Filtyp
We describe computer simulation of a number of associative models of classical conditioning in an attempt to assess the strengths and weaknesses of each model. The behavior of the Sutton-Barto model, the TD model, the Klopf model, the Balkenius model and the Schmajuk-DiCarlo model are investigated in a number of simple learning situations. All models are shown to have problems explaining some of t
By counting the number of upcrossings of the mean level by a stationary Gaussian process one can estimate the mean frequency of the process. If the mean level is unknown and estimated from the observed mean level, then this crossing estimator is more or less biased, depending on the length of the observation interval. It is shown that if the interval is at least two mean wavelengths, then the bias
Carotid endarterectomy (CEA) is a standardized surgical procedure and is the third most common vascular surgical procedure in Sweden. To improve the quality of pre- and postoperative care for patients undergoing elective CEA, a standardized care plan (SCP) was developed and implemented during Spring of 2007 at a vascular clinic in Sweden. In order to spread light on obstacles and possibilities in
ABSTRACT: BACKGROUND: Previous animal studies have shown that Curcuma (C.) longa lowers plasma glucose. C. longa may thus be a promising ingredient in functional foods aimed at preventing type 2 diabetes. The purpose of the study is to study the effect of C. longa on postprandial plasma glucose, insulin levels and glycemic index (GI) in healthy subjects. METHODS: Fourteen healthy subjects were ass
Analysis of Ingmar Bergman's play Sista skriket (The Last Gasp) about the film director Georg af Klercker.
Den kanske allra bästa radiomottagaren under andra världskriget heter Köln E52, figur 1, och konstruerades och byggdes av Telefunken. Den har med åren blivit en raritet eftersom kriget, tillsammans med tidens tand, reducerat antalet mottagare betydlig. Det var därför med stor glädje och förvåning som en sådan apparat nyligen återupptäcktes på Lunds Tekniska Högskola (LTH).
Although the challenges posed by convergence are many, incumbent security integrators and VARs who get it right have everything to gain. Although they might not be able to acquire the leading-edge capabilities of some of their IT competitors, the integrator’s firm grasp of all aspects of traditional security, their unique ability to integrate old with new technology, and perhaps most importantly,
Neurons derived from neural stem cells could potentially be used for cell therapy in neurodegenerative disorders, such as Parkinson's disease. To achieve controlled differentiation of neural stem cells, we expressed transcription factors involved in the development of midbrain dopaminergic neurons in rat and human neural progenitors. Using retroviral-mediated transgene delivery, we overexpressed L
Pancreatic neuroendocrine tumors are typically solid neoplasms but in very rare cases present as cystic lesions. The diagnosis of cystic tumors in the pancreas is extremely difficult and the use of endoscopic ultrasound and fine-needle aspiration might be helpful in the work-up of patients with cystic neuroendocrine tumors in the pancreas.
