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Rubén Avila García,박병주,장병윤 한국인터넷방송통신학회 2019 International Journal of Internet, Broadcasting an Vol.11 No.4
The purpose of this research is to examine the relationship between corporate social responsibility (CSR), green supply chain management (GSCM) practices, and business performances. After reviewing the extensive literature, we developed a research model including five constructs: CSR, GSCM practices, environmental, economic and operational performances. We conducted the statistical analyses based on the primary data collected from a survey questionnaire, responded by 93 different company managers in the Republic of Guatemala. Furthermore, we utilized structural equation modeling to analyze the data and to test the hypotheses. The results of the analyses showed that there is a significant influence of CSR on the adoption of GSCM practices. It was also found that GSCM practices have a significant influence on environmental, economic and operational performances. In addition, environmental performance has a significant impact on economic and operational performance. Finally, GSCM has a mediating role on the relationship between CSR and environmental and economic performance, but not with operational performance.
Electronic transport study of PbSe pellets prepared from self-assembled 2D-PbSe nanostructures
E. Díaz-Torres,A. Flores-Conde,A. Avila-García,M. Ortega-Lopez 한국물리학회 2018 Current Applied Physics Vol.18 No.2
This work presents a study of the electronic transport properties of PbSe pellets fabricated starting of PbSe nanostructures that exhibited a flake-like 2D morphology, which were synthesized by the coprecipitation method. Seebeck coefficient measurements revealed that the PbSe sample displays ntype conductivity, a maximum Seebeck coefficient of 512.6 mV/K around 380 K, and that the carriers scattering is dominated by acoustic and optical phonons. The Fermi level dependence on the temperature and the band gap energy are also reported. Interestingly, size-dependent confinement effects due probably to the reminiscent PbSe 2D character could be evidenced.