cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
การใช้สื่อดิจิทัลเพื่อสื่อสารการตลาดของผู้ประกอบการโรงแรมและปัจจัยส่วนประสมทางการตลาด (7Ps) ที่มีอิทธิพลต่อการตัดสินใจใช้บริการโรงแรมกรณีศึกษาโรงเเรมนิวเเทรเวิลลอด์จ จังหวัดจันทบุรี
Creators: name: อังศุมาริน สุชัยรัตนโชค
Publisher: name: คณะนิเทศศาสตร์ มหาวิทยาลัยราชภัฏรำไพพรรณี
Year: 2565
Subjects: การใช้สื่อดิจิทัลเพื่อสื่อสารการตลาด
โรงเเรมนิวเเทรเวิลลอด์จ
ปัจจัยส่วนประสมทางการตลาด (7Ps)
อิทธิพลต่อการตัดสินใจใช้บริการ
จังหวัดจันทบุรี

description: วารสารนวัตกรรมสังคมและเทคโนโลยีสื่อสารมวลชน, 5, 2, 78-86
Spin Hall effect emerging from a chiral magnetic lattice without spin-orbit coupling
Creators: name: Zhang, Yang
name: Zelezny, Jakub
name: Sun, Yan
name: Brink, Jeroen van den
name: Yan, Binghai
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spin Hall effect (SHE), which converts a charge current into a transverse spin current, has long been believed to be a phenomenon induced by the spin--orbit coupling. Here, we propose an alternative mechanism to realize the intrinsic SHE through a chiral magnetic structure that breaks the spin rotation symmetry. No spin--orbit coupling is needed even when the scalar spin chirality vanishes, different from the case of the topological Hall effect. In known chiral antiferromagnetic compounds Mn$_3X$ ($X=$ Ga, Ge, and Sn), for example, we indeed obtain large spin Hall conductivities based on \textit{ab initio} calculations. Apart further developing the conceptual understanding of the SHE, our work suggests an alternative strategy to design spin Hall materials without involving heavy elements, which may be advantageous for technological applications.
description: 13 pages, 4 figures
Gravitational Instabilities of the Cosmic Neutrino Background with Non-zero Lepton Number
Creators: name: Barrie, Neil D.
name: Kobakhidze, Archil
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We argue that a cosmic neutrino background that carries non-zero lepton charge develops gravitational instabilities. Fundamentally, these instabilities are related to the mixed gravity-lepton number anomaly. We have explicitly computed the gravitational Chern-Simons term which is generated quantum-mechanically in the effective action in the presence of a lepton number asymmetric neutrino background. The induced Chern-Simons term has a twofold effect: (i) gravitational waves propagating in such a neutrino background exhibit birefringent behaviour leading to an enhancement/suppression of the gravitational wave amplitudes depending on the polarisation, where the magnitude of this effect is related to the size of the lepton asymmetry; (ii) Negative energy graviton modes are induced in the high frequency regime, which leads to very fast vacuum decay producing, e.g., positive energy photons and negative energy gravitons. From the constraint on the present radiation energy density, we obtain an interesting bound on the lepton asymmetry of the universe.
description: 12 pages, 1 figure, updated to match PLB
Quantum phase transitions driven by rhombic-type single-ion anisotropy in the S=1 Haldane chain
Creators: name: Tzeng, Yu-Chin
name: Onishi, Hiroaki
name: Okubo, Tsuyoshi
name: Kao, Ying-Jer
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The spin-1 Haldane chain is an example of the symmetry-protected-topological (SPT) phase in one dimension. Experimental realization of the spin chain materials usually involves both the uniaxial-type, $D(S^z)^2$, and the rhombic-type, $E[(S^x)^2-(S^y)^2]$, single-ion anisotropies. Here, we provide a precise ground-state phase diagram for spin-1 Haldane chain with these single-ion anisotropies. Using quantum numbers, we find that the $\mathbb{Z}_2$ symmetry breaking phase can be characterized by double degeneracy in the entanglement spectrum. Topological quantum phase transitions take place on particular paths in the phase diagram, from the Haldane phase to the Large-$E_x$, Large-$E_y$, or Large-$D$ phases. The topological critical points are determined by the level spectroscopy method with a newly developed parity technique in the density matrix renormalization group [Phys. Rev. B 86, 024403 (2012)], and the Haldane-Large-$D$ critical point is obtained with an unprecedentedly precision, $(D/J)_c=0.9684713(1)$. Close to this critical point, a small rhombic single-ion anisotropy $|E|/J\ll1$ can destroy the Haldane phase and bring the system into a $y$-Néel phase. We propose that the compound [Ni(HF$_2$)(3-Clpy)$_4$]BF$_4$ is a candidate system to search for the $y$-Néel phase.
description: Supplemental Material is included
Photon scattering by an atomic ensemble coupled to a one-dimensional nanophotonic waveguide
Creators: name: Song, Guo-Zhu
name: Munro, Ewan
name: Nie, Wei
name: Deng, Fu-Guo
name: Yang, Guo-Jian
name: Kwek, Leong-Chuan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the quantum scattering of a single-photon pulse interacting with an ensemble of $Λ$-type three-level atoms coupled to a one-dimensional waveguide. With an effective non-Hermitian Hamiltonian, we study the collective interaction between the atoms mediated by the waveguide mode. In our scheme, the atoms are randomly placed in the lattice along the axis of the one-dimensional waveguide, which closely corresponds to the practical condition that the atomic positions can not be controlled precisely in experiment. Many interesting optical properties occur in our waveguide-atom system, such as electromagnetically induced transparency (EIT) and optical depth. Moreover, we observe that strong photon-photon correlation with quantum beats can be generated in the off-resonant case, which provides an effective candidate for producing non-classical light in experiment. With remarkable progress in waveguide-emitter system, our scheme may be feasible in the near future.
description: 10 pages,7 figures
Study of a background reconstruction method for the measurement of D-meson azimuthal angular correlations
Creators: name: Ma, Long
name: Dong, Xin
name: Huang, Huan-Zhong
name: Ma, Yu-Gang
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study experimental background reconstruction methods for the measurement of $D-\overline{D}$ correlation using a PYTHIA simulation. Like-sign and side-band background methods that are widely used in the experimental measurements of single $D$-meson production yields were deployed for the correlation background study. It is found that the like-sign method which well describes the combinatorial background of single $D^{0}$ meson yields fails to reproduce the correlated background in the $D^{0}-\overline{D^{0}}$ correlation measurement, while the side-band background method yields a good description of the background for both the single $D^0$ yields and of the correlated background of the $D^{0}-\overline{D^{0}}$ correlation measurement.
description: 13 pages, 7 figures
Energy Flux and Particle Flux in Steady-State Solutions of Nuclear Star Clusters
Creators: name: Rom, Barak
name: Linial, Itai
name: Sari, Re'em
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We examine the effects of two-body interactions in a nuclear star cluster surrounding a supermassive black hole. We evaluate the energy flux, analogously to the particle flux calculation of Bahcall and Wolf (1976). We show that there are two types of power-law steady-state solutions: one with zero energy flux and constant particle flux and the other with constant energy flux and zero particle flux. We therefore prove that a zero particle flux solution, which corresponds to the case of an accreting supermassive black hole, can be obtained by requiring a constant energy flux. Consequently, this solution can be derived by simple dimensional analysis, bypassing the need for detailed calculation. Finally, we show that this characteristic, of zero particle flux for constant energy flux and vice versa, is not unique to the Keplerian potential of a supermassive black hole but holds for any central potential of the form $ϕ\propto r^{-β}$.
description: 6 pages, Accepted for publication in ApJ
ESTRATEGIAS EDUCATIVAS PARA LA PREVENCIÓN DE EMBARAZOS EN ADOLESCENTES
Creators: name: Silva Arteaga, Melany Elizabeth
Publisher: name: Zenodo-HGOIA
Year: 2024

description: El embarazo en adolescentes en un problema mundial que causa repercusiones tanto en la salud, como en la economía y en la sociedad. A nivel mundial cada año alrededor de 21 millones de adolescentes entre 15 y 19 años quedan embarazadas; en Ecuador más de 41.000 niñas y adolescentes entre 10 y 19 años se convierten en madres cada año (INEC).

Implementar estrategias educativas efectivas e intervenciones que incluyan acceso a métodos anticonceptivos, es imprescindible para contribuir en la reducción de embarazos en adolescentes.
The Way to Quench: Galaxy evolution in Abell 2142
Creators: name: Qu, Cheng-Gong
name: Yu, Heng
name: Diaferio, Antonaldo
name: Sohn, Jubee
name: Liu, DengQi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We show how the star formation activity of galaxies is progressively inhibited from the outer region to the center of the massive cluster A2142. From an extended spectroscopic redshift survey of 2239 galaxies covering a circular area of radius $\sim 11$~Mpc from the cluster center, we extract a sample of 333 galaxies with known stellar mass, star formation rate, and spectral index $D_n4000$. We use the Blooming Tree algorithm to identify the substructures of the cluster and separate the galaxy sample into substructure galaxies, halo galaxies and outskirt galaxies. The substructure and halo galaxies are cluster members, whereas the outskirt galaxies are only weakly gravitationally bound to the cluster. For the cluster members, the star formation rate per stellar mass decreases with decreasing distance $R$ from the cluster center. Similarly, the spectral index $D_n4000$ increases with $R$, indicating an increasingly average age of the stellar population in galaxies closer to the cluster center. In addition, star formation in substructure galaxies is generally more active than in halo galaxies and less active than in outskirt galaxies, proving that substructures tend to slow down the transition between field galaxies and cluster galaxies. We finally show that most actively star forming galaxies are within the cluster infall region, whereas most galaxies in the central region are quiescent.
description: 11 pages, 12 figures, replaced to match the version accepted by RAA
eduroam in Africa
Creators: name: Fiore, Silvia
name: Dekkar, Leila
name: Aseda, Kennedy
Publisher: name: IST-Africa Institute and IIMC
Year: 2023
Subjects: AfricaConnect
AfricaConnect2
AfricaConnect3
Internet Connectivity
Research and Education Community
NRENs
eduroam
digital divide
inclusion
ICT4D
eduGAIN
roaming
students
authentication
federation
e-learning
COVID- 19

description: eduroam is the secure, worldwide roaming access service developed for the international research and education community to address the increasing need for fast and secure Internet connection everywhere. With over 6.4 billion international authentications to date stretching across 106 countries, eduroam is expanding in Africa, where National Research and Education Networks (NRENs) are going beyond the traditional campus connectivity aiming at bridging the digital divide. Uganda, South Africa and Kenya are leading the way and connecting users off campus at bus stops, libraries, cafes, and hospitals. NRENs are at the helm of Africa’s digital transformation and eduroam is a tangible solution to bridging the digital divide. This paper is, therefore, a guidebook detailing the technology behind eduroam, the benefits and the challenges for its four main target groups in Africa: users, institutions, NRENs and municipalities. The call for action is to further deploy eduroam hotspots and provide connectivity everywhere on the continent, including remote areas and unprivileged communities where students, researchers and teachers are present.
Improved Sorghum Variety A Forgotten Gold in the Kenya Drylands
Creators: name: Chimoita, Evans
Publisher: name: University of Nairobi
Year: 2020
Subjects: Agriculture
Drylands

description: Agricultural extension and technology transfer services play a vital role in disseminating research knowledge, skills and income-generating strategies among the farming communities in Kenya. However, there exists a disconnect between the amount of information and technologies developed in research centres and what is implemented by farmers. Further, improved technologies are not reaching farmers for utilization as a result of weak linkages between the government's extension providers, who are charged with the responsibility of ensuring that the technologies transfer to the farmers for utilization. Moreover, the effectiveness of the Government of Kenya's extension sector service provision has greatly declined during the last decade due to structural adjustment programmes (SAPs) and liberalization policies. The sector further faces constraints such as reduced and aged extension staff and low funding for operations and maintenance services, leading to weak information dissemination networks.
Key Fire Disaster Prevention Factors in Informal Settlements in Nairobi
Creators: name: Maina, Samuel
name: Ngau, Peter
Publisher: name: University of Nairobi
Year: 2020
Subjects: Informal Settlements

description: The study aimed to examine the dynamics of fire disaster, vulnerability and response in the informal settlements in Nairobi using a case study of Mukuru Fuata Nyayo, a constellation of informal settlements lying in the southern side of the city. In Kenya, there is no systematic record by government and city authorities on fires in informal settlements. There are often sporadic and conflicting reports on fire occurrence by diverse organizations and agencies, including the Kenya Red Cross Society (KRCS), the United Nations Office of the Coordination of Humanitarian Affairs (UN-OCHA) and the Kenya National Disaster Operations Centre (NDOC). For example, for the period between January and March 2011, KRCS reported that approximately 42 fire incidences occurred resulting in at least 11 fatalities and about 472 casualties in Nairobi’s informal settlements (KRCS, 2015). For the same period, UN-OCHA reported that 71 fires occurred in Nairobi resulting in loss of 2,016 jobs, 376 houses, 2 deaths, 11 casualties and asset loss above US$ 1 million (UN-OCHA, 2011).
NFTVis: Visual Analysis of NFT Performance
Creators: name: Yan, Fan
name: Wang, Xumeng
name: Mao, Ketian
name: Zhang, Wei
name: Chen, Wei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: A non-fungible token (NFT) is a data unit stored on the blockchain. Nowadays, more and more investors and collectors (NFT traders), who participate in transactions of NFTs, have an urgent need to assess the performance of NFTs. However, there are two challenges for NFT traders when analyzing the performance of NFT. First, the current rarity models have flaws and are sometimes not convincing. In addition, NFT performance is dependent on multiple factors, such as images (high-dimensional data), history transactions (network), and market evolution (time series). It is difficult to take comprehensive consideration and analyze NFT performance efficiently. To address these challenges, we propose NFTVis, a visual analysis system that facilitates assessing individual NFT performance. A new NFT rarity model is proposed to quantify NFTs with images. Four well-coordinated views are designed to represent the various factors affecting the performance of the NFT. Finally, we evaluate the usefulness and effectiveness of our system using two case studies and user studies.
description: This manuscript is accepted for publication in Proceedings of the 16th IEEE Pacific Visualization Symposium (PacificVis '23)
Vorschau / Impressum
Creators: name: Redaktion, Die
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Thermal expansion of atmosphere and stability of vertically stratified fluids
Creators: name: Kaladze, T. D.
name: Misra, A. P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The influence of the thermal expansion of the Earth's atmosphere on the stability of vertical stratification of fluid density and temperature is studied. We show that such an influence leads to the instability of incompressible flows. Modified by the thermal expansion coefficient, a new expression for the Brunt-V{ä}is{ä}l{ä} frequency is derived, and a critical value of the thermal expansion coefficient for which the instability occurs is revealed.
description: 6 pages, 3 figures; Revised version to appear in Physics Letters A (2023)
Single-electron thermal devices coupled to a mesoscopic gate
Creators: name: Sánchez, Rafael
name: Thierschmann, Holger
name: Molenkamp, Laurens W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically investigate the propagation of heat currents in a three-terminal quantum dot engine. Electron-electron interactions introduce state-dependent processes which can be resolved by energy-dependent tunneling rates. We identify the relevant transitions which define the operation of the system as a thermal transistor or a thermal diode. In the former case, thermal-induced charge fluctuations in the gate dot modify the thermal currents in the conductor with suppressed heat injection, resulting in huge amplification factors and the possible gating with arbitrarily low energy cost. In the latter case, enhanced correlations of the state-selective tunneling transitions redistribute heat flows giving high rectification coefficients and the unexpected cooling of one conductor terminal by heating the other one. We propose quantum dot arrays as a possible way to achieve the extreme tunneling asymmetries required for the different operations.
description: 18 pages (single column), 9 figures. Similar to accepted version
Patients with Chronic Kidney Disease: How Can They Make Informed Nutritional Decisions?
Creators: name: Opiyo, Rose
name: Were, Anthony
name: Nabakwe, Esther
name: Mbogo, Alexander
name: Olenja, Joyce
Publisher: name: University of Nairobi
Year: 2020
Subjects: Nutrion
MEDICINE::Dermatology and venerology,clinical genetics, internal medicine::Internal medicine::Kidney diseases

description: This policy brief is based on data from a cross-sectional mixed-method study that employed both qualitative and quantitative data collection approaches among adult patients with CKD undergoing haemodialysis and their family caregivers. The study was conducted at renal clinics and wards in Kenyatta National Hospital and Moi Teaching and Referral Hospital in Kenya. The research findings were triangulated with key stakeholder groups. To our knowledge, this was the first study in Kenya on adherence to diet prescriptions among adult patients with CKD on hemodialysis.
Automated 3D Pre-Training for Molecular Property Prediction
Creators: name: Wang, Xu
name: Zhao, Huan
name: Tu, Weiwei
name: Yao, Quanming
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Molecular property prediction is an important problem in drug discovery and materials science. As geometric structures have been demonstrated necessary for molecular property prediction, 3D information has been combined with various graph learning methods to boost prediction performance. However, obtaining the geometric structure of molecules is not feasible in many real-world applications due to the high computational cost. In this work, we propose a novel 3D pre-training framework (dubbed 3D PGT), which pre-trains a model on 3D molecular graphs, and then fine-tunes it on molecular graphs without 3D structures. Based on fact that bond length, bond angle, and dihedral angle are three basic geometric descriptors corresponding to a complete molecular 3D conformer, we first develop a multi-task generative pre-train framework based on these three attributes. Next, to automatically fuse these three generative tasks, we design a surrogate metric using the \textit{total energy} to search for weight distribution of the three pretext task since total energy corresponding to the quality of 3D conformer.Extensive experiments on 2D molecular graphs are conducted to demonstrate the accuracy, efficiency and generalization ability of the proposed 3D PGT compared to various pre-training baselines.
Difference modules and difference cohomology
Creators: name: Chalupnik, Marcin
name: Kowalski, Piotr
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 12H10, 14L15, 20G05

description: We give some basics about homological algebra of difference representations. We consider both the difference-discrete and the difference-rational case. We define the corresponding cohomology theories and show the existence of spectral sequences relating these cohomology theories with the standard ones.
antike Sudan in der zeitgenössischen Kunst
Creators: name: Fitzenreiter, Martin
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Powerful extreme phenotype sampling designs and score tests for genetic association studies
Creators: name: Bjørnland, Thea
name: Bye, Anja
name: Ryeng, Einar
name: Wisløff, Ulrik
name: Langaas, Mette
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: We consider cross-sectional genetic association studies (common and rare variants) where non-genetic information is available, or feasible to obtain for $N$ individuals, but where it is infeasible to genotype all $N$ individuals. We consider continuously measurable Gaussian traits (phenotypes). Genotyping $n
title: Non-linear forcing of climate on denudation in the Alps over the last 75 ka
Creators: name:  Mariotti ,   Apolline
name:  Blard ,   Pierre-Henri
name:  Charreau ,   Julien
name:  Toucanne ,   Samuel
name:  Jorry ,   Stephan
name:  Molliex ,   Stéphane
name:  ASTER ,   Team
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2021

description: Reconstruction of denudation rates through time is an important task to quantify and understand the impact of climate on landscape evolution. Cosmogenic nuclides have been widely used as a tool to infer denudation rates at the watershed scale from both river sediments and past stratigraphic records. Here, we analyze the in-situ 10Be cosmogenic concentration over the last 75 ka in sediments cores that were collected offshore the Var River (Western Mediterranean Sea). We present 26 10Be paleo denudation rates ranging from 0.15 ± 0.01 and 1.26 ± 0.16 mm yr−1. At the exception of the LGM period, the 10Be paleo denudation rates are similar to these of today in the Var (0.24 ± 0.04 mm yr−1). However, during the LGM, paleo denudation rates were 2 to 3 times higher than today, suggesting that glaciers may have played a role. To investigate this sharp increase in denudation rates, we use a mass balance approach to differentiate the glacial from the fluvial component of denudation rates. The resulting average glacial erosion rate during the LGM is 1.5 (+0.9 / -1.0) mm yr−1, roughly four times above the value of 0.4 (+0.4 / -0.5) mm yr−1 obtained during MIS 3-4 (29 - 71 ka) Our data suggest that climatic variations may only strongly affect denudation beyond a certain threshold, probably controlled by glacier dynamics, the duration of glacial advances, and temperature-driven processes such as frost cracking. Our study indicates that the denudation response to Quaternary glaciations is complex and nonlinear in glaciated areas.
MOV-Modified-FxLMS algorithm with Variable Penalty Factor in a Practical Power Output Constrained Active Control System
Creators: name: Lai, Chung Kwan
name: Shi, Dongyuan
name: Lam, Bhan
name: Gan, Woon-Seng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Practical Active Noise Control (ANC) systems typically require a restriction in their maximum output power, to prevent overdriving the loudspeaker and causing system instability. Recently, the minimum output variance filtered-reference least mean square (MOV-FxLMS) algorithm was shown to have optimal control under output constraint with an analytically formulated penalty factor, but it needs offline knowledge of disturbance power and secondary path gain. The constant penalty factor in MOV-FxLMS is also susceptible to variations in disturbance power that could cause output power constraint violations. This paper presents a new variable penalty factor that utilizes the estimated disturbance in the established Modified-FxLMS (MFxLMS) algorithm, resulting in a computationally efficient MOV-MFxLMS algorithm that can adapt to changes in disturbance levels in real-time. Numerical simulation with real noise and plant response showed that the variable penalty factor always manages to meet its maximum power output constraint despite sudden changes in disturbance power, whereas the fixed penalty factor has suffered from a constraint mismatch.
description: Accepted article in IEEE Signal Processing Letters
Königsinsignie auf der Nastasen-Stele Z. 26
Creators: name: Zibelius-Chen, Karola
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Quantum metric-induced nonlinear transport in a topological antiferromagnet
Creators: name: Wang, Naizhou
name: Kaplan, Daniel
name: Zhang, Zhaowei
name: Holder, Tobias
name: Cao, Ning
name: Wang, Aifeng
name: Zhou, Xiaoyuan
name: Zhou, Feifei
name: Jiang, Zhengzhi
name: Zhang, Chusheng
name: Ru, Shihao
name: Cai, Hongbing
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Yan, Binghai
name: Gao, Weibo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The Berry curvature and quantum metric are the imaginary part and real part, respectively, of the quantum geometric tensor which characterizes the topology of quantum states. The former is known to generate a zoo of important discoveries such as quantum Hall effect and anomalous Hall effect (AHE), while the consequences of the quantum metric have rarely been probed by transport. In this work, we observed quantum metric induced nonlinear transport, including both nonlinear AHE and diode-like nonreciprocal longitudinal response, in thin films of a topological antiferromagnet, MnBi$_2$Te$_4$. Our observation reveals that the transverse and longitudinal nonlinear conductivities reverse signs when reversing the antiferromagnetic order, diminish above the Néel temperature, and are insensitive to disorder scattering, thus verifying their origin in the band structure topology. They also flip signs between electron and hole-doped regions, in agreement with theoretical calculations. Our work provides a pathway to probe the quantum metric through nonlinear transport and to design magnetic nonlinear devices.
description: 23 pages, 6 figures for the manuscript; Supplementary information included
Convective heat transfer in the Burgers-Rayleigh-Bénard system
Creators: name: Calzavarini, Enrico
name: Hirata, Silvia C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The dynamics of heat transfer in a model system of Rayleigh-Bénard (RB) convection reduced to its essential, here dubbed Burgers-Rayleigh-Bénard (BRB), is studied. The system is spatially one-dimensional, the flow field is compressible and its evolution is described by the Burgers equation forced by an active temperature field. The BRB dynamics shares some remarkable similarities with realistic RB thermal convection in higher spatial dimensions: i) it has a supercritical pitchfork instability for the onset of convection which solely depends on the Rayleigh number $(Ra)$ and not on Prandlt $(Pr)$, occurring at the critical value $Ra_c = (2π)^4$ ii) the convective regime is spatially organized in distinct boundary-layers and bulk regions, iii) the asymptotic high $Ra$ limit displays the Nusselt and Reynolds numbers scaling regime $Nu = \sqrt{RaPr}/4$ for $Pr\ll 1$, $Nu=\sqrt{Ra}/(4\sqrtπ)$ for $Pr\gg1$ and $Re = \sqrt{Ra/Pr}/\sqrt{12}$, thus making BRB the simplest wall-bounded convective system exhibiting the so called ultimate regime of convection. These scaling laws, derived analytically through a matched asymptotic analysis are fully supported by the results of the accompanying numerical simulations. A major difference with realistic natural convection is the absence of turbulence. The BRB dynamics is stationary at any $Ra$ number above the onset of convection. This feature results from a nonlinear saturation mechanism whose existence is grasped by means of a two-mode truncated equation system and via a stability analysis of the convective regime.
description: 17 pages, 9 figures
title: Turzismen im Griechischen
Creators: name: Sagir-Yildirim, Sevim
Year: 2023

description: Die vorliegende Masterarbeit setzt sich mit den Turzismen in der griechischen Sprache auseinander. Ziel ist eine Auflistung türkischer Lehnwörter anhand von griechischen Volksliedern. Es wird versucht die Morphologie dieser entlehnten Wörter näher darzustellen. Ein besonderes Augenmerk wird auf die Phonologie des Türkischen und Griechischen gelegt. Ein wichtiges Kapitel der vorliegenden Arbeit widmet sich den phonetischen Veränderungen der türkischen Lehnwörter in der Griechischen Sprache. Bis dato wurden die Turzismen nicht detailreich untersucht, obwohl diese im Griechischen nicht wenig vorhanden sind. In zahlreichen griechischen Liedern kommen türkische Lehnwörter vor, welche teils noch immer im täglichen Sprachgebrauch sind. Im Anhang werden die Liedtexte auf Griechisch mit deutscher Übersetzung gegeben, wobei die Lehnwörter hervorgehoben werden.
Ausgrabungen in Hamadab bei Meroe - Zweite Kampagne, Frühjahr 2002
Creators: name: Wolf, Pawel
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Quantisation of Paths in Space-Time and Non-Perturbative Quantum Gravity
Creators: name: Moffat, James
name: Wang, Charles H. -T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In previous work we discussed the quantization of paths in spacetime. Building on these ideas we have developed a mathematically coherent theory addressing a number of open questions concerning Loop Quantum Gravity. Our approach develops a discrete spacetime and shows that macroscopic spacetime is a renormalization limiting form. Weaving together a number of our previous results we then prove that quantum states invariant under either an external group of local diffeomorphisms of spacetime or by contrast quantum states invariant under the internal action of a compact Lie group are common in a well-defined sense. These form the building blocks of invariant fields and Lagrangians. A form of supersymmetry and noncommutative spacetime naturally emerges, which predicts a massless graviton and its companion gravitino.
description: 26 pages
Physical dealloying for two-phase heat transfer applications: pool boiling case
Creators: name: Nikulin, Artem
name: Grosu, Yaroslav
name: Dauvergne, Jean-Luc
name: Ortuondo, Asier
name: del Barrio, Elena Palomo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this work, physical dealloying was explored as a simple and green method to microstructure the surface of commercial brass for pool boiling heat transfer coefficient enhancement. Three samples were dealloyed for 0.5, 1 and 3 hours at 650 C, turning the smooth surface into a porous one with a depth of 175, 200 and 223 um. The boiling experiments carried out in ethanol at 78 C have shown, that the maximum enhancement of heat transfer coefficient between 110 and 150% was achieved for the sample dealloyed for 0.5 h. Longer intervals of dealloying reduce boiling performance, but it is still much higher compared to smooth brass. This simple method can be customized for various thermal management equipment, such as conventional, plate and micro heat exchangers, all types of heat pipes, HVAC equipment etc., where the heat transfer occurs with phase change.
description: 19 pages, 10 figures
Ausgrabungen in Hamadab bei Meroe - Erste Kampagne, Frühjahr 2001
Creators: name: Wolf, Pawel
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Schrein aus frühkuschitischer Zeit in Kawa
Creators: name: Welsby, Derek A.
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Configuration Memory in Patchwork Dynamics for Low-dimensional Spin Glasses
Creators: name: Yang, Jie
name: Middleton, A. Alan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A patchwork method is used to study the dynamics of loss and recovery of an initial configuration in spin glass models in dimensions d=1 and d=2. The patchwork heuristic is used to accelerate the dynamics to investigate how models might reproduce the remarkable memory effects seen in experiment. Starting from a ground state configuration computed for one choice of nearest neighbor spin couplings, the sample is aged up to a given scale under new random couplings, leading to the partial erasure of the original ground state. The couplings are then restored to the original choice and patchwork coarsening is again applied, in order to assess the recovery of the original state. Eventual recovery of the original ground state upon coarsening is seen in two-dimensional Ising spin glasses and one-dimensional Potts models, while one-dimensional Ising glasses neither lose nor gain overlap with the ground state during the recovery stage. The recovery for the two-dimensional Ising spin glasses suggests scaling relations that lead to a recovery length scale that grows as a power of the aging length scale.
description: 7 pages, 5 figures
Gefahren lauern überall
Creators: name: Lohwasser, Angelika
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Weyl's law on $RCD^*(K,N)$ metric measure spaces
Creators: name: Zhang, Hui-Chun
name: Zhu, Xi-Ping
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: In this paper, we will prove the Weyl's law for the asymptotic formula of Dirichlet eigenvalues on metric measure spaces with generalized Ricci curvature bounded from below.
description: We add some details and update some remarks and the references. The final version
Antiker Abbau mineralischer Rohstoffe im Raume Musawwarat es Sufra (Butana, N-Sudan)
Creators: name: Gabriel, Baldur
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Abundance, Major Element Composition and Size of Components and Matrix in CV, CO and Acfer 094 Chondrites
Creators: name: Ebel, Denton S.
name: Brunner, Chelsea
name: Konrad, Kevin
name: Leftwich, Kristin
name: Erb, Isabelle
name: Lu, Muzhou
name: Rodriguez, Hugo
name: Crapster-Pregont, Ellen J.
name: Friedrich, Jon M.
name: Weisberg, Michael K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The relative abundances and chemical compositions of the macroscopic components or "inclusions" (chondrules and refractory inclusions) and fine-grained mineral matrix in chondritic meteorites provide constraints on astrophysical theories of inclusion formation and chondrite accretion. We present new techniques for analysis of low count per pixel Si, Mg, Ca, Al, Ti and Fe x-ray intensity maps of rock sections, and apply them to large areas of CO and CV chondrites, and the ungrouped Acfer 094 chondrite. For many thousands of manually segmented and type-identified inclusions, we are able to assess, pixel-by-pixel, the major element content of each inclusion. We quantify the total fraction of those elements accounted for by various types of inclusion and matrix. Among CO chondrites, both matrix and inclusion Mg to Si ratios approach the solar (and bulk CO) ratio with increasing petrologic grade, but Si remains enriched in inclusions relative to matrix. The oxidized CV chondrites with higher matrix-inclusion ratios exhibit more severe aqueous alteration (oxidation), and their excess matrix accounts for their higher porosity relative to reduced CV chondrites. Porosity could accommodate an original ice component of matrix as the direct cause of local alteration of oxidized CV chondrites. We confirm that major element abundances among inclusions differ greatly, across a wide range of CO and CV chondrites. These abundances in all cases add up to near-chondritic (solar) bulk abundance ratios in these chondrites, despite wide variations in matrix-inclusion ratios and inclusion sizes: chondrite components are complementary. This "complementarity" provides a robust meteoritic constraint for astrophysical disk models.
description: 72 pages, 18 figures, 8 tables, with supplementary tables (2) and figues (12). Extended digital supplement available
Neue Untersuchungen zur Wasserversorgung von Musawwarat es Sufra - Ergebnisse der Kampagne 2002
Creators: name: Scheibner, Thomas
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Bauaufnahme der Räume 507 - 509 („Heilige Hochzeit“) der Grossen Anlage von Musawwarat es Sufra
Creators: name: Eigner, Dieter
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Bohmian Mechanics
Creators: name: Tumulka, Roderich
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bohmian mechanics, also known as pilot-wave theory or de Broglie-Bohm theory, is a formulation of quantum mechanics whose fundamental axioms are not about what observers will see if they perform an experiment but about what happens in reality. It is therefore called a "quantum theory without observers," alongside with collapse theories and many-worlds theories and in contrast to orthodox quantum mechanics. It follows from these axioms that in a universe governed by Bohmian mechanics, observers will see outcomes with exactly the probabilities specified by the usual rules of quantum mechanics for empirical predictions. Specifically, Bohmian mechanics asserts that electrons and other elementary particles have a definite position at every time and move according to an equation of motion that is one of the fundamental laws of the theory and involves a wave function that evolves according to the usual Schrödinger equation. Bohmian mechanics is named after David Bohm (1917-1992), who was, although not the first to consider this theory, the first to realize (in 1952) that it actually makes correct predictions.
description: 21 pages LaTeX, 1 figure
Restaurierungskampagne der SAG 2001 in Musawwarat es Sufra
Creators: name: Wenig, Steffen
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2022

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Bd. 13 (2002): Der Antike Sudan
Novel doping alternatives for single-layer transition metal dichalcogenides
Creators: name: Onofrio, Nicolas
name: Guzman, David
name: Strachan, Alejandro
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Successful doping of single-layer transition metal dichalcogenides (TMDs) remains a formidable barrier to their incorporation into a range of technologies. We use density functional theory to study doping of molybdenum and tungsten dichalcogenides with a large fraction of the periodic table. An automated analysis of the energetics, atomic and electronic structure of thousands of calculations results in insightful trends across the periodic table and points out promising dopants to be pursued experimentally. Beyond previously studied cases, our predictions suggest promising substitutional dopants that result in p-type transport and reveal interesting physics behind the substitution of the metal site. Doping with early transition metals (TMs) leads to tensile strain and a significant reduction in the bandgap. The bandgap increases and strain is reduced as the d-states are filled into the mid TMs; these trends reverse are we move into the late TMs. Additionally, the Fermi energy increases monotonously as the d-shell is filled from the early to mid TMs and we observe few to no gap states indicating the possibility of both p- (early TMs) and n- (mid TMs) type doping. Quite surprisingly, the simulations indicate the possibility of interstitial doping of TMDs; the energetics reveal that a significant number of dopants, increasing in number from molybdenum disulfide to diselenide and to ditelluride, favor the interstitial sites over adsorbed ones. Furthermore, calculations of the activation energy associated with capturing the dopants into the interstitial site indicate that the process is kinetically possible. This suggets that interstitial impurities in TMDs are more common than thought to date and we propose a series of potential interstitial dopants for TMDs relevant for application in nanoelectronics based on a detailed analysis of the predicted electronic structures.
description: 25 pages, 13 figures
Heterogeneous domain adaptation: An unsupervised approach
Creators: name: Liu, Feng
name: Zhang, Guanquan
name: Lu, Jie
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: 15A18 58B10

description: Domain adaptation leverages the knowledge in one domain - the source domain - to improve learning efficiency in another domain - the target domain. Existing heterogeneous domain adaptation research is relatively well-progressed, but only in situations where the target domain contains at least a few labeled instances. In contrast, heterogeneous domain adaptation with an unlabeled target domain has not been well-studied. To contribute to the research in this emerging field, this paper presents: (1) an unsupervised knowledge transfer theorem that guarantees the correctness of transferring knowledge; and (2) a principal angle-based metric to measure the distance between two pairs of domains: one pair comprises the original source and target domains and the other pair comprises two homogeneous representations of two domains. The theorem and the metric have been implemented in an innovative transfer model, called a Grassmann-Linear monotonic maps-geodesic flow kernel (GLG), that is specifically designed for heterogeneous unsupervised domain adaptation (HeUDA). The linear monotonic maps meet the conditions of the theorem and are used to construct homogeneous representations of the heterogeneous domains. The metric shows the extent to which the homogeneous representations have preserved the information in the original source and target domains. By minimizing the proposed metric, the GLG model learns the homogeneous representations of heterogeneous domains and transfers knowledge through these learned representations via a geodesic flow kernel. To evaluate the model, five public datasets were reorganized into ten HeUDA tasks across three applications: cancer detection, credit assessment, and text classification. The experiments demonstrate that the proposed model delivers superior performance over the existing baselines.
description: This paper has been accepted by IEEE transactions on neural networks and learning systems (TNNLS)
The Joule--Thomson and Joule--Thomson-like effects of the black holes in a cavity
Creators: name: Li, Nan
name: Li, Jin-Yu
name: Su, Bing-Yu
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: When a black hole is enclosed in a cavity in asymptotically flat space, an effective volume can be introduced, and an effective pressure can be further defined as its conjugate variable. By this means, an extended phase space is constructed in a cavity, which resembles that in the anti-de Sitter (AdS) space in many aspects. However, there are still some notable dissimilarities simultaneously. In this work, the Joule--Thomson (JT) effect of the black holes, widely discussed in the AdS space as an isenthalpic (constant-mass) process, is shown to only have cooling region in a cavity. On the contrary, in a constant-thermal-energy process (the JT-like effect), there is only heating region in a cavity. Altogether, different from the AdS case, there is no inversion temperature or inversion curve in a cavity. Our work reveals the subtle discrepancy between the two different extended phase spaces that is sensitive to the specific boundary conditions.
description: 19 pages, 2 figures