Identifying nonrandom clade diversification is a critical first step toward understanding the evolutionary processes underlying any radiation and how best to preserve future phylogenetic diversity. However, differences in diversification rates have not been quantitatively assessed for the majority of groups because of the lack of necessary analytical tools (e.g., complete species-level phylogen...

Informally speaking, diversification of search results refers to a trade-off between relevance and diversity in the set of results. In this article, we present a unifying framework for search result diversification using the axiomatic approach. The characterization provided by the axiomatic framework can help design and compare diversification systems, and we illustrate this using several examp...

Informally speaking, diversification of search results refers to a trade-off between relevance and diversity in the set of results. In this article, we present a unifying framework for search result diversification using the axiomatic approach. The characterization provided by the axiomatic framework can help design and compare diversification systems, and we illustrate this using several examp...

We report our systems and experimental results in the diversity task of web track 2012. Our goal is to exploit the structured data, i.e., the ontologies, as well as unstructured data for search result diversification. We use two strategies in the diversification systems. The first strategy combines the ontology and unstructured data to extract integrated subtopics. It then uses the coverage bas...

This paper investigates the optimal design of diversification rules for regulated enterprises. Diversification by a regulated firm generates profit in non-core markets that can be shared with core customers. However, a diversified firm may divert its attention and effort to its non-core operations, causing consumer welfare in the core market to decline. When diversification is permitted, lower ...

within the broader category of rural tourism, agrotourism is a type of tourism carried out in avery specific environment, mixed livestock and tillage farms. its importance resides in the fact that it offers the possibility of complementing the income generated by the farm with income generated from tourism while at the same time carrying out an activity that promotes the conservation of nature....

a r t i c l e i n f o Using resource-based view (RBV) of the firm as a theoretical backdrop; we aim to find out the relative impact of a firm's functional capabilities (namely, marketing and operations) and diversification strategies (product/ service and international diversification) on financial performance. We hypothesize that this linkage depends on the firm's relative efficiency to integr...

Diversification has been the subject of much examination in agribusiness firms. According to behavioral research, firms diversify through a process of either exploitation or exploration. Exploration entails searching for ideas and technologies that broaden a firm’s established experiences. Such diversification not only exposes a firm to a new technologies to which can be recombined with a firm’...