97 research outputs found
Analysis of fragment yield ratios in the nuclear phase transition
The critical phenomena of the liquid-gas phase transition has been
investigated in the reactions 78,86Kr+58,64Ni at beam energy of 35 MeV/nucleon
using the Landau free energy approach with isospin asymmetry as an order
parameter. Fits to the free energy of fragments showed three minima suggesting
the system to be in the regime of a first order phase transition. The relation
m =-{\partial}F/{\partial}H, which defines the order parameter and its
conjugate field H, has been experimentally verified from the linear dependence
of the mirror nuclei yield ratio data, on the isospin asymmetry of the source.
The slope parameter, which is a measure of the distance from a critical
temperature, showed a systematic decrease with increasing excitation energy of
the source. Within the framework of the Landau free energy approach, isoscaling
provided similar results as obtained from the analysis of mirror nuclei yield
ratio data. We show that the external field is primarily related to the minimum
of the free energy, which implies a modification of the source concentration
\Delta used in isospin studies
Analysis of fragment yield ratios in the nuclear phase transition
The critical phenomena of the liquid-gas phase transition has been
investigated in the reactions 78,86Kr+58,64Ni at beam energy of 35 MeV/nucleon
using the Landau free energy approach with isospin asymmetry as an order
parameter. Fits to the free energy of fragments showed three minima suggesting
the system to be in the regime of a first order phase transition. The relation
m =-{\partial}F/{\partial}H, which defines the order parameter and its
conjugate field H, has been experimentally verified from the linear dependence
of the mirror nuclei yield ratio data, on the isospin asymmetry of the source.
The slope parameter, which is a measure of the distance from a critical
temperature, showed a systematic decrease with increasing excitation energy of
the source. Within the framework of the Landau free energy approach, isoscaling
provided similar results as obtained from the analysis of mirror nuclei yield
ratio data. We show that the external field is primarily related to the minimum
of the free energy, which implies a modification of the source concentration
\Delta used in isospin studies
Knowledge management related training strategies in Kingdom of Saudi Arabia construction industry: An empirical study
The growing popularity of knowledge management (KM) in the construction industry
has, unfortunately, not been matched by parallel empirical research in training and benefits of
KM for construction industry in the Kingdom of Saudi Arabia (KSA). This paper discusses the
KM related training strategies implemented in the Kingdom of Saudi Arabia construction
industry. Given the relatively new and unexplored nature of the research problem, qualitative
research method was adopted to collect and analyse data. Results are based on the analysis of
data from 46 professionals from KSA construction organisations. This paper concludes that
training interventions are a complex and context-embedded activity. The current study results
suggests that for effective implementation of KM strategies, there is an urgent need for KSA
construction industry to develop and deploy appropriate KM related management training
programmes. Leadership plays an important role in breaking down barriers in achieving KM
strategies. The practical implication of this research is that the KM should not only focus on the
specific knowledge to be captured, shared, mapped and transferred between individuals but
should also address strategic concerns at group and organisational levels
- …