Bibliographies thématiques / Aerial spread

Littérature scientifique sur le sujet « Aerial spread »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Aerial spread"

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Mundt, Christopher C., Kathryn E. Sackett, LaRae D. Wallace, Christina Cowger et Joseph P. Dudley. « Aerial Dispersal and Multiple-Scale Spread of Epidemic Disease ». EcoHealth 6, no 4 (décembre 2009) : 546–52. http://dx.doi.org/10.1007/s10393-009-0251-z.

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Shelstad, Dixon, Lloyd Queen, David French et Daniel Fitzpatrick. « Describing the Spread of Oak Wilt Using a Geographic Information System ». Arboriculture & ; Urban Forestry 17, no 7 (1 juillet 1991) : 192–99. http://dx.doi.org/10.48044/jauf.1991.047.

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The oak wilt fungus (C. fagacearum) spreads both through root grafts to adjacent trees and via insects over longer distances. Effective control of the disease requires a better understanding of the spatial and temporal components of both types of spread. Towards that end, color infrared aerial photography covering a ten-year interval of time was interpreted and then analyzed using a GIS for purposes of describing spread rates and areas affected. The GIS allowed rapid and thorough assessment of both overland and local disease spread. New infection centers were found to occur at greater distances than previously reported, and these new centers accounted in total for the most significant component of increase in total area affected by the fungus.
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Honda, Yoko, Norihisa Yokouchi et Tomohide Okada. « Research on the Aerial Spread of Waterfront Development in Surrounding Areas ». Journal of the City Planning Institute of Japan 37 (2002) : 1087. http://dx.doi.org/10.11361/cpij1.37.0.1087.0.

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Honda, Yoko, Norihisa Yokouchi et Tomohide Okada. « Research on the Aerial Spread of Waterfront Development in Surrounding Areas ». Journal of the City Planning Institute of Japan 37 (2002) : 1087–92. http://dx.doi.org/10.11361/journalcpij.37.1087.

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Lee, Jihwan, Chulyoung Kwak, Seongwon Kim et Saewoong Bahk. « Reliable and Low-Complexity Chirp Spread Spectrum-Based Aerial Acoustic Communication ». IEEE Access 8 (2020) : 151589–601. http://dx.doi.org/10.1109/access.2020.3017097.

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Baker, F. A., K. Knowles, T. R. Meyer et D. W. French. « Aerial Applications of Ethylene-Releasing Chemicals Fail to Promote Abscission of Dwarf Mistletoe Aerial Shoots on Jack Pine ». Forestry Chronicle 65, no 3 (1 juin 1989) : 194–95. http://dx.doi.org/10.5558/tfc65194-3.

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The ethylene-releasing chemical Cerone was applied in early August to two strands of jack pine infested with the lodgepole pine dwarf mistletoe in northwestern Manitoba. Nine weeks after aerial application, Cerone failed to cause appreciable abscission of dwarf mistletoe aerial shoots, while almost 90% of the aerial shoots on branches treated from the ground had abscised. Ground application of Cerone could reduce spread of dwarf mistletoe by limiting seed production. Key Words: Arceuthobium, jack pine, chemical control
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Chok, S. E., M. C. E. Grafton, I. J. Yule et M. J. Manning. « Capability of ground fertiliser placement when spread from fixed wing aircraft ». NZGA : Research and Practice Series 16 (1 janvier 2016) : 191–95. http://dx.doi.org/10.33584/rps.16.2016.3230.

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Aerial topdressing using differential rate application technology improves fertiliser spreading on hill country farms. However, the system's ability to place fertiliser accurately and precisely within an area needs to be determined. Accuracy was determined by comparing measured and intended application rates. Precision was indicated by the coefficient of variation (CV), which is the standard deviation of the measured application rate over the mean of this rate. Two trials were carried out, where aircraft deposited fertiliser at two application rates and fertiliser was captured using cone-shaped collectors. The average measured application rate for both trials was less than the intended rate. The CV ranged from 35 to 57%, and was lower than CV's from pilot-operated hopper systems (78%). A one-way analysis of variance test found the difference between measured application rate in the high and low application zone was statistically significant. The results indicate work is required to improve the accuracy and precision of the differential rate system, however, the system shows promise. Keywords: differential rate application technology, aerial spreading, fertiliser placement
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Correia, Carlos A. M., Fabio A. A. Andrade, Agnar Sivertsen, Ihannah Pinto Guedes, Milena Faria Pinto, Aline Gesualdi Manhães et Diego Barreto Haddad. « Comprehensive Direct Georeferencing of Aerial Images for Unmanned Aerial Systems Applications ». Sensors 22, no 2 (13 janvier 2022) : 604. http://dx.doi.org/10.3390/s22020604.

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Optical image sensors are the most common remote sensing data acquisition devices present in Unmanned Aerial Systems (UAS). In this context, assigning a location in a geographic frame of reference to the acquired image is a necessary task in the majority of the applications. This process is denominated direct georeferencing when ground control points are not used. Despite it applies simple mathematical fundamentals, the complete direct georeferencing process involves much information, such as camera sensor characteristics, mounting measurements, attitude and position of the UAS, among others. In addition, there are many rotations and translations between the different reference frames, among many other details, which makes the whole process a considerable complex operation. Another problem is that manufacturers and software tools may use different reference frames posing additional difficulty when implementing the direct georeferencing. As this information is spread among many sources, researchers may face difficulties on having a complete vision of the method. In fact, there is absolutely no paper in the literature that explain this process in a comprehensive way. In order to supply this implicit demand, this paper presents a comprehensive method for direct georeferencing of aerial images acquired by cameras mounted on UAS, where all required information, mathematical operations and implementation steps are explained in detail. Finally, in order to show the practical use of the method and to prove its accuracy, both simulated and real flights were performed, where objects of the acquired images were georeferenced.
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Pastalka, Tomas, Suzanne Rooney-Latham, Kathleen Kosta, Karen Suslow, Vernon Huffman, Sibdas Ghosh et Wolfgang Schweigkofler. « Monitoring Using a Sentinel Plant System Reveals Very Limited Aerial Spread of Phytophthora ramorum From Infected Ornamental Plants in a Quarantine Research Nursery ». Plant Health Progress 18, no 1 (1 janvier 2017) : 9–16. http://dx.doi.org/10.1094/php-rs-16-0050.

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The potential aerial spread of Phytophthora ramorum, causal agent of sudden oak death and Ramorum blight, from infected plants in a quarantine research nursery at the National Ornamentals Research Site at Dominican University of California (NORS-DUC) to the environment was monitored weekly for five years (2011 to 2016) using a sentinel system. Phytophthora ramorum was never detected on any of the sentinel plants (Rhododendron, Viburnum, and Loropetalum spp), indicating very limited aerial spread under suboptimal meteorological and environmental conditions. An infection experiment with host plants placed in the immediate vicinity of symptomatic plants proved the potential for short-distance (1 to 2 m) aerial transmission of P. ramorum. Other Phytophthora spp. causing symptoms similar to P. ramorum were detected during the rainy season (January to May) on the sentinel plants, among them potentially two novel species. These data reveal how sentinel monitoring at NORS-DUC allows for seasonal assessments of disease incidence and provide longitudinal data to assess the threat of P. ramorum movement in nurseries.
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Hart, Henry, Daniel D. B. Perrakis, Stephen W. Taylor, Christopher Bone et Claudio Bozzini. « Georeferencing Oblique Aerial Wildfire Photographs : An Untapped Source of Fire Behaviour Data ». Fire 4, no 4 (22 octobre 2021) : 81. http://dx.doi.org/10.3390/fire4040081.

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In this study, we investigate a novel application of the photogrammetric monoplotting technique for assessing wildfires. We demonstrate the use of the software program WSL Monoplotting Tool (MPT) to georeference operational oblique aerial wildfire photographs taken during airtanker response in the early stages of fire growth. We located the position of the fire front in georeferenced pairs of photos from five fires taken 31–118 min apart, and calculated the head fire spread distance and head fire rate of spread (HROS). Our example photos were taken 0.7 to 4.7 km from fire fronts, with camera angles of incidence from −19° to −50° to image centre. Using high quality images with detailed landscape features, it is possible to identify fire front positions with high precision; in our example data, the mean 3D error was 0.533 m and the maximum 3D error for individual fire runs was less than 3 m. This resulted in a maximum HROS error due to monoplotting of only ~0.5%. We then compared HROS estimates with predictions from the Canadian Fire Behavior Prediction System, with differences mainly attributed to model error or uncertainty in weather and fuel inputs. This method can be used to obtain observations to validate fire spread models or create new empirical relationships where databases of such wildfire photos exist. Our initial work suggests that monophotogrammetry can provide reproducible estimates of fire front position, spread distance and rate of spread with high accuracy, and could potentially be used to characterize other fire features such as flame and smoke plume dimensions and spotting.
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Thèses sur le sujet "Aerial spread"

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Bess, Philip K. « Spread spectrum applications in unmanned aerial vehicles ». Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA281035.

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Hansen, Steven R. « Applications of Search Theory to Coordinated Searching by Unmanned Aerial Vehicles ». Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1809.pdf.

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Heath, Douglas Bradley. « A standard method for testing rotary airborne spray devices / ». Title page, summary and contents only, 1985. http://web4.library.adelaide.edu.au/theses/09A/09ah437.pdf.

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Breidenbaugh, Mark. « Testing Effects of Aerial Spray Technologies on Biting Flies and Nontarget Insects at the Parris Island Marine Corps Recruit Depot, South Carolina, USA ». Kent State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=kent1228223589.

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Berna, Raquel [UNESP]. « Espectro de gotas geradas por ponta de jato plano de impacto para aplicação aérea na presença de adjuvantes em caldas de pulverização ». Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/150846.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Por necessidade de maior capacidade de campo operacional durante as aplicações de produtos fitossanitários nas lavouras, a aviação agrícola têm se destacado como uma opção importante para diversas culturas. Porém, para garantir a eficácia da aplicação, alguns fatores devem ser considerados, como a calda, o elemento gerador de gotas e o fluxo de ar, pois estes irão influenciar no espectro de gotas formado e, consequentemente, no risco de ocorrer deriva. O objetivo desta pesquisa foi avaliar a influência de diferentes adjuvantes nas características físicas das caldas contendo fungicida, analisando-se o espectro de gotas formado em função de cada ângulo de deflexão de uma ponta de pulverização aérea CP-03, buscando um indicativo de utilização dessas técnicas quanto à qualidade e segurança das aplicações. Foram avaliadas quatro caldas, sendo uma calda com fungicida, e outras três com as misturas do fungicida com cada um dos adjuvantes: um multifuncional; um óleo vegetal; e um óleo mineral. A aplicação aérea foi simulada através de um ventilador de alta capacidade, com velocidade média de vento de 180 km h-1. Na saída deste ventilador foi acoplada a ponta de pulverização CP-03, e a pulverização foi simulada com taxa de aplicação de 20 L ha-1 e pressão de 200 kPa. Todas as caldas foram pulverizadas com os três ângulos defletores da ponta (30°, 55° e 90°) e o espectro de gotas foi determinado utilizando-se um equipamento analisador de partículas em tempo real posicionado na frente do simulador (VisiSizer portátil - Oxford Lasers Ltd / UK). Entre as caldas que continham o fungicida mais um dos adjuvantes, a calda composta pelo fungicida e o adjuvante multifuncional apresentou os maiores valores de diâmetro mediano volumétrico (DMV) e menores valores percentuais de gotas menores que 100 µm (V100), com todos os ângulos defletores da ponta de pulverização CP-03, posicionando-se como melhor técnica de redução de deriva. A adição de óleo mineral a calda proporcionou o menor valor de DMV e maior valor de V100, quando comparado às outras caldas. Com relação ao potencial de redução do risco de deriva o ângulo defletor de 30°, ofereceu o melhor potencial com todas as caldas avaliadas.
Due to the necessary of a greater operational efficiency during applications of plant health products in crops, agricultural aviation has been an important option for several crops. However, to ensure the effectiveness of the application, some factors must be considered as the spray formulation, the nozzles and the air flow, as these will influence the droplet spectrum formed and, consequently, the risk of spray drift. Based on this subject, the objective of this research was to evaluate the influence of different adjuvants on the physical characteristics of the spray mixture with the behavior of the droplet spectrum formed as a function of each deflection angle of the aerial spray tip CP-03 and to find an indicative of which of them are more suitable for reducing the risk of spray drift. Four spray formulations were evaluated, one spray solution with fungicide, and the other three sprays with a mix of each of the adjuvants containing fungicide, the first one surfactant, the second one mineral oil and the third one a vegetable oil. The aerial application was simulated through a high capacity fan with a high‐speed airstreams of 180 km h-1 . At the outlet of this fan the spray tip CP-03 was coupled, and the spraying was simulated with application rate of 20 L ha -1 and pressure of 200 kPa. All spray formulations were tested by three deflecting angles (30 °, 55 ° and 90 °) and the droplet spectrum was determined using a real-time particle analyzer positioned in front of the simulator (VisiSizer portable - Oxford Lasers Ltd / UK). Between the mixture that contained the fungicide over one of the adjuvants, the mix made by the fungicide and the adjuvant-one presented the highest values of volumetric medianum diameter (VDM) and lower percentage values of droplets smaller than 100 µm (V100), with all deflecting angles tip CP-03, positioning itself as the best technique of reducing spray drift. The addition of mineral oil the mix provided the lowest value of VDM and greater value of V100, when compared to the other mixture. With respect to the potential for reducing the risk of spray drift the deflector angle of 30°, offered the best potential with all the evaluated.
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Kassa, Adane. « Development and testing of mycoinsecticides based on submerged spores and aerial conidia of the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae (Deuteromycotina : Hyphomycetes) for control of locusts, grasshoppers and storage pests ». Doctoral thesis, Göttingen : Cuvillier, 2003. http://webdoc.sub.gwdg.de/diss/kassa/kassa.pdf.

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Rodrigues, Cristina Aparecida Gonçalves. « Efeitos do fogo e da presença animal sobre a biomassa aerea e radicular, nutrientes do solo, composição floristica, fenologia e dinamica de um campo de capim-carona (Elyonurus muticus (Spreng.) O. Ktze.) no pantanal (sub-região de Nhecolandia) ». [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315451.

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Orientadores: Orivaldo Brunini, Arnildo Pott
Tese (doutorado) - Universidade Estadual de Campinas, Instituo de Biologia
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Resumo: O estudo foi realizado em áreas de campo sujo (savana gramíneo-lenhosa) com domínâncía da gramínea Nhumirím natíva Elyonurus EMBRAPA/Pantanal na sub-regiâo da pertencente Nhecolândia, muticus (caronal) , na fazenda à e localizada no Pantanal Mato-grossense (18° 59' S; 56° 39' w e altitude 98m). Somente a rebrota desta gramínea, que ocupa aproximadamente 20% da área da Nhecolândia, é consumida após a queima pelos bovinos, sendo que a criação extensiva destes constitui a principal atividade econômica da região ... Observação: O resumo, na integra, podera ser visualizado nos texto completo da tese digital
Abstract: This study was conducted in cerrado grassland areas (savanna gramíneo-lenhosa) wi th predaminance of the nati ve grass Elyanurus mutícus (caronal) , at Nhumirim ranch owned by EMBRAPA/Pantanal located in Nhecolandia subregion, at Mato Grosso's Pantanal wetland (lSO 59' S; 560 39' W and 98m). This grass, present in appraximately 20 % of Nhecolândia area, is consumed only by cattle are the basic food for the cattle, this experiment aimed to evaluate the abave-ground biomass and the above-ground net primary productivity of the grass and per species, the soil nutrients, the phenology of some species, the botanical and floristic composition, the frequency of occurrence some species in the field and their seed bank under ... Note: The complete abstract in available with the full electronic digital thesis or dissertations
Doutorado
Biologia em Biologia Vegetal
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Lin, Chih-Hung, et 林志宏. « A Two-Level Enhancement for Spread Spectrum Based Hidden Aerial Acoustic Communications and its Applications ». Thesis, 2010. http://ndltd.ncl.edu.tw/handle/34389655724369563563.

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碩士
臺灣大學
資訊工程學研究所
98
Due to the growing popularity of handheld devices, using sound to pass information from audio source to mobile becomes a possible application. Although the throughput offered by channel is relatively low and the quality of audio is not as good as the original, it provides a costless solution for communication with mobile devices through acoustic channel. Many interesting applications based on such communication systems have been proposed. To reach the goal, spread spectrum watermarking technologies have been considered before, but the achieved throughput is very low. Another approach called “Acoustic OFDM” is proposed. The achieved transmission rate is superior to that of the SS-based method, but its associated quality of audio is controversial. We proposed two-level enhancement for spread spectrum watermarking based communication over the hidden aerial acoustic channel. It makes the throughput more than “Acoustic OFDM” method, but keeps the quality of audio as good as SS-based method.
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MIGLIORINI, DUCCIO, PAOLO CAPRETTI et ALBERTO SANTINI. « Phytophthora in natural and anthropic environments : new molecular diagnostic tools for early detection and ecological studies ». Doctoral thesis, 2016. http://hdl.handle.net/2158/1028950.

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L’efficacia di PCR quantitativa basata su una sonda TaqMan specifica per il genere è stata confermata come preciso strumento di rilevamento di DNA di Phytophthora su suolo artificialmente infettato, in suolo di invasatura contaminato proveniente da vivaio ed in campioni di trappole aeree. Nessuna quantificazione di DNA è avvenuta dopo due settimane dalla morte indotta del patogeno e, in confronto con i metodi di isolamento tradizionali, è stata dimostrata una significativa maggiore efficienza come strumento diagnostico. La fluttuazione stagionale di Phytophthora in aria è stata quantificata e descritta per il periodo di campionamento. La tecnica di sequenziamento 454 è stata utilizzata per identificare la tassonomia delle specie di Phytophthora in un hotspot biologico in Western Australia ed al fine di descrivere la patogenicità delle due specie sequenziate con maggior frequenza è stato realizzato un esperimento in serra. Le tecniche di laboratorio utilizzate in questo studio hanno fornito nuove nozioni sull’ecologia di Phytophthora. La PCR quantitativa basata su sonda TaqMan è testata e proposta come efficace strumento di prevenzione verso l’arrivo di specie invasive. Importanza dell’impatto di questo studio L’efficienza della gestione di Phytophthora dipende dalla conoscenza delle caratteristiche patogene di gruppi ristretti di specie o di una singola specie . Ricerche come queste forniscono le basi scientifiche per comprendere l’epidemiologia di una malattia ed applicare un controllo risolutivo. A quantitative PCR technique based on a genus specific TaqMan probe was confirmed as a precise method for detecting Phytophthora DNA in artificially infested soil under laboratory condition, in naturally infested soil and tissues of potted nursery plants and in the filters of air traps. No positive DNA quantification occurred in soil after two weeks from pathogen induced death and a significant higher efficiency as diagnostic tool was demonstrated compared to traditional isolation methods both in soil and plant tissues. Seasonal fluctuation of aerial spread of Phytophthora was also quantified and described. A 454 sequencing approach was used to identify the Phytophthora species present in a biological hotspot area in Western Australia, and a glass house experiment was performed in order to describe the pathogenicity traits of the two most frequently detected species. The lab procedures used in this study provided a more precise knowledge of Phytophthora ecology. The quantitative PCR assay based on designed TaqMan probe was demonstrated to be very efficient and is proposed as a reliable early detection instrument of prevention against the income of invasive species. Efficient management of Phytophthora depends to the knowledge of pathogenicity traits in restrict groups or single species. Investigations like those presented in this thesis contribute the scientific bases to understand the epidemiology of disease and to apply a successful control.
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Wu, Lei. « A comparison of nature inspired intelligent optimization methods in aerial spray deposition management ». 2002. http://purl.galileo.usg.edu/uga%5Fetd/wu%5Flei%5F200212%5Fms.

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Livres sur le sujet "Aerial spread"

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Teske, Milton E. Spread factor regression SPREAD, version 2.0 : User manual. Davis, CA : USDA Forest Service Forest Pest Management, 1992.

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Kirk, I. W. Aerial applicators spray nozzle handbook. [Washington, D.C.] : U.S. Dept. of Agriculture, Argicultiral Research Service, 2004.

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Teske, Milton E. Biological/insecticide dose-response data collected for FSCBG and GypsES Spray Advisor models. Davis, CA : USDA Forest Service, Forest Health Technology Enterprise Team, 1996.

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They Spread Their Wings. The History Press Ltd, 2013.

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Lowry, Michael. Gridiron Air War ! : Football's Aerial Assault and Spread Passing Attack. Independently Published, 2018.

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Goodrum, Alastair. They Spread Their Wings : Six Courageous Airmen in Combat in the Second World War. History Press Limited, The, 2013.

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Richemond-Barak, Daphné. Tunnels in Conflict. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190457242.003.0001.

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This chapter paints a panoramic and multifaceted picture of tunnel warfare across time and geography. It begins with World War I, which has marked history with powerful tunnel mining attacks, face-to-face underground combat, and the demonstration of how tunnel users improve their skills on the go. It proceeds to focus on underground combat through World War II, the Vietnam War, the wars in Afghanistan, the War in Syria, and cross-border tunnels in Egypt and Israel. It shows that underground warfare has evolved into a global phenomenon that is currently benefiting from strategic and technological tailwinds. Asymmetric conflicts, where the aerial and ground superiority of one party stands out, are particularly vulnerable to the spread of underground warfare.
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Chapitres de livres sur le sujet "Aerial spread"

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Potter, W. D., W. Bi, D. Twardus, H. Thistle, M. J. Twery, J. Ghent et M. Teske. « Aerial Spray Deposition Management Using the Genetic Algorithm ». Dans Intelligent Problem Solving. Methodologies and Approaches, 210–19. Berlin, Heidelberg : Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45049-1_26.

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Kirk, I. W., et H. H. Tom. « Precision GPS Flow Control for Aerial Spray Applications ». Dans Proceedings of the Third International Conference on Precision Agriculture, 815–17. Madison, WI, USA : American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/1996.precisionagproc3.c96.

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Fritz, Bradley K., W. Clint Hoffmann, Robert E. Wolf, Scott Bretthauer et W. E. Bagley. « Wind Tunnel and Field Evaluation of Drift from Aerial Spray Applications with Multiple Spray Formulations ». Dans Pesticide Formulation and Delivery Systems : 32ndVolume, Innovating Legacy Products for New Uses, 96–113. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 2012. http://dx.doi.org/10.1520/stp104403.

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Fritz, Bradley K., W. Clint Hoffmann, Robert E. Wolf, Scott Bretthauer et W. E. Bagley. « Wind Tunnel and Field Evaluation of Drift from Aerial Spray Applications with Multiple Spray Formulations ». Dans Pesticide Formulation and Delivery Systems : 32ndVolume, Innovating Legacy Products for New Uses, 1–18. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 2012. http://dx.doi.org/10.1520/stp104403t.

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Fritz, Bradley K., W. Clint Hoffmann et Ryan S. Henry. « The Effect of Adjuvants at High Spray Pressures for Aerial Applications ». Dans Pesticide Formulation and Delivery Systems : 36th Volume, Emerging Trends Building on a Solid Foundation, 133–48. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 2016. http://dx.doi.org/10.1520/stp159520150086.

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Wu, Yangdong, Jiajie Lu et Yiquan Wang. « Research on Multiresponse Robustness Optimization for Unmanned Aerial Vehicle Electrostatic Spray System ». Dans Advances in Mechanical Design, 719–28. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9941-2_59.

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Potter, W. D., W. Bi, D. Twardus, H. Thistle, M. J. Twery, J. Ghent et M. Teske. « Handling the Back Calculation Problem in Aerial Spray Models Using a Genetic Algorithm ». Dans Practical Applications of Computational Intelligence Techniques, 177–222. Dordrecht : Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0678-1_6.

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Fritz, Bradley K., W. Clint Hoffmann, W. E. Bagley et Andrew Hewitt. « Field Scale Evaluation of Spray Drift Reduction Technologies from Ground and Aerial Application Systems ». Dans Pesticide Formulations and Delivery Systems, 31stVolume : Innovative Green Chemistries for the 21stCentury, 179–95. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 2011. http://dx.doi.org/10.1520/stp153720120013.

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Young, Alvin L. « The Testing of Aerial Spray Equipment, and Ecological Impacts of the Programs at Eglin Air Force Base, Florida ». Dans The History, Use, Disposition and Environmental Fate of Agent Orange, 191–261. New York, NY : Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-87486-9_6.

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Clark, J. M., J. R. Marion et D. M. Tessier. « Effect of Spray Adjuvant on Off-Site Airborne and Deposited Parathion from Cranberry Bogs Treated by Aerial Application and Chemical Irrigation ». Dans ACS Symposium Series, 243–59. Washington, DC : American Chemical Society, 1993. http://dx.doi.org/10.1021/bk-1993-0522.ch021.

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Actes de conférences sur le sujet "Aerial spread"

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Huang, Qiyuan, Abolfazl Razi, Fatemeh Afghah et Peter Fule. « Wildfire Spread Modeling with Aerial Image Processing ». Dans 2020 IEEE 21st International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM). IEEE, 2020. http://dx.doi.org/10.1109/wowmom49955.2020.00063.

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Freitas, Heitor, Lucas Tomazela, Alef Vinicius Cardoso e Silva et Jo Ueyama. « Using Unmanned Aerial Vehicle to Spread Natural Enemies for Biological Control in Dynamic Environments ». Dans 2018 XLIV Latin American Computer Conference (CLEI). IEEE, 2018. http://dx.doi.org/10.1109/clei.2018.00044.

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Navarro, Rafael, et M. Angeles Losada. « On The True Shape of the Optical Point Spread Function in the Human Eye ». Dans Vision Science and its Applications. Washington, D.C. : Optica Publishing Group, 1995. http://dx.doi.org/10.1364/vsia.1995.saa1.

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There are basically three different approaches to assess in vivo the optical quality of the retinal image of the eye [1], but none of them is able to provide a reliable estimate of the true shape of the Point Spread Function, PSF. Interferometric methods can provide accurate estimates of the ocular MTF, but to obtain the PSF the Phase Transfer Function, PTF is also needed. The PSF can be computed from wave aberration data. However, the reliability of these computations is unclear, since in practice, it is difficult to measure higher order aberrations, which may have an important contribution to the optical quality of the retinal image. Finally, the double pass method directly provides the aerial PSF, which, however, is affected twice by ocular aberrations. Furthermore, it has been recently shown [2] that the double-pass aerial PSF is actually the autocorrelation of the retinal PSF, which means that the single pass MTF can be accurately estimated, but the PTF is lost. Therefore, the true PSF can not be estimated, and odd aberrations such as coma are symmetrized in the double passage so that they can not be determined.
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Todorovic, Branislav M., et Vladimir D. Orlic. « An application of direct sequence spread spectrum to unmanned aerial vehicle PPM control signal protection ». Dans TELSIKS 2009 - 2009 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Services. IEEE, 2009. http://dx.doi.org/10.1109/telsks.2009.5339440.

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Todorovic, Branislav M., et Vladimir D. Orlic. « Bayesian analysis of direct sequence spread spectrum unmanned aerial vehicle PPM control signal two-level detection ». Dans 2011 IEEE 20th International Symposium on Industrial Electronics (ISIE). IEEE, 2011. http://dx.doi.org/10.1109/isie.2011.5984258.

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Belso, Zoltan, Tamas Szilagyi, Laszlo Pap, Kalman Elek et Istvan Koller. « Joint Application of Spread Spectrum and OFDM Modulation for Microwave Radio Communication Used for Unmanned Aerial Vehicle ». Dans 2011 IEEE Vehicular Technology Conference (VTC 2011-Spring). IEEE, 2011. http://dx.doi.org/10.1109/vetecs.2011.5956330.

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Navarro, R., D. Geslin, M. A. Losada et P. Artal. « The Effect of the Visual Stumulus on the Eye's Refractive State Monitored with the Aerial Retinal Image ». Dans Ophthalmic and Visual Optics. Washington, D.C. : Optica Publishing Group, 1991. http://dx.doi.org/10.1364/ovo.1991.thc2.

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Lately a method to record the aerial retinal image of a point test after double pass through the optical media of the eye was developed at the Instituto de Optica (Santamaría et al. 1987). Until now we used a point source as fixation target so that it served as the stimulus for accommodation. Here we explore how the visual stimulus affects the shape of the point spread function (PSF), or equivalently the modulation transfer function (MTF). For that purpose, we compare gratings with point sources to determine how they can affect or modify the refractive state of the eye, and in consequence, the shape of the PSF and MTF.
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Sharifi, Farid, Youmin Zhang et Brandon W. Gordon. « Voronoi-Based Coverage Control for Multi-Quadrotor UAVs ». Dans ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48651.

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This paper investigates the problem of covering an environment using a group of quadrotor Unmanned Aerial Vehicles (UAVs) based on locational optimization techniques to assign Voronoi regions to vehicles. In comparison with the standard coverage control problems for single integrator agents, we design a planar position controller for UAVs to spread out over an environment to provide coverage. The stability of entire system is guaranteed using LaSalle’s invariance principle, and numerical simulation is provided to show the effectiveness of the proposed method.
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Techy, Laszlo, Craig A. Woolsey et David G. Schmale. « Monitoring the Spread of a Plant Pathogen in the Lower Atmosphere using Unmanned Aerial Vehicles and a Buoyancy-Controlled Weather Balloon ». Dans Aerospace Technology Conference and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2009. http://dx.doi.org/10.4271/2009-01-3125.

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Sasco, Elena. « Influența restricțiilor hidrice asupra fungului Fusarium Solani Var. Coeruleum ». Dans International Scientific Symposium "Plant Protection – Achievements and Prospects". Institute of Genetics, Physiology and Plant Protection, Republic of Moldova, 2020. http://dx.doi.org/10.53040/9789975347204.75.

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The article presents data on the influence of water restrictions on the fungi Fusarium solani var. coeruleum. The considerable decrease of the share of the strain factor from 68.88% to 16.97% for F. solani, denotes the high survival capacity of the fungus in conditions of osmotic restrictions produced by the osmotic substance PEG, thus confirming the data from the literature. The spread of the mycelium in the form of plaque or film, the intensity of pigmentation, the presence of aerial mycelium show changes in the adaptation of the fungus to osmotic conditions, which have significantly affected the growth of F. solani.
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Rapports d'organisations sur le sujet "Aerial spread"

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Brophy, Kenny, et Alison Sheridan, dir. Neolithic Scotland : ScARF Panel Report. Society of Antiquaries of Scotland, juin 2012. http://dx.doi.org/10.9750/scarf.06.2012.196.

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The main recommendations of the Panel report can be summarised as follows: The Overall Picture: more needs to be understood about the process of acculturation of indigenous communities; about the Atlantic, Breton strand of Neolithisation; about the ‘how and why’ of the spread of Grooved Ware use and its associated practices and traditions; and about reactions to Continental Beaker novelties which appeared from the 25th century. The Detailed Picture: Our understanding of developments in different parts of Scotland is very uneven, with Shetland and the north-west mainland being in particular need of targeted research. Also, here and elsewhere in Scotland, the chronology of developments needs to be clarified, especially as regards developments in the Hebrides. Lifeways and Lifestyles: Research needs to be directed towards filling the substantial gaps in our understanding of: i) subsistence strategies; ii) landscape use (including issues of population size and distribution); iii) environmental change and its consequences – and in particular issues of sea level rise, peat formation and woodland regeneration; and iv) the nature and organisation of the places where people lived; and to track changes over time in all of these. Material Culture and Use of Resources: In addition to fine-tuning our characterisation of material culture and resource use (and its changes over the course of the Neolithic), we need to apply a wider range of analytical approaches in order to discover more about manufacture and use.Some basic questions still need to be addressed (e.g. the chronology of felsite use in Shetland; what kind of pottery was in use, c 3000–2500, in areas where Grooved Ware was not used, etc.) and are outlined in the relevant section of the document. Our knowledge of organic artefacts is very limited, so research in waterlogged contexts is desirable. Identity, Society, Belief Systems: Basic questions about the organisation of society need to be addressed: are we dealing with communities that started out as egalitarian, but (in some regions) became socially differentiated? Can we identify acculturated indigenous people? How much mobility, and what kind of mobility, was there at different times during the Neolithic? And our chronology of certain monument types and key sites (including the Ring of Brodgar, despite its recent excavation) requires to be clarified, especially since we now know that certain types of monument (including Clava cairns) were not built during the Neolithic. The way in which certain types of site (e.g. large palisaded enclosures) were used remains to be clarified. Research and methodological issues: There is still much ignorance of the results of past and current research, so more effective means of dissemination are required. Basic inventory information (e.g. the Scottish Human Remains Database) needs to be compiled, and Canmore and museum database information needs to be updated and expanded – and, where not already available online, placed online, preferably with a Scottish Neolithic e-hub that directs the enquirer to all the available sources of information. The Historic Scotland on-line radiocarbon date inventory needs to be resurrected and kept up to date. Under-used resources, including the rich aerial photography archive in the NMRS, need to have their potential fully exploited. Multi-disciplinary, collaborative research (and the application of GIS modelling to spatial data in order to process the results) is vital if we are to escape from the current ‘silo’ approach and address key research questions from a range of perspectives; and awareness of relevant research outside Scotland is essential if we are to avoid reinventing the wheel. Our perspective needs to encompass multi-scale approaches, so that ScARF Neolithic Panel Report iv developments within Scotland can be understood at a local, regional and wider level. Most importantly, the right questions need to be framed, and the right research strategies need to be developed, in order to extract the maximum amount of information about the Scottish Neolithic.
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