cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Performance-based selection of pathways for enhancing built infrastructure resilience
Creators: name: Joo, Mohammad Rafiq
name: Sinha, Ravi
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
subject: Science Policy

description: Built infrastructure systems must be resilient to disasters. After a disaster, its functionality has to evolve with significant uncertainties to restore pre-event condition. Innovative infrastructure design and management pathways can aid in sequencing possible pre- and post-disaster actions, incorporating flexibility into planning and decision-making to enhance resilience. Adoption of disaster risk reduction policies can benefit from accurate, comprehensive, and systematic probabilistic risk and resilience assessments. Such assessments, though not widely prevalent, help to understand the root causes of vulnerabilities and quantify their uncertainties. Therefore, they are prerequisites to identify and implement adaptation pathways for enhancing infrastructure resilience. To support identification and implementation of pathways approach, this study presents seismic resilience assessment incorporating functionality loss and pathways for subsequent recovery. An archetypical reinforced-concrete building, representing typical behavior of the building group used for critical functions, is considered under pre- and post-disaster preparedness, planning, and risk reduction options to develop deeper understanding of risks and selection of pathways. Resilience assessments are conducted based on performance-based earthquake engineering approach and considering uncertainties through Monte Carlo simulations. Both engineering and management interventions, such as improving non-structural component performance, eliminating post-disaster impedances, reducing repair delays, other management activities, and their combinations, are simulated under a common framework. The study quantifies how these measures can reduce losses, improve response, and enhance infrastructure resilience. Options for technical and management decision-making by various stakeholders to enhance resilience are also presented. The study advocates embracing the resiliency mindset and illustrates the benefits of multiple stakeholders for risk-informed decision-making.
Efficient Learning of Decision-Making Models: A Penalty Block Coordinate Descent Algorithm for Data-Driven Inverse Optimization
Creators: name: Gupta, Rishabh
name: Zhang, Qi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Computer Science and Game Theory (cs.GT)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Decision-making problems are commonly formulated as optimization problems, which are then solved to make optimal decisions. In this work, we consider the inverse problem where we use prior decision data to uncover the underlying decision-making process in the form of a mathematical optimization model. This statistical learning problem is referred to as data-driven inverse optimization. We focus on problems where the underlying decision-making process is modeled as a convex optimization problem whose parameters are unknown. We formulate the inverse optimization problem as a bilevel program and propose an efficient block coordinate descent-based algorithm to solve large problem instances. Numerical experiments on synthetic datasets demonstrate the computational advantage of our method compared to standard commercial solvers. Moreover, the real-world utility of the proposed approach is highlighted through two realistic case studies in which we consider estimating risk preferences and learning local constraint parameters of agents in a multiplayer Nash bargaining game.
The inner mass distribution of late-type spiral galaxies from SAURON stellar kinematic maps
Creators: name: Kalinova, Veselina
name: van de Ven, Glenn
name: Lyubenova, Mariya
name: Falcón-Barroso, Jesús
name: Colombo, Dario
name: Rosolowsky, Erik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We infer the central mass distributions within 0.4-1.2 disc scale lengths of 18 late-type spiral galaxies using two different dynamical modelling approaches - the Asymmetric Drift Correction (ADC) and axisymmetric Jeans Anisotropic Multi-gaussian expansion (JAM) model. ADC adopts a thin disc assumption, whereas JAM does a full line-of-sight velocity integration. We use stellar kinematics maps obtained with the integral-field spectrograph SAURON to derive the corresponding circular velocity curves from the two models. To find their best-fit values, we apply Markov Chain Monte Carlo (MCMC) method. ADC and JAM modelling approaches are consistent within 5% uncertainty when the ordered motions are significant comparable to the random motions, i.e, $\overline{v_ϕ}/σ_R$ is locally greater than 1.5. Below this value, the ratio $v_\mathrm{c,JAM}/v_\mathrm{c,ADC}$ gradually increases with decreasing $\overline{v_ϕ}/σ_R$, reaching $v_\mathrm{c,JAM}\approx 2 \times v_\mathrm{c,ADC}$. Such conditions indicate that the stellar masses of the galaxies in our sample are not confined to their disk planes and likely have a non-negligible contribution from their bulges and thick disks.
description: 44 pages, 60 figures, MNRAS accepted. The ADC-MCMC and JAM-MCMC python codes are available at: https://github.com/Kalinova/Dyn_models. The Multi-Gaussian Expansion (MGE) results are also available in the Appendix
Corporate Governance and its Effect on Financial Performance of the Ethiopian Private Commercial Banks
Creators: name: Harun, Abdurazak
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The paper takes a look at the effects of corporate governance on the financial performance of private commercial banks in Ethiopia. This exploratory study seeks to analyze the effect of different corporate governance mechanisms, particularly board gender diversity, directors' educational qualification, variety number of internal board sub-committee, meeting frequency of board, board ownership, regulations of legal reserve and liquidity and depositor influence, on the financial performance of 8 privately owned commercial banks of Ethiopia. And the study also controls the effect of private commercial banks size. The financial performance measure was Return on Asset (ROA). In order to achieve this objective, the study uses mixed research approach that is by adopting quantitative method research approach by combining documentary analysis of secondary data which was collected from the National Bank of Ethiopia (NBE). And capturing and administrating primary data using structured questionnaire which were completed by board secretary and delegated staffs as he/she is in a better position to comment on corporate governance affairs. Panel data covering 11 year period from 2005-2015 was analyzed and regression result with recommendation are displayed for the selected 8private commercial banks. The cross section fixed effect technique has been applied to find out the most significant variables from considered corporate governance variables. The findings indicated that board gender diversity and liquidity ratio does not have a significant effect on the financial performance of selected private commercial banks.Board members educational qualification is positively but insignificantly related with the financial performance.Similarly, variety number of internal board sub-committee, meeting frequency of board, and board ownership had statistically insignificant positive effect on private commercial bank financial performance. In additionprivate commercialbank size had statistically significant positive effect on private commercialbank financial performance. Legal reserve ratio and depositor influencehave negative significanceat 5% level and positive significanceat 10% level effect on the financial performance of selected private commercial banks. Keywords: Banking Sector, Private Commercial Bank Financial Performance, Corporate Governance Mechanisms.
Application of Origen2.1 in the decay photon spectrum calculation of spallation products
Creators: name: Hong, Shuang
name: Yang, Yong-Wei
name: Xu, Hu-Shan
name: Meng, Hai-Yan
name: Zhang, Lu
name: Liu, Zhao-Qing
name: Gao, Yu-Cui
name: Chen, Kang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Origen2.1 is a widely used computer code for calculating the burnup, decay, and processing of radioactive materials. However, the nuclide library of Origen2.1 is used for existing reactors like pressurized water reactor, to calculate the photon spectrum released by the decay of spallation products, we have made specific libraries for the ADS tungsten spallation target, based on the results given by a Monte Carlo code: FLUKA. All the data used to make the Origen2.1 libraries is obtained from Nuclear structure & decay Data (NuDat2.6). The accumulated activity of spallation products and the contribution of nuclides to photon emission are given in this paper.
description: To be published in Chinese Physics C
Is explicitly correlated double hybrid DFT advantageous for vibrational frequencies?
Creators: name: Mehta, Nisha
name: Santra, Golokesh
name: Martin, Jan M. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We have investigated the effect of F12 geminals on the basis set convergence of harmonic frequencies calculated using two representative double-hybrid density functionals, namely B2GP-PLYP and revDSD-PBEP86-D4. Like previously found for energetics [N. Mehta and J. M. L. Martin, \textit{J. Chem. Theor. Comput.} \textbf{18}, 5978--5991 (2022)] one sees an acceleration by two zeta steps, such that even the cc-pVDZ-F12 basis set is quite close to the complete basis set (CBS) limit. However, the basis set convergence problem is not as acute as for energetics, and compared to experimental harmonic frequencies, conventional orbital calculations with augmented triple zeta quality basis set are acceptably close to the CBS limit, and can be carried out using analytical second derivatives. An efficient implementation of double hybrid-F12 analytical derivatives would make the F12 approach attractive in the sense that even an $spd$ orbital basis set would be adequate. For the accurate revDSD-PBEP86-D4 functional, the role of differing local correlation terms (Perdew-Zunger 1981 vs. VWN5) in different electronic structure programs has been investigated: while optimal double hybrid parameters and performance statistics for energetics as well as frequencies differ slightly between the two implementations, these differences are insignificant for practical purposes.
description: Can. J. Chem., minor revision (WATOC 2022 special issue)
Mirror winding number and helical edge modes in honeycomb lattice with hopping-energy texture
Creators: name: Kariyado, Toshikaze
name: Hu, Xiao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We illustrate possible topological phases in honeycomb lattice with textures in electron hopping energy between nearest-neighboring sites and show that they are characterized by the mirror winding number intimately related to the chiral (or sublattice) symmetry. Analytic wave functions of zero-energy edge modes in ribbon geometry are provided, which are classified into even and odd sectors with respect to the mirror operation with the mirror plane perpendicular to the edge, and evolve into the topological helical edge states at finite momenta. Intriguingly our results demonstrate that in order to achieve the topological phase one can decorate the edge in a way adaptive to the bulk hopping texture. This paves a new way to tailoring graphene in the topological point of view.
description: 6 pages
How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models
Creators: name: Ricarte, Angelo
name: Johnson, Michael D.
name: Kovalev, Yuri Y.
name: Palumbo, Daniel C. M.
name: Emami, Razieh
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Event Horizon Telescope (EHT) Collaboration has successfully produced images of two supermassive black holes, enabling novel tests of black holes and their accretion flows on horizon scales. The EHT has so far published total intensity and linear polarization images, while upcoming images may include circular polarization, rotation measure, and spectral index, each of which reveals different aspects of the plasma and space-time. The next-generation EHT (ngEHT) will greatly enhance these studies through wider recorded bandwidths and additional stations, leading to greater signal-to-noise, orders of magnitude improvement in dynamic range, multi-frequency observations, and horizon-scale movies. In this paper, we review how each of these different observables informs us about the underlying properties of the plasma and the spacetime, and we discuss why polarimetric studies are well-suited to measurements with sparse, long-baseline coverage.
description: Submitted for Galaxies Special Issue "From Vision to Instrument: Creating a Next-Generation Event Horizon Telescope for a New Era of Black Hole Science"
Digital Capabilities and Self-efficacy (DCSE) Questionnaire
Creators: name: Limniou, Maria
Publisher: name: Zenodo
Year: 2020
Subjects: Questionnaire
Digital Capabilities
Digital Skills
Self-regulation

description: The aim of this questionnaire is to explore the connections of digital device usage, digital capabilities (JISC elements, cogntive dimension, technical dimension and social emotional dimension), employability awareness and self-regulation. The part of cognitive, technical and social emotional dimensions have been inspired by Ng's (2012) work Ng, W. (2012) Empowering Scientific Literacy Through Digital Literacy and Multiliteracies, Nova Science Publishers: New York.
Stabilization to trajectories for parabolic equations
Creators: name: Phan, Duy
name: Rodrigues, Sérgio S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 93D15, 93B52, 35K58

description: The feedback exponential stabilization to trajectories for semilinear parabolic equations in a given bounded domain is addressed. The controls take values in a finite-dimensional space and are supported in a small region. Both internal and boundary controls are considered.
description: 61 pages, 23 figures
A new era for the design of TRPV1 antagonists and agonists with the use of structural information and molecular docking of capsaicin-like compounds
Creators: name: Caballero, Julio
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: The design of TRPV1 antagonists and agonists has reached a new era since TRPV1 structures at near-atomic resolution are available. Today, the ligand-binding forms of several classical antagonists and agonists are known; therefore, the specific role of key TRPV1’s residues in binding of ligands can be elucidated. It is possible to place the well-defined pharmacophore of TRPV1 ligands, conformed by head, neck, and tail groups, in the right pocket regions of TRPV1. It will allow a more thorough use of molecular modelling methods to conduct more effective rational drug design protocols. In this work, important points about the interactions between TRPV1 and capsaicin-like compounds are spelled out, based on the known pharmacophore of the ligands and the already available TRPV1 structures. These points must be addressed to generate reliable poses of novel candidates and should be considered during the design of novel TRPV1 antagonists and agonists.
Social Work in the Digital Age
Creators: name: Fagan, Eilís
name: Grenen, Ellen
name: McGlynn, Michaela
Publisher: name: Unknown
Year: 2018

description: Social media is a growing and ever-changing method of communication that has a strong impact on the psychosocial well-being of today’s adolescents. Studies have found that social media can be detrimental to adolescent self-esteem, can be used to bully and manipulate others, and can exacerbate depressive symptoms. Furthermore, adolescents self-report utilizing social networking websites to find support, guidance, and community revolving around problematic behaviors such as self-harm and eating disorders. Social workers who treat this population should become familiar with the multitude of outlets in order to best support their clients. This paper draws from the authors’ experience with this population and the literature to date in order to establish the need for a social work prepared for the digital age.
Human Genome Project (HGP)
Creators: name: Saeed, Salman
Publisher: name: F1000 Research Limited
Year: 2023

description: Human Genome Project by Genetic Manipulation lecture for Agriculture, Biology, Botany, Zoology, Chemistry, Biotechnology, Microbiology, and Genetics Students by Salman Saeed Lecturer Botany University College of Management and Sciences Khanewal, Pakistan.
 About the Author: Salman Saeed
 Qualification: M.Sc. (Botany), M.Phil. (Biotechnology) from BZU Multan.
 M.Ed. & B.Ed. from GCU Faisalabad, Pakistan
Introduction to NCBI
Creators: name: Saeed, Salman
Publisher: name: F1000 Research Limited
Year: 2023

description: Introduction to NCBI by Genetic Manipulation lecture for Agriculture, Biology, Botany, Zoology, Chemistry, Biotechnology, Microbiology, and Genetics Students by Salman Saeed Lecturer Botany University College of Management and Sciences Khanewal, Pakistan.
 About the Author: Salman Saeed
 Qualification: M.Sc. (Botany), M.Phil. (Biotechnology) from BZU Multan.
 M.Ed. & B.Ed. from GCU Faisalabad, Pakistan
Searching for candidates of coalescing binary black holes formed through chemically homogeneous evolution in GWTC-3
Creators: name: Qin, Ying
name: Wang, Yuan-Zhu
name: Bavera, Simone S.
name: Wu, Shichao
name: Meynet, Georges
name: Wang, Yi-Ying
name: Hu, Rui-Chong
name: Zhu, Jin-Ping
name: Wu, Dong-Hong
name: Shu, Xin-Wen
name: Peng, Fang-Kun
name: Song, Han-Feng
name: Wei, Da-Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The LIGO, Virgo, and KAGRA (LVK) collaboration has announced 90 coalescing binary black holes (BBHs) with $p_{\rm astro} > 50\%$ to date, however, the origin of their formation channels is still an open scientific question. Given various properties of BBHs (BH component masses and individual spins) inferred using the default priors by the LVK, independent groups have been trying to explain the formation of the BBHs with different formation channels. Of all formation scenarios, the chemically homogeneous evolution (CHE) channel has stood out with distinguishing features, namely, nearly-equal component masses and preferentially high individual spins aligned with the orbital angular momentum. We perform Bayesian inference on the BBH events officially reported in GWTC-3 with astrophysically-predicted priors representing different formation channels of the isolated binary evolution (CEE: common-envelope evolution channel; CHE; SMT: stable mass transfer). Given assumed models, we report strong evidence for GW190517\_055101 being most likely to have formed through the CHE channel. Assuming the BBH events in the subsample are all formed through one of the isolated binary evolution channels, we obtain the lower limits on the local merger rate density of these channels at $11.45 ~\mathrm{Gpc^{-3}~yr^{-1}}$ (CEE), $0.18 ~\mathrm{Gpc^{-3}~yr^{-1}}$ (CHE), and $0.63 ~\mathrm{Gpc^{-3}~yr^{-1}}$ (SMT) at $90\%$ credible level.
description: 13 pages, 4 figures, 1 table
Spin excitations in the skymion host Cu2OSeO3
Creators: name: Tucker, G S
name: White, J S
name: Romhányi, J
name: Szaller, D
name: Kézsmárki, I
name: Roessli, B
name: Stuhr, U
name: Magrez, A
name: Groitl, F
name: Babkevich, P
name: Huang, P
name: Živković, I
name: Rønnow, H M
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have used inelastic neutron scattering to measure the magnetic excitation spectrum along the high-symmetry directions of the first Brillouin zone of the magnetic skyrmion hosting compound Cu$_2$OSeO$_3$. The majority of our scattering data are consistent with the expectations of a recently proposed model for the magnetic excitations in Cu$_2$OSeO$_3$, and we report best-fit parameters for the dominant exchange interactions. Important differences exist, however, between our experimental findings and the model expectations. These include the identification of two energy scales that likely arise due to neglected anisotropic interactions. This feature of our work suggests that anisotropy should be considered in future theoretical work aimed at the full microscopic understanding of the emergence of the skyrmion state in this material.
description: 5 pages, 6 figures
Limb dynamics during the swing phase of walking
Creators: name: Tyler, David William.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Ground-state properties of even and odd Magnesium isotopes in a symmetry-conserving approach
Creators: name: Borrajo, Marta
name: Egido, J. Luis
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a self-consistent theory for odd nuclei with exact blocking and particle number and angular momentum projection. The demanding treatment of the pairing correlations in a variation-after-projection approach as well as the explicit consideration of the triaxial deformation parameters in a projection after variation method, together with the use of the finite-range density-dependent Gogny force, provides an excellent tool for the description of odd-even and even-even nuclei. We apply the theory to the Magnesium isotopic chain and obtain an outstanding description of the ground-state properties, in particular binding energies, odd-even mass differences, mass radii and electromagnetic moments among others.
description: 8 pages, 6 figures, accepted for publication in Phys. Let. B
Can Ethiopian Companies Meet the Listing Requirements of African Stock Exchanges?
Creators: name: Bayisasahu, Abera
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: Ethiopian companies are not benefiting from listing on stock exchanges because there is no stock exchange in Ethiopia. Foreign listing is an alternative solution to this problem. Thus, this study examines whether or not Ethiopian companies meet the listing requirements of African stock exchanges. The study also assessed the characteristics of Ethiopian companies (their strengths and weaknesses) in relation to stock exchanges listing requirements so as to determine the availability of qualified companies for the establishment of a stock exchange in Ethiopia. The determinants of listing requirements and listings are also investigated in this study. The study adopts a mixed methods research approach. Specifically, the study uses surveys of 17 Ethiopian share companies that are established after 1994 by offering shares to the public via IPO and that has a minimum of two years operating history using closed ended self administered questionnaires to collect a quantitative data. In addition, the study uses surveys of 15 African stock exchanges that have listing requirements on their websites in English languages. The study also analyzed the qualitative listing requirements of African countries stock exchanges (OECD 2004 Corporate Governance Principles) by comparing it with the Ethiopian companies' corporate governance law. The results of this combined research methodology reveal that Ethiopian companies can be listed in other African countries' stock exchanges and get benefited from listing. There are also qualified companies for the establishment of stock exchange in Ethiopia
Yuri Safarov (1958-2015)
Creators: name: Vassiliev, Dmitri
Publisher: name: arXiv
Year: 2016
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics
subject: 01A70

description: This is the editor's preface to the special issue of Journal of Spectral Theory, in memory of Yuri Safarov.
Higgs decay to charmonia and the charm-quark Yukawa coupling
Creators: name: Han, Tao
name: Leibovich, Adam K.
name: Ma, Yang
name: Tan, Xiao-Ze
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: After the great triumph of the Higgs discovery in 2012, the next target at the energy frontier will be to study the Higgs properties and to search for the next scale beyond the SM. Experimentally, the $H\to c \bar{c}$ channel would be extremely difficult to dig out because of both the weak Yukawa coupling and the daunting SM di-jet background. We propose to test the charm-quark Yukawa coupling at the LHC and future hadron colliders with the Higgs boson decay to $J/ψ$ via the charm-quark fragmentation. Using the non-relativistic quantum chromodynamics (NRQCD), we study the charmonia production via the Higgs boson decay channel $ H \to c \ \bar{c} + J/ψ$(or $ η_c $), where both the color-singlet and color-octet contributions are considered. Our result opens another door to improve determinations at the LHC of the Higgs Yukawa couplings: the final state from this decay mode is quite distinctive with $J/ψ\to e^+e^-,\, μ^+μ^-$ and the branching fraction is enhanced by the charm-quark fragmentation mechanism.
description: 6 pages, 5 figures, contribution to proceedings of 41st International Conference on High Energy physics - ICHEP2022
Hydrodynamics of gas-dispersion from two-phase swirl nozzles .
Creators: name: Koh, Peter Teng Lew.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
A review of laser scanning for geological and geotechnical applications in underground mining
Creators: name: Singh, Sarvesh Kumar
name: Banerjee, Bikram Pratap
name: Raval, Simit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Laser scanning can provide timely assessments of mine sites despite adverse challenges in the operational environment. Although there are several published articles on laser scanning, there is a need to review them in the context of underground mining applications. To this end, a holistic review of laser scanning is presented including progress in 3D scanning systems, data capture/processing techniques and primary applications in underground mines. Laser scanning technology has advanced significantly in terms of mobility and mapping, but there are constraints in coherent and consistent data collection at certain mines due to feature deficiency, dynamics, and environmental influences such as dust and water. Studies suggest that laser scanning has matured over the years for change detection, clearance measurements and structure mapping applications. However, there is scope for improvements in lithology identification, surface parameter measurements, logistic tracking and autonomous navigation. Laser scanning has the potential to provide real-time solutions but the lack of infrastructure in underground mines for data transfer, geodetic networking and processing capacity remain limiting factors. Nevertheless, laser scanners are becoming an integral part of mine automation thanks to their affordability, accuracy and mobility, which should support their widespread usage in years to come.
Determinants of Dividend Policy of Insurance Companies in Ethiopia
Creators: name: Nuredin, Muhammed
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2012

description: This study seeks to find the determinants of dividend policy of insurance companies in Ethiopia. In order to achieve this objective, the study uses mixed research approach. Panel data covering nine-year period from 2003 – 2011 are analyzed for nine insurance companies. Also in-depth interview is conducted with company officials. The study analyses a range of determinants of dividend policy: Profitability, growth, Liquidity, Size and Leverage of the firm. The random effects technique has been applied to find out the most significant variables used by the insurance companies in making the dividend decisions. The results show that dividend decisions are relevant and profitability and liquidity are the statistically significant factors which positively influence dividend policy of insurance companies in Ethiopia. On the other hand, growth influences dividend policy negatively and significantly. Contrary to theoretical prediction, the study finds that size and leverage are insignificant in influencing the dividend policy of insurance companies in Ethiopia. The study provides evidence that profitability, liquidity and growth are the most important factors that affect dividend policy of insurance companies in Ethiopia. So, Ethiopian insurance companies' managers should give consideration to profitability, liquidity and growth when they set dividend policy
Photoconductivity of few-layered p-WSe2 phototransistors via multi-terminal measurements
Creators: name: Pradhan, Nihar R.
name: Garcia, Carlos
name: Holleman, Joshua
name: Rhodes, Daniel
name: Parkera, Chason
name: Talapatra, Saikat
name: Terrones, Mauricio
name: Balicas, Luis
name: McGill, Stephen A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently, two-dimensional materials and in particular transition metal dichalcogenides (TMDs) were extensively studied because of their strong light-matter interaction and the remarkable optoelectronic response of their field-effect transistors (FETs). Here, we report a photoconductivity study from FETs built from few-layers of p-WSe2 measured in a multi-terminal configuration under illumination by a 532 nm laser source. The photogenerated current was measured as a function of the incident optical power, of the drain-to-source bias and of the gate voltage. We observe a considerably larger photoconductivity when the phototransistors were measured via a four-terminal configuration when compared to a two-terminal one. For an incident laser power of 248 nW, we extract 18 A/W and ~4000% for the two-terminal responsivity (R) and the concomitant external quantum efficiency (EQE) respectively, when a bias voltage Vds = 1 V and a gate voltage Vbg = 10 V are applied to the sample. R and EQE are observed to increase by 370% to ~85 A/W and ~20000% respectively, when using a four-terminal configuration. Thus, we conclude that previous reports have severely underestimated the optoelectronic response of transition metal dichalcogenides, which in fact reveals a remarkable potential for photosensing applications.
description: 6 Figures and Supporting Informations, (Accepted in "2D Materials")
Proposal for Grand Instrument access WINNER D1.3
Creators: name: Strandbakke, Ragnar
name: Vøllestad, Einar
name: Marie-Laure Fontaine
Publisher: name: Zenodo
Year: 2022
Subjects: Proton Ceramic Conductor, model electrode, EIS, XPS

description: This deliverable reports on the proposal developed by UiO and SINTEF to access Grand Instrument, as defined in WINNER plan. The targeted study is summarized here. The near-ambient pressure scanning photoelectron microscope (NAP-SPEM) setup at Elettra will be used to perform operando studies of model electrodes based on BaGd0.3La0.7Co2O6-δ (BGLC), which is one of the best air/steam electrode materials available for Proton Ceramic Electrochemical Cells. The reduction and oxidation of H2O and O2 happen at the gas-electrode-electrolyte triple-phase boundary (tpb) and at the BGLC surface. The extension of the reaction zone from the tpb and outward on the electrode surface is not yet known. The red-ox reactions are facilitated by Co, which provide electrons and electron holes to the cathodic and anodic half-reactions, respectively. Thus, Co is expected to deviate from its +3 oxidation state at the surface during operation. Interdigitated model electrodes of BGLC deposited on a BaZr0.4Ce0.4Y0.2O3 (BZCY) electrolyte will be studied. The oxidation state of Co across 70-100 μm wide electrode strips will be monitored by NAP-SPEM while performing Electrochemical Impedance Spectroscopy (EIS) under anodic and cathodic bias in a mixture of O2 and H2O gas at elevated temperatures (400 – 600°C). The reaction zone will be mapped based on Co oxidation state, and while the electrostatic potential will give a uniform distribution of Co-species over the electrode, we predict a gradual change over the reaction zone. Our hypothesis is that the extension of the electrochemically active area of the electrode is changed as a function of applied current density, which calls for analysis tools with the spatial resolution of the SPEM technique. The potential outcome of the experiments will be a ground-breaking progression in the understanding of high temperature electrodes, electrode reactions and -materials.
Diameter and Automorphisms of Gelfand-Tsetlin Polytopes
Creators: name: Gao, Yibo
name: Krakoff, Benjamin
name: Yang, Lisa
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We determine the diameter of the 1-skeleton and the combinatorial automorphism group of any Gelfand-Tsetlin polytope GT$_λ$ associated to an integer partition $λ.$
Neural manifolds in V1 change with top-down signals from V4 targeting the foveal region
Creators: name: Morales-Gregorio, Aitor
name: Kurth, Anno C.
name: Ito, Junji
name: Kleinjohann, Alexander
name: Barthélemy, Frédéric V.
name: Brochier, Thomas
name: Grün, Sonja
name: van Albada, Sacha J.
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: bioRxiv (2023). doi:10.1101/2023.06.14.544966
description: High-dimensional brain activity is often organised into lower-dimensional neural manifolds. However, the neural manifolds of the visual cortex remain understudied. Here, we study large-scale multielectrode electrophysiological recordings of macaque (Macaca mulatta) areas V1, V4 and DP with a high spatio-temporal resolution. We find, for the first time, that the population activity of V1 contains two separate neural manifolds, which correlate strongly with eye closure (eyes open/closed) and have distinct dimensionalities. Moreover, we find strong top-down signals from V4 to V1, particularly to the foveal region of V1, which are significantly stronger during the eyes-open periods, a previously unknown effect. Finally, in silico simulations of a balanced spiking neuron network qualitatively reproduce the experimental findings. Taken together, our analyses and simulations suggest that top-down signals modulate the population activity of V1, causing two distinct neural manifolds. We postulate that the top-down modulation during the eyes-open periods prepares V1 for fast and efficient visual responses, resulting in a type of visual stand-by mode.
description: Published by bioRxiv
Deep Active Learning for Computer Vision: Past and Future
Creators: name: Takezoe, Rinyoichi
name: Liu, Xu
name: Mao, Shunan
name: Chen, Marco Tianyu
name: Feng, Zhanpeng
name: Zhang, Shiliang
name: Wang, Xiaoyu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: As an important data selection schema, active learning emerges as the essential component when iterating an Artificial Intelligence (AI) model. It becomes even more critical given the dominance of deep neural network based models, which are composed of a large number of parameters and data hungry, in application. Despite its indispensable role for developing AI models, research on active learning is not as intensive as other research directions. In this paper, we present a review of active learning through deep active learning approaches from the following perspectives: 1) technical advancements in active learning, 2) applications of active learning in computer vision, 3) industrial systems leveraging or with potential to leverage active learning for data iteration, 4) current limitations and future research directions. We expect this paper to clarify the significance of active learning in a modern AI model manufacturing process and to bring additional research attention to active learning. By addressing data automation challenges and coping with automated machine learning systems, active learning will facilitate democratization of AI technologies by boosting model production at scale.
description: Accepted by APSIPA Transactions on Signal and Information Processing
Maxwell equations in homogeneous spaces with solvable groups of motions
Creators: name: Obukhov, V. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 83C20 Classes of solutions, algebraically special solutions, metrics with symmetries

description: The classification of exact solutions of Maxwell vacuum equations for the case when the electromagnetic fields and metrics of homogeneous spaces are invariant with respect to the motion group G(VII) is completed. All non-equivalent exact solutions of Maxwell vacuum equations for electromagnetic fields and spaces with such symmetry have been obtained. The vectors of the canonical frame of a homogeneous space of type VII according to the Bianchi classification, and the electromagnetic field potentials have been found.
description: 10 pages. arXiv admin note: text overlap with arXiv:2204.07031
Risk Management Practice of Ethiopian Commercial Banks
Creators: name: Fekadeselassie, Tsion
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: The aim of this paper is to analyze the effectiveness of risk management practice of commercial banks operating in Ethiopia. Information was obtained from 15 purposely-sampled commercial banks by adopting concurrent mixed research design. Open and closed-ended questionnaires were administered to 86 respondents from selected commercial banks. The questionnaires covered key aspects of risk management including the importance of risk management practices, risk identification, risk monitoring and nature of risk management practices. The main conclusions of the paper are: risk managers perceive risk management as critical to their banks performance; the types of risks causing the greatest exposures are credit risk, operational risk, liquidity risk, interest rate risk and foreign exchange risk; there was a reasonable level of success with current risk management practices and, banks are utilizing some of the approaches/techniques traditionally used to manage risks. Overall, the findings suggest that banks operating in Ethiopia are indeed risk-focused. Some recommendations were made and prominent amongst them were that banks should give emphasis on staff training in the area of risk management and they must make risk visible, measurable and manageable and ensure a meaningful risk culture throughout all processes and activities. Key words: Commercial Banks, Risk Management, and Risk Management Practices
The Fermi Paradox revisited: Technosignatures and the Contact Era
Creators: name: Wandel, Amri
Publisher: name: arXiv
Year: 2022
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: A new solution to the Fermi Paradox is presented: probes or visits from putative alien civilizations have a very low probability until a civilization reaches a certain age (called the Contact Era) after the onset of radio communications. If biotic planets are common, putative advanced civilizations may preferentially send probes to planets with technosignatures, such as radio broadcastings. The contact probability is defined as the chance to find a nearby civilization located close enough so that it could have detected the earliest radio emissions (the radiosphere) and sent a probe that would reach the Solar System at present. It is found that the current contact probability for Earth is very low unless civilizations are extremely abundant. Since the radiosphere expands with time, so does the contact probability. The Contact Era is defined as the time (since the onset of radio transmissions) at which the contact probability becomes of order unity. At that time alien probes (or messages) become more likely. Unless civilizations are highly abundant, the Contact Era is shown to be of the order of a few hundred to a few thousand years and may be applied not only to physical probes but also to transmissions (i.e. SETI). Consequently, it is shown that civilizations are unlikely to be able to inter-communicate unless their communicative lifetime is at least a few thousand years.
description: 12 pages, 5 figures, accepted for publication in the Astrophysical Journal
A Structural Equation Modeling of The Effects of Logistics ServiceQuality on The Customer Satisfaction, Trust and Loyaltyin E-commerce Business
Creators: name: Kanpitcha Patthanakitthanachot
Publisher: name: Business Administration Kasetsart University
Year: 2022
Subjects: LogisticServiceQuality,Trust,Satisfaction,Loyalty

description: Kasetsart Applied Business Journal, 16, 14, (29-48)
A Machine Learning Classifier for Fast Radio Burst Detection at the VLBA
Creators: name: Wagstaff, Kiri L.
name: Tang, Benyang
name: Thompson, David R.
name: Khudikyan, Shakeh
name: Wyngaard, Jane
name: Deller, Adam T.
name: Palaniswamy, Divya
name: Tingay, Steven J.
name: Wayth, Randall B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Time domain radio astronomy observing campaigns frequently generate large volumes of data. Our goal is to develop automated methods that can identify events of interest buried within the larger data stream. The V-FASTR fast transient system was designed to detect rare fast radio bursts (FRBs) within data collected by the Very Long Baseline Array. The resulting event candidates constitute a significant burden in terms of subsequent human reviewing time. We have trained and deployed a machine learning classifier that marks each candidate detection as a pulse from a known pulsar, an artifact due to radio frequency interference, or a potential new discovery. The classifier maintains high reliability by restricting its predictions to those with at least 90% confidence. We have also implemented several efficiency and usability improvements to the V-FASTR web-based candidate review system. Overall, we found that time spent reviewing decreased and the fraction of interesting candidates increased. The classifier now classifies (and therefore filters) 80-90% of the candidates, with an accuracy greater than 98%, leaving only the 10-20% most promising candidates to be reviewed by humans.
description: Published in PASP
Mass transport effects in packed columns of insolubilized enzymes
Creators: name: Keogh, Andrew Joseph.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Electro-Mechanical Transition in Quantum dots
Creators: name: Micchi, G
name: Avriller, Rémi
name: Pistolesi, F
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The strong coupling between electronic transport in a single-level quantum dot and a capacitively coupled nano-mechanical oscillator may lead to a transition towards a mechanically-bistable and blocked-current state. Its observation is at reach in carbon-nanotube state-of-art experiments. In a recent publication [Phys. Rev. Lett. 115, 206802 (2015)] we have shown that this transition is characterized by pronounced signatures on the oscillator mechanical properties: the susceptibility, the displacement fluctuation spectrum and the ring-down time. These properties are extracted from transport measurements, however the relation between the mechanical quantities and the electronic signal is not always straightforward. Moreover the dependence of the same quantities on temperature, bias or gate voltage, and external dissipation has not been studied. The purpose of this paper is to fill this gap and provide a detailed description of the transition. Specifically we find: (i) The relation between the current-noise and the displacement spectrum. (ii) The peculiar behavior of the gate-voltage dependence of these spectra at the transition. (iii) The robustness of the transition towards the effect of external fluctuations and dissipation.
Assessment of Erp Project Benefits and Barriers in Post Implementation Stage: the Case of Ethio Telecom Case Study
Creators: name: Jemal, Abdi
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: In recent years, most developing countries companies implement integrated software to create smooth inter-organization integration, get competitive context of business environment, hold customer satisfaction, produce real time report, provide user satisfaction as operating the system, and getting output from the system. ERP is one of complex information systems that integrate the data of all business areas within the organization. Many researcher identifies varies factors which contribute for the ERP implementation and post implementation phase failure. The purpose of this study would be First, to assess the potential benefit and barriers that can affect the successful exploitation of ERP system in Ethiopian company. Second, to list which categories of benefits and barriers require more attention to maintain success at post implementation phase? A case study designed with quantitative method, Likert type data collected from 295 properly sampled participants and descriptive statistic were used to analyze each factors. The results found all benefit and except there barriers factors the rest barriers given consideration by the respondent but some were underestimated compared to relevant literature. The result also shows the benefits realized and barriers faced composed of all categories. Therefore, as the previous relevant study this research also concludes that both benefits and barriers are significant at post implementation stage. Key words: ERP, user satisfaction, benefit, risk and barriers