cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rectified motion in an asymmetric channel: the role of hydrodynamic interactions with walls
Creators: name: Golshaei, B.
name: Najafi, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Dynamics of a Brownian particle in an asymmetric micro-channel that is subjected to an external oscillating force is numerically analyzed. In addition to the elastic collisions with the walls that are kind of short range interactions, the long range hydrodynamic influences of the walls have been considered. We demonstrate how the geometrical parameters of the channel change the rectified current of the particle. As a result of numerical calculations, we show that long range hydrodynamic interactions with walls, decrease the efficiency of the Brownian ratchet.
description: 5 pages, 5 figures, submitted to PRE
Inclusivity and Decentralisation of Candidate Selectorates: Factional Consequences for Centre-Left Parties in England, Germany, and the United States
Creators: name: Cowburn, Mike
name: Kerr, Rebecca
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: social democratic parties
subject: intra-party
subject: factions
subject: candidate selection
subject: primaries
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft

description: In recent elections, ‘progressives’ in centre-left parties have advocated for more democratised processes of candidate selection. We test whether more inclusive and decentralised selectorates align with higher numbers of progressive candidates nominated in national legislative elections by centre-left parties across three advanced western democracies between 2017 and 2021. In the Labour Party, more centralised selectorates aligned with higher numbers of progressives selected. For the SPD, we report null findings, likely due to additional incentives for factional co-operation in a multi-party system. In our most decentralised case, the Democratic Party, selection of progressives was congruent with district partisanship rather than selectorate inclusivity, with progressives more commonly selected in safe rather than competitive or unfavoured districts. This relationship was not present in our other cases. These findings highlight the importance of the decentralisation dimension for the factional allegiance of legislative candidates nominated.
IMPLEMENTATION OF ACCOUTING FOR DECISION MAKING
Creators: name: Agrawal, Sarita
Publisher: name: Zenodo
Year: 2023

description: On February 24, 2023 a lecture on "implementation of accounting for decision making" delivered by Dr.jitendra Upadhay. He is a committee chairman of accountancy in Tribhuvan university, he is also the research head of Nepal commerce campus.
description: The main objective of this classroom lecture is to make students aware about the use of accounting in everyday life as well as solve the quarries students have about the particular topic of accounting.
A Neurorobotics Approach to Behaviour Selection based on Human Activity Recognition
Creators: name: Ranieri, Caetano M.
name: Moioli, Renan C.
name: Vargas, Patricia A.
name: Romero, Roseli A. F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Behaviour selection has been an active research topic for robotics, in particular in the field of human-robot interaction. For a robot to interact effectively and autonomously with humans, the coupling between techniques for human activity recognition, based on sensing information, and robot behaviour selection, based on decision-making mechanisms, is of paramount importance. However, most approaches to date consist of deterministic associations between the recognised activities and the robot behaviours, neglecting the uncertainty inherent to sequential predictions in real-time applications. In this paper, we address this gap by presenting a neurorobotics approach based on computational models that resemble neurophysiological aspects of living beings. This neurorobotics approach was compared to a non-bioinspired, heuristics-based approach. To evaluate both approaches, a robot simulation is developed, in which a mobile robot has to accomplish tasks according to the activity being performed by the inhabitant of an intelligent home. The outcomes of each approach were evaluated according to the number of correct outcomes provided by the robot. Results revealed that the neurorobotics approach is advantageous, especially considering the computational models based on more complex animals.
description: This preprint has not undergone peer review or any post-submission improvements or corrections. The Version of Record of this article is published in Cognitive Neurodynamics (2022), and is available online at https://doi.org/10.1007/s11571-022-09886-z
Annual coral bleaching and the long-term recovery capacity of coral
Creators: name: Grottoli, Andréa G.
name: Baumann, Justin H.
name: Matsui, Yohei
name: Schoepf, Verena
name: Levas, Stephen J.
name: Aschaffenburg, Matthew D.
name: Warner, Mark E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Mass bleaching events are predicted to occur annually later this century. Nevertheless, it remains unknown whether corals will be able to recover between annual bleaching events. Using a combined tank and field experiment, we simulated annual bleaching by exposing three Caribbean coral species (Porites divaricata, Porites astreoides and Orbicella faveolata) to elevated temperatures for 2.5 weeks in 2 consecutive years. The impact of annual bleaching stress on chlorophyll a, energy reserves, calcification, and tissue C and N isotopes was assessed immediately after the second bleaching and after both short- and long-term recovery on the reef (1.5 and 11 months, respectively). While P. divaricata and O. faveolata were able to recover from repeat bleaching within 1 year, P. astreoides experienced cumulative damage that prevented full recovery within this time frame, suggesting that repeat bleaching had diminished its recovery capacity. Specifically, P. astreoides was not able to recover protein and carbohydrate concentrations. As energy reserves promote bleaching resistance, failure to recover from annual bleaching within 1 year will likely result in the future demise of heat-sensitive coral species.
Higher central charges and topological boundaries in 2+1-dimensional TQFTs
Creators: name: Kaidi, Justin
name: Komargodski, Zohar
name: Ohmori, Kantaro
name: Seifnashri, Sahand
name: Shao, Shu-Heng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A 2+1-dimensional topological quantum field theory (TQFT) may or may not admit topological (gapped) boundary conditions. A famous necessary, but not sufficient, condition for the existence of a topological boundary condition is that the chiral central charge $c_-$ has to vanish. In this paper, we consider conditions associated with "higher" central charges, which have been introduced recently in the math literature. In terms of these new obstructions, we identify necessary and sufficient conditions for the existence of a topological boundary in the case of bosonic, Abelian TQFTs, providing an alternative to the identification of a Lagrangian subgroup. Our proof relies on general aspects of gauging generalized global symmetries. For non-Abelian TQFTs, we give a geometric way of studying topological boundary conditions, and explain certain necessary conditions given again in terms of the higher central charges. Along the way, we find a curious duality in the partition functions of Abelian TQFTs, which begs for an explanation via the 3d-3d correspondence.
description: 51 pages. v2: minor clarifications and references added
Dispersal as a source of variation in age-specific reproductive strategies in a wild population of lizards
Creators: name: Massot, Manuel
name: Clobert, Jean
name: Cotto, Olivier
name: Ronce, Ophélie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Dispersal syndromes describe the patterns of covariation of morphological, behavioural, and life-history traits associated with dispersal. Studying dispersal syndromes is critical to understanding the demographic and genetic consequences of movements. Among studies describing the association of life-history traits with dispersal, there is anecdotal evidence suggesting that dispersal syndromes can vary with age. Recent theory also suggests that dispersive and philopatric individuals might have different age-specific reproductive efforts. In a wild population of the common lizard (Zootoca vivipara), we investigated whether dispersive and philopatric individuals have different age-specific reproductive effort, survival, offspring body condition, and offspring sex ratio. Consistent with theoretical predictions, we found that young dispersive females have a higher reproductive effort than young philopatric females. Our results also suggest that the early high investment in reproduction of dispersive females trades-off with an earlier onset of senescence than in philopatric females. We further found that young dispersive females produce smaller offspring in lower body condition than do young philopatric females. Overall, our results provide empirical evidence that dispersive and philopatric individuals have different age-specific life-history traits.
The Chinese Open Science Network (COSN): Building an Open Science Community From Scratch
Creators: name: Jin, Haiyang
name: Wang, Qing
name: Yang, Yu-Fang
name: Zhang, Han
name: Gao, Mengyu (Miranda)
name: Jin, Shuxian
name: Chen, Yanxiu (Sharon)
name: Xu, Ting
name: Zheng, Yuan-Rui
name: Chen, Ji
name: Xiao, Qinyu
name: Yang, Jinbiao
name: Wang, Xindi
name: Geng, Haiyang
name: Ge, Jianqiao
name: Wang, Wei-Wei
name: Chen, Xi
name: Zhang, Lei
name: Zuo, Xi-Nian
name: Chuang-Peng, Hu
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Open Science
subject: grassroots network
subject: non-WEIRD
subject: Chinese
subject: equity-diversity-inclusion (EDI)
subject: 000 Informatik, Informationswissenschaft, allgemeine Werke::020 Bibliotheks- und Informationswissenschaften::020 Bibliotheks- und Informationswissenschaften

description: Open Science is becoming a mainstream scientific ideology in psychology and related fields. However, researchers, especially early-career researchers (ECRs) in developing countries, are facing significant hurdles in engaging in Open Science and moving it forward. In China, various societal and cultural factors discourage ECRs from participating in Open Science, such as the lack of dedicated communication channels and the norm of modesty. To make the voice of Open Science heard by Chinese-speaking ECRs and scholars at large, the Chinese Open Science Network (COSN) was initiated in 2016. With its core values being grassroots-oriented, diversity, and inclusivity, COSN has grown from a small Open Science interest group to a recognized network both in the Chinese-speaking research community and the international Open Science community. So far, COSN has organized three in-person workshops, 12 tutorials, 48 talks, and 55 journal club sessions and translated 15 Open Science-related articles and blogs from English to Chinese. Currently, the main social media account of COSN (i.e., the WeChat Official Account) has more than 23,000 subscribers, and more than 1,000 researchers/students actively participate in the discussions on Open Science. In this article, we share our experience in building such a network to encourage ECRs in developing countries to start their own Open Science initiatives and engage in the global Open Science movement. We foresee great collaborative efforts of COSN together with all other local and international networks to further accelerate the Open Science movement.
Evaluation of stochastic flow lines with provisioning of auxiliary material
Creators: name: Helber, Stefan
name: Kellenbrink, Carolin
name: Südbeck, Insa
Publisher: name: Berlin ; Heidelberg ; New York, NY : Springer
Year: 2023
Subjects: subject: Artificial neural network
subject: Automatically guided vehicles
subject: Auxiliary material
subject: Decomposition
subject: Flow line evaluation
subject: Markov chain
subject: Dewey Decimal Classification::600 | Technik::650 | Management

description: Flow lines are often used to perform assembly operations in multi-stage processes. During these assembly operations, components that are relatively small, compared to the work pieces travelling down the flow line, are mounted to the work pieces at a given stage. Those components, or more generally, any kind of auxiliary material, are provisioned to the corresponding production stage in a repetitive but not necessarily deterministic manner using a certain delivery frequency, each time filling the local storage up to a predetermined order-up-to level. Just like random processing times, machine failures, and repairs, the randomness of the provisioning process can impact the long-term throughput of such a flow line. In this paper, we develop a fast and accurate analytical performance evaluation method to estimate the long-term throughput of a Markovian flow line of this type for the practically important case of limited buffer capacities between the production stages. We first give an exact characterization of a two-machine line of that type and show how to determine system state probabilities and aggregate performance measures. Furthermore, we show how to use this two-machine model as the building block of an approximate decomposition approach for longer flow lines. As opposed to previous decomposition approaches, even the state space of the two-machine lines can become so large that an exact solution of the Markov chains can become impractical. We hence show how to set up, train, and use an artificial neural network to replace the Markov chain solver embedded in the decomposition approach, which then leads to an accurate and extremely fast flow line evaluation tool. The proposed methodology is evaluated by a comparison with simulation results and used to characterize the structural patterns describing the behaviour of flow lines of this type. The method can be used to systematically consider the combined impact of the delivery frequency and the local order-up-to levels for the auxiliary material when designing a flow line of this type.
Estimating Fock-state linear optics evolution using coherent states
Creators: name: Lund, Austin P.
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Optical communications
subject: Interferometry
subject: Quantum mechanical systems and processes
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: This paper presents two methods for simulating the interference of bosonic Fock states through linear interferometers using coherent states. The first method repeats the interferometer, injects coherent states in particular modes, and uses symmetric combinations of the outputs to reconstruct the state amplitudes of the Fock-state interference. The second method constructs a new interferometer that can be probed with coherent states on individual inputs to extract the required state amplitudes. The two approaches here show explicitly where the classical computational difficultly arises. In the first approach, the computational hardness is in the measurement post-processing, and in the second approach, it is within the construction of the required state evolution.
Deep Co-Added Sky from Catalina Sky Survey Images
Creators: name: Singhal, Akshat
name: Bhalerao, Varun
name: Mahabal, Ashish A.
name: Vaghmare, Kaustubh
name: Jagade, Santosh
name: Kulkarni, Sumeet
name: Vibhute, Ajay
name: Kembhavi, Ajit K.
name: Drake, Andrew J.
name: Djorgovski, S George
name: Graham, Matthew J.
name: Donalek, Ciro
name: Christensen, Eric
name: Larson, Stephen
name: Beshore, Edward C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A number of synoptic sky surveys are underway or being planned. Typically they are done with small telescopes and relatively short exposure times. A search for transient or variable sources involves comparison with deeper baseline images, ideally obtained through the same telescope and camera. With that in mind we have stacked images from the 0.68~m Schmidt telescope on Mt. Bigelow taken over ten years as part of the Catalina Sky Survey. In order to generate deep reference images for the Catalina Real-time Transient Survey, close to 0.8 million images over 8000 fields and covering over 27000~sq.~deg. have gone into the deep stack that goes up to 3 magnitudes deeper than individual images. CRTS system does not use a filter in imaging, hence there is no standard passband in which the optical magnitude is measured. We estimate depth by comparing these wide-band unfiltered co-added images with images in the $g$-band and find that the image depth ranges from 22.0--24.2 across the sky, with a 200-image stack attaining an equivalent AB magnitude sensitivity of 22.8. We compared various state-of-the-art software packages for co-adding astronomical images and have used SWarp for the stacking. We describe here the details of the process adopted. This methodology may be useful in other panoramic imaging applications, and to other surveys as well. The stacked images are available through a server at Inter-University Centre for Astronomy and Astrophysics (IUCAA).
description: 16 pages, 15 figures
The Gender Gap in Civil State Decorations: A Comparative Study of the Baltic States, 1994-2020
Creators: name: Köker, Philipp
name: Weiher, Nele
name: Schollmeyer, Anja
Publisher: name: Cambridge : Cambridge Univ. Press
Year: 2023
Subjects: subject: Baltic states
subject: gender gap
subject: honors system
subject: merit
subject: state decorations
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::320 | Politik
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::360 | Soziale Probleme, Sozialdienste, Versicherungen

description: Systems of state decorations have often been overlooked by political scientists. However, they are highly indicative of dominant social norms and power differentials. While historical research has highlighted gender disparities in award bestowals in individual countries, comparative perspectives and cross-national analyses are still missing. This article provides the most comprehensive comparative analysis of the gender gap in state decorations. Using an original data set of all 11,559 recipients of civil awards in Estonia, Latvia, and Lithuania from 1994 to 2020, it shows that women received significantly fewer awards than men across the three countries, with only moderate progress over time. Even where women and men were recognized in equal numbers, women remained underrepresented among higher classes of awards and were more likely to be recognized for achievements in stereotypically feminine fields. Our findings contribute to research on gendered institutions and highlight the usefulness of award bestowals as an indicator of sociopolitical phenomena.
Implementation of the SMART protocol for global qubit control in silicon
Creators: name: Hansen, Ingvild
name: Seedhouse, Amanda E.
name: Chan, Kok Wai
name: Hudson, Fay
name: Itoh, Kohei M.
name: Laucht, Arne
name: Saraiva, Andre
name: Yang, Chih Hwan
name: Dzurak, Andrew S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computing based on spins in the solid state allows for densely-packed arrays of quantum bits. While high-fidelity operation of single qubits has been demonstrated with individual control pulses, the operation of large-scale quantum processors requires a shift in paradigm towards global control solutions. Here we report the experimental implementation of a new type of qubit protocol - the SMART (Sinusoidally Modulated, Always Rotating and Tailored) protocol. As with a dressed qubit, we resonantly drive a two-level system with a continuous microwave field, but here we add a tailored modulation to the dressing field to achieve increased robustness to detuning noise and microwave amplitude fluctuations. We implement this new protocol to control a single spin confined in a silicon quantum dot and confirm the optimal modulation conditions predicted from theory. Universal control of a single qubit is demonstrated using modulated Stark shift control via the local gate electrodes. We measure an extended coherence time of $2$ ms and an average Clifford gate fidelity $>99$ $\%$ despite the relatively long qubit gate times ($>15$ $\unicode[serif]{x03BC}$s, $20$ times longer than a conventional square pulse gate), constituting a significant improvement over a conventional spin qubit and a dressed qubit. This work shows that future scalable spin qubit arrays could be operated using global microwave control and local gate addressability, while maintaining robustness to relevant experimental inhomogeneities.
Eventual self-similarity of solutions for the diffusion equation with nonlinear absorption and a point source
Creators: name: Gordon, Peter V.
name: Muratov, Cyrill B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper is concerned with the transient dynamics described by the solutions of the reaction-diffusion equations in which the reaction term consists of a combination of a superlinear power-law absorption and a time-independent point source. In one space dimension, solutions of these problems with zero initial data are known to approach the stationary solution in an asymptotically self-similar manner. Here we show that this conclusion remains true in two space dimensions, while in three and higher dimensions the same conclusion holds true for all powers of the nonlinearity not exceeding the Serrin critical exponent. The analysis requires dealing with solutions that contain a persistent singularity and involves a variational proof of existence of ultra-singular solutions, a special class of self-similar solutions in the considered problem.
Rent price control – yet another great equalizer of economic inequalities? Evidence from a century of historical data
Creators: name: Kholodilin, Konstantin A
name: Kohl, Sebastian
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: economic inequality
subject: inequality
subject: stratification
subject: rent control
subject: 300 Sozialwissenschaften::330 Wirtschaft::330 Wirtschaft

description: The long-run U-shaped patterns of economic inequality are standardly explained by basic economic trends (Piketty’s r > g), taxation policies or ‘great levellers’ such as catastrophes. This article argues that housing policy, and particularly rent control, is a neglected explanatory factor in understanding macro inequality. We hypothesize that rent control could decrease overall housing wealth, lower incomes of generally richer landlords and increase disposable incomes of generally poorer tenants. Using original long-run data for up to 16 countries (1900–2016), we show that rent controls lowered wealth-to-income ratios, top income shares, Gini coefficients, rents and rental expenditure. Overall, rent controls need to be strict in order to have tangible effects, and only the stricter historical rent controls did significantly reduce inequalities. The study argues that housing policies should generally receive more attention in understanding economic inequalities.
Decay for Skyrme wave maps
Creators: name: Alejo, Miguel A.
name: Maulén, Christopher
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the decay problem for global solutions of the Skyrme and Adkins-Nappi equations. We prove that the energy associated to any bounded energy solution of the Skyrme (or Adkins-Nappi) equation decays to zero outside the light cone (in the radial coordinate). Furthermore, we prove that suitable polynomial weighted energies of any small solution decays to zero when these energies are bounded. The proof consists of finding three new virial type estimates, one for the exterior of the light cone, based on the energy of the solution, and a more subtle virial identity for the weighted energies, based on a modification of momentum type quantities.
description: 27 pages
Values and National Identification in Minority and Majority Youth: Longitudinal Multi-Study Findings
Creators: name: Benish-Weisman, Maya
name: Daniel, Ella
name: Elizarov, Einat
name: Sverdlik, Noga
name: Titzmann, Peter F.
Publisher: name: New York, NY [u.a.] : Springer Science + Business Media B.V.
Year: 2024
Subjects: subject: Adolescents
subject: Identity
subject: Majority
subject: Minority
subject: National identification
subject: Values
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: Collective identification is vital for adolescents, fostering well-being and connection, but scant attention has been given to drivers of national identification and their contextual variations in youth. To address this, two longitudinal studies examined how values, as guiding goals defining what individuals consider important in their lives, relate to the trajectory of national identification in majority and minority youth. Study 1 (N = 568; Mage = 16.24, SD = 0.71) and Study 2 (N = 678; Mage = 13.78, SD = 0.73) focused on majority youth (Jewish-Israelis), while Study 2 also included minority (Arab citizens of Israel). The findings highlight values as important motivators of national identification over time. Conservation values, emphasizing the preservation of the status quo and a preference for stability, were prominent motivators for the majority of adolescents. In contrast, power values, which center around climbing the social ladder and accumulating wealth, held greater significance among their minority counterparts; however, both sets of values correlated with increased national identification. The discussion touches on motivations underlying national identification, their contextual diversity, and implications for future studies.
Elevational differences in developmental plasticity determine phenological responses of grasshoppers to recent climate warming
Creators: name: Kirk, Evan M.
name: Buckley, Lauren B.
name: Kingsolver, Joel G.
name: Nufio, César R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Annual species may increase reproduction by increasing adult body size through extended development, but risk being unable to complete development in seasonally limited environments. Synthetic reviews indicate that most, but not all, species have responded to recent climate warming by advancing the seasonal timing of adult emergence or reproduction. Here, we show that 50 years of climate change have delayed development in high-elevation, season-limited grasshopper populations, but advanced development in populations at lower elevations. Developmental delays are most pronounced for early-season species, which might benefit most from delaying development when released from seasonal time constraints. Rearing experiments confirm that population, elevation and temperature interact to determine development time. Population differences in developmental plasticity may account for variability in phenological shifts among adults. An integrated consideration of the full life cycle that considers local adaptation and plasticity may be essential for understanding and predicting responses to climate change.
On the Meaning of the “P Factor” in Symmetrical Bifactor Models of Psychopathology: Recommendations for Future Research From the Bifactor-(S−1) Perspective
Creators: name: Heinrich, Manuel
name: Geiser, Christian
name: Zagorscak, Pavle
name: Burns, G. Leonard
name: Bohn, Johannes
name: Becker, Stephen P.
name: Eid, Michael
name: Beauchaine, Theodore P.
name: Knaevelsrud, Christine
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: P factor
subject: the general factor of psychopathology
subject: bifactor
subject: bifactor-(S−1)
subject: anomalous results
subject: collapsing factors
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: Symmetrical bifactor models are frequently applied to diverse symptoms of psychopathology to identify a general P factor. This factor is assumed to mark shared liability across all psychopathology dimensions and mental disorders. Despite their popularity, however, symmetrical bifactor models of P often yield anomalous results, including but not limited to nonsignificant or negative specific factor variances and nonsignificant or negative factor loadings. To date, these anomalies have often been treated as nuisances to be explained away. In this article, we demonstrate why these anomalies alter the substantive meaning of P such that it (a) does not reflect general liability to psychopathology and (b) differs in meaning across studies. We then describe an alternative modeling framework, the bifactor-(S−1) approach. This method avoids anomalous results, provides a framework for explaining unexpected findings in published symmetrical bifactor studies, and yields a well-defined general factor that can be compared across studies when researchers hypothesize what construct they consider “transdiagnostically meaningful” and measure it directly. We present an empirical example to illustrate these points and provide concrete recommendations to help researchers decide for or against specific variants of bifactor structure.
Microstructure in matrix elements
Creators: name: Blommaert, Andreas
name: Usatyuk, Mykhaylo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the simple model of Pennington, Shenker, Stanford and Yang for modeling the density matrix of Hawking radiation, but further include dynamics for EOW branes behind the horizon. This allows interactions that scatter one interior state to another, and also allows EOW loops. At strong coupling, we find that EOW states are no longer random; the ensemble has collapsed, and coupling constants encode the microscopic matrix elements of Hawking radiation. This suggests strong interior dynamics are important for understanding evaporating black holes, without any ensemble average. In this concrete model the density matrix of the radiation deviates from the thermal state, small off-diagonal fluctuations encode equivalences between naively orthogonal states, and bound the entropy from above. For almost evaporated black holes the off-diagonal terms become as large as the diagonal ones, eventually giving a pure state. We also find the unique analytic formula for all Renyi entropies.
description: 30 pages + appendices; v2: updated acknowledgements
بررسی تأثیر شیوه تدریس مبتنی بر دستکاری قیود تکلیف بر رفتارهای حملهای فوتبالیستهای نوجوان مدارس فوتبال
Publisher: name: دانشگاه کردستان
Year: 2022

description: هدف پژوهش حاضر بررسی تأثیر تغییر قیود تکلیف بر رفتار حمله ای فوتبالیست های نوجوان بود. ١٠ بازیکن زیر ١٣ سال (٣/٢ ± ٨/١١ سال) به دو تیم تقسیم شدند. طی سه جلسه به فواصل استراحت یک هفته ­ای، تیم­ها (٤×٤ با یک دروازه بان) در سه شرایط متفاوت و طی نیمه های ٨ دقیقه ­ای با ٣ دقیقه استراحت با یکدیگر مسابقه می دادند. برای بررسی رفتار حمله ای دو تیم، شاخص های عملکرد ساده و ترکیبی آن ها توسط مقیاس ارزیابی عملکرد حمله ای بررسی شدند. برای بررسی روایی درون آزمونگر، ٢٠درصد کل داده ها به فاصله یک هفته­ای مشاهده و نشانه گذاری شدند. نتایج کاپای وزنی توافق ٨٤ تا ٩٩ درصد بودند. نتایج نشان دادند که تغییر قیود اثری معنی دار بر شاخص های حمله ای ساده و ترکیبی داشت. در شرایط پاس دو ضرب، «میزان مشارکت جمعی» بیشتر از دو شرایط دیگر بود. شاخص «مداخله فردی بر توپ» در شرایط سه پاس بزرگ تر از دو شرایط دیگر بود. شرایط بازی آزاد نیز موجب اتخاذ رویکرد فردی بیشتری از بقیه شرایط شد. بنابراین، دست کاری کردن قیود تکلیف می تواند مربیان را به سوی رفتار دلخواه سوق داده و موجب مشارکت فعالانه بازیکنان نوجوان در فرآیند حل مسئله گردد
گامی برای اعتباربخشی الگوی پذیرش و استفاده از فناوری دیجیتال توسط معلمان
Publisher: name: دانشگاه کردستان
Year: 2022

description: پژوهش حاضر با هدف تعیین اعتباربخشی الگوی پذیرش و استفاده از فناوری دیجیتال توسط معلمان صورت گرفته است. روش پژوهش در این مطالعه، مرور سیستماتیک می باشد. ﺟﺎﻣﻌﮥ آﻣﺎری اﯾﻦ ﭘﮋوﻫﺶ ﺷﺎﻣﻞ ﺗﻤﺎﻣﯽ ﻣﻘﺎﻻت ﻣﻌﺘﺒﺮ ﻋﻠﻤﯽ و رساله های دکتری و پایان نامه های کارشناسی ارشد در زﻣﯿﻨﮥ پذیرش و استفاده از تکنولوژی دیجیتال توسط معلمان ﺑﻮد کﻪ با توجه  به جست وجوی ﻣﻨﻈﻢ در پایگاه های اﻃﻼﻋﺎﺗﯽ جمع آوری گردید. بر اساس ﻣﻌﯿﺎرﻫﺎی ورود ﺗﻌﺪاد 86 ﻣﻘﺎﻟه و پایان نامه ﺷﻨﺎﺳﺎﯾﯽ و در ﻧﻬﺎﯾﺖ ﺑﺮ اﺳﺎس ﻣﻌﯿﺎرﻫﺎی ﺧﺮوج ﺗﻌﺪاد 59 ﻣﻘﺎﻟه­ و پایان نامه ﺑﺮای ﺗﺤﻠﯿﻞ ﻧﻬﺎﯾﯽ اﻧﺘﺨﺎب ﺷﺪﻧﺪ. جهت تحلیل مصاحبه ها، از تحلیل محتوای کیفی و برای تجزیه وتحلیل متون از شش مرحله گاف (2013) برای تحلیل داده ها استفاده شد. برای تعیین روایی محیط طراحی شده نیز از نسبت روایی محتوا (سی.وی.آر)مقدار تعیین شده در جدول لاوشه بر اساس تعداد شرکت ­کنندگان در آزمون استفاده شد. در این پژوهش 4 مضمون زمینه فردی، محیطی، فناوری و سازمانی به دست آمد. بر اساس مقادیر جدول لاوشه و با توجه  به تعداد مشارکت کنندگان (12 نفر)، سؤالاتی که مقدار نسبت روایی محتوای آن ها بیش از 56/0 بود، قابل قبول هستند. میانگین ضریب لاوشه(سی.وی.آر) برای کل سؤالات الگوی پیشنهادی 83/0 برآورد شد. اعتبار الگوی پذیرش و استفاده از تکنولوژی دیجیتال توسط معلمان، معتبر شناخته شد
Analytic States in Quantum Field Theory on Curved Spacetimes
Creators: name: Strohmaier, Alexander
name: Witten, Edward
Publisher: name: Cham (ZG) : Springer International Publishing AG
Year: 2024
Subjects: subject: operators
subject: connection
subject: algebras
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We discuss high energy properties of states for (possibly interacting) quantum fields in curved spacetimes. In particular, if the spacetime is real analytic, we show that an analogue of the timelike tube theorem and the Reeh–Schlieder property hold with respect to states satisfying a weak form of microlocal analyticity condition. The former means the von Neumann algebra of observables of a spacelike tube equals the von Neumann algebra of observables of a significantly bigger region that is obtained by deforming the boundary of the tube in a timelike manner. This generalizes theorems by Araki (Helv Phys Acta 36:132–139, 1963) and Borchers (Nuovo Cim (10) 19:787–793, 1961) to curved spacetimes.
(Ca,Na)(Zn,Mn)2As2: a new spin & charge doping decoupled diluted ferromagnetic semiconductor with hexagonal CaAl2Si2 structure
Creators: name: Zhao, K.
name: Chen, B. J.
name: Deng, Z.
name: Han, W.
name: Zhao, G. Q.
name: Zhu, J. L.
name: Liu, Q. Q.
name: Wang, X. C.
name: Frandsen, B.
name: Liu, L.
name: Cheung, S.
name: Ning, F. L.
name: Munsie, T. J. S.
name: Medina, T.
name: Luke, G. M.
name: Carlo, J. P.
name: Munevar, J.
name: Zhang, G. M.
name: Uemura, Y. J.
name: Jin, C. Q.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Here we report the successful synthesis of a spin- & charge-decoupled diluted magnetic semiconductor (Ca,Na)(Zn,Mn)2As2, crystallizing into the hexagonal CaAl2Si2 structure. The compound shows a ferromagnetic transition with a Curie temperature up to 33 K with 10% Na doping, which gives rise to carrier density of np~10^20 cm^-3. The new DMS is a soft magnetic material with HC<400 Oe. The anomalous Hall effect is observed below the ferromagnetic ordering temperature. With increasing Mn doping, ferromagnetic order is accompanied by an interaction between the local spin and mobile charge, giving rise to a minimum in resistivity at low temperatures and localizing the conduction electrons. The system provides an ideal platform for studying the interaction of the local spins and conduction electrons.
description: 23 Pages 1 Table 4 Figures
Drone affective politics against state impunity: The case of 43 disappeared students in Ayotzinapa, Mexico
Creators: name: Suarez Estrada, Marcela
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: actor-network state
subject: affective politics
subject: Ayotzinapa
subject: drone aesthetics
subject: new materialism
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft

description: This article analyzes some implications of new drone aesthetics involved in affective politics against state impunity in social conflicts. Whereas the literature on media, war and conflict has been centered around the war aesthetics of military drones, the author argues that civilian drones can mobilize affective politics – expressed, for example, in the aestheticization of shame, rage and the subversion of fear – as a means of political communication with and against the state. Further, she proposes that the present focus on drone aesthetics should be expanded to also account for the political affects that aesthetic sensory perceptions mobilize. Drawing on actor-network theory and new materialism, the article takes the disappearance of 43 students in Ayotzinapa (Mexico) as an exemplary case of state impunity in the context of the war against drugs and social conflict. By means of a digital ethnography of the social collective project Rexiste, the author analyzes its public interventions deploying a civil drone named ‘Droncita’, which sought to generate an aesthetics of affect against state impunity. The article contributes toward expanding investigation of (civilian) drone aesthetics and the mobilization of affective politics in the literature on war and social conflicts and collective action.
Evolutionary rescue and the coexistence of generalist and specialist competitors: an experimental test
Creators: name: Pfennig, David W.
name: Burch, Christina L.
name: Bono, Lisa M.
name: Gensel, Catharine L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Competition for resources is thought to play a critical role in both the origins and maintenance of biodiversity. Although numerous laboratory evolution experiments have confirmed that competition can be a key driver of adaptive diversification, few have demonstrated its role in the maintenance of the resulting diversity. We investigate the conditions that favour the origin and maintenance of alternative generalist and specialist resource-use phenotypes within the same population. Previously, we confirmed that competition for hosts among φ6 bacteriophage in a mixed novel (non-permissive) and ancestral (permissive) host microcosm triggered the evolution of a generalist phenotype capable of infecting both hosts. However, because the newly evolved generalists tended to competitively exclude the ancestral specialists, coexistence between the two phenotypes was rare. Here, we show that reducing the relative abundance of the novel host slowed the increase in frequency of the generalist phenotype, allowing sufficient time for the specialist to further adapt to the ancestral host. This adaptation resulted in ‘evolutionary rescue’ of the specialists, preventing their competitive exclusion by the generalists. Thus, our results suggest that competition promotes both the origin and maintenance of biodiversity when it is strong enough to favour a novel resource-use phenotype, but weak enough to allow adaptation of both the novel and ancestral phenotypes to their respective niches.
Modified gravitational wave propagation and the binary neutron star mass function
Creators: name: Finke, Andreas
name: Foffa, Stefano
name: Iacovelli, Francesco
name: Maggiore, Michele
name: Mancarella, Michele
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Modified gravitational wave (GW) propagation is a generic phenomenon in modified gravity. It affects the reconstruction of the redshift of coalescing binaries from the luminosity distance measured by GW detectors, and therefore the reconstruction of the actual masses of the component compact stars from the observed (`detector-frame') masses. We show that, thanks to the narrowness of the mass distribution of binary neutron stars, this effect can provide a clear signature of modified gravity, particularly for the redshifts explored by third generation GW detectors such as Einstein Telescope and Cosmic Explorer.
description: v2: expanded version, to appear in Physics of the Dark Universe
The psychedelic afterglow phenomenon: a systematic review of subacute effects of classic serotonergic psychedelics
Creators: name: Evens, Ricarda
name: Schmidt, Marianna Elisa
name: Majić, Tomislav
name: Schmidt, Timo Torsten
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: afterglow
subject: hallucinogen
subject: psychedelics
subject: serotonergic
subject: subacute
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: Background: Classic serotonergic psychedelics have anecdotally been reported to show a characteristic pattern of subacute effects that persist after the acute effects of the substance have subsided. These transient effects, sometimes labeled as the ‘psychedelic afterglow’, have been suggested to be associated with enhanced effectiveness of psychotherapeutic interventions in the subacute period. Objectives: This systematic review provides an overview of subacute effects of psychedelics. Methods: Electronic databases (MEDLINE, Web of Science Core Collection) were searched for studies that assessed the effects of psychedelics (LSD, psilocybin, DMT, 5-MeO-DMT, mescaline, or ayahuasca) on psychological outcome measures and subacute adverse effects in human adults between 1950 and August 2021, occurring between 1 day and 1 month after drug use. Results: Forty-eight studies including a total number of 1,774 participants were eligible for review. Taken together, the following subacute effects were observed: reductions in different psychopathological symptoms; increases in wellbeing, mood, mindfulness, social measures, spirituality, and positive behavioral changes; mixed changes in personality/values/attitudes, and creativity/flexibility. Subacute adverse effects comprised a wide range of complaints, including headaches, sleep disturbances, and individual cases of increased psychological distress. Discussion: Results support narrative reports of a subacute psychedelic ‘afterglow’ phenomenon comprising potentially beneficial changes in the perception of self, others, and the environment. Subacute adverse events were mild to severe, and no serious adverse events were reported. Many studies, however, lacked a standardized assessment of adverse effects. Future studies are needed to investigate the role of possible moderator variables and to reveal if and how positive effects from the subacute window may consolidate into long-term mental health benefits.
Introduction: Axel Honneth’s “The Working Sovereign”
Creators: name: Schmidt, Christian
name: Jaeggi, Rahel
name: Celikates, Robin
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Alienation
subject: democracy
subject: labor
subject: political theory
subject: work
subject: 100 Philosophie und Psychologie::100 Philosophie::102 Verschiedenes

description: In his 2021 Walter Benjamin Lectures, Axel Honneth questioned the displacement of work from the center of contemporary political theories. This special issue collects an interview with Axel Honneth on central theses of his lectures and a number of commentaries that discuss issues like Honneth’s extended definition of work, his inclusion of long neglected care activities in the definition of work, the requirements for non-detrimental, meaningful work, Honneth’s criticism of contemporary trends in the division of labor, as well as his rejection of traditional critiques of working relations and conditions such as above all the critique of alienation. The special issue closes with a rejoinder by Axel Honneth.
Natural selection on floral morphology can be influenced by climate
Creators: name: Campbell, D. R.
name: Powers, J. M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Climate has the potential to influence evolution, but how it influences the strength or direction of natural selection is largely unknown. We quantified the strength of selection on four floral traits of the subalpine herb Ipomopsis sp. in 10 years that differed in precipitation, causing extreme temporal variation in the date of snowmelt in the Colorado Rocky Mountains. The chosen floral traits were under selection by hummingbird and hawkmoth pollinators, with hawkmoth abundance highly variable across years. Selection for flower length showed environmental sensitivity, with stronger selection in years with later snowmelt, as higher water resources can allow translation of pollination success into fitness based on seed production. Selection on corolla width also varied across years, favouring narrower corolla tubes in two unusual years with hawkmoths, and wider corollas in another late snowmelt year. Our results illustrate how changes in climate could alter natural selection even when the primary selective agent is not directly influenced.
Construction of Arbitrary Robust One-Qubit Operations Using Planar Geometry
Creators: name: Ichikawa, Tsubasa
name: Filgueiras, Jefferson G.
name: Bando, Masamitsu
name: Kondo, Yasushi
name: Nakahara, Mikio
name: Suter, Dieter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show how to construct an arbitrary robust one-qubit unitary operation with a control Hamiltonian of $A_x(t) σ_x + A_y(t) σ_y$, where $σ_i$ is a Pauli matrix and $A_i(t)$ is piecewise constant. Our method, based on planar geometry, admits a simple and intuitive interpretation. Furthermore, the total execution time and the number of elementary gates of the obtained sequence are comparable to those of the shortest known concatenated composite pulses.
description: 7 pages, 4 figures. To appear in PRA
Ocean acidification impairs crab foraging behaviour
Creators: name: Grabowski, Jonathan H.
name: Dodd, Luke F.
name: Piehler, Michael F.
name: Westfield, Isaac
name: Ries, Justin B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Anthropogenic elevation of atmospheric CO2 is driving global-scale ocean acidification, which consequently influences calcification rates of many marine invertebrates and potentially alters their susceptibility to predation. Ocean acidification may also impair an organism's ability to process environmental and biological cues. These counteracting impacts make it challenging to predict how acidification will alter species interactions and community structure. To examine effects of acidification on consumptive and behavioural interactions between mud crabs (Panopeus herbstii) and oysters (Crassostrea virginica), oysters were reared with and without caged crabs for 71 days at three pCO2 levels. During subsequent predation trials, acidification reduced prey consumption, handling time and duration of unsuccessful predation attempt. These negative effects of ocean acidification on crab foraging behaviour more than offset any benefit to crabs resulting from a reduction in the net rate of oyster calcification. These findings reveal that efforts to evaluate how acidification will alter marine food webs should include quantifying impacts on both calcification rates and animal behaviour.