cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonzero $θ_{13}$ and Leptogenesis in a Type-I See-saw Model with $A_4$ Symmetry
Creators: name: Karmakar, Biswajit
name: Sil, Arunansu
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the light of recent discovery of nonzero $θ_{13}$, we have analyzed the Altarelli-Feruglio $A_4$ flavor symmetry model extended with additional flavon. The inclusion of the new field leads to the deviation from exact tri-bimaximal neutrino mixing pattern in the context of type-I see-saw by producing a nonzero $θ_{13}$ consistent with the recent experimental results at the leading order. A sum rule for light neutrino masses is also obtained in this context. The set-up constraints the two Majorana phases involved in the lepton mixing matrix in terms of $A_4$ parameter space. We have shown that a nonzero lepton asymmetry can be generated while next-to-leading order contributions to the neutrino Yukawa couplings are considered. The two Majorana phases play crucial role in CP-asymmetry parameter and the involvement of $θ_{13}$ in it, is exercised.
description: 29 pages, 11 figures, discussion added, version published in Phys. Rev. D
Gravitational Waves: A Test for Modified Gravity
Creators: name: Xu, Lixin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In a modified gravity theory, the propagation equation of gravitational waves will be presented in a non-standard way. Therefore this tenor mode perturbation of time-space, as a complement to the scalar mode perturbation, provides a unique character distinguishing modified gravity from general relativity. To avoid the model-dependent issue, in this paper, we propose a parametrised modification to the propagation of gravitational waves. We show the effects on the angular power spectrum of cosmic microwave background radiation due to the parametrised modification and its degeneracy to the tensor mode power spectrum index $n_t$ and its running $α_t$. At last, we report the current status on the detection of modified gravity through the currently available cosmic observations. Our results show no significant deviation to general relativity.
description: Accepted for publication in Phys. Rev. D
Anomalous optical bistability and robust entanglement of mechanical oscillators using two-photon coherence
Creators: name: Sete, Eyob A.
name: Eleuch, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum coherence is one of the most intriguing applications of quantum mechanics, and has led to interesting phenomena and uncommon results. Here we show that in a stark contrast to the usual red-detuned condition to observe bistability in single-mode optomechanics, the optical intensities exhibit bistability for all values of cavity-laser detuning due to intermode coupling induced by the two-photon coherence. Interestingly, an unconventional bistability with "ribbon"-shaped hysteresis can be observed for blue-detuned laser frequencies. We also demonstrate that the two-photon coherence leads to a strong entanglement between the movable mirrors in the adiabatic regime. Surprisingly, the mirror-mirror entanglement is shown to persist for environment temperature of the phonon bath up to 12 K using experimental parameters.
description: 13 pages, 9 figures; published version
The Rate of Non-Participation in Work in the Italian Regions  During the Period 2018-2022
Creators: name: Leogrande, Angelo
Publisher: name: Zenodo
Year: 2023

description: Istat calculates the value of the labor non-participation rate. The rate of non-participation in work is the ratio between the sum of "available" unemployed and inactive people (people who have not looked for work in the last 4 weeks but are available to work), and the sum of the labor force (set of employed and unemployed ) and inactive "available", referring to the population between 15 and 74 years. The data is available between 2018 and 2022 in the Italian regions and macro-regions.
Walking Through the Revolution: A Spatial Reading of Literary Echoes
Creators: name: Queiroz, Ana Isabel
name: Alves, Daniel
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: This paper presents an embryo of a literary guide on the Carnation Revolution to be explored for educational historical excursions other than leisure and tourism. We propose a historical trail through the centre of Lisbon, city of the Carnation Revolution, called Walk through the Revolution. The trail aims to reinforce collective memory about the major events that occurred in the early moments leading to the coup. The trail is made up by nine places of rememberance, for which literary excerpts are suggested and which are supported by a digital research procedure. A set of seven fixed and observer-independent categories are used to analyse the literary contents of 23 literary works published up to 2013. These literary works refer to events that happened between the eve of April 25 and May 1, 1974. At the same time, literary descriptions are explored using a spatial approach in order to define the literary geography of the most iconic military actions and popular demonstrations that occurred in Lisbon and the surroundings. The literary geography and the cartography of the historical events are then compared. Data analysis and visualization benefit from the use of standardised and quantitative methods, including basic statistics and geographic information systems.
description: JSSE - Journal of Social Science Education, 2-2015 Revolution and Memories
The Radiative Efficiency of a Radiatively Inefficient Accretion Flow
Creators: name: D'Angelo, C. R.
name: Fridriksson, J. K.
name: Messenger, C.
name: Patruno, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A recent joint XMM-Newton/Nuclear Spectroscopic Telescope Array (NuSTAR) observation of the accreting neutron star Cen X-4 ($L_{\rm X}\sim10^{33}{\rm~erg~s}^{-1}$) revealed a hard power-law component ($Γ\sim1$-$1.5$) with a relatively low cut-off energy (~10 keV), suggesting bremsstrahlung emission. The physical requirements for bremsstrahlung combined with other observed properties of Cen X-4 suggest the emission comes from a boundary layer rather than the accretion flow. The accretion flow itself is thus undetected (with an upper limit of $L_{\rm flow}\lesssim0.3 L_{\rm X}$). A deep search for coherent pulsations (which would indicate a strong magnetic field) places a 6 per cent upper limit on the fractional amplitude of pulsations, suggesting the flow is not magnetically regulated. Considering the expected energy balance between the accretion flow and the boundary layer for different values of the neutron star parameters (size, magnetic field, and spin) we use the upper limit on $L_{\rm flow}$ to set an upper limit of $\varepsilon\lesssim0.3$ for the intrinsic radiative efficiency of the accretion flow for the most likely model of a fast-spinning, non-magnetic neutron star. The non-detection of the accretion flow provides the first direct evidence that this flow is indeed 'radiatively inefficient', i.e. most of the gravitational potential energy lost by the flow before it hits the star is not emitted as radiation.
description: 15 pages, 3 figures - minor modifications to match published version
Discourses of Inclusion and Exclusion in the Commemoration of the 40th Anniversary of the Portuguese Revolution
Creators: name: Oliveira, Sandi Michele De
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: This article takes a discourse analytical approach to elements of the 40th commemoration of the Portuguese Revolution, focusing specifically on the absence of themes and participants by groups who were most directly involved in the Revolution, either as actors (the “Captains of Abril”), the retornados (Portuguese nationals “returning” to Portugal in the aftermath of the 1974 coup) and retornados-emigrantes (those who left Africa during this period but went on to live outside Portugal). The analyses center primarily on the speech by Portuguese President Cavaco Silva, given as the official opening of the 40th anniversary of the military coup of 25 April 1974, which brought the authoritarian regime of 48 years to an end. This examination, combined with other speeches of Cavaco Silva, newspaper reports, analyses of the integration of retornados, and a commemorative TV miniseries on the Revolution, provide the evidence for the argument that important voices of the Revolution were muted or silenced in the official commemoration of 2014. Finally, the relevance of actor-centered perspectives on commemoration is laid out for educators.
description: JSSE - Journal of Social Science Education, 2-2015 Revolution and Memories
title: Fortress Europe?
Creators: name: Schelischansky, Alexander
Year: 2022

description: Migration ist eines der bestimmenden Themen unserer Zeit. In der jüngeren Vergangenheit haben politische Akteure mit Hilfe von Migration immer wieder versucht Druck auf die Europäische Union und ihre Mitgliedsstaaten auszuüben. In dieser Arbeit wird, anhand zweier aktueller Fallbeispiele, die Anfälligkeit der Europäischen Union gegenüber dieser Form des politischen Zwangs untersucht. Dabei wird ein besonderes Augenmerk auf die Analyse der Strategien der Aggressoren, sowie die Gegenmaßnahmen der EU und ihrer Mitgliedsstaaten gelegt. Unter Berücksichtigung der gewonnenen Erkenntnisse, werden schließlich jene Faktoren aufgezeigt, die besonders zur Anfälligkeit der EU beitragen. Abschließend werden Ansätze vorgestellt, um die politische Widerstandsfähigkeit der Union gegen diese Form des Zwangs zu erhöhen.
description: Migration is one of the defining issues of our time. In the recent past, political actors have repeatedly tried to exert pressure on the European Union and its member states through migration. This paper examines, through two recent case studies, the susceptibility of the European Union to this form of political coercion. Special attention is paid to the analysis of the strategies of the aggressors, as well as the countermeasures of the EU and its member states. Finally, taking into account the lessons learned, those factors that particularly contribute to the susceptibility of the EU will be highlighted. Finally, approaches are presented to increase the political resilience of the Union against this form of coercion.
title: Understanding impacts of vocational education and training on youth employment in Sub-Saharan Africa and Morocco
Creators: name: Jia, Jiexi
Year: 2022

description: Berufliche Bildung und Ausbildung (VET) ist in den letzten Jahren zu einer Methode in der Entwicklungshilfe geworden, insbesondere in Gebieten, die mit Herausforderungen bei der Jugendbeschäftigung konfrontiert sind. Durch das Angebot branchenspezifischer Qualifizierung spielt die Berufsbildung eine wichtige Rolle auf dem Arbeitsmarkt und könnte eine wichtige Rolle beim Übergang von der Schule in den Beruf für Jugendliche spielen. Studien haben keinen Konsens über die Beziehung zwischen Berufsbildung und Beschäftigung erzielt. Empirische Beweise aus mehreren randomisierten kontrollierten Studien (RCTs) belegen jedoch einen positiven kausalen Zusammenhang mit unterschiedlichen Wirkungsschätzungen. Beispieldaten aus drei Projekten der Organisation der Vereinten Nationen für industrielle Entwicklung (UNIDO) zeigen einen positiven Einfluss der Schulungen auf die Indikatoren der Arbeitsmarktergebnisse der Teilnehmer. Durch den Vergleich von Einstellungen, Designs und Ergebnissen zwischen zwei ähnlichen RCTs und zwischen den UNIDO-Projekten, i) ein Kursdesign, das die Marktanforderungen widerspiegelt; ii) eine integrative Rekrutierung für gezielte Personen; und iii) ein robustes Bewertungssystem sind der Schlüssel zu einem effektiven Berufsbildungsprogramm.
description: Vocational education and training (VET) has in recent years become a method in development assistance, especially towards regions facing youth employment challenges. Through offering sector-specific skills training, VET plays a vital role at the labor market, and could play an important role in school to work transition for youths. Studies have failed to reach consen-sus concerning the relation between VET and employment. However, em-pirical evidence from several randomized controlled trials (RCTs) proves a positive causal relation, with varied impact estimates. Sample data from three of the United Nations Industrial Development Organization(UNIDO) projects shows a positive impact the trainings had on indicators of partici-pants’ labor market outcome. By comparing settings, designs and results between two similar RCTs and among the UNIDO projects, i) a course de-sign reflective of market demands; ii) an inclusive recruitment for targeted individuals; and iii) a robust evaluation system are key for an effective VET program.
Knowledge and the Experience of Women Living Underground During the Portuguese Dictatorship
Creators: name: Nogueira, Cristina Marques
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: This paper assumes that formative processes are not limited to the school context or model but that other life contexts and experiences, even if not intentionally, have educational effects. These informal formative contexts and experiences can play a key role individual´s development, resulting not only in superficial changes, but also in deep changes in terms of subjectivity and identity. Our research involves clandestine militants of the Portuguese Communist Party during the dictatorship, and explores the type of knowledge acquired during their hiding experience (1940-1974) that allowed them to resist and survive over long periods. As our focus is the experience of women, based on narrative discourses of women (or about them) we will consider the role and status of women in hiding. The discourses were collected through several published autobiographical narratives and mainly interviews where we tried to identify the learning processes, the people seen as significant for knowledge acquisition, and also how knowing, knowing how to do and knowing how to be were constructed during living in hiding.
description: JSSE - Journal of Social Science Education, 2-2015 Revolution and Memories
Estimating the sensitivity of pulsar timing arrays
Creators: name: Moore, Christopher J.
name: Taylor, Stephen R.
name: Gair, Jonathan R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The sensitivity curve of a canonical pulsar timing array is calculated for two types of source: a monochromatic wave and a stochastic background. These calculations are performed in both a Bayesian and frequentist framework, using both analytical and numerical methods. These calculations are used to clarify the interpretation of the sensitivity curves and to illustrate the sometimes overlooked fact that the sensitivity curve depends not only on the properties of the pulse time-of-arrival data set but also on the properties of the source being observed. The Bayesian and frequentist frameworks were found to give consistent results and the analytic and numerical calculations were also found to be in good agreement.
description: 19 pages, 4 figures; version 2 corrects typo in Eq 16
title: Projektorientierter DaF-Unterricht als Ansatz berufsorientierten Lernens in der italienischen Sekundarstufe II
Creators: name: Speroni, Laura
Year: 2022

description: In dieser Masterarbeit wird der berufsbezogene DaF-Projektunterricht im Kontext der italienischen Sekundarstufe II untersucht. Es wird erforscht, ob und inwiefern der projektbasierte DaF-Unterricht mit berufsbezogenen Anteilen im Hinblick auf die Entwicklung von berufsrelevanten Kompetenzen der Schüler*innen ein didaktisches Potenzial bergen kann, und in welchem Maß dieses Konzept als Brücke zwischen Schule und die Arbeitswelt fungieren kann und somit die Bewältigung des Übergangs Schule-Beruf unterstützt. Exemplarisch wird als Untersuchungsgegenstand der empirischen Arbeit das vom Goethe-Institut entwickelte Schulprojekt Unternehmen Deutsch - Piazza Affari Tedesco herangezogen. Zielgruppe der Untersuchung sind Lehrer*innen, die an diesem Projekt teilgenommen haben, die aus ihren Beobachtungsposten einen Überblick über das Potenzial dieses Projektes geben können und darüber hinaus Einblicke in aktuellen Tendenzen, Bedürfnisse und Schwierigkeiten der Jugendlichen gewähren können. Mithilfe qualitativer Interviews werden zunächst die relevanten Kompetenzen, die am Beispiel des Projekts bei den Schüler*innen besonders gefördert werden können, analysiert. Als zweiter Schritt wird das Projekt unter dem Gesichtspunkt seines Potenzials im Rahmen der Bewältigung des Übergangs Schule-Beruf untersucht. Durch die empirisch erhobenen Daten zeigt sich, dass besonders allgemein- und berufssprachliche Kompetenzen, Soft-Skills und interdisziplinäre und digitale Kompetenzen im Rahmen des Projekts gestärkt werden, während in Bezug auf den Übergang Schule-Beruf eine praktische Annäherung an die Berufswelt gewährleistet wird. Die Stärkung und Förderung solcher Projekte und die Implementierung von schulischen Lernpartnerschaften mit der Arbeitswelt ist weiterhin notwendig, um die Bildungsziele der heutigen italienischen Schule erreichen zu können.
Boletin CEAZAMar - Abril 2022 (2022). Análisis de las Condiciones Atmosféricas y Oceanográficas de la Región de Coquimbo (Diciembre 2021 - Febrero 2022)
Creators: name: CEAZAMar, CEAZA
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 370801
subject: Biological oceanography
classificationCode: 370803
subject: Physical oceanography
classificationCode: 370802
subject: Chemical oceanography

description: EL Boletín CEAZAMar surge del quehacer científico desarrollado en el borde costero y del océano de la Región de Coquimbo por el Centro de Estudios Avanzados en Zonas Áridas (CEAZA).
 Este boletín busca constituirse como una herramienta de orientación y consulta para las múltiples actividades productivas y no-productivas que tienen lugar en las costas de la Región de Coquimbo.
 Para tal efecto, el Boletín proveerá información de variables del sistema atmosférico y oceanográfico que resultan clave para la planificación de las actividades en el mar, con el fin de mejorar la toma de decisiones de los usuarios, y aportar a la capacidad adaptativa de las comunidades costeras frente a la variabilidad ambiental y climática.
 A través de información satelital y de equipos de monitoreo desplegados a lo largo de la costa de la Región, este Boletín provee información relativa al viento, Temperatura Superficial del Mar (TSM), nivel del mar, entre otras, las cuales se relacionan con el estado del mar y la ocurrencia de surgencia costera (viento), productividad (concentración de clorofila), y presencia o ausencia de distintas facetas de El Niño.
 Este análisis atmosférico y oceanográfico trata de representar la heterogeneidad espacial y temporal de las condiciones hidrográficas costeras que alberga la Región de Coquimbo. Esto a través del uso de mapas y series de tiempo y análisis trimestrales de dichas variables ambientales, para múltiples localidades de la Región, tales como Chañaral de Aceituno, Punta de Choros, Bahía de Coquimbo, Bahía de Tongoy, Punta Lengua de Vaca, La Cebada, Huentelauquén y Los Vilos.
 Finalmente, se vincula el diagnóstico de las condiciones atmosféricas y oceanográficas de la Región de Coquimbo con los indicadores de productividad acuícola disponibles para el periodo de interés.
Medium-induced gluon radiation and colour decoherence beyond the soft approximation
Creators: name: Apolinário, Liliana
name: Armesto, Néstor
name: Milhano, José Guilherme
name: Salgado, Carlos A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We derive the in-medium gluon radiation spectrum off a quark within the path integral formalism at finite energies, including all next-to-eikonal corrections in the propagators of quarks and gluons. Results are computed for finite formation times, including interference with vacuum amplitudes. By rewriting the medium averages in a convenient manner we present the spectrum in terms of dipole cross sections and a colour decoherence parameter with the same physical origin as that found in previous studies of the antenna radiation. This factorisation allows us to present a simple physical picture of the medium-induced radiation for any value of the formation time, that is of interest for a probabilistic implementation of the modified parton shower. Known results are recovered for the particular cases of soft radiation and eikonal quark and for the case of a very long medium, with length much larger than the average formation times for medium-induced radiation. Technical details of the computation of the relevant $n$-point functions in colour space and of the required path integrals in transverse space are provided. The final result completes the calculation of all finite energy corrections for the radiation off a quark in a QCD medium that exist in the small angle approximation and for a recoilless medium.
description: v2: mistake in Dirac algebra corrected, corresponding conclusion changed accordingly, BDMPS limit added. Accepted by JHEP
Social and Psycho-political Impacts in the Social Construction of Political Memory of the Brazilian Military Dictatorship
Creators: name: Ansara, Soraia
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: This article refers to a research on the political memory of the military dictatorship in Brazil, held in three Brazilian cities (Belo Horizonte, Curitiba and São Paulo) in which we analyzed the social and psychopolitical impacts caused by the dictatorship as well as the redemocratization process in building the political memory of community and union leaders. The study revealed two important legacies that were found in the reports of interviewees: the first one refers to police repression, impunity, and authoritarianism still present in Brazilian society; the second legacy refers to the existence of a political memory built by social movements and communities that care about passing on, to the new generations, the events that occurred during the military dictatorship. Research has clearly shown that there is no single memory but several "underground memories" (Pollak, 1989), built by the popular classes, which contradict the versions disseminated by the official memory and enhance the social movements capacity of action as a strategy of resistance and political struggle of the movements today. To the extent that this fight is assumed by other spheres of Brazilian society it may contribute to memory policies in the fight against forgetting.
description: JSSE - Journal of Social Science Education, 2-2015 Revolution and Memories
title: AI3SD Project: Active learning for cost-efficient reaction prediction using kinetic data
Creators: name: Dingwall, Paul
Publisher: name: University of Southampton
Year: 2021
Subjects: AI3SD, Report, Reaction Prediction, Kinetic Data, AI, Artificial intelligence, Kinetics, Homogeneous Catalysis, Active Learning

description: Predicting an optimal set of conditions for a given reaction is a challenging task. This becomes even more challenging when also trying to predict the performance of a reaction, such as the final yield of product or how long it will take. Existing approaches to this problem use machine learning algorithms that are fed a large volume of single timepoint yield data (the amount of product generated after a set time). Using this data is problematic; if a reaction only reached 50% would it reach 99% if run for longer? How much longer? Was there a slow catalysts activation period followed by a rapid reaction? Or was a catalyst poisoned, stopping the reaction midway? These are factors described by the reaction kinetics. We propose that using reaction kinetic data will lead to better predictive models. However, collecting kinetic data is significantly more costly and time consuming than collecting single timepoint yields. To minimise these issues, we will be using a cutting-edge machine learning technique called active learning. Rather than performing every possible reaction combination to build our model, active learning first picks the most important set of conditions. The user collects this data, and the
active learning process is updated and begun again, resulting in a highly cost-efficient procedure minimising experimental requirements.
Women’s Experiences: Memories of Portuguese Revolution
Creators: name: Dantas-Ferreira, Sónia
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: In this article I attempt to analyze the social memories of wives of soldiers in service on April 25th 1974, through the methodology of analysis recommended by Adele Clarke (2005), using data collected in 11 interviews conducted between 2005 and 2008 under a PhD project. As a conceptual framework I adopt the perspective of social memory in the tradition of Halbwachs (1992) and following Marc Augé (2001) and Paul Ricoeur (2004), which emphasizes the social and collective memory and points out the dynamic role it plays in building a meaning to the world. This analysis takes into account the dimensions of work, family, education, politics and social life, social and economic conditions and the expectations and dreams on which the interviewees draw comparisons between 1974 and the present and also produce judgments.
description: JSSE - Journal of Social Science Education, 2-2015 Revolution and Memories
title: Market entry of international project companies into the Mexican photovoltaic sector
Creators: name: Hildebrandt, Maximilian
Year: 2022

description: Der Klimawandel ist ein ernstes Problem, dem aktiv entgegengewirkt werden muss. Eine Möglichkeit ist eine weltweite Förderung von erneuerbaren Energien, wie z.B Solarenergie, um die schädlichen CO2-Emissionen zu reduzieren. Die vorliegende Masterarbeit untersucht das Potenzial Mexikos und seiner Photovoltaik-Industrie als Markteintrittsmarkt für deutsche Projektunternehmen, um Photovoltaik in diesem Schwellenland zu fördern. Hierbei werden insbesondere zwei Forschungsfragen genauer beleuchtet: Die Chancen und Risiken von deutschen Projektunternehmen im mexikanischen Photovoltaik-Markt sowie welche internen Ressourcen hilfreich sind, um diese Chancen zu realisieren bzw. Risiken zu minimieren. Hierfür wurden mithilfe des PESTEL Frameworks und Porters Five Forces das Makroumfeld und die Photovoltaik-Industrie analysiert. Abschließend wurden zwei Experteninterviews mit etablierten deutschen Unternehmen in Mexiko geführt und in die Fallstudie integriert, um einen empirischen Einblick zu dem Makroumfeld, der Industrie, aber auch notwendiger Ressourcen für einen erfolgreichen Markteinstieg, zu bekommen. Dieser qualitative Fallstudienansatz kommt zu dem Ergebnis, dass Mexiko aufgrund seiner geografischen Vielfalt ein attraktiver Markt ist und viele Möglichkeiten bietet, um Solarenergie zu verbreiten. Aufgrund kultureller, technologischer und politischer Gründe bleibt das Land jedoch ein kompliziertes Fallbeispiel für die Einführung der Solarenergie in Schwellenländern.
description: Climate change is a serious problem that must be actively addressed. One option is to promote renewable energy worldwide, such as solar power, to reduce harmful CO2 emissions. This Master's thesis examines the potential of Mexico and its solar industry as an entry point for German project companies to promote photovoltaics energy in this emerging country. In particular, two research questions are explored: the opportunities and risks that German project companies face in the Mexican solar PV market, and what internal resources are useful to exploit these opportunities or minimize the risks. To this end, the macro-environment and the solar PV industry were analyzed using the PESTEL framework and Porter's five forces. Finally, two expert interviews with German companies established in Mexico were integrated into the case study to gain empirical insights into the macro-environment, the industry, but also the resources needed for successful market entry. This qualitative case study approach concludes that Mexico is an attractive market due to its geographical diversity and offers many opportunities for solar energy deployment. However, due to cultural, technological, and political reasons, the country remains a complicated case study for solar energy deployment in emerging markets.
What to Change – How to Have Influence? Children’s Ideas About Exercising Power and Participating
Creators: name: Virta, Arja
name: Virta, Marjaana
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: Interest in children’s voice in society has been increasing gradually. This implies both the creation of new channels for participation, and also in the intensification of the research on children’s citizenship. This article asks what ideas twelve-year-old children have about using power and about their own opportunities of having influence in their schools. The study is based on qualitative questionnaires, in which the respondents were asked questions about how they would use power to make improvements in different spheres, starting from their classroom and ending up to the world. The questionnaire also asked about their experience of agency in schools. According to the responses, the children’s suggestions for changes were focused on the physical environment. As to their class and school, it was the informal level of the school that was important. In the global level, the children wished that the world would be safe. As to their agency in school, they mainly depended on adults who organize students’ participation.
description: JSSE - Journal of Social Science Education, 2-2015 Revolution and Memories
Pollinator communities and dye dispersal data of two genetic lineages of Silene nutans in southern Belgium
Creators: name: Cornet, Camille
name: Nausicaa Noret
name: Van Rossum, Fabienne
Publisher: name: Zenodo
Year: 2020
Subjects: facilitation
fluorescent dye
nocturnal moths
nursery pollinators
pollen dispersal
reproductive isolation
seed predator
Silene nutans

description: Video recordingd of nocturnal pollinators, data on abundance of seed predators (including nursery pollinators) and dispersal patterns of fluorescent powdered dyes mimicking pollen dispersal, for 8 populations (4 populations of each of the 2 edaphic ecotypes) of Silene nutans in southern Belgium (Viroin and Ourthe valleys). Data collected in 2019 and 2020. See Cornet et al. (2022) in Frontiers in Plant Science for more details.
Boletin CEAZAMar - Abril 2022 (2022). Análisis de las Condiciones Atmosféricas y Oceanográficas de la Región de Coquimbo (Diciembre 2021 - Febrero 2022)
Creators: name: CEAZAMar, CEAZA
Publisher: name: figshare
Year: 2022
Subjects: classificationCode: 370899
subject: Oceanography not elsewhere classified

description: EL Boletín CEAZAMar surge del quehacer científico desarrollado en el borde costero y del océano de la Región de Coquimbo por el Centro de Estudios Avanzados en Zonas Áridas (CEAZA).
 Este boletín busca constituirse como una herramienta de orientación y consulta para las múltiples actividades productivas y no-productivas que tienen lugar en las costas de la Región de Coquimbo.
 Para tal efecto, el Boletín proveerá información de variables del sistema atmosférico y oceanográfico que resultan clave para la planificación de las actividades en el mar, con el fin de mejorar la toma de decisiones de los usuarios, y aportar a la capacidad adaptativa de las comunidades costeras frente a la variabilidad ambiental y climática.
 A través de información satelital y de equipos de monitoreo desplegados a lo largo de la costa de la Región, este Boletín provee información relativa al viento, Temperatura Superficial del Mar (TSM), nivel del mar, entre otras, las cuales se relacionan con el estado del mar y la ocurrencia de surgencia costera (viento), productividad (concentración de clorofila), y presencia o ausencia de distintas facetas de El Niño.
 Este análisis atmosférico y oceanográfico trata de representar la heterogeneidad espacial y temporal de las condiciones hidrográficas costeras que alberga la Región de Coquimbo. Esto a través del uso de mapas y series de tiempo y análisis trimestrales de dichas variables ambientales, para múltiples localidades de la Región, tales como Chañaral de Aceituno, Punta de Choros, Bahía de Coquimbo, Bahía de Tongoy, Punta Lengua de Vaca, La Cebada, Huentelauquén y Los Vilos.
 Finalmente, se vincula el diagnóstico de las condiciones atmosféricas y oceanográficas de la Región de Coquimbo con los indicadores de productividad acuícola disponibles para el periodo de interés.
Review of the Book: Ross, Alistair (2015). Understanding the Constructions of Identities by Young New Europeans: Kaleidoscopic selves. New York/ Abingdon: Routledge, 217 pp.
Creators: name: Pamuk, Akif
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: JSSE - Journal of Social Science Education, 2-2015 Revolution and Memories
Bloch-Landau-Zener dynamics in single-particle Wannier-Zeeman systems
Creators: name: Ke, Yongguan
name: Qin, Xizhou
name: Zhong, Honghua
name: Huang, Jiahao
name: He, Chunshan
name: Lee, Chaohong
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Stimulated by the experimental realization of spin-dependent tunneling via gradient magnetic field [Phys. Rev. Lett. 111, 225301 (2013); Phys. Rev. Lett. 111, 185301 (2013)], we investigate dynamics of Bloch oscillations and Landau-Zener tunneling of single spin-half particles in a periodic potential under the influence of a spin-dependent constant force. In analogy to the Wannier-Stark system, we call our system as the Wannier-Zeeman system. If there is no coupling between the two spin states, the system can be described by two crossing Wannier-Stark ladders with opposite tilts. The spatial crossing between two Wannier-Stark ladders becomes a spatial anti-crossing if the two spin states are coupled by external fields. For a wave-packet away from the spatial anti-crossing, due to the spin-dependent constant force, it will undergo spatial Landau-Zener transitions assisted by the intrinsic intra-band Bloch oscillations, which we call the Bloch-Landau-Zener dynamics. If the inter-spin coupling is sufficiently strong, the system undergoes adiabatic Bloch-Landau-Zener dynamics, in which the spin dynamics follows the local dressed states. Otherwise, for non-strong inter-spin couplings, the system undergoes non-adiabatic Bloch-Landau-Zener dynamics.
description: 13 pages, 10 figures, accepted for publication in Phys. Rev. A
Education for National Belonging: Imposing Borders and Boundaries on Citizenship with Difference
Creators: name: Gordon, Daryl
name: Long, Jennifer
name: Fellin, Melissa
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: .
description: JSSE - Journal of Social Science Education, 3-2015 Education for National Belonging: Imposing Borders and Boundaries on Citizenship
Cluster algebras of infinite rank as colimits
Creators: name: Gratz, Sira
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We formalize the way in which one can think about cluster algebras of infinite rank by showing that every rooted cluster algebra of infinite rank can be written as a colimit of rooted cluster algebras of finite rank. Relying on the proof of the posivity conjecture for skew-symmetric cluster algebras (of finite rank) by Lee and Schiffler, it follows as a direct consequence that the positivity conjecture holds for cluster algebras of infinite rank. Furthermore, we give a sufficient and necessary condition for a ring homomorphism between cluster algebras to give rise to a rooted cluster morphism without specializations. Assem, Dupont and Schiffler proposed the problem of a classification of ideal rooted cluster morphisms. We provide a partial solution by showing that every rooted cluster morphism without specializations is ideal, but in general rooted cluster morphisms are not ideal.
description: Included cluster algebras of uncountable rank, fixed some typos. Results on the countable case unchanged, comments appreciated
Brokering Identity and Learning Citizenship: Immigration Settlement Organizations and New Chinese Immigrants in Canada
Creators: name: Zhu, Yidan
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: This paper examines citizenship learning and identity construction of new Chinese immigrants in a Canadian immigration settlement organization (ISO). I address the gap between the concept of “settlement” and “citizenship” generated by government-funded ISOs and new immigrants’ actual practices in these programs. I adopt Dorothy Smith’s approach of examining the social organization of people’s everyday lives (Smith 2005) in order to unpack the ruling relations behind the immigrant settlement services and to take the standpoint of Chinese new immigrants. Under this framework, I analyze a Canadian federal government’s funding criteria for ISOs and a settlement program’s annual report to unpack the ruling relations behind the texts. I further conduct in-depth interviews with two Chinese new immigrants in a Canadian ISO to understand the ruling relations behind citizenship learning and brokering activities in Canadian ISOs from the immigrants’ standpoint.
description: JSSE - Journal of Social Science Education, 3-2015 Education for National Belonging: Imposing Borders and Boundaries on Citizenship
An extension of cosmological dynamics with York time
Creators: name: Roser, Philipp
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been suggested that the York parameter $T$ (effectively the scalar extrinsic curvature of a spatial hypersurface) may play the role of a fundamental time parameter. In a flat, forever expanding cosmology the York parameter remains always negative, taking values $T=-\infty$ at the big bang and approaching some finite non-positive value as $t\rightarrow\infty$, $t$ being the usual cosmological time coordinate. Based on previous results concerning a simple, spatially flat cosmological model with a scalar field, we provide a temporal extension of this model to include `times' $T>0$, an epoch not covered by the cosmological time coordinate $t$, and discuss the dynamics of this `other side' and its significance. We argue that the extension is necessary if a consistent quantisation scheme is to exist. Furthermore, we investigate which types of potentials lead to smooth transitions, paying particular attention to currently favoured inflaton potentials.
description: Major revisions and extensions since v.1, 18 pages, 3 figures, 1 table
Saturation and elementary equivalence of C*-algebras
Creators: name: Eagle, Christopher J.
name: Vignati, Alessandro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Logic (math.LO)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: We study the saturation properties of several classes of $C^*$-algebras. Saturation has been shown by Farah and Hart to unify the proofs of several properties of coronas of $σ$-unital $C^*$-algebras; we extend their results by showing that some coronas of non-$σ$-unital $C^*$-algebras are countably degree-$1$ saturated. We then relate saturation of the abelian $C^*$-algebra $C(X)$, where $X$ is $0$-dimensional, to topological properties of $X$, particularly the saturation of $CL(X)$.
description: 36 pages. Version 4 is rewritten for clarity in several places
title: "so habe ich noch nie darüber nachgedacht"
Creators: name: Schmidl, Lina
Year: 2022

description: In einer Interviewstudie mit 13 Schüler*innen der 8. Schulstufe werden ihre Spracheinstellungsäußerungen und Positionierungen zu Mehrsprachigkeit in der Schule erhoben und Möglichkeiten sowie Grenzen eines mehrsprachigkeitssensiblen Unterrichts und mehrsprachiger Identitäten reflektiert und aufgezeigt.
Science and Social Studies Teachers’ Beliefs and Practices about Teaching Controversial Issues: Certain Comparisons
Creators: name: Kuş, Zafer
Publisher: name: JSSE - Journal of Social Science Education
Year: 2015

description: The current study aims to investigate social studies and science teachers’ attitudes and classroom practices associated with controversial issues. The study is a qualitative research based on data collected through interviews and observation. Social studies and Science teachers participated in the current study which was conducted in Kirsehir, a city in the center of Turkey, during the 2012-2013 academic years. Data were collected through classroom observation and interviews with teachers. In this study, teachers' positioning during controversial issues are determined by Kelly's (1986) positioning classification: Exclusive Neutrality, Exclusive Partiality, Neutral Impartiality, and Committed Impartiality. According to results of the research, violence against women, education system, terrorism and nationalism are the leading issues among the controversial issues that both social studies and science teachers listed in Turkey. In relation to their area, social studies teachers stated that the issues such as Kemalism, democracy, military coups, and deep state, which are associated with recent history of Turkey, were among the important controversial issues. Science teachers on the other hand stated issues such as cancer and anti-toxic foods and global warming among the controversial issues in Turkey. Both social studies and science teachers stated that the most frequently encountered problem in discussions was lack of knowledge by students. Whereas social studies teachers stated that their priority goals were particularly to raise active citizens and to set up a democratic classroom environment, science teachers pointed to raising scientifically thinking students and increasing students’ knowledge as their priority goals. During in-class discussions teachers take some positions. The positions stated by the teachers and in-class observations of them conflict. Whereas the teachers stated that they prefer the 4th and 3rd positions, the in-class observations showed that they mainly adopted the 2nd position. Results of observations in social studies classes show that teachers definitely stated their positions about the discussed issue as a priority; they tried to teach the students their positions about the issue; and occasionally about some issues, they told just their positions.
description: JSSE - Journal of Social Science Education, 3-2015 Education for National Belonging: Imposing Borders and Boundaries on Citizenship
Boletin CEAZAMar - Enero 2022 (2022). Análisis de las Condiciones Atmosféricas y Oceanográficas de la Región de Coquimbo (Septiembre 2021 - Noviembre 2021)
Creators: name: CEAZAMar, CEAZA
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 370801
subject: Biological oceanography
classificationCode: 370803
subject: Physical oceanography
classificationCode: 370802
subject: Chemical oceanography

description: EL Boletín CEAZAMar surge del quehacer científico desarrollado en el borde costero y del océano de la Región de Coquimbo por el Centro de Estudios Avanzados en Zonas Áridas (CEAZA).

Este boletín busca constituirse como una herramienta de orientación y consulta para las múltiples actividades productivas y no-productivas que tienen lugar en las costas de la Región de Coquimbo.
Para tal efecto, el Boletín proveerá información de variables del sistema atmosférico y oceanográfico que resultan clave para la planificación de las actividades en el mar, con el fin de mejorar la toma de decisiones de los usuarios, y aportar a la capacidad adaptativa de las comunidades costeras frente a la variabilidad ambiental y climática.
A través de información satelital y de equipos de monitoreo desplegados a lo largo de la costa de la Región, este Boletín provee información relativa al viento, Temperatura Superficial del Mar (TSM), nivel del mar, entre otras, las cuales se relacionan con el estado del mar y la ocurrencia de surgencia costera (viento), productividad (concentración de clorofila), y presencia o ausencia de distintas facetas de El Niño.
Este análisis atmosférico y oceanográfico trata de representar la heterogeneidad espacial y temporal de las condiciones hidrográficas costeras que alberga la Región de Coquimbo. Esto a través del uso de mapas y series de tiempo y análisis trimes- trales de dichas variables ambientales, para múltiples localidades de la Región, tales como Chañaral de Aceituno, Punta de Choros, Bahía de Coquimbo, Bahía de Tongoy, Punta Lengua de Vaca, La Cebada, Huentelauquén y Los Vilos.
An Open-Source Research Platform for Embedded Visible Light Networking
Creators: name: Wang, Qing
name: Giustiniano, Domenico
name: Puccinelli, Daniele
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Despite the growing interest in Visible Light Communication (VLC), a reference networking platform based on commercial off-the-shelf components is not available yet. An open-source platform would lower the barriers to entry to VLC network research and help the VLC community gain momentum. We introduce OpenVLC, an open-source VLC research platform based on software-defined implementation. Built around a credit-card-sized embedded Linux platform with a simple opto-electronic transceiver front-end, OpenVLC offers a basic physical layer, a set of essential medium access primitives, as well as interoperability with Internet protocols. We investigate the performance of OpenVLC and show examples of how it can be used along with standard network diagnostics tools. Our software-defined implementation can currently reach throughput in the order of the basic rate of IEEE 802.15.7 standard. We discuss several techniques that researchers and engineers could introduce to improve the performance of OpenVLC and envision several directions that can benefit from OpenVLC by adopting it as a reference platform.
description: 7 pages, 5 figures; Published by the IEEE Wireless Communications Special Issue on Visible Light Communications (2015)