cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Protostellar disk formation by a non-rotating, non-axisymmetric collapsing cloud: model and comparison with observations
Creators: name: Verliat, Antoine
name: Hennebelle, Patrick
name: Maury, Anaëlle J.
name: Gaudel, Mathilde
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Planet-forming disks are fundamental objects thought to be inherited from large scale rotation, through the conservation of angular momentum during the collapse of a prestellar dense core. We investigate the possibility for a protostellar disk to be formed from a motionless dense core which contains non-axisymmetric density fluctuations. The rotation is thus generated locally by the asymmetry of the collapse. We study the evolution of the angular momentum in a non-axisymmetric collapse of a dense core from an analytical point of view. To test the theory, we perform three-dimensional simulations of a collapsing prestellar dense core using adaptative mesh refinement. We start from a non-axisymmetrical situation, considering a dense core with random density perturbations that follow a turbulence spectrum. We analyse the emerging disk comparing the angular momentum it contains with the one expected from our analytic development. We study the velocity gradients at different scales in the simulation as it is done with observations. We show that the angular momentum in the frame of a stellar object which is not located at the center of mass of the core is not conserved, due to inertial forces. Our simulations of such non-axisymmetrical collapse quickly produce accretion disks at the small scales in the core. The analysis of the kinematics at different scales in the simulated core reveals projected velocity gradients of amplitudes similar to the ones observed in protostellar cores, and which directions vary, sometimes even reversing when small and large scales are compared. These complex kinematics patterns appear in recent observations, and could be a discriminating feature with models where rotation is inherited from large scales. Our results from simulations without initial rotation are more consistent with these recent observations than when solid-body rotation is initially [abridged]
description: Accepted for publication in Astronomy & Astrophysics. 10 pages, 11 figures
Digitivalva piozae Varenne & Nel 2014
Creators: name: Huemer, Peter
name: Van Nieukerken, Erik J.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Glyphipterigidae
Digitivalva
Digitivalva piozae

description: Digitivalva piozae Varenne & Nel, 2014
 Digitivalva piozae Varenne & Nel 2014a: 30, figs. 9–10, 12.
 Examined material. Holotype Ƌ: France, Haute-Corse, Santa-Lucia-di-Mercurio, 6.VII.2013, uv, 770 m, Th. Varenne leg., genitalia slide JN n°26935 (RCTV).
BOLD Specimen ID TLMF 22313; BOLD Sequence ID LEASS665-17.
BIN: BOLD:ADM0567
 Identity: Digitivalva piozae Varenne & Nel, 2014
 Remarks. Digitivalva piozae was described from a male holotype and a female paratype and separated from other species of the genus, namely D. occidentella (Klimesch, 1956) and D. solidaginis (Staudinger, 1859), by genitalia structures (Varenne & Nel 2014a). However, the nearest neighbour to the successfully sequenced holotype is D. reticulella (H̹bner, 1796) with 6.1% divergence. Surprisingly the species is more widely distributed than indicated in the original description, with a sequenced record from Greece (Crete).
description: Published as part of Huemer, Peter & Van Nieukerken, Erik J., 2021, Identity of some recently described Lepidoptera from France-re-assessed with DNA barcodes and morphology, pp. 301-337 in Zootaxa 4941 (3) on page 312, DOI: 10.11646/zootaxa.4941.3.1, http://zenodo.org/record/4595123
On the origin of the giant spin detection efficiency in tunnel barrier based electrical spin detector
Creators: name: Fourneau, Emile
name: Silhanek, Alejandro V.
name: Nguyen, Ngoc Duy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Efficient conversion of a spin signal into an electric voltage in mainstream semiconductors is one of the grand challenges of spintronics. This process is commonly achieved via a ferromagnetic tunnel barrier where non-linear electric transport occurs. In this work, we demonstrate that non-linearity may lead to a spin-to-charge conversion efficiency larger than 10 times the spin polarization of the tunnel barrier when the latter is under bias of a few mV. We identify the underlying mechanisms responsible for this remarkably efficient spin detection as the tunnel barrier deformation and the conduction band shift resulting from a change of applied voltage. In addition, we derive an approximate analytical expression for the detector spin sensitivity $P_{\textrm{det}}(V)$. Calculations performed for different barrier shapes show that this enhancement is present in oxide barriers as well as in Schottky tunnel barriers even if the dominant mechanisms differs with the barrier type. Moreover, although the spin signal is reduced at high temperatures, it remains superior to the value predicted by the linear model. Our findings shed light into the interpretation and understanding of electrical spin detection experiments and open new paths to optimize the performance of spin transport devices.
description: 11 pages, 9 figures
Analysis on Pigment and Photosynthetic Characteristics of Leaves of New Strain of Rehmannia glutinosa
Creators: name: FAN Xing
name: ZHOU Xiaoting
name: WANG  Jun
name: SHANG Xingchen
name: LI Jianjun
name: FAN Xing
name: ZHOU Xiaoting
name: WANG  Jun
name: SHANG Xingchen
name: LI Jianjun
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Rehmannia glutinosa, New strains, Chlorophyll, Anthocyanin, Net photosynthetic rate (Pn)

description: Through the analysis on the leaf color and photosynthetic characteristics of new strains and main cultivars of Rehmannia glutinosa, it is expected to provide theoretical basis for breeding of new varieties. Chlorophyll, anthocyanin, and net photosynthetic rate (Pn), stomatal conductance (Cond), transpiration rate (Tr), and intercellular CO2 concentration (Ci) in 8 varieties of Rehmannia glutinosa were measured by spectrophotometer and LI-6400XT Portable Photosynthesis System. The results showed that the chlorophyll content of Huaidijin 8 (2.84 mg/g), Huaidi 81 (2.71 mg/g), Huaidi 85-5 (2.69 mg/g), Jinjiu (2.66 mg/g) and Huaidi 83 (2.63 mg/g) was higher; the anthocyanin content of Jinjiu (0.169) and Huaidijin 8 (0.165) was higher, while the anthocyanin content Huaidi 83(0.060) was the lowest; Pn of Huaidi 81 [2.41 μmol/(m2·s)], Huaidi 83 [2.37 μmol/(m2·s)] and Huaidijin 8 [2.25 μmol/(m2·s)] was higher, and the anthocyanin content was positively correlated with Pn, while the anthocyanin content was negatively correlated with Pn; Huaidijin 8 and Huaidi 83 showed dominant advantages in single plant fresh weight, indicator component, and resistance over the main cultivars. This indicates that the new variety Huaidijin 8 and Huaidi 83 have excellent comprehensive traits and can be properly popularized.
Critical properties of the spherical model in the microcanonical formalism
Creators: name: Behringer, Hans
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Due to the equivalence of the statistical ensembles thermostatic properties of physical systems with short-range interactions can be calculated in different ensembles leading to the same physics. In particular, the ensemble equivalence holds for systems that undergo a continuous phase transition in the infinite volume limit so that the properties of the transition can also be investigated in the microcanonical approach. Considering as example the spherical model the ensemble equivalence is explicitly demonstrated by calculating the critical properties in the microcanonical ensemble and comparing them to the well-known canonical results.
description: 16 pages, 2 figures
Mezinárodní management geostacionární orbity
Creators: name: Machon, Miloslav
Publisher: name: figshare
Year: 2020
Subjects: subject: 160607 International Relations
subject: FOS: Political science

description: The scope of this article is an introduction of the most discussed political issues in the international management of the geostationary orbit. A geostationary orbit is one of the most favorable geopolitical locations for establishing telecommunication by satellites. The most discussed political issues relating to international management of the geostationary orbit in UNCOPUS, UNOOSA and ITU are matters of territorial claims, direct broadcast by satellites and space debris.
Faith-based peace-building : Mapping and analysis of Christian, Muslim and multi-faith actors
Creators: name: Abu-Nimer, Mohammed
name: Bouta, Tsjeard
name: Kadayifci-Orellana, S. Ayse
Publisher: name: Netherlands Institute of International Relations 'Clingendael' in cooperation with Salam Institute for Peace and Justice, Washington DC
Year: 2023
Subjects: classificationCode: 44
subject: Human society

description: Religion has become an important topic on today’s policy agenda. Policy-makers are no longer able to get around religion’s role in conflict and peace, and in particular in conflict prevention and peace-building. Although religion is often blamed for inciting conflict, it can also help to resolve conflict and decrease tensions. This study focuses on the possible positive role(s) of religion—that is, of faith-based organizations—in building peace.This desk study analyses 27 Christian, Muslim and multi-faith organizations that are working on peace-building in conflict situations. By studying how they operate as peace-builders, the study aims to shed more light on the peace-building potential of faith-based organizations. It particularly aims to advise donors on how they can deal with faith-based peace-building in policy. Based on this first and limited analysis, the authors came to the following findings, donor recommendations and suggestions for follow-up study.
Prochoreutis constellata Nel 2014
Creators: name: Huemer, Peter
name: Van Nieukerken, Erik J.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Choreutidae
Prochoreutis
Prochoreutis constellata

description: Prochoreutis constellata Nel, 2014
 Prochoreutis constellata Nel, 2014b: 4, figs. 1, 6, 11.
 Examined material. Holotype Ƌ: France, Hautes Alpes, Col du Lautaret, 5.VII.2003, 2000 m, J. Nel leg., genitalia slide JN n°16204 (TLMF).
BOLD Specimen ID TLMF 14502; BOLD Sequence ID LASTS050-14.
BIN: BOLD:ADR7881
 Identity: Prochoreutis constellata Nel, 2014
 Remarks. Prochoreutis constellata was described from a male holotype and a single female and compared with several other congeneric species (Nel 2014b). We obtained a full DNA barcode sequence of the holotype which is 6.3% divergent from the nearest neighbour in BOLD, the northern Palearctic P. ultimana (Kurlikovsky, 1909) a species not considered in the original description.
description: Published as part of Huemer, Peter & Van Nieukerken, Erik J., 2021, Identity of some recently described Lepidoptera from France-re-assessed with DNA barcodes and morphology, pp. 301-337 in Zootaxa 4941 (3) on page 312, DOI: 10.11646/zootaxa.4941.3.1, http://zenodo.org/record/4595123
Joint Multi-Dimension Pruning via Numerical Gradient Update
Creators: name: Liu, Zechun
name: Zhang, Xiangyu
name: Shen, Zhiqiang
name: Li, Zhe
name: Wei, Yichen
name: Cheng, Kwang-Ting
name: Sun, Jian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We present joint multi-dimension pruning (abbreviated as JointPruning), an effective method of pruning a network on three crucial aspects: spatial, depth and channel simultaneously. To tackle these three naturally different dimensions, we proposed a general framework by defining pruning as seeking the best pruning vector (i.e., the numerical value of layer-wise channel number, spacial size, depth) and construct a unique mapping from the pruning vector to the pruned network structures. Then we optimize the pruning vector with gradient update and model joint pruning as a numerical gradient optimization process. To overcome the challenge that there is no explicit function between the loss and the pruning vectors, we proposed self-adapted stochastic gradient estimation to construct a gradient path through network loss to pruning vectors and enable efficient gradient update. We show that the joint strategy discovers a better status than previous studies that focused on individual dimensions solely, as our method is optimized collaboratively across the three dimensions in a single end-to-end training and it is more efficient than the previous exhaustive methods. Extensive experiments on large-scale ImageNet dataset across a variety of network architectures MobileNet V1&V2&V3 and ResNet demonstrate the effectiveness of our proposed method. For instance, we achieve significant margins of 2.5% and 2.6% improvement over the state-of-the-art approach on the already compact MobileNet V1&V2 under an extremely large compression ratio.
description: Accepted to IEEE Transactions on Image Processing (TIP) 2021
Media Effect of Students' Ideological and Political Work in Tibetan Agricultural Colleges and Universities
Creators: name: WANG  Hengliang
name: WANG  Hengliang
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Agricultural colleges and universities, Ideological and political work, Media effect, Tibet of China

description: Both the students’ ideological and political work and the media work in agricultural colleges and universities are priorities of agricultural higher education in Tibet. The economic and social development situation in Tibet, especially the modern agricultural development trend in Tibet, provides excellent development opportunities and challenges for both the students’ ideological and political work and the media work in Tibetan agricultural colleges and universities. On the whole, the students’ ideological and political work and the media work should not be treated with discrimination. Instead, they should be effectively integrated and coordinated, to form joint efforts, so as to create a bright spring for agricultural higher education of Tibet.
An Analysis on Mental Health Education of College Students with Financial Difficulties
Creators: name: WANG Shuzhen
name: NI LIng
name: LI Chaoqiong
name: LANG Rui
name: FU Dan
name: WANG Shuzhen
name: NI LIng
name: LI Chaoqiong
name: LANG Rui
name: FU Dan
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: College, Students with financial difficulties, Psychological problems, Mental health education

description: With the enrollment expansion of college and continuous reform of college education system and college charging system, the number of college students with financial difficulties is increasing. The college students with family financial difficulties not only bear the huge economic burden, but also bear the huge pressure of learning and mental stress, and they have many kinds of psychological problems including psychological distress of tension and anxiety, psychological conflict of self-respect and self-abasement, conflict of desire for interpersonal interaction and self-containment and strong vanity and dependence mentality. This paper puts forward the corresponding recommendations to solve these problems.
Reconciliation in the Israeli-Palestinian Conflict : A position paper
Creators: name: Abu-Nimer, Mohammed
name: Kahanoff, Maya
name: Levanon, Ofer Shinar
Publisher: name: Parents Circle-Families Forum
Year: 2023
Subjects: classificationCode: 44
subject: Human society

description: Abu-Nimer, M., Kahanoff, M., & Levanon, O. S. (2014). Reconciliation in the Israeli-Palestinian Conflict: A position paper.
An Empirical Analysis on Mental Health of Agricultural College Students
Creators: name: FU Dan
name: MA Ning
name: WANG Shuzhen
name: FU Dan
name: MA Ning
name: WANG Shuzhen
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: College students, Mental health, Current situation, Recommendations

description: Based on the empirical survey of 2013-2016 college students in Northwest A&F University, we analyze the 9260 valid samples, and the survey involves emotional state, self-worth, psychological adjustment capacity and students' attitude towards mental health education. On the basis of statistical data, we summarize the general situation of agricultural college students' mental health, analyze the problems in agricultural college students' psychological development and bring forward the feasible recommendations.
A metallic phase in lightly doped La$_{2-x}$Sr$_{x}$CuO$_{4}$ observed by electron paramagnetic resonance
Creators: name: Shengelaya, A.
name: Bruun, M.
name: Kochelaev, B. I.
name: Safina, A.
name: Conder, K.
name: Muller, K. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In the low doping range of $x$ from 0.01 to 0.06 in La$_{2-x}$Sr$_{x}$CuO$_{4}$, a narrow electron paramagnetic resonance (EPR) line has been investigated. This line is distinct from the known broad line, both due to probing Mn$^{2+}$ ions. The narrow line is ascribed to metallic regions in the material, and its intensity increases exponentially upon cooling below $\sim$ 150 K. The activation energy deduced $Δ$ = 460(50) K is nearly the same as that found in the doped superconducting regime by Raman and neutron scattering. The intensity of the narrow EPR line follows the same temperature dependence as the resistivity anisotropy in lightly doped La$_{2-x}$Sr$_{x}$CuO$_{4}$ single crystals.
description: 4 pages, 4 figures
The Changes of Meteorological Quantities During Solar Eclipses
Creators: name: Machon, Miloslav
Publisher: name: figshare
Year: 2020
Subjects: subject: 40107 Meteorology
subject: FOS: Earth and related environmental sciences

description: The subject of this work is a study of the changes of meteorological and physical quantities during annular and total solar eclipse. Its content is founded on the measurements of the quantities that were implemented during annular solar eclipse in Spain in 2005 and total solar eclipse in 2006 in Turkey. There are an experiment and measuring devices used for measurements described in the first part of the work. There is also short reference of project’s history. Main principles for successful performance of measurement and description of data processing are stated in the methodics. The content of the next part is mainly about the characteristics of the solar eclipse during which the measurements were made. In this part the reader can even get to know about the state of the observation sites. The concise characteristic of measured quantities is stated in the fourth part the work. The largest part of the work is set of descriptions of changes meteorological and physical quantities during annular and total solar eclipse. A reader can find graphic and numerical data processing here. There are the main differences in progressions of the changes meteorological and physical quantities during annular and total solar eclipse mentioned in the conclusion of the work, and even the assessment of the project and recommendations for eventual other measurements are not missing in this part. There are also the appendixes included in the work, which inlude all graphs in high resolution, photos of measuring devices and the recordings of meteorological situation. The photos created by satellite MSG-1 for area of solar eclipses and all graphs of progressions measured quantities can be found an CD enclosed.
Policy analysis of perennial energy crops cultivation at the farm level: the case of short rotation coppice (SRC) in Germany
Creators: name: Spiegel, Alisa
name: Britz, Wolfgang
name: Djanibekov, Utkur
name: Finger, Robert
name: Spiegel, Alisa
name: Britz, Wolfgang
name: Djanibekov, Utkur
name: Finger, Robert
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Crop Production/Industries
subject: Farm Management
subject: Financial Economics
subject: Land Economics/Use
subject: Production Economics
subject: Resource /Energy Economics and Policy
subject: Risk and Uncertainty
subject: biomass
subject: policy regulation
subject: stochastic programming
subject: uncertainty

description: Perennial energy crops such as short rotation coppice (SRC) have gained interest among both farmers and policy makers. SRC is characterized by fast biomass production, low-input use and high managerial flexibility. In addition, SRC provides environmental benefits compared with competing crops and contributes to the transition process towards renewable energy sources. Yet, the combination of high irreversible costs and uncertainties hampers SRC adoption by farmers. Policy instruments that are currently implemented to foster SRC adoption in Germany show limited success. In this study, we therefore assess different policy measures to incentivize the adoption of SRC in terms of their efficiency and farm-level effect while taking into account uncertainties related to SRC cultivation. We use the combination of the stochastic programming and the real options approaches. Our case study focuses on poplar production in Germany. We analyse four policy measures to foster SRC cultivation, i.e. a planting subsidy, a price floor, a guaranteed price and increasing the “Ecological Focus Area” (EFA) weighting coefficient within the Common Agricultural Policy of the European Union. Our results show that the recently implemented planting subsidy could create incentives to adopt SRC by leading to a substantial increase in farm income. However, increasing the EFA coefficient and a price floor are more efficient in terms of governmental expenditures; while a guaranteed price triggers immediate introduction of SRC.
The pseudomorphic to bulk fcc phase transition of thin Ni films on Pd(100)
Creators: name: Rizzi, G. A.
name: Cossaro, A.
name: Petukhov, M.
name: Sedona, F.
name: Granozzi, G.
name: Bruno, F.
name: Cvetko, D.
name: Morgante, A.
name: Floreano, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have measured the transformation of pseudomorphic Ni films on Pd(100) into their bulk fcc phase as a function of the film thickness. We made use of x-ray diffraction and x-ray induced photoemission to study the evolution of the Ni film and its interface with the substrate. The growth of a pseudomorphic film with tetragonally strained face centered symmetry (fct) has been observed by out-of-plane x-ray diffraction up to a maximum thickness of 10 Ni layers (two of them intermixed with the substrate), where a new fcc bulk-like phase is formed. After the formation of the bulk-like Ni domains, we observed the pseudomorphic fct domains to disappear preserving the number of layers and their spacing. The phase transition thus proceeds via lateral growth of the bulk-like phase within the pseudomorphic one, i.e. the bulk-like fcc domains penetrate down to the substrate when formed. This large depth of the walls separating the domains of different phases is also indicated by the strong increase of the intermixing at the substrate-film interface, which starts at the onset of the transition and continues at even larger thickness. The bulk-like fcc phase is also slightly strained; its relaxation towards the orthomorphic lattice structure proceeds slowly with the film thickness, being not yet completed at the maximum thickness presently studied of 30 Angstrom (i.e. about 17 layers).
description: 8 pages, 7 figures
On the axial-vector form factor of the nucleon and chiral symmetry
Creators: name: Lutz, Matthias F. M.
name: Sauerwein, Ulrich
name: Timmermans, Rob G. E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the chiral Lagrangian with nucleon, isobar, and pion degrees of freedom. The baryon masses and the axial-vector form factor of the nucleon are derived at the one-loop level. We explore the impact of using on-shell baryon masses in the loop expressions. As compared to results from conventional chiral perturbation theory we find significant differences. An application to QCD lattice data is presented. We perform a global fit to the available lattice data sets for the baryon masses and the nucleon axial-vector form factor, and determine the low-energy constants relevant at N$^3$LO for the baryon masses and at N$^2$LO for the form factor. Partial finite-volume effects are considered. We point out that the use of on-shell masses in the loops results in non-analytic behavior of the baryon masses and the form factor as function of the pion mass, which becomes prominent for larger lattice volumes than presently used.
description: 39 pages, 9 figures
Reconciliation in the Israeli-Palestinian Conflict : A position paper
Creators: name: Abu-Nimer, Mohammed
name: Kahanoff, Maya
name: Levanon, Ofer Shinar
Publisher: name: American University
Year: 2023

description: Abu-Nimer, M., Kahanoff, M., & Levanon, O. S. (2014). Reconciliation in the Israeli-Palestinian Conflict: A position paper.
Fermions in Boundary Conformal Field Theory : Crossing Symmetry and $ε$-Expansion
Creators: name: Herzog, Christopher P.
name: Schaub, Vladimir
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use the equations of motion in combination with crossing symmetry to constrain the properties of interacting fermionic boundary conformal field theories. This combination is an efficient way of determining operator product expansion coefficients and anomalous dimensions at the first few orders of the $ε$ expansion. Two necessary ingredients for this procedure are knowledge of the boundary and bulk spinor conformal blocks. The bulk spinor conformal blocks are derived here for the first time. We then consider a number of examples. For $ϕ$ a scalar field and $ψ$ a fermionic field, we study the effects of a $ϕ\bar ψψ$ coupling in $4- ε$ dimensions, a $ϕ^2 \bar ψψ$ coupling in $3 -ε$ dimensions, and a $(\bar ψψ)^2$ coupling in $2+ε$ dimensions. We are able to compute some new anomalous dimensions for operators in these theories. Finally, we relate the anomalous dimension of a surface operator to the behavior of the charge density near the surface.
description: 36 pages + appendices. Comments welcome. v2 : Typo corrected and added references. v3: sign in appendix D corrected, ref added
Vliv epistemických komunit na mezinárodní jednání o problému kosmické tříště
Creators: name: Machon, Miloslav
Publisher: name: figshare
Year: 2020
Subjects: subject: 160607 International Relations
subject: FOS: Political science

description: Since the 1970's the debate about the rising importance of transnational relations has existed in international relations. Apart from states, the related research also focuses on other actors, including epistemic communities. The article uses the concept of epistemic communities and finds whether the activity of epistemic communities determines the process of the international management of outer space in the case of the political negotiations relating to space debris in UNCOPUOS and UNOOSA. The activity of epistemic communities exists in the political negotiations relating to space debris in UNCOPUOS and UNOOSA, but it has not been reflected in the related scholarly literature. Epistemic communities from the nongovernmental organizations IAF, COSPAR and IISL contributed to setting the space debris problem on the agenda of UNCOPUOS. Also, under the influence of epistemic communities from the governmental organization IADC, UNCOPUOS adopted guidelines preventing the creation of further amounts of space debris.
Optical Photometry and Spectroscopy of the SN 1998bw-like Type Ic Supernova 2002ap
Creators: name: Foley, Ryan J.
name: Papenkova, Marina S.
name: Swift, Brandon J.
name: Filippenko, Alexei V.
name: Li, Weidong
name: Mazzali, Paolo A.
name: Chornock, Ryan
name: Leonard, Douglas C.
name: Van Dyk, Schuyler D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present optical photometric and spectral data of the peculiar Type Ic SN 2002ap. Photometric coverage includes UBVRI bands from 2002 January 30, the day after discovery, through 2002 December 12. There are 5 early-time spectra and 8 in the nebular phase. We determine that SN 2002ap is similar to SN 1997ef and the GRB-associated SN 1998bw with respect to spectral and photometric characteristics. The nebular spectra of SN 2002ap present the largest Mg I] λ4571 to [O I] λλ6300, 6364 ratio of any supernova spectra yet published, suggesting that the progenitor of SN 2002ap was a highly stripped star. Comparing the nebular spectra of SN 1985F and SN 2002ap, we notice several similar features, casting the classification of SN 1985F as a normal Type Ib supernova in doubt. We also present nebular modeling of SN 2002ap and find that the object ejected >~ 1.5 M_{sun} of material within the outer velocity shell of the nebula (~5500 km/s) and synthesized ~0.09 M_{sun} of 56Ni.
description: 45 pages, accepted for publication in the October 2003 issue of PASP. Some references added
Rethinking classical liberalism in 'progressive' times (conference paper) : The divergent sociologies of Spencer and Sumner
Creators: name: Adcock, Robert
Publisher: name: American University
Year: 2023

description: Nineteenth-century liberal political thought was intimately interwoven with theories of transformative social change. Liberal institutions and ideals were championed as the optimal political order for “modern” or “advanced” societies.1 This mode of argument was premised on beliefs about the character of such societies and how they arise. When early nineteenth-century liberals such as Benjamin Constant articulated these beliefs they drew on the theory of the rise of “commercial society” associated with the Scottish Enlightenment.2 But that theory predated, and thus did not speak directly to, democratization and industrialization, the two dominant socially transformative trends of the new century. When Tocqueville updated liberalism by addressing these trends in the 1830s he interpreted them as potential threats tothe political order classical liberals advocated: a representative government limited to securing peace, property, and the rule of law, and thereby, a society in which the motor of progress is free competition and association. The dark edge of Tocqueville’s analysis was, however, mitigated by mid-century as liberals such as John Stuart Mill intellectually tamed industrialization and suffrage expansion by interpreting them as extensions of paths of economic and political progress charted in the rise of commerce. Classical liberalism’s limited government ideal was thereby rearticulated as being just as relevant and forward-looking a political theory as it had been early in the century.
On the relevance of subcritical hydrodynamic turbulence to accretion disk transport
Creators: name: Lesur, G.
name: Longaretti, P-Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Hydrodynamic unstratified keplerian flows are known to be linearly stable at all Reynolds numbers, but may nevertheless become turbulent through nonlinear mechanisms. However, in the last ten years, conflicting points of view have appeared on this issue. We have revisited the problem through numerical simulations in the shearing sheet limit. It turns out that the effect of the Coriolis force in stabilizing the flow depends on whether the flow is cyclonic (cooperating shear and rotation vorticities) or anticyclonic (competing shear and rotation vorticities); keplerian flows are anticyclonic. We have obtained the following results: i/ The Coriolis force does not quench turbulence in subcritical flows; ii/ The resolution demand, when moving away from the marginal stability boundary, is much more severe for anticyclonic flows than for cyclonic ones. Presently available computer resources do not allow numerical codes to reach the keplerian regime. iii/ The efficiency of turbulent transport is directly correlated to the Reynolds number of transition to turbulence $Rg$, in such a way that the Shakura-Sunyaev parameter $α\sim 1/Rg$. iv/ Even the most optimistic extrapolations of our numerical data show that subcritical turbulent transport would be too inefficient in keplerian flows by several orders of magnitude for astrophysical purposes. v/ Our results suggest that the data obtained for keplerian-like flows in a Taylor-Couette settings are largely affected by secondary flows, such as Ekman circulation.
description: 21 pages, 17 figures, accepted in Astronomy and Astrophysics
Acleris brigantiensis Nel & Varenne 2013
Creators: name: Huemer, Peter
name: Van Nieukerken, Erik J.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Acleris
Acleris brigantiensis

description: Acleris brigantiensis Nel & Varenne, 2013
 Acleris brigantiensis Nel & Varenne, 2013c: 19, figs. 7–8.
 Examined material. Holotype Ƌ: France, Hautes-Alpes,bord de la Clarée, Le Rosier, 1370 m, 7-IX-2012, J. Nel leg., genitalia slide JN n° 6674 (TLMF).
BOLD Specimen ID TLMF 28233; BOLD Sequence ID PALEA223-20.
BIN: [BOLD:AAB3524]
 Identity: Acleris emargana (Fabricius, 1775), synonymized by Nel (2014c).
 Remarks. Acleris brigantiensis was described from a single male and compared with the widespread A. emargana (Nel & Varenne 2013c). However, Nel (2014c) later considered alleged differences in male genitalia as artefacts and consequently synonymized both taxa. We obtained a short sequence of 305 bp of the holotype which matches A. emargana and so confirms the synonymy.
description: Published as part of Huemer, Peter & Van Nieukerken, Erik J., 2021, Identity of some recently described Lepidoptera from France-re-assessed with DNA barcodes and morphology, pp. 301-337 in Zootaxa 4941 (3) on page 313, DOI: 10.11646/zootaxa.4941.3.1, http://zenodo.org/record/4595123
Rethinking classical liberalism in 'progressive' times (conference paper) : The divergent sociologies of Spencer and Sumner
Creators: name: Adcock, Robert
Publisher: name: Annual Meeting of the American Political Science Association, Toronto
Year: 2023
Subjects: classificationCode: 38
subject: Economics

description: Nineteenth-century liberal political thought was intimately interwoven with theories of transformative social change. Liberal institutions and ideals were championed as the optimal political order for “modern” or “advanced” societies.1 This mode of argument was premised on beliefs about the character of such societies and how they arise. When early nineteenth-century liberals such as Benjamin Constant articulated these beliefs they drew on the theory of the rise of “commercial society” associated with the Scottish Enlightenment.2 But that theory predated, and thus did not speak directly to, democratization and industrialization, the two dominant socially transformative trends of the new century. When Tocqueville updated liberalism by addressing these trends in the 1830s he interpreted them as potential threats tothe political order classical liberals advocated: a representative government limited to securing peace, property, and the rule of law, and thereby, a society in which the motor of progress is free competition and association. The dark edge of Tocqueville’s analysis was, however, mitigated by mid-century as liberals such as John Stuart Mill intellectually tamed industrialization and suffrage expansion by interpreting them as extensions of paths of economic and political progress charted in the rise of commerce. Classical liberalism’s limited government ideal was thereby rearticulated as being just as relevant and forward-looking a political theory as it had been early in the century.
Composite Convolution: a Flexible Operator for Deep Learning on 3D Point Clouds
Creators: name: Floris, Alberto
name: Frittoli, Luca
name: Carrera, Diego
name: Boracchi, Giacomo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deep neural networks require specific layers to process point clouds, as the scattered and irregular location of 3D points prevents the use of conventional convolutional filters. We introduce the composite layer, a flexible and general alternative to the existing convolutional operators that process 3D point clouds. We design our composite layer to extract and compress the spatial information from the 3D coordinates of points and then combine this with the feature vectors. Compared to mainstream point-convolutional layers such as ConvPoint and KPConv, our composite layer guarantees greater flexibility in network design and provides an additional form of regularization. To demonstrate the generality of our composite layers, we define both a convolutional composite layer and an aggregate version that combines spatial information and features in a nonlinear manner, and we use these layers to implement CompositeNets. Our experiments on synthetic and real-world datasets show that, in both classification, segmentation, and anomaly detection, our CompositeNets outperform ConvPoint, which uses the same sequential architecture, and achieve similar results as KPConv, which has a deeper, residual architecture. Moreover, our CompositeNets achieve state-of-the-art performance in anomaly detection on point clouds. Our code is publicly available at \url{https://github.com/sirolf-otrebla/CompositeNet}.
description: Revised and accepted for publication on Pattern Recognition on 29 April 2024
Thermal Activation of Methane by MgO$^+$: Temperature Dependent Kinetics, Reactive Molecular Dynamics Simulations and Statistical Modeling
Creators: name: Sweeny, Brendan C.
name: Pan, Hanqing
name: Kassem, Asmaa
name: Sawyer, Jordan C
name: Ard, Shaun G.
name: Shuman, Nicholas S.
name: Viggiano, Albert A.
name: Brickel, Sebastian
name: Unke, Oliver T.
name: Upadhyay, Meenu
name: Meuwly, Markus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The kinetics of MgO$^+$ + CH$_4$ was studied experimentally using the variable ion source, temperature adjustable selected ion flow tube (VISTA-SIFT) apparatus from 300 $-$ 600 K and computationally by running and analyzing reactive atomistic simulations. Rates and product branching fractions were determined as a function of temperature. The reaction proceeded with a rate of $k = 5.9 \pm 1.5 10^{-10}(T/300 $ K$)^{-0.5 \pm 0.2}$ cm$^3$ s$^{-1}$. MgOH$^+$ was the dominant product at all temperatures, but Mg$^+$, the co-product of oxygen-atom transfer to form methanol, was observed with a product branching fraction of $0.08 \pm 0.03 (T / 300 $ K$)^{-0.8 \pm 0.7}$. Reactive molecular dynamics simulations using a reactive force field, as well as a neural network yield rate coefficients about one order of magnitude lower. This underestimation of the rates is traced back to the multireference character of the transition state [MgOCH$_4$]$^+$. Statistical modeling of the temperature-dependent kinetics provides further insight into the reactive potential surface. The rate limiting step was found to be consistent with a four-centered activation of the C-H bond, consistent with previous calculations. The product branching was modeled as a competition between dissociation of an insertion intermediate directly after the rate-limiting transition state, and traversing a transition state corresponding to a methyl migration leading to a Mg-CH$_3$OH$^+$ complex, though only if this transition state is stabilized significantly relative to the dissociated MgOH$^+$ + CH$_3$ product channel. An alternative non-statistical mechanism is discussed, whereby a post-transition state bifurcation in the potential surface could allow the reaction to proceed directly from the four-centered TS to the Mg-CH$_3$OH$^+$ complex thereby allowing a more robust competition between the product channels.
DIVERSITY OF MILK PRODUCTION DETERMINANTS IN EU MACRO-REGIONS* WITH A PREDOMINANCE OF INTENSIVE AND EXTENSIVE PRODUCTION IN 2011
Zróżnicowanie determinant produkcji mleka w makroregionach Unii Europejskiej z przewagą produkcji intensywnej i ekstensywnej w 2011 roku
Creators: name: Guth Marta
name: Guth Marta
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: Farm Management
subject: Land Economics/Use
subject: Production Economics
subject: Productivity Analysis
subject: milk production,
subject: EU macro-regions,
subject: production determinants,
subject: cluster analysis,
subject: factor analysis

description: The main objective of this paper is to identify the differentiation of factors determining the variability of milk production in the European Union macro-regions with a predominance of intensive and extensive production. Classification of regions is based on the analysis of the diversity of dairy farms FADN in the regions of the European Union, which was determined by the agglomeration cluster analysis using Ward method. In order to highlight the determinants of production factor analysis was performed. On the basis of the results, there were factors that have a decisive impact on milk production in dairy farms from regions with a predominance of intensive and extensive production model identified.
description: DOI: 10.17306/J.JARD.2017.00293
Emphasizing prevention in citizen security : The Inter-American Development Bank’s contribution to reducing violence in Latin America and the Caribbean
Creators: name: Alda, Erik
name: Buvinić, Mayra
name: Lamas, Jorge
Publisher: name: Inter-American Development Bank, Sustainable Development Department Best Practices Series
Year: 2023
Subjects: classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Description to be added
Momentum Imparted by Gravitational Waves
Creators: name: Sharif, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate momentum imparted by colliding gravitational waves in a closed Friedmann Robertson-Walker background and also by gravitational waves with toroidal wavefronts using an operational procedure. The results obtained for toroidal wavefronts are well behaved and reduce to the spherical wavefronts for a special choice.
description: 8 pages, no figure, Latex
Numerical Study of S=1/2 Heisenberg Antiferromagnet on the Floret Pentagonal Lattice
Creators: name: Furuchi, Rito
name: Nakano, Hiroki
name: Sakai, Toru
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The $S=1/2$ Heisenberg antiferromagnet on the floret-pentagonal lattice with two kinds of interaction strength is studied by the numerical-diagonalization method. It is known that, near the five-ninth of the saturation magnetization, this system shows a magnetization jump that is not accompanied by magnetization plateaux. We focus our attention on the behavior of this system around the five-ninth of the saturation magnetization; the changes of the magnetization jump and plateau at and around this magnetization are clarified from the diagonalization data for finite-size systems up to 45 sites.
description: 6 pages, 4 figures, to be published in JPS Conf. Proc
A locally anisotropic regularity criterion for the Navier--Stokes equation in terms of vorticity
Creators: name: Miller, Evan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35, 76

description: In this paper, we will prove a regularity criterion that guarantees solutions of the Navier--Stokes equation must remain smooth so long as the the vorticity restricted to a plane remains bounded in the scale critical space $L^4_t L^2_x$, where the plane may vary in space and time as long as the gradient of the vector orthogonal to the plane remains bounded. This extends previous work by Chae and Choe that guaranteed that solutions of the Navier--Stokes equation must remain smooth as long as the vorticity restricted to a fixed plane remains bounded in family of scale critical mixed Lebesgue spaces. This regularity criterion also can be seen as interpolating between Chae and Choe's regularity criterion in terms of two vorticity components and Beirão da Veiga and Berselli's regularity criterion in terms of the gradient of vorticity direction.
Ekonomicky zaměřené texty v časopise Mezinárodní vztahy jako odraz specifik českého výzkumu
Creators: name: Machon, Miloslav
name: Hnát, Pavel
name: Zemanová, Štěpánka
Publisher: name: figshare
Year: 2020
Subjects: subject: 160607 International Relations
subject: FOS: Political science

description: On the occasion of the 50 th anniversary of the academic journal Mezinárodní vztahy, the developments of International Relations as a scientific discipline in former Czechoslovakia and the Czech Republic that took place so far are subjected to critical reflection. In this context, the article analyzes research papers focused on international economic relations that were published in the periods 1966-1969 and 1992-2015, i.e., the key periods of the journal. It puts the papers into the context of International Political Economy and highlights the differences between the outcomes of the research in former Czechoslovakia and the Czech Republic, and the international trends and standards for such research. At the same time, the paper captures the initial coherence of the research with the political needs of the state, at first the socialist Czechoslovakia and later the Czech Republic in transition, and its gradual overcoming of this coherence. It also examines the institutional framework for the research. Due to the diversity of the set of texts in focus, the analysis leans on simple general criteria-the prevailing perspectives used for the analysis of the international economic relations, correspondence with the main branches of International Political Economy, qualitative vs. quantitative methodology and the basic typology of institutions involved in international relations research.