cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the state space structure of tripartite quantum systems
Creators: name: S, Hari Krishnan
name: Ranjan, Ashish
name: Banik, Manik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: State space structure of tripartite quantum systems is analyzed. In particular, it has been shown that the set of states separable across all the three bipartitions [say $\mathcal{B}^{int}(ABC)$] is a strict subset of the set of states having positive partial transposition (PPT) across the three bipartite cuts [say $\mathcal{P}^{int}(ABC)$] for all the tripartite Hilbert spaces $\mathbb{C}_A^{d_1}\otimes\mathbb{C}_B^{d_2}\otimes\mathbb{C}_C^{d_3}$ with $\min\{d_1,d_2,d_3\}\ge2$. The claim is proved by constructing state belonging to the set $\mathcal{P}^{int}(ABC)$ but not belonging to $\mathcal{B}^{int}(ABC)$. For $(\mathbb{C}^{d})^{\otimes3}$ with $d\ge3$, the construction follows from specific type of multipartite unextendible product bases. However, such a construction is not possible for $(\mathbb{C}^{2})^{\otimes3}$ since for any $n$ the bipartite system $\mathbb{C}^2\otimes\mathbb{C}^n$ cannot have any unextendible product bases [Phys. Rev. Lett. 82, 5385 (1999)]. For the $3$-qubit system we, therefore, come up with a different construction.
description: Comments are welcome
The Sunyaev-Zel'dovich effect and Faraday rotation contributions of galaxy groups to the CMB angular power spectrum
Creators: name: Tashiro, Hiroyuki
name: Silk, Joseph
name: Langer, Mathieu
name: Sugiyama, Naoshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The S-Z effect and Faraday rotation from halos are examined over a wide mass range, an including gas condensation and magnetic field evolution. Contributions to the CMB angular power spectrum are evaluated for galaxy clusters, galaxy groups and galaxies. Smaller mass halos are found to play a more important role than massive halos for the B-mode polarisation associated with the S-Z CMB anisotropies. The B-modes from Faraday rotation dominate the secondary B-modes caused by gravitational lensing at l > 3000. Measurement of B-mode polarisation in combination with the S-Z power spectrum can potentially provide important constraints on intracluster magnetic field and gas evolution at early epochs.
description: submitted to MNRAS
Echoes of the past: ultra-high energy cosmic rays accelerated by radio galaxies, scattered by starburst galaxies
Creators: name: Bell, Anthony
name: Matthews, James
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We explore the possibility that the hotspot of ultrahigh energy cosmic rays (UHECR) detected by the Telescope Array (TA) from the approximate direction of M82 and the M81 group of galaxies might be the echo of UHECR emitted by Centaurus A in an earlier more powerful phase. Echoes from other starburst galaxies or groups of galaxies may contribute to the UHECR flux at the Earth. We use an illustrative Monte Carlo model of mono-energetic UHECR transport by small angle scattering to generate synthetic sky maps. The model informs a discussion of overall energetics and time and distance scales. We find a viable echo model for the observed UHECR hotspots if the UHECR luminosity of Centaurus A 20 Myr ago was 200 times its present luminosity and if the ordered magnetic field exceeds 10-20nG out to a distance of 400-800kpc in the circumgalactic medium of M82 and other starburst galaxies.
description: 9 pages, 8 figures. Accepted 2022 January 4th for publication in MNRAS. Replaces the original submitted version
The Resilient Student-Athlete: Supporting Community and Mental Well-being through On-campus Housing
Creators: name: Wright, Sarah Anne
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: subject: Architecture
subject: FOS: Civil engineering
subject: community
subject: dormitory
subject: student-athlete
subject: university
subject: well-being

description: Young adults who enter their college years as student-athletes face the challenge of balancing their athletic demands with their academic ones, all while transitioning to their future careers as adults. The demand for student-athletes to perform at the highest level possible often begins to push some of them over the edge both physically and mentally. The culture of athletics has not always been supportive of student-athletes with mental illness, therefore, weakening the stigma of mental illness is necessary to encourage student-athletes to begin to seek the help they may truly need. This thesis explores on-campus housing at the University of Maryland (UMD) that encourages community and a supportive environment for the student-athlete and general student population living there. The community spaces and mental health resources better prepare student-athletes in dealing with mental illness and the stressors they face in college. The organization and aesthetics of the built environment encourage wellness in subtle and direct ways, creating an environment that weaves together mental well-being and everyday living without branding it as a place to be “fixed”. As a result, every individual can learn to thrive within their sport and academics and become resilient to the stressors and demands of their college career and beyond.
A nonparametric approach to the estimation of lengths and surface areas
Creators: name: Cuevas, Antonio
name: Fraiman, Ricardo
name: Rodríguez-Casal, Alberto
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G07 (Primary) 62G20 (Secondary)

description: The Minkowski content $L_0(G)$ of a body $G\subset{\mathbb{R}}^d$ represents the boundary length (for $d=2$) or the surface area (for $d=3$) of $G$. A method for estimating $L_0(G)$ is proposed. It relies on a nonparametric estimator based on the information provided by a random sample (taken on a rectangle containing $G$) in which we are able to identify whether every point is inside or outside $G$. Some theoretical properties concerning strong consistency, $L_1$-error and convergence rates are obtained. A practical application to a problem of image analysis in cardiology is discussed in some detail. A brief simulation study is provided.
description: Published at http://dx.doi.org/10.1214/009053606000001532 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Graviton localization and Newton's law for brane models with a non-minimally coupled bulk scalar field
Creators: name: Farakos, K.
name: Koutsoumbas, G.
name: Pasipoularides, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Brane world models with a non-minimally coupled bulk scalar field have been studied recently. In this paper we consider metric fluctuations around an arbitrary gravity-scalar background solution, and we show that the corresponding spectrum includes a localized zero mode which strongly depends on the profile of the background scalar field. For a special class of solutions, with a warp factor of the RS form, we solve the linearized Einstein equations, for a point-like mass source on the brane, by using the brane bending formalism. We see that general relativity on the brane is recovered only if we impose restrictions on the parameter space of the models under consideration.
description: 17 pages, revised version
AN ANALYSIS OF VARIABILITY IN NEWSPAPER REPORTING OF NATIONALLY COVERED TOPICS
Creators: name: Marciano, Fernando Santos
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: subject: Information science
subject: Journalism
subject: data analysis
subject: newspaper reporting
subject: quantitative facts
subject: variability

description: This study looks into variability in newspaper reporting of important national topics. Using a sample of seven hundred articles from ten newspapers, a quantitative analysis using analysis of variance (ANOVA) found that variability in the values of reported numerical facts was statistically significant. Further, a qualitative analysis was performed to identifying potential reasons for the variability. Variability is unique to each topic being covered; however, some follow predictable patterns, such as updates on developing stories.
Kalman-based interacting multiple-model wind speed estimator for wind turbines
Creators: name: Lio, Wai Hou
name: Meng, Fanzhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The use of state estimation technique offers a means of inferring the rotor-effective wind speed based upon solely standard measurements of the turbine. For the ease of design and computational concerns, such estimators are typically built based upon simplified turbine models that characterise the turbine with rigid blades. Large model mismatch, particularly in the power coefficient, could lead to degradation in estimation performance. Therefore, in order to effectively reduce the adverse impact of parameter uncertainties in the estimator model, this paper develops a wind sped estimator based on the concept of interacting multiple-model adaptive estimation. The proposed estimator is composed of a bank of extended Kalman filters and each filter model is developed based on different power coefficient mapping to match the operating turbine parameter. Subsequently, the algorithm combines the wind speed estimates provided by each filter based on their statistical properties. In addition, the proposed estimator not only can infer the rotor-effective wind speed, but also the uncertain system parameters, namely, the power coefficient. Simulation results demonstrate the proposed estimator achieved better improvement in estimating the rotor-effective wind speed and power coefficient compared to the standard Kalman filter approach.
description: 6 pages, 7 figures, Accepted in IFAC World Congress 2020, in Berlin, Germany
A Study of Factors Effecting on Job Satisfaction in South Central Railway Employees
Creators: name: Katta, Ashok Kumar
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 350906
subject: Public transport
classificationCode: 350905
subject: Passenger needs
classificationCode: 350903
subject: Logistics
classificationCode: 350907
subject: Rail transportation and freight services

description: A Study of Factors Effecting on Job Satisfaction in South Central Railway Employees
A synthetic approach to the C/D ring system of steroids
Creators: name: Pendleton, Nevil
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is concerned with an approach to the synthesis of the C/D ring system and side chain of steroids with 11-oxygen functionality. (+)-9,10-Dibromocamphor (18) [prepared in three steps from (+)-endo-3-bromocamphor (4)] was converted to the diester 144 in six steps. The diester 144 underwent a modified acyloin reaction to provide the silylated enediolate 154. A novel methanolysis of the acyloin intermediate 154 gave a 1:1 mixture of the isomeric tricyclic methoxy-ketones 168 and 176. Oxidative cleavage of these methoxyketones 168 [Formula Omitted] and 176 provided the isomeric aldehydes 178 and 180 which were then transformed into the corresponding isomeric esters 181 and 182. This represents a synthesis of the C/D ring system of steroids with 11-oxygen functionality and establishment of the correct absolute stereochemistry at C(13) and C(17). [Formula Omitted]
Building Education: Creating a Flexible Model For Sustainably Developing Communities In Latin America
Creators: name: Nicolich, Ana Maria
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: subject: Architecture
subject: FOS: Civil engineering
subject: Architecture
subject: Education
subject: Latin America
subject: Modular
subject: Peru
subject: School

description: Latin America has a deep-rooted history with issues of poverty. Education is a vital part of the solution. Education and increased literacy can help communities break away from a cycle of poverty by opening doors and creating opportunities for independence. Many impoverished countries in Latin America rely on the cultivation of primary products to sustain their economies. Unfortunately, the high number of illiterate and untrained laborers in these parts of the world halts their progress. These are recurring issues in many underdeveloped countries. Rural communities tend to be deprived of resources and this leads to an exodus of the young as they are looking for opportunities for growth. They leave their villages and don’t always come back having completed a full education. This thesis intends to create a model for an educational facility that can be applied to multiple contexts, with an effort to empower communities through providing education for children to achieve their full potential, and for agricultural workers to heighten their knowledge about the trades that affect their livelihoods directly Research will explore modular design as a means to cater to the diverse contexts with a changing demand and whether a possible model can be self-sustaining. It will also explore how a building can bring a community together. Could a deployable model be effective cross culturally? Can flexible design help mobilize a struggling community? How to create an environment that can be conducive to learning?
La Sfera Challenge Project 1st Edition (September 2020)
Creators: name: Morreale, Laura et al.
Publisher: name: Zenodo
Year: 2021
Subjects: Italian literature, Cosmology, Goro Dati, Crowd-sourcing, Transcription

description: In an effort to confront the social isolation imposed by the global pandemic, this project created limited-term transcription teams to transcribe a different digitized IIIF-compliant manuscript copy of Goro Dati’s La Sfera, a short fifteenth-century text often written in a neat humanist hand and found in manuscript versions in several world-wide repositories. The transcription teams competed to determine which group could transcribe its version of the text most accurately, quickly, and cooperatively. The goals and results of the competition were threefold: 1. to introduce project participants to IIIF and the FromThePage transcription platform, 2. to advertise this methodology to the larger community of scholars who work with manuscripts and 3. to demonstrate how transcribed texts, once complete, may be manipulated in the digital environment.
A triple quantum dot in a single wall carbon nanotube
Creators: name: Grove-Rasmussen, K.
name: Jørgensen, H. I.
name: Hayashi, T.
name: Lindelof, P. E.
name: Fujisawa, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A top-gated single wall carbon nanotube is used to define three coupled quantum dots in series between two electrodes. The additional electron number on each quantum dot is controlled by top-gate voltages allowing for current measurements of single, double and triple quantum dot stability diagrams. Simulations using a capacitor model including tunnel coupling between neighboring dots captures the observed behavior with good agreement. Furthermore, anti-crossings between indirectly coupled levels and higher order cotunneling are discussed.
description: Supporting Information is available at Nano Lett. website (see link below)
Constitutive Modeling of the Magneto-electromechanical Response of Composite Multiferroics Cylinders
Creators: name: Nacy, Somer
name: Youssef, George
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Strain-mediated multiferroic composite structures are gaining scientific and technological attractions because of the promise of low power consumption and greater flexibility in material and geometry choices. In here, the direct magnetoelectric coupling coefficient (DME) of composite multiferroic cylinders, consisted of two mechanically bonded concentric cylinders, was analytically modeled under the influence of a radially emanating magnetic field. The analysis framework emphasized the effects of shear lag and demagnetization on the overall performance. The shear lag effect was analytically proven to have no bearing on the DME since it has no effect on the induced radial displacement due to the conditions imposed on the composite cylinder. The demagnetization effect was also thoroughly considered as a function of the imposed mechanical boundary conditions, geometrical dimensions of the composite cylinder, and the introduction of a thin elastic layer at the interface between the inner piezomagnetic and outer piezoelectric cylinders. The results indicate that the demagnetization effect adversely impacted the DME coefficient between 70% and 86%. In a trial to compensate for the reduction in peak DME coefficient due to the presence of demagnetization, non-dimensional geometrical analysis was carried out to identify the geometrical attributes corresponding to the maximum DME. It was observed that the peak DME coefficient is nearly unaffected by varying the inner radius of the composite cylinder, while it approaches its maximum value when the thickness of the piezoelectric cylinder is almost 60% of the total thickness of the composite cylinder. The latter conclusion was true for all of the considered boundary conditions.
On Understanding the Relation of Knowledge and Confidence to Requirements Quality
Creators: name: Dehghani, Razieh
name: Wnuk, Krzysztof
name: Mendez, Daniel
name: Gorschek, Tony
name: Ramsin, Raman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context and Motivation: Software requirements are affected by the knowledge and confidence of software engineers. Analyzing the interrelated impact of these factors is difficult because of the challenges of assessing knowledge and confidence. Question/Problem: This research aims to draw attention to the need for considering the interrelated effects of confidence and knowledge on requirements quality, which has not been addressed by previous publications. Principal ideas/results: For this purpose, the following steps have been taken: 1) requirements quality was defined based on the instructions provided by the ISO29148:2011 standard, 2) we selected the symptoms of low qualified requirements based on ISO29148:2011, 3) we analyzed five Software Requirements Specification (SRS) documents to find these symptoms, 3) people who have prepared the documents were categorized in four classes to specify the more/less knowledge and confidence they have regarding the symptoms, and 4) finally, the relation of lack of enough knowledge and confidence to symptoms of low quality was investigated. The results revealed that the simultaneous deficiency of confidence and knowledge has more negative effects in comparison with a deficiency of knowledge or confidence. Contribution: In brief, this study has achieved these results: 1) the realization that a combined lack of knowledge and confidence has a larger effect on requirements quality than only one of the two factors, 2) the relation between low qualified requirements and requirements engineers' needs for knowledge and confidence, and 3) variety of requirements engineers' needs for knowledge based on their abilities to make discriminative and consistent decisions.
description: Preprint accepted for publication at the 27th International Working Conference on Requirement Engineering: Foundation for Software Quality
The Optical Gravitational Lensing Experiment. OGLE-III Photometric Maps of the Large Magellanic Cloud
Creators: name: Udalski, A.
name: Soszynski, I.
name: Szymanski, M. K.
name: Kubiak, M.
name: Pietrzynski, G.
name: Wyrzykowski, L.
name: Szewczyk, O.
name: Ulaczyk, K.
name: Poleski, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the OGLE-III Photometric Maps of the Large Magellanic Cloud. They cover about 40 square degrees of the LMC and contain mean, calibrated VI photometry and astrometry of about 35 million stars observed during seven observing seasons of the third phase of the Optical Gravitational Lensing Experiment - OGLE-III. We discuss the quality of data and present color-magnitude diagrams of selected fields. The OGLE-III Photometric Maps of the LMC are available to the astronomical community from the OGLE Internet archive.
description: 8 pages, 9 figures
123
Creators: name: García-Grimshaw, Miguel
Publisher: name: figshare
Year: 2021
Subjects: subject: 110904 Neurology and Neuromuscular Diseases
subject: FOS: Clinical medicine
subject: Health Care
subject: 111716 Preventive Medicine
subject: FOS: Health sciences

description: Iiii
Integral-Field Spectroscopy of the Post Red Supergiant IRC +10420: evidence for an axi-symmetric wind
Creators: name: Davies, Ben
name: Oudmaijer, René D.
name: Sahu, Kailash C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present NAOMI/OASIS adaptive-optics assisted integral-field spectroscopy of the transitional massive hypergiant IRC +10420, an extreme mass-losing star apparently in the process of evolving from a Red Supergiant toward the Wolf-Rayet phase. To investigate the present-day mass-loss geometry of the star, we study the appearance of the line-emission from the inner wind as viewed when reflected off the surrounding nebula. We find that, contrary to previous work, there is strong evidence for wind axi-symmetry, based on the equivalent-width and velocity variations of H$α$ and Fe {\sc ii} $λ$6516. We attribute this behaviour to the appearance of the complex line-profiles when viewed from different angles. We also speculate that the Ti {\sc ii} emission originates in the outer nebula in a region analogous to the Strontium Filament of $η$ Carinae, based on the morphology of the line-emission. Finally, we suggest that the present-day axisymmetric wind of IRC +10420, combined with its continued blueward evolution, is evidence that the star is evolving toward the B[e] supergiant phase.
description: 22 pages, 9 figures, accepted for publication in ApJ. B&W-optimized version can be downloaded from http://www.cis.rit.edu/~bxdpci/pubs.html
The issue of photons in dielectrics: Hamiltonian viewpoint
Creators: name: Antoci, S.
name: Mihich, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The definition of the photon in the vacuum of general relativity provided by Kermack et al. and by Synge is extended to nondispersive, nonhomogeneous, isotropic dielectrics in arbitrary motion by Hamiltonian methods that rely on Gordon's effective metric. By these methods the old dilemma, whether the momentum-energy vector of the photon in dielectrics is timelike or spacelike in character, is shown to reappear under a novel guise.
description: 12 pages, one figure; text to appear in Nuovo Cimento B
Efficient flexible characterization of quantum processors with nested error models
Creators: name: Nielsen, Erik
name: Rudinger, Kenneth
name: Proctor, Timothy
name: Young, Kevin
name: Blume-Kohout, Robin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a simple and powerful technique for finding a good error model for a quantum processor. The technique iteratively tests a nested sequence of models against data obtained from the processor, and keeps track of the best-fit model and its wildcard error (a quantification of the unmodeled error) at each step. Each best-fit model, along with a quantification of its unmodeled error, constitute a characterization of the processor. We explain how quantum processor models can be compared with experimental data and to each other. We demonstrate the technique by using it to characterize a simulated noisy 2-qubit processor.
description: 10 pages, 4 figures
Quantum Feedback Networks: Hamiltonian Formulation
Creators: name: Gough, J.
name: James, M. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum network is an open system consisting of several component Markovian input-output subsystems interconnected by boson field channels carrying quantum stochastic signals. Generalizing the work of Chebotarev and Gregoratti, we formulate the model description by prescribing a candidate Hamiltonian for the network including details the component systems, the field channels, their interconnections, interactions and any time delays arising from the geometry of the network. (We show that the candidate is a symmetric operator and proceed modulo the proof of self-adjointness.) The model is non-Markovian for finite time delays, but in the limit where these delays vanish we recover a Markov model and thereby deduce the rules for introducing feedback into arbitrary quantum networks. The type of feedback considered includes that mediated by the use of beam splitters. We are therefore able to give a system-theoretic approach to introducing connections between quantum mechanical state-based input-output systems, and give a unifying treatment using non-commutative fractional linear, or Mobius, transformations.
description: 27 pages (Final version). to appear Commun. Math. Phys
Status and prospects of the IceCube neutrino telescope
Creators: name: Resconi, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The IceCube neutrino observatory, under construction at the South Pole, consists of three sub-detectors: a km-scale array of digital optical modules deployed deep in the ice, the AMANDA neutrino telescope and the surface array IceTop. We summarize results from searches for cosmic neutrinos with the AMANDA telescope and review expected sensitivities for IceCube at various installation phases. Reliability and robustness of installation at the South Pole has been demonstrated during the past four successful construction seasons. The 40 installed IceCube strings are working well. We are developing detailed plans for the final construction of IceCube, including extensions optimized for low and high energy. We describe the IceCube Deep Core project which will extend the low energy response of IceCube.
description: 8 pages, 10 pictures, proceeding of the International Workshop on a Very Large Volume Neutrino Telescope for the Mediterranean Sea VLVnT08 - Toulon, Var, France, 22-24 April 2008
Analytical applications of X-Ray photoelectron spectroscopy
Creators: name: Chan, Paul Ka-Hang
Publisher: name: University of British Columbia
Year: 2010

description: The surface-specific analytical technique of X-ray photoelectron spectroscopy (XPS) is described, and was used to study various geochemical materials and organic compounds. Variation of surface pyrite density with coal particle size (53-250/µm) in a typical Canadian coal (Minto) provided some interesting data- it is very likely that as coal is crushed, one eventually reaches a particle size where the surface pyrite/carbon ratio maximizes. It is this parameter that is examined here, and correlations were found between (i) surface pyrite concentration,(ii) surface pyrite/sulfate ratio, and (iii) oxidized and non-oxidized sulfur with particle size. This is information which should find useful application in coal cleaning technology. For non-oxidized coal, we find the area of exposed pyrite on the coal surface is approximately inversely proportional to coal particle radius. However, for oxidized coal the appearance of curves depends on the oxidation times, but there is a particle size which exhibits maximum surface pyrite relative to 1/radius, corresponding to the intercept point of the two linear segments (low and higher values of 1/R) for the non-oxidized coal (fig. 3.9), and which is evidently that we will call the "characteristic" size of constituent pyrite. XPS 2p₃/₂ sulfur peaks from major sulfur constituents other than sulfate in sediment recovered from Mahoney Lake (south-central British Columbia, Canada) show a surprisingly periodic variation in sulfur 2p₃/₂ binding energy (BE), and hence molecular structure, with sediment age. The pattern ceases at a core depth of about 3.2 meters, where a major deposit of fine sandy sediment occurs just below ash deposition (2.6m) from a major eruption of Mount Mazama, Oregon, approximately 6500 year ago, which led to the formation of Crater Lake. Sedimental sulfur exists mainly as sulfate; however, there is a pronounced increase in amount of the lower BE sulfur species relative to sulfate toward lower depths. The "reduced" species also shows a trend towards slightly higher oxidation level at lower depths. We are able to suggest the probable chemical forms in which the sulfur species exist, which is of interest to biologists working on sulfur transformation studies in lakes. BE' s for nitrogen Is and sulfur 2p₃/₂ in the metal chelates of dibenzyldithiocarbamic acid M(DBDTC)n for n=2, M=Cu(II) and Zn(II), and for n=3, M=Bi(III), have been measured. The nature of the spectral peaks and core BE's indicates that the nitrogen atom in the DBDTC is not intramolecularly bound with the metal as had been previously suggested. The relatively high BE's for the nitrogen Is orbitals indicate planar geometry for the coordinated ligands, and the form [formula omitted] to reasonably represent their structure, which agrees with previous infrared studies.
Axisymmetric orbit models of N-body merger remnants: a dependency of reconstructed mass on viewing angle
Creators: name: Thomas, J.
name: Jesseit, R.
name: Naab, T.
name: Saglia, R. P.
name: Burkert, A.
name: Bender, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We model mock observations of collisionless N-body disc-disc mergers with an axisymmetric orbit superposition program that has been used to model Coma ellipticals. The remnants sample representatively the shapes of disc-disc mergers including prolate, triaxial and oblate objects. The aim is to better understand how the assumption of axial symmetry affects reconstructed masses and stellar motions of systems which are intrinsically not axisymmetric, whether it leads to a bias and how such a potential bias can be recognised in models of real galaxies. The mass recovery at the half-light radius depends on viewing-angle and intrinsic shape: edge-on views allow to reconstruct total masses with an accuracy between 20% (triaxial/prolate remnants) and 3% (oblate remnant). Masses of highly flattened, face-on systems are underestimated by up to 50%. Deviations in local mass densities can be larger where remnants are strongly triaxial or prolate. Luminous M/L are sensitive to box orbits in the remnants. Box orbits cause the central kinematics to vary with viewing-angle. Reconstructed luminous M/L and central masses follow this variation. Luminous M/L are always underestimated (up to a factor of 2.5). Respective dark halos in the models can be overestimated by about the same amount, depending again on viewing angle. Reconstructed velocity anisotropies depend on viewing angle and on the orbital composition of the remnant. We construct N-body realisations of the Schwarzschild models to discuss chaotic orbits and the virial equilibrium in our models. Apparently flattened, rotating ellipticals of intermediate mass are likely close to both, axial symmetry and edge-on orientation. Our results imply that Schwarzschild models allow a reconstruction of their masses and stellar anisotropies with high accuracy. (abridged)
description: 28 pages, 39 figures; accepted for publication in MNRAS
From construct state, to reference, and beyond: the linker morpheme in Gorwaa
Creators: name: Harvey, Andrew
Publisher: name: Zenodo
Year: 2021
Subjects: Languages of Tanzania
Tanzanian Rift Valley Area
Afroasiatic
Cushitic
Gorwaa
Morphosyntax
Gender
Incorporation
Phonological Phrase

description: The linker in Gorwaa is a nominal morpheme with six different (sub)gender sensitive allomorphs. The bolded forms in slufitá wák "one lip", desir'eé' "my girl", hhawató baabá "father's man"; kurkí "this year", ayeemá uren "big lands", and /aylá tleer "a long wedding song" are all linkers. Nouns do not show linker morphology in the following environments: unmodified subjects, unmodified objects in 'second position' (i.e. before the selector), and incorporated nouns. Nouns do show linker morphology everywhere else.Earlier accounts of linkers in Southern Cushitic languages characterise them as construct state morphology - a form taken by nouns in many Afroasiatic languages when possessed. Following a discussion of why the idea of possession is not adequate to characterise all occurrences of linker morphology, an alternative is advanced: that linkers are obligatorily present on all nouns with reference, but go unpronounced when at the right edge of the phonological phrase. Finally, new analysis made in Kerr (2020) is considered, as well as prospects for better understanding this pervasive phenomenon in Gorwaa.
description: Note: This talk has not gone through a process of peer review, and findings should therefore be treated as preliminary and subject to change. Acknowledgement and citation: Harvey, Andrew. 2021. From construct state, to reference, and beyond: the linker morpheme in Gorwaa. Talk given as part of the This Time for Africa Lecture Series, Leiden University, Netherlands. 04.12.2021.
Instantons and Holomorphic Couplings in Intersecting D-brane Models
Creators: name: Akerblom, Nikolas
name: Blumenhagen, Ralph
name: Lust, Dieter
name: Schmidt-Sommerfeld, Maximilian
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We clarify certain aspects and discuss extensions of the recently introduced string D-instanton calculus (hep-th/0609191). The one-loop determinants are related to one-loop open string threshold corrections in intersecting D6-brane models. Utilising a non-renormalisation theorem for the holomorphic Wilsonian gauge kinetic functions, we derive a number of constraints for the moduli dependence of the matter field Kaehler potentials of intersecting D6-brane models on the torus. Moreover, we compute string one-loop corrections to the Fayet-Iliopoulos terms on the D6-branes finding that they are proportional to the gauge threshold corrections. Employing these results, we discuss the issue of holomorphy for E2-instanton corrections to the superpotential. Eventually, we discuss E2-instanton corrections to the gauge kinetic functions and the FI-terms.
description: 28 pages, 5 figures
Additional file 2 of RNA 2'-O-methylation promotes persistent R-loop formation and AID-mediated IgH class switch recombination
Creators: name: Kassab, Muzaffer Ahmad
name: Chen, Yibin
name: Wang, Xin
name: He, Bo
name: Brown, Eric J.
name: Yu, Xiaochun
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Table S1. Oligonucleotides used in this study [78–81].
Geometric variations of the Boltzmann entropy
Creators: name: Kalogeropoulos, Nikos
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We perform a calculation of the first and second order infinitesimal variations, with respect to energy, of the Boltzmann entropy of constant energy hypersurfaces of a system with a finite number of degrees of freedom. We comment on the stability interpretation of the second variation in this framework.
description: 9 pages, no figures
Additional file 3 of RNA 2'-O-methylation promotes persistent R-loop formation and AID-mediated IgH class switch recombination
Creators: name: Kassab, Muzaffer Ahmad
name: Chen, Yibin
name: Wang, Xin
name: He, Bo
name: Brown, Eric J.
name: Yu, Xiaochun
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Raw data.
Role of electrostatics in the texture of islands in free standing ferroelectric liquid crystal films
Creators: name: Lee, Jong-Bong
name: Pelcovits, Robert A.
name: Meyer, Robert B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Curved textures of ferroelectric smectic C* liquid crystals produce space charge when they involve divergence of the spontaneous polarization field. Impurity ions can partially screen this space charge, reducing long range interactions to local ones. Through studies of the textures of islands on very thin free-standing smectic films, we see evidence of this effect, in which materials with a large spontaneous polarization have static structures described by a large effective bend elastic constant. To address this issue, we calculated the electrostatic free energy of a free standing film of ferroelectric liquid crystal, showing how the screened coulomb interaction contributes a term to the effective bend elastic constant, in the static long wavelength limit. We report experiments which support the main features of this model.
Η διερεύνηση του άγχους και της κατάθλιψης σε αιμοκαθαιρόμενους ασθενείς
Creators: name: Μακρή, Μαργαρίτα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Αιμοκάθαρση
Κατάθλιψη
Άγχος
Hemodialysis
Depression
Anxiety

description: Στη παρούσα εργασία θα μελετήσουμε τις έννοιες του άγχους και της κατάθλιψης στους αιμοκαθαιρόμενους ασθενείς και πως αυτές επηρεάζουν την εξέλιξη της ασθένειας και τον τρόπο που την διαχειρίζονται. Η αιμοκάθαρση αποτελεί μία χρόνια πάθηση η οποία επιφέρει μεταβολές στην ζωή των ασθενών και μακροπρόθεσμα μπορεί να οδηγήσει στην εκδήλωση ψυχικών διαταραχών, με κυρίαρχες, το άγχος και την κατάθλιψη. Μετά από την ανάλυση των εννοιών του άγχους και της κατάθλιψης, ακολουθεί ο τρόπος που αυτές εκδηλώνονται στην συγκεκριμένη ομάδα ασθενών και η διαφοροποίηση τους με βάση τα δημογραφικά χαρακτηριστικά της ηλικίας και του φύλου. Τέλος, γίνεται αναφορά στις θεραπευτικές παρεμβάσεις για τον καλύτερο δυνατό τρόπο αντιμετώπισης και διαχείρισης των διαταραχών αυτών. Κλείνοντας ολοκληρώνουμε την εργασία με την συζήτηση και την βιβλιογραφία που χρησιμοποιήθηκε για την εκπόνησή της
description: In this paper we will study the concepts of anxiety and depression in hemodialysis patients and how they affect the disease progression and the way that people manage this situation. Hemodialysis is a chronic disease that leads to changes in the everyday life of patients and in long term conditions can lead to the appearance of psychiatric disorders, and more specific to anxiety and depression. After the analysis of the concepts of anxiety and depression, we analyze the circumstances under which these two concepts appear to this group of patients and how they differ based on the demographic characteristics of age and gender. In the end, there is a reference to the therapeutic interventions in order to achieve the better one way of treatment and management of anxiety and depression. We complete the study with the discussion and the bibliography that used for the preparation of this paper
Turion size advantage in the restoration of Vallisneria americana: the importance of genetic identity and diversity
Creators: name: Carew, Anne
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: aquatic ecology
subject: aquatic vegetation
subject: restoration

description: The restoration and rehabilitation of damaged ecosystems has become a worldwide endeavor utilizing vast resources and ecological knowledge to build functioning and resilient ecosystems. Biodiversity restoration increases the likelihood that present species are well-adapted to the environment or can complement each other in resource use. Genetic diversity in populations may increase establishment rate, resistance to invasion, and resilience in a changing world. In parallel field and greenhouse experiments, I established colonies of the submersed aquatic macrophyte Vallisneria americana. Colony survival and performance was affected by environmental conditions in the field and genotypic diversity in the greenhouse. In the presence of nonnative Hydrilla verticillata, V. americana height was reduced; however, biomass increased, suggesting resource partitioning in response to competition. These results suggest that genotypic identity and diversity are important in early establishment of plant populations and calls attention to designing restorations that incorporate genetic information about source populations.
Spherical Multi-Modal Place Recognition for Heterogeneous Sensor Systems
Creators: name: Bernreiter, Lukas
name: Ott, Lionel
name: Nieto, Juan
name: Siegwart, Roland
name: Cadena, Cesar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, we propose a robust end-to-end multi-modal pipeline for place recognition where the sensor systems can differ from the map building to the query. Our approach operates directly on images and LiDAR scans without requiring any local feature extraction modules. By projecting the sensor data onto the unit sphere, we learn a multi-modal descriptor of partially overlapping scenes using a spherical convolutional neural network. The employed spherical projection model enables the support of arbitrary LiDAR and camera systems readily without losing information. Loop closure candidates are found using a nearest-neighbor lookup in the embedding space. We tackle the problem of correctly identifying the closest place by correlating the candidates' power spectra, obtaining a confidence value per prospect. Our estimate for the correct place corresponds then to the candidate with the highest confidence. We evaluate our proposal w.r.t. state-of-the-art approaches in place recognition using real-world data acquired using different sensors. Our approach can achieve a recall that is up to 10% and 5% higher than for a LiDAR- and vision-based system, respectively, when the sensor setup differs between model training and deployment. Additionally, our place selection can correctly identify up to 95% matches from the candidate set.
description: Accepted for IEEE International Conference on Robotics and Automation, 2021
Magnetization relaxation in the single molecule magnet Ni$_4$ under continuous microwave irradiation
Creators: name: de Loubens, G.
name: Garanin, D. A.
name: Beedle, C. C.
name: Hendrickson, D. N.
name: Kent, A. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Spin relaxation between the two lowest-lying spin-states has been studied in the S=4 single molecule magnet Ni$_4$ under steady state conditions of low amplitude and continuous microwave irradiation. The relaxation rate was determined as a function of temperature at two frequencies, 10 and 27.8 GHz, by simultaneously measuring the magnetization and the absorbed microwave power. A strong temperature dependence is observed below 1.5 K, which is not consistent with a direct single-spin-phonon relaxation process. The data instead suggest that the spin relaxation is dominated by a phonon bottleneck at low temperatures and occurs by an Orbach mechanism involving excited spin-levels at higher temperatures. Experimental results are compared with detailed calculations of the relaxation rate using the universal density matrix equation.
description: 6 pages, 4 figures, submitted to Europhys. Lett
The carbonate catalyzed anomerization of protected 2, 4-dinitrophenyl glucopyranosides : a mechanistic study
Creators: name: Berven, Leise Ann
Publisher: name: University of British Columbia
Year: 2010

description: The mechanism of the carbonate catalyzed conversion of 2,4-dinitrophenyl 2 ,3 ,4,6-tetra-0-acetyl-β-D-glucopyranoside in DMSO to an equilibrated mixture of the α- and β-glycosides has been investigated using a variety of techniques. Pseudo-first-order rate constants (k) measured for the anomerization of the parent substrate and the 1-deuterio substrate indicated a secondary deuterium isotope effect of kH/kD = 1.09 ± 0.06. Pseudo-first-order rate constants measured for several deoxy and deoxyfluoro derivatives of the parent sugar showed that the deoxyfluoro sugars react at least as fast as the parent sugar whereas the deoxy sugars reacted more slowly. In addition to the 2,4-dinitro-phenyl glucoside, 2,6-dinitrophenyl glucoside also was found to anomerize, yet attempts to exchange the 2,4-dinitrophenolate groups of the glucoside with added 2,6-dinitrophenolate anion and vice versa were unsuccessful. Exchange of the proton at the anomeric carbon with a deuteron also does not occur when the anomerization is performed in the presence of a deuteron source (and vice versa). Exchange of the glucosyl residue was observed, however, when the 1-deuterio substrate was anomerized in the presence of non-deuterated 2,3,4,6-tetra-O-acetyl-D-glucopyranose. ¹H-n.m.r. of the 2,4-dinitrophenyl α-glucoside isolated from this reaction indicated that the a-glucoside possessed only 50% of the deuterium label, at the anomeric center. These results along with the observation of a Meisenheimer intermediate indicate that the anomerization proceeds via nucleophilic aromatic substitution and as such is novel mechanism for glycoside anomerization.
Early Life Stress Predicts Decreased Total Brain Volume, Cortical Thickness, and Cognitive Functioning in School-Age Children
Creators: name: Chad-Friedman, Emma
Publisher: name: Digital Repository at the University of Maryland
Year: 2018
Subjects: subject: Clinical psychology
subject: brain volume
subject: cortical thickness
subject: Early life stress
subject: executive functioning
subject: memory

description: Severe early life stress (ELS) (e.g., maltreatment/institutionalization) is associated with atypical neurological and cognitive development. Few studies have prospectively examined the neurological mechanisms underlying the cognitive deficits associated with less severe and more common forms of ELS. The current study examined the impact of common forms of ELS assessed during early childhood on children’s brain volume, cortical thickness, and memory and executive functioning assessed three years later in school age children, controlling for current stress. Participants included 63 children (50.8% female) assessed during preschool (Wave 1 age: M=4.23 years, SD=.84) and three years later (Wave 2 age: M=7.19 years, SD=.89). ELS included low socioeconomic status, single parent household, low parental education, child exposure to parental depression, and child exposure to high parental hostility. Children’s current life stress, cognitive abilities, and brain structure were assessed at Wave 2. ELS predicted reduced total gray volume, cortex volume, right inferior parietal thickness, and right superior parietal thickness, controlling for covariates and current stress. ELS also predicted poorer memory and attention shifting, controlling for current stress. Right superior parietal thickness mediated the effects of ELS on story recall memory. Results highlight the possible consequences of less severe forms of ELS on brain volume and cognitive functioning, suggesting potential neural mechanisms to further explore. Early childhood may be a particularly important time for intervention efforts to mitigate the neural and cognitive risks associated with early stress exposure.