Object Migration Research Articles

Nearshore Migration of Munitions and Canonical Objects Under Large-Scale Laboratory Forcing

A quantitative understanding of the migration of munitions and canonical objects in the nearshore is needed for the effective management of contaminated sites. Migrations of munitions with a density range of 2000 kg/m3 to 5720 kg/m3 were quantified in a large-scale wave flume. The forcing consisted of six cases of varying wave heights, periods, still water depths, and durations. The cross-shore profile, typical of natural sandy beaches, was sub-divided into swash, surf, and offshore zones. Overall, 2228 migration measurements were recorded with 16% and 84% of the migration observations classified as “motion” (net distance > 0.5 m) and “no motion” (net distance ≤ 0.5 m), respectively. The probability of munitions migration increased with proximity to the shoreline. There was a nearly equal probability of onshore or offshore migration in the swash zone. Migration in the surf zone tended to be offshore-directed (65%), while migration was onshore-dominant (65%) in the offshore zone. Migration in the offshore zone was preferentially onshore due to skewed waves over flat bathymetry. Less dense munitions in the offshore zone may have migrated offshore likely still related to the skewed nature of the wave profile causing transport in both directions through the majority of the wave phase. The largest migration distances occurred in the surf zone likely due to downslope gravity. Migration in the surf and swash zones is a balance between skewed/asymmetric forcing and downslope gravity, with downslope gravity tending to be pronounced provided the forcing is sufficient to initiate motion. An exception was sometimes observed in the swash zone where onshore forcing was sufficient to transport munitions to the seaward side of the berm where they became trapped in a bathymetric depression between the dune and berm. Relating overall migration (Lagrangian) to fixed hydrodynamic measurements (Eulerian) was ineffective. Parameters such as the Shields number, wave skewness, and wave asymmetry estimated from the closest measurement location were insufficient to predict migration. Large scatter in the migration data resulting from competing hydrodynamic, morphodynamic, and munitions response processes makes robust deterministic predictions with flow statistics and dimensionless numbers difficult.

Migration of compact objects in active galactic nucleus accretion disks

Migration of compact objects in active galactic nucleus accretion disks

Cultural mobilities and cultural heritage: concepts for an Asia-centric approach

This article sets out an original and exploratory framework for examining emerging concepts of cultural mobilities and heritage with a key focus on the infrastructure and spatialities of cultural mobilities in, of and through Asia—specifically China. To date, the scholarly analysis of mobilities has been dominated by the social sciences in relation to central themes of migration, national borders, crisis and transnational flows of objects and people. This paper seeks to expand the focus in mobilities discourses to humanities, not only to research how infrastructures and spatialities are shaped by culture and heritage but also to analyse cultural mobility through infrastructure and spatialities. We set out epistemic considerations for approaching cultural mobilities through an interdisciplinary lens that seeks to address heritage studies of diverse kinds, from environmental to religious to architectural. By centring Asian epistemes, the paper also challenges recognition and interpretation biases in the humanities and social sciences that continue to privilege Eurocentric hegemonies. Together, the co-authors examine: how Asian cultures operate through material and non-material infrastructures that defy singular location in geopolitical crossings and networks; how culture is mobilised in different ways through infrastructure; the entanglement of cultural heritage with political infrastructure and living practice as well as embedded values. The article discusses China’s Belt and Road Initiative (BRI), yoga as a cultural infrastructure between India and China, and the infrastructure and multiple spatialities of Chinatown as a evolving practice of cultural heritage.

Early Neolithic red-painted pottery from the Prandocin site, southern Poland. Indirect transfer in a technological context

The paper presents the results of specialized research on a small collection of artefacts of the Linear Pottery Culture in southern Poland. Among the 27 pottery fragments discovered at the Prandocin Site 1, a few painted fragments were identified. Such kind of painting style directly relates to the Želiezovce group of this culture in western Slovakia. Painted vessels are rarely found in the context of the Linear Pottery Culture in Lesser Poland (Małopolska), which is why special attention was given to raw material and technological studies of the ceramics. The study aimed to answer the question of whether the painted vessel was produced locally or if it representsevidence of direct migration of people, objects, or ideas from the areas of present-day western Slovakia at the turn of the 6th and 5th millennium BC.

An integrated approach to predicting the results of the identification of deposits in conditions of different tectonic confinement of objects

In this paper, for the objects of the Volga-Ural oil and gas province, confined to terrigenous and carbonate reservoirs, a study was conducted aimed at reducing risks and uncertainties when using geological and statistical models. Discriminant analysis revealed a number of inconsistencies in the grouping of objects according to the criterion of tectonic confinement, within which the migration of objects and their significant dispersion relative to the centroids of the groups were revealed. In order to level out the factors of nonlinearity and heterogeneity of processes occurring in disordered oil and gas systems, the boundaries of their stability are formed using four models using algorithms for solving the dual problem by the simplex method. Based on the data obtained, some features of the influence of parameters characterizing the geological and physical properties of productive formations and the fluids saturating them on the integrity and correctness of ideas about the degree of belonging of objects to certain grouping zones are determined. The results obtained make it possible, within the framework of proactive resource management, to create optimal or refine existing algorithms for finding the most suitable analog objects for use at newly discovered sites of the best engineering solutions and practices in the field of field development. Keywords: geological and statistical modeling; oil deposits; tectonic confinement of objects; geological complexes; development of oil fields; asset management of subsoil users.

Photo albums: deconstructing narratives of the self, migration, and movable memories

Photo albums, as personal and cultural material objects, are intertwined with ideas about identity and memory. At the same time, the importance of memory in how we shape and make sense of our place in the world that is enhanced through evocative objects such as personal photographic archives (ranging from traditional family albums, to selfies on mobile phones, and beyond) becomes more pronounced in the context of the Anthropocene era in which diverse and unequal global movability (e.g., displacement, border crossing, and migration) has become a defining feature of who we are. Connecting between anthropological studies of border-crossing and migration art, this project explores how in the absence of a photo album, alternative modes of visual archives tell the migrant stories of affective connections to family homeland the past and the present Focusing on specific examples from the burgeoning body of alternative visual artwork by contemporary migration artists in Europe and the US this paper examines how identity and otherness are entangled in an ongoing process of becoming and unraveling as sociocultural norms. Beginning with Appadurai’s observations on how migration of objects precipitates the experience of border crossing this paper looks at how migration art activism empowers modes of resistance to normative exclusionary discourses and current anti-migration practices.

Study of micro-scale flow characteristics under surface acoustic waves

As an effective tool for contactless manipulation of submicrometer scale objects, the controllability of acoustic streaming velocity and flow field morphology determines the accuracy of object migration and the completeness of three dimensional (3D) imaging. This paper proposes an equivalent acoustic streaming driving force model that is applicable to both two dimensional (2D) and 3D calculations and constructs a numerical method for submicrometer microsphere migration and rotation velocity in acoustic streaming. The results show that the relationship between the peripheral vortex size Lp/wc and the relative acoustic streaming velocity vas/vf satisfies Lp/wc = 0.125vas/vf0.36 under certain geometrical conditions. Reducing the spatial confinement and increasing the inter-vortex distance will increase the energy release efficiency, reduce the pressure gradient distribution and convective dissipation rates, increase the vortex intensity and radiation range, and consequently, increase the vortex characteristic size. In complex 3D vortex flow fields, suspended objects are affected by velocity distributions and exhibit motions such as cross-flow lines and rotation. For larger vortex structure sizes, full 3D imaging is more favorable due to the increased rotation speed and period of motion along the orbit of the submicrometer microspheres. This study helps us to reveal the modulation mechanism of acoustic streaming field flow characteristics, enrich the basic theory of alternating orbital motion and forces on objects in vortex structures, and provide guidance for acoustic flow-based contactless object manipulation.

Roots and routes: Literary archaeologies of British museums in contemporary Black and Asian poetry

This article explores some of the ways in which contemporary poets are tracing the roots and routes via which objects have come to, and continue to, reside within the walls of the museum. Focusing on poetic mediations of British Museums — on the Museum of London, the Manchester Museum, and the British Museum — the article analyses the works of Bernardine Evaristo, Inua Ellams, and Daljit Nagra. These poetic mediations can be read as literary archaeologies — as the concept is used by Evaristo — which speak to the histories, movements, and contemporaneous moments of colonial encounter that take place within the institution of the museum. The article moves to consider the way in which literary archaeologies might chart both a history of migration — looking at Bernardine Evaristo’s The Emperor’s Babe — and the migration of objects which are displayed in museums in Britain — with a focus on Inua Ellams’s poem Tusk — before going on to examine the museum as institution, as it is presented in Daljit Nagra’s collection British Museum. Setting these distinct, but complementary poetic interventions alongside one another, the article asks: how do these literary archaeologies respond to the histories and present-day stories told by — and about — British museums in the twenty-first century?

The object migration automata: its field, scope, applications, and future research challenges

The object migration automata: its field, scope, applications, and future research challenges

The migration trajectory of the Benin Bronzes

Abstract “The contributions in this series explore the migration experience using different kinds of “data.” Our contributors use works of art, novels, songs, and movies to explore many of the same questions they generally ask in their social scientific research. What additional insights come from using arts and culture to think through the issues that concern us? What can images and notes reveal that scholarly work cannot? We also invite original stories, poems, photo essays or art works. Ideas for contributions are wholeheartedly invited at any time. Please contact Emanuela Paoletti or Peggy Levitt”. The migration trajectory of the Benin Bronzes The colonial looting of objects across Africa, Asia and Latin America and their relocation to Western museums has created an enduring form of cultural and spiritual alienation for the survivors and descendants of imperial violence. Material heritage is not simply reducible to objects from which we derive historical, aesthetic or financial value, but rather have embedded cultural and political meanings that shift over time as their context, ownership and location change. The pieces themselves become embodiments of the values and priorities of those who lay claim to them. As such, attending to their transplantations becomes a practice of critical witness to the shifting of our relations to one another through migration over time. Looking at the migratory trajectories of imperial plunder helps us make sense of the meaning and value that is accrued through various social interactions in which they are embedded, ultimately providing insight into the relationship between the looters and the looted. There is analytical purchase in thinking about looted objects through the framework of migration as it provides a well-established language and lens through which to grapple with the cultural disillusionment and denudation that results when one is cast adrift from its moorings. Writing through the migration of objects thus helps us envision the ways in which people have been progressively alienated from their culture, but also provides an opportunity to think critically and creatively about reunification, restitution and restoration of cultures foregone.

Theoretical calculation and experimental verification of the vacuum thermal decomposition process of lunar silicon oxide

Thermal decomposition of oxides can be achieved at a lower temperature under vacuum condition. For In Situ Resource Utilization (ISRU), using the thermal decomposition method to obtain resources can avoid complex processing. This study, through thermodynamic equilibrium calculation found that oxides such as iron(II) oxide (FeO), and magnesium oxide (MgO), are easy to decompose. While oxides, such as silicon monoxide (SiO), titanium(II) oxide (TiO), etc., are difficult to decompose. Silicon dioxide (SiO2) is selected as the sample for the nanosecond laser experiment under a vacuum. Temperature simulation showed that a laser can give the sample high-temperature energy above 4700 K. Dynamic analysis showed that the sample undergoing complete plasma decomposition was the most thorough. The results of thermal decomposition of silicon monoxide is the most difficult to achieve. Under the conditions of 75 mJ laser pulse energy, 10−4 Pa initial vacuum, etc., the oxygen-silicon atom ratio of the products ranged from 1.74 to 0.12 and decreased with decreasing particle radius. Understanding the decomposition behavior of lunar surface oxides is crucial for the clean utilization of lunar surface resources. Moreover, it also provides a theoretical basis for high-temperature processing and element migration of airless objects.

Machine Learning for User Partitioning and Phase Shifters Design in RIS-Aided NOMA Networks

A novel reconfigurable intelligent surface (RIS) aided non-orthogonal multiple access (NOMA) downlink transmission framework is proposed. We formulate a long-term stochastic optimization problem that involves a joint optimization of NOMA user partitioning and RIS phase shifting, aiming at maximizing the sum data rate of the mobile users (MUs) in NOMA downlink networks. To solve the challenging joint optimization problem, we invoke a modified object migration automation (MOMA) algorithm to partition the users into equal-size clusters. To optimize the RIS phase shifting matrix, we propose a deep deterministic policy gradient (DDPG) algorithm to collaboratively control multiple reflecting elements (REs) of the RIS. Different from conventional training-then-testing processing, we consider a long-term self-adjusting learning model where the intelligent agent is capable of learning the optimal action for every given state through exploration and exploitation. Extensive numerical results demonstrate that: 1) The proposed RIS-aided NOMA downlink framework achieves enhanced sum data rate compared with the conventional orthogonal multiple access (OMA) framework. 2) The proposed DDPG algorithm is capable of learning a dynamic resource allocation policy in a long-term manner. 3) The performance of the proposed RIS-aided NOMA framework can be improved by increasing the granularity of the RIS phase shifts. The numerical results also show that increasing the number of reflecting elements (REs) is an efficient method to improve the sum data rate of the MUs.

The last migration trap of compact objects in AGN accretion disc

ABSTRACT Many black holes detected by the Laser Interferometer Gravitational-wave Observatory (LIGO) and the Virgo detectors are multiple times more massive than those in X-ray binaries. One possibility is that some binary black holes (BBHs) merge within a few Schwarzschild radii of a supermassive black hole (SMBH), so that the gravitational waves (GWs) are highly redshifted, causing the mass inferred from GW signals to appear higher than the real mass. The difficulty of this scenario lies in the delivery of BBH to such a small distance to a SMBH. Here we revisit the theoretical models for the migration of compact objects (COs) in the accretion discs of active galactic nuclei (AGNs). We find that when the accretion rate is high so that the disc is best described by the slim disc model, the COs in the disc could migrate to a radius close to the innermost stable circular orbit and be trapped there for the remaining lifetime of the AGN. The exact trapping radius coincides with the transition region between the sub- and super-Keplerian rotation of the slim disc. We call this region ‘the last migration trap’ because further inward, COs can no longer be trapped for a long time. We pinpoint the parameter space that could induce such a trap and we estimate that the last migration trap contributes a few per cent of the LIGO/Virgo events. Our result implies that a couple of BBHs discovered by LIGO/Virgo so far could have smaller intrinsic masses.

On utilizing the transitivity pursuit-enhanced object partitioning to optimize self-organizing lists-on-lists

In this paper, the Transitivity Pursuit-Enhanced Object Migration Automata (TPEOMA) is used to capture the dependence of elements in a hierarchical Singly-Linked-Lists on Singly-Linked-Lists (SLLs-on-SLLs) “adaptive” data structure. In doing so, the TPEOMA-enhanced hierarchical SLLs-on-SLLs learns the probability distribution of elements in a Non-stationary Environment. In this framework, we divide the hierarchical Singly-Linked-Lists on Singly-Linked-Lists (SLLs-on-SLLs) into an outer and inner list context. The inner-list context is itself a SLLs containing sub-elements of the list, while the outer-list context contains these sublist partitions as its primitive elements. The elements belonging to a particular sublist partition are determined using the TPEOMA reinforcement learning scheme from the theory of Learning Automata. The idea of Transitivity builds on the Pursuit concept that injects a noise filter into the EOMA to filter divergent queries from the Environment, thereby increasing the likelihood of training the Automaton to approximate the “true” distribution of the Environment. The Transitivity phenomenon can infer “dependent” query pairs from non-accessed elements in the transitivity relation based on the statistical distribution of the queried elements. The TPEOMA-enhanced hierarchical SLLs-on-SLLs schemes results in superior performances to the MTF and TR schemes as well as to the EOMA-enhanced hierarchical SLLs-on-SLLs schemes in NSEs.

Same family, different neighborhoods: Visible near-infrared (0.7–2.45 μm) spectral distinctions of D-type asteroids at different heliocentric distances

D-type asteroids represent a complex mystery related to the accretional history, composition, and dynamical migration of Outer Solar System objects. These spectrally featureless bodies have revealed few clues while raising many questions over four decades. D-types are dark, difficult to observe and perhaps contain unaltered primordial material. D-type asteroids are abundant in the outer belt, dominant in the Jupiter Trojans, and rare in the inner belt as well as near Earth space. Material spectrally similar to D-types is pervasive on other outer solar system bodies as well. The appearance of dark, spectrally red material in multiple classes of small bodies suggests some unknown geochemical and/or evolutionary connection(s) may exist between them. Our investigation focused on the visible near-infrared (VNIR) (0.7–2.45 μm) spectral distinctions of D-types based on heliocentric location. Twenty-five newly acquired spectra from NASA's Infrared Telescope Facility (IRTF) plus sixty-one IRTF VNIR spectra from the literature were combined into a single database and extensively analyzed with multiple orbital, observational, and spectral variables included in the examination. Twelve of the newly acquired spectra had not been imaged previously at IRTF.Pearson's correlation, simple and multiple regression, slope analysis, Monte Carlo modeling, as well as Principal Component Analysis (PCA) determined D-types show increased reddening with decreasing distance, with the segment from 1.5–2.45 μm, driving the overall trend for the full slope. Principal components show strong connection to the 0.7–1.35 μm slope and inclination of D-type Jupiter Trojans. Principal component combinations, magnitudes, and positive/negative direction relate strongly to both observed and derived differences in the D-type L4 and L5 Trojan population. The L5 population is less evolved spectrally and dynamically than L4 counterparts perhaps due to lower dynamical instabilities inside the L4 cloud.

Embedded Authorship: Thomas Carlyle, Ralph Waldo Emerson, and Nineteenth-Century “Transatlantic Bibliopoly”

Embedded Authorship: Thomas Carlyle, Ralph Waldo Emerson, and Nineteenth-Century “Transatlantic Bibliopoly” Tim Sommer (bio) I. Transatlantic Circulation between the “Two Englands” In 1870, Thomas Carlyle donated a large part of his private library to Harvard University in an effort to demonstrate his “gratitude to New England” for its encouraging reception of his writings over the previous three and a half decades.1 Carlyle’s American friend and one-time de facto literary agent Ralph Waldo Emerson had emphatically urged that Harvard, his own alma mater, would be “the right beneficiary, as being the mother real or adoptive of a great number of” Carlyle’s “lovers & readers in America.”2 The role of the intermediary in the scheme fell to Charles Eliot Norton, a fellow Harvard graduate and transatlantic man of letters who subsequently became the first editor of the Carlyle–Emerson correspondence. As a gesture at once material and diplomatic, the gift, Norton suggested, would further consolidate a “bond between the people of the two Englands.”3 Through this public recognition of the support of his American “lovers & readers,” Carlyle was paying back his debt in the form of books, the same currency in which he had originally incurred it. When the volumes from his shelves arrived in Cambridge, this transatlantic migration of material objects provided the concluding chapter to a long history of exchanges that had seen the circulation of manuscripts, proof sheets, individual copies, and whole cargoes of Carlyle’s and Emerson’s books between Britain and the United States. This sustained Anglo-American interaction had not only established a lasting bond between the two writers, but also contributed to the emergence of the interconnected print market of what Norton described as “the two Englands.” While the study of transatlantic literary relations has burgeoned over the past two decades, only a fraction of the critical output this scholarship has [End Page 352] generated is concerned with such specifically book historical contexts and with tackling the archival evidence required to answer the questions they raise.4 Still largely dominated by a history of ideas approach, the field has for a long time “neglected the material exchanges of transatlantic culture” in favor of inquiries into transnational influences and conceptual transfer.5 A simultaneous flourishing of research in the history of the book has, on the other hand, yielded similarly few instances of scholarship devoted to topics that genuinely cut across the boundaries of national book markets and regionally specific print cultures.6 In a recent survey of the nexus between these two scholarly traditions, Emily Todd has accordingly called for new work that engages both paradigms at the same time. “Transatlantic studies needs book history,” she argues, just as much as the latter needs the former.7 A subfield in which the history of the book has already made a contribution to our understanding of transatlantic literary culture is the study of nineteenth-century practices and discourses of reprinting. Catalyzed by Meredith McGill’s pioneering American Literature and the Culture of Reprinting, 1834–1853 (2003), research in this area has retraced in rich historical detail the manifold “routes” that texts were traveling in a complex international system of book and periodical publishing.8 Described as subject to decontextualization, reformatting, and decentralized dissemination, writing here tends to take precedence over authors, who often figure as the hapless victims of impersonal market structures that extend far beyond single individuals. Where reprinting is read as a practice that “disrupted the connections of books as human transmissions and de-valued the author’s text,” publication emerges “as an independently signifying act”—independent, that is, from authors as historical agents and participants in the publishing process.9 Looking at the close collaboration between Carlyle and Emerson and recovering the extent of their involvement with the print market reveals a different picture of the place of authors in nineteenth-century reprint culture. Confronted with a vibrant transatlantic market environment in which their writings from the late 1830s onwards were increasingly targeted by unauthorized reprinters, the two entered the fray and took up the roles of agents and editors to reassert their intellectual, legal, and economic authority over their texts. The transatlantic culture of print in...

Object-Level Memory Allocation and Migration in Hybrid Memory Systems

Hybrid memory systems composed of emerging non-volatile memory (NVM) and DRAM have drawn increasing attention in recent years. To fully exploit the advantages of both NVM and DRAM, a primary goal is to properly place application data on the hybrid memories. Previous studies have focused on page migration schemes to achieve higher performance and energy efficiency. However, those schemes all rely on online page access monitoring (costly), and data migration at the page granularity may cause additional overhead due to DRAM bandwidth contention and maintenance of cache/TLB consistency. In this article, we present Object-level memory Allocation and Migration (OAM) mechanisms for hybrid memory systems. OAM exploits a profiling tool to characterize objects’ memory access patterns at different execution phases of applications, and applies a performance/energy model to direct the initial static memory allocation and runtime dynamic object migration between NVM and DRAM. Based on our newly-developed programming interfaces for hybrid memory systems, application source codes can be automatically transformed via static code instrumentation. We evaluate OAM on an emulated hybrid memory system, and experimental results show that OAM can significantly reduce system energy-delay-product by 61 percent on average compared to a page-interleaving data placement scheme. It can also significantly reduce data migration overhead by 83 and 69 percent compared to the state-of-the-art page migration scheme CLOCK-DWF and 2PP, respectively, while improving application performance by up to 22 and 10 percent.

Az objektív túlterhelés rendészeti kihívásai az irreguláris migráció kezelésében

Following the principles of classical and modern migration theories, the study examines irregular migration at the Schengen external borders of Hungary using their analysis and the application of science theory methodology. The evaluation data identifies a migration feature that has not previously affected nations of Europe or other continents in its complexity as Hungary in 2014 and 2015. Based on the examination of the data and the interrelationship between the related elements I can describe a novel approach to the impact of migration, the objective overload of the activities of the policing agencies, which I describe as a new concept. In this paper I introduce a previously unrecorded migration typology element that explores the possibility of verifying the identity of a migrant. I compare the objective effects of migration overload on Hungarian policing organizations with those of mass migration events of the 20th century. The differences reinforce the discrepancy between the concepts of overload and mass migration. By describing the organizational surfaces characteristic of overload migration and its purpose, I also reinforce the novelty of the concept. The objective migration overload effects on policing organizations can be dealt in a meaningful way with a novel methodology, of which 5 elementsare presented in the paper.

Harnessing random low Reynolds number flow for net migration.

Random noise in low Reynolds number flow has rarely been used to obtain net migration of microscale objects. In this study, we numerically show that net migration of a microscale object can be extracted from random directional fluid forces in Stokes flow, by introducing deformability and inhomogeneous density into the object. We also developed a mathematical framework to describe the deformation-induced migration caused by noise. These results provide a basis for understanding the noise-induced migration of a microswimmer and are useful for harnessing energy from low Reynolds number flow.

On utilizing an enhanced object partitioning scheme to optimize self-organizing lists-on-lists

With the advent of “Big Data” as a field, in and of itself, there are at least three fundamentally new questions that have emerged, namely the Artificially Intelligence (AI)-based algorithms required, the hardware to process the data, and the methods to store and access the data efficiently. This paper (The work of the second author was partially supported by NSERC, the Natural Sciences and Engineering Council of Canada. We are very grateful for the feedback from the anonymous Referees of the original submission. Their input significantly improved the quality of this final version.) presents some novel schemes for the last of the three areas. There have been thousands of papers written regarding the algorithms themselves, and the hardware vendors are scrambling for the market share. However, the question of how to store, manage and access data, which has been central to the field of Computer Science, is even more pertinent in these days when megabytes of data are being generated every second. This paper considers the problem of minimizing the cost of retrieval using the most fundamental data structure, i.e., a Singly-Linked List (SLL). We consider a SLL in which the elements are accessed by a Non-stationary Environment (NSE) exhibiting the so-called “Locality of Reference”. We propose a solution to the problem by designing an “Adaptive” Data Structure (ADS), which is created by utilizing a composite of hierarchical data “sub”-structures to constitute the overall data structure (In this paper, the primitive data structure is the SLL. However, these concepts can be extended to more complicated data structures.). In this paper, we design hierarchical Lists-on-Lists (LOLs) by assembling a SLL into a hierarchical scheme that results in SLLs on SLLs (SLLs-on-SLLs) comprising of an outer-list and sublist contexts. The goal is that elements that are more likely to be accessed together are grouped within the same sub-context, while the sublists themselves are moved “en masse” towards the head of the list-context to minimize the overall access cost. This move is carried out by employing the “de-facto” list re-organization schemes, i.e., the Move-To-Front (MTF) and Transposition (TR) rules. To achieve the clustering of elements within the sublists, we invoke the Object Migration Automaton (OMA) family of reinforcement schemes from the theory of Learning Automata (LA). They capture the probabilistic dependence of the elements in the data structure, receiving query accesses from the Environment. We show that SLLs-on-SLLs augmented with the Enhanced OMA (EOMA) minimizes the retrieval cost for elements in NSEs, and are superior to the stand-alone MTF and TR schemes, and also superior to the OMA-augmented SLLs-on-SLLs operating in such Environments.