cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Μελέτη των αρχών και ανάπτυξη λογισμικoύ για τη διδασκαλία σύγχρονων θεμάτων φυσικής
Creators: name: Χαντσαρίδου, Αναστασία Π.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Διδακτική της φυσικής
Λογισμικό
Παγκόσμιο κλίμα
Διαδίκτυο
Didactics of physics
Software
Global climate
Internet

description: Σκοπός της παρούσας διδακτορικής διατριβής αποτέλεσε η υλοποίηση δύο εκπαιδευτικών συνόλων, κατάλληλων για τη διδασκαλία της ευρύτερης έννοιας του κλίματος σε άτομα που κατέχουν την απαραίτητη για την κατανόηση των υπό εξέταση θεμάτων γνώση, αλλά και στο ευρύτερο κοινό που εκδηλώνει το ενδιαφέρον να ασχοληθεί με συγκεκριμένα ζητήματα. Τα εκπαιδευτικά αυτά σύνολα περιέχουν, ανάμεσα στα άλλα, δύο εφαρμογές λογισμικού και αποτελούν απόρροια μιας γενικότερης προσπάθειας για διάχυση της εξειδικευμένης επιστημονικής γνώσης σε επίπεδα κατώτερα του επιστημονικού. Οι επιστήμες που εμπλέκονται στην παρούσα εργασία είναι από τη μια η επιστήμη της Φυσικής, με την πληθώρα των επιμέρους γνωστικών αντικειμένων που προσφέρει προς μελέτη η έρευνα, και από την άλλη οι επιστήμες της Εκπαιδευτικής Τεχνολογίας και της Παιδαγωγικής που ασχολούνται ανάμεσα στα αλλα με τη μελέτη των αρχών που θα πρέπει να διέπουν το σχεδιασμό και την ανάπτυξη λογισμικού εκπαιδευτικού χαρακτήρα...Από την όλη εργασία προκύπτει το συμπέρασμα ότι είναι εφικτή η ιδέα της ανάπτυξης εκπαιδευτικών συνόλων με θεωρητική βάση το μοντέλο του ενεργειακού ισοζυγίου για τη μελέτη του κλίματος από άτομα κάθε ηλικίας. Επιπλέον τα δύο εκπαιδευτικά σύνολα που σχεδιάστηκαν και υλοποιήθηκαν είναι κατάλληλα για διδακτική χρήση στα πλαίσια της διδασκαλίας σχετικών με το παρουσιαζόμενο αντικείμενο μαθημάτων, τόσο στη δευτεροβάθμια όσο και στην τριτοβάθμια εκπαίδευση και ακόμη μπορούν να ενταχθούν στα πλαίσια της ευέλικτης ζώνης. Μπορούν δε να επεκταθούν, ώστε να συμπεριλάβουν τη μελέτη του κλίματος διαφόρων πλανητών...
description: The aim of the present Thesis was to develop educational material appropriate to be used during the instruction of the concept of climate to people with a basic scientific knowledge concerning the subject matter, as well as to people who are interested in studying the climate. For this reason two educational sets were developed, which include among other things two software applications. The sciences that are involved in this research are on the one hand the science of Physics with the enormous variety of the different cognitive subjects that are available for research, and on the other hand the sciences of Educational Technology and Pedagogy, which among other things are responsible for setting the principles that should be considered by anyone who wishes to design and develop educational software... From all the above we conclude that it is possible to develop educational sets that are based on the energy balance clmate model in order to study the earth's climate. The two educational sets that were designed and developed are appropriate for instruction at all levels of education, as well as for use by the general public. They can also be expanded in order to include the study of the climate of several other planets...
The Trajectories of Tourism Ventures vis-à-vis Prospects of Poverty Alleviation in South Asia -An Exploratory Reportage
Creators: name: ARNAB GANTAIT
Publisher: name: figshare
Year: 2021
Subjects: subject: 140216 Tourism Economics
subject: FOS: Economics and business
subject: 150603 Tourism Management
subject: 150605 Tourism Resource Appraisal
subject: 150601 Impacts of Tourism
subject: 160402 Recreation, Leisure and Tourism Geography
subject: FOS: Social and economic geography
subject: 150602 Tourism Forecasting
subject: 150699 Tourism not elsewhere classified
subject: 150604 Tourism Marketing
subject: 160513 Tourism Policy
subject: FOS: Political science
subject: 159999 Commerce, Management, Tourism and Services not elsewhere classified

description: Poverty is a ubiquitous and prevalent predicament in South Asia which is home to a quarter of the world population and nearly one-third of the poor people in the world. Albeit, there has been a sizeable reduction in the poverty headcount ratio since 1990, about 256 million people remain in absolute poverty in the region. However, the region; is blessed with enthralling natural resources and cultural embodiments. These assets are promoted as tourism products which in turn would fetch foreign as well as domestic earnings. The tourism industry is experiencing sustained and substantial growth, contributing a total of 9.8% to the world GDP and 9.5% to global employment. Despite possessing incredible facets of tourism, South Asian nations haven’t been able to woo its fair share of tourists. The primary aim of this paper is to highlight the potential of tourism as a panacea for poverty issues in the South Asian context. Further, tourism-poverty studies have been mostly focused on African or Southeast Asian regions. This paper is an attempt to bridge the existing gap by assimilating the leads from various dossiers, consultancy reports, and case studies that underpin the potential of tourism in mitigating poverty in South Asia. The present work provides a broad picture of poverty issues in South Asia and also presents an in-depth review of the tourism- poverty linkages. The lacunae in terms of infrastructure, planning, and promotion in the realm of tourism in South Asia are dealt with in this paper.
Observation of B^{\pm} \to χ_{c1} π^{\pm} and Search for Direct CP Violation
Creators: name: The Belle Collaboration
name: Kumar, R.
name: Singh, J. B.
name: Abe, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report the first observation of $B^{\pm} \to χ_{c1} π^{\pm}$, the Cabibbo- and color-suppressed decay in a data sample of $386\times 10^6$~$B\bar B$ events collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe $55\pm10$ signal events with a statistical significance of $6.3σ$ including systematic uncertainties. The measured branching fraction and charge-asymmetry is $\mathcal {B}(B^{\pm} \to χ_{c1} π^{\pm}) = (2.2\pm 0.4\pm 0.3)\times 10^{-5}$ and $\mathcal{A}_π = 0.07 \pm 0.18\pm 0.02$, respectively. We also determine the ratio $\mathcal {B}(B^{\pm} \to χ_{c1} π^{\pm})/\mathcal {B}(B^{\pm} \to χ_{c1} K^{\pm}) = (4.3\pm 0.8\pm 0.3) %$.
description: 5 Pages, 4 figures, BELLE-CONF-0644 (ICHEP06), Submitted to PRD(RC)
Development of Hyperkinesias after Long-term Pallidal Stimulation for Idiopathic Segmental Dystonia
Creators: name: Wloch, Andreas
name: Blahak, Christian
name: Abdallat, Mahmoud
name: Heissler, Hans E.
name: Wolf, Marc E.
name: Krauss, Joachim K.
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2017

description: Background: Chronic deep brain stimulation (DBS) of the globus pallidus internus (GPi) has become an established treatment for dystonia. While bradykinetic symptoms may occur on chronic stimulation, the appearance of hyperkinetic movements has not been well characterized. Case Report: We report on the development of hyperkinesias after more than 10 years of GPi DBS. Discussion: Hyperkinesias may evolve upon long-term GPi DBS in dystonia. This might be related to a combined effect consisting of a reduced threshold for effective GPi stimulation for dystonia and spread of current to the globus pallidus externus.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Calcium-related signal transduction systems in developing visual cortex
Creators: name: Jia, Wei-Guo
Publisher: name: University of British Columbia
Year: 2011

description: Neuronal connections in cat visual cortex are highly susceptible to visual experience at early postnatal age and thus serve as a useful model of neural plasticity. The biochemical mechanisms underlying this cortical plasticity remain unclear. In this thesis, the development of several elements in calcium-related signal transduction systems, including the type-1 muscarinic and alpha-1 adrenoceptor systems as examples of cell surface receptors and protein kinase C. calcium/calmodulin dependent kinase II and inositol 1,4,5 phosphotate receptors as second messenger targets, were investigated using the methods of immunocytochemistry and autoradiography. The results show that each receptor develops with its own time-table and laminar distribution; the various elements all culminate and display the maximal colocalization during the critical period; and, only at this age, the cortical levels of the receptors and kinases are dependent on subcortical afferents. The results suggest that cell surface receptors and their second messenger targets develop in specific temporal and spatial patterns, which may be both genetically and environmentally determined, and this specific sequence of development of the molecules for signal transduction results in a series of modifications in the morphology and physiology of the developing cortex leading to its maturation.
Evaluating urban environment quality (UEQ) for Class-I Indian city: an integrated RS-GIS based exploratory spatial analysis
Creators: name: Roy, Subham
name: Bose, Arghadeep
name: Majumder, Suranjan
name: Chowdhury, Indrajit Roy
name: Abdo, Hazem Ghassan
name: Almohamad, Hussein
name: Al Dughairi, Ahmed Abdullah
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Urban environmental quality consisting of ecological, physical, and socio-economic components, often deteriorates due to rapid urbanization. Therefore, using Remote sensing and GIS environment, a composite measure is applied to quantify the spatial heterogeneity of urban environmental quality for the Class-1 Indian city (Siliguri). In this study, the Urban Environmental Quality Index was constructed using 15 indicators and three interconnected dimensions (eco-environment, landscape and built-up, and socio-economy). The three domains and Urban Environmental Quality Index were computed utilizing Principal Component Analysis with average aggregation techniques. Exploratory Spatial Data Analysis includes Moran’s I and Local indicator of spatial auto-correlation, were used to leverage the information of spatial clusters, spatial heterogeneity, and outliers based on the Urban Environmental Quality Index. The results show that Siliguri’s northern, north-western, and southern parts experience good environmental quality. The effectiveness of the employed model was checked using R2 (0.832), providing a good fit for the model. Moreover, the spatial pattern of urban environmental quality and the constructed domains (except socio-economy) revealed that the Low-Low values were predominantly clustered in the city centre, while High-High patterns are concentrated towards the periphery. Also, the value of Moran’s I indicated the existence of spatial autocorrelation and non-randomness pattern in Siliguri City. The results obtained from the analysis indicate spatial heterogeneity and spatial differentiation across the study area. The study’s outcome is relevant for urban planning, frequent monitoring of urban environmental quality, urban governance, and the well-being of urban inhabitants for a sustainable urban space.
The effect of non-local derivative on Bose-Einstein condensation
Creators: name: Bouzenna, F. E.
name: Meftah, M. T.
name: Difallah, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this paper, we study the effect of non-local derivative on Bose-Einstein condensation. Firstly, we consider the Caputo-Fabrizio derivative of fractional order αto derive the eigenvalues of non-local Schrödinger equation for a free particle in a 3D box. Afterwards, we consider 3D Bose-Einstein condensation of an ideal gas with the obtained energy spectrum. Interestingly, in this approach the critical temperatures Tc of condensation for 1 < α< 2 are greater than the standard one. Furthermore, the condensation in 2D is shown to be possible. Second and for comparison, we presented, on the basis of a spectrum established by N. Laskin, the critical transition temperature as a function of the fractional parameter α for a system of free bosons governed by an Hamiltonian with power law on the moment (H~pα). In this case, we have demonstrated that the transition temperature is greater than the standard one. By comparing the two transition temperatures (relative to Caputo-Fabrizio and to Laskin), we have found for fixed αand the density ρthat the transition temperature relative to Caputo-fabrizio is greater than relative to Laskin.
description: 8 pages, 2 figures
Sentinel-2 satellite images for monitoring cattle slurry and digestate spreading on emerging wheat crop: a field spectroscopy experiment
Creators: name: Dodin, Maxence
name: Levavasseur, Florent
name: Savoie, Antoine
name: Martin, Lucie
name: Foulon, Jean
name: Vaudour, Emmanuelle
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: This study is aimed to evaluate the utility of Sentinel-2 imagery for monitoring exogenous organic matter (EOM) applied on winter wheat crop, using two spatial scales: proximal and satellite. From proximal sensing, multi-temporal spectral field measurements were taken on experimental fields consisting of three treatments (cattle slurry, liquid and raw digestates) and a control throughout 46 days. From Sentinel-2 satellites, images were analysed before and after EOM application. For both sensing scales, EOM and vegetation indices were used. On any scale of observation, the digestates spread on emerging wheat were easily detectable in late winter, in contrast to spring spreading events which were hindered by the developed vegetation. The agglomerative hierarchical clustering from the EOM indices divided by EVI achieved to discriminate digestates at early and medium stages of vegetation growth. Our findings did not apply for cattle slurry, presumably because of both lower organic and dry matter contents. Digestates spread on emerging wheat are detectable in late winter.Developed vegetation constrains the detection of spring spreading events.Spectral measurements did not separate the field with cattle slurry and the control.The visible to near infrared bands are the most impacted after digestate spreading. Digestates spread on emerging wheat are detectable in late winter. Developed vegetation constrains the detection of spring spreading events. Spectral measurements did not separate the field with cattle slurry and the control. The visible to near infrared bands are the most impacted after digestate spreading.
Ανάπτυξη μεθοδολογίας πεπερασμένων στοιχείων για το δυναμικό, μη γραμμικό υπολογισμό επιφανειακών φορέων
Creators: name: Παρασκευόπουλος, Ηλίας Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Διαγώνιο μητρώο μάζας
Σύγκλιση
Πλαστική ροή
Diagonal mass matrix
Convergence (INF-SUP)
Plastic flow

description: Στη παρούσα διδακτορική διατριβή αναπτύχθηκε μια γενική ορθολογική και αξιόπιστη μεθοδολογία πεπερασμένων στοιχείων για την επίλυση γραμμικών και γεωμετρικά μη-γραμμικών προβλημάτων, σχεδόν ασυμπίεστων υλικών, j2 πλαστικής ροής, υπό συνθήκες επίπεδης j και προβλημάτων κάμψης πλακών. Ακόμα, αναπτύχθηκε μια ορθολογική μεθοδολογία για την διαγωνιοποίηση μητρώων μάζας, για την αποδοτική αντιμετώπιση προβλημάτων στο πεδίο της ελαστοδυναμικής. Επίσης, παρουσιάστηκε μια μεθοδολογία για την εκτίμηση της διακριτής μορφής των συνθηκών INF-SUP σε επίπεδο στοιχείου
description: The aim of the present thesis is to develop a general, rational and reliable methodology if FEM for the solution of linear and geometrically non-linear problems nearly incompressible materials, j20plastic flow c under plane strain conditions and plate bending problems, moreover the aim is to to develop a rational methodology for the diagnolization of mass matrices, in order to deal with elastodynamic problems efficiently, furthermore, amthodology, is presented for the estimation of the discrete form of the INF-SUP condition at the element level
Tracking Based Semi-Automatic Annotation for Scene Text Videos
Creators: name: Zhu, Jiajun
name: Jiang, Xiufeng
name: Jia, Zhiwei
name: Xu, Shugong
name: Cao, Shan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recently, video scene text detection has received increasing attention due to its comprehensive applications. However, the lack of annotated scene text video datasets has become one of the most important problems, which hinders the development of video scene text detection. The existing scene text video datasets are not large-scale due to the expensive cost caused by manual labeling. In addition, the text instances in these datasets are too clear to be a challenge. To address the above issues, we propose a tracking based semi-automatic labeling strategy for scene text videos in this paper. We get semi-automatic scene text annotation by labeling manually for the first frame and tracking automatically for the subsequent frames, which avoid the huge cost of manual labeling. Moreover, a paired low-quality scene text video dataset named Text-RBL is proposed, consisting of raw videos, blurry videos, and low-resolution videos, labeled by the proposed convenient semi-automatic labeling strategy. Through an averaging operation and bicubic down-sampling operation over the raw videos, we can efficiently obtain blurry videos and low-resolution videos paired with raw videos separately. To verify the effectiveness of Text-RBL, we propose a baseline model combined with the text detector and tracker for video scene text detection. Moreover, a failure detection scheme is designed to alleviate the baseline model drift issue caused by complex scenes. Extensive experiments demonstrate that Text-RBL with paired low-quality videos labeled by the semi-automatic method can significantly improve the performance of the text detector in low-quality scenes.
description: Published in: IEEE Access ( Early Access )
Espacios para mujeres activistas indígenas en Guatemala
Creators: name: Roslynn Beighton
Publisher: name: figshare
Year: 2021
Subjects: subject: 169901 Gender Specific Studies
subject: FOS: Sociology
subject: 160499 Human Geography not elsewhere classified
subject: FOS: Social and economic geography
subject: 160803 Race and Ethnic Relations
subject: 160805 Social Change
subject: 160403 Social and Cultural Geography
subject: 160807 Sociological Methodology and Research Methods
subject: 169999 Studies in Human Society not elsewhere classified
subject: 220104 Human Rights and Justice Issues
subject: FOS: Philosophy, ethics and religion

description: Esta tesis se basa en los hallazgos de una colección de entrevistas realizadas a profundidad en Guatemala durante un mes de trabajo en campo con mujeres indígenas que trabajan en organizaciones comunitarias de base, basado en los derechos humanos. Se utiliza un lente interseccional para enmarcar de forma analítica las narrativas de estas activistas. Esta tesis examina la estructura y las redes de apoyo de los espacios actuales para el activismo, analiza los obstáculos que encuentran estas mujeres y la inspiración detrás de sus motivaciones para el activismo, incluida la influencia del ‘pensamiento feminista’, los modelos comunitarios y la cosmovisión maya. Por último, propone recomendaciones a nivel local, nacional e internacional, para apoyar activistas indígenas en Guatemala y mundialmente.
Accuracy Evaluation of an Optical Lattice Clock with Bosonic Atoms
Creators: name: Baillard, Xavier
name: Fouché, Mathilde
name: Targat, Rodolphe Le
name: Westergaard, Philip G.
name: Lecallier, Arnaud
name: Coq, Yann Le
name: Rovera, Giovanni D.
name: Bize, Sebastien
name: Lemonde, Pierre
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report the first accuracy evaluation of an optical lattice clock based on the 1S0 - 3P0 transition of an alkaline earth boson, namely 88Sr atoms. This transition has been enabled using a static coupling magnetic field. The clock frequency is determined to be 429 228 066 418 009(32) Hz. The isotopic shift between 87Sr and 88Sr is 62 188 135 Hz with fractional uncertainty 5.10^{-7}. We discuss the conditions necessary to reach a clock accuracy of 10^{-17} or less using this scheme.
description: 3 pages, 4 figures, uses ol.sty file
Speech–Language Pathology Evaluation and Management of Hyperkinetic Disorders Affecting Speech and Swallowing Function
Creators: name: Barkmeier-Kraemer, Julie M
name: Clark, Heather M
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2017

description: Background: Hyperkinetic dysarthria is characterized by abnormal involuntary movements affecting respiratory, phonatory, and articulatory structures impacting speech and deglutition. Speech–language pathologists (SLPs) play an important role in the evaluation and management of dysarthria and dysphagia. This review describes the standard clinical evaluation and treatment approaches by SLPs for addressing impaired speech and deglutition in specific hyperkinetic dysarthria populations. Methods: A literature review was conducted using the data sources of PubMed, Cochrane Library, and Google Scholar. Search terms included 1) hyperkinetic dysarthria, essential voice tremor, voice tremor, vocal tremor, spasmodic dysphonia, spastic dysphonia, oromandibular dystonia, Meige syndrome, orofacial, cervical dystonia, dystonia, dyskinesia, chorea, Huntington’s Disease, myoclonus; and evaluation/treatment terms: 2) Speech–Language Pathology, Speech Pathology, Evaluation, Assessment, Dysphagia, Swallowing, Treatment, Management, and diagnosis. Results: The standard SLP clinical speech and swallowing evaluation of chorea/Huntington’s disease, myoclonus, focal and segmental dystonia, and essential vocal tremor typically includes 1) case history; 2) examination of the tone, symmetry, and sensorimotor function of the speech structures during non-speech, speech and swallowing relevant activities (i.e., cranial nerve assessment); 3) evaluation of speech characteristics; and 4) patient self-report of the impact of their disorder on activities of daily living. SLP management of individuals with hyperkinetic dysarthria includes behavioral and compensatory strategies for addressing compromised speech and intelligibility. Swallowing disorders are managed based on individual symptoms and the underlying pathophysiology determined during evaluation. Discussion: SLPs play an important role in contributing to the differential diagnosis and management of impaired speech and deglutition associated with hyperkinetic disorders.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Surface-enhanced Raman spectroscopy-based metabolomics for the discrimination of Keemun black teas coupled with chemometrics
Creators: name: Ren, Yin-feng
name: Ye, Zhi-hao
name: Liu, Xiao-qian
name: Xia, Wei-jing
name: Yuan, Yan
name: Zhu, Hai-yan
name: Chen, Xiao-tong
name: Hou, Ru-yan
name: Cai, Hui-mei
name: Li, Da-xiang
name: Granato, Daniel
name: Peng, Chuan-yi
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 31
subject: Biological sciences
subject: FOS: Biological sciences

description: In the present study, the Surface-enhanced Raman Spectroscopy (SERS)-based metabolomics approach coupled  with chemometrics was developed to determine the geographic origins of Keemun black tea. The SERS peaks enhanced by Ag nanoparticles at Δv = 555, 644, 731, 955, 1240, 1321, and 1539 cm− 1 were selected, and the intensities were calculated for chemometric analysis. Linear discriminant analysis (LDA) presented an average discrimination accuracy of 86.3%, with 84.3% cross-validation for evaluation. The recognition of three machine learning algorithms, namely feedforward neural network (FNN), random forest (RF), and K-Nearest Neighbor (KNN), for black tea were 93.5%, 93.5%, and 87.1%, respectively. Herein, this study demonstrates the potential of the SERS technique coupled with AgNPs and chemometrics as an accessible, prompt, and fast method for discriminating the geographic origins of teas.
Localization of bosonic atoms by fermionic impurities in a 3d optical lattice
Creators: name: Ospelkaus, S.
name: Ospelkaus, C.
name: Wille, O.
name: Succo, M.
name: Ernst, P.
name: Sengstock, K.
name: Bongs, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We observe a localized phase of ultracold bosonic quantum gases in a 3-dimensional optical lattice induced by a small contribution of fermionic atoms acting as impurities in a Fermi-Bose quantum gas mixture. In particular we study the dependence of this transition on the fermionic 40K impurity concentration by a comparison to the corresponding superfluid to Mott insulator transition in a pure bosonic 87Rb gas and find a significant shift in the transition parameter. The observed shift is larger than expected based on a mean-field argument, which is a strong indication that disorder-related effects play a significant role.
description: 4 pages, 4 figures
Evolution of the electronic structure in Ta$_2$NiSe$_5$ across the structural transition revealed by resonant inelastic x-ray scattering
Creators: name: Lu, Haiyu
name: Ross, Matteo
name: Kim, 1Jung-ho
name: Yavas, Hasan
name: Said, Ayman
name: Nag, Abhishek
name: Garcia-Fernandez, Mirian
name: Agrestini, Stefano
name: Zhou, Kejin
name: Jia, Chunjing
name: Moritz, Brian
name: Devereaux, Thomas P.
name: Shen, Zhi-Xun
name: Lee, Wei-Sheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We utilized high-energy-resolution resonant inelastic X-ray scattering (RIXS) at both the Ta and Ni $L_3$-edges to map out element-specific particle-hole excitations in Ta$_2$NiSe$_5$ across the phase transition. Our results reveal a momentum dependent gap-like feature in the low energy spectrum, which agrees well with the band gap in element-specific joint density of states calculations based on ab initio estimates of the electronic structure in both the low temperature monoclinic and the high temperature orthorhombic structure. Below $T_c$, the RIXS energy-momentum map shows a minimal gap at the Brillouin zone center ($\sim$ 0.16 eV), confirming that Ta$_2$NiSe$_5$ possesses a direct band gap in its low temperature ground state. However, inside the gap, no signature of anticipated collective modes with an energy scale comparable to the gap size can be identified. Upon increasing the temperature to above $T_c$, whereas the gap at the zone center closes, the RIXS map at finite momenta still possesses the gross features of the low temperature map, suggesting a substantial mixing between the Ta and Ni orbits in the conduction and valence bands, which does not change substantially across the phase transition. Our experimental observations and comparison to the theoretical calculations lend further support that the phase transition and the corresponding gap opening in Ta$_2$NiSe$_5$ is largely structural by nature with possible minor contribution from the putative exciton condensate.
description: The manuscript has been accepted by Physical Review B
title: Suzuki-Polykondensation hochmolekularer Poly-para-phenylene mittels Mikrowellenstrahlung
Creators: name: von Irmer, Jonas
Publisher: name: UNSPECIFIED
Year: 2021

description: Die Suzuki-Polykondensation (SPC) von Poly-para-phenylenen (PPP) wird durch ein besonders zeiteffizientes Syntheseprotokoll unter Verwendung von Mikrowellen-Erwärmung weiterentwickelt. Mehrzähnige Dendrimer- sowie Polymer-basierte Phosphin-Palladium-Komplexe werden entwickelt und als Katalysatoren in der Mikrowellen-SPC eingesetzt, um ein Kettenwachstumsmechanismus zu induzieren. Erstmals wird die Katalysatortransfer Polymerisation (CTP) unter Mikrowellen-Erwärmung durchgeführt und liefert dabei besonders hochmolekulare Produkte, welche mittels MALDI-TOF untersucht werden, um das Ablaufen nach einem Kettenwachstums-Mechanismus zu beweisen.
Solar Orbiter Observations of the Kelvin-Helmholtz Instability in the Solar Wind
Creators: name: Kieokaew, R.
name: Lavraud, B.
name: Yang, Y.
name: Matthaeus, W. H.
name: Ruffolo, D.
name: Stawarz, J. E.
name: Aizawa, S.
name: Foullon, C.
name: Génot, V.
name: Pinto, R. F.
name: Fargette, N.
name: Louarn, P.
name: Rouillard, A.
name: Fedorov, A.
name: Penou, E.
name: Owen, C. J.
name: Horbury, T.
name: O'Brien, H.
name: Evans, V.
name: Angelini, V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The Kelvin-Helmholtz instability (KHI) is a nonlinear shear-driven instability that develops at the interface between shear flows in plasmas. KHI has been inferred in various astrophysical plasmas and has been observed in situ at the magnetospheric boundaries of solar-system planets and through remote sensing at the boundaries of coronal mass ejections. While it was hypothesized to play an important role in the mixing of plasmas and in triggering solar wind fluctuations, its direct and unambiguous observation in the solar wind was still lacking. We report in-situ observations of ongoing KHI in the solar wind using Solar Orbiter during its cruise phase. The KHI is found in a shear layer in the slow solar wind in the close vicinity of the Heliospheric Current Sheet, with properties satisfying linear theory for its development. An analysis is performed to derive the local configuration of the KHI. A 2-D MHD simulation is also set up with empirical values to test the stability of the shear layer. In addition, magnetic spectra of the KHI event are analyzed. We find that the observed conditions satisfy the KHI onset criterion from the linear theory analysis, and its development is further confirmed by the simulation. The current sheet geometry analyses are found to be consistent with KHI development. Additionally, we report observations of an ion jet consistent with magnetic reconnection at a compressed current sheet within the KHI interval. The KHI is found to excite magnetic and velocity fluctuations with power-law scalings that approximately follow $k^{-5/3}$ and $k^{-2.8}$ in the inertial and dissipation ranges, respectively. These observations provide robust evidence of KHI development in the solar wind. This sheds new light on the process of shear-driven turbulence as mediated by the KHI with implications for the driving of solar wind fluctuations.
Approximation of holomorphic mappings on strongly pseudoconvex domains
Creators: name: Drnovsek, Barbara Drinovec
name: Forstneric, Franc
Publisher: name: arXiv
Year: 2006
Subjects: subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 32E10, 32E30, 32H02, 46G20, 58B12

description: Let D be a relatively compact strongly pseudoconvex domain in a Stein manifold, and let Y be a complex manifold. We prove that the set A(D,Y), consisting of all continuous maps from the closure of D to Y which are holomorphic in D, is a complex Banach manifold. When D is the unit disc in C (or any other topologically trivial strongly pseudoconvex domain in a Stein manifold), A(D,Y) is locally modeled on the Banach space A(D,C^n)=A(D)^n with n=dim Y. Analogous results hold for maps which are holomorphic in D and of class C^r up to the boundary for any positive integer r. We also establish the Oka property for sections of continuous or smooth fiber bundles over the closure of D which are holomorphic over D and whose fiber enjoys the Convex approximation property. The main analytic technique used in the paper is a method of gluing holomorphic sprays over Cartan pairs in Stein manifolds, with control up to the boundary, which was developed in our paper "Holomorphic curves in complex manifolds" (Duke Math. J. 139 (2007), no. 2, 203--253).
Challenges for chlorophyll-a remote sensing in a highly variable turbidity estuary, an implementation with sentinel-2
Creators: name: Maciel, Fernanda P.
name: Haakonsson, Signe
name: de León, Lucía Ponce
name: Bonilla, Sylvia
name: Pedocchi, Francisco
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Astronomical and Space Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Coastal waters have high ecological and economic relevance and are globally threatened by intense human activities leading to eutrophication. The decameter resolution of Sentinel-2 Multispectral Instrument (S2-MSI) provides an advantage to detect spatially heterogeneous phenomena that are limited in extent, such as harmful cyanobacterial blooms (cyanoHABs). Chlorophyll-a is typically used in remote sensing of blooms; however, it remains to be evaluated in several coastal regions of the world. The Río de la Plata estuary (South America) provides a key case study due to its highly variable concentrations of suspended sediments, and the increasing frequency of cyanoHABs. Here, we evaluate the potential and limitations of S2-MSI indices to retrieve chlorophyll-a in these optically complex waters, obtaining regional algorithms and comparing them to previously available ones. We propose an approach to follow the evolution of chlorophyll-a thresholds (10 and 24 μg/L) that can contribute to monitoring programs and early warning strategies of cyanoHABs.
Pinning and wetting transition for (1+1)-dimensional fields with Laplacian interaction
Creators: name: Caravenna, Francesco
name: Deuschel, Jean-Dominique
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35, 60F05, 82B41 (Primary)

description: We consider a random field $φ:\{1,...,N\}\to\mathbb{R}$ as a model for a linear chain attracted to the defect line $φ=0$, that is, the x-axis. The free law of the field is specified by the density $\exp(-\sum_iV(Δφ_i))$ with respect to the Lebesgue measure on $\mathbb{R}^N$, where $Δ$ is the discrete Laplacian and we allow for a very large class of potentials $V(\cdot)$. The interaction with the defect line is introduced by giving the field a reward $\varepsilon\ge0$ each time it touches the x-axis. We call this model the pinning model. We consider a second model, the wetting model, in which, in addition to the pinning reward, the field is also constrained to stay nonnegative. We show that both models undergo a phase transition as the intensity $\varepsilon$ of the pinning reward varies: both in the pinning ($a=\mathrm{p}$) and in the wetting ($a=\mathrm{w}$) case, there exists a critical value $\varepsilon_c^a$ such that when $\varepsilon>\varepsilon_c^a$ the field touches the defect line a positive fraction of times (localization), while this does not happen for $\varepsilon
description: Published in at http://dx.doi.org/10.1214/08-AOP395 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Huntington Disease: The Complexities of Making and Disclosing a Clinical Diagnosis After Premanifest Genetic Testing
Creators: name: McCusker, Elizabeth Anne
name: Loy, Clement T
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2017

description: The management of patients and families affected by Huntington disease (HD) is complicated by several factors, both practical and ethical. It can be difficult to determine the onset of clinically manifest HD (mHD). In addition, it can be challenging to decide when to disclose the diagnosis to the affected individual. Firstly, the features of HD, an incurable, inherited, neurocognitive disorder that often manifests in young adulthood, influence how the person presents and accepts a diagnosis. Secondly, a positive genetic test for HD may result in a genetic diagnosis, sometimes years before the development of clinical features and the diagnosis of mHD. Thirdly, observational studies of unaffected gene expansion carriers documented HD manifestations up to 10 years before the typical presentation for diagnosis. These developments may permit earlier genetic diagnosis and information regarding the patient’s likely status with respect to the development of clinical disease. Making the genetic diagnosis of HD and providing information regarding disease status, earlier rather than later, respects the person’s right to know and preserves honesty in the doctor/patient relationship. Conversely, delaying the diagnosis respects the right not to know, avoids potential discrimination, and permits the person to live a “normal” life for longer, in the context of a disease without cure. This discussion has implications for other inherited and neurocognitive disorders.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
New p+C data in fixed target experiments and the muon component in extensive air showers
Creators: name: Meurer, Christine
name: Bluemer, J.
name: Engel, R.
name: Haungs, A.
name: Roth, M.
name: collaboration, the HARP
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The interpretation of extensive air shower (EAS) measurements is strongly dependent on the hadronic interaction models used for simulating reference showers. We study the importance of low-energy hadronic interactions in simulated air showers, generated with the simulation package CORSIKA, for the observed characteristics of extensive air showers. In particular we investigate in detail the energy and the phase space regions of secondary particle production which are most important for muon production. This phase space region is covered by fixed target experiments at CERN. In the second part of this work we present preliminary momentum spectra of secondary pi+ and pi- in p+C collisions at 12 GeV/c measured with the HARP spectrometer at the PS accelerator at CERN. In addition we use the new p+C NA49 data at 158 GeV/c to check the reliability of hadronic interaction models for muon production in EAS. Finally, possibilities to measure relevant quantities of hadron production in existing and planned accelerator experiments are discussed.
description: To appear in the proceedings of XIV International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2006), Weihai, China, 15-22 Aug 2006
Negative Myoclonus Induced by Ciprofloxacin
Creators: name: Van Samkar, Anusha
name: De Kleermaeker, Floriaan G.C.M.
name: Te Riele, Margot G.E.
name: Verrips, Aad
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2017

description: Background: Negative myoclonus is characterized by a brief sudden loss of muscle activity, and can be caused by a variety of acquired factors and epilepsy syndromes. Phenomenology Shown: We show a clear video example of a patient with an extensive negative myoclonus that was induced by ciprofloxacin. Educational Value: Several neurotoxic effects have been associated with the use of ciprofloxacin, but negative myoclonus has not been reported previously.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Πρόβλεψη της κατανομής μεγέθους σωματιδίων σε αντιδραστήρες πολυμερισμού αιωρήματος
Creators: name: Κωτούλας, Κωνσταντίνος Θ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Πολυμερισμός ελέυθερων ριζών
Πολυμερισμός αιωρήματος
Πολυ(βινυλοχλωρίδιο)
Πολυστυρένιο
Free-radical polymerization
Suspension polymerization
Poly(vinyl chloride)
Polystyrene

description: Στην παρούσα εργασία γίνεται μια προσπάθεια να αναπτυχθεί ένα γενικευμένο μαθηματικό μοντέλο δυναμικής προσομοίωσης της διεργασίας πολυμερισμού αιωρήματος με στόχο την πρόβλεψη του βαθμού μετατροπής του μονομερούς και των μοριακών και μορφολογικών ιδιοτήτων του παραγόμενου προϊόντος(π.χ. μέσα μοριακά βάρη, κατανομή μοριακού βάρους, μέσο μέγεθος και κατανομή μεγέθους πολυμερικών σωματιδίων, εσωτερικό πορώδες σωματιδίων και φαινόμενη πυκνότητα του παραγόμενου προϊόντος)
description: The present dissertation is concerned with the development of a generalized mathematical model for the simulation of the dynamic operation of the suspension polymrization process and the prediction of the monomer conversion and the molecular and morphological properties of the polymer(e.g. average molecular weights, molecular weight distibution, particle size distribution and mean particle size, grain porosity and bulk density)
Recent Updates on Acquired Hepatocerebral Degeneration
Creators: name: Shin, Hae-Won
name: Park, Hee Kyung
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2017

description: Background: Acquired hepatocerebral degeneration (AHD) refers to a chronic neurological syndrome in patients with advanced hepatobiliary diseases. This comprehensive review focuses on the pathomechanism and neuroimaging findings in AHD. Methods: A PubMed search was performed using the terms “acquired hepatocerebral degeneration,” “chronic hepatocerebral degeneration,” “Non-Wilsonian hepatocerebral degeneration,” “cirrhosis-related parkinsonism,” and “manganese and liver disease.” Results: Multiple mechanisms involving the accumulation of toxic substances such as ammonia or manganese and neuroinflammation may lead to widespread neurodegeneration in AHD. Clinical characteristics include movement disorders, mainly parkinsonism and ataxia-plus syndrome, as well as cognitive impairment with psychiatric features. Neuroimaging studies of AHD with parkinsonism show hyperintensity in the bilateral globus pallidus on T1-weighted magnetic resonance images, whereas molecular imaging of the presynaptic dopaminergic system shows variable findings. Ataxia-plus syndrome in AHD may demonstrate high-signal lesions in the middle cerebellar peduncles on T2-weighted images. Discussion: Future studies are needed to elucidate the exact pathomechanism and neuroimaging findings of this heterogeneous syndrome.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
A Case of Beta-propeller Protein-associated Neurodegeneration due to a Heterozygous Deletion of WDR45
Creators: name: Hermann, Andreas
name: Kitzler, Hagen H
name: Pollack, Tobias
name: Biskup, Saskia
name: Krüger, Stefanie
name: Funke, Claudia
name: Terille, Caterina
name: Haack, Tobias B
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2017

description: Background: Static encephalopathy of childhood with neurodegeneration in adulthood is a phenotypically distinctive, X-linked dominant subtype of neurodegeneration with brain iron accumulation (NBIA). WDR45 mutations were recently identified as causal. WDR45 encodes a beta-propeller scaffold protein with a putative role in autophagy, and the disease has been renamed beta-propeller protein-associated neurodegeneration (BPAN). Case Report: Here we describe a female patient suffering from a classical BPAN phenotype due to a novel heterozygous deletion of WDR45. An initial gene panel and Sanger sequencing approach failed to uncover the molecular defect. Based on the typical clinical and neuroimaging phenotype, quantitative polymerase chain reaction of the WDR45 coding regions was undertaken, and this showed a reduction of the gene dosage by 50% compared with controls. Discussion: An extended search for deletions should be performed in apparently WDR45-negative cases presenting with features of NBIA and should also be considered in young patients with predominant intellectual disabilities and hypertonia/parkinsonism/dystonia.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Theoretical study of I-V characteristics in a coupled long Josephson junctions based on magnesium diboride superconductor
Creators: name: Chimouriya, S. P.
name: Ghimire, B. R.
name: Kim, J. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In the present work, the current-voltage (I-V) characteristics in a coupled long Josephson junction based on magnesium diboride are studied by establishing a system of equations of phase differences of various inter- and intra-band channels starting from the microscopic Hamiltonian of the junction system and simplifying it through the phenomenological procedures such as action, partition function, Hubbard-Stratonovich transformation (bosonization), Grassmann integral, saddle-point approximation, Goldstone mode, phase dependent effective Lagrangian and, finally, Euler-Lagrange equation of motion. The system of equations are solved using finite difference approximation for which the solution of unperturbed sine-Gordon equation is taken as the initial condition. Neumann boundary condition is maintained at both the ends so that the fluxon is capable of reflecting from the end of the system. The phase dependent current is calculated for different tunnel voltage and averaged out over space and time. The current-voltage characteristics are almost linear at low voltage and non-linear at higher voltage which indicates that the more complicated physical phenomena at this situation may occur. At some region of the characteristics, there exist a negative resistance which means that the junction system can be used in specific electronic devices such as oscillators, switches, memories etc. The non-linearity is also sensitive to the layer as well as to the junction thicknesses. Non-linearity occurs for lower voltage and for higher junction and layer thicknesses.
description: 17 pages, 7 figures
Supersymmetric quantum mechanics and coherent states for a deformed oscillator with position-dependent effective mass
Creators: name: da Costa, Bruno G.
name: da Silva, Genilson A. C.
name: Gomez, Ignacio S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the classical and quantum oscillator in the context of a non-additive (deformed) displacement operator, associated with a position-dependent effective mass, by means of the supersymmetric formalism. From the supersymmetric partner Hamiltonians and the shape invariance technique we obtain the eigenstates and the eigenvalues along with the ladders operators, thus showing a preservation of the supersymmetric structure in terms of the deformed counterpartners. The deformed space in supersymmetry allows to characterize position-dependent effective mass, uniform field interactions and to obtain a generalized uncertainty relation (GUP) that behaves as a distinguishability measure for the coherent states, these latter satisfying a periodic evolution of the GUP corrections.
description: 18 pages, 5 figures