cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
¿Existen garantías para el empleador en el inicio de la negociación colectiva?
Creators: name: Pérez Murcia, Fabiola
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Administración de personal - Legislación
subject: Derechos civiles - Aspectos jurídicos
subject: Negociación - Estudios de caso
subject: Garantías
subject: Empleador
subject: Negociación
subject: Colectiva

description: El ejercicio de la negociación colectiva, fundamental para los trabajadores organizados en sindicatos, supone el uso de buenas prácticas de relacionamiento entre sindicato y empleador, encaminadas a lograr acuerdos colectivos que redunden en el bienestar de los trabajadores y en la sostenibilidad de las empresas; establecer un catálogo o manual de acción resulta imposible, pero debe plantearse el norte que debe seguir el proceso de negociación colectiva, que será determinado finalmente por las herramientas legales existentes y por la construcción de las partes, teniendo como finalidad consolidar el acuerdo colectivo, dejando de lado las irregularidades que resulten contrarias a ese objetivo. No existen garantías para el empleador, frente a las situaciones irregulares que se presentan al inicio de la negociación colectiva, el marco legal general puede considerarse insuficiente frente a fenómenos, y particularidades actuales del ejercicio del derecho (retiro del pliego, abuso del derecho), y las acciones para la reclamación carecen de inmediatez, e idoneidad, para resolver frente a la ilegalidad en la constitución del sindicato, la ilegalidad del pliego, con la celeridad que exige el ejercicio de la negociación y la multa administrativa por negativa a negociar.
description: The exercise of collective bargaining, which is fundamental for workers organized in unions, involves the use of good practices in the relationship between union and employer, aimed at achieving collective agreements that result in the welfare of workers and the sustainability of companies; it is impossible to establish a catalog or manual of action, but it is necessary to establish the direction to be followed by the collective bargaining process, which will ultimately be determined by the existing legal tools and by the construction of the parties, with the purpose of consolidating the collective agreement, leaving aside any irregularities that may be contrary to this objective. There are no guarantees for the employer in the face of irregular situations that arise at the beginning of collective bargaining, the general legal framework can be considered insufficient in the face of current phenomena and particularities of the exercise of the right (withdrawal of the union, abuse of the right), and the actions for the claim lack immediacy and suitability to resolve the illegality of the union's constitution, the illegality of the union's union contract, with the speed required for the exercise of bargaining and the administrative fine for refusal to negotiate.
Auction-Based Distributed Resource Allocation for Cooperation Transmission in Wireless Networks
Creators: name: Huang, Jianwei
name: Han, Zhu
name: Chiang, Mung
name: Poor, H. Vincent
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Cooperative transmission can greatly improve communication system performance by taking advantage of the broadcast nature of wireless channels. Most previous work on resource allocation for cooperation transmission is based on centralized control. In this paper, we propose two share auction mechanisms, the SNR auction and the power auction, to distributively coordinate the resource allocation among users. We prove the existence, uniqueness and effectiveness of the auction results. In particular, the SNR auction leads to a fair resource allocation among users, and the power auction achieves a solution that is close to the efficient allocation.
description: To appear in the Proceedings of the IEEE IEEE Global Communications Conference (GLOBECOM), Washington, DC, November 26 - 30, 2007
Solution of a Linearized Model of Heisenberg's Fundamental Equation II
Creators: name: Brüning, E.
name: Nagamachi, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81T08

description: A linearized version of Heisenberg's fundamental equation is solved, and the solutions satisfy the axioms of a relativistic quantum field theory with a fundamental length.
description: AMS-LaTeX, 28 pages
Eficacia de las garantías constitucionales para la inclusión laboral de las personas en condición de discapacidad en la etapa precontractual del proceso de contratación
Creators: name: Corrales Castro, Angela
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Derecho al trabajo - Legislación
subject: Garantías constitucionales - Aspectos jurídicos
subject: Derechos civiles - Estudios de caso
subject: Inclusión laboral
subject: Personas en condición de discapacidad
subject: Garantías constituciones e igualdad

description: Históricamente, el derecho laboral ha requerido grandes batallas colectivas para lograr las reivindicaciones de los principios que propenden por la igualdad y dignidad de los trabajadores. Gracias a ello, el derecho al trabajo goza de protección constitucional, lo cual puede observarse en la Constitución Política de 1991 y se ratifica en el artículo 25, donde el Estado debe garantizar el trabajo en condiciones dignas y justas. El Estado colombiano ha adquirido magnos compromisos en materia de inclusión social, que se perfila a cerrar brechas de desigualdad y discriminación de las que son objeto las personas en condición discapacidad, así mismo, el Estado pretende incentivar a través de la implementación y materialización de políticas públicas, la inclusión social y laboral de esta población, toda vez que por su condición de vulnerabilidad han sido catalogadas como sujetos de especial protección constitucional, con fundamento en el artículo 13 de la Constitución Política Colombiana de 1991. No obstante lo anterior, se requiere que el Estado colombiano unifique esfuerzos en pro de la promoción, inclusión, incorporación, contratación y readaptación laboral acorde a sus habilidades especiales, singulares y particulares.
description: Historically, labor law has required big collective battles to achieve the demands of the principles that promote the equality and dignity of workers. Thanks to this, the right to work has constitutional protection, which can be observed in the Colombian Political Constitution of 1991 and is ratified in its 25 article, where the State must guarantee work in decent and fair conditions. The Colombian State has acquired great commitments in terms of social inclusion, which aims to close gaps of inequality and discrimination to which people with disabilities are object of. Likewise, the State intends to encourage through the implementation and materialization of public politics, the social and labor inclusion of this population, considered that because to their condition of vulnerability they have been classified as subjects of special constitutional protection, based on article 13 of the Colombian Political Constitution of 1991. Nevertheless, the Colombian State is required to unify efforts in favor of promotion, inclusion, incorporation, hiring and labor readaptation, according to their special, singular and particular abilities.
The story-retellings of preschoolers from differing home-literacy environments
Creators: name: Doiron, Ray
Publisher: name: University of British Columbia
Year: 2010

description: Research into emergent reading behaviors of preschool children has centered on their metalinguistic awareness and developing concepts about print. Emerging at the same time is their sense of story and ability to engage in various storying activities. A causal-comparative study linked these two areas of research by examining the story-retellings of three and four year old children from differing home-literacy environments. Comparison groups were based on age and results taken from an inventory of literacy background. It was expected that four year olds would include more story elements and literary devices and demonstrate more book orientation behaviors in their retelling of a wordless picture book than three year olds. It was predicted that significant differences would be apparent in comparisons of three and four year olds from differing home-literacy environments. Results indicated clear differences by age and statistically significant differences between four year olds from higher and lower home-literacy environments. Differences between three year old groups were in the predicted direction, but were not statistically significant. With evidence that a rich home-literacy environment nurtures more sophisticated storytelling , implications for parents and educators were discussed, as well as future research directions.
Considerations towards quantitative X-ray and neutron tensor tomography: on the validity of linear approximations of dark-field anisotropy
Creators: name: Graetz, Jonas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The validity of two approximative linear tensor models to be used for grating based X-ray or neutron dark-field tensor tomography is investigated in a simulation study. While the dark-field contrast originating from anisotropic microscopic mass distributions has, in a previous study, been confirmed to be in general a non-linear function of two orientations (optical axis and axis of interferometer sensitivity), linear approximations with a reduced parameter space (considering only one of the orientation dependencies) are highly preferable with respect to tomographic volume reconstruction from projections. By regarding isolated volume elements and systematically exploring the full range of possible anisotropies, direct correspondences are drawn between the respective tensors characterizing the complete model used for signal synthesization and the reduced linear models used for reconstruction. The tensors' dominant orientations are found to agree to a typical accuracy of 1°, with their eigenspectra exhibiting fuzzy, yet almost linear relations among each other. Although modeling only either of two orientation dependencies for the purpose of tensor reconstruction, the data acquisition scheme must nevertheless adequately address both dependencies.
description: 11 pages, 8 figures, theoretical background in context of a dissertation
Phenotypic plasticity and adaptation to stable and variable temp.xls
Creators: name: Sekajova, Zuzana
Publisher: name: figshare
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: We exposed outbred SP8 strain to the 30 generations of experimental evolution in one of five regime: Control 20°C, in which the temperature was constant 20°C throughout 30 generations, Warm 25°C in which the temperature was 25°C for 30 generations, Increased warming in which the temperature gradually raised from 20°C to 25°C so that every 2.13 days temperature increased by 0.1°C, Slow temperature cycles where the temperature fluctuated every 10 generations between 20°C and 25°C, and Fast temperature cycles were the temperature fluctuated between 20°C and 25°C every two generations. Each regime was replicated six times. The experimental evolution procedure has been described in detail in Lind, et al. (2020).
Phenotypic assays Worms were maintained for 2 generations in a common garden in 20°C. The generations were then tested for development time, size at maturity and growth rate in both 20°C and 25°C. Ten female worms (day 2 of adulthood) per population were left to lay eggs for 1 h of synchronized egg-laying and development time of the offspring females was recorded. Once 61 h (in 20°C) or 41 h (in 25°C) has passed, the plates were checked hourly and all mature females were collected and photographed using Lumenera Infinity2-5C digital microscope camera. The photographs were used to estimate size at maturity and a development time which was scored as number of hours between egg laying and the sexual maturity. Growth rate was calculated as log(size at maturity)/development time (mm2 h-1). To avoid using negative numbers, size at maturity was multiplied by a constant of 100.
References: Lind, M. I., Zwoinska, M. K., Andersson, J., Carlsson, H., Krieg, T., Larva, T., & Maklakov, A. A. (2020). Environmental variation mediates the evolution of anticipatory parental effects. Evolution Letters, 4(4), 371–381. https://doi.org/doi:10.1002/evl3.177
Preliminary survey results from academic librarians and biology professors on teaching and using pirate websites.
Creators: name: Kipnis, Daniel G.
name: Spielman, Stephanie J.
Publisher: name: Zenodo
Year: 2021
Subjects: shadow web sites, pirate web sites, biologist, librarian

description: It took a catastrophic global pandemic to finally make COVID scientific research freely available full-text. Our lighting talk will share preliminary survey results sent to biology professors and academic librarians in North America on their use of pirate websites. With the never-ending rising cost of journal subscriptions, shrinking library budgets and a need for accessing full-text primary literature; pirate websites have become an alternative means for accessing scientific paywalled literature (when a global pandemic isn’t happening and publishers are making COVID literature open access). Sci-hub is the most popular global pirate website and continues to face legal challenges. Our research aims to gather feedback from academic librarians and biology professors to see if pirate websites are being discussed and or taught as well as personal usage and general knowledge of pirate websites. The future of scholarly communication is hindered due to existing paywalls and the slow advancement of open access mandates. As seen from the Coronavirus pandemic, the scientific literature is not always available and the emergence of pirate websites is another factor to consider with the future of scholarly communication. 
Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
Creators: name: Mostofi, A. A.
name: Yates, J. R.
name: Lee, Y. -S.
name: Souza, I.
name: Vanderbilt, D.
name: Marzari, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present Wannier90, a program for calculating maximally-localised Wannier functions (MLWF) from a set of Bloch energy bands that may or may not be attached to or mixed with other bands. The formalism works by minimising the total spread of the MLWF in real space. This done in the space of unitary matrices that describe rotations of the Bloch bands at each k-point. As a result, Wannier90 is independent of the basis set used in the underlying calculation to obtain the Bloch states. Therefore, it may be interfaced straightforwardly to any electronic structure code. The locality of MLWF can be exploited to compute band-structure, density of states and Fermi surfaces at modest computational cost. Furthermore, Wannier90 is able to output MLWF for visualisation and other post-processing purposes. Wannier functions are already used in a wide variety of applications. These include analysis of chemical bonding in real space; calculation of dielectric properties via the modern theory of polarisation; and as an accurate and minimal basis set in the construction of model Hamiltonians for large-scale systems, in linear-scaling quantum Monte Carlo calculations, and for efficient computation of material properties, such as the anomalous Hall coefficient. Wannier90 is freely available under the GNU General Public License from http://www.wannier.org/
description: Submitted to Computer Physics Communications
Cumplimiento del deber de información que tienen los establecimientos bancarios en los contratos de apertura de crédito
Creators: name: Oñoro Barrios, Andrés Felipe
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Derecho bancario - Colombia
subject: Contratos y responsabilidad
subject: Crédito - Legislación
subject: Deber de información
subject: Contrato de apertura de crédito
subject: Educación financiera
subject: Buena fe contractual

description: El propósito es analizar la consagración del deber de la información en la normativa que protege a los consumidores de servicios financieros y como este desde la perspectiva del contrato de apertura de crédito, es acatado y puesto en práctica por parte de los establecimientos bancarios que se encuentran bajo la supervisión de la (SFC). Las actividades financieras y crediticias se consideran de interés público, lo cual obliga a los proveedores financieros de los contratos de apertura de crédito a cumplir con la obligación de brindar a los consumidores información en las etapas precontractual y contractual. La investigación se centra, primero, en un análisis normativo para establecer cuáles son los fundamentos jurídicos que obligan a las entidades bancarias, que celebran el tipo de contratos estudiados en esta investigación, a cumplir con el del deber de información. Se estudia el contexto de los contratos de apertura de crédito, explicando en qué consisten y cuáles son las obligaciones de los establecimientos bancarios en el deber de suministrar información en las etapas precontractuales y contractuales. Finalmente, se realiza un análisis aplicado a casos concretos, considerados representativos por parte del autor, en los cuales se hayan presentado presuntos incumplimientos al deber de información.
description: The purpose is to analyze the enshrinement of the duty of information in the regulations that protect consumers of financial services and how this, from the perspective of the credit opening contract, is complied with and put into practice by the banking establishments that are located under the supervision of the (SFC). Financial and credit activities are considered to be of public interest, which obliges the financial providers of credit opening contracts to comply with the obligation to provide consumers with information in the pre-contractual and contractual stages. The research focuses, first, on a regulatory analysis to establish the legal foundations that oblige banking entities, which enter into the type of contracts studied in this research, to comply with the duty of information. The context of credit opening contracts is studied, explaining what they consist of and what the obligations of banking establishments are in the duty to provide information in the pre-contractual and contractual stages. Finally, an analysis is carried out applied to specific cases, considered representative by the author, in which alleged breaches of the duty of information have occurred.
The Cold Dust Content of the Nearby Galaxies IC 5325, NGC 7496, NGC 7590, and NGC 7599
Creators: name: Singh, Swapnil
name: Ashby, M. L. N.
name: Vig, Sarita
name: Ghosh, S. K.
name: Jarrett, T.
name: Crawford, T. M.
name: Malkan, Matthew A.
name: Archipley, M.
name: Vieira, J. D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Star-forming galaxies are rich reservoirs of dust, both warm and cold. But the cold dust emission is faint alongside the relatively bright and ubiquitous warm dust emission. Recently, evidence for a very cold dust component has also been revealed via millimeter/submillimeter photometry of some galaxies. This component, despite being the most massive of the three dust components in star-forming galaxies, is by virtue of its very low temperature, faint and hard to detect together with the relatively bright emission from warmer dust. Here we analyze the dust content of a carefully selected sample of four galaxies detected by IRAS, WISE, and SPT, whose spectral energy distributions (SEDs) were modeled to constrain their potential cold dust content. Low-frequency radio observations using the GMRT were carried out to segregate cold dust emission from non-thermal emission in millimeter/submillimeter wavebands. We also carried out AstroSat/UVIT observations for some galaxies to constrain their SED at shorter wavelengths so as to enforce energy balance for the SED modeling. We constructed their SEDs across a vast wavelength range (extending from ultraviolet to radio frequencies) by assembling global photometry from GALEX FUV+NUV, UVIT, Johnson BRI, 2MASS, WISE, IRAC, IRAS, AKARI, ISOPHOT, Planck HFI, SPT, and GMRT. The SEDs were modeled with CIGALE to estimate their basic properties, in particular to constrain the masses of their total and very cold dust components. Although the galaxies' dust masses are dominated by warmer dust, there are hints of very cold dust in two of the targets, NGC 7496 and NGC 7590.
description: 19 pages, 5 figures, accepted in MNRAS
Mode Regularization for N=1,2 SUSY Sigma Model
Creators: name: Bonezzi, Roberto
name: Falconi, Marco
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Worldline N=1 and N=2 supersymmetric sigma models in curved background are useful to describe spin one-half and spin one particles coupled to external gravity, respectively. It is well known that worldline path integrals in curved space require regularization: we present here the mode-regularization for these models, finding in particular the corresponding counterterms, both in the case of flat and curved indices for worldline fermions. For N=1, using curved indices we find a contribution to the counterterm from the fermions that cancels the contribution of the bosons, leading to a vanishing total counterterm and thus preserving the covariance and supersymmetry of the classical action. Conversely in the case of N=2 supersymmetries we obtain a non-covariant counterterm with both curved and flat indices. This work completes the analysis of the known regularization schemes for N=1,2 nonlinear sigma models in one dimension.
description: 15 pages
Propuesta para delimitar el alcance del criterio de ‘materialidad’ del régimen de revelación de información relevante de los emisores en el mercado público de valores colombiano
Creators: name: Múnera Palacio, David
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Valores bancarios - Estudios de caso
subject: Derecho bancario - Colombia
subject: Mercado monetario - Legislación
subject: Emisores de valores
subject: Revelación de información
subject: Transparencia
subject: Mercado de valores
subject: Información relevante

description: En el presente trabajo se hace un estudio del alcance del criterio de materialidad del nuevo régimen de revelación de información relevante de los emisores de valores en Colombia, consagrado en el Decreto 151 de 2021. Primero, se realiza una descripción del concepto de transparencia en los mercados de valores, explicando su origen y fundamento, haciendo un énfasis en el papel que cumple no solo en el mercado de valores sino también de cara a los derechos de los inversionistas. Se presenta a su vez un análisis de los riesgos potenciales asociados a la aplicación del 'criterio de materialidad' en la revelación de información relevante y su posible impacto en los emisores, los inversionistas y la Superintendencia Financiera de Colombia. Finalmente, se presentan unas propuestas para mitigar y/o gestionar algunos de los riesgos idenfiicados, aplicando otras normas que complementan el análisis del criterio de materialidad y además elementos del principio de buena fe como la diligencia y prudencia.
description: This paper studies the scope of the materiality criterion (criterio de materialidad) of the new disclosure regime far issuers of securities in Colombia, included in Decree 151 of 2021. First, a description of the concept of transparency in the securities markets is made, explaining its origin and basis, emphasizing the role it plays not only in the securities market but also in relation to the rights of investors. Then, an analysis is presented of the potential risks associated to the application of the 'materiality criterion' in the disclosure of information and its possible impact on issuers, investors and the Financia! Superintendency of Colombia. Finally, the author presents sorne proposals to mitigate and/or manage the identified risks, applying other rules that complement the analysis of the materiality criterion and elements of the principie of good faith such as diligence and prudence.
k-dependent SU(4) model of high-temperature superconductivity and its coherent-state solutions
Creators: name: Sun, Yang
name: Guidry, Mike
name: Wu, Cheng-Li
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We extend the SU(4) model [1-5] for high-Tc superconductivity to an SU(4)k model that permits explicit momentum (k) dependence in predicted observables. We derive and solve gap equations that depend on k, temperature, and doping from the SU(4)k coherent states, and show that the new SU(4)k model reduces to the original SU(4) model for observables that do not depend explicitly on momentum. The results of the SU(4)k model are relevant for experiments such as ARPES that detect explicitly k-dependent properties. The present SU(4)k model describes quantitatively the pseudogap temperature scale and may explain why the ARPES-measured T* along the anti-nodal direction is larger than other measurements that do not resolve momentum. It also provides an immediate microscopic explanation for Fermi arcs observed in the pseudogap region. In addition, the model leads to a prediction that even in the underdoped regime, there exist doping-dependent windows around nodal points in the k-space, where antiferromagnetism may be completely suppressed for all doping fractions, permitting pure superconducting states to exist.
description: 10 pages, 7 figures
Theory of Topological Corner State Laser in Kagome Waveguide Arrays
Creators: name: Zhong, Hua
name: Kartashov, Yaroslav V.
name: Szameit, Alexander
name: Li, Yongdong
name: Liu, Chunliang
name: Zhang, Yiqi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In comparison with conventional lasers, topological lasers are more robust and can be immune to disorder or de-fects if lasing occurs in topologically protected states. Previously reported topological lasers were almost exclu-sively based on the first-order photonic topological insulators. Here, we show that lasing can be achieved in the zero-dimensional corner state in a second-order photonic topological insulator, which is based on Kagome wave-guide array with a rhombic configuration. If gain is present in the corner of the structure, where topological corner state resides, stable lasing in this state is achieved, with lowest possible threshold, in the presence of uniform loss-es and two-photon absorption. When gain acts in other corners of the structure, lasing may occur in edge or bulk states, but it requires substantially larger thresholds and transition to stable lasing occurs over much larger propa-gation distances, sometimes due to instabilities, which are absent for lasing in corner states. We find that increasing two-photon absorption generally plays strong stabilizing action for nonlinear lasing states. The transition to stable lasing stimulated by noisy inputs is illustrated. Our work demonstrates the realistic setting for corner state laser based on higher-order topological insulator realised with waveguide arrays.
description: 20 pages
Data_ Plasticity and adaptation to stable and variable temp.xls
Creators: name: Sekajova, Zuzana
Publisher: name: figshare
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: We exposed outbred SP8 strain to the 30 generations of experimental evolution in one of five regime: Control 20°C, in which the temperature was constant 20°C throughout 30 generations, Warm 25°C in which the temperature was 25°C for 30 generations, Increased warming in which the temperature gradually raised from 20°C to 25°C so that every 2.13 days temperature increased by 0.1°C, Slow temperature cycles where the temperature fluctuated every 10 generations between 20°C and 25°C, and Fast temperature cycles were the temperature fluctuated between 20°C and 25°C every two generations. Each regime was replicated six times. The experimental evolution procedure has been described in detail in Lind, et al. (2020).
Phenotypic assays Worms were maintained for 2 generations in a common garden in 20°C. The generations were then tested for development time, size at maturity and growth rate in both 20°C and 25°C. Ten female worms (day 2 of adulthood) per population were left to lay eggs for 1 h of synchronized egg-laying and development time of the offspring females was recorded. Once 61 h (in 20°C) or 41 h (in 25°C) has passed, the plates were checked hourly and all mature females were collected and photographed using Lumenera Infinity2-5C digital microscope camera. The photographs were used to estimate size at maturity and a development time which was scored as number of hours between egg laying and the sexual maturity. Growth rate was calculated as log(size at maturity)/development time (mm2 h-1). To avoid using negative numbers, size at maturity was multiplied by a constant of 100.
References: Lind, M. I., Zwoinska, M. K., Andersson, J., Carlsson, H., Krieg, T., Larva, T., & Maklakov, A. A. (2020). Environmental variation mediates the evolution of anticipatory parental effects. Evolution Letters, 4(4), 371–381. https://doi.org/doi:10.1002/evl3.177
The Neutron-Rich Edge of the Nuclear Landscape. Experiment and Theory
Creators: name: Nowacki, Frédéric
name: Obertelli, Alexandre
name: Poves, Alfredo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this review, we describe the experimental facilities and methods which make it possible to produce and measure the properties of the extreme neutron rich nuclei. We then develop the theoretical framework that will accompany us along the review; the shell-model approach with large scale configuration interaction (mixing) SM-CI, with special emphasis in the competition between the spherical mean field and the nuclear correlations (mainly pairing and quadrupole-quadrupole). The symmetry properties of the latter are treated in detail as they will show to be of great heuristic value. We explore in detail the Islands of Inversion (IoI) at N=20 and N=28. We make a side excursion into the heavier Calcium and Potassium isotopes, to discuss current issues on shell evolution and new magic numbers far from stability. We visit the N=40 Island of Inversion. We discuss the doubly magic nucleus 78Ni, its shape coexistence and the prospect of a new IoI at N=50 below Z=28. We examine the N=70 and N=82 neutron closures approaching the neutron drip line.
The Role of Evolutionary Age and Metallicity in the Formation of Classical Be Circumstellar Disks II. Assessing the Evolutionary Nature of Candidate Disk Systems
Creators: name: Wisniewski, John P.
name: Bjorkman, Karen S.
name: Magalhaes, Antonio M.
name: Bjorkman, Jon E.
name: Meade, Marilyn R.
name: Pereyra, Antonio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged version) We present the first detailed imaging polarization observations of six SMC and six LMC clusters, known to have large populations of B-type stars which exhibit excess H-alpha emission, to constrain the evolutionary status of these stars and hence better establish links between the onset of disk formation in classical Be stars and cluster age and/or metallicity. The wavelength dependence of our intrinsic polarization data provides a diagnostic of the dominant and any secondary polarigenic agents present, enabling us to discriminate pure gas disk systems, i.e. classical Be stars, from composite gas plus dust disk systems, i.e. Herbig Ae/Be or B[e] stars. Our intrinsic polarization results, along with available near-IR color information, strongly supports the suggestion of Wisniewski et al. that classical Be stars are present in clusters of age 5-8 Myr, and contradict assertions that the Be phenomenon only develops in the second half of a B star's main sequence lifetime, i.e. no earlier than 10 Myr. Comparing the polarimetric properties of our dataset to a similar survey of Galactic classical Be stars, we find that the prevalence of polarimetric Balmer jump signatures decreases with metallicity. We speculate that these results might indicate that either it is more difficult to form large disk systems in low metallicity environments, or that the average disk temperature is higher in these low metallicity environments. We have characterized the polarimetric signatures of all candidate Be stars in our data sample and find ~25% are unlikely to arise from true classical Be star-disk systems.
description: 30 pages, accepted by ApJ, emulateapj5 format
Multidimensional vulnerability indicators in European data sets (Deliverable 13.2)
Creators: name: Guzi, Martin
name: Kováčová, Lucia
name: Kahanec, Martin
Publisher: name: Zenodo
Year: 2021

description: This working paper illustrates a multidimensional vulnerability approach using EU-SILC data. The data set provides large sample sizes per country allowing to identify vulnerable groups in a reliable way. The approach is based on the intersectional approach of vulnerability meaning that cumulation of disadvantages may lead to adverse labour market outcomes for different vulnerable groups. The indicators consider (1) two types of vulnerable groups, particularly single parents and elderly; (2) three multidimensional measures of vulnerability namely economic vulnerability (income poverty), housing quality (overcrowded households) and social deprivation. The paper serves to highlight multidimensional nature of vulnerability in the labour market that should be taken into account in the academic research as well as policymaking at different levels of governance.
Bohm's quantum "non-mechanics": An alternative quantum theory with its own ontology?
Creators: name: Sanz, A. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The ontological aspect of Bohmian mechanics, as a hidden-variable theory that provides us with an objective description of a quantum world without observers, is widely known. Yet its practicality is getting more and more acceptance and relevance, for it has proven to be an efficient and useful resource to tackle, explore, describe and explain such phenomena. This practical aspect emerges precisely when the pragmatic application of the formalism prevails over any other interpretational question, still a matter of debate and controversy. In this regard, the purpose here is to show and discuss how Bohmian mechanics emphasizes in a natural manner a series of dynamical features difficult to find out through other quantum approaches. This arises from the fact that Bohmian mechanics allows us to establish a direct link between the dynamics exhibited by quantum systems and the local variations of the quantum phase associated with their state. To illustrate these facts, simple models of two physically insightful quantum phenomena have been chosen, namely, the dispersion of a free Gaussian wave packet and Young-type two-slit interference. As it is shown, the outcomes from their analysis render a novel, alternative understanding of the dynamics displayed by these quantum phenomena in terms of the underlying local velocity field that connects the probability density with the quantum flux. This field, nothing but the so-called guidance condition in standard Bohmian mechanics, thus acquires a prominent role to understand quantum dynamics, as the mechanism responsible for such dynamics. This goes beyond the passive role typically assigned to this field in Bohmian mechanics, where traditionally trajectories and quantum potentials have received more attention instead.
description: 36 pages, 4 figures
The Szekeres Swiss Cheese model and the CMB observations
Creators: name: Bolejko, Krzysztof
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents the application of the Szekeres Swiss Cheese model to the analysis of observations of the cosmic microwave background (CMB) radiation. The impact of inhomogeneous matter distribution on the CMB observations is in most cases studied within the linear perturbations of the Friedmann model. However, since the density contrast and the Weyl curvature within the cosmic structures are large, this issue is worth studying using another approach. The Szekeres model is an inhomogeneous, non-symmetrical and exact solution of the Einstein equations. In this model, light propagation and matter evolution can be exactly calculated, without such approximations as small amplitude of the density contrast. This allows to examine in more realistic manner the contribution of the light propagation effect to the measured CMB temperature fluctuations. The results of such analysis show that small-scale, non-linear inhomogeneities induce, via Rees-Sciama effect, temperature fluctuations of amplitude $10^{-7} - 10^{-5}$ on angular scale $θ< 0.24^{\circ}$ ($\ell > 750$). This is still much smaller than the measured temperature fluctuations on this angular scale.However, local and uncompensated inhomogeneities can induce temperature fluctuations of amplitude as large as $10^{-3}$, and thus can be responsible the low multipoles anomalies observed in the angular CMB power spectrum.
description: 18 pages, 6 figures; new models added; discussion of the Weyl curvature added; improved description of models
Party-system polarisation, legislative institutions and cabinet survival in 28 parliamentary democracies, 1945–2019
Creators: name: Bergmann, Henning
name: Bäck, Hanna
name: Saalfeld, Thomas
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology

description: The resurgence of radical and populist parties has stimulated renewed discussions about the resilience of parliamentary democracy in Europe. This work contributes to this debate by analysing the extent to which positive parliamentarism, the prime minister’s parliamentary dissolution powers, the government’s power to table votes of confidence and the majority requirements for votes of no confidence serve as ‘shock absorbers’ moderating the effect of ideological polarisation in European parliaments. Fitting several Cox Proportional Hazards models to data for 752 cabinets from 28 European democracies between 1945 and 2019, the well-established finding that the restrictiveness of the constructive vote of no confidence mitigates the destabilising effect of strong extreme parties on non-electoral cabinet replacements is confirmed. More counter-intuitively, the absence of positive parliamentarism reduces the risk of non-electoral cabinet replacements when ideologically extreme parties are strong.
Hydrodynamic models of astrophysical wormholes. The general concept
Creators: name: Churilov, Semyon
name: Stepanyants, Yury
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study hydrodynamic models of astrophysical wormholes when water waves can be amplified in the course of propagation between two critical points where wave and current speeds coincide. Such models can be realised in shallow laboratory ducts with variable width and depths. In this paper, we derive the basic set of equations for shallow water waves on the spatially variable flow in the duct of a variable cross-section and present the asymptotic analysis of solutions in the neighbourhood of the critical points. The critical points mimic either the black hole (BH) horizon if the flow transits from the subcritical to the supercritical regime, or the white hole (WH) horizon if the flow transits from the supercritical to the subcritical regime. We study then, the wave propagation in the flow with two horizons when the flow transits first the BH horizon and then the WH one. The region between the horizons mimics a wormhole in general relativity. For the sake of completeness, we also study the successive transition through WH and BH horizons. The theoretical results are illustrated by numerical calculations of wave propagation in both these arrangements. It is shown that the wave amplification after passing the active zone between the horizons takes place in BH{WH arrangements only and can occur for different relationships between the subcritical and supercritical flow velocities. The frequency dependence of the amplification factor is obtained and quantified in terms of the velocity ratio within and outside the \wormhole domain". In the next paper, we plan to present exact solutions for the specific velocity profile.
description: 49 pages, 18 figures, 2 tables
An analysis of the development of a literacy and life skills curriculum for native adults
Creators: name: Mogan, Susan Barbara
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to analyse the development of the Native Literacy and Life Skills Curriculum Guidelines from two perspectives: a planning perspective and a teaching and learning perspective. This study was undertaken to contribute to the literature on program development for Native adults. Further, the intent was to draw attention to the fact that according to 1981 census data, 34.5% of Canadian Native adults are considered functionally illiterate. The field research approach was used to analyse the development of the Guidelines. This approach was appropriate because research in the area of Native programming is at an exploratory stage where few, if any, theories or hypotheses could be tested using quantitative approaches. Field research is well suited to exploratory projects. Two methods were used to collect data, interviews and document analysis. Jarvis' curriculum planning model for the education of adults was used to collect and analyse interview and document data. Data analysis involved sorting information from interviews and documents according to a chronological sequence of events that occurred in the curriculum development project. The interview and document data were categorized into the 10 factors outlined in Jarvis' model. Conclusions were drawn regarding the outcomes of the project, the curriculum development process and the data collection process. Conclusions from the Native Literacy and Life Skills Curriculum Guidelines project had direct implications for curriculum developers, policy makers and researchers. It was found that a communication network is necessary in curriculum planning, that financing is a critical issue in the development process and that a curriculum planning model is a helpful tool for developing a curriculum. This research highlights the need for a policy that includes the provision for the development and implementation of a series of programs to upgrade the education levels of Native adults. These programs must also provide Native adults with career opportunities to enable them to fully participate in today's society.
Prime ministers, the vote of confidence and the management of coalition terminations between elections
Creators: name: Schleiter, Petra
name: Evans, Georgina
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: When coalition leaders have powers to call a vote of confidence, they can invoke the threat of government resignation or early elections, and raise other actors’ costs of voting down the government. In this paper, this insight is applied to coalition replacements. The procedure, argued here, allows leaders to reduce their risk of losing office between elections by (i) managing the coalition’s cohesion and (ii) denying parliament the option of replacing the government without intervening elections. Premiers, moreover, can be expected to use these powers for partisan benefit, protecting primarily their own rather than their coalition partners’ incumbency status. To test this expectation, a novel measure of vote of confidence powers is applied to the analysis of coalition replacement risks in 20 European democracies. The results show that premiers with extensive confidence powers significantly reduce their risk of replacement between elections while their coalition partners do not benefit equally.
Problemáticas y perspectivas de los sistemas de alumbrado público en Colombia
Creators: name: Duque Valencia, Camilo Antonio
Publisher: name: Universidad Externado de Colombia
Year: 2024
Subjects: subject: Servicios públicos domiciliarios
subject: Alumbrado - Legislación
subject: Consumo de energía - Colombia
subject: Alumbrado público
subject: Led
subject: Luminarias
subject: Modernización
subject: Ahorro

description: Los sistemas de alumbrado público han generado gran interés para la comunidad en general, ya que estos traen consigo una perspectiva de seguridad y ayudan a dinamizar la economía, pues permite que el comercio se pueda desarrollar sin importar la hora del día, es por esta razón que conforme con la revolución en materia energética que se ha generado en el mundo, Colombia ha establecido normatividad tendiente a garantizar un mejoramiento en la prestación de este servicio público, sin embargo se pudo evidenciar que existen grandes debilidades en la implementación de estos sistemas de alumbrado público, incluyendo normatividad técnica como lo es el RETIE o el RETILAP, normatividad en materia de eficiencia energética, así como en impuesto de alumbrado publico, lo que busca asegurar una prestación cada día mas eficiente, evidenciándose serias debilidades en la implementación de procesos de modernización, por lo cual se abordan estrategias que permitirán mitigar estas debilidades, y mejorar a mediano plazo la prestación de este servicio contribuyendo en la mejora de la calidad de vida de los usuarios del sistema.
description: Public lighting systems have generated great interest for the community in general, since they bring with them a perspective of security and help to boost the economy, as it allows commerce to develop regardless of the time of day, it is for this reason that in accordance with the energy revolution that has been generated in the world, Colombia has established regulations aimed at guaranteeing an improvement in the provision of this public service, however it was evident that there are great weaknesses in the implementation of these lighting systems. public, including technical regulations such as the RETIE or the RETILAP, regulations on energy efficiency, as well as the public lighting tax, which seeks to ensure an increasingly efficient service, evidencing serious weaknesses in the implementation of modernization processes , for which strategies are addressed that will mitigate these weaknesses, and improve the provision of this service in the medium term, contributing to the improvement of the quality of life of the users of the system.