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Papers by leonardo miranda

Research paper thumbnail of STRATEGIES FOR INNOVATION IN CONSTRUCTION DEMOLITION WASTE MANAGEMENT IN BRAZIL

The paper aims to present the strategies for innovation in construction and demolition waste mana... more The paper aims to present the strategies for innovation in construction and demolition waste management in Brazil and to compare them with international ones. The CDW traditional management is very costly to local authorities including several environmental impacts. The Brazilian experience shows that a policy based only on regulation of CDW transportation and landfilling is not totally efficient in controlling

Research paper thumbnail of CDW recycled aggregate renderings: Part I – Analysis of the effect of materials finer than 75 μm on mortar properties

Construction and Building Materials, 2006

Experience shows that renderings produced with natural sands or construction and demolition waste... more Experience shows that renderings produced with natural sands or construction and demolition waste (CDW) recycled aggregates could have a tendency to poor performance, due primarily to the variable quality of the sands, the absence of a well established mix design method for mortars, and other factors such as façade design, substrate quality and the placement technique. This paper focuses some

Research paper thumbnail of In-situ measurements of the complex acoustic impedance of materials in vehicle interiors

Over the years, several methods of measuring the complex acoustic impedance of materials have bee... more Over the years, several methods of measuring the complex acoustic impedance of materials have been presented, but none of them is well-established for practical in- situ measurements. The more stable and confident method to obtain such data (ISO 10534), requires ideal sound field conditions such as the propagation of plane waves inside of a tube; this condition is certainly not

Research paper thumbnail of Prospecting a new physical artifact of interaction for iDTV: Results of participatory practices

A literature review has indicated that the remote control, the main physical artifact of interact... more A literature review has indicated that the remote control, the main physical artifact of interaction with the television system, in its current form is not adequate to the interaction between users and applications of Interactive Digital Television (iDTV), especially in a scenario of diverse user profiles as found in Brazil. This paper describes participatory practices carried out with the intention

Research paper thumbnail of Designing Inclusive Social Networks: A Participatory Approach

Lecture Notes in Computer Science, 2009

The Brazilian society is characterized by vast differences with regard to socio-economics, cultur... more The Brazilian society is characterized by vast differences with regard to socio-economics, culture as well as access to technology and knowledge. In this scenario, Information and Communication Technology, especially hypermedia systems, could benefit citizen, ...

Research paper thumbnail of Adjustable Interactive Rings for iDTV: First Results of an Experiment with End-Users

Lecture Notes in Computer Science, 2011

Based on previous results of our research in the field of physical artifacts for interaction with... more Based on previous results of our research in the field of physical artifacts for interaction with Interactive Digital Television (iDTV) we developed a new digital device we named Adjustable Interactive Rings (AIRs). This work presents a quantitative analysis of an experiment conducted with twelve end-users in order to investigate the interaction of users with the hardware prototype of AIRs for

Research paper thumbnail of Adjustable Interactive Rings for iDTV

Literature has shown that the remote control, the main artifact for interaction with the televisi... more Literature has shown that the remote control, the main artifact for interaction with the television system, is not adequate to mediate the interaction with Interactive Digital Television (iDTV). This work presents and discusses a new proposal of artifact for interaction with iDTV applications. The paper presents in details the product design and the interaction language for the new digital artifact which presupposes its use by everyone, in the widest possible extension. Additionally, we show the prototype of these new hardware devices and an evaluation with prospective end users of the solution described in this paper 1 .

Research paper thumbnail of STRATEGIES FOR INNOVATION IN CONSTRUCTION DEMOLITION WASTE MANAGEMENT IN BRAZIL

The paper aims to present the strategies for innovation in construction and demolition waste mana... more The paper aims to present the strategies for innovation in construction and demolition waste management in Brazil and to compare them with international ones. The CDW traditional management is very costly to local authorities including several environmental impacts. The Brazilian experience shows that a policy based only on regulation of CDW transportation and landfilling is not totally efficient in controlling

Research paper thumbnail of CDW recycled aggregate renderings: Part I – Analysis of the effect of materials finer than 75 μm on mortar properties

Construction and Building Materials, 2006

Experience shows that renderings produced with natural sands or construction and demolition waste... more Experience shows that renderings produced with natural sands or construction and demolition waste (CDW) recycled aggregates could have a tendency to poor performance, due primarily to the variable quality of the sands, the absence of a well established mix design method for mortars, and other factors such as façade design, substrate quality and the placement technique. This paper focuses some

Research paper thumbnail of In-situ measurements of the complex acoustic impedance of materials in vehicle interiors

Over the years, several methods of measuring the complex acoustic impedance of materials have bee... more Over the years, several methods of measuring the complex acoustic impedance of materials have been presented, but none of them is well-established for practical in- situ measurements. The more stable and confident method to obtain such data (ISO 10534), requires ideal sound field conditions such as the propagation of plane waves inside of a tube; this condition is certainly not

Research paper thumbnail of Prospecting a new physical artifact of interaction for iDTV: Results of participatory practices

A literature review has indicated that the remote control, the main physical artifact of interact... more A literature review has indicated that the remote control, the main physical artifact of interaction with the television system, in its current form is not adequate to the interaction between users and applications of Interactive Digital Television (iDTV), especially in a scenario of diverse user profiles as found in Brazil. This paper describes participatory practices carried out with the intention

Research paper thumbnail of Designing Inclusive Social Networks: A Participatory Approach

Lecture Notes in Computer Science, 2009

The Brazilian society is characterized by vast differences with regard to socio-economics, cultur... more The Brazilian society is characterized by vast differences with regard to socio-economics, culture as well as access to technology and knowledge. In this scenario, Information and Communication Technology, especially hypermedia systems, could benefit citizen, ...

Research paper thumbnail of Adjustable Interactive Rings for iDTV: First Results of an Experiment with End-Users

Lecture Notes in Computer Science, 2011

Based on previous results of our research in the field of physical artifacts for interaction with... more Based on previous results of our research in the field of physical artifacts for interaction with Interactive Digital Television (iDTV) we developed a new digital device we named Adjustable Interactive Rings (AIRs). This work presents a quantitative analysis of an experiment conducted with twelve end-users in order to investigate the interaction of users with the hardware prototype of AIRs for

Research paper thumbnail of Adjustable Interactive Rings for iDTV

Literature has shown that the remote control, the main artifact for interaction with the televisi... more Literature has shown that the remote control, the main artifact for interaction with the television system, is not adequate to mediate the interaction with Interactive Digital Television (iDTV). This work presents and discusses a new proposal of artifact for interaction with iDTV applications. The paper presents in details the product design and the interaction language for the new digital artifact which presupposes its use by everyone, in the widest possible extension. Additionally, we show the prototype of these new hardware devices and an evaluation with prospective end users of the solution described in this paper 1 .