A bar-and-joint framework is a finite set of points together with specified distances between selected pairs. In rigidity theory we seek to understand when the remaining pairwise distances are also fixed. If there exists a pair of points which move relative to one another while maintaining the given distance constraints, the framework is flexible; otherwise, it is rigid. Counting conditions due...

Bestseller, Blockbuster, Top 100 - Listen und Rankings sind zentrale Ordnungs- Wissensstrukturen der Populärkultur. Auf Internetplattformen in Sozialen Medien machen sie populärkulturelles Wissen sichtbar, verfügbar tauschbar. Ralf Adelmann geht flüchtigen heterogenen Wissenskultur dieser Taxonomien des Populären nach zeigt: Sie arrangieren strukturieren als mediale Formen populärkulturelle Pro...

A ranking is an ordered sequence of items, in which an item with higher ranking score is more preferred than the items with lower ranking scores. In many information systems, rankings are widely used to represent the preferences over a set of items or candidates. The consensus measure of rankings is the problem of how to evaluate the degree to which the rankings agree. The consensus measure can...

Abstract In this work, I present a recursive algorithm for computing the number of rankings consistent with a set of optimal candidates in the framework of Optimality Theory. The ability to measure this quantity, which I call the r-volume, allows a simple and effective Bayesian strategy in learning: choose the candidate preferred by a plurality of the rankings consistent with previous observati...

OBJECTIVE Examine overall level of and variation in local health department (LHD) use and perceived impact of the County Health Rankings report (Rankings) in Florida (2010, 2011) and North Carolina (2010-2012, 2013). DESIGN Two cross-sectional surveys among LHDs. PARTICIPANTS Local health directors and relevant staff. MAIN OUTCOME MEASURES Use of the Rankings was measured by asking respon...

the purpose of this study was to determine influence on indexing language in ranking the results of image searching in the google search engine. an experimental method was conducted. the population in this study was 30 old stamps of the years 1952 to 1978. for doing this study, two sites were designed on the web. in the first site 30 images were uploaded based on the controlled language and in ...

University rankings are a topic of controversy and contention in many countries. Poland is no exception. This chapter analyzes aspects of rankings in the Polish context. Poland is a particularly interesting case, since it is a middle-sized coun­ try with a middle-tier higher education system. Among the questions discussed here are: What is the impact of global university rankings on the Polish ...

BACKGROUND Research rankings based on bibliometrics today dominate governance in academia and determine careers in universities. METHOD Analytical approach to capture the incentives by users of rankings and by suppliers of rankings, both on an individual and an aggregate level. RESULT Rankings may produce unintended negative side effects. In particular, rankings substitute the "taste for sc...