cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CafeNet: A novel multi-scale context aggregation and multi-level foreground enhancement network for polyp segmentation
Creators: name: Ji, Zhanlin
name: Li, Xiaoyu
name: Wang, Zhiwu
name: Zhang, Haiyang
name: Yuan, Na
name: Zhang, Xueji
name: Ganchev, Ivan
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 40
subject: Engineering

description: The detection of polyps plays a significant role in colonoscopy examinations, cancer diagnosis, and early patient treatment. However, due to the diversity in the size, color, and shape of polyps, as well as the presence of low image contrast with the surrounding mucosa and fuzzy boundaries, precise polyp segmentation remains a challenging task. Furthermore, this task requires excellent real-time performance to promptly and efficiently present predictive results to doctors during colonoscopy examinations. To address these challenges, a novel neural network, called CafeNet, is proposed in this paper for rapid and accurate polyp segmentation. CafeNet utilizes newly designed multi-scale context aggregation (MCA) modules to adapt to the extensive variations in polyp morphology, covering small to large polyps by fusing simplified global contextual information and local information at different scales. Additionally, the proposed network utilizes newly designed multi-level foreground enhancement (MFE) modules to compute and extract differential features between adjacent layers and uses the prediction output from the adjacent lower-layer decoder as a guidance map to enhance the polyp information extracted by the upper-layer encoder, thereby improving the contrast between polyps and the background. The polyp segmentation performance of the proposed CafeNet network is evaluated on five benchmark public datasets using six evaluation metrics. Experimental results indicate that CafeNet outperforms the state-of-the-art networks, while also exhibiting the least parameter count along with excellent real-time operational speed.
Core Issues in Design of Tibetan Grassland Ecological Compensation Mechanism
Creators: name: LIU, Tianping
name: MIAO, Yanjun
name: SUN, Qianlu
name: LIU, Tianping
name: MIAO, Yanjun
name: SUN, Qianlu
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Grassland ecological compensation
subject: Compensation mechanism
subject: Core issues
subject: Tibet

description: Scientific grassland ecological compensation mechanism is favorable for improving the grassland ecological environment and promote the sustainable development of animal husbandry. Combined with actual situations of Tibet, this paper discussed core issues in the design of grassland ecological compensation mechanism, including compensation purpose, compensation subject, compensation object, compensation standard, and compensation method. It pointed out that the design of mechanism is a complex and systematic project. Each issue is complex and varied. The government at all levels should be cautious and make scientific treatment, and should not apply a single solution for all issues.
Visualizing the charge order and topological defects in an overdoped (Bi,Pb)$_2$Sr$_2$CuO$_{6+x}$ superconductor
Creators: name: Fei, Ying
name: Zheng, Yuan
name: Bu, Kunliang
name: Zhang, Wenhao
name: Ding, Ying
name: Zhou, Xingjiang
name: Yin, Yi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Electronic charge order is a symmetry breaking state in high-$T_\mathrm{c}$ cuprate superconductors. In scanning tunneling microscopy, the detected charge-order-induced modulation is an electronic response of the charge order. For an overdoped (Bi,Pb)$_2$Sr$_2$CuO$_{6+x}$ sample, we apply scanning tunneling microscopy to explore local properties of the charge order. The ordering wavevector is non-dispersive with energy, which can be confirmed and determined. By extracting its order-parameter field, we identify dislocations in the stripe structure of the electronic modulation, which correspond to topological defects with an integer winding number of $\pm 1$. Through differential conductance maps over a series of reduced energies, the development of different response of the charge order is observed and a spatial evolution of topological defects is detected. The intensity of charge-order-induced modulation increases with energy and reaches its maximum when approaching the pseudogap energy. In this evolution, the topological defects decrease in density and migrate in space. Furthermore, we observe appearance and disappearance of closely spaced pairs of defects as energy changes. Our experimental results could inspire further studies of the charge order in both high-$T_\mathrm{c}$ cuprate superconductors and other charge density wave materials.
description: 27 pages, 14 figures. Accepted by SCIENCE CHINA Physics, Mechanics & Astronomy
Multiplicity of Charged and Neutral Pions in Deep-Inelastic Scattering of 27.5 GeV Positrons on Hydrogen
Creators: name: The HERMES Collaboration
name: Airapetian, A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of the individual multiplicities of pi+, pi- and pi0 produced in the deep-inelastic scattering of 27.5 GeV positrons on hydrogen are presented. The average charged pion multiplicity is the same as for neutral pions, up to approximately z= 0.7, where z is the fraction of the energy transferred in the scattering process carried by the pion. This result (below z= 0.7) is consistent with isospin invariance. The total energy fraction associated with charged and neutral pions is 0.51 +/- 0.01 (stat.) +/- 0.08 (syst.) and 0.26 +/- 0.01 (stat.) +/- 0.04 (syst.), respectively. For fixed z, the measured multiplicities depend on both the negative squared four momentum transfer Q^2 and the Bjorken variable x. The observed dependence on Q^2 agrees qualitatively with the expected behaviour based on NLO-QCD evolution, while the dependence on x is consistent with that of previous data after corrections have been made for the expected Q^2-dependence.
description: Revised version submitted to the European Physical Journal C; 10 pages, 9 figures, 1 table
SN 2016iet: The Pulsational or Pair Instability Explosion of a Low Metallicity Massive CO Core Embedded in a Dense Hydrogen-Poor Circumstellar Medium
Creators: name: Gomez, Sebastian
name: Berger, Edo
name: Nicholl, Matt
name: Blanchard, Peter K.
name: Villar, V. Ashley
name: Patton, Locke
name: Chornock, Ryan
name: Leja, Joel
name: Hosseinzadeh, Griffin
name: Cowperthwaite, Philip S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present optical photometry and spectroscopy of SN 2016iet, an unprecedented Type I supernova (SN) at $z=0.0676$ with no obvious analog in the existing literature. The peculiar light curve has two roughly equal brightness peaks ($\approx -19$ mag) separated by 100 days, and a subsequent slow decline by 5 mag in 650 rest-frame days. The spectra are dominated by emission lines of calcium and oxygen, with a width of only $3400$ km s$^{-1}$, superposed on a strong blue continuum in the first year, and with a large ratio of $L_{\rm [Ca\,II]}/L_{\rm [O\,I]}\approx 4$ at late times. There is no clear evidence for hydrogen or helium associated with the SN at any phase. We model the light curves with several potential energy sources: radioactive decay, central engine, and circumstellar medium (CSM) interaction. Regardless of the model, the inferred progenitor mass near the end of its life (i.e., CO core mass) is $\gtrsim 55$ M$_\odot$ and up to $120$ M$_\odot$, placing the event in the regime of pulsational pair instability supernovae (PPISNe) or pair instability supernovae (PISNe). The models of CSM interaction provide the most consistent explanation for the light curves and spectra, and require a CSM mass of $\approx 35$ M$_\odot$ ejected in the final decade before explosion. We further find that SN 2016iet is located at an unusually large offset ($16.5$ kpc) from its low metallicity dwarf host galaxy ($Z\approx 0.1$ Z$_\odot$, $M\approx 10^{8.5}$ M$_\odot$), supporting the PPISN/PISN interpretation. In the final spectrum, we detect narrow H$α$ emission at the SN location, likely due to a dim underlying galaxy host or an H II region. Despite the overall consistency of the SN and its unusual environment with PPISNe and PISNe, we find that the inferred properties of SN\,2016iet challenge existing models of such events.
description: 26 Pages, 17 Figures, Submitted to ApJ
Additional file 6 of Psychometric properties of FACIT-Fatigue in systemic lupus erythematosus: a pooled analysis of three phase 3 randomised, double-blind, parallel-group controlled studies (BLISS-SC, BLISS-52, BLISS-76)
Creators: name: Rendas-Baum, Regina
name: Baranwal, Nishtha
name: Joshi, Ashish V.
name: Park, Josephine
name: Kosinski, Mark
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 6: Supplementary Table S5. Model fit statistic for CFA tests of the two-factor model, FACIT-Fatigue.
A projection algorithm on the set of polynomials with two bounds
Creators: name: Pinto, Martin Campos
name: Charles, Frédérique
name: Després, Bruno
name: Herda, Maxime
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65D15, 41A29, 90C20

description: The motivation of this work stems from the numerical approximation of bounded functions by polynomials satisfying the same bounds. The present contribution makes use of the recent algebraic characterization found in [B. Després, Numer. Algorithms, 76(3), (2017)] and [B. Després and M. Herda, Numer. Algorithms, 77(1), (2018)] where an interpretation of monovariate polynomials with two bounds is provided in terms of a quaternion algebra and the Euler four-squares formulas. Thanks to this structure, we generate a new nonlinear projection algorithm onto the set of polynomials with two bounds. The numerical analysis of the method provides theoretical error estimates showing stability and continuity of the projection. Some numerical tests illustrate this novel algorithm for constrained polynomial approximation.
description: Correction of first author's last name which was misspelled in previous version
Problems in Development of Rural E-commerce and Logistics and Recommendations
Creators: name: TANG, Lixin
name: TANG, Lixin
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Rural areas
subject: E-commerce
subject: Logistics
subject: Problems
subject: Recommendations

description: Rural e-commerce and logistics development is of great significance to promote rural economic development and increase farmers’ income. This paper analyzed existing problems in development of rural e-commerce and logistics in China, mainly including objective restriction of rural e-commerce and logistics by economic level, relatively backward capital construction facilities, lack of logistics information service platform, and insufficient professional personnel, and shortage of rural logistics professional personnel, and weak financial support of government. On the basis of these problems, it came up with pertinent recommendations from government, enterprises, and rural areas.
Chonocephalus forcipulus Liu & Chu 2016, sp. nov.
Creators: name: Liu, Guangchun
name: Chu, Mengying
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Phoridae
Chonocephalus
Chonocephalus forcipulus

description: Chonocephalus forcipulus sp. nov. (Figs 1–5, 11–12)
Description. Male. Body generally brown with a pale abdominal venter. Frons brown with a darker ocellar triangle. Only antial and anterolateral bristles clearly differentiated. Postpedicel brown and rounded. Palp strong and about 2 times as long as its greatest breadth. Thorax brownish, dark on top. Scutellum with four fine bristles. Three hairs on upper part of posterior margin of mesopleuron. Legs brown, but all tarsi paler. Front tarsus with a posterodorsal hair palisade on tarsomere 1–4 and tarsomeres 4 and 5 almost same in length. Mid tibia uniformly brown. Hind femur normal and without modification. Wing 1.1–1.2 mm long. Costal index 0.52. Thick veins light brown with tip of costa and vein Rs darker. Thin veins grayish brown and membrane tinged brownish gray. Vein Rs with a vesicle which extends beyond tip of costa. Halter brown. Abdomen with tergites I–VI brown, with only a few short hairs, almost confined to posterior margins. Venter pale grayish with minute, sparse, pale hairs on segments 3–6. Abdominal tergites with fine hairs, little longer in tergites VI. Venter hairs smaller and finer. Hypopygium mainly brown with long hairs, especially in cercus. Left side of epandrium with a dark process before apex, left surstylus and the modified spine lack. Right side of epandrium with a strong process. Bridge strongly developed, dark and M-shaped. Left gonopod long with two bristles and right one lack. Two lobes of hypandrium long, pointed and forceps-shaped.
 Material examined. Holotype. ♂, China, Tibet, Motuo (29.65  N, 95.48  E; elev. 2 118 m), 3 August 2013, leg. Jianfeng Wang. Paratype. 1♂, same data as the holotype.
Distribution. China (Hainan).
Etymology. The specific epithet refers to forceps-shaped lobes of hypandrium.
 Remarks. The species is easily distinguished from other species of the genus by the forceps-shaped lobes of hypandrium, the M-shaped bridge of epandrium and the brown mid tibia. In the key of Disney (2002), the species runs to couplets 3 to C. heymoni. In the key of Disney (2005, 2008) it runs separately to 12 and 25, both to C. heymonsi and C. dominicanus. In the key of Disney (2015), it runs to 33 to C. heymonsi and C. gonocurvatus. However, the new species is distinguished from C. heymonsi and C. dominicanus by the details of hypandrial lobes, right gonopod and the bridge. It is also differed from C. gonocurvatus by the details of anterior process of epandrium and right gonopod of hypandrium.
description: Published as part of Liu, Guangchun & Chu, Mengying, 2016, First record of the scuttle fly genus Chonocephalus Wandolleck (Diptera: Phoridae) from China, with description of a new species, pp. 117-121 in Zoological Systematics 41 (1) on page 119, DOI: 10.11865/zs.201609, http://zenodo.org/record/5364769
Distance-generalized Core Decomposition
Creators: name: Bonchi, Francesco
name: Khan, Arijit
name: Severini, Lorenzo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The $k$-core of a graph is defined as the maximal subgraph in which every vertex is connected to at least $k$ other vertices within that subgraph. In this work we introduce a distance-based generalization of the notion of $k$-core, which we refer to as the $(k,h)$-core, i.e., the maximal subgraph in which every vertex has at least $k$ other vertices at distance $\leq h$ within that subgraph. We study the properties of the $(k,h)$-core showing that it preserves many of the nice features of the classic core decomposition (e.g., its connection with the notion of distance-generalized chromatic number) and it preserves its usefulness to speed-up or approximate distance-generalized notions of dense structures, such as $h$-club. Computing the distance-generalized core decomposition over large networks is intrinsically complex. However, by exploiting clever upper and lower bounds we can partition the computation in a set of totally independent subcomputations, opening the door to top-down exploration and to multithreading, and thus achieving an efficient algorithm.
Interplay between disorder driven Non-Fermi-liquid behavior and magnetism in Ce0.24La0.76Ge compound
Creators: name: Singh, Karan
name: Mukherjee, K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this work, we investigate the magnetic, heat capacity and electrical transport properties of Ce0.6La0.4Ge and Ce0.24La0.76Ge compounds. Our results show that two antiferromagnetic transitions (~ at 4.7 and 2.7 K) exhibited by Ce0.6La0.4Ge are suppressed below 1.8 K for Ce0.24La0.76Ge. Interestingly, for Ce0.24La0.76Ge, susceptibility, heat capacity and electrical resistivity vary with temperature as: T0.75, T0.5 and T1.6 respectively. The observation of such anomalous temperature variation suggests to the Non-Fermi-liquid (NFL) behavior due to the presence of disordered 4f spins due to Ce-site dilution. Under the application of magnetic field, it is noted that a crossover from the NFL to a magnetic state occurs around 2 Tesla, where, short-range correlations among the spins is prevalent due to the dominance of coupling between the magnetic moments via conduction electrons. Magnetoresistance scaling indicates that behavior of disorder driven NFL state is described by the dynamical mean field theory of the spin glass quantum critical point.
description: Accepted in Euro Phys. Letts
Warm Starting of CMA-ES for Contextual Optimization Problems
Creators: name: Sekino, Yuta
name: Uchida, Kento
name: Shirakawa, Shinichi
Publisher: name: arXiv
Year: 2025
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Several practical applications of evolutionary computation possess objective functions that receive the design variables and externally given parameters. Such problems are termed contextual optimization problems. These problems require finding the optimal solutions corresponding to the given context vectors. Existing contextual optimization methods train a policy model to predict the optimal solution from context vectors. However, the performance of such models is limited by their representation ability. By contrast, warm starting methods have been used to initialize evolutionary algorithms on a given problem using the optimization results on similar problems. Because warm starting methods do not consider the context vectors, their performances can be improved on contextual optimization problems. Herein, we propose a covariance matrix adaptation evolution strategy with contextual warm starting (CMA-ES-CWS) to efficiently optimize the contextual optimization problem with a given context vector. The CMA-ES-CWS utilizes the optimization results of past context vectors to train the multivariate Gaussian process regression. Subsequently, the CMA-ES-CWS performs warm starting for a given context vector by initializing the search distribution using posterior distribution of the Gaussian process regression. The results of the numerical simulation suggest that CMA-ES-CWS outperforms the existing contextual optimization and warm starting methods.
description: This paper has been accepted at PPSN2024
Quantum phases of tilted dipolar bosons in two-dimensional optical lattice
Creators: name: Bandyopadhyay, Soumik
name: Bai, Rukmani
name: Pal, Sukla
name: Suthar, K.
name: Nath, Rejish
name: Angom, D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We consider a minimal model to describe the quantum phases of ultracold dipolar bosons in two-dimensional (2D) square optical lattices. The model is a variation of the extended Bose-Hubbard model and apt to study the quantum phases arising from the variation in the tilt angle $θ$ of the dipolar bosons. At low tilt angles $0^{\circ}\leqslantθ\apprle25^{\circ}$, the ground state of the system are phases with checkerboard order, which could be either checkerboard supersolid or checkerboard density wave. For high tilt angles $55^{\circ}\apprgeθ\apprge35^{\circ}$, phases with striped order of supersolid or density wave are preferred. In the intermediate domain $25^{\circ}\apprleθ\apprle35^{\circ}$ an emulsion or SF phase intervenes the transition between the checkerboard and striped phases. The attractive interaction dominates for $θ\apprge55^{\circ}$, which renders the system unstable and there is a density collapse. For our studies we use Gutzwiller mean-field theory to obtain the quantum phases and the phase boundaries. In addition, we calculate the phase boundaries between an incompressible and a compressible phase of the system by considering second order perturbation analysis of the mean-field theory. The analytical results, where applicable, are in excellent agreement with the numerical results.
description: 10 pages, 5 figures
Additional file of Psychometric properties of FACIT-Fatigue in systemic lupus erythematosus: a pooled analysis of three phase 3 randomised, double-blind, parallel-group controlled studies (BLISS-SC, BLISS-52, BLISS-76)
Creators: name: Rendas-Baum, Regina
name: Baranwal, Nishtha
name: Joshi, Ashish V.
name: Park, Josephine
name: Kosinski, Mark
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file of Psychometric properties of FACIT-Fatigue in systemic lupus erythematosus: a pooled analysis of three phase 3 randomised, double-blind, parallel-group controlled studies (BLISS-SC, BLISS-52, BLISS-76)
Basalys Westwood 1833
Creators: name: Hou, Zi
name: Xu, Zaifu
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Diapriidae
Basalys

description: Genus Basalys Westwood, 1833
 Basalys Westwood, 1833: 343; Ashmead, 1893: 407; Masner, 1964: 85; Kozlov, 1978: 594; Nixon, 1980: 10; Huggert, 1982: 189; Masner & Gracía, 2002: 70; Rajmohana, 2006: 28. Type species: Basalys fumipennis Westwood, by monotypy.
Diagnosis. Female antenna 11- or 12-segmented, with abrupt 3- or 4-segmented club. Male antenna 14-segmented. Pronotum usually with thick woolly collar. Notauli absent. Mesoscutellum with distinct basal fovea. Propodeum with area between median keel and plica almost glabrous. Fore wing always with distinct basal vein. Syntergite with anterior margin straight and complete, without notch or furrow (Masner & Gracía, 2002; Rajmohana, 2006).
 Biology. Some of these tiny wasps were reared from Diptera puparia (Wright et al., 1947; Notton, 1991). Several were collected in ant nests (Masner & Gracía, 2002; Loiácono et al., 2013).
Distribution. Worldwilde.
  Key to Chinese species of the genus Basalys (based on female).
 1. Head 1.08 times as long as wide in dorsal view, 1.65 times as long as high in lateral view; head behind eyes slightly wider than mesosoma; eye 1.67 times as long as malar space; petiole with some longitudinal keels on dorsal surface...........  B. sinensis sp. nov.  Head 0.86 times as long as wide in dorsal view, 0.92 times as long as high in lateral view; head behind eyes much wider than mesosoma; eye 2.27 times as long as malar space; petiole without longitudinal keels on dorsal surface....................  B. leleji sp. nov.
description: Published as part of Hou, Zi & Xu, Zaifu, 2016, First record of the genus Basalys Westwood, 1833 (Hymenoptera: Diapriidae) from China, with descriptions of two new species, pp. 337-341 in Zoological Systematics 41 (3) on pages 337-338, DOI: 10.11865/zs.201639, http://zenodo.org/record/5364763
Spontaneous decay of excited atomic states near a carbon nanotube
Creators: name: Bondarev, I. V.
name: Slepyan, G. Ya.
name: Maksimenko, S. A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spontaneous decay process of an excited atom placed inside or outside (near the surface) a carbon nanotube is analyzed. Calculations have been performed for various achiral nanotubes. The effect of the nanotube surface has been demonstrated to dramatically increase the atomic spontaneous decay rate -- by 6 to 7 orders of magnitude compared with that of the same atom in vacuum. Such an increase is associated with the nonradiative decay via surface excitations in the nanotube.
description: 8 pages, 3 figures
First Measurement of $Γ(D*+)$
Creators: name: Ahmed, S.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the first measurement of the D*+ width using 9/fb of e+e- data collected near the Upsilon(4S) resonance by the CLEO II.V detector. Our method uses advanced tracking techniques and a reconstruction method that takes advantage of the small vertical size of the CESR beam spot to measure the energy release distribution from the D*+ -> D0 pi+ decay. We find the D*+ width equals 96+/-4(Statistical)+/-22(Systematic) keV. We also measure the energy release in the decay and compute m(D*+)-m(D0) = 145.412+/-0.002(Statistical)+/-0.012(Systematic) MeV/c**2.
description: 10 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS, submitted to PRL
Le Sommet UE-Afrique 2021 : Quo vadis, compte tenu du Brexit et de la Covid-19 ?
Creators: name: Kohnert, Dirk
Publisher: name: Zenodo
Year: 2021
Subjects: Sommet UE-Afrique
Covid-19
Brexit
Corona
Afrique
UE

description: ABSTRACT & RÉSUMÉ : Every three years, the AU-EU summit reunites African and EU leaders to outline the future direction of cooperation. The 6th summit had been to reaffirm and renew the partnership between the two blocks already in October 2020, but it was pushed back to the first quarter of 2021 or even later due to COVID-19 crisis. Besides, Brussels had to deal with its own post-Brexit situation and its repercussions on EU-Africa relations, excluding the UK. African states, for their part, wanted to renegotiate the EU-Africa partnership and to balance it with new promising Post-Brexit visions of the British premier Johnson about increased economic ties with the African Angloshere. China and other global players compete with the EU and its member states in the new scramble for African resources. Given that Africa is increasingly courted by other partners it could be inclined to successively limit its relations with the EU and see it as a mere provider of aid and security against Islamic terrorism. This trend was reinforced by the fact that the new EU-Africa strategy still hasn't been approved by EU member states. And a timely replacement of the Cotonou Agreement, which expires in November 2021, is open to question. _________________________________________________________________________ RÉSUMÉ : Tous les trois ans, le sommet UA-UE réunit les dirigeants africains et européens pour définir l'orientation future de la coopération. Le 6e sommet devait réaffirmer et renouveler le partenariat entre les deux blocs déjà en octobre 2020, mais il a été repoussé au premier trimestre 2021, ou même plus tard, en raison de la crise du COVID-19. En outre, Bruxelles a dû faire face à sa propre situation post-Brexit, compte tenu l'exclusion du Royaume-Uni, et à ses répercussions sur les relations UE-Afrique. Les États africains, pour leur part, souhaitaient renégocier le partenariat UE-Afrique, et l'équilibrer avec les nouvelles visions post-Brexit prometteuses du Premier ministre britannique Johnson sur le renforcement des liens économiques avec l'Anglosphère africaine. La Chine et d'autres acteurs mondiaux sont en concurrence avec l'UE et ses États membre dans la nouvelle ruée vers les ressources africaines. Étant donné que l'Afrique est de plus en plus courtisée par d'autres partenaires, elle pourrait être encline à limiter successivement ses relations avec l'UE et à la considérer comme un simple fournisseur d'aide et de sécurité contre le terrorisme islamique. Cette tendance a été renforcée par le fait que la nouvelle stratégie UE-Afrique n'a toujours pas été approuvée par les États membres de l'UE. Et un remplacement opportun de l'accord de Cotonou, qui expire en novembre 2021, est sujet à caution.
description: French version of Kohnert, Dirk (2021): The EU-Africa summit 2021 : Quo vadis, in the light of Brexit and Corona
Additional file 3: of Presepsin as a diagnostic marker of sepsis in children and adolescents: a systemic review and meta-analysis
Creators: name: Yoon, Seo
name: Kim, Eun
name: Kim, Ha
name: Ahn, Jong
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Funnel plots for the assessment of publication bias. (DOCX 127 kb)
Disc formation and fragmentation using radiative non-ideal magnetohydrodynamics
Creators: name: Wurster, James
name: Bate, Matthew R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the formation and fragmentation of discs using a suite of three-dimensional smoothed particle radiative magnetohydrodynamics simulations. Our models are initialised as 1M$_\odot$ rotating Bonnor-Ebert spheres that are threaded with a uniform magnetic field. We examine the effect of including ideal and non-ideal magnetic fields, the orientation and strength of the magnetic field, and the initial rotational rate. We follow the gravitational collapse and early evolution of each system until the final classification of the protostellar disc can be determined. Of our 105 models, 41 fragment, 21 form a spiral structure but do not fragment, and another 12 form smooth discs. Fragmentation is more likely to occur for faster initial rotation rates and weaker magnetic fields. For stronger magnetic field strengths, the inclusion of non-ideal MHD promotes disc formation, and several of these models fragment, whereas their ideal MHD counterparts do not. For the models that fragment, there is no correlation between our parameters and where or when the fragmentation occurs. Bipolar outflows are launched in only 17 models, and these models have strong magnetic fields that are initially parallel to the rotation axis. Counter-rotating envelopes form in four slowly-rotating, strong-field models -- including one ideal MHD model -- indicating they form only in a small fraction of the parameter space investigated.
description: 17 pages, 10 figures, accepted for publication in MNRAS
Additional file 4: of Presepsin as a diagnostic marker of sepsis in children and adolescents: a systemic review and meta-analysis
Creators: name: Yoon, Seo
name: Kim, Eun
name: Kim, Ha
name: Ahn, Jong
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Hematology

description: Inter-study heterogeneity (subgroup analysis according to the cut-off value). (DOCX 19 kb)
Single-spin Azimuthal Asymmetries in Electroproduction of Neutral Pions in Semi-inclusive Deep-inelastic Scattering
Creators: name: HERMES Collaboration
name: Airapetian, A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A single-spin asymmetry in the azimuthal distribution of neutral pions relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of positrons off longitudinally polarized protons. The analysing power in the sin(phi) moment of the cross section is 0.019 +/- 0.007(stat.) +/- 0.003(syst.). This result is compared to single-spin asymmetries for charged pion production measured in the same kinematic range. The pi^0 asymmetry is of the same size as the pi^+ asymmetry and shows a similar dependence on the relevant kinematic variables. The asymmetry is described by a phenomenological calculation based on a fragmentation function that represents sensitivity to the transverse polarization of the struck quark.
description: 4 pages, 1 figure, replaced to correct eprint author field, 2nd replacement to correct figure; upper limit of model predictions are corrected. No correction to data or conclusions
Additional file 2: of Presepsin as a diagnostic marker of sepsis in children and adolescents: a systemic review and meta-analysis
Creators: name: Yoon, Seo
name: Kim, Eun
name: Kim, Ha
name: Ahn, Jong
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Inter-study heterogeneity and threshold effect. (DOCX 19 kb)
When Entanglement meets Classical Communications: Quantum Teleportation for the Quantum Internet (Invited Paper)
Creators: name: Cacciapuoti, Angela Sara
name: Caleffi, Marcello
name: Van Meter, Rodney
name: Hanzo, Lajos
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum Teleportation is the key communication functionality of the Quantum Internet, allowing the "transmission' of qubits without either the physical transfer of the particle storing the qubit or the violation of the quantum mechanical principles. Quantum teleportation is facilitated by the action of quantum entanglement, a somewhat counter-intuitive physical phenomenon with no direct counterpart in the classical word. As a consequence, the very concept of the classical communication system model has to be redesigned to account for the peculiarities of quantum teleportation. This re-design is a crucial prerequisite for constructing any effective quantum communication protocol. The aim of this manuscript is to shed light on this key concept, with the objective of allowing the reader: i) to appreciate the fundamental differences between the transmission of classical information versus the teleportation of quantum information; ii) to understand the communications functionalities underlying quantum teleportation, and to grasp the challenges in the design and practical employment of these functionalities; iii) to acknowledge that quantum information is subject to the deleterious effects of a noise process termed as quantum decoherence. This impairment has no direct counterpart in the classical world; iv) to recognize how to contribute to the design and employment of the Quantum Internet.
description: Invited Paper, 53 pages, 18 figures, 2 tables, double column
SU(3)X SU(2)XU(1) Chiral Models from Intersecting D4-/D5-branes
Creators: name: Kataoka, H.
name: Shimojo, M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We clarify RR tadpole cancellation conditions for intersecting D4-/D5-branes. We find all of the D4-brane models which have D=4 three-generation chiral fermions with the SU(3)XSU(2)XU(1)^n symmetries. For the D5-brane case, we present a solution to the conditions which gives exactly the matter contents of standard model with U(1) anomalies.
description: 6 pages, submitted to Progress Letters
$ρ(770)^0$, K$^*(892)^0$ and f$_{0}(980)$ Production in Au-Au and pp Collisions at $\sqrt{s_{NN}}$ = 200 GeV
Creators: name: Fachini, P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Preliminary results on $ρ(770)^0 \to π^{+}π^{-}$, K$^{*}(892)^{0} \to π$K and $f_{0}(980) \to π^{+}π^{-}$ production using the mixed-event technique are presented. The measurements are performed at mid-rapidity by the STAR detector in $\sqrt{s_{NN}}$= 200 GeV Au-Au and pp interactions at RHIC. The results are compared to different measurements at various energies.
description: 4 pages, 6 figures. Talk presented at Quark Matter 2002, Nantes, France, July 18-24, 2002. To appear in the proceedings (Nucl. Phys. A)
Statistical mechanics of strong and weak point vortices in a cylinder
Creators: name: Buhler, Oliver
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The motion of one-hundred point vortices in a circular cylinder is simulated numerically and compared with theoretical predictions based on statistical mechanics. The novel aspect considered here is that the vortices have greatly different circulation strengths. As envisaged by Onsager, such an arrangement leads to a substantial amplification of statistical trends such as the preferred clustering of the strong vortices in either same-signed or oppositely-signed pairs, depending on the overall energy level. A microcanonical ensemble based on the conserved total energy E and angular momentum M for the whole vortex system is then used, in which the few strong vortices are treated as a subsystem in contact with a reservoir composed of the many weak vortices. It is shown that allowing for the finite size of this reservoir is essential in order to predict the statistics of the strong vortices accurately. Notably, this goes beyond the standard canonical ensemble with positive or negative temperature. A certain approximation is then shown to allow a single random sample of uniformly distributed vortex configurations to be used to predict the strong vortex statistics for all possible values of E and M. Detailed predictions for distribution functions are then made for comparison with three simulated cases of near-zero M and low, neutral, or high E. It is found that the statistical mechanics predictions compare remarkably well with the numerical results, including a prediction of vortex accumulation at the cylinder wall for low values of E.
description: In press, Physics of Fluids
The impact of Brexit on Africa in times of the Corona Crisis
Creators: name: Kohnert, Dirk
Publisher: name: Zenodo
Year: 2020
Subjects: Corona
Brexit
United Kingdom
European Union
Sub-Sahara Africa
South Africa
Nigeria
Kenya
African Studies
International Trade
economic recession
informal sector
poverty

description: ABSTRACT & RÉSUMÉ: Despite the Corona crisis, London is pushing ahead with the implementation of Brexit. This will have a profound impact not only on the EU but also on Africa. The British government's vision of a reinvigorated 'Global Britain' relies heavily on a reinforced cooperation with Commonwealth Sub-Saharan Africa. Already the temporary closure of manufacturing supply chains between China and the rest of the world because of the pandemic seriously affected economic activity in GB and the EU. However, African commodity exporters such as Nigeria, South Africa, and Kenya will likely bear the brunt of both the direct and indirect effects of this weaker demand. This will add up to the economic effects of the spread of Corona in Africa. Most likely the vulnerable and the poor in Africa's informal sector will have to suffer the most by both health hazards and the economic decline. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ RÉSUMÉ: Malgré la crise de Corona, Londres poursuit la mise en œuvre du Brexit. Cela aura un impact profond non seulement sur l'UE mais aussi sur l'Afrique. La vision du gouvernement britannique d'une «Grande-Bretagne mondiale» revigorée repose largement sur une coopération renforcée avec l'Afrique subsaharienne du Commonwealth. Déjà, la fermeture temporaire des chaînes d'approvisionnement manufacturières entre la Chine et le reste du monde en raison de la pandémie a sérieusement affecté l'activité économique en GB et dans l'UE. Cependant, les exportateurs africains de matières premières tels que le Nigeria, l'Afrique du Sud et le Kenya supporteront probablement le poids des effets directs et indirects de cette demande plus faible. Cela s'ajoutera aux effets économiques de la propagation de Corona en Afrique. Les personnes vulnérables et pauvres du secteur informel africain devront très probablement souffrir le plus des risques sanitaires et du déclin économique.
description: Updated Version of Kohnert, Dirk (2020): The impact of Brexit on Africa in times of the Corona Crisis. Hamburg: GIGA, June 17, 2020
Performance of prototype BTeV silicon pixel detectors in a high energy pion beam
Creators: name: Appel, J. A.
name: Artuso, M.
name: Butler, J. N.
name: Cancelo, G.
name: Cardoso, G.
name: Cheung, H.
name: Chiodini, G.
name: Christian, D. C.
name: Colautti, A.
name: Coluccia, R.
name: Di Corato, M.
name: Gottschalk, E. E.
name: Hall, B. K.
name: Hoff, J.
name: Kasper, P. A.
name: Kutschke, R.
name: Kwan, S. W.
name: Mekkaoui, A.
name: Menasce, D.
name: Newsom, C.
name: Sala, S.
name: Yarema, R.
name: Wang, J. C.
name: Zimmerman, S.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The silicon pixel vertex detector is a key element of the BTeV spectrometer. Sensors bump-bonded to prototype front-end devices were tested in a high energy pion beam at Fermilab. The spatial resolution and occupancies as a function of the pion incident angle were measured for various sensor-readout combinations. The data are compared with predictions from our Monte Carlo simulation and very good agreement is found.
description: 24 pages, 20 figures
title: CSF hydrothorax diagnosed by radionuclide shuntography: a case report
Creators: name: Koike, Kentaro
Publisher: name: EURORAD
Year: 2021
Subjects: subject: Paediatric radiology
subject: Paediatric
subject: CT
subject: PET-CT
subject: SPECT-CT
subject: Shunts
subject: Developmental disease
subject: Infection
subject: Clinical Cases

description: Clinical History: A 9-year-old boy with Angelman syndrome was admitted due to massive left pleural effusion. The patient had a surgical history of ventriculoperitoneal (VP) shunt placement and fundoplication with gastrostomy. A chest drainage tube was placed, and non-bacterial serous pleural effusion was continuously drained.

description: 9 years, male
Stellar populations of nine passive spiral galaxies from the CALIFA survey: are they progenitors of S0s?
Creators: name: Pak, Mina
name: Lee, Joon Hyeop
name: Jeong, Hyunjin
name: Kim, Suk
name: Smith, Rory
name: Lee, Hye-Ran
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the stellar population properties of passive spiral galaxies in the CALIFA survey. Nine spiral galaxies that have NUV-r > 5 and no/weak nebular emission lines in their spectra are selected as passive spirals. Our passive spirals lie in the redshift range of 0.001 < z < 0.021 and have stellar mass range of 10.2 < log(M_{\star}/M_{\odot}) < 10.8. They clearly lie in the domain of early-type galaxies in the WISE IR color-color diagram. We analyze the stellar populations out to two effective radius, using the best-fitting model to the measured absorption line-strength indices in the Lick/IDS system. We find that stellar populations of the passive spirals span a wide range, even in their centers, and hardly show any common trend amongst themselves either. We compare the passive spirals with S0s selected in the same mass range. S0s cover a wide range in age, metallicity, and [a/Fe], and stellar populations of the passive spirals are encompassed in the spread of the S0 properties. However, the distribution of passive spirals are skewed toward higher values of metallicity, lower [a/Fe], and younger ages at all radii. These results show that passive spirals are possibly related to S0s in their stellar populations. We infer that the diversity in the stellar populations of S0s may result from different evolutionary pathways of S0 formation, and passive spirals may be one of the possible channels.
description: 15 pages, 8 figures, accepted
Additional file 1: of Presepsin as a diagnostic marker of sepsis in children and adolescents: a systemic review and meta-analysis
Creators: name: Yoon, Seo
name: Kim, Eun
name: Kim, Ha
name: Ahn, Jong
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Search Strategy. (DOCX 16 kb)
Universal Behavior of Charged Particle Production in Heavy Ion Collisions
Creators: name: Steinberg, Peter
name: Collaboration, PHOBOS
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The PHOBOS experiment at RHIC has measured the multiplicity of primary charged particles as a function of centrality and pseudorapidity in Au+Au collisions at sqrt(s_NN) = 19.6, 130 and 200 GeV. Two kinds of universal behavior are observed in charged particle production in heavy ion collisions. The first is that forward particle production, over a range of energies, follows a universal limiting curve with a non-trivial centrality dependence. The second arises from comparisons with pp/pbar-p and e+e- data. N_tot/(N_part/2) in nuclear collisions at high energy scales with sqrt(s) in a similar way as N_tot in e+e- collisions and has a very weak centrality dependence. This feature may be related to a reduction in the leading particle effect due to the multiple collisions suffered per participant in heavy ion collisions.
description: 4 Pages, 5 Figures, contributed to the Proceedings of Quark Matter 2002, Nantes, France, 18-24 July 2002
Physics with Beam Tau-Neutrino Appearance at DUNE
Creators: name: de Gouvêa, André
name: Kelly, Kevin J.
name: Stenico, G. V.
name: Pasquini, Pedro
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We explore the capabilities of the upcoming Deep Underground Neutrino Experiment (DUNE) to measure $ν_τ$ charged-current interactions and the associated oscillation probability $P(ν_μ\to ν_τ)$ at its far detector, concentrating on how such results can be used to probe neutrino properties and interactions. DUNE has the potential to identify significantly more $ν_τ$ events than all existing experiments and can use this data sample to nontrivially test the three-massive-neutrinos paradigm by providing complementary measurements to those from the $ν_e$ appearance and $ν_μ$ disappearance channels. We further discuss the sensitivity of the $ν_τ$ appearance channel to several hypotheses for the physics that may lurk beyond the three-massive-neutrinos paradigm: a non-unitary lepton mixing matrix, the $3+1$ light neutrinos hypothesis, and the existence of non-standard neutral-current neutrino interactions. Throughout, we also consider the relative benefits of the proposed high-energy tune of the Long-Baseline Neutrino Facility (LBNF) beam-line.
description: 23 pages, 14 figures, 2 appendices