The Possibility of a High-Efficiency Wave Power Generation System Using Dielectric Elastomers

Power generation using dielectric elastomer (DE) artificial muscle is attracting attention because of its light weight, low cost, and high-efficiency. Since this method is a system that produces electricity without emitting carbon dioxide nor using rare earths, it would contribute to the goal of environmental sustainability. In this paper, the background of DEs, the associated high efficiency wave energy generation (WEG) systems that we developed using DEs, as well as the latest development of its material are summarized. By covering both the challenges and achievements, this paper discusses the opportunities to build the foundation of an energy recycling society through the usage of these WEGs. To make these possibilities commercially successful, the advantages of DEs need to be integrated with traditional technologies. To achieve this, the method of using DEs alone and a system used in combination with an oscillating water column were also considered. Finally, the current status and future of DE generators (DEGs) are discussed.

Possibilities of Improving the Properties of Arable Land by Application of Composts

Degradation of arable land can rightly be considered as one of the most serious environmental problems; therefore, detailed research is needed to examine the practical possibilities for improving soil properties. The application of compost and vermicompost substrates seems to be a very advantageous way of improving the quality of soil, which may also result in an increase in the yield of cultivated plants. At the same time, the use of compost, a product of completely natural decomposition of biowaste, as a suitable organic fertilizer for arable land, is a very desirable contribution to the principles of the circulatory and recycling society.

Indicator System Construction for Recycling Society

For the justice between generations, the concept of sustainable development has become the tendency of national development in 21 century. The guideline and indicator system for sustainable development were established already in Taiwan. The issues of eco-city, health-city or sustainable city have discussed in several cities these years. However, the key point of sustainable development is to reduce consumption of resources. A recycling-based society is the ultimate aim. In this research, issue-based indicator framework was adopted to construct an indicator system focused on the assessment of recycling representation in a city. With the considerations of resource input and recycling, the performance of resources utilization can be realized. Top five cities in Taiwan were selected as the case study. Other assessment results from existed indicator systems were compared with the proposed indicator system for distinguished the difference between various systems.