cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Survival of a Revolutionary Regime: Politics and Economics in Post-Soviet Cuba
Creators: name: Jimenez, Alexandro E.
Publisher: name: University of Chicago
Year: 2023
Subjects: subject: Cuba
subject: Special Period
subject: Regime Survival

description: The dissolution of the Soviet Union triggered a crisis within Cuba commonly referred to as the Special Period. Economic constraints forced the Communist Party of Cuba (PCC) to carefully adjust their market approach without compromising their political agenda. Fidel Castro passed away in 2016, yet his regime is still in power and the U.S. embargo against Cuba remains in place. This paper will analyze the strategies that the PCC adopted to enable its political survival. Cuba has largely been a one-party state since the 1960s with the PCC effectuating a combination of four different survival mechanisms to prolong their rule. I will discuss how the party has implemented these techniques into their policy while identifying how their medical diplomacy has been an outlier separating Cuba from other autocracies. The decision making by Cuban leadership in the post-Soviet era has contributed to the government’s persistence despite internal and external threats. Castro’s PCC has weathered decades of opposition movements, but recurring economic crisis has cast doubt on the party’s ability to withstand further sociopolitical pressures.
Group Theory of Chiral Photonic Crystals with 4-fold Symmetry: Band Structure and S-Parameters of Eight-Fold Intergrown Gyroid Nets
Creators: name: Saba, Matthias
name: Turner, Mark D.
name: Mecke, Klaus
name: Gu, Min
name: Schröder-Turk, Gerd E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The Single Gyroid, or srs, nanostructure has attracted interest as a circular-polarisation sensitive photonic material. We develop a group theoretical and scattering matrix method, applicable to any photonic crystal with symmetry I432, to demonstrate the remarkable chiral-optical properties of a generalised structure called 8-srs, obtained by intergrowth of eight equal-handed srs nets. Exploiting the presence of four-fold rotations, Bloch modes corresponding to the irreducible representations E- and E+ are identified as the sole and non-interacting transmission channels for right- and left-circularly polarised light, respectively. For plane waves incident on a finite slab of the 8-srs, the reflection rates for both circular polarisations are identical for all frequencies and transmission rates are identical up to a critical frequency below which scattering in the far field is restricted to zero grating order. Simulations show the optical activity of the lossless dielectric 8-srs to be large, comparable to metallic metamaterials, demonstrating its potential as a nanofabricated photonic material.
Parametric pattern selection in a reaction-diffusion model
Creators: name: Stich, Michael
name: Ghoshal, Gourab
name: Pérez-Mercader, Juan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We compare spot patterns generated by Turing mechanisms with those generated by replication cascades, in a model one-dimensional reaction-diffusion system. We determine the stability region of spot solutions in parameter space as a function of a natural control parameter (feed-rate) where degenerate patterns with different numbers of spots coexist for a fixed feed-rate. While it is possible to generate identical patterns via both mechanisms, we show that replication cascades lead to a wider choice of pattern profiles that can be selected through a tuning of the feed-rate, exploiting hysteresis and directionality effects of the different pattern pathways.
On the (im)possibility of testing new physics in exoplanets using transit timing variations: deviation from inverse-square law of gravity
Creators: name: Xie, Yi
name: Deng, Xue-Mei
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Ground-based and space-borne observatories studying exoplanetary transits now and in the future will considerably increase the number of known exoplanets and the precision of the measured times of transit minima. Variations in the transit times can not only be used to infer the presence of additional planets, but might also provide opportunities for testing new physics in the places beyond the Solar system. In this work, we take deviation from the inverse-square law of gravity as an example, focus on the fifth-force-like Yukawa-type correction to the Newtonian gravitational force which parameterizes this deviation, investigate its effects on the secular transit timing variations and analyze their observability in exoplanetary systems. It is found that the most optimistic values of Yukawa-type secular transit timing variations are at the level of $\sim 0.1$ seconds per year. Those values unfortunately appear only in rarely unique cases and, most importantly, they are still at least two orders of magnitude below the current capabilities of observations. Such a deviation from the inverse-square law of gravity is likely too small to detect for the foreseeable future. Meanwhile, systematic uncertainties, such as the presence of additional and unknown planets, will likely be exceptionally difficult to remove from a signal that should be seen.
description: 8 pages, 2 figures
title: Convergence in drought stress, but a divergence of climatic drivers across a latitudinal gradient in a temperate broadleaf forest
Creators: name: Benito, Dario Martin
name: Pederson, Neil
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Dendroclimatology
subject: Plants--Effect of drought on
subject: Trees--Climatic factors
subject: Meteorology
subject: Ecology
subject: FOS: Biological sciences
subject: Botany
subject: Climatic changes

description: Aim: Information about climate stressors on tree growth is needed in order to assess the impacts of global change on forest ecosystems. Broad-scale patterns of climatic limitations on tree growth remain poorly described across eastern North American deciduous forests. We examined the response of broadleaf tree species to climate in relation to their taxonomy, functional traits and geographical location. Location: Eastern North America (32–45° N; 70–88° W). Methods: We used a network of 86 tree-ring width chronologies from eight species that cover a wide range of ecological and climatic conditions. Species were analysed individually or combined according to taxa and wood anatomical functional traits. We identified climate stressors through correlations between growth and climate (from 1916 to 1996). We also explored patterns in the climate responses of these species with two clustering techniques. Results: We found strong correlations between water availability and growth for all species. With few exceptions, this drought stress was independent of taxonomy or wood anatomical functional group. Depending on latitude, however, different climatic drivers governed this common drought response. In the cool, northern part of our network, forest growth was most strongly limited by precipitation variability, whereas maximum temperature was a stronger limiting factor than precipitation in the wetter and warmer southern parts. Main conclusions: Our study highlights the sensitivity of broadleaf temperate forests to drought stress at annual to decadal scales, with few species-specific differences. The roles of temperature and precipitation on drought-sensitivity differ at opposing ends of our subcontinental-scale network. The impact of future environmental changes on these forests will ultimately depend on the balance between temperature and precipitation changes across this latitudinal gradient.
SNOWPACK drifting snow simulation setup and input files for 4 sites in Antarctica
Creators: name: , Wever
Publisher: name: Zenodo
Year: 2022

description: SNOWPACK model simulation setups for sites D17, D47, Princess Elisabeth Antarctica (PEA) and Hammarryggen Ice Rise (HIR) in Antarctica. MeteoIO (required for preparing the meteorological data for SNOWPACK) and SNOWPACK are software published under a GNU LGPLv3 license by the WSL Institute for Snow and Avalanche Research SLF at https://gitlabext.wsl.ch/snow-models. The repository used to develop the model code used here can be accessed via DOI: 10.5281/zenodo.3891845. The exact model source code used in this study corresponds to commit 6fdc98f, and can be accessed via doi: 10.5281/zenodo.6629078. This dataset belongs to: Wever, N., Keenan. E., Amory, C., Lehning, M. Sigmund, A., Huwald, H., and Lenaerts, J. T. M.: Observations and simulations of new snow density in the drifting snow dominated environment of Antarctica (in review). Details: ===== The zip-file contains: Folder smet: contains the meteorological forcing data files Folder current_snow: contains initial *.sno files for the simulations Folder cfgfiles: contains the setup files for the SNOWPACK model (*.ini files) Folder output: empty, but the model will write output in this folder File naming conventions: The sites are denoted by station IDs: D17, D47, PEA and HIR. M denotes simulation setups fully driven by MERRA-2 (in contrast to simulations using in-situ wind observations when available) S denotes simulation setups that produce *sno files on very high temporal resolution.
 WARNING: running these S-simulations for the full period will create many, many output files (up to half a million!). It is recommended to run the corresponding setup without the label S up to the period of interest, and run these simulation setups starting from there. Notes: The corrections to precipitation, as listed in the manuscript, are specified in the *.ini files Variables in the *.smet file are: TA: air temperature RH: relative humidity VW: wind speed VWo: uncorrected wind speed ISWR: incoming short-wave radiation ILWR: incoming long-wave radiation PSUM: precipitation sum since the previous time step TSG: ground/bottom temperature The simulations denoted "S" are designed to run only for a brief period of time using the output *.sno file from a simulation without the high resolution output. As a consequence, the simulations for HIR with the suffix "S" with an empty *sno file (i.e., without any snow layers) crash because the temperature equation doesn't converge for the thin layers that are deposited with the settings in those configuration files.
An ALMA survey of sub-millimeter galaxies in the Extended Chandra Deep Field South: Sub-millimeter properties of color-selected galaxies
Creators: name: Decarli, R.
name: Smail, I.
name: Walter, F.
name: Swinbank, A. M.
name: Chapman, S.
name: Coppin, K. E. K.
name: Cox, P.
name: Dannerbauer, H.
name: Greve, T. R.
name: Hodge, J. A.
name: Ivison, R.
name: Karim, A.
name: Knudsen, K. K.
name: Lindroos, L.
name: Rix, H. -W.
name: Schinnerer, E.
name: Simpson, J. M.
name: van der Werf, P.
name: Weiss, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the sub-mm properties of color-selected galaxies via a stacking analysis applied for the first time to interferometric data at sub-mm wavelengths. We base our study on 344 GHz ALMA continuum observations of ~20''-wide fields centered on 86 sub-mm sources detected in the LABOCA Extended Chandra Deep Field South Sub-mm Survey (LESS). We select various classes of galaxies (K-selected, star-forming sBzK galaxies, extremely red objects and distant red galaxies) according to their optical/NIR fluxes. We find clear, >10-sigma detections in the stacked images of all these galaxy classes. We include in our stacking analysis Herschel/SPIRE data to constrain the dust SED of these galaxies. We find that their dust emission is well described by a modified black body with Tdust~30 K and beta=1.6 and IR luminosities of (5-11)x10^{11} Lsun, or implied star formation rates of 75-140 Msun/yr. We compare our results with those of previous studies based on single-dish observations at 870 micron and find that our flux densities are a factor 2-3 higher than previous estimates. The discrepancy is observed also after removing sources individually detected in ALESS maps. We report a similar discrepancy by repeating our analysis on 1.4\,GHz observations of the whole ECDFS. Hence we find tentative evidence that galaxies that are associated in projected and redshift space with sub-mm bright sources are brighter than the average population. Finally, we put our findings in the context of the cosmic star formation rate density as a function of redshift.
description: 9 figures. Accepted for publication in ApJ
title: Addressing Acts of Oppression within Online Classrooms: Best Practices and Collaborative Solutions
Creators: name: Ortega, Amelia
name: Marquart, Matthea S.
name: Andruczyk, Malwina
Publisher: name: Columbia University
Year: 2015
Subjects: Social service
Education
Computer-assisted instruction
Oppression (Psychology)
Teaching

description: Developing and facilitating topics related to anti-oppressive social work practice within online classroom environments can present unique challenges and barriers to engagement. In this workshop, presenters will discuss instructional design, learning tools and specific activities adapted for online learning and engagement regarding interpersonal acts of marginalization. This workshop will include definitions of language commonly used to instruct on systemic oppression. Pedagogical frameworks for creating online course content specific to anti-oppressive practice will be presented as well. Workshop participants will have the opportunity to critically address a case study regarding overt and covert marginalization in an online classroom and will collectively discuss experiences of instructing and problem solving issues of oppression within Social Work distance learning. This case study will focus on a beta test and development process of a fully online course for residential MSSW students. This course included both asynchronous components that students completed during the week and synchronous components via live class sessions online.

In this interactive session, the presenters will engage participants through the use of polling questions, Q&A, and a small-group activity and discussion. Session participants will come away with practical ideas for responding to online class situations involving micro-aggressions and overt acts of –isms.

The presentation features contributions from Anum Iqbal and Francene A. Campbell.
Role of doped Ru in coercivity-enhanced La$_{0.6}$Sr$_{0.4}MnO$_3$ thin film studied by x-ray magnetic circular dichroism
Creators: name: Harano, T.
name: Shibata, G.
name: Ishigami, K.
name: Takashashi, Y.
name: Verma, V. K.
name: Singh, V. R.
name: Kadono, T.
name: Fujimori, A.
name: Takeda, Y.
name: Okane, T.
name: Saitoh, Y.
name: Yamagami, H.
name: Koide, T.
name: Yamada, H.
name: Sawa, A.
name: Kawasaki, M.
name: Tokura, Y.
name: Tanaka, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The coercivity of La$_{1-x}$Sr$_x$MnO$_3$ thin films can be enhanced by Ru substitution for Mn. In order to elucidate its mechanism, we performed soft x-ray absorption and magnetic circular dichroism measurements at the Ru M$_{2,3}$ and Mn L$_{2,3}$ edges. We found that the spin direction of Ru and Mn are opposite and that Ru has a finite orbital magnetic moment. Cluster-model analysis indicated that the finite orbital magnetic moment as well as the reduced spin moment of Ru result from local lattice distortion caused by epitaxial strain from the SrTiO$_3$ substrate in the presence of spin-orbit interaction.
description: 10 pages, 4 figures, 2 tables, accepted Applied Physics Letters
Catene di fornitura basate sulla produzione additiva
Creators: name: Gallinaro, Silvana
Publisher: name: Department of Economics and Business Studies, University of Genoa
Year: 2021
Subjects: Management

description: This article deals with the implementation of additive technologies in supply chains and addresses two open issues: the first one concerns the approaches and methods of evaluating the implementation of additive technologies in supply chains; the second one the relationship between the cost advantages allowed by additive technologies and the demand of additive products. In agreement with some scholars, the quantitative approach to the analysis of manufacturing technologies is recommended, and System Dynamics (SD) method is advised in order to measure the effects produced by the implementation of additive manufacturing in supply chains. SD models, simulates and, therefore, helps to understand the dynamics of conventional and additive manufacturing based supply chains. Cost structures can be built on basis of supply chains dynamic models, each of which refers to a different production technology, and used in comparative assessments. The supply chain modeling and simulation is an extension of Virtual Manufacturing to the entire value creation system. In this article, no mathematical formalization of supply chain models is suggested, but rather a method of 'capturing' the variables for value chain modeling is proposed and a decision-making process for choosing the AM option is advised. The aim of this article is twofold, seeking to weaken two hypotheses concerning additive manufacturing-based supply chains advanced by several scholars and found in literature. Firstly, the hypothesis of additive supply chain superiority compared to conventional supply chain based on qualitative evidence of the advantages that additive technologies generate in business and supply chains; secondly, the hypothesis of non-reachability of economies of scale by means of additive machines. According to the latter, the additive machines would be efficient only at a low volume of demand and production, and the convenience to use them would decrease with increasing demand. This article otherwise argues that additive machines are potentially able to achieve economies of scale; furthermore, that they can be implemented only after the quantitative measurement of the possible effects they can generate to the level of business and supply chain. In the future the advancement in technological development will lead to an improvement of additive machine technical characteristics on which economies of scale themselves depend - such as production time and qualitative standardization of products. This will likely allow implementing additive technologies for large-scale production.
“I Love You Too, Boo.” The Role of City Government Employees In Serving, Loving and Protecting Youth in Chicago
Creators: name: Greco, Mia
Publisher: name: University of Chicago
Year: 2019
Subjects: subject: city government employees
subject: youth development
subject: youth policy
subject: youth programs

description: Every day, thousands of local government employees across the country serve, support and protect vulnerable youth in administering legislative policies and public programs. Unfortunately, little research has focused specifically on the role of these employees in implementing youth policies and programs, and even fewer studies have translated employees’ experiences into valuable lessons for the field of youth policy. To address this gap in the literature, this report analyzes the results of interviews with twelve City of Chicago government employees, each of whom work in child, family or youth programs, and explores their day-to-day experiences serving Chicago youth. Interview results find that the rise of the youth programs depended heavily on financial and political support from the mayor, as well as on the City government’s operation as a service funder. The ongoing success of the programs, on the other hand, relied on expert frontline staff and longterm mayoral support. This report concludes with four youth policy recommendations, and ultimately shows how local government employees’ nuanced policy knowledge can and should be used more effectively to inform youth policy decisions in the future.
In-plane magnetic field dependence of cyclotron relaxation time in a Si two-dimensional electron system
Creators: name: Chiba, Tasuku
name: Masutomi, Ryuichi
name: Sawano, Kentarou
name: Shiraki, Yasuhiro
name: Okamoto, Tohru
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Cyclotron resonance of two-dimensional electrons is studied for a high-mobility Si/SiGe quantum well in the presence of an in-plane magnetic field, which induces spin polarization. The relaxation time $τ_{CR}$ shows a negative in-plane magnetic field dependence, which is similar to that of the transport scattering time $τ_t$ obtained from dc resistivity. The resonance magnetic field shows an unexpected negative shift with increasing in-plane magnetic field.
description: 3 pages, 3 figures
title: Migration and Depressive Symptoms in Migrant-sending Areas: Findings from the Survey of Internal Migration and Health in China
Creators: name: Lu, Yao
name: Hu, Peifeng
name: Treiman, Donald J.
Publisher: name: Columbia University
Year: 2012
Subjects: Mental health
Families
Industrial relations
Social sciences--Research
Asians

description: Objectives - China has experienced large-scale internal migration and growing mental health disorders. Limited research has examined the relationship between the two processes. We examined the association between labor out-migration and depressive symptoms of family members left behind in migrant-sending areas.
Methods - We conducted a multistage probability sample survey of Chinese adults in 2008 (“Internal Migration and Health in China”), including 787 people in rural migrant-sending areas. To study whether adults in out-migrant households were more likely to experience depressive symptoms (CES-D) than were adults in non-migrant households, we used multivariate regressions and adjusted for a wide range of confounding factors and for the complex sampling design.
Results - Adults in households with labor out-migrants were more likely to report depressive symptoms than those in households without out-migrants, presumably a result of the absence of family members. However, monetary remittances from labor migrants buffered the mental health costs of out-migration.
Conclusions - Labor out-migration has important consequences for the mental health in migrant-sending communities. There is an urgent need to address the psychological costs of migration and to promote regular remittances.
Periodic magnetic curves in elliptic Sasakian space forms
Creators: name: Inoguchi, Jun-ichi
name: Munteanu, Marian Ioan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C15, 53C25, 53C30, 37J45, 53C80

description: It is an interesting question whether a given equation of motion has a periodic solution or not, and in the positive case to describe them. We investigate periodic magnetic curves in elliptic Sasakian space forms and we obtain a quantization principle for periodic magnetic flowlines on Berger spheres. We give a criterion for periodicity of magnetic curves on the unit sphere ${\mathbb{S}}^3$.
description: 14 pages, 3 figures
Spin current source based on a quantum point contact with local spin-orbit interaction
Creators: name: Nowak, M. P.
name: Szafran, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Proposal for construction of a source of spin-polarized current based on quantum point contact with local spin-orbit interaction is presented. We show that spin-orbit interaction present within the narrowing acts like a spin filter. The spin polarization of the current is discussed as a function of the Fermi energy and the width of the quantum point contact.
description: The following article appeared in Appl. Phys. Lett. 103, 202404 (2013) and may be found at http://dx.doi.org/10.1063/1.4830372. Copyright (2013) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics
title: 글로벌 혁신지수 2024 :
title: 개요
titleType: Subtitle
Creators: name: World Intellectual Property Organization.
name: Dutta, Soumitra.
name: Lanvin, Bruno.
name: Rivera León, Lorena.
name: Wunsch-Vincent, Sacha.
Publisher: name: World Intellectual Property Organization,
Year: 0
Subjects: Innovations
Technological innovations
Supply Chain
COVID-19

description: 글로벌 혁신지수(GII) 2024 개요는 'GII 2024: 불확실성에 직면한 혁신' 보고서 전체본에 소개된 주요 부분과 결과를 보여 준다. GII 2023은 132개국의 혁신 성과에 순위를 매기고 각국의 강점과 약점을 조명하여 글로벌 혁신을 주도하는 국가를 제시한다. 이와 더불어, GII 2024은 세계 상위 100개 과학기술 클러스터를 살펴본다.
Probing the Spin Pumping Mechanism: Exchange Coupling with Exponential Decay in Y3Fe5O12/barrier/Pt Heterostructures
Creators: name: Du, C. H.
name: Wang, H. L.
name: Pu, Y.
name: Meyer, T. L.
name: Woodward, P. M.
name: Yang, F. Y.
name: Hammel, P. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferromagnetic resonance driven spin pumping of pure spin currents from a ferromagnet into a nonmagnetic material promises new spin-functional devices with low energy consumption. The mechanism of spin pumping is under intense investigation and it is widely believed that exchange interaction between the ferromagnet and nonmagnetic material is responsible for this phenomenon. We observe a thousand-fold exponential decay of the spin pumping from 20-nm thick Y3Fe5O12 films to platinum across insulating barriers, from which the exponential decay lengths of 0.16 and 0.23 nm are extracted for oxide barriers with band gaps of 4.93 eV and 2.36 eV, respectively. This prototypical signature of quantum tunneling through a barrier underscores the importance of exchange coupling for spin pumping and reveals its dependence on the characteristics of the barrier material.
description: 19 papges, 5 figures
Superconducting current and proximity effect in ABA and ABC multilayer graphene Josephson junctions
Creators: name: Munoz, W. A.
name: Covaci, L.
name: Peeters, F. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using a numerical tight-binding approach based on the Chebyshev-Bogoliubov-de Gennes method we describe Josephson junctions made of multilayer graphene contacted by top superconducting gates. Both Bernal (ABA) and rhombohedral (ABC) stacking are considered and we find that the type of stacking has a strong effect on the proximity effect and the supercurrent flow. For both cases the pair amplitude shows a polarization between dimer and non-dimer atoms, being more pronounced for rhombohedral stacking. Even though the proximity effect in non-dimer sites is enhanced when compared to single layer graphene, we find that the supercurrent is suppressed. The spatial distribution of the supercurrent shows that for Bernal stacking the current flows only in the top-most layers while for rhombohedral stacking the current flows throughout the whole structure.
description: 5 pages, 4 figures
Measurement errors in entanglement-assisted electron microscopy
Creators: name: Okamoto, Hiroshi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The major resolution-limiting factor in cryoelectron microscopy of unstained biological specimens is radiation damage by the very electrons that are used to probe the specimen structure. To address this problem, an electron microscopy scheme that employs quantum entanglement to enable phase measurement precision beyond the standard quantum limit has recently been proposed {[}Phys. Rev. A \textbf{85}, 043810{]}. Here we identify and examine in detail measurement errors that will arise in the scheme. An emphasis is given to considerations concerning inelastic scattering events because in general schemes assisted with quantum entanglement are known to be highly vulnerable to lossy processes. We find that the amount of error due both to elastic and inelastic scattering processes are acceptable provided that the electron beam geometry is properly designed.
description: 45 pages, 4 figures; See also arXiv1311.2377
Dynamics of second order in time evolution equations with state-dependent delay
Creators: name: Chueshov, Igor
name: Rezounenko, Alexander
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R10, 35B41, 74K20, 93C23

description: We deal with a class of second order in time nonlinear evolution equations with state-dependent delay. This class covers several important PDE models arising in the theory ofnonlinear plates. Our first result states well-posedness in a certain space of functions which are C1 in time. In contrast with the first order models with discrete state-dependent delay this result does not require any compatibility conditions. The solutions constructed generate a dynamical system in a C1-type space over delay time interval. Our next result shows that this dynamical system possesses compact global and exponential attractors of finite fractal dimension. To obtain this result we adapt the recently developed method of quasi-stability estimates.
description: 29 pages
On the effect of perturbation of conditional probabilities in total variation
Creators: name: Abate, Alessandro
name: Redig, Frank
name: Tkachev, Ilya
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G99, 28A35

description: A celebrated result by A. Ionescu Tulcea provides a construction of a probability measure on a product space given a sequence of regular conditional probabilities. We study how the perturbations of the latter in the total variation metric affect the resulting product probability measure.
Design and Construction of a Brain-Like Computer: A New Class of Frequency-Fractal Computing Using Wireless Communication in a Supramolecular Organic, Inorganic System
Creators: name: Ghosh, Subrata
name: Aswani, Krishna
name: Singh, Surabhi
name: Sahu, Satyajit
name: Fujita, Daisuke
name: Bandyopadhyay, Anirban
Publisher: name: arXiv
Year: 2014
Subjects: subject: Emerging Technologies (cs.ET)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Here, we introduce a new class of computer which does not use any circuit or logic gate. In fact, no program needs to be written: it learns by itself and writes its own program to solve a problem. Godels incompleteness argument is explored here to devise an engine where an astronomically large number of IfThen arguments are allowed to grow by self assembly, based on the basic set of arguments written in the system, thus, we explore the beyond Turing path of computing but following a fundamentally different route adopted in the last half a century old non Turing adventures. Our hardware is a multilayered seed structure. If we open the largest seed, which is the final hardware, we find several computing seed structures inside, if we take any of them and open, there are several computing seeds inside. We design and synthesize the smallest seed, the entire multilayered architecture grows by itself. The electromagnetic resonance band of each seed looks similar, but the seeds of any layer shares a common region in its resonance band with inner and upper layer, hence a chain of resonance bands is formed (frequency fractal) connecting the smallest to the largest seed (hence the name invincible rhythm or Ajeya Chhandam in Sanskrit).
description: 73 pages, 23 figures
Evolutionary Information Diffusion over Social Networks
Creators: name: Jiang, Chunxiao
name: Chen, Yan
name: Liu, K. J. Ray
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Social networks have become ubiquitous in our daily life, as such it has attracted great research interests recently. A key challenge is that it is of extremely large-scale with tremendous information flow, creating the phenomenon of "Big Data". Under such a circumstance, understanding information diffusion over social networks has become an important research issue. Most of the existing works on information diffusion analysis are based on either network structure modeling or empirical approach with dataset mining. However, the information diffusion is also heavily influenced by network users' decisions, actions and their socio-economic connections, which is generally ignored in existing works. In this paper, we propose an evolutionary game theoretic framework to model the dynamic information diffusion process in social networks. Specifically, we analyze the framework in uniform degree and non-uniform degree networks and derive the closed-form expressions of the evolutionary stable network states. Moreover, the information diffusion over two special networks, Erdős-Rényi random network and the Barabási-Albert scale-free network, are also highlighted. To verify our theoretical analysis, we conduct experiments by using both synthetic networks and real-world Facebook network, as well as real-world information spreading dataset of Twitter and Memetracker. Experiments shows that the proposed game theoretic framework is effective and practical in modeling the social network users' information forwarding behaviors.
Bi-invariant metric on volume-preserving diffeomorphisms group of a three-dimensional manifold
Creators: name: Smolentsev, N. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58D05, 58D30, 58B20, 58J28

description: We show the existence of a weak bi-invariant symmetric nondegenerate 2-form on the volume-preserving diffeomorphism group of a three-dimensional manifold and study its properties. Despite the fact that the space $\mathcal{D}_μ(M^3)$ is infinite-dimensional, we succeed in defining the signature of the bi-invariant quadric form. It is equal to the $η$-invariant of the manifold $M^3$.
description: 10 pqges
Hermann Sasses Ablehnung der Barmer Theologischen Erklärung vor dem Hintergrund seines Kirchenverständnisses
Creators: name: Breitwieser, Roman
Publisher: name: Lutherische Kirche in der Welt
Year: 1970

description: Lutherische Kirche in der Welt, Bd. 37 (1990): Lutherische Kirche in der Welt, Band 37
Determinants of Household Food Security in Addis Ababa City Administration
Creators: name: Dagne, Estibel
name: Dagne, Estibel
Publisher: name: Unknown
Year: 2022
Subjects: subject: Food Security and Poverty
subject: Public Economics
subject: Determinants
subject: Household
subject: Food Security
subject: Order Logit Model
subject: Addis Ababa

description: In recent years, the prevalence of undernourishment was 30 percent for sub-Saharan Africa, compared with 16 percent for Asia and the Pacific (Ali, 2011). In Ethiopia, almost 40 percent of the total population in the country and 57 percent of Addis Ababa population lives below the international poverty line of US$ 1.25 per day (UNICEF, 2009). This study aims to analyze the determinant of household food secrity in Addis Ababa city administration. Primary data were collected from a survey of 256 households in the selected sub-city, namely Addis Ketema, Arada, and Kolfe Keranio, in the year 2022. Both Purposive and multi-stage cluster random sampling procedures were employed to select study areas and respondents. Descriptive statistics and order logistic regression model were used to test the formulated hypotheses. The result reveals that out of the total sampled households, 25% them were food secured, 13% were mildly food insecure, 26% were moderately food insecure and 36% were severely food insecure. The study indicates that household family size, house ownership, household income, household food source, household asset possession, household awareness on inflation, household access to social protection program, household access to credit and saving and household access to training and supervision on food security have a positive and significant effect on the likelihood of household food security status. However, marital status of household head, employment sector of household head, dependency ratio and household’s nonfood expenditure has a negative and significant influence on household food security status. The study finally suggests that the government in collaboration with financial institutions and NGO should work on sustaining household food security by creating awareness, providing credit, facilitate rural-urban linkage between producer and consumer and work on urban infrastructure improvement. Moreover, the governments also work closely and monitor consumer good suppliers, if possible find a way to subsidize consumable goods to more insecure households and make them to be food secured. Last but not least, keeping this country’s peace will play a crucial role to sustain food security.
description: A Thesis Draft Submitted to the Development Economics Department, College of Finance, Management and Development Studies, Ethiopian Civil Service University, in partial fulfillment of the Requirements for the Degree of Master of Science in Development Economics. Advisor: Amanuel Kussie
Water Absorption from Gas Very Near the Massive Protostar AFGL 2136 IRS 1
Creators: name: Indriolo, Nick
name: Neufeld, D. A.
name: Seifahrt, A.
name: Richter, M. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present ground-based observations of the nu_1 and nu_3 fundamental bands of H2O toward the massive protostar AFGL 2136 IRS 1, identifying absorption features due to 47 different ro-vibrational transitions between 2.468 micron and 2.561 micron. Analysis of these features indicates the absorption arises in warm (T=506+-25 K), very dense (n(H2)>5*10^9 cm^-3) gas, suggesting an origin close to the central protostar. The total column density of warm water is estimated to be N(H2O)=(1.02+-0.02)*10^19 cm^-2, giving a relative abundance of N(H2O)/N(H2)~10^-4. Our study represents the first extensive use of water vapor absorption lines in the near infrared, and demonstrates the utility of such observations in deriving physical parameters.
description: 17 pages, 4 figures, 1 table, accepted for publication in The Astrophysical Journal
Indización de documentos LILACS: revisión general
Creators: name: BIREME/OPS/OMS
name: Machuca Carvajal, Juan Carlos
name: Conceição, Maria Analia
name: Vidili, Ana Lucia
name: Suga, Sueli Mitiko Yano
Publisher: name: Zenodo
Year: 2022
Subjects: Indizacion de documentos
Metodologia LILACS
Indizacion temática

description: Indizacion de Documentos según la Metodología LILACS 2022 Objetivo: Repasar las reglas esenciales de la indización de documentos según la Metodología LILACS, exhibidas en las sesiones virtuales de 2022. Temas tratados: Quiz Importancia de la indización Herramientas de la indización Actualizaciones del DeCS/MeSH Lectura técnica y Proceso de Indización Descriptores Primarios y Secundarios Precodificados, Tipos de Publicación y Calificadores Coordinaciones de Calificadores y Descriptores Ejemplo de indización completa con coordinación Precisión en la indización Fecha: 24 de Noviembre de 2022 Apertura: Sueli Mitiko Yano Suga Presentación: Juan Machuca, Maria Anália Conceição y Ana Lucia Vidili Grabación: https://youtu.be/G07iIvhhE10 Visite la página con toda la información:bit.ly/indizacionLILACS2022
description: {"references": ["https://lilacs.bvsalud.org/es/sesiones-virtuales-lilacs/indizacion-de-documentos-segun-la-metodologia-lilacs-2022/"]}
Exchange bias up to room temperature in the antiferromagnetic bulk hexagonal Mn3Ge
Creators: name: Qian, Jin- Feng
name: Nayak, Ajaya K.
name: Kreiner, Guido
name: Schnelle, Walter
name: Felser, Claudia
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This work reports an exchange bias (EB) effect up to room temperature in the binary intermetallic bulk compound Mn3.04Ge0.96. The sample annealed at 700 K crystallizes in a tetragonal structure with ferromagnetic ordering, whereas, the sample annealed at 1073 K crystallizes in a hexagonal structure with antiferromagnetic ordering. The hexagonal Mn3.04Ge0.96 sample exhibits an EB of around 70 mT at 2 K that continues with a non-zero value up to room temperature. The exchange anisotropy is proposed to be originating from the exchange interaction between the triangular antiferromagnetic host and the embedded ferrimagnetic like clusters. The ferrimagnetic clusters develop when excess Mn atoms occupy empty Ge sites in the original triangular antiferromagnet structure of Mn3Ge.
description: 4 pages, 4 figures
On Scale and Conformal Invariance in Four Dimensions
Creators: name: Dymarsky, Anatoly
name: Komargodski, Zohar
name: Schwimmer, Adam
name: Theisen, Stefan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the implications of scale invariance in four-dimensional quantum field theories. Imposing unitarity, we find that infinitely many matrix elements vanish in a suitable kinematical configuration. This vanishing is a nontrivial necessary condition for conformality. We provide an argument why this is expected to be a sufficient condition as well, thereby linking scale and conformal invariance in unitary theories. We also discuss possible exceptions to our argument.
Improving municipal responsiveness through AI-powered image analysis in E-Government
Creators: name: Vrabie, Catalin
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: J.4

description: Integration of Machine Learning (ML) techniques into public administration marks a new and transformative era for e-government systems. While traditionally e-government studies were focusing on text-based interactions, this one explores the innovative application of ML for image analysis, an approach that enables governments to address citizen petitions more efficiently. By using image classification and object detection algorithms, the model proposed in this article supports public institutions in identifying and fast responding to evidence submitted by citizens in picture format, such as infrastructure issues, environmental concerns or other urban issues that citizens might face. The research also highlights the Jevons Paradox as a critical factor, wherein increased efficiency from the citizen side (especially using mobile platforms and apps) may generate higher demand which should lead to scalable and robust solutions. Using as a case study a Romanian municipality who provided datasets of citizen-submitted images, the author analysed and proved that ML can improve accuracy and responsiveness of public institutions. The findings suggest that adopting ML for e-petition systems can not only enhance citizen participation but also speeding up administrative processes, paving the way for more transparent and effective governance. This study contributes to the discourse on e-government 3.0 by showing the potential of Artificial Intelligence (AI) to transform public service delivery, ensuring sustainable (and scalable) solutions for the growing demands of modern urban governance.
description: 14 pages, 3 figures
Das Nationalbewußtsein der litauischen Lutheraner in Preußisch-Litauen und in Litauen
Creators: name: Hermann, Arthur
Publisher: name: Lutherische Kirche in der Welt
Year: 1970

description: Lutherische Kirche in der Welt, Bd. 35 (1988): Lutherische Kirche in der Welt, Band 35
Coupling of the Local Defect and Magnetic Structure of Wustite, Fe1-xO
Creators: name: Saines, Paul J.
name: Tucker, Matthew G.
name: Keen, David A.
name: Cheetham, Anthony K.
name: Goodwin, Andrew L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The local nuclear and magnetic structure of wustite, Fe1-xO, and the coupling between them, has been examined using reverse Monte Carlo refinements of variable-temperature neutron total scattering data. The results from this analysis suggest that the individual units in a tetrahedral defect cluster are connected along <110> vectors into a Koch-Cohen-like arrangement, with the majority of octahedral vacancies concentrated near these defects. Bond valence calculations indicate a change in the charge distribution on the cations with the charge on the tetrahedral interstitials increasing on cooling. The magnetic structure is more complex than previously thought, corresponding to a non-collinear spin arrangement described by a superposition of a condensed spin wave on the established type-II antiferromagnetic ordering. This leads to an architecture with four groups of cations each with different spin directions. The cations within the interstitial clusters appear to be weakly ferromagnetically coupled and their spins are correlated to the spins of the octahedral cations closest to them. This work not only provides further insight into the local structure of wustite but also a better understanding of the coupling between defect structures and magnetic and charge-ordering in complex materials.
description: 9 pages, 8 figures
Cooling-induced structure formation and evolution in collapsars
Creators: name: Batta, Aldo
name: Lee, William H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The collapse of massive rotating stellar cores and the associated accretion onto the newborn compact object is thought to power long gamma ray bursts (GRBs). The physical scale and dynamics of the accretion disk are initially set by the angular momentum distribution in the progenitor, and the physical conditions make neutrino emission the main cooling agent in the flow. The formation and evolution of structure in these disks is potentially very relevant for the energy release and its time variability, which ultimately imprint on the observed GRB properties. To begin to characterize these, taking into account the three dimensional nature of the problem, we have carried out an initial set of calculations of the collapse of rotating polytropic cores in three dimensions, making use of a pseudo-relativistic potential and a simplified cooling prescription. We focus on the effects of self gravity and cooling on the overall morphology and evolution of the flow for a given rotation rate in the context of the collapsar model. For the typical cooling times expected in such a scenario we observe the appearance of strong instabilities on the cooling time scale following disk formation, which modulate the properties of the flow. Such instabilities, and the interaction they produce between the disk and the central object lead to significant variability in the obtained mass accretion and energy loss rates, which will likely translate into variations in the power of the relativistic outflow that ultimately results in a GRB.
description: 18 pages, 30 figures; submitted to MNRAS, Animations available at: https://sites.google.com/a/astro.unam.mx/animations/