In this paper we consider the bifurcations that occur at the trivial equilibrium of a general class of nonlinear Leslie matrix models for the dynamics of a structured population in which only the oldest class is reproductive. Using the inherent net reproductive number n as a parameter, we show that a global branch of positive equilibria bifurcates from the trivial equilibrium at n = 1 despite t...

Manifold learning is an effective dimensional reduction technique for face feature extraction, which, generally speaking, tends to preserve the local neighborhood structures of given samples. However, neighbors of a sample often comprise more inter-class data than intra-class data, which is an undesirable effect for classification. In this paper, we address this problem by proposing a subclass-...

Purpose: A randomized, single-blind, prospective clinical trial was performed to evaluate the effects of plaque control by inter-radicular brushing on class II furcation of lower molars. Methods: Twenty-two patients presenting with at least one class II furcation with horizontal probing depth (PD) ≥ 4 mm on the buccal aspect of lower molars were recruited. Each patient was randomly assigned to ...

Analyses of social mobility remains divided between structuralist (e.g. class structural) and individualist (e.g. status attainment) perspectives. Primarily adopted by sociologists, the former focus on the opportunity structure in which social mobility operates, while the latter, adopted by economists, on the individual attributes associated with mobility. It is becoming increasingly clear howe...

abstract background and aim: cone beam computed tomography (cbct) produces high-quality data in periodontal diagnosis and treatment planning. the aim of this study was to compare the accuracy of cbct with intraoral digital and conventional radiography in the measurement of periodontal bone defects.  methods and materials: in this diagnostic research, two hundred and eighteen artificial osseous ...

The Simple Concurrent Object-Oriented Programming (SCOOP) mechanism introduces inter-object concurrency to the Eiffel language, via addition of one new keyword, separate. We describe a general tool that takes a Eiffel program that uses the separate keyword and translates it into an Eiffel multi-threaded program that uses the Eiffel T HREAD class. The resulting code is thereafter compatible with...

In the paper we propose an approach for the construction of meta-CASE workbenches. The approach is based on the technology of visual language generation systems and on UML meta modeling. Visual modeling environments are generated starting from UML class diagrams specifying abstract syntax of the underlying visual language. The meta-CASE generates a workbench by integrating a set of visual model...

The object recognition problem has challenged the computer vision community for long time due to the huge change in the scale, occlusion and lighting conditions which have a great effect on the appearance of the objects. The problem of generic object recognition (GOR) has the previously mentioned difficulties in addition to the intra-class and inter-class variability problems. Despite the diffi...

Interconnection networks are constructed to provide inter-process communication. These Networks are compared on the basis of Fault tolerance, Reliability, Path length and cost effectiveness. An irregular class of Fault Tolerant Multistage Interconnection Network (MIN) called Modified Four Double Tree Network-2 (MFDOT-2) is proposed.MFDOT-2 is constructed on the basis of FDOT-2 [1]. The Reliabil...

The cross-sectional area (CSA) of the ulnar nerve is thought to be indicative of ulnar nerve entrapment. The purpose of the study was to determine reproducibility of ultrasonographic measurements of CSA of the ulnar nerve at the cubital tunnel in healthy adults. Two sonographers tested 69 participants using a standardized protocol. The inter-rater reliability intra-class correlation coefficient...