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Building Simulation 2023年第7期16卷 1273-1286页

作者： Shane ferreira Burak Gunay Araz Ashouri Scott Shillinglaw Carleton University OttawaK1S 5B6Canada National Research Council Canada OttawaK1A 0R6Canada

Characterization of an existing building’s energy-related features is critical to inform maintenance and retrofit ***,existing field-scale characterization methods tend to be labour intensive,invasive,and require high fidelity longitudinal data gathered through tightly regulated *** highlights the need for a low cost,scalable,and efficient screening *** paper puts forward a surrogate model-based approach to rapidly estimate energy-related building *** this end,EnergyPlus models for 12 midrise office archetypes,all with a rectangular footprint,are *** thousand variants of each archetype are generated by altering envelope,causal heat gain,and heating,ventilation,and air conditioning operation features.A unique load signature is derived for each variant’s heating and cooling energy *** parameters of the load signatures are clustered,then each cluster is associated with a set of plausible energy-related *** accuracy of the results was evaluated using five test buildings not seen by the *** method could effectively identify building features with reasonable accuracy and no significant degradation in performance across all 12 archetypes.

关键词： remote characterization energy-related building features surrogate modelling cluster analysis

Conflictive management of small mammals considered as pests： A long way to evidence-based policy making

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Current Zoology 2012年第2期58卷 353-357页

作者： Catarina ferreira Miguel DELIBES-MATEOS Instituto de Investigacion en Recursos Cinegeicos IREC （CSIC-UCLM-JCCM） Ronda de Toledo s/n E-13071 Ciudad Real SPAIN CIBIO Centro de Investigacao em Biodiversidade e Recursos Geneticos Campus Agrario de Vairao 4485-661 Vairao PORTUGAL

This paper discusses the controversial management decisions made by policy-makers worldwide regarding poisoning campaigns aimed to control small mammal populations, often considered harmful economic pests. Aside from considerations re- garding the biological consequences of these campaigns, we argue that when society rejects all values of science and expertise then only badly supported and negligent decisions will be made about conservation and management issues. The extermination of small mammal species, some of which play crucial ecological roles in several regions of the world, is just an example of such discredit and misinformation. Without a strong commitment towards evidence-based policy-making, economic investments in re- search and development could be entirely compromised

关键词： Evidence-based policy Pest management Poisoning campaigns Small mammals

A Chopper Negative-R Delta-Sigma ADC for Audio MEMS Sensors

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Computer Modeling in Engineering & Sciences 2022年第2期130卷 607-631页

作者： Jamel Nebhen Pietro M.ferreira College of Computer Engineering and Sciences Prince Sattam bin Abdulaziz UniversityAlkharj11942Saudi Arabia Universit´e Paris-Saclay Centrale SupelecCNRSLaboratory de G´enie Electrique et Electronique de ParisGif-sur-Yvette91192France Sorbonne Universite CNRSLab.de Genie Electrique et Electronique de ParisParis75252France

This paper presents a proposed low-noise and high-sensitivity Internet of Thing(IoT)system based on an M&NEMS *** IoT device consists of an M&NEMS resistive accelerometer associated with an electronic readout circuit,which is a silicon nanowire and a Continuous-Time(CT)△∑*** first integrator of the△∑ADC is based on a positive feedback DC-gain enhancement two-stage amplifier due to its high linearity and low-noise *** mitigate both the offset and 1/f noise,a suggested delay-time chopper negative-R stabilization technique is applied around the first integrator.A 65-nm CMOS process implements the CT△∑*** supply voltage of the CMOS circuit is 1.2-V while 0.96-mW is the power consumption and 0.1-mm^(2) is the silicon *** M&NEMS microphone and△∑ADC complete circuit are fabricated and *** a working frequency bandwidth of 20-kHz,the measurement results of the proposed IoT system reach a signal to noise ratio(SNR)of ***,it has a measured dynamic range(DR)of 108-dB and a measured signal to noise and distortion ratio(SNDR)of 101.3-dB.

关键词： M&NEMS sensor △∑ ADC chopper negative-R IoT 1/f noise SNR

Lessons learnt from a deep excavation for future application of the observational method

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Journal of Rock Mechanics and Geotechnical Engineering 2018年第3期10卷 468-485页

作者： Raul Fuentes Anton Pillai Pedro ferreira School of Civil Engineering University of LeedsLeedsLS2 9JTUK Ove Arup and Partners 13 Fitzroy StreetLondonW1T 4BQUK Department of Civil Environmental&Geomatic EngineeringUniversity College LondonChadwick BuildingGower StreetLondonWC1E 6BTUK

This paper draws lessons learnt from a comprehensive case study in overconsolidated clay. Apart from the introduction of the case study, including field measurements, the paper draws on the observations and a three-dimensional（3 D） numerical analysis to discuss the implications of observations in the application of the observational method（OM） in the context of the requirements of EUROCODE 7（EC7）.In particular, we focus on corner effects and time-dependent movements and provide initial guidance on how these could be considered. Additionally, we present the validation of a new set of parameters to check that it provides a satisfactory compliance with EC7 as a set of design parameters. All these findings and recommendations are particularly important for those who want to use the OM in similar future projects.

关键词： Deep excavation Basement Ground movements Wall movements Retaining wall Corner effects Time-dependent movements

Machine learning applied to road safety modeling:A systematic literature review

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Journal of Traffic and Transportation Engineering(English Edition) 2020年第6期7卷 775-790页

作者： Philippe Barbosa Silva Michelle Andrade Sara ferreira Department of Civil Engineering Goiano Federal Institute-Rio Verde CampusRio Verde 75901-970Brazil Department of Civil and Environmental Engineering University of BrasiliaBrasilia 70910-900Brazil Research Centre for Territory Transports and EnvironmentUniversity of PortoPorto 4200-465Portugal

Road safety modeling is a valuable strategy for promoting safe mobility,enabling the development of crash prediction models(CPM)and the investigation of factors contributing to crash *** modeling has traditionally used statistical techniques despite acknowledging the limitations of this kind of approach(specific assumptions and prior definition of the link functions),which provides an opportunity to explore alternatives such as the use of machine learning(ML)*** study reviews papers that used ML techniques for the development of CPM.A systematic literature review protocol was conducted,that resulted in the analysis of papers and their *** types of models were identified:crash frequency,crash classification by severity,and crash frequency and *** first is a regression problem,the second,a classificatory one and the third can be approached either as a combination of the preceding two or as a regression model for the expected number of crashes by severity *** main groups of techniques used for these purposes are nearest neighbor classification,decision trees,evolutionary algorithms,support-vector machine,and artificial neural *** last one is used in many kinds of approaches given the ability to deal with both regression and classification problems,and also multivariate response *** paper also presents the main performance metrics used to evaluate the models and compares the results,showing the clear superiority of the ML-based models over the statistical *** addition,it identifies the main explanatory variables used in the models,which shows the predominance of road-environmental aspects as the most important factors contributing to crash *** review fulfilled its objective,identifying the various approaches and the main research characteristics,limitations,and opportunities,and also highlighting the potential of the usage of ML in crash analyses.

关键词： Transportation engineering Road safety modeling Crash prediction Crash injury severity Machine learning Systematic literature review

Spent coffee grounds as a renewable source of energy: An analysis of bulk powder flowability

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Particuology 2019年第2期17卷 92-100页

作者： L. Massaro Sousa M.C. ferreira Drying Center for Pastes Suspensions and Seeds. Chemical Engineering Department Federal University of Sao Carlos. P.O. Box 676 13565-905 Sao Carlos Brazil

The main use for spent coffee grounds (SCG) produced in the soluble coffee industry is thermal energy generation in the industry itself. The SCG are processed using operations that are strongly dependent on powder flow behavior. In this study, we evaluated two classical flowability in dices of non-consolidated SCG powders: the angle of repose (AoR), and the Hausner ratio (HR). The influences of the mean particle diameter, particle size distribution (PSD), and water content on the AoR and HR values of SCG were analyzed for powders with a mean particle size range of 225-550 μm. For powders with a mean particle size close to 350 μm and for mixtures containing more than 40% fine particles, the HR (>1.35) and AoR (>45 °) values were characteristic of poor flowability. The AoR was sensitive to the powder PSD, and powders with similar mean particle sizes had higher AoR values when the PSD was larger. For powders w让h water contents up to 50%, the flowability indices were not greatly affected by the water content. A modified linear-mixture packing model was used to predict the packed bed void fractions for binary and ternary mixtures of the three base powders. The model was used to construct a ternary diagram to estimate the HR values of the mixtures. An equation was fitted to correlate HR and AoR. The proposed diagram and the equation provide insight into flow behavior and could be used for process design of industrial plants that handle SCG.

关键词： Spent coffee ground Biomass Flowability Hausner ratio Angle of repose

Recent Advances and Challenges Toward Application of Fibers and Textiles in Integrated Photovoltaic Energy Storage Devices

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Nano-Micro Letters 2023年第3期15卷 190-247页

作者： Amjid Rafique Isabel ferreira Ghulam Abbas Ana Catarina Baptista CENIMAT|I3N Department of Materials ScienceSchool of Science and TechnologyNOVA University LisbonCampus de Caparica2829‑516 CaparicaPortugal

Flexible microelectronic devices have seen an increasing trend toward development of miniaturized,portable,and integrated devices as wearable electronics which have the requirement for being light weight,small in dimension,and *** three-dimensional(3D)and two-dimensional(2D)electronics gadgets fail to effectively comply with these necessities owing to their stiffness and large *** have come up with a new family of one-dimensional(1D)flexible and fiber-based electronic devices(FBEDs)comprising power storage,energy-scavenging,implantable sensing,and flexible displays ***,development and manufacturing are still a challenge owing to their small radius,flexibility,low weight,weave ability and integration in textile *** paper will provide a detailed review on the importance of substrates in electronic devices,intrinsic property requirements,fabrication classification and applications in energy harvesting,energy storage and other flexible electronic ***-and textile-based electronic devices for bulk/scalable fabrications,encapsulation,and testing are reviewed and presented future research ideas to enhance the commercialization of these fiber-based electronics devices.

关键词： Flexible electronics Electronic textiles Energy harvesting Supercapacitors Photovoltaic devices

Two-proton sequential decay from excited states of ^(18)Ne

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Nuclear Science and Techniques 2013年第5期24卷 89-91页

作者： YU Ningal MAGLIONE Enrico ferreira Lidia Institute of Particle Physics Huazhong Normal University Dipartimento di Fisica "G.Galilei" PadovaItaly and Istituto Nazionale di Fisica Nucleare Centro de Física das Interac es Fundamentais and Departmento de FísicaInstituto Superior Técnico

Two-proton radioactivity from18Ne is discussed in terms of sequential *** branch ratios for oneproton emission from excited states are calculated,which including spectroscopic factors,obtained from a Shellmodel calculation with realistic *** branch ratios show that the two-proton emission from the 1-state of 18Ne at 7.94 MeV is most likely to go through the sequential *** same mechanism is discussed for other excited states at higher energy by different interactions.

关键词：质子衰变激发态质子发射分支比放射性壳模型衰减计算

Seasonal testicular changes in Dendropsophus minutus Peters, 1872 (Anura, Hylidae)

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BIOCELL 2012年第2期36卷 57-62页

作者： ADELINA ferreira MAHMOUD MEHANNA Universidade Federal de Mato Grosso(UFMT) Instituto de BiociênciasCuiabáMTBrasil Universidade Estadual Paulista Julio de Mesquita Filho(UNESP) Laboratório de Biologia de PeixesPós-graduação em ZoologiaBotucatuSPBrasil

The reproductive cycle in anurans may be either continuous or *** differences may be connected to seasonal climate changes and/or to anthropic *** adult male individuals of the Dendropsophus minutus species were collected during one year,in the municipality of Chapada dos Guimarães(Mato Grosso,Brazil).The testicles were studied under light and transmission electron *** variations were observed when the diameter of the seminiferous tubules and the thickness of the interstitial tissue were ***,changes in spermatogenesis were conspicuous and indicated that the reproductive cycle of *** in Chapada dos Guimarães is discontinuous and seems related to variations in air temperature and rainfall.

关键词： spermatogenesis reproduction anura ultrastructure Chapada dos Guimarães

Fluidized and vibrofluidized shallow beds of fresh leaves

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Particuology 2011年第2期9卷 139-147页

作者： Renata de Aquino Brito Lima Maria do Carmo ferreira Drying Center of Pastes Suspensions and SeedsChemical Engineering DepartmentFederal University of S o Carlos

The fluid dynamics behavior of shallow fluidized and vibrofluidized beds operating with fresh leaves was investigated with the aim of exploring drying applications in a modified conveyor belt （MCB） system, which may be operated in a fixed- or fluidized-bed mode. Leaves of the specimens Duranta repens, Schinus molle, Coleus barbatus, Buxus sempervirens, and Bougainvillea spectabilis were tested with a range of sphericities from 0.063 to 0.213, bulk densities from 0.038 to 0.251 g/cm3, apparent densities from 0.52 to 0.97 g/cm3 and ratios of total surface area to volume from 21 to 224 cm-1. Fluidization characteristic curves were obtained by measuring pressure drops versus air velocity in a rectangular column of 0.20 m - 0.11 m cross section. It was not possible to reach real fluidized regimes with the leaves due to strongly non-homogeneous beds. Nevertheless, the characteristic curves allowed for the identification of a transition regime from fixed- to expanded-beds, and parameters such as air velocity and pressure drop obtained from the experimental data at the transition were reproducible for specimens with lower surface area or lower specific gravity （i.e., Duranta repens, Schinus molle, and Bougainvillea spectabilis）. The transition velocity and pressure drop could not be predicted by the literature developed for estimat- ing minimum fluidization conditions. The use of vibration at dimensionless vibration parameters （Γ） of 0.5 and 1.0 helped to reduce channeling and decrease the transition velocities from fixed to expanded regimes although it did not affect the pressure drops after the bed expansion. The results suggest that drying fresh leaves using the MCB dryer operating in a fluidized mode would not be feasible because none of the materials investigated attained a high-quality fluidization. Operation of the MCB dryer may be pos- sible by alternating between the fixed and vibrofluidized modes. For the specimens tested, the drying should be performed in a range

关键词： LeavesLow-sphericity particlesPressure dropsFluidizationVibration