The Emergence of Human Consciousness: From Fetal to Neonatal Life

A simple definition of consciousness is sensory awareness of the body, the self, and the world. The fetus may be aware of the body, for example by perceiving pain. It reacts to touch, smell, and sound, and shows facial expressions responding to exter- nal stimuli. However, these reactions are probably preprogrammed and have a subcortical nonconscious origin. Furthermore, the fetus is almost continuously asleep and unconscious partially due to endog- enous sedation. Conversely, the newborn infant can be awake, exhibit sensory awareness, and process memorized mental representations. It is also able to differentiate between self and nonself touch, express emotions, and show signs of shared feelings. Yet, it is unreflective, present oriented, and makes little reference to concept of him/herself. Newborn infants display features characteristic of what may be referred to as basic consciousness and they still have to undergo considerable maturation to reach the level of adult consciousness. The preterm infant, ex utero, may open its eyes and establish minimal eye contact with its mother. It also shows avoidance reactions to harmful stimuli. However, the thalamocortical connections are not yet fully established, which is why it can only reach a minimal level of consciousness

Fluctations and noise in time-resolved light scattering experiments : measuring temporally heterogeneous dynamics

We use Time Resolved Correlation (TRC), a recently introduced light scattering method, to study the dynamics of a variety of jammed, or glassy, soft materials. The output of a TRC experiment is cI(t,tau), the time series of the degree of correlation between the speckle patterns generated by the light scattered at time t and t+tau. We characterize the fluctuations of cI by calculating their Probability Density Function, their variance as a function of the lag tau, and their time autocorrelation function. The comparison between these quantities for a Brownian sample and for jammed materials indicate unambiguously that the slow dynamics measured in soft glasses is temporally heterogeneous. The analogies with recent experimental, numerical and theoretical work on temporal heterogeneity in the glassy dynamics are briefly discussed.Comment: date de la fin de redaction : 06/09/200

The development and implementation of an effective mentoring programme to improve job satisfaction among beginner teachers at primary schools in the Mpumalanga Province of South Africa

Teachers leaving the profession is an ongoing problem; fewer teachers enter the profession each year and the number of teachers leaving the profession has increased. Many teachers listed job satisfaction as a reason for leaving the education profession, whilst citing the lack of mentoring as a cause of job dissatisfaction. Mentoring is known as the planned paring of a more experienced person with a lesser individual to help with the professional development of that individual and reduce teacher turnover. The aim of the study is to explore the impact of an effective mentoring programme at primary schools by developing and implementing such a mentoring programme to support and improve job satisfaction among beginner teachers in the province of Mpumalanga entering the profession for the first time. The following quantitative techniques were used during this study: document analysis and Likert-scale questionnaires, completed by 1 000 male and female teachers (principals, deputy principals, heads of departments, teachers and student teachers) from different races and cultures (20 teachers per school) from 50 randomly selected rural primary schools, private primary schools and Quintile 4 and 5 primary schools in the province of Mpumalanga. The analysis of data enabled me to identify a series of factors that were utilised to develop a mentoring programme that school management can implement in their schools to help beginner teachers to cope in their new work environment in order to improve job satisfaction and improve teacher retention. The factors identified include: aspects of job satisfaction that support leaners in achieving their goals; aspects of school management; the contribution of mentoring programme on the job satisfaction of beginner teachers; the responsibility of a mentor in developing a mentoring programme; the responsibility of a mentee in developing a mentoring programme; the responsibility of schools in developing a mentoring programme and characteristics that should be demonstrated by a mentor. From the data gathered, a mentoring programme was developed, namely the Hugo mentoring model. This model outlined the roles and responsibilities of mentors, mentees and school management throughout the mentoring process. The model also provided steps that should be taken into consideration when organising meetings between mentors and mentees.Educational StudiesD. Ed

Periodic asymptotic dynamics of the measure solutions to an equal mitosis equation

We prove, in the framework of measure solutions, that the equal mito-sis equation present persistent asymptotic oscillations. To do so we adopt a duality approach, which is also well suited for proving the well-posedness when the division rate is unbounded. The main difficulty for characterizing the asymptotic behavior is to define the projection onto the subspace of periodic (rescaled) solutions. We achieve this by using the generalized relative entropy structure of the dual problem

Abstract machines for dialogue games

The notion of abstract Boehm tree has arisen as an operationally-oriented distillation of works on game semantics, and has been investigated in two papers. This paper revisits the notion, providing more syntactic support and more examples (like call-by-value evaluation) illustrating the generality of the underlying computing device. Precise correspondences between various formulations of the evaluation mechanism of abstract Boehm trees are established