cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Andrade rheology in time-domain. Application to Enceladus' dissipation of energy due to forced libration
Creators: name: Gevorgyan, Yeva
name: Boué, Gwenaël
name: Ragazzo, Clodoaldo
name: Ruiz, Lucas S.
name: Correia, Alexandre C. M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The main purpose of this work is to present a time-domain implementation of the Andrade rheology, instead of the traditional expansion in terms of a Fourier series of the tidal potential. This approach can be used in any fully three dimensional numerical simulation of the dynamics of a system of many deformable bodies. In particular, it allows large eccentricities, large mutual inclinations, and it is not limited to quasi-periodic perturbations. It can take into account an extended class of perturbations, such as chaotic motions, transient events, and resonant librations. The results are presented by means of a concrete application: the analysis of the libration of Enceladus. This is done by means of both analytic formulas in the frequency domain and direct numerical simulations. We do not a priori assume that Enceladus has a triaxial shape, the eventual triaxiality is a consequence of the satellite motion and its rheology. As a result we obtain an analytic formula for the amplitude of libration that incorporates a new correction due to the rheology. Our results provide an estimation of the amplitude of libration of the core of Enceladus as 0.6% of that of the shell. They also reproduce the observed 10 GW of tidal heat generated by Enceladus with a value of $0.17\times 10^{14}$Pa$\cdot$s for the global effective viscosity under both Maxwell and Andrade rheology.
description: Preprint 'elsart' style, 22 pages, 9 multiple figures. Accepted for publication in Icarus
Christoph W. Clairmont, Die Bildnisse des Antinous. Ein Beitrag zur Porträtplastik unter Kaiser Hadrian
Creators: name: Bracker, J.
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Christoph W. Clairmont, Die Bildnisse des Antinous. Ein Beitrag zur Porträtplastik unter Kaiser Hadrian. Bibliotheca Helvetica Romana VI. Rom (Schweizerisches Institut) 1966. 62 Seiten, 38 Tafeln
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
The Electromagnetic Nature of Mass: Rethinking Fundamental Interactions
Creators: name: Skrynnik, Sergey
Publisher: name: Zenodo
Year: 2025
Subjects: mass
charge of elementary particles
wavelength
energy density

description: This article proposes the hypothesis that the mass and charge of elementary particles may be manifestations of electromagnetic processes. It examines the relationship between mass and wavelength, the possibility of interpreting charge as energy density, and the rethinking of gravity and quantum entanglement through electromagnetic interactions. This perspective could lead to a revision of fundamental physical laws and new technological applications.

 

В данной статье предлагается гипотеза о том, что масса и заряд элементарных частиц могут быть проявлением электромагнитных процессов. Рассматривается связь массы с длиной волны, возможность интерпретации заряда как плотности энергии, а также переосмысление гравитации и квантовой запутанности через электромагнитное взаимодействие. Предложенный взгляд может привести к пересмотру фундаментальных законов физики и новым технологическим применениям.
Hans Georg Niemeyer, Studien zur statuarischen Darstellung der römischen Kaiser
Creators: name: Fittschen, Klaus
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Hans Georg Niemeyer, Studien zur statuarischen Darstellung der römischen Kaiser. Monumenta Artis Romanae VII. Gebr. Mann, Berlin 1968. 116 Seiten, 48 Tafeln
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
Tonio Holscher, Victoria Romana. Archäologische Untersuchung zur Geschichte und Wesensart der römischen Siegesgöttin von den Anfängen bis zum Ende des 3. Jhs. n. Chr.
Creators: name: Koeppel, G.
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Tonio Holscher, Victoria Romana. Archäologische Untersuchung zur Geschichte und Wesensart der römischen Siegesgöttin von den Anfängen bis zum Ende des 3. Jhs. n. Chr. Verlag Ph. von Zabern, Mainz 1967. 195 Seiten, 16 Tafeln
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
QCD factorization for B->PP and B->PV decays
Creators: name: Beneke, Martin
name: Neubert, Matthias
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A comprehensive study of exclusive hadronic B-meson decays into final states containing two pseudoscalar mesons (PP) or a pseudoscalar and a vector meson (PV) is presented. The decay amplitudes are calculated at leading power in Lambda_{QCD}/m_b and at next-to-leading order in alpha_s using the QCD factorization approach. The calculation of the relevant hard-scattering kernels is completed. Important classes of power corrections, including ``chirally-enhanced'' terms and weak annihilation contributions, are estimated and included in the phenomenological analysis. Predictions are presented for the branching ratios of the complete set of the 96 decays of B^-, B^0, and B_s mesons into PP and PV final states, and for most of the corresponding CP asymmetries. Several decays and observables of particular phenomenological interest are discussed in detail, including the magnitudes of the penguin amplitudes in PP and PV final states, an analysis of the pi-rho system, and the time-dependent CP asymmetry in the K phi and K eta' final states.
description: 92 pages, 13 figures, 28 tables; typos and errors in data tables corrected; version to appear in Nuclear Physics B
A solvable model of the breakdown of the adiabatic approximation
Creators: name: Galtbayar, Artbazar
name: Jensen, Arne
name: Yajima, Kenji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Let $L\geq0$ and $0L$. The initial value problem is explicitly solvable in terms of Bessel functions. Using the explicit solutions we show that the adiabatic theorem breaks down as $\varepsilon\to 0$. For the case $L=0$ complete results are obtained. The survival probability of the ground state $π^{-1/4}\exp(-x^2/2)$ at microscopic time $t=1/\varepsilon$ is $1/\sqrt{2}+O(\varepsilon)$. For $L>0$ the framework for further computations and preliminary results are given.
description: 18 pages, revised version
Claude Poinssot, Les ruines de Dougga / Arthur Golfetto, Dougga. Die Geschichte einer Stadt im Schatten Karthagos / Maria Floriani Squarciapino, Leptis Magna
Creators: name: Christern, J.
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Claude Poinssot, Les ruines de Dougga. Sécrétariat d’état à l’éducation nationale, institut national d’árcheologie et arts. Tunis 1958. 82 Seiten, 7 Abbildungen, 21 Tafeln, 1 Plan Arthur Golfetto, Dougga. Die Geschichte einer Stadt im Schatten Karthagos. Raggi-Verlag Basel 1961. 67 Seiten, 54 Abbildungen, 1 Farbtafel. (= Ruinenstadte Nordafrikas Bd. 1.) Maria Floriani Squarciapino, Leptis Magna. Raggi-Verlag Basel 1966. 138 Seiten, 22 Abbildungen, 1 Plan, 100 Abb. ( = Ruinenstadte Nordafrikas Bd. 2.)
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
A Recursive Model of the Hog Industry
Creators: name: Harlow, Arthur A.
name: Harlow, Arthur A.
Publisher: name: Unknown
Year: 1962
Subjects: Financial Economics
Livestock Production/Industries

description: There are a number of estimation methods available to the econometrician. They range in complexity from least squares, which takes only a few minutes with pencil and paper for a simple problem, to full information maximum likelihood, which requires a large-capacity electronic computer for effective application. A list of the common methods, given in order of increasing complexity, includes least squares, two-stage least squares, instrumental variables, limited information, and full information. Recursive systems are fitted by least squares which makes estimation relatively simple, and they have other desirable statistical properties. Following a brief discusssion of the special characteristics of recursive systems, this paper presents an application of the recursive method to an analysis of the hog industry. The author is indebted to Anthony S. Rojko and Hyman Weingarten of the Economic Research Service for their helpful suggestions during the preparation of this paper.
Leslie P. Wenham, The Romano-British Cemetery at Trentholme Drive, York
Creators: name: Rüger, C. B.
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Leslie P. Wenham, The Romano-British Cemetery at Trentholme Drive, York, With Contributions by E. Birley, J. P. Gillam, D. B. Harden, J. P. C. Kent, G. Simpson, W. V. Wade, with a Report on the Skeletal Remains by Roger Warwick and A Dental Report by Colin Cooke and Charles T. Rowbotham. Ministry of Public Building and Works Archaeological Reports No. 5. London 1968. 223 Seiten Text, 47 Textabbildungen, 53 Tafeln
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
Pauridia undetermined
Creators: name: Snijman, Deirdre A.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Hypoxidaceae
Pauridia
Pauridia undetermined

description: Pauridia sp.
 SOUTH AFRICA. Northern Cape: Groot Pellaberg, southern slopes (QDS: 2919 AA), 3 May 1988, E.J. van Jaarsveld 9805 (NBG!).
 One small collection by Ernst van Jaarsveld from the Groot Pellaberg, Northern Cape of two partial leaves and inflorescences, probably from a single plant, seems to represent an undescribed species allied to Pauridia scullyi. Like P. scullyi the leaves are thin-textured and the inflorescences have two or three yellow flowers. The filaments, however, are longer than the anthers and the style is about as long as the stigma branches, unlike P. scullyi in which the filaments are shorter than the anthers and the style is at most one third the length of the stigma branches. The plants also appear to flower in May, two months in advance of the spring-flowering P. scullyi. Although the only known seeds are immature, these appear to be covered by blunt, peg-like tubercles that give the testa a spikey appearance. The plants are recorded as common on the upper southern slopes of Groot Pellaberg in Bushmanland, but to date only this single collection is known. Additional material is still needed to adequately assess whether the plant warrants formal description.
description: Published as part of Snijman, Deirdre A., 2014, A taxonomic revision of the genus Pauridia (Hypoxidaceae) in southern Africa, pp. 1-114 in Phytotaxa 182 (1) on page 109, DOI: 10.11646/phytotaxa.182.1.1, http://zenodo.org/record/8307173
Sheppard Frere, Britannia. A History of Roman Britain
Creators: name: Petrikovits, Harald Von
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Sheppard Frere, Britannia. A History of Roman Britain. History of the Provinces of the Roman Empire. Band 1. Routledge and Kegan Paul, London 1967. XVI + 432 Seiten, 13 Textbilder, 32 Tafeln
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
Study of $\bar{B}_{u,d,s}^* \to D_{u,d,s}^* V\,(V=D_{d,s}^{*-}\,,K^{*-}\,,ρ^-)$ weak decays
Creators: name: Chang, Qin
name: Zhang, Yunyun
name: Li, Xiaonan
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the rapid development of heavy flavor physics experiment, we study the tree-dominated nonleptonic $\bar{B}_{u,d,s}^* \to D_{u,d,s}^*V$~($V=D^{*-},D_s^{*-},K^{*-},ρ^-$) decays within the factorization approach. The relevant transition form factors are calculated by employing the covariant light-front quark model. The helicity amplitudes are calculated and analyzed in detail, and a very clear hierarchy structure $ |H_{-0}| \approx 2|H_{00}| > |H_{0-}|\approx|H_{--}|>|H_{0+}|\approx|H_{++}|$ is presented. The branching fractions are computed and discussed. Numerically, the CKM-favored $\bar{B}^*_q\to D^*_q ρ^{-}$ and $D^*_q D_s^{*-}$ decays have relatively large branching fractions, $\gtrsim {\cal O}(10^{-8})$, and are hopeful to be observed by LHC and Belle-II experiments in the future.
description: 19pages
Normative Supply Functions by Linear Programming Procedures
Creators: name: Krenz, Ronald D.
name: Baumann, Ross V.
name: Heady, Earl O.
name: Krenz, Ronald D.
name: Baumann, Ross V.
name: Heady, Earl O.
Publisher: name: Unknown
Year: 1962
Subjects: Agricultural and Food Policy
Research Methods/ Statistical Methods

description: In many analyses of profit maximization, attention is directed to large herds and specialization in milk production. Why then do some farmers persist in keeping small dairy herds even when prices for Grade B milk become quite low? This article shows that even with relatively low prices for milk the inclusion of the small dairy herd in the combination of enterprises may still provide the maximum profit from the resources available on the farm. At higher levels of milk prices, it becomes profitable to increase the number of cows and the consequent quantity of milk produced. The various levels of prices and corresponding production of milk constitute a supply function for the farm. This paper illustrates the supply function by utilizing the resources found on a typical 160-acre farm in northeastern Iowa with the full-time labor of two men and $10,250 in capital available. With the aid of varilt ble-price programming, optimum combinations of nterprises for maximizing profits were computed, starting with milk prices so low (92 cents per hundredweight for grade B milk) that no milk cows would be included in the organization. With the price of milk increased to $1.01, a 13-cow herd would maximize profits while the small poultry enterprise would be dropped. With the price of milk at $2.38, a 24-cow herd would be the most profitable and the fall pig enterprise would be dropped. Thus at each level of milk prices, the farmer would have an optimum organization of cows, hogs, and poultry for profit maximization. This is Journal Paper No. J-3443 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project No. 1277.
Danse-doigts, a Fine Motor Game
Creators: name: Susini, Jean-Ferdy
name: Pons, Olivier
name: Guedin, Nolwenn
name: Thevenot, Catherine
Publisher: name: arXiv
Year: 2019
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This paper describes the design, implementation and testing of "Danse-doigts", an edutainment therapeutic application for hemiplegic children. The objective of this program is twofold. Firstly, to allow them to train their fine motor skills on tablet. Secondly, to study the effect of this training on their numerical performance (counting, calculation...). The target population and the objective of evaluating numerical skills influenced the design. The software was developed using standard web technologies but is based on a new parallel programming library written in JavaScript. Applications and libraries are free of charge and easy to install on most tablets.
Lease-Financing and Returns to Capital of Food Marketing Firms
Creators: name: Hiemstra, Stephen J.
name: Hiemstra, Stephen J.
Publisher: name: Unknown
Year: 1962
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: The changing structure of the food marketing system focuses attention on competitive relationships existing in food industries. Conventional measures of profits, such as profit rates on stockholders' equity and on total assets, often are used to appraise the performance of these industries. This article points out some of the shortcomings of these profit ratios, giving special emphasis to the impact of leasefinancing. Many retail chains use leases to finance their long-term capital needs, but few food processors do. When a firm finances its capital by leasing rather than by ownership or mortgage, the firm's net profit and its stockholders' equity each represent a larger percentage of total assets. As leased assets do not appear on the balance sheet, they represent implicit leverage. The following estimates present value of leased assets for a group of large food processing and retailing firms by capitalizing rental obligations. Total assets plus leased assets give total capital supplied by owners, creditors, and lessors. Gross returns to this capital are nearly equivalent for processors and retailers in spite of inequalities in conventional profit ratios. Some implications of this finding are considered.
Alfred Neumann, Forschungen in Vindobona 1948-1967. Teil I: Lager und Lagerterritorium
Creators: name: Rüger, C. B.
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Alfred Neumann, Forschungen in Vindobona 1948-1967. Teil I: Lager und Lagerterritorium. Der Romische Limes in Österreich, Heft 23. Hermann Böhlau Nachf., Wien 1967. 75 Seiten Text, 23 Abbildungen, 49 Tafeln, 2 Planbeilagen
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
The kinematics of the bi-lobal supernova remnant G 65.3+5.7 - Paper II
Creators: name: Boumis, P.
name: Meaburn, J.
name: Lopez, J. A.
name: Mavromatakis, F.
name: Redman, M. P.
name: Harman, D. J.
name: Goudis, C. D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Further deep, narrow-band images in the light of [O III] 5007 A have been added to the previous mosaic of the faint galactic supernova remnant G 65.3+5.7. Additionally longslit spatially resolved [O III] 5007 A line profiles have been obtained at sample positions using the Manchester Echelle Spectrometer at the San Pedro Martir observatory. The remnant is shown to be predominantly bi-lobal with an EW axis for this structure. However, a faint additional northern lobe has now been revealed. Splitting of the profiles along the slit lengths, when extrapolated to the remnant's centre, although uncertain suggests that the expansion velocity of this remnant is between 124 and 187 km/s ie much lower than the 400 km/s previously predicted for the forward shock velocity from the X-ray emission. An expansion proper motion measurement of 2.1+-0.4 arcsec in 48 years for the remnant's filamentary edge in the light of Halpha+[N II] has also been made. When combined with an expansion velocity of ~155 km/s, a distance of ~800 pc to G 65.3+5.7 is derived. Several possibilities are considered for the large difference in the expansion velocity measured here and the 400 km/s shock velocity required to generate the X-ray emission. It is also suggested that the morphology of the remnant may be created by a tilt in the galactic magnetic field in this vicinity.
description: 10 pages, 5 figures, accepted for publication in A&A
Dynamical properties of Néel and valence-bond phases in the $J_1-J_2$ model on the honeycomb lattice
Creators: name: Ferrari, Francesco
name: Becca, Federico
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By using a variational Monte Carlo technique based upon Gutzwiller-projected fermionic states, we investigate the dynamical structure factor of the antiferromagnetic $S=1/2$ Heisenberg model on the honeycomb lattice, in presence of first-neighbor ($J_1$) and second-neighbor ($J_2$) couplings, for ${J_2 < 0.5 J_1}$. The ground state of the system shows long-range antiferromagnetic order for ${J_2/J_1 \lesssim 0.23}$, plaquette valence-bond order for ${0.23 \lesssim J_2/J_1 \lesssim 0.36}$, and columnar dimer order for ${J_2/J_1 \gtrsim 0.36}$. Within the antiferromagnetic state, a well-defined magnon mode is observed, whose dispersion is in relatively good agreement with linear spin-wave approximation for $J_2=0$. When a nonzero second-neighbor super-exchange is included, a roton-like mode develops around the $K$ point (i.e., the corner of the Brillouin zone). This mode softens when $J_2/J_1$ is increased and becomes gapless at the transition point, $J_2/J_1 \approx 0.23$. Here, a broad continuum of states is clearly visible in the dynamical spectrum, suggesting that nearly-deconfined spinon excitations could exist, at least at relatively high energies. For larger values of $J_2/J_1$, valence-bond order is detected and the spectrum of the system becomes clearly gapped, with a triplon mode at low energies. This is particularly evident for the spectrum of the dimer valence-bond phase, in which the triplon mode is rather well separated from the continuum of excitations that appears at higher energies.
MOESM2 of Qualitative evaluation of a community health representative program on patient experiences in Navajo Nation
Creators: name: Lalla, Amber
name: Shine Salt
name: Schrier, Elizabeth
name: Brown, Christian
name: Curley, Cameron
name: Muskett, Olivia
name: Mae-Gilene Begay
name: Shirley, Lenora
name: Clarina Clark
name: Singer, Judy
name: Shin, Sonya
name: Nelson, Adrianne
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 2. Example of Interview Debrief Form
Mass bounds in a model with a Triplet Higgs
Creators: name: Forshaw, J. R.
name: Vera, A. Sabio
name: White, B. E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform an analysis of the Renormalization Group evolution of the couplings in an extension to the Standard Model which contains a real triplet in the Higgs sector. Insisting that the model remain valid up to 1 TeV allow us to map out the region of allowed mass for the Higgs bosons. We conclude that it is possible for there to be no light Higgs bosons without any otherwise dramatic deviation from the physics of the Standard Model.
description: A study of the decoupling limit added. Published in JHEP06(2003)059
Günter Ulbert, Das frührömische Kastell Rheingönheim. Die Funde aus den Jahren 1912 und 1913
Creators: name: Baatz, Dietwulf
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Günter Ulbert, Das frührömische Kastell Rheingönheim. Die Funde aus den Jahren 1912 und 1913. Limesforschung Bd. 9. Gebr. Mann, Berlin 1969. 62 Seiten mit 6 Abbildungen, 63 Tafeln und zwei Kartenbeilagen
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
Far UV Spectra of Fast Coronal Mass Ejections Associated with X-class Flares
Creators: name: Raymond, J. C.
name: Ciaravella, A.
name: Dobrzycka, D.
name: Strachan, L.
name: Ko, Y. -K.
name: Uzzo, M.
name: Raouafi, N. -E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Ultraviolet Coronagraph Spectrometer (UVCS) aboard the {\it SOHO} satellite has observed very fast Coronal Mass Ejections (CMEs) associated with X-class flares. These events show spectral signatures different than those seen in most other CMEs in terms of very rapid disruption of the pre-CME streamer, very high Doppler shifts and high temperature plasma visible in the [Fe XVIII] emission line. This paper describes three very similar events on 21 April, 23 July and 24 August 2002 associated with X-class flares. We determine the physical parameters of the pre-CME streamers and discuss the geometrical and physical nature of the streamer blowouts. In the 21 April event, the hot plasma seen as [Fe XVIII] is not related to the structure seen in [Fe XXI] by SUMER at lower heights. It has the form of a rapidly expanding fan, quite likely a current sheet. In the August event, on the other hand, the [Fe XVIII] is probably a bubble of hot plasma formed by reconnection in the wake of the CME. C III emission from the July 23 flare is detected as stray light in the UVCS aperture. It precedes the hard X-ray brightening by about 2 minutes.
description: 14 pages plus 7 figures. ApJ, in press
Helga von Heintze, Römische Kunst
Creators: name: Künzl, Ernst
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Helga von Heintze, Römische Kunst. Chr. Belser-Verlag, Stuttgart 1969. — 199 Seiten mit 192 Abbildungen, Bibliographie und Register. — Belser Stilgeschichte Band III
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
Oskar Ziegenaus - Gioia de Luca, Das Asklepieion, 1. Teil: Der südliche Temenosbezirk in hellenistischer und frührömischer Zeit
Creators: name: Pinkwart, Doris
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Oskar Ziegenaus - Gioia de Luca, Das Asklepieion, 1. Teil: Der südliche Temenosbezirk in hellenistischer und frührömischer Zeit. Mit Beiträgen von Virginia Grace und Christoph Boehringer. (= Deutsches Archäologisches Institut. Altertümer von Pergamon, hrsg. v. Erich Boehringer, Bd. XI 1.) Walter de Gruyter & Co., Berlin 1968. XII und 188 Seiten und 88 Tafeln
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
Cosmic recombination history in light of EDGES measurements of the cosmic dawn 21-cm signal
Creators: name: Datta, Kanan K.
name: Kundu, Aritra
name: Paul, Ankit
name: Bera, Ankita
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The recent EDGES measurements of the global 21-cm signal from the cosmic dawn suggest that the kinetic temperature of the inter-galactic medium (IGM) might be significantly lower compared to its expected value. The colder IGM directly affects the hydrogen recombination of the universe during the cosmic dawn and dark ages by enhancing the rate of recombinations. Here, we study and quantify, the impact of the colder IGM scenario on the recombination history of the universe in the context of DM-baryonic interaction model which is widely used to explain the depth of the EDGES 21-cm signal. We find that, in general, the hydrogen ionisation fraction gets suppressed during the dark ages and cosmic dawn and the suppression gradually increases at lower redshifts until X-ray heating turns on. However, accurate estimation of the ionisation fraction requires knowledge of the entire thermal history of the IGM, from the epoch of thermal decoupling of hydrogen gas and the CMBR to the cosmic dawn. It is possible that two separate scenarios which predict very similar HI differential temperature during the cosmic dawn and are consistent with the EDGES 21-cm signal might have very different IGM temperature during the dark ages. The evolutions of the ionisation fraction in these two scenarios are quite different. This prohibits us to accurately calculate the ionisation fraction during the cosmic dawn using the EDGES 21-cm signal alone. We find that the changes in the ionisation fraction w.r.t the standard scenario at redshift $z \sim 17 $ could be anything between $\sim 0 \%$ to $\sim 36 \%$. This uncertainty may be reduced if measurements of HI 21-cm differential temperature at multiple redshifts are simultaneously used.
description: 10 pages, 8 figures. The revised version now includes X-ray heating. Revised version accepted for publication in Phys. Rev. D
Further remarks on electroweak moments of baryons and manifestations of broken SU(3)
Creators: name: Gerasimov, S. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The role of nonvalence, {\it e.g.} sea quarks and/or meson degrees of freedom in static and quasistatic baryon electroweak observables, is discussed within the phenomenological sum rule approach. The inclusion of nonvalence degrees of freedom in the analysis of baryon magnetic moments explains extremely strong violation of the standard SU(6) symmetry-based quark-model prediction for the magnetic moment ratio $R_{Σ/Λ}=(Σ^{+} + 2Σ^{-})/(-Λ) \simeq .23$, while the value $R_{Σ/Λ}(SU(6))= 1$ corresponds to the nonrelativistic quark model. We also obtain $F/D=.72$ for the quark-current-baryon coupling $SU(3)_{f}$ ratio. The implications for the "strangeness" magnetism of the nucleon and for weak axial-to-vector coupling constant relations measured in the lowest octet baryon $β$-decays are discussed. The latter shows up the possible role of the induced second-class form factor (the "weak- electricity", or pseudotensor form factor) in the extraction of the $(g_1/f_1)$-values from the hyperon's $β$-decay data.
description: 6 pages, LaTex, no figures; Talk at the Xth Advanced Research Workshop on High Energy Spin Physics (Dubna-SPIN-03), Sept. 16-20, 2003, Dubna, Russia; to appear in the Proceedings
Dependence of Mass on Wavelength in the Relativistic Limit
Creators: name: Skrynnik, Sergey
Publisher: name: Zenodo
Year: 2025
Subjects: mass
Relativistic Limit

description: This article explores the relationship between the mass of an elementary particle and its wavelength in the relativistic limit. It is shown that at high energies, mass approaches zero, and the wavelength fully determines the particle's dynamic mass. This conclusion aligns with the hypothesis that electromagnetic waves play a fundamental role in the structure of matter.

 

В данной статье рассматривается связь массы элементарной частицы с её длиной волны в релятивистском пределе. Показано, что при высоких энергиях масса стремится к нулю, а длина волны полностью определяет динамическую массу частицы. Данный вывод согласуется с гипотезой о фундаментальной роли электромагнитных волн в строении материи.
Yves Fremault, Nederzettingssporen uit de Ijzertijd in het Antwerpse
Creators: name: Joachim, Hans-Eckart
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Yves Fremault, Nederzettingssporen uit de Ijzertijd in het Antwerpse. Oudheidkundige Repertoria IV, Reeks B. Brussel 1969. 106 Seiten mit Tafeln, 1 Plan
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
The Origin of X-shaped Radio Galaxies: Clues from the Z-symmetric Secondary Lobes
Creators: name: Gopal-Krishna
name: Biermann, Peter L.
name: Wiita, Paul J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Existing radio images of a few X-shaped radio galaxies reveal Z-symmetric morphologies in their weaker secondary lobes which cannot be naturally explained by either the galactic merger or radio-lobe backflow scenarios, the two dominant models for these X-shaped radio sources. We show that the merger picture can explain these morphologies provided one takes into account that, prior to the coalescence of their supermassive black holes, the smaller galaxy releases significant amounts of gas into the ISM of the dominant active galaxy. This rotating gas, whose angular momentum axis will typically not be aligned with the original jets, is likely to provide sufficient ram pressure at a distance ~10 kpc from the nucleus to bend the extant jets emerging from the central engine, thus producing a Z-symmetry in the pair of radio lobes. Once the two black holes have coalesced some 10^7 yr later, a rapid reorientation of the jets along a direction close to that of the orbital angular momentum of the swallowed galaxy relative to the primary galaxy would create the younger primary lobes of the X-shaped radio galaxy. This picture naturally explains why such sources typically have powers close to the FR I/II break. We suggest that purely Z-symmetric radio sources are often en route to coalescence and the concomitant emission of substantial gravitational radiation, while X-shaped ones have already merged and radiated.
description: 12 pages, 1 compressed figure; accepted for publication in ApJ Letters
Reinhard Schindler, Studien zum vorgeschichtlichen Siedlungs- und Befestigungswesen des Saarlandes
Creators: name: Joachim, Hans-Eckart
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Reinhard Schindler, Studien zum vorgeschichtlichen Siedlungs- und Befestigungswesen des Saarlandes. Paulinus Verlag, Trier 1968. 204 Seiten, 148 Textund Tafelabbildungen, 15 Kartenbeilagen
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
MOESM1 of Qualitative evaluation of a community health representative program on patient experiences in Navajo Nation
Creators: name: Lalla, Amber
name: Shine Salt
name: Schrier, Elizabeth
name: Brown, Christian
name: Curley, Cameron
name: Muskett, Olivia
name: Mae-Gilene Begay
name: Shirley, Lenora
name: Clarina Clark
name: Singer, Judy
name: Shin, Sonya
name: Nelson, Adrianne
Publisher: name: figshare
Year: 2020
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 1. Qualitative Interview Questions
Local moderate and precise large deviations via cluster expansions
Creators: name: Scola, Giuseppe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60F05, 60F10, 82B05

description: We consider a system of classical particles confined in a box $Λ\subset\mathbb{R}^d$ with zero boundary conditions interacting via a stable and regular pair potential. Based on the validity of the cluster expansion for the canonical partition function in the high temperature - low density regime we prove moderate and precise large deviations from the mean value of the number of particles with respect to the grand-canonical Gibbs measure. In this way we have a direct method of computing both the exponential rate as well as the pre-factor and obtain explicit error terms. Estimates comparing with the infinite volume versions of the above are also provided.
description: 26 pages
Unser Porz. Beitrage zur Geschichte von Amt und Stadt Porz
Creators: name: Joachim, Hans-Eckart
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Unser Porz. Beitrage zur Geschichte von Amt und Stadt Porz, Heft 8. Porz 1966. 104 Seiten, zahlreiche Abbildungen, 1 Plan
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
On the Response of Martian Ionosphere to the Passage of a Corotating Interaction Region: MAVEN Observations
Creators: name: Krishnaprasad, C.
name: Thampi, Smitha V.
name: Bhardwaj, Anil
Publisher: name: arXiv
Year: 2019
Subjects: subject: Space Physics (physics.space-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The response of Martian ionosphere to the passage of Corotating Interaction Region (CIR) of June 2015 is studied using observations from several instruments aboard the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission. An intense CIR arrived at Mars on 22 June 2015, during which the upstream solar wind and interplanetary conditions were monitored by the Solar Wind Ion Analyzer (SWIA), Solar Wind Electron Analyzer (SWEA), Magnetometer (MAG), and Solar Energetic Particle (SEP) instruments aboard MAVEN. The CIR event was characterized by enhancements in solar wind density, velocity, and dynamic pressure, and increased & fluctuating interplanetary magnetic field, and was associated with enhanced fluxes of solar energetic particles. The Langmuir Probe and Waves (LPW) instrument onboard MAVEN provided the ionospheric observations such as electron density and electron temperature during this period. The dayside ionosphere is significantly compressed only near the peak of solar wind dynamic pressure enhancement (~14 nPa). In contrast, on the nightside, the electron density remains depleted for a longer period of time. The electron temperatures are also enhanced during the period of electron depletion on the nightside. The STATIC (Suprathermal and Thermal Ion Composition) measurements show enhanced fluxes of suprathermal heavy ions in the Martian exosphere during CIR period, and evidences for enhanced tailward flow of these pickup ions. The analysis suggests that the nightside ionosphere is primarily controlled by the precipitating solar energetic particles and pickup ions transported across the Martian terminator, and depletes significantly when the heavy ion flux in the exosphere enhances.
Multivariate random-effects meta-analysis
Creators: name: White, Ian R.
name: White, Ian R.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Research Methods/ Statistical Methods
subject: mvmeta
subject: mvmeta_make
subject: mvmeta_l
subject: meta-analysis
subject: multivariate meta-analysis
subject: individual participant data
subject: observational studies

description: Multivariate meta-analysis combines estimates of several related parameters over several studies. These parameters can, for example, refer to multiple outcomes or comparisons between more than two groups. A new Stata command, mvmeta, performs maximum likelihood, restricted maximum likelihood, or method-of-moments estimation of random-effects multivariate meta-analysis models. A utility command, mvmeta_make, facilitates the preparation of summary datasets from more detailed data. The commands are illustrated with data from the Fibrinogen Studies Collaboration, a meta-analysis of observational studies; I estimate the shape of the association between a quantitative exposure and disease events by grouping the quantitative exposure into several categories.
Contribution to the study of the electric transport in cuprate superconducting thin films: supercritical currents and paraconductivity
Creators: name: Viña, Jose
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In type-II superconductors, in the regime of very high applied current density, an abrupt transition is experimentally observed from the mixed state to a highly dissipative regime, probably the normal state. This provokes a high voltage jump in the Current-Voltage Characteristics (CVC) of the samples, at a current density J* larger than the critical current Jc. In this work we study Y-123 (YBCO) microbridges sputtered over SrTiO3 substrates. We measure their CVCs for different temperatures close to Tc, and with low applied magnetic field, from 0 to 1 T. We compare the dependences of Jc and J*, and find that some of the typical experimental results in this regime could be explained by only considering the effect of the current self-field. This suggests that the depairing of the supercarriers could be involved in the abrupt transition. We also study the influence of thermal effects, by using a simplified model to describe the thermal evolution of our samples. We find that the uniform self-heating can produce an abrupt thermal runaway, at high current density, which could explain the occurrence of J*, as well as its dependence on temperature and applied magnetic field. These results do not totally exclude the implication of other more intrinsic mechanisms (like Cooper pairs depairing, or a change in the regime of the vortex dynamics), but suggest that the uniform self-heating is more relevant than what was considered up to now. In a shorter second part of the thesis, the contribution of the author to the study of the paraconductivity in his laboratory is reflected.
description: Ph.D. thesis. 302 pages, 121 EPS figures. In Spanish, with summary and outline in English
Willi Wegewitz, Der Urnenfriedhof von Hamburg-Langenbeck
Creators: name: Hinz, Hermann
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Willi Wegewitz, Der Urnenfriedhof von Hamburg-Langenbeck. Die Urnenfriedhöfe in Niedersachsen, Bd. 8. August Lax, Hildesheim 1965. 50 Seiten, 5 Abbildungen, 40 Tafeln
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
Market participation and sale of potatoes by smallholder farmers in the central highlands of Angola: A Double Hurdle approach
Creators: name: Reyes, Byron
name: Donovan, Cynthia
name: Bernsten, Richard H.
name: Maredia, Mywish K.
name: Reyes, Byron
name: Donovan, Cynthia
name: Bernsten, Richard H.
name: Maredia, Mywish K.
Publisher: name: Unknown
Year: 2012
Subjects: Crop Production/Industries

description: This paper uses a double hurdle regression analysis to estimate the factors influencing marketing decisions among potato growers in the central highlands of Angola, focusing on gender of household head, productive asset ownership and transaction costs. Although the results suggest that the quantity produced is exogenous in the models for market participation and for quantity sold, the methodology used provides a framework for others to follow when endogeneity is suspected in one or more variables. The wealth analysis suggests that potato growers, potato sellers and male heads were richer than their counterparts. The linear regression results on quantity produced suggest that female-headed households produced less than their male counterparts, owning productive assets or having access to public assets had no statistical effect on production, and that farmers who used fertilizer produced more than farmers who didn’t apply fertilizer to their fields. The double hurdle regression results suggest that (1) male-headed households were more likely to sell potatoes, (2) owning productive assets and having access to government extension services, conditional on market participation, positively affected the quantity sold, (3) transaction costs, conditional on market participation, negatively affected the quantity sold, and (4) quantity produced was a marginally significant positive factor on both the likelihood of selling potatoes and the quantity sold. In contrast, the unconditional average partial effects suggest that, (1) potato sales were gender neutral, (2) owning productive assets had no statistical effect on quantity sold, (3) transaction costs negatively affected the quantity sold, and (4) having access to extension services and the quantity produced both positively affected the quantity sold. Thus, to boost sales, investments may be needed to promote farmer participation in organizations and/or establish farmer organizations in villages without them, increase farmers’ access to extension services, invest in infrastructure, and help farmers increase their production.
The structure and radiation spectra of illuminated accretion disks in AGN. II. Flare/spot model of X-ray variability
Creators: name: Czerny, B.
name: Rozanska, A.
name: Dovciak, M.
name: Karas, V.
name: Dumont, A. -M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss a model of X-ray variability of active galactic nuclei (AGN). We consider multiple spots which originate on the surface of an accretion disk following intense irradiation by coronal flares. The spots move with the disk around the central black hole and eventually decay while new spots continuously emerge. We construct time sequences of the spectra of the spotted disk and compute the corresponding energy-dependent fractional variability amplitude. We explore the dependence on the disk inclination and other model parameters. AGN seen at higher inclination with respect to the observer, such as Seyfert 2 galaxies, are expected to have fractional variability amplitude of the direct emission by a factor of a few higher than objects seen face on, such as the Seyfert 1s.
description: Astronomy and Astrophysics (in press)
G. Nicolini, Les bronzes figurés des sanctuaires ibériques
Creators: name: Ahrens, Dieter
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: G. Nicolini, Les bronzes figurés des sanctuaires ibériques. Preface de G.-Ch. Picard. Bibliothèque de l’école des hautes études hispaniques, fasc. XLI. Presses universitaires de France, Paris 1969. VIII, 296 S, 40 Taf.
description: Bonner Jahrbücher, Bd. 170 (1970): Bonner Jahrbücher
A Note on Gravitational Brownian Motion
Creators: name: Merritt, David
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Chandrasekhar's theory of stellar encounters predicts a dependence of the Brownian motion of a massive particle on the velocity distribution of the perturbing stars. One consequence is that the expectation value of the massive object's kinetic energy can be different from that of the perturbers. This effect is shown to be modest however, and substantially smaller than claimed in a recent study based on a more approximate treatment of the encounter equations.
description: 7 pages, 3 figures
An efficient method for strongly correlated electrons in one dimension
Creators: name: Mitxelena, Ion
name: Piris, Mario
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The one-particle reduced density matrix functional theory in its natural orbital functional (NOF) version is used to study strongly correlated electrons. We show the ability of the Piris NOF 7 (PNOF7) to describe non-dynamic correlation effects in one-dimensional (1D) systems. An extensive study of 1D systems that includes Hydrogen (H) chains and the 1D Hubbard model with periodic boundary conditions is provided. Different filling situations and large sizes with up to 122 electrons are considered. Compared to quasi-exact results, PNOF7 is accurate in different correlation regimes for the 1D Hubbard model even away from the half-filling, and maintains its accuracy when the system size increases. The symmetric and asymmetric dissociations of the linear H chain composed of 50 atoms are described to remark the importance of long-range interactions in presence of strong correlation effects. Our results compare remarkably well with those obtained at the density-matrix renormalization group level of theory.
description: 5 pages, 4 figures, 3 tables
Do family ties with those left behind intensify or weaken migrants’ assimilation?
Creators: name: Stark, Oded
name: Dorn, Agnieszka
name: Stark, Oded
name: Dorn, Agnieszka
Publisher: name: Unknown
Year: 2012
Subjects: subject: Community/Rural/Urban Development
subject: Institutional and Behavioral Economics
subject: Labor and Human Capital
subject: Assimilation of migrants
subject: Acculturation identity
subject: Links with the home country
subject: Altruism
subject: Remittances

description: Strong ties with the home country and with the host country can coexist. An altruistic migrant who sends remittances to his family back home assimilates more the more altruistic he is, and also more than a non-remitting migrant.
MOESM1 of Is there an interest in repeating the vaginal administration of dinoprostone (PropessÂ®), to promote induction of labor of pregnant women at term? (RE-DINO): study protocol for a randomized controlled trial
Creators: name: P. Coste Mazeau
name: M. Hessas
name: R. Martin
name: J.-L. Eyraud
name: F. Margueritte
name: Y. Aubard
name: C. Sallee
name: F. Sire
name: T. Gauthier
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Biotechnology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. SPIRIT 2013 Checklist: Recommended items to address in a clinical trial protocol and related documents.