770 research outputs found
Aspectos innovadores de realidad virtual y sensores cinéticos para una mejora significativa utilizando el algoritmo de Fireworks para un juego Wii de un deporte colaborativo para una sociedad en una Smart City
No full textCada cierto tiempo se publica un nuevo informe sobre la obesidad infantil. Los malos hábitos alimentarios y la vida cada vez más sedentaria de los niños en una sociedad fronteriza, ha provocado un aumento alarmante en los casos de niños con sobrepeso u obesos. Anteriormente, parecía un problema de países con hábitos alimentarios poco saludables, como los Estados Unidos o México en América Latina, donde la comida chatarra es parte de la dieta en la infancia. Sin embargo, la obesidad es un problema que ya tenemos a la vuelta de la esquina y que no es tan difícil combatir en los niños. En la presente investigación, el desarrollo de una aplicación que reduce el problema de la falta de movimiento en la infancia de una ciudad inteligente se considera un problema futuro, que es la principal contribución, junto con el logro de una forma innovadora de buscar un deporte olímpico sin la complejidad de trasladarse físicamente a un espacio con altos costos de mantenimiento y considerando las condiciones climáticas adversas
Psoriasis and cardiovascular risk: Immune-mediated crosstalk between metabolic, vascular and autoimmune inflammation
No full textIntroduction and background
In the last few years, a substantial body of evidence indicates that cutaneous psoriasis and psoriatic arthritis patients are at higher risk of developing cardiovascular disease. However, underlying mechanism remains not completely understood. In this review we discuss the role of the immune system in the development of atherosclerosis, focusing on available data implicating the role of an enhanced immune-mediated proinflammatory status in psoriasis and psoriatic arthritis diseases.
Methods
A systematic search was performed on Pubmed until November 2014, with preference to the sources published within the past 8 years, including epidemiological studies (prospective and retrospective); cross-sectional case–control studies and reviews. Articles were selected according critical associations using the following keywords: arthritis, immune-mediated inflammatory diseases, and psoriasis. These were combined with closely related keywords reflecting cardiovascular diseases: atherogenesis, endothelial dysfunction, intima media thickness, subclinical atherosclerosis, plaque, thrombosis, thrombus, fibrinolysis, coagulation, and reactive oxygen species. Both types of disease selected terms were separately combined with non-traditional (innate and adaptive pro and anti-inflammatory immune molecules and cells) and traditional (metabolic related conditions and molecules) cardiovascular risk factors.
Results and conclusions
Psoriasis and psoriatic arthritis diseases illustrate that immune-mediated activated crossroads of inflammation beyond enhanced cardiovascular risk factors are the result of an interplay between different proatherogenic mediators derived from metabolic, vascular and autoimmune joint and skin inflamed target tissue. Consistent with this point of view, psoriasis and psoriatic arthritis diseases offer an invaluable opportunity to reinforce our knowledge about atherosclerotic cardiovascular disease.Fil: Kolliker Frers, Rodolfo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas (i); Argentina. Gobierno de la Ciudad de Buenos Aires. Hospital Gral.de Agudos "ramos Mejia"; ArgentinaFil: Bisoendial, R. J.. University Of Amsterdam; Países BajosFil: Montoya, S. F.. Gobierno de la Ciudad de Buenos Aires. Hospital Gral.de Agudos "ramos Mejia"; ArgentinaFil: Kerzkerg, E.. Gobierno de la Ciudad de Buenos Aires. Hospital Gral.de Agudos "ramos Mejia"; ArgentinaFil: Castilla Lozano, Maria del Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas (i); ArgentinaFil: Tak, P. P.. University Of Amsterdam; Países BajosFil: Milei, Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas (i); ArgentinaFil: Capani, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas (i); Argentina. Universidad Arg."john F.kennedy"; Argentin
Agent based modeling of innovation diffusion in agricultural systems. Lake Como - Muzza district case study
No full textLAUREA MAGISTRALESi prevede che il riscaldamento globale come risultato di attività umane possa modificare la distribuzione spaziale e temporale di variabili idro-climatiche, come il flusso di corrente, temperatura e precipitazioni. Il settore agricolo, uno dei componenti vitali nella nostra società e fortemente dipendente dalle condizioni del clima, dovrà affrontare non solo condizioni meteorologiche estreme ma anche l'aumento globale della temperatura, che cambia i processi fenologici della coltura. Anche se l'impatto dei cambiamenti climatici sulle pratiche agricole può variare in base alle posizioni geografiche, è importante essere preparati e, in particolare, adeguarsi tempestivamente ai cambiamenti al fine di mitigare i potenziali effetti negativi di eventi estremi, come siccità o grandine. Un’alternativa per ridurre la vulnerabilità degli agricoltori alle condizioni variabili è quella di adottare nuove tecniche agricole. Ad esempio, l'introduzione di irrigazione controllata ha migliorato notevolmente la produzione delle colture in passato.
L'adozione di nuove tecniche tra agricoltori è un processo di diffusione dinamico, influenzato dalla eterogeneità dai caratteri endogeni dei contadini ma anche dalle condizioni esogene. In questo lavoro, ci focalizziamo sull'adozione dei contadini del nuovo sistema di irrigazione in base alle condizioni cambianti del ambiente. Abbiamo scelto, come area di studio pilota, il quartiere di Muzza in Italia, il quale ha vissuto degli eventi estremi negli ultimi decenni.
In particolare, abbiamo modellato il sistema agricolo Muzza come un CHNS (Coupled Human-Natural System) utilizzando l'approccio di ABM (Agent Based Modeling) in cui ogni associazione di irrigazione è modellata come un agente che fa delle scelte sui metodi di irrigazione ed esegue attività agricole sui terreni. Si introduce quindi Il modello comportamentale esplicito per descrivere le decisioni degli agricoltori. I parametri sono definiti sulla base di ricerche letterarie. In particolare, si introducono diversi atteggiamenti di rischio di agenti agricoli in base alla loro situazione finanziaria ed alla dimensione delle fattorie, così come l'interazione tra i diversi agenti in base al numero di utilizzatori che possono motivare il resto degli agricoltori che non li hanno ancora adottati. Il modello comportamentale esplicito costruito viene quindi inserito nel quadro di modellazione DistriLake per descrivere il quartiere di Muzza come CHNS.
È stata eseguita una simulazione di 50 anni con i parametri di progettazione e con un set di dati idro-climatico sintetizzato, per simulare il processo di diffusione ed inseguito è stata eseguita un’analisi di sensitività per giustificare l'impatto dei diversi parametri in base ai resultati della simulazione.
I risultati suggeriscono che l'adozione della nuova tecnologia di irrigazione è piuttosto veloce e saturata nel settimo anno. Gli agricoltori propensi al rischio sembrano essere i primi utilizzatori, e rappresentano la popolazione vitale che motiva il resto degli agricoltori, sia neutri al rischio che avversi al rischio, a seguire i loro passi. Nonostante la saturazione rapida della nuova diffusione della tecnologia, al quarto anno, rispetto all’anno precedente, si osserva un comportamento di retrocessione riguardo ai nuovi metodi di irrigazione. Questo comportamento potrebbe essere causato delle scarse risorse economiche di quell'anno e quindi riduce il numero di agricoltori propensi al rischio. Come previsto, gli agricoltori avversi al rischio sono gli ultimi ad adottare, ed aspettano fino a quando la maggior parte sia già dotata del nuovo metodo di irrigazione. L'analisi di sensibilità suggerisce che i parametri che si sono riferiti alla liquidità economica e la soglia di massa critica sono quelli più importanti e che influenzano il processo di diffusione. Tra i lavori futuri, è necessario convalidare i valori dei parametri in base all’indagine sul campo.The global warming as resulted from human activities is expected to alter the spatial and temporal distribution of hydro-climatic variables, such as stream flow, temperature and precipitation. Agricultural sector as one of the vital components in society, which strongly depends on the climate conditions, will be challenged by more extreme weather and by the overall increase of the temperature that changes the crop's phenological process. Although the impact of climate changes on agricultural practices may differ based on the geological locations, it is important to be prepared and make timely adaptation to the changing conditions to mitigate the potential negative impacts from extreme events, such as droughts or hail. One alternative to reduce farmers’ vulnerability to the changing conditions is by adopting new agricultural techniques, just like how introducing controlled irrigation greatly improved the crop production in the past. The adoption of new techniques among farmers is a dynamic diffusion process, influenced by the heterogeneity of farmers’ endogenous characters as well as the exogenous conditions. In this work, we are interested in the farmers' adoption of new irrigation system under the changing boundary conditions, and we chose Muzza district (in Italy) as a pilot study area, which has experienced several extreme events in recent decades.
We modeled the Muzza agricultural system as a Coupled Human Natural System (CHNS) using Agent Based Modeling (ABM) approach, in which each irrigation association is modeled as an agent who make choices on the irrigation methods and perform agricultural activities on the farmland. The explicit behavioral model for describing farmers' decisions is introduced, with parameters defined based on the literature review. Specifically, we introduce different risk attitudes of farmer agents based on their financial performance and the farm size, as well as the interaction among different agents based on the number of adopters that may motivate the rest of non-adopters. The constructed explicit behavioral model is then embedded into the DistriLake modeling framework for describing Muzza district as a CHNS.
A 50-year simulation with design parameters and synthesized hydro-climatic dataset was first performed to simulate the diffusion process, followed by the sensitivity analysis to justify the impact of different parameters on the simulation outputs.
Results suggest that the uptake of the new irrigation technology is rather fast and saturated in 7th year. Risk taking farmers appear to be the first adopters, and represent the vital population that motivates the rest risk neutral and risk averse farmers to follow their steps. Despite the fast saturation of the new technology uptake, it is observed a retreating behavioral from adopting new irrigation methods in 4th year compared with last year, which might be due to the poor economic performance that year and hence reduce the number of risk seeking farmers. As expected, risk averse farmers are the last adopters, who wait until the majority is equipped with the new irrigation method. Sensitivity analysis suggests that parameters that related to the financial liquidity and the threshold of critical mass are most important ones that impact the diffusion process. Future work is needed to validate the parameter values based on the field survey
Japanese immigration to Colombia: the quest for Eldorado?
No full textThis thesis is a cultural history of Japanese immigration to Colombia throughout the twentieth century. It looks at the circumstances under which Japanese migration was envisioned by Colombia and Japan and has three basic aims: first, to identify the expectations of Colombia regarding foreign immigration, and of the Japanese government in promoting emigration abroad; second, to explain the process of adaptation by the immigrants to the new social and physical environment, so different from their country of origin; and third, to discuss the significance of the 'U-turn nikkei’ labour migration to Japan. In this work, the activities of the emigration company Kaigai Kôgyô Kabushiki Gaisha are examined. This company, in association with the Overseas Cooperative of Fukuoka Prefecture, planned and conducted rural immigration to Colombia. In addition to a summary of the immigration legislation, an overview of all immigration plans is presented. Because of the role immigration played in shaping the relations between the two countries, early diplomatic and economic relationships are also considered. Special attention is given to the protection of the Panama Canal zone by the United States, a fact that deterred Japanese immigration to Colombia. This thesis has involved the examination of a diverse range of sources, dispersed in several archives and libraries in Colombia, England, Japan, and the United States. Bibliographical research was combined with fieldwork, carried out among the Japanese immigrants and their descendants in Colombia as well as Japan. This work hopes to contribute to a better understanding of Japanese emigration abroad, adding a new perspective to the study of international immigration to Colombia
Prevalencia de lesiones de desgaste en superficies dentales de pacientes atendidos en las Clínicas Odontológicas de la USTA en el 2019.
No full textIntroducción: El desgaste dental se caracteriza por la pérdida gradual de la primera capa del diente, donde el esmalte tiene como función proteger y recubrir las piezas dentales. Sin embargo, estas afecciones generalmente se presentan como una combinación entre erosión, abfracción abrasión, y desgaste, cada una de ellas tienen unas características específicas que pueden guiar a su diagnóstico. Objetivo: Determinar la prevalencia de lesiones que involucran desgaste dental en piezas dentales de los pacientes que asisten a las clínicas odontológicas de la Universidad Santo Tomás. Materiales y métodos: Se realizó un estudio observacional descriptivo de corte transversal, donde se evaluó un promedio de 1127 superficies dentales de pacientes que asistieron a las clínicas de la universidad por mediante el índice de BEWE. Se realizó cálculo de prevalencia, análisis univariado y bivariado. Resultados: Los pacientes tenían un promedio de edad de 33.2 años, la mayoría pertenecía al sexo femenino y un nivel socioeconómico estrato 3. Se encontró que un 44% presentaban un nivel de desgaste medio, y en los demás pacientes se pudo encontrar niveles de desgaste en igual proporción, es decir un nivel bajo de 28% y nivel alto de un 28%. Además, se encontró asociaciones estadísticamente significativas con las variables sexo, edad, nivel socioeconómico y el tipo de cerdas del cepillo de dientes (p<0.05). Conclusiones: se determinó que la mayoría de los pacientes tenían un nivel de desgaste medio, las mujeres presentaron un mayor índice de desgaste que los hombres, presentaron un nivel de desgaste alto las personas mayores de 41 años y que pertenecían a los estratos 1 y 3. Se encontró que las personas que utilizan cepillos dentales de cerdas duras, presentan un nivel de desgaste mayor. Con respecto a la variable enfermedades sistémicas no se logró establecer una correlación entre esta y el desgaste debido a que la totalidad de los pacientes refirieron no padecer de ninguna condición sistémica.Introduction: Dental wear is characterized by the gradual loss of the first layer of the tooth, where enamel has the function of protecting and coating dental parts. However, these conditions usually present as a combination of erosion, abrasion and wear, each of which has specific characteristics that can guide your diagnosis. Objective: To determine the prevalence of lesions involving dental wear on dental parts of patients attending the dental clinics of the Universidad Santo Tomás. Materials and methods: A descriptive cross-sectional observational study was conducted, evaluating an average of 1127 dental surfaces of patients who attended university clinics through the BEWE index. Prevalence calculation, univariate and bivariate analysis were performed. Results: Patients had an average age of 33.2 years, most of them belonged to the female sex and a stratum 3 socioeconomic level. 44% were found to have an average level of wear, and in other patients wear levels could be found in equal proportion, i.e. a low level of 28% and a high level of 28%. In addition, statistically significant associations were found with the gender, age, socioeconomic level and type of toothbrush bristles (p<0.05). Conclusions: It was determined that most patients had a medium level of wear, women had a higher rate of wear and tear than men, had a high level of wear, people over 41 years of age and who belonged to strata 1 and 3. People who use hard bristle toothbrushes were found to have a higher level of wear. With regard to the variable systemic diseases, no correlation was possible between the variable diseases and the wear and tear because all patients reported not suffering from any systemic conditionsOdontólogohttps://www.ustabuca.edu.co/Pregrad
O principio da adequação social na estrutura juridica do crime
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina. Centro de Ciencias JuridicasO princípio da adequação social ou da conduta socialmente adequada é o tema desta dissertação. A partir da idéia de que o delito nada mais deva representar que a tipificação de uma norma já censurada pelo corpo social, a ação socialmente adequada permite ao intérprete da lei determinar a inexistência de recriminação jurídico-penal, ainda que ocorra a correspondência entre a norma abstrata e o fato praticado. Na condição de elemento auxiliar de valorização o tema é tratado inicialmente na tipicidade, no âmbito da qual, também, variantes são analisadas. Considerando a diversidade de opiniões quanto à localização dos princípios na estrutura jurídica do crime, estudou-se, a sua influência, no âmbito da antijuridicidade, como causa supralegal. Embora a adequação social esteja inserida essencialmente na questão delituosa, evidenciou-se igualmente as implicações doutrinárias decorrentes da sua aceitação na valoração dos fatos contravencionais. Com a finalidade de propiciar um melhor entendimento, foram citados casos, com jurisprudência que traduz o pensamento dos tribunais acerca do tema, quer nos delitos, quer nas contravenções. No último capítulo esboçou-se o pensamento crítico sobre o Direito Penal e, em particular, aquele que prescreve a necessidade de discriminalização de condutas já incluídas nas normas de cultura e, portanto, socialmente adequadas
Estudio de los elementos históricos que subyacen a las prácticas contables
No full textCD-T 657 H581; 148 pEste ejercicio académico se sustenta en la revisión de la literatura de documentos convertidos en registros históricos relevantes de Federico Gertz Manero, Richard Mattessich, Juan Pablo Valenzuela Barros, Ramón Ramos Arriaga, Jesús Suarez Pineda entre otros, así como en la normatividad que para el caso Colombiano ha regulado su actuar y su ejercicio desde la época precolombina hasta la actualidad.Universidad Libre Seccional Pereir
Optimized Dual-Stokes Raman Laser for 1.1 µm Emission and Temperature Sensing
No full textThis work experimentally validates an improved Raman fiber laser, developed through cascade core variation splicing of optical fibers and the integration of fiber Bragg gratings. A continuous-wave Yb-doped fiber laser was used as the pump source, delivering up to 10 W at 1064 nm. The first Stokes emission generates laser output centered at 1119 nm, while the second Stokes emission produces a lasing mode at 1179 nm. Fiber Bragg gratings control these emissions. Furthermore, both Stokes laser emissions can be tuned by applying temperature changes, achieving a 15.07 pm/°C sensitivity. The proposed laser presents a compact and practical solution for remote temperature sensing applications using fiber lasers
Propuesta de estrategia para el clima organizacional de la entidad TUYA S.A. (Catt) Fontibón
No full textLa investigación se fundamentó en identificar las diferentes falencias que se
presentaban en el clima organizacional de la entidad Tuya S.A. Catt Fontibón, la
cual es conformada actualmente por 12 colaboradores que participaron en la
realización de la aplicación de los instrumentos IMCOC y ECO, una vez
adaptados a las necesidades que se presentaban actualmente en la entidad y al ser
comparados los resultados demuestran que la variable que tiene mayor impacto
son las relaciones interpersonales seguida de la objetividad, por tal razón se
propone utilizar como alternativa de solución la herramienta coaching y teoría z
para corregir las problemáticas encontradas de esta manera se concluye que existe
una debilidad en el grupo de trabajo, afectando así la competitividad,
productividad y clima organizacional.Marco teórico. -- Diseño metodológico. -- Metodología utilizada para la tabulación y presentación de los resultados. -- Conclusiones.PregradoAdministrador(a) de EmpresasInnovación y desarrollo organizaciona
Erratum to: Measurement of the top quark mass with lepton+jets final states using pp collisions at
No full textIn this article the author name Luigi Calligaris was incorrectly written as A. Calligaris. The original article has been corrected
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