Impairments in cell migration processes may cause various diseases, among which cancer cell metastasis, tumor angiogenesis, and the disability of immune cells to infiltrate into tumors are prominent ones. Mathematical modeling has been widely used to analyze the cell migration process. Cell migration is a complicated process and requires statistical methods such as random walk for proper analys...

We present our ongoing work on the development of a new quadrotor aerial vehicle which has a tilt-wing mechanism. The vehicle is capable of take-off/landing in vertical flight mode (VTOL) and flying over long distances in horizontal flight mode. Full dynamic model of the vehicle is derived using Newton-Euler formulation. Linear and nonlinear controllers for the stabilization of attitude of the ...

As the number of systems which offer annotations on digital documents increases, robust anchoring of annotations is a key challenge. It is especially important if the annotator lacks write-access to the document being annotated. For example, if someone makes an annotation on a web page today and the web page changes tomorrow, what happens to the annotation? One approach is simply to “orphan” th...

Several public administrations are currently migrating towards open source software (OSS) on the desktop. In this paper, we describe a case study of a large Belgian public administration that is currently migrating its desktops towards Linux and OpenOffice.org. The goal of the paper is to discuss whether such a migration is feasible, and why and how the migration could be undertaken. We describ...

The aim of this study is to analyze the migration process of the rural population of Bangladesh. Heckman Probit model with sample selection was applied in this paper to explore the determinants of migration and intensity of migration at farm household level. The farm survey was conducted in the central part of Bangladesh on 160 farm households with migrant and on 154 farm households without mig...

Decentralized and unstructured peer-to-peer (P2P) networks such as Gnutella are attractive for large-scale information retrieval and search systems due to scalability, fault-tolerance, and self-organizing nature. This decentralized architecture, however, makes it difficult for traditional P2P networks to globally share useful semantic knowledge among nodes. As a result, traditional P2P networks...

Methods for measuring or estimating ground shape by a laser range finder and a vision sensor (Exteroceptive sensors) have critical weaknesses in terms that these methods need a prior database built to distinguish acquired data as unique surface conditions for driving. Also, ground information by Exteroceptive sensors does not reflect the deflection of ground surface caused by the movement of UG...

--This study draws on uses and gratification theory (UGT) to develop and empirically test a model for explaining enterprise resource planning (ERP) system acceptance and use. Accordingly, gratifications from the UGT such as enjoyment and informativeness are purported to have direct effects on attitudes toward using ERP and satisfaction with ERP. In turn, ERP attitude and satisfaction hypothesiz...