Journal articles on the topic 'Hybrid Migration'

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1

Amazonas, Daniela, Rafael Aleixo, Jörg Schleicher, and Jessé C. Costa. "Anisotropic complex Padé hybrid finite-difference depth migration." GEOPHYSICS 75, no. 2 (March 2010): S51—S59. http://dx.doi.org/10.1190/1.3337317.

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Standard real-valued finite-difference (FD) and Fourier finite-difference (FFD) migrations cannot handle evanescent waves correctly, which can lead to numerical instabilities in the presence of strong velocity variations. A possible solution to these problems is the complex Padé approximation, which avoids problems with evanescent waves by rotating the branch cut of the complex square root. We have applied this approximation to the acoustic wave equation for vertical transversely isotropic media to derive more stable FD and hybrid FD/FFD migrations for such media. Our analysis of the dispersion relation of the new method indicates that it should provide more stable migration results with fewer artifacts and higher accuracy at steep dips. Our studies lead to the conclusion that the rotation angle of the branch cut that should yield the most stable image is 60° for FD migration, as confirmed by numerical impulse responses and work with synthetic data.
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BIERNE, NICOLAS, THOMAS LENORMAND, FRANÇOIS BONHOMME, and PATRICE DAVID. "Deleterious mutations in a hybrid zone: can mutational load decrease the barrier to gene flow?" Genetical Research 80, no. 3 (December 2002): 197–204. http://dx.doi.org/10.1017/s001667230200592x.

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The aim of this paper is to investigate the effect of deleterious mutations in a hybrid zone maintained by selection against hybrids. In such zones, linkage disequilibria among hybrid depression loci, resulting from a balance between migration and selection, are crucial in maintaining the barrier because they allow each locus, in addition to its own selection coefficient, to cumulate indirect selective effects from other loci. Deleterious alleles produce heterosis and increase by this means the effective migration rate in structured populations. In a hybrid zone, they therefore contribute to decrease linkage disequilibria as well as the barrier to gene flow imposed by hybrid depression. However, deleterious mutations have no effect: (i) when selection against hybrids is weak, because linkage disequilibria are small even without heterosis in this case, or (ii) when selection against hybrids is so strong that it overwhelms heterosis. On the other hand, with moderate selection against hybrids, the decrease in the strength of the barrier due to heterosis may reach detectable levels, although it requires relatively small population sizes and/or migration rates. The effect is expected to be small and only within small genomes where loci are tightly linked can it become strong. Nevertheless, neglecting mutational load may to some extent obscure the estimations of selective parameters based either on artificial F1 crosses or on cline characteristics.
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3

Buchyn, M., and N. Markhaichuk. "MIGRATION AS AN INSTRUMENT OF THE HYBRID WAR." National Technical University of Ukraine Journal. Political science. Sociology. Law, no. 3(55) (December 21, 2022): 42–47. http://dx.doi.org/10.20535/2308-5053.2022.3(55).269540.

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The article is devoted to research of features of the use of migration as an important instrument for the prosecution of hybrid war. Using a complex of general scientific, logical, and empirical scientific methods, two main strategies of using migration policy in the context of conducting hybrid aggression are singled out: positive and negative. A positive strategy involves the use of migrants by the aggressor state to strengthen its own positions and spread its own influence over the victim state. In such cases, the aggressor state, as a rule, directs migration flows to its own territory, using the arriving migrants as an instrument to strengthen its potential. In the case of using a negative strategy, the goal is to weaken the victim state by directing migration flows to its territory. For this, migrants from underdeveloped countries are most often used, who a priori can be a potential destabilizing factor in the territory of the country that has become the object of hybrid aggression. It is emphasized that in order to achieve its own goals through the effective use of migration processes, the aggressor state needs to control three main parameters of international migration: the number of migrants and the composition of migration flows; the direction of movement of migrants; and the behavior of migrants in a new place of residence. In the first case, important parameters describing migrants may be their level of qualification, the ethnic and religious composition of the migrating population, their age and gender characteristics, etc. In the second case, we are talking about emigration or immigration, which will ultimately affect the population of a certain country or territory. The third case involves monitoring the level of stability of a certain country or region and, consequently, forcing the victim state to take certain actions. It is emphasized that the exercise of control over the parameters mentioned above and their choice depend on the chosen strategy of using migration as an instrument during the implementation of hybrid aggression.
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Veen, Thor, Nina Svedin, Jukka T. Forsman, Mårten B. Hjernquist, Anna Qvarnström, Katherine A. Thuman Hjernquist, Johan Träff, and Marcel Klaassen. "Does migration of hybrids contribute to post-zygotic isolation in flycatchers?" Proceedings of the Royal Society B: Biological Sciences 274, no. 1610 (November 28, 2006): 707–12. http://dx.doi.org/10.1098/rspb.2006.0058.

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In the face of hybridization, species integrity can only be maintained through post-zygotic isolating barriers (PIBs). PIBs need not only be intrinsic (i.e. hybrid inviability and sterility caused by developmental incompatibilities), but also can be extrinsic due to the hybrid's intermediate phenotype falling between the parental niches. For example, in migratory species, hybrid fitness might be reduced as a result of intermediate migration pathways and reaching suboptimal wintering grounds. Here, we test this idea by comparing the juvenile to adult survival probabilities as well as the wintering grounds of pied flycatchers ( Ficedula hypoleuca ), collared flycatchers ( Ficedula albicollis ) and their hybrids using stable isotope ratios of carbon (δ 13 C) and nitrogen (δ 15 N) in feathers developed at the wintering site. Our result supports earlier observations of largely segregated wintering grounds of the two parental species. The isotope signature of hybrids clustered with that of pied flycatchers. We argue that this pattern can explain the high annual survival of hybrid flycatchers. Hence, dominant expression of the traits of one of the parental species in hybrids may substantially reduce the ecological costs of hybridization.
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5

Toews, David P. L., Kira E. Delmore, Matthew M. Osmond, Philip D. Taylor, and Darren E. Irwin. "Migratory orientation in a narrow avian hybrid zone." PeerJ 5 (April 18, 2017): e3201. http://dx.doi.org/10.7717/peerj.3201.

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Background Zones of contact between closely related taxa with divergent migratory routes, termed migratory divides, have been suggested as areas where hybrid offspring may have intermediate and inferior migratory routes, resulting in low fitness of hybrids and thereby promoting speciation. In the Rocky Mountains of Canada there is a narrow hybrid zone between Audubon’s and myrtle warblers that is likely maintained by selection against hybrids. Band recoveries and isotopic studies indicate that this hybrid zone broadly corresponds to the location of a possible migratory divide, with Audubon’s warblers migrating south-southwest and myrtle warblers migrating southeast. We tested a key prediction of the migratory divide hypothesis: that genetic background would be predictive of migratory orientation among warblers in the center of the hybrid zone. Methods We recorded fall migratory orientation of wild-caught migrating warblers in the center of the hybrid zone as measured by video-based monitoring of migratory restlessness in circular orientation chambers. We then tested whether there was a relationship between migratory orientation and genetic background, as measured using a set of species-specific diagnostic genetic markers. Results We did not detect a significant association between orientation and genetic background. There was large variation among individuals in orientation direction. Mean orientation was towards the NE, surprising for birds on fall migration, but aligned with the mountain valley in which the study took place. Conclusions Only one other study has directly analyzed migratory orientation among naturally-produced hybrids in a migratory divide. While the other study showed an association between genetic background and orientation, we did not observe such an association in yellow-rumped warblers. We discuss possible reasons, including the possibility of a lack of a strong migratory divide in this hybrid zone and/or methodological limitations that may have prevented accurate measurements of long-distance migratory orientation.
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6

Almutairi, Badr. "Secure mitigation and migration of virtual machines over hybrid cloud hypervisors infrastructure." International Journal of ADVANCED AND APPLIED SCIENCES 8, no. 7 (July 2021): 7–13. http://dx.doi.org/10.21833/ijaas.2021.07.002.

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As workloads increase in the industry so does the requirement for IT resources. IT companies are now shifting from in-house data centers to cloud-based IT services such as IAAS, PAAS, and SAAS which can offer flexibility at different levels to the developers of the applications working on different projects. Lots of researchers have contributed to migrating virtual machines migration from one cloud service provider to the other in case of backup as a service and other related services. Some of the previous works by some researchers focus on the migration of SAAS and PAAS onto different cloud service provider platforms. This research work focuses on the mitigation and migration of IAAS, PAAS, and SAAS services of the cloud. My contribution in this research will be in how to avoid loss of data during mitigation and migration of the VM from one Hypervisor environment to the other hypervisor environment on a physical machine infrastructure. This will help SME’s to provide end-user access to their data without worrying about the losses which may have incurred if the Mitigation process was not carried out carefully while migrating VM’s from one bare metal Hypervisor environment to the other bare metal Hypervisor environment.
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Islam, Md Ariful, Ho Jin Choi, Raju Dash, Syeda Ridita Sharif, Diyah Fatimah Oktaviani, Dae-Hyun Seog, and Il Soo Moon. "N-Acetyl-d-Glucosamine Kinase Interacts with NudC and Lis1 in Dynein Motor Complex and Promotes Cell Migration." International Journal of Molecular Sciences 22, no. 1 (December 24, 2020): 129. http://dx.doi.org/10.3390/ijms22010129.

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Recently, we showed that N-acetylglucosamine kinase (NAGK), an enzyme of amino sugar metabolism, interacts with dynein light chain roadblock type 1 (DYNLRB1) and promotes the functions of dynein motor. Here, we report that NAGK interacts with nuclear distribution protein C (NudC) and lissencephaly 1 (Lis1) in the dynein complex. Yeast two-hybrid assays, pull-down assays, immunocytochemistry, and proximity ligation assays revealed NAGK–NudC–Lis1–dynein complexes around nuclei, at the leading poles of migrating HEK293T cells, and at the tips of migratory processes of cultured rat neuroblast cells. The exogenous expression of red fluorescent protein (RFP)-tagged NAGK accelerated HEK293T cell migration during in vitro wound-healing assays and of neurons during in vitro neurosphere migration and in utero electroporation assays, whereas NAGK knockdown by short hairpin RNA (shRNA) delayed migration. Finally, a small NAGK peptide derived from the NudC interacting domain in in silico molecular docking analysis retarded the migrations of HEK293T and SH-SY5Y cells. These data indicate a functional interaction between NAGK and dynein–NudC–Lis1 complex at the nuclear envelope is required for the regulation of cell migration.
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8

Chen, Yuqing, Bowen Guo, and Gerard T. Schuster. "Migration of viscoacoustic data using acoustic reverse time migration with hybrid deblurring filters." GEOPHYSICS 84, no. 3 (May 1, 2019): S127—S136. http://dx.doi.org/10.1190/geo2018-0256.1.

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Viscoacoustic migration can significantly compensate for the amplitude loss and phase distortion in migration images computed from highly attenuated data. However, solving the viscoacoustic wave equation requires a significant amount of storage space and computation time, especially for least-squares migration methods. To mitigate this problem, we used acoustic reverse time migration (RTM) instead of viscoacoustic migration to migrate the viscoacoustic data and then we correct the amplitude and phase distortion by hybrid deblurring filters in the image domain. Numerical tests on synthetic and field data demonstrate that acoustic RTM combined with hybrid deblurring filters can compensate for the attenuation effects and produce images with high resolution and balanced amplitudes. This procedure requires less than one-third of the storage space and is [Formula: see text] times faster compared with the viscoacoustic migration, but at the cost of mildly reduced accuracy. Here, [Formula: see text] represents the number of iterations used for least-squares migration method. This method can be extended to 3D migration at even a greater cost saving.
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9

Bachmann, Sascha-Dominik. "Mass Migration as a Hybrid Threat? – A Legal Perspective." Polish Political Science Yearbook 50 (2021): 1–26. http://dx.doi.org/10.15804/ppsy202122.

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Migration as a weapon sounds like a policy statement by resurgent nationalistic parties (and governments) in the West. However, politics and the human cost aside, what if an adversary (both state and non-state actor) does exploit the current global crisis of mass migration due to globalization, war, and political unrest? This article will look at the ongoing mass migration to the European Union within the wider security context of the so-called hybrid threats and/or ‘grey zone’ tactics. It looks at the various legal categories of migration as how the law can be weaponized as so-called ‘lawfare’ to undermine the existing legal frameworks distinguishing between legal and illegal migration. The authors recognize the possibility that this article will be used as an argument by the political actors involved for their nationalistic and anti-migration politics and policies. Yet, we believe that the potential of abusing the current vacuum for political gains along ideological party lines makes it necessary to provide a wider legal-security focused perspective on mass migration.
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10

Kim, Young C., Worth B. Hurt,, Louis J. Maher, and Patrick J. Starich. "Hybrid migration: A cost‐effective 3-D depth‐imaging technique." GEOPHYSICS 62, no. 2 (March 1997): 568–76. http://dx.doi.org/10.1190/1.1444166.

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The transformation of surface seismic data into a subsurface image can be separated into two components—focusing and positioning. Focusing is associated with ensuring the data from different offsets are contributing constructively to the same event. Positioning involves the transformation of the focused events into a depth image consistent with a given velocity model. In prestack depth migration, both of these operations are achieved simultaneously; however, for 3-D data, the cost is significant. Prestack time migration is much more economical and focuses events well even in the presence of moderate velocity variations, but suffers from mispositioning problems. Hybrid migration is a cost‐effective depth‐imaging approach that uses prestack time migration for focusing; inverse migration for the removal of positioning errors; and poststack depth migration for proper positioning. When lateral velocity changes are moderate, the hybrid technique can generate a depth image that is consistent with a velocity field. For very complex structures that require prestack depth migration, the results of the hybrid technique can be used to create a starting velocity model, thereby reducing the number of iterations for velocity model building.
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11

Johnson, K. E. "Transplantation studies to investigate mesoderm-ectoderm adhesive cell interactions during gastrulation." Journal of Cell Science 82, no. 1 (June 1, 1986): 99–117. http://dx.doi.org/10.1242/jcs.82.1.99.

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Experiments involving transplantation of the roof of the blastocoel in Rana pipiens embryos reveal that the inner surface of the roof of the blastocoel must be coated with a fibrous extracellular matrix (F-ECM) to serve as a substratum for mesodermal cell migration. When the roof of the blastocoel is inverted the original outer surface, now projecting toward the blastocoel, does not become coated with F-ECM and does not support mesodermal cell migration. When the roof of the blastocoel is removed from a normal embryo and transplanted into an interspecific arrested hybrid embryo known to be deficient in F-ECM synthesis, the grafted ectodermal fragment does not become coated with F-ECM and does not support normal mesodermal cell migration. When a hybrid graft is placed in a normal embryo, the grafted ectodermal fragment becomes coated with F-ECM and supports mesodermal cell migration. In normal control embryos migrating mesodermal cells are polarized due to formation of lamellipodia on their leading but not their trailing edges. These cells are arranged in overlapping layers. The leading cells form lamellipodia on the roof of the blastocoel and trailing cells form lamellipodia on one another.
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12

Potts, BM. "Population Dynamics and Regeneration of a Hybrid Zone Between Eucalyptus risdonii Hook-F and E amygdalina Labill." Australian Journal of Botany 34, no. 3 (1986): 305. http://dx.doi.org/10.1071/bt9860305.

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Regeneration of a hybrid zone between E. amygdalina and E. risdonii and pure species stands following wildfire is reported, as well as the reproductive and vegetative fitness of parental and hybrid phenotypes. E. risdonii phenotypes dominated the seed rain and seedling cohort and there was clearly a marked fitness differential between E. amygdalina and E. risdonii at their boundary. When the F1 type hybrid is in competition with both parental types it is generally reproductively the least fit, although frequently vegetatively vigorous. Reduced fitness appears to extend to advanced generations as hybrid phenotypes tending.toward either species are, on average, less fit than the corresponding parental type. The pattern of phenotypic fitness suggests that the species' boundary is in disequilibrium and it is argued that E. risdonii is invading the range of E. amygdalina by both pollen and seed migration. There is an asymmetric distribution of F1 type hybrids across the boundary and the hybrid swarm examined is being invaded by E. risdonii genes. It is suggested that hybridization may be associated with natural disequilibrium and, where seed migration is limited, boundary movements may be preceded by a wave of hybridization due partly to pollen swamping of the least fit species. Hybrid swarms may develop but, at the boundary of large stands, are probably transitory. There is a marked inertia in the population response to the prevailing selective regime due to the extremely slow population turnover and limited dispersal potential. This is discussed in the broader context of non-equilibrium models where it is argued that dispersal may be the factor limiting population response to perturbation of a shallow environmental gradient. This is due to large geographical shifts in the position of the null point and would be accentuated in a patchy environment where migration as a front is prevented.
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Ouyang, Aijia, Kenli Li, Xiongwei Fei, Xu Zhou, and Mingxing Duan. "A Novel Hybrid Multi-Objective Population Migration Algorithm." International Journal of Pattern Recognition and Artificial Intelligence 29, no. 01 (January 4, 2015): 1559001. http://dx.doi.org/10.1142/s0218001415590016.

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This paper presents a multi-objective co-evolutionary population migration algorithm based on Good Point Set (GPSMCPMA) for multi-objective optimization problems (MOP) in view of the characteristics of MOPs. The algorithm introduces the theory of good point set (GPS) and dynamic mutation operator (DMO) and adopts the entire population co-evolutionary migration, based on the concept of Pareto nondomination and global best experience and guidance. The performance of the algorithm is tested through standard multi-objective functions. The experimental results show that the proposed algorithm performs much better in the convergence, diversity and solution distribution than SPEA2, NSGA-II, MOPSO and MOMASEA. It is a fast and robust multi-objective evolutionary algorithm (MOEA) and is applicable to other MOPs.
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Stéphanou, Angélique, Simon Le Floc’h, and Arnaud Chauvière. "Hybrid modelling of mechanical cues in cell migration." ITM Web of Conferences 5 (2015): 00012. http://dx.doi.org/10.1051/itmconf/20150500012.

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15

Gutierrez, Jose A., and Yiuman Tse. "NYSE execution quality subsequent to migration to hybrid." Review of Quantitative Finance and Accounting 33, no. 1 (November 11, 2008): 59–81. http://dx.doi.org/10.1007/s11156-008-0101-z.

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Huang, Shujuan, Tiansen Li, Zhihao Ma, Feng Xiao, and Wenjuan Zhang. "EDF-Adaptive: A New Semipartitioned Scheduling Algorithm for Multiprocessor Real-Time." Journal of Sensors 2021 (December 13, 2021): 1–13. http://dx.doi.org/10.1155/2021/6377024.

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Most of the multiprocessor real-time scheduling algorithms follow the partitioned approach, the global approach, or the semipartitioned approach which is a hybrid of the first two by allowing a small subset of tasks to migrate. EDF-fm (Earliest Deadline First-based Fixed and Migrating) and EDF-os (Earliest Deadline First-based Optimal Semipartitioned) are semipartitioned approaches and were proposed for soft real-time sporadic task systems. Despite their desirable property that migrations are boundary-limited such as they can only occur at job boundaries, EDF-fm and EDF-os are not always optimal and have higher tardiness and cost of overheads due to task migration. To address these issues, in this paper, we classify the systems into different types according to the utilization of their tasks and propose a new semipartitioned scheduling algorithm, earliest deadline first-adaptive, dubbed as EDF-adaptive. Our experiments show that EDF-adaptive can achieve better performance than EDF-fm and EDF-os, in terms of system utilization and tardiness overhead. It is also proved that EDF-adaptive is able to lessen the task migration overhead, by reducing the number of migrating jobs and the number of processors to which a task is migrated.
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Chen, Chun, Bradford A. Young, Catherine S. Coleman, Anthony E. Pegg, and Dean Sheppard. "Spermidine/spermine N1-acetyltransferase specifically binds to the integrin α9 subunit cytoplasmic domain and enhances cell migration." Journal of Cell Biology 167, no. 1 (October 11, 2004): 161–70. http://dx.doi.org/10.1083/jcb.200312166.

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The integrin α9β1 is expressed on migrating cells, such as leukocytes, and binds to multiple ligands that are present at sites of tissue injury and inflammation. α9β1, like the structurally related integrin α4β1, mediates accelerated cell migration, an effect that depends on the α9 cytoplasmic domain. α4β1 enhances migration through reversible binding to the adapter protein, paxillin, but α9β1-dependent migration is paxillin independent. Using yeast two-hybrid screening, we identified the polyamine catabolizing enzyme spermidine/spermine N1-acetyltransferase (SSAT) as a specific binding partner of the α9 cytoplasmic domain. Overexpression of SSAT increased α9β1-mediated migration, and small interfering RNA knockdown of SSAT inhibited this migration without affecting cell adhesion or migration that was mediated by other integrin cytoplasmic domains. The enzyme activity of SSAT is critical for this effect, because a catalytically inactive version did not enhance migration. We conclude that SSAT directly binds to the α9 cytoplasmic domain and mediates α9-dependent enhancement of cell migration, presumably by localized effects on acetylation of polyamines or of unidentified substrates.
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Stojanovic, Mirjana, Slavica Bostjancic-Rakas, and Jasna Markovic-Petrovic. "Scada systems in the cloud and fog environments: Migration scenarios and security issues." Facta universitatis - series: Electronics and Energetics 32, no. 3 (2019): 345–58. http://dx.doi.org/10.2298/fuee1903345s.

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This paper addresses scenarios and security issues when migrating SCADA systems to cloud and fog environments. Migration strategies to the cloud refer to different cloud infrastructures (public, private or hybrid) as well as selection of cloud service. Benefits of cloud-based SCADA systems mainly refer to improving economic efficiency. We further address migration risks, with regards to quality of service and cyber security. Challenges in security provisioning encompass security solutions, risk management and test environment. Finally, we address emerging evolution of SCADA toward fog computing, including the three-tier system?s architecture and security issues.
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Kovalchuk, Vitaliy, Iryna Zharovska, Mykhailo Mykievych, Malvina Hrushko, and Mykhailo I. Hrabynskyi. "Transformation challenges for the international humanitarian law system: Migration crisis as the latest tool for hybrid warfare. (A vision from Ukraine)." UNISCI Journal 20, no. 59 (May 15, 2022): 129–44. http://dx.doi.org/10.31439/unisci-145.

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The article tries to present a theoretical-legal and international-practical analysis of the migration crisis as a tool for hybrid warfare, analysing the features of such a war and the peculiarities of using the flow of migrants and refugees as "living" weapons in a military conflict. The authors try to prove that a migration crisis can be provoked by an aggressor country using the hybrid warfare methodology attempting to destabilize the political situation, avoiding the resistance of the civil society of the target country without engaging in open hostilities. The authors stress the uncertainty surrounding the term "hybrid warfare" and propose their own classification of the modern hybrid warfare´ features. Based on the analysis of the use of migration crisis in Syria, Venezuela and Belarus, the article singles out the stages of employment of such a tool for warfare
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Loncke, Paul G., Timothy A. Gadosy, and Gilles H. Peslherbe. "A theoretical study of the mechanism of 1,2-migrations in methoxysiloxycarbene." Canadian Journal of Chemistry 80, no. 3 (March 1, 2002): 302–14. http://dx.doi.org/10.1139/v02-013.

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Intramolecular rearrangements of methoxysiloxycarbene (CH3OCOSiH3) have been investigated by means of ab initio molecular orbital theory and hybrid density functional theory calculations. Particular attention was paid to 1,2-silyl migration from oxygen to the carbene carbon, and to the analogous 1,2-methyl migration for comparison. A combination of frontier molecular orbital (FMO) theory, natural bond orbital (NBO) analysis, and the theory of atoms in molecules (AIM) were used to shed light on the mechanistic details of these rearrangements. The present analyses clearly indicate that 1,2-silyl migration involves nucleophilic attack by the carbene lone pair at silicon, whereas 1,2-methyl migration seems to involve an anion-like shift of the methyl group from oxygen to the "vacant" carbene p-orbital. Finally, based on the computed relative Gibbs free energy barriers, it is apparent that 1,2-silyl migration is much more favorable than 1,2-methyl migration, in keeping with experimental observations.Key words: carbenes, oxycarbenes, intramolecular rearrangements, 1,2-migrations, quantum chemistry, theory of atoms in molecules, natural bond orbital analysis
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Khan, Mohd Sha Alam, and R. Santhosh. "Hybrid Optimization Algorithm for VM Migration in Cloud Computing." Computers and Electrical Engineering 102 (September 2022): 108152. http://dx.doi.org/10.1016/j.compeleceng.2022.108152.

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Yan, Xin, Wenqiang Fan, Feiyu Cheng, Haochun Sun, Chenzhe Xu, Li Wang, Zhuo Kang, and Yue Zhang. "Ion migration in hybrid perovskites: Classification, identification, and manipulation." Nano Today 44 (June 2022): 101503. http://dx.doi.org/10.1016/j.nantod.2022.101503.

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23

Aleyadeh, Sam, Abdallah Moubayed, Parisa Heidari, and Abdallah Shami. "Optimal Container Migration/Re-Instantiation in Hybrid Computing Environments." IEEE Open Journal of the Communications Society 3 (2022): 15–30. http://dx.doi.org/10.1109/ojcoms.2022.3140272.

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Di Costanzo, Ezio, Roberto Natalini, and Luigi Preziosi. "A hybrid model of cell migration in zebrafish embryogenesis." ITM Web of Conferences 5 (2015): 00013. http://dx.doi.org/10.1051/itmconf/20150500013.

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Lin, Mingwei, Riqing Chen, Li Lin, Xuan Li, and Jingchang Huang. "Buffer-Aware Data Migration Scheme for Hybrid Storage Systems." IEEE Access 6 (2018): 47646–56. http://dx.doi.org/10.1109/access.2018.2866573.

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Oranskaia, Aleksandra, Jun Yin, Osman M. Bakr, Jean-Luc Brédas, and Omar F. Mohammed. "Halogen Migration in Hybrid Perovskites: The Organic Cation Matters." Journal of Physical Chemistry Letters 9, no. 18 (September 6, 2018): 5474–80. http://dx.doi.org/10.1021/acs.jpclett.8b02522.

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Dhuria, Ritika. "A HYBRID APPROACH FOR REDUCING DOWNTIME, MIGRATION TIME AND ENERGY CONSUMPTION OF LIVE VM MIGRATION." International Journal of Advanced Research in Computer Science 8, no. 8 (October 20, 2017): 22–26. http://dx.doi.org/10.26483/ijarcs.v8i8.4627.

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MIKHALEVSKYI, V., G. MIKHALEVSKA, and О. SHOKHANOV. "FEATURES OF THE SYSTEM OF AUTOMATION OF PROCESSES OF CONSTRUCTION OF HYBRID INFRASTRUCTURE WITH TRANSFER OF ALL CONFIGURATION DATA." Computer Systems and Information Technologies 1, no. 1 (September 2, 2020): 68–74. http://dx.doi.org/10.31891/csit-2020-1-9.

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The main features of the automated system development for synchronizing user data and various aspects of the Exchange Server infrastructure are discussed in the article. The system must make an inventory of the existing environment, make reports, accept data of the enterprise wishes and independently configure the components involved in user migration. The system must also restore all user settings that existed before the migration. It is the description of the automation of the building a hybrid infrastructure processes with the transfer of all configuration data and subsequent automatic configuration of the data migration path in a large enterprise with a distributed infrastructure of data centers. The automation of step-by-step migration is considered, namely: automation of building a hybrid infrastructure based on Microsoft Exchange Server and Office 365. In terms of the method of transfer from the local system to the cloud, "export / import" is used to migrate data policies and configurations that do not change often. User data that is migrated by another system is used but not developed. An automated system designed to automate the transfer of data from the local infrastructure in the Exchange Server environment. The software product has a functionality that automates almost all the work on the analysis of local infrastructure and further configuration of the cloud part, which minimizes the impact of the human factor on the success of projects. There is also a module that defines the wishes of the business on the conditions of migration, which allows you to dynamically detect the path of data migration. All data, collected during infrastructure analysis, as well as system user data, is exported by Microsoft Exchange to external media files as CSV files to be used by other modules and as TXT (HTML if required) for a tabular report that analyzed by staff. This kind of development allows many large companies to avoid the problems connected with the complex process of migrating global local infrastructure parameters to the cloud environment and improves the process of enterprise data analysis with subsequent automatic management of data migration in IT environments with complex network infrastructure. Time for pre-migration work is significantly reduced, as well as the probability of mistakes, made by staff, is reduced.
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Veebel, Viljar. "Is the European Migration Crisis Caused by Russian Hybrid Warfare?" Journal of Politics and Law 13, no. 2 (May 17, 2020): 44. http://dx.doi.org/10.5539/jpl.v13n2p44.

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Recent developments in European security situation, starting with the Russia-Ukraine conflict, followed by the complicated Brexit and political instability in the Middle East and North Africa, have given rise to instability in the European Union. Yet, none of the other factors could be compared with the risks caused by the massive influx of refugees into the EU that challenges both solidarity and responsibility of the member states. In this context, it is extremely important to understand the actual security threats related to the refugee crisis and the root causes of growing refugee flows. This article discusses the roots of large-scale migration flows in the European Union (EU) over the present decade and investigates the potential link between migration flows and modern hybrid warfare, referring to the coordination of various modes of warfare, such as military and non-military means, conventional and non-conventional capabilities, state and non-state actors with an aim to cause instability and disarrangement. It is intriguing to investigate whether the increase in migration flows could be linked to present confrontation in the global arena on the Russia-West axis. Common patterns of migration flows from Syria and Ukraine to the EU are discussed, as well as policy recommendations are given to diminish the negative impact of similar events in the future.
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Fei, Tong W., and Christopher L. Liner. "Hybrid Fourier finite-difference 3D depth migration for anisotropic media." GEOPHYSICS 73, no. 2 (March 2008): S27—S34. http://dx.doi.org/10.1190/1.2828704.

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When a subsurface is anisotropic, migration based on the assumption of isotropy will not produce accurate migration images. We develop a hybrid wave-equation migration algorithm for vertical transversely isotropic (VTI) media based on a one-way acoustic wave equation, using a combination of Fourier finite-difference (FFD) and finite-difference (FD) approaches. The hybrid method can suppress an additional solution that exists in the VTI acoustic wave equation, and it offers speed and other advantages over conventional FFD or FD methods alone. The algorithm is tested on a synthetic model involving log data from onshore eastern Saudi Arabia, including estimates of both intrinsic and layer-induced VTI parameters. Results indicate that VTI imaging in this region offers some improvement over isotropic imaging, primarily with respect to subtle structure and stratigraphy and to image continuity. These benefits probably will be overshadowed by perennial land seismic data issues such as near-surface distortions and multiples.
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31

Kaur, Ramandeep. "A Hybrid Approach for Virtual Machine Migration in Cloud Computing Environment." International Journal of Advanced Research in Computer Science and Software Engineering 7, no. 9 (October 31, 2017): 30. http://dx.doi.org/10.23956/ijarcsse.v7i9.407.

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A lot of research has been done in the field of cloud computing in computing domain. For its effective performance, variety of algorithms has been proposed. The role of virtualization is significant and its performance is dependent on VM Migration and allocation. More of the energy is absorbed in cloud; therefore, the utilization of numerous algorithms is required for saving energy and efficiency enhancement in the proposed work. In the proposed work, green algorithm has been considered with meta heuristic algorithms, ABC (Artificial Bee colony .Every server has to perform different or same functions. A cloud computing infrastructure can be modelled as Primary Machineas a set of physical Servers/host PM1, PM2, PM3… PMn. The resources of cloud infrastructure can be used by the virtualization technology, which allows one to create several VMs on a physical server or host and therefore, lessens the hardware amount and enhances the resource utilization. The computing resource/node in cloud is used through the virtual machine. To address this problem, data centre resources have to be managed in resource -effective manner for driving Green Cloud computing that has been proposed in this work using Virtual machine concept with ABC and Neural Network optimization algorithm. The simulations have been carried out in CLOUDSIM environment and the parameters like SLA violations, Energy consumption and VM migrations along with their comparison with existing techniques will be performed.
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32

Sossey-Alaoui, Khalid, Xiurong Li, Tamara A. Ranalli, and John K. Cowell. "WAVE3-mediated Cell Migration and Lamellipodia Formation Are Regulated Downstream of Phosphatidylinositol 3-Kinase." Journal of Biological Chemistry 280, no. 23 (April 11, 2005): 21748–55. http://dx.doi.org/10.1074/jbc.m500503200.

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WAVE3 is a member of the WASP/WAVE family of protein effectors of actin reorganization and cell movement. The precise role of WAVE3 in cell migration and its regulation, however, have not been elucidated. Here we show that endogenous WAVE3 was found to be concentrated in the lamellipodia at the leading edge of migrating MDA-MB-231 cells. Platelet-derived growth factor (PDGF) treatment induced lamellipodia formation as well as two-dimensional migration of cells in the wound-closure assay and chemotactic migration toward PDGF in three-dimensional migration chambers. Knockdown of WAVE3 expression by RNA interference prevented the PDGF-induced lamellipodia formation and cell migration. Treatment of cells with LY294002, an inhibitor of phosphatidylinositol 3-kinase (PI3K), also abrogated the PDGF-induced lamellipodia formation and cell migration, suggesting that PI3K may be required for WAVE3 activity. WAVE3 and the PI3K regulatory subunit, p85, were found to interact in a yeast two-hybrid screen, which was confirmed through co-immunoprecipitation. The WAVE3-p85 interaction was mediated by the N-terminal region of WAVE3 and the C-terminal SH2 domain of p85. These results imply that the WAVE3-mediated migration in MDA-MB-231 cells via lamellipodia formation is activated downstream of PI3K and induced by PDGF. The findings of the WAVE3-p85 partnership also suggest a potential regulatory role for p85 in WAVE3-dependent actin-cytoskeleton reorganization and cell migration.
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33

Kim, Yong Chan, and Titi Susilowati Prabawa. "Hybrid Internal Migration: The Factors Of Migration For Education Among Wana Tribe Community In Central Sulawesi." Jurnal Kawistara 10, no. 2 (August 22, 2020): 221. http://dx.doi.org/10.22146/kawistara.58018.

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Berdasarkan wawancara dengan warga desa yang bermigrasi dari suku Wana yang tinggal di Sulawesi Tengah di Indonesia, penelitian ini membahas tentang faktor yang mendorong migrasi ke kota untuk tujuan pendidikan. Kami menemukan bahwa orang tua mengarahkan anaknya pindah ke kota untuk mendapatkan pendidikan. Oleh karena itu, informasi, pengetahuan, dan pengalaman dari orang tua maupun generasi angkatan mereka secara langsung memengaruhi proses pengambilan keputusan untuk migrasi. Temuan dari penelitian ini menunjukkan bahwa migrasi generasi muda di daerah asal ditentukan oleh tiga faktor pendorong terkait dengan pengalaman migrasi orang tua di kota. Keputusan untuk migrasi suku Wana ke kota besar di wilayah Sulawesi Tengah tidak hanya untuk meningkatkan status sosial mereka, tetapi dalam rangka mengupayakan perubahan status ekonomi, peningkatan pendidikan, dan fasilitas di daerah asal. Secara umum, artikel ini menggambarkan alasan psikologis dan tantangan generasi orang tua suku Wana ketika berjuang mendorong anak-anak mereka untuk pergi ke kota besar dengan tujuan memperoleh pendidikan.Kata Kunci: Migrasi pendidikan; Pengambilan keputusan; Proses migrasi; Pengembangan masyarakat; Suku Wana.
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Asmussen, M. A., J. Arnold, and J. C. Avise. "The effects of assortative mating and migration on cytonuclear associations in hybrid zones." Genetics 122, no. 4 (August 1, 1989): 923–34. http://dx.doi.org/10.1093/genetics/122.4.923.

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Abstract We examine the influence of nonrandom mating and immigration on the evolutionary dynamics of cytonuclear associations in hybrid zones. Recursion equations for allelic and genotypic cytonuclear disequilibria were generated under models of (1) migration alone, assuming hybrid zone matings are random with respect to cytonuclear genotype; and (2) migration in conjunction with refined epistatic mating, in which females of the pure parental species preferentially mate with conspecific males. Major results are as follows: (a) even the slightest migration removes the dependency of the final outcome on initial conditions, producing a unique equilibrium in which both pure parental genotypes are maintained in the hybrid zone; (b) in contrast to nuclear genes, the dynamics of cytoplasmic allele frequencies appear robust to changes in the assumed mating system, yet are particularly sensitive to gene flow; (c) continued immigration can generate permanent cytonuclear disequilibria, whether mating is random or assortative; and (d) the order of population censusing (before versus after reproduction by immigrants) can have a dramatic effect on the magnitude but not the pattern of cytonuclear disequilibria. Using the maximum likelihood method, the parameter space of migration rates and assortative mating rates was examined for best fit to observed cytonuclear disequilibria data in a hybrid population of Hyla tree frogs. An epistatic mating model with a total immigration rate of about 32% per generation produces equilibrium gene frequencies and cytonuclear disequilibria consistent with the empirical observations.
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35

Troyanovsky, Boris, Tetyana Levchenko, Göran Månsson, Olga Matvijenko, and Lars Holmgren. "Angiomotin." Journal of Cell Biology 152, no. 6 (March 19, 2001): 1247–54. http://dx.doi.org/10.1083/jcb.152.6.1247.

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Angiostatin, a circulating inhibitor of angiogenesis, was identified by its ability to maintain dormancy of established metastases in vivo. In vitro, angiostatin inhibits endothelial cell migration, proliferation, and tube formation, and induces apoptosis in a cell type–specific manner. We have used a construct encoding the kringle domains 1–4 of angiostatin to screen a placenta yeast two-hybrid cDNA library for angiostatin-binding peptides. Here we report the identification of angiomotin, a novel protein that mediates angiostatin inhibition of migration and tube formation of endothelial cells. In vivo, angiomotin is expressed in the endothelial cells of capillaries as well as larger vessels of the human placenta. Upon expression of angiomotin in HeLa cells, angiomotin bound and internalized fluorescein-labeled angiostatin. Transfected angiomotin as well as endogenous angiomotin protein were localized to the leading edge of migrating endothelial cells. Expression of angiomotin in endothelial cells resulted in increased cell migration, suggesting a stimulatory role of angiomotin in cell motility. However, treatment with angiostatin inhibited migration and tube formation in angiomotin-expressing cells but not in control cells. These findings indicate that angiostatin inhibits cell migration by interfering with angiomotin activity in endothelial cells.
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36

Kim, Yangjin, and Soyeon Roh. "A hybrid model for cell proliferation and migration in glioblastoma." Discrete & Continuous Dynamical Systems - B 18, no. 4 (2013): 969–1015. http://dx.doi.org/10.3934/dcdsb.2013.18.969.

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37

NAKAJIMA, Shin-ichiro. "Organic/Inorganic Hybrid Materials as a Silver Ion Migration Inhibitor." JOURNAL OF THE JAPAN WELDING SOCIETY 89, no. 2 (2020): 135–39. http://dx.doi.org/10.2207/jjws.89.135.

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38

Bai, Tong, Bin Lyu, Paul Williamson, and Nori Nakata. "Receiver grouping strategies for hybrid geometric-mean reverse time migration." GEOPHYSICS 87, no. 2 (January 21, 2022): KS45—KS55. http://dx.doi.org/10.1190/geo2021-0428.1.

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Geometric-mean reverse time migration (GmRTM), a powerful crosscorrelation-based imaging method, generates higher resolution source images and is more robust to noise compared with conventional time-reversal imaging. The price to pay is the higher computational costs. Alternatively, we can adopt hybrid strategies by dividing the receivers into different groups. Conventional time reversal (i.e., wavefield summation) is performed inside each group, followed by the application of crosscorrelation imaging condition among different groups. Such hybrid strategies can retain the advantages of GmRTM and time reversal and are often more practical than pure GmRTM. Yet, designing appropriate grouping strategy is not trivial. Here, we have developed two grouping strategies (adjacent and scattered) and used synthetic and field-data examples to evaluate their performance with various group numbers. In addition to the spatial resolution of the source image, robustness to random noise is another important assessment criterion, for which we consider two distribution patterns, such as concentrated and scattered, of traces contaminated with strong random noise. We also evaluated their effectiveness to visualize events (in the image domain) that are not completely recorded by all receivers. Our comprehensive tests illustrate the respective advantages of the two grouping strategies.
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39

Wu, Shaojiang, Yibo Wang, Fei Xie, and Xu Chang. "Crosscorrelation migration of microseismic source locations with hybrid imaging condition." GEOPHYSICS 87, no. 1 (December 1, 2021): KS17—KS31. http://dx.doi.org/10.1190/geo2020-0896.1.

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Locating microseismic sources is critical to monitoring the hydraulic fractures that occur during fluid extraction/injection in unconventional oil/gas exploration, geothermal operations, and CO2 sequestration. Waveform-based seismic location methods can reliably and automatically image weak microseismic source locations without phase picking. Among them, the crosscorrelation migration (CCM) method can avoid excitation time scanning by generating virtual gathers. We have adopted a CCM location method based on the hybrid imaging condition (HIC). There are four main steps in the implementation of this method: (1) selection of receivers with good azimuthal coverage, (2) generation of virtual gathers by correlating the reference receiver with the rest of the receivers, (3) summation of back projections in the virtual gathers, and (4) multiplication of all summations. The CCM-HIC method is tested on synthetic and field data sets, and the results are compared with those obtained by the conventional summation imaging condition and multiplication imaging condition. The comparison results determine that CCM-HIC is sufficiently robust to obtain a source image with better stability and higher spatial resolution, despite the presence of strong noise.
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40

Wang, Xiaoyuan, Haikun Liu, Xiaofei Liao, Ji Chen, Hai Jin, Yu Zhang, Long Zheng, Bingsheng He, and Song Jiang. "Supporting Superpages and Lightweight Page Migration in Hybrid Memory Systems." ACM Transactions on Architecture and Code Optimization 16, no. 2 (June 2019): 1–26. http://dx.doi.org/10.1145/3310133.

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41

Soo Hoo, Andrew J., Chris K. Rokkas, and Peter J. Rossi. "Migration of endovascular plug in hybrid repair of dysphagia lusoria." Journal of Vascular Surgery Cases and Innovative Techniques 4, no. 2 (June 2018): 140–43. http://dx.doi.org/10.1016/j.jvscit.2018.02.006.

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42

Liu, Haikun, Renshan Liu, Xiaofei Liao, Hai Jin, Bingsheng He, and Yu Zhang. "Object-Level Memory Allocation and Migration in Hybrid Memory Systems." IEEE Transactions on Computers 69, no. 9 (September 1, 2020): 1401–13. http://dx.doi.org/10.1109/tc.2020.2973134.

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43

Altahat, Mohammad A., Anjali Agarwal, Nishith Goel, and Jim Kozlowski. "Dynamic Hybrid-copy Live Virtual Machine Migration: Analysis and Comparison." Procedia Computer Science 171 (2020): 1459–68. http://dx.doi.org/10.1016/j.procs.2020.04.156.

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44

Moura, Rodrigo Costa de, Lizandro de Souza Oliveira, Guilherme Bayer Schneider, Mauricio Lima Pilla, Adenauer Correa Yamin, and Renata Hax Sander Reiser. "Intf-HybridMem: Page migration in hybrid memories considering cost efficiency." Sustainable Computing: Informatics and Systems 29 (March 2021): 100466. http://dx.doi.org/10.1016/j.suscom.2020.100466.

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45

Tesson, Pierre, Myriam Ammi, Djamel Ghomri, Mickaël Daligault, Matthieu Péret, and Jean Picquet. "Intra-aortic migration of a Kirschner pin: hybrid surgical repair." Journal of Shoulder and Elbow Surgery 25, no. 9 (September 2016): e281-e283. http://dx.doi.org/10.1016/j.jse.2016.05.013.

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46

Manh, Tran Dinh, Nguyen Dang Nam, Gihad Keyany Abdulrahman, Muhammad Humran Khan, I. Tlili, Ahmad Shafee, M. Shamlooei, and Trung Nguyen-Thoi. "Investigation of hybrid nanofluid migration within a porous closed domain." Physica A: Statistical Mechanics and its Applications 551 (August 2020): 123960. http://dx.doi.org/10.1016/j.physa.2019.123960.

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47

Tai, Jianzhe, Bo Sheng, Yi Yao, and Ningfang Mi. "SLA-aware data migration in a shared hybrid storage cluster." Cluster Computing 18, no. 4 (May 27, 2015): 1581–93. http://dx.doi.org/10.1007/s10586-015-0461-9.

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48

Kamran and Babar Nazir. "QoS-aware VM placement and migration for hybrid cloud infrastructure." Journal of Supercomputing 74, no. 9 (July 3, 2017): 4623–46. http://dx.doi.org/10.1007/s11227-017-2071-1.

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49

Westcott, Nathan P., Yi Lou, John F. Muth, and Muhammad N. Yousaf. "Patterned Hybrid Nanohole Array Surfaces for Cell Adhesion and Migration." Langmuir 25, no. 19 (October 6, 2009): 11236–38. http://dx.doi.org/10.1021/la9023234.

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50

Goodisman, Michael A. D., and Marjorie A. Asmussen. "Cytonuclear Theory for Haplodiploid Species and X-Linked Genes. I. Hardy-Weinberg Dynamics and Continent-Island, Hybrid Zone Models." Genetics 147, no. 1 (September 1, 1997): 321–38. http://dx.doi.org/10.1093/genetics/147.1.321.

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Abstract We develop models that describe the cytonuclear structure for either a cytoplasmic and nuclear marker in a haplodiploid species or a cytoplasmic and X-linked marker in a diploid species. Sex-specific disequilibrium statistics that summarize nonrandom cytonuclear associations in such systems are defined, and their basic Hardy-Weinberg dynamics and admixture formulae are delimited. We focus on the context of hybrid zones and develop continent-island models whereby individuals from two genetically differentiated source populations migrate into and mate within a single zone of admixture. We examine the effects of differential migration of the sexes, assortative mating by pure type females, and census time (relative to mating and migration), as well as special cases of random mating and migration subsumed under the general models. We show that pure type individuals and nonzero cytonuclear disequilibria can be maintained within a hybrid zone if there is continued migration from both source populations, and that females generally have a greater influence over these cytonuclear variables than males. The resulting theoretical framework can be used to estimate the rates of assortative mating and sex-specific gene flow in hybrid zones and other zones of admixture involving haplodiploid or sex-linked cytonuclear data.
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