Primal-dual algorithms have played an integral role in recent developments in approximation algorithms, and yet there has been little work on these algorithms in the context of LP relaxations that have been strengthened by the addition of more sophisticated valid inequalities. We introduce primal-dual schema based on the LP relaxations devised by Carr, Fleischer, Leung & Phillips for the minimu...

We describe a 17-year-old girl with haemolytic anaemia as presentation of Wilson disease. The diagnosis was based on the findings of < 20 mg/dl ceruloplasmin serum level, Kayser-Fleischer ring and Coombs-negative haemolytic anaemia. Genetic testing revealed the presence of the H1069Q heterozygous mutation. The patient was treated with Zinc acetate monotherapy, with good response, maintened afte...

INTRODUCTION Wilson disease is rarely reported among African children. This report describes the second case report of a Nigerian child with Wilson disease in three decades. CASE PRESENTATION An eight-year-old African boy presented with generalized oedema and ascites and proteinuria. Over the next three weeks he developed conjugated hyperbilirubinaemia, severe coagulopathy and prominent extra...

The O(α mt m2 W ) and O(ααs mt m2 W ) corrections to the partial decay width Γ(Z → b + b̄) are computed using the current algebra formulation of radiative corrections. This framework allows one to easily enforce the relevant Ward identity that greatly simplifies the calculations. As a result, the one-loop O(α mt m2 W ) contribution is computed through the investigation of only two convergent dia...

The phenomenon of CP violation and strategies for extracting the angles of the unitarity triangle are reviewed. Special emphasis is given to the B-meson system, as it plays an outstanding role to test the Standard Model description of CP violation at future experimental B-physics facilities. Both general aspects and recent developments are discussed. It is pointed out that combined branching ra...

Morphological productivity (roughly: the readiness with which a word formation process forms new words) has long been one of the central mysteries of morphology. There are many detailed qualitative descriptions of word formation processes that list the restrictions for the possible bases for an affix (like the restriction that -able attaches to verbs in English) or the restrictions on a given c...

(online suppl. video, www.karger.com/ doi/10.1159/000102169). Sensory examination showed hypesthesia of the right hand, most likely corresponding to segments C7 and C8. The muscle tone was normal at rest. The deep tendon reflexes in both extremities were symmetric and normoactive. Slit-lamp examination excluded Kayser-Fleischer rings. An initial MRI scan of the brain and cervical spine showed f...

In all mass cases needed for quark and gluon self-energies, the two-loop master diagram is expanded at large and small q, in d dimensions, using identities derived from integration by parts. Expansions are given, in terms of hypergeometric series, for all gluon diagrams and for all but one of the quark diagrams; expansions of the latter are obtained from differential equations. Padé approximant...

We present a patient with chronic postmenopausal estrogen intake with presence of Kayser-Fleischer ring in the cornea and Alzheimer's disease and discuss the pathophysiological mechanisms of estrogen intake and copper accumulation in various tissues, including the central nervous system. Sonography was compatible with copper accumulation in the basal ganglia, but the patient showed no clinical ...

Smart grid technologies (SGT) comprise technologies from various domains, among others information systems (IS). IS can contribute decisively to upgrade the nowadays electromechanically controlled energy systems to electronically controlled networks (Watson, Boudreau and Chen 2010). However, to date the organizational adoption of SGT is rather limited. Thus, we developed a model based upon the ...