cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Attitudes of Students, Parents and Teachers Towards the Promotion and Provision of Condoms for Adolescents in Addis Ababa
Creators: name: Eshetu, Fisseha
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 1994

description: A cross-sectional descriptive survey through a selfadministered, anonymous and structured questionnaire was conducted from September to December, 1993 in ten high schools in Addis Ababa to determine the sexual behaviour of adolescents, their knowledge about AIDS, attitudes and practices regarding condoms, their attitudes towards the promotion and distribution of condoms in schools, and towards the incorporation of health and sex education into the regular teaching curricula and into the teachers' training curricula. A total of 910 parents, 755 students and 232 teachers participated in the survey. The results showed that, of the 355 students, 39.8% of the boys and 5.6% of the girls have had a sexual experience. Peer pressure (35.2%) and by force (21.6%) were the most important factors that precipitated the first sexual encounter. 10 . 1% had coital contact with a commercial sex worker. Only 42.2% of the sexually active students used condoms on their first sexual encounter, and only 27 .7% used condoms continuously on their subsequent sexual encounters. 59.0% of the parents, 56.6% of the teachers and 37.7% of the students felt that most students have adequate knowledge about AIDS. Only 38.8% of the parents, 34.0% of the teachers and 42.8% the students felt that most students have adequate information about condoms. 61.2% of the students, 60 . 0% of the parents and 61.6% of the teachers approved the idea of condom distribution in schools. A stratified analysis identified only age for parents, sex for students and religion for teachers to have a statistically significant influence upon the attitude towards the distribution of condoms in schools. An overwhelming majority in each of the three categories, 92.6% of the students, 98.7% of the parents and 96.1% of the teachers, approved the incorporation of health education into the regular teaching curricula. 80.1% of the students, 90 . 9% of the parents and 96.1% of the teachers also supported the idea of sex education in schools. This study, based upon the findings, recommends that education and health policy makers to make a relent l ess effort to commence health and sex education by incorporating them into the regular curricula; the implementation of subsequent surveys to identify the most effective and acceptable routes of condom distribution in schools; and implementation of similar surveys in the rural settings to assess the attitudes in a different setting and acquire a more general overview for the whole country .
The functional gizzard morphology of an avian herbivore
Creators: name: Moore., Suzanne Jane
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Stoffdidaktik im Fokus – Das Beispiel Lineare (Un-)Abhängigkeit
Creators: name: Hoffkamp, Andrea
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Curriculumsentwicklung und (Weiter-)Entwicklung von Unterricht bedarf einer Planung, deren Hauptlast von einer „zeitgemäßen lernpsychologisch und mathematisch orientierten Stoffdidaktik getragen [wird]“ (Lambert, 2014). Exemplarisch wird im Artikel am Beispiel der Linearen (Un-)Abhängigkeit gezeigt, wie mit stoffdidaktischen Methoden Folgerungen für didaktisches Handeln und Curriculumsentwicklung in Schule und Hochschule gezogen werden können. In den Curricula der Bundesländer wird der Begriff der Linearen (Un-)Abhängigkeit, falls er überhaupt genannt wird, zumeist ausschließlich im geometrischen Kontext gesehen. Oftmals wird der Begriff durch die geometrischen Begriffe „Kollinearität“ und „Komplanarität“ ersetzt. Er spielt auch nur dann eine Rolle, wenn es um Lagebeziehungen von Geraden und Ebenen geht. Es gibt kein Curriculum, aus dem explizit hervorgeht, dass der Begriff aber auch bei Linearen Gleichungssystemen (LGS) und Lösbarkeitsfragen zentral ist. Im Gegenteil: Die Curricula suggerieren, dass LGS den Kalkülanteil darstellen, mit dessen Hilfe man Schnitt- bzw. Lageprobleme schematisch lösen kann, der aber keine strukturelle Verbindung zum Rest aufweist. Lehrende geraten deswegen schnell in die Falle der kochrezeptartigen Behandlung von Fragestellungen der analytischen Geometrie. Oftmals mangelt es an Flexibilität im Umgang mit der Materie. Um der beschriebenen Problemlage zu begegnen, werden im Folgenden stoffdidaktische Methoden verwendet. Als Leitfaden dient dabei die Zusammenstellung stoffdidaktischer Teilprozesse von Lambert (2014).
Assessment of prevalence of unintended pregnancy and understanding the reasons in preventing unintended pregnancy among youth in Ethiopia, 2019.
Creators: name: Emshaw, Tirfe
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Background: Globally every day 830 women die from preventable causes related to pregnancy and childbirth and 99% of maternal deaths occur in developing countries. Young people and adolescents face higher risk of complication. Unintended pregnancy among young people increases risk of maternal morbidity and mortality. Objectives: The objectives of this study are to estimate the prevalence of unintended pregnancy among youth in Ethiopia and to explore the factors associated with the unintended pregnancy. Methods: We employed mixed methods. The quantitative part applied cross sectional study design using data from Ethiopian Demographic and Health Survey (EDHS) 2016. The dataset was accessed online www.measuredhs.com. The qualitative method applied in- depth interview of purposively selected 15-24 years old female who visited health facilities for antenatal or abortion care service. Quantitative data was analyzed using STATA version 14 software. Descriptive and binary logistical regression analysis techniques were used to estimate the prevalence unintended pregnancy and identify factors associated with unintended pregnancy. Qualitative data was analyzed by open code version 4.02 using content analysis method. Result: Four hundred youths (6.5%) were found to be pregnant from a total of 6,143 (weighted) youths who participated in the 2016 EDHS. Among the pregnant youths 141(35.3%) had no education, 197(49.3%) attended primary school, 372 (93%) were married, 235(58.8%) were unemployed, and 343(85.7%) live in rural area. The prevalence of unintended pregnancy among pregnant youth was 25%. In-depth interview data analysis showed contraceptive failure, not using any modern contraceptive, low risk prediction, lack of support by family, partner disagreement and desire to continue education were found to be the main reasons for having unintended pregnancy. Conclusion and Recommendation: The prevalence of unintended pregnancy among youth in Ethiopia is high. Effort should focus on empowering women to make them psychological and economic independent to enable them decide about their pregnancy. Changing the wrong belief and perception on modern contraception in the community is important to improve utilization of those methods by young women.
Twist-4 contributions to semi-inclusive deeply inelastic scatterings with polarized beam and target
Creators: name: Wei, Shu-yi
name: Song, Yu-kun
name: Chen, Kai-bao
name: Liang, Zuo-tang
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present for the first time the complete twist-4 result for the semi-inclusive deeply inelastic scattering $e^- N \to e^-qX$ with polarized electron and proton beams at the tree level of pQCD. The calculations have been carried out using the formulism obtained after collinear expansion where the multiple gluon scattering are taken into account and gauge links are obtained automatically in a systematical way. The results show in particular that there are twist-4 contributions to all the eight twist-2 structure functions for $e^- N \to e^-hX$ that correspond to the eight twist-2 transverse momentum dependent parton distribution functions. Such higher twist effects could be very significant and therefore have important impacts on extracting these three-dimensional parton distribution functions from the asymmetry data on $e^- N \to e^-hX$. We suggest also an approximate way for a rough estimation of such higher twist contributions.
description: 5 pages
Accessing and processing sensitive data in Galaxy
Creators: name: Gundersen, Sveinung
name: Codó, Laia
name: Petersen, Kjell
name: Fernández, José M.
name: Chavero-Diez, María
name: Pável Vázquez
name: Abdulrahman Azab
name: Tangaro, Marco A.
name: Poterlowicz, Krzysztof
name: Coppens, Frederik
name: Gelpí, Josep Ll.
name: Grüning, Björn
name: Capella-Gutierrez, Salvador
Publisher: name: F1000 Research Limited
Year: 2023

description: In the context of the ELIXIR Implementation Study ‘Strengthen Data Management in Galaxy’, novel data handling strategies are being explored for enhancing access and processing of sensitive datasets from Galaxy instances in a secure and scalable manner. To this end, we propose an approach to access, transfer and process (F)EGA Crypt4GH encrypted datasets into a secure environment using a multi-user public Galaxy instance as enactor and controller of the full process.

 Although Galaxy already supports the use of encrypted data, it is typically implemented at the data volume level rather than at the user level. Crypt4GH is a format for encrypting and decrypting genomic data developed by the Global Alliance for Genomics and Health (GA4GH), that combines symmetric and asymmetric encryption. The proposed flow is built upon the Crypt4GH format for securely re-encrypting (F)EGA datasets. It is the user from its desktop application who entitles the controlled computational backend where data is to be processed to decrypt the data for a limited period of time. In this way, the content of the file always remains encrypted in the Galaxy system.

 In order to demonstrate the viability of the proposed approach, a minimal functional prototype has been constructed as a proof of concept.
Sunrise integral in non-relativistic QCD with elliptics
Creators: name: Kotikov, A. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The main steps of the process of obtaining the result [1] in terms of elliptic polylogarithms for a two-loop sunrise integral with two different internal masses with pseudothreshold kinematics for all orders of the dimensional regulator are shown.
description: 7 pages, contribution to the proceedings of the International Conference on Quantum Field Theory, High-Energy Physics, and Cosmology (July 18 - 21, 2022; Dubna, Russia)
Aspects of the stability of heavy metal fluoride glasses
Creators: name: Moore., Lindsay John
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Accessing and processing sensitive data in a public Galaxy server
Creators: name: Gundersen, Sveinung
name: Codó, Laia
name: Petersen, Kjell
name: Fernández, José M.
name: Chavero-Diez, María
name: Pável Vázquez
name: Abdulrahman Azab
name: Tangaro, Marco A.
name: Poterlowicz, Krzysztof
name: Coppens, Frederik
name: Gelpí, Joseph Ll.
name: Grüning, Björn
name: Capella-Gutierrez, Salvador
Publisher: name: F1000 Research Limited
Year: 2023

description: In the context of the ELIXIR Implementation Study ‘Strengthen Data Management in Galaxy’, novel data handling strategies are being explored for enhancing access and processing of sensitive datasets from Galaxy instances in a secure and scalable manner. To this end, we propose an approach to access, transfer and process (F)EGA Crypt4GH encrypted datasets into a secure environment using a multi-user public Galaxy instance as enactor and controller of the full process.

 Although Galaxy already supports the use of encrypted data, it is typically implemented at the data volume level rather than at the user level. Crypt4GH is a format for encrypting and decrypting genomic data developed by the Global Alliance for Genomics and Health (GA4GH), that combines symmetric and asymmetric encryption. The proposed flow is built upon the Crypt4GH format for securely re-encrypting (F)EGA datasets. It is the user from its desktop application who entitles the controlled computational backend where data is to be processed to decrypt the data for a limited period of time. In this way, the content of the file always remains encrypted in the Galaxy system.

 In order to demonstrate the viability of the proposed approach, a minimal functional prototype has been constructed as a proof of concept.
Entanglement and geometry from subalgebras of the Virasoro algebra
Creators: name: Caputa, Pawel
name: Ge, Dongsheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we study families of generalised coherent states constructed from SL(2,R) subalgebras of the Virasoro algebra in two-dimensional conformal field theories. We derive the energy density and entanglement entropy and discuss their equivalence with analogous quantities computed in locally excited states. Moreover, we analyze their dual, holographic geometries and reproduce entanglement entropies from the Ryu-Takayanagi prescription. Finally, we outline possible applications of this universal class of states to operator growth and inhomogeneous quenches.
description: 37 pages, 8 figures, add references and revise sec 4.2
H-alpha features with hot onsets III. Fibrils in Lyman-alpha and with ALMA
Creators: name: Rutten, Robert J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In H-alpha most of the solar surface is covered by dense canopies of long opaque fibrils, but predictions for quiet-Sun observations with ALMA have ignored this fact. Comparison with Ly-alpha suggests that the large opacity of H-alpha fibrils is caused by hot precursor events. Application of a recipe that assumes momentary Saha-Boltzmann extinction during their hot onset to millimeter wavelengths suggests that ALMA will observe H-alpha-like fibril canopies, not acoustic shocks underneath, and will yield data more interesting than if these canopies were transparent.
description: Accepted for Astronomy & Astrophysics; Figure 1 corrected
Perceived Sufficiency and Usefulness of IEC Materials and Methods on HIV/AIDS among High school youth in Addis Ababa
Creators: name: Cherie, Amsale
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2002

description: Information on the perception of youth about HIV/AIDS IEC messages and materials is meager in Ethiopia. This cross sectional survey was conducted from November 2001 to April 2002 in randomly selected high school students in Addis Ababa, Ethiopia. The objective was to assess the perceived sufficiency and usefulness of HIV/AIDS IEC messages and materials as well as to identify their preferences. Data were collected using a pre-tested anonymous self-administered questionnaire and focus group discussion. A total of 901 high school students from 23 schools participated in the survey. Of these, 464(51.7%) were females. All the study subjects have heard of AIDS. The most common sources of information about HIV/AIDS were radio 628(69.7%), television 516(57.3%), Anti AIDS Clubs 497(55.2%), family members 481(53.45) health professionals 438(48.6%) religious leaders 405(45%) and friends 307(34%). IEC on HIV/AIDS was perceived useful in influencing knowledge, attitude and practice by 761(85.4%), 704(78.1%) and 676(75%) students respectively and efforts were perceived sufficient to affect knowledge by almost half of the respondents 456(50.6%). On the contrary, the majority of students perceive that IEC messages and materials were not sufficient enough to trigger proper attitude 544(60.4%) and acquire/maintain safe practices 519(57.6%). On top of that, none of the information sources were regarded as highly credible in the face of their audiences and, none of the messages delivered were rated as highly understandable, appropriate, timely, 9 practically applicable, accessible and compatible with the needs and expectations of youth. Although, no information source was highly preferred, mass media, health professionals, religious leaders, family and Anti AIDS Clubs were the top five sources chosen. Appropriate information and education about all aspects of HIV/AIDS and life skill training were the content liked better to be transmitted through drama, school lesson, and discussion. The preferred time to be taught by radio/TV is evening after 8.00 pm and Saturday and Sunday afternoon. In conclusion, HIV/AIDS IEC messages and materials were only able to acquaint students with the disease rather than equipping them with the necessary domains relevant to their day-to-day life. Therefore, coordinated, purposeful, appropriate, and mutually reinforcing IEC messages with emphasis on life skill training are recommended.
Ferramentas open-source de qualidade de dados para licitações públicas: Uma análise comparativa
Creators: name: Oliveira, Gabriel P.
name: Reis, Arthur P. G.
name: Mendes, Bárbara M. A.
name: Bacha, Clara A.
name: Costa, Lucas L.
name: Canguçu, Gabriel L.
name: Silva, Mariana O.
name: Caetano, Victor
name: Brandão, Michele A.
name: Anisio Lacerda
name: Gisele L. Pappa
Publisher: name: Zenodo
Year: 2022
Subjects: qualidade de dados
licitações públicas

description: Material Suplementar do artigo "Ferramentas open-source de qualidade de dados para licitações públicas: Uma análise comparativa", publicado no 37º Simpósio Brasileiro de Banco de Dados (SBBD). Resumo: Dados são cada vez mais utilizados como suporte à decisão em diferentes contextos. Para que essas decisões sejam confiáveis e precisas, é necessário garantir a qualidade dos dados. Nesse contexto, este trabalho apresenta um breve comparativo de oito ferramentas open-source de qualidade de dados, e justifica a escolha de uma delas para análise de um armazém de dados reais e volumosos formado por licitações públicas. Finalmente, nossas análises mostram que a ferramenta Great Expectations possui características relevantes para gerar bons indicadores de qualidade de dados, garantindo assim que os dados de licitações públicas possam auxiliar na tomada de decisões.
End the wildcard tyranny! Embrace path-based Interactive tools!
Creators: name: Gundersen, Sveinung
name: Johansen, Morten
name: Coraor, Nate
name: Rasche, Helena
Publisher: name: F1000 Research Limited
Year: 2023

description: The possibility of wrapping any web-based service as a container-based interactive tool (IT) is a powerful feature of Galaxy. However, Galaxy admins often experience an inordinate amount of hassle setting up interactive tools on a shared Galaxy instance and often decide against supporting ITs. A major part of this hassle is due to the requirement of setting up a wildcard DNS entry and obtaining a wildcard SSL certificate. Wildcard SSL certificates are more expensive and less secure than normal certificates and are also often prohibited in university or company regulations.

 The option of serving interactive tools under a unique path instead of a unique subdomain was added as an undocumented feature in version 2019.1 of Galaxy. However, this feature stopped working in version 2022.5 due to the move from uWSGI to gunicorn as the built-in web server of Galaxy. The feature was never widely used, we assume due to lack of documentation as well as lack of support from the interactive tools themselves. From version 2023.0, support for path-based interactive tools is back and now with a more robust implementation due to explicit support in the "gx-it-proxy" server!

 This presentation will provide a technical overview of the issue and show how to update an interactive tool to become path-based (a PR planned for version 2023.1 will make this easier than ever!). Moreover, the presentation is a call to arms for Galaxy developers to make an effort and update all interactive tools to become path-based and consequently end the tyranny of wildcard SSLs once and for all! Perhaps we can make this a reality already during the GCC2023 CoFest?
Η μαρτυρία του συγκατηγορουμένου κατά το νεοπαγές άρθρο 211 ΚΠΔ
Creators: name: Μαρουλάκη, Αικατερίνη Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Ενοχοποιητική κατάθεση συγκατηγορουμένου
Ρητά κατονομαζόμενο αποδεικτικό μέσο
Αποδεικτικός Περιορισμός
Μοναδικό αποδεικτικό στοιχείο
Codefendant - incriminating statement
Explicitly named means of evidence
Evidentiary Restriction - Evidential limitation
Sole Evidence

description: Η παρούσα μελέτη πραγματεύεται τον αποδεικτικό περιορισμό του άρθρου 211 ΚΠΔ, βάσει του οποίου η κατάθεση του συγκατηγορουμένου δεν επιτρέπεται να αξιολογηθεί για την έκδοση καταδικαστικής απόφασης σε βάρος του ενοχοποιούμενου κατηγορουμένου, όταν αυτή αποτελεί το μοναδικό στοιχείο ενοχής. αΑναλυτικότερα, στο πρώτο μέρος της εργασίας παρουσιάζεται η νομοθετική εξέλιξη και η δογματική ανάλυση του άρθρου 211 ΚΠΔ. Στο πλαίσιο αυτό, εξετάζονται τα σημαντικότερα θεωρητικά και πρακτικά ζητήματα που απασχόλησαν την επιστήμη και τη νομολογία κατά την εφαρμογή της διάταξης. Ακολουθεί το δεύτερο μέρος της εργασίας, το οποίο επικεντρώνεται στην ισχύουσα μορφή του άρθρου 211 ΚΠΔ, όπως αυτή διαμορφώθηκε μετά την πρόσφατη τροποποίηση του ν. 4855/2021. Ελλείψει νομολογίας επιχειρείται μια θεωρητική προσέγγιση των νέων νομοθετικών απαιτήσεων και καταγράφονται σκέψεις τόσο σε σχέση με την ορθή εφαρμογή της διάταξης από τα δικαστήρια της ουσίας όσο και σε σχέση με τον ουσιαστικότερο αναιρετικό έλεγχο που μπορεί πλέον (μετά τις πρόσφατες καθοριστικές νομοθετικές μεταβολές) να αναμένεται με αισιοδοξία
description: The present study deals with the evidentiary limitation of Article 211 of the CCP (: Code of Criminal Procedure), under which the testimony of a co-defendant must not be evaluated for the purpose of obtaining a conviction against the incriminated defendant, in condition it is the sole evidence of guilt. More specifically, the first part of the paper presents the legislative development and the doctrinal analysis of Article 211 CCP. In this context, the most important theoretical and practical issues that have concerned science and jurisprudence during the process of implementing the provision are examined. The second part of the following paper focuses on the current form of Article 211 CCP, as it was formulated after the recent amendment of Law no. 4855/2021. Since there is no case law yet, a theoretical approach to the new legislative requirements is attempted and thoughts are recorded on both the correct way of applying the provision by the substantive courts and on how to achieve a more substantial appellate review, which can now (after the recent decisive legislative changes) be expected with optimism
Anomalous transport in pseudospin-1 fermions
Creators: name: Singh, Adesh
name: Sharma, G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Electronic transport in the $α-\mathcal{T}_3$ model of pseudospin-1 fermions with a finite gap is studied within the semiclassical Boltzmann approximation. We show that coupling of the orbital magnetic moment to the external magnetic field, which is otherwise absent in the massless model, breaks valley symmetry, results in finite and measurable corrections to the longitudinal and Hall conductivity, and yields anomalous Hall conductivity due to the Berry curvature. We also show that, remarkably, magnetoresistance induced by the orbital magnetic moment can be either positive or negative; the sign depends on the amount of disorder, and is different for both conventional and anomalous contributions to the magnetoresistance. Recent material advances and upcoming experiments on cold atoms that may realize pseudospin-1 fermions makes our study timely and appropriate.
description: 9 pages, 9 figures
Non-standard interactions and the resolution of ordering of neutrino masses at DUNE and other long baseline experiments
Creators: name: Masud, Mehedi
name: Mehta, Poonam
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In the era of precision neutrino physics, we study the influence of matter NSI on the question of neutrino mass ordering and its resolution. At long baseline experiments, since matter effects play a crucial role in addressing this very important question, it is timely to investigate how sub-leading effects due to NSI may affect and drastically alter inferences pertaining to this question. We demonstrate that the sensitivity to mass ordering gets significantly impacted due to NSI effects for various long baseline experiments including the upcoming long baseline experiment, Deep Underground Neutrino Experiment (DUNE). Finally we draw a comparison of DUNE, with the sensitivities offered by two of the current neutrino beam experiments NOvA and T2K.
description: v3 : new references and modified text, accepted in Phys. Rev. D. arXiv admin note: text overlap with arXiv:1603.01380
Extracting Quantum Many-Body Scarred Eigenstates with Matrix Product States
Creators: name: Zhang, Shun-Yao
name: Yuan, Dong
name: Iadecola, Thomas
name: Xu, Shenglong
name: Deng, Dong-Ling
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum many-body scarred systems host nonthermal excited eigenstates immersed in a sea of thermal ones. In cases where exact expressions for these special eigenstates are not known, it is computationally demanding to distinguish them from their exponentially many thermal neighbors. We propose a matrix-product-state (MPS) algorithm, dubbed DMRG-S, to extract such states at system sizes far beyond the scope of exact diagonalization. Using this technique, we obtain scarred eigenstates in Rydberg-blockaded chains of up to 80 sites and perform a finite-size scaling study to address the lingering question of the stability for the Néel state revivals in the thermodynamic limit. Our method also provides a systematic way to obtain exact MPS representations for scarred eigenstates near the target energy without a priori knowledge. In particular, we find several new scarred eigenstates with exact MPS representations in kinetically constrained spin and clock models. The combination of numerical and analytical investigations in our work provides a new methodology for future studies of quantum many-body scars.
description: 7+14 pages, 3+9 figures
Mobility of an axisymmetric particle near an elastic interface
Creators: name: Daddi-Moussa-Ider, Abdallah
name: Lisicki, Maciej
name: Gekle, Stephan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using a fully analytical theory, we compute the leading order corrections to the translational, rotational and translation-rotation coupling mobilities of an arbitrary axisymmetric particle immersed in a Newtonian fluid moving near an elastic cell membrane that exhibits resistance towards stretching and bending. The frequency-dependent mobility corrections are expressed as general relations involving separately the particle's shape-dependent bulk mobility and the shape-independent parameters such as the membrane-particle distance, the particle orientation and the characteristic frequencies associated with shearing and bending of the membrane. This makes the equations applicable to an arbitrary-shaped axisymmetric particle provided that its bulk mobilities are known, either analytically or numerically. For a spheroidal particle, these general relations reduce to simple expressions in terms of the particle's eccentricity. We find that the corrections to the translation-rotation coupling mobility are primarily determined by bending, whereas shearing manifests itself in a more pronounced way in the rotational mobility. We demonstrate the validity of the analytical approximations by a detailed comparison with boundary integral simulations of a truly extended spheroidal particle. They are found to be in a good agreement over the whole range of applied frequencies.
description: Published as: J. Fluid Mech. 811, 210-233 (2017)
Incidence and Factors Predicting Active TB Occourance among Patients Enrolled in Art, Zewditu Hospital, Addis Ababa, Retrospective Cohort Study.
Creators: name: Nigussie, Mahlet
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: Background: Tuberculosis is a major opportunistic infection among people living with HIV (PLWH). Antiretroviral Therapy (ART) was introduced in National AIDS Control Programme to reduce the morbidity and mortality among those affected with HIV/AIDS. Even though ART reduces tuberculosis (TB) incidence, risk of TB remains high after ART initiation. However determinants of active TB among HIV patients on ART are not well described in resource limited settings like Ethiopia. Objectives: To determine incidence and factors predicting active TB occurrence among patients enrolled in ART, in Zewditu Hospital, Addis Ababa. Methods: A five year institution based retrospective follow up study was conducted by chart review. All adult PLWHs newly enrolled on ART at Zewiditu hospital from September 11, 2009 to August 31, 2010, was identified from electronic data base and register. And those who fulfilled the inclusion criteria were retrospectively followed for different periods in five years until March, 2015. The pretested data collection tool was used in order to extract information's from patient chart. Incidence rate of tuberculosis was calculated. Cox proportional hazard regression model was used to identify predictors. Results: A total of 480 patients were followed and produced 1952.5 Person-Years (PY) of observation, and 70 new TB cases observed during the follow up period. The overall incidence density of TB was 3.59 per 100 PY. It was high (76.59/100PY) in the first year of enrolment. The cumulative proportion of TB- free survivals was 90% and 80% at the end of the first and fifth years, respectively. After adjustment for potential confounders the presence of INH prophylaxis (AHR=0.49, 95%CI=0.26-0.94), baseline WHO clinical stage III or IV (AHR =2.37, 95%CI = 1.41-3.96), CD4 count <100 cell/ul (AHR 7.48,CI=2.86- 19.5), CD4 count between 101-200 cell/ul (AHR 3.53, CI=1.33-9.34), Hgb level less than 10 mg/dl (AHR= 2.32, CI=1.13-4.78), being addicted (AHR = 1.78, CI=1.07-2.96) and poor adherence (AHR=2.98, 95%CI 1.36-6.52) were predictors of time to TB occurrence in multivariate analysis. Conclusions: IPT associated in reducing TB incidence so IPT service should be strengthening among PLWHIV. Intensified screening is highly recommended during treatment follow up for those who have advanced disease condition (WHO clinical stage III/IV, CD4 count below 200 and having hemoglobin level below10 mg/dl) and in the first year of follow up. Strengthen ongoing adherence and positive living counseling also recommended.
On anomalies and gauging of U(1) non-invertible symmetries in 4d QED
Creators: name: Karasik, Avner
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we propose a way to promote the anomalous axial U(1) transformations to exact non-invertible U(1) symmetries. We discuss the procedure of coupling the non-invertible symmetry to a (dynamical or background) gauge field. We show that as part of the gauging procedure, certain constraints are imposed to make the gauging consistent. The constraints emerge naturally from the form of the non-invertible U(1) conserved current. In the case of dynamical gauging, this results in new type of gauge theories we call non-invertible gauge theories: These are gauge theories with additional constraints that cancel the would-be gauge anomalies. By coupling to background gauge fields, we can discuss 't-Hooft anomalies of non-invertible symmetries. We show in an example that the matching conditions hold but they are realized in an unconventional way. Turning on non-trivial background for the non-invertible gauge field changes the vacuum even when the symmetry is not broken and the background is very weak. The anomalies are then matched by the appearance of solitons in the new vacuum.
description: Added an appendix and made some changes
Band alignment and charge transfer in complex oxide interfaces
Creators: name: Zhong, Zhicheng
name: Hansmann, Philipp
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The synthesis of transition metal heterostructures is currently one of the most vivid fields in the design of novel functional materials. In this paper we propose a simple scheme to predict \emph{band alignment }and \emph{charge transfer} in complex oxide interfaces. For semiconductor heterostructures band alignment rules like the well known Anderson or Schottky-Mott rule are based on comparison of the work function or electron affinity of the bulk components. This scheme breaks down for oxides due to the invalidity of a single workfunction approximation as recently shown (Phys. Rev. B 93, 235116; Adv. Funct. Mater. 26, 5471). Here we propose a new scheme which is built on a continuity condition of valence states originating in the compounds' shared network of oxygen. It allows for the prediction of sign and relative amplitude of the intrinsic charge transfer, taking as input only information about the bulk properties of the components. We support our claims by numerical density functional theory simulations as well as (where available) experimental evidence. Specific applications include i) controlled doping of SrTiO$_3$ layers with the use of 4$d$ and 5$d$ transition metal oxides and ii) the control of magnetic ordering in manganites through tuned charge transfer.
description: Comments and suggestions are welcome
Dynamics of nanosecond laser pulse propagation and of associated instabilities in a magnetized underdense plasma
Creators: name: Yao, W.
name: Higginson, A.
name: Marquès, J. -R.
name: Antici, P.
name: Béard, J.
name: Burdonov, K.
name: Borghesi, M.
name: Castan, A.
name: Ciardi, A.
name: Coleman, B.
name: Chen, S. N.
name: d'Humières, E.
name: Gangolf, T.
name: Gremillet, L.
name: Khiar, B.
name: Lancia, L.
name: Loiseau, P.
name: Ribeyre, X.
name: Soloviev, A.
name: Starodubtsev, M.
name: Wang, Q.
name: Fuchs, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The propagation and energy coupling of intense laser beams in plasmas are critical issues in laser-driven inertial confinement fusion. Applying magnetic fields to such a setup has been evoked to enhance fuel confinement and heating, and mitigate laser energy losses. Here we report on experimental measurements demonstrating improved transmission and increased smoothing of a high-power laser beam propagating in an underdense magnetized plasma. We also measure enhanced backscattering, which our simulations show is due to hot electrons confinement, thus leading to reduced target preheating.
An ultrastructural comparison of calcium carbonate forms in cephalopod shells
Creators: name: Mitchell., Peter R.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Coherence-Assisted Superradiant Laser with Hz Linewidth and $10^{-10}$W Power
Creators: name: Dong, Guohui
name: Yao, Yao
name: Zhang, Peng
name: Xu, Dazhi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The superradiant laser, based on the clock transition between the electric ground state $^1$S$_0$ and the metastable state $^3$P$_0$ of fermionic alkaline-earth(-like) atoms, has been proposed to be a new promising light source with linewidth being the order of millihertz. However, due to the small $^1$S$_0$-to-$^3$P$_0$ transition strength, the steady-state power in that system is relatively low ($\sim 10^{-12}$W). In this work, we propose an alternative superradiant laser scheme based on a Raman-transition-induced coupling between the $^3$P$_0$ and $^3$P$_1$ states in bosonic alkaline-earth(-like) atoms, and achieve a laser with linewidth $\lesssim 2π\times1$Hz and power $\gtrsim 10^{-10}$W ($\sim 10^{3}$ photons in steady state) at a small pumping cost. The Raman beams play two significant roles in our scheme. First, the coherence between the dark and bright states induced by the Raman beams produce a new local minimum in the pumping-linewidth curve with pumping rate lower than $2π\times 10$kHz, which is beneficial for continuous output. Second, the Raman beams mix the long-lived $^3$P$_0$ state into the lasing state and thus reduce the linewidth. Our work greatly improves the output performance of the superradiant laser system with coherence induced by Raman transitions and may offer a firm foundation for its practical use in future.
D3-D5 theories with unquenched flavors
Creators: name: Conde, Eduardo
name: Lin, Hai
name: Penin, Jose Manuel
name: Ramallo, Alfonso V.
name: Zoakos, Dimitrios
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the string duals of the defect theories generated when N_f flavor D5-branes intersect N_c color D3-branes along a 2+1 dimensional subspace. We work in the Veneziano limit in which N_c and N_f are large and N_f/N_c is fixed. By smearing the D5-branes, we find supergravity solutions that take into account the backreaction of the flavor branes and preserve two supercharges. When the flavors are massless the resulting metric displays an anisotropic Lifshitz-like scale invariance. The case of massive quarks is also considered.
description: 29 pages, 1 figure; v2: references added
Toward (Finally!) Ruling Out Z and Higgs Mediated Dark Matter Models
Creators: name: Escudero, Miguel
name: Berlin, Asher
name: Hooper, Dan
name: Lin, Meng-Xiang
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In recent years, direct detection, indirect detection, and collider experiments have placed increasingly stringent constraints on particle dark matter, exploring much of the parameter space associated with the WIMP paradigm. In this paper, we focus on the subset of WIMP models in which the dark matter annihilates in the early universe through couplings to either the Standard Model $Z$ or the Standard Model Higgs boson. Considering fermionic, scalar, and vector dark matter candidates within a model-independent context, we find that the overwhelming majority of these dark matter candidates are already ruled out by existing experiments. In the case of $Z$ mediated dark matter, the only scenarios that are not currently excluded are those in which the dark matter is a fermion with an axial coupling and with a mass either within a few GeV of the $Z$ resonance ($m_{\rm DM} \simeq m_Z/2$) or greater than 200 GeV, or with a vector coupling and with $m_{\rm DM} > 6$ TeV. Several Higgs mediated scenarios are currently viable if the mass of the dark matter is near the Higgs pole ($m_{\rm DM} \simeq m_H/2$). Otherwise, the only scenarios that are not excluded are those in which the dark matter is a scalar (vector) heavier than 400 GeV (1160 GeV) with a Higgs portal coupling, or a fermion with a pseudoscalar (CP violating) coupling to the Standard Model Higgs boson. With the exception of dark matter with a purely pseudoscalar coupling to the Higgs, it is anticipated that planned direct detection experiments will probe nearly the entire range of models considered in this study.
description: Corrected an error on the relic abundance curves in the high mass region for the Z mediated models and for fermionic dark matter mediated by the Higgs. Some figures changed accordingly. Conclusions remain unchanged but for the case of a fermionic dark matter with purely axial couplings to the Z. References added
Quantum corrections in nanoplasmonics: shape, scale, and material
Creators: name: Christensen, Thomas
name: Yan, Wei
name: Jauho, Antti-Pekka
name: Soljačić, Marin
name: Mortensen, N. Asger
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The classical treatment of plasmonics is insufficient at the nanometer-scale due to quantum mechanical surface phenomena. Here, an extension to the classical paradigm is reported which rigorously remedies this deficiency through the incorporation of first-principles surface response functions - the Feibelman d-parameters - in general geometries. Several analytical results for the leading-order plasmonic quantum corrections are obtained in a first-principles setting; particularly, a clear separation of the roles of shape, scale, and material is established. The utility of the formalism is illustrated by the derivation of a modified sum-rule for complementary structures, a rigorous reformulation of Kreibig's phenomenological damping prescription, and an account of the small-scale resonance-shifting of simple and noble metal nanostructures. These insights open the technological design space and deepen our fundamental understanding of nanoplasmonics beyond the classical regime.
description: 6 pages, 3 figures, 1 table (Supporting Material included as ancillary file)
Uniform anderson scaling in the Kondo problem
Creators: name: Mirtschin., Andrew Wesley
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
LHC production of forward-center and forward-forward di-jets in the $k_t$-factorization $unintegrated$ parton distribution frameworks
Creators: name: Modarres, M.
name: Masouminia, M. R.
name: Aminzadeh-Nik, R.
name: Hosseinkhani, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The present work is devoted to study the high-energy $QCD$ events, such as the di-jet productions from proton-proton inelastic collisions at the $LHC$ in the forward-center and the forward-forward configurations, using the $unintegrated$ parton distribution functions ($UPDF$) in the $k_t$-factorization framework. The $UPDF$ of $Kimber$ et. al. ($KMR$) and $Martin$ et.al. ($MRW$) are generated in the leading order ($LO$) and next-to-leading order ($NLO$), using the $Harland-Lang$ et al. ($MMHT2014$) $PDF$ libraries. While working in the forward-center and the forward-forward rapidity sectors, one can probe the parton densities at very low longitudinal momentum fractions ($x$). Therefore, such a computation can provide a valuable test-field for these $UPDF$. We find very good agreement with the corresponding di-jet production data available from $LHC$ experiments. On the other hand, as we have also stated in our previous works, (i.e. the protons longitudinal and transverse structure function as well as hadron-hadron $LHC$ $W/Z$ production), the present calculations based on the $KMR$ prescriptions show a better agreement with the corresponding experimental data. This conclusion is achieved, due to the particular visualization of the angular ordering constraint ($AOC$), despite the fact that the $LO-MRW$ and the $NLO-MRW$ formalisms both employ better theoretical descriptions of the $Dokshitzer$-$Gribov$-$Lipatov$ -$Altarelli$-$Parisi$ ($DGLAP$) evolution equation, and hence are expected to produce better results. The form of the $AOC$ in the $KMR$ prescription automatically includes the re-summation of the higher-order $ln({1/x})$ type contributions, i.e. the $Balitski$-$Fadin$-$Kuraev$-$Lipatov$ ($BFKL$) logarithms, in the $LO$-$DGLAP$ evolution equation.
title: Die Ausweitung von Instabilität?
title: Beschäftigungsdauern und betriebliche Beschäftigungssysteme (BBSS)
titleType: AlternativeTitle
title: Increasing instability? Tenures and firm employment subsystems (FESS)
titleType: AlternativeTitle
Creators: name: Struck, Olaf
name: Köhler, Christoph
name: Goetzelt, Ina
name: Grotheer, Michael
name: Schröder, Tim
Publisher: name: Lucius & Lucius Verlagsgesellschaft
Year: 2006
Subjects: subject: employment stability
subject: employment risks
subject: internal labour markets
subject: external labour markets
subject: firm employment subsystems
subject: labour market segmentation
subject: Arbeitsmarktsegmentation
subject: Beschäftigungsrisiko
subject: Beschäftigungsstabilität
subject: Betriebliche Beschäftigungssysteme
subject: externe Arbeitsmärkte
subject: interne Arbeitsmärkte
subject: 300
subject: 650

description: Der Aufsatz stellt die Frage nach der Erosion Interner Arbeitmärkte und der Generalisierung von Beschäftigungsrisiken und Prekarität in West- und Ostdeutschland. Quantitative Analysen von betrieblicher Beschäftigungspolitik und der Beschäftigungsepisoden von Individuen belegen eine Koexistenz von langfristiger mit kurz- und mittelfristiger Beschäftigung, wobei letztere seit Beginn der neunziger Jahre begrenzt, aber deutlich zugenommen hat. Die Konzepte der Arbeitsmarktsegmentation und der Betrieblichen Beschäftigungs-Sub-Systeme (BBSS) erlauben es, die makrostatistischen Analysen zu spezifizieren: Ein großer Teil der Veränderungen in der Arbeitsmarktstruktur erfolgt über endogene Modifikationen von Geschlossenen und Offenen BBSS als Bausteinen von Internen und Externen Arbeitsmärkten. Als Schlussfolgerung sprechen wir daher eher von dynamischer Segmentation als von einer Erosion Interner Arbeitsmärkte und einer Generalisierung von Beschäftigungsrisiken.
description: The article adresses the question of the erosion of internal labour markets and the generalisation of employment risks and precariousness in West and East Germany. Quantitative analyses of firm employment policies and tenure of individuals show a co-existence of long with short and medium term employment and a moderate but significant growth of the latter since the early nineties. The concepts of labour market segmentation and firm employment subsystems (FESS) allow to specify our macrostatistical findings: Most of the dynamics in labour market structures results from endogenous modifications of Closed and Open FESS as part of Internal and External Labour Markets. The conclusion is that we can speak of dynamic segmentation rather than of an erosion of Internal Labour markets and the generalisation of employment risks.
description: Arbeit