cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Baaroo Hymn: A Unique Arsi Oromo Oral Genre and Its Major Features and Functions
Creators: name: Hajiadem, Temam
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2021

description: This is the study of Baaroo, praise-hymn of the Arsi Oromo. The main function of Baaroo is to praise the Arsi Oromo saint, Sheikh Hussein, who lived in the twelfth-century at Anajina in Bale. Since some of the Arsi Oromo have been Islamized from the middle of the nineteenth-century, the importance of Baaroo hymns has also increased. The Arsi Oromo were originally followers of Waaqeffanna religion. However, gradually Islam spread among them. Consequently, the Arsi Oromo began to follow two religions in a syncretistic manner. It was from this phenomenon that the Baaroo genre developed having diverse functions. This distinctive Baaroo genre developed by the Arsi Oromo was not sufficiently studied by scholars. It is this shortcoming that led the writer of the paper to do more investigations on it. The data which were used to reconstruct the Baaroo history came from interview carried out by the researcher in four places (Amigna, Balee Gasgar, Anajina and Ghinnir) as well as from analysis of collected Baaroo hymns and some written documents. Based on these data, the writer concludes that the functions of Baaroo hymns are diverse. Some of these are historical narration, repository of Arsi music and poetry, and above all expression of the feelings of rage against a political oppression and domination exerted by Gabbar-Naftagna system. Moreover, the Baaroo hymns have played important roles in the development of Arsi Oromo self-consciousness and morale in the resistance against socio-cultural contempt and humiliation they sustained under exploitative systems for many years.
description: East African Journal of Social Sciences and Humanities, Vol. 6 No. 2 (2021)
Radio-loud flares from microquasars and radio-loudness of quasars
Creators: name: Nipoti, Carlo
name: Blundell, Katherine M.
name: Binney, James
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The low-frequency power spectra of the X-ray and radio emission from four microquasars suggest that two distinct modes of energy output are at work: (i) the `coupled' mode in which the X-ray and radio luminosities are closely coupled and vary only weakly, and (ii) the `flaring' mode, which dramatically boosts the radio luminosity but makes no impact on the X-ray luminosity. The systems are in the flaring mode only a few percent of the time. However, flares completely dominate the power spectrum of radio emission, with the consequence that sources in which the flaring mode occurs, such as GRS 1915+105 and Cyg X-3, have radio power spectra that lie more than an order of magnitude above the corresponding X-ray power spectra. Of the four microquasars for which we have examined data, in only one, Cyg X-1, is the flaring mode seemingly inactive. While Cyg X-1 is a black-hole candidate, one of the three flaring sources, Sco X-1, is a neutron star. Consequently, it is likely that both modes are driven by the accretion disk rather than black-hole spin. Radio imaging strongly suggests that the flaring mode involves relativistic jets. A typical microquasar is in the flaring mode a few percent of the time, which is similar to the fraction of quasars that are radio loud. Thus there may be no essential difference between radio-loud and radio-quiet quasars; radio loudness may simply be a function of the epoch at which the source is observed.
description: 5 pages, 3 figures. Matching version to appear in MNRAS
Marital quality revisited : do classic predictors of marital quality predict positive & negative feelings of marriage?
Creators: name: Prévost, Chantal
Publisher: name: University of British Columbia
Year: 2009

description: Marital satisfaction and dissatisfaction have traditionally been conceptualized as opposite ends of the same continuum. The marriage literature has largely assessed people's moods by placing them on a bipolar continuum, rather than allowing for positive and negative evaluations to be expressed independently. To assess marital quality, Fincham and Linfield (1997) have developed a 2-dimensional construct comprising positive and negative evaluations. In the present project, 101 married individuals were recruited through the University of British Columbia Child Care Services and randomly selected from the UBC telephone directory. In the present study, classic predictors of marital satisfaction were selected and applied to Fincham and Linfield's (1997) 2-dimensional model to determine if the correlates of satisfaction and dissatisfaction differed. Overall findings indicated mixed results concerning separate positive and negative dimensions in marital quality. Factor analysis supported Fincham and Linfield (1997), yet correlational analysis showed each factor was predicted by a more or less similar set of correlates. This study helped to further explore one approach to the construct of marital quality intended to increase conceptual clarity in the field.
Dichotomy Results for Fixed-Point Existence Problems for Boolean Dynamical Systems
Creators: name: Kosub, Sven
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computational Complexity (cs.CC)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Discrete Mathematics (cs.DM)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: F.2.2; F.1.1; F.1.3

description: A complete classification of the computational complexity of the fixed-point existence problem for boolean dynamical systems, i.e., finite discrete dynamical systems over the domain {0, 1}, is presented. For function classes F and graph classes G, an (F, G)-system is a boolean dynamical system such that all local transition functions lie in F and the underlying graph lies in G. Let F be a class of boolean functions which is closed under composition and let G be a class of graphs which is closed under taking minors. The following dichotomy theorems are shown: (1) If F contains the self-dual functions and G contains the planar graphs then the fixed-point existence problem for (F, G)-systems with local transition function given by truth-tables is NP-complete; otherwise, it is decidable in polynomial time. (2) If F contains the self-dual functions and G contains the graphs having vertex covers of size one then the fixed-point existence problem for (F, G)-systems with local transition function given by formulas or circuits is NP-complete; otherwise, it is decidable in polynomial time.
description: 17 pages; this version corrects an error/typo in the 2008/01/24 version
AutoBCS: Block-based Image Compressive Sensing with Data-driven Acquisition and Non-iterative Reconstruction
Creators: name: Gao, Yang
name: Gan, Hongping
name: CHen, Haiwei
name: Liu, Chunyi
name: Liu, Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Block compressive sensing is a well-known signal acquisition and reconstruction paradigm with widespread application prospects in science, engineering and cybernetic systems. However, state-of-the-art block-based image compressive sensing (BCS) methods generally suffer from two issues. The sparsifying domain and the sensing matrices widely used for image acquisition are not data-driven, and thus both the features of the image and the relationships among subblock images are ignored. Moreover, doing so requires addressing high-dimensional optimization problems with extensive computational complexity for image reconstruction. In this paper, we provide a deep learning strategy for BCS, called AutoBCS, which takes the prior knowledge of images into account in the acquisition step and establishes a subsequent reconstruction model for performing fast image reconstruction with a low computational cost. More precisely, we present a learning-based sensing matrix (LSM) derived from training data to accomplish image acquisition, thereby capturing and preserving more image characteristics than those captured by existing methods. In particular, the generated LSM is proven to satisfy the theoretical requirements of compressive sensing, such as the so-called restricted isometry property. Additionally, we build a noniterative reconstruction network, which provides an end-to-end BCS reconstruction framework to eliminate blocking artifacts and maximize image reconstruction accuracy, in our AutoBCS architecture. Furthermore, we investigate comprehensive comparison studies with both traditional BCS approaches and newly developed deep learning methods. Compared with these approaches, our AutoBCS framework can not only provide superior performance in terms of image quality metrics (SSIM and PSNR) and visual perception, but also automatically benefit reconstruction speed.
description: 15 pages, 12 figures
Back to or Away from the Glorious Past: A Critical Discourse Analysis of Abiy Ahmed’s Political Talk
Creators: name: Barkessa, Adugna
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2021

description: This article examines the discursive strategies used in Abiy’s political talk, discusses the binary descriptors employed in the talk, and explains the nexus between ideology and power in the discursive representations of the (in)glorious situations of the Oromo. To attain these objectives, the talk Abiy made at the meeting of Oromo Peoples’ Democratic Organization officials held at Adama Town on the 15th of July 2017 was purposely selected for the manipulative discursive strategies it contains. The talk was transcribed, translated into the English language and thematically analyzed following Fairclough’s (1992) and Wodak’s (2001) models of discourse analysis. The findings show that redefining, highlighting, shifting blame and claim, etc. are the main discursive strategies employed in the talk. The talk comprises negative (weak, loser, disunity etc.) and positive (strong, winner, unity etc.) binary descriptors to represent the official and non-official Oromo, respectively. The descriptors disclose that the negative behaviors the officials developed due to the power asymmetry prevails in the political economy of Ethiopia intimidate the positive one. Seemingly, the descriptors employed in that specific talk were to control mental and discursive spaces of the audience. The talk presents contradicting recommendations for the threatening situation the Oromo encounter. On the one hand, it recommends that the Oromo should restore their core identities demolished by the political systems of Ethiopia, and on the other hand, it insists the Oromo to shift the blame for their demolished identities from national to regional authority, and to shift identity claim from Oromoness to Ethiopianess.
description: East African Journal of Social Sciences and Humanities, Vol. 6 No. 2 (2021)
Quasinormal modes of Kerr-Newman black holes: coupling of electromagnetic and gravitational perturbations
Creators: name: Berti, Emanuele
name: Kokkotas, Kostas D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute numerically the quasinormal modes of Kerr-Newman black holes in the scalar case, for which the perturbation equations are separable. Then we study different approximations to decouple electromagnetic and gravitational perturbations of the Kerr-Newman metric, computing the corresponding quasinormal modes. Our results suggest that the Teukolsky-like equation derived by Dudley and Finley gives a good approximation to the dynamics of a rotating charged black hole for Q
description: 13 pages, 3 figures. Minor changes to match version accepted in Phys. Rev. D
Fast Uncertainty Quantification for Deep Object Pose Estimation
Creators: name: Shi, Guanya
name: Zhu, Yifeng
name: Tremblay, Jonathan
name: Birchfield, Stan
name: Ramos, Fabio
name: Anandkumar, Animashree
name: Zhu, Yuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deep learning-based object pose estimators are often unreliable and overconfident especially when the input image is outside the training domain, for instance, with sim2real transfer. Efficient and robust uncertainty quantification (UQ) in pose estimators is critically needed in many robotic tasks. In this work, we propose a simple, efficient, and plug-and-play UQ method for 6-DoF object pose estimation. We ensemble 2-3 pre-trained models with different neural network architectures and/or training data sources, and compute their average pairwise disagreement against one another to obtain the uncertainty quantification. We propose four disagreement metrics, including a learned metric, and show that the average distance (ADD) is the best learning-free metric and it is only slightly worse than the learned metric, which requires labeled target data. Our method has several advantages compared to the prior art: 1) our method does not require any modification of the training process or the model inputs; and 2) it needs only one forward pass for each model. We evaluate the proposed UQ method on three tasks where our uncertainty quantification yields much stronger correlations with pose estimation errors than the baselines. Moreover, in a real robot grasping task, our method increases the grasping success rate from 35% to 90%.
description: Video and code are available at https://sites.google.com/view/fastuq
Computation of Fluid Flows in Non-inertial Contracting, Expanding, and Rotating Reference Frames
Creators: name: Poludnenko, A. Y.
name: Khokhlov, A. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present the method for computation of fluid flows that are characterized by the large degree of expansion/contraction and in which the fluid velocity is dominated by the bulk component associated with the expansion/contraction and/or rotation of the flow. We consider the formulation of Euler equations of fluid dynamics in a homologously expanding/contracting and/or rotating reference frame. The frame motion is adjusted to minimize local fluid velocities. Such approach allows to accommodate very efficiently large degrees of change in the flow extent. Moreover, by excluding the contribution of the bulk flow to the total energy the method eliminates the high Mach number problem in the flows of interest. An important practical advantage of the method is that it can be easily implemented with virtually any implicit or explicit Eulerian hydrodynamic scheme and adaptive mesh refinement (AMR) strategy. We also consider in detail equation invariance and existence of conservative formulation of equations for special classes of expanding/contracting reference frames. Special emphasis is placed on extensive numerical testing of the method for a variety of reference frame motions, which are representative of the realistic applications of the method. We study accuracy, conservativity, and convergence properties of the method both in problems which are not its optimal applications as well as in systems in which the use of this method is maximally beneficial. Such detailed investigation of the numerical solution behavior is used to define the requirements that need to be considered in devising problem-specific fluid motion feedback mechanisms.
description: Accepted to Journal of Computational Physics; several additional numerical tests included. High resolution fig. 5 and additional animations of simulations can be found at http://flash.uchicago.edu/~apol/JCP/
New Evidence on Overweight Children in Urban China and the Role of Socioeconomic Factors
Creators: name: Dong, Fengxia
name: Jensen, Helen H.
name: Dong, Fengxia
name: Jensen, Helen H.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Health Economics and Policy
subject: China
subject: children's nutrition
subject: health
subject: nutrition
subject: obesity

description: Problems of overweight and obesity among children have increased in China and pose a problem both for individuals as well as for public social and health care systems. This study explores factors contributing to weight problems among children age 6 to 18 years old in urban China. Data come from the 2004 China Health and Nutrition Survey. Results from a binary probit model show that parents' being overweight, some patterns of TV use, and more frequent eating in fast food restaurants influence children being overweight. Among younger children, parent's dietary knowledge was a significant factor. For adolescents, TV habits and concern about being liked by friends were significant. The results suggest that targeted nutrition education, especially for parents and adolescents, and control of TV ads are policies that may have an effect on reducing children's overweight.
Deformation of loops in 2D packing of flexible rods
Creators: name: Sobral, T. A.
name: de Holanda, V. H.
name: Leal, F. C. B.
name: Saraiva, T. T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The injection of a long flexible rod into a two-dimensional domain yields a complex pattern commonly studied through elasticity theory, packing analysis, and fractal geometries. "Loop" is a one-vertex entity that is naturally formed in this system. The role of the elastic features of each loop in 2D packing has not yet been discussed. In this work, we point out how the shape of a given loop in the complex structure allows estimating local deformations and forces. First, we build sets of symmetric free loops and performed compression experiments. Then, tight packing configurations are analyzed by using image processing. We found that the dimensions of the loops, confined or not, obey the same dependence on the deformation. The result is consistent with a simple model based on 2D elastic theory for filaments, where the rod adopts the shape of Euler's elasticas between its contact points. The force and the stored energy are obtained from numerical integration of the analytic expressions. In an additional experiment, we obtain that the compression force for deformed loops corroborates the theoretical findings. The importance of the shape of the loop is discussed and we hope that the theoretical curves may allow statistical considerations in future investigations.
Depreciation erodes the Coase Conjecture
Creators: name: Karp, Larry S.
name: Karp, Larry S.
Publisher: name: Unknown
Year: 1995
Subjects: subject: Industrial Organization
subject: Research Methods/ Statistical Methods
subject: Coase Conjecture
subject: Depreciation
subject: Multiple Markov Equilibria

description: If a durable good monopolist produces at constant marginal costs and the good depreciates, there exists a family of Strong Markov Perfect Equilibrium (SMPE) with an infinitesimal period of commitment. One member of this family entails instantaneous production of the level of stock produced in a competitive equilibrium; this is consistent with the Coase Conjecture. Other SMPE in the family entail steady state production at a stock level lower than in the competitive equilibrium. In these equilibria, there may be a jump to the steady state, or the steady state may be approached asymptotically. Monopoly profits are positive in these equilibria, and the Coase Conjecture fails. We contrast this result to other papers which use non-Markov strategies to construct multiple equilibria.
Additional file 1 of Peripheral vertigo and subsequent risk of depression and anxiety disorders: a prospective cohort study using the UK Biobank
Creators: name: Chen, Xiaowan
name: Wei, Dang
name: Fang, Fang
name: Song, Huan
name: Yin, Li
name: Kaijser, Magnus
name: Gurholt, Tiril Pedersen
name: Andreassen, Ole Andreas
name: Valdimarsdóttir, Unnur
name: Hu, Kejia
name: Duan, Maoli
Publisher: name: figshare
Year: 2024
Subjects: subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Hematology
subject: Computational Biology

description: Additional file 1: Table S1. ICD-10 codes used to ascertain depression, anxiety, and peripheral vertigo.
Charge order and spin-singlet pairs formation in Ti4O7
Creators: name: Leonov, I.
name: Yaresko, A. N.
name: Antonov, V. N.
name: Schwingenschlögl, U.
name: Eyert, V.
name: Anisimov, V. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Charge ordering in the low-temperature triclinic structure of titanium oxide (Ti4O7) is investigated using the local density approximation (LDA)+U method. Although the total 3d charge separation is rather small, an orbital order parameter defined as the difference between t2g occupancies of Ti$^{3+}$ and Ti$^{4+}$ cations is large and gives direct evidence for charge ordering. Ti 4s and 4p states make a large contribution to the static "screening" of the total 3d charge difference. This effective charge screening leads to complete loss of the disproportionation between the charges at 3+ and 4+ Ti sites. The occupied t2g states of Ti$^{3+}$ cations are predominantly of $d_{xy}$ character and form a spin-singlet molecular orbital via strong direct antiferromagnetic exchange coupling between neighboring Ti(1) and Ti(3) sites, whereas the role of superexchange is found to be negligible.
description: 6 pages, 4 figures
Static spacetimes haunted by a phantom scalar field II: dilatonic charged solutions
Creators: name: Nozawa, Masato
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a method to generate static solutions in the Einstein-Maxwell system with a (phantom) dilaton field in $n(\ge 4)$-dimensions, based upon the symmetry of the target space for the nonlinear sigma model. Unlike the conventional Einstein-Maxwell-dilaton system, there appears a critical value of the coupling constant for a phantom dilaton field. In the noncritical case, the target space is $\mathbb R\times {\rm SL}(2,\mathbb R)/H$ with the maximal subgroup $H=\{{\rm SO}(2), {\rm SO}(1,1)\}$, whereas in the critical case the target space becomes a symmetric pp-wave and the corresponding Killing vectors form a non-semisimple algebra. In either case, we apply the formalism to charge up the neutral solutions and show the analytical expression for dilatonic charged versions of (i) the Fisher solution, (ii) the Gibbons solution, and (iii) the Ellis-Bronnikov solution. We discuss global structures of these solutions in detail. It turns out that some solutions contained in the Fisher and Gibbons classes possess the parallelly propagated (p.p) curvature singularities in the parameter region where all the scalar curvature invariants remain bounded. These p.p curvature singularities are not veiled by a horizon, thrusting them into physically untenable nakedly singular spacetimes. We also demonstrate that the dilatonic-charged Ellis-Bronnikov solution admits a parameter range under which the solution represents a regular wormhole spacetime in the two-sided asymptotically flat regions.
description: 2 figures, 1 table, 33 pages; v2: refs added, to appear in PRD
Wilkens, Erwin (Hrsg.), Christliche Ethik und Sicherheitspolitik: Beiträge zur Friedensdiskussion
Creators: name: Schweitzer, Wolfgang
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 32 Nr. 1 (1983): Ökumenische Rundschau, Band 32, Heft 1
The Attitude of Married Men towards Gender Division of Labor and their Experiences in Sharing Household Tasks with their Marital Spouses in Southern Ethiopia
Creators: name: Zewude, Bewunetu
name: Habtegiorgis, Tewodros
name: Melese, Belayneh
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2021

description: The objective of the present study was to assess the attitude of married men towards gender division of labor and their experiences in sharing household tasks with their marital spouses. Quantitative data were collected from randomly selected married men in Wolaita Sodo town, analyzed by SPSS software, and presented using both descriptive and inferential statistical techniques. It was found that respondents have positive sex role and family role orientations (mean=2.8, St.dev=.469). It was also found that majority (86.1%) of respondents reported to have the experience of sharing household tasks with their spouse. In addition, the patterns of gender division of labor among survey participants show that 37.2% disclosed to have an egalitarian division of both the household and the public tasks. Moreover, laundering of clothes has been a household task that most respondents (76.1%) commonly do, followed by cleaning a house (63.6%), feeding children (59.3%), and making shiro wot (55.4%). Conversely, baking enjera has been a household task that respondents least want to do (13%). Coefficients of regression regarding gender role attitude of respondents and their experiences of engaging in household tasks revealed that respondents’ attitude towards gender role attitude is significantly associated with their current number of children (R=.093; P<.001), their wives’ current employment status (R=.313; P<.001), and wife’s educational status (R= -.145; P<.01). Married men in Wolaita Sodo town have positive gender role orientations and high experiences of sharing household tasks with their spouses.
description: East African Journal of Social Sciences and Humanities, Vol. 6 No. 2 (2021)
Returns to Integrated Pest Management Research and Outreach for Soybean Aphid
Creators: name: Song, Feng
name: Swinton, Scott M.
name: Song, Feng
name: Swinton, Scott M.
Publisher: name: Unknown
Year: 2008
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Soybean aphid is a major invasive pest that has caused major yield loss and increased insecticide use in the United States since its discovery in 2000. Using the economic surplus approach, we estimate the economic benefits of U.S. research and outreach for integrated pest management (IPM) of soybean aphid. We calculate ex ante net benefits from adoption of an IPM action threshold (AT). The AT triggers insecticide application only if the value of predicted yield damage from pest scouting is expected to exceed the cost of pest control. Our research finds that gradual adoption of AT-based IPM over the 15 years since soybean aphid IPM research began in 2003 generates a projected economic net benefit of $1.3 billion, for an internal rate of return of 140%. Lower and upper bound sensitivity analysis brackets the estimated net benefit to U.S. consumers and soybean growers in the range of $0.6 to 2.6 billion in 2005 dollars. If a 10% rate of return is attributed to IPM applied research and outreach on soybean aphid, that would leave nearly $800 million to compensate prior basic IPM research. Using benefit functions from two prior studies of consumer willingness to pay to avoid pesticide risk, we find that the nonmarket environmental and human health benefits of reduced insecticide use due to adopting AT-based IPM are less than five percent of the baseline market value estimate of economic net benefit.
Artificial Intelligence for UAV-enabled Wireless Networks: A Survey
Creators: name: Lahmeri, Mohamed-Amine
name: Kishk, Mustafa A.
name: Alouini, Mohamed-Slim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Unmanned aerial vehicles (UAVs) are considered as one of the promising technologies for the next-generation wireless communication networks. Their mobility and their ability to establish line of sight (LOS) links with the users made them key solutions for many potential applications. In the same vein, artificial intelligence (AI) is growing rapidly nowadays and has been very successful, particularly due to the massive amount of the available data. As a result, a significant part of the research community has started to integrate intelligence at the core of UAVs networks by applying AI algorithms in solving several problems in relation to drones. In this article, we provide a comprehensive overview of some potential applications of AI in UAV-based networks. We also highlight the limits of the existing works and outline some potential future applications of AI for UAV networks.
Children and Screen Media Effects: Theoretical Underpinnings, Empirical Observations and Policy Implications
Creators: name: Gebru, Amanuel
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2021

description: The paper critically explores the body of research on screen media effects on children as an emerging frontier of scholarship. Screen media is used in reference to media that are both non-interactive (eg TV) and interactive (games) that present a variety of modalities including images, graphics, video, audio and text. Using narrative review as a strategy and based on core databases, media and pediatric resources, studies that encompassed observational research, randomised controlled trials, quasi-experimental trials, cohort studies, case-control studies and cross-sectional studies are critically analyzed in respect of categories of screen media issues and debates, first globally and then nationally. Whilst there are areas of consensus, the review shows that the media effects literature is also characterized by inconsistency of findings. The review further indicates that, although there is burgeoning literature on children by Ethiopian scholars, there is a dearth of child-focused screen technology related studies to be of help in policy formulation, protection and promotion of the wellbeing of Ethiopian children. To address the identified lacunae in the children and screen media research spectrum, directions for research are outlined to consider emerging screen media realities unfolding in Ethiopia and their effect on children at home and in school contexts. Further, it is proposed that the area of children and screen media deserves attention from policy makers and media authorities.
description: East African Journal of Social Sciences and Humanities, Vol. 6 No. 2 (2021)
title: 2. Turrets and milecastles between Burgh-by-Sands and Bowness-on-Solway.
Creators: name: Simpson, Frank Gerald
name: Hodgson, Katherine S
name: Richmond, Ian A
Publisher: name: Archaeology Data Service
Year: 2008

description: Transactions of the Cumberland & Westmorland Antiquarian & Archaeological Society, 52, 14-16
OILADA MAKTABGACHA YOSHDAGI BOLALARNI MEHNATSEVARLIK RUHIDA TARBIYALASH METODIKASINING ASOSLARI
Creators: name: Rustamova Sarvinoz G'ayrat qizi
name: Azamova Maloxat Najimovna
Publisher: name: Zenodo
Year: 2025

description: Maqolada oilada maktabgacha yoshdagi bolalarni mehnatsevarlik ruhida tarbiyalashning nazariy metodik asoslari tahlil qilinadi. Mehnatsevarlik — bolalarda mas’uliyat, mustaqil mehnatga intilish va jamoaviy faoliyatga qayg‘urishni shakllantiruvchi muhim tarbiyaviy omil hisoblanadi. Oilaviy tarbiya maktabgacha davrda mehnatsevarlik qobiliyatlarini mustahkamlashda asosiy vosita bo‘lib, unda o‘yin, kundalik uy vazifalari va ona ota namunasini ko‘rsatish usullari muhim ahamiyat kasb etadi. Maqolada mehnatsevarlikni rivojlantirish metodikasining prinsiplari, shakllari va usullari, shuningdek, oilada amaliy tavsiyalar keltiriladi.
Note on helicity amplitudes in D to V semileptonic decays
Creators: name: Fajfer, Svjetlana
name: Kamenik, Jernej
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the recent extraction of the helicity amplitudes for the D+ -> K*0bar mu+ nu decay, done by the FOCUS collaboration, we determine helicity amplitudes for the D+ -> K*0bar l nu, D+ -> rho0 l nu and Ds -> phi l nu semileptonic decays using the knowledge of the relevant form factors. The vector and axial form factors for D -> V l nu decays are parameterized by including contributions of charm meson resonances and using the HQET and SCET limits. In the case that the vector form factor receives contributions from two poles while axial form factors are dominated by a single pole for D+ -> K*0bar l nu, we obtain better agreement with the experimental result then when all of them are dominated by single poles.
description: 4 pages, 5 figures
A Chandra Study of the NGC7618/UGC12491 Major Group Merger at Apogee: Multiple Cold Fronts, Boxy Wings, Filaments, and Arc-shaped Slingshot Tails
Creators: name: Machacek, Marie E.
name: Jones, Christine
name: Kraft, Ralph P.
name: Forman, William R.
name: Roediger, Elke
name: Sheardown, Alex
name: Wan, Jenny T.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Analyses of major group mergers are key to understanding the evolution of large-scale structure in the Universe and the microphysical properties of the hot gas in these systems. We present imaging and spectral analyses of deep Chandra observations of hot gas structures formed in the major merger of the NGC 7618 and UGC 12491 galaxy groups and compare the observed hot gas morphology, temperatures, and abundances with recent simulations. The morphology of the observed multiple cold front edges and boxy wings are consistent with those expected to be formed by Kelvin-Helmholtz instabilities and gas sloshing in inviscid gas. The arc-shaped slingshot tail morphologies seen in each galaxy suggest that the dominant galaxies are near their orbital apogee after having experienced at least one core passage at a large impact parameter.
description: 30 pages, 8 figures
An Investigation on the Perspectives of Political Economy: The Case of Ethiopian Broadcasting Corporation (EBC)
Creators: name: Addis, Ayele
name: Chanie, Adem
name: Steinulfsson, Terje
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2021

description: This article is framed to analyze the role of political economy in the African broadcast media in the case of Ethiopia. The research implemented a qualitative approach, mainly document analysis and in-depth interviews whereby a purposive sampling technique was used to generate relevant data. The data analysis technique for the study was drawn from the theoretical underpinnings of the theory of political economy. The research findings reveal that the Ethiopian government has exerted direct and indirect influence over the broadcast media through co-opting the political economy of the state, most of which were employing political-oriented regulatory bodies and regulations on the mainland. The political economy has shaped the media, and their interactions with the orientation of political structure, ideology, and function. As a result, the state broadcast media is facing the challenge of intrusion by the state. This study shows that efforts to reform state-owned public broadcast media into a public service broadcaster were never accomplished due to political economy factors, lack of political will, and tight regulatory environment. The main recommendations which are emphasized in the reform of the government’s political economy, party ideology, regulations, and regulatory bodies are imperative for the future free and public media development.
description: East African Journal of Social Sciences and Humanities, Vol. 6 No. 2 (2021)
Nonconvexity, efficiency and equilibrium in exhaustible resource depletion
Creators: name: Fisher, Anthony C.
name: Karp, Larry S.
name: Fisher, Anthony C.
name: Karp, Larry S.
Publisher: name: Unknown
Year: 1991
Subjects: subject: International Relations/Trade
subject: exhaustible resource
subject: nonconvex costs
subject: existence of competitive equilibrium

description: We reconsider the problem of inefficiency and nonexistence of a competitive equilibrium in exhaustible resource markets where extraction costs are nonconvex. The existence of a backstop technology (which induces a flat portion of the industry demand curve) restores both existence and efficiency, provided that the backstop price is sufficiently low. If firms face even a small amount of uncertainty regarding their rivals' stocks, a backstop technology is sufficient to restore existence of competitive equilibrium, even if the backstop price is very high. In this case, however, the competitive equilibrium is not efficient.
APAN: Asynchronous Propagation Attention Network for Real-time Temporal Graph Embedding
Creators: name: Wang, Xuhong
name: Lyu, Ding
name: Li, Mengjian
name: Xia, Yang
name: Yang, Qi
name: Wang, Xinwen
name: Wang, Xinguang
name: Cui, Ping
name: Yang, Yupu
name: Sun, Bowen
name: Guo, Zhenyu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Databases (cs.DB)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Limited by the time complexity of querying k-hop neighbors in a graph database, most graph algorithms cannot be deployed online and execute millisecond-level inference. This problem dramatically limits the potential of applying graph algorithms in certain areas, such as financial fraud detection. Therefore, we propose Asynchronous Propagation Attention Network, an asynchronous continuous time dynamic graph algorithm for real-time temporal graph embedding. Traditional graph models usually execute two serial operations: first graph computation and then model inference. We decouple model inference and graph computation step so that the heavy graph query operations will not damage the speed of model inference. Extensive experiments demonstrate that the proposed method can achieve competitive performance and 8.7 times inference speed improvement in the meantime.
description: In Proceedings of the 2021 International Conference on Management of Data (SIGMOD/PODS '21)
title: Prospective Agriculture 2013. Résumé.
Creators: name: Guyomard, Herve
name: Le Mouël, Chantal
name: Jez, Christine
name: Forslund, Agneta
name: Fournel, Estelle
Publisher: name: INRA
Year: 2008

description: Résumé de prospective parue dans Agriculture INRA, n°11.
Family Health Intervention for Improving Family Relationships among Selected Destitute Families in Ambo Town
Creators: name: Olana, Ejigu
name: Tefera, Belay
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2021

description: The objective of this study was to test the effect of family-based training on family relationships of destitute families in Ambo town, Ethiopia. Twelve families in the treatment group received a six-session relationship-based intervention aimed at improving family interaction (cohesion, communication, and conflict resolution). In this study, a mixed research design was used. As a result, a quasi-experimental design was employed to assess the intervention's effect, while an interview was done concurrently for data triangulation. Both the treatment and control groups were evaluated before and after the intervention. The effect of the intervention was investigated using one-way ANCOVA. The study found that after the intervention, the quality of the family relationship increased significantly among the treatment groups. In comparison to the control group, qualitative data showed that family cohesion, communication, problem-solving, and positive discipline were all higher in the treatment group, whereas negative family interactions and children's behavioural difficulties were reduced. The outcomes of the intervention showed that healthy family-based interventions that target low-income families and are implemented with few resources and in a short period of time provide significant results. Despite the fact that the intervention was only directed at one family member, it had a huge impact on the entire family. Finally, in order to enhance family and societal well-being, family-based intervention should be included in child development policy and practices.
description: East African Journal of Social Sciences and Humanities, Vol. 6 No. 2 (2021)
INTEGRAL, XMM-Newton and ESO/NTT identification of AX J1749.1-2733: an obscured and probably distant Be/X-ray binary
Creators: name: Heras, J. A. Zurita
name: Chaty, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: AX J1749.1-2733 is an unclassified transient X-ray source discovered during surveys by ASCA in 1993-1999. A multi-wavelength study in NIR, optical, X-rays and hard X-rays is undertaken in order to determine its nature. AX J1749.1-2733 is a new high-mass X-ray binary pulsar with an orbital period of 185.5+/-1.1 d (or 185.5/f with f=2,3 or 4) and a spin period of ~66 s, parameters typical of a Be/X-ray binary. The outbursts last ~12 d. A spin-down of 0.08+/-0.02 s/yr is also observed, very likely due to the propeller effect. The most accurate X-ray position is R.A. (2000) =17h49m06.8s and Dec. = -27deg32'32".5 (unc. 2"). The high-energy broad-band spectrum is well-fitted with an absorbed powerlaw and a high-energy cutoff with values NH=(20+/-1)e22 cm-2, Gamma=1.0+/-0.1, and Ecut=21+/-3 keV. The only optical/NIR candidate counterpart within the X-ray error circle has magnitudes of R=21.9+/-0.1, I=20.92+/-0.09, J=17.42+/-0.03, H=16.71+/-0.02, and Ks=15.75+/-0.07, which points towards a Be star located far away (> 8.5 kpc) and highly absorbed (NH~1.7e22 cm-2). The average 22-50 keV luminosity is (0.4-0.9)e36 erg/s during the long outbursts and 3e36 erg/s during the bright flare that occurred on MJD 52891 for an assumed distance of 8.5 kpc.
description: accepted A&A, 11 pages, 9 figures
Land Use Change and Ecosystem Valuation in North Georgia
Creators: name: Ngugi, Daniel
name: Mullen, Jeffrey D.
name: Bergstrom, John C.
name: Ngugi, Daniel
name: Mullen, Jeffrey D.
name: Bergstrom, John C.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Ecosystem
subject: Economic value
subject: North Georgia
subject: land use
subject: land use change
subject: fish
subject: water quality
subject: structural time series
subject: willingness to pay
subject: benefit transfer
subject: forecasting
subject: vector autoregression
subject: Upper Chattahoochee River

description: A model of land allocation at the aggregate watershed level was developed assuming profit/net benefit maximization under risk neutrality. The econometric land use model was analyzed as an equation by equation SURE model as all the independent variables were the same for both equations. In analyzing effect of land use change on water quality, we took year 2005 as our baseline and postulated three land use scenarios. We applied Benefit Transfer techniques to value water quality changes resulting from land use change and estimated lower bounds for WTP to improve water quality to meet the FCB criterion for drinking water supply and fishing waters and BOD (DO) criteria for fishing waters. Water quality modeling revealed that land use change would result in increased runoff, and associated increase in FCB and BOD/DO violations. But the BOD/DO violations could be curtailed by managing urban growth as evidenced absence of BOD violations in the managed growth scenario. Our study finds there may be problems of FCB under all postulated future land use scenarios. The findings also support existing literature that there are problems with FCB violation in the study area at the moment. Finally, it seems that the people of UCRB would be willing to pay a lower bound value between USD 15,785,740 and USD 16,141,230 per year to create and maintain quality standards for fishing and drinking water supply.
Lattice stability of ordered Au-Cu alloys in the warm dense matter regime
Creators: name: Ono, Shota
name: Kobayashi, Daigo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the warm dense regime, where the electron temperature is increased to the same order of the Fermi temperature, the dynamical stability of elemental metals depends on its electronic band structure as well as its crystal structure. It has been known that phonon hardening occurs due to an enhanced internal pressure caused by electron excitations as in close-packed simple metals, whereas phonon softening occurs at a specific point in the Brillouin zone as in body-centered cubic metals. Here, we investigate the dynamical stability of binary ordered alloys (Au and Cu) in the L1$_0$ and L1$_2$ structures. By performing first principles calculations on phonon dispersions, we demonstrate that warm dense Au-Cu systems show phonon hardening behavior except the lowest frequency phonon mode at point R of AuCu in the L1$_0$ structure. We show that when a phonon mode is stabilized by long-range interatomic interactions at ambient condition, such a phonon will be destabilized by the short-range nature of the warm dense matters.
description: 8 pages, 6 figures
Teachers’ Conceptions of Teaching English: Implications and Applications for EFL Policy and Practice
Creators: name: Fekadu, Rabuma
name: Tadesse, Dereje
name: Tadesse, Adinew
name: Getachew, Alemayehu
Publisher: name: East African Journal of Social Sciences and Humanities
Year: 2021

description: The study was conducted to explore EFL teachers’ conceptions of teaching English in secondary schools in eastern Hararghe, Ethiopia. Adopting phenomenological research approach, in-depth interview was conducted with nineteen purposively selected teachers from five schools. The analysis followed grounded approach to emerge categories from the data. In the findings, four categories of conceptions of teaching and two higher-order orientations were identified. Transmission of specific knowledge of language elements and exam-preparation are identified as the most predominant categories of conceptions and indicators of good teaching and success. Conversely, the two facilitative orientations to teaching and learning English language were the least reported categories. Hence, teachers’ conceptions of teaching are predominately teacher-centered/exam-focused than student-centered/meaning-making-focused. Unless their conceptions are changed, teachers in the traditional approach are unlikely to adopt active learning methods in English classroom which is against the EFL policy claims. In such context, as part of continuous professional development, constant reflective practices in which teachers reconceptualise and change their conceptions of teaching is a necessity.
description: East African Journal of Social Sciences and Humanities, Vol. 6 No. 2 (2021)