cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Carbon allocation patterns in plants and plant ecosystems
Creators: name: Walton, Anne Barber
Publisher: name: University of British Columbia
Year: 2009

description: A study of plant carbon allocation patterns at the ecosystem and cellular levels revealed interactions between ecological and physiological processes. At the global level, ecosystem net' primary production was allocated to lignin and holocellulose synthesis in plant life-forms and plant organs. Forty-eight percent of the global net primary production (carbon) was estimated to be associated with the synthesis of lignin and holocellulose, which are the primary constituents of plant cell walls. The primary ecosystems associated with this lignin and holocellulose production were tropical forests, Northern Hemisphere forests, and savannas. Associated with the annual net production of lignin, it was estimated that 1 x 10¹⁴ moles of nitrogen are reassimilated through the prephenate-arogenate junction which links primary carbon metabolism to secondary carbon metabolism. Estimates of annual net primary production associated with plant life-forms and plant organs indicated that the two greatest contributors were herbaceous and nonvascular aquatic (non-macrophyte) plants. Estimates may provide a basis for future models of pools and fluxes of carbon in the global carbon cycle. At the cellular level, treatment of parsley (Petroselinum crispum L.) cell cultures with the Phytophthora megasperma elicitor caused an immediate increase in the rate of respiratory carbon dioxide evolution in the dark that corresponded to the activation of phosphofructokinase and glucose-6-phosphate dehydrogenase, the key enzymes in the regulation of carbohydrate flow to glycolysis and the oxidative pentose phosphate pathway, respectively. The increased rate of carbon dioxide evolution and the activation of phosphofructokinase and glucose-6-phosphate dehydrogenase are maintained for the duration of the experiments indicating long-term stimulation of respiration through both glycolysis and the oxidative pentose phosphate pathway. A 23% decrease in the C₆:C₁ ratio 60 minutes after elicitation was consistent with increased contribution of the oxidative pentose phosphate pathway to cellular respiration. Long-term activation of the oxidative pentose phosphate pathway following elicitation could serve to maintain the pools of substrates necessary during activation of the shikimic acid pathway, leading to the production of defensive compounds.
$c_0$ has the $p-RN-I$ Property
Creators: name: Daher, Mohahammad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: F.2.2

description: In this work, we introduce the property $p - RN - I$, $1 < p \le +\infty$ and we show that $c_0$ has this property.
description: 7 pages, in French
Bounded excursion stable gravastars and black holes
Creators: name: Rocha, P.
name: Miguelote, A. Y.
name: Chan, R.
name: da Silva, M. F.
name: Santos, N. O.
name: Wang, Anzhong
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Dynamical models of prototype gravastars were constructed in order to study their stability. The models are the Visser-Wiltshire three-layer gravastars, in which an infinitely thin spherical shell of stiff fluid divides the whole spacetime into two regions, where the internal region is de Sitter, and the external is Schwarzschild. It is found that in some cases the models represent the "bounded excursion" stable gravastars, in which the thin shell is oscillating between two finite radii, while in other cases they collapse until the formation of black holes. In the phase space, the region for the ``bounded excursion" gravastars is very small in comparison to that of black holes, but not empty. Therefore, although the existence of gravastars cannot be excluded from such dynamical models, our results do indicate that, even if gravastars indeed exist, they do not exclude the existence of black holes.
description: Revtex4, 12 figures. Version published in JCAP, 06 (2008) 025
Deciphering the charged heavy quarkoniumlike states in chiral effective field theory
Creators: name: Wang, Bo
name: Meng, Lu
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We generalize the framework of chiral effective field theory to study the interactions of the isovector $D^\ast\bar{D}^{(\ast)}$ and $B^\ast\bar{B}^{(\ast)}$ systems up to the next-to-leading order, in which the long-, mid-, and short-range force contributions as well as the $S$-$D$ wave mixing are incorporated. Based on the Lippmann-Schwinger equation, we fit the invariant mass distributions of the elastic channels measured by the BESIII and Belle Collaborations. Our results indicate that the four charged charmoniumlike and bottomoniumlike states $Z_c(3900)$, $Z_c(4020)$ and $Z_b(10610)$, $Z_b(10650)$ can be well identified as the $D\bar{D}^{\ast},D^\ast\bar{D}^{\ast}$ and $B\bar{B}^{\ast},B^\ast\bar{B}^{\ast}$ molecular resonances. The bound state explanations are vetoed in our framework. Our study favors the $Z_c$ and $Z_b$ states are the twin partners under the heavy quark symmetry.
description: 6 pages, 3 figures and 1 table
Detector performance of the NEWAGE experiment
Creators: name: Miuchi, Kentaro
name: Hattori, Kaori
name: Kabuki, Shigeto
name: Kubo, Hidetoshi
name: Kurosawa, Shunsuke
name: Nishimura, Hironobu
name: Okada, Yoko
name: Takada, Atsushi
name: Tanimori, Toru
name: Tsuchiya, Ken'ichi
name: Ueno, Kazuki
name: Sekiya, Hiroyuki
name: Takeda, Atsushi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: NEWAGE(NEw generation WIMP search with an Advanced Gaseous tracking device Experiment) project is a direction-sensitive dark matter search experiment with a gaseous micro time-projection-chamber(micro-TPC). We report on the performance of the micro-TPC with a detection volume of 23x28x30 cm3 operated with a carbon-tetra uoride (CF4) of 0.2 bar.
description: 6 pages, 4 figutres, proceedings of IDM 2006
A Novel index-based multidimensional data organization model that enhances the predictability of the machine learning algorithms
Creators: name: Rahman, Mahbubur
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Learning from the multidimensional data has been an interesting concept in the field of machine learning. However, such learning can be difficult, complex, expensive because of expensive data processing, manipulations as the number of dimension increases. As a result, we have introduced an ordered index-based data organization model as the ordered data set provides easy and efficient access than the unordered one and finally, such organization can improve the learning. The ordering maps the multidimensional dataset in the reduced space and ensures that the information associated with the learning can be retrieved back and forth efficiently. We have found that such multidimensional data storage can enhance the predictability for both the unsupervised and supervised machine learning algorithms.
Learning about the reduction of food waste using Blockchain technology
Creators: name: Marin, Monica-Paula
name: Marin, Iuliana
name: Vidu, Livia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Farmers need to be efficient and dedicate a lot of time in order to sustain the quality of their animals which are in their care. The most convenient and good quality - price ratio should be chosen for the feed of animals. Blockchain is used in a virtual space to store and share information over a network of users. This is done using the open source Hyperledger Fabric platform. The transactions can be viewed by all the other users in real time. These transactions are stored as JSONs inside CouchDB NoSQL database which supports queries on a large volume of data. When using this technology, the farmer can know with whom the supplier for animal feed collaborated with. The history of the transactions are not saved in just one place. In this way, it is more difficult to hack and provide implausible information. An e-learning platform was created where the farm's user can post information, respectively new blocks about the animal's birth, vaccinations, medicines, including the location of the livestock. The same e-learning platform is accessible from the mobile phone. By using the blockchain technology, anyone, including the client from the shop can know a lot about the origin of the products. Fake origins of food are much more difficult to hide. Fraud is also limited. The system monitored the traceability of dairy products inside a Romanian farm. Data about fodder provider and quality, cow productive performances and health and dairy products process were obtained and analyzed by students who will become specialists at all the levels of the food chain. Blockchain is the technology which in case of a dairy products contamination, the origin of the farm is traced in just a couple of seconds. In this way just a batch of dairy products is removed from distribution, leading to the reduction of food waste.
Interacting Holographic Phantom
Creators: name: Setare, M R
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we consider the holographic model of interacting dark energy in non-flat universe. With the choice of $c\leq 0.84$, the interacting holographic dark energy can be described by a phantom scalar field. Then we show this phantomic description of the holographic dark energy with $c\leq 0.84$ and reconstruct the potential of the phantom scalar field.
description: 15 pages, no figures, text extended, references added
Motion-Encoded Particle Swarm Optimization for Moving Target Search Using UAVs
Creators: name: Phung, Manh Duong
name: Ha, Quang Phuc
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: This paper presents a novel algorithm named the motion-encoded particle swarm optimization (MPSO) for finding a moving target with unmanned aerial vehicles (UAVs). From the Bayesian theory, the search problem can be converted to the optimization of a cost function that represents the probability of detecting the target. Here, the proposed MPSO is developed to solve that problem by encoding the search trajectory as a series of UAV motion paths evolving over the generation of particles in a PSO algorithm. This motion-encoded approach allows for preserving important properties of the swarm including the cognitive and social coherence, and thus resulting in better solutions. Results from extensive simulations with existing methods show that the proposed MPSO improves the detection performance by 24\% and time performance by 4.71 times compared to the original PSO, and moreover, also outperforms other state-of-the-art metaheuristic optimization algorithms including the artificial bee colony (ABC), ant colony optimization (ACO), genetic algorithm (GA), differential evolution (DE), and tree-seed algorithm (TSA) in most search scenarios. Experiments have been conducted with real UAVs in searching for a dynamic target in different scenarios to demonstrate MPSO merits in a practical application.
description: Applied Soft Computing, 2020
Dodecahedral topology fails to explain quadrupole-octupole alignment
Creators: name: Weeks, Jeff
name: Gundermann, Jesper
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The CMB quadrupole and octupole, as well as being weaker than expected, align suspiciously well with each other. Non-trivial spatial topology can explain the weakness. Might it also explain the alignment? The answer, at least in the case of the Poincare dodecahedral space, is a resounding no.
description: 5 pages, 1 figure
title: Διαχείριση Κατανεμημένων Συστημάτων με Έμφαση στην Εκτέλεση Επιχειρησιακών Διεργασιών σε Νέφη Πραγματικού Χρόνου
titleType: AlternativeTitle
title: Management of Distributed Systems Emphasizing on Business Process Enactment in Real-time Clouds
Creators: name: Gogouvitis, Spyridon V.
Publisher: name: National Technological University of Athens
Year: 2014
Subjects: Διαχείριση Επιχειρησιακών Διεργασιών
Κατανεμημένα Συστήματα
Εικονικοποίηση
Νέφη
Συστήματα Πραγματικού Χρόνου
Υπηρεσιοστρεφείς Υποδομές
Επίβλεψη Κατανεμημένων Συστημάτων
Business Process Management
Distributed Systems
Virtualization
Clouds
Real-time Systems
Service Oriented Infrastructures
Monitoring

description: 208 σ.
description: Σκοπός της παρούσης διατριβής είναι η μελέτη των κατανεμημένων περιβαλλόντων Πλέγματος (Grid) και Νέφους (Cloud) και ιδιαιτέρως οι μηχανισμοί ελέγχου και εκτέλεσης ροών εργασίας (workflows) σε εικονικοποιημένα (virtualized) περιβάλλοντα. Ιδιαίτερη σημασία δίνεται στην ανάγκη παροχής εκ μέρους των συστημάτων αυτών εγγυήσεων Ποιότητας Υπηρεσίας ώστε να μπορούν να εκτελεστούν εφαρμογές ελαστικού πραγματικού χρόνου (soft real-time). Για τον λόγο αυτό, αναλύονται οι απαιτήσεις που έχουν οι διαδραστικές εφαρμογές, τα υπάρχοντα συστήματα διαχείρισης ροών εργασίας καθώς και οι δυνατότητες που παρέχουν τα σύγχρονα λειτουργικά συστήματα για εκτέλεση εφαρμογών πραγματικού χρόνου. Στη συνέχεια παρουσιάζεται μία αρχιτεκτονική λύση η οποία μπορεί να παρέχει τις απαιτούμενες υπηρεσίες και μηχανισμούς που επιτρέπουν την μοντελοποίηση και εκτέλεση διαδραστικών εφαρμογών σε κατανεμημένα περιβάλλοντα Νέφους. Η προτεινόμενη λύση επαληθεύεται και αξιολογείται μέσω σειράς πειραμάτων καθώς και μέσω πραγματικών εφαρμογών και παρουσιάζονται τα πλεονεκτήματα. Τέλος, παρουσιάζεται μία λύση για την επίβλεψη κατανεμημένων συστημάτων που εμφανίζει σημαντικές δυνατότητες κλιμάκωσης και συνάθροισης των παρατηρούμενων μετρικών.
description: The aim of this thesis is the study of distributed Grid and Cloud environments and particularly the mechanisms needed to manage and execute business workflows in virtualized environments. Particular attention is given to the QoS guarantees that these systems need to provide in order for soft real-time applications to be deployed, managed and executed. For this reason, the requirements that interactive applications have are analyzed, existing workflow management systems are studied and the real-time offerings of modern operating systems are researched. Following, we present an architectural solution that can provide the necessary services and tools that enable modeling and execution of interactive applications in distributed Cloud environments. The proposed solution is verified and evaluated through a series of experiments as well as through real-life applications and its advantages are presented. Finally, a scalable monitoring solution able to perform aggregation is presented and evaluated.
การจัดการเรียนรู้ตามทฤษฎีคอนสตรัคติวิสต์โดยใช้บทเรียนออนไลน์ วิชาคอมพิวเตอร์กราฟิกสำหรับนักเรียนชั้น มัธยมศึกษาปีที่ 5 โรงเรียนคุรุประชาสรรค์อำเภอสรรคบุรี จังหวัดชัยนาท
Creators: name: ศรัณย์ กระแสร์สินธุ์
Publisher: name: หจก.เลิศศิลป์ สาส์ณ โฮลดิ้ง
Year: 2562
Subjects: บทเรียนออนไลน์, คอมพิวเตอร์กราฟิก, ทฤษฎีคอนสตรัคติวิสต์ (Online lesson, Computer graphic, Constructivist theory)

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 13, 2, 203-214
The dipole form of the quark part of the BFKL kernel
Creators: name: Fadin, Victor S.
name: Fiore, Roberto
name: Papa, Alessandro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The dipole form of the ``Abelian'' part of the massless quark contribution to the BFKL kernel is found in the coordinate representation by direct transfer from the momentum representation where the contribution was calculated before. It coincides with the corresponding part of the quark contribution to the dipole kernel calculated recently by Balitsky and is conformal invariant.
description: 9 pages
Presolar Stardust in Highly Pristine CM Chondrites Asuka 12169 and Asuka 12236
Creators: name: Nittler, Larry R.
name: Alexander, Conel M. O'D.
name: Patzer, Andrea
name: Verdier-Paoletti, Maximilien J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report a NanoSIMS search for presolar grains in the CM chondrites Asuka (A) 12169 and A12236. We found 90 presolar O-rich grains and 25 SiC grains in A12169, giving matrix-normalized abundances of 275 (+55/-50, 1$σ$) ppm or, excluding an unusually large grain, 236 (+37/-34) ppm for O-rich grains and 62 (+15/-12) ppm for SiC grains. For A12236, 18 presolar silicates and 6 SiCs indicate abundances of 58 (+18/-12) and 20 (+12/-8) ppm, respectively. The SiC abundances are in the typical range of primitive chondrites. The abundance of presolar O-rich grains in A12169 is essentially identical to that in CO3.0 Dominion Range 08006, higher than in any other chondrites, while in A12236 it is higher than found in other CMs. These abundances provide further strong support that A12169 and A12236 are the least-altered CMs as indicated by petrographic investigations. The similar abundances, isotopic distributions, silicate/oxide ratio, and grain sizes of the presolar O-rich grains found here to those of presolar grains in highly primitive CO, CR and ungrouped carbonaceous chondrites (CCs) indicate that the CM parent body(ies) accreted a similar population of presolar oxides and silicates in their matrices to those accreted by the parent bodies of the other CC groups. The lower abundances and larger grain sizes seen in some other CMs are thus most likely a result of parent-body alteration and not heterogeneity in nebular precursors. Presolar silicates are unlikely to be present in high abundances in returned samples from asteroids Ryugu and Bennu since remote-sensing data indicate that they have experienced substantial aqueous alteration.
description: Accepted for publication in Meteoritics and Planetary Science (32 pages, 7 figures, 3 tables)
On Harder-Narasimhan reductions for Higgs principal bundles
Creators: name: Dey, Arijit
name: Parthasarathi, R
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: The existence and uniqueness of H-N reduction for the Higgs principal bundles over nonsingular projective variety is shown. We also extend the notion of H-N reduction for (Γ, G)-bundles and ramified G-bundles over a smooth curve.
Triple point fermions in ferroelectric GeTe
Creators: name: Krempaský, Juraj
name: Nicolaï, Laurent
name: Gmitra, Martin
name: Chen, Houke
name: Fanciulli, Mauro
name: Guedes, Eduardo B.
name: Caputo, Marco
name: Radović, Milan
name: Volobuev, V. V.
name: Caha, Ondrej
name: Springholz, Gunther
name: Minár, Jan
name: Dil, J. Hugo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Ferroelectric GeTe is unveiled to exhibit an intriguing multiple non-trivial topology of the electronic band structure due to the existence of triple-point and type-II Weyl fermions, which goes well beyond the giant Rashba spin splitting controlled by external fields as previously reported. Using spin- and angle-resolved photoemission spectroscopy combined with ab initio density functional theory, the unique spin texture around the triple point caused by the crossing of one spin degenerate and two spin-split bands along the ferroelectric crystal axis is derived. This consistently reveals spin winding numbers that are coupled with time reversal symmetry and Lorentz invariance, which are found to be equal for both triple-point pairs in the Brillouin zone. The rich manifold of effects opens up promising perspectives for studying non-trivial phenomena and multi-component fermions in condensed matter systems.
description: 5 pages, 5 figures
การศึกษาความสามารถในการสื่อสารภาษาอังกฤษของนักเรียน ชั้นประถมศึกษาปีที่ 6 จากการจัดการเรียนรู้ตามแนวคิดการใช้สมองเป็นฐาน
Creators: name: พัชรินทร์ สินจะโปะ
Publisher: name: หจก.เลิศศิลป์ สาส์ณ โฮลดิ้ง
Year: 2562
Subjects: ความสามารถในการสื่อสารภาษาอังกฤษ, การจัดการเรียนรู้ตามแนวคิดการใช้สมองเป็นฐาน (English communicative ability, Brain Based Learning)

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 13, 2, 215-224
การศึกษาผลการเรียนรู้ หน่วยการเรียนรู้ การออกแบบและตกแต่งโมเดล และความคิดสร้างสรรค์ ของนักเรียนชั้นมัธยมศึกษาปีที่ 3 โดยการจัดการเรียนรู้แบบการสร้างความรู้ด้วยตนเองโดยการสร้างสรรค์ชิ้นงาน
Creators: name: อมรรัตน์ ทองจันทร์
Publisher: name: หจก.เลิศศิลป์ สาส์ณ โฮลดิ้ง
Year: 2562
Subjects: การจัดการเรียนรู้แบบการสร้างความรู้ด้วยตนเองโดยการสร้างสรรค์ชิ้นงาน, ความสามารถในการสร้างสรรค์ชิ้นงาน, ความคิดสร้างสรรค์ (Constructionism, Ability to create a model, Creative thinking)

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 13, 2, 225-236
Unique solutions to boundary value problems in the cold plasma model
Creators: name: Otway, Thomas H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35M10, 35D30, 82D10

description: The unique existence of a weak solution to the homogeneous closed Dirichlet problem on certain D-star-shaped domains is proven for a mixed elliptic-hyperbolic equation. Equations of this kind arise in models for electromagnetic wave propagation in cold plasma. A related class of open boundary value problems is shown to possess strong solutions.
description: 26 pages
Spatial and temporal variability of the stream water chemistry of an alpine/sub-alpine catchment in the Coast Mountains of British Columbia
Creators: name: Laudon, Hjalmar
Publisher: name: University of British Columbia
Year: 2009

description: The focus of this study is the hydrochemical variability of runoff events in two nested alpine/sub-alpine basins. More specifically, the aim is to link hydrograph interpretations to results of hydrochemistry during rain storms in order to understand better short term hydrochemical fluxes and variability in solute sources. Hydrograph separation was undertaken by using four hydrological tracers; electrical conductivity, concentration of silica, and the stable environmental isotopes oxygen-18 and deuterium. The different methods predicted consistent high pre-storm water contribution for the lower station at peak flow (60%-90%) but less consistent results were found at the upper basin outlet (25%-90%). The chemical characteristics of the stream water have been analyzed using three different approaches, namely; statistical, mass balance, and thermodynamic. Linear correlation was used to investigate the statistical association between discharge and the individual chemical species. The mass balance approach was used to correlate stoichiometry of the bedrock mineralogy to dissolved constituents in the stream water. Finally, a thermodynamic technique was used to evaluate to what extent the stream water could be represented as an equilibrium system and how this changed over the course of the storm. The results from these methods showed that the stream water variability was caused almost entirely by dilution from rain water input.
Strategic Points in Aquaponics
Creators: name: Junge, Ranka
name: König, Bettina
name: Villarroel, Morris
name: Komives, Tamas
name: Jijakli, M.
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: aquaponics
subject: challenges
subject: bacteria
subject: sustainability
subject: 630 Landwirtschaft und verwandte Bereiche

description: Global environmental, social and economic challenges drive the need for new and improved solutions for food production and consumption. Food production within a sustainability corridor requires innovations exceeding traditional paradigms, acknowledging the complexity arising from sustainability. However, there is a lack of knowledge about how to direct further activities, to develop technologies as potential solutions for questions related to climate change, loss of soil fertility and biodiversity, scarcity of resources, and shortage of drinking water. One approach that promises to address these problems is controlled environment agriculture. Aquaponics (AP) combines two technologies: recirculation aquaculture systems (RAS) and hydroponics (plant production in water, without soil) in a closed-loop system. One challenge to the development of this technology is the conversion of the toxic ammonium produced by the fish into nitrate, via bacteria in a biofilter, to provide nitrogen to the plants. However, as this Special Issue shows, there are many other challenges that need to be addressed if the goal of the technology is to contribute to more sustainable food production systems.
A Hybrid Deep Learning Model for Arabic Text Recognition
Creators: name: Fasha, Mohammad
name: Hammo, Bassam
name: Obeid, Nadim
name: Widian, Jabir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Arabic text recognition is a challenging task because of the cursive nature of Arabic writing system, its joint writing scheme, the large number of ligatures and many other challenges. Deep Learning DL models achieved significant progress in numerous domains including computer vision and sequence modelling. This paper presents a model that can recognize Arabic text that was printed using multiple font types including fonts that mimic Arabic handwritten scripts. The proposed model employs a hybrid DL network that can recognize Arabic printed text without the need for character segmentation. The model was tested on a custom dataset comprised of over two million word samples that were generated using 18 different Arabic font types. The objective of the testing process was to assess the model capability in recognizing a diverse set of Arabic fonts representing a varied cursive styles. The model achieved good results in recognizing characters and words and it also achieved promising results in recognizing characters when it was tested on unseen data. The prepared model, the custom datasets and the toolkit for generating similar datasets are made publicly available, these tools can be used to prepare models for recognizing other font types as well as to further extend and enhance the performance of the proposed model.
description: 11 pages
Modelling of the spectra and atmospheres of evolved stars
Creators: name: Pavlenko, Yakiv V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The method and results of the computation of the model atmospheres and spectral energy distributions of chemically peculiar stars, are discussed. The models are computed with a special consideration of the particular problems encountered when computing model atmospheres for M and C-giants, and of hydrogen deficient stars. We present some computed model atmospheres for Sakurai's object, giants of globular clusters, and C-giants.
description: To be published in Memorie della Societa' Astronomica Italiana, as a contributed talk for the VIII Torino Workshop on Nucleosynthesis in AGB Stars "Constraints on AGB Nucleosynthesis from Observations" Granada, 5-10 February 2006
Italian Nationality Law and Second generation immigrants radicalization.pdf
Creators: name: Aissaoui, Mehdi
Publisher: name: figshare
Year: 2021
Subjects: subject: 160602 Citizenship
subject: FOS: Political science
subject: 160510 Public Policy
subject: 160699 Political Science not elsewhere classified
subject: 180114 Human Rights Law
subject: FOS: Law
subject: 220104 Human Rights and Justice Issues
subject: FOS: Philosophy, ethics and religion
subject: 160607 International Relations
subject: 180119 Law and Society

description: Nationality law is generally the juridical instrument of a sovereign state that regulates the rights and obligations of citizens, in addition of defining the ways of acquisition, transmission and loss of the citizenship. The law entails broadly two main principles; Jus Soli (right of soil) is where the citizenship is granted by birthplace, in a sense that a child of immigrant parents born within the territorial jurisdiction of the host state is considered a citizen. Jus Sanguinis (right of blood) on the other hand, is where citizenship is acquired by decent, in a sense that a child inherits it from one or both parents regardless of where he is born. However, the controversy of nationality law lies in its traditional substructure, that is - besides being a juridical instrument that binds the state and citizens with rights and obligations, it also implies a subjective ethnic dimension that encompasses a cultural narrative embodied in a shared language, ideas, ancestry and customs. This ethnic-civic dichotomy gets more complicated when the second-generation immigrants are involved, as they are largely part of the cultural sphere and share several characteristics that constitutes the national identity such as language and culture, in addition that they go through the same socialization with their national age-peers. In this context, the Italian Nationality law has long been subjected to criticism due to its exclusive nature, as it requires demanding conditions that entangle the acquisition of citizenship for the second-generation immigrants. The question that arises is: What is the impact of the Italian Nationality law on the second-generation immigrants’? The first part will put under scrutiny the act 91/1992 of the Italian nationality law, while assessing in the second part its impact on the second-generation immigrants in relation to radicalization.
Nitrous Oxide Emission from Organic Fertilizer and Controlled Release Fertilizer in Tea Fields
Creators: name: Deng, Meihua
name: Hou, Mudan
name: Ohkama-Ohtsu, Naoko
name: Yokoyama, Tadashi
name: Tanaka, Haruo
name: Nakajima, Kenta
name: Omata, Ryosuke
name: Sonoko Bellingrath-Kimura, Dorothea
Publisher: name: Humboldt-Universität zu Berlin
Year: 2017
Subjects: subject: controlled release fertilizer (CRF)
subject: organic fertilizer (ORG)
subject: nitrous oxide
subject: row
subject: canopy
subject: 570 Biowissenschaften; Biologie

description: A field experiment was conducted for two years in the Green Tea Laboratory of Saitama Prefectural Agriculture and Forestry Research Center, Iruma, Saitama, Japan from March 2014 to December 2015. Controlled release fertilizers (CRF) or organic fertilizers (ORG), which are a mixture of chicken manure and oil cake, were applied with the amount of 450 kg·N·ha−1·year−1 in 2014 and 397 kg·N·ha−1·year−1 in 2015. Nitrous oxide (N2O) emissions from soil in green tea fields were measured by the closed chamber method. The results showed that CRF has significantly lower N2O compared to ORG. The cumulative N2O emissions from CRF accounted for 51% of N2O emissions from ORG fields and 138% of control with no fertilizer treatment. The N2O flux from the row was higher than that under the canopy, since fertilizer was applied on the row. However, the total emission from the area between the rows was lower than that under the canopy because the area ratio between the row and canopy was 1:5.
Fully quantum scalable description of driven dissipative lattice models
Creators: name: Deuar, Piotr
name: Ferrier, Alex
name: Matuszewski, Michał
name: Orso, Giuliano
name: Szymańska, Marzena H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Methods for modeling large driven dissipative quantum systems are becoming increasingly urgent due to recent experimental progress in a number of photonic platforms. We demonstrate the positive-P method to be ideal for this purpose across a wide range of parameters, focusing on the archetypal driven dissipative Bose-Hubbard model. Notably, these parameters include intermediate regimes where interactions and dissipation are comparable, and especially cases with low occupations for which common semiclassical approximations can break down. The presence of dissipation can alleviate instabilities in the method that are known to occur for closed systems, allowing the simulation of dynamics up to and including the steady state. Throughout the parameter space of the model, we determine the magnitude of dissipation that is sufficient to make the method useful and stable, finding its region of applicability to be complementary to that of truncated Wigner. We then demonstrate its use in a number of examples with nontrivial quantum correlations, including a demonstration of solving the urgent open problem of large and highly non-uniform systems with even tens of thousands of sites.
description: 17 pages, 14 figures
Comment on "An Improved Experimental Limit on the Electric-Dipole Moment of the Neutron," C.A.Baker et al [hep-ex/0602020]
Creators: name: Lamoreaux, S. K.
name: Golub, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We point out that the rotation of the Earth leads to a non-negligible apparent electric-dipole moment effect for this experiment.
description: 2 pages, no figures The manuscript has been modified (11 Oct 2007) to take into account the initial response from the authors, to shorten the mansuscript, and to clarify the relevance of the effect
Flat Band Quantum Scar
Creators: name: Kuno, Yoshihito
name: Mizoguchi, Tomonari
name: Hatsugai, Yasuhiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that a quantum scar state, an atypical eigenstate breaking eigenstate thermalization hypothesis embedded in a many-body energy spectrum, can be constructed in flat band systems. The key idea of our construction is to make use of orthogonal compact localized states. We concretely discuss our construction scheme, taking a saw-tooth flat lattice system as an example, and numerically demonstrate the presence of a quantum scar state. Examples of higher-dimensional systems are also addressed. Our construction method of quantum scar has broad applications to various flat band systems.
description: 5+2 pages, 3+4 figures
Thermal conduction effects on formation of chromospheric solar tadpole-like jets
Creators: name: Navarro, Anamaría
name: Murawski, F. D. Lora-Clavijo K.
name: Poedts, Stefaan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We measure the effects of non-isotropic thermal conduction on generation of solar chromospheric jets through numerical simulations carried out with the use of one fluid MHD code MAGNUS. Following the work of Srivastava et al. (2018), we consider the atmospheric state with a realistic temperature model and generate the ejection of plasma through a gas pressure driver operating in the top chromosphere. We consider the magnetic field mimicking a flux tube and perform parametric studies by varying the magnetic field strength and the amplitude of the driver. We find that in the case of thermal conduction the triggered jets exhibit a considerably larger energy and mass fluxes and their shapes are more collimated and penetrate more the solar corona than for the ideal MHD equations. Low magnetic fields allow these jets to be more energetic, and larger magnetic fields decrease the enhancement of mass and energy due to the inclusion of the thermal conductivity.
description: 6 Pages, 19 figures. Accepted for publication in Monthly Notices of the Royal Astronomical Society (MNRAS)
Sobolev classes and horizontal energy minimizers between Carnot-Carathéodory spaces
Creators: name: Tan, Kang-Hai
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 58E20; 49N60; 53C22

description: The notion of horizontal energy minimizers between C-C spaces is introduced. We prove existence of such energy minimizers when the domain is a $C^{2}$, noncharacteristic bounded open set in a C-C space and the target is a C-C space of Carnot type.
description: 29 pages
The black hole mass of the $z=2.805$ multiply imaged quasar SDSS J2222+2745 from velocity-resolved time lags of the CIV emission line
Creators: name: Williams, Peter R.
name: Treu, Tommaso
name: Dahle, Håkon
name: Valenti, Stefano
name: Abramson, Louis
name: Barth, Aaron J.
name: Gladders, Michael
name: Horne, Keith
name: Sharon, Keren
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first results of a 4.5 year monitoring campaign of the three bright images of multiply imaged $z=2.805$ quasar SDSS J2222+2745 using the Gemini North Multi-Object Spectrograph (GMOS-N) and the Nordic Optical Telescope (NOT). We take advantage of gravitational time delays to construct light curves surpassing 6 years in duration and achieve average spectroscopic cadence of 10 days during the 8 months of visibility per season. Using multiple secondary calibrators and advanced reduction techniques, we achieve percent-level spectrophotometric precision and carry out an unprecedented reverberation mapping analysis, measuring both integrated and velocity-resolved time lags for CIV. The full line lags the continuum by $τ_{\rm cen} = 36.5^{+2.9}_{-3.9}$ rest-frame days. We combine our measurement with published CIV lags and derive the $r_{\rm BLR}-L$ relationship $\log_{10}( τ/ {\rm day}) = (1.00\pm 0.08) + (0.48\pm 0.04) \log_{10}[λL_λ(1350{Å})/10^{44}~{\rm erg ~s}^{-1}]$ with 0.32$\pm$0.06 dex intrinsic scatter. The velocity-resolved lags are consistent with circular Keplerian orbits, with $τ_{\rm cen} = 86.2^{+4.5}_{-5.0}$, $25^{+11}_{-15}$, and $7.5^{+4.2}_{-3.5}$ rest-frame days for the core, blue wing, and red wing, respectively. Using $σ_{\rm line}$ with the mean spectrum and assuming $\log_{10} (f_{{\rm mean},σ}) = 0.52 \pm 0.26$, we derive $\log_{10}(M_{\rm BH}/M_{\odot}) = 8.63 \pm 0.27$. Given the quality of the data, this system represents a unique benchmark for calibration of $M_{\rm BH}$ estimators at high redshift. Future work will present dynamical modeling of the data to constrain the virial factor $f$ and $M_{\rm BH}$.
description: 21 pages, 16 figures, 3 tables, submitted to ApJ
Twisted Homology
Creators: name: Collinucci, Andres
name: Evslin, Jarah
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: D-branes are classified by twisted K-theory. Yet twisted K-theory is often hard to calculate. We argue that, in the case of a compactification on a simply-connected six manifold, twisted K-theory is isomorphic to a much simpler object, twisted homology. Unlike K-theory, homology can be twisted by a class of any degree and so it classifies not only D-branes but also M-branes. Twisted homology classes correspond to cycles in a certain bundle over spacetime, and branes may decay via Kachru-Pearson-Verlinde transitions only if this cycle is trivial. We provide a spectral sequence which calculates twisted homology, the kth step treats D(p-2k)-branes ending on Dp-branes.
description: 29 pages, 3 eps figures, added Report-no
Simplified approach to double jumps for fluorescing dipole-dipole interacting atoms
Creators: name: Hannstein, Volker
name: Hegerfeldt, Gerhard C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A simplified scheme for the investigation of cooperative effects in the quantum jump statistics of small numbers of fluorescing atoms and ions in a trap is presented. It allows the analytic treatment of three dipole-dipole interacting four-level systems which model the relevant level scheme of Ba+ ions. For the latter, a huge rate of double and triple jumps was reported in a former experiment and the huge rate was attributed to the dipole-dipole interaction. Our theoretical results show that the effect of the dipole-dipole interaction on these rates is at most 5% and that for the parameter values of the experiment there is practically no effect. Consequently it seems that the dipole-dipole interaction can be ruled out as a possible explanation for the huge rates reported in the experiment.
description: 7 pages, 6 figures, typos corrected, to appear in EPJ D (as highlight paper)
Using evidence to make decisions
Creators: name: Jenkins, Charles
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Bayesian evidence ratios give a very attractive way of comparing models, and being able to quote the odds on a particular model seems a very clear motivation for making a choice. Jeffreys' scale of evidence is often used in the interpretation of evidence ratios. A natural question is, how often will you get it right when you choose on the basis of some threshold value of the evidence ratio? The evidence ratio will be different in different realizations of the data, and its utility can be examined in a Neyman-Pearson like way to see what the trade-offs are between statistical power (the chance of ``getting it right'') versus the false alarm rate, picking the alternative hypothesis when the null is actually true. I will show some simple examples which show that there can be a surprisingly large range for an evidence ratio under different realizations of the data. It seems best not to simply rely on Jeffrey's scale when decisions have to be taken, but also to examine the probability of taking the ``wrong'' decision if some evidence ratio is taken to be decisive. Interestingly, Turing knew this and applied it during WWII, although (like much else) he did not publish it.
description: Published in AIP Conference Proceedings, vol. 1636, no. 1, pp. 106-111. Posting here to enable wider accessibility
Diversity and distribution of macro-invertebrates associated with Anopheles gambiae breeding habitats in selected villages along River Sezibwa, Uganda
Creators: name: Onen, Hudson
name: R Odong
name: M Chemurot
name: J Kayondo
Publisher: name: AAS Open Research
Year: 2019

description: Objective
To determine the diversity, abundance and association of An. gambiae s.l. larval densities with abundance of macro-invertebrates across habitat types.

Methods
Potential breeding habitats were identified and categorized followed by selection of two sampling sites and measurement of its area (m²) division into four quadrats. Two quadrats were considered for sampling. Samples were collected, sieved, sorted and preserved in 15 ml falcon tube containing 4 ml of 80% ethanol and identified to family and counted.

Results

A total of 13,427 specimens belonging to eighteen families of macro-invertebrates and 816 An. gambiae s.l. were collected. Ponds had the highest diversity of macro-invertebrates. The dominant macro-invertebrate in each habitat were: predacious diving beetles in ponds; mayflies in streams; culex. in temporary pools; and ground beetles in roadside ditches. An. gambiae s.l. larval densities negatively associated with the abundance of may-flies, dragonflies , water striders , midges , and crawling water beetles in ponds. In streams, An. gambiae larval densities negatively associated with abundance of damselflies and backswimmers while in temporary pools it negatively associated with Baetidae and positively with midge and culex. Carabidae negatively associated with An. gambiae larval densities in roadside ditches.
Conclusions: Studies should investigate mechanisms of interaction leading to population reduction of An. gambiae s.l.
Anti-inflammatory and Quinone Reductase-Inducing Compounds from Beilschmiedia mannii
Creators: name: A. R. C Ahoua
name: A. Monteillier
name: F. Borlat
name: O. Ciclet
name: L. Marcourt
name: S.N Ebrahimi
name: M.W Kone
name: B. Bonfoh
name: P. Christen
name: M. Cuendet
Publisher: name: AAS Open Research
Year: 2019

description: Objectives: Plant species found in the diet of chimpanzees are shown to be potential candidates in the search for new molecules useful in humans. This study aims to identify plants with high anticancer potential for humans
Methods: Seven (7) compounds including two new named desmethoxydihydromethysticin and
beilschmiediapyrone as well as five known alkamides were isolated from Beilschmiedia mannii and evaluated for their cancer chemopreventive potential by using quinone reductase induction and nuclear factor-kappa B inhibition tests in Hepa 1c1c7 and HEK-293/NF-κB-Luc cells, respectively.
Results: Desmethoxydihydromethysticin and beilschmiediapyrone were the most active. The concentrations to double the quinone reductase activity were 7.5 μM for desmethoxydihydromethysticin and 6.1 μM for
beilschmiediapyrone. The compounds inhibited nuclear factor-kappa B with IC50 values of 2.1 and 3.4 μM,
respectively
Conclusions: B. mannii is a promising plant for cancer chemoprention since it’s consumed by the local
population.
Flow Equations for the BCS-BEC Crossover
Creators: name: Diehl, S.
name: Gies, H.
name: Pawlowski, J. M.
name: Wetterich, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The functional renormalisation group is used for the BCS-BEC crossover in gases of ultracold fermionic atoms. In a simple truncation, we see how universality and an effective theory with composite bosonic di-atom states emerge. We obtain a unified picture of the whole phase diagram. The flow reflects different effective physics at different scales. In the BEC limit as well as near the critical temperature, it describes an interacting bosonic theory.
description: 4 pages, 4 figures