Location-based social networking services are becoming increasingly popular among the multitude of mobile applications. The new location sharing functionalities made possible by GPS-based mobile phones, however, also raise two main privacy issues: users are typically limited to a only few built-in options that do not support fine-granular or even changing privacy preferences, and location data ...

Vehicle communications are becoming the cornerstone in the future vehicle equipment. More specifically, vehicle to vehicle communications (V2V) are the main object of researching nowadays, because vehicle to infrastructure (V2I) approximations are already being developed as commercial solutions. Cellular networks (CN) are usually applied in V2I solutions, whereas ad hoc networks are practically...

PROBABILITY ON GRAPHS AND GROUPS: THEORY AND APPLICATIONS Natalia Mosina We introduce the notion of the mean-set (expectation) of a graphor groupvalued random element. Using this concept, we prove a novel generalization of the strong law of large numbers on graphs and groups. Some other relevant results about configurations of mean-sets (or center-sets) in trees and free groups, which may be of...

Recommender systems can mitigate the information overload problem and help workers retrieve knowledge based on their preferences. In a knowledge-intensive environment, knowledge workers need to access taskrelated codified knowledge (documents) to perform tasks. A worker’s document referencing behavior can be modeled as a knowledge flow (KF) to represent the evolution of his or her information n...

Low-degree-of-freedom (Low-DOF) parallel manipulators (PMs) have drawn extensive interests, particularly in type synthesis in which two main formal approaches were established by using the reciprocal screw system theory and Lie group theory. This paper aims at numeration and type synthesis of orthogonal translational parallel manipulators (OTPMs) by resorting to an integration of the groupbased...

Introduction. This paper reports results from an ethnographic study of teacher trainees’ information activities in digital, groupbased learning and their relation to the interplay between use and appropriation of digital tools and the learning environment. Method. The participants in the present study are 249 pre-school teacher trainees in Sweden. Three key informants and their teams were follo...

Today a great many medical schools have turned to a problem-based learning (PBL) approach to teaching. PBL instructional models vary but the general approach is student-centered, small group, collaborative problem-based learning activities. While PBL has many strengths, effective PBL requires the tutor to provide a high degree of personal attention to the students. In the current academic envir...

Public health and smoking are old enemies because smoking is among the 10 leading causes of ill health on a global scale and is also possible to prevent, as repeatedly reported (1). In both developed and developing countries, smoking takes its heavy toll of lives every year, both directly and indirectly, through exposure to passively inhaled tobacco smoke (2) or via feto-placental effects. Much...

INTRODUCTION Because of the need for a well-trained public health workforce, professional competencies have been recently revised by the Institute of Medicine and the National Health Educator Competencies Update Project. This study compared the self-identified training needs of public health educators with the updated competencies and assessed employer support for continuing education. METHOD...

Following the introduction of the 1990 contract for general practitioners and the new postgraduate education allowance, the Northern Ireland Continuing Medical Education Group, comprising the clinical tutors from four Belfast hospitals and members of the University department of general practice, was established to provide high quality co-ordinated continuing medical education for general pract...