The optimal intertemporal decision on industrial production and harvesting a renewable natural resource

Soil is a thin (up to 50cm) loose top layer of the Earth's surface, located between the lithosphere and atmosphere. Total available land area on Earth is limited, and the soil is extremely important, and in one generation it is a non-renewable natural resource. Unfortunately, nowadays the soil is, next to water, one of the most endangered natural resources. Among the many processes of soil damage, which is not being addressed at this point, is the growing importance placed on soil contamination. Contaminated soil is the soil in which human or natural activity has increased the content of harmful substances whose concentrations may be harmful to human activity, that is, for the production of plants or animals.

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Incorporation of Brazilian Diatomite in the Synthesis of An MFI Zeolite

Molecules ◽

10.3390/molecules24101980 ◽

2019 ◽

Vol 24 (10) ◽

pp. 1980 ◽

Cited By ~ 1

Author(s):

Paloma Vinaches ◽

Anderson Joel Schwanke ◽

Christian Wittee Lopes ◽

Iane M. S. Souza ◽

Jhonny Villarroel-Rocha ◽

...

Keyword(s):

Natural Resource ◽

Industrial Production ◽

Pore Diameter ◽

Environmental Agreements ◽

Gas Sorption ◽

X Ray Diffraction ◽

Mfi Zeolite ◽

X Ray ◽

Diffraction Microscopy

The need for greener procedures is a fact to reduce residues, to decrease industrial costs, and to accomplish the environmental agreements. In an attempt to address this question, we propose the addition of a natural resource, Brazilian diatomite, to an MFI zeolite traditional synthesis. We have characterized the resulting product with different techniques, such as X-ray diffraction, microscopy, and gas sorption, and, afterwards, we evaluate the greenness of the process by the Green Star method. The results were promising: We obtained the desired topology in the form of small crystallites aggregated and a pore diameter of 0.8 nm. In conclusion, the product has the necessary characteristics for an adsorption or catalytic future tests and escalation to industrial production.

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Optimal Exploitation of a General Renewable Natural Resource under State and Delay Constraints

Mathematics ◽

10.3390/math8112053 ◽

2020 ◽

Vol 8 (11) ◽

pp. 2053

Author(s):

M’hamed Gaïgi ◽

Idris Kharroubi ◽

Thomas Lim

Keyword(s):

Differential Equation ◽

Natural Resource ◽

Market Price ◽

Programming Approach ◽

Infinite Time ◽

Delay Constraints ◽

Dynamic Programming Approach ◽

Brownian Process ◽

Renewable Natural Resource ◽

The Value Function

In this work, we study an optimization problem arising in the management of a natural resource over an infinite time horizon. The resource is assumed to evolve according to a logistic stochastic differential equation. The manager is allowed to harvest the resource and sell it at a stochastic market price modeled by a geometric Brownian process. We assume that there are delay constraints imposed on the decisions of the manager. More precisely, starting harvesting order and selling order are executed after a delay. By using the dynamic programming approach, we characterize the value function as the unique solution to an original partial differential equation. We complete our study with some numerical illustrations.

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Behaviour of non-renewable natural resource firms under uncertainty

Energy Economics ◽

10.1016/0140-9883(94)90013-2 ◽

1994 ◽

Vol 16 (1) ◽

pp. 9-21 ◽

Cited By ~ 1

Author(s):

Michael J Mueller

Keyword(s):

Natural Resource ◽

Renewable Natural Resource

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Liability of Middleness Revisited: The Advantages for Mid-Sized Competitors in Renewable Natural Resource Industries

Management and Organization Review ◽

10.1017/mor.2018.54 ◽

2019 ◽

Vol 15 (4) ◽

pp. 737-772 ◽

Cited By ~ 1

Author(s):

Alfonso Cruz ◽

Tomas Reyes ◽

Roberto Vassolo

Keyword(s):

Product Differentiation ◽

Natural Resource ◽

Product Line ◽

Capital Investments ◽

Market Selection ◽

Firm Level ◽

Line Scale ◽

The Us ◽

Renewable Natural Resource ◽

Curvilinear Effect

ABSTRACTSize is an important antecedent of firm survival, and several studies theoretically sustain and empirically support a ‘liability of middleness’. Indeed, it is widely believed that companies should act strategically to either become large or remain small and occupy a niche position, because mid-sized firms face the strongest market selection pressures. This study challenges that logic in renewable natural resource industries. Measuring size as product-line scale and firm-level portfolio breadth, we argue that in industries characterized by cost competition, the lack of product differentiation, large capital investments, and sharp price oscillation, scale and breadth have a curvilinear effect on survival that favors mid-sized firms rather than penalizing them. An empirical analysis of the US pulp and paper (P&P) industry over the period 1970–2000 strongly supports our arguments. This study is particularly relevant for emerging economies, in which natural resource industries represent an important portion of the total economic activity.

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TECHNOLOGICAL LEADERSHIP AND SUSTAINABLE GROWTH IN A BILATERAL TRADE MODEL

International Game Theory Review ◽

10.1142/s0219198908001789 ◽

2008 ◽

Vol 10 (01) ◽

pp. 73-100 ◽

Cited By ~ 4

Author(s):

FRANCISCO CABO ◽

GUIOMAR MARTÍN-HERRÁN ◽

MARÍA PILAR MARTÍNEZ-GARCÍA

Keyword(s):

Developing Country ◽

Natural Resource ◽

Bilateral Trade ◽

Sustainable Growth ◽

Equilibrium Path ◽

Point Property ◽

Trade Model ◽

Technological Leadership ◽

State Growth ◽

Renewable Natural Resource

This paper develops a trade model for a technologically leading country and a developing country that exploits a renewable natural resource. Technology diffuses from the technological leader to the developing country through foreign direct investment (FDI). Alternatively, innovative activities can also be carried out in the developing economy. We prove the existence and uniqueness of an equilibrium path along which both countries grow at the same rate, maintaining the natural-resource stock at a constant level. The saddle-point property for this equilibrium is proved and a sensitivity analysis is carried out. The steady-state growth rate and consumption under both scenarios are compared and the effect of resource abundance analyzed.

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