The concept of sustainability was first introduced a few decades ago, and it has gradually become the primary concern of many nations and firms around the world. Sustainability is a broad concept that encompasses three pillars, namely, economic, social, and environmental, represented as profit, people, and nature. It implies that firms can only sustainably develop if they grow without compromising the benefits of their stakeholders. Thus, this study aims to identify, through the participatory approach and the Delphi method, an appropriate set of sustainability indicators to strategically evaluate Hai Phong port's sustainable development achievements. The paper will critically review past studies on port sustainable development to find the most frequently used indicators for assessing port sustainability. These indicators vary because of the availability of data and the researcher's perceived level of importance given to each indicator. Finally, we employ the Delphi method to narrow down the initial set of sustainability indicators based on consensus on the importance of indicators and availability of data among experts. Some indicators that are not important and statistical data unavailable are eliminated. Therefore, the final set includes all crucial indicators for evaluating the sustainability of Hai Phong seaports with collected data.

Eco-village has been regarded as an alternative to accomplish sustainable development for rural village. This study has intended to develop comprehensive planning indicators to establish an eco-village based on such aspects of sustainable development as economy, environment, and society. To reach this objective, this study has set up six goals as follows: 1) ecological production activities for agriculture, 2) resource circulation and energy independence in the economic domain; 3) building cultural and historical succession and community activation, and 4) living together with surrounding regions in social domain; and 5) maintaining environmental habitat, and 6) restoring natural ecosystem in environmental domain. Based on these goals, this study has developed the planning indicators to build an eco-village through case study, literature review, survey for suitability, and factor analysis. This study has found 17 strategies and 47 planning indicators in accordance with the six goals.