cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Interactive effects of altitude, microclimate and shading system on coffee leaf rust
Creators: name: Liebig, Theresa
name: Ribeyre, Fabienne
name: Läderach, Peter
name: Hans-Michael Poehling
name: Asten, Piet Van
name: Avelino, Jacques
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Shade effects on coffee diseases are ambiguous because they vary depending on the season and environment. Using Coffee Leaf Rust (CLR) as an example, we demonstrate relationships between the environment and shading systems and their effects on disease intensity. We characterized seasonal variations in microclimate and CLR incidence across different altitudes and shading systems, and integrated effects between the environment, shading systems, microclimate and CLR into a piecewise structural equation model. The diurnal temperature range was higher in unshaded systems, but differences decreased with altitude. Humidity related indicators in shaded systems decreased with altitude. At mid and high altitudes, high CLR incidence occurred in the shading system showing a low diurnal temperature range and a high dew point temperature. Our study demonstrates how microclimatic indicators vary as a function of the season, altitude and the coffee shading system, and how this in turn is related to CLR.
Energy and length in a topological planar quadrilateral
Creators: name: Hersonsky, Sa'ar
Publisher: name: arXiv
Year: 2005
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 51M25

description: We provide bounds for the product of the lengths of distinguished shortest paths in a finite network induced by a triangulation of a topological planar quadrilateral.
description: 10 pages, 3 figures; to appear in Euro. J. of Combinatorics; v2: a revised version which incorporates some suggestions and corrections of the referees
Quarks at next-to-eikonal accuracy in the CGC I: Forward quark-nucleus scattering
Creators: name: Altinoluk, Tolga
name: Beuf, Guillaume
name: Czajka, Alina
name: Tymowska, Arantxa
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive Next-to-Eikonal (NEik) corrections to the background quark propagator, which stem from (i) considering a finite longitudinal width target instead of an infinitely thin shockwave and (ii) including the interaction of the quark with the transverse components of the background field. These two different corrections to the eikonal approximation combine together and provides a gauge covariant expression for the quark propagator at NEik accuracy. We then apply our results to quark (or antiquark) scattering on a nucleus at NEik accuracy, considering both unpolarized cross section and helicity asymmetry.
description: 47 pages, 2 figures. A new appendix and extra discussions are added, some typos are corrected, new references are added, acknowledgments are modified. Results and conclusions are unchanged
Development and Implementation of a Health Planner for Pigs
Creators: name: Bokma-Bakker, Martien H.
name: Bokma-Bakker, Martien H.
Publisher: name: Unknown
Year: 2002
Subjects: Farm Management
Livestock Production/Industries

description: In order to support animal health care on pig farms a Health Planner for Pigs has been developed. In 1998 the practical value of the system was tested under field condition on pig farms. Due to the promising results of the field experiment, the Dutch Farmers Organisation (LTO-Nederland) in 1999 adopted the system and coordinates the adaptation and introduction into practice. In 2001, veterinarians, farm advisers and farmers will be educated in using the Health Planner. Some parts of the Health Planner will be automised and linked to existing farm management information systems.
Förderkreis Breviergebet, Evangelisch-Katholisches Stundengebet
Creators: name: Klein, Laurentius
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 32 Nr. 1 (1983): Ökumenische Rundschau, Band 32, Heft 1
Establishment of the Coulomb law in the layer phase of a pure U(1) lattice gauge theory
Creators: name: Farakos, K.
name: Vrentzos, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this article we examine the Layer phase of the five dimensional, anisotropic, Abelian gauge model. Our results are to be compared with the ones of the 4D U(1) gauge model in an attempt to verify that four dimensional physics governs the four dimensional layers. The main results are: i) From the analysis of Wilson loops we verified the $\frac{1}{R}$ behavior, in the layered phase, for the potential between heavy charges. The renormalized fine structure constant in the layer phase is found to be equal to that of 4D Coulomb phase,$α_{layer}$=$α_{4D}$. ii) Based on the helicity modulus analysis we show that the layers are in the Coulomb phase while the transverse bulk space is in the confining phase. We also calculated the renormalized coupling $β_{R}$ and found results compatible with those obtained from the Coulomb potential. Finally we calculated the potential in the 5D Coulomb phase and found $\frac{1}{R^{2}}$ behavior for the static $q \bar{q}$ potential. From the study of the helicity modulus we have a possible estimate for the five dimensional renormalized fine structure constant in the region of the critical value of the bare gauge coupling.
description: 25 pages, 10 figures
Identification of Hazardous Locations on City Streets
Creators: name: Zegeer, Charles V.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1975
Subjects: subject: Transportation Engineering

description: The purpose of this study was to develop an effective method for identifying hazardous locations in Kentucky cities (over 2,500 population). Methods used in 45 other states were reviewed. Accident information for 69 of the 97 cities over 2,500 population was used to develop criteria for an identification method.  A Number Method was selected for initial identification of midblocks and intersections on arterial-collector streets and on urban freeways. Rate-Quality Control Methods were included in the form of a critical rate factor computed for each location. A set of critical rate curves was constructed for easy determination of critical locations. A computer program ranks sites according to the criteria proposed.
Extensions of the VaR approach to portfolio selection with non-normal returns
Creators: name: Tse, Wai
Publisher: name: University of British Columbia
Year: 2009

description: The well-known mean-variance approach to portfolio selection problem proposed by Markowitz (1952) is often citicized for its use of variance as a measure of risk exposure. Recently, Value at Risk (VaR) has become a popular alternative for measuring risk in many firms. Using the idea of VaR, we formulated a chance constrained programming problem for portfolio selection. Untill recently, most real life applications rely on the normality distributional assumption of the asset returns which seems to be inconsistent with the empirical distributions. To relax this assumption, our study focused on the extensions of the VaR approach to portfolio selection to the class of Elliptically Contoured Distributed returns, and time-varying distributed returns. For the later case, we proposed a new solution via empirical distributions. Moreover, a profile map of returns versus risks was proposed so that, the optimal portfolio could be identified for various time-window sizes. The performance of various portfolios over different time periods were evaluated by means of off-sample cumulative returns and a new return-to-risk measure.
Gravity-wave detectors as probes of extra dimensions
Creators: name: Clarkson, Chris
name: Maartens, Roy
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: If string theory is correct, then our observable Universe may be a 3-dimensional "brane" embedded in a higher-dimensional spacetime. This theoretical scenario should be tested via the state-of-the-art in gravitational experiments -- the current and upcoming gravity-wave detectors. Indeed, the existence of extra dimensions leads to oscillations that leave a spectroscopic signature in the gravity-wave signal from black holes. The detectors that have been designed to confirm Einstein's prediction of gravity waves, can in principle also provide tests and constraints on string theory.
description: Fourth prize in the Gravity Research Foundation 2005 essay competition
Training Data Augmentation for Deep Learning Radio Frequency Systems
Creators: name: Clark, William H.
name: Hauser, Steven
name: Headley, William C.
name: Michaels, Alan J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Applications of machine learning are subject to three major components that contribute to the final performance metrics. Within the category of neural networks, and deep learning specifically, the first two are the architecture for the model being trained and the training approach used. This work focuses on the third component, the data used during training. The primary questions that arise are ``what is in the data'' and ``what within the data matters?'' Looking into the Radio Frequency Machine Learning (RFML) field of Automatic Modulation Classification (AMC) as an example of a tool used for situational awareness, the use of synthetic, captured, and augmented data are examined and compared to provide insights about the quantity and quality of the available data necessary to achieve desired performance levels. There are three questions discussed within this work: (1) how useful a synthetically trained system is expected to be when deployed without considering the environment within the synthesis, (2) how can augmentation be leveraged within the RFML domain, and lastly, (3) what impact knowledge of degradations to the signal caused by the transmission channel contributes to the performance of a system. In general, the examined data types each have useful contributions to a final application, but captured data germane to the intended use case will always provide more significant information and enable the greatest performance. Despite the benefit of captured data, the difficulties and costs that arise from live collection often make the quantity of data needed to achieve peak performance impractical. This paper helps quantify the balance between real and synthetic data, offering concrete examples where training data is parametrically varied in size and source.
description: 18 pages, 11 figures, journal, to be published in Journal of Defense Modeling and Simulation, revisions include typos and other revisions for clarity
Entanglement of Trapped-Ion Clock States
Creators: name: Haljan, P. C.
name: Lee, P. J.
name: Brickman, K. -A.
name: Acton, M.
name: Deslauriers, L.
name: Monroe, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A Mølmer-Sørensen entangling gate is realized for pairs of trapped $^{111}$Cd$^+$ ions using magnetic-field insensitive "clock" states and an implementation offering reduced sensitivity to optical phase drifts. The gate is used to generate the complete set of four entangled states, which are reconstructed and evaluated with quantum-state tomography. An average target-state fidelity of 0.79 is achieved, limited by available laser power and technical noise. The tomographic reconstruction of entangled states demonstrates universal quantum control of two ion-qubits, which through multiplexing can provide a route to scalable architectures for trapped-ion quantum computing.
description: 6 pages, 5 figures
A Wavelet Whittle estimator of the memory parameter of a non-stationary Gaussian time series
Creators: name: Moulines, Eric
name: Roueff, François
name: Taqqu, Murad S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62M15, 62M10, 62G05 (Primary); 62G20, 60G18 (Secondary)

description: We consider a time series $X=\{X_k, k\in\mathbb{Z}\}$ with memory parameter $d\in\mathbb{R}$. This time series is either stationary or can be made stationary after differencing a finite number of times. We study the "Local Whittle Wavelet Estimator" of the memory parameter $d$. This is a wavelet-based semiparametric pseudo-likelihood maximum method estimator. The estimator may depend on a given finite range of scales or on a range which becomes infinite with the sample size. We show that the estimator is consistent and rate optimal if $X$ is a linear process and is asymptotically normal if $X$ is Gaussian.
Adversarial Text-to-Image Synthesis: A Review
Creators: name: Frolov, Stanislav
name: Hinz, Tobias
name: Raue, Federico
name: Hees, Jörn
name: Dengel, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: With the advent of generative adversarial networks, synthesizing images from textual descriptions has recently become an active research area. It is a flexible and intuitive way for conditional image generation with significant progress in the last years regarding visual realism, diversity, and semantic alignment. However, the field still faces several challenges that require further research efforts such as enabling the generation of high-resolution images with multiple objects, and developing suitable and reliable evaluation metrics that correlate with human judgement. In this review, we contextualize the state of the art of adversarial text-to-image synthesis models, their development since their inception five years ago, and propose a taxonomy based on the level of supervision. We critically examine current strategies to evaluate text-to-image synthesis models, highlight shortcomings, and identify new areas of research, ranging from the development of better datasets and evaluation metrics to possible improvements in architectural design and model training. This review complements previous surveys on generative adversarial networks with a focus on text-to-image synthesis which we believe will help researchers to further advance the field.
description: Published at Neural Networks Journal, available at https://www.sciencedirect.com/science/article/pii/S0893608021002823
A simple model for the complex lag structure of microquasars
Creators: name: Varniere, Peggy
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The phase lag structure between the hard and soft X-ray photons observed in GRS 1915+105 and XTE J1550+564 has been said to be ``complex'' because the phase of the Quasi-Periodic Oscillation fundamental Fourier mode changes with time and because the even and odd harmonics signs behave differentely. From simultaneous X-ray and radio observations this seems to be related to the presence of a jet (level of radio emission). We propose a simple idea where a partial absorption of the signal can shift the phases of the Fourier modes and account for the phase lag reversal. We also briefly discuss a possible physical mechanism that could lead to such an absorption of the quasi-periodic oscillation modulation.
description: accepted by A&A Letters
Measuring Impacts of an Holistic Farm Business Management Training Program
Creators: name: Cameron, Donald
name: Chamala, Shankariah
name: Cameron, Donald
name: Chamala, Shankariah
Publisher: name: Unknown
Year: 2002
Subjects: Farm Management

description: This paper reports on the development of 4 new instruments to measure impacts of an extension program on farming family participants. A case study approach within an action research framework incorporating qualitative and quantitative domains was adopted to explore the impact on Queensland farmers of FutureProfit, a farm business management extension program. Two of these new measures, Management Constructs Change index and Management Objectives Change index, provided evidence of statistically significant changes in participant beliefs about, and attitudes towards farm business management. Although highly correlated with each other, these changes were unrelated statistically to any of seven other commonly used biographical or psychometric indices employed, including level of formal education. The third measure, the Bennett Change index, provided statistically significant evidence that attitudinal and behavioural changes were more frequent in participants with less formal education, but also more frequent in participants who had high urbanisation and self-directed learning index scores. A fourth measure, Values Domain Change, derived from the Management Objectives Change index, condensed objectives change data into values domainoriented scales, and showed that attitudinal change occurred across a wide spectrum of the recognized human values domains. Several conclusions are drawn from these findings, chief of which is that the approach used has successfully quantified impressionistic data in a way that offers potential for other researchers to document program impacts in terms other than hard quantitative measures such as changes in profitability.
Grammatical elicitation: Predicative nouns and verbal agreement paradigm
Creators: name: Calmo Jerónimo, Brenda
name: Laparle, Schuyler
name: Lemon, Tyler
name: Michael, Lev
name: Schwarz, Martha
name: Dos Santos, Wesley
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: mvj

description: Includes some lexical elicitation of common nouns; past tense of 'fall.' No audio recording.
Accumulation of salicylic acid in tomato plant under biological stress affects oviposition preference of Bemisia tabaci
Creators: name: Ueda, Hirokazu
name: Kugimiya, Soichi
name: Tabata, Jun
name: Kitamoto, Hiroko
name: Mitsuhara, Ichiro
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology
subject: Computational Biology

description: In field, plants are exposed to multiple biological stresses simultaneously; for example, insect damage and pathogenic virus infection. In this study, we constructed a simple tripartite experimental system using tomato plant, their insect pest Bemisia tabaci (whitefly), and infectious tomato mosaic virus (ToMV). In the choice test, whiteflies laid more eggs on uninfected plant than on ToMV-infected plant. Further, whiteflies hatched more and grew better on the uninfected plant. Salicylic acid (SA) accumulated in infected plants, and the expression of genes involved in SA production and SA-related response was significantly induced. These plant responses against ToMV infection were similar to those against whitefly attack or SA-treated plants. To examine the importance of plant endogenous SA for whitefly preference, we repeated the choice test using the NahG transgenic tomato that cannot accumulate SA. Whiteflies did not show oviposition preference between NahG plants with and without ToMV infection or whitefly infestation. Overall, whiteflies prefer healthy plants, and SA accumulation in response to biological stresses is involved in their preference.
Branching fractions of $B^-\to D^-X_{0,1}(2900)$ and their implications
Creators: name: Chen, Yan-Ke
name: Han, Jia-Jie
name: Lü, Qi-Fang
name: Wang, Jian-Peng
name: Yu, Fu-Sheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The exotic states $X_{0,1}(2900)$ with the quark flavor of $cs\bar{u}\bar{d}$ are recently observed in the mass spectrum of $D^+K^-$ in $B^-\to D^-D^+K^-$ by the LHCb collaboration. To explore the nature of $X_{0,1}(2900)$, except for analyzing their masses and decay widths as usually did in literatures, the study of their production mechanism in $B$-meson weak decays would provide another important information. The amplitude of $B^-\to D^- X_{0,1}$ is non-factorizable. We consider the final-state-interaction effects and calculate them via the rescattering mechanism. The measured branching fractions of $B^-\to D^- X_{0,1}$ are revealed. It is manifested by ${B}^-\to Λ_c^-Ξ_c^{(\prime)0}$ and $Λ_b^0\to P_c^+K^-$ that the rescattering mechanism can result in the relatively large branching fractions. The similar processes of $B^-\to π^-X_{0,1}$ are also analyzed. The isospins of $X_{0,1}$ can be investigated by $B\to DX_{0,1}^{\pm,0}$ decays.
description: 12 pages, 10 figures. Version published in EPJC. Additional contributions are added in $B\to \pi X_{0,1}$ in Fig.8. Numerical results of the isospin-partner processes are changed by a factor of 2 in Eqs.(12) and (13)
Some Fréchet algebras for which the Chern character is an isomorphism
Creators: name: Solleveld, Maarten
Publisher: name: arXiv
Year: 2005
Subjects: subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 19D55, 19L10, 22E50, 46L80

description: Using similarities between topological $K$-theory and periodic cyclic homology we show that, after tensoring with $\mathbb C$, for certain Fréchet algebras the Chern character provides an isomorphism between these functors. This is applied to prove that the Hecke algebra and the Schwartz algebra of a reductive $p$-adic group have isomorphic periodic cyclic homology. The main theorem in the first version was incorrect for algebras related to noncompact manifolds. This has no effect on the results concerning p-adic groups. In the appendix we show that an analogous cohomological result does hold in the noncompact case.
description: 17 pages, in the third version an appendix was added
Competence Development Program for the Farmer with Reference to Life as Well as Business
Creators: name: Andersson, Per
name: Andersson, Per
Publisher: name: Unknown
Year: 2002
Subjects: Farm Management
Teaching/Communication/Extension/Profession

description: The accelerating changes in the surrounding world and also increasing demands from politicians, consumers, their family etc., makes many farmers feel stressed, focus a lot on threats and weaknesses, and so they become rather indistinct in their relations between private life and business.. At the same time, physical work tends to exclude creative work and strategic thinking. This paper will describe a program, developed for Swedish farmers and other rural businessmen in co-operation between Swedish Farmers Union, (project-owner), and the Swedish University of Agricultural Sciences. Step 1 is done in groups of 8 to 12 farmers, guided by tutors, who have been given a four days training program in coaching a group to grow individually in their personality and self-confidence. Each farmer does a "SWOT"-analysis focused on opportunities and strengths. After formulating the idea/mission, goals and activities needed to reach the goals for the business, they formulate the same for their own life. Especially, they focus on their need of competence development, and bring them into a net-based "marketplace for competence". In step 2 a number of new "blocks" have been developed. One is a "Balanced Scorecard" for farmers and rural entrepreneurs. The farmers joining the program find themselves more distinct in relation to the surrounding world and in the relation between life and business. The discussions about life ideas and life quality have been much appreciated. The possibility for strategic thinking and the close connection between strategy and daily work, the focusing on "opportunities and strengths" and the balancing process in the "Balanced Scorecard" are some of the most valuable aspects.
Spin distillation cooling of ultracold Bose gases
Creators: name: Świsłocki, Tomasz
name: Gajda, Mariusz
name: Brewczyk, Mirosław
name: Deuar, Piotr
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the spin distillation of spinor gases of bosonic atoms and find two different mechanisms in ${}^{52}$Cr and $^{23}$Na atoms, both of which can cool effectively. The first mechanism involves dipolar scattering into initially unoccupied spin states and cools only above a threshold magnetic field. The second proceeds via equilibrium relaxation of the thermal cloud into empty spin states, reducing its proportion in the initial component. It cools only below a threshold magnetic field. The technique was initially demonstrated experimentally for a chromium dipolar gas [B. Naylor et al., Phys. Rev. Lett. 115, 243002 (2015)], whereas here we develop the concept further and provide an in-depth understanding of the required physics and limitations involved. Through numerical simulations, we reveal the mechanisms involved and demonstrate that the spin distillation cycle can be repeated several times, each time resulting in a significant additional reduction of the thermal atom fraction. Threshold values of magnetic field and predictions for the achievable temperature are also identified.
description: 15 pages, 11 figures. Extended discussion and improved sectioning
Quantum gate for Q switching in monolithic photonic bandgap cavities containing two-level atoms
Creators: name: Greentree, Andrew D.
name: Salzman, J.
name: Prawer, Steven
name: Hollenberg, Lloyd C. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Photonic bandgap cavities are prime solid-state systems to investigate light-matter interactions in the strong coupling regime. However, as the cavity is defined by the geometry of the periodic dielectric pattern, cavity control in a monolithic structure can be problematic. Thus, either the state coherence is limited by the read-out channel, or in a high Q cavity, it is nearly decoupled from the external world, making measurement of the state extremely challenging. We present here a method for ameliorating these difficulties by using a coupled cavity arrangement, where one cavity acts as a switch for the other cavity, tuned by control of the atomic transition.
description: 6 pages, 5 figures, 1 table
Triphoton production at hadron colliders in NNLO QCD
Creators: name: Kallweit, Stefan
name: Sotnikov, Vasily
name: Wiesemann, Marius
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present next-to-next-to-leading-order (NNLO) QCD corrections to the production of three isolated photons in hadronic collisions at the fully differential level. We employ qT subtraction within MATRIX and an efficient implementation of analytic two-loop amplitudes in the leading-colour approximation to achieve the first on-the-fly calculation for this process at NNLO accuracy. Numerical results are presented for proton-proton collisions at energies ranging from 7 TeV to 100 TeV. We find full agreement with the 8 TeV results of arXiv:1911.00479 and confirm that NNLO corrections are indispensable to describe ATLAS 8 TeV data. In addition, we demonstrate the significance of NNLO corrections for future precision studies of triphoton production at higher collision energies.
description: 18 pages, 8 figures, 2 tables. Version published in PLB
Universal Learning of Repeated Matrix Games
Creators: name: Poland, Jan
name: Hutter, Marcus
Publisher: name: arXiv
Year: 2005
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We study and compare the learning dynamics of two universal learning algorithms, one based on Bayesian learning and the other on prediction with expert advice. Both approaches have strong asymptotic performance guarantees. When confronted with the task of finding good long-term strategies in repeated 2x2 matrix games, they behave quite differently.
description: 16 LaTeX pages, 8 eps figures
Hauschild, Wolf-Dieter (Hrsg.) / Wilkens, Erwin (Hrsg.), Kirchliches Jahrbuch für die Evangelische Kirche in Deutschland 1978
Creators: name: Krüger
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 32 Nr. 1 (1983): Ökumenische Rundschau, Band 32, Heft 1
Lattice relaxation, electronic screening, and spin and orbital phase diagram of LaTiO$_3$/SrTiO$_3$ superlattices
Creators: name: Okamoto, Satoshi
name: Millis, Andrew J.
name: Spaldin, Nicola A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The effects of lattice relaxation in LaTiO$_3$/SrTiO$_3$ superlattices are investigated using a combination of LDA$+U$ density functional theory, and Hartree-Fock effective Hamiltonian calculations. We find noticeable ($\sim 0.1$--0.2 Å) distortions of the TiO$_6$ octahedra in the near-La region. The resulting screening changes the Ti $d$-electron density substantially. Tight-binding fits to the relaxed-lattice band structure, combined with Hartree-Fock calculations of the resulting model, reveal a novel phase with $xy$ orbital order, which does not occur in bulk LaTiO$_3$, or in the hypothetical unrelaxed structure.
description: 5 pages, 3 figures, 1 table
Additional file 1 of The experience of patients with hematological malignancy in their terminal stage: a phenomenological study from Jordan’s perspective
Creators: name: Alnaeem, Mohammad M.
name: Shehadeh, Anas
name: Nashwan, Abdulqadir J.
Publisher: name: figshare
Year: 2024
Subjects: Medicine
Biological Sciences not elsewhere classified
Cancer
Science Policy
Mental Health

description: Supplementary Material 1
Daraba in the Lowlands of Wallagga: Dynamics in Agro-Pastoral Economic Practices, 1840-1985
Creators: name: Hinew, Dereje
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2023

description: Daraba, an agro-pastoral economic activity, was practiced on a broad scale in lowland areas of Wallagga, Western Ethiopia. The lowlands, including the Angar-Didessa, Gibe, Wama, Finca’a, Dabus, Birbir, and others, were centers for complementary grazing, hora (saltlick), swidden cultivation, and food gathering. This article deals with historical trends in the practice of herding livestock and swidden cultivation in these river valleys. Beginning in the early 19th century, daraba practice steadily declined owing to changes in land use and rights of access to lowland resources, such as grazing land and hora. The agents of these changes were the local rulers, including abba-qoros, and the state. The process negatively affected the livestock economy in general and herders’ livelihoods in particular. Evidence for the study came from reports of travellers, documents on state farms, and settlement programs as well as oral accounts. By employing this evidence, the study tries to demonstrate that the agro-pastoral practices in the lowlands were intimately associated with the scope of farmers’ access to valley land and the availability of pertinent resources there. This study argues that resource control and land use changes denied the rights of farmers’ access to the resources and profoundly discouraged agro-pastoralism in favour of modern cultivation and sedentarization. Nevertheless, a land use policy that considers the preservation of saltlicks and grazing areas in the lowlands could mitigate the declining livestock economy.
description: East African Journal of Social Sciences and Humanities, Vol. 8 No. 1 (2023)
Fast magnetic reconnection structures in Poynting-flux dominated jets
Creators: name: Kadowaki, Luís H. S
name: Pino, Elisabete M. de Gouveia Dal
name: Torrejon, Tania E. Medina
name: Mizuno, Yosuke
name: Kushwaha, Pankaj
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The ubiquitous relativistic jet phenomena associated with black holes play a major role in high and very-high-energy (VHE) astrophysics. In particular, observations have demonstrated that blazars show VHE emission with time-variability from days (in the GeV band) to minutes (in the TeV band), implying very compact emission regions. The real mechanism able to explain the particle acceleration process responsible for this emission is still debated, but magnetic reconnection has been lately discussed as a strong potential candidate and, in some circumstances, as the only possible one. In this work, we present the results of three-dimensional special relativistic magnetohydrodynamic simulations of the development of reconnection events driven by turbulence induced by current-driven kink instability along a relativistic jet. We have performed a systematic identification of all reconnection regions in the system, characterizing their local magnetic field topology and quantifying the reconnection rates. We obtained average rates of $0.051\pm0.026$ (in units of the Alfvén speed) which are comparable to the predictions of the theory of turbulence-induced fast reconnection. Detailed statistical analysis also demonstrated that the fast reconnection events follow a log-normal distribution, which is a signature of its turbulent origin. To probe the robustness of our method, we have applied our results to the blazar Mrk 421. Building a synthetic light curve from the integrated power of the magnetic reconnection events, we evaluated the time-variability from a power spectral density analysis, obtaining a good agreement with the observations in the GeV band. This suggests that turbulent fast magnetic reconnection driven by kink instability can be a possible process behind the high energy emission variability phenomena observed in blazars.
description: 22 pages, 12 figures, Accepted for publication in ApJ
Economic Modeling of Hungarian Farms Incorporating Nature Conservation
Creators: name: Acs, Szvetlana
name: Berentsen, Paul B.M.
name: Takacs-Gyorgy, Katalin
name: Huirne, Ruud B.M.
name: Acs, Szvetlana
name: Berentsen, Paul B.M.
name: Takacs-Gyorgy, Katalin
name: Huirne, Ruud B.M.
Publisher: name: Unknown
Year: 2002
Subjects: Farm Management
Land Economics/Use

description: Hungary's imminent entrance into the EU calls for a farm-level financial support system aiming at combining agricultural production with nature conservation targets. Within the Hungarian National Agri-environmental Programme (NAEP) for the Environmentally Sensitive Areas, a payment system was developed. For each individual region the amount of support for every environmentally friendly farming prescription package (tier) was established using the support calculation methodology of the EU. The purpose of this paper is to analyse the impact of the packages on the income of an individual mixed farm. In contrast to many other studies, in the current study the analysis was carried out with the context of the whole farm, taking into consideration the entire production structure. The amount of support which the farmer needs to sign up for a contract turned out to be quite different from the actual payments done by the Hungarian government.
Non-Riemannian isometries from double field theory
Creators: name: Blair, Chris D. A.
name: Oling, Gerben
name: Park, Jeong-Hyuck
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore the notion of isometries in non-Riemannian geometries. Such geometries include and generalise the backgrounds of non-relativistic string theory, and they can be naturally described using the formalism of double field theory. Adopting this approach, we first solve the corresponding Killing equations for constant flat non-Riemannian backgrounds and show that they admit an infinite-dimensional algebra of isometries which includes a particular type of supertranslations. These symmetries correspond to known worldsheet Noether symmetries of the Gomis-Ooguri non-relativistic string, which we now interpret as isometries of its non-Riemannian doubled background. We further consider the extension to supersymmetric double field theory and show that the corresponding Killing spinors can depend arbitrarily on the non-Riemannian directions, leading to "supersupersymmetries" that square to supertranslations.
description: 31+5 pages, v2: minor changes
Refugee-Host Relationship in Ethiopia: A Case of Eritrean Refugees in Tigray Region
Creators: name: Asfaw, Alemu
name: Minale, Kalewongel
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2023

description: This study explores the nature of refugee-host relations in Ethiopia with particular reference to the Eritrean refugees and the hosts that are found in the Tigray regional state. To this effect, primary data were collected through interview, focus group discussion (FGD), document review, and observation; participants for the study were selected through purposive sampling technique, and the study employed a basic qualitative data analysis method. It was found out that the interaction between the two groups has been dynamic, changing from almost "closed’ and ‘antagonistic’ to ‘cordial’ type of relationship in the process, and now, this smooth relationship has been negatively impacted by and faced obstacles due to the on-going war between the Tigray regional state and the federal government. The key factors that are involved in the transformation of their relationship and the status of the refugees in the eyes of the local hosts emerge both internally from the refugees and the hosts themselves (refugees’ aspiration, cultural similarity, economic benefits of refugees, familiarity and socialization between refugees and hosts), and externally from the work of the government. The paper concludes that inter-group relationships change across time, and these changes are far from absolute as they are accompanied by continuities of some elements of past relationships.
description: East African Journal of Social Sciences and Humanities, Vol. 8 No. 1 (2023)
Isotope shift in the dielectronic recombination of three-electron ^{A}Nd^{57+}
Creators: name: Brandau, C.
name: Kozhuharov, C.
name: Harman, Z.
name: Müller, A.
name: Schippers, S.
name: Kozhedub, Y. S.
name: Bernhardt, D.
name: Böhm, S.
name: Jacobi, J.
name: Schmidt, E. W.
name: Mokler, P. H.
name: Bosch, F.
name: Kluge, H. -J.
name: Stöhlker, Th.
name: Beckert, K.
name: Beller, P.
name: Nolden, F.
name: Steck, M.
name: Gumberidze, A.
name: Reuschl, R.
name: Spillmann, U.
name: Currell, F. J.
name: Tupitsyn, I. I.
name: Shabaev, V. M.
name: Jentschura, U. D.
name: Keitel, C. H.
name: Wolf, A.
name: Stachura, Z.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Isotope shifts in dielectronic recombination spectra were studied for Li-like ^{A}Nd^{57+} ions with A=142 and A=150. From the displacement of resonance positions energy shifts δE^{142,150}(2s-2p_1/2)= 40.2(3)(6) meV (stat)(sys)) and δE^{142,150}(2s-2p_3/2) = 42.3(12)(20) meV of 2s-2p_j transitions were deduced. An evaluation of these values within a full QED treatment yields a change in the mean-square charge radius of ^{142,150}δ = -1.36(1)(3) fm^2. The approach is conceptually new and combines the advantage of a simple atomic structure with high sensitivity to nuclear size.
description: 10 pages, 3 figures, accepted for publication in Physical Review Letters
Imperfect bifurcation in the rotation of a propeller-shaped camphor rotor
Creators: name: Koyano, Yuki
name: Kitahata, Hiroyuki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigated the bifurcation structure on the self-propelled motion of a camphor rotor at a water surface. The center of the camphor rotor was fixed by the axis, and it showed rotational motion around it. Due to the chiral asymmetry of its shape, the absolute values of the angular velocities in clockwise and counterclockwise directions were different. This asymmetry in the angular velocities implies an imperfect bifurcation. From the numerical simulation results, we discuss the condition for the occurrence of the imperfect bifurcation.
description: 11 pages, 11 figures
Lexical Enrichment in Hadiyyisa
Creators: name: Handamo, Samuel
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2023

description: The present study attempted to describe lexical enrichment in one of the Highland East Cushitic languages, Hadiyyisa. Instructors from Wachemo University and Hossana College of Teachers Education took part in this study. The data was collected and analyzed using a qualitative methodology. The main tool for data gathering was document analysis, though key informant interviews and questionnaires were used in complementing the former. The findings showed that language-internal and external resources were extensively employed as strategies of lexical enrichment in Hadiyyisa. For lexical enrichment in the language, semantic transfer and compounding were the most common methods, whereas abbreviation and blending were less common. When it comes to language-external means, borrowing and loan translation were the most productive ways of enrichment in Hadiyyisa. Hadiyyisa did not have unmodified borrowing since the language borrowed terms with adaptations. Hadiyyisa relied on foreign languages such as English, Arabic, French, and Italian for source languages rather than Ethiopian languages, including related Cushitic languages. The majority of the European loanwords entered Hadiyyisa via Amharic, and the loan translations in Hadiyyisa came from English and Amharic as source languages. It is imperative that unnecessary borrowings should be avoided and native Hadiyya words should be substituted in relation to lexical expansion. Furthermore, standardization is in order for the observed concurrent use of loanwords and their native counterparts in Hadiyyisa.
description: East African Journal of Social Sciences and Humanities, Vol. 8 No. 1 (2023)
The Institutionalization of Child-Friendly Bench in a Child Protection System: Practices, Perspectives and Barriers in Gimbi Town, Oromia, Ethiopia
Creators: name: Daraje, Nimonam
name: Dida, Taye
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2023

description: The main objective of the study was to examine the practices, and perspectives of the child friendly bench workers and barriers of child friendly bench at Western Wallaga, Gimbi town. The study employed qualitative research with case study methods as it helped get a holistic and in-depth understanding of views of the study participants. Relevant study participants were purposively selected, and thus, relevant data were gathered through in-depth interview and observation. Out of the raw data, patterns, categories or themes were built, interpreted, triangulated and thematically analyzed. It was revealed that the advent of child friendly bench was appreciated and welcomed as a result of which different child protection cases were attempted to be entertained although the implementation status was not as such satisfactory vis-à-vis the prevalence and persistence of cases. Obstructing factors, including shortage of budget, absence of capacity building trainings, limitation of commitment, lack of collaboration, shortage of facilities, and not yet treatment of cases at separate room were among the barriers of child friendly bench. Overall, child friendly bench failed to have the attributes to qualify for the task it was designed to execute although the existences of some attempts were undeniable. Hence, empathetic and concerted efforts were implied to meet the very objective of child friendly bench, which is child protection.
description: East African Journal of Social Sciences and Humanities, Vol. 8 No. 1 (2023)
Early SUSY discovery at LHC without missing E_T: the role of multi-leptons
Creators: name: Baer, Howard
name: Prosper, Harrison
name: Summy, Heaya
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Traditional searches for SUSY at hadron colliders rely heavily on the presence of large missing transverse energy (ME_T) to reject background compared to signal. On the other hand, initial searches for new physics at the LHC may not be able to rely on ME_T due to a variety of detector calibration issues. We show that much of SUSY parameter space is accessible to discovery even {\it without} using ME_T, and with rather low integrated luminosities 0.1-1 fb^{-1}. A key role is played by isolated lepton multiplicity which arises from gluino and squark cascade decays. Requiring \ge 3 isolated leptons plus jets yields a high rate of background rejection compared to signal. We find an LHC reach in m(gluino) of about 700-750 GeV for just 0.1 fb^{-1} of integrated luminosity by requiring events with \ge 4 jets plus \ge 3 isolated leptons but {\it without} using ME_T. If a large enough event sample is assembled, then kinematic reconstruction of sparticle mass properties should be possible just as in the case where large ME_T is required. SUSY without ME_T can also be seen in opposite-sign/same flavor {\it dilepton plus jets} events when a characteristic invariant mass edge stands out against background.
description: 13 pages including 9 eps figures. Version 2 has just one added citation
Kelvin wake pattern at small Froude numbers
Creators: name: Pethiyagoda, Ravindra
name: Moroney, Timothy J.
name: Lustri, Christopher J.
name: McCue, Scott W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The surface gravity wave pattern that forms behind a steadily moving disturbance is well known to comprise divergent waves and transverse waves, contained within a distinctive V-shaped wake. In this paper, we are concerned with a theoretical study of the limit of a slow-moving disturbance (small Froude numbers), for which the wake is dominated by transverse waves. We consider three configurations: flow past a submerged source singularity, a submerged doublet, and a pressure distribution applied to the surface. We treat the linearised version of these problems and use the method of stationary phase and exponential asymptotics to demonstrate that the apparent wake angle is less than the classical Kelvin angle and to quantify the decrease in apparent wake angle as the Froude number decreases. These results complement a number of recent studies for sufficiently fast-moving disturbances (large Froude numbers) where the apparent wake angle has been also less than the classical Kelvin angle. As well as shedding light on the wake angle, we also study the fully nonlinear problems for our three configurations under various limits to demonstrate the unique and interesting features of Kelvin wake patterns at small Froude numbers.