Results 111 to 120 of about 996,664 (230)

Development of a state feedback controller for the synchronous buck converter [PDF]

open access: yes, 2005
A digital control algorithm for a current-mode (CM) and a voltage-mode (VM) synchronous buck converter (SBC) is developed. In both cases, the design leads to a stable controller, even for a duty cycle larger than 50%.
Bortolotto, Gustavo   +2 more
core  

Biocomposites Based on Thermoplastic Starch and Granite Sand Quarry Waste [PDF]

open access: yes, 2019
Granite stone is a by-product of the rock crushing manufacturing. An industrial waste in powder form that causes health problems and environmental pollution. Fine particles fraction can be used as a partial replacement of sand in concrete manufacture. In
Irassar, Edgardo Fabián   +7 more
core   +1 more source

Autonomous Navigation in Large‐Scale Underground Environments Based on a Purely Topological Understanding of Tunnel Networks

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This work presents a non‐geometrical navigation approach based on a purely topological understanding of underground environments. By conceptualizing subterranean scenarios as a set of tunnels that intersect with each other, and taking a navigation approach based on topological instructions, we simplify the navigation problem to the sequential ...
Lorenzo Cano   +2 more
wiley   +1 more source

La relación entre la ingeniería y la ciencia

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2004
Se hace una introducción a lo que es ciencia, se muestra cómo ésta es fundamento central de la ingeniería moderna, pero es apenas uno de sus componentes, pues antes de que aquélla se incorporara a la ingeniería, ésta ya existía como quehacer del ...
Asdrúbal Valencia Giraldo
doaj  

The relay network of Geobacter biofilms [PDF]

open access: yes, 2018
While actual models explaining electron conduction in electricity producing biofilms have evolved separately to apparent irreconcilable conceptual positions, finding cytochrome complexes in the external matrix of Geobacter biofilms supports the proposal ...
Busalmen, Juan Pablo   +3 more
core   +1 more source

Control System for the Navigation of the Agricultural Robots: A Review

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Control systems for the navigation of autonomous agricultural robots—particularly those operating in uneven terrain and in the presence of static or dynamic obstacles—have advanced considerably in recent years. As conventional machinery evolves toward increasingly automated systems, the design of reliable navigation controllers has become ...
Edna Carolina Moriones Polanía   +3 more
wiley   +1 more source

An embedded system for evoked biopotential acquisition and processing [PDF]

open access: yes, 2014
This work presents an autonomous embedded system for evoked biopotential acquisition and processing. The system is versatile and can be used on different evoked potential scenarios like medical equipments or brain computer interfaces, fulfilling the ...
Garcia, Pablo Andres   +2 more
core   +2 more sources

Social, Technological, Economic, and Policy Factors in the Circular Economy Transition in Brazil

open access: yesSustainable Development, EarlyView.
ABSTRACT A well‐functioning circular economy (CE) integrates resilience across economic, environmental, and social dimensions. This study identifies key drivers and barriers to Brazil's CE transition through 20 semi‐structured interviews with stakeholders. Major sociocultural barriers include inadequate education and limited CE awareness, while growing
Alejandro Gallego‐Schmid   +9 more
wiley   +1 more source

Construir la España contemporánea: el ingeniero de minas y empresario Valentín Vallhonrat Gómez (1884-1965)

open access: yesSantander, Estudios de Patrimonio, 2019
Abanderado de la sociedad constructora que fundara en 1914, junto a un equipo de arquitectos y técnicos de diferentes especialidades, el ingeniero de minas Valentín Vallhonrat intervino en un número considerable de proyectos que constituyen el fiel ...
Sara del HOYO MAZA
doaj   +1 more source

Business Model and Sustainable Development Goals for an Innovative Agricultural Waste Management: Distributed Biogas Production

open access: yesSustainable Development, EarlyView.
ABSTRACT Technological progress and population growth have increased global pork demand; leading to a rise of methane emission from pig farming, a key contributor to climate change. Anaerobic digestion offers a sustainable solution by converting manure into biogas.
María‐Pilar Martínez‐Hernando   +5 more
wiley   +1 more source

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