368 research outputs found
Realidad aumentada en dispositivos iOS como sistema de ayuda a los alumnos
Este Proyecto consiste en la realización de! una aplicación destinada a los alumnos de la Universidad para obtener ayuda e información del Campus Universitario. La aplicación se ejecuta en dispositivos móviles iOS: iPhone, iPad e iPod Touch y emplea tecnologías de Realidad Aumentada proporcionadas por el SDK Vuforia de Qualcomm. Esta aplicación servirá como nexo de unión entre soportes, a priori incompatibles, como una simple hoja de papel impresa y el propio dispositivo electrónico haciendo uso de Realidad Aumentada; que proporcionará al soporte impreso de contenidos multimedia e interacción a través de la pantalla del dispositivo móvil. Para llevar cabo este Proyecto se estudian las diferentes herramientas que se necesitan para poder desarrollar una aplicación para la plataforma de Apple, así como adquirir los conocimientos teóricos necesarios a tal efecto. Además se hace un estudio sobre cuál es el estado actual de la Realidad Aumentada y de las herramientas capaces de proporcionarla. Se utilizará una de estas tecnologías,Vuforia, para dotar a la aplicación a desarrollar de capacidades de Realidad Aumentada y se explica con detalle cómo es el funcionamiento y arquitectura de esta tecnología. Se estudiarán técnicas de modelado en tres dimensiones para incorporar Realidades Virtuales propias a la aplicación a desarrollar y se expone con detalle cómo ha sido el proceso de desarrollo de la aplicación, así como su funcionamiento. ___________________________________________________________________________________________________________________________________This Project consists in the realization of an application for students of the University to get help and information from the University Campus. The application runs on iOS mobile devices: iPhone, iPad and iPod Touch and employs Augmented Reality technologies provided by Qualcomm Vuforia SDK. This application will serve as a link between supports, at first sight incompatible, as a single printed sheet of paper and the electronic device itself using Augmented Reality, which provide the printed support interaction and multimedia content through the mobile device screen. To carry out this Project different tools needed to develop an application for the Apple platform will be studied and the knowledge necessary for this purpose will be acquired. It also makes a study about the current state of Augmented Reality and tools capable of providing it. One of these technologies will be used, Vuforia, to provide Augmented Reality capabilities to the application and explains in detail how is the operation and architecture of this technology. Three dimensions modeling techniques will be studied to incorpórate specific virtual realities to the application to develop and set out in detail how was the process of the application development and operation.Ingeniería de Sistemas Audiovisuale
Experimenting with electromagnetism using augmented reality: Impact on flow student experience and educational effectiveness
Educational researchers have recognized Augmented Reality (AR) as a technology with great potential to impact affective and cognitive learning outcomes. However, very little work has been carried out to substantiate these claims. The purpose of this study was to assess to which extent an AR learning application affects learners' level of enjoyment and learning effectiveness. The study followed an experimental/control group design using the type of the application (AR-based, web-based) as independent variable. 64 high school students were randomly assigned to the experimental or control group to learn the basic principles of electromagnetism. The participants' knowledge acquisition was evaluated by comparing pre- and post-tests. The participants' level overall-state perception on flow was measured with the Flow State Scale and their flow states were monitored throughout the learning activity. Finally, participants' perceptions of benefits and difficulties of using the augmented reality application in this study were qualitatively identified. The results showed that the augmented reality approach was more effective in promoting students' knowledge of electromagnetic concepts and phenomena. The analysis also indicated that the augmented reality application led participants to reach higher flow experience levels than those achieved by users of the web-based application. However, not all the factors seem to have influence on learners' flow state, this study found that they were limited to: concentration, distorted sense of time, sense of control, clearer direct feedback, and autotelic experience. A deeper analysis of the flow process showed that neither of the groups reported being in flow in those tasks that were very easy or too difficult. However, for those tasks that were not perceived as difficult and included visualization clues, the experimental group showed higher levels of flow that the control group. The study suggests that augmented reality can be exploited as an effective learning environment for learning the basic principles of electromagnetism at high school provided that learning designers strike a careful balance between AR support and task difficulty.This research has been partially supported by the Spanish project EEE (TIN2011-28308-C03-01, Plan Nacional de I+D+i, Ministerio de Economía y Competitividad) and the eMadrid network (S2009/TIC-1650, Comunidad de Madrid).Publicad
Randomised trial of once-daily vilanterol in children with asthma on inhaled corticosteroid therapy
GSK (ClinicalTrials.gov identifier NCT01573767
An Overarching Defense of Kant\u27s Idea of the Highest Good
The main goal of this dissertation is to develop an overarching defense of Kant\u27s idea of the highest good, against the criticisms pointed out in the English-speaking world, within the framework of the so-called Beck-Silber controversy.
As it is known, since the second half of the last century, when the Beck-Silber controversy started, Kant\u27s idea of the highest good has been subject to a massive attack. These attacks motivated, in turn, the emergence of a counterforce of defenders, a group that I attempt to join through this work. Particularly, I have identified six criticisms against Kant\u27s idea of the highest good, which I have labeled as the problems of heteronomy, unsuitability, impossibility, injustice, irrelevance, and abandonment. Thanks to this, we know what a complete defense of Kant\u27s idea of the highest good requires. Now, once with all these criticisms identified, I develop a response to each of them. In that way, I show how Kant\u27s idea of the highest good does not undermines the principle of autonomy; how the highest good has not only a place, but a privileged one in his moral philosophy; how it is possible to promote a world in which happiness is distributed in accordance to virtue; how the problem of injustice is both ungrounded and overestimated; how the highest good is actually relevant for morality; and finally, that Kant did not abandoned his idea of the highest good at the end of his life. In this way, I hope having saved the highest good as part of Kant\u27s ethics
The use of prone positioning in acute respiratory distress syndrome: An evidence based review
Session presented on Friday, September 26, 2014:
Purpose: The purpose of this poster is to review current evidence on the effects of prone positioning on 30-day survival of patients with acute respiratory distress syndrome (ARDS). ARDS is a form of acute lung injury (AKI) characterized by non-cardiogenic pulmonary edema resulting in stiff, non-compliant alveoli and impaired gas exchange from either direct or indirect lung injury. Research estimates that 20 to 75 per every 100,000 persons each year are affected by acute lung injury (ALI) such as ARDS. ARDS can have mortality rates as high as 90%. This complex condition is further associated with high rates of morbidity and increased healthcare costs. No current standardized treatment guidelines exist for ARDS. Treatment may involve intubation, mechanical ventilation using low tidal volumes and increased peak end-expiratory pressure (PEEP), fluid management, systemic support, pharmacological intervention, kinetic therapy, and most notably prone positioning. Therapeutically placing patients with ARDS in the prone position was first proposed by Douglas, et al. in 1977. Prone positioning is believed to exert its effect by utilizing gravity and the weight of the lung itself, which is 2-3 times greater in patients with ARDS, to increase elasticity of the chest, shift pressure from the heart to the lungs, and alter distribution of alveolar inflation and make use of the greater number of alveoli in dorsal lung regions.
Methods: A search of MEDLINE and the Cumulative Index to Nursing and Allied Health was conducted utilizing the following search strategies: (prone OR prone positioning) AND (ARDS OR respiratory distress) AND (mortality OR survival). Obtained articles were limited to those sources published within the last five years, peer-reviewed, written in English, and that excluded those that addressed ARDS in a single patient population (i.e. secondary to burns, trauma, etc.). The search yielded seven studies and one expert opinion. The sources were then reviewed by the author and data including: the title, author(s), year of publication, the study design, the number of participants, the mortality rates, factors directly impacting mortality rates, and the occurrence of complications was compiled into a table (Appendix, Table 1). Each source was then evaluated for their strength as evidence using the Rating System for the Hierarchy of Evidence for Intervention/Treatment Questions.
Current Evidence: A review of current evidence reveals that overall prone positioning does not improve 30-day mortality in any statically significant way; however, all-cause mortality is approximately 10% lower in patients with the most severe cases of ARDS who are proned. Severe cases of ARDS may be defined as those with a baseline PaO2/FiO2 less than 100 mmHg. Strong evidence also suggests prone positioning in severe cases may reduce incidences of ventilator-induced lung injury (VILI) and ventilator acquired pneumonia (VAP) which could greatly impact mortality and morbidity. Evidence reveals as with any treatment prone positioning holds risks that must be weighed against potential benefits. Risks include dislodgement of tubes and equipment (i.e. chest tubes, ventilator tubing, and central and arterial lines), new or worsening pressure ulcers, airway infection, obstruction of endotracheal tube, and need for further sedation or muscle paralysis; however, evidence is inconsistent as to what rate these risks may occur. Evidence does indicate that fewer adverse effects are likely to occur in ICUs where prone positioning has been implemented and where staff is familiar with equipment. A final factor that may impact mortality is evidence suggesting that prone positioning is not being implemented soon enough for patients with ARDS and cites several obstacles including: late recognition and diagnosis, discrepancy over the effectiveness of prone positioning among healthcare providers (HCP), and failure of nursing staff to recommend prone positioning due to perceived difficult and risk or insufficient knowledge.
Recommendations: First, overcome obstacles that prevent implementing prone positioning for patients with serve ARDS, including: forming a consensus among healthcare providers on a more standardized treatment plan for ARDS that utilities the latest and ongoing research and educating HCP and nurses to promote early recognition of ARDS and clear misconceptions about prone positioning. Second, implement prone positioning only for the most severe cases of ARDS (baseline PaO2/FiO2 less than 100 mmHg) and ensure care is provided by a well-equipped healthcare team including trained and experienced ICU staff. Third, continue to further research interventions for ARDS including prone positioning and factors related to prone positioning, such as potential risk and benefits
Microfinance and Home Improvement: Using Retrospective Panel Data to Measure Program Effects on Fundamental Events
Rigorously estimating the effects of development programs is notoriously difficult. In this paper we present a methodology that borrows from event studies commonly used in the finance literature to ascertain the impacts of corporate mergers. In our RETRAFECT methodology a retrospective panel data set is created based on “fundamental” events in the history of surveyed households, events that are discrete, unforgettable, and important to welfare. Based on the relationship between the changes in the estimated probabilities of these events and the timing of the introduction and uptake of a treatment, it is possible to ascertain if the probability of these fundamental events changes significantly after treatment. Our paper presents a series of tests, diagnostics, and corrections to account for potential supply-side and demand-side endogeneity problems in program rollout and adoption, and we caution against causal inference in many types of programs unless specific conditions are satisfied. Our application of the methodology examines housing improvements and purchases of large consumer durables among 1,672 households who gained access to microfinance at different times in Guatemala, India, and Ghana. We carry out estimations using village and country/year-level fixed effects to analyze the timing of these fundamental events relative to the timing of microfinance access and treatment. In our estimations, we find that the probability of a major housing improvement almost doubles from 0.038 to 0.070 in the years subsequent to a household\u27s first microfinance loan, and that the probability of purchasing certain consumer durables increases modestly
Incidence of respiratory viruses in peruvian children with acute respiratory infections
Acute respiratory infections are responsible for high morbi-mortality in Peruvian children. However, the etiological agents are poorly identified. This study, conducted during the pandemic outbreak of H1N1 influenza in 2009, aims to determine the main etiological agents responsible for acute respiratory infections in children from Lima, Peru. Nasopharyngeal swabs collected from 717 children with acute respiratory infections between January 2009 and December 2010 were analyzed by multiplex RT-PCR for 13 respiratory viruses: influenza A, B, and C virus; parainfluenza virus (PIV) 1, 2, 3, and 4; and human respiratory syncytial virus (RSV) A and B, among others. Samples were also tested with direct fluorescent-antibodies (DFA) for six respiratory viruses. RT-PCR and DFA detected respiratory viruses in 240 (33.5%) and 85 (11.9%) cases, respectively. The most common etiological agents were RSV-A (15.3%), followed by influenza A (4.6%), PIV-1 (3.6%), and PIV-2 (1.8%). The viruses identified by DFA corresponded to RSV (5.9%) and influenza A (1.8%). Therefore, respiratory syncytial viruses (RSV) were found to be the most common etiology of acute respiratory infections. The authors suggest that active surveillance be conducted to identify the causative agents and improve clinical management, especially in the context of possible circulation of pandemic viruses. J. Med. Virol. 87:917-924, 2015. (c) 2015 Wiley Periodicals, Inc.Peer ReviewedPostprint (author's final draft
Informe jurídico sobre el expediente N° 02073-2016-0-1601-JR-LA-06
En el presente informe jurídico, se analiza el proceso judicial iniciado por la persona
R.E.B.C. (en adelante, el “demandante”), en contra de su ex empleador A.L. S.A.A. (en
adelante, “la demandada” o “el empleador”) mediante el cual solicitó, principalmente, la
reposición en el puesto que venía ocupando, al supuestamente haber sido víctima de un
despido nulo. Al respecto, el demandante argumenta que la demandada le cursó una carta de despido por abandono de trabajo, sin embargo, en realidad sus faltas de más de tres días
consecutivos al centro laboral se encontraban justificadas en el ejercicio del derecho de
huelga. Por su parte, la demandada sustenta su defensa en que en este caso no existió
el ejercicio legítimo del derecho de huelga, siendo que el demandante no cumplió con
agotar previamente la negociación directa, y porque las paralizaciones intempestivas de
labores se encuentran proscritas por ley, con lo cual, el despido aplicado fue válido.
En ese sentido, en las siguientes páginas se expondrán los principales problemas
jurídicamente relevantes identificados y los motivos de su importancia, así como se
realizará el desarrollo de los diversos actos procesales y sentencias emitidas; junto con
el análisis y las conclusiones del bachiller
Estudio y desarrollo de las habilidades sociales de los adolescentes del cuarto grado de educación secundaria del colegio Roosevelt - Lima 2017
Tesis para optar el título de Licenciado en EducaciónLos objetivos de este trabajo son:
En primer lugar, realizar una investigación para detectar las deficiencias en
habilidades sociales en adolescentes escolares,
En segundo lugar, desarrollar un programa de interacción grupal, ajustado a las
necesidades detectadas, para formar mejores personas.
Para este fin, se ha empleado una metodología mixta, utilizando dos
instrumentos en la recogida de información: uno de carácter cuantitativo y otro
de tipo cualitativo. La muestra está constituida por 32 alumnos con edades
comprendidas entre los 14 y 16 años, pertenecientes al colegio Franklin Delano
Roosevelt, situado en Lima.Tesí
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