Rodrigo Ferraz - Academia.edu (original) (raw)

Papers by Rodrigo Ferraz

Remote Sensing

Due to different combinations of agriculture, livestock and forestry managed by rotation, success... more Due to different combinations of agriculture, livestock and forestry managed by rotation, succession and intercropping practices, integrated agriculture production systems such as integrated crop–livestock systems (iCL) constitute a very complex target and a challenge for automatic mapping of cropping practices based on remote sensing data. The overall objective of this study was to develop a classification strategy for the annual mapping of integrated Crop–Livestock systems (iCL) at a regional scale. This strategy was designed and tested in the six agro-climatic regions of Mato Grosso, the largest Brazilian soybean producer state, using MODIS satellite time-series images acquired between 2012 and 2019, ground data with heterogeneous distribution in space and time and a Random Forest classifier. The results showed that: 1. the use of unbalanced training samples with a class composition close to the real one was the right classifier training strategy; 2. the use of a single training ...

Revista de Educação Física / Journal of Physical Education, 2004

A atividade militar, principalmente nas unidades operacionais, exige de seus integrantes um adequ... more A atividade militar, principalmente nas unidades operacionais, exige de seus integrantes um adequado grau de condicionamento físico. Os militares bem preparados fisicamente possuem maior prontidão para o combate, demonstrando maiores níveis de autoconfiança e motivação, além de possuir uma maior aptidão para suportar o estresse debilitante do combate (O'CONNOR, BAHRKE & TETU, 1990). Uma tropa em operação de combate executa a atividade de marcha com bom rendimento quando chega ao seu destino no tempo previsto e em condições de cumprir a missão recebida, coadunando para o seu sucesso, dentre outros fatores, o grau de instrução, o moral e o vigor físico (BRASIL, 1980). A eficiência do tiro é de fundamental importância no combate, contribuindo para o sucesso ou o não cumprimento das missões. Em determinados exercícios de tiro é feita uma apreciação qualitativa (menção) que, além de indicar a suficiência do desempenho individual, expressa a adequação técnica e a eficiência do atirado...

Earth System Science Data, 2021

The development of monitoring in the discip lines of "Agroecology I" and " Agroeco... more The development of monitoring in the discip lines of "Agroecology I" and " Agroecology II " in Universidade Federal da Fronteira Sul c ampus Cerro Largo aimed to provide the graduate students the opportunity to experience didactic - pedagogical experiences in the area of Agroecology, creating conditions for the students exercise know ledge gained from curriculum components, stimulating the development of skills related to the systematization of the teaching work through par ti cipa ti on monitors in curricular activities, events, training courses and research projec ts related to Agroecolog y and ecologically - based production systems, presenting thus monitoring as a fully emancipatory activity with the potential for training future teachers who worked in the area of agroecology.

The aim of this study was to evaluate the indicators for Water Sustainability Assessment of Agric... more The aim of this study was to evaluate the indicators for Water Sustainability Assessment of Agricultural Systems, proposed by Ferraz (2012), by conducting a study case to assess the sugarcane activity water sustainability in 10 municipalities in the southwest region of the Goias State, Brazil. These indicators are direct indexes obtained from data extracted through geoprocessing techniques from spatial models, such as: (i) Sugarcane Agroecological Zoning (Embrapa, 2009); (ii) Water contamination vulnerability by agricultural effluents model (Barbalho e Campos, 2010); (iii) Specific flow spatially model (Ferraz, 2012.). The indexes allow indicate: (i) pedoclimatic favorability areas: (ii) the surface and groundwater contamination vulnerability areas; (iii) sugarcane water sustainability level. The results show that the indicators were able to characterize and distinguish the differences between the units of analysis (municipalities) and, considering the scale and the detail level req...

Journal of drugs in dermatology : JDD, 2019

wide variety of therapeutic options, some challenges have arisen: designing an adequate treatment... more wide variety of therapeutic options, some challenges have arisen: designing an adequate treatment plan, electing the most suitable procedures for the patient, taking into consideration the rheological characteristics of the products, considering the amount needed to achieve a natural look, but also defining the safest way to deliver the treatment. Aging of the facial structural tissue layers occurs at a different pace and the requirements for the aesthetic approach of a 30-year-old patient are different from a 60-year-old patient. A group of twelve experts in minimally invasive injectable procedures sought to identify common changes observed in different age groups in order to help in establishing a plan of treatment for patients of different ages. The individualized aesthetic plan should consider the main pillars of the aesthetic treatment -- aging process, facial assessment, and facial anatomy, to identify and systematize common changes observed in different age groups, as well as...

Physical therapy aims to improve the quality of life of patients through intensive treatments. Ho... more Physical therapy aims to improve the quality of life of patients through intensive treatments. However, the attendance is not always enough, and it is necessary to have complementary exercises to be performed in a home environment, in an autonomous way. The goal of this is to develop an e-health application, on the Android platform, to enable: (a) making these exercises available for patients; and (b) monitoring of the physiotherapist by parameters such as pain and range of motion. Here is presented the study and construction of the application FisioApp, with the use of MySQL; of the Scrum development methodology; and m-Health architecture.

Deforestation and climate change heavily impact the ecosystem of the Amazon rainforest threatenin... more Deforestation and climate change heavily impact the ecosystem of the Amazon rainforest threatening its resilience and the sustainability of many human activities. Land protection may prevent ecosystems and their services to deteriorate from the pressures of agricultural expansion, population growth and wood harvesting. In the Brazilian Amazon land protection occurs in several forms such as environmental conservation, setting biodiversity priority areas and the delineation of indigenous lands. Still, the effects are not clear as understanding of the ecosystems is incomplete and responses to human actions are highly uncertain. Bayesian Belief Networks (BBN) are models that probabilistically represent correlative and causal relationships among variables. BBNs have been successfully applied to natural resource management to address environmental management problems and to assess the impact of alternative management measures. By training the probabilistic relationships using field data, ...

Clinical Approaches and Procedures in Cosmetic Dermatology, 2017

The availability of crop type reference datasets for satellite image classification is very limit... more The availability of crop type reference datasets for satellite image classification is very limited for complex agricultural systems as observed in developing and emerging countries. Indeed, agricultural land use is very dynamic, agricultural census are often poorly georeferenced, and crop types are difficult to photo-interpret directly from satellite imagery. In this paper, we present nine datasets collected in a standardized manner between 2013 and 2020 in seven tropical and subtropical countries within the framework of the international JECAM (Joint Experiment for Crop Assessment and Monitoring) initiative. These quality-controlled datasets are distinguished by in situ data collected at field scale by local experts, with precise geographic coordinates, and following a common protocol. Altogether, the datasets completed 27 074 polygons (20 257 crop and 6 817 non-crop) documented by detailed keywords. These datasets can be used to produce and validate agricultural land use maps in the tropics, but also, to assess the performances and the robustness of classification methods of cropland and crop types/practices in a large range of tropical farming systems. The dataset is available at

International Journal of Applied Earth Observation and Geoinformation, 2020

The adoption of new cropping practices such as integrated Crop-Livestock systems (iCL) aims at im... more The adoption of new cropping practices such as integrated Crop-Livestock systems (iCL) aims at improving the land use sustainability of the agricultural sector in the Brazilian Amazon. The emergence of such integrated systems, based on crop and pasture rotations over and within years, challenges the remote sensing community who needs to implement accurate and efficient methods to process satellite image time series (SITS) in order to come up with a monitoring protocol. These methods generally include a SITS preprocessing step which can be time consuming. The aim of this study is to assess the importance of preprocessing operations such as temporal smoothing and computation of phenological metrics on the mapping of main cropping systems (i.e. pasture, single cropping, double cropping and iCL), with a special emphasis on the iCL class. The study area is located in the state of Mato Grosso, an important producer of agriculture commodities located in the Southern Brazilian Amazon. SITS were composed of a set of 16-day composites of MODIS Vegetation Indices (MOD13Q1 product) covering a one year period between 2014 and 2015. Two widely used classifiers, i.e. Random Forest (RF) and Support Vector Machine (SVM), were tested using five data sets issued from a same SITS but with different preprocessing levels: (i) raw NDVI; (ii) raw NDVI + raw EVI; (iii) smoothed NDVI; (iv) NDVI-derived phenometrics; (v) raw NDVI + phenometrics. Both RF and SVM classification results showed that the "raw NDVI + raw EVI" data set achieved the highest performance (RF OA = 0.96, RF Kappa = 0.94, SVM OA = 0.95, SVM Kappa = 0.93), followed closely by the "raw NDVI" and the "raw NDVI + phenometrics" datasets. The "NDVIderived phenometrics" alone achieved the lowest accuracies (RF OA = 0.58 and SVM OA = 0.66). Considering that the implementation of preprocessing steps is computationally expensive and does not provide significant gains in terms of classification accuracy, we recommend to use raw vegetation indices for mapping cropping practices in Mato Grosso, including the integrated Crop-Livestock systems.

Man-in-the-loop or human-in-the-loop simulations reproduce virtually real or imaginary environmen... more Man-in-the-loop or human-in-the-loop simulations reproduce virtually real or imaginary environments to the user, being used for several purposes, such as, entertainment, training, experiment and rehabilitation. In training area, the simulators are more and more used aiming, specially for costs and risks reduction besides the total control of training conditions. Training simulators have been used in several areas such as medicine (surgical procedures simulators), evaluation, traffic, nautical, industrial, military, among others. One of the difficulties in the simulator development for training is to project and implement the virtual environment model in software. Even though there are several free and commercial tools that might help in simulator development, few of them focus on system modeling and execution, and those are, in it's majority, proprietary.

Revista Eletrônica de Sistemas de Informação, 2007

Neste artigo descreve-se o estudo e a construção de uma ferramenta para desenvolvimento rápido de... more Neste artigo descreve-se o estudo e a construção de uma ferramenta para desenvolvimento rápido de aplicação (RAD), durante o ciclo de vida do desenvolvimento de software, utilizando a geração de código unidirecional. O presente trabalho aborda conceitos, reutilização de classes existentes e consolidadas na comunidade software livre, motivação para a sua elaboração e um estudo de viabilidade para validação da ferramenta desenvolvida.

Remote Sensing of Environment, 2019

With the unprecedented availability of satellite data and the rise of global binary maps, the col... more With the unprecedented availability of satellite data and the rise of global binary maps, the collection of shared reference data sets should be fostered to allow systematic product benchmarking and validation. Authoritative global reference data are generally collected by experts with regional knowledge through photo-interpretation. During the last decade, crowdsourcing has emerged as an attractive alternative for rapid and relatively cheap data collection, beckoning the increasingly relevant question: can these two data sources be combined to validate thematic maps? In this article, we compared expert and crowd data and assessed their relative agreement for cropland identification, a land cover class often reported as difficult to map. Results indicate that observations from experts and volunteers could be partially conflated provided that several consistency checks are performed. We propose that conflation, i.e., replacement and augmentation of expert observations by crowdsourced observations, should be carried out both at the sampling and data analytics levels. The latter allows to evaluate the reliability of crowdsourced observations and to decide whether they should be conflated or discarded. We demonstrate that the standard deviation of crowdsourced contributions is a simple yet robust indicator of reliability which can effectively inform conflation. Following this criterion, we found that 70% of the expert observations could be crowdsourced with little to no effect on accuracy estimates, allowing a strategic reallocation of the spared expert effort to increase the reliability of the remaining 30% at no additional cost. Finally, we provide a collection of evidence-based recommendations for future hybrid reference data collection campaigns.

Ecosystems and People, 2018

Ecosystem service (ES) models can only inform policy design adequately if they incorporate ecolog... more Ecosystem service (ES) models can only inform policy design adequately if they incorporate ecological processes. We used the Lund-Potsdam-Jena managed Land (LPJmL) model, to address following questions for Mexico, Bolivia and Brazilian Amazon: (i) How different are C stocks and C sequestration quantifications under standard (when soil and litter C and heterotrophic respiration are not considered) and comprehensive (including all C stock and heterotrophic respiration) approach? and (ii) How does the valuation of C stock and C sequestration differ in national payments for ES and global C funds or markets when comparing both approach? We found that up to 65% of C stocks have not been taken into account by neglecting to include C stored in soil and litter, resulting in gross underpayments (up to 500 times lower). Since emissions from heterotrophic respiration of organic material offset a large proportion of C gained through growth of living matter, we found that markets and decision-makers are inadvertently overestimating up to 100 times C sequestrated. New approaches for modelling C services relevant ecological process-based can help accounting for C in soil, litter and heterotrophic respiration and become important for the operationalization of agreements on climate change mitigation following the COP21 in 2015.

Journal of cosmetic dermatology, Jan 16, 2016

Physicians face the challenge of individualizing aesthetic treatments in order to match the aesth... more Physicians face the challenge of individualizing aesthetic treatments in order to match the aesthetic needs of patients with their expectations. To review issues underlying patient satisfaction with minimally invasive aesthetic treatment and to present a patient-centric assessment tool (the Global Ranking Scale [GRS]) designed to set higher standards for patient consultation and treatment experience; ensure a comprehensive patient-centric aesthetic consultation process; and raise patient satisfaction with facial rejuvenation treatment. A review of the design and content of the GRS and its use as part of the wider Galderma Harmony Program. Results of a small survey of clinicians who have switched to the GRS, and case studies of patients who have used the tool, are also presented. The GRS is used in ~500 clinics around the world. In a small survey, physicians who have used the GRS report that it has changed the way that patients are assessed and treated. While no patient survey was co...

Revista de Engenharia Térmica, 2003

The main goal of this paper is to demonstrate the general characteristics of the educational user... more The main goal of this paper is to demonstrate the general characteristics of the educational user-friendly CFD Studio package for CFD teaching. The package was designed for teaching 2D fluid mechanics and heat transfer process, including conduction, coupled conduction/convection, natural and forced convection, external and internal flows, among other phenomena. The finite volume methodology and its related topics can also be taught using the software. Therefore, general aspects of the three main modules, pre-processor, solver and post-processor are discussed aiming to show the generality of the tool. These modules are integrated in the application by a so-called numerical problem project which guide the student through the steps to obtain the solution. To approximate the partial differential equations the finite volume approach is employed using a fully-implicit formulation with the interpolation schemes CDS, UDS and WUDS. Mesh editing and nonorthogonal boundary-fitted mesh genera...