Production for a green economy

In the chapter are discussed new approaches of production development in order to achieve the objectives of sustainable development and put the green economy into practice. Conventional approaches to the production must be re-oriented towards the promotion of renewable, cleaner and more effi technologies aimed at the conservation of all natural resources. This requires a new approach to the design of products and their production, and requires the inclusion of post-industrial and post-consumer residues into permanent circulation and the development of eco-innovative management patterns. In the implementation of such solutions the “cradle to cradle” approach could be useful.Wydanie współfinansowane ze środków Miasta Łodzi w ramach zadania “Współpraca z wyższymi uczelniami” – umowa 100/03/201

On the extremals of the P\'olya-Szeg\H{o} inequality

The distance of an extremal of the P\'olya-Szeg\H{o} inequality from a translate of its symmetric decreasing rearrangement is controlled by the measure of the set of critical points.Comment: 17 pages, 3 figure

Rearrangement inequalities for functionals with monotone integrands

The rearrangement inequalities of Hardy-Littlewood and Riesz say that certain integrals involving products of two or three functions increase under symmetric decreasing rearrangement. It is known that these inequalities extend to integrands of the form F(u_1,..., u_m) where F is supermodular; in particular, they hold when F has nonnegative mixed second derivatives. This paper concerns the regularity assumptions on F and the equality cases. It is shown here that extended Hardy-Littlewood and Riesz inequalities are valid for supermodular integrands that are just Borel measurable. Under some nondegeneracy conditions, all equality cases are equivalent to radially decreasing functions under transformations that leave the functionals invariant (i.e., measure-preserving maps for the Hardy-Littlewood inequality, translations for the Riesz inequality). The proofs rely on monotone changes of variables in the spirit of Sklar's theorem.Comment: 20 pages. Slightly re-organized, four added reference

Green Public Procurements (GPP) as an Instrument of Implementation of Sustainable Development. Analysis of the Experience of the Łódź Region Local Government

This paper discusses the situation on the Polish green public procurements (GPP) market, with special emphasis on the results of a GPPinfoNET project realised in the Łódź region. The identification of the main barriers hindering the application of GPP in the Polish practice is the departure point to formulating recommendations concerning organisational and legal changes which would make it possible to increase the share of GPP in the Polish economic practice. Implementation of green public procurement is considered as an important element of sustainable development.W artykule przedmiotem analizy jest sytuacja na polskim rynku zielonych zamówień publicznych, ze szczególnym uwzględnieniem efektów projektu GPPinfoNET realizowanego w regionie łódzkim. Punktem wyjścia do sformułowania rekomendacji dotyczących zmian organizacyjnych i prawnych służących popularyzacji ZZP jest identyfikacja głównych barier hamujących stosowanie takich zamówień w polskiej praktyce gospodarczej. Wdrażanie zielonych zamówień publicznych jest traktowane jako ważny element realizacji zrównoważonego rozwoju