A common strategy to assign keywords to documents is to select the most appropriate words from the document text. One of the most important criteria for a word to be selected as keyword is its relevance for the text. The tf.idf score of a term is a widely used relevance measure. While easy to compute …

Organized crime differs substantially from high-volume crime, at least theoretically. But do offenders differ as well? This study makes an extensive comparison between offenders who engage in organized crime at a particular moment in their lives and general offenders, based on various dimensions of their …

OBJECTIVE: To examine the use of a submaximal exercise test in detecting change in fitness level after a physical training program, and to investigate the correlation of outcomes as measured submaximally or maximally. DESIGN: A prospective study in which exercise testing was performed before and after …

After being hospitalised, 30–60% of older patients experience a decline in functioning, resulting in a decreased quality of life and autonomy. The objective of this study was to establish a screening instrument for identifying older hospitalised patients at risk for functional decline by comparing the …

This paper describes the ecological concept of strategic fit in order to enhance sustainable and innovative organisations. The Ecological System Model integrates concepts of ecology and evolutionary economic theory by comparing organisations and ecosystems at a consistent system level. It introduces …

In this study, we assessed the feasibility of a specific elaboration of the efficacy construct, distinguishing between personal and contextual aspects, as a criterion for comparing learning environments. The participants were 163 students from two student-regulated and two teacher-regulated programs …

OBJECTIVE: To conduct a randomized controlled trial and compare the effects on cancer survivors' quality of life in a 12-week group-based multidisciplinary self-management rehabilitation program, combining physical training (twice weekly) and cognitive-behavioral training (once weekly) with those of …

Cochrane Database of Systematic Reviews 2008, Issue 2. Art. No.: CD005381. DOI: 10.1002/14651858.CD005381.pub2. Background: Physical activity is beneficial for healthy ageing. It may also help maintain good cognitive function in older age. Aerobic activity improves cardiovascular fitness, but it is …

The research assesses the value chain and quality control of the pork industry in Beijing municipality of China. Through interviewing all the actors of pork industrial value chain in Beijing, the roles functions and problems of each of the actor of the pork industrial value chain of Beijing were investigated …

Over the last few decades the power struggle between nations to win medals in major international competitions has intensified. This has led to national sports organisations and governments throughout the world spending increasing sums of money on elite sport. Several nations have indeed shown that accelerated …