cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Patrimonio de menores de edad y sus protección por parte del estado
Creators: name: Miranda Lomnboglia, Ricardo
name: Carrillo Choles, Monica
Publisher: name: Universidad de Cartagena
Year: 1995
Subjects: Niños - Derechos

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho,1995
description: Derechos de los menores según la constitución nacional y el código del menor, clasificándolos en patrimoniales y no patrimoniales, resaltando el aspecto administrativo que de ellos hagan las personas que legalmente están autorizados para esta labor, como lo son los padres que son los que ejercen la llamada patria potestad y los guardadores, es decir tutores y curadores.
Surface light modulation by sea ice and phytoplankton survival in a convective flow model
Creators: name: Tergolina, Vinicius Beltram
name: Calzavarini, Enrico
name: Mompean, Gilmar
name: Berti, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Plankton dynamics depend in a complex manner on a variety of physical phenomena, according to both experimental and numerical data. In particular, experimental field studies have highlighted the relation between phytoplankton survival and turbulent upwelling and downwelling from thermal convection. Recent numerical works have also shown the importance of accounting for advective transport by persistent structures in simulation models. In nutrient-rich polar marine environments phytoplankton blooms are critically limited by light availability under ice-covered waters. Such heterogeneity of the light intensity distribution, in association with a large-scale coherent fluid flow, can give rise to nontrivial growth dynamics. In this work we extend a previous advection-reaction-diffusion model of phytoplankton light-limited vertical dynamics in the presence of convective transport. Specifically, we consider horizontally heterogeneous light conditions through the use of two regions with different production regimes, modelling the absence (presence) of light under (in between) obstacles. Such a model is intended as an idealized representation of nonuniformly ice-covered polar waters. By means of numerical simulations, we find that the main role of advective transport is to hinder phytoplankton growth, but also that such effect depends on the positions of the obstacles with respect to the upwelling and downwelling flow regions. Furthermore, we show that the sinking speed due to the density difference between phytoplankton organisms and water, while small, plays an important role, which depends on how it adds to the flow. These results indicate that advective transport can have a crucial impact on the survival conditions of sinking phytoplankton species in polar environments.
description: 10 pages, 5 figures
Hitting statistics from quantum jumps
Creators: name: Chia, A.
name: Paterek, T.
name: Kwek, L. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We define the hitting time for a model of continuous-time open quantum walks in terms of quantum jumps. Our starting point is a master equation in Lindblad form, which can be taken as the quantum analogue of the rate equation for a classical continuous-time Markov chain. The quantum jump method is well known in the quantum optics community and has also been applied to simulate open quantum walks in discrete time. This method however, is well-suited to continuous-time problems. It is shown here that a continuous-time hitting problem is amenable to analysis via quantum jumps: The hitting time can be defined as the time of the first jump. Using this fact, we derive the distribution of hitting times and explicit exressions for its statistical moments. Simple examples are considered to illustrate the final results. We then show that the hitting statistics obtained via quantum jumps is consistent with a previous definition for a measured walk in discrete time [Phys.~Rev.~A~{\bf 73}, 032341 (2006)] (when generalised to allow for non-unitary evolution and in the limit of small time steps). A caveat of the quantum-jump approach is that it relies on the final state (the state which we want to hit) to share only incoherent edges with other vertices in the graph. We propose a simple remedy to restore the applicability of quantum jumps when this is not the case and show that the hitting-time statistics will again converge to that obtained from the measured discrete walk in appropriate limits.
description: Version to be published
The GENEA Challenge 2022: A large evaluation of data-driven co-speech gesture generation
Creators: name: Yoon, Youngwoo
name: Wolfert, Pieter
name: Kucherenko, Taras
name: Viegas, Carla
name: Nikolov, Teodor
name: Tsakov, Mihail
name: Henter, Gustav Eje
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Graphics (cs.GR)
subject: Machine Learning (cs.LG)
subject: Multimedia (cs.MM)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: I.3; I.2

description: This paper reports on the second GENEA Challenge to benchmark data-driven automatic co-speech gesture generation. Participating teams used the same speech and motion dataset to build gesture-generation systems. Motion generated by all these systems was rendered to video using a standardised visualisation pipeline and evaluated in several large, crowdsourced user studies. Unlike when comparing different research papers, differences in results are here only due to differences between methods, enabling direct comparison between systems. This year's dataset was based on 18 hours of full-body motion capture, including fingers, of different persons engaging in dyadic conversation. Ten teams participated in the challenge across two tiers: full-body and upper-body gesticulation. For each tier we evaluated both the human-likeness of the gesture motion and its appropriateness for the specific speech signal. Our evaluations decouple human-likeness from gesture appropriateness, which previously was a major challenge in the field. The evaluation results are a revolution, and a revelation. Some synthetic conditions are rated as significantly more human-like than human motion capture. To the best of our knowledge, this has never been shown before on a high-fidelity avatar. On the other hand, all synthetic motion is found to be vastly less appropriate for the speech than the original motion-capture recordings. Additional material is available via the project website at https://youngwoo-yoon.github.io/GENEAchallenge2022/
description: 12 pages, 5 figures; final version for ACM ICMI 2022
Analysis of the $Y(4220)$ and $Y(4390)$ as molecular states with QCD sum rules
Creators: name: Wang, Zhi-Gang
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this article, we assign the $Y(4390)$ and $Y(4220)$ to be the vector molecular states $D\bar{D}_1(2420)$ and $D^*\bar{D}_0^*(2400)$, respectively, and study their masses and pole residues with the QCD sum rules in details. The present calculations only favor assigning the $Y(4390)$ to be the $D\bar{D}_1(1^{--})$ molecular state.
description: 12 pages, 8 figures
Stellar signal components seen in HARPS and HARPS-N solar radial velocities
Creators: name: Moulla, K. Al
name: Dumusque, X.
name: Figueira, P.
name: Curto, G. Lo
name: Santos, N. C.
name: Wildi, F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Context. Radial velocity (RV) measurements induced by the presence of planets around late-type stars are contaminated by stellar signals that are of the order of a few meters per second in amplitude, even for the quietest stars. Those signals are induced by acoustic oscillations, convective granulation patterns, active regions co-rotating with the stellar surface, and magnetic activity cycles. Aims. This study investigates the properties of all coherent stellar signals seen on the Sun on timescales up to its sidereal rotational period. By combining HARPS and HARPS-N solar data spanning several years, we are able to clearly resolve signals on timescales from minutes to several months. Methods. We use a Markov Chain Monte Carlo (MCMC) mixture model to determine the quality of the solar data based on the expected airmass-magnitude extinction law. We then fit the velocity power spectrum of the cleaned and heliocentric RVs with all known variability sources, to recreate the RV contribution of each component. Results. After rejecting variations caused by poor weather conditions, we are able to improve the average intra-day root mean square (RMS) value by a factor of ~1.8. On sub-rotational timescales, we are able to fully recreate the observed RMS of the RV variations. In order to also include rotational components and their strong alias peaks introduced by nightly sampling gaps, the alias powers are accounted for by being redistributed to the central frequencies of the rotational harmonics. Conclusions. In order to enable a better understanding and mitigation of stellar activity sources, their respective impact on the total RV must be well-measured and characterized. We are able to recreate RV components up to rotational timescales, which can be further used to analyse the impact of each individual source of stellar signals on the detectability of exoplanets.
description: Accepted for publication in A&A
Effects of second responder programs on repeat incidents of family abuse
Creators: name: David, Robert C.
name: Weisburd, David
name: Taylor, Bruce
Publisher: name: Universität Tübingen
Year: 2008
Subjects: subject: Häusliche Gewalt , Prävention
subject: 360
subject: family abuse
subject: second responder programs
subject: effects
subject: review

description: Background: Second responder programs are based on the premises that family violence often recurs and that victims are likely to be especially receptive to crime prevention opportunities immediately following victimization. A team usually consisting of a police officer and a victim advocate follow-up on the initial police response to a family violence complaint, provides the victim with information on services and legal options and may warn those perpetrators present at the follow-up of the legal consequences of continued abuse. The purpose of the intervention is to reduce the likelihood of a new offense by helping victims to understand the cyclical nature of family violence, develop a safety plan, obtain a restraining order, increase their knowledge about legal rights and options, and provide shelter placement or other relocation assistance. A secondary aim of the intervention with victims may be to establish greater independence for victims through counseling, job training, public assistance, or other social service referrals. The intervention has spread widely, with support from the U.S. Department of Justice. Objectives: To assess the effect of second responder programs on repeat incidents of family violence. Main results: The second response intervention increased slightly the odds that a household would report another family violence incident to the police. No effect of the intervention was found on reports of new abuse based on victim surveys. Conclusions: The results suggest that the second response intervention does not affect the likelihood of new incidents of family violence. However, the intervention slightly increases victims’ willingness to report incidents to the police, possibly as a result of greater confidence in the police.
Investigating the expression, function and regulation of MYB5/TTG1 dependent genes and their roles in Arabidopsis thaliana seed coat development
Creators: name: Allen, Patrick James
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the Department of Animal, Plant and Soil Sciences, AgriBio, the Centre for Agribiosciences, College of Science, Health and Engineering, La Trobe University, Bundoora.
Implementing the Introduction, Methods, Results and Discussion Article Structure in Engineering Education based on Problem-based Learning
Creators: name: Liso, Vincenzo
Publisher: name: Journal of Problem Based Learning in Higher Education
Year: 2020

description: The organization of knowledge influences how effectively students learn, so that if the information are well structured and the knowledge acquisition process is carried out in a systemic way, one can more effectively retrieve pieces of knowledge. To tackle this problem a common document format used in academia, IMRaD (Introduction, Method, Results and Discussion), can help students in natural science and engineering education to approach the problem of knowledge organization in a systemic way from the beginning of the learning process. In this study, we explore the use of the IMRaD format for students pursuing undergraduate and master's degrees as a tool for learning whilst making the project report more comprehensible for readers. The predefined document structure cannot be considered the solution to all learning issues and it should not limit the unpredictability, which is necessary during the creative thinking typical of the research environment.
description: Journal of Problem Based Learning in Higher Education, Early view
A Multi-Wavelength View on the Rapidly-Evolving Supernova 2018ivc: An Analog of SN IIb 1993J but Powered Primarily by Circumstellar Interaction
Creators: name: Maeda, Keiichi
name: Chandra, Poonam
name: Moriya, Takashi J.
name: Reguitti, Andrea
name: Ryder, Stuart
name: Matsuoka, Tomoki
name: Michiyama, Tomonari
name: Pignata, Giuliano
name: Hiramatsu, Daichi
name: Bostroem, K. Azalee
name: Kundu, Esha
name: Kuncarayakti, Hanindyo
name: Bersten, Melina C.
name: Pooley, David
name: Lee, Shiu-Hang
name: Patnaude, Daniel
name: Rodriguez, Osmar
name: Folatelli, Gaston
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: SN 2018ivc is an unusual type II supernova (SN II). It is a variant of SNe IIL, which might represent a transitional case between SNe IIP with a massive H-rich envelope, and IIb with only a small amount of the H-rich envelope. However, SN 2018ivc shows an optical light curve evolution more complicated than canonical SNe IIL. In this paper, we present the results of prompt follow-up observations of SN 2018ivc with the Atacama Large Millimeter/submillimeter Array (ALMA). Its synchrotron emission is similar to that of SN IIb 1993J, suggesting that it is intrinsically an SN IIb-like explosion of a He star with a modest (~0.5 - 1 Msun) extended H-rich envelope. Its radio, optical, and X-ray light curves are explained primarily by the interaction between the SN ejecta and the circumstellar material (CSM); we thus suggest that it is a rare example (and the first involving the `canonical' SN IIb ejecta) for which the multi-wavelength emission is powered mainly by the SN-CSM interaction. The inner CSM density, reflecting the progenitor activity in the final decade, is comparable to that of SN IIb 2013cu that showed a flash spectral feature. The outer CSM density, and therefore the mass-loss rate in the final ~200 years, is larger than that of SN 1993J by a factor of ~5. We suggest that SN 2018ivc represents a missing link between SNe IIP and IIb/Ib/Ic in the binary evolution scenario.
description: 31 pages, 14 figures, 3 tables. Accepted for publication in ApJ
Stringent Pulsar Timing Bounds on Light Scalar Couplings to Matter
Creators: name: Benisty, David
name: Brax, Philippe
name: Davis, Anne-Christine
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Pulsar Timing constraints on scalar-tensor theories with conformal and disformal couplings to matter are discussed. Reducing the dynamics to the motion in the centre of mass frame and using the mean anomaly parametrisation, we find the first post-Newtonian corrections induced by the conformal and disformal interactions in the form of a generalized quasi-Keplerian solution. We also derive the radiation reaction force due to scalar radiation and the corresponding Post-Keplerian Parameters (PKP). We use different pulsar time of arrival (TOA) data sets to probe the scalar corrections to the PKP. In particular, we focus on systems with large orbital frequencies as the contributions to the PKP terms induced by the disformal coupling are sensitive to higher frequencies. We find that the most constraining { {pulsar timings}} are PSR B1913+16 and the double pulsar PSR J0737-3039A/B, being {of the order of} the Cassini bound on the conformal coupling obtained from the Shapiro effect in the solar system. { {The combined constraints using other pulsar timings give an upper bound on the conformal coupling $β^2 < 2.33 \cdot 10^{-5}$ and a lower bound on the disformal coupling scale of $Λ\geq 1.12 \ {\rm MeV}$ which is comparable to the Cassini bound and to the GW-170817 constraints respectively}}. Future measurements for pulsar timing with black hole companions are also discussed.
description: 17 pages, 9 figures, Accepted in Phys. Rev. D
Análisis de los impuestos de industria y comercio, predial y a las ventas en el municipio de Cartagena en el periodo 1979-1986
Creators: name: Julio Salom, Betty
name: Emilliani, Ana Isabel
Publisher: name: Universidad de Cartagena
Year: 1987
Subjects: Industria y comercio
Impuesto predial

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía.
description: El presente estudio tiene por objeto realizar un análisis sobre las principales fuentes de ingreso del municipio para determinar su contribución al desarrollo económico y social de cartagena.
Magnetic Proximity Evoked Colossal Bulk Photovoltaics in Crystalline Symmetric Layers
Creators: name: Mu, Xingchi
name: Xue, Qianqian
name: Sun, Yan
name: Zhou, Jian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Bulk photovoltaic (BPV) effect, a second order nonlinear process that generates static current under light irradiation, requires centrosymmetric broken systems as its application platform. In order to realize measurable BPV photocurrent in spatially centrosymmetric materials, various schemes such as chemical doping, structural deformation, or electric bias have been developed. In the current work, we suggest that magnetic proximity effect via van der Waals interfacial interaction, a contact-free strategy, also breaks the centrosymmetry and generate large BPV photocurrents. Using the Bi2Te3 quintuple layer as an exemplary material, we show that magnetic proximity from MnBi2Te4 septuple layers yield finite and tunable shift and injection photocurrents. We apply group analysis and first-principles calculations to evaluate the layer-specific shift and injection current generations under linearly polarized light irradiation. We find that the magnetic injection photoconductivity that localized on the Bi2Te3 layer can reach over 70*108 A/(V2s), so that a 1D linear current density on the order of 0.1 mA/nm can be achieved under an intermediate intensity light. In addition to charge current, we also extend our discussions into spin BPV current, giving pure photo-generated spin current. The vertical propagation direction between the charge and spin photocurrents suggest that they can be used individually in a single material. Compared with previously reported methods, the magnetic proximity effect via van der Waals interface does not significantly alter the intrinsic feature of the centrosymmetric material (e.g., Bi2Te3), and its manipulation can be easily achieved by the proximate magnetic configurations (of MnBi2Te4), interlayer distance, and light polarization.
description: 7 figures, under peer review
Effects of drug substitution programs on offending among drug-addicts
Creators: name: Egli, Nicole
name: Pina, Miriam
name: Skovbo Christensen, Pernille
name: Aebi, Marcelo
name: Killias, Martin
Publisher: name: Universität Tübingen
Year: 2009
Subjects: subject: Suchttherapie , Substitution , Kriminalität , Prävention
subject: 360
subject: drug substitution
subject: crime
subject: review

description: Drug abusers are generally more involved in crime, in particular property crime, than people who are not drug abusers. Substitution programs have been developed in order to improve drug users’ quality of life and to decrease their criminal involvement. Several evaluations, but not all, have reported crime reductions following substitution therapies based on heroin and methadone prescription. Objectives: This systematic review is aimed at gaining an overall picture on the respective effects of prescription of methadone vs. heroin and other substances. Search strategy: Six databases (Medline, Campbell Crime and Justice Group, National Criminal Justice Reference Service, National Treatment Agency for Substance Misuse, JSTOR and Criminal Justice Abstracts) as well as relevant journals and websites (Harm reduction Journal, Journal of Substance Abuse Treatment, Drug and Alcohol Dependence, Drug and Alcohol Review, Drug and Therapeutics Bulletin, International Journal of Drug Policy, Journal of Clinical Psychopharmacology, Déviance et Société, Criminal Justice and Behavior, Criminologie, www.heroinstudie.de and www.drugscope.org.uk) have been searched for relevant studies meeting the inclusion criteria. Conclusion: Heroin maintenance has been found to significantly reduce criminal involvement among treated subjects, and it is more effective in crime reduction than methadone maintenance. Methadone maintenance greatly reduces criminal involvement, but apparently not significantly more so than other interventions. Buprenorphine and Naltrexone have been found to be promising, although few studies have been identified using these substances in maintenance treatment.
The role of exercise in the rehabilitation of patients with wrist fracture
Creators: name: Bruder, Andrea Maree
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the Degree of Doctor of Philosophy to the College of Science, Health and Engineering, School of Allied Health, Discipline of Physiotherapy, La Trobe University, Victoria, Australia.

Thesis with publications.

This thesis was a recipient of the Nancy Millis Award for theses of exceptional merit.
Fundamental aspects of steady-state conversion of heat to work at the nanoscale
Creators: name: Benenti, Giuliano
name: Casati, Giulio
name: Saito, Keiji
name: Whitney, Robert S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In recent years, the study of heat to work conversion has been re-invigorated by nanotechnology. Steady-state devices do this conversion without any macroscopic moving parts, through steady-state flows of microscopic particles such as electrons, photons, phonons, etc. This review aims to introduce some of the theories used to describe these steady-state flows in a variety of mesoscopic or nanoscale systems. These theories are introduced in the context of idealized machines which convert heat into electrical power (heat-engines) or convert electrical power into a heat flow (refrigerators). In this sense, the machines could be categorized as thermoelectrics, although this should be understood to include photovoltaics when the heat source is the sun. As quantum mechanics is important for most such machines, they fall into the field of quantum thermodynamics. In many cases, the machines we consider have few degrees of freedom, however the reservoirs of heat and work that they interact with are assumed to be macroscopic. This review discusses different theories which can take into account different aspects of mesoscopic and nanoscale physics, such as coherent quantum transport, magnetic-field induced effects (including topological ones such as the quantum Hall effect), and single electron charging effects. It discusses the efficiency of thermoelectric conversion, and the thermoelectric figure of merit. More specifically, the theories presented are (i) linear response theory with or without magnetic fields, (ii) Landauer scattering theory in the linear response regime and far from equilibrium, (iii) Green-Kubo formula for strongly interacting systems within the linear response regime, (iv) rate equation analysis for small quantum machines with or without ..... (SEE THE PDF FOR THE REST OF THIS ABSTRACT)
description: Review Article (158 pages). This is the final version (version 3) with typos corrected and a better layout. Some sections of this review are based on the shorter unpublished review arXiv:1311.4430
Necessary criterion for extracting thermodynamical work from qudit-entangled state
Creators: name: Nandi, Sumit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A novel criterion of extracting thermodynamical work from a bipartite pure qudit-entangled state by means of local operation and classical communication (LOCC) has been presented. We have shown that non-vanishing $G$-concurrence is a necessary condition to extract work from an higher dimensional entangled state in LOCC paradigm.
description: Accepted for publication in Pramana. Comments are welcome
School-Based Programs to Reduce Bullying and Victimization
Creators: name: Farrington, David P.
name: Ttofi, Maria M.
Publisher: name: Universität Tübingen
Year: 2009
Subjects: subject: Schule , Mobbing , Opfer
subject: 360
subject: 370
subject: School
subject: Bullying
subject: review

description: School bullying has serious short-term and long-term effects on children’s physical and mental health. Various anti-bullying programs have been implemented world wide and, more rarely, evaluated. Previous narrative reviews, summarizing the work done on bullying prevention, as well as previous meta-analyses of anti-bullying programs, are limited. The definition of school bullying includes several key elements: physical, verbal, or psychological attack or intimidation that is intended to cause fear, distress, or harm to the victim; an imbalance of power (psychological or physical), with a more powerful child (or children) oppressing less powerful ones; and repeated incidents between the same children over a prolonged period. School bullying can occur in school or on the way to or from school. It is not bullying when two persons of the same strength (physical, psychological, or verbal) victimize each other. This report presents a systematic review and meta-analysis of the effectiveness of programs designed to reduce school bullying perpetration and victimization (i.e. being bullied). The authors indicate the pitfalls of previous reviews and explain in detail how the present systematic review and meta-analysis addresses the gaps in the existing literature on bullying prevention.
Deserción estudiantil en la Universidad pública colombiana: Programa de Economía de la Universidad de Cartagena
Creators: name: González Pineda, Claudia Marcela
name: Beltran Ortega, Hernando Javier
Publisher: name: Universidad de Cartagena
Year: 2015
Subjects: Deserción universitaria
Deserción estudiantil - Aspectos socioeconómicos
Deserción - Universidad de Cartagena - Programa de Economía - Estudio de caso

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 2015
description: El objetivo de este trabajo de grado busca analizar los factores académicos, institucionales y socioeconómicos de la deserción estudiantil en la universidad pública colombiana: Programa de Economía de la Universidad de Cartagena.
Voxblox: Incremental 3D Euclidean Signed Distance Fields for On-Board MAV Planning
Creators: name: Oleynikova, Helen
name: Taylor, Zachary
name: Fehr, Marius
name: Nieto, Juan
name: Siegwart, Roland
Publisher: name: arXiv
Year: 2016
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Micro Aerial Vehicles (MAVs) that operate in unstructured, unexplored environments require fast and flexible local planning, which can replan when new parts of the map are explored. Trajectory optimization methods fulfill these needs, but require obstacle distance information, which can be given by Euclidean Signed Distance Fields (ESDFs). We propose a method to incrementally build ESDFs from Truncated Signed Distance Fields (TSDFs), a common implicit surface representation used in computer graphics and vision. TSDFs are fast to build and smooth out sensor noise over many observations, and are designed to produce surface meshes. Meshes allow human operators to get a better assessment of the robot's environment, and set high-level mission goals. We show that we can build TSDFs faster than Octomaps, and that it is more accurate to build ESDFs out of TSDFs than occupancy maps. Our complete system, called voxblox, will be available as open source and runs in real-time on a single CPU core. We validate our approach on-board an MAV, by using our system with a trajectory optimization local planner, entirely on-board and in real-time.
description: Submitted to IROS 2017. Videos available at https://www.youtube.com/watch?v=PlqT5zNsvwM and https://www.youtube.com/watch?v=lrGSwAPzMOQ
Is work addiction a ‘real’ addiction? A mixed mode analysis of work addiction experiences within an Australian context
Creators: name: Shaw, Daniel
Publisher: name: La Trobe
Year: 2023

description: Submission note: Submitted in partial fulfilment of the requirements for the degree of Doctor of Psychology in Counselling Psychology to the School of Psychology and Public Health, College of Science, Health and Engineering, La Trobe University, Bundoora.
Production and Characterization of Oat - Wheat Based Food Products
Creators: name: Habtamu, Shewarega
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2012

description: In this study the proximate composition and rheological properties of oat and wheat flour were investigated. The oat flour contained considerable amounts of protein (16.92%), total carbohydrates (64.65%) ash (1.80%), crude fiber (4.92%), moisture (5.61%) and fat (6.10%). The wheat flour also contained protein (13.56%), total carbohydrates (73.51%), ash (0.6%), crude fiber (0.32%), moisture (11.35%) and fat (0.98%). Based on these results, oat flour is nutritious and has a potential for use as composite flour in food formulations. Effects of oat flour supplementation (5%, 10%, and 15% of oat flour) on nutritional properties of the composite bread were investigated. The crude fiber, fat and protein all are increased as the addition of oat flour increased. The farinograph water absorption values of the composite flour (5%, 10%, and 15% of wheat flour) were 58.3%, 59.0% and 64.2% while the dough stability values were 8.5, 5.2 and 3.4 minutes; respectively. The dough development times were also 2.4, 3.0, and 4.3 minutes and that of the farinograph quality number were 99, 65 and 58 Brabender units; respectively. According to the results of wet gluten, falling number, and sedimentation values all decreased with the increase of oat flour supplementation (p<0.05) while color grade and oil absorption increased. The loaf volume of the composite flour bread were 340.6(100% wheat flour), 323.5 (5% oat flour), 298.4(10% oat flour), 250.3 (15% oat flour) and 210.9(100% oat flour). Loaf volume was significantly decreased with increase in level of incorporation of oat flour whereas loaf weight at 5%, 10% and 15% level of oat incorporation was significantly lower as compared to 100% oat supplementation (p<0.05). Results of this research suggested that supplementation of oat flour up to 10% results in bread with acceptable qualities. Oat flakes were prepared from locally grown varieties. The major parameters (specific weight, flake thickness and moisture content) which mostly affect the quality of oat flakes were measured and compared with the control oat flake. Specific weight, flake thickness and moisture content values were 0.53gm/L, 0.51mm and 9.5; respectively. These results are not significantly different to that of the control one. The sensory evaluation results also suggested that the flakes are acceptable. The economic analysis of the composite bread production plant revealed that it is profitable to produce the product. Key words: Composite bread, Farinograph values, Flour supplementation, Oat flake, Wet gluten
Políticas de inversión de capital humano implementadas en Asistencia Personalizada S.A.
Creators: name: Caraballo Navarro, Sandra Marcela
name: Leal Fuentes, Katherine Johana
Publisher: name: Universidad de Cartagena
Year: 2015
Subjects: Capital humano
Administración de personal
Recursos humanos

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas a Distancia, 2015
description: El presente trabajo de grado pretende proponer las políticas de inversión de capital humano que se deben implementar en la empresa en pro de la disminución de la deserción de los trabajadores.
Mapping the Milky Way Disk with Gaia DR3: 3D extended kinematic maps and rotation curve to $\approx 30$ kpc
Creators: name: Wang, Hai-Feng
name: Chrobáková, Žofia
name: López-Corredoira, Martín
name: Labini, Francesco Sylos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We apply a statistical deconvolution of the parallax errors based on Lucy's inversion method (LIM) to the Gaia-DR3 sources to measure their three dimensional velocity components in the range of Galactocentric distances $R$ between 8 kpc and 30 kpc with their corresponding errors and root mean square values. We find results that are consistent with those obtained by applying LIM to the Gaia-DR2 sources, and we conclude that the method gives convergent and more accurate results by improving the statistics of the data-set and lowering observational errors. The kinematic maps reconstructed with LIM up to $R \approx 30$ kpc show that the Milky Way is characterized by asymmetrical motions with significant gradients in all velocity components. Furthermore, we determine the Galaxy rotation curve $V_C(R)$ up to $\approx 27.5$ kpc with the cylindrical Jeans equation assuming an axisymmetric gravitational potential. We find that $V_C(R)$ is significantly declining up to the largest radius investigated. Finally, we also measure $V_C(R)$ at different vertical heights, showing that, for $R <15$ kpc, there is a marked dependence on $Z$, whereas at larger $R$ the dependence on $Z$ is negligible.
description: 14 pages, 10 figures, 1 table. Accepted for publication in The Astrophysical Journal
Effective long wavelength scalar dynamics in de Sitter
Creators: name: Moss, Ian
name: Rigopoulos, Gerasimos
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the effective infrared theory governing a light scalar's long wavelength dynamics in de Sitter spacetime. We show how the separation of scales around the physical curvature radius $k/a \sim H$ can be performed consistently with a window function and how short wavelengths can be integrated out in the Schwinger-Keldysh path integral formalism. At leading order, and for time scales $Δt \gg H^{-1}$, this results in the well-known Starobinsky stochastic evolution. However, our approach allows for the computation of quantum UV corrections, generating an effective potential on which the stochastic dynamics takes place. The long wavelength stochastic dynamical equations are now second order in time, incorporating temporal scales $Δt \sim H^{-1}$ and resulting in a Kramers equation for the probability distribution - more precisely the Wigner function - in contrast to the more usual Fokker-Planck equation. This feature allows us to non-perturbatively evaluate, within the stochastic formalism, not only expectation values of field correlators, but also the stress-energy tensor of $ϕ$.
description: 25 pages, 2 figures; v2: small changes, matches published JCAP version
Thermodynamic uncertainty relation from involutions
Creators: name: Salazar, Domingos S. P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Thermodynamic Uncertainty Relation (TUR) is a lower bound for the variance of a current as a function of the average entropy production and average current. Depending on the assumptions, one obtains different versions of the TUR. For instance, from the exchange fluctuation theorem, one obtains a corresponding exchange TUR. Alternatively, we show that TURs are a consequence of a very simple property: every process $s$ has only one inverse $s'=m(s)$, where $m$ is an involution, $m(m(s))=s$. This property allows the derivation of a general TUR without using any fluctuation theorem. As applications, we obtain the exchange TUR, the asymmetric TUR, a fluctuation-response inequality and lower bounds for the entropy production in terms of other nonequilibrium metrics.
Detection of Strongly Lensed Arcs in Galaxy Clusters with Transformers
Creators: name: Jia, Peng
name: Sun, Ruiqi
name: Li, Nan
name: Song, Yu
name: Ning, Runyu
name: Wei, Hongyan
name: Luo, Rui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Strong lensing in galaxy clusters probes properties of dense cores of dark matter halos in mass, studies the distant universe at flux levels and spatial resolutions otherwise unavailable, and constrains cosmological models independently. The next-generation large scale sky imaging surveys are expected to discover thousands of cluster-scale strong lenses, which would lead to unprecedented opportunities for applying cluster-scale strong lenses to solve astrophysical and cosmological problems. However, the large dataset challenges astronomers to identify and extract strong lensing signals, particularly strongly lensed arcs, because of their complexity and variety. Hence, we propose a framework to detect cluster-scale strongly lensed arcs, which contains a transformer-based detection algorithm and an image simulation algorithm. We embed prior information of strongly lensed arcs at cluster-scale into the training data through simulation and then train the detection algorithm with simulated images. We use the trained transformer to detect strongly lensed arcs from simulated and real data. Results show that our approach could achieve 99.63 % accuracy rate, 90.32 % recall rate, 85.37 % precision rate and 0.23 % false positive rate in detection of strongly lensed arcs from simulated images and could detect almost all strongly lensed arcs in real observation images. Besides, with an interpretation method, we have shown that our method could identify important information embedded in simulated data. Next step, to test the reliability and usability of our approach, we will apply it to available observations (e.g., DESI Legacy Imaging Surveys) and simulated data of upcoming large-scale sky surveys, such as the Euclid and the CSST.
description: Submitted to the Astronomical Journal, source code could be obtained from PaperData sponsored by China-VO group with DOI of 10.12149/101172. Cloud computing resources would be released under request
Spectral theory for random Poincaré maps
Creators: name: Baudel, Manon
name: Berglund, Nils
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 60J60, 60J35 (primary), 34F05, 45B05 (secondary)

description: We consider stochastic differential equations, obtained by adding weak Gaussian white noise to ordinary differential equations admitting $N$ asymptotically stable periodic orbits. We construct a discrete-time, continuous-space Markov chain, called a random Poincaré map, which encodes the metastable behaviour of the system. We show that this process admits exactly $N$ eigenvalues which are exponentially close to $1$, and provide expressions for these eigenvalues and their left and right eigenfunctions in terms of committor functions of neighbourhoods of periodic orbits. The eigenvalues and eigenfunctions are well-approximated by principal eigenvalues and quasistationary distributions of processes killed upon hitting some of these neighbourhoods. The proofs rely on Feynman--Kac-type representation formulas for eigenfunctions, Doob's $h$-transform, spectral theory of compact operators, and a recently discovered detailed-balance property satisfied by committor functions.
description: 59 pages, 5 figures
title: Sphingolipids and the IL-33/ST2 axis: Is there a link between these signaling pathways in the pathophysiology of systemic sclerosis?
Creators: name: Wagner, Annika
name: Köhm, Michaela
name: Nordin, Annica
name: Svenungsson, Elisabet
name: Burkhardt, Harald Louis
name: Radeke, Heinfried H.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Background: Systemic sclerosis (SSc) is a clinically heterogeneous disease with an unclear etiology. It is mainly characterized by impaired angiogenesis and multi-organ fibrosis. The pathophysiology of SSc is not fully understood. First evidence indicates an involvement of both the IL-33/ST2 axis[for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Mode selection in compressible active flow networks
Creators: name: Forrow, Aden
name: Woodhouse, Francis G.
name: Dunkel, Jörn
Publisher: name: arXiv
Year: 2016
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Coherent, large scale dynamics in many nonequilibrium physical, biological, or information transport networks are driven by small-scale local energy input. Here, we introduce and explore an analytically tractable nonlinear model for compressible active flow networks. In contrast to thermally-driven systems, we find that active friction selects discrete states with a limited number of oscillation modes activated at distinct fixed amplitudes. Using perturbation theory, we systematically predict the stationary states of noisy networks and find good agreement with a Bayesian state estimation based on a hidden Markov model applied to simulated time series data. Our results suggest that the macroscopic response of active network structures, from actomyosin force networks to cytoplasmic flows, can be dominated by a significantly reduced number of modes, in contrast to energy equipartition in thermal equilibrium. The model is also well-suited to study topological sound modes and spectral band gaps in active matter.
description: new title, several text and figure changes, new results on band gaps added, supplementary information now included
Factors Influencing Effectiveness of Monitoring and Evaluation System: The Case of Commercial Bank of Ethiopia Information Technology Projects
Creators: name: Abera, Kassahun
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: This study sought to analyze the factors influencing effectiveness of a monitoring and evaluation system for Commercial Bank of Ethiopia IT projects. The study adopted a descriptive research design in solving the research problem. The study targeted 62 employees of Commercial Bank of Ethiopia project office. Due to their small number, a census was conducted. The response rate was 90%. The study utilized a questionnaire in collecting primary data. Collected data was edited, sorted, cleaned and coded for data analysis using SPSS statistical package version 20. The findings were analyzed using means, standard deviation, percentages and frequencies then presented using tables. Competence of staff handling monitoring and evaluation, Budget allocation to monitoring and evaluation, stakeholders participation and organization leadership were found to have a positive correlation with effectiveness of M&E system with correlation coefficients of 0.842, 0.836, 0.858 and 0.802 respectively. The study suggest this study may be replicated into other banks to enable generalization to be made with regard to factors influencing effectiveness of monitoring and evaluation of information technology projects by commercial banks in Ethiopia.
Variación de la calidad del agua de la Ciénaga de la Virgen de Cartagena producto de la implementación del emisario submarino
Creators: name: Arenas Palomino, Dainis
name: Serje Ahumada, Nadya
Publisher: name: Universidad de Cartagena
Year: 2015
Subjects: Agua - Análisis
Ciénaga de la Virgen - Calidad del agua

description: Tesis (Ingeniero Civil).--Universidad de Cartagena. Facultad de Ciencias E Ingenierías. Programa de Ingeniería Civil, 2015
description: El presente trabajo investigativo tiene como objetivo en estimar la variación de la calidad del agua de la Ciénaga de la Virgen de la ciudad de Cartagena de Indias mediante el cálculo de índices de calidad, luego de la construcción y entrada en operación del Emisario Submarino en Enero del año 2013, a través de la comparación de parámetros físicos, químicos y microbiológicos actuales, con los que se han tomado históricamente, y así verificar que se han cumplido a cabalidad los objetivos trazados al inicio del proyecto Emisario Submarino.