Results 21 to 30 of about 72,085 (305)

Habitat-mediated facilitation and counteracting ecosystem engineering interactively influence ecosystem responses to disturbance [PDF]

, 2011
Recovery of an ecosystem following disturbance can be severely hampered or even shift altogether when a point disturbance exceeds a certain spatial threshold. Such scale-dependent dynamics may be caused by preemptive competition, but may also result from
Zee, Els M. van der, Zee, Els M. van der,, van der Heide, Tjisse; id_orcid, van der Heide, Tjisse, Eriksson, Britas Klemens; id_orcid, van der Heide, T., Eriksson, B.K., O'Hara, R., O'Hara, Robert, Tjisse van der Heide, Heide, Tjisse van der,, Johan S. Eklöf, Johan S Eklöf, Serena Donadi, Eklöf, Johan,, O\u27Hara, R., Robert O'Hara, Eklöf, Johan S., Heide, Tjisse van der, Els M van der Zee, Eklöf, Johan, Eklöf, J.S., O´Hara, Robert, van der Zee, Els, O’Hara, Robert,, Els M. van der Zee, Eklöf, Johan S.,, Eriksson, Britas Klemens, Donadi, Serena, Britas Klemens Eriksson, O'Hara, Robert B., van der Zee, Els M., Donadi, Serena,, van der Zee, E.M., Eriksson, Britas Klemens,, Donadi, S.   +35 more
core   +1 more source

Model-free active input–output feedback linearization of a single-link flexible joint manipulator: An improved active disturbance rejection control approach

Measurement + Control, 2021
Traditional input–output feedback linearization requires full knowledge of system dynamics and assumes no disturbance at the input channel and no system’s uncertainties.
Wameedh Riyadh Abdul-Adheem, Ibraheem Kasim Ibraheem, Amjad J Humaidi, Ahmad Taher Azar   +3 more
doaj   +1 more source

GENERAL VIEWS OF PATIENTS WITH OLFACTORY DISTURBANCE

Nippon Jibiinkoka Gakkai Kaiho, 1962
On 145 cases which complained chiefly of the olfactory disturbance, general obseruation was carried.The following are the results:1) There can be found a clinical significance only in the severe olfactory disturbance.2) Common cold and inflammation of the upper respiratory tract excite often a cause of olfactory disturbance.3) Patients with hypotension
ICHIHARA, M., MIYAO, T., KOMATSU, A., KAMIO, T., TAIRA, K., SHIRAKURA, K., SAKUMA, Y., ICHIHARA, F., ASAKA, H., NAKASHIMA, S., SHIOKAWA, H., ODA, R.   +11 more
openaire   +3 more sources

A refined disturbance rejection control for vibration suppression of smart structures under unknown disturbances

Journal of Low Frequency Noise, Vibration and Active Control, 2021
Vibrations are usually caused by continuous disturbances with large amplitudes. Different from other control methods, disturbance rejection control is a potential method, which considers the unknown disturbances in the control design.
Shun-Qi Zhang, Xiao-Yu Zhang, Hong-Li Ji, Shen-Shun Ying, Rüdiger Schmidt   +4 more
doaj   +1 more source

Modeling effects of disturbance across life history strategies of stream fishes

, 2021
A central goal of population ecology is to establish linkages between life history strategy, disturbance, and population dynamics. Globally, disturbance events such as drought and invasive species have dramatically impacted stream fish populations and ...
Fournier, RJ, Magoulick, DD, Bond, NR
core   +1 more source

From species to communities : the signature of recreational use on a tropical river ecosystem [PDF]

, 2015
This work was funded by an ERC grant (BIOTIME 250189). A. E. M. thanks the Royal Society and M. D. thanks the Scottish Funding Council (MASTS HR09011) for support.Disturbance can impact natural communities in multiple ways.
Anne E. Magurran (7159652), Ramnarine, Indar W., Shimadzu, Hideyasu, Dornelas, Maria, Amy E. Deacon (7159835), Maria Dornelas (732753), Magurran, Anne, Hideyasu Shimadzu (2567326), Deacon, Amy Elizabeth, Indar W. Ramnarine (7159841)   +9 more
core   +1 more source

Disturbance observer based generalized wind/solar/battery consistent control strategy for AC microgrids

, 2021
Although the distributed renewable energy source is an advisable solution for ac microgrids to reduce fuel consumption and CO2 emission, the fluctuation and uncertainty of renewable energy source also brings significant problem to the safe and stable ...
Sun, Qiuye, Hu, Jingwei, Jiang, Songchen, Huang, Hailong, Gui, Yonghao; id_orcid, Wang, Rui   +5 more
core   +1 more source

Partially Coupled Inverse Model Design for Multivariable Disturbance Observer-Based Control Based on Generalized Relative Input Disturbance Gain

IEEE Access, 2022
In this paper, a novel inverse model is designed for multivariable disturbance observer-based (MDOB) control system. A new interaction measure, generalized relative input disturbance gain (GRIDG), is proposed to quantify the disturbance rejection ...
Wu Cai, Peng Shen, Yuting Shang, Xinghan Du   +3 more
doaj   +1 more source

Synchronization of Two Self-Synchronous Vibrating Machines on an Isolation Frame

Shock and Vibration, 2011
This paper investigates synchronization of two self-synchronous vibrating machines on an isolation rigid frame. Using the modified average method of small parameters, we deduce the non-dimensional coupling differential equations of the disturbance ...
Chunyu Zhao, Qinghua Zhao, Zhaomin Gong, Bangchun Wen   +3 more
doaj   +1 more source

Dynamic Stall Control by Passive Disturbance Generators [PDF]

AIAA Journal, 2011
Passive cylindrical disturbance generators mounted near the leading edge of an airfoil significantly improved its performance under dynamic stall conditions. Time-resolved particle image velocimetry and simultaneous pressure measurements were conducted at the midchord of a pitching airfoil equipped with passive disturbance generators.
Heine, Benjamin, Mulleners, Karen, Joubert, Gilles, Raffel, Markus   +3 more
openaire   +3 more sources