cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anisotropic isoparametric hypersurfaces in Euclidean spaces
Creators: name: Ge, Jianquan
name: Ma, Hui
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C40

description: In this note, we give a classification of complete anisotropic isoparametric hypersurfaces, i.e., hypersurfaces with constant anisotropic principal curvatures, in Euclidean spaces, which is in analogue with the classical case for isoparametric hypersurfaces in Euclidean spaces. On the other hand, by an example of local anisotropic isoparametric surface constructed by B. Palmer, we find that anisotropic isoparametric hypersurfaces have both local and global aspects as in the theory of proper Dupin hypersurfaces.
THE PRACTICE AND CHALLENGES OF IMPLEMENTING  COOPERATIVE  LANGUAGE LEARNING METHOD: ARBAMINCH  LIMAT MELES  ZENAWI  MEMORIAL, ABAYA  AND CHANO  DORGA  SECONDARY  SCHOOLS IN  FOCUS
Creators: name: BIRKNESH ONKIE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2010

description: The purpose of this study was to identify the practices and challenges of Cooperative Language
Learning (CLL). The study was conducted in Arbaminch Limat Meles Zenawi Memorial, Abaya
and Chano Dorga secondary schools.  These schools  were selected by  purposive sampling
technique with special emphasis given to the practices of CLL in the classroom,  the challenges
that face  on the practice of CLL in English classroom and strategies used to manage  those
challenges. To achieve the objective of the study, a sample of 98 students from Arbaminch Limat
Meles Zenawi Memorial, 168 students from Abaya and 97 students from Chano Dorga secondary
school were selected by simple random sampling  techniques. Accordingly, 6 teachers who teach
English in those grades were selected by purposive sampling technique. Regarding to the design
of research employed the research used descriptive survey method. The instruments used in this
study were questionnaire, interview and observation. Both  quantitative  and qualitative data
analysis were employed in this study. Then, the quantitative data was analyzed using frequency,
percentage, and mean value whereas the qualitative data was interpreted with  narrations. The
finding of the study revealedthat the practicability of cooperative learning in the English classes
were poor. It was found that teachers did not offer the chance for all students equally to  reflect
what they discussed in their group. Only few students or the active students present the points
what they discussed.The arrangement of chairs and tables not suitable to work different group
activities as it was observed.The chairs and tables were not easily movable. Finally, based on the
above  findings, the  following recommendations were forwarded.English teachers need training
on how to teach their students incooperatively. Thesuitability of chairs and tables have their own
impact on the teachers to implement CL. The first step of learning should be arranging classroom
conditions  in the way suitable  to implement different kinds of CLs. So that the administrators of
the schools should give due attention to the practicability of CL  and should provide  suitable
chairs and tables.
QCD Analysis of the Polarized Deep-Inelastic World Data
Creators: name: Blümlein, Johannes
name: Böttcher, Helmut
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The results of a recent next-to-leading order QCD analysis of the world data on polarized deep inelastic scattering are reported. New parameterizations are derived for the quark and gluon distributions, accounting for the massive Wilson coefficient for the charm quarks, and the value of $α_s(M_z^2)$ is determined with correlated errors. We obtain $α_s^{\rm NLO}(M_Z^2)= 0.1132 {array}{l} + 0.0056 -0.0095 {array}$. Limits on potential higher twist contributions to the structure function $g_1(x,Q^2)$ are derived. We also compare to the results obtained by other groups.
description: 6 pages, 3 figures, various style files, Contribution to the Proceedings of HiX2010, Newport News, October, 2010
THE WASH BACK EFFECT OF GRADE 8 ENGLISH LANGUAGE  REGIONAL EXAMINATION ON ENGLISH LANGUAGE TEACHERS  ACTUAL CLASSROOM PRACTICES
Creators: name: GETACHEW LEGESSE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The intent of this thesis was  to identify the washback  effect of grade 8  English Language
Regional Examination on ELTs actual classroom practices. To achieve this objective, the
thesis was designed to be descriptive research. Accordingly, the researcher used  three tools
of  data collection:  observation, questioner, and interview. Through observation the
researcher observes the lessons and activities in correspondence to the time allotment and
the materials used by ELTs. The questioner and the interview items were used to collect data
about the washback effect on ELTs methods of teaching, ways of material selection and ELTs
ways of assessment. In order to undertake this study, descriptive survey research design was
used and both qualitative and quantitative ways of data analysis techniques were employed.
The data obtained through questioner are analyzed in a qualitative way by using SPSS
(Statistical Package for Social Science)  version20 was used. This was  analyzed using
descriptive statics such as standard deviation, mean and percentage will be used. Finally, the
mean and computed  percentage of each variable are expressed interims of tables and
interpreted accordingly based on the data obtained. Whereas, the data obtained through
interview and observation were analyzed in a qualitatively in a narrative way. The finding of
this study reveals that the washback effect of grade 8 ELRE has a positive washback effect on
ELTs methods of teaching. This conclusion was made because when ELTs are teaching their
students they don’t narrow down the curriculum to the areas that where most probably to be
tested. The other finding of this study is also ELRE has a negative wash back effect on ELTs
ways of material selection. This is  true when ELTs teach their students,  they don’t relay up
on students textbooks and teachers guide alone. In addition to these,  they use various
reference books. Concerning the washback and assessment, the grade 8 ELRE has a negative
washback effect on ELTs ways of assessment. This conclusion was made because the analysis
shows that ELTs don’t assess the entire language skills of their students.
Mesoscopic rings with Spin-Orbit interactions
Creators: name: Berche, Bertrand
name: Chatelain, Christophe
name: Medina, Ernesto
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A didactic description of charge and spin equilibrium currents on mesoscopic rings in the presence of Spin-Orbit interaction is presented. Emphasis is made on the non trivial construction of the correct Hamiltonian in polar coordinates, the calculation of eigenvalues and eigenfunctions and the symmetries of the ground state properties. Spin currents are derived following an intuitive definition and then a more thorough derivation is built upon the canonical Lagrangian formulation that emphasizes the SU(2) gauge structure of the transport problem of spin 1/2 fermions in spin-orbit active media. The quantization conditions that follow from the constraint of single-valued Pauli spinors are also discussed. The targeted students are those of a graduate Condensed Matter Physics course.
THE EFFECTS OF ENGLISH  LANGUAGE  CLUB  ACTIVITIES  ON  STUDENTS’    LISTENING  AND SPEAKING  SKILLS  AND  ATTITUDE  CHANGE: WOLDEHANE  PREPARATORY SCHOOL IN FOCUS
Creators: name: ZEKARIAS ZEMA
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Enlish Lannguage Teaching in Ethiopian secondary schools is bound  in the classrooms.
This is partly because of the absence of research based working cases of the effects of
English language clubs.  This experimental study, therefore, examined the Effects of speaking
and listening club activities on students speaking and listening and  their attitude to club
activities.  Sixty students were  selected for the purpose of which (n=30) were experimental
and the other (n=30) were the control group. Data was collected using speaking and listning
tests (pre and post) and attitude questionnaire. The statistical results of the study showed that
there was a significant mean difference between the scores of students’ listening and
speaking tests in favour of the experimental group. This revealed that English Language
Clubs have improved students’ test result of listening    and  speaking compared to the
classroom only approach. As the  independent t-test values of the speaking test indicated (t
(10.04), df=58, p=0.00) was found to be statistically significant. In the same way, as
inferential statistical values of the independent t-test for listening test indicated (t (9.643),
df=58, p=0.00), it was found to be statistically significant. Similiraly, the students’ atitude to
English Language Club activities has increased since  the paired samples t-test values (t
(4.25), df =28, p=0.000) was significant at 0.05 level of significance. Consequently, it was
concluded that English Language Clubs can significantly improve students speaking and
listening ability and can positively influence students’ attitude to club activities. Therefore,
English Language Clubs should be adopted to wider scale of Ethiopian secondary schools.
Nevertheless, as this study focused onlyon two skills, the researcher suggests future studies
may need to further focus on the effects of other skills.
Anisotropic electron transport in the nuclear pasta phase
Creators: name: Pelicer, Mateus R.
name: Antonelli, Marco
name: Menezes, Débora P.
name: Gulminelli, Francesca
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The presence of nuclear pasta is expected to modify the transport properties in the mantle of neutron stars. The non-spherical geometry of the pasta nuclear clusters leads to anisotropies in the collision frequencies, impacting the thermal and electrical conductivity. We derive analytical expressions for the anisotropic collision frequencies using the Boltzmann equation in the relaxation time approximation. The average parallel, perpendicular and Hall electrical conductivities are computed in the high-temperature regime above crustal melting, considering incoherent elastic electron-pasta scattering and randomly oriented pasta structures. Numerical values are obtained at different densities and temperatures by using the IUFSU parametrization of the non-linear Walecka model to determine the crustal structure. We find that the anisotropy of the collision frequencies grows with the length of the pasta structures and, independently of the magnetic field, the presence of rod and slab phases decreases the conductivity by more than one order of magnitude. Our numerical results indicate that, even if the pasta structures might survive above the crustal melting point, no strong anisotropies are to be expected in the conduction properties in this temperature regime, even in the presence of a very high magnetic field.
description: 15 pages, 12 figures
The role of literature in Fernando Molano’s trilogy : how triple social rejection (poverty, homosexuality and HIV/AIDS) affects the marginalized gay writer
Creators: name: Contreras, Nayid Jesus
Publisher: name: University of British Columbia
Year: 2019

description: The literary work of Fernando Molano Vargas was the result of creativity and talent conceived under discriminatory circumstances surrounding poverty, homosexuality, and HIV/AIDS. This thesis asks what drives a person like Molano, who is triply marginalized, to dedicate himself to writing? I argue that Molano, an openly homosexual author, makes of literature his personal instrument of salvation: a matter of life and death. The present work is the first sustained analysis, at least in English, devoted to Molano’s trilogy, guided by theoretical approaches in queer theory such as those of Lee Edelman’s Homographesis (2016) and No Future (2004), and Kathryn Stockton’s The Queer Child (2009). This thesis is divided into three chapters. The first is on the novel Un beso de Dick (1992) and deals with themes of homosexual desire, love, life, and death. I evaluate Molano’s exploration of homosexuality in relation to the naive adolescent’s first love, sexuality, and the homoerotic desire within the masculine environments of sports, where gay men are usually forced to hide their sexuality to avoid homophobia. The second chapter is on the posthumously published novel Vista desde una acera (2012), where I consider themes of poverty, relationships, discrimination, and HIV/AIDS. Here, I interpret Molano’s personal experiences with poverty, gender roles, and traditional family values. I contend that Molano sees in literature an opportunity to process and reflect upon his childhood traumas. The third chapter is on Todas mis cosas en tus bolsillos (1997), Molano’s book of poetry. Here, I explore Molano’s development of love, sexual pleasure, BDSM, homoeroticism, and homosexual relationships and point out how Molano’s poetic voice changes, highlighting a defining characteristic of his poetry—defiance —where intimate life details are shared. The narrator is a voyeuristic, sexually active rebel and literary connoisseur, who aims to capture the attention of a curious reader.
Quantum Bianchi-VII problem, Mathieu functions and arithmetic
Creators: name: Veselov, A. P.
name: Ye, Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37D40, 37J35, 57M50

description: The geodesic problem on the compact threefolds with the Riemannian metric of Bianchi-VII$_0$ type is studied in both classical and quantum cases. We show that the problem is integrable and describe the eigenfunctions of the corresponding Laplace-Beltrami operators explicitly in terms of the Mathieu functions with parameter depending on the lattice values of some binary quadratic forms. We use the results from number theory to discuss the level spacing statistics in relation with the Berry-Tabor conjecture and compare the situation with Bianchi-VI$_0$ case (Sol-case in Thurston's classification) and with Bianchi-IX case, corresponding to the classical Euler top.
description: 15 pages, 4 figures
Characterization of teaghrelin-like compounds from tea cultivars
Creators: name: Ping-Chung Kuo
name: Yue-Chiun Li
name: Ruo-Hsuan Wu
name: Tzen, Jason T. C.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Developmental Biology

description: Teaghrelins, identified originally in Chin-shin oolong tea, are unique acylated flavonoid tetraglycosides and proposed to be potential oral analogues of ghrelin. In the present study, two new teaghrelin-like compounds were characterized from tea cultivars (TTES No. 12), and their chemical structures were established by the spectroscopic and spectrometric analysis. However, due to the different location of rhamnose, these two teaghrelin-like compounds may not show significant ghrelin receptor affinity.
Poincaré recurrences in Hamiltonian systems with a few degrees of freedom
Creators: name: Shepelyansky, D. L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Hundred twenty years after the fundamental work of Poincaré, the statistics of Poincaré recurrences in Hamiltonian systems with a few degrees of freedom is studied by numerical simulations. The obtained results show that in a regime, where the measure of stability islands is significant, the decay of recurrences is characterized by a power law at asymptotically large times. The exponent of this decay is found to be $β\approx 1.3$. This value is smaller compared to the average exponent $β\approx 1.5$ found previously for two-dimensional symplectic maps with divided phase space. On the basis of previous and present results a conjecture is put forward that, in a generic case with a finite measure of stability islands, the Poncaré exponent has a universal average value $β\approx 1.3$ being independent of number of degrees of freedom and chaos parameter. The detailed mechanisms of this slow algebraic decay are still to be determined.
description: revtex 4 pages, 4 figs; Refs. and discussion added
Letter From Emmett L. Bennett Jr. to Leslie Crooks, September 23, 1991
Creators: name: Bennett, Emmett L.
Publisher: name: The University of Texas at Austin
Year: 1991
Subjects: Thomas G. Palaima Collection
Thomas G. Palaima Collection--Correspondence
Thomas G. Palaima Collection--Correspondence--Leslie Crooks

description: Bennett forwards Palaima his request for a University of Texas calendar in this memo to Leslie Crooks.
Specialized metabolites contributing to colour and scent volatiles in Uvaria hamiltonii flowers
Creators: name: Barman, Monica
name: Upashana Ghissing
name: Dey, Pritam Kumar
name: Agarwal, Avinash
name: Bubai Bera
name: Jhansi Narmada Reddy Kotamreddy
name: Karmakar, Prakash
name: Adinpunya Mitra
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Plant Biology

description: The present study focuses on the emitted and endogenous scent profiles of Uvaria hamiltonii flowers. Among the 34 compounds identified, sesquiterpenoids were found to dominate the floral volatiles composition. Profiles from endogenous scent volatiles showed higher number of compounds than the emitted ones. The anthocyanin pigment responsible for the flower colour was also explored. It was found that a single anthocyanin compound, cyanidin-3-O-glucoside, was principally responsible for petal colour. Total phenolic content was evaluated and antioxidant capacities were studied with the help of DPPH, FRAP and ABTS assays. The total phenolic content and the antioxidant capacity were higher in methanolic extract as compared to aqueous, petroleum ether and ethyl acetate extracts of U. hamiltonii flowers.
title: Spektrum : the science magazine of the University of Bayreuth - Dezember 2021
Creators: name: Universität Bayreuth, Pressestelle
Publisher: name: University of Bayreuth
Year: 2021
Subjects: subject: spektrum
subject: Universität Bayreuth
subject: Uni Bayreuth
subject: Forschung
subject: Wissenschaft
subject: Neuigkeiten
subject: 000
subject: 050
subject: 070

description: In our magazine Spektrum, you can always find out what topics our researchers are working on and what innovations are being developed at the University of Bayreuth campus. Cover topic of this issue: "Sport".
Combatting Front-Running in Smart Contracts: Attack Mining, Benchmark Construction and Vulnerability Detector Evaluation
Creators: name: Zhang, Wuqi
name: Wei, Lili
name: Cheung, Shing-Chi
name: Liu, Yepang
name: Li, Shuqing
name: Liu, Lu
name: Lyu, Michael R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Front-running attacks have been a major concern on the blockchain. Attackers launch front-running attacks by inserting additional transactions before upcoming victim transactions to manipulate victim transaction executions and make profits. Recent studies have shown that front-running attacks are prevalent on the Ethereum blockchain and have caused millions of US dollars loss. Vulnerable smart contracts, blockchain programs invoked by transactions, are held responsible for front-running attacks. Although techniques to detect front-running vulnerabilities have been proposed, their performance on real-world vulnerable contracts is unclear. There is no large-scale benchmark based on real attacks to evaluate their capabilities. This motivates us to build a benchmark consisting of 513 real-world attacks with vulnerable code labeled in 235 distinct smart contracts. We propose automated techniques to effectively collect real-world attacks and localize the corresponding vulnerable code at scale. Our experiments show that our approaches are effective, achieving higher recall in finding real attacks and higher precision in pinpointing vulnerabilities compared to the existing techniques. The evaluation of seven state-of-the-art vulnerability detection techniques on the benchmark reveals their inadequacy in detecting front-running vulnerabilities, with a low recall of at most 6.04%. Our further analysis identifies four common limitations in existing techniques: lack of support for inter-contract analysis, inefficient constraint solving for cryptographic operations, improper vulnerability patterns, and lack of token support.
description: Accepted as Journal First paper on the Transactions on Software Engineering (TSE-2022-12-0547)
title: Ð¡Ð¸ÑÑÐµÐ¼Ð° Ð¾Ñ ÑÐ°Ð½Ñ Ð¿ÐµÑÐ¸Ð¼ÐµÑÑÐ° Ð¼ÐµÑÐµÐ¾ÑÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÐ°Ð½ÑÐ¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Meteorological station perimeter security system
Creators: name: ÐÐ¸ÑÐ»ÑÐ¹, ÐÐ¾Ð½ÑÑÐ°Ð½ÑÐ¸Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð¿ÑÐµÐ¼Ð¸Ð°Ð»ÑÐ½Ð°Ñ Ð¾Ñ ÑÐ°Ð½Ð½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð°
ÑÐ´Ð°Ð»ÐµÐ½Ð½ÑÐ¹ Ð½ÐµÐ¾Ð±ÑÐ»ÑÐ¶Ð¸Ð²Ð°ÐµÐ¼ÑÐ¹ Ð¾Ð±ÑÐµÐºÑ
Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼Ð¾Ð¹ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸
Ð²ÑÑÐ¸ÑÐ»ÐµÐ½Ð¸Ðµ Ð½Ð°Ð´ÐµÐ¶Ð½Ð¾ÑÑÐ¸ Ð¸ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸
premium security system
remote maintenance-free facility
security system management program
reliability and safety calculation

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ¾Ð´ÐµÑÐ¶Ð¸ÑÑÑ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ðµ Ð¿ÐµÑÐ¸Ð¼ÐµÑÑÐ°Ð»ÑÐ½Ð¾Ð¹ Ð¾ÑÑÐ°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ´Ð°Ð»ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð½ÐµÐ¾Ð±ÑÐ»ÑÐ¶Ð¸Ð²Ð°ÐµÐ¼Ð¾Ð³Ð¾ Ð¾Ð±ÑÐµÐºÑÐ°. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð¾ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ðµ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ Ð´Ð»Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÑÑÐ´ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ¾Ð² Ñ Ð½ÐµÐ¹. ÐÐ°Ð»ÐµÐµ Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¸ÑÑÑ ÐºÑÐ°ÑÐºÐ¸Ðµ ÑÐ²ÐµÐ´ÐµÐ½Ð¸Ñ Ð¾ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ.
description: This paper contains the creation of a perimeter security system of a remote unattended object. Developed software for modeling this system and conducted a series of experiments with it. The following is a summary of the work performed.
Radiation reaction cooling as a source of anisotropic momentum distributions with inverted populations
Creators: name: Bilbao, Pablo J.
name: Silva, Luis O.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Under the presence of strong electromagnetic fields and radiation reaction, plasmas develop anisotropic momentum distributions, characterized by a population inversion. This is a general property of collisionless plasmas when the radiation reaction force is taken into account. We study the case of a plasma in a strong magnetic field and demonstrate the development of ring momentum distributions. The timescales for ring formation are derived for this configuration. The analytical results for the ring properties and the timescales for ring formation are confirmed with particle-in-cell simulations. The resulting momentum distributions are kinetically unstable and are known to lead to coherent radiation emission in astrophysical plasmas and laboratory setups.
description: Accepted for publication in PRL. 8 pages, 4 figures
Focal Plane Array Concept for ALMA 2030
Creators: name: Henke, Doug
name: Groppi, Chris
Publisher: name: Zenodo
Year: 2021
Subjects: Focal Plane Array, Hybrid-Tee, Magic-Tee

description: Focal plane arrays (FPA), integrated into total power antennas, are noted as a desired technology for ALMA development during the 2030s. For full compatibility with ALMA, a dual-linear, sideband-separating (2SB) architecture is necessary. We report on a conceptual design that uses a “unit cell” approach for the front-end 2SB block using waveguide. Each pixel uses a turnstile OMT for linear polarization, hybrid-tees for isolated power division and higher mode termination, and hole couplers for LO injection. A 5-layer quasi-platelet layout is used such that the “unit cell” is replicated to facilitate arrayed designs. Mixers are separately housed within a simplified DSB mixer block (using standard split-block) that allows for separate mixer qualification. In collaboration with ASU, a waveguide hybrid-tee, scaled for ALMA Band 6, is currently under development to explore the machinability and performance of the component itself, and the notion of using platelet designs at Band 6 frequencies.
Tutorial: Circuit-based Electromagnetic Transient Simulation
Creators: name: Pandey, Amritanshu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The growing penetration of inverter-based resources and associated controls necessitates system-wide electromagnetic transient (EMT) analyses. EMT tools and methods today were not designed for the scale of these analyses. In light of the emerging need, there is a great deal of interest in developing new techniques for fast and accurate EMT simulations for large power grids; the foundations of which will be built on current tools and methods. However, we find that educational texts covering the fundamentals and inner workings of current EMT tools are limited. As such, there is a lack of introductory material for students and professionals interested in researching the field. To that end, in this tutorial, we introduce the principles of EMT analyses from the circuit-theoretic viewpoint, mimicking how time-domain analyses are performed in circuit simulation tools like SPICE and Cadence. We perform EMT simulations for two examples, one linear and one nonlinear, including induction motor (IM) from the first principles. By the document's end, we anticipate the readers will have a \textit{basic} understanding of how power grid EMT tools work.
Late-time cosmic acceleration: Dark gravity
Creators: name: Lobo, Francisco S. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A central theme in cosmology is the perplexing fact that the Universe is undergoing an accelerating expansion. The latter, one of the most important and challenging current problems in cosmology, represents a new imbalance in the governing gravitational field equations. Several candidates, responsible for this expansion, have been proposed in the literature, in particular, dark energy models and modified gravity, amongst others. In this paper, we explore the possibility that the late-time cosmic acceleration is due to infra-red modifications of Einstein's theory of General Relativity, and review some of the modified theories of gravity that address this intriguing and exciting problem facing modern physics.
description: 4 pages. Prepared for the proceedings of the Spanish Relativity meeting (ERE2010), Granada, Spain, 6-10 Sep 2010
Vernacular music and female musicians in late Chosŏn Korea, 1700–1897
Creators: name: Suh, Jiyoung
Publisher: name: University of British Columbia
Year: 2021

description: This dissertation investigates the Late Chosŏn Korean vernacular music genre known as chamber music and a new music community comprised of professional musicians from diverse social strata, including female musicians in chamber music practice. I raise a series of questions about music practice in social relations: the formulation of the court music domain in the Confucian platform; cultural assumptions surrounding musical activity and the place of musicians; the characteristics of chamber music among the cultivated and the vulgar; the agency of musicians in social distinctions, such as class, gender, and region, in the Late Chosŏn and the specific positionality of female musicians in diverse music venues.₃ The dissertation is divided into four major chapters. The first chapter covers the issue of ideal music within a Confucian framework, the taxonomy of court music, the contentions surrounding the enjoyment of music, and the movement of court musicians into private music venues in the Late Chosŏn period. The second chapter deals with the formation of chamber music, focusing on the specific location of chungin (second status) musicians who had multifaceted relationships with the patron group from the upper class and their interventions in the reshaping of chamber music as cultivated. The third chapter deals with female musicians called kinyŏ (known as female entertainers; courtesans), not least interrogating the complex character of the female musicians who performed both for official ceremonies and in private chamber music venues. The fourth chapter delves into the voices and narratives of kinyŏ that included their strategies as part of the struggle for social recognition. I further examine the environments of kinyŏ who engaged in commodifying the musical and cultural assets in kibang (known as pleasure quarters) and pursue the intricate connection between female musicians and the urban entertainment business in the Late Chosŏn period. My analysis of chamber music and professional musicians articulates the dynamic cultural forces that reformulated the dominant aesthetic based upon Confucian morality. The heterogeneous social realities captured in the music scene will enable us to reconsider Late Chosŏn society, which has been explained with the blanket term “Confucianization” applied to all social levels.
Characterization of teaghrelin-like compounds from tea cultivars
Creators: name: Ping-Chung Kuo
name: Yue-Chiun Li
name: Ruo-Hsuan Wu
name: Tzen, Jason T. C.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Developmental Biology

description: Teaghrelins, identified originally in Chin-shin oolong tea, are unique acylated flavonoid tetraglycosides and proposed to be potential oral analogues of ghrelin. In the present study, two new teaghrelin-like compounds were characterized from tea cultivars (TTES No. 12), and their chemical structures were established by the spectroscopic and spectrometric analysis. However, due to the different location of rhamnose, these two teaghrelin-like compounds may not show significant ghrelin receptor affinity.
Multi-scale architecture for fast optical addressing and control of large scale qubit arrays
Creators: name: Graham, T. M.
name: Oh, E.
name: Saffman, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a technique for rapid site-selective control of the quantum state of particles in a large array using a combination of a fast deflector (e.g. an acousto-optic deflector) and a relatively slow spatial light modulator. The use of spatial light modulators for site-selective quantum state manipulation has been limited due to slow transition times preventing rapid, consecutive quantum gates. By partitioning the spatial light modulator into multiple segments, and using a fast deflector to transition between them, it is possible to substantially reduce the average time increment between scanner transitions by increasing the number of gates that can be performed for a single spatial light modulator full frame setting. We analyze the performance of this device in two different configurations: in configuration 1, each segment of the spatial light modulator addresses the full qubit array; in configuration 2, each segment of the spatial light modulator addresses a sub-array and an additional fast deflector positions that sub-array with respect to the full qubit array. With these hybrid scanners we calculate qubit addressing rates that are tens to hundreds of times faster than using an SLM alone.
description: 8 figures, minor revisions
Origin of chemical and dynamical properties of the Galactic thick disk
Creators: name: Bekki, Kenji
name: Tsujimoto, Takuji
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We adopt a scenario in which the Galactic thick disk was formed by minor merging between the first generation of the Galactic thin disk (FGTD) and a dwarf galaxy about 9 Gyr ago and thereby investigate chemical and dynamical properties of the Galactic thick disk. In this scenario, the dynamical properties of the thick disk have long been influenced both by the mass growth of the second generation of the Galactic thin disk (i.e., the present thin disk) and by its non-axisymmetric structures. On the other hand, the early star formation history and chemical evolution of the thin disk was influenced by the remaining gas of the thick disk. Based on N-body simulations and chemical evolution models, we investigate the radial metallicity gradient, structural and kinematical properties, and detailed chemical abundance patterns of the thick disk. Our numerical simulations show that the ancient minor merger event can significantly flatten the original radial metallicity gradient of the FGTD, in particular, in the outer part, and also can be responsible for migration of inner metal-rich stars into the outer part (R>10kpc). The simulations show that the central region of the thick disk can develop a bar due to dynamical effects of a separate bar in the thin disk. The simulated orbital eccentricity distributions in the thick disk for models with higher mass-ratios (~0.2) and lower orbital eccentricities (~ 0.5) of minor mergers are in good agreement with the corresponding observations. The simulated V_{phi}-|z| relation of the thick disk in models with low orbital inclination angles of mergers are also in good agreement with the latest observational results. Our Galactic chemical evolution models can explain both the observed metallicity distribution functions (MDFs) and correlations between [Mg/Fe] and [Fe/H] for the two disks in a self-consistent manner.
description: 19 pages, 22 figures, accepted in ApJ
Spin-lattice interaction parameters from first principles: theory and implementation
Creators: name: Mankovsky, Sergiy
name: Lange, Hannah
name: Polesya, Svitlana
name: Ebert, Hubert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A scheme is presented to calculate on a first-principles level the spin-lattice coupling (SLC) parameters needed to perform combined molecular-spin dynamics (MSD) simulations. By treating changes to the spin configuration and atomic positions on the same level, closed expressions for the atomic SLC parameters could be derived in a coherent way up to any order. The properties of the SLC parameters are discussed considering separately the symmetric and antisymmetric parts of the SLC tensor. The changes due to atomic displacements of the spin-spin exchange coupling (SSC) parameters estimated using the SLC parameters are compared with the SSC parameters calculated for an embedded cluster with the central atom displaced, demonstrating good agreement of these results. Moreover, this allows to study the impact of different SLC contributions, linear and quadratic with respect to displacements, on the properties of the modified SSC parameters. In addition, we represent an approach to calculate the site-diagonal SLC parameters characterizing local magnetic anisotropy induced by a lattice distortion, which is a counterpart of the approach based on magnetic torque used for the investigations of magneto-crystalline anisotropy (MCA) as well as for calculations of the MCA constants. In particular, the dependence of the induced magnetic torque on different types of atomic displacements is analyzed.
description: 16 pages
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ¸ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð¾Ñ ÑÐ°Ð½Ðµ ÑÑÑÐ´Ð° Ð² Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð¾-Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸ÑÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development a training methodology of labor protection in vertically integrated companies
Creators: name: ÐÐ¸Ð½ÐµÐµÐ²Ð°, ÐÐ»ÐµÐºÑÐ°Ð½Ð´ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ° Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð¾Ñ ÑÐ°Ð½Ðµ ÑÑÑÐ´Ð°
Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð¾-Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð°Ñ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ñ
Ð¾Ð±ÑÑÐµÐ½Ð¸Ðµ Ð¾Ñ ÑÐ°Ð½Ðµ ÑÑÑÐ´Ð°
Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð°Ñ Ð¸Ð½ÑÐµÐ³ÑÐ°ÑÐ¸Ñ
method of education
labor protection
vertical-integrated company
education
vertical integration

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð² Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð²ÑÑÑÑÐ¿Ð°ÐµÑ Ð¾Ð±Ð»Ð°ÑÑÑ Ð¾ÑÑÐ°Ð½Ñ ÑÑÑÐ´Ð° Ð² Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð¾-Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸ÑÑ. Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ - ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ¸ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð´Ð»Ñ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð² Ð¸ ÑÑÐºÐ¾Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÐµÐ¹ Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð¾-Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸. Ð ÑÐ¾Ð´Ðµ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° Ð¸Ð·ÑÑÐµÐ½Ð° ÑÑÑÑÐºÑÑÑÐ° Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð¾-Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸, ÐµÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÑ Ð¸ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ. ÐÑÐ»Ð¸ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ðµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð¾ÑÑÐ°Ð½Ðµ ÑÑÑÐ´Ð° Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð² Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð¾-Ð¸Ð½ÑÐµÐ³ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸ÑÑ. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ Ð¼ÐµÑÐ¾Ð´Ñ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð¸ ÑÑÐµÐ´ÑÑÐ²Ð° Ð¾ÑÐµÐ½ÐºÐ¸ Ð·Ð½Ð°Ð½Ð¸Ð¹ Ð¸ Ð²ÑÐ±ÑÐ°Ð½Ñ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÐµ Ð¸Ð· Ð½Ð¸Ñ.
description: The object of research in this work is the area of labor protection in vertically integrated companies. The aim of the work is to develop a training methodology for specialists and managers of a vertically integrated company. In the course of this work, the structure of a vertically integrated company, its elements and management features was studied. The existing features of OSH training were analyzed and the most effective methods of training in vertically integrated companies were identified. As a result of the work, the teaching methods and means for assessing knowledge were analyzed and the most effective ones were selected.
A redshift distortion free correlation function at third order in the nonlinear regime
Creators: name: Meng, Kelai
name: Pan, Jun
name: Szapudi, Istvan
name: Feng, Longlong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The zeroth-order component of the cosine expansion of the projected three-point correlation function is proposed for clustering analysis of cosmic large scale structure. These functions are third order statistics but can be measured similarly to the projected two-point correlations. Numerical experiments with N-body simulations indicate that the advocated statistics are redshift distortion free within 10% in the non-linear regime on scales ~0.2-10Mpc/h. Halo model prediction of the zeroth-order component of the projected three-point correlation function agrees with simulations within ~10%. This lays the ground work for using these functions to perform joint analyses with the projected two-point correlation functions, exploring galaxy clustering properties in the framework of the halo model and relevant extensions.
description: 10 pages, 6 figs; MNRAS accepted
CFT Duals for Black Rings and Black Strings
Creators: name: Chanson, Alexandra
name: Martin, Victoria
name: Rodriguez, Maria J.
name: Temoche, Luis Fernando
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Holographic dualities between certain gravitational theories in four and five spacetime dimensions and 2D conformal field theories (CFTs) have been proposed based on hidden conformal symmetry exhibited by the radial Klein-Gordon (KG) operator in a so-called near-region limit. In this paper, we examine hidden conformal symmetry of black rings and black strings solutions, thus demonstrating that the presence of hidden conformal symmetry is not linked to the separability of the KG-equation (or the existence of a Killing-Yano tensor). Further, we will argue that these classes of non-extremal black holes have a dual 2D CFT. New revised monodromy techniques are developed to encompass all the cases we consider.
description: 28 pages
THE EFFECT OF STUDENTS’ SELF-REGULETED LEARNING ON READING COMPREHENSION IN EFL CLASSROOM: SELAMBER PREPARATORY AND SECONDARY SCHOOL: GRADE 9 STUDENTS IN FOCUS
Creators: name: ERMIAS AYDE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The objective of this study was aimed at investigating the effect of self- regulated leaning
strategies of students’ reading comprehension in Selamber Secondary school grade 9 students.
To achieve this general goal, experimental study design was employed involving, experimental
and control groups including 40, participants in each group. To gather the data intended, pre
and post tests and a questionnaire were used as major data collection tools. On the basis of the
analysis and interpretation of the data gathered, the finding showed that the significant number
of participants in experimental group have brought positive change in their test results due to
special treatment given to make them use self- regulated learning strategies. On the other hand,
the control group participants, except for the first pre- test sessions, didn’t show positive change
in their reading performances. Participants of the control group also found to be aware of their
self- regulated learning strategies and seemed to be using them, but they were not found in doing
so as it was revealed in their post test result. Hence, it was concluded that special treatment
designed and given to participants of the experimental group has a significant difference on
reading comprehension control group which have shown no significant change on their test
because they were denied the opportunity and those control group participants found to be
seemed aware of the self- regulated strategies, but practically they were no. so, it was
recommended that it is necessary to create awareness in students with regard t o self- regulated
learning strategies for overall benefit of the students; and concerned bodies at schools and
elsewhere should collaborate to facilitate schools suitable for raising self- regulated learning
strategies there to enhance the advantage of all stockholders
Open Ukrainian Citation Index: источники данных и принцип работы
Creators: name: Назаровец, Сергей Андреевич
Publisher: name: Zenodo
Year: 2020
Subjects: Open Ukrainian Citation Index
OUCI
Crossref
индексы цитирования
научное цитирование
информационные технологии

description: В докладе освещаются вопросы создания и функционирования системы и базы данных научных цитирований Open Ukrainian Citation Index (OUCI), а также перспективы развития этого проекта.
EXPLORING THE IMPLEMENTATION OF LEARNING SPEAKING SKILL  IN LARGE CLASSROOM: THE CASE OF AMEYA SECONDARY AND PREPARATORY SCHOOL, KONTA SPECIAL WOREDA
Creators: name: DEMSISACHEW BEFEKADU
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The main purpose of this study was exploring the implementation  of learning speaking skill in
large class in selected secondary  and preparatory school in Ameya. Descriptive survey method
was employed to accomplish the study. Grade 10 students and their English  language  teachers
were the data sources for this study. To conduct the research, quantitative and qualitative
research methods was employed. The data were collected from 114(100%) students and 2(100%)
teachers of English language; and observation of two classrooms. Three instruments-questionnaire, observation and interview were used as data collection tools. The quantitative data
were analyzed using percentage, and measured using ranks; and, the qualitative data were
elaborated  and narrated in words.  The findings of this study reveal that large class size is found
to be a hindrance to students‘ learning speaking skill. Impacts of large class size like  lack of
adequate opportunity for every student to involve actively, time consuming, dominance of few
active  students, teachers inability in classroom management, difficulty to address needs of each
student, incapability to give feedback and conduct continuous assessment are  also  mentioned.
The result of the study also revealed, although teachers and schools are trying to minimize the
impact of large class size, their commitment was not significantly as required. Finally, based on
the major findings, possible recommendation were forwarded so as  to minimize the impact of
class size and maximize the implementation of learning and teaching speaking skill.
COMPARATIVE STUDY ON INDEX AND ENGINEERING PROPERTIES OF RED CLAY SOILS FOUND IN DIFFERENT PARTS PROPERTIES OF RED CLAY SOILS FOUND IN DIFFERENT PARTSPROPERTIES OF RED CLAY SOILS FOUND IN DIFFERENT PARTS OF SOUTHERN NATIONS, NATIONALITIES AND PEOPLES` REGION
Creators: name: YONAS BERHANE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: No abstract available for this resource