cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Use of a Large Language Model for Cyberbullying Detection
Creators: name: Ogunleye, Bayode
name: Dharmaraj, Babitha
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: H.3.3

description: The dominance of social media has added to the channels of bullying for perpetrators. Unfortunately, cyberbullying (CB) is the most prevalent phenomenon in todays cyber world, and is a severe threat to the mental and physical health of citizens. This opens the need to develop a robust system to prevent bullying content from online forums, blogs, and social media platforms to manage the impact in our society. Several machine learning (ML) algorithms have been proposed for this purpose. However, their performances are not consistent due to high class imbalance and generalisation issues. In recent years, large language models (LLMs) like BERT and RoBERTa have achieved state-of-the-art (SOTA) results in several natural language processing (NLP) tasks. Unfortunately, the LLMs have not been applied extensively for CB detection. In our paper, we explored the use of these models for cyberbullying (CB) detection. We have prepared a new dataset (D2) from existing studies (Formspring and Twitter). Our experimental results for dataset D1 and D2 showed that RoBERTa outperformed other models.
description: 14 pages, Journal of Analytics
Null controllability of Grushin-type operators in dimension two
Creators: name: Beauchard, K.
name: Cannarsa, P.
name: Guglielmi, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study the null controllability of the parabolic equation associated with the Grushin-type operator $A=\partial_x^2+|x|^{2γ}\partial_y^2\,, (γ>0),$ in the rectangle $Ω=(-1,1)\times(0,1)$, under an additive control supported in the strip $ω=(a,b)\times(0,1)\,, (01$. In the transition regime $γ=1$, we show that both behaviors live together: a positive minimal time is required for null controllability. Our approach is based on the fact that, thanks to the particular geometric configuration, null controllability is equivalent to the observability of the Fourier components of the solution of the adjoint system uniformly with respect to the frequency.
description: 27 pages
Health and Weight Beliefs and Behaviours of Pre-Service Teachers: Considerations and Implications for a Health Promotion Perspective in Teacher Education
Creators: name: Tkachuk, Michelle
name: Russell-Mayhew, Shelly
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: This project explored primary and secondary pre-service teachers’ (i.e., bachelor of education [B.Ed.] students) beliefs about health behaviours as well as health and weight during their university education at a large research-intensive university in Alberta. Although many studies claim that there is a need for teacher education in the areas of health and weight, recommendations for what such curricula might include are lacking. The present study was conducted with 226 pre-service teachers. Data included participants’ self-reported height, weight, body satisfaction, health promoting behaviours, implicit weight bias, and current weight loss and muscle gain attempts. Results suggest many pre-service teachers have concerns about their weight and shape, and exhibit weight bias. Teacher education focusing on body satisfaction, weight bias, exercise behaviour, and stress management may be beneficial for pre-service teachers to better prepare them to instruct about as well as model health attitudes and behaviors to their future students. Ce projet a exploré les croyances de stagiaires au primaire et au secondaire (c.-à-d. des étudiants au Baccalauréat en Éducation) sur les comportements liés à la santé, la santé et le poids pendant leur parcours dans une grande université albertaine centrée sur la recherche. Si plusieurs études affirment que les enseignants doivent être formés dans le domaine de la santé et du poids, les recommandations quant à ce que pourrait inclure une telle formation sont inexistantes. L’étude, réalisée auprès de 226 stagiaires, a demandé aux participants de fournir des données relatives aux éléments suivants : taille, poids, satisfaction à l’égard de leur corps, comportements favorables à la santé, partialité implicite envers les gens présentant un excès de poids, perte de poids actuelle et tentatives d’augmenter la masse musculaire. Les résultats indiquent que plusieurs stagiaires sont préoccupés par leur poids et la forme de leur corps, et qu’ils montrent un préjugé face aux personnes avec de l’embonpoint. Une formation qui porterait sur la satisfaction à l’égard de son corps, la partialité envers les gens présentant un excès de poids, les comportements liés à l’exercice physique et la gestion du stress pourrait s’avérer bénéfique pour les stagiaires, qui seraient ainsi mieux préparer pour enseigner à leurs élèves des attitudes et des comportements liés à la santé, et pour en être de bons modèles.
description: Alberta Journal of Educational Research, Vol. 63 No. 3 (2017): Fall 2017
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ°Ð·Ð½Ð¾Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾Ð³Ð¾ Ð¾ÑÑÐ¾ÑÑÐ¾Ð¿Ð½Ð¾Ð³Ð¾ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð´Ð»Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ ÑÐ»Ð¾Ð¸ÑÑÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð¿ÑÐ¸ ÑÐ´Ð°ÑÐ½Ð¾Ð¼ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Development of a mathematical model for a bi-modulus orthotropic material for modeling the behavior of layered composite structures
Creators: name: ÐÐ¾Ð±Ð°ÑÐµÐ², ÐÐ¼Ð¸ÑÑÐ¸Ð¹
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Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÐÐ¾Ð½ÐµÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð¼ÐµÑÐ¾Ð´
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description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ ÑÐ°Ð·Ð½Ð¾Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾Ð³Ð¾ Ð¾ÑÑÐ¾ÑÑÐ¾Ð¿Ð½Ð¾Ð³Ð¾ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð´Ð»Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð²ÐµÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ ÑÐ°Ð±Ð¾ÑÑ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð·Ð°Ð´Ð°Ñ, Ð¸Ð¼ÐµÑÑÐ¸Ñ Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¾Ðµ ÑÐµÑÐµÐ½Ð¸Ðµ. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¾ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ ÑÐ°Ð·Ð½Ð¾Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð½Ð° ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐ°ÑÑÐµÑÐ° Ð¸Ð·Ð³Ð¸Ð±Ð° ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð¿Ð°Ð½ÐµÐ»Ð¸. ÐÑÐ¾Ð´ÐµÐ¼Ð¾Ð½ÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð° Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð´Ð»Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð¿ÑÐ¸ ÑÐ´Ð°ÑÐ½ÑÑ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸ÑÑ.
description: In this paper, a mathematical model of a bi-modulus orthotropic material has been developed to model the behavior of composite structures. Verification of the developed material model was carried out with the example of problems having an analytical solution. The influence of bi-modulus material on the results of calculating the bending of the composite panel was studied. The possibility of using the developed material model for modeling the behavior of composite structures under shock impacts was demonstrated.
Pre-service and Practicing Teachers’ Commitment to and Comfort with Social Emotional Learning
Creators: name: Goegan, Lauren Denise
name: Wagner, Amanda K.
name: Daniels, Lia M.
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: Although teachers’ beliefs about social-emotional learning have become a topic of interest, understanding how they relate to teachers’ own social-emotional competence is unknown. We used a predictive correlation design to examine how Canadian pre-service (n=138) and in-service (n=276) teachers’ beliefs about social-emotional competence relate to their comfort with and commitment to social-emotional learning, and how both sets of beliefs are related to their perceived efficacy for classroom management and engagement with students. Regression analyses revealed that comfort with social-emotional learning significantly predicted both outcomes for both groups whereas commitment to social-emotional learning did not. Perceived social-emotional competence also played an important role. Pre-service teachers felt more committed to social-emotional learning, whereas in-service teachers felt more comfortable and believed they had higher levels of social-emotional competence themselves. Implications for supporting the development of teachers’ own social-emotional competence and suggestions for future research are provided. Si les croyances des enseignants relatives à l’apprentissage socio-affectif suscitent beaucoup d’intérêt, on ignore le lien entre celles-ci et la compétence socio-affective des enseignants eux-mêmes. Nous appuyant sur une conception de corrélations prédictives, nous avons examiné le lien entre les croyances des stagiaires (n=138) et des enseignants en exercice (n=276) relatives à la compétence socio-affective d’une part, et l’aise et l’engagement dont ils font preuve face à l’apprentissage socio-affectif, d’autre part. De plus, nous nous sommes penchés sur la mesure dans laquelle les croyances des participants sont liées à leur perception de l’efficacité de leur gestion de classe et de leur engagement avec les élèves. Des analyses de régression ont révélé qu’un sentiment d’aisance avec l’apprentissage socio-affectif prédit de manière significative les deux résultats pour les deux groupes alors que ce n’était pas le cas pour un engagement face à l’apprentissage socio-affectif. La perception de la compétence socio-affective a également joué un rôle important. Les stagiaires avaient un sentiment d’engagement plus fort envers l’apprentissage socio-affectif, tandis que les enseignants en exercice se sentaient plus à l’aise et croyaient que leur niveau de compétence socio-affective était plus élevé. Nous présentons quelques implications d’appuyer le développement de la compétence socio-affective des enseignants et des suggestions pour la recherche à l’avenir.
description: Alberta Journal of Educational Research, Vol. 63 No. 3 (2017): Fall 2017
Towards the identification of causal genes and contributing molecular processes underlying strabismus
Creators: name: Ye, Xin
Publisher: name: University of British Columbia
Year: 2020

description: Eye misalignment, or strabismus, has a frequency of up to 4% in a population, and is known to have both environmental and genetic causes. Genes associated with syndromic forms of strabismus (i.e. strabismus concurrent with multiple phenotypes) have emerged, but genes contributing to isolated strabismus remain to be discovered. Only one isolated strabismus locus, STBMS1 on chromosome 7, has been confirmed in more than one family, but the inheritance model of the locus is inconsistent between studied families and no specific causal variant has been reported. The large set of syndromes with strabismus suggests that within the visual system multiple perturbations of an underlying genetic network(s) can have the common output of disrupted eye alignment. Thus, I used a bioinformatic-driven approach to analyze curated genes associated with strabismus to provide insight into the biological mechanisms underlying strabismus, highlighting a link to the Ras-MAPK pathway. During the process, I noticed strabismus presenting within a large number of intellectual disability disorders. Therefore, I studied the co-occurrence of strabismus and other common phenotypes in a series of patients with intellectual disability, which confirmed a significant correlation between eye alignment and intellectual disability. Finally, I resumed efforts from my prior studies to identify the genetic cause in a seven-generation family with isolated strabismus inherited in an autosomal dominant manner. The likely casual gene disruption, altering a likely cis-regulatory region of the FOXG1gene, was identified through the incorporation of linkage analysis, next generation sequencing, and in-depth bioinformatic analyses. This thesis identifies potential roles for genes participating in the Ras-MAPK pathway, emphasizes the role of the central nervous system, and reveals FOXG1 as a causal gene candidate for isolated strabismus.
Gravitational Couplings of Higher Spins from String Theory
Creators: name: Polyakov, Dimitri
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the interaction 3-vertex of two massless spin 3 particles with a graviton using vertex operators for spin 3 fields in open string theory, constructed in our previous work. The massless spin 3 fields are shown to interact with the graviton through the linearized Weyl tensor, reproducing the result by Boulanger, Leclercq and Sundell. This is consistent with the general structure of the non-Abelian $2-s-s$ couplings, implying that the minimal number of space-time derivatives in the interaction vertices of two spin s and one spin 2 particle is equal to $2s-2$.
description: 19 pages
Sympycnus vadimi Negrobov 1973
Creators: name: Negrobov, Oleg P.
name: Grichanov, Igor Ya.
name: Selivanova, Olga V.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Dolichopodidae
Sympycnus
Sympycnus vadimi

description: Sympycnus vadimi Negrobov
 Sympycnus vadimi Negrobov, 1973: 151.
 Type material examined. HOLOTYPE ♂, labelled: Mongolia: “ Archangaj aimak, 25 km WSW von Ichtamir ”, 30.VIII.1967, Zaitsev (ZIN).
 Distribution. Palaearctic: Mongolia.
description: Published as part of Negrobov, Oleg P., Grichanov, Igor Ya. & Selivanova, Olga V., 2017, Review of East Palaearctic species of Sympycnus Loew, 1857, with a key to species, pp. 531-548 in Zootaxa 4277 (4) on page 544, DOI: 10.11646/zootaxa.4277.4.4, http://zenodo.org/record/814621
Counting integers with restrictions on their prime factors
Creators: name: Downey, Jenna
Publisher: name: University of British Columbia
Year: 2019

description: In this thesis, we examine two problems that, on the surface, seem like pure group theory problems, but turn out to both be problems concerning counting integers with restrictions on their prime factors. Fixing an odd prime number q and a finite abelian q-group H=ℤqᵅ₁×ℤqᵅ₂×⋯×ℤqᵅʲ, our first aim is to find a counting function, D(H,x), for the number of integers n up to x such that H is the Sylow q-subgroup of (ℤ/nℤ)×. In Chapter 2, we prove that D(H,x)∼ K_H x(log log x)ʲ/(log x)⁻¹/⁽q⁻¹⁾, where K_H is a constant depending on H. The second problem that we examine in this thesis concerns counting the number of n up to x for which (ℤ/nℤ)× is cyclic and for which (ℤ/nℤ)× is maximally non-cyclic, where (ℤ/nℤ)× is said to be maximally non-cyclic if each of its invariant factors is squarefree. In Chapter 3, we prove that the number of n up to x such that (ℤ/nℤ)× is cyclic is asymptotic to (3/2)x/log x and that the number of n up to x such that (ℤ/nℤ)× is maximally non-cyclic is asymptotic to C_f x/(log x)¹⁻ξ, where ξ is Artin's constant and C_f is the convergent product, C_f=(15/14Γ(ξ)) limₓ→∞ (∏_p≤ₓ\\{p-₁ square-free} (1+(1/p)+(1/p²)) ∏_p≤ₓ (1-(1/p))^ξ). It turns out that both of these problems can be reduced to problems of counting integers with restrictions on their prime factors. This allows the problems to be addressed by classical techniques of analytic number theory.
Insight from Nunavut Educators Using Appreciative Inquiry
Creators: name: Preston, Jane P.
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: The purpose of this paper is to document some successful features of public schools within Nunavut, according to the personal experiences of a group of 14 principals, vice-principals, and teachers. At the start of this paper, I explained my research positionality, depicting my personal history and background related to this study. From a total of 24 individual interviews, three themes surfaced: culturally vibrant programs, the array of professional development offered to educators, and student self-pride and involvement in school activities. To conceptualize the findings, I applied the 4-D cycle of appreciative inquiry (i.e., Discovery, Dream, Design, and Destiny) and explained how effective change can emerge within a school system. Appreciative inquiry is a change process of identifying what is working well, deciphering why it is working well, and emulating more of those positive attributes. L’objectif de cet article est de documenter quelques-unes des caractéristiques des écoles publiques au Nunavut qui - selon les expériences personnelles d’un groupe de 14 personnes composé de directeurs, directeurs adjoints et d’enseignants - sont les mieux réussies. Je commence par expliquer mon positionnement comme chercheuse, évoquant ainsi mon histoire et mes antécédents personnels par rapport à cette étude. Trois thèmes ressortent des 24 entrevues individuelles : des programmes dynamiques sur le plan culturel, des possibilités en matière de développement professionnel pour les enseignants, et l’orgueil des élèves et leur et la participation aux activités scolaires. Pour présenter les résultats, j’ai appliqué la démarche des 4D de l’enquête appréciative (c.-à-d. découverte, devenir, décision, déployer) et j’ai expliqué comment le changement peut véritablement avoir lieu au sein d’un système scolaire. L’enquête appréciative est un processus de changement qui consiste à identifier les éléments qui fonctionnent bien, comprendre les raisons de leur efficacité et imiter davantage de ces aspects positifs.
description: Alberta Journal of Educational Research, Vol. 63 No. 3 (2017): Fall 2017
Interfering Composite Asymmetric Dark Matter for DAMA and CoGeNT
Creators: name: Del Nobile, Eugenio
name: Kouvaris, Chris
name: Sannino, Francesco
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We provide a simple mechanism for reconciling the direct dark matter experimental results. We consider light asymmetric composite dark matter which scatters off nuclei via Higgs and photon exchange. We demonstrate that the interference between these two channels naturally accommodates the experimental results. We discover that this happens for a compositeness scale of the order of the electroweak. We also provide a model realization based on strong dynamics at the electroweak scale.
description: 4 pages, 2 figures, 2 columns
Acceleration and energy consumption optimization in cascading classifiers for face detection on low-cost ARM big.LITTLE asymmetric architectures
Creators: name: Corpas, Alberto
name: Costero, Luis
name: Botella, Guillermo
name: Igual, Francisco D.
name: García, Carlos
name: Rodríguez, Manuel
Publisher: name: arXiv
Year: 2024
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: This paper proposes a mechanism to accelerate and optimize the energy consumption of a face detection software based on Haar-like cascading classifiers, taking advantage of the features of low-cost Asymmetric Multicore Processors (AMPs) with limited power budget. A modelling and task scheduling/allocation is proposed in order to efficiently make use of the existing features on big.LITTLE ARM processors, including: (I) source-code adaptation for parallel computing, which enables code acceleration by applying the OmpSs programming model, a task-based programming model that handles data-dependencies between tasks in a transparent fashion; (II) different OmpSs task allocation policies which take into account the processor asymmetry and can dynamically set processing resources in a more efficient way based on their particular features. The proposed mechanism can be efficiently applied to take advantage of the processing elements existing on low-cost and low-energy multi-core embedded devices executing object detection algorithms based on cascading classifiers. Although these classifiers yield the best results for detection algorithms in the field of computer vision, their high computational requirements prevent them from being used on these devices under real-time requirements. Finally, we compare the energy efficiency of a heterogeneous architecture based on asymmetric multicore processors with a suitable task scheduling, with that of a homogeneous symmetric architecture.
Testing the No-Hair Theorem with Observations in the Electromagnetic Spectrum: II. Black-Hole Images
Creators: name: Johannsen, Tim
name: Psaltis, Dimitrios
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: According to the no-hair theorem, all astrophysical black holes are fully described by their masses and spins. This theorem can be tested observationally by measuring (at least) three different multipole moments of the spacetimes of black holes. In this paper, we analyze images of black holes within a framework that allows us to calculate observables in the electromagnetic spectrum as a function of the mass, spin, and, independently, the quadrupole moment of a black hole. We show that a deviation of the quadrupole moment from the expected Kerr value leads to images of black holes that are either prolate or oblate depending on the sign and magnitude of the deviation. In addition, there is a ring-like structure around the black-hole shadow with a diameter of about 10 black-hole masses that is substantially brighter than the image of the underlying accretion flow and that is independent of the astrophysical details of accretion flow models. We show that the shape of this ring depends directly on the mass, spin, and quadrupole moment of the black hole and can be used for an independent measurement of all three parameters. In particular, we demonstrate that this ring is highly circular for a Kerr black hole with a spin a<0.9M, independent of the observer's inclination, but becomes elliptical and asymmetric if the no-hair theorem is violated. Near-future very-long baseline interferometric observations of Sgr A* will image this ring and may allow for an observational test of the no-hair theorem.
description: Accepted for publication in ApJ
title: ÐÐ¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¦ÐÐ ÐºÐ¾Ð½Ð´ÐµÐ½ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð¿Ð°ÑÐ¾Ð²Ð¾Ð¹ ÑÑÑÐ±Ð¸Ð½Ñ Ð-200-130
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: ÐÐ°ÑÐ¼Ð¾Ð², Ð¡ÐµÑÐ³ÐµÐ¹
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: 2019
Subjects: Ð¢ÐµÐ¿Ð»Ð¾Ð²ÑÐµ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÑÐ°Ð½ÑÐ¸Ð¸
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description: ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ ÑÐµÑÐ¸Ð¹Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ° Ð¿Ð°ÑÐ¾Ð²Ð¾Ð¹ ÑÑÑÐ±Ð¸Ð½Ñ Ð-200-130 Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ Ð·Ð°Ð¼ÐµÐ½Ñ Ð¿ÑÐ¾ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐ¸ ÑÐ¾ ÑÑÑÐ¿ÐµÐ½ÑÑ ÐÐ°ÑÐ¼Ð°Ð½Ð°. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ¿Ð»Ð¾Ð²ÑÐµ ÑÐ°ÑÑÐµÑÑ Ð¿ÑÐ¾ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐ¸ ÑÐ¾ ÑÑÑÐ¿ÐµÐ½ÑÑ ÐÐ°ÑÐ¼Ð°Ð½Ð° Ð¸ ÑÐ°ÑÑÐµÑÑ Ð¿ÑÐ¾ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐ¸ Ñ Ð»Ð¾Ð¿Ð°ÑÐºÐ¾Ð¹ Ð¿Ð¾ÑÐ»ÐµÐ´Ð½ÐµÐ¹ ÑÑÑÐ¿ÐµÐ½Ð¸ Ð´Ð»Ð¸Ð½Ð¾Ð¹ 1000 Ð¼Ð¼. Ð¢Ð°Ðº Ð¶Ðµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð»Ð¾Ð¿Ð°ÑÐºÐ¸ Ð¸ ÑÐ°ÑÑÐµÑÐ° ÐµÐµ Ð½Ð° ÑÑÐ°ÑÐ¸ÑÐµÑÐºÑÑ Ð¸ Ð²Ð¸Ð±ÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÑ; Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ ÑÐµÐ·ÑÐ»ÑÑÐ°Ñ ÑÐ°ÑÑÐµÑÐ° ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ°ÑÑÐ¾Ñ Ð²ÑÐ°ÑÐµÐ½Ð¸Ñ ÑÐ¾ÑÐ¾ÑÐ°. Ð¡Ð´ÐµÐ»Ð°Ð½ Ð¾Ð±Ð·Ð¾Ñ Ð¿ÑÐ¾ÑÐ¸Ð²Ð¾ÑÑÐ¾Ð·Ð¸Ð¾Ð½Ð½ÑÑ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ð¹ Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÑÐµÑÐ½Ð¸ÐºÐ¾-ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¼Ð¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ð¸.
description: Completed the description of the serial project of the steam turbine K-200-130 and the analysis of the possibility of replacing the flow part with the Bauman stage. Conducted thermal simulations of the flow part with Bauman stage and calculations of the flow part with the last stage blade length of 1000 mm. Completed the engineering of the blade and calculated its static and vibration strength; completed calculation of critical frequencies of rotation of the rotor. Made a review of anti-erosion measures and the technical and economic analysis of modernisation.
Stability of condensate in superconductors
Creators: name: Lipavský, Pavel
name: Šopík, Břetislav
name: Männel, Michael
name: Morawetz, Klaus
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: According to the BCS theory the superconducting condensate develops in a single quantum mode and no Cooper pairs out of the condensate are assumed. Here we discuss a mechanism by which the successful mode inhibits condensation in neighboring modes and suppresses a creation of noncondensed Cooper pairs. It is shown that condensed and noncondensed Cooper pairs are separated by an energy gap which is smaller than the superconducting gap but large enough to prevent nucleation in all other modes and to eliminate effects of noncondensed Cooper pairs on properties of superconductors. Our result thus justifies basic assumptions of the BCS theory and confirms that the BCS condensate is stable with respect to two-particle excitations.
RUNOFF AND SEDIMENT YIELD MODELING USING ARTIFICIAL NEURAL  NETWORK:  CASE OF MUGER WATERSHED, ABBAY RIVER BASIN, ETHIOPIA
Creators: name: SAID MESUED BEYENE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Surface runoff and sediment loadings are immense problems that have threatened water resources
development in the Muger river basin. The main objective of the study is to model runoff-sediment
yield for upper Muger catchment.  This paper has not included  identifying  the influence of
topography, land use, and soil on stream flow and sediment yield of the watershed and water
resource management scenario.  In order to overcome the objectives of the study the whole
computation was performed by using MATLAB software supporting nntoolbox were used for input
data preparation, analyzing and modeling purpose of the research. The effective application of
neural networks to runoff-sediment yield modelling requires; firstly, selection of an appropriate
neural network type. Secondly, selection of an appropriate training algorithm and determine an
appropriate network structure. Thirdly, one must decide how to pre-and post-process input-output
data. The model was trained and cross validated against measured flow and sediment yield data.
Statistic measures (RMSE, NSE, and R2
) were used to evaluate the performance of the model. The
results of the model training and validation showed reliable simulation of daily stream flow (R2

=0.90 and NSE=0.90) during model training and (R2
=0.88 and NSE=0.79) during model cross
validation. For sediment yield, the model performance of daily sediment yield  (R2
 =0.98  and
NSE=0.99) during model training and (R2
 =0.98 and NSE=0.99) during model cross validation
period.  Comparison of the results reveals that,  the model results showed a  fairly  good and
satisfactory agreement between daily observed and simulated  streamflow and sediment  yield
respectively.
Regular Interior Solutions to the Solution of Kerr which Satisfy the Weak and the Strong Energy Conditions
Creators: name: Kyriakopoulos, E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The line element of a class of solutions which match to the solution of Kerr on an oblate spheroid if the two functions $ F(r)$ and $H(r)$ on which it depends satisfy certain matching conditions is presented. The non vanishing components of the Ricci tensor $R_{μν}$, the Ricci scalar $ R$, the second order curvature invariant $K$, the eigenvalues of the Ricci tensor, the energy density $μ$, the tangential pressure $P_{\perp}$, and the quantity $μ+P_{\perp}$ are calculated. A function $F(r)$ is given for which $R$ and $K$ and therefore the solutions are regular. The function $ H(r) $ should be such that the solution it gives satisfies at least the Weak Energy Conditions (WEC). Several $H(r)$ are given explicitly for which the resulting solutions satisfy the WEC and also the Strong Energy Conditions (SEC) and the graphs of their $μ$, $P_{\perp}$ and $μ+P_{\perp}$ for certain values of their parameters are presented. It is shown that all solutions of the class are anisotropic fluid solutions and that there are no perfect fluid solutions in the class.
description: 25 pages, 15 figures
TECHNICAL AND MANAGEMENT PERFORMANCE EVALUATION OF SMALL  SCALE IRRIGATION: A CASE OF ZUMA IRRIGATION SCHEME IN AMHARA  REGION, ETHIOPIA
Creators: name: WUDINEH FELEKE ALEMU
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Zuma irrigation scheme was evaluated for the technical and management performances of the
irrigation scheme. The reason, performance based technical and management evaluation is a
principal approach to improve the scheme performance.  The study was done  during the
irrigation season  from October  to December, 2016. The technical evaluation was made by
taking some  selected performance indicators such as conveyance efficiency, water delivery
performance and maintenance indicators. Moreover, the management performance was done
by questionnaires.  Primary  data collection  included  field observation, household survey,
interview  and discussion with beneficiaries were done. Discharge measurements were also
done in the canals. The results indicated that the main canal conveyance efficiency was found
to be 88.2 and 97.8%. The conveyance efficiency of secondary canals was 74.8 and 84% at
the lower  and  middle secondary canal sections  respectively.  The actual water  delivery
performance of the main canal was 92%. This shows,  the current canal structures are  lower
than the design of the canal capacity. Management performance provided to the beneficiaries
was not the same as to the intended.
A Fourier method for the determination of focus for telescopes with stars
Creators: name: Tan, C. Y.
name: Schulz, B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We introduce a Fourier method (Fm) for the determination of best focus for telescopes with stars. Our method fits a power function, that we will derive in this paper, to a set of images taken as a function of focuser position. The best focus position is where the power is maximum. Fm was first tested with small refractor and Schmidt-Cassegrain (SCT) telescopes. After the successful small telescope tests, we then tested Fm with a 2 m Ritchey-Chrétien-Coudé (RCC). Our tests show that Fm is immune to the problems inherent in the popular half-flux diameter method.
description: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society (MNRAS) Published by Oxford University Press on behalf of the Royal Astronomical Society
Singular matrix Darboux transformations in the inverse scattering method
Creators: name: Pecheritsin, A. A.
name: Pupasov, A. M.
name: Samsonov, Boris F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Singular Darboux transformations, in contrast to the conventional ones, have a singular matrix as a coefficient before the derivative. We incorporated such transformations into a chain of conventional transformations and presented determinant formulas for the resulting action of the chain. A determinant representation of the Kohlhoff-von Geramb solution to the Marchenko equation is given.
description: 16 pages, 1 figure
title: ÐÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¼ÐµÑÐ¾Ð´Ð° Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð² Ð½Ð° Ð·Ð°Ð½ÑÑÐ¸ÑÑ Ð¿Ð¾ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½Ð¾Ð¼Ñ ÑÐ·ÑÐºÑ Ð¿ÑÐ¸ Ð¾Ð±ÑÑÐµÐ½Ð¸Ð¸ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð¿ÐµÑÐ²Ð¾Ð³Ð¾ ÐºÑÑÑÐ° Ð½ÐµÑÐ·ÑÐºÐ¾Ð²ÑÑ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾ÑÑÐµÐ¹
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: The usage of the project method in foreign language teaching to first year students of non-linguistic specialities
Creators: name: Ð§ÐµÑÐ½Ð°Ñ, ÐÑÐ¸Ð½Ð°
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: 2021
Subjects: Ð¾Ð±ÑÑÐµÐ½Ð¸Ðµ Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð¼Ñ ÑÐ·ÑÐºÑ
Ð¼ÐµÑÐ¾Ð´ Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð²
Ð¿ÑÐ¾ÐµÐºÑÐ½Ð°Ñ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ñ
Ð°ÐºÑÐ¸Ð²Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ
ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð²Ð½Ð°Ñ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ñ
teaching English
project method
project technology
active teaching methods
communicative approach
first year students

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸ÑÑÐ»ÐµÐ´ÑÐµÑÑÑ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð¼ÐµÑÐ¾Ð´Ð° Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð² Ð² ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð²Ð½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¸ Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð²-Ð¿ÐµÑÐ²Ð¾ÐºÑÑÑÐ½Ð¸ÐºÐ¾Ð² Ð½ÐµÑÐ·ÑÐºÐ¾Ð²ÑÑ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾ÑÑÐµÐ¹. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¾ÑÐ½Ð¾Ð²Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¼ÐµÑÐ¾Ð´Ð° Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð², Ð´Ð°Ð½Ñ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Ð¾Ð±ÑÐ¸Ñ ÑÐµÑÐ¼Ð¸Ð½Ð¾Ð², Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¿ÑÐ¸ÑÐ¾Ð»Ð¾Ð³Ð¾-Ð¿ÐµÐ´Ð°Ð³Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð²-Ð¿ÐµÑÐ²Ð¾ÐºÑÑÑÐ½Ð¸ÐºÐ¾Ð². Ð ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð¼ÐµÑÐ¾Ð´Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð±ÑÐ» Ð²ÑÐ±ÑÐ°Ð½ ÑÐ¾ÑÐ¼Ð¸ÑÑÑÑÐ¸Ð¹ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½Ñ, Ð² ÑÐ¾Ð´Ðµ ÐºÐ¾ÑÐ¾ÑÐ¾Ð³Ð¾ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸Ð»Ð¾ÑÑ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¼ÐµÑÐ¾Ð´Ð° Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð² Ñ ÑÑÐ°Ð´Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐ¼ ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð¼ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½Ð¾Ð¼Ñ ÑÐ·ÑÐºÑ. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ° Ð¿Ð¾ÐºÐ°Ð·Ð°Ð»Ð¸ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ðµ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð²Ð½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¸ Ð¿ÑÐ¸ Ð¸Ð·ÑÑÐµÐ½Ð¸Ð¸ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ·ÑÐºÐ°.
description: In the given work we research the effectiveness of the project method for the foreign language communicative competence formation in 5 teaching English to the first-year students of nonlinguistic faculties. The theoretical foundation of using the project method and the concepts of general terms are given, the psychological and pedagogical characteristics of first year students are considered. The educational experiment was chosen as the research method; during the work, the project method was compared with the traditional teaching. The experiment revealed an increase in the level of students' communicative competence in learning English.
APPRAISAL OF DESIGEN PRACTICE AND FAILURE OF RIVER DIVERSION FOR IRRIGATION SCHEMES: A CASE OF WADLA WOREDA NORTH WOLLO,  ETHIOPIA
Creators: name: KUMNEGER DESALEGN
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Wadla woreda is located  in south western parts of north wollo  zone at latitude of
11°36'35.03" N and longitude of 38°55'54.06"E. This study appraises the design practice
and failure of the river diversion structure for irrigation in the study area and identifying,
analyzing and categorizing of the main problems  were focus points. This study
considered by selecting five existing river diversion structures in different Kebeles of the
woreda to understand  the causes of the major failures of the structures  by considering
different aspects such as  pre-  and post-construction,  institutional aspects, planning
problems, social and operational problems and initial design  documents. In order to
identify and characterized the existing irrigation schemes field observation and
measurements, group discussions, interview and questionaries’ were used  to achieve the
objectives of this study and  analyzed by SPSS statistical software.  Arc-GIS 10.1 was
applied to delineate the watershed of the study area, pick  discharge estimated by  Soil
conservation system (SCS) and Auto CAD  -2007 used  for design purposes. The design
practice of the studied area is very poor.  In  these study areas most of the implemented
schemes are suffering from problems attributed to design, construction, and operation &
maintenance  that lead  to major failure of the structures. From the analysis  the maximum
value of  hydrology and sedimentation consideration, hydraulic design of weir  and
structural design of weir problems showed that 31%, 49% and 20%, respectively. Based
on the questioner,  interview and group discussion,  results  the maximum value indicates
absence of project idea of the community, water user association and lack of community
participation on construction are  100%, 96% and  100%  respectively.  Finally, failures
were due to  the problems  in the hydrologic, hydraulic and structural design of diversion
systems in addition to improper management of the schemes.
NUMERICAL INVESTIGATION ON THE PERFORMANCE OF GEO-SYNTHETIC REINFORCED BRIDGE ABUTMENT: IN CASE OF BRIDGE No. 5 OF BABILE - FIK ROAD PROJECT
Creators: name: GOYTOM KEBEDEW WELEGERIMA
Publisher: name: Zenodo
Year: 2020

description: Over the last two decades, the Civil Engineering community have started to implement geo-synthetic-reinforced soil (GRS) bridge abutment as an alternative to bridges abutment with rigid foundation systems. As a result, the performance of GRS bridge abutment structures in terms of their lateral deformations during construction and operation is a topic of current interest in the community.

Material input data for Numerical Model of the GRS bridge abutment are adopted from a secondary resource.

A two-dimensional numerical analysis is conducted using MIDAS GTS-NX finite element program. Mohr-Coulomb, Modified Mohr-Coulomb, and Linear Elastic constitute models are used to model the foundation soil, backfill soil and the other materials (i.e., geo-synthetic, riprap and facing block), respectively. The loading conditions used in analysis are the dead loads of the approach road, the foundation and abutment
Spectroscopic and Crystal-Chemical Features of Sodalite-Group Minerals from Gem Lazurite Deposits
Creators: name: Chukanov, Nikita V.
name: Sapozhnikov, Anatoly N.
name: Shendrik, Roman Yu.
name: Vigasina, Marina F.
name: Steudel, Ralf
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 546 Anorganische Chemie
subject: mineral
subject: sodalite group
subject: extra-framework species
subject: polysulfide groups
subject: infrared spectroscopy
subject: Raman spectroscopy
subject: UV-Visible spectroscopy
subject: ESR
subject: X-ray diffraction

description: Five samples of differently colored sodalite-group minerals from gem lazurite deposits were studied by means of electron microprobe and wet chemical analyses, infrared, Raman, electron spin resonance (ESR) and UV-Visible spectroscopy, and X-ray diffraction. Various extra-framework components (SO42−, S2− and Cl− anions, S3•−, S2•− and SO3•− radical anions, H2O, CO2, COS, cis- as well as trans- or gauche-S4 neutral molecules have been identified. It is shown that S3•− and S4 are the main blue and purple chromophores, respectively, whereas the S2•− yellow chromophore and SO3•− blue chromophore play a subordinate role. X-ray diffraction patterns of all samples of sodalite-group minerals from lazurite deposits studied in this work contain superstructure reflections which indicate different kinds of incommensurate modulation of the structures.
Lessons Learnt: Silvoarable agroforestry in the UK (Part 1)
Creators: name: Smith, Jo
name: Costanzo, Ambrogio
name: Fradgeley, Nick
name: Mullender, Samantha
name: Wolfe, Martin
Publisher: name: Zenodo
Year: 2017
Subjects: alley cropping; cereal populations; short rotation coppice; YieldSAFE

description: As a summary of three years of research carried out in the EU FP7 project Agforward, Jo Smith and colleagues at the Organic Research Centre in the UK have produced a "Lessons Learnt" report. Although willow has been widely promoted in the UK, their research shows that under the relatively dry conditions in Suffolk, the biomass and bio-energy yields of hazel can be as high as that for willow.  The effect of lines of SRC on spring oats, barley, and wheat yields were examined within a long-term programme investigating the effects of an evolutionary plant breeding approach.  With the possible exception of the oats,  the yield of each crop declined with greater proximity to uncoppiced tree rows.  The last part of the report demonstrates how the Yield-SAFE model can be used to describe the biomass production of crops and willow over time in different configurations.
MPEC 2025-G108 : 2016 WB88
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2016 WB88

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cost objective PLM and CE
Creators: name: Perry, Nicolas
name: Bernard, Alain
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Physics (physics.gen-ph)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: Concurrent engineering taking into account product life-cycle factors seems to be one of the industrial challenges of the next years. Cost estimation and management are two main strategic tasks that imply the possibility of managing costs at the earliest stages of product development. This is why it is indispensable to let people from economics and from industrial engineering collaborates in order to find the best solution for enterprise progress for economical factors mastering. The objective of this paper is to present who we try to adapt costing methods in a PLM and CE point of view to the new industrial context and configuration in order to give pertinent decision aid for product and process choices. A very important factor is related to cost management problems when developing new products. A case study is introduced that presents how product development actors have referenced elements to product life-cycle costs and impacts, how they have an idea bout economical indicators when taking decisions during the progression of the project of product development.
Advanced deterioration models for wastewater inspection prioritization
Creators: name: Balekelayi, Ngandu
Publisher: name: University of British Columbia
Year: 2019

description: Developing an accurate deterioration model for sewer pipes is the basic step to a successful wastewater infrastructure management. However, it is difficult to predict exactly the change in the condition of sewer pipes since they are buried, and several factors influence their condition changes. These factors are collected through inspection and the deterioration models are built to understand the way they affect the condition of sewer pipes. However, only few pipes are inspected and not all the needed factors are collected. Thus, models are made from uncertain and incomplete data resulting in simplified approaches for quick and easy interpretation of the results. In this research, two semi-parametric models are developed to predict the deterioration of sewer pipes. The first model predicts the expected mean deterioration score of sewer pipes and the second gives the complete distribution of the output response through the analysis of its quantiles. In both models, variables are grouped into categorical where an ordinary least square estimation of parameters is applied and continuous variables where nonlinear smooth functions P-splines are applied. To account for unobserved covariates, models are enhanced through the inclusion of geospatial location of pipes as surrogate covariate that is estimated through a Gaussian Markov Random Field approach. The application of these models to the sewer inspection data of the city of Calgary shows a good agreement between the predictions and the observations. The estimation of the risk of pipes failure passes through the identification of critical areas in the network and their rankings, a metric resulting from the aggregation of multiple graph theoretic centrality measures is calculated. Two frameworks are proposed including the Bayesian approach when the hydraulic data are available to estimate the baseline metric and the Ordered Weighting Averaging that considers the decision maker’s attitude. Finally, the value of the information provided by the deterioration models is used to orient future inspections in the network. From the deterioration models’ information and errors, the value of information is calculated for each pipe in the network. The obtained values are projected on a GIS map for different horizons to help decision makers orient their priorities.
Feeding the Accretion Disk from the Dusty Torus in a Reddened Quasar
Creators: name: Li, Ge
name: Shi, Xiheng
name: Tian, Qiguo
name: Sun, Luming
name: Shu, Xinwen
name: Chen, Xiangjun
name: Zhou, Hongyan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present here a detailed analysis of an unusual absorption line system in the quasar SDSS J122826.79+100532.2. The absorption lines in the system have a common redshifted velocity structure starting from $v\sim0$ and extending to $\sim1,000\ \mathrm{km~s}^{-1}$, and are clearly detected in hydrogen Balmer series up to H$ι$, in metastable neutral helium triplet, and in optical lines of excited states of single ionized iron. We estimated that the absorber has a density $n_{\mathrm{H}}\approx10^{8.4}\ \mathrm{cm}^{-3}$ and an ionization parameter $U\approx10^{-1.2}$, thereupon located it at $r_{\mathrm{abs}}\approx1.5$ pc from the central supermassive black hole. The inferred distance is remarkably similar to the evaporation radius for dust grains $r_{\mathrm{evap}}\approx1$ pc in the quasar. Thus the absorber may be a probe of an inflow starting from the dusty torus and feeding the accretion disk. Both the featureless continuum and the broad emission lines are heavily reddened with $E(B-V)\approx0.66$, in contrast to the narrow emission lines whose reddening is negligible. The dusty medium could be located in between the broad and narrow emission line regions, and possibly be associated with a 'cold' narrow absorption line system detected in \ion{Ca}{2} and \ion{Na}{1} doublets nearly unshifted from the quasar systemic velocity. SDSS J122826.79+100532.2 might represent such a rare case that both the inflow and the torus could be tracked by absorption lines.
description: Published in ApJ (2021, 919, 86)