Manfred Fehr

6 Questions 27 Answers 0 Followers

Questions related from Manfred Fehr

Where can I find a guide to objectively evaluate teaching quality?

I wish to get away from opinion polls and vague expressions such as good or poor. I am looking for a precise job evaluation, preferably using numbers. With this I could than compare one teacher to...

17 May 2017 4,609 3 View

What is the maximum feasible landfill diversion of household waste ?

I have shown by experiments that source separation and reverse logistics in Brazil can take care of 67% of all household waste. This means private initiatives without need for municipal...

19 November 2016 863 3 View

Does any city in a developing country have in place functional reverse logistics for biodegradable municipal waste?

Although biodegradable material represents 70% of municipal waste in developing countries, I do not know of any city that runs separate collection and composting facilities. I am looking for a...

06 February 2015 1,773 4 View

Has anybody calculated the opportunity cost of a landfill and published it?

Landfills take up urban space and swallow material. I wish to put a price on this in order to support recycling initiatives with economic arguments.

14 January 2015 4,491 7 View

Does anybody from a developing country have experimental data on source separated domestic waste composition?

The literature only provides raw waste compositions, and they seem to be identical no matter which country they come from.

13 November 2013 9,684 11 View

Does it make economic sense to subsidize waste items at the wholesale level in order to stimulate reverse logistics?

A questionable alternative is to hand out direct financial support to recyclers.

13 November 2013 4,991 2 View