cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Cerebral Pilocytic Astrocytoma with Spontaneous Hemorrhage: an unusual presentation.
Creators: name: Alonso, Maitane
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Haemorrhage
subject: Acute
subject: Diagnostic procedure
subject: MR
subject: Neuroradiology brain
subject: Emergency
subject: CNS

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Our purpose is to illustrate and describe the radiological appearance of hypothalamic/chiasmatic pilocytic astrocytoma in adult population, describing typical and atypical imaging findings with computed tomography (CT) and magnetic resonance imaging...
$B\to K η^{(\prime)} γ$ decays in the standard model and in scenarios with universal extra dimensions
Creators: name: Biancofiore, Pietro
name: Colangelo, Pietro
name: De Fazio, Fulvia
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the radiative $B \to K η^{(\prime)} γ$ decays, which are important to investigate CP violation, and are also relevant to assess the role of the exclusive modes induced by the $b \to s γ$ transition to saturate the inclusive $B \to X_s γ$ decay rate. Moreover, these channels do not display the same hierarchy as $B \to K η^{(\prime)}$ modes, for which the decay into $η^\prime$ is enhanced with respect to one into $η$. The three-body radiative decays reverse the role: we find that this experimentally observed behavior (although affected by a large uncertainty in the case of the $η^\prime$) is reproduced in the theoretical analysis. We compute a $B^* \to K$ form factor, needed for this study, using light cone QCD sum rules, and discuss a relation expected to hold in the large energy limit for the light meson. Finally, we examine $B\to K ηγ$ in two extensions of the standard model with universal extra dimensions, to investigate the sensitivity of this rare mode to such a kind of new physics effects.
description: RevTeX, 17 pages, 7 figures. High resolution figures available upon request. Matches the published version
title: Is ultrasound helpful in the screening of patients at high risk for developmental dysplasia of the hip? A prevalence study on patients with negative Ortolani’s test
Creators: name: Bondini, Federica
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Dysplasias
subject: Developmental disease
subject: Screening
subject: Diagnostic procedure
subject: Ultrasound
subject: Paediatric
subject: Musculoskeletal joint

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Background: Developmental dysplasia of the hip (DDH) includes a wide spectrum of hip disorders, from initial deficit of maturation (IDM) to severe dysplasia (SD). Hip instability occurs clinically in 1-2% of newborns and up to 15% present imaging...
Oratio secularis de iubilaeis ecclesiae Iudaico, Christiano, Pontificio, Reformato
Creators: name: Reutlinger, Johann Jakob
Publisher: name: typis Gessnerianis
Year: 1719

description: Titelvignette
description: quâ iubilaei veri autore & praecone, Christo benignè adspirante secularibus sacris in honorem Dei ter opt. max. in secundo ecclesiae Tigurinae iubilaeo celebratis d. 7. Iduum Ianuarii an. MCCXIX in almo Tigurinorum Athenaeo colophonem imposuit Ioh. Iacobus Reutlingerus, Scholae Carolinae Moderator
The J-flow on Kahler surfaces: a boundary case
Creators: name: Fang, Hao
name: Lai, Mijia
name: Song, Jian
name: Weinkove, Ben
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We study the J-flow on Kahler surfaces when the Kahler class lies on the boundary of the open cone for which global smooth convergence holds, and satisfies a nonnegativity condition. We obtain a C^0 estimate and show that the J-flow converges smoothly to a singular Kahler metric away from a finite number of curves of negative self-intersection on the surface. We discuss an application to the Mabuchi energy functional on Kahler surfaces with ample canonical bundle.
description: 12 pages, final version to appear in Analysis & PDE
Additional file 1 of Comparative analysis on lung transcriptome of Mycoplasma ovipneumoniae (Mo) - infected Bashbay sheep and argali hybrid sheep
Creators: name: Li, Zengqiang
name: Du, Zhihui
name: Li, Jie
name: Sun, Yanming
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. The top upregulated genes (Sample_4d_Z-vs-Sample_4d_B). Table S2. The top downregulated genes (Sample_4d_Z-vs-Sample_4d_B). Table S3. The top upregulated genes (Sample_Z_14d-vs-Sample_B_14d). Table S4. The top downregulated genes (Sample_Z_14d-vs-Sample_B_14d).
title: Der Heizenergiebedarf wird wieder steigen, wenn der Preisdruck nachlässt: Interview
Creators: name: Küçük, Merve
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2023

description: DIW Wochenbericht, 90 (2023), 39, S. 540
title: 1 year transesopahageal echocardiography and computed tomography follow-up after totally videothoracoscopic left atrial appendage exclusion with AtriClip II Pro
Creators: name: Centonze, Maurizio
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cardiac
subject: Interventional vascular
subject: CT
subject: Ultrasound
subject: Surgery

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia with a prevalence of 1–2% in the general population [1].AF is related to risk of stroke, with main role played by the left atrial appendage (LAA), as 95% of thrombi in...
Gauge Issues in Extended Gravity and f(R) Cosmology
Creators: name: Brown, Iain A.
name: Hammami, Amir
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider issues related to the conformal mapping between the Einstein and Jordan frames in f(R) cosmology. We consider the impact of the conformal transformation on the gauge of a perturbed system and show that unless the system is written in a restricted set of gauges the mapping could produce an inconsistent result in the target frame. Newtonian gauge lies within the restricted group but synchronous gauge does not. If this is not treated carefully it could in principle contaminate numerical calculations.
description: 12 pages, REVTeX4. Replaced with version accepted by JCAP. Citations added and some clarifications
Ad Carolum Romanorum imperatorem Germaniae comitia Augustae celebrantem fidei Huldrychi Zvinglij ratio
Creators: name: Zwingli, Huldrych
Publisher: name: [apud Christophorum Froschouer]
Year: 1530

description: Sign.: A-E⁴. - Titelholzschnitt
description: Zitiertitel: Ad Carolum Romanorum imperatorem fidei ratio
Photon location in spacetime
Creators: name: Hawton, Margaret
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The NewtonWigner basis of orthonormal localized states is generalized to orthonormal and relativistic biorthonormal bases on an arbitrary hyperplane in spacetime. This covariant formalism is applied to the measurement of photon location using a hypothetical 3D array with pixels throughout space turned on at a fixed time and a timelike 2D photon counting array detector with good time resolution. A moving observer will see these detector arrays as rotated in spacetime but the spacelike and timelike experiments remain distinct.
description: Equations (18) to (21) and the relevant text deleted due to an error in (20). This is no effect on the conclusions of the paper
A sharp 141 GeV Higgs prediction from environmental selection
Creators: name: Unwin, James
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct an environmentally selected supersymmetric standard model with a single Higgs doublet, in analogy with the work of Hall and Nomura. The low energy spectrum presents only the standard model states with a single Higgs and TeV scale gauginos. The model features a precise Higgs mass prediction m_H=141\pm 2 GeV and the neutral wino provides a viable dark matter candidate.
description: 7 pages, 2 figures, 2 tables. v2: Minor corrections and amendments, references added
title: Scalp and skull vault imaging: why do you look but do not see?
Creators: name: Raimundo, Enrique
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Normal variants
subject: Image compression
subject: Education
subject: MR
subject: Digital radiography
subject: CT
subject: Soft tissues / Skin
subject: Neuroradiology brain
subject: Head and neck

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To demonstrate the multiple skull vault and scalp lesions, including anatomical variants, congenital, traumatic, inflammatory, neoplastic and miscellaneous changes. To describe the radiological pattern. To gather this information, which is scattered...
Improved Thermoelectric Cooling Based on the Thomson Effect
Creators: name: Snyder, G. Jeffrey
name: Khanna, Raghav
name: Toberer, Eric S.
name: Heinz, Nicholas A.
name: Seifert, Wolfgang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Traditional thermoelectric Peltier coolers exhibit a cooling limit which is primarily determined by the figure of merit, zT. Rather than a fundamental thermodynamic limit, this bound can be traced to the difficulty of maintaining thermoelectric compatibility. Self-compatibility locally maximizes the cooler's coefficient of performance for a given zT and can be achieved by adjusting the relative ratio of the thermoelectric transport properties that make up zT. In this study, we investigate the theoretical performance of thermoelectric coolers that maintain self-compatibility across the device. We find such a device behaves very differently from a Peltier cooler, and term self-compatible coolers "Thomson coolers" when the Fourier heat divergence is dominated by the Thomson, as opposed to the Joule, term. A Thomson cooler requires an exponentially rising Seebeck coefficient with increasing temperature, while traditional Peltier coolers, such as those used commercially, have comparatively minimal change in Seebeck coefficient with temperature. When reasonable material property bounds are placed on the thermoelectric leg, the Thomson cooler is predicted to achieve approximately twice the maximum temperature drop of a traditional Peltier cooler with equivalent figure of merit (zT). We anticipate the development of Thomson coolers will ultimately lead to solid state cooling to cryogenic temperatures.
description: The Manuscript has been revised for publication in PRB
Automatic translation and multilingual cultural heritage retrieval: a case study with transcriptions in Europeana (poster)
Creators: name: Marrero, Mónica
name: Isaac, Antoine
name: Freire, Nuno
Publisher: name: Zenodo
Year: 2021
Subjects: multilinguality
cultural heritage
digital libraries
machine translation

description: Poster of the paper Automatic translation and multilingual cultural heritage retrieval: a case study with transcriptions in Europeana. In that work we run an experiment using the Europeana CH digital library as a use case, and we evaluated the effectiveness of a multilingual information retrieval strategy using machine translations to English as pivot language. We used the CEF translation service (eTranslation) for the translation of queries and content to English. Dataset available at https://zenodo.org/record/5045066#.YToQFkNfjMU.
Frequency of Retinopathy Among Newly Diagnosed Type 2 Diabetes Mellitus Patients
Creators: name: Sajid, Muhammad
name: Mehmood, Seemab
name: Ibrahim Khan, Muhammad
name: Mansha, Faiza
name: Leong-on, Ma. Socorro Gonzaga
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310505
subject: Gene expression (incl. microarray and other genome-wide approaches)
classificationCode: 420305
subject: Health and community services
classificationCode: 420309
subject: Health management
classificationCode: 420312
subject: Implementation science and evaluation
classificationCode: 310507
subject: Genetic immunology
classificationCode: 310509
subject: Genomics
classificationCode: 310510
subject: Molecular evolution
classificationCode: 310508
subject: Genome structure and regulation

description: Background:Diabetic retinopathy, a sight-threatening microvascular disease affecting the retina, is a significant concern in individuals with Type 2 Diabetes Mellitus (T2DM) due to its potential to cause blindness when left untreated.Objective:The research objective was to investigate the frequency of retinopathy in newly diagnosed patients with T2DM.Methodology:A six-month cross-sectional study was conducted at the Pakistan Institute of Medical Sciences (PIMS) involving 296 Type 2 Diabetes Mellitus (T2DM) patients aged 18 to 60. The research used specialist technology for clinical assessments of diabetic retinopathy and excluded participants with particular retinal diseases. SPSS 27.0 was used to analyze the data, which included a number of characteristics such as age, gender, and the type and presence of retinopathy.Results:The age range of the participants was 18 to 60 years, with the bulk (n = 166) falling into the fourth decade with an average age of 36.95 ± 10.12 years. Diabetic retinopathy was seen in 61 people (20.60%) who had been clinically diagnosed with type II diabetes mellitus. There were 39 (13.17%) men and 22 (7.43%) females among them. The hemoglobin A1C for individuals with diabetic retinopathy was found to be 8.4 ± 1.4. In patients with other forms of retinopathy, background retinopathy was found in 32 patients (n=19; 31.14%), 13 of whom were women, and 13 of whom were males.Conclusion:This study identified a substantial rate of diabetic retinopathy (20.60%) in newly diagnosed T2DM patients, underscoring the importance of early detection and glycemic control to manage this common complication
title: The Value of Peer-Learning in the teaching of Human Factors in Radiology- a Teaching Paradigm.
Creators: name: Sadler, Timothy
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Computer applications
subject: eHealth
subject: Professional issues
subject: Experimental
subject: Safety
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1. Understand the importance of human factors in Radiology 2. Develop an understanding of how peer learning can enhance the teaching of human factors in...
Creating vortons and three-dimensional skyrmions from domain wall annihilation with stretched vortices in Bose-Einstein condensates
Creators: name: Nitta, Muneto
name: Kasamatsu, Kenichi
name: Tsubota, Makoto
name: Takeuchi, Hiromitsu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a mechanism to create a vorton or three-dimensional skyrmion in phase-separated two-component BECs with the order parameters Psi_1 and Psi_2 of the two condensates. We consider a pair of a domain wall (brane) and an anti-domain wall (anti-brane) stretched by vortices (strings), where the Psi_2 component with a vortex winding is sandwiched by two domains of the Psi_1 component. The vortons appear when the domain wall pair annihilates. Experimentally, this can be realized by preparing the phase separation in the order Psi_1, Psi_2 and Psi_1 components, where the nodal plane of a dark soliton in Psi_1 component is filled with the Psi_2 component with vorticity. By selectively removing the filling Psi_2 component gradually with a resonant laser beam, the collision of the brane and anti-brane can be made, creating vortons.
description: 12 pages, 13 figures, published version
title: Visualisation of the Anterolateral Ligament on MRI
Creators: name: Barry, Conor
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Musculoskeletal joint
subject: MR
subject: Surgery
subject: Athletic injuries

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The anterolateral ligament of the knee has been the subject of much discussion in recent years, There have been multiple studies of the knee showing a structure, but very few were definitive in outlining it’s significance. It was initially...
Revealing interference by continuous variable discordant states
Creators: name: Meda, A.
name: Olivares, S.
name: Degiovanni, I. P.
name: Brida, G.
name: Genovese, M.
name: Paris, M. G. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In general, a pair of uncorrelated Gaussian states mixed in a beam splitter produces a correlated state at the output. However, when the inputs are identical Gaussian states the output state is equal to the input, and no correlations appear, as the interference had not taken place. On the other hand, since physical phenomena do have observable effects, and the beam splitter is there, a question arises on how to reveal the interference between the two beams. We prove theoretically and demonstrate experimentally that this is possible if at least one of the two beams is prepared in a discordant, i.e. Gaussian correlated, state with a third beam. We also apply the same technique to reveal the erasure of polarization information. Our experiments involves thermal states and the results show that Gaussian discordant states, even when they show a positive Glauber P-function, may be useful to achieve specific tasks.
description: published version
title: Heinrich Balthasar Bergmann
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Heinrich Balthasar Bergmann as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
title: Gezielte Förderung von strategisch wichtigen Unternehmen besser als Industriestrompreis: Interview
Creators: name: Bernhardt, Lea
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2023

description: DIW Wochenbericht, 90 (2023), 38, S. 522
SU(N)-symmetric quasi-probability distribution functions
Creators: name: Tilma, Todd
name: Nemoto, Kae
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present a set of N-dimensional functions, based on generalized SU(N)-symmetric coherent states, that represent finite-dimensional Wigner functions, Q-functions, and P-functions. We then show the fundamental properties of these functions and discuss their usefulness for analyzing N-dimensional pure and mixed quantum states.
description: 16 pages, 2 figures. Updated text to reflect referee comments
title: Peter Valentin Berkelmann
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Peter Valentin Berkelmann as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
On the RG running of the entanglement entropy of a circle
Creators: name: Casini, H.
name: Huerta, Marina
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show, using strong subadditivity and Lorentz covariance, that in three dimensional space-time the entanglement entropy of a circle is a concave function. This implies the decrease of the coefficient of the area term and the increase of the constant term in the entropy between the ultraviolet and infrared fixed points. This is in accordance with recent holographic c-theorems and with conjectures about the renormalization group flow of the partition function of a three sphere (F-theorem). The irreversibility of the renormalization group flow in three dimensions would follow from the argument provided there is an intrinsic definition for the constant term in the entropy at fixed points. We discuss the difficulties in generalizing this result for spheres in higher dimensions.
description: 15 pages, 3 figures, minor changes
Self-consistency in non-extensive thermodynamics of highly excited hadronic states
Creators: name: Deppman, Airton
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The self-consistency of a thermodynamical theory for hadronic sys- tems based on the non-extensive statistics is investigated. We show that it is possible to obtain a self-consistent theory according to the asymptotic bootstrap principle if the mass spectrum and the energy density increase q-exponentially. A direct consequence is the existence of a limiting effective temperature for the hadronic system. We show that this result is in agreement with experiments.
description: 8 pages
Impact of a Warm Dark Matter late-time velocity dispersion on large-scale structures
Creators: name: Valageas, Patrick
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate whether the late-time (at $z\leq 100$) velocity dispersion expected in Warm Dark Matter scenarios could have some effect on the cosmic web (i.e., outside of virialized halos). We consider effective hydrodynamical equations, with a pressurelike term that agrees at the linear level with the analysis of the Vlasov equation. Then, using analytical methods, based on perturbative expansions and the spherical dynamics, we investigate the impact of this term for a 1 keV dark matter particle. We find that the late-time velocity dispersion has a negligible effect on the power spectrum on perturbative scales and on the halo mass function. However, it has a significant impact on the probability distribution function of the density contrast at $z \sim 3$ on scales smaller than $0.1 h^{-1}$Mpc, which correspond to Lyman-$α$ clouds. Finally, we note that numerical simulations should start at $z_i\geq 100$ rather than $z_i \leq 50$ to avoid underestimating gravitational clustering at low redshifts.
description: 12 pages
Early Childhood Students’ Use of Educational Apps: A case study of Saudi teachers’ perceptions and practices
Creators: name: Alarfaj, Sarah
Publisher: name: University of Leicester
Year: 2021
Subjects: Uncategorized

description: This study explored the potential use of educational apps (EAs) in early childhood education. Studies of teaching and learning have shown not only the benefits of EAs but also certain limitations. Although EAs have been used in classrooms for many years, resistance to them continues to be a common response among teachers (Bovey & Hede, 2001). Researchers have found that teachers’ perspectives play a key role in their adoption of EAs in their classrooms. This study focused on Saudi teachers’ thoughts and use of EAs that have the potential to enable pupils, ages four and five, to learn and support teaching. Most empirical studies have focused on the use of EAs and the nature of students’ interactions with them, while few have addressed teachers’ views of EAs’ ability to affect their teaching. Further, very few studies of the use of technology in classrooms have been conducted in the Kingdom of Saudi Arabia (KSA), where EAs are still considered new teaching methods. The present study was conducted in a state-run pre-school in KSA. Data were collected through interviewing 12 teachers to understand to what extent, how, and why EAs have the potential to be used in classrooms. This was followed by classroom observations to capture the possibility of change EAs bring to teaching and learning. The results show, first, that teachers perceived EAs as useful for facilitating access to learning content drawing on language and literacy, and numeracy. Second, EAs are used daily to enable students to complete an array of self-learning activities (SLAs) individually and in a limited time. Then, the findings illustrate the considerable effects of using EAs, such as holding students’ attention and promoting the development of students’ subject knowledge. However, further analyses highlight that the adoption of EAs faces several barriers, including home use, in terms of parents’ lack of awareness of the effects of technology on their children. Based on these results, practices and further research relevant to the usage of EAs are discussed.
title: Breiter Industriestrompreis ist kein geeignetes Entlastungsinstrument
Creators: name: Bernhardt, Lea
name: Duso, Tomaso
name: Sogalla, Robin
name: Schiersch, Alexander
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2023
Subjects: subject: K32 Environmental, Health, and Safety Law
subject: energy costs
subject: subsidy
subject: competition policy

description: Die stark gestiegenen Energiepreise haben zu einer breiten Diskussion über mögliche Entlastungen für Unternehmen in Form eines Industriestrompreises geführt. Damit sollen Unternehmen international wettbewerbsfähig bleiben und es soll eine Abwanderung ins Ausland verhindert werden. Tatsächlich liegen die deutschen Strompreise für (Industrie-) Unternehmen aufgrund vielfacher Abgabenbefreiungen im europäischen Mittelfeld, sind aber deutlich höher als im außereuropäischen Ausland. Simulationen mit unterschiedlich starken Preisanstiegen zeigen, dass nur ein sehr kleiner Teil der Unternehmen große Kostenanstiege im Verhältnis zu ihrer Wertschöpfung zu verzeichnen hätte. Zudem besteht eine große Heterogenität zwischen den Branchen. So ist der Bereich der Industriegase oder die Aluminiumproduktion deutlich stärker betroffen als andere Industrien. Breit angelegte Industriestrompreise erscheinen daher wenig zielführend. Selektive Entlastungen für bestimmte Bereiche könnten wettbewerbsrechtlich problematisch sein und müssen möglicherweise weit über den Brückencharakter des Industriepreises hinaus gewährt werden.
description: DIW Wochenbericht, 90 (2023), 38, S. 513-521
Unlocking the secrets of stellar haloes using combined star counts and surface photometry
Creators: name: Zackrisson, E.
name: de Jong, R. S.
name: Micheva, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The stellar haloes of galaxies can currently be studied either through observations of resolved halo stars or through surface photometry. Curiously, the two methods appear to give conflicting results, as a number of surface photometry measurements have revealed integrated colours that are too red to be reconciled with the halo properties inferred from the study of resolved stars. Several explanations for this anomaly have been proposed - including dust photoluminescence, extinction of extragalactic background light and a bottom-heavy stellar initial mass function. A decisive test is, however, still lacking. Here, we explain how observations of the halo of a nearby galaxy, involving a combination of both surface photometry and bright star counts, can be used to distinguish between the proposed explanations. We derive the observational requirements for this endeavour and find that star counts in filters VI and surface photometry in filters VIJ appears to be the optimal strategy. Since the required halo star counts are already available for many nearby galaxies, the most challenging part of this test is likely to be the optical surface photometry, which requires several nights of exposure time on a 4-8 m telescope, and the near-IR surface photometry, which is most readily carried out using the upcoming James Webb Space Telescope.
description: 14 pages, 4 figures; v.2 matches published version (minor changes only)
Forced Migration And The Dialectic Of Home And Return: The Case Of South Sudanese Refugees In Kakuma Refugee Camp And Kalobeyei Integrated Settlement In Kenya, 1991 – 2019
Creators: name: Muluka, Barrack O.
Publisher: name: University of Leicester
Year: 2021
Subjects: Uncategorized

description: This research focuses on emerging permanence of refugee situations in Africa, manifested in perduring refugee camps. Cast in the thematic mould of forced migration and the dialectic of home and return, it seeks to appreciate the drivers of permanence in refugee situations, even after there have been opportunities to decamp. Using the case of Southern Sudanese refugees in Kakuma and Kalobeyei in North Western Kenya (1991 – 2019), the research is especially keen to hear from the scarce voice of the refugee in scholarly and policy discourses on forced migration. We use a combination of qualitative approaches in the naturalistic prism, attended by relevant literature surveys. The study is cast in the conceptual context of the International Humanitarian Law, together with Neoclassical migration theories. We observe that Kakuma and Kalobeyei refugee camps have steadily morphed from temporary humanitarian intervention centres into holding places in incomplete migrations from Africa to Organization for Economic Cooperation and Development (OECD) Countries. We argue that these camps are only a stage in an unfinished multistage migration process. We contend further that a critical mass of the peoples in these movements gave up on their dysfunctional country long before the migration was triggered off. Accordingly, the violent spark that pushed them into refugee camps, only represented the ripe moment for their relocation to begin. Return is, therefore, not their preferred option. Accordingly, the camped refugee situation provides an astute avenue for resettlement in the West. Resettlement is an opportunity many are willing to wait for indefinitely, despite what are sometimes harsh living conditions. Refugee relief and support services, however, provide a comparatively favourable waiting environment, contrasted with life in the place of origin. We conclude that refugee camps of the kind under study are likely to perdure, until the underlying displacing environments are addressed through state reform.
Pade approximants for functions with branch points - strong asymptotics of Nuttall-Stahl polynomials
Creators: name: Aptekarev, Alexander I.
name: Yattselev, Maxim L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42C05, 41A20, 41A21

description: Let f be a germ of an analytic function at infinity that can be analytically continued along any path in the complex plane deprived of a finite set of points, f \in\mathcal{A}(\bar{\C} \setminus A), \sharp A
description: 47 pages, 8 figures
Action-angle coherent states for quantum systems with cylindric phase space
Creators: name: Aremua, I.
name: Gazeau, J. P.
name: Hounkonnou, M. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81R30, 81S05, 81S30, 81P16

description: Quantum versions of cylindric phase space, like for the motion of a particle on the circle, are obtained through different families of coherent states. The latter are built from various probability distributions of the action variable. The method is illustrated with Gaussian distributions and uniform distributions on intervals, and resulting quantizations are explored.
Endomorphisms and automorphisms of locally covariant quantum field theories
Creators: name: Fewster, Christopher J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the framework of locally covariant quantum field theory, a theory is described as a functor from a category of spacetimes to a category of *-algebras. It is proposed that the global gauge group of such a theory can be identified as the group of automorphisms of the defining functor. Consequently, multiplets of fields may be identified at the functorial level. It is shown that locally covariant theories that obey standard assumptions in Minkowski space, including energy compactness, have no proper endomorphisms (i.e., all endomorphisms are automorphisms) and have a compact automorphism group. Further, it is shown how the endomorphisms and automorphisms of a locally covariant theory may, in principle, be classified in any single spacetime. As an example, the endomorphisms and automorphisms of a system of finitely many free scalar fields are completely classified.
description: v2 45pp, expanded to include additional results; presentation improved and an error corrected. To appear in Rev Math Phys
title: Andreas Gottlieb von Bernstorff
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Andreas Gottlieb von Bernstorff as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
title: Christiaan Karel von Lintelo
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Christiaan Karel von Lintelo as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Starchy food during Pre-Aksumite and Aksumite periods (>800 BCE - 700CE): preliminary insights from Mezber aand Ona Adi, Tigray
Creators: name: Ruiz-Giralt, Abel
name: Nixon Darcus, Laurie
name: D'Andrea, Catherine
name: Biagetti, Stefano
name: Madella, Marco
name: Lancelotti, Carla
Publisher: name: Zenodo
Year: 2021
Subjects: starch, foodways, grinding stones, Ethiopia

description: Power point of the presentation delivereed during the 2021 Annual Meeting of the European Association of Archaeology.
Self inductance of a wire loop as a curve integral
Creators: name: Dengler, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: It is shown that the self inductance of a wire loop may be written as a curve integral akin to the Neumann formula for the mutual inductance of two wire loops. The only difference is that contributions where the two integration variables get too close to each other must be excluded from the curve integral and evaluated in detail. The contributions of these excluded segments depend on the distribution of the current in the cross section of the wire. They add to a simple constant proportional to the wire length. The error of the new expression is of first order in the wire radius if there are sharp corners and of second order in the wire radius for smooth wire loops.
description: 3 figures
Galaxy cluster strong lensing: image deflections from density fluctuations along the line of sight
Creators: name: Host, Ole
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A standard method to study the mass distribution in galaxy clusters is through strong lensing of background galaxies in which the positions of multiple images of the same source constrain the surface mass distribution of the cluster. However, current parametrized mass models can often only reproduce the observed positions to within one or a few arcsec which is worse than the positional measurement uncertainty. One suggested explanation for this discrepancy is the additional perturbations of the path of the light ray caused by matter density fluctuations along the line of sight. We investigate this by calculating the statistical expectation value for the angular deflections caused by density fluctuations, which can be done given the matter power spectrum. We find that density fluctuations can, indeed, produce deflections of a few arcsec. We also find that the deflection angle of a particular image is expected to increase with source redshift and with the angular distance on the sky to the lens. Since the light rays of neighbouring images pass through much the same density fluctuations, it turns out that the images' expected deflection angles can be highly correlated. This implies that line-of-sight density fluctuations are a significant and possibly dominant systematic for strong lensing mass modeling and set a lower limit to how well a cluster mass model can be expected to replicate the observed image positions. We discuss how the deflections and correlations should explicitly be taken into account in the mass model fitting procedure.
description: 5 pages, 3 figures, MNL accepted. Matches accepted version
Understanding Pound-Drever-Hall locking using voltage controlled radio-frequency oscillators: An undergraduate experiment
Creators: name: Liekhus-Schmaltz, C. E.
name: Martin, J. D. D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics Education (physics.ed-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We have developed a senior undergraduate experiment that illustrates frequency stabilization techniques using radio-frequency electronics. The primary objective is to frequency stabilize a voltage controlled oscillator to a cavity resonance at 800 MHz using the Pound-Drever-Hall method. This technique is commonly applied to stabilize lasers at optical frequencies. By using only radio-frequency equipment it is possible to systematically study aspects of the technique more thoroughly, inexpensively, and free from eye hazards. Students also learn about modular radio-frequency electronics and basic feedback control loops. By varying the temperature of the resonator, students can determine the thermal expansion coefficients of copper, aluminum, and super invar.
description: 9 pages, 10 figures
title: Jodocus Lipper
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Jodocus Lipper as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
On "New Massive" 4D Gravity
Creators: name: Bergshoeff, Eric A.
name: Fernandez-Melgarejo, J. J.
name: Rosseel, Jan
name: Townsend, Paul K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a four-dimensional (4D) gauge theory that propagates, unitarily, the five polarization modes of a massive spin-2 particle. These modes are described by a "dual" graviton gauge potential and the Lagrangian is 4th-order in derivatives. As the construction mimics that of 3D "new massive gravity", we call this 4D model (linearized) "new massive dual gravity". We analyse its massless limit, and discuss similarities to the Eddington-Schroedinger model.
description: 17 pages, v2 : version published in JHEP
Signatures of charmonium modification in spatial correlation functions
Creators: name: Karsch, F.
name: Laermann, E.
name: Mukherjee, Swagato
name: Petreczky, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study spatial correlation functions of charmonium in 2+1 flavor QCD using an improved staggered formulation. Contrary to the temporal correlation functions the spatial correlation functions exhibit a strong temperature dependence above the QCD transition temperature. Above this temperature they are sensitive to temporal boundary conditions. Both features become significant at a temperature close to 1.5 Tc and suggest corresponding modifications of charmonium spectral functions.
description: 12 pages, LaTeX, 3 figures
title: Nicolaas Listingk (Listingh)
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Nicolaas Listingk (Listingh) as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
Local Entropy Current in Higher Curvature Gravity and Rindler Hydrodynamics
Creators: name: Eling, Christopher
name: Meyer, Adiel
name: Oz, Yaron
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the hydrodynamic regime of field theories the entropy is upgraded to a local entropy current. The entropy current is constructed phenomenologically order by order in the derivative expansion by requiring that its divergence is non-negative. In the framework of the fluid/gravity correspondence, the entropy current of the fluid is mapped to a vector density associated with the event horizon of the dual geometry. In this work we consider the local horizon entropy current for higher-curvature gravitational theories proposed in arXiv:1202.2469, whose flux for stationary solutions is the Wald entropy. In non-stationary cases this definition contains ambiguities, associated with absence of a preferred timelike Killing vector. We argue that these ambiguities can be eliminated in general by choosing the vector that generates the subset of diffeomorphisms preserving a natural gauge condition on the bulk metric. We study a dynamical, perturbed Rindler horizon in Einstein-Gauss-Bonnet gravity setting and compute the bulk dual solution to second order in fluid gradients. We show that the corresponding unambiguous entropy current at second order has a manifestly non-negative divergence.
description: 28 pages, 2 appendices; v2: added references, fixed typos, one clarifying comment
Editorial
Creators: name: Madureira, António J.
Publisher: name: Acta Radiológica Portuguesa
Year: 2021

description: Iniciado um novo ciclo torna-se importante refletir sobre as experiências passadas e planear os próximos passos. A pandemia que todos temos vivido alterou de modo radical o nosso modo de agir e interatuar, nas nossas vidas pessoais e profissionais. Julgo que é chegado o momento de, com as devidas precauções e seguindo as normas em vigor, tentarmos regressar um pouco à “normalidade”.
description: Acta Radiológica Portuguesa, Vol. 33 N.º 2 (2021): Acta Radiológica Portuguesa
title: Anna Katharina Löffler
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Anna Katharina Löffler as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's
title: Investive Maßnahmen sind nötig, um klimazielkonformes Wachstum zu sichern: Interview
Creators: name: Dany-Knedlik, Geraldine
name: Wittenberg, Erich
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2023

description: DIW Wochenbericht, 90 (2023), 34/35, S. 462
Duality in Shearing Rheology Near the Athermal Jamming Transition
Creators: name: Olsson, Peter
name: Teitel, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the rheology of soft-core frictionless disks in two dimensions in the neighborhood of the athermal jamming transition. From numerical simulations of bidisperse, overdamped, particles, we argue that the divergence of the viscosity below jamming is characteristic of the hard-core limit, independent of the particular soft-core interaction. We develop a mapping from soft-core to hard-core particles that recovers all the critical behavior found in earlier scaling analyses. Using this mapping we derive a duality relation that gives the exponent of the non-linear Herschel-Bulkley rheology above jamming in terms of the exponent of the diverging viscosity below jamming.
description: 5 pages, 4 figures. Manuscript revisions: new title, additional text concerning connections to experiment, revised Fig. 4, other minor changes and clarifications in text. Conclusions remain essentially unchanged. Accepted for publication in Phys. Rev. Lett
title: Erfüllung der Klimaziele kann nur bei richtiger Kombination der Maßnahmen Wachstumsimpulse geben
Creators: name: Bönke, Timm
name: Dany-Knedlik, Geraldine
name: Röger, Werner
Publisher: name: DIW - Deutsches Institut für Wirtschaftsforschung
Year: 2023
Subjects: subject: Q43 Energy and the Macroeconomy
subject: Potentialwachstum
subject: Klimawandel
subject: Energiewende
subject: CO2 Preis

description: Um die Klimaziele zu erreichen, ist es unabdingbar, die CO2-Emissionen zu reduzieren. Unklar ist, welche Maßnahmen dazu erforderlich sind und wie diese das Wirtschaftswachstum beeinflussen. In diesem Wochenbericht werden anhand eines makroökonomischen Modells vier Szenarien im Vergleich zu einem Basisszenario ohne Emissionsreduktionen betrachtet und analysiert, welche Auswirkungen unterschiedliche Maßnahmen wie ein beschleunigter technologischer Fortschritt und/oder eine CO2-Bepreisung auf das Wirtschaftswachstum und die Emissionsziele hätten. Wird unterstellt, dass sich der energiesparende technologische Fortschritt wie in der Vergangenheit entwickelt, können die Emissionsziele lediglich mit einer relativ hohen CO2-Bepreisung erreicht werden. Diese wirkt sich dämpfend auf das Wirtschaftswachstum aus. Würde sich der energiesparende technologische Fortschritt stark beschleunigen, könnten die Emissionsziele auch ohne hohe CO2-Bepreisung erreicht werden und es käme zu leichten Wachstumsgewinnen. Es ist deshalb zu überlegen, inwiefern durch weitere begleitende wirtschafts- und klimapolitische Maßnahmen mögliche Wachstumseinbußen und Verteilungseffekte abgemildert werden können.
description: DIW Wochenbericht, 90 (2023), 34/35, S. 453-461
title: Gottfried Löffler
title: An entry in the LCA Online Dictionary of Leibniz’s Correspondents and Acquaintances
titleType: Subtitle
Creators: name: (:Tba)
Publisher: name: LCA Project
Year: 2018

description: Gottfried Löffler as a personal relation of Leibniz’s: The resource presents biographical information on a correspondent of Leibniz's