cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Balance of inflammatory pathways and interplay of immune cells in the liver during homeostasis and injury
Creators: name: Baeck, Christer
name: Tacke, Frank
Publisher: name: Technische Universität Dortmund
Year: 2014
Subjects: subject: inflammation
subject: liver fibrosis
subject: apoptosis
subject: monocytes
subject: cytokines
subject: chemokines
subject: NF-kB
subject: TNF
subject: 610

description: Multiple potentially harmful stimuli challenge the liver, the chief metabolic and detoxifying organ of the human body. Due to its central an atomical location, continuous blood flow from the gastrointestinal tract through the hepatic sinusoids allows the metabolically active hepatocytes, the non-parenchymal cells and the various immune cell populations residing and patrolling in the liver to interact with antigens and microbiological components coming from the intestine. Cytokines are key mediators within the complex interplay of intrahepatic immune cells and hepatocytes, because they can activate effector functions of immune cells as well as hepatocytic intracellular signaling pathways controlling cellular homeostasis. Kupffer cells and liver-infiltrating monocyte-derived macrophages are primary sources of cytokines such as tumor necrosis factor (TNF). The liver is also enriched in natural killer (NK) and natural killer T (NKT) cells, which fulfill functions in pathogen defense, T cell recruitment and modulation of fibrogenic responses. TNF can activate specific intracellular pathways in hepatocytes that influence cell fate in different manners, e.g. pro-apoptotic signals via the caspase cascade, but also survival pathways, namely the nuclear factor (NF)-kappaB pathway. NF-kappaB regulates important functions in liver physiology and pathology. The exact dissection of the contribution of recruited and resident immune cells, their soluble cytokine and chemokine mediators and the intracellular hepatocytic response in liver homeostasis and injury could potentially identify novel targets for the treatment of acute and chronic liver disease, liver fibrosis or cirrhosis.
description: EXCLI Journal ; Vol. 13, 2014
Task-Oriented Data Compression for Multi-Agent Communications Over Bit-Budgeted Channels
Creators: name: Mostaani, Arsham
name: Vu, Thang X.
name: Chatzinotas, Symeon
name: Ottersten, Björn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: Multiagent Systems (cs.MA)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Various applications for inter-machine communications are on the rise. Whether it is for autonomous driving vehicles or the internet of everything, machines are more connected than ever to improve their performance in fulfilling a given task. While in traditional communications the goal has often been to reconstruct the underlying message, under the emerging task-oriented paradigm, the goal of communication is to enable the receiving end to make more informed decisions or more precise estimates/computations. Motivated by these recent developments, in this paper, we perform an indirect design of the communications in a multi-agent system (MAS) in which agents cooperate to maximize the averaged sum of discounted one-stage rewards of a collaborative task. Due to the bit-budgeted communications between the agents, each agent should efficiently represent its local observation and communicate an abstracted version of the observations to improve the collaborative task performance. We first show that this problem can be approximated as a form of data-quantization problem which we call task-oriented data compression (TODC). We then introduce the state-aggregation for information compression algorithm (SAIC) to solve the formulated TODC problem. It is shown that SAIC is able to achieve near-optimal performance in terms of the achieved sum of discounted rewards. The proposed algorithm is applied to a geometric consensus problem and its performance is compared with several benchmarks. Numerical experiments confirm the promise of this indirect design approach for task-oriented multi-agent communications.
description: 19 pages, 11 figures
Lerntagebücher in der Studieneingangsphase – eine Bilanz
Creators: name: Griese, Birgit
name: Kallweit, Michael
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Lerntagebücher versprechen eine Kombination von Reflexion und Selbstregulation in einem für Forschungszwecke auswertbaren Format. Im Projekt MP² -Mathe/Plus, das Ingenieurstudierende in der Studieneingangsphase beim Lernen von Mathematik begleitet, wurden über Jahre Erfahrungen mit verschiedenen Lerntagebüchern gesammelt. Unsere Bilanz liefert Erkenntnisse über die Akzeptanz in der betrachteten Zielgruppe.
Investigating the efficiency of the Asian handicap football betting market with ratings and Bayesian networks
Creators: name: Constantinou, Anthony
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Despite the massive popularity of the Asian Handicap (AH) football (soccer) betting market, its efficiency has not been adequately studied by the relevant literature. This paper combines rating systems with Bayesian networks and presents the first published model specifically developed for prediction and assessment of the efficiency of the AH betting market. The results are based on 13 English Premier League seasons and are compared to the traditional market, where the bets are for win, lose or draw. Different betting situations have been examined including a) both average and maximum (best available) market odds, b) all possible betting decision thresholds between predicted and published odds, c) optimisations for both return-on-investment and profit, and d) simple stake adjustments to investigate how the variance of returns changes when targeting equivalent profit in both traditional and AH markets. While the AH market is found to share the inefficiencies of the traditional market, the findings reveal both interesting differences as well as similarities between the two.
Análisis del proceso de planeación nacional en Colombia
Creators: name: Cabarcas Tapias, Ruben D.
name: Castillo Cabarcas, Victor R.
Publisher: name: Universidad de Cartagena
Year: 1987
Subjects: Desarrollo económico
Planeación nacional en Colombia-Análisis del proceso

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1987.
description: El presente estudio tiene por objeto realizar un análisis del proceso de planeación en colombia desde sus inicios, la evolución de este proceso y los beneficios que el ha reportado al país.
Assessment Of Practices, Challenges And Prospects Of In-House Solid Waste Management In Addis Ababa; The Case Of Yeka Subcity
Creators: name: Kibrekidusan, Solomon
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The rapid growth of urbanization causes enormous pressure on the environment. The main aim of this study was to assess the challenges and prospects regarding in-house solid waste management in Yeka Sub-City, Addis Ababa, Ethiopia. A total 130 respondents, 10 interviewees and field observations were used in the study. In order to accomplish the objectives, both primary and secondary sources of data were used. The primary data were collected through questionnaires, interviews and field observations. Whereas the secondary data were extracted from different published and unpublished materials. The analysis of this paper was carried out using both qualitative and quantitative techniques. There was very poor and inadequate solid waste management in general and waste handling in particular in the sub-city. Thus the municipality of the sub-city could not be able to provide adequate solid waste management practices. The findings of this study revealed that higher income group's households showed better solid waste management than lower income groups. The level of education of households showed a positive correlation with solid waste management. Location and distance of community waste containers had also direct impact on solid waste management in which the further the location of the storage the lower the level of waste management. The municipality of the town was not able to provide adequate solid waste management service because of the factors related to financial constraints, very poor institutional coordination, weak enforcement of rules and regulations, socio-cultural factors and lack of awareness among the community. Thus it was recommended that to increase awareness of the community, responsible bodies (Government, Community and Health Bureu) should pay attention to the issue in order to improve the current poor solid waste management practices in the town
Diseño de un modelo de control interno en la empresa prestadora de servicios hoteleros eco turísticos nativos activos eco hotel la Cocotera, que permitirá el mejoramiento de la información financiera
Creators: name: Posso Rodelo, Johana
name: Barrios Barrios, Mauricio
Publisher: name: Universidad de Cartagena
Year: 2014
Subjects: Control interno;
Control interno - Diseño

description: Tesis (Contador Publico).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Contaduría, 2014
description: La empresa prestadora de servicios hoteleros Nativos Activos Eco hotel La Cocotera no cuenta en la actualidad con una estructura orgánica financiera y contable adecuada, esto se debe a que no aplican métodos, procedimientos y políticas relacionadas con el control interno, no poseen plan de cuentas, registros y prácticas contables vigentes que garanticen la preparación de los Estados Financieros y certifique la adecuada administración y custodia de los recursos o activos de la entidad; esto ha generado que la dirección de la organización no haya logrado cumplir con los objetivos propuestos; y además asumió riesgos muy altos como registros errados en las diversas transacciones y el control deficiente de los activos, pasivos, ingresos y egresos.
Handlungsbedarf in fachmathematischen Veranstaltungen? – Spezielle Maßnahmen an der Universität Paderborn
Creators: name: Panse, Anja
name: Hilgert, Joachim
name: Hoffmann, Max
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Die Ausbildung angehender Mathematiklehrer geht sowohl seitens der Studierenden, als auch der Dozenten mit Unzufriedenheiten einher. In diesem Beitrag werden Beobachtungen bezüglich fachmathematischer Veranstaltungen beschrieben und entsprechende Maßnahmen vorgestellt. Der Schwerpunkt liegt auf der Erstsemesterveranstaltung „Einführung in mathematisches Denken und Arbeiten“, die bei gleichbleibendem Inhalt mehrere Semester in jeweils unterschiedlicher methodischer Aufbereitung angeboten wird.
Mechanism-based pharmacokinetic/pharmacodynamic modelling and meta-analysis to address challenges in antibiotic therapy for specific patient populations
Creators: name: AGYEMAN, AKOSUA ADOM
Publisher: name: Monash University
Year: 2021
Subjects: Clinical pharmacy and pharmacy practice

description: The emergence of antibiotic-resistant bacteria is a major global challenge. Especially in patients with life-threating infections (e.g., critically ill patients with augmented renal clearance and patients with cystic fibrosis), the poor effectiveness of monotherapies has necessitated the use of combination antibiotic regimens to reduce risk of treatment failure. In this context, innovative approaches to maximise efficacy and minimise resistance emergence are essential. Thus, this thesis combines evidence from in vitro static and dynamic experiments, mechanism-based modelling, Monte Carlo simulations, and meta-analysis to provide insights into optimisation of antibiotic combination therapies that maximise bacterial killing and suppress the emergence of resistance.
Selling sex: what determines rates and popularity? An analysis of 11,500 online profiles
Creators: name: Mergenthaler, Alicia
name: Yasseri, Taha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Sex work, or the exchange of sexual services for money or goods, is ubiquitous across eras and cultures. However, the practice of selling sex is often hidden due to stigma and the varying legal status of sex work. Online platforms that sex workers use to advertise services have become an increasingly important means of studying a market that is largely hidden. Although prior literature has primarily shed light on sex work from a public health or policy perspective (focusing largely on female sex workers), there are few studies that empirically research patterns of service provision in online sex work. This study investigated the determinants of pricing and popularity in the market for commercial sexual services online by using data from the largest UK network of online sexual services, a platform that is the industry-standard for sex workers. While the size of these influences varies across genders, nationality, age and the services provided are shown to be primary drivers of rates and popularity in sex work.
description: Main manuscript and Supplementary Information
Formación e integración comunitaria: Opción estratégica para el desarrollo local
Creators: name: Guerreo Villegas, Elisabet
Publisher: name: Universidad de Cartagena
Year: 2003
Subjects: Desarrollo de la comunidad
Comunidades - Asistencia técnica

description: Tesis (Trabajadora Social) -- Universidad de Cartagena. Facultad de Ciencias Sociales y Educación. Programa de Trabajo Social, 2003
description: Logros, avances y la evaluación del proceso de intervención profesional, donde el quehacer del trabajador social estuvo direccionado a impulsar un proceso formativo con las organizaciones de bases, de las unidades comuneras del gobierno N° 8,9 y 10 de la localidad histórica y del caribe norte de Cartagena.
The Practice in the Link between Strategic Management and Project Management in Local Non-Governmental Organizations: Case Study of Hope Enterprise
Creators: name: Ayalew, Beruk
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: This project study work is about The Practice in the Link between Strategic Management and Project Management in Local Non-Governmental Organizations: Case Study of Hope Enterprise, where the notion of strategic management and strategic planning has come a long way in the practices of project management in NGOs. Accordingly, the researcher came up with a major research idea of which strategic planning and project management can be linked for project success in NGOs. The research tried to assess a specific case study project. Raising three research questions on the practices and procedures used on connecting strategic planning with project management issues by studying a local NGOs specifically HOPE ENTERRISE for further indication of the two concepts to fulfill the objectives of the study. The methodology was designed as an intensive interview then later descriptive analysis were made. The qualitative research came up with a finding that strategic planning and project management are linked concepts that project are formulated from the strategic plan document and in order to do that organization first must came up with a good strategic plan following the strategic planning process and dealing all the thing that must be fulfilled. After that the projects can be formulated one by one from the strategic. In a way project are the way organization execute their vision and mission. Finally, conclusions and recommendations were made on the outsourcing of projects to international contractors, trading off the three pillars and further researchable areas.
title: Host microbiota constantly control maturation and function of microglia in the central nervous system
Creators: name: Erny, Daniel
name: Prinz, Marco
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: As tissue macrophages of the central nervous system (CNS), microglia are critically involved in diseases of the CNS. However, it remains unknown what controls their maturation and activation under homeostatic conditions. Here we reveal significant contributions of the host microbiota to microglia homeostasis[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Low-light Environment Neural Surveillance
Creators: name: Potter, Michael
name: Gridley, Henry
name: Lichtenstein, Noah
name: Hines, Kevin
name: Nguyen, John
name: Walsh, Jacob
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.4.9; I.5.4

description: We design and implement an end-to-end system for real-time crime detection in low-light environments. Unlike Closed-Circuit Television, which performs reactively, the Low-Light Environment Neural Surveillance provides real time crime alerts. The system uses a low-light video feed processed in real-time by an optical-flow network, spatial and temporal networks, and a Support Vector Machine to identify shootings, assaults, and thefts. We create a low-light action-recognition dataset, LENS-4, which will be publicly available. An IoT infrastructure set up via Amazon Web Services interprets messages from the local board hosting the camera for action recognition and parses the results in the cloud to relay messages. The system achieves 71.5% accuracy at 20 FPS. The user interface is a mobile app which allows local authorities to receive notifications and to view a video of the crime scene. Citizens have a public app which enables law enforcement to push crime alerts based on user proximity.
description: Pre-print, accepted to IEEE International Workshop on Machine Learning for Signal Processing 2020 Conference Proceedings. Code and dataset are available at https://github.com/mcgridles/
Learning Optimized Risk Scores
Creators: name: Ustun, Berk
name: Rudin, Cynthia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (stat.ML)
subject: Optimization and Control (math.OC)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Risk scores are simple classification models that let users make quick risk predictions by adding and subtracting a few small numbers. These models are widely used in medicine and criminal justice, but are difficult to learn from data because they need to be calibrated, sparse, use small integer coefficients, and obey application-specific operational constraints. In this paper, we present a new machine learning approach to learn risk scores. We formulate the risk score problem as a mixed integer nonlinear program, and present a cutting plane algorithm for non-convex settings to efficiently recover its optimal solution. We improve our algorithm with specialized techniques to generate feasible solutions, narrow the optimality gap, and reduce data-related computation. Our approach can fit risk scores in a way that scales linearly in the number of samples, provides a certificate of optimality, and obeys real-world constraints without parameter tuning or post-processing. We benchmark the performance benefits of this approach through an extensive set of numerical experiments, comparing to risk scores built using heuristic approaches. We also discuss its practical benefits through a real-world application where we build a customized risk score for ICU seizure prediction in collaboration with the Massachusetts General Hospital.
Necesidad de una actitud moral respaldada por el derecho de la teoría de acción comunicativa
Creators: name: Alarcón Cantillo, Jorge
Publisher: name: Universidad de Cartagena
Year: 2008
Subjects: Habermas, Jurgen - Crítica e interpretación
Comunicación en ciencias sociales - Estrategias

description: Tesis (Filósofo) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Filosofía, 2008
description: En este trabajo propongo que se haga una revaloración de la moral como elemento indispensable en busca del bien común, resaltando la necesidad que la moral tiene del derecho como mecanismo de canalización y conciliación entre los afectados. Aquí es importante destacar las consideraciones de Habermas acerca del derecho como un sistema aglutinador de la sociedad, mediador y controlador de las acciones.
Directions in Abusive Language Training Data: Garbage In, Garbage Out
Creators: name: Vidgen, Bertie
name: Derczynski, Leon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Data-driven analysis and detection of abusive online content covers many different tasks, phenomena, contexts, and methodologies. This paper systematically reviews abusive language dataset creation and content in conjunction with an open website for cataloguing abusive language data. This collection of knowledge leads to a synthesis providing evidence-based recommendations for practitioners working with this complex and highly diverse data.
description: 26 pages, 5 figures
En nombre de la historia: el giro historiográfico en Cartagena de indias, 1990-2006”
Creators: name: Viaña Fontalvo, Gabriela
Publisher: name: Universidad de Cartagena
Year: 2018
Subjects: Historiografía - Cartagena de Indias - 1990 - 2006
Cartagena de Indias - 1990 - 2006 - Historia

description: Tesis (Historiador) – Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Historia, 2018
description: Esta investigación tiene por objetivo realizar una reflexión histórica acera del giro historiográfico que sufrió el estudio y la concepción de la Historia en la ciudad de Cartagena de Indias, visto como resultado de los anteriores procesos de institucionalización y profesionalización de la disciplina en la región Caribe. Se toma el caso del programa de Historia de la Universidad de Cartagena por la relevancia que tuvo en este proceso. Se muestra a través de los intelectuales que hicieron parte de la creación y los cambios que surgieron dentro de la temporalidad escogida. Los ritmos y enfoques historiográficos, metodológicos y teóricos en los cuales se comenzó a estudiar la historia en la Universidad de Cartagena son variables importantes para esta investigación. La base documental se encuentra en el archivo de dicho programa, además de entrevistas con tres de sus fundadores.
Quantum State Transfer via Noisy Photonic and Phononic Waveguides
Creators: name: Vermersch, Benoît
name: Guimond, Pierre-Olivier
name: Pichler, Hannes
name: Zoller, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe a quantum state transfer protocol, where a quantum state of photons stored in a first cavity can be faithfully transferred to a second distant cavity via an infinite 1D waveguide, while being immune to arbitrary noise (e.g. thermal noise) injected into the waveguide. We extend the model and protocol to a cavity QED setup, where atomic ensembles, or single atoms representing quantum memory, are coupled to a cavity mode. We present a detailed study of sensitivity to imperfections, and develop a quantum error correction protocol to account for random losses (or additions) of photons in the waveguide. Our numerical analysis is enabled by Matrix Product State techniques to simulate the complete quantum circuit, which we generalize to include thermal input fields. Our discussion applies both to photonic and phononic quantum networks.
description: 4+10 pages
Variational Autoencoders for Anomalous Jet Tagging
Creators: name: Cheng, Taoli
name: Arguin, Jean-François
name: Leissner-Martin, Julien
name: Pilette, Jacinthe
name: Golling, Tobias
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We present a detailed study on Variational Autoencoders (VAEs) for anomalous jet tagging at the Large Hadron Collider. By taking in low-level jet constituents' information, and training with background QCD jets in an unsupervised manner, the VAE is able to encode important information for reconstructing jets, while learning an expressive posterior distribution in the latent space. When using the VAE as an anomaly detector, we present different approaches to detect anomalies: directly comparing in the input space or, instead, working in the latent space. In order to facilitate general search approaches such as bump-hunt, mass-decorrelated VAEs based on distance correlation regularization are also studied. We find that the naive mass-decorrelated VAEs fail at maintaining proper detection performance, by assigning higher probabilities to some anomalous samples. To build a performant mass-decorrelated anomalous jet tagger, we propose the Outlier Exposed VAE (OE-VAE), for which some outlier samples are introduced in the training process to guide the learned information. OE-VAEs are employed to achieve two goals at the same time: increasing sensitivity of outlier detection and decorrelating jet mass from the anomaly score. We succeed in reaching excellent results from both aspects. Code implementation of this work can be found at https://github.com/taolicheng/VAE-Jet
description: 36 pages, 23 figures. To appear in Physical Review D
Controlled Lagrangians and Stabilization of Euler--Poincaré Mechanical Systems with Broken Symmetry I: Kinetic Shaping
Creators: name: Contreras, César
name: Ohsawa, Tomoki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 34H15, 37J15, 53D20, 70E17, 70H33, 70Q05, 93D05, 93D15

description: We extend the method of controlled Lagrangians with kinetic shaping to those mechanical systems on semidirect product Lie groups with broken symmetry, more specifically to the Euler--Poincaré equations with advected parameters. We find a matching condition for the controlled Lagrangian for such systems whose configuration manifold is a general semidirect product Lie group $\mathsf{G} \ltimes V$. Our motivating examples are a bottom-heavy underwater vehicle and a top spinning on a movable base. Their configuration space is the special Euclidean group $\mathsf{SE}(3) = \mathsf{SO}(3) \ltimes \mathbb{R}^{3}$, where the $\mathsf{SE}(3)$-symmetry is broken by the gravity. The controls resulting from the matching condition stabilize unstable equilibria of these examples. Furthermore, the matching helps us find additional dissipative controls that asymptotically stabilize those unstable equilibria.
description: 29 pages, 10 figures
Recursos Educativos Digitales para fortalecer la competencia de resolución de problemas matemáticos en estudiantes de grado sexto de la IED Liceo Samario de Santa Marta
Creators: name: Blanco Quintero, Josefina
Publisher: name: Universidad de Cartagena
Year: 2021
Subjects: subject: Tecnología educativa
subject: Innovaciones educativas
subject: Matemáticas - Enseñanza

description: En la actualidad, hablar de una educación de calidad es tocar muchos aspectos dentro del proceso de enseñanza y aprendizaje y uno de estos es el compromiso que tienen los docentes de forjar ciudadanos capaces de competir en la sociedad del conocimiento y en un mundo globalizado que demanda el desarrollo de competencias tecnológicas en todos los sectores productivos. El presente estudio tuvo lugar en la IED Liceo Samario de la ciudad de Santa Marta Magdalena teniendo como finalidad desarrollar la competencia en resolución de problemas matemáticos específicos de la geometría en los estudiantes de grado sexto incorporando Recursos Educativos Digitales. Se realizó bajo el enfoque cualitativo dando como resultado la gran apropiación que tienen los estudiantes en la solución de problemas matemáticos específicos de la geometría usando el programa GeoGebra. Por otra parte, se evidenció que los docentes en su mayoría no incorporan a sus clases programas específicos del área para enriquecer sus prácticas.
Bayesian hierarchical models for the prediction of the driver flow and passenger waiting times in a stochastic carpooling service
Creators: name: Papoutsis, Panayotis
name: Michel, Bertrand
name: Philippe, Anne
name: Duong, Tarn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Carpooling is an integral component in smart carbon-neutral cities, in particular to facilitate homework commuting. We study an innovative carpooling service developed by the start-up Ecov which specialises in homework commutes in peri-urban and rural regions. When a passenger makes a carpooling request, a designated driver is not assigned as in a traditional carpooling service; rather the passenger waits for the first driver, from a population of non-professional drivers who are already en route, to arrive. We propose a two-stage Bayesian hierarchical model to overcome the considerable difficulties, due to the sparsely observed driver and passenger data from an embryonic stochastic carpooling service, to deliver high-quality predictions of driver flow and passenger waiting times. The first stage focuses on the driver flow, whose predictions are aggregated at the daily level to compensate the data sparsity. The second stage processes this single daily driver flow into sub-daily (e.g. hourly) predictions of the passenger waiting times. We demonstrate that our model mostly outperforms frequentist and non-hierarchical Bayesian methods for observed data from operational carpooling service in Lyon, France and we also validated our model on simulated data.
Project Management Effectiveness in relation to Post Merger Integration: The case of Ethiopian Construction Design and Supervision Works Corporation
Creators: name: Zewdie, Ejigayehu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: number of strategies to deal with raising efficiency and productivity. One of such strategies is to enter into mergers or acquisitions (M&A). However, it has been reported that many companies fail to meet the expected synergy value and it takes longer time to achieve better performances. It is also known that integration processes during the post-merger integration period are critical to synergistic effects and performance of the merged companies over time. The Ethiopian Construction Design and Supervision Works Corporation (ECDSWCo) is the result of the amalgamation of three formerly independent public enterprises. As a project-driven professional service giving organization, its business is structured around the delivery of projects; and project management (PM) is the business itself. An extensive review of M&A and PM literatures conducted and the key factors for successful integration and project management effectiveness identified. Then the post-merger integration (PMI) and project management (PM) practices of the company examined for the possible correlation between the PMI success and its effect in the project management effectiveness of the company; with the hope to developing a usable framework that can be adopted. Concurrent mixed methods, which involve collecting analyzing and interpreting data using both quantitative and qualitative methods, are applied to draw empirical data from 36 project management staff of ECDSWCo. The results are statistically analyzed for reliability and correlation using SPSS, Cronbach's alpha reliability test and Bi-variate correlation tests. The results showed statistically significant positive correlations between PMI and a positive influence of PMI and its contributing variables on PME.
Nonlocal Kirchhoff superlinear equations with indefinite nonlinearity and lack of compactness
Creators: name: Li, Lin
name: Rădulescu, Vicenţiu D.
name: Repovš, Dušan D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J20, 35J50, 35J60

description: We study the following Kirchhoff equation $$- \left(1 + b \int_{\mathbb{R}^3} |\nabla u|^2 dx \right) Δu + V(x) u = f(x,u), \ x \in \mathbb{R}^3.$$ A special feature of this paper is that the nonlinearity $f$ and the potential $V$ are indefinite, hence sign-changing. Under some appropriate assumptions on $V$ and $f$, we prove the existence of two different solutions of the equation via the Ekeland variational principle and Mountain Pass Theorem.
title: Degeneration of the cerebellum and brainstem in Huntington’s disease (HD)
Creators: name: Rüb, Udo
name: Brunt, Ewout
name: Heinsen, Helmut
name: Seidel, Kay
name: Stratmann, Katharina
name: Paulson, Henry
name: Vonsattel, Jean Paul
name: Den Dunen, Wilfred
name: Korf, Horst-Werner
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Huntington’s disease (HD) is a progressive polyglutamine disease which is characterized neuropathologically by severe neuronal loss in the striatum and select layers of the neo-and allocortex. The cerebellum and brainstem are among the brain sites whose neuropathological state in[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Local-to-Global-rigidity of lattices in $SL_n(\mathbb{K})$
Creators: name: Escalier, Amandine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 20F65

description: A vertex-transitive graph $\mathcal{G}$ is called Local-to-Global rigid if there exists $R>0$ such that every other graph whose balls of radius $R$ are isometric to the balls of radius $R$ in $\mathcal{G}$ is covered by $\mathcal{G}$. An example of such a graph is given by the Bruhat-Tits building of $PSL_n(\mathbb{K})$ with $n\geq 4$ and $\mathbb{K}$ a non-Archimedean local field of characteristic zero.. In this paper we extend this rigidity property to a class of graphs quasi-isometric to the building including torsion-free lattices of $SL_n(\mathbb{K})$. The demonstration is the occasion to prove a result on the local structure of the building. We show that if we fix a $PSL_n(\mathbb{K})$-orbit in it, then a vertex is uniquely determined by the neighbouring vertices in this orbit.
description: 35 pages, 12 figures. (Changes in v3: typos corrected. .tex files now available. Published in Annales de l'institut Fourier.)
Manual de procedimientos para la adquisición y control de bienes (grupo de compras y contrataciones de la Universidad de Cartagena)
Creators: name: Hoyos Ho, Eder Omar
name: Palacio M., Eduardo Manuel
Publisher: name: Universidad de Cartagena
Year: 1995
Subjects: Manual de procedimientos
Manuales administrativos

description: Tesis (Economista).--Universidad de cartagena. faculta de Ciencias Económicas. Programa de Economía, 1995.
description: El presente estudio tiene por objeto elaborar un manual de procedimiento administrativo en la sección de adquisición y control de bienes, grupo de compras y contrataciones de la división financiera de la Universidad de Cartagena.
The reheating era leptogenesis in models with seesaw mechanism
Creators: name: Hamada, Yuta
name: Tsumura, Koji
name: Yasuhara, Daiki
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Observed baryon asymmetry can be achieved not only by the decay of right-handed neutrinos but also by the scattering processes in the reheating era. In the latter scenario, new physics in high energy scale does not need to be specified, but only two types of the higher dimensional operator of the standard model particles are assumed in the previous work. In this paper, we examine the origin of the higher dimensional operators assuming models with a certain seesaw mechanism at the high energy scale. The seesaw mechanism seems to be a simple realization of the reheating era leptogenesis because the lepton number violating interaction is included. We show that the effective interaction giving CP violating phases is provided in the several types of models and also the reheating era leptogenesis actually works in such models. Additionally, we discuss a possibility for lowering the reheating temperature in the radiative seesaw models, where the large Yukawa coupling is naturally realized.
description: 25 pages, 11 figures, published version
Prototype VOEvent Network Systems based on VTP and XMPP for the SVOM Chinese Science Center
Creators: name: Zhang, Mo
name: Huang, Maohai
name: Wu, Chao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the current progress of design and build of two prototype VOEvent network systems for the SVOM Chinese Science Center. One is based on VTP which is compatible with the global VOEvent network, the other is based on XMPP which enables cross-platform messaging and information sharing among human users. We also present a demonstration of VOEvent controlled follow-up observation, including triggering, observational data transferring, as well as other procedures.
description: 5 pages, 5 figures. This work was supported by National Natural Science Foundation of China (No.11603049). SpaceOps Conference (AIAA), Daejeon, Korea. Published in 2017
title: Accumulation of STIM1 is associated with the degenerative muscle fibre phenotype in ALS and other neurogenic atrophies
Creators: name: Jesse, Christopher Marvin
name: Goswami, Anand
name: Chandrasekar, Akila
name: Bushuven, Eva
name: Vollrath, Jan Tilmann
name: Dreser, Alice
name: Katona, Istvan
name: Beyer, Cordian
name: Johann, Sonja
name: Feller, Alfred C.
name: Grond, Martin
name: Wagner, S.
name: Nikolin, Stefan
name: Troost, Dirk
name: Weis, Joachim
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Questions: Upon denervation, skeletal muscle fibres initiate complex changes in gene expression. Many of these genes are involved in muscle fibre remodelling and atrophy. Amyotrophic lateral sclerosis (ALS) leads to progressive neurodegeneration and neurogenic muscular atrophy (NMA). Disturbed calcium[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
On path ranking in time-dependent graphs
Creators: name: Adamo, Tommaso
name: Ghiani, Gianpaolo
name: Guerriero, Emanuela
Publisher: name: arXiv
Year: 2020
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper we study a property of time-dependent graphs, dubbed path ranking invariance. Broadly speaking, a time-dependent graph is path ranking invariant if the ordering of its paths (w.r.t. travel time) is independent of the start time. In this paper we show that, if a graph is path ranking invariant, the solution of a large class of time-dependent vehicle routing problems can be obtained by solving suitably defined (and simpler) time-independent routing problems. We also show how this property can be checked by solving a linear program. If the check fails, the solution of the linear program can be used to determine a tight lower bound. In order to assess the value of these insights, the lower bounds have been embedded into an enumerative scheme. Computational results on the time-dependent versions of the \textit{Travelling Salesman Problem} and the \textit{Rural Postman Problem} show that the new findings allow to outperform state-of-the-art algorithms.
description: 28 pages, 2 figures
Type space functors and interpretations in positive logic
Creators: name: Kamsma, Mark
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic (math.LO)
subject: Category Theory (math.CT)
subject: FOS: Mathematics

description: We construct a 2-equivalence $\mathfrak{CohTheory}^\text{op} \simeq \mathfrak{TypeSpaceFunc}$. Here $\mathfrak{CohTheory}$ is the 2-category of positive theories and $\mathfrak{TypeSpaceFunc}$ is the 2-category of type space functors. We give a precise definition of interpretations for positive logic, which will be the 1-cells in $\mathfrak{CohTheory}$. The 2-cells are definable homomorphisms. The 2-equivalence restricts to a duality of categories, making precise the philosophy that a theory is `the same' as the collection of its type spaces (i.e. its type space functor). In characterising those functors that arise as type space functors, we find that they are specific instances of (coherent) hyperdoctrines. This connects two different schools of thought on the logical structure of a theory. The key ingredient, the Deligne completeness theorem, arises from topos theory, where positive theories have been studied under the name of coherent theories.
description: 23 pages
Smooth manifold structure for extreme channels
Creators: name: Iten, Raban
name: Colbeck, Roger
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum channel from a system $A$ of dimension $d_A$ to a system $B$ of dimension $d_B$ is a completely positive trace-preserving map from complex $d_A\times d_A$ to $d_B\times d_B$ matrices, and the set of all such maps with Kraus rank $r$ has the structure of a smooth manifold. We describe this set in two ways. First, as a quotient space of (a subset of) the $rd_B\times d_A$ dimensional Stiefel manifold. Secondly, as the set of all Choi-states of a fixed rank $r$. These two descriptions are topologically equivalent. This allows us to show that the set of all Choi-states corresponding to extreme channels from system $A$ to system $B$ of a fixed Kraus rank $r$ is a smooth submanifold of dimension $2rd_Ad_B-d_A^2-r^2$ of the set of all Choi-states of rank $r$. As an application, we derive a lower bound on the number of parameters required for a quantum circuit topology to be able to approximate all extreme channels from $A$ to $B$ arbitrarily well.
description: 9 pages, v2: a few minor corrections to match journal version
Effect of drought on safflower natural dyes and their biological activities
Creators: name: Salem, Nidhal
name: Msaada, Kamel
name: Dhifi, Wissal
name: Sriti, Jezia
name: Mejr, Houda
name: Limam, Ferid
name: Marzouk, Brahim
Publisher: name: Technische Universität Dortmund
Year: 2014
Subjects: subject: Carthamus tinctorius flower
subject: drought
subject: phenolic composition
subject: carotenoids
subject: anti oxidant activity
subject: antimicrobial activity
subject: 610

description: Drought is the main abiotic constraint that affects crop species behaviour regarding biochemical responses. The current study was conducted to examine the effect of water deficit on growth, phenolic and carotenoid contents as well as the antioxidant and antimicrobial activities of two Carthamus tinctorius varieties (Jawhara and 104) flowers. Hence, plants were treated with different levels of water deficit: control (100 %), moderate water deficit (50 %) and severe water deficit (25 %). Obtained results showed that plant growth was significantly (p < 0.05) reduced under 50 %. Drought increased flower phenolic acids contents especially gallic acid where they increased significantly (p < 0.05) by 2.73 fold (104) and by 2.87 fold (Jawhara) with respect to controls under 50 %. However, the amounts of this major compound were reduced at 25 % by 9.66 % (104) and 3.83 % (Jawhara). Similar to phenolic compounds, total carotenoid content was at its highest level especially for Jawhar a with an increase by 35.19 % at 50 %. On the other hands, C. tinctorius flowers extracts exhibited high antiradical activity as compared to BHT. A gradual increase by 35.29 % (Jawhara) and 33.33 % (104) especially under 25 % was observed. Moreover, under 50 %, the antimicrobial activity increased significantly (p < 0.05) by 30 % and 10.05 % against Aspergillus carbonarus and Pseudomonas aerogenosa, respectively. Taken together, our findings suggest that C. tinctorius could be a raw material for production of natural dyes under moderate salinity conditions.
description: EXCLI Journal ; Vol. 13, 2014
Moduli space of stationary vacuum black holes from integrability
Creators: name: Lucietti, James
name: Tomlinson, Fred
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the classification of asymptotically flat, stationary, vacuum black hole spacetimes in four and five dimensions, that admit one and two commuting axial Killing fields respectively. It is well known that the Einstein equations reduce to a harmonic map on the two-dimensional orbit space, which itself arises as the integrability condition for a linear system of spectral equations. We integrate the Belinski-Zakharov spectral equations along the boundary of the orbit space and use this to fully determine the metric and associated Ernst and twist potentials on the axes and horizons. This is sufficient to derive the moduli space of solutions that are free of conical singularities on the axes, for any given rod structure. As an illustration of this method we obtain constructive uniqueness proofs for the Kerr and Myers-Perry black holes and the known doubly spinning black rings.
description: 58 pages. v2: typos fixed, minor clarifications, to appear in Adv. Theor. Math. Phys
Combination of chemotherapy and hyperthermia using targeted nanoparticles
Creators: name: KAUR, ISHDEEP
Publisher: name: Monash University
Year: 2021
Subjects: Nanomedicine

description: This thesis examines the use of porous silicon nanoparticles for the targeted delivery of therapeutics against breast cancer. It demonstrates the efficiency of nanoparticle-based combination of chemotherapy and hyperthermia over single therapy. It also identifies changes at cellular levels which contribute to the enhanced therapeutic effect of the combined therapy.
Investigating factors regulating the expression and function of P-glycoprotein and breast cancer resistance protein at the blood-brain barrier
Creators: name: NEWMAN, STEPHANIE ALEXANDRA
Publisher: name: Monash University
Year: 2021
Subjects: Pharmaceutical sciences

description: P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP) are two protein ‘pumps’ situated at the cellular interface separating the brain from the general blood circulation. Whilst these proteins mainly serve to prevent accumulation of potential toxins and waste products in the brain, they greatly reduce the brain delivery of therapeutic drugs to treat brain diseases and are thought to mediate the transport of a toxic substance involved in Alzheimer’s disease. Therefore, this thesis investigated factors regulating the abundance and activity of P-gp and BCRP, which may have application for improving brain drug delivery or the treatment of Alzheimer’s disease.