Bibliografie tematiche / Disturbance energy budgets

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Letteratura scientifica selezionata sul tema "Disturbance energy budgets"

Autore: Grafiati

Pubblicato: 5 ottobre 2024

Ultima modifica: 31 luglio 2025

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Articoli di riviste sul tema "Disturbance energy budgets"

Brear, Michael J., Frank Nicoud, Mohsen Talei, Alexis Giauque, and Evatt R. Hawkes. "Disturbance energy transport and sound production in gaseous combustion." Journal of Fluid Mechanics 707 (July 12, 2012): 53–73. http://dx.doi.org/10.1017/jfm.2012.264.

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AbstractThis paper presents an analysis of the energy transported by disturbances in gaseous combustion. It extends the previous work of Myers (J. Fluid Mech., vol. 226, 1991, 383–400) and so includes non-zero mean-flow quantities, large-amplitude disturbances, varying specific heats and chemical non-equilibrium. This extended form of Myers’ ‘disturbance energy’ then enables complete identification of the conditions under which the famous Rayleigh source term can be derived from the equations governing combusting gas motion. These are: small disturbances in an irrotational, homentropic, non-di

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Starry, O. S. "Ecosystem ecology as a framework for organizing and advancing greenroof research." Israel Journal of Ecology and Evolution 62, no. 1-2 (2016): 97–102. http://dx.doi.org/10.1080/15659801.2015.1031470.

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This paper explores the application of an ecosystem ecology framework to greenroof systems. It investigates how aspects of greenroof design or structure relate to functions such as rates of nutrient and energy cycling. Three main sections include energy budgets, cycling of nutrients and water, and ecosystem response to disturbance. Comparisons between greenroofs and other systems indicated that, functionally, greenroofs may be very different from ecosystem analogs. A further assessment of the greenroof energy budget called into question how food webs are supported. An evaluation of factors pre

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KARIMI, NADER, MICHAEL J. BREAR, and WILLIAM H. MOASE. "Acoustic and disturbance energy analysis of a flow with heat communication." Journal of Fluid Mechanics 597 (February 1, 2008): 67–89. http://dx.doi.org/10.1017/s0022112007009573.

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This paper presents a comparative analysis of the budgets of acoustic energy and Myers' second-order ‘disturbance energy’ in a simple inhomogeneous flow with heat communication. The flow considered is non-diffusive and one-dimensional, with excitation by downstream-travelling acoustic and entropic disturbances. Two forms of heat communication are examined: a case with only steady heat communication and another in which unsteady heat addition cancels the generation of entropy disturbances throughout the inhomogeneous region.It is shown that significant entropic disturbances are usually generate

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Arlettaz, Raphaël, Sébastien Nusslé, Marjana Baltic, et al. "Disturbance of wildlife by outdoor winter recreation: allostatic stress response and altered activity–energy budgets." Ecological Applications 25, no. 5 (2015): 1197–212. https://doi.org/10.5281/zenodo.13536443.

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(Uploaded by Plazi for the Bat Literature Project) Anthropogenic disturbance of wildlife is of growing conservation concern, but we lack comprehensive approaches of its multiple negative effects. We investigated several effects of disturbance by winter outdoor sports on free-ranging alpine Black Grouse by simultaneously measuring their physiological and behavioral responses. We experimentally flushed radio-tagged Black Grouse from their snow burrows, once a day, during several successive days, and quantified their stress hormone levels (corticosterone metabolites in feces [FCM] collected from

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Giroux, Jean-Francois, and Jean Bédard. "Activity budgets of greater snow geese in fall." Canadian Journal of Zoology 68, no. 12 (1990): 2700–2702. http://dx.doi.org/10.1139/z90-375.

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We examined whether the fall activity budgets of greater snow geese (Chen caerulescens atlantica) vary between years and sites by comparing time-budget data gathered from 1982 to 1984 at the Montmagny and Cap-Saint-Ignace sanctuaries in Quebec. Feeding and resting accounted for more than 70% of the activities during the daylight period. At Cap-Saint-Ignace, geese spent less time feeding and more time resting during the 2nd year of the study, whereas no such annual variation was found at Montmagny. Snow geese also spent more time feeding and less time resting at Montmagny than at Cap-Saint-Igna

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Soudijn, Floor H., Tobias van Kooten, Hans Slabbekoorn, and André M. de Roos. "Population-level effects of acoustic disturbance in Atlantic cod: a size-structured analysis based on energy budgets." Proceedings of the Royal Society B: Biological Sciences 287, no. 1929 (2020): 20200490. http://dx.doi.org/10.1098/rspb.2020.0490.

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Anthropogenic underwater noise may negatively affect marine animals. Yet, while fishes are highly sensitive to sounds, effects of acoustic disturbances on fishes have not been extensively studied at the population level. In this study, we use a size-structured model based on energy budgets to analyse potential population-level effects of anthropogenic noise on Atlantic cod ( Gadus morhua ). Using the model framework, we assess the impact of four possible effect pathways of disturbance on the cod population growth rate. Through increased stress, changes in foraging and movement behaviour, and e

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Fraser, Zoe L., Ross M. Culloch, and Sean D. Twiss. "As clear as day: nocturnal activity differs from diurnal activity in a temporally constrained capital breeder." Behaviour 156, no. 10 (2019): 997–1016. http://dx.doi.org/10.1163/1568539x-00003553.

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Abstract Time-activity budgets are fundamental to behavioural studies, allowing examination of how individuals allocate their time, and potentially energy, and how these patterns vary spatially and temporally and in relation to habitat, individual identity, sex, social status and levels of anthropogenic disturbance. Direct observations of animal behaviour, especially in the wild, are often limited to daylight hours; therefore, many activity budgets relate to diurnal activity only, or assumptions are made about nocturnal activity. Activity budgets have been a key component of many behavioural a

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Riddington, R., M. Hassall, S. J. Lane, P. A. Turner, and R. Walters. "The impact of disturbance on the behaviour and energy budgets of Brent GeeseBranta b. bernicla." Bird Study 43, no. 3 (1996): 269–79. http://dx.doi.org/10.1080/00063659609461019.

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Più fonti

Tesi sul tema "Disturbance energy budgets"

Klein, Jean-Michel. "Étude des instabilités de combustion, mouvements de flamme et flashbacks dans un foyer comprenant un élargissement brusque." Electronic Thesis or Diss., Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2024. http://www.theses.fr/2024ESMA0012.

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La conception des futurs statoréacteurs bénéficierait d'une meilleure compréhension des instabilités de combustion apparaissant dans les écoulements rapides présentant des recirculations : une problématique étudiée à l'ONERA avec le banc MICAEDI au LAboratoire des Ecoulements Réactifs et de leurs Techniques d'Etude (LAERTE) de l'ONERA. Dans ce dispositif, une flamme de prémélange méthane-air s’établit au voisinage d’une marche descendante, dans un environnement présentant des similitudes avec les foyers de statoréacteurs. Pour certains points de fonctionnement, d’importantes oscillations de pr

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Capitoli di libri sul tema "Disturbance energy budgets"

Burke, William J. "Storm time energy budgets of the global thermosphere." In Midlatitude Ionospheric Dynamics and Disturbances. American Geophysical Union, 2008. http://dx.doi.org/10.1029/181gm21.

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Marcos, Bruno, João Gonçalves, Domingo Alcaraz-Segura, Mário Cunha, and João P. Honrado. "A satellite-based multi-dimensional approach to identify potential post-fire regime shifts in ecosystem functioning." In Advances in Forest Fire Research 2022. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_8.

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Wildfires can profoundly impact many aspects of matter flows and energy budgets in ecosystems. Exacerbated by projected shifts in climate, land use, and forest management, changes in fire regimes can lead to decreased ecosystem resilience, regime shifts, and ecosystem collapse. Thorough assessments of ecosystem resilience to wildfires are thus critical to bridge gaps between science, policy, and management. To that end, approaches based on ecosystem functioning offer an integrative view of ecosystem responses to wildfire-induced changes and provide quicker, quantifiable responses to disturbanc

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Islam, Md Hasibul, Zuhara Chavez, and Monica Bellgran. "An Exploratory Study on Integrating Sustainability Aspects During the Acquisition of Production Equipment." In Advances in Transdisciplinary Engineering. IOS Press, 2020. http://dx.doi.org/10.3233/atde200143.

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Production equipment such as machines have crucial impact on the overall performance of production operations in manufacturing industries, since there is a strong correlation between the machines and working conditions and performance on the shop floor. Well designed production equipment has the potential to achieve economic gain by reducing the disturbances during the operational phase, to fulfill environmental commitment by reducing emissions and resources consumption and utility, and to increase employee satisfaction ensuring safety and good ergonomics. Therefore, when acquiring production

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Atti di convegni sul tema "Disturbance energy budgets"

Huet, Maxime. "Budgets of Disturbances Energy for Nozzle Flows at Subsonic and Choked Regimes." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63525.

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The noise generated by the passage of acoustic and entropy perturbations through subsonic and choked nozzle flows is investigated numerically using an energetic approach. Low-order models are used to reproduce the experimental results of the Hot Acoustic Test rig (HAT) of DLR and energy budgets are performed to characterize the reflection, transmission and dissipation of the fluctuations. Because acoustic and entropy perturbations are present in the flow in the general case, classical acoustic energy budgets cannot be used and the disturbances energy budgets proposed by Myers (J. Fluid Mech. 2

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Pannier, Christopher P., Kira Barton, David Hoelzle, and Zhi Wang. "A Model of Liquid-Drop Spreading for Electrohydrodynamic Jet Printing." In ASME 2015 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/dscc2015-9995.

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Electrohydrodynamic jet (E-jet) printing is a recent technique for high resolution additive micromanufacturing. With high resolution comes sensitivity to small disturbances, which has kept this technique from reaching its industrial potential. Closed loop control of E-jet printing can overcome these disturbances, but it requires an improved understanding of ink droplet spreading on the substrate and a physical model to predict printed feature locations and geometries from process inputs and disturbances. This manuscript examines a model of ink droplet spreading that uses assumptions that are i

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Shao, Q., C. Huang, and J. F. Huang. "FOREST PHENOLOGICAL TRENDS IN THE MIDDLE AND HIGH LATITUDE OF THE NORTHERN HEMISPHERE." In Лесные экосистемы в условиях изменения климата: биологическая продуктивность и дистанционный мониторинг. Crossref, 2020. http://dx.doi.org/10.25686/7233.2020.6.58831.

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Vegetation phenology is the study of periodically recurring patterns of growth and development of plants, which affect terrestrial ecosystem carbon, energy budget balance, fire disturbance, and climate– biosphere interactions. The increases in surface temperature had already altered the extent of vegetation phenology. Vegetation phenology can make some responses to climate factors, and the current climate change has attracted more research for the trend of vegetation phenology and its causes. The purpose of this paper is to investigate the spatial and temporal trend of forest phenology at mid

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Geng, Kaihe, Ce Yang, Xinyu He, Chenxing Hu, Hanzhi Zhang, and Xin Shi. "Circulation Budget Analysis of the Leading-Edge Vortex in a Wells Turbine Under Steady Inflow Conditions." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-81890.

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Abstract Due to the narrow operating range with the high efficiency of Wells turbines, the performance of Oscillating Water Column (OWC) systems is extremely limited by the stall issue. In this study, a detailed investigation on the flow physics at three typical flow rates corresponding to the design, stall inception, and deep stall conditions is performed, aiming to explore the mechanisms governing the evolution of the leading-edge vortex in terms of the circulation budget analysis. For this purpose, 3D unsteady Reynolds-averaged Navier-Stokes equations with the shear-stress-transport turbule

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Chen, Li-Wei, Christian Wakelam, Jonathan Ong, Andreas Peters, Andrea Milli, and Vittorio Michelassi. "Numerical Investigation of the Compressible Flow Through a Turbine Center Frame Duct." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75307.

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Numerical investigation of the compressible flow in the Turbine Center Frame (TCF) duct was carried out using a Reynolds-averaged Navier-Stokes (RANS) method, and a Hybrid RANS/Large Eddy Simulation (HLES) method, i.e. Stress-Blended Eddy Simulation (SBES). The reference Reynolds number based on the TCF inlet condition is 530,000, and the inlet Mach number is 0.41. It is found that the boundary layer flow behavior is very sensitive to the incoming turbulence characteristics, so the upstream grid used to generate turbulence in the experiment is also included in the computational domain. Results

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