The emergence of grid and cloud computing systems has introduced new security concepts, so it requires new access control approaches. Traditional systems engineering processes can be enriched with helper approaches that can facilitate the definition of access control requirements in such complex environments. Looking towards a holistic approach on the definition of access control requirements, ...

Investigators who use phenomenological approaches to understand experiences of human healing, caring, and wholeness need to consider the differences that exist between descriptive and hermeneutic phenomenology. In this article, these two approaches are compared and contrasted with respect to roots, similarities, and differences. Guidelines are offered to assist prospective investigators in sele...

This paper is focused on algorithmic issues for biometric face verification (i.e., given an image of the face and an identity claim, decide whether they correspond to each other or not). Several alternatives for geometric normalization of images, photometric normalization, dimensionality reduction and similarity measures are proposed and compared using the XM2VTS database and the associated Lau...

Entropy and compression have been used to distinguish fetuses at risk of hypoxia from their healthy counterparts through the analysis of Fetal Heart Rate (FHR). Low correlation that was observed between these two approaches suggests that they capture different complexity features. This study aims at characterizing the complexity of FHR features captured by entropy and compression, using as refe...

In this paper we consider the modern theory of the Bayesian brain from cognitive neurosciences in the light of recommender systems and expose potentials for our community. In particular, we elaborate on noisy user feedback and the thus resulting multicomponent user models, which have indeed a biological origin. In real user experiments we observe the impact of both factors directly in a repeate...

In this paper we focus on the great outburst of Gabor-based methods for face biometrics occurred in the last few years. Analytical approaches rely on the representation of a face with the Gabor responses computed on specific landmarks, while holistic methods take into account the face as a whole. We explore the role played by Gabor wavelets in international competitions, such as FERET or BANCA,...

Strong competition in the manufacturing industry makes efficient and effective manufacturing processes a critical success factor. However, existing warehousing and analytics approaches in manufacturing are coined by substantial shortcomings, significantly preventing comprehensive process improvement. Especially, they miss a holistic data base integrating operational and process data, e. g., fro...

Some soft and critical emancipatory systems approaches have relied on some version of the idea that in knowing, humans organise the content of experience by means of conceptual schemes. Based on this, they have further proposed ways of describing particular views and beliefs of persons involved in a situation of concern, with the purpose of proposing understanding and/or critique. Furthermore, ...

Automatic recognition of facial expressions is an important component for human-machine interfaces. It has lot of attraction in research area since 1990's.Although humans recognize face without effort or delay, recognition by a machine is still a challenge. Some of its challenges are highly dynamic in their orientation, lightening, scale, facial expression and occlusion. Applications are in the...

Feature representation and classi cation are two major issues in facial expression analysis. In the past, most methods used either holistic or local representation for analysis. In essence, local information mainly focuses on the subtle variations of expressions and holistic representation stresses on global diversities. To take the advantages of both, a hybrid representation is suggested in th...