in modern decentralised health systems, district and local managers are increasingly responsible for financing, managing, and delivering healthcare. however, their lack of adequate skills and competencies are a critical barrier to improved performance of health systems. given the financial and human resource, constraints of relying on traditional face-to-face training to upskill a large and dis...

inventory control is one of the most important issues in supply chain management. in this paper, a three-echelon production, distribution, inventory system composed of one producer, a set of wholesalers and retailers is considered. costumers' demands can be approximated by a normal distribution and the inventory policy is a kind of continuous review (r, q). in this paper, a model based on ...

this paper introduces an indirect adaptive fuzzy sliding mode controller as a power system stabilizer for damping local and inter-area modes of oscillations of multi-machine power systems. this controller is designed based on the combination of sliding mode controller and the fuzzy logic systems. the fuzzy systems are used to approximate the unknown functions of power system model. generator sp...

in order to compare two hydroponic culture systems (countinuous and pumic) for producing two cultivars of greenhouse cucumber (2259 and delta star) an experiment was conducted in randomized complete block design with five replications. for mineral nutrition of plants murashige and skoog solution (m.s.) was used by concentration of leaves. the height of the stem, diameter of the first internode,...

Anonymous communication is a rapidly evolving area: it is needed for several privacy related services, such as anonymous electronic voting, payment or consultancy. Numerous techniques have been developed for the main goal: to deliver messages from senders to recipients in a manner that an adversary should find it difficult to identify who communicates with whom. In this paper we analyze two rep...

Discrete event dynamic systems may have extremely large state spaces. For their analysis, it is usual to relax the description by removing the integrality constraints. Applying this idea, continuous P/T systems are defined by allowing fractional firings of transitions, and thus the existence of non-discrete markings [4, 5, 1]. In this paper we compare the behaviors of discrete and continuous sy...

The method of information systems is extended from algebraic posets to continuous posets by taking a set of tokens with an ordering that is transitive and interpolative but not necessarily reflexive. This develops results of Raney on completely distributive lattices and of Hoofman on continuous Scott domains, and also generalizes Smyth’s “R-structures”. Various constructions on continuous poset...

the morphology of retinal photoreceptor layer was studied in continuous light-exposed and dark-adapteddomestic male cats (felis catus). the eyes of 12 healthy adult cats (4 in continuous light-exposed group, 4 in continuous dark-adapted group, and 4 in control group) were routinely fixed and studied by electron microscope. results showed that the general structure of photoreceptor layer in this...