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Training on LSA lifeboat operation using Mixed Reality

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Virtual Reality & Intelligent Hardware 2023年第3期5卷 201-212页

作者： Spyridon Nektarios BOLIERAKIS margarita KOSTOVASILI Lazaros KARAGIANNIDIS Angelos AMDITIS I-SENSE Group National Technical University of Athens(NTUA)Zografou 15773Greece

Background This work aims to provide an overview of the Mixed Reality(MR)technology’s use in maritime industry for training *** training procedures cover a broad range of procedural operations for Life-Saving Appliances(LSA)lifeboats;however,several gaps and limitations have been identified related to the practical training that can be addressed through the use of ***,Virtual and Mixed Reality applications are already used in various fields in maritime industry,but their full potential have not been yet *** project aims to exploit MR advantages in the maritime training by introducing a relevant application focusing on use and maintenance of LSA *** An MR Training application is proposed supporting the training of crew members in equipment usage and operation,as well as in maintenance activities and *** application consists of the training tool that trains crew members on handling lifeboats,the training evaluation tool that allows trainers to assess the performance of trainees,and the maintenance tool that supports crew members to perform maintenance activities and procedures on *** each tool,an indicative session and scenario workflow are implemented,along with the main supported interactions of the trainee with the *** The application has been tested and validated both in lab environment and using a real LSA lifeboat,resulting to improved experience for the users that provided feedback and recommendations for further *** application has also been demonstrated onboard a cruise ship,showcasing the supported functionalities to relevant stakeholders that recognized the added value of the application and suggested potential future exploitation *** The MR Training application has been evaluated as very promising in providing a user-friendly training environment that can support crew members in LSA lifeboat operation and maintenance,while it is still subject to

关键词： Augmented Reality Mixed Reality Maritime training Cruise industry Lifeboat operation Lifeboat maintenance H2020 research project

A practical approach with drones,smartphones,and tracking tags for potential real-time animal tracking

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Current Zoology 2023年第2期69卷 208-214页

作者： Geison P Mesquita margarita Mulero-Pazmany Serge A Wich Jose Domingo Rodriguez-Teijeiro Department of Animal Biology Plant Biology and EcologyAutonomous University of Barcelona08193Cerdanyola del VallesBarcelonaSpain Instituto Baguacu de Pesquisa em Biodiversidade(IBPBio) 65050849Sao LuisMaranhaoBrazil Grupo de Biogeografia Diversidad y ConservacionDepartamento de Biologia AnimalFacultad de CienciasUniversidad de MalagaBlvr.Louis Pasteur3129010MalagaSpain School of Biological and Environmental Sciences Liverpool John Moores UniversityLiverpool L35UGUK Department of Evolutionary Biology Ecology and Environmental SciencesFaculty of BiologyUniversity of Barcelona08028BarcelonaSpain Biodiversity Research Institute(IRBio) University of BarcelonaBarcelona08193Spain

Drones are increasingly used for fauna monitoring and wildlife tracking;however,their application for wildlife tracking is restricted by developing such *** we explore the potential of drones for wildlife tracking using an off-the-shelf system that is easy to use by non-specialists consisting of a multirotor drone,smartphones,and commercial tracking devices via Bluetooth and Ultra-Wide Band(UWB).We present the system configuration,explore the operational parameters that can affect detection capabilities,and test the effectiveness of the system for locating targets by simulating target animals in savanna and forest *** self-contained tracking system was built without hardware or software *** 40 tracking flights carried out in the Brazilian Cerrado,we obtained a detection rate of 90%in savanna and 40%in forest *** for targets in movement(N=20),the detection rates were 90%in the savanna and 30%in the forest *** spatial accuracy obtained by the system was 14.61 m,being significantly more accurate in savanna(x=10.53)than in forest areas(x=13.06).This approach to wildlife tracking facilitates the use of drones by non-specialists at an affordable cost for conservation projects with limited *** reduced size of the tags,the long battery life,and the iower cost compared to GPS-tags open up a range of opportunities for animal tracking.

关键词： conservation drone small surveys wildlife tracking

Benchmarking of two three-dimensional numerical models in time/space domain to predict railway-induced ground vibrations

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Earthquake Engineering and Engineering Vibration 2021年第1期20卷 245-256页

作者： Jesus Fernandez-Ruiz Luis E.Medina Rodriguez Pedro Alves Costa margarita Martinez-Diaz University of La Coruna Department of Civil EngineeringCampus de ElvinaLa Coruna 15071Spain University of Porto Faculty of EngineeringRua Dr.Roberto Friass/n Porto4200-465Portugal University of La Coruna Department of Naval and Industrial EngineeringCampus de ElvinaLa Coruna 15071Spain

In the last 30 years,the scientific community has developed and proposed different models and numerical approaches for the study of vibrations induced by railway *** of them are formulated in the frequency/wave number domain and with a 2.5D ***-dimensional numerical models formulated in the time/space domain are less frequently used,mainly due to their high computational ***,these models present very attractive characteristics,such as the possibility of considering nonlinear behaviors or the modelling of excess pore pressure and non-homogeneous and non-periodic geometries in the longitudinal direction of the *** this study,two 3D numerical approaches formulated in the time/space domain are compared and experimentally *** first one consists of a finite element approach and the second one of a finite difference *** experimental validation in an actual case situated in Carregado(Portugal)shows an acceptable fitting between the numerical results and the actual measurements for both ***,there are some differences among *** study therefore includes some recommendations for their use in practical soil dynamics and geotechnical engineering.

关键词： railway vibrations time/space domain 3D numerical model finite difference method implicit finite element method

Triboelectric nanogenerator based on electrodeposited Ag octahedral nano-assemblies

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能源化学:英文版 2023年第8期83卷 478-495,I0012页

作者： M.Edith Navarro-Segura margarita Sanchez-Dominguez Ana Arizmendi-Morquecho J.Alvarez-Quintana Group of Colloidal and Interfacial Chemistry Applied to Nanomaterials and Nanoformulations Centro de Investigacion en Materiales Avanzados S.C Unidad MonterreyAlianza Norte#202Autopista Monterrey-Aeropuerto Km.10.C.P.66628 ApodacaNuevo LeonMexico GENES-Group of Embedded Nanomaterials for Energy Scavenging Centro de Investigacion en Materiales Avanzados S.C.Unidad MonterreyAlianza Norte#202Autopista Monterrey-Aeropuerto Km.10.C.P.66628 ApodacaNuevo LeonMexico

The tremendous potential of triboelectric generators-TENGs for converting mechanical energy into electrical energy places them as one of the most promising energy harvesting technologies. In this work, the fabrication of enhanced performance TENGs using Ag octahedron nano-assemblies on ITO as electrodes significantly increases the electric charge collection of the induced tribocharges. Thereby, nanostructured electrical contacts coated with Ag macroscale nano-assemblies with octahedral features were obtained by the electrodeposition technique on flexible PET/ITO substrates. Consequently, the nanostructured triboelectric generator-TENG exhibited 65 times more maximum output power, and almost 10 times more open circuit output voltage than that of a TENG with non-nanostructured contacts passing from μW to m W capabilities, which was attributed to the increment of intrinsic interface states due to a higher effective contact area in the former. Likewise, output performances of TENGs also displayed an asymptotic behavior on the output voltage as the operating frequency of the mechanical oscillations increased, which is attributed to a decrement in the internal impedance of the device with frequency. Furthermore, it is shown that the resulting electrical output power can successfully drive low power consumption electronic devices. On that account, the present research establishes a promising platform which contributes in an original way to the development of the TENGs technology.

关键词： Triboelectric generator Nanostructured electrodeposited electrodes Ag octahedral nanoassemblies Electrode surface structure

A comparative study of Epipactis atrorubens in two different forest communities of the Middle Urals, Russia

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Journal of Forestry Research 2020年第6期31卷 2111-2120页

作者： Elena Filimonova Natalia Lukina margarita Glazyrina Galina Borisova Tripti Adarsh Kumar Maria Maleva Laboratory of Anthropogenic Dynamics of Ecosystems Ural Federal UniversityEkaterinburgRussia 620002 Department of Experimental Biology and Biotechnology Ural Federal UniversityEkaterinburgRussia 620002

The objective of this study was to compare ecophysiological and morphological parameters of a regionally endangered orchid species,Epipactis atrorubens(*** Bernh.)Bess.,growing in two forest communities(on serpentine and granite outcrops)of the Middle Urals,***,dominance,and phytocoenosis studies showed the colonization of a wide range of plant species on both *** physicochemical properties of the soil,chemical composition and morphological features of ***,growing under technogenic conditions(asbestos deposits),on serpentine outcrops and in the natural environment of the granite massif were studied for the first *** serpentine substrate differed from the granite one by its greater stoniness,circumneutral pH and lower contents of available nitrogen and *** high concentrations of magnesium were found in the serpentine soil,some 79 times higher than in the granite *** concentrations of nickel(94 times),chromium(59 times),cobalt(17 times),and iron(4 times)were found in the serpentine substrate,higher than in the granite *** differences between the sites for available metal contents and for root and shoot metal contents were significantly *** of most of the metals in the roots were higher than in the *** higher metal concentrations and lower nitrogen and phosphorus levels in serpentine soils,*** had a larger population and greater viability compared to those growing on *** on serpentine outcrops were characterized by the formation of a larger number of fruits,greater root lengths and thicker leaf blades,compared to plants on *** well-developed orchid mycorrhizae contributed to the survival of this species under unfavorable serpentine ***,serpentine outcrops formed due to the mining of asbestos could be a suitable substrate for the light-demanding *** due to its capacity to adapt to dry,rocky,nutrient-depleted soils a

关键词： Orchids Forest phytocoenosis Serpentine Granite Metal accumulation

Microalgae Improve the Photosynthetic Performance of Rice Seedlings(Oryza sativa L.)under Physiological Conditions and Cadmium Stress

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Phyton-International Journal of Experimental Botany 2022年第7期91卷 1365-1380页

作者： Ekaterina Yotsova Martin Stefanov Georgi Rashkov margarita Kouzmanova Anelia Dobrikova Emilia Apostolova Institute of Biophysics and Biomedical Engineering Bulgarian Academy of SciencesSofiaBulgaria Department of Biophysics and Radiobiology Biological FacultySofia UniversitySofiaBulgaria

The aim of this study was to assess the impact of the microalgae Chlorella vulgaris on the rice seedlings at physiological conditions and under cadmium(Cd)*** examined the effects of *** in the nutrient solution on rice seedlings grown hydroponically in the presence and the absence of 150μM CdCl2,using the low(77 K)temperature and pulse amplitude modulated(PAM)chlorophyll fluorescence,P700 photooxidation measurements,photochemical activities of both photosystems,kinetic parameters of oxygen evolution,oxidative stress markers(MDA,H_(2)O_(2) and proline),pigment content,growth parameters and Cd *** revealed that the application *** not only stimulates growth and improves the functions of photosynthetic apparatus under physiological conditions,but also reduces the toxic effect of Cd on rice ***,the presence of the green microalgae in the nutrient solution of the rice seedlings during Cd exposure,signifi-cantly improved the growth,photochemical activities of both photosystems,the kinetic parameters of the oxygen-evolving reactions,pigment content and decreased lipid peroxidation,H_(2)O_(2) and proline *** showed that the alleviation of Cd-induced effects in rice seedlings is a result of the Cd sorption by microalgae,as well as the reduced Cd accumulation in the roots and its translocation from the roots to the shoots.

关键词： Chlorella vulgaris growth parameters low temperature chlorophyll fluorescence PAM chlorophyll fluorescence photosynthesis rice stress markers

STRASS Dehazing:Spatio-Temporal Retinex-Inspired Dehazing by an Averaging of Stochastic Samples

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Journal of Renewable Materials 2022年第5期10卷 1381-1395页

作者： Zhe Yu Bangyong Sun Di Liu Vincent Whannou de Dravo margarita Khokhlova Siyuan Wu School of Printing Packaging Engineering and Digital Media Xi’an University of TechnologyXi’an710048China Beijing Key Laboratory of Big Data Technology for Food Safety Beijing Technology and Business UniversityBeijing100048China Key Laboratory of Spectral Imaging Technology CAS Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an710119China LASTIG UniversitéGustave EiffelÉcully69134France

In this paper,we propose a neoteric and high-efficiency single image dehazing algorithm via contrast enhancement which is called STRASS(Spatio-Temporal Retinex-Inspired by an Averaging of Stochastic Samples)dehazing,it is realized by constructing an efficient high-pass filter to process haze images and taking the influence of human vision system into account in image dehazing *** novel high-pass filter works by getting each pixel using RSR and computes the average of the *** the low-pass filter resulting from the minimum envelope in STRESS framework has been replaced by the average of the *** final dehazed image is yielded after iterations of the high-pass *** can be run directly without any machine *** experimental results on datasets prove that STRASS surpass the *** dehazing can be applied in the field of printing and packaging,our method is of great significance for image pre-processing before printing.

关键词： Image dehazing contrast enhancement high-pass filter image reconstruction

Classification of the firmness of peaches by sensor fusion

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International Journal of Agricultural and Biological Engineering 2015年第6期8卷 104-115,I0002页

作者： Kubilay Kazim Vursavus Yesim Benal Yurtlu Belen Diezma-Iglesias Lourdes Lleo-Garcia margarita Ruiz-Altisent Department of Agricultural Machinery and Technologies Engineering Faculty of AgricultureÇukurova University01330 AdanaTurkey Department of Agricultural Machinery and Technologies Engineering Faculty of AgricultureOndokus Mayıs UniversitySamsunTurkey LPF-Tagralia Department of Agricultural EngineeringTechnical Polytechnic University of MadridAvda.Computense s/n28040 MadridSpain

The objectives of this research were to compare the performance of each individual nondestructive sensor with the destructive sensor,and to apply sensor fusion technique to explore whether a combination of sensors would give better results than a single sensor for classification of peach *** were carried out with four peach varieties namely Royal Glory,Caterina,Tirrenia and *** this research,the three nondestructive firmness sensors acoustic firmness,low-mass impact and micro-deformation impact were used to measure firmness.A Bayesian classifier was chosen to provide a classification into three categories,namely soft,intermediate and *** level fusion technique was performed by using identity declaration provided by each *** data fusion system processed the information of the sensors to output the fused *** result of the high level fusion was compared with the classification provided by an unsupervised algorithm based on destructive reference *** fusion process of the nondestructive sensors provided some improvements in the firmness classification;the error rate varied from 25%to 19%for individual ***,the results of fusion process by using three sensors decreased the error rate from 19%to 13%.This research demonstrated that the fused systems provided more complete and complementary information and,thus,were more effective than individual sensors in the firmness classification of peaches.

关键词： peach firmness classification nondestructive sensor high level fusion Bayesian classifier

Limited proteomic response in the marine snail Melarhaphe neritoides after long-term emersion

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Current Zoology 2017年第5期63卷 487-493页

作者： Angel R DIZ margarita ALVAREZ-RODRiGUEZ Monica R. ROMERO Emilio FOLAN-ALVAREZ Juan GALINDO Department of Biochemistry Genetics and Immunology Faculty of Biology University of Vigo Vigo 36310 Spain Toralla Marine Science Station (ECIMAT) Universidad de Vigo Vigo 36331 Spain Institute of Marine Research (IIM) CSIC Vigo 36208 Spain

Rocky intertidal organisms are commonly exposed to environmental gradients, promoting adapta-tions to these conditions. Emersion time varies along the intertidal range and in the supralittoralzone is frequently larger than a single tidal cycle, even lasting for weeks. The planktonic-dispersinggastropod Melarhaphe neritoides is a common species of the high shore, adapted to reduce waterloss in order to survive during long-term emersion. In this study, we investigated the molecular re-sponse, at the proteome level, of M. neritoides collected in high-shore tide pools to a series ofemersion periods, from 8 to 24 days, in laboratory conditions. We compared this response to indi-viduals maintained submerged during this period, because this was their original habitat. We alsoincluded a reversion treatment in the study, in which emersed individuals were returned to the sub-merged conditions. Although we detected an increase in overall protein concentration with longeremersion periods, contrary to general expectation, the two dimensional electrophoresis （2DE）-based proteomic analysis did not show significant differences between the treatments at the levelof individual protein spots, even after an emersion period of 24 days. Our results suggest that themetabolism remains unaltered independent of the treatment carried out or the changes are verysubtle and therefore difficult to detect with our experimental design. We conclude that M. neri-toides could be equally adapted to emersion and submersion without drastic physiologicalchanges.

关键词： daptation, 2DE proteomics, environmental gradient, intertidal zone, metabolic rate depression.