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This article presents a systemic approach to municipal solid waste management in the Kaliningrad region. This approach is based on innovative practices and marketing research. It will contribute to regional development in line with the principles of green economy and cross-border cooperation in the Baltic countries. An innovative ecosystem should be created in the region to reach this goal, along with a network of solid municipal waste recycling enterprises. This network should include microenterprises. The study offers a universal business model for a recycling microenterprise.

Potential wave energy in Indonesia between 5 kW m–1 to 20 kW m–1 depending on-site location coastline. This research in ocean energy of Wave Energy Conversion (WEC) is wave activated body using the floating or motion hull due to kinetic and momentum energy from an ocean wave. The pendulum movement cause by a floating hull to drive the electric generator. The shape of the hull, displacement, and position point of the mooring line greatly influences the movement of the hull. This paper discusses how to computational fluid dynamics (CFD) simulation can solve and determine the best mooring line position in the hull. Moreover, the shape of the hull at under waterline or drought has slope angle 45°, length overall 3 m, breadth 1.5 m, depth 2 m, and draft 0.65 m. One of the boundary conditions in the domain CFD, the direction of a wave from inlet boundary to starboard or port side using regular wave. The position both of mooring bitts are at forwarding perpendicular and after perpendicular. Three-position of mooring bitts that have simulated CFD: under the waterline, (ii) at the waterline, and (iii) up waterline. The result of simulation that the best position of mooring bitts is at the waterline.

The automated toolkit for assessing environmental and investment attractiveness of a mining region and the results of its application are discussed in the article. This toolkit includes the optimization mathematical model, the algorithms for the interaction between a regional control center and a producer within the territory, as well as the automated software package for their analysis. The use of the optimization mathematical model makes it possible to take into account the maximum economic potential of a producer, which determines, respectively, a mining region’s environment pollution potential. Accounting for environmental risks will allow the control center or other decision makers to identify not only the optimal pattern of eco-economic interaction in the region, but also reflect changes in the environmental and investment climate as a combination of economic potential and involved risks. The model and the algorithms of interaction between a regional control center and a producer, as well as the results of their numerical analysis given in this paper, allow considering this toolkit as an effective decision support tool aimed at improving environmental and investment attractiveness of a mining region by encouraging a producer to use the best available technologies and conserve the natural environment.

This article examines the influence of waters environment on the existence of Martapura port in Banjarmasin, South Kalimantan. Martapura port is a port located on the banks of Martapura River, Banjarmasin. This port has been an essential trade center since the 17th century during the heyday of Banjar sultanate. The strategic port location along the riverbank that divides Banjarmasin makes Martapura port crowded and visited by sailors and traders from various islands and other regions in Indonesia, even from other countries. Through historical research methods consisting of heuristics, source criticism, interpretation, and historiography, this article reveals how the waters environment influenced the existence of Martapura port until finally the port had to be moved to a new location. The results emphasize that the narrowing Martapura river due to the development of economic centers and residential settlements in the form of floating houses on both sides of the river and also sedimentation in the estuary, caused disruption of the shipping lanes to the port and the silting of the turning basins. As a result, the waterway became narrow and large ships were no longer able to move into the port. Therefore, in 1961, the construction of a new port on the banks of Barito river began and since 1965 Martapura port has only been used for the activities of small wooden ships and sailboats.

The negative impact of Sino-US trade friction on China and Wuhan’s economy, politics, trade and many other fields is extensive and profound, and the COVID-19’s outbreak has exacerbated this impact. Under these circumstances, this paper analyzes the strategic situation of Wuhan’s service trade based on SWOT analysis. Accordingly, this paper puts forward countermeasures for the innovative development of service trade in Wuhan.

The paper presents materials on a comprehensive assessment of reservoirs for commercial aquaculture, exemplified by some waterbodies in the Rostov region. We have examined 24 waterbodies located in the southern and south-eastern Rostov region. The assessment of reservoirs was carried out based on hydrological and hydrochemical indicators, the point score of which was carried out in four sets of issues. Almost all the studied water bodies because of the lack of required water supply have been classified as reservoirs with risky fish farming. Most aquaculture reservoirs recommended for commercial farming are found in the zone of a very arid climate, characterized by annual precipitation ratio of 0.33-0.44. A brief hydrochemical description of each investigated waterbody can be used to form scientifically-based recommendations for the organization of commercial fish farms in Russia.

It has been noted that the 21st century saw significant changes in public views on the economy-ecology relationship. Growing number of applied studies of eco-economic issues as well as the need to comprehend achieved results brought the use of cognitive analytics to the fore. Cognitive model provides a holistic view on the existing eco-economic process through its graphic representation reflecting nature and dynamics of causal relationships. Cognitive analysis of the conventional models of eco-economic process revealed that they mainly focus on economic procedures while environmental issues being shifted towards the periphery. Likewise, the traditional model essentially limits production development by ecological requirements while environmental condition is inherently impaired and requires further restoration or, at the very least, decontamination. The new models of manufacturing organization must aim to improve human environment as a whole and base on a zero-waste production principle where underused resources and raw materials are considered as waste. This article presents a cognitive model of green manufacturing in the shape of a multi-circuit system with all the circuits involved in the zero-waste production cycle. Considering that all circuits employ positive feedback, they initiate growth and mutually support consistent operation of an enterprise. A zero-waste enterprise can and should develop in cooperation with other enterprises that consciously or implicitly (formally) implement sustainable manufacturing plans.

In the presented study, an assessment was made of the innovative development of agriculture in the Russian Federation. As part of the study, it was found that innovative development is the effectiveness of the type of activity, which consists in increasing the use of new technologies, saving resources, reducing operating and capital costs, reducing environmental impacts, etc. In this regard, the work analyzed indicators reflecting energy capacity, internal research and development costs and the volume of innovative goods and services. The analyzed indicators indicate that in agriculture there is no tendency to switch to innovative technologies, as a result, the study proposed a model for ensuring the innovative development of agriculture. At the end of the study, conclusions are drawn from the results of the work.