Search results for "Trie"

Anti-inflammatory profile of dehydrocostic acid, a novel sesquiterpene acid with a pharmacophoric conjugated diene

2005

Sesquiterpene acids are natural products that, in contrast with the thoroughly studied sesquiterpene lactones, have received little pharmacological attention. A good source of this class of compounds is Inula viscosa (Asteraceae), a plant with documented anti-inflammatory effects. The present paper gives the results of our investigations on the biochemical mechanisms involved in the anti-inflammatory activity of one such compound, dehydrocostic acid. The most salient findings were that in vitro dehydrocostic acid inhibits leukotriene B(4) production (IC(50)=22 microM), elastase activity (IC(50)=43 microM) and bee venom phospholipase A(2) activity (IC(50)=17 microM). Furthermore, this sesqui…

Risk Burden of Coronary Perforation in Chronic Total Occlusion Recanalization: Latin American CTO Registry Analysis

2022

Background Coronary perforation is a life‐threatening complication of acute percutaneous coronary intervention (PCI) for chronic total occlusions (CTO), but data on midterm outcomes are limited. Methods and Results Data from LATAM (Latin American)‐CTO Registry (57 centers; 9 countries) were analyzed. We assessed the risk of 30‐day, 1‐year major adverse cardiac events of coronary perforation using time‐to‐event and weighted composite end point analysis having CTO PCI without perforation as comparators. Additionally, we studied the independent predictors of perforation in these patients. Of 2054 patients who underwent CTO PCI between 2015 and 2018, the median Multicenter CTO Registry in Japa…

Comparison of MeSH terms and KeyWords Plus terms for more accurate classification in medical research fields. A case study in cannabis research

2021

Abstract KeyWords Plus and Medical Subject Headings (MeSH) are widely used in bibliometric studies for topic mapping. The objective of this study is to compare the two description systems in documents about cannabis research to find the concordance between systems and establish whether there is neutrality in topic mapping. A total of 25,593 articles from 1970 to 2019 were drawn from Web of Science's Core Collection and Medline and analyzed. The tidytext library, Zipf's law, topic modeling tools, the contingency coefficient, Cramer's V, and Cohen's kappa were used. The results included 10,107 MeSH terms and 28,870 KeyWords Plus terms. The Zipf distribution of the terms was different for each…

A Survey of Multi-Label Topic Models

2019

Every day, an enormous amount of text data is produced. Sources of text data include news, social media, emails, text messages, medical reports, scientific publications and fiction. To keep track of this data, there are categories, key words, tags or labels that are assigned to each text. Automatically predicting such labels is the task of multi-label text classification. Often however, we are interested in more than just the pure classification: rather, we would like to understand which parts of a text belong to the label, which words are important for the label or which labels occur together. Because of this, topic models may be used for multi-label classification as an interpretable mode…

Using Topic Modeling Methods for Short-Text Data: A Comparative Analysis

2020

With the growth of online social network platforms and applications, large amounts of textual user-generated content are created daily in the form of comments, reviews, and short-text messages. As a result, users often find it challenging to discover useful information or more on the topic being discussed from such content. Machine learning and natural language processing algorithms are used to analyze the massive amount of textual social media data available online, including topic modeling techniques that have gained popularity in recent years. This paper investigates the topic modeling subject and its common application areas, methods, and tools. Also, we examine and compare five frequen…

Genocide, torture, and terrorism: ranking international crimes and justifying humanitarian intervention

2018

Water flow paths in soil control element exports in an Andean tropical montane forest

2008

We tested the hypothesis that concentrations of chemical constituents in stream water can be explained by the depth of water flow through soil. Therefore, we measured the concentrations of total organic carbon (TOC), NO 3 -N, NH 4 -N, dissolved organic nitrogen (DON), P, S, K, Ca, Mg, Na, Al and Mn in rainfall, throughfall, stemflow, litter leachate, mineral soil solution and stream water of three 8-13 ha catchments on steep slopes (1900-2200 m above sea level) of the south Ecuadorian Andes, from April 1998 to April 2003. Peak C (14-22 mg litre -1 ), N (0.6-0.9 mg litre -1 ), K (0.5-0.7 mg litre -1 ), Ca (0.6-1.0 mg litre -1 ), Mg (0.3-0.5 mg litre -1 ), Al (110-390 μg litre -1 ) and Mn (3.…

Challenges of tourism development in winter sports destinations and for post-event tourism marketing: the cases of the Ramsau Nordic Ski World Champi…

2013

Previous research on winter sport destinations which have hosted big sport events suggested that there is a gap between the relevance of the systematic considerations of the specific challenges of tourism destination marketing and common practice. The study therefore investigates through individual interviews with key stakeholders (1) the level of agreement with central theoretical statements among stakeholders and key decision-makers at the Austrian destinations Ramsau (a traditional Nordic destination) and St Anton (a traditional Alpine destination) and (2) the relevance of this knowledge to the practical work of the key decision-makers at the destinations. The results show that there is …

I Piani Strategici per il Turismo

2022

From many points of view, the 30-year period from 1990 to 2020 was a period of great change that led, as a consequence, to a continuous reshaping of public policies for the tourism sector and related industries.The Tourism Startegic Plan for Italy, is based on a great heritage of ideas and proposals, elaborated with a process of wide sharing, which has not exhausted its function with approval but will continue after the Covid and in the years to come. The Plan, in fact, was conceived as a constantly evolving "living" organism. Moreover, it adopts a strategic vision that, starting from the full awareness of the opportunities of the tourist development of our country, identifies four objectiv…

Repensando las interacciones turismo-desarrollo: una revisión paradigmática

2016

The growth observed in the international tourism sector in the last three decades, together with the existence of satisfactory empirical evidence, in terms of the contribution of tourism activities to economic growth in different countries, has generated a tacit (and uncritical) consensus around Tourism, as an instrument for the development of the world's periphery, causing a growing role for tourism within the Development policies and strategies of both low-income countries, as well as peripheral areas and areas in decline. The present work proposes a review of the Tourism-Development relationship from the Theory of Development and its main paradigms (Modernization, Dependence, Neoliberal-…