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Journal articles on the topic 'Matrice 100'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Maya-Gress, Kristian Freyri, Raúl Villafuerte-Segura, Hugo Romero-Trejo, and Miguel Ángel Bernal-Reza. "Puesta en operación y modelado de un cuatrirotos: Matrice 100 de DJI." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 9, no. 17 (2021): 67–75. http://dx.doi.org/10.29057/icbi.v9i17.6462.

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En la actualidad el empleo de vehículos aéreos no tripulados (VANT) es muy recurrente en diversas aplicaciones industriales, comerciales, ambientales, académicas, investigación, entre otras. Uno de los temas centrales de estos vehículos es su correcta manipulación/control en ausencia del ser humano. Sin embargo, esto no se puede alcanzar sin la puesta en operación y el empleo de modelos matemáticos. En este manuscrito se presenta la puesta en operación del VANT conocido como Matrice 100 de DJI, además del empleo de las técnicas más recurrente encontradas en la literatura para la obtención de s

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Sèbe, Gilles. "Fonctionnalisation chimique des fibres pour le contrôle de l'interface fibre/matrice des composites à renforts naturels." Revue des composites et des matériaux avancés 16, no. 1 (2006): 89–100. http://dx.doi.org/10.3166/rcma.16.89-100.

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Çakır, Abdülkadir, and Seyit Akpancar. "ROS-Based Control of the DJI Matrice 100 Robot with QR Images Obtained from DJI Guidance." International Journal of Engineering Trends and Technology 68, no. 1 (2020): 45–50. http://dx.doi.org/10.14445/22315381/ijett-v68i1p206.

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P, Vishva, Nivethitha P V, Sowndarya Lakshmi V, Vithun S S, and Manavaalan G. "Android Application to Control Commercial UAV." March 2023 5, no. 1 (2023): 83–95. http://dx.doi.org/10.36548/jucct.2023.1.006.

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Unmanned Aerial Vehicles (UAVs) have been used in many industries because they can fly out of sight, maximize production, reduce costs and risks, while ensuring visual security and safety for human workers during pandemics. A commercial drone is typically controlled and navigated using a remote control and a mobile application. Mobile apps are used to visualize the drone's coordinates on a map. There is no direct mobile app for controlling a developer drone like the DJI Matrice 100. This research presents a mobile application for controlling a DJI drone as well as a sensor system for providing

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Tikhomirov, Alexey B., Glen Lesins, and James R. Drummond. "Drone measurements of surface-based winter temperature inversions in the High Arctic at Eureka." Atmospheric Measurement Techniques 14, no. 11 (2021): 7123–45. http://dx.doi.org/10.5194/amt-14-7123-2021.

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Abstract. The absence of sunlight during the winter in the High Arctic results in a strong surface-based atmospheric temperature inversion, especially during clear skies and light surface wind conditions. The inversion suppresses turbulent heat transfer between the ground and the boundary layer. As a result, the difference between the surface air temperature, measured at a height of 2 m, and the ground skin temperature can exceed several degrees Celsius. Such inversions occur very frequently in polar regions, are of interest to understand the mechanisms responsible for surface–atmosphere heat,

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B., Adithya, Pavan N., Young Chai, and Ashok Patil. "Inspired by Human Eye: Vestibular Ocular Reflex Based Gimbal Camera Movement to Minimize Viewpoint Changes." Symmetry 11, no. 1 (2019): 101. http://dx.doi.org/10.3390/sym11010101.

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Human eyeballs move relative to the head, resulting in optimal changes in the viewpoint. We tested similar vestibular ocular reflex (VOR)-based movement on Zenmuse-X3 gimbal camera relative to pre-defined YAW movements of the DJI Matrice-100 unmanned aerial vehicle (UAV). Changes in viewpoint have various consequences for visual and graphical rendering. Therefore, this study investigated how to minimize these changes. OpenGL visualization was performed to simulate and measure viewpoint changes using the proposed VOR-based eyeball movement algorithm and compared with results of VOR based gimbal

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Varango, Concettina, Francesca Musarella, Mara Cella, and Antonella Varango. "Prospettiva e Valore della matrice Cheratinica nella valutazione dell'utilizzo di Nuove Sostanze Psicoattive nella popolazione che afferisce ai SERD." MISSION, no. 53 (May 2020): 39–44. http://dx.doi.org/10.3280/mis53-2020oa9242.

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Questo articolo nasce dall'esigenza di informare un pi&ugrave; ampio pubblico sul pericolo rappresentato da queste sostanze, far conoscere le NPS (Novel Psychoactive substances) agli operatori del settore (personale di laboratorio, personale delle unit&agrave; di emergenza/ urgenza, operatori sanitari, ricercatori, ecc.) al fine di agevolare l'analisi di campioni sconosciuti e divulgare i dati scientifici che cominciano ad emergere da studi clinici e preclinici sui loro effetti tossici e farmacologici.&nbsp;Dal 2009 sono comparsi nel gruppo delle N.P.S., i nuovi oppioidi sintetici,

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Wang, Hanzhang, and Yisha Liu. "A low-cost autonomous navigation system for a quadrotor in complex outdoor environments." International Journal of Advanced Robotic Systems 17, no. 1 (2020): 172988142090515. http://dx.doi.org/10.1177/1729881420905150.

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In this article, we design a low-cost navigation system for a quadrotor working in unknown outdoor environments. To reduce the computing burden of the quadrotor, we build a separated system and transfer the computing resources from onboard side to ground station side. Both sides’ communication is guaranteed by 5G wireless networks. We utilize a stereo camera to acquire point clouds and build Octomap for the quadrotor’s navigation. Then, the trajectory is generated in two stages. In the first stage, a modified RRT*-CONNECT algorithm is adopted to generate a set of collision-free waypoints. In t

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Mawrence, Raphael, Sandra Munniks, and João Valente. "Calibration of Electrochemical Sensors for Nitrogen Dioxide Gas Detection Using Unmanned Aerial Vehicles." Sensors 20, no. 24 (2020): 7332. http://dx.doi.org/10.3390/s20247332.

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For years, urban air quality networks have been set up by private organizations and governments to monitor toxic gases like NO2. However, these networks can be very expensive to maintain, so their distribution is usually widely spaced, leaving gaps in the spatial resolution of the resulting air quality data. Recently, electrochemical sensors and their integration with unmanned aerial vehicles (UAVs) have attempted to fill these gaps through various experiments, none of which have considered the influence of a UAV when calibrating the sensors. Accordingly, this research attempts to improve the

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Carbone, Carlos, Oscar Garibaldi, and Zohre Kurt. "Swarm Robotics as a Solution to Crops Inspection for Precision Agriculture." KnE Engineering 3, no. 1 (2018): 552. http://dx.doi.org/10.18502/keg.v3i1.1459.

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This paper summarizes the concept of swarm robotics and its applicability to crop inspections. To increase the agricultural yield it is essential to monitor the crop health. Hence, precision agriculture is becoming a common practice for farmers providing a system that can inspect the state of the plants (Khosla and others, 2010). One of the rising technologies used for agricultural inspections is the use of unmaned air vehicles (UAVs) which are used to take aerial pictures of the farms so that the images could be processed to extract data about the state of the crops (Das et al., 2015). For th

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Tyszler, Elsa. "Massacrer pour rasseoir l’ordre migratoire." Criminologie 57, no. 2 (2024): 83–108. https://doi.org/10.7202/1114785ar.

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À la frontière de Melilla, le massacre du 24 juin 2022, perpétré par des forces marocaines et espagnoles, a provoqué la mort d’au moins 27 personnes et la disparition de plus de 70 autres, a fait plusieurs centaines de blessés et au moins 100 prisonniers. Pour tenter de comprendre ces évènements qui s’ancrent dans un continuum de violences antimigratoires qui perdure en toute impunité depuis deux décennies, il faut replacer cette frontière dans sa matrice raciale et décrypter les rapports de genre en jeu. Se basant sur un long travail ethnographique mené entre 2015 et 2017, et sur une contre-e

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Lebas, E., C. Bretagnolle, N. Rafrafi, L. Beaumont, and R. Megard. "Cartographie des risques a priori du circuit du médicament dans les structures extrahospitalières d’un centre hospitalier spécialisé en psychiatrie : proposition d’un outil d’analyse." European Psychiatry 30, S2 (2015): S152. http://dx.doi.org/10.1016/j.eurpsy.2015.09.306.

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L’amélioration de la prise en charge médicamenteuse est un objectif constant des équipes en charge de la qualité et de la gestion des risques liés aux soins. En psychiatrie, le circuit du médicament concerne à la fois les secteurs intra et extrahospitaliers, pour lequel l’analyse des risques est parfois moins maîtrisée. L’objectif de ce travail est d’établir une cartographie des risques, a priori, du circuit du médicament du secteur extrahospitalier de notre établissement (800 lits) afin d’aboutir à l’élaboration de recommandations pour la sécurisation de ce circuit. Un état des lieux du fonct

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Oniga, Valeria-Ersilia, Ana-Maria Loghin, Mihaela Macovei, Anca-Alina Lazar, Bogdan Boroianu, and Paul Sestras. "Enhancing LiDAR-UAS Derived Digital Terrain Models with Hierarchic Robust and Volume-Based Filtering Approaches for Precision Topographic Mapping." Remote Sensing 16, no. 1 (2023): 78. http://dx.doi.org/10.3390/rs16010078.

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Airborne Laser Scanning (ALS) point cloud classification in ground and non-ground points can be accurately performed using various algorithms, which rely on a range of information, including signal analysis, intensity, amplitude, echo width, and return number, often focusing on the last return. With its high point density and the vast majority of points (approximately 99%) measured with the first return, filtering LiDAR-UAS data proves to be a more challenging task when compared to ALS point clouds. Various algorithms have been proposed in the scientific literature to differentiate ground poin

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Guevara, Bryan S., Luis F. Recalde, José Varela-Aldás, Victor H. Andaluz, Daniel C. Gandolfo, and Juan M. Toibero. "A Comparative Study between NMPC and Baseline Feedback Controllers for UAV Trajectory Tracking." Drones 7, no. 2 (2023): 144. http://dx.doi.org/10.3390/drones7020144.

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Transport, rescue, search, surveillance, and disaster relief tasks are some applications that can be developed with unmanned aerial vehicles (UAVs), where accurate trajectory tracking is a crucial property to operate in a cluttered environment or under uncertainties. However, this is challenging due to high nonlinear dynamics, system constraints, and uncertainties presented in cluttered environments. Hence, uncertainties in the form of unmodeled dynamics, aerodynamic effects, and external disturbances such as wind can produce unstable feedback control schemes, introducing significant positiona

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Saint-Fleur, Weldy, Adriana Carvalieri Saís, and Luiz Antonio Cabello Norder. "Analyse spatio-temporelle par télédétection de l’évolution du paysage dans la région de Haut-Limbé (Haïti) de 2016 à 2021." Norois 268-269, no. 3 (2024): 91–108. https://doi.org/10.3917/nor.268.0091.

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Cette étude analyse et quantifie la dynamique d'occupation des sols dans la commune rurale de Haut-Limbé (Nord d'Haïti) entre 2016 et 2021, à partir du traitement de deux images satellitaires Sentinel-2 acquises en saison sèche. Une classification supervisée par maximum de vraisemblance a permis de distinguer 7 classes d'occupation du sol : eau, végétation dense, zones agricoles, zones de pâturage / culture, sable, surfaces bâties et sols dégradés. La validation par matrice de confusion indique une excellente fiabilité de la cartographie (indice Kappa à 0,89). Les résultats mettent en évidence

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Poudel, A., and E. Bevilacqua. "ASSESSING RED PINE SEEDLINGS USING UAV POINT CLOUDS AND FIELD-VERIFIED DATA." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVI-M-2-2022 (July 25, 2022): 173–76. http://dx.doi.org/10.5194/isprs-archives-xlvi-m-2-2022-173-2022.

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Abstract. Accurate, reliable, and cost-efficient approaches to forest monitoring are critical for sustainable forest management. The use of digital photogrammetry for tree height estimation is well-known among forest managers and remote sensing researchers. Satellite remote sensing has not been very successful in providing detailed and reliable estimates of tree height. Unmanned Aerial Vehicles (UAVs) are one of the latest remote sensing platforms to get forest attributes information at very high temporal and spatial resolution. This study assessed the potential of using digital aerial photogr

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Cholula, Uriel, Jorge A. da Silva, Thiago Marconi, J. Alex Thomasson, Jorge Solorzano, and Juan Enciso. "Forecasting Yield and Lignocellulosic Composition of Energy Cane Using Unmanned Aerial Systems." Agronomy 10, no. 5 (2020): 718. http://dx.doi.org/10.3390/agronomy10050718.

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Crop monitoring and appropriate agricultural management practices of elite germplasm will enhance bioenergy’s efficiency. Unmanned aerial systems (UAS) may be a useful tool for this purpose. The objective of this study was to assess the use of UAS with true color and multispectral imagery to predict the yield and total cellulosic content (TCC) of newly created energy cane germplasm. A trial was established in the growing season of 2016 at the Texas A&M AgriLife Research Center in Weslaco, Texas, where 15 energy cane elite lines and three checks were grown on experimental plots, arranged in

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Marques Polido Fabri, Thalles, Gustavo Marroquio de Mello, Jéferson Luiz Ferrari, João Batista Esteves Peluzio, and Mauricio Novaes Souza. "COMPORTAMENTO DE ÍNDICES DE VEGETAÇÃO EM CAFEEIROS UTILIZANDO SENSOR MULTIESPECTRAL EM AERONAVE REMOTAMENTE PILOTADA." Revista Ifes Ciência 9, no. 1 (2023): 01–15. http://dx.doi.org/10.36524/ric.v9i1.1850.

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Objetivou-se analisar o comportamento dos índices de vegetação em cafeeiros por meio de sensor multiespectral acoplado em veículo aéreo não tripulado. O trabalho foi realizado nas lavouras de café do Setor de Cafeicultura do Instituto Federal do Espírito Santo, campus de Alegre, Sul do Espírito Santo. Os índices de vegetação foram gerados por meio do uso de um programa computacional de Sistema de Informação Geográfica, o QGIS 3.4.5, tendo como base um ortomosaico de imagens capturadas por uma Câmera Multiespectral MicaSense RedEdge, acoplada em um drone DJI Matrice 100. De posse do ortomosaico

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Massimiliano Erba and Susanna Cantoni. "Amianto nei pesci d’acqua dolce di un laghetto milanese. Da dove viene?" La Medicina del Lavoro 110, no. 3 (2019): 202–14. https://doi.org/10.23749/mdl.v110i3.7455.

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Introduzione: In seguito al ritrovamento di materiale di matrice cementizia contenente amianto affiorato dalle acque di una cava milanese, sono stati effettuati accertamenti per verificarne il livello di contaminazione. Nel laghetto è praticata la pesca sportiva. Alcuni pesci sono destinati alla pesca “no kill”, altri invece sono catturati e consumati. Obiettivi: Verificare la presenza di amianto nell’acqua, nei sedimenti ed in alcune specie di ittiofauna presenti nella cava. Verificare la presenza di amianto nei mangimi somministrati ai pesci, per accertare l’esposizione dell’ittiofauna attra

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Puelles Condori, Blanca Nélida, Jim Cárdenas Rodríguez, and Andrés Corsino Estrada Zuñiga. "Estimación de biomasa y carga animal en humedales ribereños utilizando ortofotografías multiespectrales adquiridas con microsensores transportados en vehículos aéreos no tripulados “Drone”." Revista de Investigaciones Altoandinas - Journal of High Andean Research 24, no. 4 (2022): 248–56. http://dx.doi.org/10.18271/ria.2022.442.

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El estudio se realizó en los humedales ribereños de San Pedro y San Pablo adyacentes al río Vilcanota en la provincia de Canchis, Cusco, en el sur del Perú. El objetivo fue estimar la producción de biomasa aérea y la capacidad de carga animal de estos humedales a partir del análisis de muestras adquiridas en campo y ortofotografías de índice de Vegetación de Diferencia Normalizada (NDVI). Las imágenes se adquirieron con una cámara multiespectral Parrot Sequoia, transportado por un Drone Matrice 100 DJI y procesadas en el software Pix4D y ArcGIS 10.6. EL estudio identificó 5 clases de uso de su

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St-Onge, Denis A., and Isabelle McMartin. "La Moraine du Lac Bluenose (Territoires du Nord-Ouest), une moraine à noyau de glace de glacier." Géographie physique et Quaternaire 53, no. 2 (2002): 287–95. http://dx.doi.org/10.7202/005696ar.

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Résumé Au sud du détroit du Dolphin et de l'Union, dans les Territoires du Nord-Ouest, des crêtes morainiques hautes de 100 m, composées de till à gros blocs marquent l'emplacement d'un front glaciaire à l'est et au nord du lac Bluenose. Les principales crêtes sont soit massives, soit composites avec de petites crêtes secondaires à leur sommet. En amont glaciaire (est) des crêtes, les formes de relief les plus fréquentes sont des collines recouvertes de blocs dont la hauteur atteint 60 m et des monticules entre lesquels se trouvent de nombreux lacs. Un important glissement de terrain au cœur d

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Doughty, Cheryl, and Kyle Cavanaugh. "Mapping Coastal Wetland Biomass from High Resolution Unmanned Aerial Vehicle (UAV) Imagery." Remote Sensing 11, no. 5 (2019): 540. http://dx.doi.org/10.3390/rs11050540.

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Salt marsh productivity is an important control of resiliency to sea level rise. However, our understanding of how marsh biomass and productivity vary across fine spatial and temporal scales is limited. Remote sensing provides a means for characterizing spatial and temporal variability in marsh aboveground biomass, but most satellite and airborne sensors have limited spatial and/or temporal resolution. Imagery from unmanned aerial vehicles (UAVs) can be used to address this data gap. We combined seasonal field surveys and multispectral UAV imagery collected using a DJI Matrice 100 and Micasens

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Blasi, I. "Miglioramento e appropriatezza dell’assistenza diabetologica: progetto di approccio multi-professionale per le persone con diabete di tipo 2 ad elevata complessità." Journal of AMD 26, S3 (2023): S70. http://dx.doi.org/10.36171/jamd23.26.s3.11.

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Recenti trial clinici su farmaci innovativi (GLP 1 RA e SGLt2 -i) hanno dimostrato un’efficacia significativa nella riduzione della mortalità e degli esiti cardiovascolari e renali nei pazienti affetti da diabete tipo 2. In considerazione di questi fattori e in accordo con quanto dichiarato all’interno della Missione 6 del Piano Nazionale di Ripresa e Resilienza (PNRR), è stata proposta l’implementazione di un percorso multidisciplinare condiviso per la gestione della cura dei pazienti diabetici ad alta complessità. Ciò include i pazienti con prevenzione cardiovascolare e renale secondaria con

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Pasichnyk, N. A., V. P. Lysenko, and O. O. Opryshko. "Methodical approaches to plant identification in high-resolution images in multispectral monitoring using UAVS." PLANT AND SOIL SCIENCE 12, no. 2 (2021): 47–53. http://dx.doi.org/10.31548/agr2021.02.047.

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Crop management used in these technologies is one of the main trends in the modernization of agricultural technologies. To implement crop management, growers need accessible and effective information about the state of crops. The aim of the work is to develop a method of plant identification on multispectral images of high resolution for crops of continuous sowing on the example of winter wheat. The research was conducted on 03/17/2019 on winter wheat crops in the tillering vegetation phase, Mukan variety in production fields near the village of Horodyshche, Kyiv region. Aerial monitoring from

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Parsons, Ira L., Stephen Webb, Brandi B. Karisch, Amanda E. Stone, and Garrett Street. "178 Tag Your It: Use of Wearable Biometric and Remote Sensing Technology to Monitor Animal Growth, Performance, and Efficiency in Extensively Managed Landscapes." Journal of Animal Science 101, Supplement_3 (2023): 80–81. http://dx.doi.org/10.1093/jas/skad281.097.

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Abstract Energy budgets in grazing cattle are notoriously difficult to study given complex environmental and physiological interactions between plants and animals, each operating according to individual grazing budgets. However, these synergistic energy pathways can be modeled using a series of mechanistic relationships describing forage resource distribution and animal behavior, each which can be observed with high levels of accuracy and precision using biometric sensors and remote sensing technology. The objective of this study is to demonstrate the coordination of data inputs into a coheren

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Yeom, Junho, Jinha Jung, Anjin Chang, et al. "Comparison of Vegetation Indices Derived from UAV Data for Differentiation of Tillage Effects in Agriculture." Remote Sensing 11, no. 13 (2019): 1548. http://dx.doi.org/10.3390/rs11131548.

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Unmanned aerial vehicle (UAV) platforms with sensors covering the red-edge and near-infrared (NIR) bands to measure vegetation indices (VIs) have been recently introduced in agriculture research. Consequently, VIs originally developed for traditional airborne and spaceborne sensors have become applicable to UAV systems. In this study, we investigated the difference in tillage treatments for cotton and sorghum using various RGB and NIR VIs. Minimized tillage has been known to increase farm sustainability and potentially optimize productivity over time; however, repeated tillage is the most comm

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TOURNEUR, Jérôme, Vincent PRIÉ, and Gilles MOURGAUD. "Bivalves des étangs des Espaces naturels sensibles du Maine-et-Loire : diversité et étude pilote sur la détection par analyse de l'ADNe." Naturae 2024, no. 13 (2024): 261–71. https://doi.org/10.5852/naturae2024a13.

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Le CPIE Loire Anjou a conduit en 2020 et 2021 une étude visant à estimer la diversité des bivalves de 16 étangs du Maine-et-Loire classés pour la plupart en Espaces naturels sensibles et à estimer le degré de présence de l’Anodonte chinoise <em>Sinanodonta woodiana</em> (I. Lea, 1934), espèce envahissante récemment détectée dans le département. Les prospections ont été menées de manière traditionnelle (prospection pédestre, aquascope, tamisage de sédim

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Kouonon, Léonie Clémence, Kouamé Guillaume Koffi, Koffi Adjoumani, Anouman Désirée Sandrine Mobio, and Koudougnon Alice Estère Goba. "Caractérisation phénotypique du néré (Parkia biglobosa (Jacq.) R. Br. ex G. Don, Fabaceae) dans trois types de savane de Côte d’Ivoire." International Journal of Biological and Chemical Sciences 14, no. 2 (2020): 555–69. http://dx.doi.org/10.4314/ijbcs.v14i2.20.

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Afin de préserver les nombreux biens et services fournis par Parkia biglobosa (Jacq.) R. Br. ex G. Don, Fabaceae, il est fondamental de connaître la variabilité phénotypique de l’espèce pour sa domestication. L’objectif de cette étude est de déterminer des caractères morphologiques permettant d’identifier des arbres-plus dans les savanes de Côte d’Ivoire. La variabilité phénotypique d’arbres distants d’au moins 100 m des trois types de savane a été étudiée à travers 22 caractères quantitatifs relatifs aux troncs, feuilles, fruits et graines. La matrice de données obtenue a été analysée avec di

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BALLICO, Edoardo. "The numerical range of matrices over F4." TURKISH JOURNAL OF MATHEMATICS 43, no. 2 (2019): 955–64. http://dx.doi.org/10.3906/mat-1810-100.

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Melnikov, Mikhail Ya, Oleg I. Gromov, Vladimir I. Pergushov, Daria A. Pomogailo, and Ivan D. Sorokin. "PHOTOCHEMISTRY OF METHYL FORMATE RADICAL CATIONS IN FROZEN CFCL3 MATRICES." Lomonosov chemistry journal 66, no. 2, 2025 (2025): 100–106. https://doi.org/10.55959/msu0579-9384-2-2025-66-2-100-106.

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A novel mechanism has been discovered for the phototransformations of methyl formate radical cations (RCs) wherein an RC that is furnished upon thermally induced 1,2-transfer of an hydrogen atom in the methyl group to the bridging oxygen atom undergoes photoinduced H+ transfer to the matrix.

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Stępniak, Czesław. "Inverting covariance matrices." Discussiones Mathematicae Probability and Statistics 26, no. 2 (2006): 163. http://dx.doi.org/10.7151/dmps.1080.

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Vasilyev, Stanislav A., Natalia V. Grigoreva, Nikita O. Medvedev, Marianna S. Pavlova, and Natalia P. Senchina. "Plakun Burial Ground: a new discovery of the well-known site based on the results of the aerial lidar and ground penetrating radar research." Ufa Archaeological Herald 24, no. 3 (2024): 573–86. http://dx.doi.org/10.31833/uav/2024.24.3.038.

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The article presents findings of complex interdisciplinary researches of a group of sopkas in the Plakun terrain feature. The monument is part of the Staroladozhky archaeological complex located in Volk- hovsky district, Leningrad region, 120 km east of St. Petersburg. The sopkas are one of the main landmarks of the region. They are high steep embankments 11 – 30 m in diameter and 3 – 8 m high. They date back to the 8th – 10th centuries. The ethnicity of their makers is uncertain. Historiographical data suggest that the monu- ment consisted of 6 sopkas divided into clusters 3 embankments each.

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Ricci, Paolo Emilio. "A note on Q-matrices and higher order Fibonacci polynomials." Notes on Number Theory and Discrete Mathematics 27, no. 1 (2021): 91–100. http://dx.doi.org/10.7546/nntdm.2021.27.1.91-100.

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The results described in a recent article, relative to a representation formula for the generalized Fibonacci sequences in terms of Q-matrices are extended to the case of Fibonacci, Tribonacci and R-bonacci polynomials.

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Ni, Wanjun, Lizhong Wang, Hongjian Song, Yuxiu Liu, and Qingmin Wang. "Synthesis and Evaluation of 11-Butyl Matrine Derivatives as Potential Anti-Virus Agents." Molecules 27, no. 21 (2022): 7563. http://dx.doi.org/10.3390/molecules27217563.

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Matrine derivatives were reported to have various biological activities, especially the ester, amide or sulfonamide derivatives of matrine deriving from the hydroxyl or carboxyl group at the end of the branch chain after the D ring of matrine is opened. In this work, to investigate whether moving away all functional groups from the C-11 branch chain could have an impact on the bioactivities, such as anti-tobacco mosaic virus (TMV), insecticidal and fungicidal activities, a variety of N-substituted-11-butyl matrine derivatives were synthesized. The obtained bioassay result showed that most N-su

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Han, Shao-Rong, Hai Gong, Yan-Ming Wang, et al. "The Preparation of Matrine Liposome and Its Antiglioma Activity Study." Journal of Chemistry 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/317320.

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The aim of the study was to study the preparation of matrine liposome and its activity for resisting cells, to study the preparation of matrine liposome by orthogonal design, and to observe the inhibiting effect of matrine on glioma through MTT method, Flow Cytometer, and electron microscope. The results showed that we take the encapsulation efficiency as the index; the optimal preparation of matrine liposome is 100 mg of lecithin, 40 mg of cholesterol, phosphate buffered saline (PBS) with pH value 6.4, and 40 mg of matrine. The result of MTT testing is shown that the tested group with medium

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36

Shokati, Hadi, Mahmoud Mashal, Aliakbar Noroozi, et al. "Comparing UAV-Based Hyperspectral and Satellite-Based Multispectral Data for Soil Moisture Estimation Using Machine Learning." Water 17, no. 11 (2025): 1715. https://doi.org/10.3390/w17111715.

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Accurate estimation of soil moisture content (SMC) is crucial for effective water management, enabling improved monitoring of water stress and a deeper understanding of hydrological processes. While satellite remote sensing provides broad coverage, its spatial resolution often limits its ability to capture small-scale variations in SMC, especially in landscapes with diverse land-cover types. Unmanned aerial vehicles (UAVs) equipped with hyperspectral sensors offer a promising solution to overcome this limitation. This study compares the effectiveness of Sentinel-2, Landsat-8/9 multispectral da

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Rassam, Daud W., and David J. Williams. "A relationship describing the shear strength of unsaturated soils." Canadian Geotechnical Journal 36, no. 2 (1999): 363–68. http://dx.doi.org/10.1139/t98-102.

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A relationship describing the shear-strength profile of a desiccating soil deposit is essential for the purpose of analysis, especially when a numerical method is adopted where each zone in a discretised grid is assigned an elevation-dependent shear-strength value. The matric-suction profile of a desiccating soil deposit is nonlinear. Up to the air-entry value, an increase in matric suction is associated with a linear increase in shear strength. Beyond air entry, as the soil starts to desaturate, a nonlinear increase in shear strength occurs. The soil-water characteristic curve is stress depen

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Gómez Plata, Adrián Ricardo. "Uso de la descomposición TOEPLITZ en la estratificación de matrices." Ciencia e Ingeniería Neogranadina 17, no. 1 (2007): 5–12. http://dx.doi.org/10.18359/rcin.1080.

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Las matrices Normales N son una subvariedad estratificada en forma de estrella de R^[(2n)^2]; se prefiere para propósitos prácticos, tener en forma concreta como es la estratificación de algunas matrices. Se presentará aquí algunos teoremas que permiten decantar una estratificación de las matrices Normales hecha por medio de la descomposición de Toeplitz y que conlleva a realizar el cálculo de valores propios usando el método Hermitiano de Lanczos o el método de Arnoldo según Huthanen [4].

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39

Nainggolan, Sahat Pandapotan. "SYMMETRICAL MATRICES CHARACTERISTIC OF INTEGERS WITH INTEGER EIGEN VALUE." Jurnal Riset dan Aplikasi Matematika (JRAM) 7, no. 1 (2023): 95–103. http://dx.doi.org/10.26740/jram.v7n1.p95-103.

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Estes (1992) stated that the set of eigen values from symmetrical matrices of Z is a set of totally real algebraic integers. Estes was not able to ensure that eigen values of a symmetrical matrices are integers. Mckee and Smyth (2007) observed more about the eigen value of symmetrical integer matrices. James and Chris proved that symmetrical integer matrices have eigen value with interval ranging in [-2,2]. Contrary to that, Martin and Wong (2009), stated that almost all integer matrices have no integer eigen value. Previous studies that could not show the characteristic of the eigen value mad

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Meilani, Inge, Harianto Rahardjo, Eng-Choon Leong, and Delwyn G. Fredlund. "Mini suction probe for matric suction measurements." Canadian Geotechnical Journal 39, no. 6 (2002): 1427–32. http://dx.doi.org/10.1139/t02-101.

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A modified triaxial apparatus with mini suction probes was fabricated to study the matric suction along the specimen height during unsaturated triaxial testing. Three mini suction probes were placed at 3/4, 1/2, and 1/4 height of the specimen, each at 120° apart in the lateral direction. This paper presents the development of the mini probe for matric suction measurements. Evaluation of the performance shows that the fabricated mini probe provides a rapid response and accurate reading under negative and positive pore-water pressure changes. Matric suctions as high as 400 kPa were successfully

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Petala, Athanasia, Athanasia Nasiou, Dionissios Mantzavinos, and Zacharias Frontistis. "Photocatalytic Evaluation of Ag2CO3 for Ethylparaben Degradation in Different Water Matrices." Water 12, no. 4 (2020): 1180. http://dx.doi.org/10.3390/w12041180.

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The present study examines the photocatalytic properties of silver carbonate (Ag2CO3) for ethyl paraben (EP) degradation under simulated solar irradiation. Ag2CO3 was prepared according to a solution method and its physicochemical characteristics were studied by means of X-ray diffraction (XRD), the Brunauer–Emmett–Teller (BET) method, diffuse reflectance spectroscopy (DRS), and transmission electron microscopy (TEM). Complete EP (0.5 mg/L) removal was achieved after 120 min of irradiation with the use of 750 mg/L Ag2CO3 in ultrapure water (UPW), with EP degradation following pseudo-first-orde

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Sidorov, Alexey A., Mikhail A. Kiskin, Alexander E. Baranchikov, Vladimir K. Ivanov, and Igor L. Eremenko. "Methods for Synthesis of Molecular Materials with Unique Physical Properties." Vestnik RFFI, no. 2 (June 25, 2019): 82–100. http://dx.doi.org/10.22204/2410-4639-2019-102-02-82-100.

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The authors discovered and investigated new types of stable heterometallic carboxylate complexes in which divalent transition metal atoms of the 4th period of the Periodic Table of Chemical Elements (V, Co, Ni, Cu, Zn) combine with atoms of lithium, magnesium, calcium or rare earth elements. These polynuclear heterometallic compounds retain their structure under conditions when the homometallic compounds of these transition metals decompose to mononuclear complexes. The different metals combination in one molecule allows us to use the obtained heterometallic compounds for producing disperse an

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43

Fopi, Remcel Dumont Tazo, Martin Ngankam Tchamba, and Gordon Nwutih Ajonina. "Caractérisation physico-chimique et dendrométrie dans les traitements de régénération de mangrove de l’Estuaire du Cameroun." International Journal of Biological and Chemical Sciences 15, no. 6 (2022): 2701–14. http://dx.doi.org/10.4314/ijbcs.v15i6.34.

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Malgré l’échec des initiatives de régénération à restaurer les écosystèmes de mangroves diversifiés et fonctionnels, les études sur le rôle joué par le milieu physicochimique sont rares. Cette étude a été menée pour déterminer les paramètres dendrométriques, les propriétés physicochimiques de l’eau et du sol et comment elles influencent le processus de régénération des mangroves. Pour cela, deux transects de 40 m de long et 10 m de large ont été établis par site, subdivisés ensuite en placettes de 100 m2 dans lesquelles les plantules ont été mesurées, des échantillons d’eau et de sol prélevés

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44

Eliahou, Shalom, and Michel Kervaire. "Modular sequences and modular Hadamard matrices." Journal of Combinatorial Designs 9, no. 3 (2001): 187–214. http://dx.doi.org/10.1002/jcd.1007.

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Kerpedjiev, Peter, Jes Frellsen, Stinus Lindgreen, and Anders Krogh. "Adaptable probabilistic mapping of short reads using position specific scoring matrices." BMC Bioinformatics 15, no. 1 (2014): 100. http://dx.doi.org/10.1186/1471-2105-15-100.

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46

Efimov, Mikhail A., and Alexander E. Guterman. "Monotone maps on diagonalizable matrices." Mathematical Inequalities & Applications, no. 4 (2014): 1441–52. http://dx.doi.org/10.7153/mia-17-106.

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47

Jackson, Donald A., and Keith M. Somers. "Are probability estimates from the permutation model of Mantel's test stable?" Canadian Journal of Zoology 67, no. 3 (1989): 766–69. http://dx.doi.org/10.1139/z89-108.

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Matrix comparison tests (i.e., Mantel's test or quadratic assignment) are employed with increasing frequency to measure the concordance between genetic, behavioural, morphological, ecological, and geographic distances. Such tests compare an observed measure of matrix association with a null distribution derived from a randomly generated subset of all possible permutations of one of the original matrices. Typically, 500–2000 randomly permutated matrices are used to generate the statistical distribution and thereby estimate the probability of obtaining an observed association between two matrice

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48

Radhakrishnan, M., N. Elumalai, R. Perumal, and R. Arulprakasam. "Idempotent circulant matrices." Journal of Physics: Conference Series 1000 (April 2018): 012154. http://dx.doi.org/10.1088/1742-6596/1000/1/012154.

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Zhao, Wen Ling. "The Non-Singularity on the Level-2(r₁,r₂)-Circulant Matrices of Type (n₁,n₂)." Advanced Materials Research 108-111 (May 2010): 657–62. http://dx.doi.org/10.4028/www.scientific.net/amr.108-111.657.

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As special matrices, it is well known that the circulant matrices are very important. Various types of circulant matrices have been applied in such as signal dealing and oil exploration, and so on in recent years. In this paper, motivated by [1], we give some discriminations by using only the elements in the first row of the Level- -Circulant Matrices of Type and parameter on non singularity, and give two examples at last.

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Han, Gui Chun. "New Criteria for Nonsingular H-Matrices." Advanced Materials Research 1006-1007 (August 2014): 1043–46. http://dx.doi.org/10.4028/www.scientific.net/amr.1006-1007.1043.

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The concept of quasi-double diagonally dominant matrices is introduced, and it’s equivalent representation is given. As its application, one sufficient condition for nonsingular H-matrices is obtained. The effectiveness of the proposed criterion for nonsingular H-matrices is showed by numerical example.

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