Several standard processes for searching minima of potential functions, such as thermodynamical strategies (simulated annealing) and biologically motivated self-reproduction strategies, are reduced to Schrr odinger eigenvalue problems. The properties of the landscape and the dynamics of the optimization are encoded in the spectrum of the Hamiltonian, which is diierent in both cases. We discuss ...

BACKGROUND Severe acute pancreatitis (SAP) is still related to high mortality rates. This study evaluated the various surgical strategies for treatment of suspected infected necroziting pancreatitis (INP). METHODS This retrospective study included 212 patients with SAP and INP, who had surgical treatment during the period between January 2000 - December 2012 at the Ist Surgical Clinic. Surgic...

We address the issue of constructing continuous instantons representing the pair creation of black holes in a cosmological context. The recent attempt at constructing such solutions using virtual domain walls is reviewed first. We then explore the existence of continous instantons in higher curavature gravity theories where the Lagrangian is polynomial in the Ricci scalar. Lastly, we study cont...

 Abstract Background and objective: Pain relief during labour is an important determinant of a women’s birth experience. There are numerous pain relief techniques which can be used either with or without pain medication. The aim of our study was to compare the effect of remifentanil alone and its effect in pain relief while using with ketamine during labour. Methods: After obtaining informed co...

In this paper, the nonlinear optical response of thermo-optic origin exhibited by series of Fuchsin dyes at low continous wave laser powers is studied in liquid and solid media and optical limiter action based on nonlinear refraction isdemonstrated.

This paper shows how can be estimated the value of an option if we assume the doubleHeston model on a message-based architecture. For path trace simulation we will discretize continous model with an Euler division of time.

background: migraine is a prevalent disease which is classified into two groups of migraine with aura and without aura. eighteen percent of women and 6.5 percent of men in united states have migraine headache. migraine headache is prevalent in all age groups but it usually subsides in adults above fifty. migraine has many risk factors such as stress, light, tiredness, special foods and beverage...