cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flavor isospin waves in one-dimensional axisymmetric neutrino gases
Creators: name: Duan, Huaiyu
name: Martin, Joshua D.
name: Omanakuttan, Sivaprasad
Publisher: name: arXiv
Year: 2021
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: Flavor oscillations can occur on very short spatial and temporal scales in the dense neutrino media in a core-collapse supernova (CCSN) or binary neutron star merger (BNSM) event. Although the dispersion relations (DRs) of the fast neutrino oscillations can be obtained by linearizing the equations of motion (EoM) before the emergence of any significant flavor conversion, one largely depends on numerical calculations to understand this interesting phenomenon in the nonlinear regime. In this work we demonstrate that there exist nontrivial solutions to the flavor EoM that govern the fast oscillations in one-dimensional axisymmetric neutrino gases. These solutions represent a coherent flavor isospin wave similar to the magnetic spin wave in a lattice of magnetic dipoles. We also compute the DRs of such waves in some example cases which are closely related to the DRs of the fast neutrino oscillations obtained in the linear regime. This result sheds new light on the long-term behavior of fast neutrino oscillations which can have various implications for the CCSN and BNSM events.
description: 11 pages, 9 figures. Minor changes. Version appeared in PRD
Report on Screening Test of Dazhou Superior Ramie Germplasm Resources
Creators: name: LI Yaling
name: CUI Zhonggang
name: GUO Yun
name: TANG Zhaoxia
name: YANG Yan
name: WU Wenmei
name: ZHANG Zhonghua
name: LI Yaling
name: CUI Zhonggang
name: GUO Yun
name: TANG Zhaoxia
name: YANG Yan
name: WU Wenmei
name: ZHANG Zhonghua
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Ramie, Germplasm resources, Growth potential, Resistance, Raw fiber yield, Fiber fineness

description: [Objectives] To promote the development of the ramie industry in Dazhou City of Sichuan Province and provide a material basis for the breeding of new ramie varieties. [Methods] The Institute of Bast Fiber Crops of Dazhou Academy of Agricultural Sciences performed a screening test of excellent ramie germplasm resources from 2017 to 2019 to compare the growth, resistance, raw fiber yield and fiber fineness of the experimental materials. [Results] All the experimental materials showed strong growth potential, drought resistance and disease resistance. There were 8 kinds of resources with a fiber fineness greater than 2 000 m/g, of which 3 kinds of resource materials had a fiber fineness greater than 2 300 m/g; 12 kinds of resources has the raw fiber yield exceeding the control and 10 kinds of resources had the raw fiber yield ≥ 2 000 ㎏/ha; 3 kinds of resources met the requirements of the high-yield and high-quality indicators (fiber fineness exceeding 2 000 m/g and raw fiber yield ≥ 2 000 ㎏/ha), they were BD0718, BD1614 and BYL2. [Conclusions] These high-quality ramie resources can provide a rich resource base for the breeding of new ramie varieties.
Advances in Research of Cutting Breeding Technology of Xanthoceras sorbifolium Bunge
Creators: name: LIU Tao
name: YU Mei
name: WANG Lei
name: WU Dan
name: XIE   Xiaoman
name: WANG Zhen
name: ZHANG Xueyong
name: ZHAO Yongjun
name: LIU Tao
name: YU Mei
name: WANG Lei
name: WU Dan
name: XIE   Xiaoman
name: WANG Zhen
name: ZHANG Xueyong
name: ZHAO Yongjun
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Xanthoceras sorbifolium Bunge, Cutting, Rooting rate, Asexual reproduction, Research advances

description: Cutting breeding is an important method of asexual reproduction of Xanthoceras sorbifolium Bunge. At present, it has been found that the factors influencing the cuttings of X. sorbifolium mainly include cutting material type, substrate type, cutting season, cutting material length and thickness, mother tree age, cutting material pretreatment method, hormone species concentration and soaking time. Besides, different regions, control conditions, and germplasm types have different cutting rooting rates. This paper introduced some of the problems in the cuttings of X. sorbifolium, and came up with some recommendations to provide a reference for the future research and technical promotion of X. sorbifolium cuttings.
Derived categories of cubic fourfolds
Creators: name: Kuznetsov, Alexander
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We discuss the structure of the derived category of coherent sheaves on cubic fourfolds of three types: Pfaffian cubics, cubics containing a plane and singular cubics, and discuss its relation to the rationality of these cubics.
description: 18 pages
Reaction of (trialkylstannyl) copper reagents with acetylenic compounds
Creators: name: Chong, John Michael
Publisher: name: University of British Columbia
Year: 2010

description: The reaction of a number of (trialkylstannyl)copper reagents with 2-alkynoates, N,N-dimethyl-2-alkynaraides and 1-alkynes is described. It has been found that the (trimethylstannyl)copper reagents 14 and 43-46 efficiently transfer the trimethylstannyl group to oc-alkynoates. Reagent 14 (THF, -48°C) provided predominantly the (Z)-3-trimethyl-stannyl-2-alkenoate (22), reagents 44 and 45 (THF, -48°C) afforded essentially exclusively the corresponding (E) isomer 21, while reagents 43 and 46 gave a mixture of isomers. Using the above methodology, ethyl 2-pentynoate was converted into either (Z)- or (E)-3-( tri-n-butylstannyl)-2-pentenoate. The (E) isomer was converted into the vinylstannane 188 which was transformed (MeLi, THF, -20°C) into the corresponding stereochemically homogeneous vinyllithium reagent and elaborated into the acyl portion of (±)-triophamine (172), a diacylguanidine recently isolated from Triopha catalinae. Reaction of 2-alkynoates with excess 44 or 45 (THF, 0°C) afforded, as essentially the only products, (E)-2,3-bis(trimethyl-stannyl)-2-alkenoates (115). One member of this new class of compounds, ester 114 (=115, R = Me, R' = Et) was selectively transmetalated (MeLi, THF, -98°C) and the resultant nucleophilic species was allowed to react with a number of reactive electrophiles to produce esters of general structure 141.
Moving Object Detection for Event-based Vision using k-means Clustering
Creators: name: Mondal, Anindya
name: Das, Mayukhmali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Moving object detection is important in computer vision. Event-based cameras are bio-inspired cameras that work by mimicking the working of the human eye. These cameras have multiple advantages over conventional frame-based cameras, like reduced latency, HDR, reduced motion blur during high motion, low power consumption, etc. In spite of these advantages, event-based cameras are noise-sensitive and have low resolution. Moreover, the task of moving object detection in these cameras is difficult, as event-based sensors lack useful visual features like texture and color. In this paper, we investigate the application of the k-means clustering technique in detecting moving objects in event-based data.
description: Nine pages, five figures, Published in 2021 IEEE 8th Uttar Pradesh Section International Conference on Electrical, Electronics and Computer Engineering (UPCON)
Renormalization and Induced Gauge Action on a Noncommutative Space
Creators: name: Grosse, Harald
name: Wohlgenannt, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Field theories on deformed spaces suffer from the IR/UV mxing and renormalization is generically spoiled. In work with R. Wulkenhaar, one of us realized a way to cure this desease by adding one more marginal operator. We review these ideas, show the application to $ϕ^3$ models and use heat kernel expansion methods for a scalar field theory coupled to an external gauge field on a $θ$-deformed space and derive noncommutative gauge actions.
description: 20 pages; to appear in the proceedings of the 21st Nishinomiya-Yukawa Memorial Symposium Noncommutative geometry and quantum spacetime in physics, Nishinomiya and Kyoto (Japan), 2006
Introduction Performance of Aornia melanocarpa in 4 Districts of Tianjin
Creators: name: WANG Chenxi
name: XIE Jingyuan
name: PEI Yi
name: XU Wen
name: NIE Jiangli
name: SU Ya
name: WANG Chenxi
name: XIE Jingyuan
name: PEI Yi
name: XU Wen
name: NIE Jiangli
name: SU Ya
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Aornia melanocarpa, Tianjin, Introduction

description: [Objectives] To enrich the species resources of Tianjin, Aornia melanocarpa was introduced and cultivated in 4 districts of Tianjin. [Methods] Two consecutive years of observation in 2018-2019 and research on the phenological period, high yield and fruit economic traits in 4 districts of Tianjin were carried out. [Results] The A. melanocarpa of the Linhai Jiayuan Experimental Site in Jinghai District has larger single fruit weight, higher nutrient composition, stronger plant growth, higher yield and storage stability, so this site can be used as a main planting base for large-scale planting of A. melanocarpa; the experimental site of Tianjin Agricultural University East Campus and the experimental site of Cuiping Lake Science Park of Jizhou District have a sour and astringent taste but relatively low yield, need to be processed as by-products in combination with market prices to determine whether to plant; the experimental site of Tianjin Agricultural University West Campus has low yield, small fruit and poor taste, and the planting effect is the worst among the four experimental sites. [Conclusions] From the overall economic traits of fruits, the fruits produced in the experimental site of Jinghai District have sufficient weight, high solid-acid ratio, and relatively high nutrient content, thus this experimental site can be used as large-scale cultivation base for A. melanocarpa.
Same-sign top pair production in an extra-dimension model of flavor at the CERN Large Hadron Collider
Creators: name: Gao, Jun
name: Li, Chong Sheng
name: Gao, Xiangdong
name: Li, Zhao
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the same-sign top pair production mediated by the first Kluza-Klein (KK) excitation of the gluon in the Randall-Sundrum (RS) model with flavor violation at the Large Hadron Collider (LHC), in which the nonuniversal couplings between fermions and KK gauge bosons will lead to observable tree level flavor-changing neutral current (FCNC) effects. We find that the same-sign top quarks produced in our case have property of high energy and high transverse momentum, and lead to an observable signal in the same-sign dilepton channel even when the mass of the KK gluon reach up to 3 TeV. We further investigate the potential of the LHC to probe the flavor violating parameters and find that the LHC can probe their values down to 0.06.
description: 12 pages, 4 figures; several references added; version appeared in Phys.Rev.D
AdS-CFT and the RHIC fireball
Creators: name: Nastase, Horatiu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this talk I will review my work on the description of high energy scattering in QCD, in particular the fireball observed at RHIC, as well as predictions for the LHC. The aim is to see how much we can learn about actual QCD (nonsupersymmetric, $N_c=3$), without knowing the details of the gravity dual of QCD. Experimental predictions are consistent with data, and important consequences are obtained for the LHC, in particular for the $pp$ collisions. The RHIC and LHC correspond to the regime of Froissart bound saturation, in the Heisenberg model. Asymptotically, the RHIC fireball is mapped to a dual black hole in the IR of the dual. A simple (and unique) scalar field theory model for the RHIC fireball indeed exhibits the properties of the dual black hole: a thermal horizon and aparent information loss.
description: 12 pages, ptptex, contribution to the NFQCD08 Symposium at YITP Kyoto, March 2008; TIT/HEP-583
title: Sexual Harassment in Egypt: An Old Plague in a New Revolutionary Order
Creators: name: Hammad, Hanan
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: body
subject: Egypt
subject: Frauenbewegung
subject: Körper
subject: Revolution
subject: sexual violence
subject: Tahrir
subject: women’s movement
subject: ddc:300

description: The article aims at analyzing sexual harassment in Egypt in changing sociopolitical contexts at various times; I argue that no analysis of the Egyptian revolution is complete without an understanding of these broad sociopolitical conditions that have contributed to the culture of anti-women and sexual violence since the 19th century. I am not suggesting that sexual harassment always took the same form and was practiced with the same level of violence, or even rooted in the same reason(s) throughout that long period of history. Based on archival research, personal observations and intensive interviews with activists I show how sexual harassment increased in violence caused by the state’s heavy-handed security and neoliberal policies.
Models of Neutrino Masses and Mixing
Creators: name: Chen, Mu-Chun
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Neutrino physics has entered an era of precision measurements. With these precise measurements, we may be able to distinguish different models that have been constructed to explain the small neutrino masses and the large mixing among them. In this talk, I review some of the existing theoretical models and their predictions for neutrino oscillations.
description: Talk presented at the 2nd International Colliders to Cosmic Rays Conference (C2CR07), Lake Tahoe, CA, February 25 - March 1, 2007; 8 pages; 2 figures
SUITABILITY ANALYSIS AND SITE SELECTION FOR MUNICIPAL SOLID WASTE DISPOSAL IN NASARAWA TOWN, NASARAWA LOCAL GOVERNMENT AREA, NASARAWA STATE
Creators: name: Chindo, Musa
name: Muhammad, Asadullah
Publisher: name: figshare
Year: 2021
Subjects: subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences

description: Selecting a suitable location for municipal solid waste disposal is a complex process due to the technicalities involve. However, with advances in geospatial technology, this process has been made less strenuous. Thus, using GIS and remote sensing methods, this complex process was successfully achieved for Nasarawa town. Using ArcGIS 10.5 and Envi 4.2, and remotely sensed data, five locations along Nasarawa – Abaji and Nasarawa – Loko roads axis’stotaling about 84.907848 Ha were found to be most suitable for municipal solid wastes disposal in Nasarawa town, based on their land use land cover and elevation characteristics, proximity to the streets and distances away from water bodies
Critical heat flux around strongly-heated nanoparticles
Creators: name: Merabia, Samy
name: Keblinski, Pawel
name: Joly, Laurent
name: Lewis, Laurent
name: Barrat, Jean-Louis
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study heat transfer from a heated nanoparticle into surrounding fluid, using molecular dynamics simulations. We show that the fluid next to the nanoparticle can be heated well above its boiling point without a phase change. Under increasing nanoparticle temperature, the heat flux saturates which is in sharp contrast with the case of flat interfaces, where a critical heat flux is observed followed by development of a vapor layer and heat flux drop. These differences in heat transfer are explained by the curvature induced pressure close to the nanoparticle, which inhibits boiling. When the nanoparticle temperature is much larger than the critical fluid temperature, a very large temperature gradient develops resulting in close to ambient temperature just radius away from the particle surface
Rank-2 Toric Code in Two Dimensions
Creators: name: Oh, Yun-Tak
name: Kim, Jintae
name: Moon, Eun-Gook
name: Han, Jung Hoon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study a two-dimensional spin model obtained by "Higgsing" the rank-2 U(1) lattice gauge theory (LGT) with scalar or vector charges on the L_x * L_y square lattice under the periodic boundary condition (PBC). There are p degrees of freedom per orbital and three orbitals per unit cell in the spin model. The resulting spin model is a stabilizer code consisting of three mutually commuting projectors that are, in turn, obtained by Higgsing the mutually commuting Gauss's law operators and the magnetic field operators in the underlying LGT. The spin model thus obtained is exactly solvable, with the ground state degeneracy (GSD) D given by log_p D=2+(1+delta_{L_x mod p,0})(1+delta_{L_y mod p,0}) when p is a prime number. Two types of dipole excitations, pristine and emergent, are identified. Both the monopoles and the dipoles are free to move, with restrictions on monopoles to hop only by p lattice spacing along with certain directions. The monopole-monopole braiding phase depends on the separation of the x or y coordinates of the initial monopole positions, making it distinct from the ordinary anyon braiding statistics. The monopole-dipole braiding obeys the usual anyonic statistics. Despite the oddity, the monopole-monopole braiding phase can be understood as the Aharonov-Bohm phase of some emergent vector potentials.
description: 19 pages, 9 figures
Statistical Investigation of Connected Structures of Stock Networks in Financial Time Series
Creators: name: Eom, Cheoljun
name: Oh, Gabjin
name: Kim, Seunghwan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: In this study, we have investigated factors of determination which can affect the connected structure of a stock network. The representative index for topological properties of a stock network is the number of links with other stocks. We used the multi-factor model, extensively acknowledged in financial literature. In the multi-factor model, common factors act as independent variables while returns of individual stocks act as dependent variables. We calculated the coefficient of determination, which represents the measurement value of the degree in which dependent variables are explained by independent variables. Therefore, we investigated the relationship between the number of links in the stock network and the coefficient of determination in the multi-factor model. We used individual stocks traded on the market indices of Korea, Japan, Canada, Italy and the UK. The results are as follows. We found that the mean coefficient of determination of stocks with a large number of links have higher values than those with a small number of links with other stocks. These results suggest that common factors are significantly deterministic factors to be taken into account when making a stock network. Furthermore, stocks with a large number of links to other stocks can be more affected by common factors.
description: 11 pages, 2 figures
Synthesis of potential intermediates in the biosynthesis of flavoglaucin
Creators: name: Avelino, Norman G.
Publisher: name: University of British Columbia
Year: 2010

description: Previous work on the biosynthesis of compounds derived by the acyl-polymalonate route is discussed. Flavoglaucin(84), a pigment produced by Aspergillus glaucus, is derived by the acyl-polymalonate route. Feeding experiments using labelled acetate and malonate on flavoglaucin (84), have proven its origin as being from this route, however, no feeding experiments using potential intermediates have been reported. Thus, the initial objective of our research was to synthesize deuterium-labelled compounds which could be regarded as probable intermediates in the biosynthetic route. Subsequent incorporation experiments using cultures of A. glaucus could then provide information which would assist in the elucidation of the biosynthetic sequence leading to flavoglaucin(84). 6-n-heptyl-∝-[deuterio]-2-hydroxybenzaldehyde(92a) and its corresponding acid(92b) are potential intermediates in the biosynthesis of flavoglaucin. Compound(92a) was synthesized from furan(157) and dimethylace-tylene dicarboxylate(158) in eleven steps. Various attempts to synthesize the corresponding acid (92b) from N,N-diethyl-6-n-heptyl-2-methoxybenzairu.de (97), 3-n-hexyl-7-methoxyphthalide (109) , and methyl-6-n-heptyl-∝-[oxo]-2-methoxybenzoate(133) were unsuccessful. The syntheses of 6-n-heptyl-∝-[deuterio]-2-benzyloxybenzaldehyde (165) and 6-n-heptyl-∝-[deuterio]-2-methoxybenzaldehyde were successful but various attempts using several different oxidizing agents failed to oxidize either aldehyde to their corresponding acids.
Jet Launching from Merging Magnetized Binary Neutron Stars with Realistic Equations of State
Creators: name: Ruiz, Milton
name: Tsokaros, Antonios
name: Shapiro, Stuart L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform general relativistic, magnetohydrodynamic (GRMHD) simulations of binary neutron stars in quasi-circular orbit that merge and undergo delayed or prompt collapse to a black hole (BH). The stars are irrotational and modeled using an SLy or an H4 nuclear equation of state. To assess the impact of the initial magnetic field configuration on jet launching, we endow the stars with a purely poloidal magnetic field that is initially unimportant dynamically and is either confined to the stellar interior or extends from the interior into the exterior as in typical pulsars. Consistent with our previous results, we find that only the BH + disk remnants originating from binaries that form hypermassive neutron stars (HMNSs) and undergo delayed collapse can drive magnetically-powered jets. We find that the closer the total mass of the binary is to the threshold value for prompt collapse, the shorter is the time delay between the gravitational wave peak amplitude and jet launching. This time delay also strongly depends on the initial magnetic field configuration. We also find that seed magnetic fields confined to the stellar interior can launch a jet over $\sim 25\,\rm ms$ later than those with pulsar-like magnetic fields. The lifetime of the jet [$Δt\lesssim 150\,\rm ms$] and its outgoing Poynting luminosity [$L_{\rm EM}\sim 10^{52\pm 1}\rm erg/s$] are consistent with typical short gamma-ray burst central engine lifetimes, as well as with the Blandford--Znajek mechanism for launching jets and their associated Poynting luminosities. Our numerical results also suggest that the dynamical ejection of matter can be enhanced by the magnetic field. Therefore, GRMHD studies are required to fully understand kilonova signals from GW170818-like events.
description: 21 pages, 12 figures. Matches published version
Constraints on local primordial non-Gaussianity from large scale structure
Creators: name: Slosar, Anze
name: Hirata, Christopher
name: Seljak, Uros
name: Ho, Shirley
name: Padmanabhan, Nikhil
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent work has shown that the local non-Gaussianity parameter f_NL induces a scale-dependent bias, whose amplitude is growing with scale. Here we first rederive this result within the context of peak-background split formalism and show that it only depends on the assumption of universality of mass function, assuming halo bias only depends on mass. We then use extended Press-Schechter formalism to argue that this assumption may be violated and the scale dependent bias will depend on other properties, such as merging history of halos. In particular, in the limit of recent mergers we find the effect is suppressed. Next we use these predictions in conjunction with a compendium of large scale data to put a limit on the value of f_NL. When combining all data assuming that halo occupation depends only on halo mass, we get a limit of -29 ~ (-65)< f_NL < +70 ~(+93) at 95% (99.7%) confidence. While we use a wide range of datasets, our combined result is dominated by the signal from the SDSS photometric quasar sample. If the latter are modeled as recent mergers then the limits weaken to -31 ~(-96) < f_NL < +70 ~ (+96) . These limits are comparable to the strongest current limits from the WMAP 5 year analysis, with no evidence of a positive signal in f_NL. While the method needs to be thoroughly tested against large scale structure simulations with realistic quasar and galaxy formation models, our results indicate that this is a competitive method relative to CMB and should be further pursued both observationally and theoretically.
description: 18 pages, 5 figures; v2 matches version accepted by JCAP, several small changes in the text, added refs and fixed typos
Nonarchimedean Green functions and dynamics on projective space
Creators: name: Kawaguchi, Shu
name: Silverman, Joseph H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 32P05, : 11G25, 14G20, 32U35, 37F10, 37F50

description: Let F: P^N_K --> P^N_K be a morphism of degree d > 1 defined over a field K that is algebraically closed and complete with respect to a nonarchimedean absolute value. We prove that a modified Green function G_F associated to F is Holder continuous on P^N(K) and that the Fatou set F is equal to the set of points at which G_F is locally constant. Further, G_F vanishes precisely on the set of points P such that F has good reduction at every point in the forward orbit of P. We also prove that the iterates of F are locally uniformly Lipschitz on the Fatou set of F.
description: 30 pages. Minor corrections and updated references
A stochastic model for tumor growth with immunization
Creators: name: Bose, Thomas
name: Trimper, Steffen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study a stochastic model for tumor cell growth with both multiplicative and additive colored noise as well as a non-zero cross-correlations in between. Whereas the death rate within the logistic model is altered by a deterministic term characterizing immunization, the birth rate is assumed to be stochastically changed due to biological motivated growth processes leading to a multiplicative internal noise. Moreover, the system is subjected to an external additive noise which mimics the influence of the environment of the tumor. The stationary probability distribution Ps is derived depending on the finite correlation time, the immunization rate and the strength of the crosscorrelation. Ps offers a maximum which becomes more pronounced for increasing immunization rate. The mean-first passage time is also calculated in order to find out under which conditions the tumor can suffer extinction. Its characteristics is again controlled by the degree of immunization and the strength of the cross-correlation. The behavior observed can be interpreted in terms of the three state model of a tumor population.
description: 21 pages, 10 figures
title: From Salafi Preaching to Political Preaching: Women’s Turnout and the Evolution of Salafi Movements in Egypt
Creators: name: Bouras, Naïma
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: Egypt
subject: Frauenbewegung
subject: Medien
subject: politicization
subject: Revolution
subject: Salafism
subject: women’s empowerment
subject: ddc:303

description: This article investigates women’s involvement in the Salafi milieu. We ask how women follow and participate in the politicization of Salafi trends. To answer this question, we analyze, through an inductive approach, their important contributions in spreading Salafi ideology. Then, we investigate their participation – through social networks (e.g., Facebook, Egyptian media) – in the process of Salafi politicization in the aftermath of the 2011 uprising.
Perfect congruences on bisimple $ω$-semigroups
Creators: name: Goberstein, Simon M.
name: Grimshaw, Katherine
name: Kling, Anthony
name: Landry, Therese
name: Li, Freda
Publisher: name: arXiv
Year: 2021
Subjects: subject: Rings and Algebras (math.RA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: A congruence $\varepsilon$ on a semigroup $S$ is perfect if for any congruence classes $x\varepsilon$ and $y\varepsilon$ their product as subsets of $S$ coincides (as a set) with the congruence class $(xy)\varepsilon$. Perfect congruences on the bicyclic semigroup were found in \cite{key7}. Using the structure of bisimple $ω$-semigroups determined in \cite{key25} and the description of congruences on these semigroups found in \cite{key20} and \cite{key1}, we obtain a complete characterization of perfect congruences on all bisimple $ω$-semigroups, substantially generalizing the above mentioned result of \cite{key7}.
Light bending by the cosmological constant
Creators: name: Hu, Lingyi
name: Heavens, Alan
name: Bacon, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We revisit the question of whether the cosmological constant $Λ$ affects the cosmological gravitational bending of light, by numerical integration of the geodesic equations for a Swiss cheese model consisting of a point mass and a compensated vacuole, in a Friedmann-Robertson-Walker background. We find that there is virtually no dependence of the light bending on the cosmological constant that is not already accounted for in the angular diameter distances of the standard lensing equations, plus small modifications that arise because the bending is restricted to a finite region covered by the hole. The residual $Λ$ dependence for a $10^{13}\,M_{\odot}$ lens is at the level of 1 part in $10^7$, and even this might be accounted for by small changes in the hole size evolution as the photon crosses. We therefore conclude that there is no need for modification of the standard cosmological lensing equations in the presence of a cosmological constant.
description: 15 pages, 6 figures. Accepted for publication in JCAP
Theoretical ground for precursors-based molecular spectroscopy
Creators: name: Makhlin, Alexander
name: Papoulias, Panagiotis
name: Surdutovich, Eugene
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A theory for excitation of molecular resonances by a train of precursors is developed. Right at the vacuum-medium interface, a train of incident square waves interacts with light electrons and is converted into a train of precursors, which further excite molecular dipoles. Analytic calculations indicate that these excited dipoles generate radiation, including secondary precursors propagating in the backward direction. Encoded in this radiation are proper frequencies of excited molecular dipoles allowing for spectroscopic measurements. The frequency of the train of incident square pulses can be by several orders of magnitude smaller than the proper frequencies of molecular resonances.
description: 23 pages, 9 figures, submitted to Phys. Rev. A
An Analysis on the Forestry Technology Work after Afforestation
Creators: name: SHI Yulong
name: LI Xue
name: YANG Rujing
name: HUANG Jin
name: ZHANG Yi
name: SHI Yulong
name: LI Xue
name: YANG Rujing
name: HUANG Jin
name: ZHANG Yi
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Afforestation, Environmental protection, Forestry technology

description: In recent years, the concept of "clear waters and green mountains are as good as mountains of gold and silver" has been deeply rooted in the hearts of the people, however, China is still a country with little forest and fragile ecology. This paper expounds the present situation of environmental protection in China, analyzes the main problems and deficiencies in afforestation, puts forward the function of afforestation construction, and makes strategic thinking on environmental protection and afforestation work.
Transient jets in V617 Sagittarii
Creators: name: Steiner, J. E.
name: Oliveira, A. S.
name: Torres, C. A. O.
name: Damineli, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Some of the luminous Compact Binary Supersoft X-Ray sources (CBSS) have shown indications of jets, also called satellites due to their appearance in the spectra. In V Sagittae (V Sge) stars, the galactic counterparts of the CBSS, such features have been reported only for WX Cen. If V Sge stars are indeed the analogs of CBSS, one may expect transient jet emission in other objects of this class. Spectroscopic observations of the V Sge star V617 Sgr have been made, both at high photometric state and at decline. We show that V617 Sgr presents Halpha satellites at high photometric state with velocities of +/-780 km/s. This feature confirms, once more, the CBSS nature of the V Sge stars, however the details of the spectral characteristics also suggest that the two groups of stars display some intrinsic spectroscopic differences, which are likely to be due to a selection effect related to chemical abundance.
description: Four pages, accepted to be published as a Letter in A&A
Embedding property of $J$-holomorphic curves in Calabi-Yau manifolds for generic $J$
Creators: name: Oh, Yong-Geun
name: Zhu, Ke
Publisher: name: arXiv
Year: 2008
Subjects: subject: Symplectic Geometry (math.SG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 53D35(primary), 14H10(secondary)

description: In this paper, we prove that for a generic choice of tame (or compatible) almost complex structures $J$ on a symplectic manifold $(M^{2n},ω)$ with $n \geq 3$ and with its first Chern class $c_1(M,ω) = 0$, all somewhere injective $J$-holomorphic maps from any closed smooth Riemann surface into $M$ are \emph{embedded}. We derive this result as a consequence of the general optimal 1-jet evaluation transversality result of $J$-holomorphic maps in general symplectic manifolds that we also prove in this paper.
description: The exposition of the paper much improved with some clarifications in the Fredholm setting. The proof of 1-jet evaluation transversality is much clarified by correcting minor error in the Fredholm analysis and making precise the choice of Sobolev norms in the proof. A few more references are added
Application Advantages of Fan-Water Curtain Cooling System in Pig Production
Creators: name: LI Taiyin
name: WU Jiarong
name: LIU Kejun
name: DENG Hongying
name: CHEN Zhengyu
name: YANG Qisheng
name: HUANG Chunhua
name: LI Taiyin
name: WU Jiarong
name: LIU Kejun
name: DENG Hongying
name: CHEN Zhengyu
name: YANG Qisheng
name: HUANG Chunhua
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Water curtain, Fan, Fattening pig, Productivity

description: [Objectives] The purpose was to solve the problem that high temperature and high humidity will seriously affect the health and weight gain of pigs. [Methods] The fan-water curtain cooling system was popularized in large-scale pig farms. [Results] The pigs using the water curtain cooling system gained 1.5 kg from weaning to the day of slaughter. The feed-to-gain ratio was 2.43:1, a year-on-year decrease of 0.05. The average weight gain per pig was about 5-10 kg. [Conclusions] The application of fan-water curtain cooling system in pig production can accelerate the growth rate of pigs, reduce the occurrence of diseases and improve the utilization of feed, eventually improving the productivity of pigs.
A duality of scaffolds for translation association schemes
Creators: name: Liang, Xiaoye
name: Tan, Ying-Ying
name: Tanaka, Hajime
name: Wang, Tao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E30, 15A69, 05C20, 05C10

description: Scaffolds are certain tensors arising in the study of association schemes, and have been (implicitly) understood diagrammatically as digraphs with distinguished "root" nodes and with matrix edge weights, often taken from Bose-Mesner algebras. In this paper, we first present a slight modification of Martin's conjecture (2021) concerning a duality of scaffolds whose digraphs are embedded in a closed disk in the plane with root nodes all lying on the boundary circle, and then show that this modified conjecture holds true if we restrict ourselves to the class of translation association schemes, i.e., those association schemes that admit abelian regular automorphism groups.
description: 13 pages
title: Living in a Material World. Entwurf einer queer-feministischen Ökonomie
Creators: name: Bauhardt, Christine
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: Care
subject: Care Ökonomie
subject: Feministischer Materialismus
subject: Kapitalismus
subject: Ökofeminismus
subject: Queer Ecologies
subject: Reproduktion
subject: ReProduktivität
subject: ddc:330

description: Das Zusammendenken von strukturalistischmaterialistischem Feminismus und Neuem materialistischem Feminismus ermöglicht die Weiterentwicklung ökofeministischer Kritik an gesellschaftlichen Naturverhältnissen im Kapitalismus. Ausgehend von der Analyse der Sozialen Reproduktion als materieller Struktur kapitalistischer Produktions- und Machtverhältnisse rückt die materielle Re- Produktivität des Frauenkörpers erneut in den Fokus feministischer Analyse. Die queerökologische Perspektive auf den Nexus von Sexualität, Natur, Weiblichkeit und Sorgeverantwortung dekonstruiert die „Natürlichkeit“ weiblicher ReProduktivität und heterosexueller Mutterschaft. Der Ansatz der Queer Ecologies erweitert die ökofeministische Analyse um eine nicht-heteronormative Konzeption von Sorgeverantwortung für Menschen und Natur, die nicht an heterosexuelle Mutterschaft gebunden ist. Alternative Ökonomien jenseits von kapitalistischen ReProduktionsverhältnissen werden dann nicht nur die Ausbeutung von natürlichen Ressourcen beenden, sondern auch die gesellschaftliche Vernutzung und ökonomische Unsichtbarkeit der Arbeit von Frauen in der Sozialen Reproduktion.
Scrapter basutorum
Creators: name: Mack, Anne
name: Kuhlmann, Michael
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Scrapter
Scrapter basutorum

description: Scrapter basutorum subgroup
In both sexes species in this subgroup can be distinguished from other subgroups by the yellowish or whitish pronotal lobe. The subgroup includes three species (Table 1) that are widespread in the east of South Africa.
description: Published as part of Mack, Anne & Kuhlmann, Michael, 2023, Revision of the nitidus species group of the bee genus Scrapter Lepeletier & Serville, 1828 (Hymenoptera: Apoidea), pp. 1-119 in European Journal of Taxonomy 912 on page 6, DOI: 10.5852/ejt.2023.912.2373, http://zenodo.org/record/10419994
Accretion Disk Sizes from Continuum Reverberation Mapping of AGN Selected from the ZTF Survey
Creators: name: Jha, Vivek Kumar
name: Joshi, Ravi
name: Chand, Hum
name: Wu, Xue-Bing
name: Ho, Luis C.
name: Rastogi, Shantanu
name: Ma, Qinchun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the accretion disk size estimates for a sample of 19 active galactic nuclei (AGN) using the optical $g$, $r$, and $i$ band light curves obtained from the Zwicky Transient Facility (ZTF) survey. All the AGN have reliable supermassive black hole (SMBH) mass estimates based on previous reverberation mapping measurements. The multi-band light curves are cross-correlated, and the reverberation lag is estimated using the Interpolated Cross-Correlation Function (ICCF) method and the Bayesian method using the {\sc javelin} code. As expected from the disk reprocessing arguments, the $g-r$ band lags are shorter than the $g-i$ band lags for this sample. The interband lags for all, but 5 sources, are larger than the sizes predicted from the standard Shakura Sunyaev (SS) analytical model. We fit the light curves directly using a thin disk model implemented through the {\sc javelin} code to get the accretion disk sizes. The disk sizes obtained using this model are on an average 3.9 times larger than the prediction based on the SS disk model. We find a weak correlation between the disk sizes and the known physical parameters, namely, the luminosity and the SMBH mass. In the near future, a large sample of AGN covering broader ranges of luminosity and SMBH mass from large photometric surveys would be helpful in a better understanding of the structure and physics of the accretion disk.
description: 12 pages, 9 Figures. Accepted for publication in MNRAS. This version matches with the accepted version
Effects of Nano Chinese Herbal Medicine Feed Additive on Growth Performance, Meat Quality and Disease Resistance of Chickens
Creators: name: ZOU Zhenxing
name: Nguyen Thi Thanh Hai
name: HU  Yongling
name: ZOU Zhenxing
name: Nguyen Thi Thanh Hai
name: HU  Yongling
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Compound Chinese herbal medicine feed additive, Chicken, Growth performance, Meat quality, Disease resistance

description: [Objectives] To explore the effects of nano compound Chinese herbal medicine feed additive on growth performance, meat quality and disease resistance of chickens. [Methods] Chickens were fed with nano compound Chinese herbal medicine feed additive developed by Hunan Polytechnic of Environment and Biology, including 120 chickens in the treatment group and 120 chickens in the control group (CK). The growth performance indices (body weight gain, feed to gain ratio and slaughter index), meat quality indices (pH value, color, drip loss, shear force) and disease resistance indices (morbidity and mortality) of the chickens in the treatment and CK groups were recorded and determined, respectively. [Results] The inclusion of 2% nano compound Chinese herbal medicine feed additive in the diet significantly increased the growth rate, reduced the feed-to-gain ratio and improved the meat quality of the chickens. Supplementing Chinese herbal medicine could increase the pH value and reduce the drip loss and shear force of chicken meat. At the same time, the body’s immune function, antioxidant level and resistance against diseases of the chickens fed with nano compound Chinese herbal medicine feed additive were improved. [Conclusions] The inclusion of nano compound Chinese herbal medicine feed additive in the diet can improve the growth performance, meat quality and disease resistance of chickens.
Self-consistent triaxial de Zeeuw-Carollo Models
Creators: name: Thakur, Parijat
name: Jiang, Ing-Guey
name: Das, Mousumi
name: Chakraborty, D. K.
name: Ann, H. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the usual method of Schwarzschild to construct self-consistent solutions for the triaxial de Zeeuw & Carollo (1996) models with central density cusps. ZC96 models are triaxial generalisations of spherical $γ$-models of Dehnen whose densities vary as $r^{-γ}$ near the center and $r^{-4}$ at large radii and hence, possess a central density core for $γ=0$ and cusps for $γ> 0$. We consider four triaxial models from ZC96, two prolate triaxials: $(p, q) = (0.65, 0.60)$ with $γ= 1.0$ and 1.5, and two oblate triaxials: $(p, q) = (0.95, 0.60)$ with $γ= 1.0$ and 1.5. We compute 4500 orbits in each model for time periods of $10^{5} T_{D}$. We find that a large fraction of the orbits in each model are stochastic by means of their nonzero Liapunov exponents. The stochastic orbits in each model can sustain regular shapes for $\sim 10^{3} T_{D}$ or longer, which suggests that they diffuse slowly through their allowed phase-space. Except for the oblate triaxial models with $γ=1.0$, our attempts to construct self-consistent solutions employing only the regular orbits fail for the remaining three models. However, the self-consistent solutions are found to exist for all models when the stochastic and regular orbits are treated in the same way because the mixing-time, $\sim10^{4} T_{D}$, is shorter than the integration time, $10^{5} T_{D}$. Moreover, the ``fully-mixed'' solutions can also be constructed for all models when the stochastic orbits are fully mixed at 15 lowest energy shells. Thus, we conclude that the self-consistent solutions exist for our selected prolate and oblate triaxial models with $γ= 1.0$ and 1.5.
description: 6 Pages, 3 Figures, 2 Tables. Accepted for Publication in A&A
Conservative Breeding of Debao Pony in Nanning, Guangxi
Creators: name: YANG Qisheng
name: LIU Kejun
name: CAO Shuwei
name: WANG Zihao
name: CHEN Zhengyu
name: HUANG Chunhua
name: GAN Lu
name: YANG Qisheng
name: LIU Kejun
name: CAO Shuwei
name: WANG Zihao
name: CHEN Zhengyu
name: HUANG Chunhua
name: GAN Lu
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Debao pony, Ex situ, Feeding, Experiment

description: [Objectives] The development of Guangxi Debao pony is very slow, and its quantity and quality have dropped sharply. In order to reduce the deterioration of breeds and the loss of excellent genetic stallions, this study was conducted. [Methods] Modern biological reproduction technology was adopted to protect, breed, develop, purify and rejuvenate the germplasm resources of Debao pony, and a conservation farm was constructed for Debao pony to speed up the development of the industrialization of ponies. [Results] Debao pony is characterized with strong disease resistance and strong adaptability to other places, and the growth indicators are basically consistent with the origin, which is conducive to market promotion. [Conclusions] The start of Guangxi Debao pony ex-situ conservation project will accelerate the development of pony industrialization, and it has particularly important practical significance.