Conceptual logic modeling of a Technological system of touristic traceability

El presente artículo pretende describir y caracterizar el proceso de diseño y construcción de un Modelo Lógico Conceptual de ingeniería para hacer seguimiento y evaluación a la actividad turística de una región. Se detallan en forma clara los elementos funcionales y técnicos de un Sistema Tecnológico de Trazabilidad Turística que gracias a la incorporación de las tecnologías de diseño de software y herramientas web aporta a diversos grupos de interés reportes, indicadores e índices sobre perfil y comportamiento (trazas turísticas de recorridos y consumos, datos estadísticos de la actividad turística como la tipología del turista, sus visitas previas, intereses en otros destinos, motivos de viaje, género, posible gasto, rango de edad, transporte de llegada, nacionalidad y residencia). Dichos reportes, a través de sus métricas generan información, en vocabulario común a los involucrados, que facilita la toma de decisiones, mejoras y ventajas competitivas a nivel del sector y de las organizaciones que lo componen. Abstract. This article aims to characterize and describe the designing and construction process of an engineering conceptual logic model to monitor and evaluate the touristic activities in a given region. It clearly outlines the functional and technical elements of a technological system of touristic traceability,that thanks to the incorporation of software design and web tools technologies,reports to severalstakeholders, indicators and indexes about profile and behavior variables (tourist traces of routes and consumptions, statistical data about the tourist activity and the typology of the tourists, their previous visits, their interests in other destinations, reasons for traveling, gender, possible expenditure, age range, transport on arrival, nationality and residence). These reports, through their metrics, generate information in a common vocabulary to the stakeholders, that facilitates decision-making processes, improvements and competitive advantages at sector level and its organizations

Planeamiento óptimo del manejo integrado de malezas

En el presente trabajo se propone optimizar un modelo matemático de simulación multianual de escenarios de Manejo Integrado de Malezas (MIM), el cual representa la interacción de la maleza Avena fatua L. en competencia con trigo y cebada, un sistema productivo típico del sudoeste bonaerense. Con este objetivo se desarrolló una herramienta propia basada en el optimizador estocástico por enjambre de partículas (PSO), al cual se le agregaron técnicas para el manejo de restricciones, variables binarias y múltiples objetivos. El estudio propuesto tiene en cuenta tanto el impacto ambiental como el beneficio económico y permite estimar anualmente: (i) el tipo de cultivo a sembrar; (ii) su densidad de siembra; (iii) el tipo de cultivar; (iv) la fecha de siembra; (v) el método de control de la maleza y la (vi) fecha de aplicación del control.Sociedad Argentina de Informática e Investigación Operativ

Simulación de manejo integrado de malezas: sistema Euphorbia davidii – Soja

Se presenta una aplicación de un modelo de simulación cultivo-maleza que permite comparar y evaluar estrategias de Manejo Integrado de Malezas. Específicamente el modelo fue parametrizado para el cultivo de soja en competencia con Euphorbia davidii. Se utilizó la información demográfica de la maleza y del cultivo relevada a campo en la zona centro de la provincia de Buenos Aires, a lo largo de 2 ciclos de cultivo (2011/2012 y 2013/2014). El modelo se sometió a un proceso de calibración y posterior validación con 70 y 30% de las observaciones respectivamente (N=37). Se generaron 2 casos anuales con el objetivo de demostrar las prestaciones del modelo y se comparó el efecto de diversas estrategias de manejo, evaluando rendimiento, competencia, resultado económico e impacto ambiental. En uno de los casos analizados se observa que las medidas de manejo cultural podrían disminuir 46% la competencia interespecífica y 40% la producción de semillas, aumentando 6% el rendimiento esperado y 44 US$.ha⁻¹ el margen bruto, para niveles similares de impacto ambiental.Sociedad Argentina de Informática e Investigación Operativ

Synthesis of natural ether lipids and 1-O-hexadecylglycero-arylboronates via an epoxide-ring opening approach: Potential antifouling additives to marine paint coatings

In this paper a new and efficient procedure for the synthesis of natural 1-O- alkyl glyceryl ethers such as chimyl (1), batyl (2) and selachyl (3) is described. Alkyl glycidyl ethers (4-6) were synthetized using solvents free reactions. A stereospecific ring-opening reaction of epoxides (4-6) with phenylboronic acid in dry dioxane, giving rise to cyclic arylboronates in high yields (90-98%). Seven new 1-O-hexadecylglycero-arylboronates (7-f) and chimyl alcohol (1) were evaluated in laboratory antifouling assays

Sistema web para asistencia en el manejo integrado de malezas

Este trabajo presenta un sistema web que automatiza la ejecución de algunos modelos y la visualización de sus resultados. El mismo puede accederse en un sitio de internet público. El principal objetivo de este proyecto es poner a disposición de una amplia comunidad, en tiempo real y de una manera amigable, los desarrollos generados en el ámbito de nuestro grupo de investigación.Sociedad Argentina de Informática e Investigación Operativ

Metabolic responses to the acute ingestion of two commercially available carbonated beverages: A pilot study

<p>Abstract</p> <p>Background</p> <p>The purpose of this placebo-controlled, double-blind cross-over study was to compare the effects of two commercially available soft drinks on metabolic rate.</p> <p>Methods</p> <p>After giving informed consent, twenty healthy men and women were randomly assigned to ingest 12 ounces of Celsius™ and, on a separate day, 12 ounces of Diet Coke®. All subjects completed both trials using a randomized, counterbalanced design. Metabolic rate (via indirect calorimetry) and substrate oxidation (via respiratory exchange ratio) were measured at baseline (pre-ingestion) and at the end of each hour for 3 hours post-ingestion.</p> <p>Results</p> <p>Two-way ANOVA revealed a significant interaction (p < 0.001) between trials in metabolic rate. Scheffe post-hoc testing indicated that metabolic rate increased by 13.8% (+ 0.6 L/min, p < 0.001) 1 hr post, 14.4% (+0.63 L/min, p < 0.001) 2 hr post, and 8.5% (+0.37 L/min, p < 0.004) 3 hr post Celsius™ ingestion. In contrast, small (~4–6%) but statistically insignificant increases in metabolic rate were noted following Diet Coke^®ingestion. No differences in respiratory exchange ratio were noted between trials.</p> <p>Conclusion</p> <p>These preliminary findings indicate Celsius™ has thermogenic properties when ingested acutely. The effects of repeated, chronic ingestion of Celsius™ on body composition are unknown at this time.</p

Harpgophytum procumbens for osteoarthritis and low back pain: A systematic review

BACKGROUND: The objective of this review is to determine the effectiveness of Harpagophytum procumbens preparations in the treatment of various forms of musculoskeletal pain. METHODS: Several databases and other sources were searched to identify randomized controlled trials, quasi-randomized controlled trials, and controlled clinical trials testing Harpagophytum preparations in adults suffering from pain due to osteoarthritis or low back pain. RESULTS: Given the clinical heterogeneity and insufficient data for statistical pooling, trials were described in a narrative way, taking into consideration methodological quality scores. Twelve trials were included with six investigating osteoarthritis (two were identical trials), four low back pain, and three mixed-pain conditions. CONCLUSIONS: There is limited evidence for an ethanolic Harpagophytum extract containing less than <30 mg harpagoside per day in the treatment of knee and hip osteoarthritis. There is moderate evidence of effectiveness for (1) the use of a Harpagophytum powder at 60 mg harpagoside in the treatment of osteoarthritis of the spine, hip and knee; (2) the use of an aqueous Harpagophytum extract at a daily dose of 100 mg harpagoside in the treatment of acute exacerbations of chronic non-specific low back pain; and (3) the use of an aqueous extract of Harpagophytum procumbens at 60 mg harpagoside being non-inferior to 12.5 mg rofecoxib per day for chronic non-specific low-back pain (NSLBP) in the short term. Strong evidence exists for the use of an aqueous Harpagophytum extract at a daily dose equivalent of 50 mg harpagoside in the treatment of acute exacerbations of chronic NSLBP

Decision Support Systems for Weed Management

Editors: Guillermo R. Chantre, José L. González-Andújar.Weed management Decision Support Systems (DSS) are increasingly important computer-based tools for modern agriculture. Nowadays, extensive agriculture has become highly dependent on external inputs and both economic costs, as well the negative environmental impact of agricultural activities, demands knowledge-based technology for the optimization and protection of non-renewable resources. In this context, weed management strategies should aim to maximize economic profit by preserving and enhancing agricultural systems. Although previous contributions focusing on weed biology and weed management provide valuable insight on many aspects of weed species ecology and practical guides for weed control, no attempts have been made to highlight the forthcoming importance of DSS in weed management. This book is a first attempt to integrate 'concepts and practice' providing a novel guide to the state-of-art of DSS and the future prospects which hopefully would be of interest to higher-level students, academics and professionals in related areas

Intersection of inflammation and herbal medicine in the treatment of osteoarthritis

Herbal remedies and dietary supplements have become an important area of research and clinical practice in orthopaedics and rheumatology. Understanding the risks and benefits of using herbal medicines in the treatment of arthritis, rheumatic diseases, and musculoskeletal complaints is a key priority of physicians and their patients. This review discusses the latest advances in the use of herbal medicines for treating osteoarthritis (OA) by focusing on the most significant trends and developments. This paper sets the scene by providing a brief introduction to ethnopharmacology, Ayurvedic medicine, and nutrigenomics before discussing the scientific and mechanistic rationale for targeting inflammatory signalling pathways in OA by use of herbal medicines. Special attention is drawn to the conceptual and practical difficulties associated with translating data from in-vitro experiments to in-vivo studies. Issues relating to the low bioavailability of active ingredients in herbal medicines are discussed, as also is the need for large-scale, randomized clinical trial