This paper presents a model for keyword extraction, extending the basic concepts commonly used in this task, in order to get a formal background that allows determining the importance of the keywords to the documents. The proposed model combines an artificial immune system with a mathematical background based on information theory; this new model has the advantage that does not need any domain ...

As a new information hiding method, coverless information hiding has become a hot issue in the field of information security. The existing coverless information hiding method can hide only one Chinese character in each natural text. However, the problem of the method is that the hiding capacity is too small. To address this problem, a new method named coverless multi-keywords information hiding...

the purpose of this paper is a comparative study of information technology management phd programmes at the world top universities. so, the top five rankings of universities were identified. then the top universities in the world generally and information systems/information technology field were identified too. 19 related fields were investigated. the titles of the courses of them were documen...

This paper presents a method to classify medical texts based on keywords with the support of additional semantic information. The classification is performed in two phases. In the first phase, keyword sets are extracted for each type of disease presented in the training set.

introduction: the concept of organizational culture usually is considered as a moderating factor in using information technology (it). the present study aimed to review the association between harrison cultural typology and the acceptance of hospital information system (his) by its users in non-university hospitals of iran university of medical sciences (tehran, iran). methods: this research wa...

conclusion pacs is highly accepted in all three emergency departments especially among specialists. pu, peu and change are factors influencing pacs acceptance. our study can be used as an evidence of pacs acceptance in emergency wards. results mean age of participants was 32.9 years (standard deviation [sd] = 6.08). participants with the specialty degree got a higher acceptance score than the t...