Готові списки джерел за темами / Terrain types

Добірка наукової літератури з теми "Terrain types"

Автор: Grafiati
Опубліковано: 19 червня 2021
Оновлено: 1 лютого 2022

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Terrain types".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Зміст

  1. Статті в журналах
  2. Дисертації
  3. Книги
  4. Частини книг
  5. Тези доповідей конференцій
  6. Звіти організацій

Статті в журналах з теми "Terrain types":

1

Frade, Miguel, F. Fernandez de Vega, and Carlos Cotta. "Breeding Terrains with Genetic Terrain Programming: The Evolution of Terrain Generators." International Journal of Computer Games Technology 2009 (2009): 1–13. http://dx.doi.org/10.1155/2009/125714.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Although a number of terrain generation techniques have been proposed during the last few years, all of them have some key constraints. Modelling techniques depend highly upon designer's skills, time, and effort to obtain acceptable results, and cannot be used to automatically generate terrains. The simpler methods allow only a narrow variety of terrain types and offer little control on the outcome terrain. The Genetic Terrain Programming technique, based on evolutionary design with Genetic Programming, allows designers to evolve terrains according to their aesthetic feelings or desired features. This technique evolves Terrain Programmes (TPs) that are capable of generating a family of terrains—different terrains that consistently present the same morphological characteristics. This paper presents a study about the persistence of morphological characteristics of terrains generated with different resolutions by a given TP. Results show that it is possible to use low resolutions during the evolutionary phase without compromising the outcome, and that terrain macrofeatures are scale invariant.
2

Weller, G., and G. Wendler. "Energy Budgets Over Various Types of Terrain in Polar Regions." Annals of Glaciology 14 (1990): 311–14. http://dx.doi.org/10.1017/s0260305500008818.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
This paper summarizes typical energy-balance data for a variety of polar terrain types, to aid in a better understanding of climate and climate change. Terrain types examined include closed boreal forests, open woodlands, tundra, the pack ice of the Arctic Ocean, glaciers and large ice sheets. For each of these terrains energy-balance-related parameters, including albedo, surface roughness, and thermal diffusivity of the subsurface and their seasonal variations are considered. Components of the surface energy balance, and particularly the net radiation or radiation balance, are presented on a seasonal basis. Net radiation is shown to be a poor indicator of climate, if used as the sole parameter, contradicting earlier conclusions by some climatologists. Large differences are shown between the energy balances of the various terrains in summer, with the boreal forest and the tundra acting as major heat sources for the surrounding terrains, and the glaciers acting as major heat sinks. In winter, thin pack ice is the major source of heat energy. These factors not only affect the regional climates of the Arctic, but influence global climate through feedback processes.
3

Weller, G., and G. Wendler. "Energy Budgets Over Various Types of Terrain in Polar Regions." Annals of Glaciology 14 (1990): 311–14. http://dx.doi.org/10.3189/s0260305500008818.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
This paper summarizes typical energy-balance data for a variety of polar terrain types, to aid in a better understanding of climate and climate change. Terrain types examined include closed boreal forests, open woodlands, tundra, the pack ice of the Arctic Ocean, glaciers and large ice sheets. For each of these terrains energy-balance-related parameters, including albedo, surface roughness, and thermal diffusivity of the subsurface and their seasonal variations are considered. Components of the surface energy balance, and particularly the net radiation or radiation balance, are presented on a seasonal basis. Net radiation is shown to be a poor indicator of climate, if used as the sole parameter, contradicting earlier conclusions by some climatologists. Large differences are shown between the energy balances of the various terrains in summer, with the boreal forest and the tundra acting as major heat sources for the surrounding terrains, and the glaciers acting as major heat sinks. In winter, thin pack ice is the major source of heat energy. These factors not only affect the regional climates of the Arctic, but influence global climate through feedback processes.
4

Murchie, Scott L., James W. Head, Paul Helfenstein, and Jeffrey B. Plescia. "Terrain types and local-scale stratigraphy of grooved terrain on Ganymede." Journal of Geophysical Research 91, B13 (1986): E222. http://dx.doi.org/10.1029/jb091ib13p0e222.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Reffay, Annie. "Types de karsts en terrain volcanique : revue bibliographique / Types of karst in volcanic terrains: a review." Géomorphologie : relief, processus, environnement 7, no. 2 (2001): 121–26. http://dx.doi.org/10.3406/morfo.2001.1095.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Huskić, Goran, Sebastian Buck, Matthieu Herrb, Simon Lacroix, and Andreas Zell. "High-speed path following control of skid-steered vehicles." International Journal of Robotics Research 38, no. 9 (July 2019): 1124–48. http://dx.doi.org/10.1177/0278364919859634.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
We present a robust control scheme for skid-steered vehicles that enables high-speed path following on challenging terrains. First, a kinematic model with experimentally identified parameters is constructed to describe the terrain-dependent motion of skid-steered vehicles. Using Lyapunov theory, a nonlinear control law is defined, guaranteeing the convergence of the vehicle to the path. To allow smooth and accurate motion at higher speeds, an additional linear velocity control scheme is proposed, which takes actuator saturation, path following error, and reachable curvatures into account. The combined solution is experimentally evaluated and compared against two state-of-the-art algorithms, by using two different robots on several different terrain types, at different speeds. A Robotnik Summit XL robot is tested on three different terrain types and two different paths at speeds up to [Formula: see text] m/s. A Segway RMP 440 robot is tested on three different terrain types and two different path types at speeds up to [Formula: see text] m/s.
7

Koroteev, Viktor A., Viktor M. Necheukhin, Artur A. Krasnobaev, and Elena N. Volchek. "Terrains of the main geodynamical types in the structures of Ural-Timan areal and the Eurasia North-Eastern segment." LITOSFERA, no. 6 (December 28, 2018): 779–96. http://dx.doi.org/10.24930/1681-9004-2018-18-6-779-796.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Subject of study. Different points of view on the concept of structures of the terrain type and their role in the addition of orogenic belts are considered. Materials and methods. We used our own research and analysis of the latest publications about the Ural-Timan region and the Pacific belt, on the territory of the Northeast segment of Eurasia, as well as currently known isotope radiometric data. It was used also the result of geophysical seismotectonic and paleomagnetic explorations. Results. It has been established that in the composition of the Ural-Timan structural area, along with the Proterozoic and Paleozoic associations of the orogenic belts and the Riphean sedimentary series of protrusions of the Russian Plate, structural formations that correspond to the terrain of the continental crust take part. They are the most characteristic for the Ural orogenic belt, which belongs to the group of epiokean-type belts, associated with the transformation of ocean basins with the active participation of accretion and collision processes. The parametric features of these terrains include the ancient age characteristics of terrain rocks, their position in the belt structure, as well as the presence of relics of subhorizontal layered structural elements. The discordant blocks of migmatites, gneisses and other metamorphic rocks of Precambrian age, which make up the terrains, was the basis for the introduction of the term “terranes of the ancient continental crust”. By connection with the source, exotic and endemic, and simple and complex terrains are distinguished by structure. The geodynamics of including terrains of the ancient continental crust into the structure of orogenic belts is associated with horizontal movements of fragments of the ancient lithosphere in oceanic paleobasins to the periphery of the Russian Plate and their localization in belt structures. The formation of these terrains in the structures of the orogenic belts is completed by the formation of the intra-terrain massifs of granitoids and belts of volcanic-intrusive series. Supporters of a different methodology, dominant among researchers of the Pacific Belt of the Northeast Segment of Eurasia, refer to terrains all the structural elements that perform orogenic belts, because they believe that they have undergone horizontal movements and are in allochtonous occurrence. Conclusions. It has been established that in different geological provinces the term terrain has its own characteristics. This was the basis for the selection of two geodynamic types of terrains.
8

Zhu, Yaguang, Chaoyu Jia, Chao Ma, and Qiong Liu. "SURF-BRISK–Based Image Infilling Method for Terrain Classification of a Legged Robot." Applied Sciences 9, no. 9 (April 29, 2019): 1779. http://dx.doi.org/10.3390/app9091779.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
In this study, we propose adaptive locomotion for an autonomous multilegged walking robot, an image infilling method for terrain classification based on a combination of speeded up robust features, and binary robust invariant scalable keypoints (SURF-BRISK). The terrain classifier is based on the bag-of-words (BoW) model and SURF-BRISK, both of which are fast and accurate. The image infilling method is used for identifying terrain with obstacles and mixed terrain; their features are magnified to help with recognition of different complex terrains. Local image infilling is used to improve low accuracy caused by obstacles and super-pixel image infilling is employed for mixed terrain. A series of experiments including classification of terrain with obstacles and mixed terrain were conducted and the obtained results show that the proposed method can accurately identify all terrain types and achieve adaptive locomotion.
9

Žák, Marek, Jaroslav Rozman, and František V. Zbořil. "Design and Control of 7-DOF Omni-directional Hexapod Robot." Open Computer Science 11, no. 1 (December 17, 2020): 80–89. http://dx.doi.org/10.1515/comp-2020-0189.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
AbstractLegged robots have great potential to travel across various types of terrain. Their many degrees of freedom enable them to navigate through difficult terrains, narrow spaces or various obstacles and they can move even after losing a leg. However, legged robots mostly move quite slowly. This paper deals with the design and construction of an omni-directional seven degrees of freedom hexapod (i.e., six-legged) robot, which is equipped with omnidirectional wheels (two degrees of freedom are used, one for turning the wheel and one for the wheel itself) usable on flat terrain to increase travel speed and an additional coxa joint that makes the robot more robust when climbing inclined terrains. This unique combination of omnidirectional wheels and additional coxa joint makes the robot not only much faster but also more robust in rough terrains and allows the robot to ride inclined terrains up to 40 degrees and remain statically stable in slopes up to 50 degrees. The robot is controlled by a terrain adaptive movement controller which adjusts the movement speed and the gait of the robot according to terrain conditions.
10

Price, Jonathan S., and John E. Fitzgibbon. "Groundwater storage – streamflow relations during winter in a subarctic wetland, Saskatchewan." Canadian Journal of Earth Sciences 24, no. 10 (October 1, 1987): 2074–81. http://dx.doi.org/10.1139/e87-196.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Wetland drainage systems are shown to be hydrologically active during winter. Water storage in various terrain types changed over the winter as a result of intrabasin transfers between terrain types, primarily from outlying mineral terrains to centrally located groundwater controlled wetlands, and due to winter streamflow. Mineral terrain and bog lost 97 and 25 mm of water, respectively, whereas fens gained 28–51 mm. A water balance indicated that mineral terrain yielded almost twice as much water as was released as streamflow, and that much of this excess was being stored in the fens where groundwater seepage at the surface resulted in icings. Bogs had little ability to sustain winter streamflow. Diminishing streamflow in early winter coincided with freezing of the surface layers of peat, which normally transmit most of the water. However, streamflow was maintained throughout winter by water transmitted through the fens.
Більше джерел
Також вас можуть зацікавити розширені добірки на тему "Terrain types" для конкретних типів джерел:
Статті в журналах Дисертації Книги

Дисертації з теми "Terrain types":

1

Grousset, Isabelle. "Optimisation de trajectoires de véhicule sur tous types de terrain." Bordeaux 1, 1996. http://www.theses.fr/1996BOR10580.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
La trajectoire optimale d'un vehicule sur un terrain quelconque est determinee en resolvant un modele d'hamilton jacobi, avec vitesses non isotropes. La methode construit des courbes isovaleurs en fonction d'un critere d'optimisation operationnel, local, hybride (temps/consommation). Ces courbes sont solutions d'un systeme hyperbolique degenere que l'on resout grace a des schemas originaux (volumes finis, schemas compacts). Les applications realisees a l'aide d'un code numerique nouveau sont tres generales: sol montagneux, couplage avec le reseau routier, obstacles, cibles multiples ou en mouvement, robot, etc
2

Hofmeyr, Melanie Kemp. "Modified simplification of HDM-4 methodology for the calculation of vehicle operating cost to incorporate terrain and expanded to all vehicle types for use in the Western Cape context F HDM-4 METHODOLOGY FOR THE CALCULATION OF VEHICLE OPERATING COST TO INCORPORATE TERRAIN AND EXPANDED TO ALL VEHICLE TYPES FOR USE IN THE WESTERN CAPE CONTEXT." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96824.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Thesis (MSc)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: INTRODUCTION The Western Cape Government (WCG) uses Vehicle Operating Cost (VOC) as part of their Road Management System since 1992. VOC is used in the process of prioritisation of maintenance projects as well as for the identification of economically viable maintenance strategies and is thus an integral part of the system. In 2001 changes to the VOC calculation methodology in the system to Highway Development and Management (HDM-4) system methodology occurred. The reasons were twofold – to bring the calculation method in line with world trends and due to lack of updated cost factors used in the previous methodology. In October 2001 a model was implemented with riding quality (IRI) as independent variable. This model was partly based on regression table data. As no geometric/topography data, defined as Terrain data, was available at this stage, Terrain was ignored. In 2006 WCG Systems were updated with Global Positioning System (GPS) data and a process to classify or categorise Terrain was initiated, thus providing the opportunity to include Terrain. As part of the redevelopment to include Terrain, it was decided to re-evaluate the vehicle fleet. METHODOLOGY Various alternative methods to develop the Modified Simplification equations were available and evaluated, e.g. regression or direct mathematical substitution. HDM-4 requires the input of Vehicle Type dependent cost parameters that is based on real vehicles. The WCG required that changes to these dependent parameters is feasible, so that they can be updated periodically. A set of equations therefore needed to be developed, allowing the input of Vehicle Type dependent parameters and the subsequent calculation of VOC with riding quality (IRI) as independent variable. This renders the use of regression analysis untenable. Composition of the vehicle fleet on each road section is required to utilise HDM-4 for analyses. In order to simplify calculations, different traffic strata was defined, i.e. Business, Commuter, Rural and General. In the evaluation of the Vehicle it is this strata and data from permanent counting stations that is used to compile a Vehicle fleet. MODEL DEVELOPMENT The Modified Simplification to include Terrain results in 48 combinations of Vehicle Type, Surface Type and Terrain Type for the basic equation of VOC. VOC = TCav + PARTSCOST + LABOURCOST +DEPCSTav ( )´ Length of road segment 1000 +(FuelCostav +OilCostav )´ Length of road segment av TC -Tyre Cost PARTSCOST -Parts Cost LABOURCOST - Labour Cost av DEPCST - Depreciation Cost av FuelCost -Fuel Cost av OilCost - Oil Cost The variables in VOC are defined by a couple of equations. For explanatory purposes a numeric example is presented. CONCLUSION AND RECOMMENDATION The implementation of this Modified Simplification has assisted not only the WCG, but also other entities, that also use the VOC (published annually) based on these principles. Interested parties have the option to include Terrain in their implementation. Caution should be taken when using the Modified Simplification, as it is important that the principles used to simplify HDM-4 apply to the implementation and the business rules of the Management system of the user. The current development will not require a redevelopment due to any vehicle fleet change in future as the decision to simplify all defined Vehicle Types in HDM-4 allows the new fleet to be updated. Recommendation for further research and development include: • Standalone function that is already considered by the WCG • Investigating Published Vehicle data • Economic vehicle data for use in specific applications
AFRIKAANSE OPSOMMING: INLEIDING Sedert 1992 gebruik die Wes-Kaapse Regering (WCG) voertuiggebruikskoste (VOC) as deel van hul Plaveisel Bestuurstelsels. VOC word gebruik in die proses van prioritisering van die instandhoudingprojekte sowel as vir die identifisering van ekonomies-vatbare instandhouding-strategieë en is dus 'n integrale deel van die stelsel. In 2001 is daar besluit om oor te skakel na die berekeningsmetode van Highway Development and Management (HDM-4). Die redes was tweeledig – om die berekeningsmetode in lyn met die wêreld tendense te bring; en as gevolg van 'n gebrek aan opgedateerde koste-faktore in die voorheen-gebruikte metode. In Oktober 2001 is 'n VOC-model, met rygehalte (IRI) as onafhanklike veranderlike geïmplementeer. Hierdie model was gedeeltelik gebaseer op regressie tabel data. Aangesien daar geen geometriese/topografiese data (gedefiniëer as terreindata) beskikbaar was nie, is die terrein geïgnoreer. In 2006 is WCG Stelsels opgedateer met Globale Positionering Stelsel (GPS) data en 'n proses om terrein te klassifiseer is van stapel gestuur. Deur die verandering in beskikbare data, is die geleentheid om terrein in te sluit in die VOC model geskep. As deel van die insluiting van herontwikkeling om terrein in te sluit, is daar besluit om die voertuigvloot te her-evalueer. METODOLOGIE Verskeie alternatiewe metodes om die Gewysigde Vereenvoudiging-vergelykings te ontwikkel was beskikbaar en is geëvalueer, bv. regressie of direkte wiskundige vervanging en vereenvoudiging. HDM-4 se voertuigafhanklike koste-parameters is op werklike voertuie gebaseer. Die WCG het vereis dat hierdie afhanklike parameters veranderbaar moet wees, sodat hulle dit van tyd tot tyd kan opdateer. Dit was dus nodig om 'n stel vergelykings te ontwikkel met die tipe voertuigkosteafhanklike parameters as insette. Verder moes alle vergelykings weer in terme van rygehalte wees. Dit maak die gebruik van regressie-analise ononderhoubaar. Samestelling van die voertuigvloot op elke padseksie is 'n vereiste om HDM-4 aan te wend vir ontledingsdoeleindes. Ten einde berekeninge te vereenvoudig is verskillende verkeerstrata gedefinieer, naamlik Besigheid, Pendel, Landelik en Algemeen. In die evaluering van die Voertuig is dit hierdie strata en data uit permanente telstasies wat gebruik word om 'n voertuigvloot saam te stel. MODELONTWIKKELING Die Gemodifiseerde Vereenvoudiging, insluitend terrein, het 48 kombinasies van tipe voertuig, oppervlak en terrein vir die basiese vergelyking van VOC: VOC = TCav + PARTSCOST + LABOURCOST +DEPCSTav ( )´ Length of road segment 1000 +(FuelCostav +OilCostav )´ Length of road segment TCav - Bandkoste; PARTSCOST - Onderdele-koste; LABOURCOST - Arbeidskoste; av FuelCost - Brandstofkoste; av DEPCST - Waardeverminderingskoste; av OilCost - Oliekoste Die veranderlikes in VOC word gedefinieer deur 'n paar vergelykings. Vir verduidelikende doeleindes word 'n numeriese voorbeeld ingesluit. GEVOLGTREKKING EN AANBEVELING Die implementering van hierdie Gewysigde Vereenvoudiging het nie net die WCG nie, maar ook ander entiteite wat ook die VOC (jaarliks gepubliseer) gebruik, bygestaan. Belangstellendes het die opsie om die terrein in hul implementering in te sluit. Dit is belangrik om ag te slaan op die beginsels wat gebruik is om HDM-4 te vereenvoudig tesame met die besigheidsreëls van die Gewysigde Vereenvoudiging, indien dit gebruik word. Die huidige model vereis nie 'n herontwikkeling as gevolg van enige voertuigvloot verandering in die toekoms nie. As gevolg van die besluit om alle gedefinieerde tipes voertuig te vereenvoudig, kan die voertuigvloot keuse net in die stelsel opgedateer word. Aanbeveling vir verdere navorsing en ontwikkeling sluit in: • Alleenstaande funksie wat reeds deur die WCG beskou word • Ondersoek Gepubliseerde Voertuig data • Gebruik van Ekonomiese voertuigdata vir sekere toepassings
3

Rafalimanana, Halitiana Joséa. "Evaluation des effets d'insecticides sur deux types d'Hyménoptères auxilliaires des cultures, l'abeille domestique (Apis mellifera L.) et des parasitoïdes de pucerons : études de terrain à Madagascar et de laboratoire en France." Phd thesis, INAPG (AgroParisTech), 2003. http://tel.archives-ouvertes.fr/tel-00005703.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Les abeilles et les parasitoïdes de pucerons courent le risque d'exposition à des insecticides qui ne leur sont pas destinés. Nos objectifs consistent à évaluer ce risque sur le terrain et à contribuer à mettre au point des tests de toxicité létale et sublétale en laboratoire pour les deux types d'insectes.
A Madagascar, nous avons mené une enquête pour déterminer l'impact de pratiques paysannes en matière de protection de cultures d'agrumes sur les abeilles, et une expérimentation en parcelle de choux pour évaluer les effets de traitements insecticides sur les Hyménoptères parasites de pucerons. En France, nous avons déterminé en laboratoire les toxicités aiguës de la deltaméthrine, de la lambda cyhalothrine, du chlorpyriphos éthyle et du pyrimicarbe, pour les abeilles et le parasitoïde de pucerons, Aphidius ervi. Nous avons analysé, chez l'abeille, certaines causes de variabilité des doses létales à 50%. Nous avons également déterminé les effets d'insecticides sur le comportement d'orientation olfactive en olfactomètre chez l'abeille et A. ervi.
A Madagascar, le traitement pendant la floraison existe et les apiculteurs constatent des effets négatifs sur leurs ruches. L'expérimentation en parcelle de chou montre que le traitement insecticide contribue à retarder l'action des Hyménoptères parasites de pucerons.
En laboratoire, la toxicité varie en fonction du mode de pénétration et de la nature des matières actives. Chez l'abeille, les toxicités par ingestion collective et individuelle ne sont pas toujours comparables. L'importance du phénomène de trophallaxie dans cette différence a été précisée. Ainsi, la valeur de DL50 exprimée en ng/abeille dépend des conditions expérimentales. Les abeilles et A. ervi ayant survécu aux traitements insecticides et testés en olfactomètre, ne montrent pas ou peu de changement de comportement d'orientation vis-à-vis de l'odeur utilisée. Par contre, les abeilles recevant des DL20 et DL50 de deltaméthrine ont une capacité locomotrice réduite. Cette perturbation pourrait avoir des effets non négligeables sur les insectes auxiliaires dans un environnement pollué par les insecticides
4

Bafalimanana, Halitiana Josea. "Evaluation des effets d'insecticides sur deux types d'Hyménoptères auxiliaires des cultures, l'abeille domestique (Apis mellifera L. ) et des parasitoi͏̈des de pucerons : études de terrain à Madagascar et de laboratoire en France." Paris, Institut national d'agronomie de Paris Grignon, 2003. http://www.theses.fr/2003INAP0001.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Les abeilles et les parasitoi͏̈des de pucerons courent le risque d'exposition à des insecticides qui ne leur sont pas destinés. Nos objectifs consistent à évaluer ce risque sur le terrain et à contribuer à mettre au point des tests de toxicité létale et sublétale en laboratoire pour les deux types d'insectes. A Madagascar, nous avons mené une enquête pour déterminer l'impact de pratiques paysannes en matière de protection de cultures d'agrumes sur les abeilles, et une expérimentation en parcelle de choux pour évaluer les effets de traitements insecticides sur les Hyménoptères parasites de pucerons. En France, nous avons déterminé en laboratoire les toxicités aigue͏̈s de la deltaméthrine, de la lambda cyhalothrine, du chlorpyriphos éthyle et du pyrimicarbe, pour les abeilles et le parasitoi͏̈de de pucerons, Aphidius ervi. Nous avons analysé, chez l'abeille, certaines causes de variabilité des doses létales à 50%. Nous avons également déterminé les effets d'insecticides sur le comportement d'orientation olfactive en olfactomètre chez l'abeille et A. Ervi. A Madagascar, le traitement pendant la floraison existe et les apiculteurs constatent des effets négatifs sur leurs ruches. L'expérimentation en parcelle de chou montre que le traitement insecticide contribue à retarder l'action des Hyménoptères parasites de pucerons. En laboratoire, la toxicité varie en fonction du mode de pénétration et de la nature des matières actives. Chez l'abeille, les toxicités par ingestion collective et individuelle ne sont pas toujours comparables. L'importance du phénomène de trophallaxie dans cette différence a été précisée. Ainsi, la valeur de DL50 exprimée en ng/abeille dépend des conditions expérimentales. Les abeilles et A. Ervi ayant survécu aux traitements insecticides et testés en olfactomètre, ne montrent pas ou peu de changement de comportement d'orientation vis-à-vis de l'odeur utilisée. Par contre, les abeilles recevant des DL20 et DL50 de deltaméthrine ont une capacité locomotrice réduite. Cette perturbation pourrait avoir des effets non négligeables sur les insectes auxiliaires dans un environnement pollué par les insecticides
Honeybees and aphid parasitoids may suffer from side effects of insecticides during their beneficial activity. Our objective was the risk assessment of pesticides towards these non target insects in the field and a contribution to the setting up of lethal and sublethal toxicity tests in the laboratory. In Madagascar, we conducted an investigation to define the impact of crop protection farmers' practices on honeybees, and we conducted an experimentation to estimate the effects of a treatment on aphid parasitoids. In France, we determined the acute toxicity of deltamethrin, lambda cyhalothrin, chlorpyrifos ethyl and pirimicarb, on the honeybee and on an aphid parasitoid, Aphidius ervi. We analyzed some parameters responsible for the variability of lethal dose 50 (LD50) values. We also investigated the effects of the insecticides on orientation responses of the honeybee and A. Ervi, using a common behavioral test, the four-armed olfactometer. In Madagascar, insecticide treatment can occur during blooming and the farmers have observed negative effects on honeybee colonies. With regard to Hymenopterous parasitoids, we found out that the insecticide treatment contributes to delay their action in experimental cabbage field plots. In laboratory conditions, the toxicity varies according to the exposure route and to the active ingredient. The honeybee oral toxicity differed between collective and individual administration. The role of trophallactic interactions in the distribution of the active ingredient was evaluated. Thus, value of LD50 expressed in ng/bees varies according to the experimental conditions. The honeybees and A. Ervi surviving the insecticide treatments showed no or little effect in their attraction responses in the four-armed olfactometer. On the other hand, in honeybees, LD20 and LD50 of deltamethrin decreased their capability to move. These perturbations might have an important effect on beneficials insects in an environment contaminated by pesticides
5

Karlsson, Henrik. "Kvalitetsundersökning och jämförelse av Laserdata NH och Laserdata Skog : Olika terrängtypers inverkan på punktmolnets återgivning av markytan." Thesis, Karlstads universitet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84568.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Flygburen laserskanning är en effektiv metod för insamling av höjddata över stora områden och används därför frekvent som underlag till digitala höjdmodeller, både på nationell och regional nivå (Wehr & Lohr 1999). Fördelen med insamlingsmetoden är att de utsända laserpulserna reflekteras på både markytan och objekten ovan mark, exempelvis vegetation, byggnader och liknande. På så vis genereras ett tredimensionellt punktmoln från vilket ytterligare produkter kan genereras. Den uppskattade eller uppmätta kvaliteten hos LiDAR-data gäller generellt för hela skanningsområdet. Men det kan vara av intresse att utföra en mer djupgående analys av kvaliteten för att se hur den skiljer sig mellan olika terrängtyper. På uppdrag av Arvika kommun ska en kvalitetskontroll av Lantmäteriets andra rikstäckande laserskanning ”Laserdata Skog” utföras. I dagsläget arbetar man med Laserdata NH, syftet med studien är således att ge Arvika kommun en mer nyanserad uppfattning av kvaliteten hos Laserdata Skog så att framtida arbeten kan ske på ett tillförlitligt sätt med en djupare förståelse kring datat. En jämförelse med Lantmäteriets första rikstäckande laserskanning ”Laserdata NH” kommer även utföras. Jämförelsen mellan de två laserskanningarna sker främst av ett teoretiskt intresse för att utreda hur stor skillnaden är mellan dem, framtida arbeten med laserdata kommer troligtvis att ske med den nya ”Laserdata Skog”.   För att utföra studien tillämpas den tekniska specifikationen SIS-TS 21144:2016 ”Byggmätning – Specifikationer vid framställning och kontroll av digitala markmodeller”. Inmätning av referensdata utfördes med både GNSS-utrustning och totalstation. De terrängtyper som har inkluderats i studien är: asfaltsyta, grusyta, lövskog, barrskog och gräsyta. För varje terrängtyp selekterades 2 provytor för att uppnå en god representation av de enskilda terrängtyperna. För att möjliggöra en koordinatjämförelse mellan laser- och referensdata så interpolerades punktmolnet till en TIN-yta. Resultatet visar att det uppstår differenser mellan Laserdata NH och Laserdata Skog för de statistiska mått som har beräknats. Laserdata NH erhåller förvånansvärt låga avvikelser. En övergripande trend är dock att Laserdata Skog har de lägre avvikelserna. Att fastställa orsakerna till dessa är dock svårt då det finns ett flertal faktorer som spelar in. Sammanfattningsvis erhåller Grusyta det lägsta RMSE-värdet (0,021 m) i Laserdata NH och i Laserdata Skog är det Asfaltsyta (0,017 m). Det högsta RMSE-värdet hittas i Barrskog för både Laserdata NH (0,198 m) och Skog (0,111 m).
Airborne laser scanning is an efficient method for collecting elevation data over a large area and is therefore frequently used as a basis for digital elevation models, both on a national and regional level (Wehr & Lohr 1999). The advantage of this data collection method is that the emitted laser pulses are reflected both on the ground surface as well as the objects above it, for example the vegetation, buildings or the like. In this way a three-dimensional point cloud can be created from which further products can be generated. The estimated or measured quality of LiDAR data generally applies for the entire scanning area. But it can be interesting to perform a more in-depth analysis of how the quality differs between different types of terrain.  At the request of Arvika municipality a quality survey of Lantmäteriet’s second nationwide laser scanning “Laserdata Skog” will be performed. Work is currently being performed using Laserdata NH, the purpose of this study is thus to give Arvika kommun a more nuanced perception of Laserdata Skog’s quality so that future work can be done in a more reliable way with a deeper knowledge about the data at hand. A comparison between Lantmäteriet’s first nationwide laser scanning “Laserdata NH” will also be performed. The comparison between these two is primarily out of a theoretical interest to examine how the quality differs between them. Future laserdata work will probably be executed using the newer product “Laserdata Skog”. The technical specification SIS-TS 21144:2016 ”Construction measurements – Specifications of production and control of digital terrain models” was applied in the study. Both GNSS-equipment and total station where used in order to collect reference data. The included terrain types are: asphalt, gravel, deciduous forest, coniferous forest and grass. Two areas of interest have been selected for each type of terrain in order to achieve a good representation of each terrain type. In order to perform a coordinate comparison between the laser- and reference data the point cloud from the laserdata was interpolated to a TIN-surface. The results show that there are quality differences between Laserdata NH and Laserdata Skog. Laserdata NH obtains remarkably low deviations. The overall trend is however that Laserdata Skog acquires the lower deviations of the two. Determining the causes of this is difficult, as there are several factors that come in to play. In summary the Gravel terrain type obtains the lowest RMSE-value (0,021 m) for Laserdata NH. The terrain type with the lowest RMSE-value for Laserdata Skog is Asphalt (0,017 m). The highest RMSE-values are found in Coniferous forest for both Laserdata NH (0,198 m) and Laserdata Skog (0,111 m).
6

Boculo, Irina. "Lietuvos kaimo vietovių įvaizdžio formavimo scenarijai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110615_114858-63735.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Magistro studijų baigiamasis darbas, 51 puslapis, 13 paveikslų, 10 lentelių, 47 literatūros šaltiniai, 2 priedai, lietuvių kalba. PRASMINIAI ŽODŽIAI: kaimo vietovė, vietovės įvaizdis, kaimo vietovės įvaizdis, vietovės įvaizdžio formavimas, vietovės įvaizdžio tipai, vietovės įvaizdžio formavimo vertinimo kriterijai. Tyrimo objektas – Lietuvos kaimo vietovių įvaizdis. Tyrimo tikslas – parengti moksliniais tyrimais pagrįstus Lietuvos kaimo vietovių įvaizdžio formavimo scenarijus. Tyrimo uždaviniai: 1. Išanalizuoti vietovės įvaizdžio formavimo teorinius dėsningumus. 2. Identifikuoti kaimo vietovės įvaizdį formuojančius veikėjus. 3. Atlikti kaimo vietovių įvaizdžio formavimo empirinį tyrimą. 4. Sudaryti Lietuvos kaimo vietovių įvaizdžio formavimo scenarijus. Tyrimo metodai: mokslinės literatūros, dokumentų analizė, kokybinis vertinimas, loginės analizės ir modeliavimo metodas, sintezė, palyginimas, indukcija, dedukcija, grafinis vaizdavimas. Tyrimo rezultatai: Pirmoje darbo dalyje atlikta vietovės įvaizdžio formavimo teorinių dėsningumų analizė ir nustatyta kad kaimo vietovės įvaizdis yra asmens vertinimų kaimo vietovės atžvilgiu ir yra komunikacinio proceso rezultatas. Kaimo vietovės įvaizdžio formavimas gali būti tiesioginis ir netiesioginis. Antroje darbo dalyje, remiantis empiriniu tyrimu ir mokslinės literatūros analize, nustatyti kaimo vietovės įvaizdžio formavimo vertinimo kriterijai ir balai, tinkami analizuoti kaimo vietovės įvaizdžio formavimo priemones, vykdyti... [toliau žr. visą tekstą]
Final work of University Postgraduate Studies, 51 pages, 13 figures, 10 tables, 47 references, 2 appendixes, in Lithuanian. KEY WORDS: countryside, image of terrain, image of countryside, formation of countryside image, types of terrain images, evaluation criteria of terrain image formation. Research object – image of Lithuanian countryside. Research aim – to prepare research-based image formation scenarios for Lithuanian countryside. Objectives: 1. To analyze the theoretical concepts of a terrain image formation; 2. To identify the actors of countryside image formation; 3. To conduct empirical analysis of countryside image formation; 4. To prepare scenarios of Lithuanian countryside image formation. Research methods: analysis and synthesis of literature and documents, qualitative evaluation, comparative analysis, logical analysis and modeling, synthesis, comparison, induction, deduction, graphical representation. Research results: The first part analyzes theoretical concepts of terrain image formation. Image of countryside is the result personal feelings and communication process. Image formation of countryside can be direct and indirect. The second part, on the basis of theoretical analysis and empirical research, establishes criteria and points of countryside image formation evaluation, analysis of countryside image formation tools and control. The third part, on the basis of theoretical analysis and empirical research, proposes four scenarios of Lithuanian... [to full text]
7

Caurin, Glauco Augusto de Paula. "Control of walking robots on natural terrain /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10898.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Thüer, Thomas. "Mobility evaluation of wheeled all-terrain robots : metrics and application /." Zürich : ETH, 2009. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18160.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Buzzi, Matteo. "Challenges in operational numerical weather prediction at high resolution in complex terrain /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17714.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Eidenbenz, Stephan Eidenbenz Stephan Johannes. "(In-)Approximability of visibility problems on polygons and terrains /." [S.l.] : [s.n.], 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13683.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Книги з теми "Terrain types":

1

Kesteren, A. R. Van. Air photo interpretation of Damman forest types on calcareous terrain in western Newfoundland. [St. John's, Nfld.]: Forestry Canada, Newfoundland and Labrador Region, 1992.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Odom, Richard H. Using digital terrain modeling to predict ecological types in the Balsam Mountains of western North Carolina. Asheville, N.C: U.S. Dept. of Agriculture, Forest Service, Southern Research Station, 2000.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

HIGGINS, Jack. Terrain dangereux: Roman. London: Signet, 1995.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Laveine, Jean-Pierre. Guide paléobotanique dans le terrain houiller sarro-lorrain. [France]: Impr. des houillères du bassin de Lorraine, 1989.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Kwak, Se-Hung. Rule-based motion coordination for the Adaptive Suspension Vehicle on ternary-type terrain. Monterey, Calif: Naval Postgraduate School, 1990.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Blakeney, Jay. Terrace In The Sun. South Yarmouth, Ma: Curley, 1990.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Barnard, Robert. The killings on Jubilee Terrace. Waterville, Me: Wheeler Pub., 2009.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Midcontinent Strategic and Critical Minerals Project (U.S.). Workshop. The midcontinent of the United States: Permissive terrane for an Olympic dam-type deposit? [Washington: U.S. G.P.O., 1990.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Barnard, Robert. The killings on Jubilee Terrace: A novel of suspense. New York: Scribner, 2009.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Max Brown, V., Eva B. Kisvarsanyl, Richard D. Hagni, and Tommy B. Thompson, eds. “Olympic Dam-Type” Deposits and Geology of Middle Proterozoic Rocks in the St. Francois Mountains Terrane, Missouri. Ontario, Canada: Society of Economic Geologists, 1989. http://dx.doi.org/10.5382/gb.04.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Частини книг з теми "Terrain types":

1

Hewitt, Kenneth. "Karakoram Glaciers: Types and Terrain." In Advances in Asian Human-Environmental Research, 61–86. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6311-1_3.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Bhattacharya, Kakali. "Unit 2: Terrain and Types of Qualitative Research." In Fundamentals of Qualitative Research, 18–34. New York : Routledge, 2017.: Routledge, 2017. http://dx.doi.org/10.4324/9781315231747-2.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Zaleshina, Margarita, and Alexander Zaleshin. "Sustainable Patterns of Pigeon Flights Over Different Types of Terrain." In Communications in Computer and Information Science, 832–39. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63820-7_95.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Herrnberger, Volker R. D., and Patrick Doria. "Assessment and Verification of Different Types of Dispersion Models in Complex Terrain." In Air Pollution Modeling and Its Application X, 549–57. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-1817-4_58.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Faigl, Jan, and Miloš Prágr. "On Unsupervised Learning of Traversal Cost and Terrain Types Identification Using Self-organizing Maps." In Artificial Neural Networks and Machine Learning – ICANN 2019: Theoretical Neural Computation, 654–68. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30487-4_50.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Van Grieken, René, J. Injuk, L. De Bock, and H. Van Malderen. "Study of Individual Particle Types and Heavy Metal Deposition for North Sea Aerosols using Micro and Trace Analysis Techniques." In Exchange and Transport of Air Pollutants over Complex Terrain and the Sea, 105–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-57252-4_13.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Bartoněk, Dalibor, Jiří Bureš, and Irena Opatřilová. "The Solution of Massive Tasks in GIS Exemplified by Determining Terrain Surface Types Above Gas Pipelines in the Czech Republic." In Lecture Notes in Geoinformation and Cartography, 95–104. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08180-9_8.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Gnes, Davide. "Chant Down the Walls: Exploring the Potential of Video Methods in the Study of Immigrant Politics and Social Movements." In IMISCOE Research Series, 253–73. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67608-7_14.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
AbstractIn this chapter I draw on my fieldwork experience in Los Angeles to discuss the potential of video for qualitative research on migration and political action. I focus specifically on three aspects: access to the field, research respondents and data; video and the study of micro-social interaction; video as a tool to generate new insights and data. I argue that video has facilitated, enriched and expanded my understanding of migrant political action in several ways, some of which were entirely unexpected at the beginning of this research. Within the field of migration studies, video appears particularly suitable to research the terrain of politics and culture, since it provides the means to study a key social aspect that is difficult to investigate in detail only with other types of methods: interaction. Hence, video as both a tool and a method proved a useful complement to interviews, artefacts and archive documentation.
9

Benson, Richard C., and Lynn B. Yuhr. "Types of Karst Features." In Site Characterization in Karst and Pseudokarst Terraines, 17–33. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-9924-9_3.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Schulz, M. "The North Sea Experiment 1991 (NOSE): A Lagrangian-type experiment." In Exchange and Transport of Air Pollutants over Complex Terrain and the Sea, 13–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-57252-4_3.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Terrain types":

1

Allen, James, Brent Shoffner, Fredrik O¨ijer, Moustafa El-Gindy, Mukesh Trivedi, and Inge Johansson. "Predictions of Tire-Terrain Interaction Using Finite Element Analysis Models." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34030.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Simplified Finite Element Analysis (FEA) truck tire models are developed and used to examine the interaction between the tire and various types of terrain. Soft terrain such as hard soil and dry sand is modeled using solid, elastic-plastic elements. The general trends of vertical and longitudinal forces and normal and shear stress distributions in the soft soil are compared with published data for preliminary validation. The cornering characteristics on both rigid and soft soil terrains are also predicted and compared. Additionally, a detailed FEA truck tire is introduced as the next phase of this work.
2

Stabek, Amber, Paul Watters, and Robert Layton. "The Seven Scam Types: Mapping the Terrain of Cybercrime." In 2010 Second Cybercrime and Trustworthy Computing Workshop (CTC). IEEE, 2010. http://dx.doi.org/10.1109/ctc.2010.14.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Wiratsin, Inon, Veerapong Suchaiporn, Pojchara Trainorapong, Jirachaipat Chaichinvara, Sakwaroon Rattanajitdamrong, and Narit Hnoohom. "Classification of Terrain Types in Unmanned Aerial Vehicle Images." In 2018 International Joint Symposium on Artificial Intelligence and Natural Language Processing (iSAI-NLP). IEEE, 2018. http://dx.doi.org/10.1109/isai-nlp.2018.8692953.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Chemistruck, Heather, and John B. Ferris. "Compact Models of Terrain Surfaces." In ASME 2010 Dynamic Systems and Control Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/dscc2010-4037.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Terrain topology is the principal source of vertical excitation to the vehicle system and must be accurately represented in order to correctly predict the vehicle response. It is desirable to evaluate vehicle models and tire models over a wide range of terrain types, but it is computationally impractical to simulate long distances of every terrain variation. This work seeks to study the terrain surface, rather than the terrain profile, to maximize the information available to the tire model (i.e. wheel path data). A method to decompose the terrain surface as a combination of deterministic and stochastic components is presented. If some, or all, of the components of the terrain surface are considered to be stochastic, then the sequence can be modeled as a stochastic process. These stochastic representations of terrain surfaces can then be implemented in tire and vehicle models to predict chassis loads.
5

Sullivan, Christopher, Elizabeth DeBartolo, and Kathleen Lamkin-Kennard. "A Wearable Gait Monitor and Terrain Prediction System." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14261.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
Nearly one million people in 2009 were discharged from the hospital with stroke as the primary diagnosis [1]. One of the many lasting side effects of a stroke can be foot drop, or an inability to dorsiflex the foot. In order to remedy this, many people wear an ankle-foot orthotic (AFO) post-stroke. Interviews with AFO users revealed that they frequently have difficulty walking on stairs and ramps, because the AFO limits the plantarflexion that is natural in navigating those ground types. An active AFO that adapts to changing ground terrain would provide a more natural gait pattern for these individuals, if it could be designed to respond appropriately to upcoming terrain. In order to respond to terrain, the device must first identify the terrain. This paper outlines a system [2] that simultaneously predicts the type of terrain a user is approaching as they walk, and captures information about that user’s walking activity. Such a system can be used as the control system for an active orthotic or prosthetic device. Additionally, this system can be used as a stand-alone gait and terrain monitor to aid in rehabilitation monitoring in between patient visits with a clinician.
6

Dallaire, Patrick, Krzysztof Walas, Philippe Giguere, and Brahim Chaib-draa. "Learning terrain types with the Pitman-Yor process mixtures of Gaussians for a legged robot." In 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2015. http://dx.doi.org/10.1109/iros.2015.7353859.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Vantsevich, Vladimir V., Dennis Murphy, Gianantonio Bortolin, Blair Farley, and Gabriel Judd. "Driveline Configuration and Terrain Effect on Slippage and Efficiency of a 6×6/6×4 Truck." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66358.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The power distribution between driving wheels has been shown to have a significant impact on vehicle energy efficiency, but there has only been limited research in this area. As shown in this paper, the wheel power distribution is largely dependent on the power dividing units (PDUs) which split/vector power between the driving wheels. The performance of a particular driveline system will also depend largely on the terrain conditions the vehicle encounters. This paper presents an analysis of PDU configurations in 6×6/6×4 terrain trucks. The vehicle efficiency is evaluated in a wide variety of typical operating conditions including varying surface types, speeds and accelerations, and slope conditions. An analytical method is presented which can be used to determine the tire circumferential forces and slippages. Finally, an analysis of the effects of the driveline configuration, terrain, and surface type on truck transportation efficiency is presented for three PDU combinations.
8

Nasrallah, Danielle Sami, Jorge Angeles, and Hannah Michalska. "Modeling of an Anti-Tilting Outdoor Mobile Robot." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-85098.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
This paper reports on the modeling of an anti-tilting outdoor mobile robot moving on an uneven terrain that is modeled as a warped, smooth surface. The dynamics has been derived using the natural orthogonal complement, and takes into account the terrain geometry, which has not been investigated before. The Euler-Rodrigues parameters have been chosen to describe the orientation of bodies in space because of their robustness. Simulation of the robot moving on distinct types of terrain are provided.
9

Oktug, Sema, Anar Khalilov, and Hakan Tezcan. "The effects of terrain types on 3D coverage under heterogeneous deployment strategies in Wireless Sensor Networks." In 2008 23rd International Symposium on Computer and Information Sciences (ISCIS). IEEE, 2008. http://dx.doi.org/10.1109/iscis.2008.4717947.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Martinez, J. M., A. Beaudoin, U. Wegmuller, and T. Strozzi. "Classification of land-cover and forest types using multidate ERS tandem data acquired over hilly terrain." In IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174). IEEE, 1998. http://dx.doi.org/10.1109/igarss.1998.703659.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

Звіти організацій з теми "Terrain types":

1

Ellefsen, Richard, and David Fordyce. Urban Terrain Building Types: Second Edition Public Releasable Version. Fort Belvoir, VA: Defense Technical Information Center, November 2012. http://dx.doi.org/10.21236/ada586279.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Hodgdon, Taylor, Anthony Fuentes, Jason Olivier, Brian Quinn, and Sally Shoop. Automated terrain classification for vehicle mobility in off-road conditions. Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40219.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The U.S. Army is increasingly interested in autonomous vehicle operations, including off-road autonomous ground maneuver. Unlike on-road, off-road terrain can vary drastically, especially with the effects of seasonality. As such, vehicles operating in off-road environments need to be in-formed about the changing terrain prior to departure or en route for successful maneuver to the mission end point. The purpose of this report is to assess machine learning algorithms used on various remotely sensed datasets to see which combinations are useful for identifying different terrain. The study collected data from several types of winter conditions by using both active and passive, satellite and vehicle-based sensor platforms and both supervised and unsupervised machine learning algorithms. To classify specific terrain types, supervised algorithms must be used in tandem with large training datasets, which are time consuming to create. However, unsupervised segmentation algorithms can be used to help label the training data. More work is required gathering training data to include a wider variety of terrain types. While classification is a good first step, more detailed information about the terrain properties will be needed for off-road autonomy.
3

Odom, Richard H., and W. Henry McNab. Using Digital Terrain Modeling to Predict Ecological Types in the Balsam Mountains of Western North Carolina. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station, 2000. http://dx.doi.org/10.2737/srs-rn-8.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Odom, Richard H., and W. Henry McNab. Using Digital Terrain Modeling to Predict Ecological Types in the Balsam Mountains of Western North Carolina. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station, 2000. http://dx.doi.org/10.2737/srs-rn-8.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Carpenter, Aren J., Meagan A. Thomas, and Kristen K. Cecala. Effects of Bait Type and Conspecific Attraction in Diamondback Terrapin (Malaclemys terrapin) Bycatch. Journal of Young Investigators, January 2020. http://dx.doi.org/10.22186/jyi.38.1.1-7.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Bodie, Mark, Michael Parker, Alexander Stott, and Bruce Elder. Snow-covered obstacles’ effect on vehicle mobility. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38839.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The Mobility in Complex Environments project used unmanned aerial systems (UAS) to identify obstacles and to provide path planning in forward operational locations. The UAS were equipped with remote-sensing devices, such as photogrammetry and lidar, to identify obstacles. The path-planning algorithms incorporated the detected obstacles to then identify the fastest and safest vehicle routes. Future algorithms should incorporate vehicle characteristics as each type of vehicle will perform differently over a given obstacle, resulting in distinctive optimal paths. This study explored the effect of snow-covered obstacles on dynamic vehicle response. Vehicle tests used an instrumented HMMWV (high mobility multipurpose wheeled vehicle) driven over obstacles with and without snow cover. Tests showed a 45% reduction in normal force variation and a 43% reduction in body acceleration associated with a 14.5 cm snow cover. To predict vehicle body acceleration and normal force response, we developed two quarter-car models: rigid terrain and deformable snow terrain quarter-car models. The simple quarter models provided reasonable agreement with the vehicle test data. We also used the models to analyze the effects of vehicle parameters, such as ground pressure, to understand the effect of snow cover on vehicle response.
7

Bjella, Kevin, Yuri Shur, Misha Kanevskiy, Paul Duvoy, Bruno Grunau, John Best, Stephen Bourne, and Rosa Affleck. Improving design methodologies and assessment tools for building on permafrost in a warming climate. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38879.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Анотація:
The U.S. Department of Defense (DoD) operates numerous Arctic and Subarctic installations, including Alaska. Changes to permafrost can threaten critical built infrastructure. It is critical to accurately characterize and compare site conditions in permafrost regions to enable the efficient, cost-effective design and construction of an infrastructure well suited to the permafrost environment and that meets DoD requirements. This report describes three research efforts to establish (1) field investigation approaches for ground ice detection and delineation, (2) methods and modeling for early warning detection of thawing permafrost under infrastructure, and (3) an outline of a decision support system that determines the most applicable foundation design for warming and degrading permafrost. Outcomes of these interrelated efforts address needs to improve construction of DoD mission critical infrastructure on Arctic and Subarctic permafrost terrains. Field investigation processes used systematic methodologies including borehole data and geophysical measurements to effectively characterize subsurface permafrost information. The Permafrost Foundation Decision Support System (PFFDSS) tool implements and logically links field survey information and foundation type assessments. The current version of PFFDSS is designed to be accessible to design-engineers of a broad range of experience, that will reduce the effort and cost, and improve the effectiveness of site assessment.
8

The Midcontinent of the United States; permissive terrane for an olympic dam-type deposit? US Geological Survey, 1991. http://dx.doi.org/10.3133/b1932.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

До бібліографії