cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Immigrants in their Homeland: The Marginalized Sabahan Bajau Laut or Sea Gipsies
Creators: name: Ating, Rashid
name: Kim T. Lalisan, April
name: Reyes, Victor
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390107
subject: Humanities and social sciences curriculum and pedagogy (excl. economics, business and management)
classificationCode: 460105
subject: Applications in social sciences and education

description: The demolition of the community’s settlement of the Bajau Laut known as sea gypsies, at Semporna, Sabah, was heavily circulated in social media June this year. This action captured the attention of many people, both local and international. It is worth noting that there are contradicting statements provided by government officials (from the state of Sabah itself) and by the bystanders (members of the general public) on this issue. The contradicting statementsbegan when the bystanders claimed that government officials gave the directive to burn the settlement. On the other side of the coin, government officials claim that the community of Bajau Laut themselves have burned their own houses to gather sympathy from the public. These contradicting statements between the government of Sabah and the general publiccaused the Bajau Laut issue to remain far from a resolution. In this era, there are instances where distinguishing between what is true and what is not, becomes challenging. Being squeezed into their land, this community has struggled to assert their national identity and human rights, causing them to have impoverished lives. This short storytelling shares the authors’ opinion as a Sabahan from the Bajau Ubian tribe that have a relative from the slump/a residential village built near the sea, which has slightly better condition compared to the Bajau Laut. To avoid biases and to be critical, as the authors have already stayed in Kuala Lumpur for the last eight years since 2016, this storytelling was complemented by the experience of the author’s corresponding colleague, a non-Sabahan from Johor, being transferred to Lahad Datu to serve as a nurse for two years.
The renormalization flow of the hierarchical Anderson model at weak disorder
Creators: name: Metz, F. L.
name: Leuzzi, L.
name: Parisi, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the flow of the renormalized model parameters obtained from a sequence of simple transformations of the 1D Anderson model with long-range hierarchical hopping. Combining numerical results with a perturbative approach for the flow equations, we identify three qualitatively different regimes at weak disorder. For a sufficiently fast decay of the hopping energy, the Cauchy distribution is the only stable fixed-point of the flow equations, whereas for sufficiently slowly decaying hopping energy the renormalized parameters flow to a delta peak fixed-point distribution. In an intermediate range of the hopping decay, both fixed-point distributions are stable and the stationary solution is determined by the initial configuration of the random parameters. We present results for the critical decay of the hopping energy separating the different regimes.
description: 8 pages, 6 figures
A coletânea de textos clandestinos - constituição de um objeto de pesquisa.pdf
Creators: name: Sardeiro, Leandro De Araújo
Publisher: name: figshare
Year: 2020
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: 220210 History of Philosophy

description: Toda a discussão sobre a assim chamada “Literatura clandestina” está fundada sobre a descoberta feita em 1912 nas bibliotecas parisienses por Gustave Lanson de um corpus de manuscritos que circulavam na Europa muito antes da época das Luzes e que já continham todas as discussões dos seus textos mais importantes. O presente trabalho pretende apresentar uma discussão sobre as “coletâneas” como parte privilegiada de tal corpus, de modo a colocar em evidência as suas especificidades e papel na difusão das ideias filosóficas do Setecentos.
Wilson lines and their Laurent positivity
Creators: name: Ishibashi, Tsukasa
name: Oya, Hironori
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 13F60, 14M35, 22E46

description: For a marked surface $Σ$ and a semisimple algebraic group $G$ of adjoint type, we study the Wilson line morphism $g_{[c]}:\mathcal{P}_{G,Σ} \to G$ associated with the homotopy class of an arc $c$ connecting boundary intervals of $Σ$, which is the comparison element of pinnings via parallel-transport. The matrix coefficients of the Wilson lines give a generating set of the function algebra $\mathcal{O}(\mathcal{P}_{G,Σ})$ when $Σ$ has no punctures. The Wilson lines have the multiplicative nature with respect to the gluing morphisms introduced by Goncharov--Shen [GS19], hence can be decomposed into triangular pieces with respect to a given ideal triangulation of $Σ$. We show that the matrix coefficients $c_{f,v}^V(g_{[c]})$ give Laurent polynomials with positive integral coefficients in the Goncharov--Shen coordinate system associated with any decorated triangulation of $Σ$, for suitable $f$ and $v$.
description: 58 pages, 13 figures. v3: A major revision shortening the length of the paper by removing minor sections; modifying the presentations of Wilson lines as stack morphisms. v4: Minor corrections of typos. Journal version
Where in the World are You? Geolocation and Language Identification in Twitter
Creators: name: Graham, Mark
name: Hale, Scott A.
name: Gaffney, Devin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The movements of ideas and content between locations and languages are unquestionably crucial concerns to researchers of the information age, and Twitter has emerged as a central, global platform on which hundreds of millions of people share knowledge and information. A variety of research has attempted to harvest locational and linguistic metadata from tweets in order to understand important questions related to the 300 million tweets that flow through the platform each day. However, much of this work is carried out with only limited understandings of how best to work with the spatial and linguistic contexts in which the information was produced. Furthermore, standard, well-accepted practices have yet to emerge. As such, this paper studies the reliability of key methods used to determine language and location of content in Twitter. It compares three automated language identification packages to Twitter's user interface language setting and to a human coding of languages in order to identify common sources of disagreement. The paper also demonstrates that in many cases user-entered profile locations differ from the physical locations users are actually tweeting from. As such, these open-ended, user-generated, profile locations cannot be used as useful proxies for the physical locations from which information is published to Twitter.
Chemical constraints on the contribution of Population III stars to cosmic reionization
Creators: name: Kulkarni, Girish
name: Hennawi, Joseph F.
name: Rollinde, Emmanuel
name: Vangioni, Elisabeth
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recent studies have highlighted that galaxies at z = 6-8 fall short of producing enough ionizing photons to reionize the IGM, and suggest that Population III stars could resolve this tension, because their harder spectra can produce ~10x more ionizing photons than Population II. But this argument depends critically on the duration of the Population III era, and because Population III stars form from pristine gas, in turn depends on the rate of galactic enrichment. We use a semi-analytic model of galaxy formation which tracks galactic chemical evolution, to gauge the impact of Population III stars on reionization. Population III SNe produce distinct metal abundances, and we argue that the duration of the Population III era can be constrained by precise relative abundance measurements in high-z damped Lyα absorbers (DLAs), which provide a chemical record of past star-formation. We find that a single generation of Population III stars can self-enrich galaxies above the critical metallicity Zcrit=10^-4 Zsun for the Population III-to-II transition, on a very short timescale of ~10^6 yr, owing to the large metal yields and short lifetimes of Population III stars. This subsequently terminates the Population III era, hence they contribute >~ 50% of the ionizing photons only for z >~ 30, and at z=10 contribute <1%. The Population III contribution can be increased by delaying metal mixing into the ISM. However comparing the resulting metal abundance pattern to existing measurements in z
description: 12 pages, 5 figures; Submitted to ApJ; Comments welcome
Chemotactic self-caging in active emulsions
Creators: name: Hokmabad, Babak Vajdi
name: Saha, Suropriya
name: Agudo-Canalejo, Jaime
name: Golestanian, Ramin
name: Maass, Corinna C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A common feature of biological self-organization is how active agents communicate with each other or their environment via chemical signaling. Such communications, mediated by self-generated chemical gradients, have consequences for both individual motility strategies and collective migration patterns. Here, in a purely physicochemical system, we use self-propelling droplets as a model for chemically active particles that modify their environment by leaving chemical footprints, which act as chemorepulsive signals to other droplets. We analyze this communication mechanism quantitatively both on the scale of individual agent-trail collisions as well as on the collective scale where droplets actively remodel their environment while adapting their dynamics to that evolving chemical landscape. We show in experiment and simulation how these interactions cause a transient dynamical arrest in active emulsions where swimmers are caged between each other's trails of secreted chemicals. Our findings provide new insight into the collective dynamics of chemically active particles and yield principles for predicting how negative autochemotaxis shapes their navigation strategy.
"HEPData_workspaces.tar.gz" of "Search for bottom-squark pair production with the ATLAS detector in final states containing Higgs bosons, $b$-jets and missing transverse momentum"
Creators: name: ATLAS Collaboration
Publisher: name: HEPData
Year: 2021

description: Archive of full likelihoods in the HistFactory JSON format described in ATL-PHYS-PUB-2019-029 Provided are 3 statiscal models labeled RegionA RegionB and RegionC respectively each in their own sub-directory. For each model the background-only model is found i the file named 'BkgOnly.json' For each model a set of patches for various signal points is provided
description: No data abstract available.
Distance $4$ curves on closed surfaces of arbitrary genus
Creators: name: Mahanta, Kuwari
name: Palaparthi, Sreekrishna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M60, 20F65, 20F67

description: Let $S_g$ denote a closed, orientable surface of genus $g \geq 2$ and $\mathcal{C}(S_g)$ be the associated curve complex. The mapping class group of $S_g$, $Mod(S_g)$ acts on $\mathcal{C}(S_g)$ by isometries. Since Dehn twists about certain curves generate $Mod(S_g)$, one can ask how Dehn twists move specific vertices in $\mathcal{C}(S_g)$ away from themselves. We show that if two curves represent vertices at a distance $3$ in $\mathcal{C}(S_g)$ then the Dehn twist of one curve about another yields two vertices at distance $4$. This produces many tractable examples of distance $4$ vertices in $\mathcal{C}(S_g)$. We also show that the minimum intersection number of any two curves at a distance $4$ on $S_g$ is at most $(2g-1)^2$.
description: 16 pages, 20 figures
"ANA-SUSY-2018-31.cxx" of "Search for bottom-squark pair production with the ATLAS detector in final states containing Higgs bosons, $b$-jets and missing transverse momentum"
Creators: name: ATLAS Collaboration
Publisher: name: HEPData
Year: 2021

description: Truth level code to compute acceptance for all signal regions using the SimpleAnalysis framework
description: No data abstract available.
Analysis and control of agreement and disagreement opinion cascades
Creators: name: Franci, Alessio
name: Bizyaeva, Anastasia
name: Park, Shinkyu
name: Leonard, Naomi Ehrich
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We introduce and analyze a continuous time and state-space model of opinion cascades on networks of large numbers of agents that form opinions about two or more options. By leveraging our recent results on the emergence of agreement and disagreement states, we introduce novel tools to analyze and control agreement and disagreement opinion cascades. New notions of agreement and disagreement centrality, which depend only on network structure, are shown to be key to characterizing the nonlinear behavior of agreement and disagreement opinion formation and cascades. Our results are relevant for the analysis and control of opinion cascades in real-world networks, including biological, social and artificial networks, and for the design of opinion-forming behaviors in robotic swarms. We illustrate an application of our model to a multi-robot task-allocation problem and discuss extensions and future directions opened by our modeling framework.
Dynamics of coronal rain and descending plasma blobs in solar prominences: I. Fully ionised case
Creators: name: Oliver, R.
name: Soler, R.
name: Terradas, J.
name: Zaqarashvili, T. V.
name: Khodachenko, M. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of active regions and limb prominences often show cold, dense blobs descending with an acceleration smaller than that of free fall. The dynamics of these condensations falling in the solar corona is investigated in this paper using a simple fully ionised plasma model. We find that the presence of a heavy condensation gives rise to a dynamical rearrangement of the coronal pressure that results in the formation of a large pressure gradient that opposes gravity. Eventually this pressure gradient becomes so large that the blob acceleration vanishes or even points upwards. Then, the blob descent is characterised by an initial acceleration phase followed by an essentially constant velocity phase. These two stages can be identified in published time-distance diagrams of coronal rain events. Both the duration of the first stage and the velocity attained by the blob increase for larger values of the ratio of blob to coronal density, for larger blob mass, and for smaller coronal temperature. Dense blobs are characterised by a detectable density growth (up to 60% in our calculations) and by a steepening of the density in their lower part, that could lead to the formation of a shock. They also emit sound waves that could be detected as small intensity changes with periods of the order of 100 s and lasting between a few and about ten periods. Finally, the curvature of the falling path is only relevant when a very dense blob falls along inclined magnetic field lines.
"SbMB_SLHAs.tar.gz" of "Search for bottom-squark pair production with the ATLAS detector in final states containing Higgs bosons, $b$-jets and missing transverse momentum"
Creators: name: ATLAS Collaboration
Publisher: name: HEPData
Year: 2021

description: slha files for the 3 baseline signal points used in the analysis for regions A,B,C
description: No data abstract available.
Control of Agreement and Disagreement Cascades with Distributed Inputs
Creators: name: Bizyaeva, Anastasia
name: Sorochkin, Timothy
name: Franci, Alessio
name: Leonard, Naomi Ehrich
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Multiagent Systems (cs.MA)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: For a group of autonomous communicating agents, the ability to distinguish a meaningful input from disturbance, and come to collective agreement or disagreement in response to that input, is paramount for carrying out coordinated objectives. In this work we study how a cascade of opinion formation spreads through a group of networked decision-makers in response to a distributed input signal. Using a nonlinear opinion dynamics model with dynamic feedback modulation of an attention parameter, we show how the triggering of an opinion cascade and the collective decision itself depend on both the distributed input and the node agreement and disagreement centrality, determined by the spectral properties of the network graph. We further show how the attention dynamics introduce an implicit threshold that distinguishes between distributed inputs that trigger cascades and ones that are rejected as disturbance.
description: 7 pages, 4 figures
SHORT TERM EFFECT OF PURSED LIP BREATHING TECHNIQUE IN STABLE PATIENTS OF CHRONIC OBSTRUCTIVE PULMONARY DISEASES (COPD)
Creators: name: Lajwanti Lalwani
name: Mishra, Gyanshankar
name: Gaidhane, Abhay
name: Zahiruddin Quazi
Publisher: name: figshare
Year: 2020
Subjects: subject: 110317 Physiotherapy
subject: FOS: Clinical medicine
subject: 110602 Exercise Physiology
subject: FOS: Health sciences
subject: 110203 Respiratory Diseases
subject: Medicine

description: Introduction- Pursed lip breathing (PBL) is spontaneously adopted by COPD patients to relieve dyspnea. A systematic review done by S. E. Roberts et al concluded that studies should be done to find the short-term benefits of PBL that helps in clinical improvement in patient’s status. So with this background the study was undertaken to find the effect of PLB in stable COPD patients for shorter time on saturation levels, dyspnea and PEFR Readings.

Methodology- IEC approval from institute and written informed consent was signed by thesubjects. This is an Experimental study and included 56 stable COPD patients were
included in the study with inclusive criteria of Diagnosed case of Stable COPD Patients on
regular medication and visiting respiratory OPD and IPD of tertiary care center. Exclusive criteria was Patients of acute exacerbation, Smokers, Patients on O2 therapy, Patients not willing to participate. Baseline parameters were recorded and then PLB was taught and performed for 6 days then on 6th day post intervention reading were taken and parameters
were compared to baseline.

Results- Short term effect of pursed lip breathing in COPD was analyzed. Mean age of the patients was 60.83± 7.43 years. The study population comprised of 37 (66.07%) male patients and 19(33.93%) female patients. Short term effect pursed lip breathing statistically significantly improves saturation, dyspnea and PEFR in stable COPD patients.
Conclusion- Short term effect pursed lip breathing improves saturation, dyspnea and PEFR in stable COPD patients.
Understanding and Modeling Passive-Negative Feedback for Short-video Sequential Recommendation
Creators: name: Pan, Yunzhu
name: Gao, Chen
name: Chang, Jianxin
name: Niu, Yanan
name: Song, Yang
name: Gai, Kun
name: Jin, Depeng
name: Li, Yong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Sequential recommendation is one of the most important tasks in recommender systems, which aims to recommend the next interacted item with historical behaviors as input. Traditional sequential recommendation always mainly considers the collected positive feedback such as click, purchase, etc. However, in short-video platforms such as TikTok, video viewing behavior may not always represent positive feedback. Specifically, the videos are played automatically, and users passively receive the recommended videos. In this new scenario, users passively express negative feedback by skipping over videos they do not like, which provides valuable information about their preferences. Different from the negative feedback studied in traditional recommender systems, this passive-negative feedback can reflect users' interests and serve as an important supervision signal in extracting users' preferences. Therefore, it is essential to carefully design and utilize it in this novel recommendation scenario. In this work, we first conduct analyses based on a large-scale real-world short-video behavior dataset and illustrate the significance of leveraging passive feedback. We then propose a novel method that deploys the sub-interest encoder, which incorporates positive feedback and passive-negative feedback as supervision signals to learn the user's current active sub-interest. Moreover, we introduce an adaptive fusion layer to integrate various sub-interests effectively. To enhance the robustness of our model, we then introduce a multi-task learning module to simultaneously optimize two kinds of feedback -- passive-negative feedback and traditional randomly-sampled negative feedback. The experiments on two large-scale datasets verify that the proposed method can significantly outperform state-of-the-art approaches. The code is released at https://github.com/tsinghua-fib-lab/RecSys2023-SINE.
description: Accepted by RecSys'23
Initial conditions for inflation and the energy scale of SUSY-breaking from the (nearly) gaussian sky
Creators: name: Alvarez-Gaume, Luis
name: Gomez, Cesar
name: Jimenez, Raul
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show how general initial conditions for small field inflation can be obtained in multi-field models. This is provided by non-linear angular friction terms in the inflaton that provide a phase of non-slow-roll inflation before the slow-roll inflation phase. This in turn provides a natural mechanism to star small-field slow-roll at nearly zero velocity for arbitrary initial conditions. We also show that there is a relation between the scale of SUSY breaking sqrt (f) and the amount of non-gaussian fluctuations generated by the inflaton. In particular, we show that in the local non-gaussian shape there exists the relation sqrt (f) = 10^{13} GeV sqrt (f_NL). With current observational limits from Planck, and adopting the minimum amount of non-gaussian fluctuations allowed by single-field inflation, this provides a very tight constraint for the SUSY breaking energy scale sqrt (f) = 3-7 x 10^{13} GeV at 95% confidence. Further limits, or detection, from next year's Planck polarisation data will further tighten this constraint by a factor of two. We highlight that the key to our approach is to identify the inflaton with the scalar component of the goldstino superfield. This superfield is universal and implements the dynamics of SUSY breaking as well as superconformal breaking.
description: Invited talk at the BW2013 meeting
The exact solution of the diffusion trapping model of defect profiling with variable energy positrons
Creators: name: Stephanovich, V. A.
name: Dryzek, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report an exact analytical solution of so-called positron diffusion trapping model. This model have been widely used for the treatment of the experimental data for defect profiling of the adjoin surface layer using the variable energy positron (VEP) beam technique. Hovewer, up to now this model could be treated only numerically with so-called VEPFIT program. The explicit form of the solutions is obtained for the realistic cases when defect profile is described by a discreet step-like function and continuous exponential-like function. Our solutions allow to derive the analytical expressions for typical positron annihilation characteristics including the positron lifetime spectrum. Latter quantity could be measured using the pulsed, slow positron beam. Our analytical results are in good coincidence with both the VEPFIT numerics and experimental data. The presented solutions are easily generalizable for defect profiles of other shapes and can be well used for much more precise treatment of above experimental data.
description: 13 pages, 7 PDF figures
Exciton condensation in strongly correlated electron bilayers
Creators: name: Rademaker, Louk
name: Brink, Jeroen van den
name: Zaanen, Jan
name: Hilgenkamp, Hans
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We studied the possibility of exciton condensation in Mott insulating bilayers. In these strongly correlated systems an exciton is the bound state of a double occupied and empty site. In the strong coupling limit the exciton acts as a hard-core boson. Its physics are captured by the exciton t-J model, containing an effective XXZ model describing the exciton dynamics only. Using numerical simulations and analytical mean field theory we constructed the ground state phase diagram. Three homogeneous phases can be distinguished: the antiferromagnet, the exciton checkerboard crystal and the exciton superfluid. For most model parameters, however, we predict macroscopic phase separation between these phases. The exciton superfluid exists only for large exciton hopping energy. Additionally we studied the collective modes and susceptibilities of the three phases. In the superfluid phase we find the striking feature that the bandwidth of the spin-triplet excitations, potentially detectable by resonant inelastic x-ray scattering (RIXS), is proportional to the superfluid density. The superfluid phase mode is visible in the charge susceptibility, measurable by RIXS or electron energy loss spectroscopy (EELS).
description: 21 pages, 14 figures
Trade-offs in phenotypic noise synchronize emergent topology to actively enhance transport in microbial environments
Creators: name: Dhar, Jayabrata
name: Thai, Anh L. P.
name: Ghoshal, Arkajyoti
name: Giomi, Luca
name: Sengupta, Anupam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Phenotypic noise underpins homeostasis and fitness of individual cells. Yet, the extent to which noise shapes cell-to-population properties in microbial active matter remains poorly understood. By quantifying variability in confluent \textit{E.coli} strains, we catalogue noise across different phenotypic traits. The noise, measured over different temperatures serving as proxy for cellular activity, spanned more than two orders of magnitude. The maximum noise was associated with the cell geometry and the critical colony area at the onset of mono-to-multilayer transition (MTMT), while the lower bound was set by the critical time of the MTMT. Our results, supported by a hydrodynamic model, suggest that a trade-off between the noise in the cell geometry and the growth rate can lead to the self-regulation of the MTMT timing. The MTMT cascades synchronous emergence of hydrodynamic fields, actively enhancing the micro-environmental transport. Our results highlight how interplay of phenotypic noise triggers emergent deterministic properties, and reveal the role of multifield topology--of the colony structure and hydrodynamics--to insulate confluent systems from the inherent noise associated with natural cell-environment settings.
description: 24 pages, 15 figures
Lifetime policy reuse and the importance of task capacity
Creators: name: Bossens, David M.
name: Sobey, Adam J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: A long-standing challenge in artificial intelligence is lifelong reinforcement learning, where learners are given many tasks in sequence and must transfer knowledge between tasks while avoiding catastrophic forgetting. Policy reuse and other multi-policy reinforcement learning techniques can learn multiple tasks but may generate many policies. This paper presents two novel contributions, namely 1) Lifetime Policy Reuse, a model-agnostic policy reuse algorithm that avoids generating many policies by optimising a fixed number of near-optimal policies through a combination of policy optimisation and adaptive policy selection; and 2) the task capacity, a measure for the maximal number of tasks that a policy can accurately solve. Comparing two state-of-the-art base-learners, the results demonstrate the importance of Lifetime Policy Reuse and task capacity based pre-selection on an 18-task partially observable Pacman domain and a Cartpole domain of up to 125 tasks.
A high-precision mechanical absolute-rotation sensor
Creators: name: Venkateswara, Krishna
name: Hagedorn, Charles A.
name: Turner, Matthew D.
name: Arp, Trevor
name: Gundlach, Jens H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We have developed a mechanical absolute-rotation sensor capable of resolving ground rotation angle of less than 1 nrad$/\sqrt{\text{Hz}}$ above $30$ mHz and 0.2 nrad$/\sqrt{\text{Hz}}$ above $100$ mHz about a single horizontal axis. The device consists of a meter-scale beam balance, suspended by a pair of flexures, with a resonance frequency of 10.8 mHz. The center of mass is located 3 $μ$m above the pivot, giving an excellent horizontal displacement rejection of better than $3\times10^{-5}$ rad/m. The angle of the beam is read out optically using a high-sensitivity autocollimator. We have also built a tiltmeter with better than 1 nrad$/\sqrt{\text{Hz}}$ sensitivity above 30 mHz. Co-located measurements using the two instruments allowed us to distinguish between background rotation signal at low frequencies and intrinsic instrument noise. The rotation sensor is useful for rotational seismology and for rejecting background rotation signal from seismometers in experiments demanding high levels of seismic isolation, such as Advanced LIGO.
Pedestrian Attribute Recognition in Video Surveillance Scenarios Based on View-attribute Attention Localization
Creators: name: Chen, Weichen
name: Yu, Xinyi
name: Ou, Linlin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Pedestrian attribute recognition in surveillance scenarios is still a challenging task due to the inaccurate localization of specific attributes. In this paper, we propose a novel view-attribute localization method based on attention (VALA), which utilizes view information to guide the recognition process to focus on specific attributes and attention mechanism to localize specific attribute-corresponding areas. Concretely, view information is leveraged by the view prediction branch to generate four view weights that represent the confidences for attributes from different views. View weights are then delivered back to compose specific view-attributes, which will participate and supervise deep feature extraction. In order to explore the spatial location of a view-attribute, regional attention is introduced to aggregate spatial information and encode inter-channel dependencies of the view feature. Subsequently, a fine attentive attribute-specific region is localized, and regional weights for the view-attribute from different spatial locations are gained by the regional attention. The final view-attribute recognition outcome is obtained by combining the view weights with the regional weights. Experiments on three wide datasets (RAP, RAPv2, and PA-100K) demonstrate the effectiveness of our approach compared with state-of-the-art methods.
title: An Examination of Sport Commitment of Windsurfers
Creators: name: Jeon, Jung-Hwan
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2007

description: Much research over the past decade has been conducted for understanding the commitment of sport participants. While many different subjects have been examined, there is no study which examines windsurfers through the Sport Commitment Model (SCM) (Scanlan, Carpenter, Schmidt, Simons, & Keeler, 1993). The present study examined the sport commitment of windsurfers and the relationship between windsurfing commitment and the following variables: demographic characteristics, participation frequency, and purchase behavior.

The survey instrument included items from the SCM Questionnaire (Scanlan, Carpneter, et al., 1993) and the Modified SCM questionnaire (Casper, 2004). A total of 173 questionnaires were distributed during two windsurfing events: I) the Frisco Woods WindFest, and 2) the Windsurfing Enthusiasts of Tidewater (WET) Spring Regatta. A total of 139 usable questionnaires were returned for a response rate of 82%.

Factor analysis revealed two factors with items being classified as either: 1) intrinsic motivation (windsurfing enjoyment, involvement opportunities, and personal investments) or 2) extrinsic motivation (social constraints and social support). While the extrinsic factor explained 18% of the variance, the intrinsic factor explained 32% of the variance. Regression analysis showed that the intrinsic factor was a stronger predictor of windsurfing commitment (β = .825, p < .01). Windsurfing commitment was associated with participation frequency (β = .400, p < .01) and purchase behavior (β = .269, p < .01). Windsurfing commitment, participation frequency, and purchase behavior were analyzed by various demographic variables. There were no differences based on age; however, gender, income, and skill level differences were evident for windsurfing commitment. Significant difference among skill level groups was also apparent for participation frequency. There were differences based on income and skill level for purchase behavior.
Calogero-Moser spaces and the invariants of two matrices of degree 3
Creators: name: Normatov, Zafar
name: Turdibaev, Rustam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16R30, 13A50, 14R20, 14L30

description: We find a minimal set of generators for the coordinate ring of Calogero-Moser space $\mathcal{C}_3$ and the algebraic relations among them explicitly. We give a new presentation for the algebra of $3\times3$ invariant matrices involving the defining relations of $\mathbb{C}[\mathcal{C}_3]$. We find an explicit description of the commuting variety of $3\times3$ matrices and its orbits under the action of the affine Cremona group.
Designing optoelectronic properties by on-surface synthesis: formation and electronic structure of an iron-terpyridine macromolecular complex
Creators: name: Schiffrin, Agustin
name: Capsoni, Martina
name: Farahi, Gelareh
name: Wang, Chen-Guang
name: Krull, Cornelius
name: Castelli, Marina
name: Roussy, Tanya S.
name: Cochrane, Katherine A.
name: Yin, Yuefeng
name: Medhekar, Nikhil
name: Shaw, Adam Q.
name: Ji, Wei
name: Burke, Sarah A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Supramolecular chemistry protocols applied on surfaces offer compelling avenues for atomic scale control over organic-inorganic interface structures. In this approach, adsorbate-surface interactions and two-dimensional confinement can lead to morphologies and properties that differ dramatically from those achieved via conventional synthetic approaches. Here, we describe the bottom-up, on-surface synthesis of one-dimensional coordination nanostructures based on an iron (Fe)-terpyridine (tpy) interaction borrowed from functional metal-organic complexes used in photovoltaic and catalytic applications. Thermally activated diffusion of sequentially deposited ligands and metal atoms, and intra-ligand conformational changes, lead to Fe-tpy coordination and formation of these nanochains. Low-temperature Scanning Tunneling Microscopy and Density Functional Theory were used to elucidate the atomic-scale morphology of the system, providing evidence of a linear tri-Fe linkage between facing, coplanar tpy groups. Scanning Tunneling Spectroscopy reveals highest occupied orbitals with dominant contributions from states located at the Fe node, and ligand states that mostly contribute to the lowest unoccupied orbitals. This electronic structure yields potential for hosting photo-induced metal-to-ligand charge transfer in the visible/near-infrared. The formation of this unusual tpy/tri-Fe/tpy coordination motif has not been observed for wet chemistry synthesis methods, and is mediated by the bottom-up on-surface approach used here.
"InclSS3L_likelihoods.tgz" of "Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb$^{-1}$ of data collected with the ATLAS detector"
Creators: name: ATLAS Collaboration
Publisher: name: HEPData
Year: 2021

description: Archive of full likelihoods in the HistFactory JSON format described in ATL-PHYS-PUB-2019-029. Five statistical models Rpc2L0b, Rpc2L1b, Rpc2L2b, Rpc3LSS1b, and Rpv2L are provided. For each model the background-only model is found in the file named '[model]_BkgOnly.json', while a set of patches for various signal points is provided in the file named '[model]_patchset.json'.
description: A search for supersymmetric partners of gluons and quarks is presented, involving signatures with jets and either two isolated leptons ($e$ or $\mu$) with the same electric charge, or at least three isolated leptons. The analysis also relies on $b$-tagged jets or missing transverse momentum to extend its sensitivity. A data sample of proton--proton collisions at $\sqrt{s}$ = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to a total integrated luminosity of 139 fb$^{-1}$, is used for the search. No significant excess over the Standard Model expectation is observed. The results are interpreted in simplified supersymmetric models featuring both $R$-parity conservation and $R$-parity violation, extending the exclusion limits from previous searches up to 1600 GeV for gluino masses and 750 GeV bottom and top squark masses in these scenarios.
Review of Contemporary Energy Harvesting Techniques and Their Feasibility in Wireless Geophones
Creators: name: Iqbal, Naveed
name: Masood, Mudassir
name: Nasir, Ali
name: Qureshi, Khurram Karim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Energy harvesting converts ambient energy to electrical energy providing numerous opportunities to realize wireless sensors. Seismic exploration is a prime avenue to benefit from it as energy harvesting equipped geophones would relieve the burden of cables which account for the biggest chunk of exploration cost and equipment weight. Since numerous energies are abundantly available in seismic fields, these can be harvested to power up geophones. However, due to the random and intermittent nature of the harvested energy, it is important that geophones must be equipped to tap from several energy sources for a stable operation. It may involve some initial installation cost but in the long run, it is cost-effective and beneficial as the sources for energy harvesting are available naturally. Extensive research has been carried out in recent years to harvest energies from various sources. However, there has not been a thorough investigation of utilizing these developments in the seismic context. In this survey, a comprehensive literature review is provided on the research progress in energy harvesting methods suitable for direct adaptation in geophones. Specifically, the focus is on small form factor energy harvesting circuits and systems capable of harvesting energy from wind, sun, vibrations, temperature difference, and radio frequencies. Furthermore, case studies are presented to assess the suitability of the studied energy harvesting methods. Finally, a design of energy harvesting equipped geophone is also proposed.
Statistical Inference of 1D Persistent Nonlinear Time Series and Application to Predictions
Creators: name: Kassel, Johannes A.
name: Kantz, Holger
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We introduce a method for reconstructing macroscopic models of one-dimensional stochastic processes with long-range correlations from sparsely sampled time series by combining fractional calculus and discrete-time Langevin equations. The method is illustrated for the ARFIMA(1,d,0) process and a nonlinear auto-regressive toy model with multiplicative noise. We reconstruct a model for daily mean temperature data recorded at Potsdam (Germany) and use it to predict the first frost date by computing the mean first passage time of the reconstructed process and the zero degree Celsius temperature line, illustrating the potential of long-memory models for predictions in the subseasonal-to-seasonal range.
description: 7 pages, 6 Figures
"slhas.tar.gz" of "Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at $\sqrt{s}=$ 13 TeV"
Creators: name: CMS Collaboration
Publisher: name: HEPData
Year: 2019

description: SLHA files for benchmark GMSB models with $m_\tilde{g} = 1000, 2400, 3000$ GeV and $c\tau_{0} = 1, 10, 30$ m
description: A search for long-lived particles decaying to displaced, nonprompt jets and missing transverse momentum is presented. The data sample corresponds to an integrated luminosity of 137 fb$^{-1}$ of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC in 2016--2018. Candidate signal events containing nonprompt jets are identified using the timing capabilities of the CMS electromagnetic calorimeter. The results of the search are consistent with the background prediction and are interpreted using a gauge-mediated supersymmetry breaking reference model with a gluino next-to-lightest supersymmetric particle. In this model, gluino masses up to 2100, 2500, and 1900 GeV are excluded at $95\%$ confidence level for proper decay lengths of 0.3, 1, and 100 m, respectively. These are the best limits to date for such massive gluinos with proper decay lengths greater than $\sim$0.5 m.
Design and Commissioning of the LWA1 Radio Telescope
Creators: name: Ellingson, S. W.
name: Craig, J.
name: Dowell, J.
name: Taylor, G. B.
name: Helmboldt, J. F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: LWA1 is a new large radio telescope array operating in the frequency range 10-88 MHz, located in central New Mexico. The telescope consists of 260 pairs of dipole-type antennas whose outputs are individually digitized and formed into beams. Simultaneously, signals from all dipoles can be recorded using one of the telescope's "all dipoles" modes, facilitating all-sky imaging. Notable features of the instrument include four independently-steerable beams utilizing digital "true time delay" beamforming, high intrinsic sensitivity (about 6 kJy zenith system equivalent flux density), large instantaneous bandwidth (up to 78 MHz), and large field of view (about 3-10 degrees, depending on frequency and zenith angle of pointing). This paper summarizes the design of LWA1, its performance as determined in commissioning experiments, and results from early science observations demonstrating the capabilities of the instrument.
description: 8 pages, 16 figures, 4 tables, to appear in 2013 IEEE International Symposium on Phased Array Systems & Technology
Consequences of Symmetries and Consistency Relations in the Large-Scale Structure of the Universe for Non-local bias and Modified Gravity
Creators: name: Kehagias, Alexandros
name: Noreña, Jorge
name: Perrier, Hideki
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Consistency relations involving the soft limit of the (n + 1)-correlator functions of dark matter and galaxy overdensities can be obtained, both in real and redshift space, thanks to the symmetries enjoyed by the Newtonian equations of motion describing the dark matter and galaxy fluids coupled through gravity. We study the implications of such symmetries for the theory of galaxy bias and for the theories of modified gravity. We find that the invariance of the fluid equations under a coordinate transformation that induces a long-wavelength velocity constrain the bias to depend only on a set of invariants, while the symmetry of such equations under Lifshitz scalings in the case of matter domination allows one to compute the time-dependence of the coefficients in the bias expansion. We also find that in theories of modified gravity which violate the equivalence principle induce a violation of the consistency relation which may be a signature for their observation. Thus, given adiabatic Gaussian initial conditions, the observation of a deviation from the consistency relation for galaxies would signal a break-down of the so-called non-local Eulerian bias model or the violation of the equivalence principle in the underlying theory of gravity.
description: 29 pages, 1 figure