Manpower information

A description of the NAL nominal roll database (listing basic information about NAL employees) created using the Ingres relational database software. Using this database it is possible to provide a wide variety of reports about NAL staff, respond to a wide assortment of queries and undertake elementary statistical analysis to tabulate (and pictorially depict) the average age of NAL scientists, the future retirement pattern of NAL employees etc

Thermal Radiation Effect on Mixed Convection Flow Over a Vertical Stretching Sheet Embedded in a Porous Medium with Suction (Injection)

AbstractThe problem of steady laminar mixed convection flow of an incompressible viscous fluid over a vertical stretching sheet with variable wall temperature and concentration in the presence of porous medium and thermal radiation is examined. The governing boundary layer equations are transformed into a non-dimensional form by a group of non-similar transformations. The resulting coupled non-linear partial differential equations have been solved numerically by using implicit finite difference scheme in combination with the quasi-linearization technique. The effects of various parameters on the velocity and temperature profiles as well as skin friction and heat transfer coefficients are presented. The results are found to be in good agreement with the existing solutions in literature

Efficient computation of the Shapley value for game-theoretic network centrality

The Shapley value—probably the most important normative payoff division scheme in coalitional games—has recently been advocated as a useful measure of centrality in networks. However, although this approach has a variety of real-world applications (including social and organisational networks, biological networks and communication networks), its computational properties have not been widely studied. To date, the only practicable approach to compute Shapley value-based centrality has been via Monte Carlo simulations which are computationally expensive and not guaranteed to give an exact answer. Against this background, this paper presents the first study of the computational aspects of the Shapley value for network centralities. Specifically, we develop exact analytical formulae for Shapley value-based centrality in both weighted and unweighted networks and develop efficient (polynomial time) and exact algorithms based on them. We empirically evaluate these algorithms on two real-life examples (an infrastructure network representing the topology of the Western States Power Grid and a collaboration network from the field of astrophysics) and demonstrate that they deliver significant speedups over the Monte Carlo approach. Fo

The Impact of Security and Privacy Concerns on Home Internet Use by Parents and Children

Internet users’ choices about their extent and types of usage and the types of precautions they take for their online security and privacy is an increasingly important research topic. As business and personal Internet usage grows so do concerns about misuse and abuse leading to financial loss or breaches of privacy. For the younger user, the risk of sexual exploitation from misuse is a particular concern. Effective mitigation of these risks is critical to the full achievement of the benefits the Internet can offer in e-commerce, e-learning, business and social communication. The interrelations between comfort with sensitive Internet use, security measures taken, and the types of Internet usage among home Internet users has not been extensively examined. We plan to empirically examine these interactions and to then extend our analysis to examine the impact of parental attitudes, usage, and controls on Internet usage

Resilience in Child Sexual Abuse: Role of Protective Factors

Child sexual abuse is a major public health problem with significant psychosocial consequences (Afifi & Macmillan, 2011). All child sexual abuse victims do not depict adverse consequences in later life. The variability of impact in a potentially traumatic experience like child sexual abuse is explained by the construct of resilience and it being the outcome of the influence of certain protective factors (Henley, 2010). The present article conceptualizes resilience in the area of child sexual abuse where individual, familial and community level factors are identified as predictors to fostering resilience. Formulation and development of effective interventions to reduce the impairment following child sexual abuse and to foster resilience in children, adolescents and survivors are recommended

Studies on the influence of moisture and specific gravity on the strength properties of mango wood (Mangifera indica)

Influence of moisture and specific gravity on the strength of mango wood is discussed. The co-efficient of correlation between specific gravity and breaking strength was found to be non-significant. The relation of strength and moisture was found to be highly significant. The mean strength values indicated a reduction in strength when the moisture increased from 8.5 to 18.8%. However no appreciable difference in strength values could be observed when moisture increased above 37%. The strength-moisture relationship is a straight line, passing approximately through the fibre saturation point. By using the exponential formula, the breaking strength corresponding to any moisture level between zero and fibre saturation can be determined

Elastomeric Antifouling-Antiboring Coating - A New Approach

Under favourable conditions, certain objects on immersion in seawater are subject to both boring and fouling. In this communication, the development of coating which would ward off both foulers and borers simultaneously is presented