Search results for "RANK"

Anti-Inflammatory and Anti-Cancer Activity of Boswellic Acids from Frankincense (Boswellia serrata Roxb. et Colebr, B. carterii Birdw.)

2011

Patterns and causes of incongruence between plastid and nuclear Senecioneae (Asteraceae) phylogenies

2010

One of the longstanding questions in phylogenetic systematics is how to address incongruence among phylogenies obtained from multiple markers and how to determine the causes. This study presents a detailed analysis of incongruent patterns between plastid and ITS/ETS phylogenies of Tribe Senecioneae (Asteraceae). This approach revealed widespread and strongly supported incongruence, which complicates conclusions about evolutionary relationships at all taxonomic levels. The patterns of incongruence that were resolved suggest that incomplete lineage sorting (ILS) and/or ancient hybridization are the most likely explanations. These phenomena are, however, extremely difficult to distinguish beca…

Boosting for ranking data: an extension to item weighting

2021

Gli alberi decisionali sono una tecnica predittiva di machine learning particolarmente diffusa, utilizzata per prevedere delle variabili discrete (classificazione) o continue (regressione). Gli algoritmi alla base di queste tecniche sono intuitivi e interpretabili, ma anche instabili. Infatti, per rendere la classificazione più affidabile si `e soliti combinare l’output di più alberi. In letteratura, sono stati proposti diversi approcci per classificare ranking data attraverso gli alberi decisionali, ma nessuno di questi tiene conto ne dell’importanza, ne delle somiglianza dei singoli elementi di ogni ranking. L’obiettivo di questo articolo `e di proporre un’estensione ponderata del metodo …

On the origin and diversification of Podolian cattle breeds: testing scenarios of European colonization using genome-wide SNP data

2021

AbstractBackgroundDuring the Neolithic expansion, cattle accompanied humans and spread from their domestication centres to colonize the ancient world. In addition, European cattle occasionally intermingled with both indicine cattle and local aurochs resulting in an exclusive pattern of genetic diversity. Among the most ancient European cattle are breeds that belong to the so-called Podolian trunk, the history of which is still not well established. Here, we used genome-wide single nucleotide polymorphism (SNP) data on 806 individuals belonging to 36 breeds to reconstruct the origin and diversification of Podolian cattle and to provide a reliable scenario of the European colonization, throug…

Ethical Ratings: A Systematic Analysis Oriented to Business Economics

2013

Abstract In a previous study we have researched the causes of the current global crisis, which manifests itself in financial terms, but whose origin is due to the ethical model of reference. Following these ethical issues, the aims and topics of the present paper are: producing a systematic analysis of the ethical indicators used in the current international practices; extrapolating the ethical ranking models with a high relevance in Business Economics and highlighting the strong limits of the methodology in current use.

Assessing the efficiency of Chilean water and sewerage companies accounting for uncertainty

2016

Abstract Efficiency assessment of water and sewerage companies (WaSCs) has attracted considerable attention both for water company managers and water regulators. Within the methodological approaches that can be applied to estimate efficiency scores, data envelopment analysis (DEA) is the most widely applied technique. In spite of the positive features of DEA, it presents a major drawback which is its deterministic nature. In other words, conventional DEA models do not account for uncertainty in the data. To overcome this limitation, we assess, for the first time, the efficiency of a sample of Chilean WaSCs by using a DEA model with statistical tolerance in the data. Hence, 81 efficiency sco…

Web‐based national tourism promotion in the Mediterranean area

2005

The purpose of this study is to analyze the promotion of the Mediterranean areas over the Internet. To meet this objective, the tourism board of each country is identified and Website indicators based on the assessment of seven “best practices” (WTO 1999) and e‐business for tourism strategies (WTO 2001) are analyzed. Content analysis reveals differences among countries. Managerial implications are developed.

Chapter 3. Prosodic versatility, hierarchical rank and pragmatic function in conversational markers

2019

Connectedness and connectivity of the Natura 2000 network of protected areas across country borders in the European Union

2012

Abstract We studied the spatial connectedness of Natura 2000 site boundaries and the functional connectivity of the Natura 2000 network across the 34 terrestrial borders of the European Union. Connectivity was measured by the dispersal success of 192 reptile, amphibian, invertebrate and plant species from Annex II of the European Union Habitats Directive, based on the presence of same species on both sides of the borders. Connectedness and connectivity varied greatly between state borders, with good and bad examples found in all parts of the European Union. Connectedness and connectivity were positively correlated. However, a few outlying examples showed that good connectedness is not neces…

Divergent Thinking in Older Adults : Understanding its Role in Well-being

2021

The purpose of the study was to explore the nature of the relationship between Divergent Thinking and Well-being. Two theoretical models about the relationship between Divergent thinking, Psychological well-being and Life Satisfaction were tested. A total of 152 subjects between 65 and 84 years old participated in the study. Final model emphasises the idea that PWB is affected by DT and that PWB is also significantly related to LS. The model also highlights the importance of four dimensions of well-being: environmental mastery, life purpose, personal growth and self-acceptance. The goodness-of-fit indexes confirmed the existence of a significant relationship between DT and well-being, and b…