Interconnecting bilayer networks

A typical complex system should be described by a supernetwork or a network of networks, in which the networks are coupled to some other networks. As the first step to understanding the complex systems on such more systematic level, scientists studied interdependent multilayer networks. In this letter, we introduce a new kind of interdependent multilayer networks, i.e., interconnecting networks, for which the component networks are coupled each other by sharing some common nodes. Based on the empirical investigations, we revealed a common feature of such interconnecting networks, namely, the networks with smaller averaged topological differences of the interconnecting nodes tend to share more nodes. A very simple node sharing mechanism is proposed to analytically explain the observed feature of the interconnecting networks.Comment: 9 page

Organisational context and citizenship behaviour: exploring the moderating effects of role ambiguity

The purpose of this paper is to examine the effect of organisational context on the organisational citizenship behaviour. The study also aimed at finding out the moderating effect of the role ambiguity on the relationship between organisational context (i.e. structure) and the organisational citizenship behaviour. Data from 280 respondents were used in the statistical analysis. Covariance-Based Structural Equation Modelling was used to test the hypotheses. The study revealed that structure has a significant positive effect on organisational citizenship behaviour. The interaction of organisational structure and role ambiguity has a significant positive effect on organisational citizenship behaviour. Statistical analysis confirmed that role ambiguity is a significant moderator of the relationship between organisational structure and organisational citizenship behaviour

Effects Of Individual Characteristics And Organizational Context On Superiors' Use Of Conflict Styles And Subordinates' Satisfaction With Supervision

Data from 139 respondents from major industries showed that subordinates were more satisfied with their superiors' supervision through the exercise of integrating, compromising and obliging styles. On the contrary, subordinates who perceived their superiors as primarily using dominating and avoiding styles viewed them as incompetent in supervision and thus lowering their level of satisfaction with supervision. Among the conflict handling styles, integrating was most correlated with organic structure. The organic structure was found to be positively correlated with subordinates' satisfaction. These results implied that organic structure can be a potent force in maintaining organizational stability. The exercise of dominating style was found to be only marginally correlated with superior's age. Superior rank in lower hierarchy level was found to have a negative impact, albeit marginally on the exercise of dominating style. The present results also seemed to suggest that subordinates tend to be less satisfied with superiors with wider span of control

Growth and Remodelling of Right Ventricle Under Pulmonary Arterial Hypertension

Pulmonary arterial hypertension (PAH) is a fatal and rapidly progressive disease, and right ventricular failure is the main cause of death in patients with PAH. This study aims to determine the mechanical cues that can trigger the growth and remodelling of the heart. To this end, two bi-ventricular models of a control rat heart and a diseased rat heart with PAH are reconstructed, respectively, and then the growth amount is estimated by warping the PAH heart to the control heart. Finally, correlation analysis between mechanical cues (stress and strain) and growth tensors demonstrates principal strain may be a triggering cue for myocardial growth under PAH

Using LDDMM and a kinematic cardiac growth model to quantify growth and remodelling in rat hearts under PAH

Pulmonary arterial hypertension (PAH) is a rapidly progressive and fatal disease, with right ventricular failure being the primary cause of death in patients with PAH. This study aims to determine the mechanical stimuli that may initiate heart growth and remodelling (G&R). To achieve this, two bi-ventricular models were constructed: one for a control rat heart and another for a rat heart with PAH. The growth of the diseased heart was estimated by warping it to the control heart using an improved large deformation diffeomorphic metric mapping (LDDMM) framework. Correlation analysis was then performed between mechanical cues (stress and strain) and growth tensors, which revealed that principal strains may serve as a triggering stimulus for myocardial growth and remodelling under PAH. The growth tensors, estimated from in vivo images, could explain 84.3% of the observed geometrical changes in the diseased heart with PAH by using a kinematic cardiac growth model. Our approach has the potential to quantify G&R using sparse in vivo images and to provide insights into the underlying mechanism of triggering right heart failure from a biomechanical perspective