Journal of Physical Sciences
ABSTRACT In this paper, the relative efficiency of (i) means per unit estimator, (ii) classical ratio and product estimators, (iii) Sr ivenkataramana and Srinath alternative ratio and product estimators(1976) and (iv) newly proposed alternative ratio and product estimators were examined and the conditions under which each of these estimators are preferred over the others were […]
ABSTRACT The objective of this investigation was to assess the effect of exercise on serum electrolytes after a short term and a prolonged exercise in non-endurance untrained males aged between 18 – 30 yrs. Blood samples for Na+, K+, Cl- and HC03- analysis were taken before and after two exercise bouts. The study showed significant […]
ABSTRACT We studied 30 women taking oral contraceptive and 40 women taking no hormones, to determine the relation of plasma lipoproteins concentrations and atherogenic risk predictor indices to low oestrogen/progestin oral contraceptive (OCs) formulation. Premenopausal women, using oral contraceptive containing a relatively low dose of oestrogen and low dose of progestin (Duofem cycle) had a […]
ABSTRACT In this paper we give a systematic analysis of the power supply problems which may cause damages to IT equipment and projects. The problems come from several sources. Earthing facilitates the interconnection of several equipment, plays a regulatory role in setting base voltages, and is to connect parts of the electrical system to provide […]
ABSTRACT Several research efforts as well as developments have chosen queueing theories as a vital tool in the measurement and analysis of performance evaluation of system components that arrives at different time intervals, waiting to be serviced by a server. In this paper, we considered the important issue of planning the queueing system to minimize […]
ABSTRACT The semantic web provides the infrastructure that enables the semantic interoperability of web services. Semantic web services, which are services that are self-described and amenable to automated discovery, composition and invocation, will form the next generation of the Web. These services can be represented using ontology and rendered for use in e-commerce vis-a-vis m-commerce. […]
ABSTRACT In the course of software development, people either assume that everything will go as planned or due to the nature of software development, they make sketchy plans. These two views can lead to situations which threaten the development of software projects. Risk management is being accepted as the best practice for risk reduction and […]
ABSTRACT The stability problem for a class of retarded delay differential systems is considered in this paper. The time delay (h) was assumed a variable and the asymptotic criteria was contrived. Test was formulated in the form of a scalar positive matrix functional and its application to numerical problems confirmed the suitability of this test. […]
ABSTRACT Mapping magnetic basement is an important tool in oil and gas exploration. Aeromagnetic data can define the This work presents a detailed analysis of security in the context of information systems. The role that the network plays in the overall security of the information system is discussed; as well as the gradual shift of […]
ABSTRACT Mapping magnetic basement is an important tool in oil and gas exploration. Aeromagnetic data can define the basement over a large basin area because of the significant magnetic contrast between the crystalline basement rocks and the relatively non magnetic sedimentary cover rocks. Nine Aeromagnetic maps on a scale 1:100,000, covering the Lower Benue Trough, […]
