As the information age arrives and the internet network has very popular day by day. Internet network has already become quite important activity in people's daily life. The research shows that there are more than 650 million nonrepeating users shop on line, including shopping center websites and sub channel. According to network auction and relevant literature of network marketing, the behavio...

Recently, there has been a lot of interest in studying the global attractivity, the boundedness character, and the periodicity nature of nonlinear difference equations see for example, [1– 22]. The study of the nonlinear rational difference equations of a higher order is quite challenging and rewarding, and the results about these equations offer prototypes towards the development of the basic ...

The possible connections between the dynamic behavior of a system and Turing universality in terms of the ability of the system to (effectively) transmit and manipulate information are explored. Some arguments will be provided using a defined compression-based transition coefficient, which quantifies the sensitivity of a system to being programmed. In the same spirit, a list of conjectures conc...

Situation awareness and geographic information systems in dynamic spatial systems such as road traffic management (RTM) aim to detect and predict critical situations on the basis of relations between entities. Such relations are described by qualitative calculi, each of them focusing on a certain aspect (e. g., topology). Since these calculi are defined isolated from each other, dependencies be...

Multiple model approaches to the control of complex dynamical systems are attractive because the local models can be simple and intuitive, and global behavior can be analyzed in terms of transitions among local operating regions. In this paper, we argue that the use of qualitative models further improves the strengths of the multiple model approach by allowing each local model to describe a lar...

Whereas depressed mood, hopelessness, and previous suicide attempts have been well established as risk factors for suicidal behavior in schizophrenia (Siris, 2001), the role of psychotic symptoms and their quality has remainedmore controversial (Hawton et al., 2005; Hor and Taylor, 2010). Existing studies have focused on quantitative aspects of psychotic symptoms, to the exclusion of qualitativ...

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As noticed in some recent work, describing and diagnosing temporal behavior and faults is an important, but complex task. In this paper we discuss a new approach based on a subset of Allen's interval algebra, which extends previous work by allowing both the representation of qualitative temporal behavior (including symptoms over time) and the diagnosis of these systems.

A cellular automata based qualitative simulation of group behavior (referred hitherto as 'loyalty to group') will be presented by integrating QSIM (Qualitative SIMulation) and CA (Cellular Automata) modeling. First, we provide a breakdown of the structure of a group and offer an analysis of how this structure impacts behavior. The characteristics and impact had by anomalies within a group and b...

BACKGROUND Infertility makes an essential challenge to the sexual life of couples, especially infertile women. When pregnancy does not happen, infertile women think that sexual intercourse is not fruitful and sexual desire became reduce gradually. Infertile women progressively forget that their sexual relationship is also a response to their natural need. OBJECTIVE This qualitative study was ...