Article
Computer Science, Hardware & Architecture
Yi Chu, Paul Mitchell, David Grace, Jonathan Roberts, Dominic White, Tautvydas Mickus
Summary: This paper presents IRIS, a lightweight cross-layer protocol designed for long-range pipeline wireless sensor networks with extremely low power budget. It includes network discovery, medium access control, and routing functions for heavily energy constrained networks. The protocol can operate with less than 1% duty cycle, conforming to ISM band regulations in the 868MHz band. Simulation results demonstrate guaranteed route formation in different network topologies with various protocol configurations.
Article
Green & Sustainable Science & Technology
Antonio Garcia, Javier Monsalve-Serrano, Santiago Martinez-Boggio, Wenbin Zhao, Yong Qian
Summary: Electrified powertrains have experienced significant growth in recent years, but the right choice for heavy-duty vehicles remains unclear. This study examines the potential of hybrid powertrains running in an advanced combustion mode, Intelligent Charge Compression Ignition, with different renewable energy fuels. The results show that pure electric buses can greatly reduce CO2 emissions, while hybrid powertrains with renewable fuels can also achieve significant emission reductions.
Article
Construction & Building Technology
Shemin T. John, Pradip Sarkar, Robin Davis
Summary: Long Range (LoRa) technology plays a crucial role in Internet of Things applications for the construction industry. This paper investigates the impact of transmission parameters on energy efficiency and proposes a scheme to improve the energy efficiency of LoRa end nodes.
AUTOMATION IN CONSTRUCTION
(2022)
Article
Energy & Fuels
Ayoub Aroua, Walter Lhomme, Eduardo Redondo-Iglesias, Florian Verbelen
Summary: This study investigates the potential of using an electrical variable transmission for hybridizing long-haul trucks. By comparing the fuel consumption of three powertrain topologies, it is found that a geared topology with two gearboxes provides the maximum fuel reduction. Additionally, the study finds that the sizing of powertrain components has an impact on fuel consumption, with fuel reduction ranging from 3.3% to 14.2% for different sizes. The results demonstrate that the electrical variable transmission has the potential to reduce fuel consumption when combined with an appropriate powertrain topology and sizing.
Article
Computer Science, Information Systems
Sabrine Khriji, Rym Cheour, Olfa Kanoun
Summary: This paper aims to experimentally implement a hybrid energy management solution combining DVFS and duty-cycling to improve energy efficiency of IoT services. Hardware optimization is performed by selecting the low-power microcontroller MSP430. The energy-saving design is evaluated by defining normalized power. Extensive simulations and real-world implementations show that energy consumption can be significantly reduced in high-data IoT use cases.
Article
Computer Science, Interdisciplinary Applications
Dushyant Kumar Singh, Rajeev sobti
Summary: Urbanization poses a major challenge to cities, putting stress on resources like transportation, health system, economy, and safe food supply. Advanced solutions with a human-centric approach, such as Society 5.0, smart cities, and urban agriculture, are needed for sustainable development. This article highlights the importance of urban agriculture and discusses a design for Precision Irrigation that addresses challenges in field monitoring and offers a scalable solution based on soil and weather conditions.
COMPUTERS & INDUSTRIAL ENGINEERING
(2022)
Article
Thermodynamics
Jin Yu, Xiaohan Dong, Yurun Song, Yangguang Zhang, Huasen Zhang, Xianshen Yang, Zhongjie Xu, Yupeng Liu
Summary: The concept of carbon neutrality has prompted scholars to explore new energy utilization and improve energy management for traditional energy. The optimized transmission characteristic parameters of CCHMT-4, obtained through algorithm optimization, result in better static and dynamic characteristics compared to CCHMT-3. Experimental results confirm the improved operational performance of CCHMT-4.
Article
Engineering, Electrical & Electronic
Philipp Mayer, Michele Magno, Armin Berger, Luca Benini
Summary: This study combines RTK technology with low-power long-range communication to propose a geolocation system that achieves submeter precision in an energy-efficient mode. Experimental results demonstrate that high-precision geolocation can be achieved with specific techniques over distances of several kilometers between the wireless end node and the ground reference anchor point.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Agriculture, Multidisciplinary
Luca Bondesan, Brenda V. Ortiz, Franciele Morlin, Guilherme Morata, Leah Duzy, Edzard van Santen, Bruno P. Lena, George Vellidis
Summary: Adopting water-conservation irrigation practices can reduce water and energy usage, increase profitability, and protect the environment. This study compared precision irrigation techniques with conventional uniform irrigation and found that the combination of soil sensors and variable rate irrigation can accurately determine irrigation rates and prevent over- or under-irrigation.
PRECISION AGRICULTURE
(2023)
Article
Agronomy
Silas Alves Souza, Lineu Neiva Rodrigues
Summary: This study evaluates the profitability and energy savings potential of precision irrigation in the soybean crop in the Brazilian Cerrado region. By simulating the irrigation demand, the study finds the energy savings potential and profitability increase potential in both rainy and dry years. The results indicate that the use of precision irrigation can significantly improve economic returns and reduce energy consumption.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Energy & Fuels
Zhichao Liu, Shaohui Liu, Tianlei Zheng, Xiang Bao
Summary: This paper focuses on the research and optimization of the evaluation method for energy consumption and E-range of heavy-duty plug-in hybrid electric vehicles. The improved evaluation method has achieved good results in experimental verification.
Article
Automation & Control Systems
Guohua Zhou, Qingxin Tian, Haoze Li
Summary: A series of three-port forward converters with a compact structure and extended duty cycle range is proposed for standalone renewable energy systems. These converters are derived from conventional two-switch forward converters using bidirectional power-flow port embedding and switch device sharing. Compared to the conventional converters, the proposed converters have a compact structure and low cost, with only one additional switch and diode for bidirectional power flow characteristics in the energy storage port. The embedding of the energy storage port also extends the duty cycle range of the converters, eliminating the need for a duty cycle of less than 0.5.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Multidisciplinary Sciences
Tiago M. F. F. Gomes, Gabriel L. Wallau, Elgion L. S. Loreto
Summary: Wolbachia is an intracellular bacterial endosymbiont found in insects and other invertebrates, with a high level of genetic similarity to its hosts. This suggests that host shift, the direct transmission of Wolbachia cells between different species, occurs more frequently than expected.
SCIENTIFIC REPORTS
(2022)
Article
Energy & Fuels
Nanjian Qi, Yajiang Yin, Keren Dai, Chengjun Wu, Xiaofeng Wang, Zheng You
Summary: This study presents a new hybrid energy storage system design to extend the lifetime of wireless sensor network nodes, successfully increasing the battery lifetime to over three times that of existing systems. The new system features a two-port hybrid diode topology and an adaptive supercapacitor buffer energy management strategy, reducing energy loss and costs.
Article
Multidisciplinary Sciences
Xingyu Chen, Dongning Chen, Ehsan Ban, Kimani C. Toussaint, Paul A. Janmey, Rebecca G. Wells, Vivek B. Shenoy
Summary: Cells can sense and respond to mechanical forces in fibrous extracellular matrices, and this phenomenon, known as long-range force transmission, is influenced by the presence of glycosaminoglycans (GAGs) in the matrix. GAGs increase the stiffness of the collagen network and hinder the alignment of collagen fibers, thus impeding cellular force transmission over long distances.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Agricultural Engineering
Nicolas D. Cano, Antonio P. de Camargo, Gustavo L. Muniz, Jonesmar de Oliveira, Jose G. Dalfre Filho, Jose A. Frizzone
Summary: This study evaluates three methodologies for orifice-plate water-flow estimation, quantifying errors in flow determinations to propose appropriate measurement ranges for each condition. The Reader-Harris/Gallagher equation adequately estimates the discharge coefficient, while empirical equations demonstrate smaller measurement errors and greater rangeability of flow meters.
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL
(2021)
Article
Agricultural Engineering
Ana C. S. de Araujo, Jose A. Frizzone, Antonio P. de Camargo, Diego J. de S. Pereira, Veronica G. M. L. de Melo, Wagner W. A. Bombardelli
Summary: This study quantified the impact of water temperature variations on the discharge of collapsible thin-walled drip tapes with integrated non-pressure-compensating emitters. Different emitter models showed varying responses to temperature changes, with some seeing an increase in discharge while others experienced a decrease, with the greatest variations occurring at certain pressure ranges. Wall thickness did not have a significant effect on discharge variation.
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL
(2021)
Article
Agricultural Engineering
Wagner W. A. Bombardelli, Antonio P. Camargo, Luiz H. A. Rodrigues, Jose A. Frizzone
Summary: The study developed machine learning models to predict minor losses caused by fittings commonly used in microirrigation subunits, with the multilayer perceptron (MLP) model showing the best performance. These models can be used and compared through an open-source web application, serving as an online tool for designing and simulating minor losses.
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING
(2021)
Article
Agricultural Engineering
Veronica G. M. L. de Melo, Jose A. Frizzone, Leonardo L. de Melo, Antonio P. de Camargo
Summary: Irrigation system capacity should not be solely determined by average or maximum values, but should also consider expected lifespan, irrigation interval, and frequency distribution of maximum ET0 values.
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL
(2021)
Article
Computer Science, Information Systems
Fernando Rodrigues de Sa, Ricardo Godoi Vieira, Adilson Marques da Cunha
Summary: This article discusses the experience of implementing Scrum in a hierarchical organization, specifically the Brazilian Air Force. Despite the apparent conflict between Scrum teams and military groups, the key to success was the support from the institution and the valuable teachings from military pilots. The main contribution of this article is the lessons learned that can inspire other organizations to adopt Scrum and Agile practices. The ultimate goal is to make the Brazilian Aeronautics Computing Center a reference in Agile Methods within the Brazilian Air Force.
Article
Agricultural Engineering
Nicolas D. Cano, Antonio P. Camargo, Nassim Ait-Mouheb, Gustavo L. Muniz, Jhonnatan A. Y. Guarnizo, Diego J. S. Pereira, Jose A. Frizzone
Summary: Filtration is essential in drip irrigation systems to remove physical contaminants and optimize system performance. This study investigates the hydraulic performance and flow behavior of an automatic flushing strainer-type filter and proposes improvements in filter housing dimensions and operating flow rates.
BIOSYSTEMS ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Camila M. Costa, Antonio P. Camargo, Eric Alberto da Silva, Jose Mauricio S. Bento
Summary: An automated barometric chamber was designed for researching arthropod behaviors and insect-plant interactions in the laboratory. By changing the barometric pressure, researchers can observe the characteristics of arthropod and plant growth, behavior, and interactions. The control system ensures a stable barometric pressure and two experiments demonstrated the impact of barometric pressure on insect feeding activity.
APPLIED SCIENCES-BASEL
(2022)
Article
Agronomy
Gustavo L. Muniz, Antonio P. Camargo, Filipe Signorelli, Celso A. Bertran, Diego J. S. Pereira, Jose A. Frizzone
Summary: This study investigates the fouling process of calcium carbonate in dripper prototypes in the presence and absence of suspended solid particles (SSP). The presence of SSP reduces the fouling of the labyrinth walls and changes the crystal habit of CaCO3. One type of prototype is resistant to clogging while the other is prone to clogging.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Agronomy
Marcos Antonio Correa Matos do Amaral, Rubens Duarte Coelho, Jefferson de Oliveira Costa, Diego Jose de Sousa Pereira, Antonio Pires de Camargo
Summary: Emitter clogging is a common problem in drip irrigation systems, which can be caused by physical, chemical, or biological factors. Research shows that pulses of soil particles are one of the main causes of clogging, and the discharge from the emitters, particle size, concentration of contaminants, and orientation of installation all have an impact on clogging.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Computer Science, Artificial Intelligence
Dicksiano C. Melo, Marcos R. O. A. Maximo, Adilson Marques da Cunha
Summary: This article presents an implementation of a Push Recovery controller that improves the performance of a walking engine used by a simulated humanoid agent. The Proximal Policy Optimization is applied to learn a movement policy in this simulation. The proposed approaches based on Transfer Learning and Imitation Learning achieve a final policy that performs well across a wide range of disturbance directions.
JOURNAL OF INTELLIGENT & ROBOTIC SYSTEMS
(2022)
Article
Chemistry, Analytical
Rodrigo Leme de Paulo, Angel Pontin Garcia, Claudio Kiyoshi Umezu, Antonio Pires de Camargo, Fabricio Theodoro Soares, Daniel Albiero
Summary: Precision Irrigation (PI) is a promising technique that uses site-specific data to monitor and control water use for meeting crop water requirements. This paper presents the development of a low-cost water stress detection system using infrared (IR) sensors and image processing. The results show that low-cost IR sensors can accurately measure plant temperature, generate thermal maps, and identify water stress conditions.
Article
Agricultural Engineering
Nicolas D. Cano, Antonio Pires de Camargo, Gustavo L. Muniz, Jhonnatan A. Y. Guarnizo, Jose A. Frizzone
Summary: Proper selection, sizing, and maintenance of a filtration system are crucial for the efficient functioning of a microirrigation system. This study proposes a method for determining the actual filtration grade of irrigation filters by evaluating the removal efficiency under controlled conditions. The methodology can be used to assess the filtration grade of different types of filters.
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING
(2023)
Article
Environmental Sciences
Gustavo Lopes Muniz, Agda Loureiro Goncalves Oliveira, Maria Geralda Benedito, Nicolas Duarte Cano, Antonio Pires de Camargo, Ariovaldo Jose da Silva
Summary: In this study, the hydrogeochemistry of 350 underground wells in the state of Minas Gerais, Brazil, was analyzed to identify the water-chemical parameters contributing to emitter clogging in drip irrigation systems. Risk assessment maps were generated for each parameter and the area was classified into different water-use restriction levels. Interpolation methods and multivariate analysis were employed to analyze the data. The results revealed strong correlations between pH and various chemical parameters and identified three possible mechanisms contributing to emitter clogging in the study area.
Article
Agronomy
Luiz Ricardo Sobenko, Bruna Dalcin Pimenta, Antonio Pires de Camargo, Adroaldo Dias Robaina, Marcia Xavier Peiter, Jose Antonio Frizzone
Summary: This study investigates the performance of statistical indicators for evaluating models in irrigation hydraulics. Three typical case studies were analyzed and it is recommended to avoid efficiency-based indicators, correlation coefficients, determination coefficients, and agreement indices in modeling of irrigation hydraulics.
ACTA SCIENTIARUM-AGRONOMY
(2023)
