The recently developed idea of analyzing complex networks in terms of node displacement due to vibration (Estrada and Hatano, Chem Phys Lett 486:166–170, 2010a) is applied to fullerenes. The fact that the ramafullerenes (fullerenes of Ramanujan graphs) are limited to fullerenes with relatively small number of C atoms is explained from the point of view of the node displacement. The node displac...

As green building material, fly ash is advantageous to solving the question of environmental protection and energy conservation. In this paper, combined with the author’s research production, the latest development of studies and applications of activation techniques of fly ash is summed up, which is being looked forward to being useful to researchers and engineers. The latest researches show t...

Sequential Matching Estimation of Dynamic Causal Models This paper proposes sequential matching and inverse selection probability weighting to estimate dynamic causal effects. The sequential matching estimators extend simple, matching estimators based on propensity scores for static causal analysis that have been frequently applied in the evaluation literature. A Monte Carlo study shows that th...

Pollution Abatement and Control Expenditure in Romania: A Multilevel Analysis The transition process in Central and Eastern Europe was associated with growing environmental awareness. This paper analyses the determinants of Pollution Abatement and Control Expenditure (PACE) at plant level in the case of Romania using survey data and a Multilevel Regression Model (MRM). Our findings suggest that...

This paper considers the second-order properties of empirical likelihood (EL) for a parameter defined by moment restrictions, which is the inferential framework of the generalized method of moments. It is shown that the EL defined for this general framework still admits the delicate secondorder property of Bartlett correction. This represents a substantial extension of all the established cases...

This paper sheds light on what city leaders can do about climate change in the context of complex extra-territorial challenges they face. We created an original database those actions implemented by members C40 Cities Climate Leadership Group and investigated which boundary organizations, objects experiences (‘boundary cooperative arrangements’) be triggered to undertake leaders. Through a seco...