10,009 research outputs found
Building a Computer-Based Expert System for Malaria Environmental Diagnosis: An Alternative Malaria Control Strategy
As a predominant environmental health problem in Africa, malaria constitutes a great threat to the existence of many communities. The harmful effects of malaria parasites to the
human body cannot be underestimated. In this paper, an expert system for malaria environmental diagnosis was presented for providing decision support to malaria researchers, institutes and other healthcare practitioners in malaria endemic regions of the world. The motivation behind this work was due to the insufficient malaria control measures in existence and the need to provide novel approaches towards malaria control. A malaria expert system
prototype was developed that involved a knowledge component, the application component (AC), the database system component (DC), the Graphical User Interface (GUI) component and the User component (UC). The User interface component was implemented using the Java Programming language. The application component was implemented using the Java Expert System Shell (JESS) and the Java IDE of Netbeans while the database component was implemented using SQL Server
Nonlocality is transitive
We show a transitivity property of nonlocal correlations: There exist
tripartite nonsignaling correlations of which the bipartite marginals between A
and B as well as B and C are nonlocal and any tripartite nonsignaling system
between A, B, and C consistent with them must be such that the bipartite
marginal between A and C is also nonlocal. This property represents a step
towards ruling out certain alternative models for the explanation of quantum
correlations such as hidden communication at finite speed. Whereas it is not
possible to rule out this model experimentally, it is the goal of our approach
to demonstrate this explanation to be logically inconsistent: either the
communication cannot remain hidden, or its speed has to be infinite. The
existence of a three-party system that is pairwise nonlocal is of independent
interest in the light of the monogamy property of nonlocality.Comment: 4 pages, 2 figures, v2: published versio
On the large-Q^2 behavior of the pion transition form factor
We study the transition of non-perturbative to perturbative QCD in situations
with possible violations of scaling limits. To this end we consider the singly-
and doubly-virtual pion transition form factor at all
momentum scales of symmetric and asymmetric photon momenta within the
Dyson-Schwinger/Bethe-Salpeter approach. For the doubly virtual form factor we
find good agreement with perturbative asymptotic scaling laws. For the
singly-virtual form factor our results agree with the Belle data. At very large
off-shell photon momenta we identify a mechanism that introduces quantitative
modifications to Efremov-Radyushkin-Brodsky-Lepage scaling.Comment: 5 pages, 7 figures, v3:contents revised, version published in PL
Community-focused strategies.
This article introduces the notion of community-focused strategies to refer to the set of actions, activities and policies that firms undertake to establish connections or relational links with one or more target communities of (potential) customers. Drawing on social identity theory and strategy research, this study begins with a proposed taxonomy of different community-focused strategies. Then it illustrates how such strategies contribute to the creation of competitive advantage and explores their boundary conditions. Finally, the authors offer implications for theory development and practice, as well as suggestions for further research.Communities; Competitive advantage; Firm strategies; Identity;
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