cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Continuous sensing and parameter estimation with the boundary time-crystal
Creators: name: Cabot, Albert
name: Carollo, Federico
name: Lesanovsky, Igor
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A boundary time-crystal is a quantum many-body system whose dynamics is governed by the competition between coherent driving and collective dissipation. It is composed of $N$ two-level systems and features a transition between a stationary phase and an oscillatory one. The fact that the system is open allows to continuously monitor its quantum trajectories and to analyze their dependence on parameter changes. This enables the realization of a sensing device whose performance we investigate as a function of the monitoring time $T$ and of the system size $N$. We find that the best achievable sensitivity is proportional to $\sqrt{T} N$, i.e., it follows the standard quantum limit in time and Heisenberg scaling in the particle number. This theoretical scaling can be achieved in the oscillatory time-crystal phase and it is rooted in emergent quantum correlations. The main challenge is, however, to tap this capability in a measurement protocol that is experimentally feasible. We demonstrate that the standard quantum limit can be surpassed by cascading two time-crystals, where the quantum trajectories of one time-crystal are used as input for the other one.
description: Last version before acceptance for publication
title: Relations of the Governor General and Council With the Governor and Council of Madras Under the Regulating Act of 1773.
Creators: name: Dasgupta, Amarprasad
Publisher: name: School of Oriental and African Studies, University of London
Year: 1929

description: The nominal control given by the Regulating Act to Bengal over the other presidencies in matters of peace and war resulted in constant friction between the superintending and subordinate presidencies. From 1775 to 1779 there was no marked dispute between the supreme council and Madras. In 1779 the transactions of the Madras government annoyed the Nizam, and the Bengal government intervened in order to prevent the Nizam from becoming an active enemy of the English, whereupon the Madras government taking advantage of the vague nature of the Regulating Act challenged the powers of Bengal to interfere. It has been shown that the intervention of Bengal was legal, and the attitude of Rumbold narrow. The Madras government maintained an attitude of opposition until the supreme council suspended their president, Whitehill, and established their superiority. This was aided by the fact that Haidar Ali was in the Carnatic and Madras totally dependent on Bengal for carrying on the war. Bengal could not retain this supremacy for long. Lord Macartney failed to win the friendship of the governor general in spite of his honest efforts. The quarrel between the presidencies was renewed. Hastings stretched his authority over Madras in proportion to his growing distrust of Macartney. Coote complicated the situation further. The personal factor made the normally difficult working of the Act absolutely impossible. Affairs reached the climax in 1783 and 1784 when Madras refused to obey the orders of Bengal which were in excess of legal powers, and to abide by unnecessary restrictions on their rights. Throughout, the justification for any illegal intervention of the supreme council lay in the fact that the responsibility for the general well-being rested on them. The experiment over ten years taught that harmonious relations between the presidencies were impossible under such a system. Accordingly larger powers of control were given to the supreme council by the India Act of 1784.
On the boundedness of Dunkl multipliers
Creators: name: Mukherjee, Suman
name: Thangavelu, Sundaram
Publisher: name: arXiv
Year: 2024
Subjects: subject: Functional Analysis (math.FA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B15, 42B25, 47G10, 47B34

description: In this article we use Littlewood-Paley-Stein theory to prove two versions of Dunkl multiplier theorem when the multiplier $ m $ satisfies a modified Hörmander condition. When $ m $ is radial we give a simple proof of a known result. For general $ m $ we prove that the Dunkl multiplier operator takes radial functions in $ L^p $ boundedly into $ L^p $ for all $ p \geq 2.$
description: 20 pages
Supplemental Material, Web_Appendix - Proactive Handling of Flight Overbooking: How to Reduce Negative eWOM and the Costs of Bumping Customers
Creators: name: Nazifi, Amin
name: Gelbrich, Katja
name: Yany Grégoire
name: Koch, Sebastian
name: El-Manstrly, Dahlia
name: Wirtz, Jochen
Publisher: name: SAGE Journals
Year: 2020
Subjects: subject: 150310 Organisation and Management Theory
subject: FOS: Economics and business
subject: 150402 Hospitality Management

description: Supplemental Material, Web_Appendix for Proactive Handling of Flight Overbooking: How to Reduce Negative eWOM and the Costs of Bumping Customers by Amin Nazifi, Katja Gelbrich, Yany Grégoire, Sebastian Koch, Dahlia El-Manstrly and Jochen Wirtz in Journal of Service Research
Fish Tracking, Counting, and Behaviour Analysis in Digital Aquaculture: A Comprehensive Survey
Creators: name: Cui, Meng
name: Liu, Xubo
name: Liu, Haohe
name: Zhao, Jinzheng
name: Li, Daoliang
name: Wang, Wenwu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Digital aquaculture leverages advanced technologies and data-driven methods, providing substantial benefits over traditional aquaculture practices. This paper presents a comprehensive review of three interconnected digital aquaculture tasks, namely, fish tracking, counting, and behaviour analysis, using a novel and unified approach. Unlike previous reviews which focused on single modalities or individual tasks, we analyse vision-based (i.e. image- and video-based), acoustic-based, and biosensor-based methods across all three tasks. We examine their advantages, limitations, and applications, highlighting recent advancements and identifying critical cross-cutting research gaps. The review also includes emerging ideas such as applying multi-task learning and large language models to address various aspects of fish monitoring, an approach not previously explored in aquaculture literature. We identify the major obstacles hindering research progress in this field, including the scarcity of comprehensive fish datasets and the lack of unified evaluation standards. To overcome the current limitations, we explore the potential of using emerging technologies such as multimodal data fusion and deep learning to improve the accuracy, robustness, and efficiency of integrated fish monitoring systems. In addition, we provide a summary of existing datasets available for fish tracking, counting, and behaviour analysis. This holistic perspective offers a roadmap for future research, emphasizing the need for comprehensive datasets and evaluation standards to facilitate meaningful comparisons between technologies and to promote their practical implementations in real-world settings.
Component exchange theory of trions
Creators: name: Van Tuan, Dinh
name: Dery, Hanan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Treating the trion problem as an effective two-body system with exciton and electron components, we identify component exchange as the reason leading to trion formation. This mechanism can be visualized as a hole that toggles back and forth between two electrons. The coined term component exchange is meant to inform that the repeated change of the electron component of the exciton originates from the exchange interaction. We develop a Bethe-Salpeter Equation for trions, showing that a bound trion state emerges if the electron and electron of the exciton are distinguishable particles (e.g., having opposite spins or residing in different valleys of the Brillouin zone). Similar to numerical techniques that treat the trion as a three-body problem, the trion Bethe-Salpeter Equation yields similar binding energy without using parameters beyond effective masses and dielectric constants.
description: 12 pages, 7 figures. We welcome your feedback. If we missed a citation to a RELEVANT paper, please mention a specific place in the text that we should add the citation
Systematic compactification of the two-channel Kondo model. II. Comparative study of scaling and universality
Creators: name: Ljepoja, Aleksandar
name: Shah, Nayana
name: Bolech, C. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Following up on the systematic compactification of the two-channel Kondo model (and its multichannel extensions; arXiv:2308.03569 (companion paper I)) and the demonstration of its validity over the past proposal of compactification, we resort to a study of scaling using Anderson's simple poor man's procedure to carry out a comparative study of these two and the original model. By doing so we unveil a universal agreement among the three models in how they flow upon scaling, and suggest the general limits of such a concordance. In this way we further elucidate the conditions under which the standard simplifications implicit in many bosonization-based mappings (particularly of quantum impurity models) can be used reliably, and when the consistent bosonization-debosonization approach is needed.
description: 19 pages, 9 figures
Lepton pair production in muon-nucleus scattering
Creators: name: Abbiendi, G.
name: Budassi, E.
name: Calame, C. M. Carloni
name: Gurgone, A.
name: Piccinini, F.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The MUonE experiment aims at providing a novel determination of the leading hadronic contribution to the muon anomalous magnetic moment through the study of elastic muon-electron scattering. Since the initial-state electrons are bound in a low-$Z$ atomic target, the interaction between the incoming muons and the nuclei is expected to be the main source of experimental background. In this article, we study the production of a real lepton pair from the muon-nucleus scattering, discussing its numerical impact in the MUonE kinematic configuration. The process is described as a scattering of a muon in an external Coulomb field with the addition of a form factor to describe the nuclear charge distribution. The calculation is implemented in the fully differential Monte Carlo event generator MESMER, without introducing any approximation on the angular variables.
description: 10 pages, 11 figures, 2 tables, version accepted for publication
title: Liang Shih-Chiu's View of the Nature and Social Function of Literature and His Assessment of Post-May 4th Writing.
Creators: name: Thomson, Peter Alexander Bremner
Publisher: name: School of Oriental and African Studies, University of London
Year: 1974

description: Liang Shih-ch'iu is a contradictory figure: a student-patriot who then advocated a thorough-going western orientation of Chinese literature; a somewhat reactionary member of a coterie led by a man dedicated to evolutionism; a staunch advocate of western classicism who associated closely with poets whose inspiration was largely drawn from western romanticism. I have developed this dissertation in three stages. In the first three chapters I have examined Liang's background. In Chapters 4 - 7 I have looked at what he had to say during the period 1927-34 about literature in general terms, modern Chinese literature as a whole, and certain specific ideas (and presentations of those ideas) in particular. In the last three chapters I have endeavoured to answer three slightly difficult, but interesting, questions which immediately arise from a reading of Liang's commentaries: that of his true identity; that of his motives; and that of his significance. My secondary purpose has been at intervals to try to trace the source of Liang's thinking, and then, in establishing his identity, also to uncover the closest association that I can find. A third, and also subsidiary, purpose has been to comment briefly on the impression that Liang Shih-ch'iu makes on the reader, both as an advocate and as a person. Approached in this way the contradictions outlined above do not disappear, nor are they wholly explained. They do however become easier to understand.
Systematic compactification of the two-channel Kondo model. III. Extended field-theoretic renormalization group analysis
Creators: name: Ljepoja, Aleksandar
name: Bolech, C. J.
name: Shah, Nayana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We carry out a field-theoretical renormalization group procedure based on the Callan-Symanzik equation to calculate the detailed flow for the (multi) two-channel Kondo model and its compactified versions. In doing so, we go beyond the universal terms in the beta function we obtained using poor man's scaling (see arXiv:2308.03590 (companion paper II)) and culminate our analysis of how the compactified versions of the model fare against the original one. Among other results, we explore the large-channel-number limit and extend our considerations to the finite temperature crossover region. Moreover, we gain insights into the contradistinction between the consistent vs. conventional bosonization-debosonization formalisms, thereby advancing our understanding on multiple fronts. In particular, we make use of renormalization-flow arguments to further justify the consistent refermionization of the parallel Kondo interaction we presented earlier (see arXiv:2308.03569 (companion paper I))
description: 28 pages, 14 figures, 2 tables
Supplemental Material, CERTIFICATE-OF-ENGLISH-EDITING - Automatic Planning for Nasopharyngeal Carcinoma Based on Progressive Optimization in RayStation Treatment Planning System
Creators: name: Yang, Yiwei
name: Shao, Kainan
name: Zhang, Jie
name: Chen, Ming
name: Chen, Yuanyuan
name: Shan, Guoping
Publisher: name: SAGE Journals
Year: 2020
Subjects: Oncology and Carcinogenesis not elsewhere classified
Radiology and Organ Imaging
Biochemistry

description: Supplemental Material, CERTIFICATE-OF-ENGLISH-EDITING for Automatic Planning for Nasopharyngeal Carcinoma Based on Progressive Optimization in RayStation Treatment Planning System by Yiwei Yang, Kainan Shao, Jie Zhang, Ming Chen, Yuanyuan Chen and Guoping Shan in Technology in Cancer Research & Treatment
title: An Indonesian Society and Its Universe: A Study of the Bugis of South Sulawesi (Celebes) and Their Role Within a Wider Social and Economic System.
Creators: name: Lineton, Jacqueline Andrew
Publisher: name: School of Oriental and African Studies, University of London
Year: 1975

description: The Bugis are a "centrifugal" society, with a tendency constantly to expand outwards from their homeland in South Sulawesi into other widely scattered regions of the Malay world. This expansion takes place through the ability of the Bugis to exploit resources which have previously been neglected or under-utilised by the indigenous society. The present study examines in general terms, and in historical perspective, the peculiar ecological niches occupied by the Bugis within the Indonesian archipelago; small-scale interisland trade and pioneer settlement. To illuminate the process of Bugie expansion, a detailed analysis is made of Bugis society in a village in South Sulawesi - its kinship system, status distinctions, political institutions and economy - and factors conducive to outward migration are examined. Political unrest in Sulawesi has led to waves of emigration to Sumatra and elsewhere, while at other times there has been a steady outward movement due to economic factors. The nobility's monopoly of political power is also seen as a factor encouraging the emigration of ambitious individuals; these have often been the pioneers who started chains of migration to new areas. The history of Bugis settlement on the Sumatra coast, and the links maintained with Sulawesi, are examined. Migration to Sumatra is shown to provide opportunities for economic and political advancement which are absent or limited in the Bugis homeland. It is concluded that this migration is significant not only for the development of the area of settlement, but may also be necessary for the continued functioning of many of the institutions of Bugis society, in particular the system of social stratification and political domination by an aristocratic elite. As a result of the long tradition of movement to other parts of Indonesia and formerly to Malaya, the boundaries of the Bugis social universe extend far beyond the limits of his village or region to encompass the entire Malay world.
THEMIS 2.0: A self-consistent model for dust extinction, emission, and polarisation
Creators: name: Ysard, Nathalie
name: Jones, Anthony Peter
name: Guillet, Vincent
name: Demyk, Karine
name: Decleir, Marjorie
name: Verstraete, Laurent
name: Choubani, Ilyes
name: Miville-Deschênes, Marc-Antoine
name: Fanciullo, Lapo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observations in emission, extinction, and polarisation have at least partially invalidated most of the astronomical standard grain models for the diffuse ISM. Moreover, lab measurements on interstellar silicate analogues have shown differences with the optical properties used in these standard models. To address these issues, our objective is twofold: (i) to update the optical properties of silicates and (ii) to develop the THEMIS dust model to allow the calculation of polarised extinction and emission. Based on optical constants measured in the lab for amorphous silicates and on observational constraints in mid-IR extinction and X-ray scattering, we defined new optical constants for the THEMIS silicates. Absorption and scattering efficiencies for spheroidal grains were then derived with the discrete dipole approximation. These new optical properties make it possible to explain the dust emission and extinction, both total and polarised. The model is not yet pushed to its limits since it does not require the perfect alignment of all grains to explain the observations and it therefore has the potential to accommodate the highest polarisation levels inferred from extinction measures. Moreover, the dispersion of the optical properties of the different lab silicates naturally explain the variations in both the total and polarised emission and extinction observed in the diffuse ISM. A single, invariant model calibrated on one single set of observations is obsolete for explaining contemporary observations. We are proposing a completely flexible dust model based entirely on lab measurements that has the potential to make major advances in understanding the nature of ISM grains and how they evolve as a function of their environment. Even if challenging, this is also relevant for future missions that will aim to perform precise measurements of the CMB spectral distortions and polarisation.
description: Accepted for publication by A&A ; abstract modified to match the arxiv standard ; typo corrected on 19/01/2024 in Tab. 3 ; units corrected on 07/02/2024 in Figs. 9 and C.2
Supply chain protocoling
Creators: name: Wu, Baolin
name: Dewan, Mohammed
name: Li
name: Yang, Yun
Publisher: name: Swinburne
Year: 2024

description: Faced with the challenges of current e-business powered competitive environments, enterprises now find that it is not adequate to manage their own businesses but also the supply chain. They must be involved in managing the network of the upstream that provides the input, as well as the network of the downstream responsible for the output to the customer. Managing the supply chain has become one of the important issues in today's e-business as the participants span across the network among which the processes and services are independently designed and configured. It is required that a rich variety of interactions must be made available to enable and support the information flows. While several network protocols are currently operating, however, a supply chain protocol owns its specific properties to the business operation that is not supported by the current network protocols. In this paper, we investigate the needs of the supply chain protocol, and propose a novel approach for designing the protocol that brings the business processes and services together to support the supply chain management.
A full approximation scheme multilevel method for nonlinear variational inequalities
Creators: name: Bueler, Ed
name: Farrell, Patrick E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65K15, 35M86, 90C33

description: We present the full approximation scheme constraint decomposition (FASCD) multilevel method for solving variational inequalities (VIs). FASCD is a common extension of both the full approximation scheme (FAS) multigrid technique for nonlinear partial differential equations, due to A.~Brandt, and the constraint decomposition (CD) method introduced by X.-C.~Tai for VIs arising in optimization. We extend the CD idea by exploiting the telescoping nature of certain function space subset decompositions arising from multilevel mesh hierarchies. When a reduced-space (active set) Newton method is applied as a smoother, with work proportional to the number of unknowns on a given mesh level, FASCD V-cycles exhibit nearly mesh-independent convergence rates, and full multigrid cycles are optimal solvers. The example problems include differential operators which are symmetric linear, nonsymmetric linear, and nonlinear, in unilateral and bilateral VI problems.
description: 25 pages, 9 figures
New insights into the nature of the $Λ(1380)$ and $Λ(1405)$ resonances away from the SU(3) limit
Creators: name: Guo, Feng-Kun
name: Kamiya, Yuki
name: Mai, Maxim
name: Meißner, Ulf-G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Starting from the SU(3) limit, we consider the nature of the dynamically generated resonances $Λ(1380)$, $Λ(1405)$ and $Λ(1680)$ as the pion and kaon masses are tuned to their physical values. We show that the accidental symmetry of the two octets due to the leading order Weinberg-Tomozawa term is broken by the next-to-leading order terms. Most interestingly, we observe an interchange of the two trajectories of the $Λ(1380)$ and the $Λ(1405)$ away from the SU(3) limit at next-to-leading order. This remarkable phenomenon can be investigated using lattice QCD calculations that start from the SU(3) limit.
description: We have updated the notation compared to the journal version. No calculation or results are changed by this, 11 pages, 4 figures
Agent-based approach towards ontology refinement in virtual enterprises
Creators: name: Li, Li
name: Yang, Yun
name: Wu, Baolin
Publisher: name: Swinburne
Year: 2024

description: The vision of ontology research has recently drawn considerable attention, both from academia and industry. One of the essential research issues with ontology is how to describe changes during its evolving cycle, especially in virtual enterprises which exist as a temporary network o€ geographically distributed partners that assemble to achieve a goal. Ontology refinement is a crucial component in ontology evolution. Description logics are very useful for defining and maintaining ontologies, including ontology consistency checking. In this paper, a taxonomy is adopted to describe ontologies with an intuitive ontology definition formula. Based on the ontology definition, a novel agent-based approach is presented which deals with ontology refinement at run-time in virtual enterprises. We demonstrate the method with a running example by using the JADE platform.
Low-Frequency Earthquakes Downdip of Deep Slow Slip Beneath the North Island of New Zealand
Creators: name: Aden-Antoniów, F
name: Frank, WB
name: Chamberlain, Calum
name: Townend, John
name: Wallace, LM
name: Bannister, S
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2024
Subjects: classificationCode: 3705
subject: Geology
subject: FOS: Earth and related environmental sciences
classificationCode: 3706
subject: Geophysics
classificationCode: 37
subject: Earth sciences

description: We report the first catalog of low-frequency earthquakes in the Hikurangi subduction zone, located beneath the Kaimanawa Range of the North Island at 50 km depth, downdip of regularly recurring (every 4–5 years) deep M7 slow slip events. To systematically detect low-frequency earthquakes within the regional continuous seismic data, we utilized a matched-filter approach with template waveforms derived from previous observations of tectonic tremor. We built our catalog of 36 low-frequency earthquake sources, that produced almost 21,000 events over more than a decade, with two matched-filter search iterations. In each iteration, the detections were gathered into families and their coherent waveforms processed and stacked to extract high-quality waveforms, allowing us to pick seismic phase arrivals to locate the low-frequency earthquakes. We highlight three characteristic features to validate that our detected events are indeed low-frequency earthquakes: the eponymous deficit of high frequencies in their seismic waveforms, the episodic swarms of activity that define their activity through time, and their location at the plate boundary with a double-couple source mechanism and geometry consistent with the subduction interface. Considering the observed low-frequency earthquakes' relationship to neighboring slow slip, we observe the event swarms to occur much more frequently than the M7 slow slip events located just updip. Similar to other deep low-frequency earthquakes in other subduction zones, we suggest that this characteristic clustering in time is driven by more frequent, smaller slow slip events that are not clearly observable at the surface.
Supplemental_Material - Can Statin Treatment Reduce the Risk of Hepatocellular Carcinoma? A Systematic Review and Meta-Analysis
Creators: name: Chang, Yue
name: Liu, Qinyu
name: Zhou, Zidong
name: Ding, Yuping
name: Yang, Mei
name: Xu, Wei
name: Chen, Kai
name: Zhang, Qing
name: Wang, Zhenguo
name: Li, Hai
Publisher: name: SAGE Journals
Year: 2020
Subjects: Oncology and Carcinogenesis not elsewhere classified
Radiology and Organ Imaging
Biochemistry

description: Supplemental_Material for Can Statin Treatment Reduce the Risk of Hepatocellular Carcinoma? A Systematic Review and Meta-Analysis by Yue Chang, Qinyu Liu, Zidong Zhou, Yuping Ding, Mei Yang, Wei Xu, Kai Chen, Qing Zhang, Zhenguo Wang and Hai Li in Technology in Cancer Research & Treatment
Electrically controlled photonic circuits of field-induced dipolaritons with huge nonlinearities
Creators: name: Liran, Dror
name: Hu, Jiaqi
name: Lydick, Nathanial
name: Deng, Hui
name: Pfeiffer, Loren
name: Rapaport, Ronen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electrically controlled photonic circuits hold promise for information technologies with greatly improved energy efficiency and quantum information processing capabilities. However, weak nonlinearity and electrical response of typical photonic materials have been two critical challenges. Therefore hybrid electronic-photonic systems, such as semiconductor exciton-polaritons, have been intensely investigated for their potential to allow higher nonlinearity and electrical control, with limited success so far. Here we demonstrate an electrically-gated waveguide architecture for dipolar-polaritons that allows enhanced and electrically-controllable polariton nonlinearities, enabling an electrically-tuned reflecting switch (mirror) and transistor of the dipolar-polaritons. The polariton transistor displays blockade and anti-blockade by compressing a dilute dipolar-polariton pulse exhibiting very strong dipolar interactions. The large nonlinearities are explained using a simple density-dependent polarization field that very effectively screens the external electric field, with an order of magnitude enhancement of the nonlinearities as compared to fixed dipoles. We project that a quantum blockade at the single polariton level is feasible in such a device.
description: 12 pages, 6 figures, 1 table
title: Northern Thai Peasant Society: A Case Study of Jural and Political Structures at the Village Level and Their Twentieth Century Transformations.
Creators: name: Turton, Andrew
Publisher: name: School of Oriental and African Studies, University of London
Year: 1975

description: This is a study of the peasant sector of Northern Thailand. It attempts to describe and theorize political and jural aspects of village communities of predominantly wet rice agricultural producers. Three main approaches are used concurrently. First there is the productiom of a body of data, mostly assembled during fieldwork (1969-1070) conducted by the method of individual social-anthropological participant observation. Empirical observation focused mainly on a cluster of three villages (population c. 3,000), within which more detailed surveys were made, and beyond which research was also extended. Secondly a historical method is used. Two chronological periods are established for the fieldwork locality, approximately: 1910-1950 and 1950-1970. Changes between the two periods are recorded and the periods compared. Thirdly the historical materialist theory of modes of production is used to conceptualize a sector of a total social formation (society of Thailand) both synchronically and diachronically. These three approaches are discussed in the Introduction. In Part One village level social units and relations are first considered in their economic aspects, in particular changing social relations of production and the emergence of class differences within the peasantry. In Part Two the same empirical units are analyzed further in terms of their political and jural aspects, and ideological forms. Some emphasis is given to relations of exchange between households, the principal units of production, (including ritual exchanges, marriage, membership of matrilineal desert groups); to the position of ritually qualified elders; and to local communities, especially as defined by certain ideological structures: in spirit cults, and more notably in the congregaticxis of collectively owned Buddhist temples. Village level structures are set, empirically and theoretically, in the context of the lower levels of the state bureaucracy, especially village and district administration. Part Three considers In detail disputes and trouble cases (mainly among villagers and between villagers and the state), changing types and causes, and changing modes of settlement: self-help, ritual, and Juridical. The roles of elders, village headmen, and state officials (district police, provincial courts) in dispute settlement and in criminal cases are analysed. A number of cases is recorded, some extensively. Part Four presents the more abstract elements of peasant ideology, especially in its aspect as corpus juris, but also as religious representations and ideological forms of social relations.
The Influence of Jc(B) and n-Value on Magnetization Loss and Dynamic Loss in REBCO Coated Conductors
Creators: name: Sun, Yueming
name: Badcock, Rodney
name: Jiang, Zhenan
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2024
Subjects: classificationCode: 51
subject: Physical sciences
subject: FOS: Physical sciences
classificationCode: 40
subject: Engineering
classificationCode: 5104
subject: Condensed matter physics
classificationCode: 4008
subject: Electrical engineering

description: REBCO coated conductors (CCs) carry dc currents under ac magnetic fields in many high temperature superconducting (HTS) applications, such as field windings of rotating machines, flux pumps and persistent current switches. In such operating conditions, magnetization loss due to the shielding currents, and dynamic loss arising from the dynamic resistance in CCs, are critical issues which need to be taken into considerations for the machine design. In this work, magnetization loss and dynamic resistance/loss in a 4-mm-wide REBCO CC were calculated using the 2D H-formulation finite element method (FEM) based on the E-J power law of the CC. Constant Jc, and field-dependent Jc(B) are used in the E-J power law. The influence of n-values on both loss behaviors is also studied when n-values vary from 10 to 100. Our results show that magnetization loss increases with increasing n-value at low magnetic fields while decreases at high magnetic fields. Such opposite n-dependence is attributed to the changing saturation region of the shielding currents when the current-reversal region shrinks. On the contrary, dynamic loss increases with increasing n-value due to the extended dc current flowing region. Furthermore, the high dc current level has a strong influence on the n-dependence of magnetization loss.
Designing Robots to Help Women
Creators: name: Cooney, Martin
name: Klasén, Lena
name: Alonso-Fernandez, Fernando
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Robots are being designed to help people in an increasing variety of settings--but seemingly little attention has been given so far to the specific needs of women, who represent roughly half of the world's population but are highly underrepresented in robotics. Here we used a speculative prototyping approach to explore this expansive design space: First, we identified some potential challenges of interest, including crimes and illnesses that disproportionately affect women, as well as potential opportunities for designers, which were visualized in five sketches. Then, one of the sketched scenarios was further explored by developing a prototype, of a robotic helper drone equipped with computer vision to detect hidden cameras that could be used to spy on women. While object detection introduced some errors, hidden cameras were identified with a reasonable accuracy of 80% (Intersection over Union (IoU) score: 0.40). Our aim is that the identified challenges and opportunities could help spark discussion and inspire designers, toward realizing a safer, more inclusive future through responsible use of technology.
description: 10 pages, Accepted Version of a Published Conference Paper in 14th Scandinavian Conference on Artificial Intelligence (SCAI 2024): AI for a better society, June 10-11, 2024, J\"onk\"oping, Sweden, Link\"oping Electronic Conference Proceedings (ECP) ISSN: 1650-3740 (CC BY 4.0 License)
Semantic mapping with multi-agent systems
Creators: name: Li, Li
name: Wu, Baolin
name: Yang, Yun
Publisher: name: Swinburne
Year: 2024

description: This paper introduces a multi-agent system (MAS) architecture and a relevant algorithm for multiple agents to manage and deploy ontologies in a dynamic environment. Firstly, an ontology description is given followed by a three level conceptual model which shows the background of our work. Then a MAS architecture is presented. Finally, we demonstrate how this approach enables ontology evolution and integration by using the JADE platform.
CodeTailor: LLM-Powered Personalized Parsons Puzzles for Engaging Support While Learning Programming
Creators: name: Hou, Xinying
name: Wu, Zihan
name: Wang, Xu
name: Ericson, Barbara J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Learning to program can be challenging, and providing high-quality and timely support at scale is hard. Generative AI and its products, like ChatGPT, can create a solution for most intro-level programming problems. However, students might use these tools to just generate code for them, resulting in reduced engagement and limited learning. In this paper, we present CodeTailor, a system that leverages a large language model (LLM) to provide personalized help to students while still encouraging cognitive engagement. CodeTailor provides a personalized Parsons puzzle to support struggling students. In a Parsons puzzle, students place mixed-up code blocks in the correct order to solve a problem. A technical evaluation with previous incorrect student code snippets demonstrated that CodeTailor could deliver high-quality (correct, personalized, and concise) Parsons puzzles based on their incorrect code. We conducted a within-subjects study with 18 novice programmers. Participants perceived CodeTailor as more engaging than just receiving an LLM-generated solution (the baseline condition). In addition, participants applied more supported elements from the scaffolded practice to the posttest when using CodeTailor than baseline. Overall, most participants preferred using CodeTailor versus just receiving the LLM-generated code for learning. Qualitative observations and interviews also provided evidence for the benefits of CodeTailor, including thinking more about solution construction, fostering continuity in learning, promoting reflection, and boosting confidence. We suggest future design ideas to facilitate active learning opportunities with generative AI techniques.
description: Accepted to the Eleventh ACM Conference on Learning @ Scale (L@S 24) as a full paper
Sam Kean. The Violinist’s Thumb and Other Lost Tales of Love, War, and Genius, as Written by our Genetic Code. (New York: Little, Brown & Company 2012)
Creators: name: Ferrara, Enzo
Publisher: name: Università degli Studi di Torino
Year: 2016

description: Visions for Sustainability, No 6 (2016): (in press)
Renormalized Internally-Contracted Multireference Coupled Cluster with Perturbative Triples
Creators: name: Feldmann, Robin
name: Reiher, Markus
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work, we combine the many-body formulation of the internally contracted multireference coupled cluster (ic-MRCC) method with Evangelista's multireference formulation of the driven similarity renormalization group (DSRG). The DSRG method can be viewed as a unitary multireference coupled cluster theory, which renormalizes the amplitudes based on a flow equation approach to eliminate numerical instabilities. We extend this approach by demonstrating that the unitary flow equation approach can be adapted for nonunitary transformations, rationalizing the renormalization of ic-MRCC amplitudes. We denote the new approach, the renormalized ic-MRCC (ric-MRCC) method. To achieve high accuracy with a reasonable computational cost, we introduce a new approximation to the Baker-Campbell-Hausdorff expansion. We fully consider the linear commutator while approximating the quadratic commutator, for which we neglect specific contractions involving amplitudes with active indices. Moreover, we introduce approximate perturbative triples to obtain the ric-MRCCSD[T] method. We demonstrate the accuracy of our approaches in comparison to advanced multireference methods for the potential energy curves of H8, F2, H2O, N2, and Cr2. Additionally, we show that ric-MRCCSD and ric-MRCSSD[T] match the accuracy of CCSD(T) for evaluating spectroscopic constants and of full configuration interaction energies for a set of small molecules.
description: 60 pages, 5 figures, 6 tables
Nonequilibrium transition between dissipative time crystals
Creators: name: Cabot, Albert
name: Giorgi, Gianluca
name: Zambrini, Roberta
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show a dissipative phase transition in a driven nonlinear quantum oscillator in which a discrete time-translation symmetry is spontaneously broken in two different ways. The corresponding regimes display either discrete or incommensurate time-crystal order, which we analyze numerically and analytically beyond the classical limit addressing observable dynamics, phenomenology in different (laboratory and rotating) frames, Liouvillian spectral features, and quantum fluctuations. Via an effective semiclassical description, we show that phase diffusion dominates in the incommensurate time crystal (or continuous time crystal in the rotating frame), which manifests as a band of eigenmodes with a lifetime growing linearly with the mean-field excitation number. Instead, in the discrete time crystal phase, the leading fluctuation process corresponds to quantum activation with a single mode that has an exponentially growing lifetime. Interestingly, the transition between these two regimes manifests itself already in the quantum regime as a spectral singularity, namely as an exceptional point mediating between phase diffusion and quantum activation. Finally, we discuss this transition between different time-crystal orders in the context of synchronization phenomena.
description: Last version before acceptance for publication
HyCoT: A Transformer-Based Autoencoder for Hyperspectral Image Compression
Creators: name: Fuchs, Martin Hermann Paul
name: Rasti, Behnood
name: Demir, Begüm
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The development of learning-based hyperspectral image (HSI) compression models has recently attracted significant interest. Existing models predominantly utilize convolutional filters, which capture only local dependencies. Furthermore,they often incur high training costs and exhibit substantial computational complexity. To address these limitations, in this paper we propose Hyperspectral Compression Transformer (HyCoT) that is a transformer-based autoencoder for pixelwise HSI compression. Additionally, we apply a simple yet effective training set reduction approach to accelerate the training process. Experimental results on the HySpecNet-11k dataset demonstrate that HyCoT surpasses the state of the art across various compression ratios by over 1 dB of PSNR with significantly reduced computational requirements. Our code and pre-trained weights are publicly available at https://git.tu-berlin.de/rsim/hycot .
description: Accepted at 14th IEEE GRSS Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS), 2024
In situ observation of chemistry in Rydberg molecules within a coherent solvent
Creators: name: Engel, Felix
name: Tiwari, Shiva Kant
name: Pfau, Tilman
name: Wüster, Sebastian
name: Meinert, Florian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We often infer the state of systems in nature indirectly, for example, in high-energy physics by the interaction of particles with an ambient medium. We adapt this principle to energies $9$ orders of magnitude smaller, to classify the final state of exotic molecules after internal conversion of their electronic state, through their interaction with an ambient quantum fluid, a Bose-Einstein condensate (BEC). The BEC is the ground-state of a million bosonic atoms near zero temperature, and a single embedded ultra-long range Rydberg molecule can coherently excite waves in this fluid, which carry telltale signatures of its dynamics. Bond lengths exceeding a micrometer allow us to observe the molecular fingerprint on the BEC in-situ, via optical microscopy. Interpreting images in comparison with simulations strongly suggests that the molecular electronic state rapidly converts from the initially excited S and D orbitals to a much more complex molecular state (called "trilobite''), marked by a maximally localized electron. This internal conversion liberates energy, such that one expects final-state particles to move rapidly through the medium, which is however ruled out by comparing experiment and simulations. The molecule thus must strongly decelerate in the medium, for which we propose a plausible mechanism. Our experiment demonstrates a medium that facilitates and records an electronic state change of embedded exotic molecules in ultra-cold chemistry, with sufficient sensitivity to constrain velocities of final-state particles.
description: 12 pages and 11 figures
An Experimental Comparison of Partitioning Strategies for Distributed Graph Neural Network Training
Creators: name: Merkel, Nikolai
name: Stoll, Daniel
name: Mayer, Ruben
name: Jacobsen, Hans-Arno
Publisher: name: arXiv
Year: 2023
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recently, graph neural networks (GNNs) have gained much attention as a growing area of deep learning capable of learning on graph-structured data. However, the computational and memory requirements for training GNNs on large-scale graphs make it necessary to distribute the training. A prerequisite for distributed GNN training is to partition the input graph into smaller parts that are distributed among multiple machines of a compute cluster. Although graph partitioning has been studied with regard to graph analytics and graph databases, its effect on GNN training performance is largely unexplored. As a consequence, it is unclear whether investing computational efforts into high-quality graph partitioning would pay off in GNN training scenarios.
 In this paper, we study the effectiveness of graph partitioning for distributed GNN training. Our study aims to understand how different factors such as GNN parameters, mini-batch size, graph type, features size, and scale-out factor influence the effectiveness of graph partitioning. We conduct experiments with two different GNN systems using vertex and edge partitioning. We found that high-quality graph partitioning is a very effective optimization to speed up GNN training and to reduce memory consumption. Furthermore, our results show that invested partitioning time can quickly be amortized by reduced GNN training time, making it a relevant optimization for most GNN scenarios. Compared to research on distributed graph processing, our study reveals that graph partitioning plays an even more significant role in distributed GNN training, which motivates further research on the graph partitioning problem.
description: To be published in Proceedings of the 28th International Conference on Extending Database Technology (EDBT), 25th, March-28th March, 2025
PS_Supplemental_Material_Table4_contd – Supplemental material for Political Veganism: An Empirical Analysis of Vegans’ Motives, Aims, and Political Engagement
Creators: name: Kalte, Deborah
Publisher: name: SAGE Journals
Year: 2020
Subjects: subject: 160607 International Relations
subject: FOS: Political science

description: Supplemental material, PS_Supplemental_Material_Table4_contd for Political Veganism: An Empirical Analysis of Vegans’ Motives, Aims, and Political Engagement by Deborah Kalte in Political Studies