cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multiresolution community detection for megascale networks by information-based replica correlations
Creators: name: Ronhovde, Peter
name: Nussinov, Zohar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We use a Potts model community detection algorithm to accurately and quantitatively evaluate the hierarchical or multiresolution structure of a graph. Our multiresolution algorithm calculates correlations among multiple copies ("replicas") of the same graph over a range of resolutions. Significant multiresolution structures are identified by strongly correlated replicas. The average normalized mutual information, the variation of information, and other measures in principle give a quantitative estimate of the "best" resolutions and indicate the relative strength of the structures in the graph. Because the method is based on information comparisons, it can in principle be used with any community detection model that can examine multiple resolutions. Our approach may be extended to other optimization problems. As a local measure, our Potts model avoids the "resolution limit" that affects other popular models. With this model, our community detection algorithm has an accuracy that ranks among the best of currently available methods. Using it, we can examine graphs over 40 million nodes and more than one billion edges. We further report that the multiresolution variant of our algorithm can solve systems of at least 200000 nodes and 10 million edges on a single processor with exceptionally high accuracy. For typical cases, we find a super-linear scaling, O(L^{1.3}) for community detection and O(L^{1.3} log N) for the multiresolution algorithm where L is the number of edges and N is the number of nodes in the system.
description: 19 pages, 14 figures, published version with minor changes
Über(gänge zwischen) Schokolade und Panzersperren / (Transitions between) Chocolate and tank traps
Creators: name: Froelicher, Anna
name: Gau, Sønke
name: Graf, Simon
Publisher: name: Zenodo
Year: 2023
Subjects: Material Culture
Panzersperren
Landschaft
Kulturerbe
Nation Building

description: Kinder, Kunst und Kleingetier: Das Forschungsprojekt "Materialisierte Erinnerungen (in) der Landschaft" geht dem Bedeutungswandel von Panzersperren nach. Children, art and small animals: the research project on "Materialized Memories of (and in) Landscape" investigates the changing meanings of anti-tank barriers.
description: + ID: 596517
Preregistration - Replication of Pendry (1998) - Aug 2020
Creators: name: Vrantsidis, Thalia
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Preregistration of a replication of Pendry (1998) before data collection.
Ptomaphaginus sabahensis Schilthuizen & Perreau 2008, spec. nov.
Creators: name: Schilthuizen, Menno
name: Perreau, Michel
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Ptomaphaginus
Ptomaphaginus sabahensis

description: Ptomaphaginus sabahensis spec. nov. (figs 11-12) Type material.— Holotype ♂: Malaysia: Sabah: Mt. Kinabalu, 1580 m, 27.iv.1987, leg. Burckhardt & Löbl (MHNG). Diagnosis.— Habitus long oval. Species elongated, the body shape parallel, light brown. Pronotum short. Description.— Habitus ovoid. Light brown, the tarsi and antennae lighter, uniformly yellowish. Length: 2.4 mm. Antennae 1.15 times as long as the width of the head. Male protarsi dilated, 0.7 times as wide as the apex of protibia. Pronotum 2.3 times wider than long, nearly as wide as elytra, the apical corner drawn out. Elytra 1.35 times longer than their combined width. Aedeagus (figs 11-12) quadrangular with a long and sinuous apical expansion. Internal stylus moderately thick, expanded outside the aedeagus at the apex. Distribution.— Presently known only from the type locality: Mt. Kinabalu. Etymology.— Named from the region where it has been found first.
description: Published as part of Schilthuizen, Menno & Perreau, Michel, 2008, New species and new records of Ptomaphaginus Portevin from the Sunda region, Southeast Asia (Coleoptera: Leiodidae: Cholevinae), pp. 189-210 in Zool. Med. Leiden 82 (19) on page 202, DOI: 10.5281/zenodo.3576287
Impulse excitation diagram as a tool to achieve high energy orbits
Creators: name: Gaska, Damian
name: Margielewicz, Jerzy
name: Litak, Grzegorz
name: Wolszczak, Piotr
name: Bucki, Slawomir
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: Applied Physics (physics.app-ph)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: The paper presents the application of a new impulse excitation diagram (IED) to help realize high-energy orbits in nonlinear energy harvesting systems. In the case of non-linearity, we can deal with the occurrence of coexisting solutions and the proposed diagram allows for the use of the impulse excitation method in order to change the solution. For this purpose, the author's IED diagram was presented to determine the characteristics, duration and moment of initiation of the external disturbing impulse in order to jump to another orbit. An application example is the quasizero energy harvester and two different impulse characteristics.
description: 5 pages, 4 figures
FAIR National Roadshow - Serbia: Research Assessment and Open Science practices in Serbia
Creators: name: Dillo, Ingrid
name: Kosanovic, Biljana
name: Ivanovic, Dragan
name: Verbugr, Maaike
name: Irimia, Alina
name: O'Neill, Gareth
name: Davidson, Joy
Publisher: name: Zenodo
Year: 2023
Subjects: Research Assessment, Open Science, Serbia, FAIR Data

description: These slides were presented during the FAIR National Roadshow Serbia, on 10th October 2023. The event debated around the status of OS practices in the country starting from an overview of the FAIR policy regulations in Serbia, leveraging on current initiatives and assessing challenges still to be addressed by the Serbian research community, such as the eNauka portal. The debate was stimulated by presentations about the GraspOS and OPUS projects and by FAIR-IMPACT partners working on FAIR-IMPACT contribution to FAIR assessment practices The event page is available at https://fair-impact.eu/events/national-roadshows/open-science-and-research-data-management-policies-serbia
Uniformly Random Colourings of Sparse Graphs
Creators: name: Hurley, Eoin
name: Pirot, François
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We analyse uniformly random proper $k$-colourings of sparse graphs with maximum degree $Δ$ in the regime $Δ< k\ln k $. This regime corresponds to the lower side of the shattering threshold for random graph colouring, a paradigmatic example of the shattering threshold for random Constraint Satisfaction Problems. We prove a variety of results about the solution space geometry of colourings of fixed graphs, generalising work of Achlioptas, Coja-Oghlan, and Molloy on random graphs, and justifying the performance of stochastic local search algorithms in this regime. Our central proof relies only on elementary techniques, namely the first-moment method and a quantitative induction, yet it strengthens list-colouring results due to Vu, and more recently Davies, Kang, P., and Sereni, and generalises state-of-the-art bounds from Ramsey theory in the context of sparse graphs. It further yields an approximately tight lower bound on the number of colourings, also known as the partition function of the Potts model, with implications for efficient approximate counting.
Investigating the Use of Acoustic Angiography as a Tool for Evaluating Tumor Response to Radiation Therapy
Creators: name: Rao, Sneha
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Acoustic angiography is a novel method that uses a dual frequency ultrasound transducer to image vasculature while eliminating noise from the surrounding tissue7. Given the fact this imaging technique was recently developed, its effectiveness as an imaging technique for clinical applications has not yet been fully verified. Studies have shown that this technique is capable of capturing changes in vascular structure due to tumor angiogenesis7. However, the use of this method in evaluating the efficacy of radiation therapy has not yet been characterized. The purpose of this study was to verify a pilot study that suggested that acoustic angiography was in fact a viable method of evaluating radiation therapy tumor response in a rat model7. To provide additional support for this claim, this study used a rat model with a sample size of seven to assess which metric, tumor size or volume vascularity ratio, were more sensitive to changes in tumor due to radiation. Due to problems with the tumor model and possible tumor necrosis, a clear correlation between the two metrics and diagnostic sensitivity could not be made. While the study was not able to provide conclusive evidence to support the claims made in the previous study, the study did yield insight on better experimental methods and future applicable projects.
More on the properties of the first Gribov region in Landau gauge
Creators: name: Maas, Axel
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Complete gauge-fixing beyond perturbation theory in non-Abelian gauge theories is a non-trivial problem. This is particularly evident in covariant gauges, where the Gribov-Singer ambiguity gives an explicit formulation of the problem. In practice, this is a problem if gauge-dependent quantities between different methods, especially lattice and continuum methods, should be compared: Only when treating the Gribov-Singer ambiguity in the same way is the comparison meaningful. To provide a better basis for such a comparison the structure of the first Gribov region in Landau gauge, a subset of all possible gauge copies satisfying the perturbative Landau gauge condition, will be investigated. To this end, lattice gauge theory will be used to investigate a two-dimensional projection of the region for SU(2) Yang-Mills theory in two, three, and four dimensions for a wide range of volumes and discretizations.
description: 42 pages, 23 figures, 1 table
Radial Density Statistics of the Galaxy Distribution and the Luminosity Function
Creators: name: Iribarrem, Alvaro S.
name: Ribeiro, Marcelo B.
name: Stoeger, William R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This paper discusses a connection between the relativistic number counts of cosmological sources and the observed galaxy luminosity function (LF). Observational differential number densities are defined and obtained from published LF data using such connection. We observe a distortion in the observational quantities that increases with higher redshift values as compared to the theoretical predictions. The use of different cosmological distance measures plays a role in such a distortion
description: 3 pages, 3 figures. Abridged version of arXiv:1201.5571
Zambian Breadwinners Leave for the City: Rural-Urban Migration and the Zambian Family
Creators: name: Celnarova, Miriam
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: African societies have experienced rapid urbanization since the post-colonial era, causing
an increase in mass migration across and within countries’ boundaries. Modern research on rural-urban
migration in Sub-Saharan Africa generally focuses on economic impacts such as the
distribution of remittances, or health aspects such as the spread of HIV/AIDS into the rural areas.
However, the social effects of internal migration on family structure and processes are rarely
researched. In Zambia, families represent an important carrier of social identity and belonging.
The purpose of this study is to examine how the migration of rural breadwinners to urban areas
affects Zambian families in terms of social structure and processes. I highlight the different
strategies adopted by families to preserve relationships between urban migrants and their rural
home communities. I also focus on how migration shapes the perceptions of good parenting by
contrasting rural and urban child rearing narratives. The observations are based on a series of
interviews and focus groups with urbanites and villagers in Zambia directly affected by internal
migration.
Blue straggler masses from pulsation properties. II. Topology of the Instability Strip
Creators: name: Fiorentino, G.
name: Marconi, M.
name: Bono, G.
name: Dalessandro, E.
name: Ferraro, F. R.
name: Lanzoni, B.
name: Lovisi, L.
name: Mucciarelli, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a new set of nonlinear, convective radial pulsation models for main sequence stars computed assuming three metallicities: Z=0.0001, 0.001 and 0.008. These chemical compositions bracket the metallicity of stellar systems hosting SX Phoenicis stars (SXPs or pulsating Blue Stragglers), namely Galactic globular clusters and nearby dwarf spheroidals. Stellar masses and luminosities of the pulsation models are based on alpha--enhanced evolutionary tracks from the BASTI website. We are able to define the topology of the instability strip (IS), and in turn the pulsation relations for the first four pulsation modes. We found that third overtones approach a stable nonlinear limit cycle. Predicted and empirical IS agree quite well in the case of 49 SXPs belonging to omega Cen. We used theoretical Period-Luminosity relations in B,V bands to identify their pulsation mode. We assumed Z=0.001 and Z=0.008 as mean metallicities of SXPs in omega Cen. We found respectively 13-15 fundamental, 22-6 first and 9-4 second overtone modes. Five are unstable in the third overtone mode only for Z=0.001. Using the above mode identification and applying the proper mass-dependent Period-Luminosity relations we found masses ranging from ~1.0 to 1.2 Mo (=1.12, sigma=0.04 Mo) and from ~1.2 to 1.5 Mo (=1.33, sigma=0.03 Mo) for Z=0.001 and 0.008 respectively. Our investigation supports the use of evolutionary tracks to estimate of SXP masses. We will extend our analysis to higher Helium content that may have an impact in our understanding of the BSS formation scenario.
description: 14 pages, 5 figures, 7 tables, ApJ accepted
Communication-Efficient Learning of Deep Networks from Decentralized Data
Creators: name: McMahan, H. Brendan
name: Moore, Eider
name: Ramage, Daniel
name: Hampson, Seth
name: Arcas, Blaise Agüera y
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Modern mobile devices have access to a wealth of data suitable for learning models, which in turn can greatly improve the user experience on the device. For example, language models can improve speech recognition and text entry, and image models can automatically select good photos. However, this rich data is often privacy sensitive, large in quantity, or both, which may preclude logging to the data center and training there using conventional approaches. We advocate an alternative that leaves the training data distributed on the mobile devices, and learns a shared model by aggregating locally-computed updates. We term this decentralized approach Federated Learning. We present a practical method for the federated learning of deep networks based on iterative model averaging, and conduct an extensive empirical evaluation, considering five different model architectures and four datasets. These experiments demonstrate the approach is robust to the unbalanced and non-IID data distributions that are a defining characteristic of this setting. Communication costs are the principal constraint, and we show a reduction in required communication rounds by 10-100x as compared to synchronized stochastic gradient descent.
description: [v4] Fixes a typo in the FedAvg pseudocode. [v3] Updates the large-scale LSTM experiments, along with other minor changes
One-way quantum computing with arbitrarily large time-frequency continuous-variable cluster states from a single optical parametric oscillator
Creators: name: Alexander, Rafael N.
name: Wang, Pei
name: Sridhar, Niranjan
name: Chen, Moran
name: Pfister, Olivier
name: Menicucci, Nicolas C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One-way quantum computing is experimentally appealing because it requires only local measurements on an entangled resource called a cluster state. Record-size, but non-universal, continuous-variable cluster states were recently demonstrated separately in the time and frequency domains. We propose to combine these approaches into a scalable architecture in which a single optical parametric oscillator and simple interferometer entangle up to ($3\times 10^3$ frequencies) $\times$ (unlimited number of temporal modes) into a new and computationally universal continuous-variable cluster state. We introduce a generalized measurement protocol to enable improved computational performance on this new entanglement resource.
description: (v4) Consistent with published version; (v3) Fixed typo in arXiv abstract, 14 pages, 8 figures; (v2) Supplemental material incorporated into main text, additional explanations added, results unchanged, 14 pages, 8 figures; (v1) 5 pages (3 figures) + 6 pages (5 figures) of supplemental material; submitted for publication
Fast Detection of Community Structures using Graph Traversal in Social Networks
Creators: name: Basuchowdhuri, Partha
name: Sikdar, Satyaki
name: Nagarajan, Varsha
name: Mishra, Khusbu
name: Gupta, Surabhi
name: Majumder, Subhashis
Publisher: name: arXiv
Year: 2017
Subjects: subject: Social and Information Networks (cs.SI)
subject: Artificial Intelligence (cs.AI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Finding community structures in social networks is considered to be a challenging task as many of the proposed algorithms are computationally expensive and does not scale well for large graphs. Most of the community detection algorithms proposed till date are unsuitable for applications that would require detection of communities in real-time, especially for massive networks. The Louvain method, which uses modularity maximization to detect clusters, is usually considered to be one of the fastest community detection algorithms even without any provable bound on its running time. We propose a novel graph traversal-based community detection framework, which not only runs faster than the Louvain method but also generates clusters of better quality for most of the benchmark datasets. We show that our algorithms run in O(|V | + |E|) time to create an initial cover before using modularity maximization to get the final cover. Keywords - community detection; Influenced Neighbor Score; brokers; community nodes; communities
description: 29 pages, 9 tables, and 13 figures. Accepted in "Knowledge and Information Systems", 2018
Ptomaphaginus burckhardti Schilthuizen & Perreau 2008, spec. nov.
Creators: name: Schilthuizen, Menno
name: Perreau, Michel
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Ptomaphaginus
Ptomaphaginus burckhardti

description: Ptomaphaginus burckhardti spec. nov. (figs 7-8). Type material.— Holotype ♂: Malaysia: Sabah: Mount Kinabalu, 2600 m alt., 1.v.1987 leg. Burckhardt and Löbl (MHNG). Paratype: 1 ♂: same data as holotype (CMPR). Diagnosis.— Habitus slender, ovoid. Uniformly light brown. Eyes reduced. Elytra laterally not curved, narrowed caudad in an approximately straight line. Male with a large and deep semicircular depression extended on the 5 th and 6 th visible abdominal sternites, bordered on the front half with long and dense hairs, and a central notch on the apical edge of the 6 th. Description.— Habitus slender, ovoid, uniformly light brown. Length: 2.5 mm. Eyes reduced, each only 0.1 times as wide as the width of the head. Antennae slender, 1.25 times longer than the width of the head. Profemur as wide as the protibia. Pronotum 1.7 times as wide as long, with caudal corners slightly drawn out. Elytra slender, 1.25 times as long (measured from the caudal tip of the scutellum) as their combined width, the widest part at the base, the sides very slightly curved, rectilinearly narrowed from base to apex. Apterous. Male with a large and deep semicircular depression extended on the 5 th and 6 th visible abdominal sternites, bordered on the front half with long and dense hairs, and a central notch on the apical edge of the 6 th. Aedeagus (figs 7-8) slender. The apex is tapered terminally and ends in a flattened, duck-bill-shaped processus. It carries several long, curved, lateral setae. Distribution.— The single known specimen was found at high altitude on Mount Kinabalu. Remarks.— At first glance, the species is similar to a Ptomaphaminus, because of the small size, the lack of pigmentation and reduced eyes, which suggest an adaptation to a deep montane litter biotope (as does the absence of wings). However, since it lacks the diagnostic thoracal characters of this genus, it is placed in Ptomaphaginus. Etymology.— Dedicated to Daniel Burckhardt, who first collected this species.
description: Published as part of Schilthuizen, Menno & Perreau, Michel, 2008, New species and new records of Ptomaphaginus Portevin from the Sunda region, Southeast Asia (Coleoptera: Leiodidae: Cholevinae), pp. 189-210 in Zool. Med. Leiden 82 (19) on pages 202-203, DOI: 10.5281/zenodo.3576287
The Most Common Stream Width is Remarkably Invariant with Changes in Hydrologic Conditions
Creators: name: Barefoot, Eric
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Headwater streams, despite being a significant natural resource, and a critical element of the
hydrosphere, remain an understudied system. Anyone who has observed small creeks and rivers
closely will know that stream width is highly variable, and depends on the hydrological conditions in
the catchment. Stream width (and by extension, surface area) is a critical parameter for a number
of important hydrological and biogeochemical processes. Even so, to date there is no consistent
study of dynamic stream widths throughout an entire headwater catchment. Here are presented
data and observations documenting the spatial and temporal variability of stream width in a single
0.484 km2 headwater catchment in central North Carolina, USA. The frequency distribution of
stream widths in the catchment follows a lognormal distribution. Two opposing processes that
scale with discharge impact the width distribution. One is at-a-point stream widening, and the
other is dynamic network expansion. Despite high spatial and temporal width heterogeneity, the
width distribution is remarkably stable with discharge, with a mode width that lies in a narrow
range. These results suggest that at-a-point widening and network expansion are roughly in balance,
and the relative impacts of each are analyzed.
The character table of a sharply 5-transitive subgroup of ${\rm Alt}(12)$
Creators: name: Gill, Nick
name: Hughes, Sam
Publisher: name: arXiv
Year: 2018
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20C15, 20B20, 20C34

description: In this paper we calculate the character table of a sharply $5$-transitive subgroup of ${\rm Alt}(12)$, and of a sharply $4$-transitive subgroup of ${\rm Alt}(11)$. Our presentation of these calculations is new because we make no reference to the sporadic simple Mathieu groups, and instead deduce the desired character tables using only the existence of the stated multiply transitive permutation representations.
description: 12 pages; submitted
Image analysis as an improved melting criterion in laser-heated diamond anvil cell
Creators: name: Salem, Ran
name: Matityahu, Shlomi
name: Melchior, Aviva
name: Nikolaevsky, Mark
name: Noked, Ori
name: Sterer, Eran
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The precision of melting curve measurements using laser-heated diamond anvil cell (LHDAC) is largely limited by the correct and reliable determination of the onset of melting. We present a novel image analysis of speckle interference patterns in the LHDAC as a way to define quantitative measures which enable an objective determination of the melting transition. Combined with our low-temperature customized IR pyrometer, designed for measurements down to 500K, our setup allows studying the melting curve of materials with low melting temperatures, with relatively high precision. As an application, the melting curve of Te was measured up to~$\rm35\,GPa$. The results are found to be in good agreement with previous data obtained at pressures up to~$\rm10\,GPa$.
description: 5 pages, 4 figures
New Congruences Modulo 2, 4, and 8 for the Number of Tagged Parts Over the Partitions with Designated Summands
Creators: name: Baruah, Nayandeep Deka
name: Kaur, Mandeep
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11P83, Secondary 05A17

description: Recently, Lin introduced two new partition functions PD$_t(n)$ and PDO$_t(n)$, which count the total number of tagged parts over all partitions of $n$ with designated summands and the total number of tagged parts over all partitions of $n$ with designated summands in which all parts are odd. Lin also proved some congruences modulo 3 and 9 for PD$_t(n)$ and PDO$_t(n)$, and conjectured some congruences modulo 8. Very recently, Adansie, Chern, and Xia found two new infinite families of congruences modulo 9 for PD$_t(n)$. In this paper, we prove the congruences modulo 8 conjectured by Lin and also find many new congruences and infinite families of congruences modulo some small powers of 2.
description: 19 pages
Proofs of Some Conjectures of Chan on Appell-Lerch Sums
Creators: name: Baruah, Nayandeep Deka
name: Begum, Nilufar Mana
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11P83, Secondary 33D15

description: On page 3 of his lost notebook, Ramanujan defines the Appell-Lerch sum $$ϕ(q):=\sum_{n=0}^\infty \dfrac{(-q;q)_{2n}q^{n+1}}{(q;q^2)_{n+1}^2},$$ which is connected to some of his sixth order mock theta functions. Let $\sum_{n=1}^\infty a(n)q^n:=ϕ(q)$. In this paper, we find a representation of the generating function of $a(10n+9)$ in terms of $q$-products. As corollaries, we deduce the congruences $a(50n+19)\equiv a(50n+39)\equiv a(50n+49)\equiv0~(\textup{mod}~25)$ as well as $a(1250n+250r+219)\equiv 0~(\textup{mod}~125)$, where $r=1$, $3$, and $4$. The first three congruences were conjectured by Chan in 2012, whereas the congruences modulo 125 are new. We also prove two more conjectural congruences of Chan for the coefficients of two Appell-Lerch sums.
description: 14 pages
On the right track? Investigating the effect of path characteristics on visuospatial bootstrapping in verbal serial recall
Creators: name: Morey, Candice
name: Allan, Anthea
name: Darling, Stephen
name: Allen, Richard
name: Havelka, Jelena
Publisher: name: Open Science Framework
Year: 2022

description: Visuospatial bootstrapping (VSB) occurs when memory for verbal material is enhanced via association with meaningful visuospatial information. Sequences of digits are visually presented either in the center of the screen or within a keypad layout in which the digits may be arranged identically to familiar pin pad and mobile phone layouts, or randomly. Recall is consistently higher when digits are presented in the familiar layout. This “bootstrapping” could involve primarily long-term memories, primarily spatial memories, or may depend on both. We manipulated the path complexity of sequences to test whether the VSB effect depends on the quality of spatial representations in conjunction with the familiarity of the spatial layout in two experiments. We consistently observed both VSB effects and path complexity effects on verbal serial recall, but never observed any interaction between these factors, even when articulatory suppression was imposed. Analysis of recall by serial position revealed that the VSB effect was focused on the end-of-list items. Our finding of pervasive path complexity effects on verbal serial recall suggests incidental encoding of spatial path occurs during visually-presented verbal tasks regardless of layout familiarity, confirming that spatial factors can affect verbal recall. However, because similar path complexity effects occurred with familiar and random layouts, the VSB effect cannot be attributed to any unique opportunity to encode spatial paths only afforded by presentation within the familiar layout. Contents: The materials folder contains the editable E-Prime file used to run Experiment 2. Experiment 1 was identical, except that 7-digit lists were used and there was no articulatory suppression. The Data and Analyses folder contains : 1) vsbPathCrossings.R: This script pre-processed the data, combining the trial data recorded by E-Prime with the responses recorded by the researcher, and calculated dependent variables. 2) vsbXCross.Rdata is the data output by the script in step 1, used in all subsequent analyses. 3) vsbPath_summaryCCM.Rmd contains the analyses described in the manuscript and supplemental error analyses. This markdown-file outputs the .html summary file. 4) vsbPath_summaryCCM.html summarizes the analyses. Code is available in the .Rmd file. 5) readMe_vsbXCross.R lists the contents of each column in the cleaned data frame. The remaining 8 .Rdata files are the output from the Bayes Factor ANOVAs called in the .Rmd file. If run as written, the .Rmd file will call these saved analyses. You may also uncomment the scripts performing the analyses to re-run them.
Dynamical masses of two young transiting sub-Neptunes orbiting HD 63433
Creators: name: Mallorquín, M.
name: Béjar, V. J. S.
name: Lodieu, N.
name: Osorio, M. R. Zapatero
name: Tabernero, H.
name: Mascareño, A. Suárez
name: Zechmeister, M.
name: Luque, R.
name: Pallé, E.
name: Montes, D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Although the number of exoplanets reported in the literature exceeds 5000 so far, only a few dozen of them are young planets ($\le$900 Myr). However, a complete characterization of these young planets is key to understanding the current properties of the entire population. Hence, it is necessary to constrain the planetary formation processes and the timescales of dynamical evolution by measuring the masses of exoplanets transiting young stars. We characterize and measure the masses of two transiting planets orbiting the 400 Myr old solar-type star HD\,63433, which is a member of the Ursa Major moving group. We analysed precise photometric light curves of five sectors of the TESS mission with a baseline of $\sim$750 days and obtained $\sim$150 precise radial velocity measurements with the visible and infrared arms of the CARMENES instrument at the Calar Alto 3.5 m telescope in two different campaigns of $\sim$500 days. We performed a combined photometric and spectroscopic analysis to retrieve the planetary properties of two young planets. The strong stellar activity signal was modelled by Gaussian regression processes. We have updated the transit parameters of HD\,63433\,b and c and obtained planet radii of R$_p^b$\,=\,2.140\,$\pm$\,0.087 R$_\oplus$ and R$_p^c$\,=\,2.692\,$\pm$\,0.108 R$_\oplus$. Our analysis allowed us to determine the dynamical mass of the outer planet with a 4$σ$ significance ($M_p^c$\,=\,15.54\,$\pm$\,3.86 M$_\oplus$) and set an upper limit on the mass of the inner planet at 3$σ$ ($M_p^b$\,$<$\,21.76 M$_\oplus$). According to theoretical models, both planets are expected to be sub-Neptunes, whose interiors mostly consist of silicates and water with no dominant composition of iron, and whose gas envelopes are lower than 2\% in the case of HD\,63433\,c. The envelope is unconstrained in HD\,63433\,b.
Dust in the Local Group
Creators: name: Li, Aigen
name: Wang, Shu
name: Gao, Jian
name: Jiang, B. W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: How dust absorbs and scatters starlight as a function of wavelength (known as the interstellar extinction curve) is crucial for correcting for the effects of dust extinction in inferring the true luminosity and colors of reddened astrophysical objects. Together with the extinction spectral features, the extinction curve contains important information about the dust size distribution and composition. This review summarizes our current knowledge of the dust extinction of the Milky Way, three Local Group galaxies (i.e., the Small and Large Magellanic Clouds, and M31), and galaxies beyond the Local Group.
description: 21 pages, 11 figures; invited review article published in "LESSONS FROM THE LOCAL GROUP -- A Conference in Honour of David Block and Bruce Elmegreen" eds. Freeman, K.C., Elmegreen, B.G., Block, D.L. & Woolway, M. (SPRINGER: NEW YORK), pp. 85-105
New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12
Creators: name: Kepler, S. O.
name: Pelisoli, Ingrid
name: Koester, Detlev
name: Ourique, Gustavo
name: Romero, Alejandra Daniela
name: Reindl, Nicole
name: Kleinman, Scot J.
name: Eisenstein, Daniel J.
name: Valois, A. Dean M.
name: Amaral, Larissa A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of 6576 new spectroscopically confirmed white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. We obtain Teff, log g and mass for hydrogen atmosphere white dwarf stars (DAs) and helium atmosphere white dwarf stars (DBs), estimate the calcium/helium abundances for the white dwarf stars with metallic lines (DZs) and carbon/helium for carbon dominated spectra DQs. We found one central star of a planetary nebula, one ultra-compact helium binary (AM CVn), one oxygen line dominated white dwarf, 15 hot DO/PG1159s, 12 new cataclysmic variables, 36 magnetic white dwarf stars, 54 DQs, 115 helium dominated white dwarfs, 148 white dwarf+main sequence star binaries, 236 metal polluted white dwarfs, 300 continuum spectra DCs, 230 hot subdwarfs, 2936 new hydrogen dominated white dwarf stars, and 2675 cool hydrogen dominated subdwarf stars. We calculate the mass distribution of all 5883 DAs with S/N>15 in DR12, including the ones in DR7 and DR10, with an average S/N=26, corrected to the 3D convection scale, and also the distribution after correcting for the observed volume, using 1/Vmax.
description: 12 pages, 8 figures. arXiv admin note: text overlap with arXiv:1411.4149
An Upper Limit to Youth Psychotherapy Benefit? A Meta-Analytic Copula Approach to Psychotherapy Outcomes
Creators: name: Jones, Payton
name: Mair, Patrick
name: Kuppens, Sofie
name: Weisz, John
Publisher: name: Open Science Framework
Year: 2022

description: Across 50 years of research, extensive efforts have been made to improve the effectiveness of psychotherapies for children and adolescents. Yet recent evidence shows no significant improvement in youth psychotherapy outcomes. In other words, efforts to improve the general quality of therapy models do not appear to have translated directly into improved outcomes. We used multilevel meta-analytic data from 502 randomized controlled trials to generate a bivariate copula model predicting effect size as therapy quality approaches infinity. Our results suggest that even with a therapy of perfect quality, achieved effect sizes may be modest. If therapy quality and therapy outcome share a correlation of 0.20 (a somewhat optimistic assumption given the evidence we review), a therapy of perfect quality would produce an effect size of Hedge's g = 0.83. We suggest that youth psychotherapy researchers complement their efforts to improve psychotherapy quality by investigating additional strategies for improving outcomes.
Examining the Sociodemographic Variables and Social Networking Site Addiction among University Students in Sarajevo
Creators: name: Ünal-Aydın, Pınar
name: Elen, Mehmet Akif
name: Boz, Canahmet
name: Aydın, Orkun
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 460105
subject: Applications in social sciences and education

description: Research into internet addiction has dramatically increased over the last decade. Therefore, studies on Social Networking Site (SNS) addiction are increasing day by day. It is acknowledged that problematic use of SNS may affect academic improvement; however, there are contradictory findings in the literature. To ascertain its effect on academic achievements and to reveal its associations with sociodemographic variables, this study aimed to examine the relationship between academic success, sociodemographic features, and SNSs use patterns among university students. A total of 275 individuals participated in the study. A sociodemographic data form and the Bergen Social Media Addiction Scale (BSMAS) were administered. The results revealed a statistically significant negative relationship between age and BSMAS total score, and grade point average (GPA) and relapse criterion of BSMAS. Findings are discussed in light of previous literature on SNS. Limitations and suggestions for future studies are indicated.
Probabilistic $K$-mean with local alignment for clustering and motif discovery in functional data
Creators: name: Cremona, Marzia A.
name: Chiaromonte, Francesca
Publisher: name: arXiv
Year: 2018
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We develop a new method to locally cluster curves and discover functional motifs, i.e.~typical ``shapes'' that may recur several times along and across the curves capturing important local characteristics. In order to identify these shared curve portions, our method leverages ideas from functional data analysis (joint clustering and alignment of curves), bioinformatics (local alignment through the extension of high similarity seeds) and fuzzy clustering (curves belonging to more than one cluster, if they contain more than one typical ``shape''). It can employ various dissimilarity measures and incorporate derivatives in the discovery process, thus exploiting complex facets of shapes. We demonstrate the performance of our method with an extensive simulation study, and show how it generalizes other clustering methods for functional data. Finally, we provide real data applications to Berkeley growth data, Italian Covid-19 death curves and ``Omics'' data related to mutagenesis.
description: 22 pages, 6 figures. This work has been presented at various conferences
Visualizing the atomic-scale origin of metallic behavior in Kondo insulators
Creators: name: Pirie, Harris
name: Mascot, Eric
name: Matt, Christian E.
name: Liu, Yu
name: Chen, Pengcheng
name: Hamidian, M. H.
name: Saha, Shanta
name: Wang, Xiangfeng
name: Paglione, Johnpierre
name: Luke, Graeme
name: Goldhaber-Gordon, David
name: Hirjibehedin, Cyrus F.
name: Davis, J. C. Séamus
name: Morr, Dirk K.
name: Hoffman, Jennifer E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A Kondo lattice is often electrically insulating at low temperatures. However, several recent experiments have detected signatures of bulk metallicity within this Kondo insulating phase. Here we visualize the real-space charge landscape within a Kondo lattice with atomic resolution using a scanning tunneling microscope. We discover nanometer-scale puddles of metallic conduction electrons centered around uranium-site substitutions in the heavy-fermion compound URu$_2$Si$_2$, and around samarium-site defects in the topological Kondo insulator SmB$_6$. These defects disturb the Kondo screening cloud, leaving behind a fingerprint of the metallic parent state. Our results suggest that the mysterious 3D quantum oscillations measured in SmB$_6$ could arise from these Kondo-lattice defects, although we cannot rule out other explanations. Our imaging technique could enable the development of atomic-scale charge sensors using heavy-fermion probes.
Exact entanglement cost of quantum states and channels under PPT-preserving operations
Creators: name: Wang, Xin
name: Wilde, Mark M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This paper establishes single-letter formulas for the exact entanglement cost of simulating quantum channels under free quantum operations that completely preserve positivity of the partial transpose (PPT). First, we introduce the $κ$-entanglement measure for point-to-point quantum channels, based on the idea of the $κ$-entanglement of bipartite states, and we establish several fundamental properties for it, including amortization collapse, monotonicity under PPT superchannels, additivity, normalization, faithfulness, and non-convexity. Second, we introduce and solve the exact entanglement cost for simulating quantum channels in both the parallel and sequential settings, along with the assistance of free PPT-preserving operations. In particular, we establish that the entanglement cost in both cases is given by the same single-letter formula, the $κ$-entanglement measure of a quantum channel. We further show that this cost is equal to the largest $κ$-entanglement that can be shared or generated by the sender and receiver of the channel. This formula is calculable by a semidefinite program, thus allowing for an efficiently computable solution for general quantum channels. Noting that the sequential regime is more powerful than the parallel regime, another notable implication of our result is that both regimes have the same power for exact quantum channel simulation, when PPT superchannels are free. For several basic Gaussian quantum channels, we show that the exact entanglement cost is given by the Holevo--Werner formula [Holevo and Werner, Phys. Rev. A 63, 032312 (2001)], giving an operational meaning of the Holevo-Werner quantity for these channels.
description: v2: 29 pages, 8 figures, accepted for publication in Physical Review A
Utilization of a CYP2C19 genotype-guided antiplatelet treatment algorithm over time in patients undergoing percutaneous coronary intervention
Creators: name: Cervantes, Alexandra
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Purpose: Individuals prescribed clopidogrel that carry a CYP2C19 loss-of-function (LOF) allele exhibit higher risk for adverse cardiovascular outcomes following percutaneous coronary intervention (PCI). Our institution implemented an algorithm that uses clinical factors and CYP2C19 genotype to guide P2Y12 inhibitor selection in high-risk PCI patients. Objective: We aimed to evaluate algorithm use over 24 months following implementation in a real-world clinical setting. Study Design: This single-center, retrospective cohort study included 1193 patients receiving coronary stent placement between July 2012-December 2013. Methods: Data was abstracted from the electronic health record. CYP2C19 genotype testing, P2Y12 inhibitor selection (clopidogrel versus prasugrel/ticagrelor), and changes in anti-platelet therapy were compared across 6-month intervals (July-Dec 2012, Jan-Jun 2013, July-Dec 2013) by chi-square.Results: Overall, a CYP2C19 genotype was obtained in 868 (72.8%) patients 263/868 (30.4%) carried a LOF allele, and prasugrel/ticagrelor was prescribed in 186/263 (70.7%) LOF carriers. CYP2C19 genotyping testing frequency at index PCI significantly declined over time from 88.2% (Jul-Dec 2012) to 61.4% (Jan-Jun 2013), 65.1% (Jul-Dec 2013), and 78.1% (Jan-Jun 2014) (P<0.001). There was also a significant decrease in use of prasugrel/ticagrelor in LOF carriers (83% to 78.2% to 53.8%, to 68.1%, respectively, P<0.001). This was accompanied by less frequent switching from clopidogrel to prasugrel/ticagrelor in LOF carriers over time (P=0.019). No significant difference in prasugrel/ticagrelor selection was observed over time in those without a LOF allele (21.3% to 19.9% to 27.4%, to 31.1%, respectively, P=0.348).Conclusion: CYP2C19 genotype testing in patients undergoing PCI and conversion to prasugrel/ticagrelor in LOF carriers was high over 24 months following implementation of a genotype-guided treatment algorithm. However, use of the algorithm in practice appeared to decrease over time, as indicated by a decrease in CYP2C19 genotype testing and use of prasugrel/ticagrelor in LOF carriers. This suggests that P2Y12 inhibitor selection is complex in real-world clinical practice and influenced by multiple factors.
Graphs on 21 edges that are not 2--apex
Creators: name: Barsotti, Jamison
name: Mattman, Thomas W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: Primary 05C10, Secondary 57M15, 57M25

description: We show that the 20 graph Heawood family, obtained by a combination of triangle-Y and Y-triangle moves on $K_7$, is precisely the set of graphs of at most 21 edges that are minor minimal for the property not $2$--apex. As a corollary, this gives a new proof that the 14 graphs obtained by triangle-Y moves on $K_7$ are the minor minimal intrinsically knotted graphs of 21 or fewer edges. Similarly, we argue that the seven graph Petersen family, obtained from $K_6$, is the set of graphs of at most 17 edges that are minor minimal for the property not apex.
description: Submitted to Involve
Ptomaphaginus obtusus Szymczakowski 1959
Creators: name: Schilthuizen, Menno
name: Perreau, Michel
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Ptomaphaginus
Ptomaphaginus obtusus

description: Ptomaphaginus obtusus Szymczakowski 1959 Ptomaphaginus obtusus Szymczakowski, 1959: 135. (holotype in HNHM) Loc. typ.: Sumatra central, Fort de Kock, caverne Pauh Ptomaphaginus balazuci Perreau, 1995: 970. syn. nov. Loc. typ.: Indonésie, Ngalam Kamang près de Tinngo Closer inspection of the type material of P. balazuci and the description of P. obtusus reveal that the external and genital traits of the two are identical. Hence, we consider P. balazuci a junior synonym of P. obtusus. The collection localities of the two are from the same locality.
description: Published as part of Schilthuizen, Menno & Perreau, Michel, 2008, New species and new records of Ptomaphaginus Portevin from the Sunda region, Southeast Asia (Coleoptera: Leiodidae: Cholevinae), pp. 189-210 in Zool. Med. Leiden 82 (19) on page 203, DOI: 10.5281/zenodo.3576287
description: {"references": ["Szymczakowski, W., 1959. Ptomaphaginus obtusus n. sp. de Sumatra avec remarques sur quelques especes australiennes des Catopidae (Coleoptera). - Polskie Pismo Entomologiczne 29 (7): 135 - 138.", "Perreau, M., 1995. Especes nouvelles ou mal connues de Cholevidae. - Revue Suisse de Zoologie 102 (4): 969 - 978."]}