We need to analyse a large number of e-mails sent by the citizens to the customer services department of a governmental organisation based in Sweden. To carry out this analysis we clustered a large number of e-mails with the aim of automatic e-mail answering. One issue that came up was whether we should use the whole e-mail including the thread or just the original query for the clustering. In ...

We present four methods of assessing the diversification potential within a stockmarket, two of these are based on principal component analysis. They were applied to theAustralian stock exchange for the years 2000 to 2014 and all show a consistent picture. Thepotential for diversification declined almost monotonically in the three years prior to the 2008financial crisis. On one ...

This paper examines the hypothesis that industries engaged in international fragmentation of production experience greater skill upgrading using a panel dataset of Japanese manufacturing over the period 1980-2000. The novelty of the study comes from the use of a newly constructed index using trade data on parts and components to measure intraindustry variations in the degree of international ve...

We examine whether institutional investors, and specifically underwriters, have an information advantage over other market participants in new public companies. We focus our attention on a sample of publicly traded firms that have become the target of an IPO-related securities class action lawsuit filed under Section 11 of the 1933 Securities Act between January 1991 and December 2006 and a mat...

We analyze how subjects’ self-assessment depends on whether its accuracy is observable to others. We find that women downgrade their self-assessment given observability while men do not. Women avoid the shame they may have if others observe that they overestimated themselves. Men, however, do not seem to be similarly shame-averse. This gender difference may be due to different societal expectat...

In this work we propose a self-adaptive clock based on a ring oscillator as the solution for the increasing uncertainty in the critical path delay. This uncertainty increase forces to add more safety margins to the clock period which produces a circuit performance downgrade. We evaluate three self-adaptive clock systems: free running ring oscillator, infinite impulse response filter controlled ...

|Common security models such as Bell-LaPadula focus on the control of access to sensitive data but leave some important systems issues unspeciied, such as the implementation of read-only objects, garbage collection, and object upgrade and downgrade paths. Consequently, diier-ent implementations of the same security model may have connicting operational and security semantics. We propose the use...

Background The surgical treatment of bone tumours can result in large peri-operative blood loss, due to their large sizes and hypervascularity. Pre-operative embolisation has been successfully used to downgrade vascularity, thus reducing peri-operative blood loss and its associated complications. Methods Pre-operative embolisation was successfully undertaken on twenty-six patients with a vari...

We present four methods of assessing the diversification potential within a stock market, and two of these are based on principal component analysis. They were applied to the Australian stock exchange for the years 2000 to 2014 and all show a consistent picture. The potential for diversification declined almost monotonically in the three years prior to the 2008 financial crisis, leaving investo...