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Journal articles on the topic 'Aerial spread'

Author: Grafiati

Published: 10 March 2023

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1

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

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2

Shelstad, Dixon, Lloyd Queen, David French, and Daniel Fitzpatrick. "Describing the Spread of Oak Wilt Using a Geographic Information System." Arboriculture & Urban Forestry 17, no. 7 (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 distance

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Honda, Yoko, Norihisa Yokouchi, and 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, and 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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5

Lee, Jihwan, Chulyoung Kwak, Seongwon Kim, and 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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6

Baker, F. A., K. Knowles, T. R. Meyer, and 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 (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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7

Chok, S. E., M. C. E. Grafton, I. J. Yule, and M. J. Manning. "Capability of ground fertiliser placement when spread from fixed wing aircraft." NZGA: Research and Practice Series 16 (January 1, 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-shape

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8

Correia, Carlos A. M., Fabio A. A. Andrade, Agnar Sivertsen, et al. "Comprehensive Direct Georeferencing of Aerial Images for Unmanned Aerial Systems Applications." Sensors 22, no. 2 (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.

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Pastalka, Tomas, Suzanne Rooney-Latham, Kathleen Kosta, et al. "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 (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 pla

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Hart, Henry, Daniel D. B. Perrakis, Stephen W. Taylor, Christopher Bone, and Claudio Bozzini. "Georeferencing Oblique Aerial Wildfire Photographs: An Untapped Source of Fire Behaviour Data." Fire 4, no. 4 (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 a

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11

Helms, Jackson A., Aaron P. Godfrey, Tayna Ames, and Eli S. Bridge. "Are invasive fire ants kept in check by native aerial insectivores?" Biology Letters 12, no. 5 (2016): 20160059. http://dx.doi.org/10.1098/rsbl.2016.0059.

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Aerial predator–prey interactions may impact populations of many terrestrial species. Here, we use altitude loggers to study aerial foraging in a native insectivore, the purple martin ( Progne subis ), in the southern USA. Purple martins fed primarily on mating queens and males of the invasive red imported fire ant ( Solenopsis invicta ), and doubled their foraging efficiency by doing so. Across the USA, purple martins likely eat billions of fire ant queens each year, potentially impacting the spread of this species. Alternatively, predation on fire ants may help sustain populations of purple

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12

Fuhrmann, Matthew, and Michael C. Horowitz. "Droning On: Explaining the Proliferation of Unmanned Aerial Vehicles." International Organization 71, no. 2 (2017): 397–418. http://dx.doi.org/10.1017/s0020818317000121.

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AbstractUnmanned Aerial Vehicles (UAVs), more popularly known as “drones,” have become emblematic of twenty-first century military technologies but scholars have yet to convincingly explain the drivers of UAV proliferation. Using the first systematic data set of UAV proliferation, this research note examines the spread of UAVs in the context of scholarly debates about interests versus capacity in explaining policy adoption. The results yield important insights for both IR scholarship and the policy-making community. While countries that experience security threats—including territorial dispute

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13

Livingston, R. L., J. E. Dewey, D. P. Beckman, and L. E. Stipe. "Distribution of the Balsam Woolly Adelgid in Idaho." Western Journal of Applied Forestry 15, no. 4 (2000): 227–31. http://dx.doi.org/10.1093/wjaf/15.4.227.

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Abstract The balsam woolly adelgid (Adelges piceae) was introduced from Europe to northeastern North America in about 1900. In 1983, it was discovered infesting fir trees in Idaho. Since then, aerial and ground surveys have documented its spread in Idaho over an area of approximately 14,000 mi2 (8,960,000 ac). It now covers most of the central one-third of the state. Aerial surveys in 1997 and 1998 identified about 125,000 ac of host type with dead or damaged trees. Subalpine fir (Abies lasiocarpa) is a critical species in many high elevation areas. The effects of the balsam wooly adelgid on a

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14

Orlikowski, Leszek, Magdalena Pļaszek, Adam Wojdyļa, and Czesļaw Skrzypczak. "First Notice of Phytophthora Aerial Blight and Crown Rot on Pansies in Poland." Journal of Plant Protection Research 50, no. 2 (2010): 233–37. http://dx.doi.org/10.2478/v10045-010-0041-1.

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First Notice ofPhytophthoraAerial Blight and Crown Rot on Pansies in PolandPhytophthora cactorumwas detected on &9/10; of pansies showing yellowing of leaves and crown rot symptoms and constituted about 90% of isolates obtained.Botrytis cinerea, Fusarium avenaceum, F. solaniandPythium ultimumwere also isolated from diseased tissues. Using rhododendron leaves as the bait,P. cactorumwas detected in pansy substratum as well as from soil under the mata. Isolates obtained from diseased plants, substratum and soil under mata colonized leaves, stem parts and roots of pansy. Necroses spread faster

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15

Aylor, Donald E. "SPREAD OF PLANT DISEASE ON A CONTINENTAL SCALE: ROLE OF AERIAL DISPERSAL OF PATHOGENS." Ecology 84, no. 8 (2003): 1989–97. http://dx.doi.org/10.1890/01-0619.

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16

Todorovic, Branislav, and Vladimir Orlic. "Direct sequence spread spectrum scheme for an unmanned aerial vehicle PPM control signal protection." IEEE Communications Letters 13, no. 10 (2009): 727–29. http://dx.doi.org/10.1109/lcomm.2009.091293.

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17

Warburton, B. "Control of Bennett's and Tammar Wallabies in New Zealand Using Compound 1080 Gel on Foliage Baits." Wildlife Research 17, no. 5 (1990): 541. http://dx.doi.org/10.1071/wr9900541.

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Trials were carried out against Bennett's wallabies (Macropus rufogriseus rufogriseus) and tammar wallabies (M. eugenii) in areas of indigenous forest where browsing is preventing or damaging regeneration. Compound 1080 (sodium monofluoroacetate) in a carbopol gel was spread on the foliage of palatable plants. Numbers of Bennett's wallabies were reduced by 91% and tammar wallabies by 87%. These kill estimates compare favourably with those achieved using aerially sown baits. The costs per hectare of gel poisoning were estimated to be as little as 40% of those for aerial baiting, but the costs o

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18

Call, PT, and FA Albini. "Aerial and Surface Fuel Consumption in Crown Fires." International Journal of Wildland Fire 7, no. 3 (1997): 259. http://dx.doi.org/10.1071/wf9970259.

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An empirical model is presented which relates fractional reduction in loading to fuel element diameter and moisture content for surface and aerial fuels consumed near the fire front in a spreading crown fire. The model is based upon data from a series of experimental crown fires in immature jack pine. Its intended use is to permit calculation of fuel consumption per unit area (kg/m2) needed to estimate edge intensity (kW/m) from the spread rate of a crown fire. Model predictions of small fuel component fractional loading reduction had a root-mean-square error of almost 0.2 for our calibration

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19

Liu, J., S. Ji, C. Zhang, and Z. Qin. "EVALUATION OF DEEP LEARNING BASED STEREO MATCHING METHODS: FROM GROUND TO AERIAL IMAGES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2 (May 30, 2018): 593–97. http://dx.doi.org/10.5194/isprs-archives-xlii-2-593-2018.

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Dense stereo matching has been extensively studied in photogrammetry and computer vision. In this paper we evaluate the application of deep learning based stereo methods, which were raised from 2016 and rapidly spread, on aerial stereos other than ground images that are commonly used in computer vision community. Two popular methods are evaluated. One learns matching cost with a convolutional neural network (known as MC-CNN); the other produces a disparity map in an end-to-end manner by utilizing both geometry and context (known as GC-net). First, we evaluate the performance of the deep learni

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20

Matthews, G. A. "The Role for Drones in Future Aerial Pesticide Applications." Outlooks on Pest Management 32, no. 5 (2021): 221–24. http://dx.doi.org/10.1564/v32_oct_10.

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Aircraft have been used to apply pesticides for decades, but their use has been largely confined to spraying crops grown on very large fields, mostly in north, central and south America. Aerial spraying has also been vital in controlling locust swarms spread over vast areas. The development of unmanned aircraft, known as drones, has benefitted smallscale farmers as the drone can be controlled effectively over specific areas. Drones have also benefitted vector control by detecting the breeding sites of mosquitoes, which can be sprayed subsequently with larvicides, or controlled by applying spac

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21

Plucinski, Matt P., and Elsa Pastor. "Criteria and methodology for evaluating aerial wildfire suppression." International Journal of Wildland Fire 22, no. 8 (2013): 1144. http://dx.doi.org/10.1071/wf13040.

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Aircraft are often used to drop suppressants and retardants to assist wildfire containment. Drop effectiveness has rarely been measured due to the difficulties in collecting data from wildfires and running field experiments and the absence of definitions and measures. This paper presents a set of criteria and methodologies for evaluating the effectiveness of aerial suppression drops. These consider drop placement, coverage and effect on fire behaviour. This paper also details drop site and delivery conditions that are required for determining causal factors that influence drop effectiveness an

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22

Hong, Suk-Ju, Yunhyeok Han, Sang-Yeon Kim, Ah-Yeong Lee, and Ghiseok Kim. "Application of Deep-Learning Methods to Bird Detection Using Unmanned Aerial Vehicle Imagery." Sensors 19, no. 7 (2019): 1651. http://dx.doi.org/10.3390/s19071651.

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Wild birds are monitored with the important objectives of identifying their habitats and estimating the size of their populations. Especially in the case of migratory bird, they are significantly recorded during specific periods of time to forecast any possible spread of animal disease such as avian influenza. This study led to the construction of deep-learning-based object-detection models with the aid of aerial photographs collected by an unmanned aerial vehicle (UAV). The dataset containing the aerial photographs includes diverse images of birds in various bird habitats and in the vicinity

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23

Szabolcsi, Róbert. "Pole Placement Technique Applied in Unmanned Aerial Vehicles Automatic Flight Control Systems Design." Land Forces Academy Review 23, no. 1 (2018): 88–98. http://dx.doi.org/10.2478/raft-2018-0011.

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Abstract Unmanned aerial vehicles are widely spread and intensively used ones both in governmental and in private applications. The standard arrangements of the commercial-off-the-shelves unmanned aerial vehicles sometimes neglect application of the automatic flight control system onboard. However, there are many initiatives to ensure autonomous flights of the unmanned aerial vehicles via pre-programmed flight paths. Moreover, automatic flight control system can ensure necessary level of the flight safety both in VFR and IFR flights. The aim of this study is to guide UAV users in set up commer

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24

Stilwell, Abby R., Donald C. Rundquist, David B. Marx, and Gary L. Hein. "Differential Spatial Gradients of Wheat Streak Mosaic Virus into Winter Wheat from a Central Mite-Virus Source." Plant Disease 103, no. 2 (2019): 338–44. http://dx.doi.org/10.1094/pdis-01-18-0025-re.

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The wheat curl mite (WCM), Aceria tosichella Keifer, transmits three potentially devastating viruses to winter wheat. An increased understanding of mite movement and subsequent virus spread through the landscape is necessary to estimate the risk of epidemics by the virus in winter wheat. Owing to the small size of WCMs, their dispersal via wind is hard to monitor; however, the viruses they transmit produce symptoms that can be detected with remote sensing. The objective of this study was to characterize the spatial dispersal of the virus from a central mite-virus source. Virus infection gradie

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25

Suharjo, S., Sugiharto Budi Santoso, Reshinta Purnaningsih, S. Suryanto, and Yuliarta Rudi Prasetyo. "The Use of Infra Red Aerial Photo for Identification the Existance and Spread of Cave in Planning sub District, Eromoko District, Wonogiri Regency." Forum Geografi 15, no. 1 (2016): 46. http://dx.doi.org/10.23917/forgeo.v15i1.4662.

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Science that studied all of the aspect related to cave and their circles (speleology) in Indonesia does not still quite expand. Expantion more advanced need all sorts of research, publication and its interest to an academic party who get in touch with cave and their circles. One of them the basic of data collection about the existence and the spread of cave. The usual manner that is used to know the existence and the spread of cave, is by means of the analysis topography map which is continued by terrestrial research. Weakness for this manner is it need huge time, cost and energy. The making u

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26

Jamieson, A., I. E. Bassett, L. M. W. Hill, et al. "Aerial surveillance to detect kauri dieback in New Zealand." New Zealand Plant Protection 67 (January 8, 2014): 60–65. http://dx.doi.org/10.30843/nzpp.2014.67.5723.

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The causal agent of kauri dieback Phytophthora taxon Agathis (PTA) poses a significant threat to kauri (Agathis australis) in northern New Zealand Groundbased field surveys have previously confirmed PTA presence at several locations across Auckland and Northland However ground surveys are limited to areas adjacent to tracks because of difficulty and cost associated with offtrack access in steep terrain along with concern about furthering spread of PTA A methodology for aerial photographic surveillance of kauri dieback was developed and implemented in Wait257;kere Ranges Hunua Ranges and adjace

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Kamiya, K., T. Fuse, and M. Takahashi. "APPLICABILITY EVALUATION OF OBJECT DETECTION METHOD TO SATELLITE AND AERIAL IMAGERIES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 21, 2016): 229–34. http://dx.doi.org/10.5194/isprs-archives-xli-b7-229-2016.

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Since satellite and aerial imageries are recently widely spread and frequently observed, combination of them are expected to complement spatial and temporal resolution each other. One of the prospective applications is traffic monitoring, where objects of interest, or vehicles, need to be recognized automatically. Techniques that employ <i>object detection</i> before <i>object recognition</i> can save a computational time and cost, and thus take a significant role. However, there is not enough knowledge whether object detection method can perform well on satellite and a

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28

Sreenath K, Hemalatha Reddy G, Venkata Ranga Reddy K, Sneha Sandhya G, and Mahaboob Basha M D. "Deep learning approach for uav-based wildfire detection and segmentation." South Asian Journal of Engineering and Technology 12, no. 3 (2022): 96–102. http://dx.doi.org/10.26524/sajet.2022.12.45.

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   Wildfires are a worldwide natural disaster causing important economic damages and loss of lives . Early detection and prediction of fire spread can help reduce affected areas and improve firefighting. Unmanned Aerial Vehicles were employed to tackle this problem due to their HIGH flexibility, their low-cost, and their ability to cover wide areas during the day or night. However , they are still limited by challenging problems such as small fire size, background complexity, and image degradation .To deal with the limitations, we adapted and optimized Deep Learning methods t

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Jafar Ali Ibrahim S, Prathyusha Y, Akhila B, Rajini M, and Naveen Sai U. "A machine learning-based prediction model for preterm birth in rural areas." South Asian Journal of Engineering and Technology 12, no. 3 (2022): 103–8. http://dx.doi.org/10.26524/sajet.2022.12.46.

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   Wildfires are a worldwide natural disaster causing important economic damages and loss of lives . Early detection and prediction of fire spread can help reduce affected areas and improve firefighting. Unmanned Aerial Vehicles were employed to tackle this problem due to their HIGH flexibility, their low-cost, and their ability to cover wide areas during the day or night. However , they are still limited by challenging problems such as small fire size, background complexity, and image degradation .To deal with the limitations, we adapted and optimized Deep Learning methods t

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30

조관행 and Heon Joo Jung. "Policy Implications of the Spread on Unmanned Aerial Vehicles in Northeast Asia and the Korean Peninsula." National Strategy 22, no. 4 (2016): 93–122. http://dx.doi.org/10.35390/sejong.22.4.201611.004.

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Kamiya, K., T. Fuse, and M. Takahashi. "APPLICABILITY EVALUATION OF OBJECT DETECTION METHOD TO SATELLITE AND AERIAL IMAGERIES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 21, 2016): 229–34. http://dx.doi.org/10.5194/isprsarchives-xli-b7-229-2016.

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Since satellite and aerial imageries are recently widely spread and frequently observed, combination of them are expected to complement spatial and temporal resolution each other. One of the prospective applications is traffic monitoring, where objects of interest, or vehicles, need to be recognized automatically. Techniques that employ &lt;i&gt;object detection&lt;/i&gt; before &lt;i&gt;object recognition&lt;/i&gt; can save a computational time and cost, and thus take a significant role. However, there is not enough knowledge whether object detection method can

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32

Pliushch, Oleksandr, Viktor Vyshnivskyi, Volodymyr Tolubko, et al. "Performance Study of Spread Spectrum Systems with Hard Limiters." International Journal of Computer Network and Information Security 12, no. 5 (2020): 1–15. http://dx.doi.org/10.5815/ijcnis.2020.05.01.

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Use of spread spectrum systems in telecommunications is studied. It is shown that spread spectrum techniques can substantially enhance noise and interference immunity in the currently deployed information transmission networks. Primitive polynomials are proposed to obtain respective spreading codes. A spreading code consisting of 1023 chips is synthesized and its characteristics are studied. It is deduced that powerful interferences can exceed dynamic range of the receiving part of the system and, as a result, deteriorate information transmission. To overcome this problem, utilization of limit

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Michaletz, S. T., E. A. Johnson, W. E. Mell, and D. F. Greene. "Timing of fire relative to seed development controls availability of non-serotinous aerial seed banks." Biogeosciences Discussions 9, no. 11 (2012): 16705–51. http://dx.doi.org/10.5194/bgd-9-16705-2012.

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Abstract. The existence of non-serotinous, non-sprouting species in fire regimes where serotiny confers an adaptive advantage is puzzling, particularly when these species recruit poorly from soil seed banks or from burn edges. In this paper, white spruce (Picea glauca (Moench) Voss) was used to show that the timing of fire relative to seed development can control aerial seed bank availability for non-serotinous species. To estimate seed survival in closed cones during crown fires, cone heating was simulated using a one-dimensional conduction model implemented in a computational fluid dynamics

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Negrel, Lise, Raymonde Baltenweck, Gerard Demangeat, et al. "Comparative Metabolomic Analysis of Four Fabaceae and Relationship to In Vitro Nematicidal Activity against Xiphinema index." Molecules 27, no. 10 (2022): 3052. http://dx.doi.org/10.3390/molecules27103052.

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The grapevine fanleaf virus (GFLV), responsible for fanleaf degeneration, is spread in vineyards by the soil nematode Xiphinema index. Nematicide molecules were used to limit the spread of the disease until they were banned due to negative environmental impacts. Therefore, there is a growing interest in alternative methods, including plant-derived products with antagonistic effects to X. index. In this work, we evaluated the nematicidal potential of the aerial parts and roots of four Fabaceae: sainfoin (Onobrychis viciifolia), birdsfoot trefoil (Lotus corniculatus), sweet clover (Melilotus alb

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Cooke, Brian, Keith Springer, Lorenzo Capucci, and Greg Mutze. "Rabbit haemorrhagic disease: Macquarie Island rabbit eradication adds to knowledge on both pest control and epidemiology." Wildlife Research 44, no. 2 (2017): 93. http://dx.doi.org/10.1071/wr16221.

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Rabbit haemorrhagic disease virus (RHDV), introduced into in Australia and New Zealand as a biological-control agent for wild rabbits, is least efficacious in cool humid areas where a non-pathogenic calicivirus (RCV-A1) also circulates. Heavy rabbit mortality following release of RHDV on cold sub-Antarctic Macquarie Island, where RCV-A1 was apparently absent, not only complemented the planned rabbit eradication operations, especially by reducing secondary poisoning of sea-birds from aerial baiting, but also ruled out cool or humid climate as a major limiting factor of disease spread. In turn,

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Munawar, Hafiz Suliman, Zahra Gharineiat, Junaid Akram, and Sara Imran Khan. "A Framework for Burnt Area Mapping and Evacuation Problem Using Aerial Imagery Analysis." Fire 5, no. 4 (2022): 122. http://dx.doi.org/10.3390/fire5040122.

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The study aims to develop a holistic framework for maximum area coverage of a disaster region during a bushfire event. The monitoring and detection of bushfires are essential to assess the extent of damage, its direction of spread, and action to be taken for its containment. Bushfires limit human’s access to gather data to understand the ground situation. Therefore, the application of Unmanned Aerial Vehicles (UAVs) could be a suitable and technically advanced approach to grasp the dynamics of fires and take measures to mitigate them. The study proposes an optimization model for a maximal area

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Chehadeh, Mohamad, Mohammad Wahbah, Mohammad Awad, et al. "Aerial firefighting system for suppression of incipient cladding fires." Field Robotics 1, no. 1 (2021): 203–30. http://dx.doi.org/10.55417/fr.2021008.

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Fires occurring at the exterior of high-rise buildings can be hard to tackle using current firefighting technology and tactics. Accessing fires at high floors is difficult, and can often result in delays in fire suppression, which in turn may lead to an uncontrollable fire. This paper proposes a semiautomated system of multiple, aerial robots that can suppress incipient cladding fires in high-rise buildings. Each developed UAV has six litres of pressurised aqueous film-forming foam (AFFF) solution, a two degrees of freedom nozzle, a thermal imaging camera (TIC), and an automated algorithm that

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Hennon, P. E., E. M. Hansen, and C. G. Shaw III. "Dynamics of decline and mortality of Chamaecyparis nootkatensis in southeast Alaska." Canadian Journal of Botany 68, no. 3 (1990): 651–62. http://dx.doi.org/10.1139/b90-085.

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Alaska-cedar, Chamaecyparis nootkatensis (D. Don) Spach, has been dying in undisturbed forests throughout southeast Alaska for the last 100 years. To determine if decline spreads, boundaries of mortality at seven sites with decline were mapped using aerial photographs taken in 1927, 1948, 1965, and 1976. Mortality was present at all seven sites in 1927. The boundaries of mortality have since expanded, but not by more than 100 m beyond the 1927 limit. In ground surveys, dead Alaska-cedar trees, classified according to their degree of deterioration, were recorded in 427 plots along 39 transects.

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Heim, René, Ian Wright, Peter Scarth, Angus Carnegie, Dominique Taylor, and Jens Oldeland. "Multispectral, Aerial Disease Detection for Myrtle Rust (Austropuccinia psidii) on a Lemon Myrtle Plantation." Drones 3, no. 1 (2019): 25. http://dx.doi.org/10.3390/drones3010025.

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Disease management in agriculture often assumes that pathogens are spread homogeneously across crops. In practice, pathogens can manifest in patches. Currently, disease detection is predominantly carried out by human assessors, which can be slow and expensive. A remote sensing approach holds promise. Current satellite sensors are not suitable to spatially resolve individual plants or lack temporal resolution to monitor pathogenesis. Here, we used multispectral imaging and unmanned aerial systems (UAS) to explore whether myrtle rust (Austropuccinia psidii) could be detected on a lemon myrtle (B

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Hoy, Marjorie A., J. J. Rob Groot, and Hugo E. Baan. "Influence of aerial dispersal on persistence and spread of pesticide-resistant Metaseiulus occidentalis in California almond orchards." Entomologia Experimentalis et Applicata 37, no. 1 (1985): 17–31. http://dx.doi.org/10.1111/j.1570-7458.1985.tb03448.x.

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Xu, X. M. "Stochastic simulation of the spread of race-specific and race-nonspecific aerial fungal pathogens in cultivar mixtures." Plant Pathology 49, no. 2 (2000): 207. http://dx.doi.org/10.1046/j.1365-3059.2000.00444.x.

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Xu, X. M., and M. S. Ridout. "Stochastic simulation of the spread of race-specific and race-nonspecific aerial fungal pathogens in cultivar mixtures." Plant Pathology 49, no. 2 (2000): 207–18. http://dx.doi.org/10.1046/j.1365-3059.2000_t01-1-00444.x.

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Todorovic, Branislav, and Vladimir Orlic. "Analysis and optimization of direct sequence spread spectrum scheme for an unmanned aerial vehicle PPM control signal." Facta universitatis - series: Electronics and Energetics 23, no. 3 (2010): 319–32. http://dx.doi.org/10.2298/fuee1003319t.

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Binary pulse-position modulated (PPM) control signal is widely used in remotely controlled unmanned aerial vehicles. It consists of data frames, which contain a synchronizing pulse followed by a number of shorter pulses equal to the number of channels N. In this paper we present analysis and optimization of direct sequence spread spectrum (DS-SS) scheme for PPM control signal protection. That scheme uses (N+1) pseudonoise (PN) sequences: one of them (PN0) is assigned to the synchronizing pulse while the each of the remaining N sequences (PN1,PN2, . . . ,PNN) corresponds to the appropriate chan

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Papp, Levente, Boudewijn van Leeuwen, Péter Szilassi, et al. "Monitoring Invasive Plant Species Using Hyperspectral Remote Sensing Data." Land 10, no. 1 (2021): 29. http://dx.doi.org/10.3390/land10010029.

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The species richness and biodiversity of vegetation in Hungary are increasingly threatened by invasive plant species brought in from other continents and foreign ecosystems. These invasive plant species have spread aggressively in the natural and semi-natural habitats of Europe. Common milkweed (Asclepias syriaca) is one of the species that pose the greatest ecological menace. Therefore, the primary purpose of the present study is to map and monitor the spread of common milkweed, the most common invasive plant species in Europe. Furthermore, the possibilities to detect and validate this specia

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Dvořák, P., J. Müllerová, T. Bartaloš, and J. Brůna. "UNMANNED AERIAL VEHICLES FOR ALIEN PLANT SPECIES DETECTION AND MONITORING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-1/W4 (August 26, 2015): 83–90. http://dx.doi.org/10.5194/isprsarchives-xl-1-w4-83-2015.

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Invasive species spread rapidly and their eradication is difficult. New methods enabling fast and efficient monitoring are urgently needed for their successful control. Remote sensing can improve early detection of invading plants and make their management more efficient and less expensive. In an ongoing project in the Czech Republic, we aim at developing innovative methods of mapping invasive plant species (semi-automatic detection algorithms) by using purposely designed unmanned aircraft (UAV). We examine possibilities for detection of two tree and two herb invasive species. Our aim is to es

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Bogdanov, Vladimir, Aleksey Osipov, Vitaly Garmanov, et al. "Problems and monitoring the spread of the ecologically dangerous plant Heracleum Sosnowskyi in urbanized areas and methods to combat it." E3S Web of Conferences 258 (2021): 08028. http://dx.doi.org/10.1051/e3sconf/202125808028.

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The article contains information on the breeding of Heracleum Sosnowskyi for cultivation as a forage crop in the post-Soviet period. Information about the ecological danger of the spread of this plant is given. Its juice contains furocoumarins, which, when exposed to human skin under the influence of ultraviolet rays, cause serious burns on the surface of the body. The article presents materials testifying to the increased adaptability of the Heracleum Sosnowskyi to the habitat conditions and its high fertility. The spread of Heracleum Sosnowskyi in urban areas (in parks, playgrounds on undeve

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Havryliuk, Olesia, Vira Hovorukha, Iryna Bida, et al. "Bioremediation of Copper- and Chromium-Contaminated Soils Using Agrostis capillaris L., Festuca pratensis Huds., and Poa pratensis L. Mixture of Lawn Grasses." Land 11, no. 5 (2022): 623. http://dx.doi.org/10.3390/land11050623.

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Environmental pollution by toxic metals is a common ecological problem. Chromium and copper compounds released into the environment as a result of human-made stress pose a serious threat to living organisms. Phytoremediation is a promising method of toxic metals removal from contaminated sites. The concentration of metals in grass biomass—in the roots and aerial parts—was determined by X-ray fluorescence analysis. The estimation of numbers of microorganisms was conducted by a tenfold dilution and spread-plating method. It was shown that lawn grass accumulated from 69.1 ± 13.2 to 497.7 ± 74.1 m

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Rajendrasozhan, Saravanan, Hani El Moll, Mejdi Snoussi, et al. "Phytochemical Screening and Antimicrobial Activity of Various Extracts of Aerial Parts of Rhanterium epapposum." Processes 9, no. 8 (2021): 1351. http://dx.doi.org/10.3390/pr9081351.

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Rhanterium epapposum, native to the Arabian Peninsula, is traditionally used to cure skin infections. The objective is to screen the phytochemical content and antimicrobial activity of aqueous, methanol and 80% methanol extracts of aerial parts of R. epapposum. The phytochemical screening of aqueous, methanolic, and 80% methanol extracts of R. epapposum was conducted using gas chromatographymass spectrometry. The antimicrobial activities of the extracts were assessed by well diffusion and microdilution methods. Qualitative phytochemical analysis revealed the presence of 2-methoxy-4-vinylphenol

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Долгих, В. С. "ОСНОВНІ ПОЛОЖЕННЯ КОНЦЕПЦІЇ СТВОРЕННЯ БЕЗПІЛОТНОЇ АВІАЦІЙНОЇ ТРАНСПОРТНОЇ СИСТЕМИ". Open Information and Computer Integrated Technologies, № 94 (9 лютого 2022): 40–49. http://dx.doi.org/10.32620/oikit.2021.94.04.

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The use of unmanned aerial vehicles is at an early stage, which is characterized by a significant level of development of unmanned aerial vehicles and their elements, as well as the lack of grounds for the use of unmanned aerial vehicles in real technological processes. The resolution of this contradiction requires the solution of various problems of a conceptual, technical, technological, methodological, organizational, legal and regulatory nature.The use of an unmanned aviation transport system helps to avoid the traditional mistakes that arise during the manned use of aviation technology, e

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Schenkel, Jared, Paul Taele, Daniel Goldberg, Jennifer Horney, and Tracy Hammond. "Identifying Potential Mosquito Breeding Grounds: Assessing the Efficiency of UAV Technology in Public Health." Robotics 9, no. 4 (2020): 91. http://dx.doi.org/10.3390/robotics9040091.

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Human ecology has played an essential role in the spread of mosquito-borne diseases. With standing water as a significant factor contributing to mosquito breeding, artificial containers disposed of as trash—which are capable of holding standing water—provide suitable environments for mosquito larvae to develop. The development of these larvae further contributes to the possibility for local transmission of mosquito-borne diseases in urban areas such as Zika virus. One potential solution to address this issue involves leveraging unmanned aerial vehicles that are already systematically becoming

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