cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The low mass companion of HIP 45314 (HR 3672)
Creators: name: Adam, C.
name: Neuhäuser, R.
name: Mugrauer, M.
name: Schmidt, J. G.
name: Schmidt, T. O. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of a very low-mass companion to HIP 45314 (HR 3672) located about 2.7 arcsec north-west of HR 3672 A. With four years of epoch difference between the two observations obtained with the Very Large Telescope we can reject by more than 4 sigma that B would be a non-moving background object unrelated to A. HR 3672 A is a B 7-8 main sequence star with an age of 140 \pm 80 Myr and from the magnitude difference between HR 3672 A and B and the 2MASS magnitudes, we can estimate the magnitude of HR 3672 B (K_{s}=12.42 \pm 0.28 mag) and then, for age and distance of the primary star, using models, its luminosity and mass (0.2-0.5 M_sun). We present a reanalysis of the probable membership of HR 3672 A to the Platais 9 cluster, and introduce a new method for astrometric calibration of data without dedicated calibration images. In the deepest available image (co-add of all epochs) no additional companion candidates within 13 arcsec were detected down to 0.03 M_sun.
description: 11 pages, 12 figures, 6 tables
Additional file 1 of Intestine-derived α-synuclein initiates and aggravates pathogenesis of Parkinson’s disease in Drosophila
Creators: name: Liu, Wei
name: Lim, Kah-Leong
name: Tan, Eng-King
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Table S1: Fly stocks used in the experiments.
Walsh spaces containing smooth functions and quasi-Monte Carlo rules of arbitrary high order
Creators: name: Dick, Josef
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: primary: 11K38, 11K45, 65C05, secondary: 42C10,

description: We define a Walsh space which contains all functions whose partial mixed derivatives up to order $δ\ge 1$ exist and have finite variation. In particular, for a suitable choice of parameters, this implies that certain Sobolev spaces are contained in these Walsh spaces. For this Walsh space we then show that quasi-Monte Carlo rules based on digital $(t,α,s)$-sequences achieve the optimal rate of convergence of the worst-case error for numerical integration. This rate of convergence is also optimal for the subspace of smooth functions. Explicit constructions of digital $(t,α,s)$-sequences are given hence providing explicit quasi-Monte Carlo rules which achieve the optimal rate of convergence of the integration error for arbitrarily smooth functions.
Additional file 2 of Intestine-derived α-synuclein initiates and aggravates pathogenesis of Parkinson’s disease in Drosophila
Creators: name: Liu, Wei
name: Lim, Kah-Leong
name: Tan, Eng-King
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2. Table S2: Primers for qPCR analysis.
The Practice of Gender Auditing in Culture and Tourism Bureau, Amhara National Regional State, Ethiopia
Creators: name: Mersha, Yohannes
name: Mekonnen, Amanu
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: Gender auditing is an assessment tool used to assess the level of gender mainstreaming practice in a given organization. It is also a tool to promote gender mainstreaming practice by suggesting viable solutions for gender related problems. To know the level of gender mainstreaming practice in Amhara Regional State Culture and Tourism Bureau, a gender audit was conducted by using four major organizational dimensions (political will, staff accountability, organizational culture and technical capacity). Quantitative and qualitative data collection methods were employed. The quantitative data was analyzed using descriptive and inferential statistics. And, the qualitative data was analyzed through the thematic approach. The result of the study showed that the leaders of the bureau had low commitment to reinforce the proper integration of gender issues into the organizational activities of the bureau. The staff were also not accountable for gender activities since they lack the necessary skills to undertake various gender related technical activities such as gender analysis, gender budgeting or gender planning. The audit also found out that the organizational culture of the bureau was lesss gender friendly. Generally, it was concluded that the ANRS Culture and Tourism Bureau is left with much work to do with respect to implementing of gender mainstreaming strategy.
description: Ethiopian Journal of Social Sciences, Vol 4 No 1 (2018)
Recovering Redshift Distributions with Cross-Correlations: Pushing The Boundaries
Creators: name: Schmidt, Samuel
name: Ménard, Brice
name: Scranton, Ryan
name: Morrison, Christopher
name: McBride, Cameron
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Determining accurate redshift distributions for very large samples of objects has become increasingly important in cosmology. We investigate the impact of extending cross-correlation based redshift distribution recovery methods to include small scale clustering information. The major concern in such work is the ability to disentangle the amplitude of the underlying redshift distribution from the influence of evolving galaxy bias. Using multiple simulations covering a variety of galaxy bias evolution scenarios, we demonstrate reliable redshift recoveries using linear clustering assumptions well into the non-linear regime for redshift distributions of narrow redshift width. Including information from intermediate physical scales balances the increased information available from clustering and the residual bias incurred from relaxing of linear constraints. We discuss how breaking a broad sample into tomographic bins can improve estimates of the redshift distribution, and present a simple bias removal technique using clustering information from the spectroscopic sample alone.
description: 13 pages, 9 figures. Submitted to MNRAS
Exploring Human Mobility:Time-Informed pattern mining (TiPam) and Time-Aware Longest Common Subsequence (T-LCS)
Creators: name: anonymous, anonymous
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 401302
subject: Geospatial information systems and geospatial data modelling
classificationCode: 460502
subject: Data mining and knowledge discovery

description: Here, we introduce the Time-Informed Pattern Mining (TiPam) method for frequent pattern mining. TiPam generates frequent mobility patterns by incorporating critical time information, such as timestamps, duration, and time gaps, within a hierarchical structure, allowing for exploration across different levels. Additionally, we propose the Time-Aware Longest Common Subsequence (T-LCS) algorithm to measure the similarity between sequences. This algorithm enables the quantification of an individual's movement regularity and the comparison of similarity among people.
Generalized symplectic symmetric spaces
Creators: name: Bochenski, Maciej
name: Tralle, Aleksy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C15

description: Bielavsky introduced and investigated the class of symmetric symplectic spaces, that is, symmetric spaces endowed with a symplectic form invariant with respect to symmetries. Since the theory of symmetric spaces has generalizations, we ask a question about their possible symplectic versions. We do construct such generalizations and extend some of Bieliavsky's results. In particular, we classify all 3-symmetric symplectic spaces.
Explicit constructions of quasi-Monte Carlo rules for the numerical integration of high dimensional periodic functions
Creators: name: Dick, Josef
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: primary: 11K38, 11K45, 65C05, secondary: 65D30, 65D32,

description: In this paper we give explicit constructions of point sets in the $s$ dimensional unit cube yielding quasi-Monte Carlo algorithms which achieve the optimal rate of convergence of the worst-case error for numerically integrating high dimensional periodic functions. In the classical measure $P_α$ of the worst-case error introduced by Korobov the convergence is of $\landau(N^{-\min(α,d)} (\log N)^{sα-2})$ for every even integer $α\ge 1$, where $d$ is a parameter of the construction which can be chosen arbitrarily large and $N$ is the number of quadrature points. This convergence rate is known to be best possible up to some $\log N$ factors. We prove the result for the deterministic and also a randomized setting. The construction is based on a suitable extension of digital $(t,m,s)$-nets over the finite field $\integer_b$.
Metaheuristic Optimization: Algorithm Analysis and Open Problems
Creators: name: Yang, Xin-She
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 90C26

description: Metaheuristic algorithms are becoming an important part of modern optimization. A wide range of metaheuristic algorithms have emerged over the last two decades, and many metaheuristics such as particle swarm optimization are becoming increasingly popular. Despite their popularity, mathematical analysis of these algorithms lacks behind. Convergence analysis still remains unsolved for the majority of metaheuristic algorithms, while efficiency analysis is equally challenging. In this paper, we intend to provide an overview of convergence and efficiency studies of metaheuristics, and try to provide a framework for analyzing metaheuristics in terms of convergence and efficiency. This can form a basis for analyzing other algorithms. We also outline some open questions as further research topics.
description: 14 pages 2 figures. arXiv admin note: substantial text overlap with arXiv:1208.0527
The Tenants of Emperor Haile Selassie I: An Examination of Landlord-Tenant Relationship
Creators: name: Bogale, Wagaw
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: Different scholars have examined Ethiopian tenancy from various angles. Previous studies on the subject consistently observe that the bulk of the southern peasants became tenants following the expansion of Ethiopian Empire State in the late nineteenth century and tenancy in the South was more common and more onerous than it was in the north. In addition, there was little reason to believe that the Imperial Ethiopian Government provided practical legal provisions to improve the conditions of tenants in Ethiopia. Nevertheless, the position of most scholars regarding the condition of tenants as very gloomy is very difficult to accept. A closer examination of the relationship that existed between the Bétä Rist, the management institution for the private property of Emperor Haile Selassie I, and the monarch’s tenants appears to suggest otherwise. Examining the historical processes that gave rise to the reduction of many peasants to the status of tenants; its intensity when analysed from two crudely delimited geographical regions (north and south), and the prerequisites that were necessary to undertake any land reform policy in the country are, however, beyond the scope of this paper. This study focuses on how the Bétä Rist regulated landlord-tenant relationships in the postItalian period. It examined the personal, refers to Emperor Haile Selassie I, and institutional concerns taken to protect their rights as a tenant, and improve their conditions in light of government initiatives made to improve the conditions of tenants by taking into account the following basic organizing concepts: types of tenants, forms of rentals, security of tenure, and tenancy agreements. The researcher approached the issue qualitatively. The study used archival materials culled from Welde Mesqel Tariku Memorial Research Centre of the Institute of Ethiopian Studies and from secondary literature.
description: Ethiopian Journal of Social Sciences, Vol 3 No 2 (2017)
Probe spectroscopy of quasienergy states
Creators: name: Silveri, Matti
name: Tuorila, Jani
name: Kemppainen, Mika
name: Thuneberg, Erkki
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The present qubit technology, in particular in Josephson qubits, allows an unprecedented control of discrete energy levels. This motivates a new study of the old pump-probe problem, where a discrete quantum system is driven by a strong drive and simultaneously probed by a weaker one. The strong drive is included by the Floquet method and the resulting quasienergy states are then studied with the probe. We study a qubit where the harmonic drive has a significant longitudinal component relative to the static equilibrium state of the qubit. Both analytical and numerical methods are used to solve the problem. We present calculations with realistic parameters and compare the results with recent experimental results. A short introduction to the Floquet method and the probe absorption is given.
description: 12 pages, 9 figures
Reconstructing History from the Grave Yards of Ethiopia’s Past: The Case of Tigray
Creators: name: Ferede, Wuhibegezer
name: Haile, Gezae
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: his research aimed at locating, identifying and documenting graveyards and funeral rites for reconstructing the life history and achievements of prominent personalities in Ethiopia’s past and theier social philosophy of death as depicted in grave markers and oral discourses of the society in the Regional State of Tigray. Accordingly, data was collected through in-depth informant interview about funeral rituals and rites, field observation for deciphering information from grave markers, and document analysis for reviewing historical records such as eyewitness accounts. The data was collected from Churches and Monasteries in Mekelle, Tembien, Adwa, Aksum, Maychewu and their environs. Hence, this paper traverses as far as the fourth century to examine the Christianization process in Ethiopia based on Abba Selama Kesate Berhane’s grave markswhich is found at Enda Abba Selama in Tembien. It also examined the achievement and lives of St. Frumentius, Abune Yohanis, Abba Merha Christos, Christopher Dagma, Bashai Awallom and Rass Alula, and traced the missing link in their historical biographic narratives. The social philosophy about death, funeral rituals and manifestation of grief were also analyzed from oral narratives and inference from practices. The critical examination of the collected data provided baseline information about the lives of unknown but historically important personalities such as Christopher Dagma, son of Vasco Dagma, who came to Ethiopia leading the Portuguese soldiers in the war against Gragn. It also shed light on some controversial issues such as the periodization of the Christianization of Ethiopia and Ethio-Eritrea relations.. Furthermore, the study attested that the funeral rituals and the bio-data carved on physical setting of the cemeteries and inscriptions(symbols) had immense dataset about family line, demographic and social pattern, biographies, social status, causes and the society’s view of death in the study area. As these graveyards are deteriorating and disappearing very fast, the study emphasizes the urgent need for the deployment of a multidisciplinary research team in order to digitize, document and rescue the vanishing dataset in these sites.
description: Ethiopian Journal of Social Sciences, Vol 3 No 2 (2017)
Additional file 5 of Intestine-derived α-synuclein initiates and aggravates pathogenesis of Parkinson’s disease in Drosophila
Creators: name: Liu, Wei
name: Lim, Kah-Leong
name: Tan, Eng-King
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5. Fig. S1 Expression of GFP in adult brains by elav-GAL4 and esg-GAL4. Fig. S2 Dysbiosis aggravates the pathology of Parkinson’s disease in the intestine. Fig. S3 Intestinal α-syn triggers the DUOX-ROS-JNK pathway.
Orbital resonances around Black holes
Creators: name: Brink, Jeandrew
name: Geyer, Marisa
name: Hinderer, Tanja
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We compute the length and timescales associated with resonant orbits in the Kerr Metric for all orbital and spin parameters. Resonance induced effects are potentially observable when the Event Horizon telescope resolves the inner structure of Sgr A*, space-based gravitational wave detectors record phase-shifts in the waveform during the resonant passage of a neutron star as it spirals in to the black hole and in the frequencies of quasi periodic oscillations for accreting black holes. The onset of geodesic chaos for non-Kerr spacetimes should occur at the resonance locations quantified here.
description: 5 pages, 5 figures
Testing f(R)-theories using the first time derivative of the orbital period of the binary pulsars
Creators: name: De Laurentis, Mariafelicia
name: De Martino, Ivan
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we use one of the Post-Keplerian parameters to obtain constraints on f(R)-theories of gravity. Using Minkowskian limit, we compute the prediction of f(R)-theories on the first time derivative of the orbital period of a sample of binary stars, and we use our theoretical results to perform a comparison with the observed one. Selecting a sample of relativistic binary systems we estimate the parameters of an analytic f(R)-gravity. We find that the theory is not ruled out if we consider only the double neutron star systems, and in this case we can cover the existing gap between the General Relativity prediction and the observed data.
description: 10 pages, 3 figures, 2 tables Accepted for publication in Monthly Notices of the Royal Astronomical Society
title: Design and Simulation of a Nanoscale Threshold-Logic Multiplier
Creators: name: Sulieman, Mawahib Hussein
name: Mahmoud, Mariam
name: Remonda, Raafat
name: Reda, Gehad
Publisher: name: TEM Journal
Year: 2019

description: Multiplication is one of the most important operations in microprocessors and digital signal processing systems. Different multiplier architectures have been proposed in the literature. One of the most widely used architecture is the Wallace tree multiplier. This multiplier is known for its high speed. However, it occupies a large area. In this paper, we used Threshold Logic Gates instead of conventional logic gates to reduce the area. The multiplier was designed in 65nm CMOS technology, and achieved 28% reduction in the number of transistors compared to the one with conventional logic gates. It also achieved a lower power-delay-product.
Efficient method of finding scaling exponents from finite-size Monte-Carlo simulations
Creators: name: Mandre, Indrek
name: Kalda, Jaan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Monte-Carlo simulations are routinely used for estimating the scaling exponents of complex systems. However, due to finite-size effects, determining the exponent values is often difficult and not reliable. Here we present a novel technique of dealing with the problem of finite-size scaling. This new method allows not only to decrease the uncertainties of the scaling exponents, but makes it also possible to determine the exponents of the asymptotic corrections to the scaling laws. The efficiency of the technique is demonstrated by finding the scaling exponent of uncorrelated percolation cluster hulls.
description: The "previous version" of this is arXiv:0804.1911. This version is published in EPJB
Challenges and Survival Strategies of People Dislocated due to Tana Beles Integrated Sugar Factory: The Case of Bambajihua Relocation Site, Benishangul Gumuz Region
Creators: name: Aynalem, Seblewongiel
name: Muket, Asfaw
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: Development-induced dislocation could be an opportunity or a challenge for the dislocated people as well as the host community. This study was conducted to examine the challenges and survival strategies of people dislocated due to Tana Beles Integrated Sugar Factory (TBISF) project at Bambajihua relocation site, in Benishangul Gumuz Regional State (BGRS). TBISF project has led to the relocation of more than 300 people in Bambajihua site only since 2004 E.C. This study employed qualitative research method and a case study design. In-depth interviews with purposively selected eight dislocated individuals, two focus group discussions, and four key informant interviews with experts were conducted. The data was thematically analyzed. The findings showed that the dislocation process was highly chaotic. The dislocated people were forced to leave their residence in short notice and with no house constructed in the new site. People were forced to reside in trees till they build their shelter. Neither the government personnels nor the sugar factory project coordinators assisted the dislocated community in transporting their materials to the new settlement site. During their arrival in the new residence, the reception they got from the local administration and the host community was hardly welcoming. There were also inconsistencies and favortismin settling compensations. Worsenning the situation for the resettles, the host community was not willing to share its grazing land and water with them. . The only social service organizations available in the relocation site were a school, a health centre, and a police office. However, the institutions were not well equipped with professionals and other basic utilities. Even though the TBSIF project promised to construct roads and to facilitate access to electricity in the new relocation site, it has been five years and the promises remain unfulfilled. The dislocated people also complained about lack of response to their demand for a pace of worship.There is security problem in Bambajihua. Properties are stolen and conflicts are common between the host and dislocated communities. The survival strategies of dislocated people included renting farmland and grazing land from the host community, digging underground well for drinking water, tolerating differences and using traditional conflict resolution mechanisms, and renting of privately owned houses for spiritual purpose. The study implies the dislocated people should get proper attention from Tana Beles Integrated Sugar Factory project coordinators and humanitarian service providers. Large scale studies need to be conducted to assess the impact of development-induced dislocation upon the resettles and the host communities in rural settings.
description: Ethiopian Journal of Social Sciences, Vol 3 No 2 (2017)
Moderate interaction between 3d- and 4f-electrons and ferrimagnetism in Co-doped GdFeAsO
Creators: name: Shang, T.
name: Yang, L.
name: Cornell, N.
name: Ronning, F.
name: Chen, Y.
name: Jiao, L.
name: Chen, J.
name: Howard, A.
name: Thompson, J. D.
name: Zakhidov, A.
name: Salamon, M. B.
name: Yuan, H. Q.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We synthesized a series of GdFe$_{1-x}$Co$_x$AsO polycrystalline samples ($0 \leq x \leq 1$) by using a solid state reaction method and present a systematic study on the physical properties by means of electrical resistivity $ρ(T)$, magnetic susceptibility $χ(T)$ and specific heat $C(T)$. The parent compound GdFeAsO undergoes a spin-density-wave (SDW) transition associated with Fe 3d-electrons around 130 K, followed by an antiferromagnetic (AFM) transition of Gd at $T^\textup{Gd}_\textup{N} \approx$ 4 K. The SDW transition is quickly suppressed by Fe/Co substitution and superconductivity appears in a narrow doping range of $0.05 < x < 0.25$, showing a maximum $T_\textup{sc}$ $\approx$ 20 K around $x = 0.1$. On the other hand, the 4f-electrons of Gd are antiferromagnetically ordered over the entire doping concentration ($0 \leq x \leq 1$), while the Co 3d-electrons exhibit a ferromagnetic (FM) transition above $x \approx 0.8$, with the Curie temperature ($T^\textup{Co}_\textup{C}$) reaching 75 K in GdCoAsO. These two magnetic species (Gd and Co) are coupled antiferromagnetically to give rise to ferrimagnetic behavior in magnetic susceptibility on the Co-rich side. For $0.7 \leq x < 1.0$, the system undergoes a possible magnetic reorientation below $T^\textup{Gd}_\textup{N}$.
description: 8 pages, 8 figures
Additional file 1 of Global early replication disrupts gene expression and chromatin conformation in a single cell cycle
Creators: name: Santos, Miguel M.
name: Johnson, Mark C.
name: Fiedler, Lukáš
name: Zegerman, Philip
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Contains Figures S1-5, which are supplementary data in support of the main figures.
Appraisal of Issues Affecting Soil-Steps Building for Sustainable Farmland Management in High Potential District, Ethiopia
Creators: name: Belay, Mehretie
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: Water caused soil degradation is a serious problem on farmlands in highland Ethiopia. Considerable investments in farmland conservation have been made to manage the problem in the past decades. However, the efforts have not been so pervasive to trim-down the danger to a desirable scale. This paper examines issues that impact application of soil-steps (bunds) as sustainable farmland management technology (SFLMT) by smallholder farmers in one of the high-potential production districts of northwest Ethiopia; Dangila woreda. Mixed method research designs involving concurrent acquisition and interpretation of quantitative and qualitative data were used in the study. Data were acquired from 201 randomly chosen farming households during the harvest seasons of 2011 and 2012. Structured questionnaire survey, participatory field observation, key informant interview and focus group discussion were mechanisms employed during the data acquisition. Descriptive statistics (means, standard deviations and percentiles), Chi-square test, t-test and the binary logit model were in use to interpret the quantitative data. The qualitative information was textually narrated to augment the quantitative result. The findings of the investigation confirm that age of the household head, the number of household members, the slope of the farmland, the size of the farmland household held, the households’ participation in indigenous labour-sharing activities and the number of farm tools owned were significantly influenced by the building of soil-steps as SFLMT in the study district. Then again, taking part in off-farm activities and pest invasions were considerably hindering farmers from building soil-steps on their farms. In general, the results indicate that households’ access to livelihood material goods are key promoters for farmers’ implementation of soil-steps on their farmlands. Local resource conservation and development involvements should thus ponder on convalescing farmers’ material endowments to improve their capability to use soil-steps as SFLMT in their farming activities.
description: Ethiopian Journal of Social Sciences, Vol 3 No 2 (2017)
Tidal Instability and Superhump by a Wave-Wave Resonant Model
Creators: name: Kato, Shoji
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: On a disk deformed to a non-axisymmetric form, a set of oscillations can be excited by their resonant interaction through the disk deformation (Kato et al. 2011). This resonant instability process has been proposed to suggest a possible cause of the high-frequency quasi-periodic oscillations (HF QPOs) observed in black-hole low-mass X-ray binaries. In the present paper, we examine whether the above-mentioned wave-wave resonant process can describe the tidal instability and superhump in dwarf novae. The results show that the process seems to well describe the observations. If this process is really the cause of the tidal instability and superhump, a two-armed oscillation with high frequency roughly on the magnitude of three times the orbital frequency is present on disks, although its expected amplitude may be small.
description: 16 pages, 6 figures, accepted in PASJ
“There Was A Country”: The Reminiscence Of Nigeria-Biafra Civil War And Elites’ Perception Of Nation And Nationalism In Nigeria.
Creators: name: EKHATOR, Osaisonor Godfrey
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: Much debate and controversy dominate almost everydiscussion on the Nigerian civil war. The most recent could be described as an intellectual war and ethnocentrism. These were characteristics of the responses and reactions to the book, “THERE WAS A COUNTRY…” by Chinua Achebe. Over the years, scholars and political analysts have written books narrating different versions of the civil war, from the remote to immediate causes of the bloody thirty months war. To some, these efforts are exaggerated accounts of the war; hence, they promote ethnic bigotry. The question is how national integration can be achieved amidst continued ethnic dichotomy in Nigeria. Chinua Achebe has used his literary prowess to express in varying degree; the quantum of disappointment experienced by Nigerians due to ethnic cleavages. It is conspicuous that ethnic diversity has spurred criticisms to and underplayed the clarion call for nationalism by Achebe’s memoir. This paper uses historical analysis with a synopsis of the book, “THERE WAS A COUNTRY”, in the discussion of Chinua Achebe’s conception of nationalism on account of the civil war. In this paper, I argue that the memories of the Nigeria-Biafra civil war disenchant the spirit of nationalism in Nigerians. They (the Nigerian masses), therefore, relying on the perception of their ethnic political elite are lead to pursue ethnic nationalism. In otherwise, the the masses’ understanding of nationalism is dictated and based on the definition given to it by the political leaders .
description: Ethiopian Journal of Social Sciences, Vol 3 No 1 (2017)
Limit theorems for reflected Ornstein-Uhlenbeck processes
Creators: name: Huang, Gang
name: Mandjes, Michel
name: Spreij, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F05, 60F10, 90B22

description: This paper studies one-dimensional Ornstein-Uhlenbeck processes, with the distinguishing feature that they are reflected on a single boundary (put at level 0) or two boundaries (put at levels 0 and d>0). In the literature they are referred to as reflected OU (ROU) and doubly-reflected OU (DROU) respectively. For both cases, we explicitly determine the decay rates of the (transient) probability to reach a given extreme level. The methodology relies on sample-path large deviations, so that we also identify the associated most likely paths. For DROU, we also consider the `idleness process' $L_t$ and the `loss process' $U_t$, which are the minimal nondecreasing processes which make the OU process remain $\geqslant 0$ and $\leqslant d$, respectively. We derive central limit theorems for $U_t$ and $L_t$, using techniques from stochastic integration and the martingale central limit theorem.
Additional file 2 of Global early replication disrupts gene expression and chromatin conformation in a single cell cycle
Creators: name: Santos, Miguel M.
name: Johnson, Mark C.
name: Fiedler, Lukáš
name: Zegerman, Philip
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2. Review history.
BRST-Invariant Deformations of Geometric Structures in Topological Field Theories
Creators: name: Bytsenko, A. A.
name: Chaichian, M.
name: Tureanu, A.
name: Williams, F. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study a Lie algebra of formal vector fields $W_n$ with its application to the perturbative deformed holomorphic symplectic structure in the A-model, and a Calabi-Yau manifold with boundaries in the B-model. A relevant concept in the vertex operator algebra and the BRST cohomology is that of the elliptic genera (the one-loop string partition function). We show that the elliptic genera can be written in terms of spectral functions of the hyperbolic three-geometry (which inherits the cohomology structure of BRST-like operator). We show that equivalence classes of deformations are described by a Hochschild cohomology theory of the DG-algebra ${\mathfrak A} = (A, Q)$, $Q =\bar{\partial}+\partial_{\rm deform}$, which is defined to be the cohomology of $(-1)^n Q +d_{\rm Hoch}$. Here $\bar{\partial}$ is the initial non-deformed BRST operator while $\partial_{\rm deform}$ is the deformed part whose algebra is a Lie algebra of linear vector fields ${\rm gl}_n$. We discuss the identification of the harmonic structure $(HT^\bullet(X); HΩ_\bullet(X))$ of affine space $X$ and the group ${\rm Ext}_{X}^n({\cal O}_{\triangle}, {\cal O}_{\triangle})$ (the HKR isomorphism), and bulk-boundary deformation pairing.
description: 44 pages. arXiv admin note: text overlap with arXiv:0909.3643, arXiv:hep-th/0210057, arXiv:math/0308080, arXiv:hep-th/0405232 by other authors
The Administration of Italian Buildings & Holdings in Gondar Town (1941-1974)
Creators: name: Tayachew, Girma
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: The city of Gondar was established in 1636 as permanent seat for the Christian Kingdom. Italians also made Gondar in their five year occupation in the country a major city by building of more than 352 houses with new master plan for the first time. Between 1936 and 1941 Gondar was decorated with Italian buildings and architectural designs that laid the foundation for the present master plan. It is perplexing how members of the royal family took all holdings found in Gondar after liberation. The main objective of this study is to investigate how Hayle Silassie I appropriated Italian buildings in Gondar town for his personal benefits. So far, this peculiar event has not been studied by any historian or professional to this date. In conducting this study, the researcher consulted pertinent archives at North Gondar Zone Administrative office. In addition, attempts have been made to gather qualitative data through interviews and critical review of published and unpublished literatures. The study reveals that from morrow of liberation, it was patriots’ lack of political nerve which allowed Hayle Selasie I and his families to seize Italians’ buildings and holdings including lands and houses as “enemy’s property” and enabled them to utilize it as their own throughout the period (1941-1974. The officials enjoyed and led luxurious life at Gondar and Addis Ababa without facing the troubles of daily hardwork. Their only duties were the collection of tribute from peasants, and follow ups on the sources of threats and security issues etc. As these officials left the city following the down fall of Hayle Silassie I’s regime in 1974, the Derg confiscated and nationalized all their belongings including those Italian buildings.
description: Ethiopian Journal of Social Sciences, Vol 3 No 1 (2017)
Kerr-lens Mode Locking Without Nonlinear Astigmatism
Creators: name: Yefet, Shi
name: Jouravsky, Valery
name: Pe'er, Avi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a Kerr-lens mode locked folded cavity using a planar (non-Brewster) Ti:sapphire crystal as a gain and Kerr medium, thus cancelling the nonlinear astigmatism caused by a Brewster cut Kerr medium. Our method uses a novel cavity folding in which the intra-cavity laser beam propagates in two perpendicular planes such that the astigmatism of one mirror is compensated by the other mirror, enabling the introduction of an astigmatic free, planar-cut gain medium. We demonstrate that this configuration is inherently free of nonlinear astigmatism, which in standard cavity folding needs a special power specific compensation.
description: 4 pages, 5 figures
Additional file 1 of Oral health-related quality of life in rheumatoid arthritis: a comparative analysis
Creators: name: Parsaei, Amirhossein
name: Mehdipour, Aida
name: Ghadimi, Hamidreza
name: Mohammadi Kooshki, Ashkan
name: Shajari, Parisa
name: Masoumi, Maryam
name: Torabi, Pouya
name: Azizi, Hossein
name: Amini, Behnam
name: Karimi, Hanie
name: Dehghanbanadaki, Hojat
name: Aghaali, Mohammad
name: Moradi, Soroush
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Table 1. Temporomandibular joint disorder questionnaire.
Galilean invariance and the consistency relation for the nonlinear squeezed bispectrum of large scale structure
Creators: name: Peloso, Marco
name: Pietroni, Massimo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the constraints imposed on the nonlinear evolution of the Large Scale Structure (LSS) of the universe by galilean invariance, the symmetry relevant on subhorizon scales. Using Ward identities associated to the invariance, we derive fully nonlinear consistency relations between statistical correlators of the density and velocity perturbations, such as the power spectrum and the bispectrum. These relations are valid up to O (f_{NL}^2) corrections. We then show that most of the semi-analytic methods proposed so far to resum the perturbative expansion of the LSS dynamics fail to fulfill the constraints imposed by galilean invariance, and are therefore susceptible to non-physical infrared effects. Finally, we identify and discuss a nonperturbative semi-analytical scheme which is manifestly galilean invariant at any order of its expansion.
description: 29 pages, 7 figures
Public Budget Making in Nigeria: A Historical Analysis of its Legal Framework, 1954 – 1999
Creators: name: OGUNYEMI, Adetunji Ojo
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: his study analyses the legal framework for the prudent management of Nigeria’s revenue and expenditure from 1954 up to 1999. It shows and discusses the constitutional and statutory provisions that were enacted for the dispensation and regulation of public finances particularly the federal budget, and how these provisions either changed or continued in the period. In addition, the paper analyses the significant provisions on prudence as they concern federal budget and the due process of public accountability in Nigeria especially since the consolidation of the country into a federation of multiple fiscal powers and responsibilities. The study concludes that constitutional laws on budgeting in Nigeria have always been sufficiently expressive on the requirements of the due process of financial planning and on the prohibition of corrupt acts and imprudent use of public resources; and that if the Nigerian financial system today is still bedevilled by misappropriation of those resources it will not be due to insufficient legal framework but the refusal to sanction its breach.
description: Ethiopian Journal of Social Sciences, Vol 3 No 1 (2017)
Pedestrian Knowledge, Attitudes and Practices in Urban Walking Environments Among Bahir Dar, Gondar and Dessie Towns, Ethiopia
Creators: name: Mekonnen, Fesseha Hailu
name: Haile, Fentanesh
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: Even though walking is one of the most important modes of transport, it is often undervalued by urban planners and policy makers. This study aimed at assessing pedestrians’ knowledge on sidewalk utilization and their attitudes toward sidewalk facilities. A cross-sectional data on pedestrians’ knowledge, attitudes and practices were collected from three towns. Using population proportion sampling procedure the sample size for the study was determined to be 600. The 95% degree of confidence was also used. Respondents were asked to answer three groups of questions focusing on their knowledge, attitudes and practices related to sidewalks. Findings show that respondents have adequate knowledge on sidewalk facilities’ utilization, but they are poor practical implementers. There was no statistically significant difference at the p>.05 level in attitude scores for three significances: F (2,432) =4.6. Proper management of the available sidewalk facilities should be given priority by each city administrations. A more detailed study of each city’s traffic management and planning could bring long term solutions for pedestrian problems.
description: Ethiopian Journal of Social Sciences, Vol 3 No 1 (2017)
Towards radiation pressure acceleration of protons using linearly polarized ultrashort petawatt laser pulses
Creators: name: Kim, I Jong
name: Pae, Ki Hong
name: Kim, Chul Min
name: Kim, Hyung Taek
name: Sung, Jae Hee
name: Lee, Seong Ku
name: Yu, Tae Jun
name: Choi, Il Woo
name: Lee, Chang-Lyoul
name: Nam, Kee Hwan
name: Nickles, Peter V.
name: Jeong, Tae Moon
name: Lee, Jongmin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Particle acceleration using ultraintense, ultrashort laser pulses is one of the most attractive topics in relativistic laser-plasma research. We report proton/ion acceleration in the intensity range of 5x1019 W/cm2 to 3.3x1020 W/cm2 by irradiating linearly polarized, 30-fs, 1-PW laser pulses on 10- to 100-nm-thick polymer targets. The proton energy scaling with respect to the intensity and target thickness was examined. The experiments demonstrated, for the first time with linearly polarized light, a transition from the target normal sheath acceleration to radiation pressure acceleration and showed a maximum proton energy of 45 MeV when a 10-nm-thick target was irradiated by a laser intensity of 3.3x1020 W/cm2. The experimental results were further supported by two- and three-dimensional particle-in-cell simulations. Based on the deduced proton energy scaling, proton beams having an energy of ~ 200 MeV should be feasible at a laser intensity of 1.5x1021 W/cm2.
description: 33 pages
Additional file 1 of Transition in eye gaze as a predictor of emergence from general anesthesia in children and adults: a prospective observational study
Creators: name: Kinoshita, Michiko
name: Sakai, Yoko
name: Katome, Kimiko
name: Matsumoto, Tomomi
name: Sakurai, Shizuka
name: Jinnouchi, Yuka
name: Tanaka, Katsuya
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1 .
Local Response to Italian Occupation in Yilmana Dénsa District (West Gojjam) and the Battles of Yizora and Yidibi (1937)
Creators: name: Eskezia, Geremew
Publisher: name: Ethiopian  Journal of Social Sciences
Year: 2018

description: During the Italian Occupation Period (1936-41), Yilmana Dénsa district was one of the most renowned centers of patriotic resistance in Gojjam. Italian authorities successively made Yilmana Dénsa a center of Vice Resident (1936-37), Resident (1937-38) and Commissionership (1939-41) mainly with the purpose of controlling the patriotic movement there. Nevertheless, they were confined only at Adét town and Däbrä Mäwi due to the intensification of patriotic resistance in the district and its surroundings. Among others, in 1937the patriots of Yilmana Dénsa district defeated fascist Italian forces at the battles of Yizora and Yidibi. Afterwards, the patriots’ resistance in the district continued right up to the independence of the country in 1941.
description: Ethiopian Journal of Social Sciences, Vol 3 No 1 (2017)