cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Prequantum classical statistical model with infinite dimensional phase-space
Creators: name: Khrennikov, Andrei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that quantum mechanics can be represented as an asymptotic projection of statistical mechanics of classical fields. Thus our approach does not contradict to a rather common opinion that quantum mechanics could not be reduced to statistical mechanics of classical particles. Notions of a system and causality can be reestablished on the prequantum level, but the price is sufficiently high -- the infinite dimension of the phase space. In our approach quantum observables, symmetric operators in the Hilbert space, are obtained as derivatives of the second order of functionals of classical fields. Statistical states are given by Gaussian ensembles of classical fields with zero mean value (so these are vacuum fluctuations) and dispersion $α$ which plays the role of a small parameter of the model (so these are small vacuum fluctuations). Our approach might be called {\it Prequantum Classical Statistical Field Theory} - PCSFT. Our model is well established on the mathematical level. However, to obtain concrete experimental predictions -- deviations of real experimental averages from averages given by the von Neumann trace formula - we should find the energy scale $α$ of prequantum classical fields.
description: We present a more general viewpoint to a small parameter in the representation of QM as an asymptotic projection of Prequantum Classical Statistical Field Theory - PCSFT
Models solvable through the empty-interval method
Creators: name: Aghamohammadi, Amir
name: Khorrami, Mohammad
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The most general one dimensional reaction-diffusion model with nearest-neighbor interactions solvable through the empty interval method, and without any restriction on the particle-generation from two adjacent empty sites is studied. It is shown that turning on the reactions which generate particles from two adjacent empty sites, results in a gap in the spectrum of the evolution operator (or equivalently a finite relaxation time).
description: 8 pages
Smart lighting systems: state-of-the-art and potential applications in warehouse order picking
Creators: name: Füchtenhans, Marc
name: Grosse, Eric H.
name: Glock, Christoph H.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Artificial lighting is a constant companion in everyday private and working life, influencing visibility in interior spaces as well as outdoors. In recent years, new technical solutions have extended traditional lighting systems to become ‘smart’. Different types of smart lighting systems are available on the market today, and researchers have concentrated on analysing their usability and efficiency, especially for private households, office buildings and public streets. This paper presents a systematic literature review to analyse the state-of-knowledge of technologies and applications for smart lighting systems. The results of the review show that smart lighting systems have been frequently discussed in the literature, but that their potentials in industrial environments, such as production and logistics, has rarely been addressed in the literature so far. Lighting systems for industrial environments often have very different requirements depending on the working environment and operating conditions. Based on the results of the literature review, this paper contributes to closing this research gap by discussing the usage potential of smart lighting systems to improve the efficiency of warehouse order picking, which is an application that may benefit from various functions smart lighting systems provide. Several propositions are developed that emphasise research opportunities and managerial implications in this context.
A dual emission mechanism in Sgr A*/L' ?
Creators: name: Clénet, Yann
name: Rouan, Daniel
name: Gratadour, Damien
name: Marco, Olivier
name: Léna, Pierre
name: Ageorges, Nancy
name: Gendron, Eric
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have collected in 2004 adaptive optics corrected L' images of the Galactic Center region with NAOS-CONICA at VLT. A strong variability was observed as well as a correlation between the photocenter positions and fluxes of the L'-band counterpart of Sgr A*. It is interpreted as the combined emission of a point-like flaring source at the position of Sgr A*/IR itself and an extended dust structure, 75 mas south west of Sgr A*/IR, which we name Sgr A*-f. We examine the different possible mechanisms to explain this dual Sgr A* L' emission and conclude it is likely a flaring emission associated to energetic events in the close environment of the black hole plus a quiescent emission resulting from the collision of Sgr A*-f by a jet from Sgr A*.
description: accepted in A&A
Importance of Threshold Corrections in Quark-Lepton Complementarity
Creators: name: Kang, Sin Kyu
name: Kim, C. S.
name: Lee, Jake
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recent experimental measurements of the solar neutrino mixing angle $θ_{sol}$ and the Cabibbo mixing angle $θ_C$ reveal a surprising relation, $ θ_{sol}+θ_C \simeq \fracπ{4}$. We note that the lepton mixing matrix derived from quark-lepton unification can lead to a shift of the complementarity relation at low energy. While the renormalization group effects generally lead to additive contribution on top of the shift, in this letter, we show that the threshold corrections which may exist in some intermediate scale new physics such as supersymmetric standard model can diminish it, so we can achieve the complementarity relation at a low energy. Finally, we discuss a possibility to achieve the complementarity relation at a high energy by taking particular form of non-symmetric form of down Yukawa matrix.
description: 9 pages, no figures, version published in PLB
INCREASING RETURNS AND MARKET EFFICIENCY IN AGRICULTURAL TRADE
Creators: name: Fafchamps, Marcel
name: Gabre-Madhin, Eleni Z.
name: Minten, Bart
name: Fafchamps, Marcel
name: Gabre-Madhin, Eleni Z.
name: Minten, Bart
Publisher: name: Unknown
Year: 2003
Subjects: International Relations/Trade

description: Using detailed trader surveys in Benin, Madagascar, and Malawi, this paper investigates the presence of increasing returns in agricultural trade. After analyzing margins, costs, and value added, we find little evidence of returns to scale. Motorized transport is found more cost effective for large loads on longer distances. But transporters pool quantities from multiple traders. Margin rates show little relationship with transaction size. Personal travel costs are a source of increasing returns, but the effect is small. Consequently, total marketing costs are nearly proportional to transaction size. Working and network capital are key determinants of value added. Constant returns to scale in all accumulable factors--working capital, labor, and network capital--cannot be rejected. This implies that policies to restrict entry into agricultural trade are neither necessary nor useful. Governments should focus instead on technological and institutional innovations to upgrade agricultural markets.
Structure and tidal deformability of a hybrid star within the framework of the field correlator method
Creators: name: Khanmohamadi, S.
name: Moshfegh, H. R.
name: Tehrani, S. Atashbar
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The structure of hybrid stars within the nonperturbative framework of the field correlator method, extended to zero-temperature limit as a quark model, has been studied. For the hadronic sector, we have used the lowest-order constraint variational method by employing AV18 two-body nucleon-nucleon interaction supplemented by the phenomenological Urbana-type three-body force. For an adapted value of the gluon condensate, G2 = 0:006 GeV4, which gives the critical temperature of about Tc ? 170 MeV, stable hybrid stars with a maximum mass of 2:04M? are predicted. The stability of hybrid star has been investigated for a wide range of gluon condensate value, G2, and quark-antiquark potential, V1. A hybrid equation of state fulfills the constraints on tidal deformability and hence on the radii of the stars, extracted from the binary GW170817. Moreover, tidal deformability for different chirp masses and different binary mass ratios of hybrid stars have been studied. The mass-radius relation satisfies the new constraint obtained from the neutron star interior composition explorer (NICER). A comprehensive analysis on the structure of a hybrid star and also its compactness, tidal Love number, and tidal deformability has been conducted for several parameter sets of the quark equation of state. The influence of different crustal equations of state on the mentioned quantities has been studied. Our calculations suggest the value of quark-antiquark potential, V1, to be around 0.08 GeV. The results achieved in this study are in strong concurrence with the other calculations reported on this subject.
description: 37 pages, 8 figures
The cellular heat shock response and thermotolerance of fishes
Creators: name: Nakano, Kazumi
Publisher: name: University of British Columbia
Year: 2009

description: The relationship between the cellular heat shock response and thermotolerance was examined in fishes. The first series of experiments was conducted on fishes from various latitudes whose body and water temperatures range from -1.7 °C in Antarctica to 37 °C in the sub-tropical ocean. Although all fishes synthesized 70-kDa heat shock protein (hsp70) under a heat stress, the induction temperature for hsp70 was strongly correlated with the habitat temperature of the species. A higher hsp70 mRNA level at a near-lethal temperature in the Antarctic fish, Trematomus bernacchii, was not associated with a higher level of hsp70. A part of the translational pathway from hsp70 mRNA to hsp70 might have been modified in this species during adaptation to extreme cold. Thus, they might not be able to increase the level of hsp70, at least, immediately after heat shock. I chose the intertidal cottids as model animals to examine the relationship between the level of hsp70 and the thermotolerance of fish in more detail. The tidepool sculpin (Oligocottus maculosus) is known to be distributed over a wide range of the intertidal zone including upper tidepools where it can experience wider temperature extremes than in lower tidepools that are usually occupied by the fluffy sculpin (O. snyderi). The lethal temperature and the induction temperature for liver hsp70 were higher in the tidepool sculpin, while changes in hsp70 levels were more thermally sensitive in the fluffy sculpin. The relationship between hsp70 mRNA and hsp70 levels in those sculpins under heat shock imply that the cellular concentration of hsp70 may be controlled at the translational level in the tidepool sculpin, and at the transcriptional level in the fluffy sculpin. Higher viability under a severe heat shock at 28 °C was observed in the tidepool sculpin in its natural habitat than in the same species which was acclimated at constant 10 °C for 2 weeks in the laboratory. This result indicates that the fluctuating environment in the intertidal zone may enhance the resistance to heat in this species. Overall results from this study indicate that, although the cellular heat shock response is conserved in various species of fishes, its function as well as the range of functional temperature seems to have been modified during the adaptation to the habitat temperature of the species. Studies in the intertidal sculpins imply that a relatively small difference in the habitat temperature can cause these modifications.
Rosella: A Self-Driving Distributed Scheduler for Heterogeneous Clusters
Creators: name: Wu, Qiong
name: Liu, Zhenming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Large-scale interactive web services and advanced AI applications make sophisticated decisions in real-time, based on executing a massive amount of computation tasks on thousands of servers. Task schedulers, which often operate in heterogeneous and volatile environments, require high throughput, i.e., scheduling millions of tasks per second, and low latency, i.e., incurring minimal scheduling delays for millisecond-level tasks. Scheduling is further complicated by other users' workloads in a shared system, other background activities, and the diverse hardware configurations inside datacenters. We present Rosella, a new self-driving, distributed approach for task scheduling in heterogeneous clusters. Rosella automatically learns the compute environment and adjusts its scheduling policy in real-time. The solution provides high throughput and low latency simultaneously because it runs in parallel on multiple machines with minimum coordination and only performs simple operations for each scheduling decision. Our learning module monitors total system load and uses the information to dynamically determine optimal estimation strategy for the backends' compute-power. Rosella generalizes power-of-two-choice algorithms to handle heterogeneous workers, reducing the max queue length of O(log n) obtained by prior algorithms to O(log log n). We evaluate Rosella with a variety of workloads on a 32-node AWS cluster. Experimental results show that Rosella significantly reduces task response time, and adapts to environment changes quickly.
description: 8 pages
Collisions of strings with Y junctions
Creators: name: Copeland, E. J.
name: Kibble, T. W. B.
name: Steer, D. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the dynamics of Nambu--Goto strings with junctions at which three strings meet. In particular, we exhibit one simple exact solution and examine the process of intercommuting of two straight strings, in which they exchange partners but become joined by a third string. We show that there are important kinematical constraints on this process. The exchange cannot occur if the strings meet with very large relative velocity. This may have important implications for the evolution of cosmic superstring networks and non-abelian string networks.
description: 4 pages, 1 figure, uses revtex 4. Clarifying comments added to correct a conceptual error, reference updated. Version accepted by Phys Rev Letters, with additional references and minor changes
Seek Knowledge even as Far as China: Conversion to Islam in the Nineth Century, An Instructive Entertainment
Creators: name: Tianyu Zhou
Publisher: name: figshare
Year: 2021
Subjects: subject: Anthropology
subject: FOS: Sociology
subject: 140301 Cross-Sectional Analysis
subject: FOS: Economics and business
subject: Sociology

description: This paper is an autobiographical account of a prototypical intellectual in the 9th century who converted from Christianity to Islam. He began with a statement of his Faith as exordium, and then narrated his life in Najrān and his subsequent move to Alexandria where Greek philosophical treatises prepared him for faith in a transcendent, unitary God. At the end, he described his life and studies in Baghdad where he was admitted to the Caliphal circle, having converted to Islam with great devotion. This paper provided original arguments that weaved together philosophical, macro-historical, and psychological factors that explained the massive conversion to Islam after the Islamic Conquest. Under a rationalist-constructivist framework, we argue that the Islamic conversion should be viewed as a spontaneous social phenomenon driven by structural factors specific to the Late Antiquity cultural climate.
Hoekendijk, Johannes Christiaan, Kirche und Volk in der deutschen Missionswissenschaft
Creators: name: Beyerhaus, Peter
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 16 Nr. 4 (1967): Ökumenische Rundschau, Band 16, Heft 4
REGIONALISM: OLD AND NEW, THEORY AND PRACTICE
Creators: name: Burfisher, Mary E.
name: Robinson, Sherman
name: Thierfelder, Karen
name: Burfisher, Mary E.
name: Robinson, Sherman
name: Thierfelder, Karen
Publisher: name: Unknown
Year: 2004
Subjects: Community/Rural/Urban Development

description: In this paper, we review the debate on "new regionalism," focusing on the tools used to evaluate regional trade agreements (RTAs). We find that much analysis uses tools from old trade theory in the Viner-Meade tradition, focusing on trade creation, trade diversion, and terms-of-trade effects. These tools are adequate for the analysis of the effects of removing commodity trade barriers ("shallow" integration), but the comfortable Viner-Meade framework misses many of the impacts associated with new regionalism, which typically involves "deep integration," often between developing and developed countries. A framework for analyzing new regionalism should include dynamic changes such as trade-productivity links and endogenous growth theory, international factor mobility, the role of imperfect competition, rent seeking behavior, and political-economy considerations such as potential conflicts between regionalism and multilateralism. Agriculture poses problems for new regionalism because of high tariffs, the use of domestic subsidies and entrenched special interest groups, but the role of trade liberalization on its productivity is often overlooked. For developing countries, a crucial issue is whether and how regionalism can be part of a successful development strategy. While "new trade theory" is concerned with a number of the issues relevant to new regionalism, and is providing new tools, the work is eclectic and is far from providing a unified framework for empirical analysis of new regionalism. Both theoretical and empirical research is needed to improve the reach and scope of new trade theory applied to issues of new regionalism.
Electron Spin Dynamics and Hyperfine Interactions in Fe/Al_0.1Ga_0.9As/GaAs Spin Injection Heterostructures
Creators: name: Strand, J.
name: Lou, X.
name: Adelmann, C.
name: Schultz, B. D.
name: Isakovic, A. F.
name: Palmstrom, C. J.
name: Crowell, P. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied hyperfine interactions between spin-polarized electrons and lattice nuclei in Al_0.1Ga_0.9As/GaAs quantum well (QW) heterostructures. The spin-polarized electrons are electrically injected into the semiconductor heterostructure from a metallic ferromagnet across a Schottky tunnel barrier. The spin-polarized electron current dynamically polarizes the nuclei in the QW, and the polarized nuclei in turn alter the electron spin dynamics. The steady-state electron spin is detected via the circular polarization of the emitted electroluminescence. The nuclear polarization and electron spin dynamics are accurately modeled using the formalism of optical orientation in GaAs. The nuclear spin polarization in the QW is found to depend strongly on the electron spin polarization in the QW, but only weakly on the electron density in the QW. We are able to observe nuclear magnetic resonance (NMR) at low applied magnetic fields on the order of a few hundred Oe by electrically modulating the spin injected into the QW. The electrically driven NMR demonstrates explicitly the existence of a Knight field felt by the nuclei due to the electron spin.
description: 19 Figures - submitted to PRB
LIVESTOCK INTENSIFICATION AND SMALLHOLDERS: A RAPID RECONNAISSANCE OF THE PHILIPPINES HOG AND POULTRY SECTORS
Creators: name: Rola, Agnes
name: Rola, Walfredo
name: Tiongco, Marites M.
name: Delgado, Christopher L.
name: Rola, Agnes
name: Rola, Walfredo
name: Tiongco, Marites M.
name: Delgado, Christopher L.
Publisher: name: Unknown
Year: 2003
Subjects: Livestock Production/Industries

description: This essay describes the views of Philippines livestock sector stakeholders concerning the events and issues associated with the rapid rise in hog and poultry production, based on rapid reconnaissance interviews and gray literature from studies in Southern Luzon, Iloilo and Northern Mindanao, and the impressions of the authors. Changing demographic patterns, decentralized eco-governance, trade liberalization, and health and environmental policies have major impacts on further livestock intensification and on increasing scale of operations. Six factors appear to affect small farmers' decisions to intensify or raise livestock, or remain in the livestock industry. These are 1) access to financial capital; 2) technical knowledge about livestock production and their sources of information; 3) social capital expressed as trust in integrators, in the primary buyers of the livestock, and in government; 4) demographic characteristics, such as gender and age; 5) farmer perceptions of the policy environment (prices, feeds, health and environmental policies, and the local ordinances affecting the livestock sector); and 6) access to reliable markets for outputs across the year.
Electronic Transport of Two-Dimensional Ultrawide Bandgap Material h-BeO
Creators: name: Ge, Yanfeng
name: Wan, Wenhui
name: Ren, Yulu
name: Li, Fei
name: Liu, Yong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional ultrawide bandgap materials, with bandgaps significantly wider than 3.4 eV, have compelling potential advantages in nano high-power semiconductor, deep-ultraviolet optoelectronics, and so on. Recently, two-dimensional layered h-BeO has been synthesized in the experiments. In the present work, the first-principles calculations predict that monolayer h-BeO has an indirect bandgap of 7.05 eV with the HSE functional. The ultrawide bandgap results from the two atomic electronegativity difference in the polar h-BeO. And the electronic transport properties are also systematically investigated by using the Boltzmann transport theory. The polar LO phonons of h-BeO can generate the macroscopic polarization field and strongly couple to electrons by the Frohlich interaction. Limited by the electron-phonon scattering, monolayer h-BeO has a high mobility of 473 cm^2/Vs at room temperature. Further studies indicate that the biaxial tensile strain can reduce the electronic effective mass and enhance the electron-phonon coupling strength. The suitable strain can promote the mobility to ~1000 cm^2/Vs at room temperature.
description: 5 pages, 4 figures
A complete solution of a Constrained System: SUSY Monopole Quantum Mechanics
Creators: name: Hong, Soon-Tae
name: Lee, Joohan
name: Lee, Tae Hoon
name: Oh, Phillial
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We solve the quantum mechanical problem of a charged particle on S^2 in the background of a magnetic monopole for both bosonic and supersymmetric cases by constructing Hilbert space and realizing the fundamental operators obeying complicated Dirac bracket relations in terms of differential operators. We find the complete energy eigenfunctions. Using the lowest energy eigenstates we count the number of degeneracies and examine the supersymmetric structure of the ground states in detail.
description: 20 pages including the title, prepared in JHEP format
Stress response and structural transitions in sheared gyroidal and lamellar amphiphilic mesophases: lattice-Boltzmann simulations
Creators: name: Gonzalez-Segredo, Nelido
name: Harting, Jens
name: Giupponi, Giovanni
name: Coveney, Peter V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report on the stress response of gyroidal and lamellar amphiphilic mesophases to steady shear simulated using a bottom-up lattice-Boltzmann model for amphiphilic fluids and sliding periodic (Lees-Edwards) boundary conditions. We study the gyroid per se (above the sponge-gyroid transition, of high crystallinity) and the molten gyroid (within such a transition, of shorter-range order). We find that both mesophases exhibit shear-thinning, more pronounced and at lower strain rates for the molten gyroid. At late times after the onset of shear, the skeleton of the crystalline gyroid becomes a structure of interconnected irregular tubes and toroidal rings, mostly oriented along the velocity ramp imposed by the shear, in contradistinction with free-energy Langevin-diffusion studies which yield a much simpler structure of disentangled tubes. We also compare the shear stress and deformation of lamellar mesophases with and without amphiphile when subjected to the same shear flow applied normal to the lamellae. We find that the presence of amphiphile allows (a) the shear stress at late times to be higher than in the case without amphiphile, and (b) the formation of rich patterns on the sheared interface, characterised by alternating regions of high and low curvature.
description: 15 pages, 10 figures, Physical Review E, in press
ASSESSING THE APPLICABILITY OF AEROGELS FOR THE ANALYSIS OF SKIN VAPOR SAMPLES IN TERAHERTZ RADIATION
Creators: name: Zasedatel, Viacheslav
name: Tuleneva, Yana
name: Kistenev, Yury
Publisher: name: Китайско-российский семинар по биофотонике и биомедицинской оптике-2023
Year: 2023

description: Skin vapor analysis can be used to assess human health conditions using various biological markers. Detection of markers is possible using highly sensitive terahertz radiation and various sorbents, such as aerogel. The study shows that the aerogel is a transparent absorbent for terahertz radiation, and is also capable of accumulating samples within 5-10 minutes after contact with human skin. In this case, the samples are suitable for research up to 78 hours.
Influence of structure on the optical limiting properties of nanotubes
Creators: name: Izard, Nicolas
name: Billaud, Pierre
name: Riehl, Didier
name: Anglaret, Eric
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the role of carbon nanotubes structure on their optical limiting properties. Samples of different and well-characterized structural features are studied by optical limiting and pump-probe experiments. The influence of the diameter's size on the nano-object is demonstrated. Indeed, both nucleation and growth of gas bubbles are expected to be sensitive to diameter.
Raw Data for the article: Amnion-Derived Mesenchymal Stromal/Stem Cell Paracrine Signals Potentiate Human Liver Organoid Differentiation: Translational Implications for Liver Regeneration
Creators: name: Nigro, Antonio Lo
name: Miceli, Vitale
Publisher: name: Zenodo
Year: 2022
Subjects: 3D liver organoid culture
Hepatic progenitor cell differentiation
Hepatocyte culture
Human amnion-derived mesenchymal stem cells
Liver regeneration

description: The prevalence of end-stage liver diseases has reached very high levels globally. The election treatment for affected patients is orthotopic liver transplantation, which is a very complex procedure, and due to the limited number of suitable organ donors, considerable research is being done on alternative therapeutic options. For instance, the use of cell therapy, such as the transplantation of hepatocytes to promote liver repair/regeneration, has been explored, but standardized protocols to produce suitable human hepatocytes are still limited. On the other hand, liver progenitor and multipotent stem cells offer potential cell sources that could be used clinically. Different studies have reported regarding the therapeutic effects of transplanted mesenchymal stromal/stem cells (MSCs) on end-stage liver diseases. Moreover, it has been shown that delivery of MSC-derived conditioned medium (MSC-CM) can reduce cell death and enhance liver proliferation in fulminant hepatic failure. Therefore, it is believed that MSC-CM contains many factors that probably support liver regeneration. In our work, we used an in vitro model of human liver organoids to study if the paracrine components secreted by human amnion-derived MSCs (hAMSCs) affected liver stem/progenitor cell differentiation. In particular, we differentiated liver organoids derived from bipotent EpCAM+ human liver cells and tested the effects of hAMSC secretome, derived from both two-dimensional (2D) and three-dimensional (3D) hAMSC cultures, on that model. Our analysis showed that conditioned medium (CM) produced by 3D hAMSCs was able to induce an over-expression of mature hepatocyte markers, such as ALB, NTCP, and CYP3A4, compared with both 2D hAMSC cultures and the conventional differentiation medium (DM). These data were confirmed by the over-production of ALB protein and over-activity of CYP3A4 observed in organoids grown in 3D hAMSC-CM. Liver repair dysfunction plays a role in the development of liver diseases, and effective repair likely requires the normal functioning of liver stem/progenitor cells. Herein, we showed that hAMSC-CM produced mainly by 3D cultures had the potential to increase hepatic stem/progenitor cell differentiation, demonstrating that soluble factors secreted by those cells are potentially responsible for the reaction. This work shows a potential approach to improve liver repair/regeneration also in a transplantation setting.
Spinning Strings on Deformed AdS_5 x T^{1,1} with NS B-field
Creators: name: Wang, Xiao-Jun
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study classical spinning closed string configuration on logarithmically deformed AdS_5 x T^{1,1} background with non-trivial Neveu-Schwarz B-field in which IIB string theory is dual to a non-conformal N=1 SU(N+M) x SU(N) gauge theory. The integrability on original AdS_5 x T^{1,1} background are significantly reduced by B-field. We find several spinning string solutions with two different ansatzs. Solutions for point-like strings and few circular strings are explicitly obtained. Folded spinning string solutions along radial direction are shown to be allowed in this background. These solutions exhibit novel properties and bring some challenges to understand them from dual quantum field theory.
description: 26 pages, v.4: The discussions on folded strings was improved
Opinions on the Renewed Interest in Chinese Classical Traditions
Creators: name: Tianyu Zhou
Publisher: name: figshare
Year: 2021
Subjects: subject: 200311 Chinese Languages
subject: FOS: Languages and literature
subject: 210302 Asian History
subject: FOS: History and archaeology
subject: History
subject: 220207 History and Philosophy of the Humanities
subject: FOS: Philosophy, ethics and religion
subject: 220208 History and Philosophy of the Social Sciences
subject: Sociology
subject: FOS: Sociology
subject: 140301 Cross-Sectional Analysis
subject: FOS: Economics and business

description: In this paper, we cautioned against any uncritical reinterpretation and education of Classical Chinese thoughts, which has become part of a rising social movement in recent years. Many of the Confucianist principles in the Classical Heritage are quite irrelevant and often contrary to pursuit of modernity and scientific spirits, and this makes it necessary for students and scholars to adopt a critical perspective that demarcates the divergences and inconsistencies in these ancient thoughts. We argue that the attempt to “go back to the roots” is part of the Chinese traditionalist revival, and it should not become another form of dogmatism which people blindly accept and follow.
On the Accuracy of Hyperspherical Harmonics Approaches to Photonuclear Reactions
Creators: name: Barnea, Nir
name: Leidemann, Winfried
name: Orlandini, Giuseppina
name: Efros, Victor D.
name: Tomusiak, Edward L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using the Lorentz Integral Transform (LIT) method we compare the results for the triton total photodisintegration cross section obtained using the Correlated Hyperspherical Harmonics (CHH) and the Effective Interaction Hyperspherical Harmonics (EIHH) techniques. We show that these two approaches, while rather different both conceptually and computationally, lead to results which coincide within high accuracy. The calculations which include two- and three-body forces are of the same high quality in both cases. We also discuss the comparison of the two approaches in terms of computational efficiency. These results are of major importance in view of applications to the much debated case of the four-nucleon photoabsorption.
description: 12 pages, 3 figures
Trajectories of loose sand samples in the Phase Space of Soil Mechanics
Creators: name: Evesque, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In general, the evolution of soil submitted to simple stress-strain paths is characterised using the 3d phase space (v,p',q) i.e. (specific volume, mean intergranular pressure, deviatoric stress q. When uniaxial compressions is performed at constant lateral pressure p' or at constant mean pressure p', one finds that all trajectories end up at a line of attracting point called the critical-state line via the surface of Roscoe or of Hvorslev depending if the initial volume is the loosest possible one (at a given p') or densest. Trajectories of weakly dense samples are not often reported in this phase space. We find here that they shall present some sigmoid shape as it can be found from soil mechanics argument. This seems to indicate that Roscoe's surface shall exhibit a singularity at the critical point.
description: 4 pages + 1 page, 1 Figure
Anomalies, Chern-Simons Terms and Chiral Delocalization in Extra Dimensions
Creators: name: Hill, Christopher T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Gauge invariant topological interactions, such as the D=5 Chern-Simons terms, are required in models in extra dimensions that split anomaly free representations. The Chern-Simons term is necessary to maintain the overall anomaly cancellations of the theory, but it can have significant, observable, physical effects. The CS-term locks the KK-mode parity to the parity of space-time, leaving a single parity symmetry. It leads to new processes amongst KK-modes, eg, the decay of a KK-mode to a 2-body final state of KK-modes. A formalism for the effective interaction amongst KK-modes is constructed, and the decay of a KK-mode to KK-mode plus zero mode is analyzed as an example. We elaborate the general KK-mode current and anomaly structure of these theories. This includes a detailed study of the triangle diagrams and the associated ``consistent anomalies'' for Weyl spinors on the boundary branes. We also develop the non-abelian formalism. We illustrate this by showing in a simple way how a D=5 Yang-Mills ``quark flavor'' symmetry leads to the D=4 chiral lagrangian of mesons and the quantized Wess-Zumino-Witten term.
description: 51 pages, 3 figures; Corrected typos, amplified discussion
Dynamic van der Waals Theory of two-phase fluids in heat flow
Creators: name: Onuki, Akira
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a dynamic van der Waals theory. It is useful to study phase separation when the temperature varies in space. We show that if heat flow is applied to liquid suspending a gas droplet at zero gravity, a convective flow occurs such that the temperature gradient within the droplet nearly vanishes. As the heat flux is increased, the droplet becomes attached to the heated wall that is wetted by liquid in equilibrium. In one case corresponding to partial wetting by gas, an apparent contact angle can be defined. In the ther case with larger heat flux, the droplet completely wets the heated wall expelling liquid.
description: 6pages, 8figures
A decisional balance measure of readiness for change in Anorexia nervosa
Creators: name: Cockell, Sarah Jane
Publisher: name: University of British Columbia
Year: 2009

description: Women with anorexia nervosa tend to be ambivalent about change and resistant to treatment. A growing number of researchers suggest that this ambivalence must be targeted early on, before attempting to engage clients in action-oriented treatment that focuses on immediate symptom reduction. However, in order to appropriately address client ambivalence, it must be accurately evaluated with empirically validated instruments. The purpose of this thesis was to develop and validate a Decisional Balance (DB) measure of readiness for change in anorexia nervosa. In Study 1, 246 women with anorexia nervosa completed the DB, and a subset completed the DB again one week later. Unlike traditional decisional balance measures that have two factor (pro-con) solutions, factor analytic techniques indicated that a three factor solution provided the best fit for the DB data in this study. These factors included general negative consequences of the disorder (Burdens), valued achievements such as self-control, being very thin, and striving for perfection (Benefits), and using anorexia nervosa as a means for avoiding aversive emotions, challenges, and responsibilities (Avoidance Coping). The DB demonstrated good internal consistency and test-retest stability. In study 2, 80 women with anorexia nervosa completed the DB, along with other measures of readiness for change, as well as measures unrelated to readiness. Support was found for both convergent and divergent validity. Finally, in study 3, 80 women with anorexia nervosa completed the DB, and a measure of anticipated difficulty completing symptom-challenging recovery activities. In addition, participants attempted to complete three recovery activities in the week following initial assessment. Criterion validity was not well supported, most likely because the concurrent and predictive validity measures focused on behavior change, when non-behavioral measures may have been more appropriate. Overall, the results suggest that the DB for anorexia nervosa is a measure of awareness or insight about the functions of this disorder. The theoretical and clinical implications of this research are reviewed and directions for future investigations are proposed.
Search for the Rare Decays B+ --> D(*)+K0s
Creators: name: Aubert, B.
name: Collaboration, BABAR
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on the search for the rare decays $B^+ \to D^{(*)+} K^0_{s}$ in approximately 226 million $Y(\rm 4S)\to b\bar{B}$ decays collected with the BaBar detector at the PEP-II asymmetric-energy $B$ factory at SLAC. We do not observe any significant signal and we set 90% confidence level upper limits on the branching fractions, ${\ensuremath {{\cal B}(\Bp{\to}D^{+}K^0})}$ $<0.5 \times 10^{-5}$ and ${\ensuremath {{\cal B}(\Bp{\to}D^{*+}K^0})}$ $<0.9 \times 10^{-5}$.
description: 8 pages, 3 postscript figures, submitted to Phys. Rev. D
D-Brane Propagation in Two-Dimensional Black Hole Geometries
Creators: name: Nakayama, Yu
name: Rey, Soo-Jong
name: Sugawara, Yuji
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study propagation of D0-brane in two-dimensional Lorentzian black hole backgrounds by the method of boundary conformal field theory of SL(2,R)/U(1) supercoset at level k. Typically, such backgrounds arise as near-horizon geometries of k coincident non-extremal NS5-branes, where 1/k measures curvature of the backgrounds in string unit and hence size of string worldsheet effects. At classical level, string worldsheet effects are suppressed and D0-brane propagation in the Lorentzian black hole geometry is simply given by the Wick rotation of D1-brane contour in the Euclidean black hole geometry. Taking account of string worldsheet effects, boundary state of the Lorentzian D0-brane is formally constructible via Wick rotation from that of the Euclidean D1-brane. However, the construction is subject to ambiguities in boundary conditions. We propose exact boundary states describing the D0-brane, and clarify physical interpretations of various boundary states constructed from different boundary conditions. As it falls into the black hole, the D0-brane radiates off to the horizon and to the infinity. From the boundary states constructed, we compute physical observables of such radiative process. We find that part of the radiation to infinity is in effective thermal distribution at the Hawking temperature. We also find that part of the radiation to horizon is in the Hagedorn distribution, dominated by massive, highly non-relativistic closed string states, much like the tachyon matter. Remarkably, such distribution emerges only after string worldsheet effects are taken exactly into account. From these results, we observe that nature of the radiation distribution changes dramatically across the conifold geometry k=1 (k=3 for the bosonic case), exposing the `string - black hole transition' therein.
description: 51 pages, 5 figures, v2: referece added, note added replying the comment made in hep-th/0602060
A Reversible Dynamic Movement Primitive formulation
Creators: name: Sidiropoulos, Antonis
name: Doulgeri, Zoe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this work, a novel Dynamic Movement Primitive (DMP) formulation is proposed which supports reversibility, i.e. backwards reproduction of a learned trajectory. Apart from sharing all favourable properties of the original DMP, decoupling the teaching of position and velocity profiles and bidirectional drivability along the encoded path are also supported. Original DMP have been extensively used for encoding and reproducing a desired motion pattern in several robotic applications. However, they lack reversibility, which is a useful and expedient property that can be leveraged in many scenarios. The proposed formulation is analyzed theoretically and its practical usefulness is showcased in an assembly by insertion experimental scenario.
Renormalization group approach to multiscale simulation of polycrystalline materials using the phase field crystal model
Creators: name: Goldenfeld, Nigel
name: Athreya, Badrinarayan P.
name: Dantzig, Jonathan A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We propose a computationally-efficient approach to multiscale simulation of polycrystalline materials, based on the phase field crystal (PFC) model. The order parameter describing the density profile at the nanoscale is reconstructed from its slowly-varying amplitude and phase, which satisfy rotationally-covariant equations derivable from the renormalization group. We validate the approach using the example of two-dimensional grain nucleation and growth.
description: New material added with quantitative comparisons of grain boundary energies and demonstrations of computational efficiency
Cosmological Singularities
Creators: name: Esposito, Giampiero
Publisher: name: arXiv
Year: 2005
Subjects: subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: In this expository article we describe the attempt of defining cosmological singularities and we discuss their meaning in classical and quantum cosmology.
description: Expository article
Heidtmann, Günter / Marsch, Wolf-Dieter / u.a., Protestantische Texte aus dem Jahre 1966
Creators: name: Kemper, Claus
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 16 Nr. 4 (1967): Ökumenische Rundschau, Band 16, Heft 4
title: The Bridges of Wadi Ham, Fujairah, U.A.E./ Michele C Ziolkowski, Leslaw T Ziolkowski.
Creators: name: Ziolkowski, Michele
Publisher: name: National Library and Archives
Year: 2016
Subjects: Bridges - United Arab Emirates - Fujairah (Emirate)
Wadi Ham (United Arab Emirates)

The bridges and culverts constructed in Wadi Ham are reflective of the extensive development, which was taking place in the Trucial States before the federation of the United Arab Emirates. These infrastructure projects were initiated and funded by the Tr
Linear perturbative theory of the discrete cosmological N-body problem
Creators: name: Marcos, B.
name: Baertschiger, T.
name: Joyce, M.
name: Gabrielli, A.
name: Labini, F. Sylos
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a perturbative treatment of the evolution under their mutual self-gravity of particles displaced off an infinite perfect lattice, both for a static space and for a homogeneously expanding space as in cosmological N-body simulations. The treatment, analogous to that of perturbations to a crystal in solid state physics, can be seen as a discrete (i.e. particle) generalization of the perturbative solution in the Lagrangian formalism of a self-gravitating fluid. Working to linear order, we show explicitly that this fluid evolution is recovered in the limit that the initial perturbations are restricted to modes of wavelength much larger than the lattice spacing. The full spectrum of eigenvalues of the simple cubic lattice contains both oscillatory modes and unstable modes which grow slightly faster than in the fluid limit. A detailed comparison of our perturbative treatment, at linear order, with full numerical simulations is presented, for two very different classes of initial perturbation spectra. We find that the range of validity is similar to that of the perturbative fluid approximation (i.e. up to close to ``shell-crossing''), but that the accuracy in tracing the evolution is superior. The formalism provides a powerful tool to systematically calculate discreteness effects at early times in cosmological N-body simulations.
description: 25 pages, 21 figures