Synergy is a concept fraught with ambiguity about its sources and effects, perhaps as a consequence of of previous literature on the subject not distinguishing between these. In this paper, the sources of synergy are separated from the sources of sustainable competitive advantage in order to analyze the competitive implications of different types of synergies, and thus be able to answer the que...

conclusions optimization of medium composition and synergistic antimicrobial activity on the cyanobacteria could lead to production of effective antimicrobials. results c. leptolyngbya had antimicrobial activity individually and in synergy with antibiotics against gram-positive and gram-negative bacteria. the highest activity of the chloroform extract was on gram positive strains and its effect...

We study the structural properties of the neural network of the C.elegans (worm) from a directed graph point of view. The Google matrix analysis is used to characterize the neuron connectivity structure and node classifications are discussed and compared with physiological properties of the cells. Our results are obtained by a proper definition of neural directed network and subsequent eigenvec...

Sacroiliitis, inflammation of the sacroiliac joint (SIJ), is the hallmark of ankylosing spondylitis and spondyloarthritis (SpA) in general. The arsenal of recommended diagnostic modalities for imaging of the SIJ is scanty and, in practice, includes only conventional X-rays and magnetic resonance imaging (MRI). This review suggests that bone scintigraphy, particularly single-photon emission comp...

PurposeTo compare the diagnostic performance of texture analysis (TA) against visual qualitative assessment in differentiation spondyloarthritis (SpA) from degenerative changes sacroiliac joints (SIJ).MethodNinety patients referred for suspected inflammatory lower back pain rheumatology department were retrospectively included at our university hospital institution. MRI 3 T lumbar spine and SIJ...

A matrix S = (sij) ∈ R n×n is said to determine a transitional measure for a digraph Γ on n vertices if for all i, j, k ∈ {1, . . . , n}, the transition inequality sij sjk ≤ sik sjj holds and reduces to the equality (called the graph bottleneck identity) if and only if every path in Γ from i to k contains j. We show that every positive transitional measure produces a distance by means of a loga...