Recommender systems have explored a range of implicit feedback approaches to capture users’ current interests and preferences without intervention of users’ work. However, the problem of implicit feedback elicit negative feedback, because users mainly target information they want. Therefore, there have been few studies to test how effective negative implicit feedback is to personalize informati...

Purpose The current study examined Israeli researchers from various disciplines concerning their perceptions, attitudes and awareness of scientific publications in open access (OA) journals repositories. Design/methodology/approach A survey instrument was developed distributed to 202 universities, colleges research institutions. used the united theory acceptance use technology (UTAUT) model as ...

Background: Breastmilk only is enough for milestone of a child because it contains all necessary nutrients. Because its benefits World Health Organization recommends that lactating mothers must give their infants breastmilk six months and continue up to two years with appropriate complementary food. Despite breastfeeding not well practiced in developing countries, South Africa included. Objecti...

It is motivated by an apparent paradox boys seem to participate more both in the labour market and in school than girls. This pattern breaks down once we take the household work done by girls into account. In this paper, we find that there is symmetry between the factors that make women’s contribution to the household economy less ‘visible’ than men’s and the factors that reduce girl’s involvem...

One of the factors responsible for tertiary structural stabilization in proteins is the presence of the hydrophobic core—a result of hydrophobic interactions within the protein body. In some proteins (especially extracellular ones) additional stabilization is provided by covalent bonds between selected Cys residues, commonly referred to as disulfide bonds. The mutual interplay of both factors a...