Say one meter of a trunk produces for 500 paper sheets at Rp. 37,000 of sale price and the total production cost, say Rp. 20/sheet or Rp 10,000/500 sheets).  Simply, the paper production has met an eco-efficient concept but it heavily depends on the application of technology. To illustrate the eco-efficiency practice of such paper […]

Ecological pyramids are graphical representations of the trophic structure of ecosystems. Ecological pyramids are organized with the productivity of plants on the bottom, that of herbivores above the plants, and carnivores above the herbivores. If the ecosystem sustains top carnivores, they are represented at the apex of the ecological pyramid of productivity. Ecological food webs are based […]

Reducing environmental stress in a growing economy requires improvements in eco-efficiency larger than economic growth, in order to achieve absolute decoupling. How far and how fast can and should we go; can substantial environmental improvements be realised in combination with economic growth? Research should indicate the potential for environmental improvement through technological development, under realistic […]

Studi korelasi ditujukan untuk melihat keterkaitan atau hubungan antara dua variabel atau lebih. Beberapa hal penting dalam studi ini adalah: 1. Pastikan variabel yang akan diteliti tersebut logis dan dapat diukur. 2. Perhatikan koefisien korelasi yang dinyatakan dalam bentuk angka desimal -1,00 sampai 0,00 sampai + 1,00. — berlanjut, Harisman Simangunsong