cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Backreaction in trans-Planckian cosmology: renormalization, trace anomaly and selfconsistent solutions
Creators: name: Nacir, Diana López
name: Mazzitelli, Francisco D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the semiclassical Einstein equations for quantum scalar fields satisfying modified dispersion relations. We first discuss in detail the renormalization procedure based on adiabatic subtraction and dimensional regularization. We show that, contrary to what expected from power counting arguments, in 3+1 dimensions the subtraction involves up to the fourth adiabatic order even for dispersion relations containing higher powers of the momentum. Then we analyze the dependence of the trace of the renormalized energy momentum tensor with the scale of new physics, and we recover the usual trace anomaly in the appropriate limit. We also find selfconsistent de Sitter solutions for dispersion relations that contain up to the fourth power of the momentum. Using this particular example, we also discuss the possibility that the modified dispersion relation can be mimicked at lower energies by an effective initial state in a theory with the usual dispersion relation.
description: 19 pages, 3 figures
Key Points of Breeding and Cultivation Techniques of Wushan Crisp Plum: a New Cultivar of Green Crisp Plum
Creators: name: XIONG Wei
name: HUANG Ming
name: ZENG Ming
name: KOU Linling
name: KONG Wenbin
name: TANG Jun
name: XIANG Fang
name: HE Tao
name: XIONG Wei
name: HUANG Ming
name: ZENG Ming
name: KOU Linling
name: KONG Wenbin
name: TANG Jun
name: XIANG Fang
name: HE Tao
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Plum, New cultivar, Wushan crisp plum, Variety breeding

description: Wushan crisp plum is a new cultivar of green crisp plum with dignified fruit shape, crisp and tender flesh, pit separability and sweet taste. It is bred from natural bud mutant of Jiang’an Dabaili, a local green crisp plum cultivar by Wushan County Fruit Industry Development Center, Southwest University and Chongqing Agricultural Technology Extension Station. Wushan crisp plum has won the gold award in the National High-quality Plum and Apricot Appraise and Elect and the tile of “the king of fruit” in the “Three-Gorge Cup” High-quality Crisp Plum Appraise and Elect. In the southwestern region of China, the planting area of Wushan crisp plum has been extended to 33 000 ha. The cultivar has strong robust and fast growth. In the area along the Yangtze River in the Three Gorges Reservoir area of ​​Chongqing, it ripens from early to middle July. The fruit is ovoid and of medium size, with average longitudinal diameter of 3.3 cm, average horizontal diameter of 4.0 cm, average single fruit mass of 37.2g, carpopodium length of 1.5 cm, and carpopodium diameter of 0.1 cm. The top of the fruit is slightly concave. The peel is green to green-yellow in background color and medium in thickness, with obvious fruit dots and thick white fruit wax. The flesh is light yellow, compact, short in fiber length, juicy, crisp, tender, pure and sweet, with soluble solids content of 12%-15%, titratable acid content of 0.43%-0.72% and vitamin C content of 6.12-8.99 mg/100 g. The pit is small, separable, and oblate. The percentage of edible flesh is up to 94.80% - 96.88%. There is no obvious pre-harvest cracking and intra-fruit pectin. The cultivar is mid-ripening and high in yield. In the firm ripe stage, the flesh is crunchy; and after entering the soft ripe stage, the flesh becomes powdery, and the hardness decreases. At room temperature, the fruit is not resistant to storage and transportation. Wushan crisp plum is tolerant to the climate with high temperature, high humidity and less sunshine, with good adaptability. It is suitable for promoting in the upper reaches of Yangtze River within 180-1 000 m elevation.
Sapioemotionality as a New Attribute in Socio-Cultural Studies
Creators: name: Pishghadam, Reza
name: Ebrahimi, Shima
name: Miri, Mir Abdullah
name: Shayesteh, Shaghayegh
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 440101
subject: Anthropology of development
classificationCode: 440105
subject: Linguistic anthropology
classificationCode: 440107
subject: Social and cultural anthropology

description: Given the significance of people’s attitudes in shaping the dominant culture of a society, this study intends to see how people react or are emotionally aroused when they see an intelligent person (i.e., sapioemotionality), and then examine the underlying cultulinguistic reasons for different degrees of sapioemotionality in the Persian culture. To do so, first, a sapioemotionality scale was developed and validated using 440 individuals. For further analysis, 68 interviews were conducted and a list of Persian, knowledge-related utterances/expressions were extracted to cross-validate the quantitative findings. Structural equation modeling (SEM) and t-test were used to analyze the quantitative data, and cultuling (culture + language) analysis was employed to examine the qualitative data. The results substantiated the validity of the proposed scale, revealing that the level of sapioemotionality is dwindling in Iranian society. Cultuling analysis, confirming the low level of sapioemotionality, espoused the quantitative findings. In the end, the results were discussed, and a number of suggestions were made to shed more light on sapioemotionality.
A Numerical Study of Gluon Scattering Amplitudes in N=4 Super Yang-Mills Theory at Strong Coupling
Creators: name: Dobashi, Suguru
name: Ito, Katsushi
name: Iwasaki, Koh
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study gluon scattering amplitudes in N=4 super Yang-Mills theory at strong coupling via the AdS/CFT correspondence. We solve numerically the discretized Euler-Lagrange equations on the square worldsheet for the minimal surface with light-like boundaries in AdS spacetime. We evaluate the area of the surface for the 4, 6 and 8-point amplitudes using worldsheet and radial cut-off regularizations. Their infrared singularities in the cut-off regularization are found to agree with the analytical results near the cusp less than 5% at 520x520 lattice points.
description: Latex, 23 pages, 19 figures
The evolving radio jet from the neutron star X-ray binary 4U 1820$-$30
Creators: name: Russell, T. D.
name: Degenaar, N.
name: Eijnden, J. van den
name: Del Santo, M.
name: Segreto, A.
name: Altamirano, D.
name: Beri, A.
name: Trigo, M. Diaz
name: Miller-Jones, J. C. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The persistently bright ultra-compact neutron star low-mass X-ray binary 4U 1820$-$30 displays a $\sim$170 d accretion cycle, evolving between phases of high and low X-ray modes, where the 3 -- 10 keV X-ray flux changes by a factor of up to $\approx 8$. The source is generally in a soft X-ray spectral state, but may transition to a harder state in the low X-ray mode. Here, we present new and archival radio observations of 4U 1820$-$30 during its high and low X-ray modes. For radio observations taken within a low mode, we observed a flat radio spectrum consistent with 4U 1820$-$30 launching a compact radio jet. However, during the high X-ray modes the compact jet was quenched and the radio spectrum was steep, consistent with optically-thin synchrotron emission. The jet emission appeared to transition at an X-ray luminosity of $L_{\rm X (3-10 keV)} \sim 3.5 \times 10^{37} (D/\rm{7.6 kpc})^{2}$ erg s$^{-1}$. We also find that the low-state radio spectrum appeared consistent regardless of X-ray hardness, implying a connection between jet quenching and mass accretion rate in 4U 1820$-$30, possibly related to the properties of the inner accretion disk or boundary layer.
description: 6 pages, 2 Figures. Online supplementary information supplied in the appendix. Accepted for publication by MNRAS Letters
Introduction Performance of New Labor-saving Grape Variety Miguang in Southern Guangxi and Its Two-harvest-a-year Cultivation Technique
Creators: name: HAN Jiayu
name: ZHANG Ying
name: CAO Xiongjun
name: GUO Rongrong
name: LIN Ling
name: CHENG Changfu
name: HAN Jiayu
name: ZHANG Ying
name: CAO Xiongjun
name: GUO Rongrong
name: LIN Ling
name: CHENG Changfu
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Labor-saving grape, Miguang, Two-harvest-a-year, Introduction

description: In order to alleviate the difficulty of labor employment for grape cultivation Guangxi, Nanning Comprehensive Experiment Station of China Grape Industry Technology System introduced the labor-saving variety Miguang, made an observation and record of the botanical characteristics, fruit traits, phenology, disease resistance, and yield of the new grape variety. Finally, it summarized the two-harvest-a-year cultivation technique of the labor-saving grape variety Miguang.
Light baryonium spectrum
Creators: name: Wan, Bing-Dong
name: Zhang, Sheng-Qi
name: Qiao, Cong-Feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We evaluate the light baryonium spectrum, viz. the baryon-antibaryon states, in the framework of QCD sum rules. The nonperturbative contributions up to dimension 12 are taken into account. Numerical results indicate that there might exist eight possible light baryonium states, i.e. $p$-$\bar{p}$, $Λ$-$\barΛ$, $Σ$-$\barΣ$, and $Ξ$-$\barΞ$ with quantum numbers of $0^{-+}$ and $1^{--}$. For the $Λ$-$\barΛ$, $Σ$-$\barΣ$, and $Ξ$-$\barΞ$ states, their masses are found above the corresponding dibaryon thresholds, while the masses of $p$-$\bar{p}$ states are not. The possible baryonium decay modes are analyzed, which are hopefully measurable in BESIII, BELLEII, and LHCb experiments.
description: 32 pages, 4 figures, accepted by PRD
CADE PAINEL INTERNACIONAL
Creators: name: Alexandre Cordeiro Macedo
name: Paulo Eduardo Silva de Oliveira
name: Vinicius Eloy dos Reis
name: William José da Conceição Marques
name: Leonardo de Oliveira Alves Sanches Lima
name: Alessandro Lustosa Seixas Pinheiro
name: Cristiane de Freitas Leal
name: Felipe Alberto Moreira
name: Helio Ribeiro da Costa
name: Jorge Luiz Hachem Vasconcelos
name: Wendel Sousa de Anchieta
name: Márcia Abrahão Moura
name: Maria Emília Machado Telles Walter
name: Rafael Timóteo de Sousa Júnior
name: Edna Dias Canedo
name: Georges Daniel Amvame Nze
name: Valério Aymore Martins
name: Adailton Amaro Nunes
name: Alessandra de Vasconcelos Sales
name: Aline Lima da Silva
name: Ana Beatriz de Sousa Monteiro
name: Ana Flavia Araújo Santana
name: André Luiz Chaves da Silva
name: Bruno Justino Garcia Praciano
name: Caroline Emanuele da Silva Sousa
name: Danilo Freire Holanda de Paiva
name: Denise Mitie Taketomi
name: Edle Marcio dos Santos Silva
name: Eduardo Drumond Soares
name: Fábio Lúcio Lopes de Mendonça
name: Felipe Evangelista dos Santos
name: Felipe Lobão Lima
name: Guilherme Pereira Paiva
name: Hugo Bartolomeu Ferreira
name: Ian Porto e Melo
name: Igor de Almeida Gentil
name: Isabela de Lima Silva
name: Italo Eduardo Dias Frota
name: Izadora Oliveira Linhares
name: Jeanne Louize Emygdio
name: Julia Jamile de Oliveira Gonçalves
name: Karen Ferreira Machado
name: Lincoln Abreu Barbosa
name: Lohana Salustiano Cardoso
name: Luiz Fernando Santos de Araujo Caduda
name: Marcelo Dos Santos Vianna
name: Marcio Junior Vieira
name: Marcos Vinicius da Silva Souza
name: Mateus Alves Dantas
name: Noely Gomes de Lima
name: Paulo Henrique Batista Rodrigues
name: Rafael de Arruda Faria
name: Renato Carauta Ribeiro
name: Rogerio de Oliveira Costa
name: Thays de Oliveira Coelho
name: Thiago Augusto Montenegro Pestana
name: Vanessa Coelho Ribeiro
name: Welber Santos de Oliveira
name: Zaquel Isaque Alves Cabral
Publisher: name: Zenodo
Year: 2022

description: Pesquisa Aplicada com fundamento no estudo de necessidades, análise informacional, concepção, prototipação e experimentação com vistas à inovação tecnológica e de processos no domínio da Defesa Econômica para o Conselho Administrativo de Defesa Econômica – Cade.
Gamma-Ray Studies of Blazars: Synchro-Compton Analysis of Flat Spectrum Radio Quasars
Creators: name: Dermer, Charles D.
name: Finke, Justin D.
name: Krug, Hannah
name: Boettcher, Markus
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We extend a method for modeling synchrotron and synchrotron self-Compton radiations in blazar jets to include external Compton processes. The basic model assumption is that the blazar radio through soft X-ray flux is nonthermal synchrotron radiation emitted by isotropically-distributed electrons in the randomly directed magnetic field of outflowing relativistic blazar jet plasma. Thus the electron distribution is given by the synchrotron spectrum, depending only on the Doppler factor $δ_{\rm D}$ and mean magnetic field $B$, given that the comoving emission region size scale $R_b^\prime \lesssim c \dD t_v/(1+z)$, where $t_v$ is variability time and $z$ is source redshift. Generalizing the approach of Georganopoulos, Kirk, and Mastichiadis (2001) to arbitrary anisotropic target radiation fields, we use the electron spectrum implied by the synchrotron component to derive accurate Compton-scattered $γ$-ray spectra throughout the Thomson and Klein-Nishina regimes for external Compton scattering processes. We derive and calculate accurate $γ$-ray spectra produced by relativistic electrons that Compton-scatter (i) a point source of radiation located radially behind the jet, (ii) photons from a thermal Shakura-Sunyaev accretion disk and (iii) target photons from the central source scattered by a spherically-symmetric shell of broad line region (BLR) gas. Calculations of broadband spectral energy distributions from the radio through $γ$-ray regimes are presented, which include self-consistent $γγ$ absorption on the same radiation fields that provide target photons for Compton scattering. Application of this baseline flat spectrum radio/$γ$-ray quasar model is considered in view of data from $γ$-ray telescopes and contemporaneous multi-wavelength campaigns.
description: Accepted by ApJ. 22 pages, 12 figures, 2 tables. Minor revisions to figures and text
Nonthermal Radiation of the Extreme TeV Blazar 1ES 0229+200 from Electromagnetic Cascades on Infrared Photon Field
Creators: name: Dzhatdoev, Timur
name: Galkin, Vladimir
name: Podlesnyi, Egor
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Extreme TeV blazars (ETBs) are active galactic nuclei with jets presumably pointing towards the observer having their intrinsic spectral energy distributions (SEDs) peaked at an energy in excess of 1 TeV. These sources typically reveal relatively weak and slow variability as well as an extremely high frequency of the low-energy SED peak compared to other classes of blazars. It proved to be exceedingly hard to incorporate all these peculiar properties of ETBs into the framework of a reasonable $γ$-ray emission model. ETB physics have recently attracted great attention in the astrophysical community, underlying the importance of the development of self-consistent ETB emission model(s). We propose a new scenario for the formation of X-ray and $γ$-ray spectra of ETBs assuming that electromagnetic cascades develop in the infrared photon field surrounding the central blazar engine. This scenario does not invoke compact fast-moving sources of radiation (so-called "blobs"), in agreement with the apparent absence of fast and strong variability of ETBs. For the case of the extreme TeV blazar 1ES 0229+200 we propose a specific emission model in the framework of the considered scenario. We demonstrate that this model allows to obtain a good fit to the measured SED of 1ES 0229+200.
description: 15 pages, 4 figures, 2 tables. Accepted for publication in Universe on 2nd of December 2021; published in Universe on 14th of December 2021. This is author's version and not the final typeset
ON THE QUESTION OF CONVERGENCE SOLUTIONS NUMERICAL NONSTATIONARY PROBLEMS OF MODELING THERMOMECHANICS
Creators: name: Domichev, K.
name: Petrov, A.
name: Steblyanko, P.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: mathematical modeling
convergence of solutions
estimation of accuracy of calculations
choice of steps of a grid
spline.

description: The paper considers the convergence of solutions in the problems of numerical modeling of thermo-mechanics. A method for estimating the convergence of the accuracy of calculations is proposed, which ultimately leads to the question of a reasonable choice of integration steps both in time and in coordinates.
Bridging the gap: the role of nostalgia in mitigating existential
Creators: name: Pillarisetty, Simran
Publisher: name: No Publisher Supplied
Year: 2024

description: Feeling existentially isolated (EI) causes a debilitating impact on one’s psychological well-being (PWB). Grounded in the regulatory model of nostalgia, I propose that nostalgia serves as a means to regulate the subjective experience of EI, fostering feelings of shared understanding and common existence. To test this, participants were induced to experience either existential isolation or existential connectedness and retrieve an unspecified memory. Participants then completed measures on nostalgia, affect, gratitude, psychological thriving and nostalgia proneness. The results indicated that the experimental manipulation was not successful in inducing EI and did not predict nostalgia. Although there was no statistical suppression of the effect of EI on PWB, nostalgia significantly predicted PWB. These findings highlight the difficulty in manipulating feelings of EI and underscore the dire need for further investigating ways to foster shared understanding among diverse individuals, in order to mitigate EI. It also replicated the positive association between nostalgia and PWB, thereby reinforcing the highly restorative nature of nostalgia.
title: Stop faking good! Wie Männer von Psychotherapie profitieren
Creators: name: Raadts-Misegaes, Stefan
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: Krankheitsverleugnung
subject: Männlichkeit
subject: Negativismus
subject: Persönlichkeit
subject: Selbstkritik
subject: ddc:300

description: Diese Studie beschreibt faking good als dysfunktionales Verleugnungsverhalten von Männern anhand der Vorhersage der Resultate stationärer Psychotherapie durch spezifische Persönlichkeitsfaktoren. Die Daten von 1636 Patientinnen und Patienten einer deutschen Klinik für Psychotherapie und Psychosomatische Medizin wurden in den Jahren 2011 und 2012 dazu untersucht. Vor Therapiebeginn füllten die PatientInnen den PSSI (Kuhl/Kazén 2009 und den SCL-90-R (Franke 2002) aus sowie nach Beendigung der Therapie erneut den SCL-90-R, um den Therapieerfolg zu messen. Korrelationen zwischen den PSSI-Skalen und der Anzahl signifikanter positiver und negativer Veränderungen der Skalen des SCL-90-R wurden berechnet (min. = 0, max. = 9). Für Patienten wurden die Ausprägungen der Skala zur negativistischen Persönlichkeit als Prädiktor für das Therapieergebnis erwartet. Mediationsanalysen bestätigten diese Annahme für beide Jahre mit der selbstkritischen Persönlichkeit als Mediator.
Booster Cards: A Practical Tool for Unlocking Business Model Innovation
Creators: name: Thomsen, Peter
name: Sort, Jesper C.
name: Kristiansen, Kristian Brøndum
Publisher: name: Journal of Business Models
Year: 2019

description: Business model innovation, whether it being BM design or reconfiguration, is a difficult task both to enact and to teach/apply. In this paper we describe the use of booster cards to enhance the process and how the booster cards help both students and practitioners better grasp the innovation process.
description: Journal of Business Models, Vol 7 No 3 (2019): Special Issue: Teaching Business Models - Part 1
QUALITY CONTROL AND EVALUATION OF THE LIFE CYCLE INSULATED POWER CABLES XLPE
Creators: name: Gontar Yu.
name: Kiessaiev, O.
name: Antonets, T.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: Medium voltage power cables
XLPE insulated cables
cable life cycle
cable system test methods
reliability.

description: The undoubted advantages of cables with XLPE insulation in comparison with cables with impregnated paper insulation are considered. Such cables are more reliable in operation. The need for design is based on technological and design features, on the number of defects, on the technology to be prepared and by the minds of the operation. Reliability is determined by technological and design features, the absence of defects, manufacturing technology and operating conditions. Tests are an integral part of cable life cycle. Life cycle assessment is an important tool for determining the actual service life. Analysis of the data obtained during the tests allows you to assess the life cycle of the cable.
TERNARY UNIVERSAL LOOPS SATISFYING QUADRATIC IDENTITIES OF THE LENGTH THREE
Creators: name: Tarasevych, A.
name: Sokhatsky, F.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: ternary quasigroup
quadratic equation
universal loop
Steiner quasigroup
identity
middle loop.

description: In this article, it is proved that each quadratic identity of the length three in the variety of universal loops (i.e., each of its element is neutral) is equivalent to exactly one of the five given identities. The first identity defines the class of all universal loops, the second one defines the variety of the boolean skeins and the other three identities define three parastrophic varieties whose operations are repetition-free compositions of binary commutative middle loops. The obtained varieties are solutions of A. Krapež’s functional equation F x x y y ( , , )  and that is why it is a partial solution of his problem.
Five strategic foresight tools to enhance business model innovation teaching
Creators: name: Spaniol, Matthew J.
name: Bidmon, Christina M.
name: Holm, Anna
name: Rohrbeck, René
Publisher: name: Journal of Business Models
Year: 2019

description: We discuss our lessons from 8 years of teaching business model innovation to executives in our part-time MBA program. We inspect how the usage of 5 strategic foresight tools has supported students to innovate business models and discuss the advantages and disadvantages of using student-owned live cases.
description: Journal of Business Models, Vol 7 No 3 (2019): Special Issue: Teaching Business Models - Part 1
Activate business model learning through flipped classroom and backward design
Creators: name: Bitetti, Leandro
Publisher: name: Journal of Business Models
Year: 2019

description: The paper presents a teaching experience in a master course about business models following a pedagogical approach, which combines flipped classroom and backward design to facilitate the development of students’ competencies. The results confirm this method is effective, though it requires a significant shift in both lecturers’ and students’ roles.
description: Journal of Business Models, Vol 7 No 3 (2019): Special Issue: Teaching Business Models - Part 1
The effect of Fe and Ru substitution for Ni on the thermopower in MgCNi_3
Creators: name: Sulkowski, C.
name: Klimczuk, T.
name: Cava, R. J.
name: Rogacki, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The intermetallic perovskite MgCNi3 is a superconductor with a Tc=7 K. Substitution of Fe and Ru for Ni decreases Tc monotonically as the doping concentration is increased. Here we report thermopower measurements, S(T), on MgCNi3, MgCNi3-xFex and MgCNi3-xRux. For MgCNi3, the thermopower is negative, - 12.5 mikroV/K, at 300 K. The absolute value of S decreases as x increases in MgCNi3-xFex and MgCNi3-xRux. The sign of S changes from negative to positive at low temperatures for values of x > 0.01. These data show that the carriers in MgCNi3 are electrons, and by increasing x and decreasing temperature, the participation of hole carriers clearly increases. The influence of the magnetic moments of the Fe atoms on the thermopower is not visible.
description: 14 pages, 4 figures
Strong Negative Electrothermal Feedback in Thermal Kinetic Inductance Detectors
Creators: name: Agrawal, Shubh
name: Steinbach, Bryan
name: Bock, James J.
name: Frez, Clifford
name: Minutolo, Lorenzo
name: Nguyen, Hien
name: O'Brient, Roger
name: Turner, Anthony
name: Wandui, Albert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate strong negative electrothermal feedback accelerating and linearizing the response of a thermal kinetic inductance detector (TKID). TKIDs are a proposed highly multiplexable replacement to transition-edge sensors and measure power through the temperature-dependent resonant frequency of a superconducting microresonator bolometer. At high readout probe power and probe frequency detuned from the TKID resonant frequency, we observe electrothermal feedback loop gain up to $\mathcal L$ $\approx$ 16 through measuring the reduction of settling time. We also show that the detector response has no detectable non-linearity over a 38% range of incident power and that the noise-equivalent power is below the design photon noise.
description: 8 pages, 9 figures, The following article has been submitted to the Journal of Applied Physics. After it is published, it will be found at https://publishing.aip.org/resources/librarians/products/journals/
Long-range model of vibrational autoionization in core-nonpenetrating Rydberg states of NO
Creators: name: Barnum, Timothy J.
name: Clausen, Gloria
name: Jiang, Jun
name: Coy, Stephen L.
name: Field, Robert W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In high orbital angular momentum ($\ell \geq 3$) Rydberg states, the centrifugal barrier hinders close approach of the Rydberg electron to the ion-core. As a result, these core-nonpenetrating Rydberg states can be well described by a simplified model in which the Rydberg electron is only weakly perturbed by the long-range electric properties (i.e., multipole moments and polarizabilities) of the ion-core. We have used a long-range model to describe the vibrational autoionization dynamics of high-$\ell$ Rydberg states of nitric oxide (NO). In particular, our model explains the extensive angular momentum exchange between the ion-core and Rydberg electron that had been previously observed in vibrational autoionization of $f$ ($\ell=3$) Rydberg states. These results shed light on a long-standing mechanistic question around these previous observations, and support a direct, vibrational mechanism of autoionization over an indirect, predissociation-mediated mechanism. In addition, our model correctly predicts newly measured total decay rates of $g$ ($\ell=4$) Rydberg states because, for $\ell\geq4$, the non-radiative decay is dominated by autoionization rather than predissociation. We examine the predicted NO$^+$ ion rotational state distributions generated by vibrational autoionization of $g$ states and discuss applications of our model to achieve quantum state selection in the production of molecular ions.
description: 12 pages, 7 figures
Insights from teaching sustainable business models using a MOOC and a Hackathons
Creators: name: Faber, Niels
name: Jonker, Jan
Publisher: name: Journal of Business Models
Year: 2019

description: We provide two teaching approaches, developed to teach sustainable business modeling to Bachelor and Master students. First, we present a MOOC on developing "new business models" focusing on practitioners in society. Second, we describe an approach in which students develop sustainable business models using a Hackathon as the teaching format.
description: Journal of Business Models, Vol 7 No 3 (2019): Special Issue: Teaching Business Models - Part 1
The stability of quantum Markov filters
Creators: name: van Handel, Ramon
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: When are quantum filters asymptotically independent of the initial state? We show that this is the case for absolutely continuous initial states when the quantum stochastic model satisfies an observability condition. When the initial system is finite dimensional, this condition can be verified explicitly in terms of a rank condition on the coefficients of the associated quantum stochastic differential equation.
description: Final version
Estimating Entropy of Liquids from Atom-Atom Radial Distribution Functions: Silica, Beryllium Fluoride and Water
Creators: name: Sharma, Ruchi
name: Agarwal, Manish
name: Chakravarty, Charusita
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Molecular dynamics simulations of water, liquid beryllium fluoride and silica melt are used to study the accuracy with which the entropy of ionic and molecular liquids can be estimated from atom-atom radial distribution function data. All three systems are known to display similar liquid-state thermodynamic and kinetic anomalies due to a region of anomalous excess entropy behaviour where entropy rises on isothermal compression. The pair correlation entropy is demonstrated to be sufficiently accurate that the density-temperature regime of anomalous behaviour as well as the strength of the entropy anomaly can be predicted reliably for both ionic melts as well as different rigid-body pair potentials for water. Errors in the total thermodynamic entropy for ionic melts due to the pair correlation approximation are of the order of 10% or less for most state points but can be significantly larger in the anomalous regime at very low temperatures. In the case of water, as expected given the rigid-body constraints for a molecular liquids, the pair correlation approximation causes significantly larger errors, between 20 and 30%, for most state points. Comparison of the excess entropy, Se, of ionic melts with the pair correlation entropy, S2, shows that the temperature dependence of Se is well described by T ??2=5 scaling across both the normal and anomalous regimes, unlike in the case of S2. As a function of density, the Se(rho) curves shows only a single maximum while the S2(rho) curves show both a maximum and a minimum. These differences in the behaviour of S2 and Se are due to the fact that the residual multiparticle entropy, delta(S) = Se - S2, shows a strong negative correlation with tetrahedral order in the anomalous regime.
description: 30 pages, 8 figures
GZK Photons Above 10 EeV
Creators: name: Gelmini, Graciela B
name: Kalashev, Oleg
name: Semikoz, Dmitry V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the flux of "GZK-photons", namely the flux of photons produced by extragalactic nucleons through the resonant photoproduction of pions, the so called GZK effect. This flux depends on the UHECR spectrum on Earth, of the spectrum of nucleons emitted at the sources, which we characterize by its slope and maximum energy, on the distribution of sources and on the intervening cosmological backgrounds, in particular the magnetic field and radio backgrounds. For the first time we calculate the GZK photons produced by nuclei. We calculate the possible range of the GZK photon fraction of the total UHECR flux for the AGASA and the HiRes spectra. We find that for nucleons produced at the sources it could be as large as a few % and as low as 10^{-4} above 10 EeV. For nuclei produced at the sources the maximum photon fraction is a factor of 2 to 3 times smaller above 10 EeV but the minimum could be much smaller than for nucleons. We also comment on cosmogenic neutrino fluxes.
description: 20 pages, 9 figures (21 panels), iopart.cls and iopart12.clo needed to typeset
A classification of prime-valent regular Cayley maps on some groups
Creators: name: Kim, Dongseok
name: Kwon, Young Soo
name: Lee, Jaeun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C10, 05C30

description: A Cayley map is a 2-cell embedding of a Cayley graph into an orientable surface with the same local orientation induced by a cyclic permutation of generators at each vertex. In this paper, we provide classifications of prime-valent regular Cayley maps on abelian groups, dihedral groups and dicyclic groups. Consequently, we show that all prime-valent regular Cayley maps on dihedral groups are balanced and all prime-valent regular Cayley maps on abelian groups are either balanced or anti-balanced. Furthermore, we prove that there is no prime-valent regular Cayley map on any dicyclic group.
Dynamical estimates of chaotic systems from Poincaré recurrences
Creators: name: Baptista, Murilo S.
name: Maranhao, Dariel M.
name: Sartorelli, Jose C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We show that the probability distribution function that best fits the distribution of return times between two consecutive visits of a chaotic trajectory to finite size regions in phase space deviates from the exponential statistics by a small power-law term, a term that represents the deterministic manifestation of the dynamics, which can be easily experimentally detected and theoretically estimated. We also provide simpler and faster ways to calculate the positive Lyapunov exponents and the short-term correlation function by either realizing observations of higher probable returns or by calculating the eigenvalues of only one very especial unstable periodic orbit of low-period. Finally, we discuss how our approaches can be used to treat data coming from complex systems.
description: subm. for publication. Accepted fpr publication in Chaos
Deep learning for music generation. Four approaches and their comparative evaluation
Creators: name: Paroiu, Razvan
name: Trausan-Matu, Stefan
Publisher: name: arXiv
Year: 2025
Subjects: subject: Sound (cs.SD)
subject: Artificial Intelligence (cs.AI)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper introduces four different artificial intelligence algorithms for music generation and aims to compare these methods not only based on the aesthetic quality of the generated music but also on their suitability for specific applications. The first set of melodies is produced by a slightly modified visual transformer neural network that is used as a language model. The second set of melodies is generated by combining chat sonification with a classic transformer neural network (the same method of music generation is presented in a previous research), the third set of melodies is generated by combining the Schillinger rhythm theory together with a classic transformer neural network, and the fourth set of melodies is generated using GPT3 transformer provided by OpenAI. A comparative analysis is performed on the melodies generated by these approaches and the results indicate that significant differences can be observed between them and regarding the aesthetic value of them, GPT3 produced the most pleasing melodies, and the newly introduced Schillinger method proved to generate better sounding music than previous sonification methods.
Azimuthally-sensitive femtoscopy from RHIC to LHC in hydrodynamics with statistical hadronization
Creators: name: Kisiel, Adam
name: Broniowski, Wojciech
name: Chojnacki, Mikolaj
name: Florkowski, Wojciech
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Azimuthally-sensitive femtoscopy for heavy-ion collisions at RHIC and LHC is explored within the approach consisting of the hydrodynamics of perfect fluid followed by statistical hadronization. It is found that for the RHIC initial conditions the very same framework that reproduces the standard soft observables (including the transverse-momentum spectra, the elliptic flow, and the azimuthally-averaged HBT radii) leads to a proper description of the azimuthally-sensitive femtoscopic observables - we find that the azimuthal variation of the side and out HBT radii is very well reproduced for all centralities, while the out-side correlation is somewhat too large for non-central events. Concerning the dependence of the femtoscopic parameters on kT we find that it is very well reproduced for the out and side radii, and fairly well for the long radius. The model is then extrapolated for the LHC energy. We predict the overall moderate growth of the HBT radii and the decrease of their azimuthal oscillations. Such effects are naturally caused by longer evolution times. In addition, we discuss in detail the space-time patterns of particle emission. We show that they are quite complex and argue that the overall shape seen by the femtoscopic methods cannot be easily disentangled on the basis of simple-minded arguments.
description: (12 pages, 10 figures), submitted to PRC, updated the initial temperatures to the ones at tau_0=0.25 fm
Adversarial Random Forest Classifier for Automated Game Design
Creators: name: Maurer, Thomas
name: Guzdial, Matthew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Autonomous game design, generating games algorithmically, has been a longtime goal within the technical games research field. However, existing autonomous game design systems have relied in large part on human-authoring for game design knowledge, such as fitness functions in search-based methods. In this paper, we describe an experiment to attempt to learn a human-like fitness function for autonomous game design in an adversarial manner. While our experimental work did not meet our expectations, we present an analysis of our system and results that we hope will be informative to future autonomous game design research.
description: 6 pages, 3 figures, Reflections Track of the 2021 ACM Foundations of Digital Games Conference
The Swift Decline of the British Pound: Evidence from UK Trade-invoicing after the Brexit Vote
Creators: name: Crowley, M. A.
name: Han, L.
name: Son, M.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2024
Subjects: Invoicing Currency
Trade Transactions
Sterling
Brexit

description: Using administrative transactions data from the United Kingdom, we document a swift decline in sterling use among British exporters after the 2016 Brexit vote. Through a novel decomposition, we document most of this decline comes from two sources: (i) continuously-operating firms switching from sterling to dollars or local currencies and (ii) reductions in trade volumes and transactions for sterling-loyal firms. We quantify the role of firm and market heterogeneity in driving these changes and document that firms which served markets with more US competitors and used more dollar-invoiced imported inputs were more likely to switch to dollars after the Brexit vote. Altogether, our findings provide the first quantitative evidence on the channels that contribute to changes in aggregate invoicing shares amidst political upheaval.
Temporal Parity-Time Symmetry for Extreme Energy Transformations
Creators: name: Li, Huanan
name: Yin, Shixiong
name: Galiffi, Emanuele
name: Alù, Andrea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Temporal interfaces introduced by abrupt switching of the constitutive parameters of unbounded media enable unusual wave phenomena. So far, their explorations have been mostly limited to lossless media. Yet, non-Hermitian phenomena leveraging material loss and gain, and their balanced combination in parity-time (PT)-symmetric systems, have been opening new vistas in photonics. Here, we unveil the role that temporal interfaces offer in non-Hermitian physics, introducing the dual of PT symmetry for temporal boundaries. Our findings reveal unexplored interference mechanisms enabling extreme energy manipulation, and open new scenarios for time-switched metamaterials, connecting them with the broad opportunities offered by non-Hermitian phenomena.
Jet-induced gauge field instabilities in the quark-gluon plasma
Creators: name: Mannarelli, Massimo
name: Manuel, Cristina
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the properties of the collective modes of a system composed by a thermalized quark-gluon plasma traversed by a relativistic jet of partons. The transport equations obeyed by the components of the plasma and of the jet are studied in the Vlasov approximation. Assuming that the partons in the jet can be described with a tsunami-like distribution function we derive the expressions of the dispersion law of the collective modes. Then the behavior of the unstable gauge modes of the system is analyzed for various values of the velocity of the jet, of the momentum of the collective modes and of the angle between these two quantities. We find that the most unstable modes are those with momentum orthogonal to the velocity of the jet, and the effect is stronger for ultrarelativistic jet velocities. Our results suggest a new possible collective mechanism for the description of the jet quenching phenomena in heavy ion collisions.
description: 7 pages; invited talk at the YITP symposium on "Fundamental Problems in Hot and/or dense QCD", Kyoto, Japan, 3-6 March 2008
title: The values of being in design: Towards a feminist design ontology
Creators: name: Levick-Parkin, Melanie
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: critiques of patriarchal capitalism
subject: embodied values in design
subject: feminist design ontology
subject: Kapitalismus
subject: Patriarchat
subject: ddc:502

description: This article critiques the way in which contemporary western design ontology is constructed, why this affects conceptions of female creative practice and how this impacts on women’s lives. Starting with a personal account of educating female designers, the article aims to unpack the different ways in which ontologically invisible patriarchal and capitalist value systems act on us as designers, aided by processes of embodiment which are essential to design practice. It calls for the “dedesigning” of our ontology as designers through feminist epistemologies and practices which keep questions about transformations, futured by design, in a state of critical plasticity by attending to sociopolitical, socio-economical and ecological ethics whilst keeping issues of gender exclusion at its core.
3-Party Covenant Financing of ‘Semi-Regulated’ Pumped Hydro Assets
Creators: name: Simshauser, P.
name: Gohde, N.
Publisher: name: Faculty of Economics, University of Cambridge
Year: 2024
Subjects: Pumped Hydro
Energy Storage
Energy-Only Markets

description: All credible scenarios of a decarbonising Australian power system with high levels of renewables rely on a portfolio of flexible, dispatchable storage and firming assets. Given our current understanding of costs and prices, such portfolios are thought to include short-duration batteries, intermediate-duration pumped hydro, with gas turbines providing the last line of defence. The stochastic intermittency of wind, the synchronicity of rooftop and utility-scale solar PV, and stubbornly inelastic aggregate final demand – at least over the medium term – only serve to underscore this point. Wind and solar output need to be moved through space (networks) and time (storage). The storage asset class with by far the highest energy density, pumped hydro, appears to be facing structurally high capital costs with most recent estimates given via high profile projects under development (viz. Snowy 2.0, Borumba) being ~$5000-$6000/kW in real terms. Yet under-development of pumped hydro will result in sharply rising renewable curtailment rates and a greater reliance on gas turbines – with the latter likely to be intractable. In this article, we focus on material reductions in the carrying cost of capital-intensive, ultra-long-lived pumped hydro assets through a 3-Party Covenant (3PC) financing structure between governments, the consumer base and plant investors. Our modelling suggests this reduces the annual capital costs and imputed cost of storage during operations by more than 35%. Our 3PC model is orchestrated through a semi-regulated business model and issuance of 10-year Commonwealth Government Bonds with a zero ‘credit spread’ – all of which are critical to minimise costs to consumers.
The Approach to the Thermodynamic Limit in Lattice QCD at μ\neq0
Creators: name: Splittorff, K.
name: Verbaarschot, J. J. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The expectation value of the complex phase factor of the fermion determinant is computed to leading order in the $p$-expansion of the chiral Lagrangian. The computation is valid for $μ
description: 9 pages, 5 figures
Should We Augment Large Covariance Matrix Estimation with Auxiliary Network Information?
Creators: name: Ge, S.
name: Li, S.
name: Linton, O. B.
name: Liu, W.
name: Su, W.
Publisher: name: Faculty of Economics, University of Cambridge
Year: 2024
Subjects: Big Data
Network
Large Covariance Matrix
Thresholding
Banding

description: In this paper, we propose two novel frameworks to incorporate auxiliary information about interconnections among entities (i.e., network information) into the estimation of large covariance matrices. The current literature either completely ignores this kind of network information (e.g., thresholding and shrinkage) or imposes some very restrictive network structure that limits the application (e.g., banding). In the era of big data, we have easy access to auxiliary network information about these interconnections. Depending on the features of the auxiliary network information at hand and the structure of the covariance matrix, we provide two different frameworks correspondingly —the Network Guided Thresholding and the Network Guided Banding. We show that both Network Guided estimators have optimal convergence rates over a larger class of sparse covariance matrices. Simulation studies indicate that these estimators generally outperform other purely statistical methods, particularly when the true covariance matrix is sparse and the auxiliary network provides reliable information. Empirically, we apply our methods to estimate the covariance matrix of asset returns using various forms of auxiliary network data to construct the global minimum variance (GMV) and Mean-Variance Optimal (MVO) portfolios.