cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Achieving class-based QoS for transactional workloads
Creators: name: Schroeder, Bianca
name: Harchol-Balter, Mor
name: Iyengar, Arun
name: Nahum, Erich
Publisher: name: Carnegie Mellon University
Year: 1974
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Transaction processing systems lie at the core of modern e-commerce applications such as on-line retail stores, banks and airline reservation systems. The economic success of these applications depends on the ability to achieve high user satisfaction, since a single mouse-click is all that it takes a frustrated user to switch to a competitor. Given that system resources are limited and demands are varying, it is difficult to provide optimal performance to all users at all times. However, often transactions can be divided into different classes based on how important they are to the online retailer. For example, transactions initiated by a "big spending" client are more important than transactions from a client that only browses the site. A natural goal then is to ensure short delays for the class of important transactions, while for the less important transactions longer delays are acceptable.
Numerical experiments of adjusted BSSN systems for controlling constraint violations
Creators: name: Kiuchi, Kenta
name: Shinkai, Hisa-aki
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present our numerical comparisons between the BSSN formulation widely used in numerical relativity today and its adjusted versions using constraints. We performed three testbeds: gauge-wave, linear wave, and Gowdy-wave tests, proposed by the Mexico workshop on the formulation problem of the Einstein equations. We tried three kinds of adjustments, which were previously proposed from the analysis of the constraint propagation equations, and investigated how they improve the accuracy and stability of evolutions. We observed that the signature of the proposed Lagrange multipliers are always right and the adjustments improve the convergence and stability of the simulations. When the original BSSN system already shows satisfactory good evolutions (e.g., linear wave test), the adjusted versions also coincide with those evolutions; while in some cases (e.g., gauge-wave or Gowdy-wave tests) the simulations using the adjusted systems last 10 times as long as those using the original BSSN equations. Our demonstrations imply a potential to construct a robust evolution system against constraint violations even in highly dynamical situations.
description: to be published in PRD
UMat: Uncertainty-Aware Single Image High Resolution Material Capture
Creators: name: Rodriguez-Pardo, Carlos
name: Dominguez-Elvira, Henar
name: Pascual-Hernandez, David
name: Garces, Elena
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Graphics (cs.GR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.4.0; I.2.6; I.3.0
subject: 68T07 (Primary) 68T45, 68U10, 68U05 (Secondary)

description: We propose a learning-based method to recover normals, specularity, and roughness from a single diffuse image of a material, using microgeometry appearance as our primary cue. Previous methods that work on single images tend to produce over-smooth outputs with artifacts, operate at limited resolution, or train one model per class with little room for generalization. Previous methods that work on single images tend to produce over-smooth outputs with artifacts, operate at limited resolution, or train one model per class with little room for generalization. In contrast, in this work, we propose a novel capture approach that leverages a generative network with attention and a U-Net discriminator, which shows outstanding performance integrating global information at reduced computational complexity. We showcase the performance of our method with a real dataset of digitized textile materials and show that a commodity flatbed scanner can produce the type of diffuse illumination required as input to our method. Additionally, because the problem might be illposed -- more than a single diffuse image might be needed to disambiguate the specular reflection -- or because the training dataset is not representative enough of the real distribution, we propose a novel framework to quantify the model's confidence about its prediction at test time. Our method is the first one to deal with the problem of modeling uncertainty in material digitization, increasing the trustworthiness of the process and enabling more intelligent strategies for dataset creation, as we demonstrate with an active learning experiment.
description: CVPR 2023. Project website: https://carlosrodriguezpardo.es/projects/UMat/
Research assessment by percentile-based double rank analysis
Creators: name: Brito, Ricardo
name: Rodriguez-Navarro, Alonso
Publisher: name: arXiv
Year: 2017
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences
subject: 62P25, 91c99

description: In the double rank analysis of research publications, the local rank position of a country or institution publication is expressed as a function of the world rank position. Excluding some highly or lowly cited publications, the double rank plot fits well with a power law, which can be explained because citations for local and world publications follow lognormal distributions. We report here that the distribution of the number of country or institution publications in world percentiles is a double rank distribution that can be fitted to a power law. Only the data points in high percentiles deviate from it when the local and world $μ$ parameters of the lognormal distributions are very different. The likelihood of publishing very highly cited papers can be calculated from the power law that can be fitted either to the upper tail of the citation distribution or to the percentile-based double rank distribution. The great advantage of the latter method is that it has universal application, because it is based on all publications and not just on highly cited publications. Furthermore, this method extends the application of the well-established percentile approach to very low percentiles where breakthroughs are reported but paper counts cannot be performed.
description: A pdf file containing text, 9 figures and 4 tables. Accepted in Journal of Informetrics
Big Data Analytics: Accelerating Innovation and Value Creation
Creators: name: Persaud, Ajax
name: Schillo, Sandra
Publisher: name: My University
Year: 2017
Subjects: Big data analytics
Innovation
Adoption
Skills
Capabilities
Challenges

description: In this report, we synthesize the literature on five interrelated themes to determine the state of knowledge, and possible gaps, regarding the key factors that facilitate or inhibit an organization’s ability to harness the value of big data. The themes are (1) the prerequisites for successful deployment of big data analytics, (2) the mix of knowledge, skills and capabilities for careers in big data analytics, (3) the application of big data analytics for creativity, innovation, and value creation, (4) the challenges in harnessing value from big data initiatives, and (5) the role of government policies in advancing big data analytics in the economy.
Quantum Spread Complexity in Neutrino Oscillations
Creators: name: Dixit, Khushboo
name: Haque, S. Shajidul
name: Razzaque, Soebur
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum information theory has recently emerged as a flourishing area of research and quantum complexity, one of its powerful measures, is being applied for investigating complex systems in many areas of physics. Its application to practical physical situations, however, is still few and far between. Neutrino flavor oscillation is a widely studied physical phenomena with far reaching consequences in understanding the standard model of particle physics and to search for physics beyond it. Oscillation arises because of mixing between the flavor and mass eigenstates, and their evolution over time. It is an inherent quantum system for which flavor transitions are traditionally studied with probabilistic measures. We have applied quantum complexity formalism as an alternate measure to study neutrino oscillations. In particular, quantum spread complexity revealed additional information on the violation of charge-parity symmetry in the neutrino sector. Our results indicate that complexity favors the maximum violation of charge-parity, hinted recently by experimental data.
description: 29 pages, 9 figures, Accepted for publication in Eur. Phys. J. C
Regularity of high energy photon events from gamma ray bursts
Creators: name: Xu, Haowei
name: Ma, Bo-Qiang
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The effect of Quantum Gravity (QG) may bring a tiny light speed variation as $v(E)=c(1-E/E_{\rm LV})$, where $E$ is the photon energy and $E_{\rm LV}$ is a Lorentz violation scale. A remarkable regularity was suggested in previous studies to look for the light speed variation from high energy photon events of Gamma Ray Bursts (GRBs). We provide a general analysis on the data of 25 bright GRBs observed by the Fermi Gamma-ray Space Telescope (FGST). Such method allows a completed scan over all possibilities in a more clean and impartial way without any bias compared to previous intuitive analysis. The results show that with the increase in the intrinsic energies of photons, such regularity truly emerges and gradually becomes significant. For photons with intrinsic energies higher than 40~GeV, the regularity exists at a significance of 3-5~$σ$ with $E_{\rm LV}=3.6\times 10^{17}~\rm GeV$ determined by the GRB data.
description: 15 latex pages, 9 figures
Examining the Regulatory Gap on Indian Act Reserve Lands: A Comparative Case Study of Two Aboriginal Governance Regimes in Quebec
Creators: name: Pyke, Simon
Publisher: name: My University
Year: 2018

description: Governance of First Nations lands in Canada is a contentious and complicated subject, within which a phenomenon known as the regulatory gap on Indian Act reserve lands is frequently discussed. The generally accepted description of this regulatory gap is that while First Nations reserves fall under the jurisdiction of the federal government, provincial governments are largely responsible for land and environmental management; therefore, not only does the majority of legislation passed by the provinces not apply on reserve, but the federal equivalents of provincial land and environmental management regulations are extremely limited. This regulatory gap is frequently identified as a key contributing factor to major human and environmental health issues on reserve. However, a review of the literature on the regulatory gap reveals that examinations of the regulatory gap which go beyond jurisdictional explanations are lacking, as are provincially focused, comparative studies of the topic. This paper will seek to provide such an examination through a comparative case study of the two primary land and environmental regimes of the First Nations peoples of Quebec, one established in the Indian Act and the other operating outside of the Act through the James Bay and Northern Quebec Agreement. The similarities and the differences between these land regimes will be the empirical focus of this examination. Through this comparative analysis, the current, relatively narrow descriptions of the regulatory gap will be expanded through engagement with ongoing debates on the broader subject of aboriginal governance. This will provide greater context and nuance to the regulatory gap and to the varied and ongoing efforts to bridge the gap on Indian Act reserve lands in Quebec and across Canada.
"Esto siempre ha sido luchado". Pasados presentes y horizontes de futuro en los comités campesinos del bajo San Jorge (Colombia)
Creators: name: Ospina Florido, Byron Giovanny
Publisher: name: Universidad Externado de Colombia. Facultad de Ciencias Sociales y Humanas. Centro de Investigaciones Sobre Dinámica Social.
Year: 2023
Subjects: subject: Campesinos - Colombia
subject: Movimientos campesinos - Colombia
subject: Tenencia de la tierra - Colombia
subject: Campesinado
subject: Río San Jorge
subject: Lucha por la Tierra
subject: Pasado-presente

description: “Esto siempre ha sido luchado” es una expresión que constantemente se le oye decir a las campesinas y campesinos cuando recuerdan su devenir, en el marco de las luchas por la tierra en la región del San Jorge en el caribe colombiano. Desde hace 20 años, estas luchas se han dado desde los comités campesinos; experiencias organizativas de vieja data donde desembocan diferentes estratos de la temporalidad social de la región. Justamente, este capítulo examina las maneras cómo en el presente de los nuevos comités, confluyen los pasados organizativos campesinos surgidos durante el siglo XX en el departamento de Sucre y en gran parte del Caribe colombiano. Metodológicamente se abordan los estratos temporales que atraviesan la experiencia organizativa de tres comunidades ribereñas y sus comités, desde un estudio etnográfico y un encuadramiento histórico-antropológico que problematiza los modos en que las luchas del presente se alimentan y a la vez se distancian del pasado organizativo regional.
description: "This has always been fought for" is an expression that is constantly heard from peasants when they recall their evolution in the context of the struggles for land in the San Jorge region in the Colombian Caribbean. For the last 20 years, these struggles have been carried out through the peasant committees, long-standing organizational experiences where different strata of the social temporality of the region meet. Precisely, this chapter examines the ways in which in the present of the new committees, the peasant organizational pasts that emerged during the 20th century in the department of Sucre and in a large part of the Colombian Caribbean converge. Methodologically, the temporal layers that cross the organizational experience of three riverside communities and their committees are approached from an ethnographic study and a historical-anthropological framing that problematizes the ways in which present struggles feed and at the same time distance themselves from the regional organizational past.
A Woman’s Place is in the House (of Commons)
Creators: name: Hanbidge, Helen
Publisher: name: My University
Year: 2019

description: In 2015, Canadians elected the most gender-balanced House of Commons in national history, with just under 27% of the MPs elected in the 42nd Federal Election being women. In spite of this record number of woman parliamentarians, Canada has slipped in international rankings for gender parity in legislative bodies and remains below the United Nation’s target of 30% of legislatures being female. Given that women make up 51% of the Canadian population, and given that women win elections at similar rates to men, the question remains as to what is keeping Canadian women out of public office. By focusing on the nomination process as the chokepoint at which women’s political ambitions are most frequently stalled, this paper seeks to evaluate what is being done to help increase the number of women running for office, and the effectiveness of such initiatives at achieving this goal. Through a lens of the supply and demand sides of running for office, this paper uses existing academic literature and firsthand accounts of the experiences of women in politics to examine the benefits to having women in public office and the barriers women encounter in the political arena, to assess the current state of women in politics in Canada, and consider the initiatives currently at work in Canadian politics. This paper then explores responses to the author’s survey from women who ran in nominations in the 2015 federal election cycle exploring their backgrounds, experiences, and perspectives as women engaged in the political process. By considering these responses alongside the academic and popular theories of female engagement in politics, this paper identifies the most effect areas for initiatives to support women running for public office, potential disconnects between theory and the realities of the 2015 election, and recommends the use of external pressures to encourage political parties to take tangible action to support potential candidates at all stages of the electoral process.
Wave scattering event shapes at high energies
Creators: name: Gonzo, Riccardo
name: Ilderton, Anton
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the space and properties of global and local observables for radiation emitted in the scattering of a massive scalar field in gauge and gravitational plane-wave backgrounds, in both the quantum and classical theory. We first compute the radiated momentum and angular momentum flow, demonstrating that they are good local observables determined by the amplitude and phase of the waveform. We then focus on the corresponding global observables, which in the gravitational case requires dealing with the collinear divergence of the gravitational Compton cross-section. We show using the KLN theorem that we can obtain an infrared-finite cross-section only by summing over forward scattering diagrams; this suggests dressing the initial state in the direction collinear to the plane wave in order to be able to compute observables integrated over the celestial sphere. Finally, we explore the high-energy behaviour of our observables. We find that classical global observables generically exhibit a power-law mass divergence in electrodynamics and a logarithmic mass divergence in gravity, even when radiation reaction is included. We then show explicitly how this is consistently resolved in the full quantum theory.
description: 37 pages, 8 figures; v2: published in JHEP; v3: typos corrected, final version
Small codes
Creators: name: Balla, Igor
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: Information Theory (cs.IT)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: E.4
subject: 52C17 (Primary) 94B65, 05B40, 05D10 (Secondary)

description: Determining the maximum number of unit vectors in $\mathbb{R}^r$ with no pairwise inner product exceeding $α$ is a fundamental problem in geometry and coding theory. In 1955, Rankin resolved this problem for all $α\leq 0$ and in this paper, we show that the maximum is $(2+o(1))r$ for all $0 \leq α\ll r^{-2/3}$, answering a question of Bukh and Cox. Moreover, the exponent $-2/3$ is best possible. As a consequence, we conclude that when $j \ll r^{1/3}$, a $q$-ary code with block length $r$ and distance $(1-1/q)r - j$ has size at most $(2 + o(1))(q-1)r$, which is tight up to the multiplicative factor $2(1 - 1/q) + o(1)$ for any prime power $q$ and infinitely many $r$. When $q = 2$, this resolves a conjecture of Tietäväinen from 1980 in a strong form and the exponent $1/3$ is best possible. Finally, using a recently discovered connection to $q$-ary codes, we obtain analogous results for set-coloring Ramsey numbers.
description: 7 pages; bounds for all q are obtained, presentation is improved
El derecho de defensa en el proceso ejecutivo : una aproximación desde la regulación contenida en el artículo 430 del Código General del Proceso
Creators: name: Ramírez Cortés, José Arnulfo
Publisher: name: Universidad Externado de Colombia
Year: 2022
Subjects: subject: Jurisprudencia - Colombia
subject: Derecho de defensa
subject: Obligaciones - Derecho
subject: Derecho de defensa
subject: Proceso ejecutivo
subject: Título ejecutivo
subject: Requisitos formales del título ejecutivo

description: El derecho de defensa en el proceso ejecutivo constituye uno de los pilares fundamentales para el ejercicio del derecho de contradicción del ejecutado, puesto que permite a quien acude a la escena procesal en dicha calidad, controvertir no solo el título que sirve de fundamento a la ejecución, sino la pretensión ejecutiva propiamente dicha. Sin embargo, tal designio en la práctica se ve en alguna medida silenciado por los problemas interpretativos que trae consigo el artículo 430 del C.G.P.; particularmente, el relacionado con la expresión “requisitos formales del título ejecutivo”, pues la vaguedad e indeterminación del concepto ha llevado a diversas y variadas interpretaciones jurídicas, sin un punto de conformidad, por lo etérea que resulta la discusión, dado que para lo que un juez constituye un requisito de forma, para otro necesariamente, no; con la consideración especial de que dichos defectos formales tienen un término de preclusividad para su alegación, lo que finalmente, repercute en el derecho de defensa del ejecutado, quien a la postre se ve inmerso en una clara disyuntiva, puesto que debe optar por alegar su ausencia en el título, formulando el respectivo recurso de reposición contra el mandamiento ejecutivo o la correspondiente excepción de mérito.
description: The right to a defense in the execution procedures constitute one of the fundamental pillars to exercise the defendant’s right to contest, as it allows whoever comes to the procedural scene in such capacity to dispute, not only the title that serves as a base for the execution, but the execution claim itself. However, such plan, in practice, is silenced by the interpretative issues article 430 of the General Procedural Code brings along, specially the one related to the expression “formal requirements of the execution title”, for its vagueness and indeterminacy has resulted in several diverse juridical interpretations without a common point, due to the ethereal nature of the discussion, for one judge might see it as a requirement of form, but another one might not. There is a special consideration that those formal effects have a expiration term for their allegation, which ultimately affects the defendant’s right to a defense, who ultimately finds themselves in a clear dilemma, for they must choose to plead their absence in the title, formulating the respective reversal appeal against the executive order or the corresponding exception of merit.
Diffusive and Ballistic Transport in Ultra-thin InSb Nanowire Devices Using a Few-layer-Graphene-AlOx Gate
Creators: name: Shani, Lior
name: Lueb, Pim
name: Menning, Gavin
name: Gupta, Mohit
name: Riggert, Colin
name: Littman, Tyler
name: Hackbarth, Frey
name: Rossi, Marco
name: Jung, Jason
name: Badawy, Ghada
name: Verheijen, Marcel A.
name: Crowell, Paul
name: Bakkers, Erik P. A. M.
name: Pribiag, Vlad S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quantum devices based on InSb nanowires (NWs) are a prime candidate system for realizing and exploring topologically-protected quantum states and for electrically-controlled spin-based qubits. The influence of disorder on achieving reliable topological regimes has been studied theoretically, highlighting the importance of optimizing both growth and nanofabrication. In this work we investigate both aspects. We developed InSb nanowires with ultra-thin diameters, as well as a new gating approach, involving few-layer graphene (FLG) and Atomic Layer Deposition (ALD)-grown AlOx. Low-temperature electronic transport measurements of these devices reveal conductance plateaus and Fabry-Pérot interference, evidencing phase-coherent transport in the regime of few quantum modes. The approaches developed in this work could help mitigate the role of material and fabrication-induced disorder in semiconductor-based quantum devices.
description: 14 pages, 5 figures
Qamani’tuac
Creators: name: Auclair, Raymond
Publisher: name: My University
Year: 2018
Subjects: Inuit history
Baker Lake

description: The author is retired. In the 1970s, he was a navigating officer on Canadian Coast Guard ships. He revisited student life for his own interests and has seven postsecondary diplomas. He is presently registered in the Masters of World Literatures and Cultures. This article is adapted from a paper submitted for LCM5302 Travel and [literary] Theory, in October 2017. In Inuit culture and history, the town of Baker Lake should not exist. It was a seasonal camp where Inuit from different groups would gather, in summer, for hunting and fishing, with the goal of replenishing the supplies of their individual communities. The interference from European colonizers and the Canadian government has contributed to the artificial creation of Baker Lake. Was it an attempt to build Utopia? The author mixes his own travel memories (1973) with his literature research, in order to describe this mystery.
Accessing the Densho and HistoryMakers Oral History Collections via Informedia Technologies
Creators: name: Christel, Michael G
name: Baron, Robert V.
name: Froh, Geoff
name: Benson, Dan
name: Julieanna  Richardson
Publisher: name: Carnegie Mellon University
Year: 1968
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Densho is a nonprofit organization started in 1996 with the goal of documenting oral histories from Japanese Americans who were incarcerated during World War II. The HistoryMakers is a nonprofit established in 1999 with the goal of documenting video life oral history interviews highlighting the accomplishments of individual African Americans and African-American-led groups and movements. Both collections share the goal of broader, deeper use of the oral history content through digitization and automated processing where appropriate. This demonstration showcases the application of Carnegie Mellon Informedia digital video library processing and interfaces to enhance access into the interview segments.
Detection of Low Tension Cosmic Superstrings
Creators: name: Chernoff, David F.
name: Tye, S. -H. Henry
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Cosmic superstrings of string theory differ from conventional cosmic strings of field theory. We review how the physical and cosmological properties of the macroscopic string loops influence experimental searches for these relics from the epoch of inflation. The universe's average density of cosmic superstrings can easily exceed that of conventional cosmic strings having the same tension by two or more orders of magnitude. The cosmological behavior of the remnant superstring loops is qualitatively distinct because the string tension is exponentially smaller than the string scale in flux compactifications in string theory. Low tension superstring loops live longer, experience less recoil (rocket effect from the emission of gravitational radiation) and tend to cluster like dark matter in galaxies. Clustering enhances the string loop density with respect to the cosmological average in collapsed structures in the universe. The enhancement at the Sun's position is $\sim 10^5$. We develop a model encapsulating the leading order string theory effects, the current understanding of the string network loop production and the influence of cosmological structure formation suitable for forecasting the detection of superstring loops via optical microlensing, gravitational wave bursts and fast radio bursts. We evaluate the detection rate of bursts from cusps and kinks by LIGO- and LISA-like experiments. Clustering dominates rates for $G μ< 10^{-11.9}$ (LIGO cusp), $G μ<10^{-11.2}$ (LISA cusp), $G μ< 10^{-10.6}$ (LISA kink); we forecast experimentally accessible gravitational wave bursts for $G μ>10^{-14.2}$ (LIGO cusp), $G μ>10^{-15}$ (LISA cusp) and $G μ>10^{- 14.1}$ (LISA kink).
description: 81 pages, 15 figures; refs. added
Efectos del turismo rural comunitario en Ciudad Bolívar
Creators: name: Moreno Barón, Daniela Alejandra
Publisher: name: Universidad Externado de Colombia
Year: 2021
Subjects: subject: Actividades culturales
subject: Turismo
subject: Desarrollo sostenible
subject: Comunidad
subject: Turismo
subject: Rural
subject: Sostenibilidad

description: El turismo rural comunitario nace como una iniciativa para llevar a cabo la actividad turística de manera sostenible favoreciendo a la comunidad en los ámbitos sociocultural, económico y natural especialmente en zonas vulnerables como es el caso de Ciudad Bolívar en Bogotá. El área rural de esta localidad se ha visto estigmatizada por la violencia y la falta de recursos y oportunidades, es por esto que la comunidad vio en el turismo una oportunidad para mostrar todas las cualidades del destino entre las cuales se encuentran festividades, practicas campesinas tradicionales y plantas endémicas, sin olvidar la importancia que tiene como corredor natural ya que protege el páramo de Sumapaz, así mismo, mejorar su calidad de vida, valorar su prácticas y sabes y concientizar al visitante.
description: Rural community tourism was born as an initiative to carry out tourism activities in a sustainable manner, favoring the community in the sociocultural, economic and natural aspects, especially in vulnerable areas such as Ciudad Bolivar in Bogota. The rural zone of this locality has been stigmatized by violence, lack of resources and opportunities, which is why the community saw in tourism an opportunity to show all the qualities of the destination among which are festivities, traditional peasant practices and endemic plants, without forgetting the importance it has as a natural corridor as it protects the Sumapaz moor, as well as improve their quality of life, value their practices and know and raise awareness among visitors.
Long-rising Type II Supernovae in the Zwicky Transient Facility Census of the Local Universe
Creators: name: Sit, Tawny
name: Kasliwal, Mansi M.
name: Tzanidakis, Anastasios
name: De, Kishalay
name: Fremling, Christoffer
name: Sollerman, Jesper
name: Gal-Yam, Avishay
name: Miller, Adam A.
name: Adams, Scott
name: Aloisi, Robert
name: Andreoni, Igor
name: Chu, Matthew
name: Cook, David
name: Das, Kaustav Kashyap
name: Dugas, Alison
name: Groom, Steven L.
name: Ho, Anna Y. Q.
name: Karambelkar, Viraj
name: Neill, James D.
name: Masci, Frank J.
name: Medford, Michael S.
name: Purdum, Josiah
name: Sharma, Yashvi
name: Smith, Roger
name: Stein, Robert
name: Yan, Lin
name: Yao, Yuhan
name: Zhang, Chaoran
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: SN 1987A was an unusual hydrogen-rich core-collapse supernova originating from a blue supergiant star. Similar blue supergiant explosions remain a small family of events, and are broadly characterized by their long rises to peak. The Zwicky Transient Facility (ZTF) Census of the Local Universe (CLU) experiment aims to construct a spectroscopically complete sample of transients occurring in galaxies from the CLU galaxy catalog. We identify 13 long-rising (>40 days) Type II supernovae from the volume-limited CLU experiment during a 3.5 year period from June 2018 to December 2021, approximately doubling the previously known number of these events. We present photometric and spectroscopic data of these 13 events, finding peak r-band absolute magnitudes ranging from -15.6 to -17.5 mag and the tentative detection of Ba II lines in 9 events. Using our CLU sample of events, we derive a long-rising Type II supernova rate of $1.37^{+0.26}_{-0.30}\times10^{-6}$ Mpc$^{-3}$ yr$^{-1}$, $\approx$1.4% of the total core-collapse supernova rate. This is the first volumetric rate of these events estimated from a large, systematic, volume-limited experiment.
description: 33 pages, 18 figures, 5 tables. Updated to ApJ accepted version
Kinematics of the SN Refsdal host revealed by MUSE: a regularly rotating spiral galaxy at z~1.5
Creators: name: Di Teodoro, E. M.
name: Grillo, C.
name: Fraternali, F.
name: Gobat, R.
name: Karman, W.
name: Mercurio, A.
name: Rosati, P.
name: Balestra, I.
name: Caminha, G. B.
name: Caputi, K. I.
name: Lombardi, M.
name: Suyu, S. H.
name: Treu, T.
name: Vanzella, E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use Multi Unit Spectroscopic Explorer (MUSE) observations of the galaxy cluster MACS J1149.5+2223 to explore the kinematics of the grand-design spiral galaxy Sp1149 hosting the SN Refsdal. Sp1149 lies at $z\simeq1.49$, has a stellar mass $M_*\simeq5\times10^9 \, \mathrm{M_\odot}$, a star-formation rate $\mathrm{SFR} \simeq1-6 \, \mathrm{M_\odot/yr}$ and represents a likely progenitor of a Milky-Way-like galaxy. All the four multiple images of Sp1149 in our data show strong OII-line emissions pointing to a clear rotation pattern. We take advantage of the gravitational lensing magnification effect ($\simeq 4 \times$) on the OII emission of the least distorted image to fit 3D kinematic models to the MUSE data-cube and derive the rotation curve and the velocity dispersion profile of Sp1149. We find that the rotation curve steeply rises, peaks at $R\simeq1$ kpc and then (initially) declines and flattens to an average $V_\mathrm{flat} = 128^{+29}_{-19}$ km/s. The shape of the rotation curve is well determined but the actual value of $V_\mathrm{flat}$ is quite uncertain because of the nearly face-on configuration of the galaxy. The intrinsic velocity dispersion due to gas turbulence is almost constant across the entire disc with an average of $27\pm5$ km/s. This value is consistent with $z=0$ measurements in the ionized gas component and a factor 2-4 lower than other estimates in different galaxies at similar redshifts. The average stellar-to-total mass fraction is of the order of one fifth. Our kinematic analysis returns the picture of a regular star-forming, mildly turbulent, rotation-dominated ($V / σ\simeq5$) spiral galaxy in a 4 Gyr old Universe.
description: 10 pages, 5 figures. Accepted for publication in MNRAS
Armonización del deber de disponibilidad laboral y el derecho a la desconexión laboral
Creators: name: Cristancho Ceballos, Adriana
Publisher: name: Universidad Externado de Colombia
Year: 2022
Subjects: subject: Derecho laboral
subject: Trabajo
subject: Colombia - Corte suprema de justicia
subject: Deber de disponibilidad
subject: Derecho a la desconexión laboral
subject: Ordenación del tiempo de trabajo
subject: Jornada laboral
subject: Seguridad y salud en el trabajo

description: Uno de los elementos identificadores de todo contrato laboral es la disponibilidad que debe atender el trabajador a favor de su empleador. Este deber no traía mayores dificultades en décadas pasadas, pues la división del tiempo de trabajo con respecto al tiempo de descanso o personal del trabajador era transparente y fácilmente diferenciable. Sin embargo, cada vez dicha separación resulta más compleja gracias a las nuevas tecnologías que le permiten al trabajador, estando fuera de su lugar de trabajo y estando fuera de su horario laboral, no solo estar a disposición de su empleador, sino incluso, prestar sus servicios, a costa de un efectivo descanso y desconexión para realizar otra clase de actividades que le permiten su desarrollo integral como ser humano. Como consecuencia de lo anterior, en el presente escrito se analiza si la aparente pugna entre el deber de disponibilidad y el derecho a la desconexión laboral pueden armonizar y de ser así, cómo ello podría llevarse a cabo, recorriendo para el efecto, un camino que aborda el desarrollo de cada uno desde lo jurisprudencial hasta plantear una posible solución adaptable a los distintos cambios de las relaciones de trabajo.
description: One of the identifying elements of any employment contract is the availability that the worker must meet in favor of his employer. This duty did not cause major difficulties in past decades since worker´s division between work and rest or personal time was transparent and easily distinguishable. However, this separation is becoming increasingly complex thanks to the new technologies that allow workers not only to be available to their employers buy to provide their services while away from their workplace and/or outside working hours, at the cost of effective rest and disconnection to carry out other activities that allow their integral development as human beings. As a consequence, this paper analyzes whether the apparent struggle between the duty to be available and the right to disconnect from work can be harmonized and, if so, how it could be carried out, following for this purpose a path that addresses the judicial development of those interests to propose a possible solution, adaptable to different changes in labor relations.
Accelerated iterative methods for the solution of tridiagonal systems on parallel computers
Creators: name: D. E. Heller
name: D. K. Stevenson
name: J. F.(Joseph Frederick) Traub
Publisher: name: Carnegie Mellon University
Year: 1989
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Computer Science Department
Dielectric Evidence for Possible Type-II Multiferroicity in alpha-RuCl3
Creators: name: Zheng, Jia-Cheng
name: Cui, Yi
name: Li, Tian-Run
name: Ran, Ke-Jing
name: Wen, Jinsheng
name: Yu, Weiqiang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: $α$-RuCl$_3$ is a Mott insulator with a honeycomb lattice with strong spin-orbit coupling. We report dielectric measurements on $α$-RuCl$_3$ single crystals under field. At zero field, the dielectric constant, $ε$, drops rapidly when cooled through the magnetic transition temperature T$_N$. With increasing field, the onset of the drop in $ε$ tracks the T$_N$. Such behavior is absent with field above a critical value H$_c$ ~ 7.5 T, indicating the onset of a quantum phase transition. Our data suggest that the dielectric constant can be used as a probe of magnetic ordering in $α$-RuCl$_3$, and $α$-RuCl$_3$ is a possible type-II multiferroics.
Testing the RRPP vertex of effective Regge action
Creators: name: Kuraev, E. A.
name: Bytev, V. V.
name: Bakmaev, S.
name: Antonov, E. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In frames of effective Regge action the vertices describing conversion of two reggeized gluons to one two and three ordinary gluons was constructed. The self-consistency: Bose symmetry and gauge invariance properties checks was shown to be fulfilled. The simplest one with creation of a single gluon was intensively verified in programs of experimental and theoretical treatment since it determine the kernel of of the known BFKL equation. Here we discuss the possibility to check the vertex with creation of two real gluons, which can reveal itself in process of scalar mesons production in high energy peripheral nucleons collisions. We show that the mechanisms which include emission of two gluons in the same effective vertex contribution dominate compared with one with the creation of two separate gluons. Numerical estimations of cross section of pair of charged pions production for LHC facility give the value or order $10 mb$. As well we estimate the excess of production of positively charged muons (as a decay of pions) created by cosmic ray proton collisions with the atmosphere gas nuclei to be in a reasonable agreement with modern data.
description: 9 pages
Momentum Shell in Quarkyonic Matter from Explicit Duality: A Dual Model for Cold, Dense QCD
Creators: name: Fujimoto, Yuki
name: Kojo, Toru
name: McLerran, Larry D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a model of cold QCD matter that bridges nuclear and quark matter through the duality relation between quarks and baryons. The baryon number and energy densities are expressed as functionals of either the baryon momentum distribution, $f_{\rm B}$, or the quark distribution, $f_{\rm Q}$, which are subject to the constraints on fermions, $0 \le f_{\rm B,Q} \le 1$. The theory is ideal in the sense that the confinement of quarks into baryons is reflected in the duality relation between $f_{\rm Q}$ and $f_{\rm B}$, while other possible interactions among quarks and baryons are all neglected. The variational problem with the duality constraints is formulated and we explicitly construct analytic solutions, finding two distinct regimes: A nuclear matter regime at low density and a Quarkyonic regime at high density. In the Quarkyonic regime, baryons underoccupy states at low momenta but form a momentum shell with $f_{\rm B}=1$ on top of a quark Fermi sea. Such a theory describes a rapid transition from a soft nuclear equation of state to a stiff Quarkyonic equation of state. At this transition, there is a rapid increase in the pressure.
description: 6 pages, 3 figures; v2: published version
Additional file 1 of miR-363 suppresses the proliferation, migration and invasion of clear cell renal cell carcinoma by downregulating S1PR1
Creators: name: Xie, Yongpeng
name: Chen, Luyao
name: Gao, Yu
name: Ma, Xin
name: He, Weiyang
name: Zhang, Yu
name: Zhang, Fan
name: Fan, Yang
name: Gu, Liangyou
name: Li, Pin
name: Zhang, Xu
name: Gou, Xin
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Cancer

description: Additional file 1: Table S1. Primer sequences for qRT-PCR.
Multi-Firm Mergers with Leaders and Followers
Creators: name: Atallah, Gamal
Publisher: name: My University
Year: 2015
Subjects: Mergers
Merger profitability
Merger paradox
Stackelberg
Leaders
Followers
Fusions
Profitabilité des fusions
Paradoxe des fusions
Meneurs
Suiveurs

description: This paper analyzes mergers involving several leaders and followers in Stackelberg models, with the merged entity acting as a leader. Adding a follower to a merger increases its profitability or reduces its losses. A merger between one leader and any number of followers is always profitable. When a merger involves two leaders, it requires a sufficiently large proportion of followers to participate in it to be profitable. A merger is less likely to be profitable when the number of participating leaders is intermediate and the number of participating followers is small. All mergers involving leaders and followers are welfare reducing. Overall, Stackelberg leadership partially alleviates the merger paradox. / Ce papier analyse les fusions impliquant plusieurs meneurs et suiveurs dans les modèles de Stackelberg, où la firme fusionnée agit comme un meneur. Ajouter un suiveur à une fusion augmente sa profitabilité ou réduit ses pertes. Toute fusion entre un meneur et n’importe quel nombre de suiveurs est profitable. Lorsque deux meneurs participent à une fusion, il faut qu’un nombre suffisant de suiveurs s’y joignent pour qu’elle soit profitable. Une fusion a moins de chances d’être profitable lorsque le nombre de meneurs qui y participent est intermédiaire et le nombre de suiveurs est petit. Toutes les fusions impliquant des meneurs et des suiveurs réduisent le bien-être. En général, le leadership de Stackelberg allège en partie le paradoxe des fusions.
Plan de marketing internacional Ciencuadras
Creators: name: Garcia Agudelo, Mariana
name: Ibarra Rivera, Maria Alejandra
Publisher: name: Universidad Externado de Colombia
Year: 2023
Subjects: subject: Mercadeo
subject: Bienes raices
subject: Economía
subject: Marketing Internacional
subject: Internacionalización
subject: Plan de mercadeo
subject: Plan estratégico

description: Este trabajo se desarrollo con la empresa Ciencuadras, para revisar si es viable o no la internacionalización de la marca hacia México, argumentando el por qué se debe o no expandir hacia otros países. Ciencuadras es una plataforma digital inmobiliaria que lleva más de 5 años en el mercado, donde su propuesta de valor está enfocada en prestar soluciones para el ecosistema inmobiliario. El portafolio de productos que tiene Ciencuadras es bastante extenso, dado que en la plataforma se pueden realizar procesos como búsqueda de inmuebles para arriendo, compra usado y compra nueva, publicar el inmueble para venta o arriendo, también compra inmuebles, en cuanto a trámites realizamos levantamiento de hipotecas, avalúos en línea, generación de certificados de tradición y libertad, entre otros. Con este contexto la idea es expandir la marca hacia el mercado mexicano dado que este es atractivo para el sector inmobiliario y de la construcción, donde brindaremos una solución integral para la venta o compra de un inmueble, teniendo como objetivo estar posicionados para los próximos 3 años como la plataforma que cuadra todo, acompañando y asesorando a los mexicanos interesados en comprar o vender un inmueble.
description: This investigation is about Ciencuadras, to review whether or not the internationalization of the brand to Mexico is viable, and why the territory should or should not be expanded to other countries. For the development of this brand expansion proposal, the company Ciencuadras will be chosen, this is a real estate digital platform that has been in the market for more than 5 years, where its value proposition is focused on providing solutions for the real estate ecosystem. The portfolio of products that Ciencuadras has is quite extensive, since on the platform people can carry out processes such as search properties for rent, buy used and buy new, publish the property for sale or lease, also buy real estate, in terms of procedures the company carry out mortgage survey, online appraisals, generation of certificates of tradition and freedom, among others. With this context, the idea is to expand the brand to the mexican market since it is attractive for the real estate and construction sector, where we will provide a comprehensive solution for the sale or purchase of a property, with the objective of being positioned for the next 3 years as the platform that balances everything, accompanying and advising mexicans who are interested in buying or selling a property.