cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Influence of multiorbitals and anisotropic Coulomb interactions on isotope effect coefficient in doped Fe-based superconductors
Creators: name: Rani, Luxmi
name: Ajay
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The present work describes the theoretical analysis of isotope effect coefficient as a function of transition temperature in two orbital per site model Hamiltonian in iron based superconducting system. The expression of isotope effect coefficient has been computed numerically and self-consistently by employing Green's function technique within the BCS-mean-field approximation. It is observed that the isotope effect coefficient increases with the increase of the hybridization while with the increase in Coulomb interaction it starts decreasing. On increasing the carrier density per site in two orbital per site iron pnictide system, isotope effect coefficient ($α$) exhibits large values (much higher than BCS limit) at lower temperatures. While in the underdoped case, isotope effect coefficient shows minimum value in superconducting states of the iron based systems. Furthermore, it has been found that the large value of the isotope effect coefficient is the indication of the fact that the contribution of phonon alone is inadequate as the origin of superconductivity in these systems. Finally, the obtained theoretical results have been compared with experimental and existing theoretical observations in iron based superconductors.
description: 21 pages, 4 figures
The interaction of intense ultrashort laser pulses with cryogenic He jets
Creators: name: Shihab, M.
name: Bornath, T.
name: Redmer, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study the interaction of intense ultrashort laser pulses with cryogenic He jets using 2d/3v relativistic Particle-in-Cell simulations (XOOPIC). Of particular interest are laser intensities $(10^{15}-10^{20})$ W/cm$^2$, pulse lengths $\le 100$ fs, and the frequency regime $\sim 800$ nm for which the jets are initially transparent and subsequently not homogeneously ionized. Pulses $\ge 10^{16}$ W/cm$^2$ are found to drive ionization along the jet and outside the laser spot, the ionization-front propagates along the jet at a fraction of the speed of light. Within the ionized region, there is a highly transient field, which may be interpreted as two-surface wave decay and as a result of the charge-neutralizing disturbance at the jet-vacuum interface. The ionized region has solid-like densities and temperatures of few to hundreds of eV, i.e., warm and hot dense matter regimes. Such extreme conditions are relevant for high-energy densities as found, e.g., in shock-wave experiments and inertial confinement fusion studies. The temporal evolution of the ionization is studied considering theoretically a pump-probe x-ray Thomson scattering (XRTS) scheme. We observe plasmon and non-collective modes that are generated in the jet, and their amplitude is proportional to the ionized volume. Our theoretical findings could be tested at free-electron laser facilities such as FLASH and the European XFEL (Hamburg) and the LCLS (Stanford).
Striations in the Taurus molecular cloud: Kelvin-Helmholtz instability or MHD waves?
Creators: name: Heyer, M.
name: Goldsmith, P. F.
name: Yildiz, U. A.
name: Snell, R. L.
name: Falgarone, E.
name: Pineda, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The origin of striations aligned along the local magnetic field direction in the translucent envelope of the Taurus molecular cloud is examined with new observations of 12CO and 13CO J=2-1 emission obtained with the 10~m submillimeter telescope of the Arizona Radio Observatory. These data identify a periodic pattern of excess blue and redshifted emission that is responsible for the striations. For both 12CO and 13CO, spatial variations of the J=2-1 to J=1-0 line ratio are small and are not spatially correlated with the striation locations. A medium comprised of unresolved CO emitting substructures (cells) with a beam area filling factor less than unity at any velocity is required to explain the average line ratios and brightness temperatures. We propose that the striations result from the modulation of velocities and the beam filling factor of the cells as a result of either the Kelvin-Helmholtz instability or magnetosonic waves propagating through the envelope of the Taurus molecular cloud. Both processes are likely common features in molecular clouds that are sub-Alfvenic and may explain low column density, cirrus-like features similarly aligned with the magnetic field observed throughout the interstellar medium in far-infrared surveys of dust emission.
description: 11 pages, 4 figures. Accepted for publication in MNRAS
3D sensors for the HL-LHC
Creators: name: Furelos, D. Vázquez
name: Carulla, M.
name: Cavallaro, E.
name: Förster, F.
name: Grinstein, S.
name: Lange, J.
name: Paz, I. López
name: Manna, M.
name: Pellegrini, G.
name: Quirion, D.
name: Terzo, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In order to increase its discovery potential, the Large Hadron Collider (LHC) accelerator will be upgraded in the next decade. The high luminosity LHC (HL-LHC) period demands new sensor technologies to cope with increasing radiation fluences and particle rates. The ATLAS experiment will replace the entire inner tracking detector with a completely new silicon-only system. 3D pixel sensors are promising candidates for the innermost layers of the Pixel detector due to their excellent radiation hardness at low operation voltages and low power dissipation at moderate temperatures. Recent developments of 3D sensors for the HL-LHC are presented.
description: 8 pages, 5 figures, International Workshops on Radiation Imaging Detectors 2016
Client/server database servers comparison & evaluation
Creators: name: Thakur, Pradeep.
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.
Micromechanics and dislocation theory in anisotropic elasticity
Creators: name: Lazar, Markus
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mathematical Physics (math-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this work, dislocation master-equations valid for anisotropic materials are derived in terms of kernel functions using the framework of micromechanics. The second derivative of the anisotropic Green tensor is calculated in the sense of generalized functions and decomposed into a sum of a $1/R^3$-term plus a Dirac $δ$-term. The first term is the so-called "Barnett-term" and the latter is important for the definition of the Green tensor as fundamental solution of the Navier equation. In addition, all dislocation master-equations are specified for Somigliana dislocations with application to 3D crack modeling. Also the interior Eshelby tensor for a spherical inclusion in an anisotropic material is derived as line integral over the unit circle.
description: 23 pages, 2 figures
Kalibrierung von Kraftmessgeräten : Richtlinie DKD-R 3-3, Revision 1
Creators: name: Müller, Heiko
name: Rehefeld, Jörg
name: Röske, Dirk
name: Schwind, Daniel
name: Stenner, Lioba
Publisher: name: Physikalisch-Technische Bundesanstalt (PTB)
Year: 2025
Subjects: DKD-Richtlinie
Kraftmessgeräte
Kalibrierung
DIN EN ISO 376
EURAMET cg-4

description: Diese Richtlinie gilt für statische Belastungsverläufe. Neben den üblichen Kalibrierabläufen mit drei Einbaustellungen werden auch vereinfachte Abläufe beschrieben, die den Aufwand auf ein messtechnisch vertretbares Mindestmaß und damit die Kosten reduzieren. Dazu sind bestimmte Voraussetzungen, wie die Anforderungen internationaler Regeln zur Bestimmung der Messunsicherheit, zu erfüllen. Über den in dieser Richtlinie beschriebenen Aufwand kann der Anwender hinausgehen, er darf ihn jedoch nicht unterschreiten. Die Richtlinie erlaubt, praxisgerechte Kalibrierabläufe und Auswertungen umzusetzen. Grundsätzlich können vereinfachte Kalibrierabläufe nicht zu kleineren Messunsicherheiten führen als entsprechende Kalibrierungen desselben Kalibriergegenstandes nach aufwendige­ren Verfahren (z. B. DIN EN ISO 376). Bei der Anwendung verkürzter Kalibrierabläufe ist zu beachten, dass bei hochwertigen Kraftmessgeräten durch die erhöhte Messunsicherheit ggf. keine Konformität mit (Hersteller-) Spezifikationen festgestellt werden kann. In dieser Richtlinie werden keine Klassifizierungen mehr beschrieben. Diese Richtlinie gilt für alle Kraftmessgeräte, bei denen die Kraft über die elastische Verformung eines Körpers ermittelt wird. Sie kann auch für Kraftaufnehmer allein angewendet werden. Diese Richtlinie darf nur für Kraftmessgeräte angewendet werden, die in zu- und abnehmender Belastung jeweils in mindestens drei Kraftstufen kalibriert werden können.
Consistent parameter fixing in the quark-meson model with vacuum fluctuations
Creators: name: Carignano, Stefano
name: Buballa, Michael
name: Elkamhawy, Wael
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We revisit the renormalization prescription for the quark-meson model in an extended mean-field approximation, where vacuum quark fluctuations are included. At a given cutoff scale the model parameters are fixed by fitting vacuum quantities, typically including the sigma-meson mass $m_σ$ and the pion decay constant $f_π$. In most publications the latter is identified with the expectation value of the sigma field, while for $m_σ$ the curvature mass is taken. When quark loops are included, this prescription is however inconsistent, and the correct identification involves the renormalized pion decay constant and the sigma pole mass. In the present article we investigate the influence of the parameter-fixing scheme on the phase structure of the model at finite temperature and chemical potential. Despite large differences between the model parameters in the two schemes, we find that in homogeneous matter the effect on the phase diagram is relatively small. For inhomogeneous phases, on the other hand, the choice of the proper renormalization prescription is crucial. In particular, we show that if renormalization effects on the pion decay constant are not considered, the model does not even present a well-defined renormalized limit when the cutoff is sent to infinity.
description: 13 pages, 4 figures
Comparisons between IP/ATM integration and the next generation IP (IPv6) for QoS support
Creators: name: Ooi, Poh Ling.
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.
Noise modeling and analysis of an IMU-based attitude sensor: improvement of performance by filtering and sensor fusion
Creators: name: Nirmal, K.
name: Sreejith, A. G.
name: Mathew, Joice
name: Sarpotdar, Mayuresh
name: Suresh, Ambily
name: Prakash, Ajin
name: Safonova, Margarita
name: Murthy, Jayant
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We describe the characterization and removal of noise present in the Inertial Measurement Unit (IMU) MPU-6050. This IMU was initially used in an attitude sensor (AS) developed in-house, and subsequently implemented in a pointing and stabilization platform developed for small balloon-borne astronomical payloads. We found that the performance of the IMU degrades with time due to the accumulation of different errors. Using the Allan variance analysis method, we identified the different components of noise present in the IMU and verified the results using a power spectral density analysis (PSD). We tried to remove the high-frequency noise using smoothing filters, such as moving average filter and Savitzky-Golay filter. Although we did manage to filter some of the high-frequency noise, the performance of these filters was not satisfactory for our application. We found the distribution of the random noise present in the IMU using a probability density analysis, and identified the noise to be white Gaussian in nature which we successfully removed by a Kalman filter in real time.
description: 10 pages, 9 figures, presented at SPIE Astronomical Telescopes + Instrumentation Symposium, 26 June-1 July 2016, Edinburgh, United Kingdom
"Factors Constraining the Growth and Survival of Micro and Small Enterprises in Burayu"
Creators: name: Jiru, Abiyu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: Micro and Small Enterprises (MSEs) play an important economic role in many countries and recognized as an important vehicles of economic diversification, employment creation, income generation and distribution, and poverty alleviation. MSE occupy a prominent position in the development agenda of many developing countries like Ethiopia. Currently, in Ethiopia, the Government has been promoting the development of MSEs through the formulation and implementation of Micro and Small Enterprises Development Strategy and the number of MSEs in the country is steadily growing. But, much more important than increase in their numbers, their current status, stage and pace of development is significant because most MSEs are hibernated from growing and faced with the threat of failure due to many factors. Little research exists that examines these factors constraining the growth and survival of MSEs in developing countries, especially in Ethiopia. The purpose of this study is to assess the constraining factors related to marketing, management, finance and government supports hindering the growth of MSEs in BurayuThe study was employed through descriptive design in which stratified random sampling method was used to collect data from MSEs owners/ managers of eight selected sectors according to the objective of the study with a total population of 1250 and 78 samples. The samples were selected randomly from each stratum using proportionate allocation after stratification of the sectors. Questionnaires and interviews tools of data collection were used in the study. The data was analysed using descriptive statistics and presented through figures, tables and percentages. It is generally recognized that MSEs face unique challenges, which affect their growth and profitability and hence, diminish their ability to contribute effectively to sustainable development. The findings indicate that the most common factors constraining the growth of MSEs in Burayu are: lack of working premises, lack of working capital and access to credit, lack of market access, inadequate availability of infrastructure, lack of managerial training and experience; and scanty of marketing information. Replication of this study using larger samples and a broader geographic base, longitudinal data collection and using more statistical tests is suggested for cross-validation purposes in future researches to identify the factors constraining the growth and survival of MSEs.
Constraining Post-Inflationary Axions with Pulsar Timing Arrays
Creators: name: Servant, Géraldine
name: Simakachorn, Peera
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: gravitational radiation, background
cosmic string, network
axion, decay constant
axion, string
gravitational radiation, spectrum
axion, mass
background, stochastic
gravitational radiation, emission
dark matter
pulsar
GeV
U(1)
domain wall
NANOGrav
inflation
symmetry breaking
axion-like particles
history

description: Models that produce Axion-Like-Particles (ALP) after cosmological inflation due to spontaneous $U(1)$ symmetry breaking also produce cosmic string networks. Those axionic strings lose energy through gravitational wave emission during the whole cosmological history, generating a stochastic background of gravitational waves that spans many decades in frequency. We can therefore constrain the axion decay constant and axion mass from limits on the gravitational wave spectrum and compatibility with dark matter abundance as well as dark radiation. We derive such limits from analyzing the most recent NANOGrav data from Pulsar Timing Arrays (PTA). The limits are compatible with the slightly stronger $N_{\rm eff}$ bounds on dark radiation for ALP masses $m_a \lesssim 10^{-10}$ eV. On the other hand, for heavy ALPs with $m_a\gtrsim 0.1$ GeV and $N_{\rm DW}\neq 1$, new regions of parameter space can be probed by PTA data due to the dominant Domain-Wall contribution to the gravitational wave background.
Partially controlling transient chaos in the Lorenz equations
Creators: name: Capeáns, Rubén
name: Sabuco, Juan
name: Sanjuán, Miguel A. F.
name: Yorke, James A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Transient chaos is a characteristic behavior in nonlinear dynamics where trajectories in a certain region of phase space behave chaotically for a while, before escaping to an external attractor. In some situations the escapes are highly undesirable, so that it would be necessary to avoid such a situation. In this paper we apply a control method known as partial control that allows one to prevent the escapes of the trajectories to the external attractors, keeping the trajectories in the chaotic region forever. To illustrate how the method works, we have chosen the Lorenz system for a choice of parameters where transient chaos appears, as a paradigmatic example in nonlinear dynamics. We analyze three quite different ways to implement the method. First, we apply this method by building a 1D map using the successive maxima of one of the variables. Next, we implement it by building a 2D map through a Poincaré section. Finally, we built a 3D map, which has the advantage of using a fixed time interval between application of the control, which can be useful for practical applications.
description: Authors information was updated
Detailed VHE Studies of the Pulsar Wind Nebula HESS J1825-137
Creators: name: Mitchell, A. M. W.
name: Mariaud, C.
name: Eger, P.
name: Funk, S.
name: Hahn, J.
name: Hinton, J.
name: Parsons, R. D.
name: Marandon, V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The pulsar wind nebula (PWN) HESS~J1825-137, known to exhibit strong energy dependent morphology, was discovered by HESS in 2005. Powered by the pulsar PSR~B1823-13, the TeV gamma-ray emitting nebula is significantly offset from the pulsar. The asymmetric shape and 21~kyr characteristic age of the pulsar suggest that HESS~J1825-137 is in an evolved state, having possibly already undergone reverse shock interactions from the progenitor supernova. Given its large angular extent, despite its 4~kpc distance, it may have the largest intrinsic size of any TeV PWN so far detected. A rich dataset is currently available with H.E.S.S., including H.E.S.S. II data with a low energy threshold, enabling detailed studies of the source properties and environment. We present new views of the changing nature of the PWN with energy, including maps of the region and spectral studies.
description: 6 pages, 5 figures. In Proceedings of the 6th International Symposium on High Energy Gamma-Ray Astronomy (Gamma16), Heidelberg, Germany
MPEC 2023-N54 : 2006 OE7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
A Fast Summation Method for Oscillatory Lattice Sums
Creators: name: Denlinger, Ryan
name: Gimbutas, Zydrunas
name: Greengard, Leslie
name: Rokhlin, Vladimir
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 31A10, 31B10, 33E20, 35P25, 65B10, 65B15, 65N80, 78M16, 78M25

description: We present a fast summation method for lattice sums of the type which arise when solving wave scattering problems with periodic boundary conditions. While there are a variety of effective algorithms in the literature for such calculations, the approach presented here is new and leads to a rigorous analysis of Wood's anomalies. These arise when illuminating a grating at specific combinations of the angle of incidence and the frequency of the wave, for which the lattice sums diverge. They were discovered by Wood in 1902 as singularities in the spectral response. The primary tools in our approach are the Euler-Maclaurin formula and a steepest descent argument. The resulting algorithm has super-algebraic convergence and requires only milliseconds of CPU time.
description: 22 pages, 4 figures
Opportunities and Challenges in the Adoption of E-Banking Services: The Case of Dashen Bank S.C.
Creators: name: Zeleke, Abebe
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: This research project reports the findings of a study conducted to investigate opportunities and challenges in the adoption of E-banking services with respect to Dashen Bank S.C. The study examined opportunities and challenges within the context of Dashen Bank's E-banking services using a combination of Technology Acceptance Model (TAM) and Technology- Organization – Environmental (TOE) with some modification to guide the research. The study followed survey method and samples were taken from the Dashen Bank clerical staff using simple random sampling technique. The data was analyzed and tested using linear regression to show the effects of perceived usefulness, perceived ease of use, perceived risk, organizational factors and environmental factors on adoption of E-banking services. Based on the statistical analysis, perceived usefulness was found to have significant effect on adoption of E-banking services in Dashen Bank. Moreover, perceived risk and environmental factors were found to have significant influence in adoption of E-banking services. The findings of the study were all consistent with prior researches. The study revealed areas of improvement with possible solutions that mitigate the identified major challenges, which includes continuous reviewing and up grading of the existing security system, emphasis for appropriate promotion, and collaboration with other banks to have government support especially to the environmental factors of ICT infrastructure. Furthermore, the study suggests that future researches may embark on comprehensive investigation by incorporating customers' perceptions of all Ethiopian Commercial Banks. Keywords: E-banking, Adoption, Opportunities, Challenges, Dashen Bank
Mini-Chromosomes and Interlineage Genetic Exhange in the Blast Fungus Magnaporthe Oryzae
Creators: name: Barragan, A. Cristina
name: Latorre, Sergio M.
name: Malmgren, Angus
name: Harant, Adeline
name: Mock, Paul
name: Win, Joe
name: Lamour, Kurt
name: Burbano, Hernán A.
name: Kamoun, Sophien
name: Langner, Thorsten
Publisher: name: Zenodo
Year: 2023
Subjects: Blast fungus evolution
Plant pathogen interactions
Accessory chromosomes

description: Poster presented by A. Cristina Barragan at the 16th European Fungal Genetics Conference in Innsbruck, 5th-8th March 2023.
Assessment on Procurement Planning and Implementation Effectiveness in Ethiopia: The Case of Ministry of Urban Development, Housing and Construction
Creators: name: Getahun, Anteneh
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: The purpose of the study was to assess the effectiveness of procurement plan and its implementation practice in Ethiopia taking the case of Ministry of Urban Development, Housing and Construction (MUDHCo). The main assessment areas were on the internal factors, including: (i) the process and content of procurement plan and its implementation, (iii) specification completeness, and (iii) the planning stage price estimation relation with market realty. The study focuses on, assessing the plan versus the performance of the past two years, (2012/2013 and 2013/2014). The study deploys descriptive statistical method and the selection of the respondents was done using stratified random sampling techniques. In addition, open-ended questions were used by coded. Accordingly, questionnaires were distributed to potential respondents selected from the target population; and the responses were 95%. Based on the analysis, the Ministry has a trend in the preparing procurement plan. However, having a plan by itself does not ensure success; it largely, depends on the extent of implementation. In the case organization, the procurement plan, specification and bid documents and market price assessments were found poor and incomplete. Moreover, there was a long delay in the evaluation of technical documents. Despite, the work programs of the departments had affected much by the weak performance of procurement functions. Eventually, the study recommends that, the need for applying a collective effort on developing continuous training programs and vigorously and closely tracking the plan against the performance to make early corrective action. Key words: Effectiveness, Procurement Planning, Specification Completeness and Market Price Assessment
The Impact of Demographic factors on the Attitudes of Life Insurance Policyholders in the Case of Ethiopian Insurance Company
Creators: name: G/medhine, Asseged
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: The purpose of this study is to examine the impact of demographic factors on the attitude of life insurance holders in the case of Ethiopian Insurance Corporation. The study was conducted by collecting the response of policyholders through structured questionnaire on five point likert scale. Out of 200 questionnaires a total of 154(77%) usable responses were obtained to assess the level of awareness about demographic factors and their impact on policy holder attitude towards life insurance. Multiple regression Modeling (MRM) approach was used to analyze and test relationships among variables. The study found that Demographic factors such as income, religion, gender, education and age were found to have significance impact on the attitude of life insurance policyholders in Ethiopian Insurance Company's scenario. The implications of the study to management and theory are discussed and recommendations for future research have been made. The limitations of the study are also noted. The findings of the study may serve as an input for the Ethiopian Insurance Company in particular and the insurance industry in Ethiopia in general. It also aims to frame strategies how to increase the share of life insurance in the GDP of the country. Key words: Ethiopian, Income, life Insurance, attitude, Demographic factors
Incremental Noising and its Fractal Behavior
Creators: name: Raftopoulos, Konstantinos A.
name: Ferecatu, Marin
name: Sourlas, Dionyssios D.
name: Kollias, Stefanos D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This manuscript is about further elucidating the concept of noising. The concept of noising first appeared in \cite{CVPR14}, in the context of curvature estimation and vertex localization on planar shapes. There are indications that noising can play for global methods the role smoothing plays for local methods in this task. This manuscript is about investigating this claim by introducing incremental noising, in a recursive deterministic manner, analogous to how smoothing is extended to progressive smoothing in similar tasks. As investigating the properties and behavior of incremental noising is the purpose of this manuscript, a surprising connection between incremental noising and progressive smoothing is revealed by the experiments. To explain this phenomenon, the fractal and the space filling properties of the two methods respectively, are considered in a unifying context.
description: 10 pages, 5 figures
The University of Chicago Office of Civic Engagement Response to "Towards a Whiter Woodlawn"
Creators: name: Berman-Culter, Alyssa
Publisher: name: Unknown
Year: 2020

description: The University of Chicago Employer-Assisted Housing Program (EAHP), like so many initiatives of the University’s Office of Civic Engagement (OCE), aims to strengthen the University’s commitment to build a campus community that is more connected to its neighbors. The OCE team appreciates the opportunity to respond to the article “Towards a Whiter Woodlawn” and clarify, given our mission and programs, the misrepresentation of a program of value for our shared community. While we take issue with several of the arguments the article presents, here we would like to clarify five key points.
Indexing techniques for object-oriented databases
Creators: name: Singh, Yashwant Kumar.
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.
Quantitative quasisymmetric uniformization of compact surfaces
Creators: name: Geyer, Lukas
name: Wildrick, Kevin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Metric Geometry (math.MG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30C65

description: Bonk and Kleiner showed that any metric sphere which is Ahlfors 2-regular and linearly locally contractible is quasisymmetrically equivalent to the standard sphere, in a quantitative way. We extend this result to arbitrary metric compact orientable surfaces.
description: Comments welcome
Emergence of global scaling behaviour in the coupled Earth-atmosphere interaction
Creators: name: Fallah, Bijan
name: Saberi, Abbas Ali
name: Sodoudi, Sahar
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Scale invariance property in the global geometry of Earth may lead to a coupled interactive behaviour between various components of the climate system. One of the most interesting correlations exists between spatial statistics of the global topography and the temperature on Earth. Here we show that the power-law behaviour observed in the Earth topography via different approaches, resembles a scaling law in the global spatial distribution of independent atmospheric parameters. We report on observation of scaling behaviour of such variables characterized by distinct universal exponents. More specifically, we find that the spatial power-law behaviour in the fluctuations of the near surface temperature over the lands on Earth, shares the same universal exponent as of the global Earth topography, indicative of the global persistent role of the static geometry of Earth to control the steady state of a dynamical atmospheric field. Such a universal feature can pave the way to the theoretical understanding of the chaotic nature of the atmosphere coupled to the Earth's global topography.
description: 8 pages, 6 figures
AlM2B2 (M=Cr, Mn, Fe, Co, Ni): a group of nanolaminated materials
Creators: name: Kadas, Krisztina
name: Iusan, Diana
name: Hellsvik, Johan
name: Cedervall, Johan
name: Berastegui, Pedro
name: Sahlberg, Martin
name: Jansson, Ulf
name: Eriksson, Olle
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Combining theory with experiments, we study the phase stability, elastic properties, electronic structure and hardness of layered ternary borides AlCr2B2, AlMn2B2, AlFe2B2, AlCo2B2, and AlNi2B2. We find that the first three borides of this series are stable phases, while AlCo2B2 and AlNi2B2 are metastable. We show that the elasticity increases in the boride series, and predict that AlCr2B2, AlMn2B2, and AlFe2B2 are more brittle, while AlCo2B2 and AlNi2B2 are more ductile. We propose that the elasticity of AlFe2B2 can be improved by alloying it with cobalt or nickel, or a combination of them. We present evidence that these ternary borides represent nanolaminated systems. Based on SEM measurements, we demonstrate that they exhibit the delamination phenomena, which leads to a reduced hardness compared to transition metal mono- and diborides. We discuss the background of delamination by analyzing chemical bonding and theoretical work of separation in these borides.
The Efficiency and Effectiveness of Tax Management in Ethiopia with Special Emphasis on Value Added Tax: Case of Large Tax Payers Branch Office (Lto)
Creators: name: Gedamu, Samson
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The Government to undertake many socio-economic activities the tax revenue should be efficient and effective. Thus efficient and effective tax revenue management is the way enabling to achieve the 20 years the country development goals, which is Ethiopia has to get a position as medium world economy countries. According to EFIRA 2007 report federal VAT revenue (on domestic transaction) accounted for about 41 percent of total federal revenues from domestic sources. However; in the current situation the attitude of tax payer is minimum, the awareness of public is weak, and the capacity of the office is under ability to implement the VAT policy. So as to this a survey was carried out to cover the area of efficiency and effectiveness of tax management special emphasis on VAT. The objective of the study is to assess the efficiency and effectiveness of tax management with special emphasis on VAT-the case of ERCA-Large Tax Payers Branch Office. The research instruments are questionnaires and interview for the three target groups. Those are the tax payers, the communities of Addis Ababa, and the branch authority employees. The finding shows that the causes of efficient and effective VAT management failure are multidimensional. They include both internal and external factors and these are interrelated. Among the causes of failure are: limited office capacity, lack of unfit technologies, lack of sophisticated laws and procedures, lack of public awareness, and negative attitude of tax payers in the study area. The conclusion from the study data were collected from the tax payers, the communities of Addis Ababa, and the branch Authority employees by using questionnaire and interview. Finally, recommendations were given based on the findings. Total population of the study is as follows. There are three target groups; Tax payers, tax collectors and consumers. Therefore, their population also differs. The total population for tax payers is 1076, for tax collectors is 205 and for consumers is all residents of Addis Ababa. The sample technique used is purposive for tax collectors, convenience sampling for the rest. Key words: Tax Payers Tax Collectors Consumers Consumption Tax VAT (Value Added Tax)
MPEC 2024-Q84 : 2024 QR1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 QR1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: Python для аналитики данных. Практический курс
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2023

description: Учебное пособие представляет собой практический курс, состоящий из 13 занятий (12 из которых интерактивные — для среды JupyterLab). Курс содержит введение в основы языка Python с упором на аналитику данных (работа с наборами данных, статистика, язык SQL, метрики и машинное обучение). Приведен порядок выполнения занятий и архив необходимых файлов, а также дан список заданий для закрепления обучающимися изучаемого материала. Учебное пособие освещает вопросы применения ряда сквозных технологий, приведенных в Национальной программе «Цифровая экономика Российской Федерации», таких как «Технологии хранения и анализа больших данных», «Искусственный интеллект», «Машинное обучение». Подготовлено в соответствии с Федеральным государственным образовательным стандартом высшего образования. Предназначено для студентов технических направлений подготовки и специальностей, учебными планами которых предусмотрено изучение дисциплин «Искусственные нейронные сети», «Нейронные сети и нечеткая логика в задачах управления», «Интеллектуальные системы» и «Аналитика технологических данных», а также при реализации дополнительных образовательных программ с тематикой «Аналитика данных».
The vacuum structure of the Higgs complex singlet-doublet model
Creators: name: Ferreira, P. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The complex singlet-doublet model is a popular theory to account for dark matter and electroweak baryogenesis, wherein the Standard Model particle content is supplemented by a complex scalar gauge singlet, with certain discrete symmetries imposed. The scalar potential which results thereof can have seven different types of minima at tree-level, which may coexist for specific choices of parameters. There is therefore the possibility that a given minimum is not global but rather a local one, and may tunnel to a deeper extremum, thus causing vacuum instability. This rich vacuum structure is explained and discussed in detail.
description: 24 pages, 2 figures
Load balancing in a distributed system
Creators: name: Szeto, Willard.
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.
The Causes of Employees Turnover The Case of Ethiopian Police University College
Creators: name: Mengstie, Melku
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The purpose of this study was to examine the causes of employee turnover in Ethiopian Police University Collage (EPUC). The study employed both quantitative and qualitative research approaches. The sampling technique used is purposive sampling and convenience sampling method to select the sample size from the population. Questionnaire and interview were used for data collection. Descriptive statistics such as frequency and percentage were employed for data analysis. Data collected through questionnaire were analyzed using SPSS version 20. Regarding inferential statistics, Qualitative data that was gathered using the interview and documents were described verbally. The main finding indicated that dissatisfaction with level of salary and benefit packages, mismanagement, and employees' job dissatisfaction, unfair monetary reward and promotion systems were some of the causes for employee turnover. Similarly it was concluded that lack of career advancement, job dissatisfaction, leader's unwillingness to allow staff participation in decision making, job scope and unfair training system were main causes for turnover. It was recommended that managers should revise salary and benefit packages with external market, Proper treatment of employees, provide fair and equal training, assigning and promoting employees to different position according to their professional specialties and allow employee to participate in the decision making process to reduce employees turnover.
title: Eisen-Mangan-Anomalien im Grundwasser: Analyse der beeinflussenden Prozesse
title: Iron-manganese-anomalies of groundwater: Analysis of influencing processes
titleType: AlternativeTitle
Creators: name: Koopmann, Sarah
name: Fröllje, Henning
name: Hamer, Kay
name: Kubier, Andreas
name: Pichler, Thomas
Publisher: name: Springer
Year: 2020
Subjects: subject: Nitrate
subject: Denitrification
subject: sequential extraction
subject: batch experiments
subject: Stability field diagram
subject: 550

description: Im oberflächennahen Grundwasser Norddeutschlands wurden höhere Mangan- als Eisenkonzentrationen beobachtet. Diese Beobachtung wurde als Anomalie angesehen, da die Konzentration des Eisens (Fe) typischerweise mindestens 10-mal höher ist als die des Mangans (Mn). Um das Auftreten dieser Anomalien besser zu verstehen, wurden zwei Grundwassermessstellen mit unterschiedlichen Fe/Mn-Verhältnissen untersucht. Das Redoxpotenzial und der pH-Wert wurden als singuläre Steuerung der Anomalie ausgeschlossen, da beide Grundwässer außerhalb des Stabilitätsfeldes für Fe2+ im Eh-pH Diagramm lagen. Darüber hinaus war Mangankarbonat im anomalen Grundwasser stabil. Ein vierwöchiger Batchversuch mit Torfmaterial zeigte einen Anstieg der Konzentrationen von Mn und Fe. Derselbe Versuch mit Zugabe von Nitrat zeigte jedoch nur eine Erhöhung der Mangankonzentration, was darauf hindeutet, dass die Oxidation von Fe2+ durch Nitrat die Ursache für die unterschiedlichen Fe/Mn-Verhältnisse an den beiden Standorten ist. Daher sollte der Nitrateintrag in oberflächennahe Grundwasserleiter einen entscheidenden Einfluss auf die Fe/Mn-Verhältnisse im Grundwasser haben.
Dynamical analysis of the complex radio structure in 3C 293: Clues on a rapid jet realignment in X-shaped radio galaxies
Creators: name: Machalski, J.
name: Jamrozy, M.
name: Stawarz, L.
name: Wezgowiec, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Radio galaxies classified as X-shaped/winged, are characterised by two pairs of extended and misaligned lobes, which suggest a rapid realignment of the jet axis, for which a potential cause is still under debate. Here we analyse the complex radio structure of 3C 293 winged source hosted by the post-merger galaxy, which uniquely displays a significant asymmetry between the sizes of the two pairs of lobes, indicating that an episode of jet realignment took place only very recently. Based on all the available radio data for 3C 293, we have performed a detailed spectral modelling for the older and younger lobes in the system. In this way we derived the lobes' ages and jet energetics, which we then compared to the accretion power in the source. We found that the 200 kpc-scale outer lobes of 3C 293 are ~60 Myr old and that jet activity related to the formation of the outer lobes ceased within the last Myr. Meanwhile, the inner 4 kpc-scale lobes, tilted by ~40 deg with respect to the outer ones, are only about ~0.3 Myr old. The best model fits also return identical values of the jet power supplying the outer and the inner structures. This power is of the order of the maximum kinetic luminosity of a Blandford-Znajek jet for a given black hole mass and accretion rate, but only in the case of relatively low values of a black hole spin, a~0.2. The derived jet energetics and timescales, along with the presence of two optical nuclei in 3C 293, all provide a strong support to the Lense-Thirring precession model in which the supermassive black hole spin, and therefore the jet axis, flips rapidly owing to the interactions with the tilted accretion disk in a new tidal interaction episode of the merging process. We further speculate that, in general, X-shape radio morphology forms in post-merger systems that are rich in cold molecular gas, and only host slowly spinning supermassive black holes.
description: Astronomy & Astrophysics, in press
Contributing Factors for Under-representation of Women in the Leadership Positions of the Commercial Bank of Ethiopia
Creators: name: Seifu, Hanna
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: The Commercial Bank of Ethiopia (CBE) is the largest financial institution and one of the major employers in Ethiopia. Although the number of both female and male employees of the bank increased over time, the representation of women in leadership positions remained limited. Therefore, the purpose of this study was to investigate factors contributing to underrepresentation of women in leadership positions of the CBE and to further suggest remedial action for improving women's participation in the leadership positions of the Bank. This study was guided by gender organization system theory which assumes that women's advancement to organizational leadership is influenced by the interaction of their own gender, organizations and the broader system that shapes values, attitudes and behaviors of people in organizations. Descriptive survey was adopted for the study involving both quantitative and qualitative techniques. A total of 200 respondents from the target population were sampled; where 100 female and 40 male managers were selected purposively and 60 non-managerial female employees were sampled using snowball sampling technique. The required data was collected using questionnaires and interview. Descriptive statistics such as frequencies and percentages were used to analyze the data. The study identified societal, organizational and personal factors that contribute to the underrepresentation of women in the leadership positions of CBE. In general, the study revealed that societal belief regarding gender roles; over burden of women by household responsibilities and lack of role models of successful women leaders were the most important constraints, among others, that hinder women advancement to leadership positions in CBE. This study indicates that given such top factors which are holding women from promoted to the leadership positions of CBE, establishing integrated effort and strategies that affect change at the individual, organizational and societal levels is crucial in order to improve women's participation in the leadership positions of the Bank. Key words: Gender, leadership, Commercial Bank of Ethiopia, underrepresentation, GOS