cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Close-in planetesimal formation by pile-up of drifting pebbles
Creators: name: Drazkowska, Joanna
name: Alibert, Yann
name: Moore, Ben
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The consistency of planet formation models suffers from the disconnection between the regime of small and large bodies. This is primarily caused by so-called growth barriers: the direct growth of larger bodies is halted at centimetre-sized objects and particular conditions are required for the formation of larger, gravitationally bound planetesimals. We aim to connect models of dust evolution and planetesimal formation to identify regions of protoplanetary discs that are favourable for the formation of kilometre-sized bodies and the first planetary embryos. We combine semi-analytical models of viscous protoplanetary disc evolution, dust growth and drift including backreaction of the dust particles on the gas, and planetesimal formation via the streaming instability into one numerical code. We investigate how planetesimal formation is affected by the mass of the protoplanetary disc, its initial dust content, and the stickiness of dust aggregates. We find that the dust growth and drift leads to a global redistribution of solids. The pile-up of pebbles in the inner disc provides local conditions where the streaming instability is effective. Planetesimals form in an annulus with its inner edge lying between 0.3 AU and 1 AU and its width ranging from 0.3 AU to 3 AU. The resulting surface density of planetesimals follows a radial profile that is much steeper than the initial disc profile. These results support formation of terrestrial planets in the solar system from a narrow annulus of planetesimals, which reproduces their peculiar mass ratios.
description: 11 pages, 7 figures, 2 tables, accepted for publication in Astronomy & Astrophysics, updated to match the published version
Compensation of Reactive Power by Static Var Compensator in Case of Sebeta-Dewele
Creators: name: Welday, Gebretinsae
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: With increasing focus on economic as well as environmentally friendly means for mass transit, electric rail transport is getting renewed momentum in Ethiopia. The feeding of heavy rolling stock from AC grids cause unacceptable voltage drops, high reactive current, low power factor and asymmetry between phases of the feeding grid. The reactive current raises the dissipation of power in the network and depresses the power supply capability of supply network. The aim of this thesis is to design and simulate static Var compensator connected in shunt that offers means of remedy to these problems. Static var compensator (SVC) is basically a shunt connected static var generator whose output is adjusted to exchange capacitive or inductive current so as to maintain or control power variables. The modeling of Sebeta-Dewele power network is done and simulated with and without applying reactive power compensation. A power flow analysis is done to determine the placement of the compensator. A compensator is installed at Wachulalu, Haro and Meiso. The reactive power loss is minimized, and the terminal voltage is kept 0.975 pu after compensation is done. The rest of traction substations don"t require a compensator. A PI controller is used to control the firing angle of thyrstor control reactor of the static Var compensator and achieve better and smooth control of reactive power. A Matlab Simulink is used to simulate the system. The power flow is done by using newton raphson iterative method on powerworld simulating software.
From Simplicity to Complexity Based on Consensus: A Case Study
Creators: name: Zhang, Yinyan
name: Li, Shuai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Distributed consensus has been intensively studied in recent years as a means to mitigate state differences among dynamic nodes on a graph. It has been successfully employed in various applications, e.g., formation control of multi-robots, load balancing, clock synchronization. However, almost all existing applications cast an impression of consensus as a simple process to iteratively reach agreement, without any clue on possibility to generate advanced complexity, say shortest path planning, which has been proved to be NP-hard. Counter-intuitively, we show for the first time that the complexity of shortest path planning can emerge from a perturbed version of min-consensus protocol, which as a case study may shed lights to researchers in the field of distributed control to re-think the nature of complexity and the distance between control and intelligence. Besides, we rigorously prove the convergence of graph dynamics and its equivalence to shortest path solutions. An illustrative simulation on a small scale graph is provided to show the convergence of the biased min-consensus dynamics to shortest path solution over the graph. To demonstrate the scalability to large scale problems, a graph with 43826 nodes, which corresponds to a map of a maze in 2D, is considered in the simulation study. Apart from possible applications in robot path planning, the result is further extended to robot complete coverage, showing its potential in real practice such as cleaning robots.
description: 8 pages, 6 figures
Impact of Productive Safety Net Program on Households' Welfare and Resilience to Environmental shocks in Rural Ethiopia: Evidence from Panel
Creators: name: Abuye, Chernet S.
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: From the analysis of IFPRI five round survey data from 2006 to 2014 this study has examined the impact of Productive Safety Net Program (PSNP) on Resilience to environmental shocks and Welfare of beneficiary households. In this study the analysis was made using Difference in Difference method of panel data analysis. This study has found Positive impact of PSNP on beneficiaries' Resilience to shock; measured using Food Gap, inconclusive impact of beneficiaries Welfare; measured using Per-capita expenditure and PSNP impact on Welfare of program participant has been concluded as Negative based on causal effect analysis of PSNP and households Welfare; using Asset Accumulation. This study has also recommended to measure program impact by classifying resilience effect of PSNP in to ex-antie analysis and ex-post analysis of shock resilience and indicates the potential effect of possible policy changes particularly policy issues related to the program such as payment size and PW involvements. Key word: Resilience, Welfare, Environmental shock, Index, PSNP, Ethiopia
The propagation of water waves over varying topography
Creators: name: Kennedy., Andrew Brian
Publisher: name: Monash University
Year: 2021

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.
Reducing Energy Consumption of Addis Ababa Light Rail Train by using Co2 -Controlled ventilation for air Condition
Creators: name: Radwan, Ahmed
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Rail has been recognized as the most energy efficient and compatible transportation made. In fact, reducing the energy consumption of rail vehicle is a key issue. The Addis Ababa light rail train consumes, in addition to the energy needed for train motion, a share of electricity for comfort purpose. About 20% to 40% of the energy consumed by the vehicle is used for ventilation and air-conditioning. It is known that air-conditioning accounts for the biggest share of comfort energy. . The air-condition controlled by controls the amount of supply outdoor fresh air in a train depending on a number of people. People are the main source of in train or building. In the coach, if a number of passengers in coach is doubled, the level will accordingly double. If one ore few people leave the train, the level of will proportionally decrease. Thus this system saves energy solely by not heating or cooling unnecessary amount of outdoor air. The main objective of this research is to reduce the energy consumption of the train by using c -operated ventilation for air-conditioning. In order to achieve this precious goal, this paper proposes to use -operated ventilation in order to reduce the energy used for comfort purpose. The energy of -controlled air condition and CAV (conventional system) are simulated and analysed by HAP. While doing this thesis, the weather data are collected from National Metrology Agency and the physical data of the train are gathered from Ethiopia Railway Corporation. Then all data are entered in to the software to run the simulation of the train energy and comparison of CAV (conventional system) and -operated air condition (VAV) has done based energy cost and energy consumption. . The result of train simulation report has shown clearly that -operated air condition consume less energy and is the energy cost effective as compared to CAV ( conventional system). It has shown that this study system saves 8 Mwh per year which means 194 $/yr. Hence it is recommended to Addis Ababa Light Rail Train to apply this economic system.
Topological Superconductivity in a Planar Josephson Junction
Creators: name: Pientka, Falko
name: Keselman, Anna
name: Berg, Erez
name: Yacoby, Amir
name: Stern, Ady
name: Halperin, Bertrand I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider a two-dimensional electron gas with strong spin-orbit coupling contacted by two superconducting leads, forming a Josephson junction. We show that in the presence of an in-plane Zeeman field the quasi-one-dimensional region between the two superconductors can support a topological superconducting phase hosting Majorana bound states at its ends. We study the phase diagram of the system as a function of the Zeeman field and the phase difference between the two superconductors (treated as an externally controlled parameter). Remarkably, at a phase difference of $π$, the topological phase is obtained for almost any value of the Zeeman field and chemical potential. In a setup where the phase is not controlled externally, we find that the system undergoes a first-order topological phase transition when the Zeeman field is varied. At the transition, the phase difference in the ground state changes abruptly from a value close to zero, at which the system is trivial, to a value close to $π$, at which the system is topological. The critical current through the junction exhibits a sharp minimum at the critical Zeeman field, and is therefore a natural diagnostic of the transition. We point out that in presence of a symmetry under a modified mirror reflection followed by time reversal, the system belongs to a higher symmetry class and the phase diagram as a function of the phase difference and the Zeeman field becomes richer.
Dynamic runnability problems in high speed film coating
Creators: name: Kendel., Friedrich
Publisher: name: Monash University
Year: 2021
Subjects: classificationCode: 400499
subject: Chemical engineering not elsewhere classified

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.
Approaching Symbolic Parallelization by Synthesis of Recurrence Decompositions
Creators: name: Fedyukovich, Grigory
name: Bodík, Rastislav
Publisher: name: arXiv
Year: 2016
Subjects: subject: Programming Languages (cs.PL)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We present GraSSP, a novel approach to perform automated parallelization relying on recent advances in formal verification and synthesis. GraSSP augments an existing sequential program with an additional functionality to decompose data dependencies in loop iterations, to compute partial results, and to compose them together. We show that for some classes of the sequential prefix sum problems, such parallelization can be performed efficiently.
description: In Proceedings SYNT 2016, arXiv:1611.07178
Exchange Rate Pass Through in Ethiopia: A Vector Error Correction Model (VEC)
Creators: name: Gidey, Negesi
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: It is recognized in the literature that exchange rate pass through is a very important instrument in the design of monetary policy, particularly in response to exchange rate shocks. This paper has examined the pattern of exchange rate pass-through to consumer price indices in Ethiopia in the sample period beginning from 1998Q1 up to 2013Q4 with 64 observations. Nominal effective exchange rate (NEER) and consumer price index (CPI) was the centre of investigation in the paper. Error correction model accompanied by impulse response function is applied for analyzing the data. The result shows that there is modest exchange rate pass through of 34 % in the long run. However, there is low exchange pass through in the short run in that it is not much difficult burden for the monetary authority.
Curved branes with regular support
Creators: name: Antoniadis, Ignatios
name: Cotsakis, Spiros
name: Klaoudatou, Ifigeneia
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study spacetime singularities in a general five-dimensional braneworld with curved branes satisfying four-dimensional maximal symmetry. The bulk is supported by an analog of perfect fluid with the time replaced by the extra coordinate. We show that contrary to the existence of finite distance singularities from the brane location in any solution with flat (Minkowski) branes, in the case of curved branes there are singularity-free solutions for a range of equations of state compatible with the null energy condition.
description: 22 pages, 3 figures
Searching for New Spin-Dependent Interactions with SmCo$_5$ Spin Sources and a SERF Comagnetometer
Creators: name: Ji, Wei
name: Fu, Changbo
name: Gao, Haiyan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose a novel method to search for possible new macro-scale spin- and/or velocity-dependent forces (SVDFs) based on specially designed SmCo$_5$ spin sources and a spin exchange relaxation-free (SERF) comagnetometer. A simulation shows that, by covering a SmCo$_5$ permanent magnet with a layer of pure iron, a high net spin density source of about $1\times 10^{22}$/cm$^3$ could be obtained. Taking advantages of the high spin density of this iron-shielded SmCo$_5$ and the high sensitivity of the SERF, the proposed method could set up new limits of greater than 10 orders of magnitude more sensitive than those from previous experiments or proposals in exploring SVDFs in force ranges larger than 1 cm.
description: 5 pages, 3 figures
Trade Liberalization and Economic Growth in Ethiopia: Abound test Approach
Creators: name: Assefa, Addis
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2008

description: The purpose of the study is to analyze the relationship between Ethiopia's economic growth (RGDP) and trade liberalization (OPEN), using the time series data during 1971/72-2003/04. In the estimation of the long run and the short run relationships among the variables, the newly developed ARDL-ECM bound test procedure (Pasaran, 2001) is employed. This approach is capable of testing for the existence of a long run relationship regardless of whether the underlying time series are individually I(0) or I(1) or whether the underlying time series are mutually I(1) or I(0). This enhanced the stability and robustness of our results. Accordingly, the results indicate that there exist a long run relationship between real GDP per capita and openness (trade/GDP). The long run estimated coefficient suggests that the impact of trade liberalization on economic growth has positive and significant but others variables real exchange rates (RER) and labour force (LF) are insignificant impact on real GDP per capita. Further, the feedback coefficient indicate that a very high rate of adjustment towards long run equilibrium. The CUSUM and CUSUMQ stability test also indicate that the estimated long run coefficients remain stable over the period of the study. Since trade liberalization is the long run process, from the study we can suggests that in order to enhance growth the country should continuing liberalize their trade.
Exergy analysis and cycle selection of pressure swing adsorption systems
Creators: name: Kearns., David Terry
Publisher: name: Monash University
Year: 2021

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.
$SU(2)$ particle sigma model: the role of non-point symmetries in global quantization
Creators: name: Aldaya, Victor
name: Guerrero, Julio
name: López-Ruiz, Francisco F.
name: Cossío, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we achieve the quantization of a particle moving on the $SU(2)$ group manifold, that is, the three-dimensional sphere $S^{3}$, by using group-theoretical methods. For this purpose, a fundamental role is played by contact, non-point symmetries, i.e., symmetries that leave the Poincaré-Cartan form semi-invariant at the classical level, although not necessarily the Lagrangian. Special attention is paid to the role played by the basic quantum commutators, which depart from the canonical, Heisenberg-Weyl ones, as well as the relationship between the integration measure in the Hilbert space of the system and the non-trivial topology of the configuration space. Also, the quantization on momentum space is briefly outlined.
description: 16 pages, 1 figure, title changed
Energetics of point defects in aluminum via orbital-free density functional theory
Creators: name: Qiu, Ruizhi
name: Lu, Haiyan
name: Ao, Bingyun
name: Huang, Li
name: Tang, Tao
name: Chen, Piheng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The formation and migration energies for various point defects, including vacancies and self-interstitials in aluminum are reinvestigated systematically using the supercell approximation in the framework of orbital-free density functional theory. In particular, the finite-size effects and the accuracy of various kinetic energy density functionals are examined.The calculated results suggest that the errors due to the finite-size effect decrease exponentially upon enlarging the supercell. It is noteworthy that the formation energies of self-interstitials converge much slower than that of vacancy. With carefully chosen kinetic energy density functionals, the calculated results agree quite well with the available experimental data and those obtained by Kohn-Sham density functional theory which has exact kinetic term.
A Study on Railway Transport Demand Model in Ethiopia (A Case Study on Addis Ababa-Djibouti Line)
Creators: name: Dawit, Fekadu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: The growing Population and Economy of Ethiopia require efficient transport system. However, the country's transport infrastructure with the exception of air transport is not developed; the Country has poor road and rail transport network and density, one of the least in Africa, with many challenges; financial, maintenance, professionals, and management problems. Rail transport which started operations in 1901 is pioneer in the country; however, its fate seems unfortunate. The road transport system has relatively better technological and professional advancement. Despite the past shortcomings of railway transport, the Country has now formulated an ambitious plan to develop a new railway network system with a length of 5,000 km. This paper tries to fill the gap in the railway system planning and modelling unlike the country's road transport; it is not developed but rather diminished and has not established working manuals and standards. There have also been planning and management problems and as a result, the previous Ethio-Djibouti Railway Company suffered huge losses in traffic and finance and eventually was forced to quit operations. The Direct Demand Model which is developed in this research is simple and can produce traffic demand on single computation. It was, selected and analysed with variables of: economy, population, travel distance and time, load capacity, environment, topography, energy, and other variables (price, income, logistics, travel culture/behaviour, urbanisation, multimodal/intermodal, technology, information communication technology(ICT), transport demand management (TDM), and season etc); the model produced a 58/42 and 55/45 FREIGHT and PASSENGER modal split for the year 2020; the result agrees with the AAU 2011 study of 60/40 Modal Split. In addition the model validated for road freight with Pearson Coefficientr=0.98 and r 2 = 0.96. The observation of Ethio-Djibouti rail line exhibits: a decline of rolling stocks and traffic with loss in its revenue. This research has produced model from investment and strategic plan view of land transport.
Household Demand for Improved Water Service in Urban Areas: The Case of Addis Ababa, Ethiopia
Creators: name: Fissha, Medhin
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2006

description: This paper analyzes determinates of households' willingness to pay for improved water service, using the contingent valuation method (CVM). The study used cross sectional data collected from 250 households living in different areas of Addis Ababa, Ethiopia through single bounded elicitation format with an open ended follow up question using a face-to face interview. The empirical models adopted by this study to determine factors influencing households' decisions to connect to the pipe water scheme are Probit and Tobit models. Results of the study revealed that respondents' WTP is affected by a number of explanatory variables including sanitation facility, water related disease and socio –economic variables like income, age, sex, marital status, education level and family size of the respondent etc. The mean WTP for private connection is found 20 cents per Baldi and 15.79 cents per Baldi from closed ended and open-ended question respectively, which are well above the current subsidized tariff. The following policy implications are derived from the study. First, the positive and significant relation between sanitation facility and WTP implies that improving sanitation service could not be done alone rather it has to go hand in hand with improvements in piped water supply provision. Finally, the revenue and households' welfare gain in changing the existing policy (low tariff with limited unreliable private service and hence low level equilibrium) to a new (higher tariff with more and improved private connections) can be huge. Key Words: Willingness-to-pay, improved water service, sanitation facility, contingent valuation method, Addis Ababa, Ethiopia
The protective action of zinc dust based paints
Creators: name: Kariuki., John Gatumbi E.
Publisher: name: Monash University
Year: 2021

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.
Cluster Glimpses with Raven: AO Corrected Near and Mid-Infrared Images of Glimpse C01 and Glimpse C02
Creators: name: Davidge, T. J.
name: Andersen, D. R.
name: Lardiere, O.
name: Bradley, C.
name: Blain, C.
name: Oya, S.
name: Terada, H.
name: Hayano, Y.
name: Lamb, M.
name: Akiyama, M.
name: Ono, Y. H.
name: Suzuki, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We discuss images of the star clusters GLIMPSE C01 (GC01) and GLIMPSE C02 (GC02) that were recorded with the Subaru IRCS. Distortions in the wavefront were corrected with the RAVEN adaptive optics (AO) science demonstrator, allowing individual stars in the central regions of both clusters -- where the fractional contamination from non-cluster objects is lowest -- to be imaged. In addition to J, H, and K' images, both clusters were observed through a narrow-band filter centered near 3.05um; GC01 was also observed through two other narrow-band filters that sample longer wavelengths. Stars in the narrow-band images have a FWHM that is close to the telescope diffraction limit, demonstrating that open loop AO systems like RAVEN can deliver exceptional image quality. The near-infrared color magnitude diagram of GC01 is smeared by non-uniform extinction with a dispersion +/- 0.13 magnitudes in A_K. The Red Clump is identified in the K luminosity function (LF) of GC01, and a distance modulus of 13.6 is found. The K LF of GC01 is consistent with a system that is dominated by stars with an age > 1 Gyr. As for GC02, the K LF is flat for K > 16, and the absence of a sub-giant branch argues against an old age if the cluster is at a distance of ~ 7 kpc. Archival SPITZER [3.6] and [4.5] images of the clusters are also examined, and the red giant branch-tip is identified.
description: To appear in the Astronomical Journal
Hand in Hand: Sozialpädagogik und Jugendstrafvollzug: Wie die Sozialpädagogik jugendlichen Straftäter*innen auf ihrem Weg im Strafvollzug begleitet
Creators: name: Meierhans, Sarah Jasmin
Publisher: name: Zenodo
Year: 2023

description: Die vorliegende Bachelorarbeit von Sarah Meierhans befasst sich mit sozialpädagogischen Interventionen bei delinquenten Jugendlichen. Vor dem Hintergrund der Jugendkriminalität und der Notwendigkeit erzieherischer Interventionen kommt der Sozialpädagogik eine zentrale Rolle zu. Ziel dieser Arbeit ist es aufzuzeigen, welche Rolle die Sozialpädagogik im Jugendstrafvollzug spielt und wie erzieherische Massnahmen dazu beitragen, die spätere Wiedereingliederung jugendlicher Straftäter in die Gesellschaft zu erleichtern. Die theoretischen Grundlagen der Sozialpädagogik im Kontext straffälliger Jugendlicher werden unter Einbeziehung der erzieherischen Prinzipien des Jugendstrafrechts dargestellt. Verschiedene Ansätze und Methoden der Sozialpädagogik im Kontext straffälliger Jugendlicher werden vorgestellt, darunter Empowerment, berufliche Integration und Beziehungsgestaltung. Zusammenfassend unterstreicht die Bachelorarbeit die entscheidende Rolle der Sozialpädagogik bei der Unterstützung von jugendlichen Straftätern. Durch die gezielte Förderung von sozialen Fähigkeiten und der individuellen Ressourcen werden die Chancen auf ein straffreies Leben erhöht.
description: + Code Diss LU: hslusa basp + Fussnote: Bachelor-Arbeit, Hochschule Luzern – Soziale Arbeit, Studienrichtung Sozialpädagogik, 2023 + NL-Code: NLLUHSA202309
Developing pantograph-catenary contact and predicting fatiguefailure of contact wire of railways
Creators: name: Andinet, Zereabruk
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: Railway overhead systems (catenary–pantograph) are subjected to cyclic load (fatigue) while delivering electrical energy to train's electrical motors. The catenary–pantograph system mainly consists of a messenger wire, contact wire and a pantograph. Contact between the pantograph's head and contact wire is vital for the train to operate smoothly. Too much or too little contact leads to increased wear in the system. This cyclic load leads to fatigue wear of over head contact wire and then unexpectedly without any indication the system will fail. Hence, this thesis paper addresses the problem by developing the contact between the pantograph-catenary and then predicts the fatigue life of the contact wire. This ensures the reliability of the railway system, control their maintenance periods and the quality of the current collection will increase as the loss of contact is maintained. The methods used in this thesis are analytical system and predicting the fatigue life via ANSYS soft ware and comparing the results with experimental results carried out. The application area is in electrical driven railways via pantograph-catenary system like Ethiopian Rail way Corporation which uses light rail way in Addis Ababa city and Ethio-djibouti rail way. Thus, as results show in this thesis, it is possible to maximize the life span of the contact wire by applying preventive and proactive maintenance, minimize maintenance cost, down time of trains and increase the satisfaction of customers.
Role of thermal friction in relaxation of turbulent Bose-Einstein condensates
Creators: name: Kim, Joon Hyun
name: Kwon, Woo Jin
name: Shin, Yong-il
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In recent experiments, the relaxation dynamics of highly oblate, turbulent Bose-Einstein condensates (BECs) was investigated by measuring the vortex decay rates in various sample conditions [Phys. Rev. A $\bf 90$, 063627 (2014)] and, separately, the thermal friction coefficient $α$ for vortex motion was measured from the long-time evolution of a corotating vortex pair in a BEC [Phys. Rev. A $\bf 92$, 051601(R) (2015)]. We present a comparative analysis of the experimental results, and find that the vortex decay rate $Γ$ is almost linearly proportional to $α$. We perform numerical simulations of the time evolution of a turbulent BEC using a point-vortex model equipped with longitudinal friction and vortex-antivortex pair annihilation, and observe that the linear dependence of $Γ$ on $α$ is quantitatively accounted for in the dissipative point-vortex model. The numerical simulations reveal that thermal friction in the experiment was too strong to allow for the emergence of a vortex-clustered state out of decaying turbulence.
description: 7 pages, 5 figures
The phenomena of moisture transport across porcine skin : experimental and theoretical investigations
Creators: name: Kar., Saptarshi
Publisher: name: Monash University
Year: 2021

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.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 17 (26 b)]
Creators: name: , Guido
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1289
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Guido, Sohn des verstorbenen Lyazarius de Zuglaraga, tritt nach erfolgter Vermessung den Besitz der beiden Stücke Land, gelegen an einem Ort, genannt Martorigus, an, die er von Coradina, Witwe des Notars Zenzabriga, aus Mogliano Veneto gekauft hatte.
19th International Review of Leave Policies and Related Research 2023
Creators: name: Schmidt, Eva-Maria
Publisher: name: University of Vienna. Project: Family Studies in Austria
Year: 2023
Subjects: paternity leave
maternity leave
parental leave
care leave for sick relatives

description: The International Network on Leave Policies and Research has been producing an annual review of leave policies and related research since 2005 (for earlier reviews, go to the network’s website www.leavenetwork.org). The review covers Maternity, Paternity and Parental leaves; leave to care for sick children and other employment-related measures to support working parents; and early childhood education and care policy. The 2023 review covers 50 countries and is based on country notes from each participating country, prepared by members of the network and edited by a team of network members. Each country note follows a standard format: details of different types of leave; the relationship between leave policy and early childhood education and care policy; recent policy developments; information on take-up of leave. The review also includes definitions of the main types of leave policies; and cross-country comparisons. These comparative overviews cover: each main type of leave; the relationship between leave and ECEC entitlements; and policy changes and developments since the previous review. We also include a technical appendix.
Mathematical formulae on coins, parts I and II
Creators: name: Fukś, Henryk
Publisher: name: arXiv
Year: 2016
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics

description: In the article "The Tale of Two Queens and Two Towering Figures" published in CNJ in 2012 (CNJ vol. 57 No. 5, pp. 304-315), we discussed the contributions of Copernicus and Newton to coin minting and monetary reforms, as well as the commemoration of their achievements on contemporary coins. In the current article we will examine more explicit aspects of the relationship between mathematical sciences and numismatics, namely the presence of mathematical formulae on coins. We will survey examples of coins depicting mathematical formulae, ranging from some universally recognizable ones to more advanced symbolic expressions which are known only to specialists.
description: 10 pages, 33 illustrations
title: Beholding Beauty: Aesthetics, Style and Sensation in US Quality Television Political Thrillers
Creators: name: Young, Michael
Publisher: name: University of Reading
Year: 2021

description: This is a study about stylistic configurations in quality American television from the perspective of aesthetic engagement and focuses on the political thrillers Homeland (Showtime, 2011-2020), Scandal (ABC, 2012-2018) and House of Cards (Netflix, 2013- 2019). Using subjective aesthetic sensitivity as a starting point, this thesis entails considering debates from philosophy and television studies, specifically drawing on Kantian analytic aesthetics to focus on affect and televisual style. It further demonstrates how this focus can contribute to a unique evaluative methodology in the field of television aesthetics and a more nuanced reflection on thrillers’ potential for exemplary aesthetic enunciation using three case studies. Arguing that television works have the potential to be art, this thesis uses close textual analysis to explore how the programme’s stylistic and aesthetic choices work to induce thrilling sensations by their material manipulation of artistic elements and appreciates their achievements in terms of technical execution and sensuality. The thesis makes new contributions to knowledge by i) closely engaging with the conceptual and practical aesthetics of television lighting by reference to industry terminology, production methods and information gleaned from conferences, industry publicity, festivals and trade journals about technical equipment; ii) its thorough exploration of recent US political thrillers in recognition of its gap in the literature and iii) its critical appreciation and wide-ranging reflection upon the philosophical foundations of television aesthetics, along with the epistemic perspectives and affective potentialities such explorations entail.
Phenomenon of liquid drop impact on solid surfaces in very early stages
Creators: name: Kannangara., Kannangara Koralalage Don Dushmantha Sisiranath
Publisher: name: Monash University
Year: 2021

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.
Crowdsourced science: sociotechnical epistemology in the e-research paradigm
Creators: name: Watson, David
name: Floridi, Luciano
Publisher: name: arXiv
Year: 2016
Subjects: subject: Applications (stat.AP)
subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Recent years have seen a surge in online collaboration between experts and amateurs on scientific research. In this article, we analyse the epistemological implications of these crowdsourced projects, with a focus on Zooniverse, the world's largest citizen science web portal. We use quantitative methods to evaluate the platform's success in producing large volumes of observation statements and high impact scientific discoveries relative to more conventional means of data processing. Through empirical evidence, Bayesian reasoning, and conceptual analysis, we show how information and communication technologies enhance the reliability, scalability, and connectivity of crowdsourced e-research, giving online citizen science projects powerful epistemic advantages over more traditional modes of scientific investigation. These results highlight the essential role played by technologically mediated social interaction in contemporary knowledge production. We conclude by calling for an explicitly sociotechnical turn in the philosophy of science that combines insights from statistics and logic to analyse the latest developments in scientific research.
description: Synthese, October 2016
Overload Effect on The Life Cycle of Car Body Structures for AALRT Trains
Creators: name: Ehetaferahu, Berhanu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Ethiopian railways corporation invest a lot of money and construct AALRT and it's warmly welcomed by the people. Since it is been 1 and half year the trains start working, And even if the design life cycle of AALRT train car body structure should not be less than 30 years, train's body start to degrade from day to day. This will be a problem for AALRT in terms of quality of service, in terms of maintenance cost and damage of train body before design life cycle. This paper aims to discuss the effect of un acceptable passenger over load effect on life cycle of AALRT train car body steel structure and show the effect of different loading conditions by modeling car body steel structure and making analysis using Catia and Ansys software . The methodology of this paper starts by collected real overload condition data's, studied car body frame structure and materials used for AALRT trains, designed frame steel structure of AALRT train using Catia V5R19 software and analyzed by Ansys workbench 15.0 software using seven different loading conditions. The total fatigue life analyzed by using PalmgrenMiner Linear Damage Rule and the final fatigue life cycle result found. The calculated life cycle result converted to time. The output of the analysis shows that some parts of under frame steel structures on Exit/Entrance area have fewer life cycles. The connection of the high floor and low floor area and near to turning table have less life cycle than design life, when the loading condition reach at maximum level . But the total life cycle is above from the design life. Finally the total fatigue life cycle of four parts on Motor car had below the design life cycle. By adding additional reinforcement to those four parts, it is possible to increase the fatigue life. Even it can resist the over load at standing and seat area beyond designed load limit.
A cognitive theory of robot path planning : semantics-based robot manipulation free motion synthesis
Creators: name: Hee., Kang Kheng
Publisher: name: Monash University
Year: 2021

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.
Parental Satisfaction Concerning Their Neonatal Care and Associated Factors in Selected Governmental Hospital, Addis Ababa, Ethiopia, 2017
Creators: name: Endale, Hana
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Background The newborn period (neonate) is defined as beginning at birth and lasting through the 28th day. Following birth Neonatal intensive care units (NICUs) are those units that are specifically designed for premature and very ill newborns with different diagnoses. Measuring patient satisfaction has become an integral part of hospital management strategies for quality assurance and accreditation process in most countries. Therefore the aim of this study is to assess the parent satisfaction and associated factors in the neonatal intensive care unit. Objective to assess the level of satisfaction and associated factors concerning their neonatal care in NICU of selected governmental hospital, Addis Ababa, Ethiopia, 2017. Methodology An institutional based cross sectional study was conducted among parents of hospitalized neonate in selected government hospital. Data was collected by using interviewer - administered structured questionnaire. Then the collected data was entered and cleaned using Epi data versions 3.1 and then it was exported & analyzed using Statistical Package for Social Science (SPSS) version 20. To determine association between nominal variables such as socio- demographic variables and parents' level of satisfaction bivariate and multiple logistic regressions were computed. Result: The overall proportion of parental satisfaction of admitted neonate was found to be 41.8%. Parents who disagreed with the chair in the waiting area were less likely to be satisfied than who agreed [AOR= 0.24(0.078-0.739)]. Those who disagreed with keep informed about their child condition were less likely to be satisfied than who agreed [AOR= 0.143(0.049-0.41)] and parents who agreed with information about NICU rules 4.57 times more likely satisfied than who disagreed [AOR=4.57(1.563-13.37)]. Conclusion and recommendations Among 400 Parents 41.8% were satisfied. Accessibility of enough chairs in the waiting area, keeping well informed parents concerning their neonatal condition and informed about NICU rules were determinant factors of parental satisfaction. As a recommendation, Prepare good waiting area which should include accessibility of drinking water, bathing rooms, enough chair and toilet. Make an effort to initiate family centered care in order to inform the child condition. Keywords: parental satisfaction NICU hospital care
The Effect Of Lean Manufacturing Practice On Operational Performance Of Ethiopian Army Foundation Adama Garment Industry
Creators: name: Tedela, Mesfin
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Lean manufacturing concept is to create more value for customer by eliminating non-value adding activities. Manufacturing firms operating in the presents' rapidly changing and highly competitive market have been pressured to improve all aspects of operational performance; quality and customer response time and reduce cost of manufacturing. This research sought to examine the effect of lean manufacturing practices on the operational performance of Ethiopian army Adama garment industry. The study guided by three objective; To determine the extent to which Ethiopian army Adama garment industry have adopted lean manufacturing practices, To establish the effect of lean manufacturing practice on operational performance of Ethiopian army Adama garment industry and finally the challenge faced by the industry when implementing lean manufacturing. The study adapted a descriptive research design with the use of cross-sectional data. The target population was 297 Ethiopian army Adama garment industry employees from different departments, from this 121 respondents were used as sample. A questionnaire was used to collect primary data. Out of the 121 research instruments distributed, 107 questionnaires were collected and analyzed representing 88.4% response rate which was considered adequate. Data analysis was done with the use of SPSS which produced descriptive statistics and regression models used to present the results in tables and figures. The finding indicated that Ethiopian army Adama garment industry not well practiced lean manufacturing. It was also clear that Ethiopian army Adama garment industry had not seen an improvement in their operational performance. The effect of lean manufacturing on operational performance of Ethiopian army Adama garment industry was tasted against two operational performance metrics; product quality and on time delivery. The outcome showed that lean manufacturing practices; Just in Time, Total quality management, Total productive maintenance, and Human resource management are positively related to operational performance. Moreover, lean manufacturing practices have been employed to a small extent and have negatively affected operational performances to a large degree. The study also established that the most challenge in adopting lean manufacturing was lack of proper training/inadequate human resource development and the least was lack of resources. The study recommended that the Ethiopian army Adama garment industry should concentrate on all aspects of lean manufacturing practice to bring superior operational performance. Implementation process of these strategies should be given top priority during formulation of organization policies.
title: Biopolymers - facts and statistics 2022
title: Production capacities, processing routes, feedstock, land and water use
titleType: Subtitle
Creators: name: IfBB – Institute For Bioplastics And Biocomposites
Publisher: name: Hochschule Hannover
Year: 2023
Subjects: subject: 660 Technische Chemie

description: One of the main concerns of this publication is to furnish a more rational basis for discussing bioplastics and use fact-based arguments in the public discourse. Furthermore, “Biopolymers – facts and statistics” aims to provide specific, qualified answers easily and quickly for decision-makers in particular from public administration and the industrial sector. Therefore, this publication is made up like a set of rules and standards and largely foregoes textual detail. It offers extensive market-relevant and technical facts presented in graphs and charts, which means that the information is much easier to grasp. The reader can expect comparative market figures for various materials, regions, applications, process routes, agricultural land use, water use or resource consumption, production capacities, geographic distribution, etc.
description: Biopolymers - facts and statistics; 9