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Papers by Ricardo Garcia

Research paper thumbnail of Bimodal AFM imaging of individual protein molecules with sub-pico Newton force sensitivity

The capability of atomic force microscopes (AFM) to generate atomic or nanoscale resolution image... more The capability of atomic force microscopes (AFM) to generate atomic or nanoscale resolution images of surfaces has deeply transformed the study of materials. However, high resolution imaging of biological systems has proved more difficult than obtaining atomic resolution images of crystalline surfaces. In many cases, the forces exerted by the tip on the molecules (1-10 nN) either displace them laterally

Research paper thumbnail of Microporous niobia-silica membranes: Influence of sol composition and structure on gas transport properties

Microporous and Mesoporous Materials, 2009

Research paper thumbnail of Programa Computacional Para Determinação Da Capacidade Operacional De Máquinas Agrícolas

Research paper thumbnail of Uso de instalaciones demostrativas en las enseñanzas técnicas. Climatización mediante energía geotérmica

Research paper thumbnail of Location of hydrogen refueling stations: an equilibrium approach

ABSTRACT http://congresse2kw.uclm.es/

Research paper thumbnail of An optimization approach for evaluating subsidies in the initial location of hydrogen refueling stations

Research paper thumbnail of Factors that affect sprouting and tillering of sugar cane

Research paper thumbnail of Cone index after mechanized harvesting of sugarcane in the North Fluminense

Research paper thumbnail of Programa computacional para aquisição de dados para avaliação de máquinas agrícolas

Revista Brasileira de Engenharia Agrícola e Ambiental, 2003

... Ricardo F. Garcia I ; Daniel M. de Queiroz II ; Olímpio H. Miyagaki III ; Francisco de A. de ... more ... Ricardo F. Garcia I ; Daniel M. de Queiroz II ; Olímpio H. Miyagaki III ; Francisco de A. de C. Pinto IV. ... Geralmente, este valor numérico, ou medido, não é igual ao valor real da variável, ou seja, o sistema de aquisição tem como entrada o valor real da variável e sua saída é o ...

Research paper thumbnail of Hardware implementation of a new neurocontrol wheelchair-guidance system

Research paper thumbnail of Simulação do comportamento dinâmico de um conjunto trator-colhedora de feijão

Revista Brasileira de Engenharia Agrícola e Ambiental, 2003

Research paper thumbnail of Evaluation of Visible Losses and Damage to the Ratoon Cane in the Mechanized Harvesting of Sugarcane for Different Displacement Speeds

American Journal of Plant Sciences, 2014

Research paper thumbnail of Heuristic Algorithm for Coordination in Public Transport under Disruptions

Lecture Notes in Computer Science, 2009

This paper deals with on-line coordination of public transport systems under disruptions. An on-l... more This paper deals with on-line coordination of public transport systems under disruptions. An on-line optimization model is proposed in order to support decisions about how to balance all the fleet of transit lines in the public transport system and also to minimize waiting time caused by disruption. A fast heuristic algorithm is developed for the on-line problem and a numerical

Research paper thumbnail of Advanced scanning probe lithography

Nature nanotechnology, 2014

The nanoscale control afforded by scanning probe microscopes has prompted the development of a wi... more The nanoscale control afforded by scanning probe microscopes has prompted the development of a wide variety of scanning-probe-based patterning methods. Some of these methods have demonstrated a high degree of robustness and patterning capabilities that are unmatched by other lithographic techniques. However, the limited throughput of scanning probe lithography has prevented its exploitation in technological applications. Here, we review the fundamentals of scanning probe lithography and its use in materials science and nanotechnology. We focus on robust methods, such as those based on thermal effects, chemical reactions and voltage-induced processes, that demonstrate a potential for applications.

Research paper thumbnail of A model for heterogeneous neurons and its use in configuring neural networks for classification problems

Lecture Notes in Computer Science, 1997

Page 1. A Model for Heterogeneous Neurons and Its Use in Configuring Neural Networks for Classifi... more Page 1. A Model for Heterogeneous Neurons and Its Use in Configuring Neural Networks for Classification Problems Julio J. Vald~s ] and Ricardo Garcfa Dept. of Languages and Informatic Systems. Polytechnical University ...

Research paper thumbnail of A modeling framework for the estimation of optimal CO2 emission taxes for private transport

Research paper thumbnail of A demand-based weighted train delay approach for rescheduling railway networks in real time

ABSTRACT Rail systems are highly complex and their control in real time requires mathematical–com... more ABSTRACT Rail systems are highly complex and their control in real time requires mathematical–computational tools. The main aim of these tools is to perform swift optimal rescheduling in response to disruptions or delays caused by events not foreseen in the original plans, so that there is no knock-on effect on other services due to these primary delays. This paper proposes a novel weighted train delay based on demand approach based on the alternative graph concept for rescheduling passenger train services. This problem is formulated as a binary integer linear programming problem which tries to maximize consumer satisfaction by minimizing total passenger delay at destinations. A heuristic method, the so-called Avoid Most Delayed Alternative Arc (AMDAA) algorithm, is proposed to solve the model. AMDAA is an adaptation of Avoid Maximum Current Cmax (AMCC) developed by Mascis and Pacciarelli (2002) to the new model. A numerical comparison is carried out with AMDAA, a Branch-and-Cut method, AMCC and the heuristic First Come First Served (FCFS). Numerical research carried out with data from the Renfe Cercanias Madrid rail network (Spain) shows the high computational performance in real applications of the algorithms and the suitability of this weighted train delay based on demand model versus the classical makespan minimization approach.

Research paper thumbnail of A monte carlo approach to simulate the stochastic demand in a continuous dynamic traffic network loading problem

Research paper thumbnail of Desempenho operacional de conjunto trator-recolhedora de feijão

Engenharia Agrícola, 2005

Research paper thumbnail of A Framework for Derivative Free Algorithm Hybridization

Lecture Notes in Computer Science, 2013

Research paper thumbnail of Bimodal AFM imaging of individual protein molecules with sub-pico Newton force sensitivity

The capability of atomic force microscopes (AFM) to generate atomic or nanoscale resolution image... more The capability of atomic force microscopes (AFM) to generate atomic or nanoscale resolution images of surfaces has deeply transformed the study of materials. However, high resolution imaging of biological systems has proved more difficult than obtaining atomic resolution images of crystalline surfaces. In many cases, the forces exerted by the tip on the molecules (1-10 nN) either displace them laterally

Research paper thumbnail of Microporous niobia-silica membranes: Influence of sol composition and structure on gas transport properties

Microporous and Mesoporous Materials, 2009

Research paper thumbnail of Programa Computacional Para Determinação Da Capacidade Operacional De Máquinas Agrícolas

Research paper thumbnail of Uso de instalaciones demostrativas en las enseñanzas técnicas. Climatización mediante energía geotérmica

Research paper thumbnail of Location of hydrogen refueling stations: an equilibrium approach

ABSTRACT http://congresse2kw.uclm.es/

Research paper thumbnail of An optimization approach for evaluating subsidies in the initial location of hydrogen refueling stations

Research paper thumbnail of Factors that affect sprouting and tillering of sugar cane

Research paper thumbnail of Cone index after mechanized harvesting of sugarcane in the North Fluminense

Research paper thumbnail of Programa computacional para aquisição de dados para avaliação de máquinas agrícolas

Revista Brasileira de Engenharia Agrícola e Ambiental, 2003

... Ricardo F. Garcia I ; Daniel M. de Queiroz II ; Olímpio H. Miyagaki III ; Francisco de A. de ... more ... Ricardo F. Garcia I ; Daniel M. de Queiroz II ; Olímpio H. Miyagaki III ; Francisco de A. de C. Pinto IV. ... Geralmente, este valor numérico, ou medido, não é igual ao valor real da variável, ou seja, o sistema de aquisição tem como entrada o valor real da variável e sua saída é o ...

Research paper thumbnail of Hardware implementation of a new neurocontrol wheelchair-guidance system

Research paper thumbnail of Simulação do comportamento dinâmico de um conjunto trator-colhedora de feijão

Revista Brasileira de Engenharia Agrícola e Ambiental, 2003

Research paper thumbnail of Evaluation of Visible Losses and Damage to the Ratoon Cane in the Mechanized Harvesting of Sugarcane for Different Displacement Speeds

American Journal of Plant Sciences, 2014

Research paper thumbnail of Heuristic Algorithm for Coordination in Public Transport under Disruptions

Lecture Notes in Computer Science, 2009

This paper deals with on-line coordination of public transport systems under disruptions. An on-l... more This paper deals with on-line coordination of public transport systems under disruptions. An on-line optimization model is proposed in order to support decisions about how to balance all the fleet of transit lines in the public transport system and also to minimize waiting time caused by disruption. A fast heuristic algorithm is developed for the on-line problem and a numerical

Research paper thumbnail of Advanced scanning probe lithography

Nature nanotechnology, 2014

The nanoscale control afforded by scanning probe microscopes has prompted the development of a wi... more The nanoscale control afforded by scanning probe microscopes has prompted the development of a wide variety of scanning-probe-based patterning methods. Some of these methods have demonstrated a high degree of robustness and patterning capabilities that are unmatched by other lithographic techniques. However, the limited throughput of scanning probe lithography has prevented its exploitation in technological applications. Here, we review the fundamentals of scanning probe lithography and its use in materials science and nanotechnology. We focus on robust methods, such as those based on thermal effects, chemical reactions and voltage-induced processes, that demonstrate a potential for applications.

Research paper thumbnail of A model for heterogeneous neurons and its use in configuring neural networks for classification problems

Lecture Notes in Computer Science, 1997

Page 1. A Model for Heterogeneous Neurons and Its Use in Configuring Neural Networks for Classifi... more Page 1. A Model for Heterogeneous Neurons and Its Use in Configuring Neural Networks for Classification Problems Julio J. Vald~s ] and Ricardo Garcfa Dept. of Languages and Informatic Systems. Polytechnical University ...

Research paper thumbnail of A modeling framework for the estimation of optimal CO2 emission taxes for private transport

Research paper thumbnail of A demand-based weighted train delay approach for rescheduling railway networks in real time

ABSTRACT Rail systems are highly complex and their control in real time requires mathematical–com... more ABSTRACT Rail systems are highly complex and their control in real time requires mathematical–computational tools. The main aim of these tools is to perform swift optimal rescheduling in response to disruptions or delays caused by events not foreseen in the original plans, so that there is no knock-on effect on other services due to these primary delays. This paper proposes a novel weighted train delay based on demand approach based on the alternative graph concept for rescheduling passenger train services. This problem is formulated as a binary integer linear programming problem which tries to maximize consumer satisfaction by minimizing total passenger delay at destinations. A heuristic method, the so-called Avoid Most Delayed Alternative Arc (AMDAA) algorithm, is proposed to solve the model. AMDAA is an adaptation of Avoid Maximum Current Cmax (AMCC) developed by Mascis and Pacciarelli (2002) to the new model. A numerical comparison is carried out with AMDAA, a Branch-and-Cut method, AMCC and the heuristic First Come First Served (FCFS). Numerical research carried out with data from the Renfe Cercanias Madrid rail network (Spain) shows the high computational performance in real applications of the algorithms and the suitability of this weighted train delay based on demand model versus the classical makespan minimization approach.

Research paper thumbnail of A monte carlo approach to simulate the stochastic demand in a continuous dynamic traffic network loading problem

Research paper thumbnail of Desempenho operacional de conjunto trator-recolhedora de feijão

Engenharia Agrícola, 2005

Research paper thumbnail of A Framework for Derivative Free Algorithm Hybridization

Lecture Notes in Computer Science, 2013

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