Zifu Liu, R. M. Rasika D. Abeyrathna, Rizky Mulya Sampurno, Victor Massaki Nakaguchi, Tofael Ahamed,
Tópico(s): Advanced Chemical Sensor Technologies
2024 - Elsevier BV | Computers and Electronics in Agriculture
R. M. Rasika D. Abeyrathna, Victor Massaki Nakaguchi, Arkar Minn, Tofael Ahamed,
Recognition and 3D positional estimation of apples during harvesting from a robotic platform in a moving vehicle are still challenging. Fruit clusters, branches, foliage, low resolution, and different illuminations are unavoidable and cause errors in different environmental conditions. Therefore, this research aimed to develop a recognition system based on training datasets from an augmented, complex apple orchard. The recognition system was evaluated using deep learning algorithms established from ...
Tópico(s): Leaf Properties and Growth Measurement
2023 - Multidisciplinary Digital Publishing Institute | Sensors
Victor Massaki Nakaguchi, Tofael Ahamed,
Poultry production utilizes many available technologies in terms of farm-industry automation and sanitary control. However, there is a lack of robust techniques and affordable equipment for avian embryo detection and sexual segregation at the early stages. In this work, we aimed to evaluate the potential use of thermal micro cameras for detecting embryos in quail eggs via thermal images during the first 168 h (7 days) of incubation. We propose a methodology to collect data during the incubation period. ...
Tópico(s): Date Palm Research Studies
2022 - Multidisciplinary Digital Publishing Institute | Sensors
Victor Massaki Nakaguchi, Tofael Ahamed,
Freshness is one of the most important parameters for assessing the quality of avian eggs. Available techniques to estimate the degradation of albumen and enlargement of the air cell are either destructive or not suitable for high-throughput applications. The aim of this research was to introduce a new approach to evaluate the air cell of quail eggs for freshness assessment as a fast, noninvasive, and nondestructive method. A new methodology was proposed by using a thermal microcamera and deep learning ...
Tópico(s): Meat and Animal Product Quality
2022 - Multidisciplinary Digital Publishing Institute | Sensors
Produção Nacional
Revisado por pares
Andrea da Silva Santos Carbone, Dayse Sanchez Guimarães Paião, Renata Viebrantz Enne Sgarbi, Everton Ferreira Lemos, Renato Fernando Cazanti, Marcos Massaki Ota, Alexandre Laranjeira, José Victor Bortolotto Bampi, Vanessa Perreira Fayad Elias, Simone Simionatto, Ana Rita Coimbra Motta-Castro, Maurício Antônio Pompílio, Sandra Maria do Valle de Oliveira, Albert I. Ko, Jason R. Andrews, Júlio Croda,
Tuberculosis (TB) rates among prisoners are more than 20 times that of the general population in Brazil, yet there are limited data available to facilitate the development of effective interventions in this high-transmission setting. We aimed to assess risk factors for TB infection and evaluate the yield of mass screening for active disease among inmates. We administered a questionnaire and tuberculin skin test (TST) to a population-based sample of inmates from 12 prisons in Central-West Brazil and ...
Tópico(s): Medical Malpractice and Liability Issues
2015 - BioMed Central | BMC Infectious Diseases
Produção Nacional
Revisado por pares
Renato Duarte Costa, Celso Massaki Hirata, Victor Ulisses Pugliese,
Situation-awareness-based decision-making (SABDM) models constructed using cognitive maps and goal-direct task analysis techniques have been successfully used in decision support systems in safety-critical and mission-critical environments such as air traffic control and electrical energy distribution. Reinforcement learning (RL) and other machine learning techniques are used to automate situational awareness mental model parameter adjustments, reducing the expert work on the initial configuration ...
Tópico(s): Smart Grid Energy Management
2023 - Institute of Electrical and Electronics Engineers | IEEE Access
Arkar Minn, R. M. Rasika D. Abeyrathna, Victor Massaki Nakaguchi, Tofael Ahamed,
Developing countries in Asia widely use manual seed broadcasting methods due to a lack of appropriate seeding machinery. The agricultural sector is currently facing labor shortages and high labor costs, especially seasonal labor shortages for broadcasting and transplanting operations. However, the primary constraint in adopting existing broadcasting seeders for small-scale farmers in developing countries is the high initial purchase costs. Therefore, developing locally commercial accessible technology ...
Tópico(s): Soil Mechanics and Vehicle Dynamics
2023 - Multidisciplinary Digital Publishing Institute | Inventions
Victor Massaki Nakaguchi, R. M. Rasika D. Abeyrathna, Tofael Ahamed,
Tópico(s): Animal Nutrition and Physiology
2024 - Elsevier BV | Computers and Electronics in Agriculture
Produção Nacional
Victor Ulisses Pugliese, Renato Duarte Costa, Celso Massaki Hirata,
Machine Learning methods are key tools for aiding in the decision making of financial business problems, such as risk analysis, fraud detection, and credit-granting evaluations, reducing the time and effort and increasing accuracy. Supervised machine learning classification methods learn patterns in data to improve prediction. In the long term, the data patterns may change in a process known as concept drift, with the changes requesting retraining the classification methods to maintain their accuracies. ...
Tópico(s): Imbalanced Data Classification Techniques
2021 - Springer Science+Business Media | Lecture notes in business information processing
Nathália de Assis Queiroz, Stephanie Harue Massaki, João Victor Manzoni de Oliveira, Bruno Fernandes Albres, Carina Elisei de Oliveira, Jania de Rezende,
As bacterias Borrelia spp. sao transmitidas para humanos, animais domesticos e silvestres por carrapatos da familia Ixodidae. Esta espiroqueta pode acometer a doenca, borreliose de Lyme-Simile Brasileira e/ou Sindrome Baggio-Yoshinari. No Brasil, a sua epidemiologia e identificacao, necessita ser mais bem investigada, pois o exame parasitologico requer acuracidade. Existem evidencias da disseminacao deste parasitismo, e consequentemente maior atencao da saude Publica. Objetivou-se neste estudo ...
Tópico(s): Rabies epidemiology and control
2018 - Brazilian Journal of Development | Brazilian Journal of Animal and Environmental Research
Zifu Liu, Rizky Mulya Sampurno, R. M. Rasika D. Abeyrathna, Victor Massaki Nakaguchi, Tofael Ahamed,
With the decreasing and aging agricultural workforce, fruit harvesting robots equipped with higher degrees of freedom (DoF) manipulators are seen as a promising solution for performing harvesting operations in unstructured and complex orchard environments. In such a complex environment, guiding the end-effector from its starting position to the target fruit while avoiding obstacles poses a significant challenge for path planning in automatic harvesting. However, existing studies often rely on manually ...
Tópico(s): Robotics and Sensor-Based Localization
2024 - Multidisciplinary Digital Publishing Institute | Sensors
Victor Massaki Nakaguchi, R. M. Rasika D. Abeyrathna, Zifu Liu, Ryozo Noguchi, Tofael Ahamed,
Tópico(s): Vehicle License Plate Recognition
2024 - Elsevier BV | Computers and Electronics in Agriculture
R. M. Rasika D. Abeyrathna, Victor Massaki Nakaguchi, Zifu Liu, Rizky Mulya Sampurno, Tofael Ahamed,
Accurate localization of apples is the key factor that determines a successful harvesting cycle in the automation of apple harvesting for unmanned operations. In this regard, accurate depth sensing or positional information of apples is required for harvesting apples based on robotic systems, which is challenging in outdoor environments because of uneven light variations when using 3D cameras for the localization of apples. Therefore, this research attempted to overcome the effect of light variations ...
Tópico(s): Spectroscopy and Chemometric Analyses
2024 - Multidisciplinary Digital Publishing Institute | Sensors
Juliana de Melo Bezerra, Lara Santos Diniz, Victor da Silva Montalvão, Celso Massaki Hirata,
Online teams can help to increase organizational effectiveness, due to their flexibility and facility to gather resources originally dispersed. In order to gather team participation, we need to address team motivation. Belief in task significance has positive effects on moving members to participate. Coordination is a central to a successful collaboration, since it guides members’ participation. Incentive mechanisms can be used to foster online participation. We then conducted an experiment to analyze ...
Tópico(s): Open Source Software Innovations
2016 - Springer Science+Business Media | Lecture notes in business information processing
Produção Nacional
Revisado por pares
João Victor Manzoni de Oliveira, Stephanie Harue Massaki, Willian Caixeta Gutierres, Franciele Itati Kreutz, João Pedro Grespan Estodutto da Silva, Lilliam May Grespan Estodutto da Silva, Milena Wolff Ferreira,
Industrialized meat product, known as salami, is composed of some types of meat, such as pork, beef or pork and beef together, added ingredients and bacon. This research aimed to elaborate Italian salami using the fermentation process with standard starter bacteria, such as control, water and milk kefir, and evaluate the physicochemical and microbiological characteristics of the final product. The use of kefir grains aimed to analyze the possibility for their use in the production of salami as starter ...
Tópico(s): Probiotics and Fermented Foods
2021 - Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências | Research Society and Development