118 research outputs found
Aplicación de las técnicas externas e internas del Merchandising en la empresa Llamadas Heladas, Matagalpa segundo Semestre 2012
Para que las empresas del sector servicio puedan lograr sus objetivos de aumentar la rentabilidad, estas deben de integrar y poner en práctica las técnicas externas e internas del Merchandising. El tema general del trabajo investigativo, radica en la aplicación del Merchandising en el sector servicio, Matagalpa 2012. Del tema general se desglosa como sub-tema: la aplicación de las técnicas externas e internas del Merchandising en la empresa llamadas heladas, Matagalpa segundo semestre 2012.
En la actualidad se vuelve indispensable la aplicación de las técnicas del Merchandising para las empresas tanto de bienes como de servicios ya que es una estrategia moderna abriendo pasos para la actualización de mercados modernos y competitivos en el país.
Con el presente estudio se pretende evaluar la aplicación de las técnicas externas e internas del Merchandising, identificando las dificultades presentes en el proceso de aplicación de dichas técnicas, las cuales darán pauta a las posibles soluciones propuestas que permitan mejorar el proceso de aplicación antes expuesto, obteniendo así beneficios enriquecedores para la empresa .
En la presente investigación se aborda como variable de estudio el Merchandising y como sub variables tenemos las técnicas externas e internas del Merchandising, así como información de conceptos básicos, importancia, funciones, ventajas y desventajas del Merchandising, así también información del punto de venta de llamadas heladas, la cual se obtuvo a través de guías de encuestas, entrevista, observación directa y revisión bibliográfica la cual sirvió para analizar las alternativas de solución y repuesta a la problemátic
ANÁLISIS DE LAS METODOLOGIAS DELTA-NORMAL Y MONTECARLO PARA ESTIMAR EL VALOR EN RIESGO (VaR)
El trabajo elaborado y los resultados obtenidos se agrupan en cuatro capítulos. El primer capítulo pretende ponernos en contexto proporcionando una visión general sobre el Sistema Financiero Mexicano, su composición, funcionamiento y regulación actual. Se aborda también la clasificación de Mercados Financieros, haciendo especial hincapié en el Mercado de Capitales y en los instrumentos que se manejan dentro del mismo, punto que da pie al segundo capítulo de esta tesis.
El Capítulo 2 se enfoca en desglosar los conceptos de riesgo y riesgo financiero, se explica la importancia de su cuantificación junto con algunas definiciones que nos permiten entender el tema de una mejor manera. Se desarrolla brevemente el Modelo de Markowitz y el Método del Modelo de Precios de Títulos Financieros o Capital Asset Princing Model (CAPM) que dan sentido a la construcción del portafolio con el cual se trabajó. Así mismo se exponen los fundamentos teóricos y supuestos del Valor en Riesgo (VaR) y de los dos métodos de valuación cuya eficacia pretendemos comparar.
A lo largo del tercer capítulo se describe la construcción del portafolio utilizado en base a los modelos descritos en la sección anterior y se presenta paso por paso el cálculo del VaR a través de los dos modelos sugeridos, de esta forma se exponen los resultados de cada practica y la comparación entre ellos.
Finalmente, la última parte se conforma de las conclusiones y hallazgos obtenidos del trabajo de investigación y de la comprobación de la hipótesis plateada en un principio
Challenges to implementing cyclist counting systems on rural roads
In Spain, the presence of sport and recreational cyclists on rural roads has increased notably in recent years. In fact, the number offederation licences reached 75,638 cyclists and 3,634 cycling clubs in 2020. As the number of cyclists on these roads has increased, so has the number of accidents. Despite regulations, information campaigns and measures t.aken by the Spanish Directorate-General for Traffic in recent years, the number of crashes involving cyclists in rural environments remains plateaued at near 50 cyclist fatalities per year. Most Spanish rural roads do not have specifi.c infrastructure for cyclists - e.g. cycle lanes. Theo. cyclists and drivers share the road and interact; being the overtaking manoeuvre one of the most dangerous interactions. These interactions imply risk of rear-end and side-on collisions with cyclists and head-on collisions with oncoming vehicles during the overtaking manoeuvre. Since traffic crashes and risk exposure are highly correlated, every interaction between cyclists and/or with motorised vehicles increases the likelihood of a traffic crash. Consequently, to properly assess road safety on rural roads, an adequate estimation of cycle
volume is needed. On the other band, cyclists may ride in groups in different confi.gurations (in-line or two-abreast), which can also affect the traftic operation by creating queues and increasing the delay time of m.otorised vehicles. Therefore, determining the volume of cyclists on a rural road segment is a necessary challenge in order to integrate them into safety and traffic operation analyses. Cycle volume is of great interest for many applications. In fact, knowing the spatial and temporal distribution of cycle volume across a road network. can help engineers to plan and manage these roads, improving road safety and traffic operation. Furthermore, knowing cycle volume can also help motorised drivers. Waming drivers about the presence of cycl:ists before reaching them improves road safety, as drivers can adapt their behaviour to interact with cyclists more safely. One tool to inform drivers of the presence of cyclists in this environment is the use of vertical signs. These systems have evolved in recent years, from simple static signs (infomring ofthe possible presence of cyclists), to the implementation of active and intelligent signs. Active or dyn.amic signs alert drivers about
the presence of cyclists in real time, raising their level of attention. This is extremely important, since driver inattention or speeding was present in half of crashes involving cyclists on Spanish rural roads.
There are many technologies for cyclist detection. Most of them have been used in urban areas, where cyclists have specific facilities. However, rural roads present particu1arities duc to the type of infrastructure, users, and how they interact. For this reason, the main objective of this study is to analyse what challenges existing counting systems must overcome in order to be effective on rural environment. The analysis will consider the particular characteristics of the phenomenon tobe detected, both the characteristics ofthe cyclists themselves and of the road
Ground Truth Spanish Automatic Extractive Text Summarization Bounds
The textual information has accelerated growth in the most spoken languages by native Internet users, such as Chinese, Spanish, English, Arabic, Hindi, Portuguese, Bengali, Russian, among others. It is necessary to innovate the methods of Automatic Text Summarization (ATS) that can extract essential information without reading the entire text. The most competent methods are Extractive ATS (EATS) that extract essential parts of the document (sentences, phrases, or paragraphs) to compose a summary. During the last 60 years of research of EATS, the creation of standard corpus with human-generated summaries and evaluation methods which are highly correlated with human judgments help to increase the number of new state-of-the-art methods. However, these methods are mainly supported for the English language, leaving aside other equally important languages such as Spanish, which is the second most spoken language by natives and the third most used on the Internet. A standard corpus for Spanish EATS (SAETS) is created to evaluate the state-of-the-art methods and systems for the Spanish language. The main contribution consists of a proposal for configuration and evaluation of 5 state-ofthe-art methods, five systems and four heuristics using three evaluation methods (ROUGE, ROUGE-C, and Jensen-Shannon divergence). It is the first time that Jensen-Shannon divergence is used to evaluate AETS. In this paper the ground truth bounds for the Spanish language are presented, which are the heuristics baseline:first, baseline:random, topline and concordance. In addition, the ranking of 30 evaluation tests of the state-of-the-art methods and systems is calculated that forms a benchmark for SAETS
Impact of migration on the occurrence of new cases of Chagas disease in Buenos Aires city, Argentina
Chagas disease, also known as American Trypanosomiasis, is endemic in the Americas, especially Central and South America. Chagas disease is a zoonotic disease caused by the parasite Trypanosoma cruzi. Most of the infections take place in children by vector or congenital transmission, with other modes of infection such as blood transfusion, organ transplants, and oral route being less frequent. In areas under vectorial control, congenital transmission is the most common way of accruing the diseaseFil: Moscatelli, Guillermo. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Garcia Bournissen, Facundo. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Freillij, Hector. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Berenstein, Ada. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Tarlovsky, Ana. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Moroni, Samanta. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Ballering, Griselda. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Biancardi, Miguel Angel. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Siniawski, Susana. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Schwarcz, Marta. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Hernandez, Susana. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Espejo Cozzi, Andres. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; ArgentinaFil: Altcheh, Jaime Marcelo. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños "Ricardo Gutiérrez"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Mejora del proceso de transporte basado en la metodología lean para reducir los impactos ambientales en una mina ubicada en Pataz 2021
Las pequeñas y medianas empresas mineras que buscan mitigar la contaminación
ambiental, también buscando optimizar sus procesos, vienen creciendo en número en las
últimas décadas. Sabiendo que hoy en día se está dando más importancia a los impactos
ambientales, es necesario implementar medidas para la reducción de estos, que a su vez
optimice los proceso que generan más sobre costo en las empresas del sector minero.
Considerando lo descrito, el presente trabajo buscó dar solución a las posibles
ineficiencias del proceso de transporte de los minerales en una empresa minera ubicada
en el Departamento de La Libertad, provincia de Pataz, causados por eventos específicos
que afectan las metas y los objetivos específicos de la empresa. Por ello, se implementó
un sistema de mejora de procesos con la ayuda de la metodología Lean, siendo la finalidad
mejorar sus operaciones y que al mismo tiempo se compruebe la reducción de polución
al medio ambiente.
Se obtuvieron los parámetros necesarios para estudiar el tiempo de transporte de
minerales y desmonte de distintas áreas a sus centros de destino, así mismo las toneladas
transportadas, y los recursos utilizados para estos procesos. Se propuso una mejora con
el uso de la herramienta de telemetría, y con métodos Lean para mejorar el tiempo de
ciclo y los recursos utilizados. Así mismo, se pudo realizar una comparación del sistema
actual con el sistema mejorado gracias a los recursos propuestos. Adicionalmente, la
simulación del proceso analizado, mediante el software Promodel, refuerza lo antes
expuesto para presentar un escenario mejorado
Optical Characterization of a Single Quantum Emitter Based on Vanadium Phthalocyanine Molecules
Single quantum emitters play a fundamental role in the development of quantum
technologies such as quantum repeaters, and quantum information processing.
Isolating individual molecules with stable optical emission is an essential
step for these applications, specially for those molecules that present large
coherence times at room temperature. Among them, vanadium-oxide phthalocyanine
(VOPc) molecules stand out as promising candidates due to their large coherence
times measured in ensemble. However, the optical properties of individual
molecules have not yet been reported. Here we show that single VOPc molecules
with stable optical properties at room temperature can be isolated. We find
that the optical response of the molecule under laser illumination of different
polarization agrees well with a system having pyramidal C symmetry.
Furthermore, the molecule reveals a non-radiative transition rate that depends
on the excitation wavelength when its lifetime is interrogated. We provide
theoretical calculations that support our experimental findings and provide
insight to the role of phonons and internal electronic structure of the
molecule. These results demonstrate that this single paramagnetic molecule can
function as a single quantum emitter while displaying optical stability under
ambient conditions to have their intrinsic properties investigated
Fostering Resilience in Adolescents at Risk: Study protocol for a cluster randomized controlled trial within the resilience school-based intervention
Adolescents; Resilience, Psychological; Mental health educationAdolescentes; Resiliencia Psicológica; Educación en salud mentalAdolescents; Resiliència Psicològica; Educació en salut mentalIntroduction: Resilience is considered of high relevance when developing interventions to cope with stressful situations. Schools are one of the key settings to promote resilience among adolescents. The purpose of this cluster randomized controlled trial is to assess the effectiveness of an intervention in adolescents at risk, aged 12-to-15 years old, to increase resilience and emotional regulation strategies.
Methods: The recruitment period started in January 2022. Schools will be randomly allocated to control and intervention groups by an external researcher using computer-generated random numbers. The minimum sample size was estimated to be 70 participants per group. Primary health care nurses will carry out the intervention during the school period (January to June 2022). Students will follow a specific training consisting of six 55-min sessions, for 6 weeks. Each session will consist of 5 min of mindfulness, followed by 45 min of the corresponding activity: introducing resilience, self-esteem, emotional regulation strategies, social skills, problem-solving, community resources, social and peer support, and 5 min to explain the activity to do at home. Data will be collected at baseline, 6 weeks, and 24 weeks after the intervention. The child youth resilience measure-32 (CYRM-32) scale will be used to assess the effectiveness of the intervention. This study received a grant in June 2021.
Discussion: The intervention is intended to improve mental health through resilience. Different factors related to resilience will be promoted, such as self-esteem, emotional regulation, social and communication skills, problem-solving and peer support, among others. As it has been designed as a cluster-randomized school-based intervention, we will directly ameliorate the participation and engagement of the target population. With the present intervention, we expect to improve coping skills in adolescents by enhancing resilience capacities
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