cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
EFFECTS OF DIVIDE AND CONQUER ON BUSINESS CONTINUITY WITHOUT CONQUERING THE DIVIDE: A STUDY INTO AT&T'S ORGANIZATIONAL INFORMATION, INTELLECTUAL, AND TECHNOLOGY SILOS
Creators: name: Harvest, Frank
Publisher: name: Purdue University Graduate School
Year: 2025
Subjects: classificationCode: 460501
subject: Data engineering and data science
classificationCode: 460901
subject: Business process management
classificationCode: 460906
subject: Information systems education
classificationCode: 460912
subject: Knowledge and information management

description: Corporations divide responsibilities to accomplish tasks efficiently. This divide of responsibilities must be synthesized ensuring smooth cooperation, communication, and coordination among departments, creating a unified corporate strategy. Some departments in the corporation continue to operate divided in some capacity. Operating in total or partial isolation with separate departments, processes, knowledge, and systems creates an organizational silo.This study focused on investigating information, intellectual, and technology silos. Information silos when communication, research, instruction, and so forth are not dispersed throughout the organization to cross-functional teams. Intellectual silos are the result of insufficient skills and knowledge among employees and organizations. They restrict the flow of knowledge. Technology silos refer to systems that are specifically designed to provide advantages to a single organization by preference, or those which are incapable of being merged with a pre-existing system. Some technologies are antiquated and make interoperability difficult.The study provided recommendations for resolving silo issues in AT&T’s Transformation organization. This quantitative analysis was completed by utilizing best practices derived from literature reviews and data gathered from both the application and its users during the implementation of Salesforce.
BIRTH OF A SMALL FARMERS' GROUP IN GUINEA
Creators: name: Krebs, Pierre
name: Vogel, Jean
name: Krebs, Pierre
name: Vogel, Jean
Publisher: name: Unknown
Year: 1994
Subjects: Farm Management

description: In 1987, there was nothing to differentiate the Timbi-Madina region at the heart of Fouta Djalon from the rest of Guinea. Within six years the district had become home to the largest small farmers' group, and the farmers had taken complete control of potato production and marketing, with a turnover of several million French Francs. This paper briefly describes the history of development in the region, and summarizes the process by which these farmer groups were formed into a dynamic force for change in Guinea. This process was linked with a project initiated by the French volunteer programme to identify viable technologies and promote agricultural development in the region. The paper outlines the philosophy of this project, and describes how the project workers and the farmers worked together to create a process by which the local economy was transformed and an ethos of partnership evolved.
MPEC 2024-E124 : 2017 ED3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
The prognostic role of extramural venous invasion in post-chemoradiotherapy rectal cancer
Creators: name: Chand, Manish
Publisher: name: Imperial College London
Year: 2015

description: Introduction Extramural venous invasion (EMVI) is a poor prognostic factor in rectal cancer. It is detected by magnetic resonance imaging (MRI) and histopathological analysis. Neoadjuvant chemoradiotherapy (CRT) is often given to patients with locally advanced disease however the clinical outcomes of EMVI-positive tumours following such treatment remains unknown. This thesis aimed to investigate the radiological, pathological and molecular changes which occur in EMVI-positive tumours following CRT to determine whether these changes can predict prognosis. Methods Following a systematic review (SR) of EMVI in rectal cancer, a series of studies were conducted. Patients were identified from a prospectively maintained database of primary rectal cancers who were scheduled for CRT followed by curative surgery between 2006 and 2012. Imaging and pathology samples were reviewed and tissue samples were further processed for molecular profiling using micro-RNA analytical techniques. Data were correlated with disease-free survival (DFS), recurrence rate and patterns of relapse. Results SR demonstrated that EMVI is associated with locally advanced tumours, distant disease recurrence and worse overall survival. However there is a variation in technique and definitions which makes interpretation of historical studies problematic. EMVI is an important consideration in the multidisciplinary management of rectal cancer as most clinicians use it to influence treatment decisions. MRI may allow for improved detection rates of EMVI following CRT compared with routine histopathology techniques and it is an independent prognostic factor for recurrence at 3 years. Patients with persistent EMVI following CRT have improved DFS if given adjuvant chemotherapy. Finally, EMVI-positive tumours express specific patterns of microRNA sequences. Conclusion EMVI is a poor prognostic factor following CRT. Patients with evidence of EMVI may be considered for intensive adjuvant chemotherapy and more frequent surveillance for distant disease. Unique molecular signatures may hold the key for future management strategies. These results have led to the development of the MARVEL Study.
Radio Pulses along the Galactic Plane
Creators: name: Nice, D. J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have surveyed 68 deg^2 along the Galactic Plane for single, dispersed radio pulses. Each of 3027 independent pointings was observed for 68 s using the Arecibo telescope at 430 MHz. Spectra were collected at intervals of 0.5 ms and examined for pulses with duration 0.5 to 8 ms. Such single pulse analysis is the most sensitive method of detecting highly scattered or highly dispersed signals from pulsars with large pulse-to-pulse intensity variations. A total of 36 individual pulses from five previously known pulsars were detected, along with a single pulse not associated with a previously known source. Follow-up observations discovered a pulsar, PSR J1918+08, from which the pulse originated. This pulsar has period 2.130 s and dispersion measure 30 pc cm^-3, and has been seen to emit single pulses with strength up to 8 times the average.
description: 14 pages, 5 figures, AASTeX, accepted by the Astrophysical Journal
Exponentially convergent symbolic algorithm of the functional-discrete method for the fourth order Sturm-Liouville problems with polynomial coefficients
Creators: name: Makarov, Volodymyr
name: Romaniuk, Nataliia
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65L15, 65L20, 65L70, 34B09, 34B24, 34L16, 35G15

description: A new symbolic algorithmic implementation of the functional-discrete (FD-) method is developed and justified for the solution of fourth order Sturm--Liouville problem on a finite interval in the Hilbert space. The eigenvalue problem for the fourth order ordinary differential equation with polynomial coefficients is investigated. The sufficient conditions of an exponential convergence rate of the proposed approach are received. The obtained estimates of the absolute errors of FD-method significantly improve the accuracy of the estimates obtained earlier by I.P~Gavrilyuk, V.L.~Makarov and A.M.~Popov in 2010. Our algorithm is symbolic and operates with the decomposition coefficients of the eigenfunction corrections in some basis. The number of summands in these decompositions depends on the degree of the potential coefficients and the correction number. Our method uses only the algebraic operations and basic operations on $(2\times 1)$ column vectors and $(2\times 2)$ matrices. The proposed approach does not require solving any boundary value problems and computations of any integrals, unlike the previous variants of FD-method by I.P.~Gavrilyuk, V.L.~Makarov, A.M.~Popov and N.M.~Romaniuk in 2010 and 2017. The corrections to eigenpairs are computed exactly as analytical expressions, and there are no rounding errors. The numerical examples illustrate the theoretical results. The numerical results obtained with the FD-method are compared with the numerical test results obtained with other existing numerical techniques.
description: 38 pages, 3 figures, 5 tables, 3 appendices
Impact of COVID-19 on stroke/brain trauma survivors (Fama et al., 2021)
Creators: name: Fama, Mackenzie E.
name: Hatfield, Brooke
name: Coyle, Suzanne
name: Richman, Melissa S.
name: Georgeadis, Amy C.
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: Health Care
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 111709 Health Care Administration
subject: 110904 Neurology and Neuromuscular Diseases
subject: FOS: Clinical medicine

description: Purpose: The COVID-19 pandemic has led to stay-at-home orders and social distancing guidelines that have the potential to greatly impact individuals’ behavior and social engagement. Adults recovering from stroke or other brain trauma, who often have communication difficulties and other long-term challenges, are a population already at risk of isolation and lower quality of life. We investigated the impact of public health guidelines and related behavioral changes on self-perceptions of communication abilities and psychosocial factors in this population.Method: The Stroke Comeback Center, a community-based center for stroke and other brain trauma survivors with communication impairments, disseminated an online survey to current members to investigate changes in communication, social engagement, and quality of life.Results: Participants (N = 50) reported a number of changes in their day-to-day activities that reflect the current social distancing guidelines, such as reduced outings into the community and fewer in-person conversations with those living outside one’s home. Overall, feelings of connectedness to others and overall quality of life were reported to be decreased when compared to before the COVID-19 pandemic, whereas receptive language abilities and technology skills were reported to have improved. Perhaps most interestingly, certain behavioral changes (including healthy movement activities and participation in virtual programs) had specific relationships with perceived communication abilities and social engagement.Conclusions: Changes in daily life resulting from the COVID-19 pandemic have had a tangible impact on self-perceived psychosocial elements (e.g., quality of life) and communication abilities among stroke and other brain trauma survivors. Clinicians and researchers may consider these perceived changes when engaging with this population as the effects of the pandemic continue and in the period of community re-entry that may follow.
Supplemental Material S1. Coronavirus impact questionnaire.
Supplemental Material S2. Full set of responses to open-ended questions on the online survey.
Fama, M. E., Hatfield, B., Coyle, S., Richman, M. S., & Georgeadis, A. C. (2021). The impact of the COVID-19 public health crisis on communication and quality of life: Insights from a community of stroke and brain trauma survivors. American Journal of Speech-Language Pathology. Advance online publication. https://doi.org/10.1044/2021_AJSLP-20-00297
Block Oriented Programming: Automating Data-Only Attacks
Creators: name: Ispoglou, Kyriakos
name: AlBassam, Bader
name: Jaeger, Trent
name: Payer, Mathias
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: With the widespread deployment of Control-Flow Integrity (CFI), control-flow hijacking attacks, and consequently code reuse attacks, are significantly more difficult. CFI limits control flow to well-known locations, severely restricting arbitrary code execution. Assessing the remaining attack surface of an application under advanced control-flow hijack defenses such as CFI and shadow stacks remains an open problem. We introduce BOPC, a mechanism to automatically assess whether an attacker can execute arbitrary code on a binary hardened with CFI/shadow stack defenses. BOPC computes exploits for a target program from payload specifications written in a Turing-complete, high-level language called SPL that abstracts away architecture and program-specific details. SPL payloads are compiled into a program trace that executes the desired behavior on top of the target binary. The input for BOPC is an SPL payload, a starting point (e.g., from a fuzzer crash) and an arbitrary memory write primitive that allows application state corruption. To map SPL payloads to a program trace, BOPC introduces Block Oriented Programming (BOP), a new code reuse technique that utilizes entire basic blocks as gadgets along valid execution paths in the program, i.e., without violating CFI or shadow stack policies. We find that the problem of mapping payloads to program traces is NP-hard, so BOPC first reduces the search space by pruning infeasible paths and then uses heuristics to guide the search to probable paths. BOPC encodes the BOP payload as a set of memory writes. We execute 13 SPL payloads applied to 10 popular applications. BOPC successfully finds payloads and complex execution traces -- which would likely not have been found through manual analysis -- while following the target's Control-Flow Graph under an ideal CFI policy in 81% of the cases.
Transport in Floquet-Bloch bands
Creators: name: Fujiwara, C. J.
name: Singh, Kevin
name: Geiger, Zachary A.
name: Senaratne, Ruwan
name: Rajagopal, Shankari
name: Lipatov, Mikhail
name: Weld, David M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report Floquet band engineering of long-range transport and direct imaging of Floquet-Bloch bands in an amplitude-modulated optical lattice. In one variety of Floquet-Bloch band we observe tunable rapid long-range high-fidelity transport of a Bose condensate across thousands of lattice sites. Quenching into an opposite-parity Floquet-hybridized band allows Wannier-Stark localization to be controllably turned on and off using modulation. A central result of this work is the use of transport dynamics to demonstrate direct imaging of a Floquet-Bloch band structure. These results demonstrate that transport in dynamical Floquet-Bloch bands can be mapped to transport in quasi-static effective bands, opening a path to cold atom quantum emulation of ultrafast multi-band electronic dynamics.
description: 5 pages, 4 figures
Quantum analogue of energy equipartition theorem
Creators: name: Bialas, P.
name: Spiechowicz, J.
name: Luczka, J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the fundamental laws of classical statistical physics is the energy equipartition theorem which states that for each degree of freedom the mean kinetic energy $E_k$ equals $E_k=k_B T/2$, where $k_B$ is the Boltzmann constant and $T$ is temperature of the system. Despite the fact that quantum mechanics has already been developed for more than 100 years still there is no quantum counterpart of this theorem. We attempt to fill this far-reaching gap and consider the simplest system, i.e. the Caldeira-Leggett model for a free quantum Brownian particle in contact with thermostat consisting of an infinite number of harmonic oscillators. We prove that the mean kinetic energy $E_k$ of the Brownian particle equals the mean kinetic energy $\langle \mathcal E_k \rangle$ per one degree of freedom of the thermostat oscillators, i.e. $E_k = \langle \mathcal E_k \rangle$. We show that this relation can be obtained from the fluctuation-dissipation theorem derived within the linear response theory and is universal in the sense that it holds true for any linear and non-linear systems in contact with bosonic thermostat.
Contextual Predictions for Parker Solar Probe I: Critical Surfaces and Regions
Creators: name: Chhiber, Rohit
name: Usmanov, Arcadi V.
name: Matthaeus, William H.
name: Goldstein, Melvyn L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The solar corona and young solar wind may be characterized by critical surfaces -- the sonic, Alfvén, and first plasma-$β$ unity surfaces -- that demarcate regions where the solar wind flow undergoes certain crucial transformations. Global numerical simulations and remote sensing observations offer a natural mode for the study of these surfaces at large scales, thus providing valuable context for the high-resolution in-situ measurements expected from the soon-to-be-launched Parker Solar Probe (PSP). The present study utilizes global three-dimensional magnetohydrodynamic simulations of the solar wind to characterize the critical surfaces and investigate the flow in propinquitous regions. Effects of solar activity are incorporated by varying source magnetic dipole tilts and employing magnetogram-based boundary conditions. A magnetohydrodynamic turbulence model is self-consistently coupled to the bulk flow equations, enabling investigation of turbulence properties of the flow in the vicinity of critical regions. The simulation results are compared with a variety of remote sensing observations. A simulated PSP trajectory is used to provide contextual predictions for the spacecraft in terms of the computed critical surfaces. Broad agreement is seen in the interpretation of the present results in comparison with existing remote sensing results, both from heliospheric imaging and from radio scintillation studies. The trajectory analyses show that the period of time that PSP is likely to spend inside the $β=1$, sonic and Alfvén surfaces depends sensitively on the degree of solar activity and the tilt of the solar dipole and location of the heliospheric current sheet.
description: Accepted for publication in The Astrophysical Journal Supplement Series
Effects of energy dependent spacetime on geometrical thermodynamics and heat engine of black holes: gravity's rainbow
Creators: name: Panah, B. Eslam
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Inspired by applications of gravity's rainbow in UV completion of general relativity, we investigate charged topological black holes in gravity's rainbow and show that depending on the values of different parameters, these solutions may encounter with black hole solutions with two horizons, extreme black hole (one horizon) or naked singularity (without horizon). First, we obtain black hole solutions, calculate thermodynamical quantities of the system and check the first law of thermodynamics. Then, we study the thermodynamical behavior of the system including thermal stability and phase transitions. In addition, we employ geometrical thermodynamics to probe phase transition points and limits on having physical solutions. Finally, we obtain heat engines corresponding to these black holes. The goal is to see how black holes' parameters such as topological factor and rainbow functions would affect efficiency of the heat engines.
description: 18 Pages, 12 figures, accepted for publication in Physics Letters B
Psittacus eristatus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus eristatus

description: Psittacus eristatus [spec. nov.]
P. brachyurus albus, crista dependente flava.
Psittacus albus cristatus. Aldr. ornith. l. 11. c. 4. Will. ornith... Raj. av. 30. Seb. mus. 1. p. 94. t. 59. f. 1. Alb. av. 3. p. 12. t. 12. Edw. av. 160. t. 160. Frisch. av. 4. t. 50.
Habitat in China.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 99, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
AQURO: a fully automatable algorithm for echocardiographic quantification of effective regurgitant orifice area in mitral regurgitation
Creators: name: Moraldo, Mechela
Publisher: name: Imperial College London
Year: 2012

description: Effective regurgitant orifice area (EROA) in mitral regurgitation (MR) is difficult to quantify. Clinically it is measured using the proximal isovelocity surface area (PISA) method, which is intrinsically not automatable because it requires the operator to manually identify the mitral valve orifice. This thesis explores a possible alternative to this problem. I introduce a new automated algorithm, (“AQURO”, automated quantification of regurgitant orifice area), which calculates EROA directly from echocardiographic colour M-mode data, without requiring operator input to measure the radius. Instead of measuring the distance of an isovelocity contour from the orifice, AQURO is based on a previously proposed function representing the rate of change of velocities with position upstream of the orifice (illustrated in section 1.2.3.2.4 of this thesis). I study the new automated method using three approaches: physically constructed phantom model, computational fluid dynamics, and clinical measurements in patients with mitral regurgitation. The physically constructed phantom, of Doppler Test Fluid flowing through a drilled and directly measured orifice, supported the usability of the centreline velocity profile in this way for quantification of the orifice area. The computational model showed that the AQURO principle of a predictable progressive decline in velocity along the centreline appears to be valid over a range of positions in the left ventricle. The clinical measurements in patients with mitral regurgitation showed a good agreement between measurements of EROA using AQURO, which is found to be faster and have higher reproducibility than conventional PISA. I conclude that the colour M-mode centreline velocity profile is an efficient way of extracting information about mitral EROA. By eliminating the need to identify the orifice location, AQURO avoids an important source of measurement variability. Compared with PISA, it also reduces the analysis time allowing analysis and averaging of data from significantly more beats, improving the consistency of EROA quantification. If my findings are reproduced in independent laboratories, AQURO, being fully automated, would be a simple, effective enhancement for EROA quantification using standard echocardiographic equipment.
Time resolved spectroscopy of the post-AGB star HD56126
Creators: name: Oudmaijer, Rene D.
name: Bakker, Eric J.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have investigated the report of Tamura and Takeuti that the Halpha line of the F-type post-AGB star HD56126 is variable on time scales of minutes. To this end, HD56126 was observed on two occasions with the William Herschel Telescope. Seventeen, respectively thirty spectra were taken within time span of 1.5 hours in order to detect any short term variations. We find that the Halpha line profile changed strongly over the two month interval, but no evidence is found for short term variability. The variability Tamura and Takeuti claim to find is probably due to the low signal-to-noise in their spectra.
description: 6 pages plain latex includes 4 encapsulated poscript files, uses psfig.sty and mn.sty; 1994, Monthly Notices of the Royal Astronomical Society, 271, 615
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VI, Cart. 190 (11 H 75), 316 folios, f. 0048v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VI, Archives départementales de la Côte-d'Or, Cart. 190 (11 H 75), 316 folios, f. 0048v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome VI, Archives départementales de la Côte-d'Or, Cart. 190 (11 H 75), 316 folios, f. 0048v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Deep supervision with additional labels for retinal vessel segmentation task
Creators: name: Zhang, Yishuo
name: Chung, Albert C. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Automatic analysis of retinal blood images is of vital importance in diagnosis tasks of retinopathy. Segmenting vessels accurately is a fundamental step in analysing retinal images. However, it is usually difficult due to various imaging conditions, low image contrast and the appearance of pathologies such as micro-aneurysms. In this paper, we propose a novel method with deep neural networks to solve this problem. We utilize U-net with residual connection to detect vessels. To achieve better accuracy, we introduce an edge-aware mechanism, in which we convert the original task into a multi-class task by adding additional labels on boundary areas. In this way, the network will pay more attention to the boundary areas of vessels and achieve a better performance, especially in tiny vessels detecting. Besides, side output layers are applied in order to give deep supervision and therefore help convergence. We train and evaluate our model on three databases: DRIVE, STARE, and CHASEDB1. Experimental results show that our method has a comparable performance with AUC of 97.99% on DRIVE and an efficient running time compared to the state-of-the-art methods.
description: Accepted be MICCAI 2018
Investigation of hydrogen based redox flow batteries
Creators: name: Hewa Dewage, Harini Minoka
Publisher: name: Imperial College London
Year: 2016

description: Large scale energy storage is crucial for effective integration of intermittent renewable energy sources such as solar and wind. Redox flow batteries are a promising grid scale energy storage technology and understanding their losses is key to further optimisation. This thesis investigates a novel class of RFBs which utilises a conventional liquid based cathode in combination with a hydrogen anode, similar to that used in a Proton Exchange Membrane Fuel Cell (PEMFC). Firstly, a new Reference Electrode (RE) positioning method was developed in order to decouple anode and cathode processes in RFBs. Unlike other methods presented in literature, the approach described here can generate reliable measurements, without noticeably affecting the performance of the cell. This set-up was used to further understand the Regenerative Hydrogen-Vanadium Fuel Cell (RHVFC), which revealed that cathode diffusion and ohmic losses were the limiting processes of this cell. Catholyte crossover was also observed, which resulted in vanadium adsorption onto the catalyst of the hydrogen electrode. Secondly, the feasibility of a novel Regenerative Hydrogen-Cerium Fuel Cell (RHCFC) was validated. Using the same RE set-up, further investigation was carried out on an optimised cell, which yielded energy efficiencies in the range of 70 to 85 \% when charging/discharging at current densities up to 20 mA/cm2. A combination of electrochemical impedance spectroscopy and polarisation tests allowed the decoupling of many of the processes occurring at each electrode. In addition, imaging and surface characterisation techniques revealed the presence of carbon deposits on the fresh electrode surface, which increased with use; the nature of these deposits and their implication on cell operation will be the subject of further investigation. Finally, it was established that the performance of the cell is currently limited by the cerium cathode, which suffers from poor kinetics and large diffusion losses.
The abundance of brown dwarfs
Creators: name: Binney, James
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The amount of mass contained in low-mass objects is investigated anew. Instead of using a mass-luminosity relation to convert a luminosity function to a mass function, I predict the mass-luminosity relation from assumed mass functions and the luminosity functions of Jahreiss & Wielen (1997) and Gould et al (1997). Comparison of the resulting mass-luminosity relations with data from binary stars constrains the permissible mass functions. If the mass function is assumed to be a power law, the best fitting slope lies either side of the critical slope, -2, below which the mass in low-mass objects is divergent, depending on the luminosity function adopted. If these power-law mass functions are truncated at 0.001Msun, the contribution to the local density of stars lies between 0.016 and 0.039 Msun pc^-3, in conformity with the density measured dynamically from Hipparcos stars. If the mass function is generalized from a power law to a low-order polynomial in log(M), the mass in stars with M<0.1Msun is either negligible or strongly divergent, depending on the order of the polynomial adopted.
description: Plain TeX
Broad-band X-Ray Spectra of the Black Hole Candidate GRO J1655-40
Creators: name: Tomsick, John A.
name: Kaaret, Philip
name: Kroeger, Richard A.
name: Remillard, Ronald A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present broad-band (2 keV to 2 MeV) X-ray spectra of GRO J1655-40, a luminous X-ray transient and occasional source of relativistic radio jets, obtained with RXTE and OSSE. In one observation, the luminosity is found to be 18% of the Eddington limit, which is one of the highest luminosities ever observed from GRO J1655-40. For this observation, we find that an adequate fit is obtained when a broad iron line and a reflection component are added to a model consisting of a power-law plus a soft excess component. The 95% confidence lower limit on the rms line width is 0.86 keV. The power-law component has a photon index of 2.72 and extends to at least 800 keV without a cutoff. After this observation, a significant drop in the (5-12 keV)/(1.5-5 keV) hardness ratio occurred on a timescale less than 2 hours. From an RXTE observation of GRO J1655-40 made after the hardness transition, we find that the power-law index is harder (2.415 +/- 0.011), the flux of the power-law component is lower, and the total luminosity is 10% of the Eddington limit. The change in the power-law component is consistent with the correlation between the spectral index and power-law flux previously reported for GRO J1655-40.
description: 20 pages, 5 figures, Accepted for publication in the Astrophysical Journal
Anisotropy and inhomogeneity of the universe from $ΔT/T$
Creators: name: Maartens, Roy
name: Ellis, George
name: Stoeger, William
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A recent paper (Martinez--Gonzalez & Sanz 1995) showed that if the universe is homogeneous but anisotropic, then the small quadrupole anisotropy in the cosmic microwave background radiation implies that the spacetime anisotropy is very small. We point out that more general results may be established, without assuming a priori homogeneity. We have proved that small anisotropies in the microwave background imply that the universe is almost Friedmann--Robertson--Walker. Furthermore, the quadrupole and octopole place direct and explicit limits on the degree of anisotropy and inhomogeneity, as measured by the shear, vorticity, Weyl tensor and density gradients. In the presence of inhomogeneity, it is only possible to set a much weaker limit on the shear than that given by Martinez--Gonzalez & Sanz.
description: 7 pages, LaTeX, no figures
Spectral Line Distortions in the Presence of a Close-In Planet
Creators: name: Charbonneau, David
name: Jha, Saurabh
name: Noyes, Robert W.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the interpretation of distortions to stellar spectral lines with particular attention to line bisectors in the presence of an orbiting planetary companion. We present a simple model whereby light reflected by the companion can cause temporal variations to the observed line profiles. These distortions have a characteristic signature depending on the inclination angle of the system. For the known close-in extrasolar giant planets, the expected amplitude of the effect might not be far from current detection capabilities. This method could be used to directly detect the presence of the companion, yielding the orbital inclination and hence the planetary mass. Futhermore, a detection would measure a combination of the planetary radius and albedo, from which a minimum radius may be deduced.
description: 8 pages, 4 figures, uses emulateapj.sty, accepted by ApJ Letters
Walrasian Equilibrium and Centralized Distributed Optimization from the point of view of Modern Convex Optimization Methods on the Example of Resource Allocation Problem
Creators: name: Ivanova, Anastasiya
name: Gasnikov, Alexander
name: Nurminski, Evgeni
name: Vorontsova, Evgeniya
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90B99

description: We consider the resource allocation problem and its numerical solution. The following constructions are demonstrated: 1) Walrasian price-adjustment mechanism for determining the equilibrium; 2) Decentralized role of the prices; 3) Slater's method for price restrictions (dual Lagrange multipliers); 4) A new mechanism for determining equilibrium prices, in which prices are fully controlled not by Center (Government), but by economic agents -- nodes (factories). In economic literature the convergence of the considered methods is only proved. In contrast, this paper provides an accurate analysis of the convergence rate of the described procedures for determining the equilibrium. The analysis is based on the primal-dual nature of the suggested algorithms. More precisely, in this article we propose the economic interpretation of the following numerical primal-dual methods of convex optimization: dichotomy and subgradient projection method. Numerical experiments conclude the paper.
description: in Russian, 23 pages, 6 figures
Perioperative glycaemic control on diabetes outcome following gastric bypass surgery
Creators: name: Chuah, Ling Ling
Publisher: name: Imperial College London
Year: 2015

description: Bariatric surgery such as Roux-en-Y gastric bypass (RYGB) is increasingly performed in obese patients with type 2 diabetes (T2DM) due to its beneficial metabolic effect. RYGB is distinct from non-bariatric surgery as it improves glycaemic control immediately post-surgery. Most bariatric centres also use a low calorie diet preoperatively which also impacts on glycaemic control before surgery. Glycaemic management of these patients therefore needs to be reviewed perioperatively to avoid hypoglycaemia. To date, no study has assessed how best to manage this group of patients preoperatively and postoperatively. GLUCOSURG-pre and GLUCOSURG-post studies were designed to assess the effect of intensive glucose management before and after RYGB on glycaemic outcome. Moreover, patients with difficult controlled diabetes are more at risk of complications of diabetes. Given the rapid improvement in glucose control following RYGB, its effect on microvascular complications needs to be assessed. In this thesis, I measured the changes in diabetic nephropathy, retinopathy and neuropathy; and compared the changes in nephropathy and retinopathy to a control group. My study showed that 3 months of intensive management of glycaemia before surgery, or the first 2 weeks after surgery had not resulted in better glycaemic control at 1 year. RYGB has substantial effects on glucose control, and additional intensive glucose-lowering interventions do not confer clinical benefits compared to conservative approaches. In the case-control study, RYGB patients showed substantial reductions in albuminuria, while the rates of retinopathy progression were similar to those observed in a medically treated group. There was no change in peripheral nerve function 1 year after RYGB surgery. My study was limited by small sample size and short duration of follow up. Nonetheless, the result would reaffirm the importance of annual surveillance for diabetic retinopathy and neuropathy after RYGB.
Spectroscopic studies of IrO2 and Bi2Ir2O7
Creators: name: Kahk, Juhan Matthias
Publisher: name: Imperial College London
Year: 2016

description: The oxides of iridium, a 5d transition metal, have recently attracted interest in a number of scientific disciplines, ranging from fundamental solid state physics, to more applied areas of research such as spintronics and catalysis. The metallic oxides IrO2 and Bi2Ir2O7, in particular, are known to be good catalysts of the commercially important oxygen evolution reaction; IrO2 has also been identified as a promising material for spin current detection, and Bi2Ir2O7 has received attention due to its unusual magnetic response at low temperatures. In the work reported in this thesis, X-ray photoelectron spectroscopy using an Al Kα photon source (XPS), synchrotron-based hard X-ray photoelectron spectroscopy (HAXPES), X-ray emission spectroscopy (XES), X-ray absorption spectroscopy (XAS), and resonant inelastic X-ray scattering (RIXS) were used to characterize the electronic structures of IrO2 and Bi2Ir2O7. The results were compared to simulated spectra derived from the results of density functional theory calculations performed by collaborators, and analyzed in terms of qualitative models of the electronic structure. Excellent agreement between theory and experiment was observed, especially if the effects of final state lifetime broadening were accounted for. A new formalism was derived that allows final state lifetime effects to be included in band structure based RIXS simulations. The results of the theoretical calculations were also used to analyze the properties of the low energy electronic states in IrO2 and Bi2Ir2O7, and it was found that in both cases there are strong deviations from the predictions of the popular jeff = 1/2 model. The results of preliminary high pressure photoemission measurements of IrO2 are also presented in this thesis, alongside a more detailed discussion of fundamental aspects of this relatively new technique. In particular, the issue of the pressure profile that is formed around the sample and the first aperture in differentially pumped spectrometers is addressed using a combination of experimental measurements and computational fluid dynamics simulations. For the flow of N2 through a 0.3 mm aperture, the calculated pressures at the plane of the sample are tabulated for a range of sample-to-cone distances and pressures of 5.0 mbar, 9.4 mbar and 30 mbar.
Physiological mechanisms of lung volume reduction coils in emphysema
Creators: name: McNulty, William
Publisher: name: Imperial College London
Year: 2017

description: Emphysema is characterised by airflow limitation that is a result of both loss of elastic recoil and small airways disease. It is poorly responsive to medical therapy. Lung volume reduction coils improve symptoms and lung function in the short term. However their mechanism of action and medium term effectiveness is not fully understood. Methods A randomised controlled study consisting of thirty patients with severe chronic obstructive pulmonary disease was performed. Control patients crossed over to the treatment arm at 12 months. The primary outcome was 6 minute walk distance at 12 months. Changes in spirometry, lung volumes, computed tomography measured lung volumes and gas trapping were also assessed. In a small subgroup of patients detailed physiological characterization was performed to assess changes in airways resistance, ventilation heterogeneity and lung elastic recoil. Results In the randomised study at 12 months, there was no significant difference in 6 minute walk distance between treatment and controls (between group difference 25m, 95% CI -40 to 59, p = 0.7028). There was a trend to improvement in symptoms measured by SGRQ score (-6.53 points, 96% CI -17 to 0.2, p = 0.0589) and significant improvements in FRC (-0.41L, 95% CI -0.86 to -0.1, p = 0.0077). Including the crossovers there were 4 patient deaths (13.3%). Target lobe volume at both inspiration and expiration was reduced with no overall change in gas trapping. Airways resistance by plethysmography did not change significantly. There was no significant change in elastic recoil. Conclusions Treatment with lung volume reduction coils is effective at reducing lung volume and may achieve its effect through volume loss. There could also be an effect through elastic recoil as there was a non-significant trend towards an increase after the intervention. There appears to be no effect on airways resistance. Careful patient selection is required as there is a risk of death following treatment.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Cart. 193 (11 H 78), f. 0109r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Archives départementales de la Côte-d'Or, Cart. 193 (11 H 78), f. 0109r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IX, Archives départementales de la Côte-d'Or, Cart. 193 (11 H 78), f. 0109r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Phase mixing in time-independent Hamiltonian systems
Creators: name: Kandrup, Henry E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Everything you ever wanted to know about what has come to be known as ``chaotic mixing:'' This paper describes the evolution of localised ensembles of initial conditions in 2- and 3-D time-independent potentials which admit both regular and chaotic orbits. The coarse-grained approach towards an invariant, or near-invariant, distribution was probed by tracking (1) phase space moments through order 4 and (2) binned reduced distributions f(Z_a,Z_b,t) for a,b=x,y,z,p_x,p_y,p_z, computed at fixed time intervals. For ``unconfined'' chaotic orbits in 2-D systems not stuck near islands by cantori, the moments evolve exponentially: Quantities like the dispersion in p_x, which start small and eventually asymptote towards a larger value, initially grow exponentially in time at a rate comparable to the largest short time Lyapunov exponent. Quantities like ||, that can start large but eventually asymptote towards zero, decrease exponentially. With respect to a discrete L^p norm, reduced distributions f(t) generated from successive decay exponentially towards a near-invariant f_{niv}, although a plot of Df(t)=||f(t)-f_{niv}|| can exhibit considerable structure. Regular ensembles behave very differently, both moments and Df evolving in a fashion better represented by a power law time dependence. ``Confined'' chaotic orbits, initially stuck near regular islands because of cantori, exhibit an intermediate behaviour. The behaviour of ensembles evolved in 3-D potentials is qualitatively similar, except that, in this case, it is relatively likely to find one direction in configuration space which is ``less chaotic'' than the other two, so that quantities like L_{ab} depend more sensitively on which phase space variables one tracks.
description: 19 pages + 11 Postscript figures, latex, no macros. Monthly Notices of the Royal Astronomical Society, in press
Some Implications of Galactic Abundance Gradients Derived from H II Regions and Planetary Nebulae
Creators: name: Peimbert, Manuel
name: Carigi, Leticia
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: By comparing observed abundance gradients with those predicted by a chemodynamical model of the Galaxy the following results are obtained: there is a defficiency of O/H poor PNe in the solar vicinity which implies that only a fraction of intermediate mass stars produce PNe, a similar result is obtained from the observed abundance distributions of Ne/H, S/H and Ar/H; the age distributions of the stellar progenitors of type II and type III PNe show a substantial overlap, but the average age of the progenitors of type III PNe is larger than that of the progenitors of type II PNe; the S/H and the Ar/H gradients of type I PNe and H II regions are similar, the flatter O/H gradient of type I PNe relative to that of H II regions is probably to the effect of temperature fluctuations on the abundance determinations; the similarity of the abundance gradients derived from H II regions, and PNe imply that transient phenomena are not important in shaping the present day H II gradients.
description: 5 pages, 2 figures, 1 table
Psittacus niger Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus niger

description: Psittacus niger [spec. nov.]
P. brachyurus niger.
Psittacus niger. Edw. av. 5. t. 5.
Habitat in Madagascar.
Cauda longa, sed aequalis.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 99, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206