cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
String-inspired BCJ numerators for one-loop MHV amplitudes
Creators: name: He, Song
name: Monteiro, Ricardo
name: Schlotterer, Oliver
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find simple expressions for the kinematic numerators of one-loop MHV amplitudes in maximally supersymmetric Yang-Mills theory and supergravity, for any multiplicity. The gauge theory numerators satisfy the Bern-Carrasco-Johansson (BCJ) duality between color and kinematics, so that the gravity numerators are simply the square of the gauge theory ones. The duality holds because the numerators can be written in terms of structure constants of a kinematic algebra, which is familiar from the BCJ organization of self-dual gauge theory and gravity. The close connection that we find between one-loop amplitudes in the self-dual case and in the maximally supersymmetric case is the converse to the dimension-shifting formula. The starting point for arriving at our expressions is the dimensional reduction of ten-dimensional amplitudes obtained in the field-theory limit of open superstrings.
description: 31+12 pages, 7 figures. v2: minor corrections, published version
Assessment of Employee Engagement Practices in the Service Sector - A study in Mangaluru city of Karnataka
Creators: name: V. T. Shailashri
Publisher: name: Zenodo
Year: 2019
Subjects: Employee Engagement, Assessment of Employee Engagement Practices

description: Under the guidance of
 Dr. Sureka Shenoy, M.Com, Ph.D., Professor,
 Srinivas Institute of Management Studies,
 Dr. P. S. Aithal, Ph.D., Post Doc.
 Professor,
 College of Management and Commerce,
 Pandeshwar, Mangaluru -575001
 Srinivas University, Mangaluru-575001
Consistent eccentricities for gravitational wave astronomy: Resolving discrepancies between astrophysical simulations and waveform models
Creators: name: Vijaykumar, Aditya
name: Hanselman, Alexandra G.
name: Zevin, Michael
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Detecting imprints of orbital eccentricity in GW signals promises to shed light on the formation mechanisms of binary black holes. To constrain formation mechanisms, distributions of eccentricity derived from numerical simulations of astrophysical formation channels are compared to the estimates of eccentricity inferred from GW signals. We report that the definition of eccentricity typically used in astrophysical simulations is inconsistent with the one used while modeling GW signals, with the differences mainly arising due to the choice of reference frequency used in both cases. We also posit a prescription for calculating eccentricity from astrophysical simulations by evolving ordinary differential equations obtained from post-Newtonian theory, and using the dominant ($\ell = m =2$) mode's frequency as the reference frequency; this ensures consistency in the definitions. On comparing the existing eccentricities of binaries present in the Cluster Monte Carlo catalog of globular cluster simulations with the eccentricities calculated using the prescription presented here, we find a significant discrepancy at $e \gtrsim 0.2$; this discrepancy becomes worse with increasing eccentricity. We note the implications this discrepancy has for existing studies, and recommend that care be taken when comparing data-driven constraints on eccentricity to expectations from astrophysical formation channels.
description: 15 pages, 7 figures. Code at https://github.com/adivijaykumar/standard-eccentricity-scripts, and data release at https://zenodo.org/records/10633005
Adriano Prosperi, "Infanticide, Secular Justice, and Religious Debate in Early Modern Europe", Turnhout, Brepols, 2016
Creators: name: Alfieri, Fernanda
Publisher: name: Cromohs - Cyber Review of Modern Historiography
Year: 2017

description: Cromohs - Cyber Review of Modern Historiography, Vol 20 (2015-2016)
BPS Monopole in the Space of Boundary Conditions
Creators: name: Ohya, Satoshi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The space of all possible boundary conditions that respect self-adjointness of Hamiltonian operator is known to be given by the group manifold $U(2)$ in one-dimensional quantum mechanics. In this paper we study non-Abelian Berry's connections in the space of boundary conditions in a simple quantum mechanical system. We consider a system for a free spinless particle on a circle with two point-like interactions described by the $U(2) \times U(2)$ family of boundary conditions. We show that, for a certain $SU(2) \subset U(2) \times U(2)$ subfamily of boundary conditions, all the energy levels become doubly-degenerate thanks to the so-called higher-derivative supersymmetry, and non-Abelian Berry's connection in the ground-state sector is given by the Bogomolny-Prasad-Sommerfield (BPS) monopole of $SU(2)$ Yang-Mills-Higgs theory. We also show that, in the ground-state sector of this quantum mechanical model, matrix elements of position operator give the adjoint Higgs field that satisfies the BPS equation. It is also discussed that Berry's connections in the excited-state sectors are given by non-BPS 't Hooft-Polyakov monopoles.
description: 13 pages, 4 eepic figures; minor corrections
A Note on Trans-Planckian Tail Effects
Creators: name: Graef, L. L.
name: Brandenberger, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the proposal by Mersini et al. that the observed dark energy might be explained by the back-reaction of the set of tail modes in a theory with a dispersion relation in which the mode frequency decays exponentially in the trans-Planckian regime. The matter tail modes are frozen out, however they induce metric fluctuations. The energy-momentum tensor with which the tail modes effect the background geometry obtains contributions from both metric and matter fluctuations. We calculate the equation of state induced by the tail modes taking into account the gravitational contribution. We find that, in contrast to the case of frozen super-Hubble cosmological fluctuations, in this case the matter perturbations dominate, and they yield an equation of state which to leading order takes the form of a positive cosmological constant.
description: 5 pages
ASSESSMENT OF THE 3D DEVIATION IN IMPLANT PLACEMENT USING COMPUTER-GUIDED SURGERY
Creators: name: Zafrin, Syeda
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: This study describes a clinical trial involving twenty-four subjects recruited at the Adams School of Dentistry, University of North Carolina at Chapel Hill. The aim of this study was to evaluate the clinical outcomes of implant placement using stereolithographic guide. Additionally, to report the mean platform and apical 3D global deviations between virtually planned and clinically achieved implant positions using the CoDiagnostix system. The deviations were subdivided into BL (buccolingual), MD (mesiodistal) and vertical (corono-apical) direction for the dental implants placed using surgical guides. A standardized CBCT scan was obtained for implant planning and fabrication of static stereolithographic guide. Dental implants were placed using the tooth-supported static guides. A second CBCT (small) field was obtained at week-2 (14 days) post-surgery to evaluate implant position and to compare with the initial CBCT planning. The postoperative positions of the dental implants were superimposed with preoperative planning completed on coDiagnostiX software to calculate implant deviations.      The result of this study demonstrated mean 3D global deviations between planned and postoperative implant positions to be 1.6 mm at the platform point and, 1.8 mm at the apical point, and 3.1° in angulation. There were no damage-related complications in any critical anatomy. Computer-aided planning and manufacturing static stereolithographic guides in accordance with CBCT images may help clinicians in the placement of dental implants.
(102618) Israerl Harris Lary
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Cristina Cassina, "Soglie nel tempo. Storie di prefazioni ai classici del pensiero politico moderno", Soveria Mannelli, Rubbettino, 2015
Creators: name: Panichi, Alessio
Publisher: name: Cromohs - Cyber Review of Modern Historiography
Year: 2017

description: Cromohs - Cyber Review of Modern Historiography, Vol 20 (2015-2016)
A three-dimensional hydrodynamical line profile analysis of iron lines and barium isotopes in HD140283
Creators: name: Gallagher, A. J.
name: Ludwig, H. -G.
name: Ryan, S. G.
name: Aoki, W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Heavy-elements, i.e. those beyond the iron peak, mostly form via two neutron capture processes: the s- and r-process. Metal-poor stars should contain fewer isotopes that form via the s-process, according to currently accepted theory. It has been shown in several investigations that theory and observation do not agree well, raising questions on the validity of either the methodology or the theory. We analyse the metal-poor star HD140283, for which we have a high quality spectrum. We test whether a 3D LTE stellar atmosphere and spectrum synthesis code permits a more reliable analysis of the iron abundance and barium isotope ratio than a 1D LTE analysis. Using 3D model atmospheres, we examine 91 iron lines of varying strength and formation depth. This provides us with the star's rotational speed. With this, we model the barium isotope ratio by exploiting the hyperfine structure of the singly ionised 4554 resonance line, and study the impact of the uncertainties in the stellar parameters. HD140283's vsini = 1.65 +/- 0.05 km/s. Barium isotopes under the 3D paradigm show a dominant r-process signature as 77 +/- 6 +/- 17% of barium isotopes form via the r-process, where errors represent the assigned random and systematic errors, respectively. We find that 3D LTE fits reproduce iron line profiles better than those in 1D, but do not provide a unique abundance (within the uncertainties). However, we demonstrate that the isotopic ratio is robust against this shortcoming. Our barium isotope result agrees well with currently accepted theory regarding the formation of the heavy-elements during the early Galaxy. The improved fit to the asymmetric iron line profiles suggests that the current state of 3D LTE modelling provides excellent simulations of fluid flows. However, the abundances they provide are not yet self-consistent. This may improve with NLTE considerations and higher resolution models.
description: 16 pages, 10 figures, 5 tables. Accepted for publication in A&A
Data
Creators: name: Barcyte, Dovile
name: Elias, Marek
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310510
subject: Molecular evolution

description: Genomic assemblies of Hydrocytium acuminatum and Gormaniella terricola + mitochondrial genome of Hydrocytium acuminatum + nuclear, mitochondrial and plastid gene alignments
Classification Using Global and Local Mahalanobis Distances
Creators: name: Ghosh, Annesha
name: Ghosh, Anil K.
name: SahaRay, Rita
name: Sarkar, Soham
Publisher: name: arXiv
Year: 2024
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We propose a novel semiparametric classifier based on Mahalanobis distances of an observation from the competing classes. Our tool is a generalized additive model with the logistic link function that uses these distances as features to estimate the posterior probabilities of different classes. While popular parametric classifiers like linear and quadratic discriminant analyses are mainly motivated by the normality of the underlying distributions, the proposed classifier is more flexible and free from such parametric modeling assumptions. Since the densities of elliptic distributions are functions of Mahalanobis distances, this classifier works well when the competing classes are (nearly) elliptic. In such cases, it often outperforms popular nonparametric classifiers, especially when the sample size is small compared to the dimension of the data. To cope with non-elliptic and possibly multimodal distributions, we propose a local version of the Mahalanobis distance. Subsequently, we propose another classifier based on a generalized additive model that uses the local Mahalanobis distances as features. This nonparametric classifier usually performs like the Mahalanobis distance based semiparametric classifier when the underlying distributions are elliptic, but outperforms it for several non-elliptic and multimodal distributions. We also investigate the behaviour of these two classifiers in high dimension, low sample size situations. A thorough numerical study involving several simulated and real datasets demonstrate the usefulness of the proposed classifiers in comparison to many state-of-the-art methods.
(102585) Alfred Herbert Daventry
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Non-Fermi Liquid and Fermi Liquid in Two-Channel Anderson Lattice Model: Theory for Pr$A_2$Al$_{20}$ ($A$=V, Ti) and PrIr$_2$Zn$_{20}$
Creators: name: Tsuruta, Atsushi
name: Miyake, Kazumasa
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically investigate electronic states and physical properties in a two-channel Anderson lattice model to understand the non-Fermi liquid behaviors observed in PrV$_2$Al$_{20}$ and PrIr$_2$Zn$_{20}$ whose ground state of the crystalline electric field for local $f$-electron is the $Γ_3$ non-Kramers doublet of $f^2$-configuration and excited state is the $Γ_7$ Kramers doublet of $f^1$-configuration. We use the expansion from the limit of large degeneracy $N$ of the ground state ($1/N$-expansion), with $N$ being the spin-orbital degeneracy. Inclusion of the self-energy of the conduction electrons up to the order of $O(1/N)$ leads to heavy electron with channel and spin-orbit degeneracies. We find that the electrical resistivity is proportional to temperature $T$ in the limit of $T\to0$ and follows $\sqrt{T}$-law in the wide region of temperature, i.e., $T_x
description: 37 pages, 17 figures
Lost in Translation: A Content Analysis of the Promotional Material of Foreign-Language Films in the United States
Creators: name: Mejía, Ilich Dubail
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: World cinema allows audiences to watch how filmmakers from all over the world portray stories important to them and to their community. This paper studied the traditional marketing, namely film posters and film trailers, of foreign-language films as they are distributed in the United States. Through a content analysis, it examined how official posters and trailers changed in presentation from when they were introduced in the film’s country of origin versus when they were distributed in the United States. The materials of the films studied were those of the films shortlisted by the Academy Awards for their Best International Feature Film category, between 2006 and 2018. Specifically, this research answered how the marketing of foreign films differs between what’s done in their home counties and what strategies are adopted in America and how are cultural elements handled by American distributors when they’re tasked with selling a product that portrays a culture different from where it is to be offered. The study found that marketing material of foreign-language films in the United States reduced dimensions of culture presented, required additional sources to account for its merits, and prioritized violent imagery while glamorizing other darker themes. These findings matter because successfully considering them as future promotional material for this category of films is created, film distributors will avoid promoting xenophobic ideals or inaccurate representations of foreign cultures.
(102586) Arthur George Daventry
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Dynamical 4-D Gauss-Bonnet action from matter-graviton interaction at one-loop
Creators: name: Mandal, Susobhan
name: Shankaranarayanan, S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The occurrence of singularities at the centers of black holes suggests that general relativity (GR), although a highly successful model of gravity and cosmology, is inapplicable. This is due to the breakdown of the equivalence principle. Gauss-Bonnet (GB) action is the simplest extension of GR as it possesses second-order equations of motion and is devoid of ghosts. However, in 4-D, the GB action is topological. Recently, Glavan and Lin proposed a mathematical framework that transforms the 4-D GB gravity theory into a non-topological one. However, it has been argued that without a canonical way to choose 4-D from the higher-dimensional space, such a GB gravity is not well-defined in 4-D. Naturally, there has been much interest in having a systematic procedure for making the 4-D GB term non-topological, such as using the counterterm regularization method in 4-D, regularization with the dimensional derivative, and Kaluza-Klein reduction. The current work takes a step in addressing this issue by demonstrating that the rescaling of the GB coupling $α\rightarrow α/(D - 4)$ arises from the self-energy correction of gravitons in 4-D using \emph{only} the established quantum field theoretic techniques. To keep things transparent, we focus on the linearized theory of gravity coupled with matter fields. By computing the one-loop self-energy correction of gravitons induced by the matter fields, we explicitly provide the origin of the prescription provided by Glavan and Lin. We compare the procedure with other regularization procedures like Kaluza-Klein dimensional reduction and conformal scaling regarding the strong coupling problem. Our work naturally opens a new window to considering 4-D Einstein Gauss-Bonnet gravity as the most straightforward modification to GR.
description: 32 pages, 4 figures, 2 appendices added, added references, version accepted in European Physical Journal Plus, results are unchanged
title: Labour Supply and Firm Size
Creators: name: Shao, Lin
name: Sohail, Faisal
name: Yurdagul, Emircan
Publisher: name: Bank of Canada
Year: 2023

description: Larger firms feature i) longer hours worked, ii) higher wages, and iii) smaller (larger) wage penalties for working long (short) hours. We reconcile these patterns in a general equilibrium model, which features the endogenous interaction of hours, wages, and firm size. In the model, workers willing to work longer hours sort into larger firms that offer a wage premium. Complementarities in hours worked generate wage penalties that increase with the distance from the average firm hours. We use the model to argue about the importance of the interaction between hours, wages, and firm size on inequality.
description: Les grandes entreprises se caractérisent par i) des heures travaillées plus longues, ii) des salaires plus élevés et iii) des désavantages salariaux moins (plus) importants pour les heures de travail plus longues (courtes). Nous concilions ces tendances dans un modèle d’équilibre général intégrant l’interaction endogène entre heures, salaires et taille des entreprises. Dans ce modèle, les travailleurs désireux de faire plus d’heures s’orientent vers les grandes entreprises qui offrent un avantage salarial. Les complémentarités entre les heures travaillées génèrent des désavantages salariaux qui augmentent avec l’écart par rapport au nombre moyen d’heures travaillées dans l’entreprise. Nous utilisons le modèle pour montrer que l’interaction entre les heures, les salaires et la taille des entreprises a un effet important sur l’inégalité.
Emotion and Plot in Xenophon’s Ephesiaka
Creators: name: Lang, Adlai
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: The ancient Greek novel Ephesiaka contains two long inset narratives, both tales of erotic suffering that mirror the romance of the main story’s protagonists.  This study examines how the inset narratives contribute to an “emotional plot” through the repetition of verbal motifs of emotion, and how the novel’s deliberately simple style characterizes eros through the cumulative alternation of verbal motifs throughout individual episodes. The Ephesiaka’s plot-focused and formulaic style articulates an emotional plot inextricable from the action plot, prioritizing the visible expression of emotions rather than internal states or conflicts. While this style can be considered “paraliterary” because it guides the reader overtly in its description of outward action, the unobtrusive narration provides little value judgement, leading to modern critical disagreement about how the novel characterizes the different forms of eros portrayed in the inset narratives.
Optical evaluation of the shading properties of climbing fern Lygodium japonicum used as thermal buffering green wall plant
Creators: name: Hara, A.
name: Takaichi, H.
name: Murata, Y.
name: Sakata, R.
name: Hara, Y.
name: Iwase, J.
name: Comparini, D.
name: Suzuki, T.
name: Kawano, T.
Publisher: name: Advances in Horticultural Science
Year: 2016

description: Recently, thermal properties of the landscaped rooftops and walls have attracted the interest of researchers because of the potential to minimize energy consumption in urban areas and to aid summer-time thermal control. For this reason the creation of a plant-based shade for walls or above buildings is highly important. In this paper we evaluate using Lygodium japonicum, one of the many ferns and fern allies traditionally used in Japanese gardening, as a component of thermal-buffering green walls. Lygodium japonicum, the only climbing fern species in Japan, is fast-growing, adheres easily to walls and has a climbing nature. A simple thermal analysis of the sun-shading effect of Lygodium canopy suggested that local surface temperature above the ceramic tiles placed on the rooftop of a building can be buffered (lowered in daytime and maintained relatively warm at night) by the presence of leafy climbing ferns covering the tiles, possibly due to the reflection and absorbance of solar radiation. Furthermore, the presence of the plants may also slow the night-time release of heat from the building surface. Because plants installed on tall walls or on the tops of buildings are not easily accessed for manual care, we performed a real-time routine monitoring and control of plant growth status using various optical sensors that could be automated and monitored remotely for large-scale applications. For this purpose, the optical properties of a Lygodium canopy under solar incident light have been determined. In order to evaluate the natural shading and growing properties of a green canopy, the incident solar radiation spectrum (J), leaf canopy-filtered light spectrum (transmittance, T) and leaf-reflectivity spectrum ® were measured. By reading the reflectivity spectrum, concomitant chlorophyll fluorescence signals (F) from Lygodium leaves were also detected at 760 nm, which corresponds to the O2-A Fraunhofer line. Our data suggests that the daily change in photosynthetic status (P) can be traced by monitoring the change in relative F in relation to the estimated heat loss (H) and measured J, R, and T using a series of practical equations designed to roughly estimate the gross photosynthetic response within the plant canopy. Using our equations, the photosynthetic capacity in the plant canopy structure could be simply simulated and predictable by optical sensors.
description: Advances in Horticultural Science, Vol 30 No 2 (2016)
(102595) Norman Esmond Houghton
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Some characteristics of tuberose as affected by pre-harvest application of calcium chloride and gibberillic acid
Creators: name: Mortazavi, S.N.
name: Bagheri, F.
name: Bahadoran, M.
Publisher: name: Advances in Horticultural Science
Year: 2016

description: In the present study the effect of gibberellic acid (GA3) and calcium chloride (CaCl2) sprays (0, 150, 300 and 450 ml L-1), applied 25 and 15 days before harvesting, on physiological and morphological characteristics of tuberose ‘Pearl Double’ was studied. Cut flowers were harvested and transported to the laboratory where they were placed in distilled water. The experiment considered some parameters for evaluation, such as relative water content of leaves and petals, water intake, percentage of open florets, electrolyte leakage, ethylene production, chlorophyll and carotenoid content. Results indicate that the best treatment was the combination of 150 ml L-1CaCl2 and 450 ml L-1GA3 for most of parameters
description: Advances in Horticultural Science, Vol 30 No 2 (2016)
Edge states, spin transport and impurity induced local density of states in spin-orbit coupled graphene
Creators: name: Seshadri, Ranjani
name: Sengupta, K.
name: Sen, Diptiman
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study graphene which has both spin-orbit coupling (SOC), taken to be of the Kane-Mele form, and a Zeeman field induced due to proximity to a ferromagnetic material. We show that a zigzag interface of graphene having SOC with its pristine counterpart hosts robust chiral edge modes in spite of the gapless nature of the pristine graphene; such modes do not occur for armchair interfaces. Next we study the change in the local density of states (LDOS) due to the presence of an impurity in graphene with SOC and Zeeman field, and demonstrate that the Fourier transform of the LDOS close to the Dirac points can act as a measure of the strength of the spin-orbit coupling; in addition, for a specific distribution of impurity atoms, the LDOS is controlled by a destructive interference effect of graphene electrons which is a direct consequence of their Dirac nature. Finally, we study transport across junctions which separates spin-orbit coupled graphene with Kane-Mele and Rashba terms from pristine graphene both in the presence and absence of a Zeeman field. We demonstrate that such junctions are generally spin active, namely, they can rotate the spin so that an incident electron which is spin polarized along some direction has a finite probability of being transmitted with the opposite spin. This leads to a finite, electrically controllable, spin current in such graphene junctions. We discuss possible experiments which can probe our theoretical predictions.
description: 21 pages, 19 figures; added some discussion and references; this is the final published version
Photo-oxidation of ethylene over mesoporous Tio2/Sio2 catalysts
Creators: name: Liciulli, A.
name: Nisi, R.
name: Pal, S.
name: Laera, A.M.
name: Creti, P.
name: Chiechi, A.
Publisher: name: Advances in Horticultural Science
Year: 2016

description: Mesoporous TiO2/SiO2 catalysts were prepared in order to increase the post-harvest life of climacteric fruits and vegetables reducing ethylene concentration by photo-oxidation. TiO2/SiO2 powders were synthesized by sol-gel method using titanium isopropoxide Ti(OiPr)4 and tetraethoxysilane Si(OC2H5)4 as source of metal oxides. Mesoporous SiO2 framework was used as catalyst support of nanostructured TiO2 to enhance the photocatalytic efficiency. Different TiO2/SiO2 molar ratios were prepared through sol-gel process. A liquid-crystal template route allowed to obtain the mesoporous silica structure, and contemporary TiO2 insertion in the silica framework. The X-ray diffraction (XRD) analysis demonstrated that silica insertion in TiO2 framework inhibits the anatase to rutile phase transformation at higher sintering temperature. The photocatalytic efficiency of the catalysts was measured by the photo-oxidation of ethylene gas under UV light irradiation. Complete photo-oxidation of ethylene was observed after 24 h of reaction time. Results show that the silica framework increases the surface area of the composites and make crystalline anatase phase more stable at higher temperature.
description: Advances in Horticultural Science, Vol 30 No 2 (2016)
Carlo Fontanelli a Ubaldino Peruzzi (24 dicembre 1887)
Creators: name: Fontanelli Carlo
name: Peruzzi Ubaldino
Publisher: name: Zenodo
Year: 2023
Subjects: Accademia dei Georgofili
Fontanelli, Carlo
Peruzzi, Ubaldino
Lettera
Letter
Carteggio
Correspondence
1887

description: Lettera di Carlo Fontanelli a Ubaldino Peruzzi del 24 dicembre 1887. Segnatura dell’unità documentale: Archivio storico dell’Accademia dei Georgofili, Carteggio amministrativo, Busta 48, 1141. Natura: manoscritto. Consistenza: c. 1
description: Digitalizzato come parte della Mostra virtuale: Ubaldino Peruzzi : un percorso in rete : in occasione del bicentenario della nascita https://www.georgofili.it/contenuti/ubaldino-peruzzi-un-percorso-in-rete/17485
Influence of organics, inorganic and biofertilizers on growth, fruit quality, and soil characters of Himsagar mango grown in new alluvial zone of west Bengala, india
Creators: name: Dutta, P.
name: Das, K.
name: Patel, A.
Publisher: name: Advances in Horticultural Science
Year: 2016

description: A field study with organic manures, inorganic manures and biofertilizers alone and in combination was carried out on 11-year-old mango (Mangifera indica L.) cv. Himsagar spaced 10 m apart in a randomized block design at the University Research Station, Gayeshpur, BCKV, West Bengal, India. The objective was to determine their effect on growth, soil characters, and fruit quality of mango grown in a new alluvial zone of West Bengal. Respiration, physiological loss in weight (PLW) and shelf life at ambient room temperatures, and soil characters were also assessed. Results revealed that among the eight treatments, biofertiliser (Azotobacter + PSM) along with 50% inorganic fertilizer significantly increased the growth characters of mango trees. This treatment also increased the physico-chemical character of fruit while biofertilizers alone improved the fruit quality, viz. total soluble solids, total sugar and β-carotene. Fruits treated with biofertilizers also had increased shelf life with lower PLW and respiration rate. Soil microbial population and other soil characters were improved by application of biofertilizer as well. It is concluded that biofertilizer application in mango gives better growth, fruit quality, and soil health.
description: Advances in Horticultural Science, Vol 30 No 2 (2016)
(102550) John Ernest Agar King
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Kentucky bluegrass (Poa pratensis L.) silicon-treated turfgrass tolerance to short- and long-term salinity condition
Creators: name: Esmaeili, S.
name: Salehi, H.
Publisher: name: Advances in Horticultural Science
Year: 2016

description: The effects of short- and long-term salinity condition were investigated on silicon-treated and control plants of Kentucky bluegrass (KBG) (Poa pratensis L.) in a greenhouse study. Salt stress solely affected visual quality at ≥15 dS m-1 concentrations while Si application increased salt tolerance of KBG after 45 days. In long-term salinity stress, Si had no effect on salt tolerance of KBG at ≥15 dS m-1 concentration. Si increased morphological parameters including height and number of shoots, and physiological parameters including relative water content (RWC) and chlorophyll content of leaves. In addition, fresh and dry weights of roots and shoots in response to high salt concentrations declined, but showed an increase with Si treatment. Proline content and electrolyte leakage (EL) increased under high salinity levels. In response to the Si treatment, Na concentration in the shoots significantly decreased at the 5 dS m-1 salinity level. With increasing salinity levels, the concentration of K in roots and shoots decreased while the amount of K in both Si-treated roots and shoots reduced. Overall, Si alleviative effects were more pronounced in 45 days after turfgrasses being salinity treated.
description: Advances in Horticultural Science, Vol 30 No 2 (2016)
On the non-realizability of braid groups by diffeomorphisms
Creators: name: Salter, Nick
name: Tshishiku, Bena
Publisher: name: arXiv
Year: 2015
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: For every compact surface $S$ of finite type (possibly with boundary components but without punctures), we show that when $n$ is sufficiently large there is no lift $σ$ of the surface braid group $B_n(S)$ to $\operatorname{Diff}(S,n)$, the group of $C^1$ diffeomorphisms preserving $n$ marked points and restricting to the identity on the boundary. Our methods are applied to give a new proof of Morita's non-lifting theorem in the best possible range. These techniques extend to the more general setting of spaces of codimension-$2$ embeddings, and we obtain corresponding results for spherical motion groups, including the string motion group.
description: This version incorporates a number of improvements as suggested by an anonymous referee. Of primary interest among this is the inclusion of a new proof of the Morita non-lifting theorem for $C^1$ diffeomorphisms for all $g\ge 2$
Missed Nursing Care and Clinical Decision Support: Can Electronic Nursing Worklist Reminders Help Reduce This Quality and Patient Safety Concern?
Creators: name: Woodard, Amber
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Missed nursing care results in poor patient and organizational outcomes. Ambulation is one of the most frequently reported types of missed nursing care and has been linked to increased inpatient falls, additional hospitalization costs, and a longer average length of stay. The need for nurses to prioritize care in the presence of inadequate staffing, task complexity, time pressure, and interruptions may be a contributing factor to missed nursing care, yet there has been inattention to interventions that support nurse decision-making in the presence of these factors. The purpose of this project was to implement an electronic nursing worklist reminder, a type of clinical decision support, to remind nurses to complete patient ambulation and evaluate the impact of the reminder on missed nursing care specific to ambulation and its documentation, patient falls rates, and nurse perception of missed ambulation and clinical decision support.       Electronic nursing worklist reminders are a form of clinical decision support within the Electronic Health Record that may support nurse decision-making and reduce missed nursing care. An electronic nursing worklist reminder was added to the electronic health record on one general medicine unit to remind nurses to complete patient ambulation. Data on missed ambulation were collected pre- and post-intervention. Patient falls rates were compared and a survey designed to gather demographic data and evaluate RN perception of missed ambulation and clinical decision support was also administered.  Analysis revealed an increase in patient ambulation, indicated by the presence of nursing documentation. There was no significant        difference in patient falls rates. Nurses perceived significantly less missed ambulation on the unit overall, but no significant difference in individual completion of ambulation or perception of clinical decision support. Electronic nursing care reminders can reduce missed nursing care specific to ambulation, and potentially other types of missed nursing care. Patients in the hospital setting who are at risk for functional decline due to missed ambulation may benefit from an electronic nursing worklist reminder that reminds nurses to complete ambulation.
Ultrastructural changes in potato (Solanum tuberosum) under NaCl mediated salinity stress in vitro
Creators: name: Al-Safadi, B.
name: Nakar, M.
Publisher: name: Advances in Horticultural Science
Year: 2016

description: Histological analysis was employed to investigate the way potato plants (Solanum tuberosum cv. Draga and Spunta) face salinity stress. Different concentrations of NaCl (50, 100, 150, 200 and 250 mM) were used on potato plantlets growing in vitro to simulate salinity stress condition. Potato plants treated with 50 and 100 mM concentrations of NaCl went into the osmotic stage, and responded with changes: the flavone naringin was created and accumulated in the cells of the aerial parts, and a different type of trichome was observed, in addition to the original types, in potato plants treated with concentration 100 mM. This new type of trichome appeared similar to type B trichomes therefore they were called "type B-like trichomes". While no substance was exudated from these trichomes in cv. Draga, the trichomes, in cv. Spunta, green droplets were noted on the glandular vesicle. Furthermore, the non glandular trichomes had some swollen stem cells, and branched ones were also observed. Thanks to these new trichomes, the plants had increased leaf pubescence.
description: Advances in Horticultural Science, Vol 30 No 2 (2016)
New Field Model of Polymer/Nanoparticle Mixture-Realizing Discreteness in the Continuous Description
Creators: name: Li, Hui-shu
name: Zhang, Bo-kai
name: Li, Jian
name: Tian, Wen-de
name: Chen, Kang
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Field-theoretical method is efficient in predicting the assembling structures of polymeric systems. However, for the polymer/nanoparticle mixture, the continuous density description is not suitable to capture the realistic assembly of particles, especially when the size of particle is much larger than the polymer segment. Here, we developed a field-based model, in which the particles are eventually discrete and hence it can overcome the drawbacks of the conventional field descriptions, e.g., inadequate and crude treatment on the polymer-particle interface and the excluded-volume interaction. We applied the model to study the simplest system of nanoparticles immersed in dense homopolymer solution. Our model can address the depletion effect and interfacial interaction in a more delicate way. Insights into the enthalpic and/or entropic origin of the structural variation due to the competition between depletion and interfacial interaction are obtained. New phenomena such as depletion-enhanced bridging aggregation are observed in the case of strong interfacial attraction and large depletion length. This approach is readily extendable to studying more complex polymer-based nanocomposites or biology-related systems, such as dendrimer/drug encapsulation and membrane/particle assembly.
A short-period sub-Earth orbiting Proxima Centauri
Creators: name: Suárez Mascareño, A.
Publisher: name: Zenodo
Year: 2022
Subjects: Exoplanets
Stellar activity
Astrophysics

description: The discovery of a planetary candidate orbiting the habitable zone of our closest neighbor, Proxima Centauri (Gl 551), shook the planetary community as few other discoveries have done in recent years. It not only showed that the nearest star to the Sun could host a planetary system but also that, given the right conditions, it could host a habitable rocky planet. 2020 brought back the attention to Proxima with the announcement of a second planetary candidate in the system, the confirmation of Proxima b, using ESPRESSO, and the suggestion of a third, very low mass. Now, after an intense observational campaign, we can confidently say there’s a third companion with just one quarter of the mass of the Earth. Proxima d is one of the lightest exoplanets known to date. It orbits its parent star at 0.029 AU, with a period of 5.12 days. It’s induced RV semi-amplitude, of just 39 cm/s on a V-mag 11 star, highlights the capabilities of the ESPRESSO spectrograph, installed at the VLT telescope array of the Paranal observatory. The signal has an amplitude that is just 1/5 of the amplitude of the activity-induced radial velocity signal, which shows that, under the right conditions, current techniques can detect planetary signals much smaller than activity signals. The discovery of Proxima d opens the door to the characterization of the population of very low mass planets of the solar neighborhood. It shows that radial velocity studies are now capable of detecting exoplanets with masses similar to the Earth and much smaller.
Effect of H2O2 pretreatment on the response of two seashore paspalum (Paspalum vaginatum Sw.) cultivars (Salam and Seaspray) to cold stress
Creators: name: Soufi, S.
name: Ben Hamed, K.
name: Arbaoui, M.
name: Elbey, N.
name: Rezgui, S.
name: Abdely, C.
name: Bettaeib, T.
Publisher: name: Advances in Horticultural Science
Year: 2016

description: Seashore paspalum is a warm season grass that requires few maintenance inputs. Expanded use of seashore paspalum could play a key role in making recreational sites more sustainable and environmentally. However, one key barrier to widespread Seashore paspalum use is a relative lack of winter hardiness. Under severe stress conditions, the antioxidant capacity may not be sufficient to minimize the harmful effect of oxidative injury. The search for signal molecules that mediate the stress tolerance is an important step in better understanding how plants acclimate to the adverse environment. This study aims to screen the responses of two Paspalum vaginatum cultivars (Salam and Seaspray) to local weather conditions and to study how to enhance its cold tolerance by a foliar pretreatment by hydrogen peroxide at low concentrations of 10 mM under controlled conditions. The current study provides evidence that exogenous H2O2 decreases the endogenous content of H2O2 in the first three days of exposure to cold stress in pretreated ‘Seaspray’ plants. in comparison to their control and pretreated ‘Salam’ which was in concomitant with malondialdehyde (MDA) changes. Indicating that pretreatment with 10 mM H2O2 could improve the tolerance of seashore paspalum to cold stress, especially cultivar Seaspray which showed better response to cold stress compared to ‘Salam’. Exogenous H2O2 could constitute a signaling molecule that significantly increases POD relative density, and decreases MDA and H2O2 content.
description: Advances in Horticultural Science, Vol 30 No 2 (2016)
On the accuracy of commonly used density functional approximations in determining the elastic constants of insulators and semiconductors
Creators: name: Råsander, M.
name: Moram, M. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have performed density functional calculations using a range of local and semi-local as well as hybrid density functional approximations of the structure and elastic constants of 18 semiconductors and insulators. We find that most of the approximations have a very small error in the lattice constants, of the order of 1\%, while the error in the elastic constants and bulk modulus are much larger, at about 10\%. In addition, we find that the error in the elastic constants, $c_{ij}$, are larger compared to the error in the bulk modulus. Depending on the functional and which error estimate that is being used, the difference in the error between the elastic constants and the bulk modulus can be rather large, about a factor of two. According to our study, the overall best performing density functional approximation for determining the structure and elastic properties is the PBEsol, closely followed by the two hybrid functionals PBE0 and HSE, and the AM05 functional.