Quadcopter Aggressive Maneuvers along Singular Configurations: An Energy-Quaternion Based Approach by Ayman A. El-Badawy, Mohamed A. Bakr

“…Energy-based control is utilized to overcome the uncontrollability of the quadcopter at physical singular configurations, for instance, when commanding the quadcopter to gain altitude while pitched at 90∘. Three looping strategies (circular, clothoidal, and newly developed constant thrust) are implemented on a nonlinear model of the quadcopter. …”
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Performance analysis of a satellite–multi-terrestrial relay network with hardware impairments using switch-and-stay combining scheme by Kefeng Guo, Bangning Zhang, Yuzhen Huang, Daoxing Guo

“…Space information networks are proposed to broaden the observation area and realize continuous information acquisition using satellites and high-altitude platform stations. Space information networks are able to enhance detection and transmission capabilities compared to the current single Earth observation satellite. …”
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Aeroengine High-Attitude/Low Mach Number Oscillations: Mechanism and Prevention Design by Jiqiang Wang

“…The issue of aeroengine oscillations over high-attitude and low-speed flight envelope has been an unsolved problem due to their classified nature and hard reproduction in simulated altitude test stand. Efforts have been sought for either structural integrity or component damage. …”
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ふるさとの暮らしとつながる五感の風景 by Tanaka Naoto 田中尚人

“…Two case studies focus on the need to change this relationship between a local community and its landscapes through the protection of the cultural landscapes of an agricultural plateau of medium altitude. The plateau in question is the Shiraito plateau on the island of Kyūshū where the relationship between the landscape and local communities was disrupted during the disastrous Kumamoto earthquakes in 2016.…”
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Temporal Activity Patterns of the Spider Wasp Pepsis montezuma Smith (Hymenoptera: Pompilidae) in a Disturbed Lower Montane Rainforest (Manizales, Colombia) by Carlos Restrepo-Giraldo, Juanita Rodriguez, James P. Pitts

“…We studied the temporal activity pattern of the spider wasp Pepsis montezuma Smith (Hymenoptera: Pompilidae) in a disturbed lower montane rainforest, which is located in the city of Manizales, Colombia, at an altitude of 2,150 m. Females of this species are diurnal with two peaks of activity: one in the morning and the other in the afternoon. …”
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Design and Simulation of Eight-Rotor Unmanned Aerial Vehicle Based on Hybrid Control System by Xueqiang Shen, Jiwei Fan, Haiqing Wang

“…In order to control the position and attitude of unmanned aerial vehicle (UAV) better in different environments, this study proposed a hybrid control system with backstepping and PID method for eight-rotor UAV in different flight conditions and designed a switching method based on altitude and attitude angle of UAV. The switched process of hybrid controller while UAV taking off, landing, and disturbance under the gust is verified in MATLAB/Simulink. …”
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Influence of wind disturbances and nonlinearities of servo drive on the contour of stabilization of the flight of height of unmanned aerial vehicle by V. A. Malkin, I. V. Rozhkov, A. A. San’ko

“…The reaction of the contour of the UAV flight altitude stabilization to the wind is considered, taking into account the nonlinearity of the servo drive elements. …”
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Hepcidin: A Critical Regulator of Iron Metabolism during Hypoxia by Korry J. Hintze, James P. McClung

“…Hypoxia has profound effects on iron absorption and results in increased iron acquisition and erythropoiesis when humans move from sea level to altitude. The effects of hypoxia on iron balance have been attributed to hepcidin, a central regulator of iron homeostasis. …”
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Le lien entre le paysage des cinq sens (gokan no fūkei 五感の風景) et la vie quotidienne du furusato by Tanaka Naoto

“…Two case studies focus on the need to change this relationship between a local community and its landscapes through the protection of the cultural landscapes of an agricultural plateau of medium altitude. The plateau in question is the Shiraito plateau on the island of Kyūshū where the relationship between the landscape and local communities was disrupted during the disastrous Kumamoto earthquakes in 2016.…”
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Finite-Time Antisaturation Tracking Control for Hypersonic Vehicle with Uncertain Dynamics by Yuwei Cui, Yushan He, Aijun Li, Jun Li, Shuo Song

“…This paper concentrates on the problem of finite-time altitude and velocity tracking control for hypersonic flight vehicles that encounter unmodeled dynamics and input saturations. …”
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Aircraft Noise Monitoring in Function of Flight Safety and Aircraft Model Determination by Andrija Vidović, Igor Štimac, Robert Zečević-Tadić

“…In addition, it is possible to determine the aircraft altitude and, perhaps most significantly, the increase of flight safety through the detection of potential failures on the aircraft structure and/or engine during the overflight of a noise monitoring terminal.…”
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A LANDSLIDE SUSCEPTIBILITY ANALYSIS FOR BUZAU COUNTY, ROMANIA by VERONICA ZUMPANO, HAYDAR HUSSIN, PAOLA REICHENBACH, DAN BĂLTEANU, MIHAI MICU, SIMONE STERLACCHINI

“…The model was run considering eight environmental factors: slope, altitude, internal relief, planar and profile curvature, aspect, soil, land-use. …”
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La production d’un paysage par et pour le ski by Caterina Franco

“…Indeed, the creation of ski resorts is not only realised by the implantation of buildings and infrastructures at high altitudes. On the contrary, various components of the environment such as the forest, the morphology of the soil and the hydrography are modified. …”
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Disturbance Observer-Based Adaptive Control of Hypersonic Vehicles with Constrained Actuators by Guan Wang, Li Li, Weihua Li, Huajun Zhou, Changbo Ma, Hongwei Xia

“…For the velocity subsystem, an auxiliary system is employed to handle the scramjet input saturation issue. For the altitude subsystem, the magnitude/rate constraints and the dynamics of aerodynamic control surfaces are addressed by the control allocation module. …”
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A Unifying Polarization Formalism for Electric and Magnetic Multipole Interactions by R. Casini, R. Manso Sainz, A. López Ariste, N. Kaikati

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Topographie et restitution du chantier de l’aqueduc d’Arles (Bouches-du-Rhône) by Robert Fabre, Philippe Leveau, Vincent Dumas

“…To bypass the western part of the range while losing as little slope as possible, the aqueduct used bridges to enter and cross the valleys cut into the slopes, and crossed the interfluves via tunnels with a cumulative length of 950 m.In the terminal section, which starts at an altitude of 24 m NGF (general levelling of France), the pipe had to maintain sufficient altitude to supply the Roman colony. …”
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Evaluation of Vector Parameters of Wind and Its Role in Dust Storm in Iran’s Sistan by Taghi Tavoosi, Mohammad Saligheh, Nematollah Safarzaei

“…Since this system has been located in East and Southeast of Sistan, in the north-south movement of air from high-altitude site located on the Caspian Sea to the northwest and it change to southeast-Northwest current.…”
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Butterfly Species Richness in Selected West Albertine Rift Forests by Patrice Kasangaki, Anne M. Akol, Gilbert Isabirye Basuta

“…The first cluster had forests characterized by relatively high altitude and low species richness despite the big area in the case of Rwenzori and being close to the supposed Pleistocene refugium. …”
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A contribution to the knowledge of the butterfly fauna (Lepidoptera: Rhopalocera) of the Cerkljansko Idrijsko region, west Slovenia, with notes on their vertical distribution by Rudi Verovnik

“…Črna prst at an altitude around 1800 m. The highest diversity of butterfly species and habitat types was observed between 500 and 750 m. …”
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Concise Neural Nonaffine Control of Air-Breathing Hypersonic Vehicles Subject to Parametric Uncertainties by Xiangwei Bu, Qiong Wang, Yan Zhao, Guangjun He

“…For the velocity dynamics, an adaptive neural controller is devised based on a minimal-learning parameter (MLP) technique for the sake of decreasing computational loads. The altitude dynamics is rewritten as a pure feedback nonaffine formulation, for which a novel concise neural control approach is achieved without backstepping. …”
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