cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Collective Intelligence, Data Routing and Braess' Paradox
Creators: name: Tumer, K.
name: Wolpert, D. H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We consider the problem of designing the the utility functions of the utility-maximizing agents in a multi-agent system so that they work synergistically to maximize a global utility. The particular problem domain we explore is the control of network routing by placing agents on all the routers in the network. Conventional approaches to this task have the agents all use the Ideal Shortest Path routing Algorithm (ISPA). We demonstrate that in many cases, due to the side-effects of one agent's actions on another agent's performance, having agents use ISPA's is suboptimal as far as global aggregate cost is concerned, even when they are only used to route infinitesimally small amounts of traffic. The utility functions of the individual agents are not "aligned" with the global utility, intuitively speaking. As a particular example of this we present an instance of Braess' paradox in which adding new links to a network whose agents all use the ISPA results in a decrease in overall throughput. We also demonstrate that load-balancing, in which the agents' decisions are collectively made to optimize the global cost incurred by all traffic currently being routed, is suboptimal as far as global cost averaged across time is concerned. This is also due to 'side-effects', in this case of current routing decision on future traffic. The mathematics of Collective Intelligence (COIN) is concerned precisely with the issue of avoiding such deleterious side-effects in multi-agent systems, both over time and space. We present key concepts from that mathematics and use them to derive an algorithm whose ideal version should have better performance than that of having all agents use the ISPA, even in the infinitesimal limit. We present experiments verifying this, and also showing that a machine-learning-based version of this COIN algorithm in which costs are only imprecisely estimated via empirical means (a version potentially applicable in the real world) also outperforms the ISPA, despite having access to less information than does the ISPA. In particular, this COIN algorithm almost always avoids Braess' paradox.
Presentación: La formación en investigación en programas de doctorado en educación: comparación de cinco casos
Creators: name: Rey Castillo, Marisol
Publisher: name: Zenodo
Year: 2021
Subjects: formación de investigadores
educación comparada
estudios de posgrado

description: La formación en investigación en programas de doctorado abarca distintas acciones mediante las cuales se asegura el desarrollo de competencias investigativas propias de este nivel académico. Cada programa establece espacios y actividades para cumplir ese propósito. Además, debe analizar la pertinencia sus prácticas y con ello tomar decisiones de mejoramiento. Uno de los métodos para realizar esto último es a través de la educación comparada, la cual posibilita la identificación de prácticas, conceptos y políticas educativas en un contexto para analizar su posible transferencia a otro contexto similar. El objetivo del estudio era comparar las distintas acciones de formación en investigación en programas de doctorado en el área de educación, llevadas a cabo por cinco programas de distintas universidades alrededor del mundo. Como resultado se halló que si bien es cierto que existen actividades que son recurrentes en todos los programas, se dan acciones y características particulares de cada universidad, que pueden abrir la reflexión en torno a la adopción o adaptación de nuevas prácticas para el mejoramiento de la formación en investigación en los programas de doctorado en educación.
Transforming commodification : sustainability and the regulation of production and consumption networks
Creators: name: Quastel, Noah
Publisher: name: University of British Columbia
Year: 2014

description: This thesis analyzes the emergence in the 1990s and 2000s of novel forms of ‘green goods’ or ‘sustainable commodities’. Particular goods come in many forms and include fair trade coffee, certified wood, ethical investment funds, or higher density housing. They represent examples of how sustainability has emerged as a paradigm for the regulation of production and consumption networks. The thesis provides a survey of geographical and interdisciplinary work in commodity studies and suggests sustainable commodities challenges traditional geographical theories of commodification and commodity regulation. The thesis offers a survey of theories of regulation that can apply to global and local production and consumption networks and suggests the use of Strategic Relational Cultural Political Economy as a theory of regulation. The thesis includes four case studies that vary as to type of commodity and type of regulation. The first considers one of the first global certification systems -- the dolphin-safe label for tuna and which linked Thailand to California. The second concerns corporate social responsibility in foreign direct investment in bauxite (a core component in aluminum), linking a Montreal based aluminum company to mine sites in Orissa, India. The third case study concerns a domestic commodity under traditional state regulation -- that of inner city housing under urban sustainability and Smart Growth zoning initiatives in Vancouver, Canada. The fourth case study also considers housing in Vancouver but concerns the relationship between housing, neighbourhood change and rezoning initiatives outside of the urban core. The thesis concludes by showing how the case studies show the applicability of Strategic Relational Cultural Political Economy: Each study indicates a way in which environmental policies and sustainability contribute to a spatio-temporal and institutional fix for a production and consumption network.In each of the case studies, the expansion of capitalist processes involved a contradictory and conflict laden relationship with extra-economic, non-capitalist social and environmental processes. While this created societal pushback, the result was a process of negotiation and compromise which modestly incorporated civil society concern but was also protective of existing economic processes and firm market position.
Identification of Root Nodule Isolates by 16S-rRNA PCR
Creators: name: Maluk, M.
name: Iannetta, P.P.M.
Publisher: name: Zenodo
Year: 2018

description: The 16S rRNA gene is routinely used to identify bacteria to the generic level. This SOP describes how DNA is extracted from pure rhizobial cultures, and how the 16S rRNA gene is amplified from the DNA and then sequenced to allow for its identification by comparing it with sequences deposited in the Genbank database. The proper identification of rhizobia is essential if they are to be subject to further genetic and functional analyses, such as their performance at Biological Nitrogen Fixation (BNF) in symbiosis with compatible legumes. Identification at the generic level using 16S rRNA sequences is, however, only the first step in the full characterisation of rhizobial strains which will be necessary should they be selected as potential inoculants for commercial use. Therefore, this SOP also provides information about how other relevant genes (recA, nodA, nodC, nifH) can be amplified in order to provide more information about strains of interest.
description: The information presented here has been thoroughly researched and is believed to be accurate and correct. However, the authors cannot be held legally responsible for any errors. There are no warranties, expressed or implied, made with respect to the information provided. The authors will not be liable for any direct, indirect, special, incidental or consequential damages arising out of the use or inability to use the content of this publication.
Gravitational Collapse of Phantom Fluid in (2+1)-Dimensions
Creators: name: Martins, M. R.
name: da Silva, M. F. A.
name: Sheng, Andrew D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Mathematical Physics (math-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This investigation is devoted to the solutions of Einstein's field equations for a circularly symmetric anisotropic fluid, with kinematic self-similarity of the first kind, in $(2+1)$-dimensional spacetimes. In the case where the radial pressure vanishes, we show that there exists a solution of the equations that represents the gravitational collapse of an anisotropic fluid, and this collapse will eventually form a black hole, even when it is constituted by the phantom energy.
description: 10 pages
Evolution of ground state and upper critical field in R(1-x)GdxNi2B2C (R = Lu, Y): Coexistence of superconductivity and spin-glass state
Creators: name: Bud'ko, S. L.
name: Kogan, V. G.
name: Hodovanets, H.
name: Ran, S.
name: Moser, S. A.
name: Lampe, M. J.
name: Canfield, P. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report effects of local magnetic moment, Gd3+, doping (x =< 0.3) on superconducting and magnetic properties of the closely related Lu(1-x)GdxNi2B2C and Y(1-x)GdxNi2B2C series. The superconducting transition temperature decreases and the heat capacity jump associated with it drops rapidly with Gd-doping; qualitative changes with doping are also observed in the temperature-dependent upper critical field behavior, and a region of coexistence of superconductivity and spin-glass state is delineated on the x - T phase diagram. The evolution of superconducting properties can be understood within Abrikosov-Gor'kov theory of magnetic impurities in superconductors taking into account the paramagnetic effect on upper critical field with additional contributions particular for the family under study.
Specifications, quality control, manufacturing, and testing of accelerator magnets
Creators: name: Einfeld, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The performance of the magnets plays an important role in the functioning of an accelerator. Most of the magnets are designed at the accelerator laboratory and built by industry. The link between the laboratory and the manufacturer is the contract containing the Technical Specifications of the magnets. For an overview of the contents of the Technical Specifications, the specifications for the magnets of ALBA (bending, quadrupole, and sextupole) are described in this paper. The basic rules of magnet design are reviewed in Appendix A.
description: 41 pages, presented at the CERN Accelerator School CAS 2009: Specialised Course on Magnets, Bruges, 16-25 June 2009
Efficient Solution Algorithms for Factored MDPs
Creators: name: Guestrin, C.
name: Koller, D.
name: Parr, R.
name: Venkataraman, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper addresses the problem of planning under uncertainty in large Markov Decision Processes (MDPs). Factored MDPs represent a complex state space using state variables and the transition model using a dynamic Bayesian network. This representation often allows an exponential reduction in the representation size of structured MDPs, but the complexity of exact solution algorithms for such MDPs can grow exponentially in the representation size. In this paper, we present two approximate solution algorithms that exploit structure in factored MDPs. Both use an approximate value function represented as a linear combination of basis functions, where each basis function involves only a small subset of the domain variables. A key contribution of this paper is that it shows how the basic operations of both algorithms can be performed efficiently in closed form, by exploiting both additive and context-specific structure in a factored MDP. A central element of our algorithms is a novel linear program decomposition technique, analogous to variable elimination in Bayesian networks, which reduces an exponentially large LP to a provably equivalent, polynomial-sized one. One algorithm uses approximate linear programming, and the second approximate dynamic programming. Our dynamic programming algorithm is novel in that it uses an approximation based on max-norm, a technique that more directly minimizes the terms that appear in error bounds for approximate MDP algorithms. We provide experimental results on problems with over 10^40 states, demonstrating a promising indication of the scalability of our approach, and compare our algorithm to an existing state-of-the-art approach, showing, in some problems, exponential gains in computation time.
MPEC 2023-H186 : 2023 HV4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HV4

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.
CHIZIQLI TENGLAMALAR SISTEMASI YECHIMINI C++ DASTURI YORDAMIDA KRAMER USULIDA TOPISH
Creators: name: Butaboyeva, Durdona
Publisher: name: Zenodo
Year: 2025

description: Ma’lumki, kramer usuli (yoki Cramer's rule) - determinantlar yordamida chiziqli tenglamalar sistemasini yechish usuli bo‘lib, kvadrat matritsaga ega bo‘lgan sistemalar uchun qo‘llaniladi. Bu usul har bir noma'lumning qiymatini topish uchun asosiy matritsaning determinantlari bilan ishlaydi. Asosan 2x2, 3x3 kabi kichik o‘lchamli tenglamalar sistemalarida samarali bo‘ladi.
Discovery of a Low-Mass Companion to a Metal-Rich F Star with the MARVELS Pilot Project
Creators: name: Fleming, Scott W.
name: Ge, Jian
name: Mahadevan, Suvrath
name: Lee, Brian
name: Eastman, Jason D.
name: Siverd, Robert J.
name: Gaudi, B. Scott
name: Niedzielski, Andrzej
name: Sivarani, Thirupathi
name: Stassun, Keivan
name: Wolszczan, Alex
name: Barnes, Rory
name: Gary, Bruce
name: Nguyen, Duy Cuong
name: Morehead, Robert C.
name: Wan, Xiaoke
name: Zhao, Bo
name: Liu, Jian
name: Guo, Pengcheng
name: Kane, Stephen R.
name: van Eyken, Julian C.
name: De Lee, Nathan M.
name: Crepp, Justin R.
name: Shelden, Alaina C.
name: Laws, Chris
name: Wisniewski, John P.
name: Schneider, Donald P.
name: Pepper, Joshua
name: Snedden, Stephanie A.
name: Pan, Kaike
name: Bizyaev, Dmitry
name: Brewington, Howard
name: Malanushenko, Olena
name: Malanushenko, Viktor
name: Oravetz, Daniel
name: Simmons, Audrey
name: Watters, Shannon
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery of a low-mass companion orbiting the metal-rich, main sequence F star TYC 2949-00557-1 during the MARVELS (Multi-object APO Radial Velocity Exoplanet Large-area Survey) Pilot Project. The host star has an effective temperature T_eff = 6135 +/- 40 K, log(g) = 4.4 +/- 0.1 and [Fe/H] = 0.32 +/- 0.01, indicating a mass of M = 1.25 +/- 0.09 M_\odot and R = 1.15 +/- 0.15 R_\odot. The companion has an orbital period of 5.69449 +/- 0.00023 days and straddles the hydrogen burning limit with a minimum mass of 64 M_J, and may thus be an example of the rare class of brown dwarfs orbiting at distances comparable to those of "Hot Jupiters." We present relative photometry that demonstrates the host star is photometrically stable at the few millimagnitude level on time scales of hours to years, and rules out transits for a companion of radius greater than 0.8 R_J at the 95% confidence level. Tidal analysis of the system suggests that the star and companion are likely in a double synchronous state where both rotational and orbital synchronization have been achieved. This is the first low-mass companion detected with a multi-object, dispersed, fixed-delay interferometer.
description: 26 pages and 12 figures, accepted for publication in ApJ
MPEC 2023-H187 : 2023 HW4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HW4

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.
MIPS 24 Micron Observations of the Hubble Deep Field South: Probing the IR-Radio Correlation of Galaxies at z > 1
Creators: name: Huynh, M. T.
name: Gawiser, E.
name: Marchesini, D.
name: Brammer, G.
name: Guaita, L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present MIPS 24 micron observations of the Hubble Deep Field South taken with the Spitzer Space Telescope. The resulting image is 254 arcmin^2 in size and has a sensitivity ranging between ~12 to ~30 microJy rms, with a median sensitivity of ~20 microJy rms. A total of 495 sources have been cataloged with a signal-to-noise ratio greater than 5 sigma. The source catalog is presented as well as source counts which have been corrected for completeness and flux boosting. The IR sources are then combined with MUSYC optical/NIR and ATHDFS radio observations to obtain redshifts and radio flux densities of the sample. We use the IR/radio flux density ratio (q_24) to explore the IR-radio correlation for this IR sample and find q_24 = 0.71 +- 0.31 for sources detected in both IR and radio. The results are extended by stacking IR sources not detected in the radio observations and we derive an average q_24 for redshift bins between 0 < z < 2.5. We find the high redshift (z > 1) sources have an average q_{24} ratio which is better fit by local LIRG SEDs rather than local ULIRG SEDs, indicating that high redshift ULIRGs differ in their IR/radio properties. So ULIRGs at high redshift have SEDs different from those found locally. Infrared faint radio sources are examined, and while nine radio sources do not have a MIPS detection and are therefore radio-loud AGN, only one radio source has an extreme IRAC 3.6 micron to radio flux density ratio indicating it is a radio-loud AGN at z > 1.
description: 11 pages, 8 figures, accepted for publication in ApJ
Coupling ultracold atoms to mechanical oscillators
Creators: name: Hunger, David
name: Camerer, Stephan
name: Korppi, Maria
name: Jöckel, Andreas
name: Hänsch, Theodor W.
name: Treutlein, Philipp
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this article we discuss and compare different ways to engineer an interface between ultracold atoms and micro- and nanomechanical oscillators. We start by analyzing a direct mechanical coupling of a single atom or ion to a mechanical oscillator and show that the very different masses of the two systems place a limit on the achievable coupling constant in this scheme. We then discuss several promising strategies for enhancing the coupling: collective enhancement by using a large number of atoms in an optical lattice in free space, coupling schemes based on high-finesse optical cavities, and coupling to atomic internal states. Throughout the manuscript we discuss both theoretical proposals and first experimental implementations.
description: 19 pages, 9 figures
Investigating viscous damping using a webcam
Creators: name: Shamim, Sohaib
name: Zia, Wasif
name: Anwar, Muhammad Sabieh
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics Education (physics.ed-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: We describe an experiment involving a mass oscillating in a viscous fluid and analyze viscous damping of harmonic motion. The mechanical oscillator is tracked using a simple webcam and an image processing algorithm records the position of the geometrical center as a function of time. Interesting information can be extracted from the displacement-time graphs, in particular for the underdamped case. For example, we use these oscillations to determine the viscosity of the fluid. Our mean value of 1.08 \pm 0.07 mPa s for distilled water is in good agreement with the accepted value at 20\circC. This experiment has been successfully employed in the freshman lab setting.
description: 13 pages, 5 figures
MPEC 2023-H188 : 2023 HX4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HX4

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.
Advanced technical skills in rhizobiology
Creators: name: Saidou Koala
name: Woomer, Paul
name: Karanja, Nancy
name: Dashiell, Kenton
name: Abdullahi Bala
name: Abaidoo, Robert
name: Ngokho, Patrick O.
name: Mazvita S. Murwira
name: Akinson Tumbure
name: Collis S. Mukungurutse
name: Wolf, Judith J. De
Publisher: name: Gates Open Research
Year: 2019

description: Advanced technical skills in rhizobiology
MPEC 2023-H189 : 2023 HY4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HY4

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.
A spatial history of Canada : archives, knowledge, and geography
Creators: name: Dyce, Matthew
Publisher: name: University of British Columbia
Year: 2014

description: This dissertation asks how environmental information about the Canadian northwest was gathered, transmitted, and stored in the post-Confederation period (1867-present). It pays particular attention to the way objects such as photographs, maps, images, documents, and other material objects were employed to overcome the disparate geography of settlement. My key argument is that producing a unified model of Canada depended on employing both objects able to convey landscapes and subjects able to decode them geographically. To demonstrate this claim, the dissertation provides an interpretive method for studying the historical geography of Canada called spatial history, which I employ in two ways. The first argues that various actors and institutions worked to tie European newcomers to the land by entwining historical and geographical knowledge of Canada. I emphasize the cooperation between archives, government bureaus, and schools and universities in fashioning ‘spatial histories’ of modern Canada. The second focuses on how objects were used to transmit knowledge between different these different scales and sites. Here I show how the ‘spatial histories’ told by objects required users to adopt new means of seeing and interpreting landscapes, and in turn adopt new understandings of self, citizenship, and belonging. The case studies that make up the dissertation are joined by a set of themes that resonate in the spatial history of Canada: archives, visualization, environmental knowledge, state formation, the history of Canadian geography, historical commemoration, public memory, and regionalism.
Fermi-LAT Sensitivity to Dark Matter Annihilation in Via Lactea II Substructure
Creators: name: Anderson, Brandon
name: Kuhlen, Michael
name: Johnson, Robert
name: Madau, Piero
name: Diemand, Juerg
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a study of the ability of the Fermi Gamma-ray Space Telescope to detect dark-matter annihilation signals from the Galactic subhalos predicted by the Via Lactea II N-body simulation. We implement an improved formalism for estimating the boost factor needed to account for the effect of dark-matter clumping on scales below the resolution of the simulation, and we incorporate a detailed Monte Carlo simulation of the response of the Fermi-LAT telescope, including a simulation of its all-sky observing mode integrated over a ten year mission. We find that for WIMP masses up to about 150 GeV in standard supersymmetric models with velocity-averaged cross section 3*10^-26 cm^3 s^-1, a few subhalos could be detectable with >5 standard deviations significance and would likely deviate significantly from the appearance of a point source.
description: 16 pages, 6 figures
The OGLE View of Microlensing towards the Magellanic Clouds. III. Ruling out sub-solar MACHOs with the OGLE-III LMC data
Creators: name: Wyrzykowski, L.
name: Kozlowski, S.
name: Skowron, J.
name: Udalski, A.
name: Szymanski, M. K.
name: Kubiak, M.
name: Pietrzynski, G.
name: Soszynski, I.
name: Szewczyk, O.
name: Ulaczyk, K.
name: Poleski, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the third part of the series presenting the Optical Gravitational Lensing Experiment (OGLE) microlensing studies of the dark matter halo compact objects (MACHOs) we describe results of the OGLE-III monitoring of the Large Magellanic Cloud (LMC). This unprecedented data set contains almost continuous photometric coverage over 8 years of about 35 million objects spread over 40 square degrees. We report a detection of two candidate microlensing events found with the automated pipeline and an additional two, less probable, candidate events found manually. The optical depth derived for the two main candidates was calculated following a detailed blending examination and detection efficiency determination and was found to be tau=(0.16+-0.12)10^-7. If the microlensing signal we observe originates from MACHOs it means their masses are around 0.2 M_Sun and they compose only f=3+-2 per cent of the mass of the Galactic Halo. However, the more likely explanation of our detections does not involve dark matter compact objects at all and rely on natural effect of self-lensing of LMC stars by LMC lenses. In such a scenario we can almost completely rule out MACHOs in the sub-solar mass range with an upper limit at f<7 per cent reaching its minimum of f<4 per cent at M=0.1 M_Sun. For masses around M=10 M_Sun the constraints on the MACHOs are more lenient with f ~ 20 per cent. Owing to limitations of the survey there is no reasonable limit found for heavier masses, leaving only a tiny window of mass spectrum still available for dark matter compact objects.
description: Accepted for publication in MNRAS. On-line data available on OGLE website: http://ogle.astrouw.edu.pl
Assessing the Adoption of High Iron Bean Varieties and Their Impact on Iron Intakes and Other Livelihood Outcomes in Rwanda
Creators: name: Asare-Marfo, Dorene
name: Herrington, Caitlin
name: Alwang, Jeff
name: Eliud Birachi
name: Birol, Ekin
name: Diressie, Michael Tedla
name: Dusenge, Leonidas
name: Funes, Jose
name: Katungi, Enid
name: Labarta, Ricardo
name: LaRochelle, Catherine
name: Lister Katsvairo
name: Lividini, Keith
name: Abdelrahman Lubowa
name: Moursi, Mourad
name: Mulambu, Joseph
name: Murekezi, Abdoul
name: Musoni, Augustine
name: Nkundimana, Jean D'Amour
name: Adewale Oparinde
name: Vaiknoras, Kate
name: Zeller, Manfred
Publisher: name: Gates Open Research
Year: 2019

description: Assessing the Adoption of High Iron Bean Varieties and Their Impact on Iron Intakes and Other Livelihood Outcomes in Rwanda
MPEC 2023-H190 : 2023 HZ4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HZ4

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.
Collecting gas samples for greenhouse gas analysis and soil and lysimeter samples for nitrogen availability in soil
Creators: name: Young, M.W
Publisher: name: Zenodo
Year: 2021

description: This SOP provides practical instructions for installing equipment to sample greenhouse gases, soil and soil pore-space water in field experiment for combinable crops. Data from sample analyses, in combination with agronomic data, provides an assessment of nitrogen and carbon flows within crops at fixed time points and could be used to, for instance, examine the effects of conventional farming methods vs. sustainable farming methods. This methodology uses standard gas collection chambers, lysimeters and sampling methods, that could allow other institutes to develop gas sampling capability and produce results that are comparable with data collected in other projects using this method.
description: The information presented here has been thoroughly researched and is believed to be accurate and correct. However, the authors cannot be held legally responsible for any errors. There are no warranties, expressed or implied, made with respect to the information provided. The authors will not be liable for any direct, indirect, special, incidental or consequential damages arising out of the use or inability to use the content of this publication.
Analyse und Bewertung von Forschungsprozessen im Bundesinstitut für Risikobewertung : Eine qualitative Machbarkeitsstudie im Bereich des Forschungsdatenmanagements
Creators: name: Hummel, Benedikt
Publisher: name: Zenodo
Year: 2018
Subjects: Forschungsdatenmanagement
Forschungsdaten
Bundesinstitut für Risikobewertung

description: Forschungsdaten stellen in wissenschaftlichen Forschungsprozessen ein zentrales Element dar, das sich besonders in der stetigen Zunahme an generierten Daten durch die fortschreitende Digitalisierung in der Wissenschaft charakterisieren lässt. Mit dem ansteigenden Aufkommen von Forschungsdaten gewinnt das professionelle Datenmanagement konstant an Bedeutung. Das Management digitaler Forschungsdaten steht für sich genommen vor sehr unterschiedlichen disziplinspezifischen als auch disziplinübergreifenden Herausforderungen, die auf institutioneller Ebene von Forschungseinrichtungen zu bewältigen sind.

Die folgende Arbeit beschäftigt sich mit der Frage, auf welche Art und Weise das Bundesinstitut für Risikobewertung (BfR) als eine wissenschaftliche Einrichtung mit Forschungsaufgaben diesen Herausforderungen begegnet und beleuchtet ihre Handlungsmöglichkeiten im Bereich des Forschungsdatenmanagements (FDM).

Die Masterarbeit wurde mit dem Ziel durchgeführt, abteilungsübergreifende Bedarfe und Akzeptanz für technische und organisatorische Anforderungen an eine zentrale beziehungsweise dezentral verteilte vernetzende Infrastruktur für ein FDM am BfR durch Literaturanalyse und offene leitfadengestützte Experteninterviews zu ermitteln. Dadurch wird eine Konkretisierung der Bedingungen und Ressourcenbedarfe für den Aufbau und Betrieb erforderlicher Strukturen möglich.
Discovery of a tight correlation for gamma ray burst afterglows with `canonical' light curves
Creators: name: Dainotti, M. G.
name: Willingale, R.
name: Capozziello, S.
name: Cardone, V. F.
name: Ostrowski, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma Ray Bursts (GRB) observed up to redshifts $z>8$ are fascinating objects to study due to their still unexplained relativistic outburst mechanisms and a possible use to test cosmological models. Our analysis of 77 GRB afterglows with known redshifts revealed a physical subsample of long GRBs with canonical {\it plateau breaking to power-law} light curves with a significant {\it luminosity $L^*_X$ - break time $T^*_a$} correlation in the GRB rest frame. This subsample forms approximately the {\it upper envelope} of the studied distribution. We have also found a similar relation for a small sample of GRB afterglows that belong to the intermediate class (IC) between the short and the long ones. It proves that within the full sample of afterglows there exist physical subclasses revealed here by tight correlations of their afterglow properties. The afterglows with regular (`canonical') light curves obey not only a mentioned tight physical scaling, but -- for a given $T^*_a$ -- the more regular progenitor explosions lead to preferentially brighter afterglows.
description: 15 pages, 5 figures accepted to ApJL
Supplementary files.docx
Creators: name: Pega, Frank
name: Al-Emam, Rola
name: Cao, Bochen
name: Davis, Cynthia
name: Edwards, Sally J.
name: Gagliardi, Diana
name: Gastal Fassa, Anaclaudia
name: Hassan, Mohd Nassir
name: Hosseinpoor, Ahmad Reza
name: Iavicoli, Sergio
name: Jandaghi, Jafar
name: Jarosinska, Dorota I.
name: Kgalamono, Spo M.
name: Khaleghy Rad, Mona
name: Khodabakhshi, Mostafa
name: Li, Xinxin
name: Marinaccio, Alessandro
name: Mbayo, Guy
name: Rowshani, Zohreh
name: Sanabria, Natasha
name: Wilson, Kerry S.
name: Solar, Orielle
name: Streicher, Kai N.
name: Sun, Xin
name: Taghizadeh Asl, Rahim
name: Yadegari, Mehrdad
name: Zhang, Siyu
name: Zungu, Muzimkhulu
name: Momen, Natalie C.
Publisher: name: figshare
Year: 2023
Subjects: Occupational epidemiology

description: New global indicator for workers’ health: mortality rate from diseases attributable to selected occupational risk factors: supplementary files
Removal of phosphate at low concentration from water by porous PVA/Al2O3 composites
Creators: name: Li, Xiaohu
name: Hu, Xiaoya
name: Fu, Yuzheng
name: Ai, Huiying
name: Fu, Ming-Lai
name: Yuan, Baoling
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: 60506 Virology

description: The porous polyvinyl alcohol (PVA)/Al2O3 composite by supporting activated alumina on the cross-linked network of PVA has been successfully prepared and its property for the removal of phosphate in aqueous solution was also evaluated. The structure of the PVA/Al2O3 was examined by scanning electron microscopy. It showed that the activated alumina particles with an average size of 1 μm were evenly dispersed and fixed in the cross-linked network structure of PVA. The effects of adsorption time, solution temperature, pH, initial concentration of phosphate, Al2O3 loading rate, dosage and coexisting ions on the phosphate removal were further studied. The results showed that the highest removal phosphate efficiency of 95% can be obtained with the Al2O3 loading rate of PVA/Al2O3 being 60 wt.% at pH of 4 at 30 °C. The maximum adsorption capacities of PO43− by PVA/Al2O3 suggested by the Langmuir isothermal model was 10.12 mg/g. The adsorption process of phosphate can be fit well with a pseudo-second-order model (R2 = 0.9900). The PVA/Al2O3 composite exhibited a high selective adsorption of phosphate in the presence of commonly coexisting anions except the obvious effect of CO32− in water. Meanwhile, the PVA/Al2O3 composite can be easily separated and recovered due to the granulation of adsorbent. PVA/Al2O3 composite also shows the excellent properties of regeneration and recycling use with the removal efficiency of phosphate was 88.93%, 88.38% and 94.34% after three cycles, respectively. It can be proposed that the PVA/Al2O3 composite is a promising recyclable adsorbent for removing phosphate at low concentration from aqueous solution.
Transport in disordered two-dimensional topological insulator
Creators: name: Gusev, G. M.
name: Kvon, Z. D.
name: Shegai, O. A.
name: Mikhailov, N. N.
name: Dvoretsky, S. A.
name: Portal, J. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study experimentally the transport properties of "inverted" semiconductor HgTe-based quantum well, which is related to the two-dimensional topological insulator, in diffusive transport regime. We perform nonlocal electrical measurements in the absence of the magnetic field and observe large signal due to the edge states. It demonstrates, that the edge states can propagate over long distance 1 mm, and, therefore, there is no difference between local and non local electrical measurements in topological insulator. In the presence of the in-plane magnetic field we find strong decrease of the local resistance and complete suppression of the nonlocal resistance. We attribute this observation to the transition between topological insulator and bulk metal induced by the in-plane magnetic field.
description: 4.5 pages, 4 figures
Application of birnessite-type solids prepared by sol–gel and oxidation methods in photocatalytic degradation of 4-nitrophenol
Creators: name: González-Morán, S.
name: González, B.
name: Vicente, M. A.
name: Trujillano, R.
name: Rives, V.
name: Gil, A.
name: Korili, S. A.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Potassium birnessites were prepared using two methods, sol–gel or oxidation. The solids were characterised by element chemical analysis, powder X-ray diffraction, FT-IR spectroscopy, thermal analyses, and nitrogen adsorption. The evolution of the properties as a function of the preparation method was discussed. The photocatalytic performance of these solids was preliminarily tested for the degradation of 4-nitrophenol. The degradation pathway and the nature of the by-products were investigated by mass spectrometry. The solids showed good catalytic behaviour, although their preparation must be improved, mainly concerning the calcination step involved in sol–gel synthesis, which led to the formation of Mn2O3 that worsened the catalytic behaviour.
Ionisation Models for Nano-Scale Simulation
Creators: name: Seo, H.
name: Pia, M. G.
name: Saracco, P.
name: Kim, C. H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Two theory-driven models of electron ionization cross sections, the Binary-Encounter-Bethe model and the Deutsch-Märk model, have been design and implemented; they are intended to extend the simulation capabilities of the Geant4 toolkit. The resulting values, along with the cross sections included in the EEDL data library, have been compared to an extensive set of experimental data, covering more than 50 elements over the whole periodic table.
description: 4 pages, to appear in proceedings of the Nuclear Science Symposium and Medical Imaging Conference 2010, Knoxville
Porous carbon supported calcium oxide for CO2 adsorption and separation of CO2/CH4
Creators: name: Jonnalagadda, Madhavi
name: Ibrahim, Sobhy M.
name: Shair, Omar H. M.
name: Mutyala, Suresh
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: Hematology

description: Calcium oxide incorporated porous carbon materials were synthesized by the impregnation method to study CO2 adsorption and separation of CO2/CH4. The X-ray diffraction, Raman analysis, N2 isotherms at 77 K, and SEM with EDX analysis were used to characterize synthesized materials. XRD and N2 isotherm results have confirmed that synthesized carbon has porosity, and EDX analysis has reported that the presence of CaO on porous carbon. 10CaO/porous carbon has shown 31 cm3 g−1 of CO2 adsorption which was higher than bare porous carbon CO2 adsorption 17.5 cm3 g−1 at 298 K, 1 bar. It was attributed to electrostatic interaction between CaO and CO2. However, CH4 adsorption was decreased by a decrease in surface area. The selectivity of CO2/CH4 was higher for 10CaO/porous carbon and the heat of CO2 adsorption was 36 KJ/mol at high adsorption of CO2. Moreover, CO2 adsorption was the same in each adsorption cycle.
Possible evidence for two-gap superconductivity in TiSe_2Cu_x
Creators: name: Zaberchik, Moran
name: Chashka, Khanan
name: Patlgan, Larisa
name: Maniv, Ariel
name: Baines, Chris
name: King, Philip
name: Kanigel, Amit
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a comprehensive TF-muSR study of TiSe_2Cu_2. The magnetic penetration depth was found to saturate at low temperature as expected in an s-wave SC. As x is increased we find that the superfluid density increases and the size of the superconducting gap, calculated from the temperature dependence of the superfluid density, is approaching the BCS value. However, for low values of x, the gap is smaller than the weak-coupling BCS prediction suggesting that two superconducting gaps are present in the sample.
description: Accepted for publication in PRB
A SYNTHETIC TYMPANIC MEMBRANE FOR MIDDLE EAR ACOUSTIC SENSOR TESTS OF A FULLY IMPLANTABLE COCHLEAR PROSTHESIS
Creators: name: Parinaz Ashrafi
name: Akcakaya, Dilek Isik
name: Kulah, Haluk
Publisher: name: Zenodo
Year: 2018

description: A physical model of human Tympanic Membrane (TM), based on PDMS, as an easily accessible test platform for acoustic transducers was designed and fabricated.
Non-Boolean almost perfect nonlinear functions on non-Abelian groups
Creators: name: Poinsot, Laurent
name: Pott, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The purpose of this paper is to present the extended definitions and characterizations of the classical notions of APN and maximum nonlinear Boolean functions to deal with the case of mappings from a finite group K to another one N with the possibility that one or both groups are non-Abelian.
description: 17 pages
Atmospheric recirculation during ozone episodes in the Lower Fraser Valley, B. C.
Creators: name: Seagram, Annie F.
Publisher: name: University of British Columbia
Year: 2014

description: The presence of thermo-topographic circulations in areas of complex terrain plays an important role in recirculating pollutants during periods of degraded air quality. In this modelling study, we seek to define and detect atmospheric recirculation in the Lower Fraser Valley (LFV), British Columbia, a region that frequently experiences episodes of degraded air quality despite its modest total emissions and relatively small population size. The Weather Research and Forecasting (WRF) model is used to simulate wind fields during seven severe, three-day summertime ozone episodes occurring over a period of 20 years (1985-2006). These episodes cover the known set of synoptic and mesoscale circulation regimes conducive to ozone episodes in the LFV. A trajectory modelling study is devised where WRF model output is used to compute trajectories using the HYbrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model. In order to examine pollutant transport, the starting location of trajectories is selected to coincide with the location of maximum ozone precursor (NOx and VOCs) emissions. Number density maps generated from composite trajectory fields reveal different spatial distributions of trajectories by circulation regime. A generally applicable quantitative definition and objective detection algorithm for recirculation is developed, and then applied to the modelled trajectories to identify recirculating trajectory segments (RTSs). Recirculation is detected during all episodes, though not all circulation regimes result in the same the frequency of detection. Analysis of RTSs shows that recirculation in the LFV is spatially and temporally the same regardless of mesoscale circulation conditions. There is strong evidence that pollutants may be "carried-over" from one day of an episode to the next, and that air parcels frequently return to their origin within less than 12 hours. Results suggest that recirculation is primarily driven by onshore flows and mountain-valley circulations within the main valley floor of the LFV, and secondarily by diurnal flows within tributary valleys. This research adds to our understanding of atmospheric transport during ozone episodes in the LFV, and provides a new framework for studying recirculation elsewhere.