐based layered double‐hydroxide catalysts for alkaline oxygen evolution. Out of the eight metals, the robot uncovered a quaternary Ni–Fe–Cr–Co catalysts requiring only 231 mV overpotential to reach 20 mA cm−2.
Nis Fisker‐Bødker   +3 more
wiley   +1 more source

DATA WAREHOUSES SECURITY IMPLEMENTATION [PDF]

open access: yes, 2009
Data warehouses were initially implemented and developed by the big firms and they were used for working out the managerial problems and for making decisions.
Burtescu Emil
core  

Bayesian Exploration of Metal‐Organic Framework‐Derived Nanocomposites for High‐Performance Supercapacitors

open access: yesAdvanced Intelligent Discovery, EarlyView.
An AI‐assisted approach is introduced to decode synthesis–performance relationships in metal‐organic framework‐derived supercapacitor materials using Bayesian optimization and predictive modeling, streamlining the search for optimal energy storage properties.
David Gryc   +8 more
wiley   +1 more source

Discovery of Novel Materials with Giant Dielectric Constants via First‐Principles Phonon Calculations and Machine Learning

open access: yesAdvanced Intelligent Discovery, EarlyView.
We discovered novel materials with giant dielectric constants by combining first‐principles phonon calculations and machine learning. Screening 525 perovskites identified six candidates. RbNbO3 was synthesized under pressure and showed ε ≈ 800–1000. This validates our framework as a powerful tool for high‐performance dielectric materials discovery.
Hiroki Moriwake   +9 more
wiley   +1 more source

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