Abstract Separation or “perfect prediction” is a common problem in discrete choice models that, practice, leads to inflated point estimates and standard errors. Standard statistical packages do not provide clear advice on how correct these problems. Furthermore, separation can go completely undiagnosed fitting advanced that optimize user-supplied log-likelihood rather than relying pre-programme...

AIM To compare the outcomes of surgical periodontal therapy with and without initial scaling and root planing. METHODS Twenty-four patients with severe chronic periodontitis were enrolled in this pilot, randomized controlled clinical trial. Patients were equally allocated into two treatment groups: Control group was treated with scaling and root planing, re-evaluation, followed by Modified Wi...

Smart environments aim for the realisation of user assistance in an autonomously, pro-active and non-distracting manner. Therefore smart environment infrastructures needs to be able to identify users needs (intention recognition) and to be able to plan an appropriate assisting strategy (strategy synthesis). A challenge when trying to infer the users intention is the complexity of smart environm...

Several production environments require simultaneous planing of sizing and scheduling of sequences of production lots. Integration of sequencing decisions in lotsizing and scheduling problems has received an increased attention from the research community due to its inherent applicability to real world problems. A two-dimensional classification framework is proposed to survey and classify the m...

One of the most efficient methods of reducing drag on planing craft is the use of transverse step on the bottom of a hull. Applying steps on the hull reduces the contact area with water and as a result, it reduces drag of the craft. Planing craft are able to have one or two transverse steps. In this paper, numerical hydrodynamic performance of the stepped planing craft and its step height effec...

The efficacy of scaling and root planing using various periodontal rotary instruments was examined. Eighty extracted human teeth with a history of periodontal disease were divided into four groups of 20 and subjected to one of the following procedures: Use of 1) a Root Burnisher, 2) a Perio Planing Bur (both rotating instruments for contra angle handpieces), 3) a Tooth Planing Bur (rotating ins...

IT IS BECOMING COMMONPLACE to state that a Western strategy that assumes or seeks to foster a bi-polar world is obsolescent. The four models upon which the combination of containment and deterrence which characterize the prevailing Western strategy, and upon which this strategy itself, draws, are increasingly viewed as inadequate. The two integrated camps, which the bi-polar balance-of-power co...

In the present paper, a mathematical model is used in order to predict the longitudinal distribution of dynamic pressure on planing hulls. The present model is based on the empirical equations resulted from multitude of experiments that have been carried out over the years on planing boats. These empirical equations are able to predict a longitudinal section of the pressure distribution. The ob...

This paper deals with the issue of strategic argumentation in the setting of Dung-style abstract argumentation theory. Such reasoning takes place through the use of opponent models—recursive representations of an agent’s knowledge and beliefs regarding the opponent’s knowledge. Using such models, we present three approaches to reasoning. The first directly utilises the opponent model to identif...