Готові списки джерел за темами / Balanced dispersal

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Добірка наукової літератури з теми "Balanced dispersal"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Balanced dispersal"

Diffendorfer, James E. "Testing Models of Source-Sink Dynamics and Balanced Dispersal." Oikos 81, no. 3 (1998): 417. http://dx.doi.org/10.2307/3546763.

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Biswas, S., D. Pal, P. K. Santra, Ebenezer Bonyah, and G. S. Mahapatra. "Dynamics of a Three-Patch Prey-Predator System with the Impact of Dispersal Speed Incorporating Strong Allee Effect on Double Prey." Discrete Dynamics in Nature and Society 2022 (June 20, 2022): 1–26. http://dx.doi.org/10.1155/2022/7919952.

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This paper presents the dispersal effect on a prey-predator model with three-patch states incorporating a strong Allee effect on the first two prey populations. The prey species are considered to be mutable to exhibit a balanced dispersal between the patches. The dispersal among patches is directed through lower fit patches to higher fit patches. This paper derives a new approach for dispersal and Allee’s effect with the specific condition on the stability on a three-patch of a three-species prey-predator anticipated system. The persistence of the system is observed because of the dispersal ef

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Chen, Shanshan, Junping Shi, Zhisheng Shuai, and Yixiang Wu. "Global dynamics of a Lotka–Volterra competition patch model*." Nonlinearity 35, no. 2 (2021): 817–42. http://dx.doi.org/10.1088/1361-6544/ac3c2e.

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Abstract The global dynamics of the two-species Lotka–Volterra competition patch model with asymmetric dispersal is classified under the assumptions that the competition is weak and the weighted digraph of the connection matrix is strongly connected and cycle-balanced. We show that in the long time, either the competition exclusion holds that one species becomes extinct, or the two species reach a coexistence equilibrium, and the outcome of the competition is determined by the strength of the inter-specific competition and the dispersal rates. Our main techniques in the proofs follow the theor

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Doncaster, C. Patrick, Jean Clobert, Blandine Doligez, Lars Gustafsson, and Etienne Danchin. "Balanced Dispersal Between Spatially Varying Local Populations: An Alternative To The Source‐Sink Model." American Naturalist 150, no. 4 (1997): 425–45. http://dx.doi.org/10.1086/286074.

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H. Tattersall, F., D. W. Macdonald, and B. J. Hart and W. Manley. "Balanced dispersal or source-sink-do both models describe wood mice in farmed landscapes?" Oikos 106, no. 3 (2004): 536–50. http://dx.doi.org/10.1111/j.0030-1299.2004.13114.x.

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Gomes, Fernanda Melo, Clemir Candeia de Oliveira, Roberta da Rocha Miranda, Rafael Carvalho da Costa, and Maria Iracema Bezerra Loiola. "Relationships between soil seed bank composition and standing vegetation along chronosequences in a tropical dry forest in north-eastern Brazil." Journal of Tropical Ecology 35, no. 4 (2019): 173–84. http://dx.doi.org/10.1017/s0266467419000130.

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AbstractTo better understand the role of seed banks in ecological succession of dry forests, we compared similarities between vegetation and seed banks and assessed the relative contributions of seed dispersal and persistence in chronosequences in the Brazilian semi-arid region. To sample the standing vegetation and the seed bank, we collected data in three sites with three successional ages in each one (5 y, 25 y and 45 y). A total of 180 soil samples (three sites × three successional ages × 10 plots × two components) were collected. The composition of the seed bank was assessed by the seedli

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Zhao, Huan, Jiang Long Yu, Arash Tahmasebi, and Pei Hong Wang. "An Improved Particle Swarm Optimization Algorithm with Invasive Weed." Advanced Materials Research 621 (December 2012): 356–59. http://dx.doi.org/10.4028/www.scientific.net/amr.621.356.

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This paper presents a hybrid algorithm based on invasive weed optimization (IWO) and particle swarm optimization (PSO), named IW-PSO. IWO is a relatively novel numerical stochastic optimization algorithm. By incorporating the reproduction and spatial dispersal of IWO into the traditional PSO, exploration and exploitation of the PSO can be enhanced and well balanced to achieve better performance. In a set of 15 test function problem, the parameters of IW-PSO were analyzed and selected, and the computational results show that IW-PSO can effectively obtain higher quality solutions so as to avoid

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Gibert, Corentin, Gilles Escarguel, Annika Vilmi, Jianjun Wang, and Jenny McGuire. "Per-Simper, An Innovative Method for Identifying Community Assembly Processes Within Modern, Recent, and Deep-Time Paleontological Assemblages." Bulletin of the Florida Museum of Natural History 60, no. 2 (2023): 81. http://dx.doi.org/10.58782/flmnh.dsol7912.

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How biological communities are assembled is an old but lively debate, especially today, as the efficiency of conservation policies depend on our capacity to correctly identify the assembly processes at play within the species assemblages we aim to protect. The wide range of assembly modes, once seen as mutually exclusive hypothesis are now seen as part of a continuum where the opposite ends correspond to niche- and dispersal-assembly perspectives. Niche-assembled communities are closed and balanced with a stable taxonomic composition depending on deterministic processes when dispersal-assemble

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Humphreys, John, Matthew R. C. Harris, Roger J. H. Herbert, Paul Farrell, Antony Jensen, and Simon M. Cragg. "Introduction, dispersal and naturalization of the Manila clam Ruditapes philippinarum in British estuaries, 1980–2010." Journal of the Marine Biological Association of the United Kingdom 95, no. 6 (2015): 1163–72. http://dx.doi.org/10.1017/s0025315415000132.

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The introduction of the Manila clam into British coastal waters in the 1980s was contested by conservation agencies. While recognizing the value of the clam for aquaculture, the government decided that it posed no invasive risk, as British sea temperatures would prevent naturalization. This proved incorrect. Here we establish the pattern of introduction and spread of the species over the first 30 years of its presence in Britain. We report archival research on the sequence of licensed introductions and examine their relationship in time and space to the appearance of wild populations as reveal

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Dakhil, Mohammed A., Marwa Waseem A. Halmy, Walaa A. Hassan, Ali El-Keblawy, Kaiwen Pan, and Mohamed Abdelaal. "Endemic Juniperus Montane Species Facing Extinction Risk under Climate Change in Southwest China: Integrative Approach for Conservation Assessment and Prioritization." Biology 10, no. 1 (2021): 63. http://dx.doi.org/10.3390/biology10010063.

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Climate change is an important driver of biodiversity loss and extinction of endemic montane species. In China, three endemic Juniperus spp. (Juniperuspingii var. pingii, J.tibetica, and J.komarovii) are threatened and subjected to the risk of extinction. This study aimed to predict the potential distribution of these three Juniperus species under climate change and dispersal scenarios, to identify critical drivers explaining their potential distributions, to assess the extinction risk by estimating the loss percentage in their area of occupancy (AOO), and to identify priority areas for their

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Більше джерел

Дисертації з теми "Balanced dispersal"

ICARDI, MATTEO. "Computational models for the simulation of turbulent poly-dispersed flows: Large Eddy Simulation and Quadrature-Based Moment Method." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2496099.

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This work focuses on the development of efficient computational tools for the simulation of turbulent multiphase polydispersed flows. In terms of methodologies we focus here on the use of Large Eddy Simulation (LES) and Quadrature-Based Methods of Moments (QBMM). In terms of applications the work is finalised, in order to be applied in the future, to particle production processes (precipitation and crystallisation in particular). An important part of the work concerns the study of the flow field in a Confined Impinging Jets Reactor (CIJR), frequently used in particle production processes. The

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Xavier-Junior, Francisco Humberto. "Systèmes disperses pour l’administration orale de paclitaxel à base de microemulsion et de nanocapsules mucoadhesives contenant de l’huile de copaïba." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA114810/document.

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La voie orale suscite un intérêt pour l'administration des médicaments anticancéreux, qui sont encore administrés essentiellement par voie parentérale. En effet, la biodisponibilité des principes actifs est fortement limitée par leurs propriétés physico-chimiques et des facteurs physiologiques. L'utilisation de systèmes à base de lipides et de nanoparticules polymères peuvent se montrer très performants pour surmonter certaines limitations. L'objectif de ce travail a consisté à développer deux familles de systèmes dispersés pour la voie orale contenant dans leur phase interne de l'huile de cop

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Récapet, Charlotte. "Keeping the balance ? : Management of oxidative stress, body mass and reproduction under energetic constraints by dispersing and philopatric collared flycatchers." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10272/document.

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La dispersion, c’est-à-dire le déplacement d’un individu entre deux sites de reproduction, est un processus clé pour la dynamique des métapopulations et les flux de gènes. Son succès peut être modulé par des différences de phénotype ou syndromes de dispersion. Cependant, les contraintes environnementales (externes) et physiologiques (internes) qui sous-tendent ces syndromes restent mal connus. Ce projet vise à clarifier l’impact des variations environnementales et des contraintes oxydatives (liées aux espèces réactives de l’oxygène produites durant la respiration) sur les phénotypes associés à

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Bernáth, František. "Rozptýlená výroba a jej vplyv na kvalitu dodávok elektrickej energie." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233625.

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This work deals with the deployment of distributed power sources into the electric power grid. The nature of these sources causes that the massive integration may experience problems with power quality in the local context, and also overall reliability of supply in the range of interconnected power systems may be endangered. Work is focused on local voltage quality problems with special emphasis on analysis and design of tools (e.g. reactive power compensation units of power plants or dynamic voltage control by transformers 110/22kV) for voltage control in power distribution systems. These too

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Doutch, DA. "Origin, geochemistry, stratigraphic and structural setting of the Archean Invincible gold deposit, St Ives gold camp, Yilgarn Craton, Western Australia." Thesis, 2020. https://eprints.utas.edu.au/34876/1/Doutch_whole_thesis.pdf.

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The Invincible orogenic gold deposit is located in the world-class St Ives gold field, Yilgarn Craton, Western Australia. The St Ives gold field has produced over 400 t of gold since 1980. The ~1.5 million-ounce Invincible deposit is hosted on the western limb of the Kambalda Anticline, in metamorphosed and hydrothermally altered mudstone and sandstone-conglomerate units of the Upper Black Flag Group. Rare ore veins also occur in the overlying Lower Merougil Group. Prior to the discovery of the Invincible deposit, these young volcano-sedimentary successions were considered less prospective for

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Книги з теми "Balanced dispersal"

Kovzun, I. G., V. A. Prokopenko, A. V. Panko, et al. Nanochemical, nanostructural and biocolloidal aspects of transformations in dispersions of iron-aluminosilicate minerals. PH "Akademperiodyka", 2020. http://dx.doi.org/10.15407/akademperiodyka.416.188.

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It was considered the modern ideas of colloidal and biocolloidal nanoscience concerning complex transformational processes in widespread dispersions of iron-aluminosilicates. It was shown for the fi rst time that they infl uence on catastrophic phenomena in marine turbiditic-pelitic sediments and soils consisting of iron-aluminosilicates. Th e fundamental study results of nano- and microstructure transformations of disperse ironaluminosilicate compositions are presented. And it was established the possibilities of their application in: constructing of protective structures; balneology and medi

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Alarie, Benjamin, and Andrew J. Green. Planting the Seed. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199397594.003.0003.

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This chapter examines one of the most central issues: the appointment process. Appointment processes vary considerably across countries—from very open, political procedures to secretive, closed processes—and even self-selection by judges. The discussion includes appointment by the executive and processes that combine the judicial, executive, and/or legislative branches, such as occurs with “advice and consent” in the United States. It questions whether there is a connection between the appointments process and decision-making, whether political processes lead to political judges, whether judge

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Yi-chong, Xu, and Patrick Weller. Location. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198719496.003.0007.

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This chapter identifies the two groups of IOs among those we study—those that are centralized and those that are dispersed. It then explores the dilemmas raised by issues of location and centralization: the interplay required to balance geographical representation and subject specialization; the need to identify priorities between normative standard setting and service delivery to member states; the levels of discretion and lines of accountability, and the requirement to manage the careers of staff. It argues that distance and location challenge easy assumptions about control and agency in IOs

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Anderson, Maxwell L. Antiquities. Oxford University Press, 2017. http://dx.doi.org/10.1093/wentk/9780190614928.001.0001.

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The destruction of ancient monuments and artworks by the Taliban in Afghanistan and the Islamic State in Iraq and Syria has shocked observers worldwide. Yet iconoclastic erasures of the past date back at least to the mid-1300s BCE, during the Amarna Period of ancient Egypt’s 18th dynasty. Far more damage to the past has been inflicted by natural disasters, looters, and public works. Art historian Maxwell Anderson’s Antiquities: What Everyone Needs to Know® analyzes continuing threats to our heritage, and offers a balanced account of treaties and laws governing the circulation of objects; the h

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Geerse, Miriam. Everyday Violence of Forced Displacement. Lexington Books, 2023. https://doi.org/10.5040/9781978734982.

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The Everyday Violence of Forced Displacement: Memory, Community and Identity Politics among Internally Displaced Kurds in Turkey is based on ethnographic research in four Istanbul neighborhoods in the early 2000s and after. Miriam Geerse focuses on individuals and families that tried to sustain meaningful lives in an urban context marked by political and structural violence. Geerse argues that forces, other than war and forced displacement, instilled in many forced migrants a pressing need and desire to keep hammering home the price and pain of displacement. Much of this book then bears witnes

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Частини книг з теми "Balanced dispersal"

Lachat, Thibault, Janine Oettel, and Felix Meyer. "Do Saproxylic Species Need Habitats, Connectivity, or Connected Habitats?" In Ecological Connectivity of Forest Ecosystems. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-82206-3_3.

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Abstract The importance of saproxylic species within forest ecosystems cannot be overstated, as they span a wide range of taxa contributing to the recycling of dying and dead woody material. Originally defined as invertebrates reliant on decaying wood, wood-inhabiting fungi, or other saproxylics, the group has been expanded to include species involved in or dependent on moribund trees and wood decay processes. Since centuries, their habitat has faced loss and fragmentation from intensive forest management practices and land use changes, underscoring the urgency of conservation efforts. While h

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Bonte, Dries. "Cost–Benefit Balance of Dispersal and the Evolution of Conditional Dispersal Strategies in Spiders." In Spider Ecophysiology. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33989-9_6.

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Morel, Christophe. "Population Balances and Moments Transport Equations for Disperse Two-Phase Flows." In Mathematical Modeling of Disperse Two-Phase Flows. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20104-7_5.

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Dmytruk, Veronika, Bogdana Gayvas, Bogdan Markovych, and Anatolii Dmytruk. "On the issues of optimization and regulation of the convective drying process of materials in drying units." In DRYING PROCESSES: APPROACHES TO IMPROVE EFFICIENCY. TECHNOLOGY CENTER PC, 2025. https://doi.org/10.15587/978-617-8360-09-2.ch5.

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The chapter presents the main approaches to optimizing and regulating the drying process of materials, taking into account the structural characteristics and operating principles of drying equipment. An essential factor in optimizing such processes is the consideration of the drying object and the mathematical methods used to describe drying problems. To this end, widely applied practical methods of mathematical modeling of capillary-porous and dispersed materials are analyzed, along with the specific features of models that describe heat and mass transfer in such materials. Particular attenti

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Perrin, Nicolas, and Jérôme Goudet. "Inbreeding, kinship, and the evolution of natal dispersal." In Dispersal. Oxford University PressOxford, 2001. http://dx.doi.org/10.1093/oso/9780198506607.003.0009.

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Abstract Using analytical tools from game theory, we investigate the relevance of a series of hypotheses concerning natal dispersal, focusing in particular on the interaction between inbreeding and kin competition, as well as on the components of mating and social systems that are likely to interfere with these phenomena. A null model of pure kin competition avoidance predicts a balanced equilibrium in which both sexes disperse equally. Inbreeding costs have the potential to destabilize this equilibrium, resulting in strongly sex-biased dispersal.

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Van Vuren, Dirk. "Mammalian Dispersal and Reserve Design." In Behavioral Ecology and Conservation Biology. Oxford University PressNew York, NY, 1998. http://dx.doi.org/10.1093/oso/9780195104899.003.0014.

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Abstract The proper design of nature reserves has been a matter of considerable debate (Diamond, 1975; Terborgh, 1975; Simberloff and Abele, 1976). In general, the best plan is large reserves and many of them (Soule and Simberloff, 1986), but resources rarely are sufficient to achieve this goal. Thus, a major challenge for conservation biologists has been how to make do with reserves that are smaller than desired. Small reserves support small populations, and smaller populations are more likely to become extinct; however, extinction may be counteracted by immigration (Diamond, 1975). Research

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Robbeets, Martine, Mark Hudson, and Chao Ning. "Transeurasian archaeolinguistics." In The Oxford Handbook of Archaeology and Language. Oxford University Press, 2025. https://doi.org/10.1093/oxfordhb/9780192868350.013.20.

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Abstract The classification of the Transeurasian languages as a family consisting of Japonic, Koreanic, Tungusic, Mongolic, and Turkic languages is gradually gaining acceptance in linguistic literature. This chapter aims at summarizing linguistic inferences with regard to the dating of the root and the nodes in the family, the location of the homeland, and the reconstruction of subsistence vocabulary. Bringing together linguistic results with those from archaeology and genetics, it presents evidence for population movements associated with agriculture in Neolithic and Bronze Age northeast Asia

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Wiseman, Sam. "All Boundaries Are Lost: Travel, Fragmentation and Interconnection in Virginia Woolf." In The Reimagining of Place in English Modernism. Liverpool University Press, 2016. http://dx.doi.org/10.5949/liverpool/9780990895886.003.0005.

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Woolf’s childhood was characterised by contrasts between urban and rural, movement and belonging, past and future, domesticity and the outdoor landscape. These influences are evident in her work’s balance between nostalgic reflection and an acceptance of the inexorable transience of human existence and sensation. Woolf is interested in the ways in which new developments in travel and technology can defamiliarise us, and reveal interconnections with other beings. Her attentiveness to the sedimentary layering of the past within rural landscapes is applied to her reimagining of the urban environm

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Hendry, Andrew P., Vincent Castric, Michael T. Kinnison, and Thomas P. Quinn. "The Evolution of Philopatry and Dispersal Homing Versus Straying in Salmonids." In Evolution Illuminated. Oxford University PressNew York, NY, 2003. http://dx.doi.org/10.1093/oso/9780195143850.003.0003.

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Abstract Many animals reproduce at the same site as their parents, a phenomenon called philopatry. In some cases, philopatry can be the simple result of geographic isolation or limited movement ability. In other cases, philopatry can be strong even when migratory movements take individuals far from their natal site. We must therefore seek explanations for philopatry through selective factors that favor return to natal sites rather than non-natal sites. The tendency for philopatry in any population or species is balanced to varying degrees by some dispersal to non-natal sites, with some groups

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Kerth, Gerald. "Relatedness, Life History, and Social Behavior in the Long-Lived Bechstein’s Bat, Myotis bechsteinii." In Functionaland Evolutionary Ecology of Bats. Oxford University PressNew York, NY, 2006. http://dx.doi.org/10.1093/oso/9780195154726.003.0011.

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Abstract Since 1993, I have studied the social behavior and genetic population structure of the communally breeding Bechstein’s bat, Myotis bechsteinii, to analyze the adaptive value of female sociality. Maternity colonies of M. bechsteinii normally consist of 15–45 females and their young; males are solitary. Individual females do not give birth every year, weaning on average c. 0.7 young per year. Thus, colonies are comprised of reproductive and nonreproductive bats. Low annual individual reproductive success is balanced by a high survival rate of about 80% per year for adult females. Geneti

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Тези доповідей конференцій з теми "Balanced dispersal"

Srinivasan, Vedanth. "Evaluating Wettability Maps and Corrosion Behavior Prevalent in Turbulent Oil-Water Flows Using Computational Fluid Dynamics." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05628.

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Abstract Internal corrosion during the oil transportation process has been long associated with the interaction of free water with the pipe surface. As a result, prediction of water phasic distribution along the flow line, especially the information whether oil or water wets the pipe wall is crucial in order to identify mitigation strategies and establish overall pipeline integrity. Use of computational techniques can not only address the wettability issues but also help identify mitigation criteria and its effective deployment. In the present study, detailed Computational Fluid Dynamics (CFD)

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Protheroe, M. D., A. M. Al-Jumaily, and R. J. Nates. "Poly-Disperse Droplet Evaporation Model." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86192.

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A model for the evaporation of micron-size, poly-disperse water droplets into air has been developed that allows the prediction of droplet size distribution changes during evaporation. The model incorporates either adiabatic or isothermal boundary conditions and allows for the variation of fluid transport and thermodynamic properties during the evaporation process. The governing equations for the model are developed from the coupled mass and energy balances for the droplets and for the surrounding air assuming they are flowing along a tube and assuming diffusion mass transport and conduction h

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"MULTI-SCALE APPROACH TO POPULATION BALANCE MODELLING OF DISPERSE SYSTEMS." In 1st International Conference on Simulation and Modeling Methodologies, Technologies and Applications. SciTePress - Science and and Technology Publications, 2011. http://dx.doi.org/10.5220/0003620701860191.

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Lalouani, Wassila, Mohamed Younis, Mohamed El-Amine Chergui, and Nadjib Badache. "Load-Balanced and Energy-Efficient Coverage of Dispersed Events Using Mobile Sensor/Actuator Nodes." In GLOBECOM 2015 - 2015 IEEE Global Communications Conference. IEEE, 2014. http://dx.doi.org/10.1109/glocom.2014.7417482.

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Marchisio, Daniele L., Marco Vanni, Antonello A. Barresi, and Giancarlo Baldi. "Simulation of Poly-Disperse Multiphase Systems via Computational Fluid Dynamics." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95467.

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Multiphase systems, such as sprays and aerosols, are characterized by the existence of a continuous primary phase and a disperse secondary phase. The interaction between the two phases and/or the chemical reactions can affect both composition and characteristic velocity of the primary and secondary phases, as well as the size distribution of the secondary phase. In order to describe these systems, the continuity, mass balance and momentum balance equations as well as additional equations for turbulence, must be solved. Nevertheless if there is the need to account for the evolution of the secon

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Kouba, Gene E. "Mechanistic Models for Droplet Formation and Breakup." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45542.

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Mechanistic models are created to predict the smallest droplet or bubble of a low concentration, inviscid, dispersed fluid that can be formed by shear from the continuous fluid (or droplet impact on a wall) and the largest droplet/bubble that can survive in a shear flow. Weber number criteria are developed for both the smallest and largest droplet/bubbles based on energy and force balances. The droplet deformation is predicted from an energy balance between available energy from drag on the droplet and energy required to deform the droplet. Different droplet deformation geometries are incorpor

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Shi, Shanbin, Xiaoqin Zhang, Xiaodong Sun, and Hongbin Zhang. "Development of Five-Equation Drift Flux Model for Thermal Non-Equilibrium Phenomena in LWRs." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-67981.

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The classic four-equation drift-flux model treats the two-phase flow as a mixture to formulate mass, momentum, and energy balance equations. The dispersed phase is modeled in the mass balance equation to describe the mass transfer between the two phases. However, this model implies an assumption of the thermal equilibrium in the mixture energy balance equation. Therefore, a five-equation drift-flux model and its constitutive equations have been developed to relax the thermal equilibrium assumption in the classic four-equation drift-flux model when it is applied to thermal non-equilibrium pheno

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Putra, Satya A., Richard L. Christiansen, and James P. Brill. "Development of Two Fluid Model for Pressure Drop Prediction in Two-Phase Vertical Churn Flow." In ASME 2001 Engineering Technology Conference on Energy. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/etce2001-17059.

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Abstract Comprehensive mechanistic models for two-phase flow in pipes have been proposed by several authors. These models predict pressure gradients for bubble, dispersed bubble, churn, slug, and annular flow patterns. The churn flow pressure gradient is often formulated based on a homogeneous model or modification of a slug flow model. A new mechanistic model for churn flow in vertical two-phase flow in pipes has been formulated applying two-fluid model concepts. The two-fluid model for churn flow is developed by defining the mass and momentum balances for gas and liquid phases. An interfacia

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Motin, Abdul, John M. Walsh, and André Bénard. "Modeling Droplets Shearing and Coalescence Using a Population Balance Method in Produced Water Treatment Systems." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53097.

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Quantification of oil droplet shearing in produced water treatment facilities is a crucial aspect of operations for the oil and gas industry. In this paper, a detail mathematical modeling of droplet breakage and coalescence using a Population Balance Method (PBM) is addressed. The PBM models the dynamics of droplet size distribution due continuous interactions between individual droplets (such as coalescence and breakup). An understanding of the PBM in regards to the conservation of mass of dispersed droplets is also developed. A stand-alone PBM is used for calculating coalescence and breakage

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